From 5dd1d00a035fb33638827bcd60631a9429022c50 Mon Sep 17 00:00:00 2001
From: derrod <dennis@obsproject.com>
Date: Mon, 27 Feb 2023 22:07:48 +0100
Subject: [PATCH] UI: Add mutex to reading public key file

---
 UI/update/shared-update.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/UI/update/shared-update.cpp b/UI/update/shared-update.cpp
index 702a1660f..ad8f778a1 100644
--- a/UI/update/shared-update.cpp
+++ b/UI/update/shared-update.cpp
@@ -176,12 +176,15 @@ static void LoadPublicKey(std::string &pubkey)
 static bool CheckDataSignature(const char *name, const std::string &data,
 			       const std::string &hexSig)
 try {
+	static std::mutex pubkey_mutex;
+	static std::string obsPubKey;
+
 	if (hexSig.empty() || hexSig.length() > 0xFFFF ||
 	    (hexSig.length() & 1) != 0)
 		throw strprintf("Missing or invalid signature for %s: %s", name,
 				hexSig.c_str());
 
-	static std::string obsPubKey;
+	std::scoped_lock lock(pubkey_mutex);
 	if (obsPubKey.empty())
 		LoadPublicKey(obsPubKey);