Merge branch 'develop' of git://github.com/EllisLab/CodeIgniter into develop

7 files changed, 61 insertions, 28 deletions

diff --git a/system/core/Input.php b/system/core/Input.php
index ee15f4013..5a4659a5a 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -699,6 +699,23 @@ class CI_Input {
 		return (php_sapi_name() === 'cli' OR defined('STDIN'));
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * Get Request Method
+	 *
+	 * Return the Request Method
+	 *
+	 * @param	bool	uppercase or lowercase
+	 * @return 	bool
+	 */
+	public function method($upper = FALSE)
+	{
+		return ($upper)
+			? strtoupper($this->server('REQUEST_METHOD'))
+			: strtolower($this->server('REQUEST_METHOD'));
+	}
+
 }
 
 /* End of file Input.php */
diff --git a/system/core/Security.php b/system/core/Security.php
index 6f25fb5bb..2bffa41b7 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -138,8 +138,8 @@ class CI_Security {
 	 */
 	public function csrf_verify()
 	{
-		// If no POST data exists we will set the CSRF cookie
-		if (count($_POST) === 0)
+		// If it's not a POST request we will set the CSRF cookie
+		if (strtoupper($_SERVER['REQUEST_METHOD']) !== 'POST')
 		{
 			return $this->csrf_set_cookie();
 		}
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 668b034d4..4a48df27e 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -5,9 +5,9 @@
  * An open source application development framework for PHP 5.1.6 or newer
  *
  * NOTICE OF LICENSE
- * 
+ *
  * Licensed under the Open Software License version 3.0
- * 
+ *
  * This source file is subject to the Open Software License (OSL 3.0) that is
  * bundled with this package in the files license.txt / license.rst.  It is
  * also available through the world wide web at this URL:
@@ -94,16 +94,15 @@ if ( ! function_exists('create_captcha'))
 		// Remove old images
 		// -----------------------------------
 
-		list($usec, $sec) = explode(" ", microtime());
-		$now = ((float)$usec + (float)$sec);
+		$now = microtime(TRUE);
 
 		$current_dir = @opendir($img_path);
 
 		while ($filename = @readdir($current_dir))
 		{
-			if ($filename != "." and $filename != ".." and $filename != "index.html")
+			if ($filename != '.' && $filename != '..' && $filename != 'index.html')
 			{
-				$name = str_replace(".jpg", "", $filename);
+				$name = str_replace('.jpg', '', $filename);
 
 				if (($name + $expiration) < $now)
 				{
@@ -198,7 +197,7 @@ if ( ! function_exists('create_captcha'))
 		//  Write the text
 		// -----------------------------------
 
-		$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
+		$use_font = ($font_path != '' && file_exists($font_path) && function_exists('imagettftext')) ? TRUE : FALSE;
 
 		if ($use_font == FALSE)
 		{
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index cdb3d3d62..bd8b7c216 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -65,7 +65,7 @@ class CI_Form_validation {
 			mb_internal_encoding($this->CI->config->item('charset'));
 		}
 
-		log_message('debug', "Form Validation Class Initialized");
+		log_message('debug', 'Form Validation Class Initialized');
 	}
 
 	// --------------------------------------------------------------------
@@ -84,7 +84,7 @@ class CI_Form_validation {
 	{
 		// No reason to set rules if we have no POST data
 		// or a validation array has not been specified
-		if (count($_POST) === 0 && count($this->validation_data) === 0)
+		if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
 		{
 			return $this;
 		}
@@ -165,9 +165,9 @@ class CI_Form_validation {
 	 *
 	 * If an array is set through this method, then this array will
 	 * be used instead of the $_POST array
-	 * 
-	 * Note that if you are validating multiple arrays, then the 
-	 * reset_validation() function should be called after validating 
+	 *
+	 * Note that if you are validating multiple arrays, then the
+	 * reset_validation() function should be called after validating
 	 * each array due to the limitations of CI's singleton
 	 *
 	 * @param	array	$data
@@ -1156,15 +1156,14 @@ class CI_Form_validation {
 	}
 
 	// --------------------------------------------------------------------
-	
+
 	/**
 	 * Equal to or Greater than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
-	function greater_than_equal_to($str, $min)
+	public function greater_than_equal_to($str, $min)
 	{
 		if ( ! is_numeric($str))
 		{
@@ -1195,11 +1194,10 @@ class CI_Form_validation {
 	/**
 	 * Equal to or Less than
 	 *
-	 * @access	public
 	 * @param	string
 	 * @return	bool
 	 */
-	function less_than_equal_to($str, $max)
+	public function less_than_equal_to($str, $max)
 	{
 		if ( ! is_numeric($str))
 		{
@@ -1351,7 +1349,7 @@ class CI_Form_validation {
 	 * Prevents subsequent validation routines from being affected by the
 	 * results of any previous validation routine due to the CI singleton.
 	 *
-	 * @return void
+	 * @return	void
 	 */
 	public function reset_validation()
 	{
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 3d46a4d7c..7f8f9bd8b 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -99,6 +99,7 @@ Release Date: Not Released
    -  Added method get_vars() to CI_Loader to retrieve all variables loaded with $this->load->vars().
    -  is_loaded() function from system/core/Commons.php now returns a reference.
    -  $config['rewrite_short_tags'] now has no effect when using PHP 5.4 as *<?=* will always be available.
+   -  Added method() to CI_Input to retrieve $_SERVER['REQUEST_METHOD'].
 
 Bug fixes for 3.0
 ------------------
@@ -148,6 +149,8 @@ Bug fixes for 3.0
 -  Fixed a bug in Oracle's DB_result class where the cursor id passed to it was always NULL.
 -  Fixed a bug (#64) - Regular expression in DB_active_rec.php failed to handle queries containing SQL bracket delimiters in the join condition.
 -  Fixed a bug in the :doc:`Session Library <libraries/sessions>` where a PHP E_NOTICE error was triggered by _unserialize() due to results from databases such as MSSQL and Oracle being space-padded on the right.
+-  Fixed a bug (#501) - set_rules() to check if the request method is not 'POST' before aborting, instead of depending on count($_POST) in the :doc:`Form Validation Library <libraries/form_validation>`.
+-  Fixed a bug (#940) - csrf_verify() used to set the CSRF cookie while processing a POST request with no actual POST data, which resulted in validating a request that should be considered invalid.
 
 Version 2.1.1
 =============
diff --git a/user_guide_src/source/general/creating_libraries.rst b/user_guide_src/source/general/creating_libraries.rst
index bc545b483..673fbd4bb 100644
--- a/user_guide_src/source/general/creating_libraries.rst
+++ b/user_guide_src/source/general/creating_libraries.rst
@@ -188,17 +188,23 @@ application/libraries/MY_Email.php, and declare your class with::
 
 	}
 
-Note: If you need to use a constructor in your class make sure you
+If you need to use a constructor in your class make sure you
 extend the parent constructor::
 
 	class MY_Email extends CI_Email {
 
-	    public function __construct()
-	    {
-	        parent::__construct();
-	    }
+		public function __construct($config = array())
+		{
+			parent::__construct($config);
+		}
+
 	}
 
+.. note::
+	Not all of the libraries have the same (or any) parameters
+	in their constructor. Take a look at the library that you're
+	extending first to see how it should be implemented.
+
 Loading Your Sub-class
 ----------------------
 
diff --git a/user_guide_src/source/libraries/input.rst b/user_guide_src/source/libraries/input.rst
index bcf117358..1f2ea650a 100644
--- a/user_guide_src/source/libraries/input.rst
+++ b/user_guide_src/source/libraries/input.rst
@@ -99,7 +99,7 @@ The function returns FALSE (boolean) if there are no items in the POST.
 
 ::
 
-	$this->input->post(NULL, TRUE); // returns all POST items with XSS filter 
+	$this->input->post(NULL, TRUE); // returns all POST items with XSS filter
 	$this->input->post(); // returns all POST items without XSS filter
 
 $this->input->get()
@@ -119,9 +119,9 @@ The function returns FALSE (boolean) if there are no items in the GET.
 
 ::
 
-	$this->input->get(NULL, TRUE); // returns all GET items with XSS filter 
+	$this->input->get(NULL, TRUE); // returns all GET items with XSS filter
 	$this->input->get(); // returns all GET items without XSS filtering
-	
+
 
 $this->input->get_post()
 =========================
@@ -298,3 +298,13 @@ see if PHP is being run on the command line.
 
 	$this->input->is_cli_request()
 
+$this->input->method();
+=====================================
+
+Returns the $_SERVER['REQUEST_METHOD'], optional set uppercase or lowercase (default lowercase).
+
+::
+
+	echo $this->input->method(TRUE); // Outputs: POST
+	echo $this->input->method(FALSE); // Outputs: post
+	echo $this->input->method(); // Outputs: post