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Fix UB in NetworkPacket class

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This commit is contained in:
sfan5 2023-09-22 21:30:16 +02:00
parent 5109fa7eda
commit d113636a43
1 changed files with 4 additions and 2 deletions
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6
src/network/networkpacket.cpp
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@ -63,7 +63,8 @@ void NetworkPacket::putRawPacket(const u8 *data, u32 datasize, session_t peer_id
// split command and datas // split command and datas
m_command = readU16(&data[0]); m_command = readU16(&data[0]);
memcpy(m_data.data(), &data[2], m_datasize); if (m_datasize > 0)
memcpy(m_data.data(), &data[2], m_datasize);
} }
void NetworkPacket::clear() void NetworkPacket::clear()
@ -553,7 +554,8 @@ Buffer<u8> NetworkPacket::oldForgePacket()
{ {
Buffer<u8> sb(m_datasize + 2); Buffer<u8> sb(m_datasize + 2);
writeU16(&sb[0], m_command); writeU16(&sb[0], m_command);
memcpy(&sb[2], m_data.data(), m_datasize); if (m_datasize > 0)
memcpy(&sb[2], m_data.data(), m_datasize);
return sb; return sb;
} }