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/*
Copyright 2020 Docker Compose CLI authors
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 compose
import (
"archive/tar"
"bytes"
"context"
"fmt"
"strconv"
"time"
"github.com/compose-spec/compose-go/v2/types"
"github.com/docker/docker/api/types/container"
)
func (s *composeService) injectSecrets(ctx context.Context, project *types.Project, service types.ServiceConfig, id string) error {
for _, config := range service.Secrets {
file := project.Secrets[config.Source]
if file.Environment == "" {
continue
}
if config.Target == "" {
config.Target = "/run/secrets/" + config.Source
} else if !isAbsTarget(config.Target) {
config.Target = "/run/secrets/" + config.Target
}
env, ok := project.Environment[file.Environment]
if !ok {
return fmt.Errorf("environment variable %q required by file %q is not set", file.Environment, file.Name)
}
b, err := createTar(env, types.FileReferenceConfig(config))
if err != nil {
return err
}
err = s.apiClient().CopyToContainer(ctx, id, "/", &b, container.CopyToContainerOptions{
CopyUIDGID: config.UID != "" || config.GID != "",
})
if err != nil {
return err
}
}
return nil
}
func (s *composeService) injectConfigs(ctx context.Context, project *types.Project, service types.ServiceConfig, id string) error {
for _, config := range service.Configs {
file := project.Configs[config.Source]
content := file.Content
if file.Environment != "" {
env, ok := project.Environment[file.Environment]
if !ok {
return fmt.Errorf("environment variable %q required by file %q is not set", file.Environment, file.Name)
}
content = env
}
if content == "" {
continue
}
if config.Target == "" {
config.Target = "/" + config.Source
}
b, err := createTar(content, types.FileReferenceConfig(config))
if err != nil {
return err
}
err = s.apiClient().CopyToContainer(ctx, id, "/", &b, container.CopyToContainerOptions{
CopyUIDGID: config.UID != "" || config.GID != "",
})
if err != nil {
return err
}
}
return nil
}
func createTar(env string, config types.FileReferenceConfig) (bytes.Buffer, error) {
value := []byte(env)
b := bytes.Buffer{}
tarWriter := tar.NewWriter(&b)
mode := uint32(0o444)
if config.Mode != nil {
mode = *config.Mode
}
var uid, gid int
if config.UID != "" {
v, err := strconv.Atoi(config.UID)
if err != nil {
return b, err
}
uid = v
}
if config.GID != "" {
v, err := strconv.Atoi(config.GID)
if err != nil {
return b, err
}
gid = v
}
header := &tar.Header{
Name: config.Target,
Size: int64(len(value)),
Mode: int64(mode),
ModTime: time.Now(),
Uid: uid,
Gid: gid,
}
err := tarWriter.WriteHeader(header)
if err != nil {
return bytes.Buffer{}, err
}
_, err = tarWriter.Write(value)
if err != nil {
return bytes.Buffer{}, err
}
err = tarWriter.Close()
return b, err
}
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