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Encrypt migration credentials at rest (#15895)
* encrypt migration credentials in task persistence Not sure this is the best approach, we could encrypt the entire `PayloadContent` instead. Also instead of clearing individual fields in payload content, we could just delete the task once it has (successfully) finished..? * remove credentials of past migrations * only run DB migration for completed tasks * fix binding * add omitempty * never serialize unencrypted credentials * fix import order Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
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@ -309,6 +309,8 @@ var migrations = []Migration{
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NewMigration("Add LFS columns to Mirror", addLFSMirrorColumns),
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// v179 -> v180
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NewMigration("Convert avatar url to text", convertAvatarURLToText),
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// v180 -> v181
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NewMigration("Delete credentials from past migrations", deleteMigrationCredentials),
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}
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// GetCurrentDBVersion returns the current db version
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74
models/migrations/v180.go
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74
models/migrations/v180.go
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@ -0,0 +1,74 @@
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/migrations/base"
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/util"
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jsoniter "github.com/json-iterator/go"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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func deleteMigrationCredentials(x *xorm.Engine) (err error) {
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const batchSize = 100
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// only match migration tasks, that are not pending or running
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cond := builder.Eq{
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"type": structs.TaskTypeMigrateRepo,
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}.And(builder.Gte{
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"status": structs.TaskStatusStopped,
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})
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sess := x.NewSession()
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defer sess.Close()
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for start := 0; ; start += batchSize {
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tasks := make([]*models.Task, 0, batchSize)
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if err = sess.Limit(batchSize, start).Where(cond, 0).Find(&tasks); err != nil {
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return
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}
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if len(tasks) == 0 {
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break
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}
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if err = sess.Begin(); err != nil {
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return
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}
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for _, t := range tasks {
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if t.PayloadContent, err = removeCredentials(t.PayloadContent); err != nil {
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return
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}
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if _, err = sess.ID(t.ID).Cols("payload_content").Update(t); err != nil {
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return
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}
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}
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if err = sess.Commit(); err != nil {
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return
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}
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}
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return
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}
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func removeCredentials(payload string) (string, error) {
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var opts base.MigrateOptions
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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err := json.Unmarshal([]byte(payload), &opts)
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if err != nil {
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return "", err
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}
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opts.AuthPassword = ""
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opts.AuthToken = ""
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opts.CloneAddr = util.SanitizeURLCredentials(opts.CloneAddr, true)
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confBytes, err := json.Marshal(opts)
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if err != nil {
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return "", err
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}
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return string(confBytes), nil
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}
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@ -8,8 +8,11 @@ import (
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"fmt"
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migration "code.gitea.io/gitea/modules/migrations/base"
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"code.gitea.io/gitea/modules/secret"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/util"
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jsoniter "github.com/json-iterator/go"
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"xorm.io/builder"
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@ -110,6 +113,24 @@ func (task *Task) MigrateConfig() (*migration.MigrateOptions, error) {
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if err != nil {
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return nil, err
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}
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// decrypt credentials
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if opts.CloneAddrEncrypted != "" {
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if opts.CloneAddr, err = secret.DecryptSecret(setting.SecretKey, opts.CloneAddrEncrypted); err != nil {
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return nil, err
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}
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}
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if opts.AuthPasswordEncrypted != "" {
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if opts.AuthPassword, err = secret.DecryptSecret(setting.SecretKey, opts.AuthPasswordEncrypted); err != nil {
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return nil, err
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}
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}
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if opts.AuthTokenEncrypted != "" {
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if opts.AuthToken, err = secret.DecryptSecret(setting.SecretKey, opts.AuthTokenEncrypted); err != nil {
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return nil, err
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}
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}
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return &opts, nil
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}
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return nil, fmt.Errorf("Task type is %s, not Migrate Repo", task.Type.Name())
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@ -205,12 +226,31 @@ func createTask(e Engine, task *Task) error {
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func FinishMigrateTask(task *Task) error {
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task.Status = structs.TaskStatusFinished
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task.EndTime = timeutil.TimeStampNow()
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// delete credentials when we're done, they're a liability.
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conf, err := task.MigrateConfig()
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if err != nil {
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return err
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}
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conf.AuthPassword = ""
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conf.AuthToken = ""
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conf.CloneAddr = util.SanitizeURLCredentials(conf.CloneAddr, true)
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conf.AuthPasswordEncrypted = ""
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conf.AuthTokenEncrypted = ""
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conf.CloneAddrEncrypted = ""
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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confBytes, err := json.Marshal(conf)
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if err != nil {
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return err
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}
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task.PayloadContent = string(confBytes)
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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if _, err := sess.ID(task.ID).Cols("status", "end_time").Update(task); err != nil {
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if _, err := sess.ID(task.ID).Cols("status", "end_time", "payload_content").Update(task); err != nil {
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return err
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}
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@ -11,10 +11,13 @@ import "code.gitea.io/gitea/modules/structs"
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// this is for internal usage by migrations module and func who interact with it
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type MigrateOptions struct {
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// required: true
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CloneAddr string `json:"clone_addr" binding:"Required"`
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AuthUsername string `json:"auth_username"`
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AuthPassword string `json:"auth_password"`
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AuthToken string `json:"auth_token"`
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CloneAddr string `json:"clone_addr" binding:"Required"`
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CloneAddrEncrypted string `json:"clone_addr_encrypted,omitempty"`
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AuthUsername string `json:"auth_username"`
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AuthPassword string `json:"-"`
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AuthPasswordEncrypted string `json:"auth_password_encrypted,omitempty"`
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AuthToken string `json:"-"`
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AuthTokenEncrypted string `json:"auth_token_encrypted,omitempty"`
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// required: true
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UID int `json:"uid" binding:"Required"`
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// required: true
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@ -13,8 +13,11 @@ import (
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"code.gitea.io/gitea/modules/migrations/base"
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"code.gitea.io/gitea/modules/queue"
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repo_module "code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/secret"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/timeutil"
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"code.gitea.io/gitea/modules/util"
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jsoniter "github.com/json-iterator/go"
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)
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@ -65,6 +68,24 @@ func MigrateRepository(doer, u *models.User, opts base.MigrateOptions) error {
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// CreateMigrateTask creates a migrate task
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func CreateMigrateTask(doer, u *models.User, opts base.MigrateOptions) (*models.Task, error) {
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// encrypt credentials for persistence
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var err error
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opts.CloneAddrEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.CloneAddr)
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if err != nil {
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return nil, err
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}
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opts.CloneAddr = util.SanitizeURLCredentials(opts.CloneAddr, true)
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opts.AuthPasswordEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.AuthPassword)
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if err != nil {
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return nil, err
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}
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opts.AuthPassword = ""
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opts.AuthTokenEncrypted, err = secret.EncryptSecret(setting.SecretKey, opts.AuthToken)
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if err != nil {
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return nil, err
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}
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opts.AuthToken = ""
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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bs, err := json.Marshal(&opts)
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if err != nil {
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