tor-browser

commit 0431514d8aedcec4395c6f25006d64cf7a6ce415
parent 95a16b0b62a7ffc462a486c62e21ba6b6850de2b
Author: Pier Angelo Vendrame <pierov@torproject.org>
Date:   Wed, 18 May 2022 19:22:37 +0200

BB 40309: Avoid using regional OS locales

Avoid regional OS locales if the pref
`intl.regional_prefs.use_os_locales` is false but RFP is enabled.

Diffstat:
M
intl/locale/LocaleService.cpp
 | 
10
++++++++++

1 file changed, 10 insertions(+), 0 deletions(-)
diff --git a/intl/locale/LocaleService.cpp b/intl/locale/LocaleService.cpp
@@ -490,6 +490,16 @@ LocaleService::GetAppLocaleAsBCP47(nsACString& aRetVal) {
 
 NS_IMETHODIMP
 LocaleService::GetRegionalPrefsLocales(nsTArray<nsCString>& aRetVal) {
+  // tor-browser#42349, #42771: We cannot use JSLocale because it is spoof
+  // English. So, we use another target for now.
+  if (nsContentUtils::ShouldResistFingerprinting(
+          "This is probably a patch that should be refined. But to get the "
+          "build going, we just keep applying this generic check.",
+          RFPTarget::JSDateTimeUTC)) {
+    GetAppLocalesAsBCP47(aRetVal);
+    return NS_OK;
+  }
+
   bool useOSLocales =
       Preferences::GetBool("intl.regional_prefs.use_os_locales", false);