1 files changed, 128 insertions, 0 deletions
diff --git a/lib/twitteroauthclient.php b/lib/twitteroauthclient.php
new file mode 100644
index 000000000..63ffe1c7c
--- /dev/null
+++ b/lib/twitteroauthclient.php
@@ -0,0 +1,128 @@
+<?php
+
+require_once('OAuth.php');
+
+class OAuthClientCurlException extends Exception { }
+
+class TwitterOAuthClient
+{
+    public static $requestTokenURL = 'https://twitter.com/oauth/request_token';
+    public static $authorizeURL    = 'https://twitter.com/oauth/authorize';
+    public static $accessTokenURL  = 'https://twitter.com/oauth/access_token';
+
+    function __construct($oauth_token = null, $oauth_token_secret = null)
+    {
+        $this->sha1_method = new OAuthSignatureMethod_HMAC_SHA1();
+        $consumer_key    = common_config('twitter', 'consumer_key');
+        $consumer_secret = common_config('twitter', 'consumer_secret');
+        $this->consumer = new OAuthConsumer($consumer_key, $consumer_secret);
+        $this->token = null;
+
+        if (isset($oauth_token) && isset($oauth_token_secret)) {
+            $this->token = new OAuthToken($oauth_token, $oauth_token_secret);
+        }
+    }
+
+    function getRequestToken()
+    {
+        $response = $this->oAuthGet(TwitterOAuthClient::$requestTokenURL);
+        parse_str($response);
+        $token = new OAuthToken($oauth_token, $oauth_token_secret);
+        return $token;
+    }
+
+    function getAuthorizeLink($request_token)
+    {
+        // Not sure Twitter actually looks at oauth_callback
+
+        return TwitterOAuthClient::$authorizeURL .
+        '?oauth_token=' . $request_token->key . '&oauth_callback=' .
+        urlencode(common_local_url('twitterauthorization'));
+    }
+
+    function getAccessToken()
+    {
+        $response = $this->oAuthPost(TwitterOAuthClient::$accessTokenURL);
+        parse_str($response);
+        $token = new OAuthToken($oauth_token, $oauth_token_secret);
+        return $token;
+    }
+
+    function verify_credentials()
+    {
+        $url = 'https://twitter.com/account/verify_credentials.json';
+        $response = $this->oAuthGet($url);
+        $twitter_user = json_decode($response);
+        return $twitter_user;
+    }
+
+    function statuses_update($status, $in_reply_to_status_id = null)
+    {
+        $url = 'https://twitter.com/statuses/update.json';
+        $params = array('status' => $status,
+            'in_reply_to_status_id' => $in_reply_to_status_id);
+        $response = $this->oAuthPost($url, $params);
+        $status = json_decode($response);
+        return $status;
+    }
+
+    function oAuthGet($url)
+    {
+        $request = OAuthRequest::from_consumer_and_token($this->consumer,
+            $this->token, 'GET', $url, null);
+        $request->sign_request($this->sha1_method,
+            $this->consumer, $this->token);
+
+        return $this->httpRequest($request->to_url());
+    }
+
+    function oAuthPost($url, $params = null)
+    {
+        $request = OAuthRequest::from_consumer_and_token($this->consumer,
+            $this->token, 'POST', $url, $params);
+        $request->sign_request($this->sha1_method,
+            $this->consumer, $this->token);
+
+        return $this->httpRequest($request->get_normalized_http_url(),
+            $request->to_postdata());
+    }
+
+    function httpRequest($url, $params = null)
+    {
+        $options = array(
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_FAILONERROR    => true,
+            CURLOPT_HEADER         => false,
+            CURLOPT_FOLLOWLOCATION => true,
+            CURLOPT_USERAGENT      => 'Laconica',
+            CURLOPT_CONNECTTIMEOUT => 120,
+            CURLOPT_TIMEOUT        => 120,
+            CURLOPT_HTTPAUTH       => CURLAUTH_ANY,
+            CURLOPT_SSL_VERIFYPEER => false,
+
+            // Twitter is strict about accepting invalid "Expect" headers
+
+            CURLOPT_HTTPHEADER => array('Expect:')
+        );
+
+        if (isset($params)) {
+            $options[CURLOPT_POST] = true;
+            $options[CURLOPT_POSTFIELDS] = $params;
+        }
+
+        $ch = curl_init($url);
+        curl_setopt_array($ch, $options);
+        $response = curl_exec($ch);
+
+        if ($response === false) {
+            $msg  = curl_error($ch);
+            $code = curl_errno($ch);
+            throw new OAuthClientCurlException($msg, $code);
+        }
+
+        curl_close($ch);
+
+        return $response;
+    }
+
+}