PHP ActiveX

Decode Microsoft Graph ID Token

See more Microsoft Graph Examples

Demonstrates how to decode a Microsoft Graph ID token. PHP ActiveX

<?php

$success = 0;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  This example loads an id_token and decodes it.

//  Our Microsoft Graph OAuth2 token looks like this:

//  {
//    "token_type": "Bearer",
//    "scope": "openid profile User.ReadWrite Mail.ReadWrite Mail.Send Files.ReadWrite User.Read Calendars.ReadWrite Group.ReadWrite.All",
//    "expires_in": 3600,
//    "ext_expires_in": 3600,
//    "access_token": "EwCQA8l6...0HhMKYwC",
//    "refresh_token": "MCWulIvzi2yD0S...igEFn51mqcByhZtAJg",
//    "id_token": "eyJ0eXAiOiJKV1...Q7lRDaR-7A",
//    "expires_on": "1562862714"
//  }

$jsonToken = new COM("Chilkat.JsonObject");
$success = $jsonToken->LoadFile('qa_data/tokens/microsoftGraph.json');
if ($success == 0) {
    print 'Failed to load the JSON file...' . "\n";
    exit;
}

//  Use Chilkat's JWT API to examine the id_token..
$jwt = new COM("Chilkat.Jwt");
$idToken = $jsonToken->stringOf('id_token');

//  Extract the JOSE header..
$jose = $jwt->getHeader($idToken);

$jsonHeader = new COM("Chilkat.JsonObject");
$jsonHeader->Load($jose);
$jsonHeader->EmitCompact = 0;
print $jsonHeader->emit() . "\n";

//  The JOSE header looks like this:

//  {
//    "typ": "JWT",
//    "alg": "RS256",
//    "kid": "1LTMzakihiRla_8z2BEJVXeWMqo"
//  }

$claims = $jwt->getPayload($idToken);

$jsonClaims = new COM("Chilkat.JsonObject");
$jsonClaims->Load($claims);
$jsonClaims->EmitCompact = 0;
print $jsonClaims->emit() . "\n";

//  The claims look like this:

//  {
//    "ver": "2.0",
//    "iss": "https://login.microsoftonline.com/9188040d-6c67-4c5b-b112-36a304b66dad/v2.0",
//    "sub": "AAAAAAAAAAAAAAAAAAAAAHJFryd6Gydo-XtTd1nhUNQ",
//    "aud": "18c456bd-db75-43fe-9724-9e5d821c68ff",
//    "exp": 1562945513,
//    "iat": 1562858813,
//    "nbf": 1562858813,
//    "name": "Matt Chilkat",
//    "preferred_username": "matt@example.com",
//    "oid": "00000000-0000-0000-3a33-fceb9b74cc15",
//    "tid": "9188040d-6c67-4c5b-b112-36a304b66dad",
//    "aio": "DfibJqKnWC1c0FS6G ... W6pvTrQuYzyq16ghY$"
//  }
//  

//  Use this online tool to generate parsing code from sample JSON: 
//  Generate Parsing Code from JSON

//  Get each of the claims..
$ver = $jsonClaims->stringOf('ver');
$iss = $jsonClaims->stringOf('iss');
$s_sub = $jsonClaims->stringOf('sub');
$aud = $jsonClaims->stringOf('aud');
$exp = $jsonClaims->IntOf('exp');
$iat = $jsonClaims->IntOf('iat');
$nbf = $jsonClaims->IntOf('nbf');
$name = $jsonClaims->stringOf('name');
$preferred_username = $jsonClaims->stringOf('preferred_username');
$oid = $jsonClaims->stringOf('oid');
$tid = $jsonClaims->stringOf('tid');
$aio = $jsonClaims->stringOf('aio');

?>