From dc7aa0813f52eed4eb039a21ee13d6a5cb7f104c Mon Sep 17 00:00:00 2001
From: Till Brehm <tbrehm@ispconfig.org>
Date: Thu, 19 May 2016 05:01:32 -0400
Subject: [PATCH] Merge branch 'master' into 'stable-3.1'

---
 install/lib/install.lib.php |  652 ++++++++++++++++++++++++++++++++++++++++++-----------------
 1 files changed, 463 insertions(+), 189 deletions(-)

diff --git a/install/lib/install.lib.php b/install/lib/install.lib.php
index 318cda9..3afc988 100644
--- a/install/lib/install.lib.php
+++ b/install/lib/install.lib.php
@@ -7,14 +7,14 @@
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright notice,
-      this list of conditions and the following disclaimer in the documentation
-      and/or other materials provided with the distribution.
-    * Neither the name of ISPConfig nor the names of its contributors
-      may be used to endorse or promote products derived from this software without
-      specific prior written permission.
+		* Redistributions of source code must retain the above copyright notice,
+			this list of conditions and the following disclaimer.
+		* Redistributions in binary form must reproduce the above copyright notice,
+			this list of conditions and the following disclaimer in the documentation
+			and/or other materials provided with the distribution.
+		* Neither the name of ISPConfig nor the names of its contributors
+			may be used to endorse or promote products derived from this software without
+			specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
@@ -47,7 +47,7 @@
 {
 echo "Argument $i : $argv[$i] \n";
 }
-?> 
+?>
 
 */
 error_reporting(E_ALL|E_STRICT);
@@ -60,34 +60,161 @@
 //   This is the same code as in server/lib/classes/monitor_tools.inc.php
 //   So if you change it here, you also have to change it in there!
 function get_distname() {
-	
+
 	$distname = '';
 	$distver = '';
 	$distid = '';
 	$distbaseid = '';
-	
-	//** Debian or Ubuntu
-	if(file_exists('/etc/debian_version')) {
-	
-		if(trim(file_get_contents('/etc/debian_version')) == '4.0') {
+
+    //** Debian or Ubuntu
+    if (is_file('/etc/os-release') && stristr(file_get_contents('/etc/os-release'), 'Ubuntu')) {
+        $os_release = file_get_contents('/etc/os-release');
+        if (strstr(trim($os_release), 'LTS')) {
+            $lts = " LTS";
+        } else {
+            $lts = "";
+        }
+
+        preg_match("/.*VERSION=\"(.*)\".*/ui", $os_release, $ver);
+        $ver = str_replace("LTS", "", $ver[1]);
+        $ver = explode(" ", $ver, 2);
+        $relname = end($ver);
+        $relname = "(" . trim(trim($relname), "()") . ")";
+        $distname = 'Ubuntu';
+        $ver = reset($ver);
+        $distid = 'debian40';
+        $distbaseid = 'debian';
+        $distver = $ver . $lts . " " . $relname;
+        swriteln("Operating System: " . $distver . "\n");
+    } //** Debian / Ubuntu
+    elseif(file_exists('/etc/debian_version')) {
+		if (strstr(trim(file_get_contents('/etc/issue')), 'Ubuntu')) {
+			if (strstr(trim(file_get_contents('/etc/issue')), 'LTS')) {
+				$lts=" LTS";
+			} else {
+				$lts="";
+			}
+
+			$issue=file_get_contents('/etc/issue');
+			$distname = 'Ubuntu';
+			$distid = 'debian40';
+			$distbaseid = 'debian';
+			$ver = explode(' ', $issue);
+			$ver = array_filter($ver);
+			$ver = next($ver);
+			$mainver = explode('.', $ver);
+			$mainver = array_filter($mainver);
+			$mainver = current($mainver).'.'.next($mainver);
+			switch ($mainver){
+			case "16.04":
+				$relname = "(Xenial Xerus)";
+				$distid = 'ubuntu1604';
+				break;
+			case "15.10":
+				$relname = "(Wily Werewolf)";
+				break;
+			case "15.04":
+				$relname = "(Vivid Vervet)";
+				break;
+			case "14.10":
+				$relname = "(Utopic Unicorn)";
+				break;
+			case "14.04":
+				$relname = "(Trusty Tahr)";
+				break;
+			case "13.10":
+				$relname = "(Saucy Salamander)";
+				break;
+			case "13.04":
+				$relname = "(Raring Ringtail)";
+				break;
+			case "12.10":
+				$relname = "(Quantal Quetzal)";
+				break;
+			case "12.04":
+				$relname = "(Precise Pangolin)";
+				break;
+			case "11.10":
+				$relname = "(Oneiric Ocelot)";
+				break;
+			case "11.14":
+				$relname = "(Natty Narwhal)";
+				break;
+			case "10.10":
+				$relname = "(Maverick Meerkat)";
+				break;
+			case "10.04":
+				$relname = "(Lucid Lynx)";
+				break;
+			case "9.10":
+				$relname = "(Karmic Koala)";
+				break;
+			case "9.04":
+				$relname = "(Jaunty Jackpole)";
+				break;
+			case "8.10":
+				$relname = "(Intrepid Ibex)";
+				break;
+			case "8.04":
+				$relname = "(Hardy Heron)";
+				break;
+			case "7.10":
+				$relname = "(Gutsy Gibbon)";
+				break;
+			case "7.04":
+				$relname = "(Feisty Fawn)";
+				break;
+			case "6.10":
+				$relname = "(Edgy Eft)";
+				break;
+			case "6.06":
+				$relname = "(Dapper Drake)";
+				break;
+			case "5.10":
+				$relname = "(Breezy Badger)";
+				break;
+			case "5.04":
+				$relname = "(Hoary Hedgehog)";
+				break;
+			case "4.10":
+				$relname = "(Warty Warthog)";
+				break;
+			default:
+				$relname = "UNKNOWN";
+			}
+			$distver = $ver.$lts." ".$relname;
+			swriteln("Operating System: ".$distver."\n");
+		} elseif(trim(file_get_contents('/etc/debian_version')) == '4.0') {
 			$distname = 'Debian';
 			$distver = '4.0';
 			$distid = 'debian40';
 			$distbaseid = 'debian';
 			swriteln("Operating System: Debian 4.0 or compatible\n");
-		} elseif(strstr(trim(file_get_contents('/etc/debian_version')),'5.0')) {
+		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '5.0')) {
 			$distname = 'Debian';
 			$distver = 'Lenny';
 			$distid = 'debian40';
 			$distbaseid = 'debian';
 			swriteln("Operating System: Debian Lenny or compatible\n");
-		} elseif(strstr(trim(file_get_contents('/etc/debian_version')),'6.0') || trim(file_get_contents('/etc/debian_version')) == 'squeeze/sid') {
+		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '6.0') || trim(file_get_contents('/etc/debian_version')) == 'squeeze/sid') {
 			$distname = 'Debian';
 			$distver = 'Squeeze/Sid';
 			$distid = 'debian60';
 			$distbaseid = 'debian';
 			swriteln("Operating System: Debian 6.0 (Squeeze/Sid) or compatible\n");
-		}  else {
+		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '7.0') || substr(trim(file_get_contents('/etc/debian_version')),0,2) == '7.' || trim(file_get_contents('/etc/debian_version')) == 'wheezy/sid') {
+			$distname = 'Debian';
+			$distver = 'Wheezy/Sid';
+			$distid = 'debian60';
+			$distbaseid = 'debian';
+			swriteln("Operating System: Debian 7.0 (Wheezy/Sid) or compatible\n");
+		} elseif(strstr(trim(file_get_contents('/etc/debian_version')), '8') || substr(trim(file_get_contents('/etc/debian_version')),0,1) == '8') {
+			$distname = 'Debian';
+			$distver = 'Jessie';
+			$distid = 'debian60';
+			$distbaseid = 'debian';
+			swriteln("Operating System: Debian 8.0 (Jessie) or compatible\n");
+		} else {
 			$distname = 'Debian';
 			$distver = 'Unknown';
 			$distid = 'debian40';
@@ -95,22 +222,22 @@
 			swriteln("Operating System: Debian or compatible, unknown version.\n");
 		}
 	}
-	
+
 	//** OpenSuSE
 	elseif(file_exists('/etc/SuSE-release')) {
-		if(stristr(file_get_contents('/etc/SuSE-release'),'11.0')) {
+		if(stristr(file_get_contents('/etc/SuSE-release'), '11.0')) {
 			$distname = 'openSUSE';
 			$distver = '11.0';
 			$distid = 'opensuse110';
 			$distbaseid = 'opensuse';
 			swriteln("Operating System: openSUSE 11.0 or compatible\n");
-		} elseif(stristr(file_get_contents('/etc/SuSE-release'),'11.1')) {
+		} elseif(stristr(file_get_contents('/etc/SuSE-release'), '11.1')) {
 			$distname = 'openSUSE';
 			$distver = '11.1';
 			$distid = 'opensuse110';
 			$distbaseid = 'opensuse';
 			swriteln("Operating System: openSUSE 11.1 or compatible\n");
-		} elseif(stristr(file_get_contents('/etc/SuSE-release'),'11.2')) {
+		} elseif(stristr(file_get_contents('/etc/SuSE-release'), '11.2')) {
 			$distname = 'openSUSE';
 			$distver = '11.2';
 			$distid = 'opensuse112';
@@ -124,49 +251,67 @@
 			swriteln("Operating System: openSUSE or compatible, unknown version.\n");
 		}
 	}
-	
-	
+
+
 	//** Redhat
 	elseif(file_exists('/etc/redhat-release')) {
-		
+
 		$content = file_get_contents('/etc/redhat-release');
-		
-		if(stristr($content,'Fedora release 9 (Sulphur)')) {
+
+		if(stristr($content, 'Fedora release 9 (Sulphur)')) {
 			$distname = 'Fedora';
 			$distver = '9';
 			$distid = 'fedora9';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: Fedora 9 or compatible\n");
-		} elseif(stristr($content,'Fedora release 10 (Cambridge)')) {
+		} elseif(stristr($content, 'Fedora release 10 (Cambridge)')) {
 			$distname = 'Fedora';
 			$distver = '10';
 			$distid = 'fedora9';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: Fedora 10 or compatible\n");
-		} elseif(stristr($content,'Fedora release 10')) {
+		} elseif(stristr($content, 'Fedora release 10')) {
 			$distname = 'Fedora';
 			$distver = '11';
 			$distid = 'fedora9';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: Fedora 11 or compatible\n");
-		} elseif(stristr($content,'CentOS release 5.2 (Final)')) {
+		} elseif(stristr($content, 'CentOS release 5.2 (Final)')) {
 			$distname = 'CentOS';
 			$distver = '5.2';
 			$distid = 'centos52';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: CentOS 5.2 or compatible\n");
-		} elseif(stristr($content,'CentOS release 5.3 (Final)')) {
+		} elseif(stristr($content, 'CentOS release 5.3 (Final)')) {
 			$distname = 'CentOS';
 			$distver = '5.3';
 			$distid = 'centos53';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: CentOS 5.3 or compatible\n");
-		} elseif(stristr($content,'CentOS release 5')) {
+		} elseif(stristr($content, 'CentOS release 5')) {
 			$distname = 'CentOS';
 			$distver = 'Unknown';
 			$distid = 'centos53';
 			$distbaseid = 'fedora';
 			swriteln("Operating System: CentOS 5 or compatible\n");
+		} elseif(stristr($content, 'CentOS Linux release 6')) {
+			$distname = 'CentOS';
+			$distver = 'Unknown';
+			$distid = 'centos53';
+			$distbaseid = 'fedora';
+			swriteln("Operating System: CentOS 6 or compatible\n");
+		} elseif(stristr($content, 'CentOS Linux release 7.2')) {
+			$distname = 'CentOS';
+			$distver = 'Unknown';
+			$distid = 'centos72';
+			$distbaseid = 'fedora';
+			swriteln("Operating System: CentOS 7.2\n");
+		} elseif(stristr($content, 'CentOS Linux release 7')) {
+			$distname = 'CentOS';
+			$distver = 'Unknown';
+			$distid = 'centos70';
+			$distbaseid = 'fedora';
+			swriteln("Operating System: CentOS 7 or compatible\n");
 		} else {
 			$distname = 'Redhat';
 			$distver = 'Unknown';
@@ -175,29 +320,29 @@
 			swriteln("Operating System: Redhat or compatible, unknown version.\n");
 		}
 	}
-	
+
 	//** Gentoo
- 	elseif(file_exists('/etc/gentoo-release')) {
- 		
- 		$content = file_get_contents('/etc/gentoo-release');
- 
-        preg_match_all('/([0-9]{1,2})/', $content, $version);
- 		$distname = 'Gentoo';
- 		$distver = $version[0][0].$version[0][1];
- 		$distid = 'gentoo';
- 		$distbaseid = 'gentoo';
- 		swriteln("Operating System: Gentoo $distver or compatible\n");
-		
+	elseif(file_exists('/etc/gentoo-release')) {
+
+		$content = file_get_contents('/etc/gentoo-release');
+
+		preg_match_all('/([0-9]{1,2})/', $content, $version);
+		$distname = 'Gentoo';
+		$distver = $version[0][0].$version[0][1];
+		$distid = 'gentoo';
+		$distbaseid = 'gentoo';
+		swriteln("Operating System: Gentoo $distver or compatible\n");
+
 	} else {
 		die('Unrecognized GNU/Linux distribution');
 	}
-	
+
 	return array('name' => $distname, 'version' => $distver, 'id' => $distid, 'baseid' => $distbaseid);
 }
 
 function sread() {
-    $input = fgets(STDIN);
-    return rtrim($input);
+	$input = fgets(STDIN);
+	return rtrim($input);
 }
 
 function swrite($text = '') {
@@ -209,7 +354,7 @@
 }
 
 function ilog($msg){
-  	exec("echo `date` \"- [ISPConfig] - \"".$msg.' >> '.ISPC_LOG_FILE);
+	exec("echo `date` \"- [ISPConfig] - \"".$msg.' >> '.ISPC_LOG_FILE);
 }
 
 function error($msg){
@@ -218,7 +363,7 @@
 }
 
 function caselog($command, $file = '', $line = '', $success = '', $failure = ''){
-	exec($command,$arr,$ret_val);
+	exec($command, $arr, $ret_val);
 	$arr = NULL;
 	if(!empty($file) && !empty($line)){
 		$pre = $file.', Line '.$line.': ';
@@ -266,10 +411,16 @@
 	return false;
 }
 
+function rfsel($file, $file2) {
+	clearstatcache();
+	if(is_file($file)) return rf($file);
+	else return rf($file2);
+}
+
 function rf($file){
 	clearstatcache();
 	if(is_file($file)) {
-		if(!$fp = fopen ($file, 'rb')){
+		if(!$fp = fopen($file, 'rb')){
 			ilog('WARNING: could not open file '.$file);
 		}
 		return filesize($file) > 0 ? fread($fp, filesize($file)) : '';
@@ -280,7 +431,7 @@
 
 function wf($file, $content){
 	mkdirs(dirname($file));
-	if(!$fp = fopen ($file, 'wb')){
+	if(!$fp = fopen($file, 'wb')){
 		ilog('WARNING: could not open file '.$file);
 	}
 	fwrite($fp, $content);
@@ -289,18 +440,18 @@
 
 function af($file, $content){
 	mkdirs(dirname($file));
-	if(!$fp = fopen ($file, 'ab')){
+	if(!$fp = fopen($file, 'ab')){
 		ilog('WARNING: could not open file '.$file);
 	}
-	fwrite($fp,$content);
+	fwrite($fp, $content);
 	fclose($fp);
 }
 
 function aftsl($file, $content){
-	if(!$fp = fopen ($file, 'ab')){
+	if(!$fp = fopen($file, 'ab')){
 		ilog('WARNING: could not open file '.$file);
 	}
-	fwrite($fp,$content);
+	fwrite($fp, $content);
 	fclose($fp);
 }
 
@@ -343,7 +494,7 @@
 			if(strstr($line, $comment)){
 				$pos = strpos($line, $comment);
 				if($pos != 0){
-					$new_lines[] = substr($line,0,$pos);
+					$new_lines[] = substr($line, 0, $pos);
 				}else{
 					$new_lines[] = '';
 				}
@@ -375,60 +526,60 @@
 }
 
 function is_word($string, $text, $params = ''){
-  //* params: i ??
-  return preg_match("/\b$string\b/$params", $text);
-  /*
-  if(preg_match("/\b$string\b/$params", $text)) {
-    return true;
-  } else {
-    return false;
-  }
-  */
+	//* params: i ??
+	return preg_match("/\b$string\b/$params", $text);
+	/*
+	if(preg_match("/\b$string\b/$params", $text)) {
+		return true;
+	} else {
+		return false;
+	}
+	*/
 }
 
 function grep($content, $string, $params = ''){
-  // params: i, v, w
-  $content = unix_nl($content);
-  $lines = explode("\n", $content);
-  foreach($lines as $line){
-    if(!strstr($params, 'w')){
-      if(strstr($params, 'i')){
-        if(strstr($params, 'v')){
-          if(!stristr($line, $string)) $find[] = $line;
-        } else {
-          if(stristr($line, $string)) $find[] = $line;
-        }
-      } else {
-        if(strstr($params, 'v')){
-          if(!strstr($line, $string)) $find[] = $line;
-        } else {
-          if(strstr($line, $string)) $find[] = $line;
-        }
-      }
-    } else {
-      if(strstr($params, 'i')){
-        if(strstr($params, 'v')){
-          if(!is_word($string, $line, 'i')) $find[] = $line;
-        } else {
-          if(is_word($string, $line, 'i')) $find[] = $line;
-        }
-      } else {
-        if(strstr($params, 'v')){
-          if(!is_word($string, $line)) $find[] = $line;
-        } else {
-          if(is_word($string, $line)) $find[] = $line;
-        }
-      }
-    }
-  }
-  if(is_array($find)){
-    $ret_val = implode("\n", $find);
-    if(substr($ret_val,-1) != "\n") $ret_val .= "\n";
-    $find = NULL;
-    return $ret_val;
-  } else {
-    return false;
-  }
+	// params: i, v, w
+	$content = unix_nl($content);
+	$lines = explode("\n", $content);
+	foreach($lines as $line){
+		if(!strstr($params, 'w')){
+			if(strstr($params, 'i')){
+				if(strstr($params, 'v')){
+					if(!stristr($line, $string)) $find[] = $line;
+				} else {
+					if(stristr($line, $string)) $find[] = $line;
+				}
+			} else {
+				if(strstr($params, 'v')){
+					if(!strstr($line, $string)) $find[] = $line;
+				} else {
+					if(strstr($line, $string)) $find[] = $line;
+				}
+			}
+		} else {
+			if(strstr($params, 'i')){
+				if(strstr($params, 'v')){
+					if(!is_word($string, $line, 'i')) $find[] = $line;
+				} else {
+					if(is_word($string, $line, 'i')) $find[] = $line;
+				}
+			} else {
+				if(strstr($params, 'v')){
+					if(!is_word($string, $line)) $find[] = $line;
+				} else {
+					if(is_word($string, $line)) $find[] = $line;
+				}
+			}
+		}
+	}
+	if(is_array($find)){
+		$ret_val = implode("\n", $find);
+		if(substr($ret_val, -1) != "\n") $ret_val .= "\n";
+		$find = NULL;
+		return $ret_val;
+	} else {
+		return false;
+	}
 }
 
 function edit_xinetd_conf($service){
@@ -470,7 +621,7 @@
 	$ini = str_replace("\r\n", "\n", $ini);
 	$lines = explode("\n", $ini);
 	foreach($lines as $line) {
-        $line = trim($line);                
+		$line = trim($line);
 		if($line != '') {
 			if(preg_match("/^\[([\w\d_]+)\]$/", $line, $matches)) {
 				$section = strtolower($matches[1]);
@@ -482,8 +633,8 @@
 	}
 	return $config;
 }
-	
-	
+
+
 //* Converts a config array to a string
 function array_to_ini($config_array = '') {
 	if($config_array == '') $config_array = $this->config;
@@ -492,8 +643,8 @@
 		$content .= "[$section]\n";
 		foreach($data as $item => $value) {
 			if($item != ''){
-                $content .= "$item=$value\n";
-            }
+				$content .= "$item=$value\n";
+			}
 		}
 		$content .= "\n";
 	}
@@ -501,44 +652,44 @@
 }
 
 function is_user($user){
-  global $mod;
-  $user_datei = '/etc/passwd';
-  $users = no_comments($user_datei);
-  $lines = explode("\n", $users);
-  if(is_array($lines)){
-    foreach($lines as $line){
-      if(trim($line) != ''){
-        list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
-        if($f1 == $user) return true;
-      }
-    }
-  }
-  return false;
+	global $mod;
+	$user_datei = '/etc/passwd';
+	$users = no_comments($user_datei);
+	$lines = explode("\n", $users);
+	if(is_array($lines)){
+		foreach($lines as $line){
+			if(trim($line) != ''){
+				list($f1, $f2, $f3, $f4, $f5, $f6, $f7) = explode(':', $line);
+				if($f1 == $user) return true;
+			}
+		}
+	}
+	return false;
 }
 
 function is_group($group){
-  global $mod;
-  $group_datei = '/etc/group';
-  $groups = no_comments($group_datei);
-  $lines = explode("\n", $groups);
-  if(is_array($lines)){
-    foreach($lines as $line){
-      if(trim($line) != ''){
-        list($f1, $f2, $f3, $f4) = explode(':', $line);
-        if($f1 == $group) return true;
-      }
-    }
-  }
-  return false;
+	global $mod;
+	$group_datei = '/etc/group';
+	$groups = no_comments($group_datei);
+	$lines = explode("\n", $groups);
+	if(is_array($lines)){
+		foreach($lines as $line){
+			if(trim($line) != ''){
+				list($f1, $f2, $f3, $f4) = explode(':', $line);
+				if($f1 == $group) return true;
+			}
+		}
+	}
+	return false;
 }
 
-function replaceLine($filename,$search_pattern,$new_line,$strict = 0,$append = 1) {
+function replaceLine($filename, $search_pattern, $new_line, $strict = 0, $append = 1) {
 	if($lines = @file($filename)) {
 		$out = '';
 		$found = 0;
 		foreach($lines as $line) {
 			if($strict == 0) {
-				if(stristr($line,$search_pattern)) {
+				if(stristr($line, $search_pattern)) {
 					$out .= $new_line."\n";
 					$found = 1;
 				} else {
@@ -552,23 +703,28 @@
 					$out .= $line;
 				}
 			}
+			if (!$found) {
+				if (trim($line) == $new_line) {
+					$found = 1;
+				}
+			}
 		}
 		if($found == 0) {
 			//* add \n if the last line does not end with \n or \r
-			if(substr($out,-1) != "\n" && substr($out,-1) != "\r") $out .= "\n";
+			if(substr($out, -1) != "\n" && substr($out, -1) != "\r") $out .= "\n";
 			//* add the new line at the end of the file
 			if($append == 1) $out .= $new_line."\n";
 		}
-		file_put_contents($filename,$out);
+		file_put_contents($filename, $out);
 	}
 }
-	
-function removeLine($filename,$search_pattern,$strict = 0) {
+
+function removeLine($filename, $search_pattern, $strict = 0) {
 	if($lines = @file($filename)) {
 		$out = '';
 		foreach($lines as $line) {
 			if($strict == 0) {
-				if(!stristr($line,$search_pattern)) {
+				if(!stristr($line, $search_pattern)) {
 					$out .= $line;
 				}
 			} else {
@@ -577,54 +733,34 @@
 				}
 			}
 		}
-		file_put_contents($filename,$out);
+		file_put_contents($filename, $out);
 	}
 }
 
+function hasLine($filename, $search_pattern, $strict = 0) {
+	if($lines = @file($filename)) {
+		foreach($lines as $line) {
+			if($strict == 0) {
+				if(stristr($line, $search_pattern)) {
+					return true;
+				}
+			} else {
+				if(trim($line) == $search_pattern) {
+					return true;
+				}
+			}
+		}
+	}
+	return false;
+}
+
 function is_installed($appname) {
-	exec('which '.escapeshellcmd($appname).' 2> /dev/null',$out);
-	if(isset($out[0]) && stristr($out[0],$appname)) {
+	exec('which '.escapeshellcmd($appname).' 2> /dev/null', $out, $returncode);
+	if(isset($out[0]) && stristr($out[0], $appname) && $returncode == 0) {
 		return true;
 	} else {
 		return false;
 	}
-}
-
-/*
- * Compare ISPConfig version number.
- * return values:
- * -1 $current version is newer then $new version (downgrade)
- * 0 $current version = $new version
- * 1 $current version is older then new version (update)
-
-*/
-function compare_ispconfig_version($current,$new) {
-	if( $current == $new) {
-		return 0;
-	}
-	
-	$p = explode('.',$current);
-	$tmp = '';
-	$tmp .= str_pad(intval($p[0]), 3, '0', STR_PAD_LEFT);
-	$tmp .= (isset($p[1]))?str_pad(intval($p[1]), 3, '0', STR_PAD_LEFT):'000';
-	$tmp .= (isset($p[2]))?str_pad(intval($p[2]), 3, '0', STR_PAD_LEFT):'000';
-	$tmp .= (isset($p[3]))?str_pad(intval($p[3]), 3, '0', STR_PAD_LEFT):'000';
-	$current = $tmp;
-	
-	$p = explode('.',$new);
-	$tmp = '';
-	$tmp .= str_pad(intval($p[0]), 3, '0', STR_PAD_LEFT);
-	$tmp .= (isset($p[1]))?str_pad(intval($p[1]), 3, '0', STR_PAD_LEFT):'000';
-	$tmp .= (isset($p[2]))?str_pad(intval($p[2]), 3, '0', STR_PAD_LEFT):'000';
-	$tmp .= (isset($p[3]))?str_pad(intval($p[3]), 3, '0', STR_PAD_LEFT):'000';
-	$new = $tmp;
-	
-	if($new > $current) {
-		return 1;
-	} else {
-		return -1;
-	}
-	
 }
 
 /*
@@ -640,15 +776,41 @@
 		$ispconfig_vhost_file = $conf['apache']['vhost_conf_dir'].'/ispconfig.vhost';
 		$regex = '/\<VirtualHost.*\:(\d{1,})\>/';
 	}
-	
+
 	if(is_file($ispconfig_vhost_file)) {
 		$tmp = file_get_contents($ispconfig_vhost_file);
-		preg_match($regex,$tmp,$matches);
-		$port_number = intval($matches[1]);
+		preg_match($regex, $tmp, $matches);
+		$port_number = @intval($matches[1]);
 		if($port_number > 0) {
 			return $port_number;
 		} else {
 			return '8080';
+		}
+	}
+}
+
+/*
+* Get the port number of the ISPConfig apps vhost
+*/
+
+function get_apps_vhost_port_number() {
+	global $conf;
+	if($conf['nginx']['installed'] == true){
+		$ispconfig_vhost_file = $conf['nginx']['vhost_conf_dir'].'/apps.vhost';
+		$regex = '/listen (\d+)/';
+	} else {
+		$ispconfig_vhost_file = $conf['apache']['vhost_conf_dir'].'/apps.vhost';
+		$regex = '/\<VirtualHost.*\:(\d{1,})\>/';
+	}
+
+	if(is_file($ispconfig_vhost_file)) {
+		$tmp = file_get_contents($ispconfig_vhost_file);
+		preg_match($regex, $tmp, $matches);
+		$port_number = @intval($matches[1]);
+		if($port_number > 0) {
+			return $port_number;
+		} else {
+			return '8081';
 		}
 	}
 }
@@ -663,7 +825,7 @@
 
 	if(is_file($ispconfig_vhost_file)) {
 		$tmp = file_get_contents($ispconfig_vhost_file);
-		if(stristr($tmp,'SSLCertificateFile')) {
+		if(stristr($tmp, 'SSLCertificateFile')) {
 			return true;
 		} else {
 			return false;
@@ -671,6 +833,118 @@
 	}
 }
 
+/**
+ Function to find the hash file for timezone detection
+ (c) 2012 Marius Cramer, pixcept KG, m.cramer@pixcept.de
+ */
 
 
+function find_hash_file($hash, $dir, $basedir = '') {
+	$res = opendir($dir);
+	if(!$res) return false;
+
+	if(substr($basedir, -1) === '/') $basedir = substr($basedir, 0, strlen($basedir) - 1);
+	if(substr($dir, -1) === '/') $dir = substr($dir, 0, strlen($dir) - 1);
+	if($basedir === '') $basedir = $dir;
+
+	while($cur = readdir($res)) {
+		if($cur == '.' || $cur == '..') continue;
+		$entry = $dir.'/'.$cur;
+		if(is_dir($entry)) {
+			$result = find_hash_file($hash, $entry, $basedir);
+			if($result !== false) return $result;
+		} elseif(md5_file($entry) === $hash) {
+			$entry = substr($entry, strlen($basedir) + 1);
+			if(substr($entry, 0, 7) === '/posix/') $entry = substr($entry, 7);
+			return $entry;
+		}
+	}
+	closedir($res);
+	return false;
+}
+
+
+/**
+ Function to get the timezone of the Linux system
+ (c) 2012 Marius Cramer, pixcept KG, m.cramer@pixcept.de
+ */
+function get_system_timezone() {
+	$timezone = false;
+	if(file_exists('/etc/timezone') && is_readable('/etc/timezone')) {
+		$timezone = trim(file_get_contents('/etc/timezone'));
+		if(file_exists('/usr/share/zoneinfo/' . $timezone) == false) $timezone = false;
+	}
+
+	if(!$timezone && is_link('/etc/localtime')) {
+		$timezone = readlink('/etc/localtime');
+		$timezone = str_replace('/usr/share/zoneinfo/', '', $timezone);
+		$timezone = str_replace('..', '', $timezone);
+		if(substr($timezone, 0, 6) === 'posix/') $timezone = substr($timezone, 6);
+	} elseif(!$timezone) {
+		$hash = md5_file('/etc/localtime');
+		$timezone = find_hash_file($hash, '/usr/share/zoneinfo');
+	}
+
+	if(!$timezone) {
+		exec('date +%Z', $tzinfo);
+		$timezone = $tzinfo[0];
+	}
+	
+	if(substr($timezone, 0, 1) === '/') $timezone = substr($timezone, 1);
+
+	return $timezone;
+}
+
+function getapacheversion($get_minor = false) {
+	global $app;
+	
+	$cmd = '';
+	if(is_installed('apache2ctl')) $cmd = 'apache2ctl -v';
+	elseif(is_installed('apachectl')) $cmd = 'apachectl -v';
+	else {
+		ilog("Could not check apache version, apachectl not found.");
+		return '2.2';
+	}
+	
+	exec($cmd, $output, $return_var);
+	if($return_var != 0 || !$output[0]) {
+		ilog("Could not check apache version, apachectl did not return any data.");
+		return '2.2';
+	}
+	
+	if(preg_match('/version:\s*Apache\/(\d+)(\.(\d+)(\.(\d+))*)?(\D|$)/i', $output[0], $matches)) {
+		return $matches[1] . (isset($matches[3]) ? '.' . $matches[3] : '') . (isset($matches[5]) && $get_minor == true ? '.' . $matches[5] : '');
+	} else {
+		ilog("Could not check apache version, did not find version string in apachectl output.");
+		return '2.2';
+	}
+}
+
+function getapachemodules() {
+	global $app;
+	
+	$cmd = '';
+	if(is_installed('apache2ctl')) $cmd = 'apache2ctl -t -D DUMP_MODULES';
+	elseif(is_installed('apachectl')) $cmd = 'apachectl -t -D DUMP_MODULES';
+	else {
+		ilog("Could not check apache modules, apachectl not found.");
+		return array();
+	}
+	
+	exec($cmd . ' 2>/dev/null', $output, $return_var);
+	if($return_var != 0 || !$output[0]) {
+		ilog("Could not check apache modules, apachectl did not return any data.");
+		return array();
+	}
+	
+	$modules = array();
+	for($i = 0; $i < count($output); $i++) {
+		if(preg_match('/^\s*(\w+)\s+\((shared|static)\)\s*$/', $output[$i], $matches)) {
+			$modules[] = $matches[1];
+		}
+	}
+	
+	return $modules;
+}
+
 ?>

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