mirrored from git://git.moodle.org/moodle.git
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lib.php
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lib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package mod_forum
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/** Include required files */
require_once(__DIR__ . '/deprecatedlib.php');
require_once($CFG->libdir.'/filelib.php');
/// CONSTANTS ///////////////////////////////////////////////////////////
define('FORUM_MODE_FLATOLDEST', 1);
define('FORUM_MODE_FLATNEWEST', -1);
define('FORUM_MODE_THREADED', 2);
define('FORUM_MODE_NESTED', 3);
define('FORUM_CHOOSESUBSCRIBE', 0);
define('FORUM_FORCESUBSCRIBE', 1);
define('FORUM_INITIALSUBSCRIBE', 2);
define('FORUM_DISALLOWSUBSCRIBE',3);
/**
* FORUM_TRACKING_OFF - Tracking is not available for this forum.
*/
define('FORUM_TRACKING_OFF', 0);
/**
* FORUM_TRACKING_OPTIONAL - Tracking is based on user preference.
*/
define('FORUM_TRACKING_OPTIONAL', 1);
/**
* FORUM_TRACKING_FORCED - Tracking is on, regardless of user setting.
* Treated as FORUM_TRACKING_OPTIONAL if $CFG->forum_allowforcedreadtracking is off.
*/
define('FORUM_TRACKING_FORCED', 2);
define('FORUM_MAILED_PENDING', 0);
define('FORUM_MAILED_SUCCESS', 1);
define('FORUM_MAILED_ERROR', 2);
if (!defined('FORUM_CRON_USER_CACHE')) {
/** Defines how many full user records are cached in forum cron. */
define('FORUM_CRON_USER_CACHE', 5000);
}
/**
* FORUM_POSTS_ALL_USER_GROUPS - All the posts in groups where the user is enrolled.
*/
define('FORUM_POSTS_ALL_USER_GROUPS', -2);
define('FORUM_DISCUSSION_PINNED', 1);
define('FORUM_DISCUSSION_UNPINNED', 0);
/// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will create a new instance and return the id number
* of the new instance.
*
* @param stdClass $forum add forum instance
* @param mod_forum_mod_form $mform
* @return int intance id
*/
function forum_add_instance($forum, $mform = null) {
global $CFG, $DB;
$forum->timemodified = time();
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$forum->id = $DB->insert_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if ($forum->type == 'single') { // Create related discussion.
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = trusttext_trusted(context_course::instance($forum->course));
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
$discussion->id = forum_add_discussion($discussion, null, $message);
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$discussion = $DB->get_record('forum_discussions', array('id'=>$discussion->id), '*', MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
$DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
}
}
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return $forum->id;
}
/**
* Handle changes following the creation of a forum instance.
* This function is typically called by the course_module_created observer.
*
* @param object $context the forum context
* @param stdClass $forum The forum object
* @return void
*/
function forum_instance_created($context, $forum) {
if ($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) {
$users = \mod_forum\subscriptions::get_potential_subscribers($context, 0, 'u.id, u.email');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $context);
}
}
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will update an existing instance with new data.
*
* @global object
* @param object $forum forum instance (with magic quotes)
* @return bool success
*/
function forum_update_instance($forum, $mform) {
global $DB, $OUTPUT, $USER;
$forum->timemodified = time();
$forum->id = $forum->instance;
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$oldforum = $DB->get_record('forum', array('id'=>$forum->id));
// MDL-3942 - if the aggregation type or scale (i.e. max grade) changes then recalculate the grades for the entire forum
// if scale changes - do we need to recheck the ratings, if ratings higher than scale how do we want to respond?
// for count and sum aggregation types the grade we check to make sure they do not exceed the scale (i.e. max score) when calculating the grade
if (($oldforum->assessed<>$forum->assessed) or ($oldforum->scale<>$forum->scale)) {
forum_update_grades($forum); // recalculate grades for the forum
}
if ($forum->type == 'single') { // Update related discussion and post.
$discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id), 'timemodified ASC');
if (!empty($discussions)) {
if (count($discussions) > 1) {
echo $OUTPUT->notification(get_string('warnformorepost', 'forum'));
}
$discussion = array_pop($discussions);
} else {
// try to recover by creating initial discussion - MDL-16262
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = true;
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
forum_add_discussion($discussion, null, $message);
if (! $discussion = $DB->get_record('forum_discussions', array('forum'=>$forum->id))) {
print_error('cannotadd', 'forum');
}
}
if (! $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost))) {
print_error('cannotfindfirstpost', 'forum');
}
$cm = get_coursemodule_from_instance('forum', $forum->id);
$modcontext = context_module::instance($cm->id, MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$post->subject = $forum->name;
$post->message = $forum->intro;
$post->messageformat = $forum->introformat;
$post->messagetrust = trusttext_trusted($modcontext);
$post->modified = $forum->timemodified;
$post->userid = $USER->id; // MDL-18599, so that current teacher can take ownership of activities.
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
}
$DB->update_record('forum_posts', $post);
$discussion->name = $forum->name;
$DB->update_record('forum_discussions', $discussion);
}
$DB->update_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if (($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) && ($oldforum->forcesubscribe <> $forum->forcesubscribe)) {
$users = \mod_forum\subscriptions::get_potential_subscribers($modcontext, 0, 'u.id, u.email', '');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $modcontext);
}
}
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return true;
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @global object
* @param int $id forum instance id
* @return bool success
*/
function forum_delete_instance($id) {
global $DB;
if (!$forum = $DB->get_record('forum', array('id'=>$id))) {
return false;
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
return false;
}
if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
return false;
}
$context = context_module::instance($cm->id);
// now get rid of all files
$fs = get_file_storage();
$fs->delete_area_files($context->id);
$result = true;
\core_completion\api::update_completion_date_event($cm->id, 'forum', $forum->id, null);
// Delete digest and subscription preferences.
$DB->delete_records('forum_digests', array('forum' => $forum->id));
$DB->delete_records('forum_subscriptions', array('forum'=>$forum->id));
$DB->delete_records('forum_discussion_subs', array('forum' => $forum->id));
if ($discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id))) {
foreach ($discussions as $discussion) {
if (!forum_delete_discussion($discussion, true, $course, $cm, $forum)) {
$result = false;
}
}
}
forum_tp_delete_read_records(-1, -1, -1, $forum->id);
if (!$DB->delete_records('forum', array('id'=>$forum->id))) {
$result = false;
}
forum_grade_item_delete($forum);
return $result;
}
/**
* Indicates API features that the forum supports.
*
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_COMPLETION_HAS_RULES
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature
* @return mixed True if yes (some features may use other values)
*/
function forum_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return true;
case FEATURE_GROUPINGS: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_COMPLETION_HAS_RULES: return true;
case FEATURE_GRADE_HAS_GRADE: return true;
case FEATURE_GRADE_OUTCOMES: return true;
case FEATURE_RATE: return true;
case FEATURE_BACKUP_MOODLE2: return true;
case FEATURE_SHOW_DESCRIPTION: return true;
case FEATURE_PLAGIARISM: return true;
default: return null;
}
}
/**
* Obtains the automatic completion state for this forum based on any conditions
* in forum settings.
*
* @global object
* @global object
* @param object $course Course
* @param object $cm Course-module
* @param int $userid User ID
* @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
* @return bool True if completed, false if not. (If no conditions, then return
* value depends on comparison type)
*/
function forum_get_completion_state($course,$cm,$userid,$type) {
global $CFG,$DB;
// Get forum details
if (!($forum=$DB->get_record('forum',array('id'=>$cm->instance)))) {
throw new Exception("Can't find forum {$cm->instance}");
}
$result=$type; // Default return value
$postcountparams=array('userid'=>$userid,'forumid'=>$forum->id);
$postcountsql="
SELECT
COUNT(1)
FROM
{forum_posts} fp
INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
WHERE
fp.userid=:userid AND fd.forum=:forumid";
if ($forum->completiondiscussions) {
$value = $forum->completiondiscussions <=
$DB->count_records('forum_discussions',array('forum'=>$forum->id,'userid'=>$userid));
if ($type == COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
if ($forum->completionreplies) {
$value = $forum->completionreplies <=
$DB->get_field_sql( $postcountsql.' AND fp.parent<>0',$postcountparams);
if ($type==COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
if ($forum->completionposts) {
$value = $forum->completionposts <= $DB->get_field_sql($postcountsql,$postcountparams);
if ($type == COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
return $result;
}
/**
* Create a message-id string to use in the custom headers of forum notification emails
*
* message-id is used by email clients to identify emails and to nest conversations
*
* @param int $postid The ID of the forum post we are notifying the user about
* @param int $usertoid The ID of the user being notified
* @return string A unique message-id
*/
function forum_get_email_message_id($postid, $usertoid) {
return generate_email_messageid(hash('sha256', $postid . 'to' . $usertoid));
}
/**
* Removes properties from user record that are not necessary
* for sending post notifications.
* @param stdClass $user
* @return void, $user parameter is modified
*/
function forum_cron_minimise_user_record(stdClass $user) {
// We store large amount of users in one huge array,
// make sure we do not store info there we do not actually need
// in mail generation code or messaging.
unset($user->institution);
unset($user->department);
unset($user->address);
unset($user->city);
unset($user->url);
unset($user->currentlogin);
unset($user->description);
unset($user->descriptionformat);
}
/**
* Function to be run periodically according to the scheduled task.
*
* Finds all posts that have yet to be mailed out, and mails them
* out to all subscribers as well as other maintance tasks.
*
* NOTE: Since 2.7.2 this function is run by scheduled task rather
* than standard cron.
*
* @todo MDL-44734 The function will be split up into seperate tasks.
*/
function forum_cron() {
global $CFG, $USER, $DB, $PAGE;
$site = get_site();
// The main renderers.
$htmlout = $PAGE->get_renderer('mod_forum', 'email', 'htmlemail');
$textout = $PAGE->get_renderer('mod_forum', 'email', 'textemail');
$htmldigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'htmlemail');
$textdigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'textemail');
$htmldigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'htmlemail');
$textdigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'textemail');
// All users that are subscribed to any post that needs sending,
// please increase $CFG->extramemorylimit on large sites that
// send notifications to a large number of users.
$users = array();
$userscount = 0; // Cached user counter - count($users) in PHP is horribly slow!!!
// Status arrays.
$mailcount = array();
$errorcount = array();
// caches
$discussions = array();
$forums = array();
$courses = array();
$coursemodules = array();
$subscribedusers = array();
$messageinboundhandlers = array();
// Posts older than 2 days will not be mailed. This is to avoid the problem where
// cron has not been running for a long time, and then suddenly people are flooded
// with mail from the past few weeks or months
$timenow = time();
$endtime = $timenow - $CFG->maxeditingtime;
$starttime = $endtime - 48 * 3600; // Two days earlier
// Get the list of forum subscriptions for per-user per-forum maildigest settings.
$digestsset = $DB->get_recordset('forum_digests', null, '', 'id, userid, forum, maildigest');
$digests = array();
foreach ($digestsset as $thisrow) {
if (!isset($digests[$thisrow->forum])) {
$digests[$thisrow->forum] = array();
}
$digests[$thisrow->forum][$thisrow->userid] = $thisrow->maildigest;
}
$digestsset->close();
// Create the generic messageinboundgenerator.
$messageinboundgenerator = new \core\message\inbound\address_manager();
$messageinboundgenerator->set_handler('\mod_forum\message\inbound\reply_handler');
if ($posts = forum_get_unmailed_posts($starttime, $endtime, $timenow)) {
// Mark them all now as being mailed. It's unlikely but possible there
// might be an error later so that a post is NOT actually mailed out,
// but since mail isn't crucial, we can accept this risk. Doing it now
// prevents the risk of duplicated mails, which is a worse problem.
if (!forum_mark_old_posts_as_mailed($endtime)) {
mtrace('Errors occurred while trying to mark some posts as being mailed.');
return false; // Don't continue trying to mail them, in case we are in a cron loop
}
// checking post validity, and adding users to loop through later
foreach ($posts as $pid => $post) {
$discussionid = $post->discussion;
if (!isset($discussions[$discussionid])) {
if ($discussion = $DB->get_record('forum_discussions', array('id'=> $post->discussion))) {
$discussions[$discussionid] = $discussion;
\mod_forum\subscriptions::fill_subscription_cache($discussion->forum);
\mod_forum\subscriptions::fill_discussion_subscription_cache($discussion->forum);
} else {
mtrace('Could not find discussion ' . $discussionid);
unset($posts[$pid]);
continue;
}
}
$forumid = $discussions[$discussionid]->forum;
if (!isset($forums[$forumid])) {
if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
$forums[$forumid] = $forum;
} else {
mtrace('Could not find forum '.$forumid);
unset($posts[$pid]);
continue;
}
}
$courseid = $forums[$forumid]->course;
if (!isset($courses[$courseid])) {
if ($course = $DB->get_record('course', array('id' => $courseid))) {
$courses[$courseid] = $course;
} else {
mtrace('Could not find course '.$courseid);
unset($posts[$pid]);
continue;
}
}
if (!isset($coursemodules[$forumid])) {
if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
$coursemodules[$forumid] = $cm;
} else {
mtrace('Could not find course module for forum '.$forumid);
unset($posts[$pid]);
continue;
}
}
$modcontext = context_module::instance($coursemodules[$forumid]->id);
// Save the Inbound Message datakey here to reduce DB queries later.
$messageinboundgenerator->set_data($pid);
$messageinboundhandlers[$pid] = $messageinboundgenerator->fetch_data_key();
// Caching subscribed users of each forum.
if (!isset($subscribedusers[$forumid])) {
if ($subusers = \mod_forum\subscriptions::fetch_subscribed_users($forums[$forumid], 0, $modcontext, 'u.*', true)) {
foreach ($subusers as $postuser) {
// this user is subscribed to this forum
$subscribedusers[$forumid][$postuser->id] = $postuser->id;
$userscount++;
if ($userscount > FORUM_CRON_USER_CACHE) {
// Store minimal user info.
$minuser = new stdClass();
$minuser->id = $postuser->id;
$users[$postuser->id] = $minuser;
} else {
// Cache full user record.
forum_cron_minimise_user_record($postuser);
$users[$postuser->id] = $postuser;
}
}
// Release memory.
unset($subusers);
unset($postuser);
}
}
$mailcount[$pid] = 0;
$errorcount[$pid] = 0;
}
}
if ($users && $posts) {
foreach ($users as $userto) {
// Terminate if processing of any account takes longer than 2 minutes.
core_php_time_limit::raise(120);
mtrace('Processing user ' . $userto->id);
// Init user caches - we keep the cache for one cycle only, otherwise it could consume too much memory.
if (isset($userto->username)) {
$userto = clone($userto);
} else {
$userto = $DB->get_record('user', array('id' => $userto->id));
forum_cron_minimise_user_record($userto);
}
$userto->viewfullnames = array();
$userto->canpost = array();
$userto->markposts = array();
// Setup this user so that the capabilities are cached, and environment matches receiving user.
cron_setup_user($userto);
// Reset the caches.
foreach ($coursemodules as $forumid => $unused) {
$coursemodules[$forumid]->cache = new stdClass();
$coursemodules[$forumid]->cache->caps = array();
unset($coursemodules[$forumid]->uservisible);
}
foreach ($posts as $pid => $post) {
$discussion = $discussions[$post->discussion];
$forum = $forums[$discussion->forum];
$course = $courses[$forum->course];
$cm =& $coursemodules[$forum->id];
// Do some checks to see if we can bail out now.
// Only active enrolled users are in the list of subscribers.
// This does not necessarily mean that the user is subscribed to the forum or to the discussion though.
if (!isset($subscribedusers[$forum->id][$userto->id])) {
// The user does not subscribe to this forum.
continue;
}
if (!\mod_forum\subscriptions::is_subscribed($userto->id, $forum, $post->discussion, $coursemodules[$forum->id])) {
// The user does not subscribe to this forum, or to this specific discussion.
continue;
}
if ($subscriptiontime = \mod_forum\subscriptions::fetch_discussion_subscription($forum->id, $userto->id)) {
// Skip posts if the user subscribed to the discussion after it was created.
if (isset($subscriptiontime[$post->discussion]) && ($subscriptiontime[$post->discussion] > $post->created)) {
continue;
}
}
// Don't send email if the forum is Q&A and the user has not posted.
// Initial topics are still mailed.
if ($forum->type == 'qanda' && !forum_get_user_posted_time($discussion->id, $userto->id) && $pid != $discussion->firstpost) {
mtrace('Did not email ' . $userto->id.' because user has not posted in discussion');
continue;
}
// Get info about the sending user.
if (array_key_exists($post->userid, $users)) {
// We might know the user already.
$userfrom = $users[$post->userid];
if (!isset($userfrom->idnumber)) {
// Minimalised user info, fetch full record.
$userfrom = $DB->get_record('user', array('id' => $userfrom->id));
forum_cron_minimise_user_record($userfrom);
}
} else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
forum_cron_minimise_user_record($userfrom);
// Fetch only once if possible, we can add it to user list, it will be skipped anyway.
if ($userscount <= FORUM_CRON_USER_CACHE) {
$userscount++;
$users[$userfrom->id] = $userfrom;
}
} else {
mtrace('Could not find user ' . $post->userid . ', author of post ' . $post->id . '. Unable to send message.');
continue;
}
// Note: If we want to check that userto and userfrom are not the same person this is probably the spot to do it.
// Setup global $COURSE properly - needed for roles and languages.
cron_setup_user($userto, $course);
// Fill caches.
if (!isset($userto->viewfullnames[$forum->id])) {
$modcontext = context_module::instance($cm->id);
$userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
}
if (!isset($userto->canpost[$discussion->id])) {
$modcontext = context_module::instance($cm->id);
$userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
}
if (!isset($userfrom->groups[$forum->id])) {
if (!isset($userfrom->groups)) {
$userfrom->groups = array();
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups = array();
}
}
$userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
}
}
// Make sure groups allow this user to see this email.
if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) {
// Groups are being used.
if (!groups_group_exists($discussion->groupid)) {
// Can't find group - be safe and don't this message.
continue;
}
if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $modcontext)) {
// Do not send posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS.
continue;
}
}
// Make sure we're allowed to see the post.
if (!forum_user_can_see_post($forum, $discussion, $post, null, $cm)) {
mtrace('User ' . $userto->id .' can not see ' . $post->id . '. Not sending message.');
continue;
}
// OK so we need to send the email.
// Does the user want this post in a digest? If so postpone it for now.
$maildigest = forum_get_user_maildigest_bulk($digests, $userto, $forum->id);
if ($maildigest > 0) {
// This user wants the mails to be in digest form.
$queue = new stdClass();
$queue->userid = $userto->id;
$queue->discussionid = $discussion->id;
$queue->postid = $post->id;
$queue->timemodified = $post->created;
$DB->insert_record('forum_queue', $queue);
continue;
}
// Prepare to actually send the post now, and build up the content.
$cleanforumname = str_replace('"', "'", strip_tags(format_string($forum->name)));
$userfrom->customheaders = array (
// Headers to make emails easier to track.
'List-Id: "' . $cleanforumname . '" ' . generate_email_messageid('moodleforum' . $forum->id),
'List-Help: ' . $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id,
'Message-ID: ' . forum_get_email_message_id($post->id, $userto->id),
'X-Course-Id: ' . $course->id,
'X-Course-Name: ' . format_string($course->fullname, true),
// Headers to help prevent auto-responders.
'Precedence: Bulk',
'X-Auto-Response-Suppress: All',
'Auto-Submitted: auto-generated',
);
$shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
// Generate a reply-to address from using the Inbound Message handler.
$replyaddress = null;
if ($userto->canpost[$discussion->id] && array_key_exists($post->id, $messageinboundhandlers)) {
$messageinboundgenerator->set_data($post->id, $messageinboundhandlers[$post->id]);
$replyaddress = $messageinboundgenerator->generate($userto->id);
}
if (!isset($userto->canpost[$discussion->id])) {
$canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
} else {
$canreply = $userto->canpost[$discussion->id];
}
$data = new \mod_forum\output\forum_post_email(
$course,
$cm,
$forum,
$discussion,
$post,
$userfrom,
$userto,
$canreply
);
$userfrom->customheaders[] = sprintf('List-Unsubscribe: <%s>',
$data->get_unsubscribediscussionlink());
if (!isset($userto->viewfullnames[$forum->id])) {
$data->viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
} else {
$data->viewfullnames = $userto->viewfullnames[$forum->id];
}
// Not all of these variables are used in the default language
// string but are made available to support custom subjects.
$a = new stdClass();
$a->subject = $data->get_subject();
$a->forumname = $cleanforumname;
$a->sitefullname = format_string($site->fullname);
$a->siteshortname = format_string($site->shortname);
$a->courseidnumber = $data->get_courseidnumber();
$a->coursefullname = $data->get_coursefullname();
$a->courseshortname = $data->get_coursename();
$postsubject = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
$rootid = forum_get_email_message_id($discussion->firstpost, $userto->id);
if ($post->parent) {
// This post is a reply, so add reply header (RFC 2822).
$parentid = forum_get_email_message_id($post->parent, $userto->id);
$userfrom->customheaders[] = "In-Reply-To: $parentid";
// If the post is deeply nested we also reference the parent message id and
// the root message id (if different) to aid threading when parts of the email
// conversation have been deleted (RFC1036).
if ($post->parent != $discussion->firstpost) {
$userfrom->customheaders[] = "References: $rootid $parentid";
} else {
$userfrom->customheaders[] = "References: $parentid";
}
}
// MS Outlook / Office uses poorly documented and non standard headers, including
// Thread-Topic which overrides the Subject and shouldn't contain Re: or Fwd: etc.
$a->subject = $discussion->name;
$threadtopic = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
$userfrom->customheaders[] = "Thread-Topic: $threadtopic";
$userfrom->customheaders[] = "Thread-Index: " . substr($rootid, 1, 28);
// Send the post now!
mtrace('Sending ', '');
$eventdata = new \core\message\message();
$eventdata->courseid = $course->id;
$eventdata->component = 'mod_forum';
$eventdata->name = 'posts';
$eventdata->userfrom = $userfrom;
$eventdata->userto = $userto;
$eventdata->subject = $postsubject;
$eventdata->fullmessage = $textout->render($data);
$eventdata->fullmessageformat = FORMAT_PLAIN;
$eventdata->fullmessagehtml = $htmlout->render($data);
$eventdata->notification = 1;
$eventdata->replyto = $replyaddress;
if (!empty($replyaddress)) {
// Add extra text to email messages if they can reply back.
$textfooter = "\n\n" . get_string('replytopostbyemail', 'mod_forum');
$htmlfooter = html_writer::tag('p', get_string('replytopostbyemail', 'mod_forum'));
$additionalcontent = array('fullmessage' => array('footer' => $textfooter),
'fullmessagehtml' => array('footer' => $htmlfooter));
$eventdata->set_additional_content('email', $additionalcontent);
}
$smallmessagestrings = new stdClass();
$smallmessagestrings->user = fullname($userfrom);
$smallmessagestrings->forumname = "$shortname: " . format_string($forum->name, true) . ": " . $discussion->name;
$smallmessagestrings->message = $post->message;
// Make sure strings are in message recipients language.
$eventdata->smallmessage = get_string_manager()->get_string('smallmessage', 'forum', $smallmessagestrings, $userto->lang);
$contexturl = new moodle_url('/mod/forum/discuss.php', array('d' => $discussion->id), 'p' . $post->id);
$eventdata->contexturl = $contexturl->out();
$eventdata->contexturlname = $discussion->name;
$mailresult = message_send($eventdata);
if (!$mailresult) {
mtrace("Error: mod/forum/lib.php forum_cron(): Could not send out mail for id $post->id to user $userto->id".
" ($userto->email) .. not trying again.");
$errorcount[$post->id]++;
} else {
$mailcount[$post->id]++;
// Mark post as read if forum_usermarksread is set off.
if (!$CFG->forum_usermarksread) {
$userto->markposts[$post->id] = $post->id;
}
}
mtrace('post ' . $post->id . ': ' . $post->subject);
}
// Mark processed posts as read.
if (get_user_preferences('forum_markasreadonnotification', 1, $userto->id) == 1) {
forum_tp_mark_posts_read($userto, $userto->markposts);
}
unset($userto);
}
}
if ($posts) {
foreach ($posts as $post) {
mtrace($mailcount[$post->id]." users were sent post $post->id, '$post->subject'");
if ($errorcount[$post->id]) {
$DB->set_field('forum_posts', 'mailed', FORUM_MAILED_ERROR, array('id' => $post->id));
}
}
}
// release some memory
unset($subscribedusers);
unset($mailcount);
unset($errorcount);
cron_setup_user();
$sitetimezone = core_date::get_server_timezone();
// Now see if there are any digest mails waiting to be sent, and if we should send them
mtrace('Starting digest processing...');
core_php_time_limit::raise(300); // terminate if not able to fetch all digests in 5 minutes
if (!isset($CFG->digestmailtimelast)) { // To catch the first time
set_config('digestmailtimelast', 0);
}
$timenow = time();
$digesttime = usergetmidnight($timenow, $sitetimezone) + ($CFG->digestmailtime * 3600);
// Delete any really old ones (normally there shouldn't be any)
$weekago = $timenow - (7 * 24 * 3600);
$DB->delete_records_select('forum_queue', "timemodified < ?", array($weekago));
mtrace ('Cleaned old digest records');
if ($CFG->digestmailtimelast < $digesttime and $timenow > $digesttime) {
mtrace('Sending forum digests: '.userdate($timenow, '', $sitetimezone));
$digestposts_rs = $DB->get_recordset_select('forum_queue', "timemodified < ?", array($digesttime));
if ($digestposts_rs->valid()) {
// We have work to do
$usermailcount = 0;
//caches - reuse the those filled before too
$discussionposts = array();
$userdiscussions = array();
foreach ($digestposts_rs as $digestpost) {
if (!isset($posts[$digestpost->postid])) {
if ($post = $DB->get_record('forum_posts', array('id' => $digestpost->postid))) {
$posts[$digestpost->postid] = $post;
} else {
continue;
}
}
$discussionid = $digestpost->discussionid;
if (!isset($discussions[$discussionid])) {
if ($discussion = $DB->get_record('forum_discussions', array('id' => $discussionid))) {
$discussions[$discussionid] = $discussion;
} else {
continue;
}
}
$forumid = $discussions[$discussionid]->forum;
if (!isset($forums[$forumid])) {
if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
$forums[$forumid] = $forum;
} else {
continue;
}
}
$courseid = $forums[$forumid]->course;
if (!isset($courses[$courseid])) {
if ($course = $DB->get_record('course', array('id' => $courseid))) {
$courses[$courseid] = $course;
} else {
continue;
}
}
if (!isset($coursemodules[$forumid])) {
if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
$coursemodules[$forumid] = $cm;
} else {
continue;
}
}
$userdiscussions[$digestpost->userid][$digestpost->discussionid] = $digestpost->discussionid;
$discussionposts[$digestpost->discussionid][$digestpost->postid] = $digestpost->postid;
}
$digestposts_rs->close(); /// Finished iteration, let's close the resultset
// Data collected, start sending out emails to each user