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1396 lines
37 KiB
1396 lines
37 KiB
/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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vwspx.c
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Abstract:
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ntVdm netWare (Vw) IPX/SPX Functions
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Vw: The peoples' network
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Contains internal routines for DOS/WOW SPX calls (netware functions).
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The SPX APIs use WinSock to perform the actual operations
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Contents:
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_VwSPXAbortConnection
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_VwSPXEstablishConnection
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_VwSPXGetConnectionStatus
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_VwSPXInitialize
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_VwSPXListenForConnection
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_VwSPXListenForSequencedPacket
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_VwSPXSendSequencedPacket
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_VwSPXTerminateConnection
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The SPX functions build on the IPX functions (VWIPX.C). SPX maintains
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connections, IPX maintains sockets. A socket may have a list of connections
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Author:
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Richard L Firth (rfirth) 30-Sep-1993
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Environment:
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User-mode Win32
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Revision History:
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30-Sep-1993 rfirth
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Created
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--*/
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#include "vw.h"
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#pragma hdrstop
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//
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// functions
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//
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VOID
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_VwSPXAbortConnection(
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IN WORD SPXConnectionID
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)
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/*++
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Routine Description:
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Aborts a connection. Because NWLink doesn't differentiate between abrupt
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and graceful closes, this function has the same effect as
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VwSPXTerminateConnection
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Arguments:
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SPXConnectionID - connection to abort
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Return Value:
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None.
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--*/
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{
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LPCONNECTION_INFO pConnectionInfo;
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RequestMutex();
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pConnectionInfo = FindConnection(SPXConnectionID);
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if (pConnectionInfo) {
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DequeueConnection(pConnectionInfo->OwningSocket, pConnectionInfo);
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AbortOrTerminateConnection(pConnectionInfo, ECB_CC_CONNECTION_ABORTED);
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} else {
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXAbortConnection,
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IPXDBG_LEVEL_ERROR,
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"VwSPXAbortConnection: cannot find connection %04x\n",
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SPXConnectionID
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));
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}
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ReleaseMutex();
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}
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WORD
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_VwSPXEstablishConnection(
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IN BYTE retryCount,
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IN BYTE watchDogFlag,
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OUT ULPWORD pSPXConnectionID,
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IN LPECB pEcb,
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IN ECB_ADDRESS EcbAddress
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)
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/*++
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Routine Description:
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Creates a connection with a remote SPX socket. The remote end can be on
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this machine (i.e. same app in DOS world)
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This call is Asynchronous
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Arguments:
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Inputs
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retryCount
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watchDogFlag
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pEcb
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EcbAddress
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Outputs
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pSPXConnectionID
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Return Value:
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00h Attempting to talk to remote
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EFh Local connection table full
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FDh Fragment count not 1; buffer size not 42
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FFh Send socket not open
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--*/
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{
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LPXECB pXecb = RetrieveXEcb(ECB_TYPE_SPX, pEcb, EcbAddress);
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LPSOCKET_INFO pSocketInfo;
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LPCONNECTION_INFO pConnectionInfo;
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WORD connectionId;
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LPSPX_PACKET pPacket;
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SOCKADDR_IPX destination;
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int rc;
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SOCKET s;
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// tommye - MS 30525
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//
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// Make sure the xecb alloc didn't fail
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// We don't know what the real SPX does if a malloc fails.
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//
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if (pXecb == NULL) {
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return SPX_BAD_SEND_REQUEST;
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}
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pSocketInfo = FindSocket(pXecb->SocketNumber);
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if (!pSocketInfo) {
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CompleteEcb(pXecb, ECB_CC_NON_EXISTENT_SOCKET);
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return SPX_NON_EXISTENT_SOCKET;
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}
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//
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// if no outstanding IPX operations, change socket to SPX
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//
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if (!pSocketInfo->SpxSocket) {
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if (!(pSocketInfo->PendingSends && pSocketInfo->PendingListens)) {
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rc = ReopenSocket(pSocketInfo);
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} else {
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rc = ECB_CC_BAD_SEND_REQUEST;
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}
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if (rc != SPX_SUCCESS) {
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CompleteOrQueueEcb(pXecb, (BYTE)rc);
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return SPX_BAD_SEND_REQUEST;
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}
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}
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//
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// real SPX will use the ECB to send an ESTABLISH CONNECTION packet. This
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// is handled for us within the SPX transport. Nevertheless we must check
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// the fragment and dismiss the request if its not sufficient
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//
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if ((pXecb->Ecb->FragmentCount != 1)
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|| (ECB_FRAGMENT(pXecb->Ecb, 0)->Length < SPX_HEADER_LENGTH)) {
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CompleteEcb(pXecb, ECB_CC_BAD_SEND_REQUEST);
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return SPX_BAD_SEND_REQUEST;
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}
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//
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// the socket is open for SPX. Allocate a connection/connection ID
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//
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pConnectionInfo = AllocateConnection(pSocketInfo);
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if (pConnectionInfo) {
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//
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// create new socket, bound to the same local address as the parent
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// socket. This is the 'connection'
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//
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#if REUSEADDR
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connectionId = pSocketInfo->SocketNumber;
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rc = CreateSocket(SOCKET_TYPE_SPX, &connectionId, &pConnectionInfo->Socket);
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s = pConnectionInfo->Socket;
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// if (rc == SPX_SUCCESS) {
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#else
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s = socket(AF_IPX, SOCK_SEQPACKET, NSPROTO_SPX);
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if (s != INVALID_SOCKET) {
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u_long arg = !0;
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//
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// put the socket in non-blocking I/O mode
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//
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rc = ioctlsocket(s, FIONBIO, &arg);
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if (rc != SOCKET_ERROR) {
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int true = 1;
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rc = setsockopt(s,
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NSPROTO_IPX,
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IPX_RECVHDR,
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(char FAR*)&true,
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sizeof(true)
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);
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if (rc != SOCKET_ERROR) {
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pConnectionInfo->Socket = s;
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} else {
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_ERROR,
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"VwSPXEstablishConnection: setsockopt(IPX_RECVHDR) returns %d\n",
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WSAGetLastError()
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));
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}
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} else {
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_ERROR,
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"VwSPXEstablishConnection: ioctlsocket(FIONBIO) returns %d\n",
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WSAGetLastError()
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));
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}
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} else {
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rc = WSAGetLastError();
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_ERROR,
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"VwSPXEstablishConnection: socket() returns %d\n",
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rc
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));
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}
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#endif
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} else {
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rc = !SPX_SUCCESS;
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}
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if (rc == SPX_SUCCESS) {
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pConnectionInfo->State = CI_STARTING;
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connectionId = pConnectionInfo->ConnectionId;
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//
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// set the ECB InUse field to 0xF7. Same as snowball by observation (and
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// probably correct anyway since it looks as though 0xF7 means 'waiting
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// to receive SPX packet', which is true in this case - normally SPX
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// creates a connection by sending an establish frame then waits for the
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// ack frame
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//
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pXecb->Ecb->InUse = ECB_IU_LISTENING_SPX;
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} else {
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//
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// if we failed to get CONNECTION_INFO or create the new socket, return
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// immediately with an error (socket table full?)
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//
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if (s != INVALID_SOCKET) {
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closesocket(s);
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}
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if (pConnectionInfo) {
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DeallocateConnection(pConnectionInfo);
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}
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CompleteEcb(pXecb, ECB_CC_CONNECTION_TABLE_FULL);
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return SPX_CONNECTION_TABLE_FULL;
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}
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//
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// get the destination info from the SPX header in VDM memory and set up the
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// connection. If the connect request would wait then we leave AES to
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// periodically check the progress of the request
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//
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pPacket = (LPSPX_PACKET)GET_FAR_POINTER(&ECB_FRAGMENT(pXecb->Ecb, 0)->Address,
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IS_PROT_MODE(pXecb)
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);
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if (pPacket == NULL) {
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CompleteEcb(pXecb, ECB_CC_BAD_SEND_REQUEST);
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return SPX_BAD_SEND_REQUEST;
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}
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//
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// fill in the packet details (app shouldn't look at these until the command
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// completes). In 16-bit SPX, these values are filled in by the transport.
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// Our transport does not return these values, so we have to 'invent' them,
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// but since they are fairly static it should be ok (maybe the transport
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// should return them)
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//
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pPacket->Checksum = 0xffff;
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pPacket->Length = L2BW(SPX_HEADER_LENGTH);
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pPacket->TransportControl = 0;
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pPacket->PacketType = SPX_PACKET_TYPE;
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pPacket->Source.Socket = pSocketInfo->SocketNumber;
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pPacket->ConnectionControl = SPX_SYSTEM_PACKET | SPX_ACK_REQUIRED;
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pPacket->DataStreamType = SPX_DS_ESTABLISH;
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pPacket->SourceConnectId = pConnectionInfo->ConnectionId;
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pPacket->DestinationConnectId = 0xffff;
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pPacket->SequenceNumber = 0;
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pPacket->AckNumber = 0;
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pPacket->AllocationNumber = 0;
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//
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// get the destination address info
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//
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CopyMemory(&destination.sa_netnum,
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(LPBYTE)&pPacket->Destination,
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sizeof(pPacket->Destination)
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);
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destination.sa_family = AF_IPX;
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//
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// initiate the connection
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//
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rc = connect(s, (LPSOCKADDR)&destination, sizeof(destination));
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if (rc != SOCKET_ERROR) {
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//
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// add the CONNECTION_INFO structure to the list of connections owned
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// by this socket and set the connection state to ESTABLISHED
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//
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_INFO,
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"VwSPXEstablishConnection: socket connected\n"
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));
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RequestMutex();
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QueueConnection(pSocketInfo, pConnectionInfo);
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pConnectionInfo->State = CI_ESTABLISHED;
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ReleaseMutex();
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//
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// the connection ID also appears in the first segment of the establish
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// ECB
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//
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pPacket->SourceConnectId = connectionId;
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//
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// the SPXEstablishConnection ECB is done!
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//
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CompleteEcb(pXecb, ECB_CC_SUCCESS);
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} else {
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rc = WSAGetLastError();
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if (rc == WSAEWOULDBLOCK) {
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//
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// the connect request is in progress. Add it to the queue of
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// pending SPXEstablishConnection requests (SHOULD ONLY BE 1 PER
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// CONNECTION!!!) and add the CONNECTION_INFO structure to the
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// owning SOCKET_INFO structure
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//
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RequestMutex();
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QueueEcb(pXecb,
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&pConnectionInfo->ConnectQueue,
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CONNECTION_CONNECT_QUEUE
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);
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QueueConnection(pSocketInfo, pConnectionInfo);
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ReleaseMutex();
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_INFO,
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"VwSPXEstablishConnection: connect() queued\n"
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));
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} else {
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_ERROR,
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"VwSPXEstablishConnection: connect(%x) returns %d\n",
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s,
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rc
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));
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//
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// the connect request failed. Deallocate all resources (socket,
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// CONNECTION_INFO, XECB) and return failure
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//
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closesocket(pConnectionInfo->Socket);
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DeallocateConnection(pConnectionInfo);
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CompleteEcb(pXecb, ECB_CC_CONNECTION_ABORTED);
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return SPX_CONNECTION_ABORTED;
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}
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}
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IPXDBGPRINT((__FILE__, __LINE__,
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FUNCTION_SPXEstablishConnection,
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IPXDBG_LEVEL_INFO,
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"VwSPXEstablishConnection: returning %04x\n",
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connectionId
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));
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*pSPXConnectionID = connectionId;
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return SPX_SUCCESS;
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}
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WORD
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_VwSPXGetConnectionStatus(
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IN WORD connectionId,
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OUT LPSPX_CONNECTION_STATS pStats
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)
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/*++
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Routine Description:
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Returns buffer crammed full of useful statistics or something (hu hu huh)
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This call is Synchronous
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Arguments:
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Inputs
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connectionId
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pStats
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Outputs
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on output, buffer in pStats contains:
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BYTE ConnectionStatus
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BYTE WatchDogActive
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WORD LocalConnectionID
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WORD RemoteConnectionID
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WORD SequenceNumber
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WORD LocalAckNumber
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WORD LocalAllocationNumber
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WORD RemoteAckNumber
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WORD RemoteAllocationNumber
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WORD LocalSocket
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BYTE ImmediateAddress[6]
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BYTE RemoteNetwork[4]
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WORD RetransmissionCount
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WORD RetransmittedPackets
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WORD SuppressedPackets
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Return Value:
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00h Connection is active
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EEh No such connection
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--*/
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{
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int rc;
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IPX_SPXCONNSTATUS_DATA buf;
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int buflen = sizeof(buf);
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LPCONNECTION_INFO pConnectionInfo;
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pConnectionInfo = FindConnection(connectionId);
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if (!pConnectionInfo) {
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return SPX_INVALID_CONNECTION;
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}
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//
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// get the stats
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//
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rc = getsockopt(pConnectionInfo->Socket,
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NSPROTO_IPX,
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IPX_SPXGETCONNECTIONSTATUS,
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(char FAR*)&buf,
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&buflen
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);
|
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if (rc == SOCKET_ERROR) {
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IPXDBGPRINT((__FILE__, __LINE__,
|
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FUNCTION_SPXGetConnectionStatus,
|
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IPXDBG_LEVEL_ERROR,
|
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"VwSPXGetConnectionStatus: getsockopt() returns %d\n",
|
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WSAGetLastError()
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));
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//
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// the request to get the stats failed - probably because the socket is
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// not yet connected. Fill in those bits we know about
|
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//
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ZeroMemory((LPBYTE)pStats, sizeof(*pStats));
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} else {
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//
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// copy the returned fields
|
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//
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pStats->RemoteConnectionId = buf.RemoteConnectionId;
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pStats->LocalSequenceNumber = buf.LocalSequenceNumber;
|
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pStats->LocalAckNumber = buf.LocalAckNumber;
|
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pStats->LocalAllocNumber = buf.LocalAllocNumber;
|
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pStats->RemoteAckNumber = buf.RemoteAckNumber;
|
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pStats->RemoteAllocNumber = buf.RemoteAllocNumber;
|
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pStats->LocalSocket = buf.LocalSocket;
|
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CopyMemory(&pStats->ImmediateAddress,
|
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&buf.ImmediateAddress,
|
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sizeof(buf.ImmediateAddress)
|
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);
|
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|
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//
|
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// copy remote network as a DWORD. Endian format is same for both
|
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//
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*(ULPDWORD)&pStats->RemoteNetwork = *(LPDWORD)&buf.RemoteNetwork;
|
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CopyMemory(&pStats->RemoteNode,
|
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&buf.RemoteNode,
|
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sizeof(buf.RemoteNode)
|
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);
|
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pStats->RemoteSocket = buf.RemoteSocket;
|
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pStats->RetransmissionCount = buf.RetransmissionCount;
|
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pStats->EstimatedRoundTripDelay = buf.EstimatedRoundTripDelay;
|
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pStats->RetransmittedPackets = buf.RetransmittedPackets;
|
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pStats->SuppressedPackets = buf.SuppressedPacket;
|
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}
|
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|
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//
|
|
// fill in common, known fields
|
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//
|
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|
|
pStats->State = pConnectionInfo->State; // not returned by NWIPX
|
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pStats->WatchDog = 0x02; // see novell dog-umentation
|
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pStats->LocalConnectionId = L2BW(pConnectionInfo->ConnectionId);
|
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pStats->LocalSocket = pConnectionInfo->OwningSocket->SocketNumber;
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|
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DUMPSTATS(pStats);
|
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|
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//
|
|
// we are returning some kind o stats - therefore success
|
|
//
|
|
|
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return SPX_SUCCESS;
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}
|
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|
|
|
|
WORD
|
|
_VwSPXInitialize(
|
|
OUT ULPBYTE pMajorRevisionNumber,
|
|
OUT ULPBYTE pMinorRevisionNumber,
|
|
OUT ULPWORD pMaxConnections,
|
|
OUT ULPWORD pAvailableConnections
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Informs the app that SPX is present on this station
|
|
|
|
This call is Synchronous
|
|
|
|
Arguments:
|
|
|
|
Inputs
|
|
|
|
Outputs
|
|
pMajorRevisionNumber - SPX Major revision number
|
|
pminorRevisionNumber - SPX Minor revision number
|
|
pMaxConnections - Maximum SPX connections supported
|
|
normally from SHELL.CFG
|
|
pAvailableConnections - Available SPX connections
|
|
|
|
Return Value:
|
|
|
|
00h Not installed
|
|
FFh Installed
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
//
|
|
// The following values are returned same as per Windows For Workgroups
|
|
// v3.10
|
|
//
|
|
|
|
*pMajorRevisionNumber = 3;
|
|
*pMinorRevisionNumber = 10;
|
|
*pMaxConnections = 128;
|
|
*pAvailableConnections = *pMaxConnections - 1 ;
|
|
|
|
return SPX_INSTALLED;
|
|
}
|
|
|
|
|
|
VOID
|
|
_VwSPXListenForConnection(
|
|
IN BYTE retryCount,
|
|
IN BYTE watchDogFlag,
|
|
IN LPECB pEcb,
|
|
IN ECB_ADDRESS EcbAddress
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Listens for an incoming connection request
|
|
|
|
This call is Asynchronous
|
|
|
|
Arguments:
|
|
|
|
Inputs
|
|
retryCount
|
|
watchDogFlag
|
|
pEcb
|
|
EcbAddress
|
|
|
|
Outputs
|
|
Nothing
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
LPXECB pXecb = RetrieveXEcb(ECB_TYPE_SPX, pEcb, EcbAddress);
|
|
LPSOCKET_INFO pSocketInfo;
|
|
LPCONNECTION_INFO pConnectionInfo;
|
|
SOCKET sock;
|
|
SOCKET conn;
|
|
SOCKADDR_IPX remoteAddress;
|
|
int rc;
|
|
BYTE completionCode;
|
|
|
|
// tommye - MS 30525
|
|
//
|
|
// Make sure the xecb alloc didn't fail
|
|
//
|
|
|
|
if (pXecb == NULL) {
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForConnection,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"RetrieveXEcb returned NULL pointer"
|
|
));
|
|
return;
|
|
}
|
|
|
|
//
|
|
// it turns out that SPXListenForConnection doesn't need a fragment to
|
|
// receive connection info - that is handled by SPXListenForSequencedPacket
|
|
// that the app has dutifully initiated
|
|
//
|
|
|
|
pSocketInfo = FindSocket(pXecb->SocketNumber);
|
|
if (!pSocketInfo) {
|
|
completionCode = ECB_CC_NON_EXISTENT_SOCKET;
|
|
goto lc_completion_exit;
|
|
}
|
|
|
|
//
|
|
// if no outstanding IPX operations, change socket to SPX
|
|
//
|
|
|
|
if (!pSocketInfo->SpxSocket) {
|
|
if (!(pSocketInfo->PendingSends && pSocketInfo->PendingListens)) {
|
|
rc = ReopenSocket(pSocketInfo);
|
|
} else {
|
|
rc = ECB_CC_BAD_LISTEN_REQUEST;
|
|
}
|
|
if (rc != SPX_SUCCESS) {
|
|
completionCode = (BYTE)rc;
|
|
goto lc_completion_exit;
|
|
}
|
|
}
|
|
|
|
//
|
|
// the socket is open for SPX. Allocate a connection/connection ID
|
|
//
|
|
|
|
pConnectionInfo = AllocateConnection(pSocketInfo);
|
|
if (!pConnectionInfo) {
|
|
completionCode = ECB_CC_CONNECTION_TABLE_FULL;
|
|
goto lc_completion_exit;
|
|
}
|
|
|
|
//
|
|
// put the socket into listening state and try to accept a connection
|
|
//
|
|
|
|
sock = pSocketInfo->Socket;
|
|
|
|
//
|
|
// If the socket is already listening, will probably return an
|
|
// error: just queue
|
|
//
|
|
|
|
rc = listen(sock, MAX_LISTEN_QUEUE_SIZE);
|
|
if (rc != SOCKET_ERROR) {
|
|
|
|
int addressLength = sizeof(remoteAddress);
|
|
|
|
conn = accept(sock, (LPSOCKADDR)&remoteAddress, &addressLength);
|
|
if (conn != SOCKET_ERROR) {
|
|
|
|
//
|
|
// we want to receive the frame headers from this socket
|
|
//
|
|
|
|
BOOL bval = TRUE;
|
|
|
|
rc = setsockopt(conn,
|
|
NSPROTO_IPX,
|
|
IPX_RECVHDR,
|
|
(char FAR*)&bval,
|
|
sizeof(bval)
|
|
);
|
|
if (rc != SOCKET_ERROR) {
|
|
|
|
//
|
|
// update the CONNECTION_INFO structure with the actual socket
|
|
// identifier and set the connection state to established
|
|
//
|
|
|
|
pConnectionInfo->Socket = conn;
|
|
pConnectionInfo->State = CI_ESTABLISHED;
|
|
|
|
//
|
|
// add the CONNECTION_INFO structure to the list of connections owned
|
|
// by this socket
|
|
//
|
|
|
|
RequestMutex();
|
|
QueueConnection(pSocketInfo, pConnectionInfo);
|
|
ReleaseMutex();
|
|
|
|
//
|
|
// update the app's ECB with the connection ID
|
|
//
|
|
|
|
SPX_ECB_CONNECTION_ID(pXecb->Ecb) = pConnectionInfo->ConnectionId;
|
|
|
|
//
|
|
// and with the partner address info
|
|
//
|
|
|
|
CopyMemory(&pXecb->Ecb->DriverWorkspace,
|
|
&remoteAddress.sa_netnum,
|
|
sizeof(pXecb->Ecb->DriverWorkspace)
|
|
);
|
|
completionCode = ECB_CC_SUCCESS;
|
|
goto lc_completion_exit;
|
|
} else {
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForConnection,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"VwSPXListenForConnection: setsockopt(RECVHDR) returns %d\n",
|
|
WSAGetLastError()
|
|
));
|
|
|
|
closesocket(conn);
|
|
completionCode = ECB_CC_CONNECTION_ABORTED;
|
|
goto lc_deallocate_exit;
|
|
}
|
|
} else {
|
|
rc = WSAGetLastError();
|
|
if (rc == WSAEWOULDBLOCK) {
|
|
|
|
//
|
|
// the accept request is in progress. Add it to the queue of
|
|
// pending SPXListenForConnection requests (SHOULD ONLY BE 1 PER
|
|
// CONNECTION!!!) and add the CONNECTION_INFO structure to the
|
|
// owning SOCKET_INFO structure
|
|
//
|
|
|
|
pConnectionInfo->State = CI_WAITING; // waiting for incoming connect
|
|
RequestMutex();
|
|
QueueEcb(pXecb,
|
|
&pConnectionInfo->AcceptQueue,
|
|
CONNECTION_ACCEPT_QUEUE
|
|
);
|
|
QueueConnection(pSocketInfo, pConnectionInfo);
|
|
pXecb->Ecb->InUse = ECB_IU_AWAITING_CONNECTION;
|
|
ReleaseMutex();
|
|
} else {
|
|
|
|
//
|
|
// the accept request failed. Deallocate all resources
|
|
// (CONNECTION_INFO, XECB) and complete the ECB with a failure
|
|
// indication
|
|
//
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForConnection,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"VwSPXListenForConnection: accept() returns %d\n",
|
|
rc
|
|
));
|
|
|
|
completionCode = ECB_CC_CONNECTION_ABORTED;
|
|
goto lc_deallocate_exit;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForConnection,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"VwSPXListenForConnection: listen() returns %d\n",
|
|
WSAGetLastError()
|
|
));
|
|
|
|
//
|
|
// listen failed? Bogus. Complete the ECB and we're outta here
|
|
//
|
|
|
|
completionCode = ECB_CC_CONNECTION_ABORTED;
|
|
goto lc_deallocate_exit;
|
|
}
|
|
|
|
//
|
|
// here if we queued the listen request
|
|
//
|
|
|
|
return;
|
|
|
|
lc_deallocate_exit:
|
|
DeallocateConnection(pConnectionInfo);
|
|
|
|
lc_completion_exit:
|
|
CompleteEcb(pXecb, completionCode);
|
|
}
|
|
|
|
|
|
VOID
|
|
_VwSPXListenForSequencedPacket(
|
|
IN LPECB pEcb,
|
|
IN ECB_ADDRESS EcbAddress
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Attempts to receive an SPX packet. This call is made against the top-level
|
|
socket (the socket in SPX-speak, not the connection). We can receive a
|
|
packet from any connection assigned to this socket. In this function, we
|
|
just queue the ECB (since there is no return status, we expect that the
|
|
app has supplied an ESR) and let AES handle it
|
|
|
|
This call is Asynchronous
|
|
|
|
Arguments:
|
|
|
|
Inputs
|
|
pEcb
|
|
EcbAddress
|
|
|
|
Outputs
|
|
Nothing
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
LPXECB pXecb = RetrieveXEcb(ECB_TYPE_SPX, pEcb, EcbAddress);
|
|
LPSOCKET_INFO pSocketInfo;
|
|
int rc;
|
|
BOOL dummy ;
|
|
BYTE status;
|
|
|
|
// tommye - MS 30525
|
|
//
|
|
// Make sure the xecb alloc didn't fail
|
|
//
|
|
|
|
if (pXecb == NULL) {
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForSequencedPacket,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"RetrieveXEcb returned NULL pointer"
|
|
));
|
|
return;
|
|
}
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXListenForSequencedPacket,
|
|
IPXDBG_LEVEL_INFO,
|
|
"VwSPXListenForSequencedPacket(%04x:%04x) socket=%04x ESR=%04x:%04x\n",
|
|
HIWORD(pXecb->EcbAddress),
|
|
LOWORD(pXecb->EcbAddress),
|
|
B2LW(pXecb->SocketNumber),
|
|
HIWORD(pXecb->EsrAddress),
|
|
LOWORD(pXecb->EsrAddress)
|
|
));
|
|
|
|
pSocketInfo = FindSocket(pXecb->SocketNumber);
|
|
if (!pSocketInfo) {
|
|
status = ECB_CC_NON_EXISTENT_SOCKET;
|
|
goto lp_exit;
|
|
}
|
|
|
|
//
|
|
// if no outstanding IPX operations, change socket to SPX
|
|
//
|
|
|
|
if (!pSocketInfo->SpxSocket) {
|
|
if (!(pSocketInfo->PendingSends && pSocketInfo->PendingListens)) {
|
|
rc = ReopenSocket(pSocketInfo);
|
|
} else {
|
|
rc = ECB_CC_BAD_LISTEN_REQUEST;
|
|
}
|
|
if (rc != SPX_SUCCESS) {
|
|
status = (BYTE)rc;
|
|
goto lp_exit;
|
|
}
|
|
}
|
|
|
|
//
|
|
// the first fragment must be large enough to hold an SPX packet header
|
|
//
|
|
|
|
if ((pXecb->Ecb->FragmentCount == 0)
|
|
|| (ECB_FRAGMENT(pXecb->Ecb, 0)->Length < SPX_HEADER_LENGTH)) {
|
|
status = ECB_CC_BAD_LISTEN_REQUEST;
|
|
goto lp_exit;
|
|
}
|
|
|
|
//
|
|
// we have a socket and the receive buffer looks good. Get a buffer for recv()
|
|
//
|
|
|
|
if (!GetIoBuffer(pXecb, FALSE, SPX_HEADER_LENGTH)) {
|
|
status = ECB_CC_BAD_LISTEN_REQUEST;
|
|
goto lp_exit;
|
|
} else {
|
|
|
|
//
|
|
// when recv() is attempted against this request, it will be the first
|
|
// time we tried to receive anything to this buffer. That means (if we
|
|
// get anything) that the buffer will contain the length of the entire
|
|
// frame
|
|
//
|
|
|
|
pXecb->Flags |= XECB_FLAG_FIRST_RECEIVE;
|
|
}
|
|
|
|
//
|
|
// mark the VDM ECB as in use
|
|
//
|
|
|
|
pXecb->Ecb->InUse = ECB_IU_LISTENING_SPX;
|
|
|
|
//
|
|
// add this ECB to the queue of listens for the top-level socket and quit
|
|
//
|
|
|
|
RequestMutex();
|
|
|
|
if ((pXecb->Ecb->FragmentCount == 1) &&
|
|
(ECB_FRAGMENT(pXecb->Ecb, 0)->Length == SPX_HEADER_LENGTH))
|
|
{
|
|
QueueEcb(pXecb, &pSocketInfo->HeaderQueue, SOCKET_HEADER_QUEUE);
|
|
}
|
|
else
|
|
{
|
|
QueueEcb(pXecb, &pSocketInfo->ListenQueue, SOCKET_LISTEN_QUEUE);
|
|
}
|
|
|
|
ReleaseMutex();
|
|
|
|
//
|
|
// see if we are ready to rock
|
|
//
|
|
|
|
CheckPendingSpxRequests(&dummy);
|
|
return;
|
|
|
|
lp_exit:
|
|
CompleteOrQueueEcb(pXecb, status);
|
|
}
|
|
|
|
|
|
VOID
|
|
_VwSPXSendSequencedPacket(
|
|
IN WORD connectionId,
|
|
IN LPECB pEcb,
|
|
IN ECB_ADDRESS EcbAddress
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Sends a packet on an SPX connection
|
|
|
|
This call is Asynchronous
|
|
|
|
Arguments:
|
|
|
|
Inputs
|
|
connectionId
|
|
pEcb
|
|
EcbAddress
|
|
|
|
Outputs
|
|
Nothing
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
LPXECB pXecb = RetrieveXEcb(ECB_TYPE_SPX, pEcb, EcbAddress);
|
|
LPCONNECTION_INFO pConnectionInfo;
|
|
int rc;
|
|
BOOL addToQueue;
|
|
LPSPX_PACKET pPacket;
|
|
|
|
// tommye - MS 30525
|
|
//
|
|
// Make sure the xecb alloc didn't fail
|
|
//
|
|
|
|
if (pXecb == NULL) {
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"RetrieveXEcb returned NULL pointer"
|
|
));
|
|
return;
|
|
}
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_INFO,
|
|
"VwSPXSendSequencedPacket(%04x:%04x) Connection=%04x ESR=%04x:%04x\n",
|
|
HIWORD(pXecb->EcbAddress),
|
|
LOWORD(pXecb->EcbAddress),
|
|
connectionId,
|
|
HIWORD(pXecb->EsrAddress),
|
|
LOWORD(pXecb->EsrAddress)
|
|
));
|
|
|
|
IPXDUMPECB((pXecb->Ecb,
|
|
HIWORD(pXecb->EcbAddress),
|
|
LOWORD(pXecb->EcbAddress),
|
|
ECB_TYPE_SPX,
|
|
TRUE,
|
|
TRUE,
|
|
IS_PROT_MODE(pXecb)
|
|
));
|
|
|
|
//
|
|
// find the connection. No need to check if this is an SPX socket: if we
|
|
// can't find the connection, its a bad connection, else the socket must
|
|
// be open for SPX
|
|
//
|
|
|
|
pConnectionInfo = FindConnection(connectionId);
|
|
if (!pConnectionInfo || (pConnectionInfo->State != CI_ESTABLISHED)) {
|
|
CompleteOrQueueEcb(pXecb, ECB_CC_INVALID_CONNECTION);
|
|
return;
|
|
}
|
|
|
|
//
|
|
// the first fragment must be large enough to hold an SPX packet header
|
|
//
|
|
|
|
if ((pXecb->Ecb->FragmentCount == 0)
|
|
|| (ECB_FRAGMENT(pXecb->Ecb, 0)->Length < SPX_HEADER_LENGTH)) {
|
|
CompleteOrQueueEcb(pXecb, ECB_CC_BAD_SEND_REQUEST);
|
|
return;
|
|
}
|
|
if (!GetIoBuffer(pXecb, TRUE, SPX_HEADER_LENGTH)) {
|
|
CompleteOrQueueEcb(pXecb, ECB_CC_BAD_SEND_REQUEST);
|
|
return;
|
|
}
|
|
|
|
pPacket = (LPSPX_PACKET)GET_FAR_POINTER(
|
|
&(ECB_FRAGMENT(pXecb->Ecb, 0)->Address),
|
|
IS_PROT_MODE(pXecb)
|
|
);
|
|
|
|
//
|
|
// fill in the following fields in the SPX header:
|
|
//
|
|
// Checksum
|
|
// Length
|
|
// TransportControl
|
|
// Source (network, node, socket)
|
|
//
|
|
// Does real IPX modify these fields in app memory?
|
|
// If so, does the app expect modified fields?
|
|
// If not, we need to always copy then modify memory,
|
|
// even if only 1 fragment
|
|
//
|
|
|
|
pPacket->Checksum = 0xFFFF;
|
|
|
|
//
|
|
// since the transport adds the SPX header, we subtracted the length of
|
|
// the header from our transmit length; add it back when updating the
|
|
// header in the app's space
|
|
//
|
|
|
|
pPacket->Length = L2BW(pXecb->Length + SPX_HEADER_LENGTH);
|
|
pPacket->TransportControl = 0;
|
|
CopyMemory((LPBYTE)&pPacket->Source,
|
|
&MyInternetAddress.sa_netnum,
|
|
sizeof(MyInternetAddress.sa_netnum)
|
|
+ sizeof(MyInternetAddress.sa_nodenum)
|
|
);
|
|
pPacket->Source.Socket = pConnectionInfo->OwningSocket->SocketNumber;
|
|
|
|
//
|
|
// if we allocated a buffer then there is >1 fragment. Collect them
|
|
//
|
|
|
|
if (pXecb->Flags & XECB_FLAG_BUFFER_ALLOCATED) {
|
|
GatherData(pXecb, SPX_HEADER_LENGTH);
|
|
}
|
|
|
|
//
|
|
// mark the VDM ECB as in use
|
|
//
|
|
|
|
pXecb->Ecb->InUse = ECB_IU_SENDING;
|
|
|
|
//
|
|
// if there is a send queued on this connection already, add this request
|
|
// to the back of the queue and let AES do the rest
|
|
//
|
|
|
|
RequestMutex();
|
|
if (pConnectionInfo->SendQueue.Head) {
|
|
addToQueue = TRUE;
|
|
} else {
|
|
|
|
int dataStreamType;
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_INFO,
|
|
"VwSPXSendSequencedPacket: sending %d (0x%x) bytes from %08x\n",
|
|
pXecb->Length,
|
|
pXecb->Length,
|
|
pXecb->Data
|
|
));
|
|
|
|
//
|
|
// no outstanding sends queued for this connection. Start sending this
|
|
// packet
|
|
//
|
|
|
|
dataStreamType = (int)pPacket->DataStreamType;
|
|
rc = setsockopt(pConnectionInfo->Socket,
|
|
NSPROTO_IPX,
|
|
IPX_DSTYPE,
|
|
(char FAR*)&dataStreamType,
|
|
sizeof(dataStreamType)
|
|
);
|
|
if (rc != SOCKET_ERROR) {
|
|
|
|
//
|
|
// if the app set the END_OF_MESSAGE bit in the ConnectionControl
|
|
// field then set the flags to 0: NWLink will automatically set the
|
|
// end-of-message bit in the packet; otherwise set flags to MSG_PARTIAL
|
|
// to indicate to NWLink that it *shouldn't* set the bit in the packet
|
|
//
|
|
|
|
int flags = (pPacket->ConnectionControl & SPX_END_OF_MESSAGE)
|
|
? 0
|
|
: MSG_PARTIAL
|
|
;
|
|
|
|
rc = send(pConnectionInfo->Socket, pXecb->Data, pXecb->Length, flags);
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_INFO,
|
|
"VwSPXSendSequencedPacket: send() returns %d\n",
|
|
rc
|
|
));
|
|
|
|
if (rc == pXecb->Length) {
|
|
|
|
//
|
|
// all data sent
|
|
//
|
|
|
|
CompleteOrQueueIo(pXecb, ECB_CC_SUCCESS);
|
|
addToQueue = FALSE;
|
|
} else if (rc == SOCKET_ERROR) {
|
|
rc = WSAGetLastError();
|
|
if (rc == WSAEWOULDBLOCK) {
|
|
|
|
//
|
|
// can't send right now. Queue it for AES
|
|
//
|
|
|
|
addToQueue = TRUE;
|
|
}
|
|
} else {
|
|
|
|
//
|
|
// partial data sent. Update the buffer pointer and length fields
|
|
// and queue this request
|
|
//
|
|
|
|
pXecb->Data += rc;
|
|
pXecb->Length -= (WORD)rc;
|
|
addToQueue = TRUE;
|
|
}
|
|
} else {
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_ERROR,
|
|
"VwSPXSendSequencedPacket: setsockopt(IPX_DSTYPE) returns %d\n",
|
|
WSAGetLastError()
|
|
));
|
|
|
|
CompleteOrQueueIo(pXecb, ECB_CC_BAD_REQUEST);
|
|
}
|
|
}
|
|
|
|
//
|
|
// if addToQueue set then we can't do anything right now - add this
|
|
// request to the send queue
|
|
//
|
|
|
|
if (addToQueue) {
|
|
|
|
IPXDBGPRINT((__FILE__, __LINE__,
|
|
FUNCTION_SPXSendSequencedPacket,
|
|
IPXDBG_LEVEL_WARNING,
|
|
"VwSPXSendSequencedPacket: adding XECB %08x to send queue\n",
|
|
pXecb
|
|
));
|
|
|
|
QueueEcb(pXecb, &pConnectionInfo->SendQueue, CONNECTION_SEND_QUEUE);
|
|
}
|
|
ReleaseMutex();
|
|
}
|
|
|
|
|
|
VOID
|
|
_VwSPXTerminateConnection(
|
|
IN WORD SPXConnectionID,
|
|
IN LPECB pEcb,
|
|
IN ECB_ADDRESS EcbAddress
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Terminates a connection
|
|
|
|
Arguments:
|
|
|
|
SPXConnectionID - connection to terminate
|
|
pEcb - pointer to 16-bit ECB to use
|
|
EcbAddress - address of 16-bit ECB in 16:16 format
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
LPCONNECTION_INFO pConnectionInfo;
|
|
LPXECB pXecb = RetrieveXEcb(ECB_TYPE_SPX, pEcb, EcbAddress);
|
|
BYTE status;
|
|
BYTE completionCode;
|
|
|
|
// tommye - MS 30525
|
|
//
|
|
// Make sure the xecb alloc didn't fail
|
|
//
|
|
|
|
if (pXecb == NULL) {
|
|
return;
|
|
}
|
|
|
|
RequestMutex();
|
|
pConnectionInfo = FindConnection(SPXConnectionID);
|
|
if (pConnectionInfo) {
|
|
|
|
//
|
|
// once dequeued, pConnectionInfo no longer points to OwningSocket
|
|
//
|
|
|
|
WORD socketNumber = pConnectionInfo->OwningSocket->SocketNumber;
|
|
|
|
DequeueConnection(pConnectionInfo->OwningSocket, pConnectionInfo);
|
|
if ((pXecb->Ecb->FragmentCount >= 1)
|
|
&& (ECB_FRAGMENT(pXecb->Ecb, 0)->Length >= SPX_HEADER_LENGTH)) {
|
|
|
|
LPSPX_PACKET pPacket;
|
|
SOCKADDR_IPX remote;
|
|
int remoteLen = sizeof(remote);
|
|
|
|
completionCode = ECB_CC_CONNECTION_TERMINATED;
|
|
status = ECB_CC_SUCCESS;
|
|
|
|
//
|
|
// fill in the packet header: this would normally contain the
|
|
// acknowledgement packet from the remote partner
|
|
//
|
|
|
|
pPacket = (LPSPX_PACKET)GET_FAR_POINTER(
|
|
&(ECB_FRAGMENT(pXecb->Ecb, 0)->Address),
|
|
IS_PROT_MODE(pXecb)
|
|
);
|
|
if (pPacket == NULL) {
|
|
completionCode = ECB_CC_CONNECTION_ABORTED;
|
|
status = ECB_CC_BAD_REQUEST;
|
|
}
|
|
else {
|
|
pPacket->Checksum = 0xffff;
|
|
pPacket->Length = L2BW(SPX_HEADER_LENGTH);
|
|
pPacket->TransportControl = 0;
|
|
pPacket->PacketType = SPX_PACKET_TYPE;
|
|
getpeername(pConnectionInfo->Socket, (LPSOCKADDR)&remote, &remoteLen);
|
|
CopyMemory((LPBYTE)&pPacket->Destination,
|
|
(LPBYTE)&remote.sa_netnum,
|
|
sizeof(NETWARE_ADDRESS)
|
|
);
|
|
CopyMemory((LPBYTE)&pPacket->Source,
|
|
(LPBYTE)&MyInternetAddress.sa_netnum,
|
|
sizeof(INTERNET_ADDRESS)
|
|
);
|
|
pPacket->Source.Socket = socketNumber;
|
|
pPacket->ConnectionControl = SPX_ACK_REQUIRED;
|
|
pPacket->DataStreamType = SPX_DS_TERMINATE;
|
|
pPacket->SourceConnectId = pConnectionInfo->ConnectionId;
|
|
pPacket->DestinationConnectId = 0;
|
|
pPacket->SequenceNumber = 0;
|
|
pPacket->AckNumber = 0;
|
|
pPacket->AllocationNumber = 0;
|
|
}
|
|
|
|
} else {
|
|
completionCode = ECB_CC_CONNECTION_ABORTED;
|
|
status = ECB_CC_BAD_REQUEST;
|
|
}
|
|
AbortOrTerminateConnection(pConnectionInfo, completionCode);
|
|
} else {
|
|
status = ECB_CC_INVALID_CONNECTION;
|
|
}
|
|
ReleaseMutex();
|
|
CompleteOrQueueEcb(pXecb, status);
|
|
}
|