From 5014c0ed2160393fb787b585127bce8f27fda722 Mon Sep 17 00:00:00 2001
From: tilpner
Date: Fri, 6 Mar 2020 16:05:01 +0100
Subject: Separate policy into smaller modules

---
 nix/lib.nix | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

(limited to 'nix/lib.nix')

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" ''
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