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|
package dockerfile2llb
import (
"path"
"github.com/moby/buildkit/client/llb"
"github.com/moby/buildkit/frontend/dockerfile/instructions"
"github.com/moby/buildkit/frontend/dockerfile/parser"
"github.com/moby/buildkit/frontend/dockerfile/shell"
"github.com/pkg/errors"
)
func dispatchSecret(d *dispatchState, m *instructions.Mount, loc []parser.Range) (llb.RunOption, error) {
id := m.CacheID
if m.Source != "" {
id = m.Source
}
if id == "" {
if m.Target == "" {
return nil, errors.Errorf("one of source, target required")
}
id = path.Base(m.Target)
}
var target *string
if m.Target != "" {
target = &m.Target
}
if m.Env == nil {
dest := m.Target
if dest == "" {
dest = "/run/secrets/" + path.Base(id)
}
target = &dest
}
if _, ok := d.outline.secrets[id]; !ok {
d.outline.secrets[id] = secretInfo{
location: loc,
required: m.Required,
}
}
opts := []llb.SecretOption{llb.SecretID(id)}
if !m.Required {
opts = append(opts, llb.SecretOptional)
}
if m.Env != nil {
opts = append(opts, llb.SecretAsEnvName(*m.Env))
}
if m.UID != nil || m.GID != nil || m.Mode != nil {
var uid, gid, mode int
if m.UID != nil {
uid = int(*m.UID)
}
if m.GID != nil {
gid = int(*m.GID)
}
if m.Mode != nil {
mode = int(*m.Mode)
} else {
mode = 0400
}
opts = append(opts, llb.SecretFileOpt(uid, gid, mode))
}
return llb.AddSecretWithDest(id, target, opts...), nil
}
// withSecretEnvMask returns an EnvGetter that masks secret values in the environment.
// This is not needed to hide actual secret values but to make it clear that the value is loaded from a secret.
func withSecretEnvMask(c *instructions.RunCommand, env shell.EnvGetter) shell.EnvGetter {
ev := &llb.EnvList{}
set := false
mounts := instructions.GetMounts(c)
for _, mount := range mounts {
if mount.Type == instructions.MountTypeSecret {
if mount.Env != nil {
ev = ev.AddOrReplace(*mount.Env, "****")
set = true
}
}
}
if !set {
return env
}
return &secretEnv{
base: env,
env: ev,
}
}
type secretEnv struct {
base shell.EnvGetter
env *llb.EnvList
}
func (s *secretEnv) Get(key string) (string, bool) {
v, ok := s.env.Get(key)
if ok {
return v, true
}
return s.base.Get(key)
}
func (s *secretEnv) Keys() []string {
bkeys := s.base.Keys()
skeys := s.env.Keys()
keys := make([]string, 0, len(bkeys)+len(skeys))
for _, k := range bkeys {
if _, ok := s.env.Get(k); !ok {
keys = append(keys, k)
}
}
keys = append(keys, skeys...)
return keys
}
|
