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<?php |
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namespace DrewM\MailChimp; |
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/** |
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* Class OAuth |
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* This class allows one to use the oauth authentication of Mailchimp |
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* @package DrewM\MailChimp |
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*/ |
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class OAuth |
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{ |
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/** |
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* Get Mailchimp Authentication url |
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* |
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* @param $client_id |
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* @param $redirect_uri |
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* @return string |
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*/ |
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public static function getAuthUrl($client_id, $redirect_uri){ |
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$encoded_uri = urldecode($redirect_uri); |
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$authUrl = "https://login.mailchimp.com/oauth2/authorize"; |
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$authUrl .= "?client_id=" . $client_id; |
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$authUrl .= "&redirect_uri=" . $encoded_uri; |
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$authUrl .= "&response_type=code"; |
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return $authUrl; |
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} |
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/** |
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* Get a user access token from the code retrieved with getUrl |
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* |
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* @param $code |
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* @param $client_id |
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* @param $client_secret |
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* @param $redirect_uri |
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* @return string |
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*/ |
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public static function getAccessToken($code, $client_id, $client_secret, $redirect_uri) |
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{ |
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$encoded_uri = urldecode($redirect_uri); |
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$oauth_string = "grant_type=authorization_code"; |
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$oauth_string .= "&client_id=" . $client_id; |
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$oauth_string .= "&client_secret=" . $client_secret; |
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$oauth_string .= "&redirect_uri=" . $encoded_uri; |
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$oauth_string .= "&code=" . $code; |
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return self::exchange($oauth_string); |
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} |
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/** |
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* Internal function that makes call to Mailchimp API to get an access token |
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* |
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* @param $oauth_string |
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* @return string |
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* @throws \Exception |
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*/ |
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private static function exchange($oauth_string) |
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{ |
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$ch = curl_init('https://login.mailchimp.com/oauth2/token'); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($ch, CURLOPT_POST, true); |
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curl_setopt($ch, CURLOPT_POSTFIELDS, $oauth_string); |
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$return = curl_exec($ch); |
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if (!is_null(json_decode($return))) { |
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$return = json_decode($return); |
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} |
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curl_close($ch); |
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if (!$return->access_token) { |
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throw new \Exception( |
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'MailChimp did not return an access token', |
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$return |
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); |
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} |
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$headers = array('Authorization: OAuth ' . $return->access_token); |
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$ch = curl_init("https://login.mailchimp.com/oauth2/metadata/"); |
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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$account = curl_exec($ch); |
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if (!is_null(json_decode($account))) { |
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$account = json_decode($account); |
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} |
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curl_close($ch); |
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if (!$account->dc) { |
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throw new \Exception( |
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'Unable to retrieve account meta-data', |
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$account |
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); |
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} |
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return $return->access_token . "-" . $account->dc; |
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} |
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} |
drewm /
mailchimp-api
