Invalid parameter: code

[Pratik Thakkar]

Hi,

I am trying to write a script that will import all content including author email details into our database. But I keep getting the below mentioned error

stdClass Object
(
    [error_description] => Invalid parameter: code
    [error] => invalid_grant
)

If I remove the "code" parameter, I get an error saying 

The authentication information returned:
stdClass Object
(
    [error_description] => Missing required parameter: code
    [error] => invalid_request
)

I would appreciate any help on this.

See my code below

<?

$PUBLIC_KEY = "XXXXXX";

$SECRET_KEY = "XXXXXX";

$redirect = "http://[domain]/disqus-import.php";

$ACCESS_TOKEN= 'XXXXXX';

$url = 'https://disqus.com/api/oauth/2.0/access_token/?';

$fields = array(

  'access_token'=>urlencode($ACCESS_TOKEN),

  'code'=>urlencode($ACCESS_TOKEN),

  'grant_type'=>'authorization_code',

  'client_id'=>urlencode($PUBLIC_KEY),

  'client_secret'=>urlencode($SECRET_KEY),

  'redirect_uri'=>urlencode($redirect)

);

//url-ify the data for the POST

foreach($fields as $key=>$value)

$fields_string .= $key.'='.$value.'&';

rtrim($fields_string, "&");

//open connection

$ch = curl_init();

//set the url, number of POST vars, POST data

curl_setopt($ch,CURLOPT_URL,$url);

curl_setopt($ch,CURLOPT_POST,count($fields));

curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);

curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);

//execute post

$data = curl_exec($ch);

//close connection

curl_close($ch);

//turn the string into a object

$auth_results = json_decode($data);

?>

[Burak Yiğit Kaya]

Hey Pratik,

Code is only necessary for the authentication section to obtain a "permanent" access token. I didn't go deep in your code but it looks like you're trying to send "code" with both requests(authentication/access token obtaining AND the actual API request).

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BYK

[Pratik Thakkar]

Hi BYK,

Thanks for your response.

I understand that code is only necessary for permanent access token. That is the objective. I am trying to develop a script that will run periodically to pull in comments from Disqus forum to our database.

And I seem to be stuck with this problem

Regards,

Praitk

[Burak Yiğit Kaya]

I understand and again, your solution is quite clear: do not send the code parameter unless you are requesting a permanent access token and you're good.

[Pratik Thakkar]

Thanks for your response.

I have tried that and tried again. If I retain the code parameter, then I receive the following error.

stdClass Object
(
    [code] => 2
    [response] => You must either provide a user or authenticate the user.
)

Thanks

[Burak Yiğit Kaya]

Yes, because you need to provide an `access_token` parameter which is what you get from your initial authorize/access_token request.

[Pratik Thakkar]

That is what I have done but doesn't help. I have added the access token provided on the Disqus Applicaton platform as "Your Access Token".

Also one thing I noticed on the Applicaton details page.

Use this token as the value for access_token to authenticate as xxxxx.

Do I need to add a user name as "xxxxx"? My current list of parameters are

'access_token'=>urlencode($ACCESS_TOKEN),
'code'=>urlencode($ACCESS_TOKEN),
'grant_type'=>'authorization_code',
'client_id'=>urlencode($PUBLIC_KEY),
'client_secret'=>urlencode($SECRET_KEY),
'redirect_uri'=>urlencode($redirect)

Am I missing something herer?

[Burak Yiğit Kaya]

Your request looks like the request for getting the access token. Please read the API docs for a comprehensive explanation about the authentication system: http://disqus.com/api/docs/auth/

If you manage to get your access_token successfully, the headline you are looking for in that document is "Making Requests with Tokens" to make regular API requests using the token you have obtained.