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96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
#include <components/openmw-mp/NetworkMessages.hpp>
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#include <components/openmw-mp/Log.hpp>
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#include "PacketPreInit.hpp"
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mwmp::PacketPreInit::PacketPreInit(RakNet::RakPeerInterface *peer) : BasePacket(peer)
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{
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checksums = nullptr;
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packetID = ID_GAME_PREINIT;
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}
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void mwmp::PacketPreInit::Packet(RakNet::BitStream *bs, bool send)
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{
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BasePacket::Packet(bs, send);
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const RakNet::BitSize_t packetSize = bs->GetNumberOfBytesUsed();
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uint32_t expectedPacketSize = BasePacket::headerSize() + sizeof(uint32_t);
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if (!send && expectedPacketSize > packetSize)
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{
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LOG_MESSAGE(Log::LOG_ERROR, "Wrong packet size %d when expected %d", packetSize, expectedPacketSize);
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packetValid = false;
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return;
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}
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uint32_t numberOfChecksums = checksums->size();
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RW(numberOfChecksums, send);
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if (numberOfChecksums > maxPlugins)
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{
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LOG_MESSAGE(Log::LOG_ERROR, "Wrong number of checksums %d when maximum is %d", numberOfChecksums, maxPlugins);
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packetValid = false;
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return;
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}
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struct NAS
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{
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uint32_t hashN;
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uint32_t strSize;
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};
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std::vector<NAS> NumberOfHashesAndStrSizes(numberOfChecksums);
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PluginContainer::const_iterator checksumIt = checksums->begin();
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for (auto &&nas : NumberOfHashesAndStrSizes)
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{
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if (send)
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{
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nas.strSize = checksumIt->first.size();
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nas.hashN = checksumIt++->second.size();
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}
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RW(nas, send);
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expectedPacketSize += nas.strSize + nas.hashN;
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if (nas.strSize > pluginNameMaxLength)
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LOG_MESSAGE(Log::LOG_ERROR, "Wrong string length %d when maximum length is %d",
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nas.strSize,
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pluginNameMaxLength);
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else if (nas.hashN > maxHashes)
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LOG_MESSAGE(Log::LOG_ERROR, "Wrong number of hashes %d when maximum is %d", nas.hashN, maxHashes);
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else
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continue;
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packetValid = false;
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return;
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}
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if (!send && expectedPacketSize == packetSize) // server accepted plugin list via sending "empty" packet
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return;
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if (!send && expectedPacketSize > packetSize)
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{
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LOG_MESSAGE(Log::LOG_ERROR, "Wrong packet size %d when expected %d", packetSize, expectedPacketSize);
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packetValid = false;
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return;
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}
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checksums->resize(numberOfChecksums);
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auto numberOfHashesIt = NumberOfHashesAndStrSizes.cbegin();
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for (auto &&checksum : *checksums)
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{
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RW(checksum.first, send, false, numberOfHashesIt->strSize);
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checksum.second.resize(numberOfHashesIt->hashN);
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for (auto &&hash : checksum.second)
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RW(hash, send);
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++numberOfHashesIt;
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}
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}
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void mwmp::PacketPreInit::setChecksums(mwmp::PacketPreInit::PluginContainer *checksums)
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{
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this->checksums = checksums;
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}
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