From 82d2cf17e77d0ca5ffdcaafb72ca2d3dc82dc142 Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@bofh.bg>
Date: Sat, 13 Oct 2012 12:38:42 +0300
Subject: Fix CI_Input::ip_address() subnet detection

---
 system/core/Input.php | 48 ++++++++++++++++++++++++++++--------------------
 1 file changed, 28 insertions(+), 20 deletions(-)

(limited to 'system/core')

diff --git a/system/core/Input.php b/system/core/Input.php
index 82482f2aa..ec935d531 100644
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -390,31 +390,32 @@ class CI_Input {
 					}
 
 					// Convert the REMOTE_ADDR IP address to binary, if needed
-					if ( ! isset($ip, $convert_func))
+					if ( ! isset($ip, $sprintf))
 					{
 						if ($separator === ':')
 						{
 							// Make sure we're have the "full" IPv6 format
-							$ip = str_replace('::', str_repeat(':', 9 - substr_count($this->ip_address, ':')), $this->ip_address);
-							$convert_func = is_php('5.3')
-								? function ($value)
-									{
-										return str_pad(base_convert($value, 16, 2), 16, '0', STR_PAD_LEFT);
-									}
-								: create_function('$value', 'return str_pad(base_convert($value, 16, 2), 16, "0", STR_PAD_LEFT);');
+							$ip = explode(':',
+								str_replace('::',
+									str_repeat(':', 9 - substr_count($this->ip_address, ':')),
+									$this->ip_address
+								)
+							);
+
+							for ($i = 0; $i < 8; $i++)
+							{
+								$ip[$i] = intval($ip[$i], 16);
+							}
+
+							$sprintf = '%016b%016b%016b%016b%016b%016b%016b%016b';
 						}
 						else
 						{
-							$ip = $this->ip_address;
-							$convert_func = is_php('5.3')
-								? function ($value)
-									{
-										return str_pad(decbin($value), 8, '0', STR_PAD_LEFT);
-									}
-								: create_function('$value', 'return str_pad(decbin($value), 8, "0", STR_PAD_LEFT);');
+							$ip = explode('.', $this->ip_address);
+							$sprintf = '%08b%08b%08b%08b';
 						}
 
-						$ip = implode(array_map($convert_func, explode($separator, $ip)));
+						$ip = vsprintf($sprintf, $ip);
 					}
 
 					// Split the netmask length off the network address
@@ -423,12 +424,19 @@ class CI_Input {
 					// Again, an IPv6 address is most likely in a compressed form
 					if ($separator === ':')
 					{
-						$netaddr = str_replace('::', str_repeat(':', 9 - substr_count($netaddr, ':')), $netaddr);
+						$netaddr = explode(':', str_replace('::', str_repeat(':', 9 - substr_count($netaddr, ':')), $netaddr));
+						for ($i = 0; $i < 8; $i++)
+						{
+							$netaddr[$i] = intval($netaddr[$i], 16);
+						}
+					}
+					else
+					{
+						$netaddr = explode('.', $netaddr);
 					}
 
-					// Convert to a binary form and finally compare
-					$netaddr = implode(array_map($convert_func, explode($separator, $netaddr)));
-					if (strncmp($ip, $netaddr, $masklen) === 0)
+					// Convert to binary and finally compare
+					if (strncmp($ip, vsprintf($sprintf, $netaddr), $masklen) === 0)
 					{
 						$this->ip_address = $spoof;
 						break;
-- 
cgit v1.2.3-24-g4f1b


From 3fb026713013b60845c4cfe633a8a59a30b9c7dd Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@bofh.bg>
Date: Mon, 22 Oct 2012 16:48:01 +0300
Subject: Add is_https() as a common function

---
 system/core/Common.php   | 18 ++++++++++++++++++
 system/core/Config.php   |  2 +-
 system/core/Security.php |  2 +-
 3 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'system/core')

diff --git a/system/core/Common.php b/system/core/Common.php
index 341402c6b..2dd31d3e9 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -330,6 +330,24 @@ if ( ! function_exists('get_mimes'))
 
 // ------------------------------------------------------------------------
 
+if ( ! function_exists('is_https'))
+{
+	/**
+	 * Is HTTPS?
+	 *
+	 * Determines if the application is accessed via an encrypted
+	 * (HTTPS) connection.
+	 *
+	 * @return	bool
+	 */
+	function is_https()
+	{
+		return ( ! empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off');
+	}
+}
+
+// ------------------------------------------------------------------------
+
 if ( ! function_exists('show_error'))
 {
 	/**
diff --git a/system/core/Config.php b/system/core/Config.php
index 8e4f998ef..e78128c76 100644
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -75,7 +75,7 @@ class CI_Config {
 		{
 			if (isset($_SERVER['HTTP_HOST']))
 			{
-				$base_url = ( ! empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') ? 'https' : 'http';
+				$base_url = is_https() ? 'https' : 'http';
 				$base_url .= '://'.$_SERVER['HTTP_HOST']
 					.str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
 			}
diff --git a/system/core/Security.php b/system/core/Security.php
index b22d2cf19..2fbc5b34c 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -198,7 +198,7 @@ class CI_Security {
 		$expire = time() + $this->_csrf_expire;
 		$secure_cookie = (bool) config_item('cookie_secure');
 
-		if ($secure_cookie && (empty($_SERVER['HTTPS']) OR strtolower($_SERVER['HTTPS']) === 'off'))
+		if ($secure_cookie && ! is_https())
 		{
 			return FALSE;
 		}
-- 
cgit v1.2.3-24-g4f1b