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build(deps): bump cloud.google.com/go/compute from 1.10.0 to 1.19.3

Browse source 
Bumps [cloud.google.com/go/compute](https://github.com/googleapis/google-cloud-go) from 1.10.0 to 1.19.3.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/documentai/CHANGES.md)
- [Commits](https://github.com/googleapis/google-cloud-go/compare/kms/v1.10.0...compute/v1.19.3)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/compute
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Migrated to the new version by following
https://github.com/googleapis/google-cloud-go/blob/main/migration.md

Co-authored-by: Tomáš Hozza <thozza@redhat.com>
Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Tomáš Hozza <thozza@redhat.com>
This commit is contained in:
dependabot[bot] 2023-05-17 05:12:27 +00:00 • committed by Tomáš Hozza
parent 468c63d433
commit 60e55b5ed3
448 changed files with 119170 additions and 54581 deletions
Download patch file Download diff file Expand all files Collapse all files

31
vendor/github.com/cespare/xxhash/v2/README.md generated vendored
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@ -3,8 +3,7 @@
[![Go Reference](https://pkg.go.dev/badge/github.com/cespare/xxhash/v2.svg)](https://pkg.go.dev/github.com/cespare/xxhash/v2)
[![Test](https://github.com/cespare/xxhash/actions/workflows/test.yml/badge.svg)](https://github.com/cespare/xxhash/actions/workflows/test.yml)
xxhash is a Go implementation of the 64-bit
[xxHash](http://cyan4973.github.io/xxHash/) algorithm, XXH64. This is a
xxhash is a Go implementation of the 64-bit [xxHash] algorithm, XXH64. This is a
high-quality hashing algorithm that is much faster than anything in the Go
standard library.
@ -25,8 +24,11 @@ func (*Digest) WriteString(string) (int, error)
func (*Digest) Sum64() uint64
```
This implementation provides a fast pure-Go implementation and an even faster
assembly implementation for amd64.
The package is written with optimized pure Go and also contains even faster
assembly implementations for amd64 and arm64. If desired, the `purego` build tag
opts into using the Go code even on those architectures.
[xxHash]: http://cyan4973.github.io/xxHash/
## Compatibility
@ -45,19 +47,20 @@ I recommend using the latest release of Go.
Here are some quick benchmarks comparing the pure-Go and assembly
implementations of Sum64.
| input size | purego | asm |
| --- | --- | --- |
| 5 B | 979.66 MB/s | 1291.17 MB/s |
| 100 B | 7475.26 MB/s | 7973.40 MB/s |
| 4 KB | 17573.46 MB/s | 17602.65 MB/s |
| 10 MB | 17131.46 MB/s | 17142.16 MB/s |
| input size | purego | asm |
| ---------- | --------- | --------- |
| 4 B | 1.3 GB/s | 1.2 GB/s |
| 16 B | 2.9 GB/s | 3.5 GB/s |
| 100 B | 6.9 GB/s | 8.1 GB/s |
| 4 KB | 11.7 GB/s | 16.7 GB/s |
| 10 MB | 12.0 GB/s | 17.3 GB/s |
These numbers were generated on Ubuntu 18.04 with an Intel i7-8700K CPU using
the following commands under Go 1.11.2:
These numbers were generated on Ubuntu 20.04 with an Intel Xeon Platinum 8252C
CPU using the following commands under Go 1.19.2:
```
$ go test -tags purego -benchtime 10s -bench '/xxhash,direct,bytes'
$ go test -benchtime 10s -bench '/xxhash,direct,bytes'
benchstat <(go test -tags purego -benchtime 500ms -count 15 -bench 'Sum64$')
benchstat <(go test -benchtime 500ms -count 15 -bench 'Sum64$')
```
## Projects using this package

10
vendor/github.com/cespare/xxhash/v2/testall.sh generated vendored Normal file
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@ -0,0 +1,10 @@
#!/bin/bash
set -eu -o pipefail
# Small convenience script for running the tests with various combinations of
# arch/tags. This assumes we're running on amd64 and have qemu available.
go test ./...
go test -tags purego ./...
GOARCH=arm64 go test
GOARCH=arm64 go test -tags purego

47
vendor/github.com/cespare/xxhash/v2/xxhash.go generated vendored
View file

@ -16,19 +16,11 @@ const (
prime5 uint64 = 2870177450012600261
)
// NOTE(caleb): I'm using both consts and vars of the primes. Using consts where
// possible in the Go code is worth a small (but measurable) performance boost
// by avoiding some MOVQs. Vars are needed for the asm and also are useful for
// convenience in the Go code in a few places where we need to intentionally
// avoid constant arithmetic (e.g., v1 := prime1 + prime2 fails because the
// result overflows a uint64).
var (
prime1v = prime1
prime2v = prime2
prime3v = prime3
prime4v = prime4
prime5v = prime5
)
// Store the primes in an array as well.
//
// The consts are used when possible in Go code to avoid MOVs but we need a
// contiguous array of the assembly code.
var primes = [...]uint64{prime1, prime2, prime3, prime4, prime5}
// Digest implements hash.Hash64.
type Digest struct {
@ -50,10 +42,10 @@ func New() *Digest {
// Reset clears the Digest's state so that it can be reused.
func (d *Digest) Reset() {
d.v1 = prime1v + prime2
d.v1 = primes[0] + prime2
d.v2 = prime2
d.v3 = 0
d.v4 = -prime1v
d.v4 = -primes[0]
d.total = 0
d.n = 0
}
@ -69,21 +61,23 @@ func (d *Digest) Write(b []byte) (n int, err error) {
n = len(b)
d.total += uint64(n)
memleft := d.mem[d.n&(len(d.mem)-1):]
if d.n+n < 32 {
// This new data doesn't even fill the current block.
copy(d.mem[d.n:], b)
copy(memleft, b)
d.n += n
return
}
if d.n > 0 {
// Finish off the partial block.
copy(d.mem[d.n:], b)
c := copy(memleft, b)
d.v1 = round(d.v1, u64(d.mem[0:8]))
d.v2 = round(d.v2, u64(d.mem[8:16]))
d.v3 = round(d.v3, u64(d.mem[16:24]))
d.v4 = round(d.v4, u64(d.mem[24:32]))
b = b[32-d.n:]
b = b[c:]
d.n = 0
}
@ -133,21 +127,20 @@ func (d *Digest) Sum64() uint64 {
h += d.total
i, end := 0, d.n
for ; i+8 <= end; i += 8 {
k1 := round(0, u64(d.mem[i:i+8]))
b := d.mem[:d.n&(len(d.mem)-1)]
for ; len(b) >= 8; b = b[8:] {
k1 := round(0, u64(b[:8]))
h ^= k1
h = rol27(h)*prime1 + prime4
}
if i+4 <= end {
h ^= uint64(u32(d.mem[i:i+4])) * prime1
if len(b) >= 4 {
h ^= uint64(u32(b[:4])) * prime1
h = rol23(h)*prime2 + prime3
i += 4
b = b[4:]
}
for i < end {
h ^= uint64(d.mem[i]) * prime5
for ; len(b) > 0; b = b[1:] {
h ^= uint64(b[0]) * prime5
h = rol11(h) * prime1
i++
}
h ^= h >> 33

308
vendor/github.com/cespare/xxhash/v2/xxhash_amd64.s generated vendored
View file

@ -1,215 +1,209 @@
//go:build !appengine && gc && !purego
// +build !appengine
// +build gc
// +build !purego
#include "textflag.h"
// Register allocation:
// AX h
// SI pointer to advance through b
// DX n
// BX loop end
// R8 v1, k1
// R9 v2
// R10 v3
// R11 v4
// R12 tmp
// R13 prime1v
// R14 prime2v
// DI prime4v
// Registers:
#define h AX
#define d AX
#define p SI // pointer to advance through b
#define n DX
#define end BX // loop end
#define v1 R8
#define v2 R9
#define v3 R10
#define v4 R11
#define x R12
#define prime1 R13
#define prime2 R14
#define prime4 DI
// round reads from and advances the buffer pointer in SI.
// It assumes that R13 has prime1v and R14 has prime2v.
#define round(r) \
MOVQ (SI), R12 \
ADDQ $8, SI \
IMULQ R14, R12 \
ADDQ R12, r \
ROLQ $31, r \
IMULQ R13, r
#define round(acc, x) \
IMULQ prime2, x \
ADDQ x, acc \
ROLQ $31, acc \
IMULQ prime1, acc
// mergeRound applies a merge round on the two registers acc and val.
// It assumes that R13 has prime1v, R14 has prime2v, and DI has prime4v.
#define mergeRound(acc, val) \
IMULQ R14, val \
ROLQ $31, val \
IMULQ R13, val \
XORQ val, acc \
IMULQ R13, acc \
ADDQ DI, acc
// round0 performs the operation x = round(0, x).
#define round0(x) \
IMULQ prime2, x \
ROLQ $31, x \
IMULQ prime1, x
// mergeRound applies a merge round on the two registers acc and x.
// It assumes that prime1, prime2, and prime4 have been loaded.
#define mergeRound(acc, x) \
round0(x) \
XORQ x, acc \
IMULQ prime1, acc \
ADDQ prime4, acc
// blockLoop processes as many 32-byte blocks as possible,
// updating v1, v2, v3, and v4. It assumes that there is at least one block
// to process.
#define blockLoop() \
loop: \
MOVQ +0(p), x \
round(v1, x) \
MOVQ +8(p), x \
round(v2, x) \
MOVQ +16(p), x \
round(v3, x) \
MOVQ +24(p), x \
round(v4, x) \
ADDQ $32, p \
CMPQ p, end \
JLE loop
// func Sum64(b []byte) uint64
TEXT ·Sum64(SB), NOSPLIT, $0-32
TEXT ·Sum64(SB), NOSPLIT|NOFRAME, $0-32
// Load fixed primes.
MOVQ ·prime1v(SB), R13
MOVQ ·prime2v(SB), R14
MOVQ ·prime4v(SB), DI
MOVQ ·primes+0(SB), prime1
MOVQ ·primes+8(SB), prime2
MOVQ ·primes+24(SB), prime4
// Load slice.
MOVQ b_base+0(FP), SI
MOVQ b_len+8(FP), DX
LEAQ (SI)(DX*1), BX
MOVQ b_base+0(FP), p
MOVQ b_len+8(FP), n
LEAQ (p)(n*1), end
// The first loop limit will be len(b)-32.
SUBQ $32, BX
SUBQ $32, end
// Check whether we have at least one block.
CMPQ DX, $32
CMPQ n, $32
JLT noBlocks
// Set up initial state (v1, v2, v3, v4).
MOVQ R13, R8
ADDQ R14, R8
MOVQ R14, R9
XORQ R10, R10
XORQ R11, R11
SUBQ R13, R11
MOVQ prime1, v1
ADDQ prime2, v1
MOVQ prime2, v2
XORQ v3, v3
XORQ v4, v4
SUBQ prime1, v4
// Loop until SI > BX.
blockLoop:
round(R8)
round(R9)
round(R10)
round(R11)
blockLoop()
CMPQ SI, BX
JLE blockLoop
MOVQ v1, h
ROLQ $1, h
MOVQ v2, x
ROLQ $7, x
ADDQ x, h
MOVQ v3, x
ROLQ $12, x
ADDQ x, h
MOVQ v4, x
ROLQ $18, x
ADDQ x, h
MOVQ R8, AX
ROLQ $1, AX
MOVQ R9, R12
ROLQ $7, R12
ADDQ R12, AX
MOVQ R10, R12
ROLQ $12, R12
ADDQ R12, AX
MOVQ R11, R12
ROLQ $18, R12
ADDQ R12, AX
mergeRound(AX, R8)
mergeRound(AX, R9)
mergeRound(AX, R10)
mergeRound(AX, R11)
mergeRound(h, v1)
mergeRound(h, v2)
mergeRound(h, v3)
mergeRound(h, v4)
JMP afterBlocks
noBlocks:
MOVQ ·prime5v(SB), AX
MOVQ ·primes+32(SB), h
afterBlocks:
ADDQ DX, AX
ADDQ n, h
// Right now BX has len(b)-32, and we want to loop until SI > len(b)-8.
ADDQ $24, BX
ADDQ $24, end
CMPQ p, end
JG try4
CMPQ SI, BX
JG fourByte
loop8:
MOVQ (p), x
ADDQ $8, p
round0(x)
XORQ x, h
ROLQ $27, h
IMULQ prime1, h
ADDQ prime4, h
wordLoop:
// Calculate k1.
MOVQ (SI), R8
ADDQ $8, SI
IMULQ R14, R8
ROLQ $31, R8
IMULQ R13, R8
CMPQ p, end
JLE loop8
XORQ R8, AX
ROLQ $27, AX
IMULQ R13, AX
ADDQ DI, AX
try4:
ADDQ $4, end
CMPQ p, end
JG try1
CMPQ SI, BX
JLE wordLoop
MOVL (p), x
ADDQ $4, p
IMULQ prime1, x
XORQ x, h
fourByte:
ADDQ $4, BX
CMPQ SI, BX
JG singles
ROLQ $23, h
IMULQ prime2, h
ADDQ ·primes+16(SB), h
MOVL (SI), R8
ADDQ $4, SI
IMULQ R13, R8
XORQ R8, AX
ROLQ $23, AX
IMULQ R14, AX
ADDQ ·prime3v(SB), AX
singles:
ADDQ $4, BX
CMPQ SI, BX
try1:
ADDQ $4, end
CMPQ p, end
JGE finalize
singlesLoop:
MOVBQZX (SI), R12
ADDQ $1, SI
IMULQ ·prime5v(SB), R12
XORQ R12, AX
loop1:
MOVBQZX (p), x
ADDQ $1, p
IMULQ ·primes+32(SB), x
XORQ x, h
ROLQ $11, h
IMULQ prime1, h
ROLQ $11, AX
IMULQ R13, AX
CMPQ SI, BX
JL singlesLoop
CMPQ p, end
JL loop1
finalize:
MOVQ AX, R12
SHRQ $33, R12
XORQ R12, AX
IMULQ R14, AX
MOVQ AX, R12
SHRQ $29, R12
XORQ R12, AX
IMULQ ·prime3v(SB), AX
MOVQ AX, R12
SHRQ $32, R12
XORQ R12, AX
MOVQ h, x
SHRQ $33, x
XORQ x, h
IMULQ prime2, h
MOVQ h, x
SHRQ $29, x
XORQ x, h
IMULQ ·primes+16(SB), h
MOVQ h, x
SHRQ $32, x
XORQ x, h
MOVQ AX, ret+24(FP)
MOVQ h, ret+24(FP)
RET
// writeBlocks uses the same registers as above except that it uses AX to store
// the d pointer.
// func writeBlocks(d *Digest, b []byte) int
TEXT ·writeBlocks(SB), NOSPLIT, $0-40
TEXT ·writeBlocks(SB), NOSPLIT|NOFRAME, $0-40
// Load fixed primes needed for round.
MOVQ ·prime1v(SB), R13
MOVQ ·prime2v(SB), R14
MOVQ ·primes+0(SB), prime1
MOVQ ·primes+8(SB), prime2
// Load slice.
MOVQ b_base+8(FP), SI
MOVQ b_len+16(FP), DX
LEAQ (SI)(DX*1), BX
SUBQ $32, BX
MOVQ b_base+8(FP), p
MOVQ b_len+16(FP), n
LEAQ (p)(n*1), end
SUBQ $32, end
// Load vN from d.
MOVQ d+0(FP), AX
MOVQ 0(AX), R8 // v1
MOVQ 8(AX), R9 // v2
MOVQ 16(AX), R10 // v3
MOVQ 24(AX), R11 // v4
MOVQ s+0(FP), d
MOVQ 0(d), v1
MOVQ 8(d), v2
MOVQ 16(d), v3
MOVQ 24(d), v4
// We don't need to check the loop condition here; this function is
// always called with at least one block of data to process.
blockLoop:
round(R8)
round(R9)
round(R10)
round(R11)
CMPQ SI, BX
JLE blockLoop
blockLoop()
// Copy vN back to d.
MOVQ R8, 0(AX)
MOVQ R9, 8(AX)
MOVQ R10, 16(AX)
MOVQ R11, 24(AX)
MOVQ v1, 0(d)
MOVQ v2, 8(d)
MOVQ v3, 16(d)
MOVQ v4, 24(d)
// The number of bytes written is SI minus the old base pointer.
SUBQ b_base+8(FP), SI
MOVQ SI, ret+32(FP)
// The number of bytes written is p minus the old base pointer.
SUBQ b_base+8(FP), p
MOVQ p, ret+32(FP)
RET

183
vendor/github.com/cespare/xxhash/v2/xxhash_arm64.s generated vendored Normal file
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@ -0,0 +1,183 @@
//go:build !appengine && gc && !purego
// +build !appengine
// +build gc
// +build !purego
#include "textflag.h"
// Registers:
#define digest R1
#define h R2 // return value
#define p R3 // input pointer
#define n R4 // input length
#define nblocks R5 // n / 32
#define prime1 R7
#define prime2 R8
#define prime3 R9
#define prime4 R10
#define prime5 R11
#define v1 R12
#define v2 R13
#define v3 R14
#define v4 R15
#define x1 R20
#define x2 R21
#define x3 R22
#define x4 R23
#define round(acc, x) \
MADD prime2, acc, x, acc \
ROR $64-31, acc \
MUL prime1, acc
// round0 performs the operation x = round(0, x).
#define round0(x) \
MUL prime2, x \
ROR $64-31, x \
MUL prime1, x
#define mergeRound(acc, x) \
round0(x) \
EOR x, acc \
MADD acc, prime4, prime1, acc
// blockLoop processes as many 32-byte blocks as possible,
// updating v1, v2, v3, and v4. It assumes that n >= 32.
#define blockLoop() \
LSR $5, n, nblocks \
PCALIGN $16 \
loop: \
LDP.P 16(p), (x1, x2) \
LDP.P 16(p), (x3, x4) \
round(v1, x1) \
round(v2, x2) \
round(v3, x3) \
round(v4, x4) \
SUB $1, nblocks \
CBNZ nblocks, loop
// func Sum64(b []byte) uint64
TEXT ·Sum64(SB), NOSPLIT|NOFRAME, $0-32
LDP b_base+0(FP), (p, n)
LDP ·primes+0(SB), (prime1, prime2)
LDP ·primes+16(SB), (prime3, prime4)
MOVD ·primes+32(SB), prime5
CMP $32, n
CSEL LT, prime5, ZR, h // if n < 32 { h = prime5 } else { h = 0 }
BLT afterLoop
ADD prime1, prime2, v1
MOVD prime2, v2
MOVD $0, v3
NEG prime1, v4
blockLoop()
ROR $64-1, v1, x1
ROR $64-7, v2, x2
ADD x1, x2
ROR $64-12, v3, x3
ROR $64-18, v4, x4
ADD x3, x4
ADD x2, x4, h
mergeRound(h, v1)
mergeRound(h, v2)
mergeRound(h, v3)
mergeRound(h, v4)
afterLoop:
ADD n, h
TBZ $4, n, try8
LDP.P 16(p), (x1, x2)
round0(x1)
// NOTE: here and below, sequencing the EOR after the ROR (using a
// rotated register) is worth a small but measurable speedup for small
// inputs.
ROR $64-27, h
EOR x1 @> 64-27, h, h
MADD h, prime4, prime1, h
round0(x2)
ROR $64-27, h
EOR x2 @> 64-27, h, h
MADD h, prime4, prime1, h
try8:
TBZ $3, n, try4
MOVD.P 8(p), x1
round0(x1)
ROR $64-27, h
EOR x1 @> 64-27, h, h
MADD h, prime4, prime1, h
try4:
TBZ $2, n, try2
MOVWU.P 4(p), x2
MUL prime1, x2
ROR $64-23, h
EOR x2 @> 64-23, h, h
MADD h, prime3, prime2, h
try2:
TBZ $1, n, try1
MOVHU.P 2(p), x3
AND $255, x3, x1
LSR $8, x3, x2
MUL prime5, x1
ROR $64-11, h
EOR x1 @> 64-11, h, h
MUL prime1, h
MUL prime5, x2
ROR $64-11, h
EOR x2 @> 64-11, h, h
MUL prime1, h
try1:
TBZ $0, n, finalize
MOVBU (p), x4
MUL prime5, x4
ROR $64-11, h
EOR x4 @> 64-11, h, h
MUL prime1, h
finalize:
EOR h >> 33, h
MUL prime2, h
EOR h >> 29, h
MUL prime3, h
EOR h >> 32, h
MOVD h, ret+24(FP)
RET
// func writeBlocks(d *Digest, b []byte) int
TEXT ·writeBlocks(SB), NOSPLIT|NOFRAME, $0-40
LDP ·primes+0(SB), (prime1, prime2)
// Load state. Assume v[1-4] are stored contiguously.
MOVD d+0(FP), digest
LDP 0(digest), (v1, v2)
LDP 16(digest), (v3, v4)
LDP b_base+8(FP), (p, n)
blockLoop()
// Store updated state.
STP (v1, v2), 0(digest)
STP (v3, v4), 16(digest)
BIC $31, n
MOVD n, ret+32(FP)
RET

2
vendor/github.com/cespare/xxhash/v2/xxhash_amd64.go → vendor/github.com/cespare/xxhash/v2/xxhash_asm.go generated vendored
View file

@ -1,3 +1,5 @@
//go:build (amd64 || arm64) && !appengine && gc && !purego
// +build amd64 arm64
// +build !appengine
// +build gc
// +build !purego

22
vendor/github.com/cespare/xxhash/v2/xxhash_other.go generated vendored
View file

@ -1,4 +1,5 @@
// +build !amd64 appengine !gc purego
//go:build (!amd64 && !arm64) || appengine || !gc || purego
// +build !amd64,!arm64 appengine !gc purego
package xxhash
@ -14,10 +15,10 @@ func Sum64(b []byte) uint64 {
var h uint64
if n >= 32 {
v1 := prime1v + prime2
v1 := primes[0] + prime2
v2 := prime2
v3 := uint64(0)
v4 := -prime1v
v4 := -primes[0]
for len(b) >= 32 {
v1 = round(v1, u64(b[0:8:len(b)]))
v2 = round(v2, u64(b[8:16:len(b)]))
@ -36,19 +37,18 @@ func Sum64(b []byte) uint64 {
h += uint64(n)
i, end := 0, len(b)
for ; i+8 <= end; i += 8 {
k1 := round(0, u64(b[i:i+8:len(b)]))
for ; len(b) >= 8; b = b[8:] {
k1 := round(0, u64(b[:8]))
h ^= k1
h = rol27(h)*prime1 + prime4
}
if i+4 <= end {
h ^= uint64(u32(b[i:i+4:len(b)])) * prime1
if len(b) >= 4 {
h ^= uint64(u32(b[:4])) * prime1
h = rol23(h)*prime2 + prime3
i += 4
b = b[4:]
}
for ; i < end; i++ {
h ^= uint64(b[i]) * prime5
for ; len(b) > 0; b = b[1:] {
h ^= uint64(b[0]) * prime5
h = rol11(h) * prime1
}

1
vendor/github.com/cespare/xxhash/v2/xxhash_safe.go generated vendored
View file

@ -1,3 +1,4 @@
//go:build appengine
// +build appengine
// This file contains the safe implementations of otherwise unsafe-using code.

3
vendor/github.com/cespare/xxhash/v2/xxhash_unsafe.go generated vendored
View file

@ -1,3 +1,4 @@
//go:build !appengine
// +build !appengine
// This file encapsulates usage of unsafe.
@ -11,7 +12,7 @@ import (
// In the future it's possible that compiler optimizations will make these
// XxxString functions unnecessary by realizing that calls such as
// Sum64([]byte(s)) don't need to copy s. See https://golang.org/issue/2205.
// Sum64([]byte(s)) don't need to copy s. See https://go.dev/issue/2205.
// If that happens, even if we keep these functions they can be replaced with
// the trivial safe code.

1229
vendor/github.com/golang/glog/glog.go generated vendored
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305
vendor/github.com/golang/glog/glog_file.go generated vendored
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@ -1,6 +1,6 @@
// Go support for leveled logs, analogous to https://code.google.com/p/google-glog/
// Go support for leveled logs, analogous to https://github.com/google/glog.
//
// Copyright 2013 Google Inc. All Rights Reserved.
// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@ -19,26 +19,34 @@
package glog
import (
"bufio"
"bytes"
"errors"
"flag"
"fmt"
"io"
"os"
"os/user"
"path/filepath"
"runtime"
"strings"
"sync"
"time"
)
// MaxSize is the maximum size of a log file in bytes.
var MaxSize uint64 = 1024 * 1024 * 1800
"github.com/golang/glog/internal/logsink"
)
// logDirs lists the candidate directories for new log files.
var logDirs []string
// If non-empty, overrides the choice of directory in which to write logs.
// See createLogDirs for the full list of possible destinations.
var logDir = flag.String("log_dir", "", "If non-empty, write log files in this directory")
var (
// If non-empty, overrides the choice of directory in which to write logs.
// See createLogDirs for the full list of possible destinations.
logDir = flag.String("log_dir", "", "If non-empty, write log files in this directory")
logLink = flag.String("log_link", "", "If non-empty, add symbolic links in this directory to the log files")
logBufLevel = flag.Int("logbuflevel", int(logsink.Info), "Buffer log messages logged at this level or lower"+
" (-1 means don't buffer; 0 means buffer INFO only; ...). Has limited applicability on non-prod platforms.")
)
func createLogDirs() {
if *logDir != "" {
@ -64,9 +72,17 @@ func init() {
if err == nil {
userName = current.Username
}
// Sanitize userName since it may contain filepath separators on Windows.
userName = strings.Replace(userName, `\`, "_", -1)
// Sanitize userName since it is used to construct file paths.
userName = strings.Map(func(r rune) rune {
switch {
case r >= 'a' && r <= 'z':
case r >= 'A' && r <= 'Z':
case r >= '0' && r <= '9':
default:
return '_'
}
return r
}, userName)
}
// shortHostname returns its argument, truncating at the first period.
@ -122,3 +138,270 @@ func create(tag string, t time.Time) (f *os.File, filename string, err error) {
}
return nil, "", fmt.Errorf("log: cannot create log: %v", lastErr)
}
// flushSyncWriter is the interface satisfied by logging destinations.
type flushSyncWriter interface {
Flush() error
Sync() error
io.Writer
filenames() []string
}
var sinks struct {
stderr stderrSink
file fileSink
}
func init() {
sinks.stderr.w = os.Stderr
// Register stderr first: that way if we crash during file-writing at least
// the log will have gone somewhere.
logsink.TextSinks = append(logsink.TextSinks, &sinks.stderr, &sinks.file)
sinks.file.flushChan = make(chan logsink.Severity, 1)
go sinks.file.flushDaemon()
}
// stderrSink is a logsink.Text that writes log entries to stderr
// if they meet certain conditions.
type stderrSink struct {
mu sync.Mutex
w io.Writer
}
// Enabled implements logsink.Text.Enabled. It returns true if any of the
// various stderr flags are enabled for logs of the given severity, if the log
// message is from the standard "log" package, or if google.Init has not yet run
// (and hence file logging is not yet initialized).
func (s *stderrSink) Enabled(m *logsink.Meta) bool {
return toStderr || alsoToStderr || m.Severity >= stderrThreshold.get()
}
// Emit implements logsink.Text.Emit.
func (s *stderrSink) Emit(m *logsink.Meta, data []byte) (n int, err error) {
s.mu.Lock()
defer s.mu.Unlock()
dn, err := s.w.Write(data)
n += dn
return n, err
}
// severityWriters is an array of flushSyncWriter with a value for each
// logsink.Severity.
type severityWriters [4]flushSyncWriter
// fileSink is a logsink.Text that prints to a set of Google log files.
type fileSink struct {
mu sync.Mutex
// file holds writer for each of the log types.
file severityWriters
flushChan chan logsink.Severity
}
// Enabled implements logsink.Text.Enabled. It returns true if google.Init
// has run and both --disable_log_to_disk and --logtostderr are false.
func (s *fileSink) Enabled(m *logsink.Meta) bool {
return !toStderr
}
// Emit implements logsink.Text.Emit
func (s *fileSink) Emit(m *logsink.Meta, data []byte) (n int, err error) {
s.mu.Lock()
defer s.mu.Unlock()
if err = s.createMissingFiles(m.Severity); err != nil {
return 0, err
}
for sev := m.Severity; sev >= logsink.Info; sev-- {
if _, fErr := s.file[sev].Write(data); fErr != nil && err == nil {
err = fErr // Take the first error.
}
}
n = len(data)
if int(m.Severity) > *logBufLevel {
select {
case s.flushChan <- m.Severity:
default:
}
}
return n, err
}
// syncBuffer joins a bufio.Writer to its underlying file, providing access to the
// file's Sync method and providing a wrapper for the Write method that provides log
// file rotation. There are conflicting methods, so the file cannot be embedded.
// s.mu is held for all its methods.
type syncBuffer struct {
sink *fileSink
*bufio.Writer
file *os.File
names []string
sev logsink.Severity
nbytes uint64 // The number of bytes written to this file
}
func (sb *syncBuffer) Sync() error {
return sb.file.Sync()
}
func (sb *syncBuffer) Write(p []byte) (n int, err error) {
if sb.nbytes+uint64(len(p)) >= MaxSize {
if err := sb.rotateFile(time.Now()); err != nil {
return 0, err
}
}
n, err = sb.Writer.Write(p)
sb.nbytes += uint64(n)
return n, err
}
func (sb *syncBuffer) filenames() []string {
return sb.names
}
const footer = "\nCONTINUED IN NEXT FILE\n"
// rotateFile closes the syncBuffer's file and starts a new one.
func (sb *syncBuffer) rotateFile(now time.Time) error {
var err error
pn := "<none>"
file, name, err := create(sb.sev.String(), now)
if sb.file != nil {
// The current log file becomes the previous log at the end of
// this block, so save its name for use in the header of the next
// file.
pn = sb.file.Name()
sb.Flush()
// If there's an existing file, write a footer with the name of
// the next file in the chain, followed by the constant string
// \nCONTINUED IN NEXT FILE\n to make continuation detection simple.
sb.file.Write([]byte("Next log: "))
sb.file.Write([]byte(name))
sb.file.Write([]byte(footer))
sb.file.Close()
}
sb.file = file
sb.names = append(sb.names, name)
sb.nbytes = 0
if err != nil {
return err
}
sb.Writer = bufio.NewWriterSize(sb.file, bufferSize)
// Write header.
var buf bytes.Buffer
fmt.Fprintf(&buf, "Log file created at: %s\n", now.Format("2006/01/02 15:04:05"))
fmt.Fprintf(&buf, "Running on machine: %s\n", host)
fmt.Fprintf(&buf, "Binary: Built with %s %s for %s/%s\n", runtime.Compiler, runtime.Version(), runtime.GOOS, runtime.GOARCH)
fmt.Fprintf(&buf, "Previous log: %s\n", pn)
fmt.Fprintf(&buf, "Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg\n")
n, err := sb.file.Write(buf.Bytes())
sb.nbytes += uint64(n)
return err
}
// bufferSize sizes the buffer associated with each log file. It's large
// so that log records can accumulate without the logging thread blocking
// on disk I/O. The flushDaemon will block instead.
const bufferSize = 256 * 1024
// createMissingFiles creates all the log files for severity from infoLog up to
// upTo that have not already been created.
// s.mu is held.
func (s *fileSink) createMissingFiles(upTo logsink.Severity) error {
if s.file[upTo] != nil {
return nil
}
now := time.Now()
// Files are created in increasing severity order, so we can be assured that
// if a high severity logfile exists, then so do all of lower severity.
for sev := logsink.Info; sev <= upTo; sev++ {
if s.file[sev] != nil {
continue
}
sb := &syncBuffer{
sink: s,
sev: sev,
}
if err := sb.rotateFile(now); err != nil {
return err
}
s.file[sev] = sb
}
return nil
}
// flushDaemon periodically flushes the log file buffers.
func (s *fileSink) flushDaemon() {
tick := time.NewTicker(30 * time.Second)
defer tick.Stop()
for {
select {
case <-tick.C:
s.Flush()
case sev := <-s.flushChan:
s.flush(sev)
}
}
}
// Flush flushes all pending log I/O.
func Flush() {
sinks.file.Flush()
}
// Flush flushes all the logs and attempts to "sync" their data to disk.
func (s *fileSink) Flush() error {
return s.flush(logsink.Info)
}
// flush flushes all logs of severity threshold or greater.
func (s *fileSink) flush(threshold logsink.Severity) error {
s.mu.Lock()
defer s.mu.Unlock()
var firstErr error
updateErr := func(err error) {
if err != nil && firstErr == nil {
firstErr = err
}
}
// Flush from fatal down, in case there's trouble flushing.
for sev := logsink.Fatal; sev >= threshold; sev-- {
file := s.file[sev]
if file != nil {
updateErr(file.Flush())
updateErr(file.Sync())
}
}
return firstErr
}
// Names returns the names of the log files holding the FATAL, ERROR,
// WARNING, or INFO logs. Returns ErrNoLog if the log for the given
// level doesn't exist (e.g. because no messages of that level have been
// written). This may return multiple names if the log type requested
// has rolled over.
func Names(s string) ([]string, error) {
severity, err := logsink.ParseSeverity(s)
if err != nil {
return nil, err
}
sinks.file.mu.Lock()
defer sinks.file.mu.Unlock()
f := sinks.file.file[severity]
if f == nil {
return nil, ErrNoLog
}
return f.filenames(), nil
}

395
vendor/github.com/golang/glog/glog_flags.go generated vendored Normal file
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@ -0,0 +1,395 @@
// Go support for leveled logs, analogous to https://github.com/google/glog.
//
// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package glog
import (
"bytes"
"errors"
"flag"
"fmt"
"path/filepath"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"github.com/golang/glog/internal/logsink"
)
// modulePat contains a filter for the -vmodule flag.
// It holds a verbosity level and a file pattern to match.
type modulePat struct {
pattern string
literal bool // The pattern is a literal string
full bool // The pattern wants to match the full path
level Level
}
// match reports whether the file matches the pattern. It uses a string
// comparison if the pattern contains no metacharacters.
func (m *modulePat) match(full, file string) bool {
if m.literal {
if m.full {
return full == m.pattern
}
return file == m.pattern
}
if m.full {
match, _ := filepath.Match(m.pattern, full)
return match
}
match, _ := filepath.Match(m.pattern, file)
return match
}
// isLiteral reports whether the pattern is a literal string, that is, has no metacharacters
// that require filepath.Match to be called to match the pattern.
func isLiteral(pattern string) bool {
return !strings.ContainsAny(pattern, `\*?[]`)
}
// isFull reports whether the pattern matches the full file path, that is,
// whether it contains /.
func isFull(pattern string) bool {
return strings.ContainsRune(pattern, '/')
}
// verboseFlags represents the setting of the -v and -vmodule flags.
type verboseFlags struct {
// moduleLevelCache is a sync.Map storing the -vmodule Level for each V()
// call site, identified by PC. If there is no matching -vmodule filter,
// the cached value is exactly v. moduleLevelCache is replaced with a new
// Map whenever the -vmodule or -v flag changes state.
moduleLevelCache atomic.Value
// mu guards all fields below.
mu sync.Mutex
// v stores the value of the -v flag. It may be read safely using
// sync.LoadInt32, but is only modified under mu.
v Level
// module stores the parsed -vmodule flag.
module []modulePat
// moduleLength caches len(module). If greater than zero, it
// means vmodule is enabled. It may be read safely using sync.LoadInt32, but
// is only modified under mu.
moduleLength int32
}
// NOTE: For compatibility with the open-sourced v1 version of this
// package (github.com/golang/glog) we need to retain that flag.Level
// implements the flag.Value interface. See also go/log-vs-glog.
// String is part of the flag.Value interface.
func (l *Level) String() string {
return strconv.FormatInt(int64(l.Get().(Level)), 10)
}
// Get is part of the flag.Value interface.
func (l *Level) Get() any {
if l == &vflags.v {
// l is the value registered for the -v flag.
return Level(atomic.LoadInt32((*int32)(l)))
}
return *l
}
// Set is part of the flag.Value interface.
func (l *Level) Set(value string) error {
v, err := strconv.Atoi(value)
if err != nil {
return err
}
if l == &vflags.v {
// l is the value registered for the -v flag.
vflags.mu.Lock()
defer vflags.mu.Unlock()
vflags.moduleLevelCache.Store(&sync.Map{})
atomic.StoreInt32((*int32)(l), int32(v))
return nil
}
*l = Level(v)
return nil
}
// vModuleFlag is the flag.Value for the --vmodule flag.
type vModuleFlag struct{ *verboseFlags }
func (f vModuleFlag) String() string {
f.mu.Lock()
defer f.mu.Unlock()
var b bytes.Buffer
for i, f := range f.module {
if i > 0 {
b.WriteRune(',')
}
fmt.Fprintf(&b, "%s=%d", f.pattern, f.level)
}
return b.String()
}
// Get returns nil for this flag type since the struct is not exported.
func (f vModuleFlag) Get() any { return nil }
var errVmoduleSyntax = errors.New("syntax error: expect comma-separated list of filename=N")
// Syntax: -vmodule=recordio=2,foo/bar/baz=1,gfs*=3
func (f vModuleFlag) Set(value string) error {
var filter []modulePat
for _, pat := range strings.Split(value, ",") {
if len(pat) == 0 {
// Empty strings such as from a trailing comma can be ignored.
continue
}
patLev := strings.Split(pat, "=")
if len(patLev) != 2 || len(patLev[0]) == 0 || len(patLev[1]) == 0 {
return errVmoduleSyntax
}
pattern := patLev[0]
v, err := strconv.Atoi(patLev[1])
if err != nil {
return errors.New("syntax error: expect comma-separated list of filename=N")
}
// TODO: check syntax of filter?
filter = append(filter, modulePat{pattern, isLiteral(pattern), isFull(pattern), Level(v)})
}
f.mu.Lock()
defer f.mu.Unlock()
f.module = filter
atomic.StoreInt32((*int32)(&f.moduleLength), int32(len(f.module)))
f.moduleLevelCache.Store(&sync.Map{})
return nil
}
func (f *verboseFlags) levelForPC(pc uintptr) Level {
if level, ok := f.moduleLevelCache.Load().(*sync.Map).Load(pc); ok {
return level.(Level)
}
f.mu.Lock()
defer f.mu.Unlock()
level := Level(f.v)
fn := runtime.FuncForPC(pc)
file, _ := fn.FileLine(pc)
// The file is something like /a/b/c/d.go. We want just the d for
// regular matches, /a/b/c/d for full matches.
if strings.HasSuffix(file, ".go") {
file = file[:len(file)-3]
}
full := file
if slash := strings.LastIndex(file, "/"); slash >= 0 {
file = file[slash+1:]
}
for _, filter := range f.module {
if filter.match(full, file) {
level = filter.level
break // Use the first matching level.
}
}
f.moduleLevelCache.Load().(*sync.Map).Store(pc, level)
return level
}
func (f *verboseFlags) enabled(callerDepth int, level Level) bool {
if atomic.LoadInt32(&f.moduleLength) == 0 {
// No vmodule values specified, so compare against v level.
return Level(atomic.LoadInt32((*int32)(&f.v))) >= level
}
pcs := [1]uintptr{}
if runtime.Callers(callerDepth+2, pcs[:]) < 1 {
return false
}
frame, _ := runtime.CallersFrames(pcs[:]).Next()
return f.levelForPC(frame.Entry) >= level
}
// traceLocation represents an entry in the -log_backtrace_at flag.
type traceLocation struct {
file string
line int
}
var errTraceSyntax = errors.New("syntax error: expect file.go:234")
func parseTraceLocation(value string) (traceLocation, error) {
fields := strings.Split(value, ":")
if len(fields) != 2 {
return traceLocation{}, errTraceSyntax
}
file, lineStr := fields[0], fields[1]
if !strings.Contains(file, ".") {
return traceLocation{}, errTraceSyntax
}
line, err := strconv.Atoi(lineStr)
if err != nil {
return traceLocation{}, errTraceSyntax
}
if line < 0 {
return traceLocation{}, errors.New("negative value for line")
}
return traceLocation{file, line}, nil
}
// match reports whether the specified file and line matches the trace location.
// The argument file name is the full path, not the basename specified in the flag.
func (t traceLocation) match(file string, line int) bool {
if t.line != line {
return false
}
if i := strings.LastIndex(file, "/"); i >= 0 {
file = file[i+1:]
}
return t.file == file
}
func (t traceLocation) String() string {
return fmt.Sprintf("%s:%d", t.file, t.line)
}
// traceLocations represents the -log_backtrace_at flag.
// Syntax: -log_backtrace_at=recordio.go:234,sstable.go:456
// Note that unlike vmodule the file extension is included here.
type traceLocations struct {
mu sync.Mutex
locsLen int32 // Safe for atomic read without mu.
locs []traceLocation
}
func (t *traceLocations) String() string {
t.mu.Lock()
defer t.mu.Unlock()
var buf bytes.Buffer
for i, tl := range t.locs {
if i > 0 {
buf.WriteString(",")
}
buf.WriteString(tl.String())
}
return buf.String()
}
// Get always returns nil for this flag type since the struct is not exported
func (t *traceLocations) Get() any { return nil }
func (t *traceLocations) Set(value string) error {
var locs []traceLocation
for _, s := range strings.Split(value, ",") {
if s == "" {
continue
}
loc, err := parseTraceLocation(s)
if err != nil {
return err
}
locs = append(locs, loc)
}
t.mu.Lock()
defer t.mu.Unlock()
atomic.StoreInt32(&t.locsLen, int32(len(locs)))
t.locs = locs
return nil
}
func (t *traceLocations) match(file string, line int) bool {
if atomic.LoadInt32(&t.locsLen) == 0 {
return false
}
t.mu.Lock()
defer t.mu.Unlock()
for _, tl := range t.locs {
if tl.match(file, line) {
return true
}
}
return false
}
// severityFlag is an atomic flag.Value implementation for logsink.Severity.
type severityFlag int32
func (s *severityFlag) get() logsink.Severity {
return logsink.Severity(atomic.LoadInt32((*int32)(s)))
}
func (s *severityFlag) String() string { return strconv.FormatInt(int64(*s), 10) }
func (s *severityFlag) Get() any { return s.get() }
func (s *severityFlag) Set(value string) error {
threshold, err := logsink.ParseSeverity(value)
if err != nil {
// Not a severity name. Try a raw number.
v, err := strconv.Atoi(value)
if err != nil {
return err
}
threshold = logsink.Severity(v)
if threshold < logsink.Info || threshold > logsink.Fatal {
return fmt.Errorf("Severity %d out of range (min %d, max %d).", v, logsink.Info, logsink.Fatal)
}
}
atomic.StoreInt32((*int32)(s), int32(threshold))
return nil
}
var (
vflags verboseFlags // The -v and -vmodule flags.
logBacktraceAt traceLocations // The -log_backtrace_at flag.
// Boolean flags. Not handled atomically because the flag.Value interface
// does not let us avoid the =true, and that shorthand is necessary for
// compatibility. TODO: does this matter enough to fix? Seems unlikely.
toStderr bool // The -logtostderr flag.
alsoToStderr bool // The -alsologtostderr flag.
stderrThreshold severityFlag // The -stderrthreshold flag.
)
// verboseEnabled returns whether the caller at the given depth should emit
// verbose logs at the given level, with depth 0 identifying the caller of
// verboseEnabled.
func verboseEnabled(callerDepth int, level Level) bool {
return vflags.enabled(callerDepth+1, level)
}
// backtraceAt returns whether the logging call at the given function and line
// should also emit a backtrace of the current call stack.
func backtraceAt(file string, line int) bool {
return logBacktraceAt.match(file, line)
}
func init() {
vflags.moduleLevelCache.Store(&sync.Map{})
flag.Var(&vflags.v, "v", "log level for V logs")
flag.Var(vModuleFlag{&vflags}, "vmodule", "comma-separated list of pattern=N settings for file-filtered logging")
flag.Var(&logBacktraceAt, "log_backtrace_at", "when logging hits line file:N, emit a stack trace")
stderrThreshold = severityFlag(logsink.Error)
flag.BoolVar(&toStderr, "logtostderr", false, "log to standard error instead of files")
flag.BoolVar(&alsoToStderr, "alsologtostderr", false, "log to standard error as well as files")
flag.Var(&stderrThreshold, "stderrthreshold", "logs at or above this threshold go to stderr")
}

387
vendor/github.com/golang/glog/internal/logsink/logsink.go generated vendored Normal file
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@ -0,0 +1,387 @@
// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package logsink
import (
"bytes"
"fmt"
"strconv"
"strings"
"sync"
"time"
"github.com/golang/glog/internal/stackdump"
)
// MaxLogMessageLen is the limit on length of a formatted log message, including
// the standard line prefix and trailing newline.
//
// Chosen to match C++ glog.
const MaxLogMessageLen = 15000
// A Severity is a severity at which a message can be logged.
type Severity int8
// These constants identify the log levels in order of increasing severity.
// A message written to a high-severity log file is also written to each
// lower-severity log file.
const (
Info Severity = iota
Warning
Error
// Fatal contains logs written immediately before the process terminates.
//
// Sink implementations should not terminate the process themselves: the log
// package will perform any necessary cleanup and terminate the process as
// appropriate.
Fatal
)
func (s Severity) String() string {
switch s {
case Info:
return "INFO"
case Warning:
return "WARNING"
case Error:
return "ERROR"
case Fatal:
return "FATAL"
}
return fmt.Sprintf("%T(%d)", s, s)
}
// ParseSeverity returns the case-insensitive Severity value for the given string.
func ParseSeverity(name string) (Severity, error) {
name = strings.ToUpper(name)
for s := Info; s <= Fatal; s++ {
if s.String() == name {
return s, nil
}
}
return -1, fmt.Errorf("logsink: invalid severity %q", name)
}
// Meta is metadata about a logging call.
type Meta struct {
// Time is the time at which the log call was made.
Time time.Time
// File is the source file from which the log entry originates.
File string
// Line is the line offset within the source file.
Line int
// Depth is the number of stack frames between the logsink and the log call.
Depth int
Severity Severity
// Verbose indicates whether the call was made via "log.V". Log entries below
// the current verbosity threshold are not sent to the sink.
Verbose bool
// Thread ID. This can be populated with a thread ID from another source,
// such as a system we are importing logs from. In the normal case, this
// will be set to the process ID (PID), since Go doesn't have threads.
Thread int64
// Stack trace starting in the logging function. May be nil.
// A logsink should implement the StackWanter interface to request this.
//
// Even if WantStack returns false, this field may be set (e.g. if another
// sink wants a stack trace).
Stack *stackdump.Stack
}
// Structured is a logging destination that accepts structured data as input.
type Structured interface {
// Printf formats according to a fmt.Printf format specifier and writes a log
// entry. The precise result of formatting depends on the sink, but should
// aim for consistency with fmt.Printf.
//
// Printf returns the number of bytes occupied by the log entry, which
// may not be equal to the total number of bytes written.
//
// Printf returns any error encountered *if* it is severe enough that the log
// package should terminate the process.
//
// The sink must not modify the *Meta parameter, nor reference it after
// Printf has returned: it may be reused in subsequent calls.
Printf(meta *Meta, format string, a ...any) (n int, err error)
}
// StackWanter can be implemented by a logsink.Structured to indicate that it
// wants a stack trace to accompany at least some of the log messages it receives.
type StackWanter interface {
// WantStack returns true if the sink requires a stack trace for a log message
// with this metadata.
//
// NOTE: Returning true implies that meta.Stack will be non-nil. Returning
// false does NOT imply that meta.Stack will be nil.
WantStack(meta *Meta) bool
}
// Text is a logging destination that accepts pre-formatted log lines (instead of
// structured data).
type Text interface {
// Enabled returns whether this sink should output messages for the given
// Meta. If the sink returns false for a given Meta, the Printf function will
// not call Emit on it for the corresponding log message.
Enabled(*Meta) bool
// Emit writes a pre-formatted text log entry (including any applicable
// header) to the log. It returns the number of bytes occupied by the entry
// (which may differ from the length of the passed-in slice).
//
// Emit returns any error encountered *if* it is severe enough that the log
// package should terminate the process.
//
// The sink must not modify the *Meta parameter, nor reference it after
// Printf has returned: it may be reused in subsequent calls.
//
// NOTE: When developing a text sink, keep in mind the surface in which the
// logs will be displayed, and whether it's important that the sink be
// resistent to tampering in the style of b/211428300. Standard text sinks
// (like `stderrSink`) do not protect against this (e.g. by escaping
// characters) because the cases where they would show user-influenced bytes
// are vanishingly small.
Emit(*Meta, []byte) (n int, err error)
}
// bufs is a pool of *bytes.Buffer used in formatting log entries.
var bufs sync.Pool // Pool of *bytes.Buffer.
// textPrintf formats a text log entry and emits it to all specified Text sinks.
//
// The returned n is the maximum across all Emit calls.
// The returned err is the first non-nil error encountered.
// Sinks that are disabled by configuration should return (0, nil).
func textPrintf(m *Meta, textSinks []Text, format string, args ...any) (n int, err error) {
// We expect at most file, stderr, and perhaps syslog. If there are more,
// we'll end up allocating - no big deal.
const maxExpectedTextSinks = 3
var noAllocSinks [maxExpectedTextSinks]Text
sinks := noAllocSinks[:0]
for _, s := range textSinks {
if s.Enabled(m) {
sinks = append(sinks, s)
}
}
if len(sinks) == 0 && m.Severity != Fatal {
return 0, nil // No TextSinks specified; don't bother formatting.
}
bufi := bufs.Get()
var buf *bytes.Buffer
if bufi == nil {
buf = bytes.NewBuffer(nil)
bufi = buf
} else {
buf = bufi.(*bytes.Buffer)
buf.Reset()
}
// Lmmdd hh:mm:ss.uuuuuu PID/GID file:line]
//
// The "PID" entry arguably ought to be TID for consistency with other
// environments, but TID is not meaningful in a Go program due to the
// multiplexing of goroutines across threads.
//
// Avoid Fprintf, for speed. The format is so simple that we can do it quickly by hand.
// It's worth about 3X. Fprintf is hard.
const severityChar = "IWEF"
buf.WriteByte(severityChar[m.Severity])
_, month, day := m.Time.Date()
hour, minute, second := m.Time.Clock()
twoDigits(buf, int(month))
twoDigits(buf, day)
buf.WriteByte(' ')
twoDigits(buf, hour)
buf.WriteByte(':')
twoDigits(buf, minute)
buf.WriteByte(':')
twoDigits(buf, second)
buf.WriteByte('.')
nDigits(buf, 6, uint64(m.Time.Nanosecond()/1000), '0')
buf.WriteByte(' ')
nDigits(buf, 7, uint64(m.Thread), ' ')
buf.WriteByte(' ')
{
file := m.File
if i := strings.LastIndex(file, "/"); i >= 0 {
file = file[i+1:]
}
buf.WriteString(file)
}
buf.WriteByte(':')
{
var tmp [19]byte
buf.Write(strconv.AppendInt(tmp[:0], int64(m.Line), 10))
}
buf.WriteString("] ")
msgStart := buf.Len()
fmt.Fprintf(buf, format, args...)
if buf.Len() > MaxLogMessageLen-1 {
buf.Truncate(MaxLogMessageLen - 1)
}
msgEnd := buf.Len()
if b := buf.Bytes(); b[len(b)-1] != '\n' {
buf.WriteByte('\n')
}
for _, s := range sinks {
sn, sErr := s.Emit(m, buf.Bytes())
if sn > n {
n = sn
}
if sErr != nil && err == nil {
err = sErr
}
}
if m.Severity == Fatal {
savedM := *m
fatalMessageStore(savedEntry{
meta: &savedM,
msg: buf.Bytes()[msgStart:msgEnd],
})
} else {
bufs.Put(bufi)
}
return n, err
}
const digits = "0123456789"
// twoDigits formats a zero-prefixed two-digit integer to buf.
func twoDigits(buf *bytes.Buffer, d int) {
buf.WriteByte(digits[(d/10)%10])
buf.WriteByte(digits[d%10])
}
// nDigits formats an n-digit integer to buf, padding with pad on the left. It
// assumes d != 0.
func nDigits(buf *bytes.Buffer, n int, d uint64, pad byte) {
var tmp [20]byte
cutoff := len(tmp) - n
j := len(tmp) - 1
for ; d > 0; j-- {
tmp[j] = digits[d%10]
d /= 10
}
for ; j >= cutoff; j-- {
tmp[j] = pad
}
j++
buf.Write(tmp[j:])
}
// Printf writes a log entry to all registered TextSinks in this package, then
// to all registered StructuredSinks.
//
// The returned n is the maximum across all Emit and Printf calls.
// The returned err is the first non-nil error encountered.
// Sinks that are disabled by configuration should return (0, nil).
func Printf(m *Meta, format string, args ...any) (n int, err error) {
m.Depth++
n, err = textPrintf(m, TextSinks, format, args...)
for _, sink := range StructuredSinks {
// TODO: Support TextSinks that implement StackWanter?
if sw, ok := sink.(StackWanter); ok && sw.WantStack(m) {
if m.Stack == nil {
// First, try to find a stacktrace in args, otherwise generate one.
for _, arg := range args {
if stack, ok := arg.(stackdump.Stack); ok {
m.Stack = &stack
break
}
}
if m.Stack == nil {
stack := stackdump.Caller( /* skipDepth = */ m.Depth)
m.Stack = &stack
}
}
}
sn, sErr := sink.Printf(m, format, args...)
if sn > n {
n = sn
}
if sErr != nil && err == nil {
err = sErr
}
}
return n, err
}
// The sets of sinks to which logs should be written.
//
// These must only be modified during package init, and are read-only thereafter.
var (
// StructuredSinks is the set of Structured sink instances to which logs
// should be written.
StructuredSinks []Structured
// TextSinks is the set of Text sink instances to which logs should be
// written.
//
// These are registered separately from Structured sink implementations to
// avoid the need to repeat the work of formatting a message for each Text
// sink that writes it. The package-level Printf function writes to both sets
// independenty, so a given log destination should only register a Structured
// *or* a Text sink (not both).
TextSinks []Text
)
type savedEntry struct {
meta *Meta
msg []byte
}
// StructuredTextWrapper is a Structured sink which forwards logs to a set of Text sinks.
//
// The purpose of this sink is to allow applications to intercept logging calls before they are
// serialized and sent to Text sinks. For example, if one needs to redact PII from logging
// arguments before they reach STDERR, one solution would be to do the redacting in a Structured
// sink that forwards logs to a StructuredTextWrapper instance, and make STDERR a child of that
// StructuredTextWrapper instance. This is how one could set this up in their application:
//
// func init() {
//
// wrapper := logsink.StructuredTextWrapper{TextSinks: logsink.TextSinks}
// // sanitizersink will intercept logs and remove PII
// sanitizer := sanitizersink{Sink: &wrapper}
// logsink.StructuredSinks = append(logsink.StructuredSinks, &sanitizer)
// logsink.TextSinks = nil
//
// }
type StructuredTextWrapper struct {
// TextSinks is the set of Text sinks that should receive logs from this
// StructuredTextWrapper instance.
TextSinks []Text
}
// Printf forwards logs to all Text sinks registered in the StructuredTextWrapper.
func (w *StructuredTextWrapper) Printf(meta *Meta, format string, args ...any) (n int, err error) {
return textPrintf(meta, w.TextSinks, format, args...)
}

35
vendor/github.com/golang/glog/internal/logsink/logsink_fatal.go generated vendored Normal file
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@ -0,0 +1,35 @@
package logsink
import (
"sync/atomic"
"unsafe"
)
func fatalMessageStore(e savedEntry) {
// Only put a new one in if we haven't assigned before.
atomic.CompareAndSwapPointer(&fatalMessage, nil, unsafe.Pointer(&e))
}
var fatalMessage unsafe.Pointer // savedEntry stored with CompareAndSwapPointer
// FatalMessage returns the Meta and message contents of the first message
// logged with Fatal severity, or false if none has occurred.
func FatalMessage() (*Meta, []byte, bool) {
e := (*savedEntry)(atomic.LoadPointer(&fatalMessage))
if e == nil {
return nil, nil, false
}
return e.meta, e.msg, true
}
// DoNotUseRacyFatalMessage is FatalMessage, but worse.
//
//go:norace
//go:nosplit
func DoNotUseRacyFatalMessage() (*Meta, []byte, bool) {
e := (*savedEntry)(fatalMessage)
if e == nil {
return nil, nil, false
}
return e.meta, e.msg, true
}

127
vendor/github.com/golang/glog/internal/stackdump/stackdump.go generated vendored Normal file
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@ -0,0 +1,127 @@
// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package stackdump provides wrappers for runtime.Stack and runtime.Callers
// with uniform support for skipping caller frames.
//
// ⚠ Unlike the functions in the runtime package, these may allocate a
// non-trivial quantity of memory: use them with care. ⚠
package stackdump
import (
"bytes"
"runtime"
)
// runtimeStackSelfFrames is 1 if runtime.Stack includes the call to
// runtime.Stack itself or 0 if it does not.
//
// As of 2016-04-27, the gccgo compiler includes runtime.Stack but the gc
// compiler does not.
var runtimeStackSelfFrames = func() int {
for n := 1 << 10; n < 1<<20; n *= 2 {
buf := make([]byte, n)
n := runtime.Stack(buf, false)
if bytes.Contains(buf[:n], []byte("runtime.Stack")) {
return 1
} else if n < len(buf) || bytes.Count(buf, []byte("\n")) >= 3 {
return 0
}
}
return 0
}()
// Stack is a stack dump for a single goroutine.
type Stack struct {
// Text is a representation of the stack dump in a human-readable format.
Text []byte
// PC is a representation of the stack dump using raw program counter values.
PC []uintptr
}
func (s Stack) String() string { return string(s.Text) }
// Caller returns the Stack dump for the calling goroutine, starting skipDepth
// frames before the caller of Caller. (Caller(0) provides a dump starting at
// the caller of this function.)
func Caller(skipDepth int) Stack {
return Stack{
Text: CallerText(skipDepth + 1),
PC: CallerPC(skipDepth + 1),
}
}
// CallerText returns a textual dump of the stack starting skipDepth frames before
// the caller. (CallerText(0) provides a dump starting at the caller of this
// function.)
func CallerText(skipDepth int) []byte {
for n := 1 << 10; ; n *= 2 {
buf := make([]byte, n)
n := runtime.Stack(buf, false)
if n < len(buf) {
return pruneFrames(skipDepth+1+runtimeStackSelfFrames, buf[:n])
}
}
}
// CallerPC returns a dump of the program counters of the stack starting
// skipDepth frames before the caller. (CallerPC(0) provides a dump starting at
// the caller of this function.)
func CallerPC(skipDepth int) []uintptr {
for n := 1 << 8; ; n *= 2 {
buf := make([]uintptr, n)
n := runtime.Callers(skipDepth+2, buf)
if n < len(buf) {
return buf[:n]
}
}
}
// pruneFrames removes the topmost skipDepth frames of the first goroutine in a
// textual stack dump. It overwrites the passed-in slice.
//
// If there are fewer than skipDepth frames in the first goroutine's stack,
// pruneFrames prunes it to an empty stack and leaves the remaining contents
// intact.
func pruneFrames(skipDepth int, stack []byte) []byte {
headerLen := 0
for i, c := range stack {
if c == '\n' {
headerLen = i + 1
break
}
}
if headerLen == 0 {
return stack // No header line - not a well-formed stack trace.
}
skipLen := headerLen
skipNewlines := skipDepth * 2
for ; skipLen < len(stack) && skipNewlines > 0; skipLen++ {
c := stack[skipLen]
if c != '\n' {
continue
}
skipNewlines--
skipLen++
if skipNewlines == 0 || skipLen == len(stack) || stack[skipLen] == '\n' {
break
}
}
pruned := stack[skipLen-headerLen:]
copy(pruned, stack[:headerLen])
return pruned
}

8
vendor/github.com/golang/protobuf/jsonpb/decode.go generated vendored
View file

@ -386,8 +386,14 @@ func (u *Unmarshaler) unmarshalMessage(m protoreflect.Message, in []byte) error
}
func isSingularWellKnownValue(fd protoreflect.FieldDescriptor) bool {
if fd.Cardinality() == protoreflect.Repeated {
return false
}
if md := fd.Message(); md != nil {
return md.FullName() == "google.protobuf.Value" && fd.Cardinality() != protoreflect.Repeated
return md.FullName() == "google.protobuf.Value"
}
if ed := fd.Enum(); ed != nil {
return ed.FullName() == "google.protobuf.NullValue"
}
return false
}

62
vendor/github.com/golang/protobuf/ptypes/empty/empty.pb.go generated vendored
View file

@ -1,62 +0,0 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: github.com/golang/protobuf/ptypes/empty/empty.proto
package empty
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
emptypb "google.golang.org/protobuf/types/known/emptypb"
reflect "reflect"
)
// Symbols defined in public import of google/protobuf/empty.proto.
type Empty = emptypb.Empty
var File_github_com_golang_protobuf_ptypes_empty_empty_proto protoreflect.FileDescriptor
var file_github_com_golang_protobuf_ptypes_empty_empty_proto_rawDesc = []byte{
0x0a, 0x33, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79,
0x70, 0x65, 0x73, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72,
0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e, 0x70, 0x72, 0x6f,
0x74, 0x6f, 0x42, 0x2f, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
0x2f, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66,
0x2f, 0x70, 0x74, 0x79, 0x70, 0x65, 0x73, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x3b, 0x65, 0x6d,
0x70, 0x74, 0x79, 0x50, 0x00, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
}
var file_github_com_golang_protobuf_ptypes_empty_empty_proto_goTypes = []interface{}{}
var file_github_com_golang_protobuf_ptypes_empty_empty_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_github_com_golang_protobuf_ptypes_empty_empty_proto_init() }
func file_github_com_golang_protobuf_ptypes_empty_empty_proto_init() {
if File_github_com_golang_protobuf_ptypes_empty_empty_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_github_com_golang_protobuf_ptypes_empty_empty_proto_rawDesc,
NumEnums: 0,
NumMessages: 0,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_github_com_golang_protobuf_ptypes_empty_empty_proto_goTypes,
DependencyIndexes: file_github_com_golang_protobuf_ptypes_empty_empty_proto_depIdxs,
}.Build()
File_github_com_golang_protobuf_ptypes_empty_empty_proto = out.File
file_github_com_golang_protobuf_ptypes_empty_empty_proto_rawDesc = nil
file_github_com_golang_protobuf_ptypes_empty_empty_proto_goTypes = nil
file_github_com_golang_protobuf_ptypes_empty_empty_proto_depIdxs = nil
}

6
vendor/github.com/google/s2a-go/.gitignore generated vendored Normal file
View file

@ -0,0 +1,6 @@
# Ignore binaries without extension
//example/client/client
//example/server/server
//internal/v2/fakes2av2_server/fakes2av2_server
.idea/

93
vendor/github.com/google/s2a-go/CODE_OF_CONDUCT.md generated vendored Normal file
View file

@ -0,0 +1,93 @@
# Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, gender identity and expression, level of
experience, education, socio-economic status, nationality, personal appearance,
race, religion, or sexual identity and orientation.
## Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable
behavior and are expected to take appropriate and fair corrective action in
response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned to this Code of Conduct, or to ban temporarily or permanently any
contributor for other behaviors that they deem inappropriate, threatening,
offensive, or harmful.
## Scope
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an appointed
representative at an online or offline event. Representation of a project may be
further defined and clarified by project maintainers.
This Code of Conduct also applies outside the project spaces when the Project
Steward has a reasonable belief that an individual's behavior may have a
negative impact on the project or its community.
## Conflict Resolution
We do not believe that all conflict is bad; healthy debate and disagreement
often yield positive results. However, it is never okay to be disrespectful or
to engage in behavior that violates the project’s code of conduct.
If you see someone violating the code of conduct, you are encouraged to address
the behavior directly with those involved. Many issues can be resolved quickly
and easily, and this gives people more control over the outcome of their
dispute. If you are unable to resolve the matter for any reason, or if the
behavior is threatening or harassing, report it. We are dedicated to providing
an environment where participants feel welcome and safe.
Reports should be directed to *[PROJECT STEWARD NAME(s) AND EMAIL(s)]*, the
Project Steward(s) for *[PROJECT NAME]*. It is the Project Steward’s duty to
receive and address reported violations of the code of conduct. They will then
work with a committee consisting of representatives from the Open Source
Programs Office and the Google Open Source Strategy team. If for any reason you
are uncomfortable reaching out to the Project Steward, please email
opensource@google.com.
We will investigate every complaint, but you may not receive a direct response.
We will use our discretion in determining when and how to follow up on reported
incidents, which may range from not taking action to permanent expulsion from
the project and project-sponsored spaces. We will notify the accused of the
report and provide them an opportunity to discuss it before any action is taken.
The identity of the reporter will be omitted from the details of the report
supplied to the accused. In potentially harmful situations, such as ongoing
harassment or threats to anyone's safety, we may take action without notice.
## Attribution
This Code of Conduct is adapted from the Contributor Covenant, version 1.4,
available at
https://www.contributor-covenant.org/version/1/4/code-of-conduct.html

29
vendor/github.com/google/s2a-go/CONTRIBUTING.md generated vendored Normal file
View file

@ -0,0 +1,29 @@
# How to Contribute
We'd love to accept your patches and contributions to this project. There are
just a few small guidelines you need to follow.
## Contributor License Agreement
Contributions to this project must be accompanied by a Contributor License
Agreement (CLA). You (or your employer) retain the copyright to your
contribution; this simply gives us permission to use and redistribute your
contributions as part of the project. Head over to
<https://cla.developers.google.com/> to see your current agreements on file or
to sign a new one.
You generally only need to submit a CLA once, so if you've already submitted one
(even if it was for a different project), you probably don't need to do it
again.
## Code reviews
All submissions, including submissions by project members, require review. We
use GitHub pull requests for this purpose. Consult
[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
information on using pull requests.
## Community Guidelines
This project follows
[Google's Open Source Community Guidelines](https://opensource.google/conduct/).

202
vendor/github.com/google/s2a-go/LICENSE.md generated vendored Normal file
View file

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
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# Secure Session Agent Client Libraries
The Secure Session Agent is a service that enables a workload to offload select
operations from the mTLS handshake and protects a workload's private key
material from exfiltration. Specifically, the workload asks the Secure Session
Agent for the TLS configuration to use during the handshake, to perform private
key operations, and to validate the peer certificate chain. The Secure Session
Agent's client libraries enable applications to communicate with the Secure
Session Agent during the TLS handshake, and to encrypt traffic to the peer
after the TLS handshake is complete.
This repository contains the source code for the Secure Session Agent's Go
client libraries, which allow gRPC-Go applications to use the Secure Session
Agent. This repository supports the Bazel and Golang build systems.
All code in this repository is experimental and subject to change. We do not
guarantee API stability at this time.

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/*
*
* Copyright 2023 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package fallback provides default implementations of fallback options when S2A fails.
package fallback
import (
"context"
"crypto/tls"
"fmt"
"net"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/grpclog"
)
const (
alpnProtoStrH2 = "h2"
alpnProtoStrHTTP = "http/1.1"
defaultHTTPSPort = "443"
)
// FallbackTLSConfigGRPC is a tls.Config used by the DefaultFallbackClientHandshakeFunc function.
// It supports GRPC use case, thus the alpn is set to 'h2'.
var FallbackTLSConfigGRPC = tls.Config{
MinVersion: tls.VersionTLS13,
ClientSessionCache: nil,
NextProtos: []string{alpnProtoStrH2},
}
// FallbackTLSConfigHTTP is a tls.Config used by the DefaultFallbackDialerAndAddress func.
// It supports the HTTP use case and the alpn is set to both 'http/1.1' and 'h2'.
var FallbackTLSConfigHTTP = tls.Config{
MinVersion: tls.VersionTLS13,
ClientSessionCache: nil,
NextProtos: []string{alpnProtoStrH2, alpnProtoStrHTTP},
}
// ClientHandshake establishes a TLS connection and returns it, plus its auth info.
// Inputs:
//
// targetServer: the server attempted with S2A.
// conn: the tcp connection to the server at address targetServer that was passed into S2A's ClientHandshake func.
// If fallback is successful, the `conn` should be closed.
// err: the error encountered when performing the client-side TLS handshake with S2A.
type ClientHandshake func(ctx context.Context, targetServer string, conn net.Conn, err error) (net.Conn, credentials.AuthInfo, error)
// DefaultFallbackClientHandshakeFunc returns a ClientHandshake function,
// which establishes a TLS connection to the provided fallbackAddr, returns the new connection and its auth info.
// Example use:
//
// transportCreds, _ = s2a.NewClientCreds(&s2a.ClientOptions{
// S2AAddress: s2aAddress,
// FallbackOpts: &s2a.FallbackOptions{ // optional
// FallbackClientHandshakeFunc: fallback.DefaultFallbackClientHandshakeFunc(fallbackAddr),
// },
// })
//
// The fallback server's certificate must be verifiable using OS root store.
// The fallbackAddr is expected to be a network address, e.g. example.com:port. If port is not specified,
// it uses default port 443.
// In the returned function's TLS config, ClientSessionCache is explicitly set to nil to disable TLS resumption,
// and min TLS version is set to 1.3.
func DefaultFallbackClientHandshakeFunc(fallbackAddr string) (ClientHandshake, error) {
var fallbackDialer = tls.Dialer{Config: &FallbackTLSConfigGRPC}
return defaultFallbackClientHandshakeFuncInternal(fallbackAddr, fallbackDialer.DialContext)
}
func defaultFallbackClientHandshakeFuncInternal(fallbackAddr string, dialContextFunc func(context.Context, string, string) (net.Conn, error)) (ClientHandshake, error) {
fallbackServerAddr, err := processFallbackAddr(fallbackAddr)
if err != nil {
if grpclog.V(1) {
grpclog.Infof("error processing fallback address [%s]: %v", fallbackAddr, err)
}
return nil, err
}
return func(ctx context.Context, targetServer string, conn net.Conn, s2aErr error) (net.Conn, credentials.AuthInfo, error) {
fbConn, fbErr := dialContextFunc(ctx, "tcp", fallbackServerAddr)
if fbErr != nil {
grpclog.Infof("dialing to fallback server %s failed: %v", fallbackServerAddr, fbErr)
return nil, nil, fmt.Errorf("dialing to fallback server %s failed: %v; S2A client handshake with %s error: %w", fallbackServerAddr, fbErr, targetServer, s2aErr)
}
tc, success := fbConn.(*tls.Conn)
if !success {
grpclog.Infof("the connection with fallback server is expected to be tls but isn't")
return nil, nil, fmt.Errorf("the connection with fallback server is expected to be tls but isn't; S2A client handshake with %s error: %w", targetServer, s2aErr)
}
tlsInfo := credentials.TLSInfo{
State: tc.ConnectionState(),
CommonAuthInfo: credentials.CommonAuthInfo{
SecurityLevel: credentials.PrivacyAndIntegrity,
},
}
if grpclog.V(1) {
grpclog.Infof("ConnectionState.NegotiatedProtocol: %v", tc.ConnectionState().NegotiatedProtocol)
grpclog.Infof("ConnectionState.HandshakeComplete: %v", tc.ConnectionState().HandshakeComplete)
grpclog.Infof("ConnectionState.ServerName: %v", tc.ConnectionState().ServerName)
}
conn.Close()
return fbConn, tlsInfo, nil
}, nil
}
// DefaultFallbackDialerAndAddress returns a TLS dialer and the network address to dial.
// Example use:
//
// fallbackDialer, fallbackServerAddr := fallback.DefaultFallbackDialerAndAddress(fallbackAddr)
// dialTLSContext := s2a.NewS2aDialTLSContextFunc(&s2a.ClientOptions{
// S2AAddress: s2aAddress, // required
// FallbackOpts: &s2a.FallbackOptions{
// FallbackDialer: &s2a.FallbackDialer{
// Dialer: fallbackDialer,
// ServerAddr: fallbackServerAddr,
// },
// },
// })
//
// The fallback server's certificate should be verifiable using OS root store.
// The fallbackAddr is expected to be a network address, e.g. example.com:port. If port is not specified,
// it uses default port 443.
// In the returned function's TLS config, ClientSessionCache is explicitly set to nil to disable TLS resumption,
// and min TLS version is set to 1.3.
func DefaultFallbackDialerAndAddress(fallbackAddr string) (*tls.Dialer, string, error) {
fallbackServerAddr, err := processFallbackAddr(fallbackAddr)
if err != nil {
if grpclog.V(1) {
grpclog.Infof("error processing fallback address [%s]: %v", fallbackAddr, err)
}
return nil, "", err
}
return &tls.Dialer{Config: &FallbackTLSConfigHTTP}, fallbackServerAddr, nil
}
func processFallbackAddr(fallbackAddr string) (string, error) {
var fallbackServerAddr string
var err error
if fallbackAddr == "" {
return "", fmt.Errorf("empty fallback address")
}
_, _, err = net.SplitHostPort(fallbackAddr)
if err != nil {
// fallbackAddr does not have port suffix
fallbackServerAddr = net.JoinHostPort(fallbackAddr, defaultHTTPSPort)
} else {
// FallbackServerAddr already has port suffix
fallbackServerAddr = fallbackAddr
}
return fallbackServerAddr, nil
}

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vendor/github.com/google/s2a-go/internal/authinfo/authinfo.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package authinfo provides authentication and authorization information that
// results from the TLS handshake.
package authinfo
import (
"errors"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
contextpb "github.com/google/s2a-go/internal/proto/s2a_context_go_proto"
grpcpb "github.com/google/s2a-go/internal/proto/s2a_go_proto"
"google.golang.org/grpc/credentials"
)
var _ credentials.AuthInfo = (*S2AAuthInfo)(nil)
const s2aAuthType = "s2a"
// S2AAuthInfo exposes authentication and authorization information from the
// S2A session result to the gRPC stack.
type S2AAuthInfo struct {
s2aContext *contextpb.S2AContext
commonAuthInfo credentials.CommonAuthInfo
}
// NewS2AAuthInfo returns a new S2AAuthInfo object from the S2A session result.
func NewS2AAuthInfo(result *grpcpb.SessionResult) (credentials.AuthInfo, error) {
return newS2AAuthInfo(result)
}
func newS2AAuthInfo(result *grpcpb.SessionResult) (*S2AAuthInfo, error) {
if result == nil {
return nil, errors.New("NewS2aAuthInfo given nil session result")
}
return &S2AAuthInfo{
s2aContext: &contextpb.S2AContext{
ApplicationProtocol: result.GetApplicationProtocol(),
TlsVersion: result.GetState().GetTlsVersion(),
Ciphersuite: result.GetState().GetTlsCiphersuite(),
PeerIdentity: result.GetPeerIdentity(),
LocalIdentity: result.GetLocalIdentity(),
PeerCertFingerprint: result.GetPeerCertFingerprint(),
LocalCertFingerprint: result.GetLocalCertFingerprint(),
IsHandshakeResumed: result.GetState().GetIsHandshakeResumed(),
},
commonAuthInfo: credentials.CommonAuthInfo{SecurityLevel: credentials.PrivacyAndIntegrity},
}, nil
}
// AuthType returns the authentication type.
func (s *S2AAuthInfo) AuthType() string {
return s2aAuthType
}
// ApplicationProtocol returns the application protocol, e.g. "grpc".
func (s *S2AAuthInfo) ApplicationProtocol() string {
return s.s2aContext.GetApplicationProtocol()
}
// TLSVersion returns the TLS version negotiated during the handshake.
func (s *S2AAuthInfo) TLSVersion() commonpb.TLSVersion {
return s.s2aContext.GetTlsVersion()
}
// Ciphersuite returns the ciphersuite negotiated during the handshake.
func (s *S2AAuthInfo) Ciphersuite() commonpb.Ciphersuite {
return s.s2aContext.GetCiphersuite()
}
// PeerIdentity returns the authenticated identity of the peer.
func (s *S2AAuthInfo) PeerIdentity() *commonpb.Identity {
return s.s2aContext.GetPeerIdentity()
}
// LocalIdentity returns the local identity of the application used during
// session setup.
func (s *S2AAuthInfo) LocalIdentity() *commonpb.Identity {
return s.s2aContext.GetLocalIdentity()
}
// PeerCertFingerprint returns the SHA256 hash of the peer certificate used in
// the S2A handshake.
func (s *S2AAuthInfo) PeerCertFingerprint() []byte {
return s.s2aContext.GetPeerCertFingerprint()
}
// LocalCertFingerprint returns the SHA256 hash of the local certificate used
// in the S2A handshake.
func (s *S2AAuthInfo) LocalCertFingerprint() []byte {
return s.s2aContext.GetLocalCertFingerprint()
}
// IsHandshakeResumed returns true if a cached session was used to resume
// the handshake.
func (s *S2AAuthInfo) IsHandshakeResumed() bool {
return s.s2aContext.GetIsHandshakeResumed()
}
// SecurityLevel returns the security level of the connection.
func (s *S2AAuthInfo) SecurityLevel() credentials.SecurityLevel {
return s.commonAuthInfo.SecurityLevel
}

438
vendor/github.com/google/s2a-go/internal/handshaker/handshaker.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package handshaker communicates with the S2A handshaker service.
package handshaker
import (
"context"
"errors"
"fmt"
"io"
"net"
"sync"
"github.com/google/s2a-go/internal/authinfo"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
s2apb "github.com/google/s2a-go/internal/proto/s2a_go_proto"
"github.com/google/s2a-go/internal/record"
"github.com/google/s2a-go/internal/tokenmanager"
grpc "google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/grpclog"
)
var (
// appProtocol contains the application protocol accepted by the handshaker.
appProtocol = "grpc"
// frameLimit is the maximum size of a frame in bytes.
frameLimit = 1024 * 64
// peerNotRespondingError is the error thrown when the peer doesn't respond.
errPeerNotResponding = errors.New("peer is not responding and re-connection should be attempted")
)
// Handshaker defines a handshaker interface.
type Handshaker interface {
// ClientHandshake starts and completes a TLS handshake from the client side,
// and returns a secure connection along with additional auth information.
ClientHandshake(ctx context.Context) (net.Conn, credentials.AuthInfo, error)
// ServerHandshake starts and completes a TLS handshake from the server side,
// and returns a secure connection along with additional auth information.
ServerHandshake(ctx context.Context) (net.Conn, credentials.AuthInfo, error)
// Close terminates the Handshaker. It should be called when the handshake
// is complete.
Close() error
}
// ClientHandshakerOptions contains the options needed to configure the S2A
// handshaker service on the client-side.
type ClientHandshakerOptions struct {
// MinTLSVersion specifies the min TLS version supported by the client.
MinTLSVersion commonpb.TLSVersion
// MaxTLSVersion specifies the max TLS version supported by the client.
MaxTLSVersion commonpb.TLSVersion
// TLSCiphersuites is the ordered list of ciphersuites supported by the
// client.
TLSCiphersuites []commonpb.Ciphersuite
// TargetIdentities contains a list of allowed server identities. One of the
// target identities should match the peer identity in the handshake
// result; otherwise, the handshake fails.
TargetIdentities []*commonpb.Identity
// LocalIdentity is the local identity of the client application. If none is
// provided, then the S2A will choose the default identity.
LocalIdentity *commonpb.Identity
// TargetName is the allowed server name, which may be used for server
// authorization check by the S2A if it is provided.
TargetName string
// EnsureProcessSessionTickets allows users to wait and ensure that all
// available session tickets are sent to S2A before a process completes.
EnsureProcessSessionTickets *sync.WaitGroup
}
// ServerHandshakerOptions contains the options needed to configure the S2A
// handshaker service on the server-side.
type ServerHandshakerOptions struct {
// MinTLSVersion specifies the min TLS version supported by the server.
MinTLSVersion commonpb.TLSVersion
// MaxTLSVersion specifies the max TLS version supported by the server.
MaxTLSVersion commonpb.TLSVersion
// TLSCiphersuites is the ordered list of ciphersuites supported by the
// server.
TLSCiphersuites []commonpb.Ciphersuite
// LocalIdentities is the list of local identities that may be assumed by
// the server. If no local identity is specified, then the S2A chooses a
// default local identity.
LocalIdentities []*commonpb.Identity
}
// s2aHandshaker performs a TLS handshake using the S2A handshaker service.
type s2aHandshaker struct {
// stream is used to communicate with the S2A handshaker service.
stream s2apb.S2AService_SetUpSessionClient
// conn is the connection to the peer.
conn net.Conn
// clientOpts should be non-nil iff the handshaker is client-side.
clientOpts *ClientHandshakerOptions
// serverOpts should be non-nil iff the handshaker is server-side.
serverOpts *ServerHandshakerOptions
// isClient determines if the handshaker is client or server side.
isClient bool
// hsAddr stores the address of the S2A handshaker service.
hsAddr string
// tokenManager manages access tokens for authenticating to S2A.
tokenManager tokenmanager.AccessTokenManager
// localIdentities is the set of local identities for whom the
// tokenManager should fetch a token when preparing a request to be
// sent to S2A.
localIdentities []*commonpb.Identity
}
// NewClientHandshaker creates an s2aHandshaker instance that performs a
// client-side TLS handshake using the S2A handshaker service.
func NewClientHandshaker(ctx context.Context, conn *grpc.ClientConn, c net.Conn, hsAddr string, opts *ClientHandshakerOptions) (Handshaker, error) {
stream, err := s2apb.NewS2AServiceClient(conn).SetUpSession(ctx, grpc.WaitForReady(true))
if err != nil {
return nil, err
}
tokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
if err != nil {
grpclog.Infof("failed to create single token access token manager: %v", err)
}
return newClientHandshaker(stream, c, hsAddr, opts, tokenManager), nil
}
func newClientHandshaker(stream s2apb.S2AService_SetUpSessionClient, c net.Conn, hsAddr string, opts *ClientHandshakerOptions, tokenManager tokenmanager.AccessTokenManager) *s2aHandshaker {
var localIdentities []*commonpb.Identity
if opts != nil {
localIdentities = []*commonpb.Identity{opts.LocalIdentity}
}
return &s2aHandshaker{
stream: stream,
conn: c,
clientOpts: opts,
isClient: true,
hsAddr: hsAddr,
tokenManager: tokenManager,
localIdentities: localIdentities,
}
}
// NewServerHandshaker creates an s2aHandshaker instance that performs a
// server-side TLS handshake using the S2A handshaker service.
func NewServerHandshaker(ctx context.Context, conn *grpc.ClientConn, c net.Conn, hsAddr string, opts *ServerHandshakerOptions) (Handshaker, error) {
stream, err := s2apb.NewS2AServiceClient(conn).SetUpSession(ctx, grpc.WaitForReady(true))
if err != nil {
return nil, err
}
tokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
if err != nil {
grpclog.Infof("failed to create single token access token manager: %v", err)
}
return newServerHandshaker(stream, c, hsAddr, opts, tokenManager), nil
}
func newServerHandshaker(stream s2apb.S2AService_SetUpSessionClient, c net.Conn, hsAddr string, opts *ServerHandshakerOptions, tokenManager tokenmanager.AccessTokenManager) *s2aHandshaker {
var localIdentities []*commonpb.Identity
if opts != nil {
localIdentities = opts.LocalIdentities
}
return &s2aHandshaker{
stream: stream,
conn: c,
serverOpts: opts,
isClient: false,
hsAddr: hsAddr,
tokenManager: tokenManager,
localIdentities: localIdentities,
}
}
// ClientHandshake performs a client-side TLS handshake using the S2A handshaker
// service. When complete, returns a TLS connection.
func (h *s2aHandshaker) ClientHandshake(_ context.Context) (net.Conn, credentials.AuthInfo, error) {
if !h.isClient {
return nil, nil, errors.New("only handshakers created using NewClientHandshaker can perform a client-side handshake")
}
// Extract the hostname from the target name. The target name is assumed to be an authority.
hostname, _, err := net.SplitHostPort(h.clientOpts.TargetName)
if err != nil {
// If the target name had no host port or could not be parsed, use it as is.
hostname = h.clientOpts.TargetName
}
// Prepare a client start message to send to the S2A handshaker service.
req := &s2apb.SessionReq{
ReqOneof: &s2apb.SessionReq_ClientStart{
ClientStart: &s2apb.ClientSessionStartReq{
ApplicationProtocols: []string{appProtocol},
MinTlsVersion: h.clientOpts.MinTLSVersion,
MaxTlsVersion: h.clientOpts.MaxTLSVersion,
TlsCiphersuites: h.clientOpts.TLSCiphersuites,
TargetIdentities: h.clientOpts.TargetIdentities,
LocalIdentity: h.clientOpts.LocalIdentity,
TargetName: hostname,
},
},
AuthMechanisms: h.getAuthMechanisms(),
}
conn, result, err := h.setUpSession(req)
if err != nil {
return nil, nil, err
}
authInfo, err := authinfo.NewS2AAuthInfo(result)
if err != nil {
return nil, nil, err
}
return conn, authInfo, nil
}
// ServerHandshake performs a server-side TLS handshake using the S2A handshaker
// service. When complete, returns a TLS connection.
func (h *s2aHandshaker) ServerHandshake(_ context.Context) (net.Conn, credentials.AuthInfo, error) {
if h.isClient {
return nil, nil, errors.New("only handshakers created using NewServerHandshaker can perform a server-side handshake")
}
p := make([]byte, frameLimit)
n, err := h.conn.Read(p)
if err != nil {
return nil, nil, err
}
// Prepare a server start message to send to the S2A handshaker service.
req := &s2apb.SessionReq{
ReqOneof: &s2apb.SessionReq_ServerStart{
ServerStart: &s2apb.ServerSessionStartReq{
ApplicationProtocols: []string{appProtocol},
MinTlsVersion: h.serverOpts.MinTLSVersion,
MaxTlsVersion: h.serverOpts.MaxTLSVersion,
TlsCiphersuites: h.serverOpts.TLSCiphersuites,
LocalIdentities: h.serverOpts.LocalIdentities,
InBytes: p[:n],
},
},
AuthMechanisms: h.getAuthMechanisms(),
}
conn, result, err := h.setUpSession(req)
if err != nil {
return nil, nil, err
}
authInfo, err := authinfo.NewS2AAuthInfo(result)
if err != nil {
return nil, nil, err
}
return conn, authInfo, nil
}
// setUpSession proxies messages between the peer and the S2A handshaker
// service.
func (h *s2aHandshaker) setUpSession(req *s2apb.SessionReq) (net.Conn, *s2apb.SessionResult, error) {
resp, err := h.accessHandshakerService(req)
if err != nil {
return nil, nil, err
}
// Check if the returned status is an error.
if resp.GetStatus() != nil {
if got, want := resp.GetStatus().Code, uint32(codes.OK); got != want {
return nil, nil, fmt.Errorf("%v", resp.GetStatus().Details)
}
}
// Calculate the extra unread bytes from the Session. Attempting to consume
// more than the bytes sent will throw an error.
var extra []byte
if req.GetServerStart() != nil {
if resp.GetBytesConsumed() > uint32(len(req.GetServerStart().GetInBytes())) {
return nil, nil, errors.New("handshaker service consumed bytes value is out-of-bounds")
}
extra = req.GetServerStart().GetInBytes()[resp.GetBytesConsumed():]
}
result, extra, err := h.processUntilDone(resp, extra)
if err != nil {
return nil, nil, err
}
if result.GetLocalIdentity() == nil {
return nil, nil, errors.New("local identity must be populated in session result")
}
// Create a new TLS record protocol using the Session Result.
newConn, err := record.NewConn(&record.ConnParameters{
NetConn: h.conn,
Ciphersuite: result.GetState().GetTlsCiphersuite(),
TLSVersion: result.GetState().GetTlsVersion(),
InTrafficSecret: result.GetState().GetInKey(),
OutTrafficSecret: result.GetState().GetOutKey(),
UnusedBuf: extra,
InSequence: result.GetState().GetInSequence(),
OutSequence: result.GetState().GetOutSequence(),
HSAddr: h.hsAddr,
ConnectionID: result.GetState().GetConnectionId(),
LocalIdentity: result.GetLocalIdentity(),
EnsureProcessSessionTickets: h.ensureProcessSessionTickets(),
})
if err != nil {
return nil, nil, err
}
return newConn, result, nil
}
func (h *s2aHandshaker) ensureProcessSessionTickets() *sync.WaitGroup {
if h.clientOpts == nil {
return nil
}
return h.clientOpts.EnsureProcessSessionTickets
}
// accessHandshakerService sends the session request to the S2A handshaker
// service and returns the session response.
func (h *s2aHandshaker) accessHandshakerService(req *s2apb.SessionReq) (*s2apb.SessionResp, error) {
if err := h.stream.Send(req); err != nil {
return nil, err
}
resp, err := h.stream.Recv()
if err != nil {
return nil, err
}
return resp, nil
}
// processUntilDone continues proxying messages between the peer and the S2A
// handshaker service until the handshaker service returns the SessionResult at
// the end of the handshake or an error occurs.
func (h *s2aHandshaker) processUntilDone(resp *s2apb.SessionResp, unusedBytes []byte) (*s2apb.SessionResult, []byte, error) {
for {
if len(resp.OutFrames) > 0 {
if _, err := h.conn.Write(resp.OutFrames); err != nil {
return nil, nil, err
}
}
if resp.Result != nil {
return resp.Result, unusedBytes, nil
}
buf := make([]byte, frameLimit)
n, err := h.conn.Read(buf)
if err != nil && err != io.EOF {
return nil, nil, err
}
// If there is nothing to send to the handshaker service and nothing is
// received from the peer, then we are stuck. This covers the case when
// the peer is not responding. Note that handshaker service connection
// issues are caught in accessHandshakerService before we even get
// here.
if len(resp.OutFrames) == 0 && n == 0 {
return nil, nil, errPeerNotResponding
}
// Append extra bytes from the previous interaction with the handshaker
// service with the current buffer read from conn.
p := append(unusedBytes, buf[:n]...)
// From here on, p and unusedBytes point to the same slice.
resp, err = h.accessHandshakerService(&s2apb.SessionReq{
ReqOneof: &s2apb.SessionReq_Next{
Next: &s2apb.SessionNextReq{
InBytes: p,
},
},
AuthMechanisms: h.getAuthMechanisms(),
})
if err != nil {
return nil, nil, err
}
// Cache the local identity returned by S2A, if it is populated. This
// overwrites any existing local identities. This is done because, once the
// S2A has selected a local identity, then only that local identity should
// be asserted in future requests until the end of the current handshake.
if resp.GetLocalIdentity() != nil {
h.localIdentities = []*commonpb.Identity{resp.GetLocalIdentity()}
}
// Set unusedBytes based on the handshaker service response.
if resp.GetBytesConsumed() > uint32(len(p)) {
return nil, nil, errors.New("handshaker service consumed bytes value is out-of-bounds")
}
unusedBytes = p[resp.GetBytesConsumed():]
}
}
// Close shuts down the handshaker and the stream to the S2A handshaker service
// when the handshake is complete. It should be called when the caller obtains
// the secure connection at the end of the handshake.
func (h *s2aHandshaker) Close() error {
return h.stream.CloseSend()
}
func (h *s2aHandshaker) getAuthMechanisms() []*s2apb.AuthenticationMechanism {
if h.tokenManager == nil {
return nil
}
// First handle the special case when no local identities have been provided
// by the application. In this case, an AuthenticationMechanism with no local
// identity will be sent.
if len(h.localIdentities) == 0 {
token, err := h.tokenManager.DefaultToken()
if err != nil {
grpclog.Infof("unable to get token for empty local identity: %v", err)
return nil
}
return []*s2apb.AuthenticationMechanism{
{
MechanismOneof: &s2apb.AuthenticationMechanism_Token{
Token: token,
},
},
}
}
// Next, handle the case where the application (or the S2A) has provided
// one or more local identities.
var authMechanisms []*s2apb.AuthenticationMechanism
for _, localIdentity := range h.localIdentities {
token, err := h.tokenManager.Token(localIdentity)
if err != nil {
grpclog.Infof("unable to get token for local identity %v: %v", localIdentity, err)
continue
}
authMechanism := &s2apb.AuthenticationMechanism{
Identity: localIdentity,
MechanismOneof: &s2apb.AuthenticationMechanism_Token{
Token: token,
},
}
authMechanisms = append(authMechanisms, authMechanism)
}
return authMechanisms
}

92
vendor/github.com/google/s2a-go/internal/handshaker/service/service.go generated vendored Normal file
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@ -0,0 +1,92 @@
/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package service is a utility for calling the S2A handshaker service.
package service
import (
"context"
"flag"
"net"
"sync"
"time"
"google.golang.org/appengine"
"google.golang.org/appengine/socket"
grpc "google.golang.org/grpc"
"google.golang.org/grpc/grpclog"
)
var (
// enableAppEngineDialer indicates whether an AppEngine-specific dial option
// should be used.
enableAppEngineDialer bool
// appEngineDialerHook is an AppEngine-specific dial option that is set
// during init time. If nil, then the application is not running on Google
// AppEngine.
appEngineDialerHook func(context.Context) grpc.DialOption
// mu guards hsConnMap and hsDialer.
mu sync.Mutex
// hsConnMap represents a mapping from an S2A handshaker service address
// to a corresponding connection to an S2A handshaker service instance.
hsConnMap = make(map[string]*grpc.ClientConn)
// hsDialer will be reassigned in tests.
hsDialer = grpc.Dial
)
func init() {
flag.BoolVar(&enableAppEngineDialer, "s2a_enable_appengine_dialer", false, "If true, opportunistically use AppEngine-specific dialer to call S2A.")
if !appengine.IsAppEngine() && !appengine.IsDevAppServer() {
return
}
appEngineDialerHook = func(ctx context.Context) grpc.DialOption {
return grpc.WithDialer(func(addr string, timeout time.Duration) (net.Conn, error) {
return socket.DialTimeout(ctx, "tcp", addr, timeout)
})
}
}
// Dial dials the S2A handshaker service. If a connection has already been
// established, this function returns it. Otherwise, a new connection is
// created.
func Dial(handshakerServiceAddress string) (*grpc.ClientConn, error) {
mu.Lock()
defer mu.Unlock()
hsConn, ok := hsConnMap[handshakerServiceAddress]
if !ok {
// Create a new connection to the S2A handshaker service. Note that
// this connection stays open until the application is closed.
grpcOpts := []grpc.DialOption{
grpc.WithInsecure(),
}
if enableAppEngineDialer && appEngineDialerHook != nil {
if grpclog.V(1) {
grpclog.Info("Using AppEngine-specific dialer to talk to S2A.")
}
grpcOpts = append(grpcOpts, appEngineDialerHook(context.Background()))
}
var err error
hsConn, err = hsDialer(handshakerServiceAddress, grpcOpts...)
if err != nil {
return nil, err
}
hsConnMap[handshakerServiceAddress] = hsConn
}
return hsConn, nil
}

389
vendor/github.com/google/s2a-go/internal/proto/common_go_proto/common.pb.go generated vendored Normal file
View file

@ -0,0 +1,389 @@
// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.30.0
// protoc v3.21.12
// source: internal/proto/common/common.proto
package common_go_proto
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// The ciphersuites supported by S2A. The name determines the confidentiality,
// and authentication ciphers as well as the hash algorithm used for PRF in
// TLS 1.2 or HKDF in TLS 1.3. Thus, the components of the name are:
// - AEAD -- for encryption and authentication, e.g., AES_128_GCM.
// - Hash algorithm -- used in PRF or HKDF, e.g., SHA256.
type Ciphersuite int32
const (
Ciphersuite_AES_128_GCM_SHA256 Ciphersuite = 0
Ciphersuite_AES_256_GCM_SHA384 Ciphersuite = 1
Ciphersuite_CHACHA20_POLY1305_SHA256 Ciphersuite = 2
)
// Enum value maps for Ciphersuite.
var (
Ciphersuite_name = map[int32]string{
0: "AES_128_GCM_SHA256",
1: "AES_256_GCM_SHA384",
2: "CHACHA20_POLY1305_SHA256",
}
Ciphersuite_value = map[string]int32{
"AES_128_GCM_SHA256": 0,
"AES_256_GCM_SHA384": 1,
"CHACHA20_POLY1305_SHA256": 2,
}
)
func (x Ciphersuite) Enum() *Ciphersuite {
p := new(Ciphersuite)
*p = x
return p
}
func (x Ciphersuite) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Ciphersuite) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_common_common_proto_enumTypes[0].Descriptor()
}
func (Ciphersuite) Type() protoreflect.EnumType {
return &file_internal_proto_common_common_proto_enumTypes[0]
}
func (x Ciphersuite) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Ciphersuite.Descriptor instead.
func (Ciphersuite) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_common_common_proto_rawDescGZIP(), []int{0}
}
// The TLS versions supported by S2A's handshaker module.
type TLSVersion int32
const (
TLSVersion_TLS1_2 TLSVersion = 0
TLSVersion_TLS1_3 TLSVersion = 1
)
// Enum value maps for TLSVersion.
var (
TLSVersion_name = map[int32]string{
0: "TLS1_2",
1: "TLS1_3",
}
TLSVersion_value = map[string]int32{
"TLS1_2": 0,
"TLS1_3": 1,
}
)
func (x TLSVersion) Enum() *TLSVersion {
p := new(TLSVersion)
*p = x
return p
}
func (x TLSVersion) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (TLSVersion) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_common_common_proto_enumTypes[1].Descriptor()
}
func (TLSVersion) Type() protoreflect.EnumType {
return &file_internal_proto_common_common_proto_enumTypes[1]
}
func (x TLSVersion) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use TLSVersion.Descriptor instead.
func (TLSVersion) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_common_common_proto_rawDescGZIP(), []int{1}
}
type Identity struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Types that are assignable to IdentityOneof:
//
// *Identity_SpiffeId
// *Identity_Hostname
// *Identity_Uid
// *Identity_MdbUsername
// *Identity_GaiaId
IdentityOneof isIdentity_IdentityOneof `protobuf_oneof:"identity_oneof"`
// Additional identity-specific attributes.
Attributes map[string]string `protobuf:"bytes,3,rep,name=attributes,proto3" json:"attributes,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
}
func (x *Identity) Reset() {
*x = Identity{}
if protoimpl.UnsafeEnabled {
mi := &file_internal_proto_common_common_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Identity) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Identity) ProtoMessage() {}
func (x *Identity) ProtoReflect() protoreflect.Message {
mi := &file_internal_proto_common_common_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Identity.ProtoReflect.Descriptor instead.
func (*Identity) Descriptor() ([]byte, []int) {
return file_internal_proto_common_common_proto_rawDescGZIP(), []int{0}
}
func (m *Identity) GetIdentityOneof() isIdentity_IdentityOneof {
if m != nil {
return m.IdentityOneof
}
return nil
}
func (x *Identity) GetSpiffeId() string {
if x, ok := x.GetIdentityOneof().(*Identity_SpiffeId); ok {
return x.SpiffeId
}
return ""
}
func (x *Identity) GetHostname() string {
if x, ok := x.GetIdentityOneof().(*Identity_Hostname); ok {
return x.Hostname
}
return ""
}
func (x *Identity) GetUid() string {
if x, ok := x.GetIdentityOneof().(*Identity_Uid); ok {
return x.Uid
}
return ""
}
func (x *Identity) GetMdbUsername() string {
if x, ok := x.GetIdentityOneof().(*Identity_MdbUsername); ok {
return x.MdbUsername
}
return ""
}
func (x *Identity) GetGaiaId() string {
if x, ok := x.GetIdentityOneof().(*Identity_GaiaId); ok {
return x.GaiaId
}
return ""
}
func (x *Identity) GetAttributes() map[string]string {
if x != nil {
return x.Attributes
}
return nil
}
type isIdentity_IdentityOneof interface {
isIdentity_IdentityOneof()
}
type Identity_SpiffeId struct {
// The SPIFFE ID of a connection endpoint.
SpiffeId string `protobuf:"bytes,1,opt,name=spiffe_id,json=spiffeId,proto3,oneof"`
}
type Identity_Hostname struct {
// The hostname of a connection endpoint.
Hostname string `protobuf:"bytes,2,opt,name=hostname,proto3,oneof"`
}
type Identity_Uid struct {
// The UID of a connection endpoint.
Uid string `protobuf:"bytes,4,opt,name=uid,proto3,oneof"`
}
type Identity_MdbUsername struct {
// The MDB username of a connection endpoint.
MdbUsername string `protobuf:"bytes,5,opt,name=mdb_username,json=mdbUsername,proto3,oneof"`
}
type Identity_GaiaId struct {
// The Gaia ID of a connection endpoint.
GaiaId string `protobuf:"bytes,6,opt,name=gaia_id,json=gaiaId,proto3,oneof"`
}
func (*Identity_SpiffeId) isIdentity_IdentityOneof() {}
func (*Identity_Hostname) isIdentity_IdentityOneof() {}
func (*Identity_Uid) isIdentity_IdentityOneof() {}
func (*Identity_MdbUsername) isIdentity_IdentityOneof() {}
func (*Identity_GaiaId) isIdentity_IdentityOneof() {}
var File_internal_proto_common_common_proto protoreflect.FileDescriptor
var file_internal_proto_common_common_proto_rawDesc = []byte{
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}
var (
file_internal_proto_common_common_proto_rawDescOnce sync.Once
file_internal_proto_common_common_proto_rawDescData = file_internal_proto_common_common_proto_rawDesc
)
func file_internal_proto_common_common_proto_rawDescGZIP() []byte {
file_internal_proto_common_common_proto_rawDescOnce.Do(func() {
file_internal_proto_common_common_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_proto_common_common_proto_rawDescData)
})
return file_internal_proto_common_common_proto_rawDescData
}
var file_internal_proto_common_common_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
var file_internal_proto_common_common_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_internal_proto_common_common_proto_goTypes = []interface{}{
(Ciphersuite)(0), // 0: s2a.proto.Ciphersuite
(TLSVersion)(0), // 1: s2a.proto.TLSVersion
(*Identity)(nil), // 2: s2a.proto.Identity
nil, // 3: s2a.proto.Identity.AttributesEntry
}
var file_internal_proto_common_common_proto_depIdxs = []int32{
3, // 0: s2a.proto.Identity.attributes:type_name -> s2a.proto.Identity.AttributesEntry
1, // [1:1] is the sub-list for method output_type
1, // [1:1] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_internal_proto_common_common_proto_init() }
func file_internal_proto_common_common_proto_init() {
if File_internal_proto_common_common_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_internal_proto_common_common_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Identity); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
file_internal_proto_common_common_proto_msgTypes[0].OneofWrappers = []interface{}{
(*Identity_SpiffeId)(nil),
(*Identity_Hostname)(nil),
(*Identity_Uid)(nil),
(*Identity_MdbUsername)(nil),
(*Identity_GaiaId)(nil),
}
type x struct{}
out := protoimpl.TypeBuilder{
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GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_internal_proto_common_common_proto_rawDesc,
NumEnums: 2,
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GoTypes: file_internal_proto_common_common_proto_goTypes,
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EnumInfos: file_internal_proto_common_common_proto_enumTypes,
MessageInfos: file_internal_proto_common_common_proto_msgTypes,
}.Build()
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file_internal_proto_common_common_proto_rawDesc = nil
file_internal_proto_common_common_proto_goTypes = nil
file_internal_proto_common_common_proto_depIdxs = nil
}

267
vendor/github.com/google/s2a-go/internal/proto/s2a_context_go_proto/s2a_context.pb.go generated vendored Normal file
View file

@ -0,0 +1,267 @@
// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.30.0
// protoc v3.21.12
// source: internal/proto/s2a_context/s2a_context.proto
package s2a_context_go_proto
import (
common_go_proto "github.com/google/s2a-go/internal/proto/common_go_proto"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type S2AContext struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// The application protocol negotiated for this connection, e.g., 'grpc'.
ApplicationProtocol string `protobuf:"bytes,1,opt,name=application_protocol,json=applicationProtocol,proto3" json:"application_protocol,omitempty"`
// The TLS version number that the S2A's handshaker module used to set up the
// session.
TlsVersion common_go_proto.TLSVersion `protobuf:"varint,2,opt,name=tls_version,json=tlsVersion,proto3,enum=s2a.proto.TLSVersion" json:"tls_version,omitempty"`
// The TLS ciphersuite negotiated by the S2A's handshaker module.
Ciphersuite common_go_proto.Ciphersuite `protobuf:"varint,3,opt,name=ciphersuite,proto3,enum=s2a.proto.Ciphersuite" json:"ciphersuite,omitempty"`
// The authenticated identity of the peer.
PeerIdentity *common_go_proto.Identity `protobuf:"bytes,4,opt,name=peer_identity,json=peerIdentity,proto3" json:"peer_identity,omitempty"`
// The local identity used during session setup. This could be:
// - The local identity that the client specifies in ClientSessionStartReq.
// - One of the local identities that the server specifies in
// ServerSessionStartReq.
// - If neither client or server specifies local identities, the S2A picks the
// default one. In this case, this field will contain that identity.
LocalIdentity *common_go_proto.Identity `protobuf:"bytes,5,opt,name=local_identity,json=localIdentity,proto3" json:"local_identity,omitempty"`
// The SHA256 hash of the peer certificate used in the handshake.
PeerCertFingerprint []byte `protobuf:"bytes,6,opt,name=peer_cert_fingerprint,json=peerCertFingerprint,proto3" json:"peer_cert_fingerprint,omitempty"`
// The SHA256 hash of the local certificate used in the handshake.
LocalCertFingerprint []byte `protobuf:"bytes,7,opt,name=local_cert_fingerprint,json=localCertFingerprint,proto3" json:"local_cert_fingerprint,omitempty"`
// Set to true if a cached session was reused to resume the handshake.
IsHandshakeResumed bool `protobuf:"varint,8,opt,name=is_handshake_resumed,json=isHandshakeResumed,proto3" json:"is_handshake_resumed,omitempty"`
}
func (x *S2AContext) Reset() {
*x = S2AContext{}
if protoimpl.UnsafeEnabled {
mi := &file_internal_proto_s2a_context_s2a_context_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *S2AContext) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*S2AContext) ProtoMessage() {}
func (x *S2AContext) ProtoReflect() protoreflect.Message {
mi := &file_internal_proto_s2a_context_s2a_context_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use S2AContext.ProtoReflect.Descriptor instead.
func (*S2AContext) Descriptor() ([]byte, []int) {
return file_internal_proto_s2a_context_s2a_context_proto_rawDescGZIP(), []int{0}
}
func (x *S2AContext) GetApplicationProtocol() string {
if x != nil {
return x.ApplicationProtocol
}
return ""
}
func (x *S2AContext) GetTlsVersion() common_go_proto.TLSVersion {
if x != nil {
return x.TlsVersion
}
return common_go_proto.TLSVersion(0)
}
func (x *S2AContext) GetCiphersuite() common_go_proto.Ciphersuite {
if x != nil {
return x.Ciphersuite
}
return common_go_proto.Ciphersuite(0)
}
func (x *S2AContext) GetPeerIdentity() *common_go_proto.Identity {
if x != nil {
return x.PeerIdentity
}
return nil
}
func (x *S2AContext) GetLocalIdentity() *common_go_proto.Identity {
if x != nil {
return x.LocalIdentity
}
return nil
}
func (x *S2AContext) GetPeerCertFingerprint() []byte {
if x != nil {
return x.PeerCertFingerprint
}
return nil
}
func (x *S2AContext) GetLocalCertFingerprint() []byte {
if x != nil {
return x.LocalCertFingerprint
}
return nil
}
func (x *S2AContext) GetIsHandshakeResumed() bool {
if x != nil {
return x.IsHandshakeResumed
}
return false
}
var File_internal_proto_s2a_context_s2a_context_proto protoreflect.FileDescriptor
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}
var (
file_internal_proto_s2a_context_s2a_context_proto_rawDescOnce sync.Once
file_internal_proto_s2a_context_s2a_context_proto_rawDescData = file_internal_proto_s2a_context_s2a_context_proto_rawDesc
)
func file_internal_proto_s2a_context_s2a_context_proto_rawDescGZIP() []byte {
file_internal_proto_s2a_context_s2a_context_proto_rawDescOnce.Do(func() {
file_internal_proto_s2a_context_s2a_context_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_proto_s2a_context_s2a_context_proto_rawDescData)
})
return file_internal_proto_s2a_context_s2a_context_proto_rawDescData
}
var file_internal_proto_s2a_context_s2a_context_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_internal_proto_s2a_context_s2a_context_proto_goTypes = []interface{}{
(*S2AContext)(nil), // 0: s2a.proto.S2AContext
(common_go_proto.TLSVersion)(0), // 1: s2a.proto.TLSVersion
(common_go_proto.Ciphersuite)(0), // 2: s2a.proto.Ciphersuite
(*common_go_proto.Identity)(nil), // 3: s2a.proto.Identity
}
var file_internal_proto_s2a_context_s2a_context_proto_depIdxs = []int32{
1, // 0: s2a.proto.S2AContext.tls_version:type_name -> s2a.proto.TLSVersion
2, // 1: s2a.proto.S2AContext.ciphersuite:type_name -> s2a.proto.Ciphersuite
3, // 2: s2a.proto.S2AContext.peer_identity:type_name -> s2a.proto.Identity
3, // 3: s2a.proto.S2AContext.local_identity:type_name -> s2a.proto.Identity
4, // [4:4] is the sub-list for method output_type
4, // [4:4] is the sub-list for method input_type
4, // [4:4] is the sub-list for extension type_name
4, // [4:4] is the sub-list for extension extendee
0, // [0:4] is the sub-list for field type_name
}
func init() { file_internal_proto_s2a_context_s2a_context_proto_init() }
func file_internal_proto_s2a_context_s2a_context_proto_init() {
if File_internal_proto_s2a_context_s2a_context_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_internal_proto_s2a_context_s2a_context_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*S2AContext); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_internal_proto_s2a_context_s2a_context_proto_rawDesc,
NumEnums: 0,
NumMessages: 1,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_internal_proto_s2a_context_s2a_context_proto_goTypes,
DependencyIndexes: file_internal_proto_s2a_context_s2a_context_proto_depIdxs,
MessageInfos: file_internal_proto_s2a_context_s2a_context_proto_msgTypes,
}.Build()
File_internal_proto_s2a_context_s2a_context_proto = out.File
file_internal_proto_s2a_context_s2a_context_proto_rawDesc = nil
file_internal_proto_s2a_context_s2a_context_proto_goTypes = nil
file_internal_proto_s2a_context_s2a_context_proto_depIdxs = nil
}

1377
vendor/github.com/google/s2a-go/internal/proto/s2a_go_proto/s2a.pb.go generated vendored Normal file
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File diff suppressed because it is too large Load diff

173
vendor/github.com/google/s2a-go/internal/proto/s2a_go_proto/s2a_grpc.pb.go generated vendored Normal file
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@ -0,0 +1,173 @@
// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.3.0
// - protoc v3.21.12
// source: internal/proto/s2a/s2a.proto
package s2a_go_proto
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.32.0 or later.
const _ = grpc.SupportPackageIsVersion7
const (
S2AService_SetUpSession_FullMethodName = "/s2a.proto.S2AService/SetUpSession"
)
// S2AServiceClient is the client API for S2AService service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type S2AServiceClient interface {
// S2A service accepts a stream of session setup requests and returns a stream
// of session setup responses. The client of this service is expected to send
// exactly one client_start or server_start message followed by at least one
// next message. Applications running TLS clients can send requests with
// resumption_ticket messages only after the session is successfully set up.
//
// Every time S2A client sends a request, this service sends a response.
// However, clients do not have to wait for service response before sending
// the next request.
SetUpSession(ctx context.Context, opts ...grpc.CallOption) (S2AService_SetUpSessionClient, error)
}
type s2AServiceClient struct {
cc grpc.ClientConnInterface
}
func NewS2AServiceClient(cc grpc.ClientConnInterface) S2AServiceClient {
return &s2AServiceClient{cc}
}
func (c *s2AServiceClient) SetUpSession(ctx context.Context, opts ...grpc.CallOption) (S2AService_SetUpSessionClient, error) {
stream, err := c.cc.NewStream(ctx, &S2AService_ServiceDesc.Streams[0], S2AService_SetUpSession_FullMethodName, opts...)
if err != nil {
return nil, err
}
x := &s2AServiceSetUpSessionClient{stream}
return x, nil
}
type S2AService_SetUpSessionClient interface {
Send(*SessionReq) error
Recv() (*SessionResp, error)
grpc.ClientStream
}
type s2AServiceSetUpSessionClient struct {
grpc.ClientStream
}
func (x *s2AServiceSetUpSessionClient) Send(m *SessionReq) error {
return x.ClientStream.SendMsg(m)
}
func (x *s2AServiceSetUpSessionClient) Recv() (*SessionResp, error) {
m := new(SessionResp)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// S2AServiceServer is the server API for S2AService service.
// All implementations must embed UnimplementedS2AServiceServer
// for forward compatibility
type S2AServiceServer interface {
// S2A service accepts a stream of session setup requests and returns a stream
// of session setup responses. The client of this service is expected to send
// exactly one client_start or server_start message followed by at least one
// next message. Applications running TLS clients can send requests with
// resumption_ticket messages only after the session is successfully set up.
//
// Every time S2A client sends a request, this service sends a response.
// However, clients do not have to wait for service response before sending
// the next request.
SetUpSession(S2AService_SetUpSessionServer) error
mustEmbedUnimplementedS2AServiceServer()
}
// UnimplementedS2AServiceServer must be embedded to have forward compatible implementations.
type UnimplementedS2AServiceServer struct {
}
func (UnimplementedS2AServiceServer) SetUpSession(S2AService_SetUpSessionServer) error {
return status.Errorf(codes.Unimplemented, "method SetUpSession not implemented")
}
func (UnimplementedS2AServiceServer) mustEmbedUnimplementedS2AServiceServer() {}
// UnsafeS2AServiceServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to S2AServiceServer will
// result in compilation errors.
type UnsafeS2AServiceServer interface {
mustEmbedUnimplementedS2AServiceServer()
}
func RegisterS2AServiceServer(s grpc.ServiceRegistrar, srv S2AServiceServer) {
s.RegisterService(&S2AService_ServiceDesc, srv)
}
func _S2AService_SetUpSession_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(S2AServiceServer).SetUpSession(&s2AServiceSetUpSessionServer{stream})
}
type S2AService_SetUpSessionServer interface {
Send(*SessionResp) error
Recv() (*SessionReq, error)
grpc.ServerStream
}
type s2AServiceSetUpSessionServer struct {
grpc.ServerStream
}
func (x *s2AServiceSetUpSessionServer) Send(m *SessionResp) error {
return x.ServerStream.SendMsg(m)
}
func (x *s2AServiceSetUpSessionServer) Recv() (*SessionReq, error) {
m := new(SessionReq)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// S2AService_ServiceDesc is the grpc.ServiceDesc for S2AService service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var S2AService_ServiceDesc = grpc.ServiceDesc{
ServiceName: "s2a.proto.S2AService",
HandlerType: (*S2AServiceServer)(nil),
Methods: []grpc.MethodDesc{},
Streams: []grpc.StreamDesc{
{
StreamName: "SetUpSession",
Handler: _S2AService_SetUpSession_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "internal/proto/s2a/s2a.proto",
}

367
vendor/github.com/google/s2a-go/internal/proto/v2/common_go_proto/common.pb.go generated vendored Normal file
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@ -0,0 +1,367 @@
// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.30.0
// protoc v3.21.12
// source: internal/proto/v2/common/common.proto
package common_go_proto
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// The TLS 1.0-1.2 ciphersuites that the application can negotiate when using
// S2A.
type Ciphersuite int32
const (
Ciphersuite_CIPHERSUITE_UNSPECIFIED Ciphersuite = 0
Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 Ciphersuite = 1
Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 Ciphersuite = 2
Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 Ciphersuite = 3
Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Ciphersuite = 4
Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Ciphersuite = 5
Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 Ciphersuite = 6
)
// Enum value maps for Ciphersuite.
var (
Ciphersuite_name = map[int32]string{
0: "CIPHERSUITE_UNSPECIFIED",
1: "CIPHERSUITE_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
2: "CIPHERSUITE_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
3: "CIPHERSUITE_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256",
4: "CIPHERSUITE_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
5: "CIPHERSUITE_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
6: "CIPHERSUITE_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256",
}
Ciphersuite_value = map[string]int32{
"CIPHERSUITE_UNSPECIFIED": 0,
"CIPHERSUITE_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": 1,
"CIPHERSUITE_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384": 2,
"CIPHERSUITE_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256": 3,
"CIPHERSUITE_ECDHE_RSA_WITH_AES_128_GCM_SHA256": 4,
"CIPHERSUITE_ECDHE_RSA_WITH_AES_256_GCM_SHA384": 5,
"CIPHERSUITE_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256": 6,
}
)
func (x Ciphersuite) Enum() *Ciphersuite {
p := new(Ciphersuite)
*p = x
return p
}
func (x Ciphersuite) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Ciphersuite) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_v2_common_common_proto_enumTypes[0].Descriptor()
}
func (Ciphersuite) Type() protoreflect.EnumType {
return &file_internal_proto_v2_common_common_proto_enumTypes[0]
}
func (x Ciphersuite) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Ciphersuite.Descriptor instead.
func (Ciphersuite) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_v2_common_common_proto_rawDescGZIP(), []int{0}
}
// The TLS versions supported by S2A's handshaker module.
type TLSVersion int32
const (
TLSVersion_TLS_VERSION_UNSPECIFIED TLSVersion = 0
TLSVersion_TLS_VERSION_1_0 TLSVersion = 1
TLSVersion_TLS_VERSION_1_1 TLSVersion = 2
TLSVersion_TLS_VERSION_1_2 TLSVersion = 3
TLSVersion_TLS_VERSION_1_3 TLSVersion = 4
)
// Enum value maps for TLSVersion.
var (
TLSVersion_name = map[int32]string{
0: "TLS_VERSION_UNSPECIFIED",
1: "TLS_VERSION_1_0",
2: "TLS_VERSION_1_1",
3: "TLS_VERSION_1_2",
4: "TLS_VERSION_1_3",
}
TLSVersion_value = map[string]int32{
"TLS_VERSION_UNSPECIFIED": 0,
"TLS_VERSION_1_0": 1,
"TLS_VERSION_1_1": 2,
"TLS_VERSION_1_2": 3,
"TLS_VERSION_1_3": 4,
}
)
func (x TLSVersion) Enum() *TLSVersion {
p := new(TLSVersion)
*p = x
return p
}
func (x TLSVersion) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (TLSVersion) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_v2_common_common_proto_enumTypes[1].Descriptor()
}
func (TLSVersion) Type() protoreflect.EnumType {
return &file_internal_proto_v2_common_common_proto_enumTypes[1]
}
func (x TLSVersion) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use TLSVersion.Descriptor instead.
func (TLSVersion) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_v2_common_common_proto_rawDescGZIP(), []int{1}
}
// The side in the TLS connection.
type ConnectionSide int32
const (
ConnectionSide_CONNECTION_SIDE_UNSPECIFIED ConnectionSide = 0
ConnectionSide_CONNECTION_SIDE_CLIENT ConnectionSide = 1
ConnectionSide_CONNECTION_SIDE_SERVER ConnectionSide = 2
)
// Enum value maps for ConnectionSide.
var (
ConnectionSide_name = map[int32]string{
0: "CONNECTION_SIDE_UNSPECIFIED",
1: "CONNECTION_SIDE_CLIENT",
2: "CONNECTION_SIDE_SERVER",
}
ConnectionSide_value = map[string]int32{
"CONNECTION_SIDE_UNSPECIFIED": 0,
"CONNECTION_SIDE_CLIENT": 1,
"CONNECTION_SIDE_SERVER": 2,
}
)
func (x ConnectionSide) Enum() *ConnectionSide {
p := new(ConnectionSide)
*p = x
return p
}
func (x ConnectionSide) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (ConnectionSide) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_v2_common_common_proto_enumTypes[2].Descriptor()
}
func (ConnectionSide) Type() protoreflect.EnumType {
return &file_internal_proto_v2_common_common_proto_enumTypes[2]
}
func (x ConnectionSide) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use ConnectionSide.Descriptor instead.
func (ConnectionSide) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_v2_common_common_proto_rawDescGZIP(), []int{2}
}
// The ALPN protocols that the application can negotiate during a TLS handshake.
type AlpnProtocol int32
const (
AlpnProtocol_ALPN_PROTOCOL_UNSPECIFIED AlpnProtocol = 0
AlpnProtocol_ALPN_PROTOCOL_GRPC AlpnProtocol = 1
AlpnProtocol_ALPN_PROTOCOL_HTTP2 AlpnProtocol = 2
AlpnProtocol_ALPN_PROTOCOL_HTTP1_1 AlpnProtocol = 3
)
// Enum value maps for AlpnProtocol.
var (
AlpnProtocol_name = map[int32]string{
0: "ALPN_PROTOCOL_UNSPECIFIED",
1: "ALPN_PROTOCOL_GRPC",
2: "ALPN_PROTOCOL_HTTP2",
3: "ALPN_PROTOCOL_HTTP1_1",
}
AlpnProtocol_value = map[string]int32{
"ALPN_PROTOCOL_UNSPECIFIED": 0,
"ALPN_PROTOCOL_GRPC": 1,
"ALPN_PROTOCOL_HTTP2": 2,
"ALPN_PROTOCOL_HTTP1_1": 3,
}
)
func (x AlpnProtocol) Enum() *AlpnProtocol {
p := new(AlpnProtocol)
*p = x
return p
}
func (x AlpnProtocol) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (AlpnProtocol) Descriptor() protoreflect.EnumDescriptor {
return file_internal_proto_v2_common_common_proto_enumTypes[3].Descriptor()
}
func (AlpnProtocol) Type() protoreflect.EnumType {
return &file_internal_proto_v2_common_common_proto_enumTypes[3]
}
func (x AlpnProtocol) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use AlpnProtocol.Descriptor instead.
func (AlpnProtocol) EnumDescriptor() ([]byte, []int) {
return file_internal_proto_v2_common_common_proto_rawDescGZIP(), []int{3}
}
var File_internal_proto_v2_common_common_proto protoreflect.FileDescriptor
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}
var (
file_internal_proto_v2_common_common_proto_rawDescOnce sync.Once
file_internal_proto_v2_common_common_proto_rawDescData = file_internal_proto_v2_common_common_proto_rawDesc
)
func file_internal_proto_v2_common_common_proto_rawDescGZIP() []byte {
file_internal_proto_v2_common_common_proto_rawDescOnce.Do(func() {
file_internal_proto_v2_common_common_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_proto_v2_common_common_proto_rawDescData)
})
return file_internal_proto_v2_common_common_proto_rawDescData
}
var file_internal_proto_v2_common_common_proto_enumTypes = make([]protoimpl.EnumInfo, 4)
var file_internal_proto_v2_common_common_proto_goTypes = []interface{}{
(Ciphersuite)(0), // 0: s2a.proto.v2.Ciphersuite
(TLSVersion)(0), // 1: s2a.proto.v2.TLSVersion
(ConnectionSide)(0), // 2: s2a.proto.v2.ConnectionSide
(AlpnProtocol)(0), // 3: s2a.proto.v2.AlpnProtocol
}
var file_internal_proto_v2_common_common_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_internal_proto_v2_common_common_proto_init() }
func file_internal_proto_v2_common_common_proto_init() {
if File_internal_proto_v2_common_common_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_internal_proto_v2_common_common_proto_rawDesc,
NumEnums: 4,
NumMessages: 0,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_internal_proto_v2_common_common_proto_goTypes,
DependencyIndexes: file_internal_proto_v2_common_common_proto_depIdxs,
EnumInfos: file_internal_proto_v2_common_common_proto_enumTypes,
}.Build()
File_internal_proto_v2_common_common_proto = out.File
file_internal_proto_v2_common_common_proto_rawDesc = nil
file_internal_proto_v2_common_common_proto_goTypes = nil
file_internal_proto_v2_common_common_proto_depIdxs = nil
}

248
vendor/github.com/google/s2a-go/internal/proto/v2/s2a_context_go_proto/s2a_context.pb.go generated vendored Normal file
View file

@ -0,0 +1,248 @@
// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.30.0
// protoc v3.21.12
// source: internal/proto/v2/s2a_context/s2a_context.proto
package s2a_context_go_proto
import (
common_go_proto "github.com/google/s2a-go/internal/proto/common_go_proto"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type S2AContext struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// The SPIFFE ID from the peer leaf certificate, if present.
//
// This field is only populated if the leaf certificate is a valid SPIFFE
// SVID; in particular, there is a unique URI SAN and this URI SAN is a valid
// SPIFFE ID.
LeafCertSpiffeId string `protobuf:"bytes,1,opt,name=leaf_cert_spiffe_id,json=leafCertSpiffeId,proto3" json:"leaf_cert_spiffe_id,omitempty"`
// The URIs that are present in the SubjectAltName extension of the peer leaf
// certificate.
//
// Note that the extracted URIs are not validated and may not be properly
// formatted.
LeafCertUris []string `protobuf:"bytes,2,rep,name=leaf_cert_uris,json=leafCertUris,proto3" json:"leaf_cert_uris,omitempty"`
// The DNSNames that are present in the SubjectAltName extension of the peer
// leaf certificate.
LeafCertDnsnames []string `protobuf:"bytes,3,rep,name=leaf_cert_dnsnames,json=leafCertDnsnames,proto3" json:"leaf_cert_dnsnames,omitempty"`
// The (ordered) list of fingerprints in the certificate chain used to verify
// the given leaf certificate. The order MUST be from leaf certificate
// fingerprint to root certificate fingerprint.
//
// A fingerprint is the base-64 encoding of the SHA256 hash of the
// DER-encoding of a certificate. The list MAY be populated even if the peer
// certificate chain was NOT validated successfully.
PeerCertificateChainFingerprints []string `protobuf:"bytes,4,rep,name=peer_certificate_chain_fingerprints,json=peerCertificateChainFingerprints,proto3" json:"peer_certificate_chain_fingerprints,omitempty"`
// The local identity used during session setup.
LocalIdentity *common_go_proto.Identity `protobuf:"bytes,5,opt,name=local_identity,json=localIdentity,proto3" json:"local_identity,omitempty"`
// The SHA256 hash of the DER-encoding of the local leaf certificate used in
// the handshake.
LocalLeafCertFingerprint []byte `protobuf:"bytes,6,opt,name=local_leaf_cert_fingerprint,json=localLeafCertFingerprint,proto3" json:"local_leaf_cert_fingerprint,omitempty"`
}
func (x *S2AContext) Reset() {
*x = S2AContext{}
if protoimpl.UnsafeEnabled {
mi := &file_internal_proto_v2_s2a_context_s2a_context_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *S2AContext) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*S2AContext) ProtoMessage() {}
func (x *S2AContext) ProtoReflect() protoreflect.Message {
mi := &file_internal_proto_v2_s2a_context_s2a_context_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use S2AContext.ProtoReflect.Descriptor instead.
func (*S2AContext) Descriptor() ([]byte, []int) {
return file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescGZIP(), []int{0}
}
func (x *S2AContext) GetLeafCertSpiffeId() string {
if x != nil {
return x.LeafCertSpiffeId
}
return ""
}
func (x *S2AContext) GetLeafCertUris() []string {
if x != nil {
return x.LeafCertUris
}
return nil
}
func (x *S2AContext) GetLeafCertDnsnames() []string {
if x != nil {
return x.LeafCertDnsnames
}
return nil
}
func (x *S2AContext) GetPeerCertificateChainFingerprints() []string {
if x != nil {
return x.PeerCertificateChainFingerprints
}
return nil
}
func (x *S2AContext) GetLocalIdentity() *common_go_proto.Identity {
if x != nil {
return x.LocalIdentity
}
return nil
}
func (x *S2AContext) GetLocalLeafCertFingerprint() []byte {
if x != nil {
return x.LocalLeafCertFingerprint
}
return nil
}
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var (
file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescOnce sync.Once
file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescData = file_internal_proto_v2_s2a_context_s2a_context_proto_rawDesc
)
func file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescGZIP() []byte {
file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescOnce.Do(func() {
file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescData)
})
return file_internal_proto_v2_s2a_context_s2a_context_proto_rawDescData
}
var file_internal_proto_v2_s2a_context_s2a_context_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_internal_proto_v2_s2a_context_s2a_context_proto_goTypes = []interface{}{
(*S2AContext)(nil), // 0: s2a.proto.v2.S2AContext
(*common_go_proto.Identity)(nil), // 1: s2a.proto.Identity
}
var file_internal_proto_v2_s2a_context_s2a_context_proto_depIdxs = []int32{
1, // 0: s2a.proto.v2.S2AContext.local_identity:type_name -> s2a.proto.Identity
1, // [1:1] is the sub-list for method output_type
1, // [1:1] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_internal_proto_v2_s2a_context_s2a_context_proto_init() }
func file_internal_proto_v2_s2a_context_s2a_context_proto_init() {
if File_internal_proto_v2_s2a_context_s2a_context_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_internal_proto_v2_s2a_context_s2a_context_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*S2AContext); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_internal_proto_v2_s2a_context_s2a_context_proto_rawDesc,
NumEnums: 0,
NumMessages: 1,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_internal_proto_v2_s2a_context_s2a_context_proto_goTypes,
DependencyIndexes: file_internal_proto_v2_s2a_context_s2a_context_proto_depIdxs,
MessageInfos: file_internal_proto_v2_s2a_context_s2a_context_proto_msgTypes,
}.Build()
File_internal_proto_v2_s2a_context_s2a_context_proto = out.File
file_internal_proto_v2_s2a_context_s2a_context_proto_rawDesc = nil
file_internal_proto_v2_s2a_context_s2a_context_proto_goTypes = nil
file_internal_proto_v2_s2a_context_s2a_context_proto_depIdxs = nil
}

2480
vendor/github.com/google/s2a-go/internal/proto/v2/s2a_go_proto/s2a.pb.go generated vendored Normal file
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File diff suppressed because it is too large Load diff

159
vendor/github.com/google/s2a-go/internal/proto/v2/s2a_go_proto/s2a_grpc.pb.go generated vendored Normal file
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@ -0,0 +1,159 @@
// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.3.0
// - protoc v3.21.12
// source: internal/proto/v2/s2a/s2a.proto
package s2a_go_proto
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.32.0 or later.
const _ = grpc.SupportPackageIsVersion7
const (
S2AService_SetUpSession_FullMethodName = "/s2a.proto.v2.S2AService/SetUpSession"
)
// S2AServiceClient is the client API for S2AService service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type S2AServiceClient interface {
// SetUpSession is a bidirectional stream used by applications to offload
// operations from the TLS handshake.
SetUpSession(ctx context.Context, opts ...grpc.CallOption) (S2AService_SetUpSessionClient, error)
}
type s2AServiceClient struct {
cc grpc.ClientConnInterface
}
func NewS2AServiceClient(cc grpc.ClientConnInterface) S2AServiceClient {
return &s2AServiceClient{cc}
}
func (c *s2AServiceClient) SetUpSession(ctx context.Context, opts ...grpc.CallOption) (S2AService_SetUpSessionClient, error) {
stream, err := c.cc.NewStream(ctx, &S2AService_ServiceDesc.Streams[0], S2AService_SetUpSession_FullMethodName, opts...)
if err != nil {
return nil, err
}
x := &s2AServiceSetUpSessionClient{stream}
return x, nil
}
type S2AService_SetUpSessionClient interface {
Send(*SessionReq) error
Recv() (*SessionResp, error)
grpc.ClientStream
}
type s2AServiceSetUpSessionClient struct {
grpc.ClientStream
}
func (x *s2AServiceSetUpSessionClient) Send(m *SessionReq) error {
return x.ClientStream.SendMsg(m)
}
func (x *s2AServiceSetUpSessionClient) Recv() (*SessionResp, error) {
m := new(SessionResp)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// S2AServiceServer is the server API for S2AService service.
// All implementations must embed UnimplementedS2AServiceServer
// for forward compatibility
type S2AServiceServer interface {
// SetUpSession is a bidirectional stream used by applications to offload
// operations from the TLS handshake.
SetUpSession(S2AService_SetUpSessionServer) error
mustEmbedUnimplementedS2AServiceServer()
}
// UnimplementedS2AServiceServer must be embedded to have forward compatible implementations.
type UnimplementedS2AServiceServer struct {
}
func (UnimplementedS2AServiceServer) SetUpSession(S2AService_SetUpSessionServer) error {
return status.Errorf(codes.Unimplemented, "method SetUpSession not implemented")
}
func (UnimplementedS2AServiceServer) mustEmbedUnimplementedS2AServiceServer() {}
// UnsafeS2AServiceServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to S2AServiceServer will
// result in compilation errors.
type UnsafeS2AServiceServer interface {
mustEmbedUnimplementedS2AServiceServer()
}
func RegisterS2AServiceServer(s grpc.ServiceRegistrar, srv S2AServiceServer) {
s.RegisterService(&S2AService_ServiceDesc, srv)
}
func _S2AService_SetUpSession_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(S2AServiceServer).SetUpSession(&s2AServiceSetUpSessionServer{stream})
}
type S2AService_SetUpSessionServer interface {
Send(*SessionResp) error
Recv() (*SessionReq, error)
grpc.ServerStream
}
type s2AServiceSetUpSessionServer struct {
grpc.ServerStream
}
func (x *s2AServiceSetUpSessionServer) Send(m *SessionResp) error {
return x.ServerStream.SendMsg(m)
}
func (x *s2AServiceSetUpSessionServer) Recv() (*SessionReq, error) {
m := new(SessionReq)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// S2AService_ServiceDesc is the grpc.ServiceDesc for S2AService service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var S2AService_ServiceDesc = grpc.ServiceDesc{
ServiceName: "s2a.proto.v2.S2AService",
HandlerType: (*S2AServiceServer)(nil),
Methods: []grpc.MethodDesc{},
Streams: []grpc.StreamDesc{
{
StreamName: "SetUpSession",
Handler: _S2AService_SetUpSession_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "internal/proto/v2/s2a/s2a.proto",
}

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vendor/github.com/google/s2a-go/internal/record/internal/aeadcrypter/aeadcrypter.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package aeadcrypter provides the interface for AEAD cipher implementations
// used by S2A's record protocol.
package aeadcrypter
// S2AAEADCrypter is the interface for an AEAD cipher used by the S2A record
// protocol.
type S2AAEADCrypter interface {
// Encrypt encrypts the plaintext and computes the tag of dst and plaintext.
// dst and plaintext may fully overlap or not at all.
Encrypt(dst, plaintext, nonce, aad []byte) ([]byte, error)
// Decrypt decrypts ciphertext and verifies the tag. dst and ciphertext may
// fully overlap or not at all.
Decrypt(dst, ciphertext, nonce, aad []byte) ([]byte, error)
// TagSize returns the tag size in bytes.
TagSize() int
}

70
vendor/github.com/google/s2a-go/internal/record/internal/aeadcrypter/aesgcm.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package aeadcrypter
import (
"crypto/aes"
"crypto/cipher"
"fmt"
)
// Supported key sizes in bytes.
const (
AES128GCMKeySize = 16
AES256GCMKeySize = 32
)
// aesgcm is the struct that holds an AES-GCM cipher for the S2A AEAD crypter.
type aesgcm struct {
aead cipher.AEAD
}
// NewAESGCM creates an AES-GCM crypter instance. Note that the key must be
// either 128 bits or 256 bits.
func NewAESGCM(key []byte) (S2AAEADCrypter, error) {
if len(key) != AES128GCMKeySize && len(key) != AES256GCMKeySize {
return nil, fmt.Errorf("%d or %d bytes, given: %d", AES128GCMKeySize, AES256GCMKeySize, len(key))
}
c, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
a, err := cipher.NewGCM(c)
if err != nil {
return nil, err
}
return &aesgcm{aead: a}, nil
}
// Encrypt is the encryption function. dst can contain bytes at the beginning of
// the ciphertext that will not be encrypted but will be authenticated. If dst
// has enough capacity to hold these bytes, the ciphertext and the tag, no
// allocation and copy operations will be performed. dst and plaintext may
// fully overlap or not at all.
func (s *aesgcm) Encrypt(dst, plaintext, nonce, aad []byte) ([]byte, error) {
return encrypt(s.aead, dst, plaintext, nonce, aad)
}
func (s *aesgcm) Decrypt(dst, ciphertext, nonce, aad []byte) ([]byte, error) {
return decrypt(s.aead, dst, ciphertext, nonce, aad)
}
func (s *aesgcm) TagSize() int {
return TagSize
}

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vendor/github.com/google/s2a-go/internal/record/internal/aeadcrypter/chachapoly.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package aeadcrypter
import (
"crypto/cipher"
"fmt"
"golang.org/x/crypto/chacha20poly1305"
)
// Supported key size in bytes.
const (
Chacha20Poly1305KeySize = 32
)
// chachapoly is the struct that holds a CHACHA-POLY cipher for the S2A AEAD
// crypter.
type chachapoly struct {
aead cipher.AEAD
}
// NewChachaPoly creates a Chacha-Poly crypter instance. Note that the key must
// be Chacha20Poly1305KeySize bytes in length.
func NewChachaPoly(key []byte) (S2AAEADCrypter, error) {
if len(key) != Chacha20Poly1305KeySize {
return nil, fmt.Errorf("%d bytes, given: %d", Chacha20Poly1305KeySize, len(key))
}
c, err := chacha20poly1305.New(key)
if err != nil {
return nil, err
}
return &chachapoly{aead: c}, nil
}
// Encrypt is the encryption function. dst can contain bytes at the beginning of
// the ciphertext that will not be encrypted but will be authenticated. If dst
// has enough capacity to hold these bytes, the ciphertext and the tag, no
// allocation and copy operations will be performed. dst and plaintext may
// fully overlap or not at all.
func (s *chachapoly) Encrypt(dst, plaintext, nonce, aad []byte) ([]byte, error) {
return encrypt(s.aead, dst, plaintext, nonce, aad)
}
func (s *chachapoly) Decrypt(dst, ciphertext, nonce, aad []byte) ([]byte, error) {
return decrypt(s.aead, dst, ciphertext, nonce, aad)
}
func (s *chachapoly) TagSize() int {
return TagSize
}

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vendor/github.com/google/s2a-go/internal/record/internal/aeadcrypter/common.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package aeadcrypter
import (
"crypto/cipher"
"fmt"
)
const (
// TagSize is the tag size in bytes for AES-128-GCM-SHA256,
// AES-256-GCM-SHA384, and CHACHA20-POLY1305-SHA256.
TagSize = 16
// NonceSize is the size of the nonce in number of bytes for
// AES-128-GCM-SHA256, AES-256-GCM-SHA384, and CHACHA20-POLY1305-SHA256.
NonceSize = 12
// SHA256DigestSize is the digest size of sha256 in bytes.
SHA256DigestSize = 32
// SHA384DigestSize is the digest size of sha384 in bytes.
SHA384DigestSize = 48
)
// sliceForAppend takes a slice and a requested number of bytes. It returns a
// slice with the contents of the given slice followed by that many bytes and a
// second slice that aliases into it and contains only the extra bytes. If the
// original slice has sufficient capacity then no allocation is performed.
func sliceForAppend(in []byte, n int) (head, tail []byte) {
if total := len(in) + n; cap(in) >= total {
head = in[:total]
} else {
head = make([]byte, total)
copy(head, in)
}
tail = head[len(in):]
return head, tail
}
// encrypt is the encryption function for an AEAD crypter. aead determines
// the type of AEAD crypter. dst can contain bytes at the beginning of the
// ciphertext that will not be encrypted but will be authenticated. If dst has
// enough capacity to hold these bytes, the ciphertext and the tag, no
// allocation and copy operations will be performed. dst and plaintext may
// fully overlap or not at all.
func encrypt(aead cipher.AEAD, dst, plaintext, nonce, aad []byte) ([]byte, error) {
if len(nonce) != NonceSize {
return nil, fmt.Errorf("nonce size must be %d bytes. received: %d", NonceSize, len(nonce))
}
// If we need to allocate an output buffer, we want to include space for
// the tag to avoid forcing the caller to reallocate as well.
dlen := len(dst)
dst, out := sliceForAppend(dst, len(plaintext)+TagSize)
data := out[:len(plaintext)]
copy(data, plaintext) // data may fully overlap plaintext
// Seal appends the ciphertext and the tag to its first argument and
// returns the updated slice. However, sliceForAppend above ensures that
// dst has enough capacity to avoid a reallocation and copy due to the
// append.
dst = aead.Seal(dst[:dlen], nonce, data, aad)
return dst, nil
}
// decrypt is the decryption function for an AEAD crypter, where aead determines
// the type of AEAD crypter, and dst the destination bytes for the decrypted
// ciphertext. The dst buffer may fully overlap with plaintext or not at all.
func decrypt(aead cipher.AEAD, dst, ciphertext, nonce, aad []byte) ([]byte, error) {
if len(nonce) != NonceSize {
return nil, fmt.Errorf("nonce size must be %d bytes. received: %d", NonceSize, len(nonce))
}
// If dst is equal to ciphertext[:0], ciphertext storage is reused.
plaintext, err := aead.Open(dst, nonce, ciphertext, aad)
if err != nil {
return nil, fmt.Errorf("message auth failed: %v", err)
}
return plaintext, nil
}

98
vendor/github.com/google/s2a-go/internal/record/internal/halfconn/ciphersuite.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package halfconn
import (
"crypto/sha256"
"crypto/sha512"
"fmt"
"hash"
s2apb "github.com/google/s2a-go/internal/proto/common_go_proto"
"github.com/google/s2a-go/internal/record/internal/aeadcrypter"
)
// ciphersuite is the interface for retrieving ciphersuite-specific information
// and utilities.
type ciphersuite interface {
// keySize returns the key size in bytes. This refers to the key used by
// the AEAD crypter. This is derived by calling HKDF expand on the traffic
// secret.
keySize() int
// nonceSize returns the nonce size in bytes.
nonceSize() int
// trafficSecretSize returns the traffic secret size in bytes. This refers
// to the secret used to derive the traffic key and nonce, as specified in
// https://tools.ietf.org/html/rfc8446#section-7.
trafficSecretSize() int
// hashFunction returns the hash function for the ciphersuite.
hashFunction() func() hash.Hash
// aeadCrypter takes a key and creates an AEAD crypter for the ciphersuite
// using that key.
aeadCrypter(key []byte) (aeadcrypter.S2AAEADCrypter, error)
}
func newCiphersuite(ciphersuite s2apb.Ciphersuite) (ciphersuite, error) {
switch ciphersuite {
case s2apb.Ciphersuite_AES_128_GCM_SHA256:
return &aesgcm128sha256{}, nil
case s2apb.Ciphersuite_AES_256_GCM_SHA384:
return &aesgcm256sha384{}, nil
case s2apb.Ciphersuite_CHACHA20_POLY1305_SHA256:
return &chachapolysha256{}, nil
default:
return nil, fmt.Errorf("unrecognized ciphersuite: %v", ciphersuite)
}
}
// aesgcm128sha256 is the AES-128-GCM-SHA256 implementation of the ciphersuite
// interface.
type aesgcm128sha256 struct{}
func (aesgcm128sha256) keySize() int { return aeadcrypter.AES128GCMKeySize }
func (aesgcm128sha256) nonceSize() int { return aeadcrypter.NonceSize }
func (aesgcm128sha256) trafficSecretSize() int { return aeadcrypter.SHA256DigestSize }
func (aesgcm128sha256) hashFunction() func() hash.Hash { return sha256.New }
func (aesgcm128sha256) aeadCrypter(key []byte) (aeadcrypter.S2AAEADCrypter, error) {
return aeadcrypter.NewAESGCM(key)
}
// aesgcm256sha384 is the AES-256-GCM-SHA384 implementation of the ciphersuite
// interface.
type aesgcm256sha384 struct{}
func (aesgcm256sha384) keySize() int { return aeadcrypter.AES256GCMKeySize }
func (aesgcm256sha384) nonceSize() int { return aeadcrypter.NonceSize }
func (aesgcm256sha384) trafficSecretSize() int { return aeadcrypter.SHA384DigestSize }
func (aesgcm256sha384) hashFunction() func() hash.Hash { return sha512.New384 }
func (aesgcm256sha384) aeadCrypter(key []byte) (aeadcrypter.S2AAEADCrypter, error) {
return aeadcrypter.NewAESGCM(key)
}
// chachapolysha256 is the ChaChaPoly-SHA256 implementation of the ciphersuite
// interface.
type chachapolysha256 struct{}
func (chachapolysha256) keySize() int { return aeadcrypter.Chacha20Poly1305KeySize }
func (chachapolysha256) nonceSize() int { return aeadcrypter.NonceSize }
func (chachapolysha256) trafficSecretSize() int { return aeadcrypter.SHA256DigestSize }
func (chachapolysha256) hashFunction() func() hash.Hash { return sha256.New }
func (chachapolysha256) aeadCrypter(key []byte) (aeadcrypter.S2AAEADCrypter, error) {
return aeadcrypter.NewChachaPoly(key)
}

60
vendor/github.com/google/s2a-go/internal/record/internal/halfconn/counter.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package halfconn
import "errors"
// counter is a 64-bit counter.
type counter struct {
val uint64
hasOverflowed bool
}
// newCounter creates a new counter with the initial value set to val.
func newCounter(val uint64) counter {
return counter{val: val}
}
// value returns the current value of the counter.
func (c *counter) value() (uint64, error) {
if c.hasOverflowed {
return 0, errors.New("counter has overflowed")
}
return c.val, nil
}
// increment increments the counter and checks for overflow.
func (c *counter) increment() {
// If the counter is already invalid due to overflow, there is no need to
// increase it. We check for the hasOverflowed flag in the call to value().
if c.hasOverflowed {
return
}
c.val++
if c.val == 0 {
c.hasOverflowed = true
}
}
// reset sets the counter value to zero and sets the hasOverflowed flag to
// false.
func (c *counter) reset() {
c.val = 0
c.hasOverflowed = false
}

59
vendor/github.com/google/s2a-go/internal/record/internal/halfconn/expander.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package halfconn
import (
"fmt"
"hash"
"golang.org/x/crypto/hkdf"
)
// hkdfExpander is the interface for the HKDF expansion function; see
// https://tools.ietf.org/html/rfc5869 for details. its use in TLS 1.3 is
// specified in https://tools.ietf.org/html/rfc8446#section-7.2
type hkdfExpander interface {
// expand takes a secret, a label, and the output length in bytes, and
// returns the resulting expanded key.
expand(secret, label []byte, length int) ([]byte, error)
}
// defaultHKDFExpander is the default HKDF expander which uses Go's crypto/hkdf
// for HKDF expansion.
type defaultHKDFExpander struct {
h func() hash.Hash
}
// newDefaultHKDFExpander creates an instance of the default HKDF expander
// using the given hash function.
func newDefaultHKDFExpander(h func() hash.Hash) hkdfExpander {
return &defaultHKDFExpander{h: h}
}
func (d *defaultHKDFExpander) expand(secret, label []byte, length int) ([]byte, error) {
outBuf := make([]byte, length)
n, err := hkdf.Expand(d.h, secret, label).Read(outBuf)
if err != nil {
return nil, fmt.Errorf("hkdf.Expand.Read failed with error: %v", err)
}
if n < length {
return nil, fmt.Errorf("hkdf.Expand.Read returned unexpected length, got %d, want %d", n, length)
}
return outBuf, nil
}

193
vendor/github.com/google/s2a-go/internal/record/internal/halfconn/halfconn.go generated vendored Normal file
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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package halfconn manages the inbound or outbound traffic of a TLS 1.3
// connection.
package halfconn
import (
"fmt"
"sync"
s2apb "github.com/google/s2a-go/internal/proto/common_go_proto"
"github.com/google/s2a-go/internal/record/internal/aeadcrypter"
"golang.org/x/crypto/cryptobyte"
)
// The constants below were taken from Section 7.2 and 7.3 in
// https://tools.ietf.org/html/rfc8446#section-7. They are used as the label
// in HKDF-Expand-Label.
const (
tls13Key = "tls13 key"
tls13Nonce = "tls13 iv"
tls13Update = "tls13 traffic upd"
)
// S2AHalfConnection stores the state of the TLS 1.3 connection in the
// inbound or outbound direction.
type S2AHalfConnection struct {
cs ciphersuite
expander hkdfExpander
// mutex guards sequence, aeadCrypter, trafficSecret, and nonce.
mutex sync.Mutex
aeadCrypter aeadcrypter.S2AAEADCrypter
sequence counter
trafficSecret []byte
nonce []byte
}
// New creates a new instance of S2AHalfConnection given a ciphersuite and a
// traffic secret.
func New(ciphersuite s2apb.Ciphersuite, trafficSecret []byte, sequence uint64) (*S2AHalfConnection, error) {
cs, err := newCiphersuite(ciphersuite)
if err != nil {
return nil, fmt.Errorf("failed to create new ciphersuite: %v", ciphersuite)
}
if cs.trafficSecretSize() != len(trafficSecret) {
return nil, fmt.Errorf("supplied traffic secret must be %v bytes, given: %v bytes", cs.trafficSecretSize(), len(trafficSecret))
}
hc := &S2AHalfConnection{cs: cs, expander: newDefaultHKDFExpander(cs.hashFunction()), sequence: newCounter(sequence), trafficSecret: trafficSecret}
if err = hc.updateCrypterAndNonce(hc.trafficSecret); err != nil {
return nil, fmt.Errorf("failed to create half connection using traffic secret: %v", err)
}
return hc, nil
}
// Encrypt encrypts the plaintext and computes the tag of dst and plaintext.
// dst and plaintext may fully overlap or not at all. Note that the sequence
// number will still be incremented on failure, unless the sequence has
// overflowed.
func (hc *S2AHalfConnection) Encrypt(dst, plaintext, aad []byte) ([]byte, error) {
hc.mutex.Lock()
sequence, err := hc.getAndIncrementSequence()
if err != nil {
hc.mutex.Unlock()
return nil, err
}
nonce := hc.maskedNonce(sequence)
crypter := hc.aeadCrypter
hc.mutex.Unlock()
return crypter.Encrypt(dst, plaintext, nonce, aad)
}
// Decrypt decrypts ciphertext and verifies the tag. dst and ciphertext may
// fully overlap or not at all. Note that the sequence number will still be
// incremented on failure, unless the sequence has overflowed.
func (hc *S2AHalfConnection) Decrypt(dst, ciphertext, aad []byte) ([]byte, error) {
hc.mutex.Lock()
sequence, err := hc.getAndIncrementSequence()
if err != nil {
hc.mutex.Unlock()
return nil, err
}
nonce := hc.maskedNonce(sequence)
crypter := hc.aeadCrypter
hc.mutex.Unlock()
return crypter.Decrypt(dst, ciphertext, nonce, aad)
}
// UpdateKey advances the traffic secret key, as specified in
// https://tools.ietf.org/html/rfc8446#section-7.2. In addition, it derives
// a new key and nonce, and resets the sequence number.
func (hc *S2AHalfConnection) UpdateKey() error {
hc.mutex.Lock()
defer hc.mutex.Unlock()
var err error
hc.trafficSecret, err = hc.deriveSecret(hc.trafficSecret, []byte(tls13Update), hc.cs.trafficSecretSize())
if err != nil {
return fmt.Errorf("failed to derive traffic secret: %v", err)
}
if err = hc.updateCrypterAndNonce(hc.trafficSecret); err != nil {
return fmt.Errorf("failed to update half connection: %v", err)
}
hc.sequence.reset()
return nil
}
// TagSize returns the tag size in bytes of the underlying AEAD crypter.
func (hc *S2AHalfConnection) TagSize() int {
return hc.aeadCrypter.TagSize()
}
// updateCrypterAndNonce takes a new traffic secret and updates the crypter
// and nonce. Note that the mutex must be held while calling this function.
func (hc *S2AHalfConnection) updateCrypterAndNonce(newTrafficSecret []byte) error {
key, err := hc.deriveSecret(newTrafficSecret, []byte(tls13Key), hc.cs.keySize())
if err != nil {
return fmt.Errorf("failed to update key: %v", err)
}
hc.nonce, err = hc.deriveSecret(newTrafficSecret, []byte(tls13Nonce), hc.cs.nonceSize())
if err != nil {
return fmt.Errorf("failed to update nonce: %v", err)
}
hc.aeadCrypter, err = hc.cs.aeadCrypter(key)
if err != nil {
return fmt.Errorf("failed to update AEAD crypter: %v", err)
}
return nil
}
// getAndIncrement returns the current sequence number and increments it. Note
// that the mutex must be held while calling this function.
func (hc *S2AHalfConnection) getAndIncrementSequence() (uint64, error) {
sequence, err := hc.sequence.value()
if err != nil {
return 0, err
}
hc.sequence.increment()
return sequence, nil
}
// maskedNonce creates a copy of the nonce that is masked with the sequence
// number. Note that the mutex must be held while calling this function.
func (hc *S2AHalfConnection) maskedNonce(sequence uint64) []byte {
const uint64Size = 8
nonce := make([]byte, len(hc.nonce))
copy(nonce, hc.nonce)
for i := 0; i < uint64Size; i++ {
nonce[aeadcrypter.NonceSize-uint64Size+i] ^= byte(sequence >> uint64(56-uint64Size*i))
}
return nonce
}
// deriveSecret implements the Derive-Secret function, as specified in
// https://tools.ietf.org/html/rfc8446#section-7.1.
func (hc *S2AHalfConnection) deriveSecret(secret, label []byte, length int) ([]byte, error) {
var hkdfLabel cryptobyte.Builder
hkdfLabel.AddUint16(uint16(length))
hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
b.AddBytes(label)
})
// Append an empty `Context` field to the label, as specified in the RFC.
// The half connection does not use the `Context` field.
hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
b.AddBytes([]byte(""))
})
hkdfLabelBytes, err := hkdfLabel.Bytes()
if err != nil {
return nil, fmt.Errorf("deriveSecret failed: %v", err)
}
return hc.expander.expand(secret, hkdfLabelBytes, length)
}

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vendor/github.com/google/s2a-go/internal/record/record.go generated vendored Normal file
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@ -0,0 +1,757 @@
/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package record implements the TLS 1.3 record protocol used by the S2A
// transport credentials.
package record
import (
"encoding/binary"
"errors"
"fmt"
"math"
"net"
"sync"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
"github.com/google/s2a-go/internal/record/internal/halfconn"
"github.com/google/s2a-go/internal/tokenmanager"
"google.golang.org/grpc/grpclog"
)
// recordType is the `ContentType` as described in
// https://tools.ietf.org/html/rfc8446#section-5.1.
type recordType byte
const (
alert recordType = 21
handshake recordType = 22
applicationData recordType = 23
)
// keyUpdateRequest is the `KeyUpdateRequest` as described in
// https://tools.ietf.org/html/rfc8446#section-4.6.3.
type keyUpdateRequest byte
const (
updateNotRequested keyUpdateRequest = 0
updateRequested keyUpdateRequest = 1
)
// alertDescription is the `AlertDescription` as described in
// https://tools.ietf.org/html/rfc8446#section-6.
type alertDescription byte
const (
closeNotify alertDescription = 0
)
// sessionTicketState is used to determine whether session tickets have not yet
// been received, are in the process of being received, or have finished
// receiving.
type sessionTicketState byte
const (
ticketsNotYetReceived sessionTicketState = 0
receivingTickets sessionTicketState = 1
notReceivingTickets sessionTicketState = 2
)
const (
// The TLS 1.3-specific constants below (tlsRecordMaxPlaintextSize,
// tlsRecordHeaderSize, tlsRecordTypeSize) were taken from
// https://tools.ietf.org/html/rfc8446#section-5.1.
// tlsRecordMaxPlaintextSize is the maximum size in bytes of the plaintext
// in a single TLS 1.3 record.
tlsRecordMaxPlaintextSize = 16384 // 2^14
// tlsRecordTypeSize is the size in bytes of the TLS 1.3 record type.
tlsRecordTypeSize = 1
// tlsTagSize is the size in bytes of the tag of the following three
// ciphersuites: AES-128-GCM-SHA256, AES-256-GCM-SHA384,
// CHACHA20-POLY1305-SHA256.
tlsTagSize = 16
// tlsRecordMaxPayloadSize is the maximum size in bytes of the payload in a
// single TLS 1.3 record. This is the maximum size of the plaintext plus the
// record type byte and 16 bytes of the tag.
tlsRecordMaxPayloadSize = tlsRecordMaxPlaintextSize + tlsRecordTypeSize + tlsTagSize
// tlsRecordHeaderTypeSize is the size in bytes of the TLS 1.3 record
// header type.
tlsRecordHeaderTypeSize = 1
// tlsRecordHeaderLegacyRecordVersionSize is the size in bytes of the TLS
// 1.3 record header legacy record version.
tlsRecordHeaderLegacyRecordVersionSize = 2
// tlsRecordHeaderPayloadLengthSize is the size in bytes of the TLS 1.3
// record header payload length.
tlsRecordHeaderPayloadLengthSize = 2
// tlsRecordHeaderSize is the size in bytes of the TLS 1.3 record header.
tlsRecordHeaderSize = tlsRecordHeaderTypeSize + tlsRecordHeaderLegacyRecordVersionSize + tlsRecordHeaderPayloadLengthSize
// tlsRecordMaxSize
tlsRecordMaxSize = tlsRecordMaxPayloadSize + tlsRecordHeaderSize
// tlsApplicationData is the application data type of the TLS 1.3 record
// header.
tlsApplicationData = 23
// tlsLegacyRecordVersion is the legacy record version of the TLS record.
tlsLegacyRecordVersion = 3
// tlsAlertSize is the size in bytes of an alert of TLS 1.3.
tlsAlertSize = 2
)
const (
// These are TLS 1.3 handshake-specific constants.
// tlsHandshakeNewSessionTicketType is the prefix of a handshake new session
// ticket message of TLS 1.3.
tlsHandshakeNewSessionTicketType = 4
// tlsHandshakeKeyUpdateType is the prefix of a handshake key update message
// of TLS 1.3.
tlsHandshakeKeyUpdateType = 24
// tlsHandshakeMsgTypeSize is the size in bytes of the TLS 1.3 handshake
// message type field.
tlsHandshakeMsgTypeSize = 1
// tlsHandshakeLengthSize is the size in bytes of the TLS 1.3 handshake
// message length field.
tlsHandshakeLengthSize = 3
// tlsHandshakeKeyUpdateMsgSize is the size in bytes of the TLS 1.3
// handshake key update message.
tlsHandshakeKeyUpdateMsgSize = 1
// tlsHandshakePrefixSize is the size in bytes of the prefix of the TLS 1.3
// handshake message.
tlsHandshakePrefixSize = 4
// tlsMaxSessionTicketSize is the maximum size of a NewSessionTicket message
// in TLS 1.3. This is the sum of the max sizes of all the fields in the
// NewSessionTicket struct specified in
// https://tools.ietf.org/html/rfc8446#section-4.6.1.
tlsMaxSessionTicketSize = 131338
)
const (
// outBufMaxRecords is the maximum number of records that can fit in the
// ourRecordsBuf buffer.
outBufMaxRecords = 16
// outBufMaxSize is the maximum size (in bytes) of the outRecordsBuf buffer.
outBufMaxSize = outBufMaxRecords * tlsRecordMaxSize
// maxAllowedTickets is the maximum number of session tickets that are
// allowed. The number of tickets are limited to ensure that the size of the
// ticket queue does not grow indefinitely. S2A also keeps a limit on the
// number of tickets that it caches.
maxAllowedTickets = 5
)
// preConstructedKeyUpdateMsg holds the key update message. This is needed as an
// optimization so that the same message does not need to be constructed every
// time a key update message is sent.
var preConstructedKeyUpdateMsg = buildKeyUpdateRequest()
// conn represents a secured TLS connection. It implements the net.Conn
// interface.
type conn struct {
net.Conn
// inConn is the half connection responsible for decrypting incoming bytes.
inConn *halfconn.S2AHalfConnection
// outConn is the half connection responsible for encrypting outgoing bytes.
outConn *halfconn.S2AHalfConnection
// pendingApplicationData holds data that has been read from the connection
// and decrypted, but has not yet been returned by Read.
pendingApplicationData []byte
// unusedBuf holds data read from the network that has not yet been
// decrypted. This data might not consist of a complete record. It may
// consist of several records, the last of which could be incomplete.
unusedBuf []byte
// outRecordsBuf is a buffer used to store outgoing TLS records before
// they are written to the network.
outRecordsBuf []byte
// nextRecord stores the next record info in the unusedBuf buffer.
nextRecord []byte
// overheadSize is the overhead size in bytes of each TLS 1.3 record, which
// is computed as overheadSize = header size + record type byte + tag size.
// Note that there is no padding by zeros in the overhead calculation.
overheadSize int
// readMutex guards against concurrent calls to Read. This is required since
// Close may be called during a Read.
readMutex sync.Mutex
// writeMutex guards against concurrent calls to Write. This is required
// since Close may be called during a Write, and also because a key update
// message may be written during a Read.
writeMutex sync.Mutex
// handshakeBuf holds handshake messages while they are being processed.
handshakeBuf []byte
// ticketState is the current processing state of the session tickets.
ticketState sessionTicketState
// sessionTickets holds the completed session tickets until they are sent to
// the handshaker service for processing.
sessionTickets [][]byte
// ticketSender sends session tickets to the S2A handshaker service.
ticketSender s2aTicketSender
// callComplete is a channel that blocks closing the record protocol until a
// pending call to the S2A completes.
callComplete chan bool
}
// ConnParameters holds the parameters used for creating a new conn object.
type ConnParameters struct {
// NetConn is the TCP connection to the peer. This parameter is required.
NetConn net.Conn
// Ciphersuite is the TLS ciphersuite negotiated by the S2A handshaker
// service. This parameter is required.
Ciphersuite commonpb.Ciphersuite
// TLSVersion is the TLS version number negotiated by the S2A handshaker
// service. This parameter is required.
TLSVersion commonpb.TLSVersion
// InTrafficSecret is the traffic secret used to derive the session key for
// the inbound direction. This parameter is required.
InTrafficSecret []byte
// OutTrafficSecret is the traffic secret used to derive the session key
// for the outbound direction. This parameter is required.
OutTrafficSecret []byte
// UnusedBuf is the data read from the network that has not yet been
// decrypted. This parameter is optional. If not provided, then no
// application data was sent in the same flight of messages as the final
// handshake message.
UnusedBuf []byte
// InSequence is the sequence number of the next, incoming, TLS record.
// This parameter is required.
InSequence uint64
// OutSequence is the sequence number of the next, outgoing, TLS record.
// This parameter is required.
OutSequence uint64
// HSAddr stores the address of the S2A handshaker service. This parameter
// is optional. If not provided, then TLS resumption is disabled.
HSAddr string
// ConnectionId is the connection identifier that was created and sent by
// S2A at the end of a handshake.
ConnectionID uint64
// LocalIdentity is the local identity that was used by S2A during session
// setup and included in the session result.
LocalIdentity *commonpb.Identity
// EnsureProcessSessionTickets allows users to wait and ensure that all
// available session tickets are sent to S2A before a process completes.
EnsureProcessSessionTickets *sync.WaitGroup
}
// NewConn creates a TLS record protocol that wraps the TCP connection.
func NewConn(o *ConnParameters) (net.Conn, error) {
if o == nil {
return nil, errors.New("conn options must not be nil")
}
if o.TLSVersion != commonpb.TLSVersion_TLS1_3 {
return nil, errors.New("TLS version must be TLS 1.3")
}
inConn, err := halfconn.New(o.Ciphersuite, o.InTrafficSecret, o.InSequence)
if err != nil {
return nil, fmt.Errorf("failed to create inbound half connection: %v", err)
}
outConn, err := halfconn.New(o.Ciphersuite, o.OutTrafficSecret, o.OutSequence)
if err != nil {
return nil, fmt.Errorf("failed to create outbound half connection: %v", err)
}
// The tag size for the in/out connections should be the same.
overheadSize := tlsRecordHeaderSize + tlsRecordTypeSize + inConn.TagSize()
var unusedBuf []byte
if o.UnusedBuf == nil {
// We pre-allocate unusedBuf to be of size
// 2*tlsRecordMaxSize-1 during initialization. We only read from the
// network into unusedBuf when unusedBuf does not contain a complete
// record and the incomplete record is at most tlsRecordMaxSize-1
// (bytes). And we read at most tlsRecordMaxSize bytes of data from the
// network into unusedBuf at one time. Therefore, 2*tlsRecordMaxSize-1
// is large enough to buffer data read from the network.
unusedBuf = make([]byte, 0, 2*tlsRecordMaxSize-1)
} else {
unusedBuf = make([]byte, len(o.UnusedBuf))
copy(unusedBuf, o.UnusedBuf)
}
tokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
if err != nil {
grpclog.Infof("failed to create single token access token manager: %v", err)
}
s2aConn := &conn{
Conn: o.NetConn,
inConn: inConn,
outConn: outConn,
unusedBuf: unusedBuf,
outRecordsBuf: make([]byte, tlsRecordMaxSize),
nextRecord: unusedBuf,
overheadSize: overheadSize,
ticketState: ticketsNotYetReceived,
// Pre-allocate the buffer for one session ticket message and the max
// plaintext size. This is the largest size that handshakeBuf will need
// to hold. The largest incomplete handshake message is the
// [handshake header size] + [max session ticket size] - 1.
// Then, tlsRecordMaxPlaintextSize is the maximum size that will be
// appended to the handshakeBuf before the handshake message is
// completed. Therefore, the buffer size below should be large enough to
// buffer any handshake messages.
handshakeBuf: make([]byte, 0, tlsHandshakePrefixSize+tlsMaxSessionTicketSize+tlsRecordMaxPlaintextSize-1),
ticketSender: &ticketSender{
hsAddr: o.HSAddr,
connectionID: o.ConnectionID,
localIdentity: o.LocalIdentity,
tokenManager: tokenManager,
ensureProcessSessionTickets: o.EnsureProcessSessionTickets,
},
callComplete: make(chan bool),
}
return s2aConn, nil
}
// Read reads and decrypts a TLS 1.3 record from the underlying connection, and
// copies any application data received from the peer into b. If the size of the
// payload is greater than len(b), Read retains the remaining bytes in an
// internal buffer, and subsequent calls to Read will read from this buffer
// until it is exhausted. At most 1 TLS record worth of application data is
// written to b for each call to Read.
//
// Note that for the user to efficiently call this method, the user should
// ensure that the buffer b is allocated such that the buffer does not have any
// unused segments. This can be done by calling Read via io.ReadFull, which
// continually calls Read until the specified buffer has been filled. Also note
// that the user should close the connection via Close() if an error is thrown
// by a call to Read.
func (p *conn) Read(b []byte) (n int, err error) {
p.readMutex.Lock()
defer p.readMutex.Unlock()
// Check if p.pendingApplication data has leftover application data from
// the previous call to Read.
if len(p.pendingApplicationData) == 0 {
// Read a full record from the wire.
record, err := p.readFullRecord()
if err != nil {
return 0, err
}
// Now we have a complete record, so split the header and validate it
// The TLS record is split into 2 pieces: the record header and the
// payload. The payload has the following form:
// [payload] = [ciphertext of application data]
// + [ciphertext of record type byte]
// + [(optionally) ciphertext of padding by zeros]
// + [tag]
header, payload, err := splitAndValidateHeader(record)
if err != nil {
return 0, err
}
// Decrypt the ciphertext.
p.pendingApplicationData, err = p.inConn.Decrypt(payload[:0], payload, header)
if err != nil {
return 0, err
}
// Remove the padding by zeros and the record type byte from the
// p.pendingApplicationData buffer.
msgType, err := p.stripPaddingAndType()
if err != nil {
return 0, err
}
// Check that the length of the plaintext after stripping the padding
// and record type byte is under the maximum plaintext size.
if len(p.pendingApplicationData) > tlsRecordMaxPlaintextSize {
return 0, errors.New("plaintext size larger than maximum")
}
// The expected message types are application data, alert, and
// handshake. For application data, the bytes are directly copied into
// b. For an alert, the type of the alert is checked and the connection
// is closed on a close notify alert. For a handshake message, the
// handshake message type is checked. The handshake message type can be
// a key update type, for which we advance the traffic secret, and a
// new session ticket type, for which we send the received ticket to S2A
// for processing.
switch msgType {
case applicationData:
if len(p.handshakeBuf) > 0 {
return 0, errors.New("application data received while processing fragmented handshake messages")
}
if p.ticketState == receivingTickets {
p.ticketState = notReceivingTickets
grpclog.Infof("Sending session tickets to S2A.")
p.ticketSender.sendTicketsToS2A(p.sessionTickets, p.callComplete)
}
case alert:
return 0, p.handleAlertMessage()
case handshake:
if err = p.handleHandshakeMessage(); err != nil {
return 0, err
}
return 0, nil
default:
return 0, errors.New("unknown record type")
}
}
// Write as much application data as possible to b, the output buffer.
n = copy(b, p.pendingApplicationData)
p.pendingApplicationData = p.pendingApplicationData[n:]
return n, nil
}
// Write divides b into segments of size tlsRecordMaxPlaintextSize, builds a
// TLS 1.3 record (of type "application data") from each segment, and sends
// the record to the peer. It returns the number of plaintext bytes that were
// successfully sent to the peer.
func (p *conn) Write(b []byte) (n int, err error) {
p.writeMutex.Lock()
defer p.writeMutex.Unlock()
return p.writeTLSRecord(b, tlsApplicationData)
}
// writeTLSRecord divides b into segments of size maxPlaintextBytesPerRecord,
// builds a TLS 1.3 record (of type recordType) from each segment, and sends
// the record to the peer. It returns the number of plaintext bytes that were
// successfully sent to the peer.
func (p *conn) writeTLSRecord(b []byte, recordType byte) (n int, err error) {
// Create a record of only header, record type, and tag if given empty
// byte array.
if len(b) == 0 {
recordEndIndex, _, err := p.buildRecord(b, recordType, 0)
if err != nil {
return 0, err
}
// Write the bytes stored in outRecordsBuf to p.Conn. Since we return
// the number of plaintext bytes written without overhead, we will
// always return 0 while p.Conn.Write returns the entire record length.
_, err = p.Conn.Write(p.outRecordsBuf[:recordEndIndex])
return 0, err
}
numRecords := int(math.Ceil(float64(len(b)) / float64(tlsRecordMaxPlaintextSize)))
totalRecordsSize := len(b) + numRecords*p.overheadSize
partialBSize := len(b)
if totalRecordsSize > outBufMaxSize {
totalRecordsSize = outBufMaxSize
partialBSize = outBufMaxRecords * tlsRecordMaxPlaintextSize
}
if len(p.outRecordsBuf) < totalRecordsSize {
p.outRecordsBuf = make([]byte, totalRecordsSize)
}
for bStart := 0; bStart < len(b); bStart += partialBSize {
bEnd := bStart + partialBSize
if bEnd > len(b) {
bEnd = len(b)
}
partialB := b[bStart:bEnd]
recordEndIndex := 0
for len(partialB) > 0 {
recordEndIndex, partialB, err = p.buildRecord(partialB, recordType, recordEndIndex)
if err != nil {
// Return the amount of bytes written prior to the error.
return bStart, err
}
}
// Write the bytes stored in outRecordsBuf to p.Conn. If there is an
// error, calculate the total number of plaintext bytes of complete
// records successfully written to the peer and return it.
nn, err := p.Conn.Write(p.outRecordsBuf[:recordEndIndex])
if err != nil {
numberOfCompletedRecords := int(math.Floor(float64(nn) / float64(tlsRecordMaxSize)))
return bStart + numberOfCompletedRecords*tlsRecordMaxPlaintextSize, err
}
}
return len(b), nil
}
// buildRecord builds a TLS 1.3 record of type recordType from plaintext,
// and writes the record to outRecordsBuf at recordStartIndex. The record will
// have at most tlsRecordMaxPlaintextSize bytes of payload. It returns the
// index of outRecordsBuf where the current record ends, as well as any
// remaining plaintext bytes.
func (p *conn) buildRecord(plaintext []byte, recordType byte, recordStartIndex int) (n int, remainingPlaintext []byte, err error) {
// Construct the payload, which consists of application data and record type.
dataLen := len(plaintext)
if dataLen > tlsRecordMaxPlaintextSize {
dataLen = tlsRecordMaxPlaintextSize
}
remainingPlaintext = plaintext[dataLen:]
newRecordBuf := p.outRecordsBuf[recordStartIndex:]
copy(newRecordBuf[tlsRecordHeaderSize:], plaintext[:dataLen])
newRecordBuf[tlsRecordHeaderSize+dataLen] = recordType
payload := newRecordBuf[tlsRecordHeaderSize : tlsRecordHeaderSize+dataLen+1] // 1 is for the recordType.
// Construct the header.
newRecordBuf[0] = tlsApplicationData
newRecordBuf[1] = tlsLegacyRecordVersion
newRecordBuf[2] = tlsLegacyRecordVersion
binary.BigEndian.PutUint16(newRecordBuf[3:], uint16(len(payload)+tlsTagSize))
header := newRecordBuf[:tlsRecordHeaderSize]
// Encrypt the payload using header as aad.
encryptedPayload, err := p.outConn.Encrypt(newRecordBuf[tlsRecordHeaderSize:][:0], payload, header)
if err != nil {
return 0, plaintext, err
}
recordStartIndex += len(header) + len(encryptedPayload)
return recordStartIndex, remainingPlaintext, nil
}
func (p *conn) Close() error {
p.readMutex.Lock()
defer p.readMutex.Unlock()
p.writeMutex.Lock()
defer p.writeMutex.Unlock()
// If p.ticketState is equal to notReceivingTickets, then S2A has
// been sent a flight of session tickets, and we must wait for the
// call to S2A to complete before closing the record protocol.
if p.ticketState == notReceivingTickets {
<-p.callComplete
grpclog.Infof("Safe to close the connection because sending tickets to S2A is (already) complete.")
}
return p.Conn.Close()
}
// stripPaddingAndType strips the padding by zeros and record type from
// p.pendingApplicationData and returns the record type. Note that
// p.pendingApplicationData should be of the form:
// [application data] + [record type byte] + [trailing zeros]
func (p *conn) stripPaddingAndType() (recordType, error) {
if len(p.pendingApplicationData) == 0 {
return 0, errors.New("application data had length 0")
}
i := len(p.pendingApplicationData) - 1
// Search for the index of the record type byte.
for i > 0 {
if p.pendingApplicationData[i] != 0 {
break
}
i--
}
rt := recordType(p.pendingApplicationData[i])
p.pendingApplicationData = p.pendingApplicationData[:i]
return rt, nil
}
// readFullRecord reads from the wire until a record is completed and returns
// the full record.
func (p *conn) readFullRecord() (fullRecord []byte, err error) {
fullRecord, p.nextRecord, err = parseReadBuffer(p.nextRecord, tlsRecordMaxPayloadSize)
if err != nil {
return nil, err
}
// Check whether the next record to be decrypted has been completely
// received.
if len(fullRecord) == 0 {
copy(p.unusedBuf, p.nextRecord)
p.unusedBuf = p.unusedBuf[:len(p.nextRecord)]
// Always copy next incomplete record to the beginning of the
// unusedBuf buffer and reset nextRecord to it.
p.nextRecord = p.unusedBuf
}
// Keep reading from the wire until we have a complete record.
for len(fullRecord) == 0 {
if len(p.unusedBuf) == cap(p.unusedBuf) {
tmp := make([]byte, len(p.unusedBuf), cap(p.unusedBuf)+tlsRecordMaxSize)
copy(tmp, p.unusedBuf)
p.unusedBuf = tmp
}
n, err := p.Conn.Read(p.unusedBuf[len(p.unusedBuf):min(cap(p.unusedBuf), len(p.unusedBuf)+tlsRecordMaxSize)])
if err != nil {
return nil, err
}
p.unusedBuf = p.unusedBuf[:len(p.unusedBuf)+n]
fullRecord, p.nextRecord, err = parseReadBuffer(p.unusedBuf, tlsRecordMaxPayloadSize)
if err != nil {
return nil, err
}
}
return fullRecord, nil
}
// parseReadBuffer parses the provided buffer and returns a full record and any
// remaining bytes in that buffer. If the record is incomplete, nil is returned
// for the first return value and the given byte buffer is returned for the
// second return value. The length of the payload specified by the header should
// not be greater than maxLen, otherwise an error is returned. Note that this
// function does not allocate or copy any buffers.
func parseReadBuffer(b []byte, maxLen uint16) (fullRecord, remaining []byte, err error) {
// If the header is not complete, return the provided buffer as remaining
// buffer.
if len(b) < tlsRecordHeaderSize {
return nil, b, nil
}
msgLenField := b[tlsRecordHeaderTypeSize+tlsRecordHeaderLegacyRecordVersionSize : tlsRecordHeaderSize]
length := binary.BigEndian.Uint16(msgLenField)
if length > maxLen {
return nil, nil, fmt.Errorf("record length larger than the limit %d", maxLen)
}
if len(b) < int(length)+tlsRecordHeaderSize {
// Record is not complete yet.
return nil, b, nil
}
return b[:tlsRecordHeaderSize+length], b[tlsRecordHeaderSize+length:], nil
}
// splitAndValidateHeader splits the header from the payload in the TLS 1.3
// record and returns them. Note that the header is checked for validity, and an
// error is returned when an invalid header is parsed. Also note that this
// function does not allocate or copy any buffers.
func splitAndValidateHeader(record []byte) (header, payload []byte, err error) {
if len(record) < tlsRecordHeaderSize {
return nil, nil, fmt.Errorf("record was smaller than the header size")
}
header = record[:tlsRecordHeaderSize]
payload = record[tlsRecordHeaderSize:]
if header[0] != tlsApplicationData {
return nil, nil, fmt.Errorf("incorrect type in the header")
}
// Check the legacy record version, which should be 0x03, 0x03.
if header[1] != 0x03 || header[2] != 0x03 {
return nil, nil, fmt.Errorf("incorrect legacy record version in the header")
}
return header, payload, nil
}
// handleAlertMessage handles an alert message.
func (p *conn) handleAlertMessage() error {
if len(p.pendingApplicationData) != tlsAlertSize {
return errors.New("invalid alert message size")
}
alertType := p.pendingApplicationData[1]
// Clear the body of the alert message.
p.pendingApplicationData = p.pendingApplicationData[:0]
if alertType == byte(closeNotify) {
return errors.New("received a close notify alert")
}
// TODO(matthewstevenson88): Add support for more alert types.
return fmt.Errorf("received an unrecognized alert type: %v", alertType)
}
// parseHandshakeHeader parses a handshake message from the handshake buffer.
// It returns the message type, the message length, the message, the raw message
// that includes the type and length bytes and a flag indicating whether the
// handshake message has been fully parsed. i.e. whether the entire handshake
// message was in the handshake buffer.
func (p *conn) parseHandshakeMsg() (msgType byte, msgLen uint32, msg []byte, rawMsg []byte, ok bool) {
// Handle the case where the 4 byte handshake header is fragmented.
if len(p.handshakeBuf) < tlsHandshakePrefixSize {
return 0, 0, nil, nil, false
}
msgType = p.handshakeBuf[0]
msgLen = bigEndianInt24(p.handshakeBuf[tlsHandshakeMsgTypeSize : tlsHandshakeMsgTypeSize+tlsHandshakeLengthSize])
if msgLen > uint32(len(p.handshakeBuf)-tlsHandshakePrefixSize) {
return 0, 0, nil, nil, false
}
msg = p.handshakeBuf[tlsHandshakePrefixSize : tlsHandshakePrefixSize+msgLen]
rawMsg = p.handshakeBuf[:tlsHandshakeMsgTypeSize+tlsHandshakeLengthSize+msgLen]
p.handshakeBuf = p.handshakeBuf[tlsHandshakePrefixSize+msgLen:]
return msgType, msgLen, msg, rawMsg, true
}
// handleHandshakeMessage handles a handshake message. Note that the first
// complete handshake message from the handshake buffer is removed, if it
// exists.
func (p *conn) handleHandshakeMessage() error {
// Copy the pending application data to the handshake buffer. At this point,
// we are guaranteed that the pending application data contains only parts
// of a handshake message.
p.handshakeBuf = append(p.handshakeBuf, p.pendingApplicationData...)
p.pendingApplicationData = p.pendingApplicationData[:0]
// Several handshake messages may be coalesced into a single record.
// Continue reading them until the handshake buffer is empty.
for len(p.handshakeBuf) > 0 {
handshakeMsgType, msgLen, msg, rawMsg, ok := p.parseHandshakeMsg()
if !ok {
// The handshake could not be fully parsed, so read in another
// record and try again later.
break
}
switch handshakeMsgType {
case tlsHandshakeKeyUpdateType:
if msgLen != tlsHandshakeKeyUpdateMsgSize {
return errors.New("invalid handshake key update message length")
}
if len(p.handshakeBuf) != 0 {
return errors.New("key update message must be the last message of a handshake record")
}
if err := p.handleKeyUpdateMsg(msg); err != nil {
return err
}
case tlsHandshakeNewSessionTicketType:
// Ignore tickets that are received after a batch of tickets has
// been sent to S2A.
if p.ticketState == notReceivingTickets {
continue
}
if p.ticketState == ticketsNotYetReceived {
p.ticketState = receivingTickets
}
p.sessionTickets = append(p.sessionTickets, rawMsg)
if len(p.sessionTickets) == maxAllowedTickets {
p.ticketState = notReceivingTickets
grpclog.Infof("Sending session tickets to S2A.")
p.ticketSender.sendTicketsToS2A(p.sessionTickets, p.callComplete)
}
default:
return errors.New("unknown handshake message type")
}
}
return nil
}
func buildKeyUpdateRequest() []byte {
b := make([]byte, tlsHandshakePrefixSize+tlsHandshakeKeyUpdateMsgSize)
b[0] = tlsHandshakeKeyUpdateType
b[1] = 0
b[2] = 0
b[3] = tlsHandshakeKeyUpdateMsgSize
b[4] = byte(updateNotRequested)
return b
}
// handleKeyUpdateMsg handles a key update message.
func (p *conn) handleKeyUpdateMsg(msg []byte) error {
keyUpdateRequest := msg[0]
if keyUpdateRequest != byte(updateNotRequested) &&
keyUpdateRequest != byte(updateRequested) {
return errors.New("invalid handshake key update message")
}
if err := p.inConn.UpdateKey(); err != nil {
return err
}
// Send a key update message back to the peer if requested.
if keyUpdateRequest == byte(updateRequested) {
p.writeMutex.Lock()
defer p.writeMutex.Unlock()
n, err := p.writeTLSRecord(preConstructedKeyUpdateMsg, byte(handshake))
if err != nil {
return err
}
if n != tlsHandshakePrefixSize+tlsHandshakeKeyUpdateMsgSize {
return errors.New("key update request message wrote less bytes than expected")
}
if err = p.outConn.UpdateKey(); err != nil {
return err
}
}
return nil
}
// bidEndianInt24 converts the given byte buffer of at least size 3 and
// outputs the resulting 24 bit integer as a uint32. This is needed because
// TLS 1.3 requires 3 byte integers, and the binary.BigEndian package does
// not provide a way to transform a byte buffer into a 3 byte integer.
func bigEndianInt24(b []byte) uint32 {
_ = b[2] // bounds check hint to compiler; see golang.org/issue/14808
return uint32(b[2]) | uint32(b[1])<<8 | uint32(b[0])<<16
}
func min(a, b int) int {
if a < b {
return a
}
return b
}

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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package record
import (
"context"
"fmt"
"sync"
"time"
"github.com/google/s2a-go/internal/handshaker/service"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
s2apb "github.com/google/s2a-go/internal/proto/s2a_go_proto"
"github.com/google/s2a-go/internal/tokenmanager"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
)
// sessionTimeout is the timeout for creating a session with the S2A handshaker
// service.
const sessionTimeout = time.Second * 5
// s2aTicketSender sends session tickets to the S2A handshaker service.
type s2aTicketSender interface {
// sendTicketsToS2A sends the given session tickets to the S2A handshaker
// service.
sendTicketsToS2A(sessionTickets [][]byte, callComplete chan bool)
}
// ticketStream is the stream used to send and receive session information.
type ticketStream interface {
Send(*s2apb.SessionReq) error
Recv() (*s2apb.SessionResp, error)
}
type ticketSender struct {
// hsAddr stores the address of the S2A handshaker service.
hsAddr string
// connectionID is the connection identifier that was created and sent by
// S2A at the end of a handshake.
connectionID uint64
// localIdentity is the local identity that was used by S2A during session
// setup and included in the session result.
localIdentity *commonpb.Identity
// tokenManager manages access tokens for authenticating to S2A.
tokenManager tokenmanager.AccessTokenManager
// ensureProcessSessionTickets allows users to wait and ensure that all
// available session tickets are sent to S2A before a process completes.
ensureProcessSessionTickets *sync.WaitGroup
}
// sendTicketsToS2A sends the given sessionTickets to the S2A handshaker
// service. This is done asynchronously and writes to the error logs if an error
// occurs.
func (t *ticketSender) sendTicketsToS2A(sessionTickets [][]byte, callComplete chan bool) {
// Note that the goroutine is in the function rather than at the caller
// because the fake ticket sender used for testing must run synchronously
// so that the session tickets can be accessed from it after the tests have
// been run.
if t.ensureProcessSessionTickets != nil {
t.ensureProcessSessionTickets.Add(1)
}
go func() {
if err := func() error {
defer func() {
if t.ensureProcessSessionTickets != nil {
t.ensureProcessSessionTickets.Done()
}
}()
hsConn, err := service.Dial(t.hsAddr)
if err != nil {
return err
}
client := s2apb.NewS2AServiceClient(hsConn)
ctx, cancel := context.WithTimeout(context.Background(), sessionTimeout)
defer cancel()
session, err := client.SetUpSession(ctx)
if err != nil {
return err
}
defer func() {
if err := session.CloseSend(); err != nil {
grpclog.Error(err)
}
}()
return t.writeTicketsToStream(session, sessionTickets)
}(); err != nil {
grpclog.Errorf("failed to send resumption tickets to S2A with identity: %v, %v",
t.localIdentity, err)
}
callComplete <- true
close(callComplete)
}()
}
// writeTicketsToStream writes the given session tickets to the given stream.
func (t *ticketSender) writeTicketsToStream(stream ticketStream, sessionTickets [][]byte) error {
if err := stream.Send(
&s2apb.SessionReq{
ReqOneof: &s2apb.SessionReq_ResumptionTicket{
ResumptionTicket: &s2apb.ResumptionTicketReq{
InBytes: sessionTickets,
ConnectionId: t.connectionID,
LocalIdentity: t.localIdentity,
},
},
AuthMechanisms: t.getAuthMechanisms(),
},
); err != nil {
return err
}
sessionResp, err := stream.Recv()
if err != nil {
return err
}
if sessionResp.GetStatus().GetCode() != uint32(codes.OK) {
return fmt.Errorf("s2a session ticket response had error status: %v, %v",
sessionResp.GetStatus().GetCode(), sessionResp.GetStatus().GetDetails())
}
return nil
}
func (t *ticketSender) getAuthMechanisms() []*s2apb.AuthenticationMechanism {
if t.tokenManager == nil {
return nil
}
// First handle the special case when no local identity has been provided
// by the application. In this case, an AuthenticationMechanism with no local
// identity will be sent.
if t.localIdentity == nil {
token, err := t.tokenManager.DefaultToken()
if err != nil {
grpclog.Infof("unable to get token for empty local identity: %v", err)
return nil
}
return []*s2apb.AuthenticationMechanism{
{
MechanismOneof: &s2apb.AuthenticationMechanism_Token{
Token: token,
},
},
}
}
// Next, handle the case where the application (or the S2A) has specified
// a local identity.
token, err := t.tokenManager.Token(t.localIdentity)
if err != nil {
grpclog.Infof("unable to get token for local identity %v: %v", t.localIdentity, err)
return nil
}
return []*s2apb.AuthenticationMechanism{
{
Identity: t.localIdentity,
MechanismOneof: &s2apb.AuthenticationMechanism_Token{
Token: token,
},
},
}
}

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/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package tokenmanager provides tokens for authenticating to S2A.
package tokenmanager
import (
"fmt"
"os"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
)
const (
s2aAccessTokenEnvironmentVariable = "S2A_ACCESS_TOKEN"
)
// AccessTokenManager manages tokens for authenticating to S2A.
type AccessTokenManager interface {
// DefaultToken returns a token that an application with no specified local
// identity must use to authenticate to S2A.
DefaultToken() (token string, err error)
// Token returns a token that an application with local identity equal to
// identity must use to authenticate to S2A.
Token(identity *commonpb.Identity) (token string, err error)
}
type singleTokenAccessTokenManager struct {
token string
}
// NewSingleTokenAccessTokenManager returns a new AccessTokenManager instance
// that will always manage the same token.
//
// The token to be managed is read from the s2aAccessTokenEnvironmentVariable
// environment variable. If this environment variable is not set, then this
// function returns an error.
func NewSingleTokenAccessTokenManager() (AccessTokenManager, error) {
token, variableExists := os.LookupEnv(s2aAccessTokenEnvironmentVariable)
if !variableExists {
return nil, fmt.Errorf("%s environment variable is not set", s2aAccessTokenEnvironmentVariable)
}
return &singleTokenAccessTokenManager{token: token}, nil
}
// DefaultToken always returns the token managed by the
// singleTokenAccessTokenManager.
func (m *singleTokenAccessTokenManager) DefaultToken() (string, error) {
return m.token, nil
}
// Token always returns the token managed by the singleTokenAccessTokenManager.
func (m *singleTokenAccessTokenManager) Token(*commonpb.Identity) (string, error) {
return m.token, nil
}

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**This directory has the implementation of the S2Av2's gRPC-Go client libraries**

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/*
*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package certverifier offloads verifications to S2Av2.
package certverifier
import (
"crypto/x509"
"fmt"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
s2av2pb "github.com/google/s2a-go/internal/proto/v2/s2a_go_proto"
)
// VerifyClientCertificateChain builds a SessionReq, sends it to S2Av2 and
// receives a SessionResp.
func VerifyClientCertificateChain(verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode, cstream s2av2pb.S2AService_SetUpSessionClient) func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
return func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
// Offload verification to S2Av2.
if grpclog.V(1) {
grpclog.Infof("Sending request to S2Av2 for client peer cert chain validation.")
}
if err := cstream.Send(&s2av2pb.SessionReq{
ReqOneof: &s2av2pb.SessionReq_ValidatePeerCertificateChainReq{
ValidatePeerCertificateChainReq: &s2av2pb.ValidatePeerCertificateChainReq{
Mode: verificationMode,
PeerOneof: &s2av2pb.ValidatePeerCertificateChainReq_ClientPeer_{
ClientPeer: &s2av2pb.ValidatePeerCertificateChainReq_ClientPeer{
CertificateChain: rawCerts,
},
},
},
},
}); err != nil {
grpclog.Infof("Failed to send request to S2Av2 for client peer cert chain validation.")
return err
}
// Get the response from S2Av2.
resp, err := cstream.Recv()
if err != nil {
grpclog.Infof("Failed to receive client peer cert chain validation response from S2Av2.")
return err
}
// Parse the response.
if (resp.GetStatus() != nil) && (resp.GetStatus().Code != uint32(codes.OK)) {
return fmt.Errorf("failed to offload client cert verification to S2A: %d, %v", resp.GetStatus().Code, resp.GetStatus().Details)
}
if resp.GetValidatePeerCertificateChainResp().ValidationResult != s2av2pb.ValidatePeerCertificateChainResp_SUCCESS {
return fmt.Errorf("client cert verification failed: %v", resp.GetValidatePeerCertificateChainResp().ValidationDetails)
}
return nil
}
}
// VerifyServerCertificateChain builds a SessionReq, sends it to S2Av2 and
// receives a SessionResp.
func VerifyServerCertificateChain(hostname string, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode, cstream s2av2pb.S2AService_SetUpSessionClient) func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
return func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
// Offload verification to S2Av2.
if grpclog.V(1) {
grpclog.Infof("Sending request to S2Av2 for server peer cert chain validation.")
}
if err := cstream.Send(&s2av2pb.SessionReq{
ReqOneof: &s2av2pb.SessionReq_ValidatePeerCertificateChainReq{
ValidatePeerCertificateChainReq: &s2av2pb.ValidatePeerCertificateChainReq{
Mode: verificationMode,
PeerOneof: &s2av2pb.ValidatePeerCertificateChainReq_ServerPeer_{
ServerPeer: &s2av2pb.ValidatePeerCertificateChainReq_ServerPeer{
CertificateChain: rawCerts,
ServerHostname: hostname,
},
},
},
},
}); err != nil {
grpclog.Infof("Failed to send request to S2Av2 for server peer cert chain validation.")
return err
}
// Get the response from S2Av2.
resp, err := cstream.Recv()
if err != nil {
grpclog.Infof("Failed to receive server peer cert chain validation response from S2Av2.")
return err
}
// Parse the response.
if (resp.GetStatus() != nil) && (resp.GetStatus().Code != uint32(codes.OK)) {
return fmt.Errorf("failed to offload server cert verification to S2A: %d, %v", resp.GetStatus().Code, resp.GetStatus().Details)
}
if resp.GetValidatePeerCertificateChainResp().ValidationResult != s2av2pb.ValidatePeerCertificateChainResp_SUCCESS {
return fmt.Errorf("server cert verification failed: %v", resp.GetValidatePeerCertificateChainResp().ValidationDetails)
}
return nil
}
}

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/*
*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package remotesigner offloads private key operations to S2Av2.
package remotesigner
import (
"crypto"
"crypto/rsa"
"crypto/x509"
"fmt"
"io"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
s2av2pb "github.com/google/s2a-go/internal/proto/v2/s2a_go_proto"
)
// remoteSigner implementes the crypto.Signer interface.
type remoteSigner struct {
leafCert *x509.Certificate
cstream s2av2pb.S2AService_SetUpSessionClient
}
// New returns an instance of RemoteSigner, an implementation of the
// crypto.Signer interface.
func New(leafCert *x509.Certificate, cstream s2av2pb.S2AService_SetUpSessionClient) crypto.Signer {
return &remoteSigner{leafCert, cstream}
}
func (s *remoteSigner) Public() crypto.PublicKey {
return s.leafCert.PublicKey
}
func (s *remoteSigner) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) (signature []byte, err error) {
signatureAlgorithm, err := getSignatureAlgorithm(opts, s.leafCert)
if err != nil {
return nil, err
}
req, err := getSignReq(signatureAlgorithm, digest)
if err != nil {
return nil, err
}
if grpclog.V(1) {
grpclog.Infof("Sending request to S2Av2 for signing operation.")
}
if err := s.cstream.Send(&s2av2pb.SessionReq{
ReqOneof: &s2av2pb.SessionReq_OffloadPrivateKeyOperationReq{
OffloadPrivateKeyOperationReq: req,
},
}); err != nil {
grpclog.Infof("Failed to send request to S2Av2 for signing operation.")
return nil, err
}
resp, err := s.cstream.Recv()
if err != nil {
grpclog.Infof("Failed to receive signing operation response from S2Av2.")
return nil, err
}
if (resp.GetStatus() != nil) && (resp.GetStatus().Code != uint32(codes.OK)) {
return nil, fmt.Errorf("failed to offload signing with private key to S2A: %d, %v", resp.GetStatus().Code, resp.GetStatus().Details)
}
return resp.GetOffloadPrivateKeyOperationResp().GetOutBytes(), nil
}
// getCert returns the leafCert field in s.
func (s *remoteSigner) getCert() *x509.Certificate {
return s.leafCert
}
// getStream returns the cstream field in s.
func (s *remoteSigner) getStream() s2av2pb.S2AService_SetUpSessionClient {
return s.cstream
}
func getSignReq(signatureAlgorithm s2av2pb.SignatureAlgorithm, digest []byte) (*s2av2pb.OffloadPrivateKeyOperationReq, error) {
if (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA256) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP256R1_SHA256) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA256) {
return &s2av2pb.OffloadPrivateKeyOperationReq{
Operation: s2av2pb.OffloadPrivateKeyOperationReq_SIGN,
SignatureAlgorithm: signatureAlgorithm,
InBytes: &s2av2pb.OffloadPrivateKeyOperationReq_Sha256Digest{
Sha256Digest: digest,
},
}, nil
} else if (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA384) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP384R1_SHA384) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA384) {
return &s2av2pb.OffloadPrivateKeyOperationReq{
Operation: s2av2pb.OffloadPrivateKeyOperationReq_SIGN,
SignatureAlgorithm: signatureAlgorithm,
InBytes: &s2av2pb.OffloadPrivateKeyOperationReq_Sha384Digest{
Sha384Digest: digest,
},
}, nil
} else if (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA512) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP521R1_SHA512) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA512) || (signatureAlgorithm == s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ED25519) {
return &s2av2pb.OffloadPrivateKeyOperationReq{
Operation: s2av2pb.OffloadPrivateKeyOperationReq_SIGN,
SignatureAlgorithm: signatureAlgorithm,
InBytes: &s2av2pb.OffloadPrivateKeyOperationReq_Sha512Digest{
Sha512Digest: digest,
},
}, nil
} else {
return nil, fmt.Errorf("unknown signature algorithm: %v", signatureAlgorithm)
}
}
// getSignatureAlgorithm returns the signature algorithm that S2A must use when
// performing a signing operation that has been offloaded by an application
// using the crypto/tls libraries.
func getSignatureAlgorithm(opts crypto.SignerOpts, leafCert *x509.Certificate) (s2av2pb.SignatureAlgorithm, error) {
if opts == nil || leafCert == nil {
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_UNSPECIFIED, fmt.Errorf("unknown signature algorithm")
}
switch leafCert.PublicKeyAlgorithm {
case x509.RSA:
if rsaPSSOpts, ok := opts.(*rsa.PSSOptions); ok {
return rsaPSSAlgorithm(rsaPSSOpts)
}
return rsaPPKCS1Algorithm(opts)
case x509.ECDSA:
return ecdsaAlgorithm(opts)
case x509.Ed25519:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ED25519, nil
default:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_UNSPECIFIED, fmt.Errorf("unknown signature algorithm: %q", leafCert.PublicKeyAlgorithm)
}
}
func rsaPSSAlgorithm(opts *rsa.PSSOptions) (s2av2pb.SignatureAlgorithm, error) {
switch opts.HashFunc() {
case crypto.SHA256:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA256, nil
case crypto.SHA384:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA384, nil
case crypto.SHA512:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PSS_RSAE_SHA512, nil
default:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_UNSPECIFIED, fmt.Errorf("unknown signature algorithm")
}
}
func rsaPPKCS1Algorithm(opts crypto.SignerOpts) (s2av2pb.SignatureAlgorithm, error) {
switch opts.HashFunc() {
case crypto.SHA256:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA256, nil
case crypto.SHA384:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA384, nil
case crypto.SHA512:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_RSA_PKCS1_SHA512, nil
default:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_UNSPECIFIED, fmt.Errorf("unknown signature algorithm")
}
}
func ecdsaAlgorithm(opts crypto.SignerOpts) (s2av2pb.SignatureAlgorithm, error) {
switch opts.HashFunc() {
case crypto.SHA256:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP256R1_SHA256, nil
case crypto.SHA384:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP384R1_SHA384, nil
case crypto.SHA512:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_ECDSA_SECP521R1_SHA512, nil
default:
return s2av2pb.SignatureAlgorithm_S2A_SSL_SIGN_UNSPECIFIED, fmt.Errorf("unknown signature algorithm")
}
}

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-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/remotesigner/testdata/client_key.pem generated vendored Normal file
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@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

BIN
vendor/github.com/google/s2a-go/internal/v2/remotesigner/testdata/server_cert.der generated vendored Normal file
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Binary file not shown.

24
vendor/github.com/google/s2a-go/internal/v2/remotesigner/testdata/server_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/remotesigner/testdata/server_key.pem generated vendored Normal file
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@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

311
vendor/github.com/google/s2a-go/internal/v2/s2av2.go generated vendored Normal file
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@ -0,0 +1,311 @@
/*
*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package v2 provides the S2Av2 transport credentials used by a gRPC
// application.
package v2
import (
"context"
"crypto/tls"
"errors"
"flag"
"net"
"time"
"github.com/golang/protobuf/proto"
"github.com/google/s2a-go/fallback"
"github.com/google/s2a-go/internal/handshaker/service"
"github.com/google/s2a-go/internal/tokenmanager"
"github.com/google/s2a-go/internal/v2/tlsconfigstore"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/grpclog"
commonpbv1 "github.com/google/s2a-go/internal/proto/common_go_proto"
s2av2pb "github.com/google/s2a-go/internal/proto/v2/s2a_go_proto"
)
const (
s2aSecurityProtocol = "tls"
)
var S2ATimeout = flag.Duration("s2a_timeout", 3*time.Second, "Timeout enforced on the connection to the S2A service for handshake.")
type s2av2TransportCreds struct {
info *credentials.ProtocolInfo
isClient bool
serverName string
s2av2Address string
tokenManager *tokenmanager.AccessTokenManager
// localIdentity should only be used by the client.
localIdentity *commonpbv1.Identity
// localIdentities should only be used by the server.
localIdentities []*commonpbv1.Identity
verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode
fallbackClientHandshake fallback.ClientHandshake
}
// NewClientCreds returns a client-side transport credentials object that uses
// the S2Av2 to establish a secure connection with a server.
func NewClientCreds(s2av2Address string, localIdentity *commonpbv1.Identity, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode, fallbackClientHandshakeFunc fallback.ClientHandshake) (credentials.TransportCredentials, error) {
// Create an AccessTokenManager instance to use to authenticate to S2Av2.
accessTokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
creds := &s2av2TransportCreds{
info: &credentials.ProtocolInfo{
SecurityProtocol: s2aSecurityProtocol,
},
isClient: true,
serverName: "",
s2av2Address: s2av2Address,
localIdentity: localIdentity,
verificationMode: verificationMode,
fallbackClientHandshake: fallbackClientHandshakeFunc,
}
if err != nil {
creds.tokenManager = nil
} else {
creds.tokenManager = &accessTokenManager
}
if grpclog.V(1) {
grpclog.Info("Created client S2Av2 transport credentials.")
}
return creds, nil
}
// NewServerCreds returns a server-side transport credentials object that uses
// the S2Av2 to establish a secure connection with a client.
func NewServerCreds(s2av2Address string, localIdentities []*commonpbv1.Identity, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode) (credentials.TransportCredentials, error) {
// Create an AccessTokenManager instance to use to authenticate to S2Av2.
accessTokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
creds := &s2av2TransportCreds{
info: &credentials.ProtocolInfo{
SecurityProtocol: s2aSecurityProtocol,
},
isClient: false,
s2av2Address: s2av2Address,
localIdentities: localIdentities,
verificationMode: verificationMode,
}
if err != nil {
creds.tokenManager = nil
} else {
creds.tokenManager = &accessTokenManager
}
if grpclog.V(1) {
grpclog.Info("Created server S2Av2 transport credentials.")
}
return creds, nil
}
// ClientHandshake performs a client-side mTLS handshake using the S2Av2.
func (c *s2av2TransportCreds) ClientHandshake(ctx context.Context, serverAuthority string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
if !c.isClient {
return nil, nil, errors.New("client handshake called using server transport credentials")
}
// Remove the port from serverAuthority.
serverName := removeServerNamePort(serverAuthority)
timeoutCtx, cancel := context.WithTimeout(ctx, *S2ATimeout)
defer cancel()
cstream, err := createStream(timeoutCtx, c.s2av2Address)
if err != nil {
grpclog.Infof("Failed to connect to S2Av2: %v", err)
if c.fallbackClientHandshake != nil {
return c.fallbackClientHandshake(ctx, serverAuthority, rawConn, err)
}
return nil, nil, err
}
defer cstream.CloseSend()
if grpclog.V(1) {
grpclog.Infof("Connected to S2Av2.")
}
var config *tls.Config
var tokenManager tokenmanager.AccessTokenManager
if c.tokenManager == nil {
tokenManager = nil
} else {
tokenManager = *c.tokenManager
}
if c.serverName == "" {
config, err = tlsconfigstore.GetTLSConfigurationForClient(serverName, cstream, tokenManager, c.localIdentity, c.verificationMode)
if err != nil {
grpclog.Info("Failed to get client TLS config from S2Av2: %v", err)
if c.fallbackClientHandshake != nil {
return c.fallbackClientHandshake(ctx, serverAuthority, rawConn, err)
}
return nil, nil, err
}
} else {
config, err = tlsconfigstore.GetTLSConfigurationForClient(c.serverName, cstream, tokenManager, c.localIdentity, c.verificationMode)
if err != nil {
grpclog.Info("Failed to get client TLS config from S2Av2: %v", err)
if c.fallbackClientHandshake != nil {
return c.fallbackClientHandshake(ctx, serverAuthority, rawConn, err)
}
return nil, nil, err
}
}
if grpclog.V(1) {
grpclog.Infof("Got client TLS config from S2Av2.")
}
creds := credentials.NewTLS(config)
conn, authInfo, err := creds.ClientHandshake(ctx, serverName, rawConn)
if err != nil {
grpclog.Infof("Failed to do client handshake using S2Av2: %v", err)
if c.fallbackClientHandshake != nil {
return c.fallbackClientHandshake(ctx, serverAuthority, rawConn, err)
}
return nil, nil, err
}
grpclog.Infof("Successfully done client handshake using S2Av2 to: %s", serverName)
return conn, authInfo, err
}
// ServerHandshake performs a server-side mTLS handshake using the S2Av2.
func (c *s2av2TransportCreds) ServerHandshake(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
if c.isClient {
return nil, nil, errors.New("server handshake called using client transport credentials")
}
ctx, cancel := context.WithTimeout(context.Background(), *S2ATimeout)
defer cancel()
cstream, err := createStream(ctx, c.s2av2Address)
if err != nil {
grpclog.Infof("Failed to connect to S2Av2: %v", err)
return nil, nil, err
}
defer cstream.CloseSend()
if grpclog.V(1) {
grpclog.Infof("Connected to S2Av2.")
}
var tokenManager tokenmanager.AccessTokenManager
if c.tokenManager == nil {
tokenManager = nil
} else {
tokenManager = *c.tokenManager
}
config, err := tlsconfigstore.GetTLSConfigurationForServer(cstream, tokenManager, c.localIdentities, c.verificationMode)
if err != nil {
grpclog.Infof("Failed to get server TLS config from S2Av2: %v", err)
return nil, nil, err
}
if grpclog.V(1) {
grpclog.Infof("Got server TLS config from S2Av2.")
}
creds := credentials.NewTLS(config)
return creds.ServerHandshake(rawConn)
}
// Info returns protocol info of s2av2TransportCreds.
func (c *s2av2TransportCreds) Info() credentials.ProtocolInfo {
return *c.info
}
// Clone makes a deep copy of s2av2TransportCreds.
func (c *s2av2TransportCreds) Clone() credentials.TransportCredentials {
info := *c.info
serverName := c.serverName
fallbackClientHandshake := c.fallbackClientHandshake
s2av2Address := c.s2av2Address
var tokenManager tokenmanager.AccessTokenManager
if c.tokenManager == nil {
tokenManager = nil
} else {
tokenManager = *c.tokenManager
}
verificationMode := c.verificationMode
var localIdentity *commonpbv1.Identity
if c.localIdentity != nil {
localIdentity = proto.Clone(c.localIdentity).(*commonpbv1.Identity)
}
var localIdentities []*commonpbv1.Identity
if c.localIdentities != nil {
localIdentities = make([]*commonpbv1.Identity, len(c.localIdentities))
for i, localIdentity := range c.localIdentities {
localIdentities[i] = proto.Clone(localIdentity).(*commonpbv1.Identity)
}
}
creds := &s2av2TransportCreds{
info: &info,
isClient: c.isClient,
serverName: serverName,
fallbackClientHandshake: fallbackClientHandshake,
s2av2Address: s2av2Address,
localIdentity: localIdentity,
localIdentities: localIdentities,
verificationMode: verificationMode,
}
if c.tokenManager == nil {
creds.tokenManager = nil
} else {
creds.tokenManager = &tokenManager
}
return creds
}
// NewClientTLSConfig returns a tls.Config instance that uses S2Av2 to establish a TLS connection as
// a client. The tls.Config MUST only be used to establish a single TLS connection.
func NewClientTLSConfig(
ctx context.Context,
s2av2Address string,
tokenManager tokenmanager.AccessTokenManager,
verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode,
serverName string) (*tls.Config, error) {
cstream, err := createStream(ctx, s2av2Address)
if err != nil {
grpclog.Infof("Failed to connect to S2Av2: %v", err)
return nil, err
}
return tlsconfigstore.GetTLSConfigurationForClient(removeServerNamePort(serverName), cstream, tokenManager, nil, verificationMode)
}
// OverrideServerName sets the ServerName in the s2av2TransportCreds protocol
// info. The ServerName MUST be a hostname.
func (c *s2av2TransportCreds) OverrideServerName(serverNameOverride string) error {
serverName := removeServerNamePort(serverNameOverride)
c.info.ServerName = serverName
c.serverName = serverName
return nil
}
// Remove the trailing port from server name.
func removeServerNamePort(serverName string) string {
name, _, err := net.SplitHostPort(serverName)
if err != nil {
name = serverName
}
return name
}
func createStream(ctx context.Context, s2av2Address string) (s2av2pb.S2AService_SetUpSessionClient, error) {
// TODO(rmehta19): Consider whether to close the connection to S2Av2.
conn, err := service.Dial(s2av2Address)
if err != nil {
return nil, err
}
client := s2av2pb.NewS2AServiceClient(conn)
return client.SetUpSession(ctx, []grpc.CallOption{}...)
}

24
vendor/github.com/google/s2a-go/internal/v2/testdata/client_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----
MIID8TCCAtmgAwIBAgIUKXNlBRVe6UepjQUijIFPZBd/4qYwDQYJKoZIhvcNAQEL
BQAwgYcxCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJDQTESMBAGA1UEBwwJU3Vubnl2
YWxlMRAwDgYDVQQKDAdDb21wYW55MREwDwYDVQQLDAhEaXZpc2lvbjEWMBQGA1UE
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MjIwNTMxMjAwMzE1WhcNNDIwNTI2MjAwMzE1WjCBhzELMAkGA1UEBhMCVVMxCzAJ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0h/lrnggbIGvx4ej0WklMB8GA1UdIwQYMBaAFKhAU4nu0h/lrnggbIGvx4ej0Wkl
MA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAE/6NghzQ5fu6yR6
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X20rs2WZbAcAiUa3nmy8OKYw435vmpj8gp39WYbX/Yx9TymrFFbVY92wYn+quTco
pKklVz0=
-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/testdata/client_key.pem generated vendored Normal file
View file

@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

24
vendor/github.com/google/s2a-go/internal/v2/testdata/server_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/testdata/server_key.pem generated vendored Normal file
View file

@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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a+EMErht0pVCbIhZ6FF4foPAqia0wAJVx14mm+G80kNBp5jE/NnleEsE3KcO7nBb
hg8gLn+x7bk81JZ0TDrzBYkCgYEAuQKluv47SeF3tSScTfKLPpvcKCWmxe1uutkQ
7JShPhVioyOMNb39jnYBOWbjkm4d4QgqRuiytSR0oi3QI+Ziy5EYMyNn713qAk9j
r2TJZDDPDKnBW+zt4YI4EohWMXk3JRUW4XDKggjjwJQA7bZ812TtHHvP/xoThfG7
eSNb3eECgYBw6ssgCtMrdvQiEmjKVX/9yI38mvC2kSGyzbrQnGUfgqRGomRpeZuD
B5E3kysA4td5pT5lvcLgSW0TbOz+YbiriXjwOihPIelCvc9gE2eOUI71/byUWPFz
7u5F/xQ4NaGr5suLF+lBC6h7pSbM4El9lIHQAQadpuEdzHqrw+hs3g==
-----END RSA PRIVATE KEY-----

24
vendor/github.com/google/s2a-go/internal/v2/tlsconfigstore/testdata/client_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----
MIID8TCCAtmgAwIBAgIUKXNlBRVe6UepjQUijIFPZBd/4qYwDQYJKoZIhvcNAQEL
BQAwgYcxCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJDQTESMBAGA1UEBwwJU3Vubnl2
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a1ozEHVW6cOAbHbnwAR8tkSgZ/t42QIA2k77HWU1Jh2xiEIsJivo3imm4/kZWuR0
OqPh7MhzxpR/hvNwpI5mJsAVBWFMa5KtecFZLnyZtwHylrRN1QXzuLrOxuKFufK3
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0h/lrnggbIGvx4ej0WklMB8GA1UdIwQYMBaAFKhAU4nu0h/lrnggbIGvx4ej0Wkl
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X20rs2WZbAcAiUa3nmy8OKYw435vmpj8gp39WYbX/Yx9TymrFFbVY92wYn+quTco
pKklVz0=
-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/tlsconfigstore/testdata/client_key.pem generated vendored Normal file
View file

@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

24
vendor/github.com/google/s2a-go/internal/v2/tlsconfigstore/testdata/server_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/internal/v2/tlsconfigstore/testdata/server_key.pem generated vendored Normal file
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@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

403
vendor/github.com/google/s2a-go/internal/v2/tlsconfigstore/tlsconfigstore.go generated vendored Normal file
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@ -0,0 +1,403 @@
/*
*
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package tlsconfigstore offloads operations to S2Av2.
package tlsconfigstore
import (
"crypto/tls"
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"github.com/google/s2a-go/internal/tokenmanager"
"github.com/google/s2a-go/internal/v2/certverifier"
"github.com/google/s2a-go/internal/v2/remotesigner"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
commonpbv1 "github.com/google/s2a-go/internal/proto/common_go_proto"
commonpb "github.com/google/s2a-go/internal/proto/v2/common_go_proto"
s2av2pb "github.com/google/s2a-go/internal/proto/v2/s2a_go_proto"
)
const (
// HTTP/2
h2 = "h2"
)
// GetTLSConfigurationForClient returns a tls.Config instance for use by a client application.
func GetTLSConfigurationForClient(serverHostname string, cstream s2av2pb.S2AService_SetUpSessionClient, tokenManager tokenmanager.AccessTokenManager, localIdentity *commonpbv1.Identity, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode) (*tls.Config, error) {
authMechanisms := getAuthMechanisms(tokenManager, []*commonpbv1.Identity{localIdentity})
if grpclog.V(1) {
grpclog.Infof("Sending request to S2Av2 for client TLS config.")
}
// Send request to S2Av2 for config.
if err := cstream.Send(&s2av2pb.SessionReq{
LocalIdentity: localIdentity,
AuthenticationMechanisms: authMechanisms,
ReqOneof: &s2av2pb.SessionReq_GetTlsConfigurationReq{
GetTlsConfigurationReq: &s2av2pb.GetTlsConfigurationReq{
ConnectionSide: commonpb.ConnectionSide_CONNECTION_SIDE_CLIENT,
},
},
}); err != nil {
grpclog.Infof("Failed to send request to S2Av2 for client TLS config")
return nil, err
}
// Get the response containing config from S2Av2.
resp, err := cstream.Recv()
if err != nil {
grpclog.Infof("Failed to receive client TLS config response from S2Av2.")
return nil, err
}
// TODO(rmehta19): Add unit test for this if statement.
if (resp.GetStatus() != nil) && (resp.GetStatus().Code != uint32(codes.OK)) {
return nil, fmt.Errorf("failed to get TLS configuration from S2A: %d, %v", resp.GetStatus().Code, resp.GetStatus().Details)
}
// Extract TLS configiguration from SessionResp.
tlsConfig := resp.GetGetTlsConfigurationResp().GetClientTlsConfiguration()
var cert tls.Certificate
for i, v := range tlsConfig.CertificateChain {
// Populate Certificates field.
block, _ := pem.Decode([]byte(v))
if block == nil {
return nil, errors.New("certificate in CertificateChain obtained from S2Av2 is empty")
}
x509Cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, err
}
cert.Certificate = append(cert.Certificate, x509Cert.Raw)
if i == 0 {
cert.Leaf = x509Cert
}
}
if len(tlsConfig.CertificateChain) > 0 {
cert.PrivateKey = remotesigner.New(cert.Leaf, cstream)
if cert.PrivateKey == nil {
return nil, errors.New("failed to retrieve Private Key from Remote Signer Library")
}
}
minVersion, maxVersion, err := getTLSMinMaxVersionsClient(tlsConfig)
if err != nil {
return nil, err
}
// Create mTLS credentials for client.
config := &tls.Config{
VerifyPeerCertificate: certverifier.VerifyServerCertificateChain(serverHostname, verificationMode, cstream),
ServerName: serverHostname,
InsecureSkipVerify: true, // NOLINT
ClientSessionCache: nil,
SessionTicketsDisabled: true,
MinVersion: minVersion,
MaxVersion: maxVersion,
NextProtos: []string{h2},
}
if len(tlsConfig.CertificateChain) > 0 {
config.Certificates = []tls.Certificate{cert}
}
return config, nil
}
// GetTLSConfigurationForServer returns a tls.Config instance for use by a server application.
func GetTLSConfigurationForServer(cstream s2av2pb.S2AService_SetUpSessionClient, tokenManager tokenmanager.AccessTokenManager, localIdentities []*commonpbv1.Identity, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode) (*tls.Config, error) {
return &tls.Config{
GetConfigForClient: ClientConfig(tokenManager, localIdentities, verificationMode, cstream),
}, nil
}
// ClientConfig builds a TLS config for a server to establish a secure
// connection with a client, based on SNI communicated during ClientHello.
// Ensures that server presents the correct certificate to establish a TLS
// connection.
func ClientConfig(tokenManager tokenmanager.AccessTokenManager, localIdentities []*commonpbv1.Identity, verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode, cstream s2av2pb.S2AService_SetUpSessionClient) func(chi *tls.ClientHelloInfo) (*tls.Config, error) {
return func(chi *tls.ClientHelloInfo) (*tls.Config, error) {
tlsConfig, err := getServerConfigFromS2Av2(tokenManager, localIdentities, chi.ServerName, cstream)
if err != nil {
return nil, err
}
var cert tls.Certificate
for i, v := range tlsConfig.CertificateChain {
// Populate Certificates field.
block, _ := pem.Decode([]byte(v))
if block == nil {
return nil, errors.New("certificate in CertificateChain obtained from S2Av2 is empty")
}
x509Cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, err
}
cert.Certificate = append(cert.Certificate, x509Cert.Raw)
if i == 0 {
cert.Leaf = x509Cert
}
}
cert.PrivateKey = remotesigner.New(cert.Leaf, cstream)
if cert.PrivateKey == nil {
return nil, errors.New("failed to retrieve Private Key from Remote Signer Library")
}
minVersion, maxVersion, err := getTLSMinMaxVersionsServer(tlsConfig)
if err != nil {
return nil, err
}
clientAuth := getTLSClientAuthType(tlsConfig)
var cipherSuites []uint16
cipherSuites = getCipherSuites(tlsConfig.Ciphersuites)
// Create mTLS credentials for server.
return &tls.Config{
Certificates: []tls.Certificate{cert},
VerifyPeerCertificate: certverifier.VerifyClientCertificateChain(verificationMode, cstream),
ClientAuth: clientAuth,
CipherSuites: cipherSuites,
SessionTicketsDisabled: true,
MinVersion: minVersion,
MaxVersion: maxVersion,
NextProtos: []string{h2},
}, nil
}
}
func getCipherSuites(tlsConfigCipherSuites []commonpb.Ciphersuite) []uint16 {
var tlsGoCipherSuites []uint16
for _, v := range tlsConfigCipherSuites {
s := getTLSCipherSuite(v)
if s != 0xffff {
tlsGoCipherSuites = append(tlsGoCipherSuites, s)
}
}
return tlsGoCipherSuites
}
func getTLSCipherSuite(tlsCipherSuite commonpb.Ciphersuite) uint16 {
switch tlsCipherSuite {
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
return tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
return tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256:
return tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_AES_128_GCM_SHA256:
return tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_AES_256_GCM_SHA384:
return tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
case commonpb.Ciphersuite_CIPHERSUITE_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256:
return tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
default:
return 0xffff
}
}
func getServerConfigFromS2Av2(tokenManager tokenmanager.AccessTokenManager, localIdentities []*commonpbv1.Identity, sni string, cstream s2av2pb.S2AService_SetUpSessionClient) (*s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration, error) {
authMechanisms := getAuthMechanisms(tokenManager, localIdentities)
var locID *commonpbv1.Identity
if localIdentities != nil {
locID = localIdentities[0]
}
if err := cstream.Send(&s2av2pb.SessionReq{
LocalIdentity: locID,
AuthenticationMechanisms: authMechanisms,
ReqOneof: &s2av2pb.SessionReq_GetTlsConfigurationReq{
GetTlsConfigurationReq: &s2av2pb.GetTlsConfigurationReq{
ConnectionSide: commonpb.ConnectionSide_CONNECTION_SIDE_SERVER,
Sni: sni,
},
},
}); err != nil {
return nil, err
}
resp, err := cstream.Recv()
if err != nil {
return nil, err
}
// TODO(rmehta19): Add unit test for this if statement.
if (resp.GetStatus() != nil) && (resp.GetStatus().Code != uint32(codes.OK)) {
return nil, fmt.Errorf("failed to get TLS configuration from S2A: %d, %v", resp.GetStatus().Code, resp.GetStatus().Details)
}
return resp.GetGetTlsConfigurationResp().GetServerTlsConfiguration(), nil
}
func getTLSClientAuthType(tlsConfig *s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration) tls.ClientAuthType {
var clientAuth tls.ClientAuthType
switch x := tlsConfig.RequestClientCertificate; x {
case s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration_DONT_REQUEST_CLIENT_CERTIFICATE:
clientAuth = tls.NoClientCert
case s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration_REQUEST_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
clientAuth = tls.RequestClientCert
case s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration_REQUEST_CLIENT_CERTIFICATE_AND_VERIFY:
// This case actually maps to tls.VerifyClientCertIfGiven. However this
// mapping triggers normal verification, followed by custom verification,
// specified in VerifyPeerCertificate. To bypass normal verification, and
// only do custom verification we set clientAuth to RequireAnyClientCert or
// RequestClientCert. See https://github.com/google/s2a-go/pull/43 for full
// discussion.
clientAuth = tls.RequireAnyClientCert
case s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_BUT_DONT_VERIFY:
clientAuth = tls.RequireAnyClientCert
case s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY:
// This case actually maps to tls.RequireAndVerifyClientCert. However this
// mapping triggers normal verification, followed by custom verification,
// specified in VerifyPeerCertificate. To bypass normal verification, and
// only do custom verification we set clientAuth to RequireAnyClientCert or
// RequestClientCert. See https://github.com/google/s2a-go/pull/43 for full
// discussion.
clientAuth = tls.RequireAnyClientCert
default:
clientAuth = tls.RequireAnyClientCert
}
return clientAuth
}
func getAuthMechanisms(tokenManager tokenmanager.AccessTokenManager, localIdentities []*commonpbv1.Identity) []*s2av2pb.AuthenticationMechanism {
if tokenManager == nil {
return nil
}
if len(localIdentities) == 0 {
token, err := tokenManager.DefaultToken()
if err != nil {
grpclog.Infof("Unable to get token for empty local identity: %v", err)
return nil
}
return []*s2av2pb.AuthenticationMechanism{
{
MechanismOneof: &s2av2pb.AuthenticationMechanism_Token{
Token: token,
},
},
}
}
var authMechanisms []*s2av2pb.AuthenticationMechanism
for _, localIdentity := range localIdentities {
if localIdentity == nil {
token, err := tokenManager.DefaultToken()
if err != nil {
grpclog.Infof("Unable to get default token for local identity %v: %v", localIdentity, err)
continue
}
authMechanisms = append(authMechanisms, &s2av2pb.AuthenticationMechanism{
Identity: localIdentity,
MechanismOneof: &s2av2pb.AuthenticationMechanism_Token{
Token: token,
},
})
} else {
token, err := tokenManager.Token(localIdentity)
if err != nil {
grpclog.Infof("Unable to get token for local identity %v: %v", localIdentity, err)
continue
}
authMechanisms = append(authMechanisms, &s2av2pb.AuthenticationMechanism{
Identity: localIdentity,
MechanismOneof: &s2av2pb.AuthenticationMechanism_Token{
Token: token,
},
})
}
}
return authMechanisms
}
// TODO(rmehta19): refactor switch statements into a helper function.
func getTLSMinMaxVersionsClient(tlsConfig *s2av2pb.GetTlsConfigurationResp_ClientTlsConfiguration) (uint16, uint16, error) {
// Map S2Av2 TLSVersion to consts defined in tls package.
var minVersion uint16
var maxVersion uint16
switch x := tlsConfig.MinTlsVersion; x {
case commonpb.TLSVersion_TLS_VERSION_1_0:
minVersion = tls.VersionTLS10
case commonpb.TLSVersion_TLS_VERSION_1_1:
minVersion = tls.VersionTLS11
case commonpb.TLSVersion_TLS_VERSION_1_2:
minVersion = tls.VersionTLS12
case commonpb.TLSVersion_TLS_VERSION_1_3:
minVersion = tls.VersionTLS13
default:
return minVersion, maxVersion, fmt.Errorf("S2Av2 provided invalid MinTlsVersion: %v", x)
}
switch x := tlsConfig.MaxTlsVersion; x {
case commonpb.TLSVersion_TLS_VERSION_1_0:
maxVersion = tls.VersionTLS10
case commonpb.TLSVersion_TLS_VERSION_1_1:
maxVersion = tls.VersionTLS11
case commonpb.TLSVersion_TLS_VERSION_1_2:
maxVersion = tls.VersionTLS12
case commonpb.TLSVersion_TLS_VERSION_1_3:
maxVersion = tls.VersionTLS13
default:
return minVersion, maxVersion, fmt.Errorf("S2Av2 provided invalid MaxTlsVersion: %v", x)
}
if minVersion > maxVersion {
return minVersion, maxVersion, errors.New("S2Av2 provided minVersion > maxVersion")
}
return minVersion, maxVersion, nil
}
func getTLSMinMaxVersionsServer(tlsConfig *s2av2pb.GetTlsConfigurationResp_ServerTlsConfiguration) (uint16, uint16, error) {
// Map S2Av2 TLSVersion to consts defined in tls package.
var minVersion uint16
var maxVersion uint16
switch x := tlsConfig.MinTlsVersion; x {
case commonpb.TLSVersion_TLS_VERSION_1_0:
minVersion = tls.VersionTLS10
case commonpb.TLSVersion_TLS_VERSION_1_1:
minVersion = tls.VersionTLS11
case commonpb.TLSVersion_TLS_VERSION_1_2:
minVersion = tls.VersionTLS12
case commonpb.TLSVersion_TLS_VERSION_1_3:
minVersion = tls.VersionTLS13
default:
return minVersion, maxVersion, fmt.Errorf("S2Av2 provided invalid MinTlsVersion: %v", x)
}
switch x := tlsConfig.MaxTlsVersion; x {
case commonpb.TLSVersion_TLS_VERSION_1_0:
maxVersion = tls.VersionTLS10
case commonpb.TLSVersion_TLS_VERSION_1_1:
maxVersion = tls.VersionTLS11
case commonpb.TLSVersion_TLS_VERSION_1_2:
maxVersion = tls.VersionTLS12
case commonpb.TLSVersion_TLS_VERSION_1_3:
maxVersion = tls.VersionTLS13
default:
return minVersion, maxVersion, fmt.Errorf("S2Av2 provided invalid MaxTlsVersion: %v", x)
}
if minVersion > maxVersion {
return minVersion, maxVersion, errors.New("S2Av2 provided minVersion > maxVersion")
}
return minVersion, maxVersion, nil
}

409
vendor/github.com/google/s2a-go/s2a.go generated vendored Normal file
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@ -0,0 +1,409 @@
/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package s2a provides the S2A transport credentials used by a gRPC
// application.
package s2a
import (
"context"
"crypto/tls"
"errors"
"fmt"
"net"
"sync"
"time"
"github.com/golang/protobuf/proto"
"github.com/google/s2a-go/fallback"
"github.com/google/s2a-go/internal/handshaker"
"github.com/google/s2a-go/internal/handshaker/service"
"github.com/google/s2a-go/internal/tokenmanager"
"github.com/google/s2a-go/internal/v2"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/grpclog"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
s2av2pb "github.com/google/s2a-go/internal/proto/v2/s2a_go_proto"
)
const (
s2aSecurityProtocol = "tls"
// defaultTimeout specifies the default server handshake timeout.
defaultTimeout = 30.0 * time.Second
)
// s2aTransportCreds are the transport credentials required for establishing
// a secure connection using the S2A. They implement the
// credentials.TransportCredentials interface.
type s2aTransportCreds struct {
info *credentials.ProtocolInfo
minTLSVersion commonpb.TLSVersion
maxTLSVersion commonpb.TLSVersion
// tlsCiphersuites contains the ciphersuites used in the S2A connection.
// Note that these are currently unconfigurable.
tlsCiphersuites []commonpb.Ciphersuite
// localIdentity should only be used by the client.
localIdentity *commonpb.Identity
// localIdentities should only be used by the server.
localIdentities []*commonpb.Identity
// targetIdentities should only be used by the client.
targetIdentities []*commonpb.Identity
isClient bool
s2aAddr string
ensureProcessSessionTickets *sync.WaitGroup
}
// NewClientCreds returns a client-side transport credentials object that uses
// the S2A to establish a secure connection with a server.
func NewClientCreds(opts *ClientOptions) (credentials.TransportCredentials, error) {
if opts == nil {
return nil, errors.New("nil client options")
}
var targetIdentities []*commonpb.Identity
for _, targetIdentity := range opts.TargetIdentities {
protoTargetIdentity, err := toProtoIdentity(targetIdentity)
if err != nil {
return nil, err
}
targetIdentities = append(targetIdentities, protoTargetIdentity)
}
localIdentity, err := toProtoIdentity(opts.LocalIdentity)
if err != nil {
return nil, err
}
if opts.EnableLegacyMode {
return &s2aTransportCreds{
info: &credentials.ProtocolInfo{
SecurityProtocol: s2aSecurityProtocol,
},
minTLSVersion: commonpb.TLSVersion_TLS1_3,
maxTLSVersion: commonpb.TLSVersion_TLS1_3,
tlsCiphersuites: []commonpb.Ciphersuite{
commonpb.Ciphersuite_AES_128_GCM_SHA256,
commonpb.Ciphersuite_AES_256_GCM_SHA384,
commonpb.Ciphersuite_CHACHA20_POLY1305_SHA256,
},
localIdentity: localIdentity,
targetIdentities: targetIdentities,
isClient: true,
s2aAddr: opts.S2AAddress,
ensureProcessSessionTickets: opts.EnsureProcessSessionTickets,
}, nil
}
verificationMode := getVerificationMode(opts.VerificationMode)
var fallbackFunc fallback.ClientHandshake
if opts.FallbackOpts != nil && opts.FallbackOpts.FallbackClientHandshakeFunc != nil {
fallbackFunc = opts.FallbackOpts.FallbackClientHandshakeFunc
}
return v2.NewClientCreds(opts.S2AAddress, localIdentity, verificationMode, fallbackFunc)
}
// NewServerCreds returns a server-side transport credentials object that uses
// the S2A to establish a secure connection with a client.
func NewServerCreds(opts *ServerOptions) (credentials.TransportCredentials, error) {
if opts == nil {
return nil, errors.New("nil server options")
}
var localIdentities []*commonpb.Identity
for _, localIdentity := range opts.LocalIdentities {
protoLocalIdentity, err := toProtoIdentity(localIdentity)
if err != nil {
return nil, err
}
localIdentities = append(localIdentities, protoLocalIdentity)
}
if opts.EnableLegacyMode {
return &s2aTransportCreds{
info: &credentials.ProtocolInfo{
SecurityProtocol: s2aSecurityProtocol,
},
minTLSVersion: commonpb.TLSVersion_TLS1_3,
maxTLSVersion: commonpb.TLSVersion_TLS1_3,
tlsCiphersuites: []commonpb.Ciphersuite{
commonpb.Ciphersuite_AES_128_GCM_SHA256,
commonpb.Ciphersuite_AES_256_GCM_SHA384,
commonpb.Ciphersuite_CHACHA20_POLY1305_SHA256,
},
localIdentities: localIdentities,
isClient: false,
s2aAddr: opts.S2AAddress,
}, nil
}
verificationMode := getVerificationMode(opts.VerificationMode)
return v2.NewServerCreds(opts.S2AAddress, localIdentities, verificationMode)
}
// ClientHandshake initiates a client-side TLS handshake using the S2A.
func (c *s2aTransportCreds) ClientHandshake(ctx context.Context, serverAuthority string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
if !c.isClient {
return nil, nil, errors.New("client handshake called using server transport credentials")
}
// Connect to the S2A.
hsConn, err := service.Dial(c.s2aAddr)
if err != nil {
grpclog.Infof("Failed to connect to S2A: %v", err)
return nil, nil, err
}
var cancel context.CancelFunc
ctx, cancel = context.WithCancel(ctx)
defer cancel()
opts := &handshaker.ClientHandshakerOptions{
MinTLSVersion: c.minTLSVersion,
MaxTLSVersion: c.maxTLSVersion,
TLSCiphersuites: c.tlsCiphersuites,
TargetIdentities: c.targetIdentities,
LocalIdentity: c.localIdentity,
TargetName: serverAuthority,
EnsureProcessSessionTickets: c.ensureProcessSessionTickets,
}
chs, err := handshaker.NewClientHandshaker(ctx, hsConn, rawConn, c.s2aAddr, opts)
if err != nil {
grpclog.Infof("Call to handshaker.NewClientHandshaker failed: %v", err)
return nil, nil, err
}
defer func() {
if err != nil {
if closeErr := chs.Close(); closeErr != nil {
grpclog.Infof("Close failed unexpectedly: %v", err)
err = fmt.Errorf("%v: close unexpectedly failed: %v", err, closeErr)
}
}
}()
secConn, authInfo, err := chs.ClientHandshake(context.Background())
if err != nil {
grpclog.Infof("Handshake failed: %v", err)
return nil, nil, err
}
return secConn, authInfo, nil
}
// ServerHandshake initiates a server-side TLS handshake using the S2A.
func (c *s2aTransportCreds) ServerHandshake(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
if c.isClient {
return nil, nil, errors.New("server handshake called using client transport credentials")
}
// Connect to the S2A.
hsConn, err := service.Dial(c.s2aAddr)
if err != nil {
grpclog.Infof("Failed to connect to S2A: %v", err)
return nil, nil, err
}
ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout)
defer cancel()
opts := &handshaker.ServerHandshakerOptions{
MinTLSVersion: c.minTLSVersion,
MaxTLSVersion: c.maxTLSVersion,
TLSCiphersuites: c.tlsCiphersuites,
LocalIdentities: c.localIdentities,
}
shs, err := handshaker.NewServerHandshaker(ctx, hsConn, rawConn, c.s2aAddr, opts)
if err != nil {
grpclog.Infof("Call to handshaker.NewServerHandshaker failed: %v", err)
return nil, nil, err
}
defer func() {
if err != nil {
if closeErr := shs.Close(); closeErr != nil {
grpclog.Infof("Close failed unexpectedly: %v", err)
err = fmt.Errorf("%v: close unexpectedly failed: %v", err, closeErr)
}
}
}()
secConn, authInfo, err := shs.ServerHandshake(context.Background())
if err != nil {
grpclog.Infof("Handshake failed: %v", err)
return nil, nil, err
}
return secConn, authInfo, nil
}
func (c *s2aTransportCreds) Info() credentials.ProtocolInfo {
return *c.info
}
func (c *s2aTransportCreds) Clone() credentials.TransportCredentials {
info := *c.info
var localIdentity *commonpb.Identity
if c.localIdentity != nil {
localIdentity = proto.Clone(c.localIdentity).(*commonpb.Identity)
}
var localIdentities []*commonpb.Identity
if c.localIdentities != nil {
localIdentities = make([]*commonpb.Identity, len(c.localIdentities))
for i, localIdentity := range c.localIdentities {
localIdentities[i] = proto.Clone(localIdentity).(*commonpb.Identity)
}
}
var targetIdentities []*commonpb.Identity
if c.targetIdentities != nil {
targetIdentities = make([]*commonpb.Identity, len(c.targetIdentities))
for i, targetIdentity := range c.targetIdentities {
targetIdentities[i] = proto.Clone(targetIdentity).(*commonpb.Identity)
}
}
return &s2aTransportCreds{
info: &info,
minTLSVersion: c.minTLSVersion,
maxTLSVersion: c.maxTLSVersion,
tlsCiphersuites: c.tlsCiphersuites,
localIdentity: localIdentity,
localIdentities: localIdentities,
targetIdentities: targetIdentities,
isClient: c.isClient,
s2aAddr: c.s2aAddr,
}
}
func (c *s2aTransportCreds) OverrideServerName(serverNameOverride string) error {
c.info.ServerName = serverNameOverride
return nil
}
// TLSClientConfigOptions specifies parameters for creating client TLS config.
type TLSClientConfigOptions struct {
// ServerName is required by s2a as the expected name when verifying the hostname found in server's certificate.
// tlsConfig, _ := factory.Build(ctx, &s2a.TLSClientConfigOptions{
// ServerName: "example.com",
// })
ServerName string
}
// TLSClientConfigFactory defines the interface for a client TLS config factory.
type TLSClientConfigFactory interface {
Build(ctx context.Context, opts *TLSClientConfigOptions) (*tls.Config, error)
}
// NewTLSClientConfigFactory returns an instance of s2aTLSClientConfigFactory.
func NewTLSClientConfigFactory(opts *ClientOptions) (TLSClientConfigFactory, error) {
if opts == nil {
return nil, fmt.Errorf("opts must be non-nil")
}
if opts.EnableLegacyMode {
return nil, fmt.Errorf("NewTLSClientConfigFactory only supports S2Av2")
}
tokenManager, err := tokenmanager.NewSingleTokenAccessTokenManager()
if err != nil {
// The only possible error is: access token not set in the environment,
// which is okay in environments other than serverless.
grpclog.Infof("Access token manager not initialized: %v", err)
return &s2aTLSClientConfigFactory{
s2av2Address: opts.S2AAddress,
tokenManager: nil,
verificationMode: getVerificationMode(opts.VerificationMode),
}, nil
}
return &s2aTLSClientConfigFactory{
s2av2Address: opts.S2AAddress,
tokenManager: tokenManager,
verificationMode: getVerificationMode(opts.VerificationMode),
}, nil
}
type s2aTLSClientConfigFactory struct {
s2av2Address string
tokenManager tokenmanager.AccessTokenManager
verificationMode s2av2pb.ValidatePeerCertificateChainReq_VerificationMode
}
func (f *s2aTLSClientConfigFactory) Build(
ctx context.Context, opts *TLSClientConfigOptions) (*tls.Config, error) {
serverName := ""
if opts != nil && opts.ServerName != "" {
serverName = opts.ServerName
}
return v2.NewClientTLSConfig(ctx, f.s2av2Address, f.tokenManager, f.verificationMode, serverName)
}
func getVerificationMode(verificationMode VerificationModeType) s2av2pb.ValidatePeerCertificateChainReq_VerificationMode {
switch verificationMode {
case ConnectToGoogle:
return s2av2pb.ValidatePeerCertificateChainReq_CONNECT_TO_GOOGLE
case Spiffe:
return s2av2pb.ValidatePeerCertificateChainReq_SPIFFE
default:
return s2av2pb.ValidatePeerCertificateChainReq_UNSPECIFIED
}
}
// NewS2ADialTLSContextFunc returns a dialer which establishes an MTLS connection using S2A.
// Example use with http.RoundTripper:
//
// dialTLSContext := s2a.NewS2aDialTLSContextFunc(&s2a.ClientOptions{
// S2AAddress: s2aAddress, // required
// })
// transport := http.DefaultTransport
// transport.DialTLSContext = dialTLSContext
func NewS2ADialTLSContextFunc(opts *ClientOptions) func(ctx context.Context, network, addr string) (net.Conn, error) {
return func(ctx context.Context, network, addr string) (net.Conn, error) {
fallback := func(err error) (net.Conn, error) {
if opts.FallbackOpts != nil && opts.FallbackOpts.FallbackDialer != nil &&
opts.FallbackOpts.FallbackDialer.Dialer != nil && opts.FallbackOpts.FallbackDialer.ServerAddr != "" {
fbDialer := opts.FallbackOpts.FallbackDialer
grpclog.Infof("fall back to dial: %s", fbDialer.ServerAddr)
fbConn, fbErr := fbDialer.Dialer.DialContext(ctx, network, fbDialer.ServerAddr)
if fbErr != nil {
return nil, fmt.Errorf("error fallback to %s: %v; S2A error: %w", fbDialer.ServerAddr, fbErr, err)
}
return fbConn, nil
}
return nil, err
}
factory, err := NewTLSClientConfigFactory(opts)
if err != nil {
grpclog.Infof("error creating S2A client config factory: %v", err)
return fallback(err)
}
serverName, _, err := net.SplitHostPort(addr)
if err != nil {
serverName = addr
}
timeoutCtx, cancel := context.WithTimeout(ctx, *v2.S2ATimeout)
defer cancel()
s2aTLSConfig, err := factory.Build(timeoutCtx, &TLSClientConfigOptions{
ServerName: serverName,
})
if err != nil {
grpclog.Infof("error building S2A TLS config: %v", err)
return fallback(err)
}
s2aDialer := &tls.Dialer{
Config: s2aTLSConfig,
}
c, err := s2aDialer.DialContext(ctx, network, addr)
if err != nil {
grpclog.Infof("error dialing with S2A to %s: %v", addr, err)
return fallback(err)
}
grpclog.Infof("success dialing MTLS to %s with S2A", addr)
return c, nil
}
}

197
vendor/github.com/google/s2a-go/s2a_options.go generated vendored Normal file
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@ -0,0 +1,197 @@
/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package s2a
import (
"crypto/tls"
"errors"
"sync"
"github.com/google/s2a-go/fallback"
s2apb "github.com/google/s2a-go/internal/proto/common_go_proto"
)
// Identity is the interface for S2A identities.
type Identity interface {
// Name returns the name of the identity.
Name() string
}
type spiffeID struct {
spiffeID string
}
func (s *spiffeID) Name() string { return s.spiffeID }
// NewSpiffeID creates a SPIFFE ID from id.
func NewSpiffeID(id string) Identity {
return &spiffeID{spiffeID: id}
}
type hostname struct {
hostname string
}
func (h *hostname) Name() string { return h.hostname }
// NewHostname creates a hostname from name.
func NewHostname(name string) Identity {
return &hostname{hostname: name}
}
type uid struct {
uid string
}
func (h *uid) Name() string { return h.uid }
// NewUID creates a UID from name.
func NewUID(name string) Identity {
return &uid{uid: name}
}
// VerificationModeType specifies the mode that S2A must use to verify the peer
// certificate chain.
type VerificationModeType int
// Three types of verification modes.
const (
Unspecified = iota
ConnectToGoogle
Spiffe
)
// ClientOptions contains the client-side options used to establish a secure
// channel using the S2A handshaker service.
type ClientOptions struct {
// TargetIdentities contains a list of allowed server identities. One of the
// target identities should match the peer identity in the handshake
// result; otherwise, the handshake fails.
TargetIdentities []Identity
// LocalIdentity is the local identity of the client application. If none is
// provided, then the S2A will choose the default identity, if one exists.
LocalIdentity Identity
// S2AAddress is the address of the S2A.
S2AAddress string
// EnsureProcessSessionTickets waits for all session tickets to be sent to
// S2A before a process completes.
//
// This functionality is crucial for processes that complete very soon after
// using S2A to establish a TLS connection, but it can be ignored for longer
// lived processes.
//
// Usage example:
// func main() {
// var ensureProcessSessionTickets sync.WaitGroup
// clientOpts := &s2a.ClientOptions{
// EnsureProcessSessionTickets: &ensureProcessSessionTickets,
// // Set other members.
// }
// creds, _ := s2a.NewClientCreds(clientOpts)
// conn, _ := grpc.Dial(serverAddr, grpc.WithTransportCredentials(creds))
// defer conn.Close()
//
// // Make RPC call.
//
// // The process terminates right after the RPC call ends.
// // ensureProcessSessionTickets can be used to ensure resumption
// // tickets are fully processed. If the process is long-lived, using
// // ensureProcessSessionTickets is not necessary.
// ensureProcessSessionTickets.Wait()
// }
EnsureProcessSessionTickets *sync.WaitGroup
// If true, enables the use of legacy S2Av1.
EnableLegacyMode bool
// VerificationMode specifies the mode that S2A must use to verify the
// peer certificate chain.
VerificationMode VerificationModeType
// Optional fallback after dialing with S2A fails.
FallbackOpts *FallbackOptions
}
// FallbackOptions prescribes the fallback logic that should be taken if the application fails to connect with S2A.
type FallbackOptions struct {
// FallbackClientHandshakeFunc is used to specify fallback behavior when calling s2a.NewClientCreds().
// It will be called by ClientHandshake function, after handshake with S2A fails.
// s2a.NewClientCreds() ignores the other FallbackDialer field.
FallbackClientHandshakeFunc fallback.ClientHandshake
// FallbackDialer is used to specify fallback behavior when calling s2a.NewS2aDialTLSContextFunc().
// It passes in a custom fallback dialer and server address to use after dialing with S2A fails.
// s2a.NewS2aDialTLSContextFunc() ignores the other FallbackClientHandshakeFunc field.
FallbackDialer *FallbackDialer
}
// FallbackDialer contains a fallback tls.Dialer and a server address to connect to.
type FallbackDialer struct {
// Dialer specifies a fallback tls.Dialer.
Dialer *tls.Dialer
// ServerAddr is used by Dialer to establish fallback connection.
ServerAddr string
}
// DefaultClientOptions returns the default client options.
func DefaultClientOptions(s2aAddress string) *ClientOptions {
return &ClientOptions{
S2AAddress: s2aAddress,
VerificationMode: ConnectToGoogle,
}
}
// ServerOptions contains the server-side options used to establish a secure
// channel using the S2A handshaker service.
type ServerOptions struct {
// LocalIdentities is the list of local identities that may be assumed by
// the server. If no local identity is specified, then the S2A chooses a
// default local identity, if one exists.
LocalIdentities []Identity
// S2AAddress is the address of the S2A.
S2AAddress string
// If true, enables the use of legacy S2Av1.
EnableLegacyMode bool
// VerificationMode specifies the mode that S2A must use to verify the
// peer certificate chain.
VerificationMode VerificationModeType
}
// DefaultServerOptions returns the default server options.
func DefaultServerOptions(s2aAddress string) *ServerOptions {
return &ServerOptions{
S2AAddress: s2aAddress,
VerificationMode: ConnectToGoogle,
}
}
func toProtoIdentity(identity Identity) (*s2apb.Identity, error) {
if identity == nil {
return nil, nil
}
switch id := identity.(type) {
case *spiffeID:
return &s2apb.Identity{IdentityOneof: &s2apb.Identity_SpiffeId{SpiffeId: id.Name()}}, nil
case *hostname:
return &s2apb.Identity{IdentityOneof: &s2apb.Identity_Hostname{Hostname: id.Name()}}, nil
case *uid:
return &s2apb.Identity{IdentityOneof: &s2apb.Identity_Uid{Uid: id.Name()}}, nil
default:
return nil, errors.New("unrecognized identity type")
}
}

79
vendor/github.com/google/s2a-go/s2a_utils.go generated vendored Normal file
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@ -0,0 +1,79 @@
/*
*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package s2a
import (
"context"
"errors"
commonpb "github.com/google/s2a-go/internal/proto/common_go_proto"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/peer"
)
// AuthInfo exposes security information from the S2A to the application.
type AuthInfo interface {
// AuthType returns the authentication type.
AuthType() string
// ApplicationProtocol returns the application protocol, e.g. "grpc".
ApplicationProtocol() string
// TLSVersion returns the TLS version negotiated during the handshake.
TLSVersion() commonpb.TLSVersion
// Ciphersuite returns the ciphersuite negotiated during the handshake.
Ciphersuite() commonpb.Ciphersuite
// PeerIdentity returns the authenticated identity of the peer.
PeerIdentity() *commonpb.Identity
// LocalIdentity returns the local identity of the application used during
// session setup.
LocalIdentity() *commonpb.Identity
// PeerCertFingerprint returns the SHA256 hash of the peer certificate used in
// the S2A handshake.
PeerCertFingerprint() []byte
// LocalCertFingerprint returns the SHA256 hash of the local certificate used
// in the S2A handshake.
LocalCertFingerprint() []byte
// IsHandshakeResumed returns true if a cached session was used to resume
// the handshake.
IsHandshakeResumed() bool
// SecurityLevel returns the security level of the connection.
SecurityLevel() credentials.SecurityLevel
}
// AuthInfoFromPeer extracts the authinfo.S2AAuthInfo object from the given
// peer, if it exists. This API should be used by gRPC clients after
// obtaining a peer object using the grpc.Peer() CallOption.
func AuthInfoFromPeer(p *peer.Peer) (AuthInfo, error) {
s2aAuthInfo, ok := p.AuthInfo.(AuthInfo)
if !ok {
return nil, errors.New("no S2AAuthInfo found in Peer")
}
return s2aAuthInfo, nil
}
// AuthInfoFromContext extracts the authinfo.S2AAuthInfo object from the given
// context, if it exists. This API should be used by gRPC server RPC handlers
// to get information about the peer. On the client-side, use the grpc.Peer()
// CallOption and the AuthInfoFromPeer function.
func AuthInfoFromContext(ctx context.Context) (AuthInfo, error) {
p, ok := peer.FromContext(ctx)
if !ok {
return nil, errors.New("no Peer found in Context")
}
return AuthInfoFromPeer(p)
}

24
vendor/github.com/google/s2a-go/testdata/client_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/testdata/client_key.pem generated vendored Normal file
View file

@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

24
vendor/github.com/google/s2a-go/testdata/server_cert.pem generated vendored Normal file
View file

@ -0,0 +1,24 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

27
vendor/github.com/google/s2a-go/testdata/server_key.pem generated vendored Normal file
View file

@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

52
vendor/github.com/googleapis/enterprise-certificate-proxy/client/client.go generated vendored
View file

@ -1,16 +1,28 @@
// Copyright 2022 Google LLC.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package client is a cross-platform client for the signer binary (a.k.a."EnterpriseCertSigner").
//
// Client is a cross-platform client for the signer binary (a.k.a."EnterpriseCertSigner").
// The signer binary is OS-specific, but exposes a standard set of APIs for the client to use.
package client
import (
"crypto"
"crypto/ecdsa"
"crypto/rsa"
"crypto/x509"
"encoding/gob"
"errors"
"fmt"
"io"
"net/rpc"
@ -67,14 +79,16 @@ func (k *Key) CertificateChain() [][]byte {
// Close closes the RPC connection and kills the signer subprocess.
// Call this to free up resources when the Key object is no longer needed.
func (k *Key) Close() error {
if err := k.client.Close(); err != nil {
return fmt.Errorf("failed to close RPC connection: %w", err)
}
if err := k.cmd.Process.Kill(); err != nil {
return fmt.Errorf("failed to kill signer process: %w", err)
}
if err := k.cmd.Wait(); err.Error() != "signal: killed" {
return fmt.Errorf("signer process was not killed: %w", err)
// Wait for cmd to exit and release resources. Since the process is forcefully killed, this
// will return a non-nil error (varies by OS), which we will ignore.
_ = k.cmd.Wait()
// The Pipes connecting the RPC client should have been closed when the signer subprocess was killed.
// Calling `k.client.Close()` before `k.cmd.Process.Kill()` or `k.cmd.Wait()` _will_ cause a segfault.
if err := k.client.Close(); err.Error() != "close |0: file already closed" {
return fmt.Errorf("failed to close RPC connection: %w", err)
}
return nil
}
@ -84,12 +98,19 @@ func (k *Key) Public() crypto.PublicKey {
return k.publicKey
}
// Sign signs a message by encrypting a message digest, using the specified signer options.
// Sign signs a message digest, using the specified signer options.
func (k *Key) Sign(_ io.Reader, digest []byte, opts crypto.SignerOpts) (signed []byte, err error) {
if opts != nil && opts.HashFunc() != 0 && len(digest) != opts.HashFunc().Size() {
return nil, fmt.Errorf("Digest length of %v bytes does not match Hash function size of %v bytes", len(digest), opts.HashFunc().Size())
}
err = k.client.Call(signAPI, SignArgs{Digest: digest, Opts: opts}, &signed)
return
}
// ErrCredUnavailable is a sentinel error that indicates ECP Cred is unavailable,
// possibly due to missing config or missing binary path.
var ErrCredUnavailable = errors.New("Cred is unavailable")
// Cred spawns a signer subprocess that listens on stdin/stdout to perform certificate
// related operations, including signing messages with the private key.
//
@ -103,6 +124,9 @@ func Cred(configFilePath string) (*Key, error) {
}
enterpriseCertSignerPath, err := util.LoadSignerBinaryPath(configFilePath)
if err != nil {
if errors.Is(err, util.ErrConfigUnavailable) {
return nil, ErrCredUnavailable
}
return nil, err
}
k := &Key{
@ -147,5 +171,15 @@ func Cred(configFilePath string) (*Key, error) {
return nil, fmt.Errorf("invalid public key type: %T", publicKey)
}
switch pub := k.publicKey.(type) {
case *rsa.PublicKey:
if pub.Size() < 256 {
return nil, fmt.Errorf("RSA modulus size is less than 2048 bits: %v", pub.Size()*8)
}
case *ecdsa.PublicKey:
default:
return nil, fmt.Errorf("unsupported public key type: %v", pub)
}
return k, nil
}

35
vendor/github.com/googleapis/enterprise-certificate-proxy/client/util/util.go generated vendored
View file

@ -1,17 +1,30 @@
// Copyright 2022 Google LLC.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package util provides helper functions for the client.
package util
import (
"encoding/json"
"errors"
"io/ioutil"
"io"
"os"
"os/user"
"path/filepath"
"runtime"
)
const configFileName = "enterprise_certificate_config.json"
const configFileName = "certificate_config.json"
// EnterpriseCertificateConfig contains parameters for initializing signer.
type EnterpriseCertificateConfig struct {
@ -20,17 +33,24 @@ type EnterpriseCertificateConfig struct {
// Libs specifies the locations of helper libraries.
type Libs struct {
SignerBinary string `json:"signer_binary"`
ECP string `json:"ecp"`
}
// ErrConfigUnavailable is a sentinel error that indicates ECP config is unavailable,
// possibly due to entire config missing or missing binary path.
var ErrConfigUnavailable = errors.New("Config is unavailable")
// LoadSignerBinaryPath retrieves the path of the signer binary from the config file.
func LoadSignerBinaryPath(configFilePath string) (path string, err error) {
jsonFile, err := os.Open(configFilePath)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return "", ErrConfigUnavailable
}
return "", err
}
byteValue, err := ioutil.ReadAll(jsonFile)
byteValue, err := io.ReadAll(jsonFile)
if err != nil {
return "", err
}
@ -39,9 +59,9 @@ func LoadSignerBinaryPath(configFilePath string) (path string, err error) {
if err != nil {
return "", err
}
signerBinaryPath := config.Libs.SignerBinary
signerBinaryPath := config.Libs.ECP
if signerBinaryPath == "" {
return "", errors.New("Signer binary path is missing.")
return "", ErrConfigUnavailable
}
return signerBinaryPath, nil
}
@ -61,9 +81,8 @@ func guessHomeDir() string {
func getDefaultConfigFileDirectory() (directory string) {
if runtime.GOOS == "windows" {
return filepath.Join(os.Getenv("APPDATA"), "gcloud")
} else {
return filepath.Join(guessHomeDir(), ".config/gcloud")
}
return filepath.Join(guessHomeDir(), ".config/gcloud")
}
// GetDefaultConfigFilePath returns the default path of the enterprise certificate config file created by gCloud.

2
vendor/github.com/googleapis/gax-go/v2/.release-please-manifest.json generated vendored
View file

@ -1,3 +1,3 @@
{
"v2": "2.5.1"
"v2": "2.8.0"
}

29
vendor/github.com/googleapis/gax-go/v2/CHANGES.md generated vendored
View file

@ -1,5 +1,34 @@
# Changelog
## [2.8.0](https://github.com/googleapis/gax-go/compare/v2.7.1...v2.8.0) (2023-03-15)
### Features
* **v2:** add WithTimeout option ([#259](https://github.com/googleapis/gax-go/issues/259)) ([9a8da43](https://github.com/googleapis/gax-go/commit/9a8da43693002448b1e8758023699387481866d1))
## [2.7.1](https://github.com/googleapis/gax-go/compare/v2.7.0...v2.7.1) (2023-03-06)
### Bug Fixes
* **v2/apierror:** return Unknown GRPCStatus when err source is HTTP ([#260](https://github.com/googleapis/gax-go/issues/260)) ([043b734](https://github.com/googleapis/gax-go/commit/043b73437a240a91229207fb3ee52a9935a36f23)), refs [#254](https://github.com/googleapis/gax-go/issues/254)
## [2.7.0](https://github.com/googleapis/gax-go/compare/v2.6.0...v2.7.0) (2022-11-02)
### Features
* update google.golang.org/api to latest ([#240](https://github.com/googleapis/gax-go/issues/240)) ([f690a02](https://github.com/googleapis/gax-go/commit/f690a02c806a2903bdee943ede3a58e3a331ebd6))
* **v2/apierror:** add apierror.FromWrappingError ([#238](https://github.com/googleapis/gax-go/issues/238)) ([9dbd96d](https://github.com/googleapis/gax-go/commit/9dbd96d59b9d54ceb7c025513aa8c1a9d727382f))
## [2.6.0](https://github.com/googleapis/gax-go/compare/v2.5.1...v2.6.0) (2022-10-13)
### Features
* **v2:** copy DetermineContentType functionality ([#230](https://github.com/googleapis/gax-go/issues/230)) ([2c52a70](https://github.com/googleapis/gax-go/commit/2c52a70bae965397f740ed27d46aabe89ff249b3))
## [2.5.1](https://github.com/googleapis/gax-go/compare/v2.5.0...v2.5.1) (2022-08-04)

56
vendor/github.com/googleapis/gax-go/v2/apierror/apierror.go generated vendored
View file

@ -39,6 +39,7 @@ import (
jsonerror "github.com/googleapis/gax-go/v2/apierror/internal/proto"
"google.golang.org/api/googleapi"
"google.golang.org/genproto/googleapis/rpc/errdetails"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/proto"
@ -197,12 +198,12 @@ func (a *APIError) Unwrap() error {
// Error returns a readable representation of the APIError.
func (a *APIError) Error() string {
var msg string
if a.status != nil {
msg = a.err.Error()
} else if a.httpErr != nil {
if a.httpErr != nil {
// Truncate the googleapi.Error message because it dumps the Details in
// an ugly way.
msg = fmt.Sprintf("googleapi: Error %d: %s", a.httpErr.Code, a.httpErr.Message)
} else if a.status != nil {
msg = a.err.Error()
}
return strings.TrimSpace(fmt.Sprintf("%s\n%s", msg, a.details))
}
@ -233,30 +234,53 @@ func (a *APIError) Metadata() map[string]string {
}
// FromError parses a Status error or a googleapi.Error and builds an APIError.
func FromError(err error) (*APIError, bool) {
if err == nil {
return nil, false
}
ae := APIError{err: err}
// setDetailsFromError parses a Status error or a googleapi.Error
// and sets status and details or httpErr and details, respectively.
// It returns false if neither Status nor googleapi.Error can be parsed.
// When err is a googleapi.Error, the status of the returned error will
// be set to an Unknown error, rather than nil, since a nil code is
// interpreted as OK in the gRPC status package.
func (a *APIError) setDetailsFromError(err error) bool {
st, isStatus := status.FromError(err)
var herr *googleapi.Error
isHTTPErr := errors.As(err, &herr)
switch {
case isStatus:
ae.status = st
ae.details = parseDetails(st.Details())
a.status = st
a.details = parseDetails(st.Details())
case isHTTPErr:
ae.httpErr = herr
ae.details = parseHTTPDetails(herr)
a.httpErr = herr
a.details = parseHTTPDetails(herr)
a.status = status.New(codes.Unknown, herr.Message)
default:
return false
}
return true
}
// FromError parses a Status error or a googleapi.Error and builds an
// APIError, wrapping the provided error in the new APIError. It
// returns false if neither Status nor googleapi.Error can be parsed.
func FromError(err error) (*APIError, bool) {
return ParseError(err, true)
}
// ParseError parses a Status error or a googleapi.Error and builds an
// APIError. If wrap is true, it wraps the error in the new APIError.
// It returns false if neither Status nor googleapi.Error can be parsed.
func ParseError(err error, wrap bool) (*APIError, bool) {
if err == nil {
return nil, false
}
ae := APIError{}
if wrap {
ae = APIError{err: err}
}
if !ae.setDetailsFromError(err) {
return nil, false
}
return &ae, true
}
// parseDetails accepts a slice of interface{} that should be backed by some

21
vendor/github.com/googleapis/gax-go/v2/call_option.go generated vendored
View file

@ -218,6 +218,14 @@ func (p pathOpt) Resolve(s *CallSettings) {
s.Path = p.p
}
type timeoutOpt struct {
t time.Duration
}
func (t timeoutOpt) Resolve(s *CallSettings) {
s.timeout = t.t
}
// WithPath applies a Path override to the HTTP-based APICall.
//
// This is for internal use only.
@ -230,6 +238,15 @@ func WithGRPCOptions(opt ...grpc.CallOption) CallOption {
return grpcOpt(append([]grpc.CallOption(nil), opt...))
}
// WithTimeout is a convenience option for setting a context.WithTimeout on the
// singular context.Context used for **all** APICall attempts. Calculated from
// the start of the first APICall attempt.
// If the context.Context provided to Invoke already has a Deadline set, that
// will always be respected over the deadline calculated using this option.
func WithTimeout(t time.Duration) CallOption {
return &timeoutOpt{t: t}
}
// CallSettings allow fine-grained control over how calls are made.
type CallSettings struct {
// Retry returns a Retryer to be used to control retry logic of a method call.
@ -241,4 +258,8 @@ type CallSettings struct {
// Path is an HTTP override for an APICall.
Path string
// Timeout defines the amount of time that Invoke has to complete.
// Unexported so it cannot be changed by the code in an APICall.
timeout time.Duration
}

112
vendor/github.com/googleapis/gax-go/v2/content_type.go generated vendored Normal file
View file

@ -0,0 +1,112 @@
// Copyright 2022, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package gax
import (
"io"
"io/ioutil"
"net/http"
)
const sniffBuffSize = 512
func newContentSniffer(r io.Reader) *contentSniffer {
return &contentSniffer{r: r}
}
// contentSniffer wraps a Reader, and reports the content type determined by sniffing up to 512 bytes from the Reader.
type contentSniffer struct {
r io.Reader
start []byte // buffer for the sniffed bytes.
err error // set to any error encountered while reading bytes to be sniffed.
ctype string // set on first sniff.
sniffed bool // set to true on first sniff.
}
func (cs *contentSniffer) Read(p []byte) (n int, err error) {
// Ensure that the content type is sniffed before any data is consumed from Reader.
_, _ = cs.ContentType()
if len(cs.start) > 0 {
n := copy(p, cs.start)
cs.start = cs.start[n:]
return n, nil
}
// We may have read some bytes into start while sniffing, even if the read ended in an error.
// We should first return those bytes, then the error.
if cs.err != nil {
return 0, cs.err
}
// Now we have handled all bytes that were buffered while sniffing. Now just delegate to the underlying reader.
return cs.r.Read(p)
}
// ContentType returns the sniffed content type, and whether the content type was successfully sniffed.
func (cs *contentSniffer) ContentType() (string, bool) {
if cs.sniffed {
return cs.ctype, cs.ctype != ""
}
cs.sniffed = true
// If ReadAll hits EOF, it returns err==nil.
cs.start, cs.err = ioutil.ReadAll(io.LimitReader(cs.r, sniffBuffSize))
// Don't try to detect the content type based on possibly incomplete data.
if cs.err != nil {
return "", false
}
cs.ctype = http.DetectContentType(cs.start)
return cs.ctype, true
}
// DetermineContentType determines the content type of the supplied reader.
// The content of media will be sniffed to determine the content type.
// After calling DetectContentType the caller must not perform further reads on
// media, but rather read from the Reader that is returned.
func DetermineContentType(media io.Reader) (io.Reader, string) {
// For backwards compatibility, allow clients to set content
// type by providing a ContentTyper for media.
// Note: This is an anonymous interface definition copied from googleapi.ContentTyper.
if typer, ok := media.(interface {
ContentType() string
}); ok {
return media, typer.ContentType()
}
sniffer := newContentSniffer(media)
if ctype, ok := sniffer.ContentType(); ok {
return sniffer, ctype
}
// If content type could not be sniffed, reads from sniffer will eventually fail with an error.
return sniffer, ""
}

2
vendor/github.com/googleapis/gax-go/v2/internal/version.go generated vendored
View file

@ -30,4 +30,4 @@
package internal
// Version is the current tagged release of the library.
const Version = "2.5.1"
const Version = "2.8.0"

10
vendor/github.com/googleapis/gax-go/v2/invoke.go generated vendored
View file

@ -68,6 +68,16 @@ type sleeper func(ctx context.Context, d time.Duration) error
// invoke implements Invoke, taking an additional sleeper argument for testing.
func invoke(ctx context.Context, call APICall, settings CallSettings, sp sleeper) error {
var retryer Retryer
// Only use the value provided via WithTimeout if the context doesn't
// already have a deadline. This is important for backwards compatibility if
// the user already set a deadline on the context given to Invoke.
if _, ok := ctx.Deadline(); !ok && settings.timeout != 0 {
c, cc := context.WithTimeout(ctx, settings.timeout)
defer cc()
ctx = c
}
for {
err := call(ctx, settings)
if err == nil {