mirror of
https://github.com/moodle/moodle.git
synced 2025-01-18 14:03:52 +01:00
1052 lines
40 KiB
PHP
1052 lines
40 KiB
PHP
<?php
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/// library functions for messaging
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define ('MESSAGE_SHORTLENGTH', 300);
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define ('MESSAGE_WINDOW', true); // We are in a message window (so don't pop up a new one!)
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if (!isset($CFG->message_contacts_refresh)) { // Refresh the contacts list every 60 seconds
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$CFG->message_contacts_refresh = 60;
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}
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if (!isset($CFG->message_chat_refresh)) { // Look for new comments every 5 seconds
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$CFG->message_chat_refresh = 5;
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}
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if (!isset($CFG->message_offline_time)) {
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$CFG->message_offline_time = 300;
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}
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function message_print_contacts() {
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global $USER, $CFG;
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$timetoshowusers = 300; //Seconds default
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if (isset($CFG->block_online_users_timetosee)) {
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$timetoshowusers = $CFG->block_online_users_timetosee * 60;
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}
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$timefrom = time()-$timetoshowusers;
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/// get lists of contacts and unread messages
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$onlinecontacts = get_records_sql("SELECT u.id, u.firstname, u.lastname, u.picture, mc.blocked
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FROM {$CFG->prefix}user u, {$CFG->prefix}message_contacts mc
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WHERE mc.userid='$USER->id' AND u.id=mc.contactid AND u.lastaccess>=$timefrom
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AND mc.blocked='0'
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ORDER BY u.firstname ASC");
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$offlinecontacts = get_records_sql("SELECT u.id, u.firstname, u.lastname, u.picture, mc.blocked
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FROM {$CFG->prefix}user u, {$CFG->prefix}message_contacts mc
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WHERE mc.userid='$USER->id' AND u.id=mc.contactid AND u.lastaccess<$timefrom
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AND mc.blocked='0'
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ORDER BY u.firstname ASC");
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$unreadmessages = get_records_sql("SELECT m.id, m.useridfrom, u.firstname, u.lastname, u.picture
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FROM {$CFG->prefix}user u, {$CFG->prefix}message m
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WHERE m.useridto='$USER->id' AND u.id=m.useridfrom");
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$blockedcontacts = get_records_select('message_contacts', "userid='$USER->id' AND blocked='1'", '', 'contactid, id');
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$countonlinecontacts = (is_array($onlinecontacts)) ? count($onlinecontacts) : 0;
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$countofflinecontacts = (is_array($offlinecontacts)) ? count($offlinecontacts) : 0;
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/// Cycle through messages and extract those that are from unknown contacts
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/// We can take advantage of the keys for $onlinecontacts and $offlinecontacts
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/// which are set to the userid and therefore we just need to see if the key
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/// exists in either of those arrays
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/// We can also discard any messages from users in our blocked contact list
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$unknownmessages = array();
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if (!empty($unreadmessages)) {
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/// make sure we have valid arrays to test against - they may be boolean false
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if (empty($onlinecontacts)) $onlinecontacts = array();
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if (empty($offlinecontacts)) $offlinecontacts = array();
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if (empty($blockedcontacts)) $blockedcontacts = array();
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foreach ($unreadmessages as $unreadmessage) {
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if (array_key_exists($unreadmessage->useridfrom, $onlinecontacts) or
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array_key_exists($unreadmessage->useridfrom, $offlinecontacts) or
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array_key_exists($unreadmessage->useridfrom, $blockedcontacts) ) {
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continue;
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}
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if (!isset($unknownmessages[$unreadmessage->useridfrom])) {
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$message = $unreadmessage;
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$message->count = 1;
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$unknownmessages[$unreadmessage->useridfrom] = $message;
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} else {
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$unknownmessages[$unreadmessage->useridfrom]->count++;
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}
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}
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}
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if ($countonlinecontacts + $countofflinecontacts == 0) {
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echo '<div class="heading">';
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print_string('contactlistempty', 'message');
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echo '</div>';
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echo '<div class="note">';
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print_string('addsomecontacts', 'message', $CFG->wwwroot.'/message/index.php?tab=search');
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echo '</div>';
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}
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if(!empty($onlinecontacts) || !empty($offlinecontacts) || !empty($unknownmessages)) {
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echo '<table id="message_contacts" align="center" cellspacing="2" cellpadding="0" border="0">';
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if(!empty($onlinecontacts)) {
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/// print out list of online contacts
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echo '<tr><td colspan="3" class="heading">';
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echo get_string('onlinecontacts', 'message', $countonlinecontacts);
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echo '</td></tr>';
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if (!empty($onlinecontacts)) {
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foreach ($onlinecontacts as $contact) {
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if ($contact->blocked == 1) continue;
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$fullname = fullname($contact);
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$fullnamelink = $fullname;
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/// are there any unread messages for this contact?
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if (($unread = message_count_messages($unreadmessages, 'useridfrom', $contact->id)) > 0) {
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$fullnamelink = '<strong>'.$fullnamelink.' ('.$unread.')</strong>';
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}
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/// link to remove from contact list
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$strcontact = message_contact_link($contact->id, 'remove', true);
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$strhistory = message_history_link($contact->id, 0, true, '', '', 'icon');
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echo '<tr><td class="pix">';
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print_user_picture($contact->id, SITEID, $contact->picture, 20, false, true, 'userwindow');
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echo '</td>';
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echo '<td class="contact">';
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link_to_popup_window("/message/discussion.php?id=$contact->id", "message_$contact->id",
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$fullnamelink, 500, 500, get_string('sendmessageto', 'message', $fullname),
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'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500');
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echo '</td>';
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echo '<td class="link">'.$strcontact.' '.$strhistory.'</td>';
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echo '</tr>';
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}
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}
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echo '<tr><td colspan="3"> </td></tr>';
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}
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if (!empty($offlinecontacts)) {
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/// print out list of offline contacts
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echo '<tr><td colspan="3" class="heading">';
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echo get_string('offlinecontacts', 'message', $countofflinecontacts);
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echo '</td></tr>';
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foreach ($offlinecontacts as $contact) {
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if ($contact->blocked == 1) continue;
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$fullname = fullname($contact);
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$fullnamelink = $fullname;
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/// are there any unread messages for this contact?
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if (($unread = message_count_messages($unreadmessages, 'useridfrom', $contact->id)) > 0) {
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$fullnamelink = '<strong>'.$fullnamelink.' ('.$unread.')</strong>';
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}
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/// link to remove from contact list
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$strcontact = message_contact_link($contact->id, 'remove', true);
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$strhistory = message_history_link($contact->id, 0, true, '', '', 'icon');
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echo '<tr><td class="pix">';
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print_user_picture($contact->id, SITEID, $contact->picture, 20, false, true, 'userwindow');
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echo '</td>';
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echo '<td class="contact">';
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link_to_popup_window("/message/discussion.php?id=$contact->id", "message_$contact->id",
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$fullnamelink, 500, 500, get_string('sendmessageto', 'message', $fullname),
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'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500');
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echo '</td>';
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echo '<td class="link">'.$strcontact.' '.$strhistory.'</td>';
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echo '</tr>';
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}
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echo '<tr><td colspan="3"> </td></tr>';
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}
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/// print out list of incoming contacts
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if (!empty($unknownmessages)) {
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echo '<tr><td colspan="3" class="heading">';
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echo get_string('incomingcontacts', 'message', count($unknownmessages));
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echo '</td></tr>';
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foreach ($unknownmessages as $messageuser) {
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$fullname = fullname($messageuser);
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$fullnamelink = $fullname;
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if ($messageuser->count) {
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$fullnamelink = '<strong>'.$fullnamelink.' ('.$messageuser->count.')</strong>';
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}
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/// link to add to contact list
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$strcontact = message_contact_link($messageuser->useridfrom, 'add', true);
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$strblock = message_contact_link($messageuser->useridfrom, 'block', true);
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$strhistory = message_history_link($messageuser->useridfrom, 0, true, '', '', 'icon');
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echo '<tr><td class="pix">';
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print_user_picture($messageuser->useridfrom, SITEID, $messageuser->picture, 20, false, true, 'userwindow');
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echo '</td>';
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echo '<td class="contact">';
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link_to_popup_window("/message/discussion.php?id=$messageuser->useridfrom", "message_$messageuser->useridfrom",
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$fullnamelink, 500, 500, get_string('sendmessageto', 'message', $fullname),
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'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500');
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echo '</td>';
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echo '<td class="link"> '.$strcontact.' '.$strblock.' '.$strhistory.'</td>';
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echo '</tr>';
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}
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}
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echo '</table>';
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if (!empty($unknownmessages) && ($countonlinecontacts + $countofflinecontacts == 0)) { // Extra help
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echo '<div class="note">(';
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print_string('addsomecontactsincoming', 'message');
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echo ')</div>';
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}
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}
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echo '<br />';
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$autorefresh = '<p align="center" class="note">'.get_string('pagerefreshes', 'message', $CFG->message_contacts_refresh).'</p>';
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$autorefresh = addslashes_js($autorefresh); // js escaping
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// gracefully degrade JS autorefresh
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echo '<script type="text/javascript">
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//<![CDATA[
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document.write("'.$autorefresh.'")
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//]]>
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</script>';
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echo '<noscript><div align="center">';
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echo print_single_button('index.php', false, get_string('refresh'));
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echo '</div></noscript>';
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}
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/// $messagearray is an array of objects
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/// $field is a valid property of object
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/// $value is the value $field should equal to be counted
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/// if $field is empty then return count of the whole array
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/// if $field is non-existent then return 0;
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function message_count_messages($messagearray, $field='', $value='') {
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if (!is_array($messagearray)) return 0;
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if ($field == '' or empty($messagearray)) return count($messagearray);
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$count = 0;
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foreach ($messagearray as $message) {
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$count += ($message->$field == $value) ? 1 : 0;
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}
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return $count;
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}
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function message_print_search() {
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global $USER;
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if ($frm = data_submitted()) {
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message_print_search_results($frm);
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} else {
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/*
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/// unfinished buggy code disabled in search.html anyway
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// find all courses this use has readallmessages capabilities in
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if ($teachers = get_user_capability_course('moodle/site:readallmessages')) {
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$courses = get_courses('all', 'c.sortorder ASC', 'c.id, c.shortname');
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$cs = '<select name="courseselect">';
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foreach ($teachers as $tcourse) {
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$cs .= "<option value=\"$tcourse->course\">".$courses[$tcourse->id]->shortname."</option>\n";
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}
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$cs .= '</select>';
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}
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*/
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include('search.html');
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}
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}
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function message_print_settings() {
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global $USER;
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if ($frm = data_submitted()) {
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$pref = array();
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$pref['message_showmessagewindow'] = (isset($frm->showmessagewindow)) ? '1' : '0';
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$pref['message_beepnewmessage'] = (isset($frm->beepnewmessage)) ? '1' : '0';
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$pref['message_blocknoncontacts'] = (isset($frm->blocknoncontacts)) ? '1' : '0';
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$pref['message_usehtmleditor'] = (isset($frm->usehtmleditor)) ? '1' : '0';
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$pref['message_noframesjs'] = (isset($frm->noframesjs)) ? '1' : '0';
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$pref['message_emailmessages'] = (isset($frm->emailmessages)) ? '1' : '0';
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$pref['message_emailtimenosee'] = ((int)$frm->emailtimenosee > 0) ? (int)$frm->emailtimenosee : '10';
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$pref['message_emailaddress'] = (!empty($frm->emailaddress)) ? $frm->emailaddress : $USER->email;
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$pref['message_emailformat'] = (isset($frm->emailformat)) ? $frm->emailformat : FORMAT_PLAIN;
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set_user_preferences($pref);
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redirect('index.php', get_string('settingssaved', 'message'), 1);
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}
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$cbshowmessagewindow = (get_user_preferences('message_showmessagewindow', 1) == '1') ? 'checked="checked"' : '';
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$cbbeepnewmessage = (get_user_preferences('message_beepnewmessage', 0) == '1') ? 'checked="checked"' : '';
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$cbblocknoncontacts = (get_user_preferences('message_blocknoncontacts', 0) == '1') ? 'checked="checked"' : '';
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$cbusehtmleditor = (get_user_preferences('message_usehtmleditor', 0) == '1') ? 'checked="checked"' : '';
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$cbnoframesjs = (get_user_preferences('message_noframesjs', 0) == '1') ? 'checked="checked"' : '';
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$cbemailmessages = (get_user_preferences('message_emailmessages', 1) == '1') ? 'checked="checked"' : '';
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$txemailaddress = get_user_preferences('message_emailaddress', $USER->email);
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$txemailtimenosee = get_user_preferences('message_emailtimenosee', 10);
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$format_select = choose_from_menu( array(FORMAT_PLAIN => get_string('formatplain'),
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FORMAT_HTML => get_string('formathtml')),
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'emailformat',
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get_user_preferences('message_emailformat', FORMAT_PLAIN),
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false, '', '0', true );
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include('settings.html');
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}
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function message_add_contact($contactid, $blocked=0) {
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global $USER;
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if (!record_exists('user', 'id', $contactid)) { // invalid userid
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return false;
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}
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if (($contact = get_record('message_contacts', 'userid', $USER->id, 'contactid', $contactid)) !== false) {
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/// record already exists - we may be changing blocking status
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if ($contact->blocked !== $blocked) {
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/// change to blocking status
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$contact->blocked = $blocked;
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return update_record('message_contacts', $contact);
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} else {
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/// no changes to blocking status
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return true;
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}
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} else {
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/// new contact record
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unset($contact);
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$contact->userid = $USER->id;
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$contact->contactid = $contactid;
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$contact->blocked = $blocked;
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return insert_record('message_contacts', $contact, false);
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}
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}
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function message_remove_contact($contactid) {
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global $USER;
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return delete_records('message_contacts', 'userid', $USER->id, 'contactid', $contactid);
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}
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function message_unblock_contact($contactid) {
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global $USER;
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return delete_records('message_contacts', 'userid', $USER->id, 'contactid', $contactid);
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}
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function message_block_contact($contactid) {
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return message_add_contact($contactid, 1);
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}
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function message_get_contact($contactid) {
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global $USER;
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return get_record('message_contacts', 'userid', $USER->id, 'contactid', $contactid);
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}
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function message_print_search_results($frm) {
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global $USER, $CFG;
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echo '<div align="center">';
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/// search for person
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if (!empty($frm->personsubmit) and !empty($frm->name)) {
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if (optional_param('mycourses', 0, PARAM_BOOL)) {
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$users = array();
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$mycourses = get_my_courses($USER->id);
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foreach ($mycourses as $mycourse) {
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if (is_array($susers = message_search_users($mycourse->id, $frm->name))) {
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foreach ($susers as $suser) $users[$suser->id] = $suser;
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}
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}
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} else {
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$users = message_search_users(SITEID, $frm->name);
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}
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if (!empty($users)) {
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echo '<strong>'.get_string('userssearchresults', 'message', count($users)).'</strong>';
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echo '<table class="message_users">';
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foreach ($users as $user) {
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if (($contact = message_get_contact($user->id)) !== false) {
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if ($contact->blocked == 0) { /// not blocked
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$strcontact = message_contact_link($user->id, 'remove', true);
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$strblock = message_contact_link($user->id, 'block', true);
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} else { // blocked
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$strcontact = message_contact_link($user->id, 'add', true);
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$strblock = message_contact_link($user->id, 'unblock', true);
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}
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} else {
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$strcontact = message_contact_link($user->id, 'add', true);
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$strblock = message_contact_link($user->id, 'block', true);
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}
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$strhistory = message_history_link($user->id, 0, true, '', '', 'icon');
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echo '<tr><td class="pix">';
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print_user_picture($user->id, SITEID, $user->picture, 20, false, true, 'userwindow');
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echo '</td>';
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echo '<td class="contact">';
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link_to_popup_window("/message/discussion.php?id=$user->id", "message_$user->id", fullname($user),
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500, 500, get_string('sendmessageto', 'message', fullname($user)),
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'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500');
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echo '</td>';
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echo '<td class="link">'.$strcontact.'</td>';
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echo '<td class="link">'.$strblock.'</td>';
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echo '<td class="link">'.$strhistory.'</td>';
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echo '</tr>';
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}
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echo '</table>';
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} else {
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notify(get_string('nosearchresults', 'message'));
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}
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/// search messages for keywords
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} else if (!empty($frm->keywordssubmit) and !empty($frm->keywords)) {
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$keywordstring = clean_text(trim($frm->keywords));
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$keywords = explode(' ', $keywordstring);
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$tome = false;
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$fromme = false;
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$courseid = 'none';
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switch ($frm->keywordsoption) {
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case 'tome':
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$tome = true;
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break;
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case 'fromme':
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$fromme = true;
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break;
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case 'allmine':
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$tome = true;
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$fromme = true;
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break;
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case 'allusers':
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$courseid = SITEID;
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break;
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case 'courseusers':
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$courseid = $frm->courseid;
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break;
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default:
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$tome = true;
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$fromme = true;
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}
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if (($messages = message_search($keywords, $fromme, $tome, $courseid)) !== false) {
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/// get a list of contacts
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if (($contacts = get_records('message_contacts', 'userid', $USER->id, '', 'contactid, blocked') ) === false) {
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$contacts = array();
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}
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/// print heading with number of results
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echo '<p class="heading">'.get_string('keywordssearchresults', 'message', count($messages)).' ("'.s($keywordstring).'")</p>';
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/// print table headings
|
|
echo '<table class="searchresults" cellspacing="0">';
|
|
echo '<tr>';
|
|
echo '<td><strong>'.get_string('from').'</strong></td>';
|
|
echo '<td><strong>'.get_string('to').'</strong></td>';
|
|
echo '<td><strong>'.get_string('message', 'message').'</strong></td>';
|
|
echo '<td><strong>'.get_string('timesent', 'message').'</strong></td>';
|
|
echo "</tr>\n";
|
|
|
|
$blockedcount = 0;
|
|
$dateformat = get_string('strftimedatetime');
|
|
$strcontext = get_string('context', 'message');
|
|
foreach ($messages as $message) {
|
|
|
|
/// ignore messages to and from blocked users unless $frm->includeblocked is set
|
|
if (!optional_param('includeblocked', 0, PARAM_BOOL) and (
|
|
( isset($contacts[$message->useridfrom]) and ($contacts[$message->useridfrom]->blocked == 1)) or
|
|
( isset($contacts[$message->useridto] ) and ($contacts[$message->useridto]->blocked == 1))
|
|
)
|
|
) {
|
|
$blockedcount ++;
|
|
continue;
|
|
}
|
|
|
|
/// load up user to record
|
|
if ($message->useridto !== $USER->id) {
|
|
$userto = get_record('user', 'id', $message->useridto);
|
|
$tocontact = (array_key_exists($message->useridto, $contacts) and
|
|
($contacts[$message->useridto]->blocked == 0) );
|
|
$toblocked = (array_key_exists($message->useridto, $contacts) and
|
|
($contacts[$message->useridto]->blocked == 1) );
|
|
} else {
|
|
$userto = false;
|
|
$tocontact = false;
|
|
$toblocked = false;
|
|
}
|
|
|
|
/// load up user from record
|
|
if ($message->useridfrom !== $USER->id) {
|
|
$userfrom = get_record('user', 'id', $message->useridfrom);
|
|
$fromcontact = (array_key_exists($message->useridfrom, $contacts) and
|
|
($contacts[$message->useridfrom]->blocked == 0) );
|
|
$fromblocked = (array_key_exists($message->useridfrom, $contacts) and
|
|
($contacts[$message->useridfrom]->blocked == 1) );
|
|
} else {
|
|
$userfrom = false;
|
|
$fromcontact = false;
|
|
$fromblocked = false;
|
|
}
|
|
|
|
/// find date string for this message
|
|
$date = usergetdate($message->timecreated);
|
|
$datestring = $date['year'].$date['mon'].$date['mday'];
|
|
|
|
/// print out message row
|
|
echo '<tr valign="top">';
|
|
echo '<td class="contact">';
|
|
message_print_user($userfrom, $fromcontact, $fromblocked);
|
|
echo '</td>';
|
|
echo '<td class="contact">';
|
|
message_print_user($userto, $tocontact, $toblocked);
|
|
echo '</td>';
|
|
echo '<td class="summary">'.message_get_fragment($message->message, $keywords);
|
|
echo '<br /><div class="link">';
|
|
message_history_link($message->useridto, $message->useridfrom, false,
|
|
$keywordstring, 'm'.$message->id, $strcontext);
|
|
echo '</div>';
|
|
echo '</td>';
|
|
echo '<td class="date">'.userdate($message->timecreated, $dateformat).'</td>';
|
|
echo "</tr>\n";
|
|
}
|
|
|
|
|
|
if ($blockedcount > 0) {
|
|
echo '<tr><td colspan="4" align="center">'.get_string('blockedmessages', 'message', $blockedcount).'</td></tr>';
|
|
}
|
|
echo '</table>';
|
|
|
|
} else {
|
|
notify(get_string('nosearchresults', 'message'));
|
|
}
|
|
|
|
|
|
/// what the ????, probably an empty search string, duh!
|
|
} else {
|
|
notify(get_string('emptysearchstring', 'message'));
|
|
}
|
|
|
|
echo '<br />';
|
|
print_single_button('index.php', array( 'tab' => 'search'), get_string('newsearch', 'message') );
|
|
|
|
echo '</div>';
|
|
}
|
|
|
|
|
|
function message_print_user ($user=false, $iscontact=false, $isblocked=false) {
|
|
global $USER;
|
|
if ($user === false) {
|
|
print_user_picture($USER->id, SITEID, $USER->picture, 20, false, true, 'userwindow');
|
|
} else {
|
|
print_user_picture($user->id, SITEID, $user->picture, 20, false, true, 'userwindow');
|
|
echo ' ';
|
|
if ($iscontact) {
|
|
message_contact_link($user->id, 'remove');
|
|
} else {
|
|
message_contact_link($user->id, 'add');
|
|
}
|
|
echo ' ';
|
|
if ($isblocked) {
|
|
message_contact_link($user->id, 'unblock');
|
|
} else {
|
|
message_contact_link($user->id, 'block');
|
|
}
|
|
echo '<br />';
|
|
link_to_popup_window("/message/discussion.php?id=$user->id", "message_$user->id",
|
|
fullname($user), 400, 400, get_string('sendmessageto', 'message', fullname($user)),
|
|
'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500');
|
|
}
|
|
}
|
|
|
|
|
|
/// linktype can be: add, remove, block, unblock
|
|
function message_contact_link($userid, $linktype='add', $return=false, $script="index.php?tab=contacts", $text=false) {
|
|
global $USER, $CFG;
|
|
|
|
static $str;
|
|
|
|
if (empty($str->blockcontact)) {
|
|
$str->blockcontact = get_string('blockcontact', 'message');
|
|
$str->unblockcontact = get_string('unblockcontact', 'message');
|
|
$str->removecontact = get_string('removecontact', 'message');
|
|
$str->addcontact = get_string('addcontact', 'message');
|
|
}
|
|
|
|
$command = $linktype.'contact';
|
|
$string = $str->{$command};
|
|
$alttext = $text ? '' : $string;
|
|
$text = $text ? ' '.$string : '';
|
|
|
|
switch ($linktype) {
|
|
case 'block':
|
|
$icon = '/t/go.gif';
|
|
break;
|
|
case 'unblock':
|
|
$icon = '/t/stop.gif';
|
|
break;
|
|
case 'remove':
|
|
$icon = '/t/user.gif';
|
|
break;
|
|
case 'add':
|
|
default:
|
|
$icon = '/t/usernot.gif';
|
|
}
|
|
|
|
$output = '<span class="'.$linktype.'">'.
|
|
'<a href="'.$script.'&'.$command.'='.$userid.
|
|
'&sesskey='.sesskey().'" title="'.s($string).'">'.
|
|
'<img src="'.$CFG->pixpath.$icon.'" class="iconsmall" alt="'.s($alttext).'" />'.
|
|
$text.'</a></span>';
|
|
|
|
if ($return) {
|
|
return $output;
|
|
} else {
|
|
echo $output;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
function message_history_link($userid1, $userid2=0, $returnstr=false, $keywords='', $position='', $linktext='') {
|
|
global $USER, $CFG;
|
|
|
|
static $strmessagehistory;
|
|
|
|
if (empty($strmessagehistory)) {
|
|
$strmessagehistory = get_string('messagehistory', 'message');
|
|
}
|
|
|
|
if (!$userid2) {
|
|
$userid2 = $USER->id;
|
|
}
|
|
if ($position) {
|
|
$position = "#$position";
|
|
}
|
|
if ($keywords) {
|
|
$keywords = "&search=".urlencode($keywords);
|
|
}
|
|
|
|
if ($linktext == 'icon') { // Icon only
|
|
$fulllink = '<img src="'.$CFG->pixpath.'/t/log.gif" class="iconsmall" alt="'.$strmessagehistory.'" />';
|
|
} else if ($linktext == 'both') { // Icon and standard name
|
|
$fulllink = '<img src="'.$CFG->pixpath.'/t/log.gif" class="iconsmall" alt="" />';
|
|
$fulllink .= ' '.$strmessagehistory;
|
|
} else if ($linktext) { // Custom name
|
|
$fulllink = $linktext;
|
|
} else { // Standard name only
|
|
$fulllink = $strmessagehistory;
|
|
}
|
|
|
|
$str = link_to_popup_window("/message/history.php?user1=$userid1&user2=$userid2$keywords$position",
|
|
"message_history_$userid1", $fulllink, 500, 500, $strmessagehistory,
|
|
'menubar=0,location=0,status,scrollbars,resizable,width=500,height=500', true);
|
|
|
|
$str = '<span class="history">'.$str.'</span>';
|
|
|
|
if ($returnstr) {
|
|
return $str;
|
|
} else {
|
|
echo $str;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Search through course users
|
|
*
|
|
* If $coursid specifies the site course then this function searches
|
|
* through all undeleted and confirmed users
|
|
*
|
|
* @uses $CFG
|
|
* @uses SITEID
|
|
* @param int $courseid The course in question.
|
|
* @param string $searchtext ?
|
|
* @param string $sort ?
|
|
* @param string $exceptions ?
|
|
* @return array An array of {@link $USER} records.
|
|
* @todo Finish documenting this function
|
|
*/
|
|
function message_search_users($courseid, $searchtext, $sort='', $exceptions='') {
|
|
global $CFG;
|
|
|
|
$fullname = sql_fullname();
|
|
$LIKE = sql_ilike();
|
|
|
|
if (!empty($exceptions)) {
|
|
$except = ' AND u.id NOT IN ('. $exceptions .') ';
|
|
} else {
|
|
$except = '';
|
|
}
|
|
|
|
if (!empty($sort)) {
|
|
$order = ' ORDER BY '. $sort;
|
|
} else {
|
|
$order = '';
|
|
}
|
|
|
|
$select = 'u.deleted = \'0\' AND u.confirmed = \'1\'';
|
|
$fields = 'u.id, u.firstname, u.lastname, u.picture';
|
|
|
|
if (!$courseid or $courseid == SITEID) {
|
|
return get_records_sql("SELECT $fields
|
|
FROM {$CFG->prefix}user u
|
|
WHERE $select
|
|
AND ($fullname $LIKE '%$searchtext%')
|
|
$except $order");
|
|
} else {
|
|
|
|
$context = get_context_instance(CONTEXT_COURSE, $courseid);
|
|
$contextlists = get_related_contexts_string($context);
|
|
|
|
// everyone who has a role assignement in this course or higher
|
|
$users = get_records_sql("SELECT $fields
|
|
FROM {$CFG->prefix}user u,
|
|
{$CFG->prefix}role_assignments ra
|
|
WHERE $select
|
|
AND ra.contextid $contextlists
|
|
AND u.id = ra.userid
|
|
AND ($fullname $LIKE '%$searchtext%')
|
|
$except $order");
|
|
|
|
return $users;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
function message_search($searchterms, $fromme=true, $tome=true, $courseid='none', $userid=0) {
|
|
/// Returns a list of posts found using an array of search terms
|
|
/// eg word +word -word
|
|
///
|
|
|
|
global $CFG, $USER;
|
|
|
|
/// If no userid sent then assume current user
|
|
if ($userid == 0) $userid = $USER->id;
|
|
|
|
/// Some differences in SQL syntax
|
|
$LIKE = sql_ilike();
|
|
$NOTLIKE = 'NOT ' . $LIKE;
|
|
if ($CFG->dbfamily == "postgres") {
|
|
$REGEXP = "~*";
|
|
$NOTREGEXP = "!~*";
|
|
} else {
|
|
$REGEXP = "REGEXP";
|
|
$NOTREGEXP = "NOT REGEXP";
|
|
}
|
|
|
|
$messagesearch = "";
|
|
|
|
foreach ($searchterms as $searchterm) {
|
|
if (strlen($searchterm) < 2) {
|
|
continue;
|
|
}
|
|
/// Under Oracle and MSSQL, trim the + and - operators and perform
|
|
/// simpler LIKE search
|
|
if ($CFG->dbfamily == 'oracle' || $CFG->dbfamily == 'mssql') {
|
|
$searchterm = trim($searchterm, '+-');
|
|
}
|
|
|
|
if ($messagesearch) {
|
|
$messagesearch .= " AND ";
|
|
}
|
|
|
|
if (substr($searchterm,0,1) == "+") {
|
|
$searchterm = substr($searchterm,1);
|
|
$messagesearch .= " m.message $REGEXP '(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)' ";
|
|
} else if (substr($searchterm,0,1) == "-") {
|
|
$searchterm = substr($searchterm,1);
|
|
$messagesearch .= " m.message $NOTREGEXP '(^|[^a-zA-Z0-9])$searchterm([^a-zA-Z0-9]|$)' ";
|
|
} else {
|
|
$messagesearch .= " m.message $LIKE '%$searchterm%' ";
|
|
}
|
|
}
|
|
|
|
if ($messagesearch == '') { // if only 1 letter words searched
|
|
return false;
|
|
}
|
|
|
|
$messagesearch = "($messagesearch) ";
|
|
|
|
|
|
/// There are several possibilities
|
|
/// 1. courseid = SITEID : The admin is searching messages by all users
|
|
/// 2. courseid = ?? : A teacher is searching messages by users in
|
|
/// one of their courses - currently disabled
|
|
/// 3. courseid = none : User is searching their own messages;
|
|
/// a. Messages from user
|
|
/// b. Messages to user
|
|
/// c. Messages to and from user
|
|
|
|
if ($courseid == SITEID) { /// admin is searching all messages
|
|
$m_read = get_records_sql("SELECT m.id, m.useridto, m.useridfrom, m.message, m.timecreated
|
|
FROM {$CFG->prefix}message_read m
|
|
WHERE $messagesearch");
|
|
$m_unread = get_records_sql("SELECT m.id, m.useridto, m.useridfrom, m.message, m.timecreated
|
|
FROM {$CFG->prefix}message m
|
|
WHERE $messagesearch");
|
|
|
|
if ($m_read === false) $m_read = array();
|
|
if ($m_unread === false) $m_unread = array();
|
|
|
|
} elseif ($courseid !== 'none') {
|
|
/// This has not been implemented due to security concerns
|
|
|
|
} else {
|
|
|
|
if ($fromme and $tome) $messagesearch .= "AND (m.useridfrom='$userid' OR m.useridto='$userid') ";
|
|
elseif ($fromme) $messagesearch .= "AND m.useridfrom='$userid' ";
|
|
elseif ($tome) $messagesearch .= "AND m.useridto='$userid' ";
|
|
|
|
$m_read = get_records_sql("SELECT m.id, m.useridto, m.useridfrom, m.message, m.timecreated
|
|
FROM {$CFG->prefix}message_read m
|
|
WHERE $messagesearch");
|
|
$m_unread = get_records_sql("SELECT m.id, m.useridto, m.useridfrom, m.message, m.timecreated
|
|
FROM {$CFG->prefix}message m
|
|
WHERE $messagesearch");
|
|
|
|
if ($m_read === false) $m_read = array();
|
|
if ($m_unread === false) $m_unread = array();
|
|
|
|
}
|
|
|
|
/// The keys may be duplicated in $m_read and $m_unread so we can't
|
|
/// do a simple concatenation
|
|
$message = array();
|
|
foreach ($m_read as $m) $messages[] = $m;
|
|
foreach ($m_unread as $m) $messages[] = $m;
|
|
|
|
|
|
return (empty($messages)) ? false : $messages;
|
|
}
|
|
|
|
|
|
|
|
/// Borrowed with changes from mod/forum/lib.php
|
|
function message_shorten_message($message, $minlength=0) {
|
|
// Given a post object that we already know has a long message
|
|
// this function truncates the message nicely to the first
|
|
// sane place between $CFG->forum_longpost and $CFG->forum_shortpost
|
|
|
|
$i = 0;
|
|
$tag = false;
|
|
$length = strlen($message);
|
|
$count = 0;
|
|
$stopzone = false;
|
|
$truncate = 0;
|
|
if ($minlength == 0) $minlength = MESSAGE_SHORTLENGTH;
|
|
|
|
|
|
for ($i=0; $i<$length; $i++) {
|
|
$char = $message[$i];
|
|
|
|
switch ($char) {
|
|
case "<":
|
|
$tag = true;
|
|
break;
|
|
case ">":
|
|
$tag = false;
|
|
break;
|
|
default:
|
|
if (!$tag) {
|
|
if ($stopzone) {
|
|
if ($char == '.' or $char == ' ') {
|
|
$truncate = $i+1;
|
|
break 2;
|
|
}
|
|
}
|
|
$count++;
|
|
}
|
|
break;
|
|
}
|
|
if (!$stopzone) {
|
|
if ($count > $minlength) {
|
|
$stopzone = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!$truncate) {
|
|
$truncate = $i;
|
|
}
|
|
|
|
return substr($message, 0, $truncate);
|
|
}
|
|
|
|
|
|
/*
|
|
* Given a string and an array of keywords, this function looks
|
|
* for the first keyword in the string, and then chops out a
|
|
* small section from the text that shows that word in context.
|
|
*/
|
|
function message_get_fragment($message, $keywords) {
|
|
|
|
$fullsize = 120;
|
|
$halfsize = (int)($fullsize/2);
|
|
|
|
$message = strip_tags($message);
|
|
|
|
foreach ($keywords as $keyword) { // Just get the first one
|
|
if ($keyword !== '') {
|
|
break;
|
|
}
|
|
}
|
|
if (empty($keyword)) { // None found, so just return start of message
|
|
return message_shorten_message($message, 30);
|
|
}
|
|
|
|
$leadin = $leadout = '';
|
|
|
|
/// Find the start of the fragment
|
|
$start = 0;
|
|
$length = strlen($message);
|
|
|
|
$pos = strpos($message, $keyword);
|
|
if ($pos > $halfsize) {
|
|
$start = $pos - $halfsize;
|
|
$leadin = '...';
|
|
}
|
|
/// Find the end of the fragment
|
|
$end = $start + $fullsize;
|
|
if ($end > $length) {
|
|
$end = $length;
|
|
} else {
|
|
$leadout = '...';
|
|
}
|
|
|
|
/// Pull out the fragment and format it
|
|
|
|
$fragment = substr($message, $start, $end - $start);
|
|
$fragment = $leadin.highlight(implode(' ',$keywords), $fragment).$leadout;
|
|
return $fragment;
|
|
}
|
|
|
|
|
|
function message_get_history($user1, $user2) {
|
|
$messages = get_records_select('message_read', "(useridto = '$user1->id' AND useridfrom = '$user2->id') OR
|
|
(useridto = '$user2->id' AND useridfrom = '$user1->id')",
|
|
'timecreated');
|
|
if ($messages_new = get_records_select('message', "(useridto = '$user1->id' AND useridfrom = '$user2->id') OR
|
|
(useridto = '$user2->id' AND useridfrom = '$user1->id')",
|
|
'timecreated')) {
|
|
foreach ($messages_new as $message) {
|
|
$messages[] = $message;
|
|
}
|
|
}
|
|
return $messages;
|
|
}
|
|
|
|
function message_format_message(&$message, &$user, $format='', $keywords='', $class='other') {
|
|
|
|
static $dateformat;
|
|
|
|
if (empty($dateformat)) {
|
|
if ($format) {
|
|
$dateformat = $format;
|
|
} else {
|
|
$format = get_string('strftimedaytime');
|
|
}
|
|
}
|
|
$time = userdate($message->timecreated, $dateformat);
|
|
$options->para = false;
|
|
$messagetext = format_text($message->message, $message->format, $options);
|
|
if ($keywords) {
|
|
$messagetext = highlight($keywords, $messagetext);
|
|
}
|
|
return '<div class="message '.$class.'"><a name="m'.$message->id.'"></a><span class="author">'.s(fullname($user)).'</span> <span class="time">['.$time.']</span>: <span class="content">'.$messagetext.'</span></div>';
|
|
}
|
|
|
|
/*
|
|
* Inserts a message into the database, but also forwards it
|
|
* via other means if appropriate.
|
|
*/
|
|
function message_post_message($userfrom, $userto, $message, $format, $messagetype) {
|
|
|
|
global $CFG, $SITE;
|
|
|
|
/// Save the new message in the database
|
|
|
|
$savemessage = NULL;
|
|
$savemessage->useridfrom = $userfrom->id;
|
|
$savemessage->useridto = $userto->id;
|
|
$savemessage->message = $message;
|
|
$savemessage->format = $format;
|
|
$savemessage->timecreated = time();
|
|
$savemessage->messagetype = 'direct';
|
|
|
|
if (!$savemessage->id = insert_record('message', $savemessage)) {
|
|
return false;
|
|
}
|
|
|
|
|
|
/// Check to see if anything else needs to be done with it
|
|
|
|
$preference = (object)get_user_preferences(NULL, NULL, $userto->id);
|
|
|
|
if (!isset($preference->message_emailmessages) or $preference->message_emailmessages) { // Receiver wants mail forwarding
|
|
if (!isset($preference->message_emailtimenosee)) {
|
|
$preference->message_emailtimenosee = 10;
|
|
}
|
|
if (!isset($preference->message_emailformat)) {
|
|
$preference->message_emailformat = FORMAT_HTML;
|
|
}
|
|
if ((time() - $userto->lastaccess) > ((int)$preference->message_emailtimenosee * 60)) { // Long enough
|
|
|
|
$message = stripslashes_safe($message);
|
|
$tagline = get_string('emailtagline', 'message', $SITE->shortname);
|
|
|
|
$messagesubject = message_shorten_message(strip_tags($message), 30).'...';
|
|
|
|
$messagetext = format_text_email($message, $format).
|
|
"\n\n--\n".$tagline."\n"."$CFG->wwwroot/message/index.php?popup=1";
|
|
|
|
if (isset($preference->message_emailformat) and $preference->message_emailformat == FORMAT_HTML) {
|
|
$messagehtml = format_text($message, $format);
|
|
$messagehtml .= '<hr /><p><a href="'.$CFG->wwwroot.'/message/index.php?popup=1">'.$tagline.'</a></p>';
|
|
} else {
|
|
$messagehtml = NULL;
|
|
}
|
|
|
|
if (!empty($preference->message_emailaddress)) {
|
|
$userto->email = $preference->message_emailaddress; // Use custom messaging address
|
|
}
|
|
email_to_user($userto, $userfrom, $messagesubject, $messagetext, $messagehtml);
|
|
}
|
|
}
|
|
|
|
return $savemessage->id;
|
|
}
|
|
|
|
|
|
/*
|
|
* Returns a list of all user ids who have used messaging in the site
|
|
* This was the simple way to code the SQL ... is it going to blow up
|
|
* on large datasets?
|
|
*/
|
|
function message_get_participants() {
|
|
|
|
global $CFG;
|
|
|
|
return get_records_sql("SELECT useridfrom as id,1 FROM {$CFG->prefix}message
|
|
UNION SELECT useridto as id,1 FROM {$CFG->prefix}message
|
|
UNION SELECT useridfrom as id,1 FROM {$CFG->prefix}message_read
|
|
UNION SELECT useridto as id,1 FROM {$CFG->prefix}message_read
|
|
UNION SELECT userid as id,1 FROM {$CFG->prefix}message_contacts
|
|
UNION SELECT contactid as id,1 from {$CFG->prefix}message_contacts");
|
|
}
|
|
|
|
?>
|