CODEWITHSUNDEEP
trelloauthenticationoauth
Golo Roden
Golo Roden

Reputation: 150624

Access Trello programmatically using OAuth

I'm currently trying to access a private Trello board using a Node.js web application. What I want to achieve is to create new cards. Unfortunately, I'm stuck in the process of receiving a token.

I use the node-oath library and embed it as follows:

var OAuth = require('oauth').OAuth,
    oauth = new OAuth('https://trello.com/1/OAuthGetRequestToken',
                      'https://trello.com/1/OAuthGetAccessToken',
                      myKey,
                      myOAuthSecret,
                      '1.0',
                      undefined,
                      'PLAINTEXT');

Afterwards, I try to get a token by calling:

oauth.getOAuthRequestToken(function (error, oauth_token, oauth_secret, results) {
  if (error) return console.log('1: ' + JSON.stringify(error));
    oauth.getOAuthAccessToken(oauth_token, oauth_secret, function (error, oauth_access_token, oauth_access_token_secret, access_results) {
      if (error) return console.log('2: ' + JSON.stringify(error));
      // ...

When I run this code, I always get the following error message:

1: {"statusCode":500,"data":"Invalid Signature"}

So, obviously there is something wrong with the first OAuth request. I've seen that Trello also supports HMAC-SHA1. When I use it instead of PLAINTEXT, the first request succeeds, but the second fails as I have not specified an oauth_verifier.

Unfortunately I do not have the slightest idea of how to provide this verifier. I've read the OAuth RFC, but that didn't really help me.

Basically, I do not actually need HMAC-SHA1, PLAINTEXT would be fine.

Does anybody have an idea what might be wrong?

PS: I've read on the Trello developer board that once there was a bug which did not allow Trello to access the key sent within the body, so they advised you to send it using the query string. But even if I change the first codeblock to

var OAuth = require('oauth').OAuth,
    oauth = new OAuth('https://trello.com/1/OAuthGetRequestToken?key=' + myKey,
                      'https://trello.com/1/OAuthGetAccessToken',
                      myKey,
                      myOAuthSecret,
                      '1.0',
                      undefined,
                      'PLAINTEXT');

it doesn't change anything at all :-/

Any ideas?

Upvotes: 4

Views: 5908

Answers (1)

Brett
Brett

Reputation: 3538

The node-trello package from npm (linked below) is oauth'ing fine for me, and I didn't find any problems with your code by inspection; what I would do if I were you would be to install node-trello and use that as a working example; if that doesn't work, then maybe you need to re-generate your developer key.

node-trello:

https://github.com/adunkman/node-trello

https://github.com/adunkman/node-trello/blob/master/lib/trello-oauth.coffee

Upvotes: 5

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