TheNetworg/oauth2-azure

V2 validateTokenClaims and AUD Prefix

Opened this issue · 1 comments

Hello!

oauth2-azure v1.x supported URI form of Client ID:

$provider = new Azure(['clientId' => 'api://XXXX-XXXXX']);

In oauth2-azure v.2 src/Provider/Azure/validateAccessToken/getJwtVerificationKeys/getOpenIdConfiguration
we have:

$openIdConfigurationUri = $this->urlLogin . $tenant . $versionInfix . '/.well-known/openid-configuration?appid=' . $this->clientId;

this requires us to put clientID without prefix in Provider init:

$provider = new Azure(['clientId' => 'XXXX-XXXXX']);

Otherwise, with URI form, we get error from Azure:
"invalid_request AADSTS90112: Application identifier is expected to be a GUID"

But then we can't validate access tokens tokens from frontend app cause AUD claim is always in URI form and is
different from ClientId

'api://XXXX-XXXXX' is not equal to 'XXXX-XXXXX'

public function validateTokenClaims($tokenClaims) {
    if ($this->getClientId() != $tokenClaims['aud']) {
        throw new \RuntimeException('The client_id / audience is invalid!');
    }
   ....
}

it always fails

There should be fallback to URI form of the Client ID

Hi,

This value is managed by the manifest of your application in Azure.
Go to the Azure portal of your application > Manage > Manifest.
The value of accessTokenAcceptedVersion is probably set to null.
If you set the value to 2 then the AUD won't be prefixed.

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