commit e1e6768957ed37443d522f16558b7c161d5d75f4 Author: Kathy Brade brade@pearlcrescent.com Date: Thu Apr 16 17:07:09 2020 -0400

Bug 32418: Allow updates to be disabled via an enterprise policy.

Restrict the Enterprise Policies mechanism to only consult a policies.json file (avoiding the Windows Registry and macOS's file system attributes).

Add a few disabledByPolicy() checks to the update service to avoid extraneous (and potentially confusing) log messages when updates are disabled by policy.

Sample content for distribution/policies.json: { "policies": { "DisableAppUpdate": true } }

On Linux, avoid reading policies from /etc/firefox/policies/policies.json --- .../enterprisepolicies/EnterprisePoliciesParent.jsm | 14 ++++++++++++-- toolkit/components/enterprisepolicies/moz.build | 3 +++ toolkit/mozapps/update/UpdateService.jsm | 20 ++++++++++++++++++++ 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/toolkit/components/enterprisepolicies/EnterprisePoliciesParent.jsm b/toolkit/components/enterprisepolicies/EnterprisePoliciesParent.jsm index 8b0a5170cbdd..38e2c2b36a24 100644 --- a/toolkit/components/enterprisepolicies/EnterprisePoliciesParent.jsm +++ b/toolkit/components/enterprisepolicies/EnterprisePoliciesParent.jsm @@ -4,6 +4,10 @@

var EXPORTED_SYMBOLS = ["EnterprisePoliciesManager"];

+// To ensure that policies intended for Firefox or another browser will not +// be used, Tor Browser only looks for policies in ${InstallDir}/distribution +#define AVOID_SYSTEM_POLICIES MOZ_PROXY_BYPASS_PROTECTION + const { XPCOMUtils } = ChromeUtils.import( "resource://gre/modules/XPCOMUtils.jsm" ); @@ -13,9 +17,11 @@ const { AppConstants } = ChromeUtils.import( );

XPCOMUtils.defineLazyModuleGetters(this, { +#ifndef AVOID_SYSTEM_POLICIES WindowsGPOParser: "resource://gre/modules/policies/WindowsGPOParser.jsm", macOSPoliciesParser: "resource://gre/modules/policies/macOSPoliciesParser.jsm", +#endif Policies: "resource:///modules/policies/Policies.jsm", JsonSchemaValidator: "resource://gre/modules/components-utils/JsonSchemaValidator.jsm", @@ -137,6 +143,7 @@ EnterprisePoliciesManager.prototype = {

_chooseProvider() { let provider = null; +#ifndef AVOID_SYSTEM_POLICIES if (AppConstants.platform == "win") { provider = new WindowsGPOPoliciesProvider(); } else if (AppConstants.platform == "macosx") { @@ -145,6 +152,7 @@ EnterprisePoliciesManager.prototype = { if (provider && provider.hasPolicies) { return provider; } +#endif

provider = new JSONPoliciesProvider(); if (provider.hasPolicies) { @@ -495,7 +503,7 @@ class JSONPoliciesProvider {

_getConfigurationFile() { let configFile = null; - +#ifndef AVOID_SYSTEM_POLICIES if (AppConstants.platform == "linux") { let systemConfigFile = Cc["@mozilla.org/file/local;1"].createInstance( Ci.nsIFile @@ -508,7 +516,7 @@ class JSONPoliciesProvider { return systemConfigFile; } } - +#endif try { let perUserPath = Services.prefs.getBoolPref(PREF_PER_USER_DIR, false); if (perUserPath) { @@ -589,6 +597,7 @@ class JSONPoliciesProvider { } }

+#ifndef AVOID_SYSTEM_POLICIES class WindowsGPOPoliciesProvider { constructor() { this._policies = null; @@ -654,3 +663,4 @@ class macOSPoliciesProvider { return this._failed; } } +#endif diff --git a/toolkit/components/enterprisepolicies/moz.build b/toolkit/components/enterprisepolicies/moz.build index 09d2046e1bd7..3f685d3fbbd6 100644 --- a/toolkit/components/enterprisepolicies/moz.build +++ b/toolkit/components/enterprisepolicies/moz.build @@ -19,6 +19,9 @@ if CONFIG["MOZ_WIDGET_TOOLKIT"] != "android": EXTRA_JS_MODULES += [ "EnterprisePolicies.jsm", "EnterprisePoliciesContent.jsm", + ] + + EXTRA_PP_JS_MODULES += [ "EnterprisePoliciesParent.jsm", ]

diff --git a/toolkit/mozapps/update/UpdateService.jsm b/toolkit/mozapps/update/UpdateService.jsm index 01da9f2b7292..c6f34df9163b 100644 --- a/toolkit/mozapps/update/UpdateService.jsm +++ b/toolkit/mozapps/update/UpdateService.jsm @@ -2843,6 +2843,10 @@ UpdateService.prototype = { _checkForBackgroundUpdates: function AUS__checkForBackgroundUpdates( isNotify ) { + if (this.disabledByPolicy) { + return; + } + this._isNotify = isNotify;

// Histogram IDs: @@ -3345,6 +3349,14 @@ UpdateService.prototype = { * See nsIUpdateService.idl */ get canApplyUpdates() { + if (this.disabledByPolicy) { + LOG( + "UpdateService.canApplyUpdates - unable to apply updates, " + + "the option has been disabled by the administrator." + ); + return false; + } + return getCanApplyUpdates() && hasUpdateMutex(); },

@@ -3352,6 +3364,14 @@ UpdateService.prototype = { * See nsIUpdateService.idl */ get canStageUpdates() { + if (this.disabledByPolicy) { + LOG( + "UpdateService.canStageUpdates - unable to stage updates, " + + "the option has been disabled by the administrator." + ); + return false; + } + return getCanStageUpdates(); },