Slim - a micro PHP 5 framework. More...

Collaboration diagram for Slim_Http_CookieJar:

Public Member Functions
	__construct ($secret, $config=null)
	Constructor.
	getHighConfidentiality ()
	Get the high confidentiality mode.
	setHighConfidentiality ($enable)
	Enable or disable cookie data encryption.
	getSSL ()
	Get the SSL status (enabled or disabled?)
	setSSL ($enable)
	Enable SSL support (not enabled by default)
	getResponseCookies ()
	Get Cookies for Response.
	getResponseCookie ($cookiename)
	Get Cookie with name for Response.
	setCookie ($cookiename, $value, $username, $expire=0, $path= '/', $domain= '', $secure=false, $httponly=null)
	Set a secure cookie.
	deleteCookie ($name, $path= '/', $domain= '', $secure=false, $httponly=null)
	Delete a cookie.
	getCookieValue ($cookiename, $deleteIfInvalid=true)
	Get a secure cookie value.
	setClassicCookie ($cookiename, $value, $expire=0, $path= '/', $domain= '', $secure=false, $httponly=null)
	Send a classic (unsecure) cookie.
	cookieExists ($cookiename)
	Verify if a cookie exists.

Protected Member Functions
	_secureCookieValue ($value, $username, $expire)
	Secure a cookie value.
	_encrypt ($data, $key, $iv)
	Encrypt a given data with a given key and a given initialisation vector.
	_decrypt ($data, $key, $iv)
	Decrypt a given data with a given key and a given initialisation vector.
	_validateIv ($iv)
	Validate Initialization vector.
	_validateKey ($key)
	Validate key.

Protected Attributes
	$_secret = ''
	$_algorithm = MCRYPT_RIJNDAEL_256
	$_mode = MCRYPT_MODE_CBC
	$_cryptModule = null
	$_highConfidentiality = true
	$_ssl = false
	$_cookies = array()

Detailed Description

Slim - a micro PHP 5 framework.

Author: Josh Lockhart info@.nosp@m.josh.nosp@m.lockh.nosp@m.art..nosp@m.com

Copyright: 2011 Josh Lockhart http://www.slimframework.com/license 1.5.0 MIT LICENSE Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Cooke Jar Used to manage signed, encrypted Cookies. Provides: Cookie integrity and authenticity with HMACConfidentiality with symmetric encryptionProtection from replay attack if using SSL or TLSProtection from interception if using SSL or TLS This code was originally called "BigOrNot_CookieManager" and written by Matthieu Huguet released under "CopyLeft" license. I have cleaned up the code formatting to conform with Slim Framework contributor guidelines and added additional code where necessary to play nice with Slim Cookie objects. Requirements: libmcrypt > 2.4.x Matthies Huguet http://bigornot.blogspot.com/2008/06/security-cookies-and-rest.html

Definition at line 54 of file CookieJar.php.

Constructor & Destructor Documentation

Slim_Http_CookieJar::__construct	(	$secret,
		$config = `null`
	)

Constructor.

Initialize cookie manager and mcrypt module.

Parameters

string	$secret	Server's secret key
array	$config

Exceptions

Exception	If secret key is empty
Exception	If unable to open mcypt module

Definition at line 101 of file CookieJar.php.

                                                           {
        if ( empty($secret) ) {
            throw new Exception('You must provide a secret key');
        }
        $this->_secret = $secret;
        if ( $config !== null && !is_array($config) ) {
            throw new Exception('Config must be an array');
        }
        if ( is_array($config) ) {
            if ( isset($config['high_confidentiality']) ) {
                $this->_highConfidentiality = $config['high_confidentiality'];
            }
            if ( isset($config['mcrypt_algorithm']) ) {
                $this->_algorithm = $config['mcrypt_algorithm'];
            }
            if ( isset($config['mcrypt_mode']) ) {
                $this->_mode = $config['mcrypt_mode'];
            }
            if ( isset($config['enable_ssl']) ) {
                $this->_ssl = $config['enable_ssl'];
            }
        }
        if ( extension_loaded('mcrypt') ) {
            $this->_cryptModule = mcrypt_module_open($this->_algorithm, '', $this->_mode, '');
            if ( $this->_cryptModule === false ) {
                throw new Exception('Error while loading mcrypt module');
            }
        }
    }

Member Function Documentation

Slim_Http_CookieJar::_decrypt	(	$data,
		$key,
		$iv
	)

protected

Decrypt a given data with a given key and a given initialisation vector.

Parameters

string	$data	Data to crypt
string	$key	Secret key
string	$iv	Initialisation vector

Returns: string Encrypted data

Definition at line 359 of file CookieJar.php.

References $res, _validateIv(), and _validateKey().

Referenced by getCookieValue().

                                                    {
        $iv = $this->_validateIv($iv);
        $key = $this->_validateKey($key);
        mcrypt_generic_init($this->_cryptModule, $key, $iv);
        $decryptedData = mdecrypt_generic($this->_cryptModule, $data);
        $res = str_replace("\x0", '', $decryptedData);
        mcrypt_generic_deinit($this->_cryptModule);
        return $res;
    }

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Slim_Http_CookieJar::_encrypt	(	$data,
		$key,
		$iv
	)

protected

Encrypt a given data with a given key and a given initialisation vector.

Parameters

string	$data	Data to crypt
string	$key	Secret key
string	$iv	Initialisation vector

Returns: string Encrypted data

Definition at line 342 of file CookieJar.php.

References $res, _validateIv(), and _validateKey().

Referenced by _secureCookieValue().

                                                    {
        $iv = $this->_validateIv($iv);
        $key = $this->_validateKey($key);
        mcrypt_generic_init($this->_cryptModule, $key, $iv);
        $res = @mcrypt_generic($this->_cryptModule, $data);
        mcrypt_generic_deinit($this->_cryptModule);
        return $res;
    }

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Slim_Http_CookieJar::_secureCookieValue	(	$value,
		$username,
		$expire
	)

protected

Secure a cookie value.

The initial value is transformed with this protocol:

Parameters

string	$value	Unsecure value
string	$username	User identifier
integer	$expire	Expiration time

Returns: string Secured value

Definition at line 315 of file CookieJar.php.

References $result, _encrypt(), and getHighConfidentiality().

Referenced by setCookie().

                                                                        {
        if ( is_string($expire) ) {
            $expire = strtotime($expire);
        }
        $key = hash_hmac('sha1', $username . $expire, $this->_secret);
        if ( $value !== '' && $this->getHighConfidentiality() ) {
            $encryptedValue = base64_encode($this->_encrypt($value, $key, md5($expire)));
        } else {
            $encryptedValue = base64_encode($value);
        }
        if ( $this->_ssl && isset($_SERVER['SSL_SESSION_ID']) ) {
            $verifKey = hash_hmac('sha1', $username . $expire . $value . $_SERVER['SSL_SESSION_ID'], $key);
        } else {
            $verifKey = hash_hmac('sha1', $username . $expire . $value, $key);
        }
        $result = array($username, $expire, $encryptedValue, $verifKey);
        return implode('|', $result);
    }

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Slim_Http_CookieJar::_validateIv ( $iv )

protected

Validate Initialization vector.

If given IV is too long for the selected mcrypt algorithm, it will be truncated

Parameters

string $iv Initialization vector

Returns: string

Definition at line 377 of file CookieJar.php.

Referenced by _decrypt(), and _encrypt().

                                        {
        $ivSize = mcrypt_enc_get_iv_size($this->_cryptModule);
        if ( strlen($iv) > $ivSize ) {
            $iv = substr($iv, 0, $ivSize);
        }
        return $iv;
    }

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Slim_Http_CookieJar::_validateKey ( $key )

protected

Validate key.

If given key is too long for the selected mcrypt algorithm, it will be truncated

Parameters

string	$key	key
	string

Definition at line 393 of file CookieJar.php.

Referenced by _decrypt(), and _encrypt().

                                          {
        $keySize = mcrypt_enc_get_key_size($this->_cryptModule);
        if ( strlen($key) > $keySize ) {
            $key = substr($key, 0, $keySize);
        }
        return $key;
    }

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Slim_Http_CookieJar::cookieExists ( $cookiename )

Verify if a cookie exists.

Parameters

string $cookiename

Returns: bool TRUE if cookie exist, or FALSE if not

Definition at line 296 of file CookieJar.php.

References $_COOKIE.

Referenced by getCookieValue().

                                              {
        return isset($_COOKIE[$cookiename]);
    }

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Slim_Http_CookieJar::deleteCookie	(	$name,
		$path = `'/'`,
		$domain = `''`,
		$secure = `false`,
		$httponly = `null`
	)

Delete a cookie.

Parameters

string	$name	Cookie name
string	$path	Cookie path
string	$domain	Cookie domain
bool	$secure	When TRUE, send the cookie only on a secure connection
bool	$httponly	When TRUE the cookie will be made accessible only through the HTTP protocol

Definition at line 221 of file CookieJar.php.

References $path.

Referenced by getCookieValue().

                                                                                                        {
        $expire = 315554400; /* 1980-01-01 */
        $this->_cookies[$name] = new Slim_Http_Cookie($name, '', $expire, $path, $domain, $secure, $httponly);
        //setcookie($name, '', $expire, $path, $domain, $secure, $httponly);
    }

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Slim_Http_CookieJar::getCookieValue	(	$cookiename,
		$deleteIfInvalid = `true`
	)

Get a secure cookie value.

Verify the integrity of cookie data and decrypt it. If the cookie is invalid, it can be automatically destroyed (default behaviour)

Parameters

string	$cookiename	Cookie name
bool	$delete	Destroy the cookie if invalid?

Returns: string|false The Cookie value, or FALSE if Cookie invalid

Definition at line 237 of file CookieJar.php.

References $_COOKIE, _decrypt(), cookieExists(), deleteCookie(), and getHighConfidentiality().

                                                                           {
        if ( $this->cookieExists($cookiename) ) {
            if ( extension_loaded('mcrypt') ) {
                $cookieValues = explode('|', $_COOKIE[$cookiename]);
                if ( (count($cookieValues) === 4) && ($cookieValues[1] == 0 || $cookieValues[1] >= time()) ) {
                    $key = hash_hmac('sha1', $cookieValues[0] . $cookieValues[1], $this->_secret);
                    $cookieData = base64_decode($cookieValues[2]);
                    if ( $cookieData !== '' && $this->getHighConfidentiality() ) {
                        $data = $this->_decrypt($cookieData, $key, md5($cookieValues[1]));
                    } else {
                        $data = $cookieData;
                    }
                    if ( $this->_ssl && isset($_SERVER['SSL_SESSION_ID']) ) {
                        $verifKey = hash_hmac('sha1', $cookieValues[0] . $cookieValues[1] . $data . $_SERVER['SSL_SESSION_ID'], $key);
                    } else {
                        $verifKey = hash_hmac('sha1', $cookieValues[0] . $cookieValues[1] . $data, $key);
                    }
                    if ( $verifKey == $cookieValues[3] ) {
                        return $data;
                    }
                }
            } else {
                return $_COOKIE[$cookiename];
            }
        }
        if ( $deleteIfInvalid ) {
            $this->deleteCookie($cookiename);
        }
        return false;
    }

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Slim_Http_CookieJar::getHighConfidentiality ( )

Get the high confidentiality mode.

Returns: bool TRUE if cookie data encryption is enabled, or FALSE if it isn't

Definition at line 136 of file CookieJar.php.

References $_highConfidentiality.

Referenced by _secureCookieValue(), and getCookieValue().

                                             {
        return $this->_highConfidentiality;
    }

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Slim_Http_CookieJar::getResponseCookie ( $cookiename )

Get Cookie with name for Response.

Author: Josh Lockhart info@.nosp@m.josh.nosp@m.lockh.nosp@m.art..nosp@m.com

Parameters

string $cookiename The name of the Cookie

Returns: Cookie|null Cookie, or NULL if Cookie with name not found

Definition at line 191 of file CookieJar.php.

                                                     {
        return isset($this->_cookies[$cookiename]) ? $this->_cookies[$cookiename] : null;
    }

Slim_Http_CookieJar::getResponseCookies ( )

Get Cookies for Response.

Author: Josh Lockhart info@.nosp@m.josh.nosp@m.lockh.nosp@m.art..nosp@m.com

Returns: array[Cookie]

Definition at line 180 of file CookieJar.php.

References $_cookies.

                                         {
        return $this->_cookies;
    }

Slim_Http_CookieJar::getSSL ( )

Get the SSL status (enabled or disabled?)

Returns: bool TRUE if SSL support is enabled, or FALSE if it isn't

Definition at line 156 of file CookieJar.php.

References $_ssl.

                             {
        return $this->_ssl;
    }

Slim_Http_CookieJar::setClassicCookie	(	$cookiename,
		$value,
		$expire = `0`,
		$path = `'/'`,
		$domain = `''`,
		$secure = `false`,
		$httponly = `null`
	)

Send a classic (unsecure) cookie.

Parameters

string	$name	Cookie name
string	$value	Cookie value
integer	$expire	Expiration time
string	$path	Cookie path
string	$domain	Cookie domain
bool	$secure	When TRUE, send the cookie only on a secure connection
bool	$httponly	When TRUE the cookie will be made accessible only through the HTTP protocol

Definition at line 279 of file CookieJar.php.

References $path.

Referenced by setCookie().

                                                                                                                                       {
        /* httponly option is only available for PHP version >= 5.2 */
        if ( $httponly === null ) {
            $this->_cookies[$cookiename] = new Slim_Http_Cookie($cookiename, $value, $expire, $path, $domain, $secure);
            //setcookie($cookiename, $value, $expire, $path, $domain, $secure);
        } else {
            $this->_cookies[$cookiename] = new Slim_Http_Cookie($cookiename, $value, $expire, $path, $domain, $secure, $httponly);
            //setcookie($cookiename, $value, $expire, $path, $domain, $secure, $httponly);
        }
    }

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Slim_Http_CookieJar::setCookie	(	$cookiename,
		$value,
		$username,
		$expire = `0`,
		$path = `'/'`,
		$domain = `''`,
		$secure = `false`,
		$httponly = `null`
	)

Set a secure cookie.

Parameters

string	$name	Cookie name
string	$value	Cookie value
string	$username	User identifier
integer	$expire	Expiration time
string	$path	Cookie path
string	$domain	Cookie domain
bool	$secure	When TRUE, send the cookie only on a secure connection
bool	$httponly	When TRUE the cookie will be made accessible only through the HTTP protocol

Definition at line 207 of file CookieJar.php.

References $path, _secureCookieValue(), and setClassicCookie().

                                                                                                                                           {
        $secureValue = extension_loaded('mcrypt') ? $this->_secureCookieValue($value, $username, $expire) : $value;
        $this->setClassicCookie($cookiename, $secureValue, $expire, $path, $domain, $secure, $httponly);
    }

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Slim_Http_CookieJar::setHighConfidentiality ( $enable )

Enable or disable cookie data encryption.

Parameters

bool $enable TRUE to enable, FALSE to disable

Returns: CookieJar

Definition at line 146 of file CookieJar.php.

                                                      {
        $this->_highConfidentiality = (bool)$enable;
        return $this;
    }

Slim_Http_CookieJar::setSSL ( $enable )

Enable SSL support (not enabled by default)

Pro: Protect against replay attack Con: Cookie's lifetime is limited to SSL session's lifetime

Parameters

bool $enable TRUE to enable, FALSE to disable

Returns: CookieJar

Definition at line 169 of file CookieJar.php.

                                      {
        $this->_ssl = (bool)$enable;
        return $this;
    }

Field Documentation

Slim_Http_CookieJar::$_algorithm = MCRYPT_RIJNDAEL_256

protected

Definition at line 64 of file CookieJar.php.

Slim_Http_CookieJar::$_cookies = array()

protected

Definition at line 89 of file CookieJar.php.

Referenced by getResponseCookies().

Slim_Http_CookieJar::$_cryptModule = null

protected

Definition at line 74 of file CookieJar.php.

Slim_Http_CookieJar::$_highConfidentiality = true

protected

Definition at line 79 of file CookieJar.php.

Referenced by getHighConfidentiality().

Slim_Http_CookieJar::$_mode = MCRYPT_MODE_CBC

protected

Definition at line 69 of file CookieJar.php.

Slim_Http_CookieJar::$_secret = ''

protected

Definition at line 59 of file CookieJar.php.

Slim_Http_CookieJar::$_ssl = false

protected

Definition at line 84 of file CookieJar.php.

Referenced by getSSL().

The documentation for this class was generated from the following file:

Services/WebServices/Rest/lib/Slim/Http/CookieJar.php

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation