From f55a1e2bc3ce62fce15638934c899cfbbf4171b4 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Wed, 25 Sep 2024 03:09:12 +0200
Subject: [PATCH] [proxy,modules] fix integer narrow

---
 .../proxy/modules/dyn-channel-dump/dyn-channel-dump.cpp  | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/server/proxy/modules/dyn-channel-dump/dyn-channel-dump.cpp b/server/proxy/modules/dyn-channel-dump/dyn-channel-dump.cpp
index 85867982a..40fb12f00 100644
--- a/server/proxy/modules/dyn-channel-dump/dyn-channel-dump.cpp
+++ b/server/proxy/modules/dyn-channel-dump/dyn-channel-dump.cpp
@@ -24,6 +24,7 @@
 #include <fstream>
 #include <iostream>
 #include <regex>
+#include <limits>
 #include <utility>
 #include <vector>
 #include <sstream>
@@ -332,7 +333,13 @@ static BOOL dump_dyn_channel_intercept(proxyPlugin* plugin, proxyData* pdata, vo
 			WLog_ERR(TAG, "Could not write to stream");
 			return FALSE;
 		}
-		stream.write(buffer, Stream_Length(data->data));
+		const auto s = Stream_Length(data->data);
+		if (s > std::numeric_limits<std::streamsize>::max())
+		{
+			WLog_ERR(TAG, "Stream length %" PRIuz " exceeds std::streamsize::max", s);
+			return FALSE;
+		}
+		stream.write(buffer, static_cast<std::streamsize>(s));
 		if (stream.fail())
 		{
 			WLog_ERR(TAG, "Could not write to stream");