From 5006ce82609b2260f191b132f2dabcfdb06d6e20 Mon Sep 17 00:00:00 2001
From: kwolekr <kwolekr@minetest.net>
Date: Mon, 13 Jul 2015 23:29:29 -0400
Subject: [PATCH] Remove raw message output on AOM deserialization failure

Improve TOCLIENT_ACTIVE_OBJECT_MESSAGES robustness for handling invalid data
---
 src/environment.cpp                 | 29 ++++++++++++-----------------
 src/network/clientpackethandler.cpp | 28 +++++++++-------------------
 2 files changed, 21 insertions(+), 36 deletions(-)

diff --git a/src/environment.cpp b/src/environment.cpp
index 09db886a8..5affda6fa 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -2535,28 +2535,23 @@ void ClientEnvironment::removeActiveObject(u16 id)
 	m_active_objects.erase(id);
 }
 
-void ClientEnvironment::processActiveObjectMessage(u16 id,
-		const std::string &data)
+void ClientEnvironment::processActiveObjectMessage(u16 id, const std::string &data)
 {
-	ClientActiveObject* obj = getActiveObject(id);
-	if(obj == NULL)
-	{
-		infostream<<"ClientEnvironment::processActiveObjectMessage():"
-				<<" got message for id="<<id<<", which doesn't exist."
-				<<std::endl;
+	ClientActiveObject *obj = getActiveObject(id);
+	if (obj == NULL) {
+		infostream << "ClientEnvironment::processActiveObjectMessage():"
+			<< " got message for id=" << id << ", which doesn't exist."
+			<< std::endl;
 		return;
 	}
-	try
-	{
+
+	try {
 		obj->processMessage(data);
-	}
-	catch(SerializationError &e)
-	{
+	} catch (SerializationError &e) {
 		errorstream<<"ClientEnvironment::processActiveObjectMessage():"
-				<<" id="<<id<<" type="<<obj->getType()
-				<<" SerializationError in processMessage(),"
-				<<" message="<<serializeJsonString(data)
-				<<std::endl;
+			<< " id=" << id << " type=" << obj->getType()
+			<< " SerializationError in processMessage(): " << e.what()
+			<< std::endl;
 	}
 }
 
diff --git a/src/network/clientpackethandler.cpp b/src/network/clientpackethandler.cpp
index 4cebb2184..15d5456fa 100644
--- a/src/network/clientpackethandler.cpp
+++ b/src/network/clientpackethandler.cpp
@@ -449,33 +449,23 @@ void Client::handleCommand_ActiveObjectMessages(NetworkPacket* pkt)
 			string message
 		}
 	*/
-	char buf[6];
-	// Get all data except the command number
 	std::string datastring(pkt->getString(0), pkt->getSize());
-	// Throw them in an istringstream
 	std::istringstream is(datastring, std::ios_base::binary);
 
 	try {
-		while(is.eof() == false) {
-			is.read(buf, 2);
-			u16 id = readU16((u8*)buf);
-			if (is.eof())
+		while (is.good()) {
+			u16 id = readU16(is);
+			if (!is.good())
 				break;
-			is.read(buf, 2);
-			size_t message_size = readU16((u8*)buf);
-			std::string message;
-			message.reserve(message_size);
-			for (u32 i = 0; i < message_size; i++) {
-				is.read(buf, 1);
-				message.append(buf, 1);
-			}
+
+			std::string message = deSerializeString(is);
+
 			// Pass on to the environment
 			m_env.processActiveObjectMessage(id, message);
 		}
-	// Packet could be unreliable then ignore it
-	} catch (PacketError &e) {
-		infostream << "handleCommand_ActiveObjectMessages: " << e.what()
-					<< ". The packet is unreliable, ignoring" << std::endl;
+	} catch (SerializationError &e) {
+		errorstream << "Client::handleCommand_ActiveObjectMessages: "
+			<< "caught SerializationError: " << e.what() << std::endl;
 	}
 }
 
-- 
2.25.1