Add m-esr52 at 52.6.0

16 files changed, 715 insertions, 0 deletions

diff --git a/dom/security/test/hsts/browser.ini b/dom/security/test/hsts/browser.ini
new file mode 100644
index 000000000..ae75031df
--- /dev/null
+++ b/dom/security/test/hsts/browser.ini
@@ -0,0 +1,19 @@
+[DEFAULT]
+skip-if = debug # bug 1311599, bug 1311239, etc
+support-files =
+  head.js
+  file_priming-top.html
+  file_testserver.sjs
+  file_1x1.png
+  file_priming.js
+  file_stylesheet.css
+
+[browser_hsts-priming_allow_active.js]
+[browser_hsts-priming_block_active.js]
+[browser_hsts-priming_hsts_after_mixed.js]
+[browser_hsts-priming_allow_display.js]
+[browser_hsts-priming_block_display.js]
+[browser_hsts-priming_block_active_css.js]
+[browser_hsts-priming_block_active_with_redir_same.js]
+[browser_hsts-priming_no-duplicates.js]
+[browser_hsts-priming_cache-timeout.js]
diff --git a/dom/security/test/hsts/browser_hsts-priming_allow_active.js b/dom/security/test/hsts/browser_hsts-priming_allow_active.js
new file mode 100644
index 000000000..a932b31b3
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_allow_active.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when active
+ *   content is allowed.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "allow_active";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_allow_display.js b/dom/security/test/hsts/browser_hsts-priming_allow_display.js
new file mode 100644
index 000000000..06546ca65
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_allow_display.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when display
+ *   content is allowed.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "allow_display";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_block_active.js b/dom/security/test/hsts/browser_hsts-priming_block_active.js
new file mode 100644
index 000000000..a5478b185
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_block_active.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when active
+ *   content is blocked.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_active";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_block_active_css.js b/dom/security/test/hsts/browser_hsts-priming_block_active_css.js
new file mode 100644
index 000000000..340d11483
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_block_active_css.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when active
+ *   content is blocked for css.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_active_css";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_block_active_with_redir_same.js b/dom/security/test/hsts/browser_hsts-priming_block_active_with_redir_same.js
new file mode 100644
index 000000000..130a3d5ec
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_block_active_with_redir_same.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when active
+ *   content is blocked and redirect to the same host should still upgrade.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_active_with_redir_same";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_block_display.js b/dom/security/test/hsts/browser_hsts-priming_block_display.js
new file mode 100644
index 000000000..4eca62718
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_block_display.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when display
+ *   content is blocked.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_display";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_cache-timeout.js b/dom/security/test/hsts/browser_hsts-priming_cache-timeout.js
new file mode 100644
index 000000000..5416a71d2
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_cache-timeout.js
@@ -0,0 +1,36 @@
+/*
+ * Description of the test:
+ * Test that the network.hsts_priming.cache_timeout preferene causes the cache
+ * to timeout
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Observer.add_observers(Services);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_display";
+
+  SetupPrefTestEnvironment(which, [["security.mixed_content.hsts_priming_cache_timeout", 1]]);
+
+  yield execute_test("no-ssl", test_settings[which].mimetype);
+
+  let pre_promise = performance.now();
+
+  while ((performance.now() - pre_promise) < 2000) {
+    yield new Promise(function (resolve) {
+      setTimeout(resolve, 2000);
+    });
+  }
+
+  // clear the fact that we saw a priming request
+  test_settings[which].priming = {};
+
+  yield execute_test("no-ssl", test_settings[which].mimetype);
+  is(test_settings[which].priming["no-ssl"], true,
+    "Correctly send a priming request after expiration.");
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_hsts_after_mixed.js b/dom/security/test/hsts/browser_hsts-priming_hsts_after_mixed.js
new file mode 100644
index 000000000..89ea6fbeb
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_hsts_after_mixed.js
@@ -0,0 +1,24 @@
+/*
+ * Description of the test:
+ *   Check that HSTS priming occurs correctly with mixed content when the
+ *   mixed-content blocks before HSTS.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Services.obs.addObserver(Observer, "console-api-log-event", false);
+  Services.obs.addObserver(Observer, "http-on-examine-response", false);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "hsts_after_mixed";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/browser_hsts-priming_no-duplicates.js b/dom/security/test/hsts/browser_hsts-priming_no-duplicates.js
new file mode 100644
index 000000000..3846fe4f0
--- /dev/null
+++ b/dom/security/test/hsts/browser_hsts-priming_no-duplicates.js
@@ -0,0 +1,30 @@
+/*
+ * Description of the test:
+ *   Only one request should be sent per host, even if we run the test more
+ *   than once.
+ */
+'use strict';
+
+//jscs:disable
+add_task(function*() {
+  //jscs:enable
+  Observer.add_observers(Services);
+  registerCleanupFunction(do_cleanup);
+
+  let which = "block_display";
+
+  SetupPrefTestEnvironment(which);
+
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  test_settings[which].priming = {};
+
+  // run the tests twice to validate the cache is being used
+  for (let server of Object.keys(test_servers)) {
+    yield execute_test(server, test_settings[which].mimetype);
+  }
+
+  SpecialPowers.popPrefEnv();
+});
diff --git a/dom/security/test/hsts/file_1x1.png b/dom/security/test/hsts/file_1x1.png
new file mode 100644
index 000000000..1ba31ba1a
--- /dev/null
+++ b/dom/security/test/hsts/file_1x1.png
diff --git a/dom/security/test/hsts/file_priming-top.html b/dom/security/test/hsts/file_priming-top.html
new file mode 100644
index 000000000..b1d1bfa40
--- /dev/null
+++ b/dom/security/test/hsts/file_priming-top.html
@@ -0,0 +1,84 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Bug 1246540</title>
+  <meta http-equiv='content-type' content="text/html;charset=utf-8" />
+</head>
+<body>
+  <p id="display"></p>
+  <div id="content" style="visibility: hidden">
+  </div>
+
+<script type="text/javascript">
+/*
+ * Description of the test:
+ * Attempt to load an insecure resource. If the resource responds to HSTS
+ * priming with an STS header, the load should continue securely.
+ * If it does not, the load should continue be blocked or continue insecurely.
+ */
+
+function parse_query_string() {
+  var q = {};
+  document.location.search.substr(1).
+    split('&').forEach(function (item, idx, ar) {
+      let [k, v] = item.split('=');
+      q[k] = unescape(v);
+    });
+  return q;
+}
+
+var args = parse_query_string();
+
+var subresources = {
+  css: { mimetype: 'text/css', file: 'file_stylesheet.css' },
+  img: { mimetype: 'image/png', file: 'file_1x1.png' },
+  script: { mimetype: 'text/javascript', file: 'file_priming.js' },
+};
+
+function handler(ev) {
+  console.log("HSTS_PRIMING: Blocked "+args.id);
+}
+
+function loadCss(src) {
+  let head = document.getElementsByTagName("head")[0];
+  let link = document.createElement("link");
+  link.setAttribute("rel", "stylesheet");
+  link.setAttribute("type", subresources[args.type].mimetype);
+  link.setAttribute("href", src);
+  head.appendChild(link);
+}
+
+function loadResource(src) {
+  let content = document.getElementById("content");
+  let testElem = document.createElement(args.type);
+  testElem.setAttribute("id", args.id);
+  testElem.setAttribute("charset", "UTF-8");
+  testElem.onerror = handler;
+  content.appendChild(testElem);
+  testElem.src = src;
+}
+
+function loadTest() {
+  let subresource = subresources[args.type];
+
+  let src = "http://"
+    + args.host
+    + "/browser/dom/security/test/hsts/file_testserver.sjs"
+    + "?file=" +escape("browser/dom/security/test/hsts/" + subresource.file)
+    + "&primer=" + escape(args.id)
+    + "&mimetype=" + escape(subresource.mimetype)
+    ;
+  if (args.type == 'css') {
+    loadCss(src);
+    return;
+  }
+
+  loadResource(src);
+}
+
+// start running the tests
+loadTest();
+
+</script>
+</body>
+</html>
diff --git a/dom/security/test/hsts/file_priming.js b/dom/security/test/hsts/file_priming.js
new file mode 100644
index 000000000..023022da6
--- /dev/null
+++ b/dom/security/test/hsts/file_priming.js
@@ -0,0 +1,4 @@
+function completed() {
+  return;
+}
+completed();
diff --git a/dom/security/test/hsts/file_stylesheet.css b/dom/security/test/hsts/file_stylesheet.css
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/dom/security/test/hsts/file_stylesheet.css
diff --git a/dom/security/test/hsts/file_testserver.sjs b/dom/security/test/hsts/file_testserver.sjs
new file mode 100644
index 000000000..d5cd6b17a
--- /dev/null
+++ b/dom/security/test/hsts/file_testserver.sjs
@@ -0,0 +1,66 @@
+// SJS file for HSTS mochitests
+
+Components.utils.import("resource://gre/modules/NetUtil.jsm");
+Components.utils.importGlobalProperties(["URLSearchParams"]);
+
+function loadFromFile(path) {
+  // Load the HTML to return in the response from file.
+  // Since it's relative to the cwd of the test runner, we start there and
+  // append to get to the actual path of the file.
+  var testFile =
+    Components.classes["@mozilla.org/file/directory_service;1"].
+    getService(Components.interfaces.nsIProperties).
+    get("CurWorkD", Components.interfaces.nsILocalFile);
+  var dirs = path.split("/");
+  for (var i = 0; i < dirs.length; i++) {
+    testFile.append(dirs[i]);
+  }
+  var testFileStream =
+    Components.classes["@mozilla.org/network/file-input-stream;1"].
+    createInstance(Components.interfaces.nsIFileInputStream);
+  testFileStream.init(testFile, -1, 0, 0);
+  var test = NetUtil.readInputStreamToString(testFileStream, testFileStream.available());
+  return test;
+}
+
+function handleRequest(request, response)
+{
+  const query = new URLSearchParams(request.queryString);
+
+  redir = query.get('redir');
+  if (redir == 'same') {
+    query.delete("redir");
+    response.setStatus(302);
+    let newURI = request.uri;
+    newURI.queryString = query.serialize();
+    response.setHeader("Location", newURI.spec)
+  }
+
+  // avoid confusing cache behaviors
+  response.setHeader("Cache-Control", "no-cache", false);
+
+  // if we have a priming header, check for required behavior
+  // and set header appropriately
+  if (request.hasHeader('Upgrade-Insecure-Requests')) {
+    var expected = query.get('primer');
+    if (expected == 'prime-hsts') {
+      // set it for 5 minutes
+      response.setHeader("Strict-Transport-Security", "max-age="+(60*5), false);
+    } else if (expected == 'reject-upgrade') {
+      response.setHeader("Strict-Transport-Security", "max-age=0", false);
+    }
+    response.write('');
+    return;
+  }
+
+  var file = query.get('file');
+  if (file) {
+    var mimetype = unescape(query.get('mimetype'));
+    response.setHeader("Content-Type", mimetype, false);
+    response.write(loadFromFile(unescape(file)));
+    return;
+  }
+
+  response.setHeader("Content-Type", "application/json", false);
+  response.write('{}');
+}
diff --git a/dom/security/test/hsts/head.js b/dom/security/test/hsts/head.js
new file mode 100644
index 000000000..362b36444
--- /dev/null
+++ b/dom/security/test/hsts/head.js
@@ -0,0 +1,308 @@
+/*
+ * Description of the tests:
+ *   Check that HSTS priming occurs correctly with mixed content
+ *
+ *   This test uses three hostnames, each of which treats an HSTS priming
+ *   request differently.
+ *   * no-ssl never returns an ssl response
+ *   * reject-upgrade returns an ssl response, but with no STS header
+ *   * prime-hsts returns an ssl response with the appropriate STS header
+ *
+ *   For each server, test that it response appropriately when the we allow
+ *   or block active or display content, as well as when we send an hsts priming
+ *   request, but do not change the order of mixed-content and HSTS.
+ *
+ *   Test use http-on-examine-response, so must be run in browser context.
+ */
+'use strict';
+
+var TOP_URI = "https://example.com/browser/dom/security/test/hsts/file_priming-top.html";
+
+var test_servers = {
+  // a test server that does not support TLS
+  'no-ssl': {
+    host: 'example.co.jp',
+    response: false,
+    id: 'no-ssl',
+  },
+  // a test server which does not support STS upgrade
+  'reject-upgrade': {
+    host: 'example.org',
+    response: true,
+    id: 'reject-upgrade',
+  },
+  // a test server when sends an STS header when priming
+  'prime-hsts': {
+    host: 'test1.example.com',
+    response: true,
+    id: 'prime-hsts'
+  },
+};
+
+var test_settings = {
+  // mixed active content is allowed, priming will upgrade
+  allow_active: {
+    block_active: false,
+    block_display: false,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'script',
+    result: {
+      'no-ssl': 'insecure',
+      'reject-upgrade': 'insecure',
+      'prime-hsts': 'secure',
+    },
+  },
+  // mixed active content is blocked, priming will upgrade
+  block_active: {
+    block_active: true,
+    block_display: false,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'script',
+    result: {
+      'no-ssl': 'blocked',
+      'reject-upgrade': 'blocked',
+      'prime-hsts': 'secure',
+    },
+  },
+  // keep the original order of mixed-content and HSTS, but send
+  // priming requests
+  hsts_after_mixed: {
+    block_active: true,
+    block_display: false,
+    use_hsts: false,
+    send_hsts_priming: true,
+    type: 'script',
+    result: {
+      'no-ssl': 'blocked',
+      'reject-upgrade': 'blocked',
+      'prime-hsts': 'blocked',
+    },
+  },
+  // mixed display content is allowed, priming will upgrade
+  allow_display: {
+    block_active: true,
+    block_display: false,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'img',
+    result: {
+      'no-ssl': 'insecure',
+      'reject-upgrade': 'insecure',
+      'prime-hsts': 'secure',
+    },
+  },
+  // mixed display content is blocked, priming will upgrade
+  block_display: {
+    block_active: true,
+    block_display: true,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'img',
+    result: {
+      'no-ssl': 'blocked',
+      'reject-upgrade': 'blocked',
+      'prime-hsts': 'secure',
+    },
+  },
+  // mixed active content is blocked, priming will upgrade (css)
+  block_active_css: {
+    block_active: true,
+    block_display: false,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'css',
+    result: {
+      'no-ssl': 'blocked',
+      'reject-upgrade': 'blocked',
+      'prime-hsts': 'secure',
+    },
+  },
+  // mixed active content is blocked, priming will upgrade
+  // redirect to the same host
+  block_active_with_redir_same: {
+    block_active: true,
+    block_display: false,
+    use_hsts: true,
+    send_hsts_priming: true,
+    type: 'script',
+    redir: 'same',
+    result: {
+      'no-ssl': 'blocked',
+      'reject-upgrade': 'blocked',
+      'prime-hsts': 'secure',
+    },
+  },
+}
+// track which test we are on
+var which_test = "";
+
+const Observer = {
+  observe: function (subject, topic, data) {
+    switch (topic) {
+      case 'console-api-log-event':
+        return Observer.console_api_log_event(subject, topic, data);
+      case 'http-on-examine-response':
+        return Observer.http_on_examine_response(subject, topic, data);
+      case 'http-on-modify-request':
+        return Observer.http_on_modify_request(subject, topic, data);
+    }
+    throw "Can't handle topic "+topic;
+  },
+  add_observers: function (services) {
+    services.obs.addObserver(Observer, "console-api-log-event", false);
+    services.obs.addObserver(Observer, "http-on-examine-response", false);
+    services.obs.addObserver(Observer, "http-on-modify-request", false);
+  },
+  // When a load is blocked which results in an error event within a page, the
+  // test logs to the console.
+  console_api_log_event: function (subject, topic, data) {
+    var message = subject.wrappedJSObject.arguments[0];
+    // when we are blocked, this will match the message we sent to the console,
+    // ignore everything else.
+    var re = RegExp(/^HSTS_PRIMING: Blocked ([-\w]+).*$/);
+    if (!re.test(message)) {
+      return;
+    }
+
+    let id = message.replace(re, '$1');
+    let curTest =test_servers[id];
+
+    if (!curTest) {
+      ok(false, "HSTS priming got a console message blocked, "+
+          "but doesn't match expectations "+id+" (msg="+message);
+      return;
+    }
+
+    is("blocked", test_settings[which_test].result[curTest.id], "HSTS priming "+
+        which_test+":"+curTest.id+" expected "+
+        test_settings[which_test].result[curTest.id]+", got blocked");
+    test_settings[which_test].finished[curTest.id] = "blocked";
+  },
+  get_current_test: function(uri) {
+    for (let item in test_servers) {
+      let re = RegExp('https?://'+test_servers[item].host);
+      if (re.test(uri)) {
+        return test_servers[item];
+      }
+    }
+    return null;
+  },
+  http_on_modify_request: function (subject, topic, data) {
+    let channel = subject.QueryInterface(Ci.nsIHttpChannel);
+    if (channel.requestMethod != 'HEAD') {
+      return;
+    }
+
+    let curTest = this.get_current_test(channel.URI.asciiSpec);
+
+    if (!curTest) {
+      return;
+    }
+
+    ok(!(curTest.id in test_settings[which_test].priming), "Already saw a priming request for " + curTest.id);
+    test_settings[which_test].priming[curTest.id] = true;
+  },
+  // When we see a response come back, peek at the response and test it is secure
+  // or insecure as needed. Addtionally, watch the response for priming requests.
+  http_on_examine_response: function (subject, topic, data) {
+    let channel = subject.QueryInterface(Ci.nsIHttpChannel);
+    let curTest = this.get_current_test(channel.URI.asciiSpec);
+
+    if (!curTest) {
+      return;
+    }
+
+    let result = (channel.URI.asciiSpec.startsWith('https:')) ? "secure" : "insecure";
+
+    // This is a priming request, go ahead and validate we were supposed to see
+    // a response from the server
+    if (channel.requestMethod == 'HEAD') {
+      is(true, curTest.response, "HSTS priming response found " + curTest.id);
+      return;
+    }
+
+    // This is the response to our query, make sure it matches
+    is(result, test_settings[which_test].result[curTest.id],
+        "HSTS priming result " + which_test + ":" + curTest.id);
+    test_settings[which_test].finished[curTest.id] = result;
+  },
+};
+
+// opens `uri' in a new tab and focuses it.
+// returns the newly opened tab
+function openTab(uri) {
+  let tab = gBrowser.addTab(uri);
+
+  // select tab and make sure its browser is focused
+  gBrowser.selectedTab = tab;
+  tab.ownerDocument.defaultView.focus();
+
+  return tab;
+}
+
+function clear_sts_data() {
+  for (let test in test_servers) {
+    SpecialPowers.cleanUpSTSData('http://'+test_servers[test].host);
+  }
+}
+
+function do_cleanup() {
+  clear_sts_data();
+
+  Services.obs.removeObserver(Observer, "console-api-log-event");
+  Services.obs.removeObserver(Observer, "http-on-examine-response");
+}
+
+function SetupPrefTestEnvironment(which, additional_prefs) {
+  which_test = which;
+  clear_sts_data();
+
+  var settings = test_settings[which];
+  // priming counts how many priming requests we saw
+  settings.priming = {};
+  // priming counts how many tests were finished
+  settings.finished= {};
+
+  var prefs = [["security.mixed_content.block_active_content",
+                settings.block_active],
+               ["security.mixed_content.block_display_content",
+                settings.block_display],
+               ["security.mixed_content.use_hsts",
+                settings.use_hsts],
+               ["security.mixed_content.send_hsts_priming",
+                settings.send_hsts_priming]];
+
+  if (additional_prefs) {
+    for (let idx in additional_prefs) {
+      prefs.push(additional_prefs[idx]);
+    }
+  }
+
+  console.log("prefs=%s", prefs);
+
+  SpecialPowers.pushPrefEnv({'set': prefs});
+}
+
+// make the top-level test uri
+function build_test_uri(base_uri, host, test_id, type) {
+  return base_uri +
+          "?host=" + escape(host) +
+          "&id=" + escape(test_id) +
+          "&type=" + escape(type);
+}
+
+// open a new tab, load the test, and wait for it to finish
+function execute_test(test, mimetype) {
+  var src = build_test_uri(TOP_URI, test_servers[test].host,
+      test, test_settings[which_test].type);
+
+  let tab = openTab(src);
+  test_servers[test]['tab'] = tab;
+
+  let browser = gBrowser.getBrowserForTab(tab);
+  yield BrowserTestUtils.browserLoaded(browser);
+
+  yield BrowserTestUtils.removeTab(tab);
+}