<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Oauth

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Config.php 22662 2010-07-24 17:37:36Z mabe $

 */

/** Zend_Oauth */

require_once 'Zend/Oauth.php';

/** Zend_Uri */

require_once 'Zend/Uri.php';

/** Zend_Oauth_Config_Interface */

require_once 'Zend/Oauth/Config/ConfigInterface.php';

/**

 * @category   Zend

 * @package    Zend_Oauth

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Oauth_Config implements Zend_Oauth_Config_ConfigInterface

{

    /**

     * Signature method used when signing all parameters for an HTTP request

     *

     * @var string

     */

    protected $_signatureMethod = 'HMAC-SHA1';

    /**

     * Three request schemes are defined by OAuth, of which passing

     * all OAuth parameters by Header is preferred. The other two are

     * POST Body and Query String.

     *

     * @var string

     */

    protected $_requestScheme = Zend_Oauth::REQUEST_SCHEME_HEADER;

    /**

     * Preferred request Method - one of GET or POST - which Zend_Oauth

     * will enforce as standard throughout the library. Generally a default

     * of POST works fine unless a Provider specifically requires otherwise.

     *

     * @var string

     */

    protected $_requestMethod = Zend_Oauth::POST;

    /**

     * OAuth Version; This defaults to 1.0 - Must not be changed!

     *

     * @var string

     */

    protected $_version = '1.0';

    /**

     * This optional value is used to define where the user is redirected to

     * after authorizing a Request Token from an OAuth Providers website.

     * It's optional since a Provider may ask for this to be defined in advance

     * when registering a new application for a Consumer Key.

     *

     * @var string

     */

    protected $_callbackUrl = null;

    /**

     * The URL root to append default OAuth endpoint paths.

     *

     * @var string

     */

    protected $_siteUrl = null;

    /**

     * The URL to which requests for a Request Token should be directed.

     * When absent, assumed siteUrl+'/request_token'

     *

     * @var string

     */

    protected $_requestTokenUrl = null;

    /**

     * The URL to which requests for an Access Token should be directed.

     * When absent, assumed siteUrl+'/access_token'

     *

     * @var string

     */

    protected $_accessTokenUrl = null;

    /**

     * The URL to which users should be redirected to authorize a Request Token.

     * When absent, assumed siteUrl+'/authorize'

     *

     * @var string

     */

    protected $_authorizeUrl = null;

    /**

     * An OAuth application's Consumer Key.

     *

     * @var string

     */

    protected $_consumerKey = null;

    /**

     * Every Consumer Key has a Consumer Secret unless you're in RSA-land.

     *

     * @var string

     */

    protected $_consumerSecret = null;

    /**

     * If relevant, a PEM encoded RSA private key encapsulated as a

     * Zend_Crypt_Rsa Key

     *

     * @var Zend_Crypt_Rsa_Key_Private

     */

    protected $_rsaPrivateKey = null;

    /**

     * If relevant, a PEM encoded RSA public key encapsulated as a

     * Zend_Crypt_Rsa Key

     *

     * @var Zend_Crypt_Rsa_Key_Public

     */

    protected $_rsaPublicKey = null;

    /**

     * Generally this will nearly always be an Access Token represented as a

     * Zend_Oauth_Token_Access object.

     *

     * @var Zend_Oauth_Token

     */

    protected $_token = null;

    /**

     * Constructor; create a new object with an optional array|Zend_Config

     * instance containing initialising options.

     *

     * @param  array|Zend_Config $options

     * @return void

     */

    public function __construct($options = null)

    {

        if ($options !== null) {

            if ($options instanceof Zend_Config) {

                $options = $options->toArray();

            }

            $this->setOptions($options);

        }

    }

    /**

     * Parse option array or Zend_Config instance and setup options using their

     * relevant mutators.

     *

     * @param  array|Zend_Config $options

     * @return Zend_Oauth_Config

     */

    public function setOptions(array $options)

    {

        foreach ($options as $key => $value) {

            switch ($key) {

                case 'consumerKey':

                    $this->setConsumerKey($value);

                    break;

                case 'consumerSecret':

                    $this->setConsumerSecret($value);

                    break;

                case 'signatureMethod':

                    $this->setSignatureMethod($value);

                    break;

                case 'version':

                    $this->setVersion($value);

                    break;

                case 'callbackUrl':

                    $this->setCallbackUrl($value);

                    break;

                case 'siteUrl':

                    $this->setSiteUrl($value);

                    break;

                case 'requestTokenUrl':

                    $this->setRequestTokenUrl($value);

                    break;

                case 'accessTokenUrl':

                    $this->setAccessTokenUrl($value);

                    break;

                case 'userAuthorizationUrl':

                    $this->setUserAuthorizationUrl($value);

                    break;

                case 'authorizeUrl':

                    $this->setAuthorizeUrl($value);

                    break;

                case 'requestMethod':

                    $this->setRequestMethod($value);

                    break;

                case 'rsaPrivateKey':

                    $this->setRsaPrivateKey($value);

                    break;

                case 'rsaPublicKey':

                    $this->setRsaPublicKey($value);

                    break;

            }

        }

        if (isset($options['requestScheme'])) {

            $this->setRequestScheme($options['requestScheme']);

        }

        return $this;

    }

    /**

     * Set consumer key

     *

     * @param  string $key

     * @return Zend_Oauth_Config

     */

    public function setConsumerKey($key)

    {

        $this->_consumerKey = $key;

        return $this;

    }

    /**

     * Get consumer key

     *

     * @return string

     */

    public function getConsumerKey()

    {

        return $this->_consumerKey;

    }

    /**

     * Set consumer secret

     *

     * @param  string $secret

     * @return Zend_Oauth_Config

     */

    public function setConsumerSecret($secret)

    {

        $this->_consumerSecret = $secret;

        return $this;

    }

    /**

     * Get consumer secret

     *

     * Returns RSA private key if set; otherwise, returns any previously set 

     * consumer secret.

     *

     * @return string

     */

    public function getConsumerSecret()

    {

        if ($this->_rsaPrivateKey !== null) {

            return $this->_rsaPrivateKey;

        }

        return $this->_consumerSecret;

    }

    /**

     * Set signature method

     *

     * @param  string $method

     * @return Zend_Oauth_Config

     * @throws Zend_Oauth_Exception if unsupported signature method specified

     */

    public function setSignatureMethod($method)

    {

        $method = strtoupper($method);

        if (!in_array($method, array(

                'HMAC-SHA1', 'HMAC-SHA256', 'RSA-SHA1', 'PLAINTEXT'

            ))

        ) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception('Unsupported signature method: '

                . $method

                . '. Supported are HMAC-SHA1, RSA-SHA1, PLAINTEXT and HMAC-SHA256');

        }

        $this->_signatureMethod = $method;;

        return $this;

    }

    /**

     * Get signature method

     *

     * @return string

     */

    public function getSignatureMethod()

    {

        return $this->_signatureMethod;

    }

    /**

     * Set request scheme

     *

     * @param  string $scheme

     * @return Zend_Oauth_Config

     * @throws Zend_Oauth_Exception if invalid scheme specified, or if POSTBODY set when request method of GET is specified

     */

    public function setRequestScheme($scheme)

    {

        $scheme = strtolower($scheme);

        if (!in_array($scheme, array(

                Zend_Oauth::REQUEST_SCHEME_HEADER,

                Zend_Oauth::REQUEST_SCHEME_POSTBODY,

                Zend_Oauth::REQUEST_SCHEME_QUERYSTRING,

            ))

        ) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception(

                '\'' . $scheme . '\' is an unsupported request scheme'

            );

        }

        if ($scheme == Zend_Oauth::REQUEST_SCHEME_POSTBODY

            && $this->getRequestMethod() == Zend_Oauth::GET

        ) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception(

                'Cannot set POSTBODY request method if HTTP method set to GET'

            );

        }

        $this->_requestScheme = $scheme;

        return $this;

    }

    /**

     * Get request scheme

     *

     * @return string

     */

    public function getRequestScheme()

    {

        return $this->_requestScheme;

    }

    /**

     * Set version

     *

     * @param  string $version

     * @return Zend_Oauth_Config

     */

    public function setVersion($version)

    {

        $this->_version = $version;

        return $this;

    }

    /**

     * Get version

     *

     * @return string

     */

    public function getVersion()

    {

        return $this->_version;

    }

    /**

     * Set callback URL

     *

     * @param  string $url

     * @return Zend_Oauth_Config

     * @throws Zend_Oauth_Exception for invalid URLs

     */

    public function setCallbackUrl($url)

    {

        if (!Zend_Uri::check($url)) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception(

                '\'' . $url . '\' is not a valid URI'

            );

        }

        $this->_callbackUrl = $url;

        return $this;

    }

    /**

     * Get callback URL

     *

     * @return string

     */

    public function getCallbackUrl()

    {

        return $this->_callbackUrl;

    }

    /**

     * Set site URL

     *

     * @param  string $url

     * @return Zend_Oauth_Config

     * @throws Zend_Oauth_Exception for invalid URLs

     */

    public function setSiteUrl($url)

    {

        if (!Zend_Uri::check($url)) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception(

                '\'' . $url . '\' is not a valid URI'

            );

        }

        $this->_siteUrl = $url;

        return $this;

    }

    /**

     * Get site URL

     *

     * @return string

     */

    public function getSiteUrl()

    {

        return $this->_siteUrl;

    }

    /**

     * Set request token URL

     *

     * @param  string $url

     * @return Zend_Oauth_Config

     * @throws Zend_Oauth_Exception for invalid URLs

     */

    public function setRequestTokenUrl($url)

    {

        if (!Zend_Uri::check($url)) {

            require_once 'Zend/Oauth/Exception.php';

            throw new Zend_Oauth_Exception(

                '\'' . $url . '\' is not a valid URI'

            );

        }

        $this->_requestTokenUrl = rtrim($url, '/');

        return $this;

    }

    /**

     * Get request token URL

     *

     * If no request token URL has been set, but a site URL has, returns the 

     * site URL with the string "/request_token" appended.

     *

     * @return string

     */

    public function getRequestTokenUrl()

    {

        if (!$this->_requestTokenUrl && $this->_siteUrl) {

            return $this->_siteUrl . '/request_token';

        }