test_meta_csp_self.html

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Test Info:

Manifest: dom/security/test/csp/mochitest.toml

<!DOCTYPE HTML>

<html>

<head>

  <title>Bug 1387871 - CSP: Test 'self' within meta csp in  data: URI iframe</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<iframe style="width:100%;" id="testframe"></iframe>

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

SimpleTest.waitForExplicitFinish();

/* Description of the test:

 * We load a data: URI into an iframe which provides a meta-csp

 * including the keyword 'self'. We make sure 'self' does not

 * allow a data: image to load.

*/

window.addEventListener("message", receiveMessage);

function receiveMessage(event) {

  window.removeEventListener("message", receiveMessage);

  is(event.data.result, "dataFrameReady", "sanity: received msg from loaded frame");

  var frame = document.getElementById("testframe");

  // make sure the img was blocked

  var img = SpecialPowers.wrap(frame).contentDocument.getElementById("testimg");

  is(img.naturalWidth, 0, "img should be blocked -  width should be 0");

  is(img.naturalHeight, 0, "img should be blocked - height should be 0");

  // sanity check, make sure 'self' translates into data

  var contentDoc = SpecialPowers.wrap(frame).contentDocument;

  // parse the cspJSON in a csp-object

  var cspOBJ = JSON.parse(contentDoc.cspJSON);

  ok(cspOBJ, "sanity: was able to parse the CSP JSON");

  // make sure we only got one policy

  var policies = cspOBJ["csp-policies"];

  is(policies.length, 1, "sanity: received one CSP policy");

  var policy = policies[0];

  var val = policy['img-src'];

  is(val.toString(), "'self'", "'self' should translate into data");

  SimpleTest.finish();

let DATA_URI = `data:text/html,

  <html>

  <head>

    <meta http-equiv="Content-Security-Policy" content="img-src 'self'">

  </head>

  <body onload="parent.postMessage({result:'dataFrameReady'},'*');">

    data: URI frame with meta-csp including 'self'<br/>

    <img id="testimg" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==" />

  </body>

  </html>`;

document.getElementById("testframe").src = DATA_URI;

</script>

</body>

</html>