Esempio n. 1
0
 /**
  * Mark as read: boards, topics, unread replies.
  * Accessed by action=markasread
  * Subactions: sa=topic, sa=all, sa=unreadreplies
  */
 public function action_markasread()
 {
     global $board, $board_info;
     checkSession('get');
     require_once SUBSDIR . '/Boards.subs.php';
     $categories = array();
     $boards = array();
     if (isset($_REQUEST['c'])) {
         $_REQUEST['c'] = explode(',', $_REQUEST['c']);
         foreach ($_REQUEST['c'] as $c) {
             $categories[] = (int) $c;
         }
     }
     if (isset($_REQUEST['boards'])) {
         $_REQUEST['boards'] = explode(',', $_REQUEST['boards']);
         foreach ($_REQUEST['boards'] as $b) {
             $boards[] = (int) $b;
         }
     }
     if (!empty($board)) {
         $boards[] = (int) $board;
     }
     if (isset($_REQUEST['children']) && !empty($boards)) {
         // Mark all children of the boards we got (selected by the user).
         addChildBoards($boards);
     }
     $boards = array_keys(boardsPosts($boards, $categories));
     if (empty($boards)) {
         return '';
     }
     // Mark boards as read.
     markBoardsRead($boards, isset($_REQUEST['unread']), true);
     foreach ($boards as $b) {
         if (isset($_SESSION['topicseen_cache'][$b])) {
             $_SESSION['topicseen_cache'][$b] = array();
         }
     }
     $this->_querystring_board_limits = $_REQUEST['sa'] == 'board' ? ';boards=' . implode(',', $boards) . ';start=%d' : '';
     $sort_methods = array('subject', 'starter', 'replies', 'views', 'first_post', 'last_post');
     // The default is the most logical: newest first.
     if (!isset($_REQUEST['sort']) || !in_array($_REQUEST['sort'], $sort_methods)) {
         $this->_querystring_sort_limits = isset($_REQUEST['asc']) ? ';asc' : '';
     } else {
         $this->_querystring_sort_limits = ';sort=' . $_REQUEST['sort'] . (isset($_REQUEST['desc']) ? ';desc' : '');
     }
     if (!isset($_REQUEST['unread'])) {
         // Find all boards with the parents in the board list
         $boards_to_add = accessibleBoards(null, $boards);
         if (!empty($boards_to_add)) {
             markBoardsRead($boards_to_add);
         }
         if (empty($board)) {
             return '';
         } else {
             return 'board=' . $board . '.0';
         }
     } else {
         if (empty($board_info['parent'])) {
             return '';
         } else {
             return 'board=' . $board_info['parent'] . '.0';
         }
     }
 }
Esempio n. 2
0
 /**
  * Callback used to prepare the mention message for mentions, likes, removed likes and buddies
  *
  * @param mixed[] $mentions : Mentions retrieved from the database by getUserMentions
  * @param string $type : the type of the mention
  */
 public function prepareMentionMessage(&$mentions, $type)
 {
     global $txt, $scripturl, $context, $modSettings, $user_info;
     $boards = array();
     $removed = false;
     foreach ($mentions as $key => $row) {
         // To ensure it is not done twice
         if ($row['mention_type'] != $type) {
             continue;
         }
         // These things are associated to messages and require permission checks
         if (in_array($row['mention_type'], array('men', 'like', 'rlike'))) {
             $boards[$key] = $row['id_board'];
         }
         $mentions[$key]['message'] = str_replace(array('{msg_link}', '{msg_url}', '{subject}'), array('<a href="' . $scripturl . '?topic=' . $row['id_topic'] . '.msg' . $row['id_msg'] . ';mentionread;mark=read;' . $context['session_var'] . '=' . $context['session_id'] . ';item=' . $row['id_mention'] . '#msg' . $row['id_msg'] . '">' . $row['subject'] . '</a>', $scripturl . '?topic=' . $row['id_topic'] . '.msg' . $row['id_msg'] . ';mentionread;' . $context['session_var'] . '=' . $context['session_id'] . 'item=' . $row['id_mention'] . '#msg' . $row['id_msg'], $row['subject']), $txt['mention_' . $row['mention_type']]);
     }
     // Do the permissions checks and replace inappropriate messages
     if (!empty($boards)) {
         require_once SUBSDIR . '/Boards.subs.php';
         $accessibleBoards = accessibleBoards($boards);
         foreach ($boards as $key => $board) {
             // You can't see the board where this mention is, so we drop it from the results
             if (!in_array($board, $accessibleBoards)) {
                 $removed = true;
                 unset($mentions[$key]);
             }
         }
     }
     // If some of these mentions are no longer visable, we need to do some maintenance
     if ($removed) {
         if (!empty($modSettings['user_access_mentions'])) {
             $modSettings['user_access_mentions'] = @unserialize($modSettings['user_access_mentions']);
         } else {
             $modSettings['user_access_mentions'] = array();
         }
         $modSettings['user_access_mentions'][$user_info['id']] = 0;
         updateSettings(array('user_access_mentions' => serialize($modSettings['user_access_mentions'])));
         scheduleTaskImmediate('user_access_mentions');
     }
     return $removed;
 }
Esempio n. 3
0
    /**
     * Find unread topics and replies.
     * Accessed by action=unread and action=unreadreplies
     */
    public function action_unread()
    {
        global $board, $txt, $scripturl;
        global $user_info, $context, $settings, $modSettings, $options;
        $db = database();
        // Guests can't have unread things, we don't know anything about them.
        is_not_guest();
        // Prefetching + lots of MySQL work = bad mojo.
        if (isset($_SERVER['HTTP_X_MOZ']) && $_SERVER['HTTP_X_MOZ'] == 'prefetch') {
            @ob_end_clean();
            header('HTTP/1.1 403 Forbidden');
            die;
        }
        // We need... we need... I know!
        require_once SUBSDIR . '/Recent.subs.php';
        require_once SUBSDIR . '/Boards.subs.php';
        $context['showCheckboxes'] = !empty($options['display_quick_mod']) && $options['display_quick_mod'] == 1 && $settings['show_mark_read'];
        $context['showing_all_topics'] = isset($_GET['all']);
        $context['start'] = (int) $_REQUEST['start'];
        $context['topics_per_page'] = empty($modSettings['disableCustomPerPage']) && !empty($options['topics_per_page']) ? $options['topics_per_page'] : $modSettings['defaultMaxTopics'];
        if ($_REQUEST['action'] == 'unread') {
            $context['page_title'] = $context['showing_all_topics'] ? $txt['unread_topics_all'] : $txt['unread_topics_visit'];
        } else {
            $context['page_title'] = $txt['unread_replies'];
        }
        if ($context['showing_all_topics'] && !empty($modSettings['loadavg_allunread']) && $modSettings['current_load'] >= $modSettings['loadavg_allunread']) {
            fatal_lang_error('loadavg_allunread_disabled', false);
        } elseif ($_REQUEST['action'] != 'unread' && !empty($modSettings['loadavg_unreadreplies']) && $modSettings['current_load'] >= $modSettings['loadavg_unreadreplies']) {
            fatal_lang_error('loadavg_unreadreplies_disabled', false);
        } elseif (!$context['showing_all_topics'] && $_REQUEST['action'] == 'unread' && !empty($modSettings['loadavg_unread']) && $modSettings['current_load'] >= $modSettings['loadavg_unread']) {
            fatal_lang_error('loadavg_unread_disabled', false);
        }
        // Parameters for the main query.
        $query_parameters = array();
        // Are we specifying any specific board?
        if (isset($_REQUEST['children']) && (!empty($board) || !empty($_REQUEST['boards']))) {
            $boards = array();
            if (!empty($_REQUEST['boards'])) {
                $_REQUEST['boards'] = explode(',', $_REQUEST['boards']);
                foreach ($_REQUEST['boards'] as $b) {
                    $boards[] = (int) $b;
                }
            }
            if (!empty($board)) {
                $boards[] = (int) $board;
            }
            // The easiest thing is to just get all the boards they can see,
            // but since we've specified the top of tree we ignore some of them
            addChildBoards($boards);
            if (empty($boards)) {
                fatal_lang_error('error_no_boards_selected');
            }
            $query_this_board = 'id_board IN ({array_int:boards})';
            $query_parameters['boards'] = $boards;
            $context['querystring_board_limits'] = ';boards=' . implode(',', $boards) . ';start=%d';
        } elseif (!empty($board)) {
            $query_this_board = 'id_board = {int:board}';
            $query_parameters['board'] = $board;
            $context['querystring_board_limits'] = ';board=' . $board . '.%1$d';
        } elseif (!empty($_REQUEST['boards'])) {
            $selected_boards = array_map('intval', explode(',', $_REQUEST['boards']));
            $boards = accessibleBoards($selected_boards);
            if (empty($boards)) {
                fatal_lang_error('error_no_boards_selected');
            }
            $query_this_board = 'id_board IN ({array_int:boards})';
            $query_parameters['boards'] = $boards;
            $context['querystring_board_limits'] = ';boards=' . implode(',', $boards) . ';start=%1$d';
        } elseif (!empty($_REQUEST['c'])) {
            $categories = array_map('intval', explode(',', $_REQUEST['c']));
            $boards = array_keys(boardsPosts(array(), $categories, isset($_REQUEST['action']) && $_REQUEST['action'] != 'unreadreplies'));
            if (empty($boards)) {
                fatal_lang_error('error_no_boards_selected');
            }
            $query_this_board = 'id_board IN ({array_int:boards})';
            $query_parameters['boards'] = $boards;
            $context['querystring_board_limits'] = ';c=' . $_REQUEST['c'] . ';start=%1$d';
        } else {
            $see_board = isset($_REQUEST['action']) && $_REQUEST['action'] == 'unreadreplies' ? 'query_see_board' : 'query_wanna_see_board';
            // Don't bother to show deleted posts!
            $boards = wantedBoards($see_board);
            if (empty($boards)) {
                fatal_lang_error('error_no_boards_selected');
            }
            $query_this_board = 'id_board IN ({array_int:boards})';
            $query_parameters['boards'] = $boards;
            $context['querystring_board_limits'] = ';start=%1$d';
            $context['no_board_limits'] = true;
        }
        $sort_methods = array('subject' => 'ms.subject', 'starter' => 'IFNULL(mems.real_name, ms.poster_name)', 'replies' => 't.num_replies', 'views' => 't.num_views', 'first_post' => 't.id_topic', 'last_post' => 't.id_last_msg');
        // The default is the most logical: newest first.
        if (!isset($_REQUEST['sort']) || !isset($sort_methods[$_REQUEST['sort']])) {
            $context['sort_by'] = 'last_post';
            $ascending = isset($_REQUEST['asc']);
            $context['querystring_sort_limits'] = $ascending ? ';asc' : '';
        } else {
            $context['sort_by'] = $_REQUEST['sort'];
            $ascending = !isset($_REQUEST['desc']);
            $context['querystring_sort_limits'] = ';sort=' . $context['sort_by'] . ($ascending ? '' : ';desc');
        }
        $_REQUEST['sort'] = $sort_methods[$context['sort_by']];
        $context['sort_direction'] = $ascending ? 'up' : 'down';
        $context['sort_title'] = $ascending ? $txt['sort_desc'] : $txt['sort_asc'];
        // Trick
        $txt['starter'] = $txt['started_by'];
        foreach ($sort_methods as $key => $val) {
            $context['topics_headers'][$key] = array('url' => $scripturl . '?action=unread' . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start']) . ';sort=subject' . ($context['sort_by'] == 'subject' && $context['sort_direction'] == 'up' ? ';desc' : ''), 'sort_dir_img' => $context['sort_by'] == $key ? '<img class="sort" src="' . $settings['images_url'] . '/sort_' . $context['sort_direction'] . '.png" alt="" title="' . $context['sort_title'] . '" />' : '');
        }
        if (!empty($_REQUEST['c']) && is_array($_REQUEST['c']) && count($_REQUEST['c']) == 1) {
            $name = categoryName((int) $_REQUEST['c'][0]);
            $context['linktree'][] = array('url' => $scripturl . '#c' . (int) $_REQUEST['c'][0], 'name' => $name);
        }
        $context['linktree'][] = array('url' => $scripturl . '?action=' . $_REQUEST['action'] . sprintf($context['querystring_board_limits'], 0) . $context['querystring_sort_limits'], 'name' => $_REQUEST['action'] == 'unread' ? $txt['unread_topics_visit'] : $txt['unread_replies']);
        if ($context['showing_all_topics']) {
            $context['linktree'][] = array('url' => $scripturl . '?action=' . $_REQUEST['action'] . ';all' . sprintf($context['querystring_board_limits'], 0) . $context['querystring_sort_limits'], 'name' => $txt['unread_topics_all']);
            $txt['unread_topics_visit_none'] = str_replace('{unread_all_url}', $scripturl . '?action=unread;all', $txt['unread_topics_visit_none']);
        } else {
            $txt['unread_topics_visit_none'] = str_replace('{unread_all_url}', $scripturl . '?action=unread;all' . sprintf($context['querystring_board_limits'], 0) . $context['querystring_sort_limits'], $txt['unread_topics_visit_none']);
        }
        loadTemplate('Recent');
        $context['sub_template'] = $_REQUEST['action'] == 'unread' ? 'unread' : 'replies';
        // Setup the default topic icons... for checking they exist and the like ;)
        require_once SUBSDIR . '/MessageIndex.subs.php';
        $context['icon_sources'] = MessageTopicIcons();
        $is_topics = $_REQUEST['action'] == 'unread';
        // If empty, no preview at all
        if (empty($modSettings['message_index_preview'])) {
            $preview_bodies = '';
        } elseif (empty($modSettings['preview_characters'])) {
            $preview_bodies = 'ml.body AS last_body, ms.body AS first_body,';
        } else {
            $preview_bodies = 'SUBSTRING(ml.body, 1, ' . ($modSettings['preview_characters'] + 256) . ') AS last_body, SUBSTRING(ms.body, 1, ' . ($modSettings['preview_characters'] + 256) . ') AS first_body,';
        }
        // This part is the same for each query.
        $select_clause = '
					ms.subject AS first_subject, ms.poster_time AS first_poster_time, ms.id_topic, t.id_board, b.name AS bname,
					t.num_replies, t.num_views, t.num_likes, ms.id_member AS id_first_member, ml.id_member AS id_last_member,
					ml.poster_time AS last_poster_time, IFNULL(mems.real_name, ms.poster_name) AS first_poster_name,
					IFNULL(meml.real_name, ml.poster_name) AS last_poster_name, ml.subject AS last_subject,
					ml.icon AS last_icon, ms.icon AS first_icon, t.id_poll, t.is_sticky, t.locked, ml.modified_time AS last_modified_time,
					IFNULL(lt.id_msg, IFNULL(lmr.id_msg, -1)) + 1 AS new_from,
					' . $preview_bodies . '
					ml.smileys_enabled AS last_smileys, ms.smileys_enabled AS first_smileys, t.id_first_msg, t.id_last_msg';
        if ($context['showing_all_topics']) {
            $earliest_msg = earliest_msg();
        }
        // @todo Add modified_time in for log_time check?
        if ($modSettings['totalMessages'] > 100000 && $context['showing_all_topics']) {
            $db->query('', '
				DROP TABLE IF EXISTS {db_prefix}log_topics_unread', array());
            // Let's copy things out of the log_topics table, to reduce searching.
            $have_temp_table = $db->query('', '
				CREATE TEMPORARY TABLE {db_prefix}log_topics_unread (
					PRIMARY KEY (id_topic)
				)
				SELECT lt.id_topic, lt.id_msg, lt.unwatched
				FROM {db_prefix}topics AS t
					INNER JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic)
				WHERE lt.id_member = {int:current_member}
					AND t.' . $query_this_board . (empty($earliest_msg) ? '' : '
					AND t.id_last_msg > {int:earliest_msg}') . ($modSettings['postmod_active'] ? '
					AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? '
					AND lt.unwatched != 1' : ''), array_merge($query_parameters, array('current_member' => $user_info['id'], 'earliest_msg' => !empty($earliest_msg) ? $earliest_msg : 0, 'is_approved' => 1, 'db_error_skip' => true))) !== false;
        } else {
            $have_temp_table = false;
        }
        if ($context['showing_all_topics'] && $have_temp_table) {
            $request = $db->query('', '
				SELECT COUNT(*), MIN(t.id_last_msg)
				FROM {db_prefix}topics AS t
					LEFT JOIN {db_prefix}log_topics_unread AS lt ON (lt.id_topic = t.id_topic)
					LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
				WHERE t.' . $query_this_board . (!empty($earliest_msg) ? '
					AND t.id_last_msg > {int:earliest_msg}' : '') . '
					AND IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0)) < t.id_last_msg' . ($modSettings['postmod_active'] ? ' AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? ' AND IFNULL(lt.unwatched, 0) != 1' : ''), array_merge($query_parameters, array('current_member' => $user_info['id'], 'earliest_msg' => !empty($earliest_msg) ? $earliest_msg : 0, 'is_approved' => 1)));
            list($num_topics, $min_message) = $db->fetch_row($request);
            $db->free_result($request);
            // Make sure the starting place makes sense and construct the page index.
            $context['page_index'] = constructPageIndex($scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . $context['querystring_board_limits'] . $context['querystring_sort_limits'], $_REQUEST['start'], $num_topics, $context['topics_per_page'], true);
            $context['current_page'] = (int) $_REQUEST['start'] / $context['topics_per_page'];
            $context['links'] += array('prev' => $_REQUEST['start'] >= $context['topics_per_page'] ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] - $context['topics_per_page']) . $context['querystring_sort_limits'] : '', 'next' => $_REQUEST['start'] + $context['topics_per_page'] < $num_topics ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] + $context['topics_per_page']) . $context['querystring_sort_limits'] : '');
            $context['page_info'] = array('current_page' => $_REQUEST['start'] / $context['topics_per_page'] + 1, 'num_pages' => floor(($num_topics - 1) / $context['topics_per_page']) + 1);
            if ($num_topics == 0) {
                // Mark the boards as read if there are no unread topics!
                // @todo look at this... there are no more unread topics already.
                // If clearing of log_topics is still needed, perhaps do it separately.
                markBoardsRead(empty($boards) ? $board : $boards, false, true);
                $context['topics'] = array();
                if ($context['querystring_board_limits'] == ';start=%1$d') {
                    $context['querystring_board_limits'] = '';
                } else {
                    $context['querystring_board_limits'] = sprintf($context['querystring_board_limits'], $_REQUEST['start']);
                }
                return;
            } else {
                $min_message = (int) $min_message;
            }
            $request = $db->query('substring', '
				SELECT ' . $select_clause . '
				FROM {db_prefix}messages AS ms
					INNER JOIN {db_prefix}topics AS t ON (t.id_topic = ms.id_topic AND t.id_first_msg = ms.id_msg)
					INNER JOIN {db_prefix}messages AS ml ON (ml.id_msg = t.id_last_msg)
					LEFT JOIN {db_prefix}boards AS b ON (b.id_board = ms.id_board)
					LEFT JOIN {db_prefix}members AS mems ON (mems.id_member = ms.id_member)
					LEFT JOIN {db_prefix}members AS meml ON (meml.id_member = ml.id_member)
					LEFT JOIN {db_prefix}log_topics_unread AS lt ON (lt.id_topic = t.id_topic)
					LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
				WHERE b.' . $query_this_board . '
					AND t.id_last_msg >= {int:min_message}
					AND IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0)) < t.id_last_msg' . ($modSettings['postmod_active'] ? ' AND ms.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? ' AND IFNULL(lt.unwatched, 0) != 1' : '') . '
				ORDER BY {raw:sort}
				LIMIT {int:offset}, {int:limit}', array_merge($query_parameters, array('current_member' => $user_info['id'], 'min_message' => $min_message, 'is_approved' => 1, 'sort' => $_REQUEST['sort'] . ($ascending ? '' : ' DESC'), 'offset' => $_REQUEST['start'], 'limit' => $context['topics_per_page'])));
        } elseif ($is_topics) {
            $request = $db->query('', '
				SELECT COUNT(*), MIN(t.id_last_msg)
				FROM {db_prefix}topics AS t' . (!empty($have_temp_table) ? '
					LEFT JOIN {db_prefix}log_topics_unread AS lt ON (lt.id_topic = t.id_topic)' : '
					LEFT JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic AND lt.id_member = {int:current_member})') . '
					LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
				WHERE t.' . $query_this_board . ($context['showing_all_topics'] && !empty($earliest_msg) ? '
					AND t.id_last_msg > {int:earliest_msg}' : (!$context['showing_all_topics'] && empty($_SESSION['first_login']) ? '
					AND t.id_last_msg > {int:id_msg_last_visit}' : '')) . '
					AND IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0)) < t.id_last_msg' . ($modSettings['postmod_active'] ? ' AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? ' AND IFNULL(lt.unwatched, 0) != 1' : ''), array_merge($query_parameters, array('current_member' => $user_info['id'], 'earliest_msg' => !empty($earliest_msg) ? $earliest_msg : 0, 'id_msg_last_visit' => $_SESSION['id_msg_last_visit'], 'is_approved' => 1)));
            list($num_topics, $min_message) = $db->fetch_row($request);
            $db->free_result($request);
            // Make sure the starting place makes sense and construct the page index.
            $context['page_index'] = constructPageIndex($scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . $context['querystring_board_limits'] . $context['querystring_sort_limits'], $_REQUEST['start'], $num_topics, $context['topics_per_page'], true);
            $context['current_page'] = (int) $_REQUEST['start'] / $context['topics_per_page'];
            $context['links'] += array('prev' => $_REQUEST['start'] >= $context['topics_per_page'] ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] - $context['topics_per_page']) . $context['querystring_sort_limits'] : '', 'next' => $_REQUEST['start'] + $context['topics_per_page'] < $num_topics ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] + $context['topics_per_page']) . $context['querystring_sort_limits'] : '');
            $context['page_info'] = array('current_page' => $_REQUEST['start'] / $context['topics_per_page'] + 1, 'num_pages' => floor(($num_topics - 1) / $context['topics_per_page']) + 1);
            if ($num_topics == 0) {
                // Is this an all topics query?
                if ($context['showing_all_topics']) {
                    // Since there are no unread topics, mark the boards as read!
                    // @todo look at this... there are no more unread topics already.
                    // If clearing of log_topics is still needed, perhaps do it separately.
                    markBoardsRead(empty($boards) ? $board : $boards, false, true);
                }
                $context['topics'] = array();
                if ($context['querystring_board_limits'] == ';start=%d') {
                    $context['querystring_board_limits'] = '';
                } else {
                    $context['querystring_board_limits'] = sprintf($context['querystring_board_limits'], $_REQUEST['start']);
                }
                return;
            } else {
                $min_message = (int) $min_message;
            }
            $request = $db->query('substring', '
				SELECT ' . $select_clause . '
				FROM {db_prefix}messages AS ms
					INNER JOIN {db_prefix}topics AS t ON (t.id_topic = ms.id_topic AND t.id_first_msg = ms.id_msg)
					INNER JOIN {db_prefix}messages AS ml ON (ml.id_msg = t.id_last_msg)
					LEFT JOIN {db_prefix}boards AS b ON (b.id_board = t.id_board)
					LEFT JOIN {db_prefix}members AS mems ON (mems.id_member = ms.id_member)
					LEFT JOIN {db_prefix}members AS meml ON (meml.id_member = ml.id_member)' . (!empty($have_temp_table) ? '
					LEFT JOIN {db_prefix}log_topics_unread AS lt ON (lt.id_topic = t.id_topic)' : '
					LEFT JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic AND lt.id_member = {int:current_member})') . '
					LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
				WHERE t.' . $query_this_board . '
					AND t.id_last_msg >= {int:min_message}
					AND IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0)) < ml.id_msg' . ($modSettings['postmod_active'] ? ' AND ms.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? ' AND IFNULL(lt.unwatched, 0) != 1' : '') . '
				ORDER BY {raw:order}
				LIMIT {int:offset}, {int:limit}', array_merge($query_parameters, array('current_member' => $user_info['id'], 'min_message' => $min_message, 'is_approved' => 1, 'order' => $_REQUEST['sort'] . ($ascending ? '' : ' DESC'), 'offset' => $_REQUEST['start'], 'limit' => $context['topics_per_page'])));
        } else {
            if ($modSettings['totalMessages'] > 100000) {
                $db->query('', '
					DROP TABLE IF EXISTS {db_prefix}topics_posted_in', array());
                $db->query('', '
					DROP TABLE IF EXISTS {db_prefix}log_topics_posted_in', array());
                $sortKey_joins = array('ms.subject' => '
						INNER JOIN {db_prefix}messages AS ms ON (ms.id_msg = t.id_first_msg)', 'IFNULL(mems.real_name, ms.poster_name)' => '
						INNER JOIN {db_prefix}messages AS ms ON (ms.id_msg = t.id_first_msg)
						LEFT JOIN {db_prefix}members AS mems ON (mems.id_member = ms.id_member)');
                // The main benefit of this temporary table is not that it's faster; it's that it avoids locks later.
                $have_temp_table = $db->query('', '
					CREATE TEMPORARY TABLE {db_prefix}topics_posted_in (
						id_topic mediumint(8) unsigned NOT NULL default {string:string_zero},
						id_board smallint(5) unsigned NOT NULL default {string:string_zero},
						id_last_msg int(10) unsigned NOT NULL default {string:string_zero},
						id_msg int(10) unsigned NOT NULL default {string:string_zero},
						PRIMARY KEY (id_topic)
					)
					SELECT t.id_topic, t.id_board, t.id_last_msg, IFNULL(lmr.id_msg, 0) AS id_msg' . (!in_array($_REQUEST['sort'], array('t.id_last_msg', 't.id_topic')) ? ', ' . $_REQUEST['sort'] . ' AS sort_key' : '') . '
					FROM {db_prefix}messages AS m
						INNER JOIN {db_prefix}topics AS t ON (t.id_topic = m.id_topic)' . ($modSettings['enable_unwatch'] ? '
						LEFT JOIN {db_prefix}log_topics AS lt ON (t.id_topic = lt.id_topic AND lt.id_member = {int:current_member})' : '') . '
						LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})' . (isset($sortKey_joins[$_REQUEST['sort']]) ? $sortKey_joins[$_REQUEST['sort']] : '') . '
					WHERE m.id_member = {int:current_member}' . (!empty($board) ? '
						AND t.id_board = {int:current_board}' : '') . ($modSettings['postmod_active'] ? '
						AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? '
						AND IFNULL(lt.unwatched, 0) != 1' : '') . '
					GROUP BY m.id_topic', array('current_board' => $board, 'current_member' => $user_info['id'], 'is_approved' => 1, 'string_zero' => '0', 'db_error_skip' => true)) !== false;
                // If that worked, create a sample of the log_topics table too.
                if ($have_temp_table) {
                    $have_temp_table = $db->query('', '
						CREATE TEMPORARY TABLE {db_prefix}log_topics_posted_in (
							PRIMARY KEY (id_topic)
						)
						SELECT lt.id_topic, lt.id_msg
						FROM {db_prefix}log_topics AS lt
							INNER JOIN {db_prefix}topics_posted_in AS pi ON (pi.id_topic = lt.id_topic)
						WHERE lt.id_member = {int:current_member}', array('current_member' => $user_info['id'], 'db_error_skip' => true)) !== false;
                }
            }
            if (!empty($have_temp_table)) {
                $request = $db->query('', '
					SELECT COUNT(*)
					FROM {db_prefix}topics_posted_in AS pi
						LEFT JOIN {db_prefix}log_topics_posted_in AS lt ON (lt.id_topic = pi.id_topic)
					WHERE pi.' . $query_this_board . '
						AND IFNULL(lt.id_msg, pi.id_msg) < pi.id_last_msg', array_merge($query_parameters, array()));
                list($num_topics) = $db->fetch_row($request);
                $db->free_result($request);
                $min_message = 0;
            } else {
                $request = $db->query('unread_fetch_topic_count', '
					SELECT COUNT(DISTINCT t.id_topic), MIN(t.id_last_msg)
					FROM {db_prefix}topics AS t
						INNER JOIN {db_prefix}messages AS m ON (m.id_topic = t.id_topic)
						LEFT JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic AND lt.id_member = {int:current_member})
						LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
					WHERE t.' . $query_this_board . '
						AND m.id_member = {int:current_member}
						AND IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0)) < t.id_last_msg' . ($modSettings['postmod_active'] ? '
						AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? '
						AND IFNULL(lt.unwatched, 0) != 1' : ''), array_merge($query_parameters, array('current_member' => $user_info['id'], 'is_approved' => 1)));
                list($num_topics, $min_message) = $db->fetch_row($request);
                $db->free_result($request);
            }
            // Make sure the starting place makes sense and construct the page index.
            $context['page_index'] = constructPageIndex($scripturl . '?action=' . $_REQUEST['action'] . $context['querystring_board_limits'] . $context['querystring_sort_limits'], $_REQUEST['start'], $num_topics, $context['topics_per_page'], true);
            $context['current_page'] = (int) $_REQUEST['start'] / $context['topics_per_page'];
            $context['links'] += array('first' => $_REQUEST['start'] >= $context['topics_per_page'] ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], 0) . $context['querystring_sort_limits'] : '', 'prev' => $_REQUEST['start'] >= $context['topics_per_page'] ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] - $context['topics_per_page']) . $context['querystring_sort_limits'] : '', 'next' => $_REQUEST['start'] + $context['topics_per_page'] < $num_topics ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], $_REQUEST['start'] + $context['topics_per_page']) . $context['querystring_sort_limits'] : '', 'last' => $_REQUEST['start'] + $context['topics_per_page'] < $num_topics ? $scripturl . '?action=' . $_REQUEST['action'] . ($context['showing_all_topics'] ? ';all' : '') . sprintf($context['querystring_board_limits'], floor(($num_topics - 1) / $context['topics_per_page']) * $context['topics_per_page']) . $context['querystring_sort_limits'] : '', 'up' => $scripturl);
            $context['page_info'] = array('current_page' => $_REQUEST['start'] / $context['topics_per_page'] + 1, 'num_pages' => floor(($num_topics - 1) / $context['topics_per_page']) + 1);
            if ($num_topics == 0) {
                $context['topics'] = array();
                if ($context['querystring_board_limits'] == ';start=%d') {
                    $context['querystring_board_limits'] = '';
                } else {
                    $context['querystring_board_limits'] = sprintf($context['querystring_board_limits'], $_REQUEST['start']);
                }
                return;
            }
            if (!empty($have_temp_table)) {
                $request = $db->query('', '
					SELECT t.id_topic
					FROM {db_prefix}topics_posted_in AS t
						LEFT JOIN {db_prefix}log_topics_posted_in AS lt ON (lt.id_topic = t.id_topic)
					WHERE t.' . $query_this_board . '
						AND IFNULL(lt.id_msg, t.id_msg) < t.id_last_msg
					ORDER BY {raw:order}
					LIMIT {int:offset}, {int:limit}', array_merge($query_parameters, array('order' => (in_array($_REQUEST['sort'], array('t.id_last_msg', 't.id_topic')) ? $_REQUEST['sort'] : 't.sort_key') . ($ascending ? '' : ' DESC'), 'offset' => $_REQUEST['start'], 'limit' => $context['topics_per_page'])));
            } else {
                $request = $db->query('unread_replies', '
					SELECT DISTINCT t.id_topic
					FROM {db_prefix}topics AS t
						INNER JOIN {db_prefix}messages AS m ON (m.id_topic = t.id_topic AND m.id_member = {int:current_member})' . (strpos($_REQUEST['sort'], 'ms.') === false ? '' : '
						INNER JOIN {db_prefix}messages AS ms ON (ms.id_msg = t.id_first_msg)') . (strpos($_REQUEST['sort'], 'mems.') === false ? '' : '
						LEFT JOIN {db_prefix}members AS mems ON (mems.id_member = ms.id_member)') . '
						LEFT JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic AND lt.id_member = {int:current_member})
						LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
					WHERE t.' . $query_this_board . '
						AND t.id_last_msg >= {int:min_message}
						AND (IFNULL(lt.id_msg, IFNULL(lmr.id_msg, 0))) < t.id_last_msg' . ($modSettings['postmod_active'] ? ' AND t.approved = {int:is_approved}' : '') . ($modSettings['enable_unwatch'] ? ' AND IFNULL(lt.unwatched, 0) != 1' : '') . '
					ORDER BY {raw:order}
					LIMIT {int:offset}, {int:limit}', array_merge($query_parameters, array('current_member' => $user_info['id'], 'min_message' => (int) $min_message, 'is_approved' => 1, 'order' => $_REQUEST['sort'] . ($ascending ? '' : ' DESC'), 'offset' => $_REQUEST['start'], 'limit' => $context['topics_per_page'], 'sort' => $_REQUEST['sort'])));
            }
            $topics = array();
            while ($row = $db->fetch_assoc($request)) {
                $topics[] = $row['id_topic'];
            }
            $db->free_result($request);
            // Sanity... where have you gone?
            if (empty($topics)) {
                $context['topics'] = array();
                if ($context['querystring_board_limits'] == ';start=%d') {
                    $context['querystring_board_limits'] = '';
                } else {
                    $context['querystring_board_limits'] = sprintf($context['querystring_board_limits'], $_REQUEST['start']);
                }
                return;
            }
            $request = $db->query('substring', '
				SELECT ' . $select_clause . '
				FROM {db_prefix}topics AS t
					INNER JOIN {db_prefix}messages AS ms ON (ms.id_topic = t.id_topic AND ms.id_msg = t.id_first_msg)
					INNER JOIN {db_prefix}messages AS ml ON (ml.id_msg = t.id_last_msg)
					INNER JOIN {db_prefix}boards AS b ON (b.id_board = t.id_board)
					LEFT JOIN {db_prefix}members AS mems ON (mems.id_member = ms.id_member)
					LEFT JOIN {db_prefix}members AS meml ON (meml.id_member = ml.id_member)
					LEFT JOIN {db_prefix}log_topics AS lt ON (lt.id_topic = t.id_topic AND lt.id_member = {int:current_member})
					LEFT JOIN {db_prefix}log_mark_read AS lmr ON (lmr.id_board = t.id_board AND lmr.id_member = {int:current_member})
				WHERE t.id_topic IN ({array_int:topic_list})
				ORDER BY ' . $_REQUEST['sort'] . ($ascending ? '' : ' DESC') . '
				LIMIT ' . count($topics), array('current_member' => $user_info['id'], 'topic_list' => $topics));
        }
        $context['topics'] = array();
        $topic_ids = array();
        while ($row = $db->fetch_assoc($request)) {
            $topic_ids[] = $row['id_topic'];
            if (!empty($modSettings['message_index_preview'])) {
                // Limit them to 128 characters - do this FIRST because it's a lot of wasted censoring otherwise.
                $row['first_body'] = strip_tags(strtr(parse_bbc($row['first_body'], false, $row['id_first_msg']), array('<br />' => "\n", '&nbsp;' => ' ')));
                $row['first_body'] = Util::shorten_text($row['first_body'], !empty($modSettings['preview_characters']) ? $modSettings['preview_characters'] : 128, true);
                // No reply then they are the same, no need to process it again
                if ($row['num_replies'] == 0) {
                    $row['last_body'] == $row['first_body'];
                } else {
                    $row['last_body'] = strip_tags(strtr(parse_bbc($row['last_body'], false, $row['id_last_msg']), array('<br />' => "\n", '&nbsp;' => ' ')));
                    $row['last_body'] = Util::shorten_text($row['last_body'], !empty($modSettings['preview_characters']) ? $modSettings['preview_characters'] : 128, true);
                }
                // Censor the subject and message preview.
                censorText($row['first_subject']);
                censorText($row['first_body']);
                // Don't censor them twice!
                if ($row['id_first_msg'] == $row['id_last_msg']) {
                    $row['last_subject'] = $row['first_subject'];
                    $row['last_body'] = $row['first_body'];
                } else {
                    censorText($row['last_subject']);
                    censorText($row['last_body']);
                }
            } else {
                $row['first_body'] = '';
                $row['last_body'] = '';
                censorText($row['first_subject']);
                if ($row['id_first_msg'] == $row['id_last_msg']) {
                    $row['last_subject'] = $row['first_subject'];
                } else {
                    censorText($row['last_subject']);
                }
            }
            // Decide how many pages the topic should have.
            $topic_length = $row['num_replies'] + 1;
            $messages_per_page = empty($modSettings['disableCustomPerPage']) && !empty($options['messages_per_page']) ? $options['messages_per_page'] : $modSettings['defaultMaxMessages'];
            if ($topic_length > $messages_per_page) {
                $start = -1;
                $pages = constructPageIndex($scripturl . '?topic=' . $row['id_topic'] . '.%1$d;topicseen', $start, $topic_length, $messages_per_page, true, array('prev_next' => false, 'all' => !empty($modSettings['enableAllMessages']) && $topic_length < $modSettings['enableAllMessages']));
            } else {
                $pages = '';
            }
            // We need to check the topic icons exist... you can never be too sure!
            if (!empty($modSettings['messageIconChecks_enable'])) {
                // First icon first... as you'd expect.
                if (!isset($context['icon_sources'][$row['first_icon']])) {
                    $context['icon_sources'][$row['first_icon']] = file_exists($settings['theme_dir'] . '/images/post/' . $row['first_icon'] . '.png') ? 'images_url' : 'default_images_url';
                }
                // Last icon... last... duh.
                if (!isset($context['icon_sources'][$row['last_icon']])) {
                    $context['icon_sources'][$row['last_icon']] = file_exists($settings['theme_dir'] . '/images/post/' . $row['last_icon'] . '.png') ? 'images_url' : 'default_images_url';
                }
            }
            // And build the array.
            $context['topics'][$row['id_topic']] = array('id' => $row['id_topic'], 'first_post' => array('id' => $row['id_first_msg'], 'member' => array('name' => $row['first_poster_name'], 'id' => $row['id_first_member'], 'href' => $scripturl . '?action=profile;u=' . $row['id_first_member'], 'link' => !empty($row['id_first_member']) ? '<a class="preview" href="' . $scripturl . '?action=profile;u=' . $row['id_first_member'] . '" title="' . $txt['profile_of'] . ' ' . $row['first_poster_name'] . '">' . $row['first_poster_name'] . '</a>' : $row['first_poster_name']), 'time' => standardTime($row['first_poster_time']), 'html_time' => htmlTime($row['first_poster_time']), 'timestamp' => forum_time(true, $row['first_poster_time']), 'subject' => $row['first_subject'], 'preview' => $row['first_body'], 'icon' => $row['first_icon'], 'icon_url' => $settings[$context['icon_sources'][$row['first_icon']]] . '/post/' . $row['first_icon'] . '.png', 'href' => $scripturl . '?topic=' . $row['id_topic'] . '.0;topicseen', 'link' => '<a href="' . $scripturl . '?topic=' . $row['id_topic'] . '.0;topicseen">' . $row['first_subject'] . '</a>'), 'last_post' => array('id' => $row['id_last_msg'], 'member' => array('name' => $row['last_poster_name'], 'id' => $row['id_last_member'], 'href' => $scripturl . '?action=profile;u=' . $row['id_last_member'], 'link' => !empty($row['id_last_member']) ? '<a href="' . $scripturl . '?action=profile;u=' . $row['id_last_member'] . '">' . $row['last_poster_name'] . '</a>' : $row['last_poster_name']), 'time' => standardTime($row['last_poster_time']), 'html_time' => htmlTime($row['last_poster_time']), 'timestamp' => forum_time(true, $row['last_poster_time']), 'subject' => $row['last_subject'], 'preview' => $row['last_body'], 'icon' => $row['last_icon'], 'icon_url' => $settings[$context['icon_sources'][$row['last_icon']]] . '/post/' . $row['last_icon'] . '.png', 'href' => $scripturl . '?topic=' . $row['id_topic'] . ($row['num_replies'] == 0 ? '.0' : '.msg' . $row['id_last_msg']) . ';topicseen#msg' . $row['id_last_msg'], 'link' => '<a href="' . $scripturl . '?topic=' . $row['id_topic'] . ($row['num_replies'] == 0 ? '.0' : '.msg' . $row['id_last_msg']) . ';topicseen#msg' . $row['id_last_msg'] . '" rel="nofollow">' . $row['last_subject'] . '</a>'), 'default_preview' => trim($row[!empty($modSettings['message_index_preview']) && $modSettings['message_index_preview'] == 2 ? 'last_body' : 'first_body']), 'new_from' => $row['new_from'], 'new_href' => $scripturl . '?topic=' . $row['id_topic'] . '.msg' . $row['new_from'] . ';topicseen#new', 'href' => $scripturl . '?topic=' . $row['id_topic'] . ($row['num_replies'] == 0 ? '.0' : '.msg' . $row['new_from']) . ';topicseen' . ($row['num_replies'] == 0 ? '' : 'new'), 'link' => '<a href="' . $scripturl . '?topic=' . $row['id_topic'] . ($row['num_replies'] == 0 ? '.0' : '.msg' . $row['new_from']) . ';topicseen#msg' . $row['new_from'] . '" rel="nofollow">' . $row['first_subject'] . '</a>', 'is_sticky' => !empty($modSettings['enableStickyTopics']) && !empty($row['is_sticky']), 'is_locked' => !empty($row['locked']), 'is_poll' => !empty($modSettings['pollMode']) && $row['id_poll'] > 0, 'is_hot' => !empty($modSettings['useLikesNotViews']) ? $row['num_likes'] >= $modSettings['hotTopicPosts'] : $row['num_replies'] >= $modSettings['hotTopicPosts'], 'is_very_hot' => !empty($modSettings['useLikesNotViews']) ? $row['num_likes'] >= $modSettings['hotTopicVeryPosts'] : $row['num_replies'] >= $modSettings['hotTopicVeryPosts'], 'is_posted_in' => false, 'icon' => $row['first_icon'], 'icon_url' => $settings[$context['icon_sources'][$row['first_icon']]] . '/post/' . $row['first_icon'] . '.png', 'subject' => $row['first_subject'], 'pages' => $pages, 'replies' => comma_format($row['num_replies']), 'views' => comma_format($row['num_views']), 'likes' => comma_format($row['num_likes']), 'board' => array('id' => $row['id_board'], 'name' => $row['bname'], 'href' => $scripturl . '?board=' . $row['id_board'] . '.0', 'link' => '<a href="' . $scripturl . '?board=' . $row['id_board'] . '.0">' . $row['bname'] . '</a>'));
            $context['topics'][$row['id_topic']]['first_post']['started_by'] = sprintf($txt['topic_started_by_in'], '<strong>' . $context['topics'][$row['id_topic']]['first_post']['member']['link'] . '</strong>', '<em>' . $context['topics'][$row['id_topic']]['board']['link'] . '</em>');
            determineTopicClass($context['topics'][$row['id_topic']]);
        }
        $db->free_result($request);
        if ($is_topics && !empty($modSettings['enableParticipation']) && !empty($topic_ids)) {
            require_once SUBSDIR . '/MessageIndex.subs.php';
            $topics_participated_in = topicsParticipation($user_info['id'], $topic_ids);
            foreach ($topics_participated_in as $topic) {
                if (empty($context['topics'][$topic['id_topic']]['is_posted_in'])) {
                    $context['topics'][$topic['id_topic']]['is_posted_in'] = true;
                    $context['topics'][$topic['id_topic']]['class'] = 'my_' . $context['topics'][$topic['id_topic']]['class'];
                }
            }
        }
        $context['querystring_board_limits'] = sprintf($context['querystring_board_limits'], $_REQUEST['start']);
        $context['topics_to_mark'] = implode('-', $topic_ids);
        if ($settings['show_mark_read']) {
            // Build the recent button array.
            if ($is_topics) {
                $context['recent_buttons'] = array('markread' => array('text' => !empty($context['no_board_limits']) ? 'mark_as_read' : 'mark_read_short', 'image' => 'markread.png', 'lang' => true, 'custom' => 'onclick="return markunreadButton(this);"', 'url' => $scripturl . '?action=markasread;sa=' . (!empty($context['no_board_limits']) ? 'all' : 'board' . $context['querystring_board_limits']) . ';' . $context['session_var'] . '=' . $context['session_id']));
                if ($context['showCheckboxes']) {
                    $context['recent_buttons']['markselectread'] = array('text' => 'quick_mod_markread', 'image' => 'markselectedread.png', 'lang' => true, 'url' => 'javascript:document.quickModForm.submit();');
                }
                if (!empty($context['topics']) && !$context['showing_all_topics']) {
                    $context['recent_buttons']['readall'] = array('text' => 'unread_topics_all', 'image' => 'markreadall.png', 'lang' => true, 'url' => $scripturl . '?action=unread;all' . $context['querystring_board_limits'], 'active' => true);
                }
            } elseif (!$is_topics && isset($context['topics_to_mark'])) {
                $context['recent_buttons'] = array('markread' => array('text' => 'mark_as_read', 'image' => 'markread.png', 'lang' => true, 'url' => $scripturl . '?action=markasread;sa=unreadreplies;topics=' . $context['topics_to_mark'] . ';' . $context['session_var'] . '=' . $context['session_id']));
                if ($context['showCheckboxes']) {
                    $context['recent_buttons']['markselectread'] = array('text' => 'quick_mod_markread', 'image' => 'markselectedread.png', 'lang' => true, 'url' => 'javascript:document.quickModForm.submit();');
                }
            }
            // Allow mods to add additional buttons here
            call_integration_hook('integrate_recent_buttons');
        }
        // Allow helpdesks and bug trackers and what not to add their own unread data (just add a template_layer to show custom stuff in the template!)
        call_integration_hook('integrate_unread_list');
    }