Parsing callback SAML data

[joelwass]

So i'm a little confused on how the callback function should look. Should the call back function be using the passport saml middleware? As pictured below and in your ReadMe?

or should the code be structured more like this?

The issue is -- i'm getting an error with the code in the first image (your provided example code) because the post request is attempting to send another authenticate saml request as I can see in my SAML browser plugin (with an invalid NameId of course), where as if i use the code in the second image, i can get a response back but the request isn't being parsed for me.. and I'm having to parse it myself in a very ugly manner.

Thanks in advance

[artis3n]

I assume the error you see is the same one I see from the callback route as described in the first picture. The error is TypeError: Converting circular structure to JSON. Seems to be at at validateCallback (<project>/node_modules/passport-saml/lib/passport-saml/strategy.js:59:14).

At line 59 in strategy.js, we see the call self._verify(req, profile, verified);. There I lose the path of the logic.

Can I ask how you are parsing the request yourself? The project doesn't appear to be being maintained, yet we're stuck with it.

[EdouardPauw]

Hello,

I have kind of the same issue. After being redirected to my POST callback uri, this error is triggered :
"Converting circular structure to JSON\n --> starting at object with constructor 'Socket'\n | property 'parser' -> object with constructor 'HTTPParser'\n --- property 'socket' closes the circle"

I tried to add some logs in the verify, serializeUser and deserializeUser functions but none are triggered.

Does any one have a solution ? I can't figure out what I'm doing wrong .. :'(

[srd90]

@EdouardPauw You could have provided some sample code of your application and/or full stack trace.

Are you trying to stringify directly or indirectly req object. Maybe you have some log(JSON.stringify(req)) or something like that somewhere.

Have you tried some search engine?
https://www.google.com/search?q=express+Converting+circular+structure+to+JSON+socket+httpparser
Some highlights from the results:

1. TypeError: Converting circular structure to JSON expressjs/express#4311 (comment)
2. TypeError: Converting circular structure to JSON expressjs/express#4311 (comment)
3. https://stackoverflow.com/questions/66450846/nodejs-express-typeerror-converting-circular-structure-to-json

[EdouardPauw]

Thx a lot !
I succed to find the stack trace and indeed the issue was raised when we catched the error and tried to log the error and the request.
Now I cas see the real error : Invalid signature :)