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.
114 lines
2.3 KiB
Go
114 lines
2.3 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 pkcs11
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import (
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"os"
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"runtime"
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"strings"
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"sync"
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"github.com/pkg/errors"
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)
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var (
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envLock sync.Mutex
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)
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// setEnvVars sets the environment variables given in the map and locks the environment from
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// modification with the same function; if successful, you *must* call restoreEnv with the return
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// value from this function
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func setEnvVars(env map[string]string) ([]string, error) {
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envLock.Lock()
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if len(env) == 0 {
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return nil, nil
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}
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oldenv := os.Environ()
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for k, v := range env {
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err := os.Setenv(k, v)
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if err != nil {
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restoreEnv(oldenv)
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return nil, errors.Wrapf(err, "Could not set environment variable '%s' to '%s'", k, v)
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}
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}
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return oldenv, nil
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}
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func arrayToMap(elements []string) map[string]string {
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o := make(map[string]string)
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for _, element := range elements {
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p := strings.SplitN(element, "=", 2)
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if len(p) == 2 {
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o[p[0]] = p[1]
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}
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}
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return o
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}
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// restoreEnv restores the environment to be exactly as given in the array of strings
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// and unlocks the lock
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func restoreEnv(envs []string) {
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if envs != nil && len(envs) >= 0 {
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target := arrayToMap(envs)
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curr := arrayToMap(os.Environ())
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for nc, vc := range curr {
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vt, ok := target[nc]
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if !ok {
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os.Unsetenv(nc)
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} else if vc == vt {
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delete(target, nc)
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}
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}
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for nt, vt := range target {
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os.Setenv(nt, vt)
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}
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}
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envLock.Unlock()
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}
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func getHostAndOsType() (string, string, string) {
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ht := ""
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ot := ""
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st := ""
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switch runtime.GOOS {
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case "linux":
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ot = "linux"
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st = "gnu"
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switch runtime.GOARCH {
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case "arm":
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ht = "arm"
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case "arm64":
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ht = "aarch64"
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case "amd64":
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ht = "x86_64"
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case "ppc64le":
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ht = "powerpc64le"
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case "s390x":
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ht = "s390x"
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}
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}
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return ht, ot, st
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}
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