Created
November 29, 2023 08:08
-
-
Save PhantomKnight287/4859e6c365653b680d69ffa046f56506 to your computer and use it in GitHub Desktop.
Linkedin Oauth in a nestjs application.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import jose from 'node-jose'; | |
| const urlToGetLinkedInAccessToken = | |
| 'https://www.linkedin.com/oauth/v2/accessToken'; | |
| export type LinkedInUser = { | |
| iss: string; | |
| aud: string; | |
| iat: number; | |
| exp: number; | |
| sub: string; | |
| name: string; | |
| given_name: string; | |
| family_name: string; | |
| picture: string; | |
| email: string; | |
| email_verified: string; | |
| locale: string; | |
| }; | |
| export async function getLinkedInVerificationKeyStructure() { | |
| const req = await fetch('https://www.linkedin.com/oauth/openid/jwks'); | |
| if (!req.ok) throw new Error('Failed to fetch key from LinkedIn'); | |
| const data = (await req.json()) as { | |
| keys: Array<{ kty: string; e: string; kid: string; n: string }>; | |
| }; | |
| return data.keys; | |
| } | |
| export async function getAccessToken(code: string) { | |
| const params = new URLSearchParams({ | |
| grant_type: 'authorization_code', | |
| code: code, | |
| redirect_uri: `${process.env.APPLICATION_URL}/auth/oauth/redirect/linkedin`, | |
| client_id: process.env.LINKEDIN_CLIENT_ID, | |
| client_secret: process.env.LINKEDIN_CLIENT_SECRET, | |
| }); | |
| const req = await fetch( | |
| `${urlToGetLinkedInAccessToken}?${params.toString()}`, | |
| { | |
| method: 'POST', | |
| headers: { | |
| 'Content-Type': 'application/x-www-form-urlencoded', | |
| }, | |
| }, | |
| ); | |
| if (!req.ok) throw new Error('Failed to get access token'); | |
| const data = (await req.json()) as { | |
| access_token: string; | |
| expires_in: number; | |
| scope: string; | |
| token_type: string; | |
| id_token: string; | |
| }; | |
| return data.id_token; | |
| } | |
| async handleLinkedInOauthRedirect(code: string, res: Response) { | |
| const keys = await getLinkedInVerificationKeyStructure(); | |
| const accessToken = await getAccessToken(code); | |
| const keyStore = jose.JWK.asKeyStore(keys); | |
| const decodedToken = decode(accessToken) as LinkedInUser; | |
| const key = (await keyStore).get(decodedToken['kid']); | |
| await jose.JWS.createVerify(key).verify(accessToken); | |
| const user = await createUserIfNotExists({ | |
| email: decodedToken.email, | |
| name: decodedToken.name.replaceAll(' ', ' '), | |
| }); | |
| const token = sign({ id: user.id }, process.env.JWT_SECRET); | |
| return res.redirect( | |
| `${process.env.HOST_URL}?token=${token}&userType=freelancer`, | |
| ); | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment