Fixed: FS#1619 - Add apache SNI / SAN support for SSL.

tbrehm

2011-09-26 b31bb1f27f066a2d49f5ab9ee0ca15e985efc788

 server/plugins-available/apache2_plugin.inc.php

@@ -75,11 +75,30 @@
      $app->plugins->registerEvent('webdav_user_insert',$this->plugin_name,'webdav');
      $app->plugins->registerEvent('webdav_user_update',$this->plugin_name,'webdav');
      $app->plugins->registerEvent('webdav_user_delete',$this->plugin_name,'webdav');
		
      $app->plugins->registerEvent('client_delete',$this->plugin_name,'client_delete');
		
      $app->plugins->registerEvent('web_folder_user_insert',$this->plugin_name,'web_folder_user');
      $app->plugins->registerEvent('web_folder_user_update',$this->plugin_name,'web_folder_user');
      $app->plugins->registerEvent('web_folder_user_delete',$this->plugin_name,'web_folder_user');
		
      $app->plugins->registerEvent('web_folder_update',$this->plugin_name,'web_folder_update');
      $app->plugins->registerEvent('web_folder_delete',$this->plugin_name,'web_folder_delete');
		
   }

   // Handle the creation of SSL certificates
   function ssl($event_name,$data) {
      global $app, $conf;

      // load the server configuration options
      $app->uses('getconf');
      $web_config = $app->getconf->get_server_config($conf['server_id'], 'web');
      if ($web_config['CA_path']!='' && !file_exists($web_config['CA_path'].'/openssl.cnf'))
         $app->log("CA path error, file does not exist:".$web_config['CA_path'].'/openssl.conf',LOGLEVEL_ERROR);	
		
      //* Only vhosts can have a ssl cert
      if($data["new"]["type"] != "vhost") return;

      if(!is_dir($data['new']['document_root'].'/ssl')) exec('mkdir -p '.$data['new']['document_root'].'/ssl');
      $ssl_dir = $data['new']['document_root'].'/ssl';
@@ -137,8 +156,22 @@
         $crt_file = escapeshellcmd($crt_file);

         if(is_file($ssl_cnf_file)) {
            exec("openssl genrsa -des3 -rand $rand_file -passout pass:$ssl_password -out $key_file 2048 && openssl req -new -passin pass:$ssl_password -passout pass:$ssl_password -key $key_file -out $csr_file -days $ssl_days -config $config_file && openssl req -x509 -passin pass:$ssl_password -passout pass:$ssl_password -key $key_file -in $csr_file -out $crt_file -days $ssl_days -config $config_file && openssl rsa -passin pass:$ssl_password -in $key_file -out $key_file2");
            $app->log('Creating SSL Cert for: '.$domain,LOGLEVEL_DEBUG);
				
            exec("openssl genrsa -des3 -rand $rand_file -passout pass:$ssl_password -out $key_file 2048");
            exec("openssl req -new -passin pass:$ssl_password -passout pass:$ssl_password -key $key_file -out $csr_file -days $ssl_days -config $config_file");
            exec("openssl rsa -passin pass:$ssl_password -in $key_file -out $key_file2");

            if(file_exists($web_config['CA_path'].'/openssl.cnf'))
            {
               exec("openssl ca -batch -out $crt_file -config ".$web_config['CA_path']."/openssl.cnf -passin pass:".$web_config['CA_pass']." -in $csr_file");
               $app->log("Creating CA-signed SSL Cert for: $domain",LOGLEVEL_DEBUG);
               if (filesize($crt_file)==0 || !file_exists($crt_file)) $app->log("CA-Certificate signing failed.  openssl ca -out $crt_file -config ".$web_config['CA_path']."/openssl.cnf -passin pass:".$web_config['CA_pass']." -in $csr_file",LOGLEVEL_ERROR);
            };
            if (filesize($crt_file)==0 || !file_exists($crt_file)){
               exec("openssl req -x509 -passin pass:$ssl_password -passout pass:$ssl_password -key $key_file -in $csr_file -out $crt_file -days $ssl_days -config $config_file ");
               $app->log("Creating self-signed SSL Cert for: $domain",LOGLEVEL_DEBUG);
            };
			
         }

         exec('chmod 400 '.$key_file2);
@@ -155,15 +188,15 @@
      }

      //* Save a SSL certificate to disk
      if($data['new']['ssl_action'] == 'save') {
         $ssl_dir = $data['new']['document_root'].'/ssl';
         $domain = $data['new']['ssl_domain'];
         $csr_file = $ssl_dir.'/'.$domain.'.csr';
         $crt_file = $ssl_dir.'/'.$domain.'.crt';
         $bundle_file = $ssl_dir.'/'.$domain.'.bundle';
         file_put_contents($csr_file,$data['new']['ssl_request']);
         file_put_contents($crt_file,$data['new']['ssl_cert']);
         if(trim($data['new']['ssl_bundle']) != '') file_put_contents($bundle_file,$data['new']['ssl_bundle']);
      if($data["new"]["ssl_action"] == 'save') {
         $ssl_dir = $data["new"]["document_root"]."/ssl";
         $domain = $data["new"]["ssl_domain"];
         $csr_file = $ssl_dir.'/'.$domain.".csr";
         $crt_file = $ssl_dir.'/'.$domain.".crt";
         $bundle_file = $ssl_dir.'/'.$domain.".bundle";
         if(trim($data["new"]["ssl_request"]) != '') file_put_contents($csr_file,$data["new"]["ssl_request"]);
         if(trim($data["new"]["ssl_cert"]) != '') file_put_contents($crt_file,$data["new"]["ssl_cert"]);
         if(trim($data["new"]["ssl_bundle"]) != '') file_put_contents($bundle_file,$data["new"]["ssl_bundle"]);
         /* Update the DB of the (local) Server */
         $app->db->query("UPDATE web_domain SET ssl_action = '' WHERE domain = '".$data['new']['domain']."'");
         /* Update also the master-DB of the Server-Farm */
@@ -178,6 +211,11 @@
         $csr_file = $ssl_dir.'/'.$domain.'.csr';
         $crt_file = $ssl_dir.'/'.$domain.'.crt';
         $bundle_file = $ssl_dir.'/'.$domain.'.bundle';
         if(file_exists($web_config['CA_path'].'/openssl.cnf'))
            {
               exec("openssl ca -batch -config ".$web_config['CA_path']."/openssl.cnf -passin pass:".$web_config['CA_pass']." -revoke $crt_file");
               $app->log("Revoking CA-signed SSL Cert for: $domain",LOGLEVEL_DEBUG);
            };
         unlink($csr_file);
         unlink($crt_file);
         unlink($bundle_file);
@@ -215,7 +253,7 @@
         $old_parent_domain_id = intval($data['old']['parent_domain_id']);
         $new_parent_domain_id = intval($data['new']['parent_domain_id']);

         // If the parent_domain_id has been chenged, we will have to update the old site as well.
         // If the parent_domain_id has been changed, we will have to update the old site as well.
         if($this->action == 'update' && $data['new']['parent_domain_id'] != $data['old']['parent_domain_id']) {
            $tmp = $app->db->queryOneRecord('SELECT * FROM web_domain WHERE domain_id = '.$old_parent_domain_id." AND active = 'y'");
            $data['new'] = $tmp;
@@ -250,6 +288,23 @@
      if($data['new']['system_user'] == 'root' or $data['new']['system_group'] == 'root') {
         $app->log('Websites cannot be owned by the root user or group.',LOGLEVEL_WARN);
         return 0;
      }
		
      // Create group and user, if not exist
      $app->uses('system');

      $groupname = escapeshellcmd($data['new']['system_group']);
      if($data['new']['system_group'] != '' && !$app->system->is_group($data['new']['system_group'])) {
         exec('groupadd '.$groupname);
         if($apache_chrooted) $this->_exec('chroot '.escapeshellcmd($web_config['website_basedir']).' groupadd '.$groupname);
         $app->log('Adding the group: '.$groupname,LOGLEVEL_DEBUG);
      }

      $username = escapeshellcmd($data['new']['system_user']);
      if($data['new']['system_user'] != '' && !$app->system->is_user($data['new']['system_user'])) {
         exec('useradd -d '.escapeshellcmd($data['new']['document_root'])." -g $groupname -G sshusers $username -s /bin/false");
         if($apache_chrooted) $this->_exec('chroot '.escapeshellcmd($web_config['website_basedir']).' useradd -d '.escapeshellcmd($data['new']['document_root'])." -g $groupname -G sshusers $username -s /bin/false");
         $app->log('Adding the user: '.$username,LOGLEVEL_DEBUG);
      }

      //* If the client of the site has been changed, we have a change of the document root
@@ -290,6 +345,9 @@
         exec('mv '.$data['old']['document_root'].' '.$new_dir);
         $app->log('Moving site to new document root: mv '.$data['old']['document_root'].' '.$new_dir,LOGLEVEL_DEBUG);

         // Handle the change in php_open_basedir
         $data['new']['php_open_basedir'] = str_replace($data['old']['document_root'],$data['new']['document_root'],$data['old']['php_open_basedir']);

         //* Change the owner of the website files to the new website owner
         exec('chown --recursive --from='.escapeshellcmd($data['old']['system_user']).':'.escapeshellcmd($data['old']['system_group']).' '.escapeshellcmd($data['new']['system_user']).':'.escapeshellcmd($data['new']['system_group']).' '.$new_dir);

@@ -324,7 +382,13 @@
      // Create the symlink for the logfiles
      if(!is_dir('/var/log/ispconfig/httpd/'.$data['new']['domain'])) exec('mkdir -p /var/log/ispconfig/httpd/'.$data['new']['domain']);
      if(!is_link($data['new']['document_root'].'/log')) {
         exec('ln -s /var/log/ispconfig/httpd/'.$data['new']['domain'].' '.$data['new']['document_root'].'/log');
//         exec("ln -s /var/log/ispconfig/httpd/".$data["new"]["domain"]." ".$data["new"]["document_root"]."/log");
         if ($web_config["website_symlinks_rel"] == 'y') {
            $this->create_relative_link("/var/log/ispconfig/httpd/".$data["new"]["domain"], $data["new"]["document_root"]."/log");
         } else {
            exec("ln -s /var/log/ispconfig/httpd/".$data["new"]["domain"]." ".$data["new"]["document_root"]."/log");
         }

         $app->log('Creating symlink: ln -s /var/log/ispconfig/httpd/'.$data['new']['domain'].' '.$data['new']['document_root'].'/log',LOGLEVEL_DEBUG);
      }
      /*
@@ -380,44 +444,67 @@
            }
            // create the symlinks, if not exist
            if(!is_link($tmp_symlink)) {
               exec('ln -s '.escapeshellcmd($data['new']['document_root']).'/ '.escapeshellcmd($tmp_symlink));
//               exec("ln -s ".escapeshellcmd($data["new"]["document_root"])."/ ".escapeshellcmd($tmp_symlink));
               if ($web_config["website_symlinks_rel"] == 'y') {
                  $this->create_relative_link(escapeshellcmd($data["new"]["document_root"]), escapeshellcmd($tmp_symlink));
               } else {
                  exec("ln -s ".escapeshellcmd($data["new"]["document_root"])."/ ".escapeshellcmd($tmp_symlink));
               }

               $app->log('Creating symlink: ln -s '.$data['new']['document_root'].'/ '.$tmp_symlink,LOGLEVEL_DEBUG);
            }
         }
      }



        // Install the Standard or Custom Error, Index and other related files
        // /usr/local/ispconfig/server/conf is for the standard files
        // /usr/local/ispconfig/server/conf-custom is for the custom files
        // setting a local var here
           
        // normally $conf['templates'] = "/usr/local/ispconfig/server/conf";

      if($this->action == 'insert' && $data['new']['type'] == 'vhost') {
         // Copy the error pages
         if($data['new']['errordocs']) {
            $error_page_path = escapeshellcmd($data['new']['document_root']).'/web/error/';
            if (file_exists('/usr/local/ispconfig/server/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2))) {
               exec('cp /usr/local/ispconfig/server/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
            if (file_exists($conf['rootpath'] . '/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2))) {
               exec('cp ' . $conf['rootpath'] . '/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
            }
            else {
               if (file_exists('/usr/local/ispconfig/server/conf-custom/error/400.html')) {
                  exec('cp /usr/local/ispconfig/server/conf-custom/error/*.html '.$error_page_path);
               if (file_exists($conf['rootpath'] . '/conf-custom/error/400.html')) {
                  exec('cp '. $conf['rootpath'] . '/conf-custom/error/*.html '.$error_page_path);
               }
               else {
                  exec('cp /usr/local/ispconfig/server/conf/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
                  exec('cp ' . $conf['rootpath'] . '/conf/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
               }
            }
            exec('chmod -R a+r '.$error_page_path);
         }

         // copy the standard index page
         if (file_exists('/usr/local/ispconfig/server/conf-custom/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2))) {
            exec('cp /usr/local/ispconfig/server/conf-custom/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2).' '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
         }
         if (file_exists($conf['rootpath'] . '/conf-custom/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2))) {
            exec('cp ' . $conf['rootpath'] . '/conf-custom/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2).' '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
            
         if(is_file($conf['rootpath'] . '/conf-custom/index/favicon.ico')) {
                exec('cp ' . $conf['rootpath'] . '/conf-custom/index/favicon.ico '.escapeshellcmd($data['new']['document_root']).'/web/');
            }
         if(is_file($conf['rootpath'] . '/conf-custom/index/robots.txt')) {
                exec('cp ' . $conf['rootpath'] . '/conf-custom/index/robots.txt '.escapeshellcmd($data['new']['document_root']).'/web/');
                }
                if(is_file($conf['rootpath'] . '/conf-custom/index/.htaccess')) {
                    exec('cp ' . $conf['rootpath'] . '/conf-custom/index/.htaccess '.escapeshellcmd($data['new']['document_root']).'/web/');
                }
            }
         else {
            if (file_exists('/usr/local/ispconfig/server/conf-custom/index/standard_index.html')) {
               exec('cp /usr/local/ispconfig/server/conf-custom/index/standard_index.html '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
            if (file_exists($conf['rootpath'] . '/conf-custom/index/standard_index.html')) {
               exec('cp ' . $conf['rootpath'] . '/conf-custom/index/standard_index.html '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
            }
            else {
               exec('cp /usr/local/ispconfig/server/conf/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2).' '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
               if(is_file('/usr/local/ispconfig/server/conf/index/favicon.ico')) exec('cp /usr/local/ispconfig/server/conf/index/favicon.ico '.escapeshellcmd($data['new']['document_root']).'/web/');
               if(is_file('/usr/local/ispconfig/server/conf/index/robots.txt')) exec('cp /usr/local/ispconfig/server/conf/index/robots.txt '.escapeshellcmd($data['new']['document_root']).'/web/');
               if(is_file('/usr/local/ispconfig/server/conf/index/.htaccess')) exec('cp /usr/local/ispconfig/server/conf/index/.htaccess '.escapeshellcmd($data['new']['document_root']).'/web/');
               exec('cp ' . $conf['rootpath'] . '/conf/index/standard_index.html_'.substr(escapeshellcmd($conf['language']),0,2).' '.escapeshellcmd($data['new']['document_root']).'/web/index.html');
               if(is_file($conf['rootpath'] . '/conf/index/favicon.ico')) exec('cp ' . $conf['rootpath'] . '/conf/index/favicon.ico '.escapeshellcmd($data['new']['document_root']).'/web/');
               if(is_file($conf['rootpath'] . '/conf/index/robots.txt')) exec('cp ' . $conf['rootpath'] . '/conf/index/robots.txt '.escapeshellcmd($data['new']['document_root']).'/web/');
               if(is_file($conf['rootpath'] . '/conf/index/.htaccess')) exec('cp ' . $conf['rootpath'] . '/conf/index/.htaccess '.escapeshellcmd($data['new']['document_root']).'/web/');
            }
         }
         exec('chmod -R a+r '.escapeshellcmd($data['new']['document_root']).'/web/');
@@ -426,36 +513,20 @@
      } elseif ($this->action == 'update' && $data['new']['type'] == 'vhost' && $data['old']['errordocs'] == 0 && $data['new']['errordocs'] == 1) {

         $error_page_path = escapeshellcmd($data['new']['document_root']).'/web/error/';
         if (file_exists('/usr/local/ispconfig/server/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2))) {
            exec('cp /usr/local/ispconfig/server/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
         if (file_exists($conf['rootpath'] . '/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2))) {
            exec('cp ' . $conf['rootpath'] . '/conf-custom/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
         }
         else {
            if (file_exists('/usr/local/ispconfig/server/conf-custom/error/400.html')) {
               exec('cp /usr/local/ispconfig/server/conf-custom/error/*.html '.$error_page_path);
            if (file_exists($conf['rootpath'] . '/conf-custom/error/400.html')) {
               exec('cp ' . $conf['rootpath'] . '/conf-custom/error/*.html '.$error_page_path);
            }
            else {
               exec('cp /usr/local/ispconfig/server/conf/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
               exec('cp ' . $conf['rootpath'] . '/conf/error/'.substr(escapeshellcmd($conf['language']),0,2).'/* '.$error_page_path);
            }
         }
         exec('chmod -R a+r '.$error_page_path);
         exec('chown -R '.$data['new']['system_user'].':'.$data['new']['system_group'].' '.$error_page_path);
      }  // end copy error docs

      // Create group and user, if not exist
      $app->uses('system');

      $groupname = escapeshellcmd($data['new']['system_group']);
      if($data['new']['system_group'] != '' && !$app->system->is_group($data['new']['system_group'])) {
         exec('groupadd '.$groupname);
         if($apache_chrooted) $this->_exec('chroot '.escapeshellcmd($web_config['website_basedir']).' groupadd '.$groupname);
         $app->log('Adding the group: '.$groupname,LOGLEVEL_DEBUG);
      }

      $username = escapeshellcmd($data['new']['system_user']);
      if($data['new']['system_user'] != '' && !$app->system->is_user($data['new']['system_user'])) {
         exec('useradd -d '.escapeshellcmd($data['new']['document_root'])." -g $groupname -G sshusers $username -s /bin/false");
         if($apache_chrooted) $this->_exec('chroot '.escapeshellcmd($web_config['website_basedir']).' useradd -d '.escapeshellcmd($data['new']['document_root'])." -g $groupname -G sshusers $username -s /bin/false");
         $app->log('Adding the user: '.$username,LOGLEVEL_DEBUG);
      }

      // Set the quota for the user
      if($username != '' && $app->system->is_user($username)) {
@@ -469,7 +540,7 @@
         exec('setquota -T -u '.$username.' 604800 604800 -a &> /dev/null');
      }

      if($this->action == 'insert') {
      if($this->action == 'insert' || $data["new"]["system_user"] != $data["old"]["system_user"]) {
         // Chown and chmod the directories below the document root
         $this->_exec('chown -R '.$username.':'.$groupname.' '.escapeshellcmd($data['new']['document_root']));
         // The document root itself has to be owned by root in normal level and by the web owner in security level 20
@@ -491,6 +562,9 @@

         // make tmp directory writable for Apache and the website users
         $this->_exec('chmod 777 '.escapeshellcmd($data['new']['document_root'].'/tmp'));
			
         // Set Log symlink to 755 to make the logs accessible by the FTP user
         $this->_exec("chmod 755 ".escapeshellcmd($data["new"]["document_root"])."/log");

         $command = 'usermod';
         $command .= ' --groups sshusers';
@@ -553,7 +627,11 @@
         if($data['new']['php'] == 'mod') {
            $master_php_ini_path = $web_config['php_ini_path_apache'];
         } else {
            $master_php_ini_path = $web_config['php_ini_path_cgi'];
            if($data["new"]['php'] == 'fast-cgi' && file_exists($fastcgi_config["fastcgi_phpini_path"])) {
               $master_php_ini_path = $fastcgi_config["fastcgi_phpini_path"];
            } else {
               $master_php_ini_path = $web_config['php_ini_path_cgi'];
            }
         }
         if($master_php_ini_path != '' && substr($master_php_ini_path,-7) == 'php.ini' && is_file($master_php_ini_path)) {
            $php_ini_content .= file_get_contents($master_php_ini_path)."\n";
@@ -573,6 +651,7 @@
      $tpl->newTemplate('vhost.conf.master');

      $vhost_data = $data['new'];
      //unset($vhost_data['ip_address']);
      $vhost_data['web_document_root'] = $data['new']['document_root'].'/web';
      $vhost_data['web_document_root_www'] = $web_config['website_basedir'].'/'.$data['new']['domain'].'/web';
      $vhost_data['web_basedir'] = $web_config['website_basedir'];
@@ -590,45 +669,76 @@
      $crt_file = $ssl_dir.'/'.$domain.'.crt';
      $bundle_file = $ssl_dir.'/'.$domain.'.bundle';

      if($data['new']['ssl'] == 'y' && @is_file($crt_file) && @is_file($key_file)) {
      /*
      if($domain!='' && $data['new']['ssl'] == 'y' && @is_file($crt_file) && @is_file($key_file) && (@filesize($crt_file)>0)  && (@filesize($key_file)>0)) {
         $vhost_data['ssl_enabled'] = 1;
         $app->log('Enable SSL for: '.$domain,LOGLEVEL_DEBUG);
      } else {
         $vhost_data['ssl_enabled'] = 0;
         $app->log('Disable SSL for: '.$domain,LOGLEVEL_DEBUG);
         $app->log('SSL Disabled. '.$domain,LOGLEVEL_DEBUG);
      }
      */

      if(@is_file($bundle_file)) $vhost_data['has_bundle_cert'] = 1;

      //$vhost_data['document_root'] = $data['new']['document_root'].'/web';
		
      // Set SEO Redirect
      if($data['new']['seo_redirect'] != '' && ($data['new']['subdomain'] == 'www' || $data['new']['subdomain'] == '*')){
         $vhost_data['seo_redirect_enabled'] = 1;
         if($data['new']['seo_redirect'] == 'non_www_to_www'){
            $vhost_data['seo_redirect_origin_domain'] = $data['new']['domain'];
            $vhost_data['seo_redirect_target_domain'] = 'www.'.$data['new']['domain'];
         }
         if($data['new']['seo_redirect'] == 'www_to_non_www'){
            $vhost_data['seo_redirect_origin_domain'] = 'www.'.$data['new']['domain'];
            $vhost_data['seo_redirect_target_domain'] = $data['new']['domain'];
         }
      } else {
         $vhost_data['seo_redirect_enabled'] = 0;
      }
		
      $tpl->setVar($vhost_data);

      // Rewrite rules
      $rewrite_rules = array();
      if($data['new']['redirect_type'] != '') {
         if(substr($data['new']['redirect_path'],-1) != '/') $data['new']['redirect_path'] .= '/';
         if(substr($data['new']['redirect_path'],0,8) == '[scheme]'){
            $rewrite_target = 'http'.substr($data['new']['redirect_path'],8);
            $rewrite_target_ssl = 'https'.substr($data['new']['redirect_path'],8);
         } else {
            $rewrite_target = $data['new']['redirect_path'];
            $rewrite_target_ssl = $data['new']['redirect_path'];
         }
         /* Disabled path extension
         if($data['new']['redirect_type'] == 'no' && substr($data['new']['redirect_path'],0,4) != 'http') {
            $data['new']['redirect_path'] = $data['new']['document_root'].'/web'.realpath($data['new']['redirect_path']).'/';
         }
         */

         $rewrite_rules[] = array(   'rewrite_domain'    => $data['new']['domain'],
               'rewrite_type'       => ($data['new']['redirect_type'] == 'no')?'':'['.$data['new']['redirect_type'].']',
               'rewrite_target'    => $data['new']['redirect_path']);

         switch($data['new']['subdomain']) {
            case 'www':
               $rewrite_rules[] = array(   'rewrite_domain'    => 'www.'.$data['new']['domain'],
               $rewrite_rules[] = array(   'rewrite_domain'    => '^'.$data['new']['domain'],
                  'rewrite_type'       => ($data['new']['redirect_type'] == 'no')?'':'['.$data['new']['redirect_type'].']',
                  'rewrite_target'    => $rewrite_target,
                  'rewrite_target_ssl' => $rewrite_target_ssl);
               $rewrite_rules[] = array(   'rewrite_domain'    => '^www.'.$data['new']['domain'],
                     'rewrite_type'       => ($data['new']['redirect_type'] == 'no')?'':'['.$data['new']['redirect_type'].']',
                     'rewrite_target'    => $data['new']['redirect_path']);
                     'rewrite_target'    => $rewrite_target,
                     'rewrite_target_ssl' => $rewrite_target_ssl);
               break;
            case '*':
            // TODO
            //$rewrite_rules[] = array(   'rewrite_domain'    => '*'.$alias['domain'],
            //                     'rewrite_type'       => $alias['redirect_type'],
            //                     'rewrite_target'    => $alias['redirect_path']);
               $rewrite_rules[] = array(   'rewrite_domain'    => $data['new']['domain'],
                  'rewrite_type'       => ($data['new']['redirect_type'] == 'no')?'':'['.$data['new']['redirect_type'].']',
                  'rewrite_target'    => $rewrite_target,
                  'rewrite_target_ssl' => $rewrite_target_ssl);
               break;
            default:
               $rewrite_rules[] = array(   'rewrite_domain'    => '^'.$data['new']['domain'],
                  'rewrite_type'       => ($data['new']['redirect_type'] == 'no')?'':'['.$data['new']['redirect_type'].']',
                  'rewrite_target'    => $rewrite_target,
                  'rewrite_target_ssl' => $rewrite_target_ssl);
         }
      }

@@ -659,27 +769,42 @@
            $app->log('Add server alias: '.$alias['domain'],LOGLEVEL_DEBUG);
            // Rewriting
            if($alias['redirect_type'] != '') {
               if(substr($data['new']['redirect_path'],-1) != '/') $data['new']['redirect_path'] .= '/';
               if(substr($alias['redirect_path'],-1) != '/') $alias['redirect_path'] .= '/';
               if(substr($alias['redirect_path'],0,8) == '[scheme]'){
                  $rewrite_target = 'http'.substr($alias['redirect_path'],8);
                  $rewrite_target_ssl = 'https'.substr($alias['redirect_path'],8);
               } else {
                  $rewrite_target = $alias['redirect_path'];
                  $rewrite_target_ssl = $alias['redirect_path'];
               }
               /* Disabled the path extension
               if($data['new']['redirect_type'] == 'no' && substr($data['new']['redirect_path'],0,4) != 'http') {
                  $data['new']['redirect_path'] = $data['new']['document_root'].'/web'.realpath($data['new']['redirect_path']).'/';
               }
               */
               $rewrite_rules[] = array(   'rewrite_domain'    => $alias['domain'],
                     'rewrite_type'       => ($alias['redirect_type'] == 'no')?'':'['.$alias['redirect_type'].']',
                     'rewrite_target'    => $alias['redirect_path']);
					
               switch($alias['subdomain']) {
                  case 'www':
                     $rewrite_rules[] = array(   'rewrite_domain'    => 'www.'.$alias['domain'],
                     $rewrite_rules[] = array(   'rewrite_domain'    => '^'.$alias['domain'],
                        'rewrite_type'       => ($alias['redirect_type'] == 'no')?'':'['.$alias['redirect_type'].']',
                        'rewrite_target'    => $rewrite_target,
                        'rewrite_target_ssl' => $rewrite_target_ssl);
                     $rewrite_rules[] = array(   'rewrite_domain'    => '^www.'.$alias['domain'],
                           'rewrite_type'       => ($alias['redirect_type'] == 'no')?'':'['.$alias['redirect_type'].']',
                           'rewrite_target'    => $alias['redirect_path']);
                           'rewrite_target'    => $rewrite_target,
                           'rewrite_target_ssl' => $rewrite_target_ssl);
                     break;
                  case '*':
                  // TODO
                  //$rewrite_rules[] = array(   'rewrite_domain'    => '*'.$alias['domain'],
                  //                     'rewrite_type'       => $alias['redirect_type'],
                  //                     'rewrite_target'    => $alias['redirect_path']);
                     $rewrite_rules[] = array(   'rewrite_domain'    => $alias['domain'],
                        'rewrite_type'       => ($alias['redirect_type'] == 'no')?'':'['.$alias['redirect_type'].']',
                        'rewrite_target'    => $rewrite_target,
                        'rewrite_target_ssl' => $rewrite_target_ssl);
                     break;
                  default:
                     $rewrite_rules[] = array(   'rewrite_domain'    => '^'.$alias['domain'],
                        'rewrite_type'       => ($alias['redirect_type'] == 'no')?'':'['.$alias['redirect_type'].']',
                        'rewrite_target'    => $rewrite_target,
                        'rewrite_target_ssl' => $rewrite_target_ssl);
               }
            }
         }
@@ -762,6 +887,7 @@
         $tpl->setVar('fastcgi_alias',$fastcgi_config['fastcgi_alias']);
         $tpl->setVar('fastcgi_starter_path',$fastcgi_starter_path);
         $tpl->setVar('fastcgi_starter_script',$fastcgi_config['fastcgi_starter_script']);
         $tpl->setVar('fastcgi_config_syntax',$fastcgi_config['fastcgi_config_syntax']);

      }

@@ -826,7 +952,33 @@

      $vhost_file = escapeshellcmd($web_config['vhost_conf_dir'].'/'.$data['new']['domain'].'.vhost');
      //* Make a backup copy of vhost file
      copy($vhost_file,$vhost_file.'~');
      if(file_exists($vhost_file)) copy($vhost_file,$vhost_file.'~');
		
      //* create empty vhost array
      $vhosts = array();
		
      //* Add vhost for ipv4 IP
      $vhosts[] = array('ip_address' => $data['new']['ip_address'], 'ssl_enabled' => 0, 'port' => 80 );
		
      //* Add vhost for ipv4 IP with SSL
      if($data['new']['ssl_domain'] != '' && $data['new']['ssl'] == 'y' && @is_file($crt_file) && @is_file($key_file) && (@filesize($crt_file)>0)  && (@filesize($key_file)>0)) {
         $vhosts[] = array('ip_address' => $data['new']['ip_address'], 'ssl_enabled' => 1, 'port' => '443' );
         $app->log('Enable SSL for: '.$domain,LOGLEVEL_DEBUG);
      }
		
      //* Add vhost for IPv6 IP
      if($data['new']['ipv6_address'] != '') {
         $vhosts[] = array('ip_address' => '['.$data['new']['ipv6_address'].']', 'ssl_enabled' => 0, 'port' => 80 );
		
         //* Add vhost for ipv6 IP with SSL
         if($data['new']['ssl_domain'] != '' && $data['new']['ssl'] == 'y' && @is_file($crt_file) && @is_file($key_file) && (@filesize($crt_file)>0)  && (@filesize($key_file)>0)) {
            $vhosts[] = array('ip_address' => '['.$data['new']['ipv6_address'].']', 'ssl_enabled' => 1, 'port' => '443' );
            $app->log('Enable SSL for IPv6: '.$domain,LOGLEVEL_DEBUG);
         }
      }
		
      //* Set the vhost loop
      $tpl->setLoop('vhosts',$vhosts);
      
      //* Write vhost file
      file_put_contents($vhost_file,$tpl->grab());
@@ -838,24 +990,48 @@
      */
      $this->_patchVhostWebdav($vhost_file, $data['new']['document_root'] . '/webdav');

      // Set the symlink to enable the vhost
      //* Set the symlink to enable the vhost
      //* First we check if there is a old type of symlink and remove it
      $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/'.$data['new']['domain'].'.vhost');
      if(is_link($vhost_symlink)) unlink($vhost_symlink);
		
      //* Remove old or changed symlinks
      if($data['new']['subdomain'] != $data['old']['subdomain'] or $data['new']['active'] == 'n') {
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/900-'.$data['new']['domain'].'.vhost');
         if(is_link($vhost_symlink)) {
            unlink($vhost_symlink);
            $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
         }
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/100-'.$data['new']['domain'].'.vhost');
         if(is_link($vhost_symlink)) {
            unlink($vhost_symlink);
            $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
         }
      }
		
      //* New symlink
      if($data['new']['subdomain'] == '*') {
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/900-'.$data['new']['domain'].'.vhost');
      } else {
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/100-'.$data['new']['domain'].'.vhost');
      }
      if($data['new']['active'] == 'y' && !is_link($vhost_symlink)) {
         symlink($vhost_file,$vhost_symlink);
         $app->log('Creating symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
      }

      // Remove the symlink, if site is inactive
      if($data['new']['active'] == 'n' && is_link($vhost_symlink)) {
         unlink($vhost_symlink);
         $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
      }

      // remove old symlink and vhost file, if domain name of the site has changed
      if($this->action == 'update' && $data['old']['domain'] != '' && $data['new']['domain'] != $data['old']['domain']) {
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/'.$data['old']['domain'].'.vhost');
         unlink($vhost_symlink);
         $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/900-'.$data['old']['domain'].'.vhost');
         if(is_link($vhost_symlink)) {
            unlink($vhost_symlink);
            $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
         }
         $vhost_symlink = escapeshellcmd($web_config['vhost_conf_enabled_dir'].'/100-'.$data['old']['domain'].'.vhost');
         if(is_link($vhost_symlink)) {
            unlink($vhost_symlink);
            $app->log('Removing symlink: '.$vhost_symlink.'->'.$vhost_file,LOGLEVEL_DEBUG);
         }
         $vhost_file = escapeshellcmd($web_config['vhost_conf_dir'].'/'.$data['old']['domain'].'.vhost');
         unlink($vhost_file);
         $app->log('Removing file: '.$vhost_file,LOGLEVEL_DEBUG);
@@ -890,6 +1066,9 @@
         $app->log('Apache status is: '.$apache_online_status_before_restart,LOGLEVEL_DEBUG);

         $app->services->restartService('httpd','restart');
			
         // wait a few seconds, before we test the apache status again
         sleep(2);
      
         //* Check if apache restarted successfully if it was online before
         $apache_online_status_after_restart = $this->_checkTcp('localhost',80);
@@ -911,7 +1090,7 @@
      }
      
      // Remove the backup copy of the config file.
      unlink($vhost_file.'~');
      if(@is_file($vhost_file.'~')) unlink($vhost_file.'~');
      

      //* Unset action to clean it for next processed vhost.
@@ -1031,9 +1210,30 @@
      $tpl = new tpl();
      $tpl->newTemplate('apache_ispconfig.conf.master');
      $records = $app->db->queryAllRecords('SELECT * FROM server_ip WHERE server_id = '.$conf['server_id']." AND virtualhost = 'y'");

      if(count($records) > 0) {
         $tpl->setLoop('ip_adresses',$records);
		
      $records_out= array();
      if(is_array($records)) {
         foreach($records as $rec) {
            if($rec['ip_type'] == 'IPv6') {
               $ip_address = '['.$rec['ip_address'].']';
            } else {
               $ip_address = $rec['ip_address'];
            }
            $ports = explode(',',$rec['virtualhost_port']);
            if(is_array($ports)) {
               foreach($ports as $port) {
                  $port = intval($port);
                  if($port > 0 && $port < 65536 && $ip_address != '') {
                     $records_out[] = array('ip_address' => $ip_address, 'port' => $port);
                  }
               }
            }
         }
      }
		
		
      if(count($records_out) > 0) {
         $tpl->setLoop('ip_adresses',$records_out);
      }

      $vhost_file = escapeshellcmd($web_config['vhost_conf_dir'].'/ispconfig.conf');
@@ -1041,6 +1241,186 @@
      $app->log('Writing the conf file: '.$vhost_file,LOGLEVEL_DEBUG);
      unset($tpl);

   }
	
   //* Create or update the .htaccess folder protection
   function web_folder_user($event_name,$data) {
      global $app, $conf;

      $app->uses('system');
		
      if($event_name == 'web_folder_user_delete') {
         $folder_id = $data['old']['web_folder_id'];
      } else {
         $folder_id = $data['new']['web_folder_id'];
      }
		
      $folder = $app->db->queryOneRecord("SELECT * FROM web_folder WHERE web_folder_id = ".intval($folder_id));
      $website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($folder['parent_domain_id']));
		
      if(!is_array($folder) or !is_array($website)) {
         $app->log('Not able to retrieve folder or website record.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Get the folder path.
      if(substr($folder['path'],0,1) == '/') $folder['path'] = substr($folder['path'],1);
      if(substr($folder['path'],-1) == '/') $folder['path'] = substr($folder['path'],0,-1);
      $folder_path = escapeshellcmd($website['document_root'].'/web/'.$folder['path']);
      if(substr($folder_path,-1 != '/')) $folder_path .= '/';
		
      //* Check if the resulting path is inside the docroot
      if(stristr($folder_path,'..') || stristr($folder_path,'./') || stristr($folder_path,'\\')) {
         $app->log('Folder path "'.$folder_path.'" contains .. or ./.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Create the folder path, if it does not exist
      if(!is_dir($folder_path)) exec('mkdir -p '.$folder_path);
		
      //* Create empty .htpasswd file, if it does not exist
      if(!is_file($folder_path.'.htpasswd')) {
         touch($folder_path.'.htpasswd');
         chmod($folder_path.'.htpasswd',0755);
         $app->log('Created file'.$folder_path.'.htpasswd',LOGLEVEL_DEBUG);
      }
		
      if($data['new']['username'] != $data['old']['username'] || $data['new']['active'] == 'n') {
         $app->system->removeLine($folder_path.'.htpasswd',$data['old']['username'].':');
         $app->log('Removed user: '.$data['old']['username'],LOGLEVEL_DEBUG);
      }
		
      //* Add or remove the user from .htpasswd file
      if($event_name == 'web_folder_user_delete') {
         $app->system->removeLine($folder_path.'.htpasswd',$data['old']['username'].':');
         $app->log('Removed user: '.$data['old']['username'],LOGLEVEL_DEBUG);
      } else {
         if($data['new']['active'] == 'y') {
            $app->system->replaceLine($folder_path.'.htpasswd',$data['new']['username'].':',$data['new']['username'].':'.$data['new']['password'],0,1);
            $app->log('Added or updated user: '.$data['new']['username'],LOGLEVEL_DEBUG);
         }
      }
		
      //* Create the .htaccess file
      if(!is_file($folder_path.'.htaccess')) {
         $ht_file = "AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$folder_path.".htpasswd\nrequire valid-user";
         file_put_contents($folder_path.'.htaccess',$ht_file);
         chmod($folder_path.'.htpasswd',0755);
         $app->log('Created file'.$folder_path.'.htaccess',LOGLEVEL_DEBUG);
      }
		
   }
	
   //* Remove .htaccess and .htpasswd file, when folder protection is removed
   function web_folder_delete($event_name,$data) {
      global $app, $conf;
		
      $folder_id = $data['old']['web_folder_id'];
		
      $folder = $app->db->queryOneRecord("SELECT * FROM web_folder WHERE web_folder_id = ".intval($folder_id));
      $website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($folder['parent_domain_id']));
		
      if(!is_array($folder) or !is_array($website)) {
         $app->log('Not able to retrieve folder or website record.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Get the folder path.
      $folder_path = realpath($website['document_root'].'/web/'.$folder['path']);
      if(substr($folder_path,-1 != '/')) $folder_path .= '/';
		
      //* Check if the resulting path is inside the docroot
      if(substr($folder_path,0,strlen($website['document_root'])) != $website['document_root']) {
         $app->log('Folder path is outside of docroot.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Remove .htpasswd file
      if(is_file($folder_path.'.htpasswd')) {
         unlink($folder_path.'.htpasswd');
         $app->log('Removed file'.$folder_path.'.htpasswd',LOGLEVEL_DEBUG);
      }
		
      //* Remove .htaccess file
      if(is_file($folder_path.'.htaccess')) {
         unlink($folder_path.'.htaccess');
         $app->log('Removed file'.$folder_path.'.htaccess',LOGLEVEL_DEBUG);
      }
   }
	
   //* Update folder protection, when path has been changed
   function web_folder_update($event_name,$data) {
      global $app, $conf;
		
      $website = $app->db->queryOneRecord("SELECT * FROM web_domain WHERE domain_id = ".intval($data['new']['parent_domain_id']));
	
      if(!is_array($website)) {
         $app->log('Not able to retrieve folder or website record.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Get the folder path.
      $old_folder_path = realpath($website['document_root'].'/web/'.$data['old']['path']);
      if(substr($old_folder_path,-1 != '/')) $old_folder_path .= '/';
			
      $new_folder_path = escapeshellcmd($website['document_root'].'/web/'.$data['new']['path']);
      if(substr($new_folder_path,-1 != '/')) $new_folder_path .= '/';
		
      //* Check if the resulting path is inside the docroot
      if(stristr($new_folder_path,'..') || stristr($new_folder_path,'./') || stristr($new_folder_path,'\\')) {
         $app->log('Folder path "'.$new_folder_path.'" contains .. or ./.',LOGLEVEL_DEBUG);
         return false;
      }
      if(stristr($old_folder_path,'..') || stristr($old_folder_path,'./') || stristr($old_folder_path,'\\')) {
         $app->log('Folder path "'.$old_folder_path.'" contains .. or ./.',LOGLEVEL_DEBUG);
         return false;
      }
		
      //* Check if the resulting path is inside the docroot
      if(substr($old_folder_path,0,strlen($website['document_root'])) != $website['document_root']) {
         $app->log('Old folder path '.$old_folder_path.' is outside of docroot.',LOGLEVEL_DEBUG);
         return false;
      }
      if(substr($new_folder_path,0,strlen($website['document_root'])) != $website['document_root']) {
         $app->log('New folder path '.$new_folder_path.' is outside of docroot.',LOGLEVEL_DEBUG);
         return false;
      }
			
      //* Create the folder path, if it does not exist
      if(!is_dir($new_folder_path)) exec('mkdir -p '.$new_folder_path);
		
      if($data['old']['path'] != $data['new']['path']) {

		
         //* move .htpasswd file
         if(is_file($old_folder_path.'.htpasswd')) {
            rename($old_folder_path.'.htpasswd',$new_folder_path.'.htpasswd');
            $app->log('Moved file'.$new_folder_path.'.htpasswd',LOGLEVEL_DEBUG);
         }
			
         //* move .htpasswd file
         if(is_file($old_folder_path.'.htaccess')) {
            rename($old_folder_path.'.htaccess',$new_folder_path.'.htaccess');
            $app->log('Moved file'.$new_folder_path.'.htaccess',LOGLEVEL_DEBUG);
         }
		
      }
		
      //* Create the .htaccess file
      if($data['new']['active'] == 'y' && !is_file($new_folder_path.'.htaccess')) {
         $ht_file = "AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$folder_path.".htpasswd\nrequire valid-user";
         file_put_contents($new_folder_path.'.htaccess',$ht_file);
         chmod($new_folder_path.'.htpasswd',0755);
         $app->log('Created file'.$new_folder_path.'.htaccess',LOGLEVEL_DEBUG);
      }
		
      //* Remove .htaccess file
      if($data['new']['active'] == 'n' && is_file($new_folder_path.'.htaccess')) {
         unlink($new_folder_path.'.htaccess');
         $app->log('Removed file'.$new_folder_path.'.htaccess',LOGLEVEL_DEBUG);
      }
		
		
   }

   /**
@@ -1255,8 +1635,10 @@
                  */
                  $fn = substr($file, 0, strlen($file) - strlen('.htdigest'));
                  $output .= "\n";
                  $output .= "      Alias /" . $fn . ' ' . $webdavRoot . '/' . $fn . "\n";
                  $output .= "      <Location /" . $fn . ">\n";
                  // $output .= "      Alias /" . $fn . ' ' . $webdavRoot . '/' . $fn . "\n";
                  // $output .= "      <Location /" . $fn . ">\n";
                  $output .= "      Alias /webdav/" . $fn . ' ' . $webdavRoot . '/' . $fn . "\n";
                  $output .= "      <Location /webdav/" . $fn . ">\n";
                  $output .= "        DAV On\n";
                  $output .= "        AuthType Digest\n";
                  $output .= "        AuthName \"" . $fn . "\"\n";
@@ -1316,6 +1698,9 @@
         file_put_contents($awstats_conf_dir.'/awstats.'.$data['new']['domain'].'.conf',$content);
         $app->log('Created AWStats config file: '.$awstats_conf_dir.'/awstats.'.$data['new']['domain'].'.conf',LOGLEVEL_DEBUG);
      }
		
      unlink($data['new']['document_root']."/web/stats/index.html");
      copy("/usr/local/ispconfig/server/conf/awstats_index.php.master",$data['new']['document_root']."/web/stats/index.php");
   }
   
   //* Delete the awstats configuration file
@@ -1328,6 +1713,27 @@
         unlink($awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf');
         $app->log('Removed AWStats config file: '.$awstats_conf_dir.'/awstats.'.$data['old']['domain'].'.conf',LOGLEVEL_DEBUG);
      }
   }
	
   function client_delete($event_name,$data) {
      global $app, $conf;
		
      $app->uses("getconf");
      $web_config = $app->getconf->get_server_config($conf["server_id"], 'web');
		
      $client_id = intval($data['old']['client_id']);
      if($client_id > 0) {
			
         $client_dir = $web_config['website_basedir'].'/clients/client'.$client_id;
         if(is_dir($client_dir) && !stristr($client_dir,'..')) {
            @rmdir($client_dir);
            $app->log('Removed client directory: '.$client_dir,LOGLEVEL_DEBUG);
         }
			
         $this->_exec('groupdel client'.$client_id);
         $app->log('Removed group client'.$client_id,LOGLEVEL_DEBUG);
      }
		
   }

   //* Wrapper for exec function for easier debugging
@@ -1349,7 +1755,32 @@
      }
   }

   public function create_relative_link($f, $t) {
      // $from already exists
      $from = realpath($f);

      // realpath requires the traced file to exist - so, lets touch it first, then remove
      @unlink($t); touch($t);
      $to = realpath($t);
      @unlink($t);

      // Remove from the left side matching path elements from $from and $to
      // and get path elements counts
      $a1 = explode('/', $from); $a2 = explode('/', $to);
      for ($c = 0; $a1[$c] == $a2[$c]; $c++) {
         unset($a1[$c]); unset($a2[$c]);
      }
      $cfrom = implode('/', $a1);

      // Check if a path is fully a subpath of another - no way to create symlink in the case
      if (count($a1) == 0 || count($a2) == 0) return false;

      // Add ($cnt_to-1) number of "../" elements to left side of $cfrom
      for ($c = 0; $c < (count($a2)-1); $c++) { $cfrom = '../'.$cfrom; }

      return symlink($cfrom, $to);
   }

} // end class

?>
?>