[tor-commits] [tor-browser/tor-browser-78.14.0esr-11.0-1] Bug 27476: Implement about:torconnect captive portal within Tor Browser

sysrqb at torproject.org sysrqb at torproject.org
Tue Sep 7 21:56:55 UTC 2021


commit 8b2cf8458bc402f49506e53853c0baa8e2e2e5e7
Author: Richard Pospesel <richard at torproject.org>
Date:   Wed Apr 28 23:09:34 2021 -0500

    Bug 27476: Implement about:torconnect captive portal within Tor Browser
    
    - implements new about:torconnect page as tor-launcher replacement
    - adds tor connection status to url bar and tweaks UX when not online
    - adds new torconnect component to browser
    - tor process management functionality remains implemented in tor-launcher through the TorProtocolService module
    - the onion pattern from about:tor migrated to an .inc.xhtml file now used by both about:tor and about:torconnect
    - various design tweaks and resusability fixes to onion pattern
    - adds warning/error box to about:preferences#tor when not connected to tor
    - explicitly allows about:torconnect URIs to ignore Resist Fingerprinting (RFP)
    - various tweaks to info-pages.inc.css for about:torconnect (also affects other firefox info pages)
---
 browser/actors/NetErrorParent.jsm                  |   8 +
 browser/base/content/aboutNetError.js              |  12 +-
 browser/base/content/browser-siteIdentity.js       |   2 +-
 browser/base/content/browser.js                    |  66 ++-
 browser/base/content/browser.xhtml                 |   3 +
 browser/base/content/utilityOverlay.js             |   8 +
 .../alpha/content/identity-icons-brand.svg         |  26 +-
 browser/branding/alpha/content/jar.mn              |   1 +
 browser/branding/alpha/content/tor-styles.css      |  13 +
 .../nightly/content/identity-icons-brand.svg       |  30 +-
 browser/branding/nightly/content/jar.mn            |   1 +
 browser/branding/nightly/content/tor-styles.css    |  13 +
 .../official/content/identity-icons-brand.svg      |  32 +-
 browser/branding/official/content/jar.mn           |   1 +
 browser/branding/official/content/tor-styles.css   |  14 +
 browser/branding/tor-styles.inc.css                |  87 ++++
 browser/components/BrowserGlue.jsm                 |  37 +-
 browser/components/about/AboutRedirector.cpp       |   4 +
 browser/components/about/components.conf           |   1 +
 browser/components/moz.build                       |   1 +
 .../onionservices/HttpsEverywhereControl.jsm       |  17 +-
 browser/components/sessionstore/SessionStore.jsm   |   4 +
 browser/components/torconnect/TorConnectChild.jsm  |   9 +
 browser/components/torconnect/TorConnectParent.jsm | 150 +++++++
 .../torconnect/content/aboutTorConnect.css         | 155 +++++++
 .../torconnect/content/aboutTorConnect.js          | 304 +++++++++++++
 .../torconnect/content/aboutTorConnect.xhtml       |  45 ++
 .../components/torconnect/content/onion-slash.svg  |   7 +
 browser/components/torconnect/content/onion.svg    |   3 +
 .../torconnect/content/torBootstrapUrlbar.js       |  93 ++++
 .../torconnect/content/torconnect-urlbar.css       |  57 +++
 .../torconnect/content/torconnect-urlbar.inc.xhtml |  10 +
 browser/components/torconnect/jar.mn               |   7 +
 browser/components/torconnect/moz.build            |   6 +
 .../components/torpreferences/content/torPane.js   |  90 ++++
 .../torpreferences/content/torPane.xhtml           |  34 ++
 .../torpreferences/content/torPreferences.css      | 123 +++++
 browser/components/urlbar/UrlbarInput.jsm          |  31 ++
 browser/modules/TorConnect.jsm                     | 499 +++++++++++++++++++++
 browser/modules/TorProcessService.jsm              |  12 +
 browser/modules/TorProtocolService.jsm             | 179 +++++++-
 browser/modules/TorStrings.jsm                     |  80 ++++
 browser/modules/moz.build                          |   2 +
 .../shared/identity-block/identity-block.inc.css   |  16 +-
 browser/themes/shared/jar.inc.mn                   |   1 +
 browser/themes/shared/onionPattern.css             | 124 +++++
 browser/themes/shared/onionPattern.inc.xhtml       | 210 +++++++++
 browser/themes/shared/urlbar-searchbar.inc.css     |   2 +
 dom/base/Document.cpp                              |  51 ++-
 dom/base/nsGlobalWindowOuter.cpp                   |   2 +
 .../processsingleton/MainProcessSingleton.jsm      |   5 +
 toolkit/modules/AsyncPrefs.jsm                     |   2 +
 toolkit/modules/RemotePageAccessManager.jsm        |  16 +
 toolkit/mozapps/update/UpdateService.jsm           |  68 ++-
 .../themes/shared/in-content/info-pages.inc.css    |  15 +-
 .../lib/environments/browser-window.js             |   4 +
 56 files changed, 2650 insertions(+), 143 deletions(-)

diff --git a/browser/actors/NetErrorParent.jsm b/browser/actors/NetErrorParent.jsm
index 035195391554..6dce9af5aad0 100644
--- a/browser/actors/NetErrorParent.jsm
+++ b/browser/actors/NetErrorParent.jsm
@@ -17,6 +17,10 @@ const { SessionStore } = ChromeUtils.import(
 );
 const { HomePage } = ChromeUtils.import("resource:///modules/HomePage.jsm");
 
+const { TorConnect } = ChromeUtils.import(
+  "resource:///modules/TorConnect.jsm"
+);
+
 const PREF_SSL_IMPACT_ROOTS = [
   "security.tls.version.",
   "security.ssl3.",
@@ -318,6 +322,10 @@ class NetErrorParent extends JSWindowActorParent {
             break;
           }
         }
+        break;
+      case "ShouldShowTorConnect":
+        return TorConnect.shouldShowTorConnect;
     }
+    return undefined;
   }
 }
diff --git a/browser/base/content/aboutNetError.js b/browser/base/content/aboutNetError.js
index 60db17f46eb9..32bd5576de3e 100644
--- a/browser/base/content/aboutNetError.js
+++ b/browser/base/content/aboutNetError.js
@@ -194,8 +194,18 @@ async function setErrorPageStrings(err) {
   document.l10n.setAttributes(titleElement, title);
 }
 
-function initPage() {
+async function initPage() {
   var err = getErrorCode();
+
+  // proxyConnectFailure because no-tor running daemon would return this error
+  if (
+    (err === "proxyConnectFailure") &&
+    (await RPMSendQuery("ShouldShowTorConnect"))
+  ) {
+    // pass orginal destination as redirect param
+    const encodedRedirect = encodeURIComponent(document.location.href);
+    document.location.replace(`about:torconnect?redirect=${encodedRedirect}`);
+  }
   // List of error pages with an illustration.
   let illustratedErrors = [
     "malformedURI",
diff --git a/browser/base/content/browser-siteIdentity.js b/browser/base/content/browser-siteIdentity.js
index 539d6d4056a3..2a3431172886 100644
--- a/browser/base/content/browser-siteIdentity.js
+++ b/browser/base/content/browser-siteIdentity.js
@@ -57,7 +57,7 @@ var gIdentityHandler = {
    * RegExp used to decide if an about url should be shown as being part of
    * the browser UI.
    */
-  _secureInternalUIWhitelist: (AppConstants.TOR_BROWSER_UPDATE ? /^(?:accounts|addons|cache|certificate|config|crashes|downloads|license|logins|preferences|protections|rights|sessionrestore|support|welcomeback|tor|tbupdate)(?:[?#]|$)/i : /^(?:accounts|addons|cache|certificate|config|crashes|downloads|license|logins|preferences|protections|rights|sessionrestore|support|welcomeback|tor)(?:[?#]|$)/i),
+  _secureInternalUIWhitelist: (AppConstants.TOR_BROWSER_UPDATE ? /^(?:accounts|addons|cache|certificate|config|crashes|downloads|license|logins|preferences|protections|rights|sessionrestore|support|welcomeback|tor|torconnect|tbupdate)(?:[?#]|$)/i : /^(?:accounts|addons|cache|certificate|config|crashes|downloads|license|logins|preferences|protections|rights|sessionrestore|support|welcomeback|tor|torconnect)(?:[?#]|$)/i),
 
   /**
    * Whether the established HTTPS connection is considered "broken".
diff --git a/browser/base/content/browser.js b/browser/base/content/browser.js
index 04f8752b93f4..37d67f7680af 100644
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -77,6 +77,7 @@ XPCOMUtils.defineLazyModuleGetters(this, {
   TabModalPrompt: "chrome://global/content/tabprompts.jsm",
   TabCrashHandler: "resource:///modules/ContentCrashHandlers.jsm",
   TelemetryEnvironment: "resource://gre/modules/TelemetryEnvironment.jsm",
+  TorConnect: "resource:///modules/TorConnect.jsm",
   Translation: "resource:///modules/translation/TranslationParent.jsm",
   OnionAliasStore: "resource:///modules/OnionAliasStore.jsm",
   UITour: "resource:///modules/UITour.jsm",
@@ -633,6 +634,7 @@ var gPageIcons = {
 
 var gInitialPages = [
   "about:tor",
+  "about:torconnect",
   "about:blank",
   "about:newtab",
   "about:home",
@@ -1959,6 +1961,8 @@ var gBrowserInit = {
     }
 
     this._loadHandled = true;
+
+    TorBootstrapUrlbar.init();
   },
 
   _cancelDelayedStartup() {
@@ -2490,32 +2494,48 @@ var gBrowserInit = {
       let uri = window.arguments[0];
       let defaultArgs = BrowserHandler.defaultArgs;
 
-      // If the given URI is different from the homepage, we want to load it.
-      if (uri != defaultArgs) {
-        AboutNewTab.noteNonDefaultStartup();
+      // figure out which URI to actually load (or a Promise to get the uri)
+      uri = ((uri) => {
+        // If the given URI is different from the homepage, we want to load it.
+        if (uri != defaultArgs) {
+          AboutNewTab.noteNonDefaultStartup();
+
+          if (uri instanceof Ci.nsIArray) {
+            // Transform the nsIArray of nsISupportsString's into a JS Array of
+            // JS strings.
+            return Array.from(
+              uri.enumerate(Ci.nsISupportsString),
+              supportStr => supportStr.data
+            );
+          } else if (uri instanceof Ci.nsISupportsString) {
+            return uri.data;
+          }
+          return uri;
+        }
 
-        if (uri instanceof Ci.nsIArray) {
-          // Transform the nsIArray of nsISupportsString's into a JS Array of
-          // JS strings.
-          return Array.from(
-            uri.enumerate(Ci.nsISupportsString),
-            supportStr => supportStr.data
-          );
-        } else if (uri instanceof Ci.nsISupportsString) {
-          return uri.data;
+        // The URI appears to be the the homepage. We want to load it only if
+        // session restore isn't about to override the homepage.
+        let willOverride = SessionStartup.willOverrideHomepage;
+        if (typeof willOverride == "boolean") {
+          return willOverride ? null : uri;
         }
-        return uri;
-      }
+        return willOverride.then(willOverrideHomepage =>
+          willOverrideHomepage ? null : uri
+        );
+      })(uri);
+
+      // if using TorConnect, convert these uris to redirects
+      if (TorConnect.shouldShowTorConnect) {
+        return Promise.resolve(uri).then((uri) => {
+          if (uri == null) {
+            uri  = [];
+          }
 
-      // The URI appears to be the the homepage. We want to load it only if
-      // session restore isn't about to override the homepage.
-      let willOverride = SessionStartup.willOverrideHomepage;
-      if (typeof willOverride == "boolean") {
-        return willOverride ? null : uri;
+          uri = TorConnect.getURIsToLoad(uri);
+          return uri;
+        });
       }
-      return willOverride.then(willOverrideHomepage =>
-        willOverrideHomepage ? null : uri
-      );
+      return uri;
     })());
   },
 
@@ -2582,6 +2602,8 @@ var gBrowserInit = {
 
     OnionAuthPrompt.uninit();
 
+    TorBootstrapUrlbar.uninit();
+
     gAccessibilityServiceIndicator.uninit();
 
     AccessibilityRefreshBlocker.uninit();
diff --git a/browser/base/content/browser.xhtml b/browser/base/content/browser.xhtml
index c2caecc1a416..134ab8e087e1 100644
--- a/browser/base/content/browser.xhtml
+++ b/browser/base/content/browser.xhtml
@@ -10,6 +10,7 @@
      override rules using selectors with the same specificity. This applies to
      both "content" and "skin" packages, which bug 1385444 will unify later. -->
 <?xml-stylesheet href="chrome://global/skin/global.css" type="text/css"?>
+<?xml-stylesheet href="chrome://branding/content/tor-styles.css" type="text/css"?>
 
 <!-- While these stylesheets are defined in Toolkit, they are only used in the
      main browser window, so we can load them here. Bug 1474241 is on file to
@@ -112,6 +113,7 @@
   Services.scriptloader.loadSubScript("chrome://browser/content/search/searchbar.js", this);
   Services.scriptloader.loadSubScript("chrome://torbutton/content/tor-circuit-display.js", this);
   Services.scriptloader.loadSubScript("chrome://torbutton/content/torbutton.js", this);
+  Services.scriptloader.loadSubScript("chrome://browser/content/torconnect/torBootstrapUrlbar.js", this);
 
   window.onload = gBrowserInit.onLoad.bind(gBrowserInit);
   window.onunload = gBrowserInit.onUnload.bind(gBrowserInit);
@@ -1055,6 +1057,7 @@
                      data-l10n-id="urlbar-go-button"/>
               <hbox id="page-action-buttons" context="pageActionContextMenu">
                 <toolbartabstop/>
+#include ../../components/torconnect/content/torconnect-urlbar.inc.xhtml
                 <hbox id="contextual-feature-recommendation" role="button" hidden="true">
                   <hbox id="cfr-label-container">
                     <label id="cfr-label"/>
diff --git a/browser/base/content/utilityOverlay.js b/browser/base/content/utilityOverlay.js
index eb13d5a3435c..0b3bdde4b5d4 100644
--- a/browser/base/content/utilityOverlay.js
+++ b/browser/base/content/utilityOverlay.js
@@ -20,6 +20,7 @@ XPCOMUtils.defineLazyModuleGetters(this, {
   ExtensionSettingsStore: "resource://gre/modules/ExtensionSettingsStore.jsm",
   PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.jsm",
   ShellService: "resource:///modules/ShellService.jsm",
+  TorConnect: "resource:///modules/TorConnect.jsm",
 });
 
 XPCOMUtils.defineLazyGetter(this, "ReferrerInfo", () =>
@@ -335,6 +336,13 @@ function openUILinkIn(
   aPostData,
   aReferrerInfo
 ) {
+
+  // make sure users are not faced with the scary red 'tor isn't working' screen
+  // if they navigate to about:tor before bootstrapped
+  if (url === "about:tor" && TorConnect.shouldShowTorConnect) {
+    url = `about:torconnect?redirect=${encodeURIComponent("about:tor")}`;
+  }
+
   var params;
 
   if (arguments.length == 3 && typeof arguments[2] == "object") {
diff --git a/browser/branding/alpha/content/identity-icons-brand.svg b/browser/branding/alpha/content/identity-icons-brand.svg
index 9bfa43842e2d..30cd52ba5c51 100644
--- a/browser/branding/alpha/content/identity-icons-brand.svg
+++ b/browser/branding/alpha/content/identity-icons-brand.svg
@@ -1,25 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg width="512px" height="512px" viewBox="-17 -17 546 546" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-    <defs>
-        <linearGradient x1="50%" y1="3.27248873%" x2="50%" y2="97.1599968%" id="linearGradient-1">
-            <stop stop-color="#00FEFF" offset="0%"></stop>
-            <stop stop-color="#0BE67D" offset="100%"></stop>
-        </linearGradient>
-        <path d="M25,25 C152.50841,25 255.874399,127.979815 255.874399,255.011855 C255.874399,382.043895 152.50841,485.02371 25,485.02371 L25,25 Z" id="path-2"></path>
-        <filter x="-20.8%" y="-8.7%" width="134.7%" height="117.4%" filterUnits="objectBoundingBox" id="filter-3">
-            <feOffset dx="-8" dy="0" in="SourceAlpha" result="shadowOffsetOuter1"></feOffset>
-            <feGaussianBlur stdDeviation="12" in="shadowOffsetOuter1" result="shadowBlurOuter1"></feGaussianBlur>
-            <feColorMatrix values="0 0 0 0 0.0872579578   0 0 0 0 0.00490370801   0 0 0 0 0.234933036  0 0 0 0.5 0" type="matrix" in="shadowBlurOuter1"></feColorMatrix>
-        </filter>
-    </defs>
-    <g id="Alpha" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g>
-            <circle id="background" fill-opacity="0.9" fill="#030004" fill-rule="nonzero" cx="256" cy="256" r="246"></circle>
-            <path d="M256.525143,465.439707 L256.525143,434.406609 C354.826191,434.122748 434.420802,354.364917 434.420802,255.992903 C434.420802,157.627987 354.826191,77.8701558 256.525143,77.5862948 L256.525143,46.5531962 C371.964296,46.8441537 465.446804,140.489882 465.446804,255.992903 C465.446804,371.503022 371.964296,465.155846 256.525143,465.439707 Z M256.525143,356.820314 C311.970283,356.529356 356.8487,311.516106 356.8487,255.992903 C356.8487,200.476798 311.970283,155.463547 256.525143,155.17259 L256.525143,124.146588 C329.115485,124.430449 387.881799,183.338693 387.881799,255.992903 C387.881799,328.654211 329.115485,387.562455 256.525143,387.846316 L256.525143,356.820314 Z M256.525143,201.718689 C286.266674,202.00255 310.3026,226.180407 310.3026,255.992903 C310.3026,285.812497 286.266674,309.990353 256.525143,310.274214 L256.525143,201.718689 Z M0,255.992903 C0,397.384044 114.60886,512 256,512 C397.384044,512 512,397.384044 512,255.992903 C512,114.60886 397.384044,2.842170
 94e-14 256,2.84217094e-14 C114.60886,2.84217094e-14 0,114.60886 0,255.992903 Z" id="center" fill="url(#linearGradient-1)"></path>
-            <g id="half" transform="translate(140.437200, 255.011855) scale(-1, 1) translate(-140.437200, -255.011855) ">
-                <use fill="black" fill-opacity="1" filter="url(#filter-3)" xlink:href="#path-2"></use>
-                <use fill="url(#linearGradient-1)" fill-rule="evenodd" xlink:href="#path-2"></use>
-            </g>
-        </g>
-    </g>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M12.0246161,21.8174863 L12.0246161,20.3628098 C16.6324777,20.3495038 20.3634751,16.6108555 20.3634751,11.9996673 C20.3634751,7.38881189 16.6324777,3.65016355 12.0246161,3.63685757 L12.0246161,2.18218107 C17.4358264,2.1958197 21.8178189,6.58546322 21.8178189,11.9996673 C21.8178189,17.4142042 17.4358264,21.8041803 12.0246161,21.8174863 L12.0246161,21.8174863 Z M12.0246161,16.7259522 C14.623607,16.7123136 16.7272828,14.6023175 16.7272828,11.9996673 C16.7272828,9.39734991 14.623607,7.28735377 12.0246161,7.27371516 L12.0246161,5.81937131 C15.4272884,5.8326773 18.1819593,8.59400123 18.1819593,11.9996673 C18.1819593,15.4056661 15.4272884,18.1669901 12.0246161,18.1802961 L12.0246161,16.7259522 Z M12.0246161,9.45556355 C13.4187503,9.46886953 14.5454344,10.6022066 14.5454344,11.9996673 C14.5454344,13.3974608 13.4187503,14.5307978 12.0246161,14.5441038 L12.0246161,9.45556355 Z M0,11.9996673 C0,18.6273771 5.37229031,24 12,24 C18
 .6273771,24 24,18.6273771 24,11.9996673 C24,5.37229031 18.6273771,0 12,0 C5.37229031,0 0,5.37229031 0,11.9996673 Z"/>
 </svg>
\ No newline at end of file
diff --git a/browser/branding/alpha/content/jar.mn b/browser/branding/alpha/content/jar.mn
index de166fe3636f..5dd066c27f9c 100644
--- a/browser/branding/alpha/content/jar.mn
+++ b/browser/branding/alpha/content/jar.mn
@@ -20,3 +20,4 @@ browser.jar:
   content/branding/identity-icons-brand.svg
   content/branding/aboutDialog.css
   content/branding/horizontal-lockup.svg
+* content/branding/tor-styles.css
diff --git a/browser/branding/alpha/content/tor-styles.css b/browser/branding/alpha/content/tor-styles.css
new file mode 100644
index 000000000000..14c1915ef871
--- /dev/null
+++ b/browser/branding/alpha/content/tor-styles.css
@@ -0,0 +1,13 @@
+%include ../../tor-styles.inc.css
+
+/* default theme*/
+:root,
+/* light theme*/
+:root:-moz-lwtheme-darktext {
+    --tor-branding-color: var(--teal-70);
+}
+
+/* dark theme */
+:root:-moz-lwtheme-brighttext {
+    --tor-branding-color: var(--teal-60);
+}
\ No newline at end of file
diff --git a/browser/branding/nightly/content/identity-icons-brand.svg b/browser/branding/nightly/content/identity-icons-brand.svg
index fc1d9c997aeb..30cd52ba5c51 100644
--- a/browser/branding/nightly/content/identity-icons-brand.svg
+++ b/browser/branding/nightly/content/identity-icons-brand.svg
@@ -1,29 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg width="512px" height="512px" viewBox="-17 -17 546 546" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-    <defs>
-        <linearGradient x1="25.1281738%" y1="5.44281006%" x2="54.3792725%" y2="100%" id="linearGradient-1">
-            <stop stop-color="#00E1E8" offset="0%"></stop>
-            <stop stop-color="#3500FF" offset="100%"></stop>
-        </linearGradient>
-        <linearGradient x1="25.1281738%" y1="5.44281006%" x2="54.3792725%" y2="100%" id="linearGradient-2">
-            <stop stop-color="#00E1E8" offset="0%"></stop>
-            <stop stop-color="#3500FF" offset="100%"></stop>
-        </linearGradient>
-        <path d="M25,25 C152.50841,25 255.874399,127.979815 255.874399,255.011855 C255.874399,382.043895 152.50841,485.02371 25,485.02371 L25,25 Z" id="path-3"></path>
-        <filter x="-20.8%" y="-8.7%" width="134.7%" height="117.4%" filterUnits="objectBoundingBox" id="filter-4">
-            <feOffset dx="-8" dy="0" in="SourceAlpha" result="shadowOffsetOuter1"></feOffset>
-            <feGaussianBlur stdDeviation="12" in="shadowOffsetOuter1" result="shadowBlurOuter1"></feGaussianBlur>
-            <feColorMatrix values="0 0 0 0 0.0872579578   0 0 0 0 0.00490370801   0 0 0 0 0.234933036  0 0 0 0.5 0" type="matrix" in="shadowBlurOuter1"></feColorMatrix>
-        </filter>
-    </defs>
-    <g id="Nightly" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g>
-            <circle id="background" fill-opacity="0.9" fill="#030004" fill-rule="nonzero" cx="256" cy="256" r="246"></circle>
-            <path d="M256.525143,465.439707 L256.525143,434.406609 C354.826191,434.122748 434.420802,354.364917 434.420802,255.992903 C434.420802,157.627987 354.826191,77.8701558 256.525143,77.5862948 L256.525143,46.5531962 C371.964296,46.8441537 465.446804,140.489882 465.446804,255.992903 C465.446804,371.503022 371.964296,465.155846 256.525143,465.439707 Z M256.525143,356.820314 C311.970283,356.529356 356.8487,311.516106 356.8487,255.992903 C356.8487,200.476798 311.970283,155.463547 256.525143,155.17259 L256.525143,124.146588 C329.115485,124.430449 387.881799,183.338693 387.881799,255.992903 C387.881799,328.654211 329.115485,387.562455 256.525143,387.846316 L256.525143,356.820314 Z M256.525143,201.718689 C286.266674,202.00255 310.3026,226.180407 310.3026,255.992903 C310.3026,285.812497 286.266674,309.990353 256.525143,310.274214 L256.525143,201.718689 Z M0,255.992903 C0,397.384044 114.60886,512 256,512 C397.384044,512 512,397.384044 512,255.992903 C512,114.60886 397.384044,2.842170
 94e-14 256,2.84217094e-14 C114.60886,2.84217094e-14 0,114.60886 0,255.992903 Z" id="center" fill="url(#linearGradient-1)"></path>
-            <g id="half" transform="translate(140.437200, 255.011855) scale(-1, 1) translate(-140.437200, -255.011855) ">
-                <use fill="black" fill-opacity="1" filter="url(#filter-4)" xlink:href="#path-3"></use>
-                <use fill="url(#linearGradient-2)" fill-rule="evenodd" xlink:href="#path-3"></use>
-            </g>
-        </g>
-    </g>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M12.0246161,21.8174863 L12.0246161,20.3628098 C16.6324777,20.3495038 20.3634751,16.6108555 20.3634751,11.9996673 C20.3634751,7.38881189 16.6324777,3.65016355 12.0246161,3.63685757 L12.0246161,2.18218107 C17.4358264,2.1958197 21.8178189,6.58546322 21.8178189,11.9996673 C21.8178189,17.4142042 17.4358264,21.8041803 12.0246161,21.8174863 L12.0246161,21.8174863 Z M12.0246161,16.7259522 C14.623607,16.7123136 16.7272828,14.6023175 16.7272828,11.9996673 C16.7272828,9.39734991 14.623607,7.28735377 12.0246161,7.27371516 L12.0246161,5.81937131 C15.4272884,5.8326773 18.1819593,8.59400123 18.1819593,11.9996673 C18.1819593,15.4056661 15.4272884,18.1669901 12.0246161,18.1802961 L12.0246161,16.7259522 Z M12.0246161,9.45556355 C13.4187503,9.46886953 14.5454344,10.6022066 14.5454344,11.9996673 C14.5454344,13.3974608 13.4187503,14.5307978 12.0246161,14.5441038 L12.0246161,9.45556355 Z M0,11.9996673 C0,18.6273771 5.37229031,24 12,24 C18
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 </svg>
\ No newline at end of file
diff --git a/browser/branding/nightly/content/jar.mn b/browser/branding/nightly/content/jar.mn
index de166fe3636f..5dd066c27f9c 100644
--- a/browser/branding/nightly/content/jar.mn
+++ b/browser/branding/nightly/content/jar.mn
@@ -20,3 +20,4 @@ browser.jar:
   content/branding/identity-icons-brand.svg
   content/branding/aboutDialog.css
   content/branding/horizontal-lockup.svg
+* content/branding/tor-styles.css
diff --git a/browser/branding/nightly/content/tor-styles.css b/browser/branding/nightly/content/tor-styles.css
new file mode 100644
index 000000000000..52e1761e5459
--- /dev/null
+++ b/browser/branding/nightly/content/tor-styles.css
@@ -0,0 +1,13 @@
+%include ../../tor-styles.inc.css
+
+/* default theme*/
+:root,
+/* light theme*/
+:root:-moz-lwtheme-darktext {
+    --tor-branding-color: var(--blue-60);
+}
+
+/* dark theme */
+:root:-moz-lwtheme-brighttext {
+    --tor-branding-color: var(--blue-40);
+}
\ No newline at end of file
diff --git a/browser/branding/official/content/identity-icons-brand.svg b/browser/branding/official/content/identity-icons-brand.svg
index 62472ad1826e..30cd52ba5c51 100644
--- a/browser/branding/official/content/identity-icons-brand.svg
+++ b/browser/branding/official/content/identity-icons-brand.svg
@@ -1,31 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg width="512px" height="512px" viewBox="-17 -17 546 546" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-    <defs>
-        <linearGradient x1="50%" y1="100%" x2="50%" y2="0%" id="linearGradient-1">
-            <stop stop-color="#420C5D" offset="0%"></stop>
-            <stop stop-color="#951AD1" offset="100%"></stop>
-        </linearGradient>
-        <path d="M25,29 C152.577777,29 256,131.974508 256,259 C256,386.025492 152.577777,489 25,489 L25,29 Z" id="path-2"></path>
-        <filter x="-18.2%" y="-7.4%" width="129.4%" height="114.8%" filterUnits="objectBoundingBox" id="filter-3">
-            <feOffset dx="-8" dy="0" in="SourceAlpha" result="shadowOffsetOuter1"></feOffset>
-            <feGaussianBlur stdDeviation="10" in="shadowOffsetOuter1" result="shadowBlurOuter1"></feGaussianBlur>
-            <feColorMatrix values="0 0 0 0 0.250980392   0 0 0 0 0.250980392   0 0 0 0 0.250980392  0 0 0 0.2 0" type="matrix" in="shadowBlurOuter1"></feColorMatrix>
-        </filter>
-    </defs>
-    <g id="Assets" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g id="icon_512x512">
-            <g id="Group">
-                <g id="tb_icon/Stable">
-                    <g id="Stable">
-                        <circle id="background" fill="#F2E4FF" fill-rule="nonzero" cx="256" cy="256" r="246"></circle>
-                        <path d="M256.525143,465.439707 L256.525143,434.406609 C354.826191,434.122748 434.420802,354.364917 434.420802,255.992903 C434.420802,157.627987 354.826191,77.8701558 256.525143,77.5862948 L256.525143,46.5531962 C371.964296,46.8441537 465.446804,140.489882 465.446804,255.992903 C465.446804,371.503022 371.964296,465.155846 256.525143,465.439707 Z M256.525143,356.820314 C311.970283,356.529356 356.8487,311.516106 356.8487,255.992903 C356.8487,200.476798 311.970283,155.463547 256.525143,155.17259 L256.525143,124.146588 C329.115485,124.430449 387.881799,183.338693 387.881799,255.992903 C387.881799,328.654211 329.115485,387.562455 256.525143,387.846316 L256.525143,356.820314 Z M256.525143,201.718689 C286.266674,202.00255 310.3026,226.180407 310.3026,255.992903 C310.3026,285.812497 286.266674,309.990353 256.525143,310.274214 L256.525143,201.718689 Z M0,255.992903 C0,397.384044 114.60886,512 256,512 C397.384044,512 512,397.384044 512,255.992903 C512,114.60886 397.384
 044,0 256,0 C114.60886,0 0,114.60886 0,255.992903 Z" id="center" fill="url(#linearGradient-1)"></path>
-                        <g id="half" transform="translate(140.500000, 259.000000) scale(-1, 1) translate(-140.500000, -259.000000) ">
-                            <use fill="black" fill-opacity="1" filter="url(#filter-3)" xlink:href="#path-2"></use>
-                            <use fill="url(#linearGradient-1)" fill-rule="evenodd" xlink:href="#path-2"></use>
-                        </g>
-                    </g>
-                </g>
-            </g>
-        </g>
-    </g>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M12.0246161,21.8174863 L12.0246161,20.3628098 C16.6324777,20.3495038 20.3634751,16.6108555 20.3634751,11.9996673 C20.3634751,7.38881189 16.6324777,3.65016355 12.0246161,3.63685757 L12.0246161,2.18218107 C17.4358264,2.1958197 21.8178189,6.58546322 21.8178189,11.9996673 C21.8178189,17.4142042 17.4358264,21.8041803 12.0246161,21.8174863 L12.0246161,21.8174863 Z M12.0246161,16.7259522 C14.623607,16.7123136 16.7272828,14.6023175 16.7272828,11.9996673 C16.7272828,9.39734991 14.623607,7.28735377 12.0246161,7.27371516 L12.0246161,5.81937131 C15.4272884,5.8326773 18.1819593,8.59400123 18.1819593,11.9996673 C18.1819593,15.4056661 15.4272884,18.1669901 12.0246161,18.1802961 L12.0246161,16.7259522 Z M12.0246161,9.45556355 C13.4187503,9.46886953 14.5454344,10.6022066 14.5454344,11.9996673 C14.5454344,13.3974608 13.4187503,14.5307978 12.0246161,14.5441038 L12.0246161,9.45556355 Z M0,11.9996673 C0,18.6273771 5.37229031,24 12,24 C18
 .6273771,24 24,18.6273771 24,11.9996673 C24,5.37229031 18.6273771,0 12,0 C5.37229031,0 0,5.37229031 0,11.9996673 Z"/>
 </svg>
\ No newline at end of file
diff --git a/browser/branding/official/content/jar.mn b/browser/branding/official/content/jar.mn
index de166fe3636f..5dd066c27f9c 100644
--- a/browser/branding/official/content/jar.mn
+++ b/browser/branding/official/content/jar.mn
@@ -20,3 +20,4 @@ browser.jar:
   content/branding/identity-icons-brand.svg
   content/branding/aboutDialog.css
   content/branding/horizontal-lockup.svg
+* content/branding/tor-styles.css
diff --git a/browser/branding/official/content/tor-styles.css b/browser/branding/official/content/tor-styles.css
new file mode 100644
index 000000000000..e4ccb5c767a9
--- /dev/null
+++ b/browser/branding/official/content/tor-styles.css
@@ -0,0 +1,14 @@
+%include ../../tor-styles.inc.css
+
+/* default theme*/
+:root,
+/* light theme*/
+:root:-moz-lwtheme-darktext {
+    --tor-branding-color: var(--purple-60);
+}
+
+/* dark theme */
+:root:-moz-lwtheme-brighttext {
+    --tor-branding-color: var(--purple-30);
+}
+
diff --git a/browser/branding/tor-styles.inc.css b/browser/branding/tor-styles.inc.css
new file mode 100644
index 000000000000..55dc9b6238b3
--- /dev/null
+++ b/browser/branding/tor-styles.inc.css
@@ -0,0 +1,87 @@
+:root {
+  /* photon colors, not all of them are available for whatever reason
+     in firefox, so here they are */
+
+  --magenta-50: #ff1ad9;
+  --magenta-60: #ed00b5;
+  --magenta-70: #b5007f;
+  --magenta-80: #7d004f;
+  --magenta-90: #440027;
+
+  --purple-30: #c069ff;
+  --purple-40: #ad3bff;
+  --purple-50: #9400ff;
+  --purple-60: #8000d7;
+  --purple-70: #6200a4;
+  --purple-80: #440071;
+  --purple-90: #25003e;
+
+  --blue-40: #45a1ff;
+  --blue-50: #0a84ff;
+  --blue-50-a30: rgba(10, 132, 255, 0.3);
+  --blue-60: #0060df;
+  --blue-70: #003eaa;
+  --blue-80: #002275;
+  --blue-90: #000f40;
+
+  --teal-50: #00feff;
+  --teal-60: #00c8d7;
+  --teal-70: #008ea4;
+  --teal-80: #005a71;
+  --teal-90: #002d3e;
+
+  --green-50: #30e60b;
+  --green-60: #12bc00;
+  --green-70: #058b00;
+  --green-80: #006504;
+  --green-90: #003706;
+
+  --yellow-50: #ffe900;
+  --yellow-60: #d7b600;
+  --yellow-70: #a47f00;
+  --yellow-80: #715100;
+  --yellow-90: #3e2800;
+
+  --red-50: #ff0039;
+  --red-60: #d70022;
+  --red-70: #a4000f;
+  --red-80: #5a0002;
+  --red-90: #3e0200;
+
+  --orange-50: #ff9400;
+  --orange-60: #d76e00;
+  --orange-70: #a44900;
+  --orange-80: #712b00;
+  --orange-90: #3e1300;
+
+  --grey-10: #f9f9fa;
+  --grey-10-a10: rgba(249, 249, 250, 0.1);
+  --grey-10-a20: rgba(249, 249, 250, 0.2);
+  --grey-10-a40: rgba(249, 249, 250, 0.4);
+  --grey-10-a60: rgba(249, 249, 250, 0.6);
+  --grey-10-a80: rgba(249, 249, 250, 0.8);
+  --grey-20: #ededf0;
+  --grey-30: #d7d7db;
+  --grey-40: #b1b1b3;
+  --grey-50: #737373;
+  --grey-60: #4a4a4f;
+  --grey-70: #38383d;
+  --grey-80: #2a2a2e;
+  --grey-90: #0c0c0d;
+  --grey-90-a05: rgba(12, 12, 13, 0.05);
+  --grey-90-a10: rgba(12, 12, 13, 0.1);
+  --grey-90-a20: rgba(12, 12, 13, 0.2);
+  --grey-90-a30: rgba(12, 12, 13, 0.3);
+  --grey-90-a40: rgba(12, 12, 13, 0.4);
+  --grey-90-a50: rgba(12, 12, 13, 0.5);
+  --grey-90-a60: rgba(12, 12, 13, 0.6);
+  --grey-90-a70: rgba(12, 12, 13, 0.7);
+  --grey-90-a80: rgba(12, 12, 13, 0.8);
+  --grey-90-a90: rgba(12, 12, 13, 0.9);
+
+  --ink-70: #363959;
+  --ink-80: #202340;
+  --ink-90: #0f1126;
+
+  --white-100: #ffffff;
+}
\ No newline at end of file
diff --git a/browser/components/BrowserGlue.jsm b/browser/components/BrowserGlue.jsm
index 5f708fca3d5c..aae76c7be6bc 100644
--- a/browser/components/BrowserGlue.jsm
+++ b/browser/components/BrowserGlue.jsm
@@ -503,6 +503,20 @@ let JSWINDOWACTORS = {
     allFrames: true,
   },
 
+  TorConnect: {
+    parent: {
+      moduleURI: "resource:///modules/TorConnectParent.jsm",
+    },
+    child: {
+      moduleURI: "resource:///modules/TorConnectChild.jsm",
+      events: {
+        DOMWindowCreated: {},
+      },
+    },
+
+    matches: ["about:torconnect","about:torconnect?*"],
+  },
+
   Translation: {
     parent: {
       moduleURI: "resource:///modules/translation/TranslationParent.jsm",
@@ -2492,7 +2506,28 @@ BrowserGlue.prototype = {
 
       {
         task: () => {
-          OnionAliasStore.init();
+          const { TorConnect, TorConnectTopics } = ChromeUtils.import(
+            "resource:///modules/TorConnect.jsm"
+          );
+          if (!TorConnect.shouldShowTorConnect) {
+            // we will take this path when the user is using the legacy tor launcher or
+            // when Tor Browser didn't launch its own tor.
+            OnionAliasStore.init();
+          } else {
+            // this path is taken when using about:torconnect, we wait to init
+            // after we are bootstrapped and connected to tor
+            const topic = TorConnectTopics.BootstrapComplete;
+            let bootstrapObserver = {
+              observe(aSubject, aTopic, aData) {
+                if (aTopic === topic) {
+                  OnionAliasStore.init();
+                  // we only need to init once, so remove ourselves as an obvserver
+                  Services.obs.removeObserver(this, topic);
+                }
+              }
+            };
+            Services.obs.addObserver(bootstrapObserver, topic);
+          }
         },
       },
 
diff --git a/browser/components/about/AboutRedirector.cpp b/browser/components/about/AboutRedirector.cpp
index e7c377d655e7..db5f3ead4bb8 100644
--- a/browser/components/about/AboutRedirector.cpp
+++ b/browser/components/about/AboutRedirector.cpp
@@ -120,6 +120,10 @@ static const RedirEntry kRedirMap[] = {
          nsIAboutModule::URI_MUST_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT |
          nsIAboutModule::HIDE_FROM_ABOUTABOUT},
 #endif
+    {"torconnect", "chrome://browser/content/torconnect/aboutTorConnect.xhtml",
+     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+         nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT |
+         nsIAboutModule::HIDE_FROM_ABOUTABOUT},
 };
 
 static nsAutoCString GetAboutModuleName(nsIURI* aURI) {
diff --git a/browser/components/about/components.conf b/browser/components/about/components.conf
index 8e04467c05da..01c99ad4ed0c 100644
--- a/browser/components/about/components.conf
+++ b/browser/components/about/components.conf
@@ -26,6 +26,7 @@ pages = [
     'robots',
     'sessionrestore',
     'tabcrashed',
+    'torconnect',
     'welcome',
     'welcomeback',
 ]
diff --git a/browser/components/moz.build b/browser/components/moz.build
index b660be047b14..fb90c499c616 100644
--- a/browser/components/moz.build
+++ b/browser/components/moz.build
@@ -59,6 +59,7 @@ DIRS += [
     'syncedtabs',
     'uitour',
     'urlbar',
+    'torconnect',
     'torpreferences',
     'translation',
 ]
diff --git a/browser/components/onionservices/HttpsEverywhereControl.jsm b/browser/components/onionservices/HttpsEverywhereControl.jsm
index 525ed5233be7..d673de4cd6e5 100644
--- a/browser/components/onionservices/HttpsEverywhereControl.jsm
+++ b/browser/components/onionservices/HttpsEverywhereControl.jsm
@@ -41,6 +41,7 @@ const SECUREDROP_TOR_ONION_CHANNEL = {
 class HttpsEverywhereControl {
   constructor() {
     this._extensionMessaging = null;
+    this._init();
   }
 
   async _sendMessage(type, object) {
@@ -61,7 +62,6 @@ class HttpsEverywhereControl {
    * Installs the .tor.onion update channel in https-everywhere
    */
   async installTorOnionUpdateChannel(retries = 5) {
-    this._init();
 
     // TODO: https-everywhere store is initialized asynchronously, so sending a message
     // immediately results in a `store.get is undefined` error.
@@ -143,5 +143,20 @@ class HttpsEverywhereControl {
     if (!this._extensionMessaging) {
       this._extensionMessaging = new ExtensionMessaging();
     }
+
+    // update all of the existing https-everywhere channels
+    setTimeout(async () => {
+      let pinnedChannels = await this._sendMessage("get_pinned_update_channels");
+      for(let channel of pinnedChannels.update_channels) {
+        this._sendMessage("update_update_channel", channel);
+      }
+
+      let storedChannels = await this._sendMessage("get_stored_update_channels");
+      for(let channel of storedChannels.update_channels) {
+        this._sendMessage("update_update_channel", channel);
+      }
+    }, 0);
+
+
   }
 }
diff --git a/browser/components/sessionstore/SessionStore.jsm b/browser/components/sessionstore/SessionStore.jsm
index 6ab86fd5913e..bf9919041f6b 100644
--- a/browser/components/sessionstore/SessionStore.jsm
+++ b/browser/components/sessionstore/SessionStore.jsm
@@ -213,6 +213,10 @@ ChromeUtils.defineModuleGetter(
   "resource://gre/modules/sessionstore/SessionHistory.jsm"
 );
 
+const { TorProtocolService } = ChromeUtils.import(
+    "resource:///modules/TorProtocolService.jsm"
+);
+
 XPCOMUtils.defineLazyServiceGetters(this, {
   gScreenManager: ["@mozilla.org/gfx/screenmanager;1", "nsIScreenManager"],
   Telemetry: ["@mozilla.org/base/telemetry;1", "nsITelemetry"],
diff --git a/browser/components/torconnect/TorConnectChild.jsm b/browser/components/torconnect/TorConnectChild.jsm
new file mode 100644
index 000000000000..bd6dd549f156
--- /dev/null
+++ b/browser/components/torconnect/TorConnectChild.jsm
@@ -0,0 +1,9 @@
+// Copyright (c) 2021, The Tor Project, Inc.
+
+var EXPORTED_SYMBOLS = ["TorConnectChild"];
+
+const { RemotePageChild } = ChromeUtils.import(
+  "resource://gre/actors/RemotePageChild.jsm"
+);
+
+class TorConnectChild extends RemotePageChild {}
diff --git a/browser/components/torconnect/TorConnectParent.jsm b/browser/components/torconnect/TorConnectParent.jsm
new file mode 100644
index 000000000000..792f2af10ea6
--- /dev/null
+++ b/browser/components/torconnect/TorConnectParent.jsm
@@ -0,0 +1,150 @@
+// Copyright (c) 2021, The Tor Project, Inc.
+
+var EXPORTED_SYMBOLS = ["TorConnectParent"];
+
+const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
+const { TorStrings } = ChromeUtils.import("resource:///modules/TorStrings.jsm");
+const { TorConnect, TorConnectTopics, TorConnectState } = ChromeUtils.import(
+  "resource:///modules/TorConnect.jsm"
+);
+
+const TorLauncherPrefs = Object.freeze({
+  quickstart: "extensions.torlauncher.quickstart",
+});
+
+/*
+This object is basically a marshalling interface between the TorConnect module
+and a particular about:torconnect page
+*/
+
+class TorConnectParent extends JSWindowActorParent {
+  constructor(...args) {
+    super(...args);
+
+    const self = this;
+
+    this.state = {
+      State: TorConnect.state,
+      StateChanged: false,
+      Exit: false,
+      ErrorMessage: TorConnect.errorMessage,
+      ErrorDetails: TorConnect.errorDetails,
+      BootstrapProgress: TorConnect.bootstrapProgress,
+      BootstrapStatus: TorConnect.bootstrapStatus,
+      ShowCopyLog: TorConnect.logHasWarningOrError,
+      QuickStartEnabled: Services.prefs.getBoolPref(TorLauncherPrefs.quickstart, false),
+    };
+
+    // JSWindowActiveParent derived objects cannot observe directly, so create a member
+    // object to do our observing for us
+    //
+    // This object converts the various lifecycle events from the TorConnect module, and
+    // maintains a state object which we pass down to our about:torconnect page, which uses
+    // the state object to update its UI
+    this.torConnectObserver = {
+      observe(aSubject, aTopic, aData) {
+        let obj = aSubject?.wrappedJSObject;
+
+        // update our state struct based on received torconnect topics and forward on
+        // to aboutTorConnect.js
+        self.state.StateChanged = false;
+        switch(aTopic) {
+          case TorConnectTopics.StateChange: {
+            self.state.State = obj.state;
+            self.state.StateChanged = true;
+            // clear any previous error information if we are bootstrapping
+            if (self.state.State === TorConnectState.Bootstrapping) {
+              self.state.ErrorMessage = null;
+              self.state.ErrorDetails = null;
+            }
+            break;
+          }
+          case TorConnectTopics.BootstrapProgress: {
+            self.state.BootstrapProgress = obj.progress;
+            self.state.BootstrapStatus = obj.status;
+            self.state.ShowCopyLog = obj.hasWarnings;
+            break;
+          }
+          case TorConnectTopics.BootstrapComplete: {
+            // tells about:torconnect pages to close or redirect themselves
+            // this flag will only be set if an about:torconnect page
+            // reaches the Bootstrapped state, so if a user
+            // navigates to about:torconnect manually after bootstrap, the page
+            // will not auto-close on them
+            self.state.Exit = true;
+            break;
+          }
+          case TorConnectTopics.BootstrapError: {
+            self.state.ErrorMessage = obj.message;
+            self.state.ErrorDetails = obj.details;
+            self.state.ShowCopyLog = true;
+            break;
+          }
+          case TorConnectTopics.FatalError: {
+            // TODO: handle
+            break;
+          }
+          case "nsPref:changed": {
+            if (aData === TorLauncherPrefs.quickstart) {
+              self.state.QuickStartEnabled = Services.prefs.getBoolPref(TorLauncherPrefs.quickstart);
+            }
+            break;
+          }
+          default: {
+            console.log(`TorConnect: unhandled observe topic '${aTopic}'`);
+          }
+        }
+
+        self.sendAsyncMessage("torconnect:state-change", self.state);
+      },
+    };
+
+    // observe all of the torconnect:.* topics
+    for (const key in TorConnectTopics) {
+      const topic = TorConnectTopics[key];
+      Services.obs.addObserver(this.torConnectObserver, topic);
+    }
+    Services.prefs.addObserver(TorLauncherPrefs.quickstart, this.torConnectObserver);
+  }
+
+  willDestroy() {
+    // stop observing all of our torconnect:.* topics
+    for (const key in TorConnectTopics) {
+      const topic = TorConnectTopics[key];
+      Services.obs.removeObserver(this.torConnectObserver, topic);
+    }
+    Services.prefs.removeObserver(TorLauncherPrefs.quickstart, this.torConnectObserver);
+  }
+
+  receiveMessage(message) {
+    switch (message.name) {
+      case "torconnect:set-quickstart":
+        Services.prefs.setBoolPref(TorLauncherPrefs.quickstart, message.data);
+        break;
+      case "torconnect:open-tor-preferences":
+        TorConnect.openTorPreferences();
+        break;
+      case "torconnect:copy-tor-logs":
+        return TorConnect.copyTorLogs();
+      case "torconnect:cancel-bootstrap":
+        TorConnect.cancelBootstrap();
+        break;
+      case "torconnect:begin-bootstrap":
+        TorConnect.beginBootstrap();
+        break;
+      case "torconnect:get-init-args":
+        // called on AboutTorConnect.init(), pass down all state data it needs to init
+
+        // pretend this is a state transition on init
+        // so we always get fresh UI
+        this.state.StateChanged = true;
+        return {
+            TorStrings: TorStrings,
+            TorConnectState: TorConnectState,
+            Direction: Services.locale.isAppLocaleRTL ? "rtl" : "ltr",
+            State: this.state,
+        };
+    }
+    return undefined;
+  }
+}
diff --git a/browser/components/torconnect/content/aboutTorConnect.css b/browser/components/torconnect/content/aboutTorConnect.css
new file mode 100644
index 000000000000..3bdc6ff22192
--- /dev/null
+++ b/browser/components/torconnect/content/aboutTorConnect.css
@@ -0,0 +1,155 @@
+
+/* Copyright (c) 2021, The Tor Project, Inc. */
+
+ at import url("chrome://browser/skin/error-pages.css");
+ at import url("chrome://branding/content/tor-styles.css");
+
+:root {
+  --onion-opacity: 1;
+  --onion-color: var(--card-outline-color);
+  --onion-radius: 50px;
+}
+
+/* override firefox's default blue focus coloring */
+:focus {
+  outline:  none!important;
+  box-shadow: 0 0 0 3px var(--purple-30) !important;
+  border:  1px var(--purple-80) solid !important;
+}
+
+ at media (prefers-color-scheme: dark)
+{
+  :focus {
+    box-shadow: 0 0 0 3px var(--purple-50)!important;
+  }
+}
+
+/* override firefox's default blue border on hover */
+input[type="checkbox"]:not(:disabled):hover {
+  border-color: var(--purple-70);
+}
+
+/* fix checkbox visibility when dark mode enabled */
+input[type="checkbox"]:checked {
+  fill: var(--in-content-page-color);
+}
+
+#connectButton {
+  background-color: var(--purple-60);
+}
+
+#connectButton:hover {
+  background-color: var(--purple-70);
+}
+
+#connectButton:active {
+  background-color: var(--purple-80);
+}
+
+#progressBackground {
+  position:fixed;
+  padding:0;
+  margin:0;
+  top:0;
+  left:0;
+  width: 0%;
+  height: 7px;
+  background-image: linear-gradient(90deg, rgb(20, 218, 221) 0%, rgb(128, 109, 236) 100%);
+  border-radius: 0;
+}
+
+#connectPageContainer {
+  margin-top: 10vh;
+  width: 50%;
+}
+
+#quickstartCheckbox, #quickstartCheckboxLabel {
+  vertical-align: middle;
+}
+
+#copyLogButton {
+  position: relative;
+}
+
+/* mirrors p element spacing */
+#copyLogContainer {
+  margin:  1em 0;
+  height:  1.2em;
+  min-height:  1.2em;
+}
+
+#copyLogLink {
+  position:  relative;
+  display:  inline-block;
+  color:  var(--in-content-link-color);
+}
+
+/* hidden apparently only works if no display is set; who knew? */
+#copyLogLink[hidden="true"] {
+  display:  none;
+}
+
+#copyLogLink:hover {
+  cursor:pointer;
+}
+
+/* This div:
+   - is centered over its parent
+   - centers its child
+   - has z-index above parent
+   - ignores mouse events from parent
+*/
+#copyLogTooltip {
+  pointer-events: none;
+  visibility: hidden;
+  display:  flex;
+  justify-content: center;
+  white-space: nowrap;
+  width: 0;
+  position:  absolute;
+
+  z-index:  1;
+  left: 50%;
+  bottom:  calc(100% + 0.25em);
+}
+
+/* tooltip content (any content could go here) */
+#copyLogTooltipText {
+  background-color: var(--green-50);
+  color: var(--green-90);
+  border-radius: 2px;
+  padding: 4px;
+  line-height: 13px;
+  font: 11px sans-serif;
+  font-weight: 400;
+}
+
+/* our speech bubble tail */
+#copyLogTooltipText::after {
+  content: "";
+  position: absolute;
+  top: 100%;
+  left: 50%;
+  margin-left: -4px;
+  border-width: 4px;
+  border-style: solid;
+  border-color: var(--green-50) transparent transparent transparent;
+}
+
+body {
+  padding: 0px !important;
+  justify-content: space-between;
+  background-color: var(--in-content-page-background);
+}
+
+.title {
+  background-image: url("chrome://browser/content/torconnect/onion.svg");
+  -moz-context-properties: fill, fill-opacity;
+  fill-opacity: 1;
+  fill: var(--onion-color);
+}
+
+.title.error {
+  background-image: url("chrome://browser/content/torconnect/onion-slash.svg");
+}
+
diff --git a/browser/components/torconnect/content/aboutTorConnect.js b/browser/components/torconnect/content/aboutTorConnect.js
new file mode 100644
index 000000000000..4eed3cf6a5c3
--- /dev/null
+++ b/browser/components/torconnect/content/aboutTorConnect.js
@@ -0,0 +1,304 @@
+// Copyright (c) 2021, The Tor Project, Inc.
+
+/* eslint-env mozilla/frame-script */
+
+// populated in AboutTorConnect.init()
+let TorStrings = {};
+let TorConnectState = {};
+
+class AboutTorConnect {
+  selectors = Object.freeze({
+    textContainer: {
+      title: "div.title",
+      titleText: "h1.title-text",
+    },
+    progress: {
+      description: "p#connectShortDescText",
+      meter: "div#progressBackground",
+    },
+    copyLog: {
+      link: "span#copyLogLink",
+      tooltip: "div#copyLogTooltip",
+      tooltipText: "span#copyLogTooltipText",
+    },
+    quickstart: {
+      checkbox: "input#quickstartCheckbox",
+      label: "label#quickstartCheckboxLabel",
+    },
+    buttons: {
+      connect: "button#connectButton",
+      cancel: "button#cancelButton",
+      advanced: "button#advancedButton",
+    },
+  })
+
+  elements = Object.freeze({
+    title: document.querySelector(this.selectors.textContainer.title),
+    titleText: document.querySelector(this.selectors.textContainer.titleText),
+    progressDescription: document.querySelector(this.selectors.progress.description),
+    progressMeter: document.querySelector(this.selectors.progress.meter),
+    copyLogLink: document.querySelector(this.selectors.copyLog.link),
+    copyLogTooltip: document.querySelector(this.selectors.copyLog.tooltip),
+    copyLogTooltipText: document.querySelector(this.selectors.copyLog.tooltipText),
+    quickstartCheckbox: document.querySelector(this.selectors.quickstart.checkbox),
+    quickstartLabel: document.querySelector(this.selectors.quickstart.label),
+    connectButton: document.querySelector(this.selectors.buttons.connect),
+    cancelButton: document.querySelector(this.selectors.buttons.cancel),
+    advancedButton: document.querySelector(this.selectors.buttons.advanced),
+  })
+
+  // a redirect url can be passed as a query parameter for the page to
+  // forward us to once bootstrap completes (otherwise the window will just close)
+  redirect = null
+
+  beginBootstrap() {
+    this.hide(this.elements.connectButton);
+    this.show(this.elements.cancelButton);
+    this.elements.cancelButton.focus();
+    RPMSendAsyncMessage("torconnect:begin-bootstrap");
+  }
+
+  cancelBootstrap() {
+    RPMSendAsyncMessage("torconnect:cancel-bootstrap");
+  }
+
+  /*
+  Element helper methods
+  */
+
+  show(element) {
+    element.removeAttribute("hidden");
+  }
+
+  hide(element) {
+    element.setAttribute("hidden", "true");
+  }
+
+  setTitle(title, error) {
+    this.elements.titleText.textContent = title;
+    document.title = title;
+
+    if (error) {
+      this.elements.title.classList.add("error");
+    } else {
+      this.elements.title.classList.remove("error");
+    }
+  }
+
+  setProgress(description, visible, percent) {
+    this.elements.progressDescription.textContent = description;
+    if (visible) {
+      this.show(this.elements.progressMeter);
+      this.elements.progressMeter.style.width = `${percent}%`;
+    } else {
+      this.hide(this.elements.progressMeter);
+    }
+  }
+
+  /*
+  These methods update the UI based on the current TorConnect state
+  */
+
+  updateUI(state) {
+    console.log(state);
+
+    // calls update_$state()
+    this[`update_${state.State}`](state);
+    this.elements.quickstartCheckbox.checked = state.QuickStartEnabled;
+  }
+
+  /* Per-state updates */
+
+  update_Initial(state) {
+    const hasError = false;
+    const showProgressbar = false;
+
+    this.setTitle(TorStrings.torConnect.torConnect, hasError);
+    this.setProgress(TorStrings.settings.torPreferencesDescription, showProgressbar);
+    this.hide(this.elements.copyLogLink);
+    this.hide(this.elements.connectButton);
+    this.hide(this.elements.advancedButton);
+    this.hide(this.elements.cancelButton);
+  }
+
+  update_Configuring(state) {
+    const hasError = state.ErrorMessage != null;
+    const showProgressbar = false;
+
+    if (hasError) {
+      this.setTitle(state.ErrorMessage, hasError);
+      this.setProgress(state.ErrorDetails, showProgressbar);
+      this.show(this.elements.copyLogLink);
+      this.elements.connectButton.textContent = TorStrings.torConnect.tryAgain;
+    } else {
+      this.setTitle(TorStrings.torConnect.torConnect, hasError);
+      this.setProgress(TorStrings.settings.torPreferencesDescription, showProgressbar);
+      this.hide(this.elements.copyLogLink);
+      this.elements.connectButton.textContent = TorStrings.torConnect.torConnectButton;
+    }
+    this.show(this.elements.connectButton);
+    if (state.StateChanged) {
+      this.elements.connectButton.focus();
+    }
+    this.show(this.elements.advancedButton);
+    this.hide(this.elements.cancelButton);
+  }
+
+  update_AutoConfiguring(state) {
+    // TODO: noop until this state is used
+  }
+
+  update_Bootstrapping(state) {
+    const hasError = false;
+    const showProgressbar = true;
+
+    this.setTitle(state.BootstrapStatus ? state.BootstrapStatus : TorStrings.torConnect.torConnecting, hasError);
+    this.setProgress(TorStrings.settings.torPreferencesDescription, showProgressbar, state.BootstrapProgress);
+    if (state.ShowCopyLog) {
+      this.show(this.elements.copyLogLink);
+    } else {
+      this.hide(this.elements.copyLogLink);
+    }
+    this.hide(this.elements.connectButton);
+    this.hide(this.elements.advancedButton);
+    this.show(this.elements.cancelButton);
+    if (state.StateChanged) {
+      this.elements.cancelButton.focus();
+    }
+  }
+
+  update_Error(state) {
+    const hasError = true;
+    const showProgressbar = false;
+
+    this.setTitle(state.ErrorMessage, hasError);
+    this.setProgress(state.ErrorDetails, showProgressbar);
+    this.show(this.elements.copyLogLink);
+    this.elements.connectButton.textContent = TorStrings.torConnect.tryAgain;
+    this.show(this.elements.connectButton);
+    this.show(this.elements.advancedButton);
+    this.hide(this.elements.cancelButton);
+  }
+
+  update_FatalError(state) {
+    // TODO: noop until this state is used
+  }
+
+  update_Bootstrapped(state) {
+    const hasError = false;
+    const showProgressbar = true;
+
+    this.setTitle(TorStrings.torConnect.torConnected, hasError);
+    this.setProgress(TorStrings.settings.torPreferencesDescription, showProgressbar, 100);
+    this.hide(this.elements.connectButton);
+    this.hide(this.elements.advancedButton);
+    this.hide(this.elements.cancelButton);
+
+    // only exit about:torconnect if TorConnectParent directs us to
+    if (state.Exit) {
+      if (this.redirect) {
+        // first try to forward to final destination
+        document.location = this.redirect;
+      } else {
+        // or else close the window
+        window.close();
+      }
+    }
+  }
+
+  update_Disabled(state) {
+    // TODO: we should probably have some UX here if a user goes to about:torconnect when
+    // it isn't in use (eg using tor-launcher or system tor)
+  }
+
+  async initElements(direction) {
+
+    document.documentElement.setAttribute("dir", direction);
+
+    // sets the text content while keeping the child elements intact
+    this.elements.copyLogLink.childNodes[0].nodeValue =
+      TorStrings.torConnect.copyLog;
+    this.elements.copyLogLink.addEventListener("click", async (event) => {
+      const copiedMessage = await RPMSendQuery("torconnect:copy-tor-logs");
+      this.elements.copyLogTooltipText.textContent = copiedMessage;
+      this.elements.copyLogTooltipText.style.visibility = "visible";
+
+      // clear previous timeout if one already exists
+      if (this.copyLogTimeoutId) {
+        clearTimeout(this.copyLogTimeoutId);
+      }
+
+      // hide tooltip after X ms
+      const TOOLTIP_TIMEOUT = 2000;
+      this.copyLogTimeoutId = setTimeout(() => {
+        this.elements.copyLogTooltipText.style.visibility = "hidden";
+        this.copyLogTimeoutId = 0;
+      }, TOOLTIP_TIMEOUT);
+    });
+
+    this.elements.quickstartCheckbox.addEventListener("change", () => {
+      const quickstart = this.elements.quickstartCheckbox.checked;
+      RPMSendAsyncMessage("torconnect:set-quickstart", quickstart);
+    });
+    this.elements.quickstartLabel.textContent = TorStrings.settings.quickstartCheckbox;
+
+    this.elements.connectButton.textContent =
+      TorStrings.torConnect.torConnectButton;
+    this.elements.connectButton.addEventListener("click", () => {
+      this.beginBootstrap();
+    });
+
+    this.elements.advancedButton.textContent = TorStrings.torConnect.torConfigure;
+    this.elements.advancedButton.addEventListener("click", () => {
+      RPMSendAsyncMessage("torconnect:open-tor-preferences");
+    });
+
+    this.elements.cancelButton.textContent = TorStrings.torConnect.cancel;
+    this.elements.cancelButton.addEventListener("click", () => {
+      this.cancelBootstrap();
+    });
+  }
+
+  initObservers() {
+    // TorConnectParent feeds us state blobs to we use to update our UI
+    RPMAddMessageListener("torconnect:state-change", ({ data }) => {
+      this.updateUI(data);
+    });
+  }
+
+  initKeyboardShortcuts() {
+    document.onkeydown = (evt) => {
+      // unfortunately it looks like we still haven't standardized keycodes to
+      // integers, so we must resort to a string compare here :(
+      // see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code for relevant documentation
+      if (evt.code === "Escape") {
+        this.cancelBootstrap();
+      }
+    };
+  }
+
+  async init() {
+    // see if a user has a final destination after bootstrapping
+    let params = new URLSearchParams(new URL(document.location.href).search);
+    if (params.has("redirect")) {
+      const encodedRedirect = params.get("redirect");
+      this.redirect = decodeURIComponent(encodedRedirect);
+    }
+
+    let args = await RPMSendQuery("torconnect:get-init-args");
+
+    // various constants
+    TorStrings = Object.freeze(args.TorStrings);
+    TorConnectState = Object.freeze(args.TorConnectState);
+
+    this.initElements(args.Direction);
+    this.initObservers();
+    this.initKeyboardShortcuts();
+
+    // populate UI based on current state
+    this.updateUI(args.State);
+  }
+}
+
+const aboutTorConnect = new AboutTorConnect();
+aboutTorConnect.init();
diff --git a/browser/components/torconnect/content/aboutTorConnect.xhtml b/browser/components/torconnect/content/aboutTorConnect.xhtml
new file mode 100644
index 000000000000..595bbdf9a70a
--- /dev/null
+++ b/browser/components/torconnect/content/aboutTorConnect.xhtml
@@ -0,0 +1,45 @@
+<!-- Copyright (c) 2021, The Tor Project, Inc. -->
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Security-Policy" content="default-src chrome:; object-src 'none'" />
+    <link rel="stylesheet" href="chrome://browser/skin/onionPattern.css" type="text/css" media="all" />
+    <link rel="stylesheet" href="chrome://browser/content/torconnect/aboutTorConnect.css" type="text/css" media="all" />
+  </head>
+  <body>
+    <div id="progressBackground"></div>
+    <div id="connectPageContainer" class="container">
+      <div id="text-container">
+        <div class="title">
+          <h1 class="title-text"/>
+        </div>
+        <div id="connectLongContent">
+          <div id="connectShortDesc">
+            <p id="connectShortDescText" />
+          </div>
+        </div>
+
+        <div id="copyLogContainer">
+          <span id="copyLogLink" hidden="true">
+            <div id="copyLogTooltip">
+              <span id="copyLogTooltipText"/>
+            </div>
+          </span>
+        </div>
+
+        <div id="quickstartContainer">
+          <input id="quickstartCheckbox" type="checkbox" />
+          <label id="quickstartCheckboxLabel" for="quickstartCheckbox"/>
+        </div>
+
+        <div id="connectButtonContainer" class="button-container">
+          <button id="advancedButton" hidden="true"></button>
+          <button id="cancelButton" hidden="true"></button>
+          <button id="connectButton" class="primary try-again" hidden="true"></button>
+        </div>
+      </div>
+    </div>
+#include ../../../themes/shared/onionPattern.inc.xhtml
+  </body>
+  <script src="chrome://browser/content/torconnect/aboutTorConnect.js"/>
+</html>
diff --git a/browser/components/torconnect/content/onion-slash.svg b/browser/components/torconnect/content/onion-slash.svg
new file mode 100644
index 000000000000..efb09700ec0b
--- /dev/null
+++ b/browser/components/torconnect/content/onion-slash.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <g fill-opacity="context-fill-opacity" fill="context-fill">
+  	<path d="M3.409559 13.112147C3.409559 13.112147 8.200807 8.103115 8.200807 8.103115C8.200807 8.103115 8.200807 6.516403 8.200807 6.516403C8.620819 6.516403 9.009719 6.703075 9.274171 6.998639C9.274171 6.998639 10.160863 6.080835 10.160863 6.080835C9.663071 5.567487 8.978607 5.256367 8.200807 5.256367C8.200807 5.256367 8.200807 4.400787 8.200807 4.400787C9.196391 4.400787 10.098639 4.805243 10.736435 5.458595C10.736435 5.458595 11.623127 4.540791 11.623127 4.540791C10.751991 3.669655 9.538623 3.125195 8.200807 3.125195C8.200807 3.125195 8.200807 2.269615 8.200807 2.269615C9.756407 2.269615 11.172003 2.907411 12.214255 3.918551C12.214255 3.918551 13.100947 3.000747 13.100947 3.000747C11.825355 1.756267 10.098639 0.994023 8.185251 0.994023C4.311807 0.994023 1.185051 4.120779 1.185051 7.994223C1.185051 10.016503 2.040631 11.836555 3.409559 13.112147C3.409559 13.112147 3.409559 13.112147 3.409559 13.112147"/>
+  	<path d="M14.205423 4.416343C14.205423 4.416343 13.287619 5.380815 13.287619 5.380815C13.692075 6.158615 13.909859 7.045307 13.909859 7.994223C13.909859 11.152091 11.358675 13.718831 8.200807 13.718831C8.200807 13.718831 8.200807 12.863251 8.200807 12.863251C10.891995 12.863251 13.069835 10.669855 13.069835 7.978667C13.069835 7.278647 12.929831 6.625295 12.665379 6.018611C12.665379 6.018611 11.685351 7.045307 11.685351 7.045307C11.763131 7.340871 11.809799 7.651991 11.809799 7.963111C11.809799 9.954279 10.207531 11.556547 8.216363 11.572103C8.216363 11.572103 8.216363 10.716523 8.216363 10.716523C9.725295 10.700967 10.954219 9.472043 10.954219 7.963111C10.954219 7.916443 10.954219 7.854219 10.954219 7.807551C10.954219 7.807551 4.887379 14.169955 4.887379 14.169955C5.867407 14.698859 6.987439 14.994423 8.185251 14.994423C12.058695 14.994423 15.185451 11.867667 15.185451 7.994223C15.185451 6.687519 14.827663 5.474151 14.205423 4.416343C14.205423 4.416343 14.205423 4.416343 14.20542
 3 4.416343"/>
+  	<path d="M1.791735 15.461103C1.402835 15.461103 1.045047 15.212207 0.889487 14.838863C0.733927 14.465519 0.827267 14.014395 1.107271 13.734387C1.107271 13.734387 13.458735 0.822907 13.458735 0.822907C13.847635 0.434007 14.454319 0.449563 14.827663 0.838467C15.201007 1.227367 15.216563 1.865163 14.843223 2.269619C14.843223 2.269619 2.491759 15.181099 2.491759 15.181099C2.289531 15.352215 2.040635 15.461107 1.791739 15.461107C1.791739 15.461107 1.791735 15.461103 1.791735 15.461103"/>
+  </g>
+</svg>
diff --git a/browser/components/torconnect/content/onion.svg b/browser/components/torconnect/content/onion.svg
new file mode 100644
index 000000000000..30cd52ba5c51
--- /dev/null
+++ b/browser/components/torconnect/content/onion.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M12.0246161,21.8174863 L12.0246161,20.3628098 C16.6324777,20.3495038 20.3634751,16.6108555 20.3634751,11.9996673 C20.3634751,7.38881189 16.6324777,3.65016355 12.0246161,3.63685757 L12.0246161,2.18218107 C17.4358264,2.1958197 21.8178189,6.58546322 21.8178189,11.9996673 C21.8178189,17.4142042 17.4358264,21.8041803 12.0246161,21.8174863 L12.0246161,21.8174863 Z M12.0246161,16.7259522 C14.623607,16.7123136 16.7272828,14.6023175 16.7272828,11.9996673 C16.7272828,9.39734991 14.623607,7.28735377 12.0246161,7.27371516 L12.0246161,5.81937131 C15.4272884,5.8326773 18.1819593,8.59400123 18.1819593,11.9996673 C18.1819593,15.4056661 15.4272884,18.1669901 12.0246161,18.1802961 L12.0246161,16.7259522 Z M12.0246161,9.45556355 C13.4187503,9.46886953 14.5454344,10.6022066 14.5454344,11.9996673 C14.5454344,13.3974608 13.4187503,14.5307978 12.0246161,14.5441038 L12.0246161,9.45556355 Z M0,11.9996673 C0,18.6273771 5.37229031,24 12,24 C18
 .6273771,24 24,18.6273771 24,11.9996673 C24,5.37229031 18.6273771,0 12,0 C5.37229031,0 0,5.37229031 0,11.9996673 Z"/>
+</svg>
\ No newline at end of file
diff --git a/browser/components/torconnect/content/torBootstrapUrlbar.js b/browser/components/torconnect/content/torBootstrapUrlbar.js
new file mode 100644
index 000000000000..7843b80be8b9
--- /dev/null
+++ b/browser/components/torconnect/content/torBootstrapUrlbar.js
@@ -0,0 +1,93 @@
+// Copyright (c) 2021, The Tor Project, Inc.
+
+"use strict";
+
+const { TorConnect, TorConnectTopics, TorConnectState } = ChromeUtils.import(
+  "resource:///modules/TorConnect.jsm"
+);
+const { TorStrings } = ChromeUtils.import(
+  "resource:///modules/TorStrings.jsm"
+);
+
+var TorBootstrapUrlbar = {
+  selectors: Object.freeze({
+    torConnect: {
+      box: "hbox#torconnect-box",
+      label: "label#torconnect-label",
+    },
+  }),
+
+  elements: null,
+
+  updateTorConnectBox: function(state) {
+    switch(state)
+    {
+      case TorConnectState.Initial:
+      case TorConnectState.Configuring:
+      case TorConnectState.AutoConfiguring:
+      case TorConnectState.Error:
+      case TorConnectState.FatalError: {
+        this.elements.torConnectBox.removeAttribute("hidden");
+        this.elements.torConnectLabel.textContent =
+          TorStrings.torConnect.torNotConnectedConcise;
+        this.elements.inputContainer.setAttribute("torconnect", "offline");
+        break;
+      }
+      case TorConnectState.Bootstrapping: {
+        this.elements.torConnectBox.removeAttribute("hidden");
+        this.elements.torConnectLabel.textContent =
+          TorStrings.torConnect.torConnectingConcise;
+        this.elements.inputContainer.setAttribute("torconnect", "connecting");
+        break;
+      }
+      case TorConnectState.Bootstrapped: {
+        this.elements.torConnectBox.removeAttribute("hidden");
+        this.elements.torConnectLabel.textContent =
+          TorStrings.torConnect.torConnectedConcise;
+        this.elements.inputContainer.setAttribute("torconnect", "connected");
+        // hide torconnect box after 5 seconds
+        setTimeout(() => {
+          this.elements.torConnectBox.setAttribute("hidden", "true");
+        }, 5000);
+        break;
+      }
+      case TorConnectState.Disabled: {
+        this.elements.torConnectBox.setAttribute("hidden", "true");
+        break;
+      }
+      default:
+        break;
+    }
+  },
+
+  observe: function(aSubject, aTopic, aData) {
+    if (aTopic === TorConnectTopics.StateChange) {
+      const obj = aSubject?.wrappedJSObject;
+      this.updateTorConnectBox(obj?.state);
+    }
+  },
+
+  init: function() {
+    if (TorConnect.shouldShowTorConnect) {
+      // browser isn't populated until init
+      this.elements = Object.freeze({
+        torConnectBox: browser.ownerGlobal.document.querySelector(this.selectors.torConnect.box),
+        torConnectLabel: browser.ownerGlobal.document.querySelector(this.selectors.torConnect.label),
+        inputContainer: gURLBar._inputContainer,
+      })
+      this.elements.torConnectBox.addEventListener("click", () => {
+        window.openTrustedLinkIn("about:torconnect", "tab");
+      });
+      Services.obs.addObserver(this, TorConnectTopics.StateChange);
+      this.observing = true;
+      this.updateTorConnectBox(TorConnect.state);
+    }
+  },
+
+  uninit: function() {
+    if (this.observing) {
+      Services.obs.removeObserver(this, TorConnectTopics.StateChange);
+    }
+  },
+};
+
diff --git a/browser/components/torconnect/content/torconnect-urlbar.css b/browser/components/torconnect/content/torconnect-urlbar.css
new file mode 100644
index 000000000000..5aabcffedbd0
--- /dev/null
+++ b/browser/components/torconnect/content/torconnect-urlbar.css
@@ -0,0 +1,57 @@
+/*
+    ensure our torconnect button is always visible (same rule as for the bookmark button)
+*/
+hbox.urlbar-page-action#torconnect-box {
+    display: -moz-inline-box!important;
+    height: 28px;
+}
+
+label#torconnect-label {
+    line-height: 28px;
+    margin: 0;
+    opacity: 0.6;
+    padding: 0 0.5em;
+}
+
+/* set appropriate sizes for the non-standard ui densities */
+:root[uidensity=compact] hbox.urlbar-page-action#torconnect-box {
+    height: 24px;
+}
+:root[uidensity=compact] label#torconnect-label {
+    line-height: 24px;
+}
+
+
+:root[uidensity=touch] hbox.urlbar-page-action#torconnect-box {
+    height: 30px;
+}
+:root[uidensity=touch] label#torconnect-label {
+    line-height: 30px;
+}
+
+
+/* hide when hidden attribute is set */
+hbox.urlbar-page-action#torconnect-box[hidden="true"],
+/* hide when user is typing in URL bar */
+#urlbar[usertyping] > #urlbar-input-container > #page-action-buttons > #torconnect-box {
+    display: none!important;
+}
+
+/* hide urlbar's placeholder text when not connectd to tor */
+hbox#urlbar-input-container[torconnect="offline"] input#urlbar-input::placeholder,
+hbox#urlbar-input-container[torconnect="connecting"] input#urlbar-input::placeholder {
+    opacity: 0;
+}
+
+/* hide search suggestions when not connected to tor */
+hbox#urlbar-input-container[torconnect="offline"] + vbox.urlbarView,
+hbox#urlbar-input-container[torconnect="connecting"] + vbox.urlbarView {
+    display: none!important;
+}
+
+/* hide search icon when we are not connected to tor */
+hbox#urlbar-input-container[torconnect="offline"] > #identity-box[pageproxystate="invalid"] > #identity-icon,
+hbox#urlbar-input-container[torconnect="connecting"] > #identity-box[pageproxystate="invalid"] > #identity-icon
+{
+    display: none!important;
+}
diff --git a/browser/components/torconnect/content/torconnect-urlbar.inc.xhtml b/browser/components/torconnect/content/torconnect-urlbar.inc.xhtml
new file mode 100644
index 000000000000..60e985a72691
--- /dev/null
+++ b/browser/components/torconnect/content/torconnect-urlbar.inc.xhtml
@@ -0,0 +1,10 @@
+# Copyright (c) 2021, The Tor Project, Inc.
+
+<hbox id="torconnect-box"
+      class="urlbar-icon-wrapper urlbar-page-action"
+      role="status"
+      hidden="true">
+    <hbox id="torconnect-container">
+        <label id="torconnect-label"/>
+    </hbox>
+</hbox>
\ No newline at end of file
diff --git a/browser/components/torconnect/jar.mn b/browser/components/torconnect/jar.mn
new file mode 100644
index 000000000000..ed8a4de299b2
--- /dev/null
+++ b/browser/components/torconnect/jar.mn
@@ -0,0 +1,7 @@
+browser.jar:
+    content/browser/torconnect/torBootstrapUrlbar.js               (content/torBootstrapUrlbar.js)
+    content/browser/torconnect/aboutTorConnect.css                 (content/aboutTorConnect.css)
+*   content/browser/torconnect/aboutTorConnect.xhtml               (content/aboutTorConnect.xhtml)
+    content/browser/torconnect/aboutTorConnect.js                  (content/aboutTorConnect.js)
+    content/browser/torconnect/onion.svg                           (content/onion.svg)
+    content/browser/torconnect/onion-slash.svg                     (content/onion-slash.svg)
diff --git a/browser/components/torconnect/moz.build b/browser/components/torconnect/moz.build
new file mode 100644
index 000000000000..eb29c31a4243
--- /dev/null
+++ b/browser/components/torconnect/moz.build
@@ -0,0 +1,6 @@
+JAR_MANIFESTS += ['jar.mn']
+
+EXTRA_JS_MODULES += [
+    'TorConnectChild.jsm',
+    'TorConnectParent.jsm',
+]
diff --git a/browser/components/torpreferences/content/torPane.js b/browser/components/torpreferences/content/torPane.js
index 49054b5dac6a..59ecdec6d1d9 100644
--- a/browser/components/torpreferences/content/torPane.js
+++ b/browser/components/torpreferences/content/torPane.js
@@ -1,9 +1,15 @@
 "use strict";
 
+/* global Services */
+
 const { TorProtocolService } = ChromeUtils.import(
   "resource:///modules/TorProtocolService.jsm"
 );
 
+const { TorConnect } = ChromeUtils.import(
+  "resource:///modules/TorConnect.jsm"
+);
+
 const {
   TorBridgeSource,
   TorBridgeSettings,
@@ -51,6 +57,10 @@ const { parsePort, parseBridgeStrings, parsePortList } = ChromeUtils.import(
   "chrome://browser/content/torpreferences/parseFunctions.jsm"
 );
 
+const TorLauncherPrefs = {
+  quickstart: "extensions.torlauncher.quickstart",
+}
+
 /*
   Tor Pane
 
@@ -62,11 +72,21 @@ const gTorPane = (function() {
     category: {
       title: "label#torPreferences-labelCategory",
     },
+    messageBox: {
+      box: "div#torPreferences-connectMessageBox",
+      message: "td#torPreferences-connectMessageBox-message",
+      button: "button#torPreferences-connectMessageBox-button",
+    },
     torPreferences: {
       header: "h1#torPreferences-header",
       description: "span#torPreferences-description",
       learnMore: "label#torPreferences-learnMore",
     },
+    quickstart: {
+      header: "h2#torPreferences-quickstart-header",
+      description: "span#torPreferences-quickstart-description",
+      enableQuickstartCheckbox: "checkbox#torPreferences-quickstart-toggle",
+    },
     bridges: {
       header: "h2#torPreferences-bridges-header",
       description: "span#torPreferences-bridges-description",
@@ -112,6 +132,10 @@ const gTorPane = (function() {
 
   let retval = {
     // cached frequently accessed DOM elements
+    _messageBox: null,
+    _messageBoxMessage: null,
+    _messageBoxButton: null,
+    _enableQuickstartCheckbox: null,
     _useBridgeCheckbox: null,
     _bridgeSelectionRadiogroup: null,
     _builtinBridgeOption: null,
@@ -161,6 +185,43 @@ const gTorPane = (function() {
 
       let prefpane = document.getElementById("mainPrefPane");
 
+      // 'Connect to Tor' Message Bar
+
+      this._messageBox = prefpane.querySelector(selectors.messageBox.box);
+      this._messageBoxMessage = prefpane.querySelector(selectors.messageBox.message);
+      this._messageBoxButton = prefpane.querySelector(selectors.messageBox.button);
+      // wire up connect button
+      this._messageBoxButton.addEventListener("click", () => {
+        TorConnect.beginBootstrap();
+        let win = Services.wm.getMostRecentWindow("navigator:browser");
+        // switch to existing about:torconnect tab or create a new one
+        win.switchToTabHavingURI("about:torconnect", true);
+      });
+
+      let populateMessagebox = () => {
+        if (TorConnect.shouldShowTorConnect) {
+          // set messagebox style and text
+          if (TorProtocolService.torBootstrapErrorOccurred()) {
+            this._messageBox.className = "error";
+            this._messageBoxMessage.innerText = TorStrings.torConnect.tryAgainMessage;
+            this._messageBoxButton.innerText = TorStrings.torConnect.tryAgain;
+          } else {
+            this._messageBox.className = "warning";
+            this._messageBoxMessage.innerText = TorStrings.torConnect.connectMessage;
+            this._messageBoxButton.innerText = TorStrings.torConnect.torConnectButton;
+          }
+        } else {
+          this._messageBox.className = "hidden";
+          this._messageBoxMessage.innerText = "";
+          this._messageBoxButton.innerText = "";
+        }
+      }
+      populateMessagebox();
+      // update the messagebox whenever we come back to the page
+      window.addEventListener("focus", val => {
+        populateMessagebox();
+      });
+
       // Heading
       prefpane.querySelector(selectors.torPreferences.header).innerText =
         TorStrings.settings.torPreferencesHeading;
@@ -177,6 +238,26 @@ const gTorPane = (function() {
         );
       }
 
+      // Quickstart
+      prefpane.querySelector(selectors.quickstart.header).innerText =
+        TorStrings.settings.quickstartHeading;
+      prefpane.querySelector(selectors.quickstart.description).textContent =
+        TorStrings.settings.quickstartDescription;
+
+      this._enableQuickstartCheckbox = prefpane.querySelector(
+        selectors.quickstart.enableQuickstartCheckbox
+      );
+      this._enableQuickstartCheckbox.setAttribute(
+        "label",
+        TorStrings.settings.quickstartCheckbox
+      );
+      this._enableQuickstartCheckbox.addEventListener("command", e => {
+        const checked = this._enableQuickstartCheckbox.checked;
+        Services.prefs.setBoolPref(TorLauncherPrefs.quickstart, checked);
+      });
+      this._enableQuickstartCheckbox.checked = Services.prefs.getBoolPref(TorLauncherPrefs.quickstart);
+      Services.prefs.addObserver(TorLauncherPrefs.quickstart, this);
+
       // Bridge setup
       prefpane.querySelector(selectors.bridges.header).innerText =
         TorStrings.settings.bridgesHeading;
@@ -537,6 +618,15 @@ const gTorPane = (function() {
     // Callbacks
     //
 
+    // callback for when the quickstart pref changes
+    observe(subject, topic, data) {
+      if (topic != "nsPref:changed") return;
+      if (data === TorLauncherPrefs.quickstart) {
+        this._enableQuickstartCheckbox.checked =
+          Services.prefs.getBoolPref(TorLauncherPrefs.quickstart);
+      }
+    },
+
     // callback when using bridges toggled
     onToggleBridge(enabled) {
       this._useBridgeCheckbox.checked = enabled;
diff --git a/browser/components/torpreferences/content/torPane.xhtml b/browser/components/torpreferences/content/torPane.xhtml
index 3c966b2b3726..7c8071f2cf10 100644
--- a/browser/components/torpreferences/content/torPane.xhtml
+++ b/browser/components/torpreferences/content/torPane.xhtml
@@ -3,6 +3,29 @@
 <script type="application/javascript"
         src="chrome://browser/content/torpreferences/torPane.js"/>
 <html:template id="template-paneTor">
+
+<!-- Tor Connect Message Box -->
+<groupbox data-category="paneTor" hidden="true">
+  <html:div id="torPreferences-connectMessageBox"
+            class="subcategory"
+            data-category="paneTor"
+            hidden="true">
+    <html:table >
+      <html:tr>
+        <html:td>
+          <html:div id="torPreferences-connectMessageBox-icon"/>
+        </html:td>
+        <html:td id="torPreferences-connectMessageBox-message">
+        </html:td>
+        <html:td>
+          <html:button id="torPreferences-connectMessageBox-button">
+          </html:button>
+        </html:td>
+      </html:tr>
+    </html:table>
+  </html:div>
+</groupbox>
+
 <hbox id="torPreferencesCategory"
       class="subcategory"
       data-category="paneTor"
@@ -18,6 +41,17 @@
   </description>
 </groupbox>
 
+<!-- Quickstart -->
+<groupbox id="torPreferences-quickstart-group"
+          data-category="paneTor"
+          hidden="true">
+  <html:h2 id="torPreferences-quickstart-header"/>
+  <description flex="1">
+    <html:span id="torPreferences-quickstart-description"/>
+  </description>
+  <checkbox id="torPreferences-quickstart-toggle"/>
+</groupbox>
+
 <!-- Bridges -->
 <groupbox id="torPreferences-bridges-group"
           data-category="paneTor"
diff --git a/browser/components/torpreferences/content/torPreferences.css b/browser/components/torpreferences/content/torPreferences.css
index 4dac2c457823..47b8ff18e0af 100644
--- a/browser/components/torpreferences/content/torPreferences.css
+++ b/browser/components/torpreferences/content/torPreferences.css
@@ -1,7 +1,130 @@
+ at import url("chrome://branding/content/tor-styles.css");
+
 #category-tor > .category-icon {
   list-style-image: url("chrome://browser/content/torpreferences/torPreferencesIcon.svg");
 }
 
+/* Connect Message Box */
+
+#torPreferences-connectMessageBox {
+  display: block;
+  position: relative;
+
+  width: auto;
+  min-height: 32px;
+  border-radius: 4px;
+  padding: 4px;
+}
+
+#torPreferences-connectMessageBox.hidden {
+  display: none;
+}
+
+#torPreferences-connectMessageBox.error {
+  background-color: var(--red-60);
+  color: white;
+}
+
+#torPreferences-connectMessageBox.warning {
+  background-color: var(--purple-50);
+  color: white;
+}
+
+#torPreferences-connectMessageBox table {
+  border-collapse: collapse;
+  width: 100%;
+}
+
+#torPreferences-connectMessageBox td {
+  vertical-align: top;
+  padding: 0px;
+}
+
+#torPreferences-connectMessageBox td:first-child {
+  width: 24px;
+}
+
+#torPreferences-connectMessageBox-icon {
+  display: block;
+  width: 16px;
+  height: 16px;
+  padding: 4px;
+
+  mask-repeat: no-repeat !important;
+  mask-size: 16px !important;
+  mask-position: 4px 4px !important;
+}
+
+#torPreferences-connectMessageBox.error #torPreferences-connectMessageBox-icon
+{
+  mask: url("chrome://browser/skin/onion-slash.svg");
+  background-color: white;
+}
+
+#torPreferences-connectMessageBox.warning #torPreferences-connectMessageBox-icon
+{
+  mask: url("chrome://browser/skin/onion.svg");
+  background-color: white;
+}
+
+#torPreferences-connectMessageBox-message {
+  display: block;
+  line-height: 16px;
+  font-size: 13px;
+  margin-right: 8px;
+  padding-left: 4px!important;
+  padding-top: 4px!important;
+}
+
+#torPreferences-connectMessageBox-button {
+  display: block;
+  width: auto;
+  height: 24px;
+  line-height: 24px;
+  min-height: 24px;
+  max-height: 24px;
+  margin: 0px;
+
+  border-radius: 2px;
+  border: 0;
+  padding-left: 8px;
+  padding-right: 8px;
+  margin-left: auto;
+  margin-right: 0px;
+
+  font-size: 11px;
+  font-weight: 400;
+  white-space: nowrap;
+}
+
+#torPreferences-connectMessageBox.error #torPreferences-connectMessageBox-button {
+  background-color: var(--red-70);
+}
+
+#torPreferences-connectMessageBox.error #torPreferences-connectMessageBox-button:hover {
+  background-color: var(--red-80);
+}
+
+#torPreferences-connectMessageBox.error #torPreferences-connectMessageBox-button:active {
+  background-color: var(--red-90);
+}
+
+#torPreferences-connectMessageBox.warning #torPreferences-connectMessageBox-button {
+  background-color: var(--purple-70);
+}
+
+#torPreferences-connectMessageBox.warning #torPreferences-connectMessageBox-button:hover {
+  background-color: var(--purple-80);
+  color: white!important;
+}
+
+#torPreferences-connectMessageBox.warning #torPreferences-connectMessageBox-button:active {
+  background-color: var(--purple-90);
+  color: white!important;
+}
+
+/* Advanced Settings */
+
 #torPreferences-advanced-grid {
   display: grid;
   grid-template-columns: auto 1fr;
diff --git a/browser/components/urlbar/UrlbarInput.jsm b/browser/components/urlbar/UrlbarInput.jsm
index 13b1279105f2..60b5b9163d67 100644
--- a/browser/components/urlbar/UrlbarInput.jsm
+++ b/browser/components/urlbar/UrlbarInput.jsm
@@ -10,6 +10,33 @@ const { XPCOMUtils } = ChromeUtils.import(
   "resource://gre/modules/XPCOMUtils.jsm"
 );
 
+const { TorConnect } = ChromeUtils.import(
+  "resource:///modules/TorConnect.jsm"
+);
+
+// in certain scenarios we want user input uris to open in a new tab if they do so from the
+// about:torconnect tab 
+function maybeUpdateOpenLocationForTorConnect(openUILinkWhere, currentURI, destinationURI) {
+  try {
+    // only open in new tab if:
+    if (// user is navigating away from about:torconnect
+        currentURI === "about:torconnect" &&
+        // we are trying to open in same tab
+        openUILinkWhere === "current" &&
+        // only if user still has not bootstrapped
+        TorConnect.shouldShowTorConnect &&
+        // and user is not just navigating to about:torconnect
+        destinationURI !== "about:torconnect") {
+      return "tab";
+    }
+  } catch (e) {
+    // swallow exception and fall through returning original so we don't accidentally break
+    // anything if an exception is thrown
+  }
+
+  return openUILinkWhere;
+};
+
 XPCOMUtils.defineLazyModuleGetters(this, {
   AppConstants: "resource://gre/modules/AppConstants.jsm",
   BrowserUtils: "resource://gre/modules/BrowserUtils.jsm",
@@ -1832,6 +1859,10 @@ class UrlbarInput {
     // area when the current tab is re-selected.
     browser.focus();
 
+    openUILinkWhere = maybeUpdateOpenLocationForTorConnect(
+                        openUILinkWhere,
+                        this.window.gBrowser.currentURI.asciiSpec,
+                        url);
     if (openUILinkWhere != "current") {
       this.handleRevert();
     }
diff --git a/browser/modules/TorConnect.jsm b/browser/modules/TorConnect.jsm
new file mode 100644
index 000000000000..bd5c998a6063
--- /dev/null
+++ b/browser/modules/TorConnect.jsm
@@ -0,0 +1,499 @@
+"use strict";
+
+var EXPORTED_SYMBOLS = ["TorConnect", "TorConnectTopics", "TorConnectState"];
+
+const { Services } = ChromeUtils.import(
+    "resource://gre/modules/Services.jsm"
+);
+
+const { BrowserWindowTracker } = ChromeUtils.import(
+    "resource:///modules/BrowserWindowTracker.jsm"
+);
+
+const { TorProtocolService, TorProcessStatus } = ChromeUtils.import(
+    "resource:///modules/TorProtocolService.jsm"
+);
+
+const { TorLauncherUtil } = ChromeUtils.import(
+    "resource://torlauncher/modules/tl-util.jsm"
+);
+
+/* Browser observer topis */
+const BrowserTopics = Object.freeze({
+    ProfileAfterChange: "profile-after-change",
+});
+
+/* tor-launcher observer topics */
+const TorTopics = Object.freeze({
+    ProcessIsReady: "TorProcessIsReady",
+    BootstrapStatus: "TorBootstrapStatus",
+    BootstrapError: "TorBootstrapError",
+    ProcessExited: "TorProcessExited",
+    LogHasWarnOrErr: "TorLogHasWarnOrErr",
+});
+
+/* Relevant prefs used by tor-launcher */
+const TorLauncherPrefs = Object.freeze({
+  quickstart: "extensions.torlauncher.quickstart",
+  prompt_at_startup: "extensions.torlauncher.prompt_at_startup",
+});
+
+const TorConnectState = Object.freeze({
+    /* Our initial state */
+    Initial: "Initial",
+    /* In-between initial boot and bootstrapping, users can change tor network settings during this state */
+    Configuring: "Configuring",
+    /* Geo-location and setting bridges/etc */
+    AutoConfiguring: "AutoConfiguring",
+    /* Tor is bootstrapping */
+    Bootstrapping: "Bootstrapping",
+    /* Passthrough state back to Configuring or Fatal */
+    Error: "Error",
+    /* An unrecoverable error */
+    FatalError: "FatalError",
+    /* Final state, after successful bootstrap */
+    Bootstrapped: "Bootstrapped",
+    /* If we are using System tor or the legacy Tor-Launcher */
+    Disabled: "Disabled",
+});
+
+/*
+
+                                               TorConnect State Transitions
+
+                                              ┌──────────────────────┐
+                                              │       Disabled       │
+                                              └──────────────────────┘
+                                                â–²
+                                                │ legacyOrSystemTor()
+                                                │
+                                              ┌──────────────────────┐
+                      ┌────────────────────── │       Initial        │ ───────────────────────────┐
+                      │                       └──────────────────────┘                            │
+                      │                         │                                                 │
+                      │                         │ beginBootstrap()                                │
+                      │                         ▼                                                 │
+┌────────────────┐    │  bootstrapComplete()  ┌────────────────────────────────────────────────┐  │  beginBootstrap()
+│  Bootstrapped  │ ◀──┼────────────────────── │                 Bootstrapping                  │ ◀┼─────────────────┐
+└────────────────┘    │                       └────────────────────────────────────────────────┘  │                 │
+                      │                         │                       ▲                    │    │                 │
+                      │                         │ cancelBootstrap()     │ beginBootstrap()   └────┼─────────────┐   │
+                      │                         ▼                       │                         │             │   │
+                      │   beginConfigure()    ┌────────────────────────────────────────────────┐  │             │   │
+                      └─────────────────────▶ │                                                │  │             │   │
+                                              │                                                │  │             │   │
+                       beginConfigure()       │                                                │  │             │   │
+                 ┌──────────────────────────▶ │                  Configuring                   │  │             │   │
+                 │                            │                                                │  │             │   │
+                 │                            │                                                │  │             │   │
+                 │    ┌─────────────────────▶ │                                                │  │             │   │
+                 │    │                       └────────────────────────────────────────────────┘  │             │   │
+                 │    │                         │                       │                         │             │   │
+                 │    │ cancelAutoconfigure()   │ autoConfigure()       │                    ┌────┼─────────────┼───┘
+                 │    │                         ▼                       │                    │    │             │
+                 │    │                       ┌──────────────────────┐  │                    │    │             │
+                 │    └────────────────────── │   AutoConfiguring    │ ─┼────────────────────┘    │             │
+                 │                            └──────────────────────┘  │                         │             │
+                 │                              │                       │                         │ onError()   │
+                 │                              │ onError()             │ onError()               │             │
+                 │                              ▼                       ▼                         │             │
+                 │                            ┌────────────────────────────────────────────────┐  │             │
+                 └─────────────────────────── │                     Error                      │ ◀┘             │
+                                              └────────────────────────────────────────────────┘                │
+                                                │                                            ▲   onError()      │
+                                                │ onFatalError()                             └──────────────────┘
+                                                â–¼
+                                              ┌──────────────────────┐
+                                              │      FatalError      │
+                                              └──────────────────────┘
+
+*/
+
+
+/* Maps allowed state transitions
+   TorConnectStateTransitions[state] maps to an array of allowed states to transition to
+*/
+const TorConnectStateTransitions =
+    Object.freeze(new Map([
+        [TorConnectState.Initial,
+            [TorConnectState.Disabled,
+             TorConnectState.Bootstrapping,
+             TorConnectState.Configuring,
+             TorConnectState.Error]],
+        [TorConnectState.Configuring,
+            [TorConnectState.AutoConfiguring,
+             TorConnectState.Bootstrapping,
+             TorConnectState.Error]],
+        [TorConnectState.AutoConfiguring,
+            [TorConnectState.Configuring,
+             TorConnectState.Bootstrapping,
+             TorConnectState.Error]],
+        [TorConnectState.Bootstrapping,
+            [TorConnectState.Configuring,
+             TorConnectState.Bootstrapped,
+             TorConnectState.Error]],
+        [TorConnectState.Error,
+            [TorConnectState.Configuring,
+             TorConnectState.FatalError]],
+        // terminal states
+        [TorConnectState.FatalError, []],
+        [TorConnectState.Bootstrapped, []],
+        [TorConnectState.Disabled, []],
+    ]));
+
+/* Topics Notified by the TorConnect module */
+const TorConnectTopics = Object.freeze({
+    StateChange: "torconnect:state-change",
+    BootstrapProgress: "torconnect:bootstrap-progress",
+    BootstrapComplete: "torconnect:bootstrap-complete",
+    BootstrapError: "torconnect:bootstrap-error",
+    FatalError: "torconnect:fatal-error",
+});
+
+const TorConnect = (() => {
+    let retval = {
+
+        _state: TorConnectState.Initial,
+        _bootstrapProgress: 0,
+        _bootstrapStatus: null,
+        _errorMessage: null,
+        _errorDetails: null,
+        _logHasWarningOrError: false,
+
+        /* These functions are called after transitioning to a new state */
+        _transitionCallbacks: Object.freeze(new Map([
+            /* Initial is never transitioned to */
+            [TorConnectState.Initial, null],
+            /* Configuring */
+            [TorConnectState.Configuring, (self, prevState) => {
+                // TODO move this to the transition function
+                if (prevState === TorConnectState.Bootstrapping) {
+                    TorProtocolService.torStopBootstrap();
+                }
+            }],
+            /* AutoConfiguring */
+            [TorConnectState.AutoConfiguring, (self, prevState) => {
+
+            }],
+            /* Bootstrapping */
+            [TorConnectState.Bootstrapping, (self, prevState) => {
+                let error = TorProtocolService.connect();
+                if (error) {
+                    self.onError(error.message, error.details);
+                } else {
+                    self._errorMessage = self._errorDetails = null;
+                }
+            }],
+            /* Bootstrapped */
+            [TorConnectState.Bootstrapped, (self,prevState) => {
+                // notify observers of bootstrap completion
+                Services.obs.notifyObservers(null, TorConnectTopics.BootstrapComplete);
+            }],
+            /* Error */
+            [TorConnectState.Error, (self, prevState, errorMessage, errorDetails, fatal) => {
+                self._errorMessage = errorMessage;
+                self._errorDetails = errorDetails;
+
+                Services.obs.notifyObservers({message: errorMessage, details: errorDetails}, TorConnectTopics.BootstrapError);
+                if (fatal) {
+                    self.onFatalError();
+                } else {
+                    self.beginConfigure();
+                }
+            }],
+            /* FatalError */
+            [TorConnectState.FatalError, (self, prevState) => {
+                Services.obs.notifyObservers(null, TorConnectTopics.FatalError);
+            }],
+            /* Disabled */
+            [TorConnectState.Disabled, (self, prevState) => {
+
+            }],
+        ])),
+
+        _changeState: function(newState, ...args) {
+            const prevState = this._state;
+
+            // ensure this is a valid state transition
+            if (!TorConnectStateTransitions.get(prevState)?.includes(newState)) {
+                throw Error(`TorConnect: Attempted invalid state transition from ${prevState} to ${newState}`);
+            }
+
+            console.log(`TorConnect: transitioning state from ${prevState} to ${newState}`);
+
+            // set our new state first so that state transitions can themselves trigger
+            // a state transition
+            this._state = newState;
+
+            // call our transition function and forward any args
+            this._transitionCallbacks.get(newState)(this, prevState, ...args);
+
+            Services.obs.notifyObservers({state: newState}, TorConnectTopics.StateChange);
+        },
+
+        // init should be called on app-startup in MainProcessingSingleton.jsm
+        init : function() {
+            console.log("TorConnect: Init");
+
+            // delay remaining init until after profile-after-change
+            Services.obs.addObserver(this, BrowserTopics.ProfileAfterChange);
+        },
+
+        observe: function(subject, topic, data) {
+            console.log(`TorConnect: observed ${topic}`);
+
+            switch(topic) {
+
+            /* Determine which state to move to from Initial */
+            case BrowserTopics.ProfileAfterChange: {
+                if (TorLauncherUtil.useLegacyLauncher || !TorProtocolService.ownsTorDaemon) {
+                    // Disabled
+                    this.legacyOrSystemTor();
+                } else {
+                    // register the Tor topics we always care about
+                    for (const topicKey in TorTopics) {
+                        const topic = TorTopics[topicKey];
+                        Services.obs.addObserver(this, topic);
+                        console.log(`TorConnect: observing topic '${topic}'`);
+                    }
+
+                    if (TorProtocolService.torProcessStatus == TorProcessStatus.Running) {
+                        if (this.shouldQuickStart) {
+                            // Quickstart
+                            this.beginBootstrap();
+                        } else {
+                            // Configuring
+                            this.beginConfigure();
+                        }
+                    }
+                }
+
+                Services.obs.removeObserver(this, topic);
+                break;
+            }
+            /* Transition out of Initial if Tor daemon wasn't running yet in BrowserTopics.ProfileAfterChange */
+            case TorTopics.ProcessIsReady: {
+                if (this.state === TorConnectState.Initial)
+                {
+                    if (this.shouldQuickStart) {
+                        // Quickstart
+                        this.beginBootstrap();
+                    } else {
+                        // Configuring
+                        this.beginConfigure();
+                    }
+                }
+                break;
+            }
+            /* Updates our bootstrap status */
+            case TorTopics.BootstrapStatus: {
+                if (this._state != TorConnectState.Bootstrapping) {
+                    console.log(`TorConnect: observed ${TorTopics.BootstrapStatus} topic while in state TorConnectState.${this._state}`);
+                    break;
+                }
+
+                const obj = subject?.wrappedJSObject;
+                if (obj) {
+                    this._bootstrapProgress= obj.PROGRESS;
+                    this._bootstrapStatus = TorLauncherUtil.getLocalizedBootstrapStatus(obj, "TAG");
+
+                    console.log(`TorConnect: Bootstrapping ${this._bootstrapProgress}% complete (${this._bootstrapStatus})`);
+                    Services.obs.notifyObservers({
+                        progress: this._bootstrapProgress,
+                        status: this._bootstrapStatus,
+                        hasWarnings: this._logHasWarningOrError
+                    }, TorConnectTopics.BootstrapProgress);
+
+                    if (this._bootstrapProgress === 100) {
+                        this.bootstrapComplete();
+                    }
+                }
+                break;
+            }
+            /* Handle bootstrap error*/
+            case TorTopics.BootstrapError: {
+                const obj = subject?.wrappedJSObject;
+                TorProtocolService.torStopBootstrap();
+                this.onError(obj.message, obj.details);
+                break;
+            }
+            case TorTopics.LogHasWarnOrErr: {
+                this._logHasWarningOrError = true;
+                break;
+            }
+            default:
+                // ignore
+                break;
+            }
+        },
+
+        /*
+        Various getters
+        */
+
+        get shouldShowTorConnect() {
+                   // TorBrowser must control the daemon
+            return (TorProtocolService.ownsTorDaemon &&
+                   // and we're not using the legacy launcher
+                   !TorLauncherUtil.useLegacyLauncher &&
+                   // legacy checks, TODO: maybe this should be in terms of our own state?
+                   (TorProtocolService.isNetworkDisabled() || !TorProtocolService.isBootstrapDone()));
+        },
+
+        get shouldQuickStart() {
+                   // quickstart must be enabled
+            return Services.prefs.getBoolPref(TorLauncherPrefs.quickstart, false) &&
+                   // and the previous bootstrap attempt must have succeeded
+                   !Services.prefs.getBoolPref(TorLauncherPrefs.prompt_at_startup, true);
+        },
+
+        get state() {
+            return this._state;
+        },
+
+        get bootstrapProgress() {
+            return this._bootstrapProgress;
+        },
+
+        get bootstrapStatus() {
+            return this._bootstrapStatus;
+        },
+
+        get errorMessage() {
+            return this._errorMessage;
+        },
+
+        get errorDetails() {
+            return this._errorDetails;
+        },
+
+        get logHasWarningOrError() {
+            return this._logHasWarningOrError;
+        },
+
+        /*
+        These functions tell TorConnect to transition states
+        */
+
+        legacyOrSystemTor: function() {
+            console.log("TorConnect: legacyOrSystemTor()");
+            this._changeState(TorConnectState.Disabled);
+        },
+
+        beginBootstrap: function() {
+            console.log("TorConnect: beginBootstrap()");
+            this._changeState(TorConnectState.Bootstrapping);
+        },
+
+        beginConfigure: function() {
+            console.log("TorConnect: beginConfigure()");
+            this._changeState(TorConnectState.Configuring);
+        },
+
+        autoConfigure: function() {
+            console.log("TorConnect: autoConfigure()");
+            // TODO: implement
+            throw Error("TorConnect: not implemented");
+        },
+
+        cancelAutoConfigure: function() {
+            console.log("TorConnect: cancelAutoConfigure()");
+            // TODO: implement
+            throw Error("TorConnect: not implemented");
+        },
+
+        cancelBootstrap: function() {
+            console.log("TorConnect: cancelBootstrap()");
+            this._changeState(TorConnectState.Configuring);
+        },
+
+        bootstrapComplete: function() {
+            console.log("TorConnect: bootstrapComplete()");
+            this._changeState(TorConnectState.Bootstrapped);
+        },
+
+        onError: function(message, details) {
+            console.log("TorConnect: onError()");
+            this._changeState(TorConnectState.Error, message, details, false);
+        },
+
+        onFatalError: function() {
+            console.log("TorConnect: onFatalError()");
+            // TODO: implement
+            throw Error("TorConnect: not implemented");
+        },
+
+        /*
+        Further external commands and helper methods
+        */
+        openTorPreferences: function() {
+            const win = BrowserWindowTracker.getTopWindow()
+            win.openTrustedLinkIn("about:preferences#tor", "tab");
+        },
+
+        copyTorLogs: function() {
+            // Copy tor log messages to the system clipboard.
+            const chSvc = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(
+              Ci.nsIClipboardHelper
+            );
+            const countObj = { value: 0 };
+            chSvc.copyString(TorProtocolService.getLog(countObj));
+            const count = countObj.value;
+            return TorLauncherUtil.getFormattedLocalizedString(
+              "copiedNLogMessagesShort",
+              [count],
+              1
+            );
+        },
+
+        // called from browser.js on browser startup, passed in either the user's homepage(s)
+        // or uris passed via command-line; we want to replace them with about:torconnect uris
+        // which redirect after bootstrapping
+        getURIsToLoad: function(uriVariant) {
+            // convert the object we get from browser.js
+            let uriStrings = ((v) => {
+                // an interop array
+                if (v instanceof Ci.nsIArray) {
+                    // Transform the nsIArray of nsISupportsString's into a JS Array of
+                    // JS strings.
+                    return Array.from(
+                      v.enumerate(Ci.nsISupportsString),
+                      supportStr => supportStr.data
+                    );
+                // an interop string
+                } else if (v instanceof Ci.nsISupportsString) {
+                    return [v.data];
+                // a js string
+                } else if (typeof v === "string") {
+                    return v.split("|");
+                // a js array of js strings
+                } else if (Array.isArray(v) &&
+                           v.reduce((allStrings, entry) => {return allStrings && (typeof entry === "string");}, true)) {
+                    return v;
+                }
+                // about:tor as safe fallback
+                console.log(`TorConnect: getURIsToLoad() received unknown variant '${JSON.stringify(v)}'`);
+                return ["about:tor"];
+            })(uriVariant);
+
+            // will attempt to convert user-supplied string to a uri, fallback to about:tor if cannot convert
+            // to valid uri object
+            let uriStringToUri = (uriString) => {
+                let uri = Services.uriFixup.createFixupURI(uriString, 0);
+                return uri ? uri : Services.io.newURI("about:tor");
+            };
+            let uris = uriStrings.map(uriStringToUri);
+
+            // assume we have a valid uri and generate an about:torconnect redirect uri
+            let uriToRedirectUri = (uri) => {
+                return`about:torconnect?redirect=${encodeURIComponent(uri.spec)}`;
+            };
+            let redirectUris = uris.map(uriToRedirectUri);
+
+            console.log(`TorConnect: will load after bootstrap => [${uris.map((uri) => {return uri.spec;}).join(", ")}]`);
+            return redirectUris;
+        },
+    };
+    retval.init();
+    return retval;
+})(); /* TorConnect */
diff --git a/browser/modules/TorProcessService.jsm b/browser/modules/TorProcessService.jsm
new file mode 100644
index 000000000000..201e331b2806
--- /dev/null
+++ b/browser/modules/TorProcessService.jsm
@@ -0,0 +1,12 @@
+"use strict";
+
+var EXPORTED_SYMBOLS = ["TorProcessService"];
+
+var TorProcessService = {
+  get isBootstrapDone() {
+    const svc = Cc["@torproject.org/torlauncher-process-service;1"].getService(
+      Ci.nsISupports
+    ).wrappedJSObject;
+    return svc.mIsBootstrapDone;
+  },
+};
diff --git a/browser/modules/TorProtocolService.jsm b/browser/modules/TorProtocolService.jsm
index b4e6ed9a3253..e6c78b9a0eb1 100644
--- a/browser/modules/TorProtocolService.jsm
+++ b/browser/modules/TorProtocolService.jsm
@@ -1,21 +1,60 @@
+// Copyright (c) 2021, The Tor Project, Inc.
+
 "use strict";
 
-var EXPORTED_SYMBOLS = ["TorProtocolService"];
+var EXPORTED_SYMBOLS = ["TorProtocolService", "TorProcessStatus"];
 
-const { TorLauncherUtil } = ChromeUtils.import(
-  "resource://torlauncher/modules/tl-util.jsm"
+const { Services } = ChromeUtils.import(
+    "resource://gre/modules/Services.jsm"
 );
 
+// see tl-process.js
+const TorProcessStatus = Object.freeze({
+  Unknown: 0,
+  Starting: 1,
+  Running: 2,
+  Exited: 3,
+});
+
+/* Browser observer topis */
+const BrowserTopics = Object.freeze({
+    ProfileAfterChange: "profile-after-change",
+});
+
 var TorProtocolService = {
-  _tlps: Cc["@torproject.org/torlauncher-protocol-service;1"].getService(
-    Ci.nsISupports
-  ).wrappedJSObject,
+  _TorLauncherUtil: function() {
+      let { TorLauncherUtil } = ChromeUtils.import(
+        "resource://torlauncher/modules/tl-util.jsm"
+      );
+      return TorLauncherUtil;
+    }(),
+  _TorLauncherProtocolService: null,
+  _TorProcessService: null,
 
   // maintain a map of tor settings set by Tor Browser so that we don't
   // repeatedly set the same key/values over and over
   // this map contains string keys to primitive or array values
   _settingsCache: new Map(),
 
+  init() {
+    Services.obs.addObserver(this, BrowserTopics.ProfileAfterChange);
+  },
+
+  observe(subject, topic, data) {
+    if (topic === BrowserTopics.ProfileAfterChange) {
+      // we have to delay init'ing this or else the crypto service inits too early without a profile
+      // which breaks the password manager
+      this._TorLauncherProtocolService = Cc["@torproject.org/torlauncher-protocol-service;1"].getService(
+        Ci.nsISupports
+      ).wrappedJSObject;
+      this._TorProcessService = Cc["@torproject.org/torlauncher-process-service;1"].getService(
+        Ci.nsISupports
+      ).wrappedJSObject,
+
+      Services.obs.removeObserver(this, topic);
+    }
+  },
+
   _typeof(aValue) {
     switch (typeof aValue) {
       case "boolean":
@@ -118,7 +157,7 @@ var TorProtocolService = {
       }
 
       let errorObject = {};
-      if (!this._tlps.TorSetConfWithReply(settingsObject, errorObject)) {
+      if (!this._TorLauncherProtocolService.TorSetConfWithReply(settingsObject, errorObject)) {
         throw new Error(errorObject.details);
       }
 
@@ -131,8 +170,8 @@ var TorProtocolService = {
 
   _readSetting(aSetting) {
     this._assertValidSettingKey(aSetting);
-    let reply = this._tlps.TorGetConf(aSetting);
-    if (this._tlps.TorCommandSucceeded(reply)) {
+    let reply = this._TorLauncherProtocolService.TorGetConf(aSetting);
+    if (this._TorLauncherProtocolService.TorCommandSucceeded(reply)) {
       return reply.lineArray;
     }
     throw new Error(reply.lineArray.join("\n"));
@@ -196,17 +235,129 @@ var TorProtocolService = {
 
   // writes current tor settings to disk
   flushSettings() {
-    this._tlps.TorSendCommand("SAVECONF");
+    this.sendCommand("SAVECONF");
   },
 
-  getLog() {
-    let countObj = { value: 0 };
-    let torLog = this._tlps.TorGetLog(countObj);
+  getLog(countObj) {
+    countObj = countObj || { value: 0 };
+    let torLog = this._TorLauncherProtocolService.TorGetLog(countObj);
     return torLog;
   },
 
   // true if we launched and control tor, false if using system tor
   get ownsTorDaemon() {
-    return TorLauncherUtil.shouldStartAndOwnTor;
+    return this._TorLauncherUtil.shouldStartAndOwnTor;
+  },
+
+  // Assumes `ownsTorDaemon` is true
+  isNetworkDisabled() {
+    const reply = TorProtocolService._TorLauncherProtocolService.TorGetConfBool(
+      "DisableNetwork",
+      true
+    );
+    if (TorProtocolService._TorLauncherProtocolService.TorCommandSucceeded(reply)) {
+      return reply.retVal;
+    }
+    return true;
+  },
+
+  enableNetwork() {
+    let settings = {};
+    settings.DisableNetwork = false;
+    let errorObject = {};
+    if (!this._TorLauncherProtocolService.TorSetConfWithReply(settings, errorObject)) {
+      throw new Error(errorObject.details);
+    }
+  },
+
+  sendCommand(cmd) {
+    return this._TorLauncherProtocolService.TorSendCommand(cmd);
+  },
+
+  retrieveBootstrapStatus() {
+    return this._TorLauncherProtocolService.TorRetrieveBootstrapStatus();
+  },
+
+  _GetSaveSettingsErrorMessage(aDetails) {
+    try {
+      return this._TorLauncherUtil.getSaveSettingsErrorMessage(aDetails);
+    } catch (e) {
+      console.log("GetSaveSettingsErrorMessage error", e);
+      return "Unexpected Error";
+    }
+  },
+
+  setConfWithReply(settings) {
+    let result = false;
+    const error = {};
+    try {
+      result = this._TorLauncherProtocolService.TorSetConfWithReply(settings, error);
+    } catch (e) {
+      console.log("TorSetConfWithReply error", e);
+      error.details = this._GetSaveSettingsErrorMessage(e.message);
+    }
+    return { result, error };
+  },
+
+  isBootstrapDone() {
+    return this._TorProcessService.mIsBootstrapDone;
+  },
+
+  clearBootstrapError() {
+    return this._TorProcessService.TorClearBootstrapError();
+  },
+
+  torBootstrapErrorOccurred() {
+    return this._TorProcessService.TorBootstrapErrorOccurred;
+  },
+
+  // Resolves to null if ok, or an error otherwise
+  connect() {
+    const kTorConfKeyDisableNetwork = "DisableNetwork";
+    const settings = {};
+    settings[kTorConfKeyDisableNetwork] = false;
+    const { result, error } = this.setConfWithReply(settings);
+    if (!result) {
+      return error;
+    }
+    try {
+      this.sendCommand("SAVECONF");
+      this.clearBootstrapError();
+      this.retrieveBootstrapStatus();
+    } catch (e) {
+      return error;
+    }
+    return null;
+  },
+
+  torLogHasWarnOrErr() {
+    return this._TorLauncherProtocolService.TorLogHasWarnOrErr;
+  },
+
+  torStopBootstrap() {
+    // Tell tor to disable use of the network; this should stop the bootstrap
+    // process.
+    const kErrorPrefix = "Setting DisableNetwork=1 failed: ";
+    try {
+      let settings = {};
+      settings.DisableNetwork = true;
+      const { result, error } = this.setConfWithReply(settings);
+      if (!result) {
+        console.log(
+          `Error stopping bootstrap ${kErrorPrefix} ${error.details}`
+        );
+      }
+    } catch (e) {
+      console.log(`Error stopping bootstrap ${kErrorPrefix} ${e}`);
+    }
+    this.retrieveBootstrapStatus();
+  },
+
+  get torProcessStatus() {
+    if (this._TorProcessService) {
+      return this._TorProcessService.TorProcessStatus;
+    }
+    return TorProcessStatus.Unknown;
   },
 };
+TorProtocolService.init();
\ No newline at end of file
diff --git a/browser/modules/TorStrings.jsm b/browser/modules/TorStrings.jsm
index 1e08b168e4af..c0691ff078ce 100644
--- a/browser/modules/TorStrings.jsm
+++ b/browser/modules/TorStrings.jsm
@@ -257,6 +257,9 @@ var TorStrings = {
         "Tor Browser routes your traffic over the Tor Network, run by thousands of volunteers around the world."
       ),
       learnMore: getString("torPreferences.learnMore", "Learn More"),
+      quickstartHeading: getString("torPreferences.quickstart", "Quickstart"),
+      quickstartDescription: getString("torPreferences.quickstartDescription", "Quickstart allows Tor Browser to connect automatically."),
+      quickstartCheckbox : getString("torPreferences.quickstartCheckbox", "Always connect automatically"),
       bridgesHeading: getString("torPreferences.bridges", "Bridges"),
       bridgesDescription: getString(
         "torPreferences.bridgesDescription",
@@ -364,6 +367,83 @@ var TorStrings = {
     return retval;
   })() /* Tor Network Settings Strings */,
 
+  torConnect: (() => {
+    const tsbNetwork = new TorDTDStringBundle(
+      ["chrome://torlauncher/locale/network-settings.dtd"],
+      ""
+    );
+    const tsbLauncher = new TorPropertyStringBundle(
+      "chrome://torlauncher/locale/torlauncher.properties",
+      "torlauncher."
+    );
+    const tsbCommon = new TorPropertyStringBundle(
+      "chrome://global/locale/commonDialogs.properties",
+      ""
+    );
+
+    const getStringNet = tsbNetwork.getString.bind(tsbNetwork);
+    const getStringLauncher = tsbLauncher.getString.bind(tsbLauncher);
+    const getStringCommon = tsbCommon.getString.bind(tsbCommon);
+
+    return {
+      torConnect: getStringNet(
+        "torsettings.wizard.title.default",
+        "Connect to Tor"
+      ),
+
+      torConnecting: getStringNet(
+        "torsettings.wizard.title.connecting",
+        "Establishing a Connection"
+      ),
+
+      torNotConnectedConcise: getStringNet(
+        "torConnect.notConnectedConcise",
+        "Not Connected"
+      ),
+
+      torConnectingConcise: getStringNet(
+        "torConnect.connectingConcise",
+        "Connecting…"
+      ),
+
+      torBootstrapFailed: getStringLauncher(
+        "tor_bootstrap_failed",
+        "Tor failed to establish a Tor network connection."
+      ),
+
+      torConfigure: getStringNet(
+        "torsettings.wizard.title.configure",
+        "Tor Network Settings"
+      ),
+
+      copyLog: getStringNet(
+        "torConnect.copyLog",
+        "Copy Tor Logs"
+      ),
+
+      torConnectButton: getStringNet("torSettings.connect", "Connect"),
+
+      cancel: getStringCommon("Cancel", "Cancel"),
+
+      torConnected: getStringLauncher(
+        "torlauncher.bootstrapStatus.done",
+        "Connected to the Tor network"
+      ),
+
+      torConnectedConcise: getStringLauncher(
+        "torConnect.connectedConcise",
+        "Connected"
+      ),
+
+      tryAgain: getStringNet("torConnect.tryAgain", "Try connecting again"),
+      offline: getStringNet("torConnect.offline", "Offline"),
+
+      // tor connect strings for message box in about:preferences#tor
+      connectMessage: getStringNet("torConnect.connectMessage", "Changes to Tor Settings will not take effect until you connect to the Tor Network"),
+      tryAgainMessage: getStringNet("torConnect.tryAgainMessage", "Tor Browser has failed to establish a connection to the Tor Network"),
+    };
+  })(),
+
   /*
     Tor Onion Services Strings, e.g., for the authentication prompt.
   */
diff --git a/browser/modules/moz.build b/browser/modules/moz.build
index 5fb78d1c07a8..7f091e0e7711 100644
--- a/browser/modules/moz.build
+++ b/browser/modules/moz.build
@@ -155,6 +155,8 @@ EXTRA_JS_MODULES += [
     'TabUnloader.jsm',
     'ThemeVariableMap.jsm',
     'TopSiteAttribution.jsm',
+    'TorConnect.jsm',
+    'TorProcessService.jsm',
     'TorProtocolService.jsm',
     'TorStrings.jsm',
     'TransientPrefs.jsm',
diff --git a/browser/themes/shared/identity-block/identity-block.inc.css b/browser/themes/shared/identity-block/identity-block.inc.css
index 011fb9f3081c..9a70125495d7 100644
--- a/browser/themes/shared/identity-block/identity-block.inc.css
+++ b/browser/themes/shared/identity-block/identity-block.inc.css
@@ -61,19 +61,9 @@
   -moz-outline-radius: var(--toolbarbutton-border-radius);
 }
 
-%ifdef MOZ_OFFICIAL_BRANDING
 #identity-box[pageproxystate="valid"].chromeUI > #identity-icon-label {
-  color: #420C5D;
-}
-
-toolbar[brighttext] #identity-box[pageproxystate="valid"].chromeUI > #identity-icon-label {
-  color: #CC80FF;
-}
-%endif
-
-#identity-box[pageproxystate="valid"].chromeUI > #identity-icon-label,
-.urlbar-label {
-  opacity: .6;
+  color: var(--tor-branding-color);
+  opacity: 1;
 }
 
 #identity-icon-label {
@@ -132,6 +122,8 @@ toolbar[brighttext] #identity-box[pageproxystate="valid"].chromeUI > #identity-i
 
 #identity-box[pageproxystate="valid"].chromeUI > #identity-icon {
   list-style-image: url(chrome://branding/content/identity-icons-brand.svg);
+  fill: var(--tor-branding-color);
+  fill-opacity: 1;
 }
 
 #urlbar:not(.searchButton) > #urlbar-input-container > #identity-box[pageproxystate="invalid"] > #identity-icon {
diff --git a/browser/themes/shared/jar.inc.mn b/browser/themes/shared/jar.inc.mn
index e4a3c8d2d41c..d38e1001282b 100644
--- a/browser/themes/shared/jar.inc.mn
+++ b/browser/themes/shared/jar.inc.mn
@@ -8,6 +8,7 @@
 # to the location of the actual manifest.
 
   skin/classic/browser/aboutNetError.css                       (../shared/aboutNetError.css)
+  skin/classic/browser/onionPattern.css                        (../shared/onionPattern.css)
   skin/classic/browser/blockedSite.css                         (../shared/blockedSite.css)
   skin/classic/browser/error-pages.css                         (../shared/error-pages.css)
   skin/classic/browser/aboutRestartRequired.css                (../shared/aboutRestartRequired.css)
diff --git a/browser/themes/shared/onionPattern.css b/browser/themes/shared/onionPattern.css
new file mode 100644
index 000000000000..c605a4b4f59e
--- /dev/null
+++ b/browser/themes/shared/onionPattern.css
@@ -0,0 +1,124 @@
+/* Onion pattern */
+
+:root {
+  --sqrt3: 1.73205080757;
+}
+
+.onion-pattern-container {
+  opacity: var(--onion-opacity, 1);
+  flex: auto;           /* grow to consume remaining space on the page */
+  display: flex;
+  margin: 0 auto;
+  width: 100%;
+  height: calc((2 + var(--sqrt3)) * var(--onion-radius, 50px));    /* room for 2 rows of circles */
+  max-height: calc((2 + var(--sqrt3)) * var(--onion-radius, 50px));
+  direction: ltr;
+}
+
+.onion-pattern-crop {
+  display: flex;
+  justify-content: center;
+  overflow-x: hidden;
+  pointer-events: none; /* for some reason, elements with overflow-x: hidden set become focusable */
+
+  margin: 0 auto;
+}
+
+/* Centers horizontally within the root container*/
+.onion-pattern-column {
+  width: calc(40 * var(--onion-radius, 50px)); /* room for 20 circles in a row */
+  height: calc((2 + var(--sqrt3)) * var(--onion-radius, 50px)); /* room for 2 rows of circles */
+  flex-shrink: 0;
+  overflow-x: hidden;   /* clip extra circles on the sides */
+  pointer-events: none; /* for some reason, elements with overflow-x: hidden set become focusable */
+}
+
+.onion-pattern-row {
+  width: calc(40 * var(--onion-radius, 50px)); /* room for 20 circles in a row */
+  display: flex;
+  flex-direction: row;
+  position: relative;
+}
+
+.onion-pattern-offset-row {
+  left: calc(-1 * var(--onion-radius, 50px));
+  margin-top: calc((var(--sqrt3) - 2.0) * var(--onion-radius, 50px));
+}
+
+/* With borders, circles are 100x100 pixels*/
+.circle {
+  position: relative;
+  min-width: calc(2 * var(--onion-radius, 50px));
+  min-height: calc(2 * var(--onion-radius, 50px));
+  border-radius: 50%;
+  box-sizing: border-box;
+}
+
+.inner {
+  position: absolute;
+  box-sizing: border-box;
+  border-radius: 50%;
+}
+
+.inner:nth-child(1){
+  width: 100%;
+  height: 100%;
+}
+
+.inner:nth-child(2){
+  transform: translate(20%, 20%);
+  width: calc(100% * 5/7);
+  height: calc(100% * 5/7);
+}
+
+.inner:nth-child(3){
+  transform: translate(calc(100% * 2/3), calc(100% * 2/3));
+  width: calc(100% * 3/7);
+  height: calc(100% * 3/7);
+}
+
+.inner:nth-child(4){
+  transform: translate(300%, 300%);
+  width: calc(100% * 1/7);
+  height: calc(100% * 1/7);
+}
+
+.solid {
+  background-color: var(--onion-color, #000);
+}
+
+.border {
+  border: 4px solid var(--onion-color, #000);
+}
+
+.dashed {
+  border: 4px dashed var(--onion-color, #000);
+}
+
+.dotted {
+  border: 4px dotted var(--onion-color, #000);
+}
+
+.bold {
+  border: 8px solid var(--onion-color, #000);
+}
+
+.top-half {
+  width: calc(2 * var(--onion-radius, 50px));
+  height: var(--onion-radius, 50px);
+  border-radius: var(--onion-radius, 50px) var(--onion-radius, 50px) 0 0;
+  box-sizing: border-box;
+}
+
+.bottom-half {
+  width: calc(2 * var(--onion-radius, 50px));
+  height: var(--onion-radius, 50px);
+  border-radius: 0 0 var(--onion-radius, 50px) var(--onion-radius, 50px);
+  box-sizing: border-box;
+}
+
+.scaler {
+  position: absolute;
+  left:0;
+  bottom:0;
+}
\ No newline at end of file
diff --git a/browser/themes/shared/onionPattern.inc.xhtml b/browser/themes/shared/onionPattern.inc.xhtml
new file mode 100644
index 000000000000..6bbde93684a2
--- /dev/null
+++ b/browser/themes/shared/onionPattern.inc.xhtml
@@ -0,0 +1,210 @@
+<!--
+ - The abstract onion pattern begins here. There are two
+ - "onion-pattern-row" elements, each containing 14 circles. The width
+ - of "onion-pattern-row" is fixed at a value that is wide enough so the
+ - circles are not distorted by the flex-based layout. The parent
+ - "onion-pattern-container" element has overflow-x: hidden and is designed
+ - to expand to the width of the page, until it reaches a maximum width
+ - that can accommodate all 14 circles. Since the rows are wider than
+ - most browser windows, typically the two rows of onions will fill the
+ - bottom of the page. On really wide pages, the onions are centered at
+ - the bottom of the page.
+-->
+
+<div class="onion-pattern-container">
+  <!-- for some reason, these two elements are focusable, seems related to
+   - flex css somehow; disable their tabindex to fix
+  -->
+  <div class="onion-pattern-crop" tabindex="-1">
+    <div class="onion-pattern-column" tabindex="-1">
+      <div class="onion-pattern-row">
+        <div class="circle solid"></div>
+
+        <div class="circle dashed"></div>
+
+        <div class="circle">
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+        </div>
+
+        <div class="circle">
+          <div class="bottom-half solid"></div>
+          <div class="bottom-half dotted"></div>
+        </div>
+
+        <div class="circle border"></div>
+
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle solid"></div>
+
+        <div class="circle">
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+        </div>
+
+        <div class="circle bold"></div>
+
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+        </div>
+
+        <div class="circle bold"></div>
+
+        <div class="circle">
+          <div class="bottom-half solid"></div>
+          <div class="bottom-half solid"></div>
+        </div>
+
+       <div class="circle">
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+        </div>
+
+        <div class="circle dotted"></div>
+
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle solid"></div>
+
+        <div class="circle">
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+        </div>
+
+        <div class="circle bold"></div>
+
+        <div class="circle dashed"></div>
+      </div>
+
+      <div class="onion-pattern-row onion-pattern-offset-row">
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+        </div>
+
+        <div class="circle bold"></div>
+
+        <div class="circle solid"></div>
+
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle">
+          <div class="top-half solid"></div>
+          <div class="top-half solid"></div>
+        </div>
+
+        <div class="circle border"></div>
+
+        <div class="circle dotted"></div>
+
+        <div class="circle">
+          <div class="top-half border"></div>
+          <div class="top-half dashed"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+        </div>
+
+        <div class="circle">
+          <div class="top-half dotted"></div>
+          <div class="top-half solid"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+          <div class="inner dashed"></div>
+        </div>
+
+        <div class="circle dotted"></div>
+
+        <div class="circle bold"></div>
+
+        <div class="circle solid"></div>
+
+        <div class="circle">
+          <div class="top-half solid"></div>
+          <div class="top-half dotted"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+          <div class="inner dotted"></div>
+        </div>
+
+        <div class="circle">
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+          <div class="inner border"></div>
+        </div>
+
+        <div class="circle dotted"></div>
+
+        <div class="circle">
+          <div class="top-half solid"></div>
+          <div class="top-half solid"></div>
+        </div>
+
+        <div class="circle dotted"></div>
+      </div>
+    </div>
+  </div>
+</div>
\ No newline at end of file
diff --git a/browser/themes/shared/urlbar-searchbar.inc.css b/browser/themes/shared/urlbar-searchbar.inc.css
index d3cc6bf7f024..297dbcdf444d 100644
--- a/browser/themes/shared/urlbar-searchbar.inc.css
+++ b/browser/themes/shared/urlbar-searchbar.inc.css
@@ -826,3 +826,5 @@
 }
 
 %include ../../components/onionservices/content/onionlocation-urlbar.css
+%include ../../components/torconnect/content/torconnect-urlbar.css
+
diff --git a/dom/base/Document.cpp b/dom/base/Document.cpp
index afc872569519..e74851a6672c 100644
--- a/dom/base/Document.cpp
+++ b/dom/base/Document.cpp
@@ -16387,9 +16387,56 @@ void Document::RemoveToplevelLoadingDocument(Document* aDoc) {
 
 StylePrefersColorScheme Document::PrefersColorScheme(
     IgnoreRFP aIgnoreRFP) const {
+
+  // tor-browser#27476
+  // should this document ignore resist finger-printing settings with regards to
+  // setting the color scheme
+  // currently only enabled for about:torconnect but we could expand to other non-
+  // SystemPrincipal pages if we wish
+  const auto documentUsesPreferredColorScheme = [](auto const* constDocument) -> bool {
+    if (auto* document = const_cast<Document*>(constDocument); document != nullptr) {
+      auto uri = document->GetDocBaseURI();
+
+      // try and extract out our prepath and filepath portions of the uri to C-strings
+      nsAutoCString prePathStr, filePathStr;
+      if(NS_FAILED(uri->GetPrePath(prePathStr)) ||
+         NS_FAILED(uri->GetFilePath(filePathStr))) {
+        return false;
+      }
+
+      // stick them in string view for easy comparisons
+      std::string_view prePath(prePathStr.get(), prePathStr.Length()),
+                       filePath(filePathStr.get(), filePathStr.Length());
+
+      // these about URIs will have the user's preferred color scheme exposed to them
+      // we can place other URIs here in the future if we wish
+      // see nsIURI.idl for URI part definitions
+      constexpr struct {
+        std::string_view prePath;
+        std::string_view filePath;
+      } allowedURIs[] = {
+        { "about:", "torconnect" },
+      };
+
+      // check each uri in the allow list against this document's uri
+      // verify the prepath and the file path match
+      for(auto const& uri : allowedURIs) {
+        if (prePath == uri.prePath &&
+            filePath == uri.filePath) {
+          // positive match means we can apply dark-mode to the page
+          return true;
+        }
+      }
+    }
+
+    // do not allow if no match or other error
+    return false;
+  };
+
   if (aIgnoreRFP == IgnoreRFP::No &&
-      nsContentUtils::ShouldResistFingerprinting(this)) {
-    return StylePrefersColorScheme::Light;
+      nsContentUtils::ShouldResistFingerprinting(this) &&
+      !documentUsesPreferredColorScheme(this)) {
+      return StylePrefersColorScheme::Light;
   }
 
   if (nsPresContext* pc = GetPresContext()) {
diff --git a/dom/base/nsGlobalWindowOuter.cpp b/dom/base/nsGlobalWindowOuter.cpp
index abe1e56d9714..759060f131ff 100644
--- a/dom/base/nsGlobalWindowOuter.cpp
+++ b/dom/base/nsGlobalWindowOuter.cpp
@@ -6082,6 +6082,8 @@ void nsGlobalWindowOuter::CloseOuter(bool aTrustedCaller) {
     NS_ENSURE_SUCCESS_VOID(rv);
 
     if (!StringBeginsWith(url, NS_LITERAL_STRING("about:neterror")) &&
+        // we want about:torconnect pages to be able to close themselves after bootstrap
+        !StringBeginsWith(url, NS_LITERAL_STRING("about:torconnect")) &&
         !HadOriginalOpener() && !aTrustedCaller) {
       bool allowClose =
           mAllowScriptsToClose ||
diff --git a/toolkit/components/processsingleton/MainProcessSingleton.jsm b/toolkit/components/processsingleton/MainProcessSingleton.jsm
index db1e2dc8f568..ea9288dccbb3 100644
--- a/toolkit/components/processsingleton/MainProcessSingleton.jsm
+++ b/toolkit/components/processsingleton/MainProcessSingleton.jsm
@@ -24,6 +24,11 @@ MainProcessSingleton.prototype = {
           null
         );
 
+        ChromeUtils.import(
+          "resource:///modules/TorConnect.jsm",
+          null
+        );
+
         // Load this script early so that console.* is initialized
         // before other frame scripts.
         Services.mm.loadFrameScript(
diff --git a/toolkit/modules/AsyncPrefs.jsm b/toolkit/modules/AsyncPrefs.jsm
index aca86556cd5e..b81ff5e22b9b 100644
--- a/toolkit/modules/AsyncPrefs.jsm
+++ b/toolkit/modules/AsyncPrefs.jsm
@@ -18,6 +18,8 @@ const kAllowedPrefs = new Set([
   "testing.allowed-prefs.some-char-pref",
   "testing.allowed-prefs.some-int-pref",
 
+  "extensions.torlauncher.quickstart",
+
   "narrate.rate",
   "narrate.voice",
 
diff --git a/toolkit/modules/RemotePageAccessManager.jsm b/toolkit/modules/RemotePageAccessManager.jsm
index eceaa7c857de..54230e1175ec 100644
--- a/toolkit/modules/RemotePageAccessManager.jsm
+++ b/toolkit/modules/RemotePageAccessManager.jsm
@@ -96,6 +96,7 @@ let RemotePageAccessManager = {
       RPMPrefIsLocked: ["security.tls.version.min"],
       RPMAddToHistogram: ["*"],
       RPMGetTorStrings: ["*"],
+      RPMSendQuery: ["ShouldShowTorConnect"],
     },
     "about:newinstall": {
       RPMGetUpdateChannel: ["*"],
@@ -179,6 +180,21 @@ let RemotePageAccessManager = {
       RPMAddMessageListener: ["*"],
       RPMRemoveMessageListener: ["*"],
     },
+    "about:torconnect": {
+      RPMAddMessageListener: [
+        "torconnect:state-change",
+      ],
+      RPMSendAsyncMessage: [
+        "torconnect:open-tor-preferences",
+        "torconnect:begin-bootstrap",
+        "torconnect:cancel-bootstrap",
+        "torconnect:set-quickstart",
+      ],
+      RPMSendQuery: [
+        "torconnect:get-init-args",
+        "torconnect:copy-tor-logs",
+      ],
+    },
   },
 
   /**
diff --git a/toolkit/mozapps/update/UpdateService.jsm b/toolkit/mozapps/update/UpdateService.jsm
index 1fb397373151..79881cba42d6 100644
--- a/toolkit/mozapps/update/UpdateService.jsm
+++ b/toolkit/mozapps/update/UpdateService.jsm
@@ -12,6 +12,17 @@ const { AppConstants } = ChromeUtils.import(
 const { AUSTLMY } = ChromeUtils.import(
   "resource://gre/modules/UpdateTelemetry.jsm"
 );
+
+const { TorProtocolService } = ChromeUtils.import(
+  "resource:///modules/TorProtocolService.jsm"
+);
+
+function _shouldRegisterBootstrapObserver(errorCode) {
+  return errorCode == PROXY_SERVER_CONNECTION_REFUSED &&
+         !TorProtocolService.isBootstrapDone() &&
+         TorProtocolService.ownsTorDaemon;
+};
+
 const {
   Bits,
   BitsRequest,
@@ -201,6 +212,7 @@ const INVALID_UPDATER_STATUS_CODE = 99;
 // Custom update error codes
 const BACKGROUNDCHECK_MULTIPLE_FAILURES = 110;
 const NETWORK_ERROR_OFFLINE = 111;
+const PROXY_SERVER_CONNECTION_REFUSED = 2152398920;
 
 // Error codes should be < 1000. Errors above 1000 represent http status codes
 const HTTP_ERROR_OFFSET = 1000;
@@ -2220,6 +2232,9 @@ UpdateService.prototype = {
       case "network:offline-status-changed":
         this._offlineStatusChanged(data);
         break;
+      case "torconnect:bootstrap-complete":
+        this._bootstrapComplete();
+        break;
       case "nsPref:changed":
         if (data == PREF_APP_UPDATE_LOG || data == PREF_APP_UPDATE_LOG_FILE) {
           gLogEnabled; // Assigning this before it is lazy-loaded is an error.
@@ -2640,6 +2655,35 @@ UpdateService.prototype = {
     this._attemptResume();
   },
 
+  _registerBootstrapObserver: function AUS__registerBootstrapObserver() {
+    if (this._registeredBootstrapObserver) {
+      LOG(
+        "UpdateService:_registerBootstrapObserver - observer already registered"
+      );
+      return;
+    }
+
+    LOG(
+      "UpdateService:_registerBootstrapObserver - waiting for tor bootstrap to " +
+        "be complete, then forcing another check"
+    );
+
+    Services.obs.addObserver(this, "torconnect:bootstrap-complete");
+    this._registeredBootstrapObserver = true;
+  },
+
+  _bootstrapComplete: function AUS__bootstrapComplete() {
+    Services.obs.removeObserver(this, "torconnect:bootstrap-complete");
+    this._registeredBootstrapObserver = false;
+
+    LOG(
+      "UpdateService:_bootstrapComplete - bootstrapping complete, forcing " +
+        "another background check"
+    );
+
+    this._attemptResume();
+  },
+
   onCheckComplete: function AUS_onCheckComplete(request, updates) {
     this._selectAndInstallUpdate(updates);
   },
@@ -2659,6 +2703,11 @@ UpdateService.prototype = {
         AUSTLMY.pingCheckCode(this._pingSuffix, AUSTLMY.CHK_OFFLINE);
       }
       return;
+    } else if (_shouldRegisterBootstrapObserver(update.errorCode)) {
+      // Register boostrap observer to try again, but only when we own the
+      // tor process.
+      this._registerBootstrapObserver();
+      return;
     }
 
     // Send the error code to telemetry
@@ -5189,6 +5238,7 @@ Downloader.prototype = {
     var state = this._patch.state;
     var shouldShowPrompt = false;
     var shouldRegisterOnlineObserver = false;
+    var shouldRegisterBootstrapObserver = false;
     var shouldRetrySoon = false;
     var deleteActiveUpdate = false;
     var retryTimeout = Services.prefs.getIntPref(
@@ -5266,7 +5316,18 @@ Downloader.prototype = {
       );
       shouldRegisterOnlineObserver = true;
       deleteActiveUpdate = false;
-
+    } else if(_shouldRegisterBootstrapObserver(status)) {
+      // Register a bootstrap observer to try again.
+      // The bootstrap observer will continue the incremental download by
+      // calling downloadUpdate on the active update which continues
+      // downloading the file from where it was.
+      LOG("Downloader:onStopRequest - not bootstrapped, register bootstrap observer: true");
+      AUSTLMY.pingDownloadCode(
+        this.isCompleteUpdate,
+        AUSTLMY.DWNLD_RETRY_OFFLINE
+      );
+      shouldRegisterBootstrapObserver = true;
+      deleteActiveUpdate = false;
       // Each of NS_ERROR_NET_TIMEOUT, ERROR_CONNECTION_REFUSED,
       // NS_ERROR_NET_RESET and NS_ERROR_DOCUMENT_NOT_CACHED can be returned
       // when disconnecting the internet while a download of a MAR is in
@@ -5384,7 +5445,7 @@ Downloader.prototype = {
 
     // Only notify listeners about the stopped state if we
     // aren't handling an internal retry.
-    if (!shouldRetrySoon && !shouldRegisterOnlineObserver) {
+    if (!shouldRetrySoon && !shouldRegisterOnlineObserver && !shouldRegisterBootstrapObserver) {
       // Make shallow copy in case listeners remove themselves when called.
       var listeners = this._listeners.concat();
       var listenerCount = listeners.length;
@@ -5532,6 +5593,9 @@ Downloader.prototype = {
     if (shouldRegisterOnlineObserver) {
       LOG("Downloader:onStopRequest - Registering online observer");
       this.updateService._registerOnlineObserver();
+    } else if (shouldRegisterBootstrapObserver) {
+      LOG("Downloader:onStopRequest - Registering bootstrap observer");
+      this.updateService._registerBootstrapObserver();
     } else if (shouldRetrySoon) {
       LOG("Downloader:onStopRequest - Retrying soon");
       this.updateService._consecutiveSocketErrors++;
diff --git a/toolkit/themes/shared/in-content/info-pages.inc.css b/toolkit/themes/shared/in-content/info-pages.inc.css
index 6943a3340e35..5b3c911a5aab 100644
--- a/toolkit/themes/shared/in-content/info-pages.inc.css
+++ b/toolkit/themes/shared/in-content/info-pages.inc.css
@@ -41,10 +41,11 @@ body.wide-container {
   background-image: url("chrome://global/skin/icons/info.svg");
   background-position: left 0;
   background-repeat: no-repeat;
-  background-size: 1.6em;
-  margin-inline-start: -2.3em;
-  padding-inline-start: 2.3em;
-  font-size: 2.2em;
+  background-size: 3.0em;
+  margin-inline-start: -4.5em;
+  padding-inline-start: 4.5em;
+  margin-bottom: -2.0em;
+  font-size: 1.5em;
   -moz-context-properties: fill;
   fill: currentColor;
 }
@@ -56,7 +57,10 @@ body.wide-container {
 
 .title-text {
   font-size: inherit;
-  padding-bottom: 0.4em;
+  padding-bottom: 2.0em !important;
+  line-height: 1.0em;
+  font-weight: bold;
+  vertical-align: top;
 }
 
 @media (max-width: 970px) {
@@ -68,6 +72,7 @@ body.wide-container {
 
   .title-text {
     padding-top: 0;
+    vertical-align: middle !important;
   }
 }
 
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
index 2ff107b553b2..f8fa83574df7 100644
--- a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
@@ -70,6 +70,10 @@ function getGlobalScriptIncludes(scriptPath) {
     let match = line.match(globalScriptsRegExp);
     if (match) {
       let sourceFile = match[1]
+        .replace(
+          "chrome://browser/content/torconnect/",
+          "browser/components/torconnect/content/"
+        )
         .replace(
           "chrome://browser/content/search/",
           "browser/components/search/content/"





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