add mail_templates and prepare cron.php

cron.php

@@ -0,0 +1,50 @@
+<?php
+// This file is meant to do tasks that failed on the first attempt
+
+
+$sql = "SELECT first_name, last_name, username, email, state FROM registrations WHERE admin_token = '" . $token
+. "' AND state = " . RegisterState::PendingAdminVerify . " LIMIT 1;";
+foreach ($db->query($sql) as $row) {
+	// will only be executed once
+	$first_name = $row["first_name"];
+	$last_name = $row["last_name"];
+	$username = $row["username"];
+	$email = $row["email"];
+	$state = $row["state"];
+
+	try {
+
+		switch ($state) {
+		case RegisterState::RegistrationAccepted:
+			// Registration got accepted but registration failed
+
+			// register user
+			require_once("MatrixConnection.php");
+			$mxConn = new MatrixConnection($homeserver, $access_token);
+
+			// generate a password with 8 characters
+			$password = bin2hex(openssl_random_pseudo_bytes(4));
+
+			$res = $mxConn->register($username, $password, $shared_secret);
+			if ($res) {
+				// send registration_success
+				send_mail_registration_success($homeserver, $first_name . " " . $last_name, $email, $username, $password, $howToURL);
+			} else {
+				send_mail_registration_allowed_but_failed($homeserver, $first_name . " " . $last_name, $email);
+				$mxMsg = new MatrixMessage();
+				$mxMsg->set_type("m.text");
+				$mxMsg->set_body("Fehler beim Registrieren von " . $first_name . " " . $last_name . ".");
+				$mxConn->send($mxMsg);
+				throw new Exception($language["REGISTRATION_FAILED"]);
+			}
+			break;
+
+		case RegisterState::RegistrationDeclined:
+			break;
+		}
+	} catch (Exception $e) {
+		print("Error while handling cron for " . $first_name . " " . $last_name . " (" . $username . ")");
+		print($e->getMessage());
+	}
+}
+?>