Rust

Decode Microsoft Graph ID Token

See more Microsoft Graph Examples

Demonstrates how to decode a Microsoft Graph ID token. Rust

// 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"
// }

let json_token = chilkat::JsonObject::new();
if json_token.load_file("qa_data/tokens/microsoftGraph.json").is_err() {
    println!("Failed to load the JSON file...");
    return;
}

// Use Chilkat's JWT API to examine the id_token..
let jwt = chilkat::Jwt::new();
let id_token = json_token.string_of("id_token").unwrap_or_default();

// Extract the JOSE header..
let jose = jwt.get_header(&id_token).unwrap_or_default();

let json_header = chilkat::JsonObject::new();
let _ = json_header.load(&jose);
json_header.set_emit_compact(false);
println!("{}", json_header.emit().unwrap_or_default());

// The JOSE header looks like this:

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

let claims = jwt.get_payload(&id_token).unwrap_or_default();

let json_claims = chilkat::JsonObject::new();
let _ = json_claims.load(&claims);
json_claims.set_emit_compact(false);
println!("{}", json_claims.emit().unwrap_or_default());

// 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..
let ver = json_claims.string_of("ver").unwrap_or_default();
let iss = json_claims.string_of("iss").unwrap_or_default();
let s_sub = json_claims.string_of("sub").unwrap_or_default();
let aud = json_claims.string_of("aud").unwrap_or_default();
let exp = json_claims.int_of("exp");
let iat = json_claims.int_of("iat");
let nbf = json_claims.int_of("nbf");
let name = json_claims.string_of("name").unwrap_or_default();
let preferred_username = json_claims.string_of("preferred_username").unwrap_or_default();
let oid = json_claims.string_of("oid").unwrap_or_default();
let tid = json_claims.string_of("tid").unwrap_or_default();
let aio = json_claims.string_of("aio").unwrap_or_default();