From f86d3e76367ac1f6800ca62e9e23fb293cb8fc11 Mon Sep 17 00:00:00 2001
From: Thomas Gelf <thomas@gelf.net>
Date: Thu, 13 Nov 2014 16:35:26 +0100
Subject: [PATCH] Web\StyleSheet: PCRE problem workaround, PHP5.3.7

Lines with embedded fonts where too long for lessphp's PCRE matches
unless PHP 5.3.7
---
 library/Icinga/Web/StyleSheet.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/library/Icinga/Web/StyleSheet.php b/library/Icinga/Web/StyleSheet.php
index 53415628c..ec926d992 100644
--- a/library/Icinga/Web/StyleSheet.php
+++ b/library/Icinga/Web/StyleSheet.php
@@ -31,6 +31,7 @@ class StyleSheet
 
     public static function compileForPdf()
     {
+        self::checkPhp();
         $less = new LessCompiler();
         $basedir = Icinga::app()->getBootstrapDirectory();
         foreach (self::$lessFiles as $file) {
@@ -55,8 +56,17 @@ class StyleSheet
         );
     }
 
+    protected static function checkPhp()
+    {
+        // PHP had a rather conservative PCRE backtrack limit unless 5.3.7
+        if (version_compare(PHP_VERSION, '5.3.7') <= 0) {
+            ini_set('pcre.backtrack_limit', 1000000);
+        }
+    }
+
     public static function send($minified = false)
     {
+        self::checkPhp();
         $app = Icinga::app();
         $basedir = $app->getBootstrapDirectory();
         foreach (self::$lessFiles as $file) {