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WikiChat.php

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DatabaseFunctions.php

<?php /**

  1. set to the directory phpfreechat is installed in

define('WC_PFC_DIRECTORY', 'phpfreechat');

  1. set to false to deny access to anonymous users

define('WC_ALLOW_ANONYMOUS_USERS', true);

  1. message shown when denying anonymous users. Change if you want a
  2. different message. WikiText ok..

define('WC_DENY_ACCESS_MESSAGE', 'You must login to be allowed into this chatroom');

  1. when true there will be a chat room per article. Set to false to have
  2. a single site-wide chat room.

define('WC_ROOM_PER_ARTICLE', true);

if (!defined('MEDIAWIKI')) die ('Not an entry point');

$wgPFC_Directory = WC_PFC_DIRECTORY;

require_once "$IP/$wgPFC_Directory/src/phpfreechat.class.php"; require_once "$IP/extensions/WikiChat/DatabaseFunctions.php";

$wgRoomPerArticle = WC_ROOM_PER_ARTICLE; $wgAllowAnonUsers = WC_ALLOW_ANONYMOUS_USERS; $wgDenyAccessMessage = WC_DENY_ACCESS_MESSAGE; // This is the maximum nickname length. $wgChatMaxNickLen = 30; // This is the maximum message length in characters. $wgChatMaxTextLen = 480; // The maximum number of allowed channels for each user. $wgChatMaxChannels = 6; // This is the maximum number of private message allowed // at the same time for one user. $wgChatMaxPrivMsg = 3; // This is the time to wait between two refreshes, in msecs. $wgChatRefreshDelay = 2000; // This is the number of messages kept in the history. $wgChatMaxMsg = 600; // The maximum number of lines displayed in the window. $wgChatMaxDisplayedLines = 600; // Height of the chat area. $wgChatHeight = "230px"; // msecs until user is disconnected $wgChatTimeout = 600000; // Usernames of those with admin (i.e. chat moderator) rights $wgChatAdmins = array(); // User groups with chat moderator rights $wgChatAdminGroups = array( 'sysop' );

/* Extension variables */ $wgExtensionFunctions[] = 'wfSetupWikiChat'; $wgExtensionCredits['other'][] = array(

   'name' => 'WikiChat',
   'version' => '0.3.9, 2012-08-30, 1.19',
   'author' => '[http://www.wikichat.org/User:Firebreather '.

'User:Firebreather]',

   'url' => 'http://www.wikichat.org/',
   'description' => 'Adds a tab to each article that switches to a 

chatroom', );

class WikiChat {

       // Constructor
       public function WikiChat() {
               global $wgHooks;

               # Add all our needed hooks
               $wgHooks['UnknownAction'][] = $this;
               $wgHooks['SkinTemplateTabs'][] = $this;
               // Vector support
               $wgHooks['SkinTemplateNavigation'][] = $this;
       }

       // main entry point
       public function onUnknownAction($action, $article) {
               global $wgOut, $wgCachePages, $wgTitle, $wgDBprefix, 

$wgDenyAccessMessage;

               $wgCachePages = false;

               if($action == 'chat') {
                       $wgOut->setPageTitle(str_replace('_', ' ', 

$wgTitle->getPrefixedText()));

                       if($this->isAnonDenied()) {

$wgOut->addWikiText($wgDenyAccessMessage);

                               return false;
                       }

                       $params = $this->configurePFC_Params();

                       $tblname = $wgDBprefix."chathistory";

                       $this->createChatHistoryDBTable($tblname);

                       $this->configurePFC_DB_Params($tblname, 

$params);

                       $this->configureNick($params);

                       $this->showChat($params);

                       return false;
               }
               else {
                       return true;
               }
       }

       private function isAnonDenied() {
               global $wgUser, $wgAllowAnonUsers;

               return !$wgAllowAnonUsers && $wgUser->isAnon();
       }

       private function configureNick(&$params) {
               global $wgUser, $wgOut, $wgAllowAnonUsers, 

$wgDenyAccessMessage, $wgTitle;

               $nick = "";

               if($wgUser->isAnon()) {
               }
               else {
                       $nick = $wgUser->getName();
               }

               $params["nick"]          = $nick; // setup the initial nickname

               return $nick;
       }

       private function configurePFC_Params() {
               global $wgTitle, $wgRoomPerArticle, $wgPFC_Directory;
               global $wgOut;
               global $wgChatMaxNickLen, $wgChatMaxTextLen,
                       $wgChatMaxChannels, $wgChatMaxPrivMsg,
                       $wgChatRefreshDelay, $wgChatMaxMsg,  
                       $wgChatMaxDisplayedLines, $wgChatHeight,
                       $wgChatTimeout, $wgChatAdmins, $wgChatAdminGroups,
                       $wgDBprefix;

               // Assign all members of the chat admin groups to be chat admins
               $userTable = $wgDBprefix . 'user';
               $userGroupsTable = $wgDBprefix . 'user_groups';
               if ( !empty ( $wgChatAdminGroups ) ) {
                       $sql = "SELECT user_name
                              FROM `$userTable`
                              JOIN $userGroupsTable ON
                                   $userGroupsTable.ug_user = $userTable.user_id
                              WHERE ( ";
                       $isFirstOne = true;
                       foreach ( $wgChatAdminGroups as $thisGroup ) {
                               if ( $isFirstOne == false ) {
                                       $sql .= " OR ";
                               }
                               $isFirstOne = false;
                               $sql .= "$userGroupsTable.ug_group = '".
                                       "$thisGroup'";
                       }
                       $sql .= " )";
                       $dbr =& wfGetDB( DB_SLAVE );
                       $res = $dbr->query ( $sql );
                       $numRows = $dbr->numRows ( $res );
                       for ( $i = 1; $i <= $numRows; $i++ ) {
                               $row = $dbr->fetchRow( $res );
                               $wgChatAdmins[] = $row['user_name'];
                       }
               }       

               $params["title"]         = "WikiChat";

               // apply room per page or site-wide room configuration option
               if($wgRoomPerArticle) {
                       //replace slashes in the page db key to ensure
                       // chat works for subpages
                       $params["serverid"]      = str_replace('/', 

'##', $wgTitle->getPrefixedText());

               }
               else {
                       $params["serverid"]      = md5(__FILE__);
               }

               $params["data_public_url"] = 

"$wgPFC_Directory/data/public";

               $params["data_public_path"] = 

"$wgPFC_Directory/data/public";

               $params["server_script_url"] = $_SERVER['REQUEST_URI'];
               $params["openlinknewwindow"] = true;
               $params["channels"] = array(str_replace('_', ' ', 

$wgTitle->getPrefixedText()));

               $params["frozen_nick"]    = true;     /* do not allow to 
               change the nickname */
               $params["shownotice"]     = 0;        /* 0 = nothing, 1 

= just nickname changes, 2 = connect/quit, 3 = nick + connect */

               $params["max_nick_len"]   = $wgChatMaxNickLen;
               $params["max_text_len"]   = $wgChatMaxTextLen;
               $params["max_channels"]   = $wgChatMaxChannels;
               $params["max_privmsg"]    = $wgChatMaxPrivMsg;
               $params["refresh_delay"]  = $wgChatRefreshDelay;
               $params["max_msg"]        = $wgChatMaxMsg;
               $params["max_displayed_lines"]  = $wgChatMaxDisplayedLines;
               $params["height"]         = $wgChatHeight;
               $params["debug"]          = false;
               $params["timeout"]        = $wgChatTimeout;
               $params["admins"]          = $wgChatAdmins;

               return $params;
       }

       private function createChatHistoryDBTable($tblname) {
               $dbr =& wfGetDB( DB_SLAVE );

               $sql = "show tables like '$tblname'";
               $res = $dbr->query ( $sql ) ;
               $num_rows = $dbr->numRows($res) + 0;
               $dbr->freeResult( $res );

               //create the chathistory table if it doesn't exist
               if($num_rows == 0) {
                       $sql =
                         "CREATE TABLE IF NOT EXISTS `$tblname` (
                           `server` varchar(32) NOT NULL default ,
                           `group` varchar(64) NOT NULL default ,
                           `subgroup` varchar(64) NOT NULL default ,
                           `leaf` varchar(64) NOT NULL default ,
                           `leafvalue` text NOT NULL,
                           `timestamp` int(11) NOT NULL default 0,
                           PRIMARY KEY  

(`server`,`group`,`subgroup`,`leaf`),

                           INDEX 

(`server`,`group`,`subgroup`,`timestamp`)

                         ) ENGINE=InnoDB;";
                       $ret = wfQuery($sql, DB_WRITE, "");
               }
       }

       private function configurePFC_DB_Params($tblname, &$params) {
               global $wgDBserver, $wgDBname, $wgDBprefix, $wgDBuser, 

$wgDBpassword;

               $params["container_type"]               = "mysql";
               $params["container_cfg_mysql_host"]     = $wgDBserver;
               $params["container_cfg_mysql_database"] = $wgDBname;
               $params["container_cfg_mysql_port"]     = 3306;
               $params["container_cfg_mysql_table"]    = $tblname;
               $params["container_cfg_mysql_username"] = $wgDBuser;
               $params["container_cfg_mysql_password"] = $wgDBpassword;
       }

       private function showChat($params) {
               global $wgOut;

               $pfc = new phpFreeChat($params);
               $wgOut->addHTML($pfc->printChat(true));
$wgOut->addHTML('

Type /help for a list of all commands

');

$wgOut->addWikiText("[http://www.wikichat.org/index.php/WikiChat_help". " More help on WikiChat.org]");

       }

      public function onSkinTemplateTabs( $skin, &$content_actions ) {
               global $wgRequest;

               $action = $wgRequest->getText( 'action' );

               $content_actions['chat'] = array(
                                           'class' => ($action == 

'chat') ? 'selected' : false,

                                           'text' => "Chat",

// Vector support 'href' => $skin->getTitle()->getLocalUrl( 'action=chat' )

  1. 'href' => $skin->mTitle->getLocalURL( 'action=chat' )
                                            );

               return true;
       }

       // Vector support
       public function onSkinTemplateNavigation( $skin, &$links ) {
              return self::onSkinTemplateTabs($skin, $links['views']);
       }

       # Needed in some versions to prevent Special:Version from breaking
       public function __toString() { return 'WikiChat'; }
} /* class WikiChat */

/* Global function */

  1. Called from $wgExtensionFunctions array when initialising extensions

function wfSetupWikiChat() {

       global $wgWikiChat;
       $wgWikiChat = new WikiChat();

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