bool network_to_native(Packet_Head<0x0063> *native, NetPacket_Head<0x0063> network)
{
bool rv = true;
rv &= network_to_native(&native->magic_packet_id, network.magic_packet_id);
rv &= network_to_native(&native->magic_packet_length, network.magic_packet_length);
return rv;
}
RecvResult recv_vpacket(Session *s, Packet_Head<id>& head, std::vector<Packet_Repeat<id>>& repeat)
{
static_assert(id == Packet_Head<id>::PACKET_ID, "Packet_Head<id>::PACKET_ID");
static_assert(headsize == sizeof(NetPacket_Head<id>), "NetPacket_Head<id>");
static_assert(id == Packet_Repeat<id>::PACKET_ID, "Packet_Repeat<id>::PACKET_ID");
static_assert(repeatsize == sizeof(NetPacket_Repeat<id>), "NetPacket_Repeat<id>");
NetPacket_Head<id> net_head;
std::vector<NetPacket_Repeat<id>> net_repeat;
RecvResult rv = net_recv_vpacket(s, net_head, net_repeat);
if (rv == RecvResult::Complete)
{
if (!network_to_native(&head, net_head))
return RecvResult::Error;
assert (head.magic_packet_id == Packet_Head<id>::PACKET_ID);
repeat.resize(net_repeat.size());
for (size_t i = 0; i < net_repeat.size(); ++i)
{
if (!network_to_native(&repeat[i], net_repeat[i]))
return RecvResult::Error;
}
}
return rv;
}
bool network_to_native(Packet_Fixed<0x006a> *native, NetPacket_Fixed<0x006a> network)
{
bool rv = true;
rv &= network_to_native(&native->magic_packet_id, network.magic_packet_id);
rv &= network_to_native(&native->error_code, network.error_code);
rv &= network_to_native(&native->error_message, network.error_message);
return rv;
}
bool network_to_native(Packet_Fixed<0x0064> *native, NetPacket_Fixed<0x0064> network)
{
bool rv = true;
rv &= network_to_native(&native->magic_packet_id, network.magic_packet_id);
rv &= network_to_native(&native->unknown, network.unknown);
rv &= network_to_native(&native->account_name, network.account_name);
rv &= network_to_native(&native->account_pass, network.account_pass);
rv &= network_to_native(&native->version_2_flags, network.version_2_flags);
return rv;
}
RecvResult net_recv_opacket(Session *s, NetPacket_Head<id>& head, bool *has_opt, NetPacket_Option<id>& opt)
{
bool ok = packet_fetch(s, 0, reinterpret_cast<Byte *>(&head), sizeof(NetPacket_Head<id>));
if (ok)
{
Packet_Head<id> nat;
if (!network_to_native(&nat, head))
return RecvResult::Error;
if (packet_avail(s) < nat.magic_packet_length)
return RecvResult::Incomplete;
if (nat.magic_packet_length < sizeof(NetPacket_Head<id>))
return RecvResult::Error;
size_t bytes_repeat = nat.magic_packet_length - sizeof(NetPacket_Head<id>);
if (bytes_repeat % sizeof(NetPacket_Option<id>))
return RecvResult::Error;
size_t has_opt_pls = bytes_repeat / sizeof(NetPacket_Option<id>);
if (has_opt_pls > 1)
return RecvResult::Error;
*has_opt = has_opt_pls;
if (!*has_opt || packet_fetch(s, sizeof(NetPacket_Head<id>), reinterpret_cast<Byte *>(&opt), sizeof(NetPacket_Option<id>)))
{
packet_discard(s, nat.magic_packet_length);
return RecvResult::Complete;
}
return RecvResult::Incomplete;
}
return RecvResult::Incomplete;
}
RecvResult net_recv_vpacket(Session *s, NetPacket_Head<id>& head, std::vector<NetPacket_Repeat<id>>& repeat)
{
bool ok = packet_fetch(s, 0, reinterpret_cast<Byte *>(&head), sizeof(NetPacket_Head<id>));
if (ok)
{
Packet_Head<id> nat;
if (!network_to_native(&nat, head))
return RecvResult::Error;
if (packet_avail(s) < nat.magic_packet_length)
return RecvResult::Incomplete;
if (nat.magic_packet_length < sizeof(NetPacket_Head<id>))
return RecvResult::Error;
size_t bytes_repeat = nat.magic_packet_length - sizeof(NetPacket_Head<id>);
if (bytes_repeat % sizeof(NetPacket_Repeat<id>))
return RecvResult::Error;
repeat.resize(bytes_repeat / sizeof(NetPacket_Repeat<id>));
if (packet_fetch(s, sizeof(NetPacket_Head<id>), reinterpret_cast<Byte *>(repeat.data()), bytes_repeat))
{
packet_discard(s, nat.magic_packet_length);
return RecvResult::Complete;
}
return RecvResult::Incomplete;
}
return RecvResult::Incomplete;
}
friend
bool network_to_native(GmLevel *native, Little16 network)
{
uint16_t tmp;
bool rv = network_to_native(&tmp, network);
native->bits = tmp;
return rv;
}
bool network_to_native(Packet_Head<0x0069> *native, NetPacket_Head<0x0069> network)
{
bool rv = true;
rv &= network_to_native(&native->magic_packet_id, network.magic_packet_id);
rv &= network_to_native(&native->magic_packet_length, network.magic_packet_length);
rv &= network_to_native(&native->login_id1, network.login_id1);
rv &= network_to_native(&native->account_id, network.account_id);
rv &= network_to_native(&native->login_id2, network.login_id2);
rv &= network_to_native(&native->unused, network.unused);
rv &= network_to_native(&native->last_login_string, network.last_login_string);
rv &= network_to_native(&native->unused2, network.unused2);
rv &= network_to_native(&native->sex, network.sex);
return rv;
}
RecvResult recv_opacket(Session *s, Packet_Head<id>& head, bool *has_opt, Packet_Option<id>& opt)
{
static_assert(id == Packet_Head<id>::PACKET_ID, "Packet_Head<id>::PACKET_ID");
static_assert(headsize == sizeof(NetPacket_Head<id>), "NetPacket_Head<id>");
static_assert(id == Packet_Option<id>::PACKET_ID, "Packet_Option<id>::PACKET_ID");
static_assert(optsize == sizeof(NetPacket_Option<id>), "NetPacket_Option<id>");
NetPacket_Head<id> net_head;
NetPacket_Option<id> net_opt;
RecvResult rv = net_recv_opacket(s, net_head, has_opt, net_opt);
if (rv == RecvResult::Complete)
{
if (!network_to_native(&head, net_head))
return RecvResult::Error;
assert (head.magic_packet_id == Packet_Head<id>::PACKET_ID);
if (*has_opt)
{
if (!network_to_native(&opt, net_opt))
return RecvResult::Error;
}
}
return rv;
}
RecvResult recv_fpacket(Session *s, Packet_Fixed<id>& fixed)
{
static_assert(id == Packet_Fixed<id>::PACKET_ID, "Packet_Fixed<id>::PACKET_ID");
static_assert(size == sizeof(NetPacket_Fixed<id>), "NetPacket_Fixed<id>");
NetPacket_Fixed<id> net_fixed;
RecvResult rv = net_recv_fpacket(s, net_fixed);
if (rv == RecvResult::Complete)
{
if (!network_to_native(&fixed, net_fixed))
return RecvResult::Error;
assert (fixed.magic_packet_id == Packet_Fixed<id>::PACKET_ID);
}
return rv;
}
bool network_to_native(Packet_Repeat<0x0069> *native, NetPacket_Repeat<0x0069> network)
{
bool rv = true;
rv &= network_to_native(&native->ip, network.ip);
rv &= network_to_native(&native->port, network.port);
rv &= network_to_native(&native->server_name, network.server_name);
rv &= network_to_native(&native->users, network.users);
rv &= network_to_native(&native->maintenance, network.maintenance);
rv &= network_to_native(&native->is_new, network.is_new);
return rv;
}
RecvResult recv_vpacket(Session *s, Packet_Head<id>& head, AString& repeat)
{
static_assert(id == Packet_Head<id>::PACKET_ID, "Packet_Head<id>::PACKET_ID");
static_assert(headsize == sizeof(NetPacket_Head<id>), "NetPacket_Head<id>");
static_assert(id == Packet_Repeat<id>::PACKET_ID, "Packet_Repeat<id>::PACKET_ID");
static_assert(repeatsize == sizeof(NetPacket_Repeat<id>), "NetPacket_Repeat<id>");
static_assert(repeatsize == 1, "repeatsize");
NetPacket_Head<id> net_head;
std::vector<NetPacket_Repeat<id>> net_repeat;
RecvResult rv = net_recv_vpacket(s, net_head, net_repeat);
assert (head.magic_packet_id == Packet_Head<id>::PACKET_ID);
if (rv == RecvResult::Complete)
{
if (!network_to_native(&head, net_head))
return RecvResult::Error;
// reinterpret_cast is needed to correctly handle an empty vector
const char *begin = sign_cast<const char *>(net_repeat.data());
const char *end = begin + net_repeat.size();
end = std::find(begin, end, '\0');
repeat = XString(begin, end, nullptr);
}
return rv;
}
RecvResult recv_ppacket(Session *s, Packet_Payload<id>& payload)
{
static_assert(id == Packet_Payload<id>::PACKET_ID, "Packet_Payload<id>::PACKET_ID");
NetPacket_Payload<id> net_payload;
RecvResult rv = net_recv_ppacket(s, net_payload);
if (rv == RecvResult::Complete)
{
if (!network_to_native(&payload, net_payload))
return RecvResult::Error;
assert (payload.magic_packet_id == Packet_Payload<id>::PACKET_ID);
if (id == 0x8000)
{
// 0x8000 is special
if (packet_avail(s) < payload.magic_packet_length)
return RecvResult::Incomplete;
payload.magic_packet_length = 4;
return RecvResult::Complete;
}
if (payload.magic_packet_length != sizeof(net_payload))
return RecvResult::Error;
}
return rv;
}
friend
bool network_to_native(GmLevel *native, Little32 network)
{
return network_to_native(&native->bits, network);
}
bool network_to_native(Packet_Repeat<0x0063> *native, NetPacket_Repeat<0x0063> network)
{
bool rv = true;
rv &= network_to_native(&native->c, network.c);
return rv;
}
