DockerCLI/cli/config/credentials/file_store.go

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package credentials
import (
"net"
"net/url"
"strings"
"github.com/docker/cli/cli/config/types"
)
type store interface {
Save() error
GetAuthConfigs() map[string]types.AuthConfig
GetFilename() string
}
// fileStore implements a credentials store using
// the docker configuration file to keep the credentials in plain text.
type fileStore struct {
file store
}
// NewFileStore creates a new file credentials store.
func NewFileStore(file store) Store {
return &fileStore{file: file}
}
// Erase removes the given credentials from the file store.
func (c *fileStore) Erase(serverAddress string) error {
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if _, exists := c.file.GetAuthConfigs()[serverAddress]; !exists {
// nothing to do; no credentials found for the given serverAddress
return nil
}
delete(c.file.GetAuthConfigs(), serverAddress)
return c.file.Save()
}
// Get retrieves credentials for a specific server from the file store.
func (c *fileStore) Get(serverAddress string) (types.AuthConfig, error) {
authConfig, ok := c.file.GetAuthConfigs()[serverAddress]
if !ok {
// Maybe they have a legacy config file, we will iterate the keys converting
// them to the new format and testing
for r, ac := range c.file.GetAuthConfigs() {
if serverAddress == ConvertToHostname(r) {
return ac, nil
}
}
authConfig = types.AuthConfig{}
}
return authConfig, nil
}
func (c *fileStore) GetAll() (map[string]types.AuthConfig, error) {
return c.file.GetAuthConfigs(), nil
}
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// Store saves the given credentials in the file store. This function is
// idempotent and does not update the file if credentials did not change.
func (c *fileStore) Store(authConfig types.AuthConfig) error {
authConfigs := c.file.GetAuthConfigs()
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if oldAuthConfig, ok := authConfigs[authConfig.ServerAddress]; ok && oldAuthConfig == authConfig {
// Credentials didn't change, so skip updating the configuration file.
return nil
}
authConfigs[authConfig.ServerAddress] = authConfig
return c.file.Save()
}
func (c *fileStore) GetFilename() string {
return c.file.GetFilename()
}
func (c *fileStore) IsFileStore() bool {
return true
}
// ConvertToHostname converts a registry url which has http|https prepended
// to just an hostname.
// Copied from github.com/docker/docker/registry.ConvertToHostname to reduce dependencies.
func ConvertToHostname(maybeURL string) string {
stripped := maybeURL
if strings.Contains(stripped, "://") {
u, err := url.Parse(stripped)
if err == nil && u.Hostname() != "" {
if u.Port() == "" {
return u.Hostname()
}
return net.JoinHostPort(u.Hostname(), u.Port())
}
}
hostName, _, _ := strings.Cut(stripped, "/")
return hostName
}