1 files changed, 138 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug856978.js b/netwerk/test/unit/test_bug856978.js
new file mode 100644
index 0000000000..607b392473
--- /dev/null
+++ b/netwerk/test/unit/test_bug856978.js
@@ -0,0 +1,138 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This test makes sure that the authorization header can get deleted e.g. by
+// extensions if they are observing "http-on-modify-request". In a first step
+// the auth cache is filled with credentials which then get added to the
+// following request. On "http-on-modify-request" it is tested whether the
+// authorization header got added at all and if so it gets removed. This test
+// passes iff both succeeds.
+
+"use strict";
+
+const { HttpServer } = ChromeUtils.importESModule(
+  "resource://testing-common/httpd.sys.mjs"
+);
+
+var notification = "http-on-modify-request";
+
+var httpServer = null;
+
+var authCredentials = "guest:guest";
+var authPath = "/authTest";
+var authCredsURL = "http://" + authCredentials + "@localhost:8888" + authPath;
+var authURL = "http://localhost:8888" + authPath;
+
+function authHandler(metadata, response) {
+  if (metadata.hasHeader("Test")) {
+    // Lets see if the auth header got deleted.
+    var noAuthHeader = false;
+    if (!metadata.hasHeader("Authorization")) {
+      noAuthHeader = true;
+    }
+    Assert.ok(noAuthHeader);
+  }
+  // Not our test request yet.
+  else if (!metadata.hasHeader("Authorization")) {
+    response.setStatusLine(metadata.httpVersion, 401, "Unauthorized");
+    response.setHeader("WWW-Authenticate", 'Basic realm="secret"', false);
+  }
+}
+
+function RequestObserver() {
+  this.register();
+}
+
+RequestObserver.prototype = {
+  register() {
+    info("Registering " + notification);
+    Services.obs.addObserver(this, notification, true);
+  },
+
+  QueryInterface: ChromeUtils.generateQI([
+    "nsIObserver",
+    "nsISupportsWeakReference",
+  ]),
+
+  observe(subject, topic, data) {
+    if (topic == notification) {
+      if (!(subject instanceof Ci.nsIHttpChannel)) {
+        do_throw(notification + " observed a non-HTTP channel.");
+      }
+      try {
+        subject.getRequestHeader("Authorization");
+      } catch (e) {
+        // Throw if there is no header to delete. We should get one iff caching
+        // the auth credentials is working and the header gets added _before_
+        // "http-on-modify-request" gets called.
+        httpServer.stop(do_test_finished);
+        do_throw("No authorization header found, aborting!");
+      }
+      // We are still here. Let's remove the authorization header now.
+      subject.setRequestHeader("Authorization", null, false);
+    }
+  },
+};
+
+var listener = {
+  onStartRequest: function test_onStartR(request) {},
+
+  onDataAvailable: function test_ODA() {
+    do_throw("Should not get any data!");
+  },
+
+  onStopRequest: function test_onStopR(request, status) {
+    if (current_test < tests.length - 1) {
+      current_test++;
+      tests[current_test]();
+    } else {
+      do_test_pending();
+      httpServer.stop(do_test_finished);
+    }
+    do_test_finished();
+  },
+};
+
+function makeChan(url) {
+  return NetUtil.newChannel({
+    uri: url,
+    loadUsingSystemPrincipal: true,
+  }).QueryInterface(Ci.nsIHttpChannel);
+}
+
+var tests = [startAuthHeaderTest, removeAuthHeaderTest];
+
+var current_test = 0;
+
+// Must create a RequestObserver for the test to pass, we keep it in memory
+// to avoid garbage collection.
+// eslint-disable-next-line no-unused-vars
+var requestObserver = null;
+
+function run_test() {
+  httpServer = new HttpServer();
+  httpServer.registerPathHandler(authPath, authHandler);
+  httpServer.start(8888);
+
+  tests[0]();
+}
+
+function startAuthHeaderTest() {
+  var chan = makeChan(authCredsURL);
+  chan.asyncOpen(listener);
+
+  do_test_pending();
+}
+
+function removeAuthHeaderTest() {
+  // After caching the auth credentials in the first test, lets try to remove
+  // the authorization header now...
+  requestObserver = new RequestObserver();
+  var chan = makeChan(authURL);
+  // Indicating that the request is coming from the second test.
+  chan.setRequestHeader("Test", "1", false);
+  chan.asyncOpen(listener);
+
+  do_test_pending();
+}