fix slow code, add bounds checks

Tested that players with valid names up to the usual 33 character max are still added to the player container
Tested that you can still team with <= 4 players on a team
Tested that chat server no longer crashes with a bad memberSize variable
asserted that InsertPlayer is indeed much faster now and is no longer a slow point of ChatServer

dChatServer/PlayerContainer.cpp

@@ -36,16 +36,19 @@ void PlayerContainer::InsertPlayer(Packet* packet) {
 	data.playerID = playerId;
 
 	uint32_t len;
-	inStream.Read<uint32_t>(len);
+	if (!inStream.Read<uint32_t>(len)) return;
 
-	for (int i = 0; i < len; i++) {
-		char character; inStream.Read<char>(character);
-		data.playerName += character;
+	if (len > 33) {
+		LOG("Received a really long player name, probably a fake packet %i.", len);
+		return;
 	}
 
-	inStream.Read(data.zoneID);
-	inStream.Read(data.muteExpire);
-	inStream.Read(data.gmLevel);
+	data.playerName.resize(len);
+	inStream.ReadAlignedBytes(reinterpret_cast<unsigned char*>(data.playerName.data()), len);
+
+	if (!inStream.Read(data.zoneID)) return;
+	if (!inStream.Read(data.muteExpire)) return;
+	if (!inStream.Read(data.gmLevel)) return;
 	data.sysAddr = packet->systemAddress;
 
 	m_Names[data.playerID] = GeneralUtils::UTF8ToUTF16(data.playerName);
@@ -122,6 +125,11 @@ void PlayerContainer::CreateTeamServer(Packet* packet) {
 	size_t membersSize = 0;
 	inStream.Read(membersSize);
 
+	if (membersSize >= 4) {
+		LOG("Tried to create a team with more than 4 players");
+		return;
+	}
+
 	std::vector<LWOOBJID> members;
 
 	members.reserve(membersSize);