Not retrieving token with bitbucket API - oauth

Question

I am trying to get a request token from Bitbucket but I'm getting "BAD REQUEST - Could not verify OAuth request". I am doing this with drupal and here is the code I have so far:
$key = "MY_KEY";
$secret ="MY_SECRET";
$timestamp = time();
$nonce = (int) (rand() * 100000000);
$callback = 'http://www.google.com'; //'htt//url('<front>', array('absolute' => TRUE)); //DRUPAL_ROOT . "/toolkittens/git";
$url = "https://bitbucket.org/api/1.0/oauth/request_token";
$data = array(
'oauth_nonce' => $nonce,
'oauth_timestamp' => $timestamp,
'oauth_consumer_key' => $key,
'oauth_signature_method' => 'PLAINTEXT',
'oauth_signature' => 'thisismysig',
'oauth_callback' => $callback,
'oauth_version' => '1.0',
);
$options = array(
'method' => 'POST',
'data' => drupal_http_build_query($data),
'headers' => array('Content-Type' => 'application/x-www-form-urlencoded'),
);
return drupal_http_request($url, $options);

Answer 1

You are providing a PLAINTEXT signature.
If you are requesting a token with the provided signature not encrypted, change your oauth_signature_method to 'PLAINTEXT', so bitbucket knows you didn't encrypt it.
$key = "MY_KEY";
$signature = "MY_SIGNATURE"; //I think this is your secret from bitbucket
$timestamp = time();
$nonce = rand();
$callback = DRUPAL_ROOT . "/toolkittens/git";
$url = "https://bitbucket.org/api/1.0/oauth/request_token";
$data = array(
'oauth_nonce' => $nonce,
'oauth_timestamp' => $timestamp,
'oauth_consumer_key' => $key,
'oauth_signature_method' => 'PLAINTEXT',
'oauth_signature' => $signature,
'oauth_callback' => $callback,
'oauth_version' => '1.0',
);
$options = array(
'method' => 'POST',
'data' => $data,
'headers' => array('Content-Type' => 'application/x-www-form-urlencoded'),
);
$full_url = url($url, array('query' => $data));
return drupal_http_request($full_url);
Also, you defined your options but never used them.