From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 21 Sep 2019 15:23:01 +0000 (+0300)
Subject: Prevent serializing packets without an ID
X-Git-Url: http://git.tdb.fi/?p=libs%2Fnet.git;a=commitdiff_plain;h=e6b880a3764447fff13b9fd0aff8e53a02add688

Prevent serializing packets without an ID

An attempt at such may arise from sending a structure intended to be used
as part of other packets, but not a packet on its own.
---

diff --git a/source/net/protocol.h b/source/net/protocol.h
index 05ea60e..256d978 100644
--- a/source/net/protocol.h
+++ b/source/net/protocol.h
@@ -294,6 +294,8 @@ template<typename P>
 unsigned Protocol::serialize(const P &pkt, char *buf, unsigned size) const
 {
 	const PacketTypeDef<P> &pdef = get_packet_by_class<P>();
+	if(!pdef.get_id())
+		throw std::invalid_argument("no packet id");
 	char *ptr = pdef.serialize(pkt, buf+4, buf+size);
 	size = ptr-buf;
 	header_def.serialize(PacketHeader(pdef.get_id(), size), buf, buf+4);