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OAuth_1a.php
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OAuth_1a.php
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<?php
/**
* OAuth_1a
*
* A PHP Library to interact with OAuth version 1.0a protected resources following
* PHP's PECL OAuth method of functioning as closely as possible
*
* @package OAuth_1a
* @author Joshua Zeitlinger <[email protected]>
* @link https://github.com/joshuaspring9/Oauth_1a
* @version 0.1.1
*
*
* History:
* version 0.1 - first version
* version 0.1.1 - put OAuth_1a_Exception class in a separate file
* version 0.2 - no changes in this file
*
*/
//import the custom exceptions class
require "OAuth_1a_Exception.php";
class OAuth_1a {
private $consumer_key;
private $consumer_secret;
private $oauth_token;
private $oauth_token_secret;
private $signature_method;
private $auth_method;
private $last_response;
private $last_response_debug;
public function __construct($consumer_key_public, $consumer_key_secret, $sig_method, $authentication_method)
{
$this->consumer_key = $consumer_key_public;
$this->consumer_secret = $consumer_key_secret;
$this->signature_method = $sig_method;
$this->auth_method = $authentication_method;
$this->last_response_debug = array();
}
public function getRequestToken($url, $callback, $type)
{
$time = time();
$nonce = mt_rand();
$oauth = array (
"oauth_callback" => $callback,
"oauth_consumer_key" => $this->consumer_key,
"oauth_nonce" => mt_rand(),
"oauth_signature_method" => $this->signature_method,
"oauth_timestamp" => time(),
"oauth_version" => "1.0",
);
$curl = curl_init();
if(strtoupper($this->auth_method) == "QUERY")
$url = $this->_setupHeader($url, $oauth, null, false, $type);
else
curl_setopt($curl, CURLOPT_HTTPHEADER, array($this->_setupHeader($url, $oauth, null, true, $type)));
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
curl_setopt($curl, CURLOPT_HEADER, 1);
$type = strtoupper($type);
switch ($type)
{
case 'POST' :
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $type);
case 'GET':
break;
default:
throw new OAuth_1a_Exception("The verb $type is not a RESTful verb or not supported", 4, false, false, false, false);
}
$response = curl_exec($curl);
$response_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
$header_size = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
$response_header = substr($response, 0, $header_size);
$response_body = substr($response, $header_size);
if ($response_code != 200)
{
throw new OAuth_1a_Exception("An error occurred while fetching the access token", 2, $response_header, $response_body, $response_code, $header_size);
}
// Uncomment next four lines to see/debug full cURL response
// $curl_info = curl_getinfo($curl);
// var_dump($curl_info);
// var_dump($response_header);
// var_dump($response_body);
if(!$response)
throw new OAuth_1a_Exception("Connection to the server failed", 0, false, false, false, false);
//store these for debugging purposes
$this->last_response_debug["code"] = $response_code;
$this->last_response_debug["headers"] = $response_header;
$this->last_response_debug["body"] = $response_code;
$data = array();
parse_str($response_body, $data);
$this->last_response = $data;
return true;
}
public function setToken($token, $secret)
{
$this->oauth_token = $token;
$this->oauth_token_secret = $secret;
}
public function getAccessToken($url, $oauth_verifier, $type)
{
$time = time();
$nonce = mt_rand();
$oauth = array (
"oauth_consumer_key" => $this->consumer_key,
"oauth_nonce" => mt_rand(),
"oauth_signature_method" => $this->signature_method,
"oauth_timestamp" => time(),
"oauth_token" => $this->oauth_token,
"oauth_verifier" => $oauth_verifier,
"oauth_version" => "1.0",
);
$curl = curl_init();
if(strtoupper($this->auth_method) == "QUERY")
$url = $this->_setupHeader($url, $oauth, null, false, $type);
else
curl_setopt($curl, CURLOPT_HTTPHEADER, array($this->_setupHeader($url, $oauth, null, true, $type)));
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
curl_setopt($curl, CURLOPT_HEADER, 1);
$type = strtoupper($type);
switch ($type)
{
case 'POST' :
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $type);
case 'GET':
break;
default:
throw new OAuth_1a_Exception("The verb $type is not a RESTful verb or not supported", 4, false, false, false, false);
}
$response = curl_exec($curl);
$response_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
$header_size = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
$response_header = substr($response, 0, $header_size);
$response_body = substr($response, $header_size);
if ($response_code != 200)
{
throw new OAuth_1a_Exception("An error occurred while fetching the access token", 2, $response_header, $response_body, $response_code, $header_size);
}
// Uncomment next four lines to see/debug full cURL response
// $curl_info = curl_getinfo($curl);
// var_dump($curl_info);
// var_dump($response_header);
// var_dump($response_body);
if(!$response)
throw new OAuth_1a_Exception("Connection to the server failed", 0, false, false, false, false);
//store these for debugging purposes
$this->last_response_debug["code"] = $response_code;
$this->last_response_debug["headers"] = $response_header;
$this->last_response_debug["body"] = $response_code;
$data = array();
parse_str($response_body, $data);
$this->last_response = $data;
return true;
}
public function fetch($url, $extra_parameters, $type, $headers = null)
{
$time = time();
$nonce = mt_rand();
$oauth = array (
"oauth_consumer_key" => $this->consumer_key,
"oauth_nonce" => mt_rand(),
"oauth_signature_method" => $this->signature_method,
"oauth_timestamp" => time(),
"oauth_token" => $this->oauth_token,
"oauth_version" => "1.0",
);
if($extra_parameters != null)
$with_extras = array_merge($oauth, $extra_parameters);
else
$with_extras = $oauth;
$curl = curl_init();
if(strtoupper($this->auth_method) == "QUERY")
$url = $this->_setupHeader($url, $oauth, $with_extras, false, $type);
else
{
$heads = array($this->_setupHeader($url, $oauth, $with_extras, true, $type));
if($headers != null)
$heads = array_merge($heads, $headers);
curl_setopt($curl, CURLOPT_HTTPHEADER, $heads);
}
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
curl_setopt($curl, CURLOPT_HEADER, 1);
$type = strtoupper($type);
switch ($type)
{
case 'POST' :
case 'PUT' :
case 'PATCH' :
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $type);
curl_setopt($curl, CURLOPT_POSTFIELDS, $extra_parameters);
break;
case 'DELETE':
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $type);
break;
case 'GET':
break;
default:
throw new OAuth_1a_Exception("The verb $type is not a RESTful verb or not supported", 4, false, false, false, false);
}
$response = curl_exec($curl);
$response_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
$header_size = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
$response_header = substr($response, 0, $header_size);
$response_body = substr($response, $header_size);
if ($response_code != 200)
{
throw new OAuth_1a_Exception("An error occurred while fetching the access token", 2, $response_header, $response_body, $response_code, $header_size);
}
// Uncomment next four lines to see/debug full cURL response
// $curl_info = curl_getinfo($curl);
// var_dump($curl_info);
// var_dump($response_header);
// var_dump($response_body);
if(!$response)
throw new OAuth_1a_Exception("Connection to the server failed", 0, false, false, false, false);
//store these for debugging purposes
$this->last_response_debug["code"] = $response_code;
$this->last_response_debug["headers"] = $response_header;
$this->last_response_debug["body"] = $response_code;
$this->last_response = $response_body;
return true;
}
public function getLastResponse()
{
return $this->last_response;
}
public function getLastResponseDebug()
{
return $this->last_response_debug;
}
private function _get_base($url, $method, $params) {
$holder = array();
ksort($params);
foreach($params as $key=>$value){
$holder[] = "$key=" . rawurlencode($value);
}
return $method ."&". rawurlencode($url) ."&". rawurlencode(implode("&", $holder));
}
private function _setupHeader($url, $oauth, $with_extras, $auth_type, $type)
{
if(empty($this->oauth_token_secret))
$this->oauth_token_secret = null;
if($this->signature_method == "HMAC-SHA1")
{
if($with_extras == null)
$with_extras = $oauth;
$base = $this->_get_base($url, $type, $with_extras);
$key = rawurlencode($this->consumer_secret) . '&' . rawurlencode($this->oauth_token_secret);
$oauth_signature = base64_encode(hash_hmac('sha1', $base, $key, true));
$oauth['oauth_signature'] = $oauth_signature;
} else if($this->signature_method == "PLAINTEXT")
{
$oauth['oauth_signature'] = rawurlencode($this->consumer_secret) . '&' . rawurlencode($this->oauth_token_secret);
} else
{
throw new OAuth_1a_Exception("The signature method ".$this->signature_method." is currently not supported", 3, false, false, false, false);
}
if($auth_type)
{
$oauthString = "Authorization: OAuth " ;
foreach($oauth as $key=>$value) {
$stringKey = rawurlencode($key);
$stringValue = rawurlencode($value);
$oauthString .= "$stringKey=\"$stringValue\", ";
}
$oauthString = rtrim($oauthString,", ");
}
else
{
$oauthString = "";
foreach($oauth as $key=>$value)
{
$stringKey = rawurlencode($key);
$stringValue = rawurlencode($value);
if(strlen($oauthString) == 0)
$oauthString .= "?";
else
$oauthString .= "&";
$oauthString .= "$stringKey=$stringValue";
}
$oauthString = $url.$oauthString;
}
return $oauthString;
}
}