int TCPLow_GetPacket(TCPINSTANCE* tcp,void* bufptr,ULONG* pLen,TCPPEER* addr)
{
// this method reads a packet and returns the
// size of the data read and sets up the senders
// address for the status routine
unsigned char recvBuf[sizeof(InetAddress) + udpMaxRawData + 1];
InetAddress* srcAddr;
unsigned long theSize = udpMaxRawData;
Boolean gotPacket;
extern otq_t* gInQueue;
gotPacket = otq_get(gInQueue, recvBuf, &theSize);
if (gotPacket) {
theSize -= sizeof(InetAddress);
memcpy(bufptr, recvBuf + sizeof(InetAddress), theSize);
srcAddr = (InetAddress*) recvBuf;
addr->addr = srcAddr->fHost;
addr->port = srcAddr->fPort;
*pLen = theSize;
} else
return TCP_RES_EMPTY;
return TCP_RES_OK;
}
int atalk_ddp_recv( unsigned handle, void *buf, unsigned len,
unsigned timeout, unsigned char flags,
unsigned *ttltos, unsigned *id ) {
// this method reads a packet and returns the
// size of the data read and sets up the senders
// address for the status routine
unsigned char recvBuf[sizeof(DDPAddress) + ddpMaxRawData + 1];
DDPAddress* srcAddress;
unsigned long theSize = ddpMaxRawData;
Boolean gotPacket;
extern otq_t* gInQueue;
gotPacket = otq_get(gInQueue, recvBuf, &theSize);
if (gotPacket) {
// there is a new packet, deal with it
theSize -= sizeof(DDPAddress);
memcpy(buf, recvBuf + sizeof(DDPAddress), theSize);
// save the senders address
srcAddress = (DDPAddress*) recvBuf;
memcpy(&gSessionInfo.ip_dst, srcAddress, sizeof(DDPAddress));
} else {
// there was no packet to read
theSize = -1;
}
return theSize;
}
int tcpabi_udp_recv( unsigned handle, void *buf, unsigned len,
unsigned timeout, unsigned char flags,
unsigned *ttltos, unsigned *id ) {
// this method reads a packet and returns the
// size of the data read and sets up the senders
// address for the status routine
unsigned char recvBuf[sizeof(InetAddress) + udpMaxRawData + 1];
AddressListStruct* addressList;
InetAddress* srcAddress;
unsigned long theSize = udpMaxRawData;
Boolean gotPacket;
extern otq_t* gInQueue;
gotPacket = otq_get(gInQueue, recvBuf, &theSize);
if (gotPacket) {
// check to see if this is an address list packet. If it is, the transport handles
// it and returns nothing to the outside world
addressList = (AddressListStruct*) (recvBuf + sizeof(InetAddress));
if ( addressList->packetType == gAddressList.packetType) {
AddAddressListToList(&(addressList->addressList[0]), addressList->addressCount);
// we didn't get a packet that the application needs to worry about
theSize = -1;
} else {
// there is a new packet, deal with it
theSize -= sizeof(InetAddress);
memcpy(buf, recvBuf + sizeof(InetAddress), theSize);
// save the senders address
srcAddress = (InetAddress*) recvBuf;
gSessionInfo.ip_dst = srcAddress->fHost;
// if this is a session packet, we need to send our address list back in
// response. This will cause the address lists to propagate in the opposite direction
// from the enumerate sessions packets
if (addressList->packetType == dp_SESSION_PACKET_ID) {
// short lastSendCount;
// we first check to see how many addresses we have sent to this address
// already. If we don't have any new ones, there is no point in wasting bandwidth
// lastSendCount = GetSendCount(srcAddress->fHost);
// if (gAddressList.addressCount > lastSendCount) {
// ChangeSendCount(srcAddress->fHost, gAddressList.addressCount);
tcpabi_udp_send_to_address(srcAddress, &gAddressList, sizeof(AddressListStruct));
// }
}
}
} else {
// there was no packet to read
theSize = -1;
}
return theSize;
}
