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<?php /** * tmhOAuth * * An OAuth 1.0A library written in PHP. * The library supports file uploading using multipart/form as well as general * REST requests. OAuth authentication is sent using the an Authorization Header. * * @author themattharris * @version 0.7.4 * * 19 February 2013 */ class tmhOAuth { const VERSION = '0.7.4'; var $response = array(); /** * Creates a new tmhOAuth object * * @param string $config, the configuration to use for this request * @return void */ public function __construct($config=array()) { $this->params = array(); $this->headers = array(); $this->auto_fixed_time = false; $this->buffer = null; // default configuration options $this->config = array_merge( array( // leave 'user_agent' blank for default, otherwise set this to // something that clearly identifies your app 'user_agent' => '', // default timezone for requests 'timezone' => 'UTC', 'use_ssl' => true, 'host' => 'api.twitter.com', 'consumer_key' => '', 'consumer_secret' => '', 'user_token' => '', 'user_secret' => '', 'force_nonce' => false, 'nonce' => false, // used for checking signatures. leave as false for auto 'force_timestamp' => false, 'timestamp' => false, // used for checking signatures. leave as false for auto // oauth signing variables that are not dynamic 'oauth_version' => '1.0', 'oauth_signature_method' => 'HMAC-SHA1', // you probably don't want to change any of these curl values 'curl_connecttimeout' => 30, 'curl_timeout' => 10, // for security this should always be set to 2. 'curl_ssl_verifyhost' => 2, // for security this should always be set to true. 'curl_ssl_verifypeer' => true, // you can get the latest cacert.pem from here http://curl.haxx.se/ca/cacert.pem 'curl_cainfo' => dirname(__FILE__) . DIRECTORY_SEPARATOR . 'cacert.pem', 'curl_capath' => dirname(__FILE__), 'curl_followlocation' => false, // whether to follow redirects or not // support for proxy servers 'curl_proxy' => false, // really you don't want to use this if you are using streaming 'curl_proxyuserpwd' => false, // format username:password for proxy, if required 'curl_encoding' => '', // leave blank for all supported formats, else use gzip, deflate, identity // streaming API 'is_streaming' => false, 'streaming_eol' => "\r\n", 'streaming_metrics_interval' => 60, // header or querystring. You should always use header! // this is just to help me debug other developers implementations 'as_header' => true, 'debug' => false, ), $config ); $this->set_user_agent(); date_default_timezone_set($this->config['timezone']); } /** * Sets the useragent for PHP to use * If '$this->config['user_agent']' already has a value it is used instead of one * being generated. * * @return void value is stored to the config array class variable */ private function set_user_agent() { if (!empty($this->config['user_agent'])) return; if ($this->config['curl_ssl_verifyhost'] && $this->config['curl_ssl_verifypeer']) { $ssl = '+SSL'; } else { $ssl = '-SSL'; } $ua = 'tmhOAuth ' . self::VERSION . $ssl . ' - //github.com/themattharris/tmhOAuth'; $this->config['user_agent'] = $ua; } /** * Generates a random OAuth nonce. * If 'force_nonce' is true a nonce is not generated and the value in the configuration will be retained. * * @param string $length how many characters the nonce should be before MD5 hashing. default 12 * @param string $include_time whether to include time at the beginning of the nonce. default true * @return void value is stored to the config array class variable */ private function create_nonce($length=12, $include_time=true) { if ($this->config['force_nonce'] == false) { $sequence = array_merge(range(0,9), range('A','Z'), range('a','z')); $length = $length > count($sequence) ? count($sequence) : $length; shuffle($sequence); $prefix = $include_time ? microtime() : ''; $this->config['nonce'] = md5(substr($prefix . implode('', $sequence), 0, $length)); } } /** * Generates a timestamp. * If 'force_timestamp' is true a nonce is not generated and the value in the configuration will be retained. * * @return void value is stored to the config array class variable */ private function create_timestamp() { $this->config['timestamp'] = ($this->config['force_timestamp'] == false ? time() : $this->config['timestamp']); } /** * Encodes the string or array passed in a way compatible with OAuth. * If an array is passed each array value will will be encoded. * * @param mixed $data the scalar or array to encode * @return $data encoded in a way compatible with OAuth */ private function safe_encode($data) { if (is_array($data)) { return array_map(array($this, 'safe_encode'), $data); } else if (is_scalar($data)) { return str_ireplace( array('+', '%7E'), array(' ', '~'), rawurlencode($data) ); } else { return ''; } } /** * Decodes the string or array from it's URL encoded form * If an array is passed each array value will will be decoded. * * @param mixed $data the scalar or array to decode * @return string $data decoded from the URL encoded form */ private function safe_decode($data) { if (is_array($data)) { return array_map(array($this, 'safe_decode'), $data); } else if (is_scalar($data)) { return rawurldecode($data); } else { return ''; } } /** * Returns an array of the standard OAuth parameters. * * @return array all required OAuth parameters, safely encoded */ private function get_defaults() { $defaults = array( 'oauth_version' => $this->config['oauth_version'], 'oauth_nonce' => $this->config['nonce'], 'oauth_timestamp' => $this->config['timestamp'], 'oauth_consumer_key' => $this->config['consumer_key'], 'oauth_signature_method' => $this->config['oauth_signature_method'], ); // include the user token if it exists if ( $this->config['user_token'] ) $defaults['oauth_token'] = $this->config['user_token']; // safely encode foreach ($defaults as $k => $v) { $_defaults[$this->safe_encode($k)] = $this->safe_encode($v); } return $_defaults; } /** * Extracts and decodes OAuth parameters from the passed string * * @param string $body the response body from an OAuth flow method * @return array the response body safely decoded to an array of key => values */ public function extract_params($body) { $kvs = explode('&', $body); $decoded = array(); foreach ($kvs as $kv) { $kv = explode('=', $kv, 2); $kv[0] = $this->safe_decode($kv[0]); $kv[1] = $this->safe_decode($kv[1]); $decoded[$kv[0]] = $kv[1]; } return $decoded; } /** * Prepares the HTTP method for use in the base string by converting it to * uppercase. * * @param string $method an HTTP method such as GET or POST * @return void value is stored to the class variable 'method' */ private function prepare_method($method) { $this->method = strtoupper($method