From 24c866628d0ce5463d7e8b4eba512fa9e7752dfd Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@devilix.net>
Date: Wed, 14 Dec 2016 16:14:13 +0200
Subject: Drop all PHP 5.3-related code

---
 system/core/Security.php | 32 ++++----------------------------
 1 file changed, 4 insertions(+), 28 deletions(-)

(limited to 'system/core/Security.php')

diff --git a/system/core/Security.php b/system/core/Security.php
index d0308c5f9..a80b52fd1 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -626,7 +626,7 @@ class CI_Security {
 		if (is_readable('/dev/urandom') && ($fp = fopen('/dev/urandom', 'rb')) !== FALSE)
 		{
 			// Try not to waste entropy ...
-			is_php('5.4') && stream_set_chunk_size($fp, $length);
+			stream_set_chunk_size($fp, $length);
 			$output = fread($fp, $length);
 			fclose($fp);
 			if ($output !== FALSE)
@@ -671,26 +671,8 @@ class CI_Security {
 
 		static $_entities;
 
-		isset($charset) OR $charset = $this->charset;
-		$flag = is_php('5.4')
-			? ENT_COMPAT | ENT_HTML5
-			: ENT_COMPAT;
-
-		if ( ! isset($_entities))
-		{
-			$_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, $flag, $charset));
-
-			// If we're not on PHP 5.4+, add the possibly dangerous HTML 5
-			// entities to the array manually
-			if ($flag === ENT_COMPAT)
-			{
-				$_entities[':'] = '&colon;';
-				$_entities['('] = '&lpar;';
-				$_entities[')'] = '&rpar;';
-				$_entities["\n"] = '&NewLine;';
-				$_entities["\t"] = '&Tab;';
-			}
-		}
+		isset($charset)   OR $charset = $this->charset;
+		isset($_entities) OR $_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, ENT_COMPAT | ENT_HTML5, $charset));
 
 		do
 		{
@@ -715,14 +697,9 @@ class CI_Security {
 			// Decode numeric & UTF16 two byte entities
 			$str = html_entity_decode(
 				preg_replace('/(&#(?:x0*[0-9a-f]{2,5}(?![0-9a-f;])|(?:0*\d{2,4}(?![0-9;]))))/iS', '$1;', $str),
-				$flag,
+				ENT_COMPAT | ENT_HTML5,
 				$charset
 			);
-
-			if ($flag === ENT_COMPAT)
-			{
-				$str = str_replace(array_values($_entities), array_keys($_entities), $str);
-			}
 		}
 		while ($str_compare !== $str);
 		return $str;
@@ -1074,5 +1051,4 @@ class CI_Security {
 
 		return $this->_csrf_hash;
 	}
-
 }
-- 
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