Separate policy into smaller modules

24 files changed, 448 insertions, 241 deletions

diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..e2b0656
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,80 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+with pkgs;
+
+# Where to find documentation:
+# http://kb.mozillazine.org/About:config_entries
+# https://www.privacy-handbuch.de/download/moderat/user.js
+# https://github.com/mozilla/policy-templates, about:policies#documentation
+
+let
+  directory = callPackage nix/directory.nix {};
+  ffLib = callPackage nix/lib.nix {};
+  search = callPackage nix/search.nix {};
+
+  callProfile = p: lib.callPackageWith (pkgs // {
+    inherit ffLib;
+  }) p {};
+in rec {
+  profiles = directory.listDirectory callProfile ./profiles;
+
+  disableErrorReporting.preferences = {
+    breakpad.reportUrl = "";
+  };
+
+  activeProfiles = with profiles; [
+    defaults
+
+    addons.disableExtensionSignatureChecking
+    addons.privacybadger addons.noscript
+    addons.borderify
+
+    minimalConnections
+    minimalHome
+    noAccounts
+    noClutter
+    noMedia
+    noNormandy
+    noUpdates
+    noStudies
+    noPocket
+    noTunnels
+    noLocation
+    noSafebrowsing
+    restrict
+    # distrustUser
+
+    forgetActivity
+
+    { policies.RequestedLocales = [ "de-DE" "en-US" ]; }
+  ];
+
+  config = ffLib.mergeProfiles activeProfiles;
+  bundleConfig = {
+    inherit (config) policies;
+    preferences = ffLib.flattenAttrs config.preferences;
+  };
+
+  bundle = ffLib.bundle bundleConfig;
+  launcher = ffLib.launcher bundle;
+
+/*
+  bundle = profiles.bundle {
+    policies = {
+      Preferences = profiles.flattenAttrs {
+        dom.event.contextmenu.enabled = false;
+
+        extensions = {
+          blocklist.enabled = false;
+          getAddons.showPane = false;
+          htmlaboutaddons.recommendations.enabled = false;
+        };
+
+        security.ssl.errorReporting.enabled = false;
+      };
+
+      SearchBar = "separate";
+    };
+  };
+  */
+}
diff --git a/nix/default.nix b/nix/default.nix
deleted file mode 100644
index b3ac1c2..0000000
--- a/nix/default.nix
+++ /dev/null
@@ -1,234 +0,0 @@
-with import <nixpkgs> {};
-
-# http://kb.mozillazine.org/About:config_entries
-# https://www.privacy-handbuch.de/download/moderat/user.js
-
-rec {
-  profiles = callPackage ./lib.nix {};
-  search = callPackage ./search.nix {};
-
-  # Normandy enables Mozilla to push changes to the default settings
-  disableNormandy = {
-    app.normandy = {
-      enabled = false;
-      api_url = "";
-    };
-  };
-
-  disableTelemetry = {
-    toolkit.telemetry = {
-      enabled = false;
-      server = "";
-      unified = false;
-      archive.enabled = false;
-
-      newProfilePing.enabled = false;
-      firstShutdownPing.enabled = false;
-      shutdownPing.enabled = false;
-      updatePing.enabled = false;
-    };
-  };
-
-  disableErrorReporting = {
-    breakpad.reportUrl = "";
-  };
-
-  basic = {
-    network.captive-portal-service.enabled = false;
-    
-    # don't update search engines
-    browser.search = {
-      update = false;
-      geoSpecificDefaults = false;
-      "geoSpecificDefaults.url" = "";
-      geoip.url = "";
-      suggest.enabled = false;
-      reset.enabled = false;
-      reset.whitelist = "";
-    };
-
-    # disable studies
-    # https://blog.mozilla.org/firefox/update-looking-glass-add/
-    # https://mozilla.github.io/normandy/user/end_user_interaction.html#opt-out-preference
-    app.shield.optoutstudies.enabled = false;
-
-    # disable pocket
-    extensions.pocket.enabled = false;
-  };
-
-  profile = profiles.profile {
-    preferences = basic;
-    search = search.mkSearchConfig {
-      engines = [ search.engines.qwantjunior ];
-    };
-  };
-
-  bundle = profiles.bundle {
-    # https://github.com/mozilla/policy-templates, about:policies#documentation
-    policies = {
-      BlockAboutAddons = false;
-      BlockAboutConfig = false;
-      BlockAboutProfiles = true;
-
-      CaptivePortal = false;
-
-      DisableMasterPasswordCreation = true;
-      DisableAppUpdate = true;
-      DisableFeedbackCommands = true;
-      DisableFirefoxAccounts = true;
-      DisableFirefoxStudies = true;
-      DisableFormHistory = true;
-      DisablePasswordReveal = true;
-      DisablePocket = true;
-      DisableProfileImport = true;
-      DisableProfileRefresh = true;
-
-      DisableSecurityBypass = {
-        InvalidCertificate = true;
-        SafeBrowsing = false;
-      };
-
-      DisableSystemAddonUpdate = true;
-      DisableTelemetry = true;
-
-      DNSOverHTTPS = {
-        Enabled = false;
-        Locked = true;
-      };
-
-      DontCheckDefaultBrowser = true;
-
-      EnableTrackingProtection = {
-        Cryptomining = true;
-        Fingerprinting = true;
-        Value = true;
-      };
-
-      "3rdparty".Extensions = {
-        # uBlock Origin
-        "uBlock0@raymondhill.net".adminSettings = builtins.readFile ../ublock-config.json;
-        # Privacy Badger
-        "jid1-MnnxcxisBPnSXQ@jetpack" = {
-          showIntroPage = false;
-        };
-      };
-
-      ExtensionSettings =
-        let
-          fetchAddon = args: "file://${pkgs.fetchurl args}";
-          addon = args: {
-            installation_mode = "force_installed";
-            install_url = fetchAddon args;
-          };
-        in {
-        "*" = {
-          blocked_install_message = "Installation von Erweiterungen ist nicht zugelassen.";
-          install_sources = ["https://addons.mozilla.org/"];
-          installation_mode = "blocked";
-          allowed_types = ["extension"];
-        };
-        # Extension IDs as keys, .applications.gecko.id in manifest.json
-        # uBlock Origin
-        "uBlock0@raymondhill.net" = addon {
-          url = "https://addons.mozilla.org/firefox/downloads/file/3509800/ublock_origin-1.25.0-an+fx.xpi";
-          sha256 = "0pyna4c2b2ffh8ifjj4c8ga9b73g37pk432nyinf8majyb1fq6rc";
-        };
-        # Privacy Badger
-        "jid1-MnnxcxisBPnSXQ@jetpack" = addon {
-          url = "https://addons.mozilla.org/firefox/downloads/file/3509922/privacy_badger-2020.2.19-an+fx.xpi";
-          sha256 = "1issggv5wl5x3a4p3q8hrhbkhgsdx9f2qzbscg6y6f75yazswc20";
-        };
-        # NoScript
-        "{73a6fe31-595d-460b-a920-fcc0f8843232}" = addon {
-          url = "https://addons.mozilla.org/firefox/downloads/file/3517653/noscript_security_suite-11.0.15-an+fx.xpi";
-          sha256 = "0gb0a6pp0rj9jpg1094arqvcwxh1rd2m47ijawlidybm29qmyyay";
-        };
-      };
-      ExtensionUpdate = false;
-
-      FlashPlugin.Default = false;
-
-      FirefoxHome = {
-        Search = true;
-        TopSites = false;
-        Highlights = false;
-        Pocket = false;
-        Snippets = false;
-        Locked = true;
-      };
-
-      Homepage.StartPage = "none";
-
-      NewTabPage = false;
-      NoDefaultBookmarks = true;
-      NetworkPrediction = false;
-
-      OfferToSaveLogins = false;
-      OverrideFirstRunPage = "";
-      OverridePostUpdatePage = "";
-
-      PasswordManagerEnabled = false;
-
-      Permissions.Location = {
-        BlockNewRequests = true;
-        Locked = true;
-      };
-
-      Preferences = profiles.flattenAttrs {
-        app.update.auto = false;
-
-        browser = {
-          cache.disk.enable = false;
-          fixup.dns_first_for_single_words = true;
-
-          safebrowsing = {
-            phishing.enabled = false;
-            malware.enabled = false;
-          };
-
-          search.update = false;
-          slowStartup.notificationDisabled = true;
-        };
-
-        dom.event.contextmenu.enabled = false;
-
-        extensions = {
-          blocklist.enabled = false;
-          getAddons.showPane = false;
-          htmlaboutaddons.recommendations.enabled = false;
-        };
-
-        geo.enabled = false;
-
-        media = {
-          eme.enabled = false;
-          gmp-gmpopenh264.enabled = false;
-          gmp-widevinecdm.enabled = false;
-          peerconnection.enabled = false;
-        };
-
-        network.IDN_show_punycode = true;
-
-        security.ssl.errorReporting.enabled = false;
-      };
-
-      Proxy = {
-        Mode = "none";
-        Locked = true;
-      };
-
-      RequestedLocales = [ "de-DE" "en-US" ];
-
-      SanitizeOnShutdown = true;
-
-      SearchBar = "separate";
-      SearchSuggestEnabled = false;
-
-      SearchEngines = {
-        Remove = [ "twitter" "bing" ];
-      };
-    };
-  };
-
-  launcher = profiles.launcher bundle;
-}
diff --git a/nix/directory.nix b/nix/directory.nix
new file mode 100644
index 0000000..980c718
--- /dev/null
+++ b/nix/directory.nix
@@ -0,0 +1,18 @@
+{ callPackage }:
+
+with builtins;
+rec {
+  listDirectory = action: dir:
+    let
+      list = readDir dir;
+    in listToAttrs (map
+      (name: {
+        name = replaceStrings [".nix"] [""] name;
+        value = action (dir + ("/" + name));
+      })
+      (attrNames list));
+
+  pathDirectory = listDirectory (x: x);
+  importDirectory = listDirectory import;
+  callDirectory = listDirectory (p: callPackage p {});
+}
diff --git a/nix/lib.nix b/nix/lib.nix
index df1097f..12940b1 100644
--- a/nix/lib.nix
+++ b/nix/lib.nix
@@ -18,10 +18,11 @@ rec {
     else if false == v then "false"
     else abort "unsupported value type: ${builtins.typeOf v}";
 
-  toUserPrefs = settings: pkgs.writeText "user.js"
+  mkPrefs = settings: pkgs.writeText "prefs.js"
+    ("// dummy line\n" + 
     (lib.concatStringsSep "\n"
-      (lib.mapAttrsToList (k: v: "user_pref(\"${k}\", ${mkValueString v});")
-        (flattenAttrs settings)));
+      (lib.mapAttrsToList (k: v: "pref(\"${k}\", ${mkValueString v}, locked);")
+        (flattenAttrs settings))));
 
   toSearchConfig = settings: pkgs.runCommand "search.json.mozlz4" {} ''
     ${mozlz4.compress} < ${pkgs.writeText "search.json" (builtins.toJSON settings)} > $out
@@ -38,25 +39,39 @@ rec {
     inherit policies;
   });
 
-  bundle = { policies }:
+  mergeProfiles = profiles:                                         
+    let
+      sanitise = args: {
+        policies = args.policies or {};
+        preferences = args.preferences or {};
+      };
+      sanitised = map sanitise profiles;
+      final = lib.foldl lib.recursiveUpdate {} sanitised;
+    in final;
+
+  bundle = { policies ? {}, preferences ? {} }:
     let
       firefox = pkgs.firefox-unwrapped;
+      policies' = mkPolicies policies;
+      preferences' = mkPrefs preferences;
       patched = pkgs.runCommand "firefox-bundle" {
           nativeBuildInputs = [ pkgs.nix ]; 
           disallowedReferences = [ firefox ];
         } ''
         cp -r ${firefox} $out
         chmod -R +w $out
+        # correct argv[0], which is used to locate distribution and defaults
         substituteInPlace $out/bin/firefox \
           --replace ${firefox} $out
 
         mkdir $out/lib/firefox/distribution
-        cp ${mkPolicies policies} $out/lib/firefox/distribution/policies.json
+        cp ${policies'} $out/lib/firefox/distribution/policies.json
+        cp ${preferences'} $out/lib/firefox/defaults/pref/99-custom.js
       '';
-      wrapped = pkgs.wrapFirefox patched {
+      wrapped = (pkgs.wrapFirefox patched {
         browserName = "firefox";
         version = "custom";
-      };
+      }) // { inherit policies preferences; };
     in wrapped;
 
   launcher = firefox: pkgs.writeShellScriptBin "firefox" ''
diff --git a/profiles/addons/default.nix b/profiles/addons/default.nix
new file mode 100644
index 0000000..0e1827f
--- /dev/null
+++ b/profiles/addons/default.nix
@@ -0,0 +1,51 @@
+{ lib, fetchurl }:
+
+let
+  # Extension IDs are used as keys, see .applications.gecko.id in manifest.json
+  addon = { id, url, sha256, settings ? null }: {
+    policies = {
+      ExtensionSettings.${id} = {
+        installation_mode = "force_installed";
+        install_url = "file://${fetchurl { inherit url sha256; }}";
+      };
+    } // (lib.optionalAttrs (settings != null) {
+      "3rdparty".Extensions.${id} = settings;
+    });
+  };
+in {
+  # This can be safe-ish, if extension installation is also disabled
+  disableExtensionSignatureChecking.preferences = {
+    xpinstall.signatures.required = false;
+  };
+
+  privacybadger = addon {
+    id = "jid1-MnnxcxisBPnSXQ@jetpack";
+    url = "https://addons.mozilla.org/firefox/downloads/file/3509922/privacy_badger-2020.2.19-an+fx.xpi";
+    sha256 = "1issggv5wl5x3a4p3q8hrhbkhgsdx9f2qzbscg6y6f75yazswc20";
+    settings = {
+      showIntroPage = false;
+    };
+  };
+
+  noscript = addon {
+    id = "{73a6fe31-595d-460b-a920-fcc0f8843232}";
+    url = "https://addons.mozilla.org/firefox/downloads/file/3517653/noscript_security_suite-11.0.15-an+fx.xpi";
+    sha256 = "0gb0a6pp0rj9jpg1094arqvcwxh1rd2m47ijawlidybm29qmyyay";
+  };
+
+  ublock = addon {
+    id = "uBlock0@raymondhill.net";
+    url = "https://addons.mozilla.org/firefox/downloads/file/3509800/ublock_origin-1.25.0-an+fx.xpi";
+    sha256 = "0pyna4c2b2ffh8ifjj4c8ga9b73g37pk432nyinf8majyb1fq6rc";
+    settings.adminSettings = builtins.readFile ./ublock/config.json;
+  };
+
+/*
+  borderify.policies = {
+    ExtensionSettings."borderify@example.com" = {
+      installation_mode = "force_installed";
+      install_url = "file://${../../borderify.xpi}";
+    };
+  };
+*/
+}
diff --git a/ublock-config.json b/profiles/addons/ublock/config.json
index 67ba236..67ba236 100644
--- a/ublock-config.json
+++ b/profiles/addons/ublock/config.json
diff --git a/profiles/defaults.nix b/profiles/defaults.nix
new file mode 100644
index 0000000..72315f6
--- /dev/null
+++ b/profiles/defaults.nix
@@ -0,0 +1,21 @@
+{ ffLib }: {
+  policies = {
+    /*EnableTrackingProtection = {
+      Cryptomining = true;
+      Fingerprinting = true;
+      Value = true;
+    };*/
+
+    EnableTrackingProtection = {
+      Cryptomining = false;
+      Fingerprinting = false;
+      Value = false;
+    };
+
+    FlashPlugin.Default = false;
+  };
+
+  preferences = {
+    network.IDN_show_punycode = true;
+  };
+}
diff --git a/profiles/distrustUser.nix b/profiles/distrustUser.nix
new file mode 100644
index 0000000..b90175b
--- /dev/null
+++ b/profiles/distrustUser.nix
@@ -0,0 +1,7 @@
+{ ffLib }: {
+  policies = {
+    BlockAboutAddons = true;
+    BlockAboutConfig = true;
+    BlockAboutProfiles = true;
+  };
+}
diff --git a/profiles/forgetActivity.nix b/profiles/forgetActivity.nix
new file mode 100644
index 0000000..e810723
--- /dev/null
+++ b/profiles/forgetActivity.nix
@@ -0,0 +1,11 @@
+{ }: {
+  policies = {
+    OfferToSaveLogins = false;
+    PasswordManagerEnabled = false;
+    SanitizeOnShutdown = true;
+  };
+
+  preferences = {
+    browser.cache.disk.enabled = false;
+  };
+}
diff --git a/profiles/lessFingerprinting.nix b/profiles/lessFingerprinting.nix
new file mode 100644
index 0000000..71c8be5
--- /dev/null
+++ b/profiles/lessFingerprinting.nix
@@ -0,0 +1,6 @@
+{}: {
+  # The specific pattern of anti-fingerprinting measures taken can itself be used for fingerprinting
+  preferences = {
+    dom.battery.enabled = false;
+  };
+}
diff --git a/profiles/minimalConnections.nix b/profiles/minimalConnections.nix
new file mode 100644
index 0000000..66c931b
--- /dev/null
+++ b/profiles/minimalConnections.nix
@@ -0,0 +1,68 @@
+{ ffLib }: {
+  # https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections
+  policies = {
+    CaptivePortal = false;
+    DisableTelemetry = true;
+    NetworkPrediction = false;
+    SearchSuggestEnabled = false;
+
+    Preferences = ffLib.flattenAttrs {
+      extensions = {
+        blocklist.enabled = false;
+        getAddons.showPane = false;
+        htmlaboutaddons.recommendations.enabled = false;
+      };
+    };
+  };
+
+  preferences = {
+    toolkit.telemetry = {
+      enabled = false;       
+      server = "";                 
+      unified = false;
+      archive.enabled = false;
+    
+      newProfilePing.enabled = false;
+      firstShutdownPing.enabled = false;
+      shutdownPing.enabled = false;
+      shutdownPingSender.enabled = false;
+
+      # background hang reporting
+      bhrPing.enabled = false;
+      updatePing.enabled = false;
+    };
+
+    extensions = {
+      blocklist.enabled = false;
+      getAddons.showPane = false;
+      getAddons.cache.enabled = false;
+      htmlaboutaddons.recommendations.enabled = false;
+
+      abuseReport = {
+        url = "";
+        amoDetailsURL = "";
+      };
+    };
+    
+    network = {
+      predictor = {
+        enable-prefetch = false;
+        prefetch-next = false;
+      };
+
+      # Prevent FF from establishing connections on mouse-hover
+      http.speculative-parallel-limit = 0;
+    };
+
+    services.settings.server = "";
+    
+    # TODO: what exactly does this block?
+    services.blocklist.pinning.enabled = false;
+
+    # don't send single words to search engine
+    browser.fixup.dns_first_for_single_words = true;
+
+    beacon.enabled = false;
+    browser.send_pings = false;
+  };
+}
diff --git a/profiles/minimalHome.nix b/profiles/minimalHome.nix
new file mode 100644
index 0000000..04df5df
--- /dev/null
+++ b/profiles/minimalHome.nix
@@ -0,0 +1,18 @@
+{ ffLib }: {
+  policies = {
+    FirefoxHome = {
+      Search = true;
+      TopSites = false;
+      Highlights = false;
+      Pocket = false;
+      Snippets = false;
+      Locked = true; # TODO: false?
+    };
+
+    OverrideFirstRunPage = "";
+    OverridePostUpdatePage = "";
+    
+    NewTabPage = false;
+    NoDefaultBookmarks = true;
+  };
+}
diff --git a/profiles/noAccounts.nix b/profiles/noAccounts.nix
new file mode 100644
index 0000000..6e712a4
--- /dev/null
+++ b/profiles/noAccounts.nix
@@ -0,0 +1,5 @@
+{ }: {
+  preferences = {
+    identity.fxaccounts.enabled = false;
+  };
+}
diff --git a/profiles/noClutter.nix b/profiles/noClutter.nix
new file mode 100644
index 0000000..e416894
--- /dev/null
+++ b/profiles/noClutter.nix
@@ -0,0 +1,9 @@
+{ }: {
+  policies = {
+    HomePage.StartPage = "none";
+  };
+
+  preferences = {
+    browser.slowStartup.notificationDisabled = true;
+  };
+}
diff --git a/profiles/noLocation.nix b/profiles/noLocation.nix
new file mode 100644
index 0000000..7b05a98
--- /dev/null
+++ b/profiles/noLocation.nix
@@ -0,0 +1,12 @@
+{ ffLib }: {
+  policies = {
+    Permissions.Location = {
+      BlockNewRequests = true;
+      Locked = true;
+    };
+
+    Preferences = ffLib.flattenAttrs {
+      geo.enabled = false;
+    };
+  };
+}
diff --git a/profiles/noMedia.nix b/profiles/noMedia.nix
new file mode 100644
index 0000000..bd5b856
--- /dev/null
+++ b/profiles/noMedia.nix
@@ -0,0 +1,12 @@
+{ ffLib }: {
+  policies = {
+    Preferences = ffLib.flattenAttrs {
+      media = {
+        eme.enabled = false;
+        gmp-gmpopenh264.enabled = false;
+        gmp-widevinecdm.enabled = false;
+        peerconnection.enabled = false;
+      };
+    };
+  };
+}
diff --git a/profiles/noNormandy.nix b/profiles/noNormandy.nix
new file mode 100644
index 0000000..1daeccb
--- /dev/null
+++ b/profiles/noNormandy.nix
@@ -0,0 +1,9 @@
+{ ffLib }: {
+  # Normandy enables Mozilla to push changes to the default settings
+  preferences = {
+    app.normandy = {
+      enabled = false;                              
+      api_url = "";
+    };
+  };
+}
diff --git a/profiles/noOCSP.nix b/profiles/noOCSP.nix
new file mode 100644
index 0000000..a61b9ed
--- /dev/null
+++ b/profiles/noOCSP.nix
@@ -0,0 +1,5 @@
+{ }: {
+  preferences = {
+    security.OCSP.enabled = false;
+  };
+}
diff --git a/profiles/noPocket.nix b/profiles/noPocket.nix
new file mode 100644
index 0000000..0814328
--- /dev/null
+++ b/profiles/noPocket.nix
@@ -0,0 +1,9 @@
+{ ffLib }: {
+  policies = {
+    DisablePocket = true;
+  };
+
+  preferences = {
+    extensions.pocket.enabled = false;
+  };
+}
diff --git a/profiles/noSafebrowsing.nix b/profiles/noSafebrowsing.nix
new file mode 100644
index 0000000..bd53006
--- /dev/null
+++ b/profiles/noSafebrowsing.nix
@@ -0,0 +1,10 @@
+{ ffLib }: {
+  preferences = {
+    browser.safebrowsing = {
+      phishing.enabled = false;
+      malware.enabled = false;
+      downloads.enabled = false;
+      downloads.remote.enabled = false;
+    };
+  };
+}
diff --git a/profiles/noStudies.nix b/profiles/noStudies.nix
new file mode 100644
index 0000000..222cefe
--- /dev/null
+++ b/profiles/noStudies.nix
@@ -0,0 +1,11 @@
+{ ffLib }: {
+  # https://blog.mozilla.org/firefox/update-looking-glass-add/
+  # https://mozilla.github.io/normandy/user/end_user_interaction.html#opt-out-preference
+  policies = {
+    DisableFirefoxStudies = true;
+  };
+
+  preferences = {
+    app.shield.optoutstudies.enabled = false;
+  };
+}
diff --git a/profiles/noTunnels.nix b/profiles/noTunnels.nix
new file mode 100644
index 0000000..f8f5154
--- /dev/null
+++ b/profiles/noTunnels.nix
@@ -0,0 +1,13 @@
+{ }: {
+  policies = {
+    DNSOverHTTPS = {
+      Enabled = false;
+      Locked = true;
+    };
+
+    Proxy = {
+      Mode = "none";
+      Locked = true;
+    };
+  };
+}
diff --git a/profiles/noUpdates.nix b/profiles/noUpdates.nix
new file mode 100644
index 0000000..67cdb43
--- /dev/null
+++ b/profiles/noUpdates.nix
@@ -0,0 +1,25 @@
+{ ffLib }: {
+  policies = {
+    DisableAppUpdate = true;
+    DisableSystemAddonUpdate = true;
+    ExtensionUpdate = false;
+
+    Preferences = ffLib.flattenAttrs {
+      app.update.auto = false;
+      browser.search.update = false;
+    };
+  };
+
+  preferences = {
+    # try really hard to prevent search engine resets, probably wrong
+    browser.search = {
+      update = false;
+      geoSpecificDefaults = false;
+      "geoSpecificDefaults.url" = "";
+      geoip.url = "";
+      suggest.enabled = false;
+      reset.enabled = false;
+      reset.whitelist = "";
+    };
+  };
+}
diff --git a/profiles/restrict.nix b/profiles/restrict.nix
new file mode 100644
index 0000000..d751022
--- /dev/null
+++ b/profiles/restrict.nix
@@ -0,0 +1,26 @@
+{ ffLib }: {
+  policies = {
+    DisableProfileImport = true;
+    DisableProfileRefresh = true;
+
+    DisableMasterPasswordCreation = true;
+    DisableFeedbackCommands = true;
+    DisableFirefoxAccounts = true;
+    DisableFormHistory = true;   
+    DisablePasswordReveal = true;
+
+    DontCheckDefaultBrowser = true;
+
+    DisableSecurityBypass = {
+      InvalidCertificate = true;
+      SafeBrowsing = false;
+    };
+
+    ExtensionSettings."*" = {
+      blocked_install_message = "Installation von Erweiterungen ist nicht zugelassen.";
+      install_sources = ["https://addons.mozilla.org/"];
+      installation_mode = "blocked";
+      allowed_types = ["extension"];
+    };
+  };
+}