/
token.go
284 lines (261 loc) · 7.26 KB
/
token.go
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// Package token contains CLI client token related helpers
// tToken files consist of one line per token, each token having
// the structure of `micro://envAddress/namespace[/id]:token`, ie.
// micro://m3o.com/foo-bar-baz/asim@aslam.me:afsafasfasfaceevqcCEWVEWV
// or
// micro://m3o.com/foo-bar-baz:afsafasfasfaceevqcCEWVEWV
package token
import (
"bytes"
"encoding/base64"
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/micro/micro/v3/client/cli/namespace"
"github.com/micro/micro/v3/client/cli/util"
"github.com/micro/micro/v3/service/auth"
"github.com/micro/micro/v3/util/config"
"github.com/micro/micro/v3/util/user"
"github.com/urfave/cli/v2"
)
const tokensFileName = "tokens"
// Get tries a best effort read of auth token from user config.
// Might have missing `RefreshToken` or `Expiry` fields in case of
// incomplete or corrupted user config.
func Get(ctx *cli.Context) (*auth.AccountToken, error) {
tok, err := getFromFile(ctx)
if err == nil {
return tok, nil
}
env, err := util.GetEnv(ctx)
if err != nil {
return nil, err
}
return getFromUserConfig(env.Name)
}
type token struct {
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token"`
// unix timestamp
Created int64 `json:"created"`
// unix timestamp
Expiry int64 `json:"expiry"`
}
func tokensFilePath() string {
return filepath.Join(user.Dir, tokensFileName)
}
func getFromFile(ctx *cli.Context) (*auth.AccountToken, error) {
tokens, err := getTokens()
if err != nil {
return nil, err
}
env, err := util.GetEnv(ctx)
if err != nil {
return nil, err
}
// We save the current user
userID, err := config.Get(config.Path(env.Name, "current-user"))
if err != nil {
return nil, err
}
// Look up the token
tk, err := tokenKey(ctx, userID)
if err != nil {
return nil, err
}
tok, found := tokens[tk]
if !found {
ns, err := namespace.Get(env.Name)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("Can't find token for address %v and namespace %v", env.ProxyAddress, ns)
}
return &auth.AccountToken{
AccessToken: tok.AccessToken,
RefreshToken: tok.RefreshToken,
Created: time.Unix(tok.Created, 0),
Expiry: time.Unix(tok.Expiry, 0),
}, nil
}
func getTokens() (map[string]token, error) {
f, err := os.OpenFile(tokensFilePath(), os.O_RDONLY|os.O_CREATE, 0700)
if err != nil {
return nil, err
}
dat, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
lines := strings.Split(string(dat), "\n")
ret := map[string]token{}
for _, line := range lines {
parts := strings.Split(line, ":")
if len(parts) < 3 {
continue
}
key := strings.Join(parts[0:len(parts)-1], ":")
base64Encoded := parts[len(parts)-1]
jsonMarshalled, err := base64.StdEncoding.DecodeString(base64Encoded)
if err != nil {
return nil, fmt.Errorf("Error base64 decoding token: %v", err)
}
tok := token{}
err = json.Unmarshal(jsonMarshalled, &tok)
if err != nil {
return nil, fmt.Errorf("Error unmarshalling token: %v", err)
}
ret[key] = tok
}
return ret, nil
}
func getFromUserConfig(envName string) (*auth.AccountToken, error) {
path := []string{"micro", "auth", envName}
accessToken, _ := config.Get(config.Path(append(path, "token")...))
refreshToken, err := config.Get(config.Path(append(path, "refresh-token")...))
if err != nil {
// Gracefully degrading here in case the user only has a temporary access token at hand.
// The call will fail on the receiving end.
return &auth.AccountToken{
AccessToken: accessToken,
}, nil
}
// See if the access token has expired
expiry, _ := config.Get(config.Path(append(path, "expiry")...))
if len(expiry) == 0 {
return &auth.AccountToken{
AccessToken: accessToken,
RefreshToken: refreshToken,
}, nil
}
expiryInt, err := strconv.ParseInt(expiry, 10, 64)
if err != nil {
return nil, err
}
return &auth.AccountToken{
AccessToken: accessToken,
RefreshToken: refreshToken,
Expiry: time.Unix(expiryInt, 0),
}, nil
}
// Save saves the auth token to the user's local config file
// Caution: it overwrites $env.current-user with the accountID
// that the account token represents.
func Save(ctx *cli.Context, token *auth.AccountToken) error {
return saveToFile(ctx, token)
}
func tokenKey(ctx *cli.Context, accountID string) (string, error) {
env, err := util.GetEnv(ctx)
if err != nil {
return "", err
}
ns, err := namespace.Get(env.Name)
if err != nil {
return "", err
}
return fmt.Sprintf("micro://%v/%v/%v", env.ProxyAddress, ns, accountID), nil
}
func saveTokens(tokens map[string]token) error {
buf := bytes.NewBuffer([]byte{})
for key, t := range tokens {
marshalledToken, err := json.Marshal(t)
if err != nil {
return err
}
base64Token := base64.StdEncoding.EncodeToString(marshalledToken)
_, err = buf.WriteString(key + ":" + base64Token + "\n")
if err != nil {
return err
}
}
return ioutil.WriteFile(tokensFilePath(), buf.Bytes(), 0700)
}
func saveToFile(ctx *cli.Context, authToken *auth.AccountToken) error {
tokens, err := getTokens()
if err != nil {
return err
}
account, err := auth.Inspect(authToken.AccessToken)
if err != nil {
return err
}
env, err := util.GetEnv(ctx)
if err != nil {
return err
}
// We save the current user
err = config.Set(config.Path(env.Name, "current-user"), account.ID)
if err != nil {
return err
}
key, err := tokenKey(ctx, account.ID)
if err != nil {
return err
}
tokens[key] = token{
AccessToken: authToken.AccessToken,
RefreshToken: authToken.RefreshToken,
Created: authToken.Created.Unix(),
Expiry: authToken.Expiry.Unix(),
}
return saveTokens(tokens)
}
func saveToUserConfig(envName string, token *auth.AccountToken) error {
if err := config.Set(config.Path("micro", "auth", envName, "token"), token.AccessToken); err != nil {
return err
}
// Store the refresh token in micro config
if err := config.Set(config.Path("micro", "auth", envName, "refresh-token"), token.RefreshToken); err != nil {
return err
}
// Store the refresh token in micro config
return config.Set(config.Path("micro", "auth", envName, "expiry"), fmt.Sprintf("%v", token.Expiry.Unix()))
}
// Remove deletes a token. Useful when trying to reset test
// for example at testing: not having a token is a different state
// than having an invalid token.
func Remove(ctx *cli.Context) error {
env, err := util.GetEnv(ctx)
if err != nil {
return err
}
// intentionally ignoring the errors here
removeFromUserConfig(env.Name)
return removeFromFile(ctx)
}
func removeFromFile(ctx *cli.Context) error {
tokens, err := getTokens()
if err != nil {
return err
}
env, err := util.GetEnv(ctx)
if err != nil {
return err
}
userID, err := config.Get(config.Path(env.Name, "current-user"))
if err != nil {
return err
}
key, err := tokenKey(ctx, userID)
if err != nil {
return err
}
delete(tokens, key)
return saveTokens(tokens)
}
func removeFromUserConfig(envName string) error {
if err := config.Set(config.Path("micro", "auth", envName, "token"), ""); err != nil {
return err
}
// Store the refresh token in micro config
if err := config.Set(config.Path("micro", "auth", envName, "refresh-token"), ""); err != nil {
return err
}
// Store the refresh token in micro config
return config.Set(config.Path("micro", "auth", envName, "expiry"), "")
}