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// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package user
import (
"context"
"crypto/md5"
"fmt"
"image/png"
"io"
"time"
"code.gitea.io/gitea/models"
admin_model "code.gitea.io/gitea/models/admin"
asymkey_model "code.gitea.io/gitea/models/asymkey"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/models/organization"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/avatar"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/storage"
"code.gitea.io/gitea/modules/util"
)
// DeleteUser completely and permanently deletes everything of a user,
// but issues/comments/pulls will be kept and shown as someone has been deleted,
// unless the user is younger than USER_DELETE_WITH_COMMENTS_MAX_DAYS.
func DeleteUser(u *user_model.User) error {
if u.IsOrganization() {
return fmt.Errorf("%s is an organization not a user", u.Name)
}
ctx, committer, err := db.TxContext()
if err != nil {
return err
}
defer committer.Close()
// Note: A user owns any repository or belongs to any organization
// cannot perform delete operation.
// Check ownership of repository.
count, err := repo_model.GetRepositoryCount(ctx, u.ID)
if err != nil {
return fmt.Errorf("GetRepositoryCount: %v", err)
} else if count > 0 {
return models.ErrUserOwnRepos{UID: u.ID}
}
// Check membership of organization.
count, err = organization.GetOrganizationCount(ctx, u)
if err != nil {
return fmt.Errorf("GetOrganizationCount: %v", err)
} else if count > 0 {
return models.ErrUserHasOrgs{UID: u.ID}
}
if err := models.DeleteUser(ctx, u); err != nil {
return fmt.Errorf("DeleteUser: %v", err)
}
if err := committer.Commit(); err != nil {
return err
}
committer.Close()
if err = asymkey_model.RewriteAllPublicKeys(); err != nil {
return err
}
if err = asymkey_model.RewriteAllPrincipalKeys(); err != nil {
return err
}
// Note: There are something just cannot be roll back,
// so just keep error logs of those operations.
path := user_model.UserPath(u.Name)
if err := util.RemoveAll(path); err != nil {
err = fmt.Errorf("Failed to RemoveAll %s: %v", path, err)
_ = admin_model.CreateNotice(ctx, admin_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
return err
}
if u.Avatar != "" {
avatarPath := u.CustomAvatarRelativePath()
if err := storage.Avatars.Delete(avatarPath); err != nil {
err = fmt.Errorf("Failed to remove %s: %v", avatarPath, err)
_ = admin_model.CreateNotice(ctx, admin_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
return err
}
}
return nil
}
// DeleteInactiveUsers deletes all inactive users and email addresses.
func DeleteInactiveUsers(ctx context.Context, olderThan time.Duration) error {
users, err := user_model.GetInactiveUsers(ctx, olderThan)
if err != nil {
return err
}
// FIXME: should only update authorized_keys file once after all deletions.
for _, u := range users {
select {
case <-ctx.Done():
return db.ErrCancelledf("Before delete inactive user %s", u.Name)
default:
}
if err := DeleteUser(u); err != nil {
// Ignore users that were set inactive by admin.
if models.IsErrUserOwnRepos(err) || models.IsErrUserHasOrgs(err) {
continue
}
return err
}
}
return user_model.DeleteInactiveEmailAddresses(ctx)
}
// UploadAvatar saves custom avatar for user.
func UploadAvatar(u *user_model.User, data []byte) error {
m, err := avatar.Prepare(data)
if err != nil {
return err
}
ctx, committer, err := db.TxContext()
if err != nil {
return err
}
defer committer.Close()
u.UseCustomAvatar = true
// Different users can upload same image as avatar
// If we prefix it with u.ID, it will be separated
// Otherwise, if any of the users delete his avatar
// Other users will lose their avatars too.
u.Avatar = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%d-%x", u.ID, md5.Sum(data)))))
if err = user_model.UpdateUserCols(ctx, u, "use_custom_avatar", "avatar"); err != nil {
return fmt.Errorf("updateUser: %v", err)
}
if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
if err := png.Encode(w, *m); err != nil {
log.Error("Encode: %v", err)
}
return err
}); err != nil {
return fmt.Errorf("Failed to create dir %s: %v", u.CustomAvatarRelativePath(), err)
}
return committer.Commit()
}
// DeleteAvatar deletes the user's custom avatar.
func DeleteAvatar(u *user_model.User) error {
aPath := u.CustomAvatarRelativePath()
log.Trace("DeleteAvatar[%d]: %s", u.ID, aPath)
if len(u.Avatar) > 0 {
if err := storage.Avatars.Delete(aPath); err != nil {
return fmt.Errorf("Failed to remove %s: %v", aPath, err)
}
}
u.UseCustomAvatar = false
u.Avatar = ""
if _, err := db.GetEngine(db.DefaultContext).ID(u.ID).Cols("avatar, use_custom_avatar").Update(u); err != nil {
return fmt.Errorf("UpdateUser: %v", err)
}
return nil
}
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