From 66336d1b6529b67516e5b631cafdaacdef8afac4 Mon Sep 17 00:00:00 2001
From: kkapsner <github@mail.kkapsner.de>
Date: Wed, 3 Jan 2018 10:59:56 +0100
Subject: [PATCH] prevent possible double faking

---
 lib/intercept.js | 10 ++++++++++
 releaseNotes.txt |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/intercept.js b/lib/intercept.js
index 627a6f6..5629740 100644
--- a/lib/intercept.js
+++ b/lib/intercept.js
@@ -159,6 +159,7 @@
 		}
 	};
 
+	let extensionID = browser.extension.getURL("");
 	scope.intercept = function intercept({subject: window}, {check, checkStack, ask, notify, prefs}){
 		var siteStatus = check({url: getURL(window)});
 		logging.verbose("status for page", window, siteStatus);
@@ -189,6 +190,15 @@
 											return undef;
 										}
 										var error = new Error();
+										try {
+											// return original if the extension itself requested the function
+											if (error.stack.split("\n", 3)[1].split("@", 2)[1].startsWith(extensionID)){
+												return original;
+											}
+										}
+										catch (e) {
+											// stack had an unknown form
+										}
 										if (checkStack(error.stack)){
 											return original;
 										}
diff --git a/releaseNotes.txt b/releaseNotes.txt
index 3523637..8971627 100644
--- a/releaseNotes.txt
+++ b/releaseNotes.txt
@@ -6,7 +6,7 @@ Version 0.4.5:
 		-
 	
 	fixes:
-		-
+		- prevent possible double faking
 
 Version 0.4.4b:
 	known issues: