Ensure register records aren't created with uid = 0

- uid = 0 matches system account and public contact records, giving unexpected display in pending user list. More importantly, the originally created user can't be approved since its user id is lost.

src/Model/Register.php

@@ -23,6 +23,7 @@ namespace Friendica\Model;
 
 use Friendica\Content\Pager;
 use Friendica\Database\DBA;
+use Friendica\Network\HTTPException;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Strings;
 
@@ -113,21 +114,27 @@ class Register
 	}
 
 	/**
-	 * Creates a register record for approval and returns the success of the database insert
+	 * Creates a register record for approval
 	 * Checks for the existence of the provided user id
 	 *
-	 * @param  integer $uid      The ID of the user needing approval
-	 * @param  string  $language The registration language
-	 * @param  string  $note     An additional message from the user
-	 * @return boolean
-	 * @throws \Exception
+	 * @param integer $uid      The ID of the user needing approval
+	 * @param string  $language The registration language
+	 * @param string  $note     An additional message from the user
+	 * @return void
+	 * @throws \OutOfBoundsException
+	 * @throws HTTPException\InternalServerErrorException
+	 * @throws HTTPException\NotFoundException
 	 */
-	public static function createForApproval(int $uid, string $language, string $note = ''): bool
+	public static function createForApproval(int $uid, string $language, string $note = ''): void
 	{
 		$hash = Strings::getRandomHex();
 
+		if (!$uid) {
+			throw new \OutOfBoundsException("User ID can't be empty");
+		}
+
 		if (!User::exists($uid)) {
-			return false;
+			throw new HTTPException\NotFoundException("User ID doesn't exist");
 		}
 
 		$fields = [
@@ -139,7 +146,9 @@ class Register
 			'note'     => $note
 		];
 
-		return DBA::insert('register', $fields);
+		if (!DBA::insert('register', $fields)) {
+			throw new HTTPException\InternalServerErrorException('Unable to insert a `register` record');
+		}
 	}
 
 	/**

src/Module/Register.php

@@ -353,6 +353,7 @@ class Register extends BaseModule
 			}
 		} elseif (intval(DI::config()->get('config', 'register_policy')) === self::APPROVE) {
 			if (!User::getAdminEmailList()) {
+				$this->logger->critical('Registration policy is set to APPROVE but no admin email address has been set in config.admin_email');
 				DI::sysmsg()->addNotice(DI::l10n()->t('Your registration can not be processed.'));
 				DI::baseUrl()->redirect();
 			}
@@ -362,10 +363,17 @@ class Register extends BaseModule
 				DI::sysmsg()->addNotice(DI::l10n()->t('You have to leave a request note for the admin.')
 					. DI::l10n()->t('Your registration can not be processed.'));
 
-				DI::baseUrl()->redirect('register/');
+				$this->baseUrl->redirect('register');
 			}
 
-			Model\Register::createForApproval($user['uid'], DI::config()->get('system', 'language'), $_POST['permonlybox']);
+			try {
+				Model\Register::createForApproval($user['uid'], DI::config()->get('system', 'language'), $_POST['permonlybox']);
+			} catch (\Throwable $e) {
+				$this->logger->error('Unable to create a `register` record.', ['user' => $user]);
+				DI::sysmsg()->addNotice(DI::l10n()->t('An internal error occured.')
+					. DI::l10n()->t('Your registration can not be processed.'));
+				$this->baseUrl->redirect('register');
+			}
 
 			// invite system
 			if ($using_invites && $invite_id) {