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<!DOCTYPE html>
<meta charset=utf-8>
<head>
  <title>W3C Web Authentication - Attestation Conveyance</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="u2futil.js"></script>
  <script type="text/javascript" src="pkijs/common.js"></script>
  <script type="text/javascript" src="pkijs/asn1.js"></script>
  <script type="text/javascript" src="pkijs/x509_schema.js"></script>
  <script type="text/javascript" src="pkijs/x509_simpl.js"></script>
  <script type="text/javascript" src="cbor.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>

  <h1>W3C Web Authentication - Attestation Conveyance</h1>
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1428916">Mozilla Bug 1428916</a>
  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1416056">Mozilla Bug 1416056</a>

  <script class="testbody" type="text/javascript">
    "use strict";

    function getAttestationCertFromAttestationBuffer(aAttestationBuffer) {
      return webAuthnDecodeCBORAttestation(aAttestationBuffer)
      .then((aAttestationObj) => {
        is(aAttestationObj.fmt, "fido-u2f", "Is a FIDO U2F Attestation");
        let attestationCertDER = aAttestationObj.attStmt.x5c[0];
        let certDERBuffer = attestationCertDER.slice(0, attestationCertDER.byteLength).buffer;
        let certAsn1 = org.pkijs.fromBER(certDERBuffer);
        return new org.pkijs.simpl.CERT({ schema: certAsn1.result });
      });
    }

    function verifyAnonymizedCertificate(aResult) {
      return webAuthnDecodeCBORAttestation(aResult.response.attestationObject)
      .then(({fmt, attStmt}) => {
        is(fmt, "none", "Is a None Attestation");
        is(typeof(attStmt), "object", "attStmt is a map");
        is(Object.keys(attStmt).length, 0, "attStmt is empty");
      });
    }

    function verifyDirectCertificate(aResult) {
      return getAttestationCertFromAttestationBuffer(aResult.response.attestationObject)
      .then((attestationCert) => {
        let subject = attestationCert.subject.types_and_values[0].value.value_block.value;
        is(subject, "Firefox U2F Soft Token", "Subject name matches the direct Soft Token")
      });
    }

    function arrivingHereIsBad(aResult) {
      ok(false, "Bad result! Received a: " + aResult);
    }

    function expectTypeError(aResult) {
      ok(aResult.toString().startsWith("TypeError"), "Expecting a TypeError, got " + aResult);
    }

    add_task(() => {
      // Enable the softtoken.
      return SpecialPowers.pushPrefEnv({"set": [
        ["security.webauth.webauthn", true],
        ["security.webauth.webauthn_enable_softtoken", true],
        ["security.webauth.webauthn_enable_usbtoken", false],
        ["security.webauth.webauthn_enable_android_fido2", false],
        ["security.webauth.webauthn_testing_allow_direct_attestation", true],
      ]});
    });

    // Start a new MakeCredential() request.
    function requestMakeCredential(attestation) {
      let publicKey = {
        rp: {id: document.domain, name: "none", icon: "none"},
        user: {id: new Uint8Array(), name: "none", icon: "none", displayName: "none"},
        challenge: crypto.getRandomValues(new Uint8Array(16)),
        timeout: 5000, // the minimum timeout is actually 15 seconds
        pubKeyCredParams: [{type: "public-key", alg: cose_alg_ECDSA_w_SHA256}],
        attestation,
      };

      return navigator.credentials.create({publicKey});
    }

    // Test success cases for make credential.
    add_task(async () => {
      // No selection criteria should be equal to none, which means anonymized
      await requestMakeCredential()
        .then(verifyAnonymizedCertificate)
        .catch(arrivingHereIsBad);

      // Request no attestation.
      await requestMakeCredential("none")
        .then(verifyAnonymizedCertificate)
        .catch(arrivingHereIsBad);

      // Request indirect attestation, which is the same as none.
      await requestMakeCredential("indirect")
        .then(verifyAnonymizedCertificate)
        .catch(arrivingHereIsBad);

      // Request direct attestation, which will prompt for user intervention.
      await requestMakeCredential("direct")
        .then((x) => {
          if (AppConstants.platform === "android") {
            // If this is Android, the result will be anonymized (Bug 1551229)
            return verifyAnonymizedCertificate(x);
          } else {
            return verifyDirectCertificate(x);
          }
        })
        .catch(arrivingHereIsBad);
    });

    // Test failure cases for make credential.
    add_task(async () => {
      // Request a platform authenticator.
      await requestMakeCredential("unknown")
        .then(arrivingHereIsBad)
        .catch(expectTypeError);
    });
  </script>

</body>
</html>