19 files changed, 307 insertions, 80 deletions
diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index 2873b48fa4..67fba1094d 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -153,7 +153,7 @@ class acp_attachments
 						'img_create_thumbnail'		=> array('lang' => 'CREATE_THUMBNAIL',		'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'img_max_thumb_width'		=> array('lang' => 'MAX_THUMB_WIDTH',		'validate' => 'int:0:999999999999999',	'type' => 'number:0:999999999999999', 'explain' => true, 'append' => ' ' . $user->lang['PIXEL']),
 						'img_min_thumb_filesize'	=> array('lang' => 'MIN_THUMB_FILESIZE',	'validate' => 'int:0:999999999999999',	'type' => 'number:0:999999999999999', 'explain' => true, 'append' => ' ' . $user->lang['BYTES']),
-						'img_imagick'				=> array('lang' => 'IMAGICK_PATH',			'validate' => 'path',	'type' => 'text:20:200', 'explain' => true, 'append' => '&nbsp;&nbsp;<span>[ <a href="' . $this->u_action . '&amp;action=imgmagick">' . $user->lang['SEARCH_IMAGICK'] . '</a> ]</span>'),
+						'img_imagick'				=> array('lang' => 'IMAGICK_PATH',			'validate' => 'absolute_path',	'type' => 'text:20:200', 'explain' => true, 'append' => '&nbsp;&nbsp;<span>[ <a href="' . $this->u_action . '&amp;action=imgmagick">' . $user->lang['SEARCH_IMAGICK'] . '</a> ]</span>'),
 						'img_max'					=> array('lang' => 'MAX_IMAGE_SIZE',		'validate' => 'int:0:9999',	'type' => 'dimension:0:9999', 'explain' => true, 'append' => ' ' . $user->lang['PIXEL']),
 						'img_link'					=> array('lang' => 'IMAGE_LINK_SIZE',		'validate' => 'int:0:9999',	'type' => 'dimension:0:9999', 'explain' => true, 'append' => ' ' . $user->lang['PIXEL']),
 					)
diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index 89fdc8b863..0c9bc0deab 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -174,11 +174,6 @@ class acp_extensions
 					trigger_error($user->lang['EXTENSION_NOT_ENABLEABLE'] . adm_back_link($this->u_action), E_USER_WARNING);
 				}
 
-				if ($phpbb_extension_manager->is_enabled($ext_name))
-				{
-					redirect($this->u_action);
-				}
-
 				try
 				{
 					while ($phpbb_extension_manager->enable_step($ext_name))
diff --git a/phpBB/includes/acp/acp_prune.php b/phpBB/includes/acp/acp_prune.php
index 59f15c4890..6eb213fd7a 100644
--- a/phpBB/includes/acp/acp_prune.php
+++ b/phpBB/includes/acp/acp_prune.php
@@ -507,7 +507,7 @@ class acp_prune
 					AND ug.user_id <> ' . ANONYMOUS . '
 					AND u.user_type <> ' . USER_FOUNDER . '
 					AND ug.user_pending = 0 ' .
-					((!empty($user_ids)) ? 'AND ' . $db->sql_in_set('ug.user_id', $user_ids) : '') . '
+					((!empty($user_ids)) ? ' AND ' . $db->sql_in_set('ug.user_id', $user_ids) : '') . '
 					AND u.user_id = ug.user_id';
 			$result = $db->sql_query($sql);
 
@@ -533,7 +533,7 @@ class acp_prune
 				FROM ' . POSTS_TABLE . ' p, ' . USERS_TABLE . ' u
 				WHERE u.user_id <> ' . ANONYMOUS . '
 					AND u.user_type <> ' . USER_FOUNDER .
-					((!empty($user_ids)) ? 'AND ' . $db->sql_in_set('p.poster_id', $user_ids) : '') . '
+					((!empty($user_ids)) ? ' AND ' . $db->sql_in_set('p.poster_id', $user_ids) : '') . '
 					AND ' . $db->sql_in_set('p.post_visibility', array(ITEM_UNAPPROVED, ITEM_REAPPROVE)) . '
 					AND u.user_id = p.poster_id
 				GROUP BY p.poster_id
diff --git a/phpBB/includes/acp/acp_search.php b/phpBB/includes/acp/acp_search.php
index eddc6871f8..9ff999567a 100644
--- a/phpBB/includes/acp/acp_search.php
+++ b/phpBB/includes/acp/acp_search.php
@@ -449,7 +449,6 @@ class acp_search
 
 		$search = null;
 		$error = false;
-		$search_options = '';
 		foreach ($search_types as $type)
 		{
 			if ($this->init_search($type, $search, $error) || !method_exists($search, 'index_created'))
diff --git a/phpBB/includes/acp/acp_users.php b/phpBB/includes/acp/acp_users.php
index 3c957a7093..8c17fb6311 100644
--- a/phpBB/includes/acp/acp_users.php
+++ b/phpBB/includes/acp/acp_users.php
@@ -1414,6 +1414,18 @@ class acp_users
 						$error[] = 'FORM_INVALID';
 					}
 
+					/**
+					* Validate profile data in ACP before submitting to the database
+					*
+					* @event core.acp_users_profile_validate
+					* @var	bool	submit		Flag indicating if submit button has been pressed
+					* @var	array	data		Array with user profile data
+					* @var	array	error		Array with the form errors
+					* @since 3.1.4-RC1
+					*/
+					$vars = array('submit', 'data', 'error');
+					extract($phpbb_dispatcher->trigger_event('core.acp_users_profile_validate', compact($vars)));
+
 					if (!sizeof($error))
 					{
 						$sql_ary = array(
@@ -1429,9 +1441,10 @@ class acp_users
 						* @var	array	data		Array with user profile data
 						* @var	int		user_id		The user id
 						* @var	array	user_row	Array with the full user data
+						* @var	array	sql_ary		Array with sql data
 						* @since 3.1.4-RC1
 						*/
-						$vars = array('cp_data', 'data', 'user_id', 'user_row');
+						$vars = array('cp_data', 'data', 'user_id', 'user_row', 'sql_ary');
 						extract($phpbb_dispatcher->trigger_event('core.acp_users_profile_modify_sql_ary', compact($vars)));
 
 						$sql = 'UPDATE ' . USERS_TABLE . '
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 940484a0ea..573df9e55d 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2920,19 +2920,6 @@ function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = fa
 		// Special cases... determine
 		switch ($result['status'])
 		{
-			case LOGIN_ERROR_ATTEMPTS:
-
-				$captcha = $phpbb_container->get('captcha.factory')->get_instance($config['captcha_plugin']);
-				$captcha->init(CONFIRM_LOGIN);
-				// $captcha->reset();
-
-				$template->assign_vars(array(
-					'CAPTCHA_TEMPLATE'			=> $captcha->get_template(),
-				));
-
-				$err = $user->lang[$result['error_msg']];
-			break;
-
 			case LOGIN_ERROR_PASSWORD_CONVERT:
 				$err = sprintf(
 					$user->lang[$result['error_msg']],
@@ -2943,6 +2930,17 @@ function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = fa
 				);
 			break;
 
+			case LOGIN_ERROR_ATTEMPTS:
+
+				$captcha = $phpbb_container->get('captcha.factory')->get_instance($config['captcha_plugin']);
+				$captcha->init(CONFIRM_LOGIN);
+				// $captcha->reset();
+
+				$template->assign_vars(array(
+					'CAPTCHA_TEMPLATE'			=> $captcha->get_template(),
+				));
+			// no break;
+
 			// Username, password, etc...
 			default:
 				$err = $user->lang[$result['error_msg']];
@@ -3347,7 +3345,7 @@ function get_preg_expression($mode)
 		case 'email':
 			// Regex written by James Watts and Francisco Jose Martin Moreno
 			// http://fightingforalostcause.net/misc/2006/compare-email-regex.php
-			return '([\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+\.)*(?:[\w\!\#$\%\'\*\+\-\/\=\?\^\`{\|\}\~]|&amp;)+@((((([a-z0-9]{1}[a-z0-9\-]{0,62}[a-z0-9]{1})|[a-z])\.)+[a-z]{2,63})|(\d{1,3}\.){3}\d{1,3}(\:\d{1,5})?)';
+			return '((?:[\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+\.)*(?:[\w\!\#$\%\'\*\+\-\/\=\?\^\`{\|\}\~]|&amp;)+)@((((([a-z0-9]{1}[a-z0-9\-]{0,62}[a-z0-9]{1})|[a-z])\.)+[a-z]{2,63})|(\d{1,3}\.){3}\d{1,3}(\:\d{1,5})?)';
 		break;
 
 		case 'bbcode_htm':
@@ -4247,9 +4245,10 @@ function obtain_users_online($item_id = 0, $item = 'forum')
 */
 function obtain_users_online_string($online_users, $item_id = 0, $item = 'forum')
 {
-	global $config, $db, $user, $auth;
+	global $config, $db, $user, $auth, $phpbb_dispatcher;
 
-	$user_online_link = $online_userlist = '';
+	$guests_online = $hidden_online = $l_online_users = $online_userlist = $visible_online = '';
+	$user_online_link = $rowset = array();
 	// Need caps version of $item for language-strings
 	$item_caps = strtoupper($item);
 
@@ -4259,9 +4258,28 @@ function obtain_users_online_string($online_users, $item_id = 0, $item = 'forum'
 				FROM ' . USERS_TABLE . '
 				WHERE ' . $db->sql_in_set('user_id', $online_users['online_users']) . '
 				ORDER BY username_clean ASC';
+
+		/**
+		* Modify SQL query to obtain online users data
+		*
+		* @event core.obtain_users_online_string_sql
+		* @var	array	online_users	Array with online users data
+		*								from obtain_users_online()
+		* @var	int		item_id			Restrict online users to item id
+		* @var	string	item			Restrict online users to a certain
+		*								session item, e.g. forum for
+		*								session_forum_id
+		* @var	string	sql				SQL query to obtain users online data
+		* @since 3.1.4-RC1
+		*/
+		$vars = array('online_users', 'item_id', 'item', 'sql');
+		extract($phpbb_dispatcher->trigger_event('core.obtain_users_online_string_sql', compact($vars)));
+
 		$result = $db->sql_query($sql);
+		$rowset = $db->sql_fetchrowset($result);
+		$db->sql_freeresult($result);
 
-		while ($row = $db->sql_fetchrow($result))
+		foreach ($rowset as $row)
 		{
 			// User is logged in and therefore not a guest
 			if ($row['user_id'] != ANONYMOUS)
@@ -4273,13 +4291,12 @@ function obtain_users_online_string($online_users, $item_id = 0, $item = 'forum'
 
 				if (!isset($online_users['hidden_users'][$row['user_id']]) || $auth->acl_get('u_viewonline'))
 				{
-					$user_online_link = get_username_string(($row['user_type'] <> USER_IGNORE) ? 'full' : 'no_profile', $row['user_id'], $row['username'], $row['user_colour']);
-					$online_userlist .= ($online_userlist != '') ? ', ' . $user_online_link : $user_online_link;
+					$user_online_link[$row['user_id']] = get_username_string(($row['user_type'] <> USER_IGNORE) ? 'full' : 'no_profile', $row['user_id'], $row['username'], $row['user_colour']);
 				}
 			}
 		}
-		$db->sql_freeresult($result);
 	}
+	$online_userlist = implode(', ', $user_online_link);
 
 	if (!$online_userlist)
 	{
@@ -4312,6 +4329,33 @@ function obtain_users_online_string($online_users, $item_id = 0, $item = 'forum'
 		$l_online_users = $user->lang('ONLINE_USERS_TOTAL', (int) $online_users['total_online'], $visible_online, $hidden_online);
 	}
 
+	/**
+	* Modify online userlist data
+	*
+	* @event core.obtain_users_online_string_modify
+	* @var	array	online_users		Array with online users data
+	*									from obtain_users_online()
+	* @var	int		item_id				Restrict online users to item id
+	* @var	string	item				Restrict online users to a certain
+	*									session item, e.g. forum for
+	*									session_forum_id
+	* @var	array	rowset				Array with online users data
+	* @var	array	user_online_link	Array with online users items (usernames)
+	* @var	string	online_userlist		String containing users online list
+	* @var	string	l_online_users		String with total online users count info
+	* @since 3.1.4-RC1
+	*/
+	$vars = array(
+		'online_users',
+		'item_id',
+		'item',
+		'rowset',
+		'user_online_link',
+		'online_userlist',
+		'l_online_users',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.obtain_users_online_string_modify', compact($vars)));
+
 	return array(
 		'online_userlist'	=> $online_userlist,
 		'l_online_users'	=> $l_online_users,
diff --git a/phpBB/includes/functions_acp.php b/phpBB/includes/functions_acp.php
index e30c6da505..a53a54368e 100644
--- a/phpBB/includes/functions_acp.php
+++ b/phpBB/includes/functions_acp.php
@@ -550,6 +550,9 @@ function validate_config_vars($config_vars, &$cfg_array, &$error)
 
 				$cfg_array[$config_name] = trim($destination);
 
+			// Absolute file path
+			case 'absolute_path':
+			case 'absolute_path_writable':
 			// Path being relative (still prefixed by phpbb_root_path), but with the ability to escape the root dir...
 			case 'path':
 			case 'wpath':
@@ -568,20 +571,22 @@ function validate_config_vars($config_vars, &$cfg_array, &$error)
 					break;
 				}
 
-				if (!file_exists($phpbb_root_path . $cfg_array[$config_name]))
+				$path = in_array($config_definition['validate'], array('wpath', 'path', 'rpath', 'rwpath')) ? $phpbb_root_path . $cfg_array[$config_name] : $cfg_array[$config_name];
+
+				if (!file_exists($path))
 				{
 					$error[] = sprintf($user->lang['DIRECTORY_DOES_NOT_EXIST'], $cfg_array[$config_name]);
 				}
 
-				if (file_exists($phpbb_root_path . $cfg_array[$config_name]) && !is_dir($phpbb_root_path . $cfg_array[$config_name]))
+				if (file_exists($path) && !is_dir($path))
 				{
 					$error[] = sprintf($user->lang['DIRECTORY_NOT_DIR'], $cfg_array[$config_name]);
 				}
 
 				// Check if the path is writable
-				if ($config_definition['validate'] == 'wpath' || $config_definition['validate'] == 'rwpath')
+				if ($config_definition['validate'] == 'wpath' || $config_definition['validate'] == 'rwpath' || $config_definition['validate'] === 'absolute_path_writable')
 				{
-					if (file_exists($phpbb_root_path . $cfg_array[$config_name]) && !phpbb_is_writable($phpbb_root_path . $cfg_array[$config_name]))
+					if (file_exists($path) && !phpbb_is_writable($path))
 					{
 						$error[] = sprintf($user->lang['DIRECTORY_NOT_WRITABLE'], $cfg_array[$config_name]);
 					}
diff --git a/phpBB/includes/functions_admin.php b/phpBB/includes/functions_admin.php
index b016659541..79f9db2f3f 100644
--- a/phpBB/includes/functions_admin.php
+++ b/phpBB/includes/functions_admin.php
@@ -618,7 +618,7 @@ function move_posts($post_ids, $topic_id, $auto_sync = true)
 */
 function delete_topics($where_type, $where_ids, $auto_sync = true, $post_count_sync = true, $call_delete_posts = true)
 {
-	global $db, $config, $phpbb_container;
+	global $db, $config, $phpbb_container, $phpbb_dispatcher;
 
 	$approved_topics = 0;
 	$forum_ids = $topic_ids = array();
@@ -672,6 +672,20 @@ function delete_topics($where_type, $where_ids, $auto_sync = true, $post_count_s
 
 	$table_ary = array(BOOKMARKS_TABLE, TOPICS_TRACK_TABLE, TOPICS_POSTED_TABLE, POLL_VOTES_TABLE, POLL_OPTIONS_TABLE, TOPICS_WATCH_TABLE, TOPICS_TABLE);
 
+	/**
+	 * Perform additional actions before topic(s) deletion
+	 *
+	 * @event core.delete_topics_before_query
+	 * @var	array	table_ary	Array of tables from which all rows will be deleted that hold a topic_id occuring in topic_ids
+	 * @var	array	topic_ids	Array of topic ids to delete
+	 * @since 3.1.4-RC1
+	 */
+	$vars = array(
+			'table_ary',
+			'topic_ids',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.delete_topics_before_query', compact($vars)));
+
 	foreach ($table_ary as $table)
 	{
 		$sql = "DELETE FROM $table
@@ -680,6 +694,18 @@ function delete_topics($where_type, $where_ids, $auto_sync = true, $post_count_s
 	}
 	unset($table_ary);
 
+	/**
+	 * Perform additional actions after topic(s) deletion
+	 *
+	 * @event core.delete_topics_after_query
+	 * @var	array	topic_ids	Array of topic ids that were deleted
+	 * @since 3.1.4-RC1
+	 */
+	$vars = array(
+			'topic_ids',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.delete_topics_after_query', compact($vars)));
+
 	$moved_topic_ids = array();
 
 	// update the other forums
diff --git a/phpBB/includes/functions_display.php b/phpBB/includes/functions_display.php
index 31cf43e599..b62b514293 100644
--- a/phpBB/includes/functions_display.php
+++ b/phpBB/includes/functions_display.php
@@ -375,6 +375,28 @@ function display_forums($root_data = '', $display_moderators = true, $return_mod
 		get_moderators($forum_moderators, $forum_ids_moderator);
 	}
 
+	/**
+	* Event to perform additional actions before the forum list is being generated
+	*
+	* @event core.display_forums_before
+	* @var	array	active_forum_ary	Array with forum data to display active topics
+	* @var	bool	display_moderators	Flag indicating if we display forum moderators
+	* @var	array	forum_moderators	Array with forum moderators list
+	* @var	array	forum_rows			Data array of all forums we display
+	* @var	bool	return_moderators	Flag indicating if moderators list should be returned
+	* @var	array	root_data			Array with the root forum data
+	* @since 3.1.4-RC1
+	*/
+	$vars = array(
+		'active_forum_ary',
+		'display_moderators',
+		'forum_moderators',
+		'forum_rows',
+		'return_moderators',
+		'root_data',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.display_forums_before', compact($vars)));
+
 	// Used to tell whatever we have to create a dummy category or not.
 	$last_catless = true;
 	foreach ($forum_rows as $row)
diff --git a/phpBB/includes/functions_mcp.php b/phpBB/includes/functions_mcp.php
index 811d49f1de..ed96dcf338 100644
--- a/phpBB/includes/functions_mcp.php
+++ b/phpBB/includes/functions_mcp.php
@@ -368,7 +368,7 @@ function phpbb_get_pm_data($pm_ids)
 */
 function phpbb_mcp_sorting($mode, &$sort_days, &$sort_key, &$sort_dir, &$sort_by_sql, &$sort_order_sql, &$total, $forum_id = 0, $topic_id = 0, $where_sql = 'WHERE')
 {
-	global $db, $user, $auth, $template;
+	global $db, $user, $auth, $template, $phpbb_dispatcher;
 
 	$sort_days = request_var('st', 0);
 	$min_time = ($sort_days) ? time() - ($sort_days * 86400) : 0;
@@ -553,6 +553,56 @@ function phpbb_mcp_sorting($mode, &$sort_days, &$sort_key, &$sort_dir, &$sort_by
 			break;
 	}
 
+	// Default total to -1 to allow editing by the event
+	$total = -1;
+
+	/**
+	* This event allows you to control the SQL query used to get the total number
+	* of reports the user can access.
+	*
+	* This total is used for the pagination and for displaying the total number
+	* of reports to the user
+	*
+	*
+	* @event core.mcp_sorting_query_before
+	* @var	string	sql					The current SQL search string
+	* @var	string	mode				An id related to the module(s) the user is viewing
+	* @var	string	type				Which kind of information is this being used for displaying. Posts, topics, etc...
+	* @var	int		forum_id			The forum id of the posts the user is trying to access, if not 0
+	* @var	int		topic_id			The topic id of the posts the user is trying to access, if not 0
+	* @var	int		sort_days			The max age of the oldest report to be shown, in days
+	* @var	string	sort_key			The way the user has decided to sort the data.
+	*									The valid values must be in the keys of the sort_by_* variables
+	* @var	string	sort_dir			Either 'd' for "DESC" or 'a' for 'ASC' in the SQL query
+	* @var	int		limit_days			The possible max ages of the oldest report for the user to choose, in days.
+	* @var	array	sort_by_sql			SQL text (values) for the possible names of the ways of sorting data (keys).
+	* @var	array	sort_by_text		Language text (values) for the possible names of the ways of sorting data (keys).
+	* @var	int		min_time			Integer with the minimum post time that the user is searching for
+	* @var	int		limit_time_sql		Time limiting options used in the SQL query.
+	* @var	int		total				The total number of reports that exist. Only set if you want to override the result
+	* @var	string	where_sql			Extra information included in the WHERE clause. It must end with "WHERE" or "AND" or "OR".
+	*									Set to "WHERE" and set total above -1 to override the total value
+	* @since 3.1.4-RC1
+	*/
+	$vars = array(
+		'sql',
+		'mode',
+		'type',
+		'forum_id',
+		'topic_id',
+		'sort_days',
+		'sort_key',
+		'sort_dir',
+		'limit_days',
+		'sort_by_sql',
+		'sort_by_text',
+		'min_time',
+		'limit_time_sql',
+		'total',
+		'where_sql',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.mcp_sorting_query_before', compact($vars)));
+
 	if (!isset($sort_by_sql[$sort_key]))
 	{
 		$sort_key = $default_key;
@@ -584,7 +634,7 @@ function phpbb_mcp_sorting($mode, &$sort_days, &$sort_key, &$sort_dir, &$sort_by
 		$total = (int) $db->sql_fetchfield('total');
 		$db->sql_freeresult($result);
 	}
-	else
+	else if ($total < -1)
 	{
 		$total = -1;
 	}
diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index f3c49badfe..a06d6f4c35 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -1036,7 +1036,7 @@ function load_drafts($topic_id = 0, $forum_id = 0, $id = 0, $pm_action = '', $ms
 */
 function topic_review($topic_id, $forum_id, $mode = 'topic_review', $cur_post_id = 0, $show_quote_button = true)
 {
-	global $user, $auth, $db, $template, $bbcode, $cache;
+	global $user, $auth, $db, $template, $cache;
 	global $config, $phpbb_root_path, $phpEx, $phpbb_container, $phpbb_dispatcher;
 
 	$phpbb_content_visibility = $phpbb_container->get('content.visibility');
@@ -1094,13 +1094,11 @@ function topic_review($topic_id, $forum_id, $mode = 'topic_review', $cur_post_id
 	$sql = $db->sql_build_query('SELECT', $sql_ary);
 	$result = $db->sql_query($sql);
 
-	$bbcode_bitfield = '';
 	$rowset = array();
 	$has_attachments = false;
 	while ($row = $db->sql_fetchrow($result))
 	{
 		$rowset[$row['post_id']] = $row;
-		$bbcode_bitfield = $bbcode_bitfield | base64_decode($row['bbcode_bitfield']);
 
 		if ($row['post_attachment'])
 		{
@@ -1109,13 +1107,6 @@ function topic_review($topic_id, $forum_id, $mode = 'topic_review', $cur_post_id
 	}
 	$db->sql_freeresult($result);
 
-	// Instantiate BBCode class
-	if (!isset($bbcode) && $bbcode_bitfield !== '')
-	{
-		include_once($phpbb_root_path . 'includes/bbcode.' . $phpEx);
-		$bbcode = new bbcode(base64_encode($bbcode_bitfield));
-	}
-
 	// Grab extensions
 	$extensions = $attachments = array();
 	if ($has_attachments && $auth->acl_get('u_download') && $auth->acl_get('f_download', $forum_id))
diff --git a/phpBB/includes/functions_privmsgs.php b/phpBB/includes/functions_privmsgs.php
index e693305246..8e1561b842 100644
--- a/phpBB/includes/functions_privmsgs.php
+++ b/phpBB/includes/functions_privmsgs.php
@@ -1957,7 +1957,7 @@ function submit_pm($mode, $subject, &$data, $put_in_outbox = true)
 */
 function message_history($msg_id, $user_id, $message_row, $folder, $in_post_mode = false)
 {
-	global $db, $user, $config, $template, $phpbb_root_path, $phpEx, $auth, $bbcode;
+	global $db, $user, $config, $template, $phpbb_root_path, $phpEx, $auth;
 
 	// Select all receipts and the author from the pm we currently view, to only display their pm-history
 	$sql = 'SELECT author_id, user_id
@@ -2009,7 +2009,6 @@ function message_history($msg_id, $user_id, $message_row, $folder, $in_post_mode
 	$title = $row['message_subject'];
 
 	$rowset = array();
-	$bbcode_bitfield = '';
 	$folder_url = append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm') . '&amp;folder=';
 
 	do
@@ -2025,7 +2024,6 @@ function message_history($msg_id, $user_id, $message_row, $folder, $in_post_mode
 		else
 		{
 			$rowset[$row['msg_id']] = $row;
-			$bbcode_bitfield = $bbcode_bitfield | base64_decode($row['bbcode_bitfield']);
 		}
 	}
 	while ($row = $db->sql_fetchrow($result));
@@ -2036,16 +2034,6 @@ function message_history($msg_id, $user_id, $message_row, $folder, $in_post_mode
 		return false;
 	}
 
-	// Instantiate BBCode class
-	if ((empty($bbcode) || $bbcode === false) && $bbcode_bitfield !== '')
-	{
-		if (!class_exists('bbcode'))
-		{
-			include($phpbb_root_path . 'includes/bbcode.' . $phpEx);
-		}
-		$bbcode = new bbcode(base64_encode($bbcode_bitfield));
-	}
-
 	$title = censor_text($title);
 
 	$url = append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm');
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index acf5649ed5..9cd662027e 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -398,7 +398,7 @@ function user_add($user_row, $cp_data = false, $notifications_data = null)
  */
 function user_delete($mode, $user_ids, $retain_username = true)
 {
-	global $cache, $config, $db, $user, $phpbb_dispatcher;
+	global $cache, $config, $db, $user, $phpbb_dispatcher, $phpbb_container;
 	global $phpbb_root_path, $phpEx;
 
 	$db->sql_transaction('begin');
@@ -672,6 +672,9 @@ function user_delete($mode, $user_ids, $retain_username = true)
 	}
 	phpbb_delete_users_pms($user_ids);
 
+	$phpbb_notifications = $phpbb_container->get('notification_manager');
+	$phpbb_notifications->delete_notifications('notification.type.admin_activate_user', $user_ids);
+
 	$db->sql_transaction('commit');
 
 	/**
diff --git a/phpBB/includes/mcp/mcp_topic.php b/phpBB/includes/mcp/mcp_topic.php
index 3a456169d5..8347830d0f 100644
--- a/phpBB/includes/mcp/mcp_topic.php
+++ b/phpBB/includes/mcp/mcp_topic.php
@@ -147,21 +147,13 @@ function mcp_topic_view($id, $mode, $action)
 	$result = $db->sql_query_limit($sql, $posts_per_page, $start);
 
 	$rowset = $post_id_list = array();
-	$bbcode_bitfield = '';
 	while ($row = $db->sql_fetchrow($result))
 	{
 		$rowset[] = $row;
 		$post_id_list[] = $row['post_id'];
-		$bbcode_bitfield = $bbcode_bitfield | base64_decode($row['bbcode_bitfield']);
 	}
 	$db->sql_freeresult($result);
 
-	if ($bbcode_bitfield !== '')
-	{
-		include_once($phpbb_root_path . 'includes/bbcode.' . $phpEx);
-		$bbcode = new bbcode(base64_encode($bbcode_bitfield));
-	}
-
 	$topic_tracking_info = array();
 
 	// Get topic tracking info
@@ -267,6 +259,8 @@ function mcp_topic_view($id, $mode, $action)
 		* @var	int		current_row_number	Number of the post on this page
 		* @var	array	post_row			Template block array of the current post
 		* @var	array	row					Array with original post and user data
+		* @var	array	topic_info			Array with topic data
+		* @var	int		total				Total posts count
 		* @since 3.1.4-RC1
 		*/
 		$vars = array(
@@ -278,6 +272,8 @@ function mcp_topic_view($id, $mode, $action)
 			'current_row_number',
 			'post_row',
 			'row',
+			'topic_info',
+			'total',
 		);
 		extract($phpbb_dispatcher->trigger_event('core.mcp_topic_review_modify_row', compact($vars)));
 
diff --git a/phpBB/includes/message_parser.php b/phpBB/includes/message_parser.php
index 04a2726d22..63e027cd66 100644
--- a/phpBB/includes/message_parser.php
+++ b/phpBB/includes/message_parser.php
@@ -21,6 +21,19 @@ if (!defined('IN_PHPBB'))
 
 if (!class_exists('bbcode'))
 {
+	// The following lines are for extensions which include message_parser.php
+	// while $phpbb_root_path and $phpEx are out of the script scope
+	// which may lead to the 'Undefined variable' and 'failed to open stream' errors
+	if (!isset($phpbb_root_path))
+	{
+		global $phpbb_root_path;
+	}
+
+	if (!isset($phpEx))
+	{
+		global $phpEx;
+	}
+
 	include($phpbb_root_path . 'includes/bbcode.' . $phpEx);
 }
 
diff --git a/phpBB/includes/ucp/ucp_pm_compose.php b/phpBB/includes/ucp/ucp_pm_compose.php
index f3b59186a6..51018e3a5d 100644
--- a/phpBB/includes/ucp/ucp_pm_compose.php
+++ b/phpBB/includes/ucp/ucp_pm_compose.php
@@ -90,6 +90,32 @@ function compose_pm($id, $mode, $action, $user_folders = array())
 	// we include the language file here
 	$user->add_lang('viewtopic');
 
+	/**
+	* Modify the default vars before composing a PM
+	*
+	* @event core.ucp_pm_compose_modify_data
+	* @var	int		msg_id					post_id in the page request
+	* @var	int		to_user_id				The id of whom the message is to
+	* @var	int		to_group_id				The id of the group the message is to
+	* @var	bool	submit					Whether the form has been submitted
+	* @var	bool	preview					Whether the user is previewing the PM or not
+	* @var	string	action					One of: post, reply, quote, forward, quotepost, edit, delete, smilies
+	* @var	bool	delete					Whether the user is deleting the PM
+	* @var	int		reply_to_all			Value of reply_to_all request variable.
+	* @since 3.1.4-RC1
+	*/
+	$vars = array(
+		'msg_id',
+		'to_user_id',
+		'to_group_id',
+		'submit',
+		'preview',
+		'action',
+		'delete',
+		'reply_to_all',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.ucp_pm_compose_modify_data', compact($vars)));
+
 	// Output PM_TO box if message composing
 	if ($action != 'edit')
 	{
diff --git a/phpBB/includes/ucp/ucp_pm_viewmessage.php b/phpBB/includes/ucp/ucp_pm_viewmessage.php
index 888c2e6825..d81c4ce7fe 100644
--- a/phpBB/includes/ucp/ucp_pm_viewmessage.php
+++ b/phpBB/includes/ucp/ucp_pm_viewmessage.php
@@ -53,15 +53,6 @@ function view_message($id, $mode, $folder_id, $msg_id, $folder, $message_row)
 	// Grab icons
 	$icons = $cache->obtain_icons();
 
-	$bbcode = false;
-
-	// Instantiate BBCode if need be
-	if ($message_row['bbcode_bitfield'])
-	{
-		include($phpbb_root_path . 'includes/bbcode.' . $phpEx);
-		$bbcode = new bbcode($message_row['bbcode_bitfield']);
-	}
-
 	// Load the custom profile fields
 	if ($config['load_cpf_pm'])
 	{
diff --git a/phpBB/includes/ucp/ucp_profile.php b/phpBB/includes/ucp/ucp_profile.php
index c1cdcf88ca..8d8d42e742 100644
--- a/phpBB/includes/ucp/ucp_profile.php
+++ b/phpBB/includes/ucp/ucp_profile.php
@@ -114,6 +114,18 @@ class ucp_profile
 						$error[] = 'FORM_INVALID';
 					}
 
+					/**
+					* Validate user data on editing registration data in UCP
+					*
+					* @event core.ucp_profile_reg_details_validate
+					* @var	array	data			Array with user profile data
+					* @var	bool	submit			Flag indicating if submit button has been pressed
+					* @var array	error			Array of any generated errors
+					* @since 3.1.4-RC1
+					*/
+					$vars = array('data', 'submit', 'error');
+					extract($phpbb_dispatcher->trigger_event('core.ucp_profile_reg_details_validate', compact($vars)));
+
 					if (!sizeof($error))
 					{
 						$sql_ary = array(
@@ -353,6 +365,18 @@ class ucp_profile
 						$error[] = 'FORM_INVALID';
 					}
 
+					/**
+					* Validate user data on editing profile in UCP
+					*
+					* @event core.ucp_profile_validate_profile_info
+					* @var	array	data			Array with user profile data
+					* @var	bool	submit			Flag indicating if submit button has been pressed
+					* @var array	error			Array of any generated errors
+					* @since 3.1.4-RC1
+					*/
+					$vars = array('data', 'submit', 'error');
+					extract($phpbb_dispatcher->trigger_event('core.ucp_profile_validate_profile_info', compact($vars)));
+
 					if (!sizeof($error))
 					{
 						$data['notify'] = $user->data['user_notify_type'];
@@ -380,9 +404,10 @@ class ucp_profile
 						* @event core.ucp_profile_info_modify_sql_ary
 						* @var	array	cp_data		Array with the user custom profile fields data
 						* @var	array	data		Array with user profile data
+						* @var  array	sql_ary		user options data we update
 						* @since 3.1.4-RC1
 						*/
-						$vars = array('cp_data', 'data');
+						$vars = array('cp_data', 'data', 'sql_ary');
 						extract($phpbb_dispatcher->trigger_event('core.ucp_profile_info_modify_sql_ary', compact($vars)));
 
 						$sql = 'UPDATE ' . USERS_TABLE . '
diff --git a/phpBB/includes/ucp/ucp_register.php b/phpBB/includes/ucp/ucp_register.php
index 14f6a8bc02..0ee45b0706 100644
--- a/phpBB/includes/ucp/ucp_register.php
+++ b/phpBB/includes/ucp/ucp_register.php
@@ -30,7 +30,7 @@ class ucp_register
 	function main($id, $mode)
 	{
 		global $config, $db, $user, $auth, $template, $phpbb_root_path, $phpEx;
-		global $request, $phpbb_container;
+		global $request, $phpbb_container, $phpbb_dispatcher;
 
 		//
 		if ($config['require_activation'] == USER_ACTIVATION_DISABLE ||
@@ -197,6 +197,19 @@ class ucp_register
 			'lang'				=> basename(request_var('lang', $user->lang_name)),
 			'tz'				=> request_var('tz', $timezone),
 		);
+		/**
+		* Add UCP register data before they are assigned to the template or submitted
+		*
+		* To assign data to the template, use $template->assign_vars()
+		*
+		* @event core.ucp_register_data_before
+		* @var	bool	submit		Do we display the form only
+		*							or did the user press submit
+		* @var	array	data		Array with current ucp registration data
+		* @since 3.1.4-RC1
+		*/
+		$vars = array('submit', 'data');
+		extract($phpbb_dispatcher->trigger_event('core.ucp_register_data_before', compact($vars)));
 
 		// Check and initialize some variables if needed
 		if ($submit)
@@ -257,6 +270,19 @@ class ucp_register
 					$error[] = $user->lang['NEW_PASSWORD_ERROR'];
 				}
 			}
+			/**
+			* Check UCP registration data after they are submitted
+			*
+			* @event core.ucp_register_data_after
+			* @var	bool	submit		Do we display the form only
+			*							or did the user press submit
+			* @var	array 	data		Array with current ucp registration data
+			* @var	array	cp_data		Array with custom profile fields data
+			* @var	array 	error		Array with list of errors
+			* @since 3.1.4-RC1
+			*/
+			$vars = array('submit', 'data', 'cp_data', 'error');
+			extract($phpbb_dispatcher->trigger_event('core.ucp_register_data_after', compact($vars)));
 
 			if (!sizeof($error))
 			{
@@ -319,6 +345,20 @@ class ucp_register
 				{
 					$user_row['user_new'] = 1;
 				}
+				/**
+				* Add into $user_row before user_add
+				*
+				* user_add allows adding more data into the users table
+				*
+				* @event core.ucp_register_user_row_after
+				* @var	bool	submit		Do we display the form only
+				*							or did the user press submit
+				* @var	array	cp_data		Array with custom profile fields data
+				* @var	array	user_row	Array with current ucp registration data
+				* @since 3.1.4-RC1
+				*/
+				$vars = array('submit', 'cp_data', 'user_row');
+				extract($phpbb_dispatcher->trigger_event('core.ucp_register_user_row_after', compact($vars)));
 
 				// Register user...
 				$user_id = user_add($user_row, $cp_data);