URI schemes are not case-sensitive

Signed-off-by: Vivek Dinesh <vivekdinesh5@gmail.com>

3 files changed, 5 insertions, 5 deletions

diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
index fd7b5e116..82b9e02af 100644
--- a/system/helpers/url_helper.php
+++ b/system/helpers/url_helper.php
@@ -443,7 +443,7 @@ if ( ! function_exists('prep_url'))
 	 */
 	function prep_url($str = '')
 	{
-		if ($str === 'http://' OR $str === '')
+		if (strtolower($str) === 'http://' OR $str === '')
 		{
 			return '';
 		}
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 61f0298fd..fa28a6207 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -1523,12 +1523,12 @@ class CI_Form_validation {
 	 */
 	public function prep_url($str = '')
 	{
-		if ($str === 'http://' OR $str === '')
+		if (strtolower($str) === 'http://' OR $str === '')
 		{
 			return '';
 		}
 
-		if (strpos($str, 'http://') !== 0 && strpos($str, 'https://') !== 0)
+		if (stripos($str, 'http://') !== 0 && stripos($str, 'https://') !== 0)
 		{
 			return 'http://'.$str;
 		}
diff --git a/system/libraries/Javascript.php b/system/libraries/Javascript.php
index dcf933779..2ddab38ee 100644
--- a/system/libraries/Javascript.php
+++ b/system/libraries/Javascript.php
@@ -650,11 +650,11 @@ class CI_Javascript {
 			$this->_javascript_location = $this->CI->config->item('javascript_location');
 		}
 
-		if ($relative === TRUE OR strpos($external_file, 'http://') === 0 OR strpos($external_file, 'https://') === 0)
+		if ($relative === TRUE OR stripos($external_file, 'http://') === 0 OR stripos($external_file, 'https://') === 0)
 		{
 			$str = $this->_open_script($external_file);
 		}
-		elseif (strpos($this->_javascript_location, 'http://') !== FALSE)
+		elseif (stripos($this->_javascript_location, 'http://') !== FALSE)
 		{
 			$str = $this->_open_script($this->_javascript_location.$external_file);
 		}