From ad99ed4526fc0530ce8669c462b76c8a70047a23 Mon Sep 17 00:00:00 2001
From: jennylee <jennylee@colosa.com>
Date: Mon, 20 Oct 2014 17:41:47 -0400
Subject: [PATCH] PM-483 FEATURE. Warning al ingresar a PM desde un browser no
 soportado.

Se aniadio la funcion detectBrowser() en la clase G, para poder determinar desde sysLogin.php(login sin variables en cache) y Login.php(login con variables en cache) desde que browser accede el usuario y lanzar un warning para avisarle si soportamos o no dicho navegador.

Se uso los datos de la Wiki (http://wiki.processmaker.com/index.php/2.0/ProcessMaker_Installation_Requirements#Web_Browser_Compatibility) para la version 2.5.0 de pm como minimas versiones soportadas para PM2.8 (se detalla a continuacion).

Versiones soportadas para PM 2.8:
- IE -> 8, 9, 10, 11
- Chrome -> 26.0.x en adelante.
- Firefox -> 20.x en adelante.
---
 gulliver/system/class.g.php                | 43 ++++++++++++++++++++++
 workflow/engine/methods/login/login.php    |  7 ++++
 workflow/engine/methods/login/sysLogin.php |  7 ++++
 3 files changed, 57 insertions(+)

diff --git a/gulliver/system/class.g.php b/gulliver/system/class.g.php
index 0db4130ac..02523e5db 100755
--- a/gulliver/system/class.g.php
+++ b/gulliver/system/class.g.php
@@ -5518,6 +5518,49 @@ class G
     		return $res;
     	}
     }
+
+    /**
+     * Get the actual browser.
+     */
+    public function getActualBrowser(){
+    	$browser=array("TRIDENT","IE","OPERA","MOZILLA","NETSCAPE","FIREFOX","SAFARI","CHROME");
+    	$info['browser'] = "OTHER";
+    
+    	foreach($browser as $parent){
+    		if($parent == 'TRIDENT'){
+    			$parent = "RV";
+    		}
+    		$s = strpos(strtoupper($_SERVER['HTTP_USER_AGENT']), $parent);
+    		$f = $s + strlen($parent);
+    		$version = substr($_SERVER['HTTP_USER_AGENT'], $f, 15);
+    		$version = preg_replace('/[^0-9,.]/','',$version);
+    		if ($s){
+    			$info['browser'] = $parent;
+    			$info['version'] = $version;
+    		}
+    	}
+    
+    	$info['browser'] = ($info['browser']=='RV')? 'IE':$info['browser'];
+    	return $info;
+    }
+    
+    /**
+     * Check the browser compativility
+     */
+    public function checkBrowserCompatibility($browser = null, $version = null){
+    	if($browser == null || $version == null){
+    		$info = G::getActualBrowser();
+    		$browser = $info['browser'];
+    		$version = $info['version'];
+    	}
+    	if ((($browser== 'IE') && (($version >= 8) && ($version <= 11))) ||
+    			(($browser== 'CHROME') && ($version >= 26)) ||
+    			(($browser== 'FIREFOX') && ($version >= 20))
+    	){
+    		return true;
+    	}
+    	return false;
+    }
 }
 
 /**
diff --git a/workflow/engine/methods/login/login.php b/workflow/engine/methods/login/login.php
index d6817e320..a6f201149 100755
--- a/workflow/engine/methods/login/login.php
+++ b/workflow/engine/methods/login/login.php
@@ -22,6 +22,13 @@
  * Coral Gables, FL, 33134, USA, or email info@colosa.com.
  *
  */
+//Browser Compatibility
+$browserSupported = G::checkBrowserCompatibility();
+if ($browserSupported==false){
+	if(!isset($_SESSION['G_MESSAGE']) || $_SESSION['G_MESSAGE'] == ""){
+		G::SendTemporalMessage ('ID_BROWSER_NOT_SUPPORTED', 'warning');
+	}
+}
 
 $aFields = array();
 
diff --git a/workflow/engine/methods/login/sysLogin.php b/workflow/engine/methods/login/sysLogin.php
index ab76b29e0..3097376c3 100755
--- a/workflow/engine/methods/login/sysLogin.php
+++ b/workflow/engine/methods/login/sysLogin.php
@@ -22,6 +22,13 @@
  * Coral Gables, FL, 33134, USA, or email info@colosa.com.
  *
  */
+//Browser Compatibility
+$browserSupported = G::checkBrowserCompatibility();
+if ($browserSupported==false){
+	if(!isset($_SESSION['G_MESSAGE']) || $_SESSION['G_MESSAGE'] == ""){
+		G::SendTemporalMessage ('ID_BROWSER_NOT_SUPPORTED', 'warning');
+	}
+}
 
 if (isset ($_POST['form']['USER_ENV'])) {
     @session_destroy();