void
RpcPdu::fragLenSet ()
{
TRACE_CALL;
int len = hdrLen () + payloadLen ();
m_header.request.hdr.fragLen = len;
if (packetType () == RPC_CN_PKT_REQUEST)
m_header.request.allocHint = len;
else if (packetType () == RPC_CN_PKT_RESPONSE)
m_header.response.allocHint = len;
}
void Packet::decodePacket() {
if (packetType() == PACKET_ERROR) {
char message[sizeof(packet.data.error.message)+1];
memset(message, 0, sizeof(message));
strncpy(message, (const char *)packet.data.error.message, sizeof(message));
errorString = message;
errorString.remove("\n");
}
else
errorString = "";
if (packetType() == PACKET_COMMAND) {
char cmd[sizeof(packet.data.command.cmd)+1];
memset(cmd, 0, sizeof(cmd));
memcpy(cmd, packet.data.command.cmd, sizeof(packet.data.command.cmd));
commandNameString = cmd;
commandNameString.remove("\n");
}
else
commandNameString = "";
if (packetType() == PACKET_SD_CID) {
cardCID.sprintf("%02x %02x %02x %02x %02x %02x %02x %02x",
packet.data.cid.cid[0],
packet.data.cid.cid[1],
packet.data.cid.cid[2],
packet.data.cid.cid[3],
packet.data.cid.cid[4],
packet.data.cid.cid[5],
packet.data.cid.cid[6],
packet.data.cid.cid[7]
);
}
else
cardCID = "";
if (packetType() == PACKET_SD_CSD) {
cardCSD.sprintf("%02x %02x %02x %02x %02x %02x %02x %02x",
packet.data.csd.csd[0],
packet.data.csd.csd[1],
packet.data.csd.csd[2],
packet.data.csd.csd[3],
packet.data.csd.csd[4],
packet.data.csd.csd[5],
packet.data.csd.csd[6],
packet.data.csd.csd[7]
);
}
else
cardCSD = "";
}
// Try to get a single packet from a stream of data.
// Returns 0 if the packet was successfully processed, or
// -1 on an error, in which case the state is unchanged.
static ssize_t
dataReceivedSingle(NetConnection *conn, const uint8 *data,
size_t dataLen) {
uint32 packetLen;
PacketType type;
int result;
if (dataLen < sizeof (PacketHeader)) {
// Incomplete packet. We'll have to wait for the rest.
return 0;
}
packetLen = packetLength((const Packet *) data);
type = packetType((const Packet *) data);
if (!validPacketType(type)) {
log_add(log_Warning, "Packet with invalid type %d received.\n", type);
errno = EBADMSG;
return -1;
}
if (packetLen < packetTypeData[type].len) {
// Bad len field of packet.
log_add(log_Warning, "Packet with bad length field received (type="
"%s, lenfield=%d.\n", packetTypeData[type].name,
packetLen);
errno = EBADMSG;
return -1;
}
if (dataLen < packetLen) {
// Incomplete packet. We'll have to wait for the rest.
return 0;
}
#ifdef NETPLAY_STATISTICS
NetConnection_getStatistics(conn)->packetsReceived++;
NetConnection_getStatistics(conn)->packetTypeReceived[type]++;
#endif
#ifdef NETPLAY_DEBUG
if (type != PACKET_BATTLEINPUT && type != PACKET_CHECKSUM) {
// Reporting BattleInput and Checksum would get so spammy that it
// would slow down the battle.
log_add(log_Debug, "NETPLAY: [%d] <== Received packet of type %s.\n",
NetConnection_getPlayerNr(conn), packetTypeData[type].name);
}
#endif
result = packetTypeData[type].handler(conn, data);
if (result == -1) {
// An error occured. errno is set by the handler.
return -1;
}
return packetLen;
}
void
queuePacket(NetConnection *conn, Packet *packet, bool urgent) {
PacketQueue *queue;
PacketQueueLink *link;
assert(NetConnection_isConnected(conn));
assert(!urgent || !packetTypeData[packetType(packet)].inTurn);
// Urgent packets should never stall the connection.
queue = &conn->queue;
link = PacketQueueLink_alloc();
link->packet = packet;
link->next = NULL;
if (urgent) {
*queue->endUrgent = link;
queue->endUrgent = &link->next;
} else {
*queue->end = link;
queue->end = &link->next;
}
queue->size++;
// XXX: perhaps check that this queue isn't getting too large?
#ifdef NETPLAY_DEBUG
if (packetType(packet) != PACKET_BATTLEINPUT &&
packetType(packet) != PACKET_CHECKSUM) {
// Reporting BattleInput or Checksum would get so spammy that it
// would slow down the battle.
log_add(log_Debug, "NETPLAY: [%d] ==> Queueing packet of type %s.\n",
NetConnection_getPlayerNr(conn),
packetTypeData[packetType(packet)].name);
}
#endif
}
// If an error occurs during sending, we leave the unsent packets in
// the queue, and let the caller decide what to do with them.
// This function may return -1 with errno EAGAIN if we're waiting for
// the other party to act first.
static int
flushPacketQueueLinks(NetConnection *conn, PacketQueueLink **first) {
PacketQueueLink *link;
PacketQueueLink *next;
PacketQueue *queue = &conn->queue;
for (link = *first; link != NULL; link = next) {
if (packetTypeData[packetType(link->packet)].inTurn &&
(!conn->stateFlags.myTurn || conn->stateFlags.endingTurn)) {
// This packet requires it to be 'our turn', and it isn't,
// or we've already told the other party we wanted to end our
// turn.
// This should never happen in the urgent queue.
assert(first != &queue->firstUrgent);
if (!conn->stateFlags.myTurn && !conn->stateFlags.endingTurn) {
conn->stateFlags.endingTurn = true;
if (sendEndTurnDirect(conn) == -1) {
// errno is set
*first = link;
return -1;
}
}
*first = link;
errno = EAGAIN;
// We need to wait for the reply to the turn change.
return -1;
}
if (sendPacket(conn, link->packet) == -1) {
// Errno is set.
*first = link;
return -1;
}
next = link->next;
Packet_delete(link->packet);
PacketQueueLink_delete(link);
queue->size--;
}
*first = link;
return 0;
}
uint8_t Packet::resetVersion() const {
if (packetType() != PACKET_RESET)
return 0;
return packet.data.reset.version;
}
uint8_t Packet::sdRegister() const {
if (packetType() != PACKET_SD_CMD_ARG)
return 0;
return packet.data.sd_cmd_arg.reg;
}
//-----------------------------------------------------------------------------
CCSDS::PACKET::TCpacket::TCpacket()
//-----------------------------------------------------------------------------
{
packetType(TC_PACKET_TYPE);
}
uint8_t Packet::nandControl() const {
if (packetType() != PACKET_NAND_CYCLE)
return 0;
return packet.data.nand_cycle.control;
}
bool
RpcPdu::isFault () const
{
return (packetType () == RPC_CN_PKT_FAULT);
}
uint8_t Packet::nandData() const {
if (packetType() != PACKET_NAND_CYCLE)
return 0;
return nand_unscramble_byte(packet.data.nand_cycle.data);
}
bool
RpcPdu::isBindAck () const
{
return (packetType () == RPC_CN_PKT_BIND_ACK);
}
bool
RpcPdu::isAuth3 () const
{
return (packetType () == RPC_CN_PKT_AUTH3);
}
bool
RpcPdu::isRequest () const
{
return (packetType () == RPC_CN_PKT_REQUEST);
}
uint32_t Packet::errorSubsystem() const {
if (packetType() != PACKET_ERROR)
return 0;
return packet.data.error.subsystem;
}
uint32_t Packet::errorArgument() const {
if (packetType() != PACKET_ERROR)
return 0;
return _ntohs(packet.data.error.arg);
}
uint32_t Packet::errorCode() const {
if (packetType() != PACKET_ERROR)
return 0;
return packet.data.error.code;
}
uint16_t Packet::nandUnknown() const {
if (packetType() != PACKET_NAND_CYCLE)
return 0;
return _ntohs(packet.data.nand_cycle.unknown);
}
bool
RpcPdu::isBind () const
{
return ((packetType () == RPC_CN_PKT_BIND) ||
(packetType () == RPC_CN_PKT_ALTER_CONTEXT));
}
uint8_t Packet::sdValue() const {
if (packetType() != PACKET_SD_CMD_ARG)
return 0;
return packet.data.sd_cmd_arg.val;
}
bool
RpcPdu::isBindNak () const
{
return (packetType () == RPC_CN_PKT_BIND_NAK);
}
uint8_t Packet::commandState() const {
if (packetType() != PACKET_COMMAND)
return 0;
return packet.data.command.start_stop;
}
bool
RpcPdu::isResponse () const
{
return (packetType () == RPC_CN_PKT_RESPONSE);
}
uint32_t Packet::commandArg() const {
if (packetType() != PACKET_COMMAND)
return 0;
return _ntohl(packet.data.command.arg);
}
bool
RpcPdu::isAlterContextResp () const
{
return (packetType () == RPC_CN_PKT_ALTER_CONTEXT_RESP);
}
uint8_t Packet::helloVersion() const {
if (packetType() != PACKET_HELLO)
return 0;
return packet.data.hello.version;
}
//-----------------------------------------------------------------------------
CCSDS::PACKET::TMpacket::TMpacket()
//-----------------------------------------------------------------------------
{
packetType(TM_PACKET_TYPE);
}
uint8_t Packet::sdResponse() const {
if (packetType() != PACKET_SD_RESPONSE)
return 0;
return packet.data.response.byte;
}
//-----------------------------------------------------------------------------
CCSDS::PACKET::TCpacket::TCpacket(size_t p_bufferSize):
CCSDS::PACKET::Packet::Packet(p_bufferSize)
//-----------------------------------------------------------------------------
{
packetType(TC_PACKET_TYPE);
}
uint8_t Packet::bufferDrainEvent() const {
if (packetType() != PACKET_BUFFER_DRAIN)
return 0;
return packet.data.buffer_drain.start_stop;
}
