source: trunk/common/utils.php @ 1778

<?php

    /*
     * Moved from explore/includes/utils.php
     */

    function GetLoggedInStateFromWikiCookies(){
            # we can only check cookies (there's no DB with omExplore), so 
            # we'll check cookie from the wiki against omExplore cookie;
            # we have to have usernames matching
        if( isset( $_COOKIE[ OMWIKI_DATABASE_NAME . '_' . OMWIKI_DB_TABLE_PREFIX . 'UserName' ] ) 
               && isset( $_COOKIE[ 'omCollabExplore' ] )
                 && $_COOKIE[ OMWIKI_DATABASE_NAME . '_' . OMWIKI_DB_TABLE_PREFIX . 'UserName' ] == $_COOKIE[ 'omCollabExplore' ] ){
                    return true;
            }
    }

    function GetAvatar( $iUserId, $sSize = 's' ){
            $sWikiUploadDir  = OMCOLLAB_DOCROOT . OMWIKI_SCRIPT_PATH . '/images';
            $aMatches        = glob("$sWikiUploadDir/avatars/" . OMWIKI_DATABASE_NAME . '_' . "{$iUserId}_$sSize.*");
            if (count($aMatches)<1) $aMatches = glob("$sWikiUploadDir/avatars/default_$sSize.*");
            if (count($aMatches)) {
                    $sAvatarSrc = str_ireplace( OMCOLLAB_DOCROOT, '', $aMatches[0] );
            }
            return $sAvatarSrc;
    }

    /*
     * Moved from home/includes/utils.php
     */
    
    /**
     * Generate Server Doman like http://waterloo.openmethodology.org
     * TODO: it can be replaced by a setting options
     *
     * Xiping Wang 2009-04-29
     *
     * @return unknown_type
     */
    if(!function_exists('gethostname')){
      function getHostName(){
    
        $server_name = (!empty($_SERVER['HTTP_HOST'])) ? strtolower($_SERVER['HTTP_HOST']) : ((!empty($_SERVER['SERVER_NAME'])) ? $_SERVER['SERVER_NAME'] : getenv('SERVER_NAME'));
        $server_port = (!empty($_SERVER['SERVER_PORT'])) ? (int) $_SERVER['SERVER_PORT'] : (int) getenv('SERVER_PORT');
        $secure = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 1 : 0;

        $url = (($secure) ? 'https://' : 'http://') . $server_name;

        if ($server_port && (($secure && $server_port <> 443) || (!$secure && $server_port <> 80)))
        {
            // HTTP HOST can carry a port number...
            if (strpos($server_name, ':') === false)
            {
                $url .= ':' . $server_port;
            }
        }
        return $url;
      }
    }

    /**
     * Get a web file (HTML, XHTML, XML, image, etc.) from a URL.  Return an
     * array containing the HTTP server response header fields and content.
     */
    function getWebPage( $url ){

        //Xiping Wang
        //fix 10, descrease the timeout value(CURLOPT_CONNECTTIMEOUT|CURLOPT_TIMEOUT) from 120 to 60
        //set up options for the http call
        $options = array( CURLOPT_RETURNTRANSFER => true,     // return web page
            CURLOPT_HEADER         => false,    // don't return headers
            CURLOPT_FOLLOWLOCATION => true,     // follow redirects
            CURLOPT_ENCODING       => "",       // handle all encodings
            CURLOPT_USERAGENT      => "spider", // who am i
            CURLOPT_AUTOREFERER    => true,     // set referer on redirect
            CURLOPT_CONNECTTIMEOUT => 60,      // timeout on connect
            CURLOPT_TIMEOUT        => 60,      // timeout on response
            CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
        );

        //initiate and send post
        $ch      = curl_init( $url );
        curl_setopt_array( $ch, $options );
        $content = curl_exec( $ch );
        $err     = curl_errno( $ch );
        $errmsg  = curl_error( $ch );
        $header  = curl_getinfo( $ch );
        curl_close( $ch );

        //prepare content
        $header['errno']   = $err;
        $header['errmsg']  = $errmsg;

        if(trim($content)!=='')
            $header['content'] = $content;
        else
            $header['content'] = '<api></api>';
        return $header;
    }

    function splitHjmsChars($xstr, $xlenint, $xlaststr) {
        $texttoshow = chunk_split($xstr,$xlenint,"\r\n");
        $texttoshow  = preg_split('/\r\n/',$texttoshow);
        $texttoshow = trim($texttoshow[0].$xlaststr);

        //confirm there is not open tag "<", if so , we should end it with ">"
        if(strripos($texttoshow,"<")> strripos($texttoshow,">"))
            $texttoshow .= "\"\">";

       //confirm there is not open tag "<", if so , we should end it with ">" 
        if(strripos($texttoshow,"<")> strripos($texttoshow,">"))
            $texttoshow .= "\"\">";

        if (strlen($xstr)>$xlenint){ 
            $texttoshow .= "...";
        }    
        
        return $texttoshow;
    }
    
    /**
     * 
     * @param $url the wiki text from other wiki site
     * @return html segment
     */
    function loadWikiMainPage($title,$length=200){
        //$url is from 

            $url =  getHostName().OMWIKI_SCRIPT_PATH."/api.php?action=parse&text={{:$title}}";
        $url .= '&format=xml';
        $wgResponse = getWebPage($url);

        //initialize data
        $doc = new DOMDocument();
        $doc->preserveWhiteSpace = FALSE;

        $content = '';

        try {
            //load api content
            $doc->loadXML(trim($wgResponse['content']));
            //please check
            $content = $doc->getElementsByTagName("text")->item(0)->nodeValue;
            //generate result
            
            //remove HTML comment
            $content = preg_replace('/<!--\s*NewPP limit report[^>]*-->\s*$/siu', '', $content); 
        } catch (Exception $e) {
            error_log( "Exception caught");
            error_log($e->getMessage());
        }

        //result was cut into the assigned length
        return splitHjmsChars($content,$length,' ');
    }
    
    /**
         * Replace message parameter keys on the given formatted output.
         *
         * @param string $message
         * @param array $args
         * @return string
         * @private
         */
        function msgReplaceArgs( $message, $args ) {
                # Fix windows line-endings
                # Some messages are split with explode("\n", $msg)
                $message = str_replace( "\r", '', $message );
        
                // Replace arguments
                if ( count( $args ) ) {
                        if ( is_array( $args[0] ) ) {
                                $args = array_values( $args[0] );
                        }
                        $replacementKeys = array();
                        foreach( $args as $n => $param ) {
                                $replacementKeys['$' . ($n + 1)] = $param;
                        }
                        $message = strtr( $message, $replacementKeys );
                }
        
                return $message;
        }


?>