From e79525ac8b23e90dc3748e5748f719eea7998214 Mon Sep 17 00:00:00 2001
From: Pier Angelo Vendrame <pierov@torproject.org>
Date: Tue, 26 Mar 2024 18:04:32 +0100
Subject: [PATCH] Bug 42472: Spoof timezone in XSLT.
---
dom/xslt/xslt/txEXSLTFunctions.cpp | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/dom/xslt/xslt/txEXSLTFunctions.cpp b/dom/xslt/xslt/txEXSLTFunctions.cpp
index d4882d0b13cf5..dbdc06296ccd0 100644
--- a/dom/xslt/xslt/txEXSLTFunctions.cpp
+++ b/dom/xslt/xslt/txEXSLTFunctions.cpp
@@ -591,7 +591,14 @@ nsresult txEXSLTFunctionCall::evaluate(txIEvalContext* aContext,
// http://exslt.org/date/functions/date-time/
PRExplodedTime prtime;
- PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &prtime);
+ PR_ExplodeTime(
+ PR_Now(),
+ // We are not allowed to access the Document when evaluating this, so
+ // fall back to the general function.
+ nsContentUtils::ShouldResistFingerprinting(RFPTarget::Unknown)
+ ? PR_GMTParameters
+ : PR_LocalTimeParameters,
+ &prtime);
int32_t offset =
(prtime.tm_params.tp_gmt_offset + prtime.tm_params.tp_dst_offset) /
--
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