1 files changed, 99 insertions, 0 deletions
diff --git a/dom/security/test/general/file_same_site_cookies_iframe.sjs b/dom/security/test/general/file_same_site_cookies_iframe.sjs
new file mode 100644
index 0000000000..7b511257c3
--- /dev/null
+++ b/dom/security/test/general/file_same_site_cookies_iframe.sjs
@@ -0,0 +1,99 @@
+// Custom *.sjs file specifically for the needs of Bug 1454027
+
+// small red image
+const IMG_BYTES = atob(
+  "iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12" +
+    "P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="
+);
+
+const NESTED_IFRAME_NAVIGATION = `
+  <html>
+  <body>
+    <a id="testlink" href="http://mochi.test:8888/tests/dom/security/test/general/file_same_site_cookies_iframe.sjs"></a>
+    <script type="application/javascript">
+      let link = document.getElementById("testlink");
+      link.click();
+    <\/script>
+  </body>
+  </html>`;
+
+const NESTED_IFRAME_INCLUSION = `
+  <html>
+  <body>
+    <script type="application/javascript">
+    // simply passing on the message from the child to parent
+    window.addEventListener("message", receiveMessage);
+    function receiveMessage(event) {
+      window.removeEventListener("message", receiveMessage);
+      window.parent.postMessage({result: event.data.result}, '*');
+    }
+    <\/script>
+    <iframe src="http://mochi.test:8888/tests/dom/security/test/general/file_same_site_cookies_iframe.sjs"></iframe>
+  </body>
+  </html>`;
+
+function handleRequest(request, response) {
+  // avoid confusing cache behaviors
+  response.setHeader("Cache-Control", "no-cache", false);
+
+  // using startsWith and discard the math random
+  if (request.queryString.startsWith("setSameSiteCookie")) {
+    response.setHeader(
+      "Set-Cookie",
+      "myKey=mySameSiteIframeTestCookie; samesite=strict",
+      true
+    );
+    response.setHeader("Content-Type", "image/png");
+    response.write(IMG_BYTES);
+    return;
+  }
+
+  // navigation tests
+  if (request.queryString === "nestedIframeNavigation") {
+    response.write(NESTED_IFRAME_NAVIGATION);
+    return;
+  }
+
+  if (request.queryString === "nestedSandboxIframeNavigation") {
+    response.setHeader(
+      "Content-Security-Policy",
+      "sandbox allow-scripts",
+      false
+    );
+    response.write(NESTED_IFRAME_NAVIGATION);
+    return;
+  }
+
+  // inclusion tests
+  if (request.queryString === "nestedIframeInclusion") {
+    response.write(NESTED_IFRAME_INCLUSION);
+    return;
+  }
+
+  if (request.queryString === "nestedSandboxIframeInclusion") {
+    response.setHeader(
+      "Content-Security-Policy",
+      "sandbox allow-scripts",
+      false
+    );
+    response.write(NESTED_IFRAME_INCLUSION);
+    return;
+  }
+
+  const cookies = request.hasHeader("Cookie")
+    ? request.getHeader("Cookie")
+    : "";
+  response.write(`
+    <!DOCTYPE html>
+    <html>
+    <head>
+      <title>Bug 1454027 - Update SameSite cookie handling inside iframes</title>
+    </head>
+    <body>
+      <script type="application/javascript">
+        window.parent.postMessage({result: "${cookies}" }, '*');
+      </script>
+    </body>
+    </html>
+  `);
+}