Move credential getting functions to the ConfigFile.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

cli/config/config.go

@@ -114,10 +114,10 @@ func Load(configDir string) (*configfile.ConfigFile, error) {
 
 // LoadDefaultConfigFile attempts to load the default config file and returns
 // an initialized ConfigFile struct if none is found.
-func LoadDefaultConfigFile(err io.Writer) *configfile.ConfigFile {
-	configFile, e := Load(Dir())
-	if e != nil {
-		fmt.Fprintf(err, "WARNING: Error loading config file:%v\n", e)
+func LoadDefaultConfigFile(stderr io.Writer) *configfile.ConfigFile {
+	configFile, err := Load(Dir())
+	if err != nil {
+		fmt.Fprintf(stderr, "WARNING: Error loading config file: %v\n", err)
 	}
 	if !configFile.ContainsAuth() {
 		configFile.CredentialsStore = credentials.DetectDefaultStore(configFile.CredentialsStore)

cli/config/configfile/file.go

@@ -9,6 +9,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/docker/cli/cli/config/credentials"
 	"github.com/docker/cli/opts"
 	"github.com/docker/docker/api/types"
 	"github.com/pkg/errors"
@@ -245,3 +246,56 @@ func decodeAuth(authStr string) (string, string, error) {
 	password := strings.Trim(arr[1], "\x00")
 	return arr[0], password, nil
 }
+
+// GetCredentialsStore returns a new credentials store from the settings in the
+// configuration file
+func (configFile *ConfigFile) GetCredentialsStore(serverAddress string) credentials.Store {
+	if helper := getConfiguredCredentialStore(configFile, serverAddress); helper != "" {
+		return credentials.NewNativeStore(configFile, helper)
+	}
+	return credentials.NewFileStore(configFile)
+}
+
+// GetAuthConfig for a repository from the credential store
+func (configFile *ConfigFile) GetAuthConfig(serverAddress string) (types.AuthConfig, error) {
+	return configFile.GetCredentialsStore(serverAddress).Get(serverAddress)
+}
+
+// getConfiguredCredentialStore returns the credential helper configured for the
+// given registry, the default credsStore, or the empty string if neither are
+// configured.
+func getConfiguredCredentialStore(c *ConfigFile, serverAddress string) string {
+	if c.CredentialHelpers != nil && serverAddress != "" {
+		if helper, exists := c.CredentialHelpers[serverAddress]; exists {
+			return helper
+		}
+	}
+	return c.CredentialsStore
+}
+
+// GetAllCredentials returns all of the credentials stored in all of the
+// configured credential stores.
+func (configFile *ConfigFile) GetAllCredentials() (map[string]types.AuthConfig, error) {
+	auths := make(map[string]types.AuthConfig)
+	addAll := func(from map[string]types.AuthConfig) {
+		for reg, ac := range from {
+			auths[reg] = ac
+		}
+	}
+
+	for registry := range configFile.CredentialHelpers {
+		helper := configFile.GetCredentialsStore(registry)
+		newAuths, err := helper.GetAll()
+		if err != nil {
+			return nil, err
+		}
+		addAll(newAuths)
+	}
+	defaultStore := configFile.GetCredentialsStore("")
+	newAuths, err := defaultStore.GetAll()
+	if err != nil {
+		return nil, err
+	}
+	addAll(newAuths)
+	return auths, nil
+}