diff options
Diffstat (limited to 'library')
| -rw-r--r-- | library/OAuth1.php | 874 | ||||
| -rw-r--r-- | library/slinky.php | 704 | ||||
| -rw-r--r-- | library/twitteroauth.php | 245 |
3 files changed, 1823 insertions, 0 deletions
diff --git a/library/OAuth1.php b/library/OAuth1.php new file mode 100644 index 000000000..67a94c479 --- /dev/null +++ b/library/OAuth1.php @@ -0,0 +1,874 @@ +<?php +// vim: foldmethod=marker + +/* Generic exception class + */ +class OAuthException extends Exception { + // pass +} + +class OAuthConsumer { + public $key; + public $secret; + + function __construct($key, $secret, $callback_url=NULL) { + $this->key = $key; + $this->secret = $secret; + $this->callback_url = $callback_url; + } + + function __toString() { + return "OAuthConsumer[key=$this->key,secret=$this->secret]"; + } +} + +class OAuthToken { + // access tokens and request tokens + public $key; + public $secret; + + /** + * key = the token + * secret = the token secret + */ + function __construct($key, $secret) { + $this->key = $key; + $this->secret = $secret; + } + + /** + * generates the basic string serialization of a token that a server + * would respond to request_token and access_token calls with + */ + function to_string() { + return "oauth_token=" . + OAuthUtil::urlencode_rfc3986($this->key) . + "&oauth_token_secret=" . + OAuthUtil::urlencode_rfc3986($this->secret); + } + + function __toString() { + return $this->to_string(); + } +} + +/** + * A class for implementing a Signature Method + * See section 9 ("Signing Requests") in the spec + */ +abstract class OAuthSignatureMethod { + /** + * Needs to return the name of the Signature Method (ie HMAC-SHA1) + * @return string + */ + abstract public function get_name(); + + /** + * Build up the signature + * NOTE: The output of this function MUST NOT be urlencoded. + * the encoding is handled in OAuthRequest when the final + * request is serialized + * @param OAuthRequest $request + * @param OAuthConsumer $consumer + * @param OAuthToken $token + * @return string + */ + abstract public function build_signature($request, $consumer, $token); + + /** + * Verifies that a given signature is correct + * @param OAuthRequest $request + * @param OAuthConsumer $consumer + * @param OAuthToken $token + * @param string $signature + * @return bool + */ + public function check_signature($request, $consumer, $token, $signature) { + $built = $this->build_signature($request, $consumer, $token); + return $built == $signature; + } +} + +/** + * The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104] + * where the Signature Base String is the text and the key is the concatenated values (each first + * encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&' + * character (ASCII code 38) even if empty. + * - Chapter 9.2 ("HMAC-SHA1") + */ +class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod { + function get_name() { + return "HMAC-SHA1"; + } + + public function build_signature($request, $consumer, $token) { + $base_string = $request->get_signature_base_string(); + $request->base_string = $base_string; + + $key_parts = array( + $consumer->secret, + ($token) ? $token->secret : "" + ); + + $key_parts = OAuthUtil::urlencode_rfc3986($key_parts); + $key = implode('&', $key_parts); + + return base64_encode(hash_hmac('sha1', $base_string, $key, true)); + } +} + +/** + * The PLAINTEXT method does not provide any security protection and SHOULD only be used + * over a secure channel such as HTTPS. It does not use the Signature Base String. + * - Chapter 9.4 ("PLAINTEXT") + */ +class OAuthSignatureMethod_PLAINTEXT extends OAuthSignatureMethod { + public function get_name() { + return "PLAINTEXT"; + } + + /** + * oauth_signature is set to the concatenated encoded values of the Consumer Secret and + * Token Secret, separated by a '&' character (ASCII code 38), even if either secret is + * empty. The result MUST be encoded again. + * - Chapter 9.4.1 ("Generating Signatures") + * + * Please note that the second encoding MUST NOT happen in the SignatureMethod, as + * OAuthRequest handles this! + */ + public function build_signature($request, $consumer, $token) { + $key_parts = array( + $consumer->secret, + ($token) ? $token->secret : "" + ); + + $key_parts = OAuthUtil::urlencode_rfc3986($key_parts); + $key = implode('&', $key_parts); + $request->base_string = $key; + + return $key; + } +} + +/** + * The RSA-SHA1 signature method uses the RSASSA-PKCS1-v1_5 signature algorithm as defined in + * [RFC3447] section 8.2 (more simply known as PKCS#1), using SHA-1 as the hash function for + * EMSA-PKCS1-v1_5. It is assumed that the Consumer has provided its RSA public key in a + * verified way to the Service Provider, in a manner which is beyond the scope of this + * specification. + * - Chapter 9.3 ("RSA-SHA1") + */ +abstract class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod { + public function get_name() { + return "RSA-SHA1"; + } + + // Up to the SP to implement this lookup of keys. Possible ideas are: + // (1) do a lookup in a table of trusted certs keyed off of consumer + // (2) fetch via http using a url provided by the requester + // (3) some sort of specific discovery code based on request + // + // Either way should return a string representation of the certificate + protected abstract function fetch_public_cert(&$request); + + // Up to the SP to implement this lookup of keys. Possible ideas are: + // (1) do a lookup in a table of trusted certs keyed off of consumer + // + // Either way should return a string representation of the certificate + protected abstract function fetch_private_cert(&$request); + + public function build_signature($request, $consumer, $token) { + $base_string = $request->get_signature_base_string(); + $request->base_string = $base_string; + + // Fetch the private key cert based on the request + $cert = $this->fetch_private_cert($request); + + // Pull the private key ID from the certificate + $privatekeyid = openssl_get_privatekey($cert); + + // Sign using the key + $ok = openssl_sign($base_string, $signature, $privatekeyid); + + // Release the key resource + openssl_free_key($privatekeyid); + + return base64_encode($signature); + } + + public function check_signature($request, $consumer, $token, $signature) { + $decoded_sig = base64_decode($signature); + + $base_string = $request->get_signature_base_string(); + + // Fetch the public key cert based on the request + $cert = $this->fetch_public_cert($request); + + // Pull the public key ID from the certificate + $publickeyid = openssl_get_publickey($cert); + + // Check the computed signature against the one passed in the query + $ok = openssl_verify($base_string, $decoded_sig, $publickeyid); + + // Release the key resource + openssl_free_key($publickeyid); + + return $ok == 1; + } +} + +class OAuthRequest { + private $parameters; + private $http_method; + private $http_url; + // for debug purposes + public $base_string; + public static $version = '1.0'; + public static $POST_INPUT = 'php://input'; + + function __construct($http_method, $http_url, $parameters=NULL) { + @$parameters or $parameters = array(); + $parameters = array_merge( OAuthUtil::parse_parameters(parse_url($http_url, PHP_URL_QUERY)), $parameters); + $this->parameters = $parameters; + $this->http_method = $http_method; + $this->http_url = $http_url; + } + + + /** + * attempt to build up a request from what was passed to the server + */ + public static function from_request($http_method=NULL, $http_url=NULL, $parameters=NULL) { + $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != "on") + ? 'http' + : 'https'; + @$http_url or $http_url = $scheme . + '://' . $_SERVER['HTTP_HOST'] . + ':' . + $_SERVER['SERVER_PORT'] . + $_SERVER['REQUEST_URI']; + @$http_method or $http_method = $_SERVER['REQUEST_METHOD']; + + // We weren't handed any parameters, so let's find the ones relevant to + // this request. + // If you run XML-RPC or similar you should use this to provide your own + // parsed parameter-list + if (!$parameters) { + // Find request headers + $request_headers = OAuthUtil::get_headers(); + + // Parse the query-string to find GET parameters + $parameters = OAuthUtil::parse_parameters($_SERVER['QUERY_STRING']); + + // It's a POST request of the proper content-type, so parse POST + // parameters and add those overriding any duplicates from GET + if ($http_method == "POST" + && @strstr($request_headers["Content-Type"], + "application/x-www-form-urlencoded") + ) { + $post_data = OAuthUtil::parse_parameters( + file_get_contents(self::$POST_INPUT) + ); + $parameters = array_merge($parameters, $post_data); + } + + // We have a Authorization-header with OAuth data. Parse the header + // and add those overriding any duplicates from GET or POST + if (@substr($request_headers['Authorization'], 0, 6) == "OAuth ") { + $header_parameters = OAuthUtil::split_header( + $request_headers['Authorization'] + ); + $parameters = array_merge($parameters, $header_parameters); + } + + } + + return new OAuthRequest($http_method, $http_url, $parameters); + } + + /** + * pretty much a helper function to set up the request + */ + public static function from_consumer_and_token($consumer, $token, $http_method, $http_url, $parameters=NULL) { + @$parameters or $parameters = array(); + $defaults = array("oauth_version" => OAuthRequest::$version, + "oauth_nonce" => OAuthRequest::generate_nonce(), + "oauth_timestamp" => OAuthRequest::generate_timestamp(), + "oauth_consumer_key" => $consumer->key); + if ($token) + $defaults['oauth_token'] = $token->key; + + $parameters = array_merge($defaults, $parameters); + + return new OAuthRequest($http_method, $http_url, $parameters); + } + + public function set_parameter($name, $value, $allow_duplicates = true) { + if ($allow_duplicates && isset($this->parameters[$name])) { + // We have already added parameter(s) with this name, so add to the list + if (is_scalar($this->parameters[$name])) { + // This is the first duplicate, so transform scalar (string) + // into an array so we can add the duplicates + $this->parameters[$name] = array($this->parameters[$name]); + } + + $this->parameters[$name][] = $value; + } else { + $this->parameters[$name] = $value; + } + } + + public function get_parameter($name) { + return isset($this->parameters[$name]) ? $this->parameters[$name] : null; + } + + public function get_parameters() { + return $this->parameters; + } + + public function unset_parameter($name) { + unset($this->parameters[$name]); + } + + /** + * The request parameters, sorted and concatenated into a normalized string. + * @return string + */ + public function get_signable_parameters() { + // Grab all parameters + $params = $this->parameters; + + // Remove oauth_signature if present + // Ref: Spec: 9.1.1 ("The oauth_signature parameter MUST be excluded.") + if (isset($params['oauth_signature'])) { + unset($params['oauth_signature']); + } + + return OAuthUtil::build_http_query($params); + } + + /** + * Returns the base string of this request + * + * The base string defined as the method, the url + * and the parameters (normalized), each urlencoded + * and the concated with &. + */ + public function get_signature_base_string() { + $parts = array( + $this->get_normalized_http_method(), + $this->get_normalized_http_url(), + $this->get_signable_parameters() + ); + + $parts = OAuthUtil::urlencode_rfc3986($parts); + + return implode('&', $parts); + } + + /** + * just uppercases the http method + */ + public function get_normalized_http_method() { + return strtoupper($this->http_method); + } + + /** + * parses the url and rebuilds it to be + * scheme://host/path + */ + public function get_normalized_http_url() { + $parts = parse_url($this->http_url); + + $port = @$parts['port']; + $scheme = $parts['scheme']; + $host = $parts['host']; + $path = @$parts['path']; + + $port or $port = ($scheme == 'https') ? '443' : '80'; + + if (($scheme == 'https' && $port != '443') + || ($scheme == 'http' && $port != '80')) { + $host = "$host:$port"; + } + return "$scheme://$host$path"; + } + + /** + * builds a url usable for a GET request + */ + public function to_url() { + $post_data = $this->to_postdata(); + $out = $this->get_normalized_http_url(); + if ($post_data) { + $out .= '?'.$post_data; + } + return $out; + } + + /** + * builds the data one would send in a POST request + */ + public function to_postdata() { + return OAuthUtil::build_http_query($this->parameters); + } + + /** + * builds the Authorization: header + */ + public function to_header($realm=null) { + $first = true; + if($realm) { + $out = 'Authorization: OAuth realm="' . OAuthUtil::urlencode_rfc3986($realm) . '"'; + $first = false; + } else + $out = 'Authorization: OAuth'; + + $total = array(); + foreach ($this->parameters as $k => $v) { + if (substr($k, 0, 5) != "oauth") continue; + if (is_array($v)) { + throw new OAuthException('Arrays not supported in headers'); + } + $out .= ($first) ? ' ' : ','; + $out .= OAuthUtil::urlencode_rfc3986($k) . + '="' . + OAuthUtil::urlencode_rfc3986($v) . + '"'; + $first = false; + } + return $out; + } + + public function __toString() { + return $this->to_url(); + } + + + public function sign_request($signature_method, $consumer, $token) { + $this->set_parameter( + "oauth_signature_method", + $signature_method->get_name(), + false + ); + $signature = $this->build_signature($signature_method, $consumer, $token); + $this->set_parameter("oauth_signature", $signature, false); + } + + public function build_signature($signature_method, $consumer, $token) { + $signature = $signature_method->build_signature($this, $consumer, $token); + return $signature; + } + + /** + * util function: current timestamp + */ + private static function generate_timestamp() { + return time(); + } + + /** + * util function: current nonce + */ + private static function generate_nonce() { + $mt = microtime(); + $rand = mt_rand(); + + return md5($mt . $rand); // md5s look nicer than numbers + } +} + +class OAuthServer { + protected $timestamp_threshold = 300; // in seconds, five minutes + protected $version = '1.0'; // hi blaine + protected $signature_methods = array(); + + protected $data_store; + + function __construct($data_store) { + $this->data_store = $data_store; + } + + public function add_signature_method($signature_method) { + $this->signature_methods[$signature_method->get_name()] = + $signature_method; + } + + // high level functions + + /** + * process a request_token request + * returns the request token on success + */ + public function fetch_request_token(&$request) { + $this->get_version($request); + + $consumer = $this->get_consumer($request); + + // no token required for the initial token request + $token = NULL; + + $this->check_signature($request, $consumer, $token); + + // Rev A change + $callback = $request->get_parameter('oauth_callback'); + $new_token = $this->data_store->new_request_token($consumer, $callback); + + return $new_token; + } + + /** + * process an access_token request + * returns the access token on success + */ + public function fetch_access_token(&$request) { + $this->get_version($request); + + $consumer = $this->get_consumer($request); + + // requires authorized request token + $token = $this->get_token($request, $consumer, "request"); + + $this->check_signature($request, $consumer, $token); + + // Rev A change + $verifier = $request->get_parameter('oauth_verifier'); + $new_token = $this->data_store->new_access_token($token, $consumer, $verifier); + + return $new_token; + } + + /** + * verify an api call, checks all the parameters + */ + public function verify_request(&$request) { + $this->get_version($request); + $consumer = $this->get_consumer($request); + $token = $this->get_token($request, $consumer, "access"); + $this->check_signature($request, $consumer, $token); + return array($consumer, $token); + } + + // Internals from here + /** + * version 1 + */ + private function get_version(&$request) { + $version = $request->get_parameter("oauth_version"); + if (!$version) { + // Service Providers MUST assume the protocol version to be 1.0 if this parameter is not present. + // Chapter 7.0 ("Accessing Protected Ressources") + $version = '1.0'; + } + if ($version !== $this->version) { + throw new OAuthException("OAuth version '$version' not supported"); + } + return $version; + } + + /** + * figure out the signature with some defaults + */ + private function get_signature_method(&$request) { + $signature_method = + @$request->get_parameter("oauth_signature_method"); + + if (!$signature_method) { + // According to chapter 7 ("Accessing Protected Ressources") the signature-method + // parameter is required, and we can't just fallback to PLAINTEXT + throw new OAuthException('No signature method parameter. This parameter is required'); + } + + if (!in_array($signature_method, + array_keys($this->signature_methods))) { + throw new OAuthException( + "Signature method '$signature_method' not supported " . + "try one of the following: " . + implode(", ", array_keys($this->signature_methods)) + ); + } + return $this->signature_methods[$signature_method]; + } + + /** + * try to find the consumer for the provided request's consumer key + */ + private function get_consumer(&$request) { + $consumer_key = @$request->get_parameter("oauth_consumer_key"); + if (!$consumer_key) { + throw new OAuthException("Invalid consumer key"); + } + + $consumer = $this->data_store->lookup_consumer($consumer_key); + if (!$consumer) { + throw new OAuthException("Invalid consumer"); + } + + return $consumer; + } + + /** + * try to find the token for the provided request's token key + */ + private function get_token(&$request, $consumer, $token_type="access") { + $token_field = @$request->get_parameter('oauth_token'); + $token = $this->data_store->lookup_token( + $consumer, $token_type, $token_field + ); + if (!$token) { + throw new OAuthException("Invalid $token_type token: $token_field"); + } + return $token; + } + + /** + * all-in-one function to check the signature on a request + * should guess the signature method appropriately + */ + private function check_signature(&$request, $consumer, $token) { + // this should probably be in a different method + $timestamp = @$request->get_parameter('oauth_timestamp'); + $nonce = @$request->get_parameter('oauth_nonce'); + + $this->check_timestamp($timestamp); + $this->check_nonce($consumer, $token, $nonce, $timestamp); + + $signature_method = $this->get_signature_method($request); + + $signature = $request->get_parameter('oauth_signature'); + $valid_sig = $signature_method->check_signature( + $request, + $consumer, + $token, + $signature + ); + + if (!$valid_sig) { + throw new OAuthException("Invalid signature"); + } + } + + /** + * check that the timestamp is new enough + */ + private function check_timestamp($timestamp) { + if( ! $timestamp ) + throw new OAuthException( + 'Missing timestamp parameter. The parameter is required' + ); + + // verify that timestamp is recentish + $now = time(); + if (abs($now - $timestamp) > $this->timestamp_threshold) { + throw new OAuthException( + "Expired timestamp, yours $timestamp, ours $now" + ); + } + } + + /** + * check that the nonce is not repeated + */ + private function check_nonce($consumer, $token, $nonce, $timestamp) { + if( ! $nonce ) + throw new OAuthException( + 'Missing nonce parameter. The parameter is required' + ); + + // verify that the nonce is uniqueish + $found = $this->data_store->lookup_nonce( + $consumer, + $token, + $nonce, + $timestamp + ); + if ($found) { + throw new OAuthException("Nonce already used: $nonce"); + } + } + +} + +class OAuthDataStore { + function lookup_consumer($consumer_key) { + // implement me + } + + function lookup_token($consumer, $token_type, $token) { + // implement me + } + + function lookup_nonce($consumer, $token, $nonce, $timestamp) { + // implement me + } + + function new_request_token($consumer, $callback = null) { + // return a new token attached to this consumer + } + + function new_access_token($token, $consumer, $verifier = null) { + // return a new access token attached to this consumer + // for the user associated with this token if the request token + // is authorized + // should also invalidate the request token + } + +} + +class OAuthUtil { + public static function urlencode_rfc3986($input) { + if (is_array($input)) { + return array_map(array('OAuthUtil', 'urlencode_rfc3986'), $input); + } else if (is_scalar($input)) { + return str_replace( + '+', + ' ', + str_replace('%7E', '~', rawurlencode($input)) + ); + } else { + return ''; + } +} + + + // This decode function isn't taking into consideration the above + // modifications to the encoding process. However, this method doesn't + // seem to be used anywhere so leaving it as is. + public static function urldecode_rfc3986($string) { + return urldecode($string); + } + + // Utility function for turning the Authorization: header into + // parameters, has to do some unescaping + // Can filter out any non-oauth parameters if needed (default behaviour) + public static function split_header($header, $only_allow_oauth_parameters = true) { + $pattern = '/(([-_a-z]*)=("([^"]*)"|([^,]*)),?)/'; + $offset = 0; + $params = array(); + while (preg_match($pattern, $header, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) { + $match = $matches[0]; + $header_name = $matches[2][0]; + $header_content = (isset($matches[5])) ? $matches[5][0] : $matches[4][0]; + if (preg_match('/^oauth_/', $header_name) || !$only_allow_oauth_parameters) { + $params[$header_name] = OAuthUtil::urldecode_rfc3986($header_content); + } + $offset = $match[1] + strlen($match[0]); + } + + if (isset($params['realm'])) { + unset($params['realm']); + } + + return $params; + } + + // helper to try to sort out headers for people who aren't running apache + public static function get_headers() { + if (function_exists('apache_request_headers')) { + // we need this to get the actual Authorization: header + // because apache tends to tell us it doesn't exist + $headers = apache_request_headers(); + + // sanitize the output of apache_request_headers because + // we always want the keys to be Cased-Like-This and arh() + // returns the headers in the same case as they are in the + // request + $out = array(); + foreach( $headers AS $key => $value ) { + $key = str_replace( + " ", + "-", + ucwords(strtolower(str_replace("-", " ", $key))) + ); + $out[$key] = $value; + } + } else { + // otherwise we don't have apache and are just going to have to hope + // that $_SERVER actually contains what we need + $out = array(); + if( isset($_SERVER['CONTENT_TYPE']) ) + $out['Content-Type'] = $_SERVER['CONTENT_TYPE']; + if( isset($_ENV['CONTENT_TYPE']) ) + $out['Content-Type'] = $_ENV['CONTENT_TYPE']; + + foreach ($_SERVER as $key => $value) { + if (substr($key, 0, 5) == "HTTP_") { + // this is chaos, basically it is just there to capitalize the first + // letter of every word that is not an initial HTTP and strip HTTP + // code from przemek + $key = str_replace( + " ", + "-", + ucwords(strtolower(str_replace("_", " ", substr($key, 5)))) + ); + $out[$key] = $value; + } + } + } + return $out; + } + + // This function takes a input like a=b&a=c&d=e and returns the parsed + // parameters like this + // array('a' => array('b','c'), 'd' => 'e') + public static function parse_parameters( $input ) { + if (!isset($input) || !$input) return array(); + + $pairs = explode('&', $input); + + $parsed_parameters = array(); + foreach ($pairs as $pair) { + $split = explode('=', $pair, 2); + $parameter = OAuthUtil::urldecode_rfc3986($split[0]); + $value = isset($split[1]) ? OAuthUtil::urldecode_rfc3986($split[1]) : ''; + + if (isset($parsed_parameters[$parameter])) { + // We have already recieved parameter(s) with this name, so add to the list + // of parameters with this name + + if (is_scalar($parsed_parameters[$parameter])) { + // This is the first duplicate, so transform scalar (string) into an array + // so we can add the duplicates + $parsed_parameters[$parameter] = array($parsed_parameters[$parameter]); + } + + $parsed_parameters[$parameter][] = $value; + } else { + $parsed_parameters[$parameter] = $value; + } + } + return $parsed_parameters; + } + + public static function build_http_query($params) { + if (!$params) return ''; + + // Urlencode both keys and values + $keys = OAuthUtil::urlencode_rfc3986(array_keys($params)); + $values = OAuthUtil::urlencode_rfc3986(array_values($params)); + $params = array_combine($keys, $values); + + // Parameters are sorted by name, using lexicographical byte value ordering. + // Ref: Spec: 9.1.1 (1) + uksort($params, 'strcmp'); + + $pairs = array(); + foreach ($params as $parameter => $value) { + if (is_array($value)) { + // If two or more parameters share the same name, they are sorted by their value + // Ref: Spec: 9.1.1 (1) + natsort($value); + foreach ($value as $duplicate_value) { + $pairs[] = $parameter . '=' . $duplicate_value; + } + } else { + $pairs[] = $parameter . '=' . $value; + } + } + // For each parameter, the name is separated from the corresponding value by an '=' character (ASCII code 61) + // Each name-value pair is separated by an '&' character (ASCII code 38) + return implode('&', $pairs); + } +} + +?> diff --git a/library/slinky.php b/library/slinky.php new file mode 100644 index 000000000..51432c3f5 --- /dev/null +++ b/library/slinky.php @@ -0,0 +1,704 @@ +<?php +/* +Copyright (c) 2009, Beau Lebens +All rights reserved. + +Redistribution and use in source and binary forms, with or without modification, +are permitted provided that the following conditions are met: + + - Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + - Neither the name of Dented Reality nor the names of the authors may be used + to endorse or promote products derived from this software without specific + prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + +// Return options for Slinky_Service->url_get() and ->url_post() +define( 'SLINKY_BODY', 1 ); // Default +define( 'SLINKY_HEADERS', 2 ); // Not implemented yet +define( 'SLINKY_FINAL_URL', 3 ); // Default for lengthening URLs + +// So that services may decide what to do with us +define( 'SLINKY_USER_AGENT', 'Slinky v1.0 +http://dentedreality.com.au/projects/slinky/' ); + +// How many seconds until remote requests should be cut? +define( 'SLINKY_TIMEOUT', 10 ); + +/** + * Slinky allows you to go back and forth between "long" and shortened URLs + * using popular URL shortening services. + * + * Slinky assumes you have cURL installed and working, and requires the JSON + * extension installed if you're working with a service that uses JSON. + * + * Slinky will ONLY work with PHP5+ + * + * It supports some of the more popular services, with easy extensibility for + * adding your own relatively easily. It defaults to using TinyURL + * for shortening URLs. If you want to use some of the other services, you need + * to set some configuration options before actually shortening/lengthening + * URLs. I'd strongly suggest that you cache results using memcached, a local + * DB or whatever to avoid having to hit APIs etc every time you encounter a + * URL. + * + * Slinky supports shortening, and auto-detection (for lengthening URLs) + * using these services: + * - Bit.ly + * - Tr.im + * - TinyURL + * - Is.Gd + * - Fon.gs + * - Micurl.com + * - ur1.ca + * - Ptiturl + * - Tighturl + * - 2tu.us + * - Snipr / Snipurl / Snurl.com / Sn.im + * + * + * To use Slinky: + * + * $slinky = new Slinky( 'http://dentedreality.com.au/' ); + * - Creates a new Slinky instance, will default to using TinyURL for ->short(); + * + * $slinky = new Slinky( 'http://dentedreality.com.au', new Slinky_Bitly() ); + * - Creates new Slinky, forces use of Bit.ly for ->short(); + * + * $slinky = new Slinky( 'http://dentedreality.com.au/' ); + * echo $slinky->short(); + * - echos the short version of http://dentedreality.com.au/ (default to TinyURL) + * + * $slinky = new Slinky( 'http://tinyurl.com/jw5sh' ); + * echo $slinky->long(); + * - echos out the long version of http://tinyurl.com/jw5sh (which should be http://dentedreality.com.au/) + * + * $slinky = new Slinky( 'http://dentedreality.com.au/' ); + * echo $slinky->long(); + * - Attempts to lengthen the URL, but will not auto-detect which service it is + * so it will just output the original URL. Useful for always attempting to + * lengthen any URL you come across (fails gracefully) + * + * $slinky = new Slinky( 'http://dentedreality.com.au/' ); + * $slinky->set_cascade( array( new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) ); + * echo $slinky->short(); + * - Uses the powerful cascade mode to make sure that we get a short URL from + * Tr.im, Is.Gd or TinyURL (in that order). + * + * See specific service class definitions below for examples of how to use them, + * as some services allow (or require) additional properties before you can use + * them (for authentication etc). + * + * To use a different service with Slinky, just create your own class and + * extend Slinky_Service(). Make sure you implement url_is_short(), url_is_long(), + * make_short() and make_long(). If you need to GET or POST a URL, you can use + * ->url_get() and ->url_post(), which your class will have inherited. +**/ +class Slinky { + var $url = false; + var $service = false; + var $cascade = false; + + function __construct( $url = false, $service = false ) { + $this->url = $url; + $this->service = $service; + } + + /** + * Specify which URL Service to use + * + * @param Slinky_Service $service Packaged or custom Service object + * @return void + */ + public function set_service( $service = false ) { + if ( is_object( $service ) ) { + $this->service = $service; + } + } + + /** + * If you pass an array of Slinky_Service objects to this method, they will + * be used in order to try to get a short URL, so if one fails, it will + * try the next and so on, until it gets a valid short URL, or it runs + * out of options. + * + * @param array $services List of Slinky_Service objects as an array + **/ + public function set_cascade( $services = false ) { + if ( !$services || !is_array( $services ) ) + return false; + + $this->cascade = $services; + } + + /** + * Guess the URL service to use from known domains of short URLs + * + * @param string $url + */ + public function set_service_from_url( $url = false ) { + if ( !$url ) + $url = $this->url; + + $host = parse_url( $url, PHP_URL_HOST ); + switch ( str_replace( 'www.', '', $host ) ) { + case 'bit.ly': + if ( class_exists( 'Slinky_Bitly' ) ) { + $this->service = new Slinky_Bitly(); + break; + } + case 'tr.im': + if ( class_exists( 'Slinky_Trim' ) ) { + $this->service = new Slinky_Trim(); + break; + } + case 'tinyurl.com': + if ( class_exists( 'Slinky_TinyURL' ) ) { + $this->service = new Slinky_TinyURL(); + break; + } + case 'is.gd': + if ( class_exists( 'Slinky_IsGd' ) ) { + $this->service = new Slinky_IsGd(); + break; + } + case 'fon.gs': + if ( class_exists( 'Slinky_Fongs' ) ) { + $this->service = new Slinky_Fongs(); + break; + } + case 'micurl.com': + if ( class_exists( 'Slinky_Micurl' ) ) { + $this->service = new Slinky_Micurl(); + break; + } + case 'ur1.ca': + if ( class_exists( 'Slinky_Ur1ca' ) ) { + $this->service = new Slinky_Ur1ca(); + break; + } + case 'ptiturl.com': + if ( class_exists( 'Slinky_PtitURL' ) ) { + $this->service = new Slinky_PtitURL(); + break; + } + case 'tighturl.com': + case '2tu.us': + if ( class_exists( 'Slinky_TightURL' ) ) { + $this->service = new Slinky_TightURL(); + break; + } + case 'snipr.com': + case 'snipurl.com': + case 'snurl.com': + case 'sn.im': + if ( class_exists( 'Slinky_Snipr' ) ) { + $this->service = new Slinky_Snipr(); + break; + } + default: + $this->service = new Slinky_Default(); + break; + } + } + + /** + * Take a long URL and make it short. Will avoid "re-shortening" a URL if it + * already seems to be short. + * + * @param string $url Optional URL to shorten, otherwise use $this->url + * @return The short version of the URL + */ + public function short( $url = false ) { + if ( $url ) + $this->url = $url; + + if ( !$this->service ) + $this->set_service( new Slinky_TinyURL() ); // Defaults to tinyurl because it doesn't require any configuration + + if ( !$this->cascade ) + $this->cascade = array( $this->service ); // Use a single service in cascade mode + + foreach ( $this->cascade as $service ) { + if ( $service->url_is_short( $this->url ) ) + return trim( $this->url ); // Identified as already short, using this service + + $response = trim( $service->make_short( $this->url ) ); + if ( $response && $this->url != $response ) + return trim( $response ); + } + + return $this->url; // If all else fails, just send back the URL we already know about + } + + /** + * Take a short URL and make it long ("resolve" it). + * + * @param string $url The short URL + * @return A long URL + */ + public function long( $url = false ) { + if ( $url ) + $this->url = $url; + + if ( !$this->service ) + $this->set_service_from_url(); + + if ( $this->service->url_is_long( $this->url ) ) + return trim( $this->url ); + + return trim( $this->service->make_long( $this->url ) ); + } +} + +/** + * Use this class to create a Service implementation for your own URL + * shortening service. Extend the class and customize methods to suit your + * service. Note that it is an "abstract" class, so there are certain methods + * which you *must* define. +**/ +abstract class Slinky_Service { + + /** + * Determine, based on the input URL, if it's already a short URL, from + * this particular service. e.g. a Bit.ly URL contains "bit.ly/" + **/ + abstract function url_is_short( $url ); + + /** + * Determine if this is a "long" URL (just means it hasn't been shortened) + * already. e.g. a no-Bit.ly URL would NOT contain "bit.ly/" + **/ + abstract function url_is_long( $url ); + + /** + * Handle taking the $url and converting it to a short URL via whatever + * means is provided at the remote service. + **/ + abstract function make_short( $url ); + + /** + * Return the long/expanded version of a URL via any API means available + * from this service. As a fallback, you might + * consider just following the URL and using SLINKY_FINAL_URL as the + * return method from a $this->url_get() call to find out. + * + * This one is optional for Services extending this class, if they don't + * then the following implementation will work on most services anyway. + **/ + public function make_long( $url ) { + return $this->url_get( $url, SLINKY_FINAL_URL ); + } + + /** + * Method for getting properties that you might need during the process + * of shortening/lengthening a URL (e.g. auth credentials) + **/ + public function get( $prop ) { + if ( empty( $this->$prop ) ) + return null; + + return $this->$prop; + } + + /** + * Method for setting properties that you might need during the process + * of shortening/lengthening a URL (e.g. auth credentials) + **/ + public function set( $prop, $val ) { + $this->$prop = $val; + } + + /** + * Internal helper for performing a GET request on a remote URL. + * + * @param string $url The URL to GET + * @param const $return The return method [ SLINKY_BODY | SLINKY_FINAL_URL | SLINKY_HEADERS ] + * @return Mixed, based on the $return var passed in. + **/ + protected function url_get( $url, $return = SLINKY_BODY ) { + $ch = curl_init( $url ); + curl_setopt( $ch, CURLOPT_USERAGENT, SLINKY_USER_AGENT ); + curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, 0 ); // Don't stress about SSL validity + curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 ); // Return the response, don't output it + curl_setopt( $ch, CURLOPT_TIMEOUT, SLINKY_TIMEOUT ); // Limit how long we'll wait for a response + curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1 ); // Allow following of redirections + $r = curl_exec( $ch ); + if ( curl_errno( $ch ) ) { + return false; + } + + // Return whatever we were asked for + if ( SLINKY_FINAL_URL == $return ) + return curl_getinfo( $ch, CURLINFO_EFFECTIVE_URL ); + else if ( SLINKY_BODY == $return ) + return $r; + + return false; + } + + /** + * Internal helper for performing a POST request on a remote URL. + * + * @param string $url The URL to POST to + * @param array $payload Array containing name/value pairs of the parameters to POST + * @param const $return The return method [ SLINKY_BODY | SLINKY_FINAL_URL | SLINKY_HEADERS ] + * @return Mixed, based on the $return var passed in. + **/ + protected function url_post( $url, $payload = array(), $return = SLINKY_BODY ) { + $ch = curl_init( $url ); + curl_setopt( $ch, CURLOPT_POST, true ); + curl_setopt( $ch, CURLOPT_POSTFIELDS, (array) $payload ); + curl_setopt( $ch, CURLOPT_USERAGENT, SLINKY_USER_AGENT ); + curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, 0 ); // Don't stress about SSL validity + curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 ); // Return the response, don't output it + curl_setopt( $ch, CURLOPT_TIMEOUT, SLINKY_TIMEOUT ); // Limit how long we'll wait for a response + curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1 ); // Allow following of redirections + $r = curl_exec( $ch ); + if ( curl_errno( $ch ) ) { + return false; + } + + // Return whatever we were asked for + if ( SLINKY_FINAL_URL == $return ) + return curl_getinfo( $ch, CURLINFO_EFFECTIVE_URL ); + else if ( SLINKY_BODY == $return ) + return $r; + + return false; + } +} + +// This default service is used in cases when you try to do something based +// on auto-detection, but we can't detect anything. It will also resolve URLs +// to their "long" version by following all redirects. +class Slinky_Default extends Slinky_Service { + function url_is_short( $url ) { + return false; + } + + function url_is_long( $url ) { + return false; + } + + function make_short( $url ) { + return $url; + } +} + +// Implementation of TinyURL as a Slinky Service +class Slinky_TinyURL extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'tinyurl.com/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'tinyurl.com/' ); + } + + function make_short( $url ) { + return $this->url_get( 'http://tinyurl.com/api-create.php?url=' . urlencode( $url ) ); + } + + function make_long( $url ) { + $bits = parse_url( $url ); + $result = $this->url_get( 'http://tinyurl.com/preview.php?num=' . substr( $bits['path'], 1 ) ); + if ( preg_match('/<a id="redirecturl" href="([^"]+)">/is', $result, $matches ) ) + return $matches[1]; + else + return $url; + } +} + +// Implementation of Bit.ly as a Slinky Service +/* +To use Bit.ly, you MUST set your login and apiKey for the service first, e.g. + +$bitly = new Slinky_Bitly(); +$bitly->set( 'login', 'bitly_login' ); +$bitly->set( 'apiKey', 'bitly_apiKey' ); + +$slinky = new Slinky( $url, $bitly ); +echo $slinky->short(); + +You could also do this if the URL was already a bit.ly URL and you +were going to make it longer, since Bitly is supported for auto-detection: + +$slinky = new Slinky( $url ); +$slinky->set_service_from_url(); +$slinky->service->set( 'login', 'bitly_login' ); +$slinky->service->set( 'apiKey', 'bitly_apiKey' ); +echo $slinky->long(); + +*/ +class Slinky_Bitly extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'bit.ly/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'bit.ly/' ); + } + + function make_short( $url ) { + // Can't do anything unless these 2 properties are set first + if ( !$this->get( 'login' ) || !$this->get( 'apiKey' ) ) + return $url; + + $result = $this->url_post( 'http://api.bit.ly/shorten?version=2.0.1&format=json&login=' . $this->get( 'login' ) . '&apiKey=' . $this->get( 'apiKey' ) . '&longUrl=' . urlencode( $url ) ); + $result = json_decode( $result ); + if ( !$result->errorCode ) { + foreach ( $result->results as $detail ) { + return $detail->shortUrl; + } + } else { + return false; + } + } + + function make_long( $url ) { + // Can't do anything unless these 2 properties are set first + if ( !$this->get( 'login' ) || !$this->get( 'apiKey' ) ) + return $url; + + $result = $this->url_post( 'http://api.bit.ly/expand?version=2.0.1&format=json&login=' . $this->get( 'login' ) . '&apiKey=' . $this->get( 'apiKey' ) . '&shortUrl=' . urlencode( $url ) ); + $result = json_decode( $result ); + if ( !$result->errorCode ) { + foreach ( $result->results as $detail ) { + return $detail->longUrl; + } + } else { + return false; + } + } +} + +// Implementation of Tr.im as a Slinky Service +/* +When using Tr.im, you MAY optionally set your username and password to tie +URLs to your account, e.g. + +$trim = new Slinky_Trim(); +$trim->set( 'username', 'trim_username' ); +$trim->set( 'password', 'trim_password' ); + +$slinky = new Slinky( $url, $trim ); +echo $slinky->short(); + +You could also do this if the URL was already a tr.im URL and you +were going to make it longer, since Tr.im is supported for auto-detection: + +$slinky = new Slinky( $url ); +$slinky->set_service_from_url(); +echo $slinky->long(); + +*/ +class Slinky_Trim extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'tr.im/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'tr.im/' ); + } + + function make_short( $url ) { + $url = 'http://api.tr.im/api/trim_simple?url=' . urlencode( $url ); + + if ( $this->get( 'username' ) && $this->get( 'password' ) ) + $url .= '&username=' . urlencode( $this->get( 'username' ) ) . '&password=' . urlencode( $this->get( 'password' ) ); + + return $this->url_get( $url ); + } + + function make_long( $url ) { + $bits = parse_url( $url ); + $result = $this->url_get( 'http://api.tr.im/api/trim_destination.json?trimpath=' . substr( $bits['path'], 1 ) ); + $result = json_decode($result); + if ( 'OK' == $result->status->result ) + return $result->destination; + else + return $url; + } +} + +// Implementation of Is.Gd as a Slinky Service +class Slinky_IsGd extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'is.gd/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'is.gd/' ); + } + + function make_short( $url ) { + $response = $this->url_get( 'http://is.gd/api.php?longurl=' . urlencode( $url ) ); + if ( 'error' == substr( strtolower( $response ), 0, 5 ) ) + return false; + else + return $response; + } +} + +// Fon.gs +class Slinky_Fongs extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'fon.gs/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'fon.gs/' ); + } + + function make_short( $url ) { + $response = $this->url_get( 'http://fon.gs/create.php?url=' . urlencode( $url ) ); + if ( 'OK:' == substr( $response, 0, 3 ) ) + return str_replace( 'OK: ', '', $response ); + else + return $url; + } +} + +// Micu.rl +class Slinky_Micurl extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'micurl.com/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'micurl.com/' ); + } + + function make_short( $url ) { + $result = $this->url_get( 'http://micurl.com/api.php?url=' . urlencode( $url ) ); + if ( 1 != $result && 2 != $result ) + return 'http://micurl.com/' . $result; + else + return $url; + } +} + +// ur1.ca +class Slinky_Ur1ca extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'ur1.ca/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'ur1.ca/' ); + } + + function make_short( $url ) { + $result = $this->url_post( 'http://ur1.ca/', array( 'longurl' => $url ) ); + if ( preg_match( '/<p class="success">Your ur1 is: <a href="([^"]+)">/', $result, $matches ) ) + return $matches[1]; + else + return $url; + } +} + +// PtitURL.com +class Slinky_PtitURL extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'ptiturl.com/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'ptiturl.com/' ); + } + + function make_short( $url ) { + $result = $this->url_get( 'http://ptiturl.com/index.php?creer=oui&url=' . urlencode( $url ) ); + if ( preg_match( '/<pre><a href=\'?([^\'>]+)\'?>/', $result, $matches ) ) + return $matches[1]; + else + return $url; + } +} + +// Tighturl.com +class Slinky_TightURL extends Slinky_Service { + function url_is_short( $url ) { + return stristr( $url, 'tighturl.com/' ) + || stristr( $url, '2tu.us/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'tighturl.com/' ) + && !stristr( $url, '2tu.us/' ); + } + + function make_short( $url ) { + $response = $this->url_get( 'http://tighturl.com/?save=y&url=' . urlencode( $url ) ); + if ( preg_match( '/Your tight URL is: <code><a href=\'([^\']+)\' target=\'_blank\'>/', $response, $matches ) ) { + return $matches[1]; + } else { + return $url; + } + } +} + +// Snipr for Slinky +/* +To use Snipr, you MUST set your user_id and API (key) for the service first, e.g. + +$snipr = new Slinky_Snipr(); +$snipr->set( 'user_id', 'Snipr User ID' ); +$snipr->set( 'API', 'Snipr API Key' ); + +$slinky = new Slinky( $url, $snipr ); +echo $slinky->short(); + +NOTE: Snipr requires the SimpleXML extension to be installed for lengthening URLs +*/ +class Slinky_Snipr extends Slinky_Service { + // Snipurl, Snurl, Snipr, Sn.im + function url_is_short( $url ) { + return stristr( $url, 'snipr.com/' ) || stristr( $url, 'snipurl.com/' ) || stristr( $url, 'snurl.com/' ) || stristr( $url, 'sn.im/' ); + } + + function url_is_long( $url ) { + return !stristr( $url, 'snipr.com/' ) || !stristr( $url, 'snipurl.com/' ) || !stristr( $url, 'snurl.com/' ) || !stristr( $url, 'sn.im/' ); + } + + function make_short( $url ) { + if ( !$this->get( 'user_id' ) || !$this->get( 'API' ) ) + return $url; + + $response = $this->url_post( 'http://snipr.com/site/getsnip', array( 'sniplink' => urlencode( $url ), 'snipuser' => $this->get( 'user_id'), 'snipapi' => $this->get( 'API' ), 'snipformat' => 'simple' ) ); + if ( 'ERROR' != substr( $response, 0, 5 ) ) + return $response; + else + return $url; + } +} + +// If you're testing things out, http://dentedreality.com.au/ should convert to: +// - http://tinyurl.com/jw5sh +// - http://bit.ly/hEkAD +// - http://tr.im/sk1H +// - http://is.gd/1yJ81 +// - http://fon.gs/tc1p8c +// - http://micurl.com/qen3uub +// - http://ur1.ca/7dcd +// - http://ptiturl.com/?id=bac8fb +// - http://tighturl.com/kgd +// - http://snipr.com/nbbw3 +// +// $slinky = new Slinky( 'http://dentedreality.com.au/' ); +// echo $slinky->short(); diff --git a/library/twitteroauth.php b/library/twitteroauth.php new file mode 100644 index 000000000..7f3dcba4d --- /dev/null +++ b/library/twitteroauth.php @@ -0,0 +1,245 @@ +<?php + +/* + * Abraham Williams (abraham@abrah.am) http://abrah.am + * + * The first PHP Library to support OAuth for Twitter's REST API. + */ + +/* Load OAuth lib. You can find it at http://oauth.net */ +require_once('library/OAuth1.php'); + +/** + * Twitter OAuth class + */ +class TwitterOAuth { + /* Contains the last HTTP status code returned. */ + public $http_code; + /* Contains the last API call. */ + public $url; + /* Set up the API root URL. */ + public $host = "https://api.twitter.com/1/"; + /* Set timeout default. */ + public $timeout = 30; + /* Set connect timeout. */ + public $connecttimeout = 30; + /* Verify SSL Cert. */ + public $ssl_verifypeer = FALSE; + /* Respons format. */ + public $format = 'json'; + /* Decode returned json data. */ + public $decode_json = TRUE; + /* Contains the last HTTP headers returned. */ + public $http_info; + /* Set the useragnet. */ + public $useragent = 'TwitterOAuth v0.2.0-beta2'; + /* Immediately retry the API call if the response was not successful. */ + //public $retry = TRUE; + + + + + /** + * Set API URLS + */ + function accessTokenURL() { return 'https://api.twitter.com/oauth/access_token'; } + function authenticateURL() { return 'https://twitter.com/oauth/authenticate'; } + function authorizeURL() { return 'https://twitter.com/oauth/authorize'; } + function requestTokenURL() { return 'https://api.twitter.com/oauth/request_token'; } + + /** + * Debug helpers + */ + function lastStatusCode() { return $this->http_status; } + function lastAPICall() { return $this->last_api_call; } + + /** + * construct TwitterOAuth object + */ + function __construct($consumer_key, $consumer_secret, $oauth_token = NULL, $oauth_token_secret = NULL) { + $this->sha1_method = new OAuthSignatureMethod_HMAC_SHA1(); + $this->consumer = new OAuthConsumer($consumer_key, $consumer_secret); + if (!empty($oauth_token) && !empty($oauth_token_secret)) { + $this->token = new OAuthConsumer($oauth_token, $oauth_token_secret); + } else { + $this->token = NULL; + } + } + + + /** + * Get a request_token from Twitter + * + * @returns a key/value array containing oauth_token and oauth_token_secret + */ + function getRequestToken($oauth_callback = NULL) { + $parameters = array(); + if (!empty($oauth_callback)) { + $parameters['oauth_callback'] = $oauth_callback; + } + $request = $this->oAuthRequest($this->requestTokenURL(), 'GET', $parameters); + $token = OAuthUtil::parse_parameters($request); + $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']); + return $token; + } + + /** + * Get the authorize URL + * + * @returns a string + */ + function getAuthorizeURL($token, $sign_in_with_twitter = TRUE) { + if (is_array($token)) { + $token = $token['oauth_token']; + } + if (empty($sign_in_with_twitter)) { + return $this->authorizeURL() . "?oauth_token={$token}"; + } else { + return $this->authenticateURL() . "?oauth_token={$token}"; + } + } + + /** + * Exchange request token and secret for an access token and + * secret, to sign API calls. + * + * @returns array("oauth_token" => "the-access-token", + * "oauth_token_secret" => "the-access-secret", + * "user_id" => "9436992", + * "screen_name" => "abraham") + */ + function getAccessToken($oauth_verifier = FALSE) { + $parameters = array(); + if (!empty($oauth_verifier)) { + $parameters['oauth_verifier'] = $oauth_verifier; + } + $request = $this->oAuthRequest($this->accessTokenURL(), 'GET', $parameters); + $token = OAuthUtil::parse_parameters($request); + $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']); + return $token; + } + + /** + * One time exchange of username and password for access token and secret. + * + * @returns array("oauth_token" => "the-access-token", + * "oauth_token_secret" => "the-access-secret", + * "user_id" => "9436992", + * "screen_name" => "abraham", + * "x_auth_expires" => "0") + */ + function getXAuthToken($username, $password) { + $parameters = array(); + $parameters['x_auth_username'] = $username; + $parameters['x_auth_password'] = $password; + $parameters['x_auth_mode'] = 'client_auth'; + $request = $this->oAuthRequest($this->accessTokenURL(), 'POST', $parameters); + $token = OAuthUtil::parse_parameters($request); + $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']); + return $token; + } + + /** + * GET wrapper for oAuthRequest. + */ + function get($url, $parameters = array()) { + $response = $this->oAuthRequest($url, 'GET', $parameters); + if ($this->format === 'json' && $this->decode_json) { + return json_decode($response); + } + return $response; + } + + /** + * POST wrapper for oAuthRequest. + */ + function post($url, $parameters = array()) { + $response = $this->oAuthRequest($url, 'POST', $parameters); + if ($this->format === 'json' && $this->decode_json) { + return json_decode($response); + } + return $response; + } + + /** + * DELETE wrapper for oAuthReqeust. + */ + function delete($url, $parameters = array()) { + $response = $this->oAuthRequest($url, 'DELETE', $parameters); + if ($this->format === 'json' && $this->decode_json) { + return json_decode($response); + } + return $response; + } + + /** + * Format and sign an OAuth / API request + */ + function oAuthRequest($url, $method, $parameters) { + if (strrpos($url, 'https://') !== 0 && strrpos($url, 'http://') !== 0) { + $url = "{$this->host}{$url}.{$this->format}"; + } + $request = OAuthRequest::from_consumer_and_token($this->consumer, $this->token, $method, $url, $parameters); + $request->sign_request($this->sha1_method, $this->consumer, $this->token); + switch ($method) { + case 'GET': + return $this->http($request->to_url(), 'GET'); + default: + return $this->http($request->get_normalized_http_url(), $method, $request->to_postdata()); + } + } + + /** + * Make an HTTP request + * + * @return API results + */ + function http($url, $method, $postfields = NULL) { + $this->http_info = array(); + $ci = curl_init(); + /* Curl settings */ + curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent); + curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout); + curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout); + curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE); + curl_setopt($ci, CURLOPT_HTTPHEADER, array('Expect:')); + curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer); + curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader')); + curl_setopt($ci, CURLOPT_HEADER, FALSE); + + switch ($method) { + case 'POST': + curl_setopt($ci, CURLOPT_POST, TRUE); + if (!empty($postfields)) { + curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields); + } + break; + case 'DELETE': + curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE'); + if (!empty($postfields)) { + $url = "{$url}?{$postfields}"; + } + } + + curl_setopt($ci, CURLOPT_URL, $url); + $response = curl_exec($ci); + $this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE); + $this->http_info = array_merge($this->http_info, curl_getinfo($ci)); + $this->url = $url; + curl_close ($ci); + return $response; + } + + /** + * Get the header info to store. + */ + function getHeader($ch, $header) { + $i = strpos($header, ':'); + if (!empty($i)) { + $key = str_replace('-', '_', strtolower(substr($header, 0, $i))); + $value = trim(substr($header, $i + 2)); + $this->http_header[$key] = $value; + } + return strlen($header); + } +} |