<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Bug 663570 - Implement Content Security Policy via <meta> tag</title>
  <!-- Including SimpleTest.js so we can use waitForExplicitFinish !-->
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<iframe style="width:100%;" id="testframe" src="file_meta_element.html"></iframe>

<script class="testbody" type="text/javascript">

/* Description of the test:
 * The test is twofold:
 * First, by loading a page using meta csp (into an iframe) we make sure that
 * images get correctly blocked as the csp policy includes "img-src 'none'";
 *
 * Second, we make sure meta csp ignores the following directives:
 *   * report-uri
 *   * frame-ancestors
 *   * sandbox
 *
 * Please note that the CSP sanbdox directive (bug 671389) has not landed yet.
 * Once bug 671389 lands this test will fail and needs to be updated.
 */

SimpleTest.waitForExplicitFinish();
const EXPECTED_DIRS = ["img-src", "script-src"];

function finishTest() {
  window.removeEventListener("message", receiveMessage);
  SimpleTest.finish();
}

function checkResults(result) {
  is(result, "img-blocked", "loading images should be blocked by meta csp");

  try {
    // get the csp in JSON notation from the principal
    var frame = document.getElementById("testframe");
    var contentDoc = SpecialPowers.wrap(frame.contentDocument);
    var cspJSON = contentDoc.cspJSON;
    
    ok(cspJSON, "CSP applied through meta element");

    // parse the cspJSON in a csp-object
    var cspOBJ = JSON.parse(cspJSON);
    ok(cspOBJ, "was able to parse the JSON");

    // make sure we only got one policy
    var policies = cspOBJ["csp-policies"];
    is(policies.length, 1, "there should be one policy applied");

    // iterate the policy and make sure to only encounter
    // expected directives.
    var policy = policies[0];
    for (var dir in policy) {
      // special case handling for report-only which is not a directive
      // but present in the JSON notation of the CSP.
      if (dir === "report-only") {
        continue;
      }
      var index = EXPECTED_DIRS.indexOf(dir);
      isnot(index, -1, "meta csp contains directive: " + dir + "!");

      // take the element out of the array so we can make sure
      // that we have seen all the expected values in the end.
      EXPECTED_DIRS.splice(index, 1);
    }
    is(EXPECTED_DIRS.length, 0, "have seen all the expected values");
  }
  catch (e) {
    ok(false, "uuh, something went wrong within meta csp test");
  }

  finishTest();
}

// a postMessage handler used to bubble up the onsuccess/onerror state
// from within the iframe.
window.addEventListener("message", receiveMessage);
function receiveMessage(event) {
  checkResults(event.data.result);
}

</script>
</body>
</html>
