I am trying to authenticate with Twitter for a custom app using Drupal.
For some reason, even though I am including my OAuth credentials, I can't authenticate with the Twitter API.
Here's my code:
/**
* Pulls Twitter data for processing.
*/
function sentiment_analyzer_twitter_pull() {
$url = "https://api.twitter.com/1.1/search/tweets.json?q=%23superbowl&result_type=recent"; // test data used by Twitter
$oauth_access_token = variable_get('sentiment_analyzer_twitter_token');
$oauth_access_token_secret = variable_get('sentiment_analyzer_twitter_token_secret');
$consumer_key = variable_get('sentiment_analyzer_twitter_consumer_key');
$consumer_secret = variable_get('sentiment_analyzer_twitter_consumer_secret');
$oauth = array('oauth_consumer_key' => $consumer_key,
'oauth_nonce' => time(),
'oauth_signature_method' => 'HMAC-SHA1',
'oauth_token' => $oauth_access_token,
'oauth_timestamp' => time(),
'oauth_version' => '1.0');
$base_info = sentiment_analyzer_build_base_string($url, 'GET', $oauth);
$composite_key = rawurlencode($consumer_secret) . '&' . rawurlencode($oauth_access_token_secret);
$oauth_signature = base64_encode(hash_hmac('sha1', $base_info, $composite_key, true));
$oauth['oauth_signature'] = $oauth_signature;
// Make requests
$header = array(sentiment_analyzer_build_authorization_header($oauth), 'Expect:');
$options = array(CURLOPT_HTTPHEADER => $header,
//CURLOPT_POSTFIELDS => $postfields,
CURLOPT_HEADER => false,
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => false);
$feed = curl_init();
curl_setopt_array($feed, $options);
$json = curl_exec($feed);
curl_close($feed);
$twitter_data = json_decode($json);
watchdog("twitter data", "<pre>" . print_r($twitter_data, true) . "</pre>");
}
function sentiment_analyzer_build_base_string($base_uri, $method, $params) {
$r = array();
ksort($params);
foreach ($params as $key => $value) {
$r[] = "$key=" . rawurlencode($value);
}
return $method . "&" . rawurlencode($base_uri) . '&' . rawurlencode(implode('&', $r));
}
function sentiment_analyzer_build_authorization_header($oauth) {
$r = 'Authorization: OAuth ';
$values = array();
foreach ($oauth as $key => $value)
$values[] = "$key=\"" . rawurlencode($value) . "\"";
$r .= implode(', ', $values);
return $r;
}
The response I get is:
stdClass Object
(
[errors] => Array
(
[0] => stdClass Object
(
[code] => 32
[message] => Could not authenticate you.
)
)
)
Despite the fact that I am able to use this console:
https://dev.twitter.com/rest/tools/console
To perform a query.
What am I doing wrong?
The HTTP header for OAuth that Twitter seems to use uses the same values as what I sent.