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Remove raw message output on AOM deserialization failure

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Improve TOCLIENT_ACTIVE_OBJECT_MESSAGES robustness for handling invalid data
This commit is contained in:
kwolekr 2015-07-13 23:29:29 -04:00
parent 6f07f79c2f
commit 5006ce8260
2 changed files with 21 additions and 36 deletions
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29
src/environment.cpp
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@ -2535,28 +2535,23 @@ void ClientEnvironment::removeActiveObject(u16 id)
m_active_objects.erase(id); m_active_objects.erase(id);
} }
void ClientEnvironment::processActiveObjectMessage(u16 id, void ClientEnvironment::processActiveObjectMessage(u16 id, const std::string &data)
const std::string &data)
{ {
ClientActiveObject* obj = getActiveObject(id); ClientActiveObject *obj = getActiveObject(id);
if(obj == NULL) if (obj == NULL) {
{ infostream << "ClientEnvironment::processActiveObjectMessage():"
infostream<<"ClientEnvironment::processActiveObjectMessage():" << " got message for id=" << id << ", which doesn't exist."
<<" got message for id="<<id<<", which doesn't exist." << std::endl;
<<std::endl;
return; return;
} }
try
{ try {
obj->processMessage(data); obj->processMessage(data);
} } catch (SerializationError &e) {
catch(SerializationError &e)
{
errorstream<<"ClientEnvironment::processActiveObjectMessage():" errorstream<<"ClientEnvironment::processActiveObjectMessage():"
<<" id="<<id<<" type="<<obj->getType() << " id=" << id << " type=" << obj->getType()
<<" SerializationError in processMessage()," << " SerializationError in processMessage(): " << e.what()
<<" message="<<serializeJsonString(data) << std::endl;
<<std::endl;
} }
} }

28
src/network/clientpackethandler.cpp
View File

@ -449,33 +449,23 @@ void Client::handleCommand_ActiveObjectMessages(NetworkPacket* pkt)
string message string message
} }
*/ */
char buf[6];
// Get all data except the command number
std::string datastring(pkt->getString(0), pkt->getSize()); std::string datastring(pkt->getString(0), pkt->getSize());
// Throw them in an istringstream
std::istringstream is(datastring, std::ios_base::binary); std::istringstream is(datastring, std::ios_base::binary);
try { try {
while(is.eof() == false) { while (is.good()) {
is.read(buf, 2); u16 id = readU16(is);
u16 id = readU16((u8*)buf); if (!is.good())
if (is.eof())
break; break;
is.read(buf, 2);
size_t message_size = readU16((u8*)buf); std::string message = deSerializeString(is);
std::string message;
message.reserve(message_size);
for (u32 i = 0; i < message_size; i++) {
is.read(buf, 1);
message.append(buf, 1);
}
// Pass on to the environment // Pass on to the environment
m_env.processActiveObjectMessage(id, message); m_env.processActiveObjectMessage(id, message);
} }
// Packet could be unreliable then ignore it } catch (SerializationError &e) {
} catch (PacketError &e) { errorstream << "Client::handleCommand_ActiveObjectMessages: "
infostream << "handleCommand_ActiveObjectMessages: " << e.what() << "caught SerializationError: " << e.what() << std::endl;
<< ". The packet is unreliable, ignoring" << std::endl;
} }
} }