Nuxt•8mo ago

Issue reliably getting cookies in API Routes.

How can I reliably get a cookie in the <script> part of one of my .vue files? It works if I click into the URL bar and hit enter, but not when I refresh or get redirected from an external webpage, or using a link inside of my app.

86 Replies

Sandvich•8mo ago

That is way too little information for anyone to help you. You haven't mentioned any packages, functions or shown any code

owljackob•8mo ago

Exactly.

Optio1OP•8mo ago

I am trying to use jsonwebtokens package to put my own token in a cookie. I realized the way I was doing it was not the best but it did work when I refreshed. Here is the code I used to have:

<script setup lang="ts">
    const stateCookie = useCookie('state')
    console.log(stateCookie.value)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct')
      } else {
        console.log('state is incorrect')
      }
    }
</script>

<script setup lang="ts">
    const stateCookie = useCookie('state')
    console.log(stateCookie.value)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct')
      } else {
        console.log('state is incorrect')
      }
    }
</script>

I since moved to using middleware, however, im still stuck on how to get the cookie in the middleware. This is what I have for middleware code right now.

export default () => {
    console.log('middleware')
    const stateCookie = useCookie('state')
    console.log(stateCookie.value)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct token is ' + route.query.code)
      } else {
        console.log('state is incorrect')
      }
    }
  }

export default () => {
    console.log('middleware')
    const stateCookie = useCookie('state')
    console.log(stateCookie.value)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct token is ' + route.query.code)
      } else {
        console.log('state is incorrect')
      }
    }
  }

I did also try

export default (event: any) => {
    console.log('middleware')
    const stateCookie = getCookie(event, 'state')
    console.log(stateCookie)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct token is ' + route.query.code)
      } else {
        console.log('state is incorrect')
      }
    }
  }

export default (event: any) => {
    console.log('middleware')
    const stateCookie = getCookie(event, 'state')
    console.log(stateCookie)
    const jwt = require('jsonwebtoken');
    const route = useRoute()
    if (stateCookie){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie, secret)
      if (decoded.state === route.query.state) {
        console.log('state is correct token is ' + route.query.code)
      } else {
        console.log('state is incorrect')
      }
    }
  }

but getCookie is undefined and using

import { defineEventHandler, setCookie, getCookie } from "h3";
export default defineEventHandler(event => {
  let stateCookie = getCookie(event, 'state')
  console.log(stateCookie)
})

import { defineEventHandler, setCookie, getCookie } from "h3";
export default defineEventHandler(event => {
  let stateCookie = getCookie(event, 'state')
  console.log(stateCookie)
})

gives me Cannot read properties of undefined (reading 'req')

Sandvich•8mo ago

export default defineEventHandler(event => {
  let stateCookie = getCookie(event, 'state')
  console.log(stateCookie)
})

export default defineEventHandler(event => {
  let stateCookie = getCookie(event, 'state')
  console.log(stateCookie)
})

So this code looks absolutely fine and the 'req' part tells me it might be an error in how you're fetching this endpoint

export default (event: any) => {
    console.log('middleware')
    const stateCookie = getCookie(event, 'state')
...

export default (event: any) => {
    console.log('middleware')
    const stateCookie = getCookie(event, 'state')
...

I have no idea what this could be doing as nowhere in the documentation do you set up request handlers or middleware like this, that's just a function https://nuxt.com/docs/guide/directory-structure/middleware And what's wrong with the first block of code? That should work as long as you set the cookie correctly. And why are you comparing it to the query param?

Nuxt

middleware/ · Nuxt Directory Structure

Nuxt provides middleware to run code before navigating to a particular route.

Optio1OP•8mo ago

Comparing it to query param to check the state for oauth CSRF validation. The first block of code works perfectly fine ONLY when I click into the url bar and hit enter. Otherwise it gives me this error: The error is because the cookie is undefined, unless I click into the url bar and hit enter.

Sandvich•8mo ago

I don't understand how that's even possible to get this error because you're doing

    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)

    if (stateCookie.value){
      const secret = "somevalue"
      var decoded = jwt.verify(stateCookie.value, secret)

And somehow hitting this codeblock in jwt.verify

Sandvich•8mo ago

are you certain that's the code you're using and getting this error?

Optio1OP•8mo ago

I guess I should clarify, if I remove the if statement I get that error, otherwise the cookie is just undefined and my logic fails anyways.

Optio1OP•8mo ago

the exact code I used to get that error

Optio1OP•8mo ago

Sandvich•8mo ago

oh this is peculiar

Optio1OP•8mo ago

oh also hitting refresh does not work

Optio1OP•8mo ago

Sandvich•8mo ago

hmm all this weird jankiness could be pointing to some odd browser quirk or the dev environment. Another thought I have is that the cookie hasn't even been set by the time the component renders. Are you correctly setting the cookie in your api oauth callback and only then redirecting to the app?

Optio1OP•8mo ago

Yes, cookie is set in the login page before the redirect to discord for oauth.

<script setup lang="ts">

var jwt = require('jsonwebtoken')
const secret = ""
function stringGen() {
  var text = ""
  let len = 20
  var charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
  
  for (var i = 0; i < len; i++)
    text += charset.charAt(Math.floor(Math.random() * charset.length))
  
  return text
}
var state = stringGen()
var token = jwt.sign({ state: state }, secret);

const cookie = useCookie('state', {
  maxAge: 15*60,
  secure: true,
  sameSite: 'strict',
  httpOnly: true
})
cookie.value = token

await navigateTo(`https://discord.com/oauth2/authorize?client_id=773293692672016506&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&scope=identify+guilds+email&state=${state}`, {
  external: true
})
</script>

<script setup lang="ts">

var jwt = require('jsonwebtoken')
const secret = ""
function stringGen() {
  var text = ""
  let len = 20
  var charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
  
  for (var i = 0; i < len; i++)
    text += charset.charAt(Math.floor(Math.random() * charset.length))
  
  return text
}
var state = stringGen()
var token = jwt.sign({ state: state }, secret);

const cookie = useCookie('state', {
  maxAge: 15*60,
  secure: true,
  sameSite: 'strict',
  httpOnly: true
})
cookie.value = token

await navigateTo(`https://discord.com/oauth2/authorize?client_id=773293692672016506&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&scope=identify+guilds+email&state=${state}`, {
  external: true
})
</script>

this does successfully set the cookie, I can see it even on the error page. to be fair, I did have the same issue using the normal redirect for the login page. but putting external in the link fixed it.

Optio1OP•8mo ago

Sandvich•8mo ago

Can you set cookies like that? Don't u need setCookie?

Optio1OP•8mo ago

only in middleware, the cookie setting works flawlessly. documentation gives this example:

Optio1OP•8mo ago

in middleware this is the example, however I find it very lacking as the code provided does not work in the slightest for me, and there are no other examples.

Optio1OP•8mo ago

wait thats an api route sorry give me a second, im going to try and convert this to an api route instead of a page. LOL API routes work all I did was

export default defineEventHandler(event => {
    let stateCookie = getCookie(event, 'state')
    console.log(stateCookie)
    return {
      cookie: stateCookie
    }
  })

export default defineEventHandler(event => {
    let stateCookie = getCookie(event, 'state')
    console.log(stateCookie)
    return {
      cookie: stateCookie
    }
  })

inside of server/api/callback.ts I should convert login to an api route as well. Thanks for troubleshooting with me though @Sandvich!

Sandvich•8mo ago

Glad you figured it out

Optio1OP•8mo ago

🤦‍♂️ Im at a loss. The cookie is undefined now, untill I hit enter in the url bar again. Also login does not work with internal links, only external ones work. I confirmed this issue is not browser specific, I tried it with edge, edge canary, and firefox. I am still hitting this issue, would this be better addressed on github? I am able to reproduce this issue with the default nuxt app only adding 2 files and the API folder.

Optio1OP•8mo ago

only modified things is the API folder and callback.ts and login.ts

Optio1OP•8mo ago

callback.ts

import jwt from 'jsonwebtoken';
export default defineEventHandler(event => {
    console.log("Callback")
    let stateCookie = getCookie(event, 'state')
    const secret = "hEl2MLIWr3JU/J5kAnZ8thhkEmZg9DLbBdBVtkpjClI="
    console.log("Got Cookie " + stateCookie)
    if (stateCookie === undefined) {
      console.log("State Cookie is undefined")
      // return sendRedirect(event, "/api/login", 307)
    }
    console.log("State Cookie Checked")
    var decoded = jwt.verify(stateCookie, secret)
    deleteCookie(event, 'state')
    console.log("Deleted Cookie")
    if (decoded.state === getQuery(event).state) {
      return {
        status: 200,
        body: "State Validation Passed, You're Safe!"
      }
    } else {
      return {
        status: 401,
        body: "State Validation Failed, You're Not Safe!"
      }
    }
  })

import jwt from 'jsonwebtoken';
export default defineEventHandler(event => {
    console.log("Callback")
    let stateCookie = getCookie(event, 'state')
    const secret = "hEl2MLIWr3JU/J5kAnZ8thhkEmZg9DLbBdBVtkpjClI="
    console.log("Got Cookie " + stateCookie)
    if (stateCookie === undefined) {
      console.log("State Cookie is undefined")
      // return sendRedirect(event, "/api/login", 307)
    }
    console.log("State Cookie Checked")
    var decoded = jwt.verify(stateCookie, secret)
    deleteCookie(event, 'state')
    console.log("Deleted Cookie")
    if (decoded.state === getQuery(event).state) {
      return {
        status: 200,
        body: "State Validation Passed, You're Safe!"
      }
    } else {
      return {
        status: 401,
        body: "State Validation Failed, You're Not Safe!"
      }
    }
  })

import jwt from 'jsonwebtoken';
export default defineEventHandler(event => {
    const secret = "hEl2MLIWr3JU/J5kAnZ8thhkEmZg9DLbBdBVtkpjClI="
    function stringGen() {
        var text = ""
        let len = 20
        var charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

        for (var i = 0; i < len; i++)
          text += charset.charAt(Math.floor(Math.random() * charset.length))

        return text
    }
    var state = stringGen()
    var token = jwt.sign({ state: state }, secret);
    setCookie(event, 'state', token, {
      maxAge: 15*60,
      secure: true,
      sameSite: 'strict',
      httpOnly: true
    })
    return sendRedirect(event, `https://discord.com/oauth2/authorize?client_id=773293692672016506&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A3001%2Fapi%2Fcallback&scope=identify+guilds+email&state=${state}`, 307)
  })

import jwt from 'jsonwebtoken';
export default defineEventHandler(event => {
    const secret = "hEl2MLIWr3JU/J5kAnZ8thhkEmZg9DLbBdBVtkpjClI="
    function stringGen() {
        var text = ""
        let len = 20
        var charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

        for (var i = 0; i < len; i++)
          text += charset.charAt(Math.floor(Math.random() * charset.length))

        return text
    }
    var state = stringGen()
    var token = jwt.sign({ state: state }, secret);
    setCookie(event, 'state', token, {
      maxAge: 15*60,
      secure: true,
      sameSite: 'strict',
      httpOnly: true
    })
    return sendRedirect(event, `https://discord.com/oauth2/authorize?client_id=773293692672016506&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A3001%2Fapi%2Fcallback&scope=identify+guilds+email&state=${state}`, 307)
  })

Optio1OP•8mo ago

github repo with the minimal reporoduction https://github.com/Optio1/nuxtbugreproduction

GitHub

GitHub - Optio1/nuxtbugreproduction

Contribute to Optio1/nuxtbugreproduction development by creating an account on GitHub.

Optio1OP•8mo ago

Also confirmed this still has problems after build. But the clicking into url bar and hitting enter works in the build as well.

Flo•8mo ago

Just a thing to remember: If your cookie is httpOnly, you can't access it in js.

Optio1OP•8mo ago

Even removing httpOnly I still have the same symptoms. HTTP only shouldnt matter in this case, because I need to get the cookie server side. I did also try adding if (process.client) return; and wrapping the entire code in if (process.server) {}.

Flo•8mo ago

You're using useFetch or $fetch to get that endpoint?

Optio1OP•8mo ago

neither, redirecting directly to it.

Flo•8mo ago

(Sorry, I did not read the full story)

Optio1OP•8mo ago

thats alright, its a long one. Here is a video of the issue. I tried with pages, and api routes.

Optio1OP•8mo ago

https://cdn.discordapp.com/attachments/1221600122841071656/1221909820118925362/Window_3-25-2024_2-52-49_PM.mp4?ex=66144b33&is=6601d633&hm=b7a98c3a51bb2843263a6dbb213e08053812eaeda10c9ca42ff190e76cb97e23&

Optio1OP•8mo ago

Il record another using the api routes

Flo•8mo ago

Wait a sec for the recording, please open the chrome debug tools, to the network tab, filter for documents, preserve logs and show the request chain. Preferrably with some seconds between the requests so I can get some details through the compression. The interesting things are the request and response headers of each request.

Optio1OP•8mo ago

will do I can also just do this hold on

Flo•8mo ago

(replies might take a while, my pizza is about to ring the doorbell) Oh, and the obvious question: Why not using nuxt-auth or similar? There is support for discord sso

Optio1OP•8mo ago

I didint like the lack of documentation on how to use it, and its black boxy, ive built my own oauth halding before and just prefer to use that.

Flo•8mo ago

that's okay 🙂 yeah, docs could be improved. It's basically just a wrapper for authjs, which actually works pretty well

Optio1OP•8mo ago

https://share.firefox.dev/3TxKJXV

Flo•8mo ago

ouh, that's nice!

Optio1OP•8mo ago

am realizing thats mostly discord....

Flo•8mo ago

that's only discord 😄

Optio1OP•8mo ago

yea its not capturing localhost il grab a recording of the network tab

Flo•8mo ago

and more interesting: It has a request to that error reporting proxy. Might not be important though.

Optio1OP•8mo ago

no delay in requests but I didnt see exactly where to do that

Flo•8mo ago

doesn't the inspector show any details? like request headers?

Optio1OP•8mo ago

yes

Flo•8mo ago

I'd really recommend using chromium/similar for that kind of debugging.

Optio1OP•8mo ago

ive got edge if that has it or I can install chrome

Flo•8mo ago

edge is fine

Optio1OP•8mo ago

full disclosure im not very familar with chrome dev stuff

Flo•8mo ago

doesn't matter 😄 I can setup an own test once I devoured those pizza slices

Optio1OP•8mo ago

Does a .har file help you at all? I ran the site in edge with persist logs and downloaded them to an har file.

Flo•8mo ago

It should, yeah. Be aware, it may contain secrets, like cookies. Which is what we're interested in. Better share via dm.

Optio1OP•8mo ago

not too woried, the cookie has a randomly generated state for my app and thats it.

Flo•8mo ago

alright, send it over

Optio1OP•8mo ago

localhost.har

Flo•8mo ago

oh boy. I need some minutes to jump through that

Optio1OP•8mo ago

Just because im paranoied... I changed my discord password because thats the only other thing that I was authenticated with in edge.

Flo•8mo ago

😄

Optio1OP•8mo ago

It cant hurt you know 😂

Flo•8mo ago

True. Because I can see your discord jwt 😄

Optio1OP•8mo ago

Figured that may be the case with the whole, routing to discord and authenticating for oauth thing.

Flo•8mo ago

Alright. I see the jwt, I also see an OPTIONS request to your callback. I also see that options request as get request. Both return 500 At the end, I see your manual get request, with the same parameters. This one has a state-cookie.

Optio1OP•8mo ago

Ah so do I just need to enable cors is that the whole problem

Flo•8mo ago

that could be oh, your login page is actually setting that state cookie

Optio1OP•8mo ago

yes not cors, or atleast not that I would expect, I added the nuxt-security module which should by default add cors to everything.

Flo•8mo ago

I'm somehow missing the redirect from discord back to localhost

Optio1OP•8mo ago

🤷‍♂️ maybe I should also note this happens when setting the cookie as well if I click a button in my nuxt app that redirects to the login page that is not expicitly tagged as external, it has the same error, but if I set it to external it works fine.

Optio1OP•8mo ago

Flo•8mo ago

well, you'll have the same issue with useFetch and $fetch. They don't send the cookies. I think that's why hard refreshing the page works

Optio1OP•8mo ago

with fetch and useFetch you can do with credentials = true and then it sends the cookies

Flo•8mo ago

what? The docs show a more complex thing for that 😄

Optio1OP•8mo ago

really?

Flo•8mo ago

https://nuxt.com/docs/examples/advanced/use-custom-fetch-composable

Nuxt

Use Custom Fetch Composable · Nuxt Examples

This example shows a convenient wrapper for the useFetch composable from nuxt. It allows you to customize the fetch request with default values and user authentication token.

Flo•8mo ago

I built myself an easier one:

export async function useBetterFetch<T>(
  url: string,
  options: Parameters<typeof $fetch>[1] = {}
): Promise<T> {
  const requestHeaders = useRequestHeaders(["cookie"]);
  const headers = { ...options.headers, ...requestHeaders };
  return $fetch<T>(url, { ...options, headers });
}

export async function useBetterFetch<T>(
  url: string,
  options: Parameters<typeof $fetch>[1] = {}
): Promise<T> {
  const requestHeaders = useRequestHeaders(["cookie"]);
  const headers = { ...options.headers, ...requestHeaders };
  return $fetch<T>(url, { ...options, headers });
}

had this issue with api calls and missing jwt

Optio1OP•8mo ago

I tried this using the vue page script components as well, same problem. I mean, I can do something like that custom fetch with the plugins that just returns the token if thats going to work. It just seems unnessesarily complex for something that seems like the current code should just work for.

Flo•8mo ago

I guess that's why nuxt-auth uses a session-endpoint to get its own data 😄

Optio1OP•8mo ago

yea, il try the plugin way if that yeilds the same results IDK what to do

Flo•8mo ago

we're talking about client redirect, right? ah, my brain... I wanted to ask if you tried attaching a debugger to see exactly what's happening...

Optio1OP•8mo ago

whats weirder is the login api route when navigating to it renders a 404 error untill I click into it and hit enter, unless its an external link. I can try attaching a debugger tomorrow here. Ok so it works if I set the link in the api route to redirect directly to the app and skip discord which for obvious reasons is not a solution but it is progress 🤦‍♂️ 🤦‍♂️ sameSite: lax fixes the cooke not appearing on discords redirect still does not account for why I need an external link to get to /api/login or it returns 404 but thats alteast work arroundable

Optio1OP•8mo ago

I found https://github.com/nuxt/nuxt/issues/20552 🤦‍♂️,

GitHub

Session data not available on external redirect to nuxt · Issue #20...

Environment Operating System: Linux Node Version: v18.12.1 Nuxt Version: 3.4.2 Nitro Version: 2.3.3 Reproduction Unfortunately I'm not able to provide a reproduction, since it relies on externa...

Gaming

Programming

Issue reliably getting cookies in API Routes.