123 lines
3.1 KiB
Go
123 lines
3.1 KiB
Go
// Copyright 2016 Google, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package cli
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import (
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"context"
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"encoding/csv"
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"flag"
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"fmt"
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"os"
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"strings"
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"github.com/GoogleCloudPlatform/docker-credential-gcr/config"
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"github.com/google/subcommands"
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)
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const (
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tokenSourceFlag = "token-source"
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resetAllFlag = "unset-all"
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)
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type configCmd struct {
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cmd
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tokenSources string
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resetAll bool
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}
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// NewConfigSubcommand returns a subcommands.Command which allows for user
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// configuration of cred helper behavior.
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func NewConfigSubcommand() subcommands.Command {
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return &configCmd{
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cmd{
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name: "config",
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synopsis: "configure the credential helper",
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},
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// Because only specified flags are iterated by FlagSet.Visit,
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// these values will always be explicitly set by the user if visited.
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"unused",
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false,
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}
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}
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func (c *configCmd) SetFlags(fs *flag.FlagSet) {
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srcs := make([]string, 0, len(config.SupportedGCRTokenSources))
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for src := range config.SupportedGCRTokenSources {
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srcs = append(srcs, src)
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}
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supportedSources := strings.Join(srcs, ", ")
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defaultSources := strings.Join(config.DefaultTokenSources[:], ", ")
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fs.StringVar(&c.tokenSources, tokenSourceFlag, defaultSources, "The source(s), in order, to search for credentials. Supported sources are: "+supportedSources)
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fs.BoolVar(&c.resetAll, resetAllFlag, false, "Resets all settings to default")
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}
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func (c *configCmd) Execute(_ context.Context, flags *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
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if c.resetAll {
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if err := resetAll(); err != nil {
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printError(resetAllFlag, err)
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return subcommands.ExitFailure
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}
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printSuccess("Config reset.")
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return subcommands.ExitSuccess
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}
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result := subcommands.ExitSuccess
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flags.Visit(func(f *flag.Flag) {
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if f.Name == tokenSourceFlag {
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if err := setTokenSources(c.tokenSources); err != nil {
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printError(tokenSourceFlag, err)
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result = subcommands.ExitFailure
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return
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}
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printSuccess("Token source(s) set.")
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result = subcommands.ExitSuccess
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}
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})
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return result
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}
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func resetAll() error {
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cfg, err := config.LoadUserConfig()
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if err != nil {
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return err
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}
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return cfg.ResetAll()
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}
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func setTokenSources(rawSource string) error {
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cfg, err := config.LoadUserConfig()
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if err != nil {
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return err
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}
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strReader := strings.NewReader(rawSource)
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sources, err := csv.NewReader(strReader).Read()
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if err != nil {
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return err
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}
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for i, src := range sources {
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sources[i] = strings.TrimSpace(src)
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}
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return cfg.SetTokenSources(sources)
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}
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func printSuccess(msg string) {
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fmt.Fprintf(os.Stdout, "Success: %s\n", msg)
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}
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func printError(flag string, err error) {
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fmt.Fprintf(os.Stderr, "Failure: %s: %v\n", flag, err)
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}
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