mirror of
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208 lines
8.3 KiB
PHP
208 lines
8.3 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* External message API
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*
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* @package moodlecore
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* @subpackage message
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* @copyright 2011 Moodle Pty Ltd (http://moodle.com)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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require_once("$CFG->libdir/externallib.php");
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/**
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* Message functions
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*/
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class core_message_external extends external_api {
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/**
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* Returns description of method parameters
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* @return external_function_parameters
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*/
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public static function send_instant_messages_parameters() {
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return new external_function_parameters(
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array(
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'messages' => new external_multiple_structure(
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new external_single_structure(
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array(
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'touserid' => new external_value(PARAM_INT, 'id of the user to send the private message'),
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'text' => new external_value(PARAM_RAW, 'the text of the message - not that you can send anything it will be automatically cleaned to PARAM_TEXT and used againt MOODLE_FORMAT'),
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'clientmsgid' => new external_value(PARAM_ALPHANUMEXT, 'your own client id for the message. If this id is provided, the fail message id will be returned to you', VALUE_OPTIONAL),
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)
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)
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)
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)
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);
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}
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/**
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* Send private messages from the current USER to other users
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*
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* @param $messages An array of message to send.
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* @return boolean
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*/
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public static function send_instant_messages($messages = array()) {
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global $CFG, $USER, $DB;
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require_once($CFG->dirroot . "/message/lib.php");
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//check if messaging is enabled
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if (!$CFG->messaging) {
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throw new moodle_exception('disabled', 'message');
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}
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// Ensure the current user is allowed to run this function
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$context = get_context_instance(CONTEXT_SYSTEM);
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self::validate_context($context);
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require_capability('moodle/site:sendmessage', $context);
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$params = self::validate_parameters(self::send_instant_messages_parameters(), array('messages' => $messages));
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//retrieve all tousers of the messages
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$receivers = array();
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foreach($params['messages'] as $message) {
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$receivers[] = $message['touserid'];
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}
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list($sqluserids, $sqlparams) = $DB->get_in_or_equal($receivers, SQL_PARAMS_NAMED, 'userid_');
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$tousers = $DB->get_records_select("user", "id " . $sqluserids . " AND deleted = 0", $sqlparams);
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$blocklist = array();
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$contactlist = array();
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$sqlparams['contactid'] = $USER->id;
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$rs = $DB->get_recordset_sql("SELECT *
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FROM {message_contacts}
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WHERE userid $sqluserids
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AND contactid = :contactid", $sqlparams);
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foreach ($rs as $record) {
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if ($record->blocked) {
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// $record->userid is blocking current user
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$blocklist[$record->userid] = true;
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} else {
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// $record->userid have current user as contact
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$contactlist[$record->userid] = true;
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}
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}
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$rs->close();
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$canreadallmessages = has_capability('moodle/site:readallmessages', $context);
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$resultmessages = array();
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foreach ($params['messages'] as $message) {
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$text = clean_param($message['text'], PARAM_TEXT);
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$resultmsg = array(); //the infos about the success of the operation
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//we are going to do some checking
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//code should match /messages/index.php checks
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$success = true;
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//check the user exists
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if (empty($tousers[$message['touserid']])) {
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$success = false;
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$errormessage = get_string('touserdoesntexist', 'message', $message['touserid']);
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}
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//check that the touser is not blocking the current user
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if ($success and !empty($blocklist[$message['touserid']]) and !$canreadallmessages) {
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$success = false;
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$errormessage = get_string('userisblockingyou', 'message');
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}
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// Check if the user is a contact
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//TODO: performance improvement - edit the function so we can pass an array instead userid
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$blocknoncontacts = get_user_preferences('message_blocknoncontacts', NULL, $message['touserid']);
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// message_blocknoncontacts option is on and current user is not in contact list
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if ($success && empty($contactlist[$message['touserid']]) && !empty($blocknoncontacts)) {
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// The user isn't a contact and they have selected to block non contacts so this message won't be sent.
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$success = false;
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$errormessage = get_string('userisblockingyounoncontact', 'message');
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}
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//now we can send the message (at least try)
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if ($success) {
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//TODO: performance improvement - edit the function so we can pass an array instead one touser object
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$success = message_post_message($USER, $tousers[$message['touserid']], $text, FORMAT_MOODLE);
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}
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//build the resultmsg
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if (isset($message['clientmsgid'])) {
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$resultmsg['clientmsgid'] = $message['clientmsgid'];
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}
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if ($success) {
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$resultmsg['msgid'] = $success;
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} else {
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$resultmsg['msgid'] = -1;
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$resultmsg['errormessage'] = $errormessage;
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}
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$resultmessages[] = $resultmsg;
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}
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return $resultmessages;
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}
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/**
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* Returns description of method result value
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* @return external_description
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*/
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public static function send_instant_messages_returns() {
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return new external_multiple_structure(
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new external_single_structure(
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array(
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'msgid' => new external_value(PARAM_INT, 'test this to know if it succeeds: id of the created message if it succeeded, -1 when failed'),
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'clientmsgid' => new external_value(PARAM_ALPHANUMEXT, 'your own id for the message', VALUE_OPTIONAL),
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'errormessage' => new external_value(PARAM_TEXT, 'error message - if it failed', VALUE_OPTIONAL)
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)
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)
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);
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}
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}
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/**
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* Deprecated message functions
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* @deprecated since Moodle 2.2 please use core_message_external instead
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*/
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class moodle_message_external extends external_api {
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/**
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* Returns description of method parameters
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* @deprecated since Moodle 2.2 please use core_message_external::send_instant_messages_parameters instead
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* @return external_function_parameters
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*/
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public static function send_instantmessages_parameters() {
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return core_message_external::send_instant_messages_parameters();
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}
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/**
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* Send private messages from the current USER to other users
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* @deprecated since Moodle 2.2 please use core_message_external::send_instant_messages instead
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* @param $messages An array of message to send.
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* @return boolean
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*/
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public static function send_instantmessages($messages = array()) {
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return core_message_external::send_instant_messages($messages);
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}
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/**
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* Returns description of method result value
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* @deprecated since Moodle 2.2 please use core_message_external::send_instant_messages_returns instead
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* @return external_description
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*/
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public static function send_instantmessages_returns() {
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return core_message_external::send_instant_messages_returns();
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}
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} |