Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 332 insertions, 0 deletions

diff --git a/services/user/user.go b/services/user/user.go
new file mode 100644
index 0000000..abaeb88
--- /dev/null
+++ b/services/user/user.go
@@ -0,0 +1,332 @@
+// Copyright 2024 The Forgejo Authors. All rights reserved.
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/models"
+	asymkey_model "code.gitea.io/gitea/models/asymkey"
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/organization"
+	packages_model "code.gitea.io/gitea/models/packages"
+	repo_model "code.gitea.io/gitea/models/repo"
+	system_model "code.gitea.io/gitea/models/system"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/eventsource"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/storage"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/services/agit"
+	org_service "code.gitea.io/gitea/services/org"
+	"code.gitea.io/gitea/services/packages"
+	container_service "code.gitea.io/gitea/services/packages/container"
+	repo_service "code.gitea.io/gitea/services/repository"
+)
+
+// RenameUser renames a user
+func RenameUser(ctx context.Context, u *user_model.User, newUserName string) error {
+	// Non-local users are not allowed to change their username.
+	if !u.IsOrganization() && !u.IsLocal() {
+		return user_model.ErrUserIsNotLocal{
+			UID:  u.ID,
+			Name: u.Name,
+		}
+	}
+
+	if newUserName == u.Name {
+		return nil
+	}
+
+	if err := user_model.IsUsableUsername(newUserName); err != nil {
+		return err
+	}
+
+	onlyCapitalization := strings.EqualFold(newUserName, u.Name)
+	oldUserName := u.Name
+
+	if onlyCapitalization {
+		u.Name = newUserName
+		if err := user_model.UpdateUserCols(ctx, u, "name"); err != nil {
+			u.Name = oldUserName
+			return err
+		}
+		return repo_model.UpdateRepositoryOwnerNames(ctx, u.ID, newUserName)
+	}
+
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	isExist, err := user_model.IsUserExist(ctx, u.ID, newUserName)
+	if err != nil {
+		return err
+	}
+	if isExist {
+		return user_model.ErrUserAlreadyExist{
+			Name: newUserName,
+		}
+	}
+
+	if err = repo_model.UpdateRepositoryOwnerName(ctx, oldUserName, newUserName); err != nil {
+		return err
+	}
+
+	if err = user_model.NewUserRedirect(ctx, u.ID, oldUserName, newUserName); err != nil {
+		return err
+	}
+
+	if err := agit.UserNameChanged(ctx, u, newUserName); err != nil {
+		return err
+	}
+	if err := container_service.UpdateRepositoryNames(ctx, u, newUserName); err != nil {
+		return err
+	}
+
+	u.Name = newUserName
+	u.LowerName = strings.ToLower(newUserName)
+	if err := user_model.UpdateUserCols(ctx, u, "name", "lower_name"); err != nil {
+		u.Name = oldUserName
+		u.LowerName = strings.ToLower(oldUserName)
+		return err
+	}
+
+	// Do not fail if directory does not exist
+	if err = util.Rename(user_model.UserPath(oldUserName), user_model.UserPath(newUserName)); err != nil && !os.IsNotExist(err) {
+		u.Name = oldUserName
+		u.LowerName = strings.ToLower(oldUserName)
+		return fmt.Errorf("rename user directory: %w", err)
+	}
+
+	if err = committer.Commit(); err != nil {
+		u.Name = oldUserName
+		u.LowerName = strings.ToLower(oldUserName)
+		if err2 := util.Rename(user_model.UserPath(newUserName), user_model.UserPath(oldUserName)); err2 != nil && !os.IsNotExist(err2) {
+			log.Critical("Unable to rollback directory change during failed username change from: %s to: %s. DB Error: %v. Filesystem Error: %v", oldUserName, newUserName, err, err2)
+			return fmt.Errorf("failed to rollback directory change during failed username change from: %s to: %s. DB Error: %w. Filesystem Error: %v", oldUserName, newUserName, err, err2)
+		}
+		return err
+	}
+	return nil
+}
+
+// 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(ctx context.Context, u *user_model.User, purge bool) error {
+	if u.IsOrganization() {
+		return fmt.Errorf("%s is an organization not a user", u.Name)
+	}
+
+	if user_model.IsLastAdminUser(ctx, u) {
+		return models.ErrDeleteLastAdminUser{UID: u.ID}
+	}
+
+	hasSSHKey, err := db.GetEngine(ctx).Where("owner_id = ? AND type != ?", u.ID, asymkey_model.KeyTypePrincipal).Table("public_key").Exist()
+	if err != nil {
+		return err
+	}
+
+	hasPrincipialSSHKey, err := db.GetEngine(ctx).Where("owner_id = ? AND type = ?", u.ID, asymkey_model.KeyTypePrincipal).Table("public_key").Exist()
+	if err != nil {
+		return err
+	}
+
+	if purge {
+		// Disable the user first
+		// 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.
+		if err := user_model.UpdateUserCols(ctx, &user_model.User{
+			ID:              u.ID,
+			IsActive:        false,
+			IsRestricted:    true,
+			IsAdmin:         false,
+			ProhibitLogin:   true,
+			Passwd:          "",
+			Salt:            "",
+			PasswdHashAlgo:  "",
+			MaxRepoCreation: 0,
+		}, "is_active", "is_restricted", "is_admin", "prohibit_login", "max_repo_creation", "passwd", "salt", "passwd_hash_algo"); err != nil {
+			return fmt.Errorf("unable to disable user: %s[%d] prior to purge. UpdateUserCols: %w", u.Name, u.ID, err)
+		}
+
+		// Force any logged in sessions to log out
+		// FIXME: We also need to tell the session manager to log them out too.
+		eventsource.GetManager().SendMessage(u.ID, &eventsource.Event{
+			Name: "logout",
+		})
+
+		// Delete all repos belonging to this user
+		// Now this is not within a transaction because there are internal transactions within the DeleteRepository
+		// BUT: the db will still be consistent even if a number of repos have already been deleted.
+		// And in fact we want to capture any repositories that are being created in other transactions in the meantime
+		//
+		// An alternative option here would be write a DeleteAllRepositoriesForUserID function which would delete all of the repos
+		// but such a function would likely get out of date
+		err := repo_service.DeleteOwnerRepositoriesDirectly(ctx, u)
+		if err != nil {
+			return err
+		}
+
+		// Remove from Organizations and delete last owner organizations
+		// Now this is not within a transaction because there are internal transactions within the DeleteOrganization
+		// BUT: the db will still be consistent even if a number of organizations memberships and organizations have already been deleted
+		// And in fact we want to capture any organization additions that are being created in other transactions in the meantime
+		//
+		// An alternative option here would be write a function which would delete all organizations but it seems
+		// but such a function would likely get out of date
+		for {
+			orgs, err := db.Find[organization.Organization](ctx, organization.FindOrgOptions{
+				ListOptions: db.ListOptions{
+					PageSize: repo_model.RepositoryListDefaultPageSize,
+					Page:     1,
+				},
+				UserID:         u.ID,
+				IncludePrivate: true,
+			})
+			if err != nil {
+				return fmt.Errorf("unable to find org list for %s[%d]. Error: %w", u.Name, u.ID, err)
+			}
+			if len(orgs) == 0 {
+				break
+			}
+			for _, org := range orgs {
+				if err := models.RemoveOrgUser(ctx, org.ID, u.ID); err != nil {
+					if organization.IsErrLastOrgOwner(err) {
+						err = org_service.DeleteOrganization(ctx, org, true)
+						if err != nil {
+							return fmt.Errorf("unable to delete organization %d: %w", org.ID, err)
+						}
+					}
+					if err != nil {
+						return fmt.Errorf("unable to remove user %s[%d] from org %s[%d]. Error: %w", u.Name, u.ID, org.Name, org.ID, err)
+					}
+				}
+			}
+		}
+
+		// Delete Packages
+		if setting.Packages.Enabled {
+			if _, err := packages.RemoveAllPackages(ctx, u.ID); err != nil {
+				return err
+			}
+		}
+
+		// Delete Federated Users
+		if setting.Federation.Enabled {
+			if err := user_model.DeleteFederatedUser(ctx, u.ID); err != nil {
+				return err
+			}
+		}
+	}
+
+	ctx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	// Note: A user owns any repository or belongs to any organization
+	//	cannot perform delete operation. This causes a race with the purge above
+	//  however consistency requires that we ensure that this is the case
+
+	// Check ownership of repository.
+	count, err := repo_model.CountRepositories(ctx, repo_model.CountRepositoryOptions{OwnerID: u.ID})
+	if err != nil {
+		return fmt.Errorf("GetRepositoryCount: %w", 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: %w", err)
+	} else if count > 0 {
+		return models.ErrUserHasOrgs{UID: u.ID}
+	}
+
+	// Check ownership of packages.
+	if ownsPackages, err := packages_model.HasOwnerPackages(ctx, u.ID); err != nil {
+		return fmt.Errorf("HasOwnerPackages: %w", err)
+	} else if ownsPackages {
+		return models.ErrUserOwnPackages{UID: u.ID}
+	}
+
+	if err := deleteUser(ctx, u, purge); err != nil {
+		return fmt.Errorf("DeleteUser: %w", err)
+	}
+
+	if err := committer.Commit(); err != nil {
+		return err
+	}
+	committer.Close()
+
+	if hasSSHKey {
+		if err = asymkey_model.RewriteAllPublicKeys(ctx); err != nil {
+			return err
+		}
+	}
+
+	if hasPrincipialSSHKey {
+		if err = asymkey_model.RewriteAllPrincipalKeys(ctx); 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: %w", path, err)
+		_ = system_model.CreateNotice(ctx, system_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: %w", avatarPath, err)
+			_ = system_model.CreateNotice(ctx, system_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(ctx, u, false); err != nil {
+			// Ignore users that were set inactive by admin.
+			if models.IsErrUserOwnRepos(err) || models.IsErrUserHasOrgs(err) ||
+				models.IsErrUserOwnPackages(err) || models.IsErrDeleteLastAdminUser(err) {
+				log.Warn("Inactive user %q has repositories, organizations or packages, skipping deletion: %v", u.Name, err)
+				continue
+			}
+			return err
+		}
+	}
+
+	return nil
+}