986f076276
Add a new generic container registry client via a new `container` package. Use this to create a command line utility as well as a new upload target for container registries. The code uses the github.com/containers/* project and packages to interact with container registires that is also used by skopeo, podman et al. One if the dependencies is `proglottis/gpgme` that is using cgo to bind libgpgme, so we have to add the corresponding devel package to the BuildRequires as well as installing it on CI. Checks will follow later via an integration test.
100 lines
3.2 KiB
Go
100 lines
3.2 KiB
Go
/*
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Copyright The ocicrypt Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ocicrypt
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import (
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"bytes"
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"io/ioutil"
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"github.com/pkg/errors"
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"golang.org/x/crypto/openpgp"
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"golang.org/x/crypto/openpgp/packet"
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)
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// GPGVault defines an interface for wrapping multiple secret key rings
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type GPGVault interface {
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// AddSecretKeyRingData adds a secret keyring via its raw byte array
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AddSecretKeyRingData(gpgSecretKeyRingData []byte) error
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// AddSecretKeyRingDataArray adds secret keyring via its raw byte arrays
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AddSecretKeyRingDataArray(gpgSecretKeyRingDataArray [][]byte) error
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// AddSecretKeyRingFiles adds secret keyrings given their filenames
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AddSecretKeyRingFiles(filenames []string) error
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// GetGPGPrivateKey gets the private key bytes of a keyid given a passphrase
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GetGPGPrivateKey(keyid uint64) ([]openpgp.Key, []byte)
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}
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// gpgVault wraps an array of gpgSecretKeyRing
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type gpgVault struct {
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entityLists []openpgp.EntityList
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keyDataList [][]byte // the raw data original passed in
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}
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// NewGPGVault creates an empty GPGVault
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func NewGPGVault() GPGVault {
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return &gpgVault{}
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}
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// AddSecretKeyRingData adds a secret keyring's to the gpgVault; the raw byte
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// array read from the file must be passed and will be parsed by this function
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func (g *gpgVault) AddSecretKeyRingData(gpgSecretKeyRingData []byte) error {
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// read the private keys
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r := bytes.NewReader(gpgSecretKeyRingData)
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entityList, err := openpgp.ReadKeyRing(r)
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if err != nil {
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return errors.Wrapf(err, "could not read keyring")
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}
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g.entityLists = append(g.entityLists, entityList)
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g.keyDataList = append(g.keyDataList, gpgSecretKeyRingData)
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return nil
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}
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// AddSecretKeyRingDataArray adds secret keyrings to the gpgVault; the raw byte
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// arrays read from files must be passed
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func (g *gpgVault) AddSecretKeyRingDataArray(gpgSecretKeyRingDataArray [][]byte) error {
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for _, gpgSecretKeyRingData := range gpgSecretKeyRingDataArray {
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if err := g.AddSecretKeyRingData(gpgSecretKeyRingData); err != nil {
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return err
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}
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}
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return nil
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}
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// AddSecretKeyRingFiles adds the secret key rings given their filenames
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func (g *gpgVault) AddSecretKeyRingFiles(filenames []string) error {
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for _, filename := range filenames {
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gpgSecretKeyRingData, err := ioutil.ReadFile(filename)
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if err != nil {
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return err
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}
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err = g.AddSecretKeyRingData(gpgSecretKeyRingData)
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if err != nil {
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return err
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}
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}
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return nil
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}
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// GetGPGPrivateKey gets the bytes of a specified keyid, supplying a passphrase
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func (g *gpgVault) GetGPGPrivateKey(keyid uint64) ([]openpgp.Key, []byte) {
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for i, el := range g.entityLists {
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decKeys := el.KeysByIdUsage(keyid, packet.KeyFlagEncryptCommunications)
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if len(decKeys) > 0 {
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return decKeys, g.keyDataList[i]
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}
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}
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return nil, nil
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}
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