Discord OAuth: Unsupported Grant Type

Code Help Node JS
1

Hello everyone. I’m attempting to get the OAuth data from the user who authorizes from my discord OAuth URL:

import express, { Request, Response } from "express";
import axios from "axios";

const clientId = "CLIENT_ID"
const clientSecret = process.env.discordClientSecret;


const router = express.Router()

router.get("/discord/users/user-info", async (req: Request, res: Response) => {
	const code: any = req.query.code;

	const params = new URLSearchParams()
	params.append('client_id', clientId);
	params.append('client_secret', clientSecret);
	params.append('code', code);
	params.append('grant_type', 'authorization_code');
	params.append('redirect_uri', 'https://api.valiantwind.dev/discord/users/user-info');
	params.append('scope', 'identify');

	if (code) {
		try {
			await axios.post('https://discord.com/api/oauth2/token', {
				data: params.toString(),
				headers: {
					'Content-Type': 'application/x-www-form-urlencoded',
				},
			}).then(response => {
				console.log(response.data)
			})
		} catch (error) {
			console.error(error);
		}
	}
	return res.sendFile(__dirname + "/discord-user-info.html")

})


export default router;

but I keep on getting the error “unsupported_grant_type”. I know the grant type is correct, and I’ve looked online but I can’t seem to find the solution. Can someone help me with this please?

The OAuth link works, and I get redirected back, but I still get the error after I get redirected.

1 Like
2

Probably because you don’t use the OAuth API to get the user information, you actually just use https://discord.com/api/users/@me. Here’s a Python example of the r/q:

import requests

def _info(token: str = ""):
    return requests.get(
        "https://discord.com/api/users/@me",
        headers={"Authorization": f"Bearer {token}"},
    )

print(
  _info("the oauth user token")
)
3

Right now I’m just attempting to get the refresh and access token. The userinfo part hasn’t come yet.

4

I don’t remember there being a scope param hmm.

5

Dang you’re right. I’m a fool. Let me try removing that. If that’s the reason, then the error message is very misleading.

6

Yeah b/c everything looks correct, from the last time I touched OAuth API (couple months ago) nothing seemed to change so.

7

I still get the same error after removing the scope :confused:

8

Idk but here’s a Python Discord OAuth API wrapper:

import requests

class DisOAuther:
    def __init__(
      self, 
      _client_id, 
      _client_secret, 
      _redirect_uri, 
      _guild_id
    ):
        self._client_id = _client_id
        self._client_secret = _client_secret
        self._redirect_uri = _redirect_uri
        self._guild_id = _guild_id
        self._session = requests.Session()

    def oauth(self, code: str):
        _res = self._session.post(
            "https://discord.com/api/oauth2/token",
            headers={"Content-Type": "application/x-www-form-urlencoded"},
            data={
                "client_id": self._client_id,
                "client_secret": self._client_secret,
                "grant_type": "authorization_code",
                "code": code,
                "redirect_uri": self._redirect_uri,
            },
        )
        if "Cloudflare" in _res.text:
            return "IP Blocked"
        else:
            return _res.json()["access_token"]

    def guild_pull(self, bot_token: str, user_token: str, user_id: int):
        _res = self._session.put(
            f"https://discord.com/api/guilds/{self._guild_id}/members/{user_id}",
            headers={
                "Authorization": f"Bot {bot_token}",
                "Content-Type": "application/json",
            },
            json={"access_token": user_token},
        ).json()
        return _res

    def get_userinfo(self, token: str):
        _res = self._session.get(
            "https://discord.com/api/users/@me",
            headers={
                "Authorization": f"Bearer {token}",
                "Content-Type": "application/json",
            },
        )
        return _res.json()
9

That doesn’t help me at all since I don’t code in Python…

2 Likes
10

Have you tried looking at this?

11

It has all required data, endpoints, headers, etc. Should be easy to convert the code to Node JS.

12

Not really, since I have zero experience in Python :confused:

13

Your logic doesn’t make sense, it presumes an intermediate-level experience in both JS and Python.

1 Like
14

Is it that hard, my bad I don’t know b/c I don’t find it that hard to copy certain code from other langs over to Python :).

15

Maybe for you, but not for me. You shouldn’t assume others have the same skillset as you.

Can anyone else help me fix the issue please?

1 Like
16

Do you look at the link @Nicolello sent, it seems promising.

17

Yes, and the provided solution from the link didn’t help me. Otherwise, I would’ve already marked their reply as the solution for the post.

1 Like
18

For some reason, switching from axios to undici’s request fixed the issue. Thanks for the help everyone.

3 Likes
19

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