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v0.11.2 containers/common

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Signed-off-by: Qi Wang <qiwan@redhat.com>
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Qi Wang
2020-05-11 16:31:45 -04:00
parent 0ec2610f04
commit b79a37ead9
169 changed files with 28217 additions and 679 deletions
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vendor/github.com/containers/common/pkg/auth/auth.go generated vendored Normal file
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package auth
import (
"bufio"
"context"
"fmt"
"os"
"strings"
"github.com/containers/image/v5/docker"
"github.com/containers/image/v5/pkg/docker/config"
"github.com/containers/image/v5/pkg/sysregistriesv2"
"github.com/containers/image/v5/types"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/crypto/ssh/terminal"
)
// GetDefaultAuthFile returns env value REGISTRY_AUTH_FILE as default --authfile path
// used in multiple --authfile flag definitions
func GetDefaultAuthFile() string {
return os.Getenv("REGISTRY_AUTH_FILE")
}
// CheckAuthFile validates filepath given by --authfile
// used by command has --authfile flag
func CheckAuthFile(authfile string) error {
if authfile == "" {
return nil
}
if _, err := os.Stat(authfile); err != nil {
return errors.Wrapf(err, "error checking authfile path %s", authfile)
}
return nil
}
// systemContextWithOptions returns a version of sys
// updated with authFile and certDir values (if they are not "").
// NOTE: this is a shallow copy that can be used and updated, but may share
// data with the original parameter.
func systemContextWithOptions(sys *types.SystemContext, authFile, certDir string) *types.SystemContext {
if sys != nil {
copy := *sys
sys = &copy
} else {
sys = &types.SystemContext{}
}
if authFile != "" {
sys.AuthFilePath = authFile
}
if certDir != "" {
sys.DockerCertPath = certDir
}
return sys
}
// Login implements a “log in” command with the provided opts and args
// reading the password from opts.Stdin or the options in opts.
func Login(ctx context.Context, systemContext *types.SystemContext, opts *LoginOptions, args []string) error {
systemContext = systemContextWithOptions(systemContext, opts.AuthFile, opts.CertDir)
var (
server string
err error
)
if len(args) > 1 {
return errors.Errorf("login accepts only one registry to login to")
}
if len(args) == 0 {
if !opts.AcceptUnspecifiedRegistry {
return errors.Errorf("please provide a registry to login to")
}
if server, err = defaultRegistryWhenUnspecified(systemContext); err != nil {
return err
}
logrus.Debugf("registry not specified, default to the first registry %q from registries.conf", server)
} else {
server = getRegistryName(args[0])
}
authConfig, err := config.GetCredentials(systemContext, server)
if err != nil {
return errors.Wrapf(err, "error reading auth file")
}
if opts.GetLoginSet {
if authConfig.Username == "" {
return errors.Errorf("not logged into %s", server)
}
fmt.Fprintf(opts.Stdout, "%s\n", authConfig.Username)
return nil
}
if authConfig.IdentityToken != "" {
return errors.Errorf("currently logged in, auth file contains an Identity token")
}
password := opts.Password
if opts.StdinPassword {
var stdinPasswordStrBuilder strings.Builder
if opts.Password != "" {
return errors.Errorf("Can't specify both --password-stdin and --password")
}
if opts.Username == "" {
return errors.Errorf("Must provide --username with --password-stdin")
}
scanner := bufio.NewScanner(opts.Stdin)
for scanner.Scan() {
fmt.Fprint(&stdinPasswordStrBuilder, scanner.Text())
}
password = stdinPasswordStrBuilder.String()
}
// If no username and no password is specified, try to use existing ones.
if opts.Username == "" && password == "" && authConfig.Username != "" && authConfig.Password != "" {
fmt.Println("Authenticating with existing credentials...")
if err := docker.CheckAuth(ctx, systemContext, authConfig.Username, authConfig.Password, server); err == nil {
fmt.Fprintln(opts.Stdout, "Existing credentials are valid. Already logged in to", server)
return nil
}
fmt.Fprintln(opts.Stdout, "Existing credentials are invalid, please enter valid username and password")
}
username, password, err := getUserAndPass(opts, password, authConfig.Username)
if err != nil {
return errors.Wrapf(err, "error getting username and password")
}
if err = docker.CheckAuth(ctx, systemContext, username, password, server); err == nil {
// Write the new credentials to the authfile
if err = config.SetAuthentication(systemContext, server, username, password); err != nil {
return err
}
}
if err == nil {
fmt.Fprintln(opts.Stdout, "Login Succeeded!")
return nil
}
if unauthorized, ok := err.(docker.ErrUnauthorizedForCredentials); ok {
logrus.Debugf("error logging into %q: %v", server, unauthorized)
return errors.Errorf("error logging into %q: invalid username/password", server)
}
return errors.Wrapf(err, "error authenticating creds for %q", server)
}
// getRegistryName scrubs and parses the input to get the server name
func getRegistryName(server string) string {
// removes 'http://' or 'https://' from the front of the
// server/registry string if either is there. This will be mostly used
// for user input from 'Buildah login' and 'Buildah logout'.
server = strings.TrimPrefix(strings.TrimPrefix(server, "https://"), "http://")
// gets the registry from the input. If the input is of the form
// quay.io/myuser/myimage, it will parse it and just return quay.io
split := strings.Split(server, "/")
if len(split) > 1 {
return split[0]
}
return split[0]
}
// getUserAndPass gets the username and password from STDIN if not given
// using the -u and -p flags. If the username prompt is left empty, the
// displayed userFromAuthFile will be used instead.
func getUserAndPass(opts *LoginOptions, password, userFromAuthFile string) (string, string, error) {
var err error
reader := bufio.NewReader(opts.Stdin)
username := opts.Username
if username == "" {
if userFromAuthFile != "" {
fmt.Fprintf(opts.Stdout, "Username (%s): ", userFromAuthFile)
} else {
fmt.Fprint(opts.Stdout, "Username: ")
}
username, err = reader.ReadString('\n')
if err != nil {
return "", "", errors.Wrapf(err, "error reading username")
}
// If the user just hit enter, use the displayed user from the
// the authentication file. This allows to do a lazy
// `$ buildah login -p $NEW_PASSWORD` without specifying the
// user.
if strings.TrimSpace(username) == "" {
username = userFromAuthFile
}
}
if password == "" {
fmt.Fprint(opts.Stdout, "Password: ")
pass, err := terminal.ReadPassword(0)
if err != nil {
return "", "", errors.Wrapf(err, "error reading password")
}
password = string(pass)
fmt.Fprintln(opts.Stdout)
}
return strings.TrimSpace(username), password, err
}
// Logout implements a “log out” command with the provided opts and args
func Logout(systemContext *types.SystemContext, opts *LogoutOptions, args []string) error {
if err := CheckAuthFile(opts.AuthFile); err != nil {
return err
}
systemContext = systemContextWithOptions(systemContext, opts.AuthFile, "")
var (
server string
err error
)
if len(args) > 1 {
return errors.Errorf("logout accepts only one registry to logout from")
}
if len(args) == 0 && !opts.All {
if !opts.AcceptUnspecifiedRegistry {
return errors.Errorf("please provide a registry to logout from")
}
if server, err = defaultRegistryWhenUnspecified(systemContext); err != nil {
return err
}
logrus.Debugf("registry not specified, default to the first registry %q from registries.conf", server)
}
if len(args) != 0 {
if opts.All {
return errors.Errorf("--all takes no arguments")
}
server = getRegistryName(args[0])
}
if opts.All {
if err := config.RemoveAllAuthentication(systemContext); err != nil {
return err
}
fmt.Fprintln(opts.Stdout, "Removed login credentials for all registries")
return nil
}
err = config.RemoveAuthentication(systemContext, server)
switch err {
case nil:
fmt.Fprintf(opts.Stdout, "Removed login credentials for %s\n", server)
return nil
case config.ErrNotLoggedIn:
return errors.Errorf("Not logged into %s\n", server)
default:
return errors.Wrapf(err, "error logging out of %q", server)
}
}
// defaultRegistryWhenUnspecified returns first registry from search list of registry.conf
// used by login/logout when registry argument is not specified
func defaultRegistryWhenUnspecified(systemContext *types.SystemContext) (string, error) {
registriesFromFile, err := sysregistriesv2.UnqualifiedSearchRegistries(systemContext)
if err != nil {
return "", errors.Wrapf(err, "error getting registry from registry.conf, please specify a registry")
}
if len(registriesFromFile) == 0 {
return "", errors.Errorf("no registries found in registries.conf, a registry must be provided")
}
return registriesFromFile[0], nil
}

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vendor/github.com/containers/common/pkg/auth/cli.go generated vendored Normal file
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package auth
import (
"io"
"github.com/spf13/pflag"
)
// LoginOptions represents common flags in login
// In addition, the caller should probably provide a --tls-verify flag (that affects the provided
// *types.SystemContest)
type LoginOptions struct {
// CLI flags managed by the FlagSet returned by GetLoginFlags
// Callers that use GetLoginFlags should not need to touch these values at all; callers that use
// other CLI frameworks should set them based on user input.
AuthFile string
CertDir string
Password string
Username string
StdinPassword bool
GetLoginSet bool
// Options caller can set
Stdin io.Reader // set to os.Stdin
Stdout io.Writer // set to os.Stdout
AcceptUnspecifiedRegistry bool // set to true if allows login with unspecified registry
}
// LogoutOptions represents the results for flags in logout
type LogoutOptions struct {
// CLI flags managed by the FlagSet returned by GetLogoutFlags
// Callers that use GetLogoutFlags should not need to touch these values at all; callers that use
// other CLI frameworks should set them based on user input.
AuthFile string
All bool
// Options caller can set
Stdout io.Writer // set to os.Stdout
AcceptUnspecifiedRegistry bool // set to true if allows logout with unspecified registry
}
// GetLoginFlags defines and returns login flags for containers tools
func GetLoginFlags(flags *LoginOptions) *pflag.FlagSet {
fs := pflag.FlagSet{}
fs.StringVar(&flags.AuthFile, "authfile", GetDefaultAuthFile(), "path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
fs.StringVar(&flags.CertDir, "cert-dir", "", "use certificates at the specified path to access the registry")
fs.StringVarP(&flags.Password, "password", "p", "", "Password for registry")
fs.StringVarP(&flags.Username, "username", "u", "", "Username for registry")
fs.BoolVar(&flags.StdinPassword, "password-stdin", false, "Take the password from stdin")
fs.BoolVar(&flags.GetLoginSet, "get-login", false, "Return the current login user for the registry")
return &fs
}
// GetLogoutFlags defines and returns logout flags for containers tools
func GetLogoutFlags(flags *LogoutOptions) *pflag.FlagSet {
fs := pflag.FlagSet{}
fs.StringVar(&flags.AuthFile, "authfile", GetDefaultAuthFile(), "path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
fs.BoolVarP(&flags.All, "all", "a", false, "Remove the cached credentials for all registries in the auth file")
return &fs
}