283 lines
9.2 KiB
Go
283 lines
9.2 KiB
Go
// 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 user
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import (
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"context"
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"crypto/md5"
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"fmt"
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"image/png"
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"io"
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"time"
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"code.gitea.io/gitea/models"
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asymkey_model "code.gitea.io/gitea/models/asymkey"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/models/organization"
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packages_model "code.gitea.io/gitea/models/packages"
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repo_model "code.gitea.io/gitea/models/repo"
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system_model "code.gitea.io/gitea/models/system"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/avatar"
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"code.gitea.io/gitea/modules/eventsource"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/storage"
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"code.gitea.io/gitea/modules/util"
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"code.gitea.io/gitea/services/packages"
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)
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// DeleteUser completely and permanently deletes everything of a user,
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// but issues/comments/pulls will be kept and shown as someone has been deleted,
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// unless the user is younger than USER_DELETE_WITH_COMMENTS_MAX_DAYS.
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func DeleteUser(ctx context.Context, u *user_model.User, purge bool) error {
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if u.IsOrganization() {
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return fmt.Errorf("%s is an organization not a user", u.Name)
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}
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if purge {
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// Disable the user first
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// NOTE: This is deliberately not within a transaction as it must disable the user immediately to prevent any further action by the user to be purged.
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if err := user_model.UpdateUserCols(ctx, &user_model.User{
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ID: u.ID,
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IsActive: false,
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IsRestricted: true,
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IsAdmin: false,
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ProhibitLogin: true,
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Passwd: "",
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Salt: "",
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PasswdHashAlgo: "",
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MaxRepoCreation: 0,
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}, "is_active", "is_restricted", "is_admin", "prohibit_login", "max_repo_creation", "passwd", "salt", "passwd_hash_algo"); err != nil {
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return fmt.Errorf("unable to disable user: %s[%d] prior to purge. UpdateUserCols: %w", u.Name, u.ID, err)
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}
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// Force any logged in sessions to log out
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// FIXME: We also need to tell the session manager to log them out too.
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eventsource.GetManager().SendMessage(u.ID, &eventsource.Event{
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Name: "logout",
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})
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// Delete all repos belonging to this user
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// Now this is not within a transaction because there are internal transactions within the DeleteRepository
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// BUT: the db will still be consistent even if a number of repos have already been deleted.
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// And in fact we want to capture any repositories that are being created in other transactions in the meantime
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//
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// An alternative option here would be write a DeleteAllRepositoriesForUserID function which would delete all of the repos
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// but such a function would likely get out of date
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for {
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repos, _, err := repo_model.GetUserRepositories(&repo_model.SearchRepoOptions{
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ListOptions: db.ListOptions{
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PageSize: repo_model.RepositoryListDefaultPageSize,
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Page: 1,
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},
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Private: true,
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OwnerID: u.ID,
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Actor: u,
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})
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if err != nil {
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return fmt.Errorf("SearchRepositoryByName: %v", err)
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}
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if len(repos) == 0 {
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break
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}
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for _, repo := range repos {
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if err := models.DeleteRepository(u, u.ID, repo.ID); err != nil {
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return fmt.Errorf("unable to delete repository %s for %s[%d]. Error: %v", repo.Name, u.Name, u.ID, err)
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}
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}
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}
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// Remove from Organizations and delete last owner organizations
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// Now this is not within a transaction because there are internal transactions within the DeleteOrganization
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// BUT: the db will still be consistent even if a number of organizations memberships and organizations have already been deleted
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// And in fact we want to capture any organization additions that are being created in other transactions in the meantime
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//
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// An alternative option here would be write a function which would delete all organizations but it seems
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// but such a function would likely get out of date
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for {
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orgs, err := organization.FindOrgs(organization.FindOrgOptions{
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ListOptions: db.ListOptions{
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PageSize: repo_model.RepositoryListDefaultPageSize,
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Page: 1,
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},
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UserID: u.ID,
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IncludePrivate: true,
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})
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if err != nil {
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return fmt.Errorf("unable to find org list for %s[%d]. Error: %v", u.Name, u.ID, err)
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}
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if len(orgs) == 0 {
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break
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}
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for _, org := range orgs {
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if err := models.RemoveOrgUser(org.ID, u.ID); err != nil {
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if organization.IsErrLastOrgOwner(err) {
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err = organization.DeleteOrganization(ctx, org)
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}
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if err != nil {
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return fmt.Errorf("unable to remove user %s[%d] from org %s[%d]. Error: %v", u.Name, u.ID, org.Name, org.ID, err)
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}
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}
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}
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}
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// Delete Packages
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if setting.Packages.Enabled {
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if _, err := packages.RemoveAllPackages(ctx, u.ID); err != nil {
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return err
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}
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}
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}
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ctx, committer, err := db.TxContext()
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if err != nil {
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return err
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}
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defer committer.Close()
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// Note: A user owns any repository or belongs to any organization
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// cannot perform delete operation. This causes a race with the purge above
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// however consistency requires that we ensure that this is the case
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// Check ownership of repository.
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count, err := repo_model.CountRepositories(ctx, repo_model.CountRepositoryOptions{OwnerID: u.ID})
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if err != nil {
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return fmt.Errorf("GetRepositoryCount: %v", err)
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} else if count > 0 {
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return models.ErrUserOwnRepos{UID: u.ID}
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}
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// Check membership of organization.
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count, err = organization.GetOrganizationCount(ctx, u)
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if err != nil {
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return fmt.Errorf("GetOrganizationCount: %v", err)
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} else if count > 0 {
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return models.ErrUserHasOrgs{UID: u.ID}
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}
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// Check ownership of packages.
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if ownsPackages, err := packages_model.HasOwnerPackages(ctx, u.ID); err != nil {
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return fmt.Errorf("HasOwnerPackages: %v", err)
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} else if ownsPackages {
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return models.ErrUserOwnPackages{UID: u.ID}
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}
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if err := models.DeleteUser(ctx, u, purge); err != nil {
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return fmt.Errorf("DeleteUser: %v", err)
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}
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if err := committer.Commit(); err != nil {
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return err
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}
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committer.Close()
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if err = asymkey_model.RewriteAllPublicKeys(); err != nil {
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return err
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}
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if err = asymkey_model.RewriteAllPrincipalKeys(db.DefaultContext); err != nil {
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return err
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}
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// Note: There are something just cannot be roll back,
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// so just keep error logs of those operations.
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path := user_model.UserPath(u.Name)
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if err := util.RemoveAll(path); err != nil {
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err = fmt.Errorf("Failed to RemoveAll %s: %v", path, err)
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_ = system_model.CreateNotice(ctx, system_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
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return err
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}
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if u.Avatar != "" {
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avatarPath := u.CustomAvatarRelativePath()
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if err := storage.Avatars.Delete(avatarPath); err != nil {
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err = fmt.Errorf("Failed to remove %s: %v", avatarPath, err)
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_ = system_model.CreateNotice(ctx, system_model.NoticeTask, fmt.Sprintf("delete user '%s': %v", u.Name, err))
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return err
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}
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}
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return nil
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}
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// DeleteInactiveUsers deletes all inactive users and email addresses.
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func DeleteInactiveUsers(ctx context.Context, olderThan time.Duration) error {
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users, err := user_model.GetInactiveUsers(ctx, olderThan)
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if err != nil {
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return err
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}
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// FIXME: should only update authorized_keys file once after all deletions.
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for _, u := range users {
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select {
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case <-ctx.Done():
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return db.ErrCancelledf("Before delete inactive user %s", u.Name)
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default:
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}
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if err := DeleteUser(ctx, u, false); err != nil {
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// Ignore users that were set inactive by admin.
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if models.IsErrUserOwnRepos(err) || models.IsErrUserHasOrgs(err) || models.IsErrUserOwnPackages(err) {
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continue
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}
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return err
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}
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}
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return user_model.DeleteInactiveEmailAddresses(ctx)
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}
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// UploadAvatar saves custom avatar for user.
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func UploadAvatar(u *user_model.User, data []byte) error {
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m, err := avatar.Prepare(data)
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if err != nil {
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return err
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}
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ctx, committer, err := db.TxContext()
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if err != nil {
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return err
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}
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defer committer.Close()
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u.UseCustomAvatar = true
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// Different users can upload same image as avatar
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// If we prefix it with u.ID, it will be separated
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// Otherwise, if any of the users delete his avatar
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// Other users will lose their avatars too.
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u.Avatar = fmt.Sprintf("%x", md5.Sum([]byte(fmt.Sprintf("%d-%x", u.ID, md5.Sum(data)))))
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if err = user_model.UpdateUserCols(ctx, u, "use_custom_avatar", "avatar"); err != nil {
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return fmt.Errorf("updateUser: %v", err)
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}
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if err := storage.SaveFrom(storage.Avatars, u.CustomAvatarRelativePath(), func(w io.Writer) error {
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if err := png.Encode(w, *m); err != nil {
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log.Error("Encode: %v", err)
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}
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return err
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}); err != nil {
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return fmt.Errorf("Failed to create dir %s: %v", u.CustomAvatarRelativePath(), err)
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}
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return committer.Commit()
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}
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// DeleteAvatar deletes the user's custom avatar.
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func DeleteAvatar(u *user_model.User) error {
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aPath := u.CustomAvatarRelativePath()
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log.Trace("DeleteAvatar[%d]: %s", u.ID, aPath)
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if len(u.Avatar) > 0 {
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if err := storage.Avatars.Delete(aPath); err != nil {
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return fmt.Errorf("Failed to remove %s: %v", aPath, err)
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}
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}
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u.UseCustomAvatar = false
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u.Avatar = ""
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if _, err := db.GetEngine(db.DefaultContext).ID(u.ID).Cols("avatar, use_custom_avatar").Update(u); err != nil {
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return fmt.Errorf("UpdateUser: %v", err)
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}
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return nil
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}
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