693 lines
19 KiB
C
693 lines
19 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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mssndrcv.c
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Abstract:
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This module implements all functions related to transmitting and recieving SMB's for
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mailslot related operations.
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Revision History:
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Balan Sethu Raman [SethuR] 6-June-1995
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Notes:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include "hostannc.h"
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#include "mssndrcv.h"
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// Forward references of functions ....
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//
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NTSTATUS
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MsUninitialize(PVOID pTransport);
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NTSTATUS
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MsInitializeExchange(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMB_EXCHANGE pExchange);
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NTSTATUS
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MsTranceive(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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PSMB_EXCHANGE pExchange,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext);
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NTSTATUS
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MsReceive(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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PSMB_EXCHANGE pExchange);
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NTSTATUS
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MsSend(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext);
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NTSTATUS
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MsSendDatagram(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext);
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NTSTATUS
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MsInitializeExchange(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMB_EXCHANGE pExchange);
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NTSTATUS
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MsUninitializeExchange(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMB_EXCHANGE pExchange);
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VOID
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MsTimerEventHandler(
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PVOID pTransport);
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NTSTATUS
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MsInitiateDisconnect(
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PSMBCE_SERVER_TRANSPORT pServerTransport);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, MsInstantiateServerTransport)
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#pragma alloc_text(PAGE, MsTranceive)
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#pragma alloc_text(PAGE, MsReceive)
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#pragma alloc_text(PAGE, MsSend)
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#pragma alloc_text(PAGE, MsSendDatagram)
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#pragma alloc_text(PAGE, MsInitializeExchange)
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#pragma alloc_text(PAGE, MsUninitializeExchange)
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#pragma alloc_text(PAGE, MsTimerEventHandler)
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#pragma alloc_text(PAGE, MsInitiateDisconnect)
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#endif
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RXDT_DefineCategory(MSSNDRCV);
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#define Dbg (DEBUG_TRACE_MSSNDRCV)
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extern TRANSPORT_DISPATCH_VECTOR MRxSmbMailSlotTransportDispatch;
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#define SMBDATAGRAM_LOCAL_ENDPOINT_NAME "*SMBDATAGRAM "
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NTSTATUS
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MsInstantiateServerTransport(
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IN OUT PSMBCE_SERVER_TRANSPORT_CONSTRUCTION_CONTEXT pContext)
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/*++
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Routine Description:
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This routine initializes the MAILSLOT transport information corresponding to a server
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It allocates the transport address. It constructs two address strutures for the server
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name: a NETBIOS_EX type address and a NETBIOS type address. The latter only has up to the
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first 16 characters of the name, while a NETBIOS_EX may have more.
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Arguments:
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pContext - the transport construction context
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Return Value:
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STATUS_SUCCESS - the server transport construction has been finalized.
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Other Status codes correspond to error situations.
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Notes:
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The remote address can be either deduced from the information in the Rx Context
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or a NETBIOS address needs to be built from the server name.
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This transport address is used subsequently to establish the connection.
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// The last character of the name depends upon the path name passed in.
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// There are currently four possible alternatives ....
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//
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// \\*\mailslot\...... => the primary domain is used for broadcasts
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// (This mapping is handled by the RDBSS)
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//
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// \\Uniquename\mailslot\.... => maps to either a computer name or a group
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// name for mailslot writes.
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//
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// \\DomainName*\mailslot\.... => maps to a netbios address of the form
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// domainname ...1c for broadcasts.
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//
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// \\DomainName**\mailslot\.... => maps to a netbios address of the form
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// domainname....1b for broadcasts.
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//
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// Initialize the NETBIOS address according to these formats.
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Nbt.SendDatagram only looks at the first address. It is smart enough to treat a NETBIOS_EX
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address like a NETBIOS address when the length < NETBIOS_NAME_LEN. So if the name is
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short enough, I fill in byte 15 of the name for the NETBIOS_EX case as well.
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--*/
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{
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NTSTATUS Status;
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PSMBCEDB_SERVER_ENTRY pServerEntry;
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PSMBCE_SERVER_MAILSLOT_TRANSPORT pMsTransport;
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UNICODE_STRING ServerName;
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OEM_STRING OemServerName;
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ULONG ServerNameLength;
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PTRANSPORT_ADDRESS pTA;
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PTA_ADDRESS taa;
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PTDI_ADDRESS_NETBIOS na;
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PAGED_CODE();
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RxDbgTrace(0, Dbg, ("MsInitialize : Mailslot Transport Initialization\n"));
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ASSERT(pContext->State == SmbCeServerMailSlotTransportConstructionBegin);
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pServerEntry = pContext->pServerEntry;
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pMsTransport = (PSMBCE_SERVER_MAILSLOT_TRANSPORT)
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RxAllocatePoolWithTag(
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NonPagedPool,
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sizeof(SMBCE_SERVER_MAILSLOT_TRANSPORT),
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MRXSMB_MAILSLOT_POOLTAG);
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if (pMsTransport != NULL) {
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RtlZeroMemory(pMsTransport,sizeof(SMBCE_SERVER_MAILSLOT_TRANSPORT));
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ServerName.Buffer = pServerEntry->Name.Buffer + 1;
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ServerName.Length = pServerEntry->Name.Length - sizeof(WCHAR);
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ServerName.MaximumLength = pServerEntry->Name.MaximumLength - sizeof(WCHAR);
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ServerNameLength = RtlUnicodeStringToOemSize(&ServerName) - 1;
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pMsTransport->TransportAddressLength = FIELD_OFFSET(TRANSPORT_ADDRESS,Address)
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+ (FIELD_OFFSET(TA_ADDRESS,Address))
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+ TDI_ADDRESS_LENGTH_NETBIOS
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+ 4 * sizeof(ULONG); // if the server name length is NETBIOS_NAME_LEN,
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// RtlUpcaseUnicodeStringToOemString could overrun the buffer.
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if (ServerNameLength > NETBIOS_NAME_LEN) {
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pMsTransport->TransportAddressLength += ServerNameLength;
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}
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pMsTransport->pTransportAddress = (PTRANSPORT_ADDRESS)RxAllocatePoolWithTag(
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NonPagedPool,
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pMsTransport->TransportAddressLength,
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MRXSMB_MAILSLOT_POOLTAG);
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if (pMsTransport->pTransportAddress != NULL) {
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pTA = pMsTransport->pTransportAddress;
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pTA->TAAddressCount = 1;
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// *****************************************
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// FIRST ADDRESS: TDI_ADDRESS_TYPE_NETBIOS
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// *****************************************
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taa = pTA->Address;
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taa->AddressLength = (USHORT) TDI_ADDRESS_LENGTH_NETBIOS;
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if (ServerNameLength > NETBIOS_NAME_LEN) {
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taa->AddressLength += (USHORT)(ServerNameLength - NETBIOS_NAME_LEN);
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}
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taa->AddressType = TDI_ADDRESS_TYPE_NETBIOS;
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na = (PTDI_ADDRESS_NETBIOS) taa->Address;
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na->NetbiosNameType = TDI_ADDRESS_NETBIOS_TYPE_QUICK_UNIQUE;
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OemServerName.MaximumLength = (USHORT) (ServerNameLength + 1); // in case null term
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OemServerName.Buffer = na->NetbiosName;
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Status = RtlUpcaseUnicodeStringToOemString(&OemServerName,
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&ServerName,
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FALSE);
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if (Status == STATUS_SUCCESS) {
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// Blank-pad the server name buffer if necessary to 16 characters
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if (OemServerName.Length <= NETBIOS_NAME_LEN) {
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RtlCopyMemory(&OemServerName.Buffer[OemServerName.Length],
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" ",
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NETBIOS_NAME_LEN - OemServerName.Length);
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}
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// Set type pneultimate byte in netbios name
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if (OemServerName.Buffer[OemServerName.Length - 1] == '*') {
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if (OemServerName.Length <= NETBIOS_NAME_LEN ||
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(OemServerName.Length == NETBIOS_NAME_LEN + 1 &&
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OemServerName.Buffer[OemServerName.Length - 2] == '*')) {
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if ((OemServerName.Length >= 2) &&
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(OemServerName.Buffer[OemServerName.Length - 2] == '*')) {
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if (OemServerName.Length <= NETBIOS_NAME_LEN) {
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OemServerName.Buffer[OemServerName.Length - 1] = ' ';
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OemServerName.Buffer[OemServerName.Length - 2] = ' ';
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} else {
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taa->AddressLength = (USHORT)TDI_ADDRESS_LENGTH_NETBIOS;
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}
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OemServerName.Buffer[NETBIOS_NAME_LEN - 1] = PRIMARY_CONTROLLER_SIGNATURE;
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} else {
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OemServerName.Buffer[OemServerName.Length - 1] = ' ';
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OemServerName.Buffer[NETBIOS_NAME_LEN - 1] = DOMAIN_CONTROLLER_SIGNATURE;
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}
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} else {
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Status = STATUS_BAD_NETWORK_PATH;
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}
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} else {
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OemServerName.Buffer[NETBIOS_NAME_LEN - 1] = WORKSTATION_SIGNATURE;
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}
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}
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} else {
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Status = STATUS_INSUFFICIENT_RESOURCES;
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RxDbgTrace(0, Dbg, ("MsInitialize : Memory Allocation failed\n"));
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}
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if (Status == STATUS_SUCCESS) {
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pMsTransport->pTransport = NULL;
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pMsTransport->State = SMBCEDB_ACTIVE;
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pMsTransport->pDispatchVector = &MRxSmbMailSlotTransportDispatch;
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} else {
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RxDbgTrace(0, Dbg, ("MsInitialize : Mailsslot transport initialization Failed %lx\n",
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Status));
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MsUninitialize(pMsTransport);
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pMsTransport = NULL;
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}
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} else {
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RxDbgTrace(0, Dbg, ("MsInitialize : Memory Allocation failed\n"));
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Status = STATUS_INSUFFICIENT_RESOURCES;
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}
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if (Status == STATUS_SUCCESS) {
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pContext->pMailSlotTransport = (PSMBCE_SERVER_TRANSPORT)pMsTransport;
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} else {
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pContext->pMailSlotTransport = NULL;
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}
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pContext->State = SmbCeServerMailSlotTransportConstructionEnd;
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pContext->Status = Status;
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return Status;
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}
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NTSTATUS
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MsUninitialize(
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PSMBCE_SERVER_TRANSPORT pTransport)
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/*++
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Routine Description:
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This routine uninitializes the transport instance
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Arguments:
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pVcTransport - the VC transport instance
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Return Value:
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STATUS_SUCCESS - the server transport construction has been uninitialzied.
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Other Status codes correspond to error situations.
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Notes:
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--*/
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PKEVENT pRundownEvent = pTransport->pRundownEvent;
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PSMBCE_SERVER_MAILSLOT_TRANSPORT pMsTransport = (PSMBCE_SERVER_MAILSLOT_TRANSPORT)pTransport;
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PAGED_CODE();
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if (pMsTransport->pTransportAddress != NULL) {
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RxFreePool(pMsTransport->pTransportAddress);
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}
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RxFreePool(pMsTransport);
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if (pRundownEvent != NULL) {
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KeSetEvent(pRundownEvent, 0, FALSE );
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}
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return Status;
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}
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NTSTATUS
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MsInitiateDisconnect(
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PSMBCE_SERVER_TRANSPORT pTransport)
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/*++
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Routine Description:
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This routine uninitializes the transport instance
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Arguments:
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pTransport - the mailslot transport instance
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Return Value:
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STATUS_SUCCESS - the server transport construction has been uninitialzied.
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Other Status codes correspond to error situations.
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--*/
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{
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PAGED_CODE();
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return STATUS_SUCCESS;
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}
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NTSTATUS
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MsTranceive(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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PSMB_EXCHANGE pExchange,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext)
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/*++
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Routine Description:
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This routine transmits/receives a SMB for a give exchange
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Arguments:
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pTransport - the transport instance
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pServerEntry - the server entry
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pExchange - the exchange instance issuing this SMB.
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SendOptions - options for send
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pSmbMdl - the SMB that needs to be sent.
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SendLength - length of data to be transmitted
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Return Value:
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STATUS_SUCCESS - the server call construction has been finalized.
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STATUS_PENDING - the open involves network traffic and the exchange has been
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queued for notification ( pServerPointer is set to NULL)
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Other Status codes correspond to error situations.
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--*/
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{
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PAGED_CODE();
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return RX_MAP_STATUS(NOT_SUPPORTED);
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}
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NTSTATUS
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MsReceive(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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PSMB_EXCHANGE pExchange)
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/*++
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Routine Description:
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This routine transmits/receives a SMB for a give exchange
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Arguments:
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pTransport - the transport instance
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pServerEntry - the server entry
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pExchange - the exchange instance issuing this SMB.
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Return Value:
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STATUS_PENDING - the request has been queued
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Other Status codes correspond to error situations.
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--*/
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{
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PAGED_CODE();
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ASSERT(FALSE);
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return RX_MAP_STATUS(NOT_SUPPORTED);
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}
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NTSTATUS
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MsSend(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext)
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/*++
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Routine Description:
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This routine opens/creates a server entry in the connection engine database
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Arguments:
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pTransport - the transport instance
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pServer - the recepient server
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pVc - the Vc on which the SMB is sent( if it is NULL SMBCE picks one)
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SendOptions - options for send
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pSmbMdl - the SMB that needs to be sent.
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SendLength - length of data to be sent
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Return Value:
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STATUS_SUCCESS - the server call construction has been finalized.
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STATUS_PENDING - the open involves network traffic and the exchange has been
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queued for notification ( pServerPointer is set to NULL)
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Other Status codes correspond to error situations.
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--*/
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{
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NTSTATUS Status = STATUS_CONNECTION_DISCONNECTED;
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NTSTATUS FinalStatus = STATUS_CONNECTION_DISCONNECTED;
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PSMBCE_SERVER_MAILSLOT_TRANSPORT pMsTransport;
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PSMBCE_TRANSPORT pDatagramTransport;
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BOOLEAN fAtleastOneSendWasSuccessful = FALSE;
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PSMBCE_TRANSPORT_ARRAY pTransportArray;
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RXCE_CONNECTION_INFORMATION RxCeConnectionInformation;
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PAGED_CODE();
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pMsTransport = (PSMBCE_SERVER_MAILSLOT_TRANSPORT)pTransport;
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RxCeConnectionInformation.RemoteAddress = pMsTransport->pTransportAddress;
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RxCeConnectionInformation.RemoteAddressLength = pMsTransport->TransportAddressLength;
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RxCeConnectionInformation.UserDataLength = 0;
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RxCeConnectionInformation.UserData = NULL;
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RxCeConnectionInformation.OptionsLength = 0;
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RxCeConnectionInformation.Options = NULL;
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pTransportArray = SmbCeReferenceTransportArray();
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if (pTransportArray == NULL) {
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RxDbgTrace(0, Dbg, ("MsSend : Transport not available.\n"));
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return STATUS_NETWORK_UNREACHABLE;
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}
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if (pTransportArray != NULL) {
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ULONG i;
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for(i=0;i<pTransportArray->Count;i++) {
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pDatagramTransport = pTransportArray->SmbCeTransports[i];
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if (pDatagramTransport->Active &&
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(pDatagramTransport->RxCeTransport.pProviderInfo->MaxDatagramSize > 0)) {
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Status = RxCeSendDatagram(
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&pDatagramTransport->RxCeAddress,
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&RxCeConnectionInformation,
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SendOptions,
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pSmbMdl,
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SendLength,
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NULL);
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if (!NT_SUCCESS(Status)) {
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RxDbgTrace(0, Dbg, ("MsSend: RxCeSendDatagram on transport (%lx) returned %lx\n",pTransport,Status));
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FinalStatus = Status;
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} else {
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fAtleastOneSendWasSuccessful = TRUE;
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}
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}
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}
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}
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SmbCeDereferenceTransportArray(pTransportArray);
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if (fAtleastOneSendWasSuccessful) {
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SmbCeSendCompleteInd(pServerEntry,pSendCompletionContext,RX_MAP_STATUS(SUCCESS));
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Status = RX_MAP_STATUS(SUCCESS);
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} else {
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Status = FinalStatus;
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}
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return Status;
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}
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NTSTATUS
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MsSendDatagram(
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PSMBCE_SERVER_TRANSPORT pTransport,
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PSMBCEDB_SERVER_ENTRY pServerEntry,
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ULONG SendOptions,
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PMDL pSmbMdl,
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ULONG SendLength,
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PVOID pSendCompletionContext)
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/*++
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Routine Description:
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This routine opens/creates a server entry in the connection engine database
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Arguments:
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|
|
pTransport - the transport instance
|
|
|
|
pServer - the recepient server
|
|
|
|
SendOptions - options for send
|
|
|
|
pSmbMdl - the SMB that needs to be sent.
|
|
|
|
SendLength - length of data to be sent
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESS - the server call construction has been finalized.
|
|
|
|
STATUS_PENDING - the open involves network traffic and the exchange has been
|
|
queued for notification ( pServerPointer is set to NULL)
|
|
|
|
Other Status codes correspond to error situations.
|
|
|
|
--*/
|
|
{
|
|
PAGED_CODE();
|
|
|
|
ASSERT(FALSE);
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
MsInitializeExchange(
|
|
PSMBCE_SERVER_TRANSPORT pTransport,
|
|
PSMB_EXCHANGE pExchange)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine initializes the transport information pertinent to a exchange
|
|
|
|
Arguments:
|
|
|
|
pTransport - the transport structure
|
|
|
|
pExchange - the exchange instance
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESS -
|
|
|
|
Other Status codes correspond to error situations.
|
|
|
|
--*/
|
|
{
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
MsUninitializeExchange(
|
|
PSMBCE_SERVER_TRANSPORT pTransport,
|
|
PSMB_EXCHANGE pExchange)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine uninitializes the transport information pertinent to a exchange
|
|
|
|
Arguments:
|
|
|
|
pTransport - the transport structure
|
|
|
|
pExchange - the exchange instance
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESS -
|
|
|
|
Other Status codes correspond to error situations.
|
|
|
|
--*/
|
|
{
|
|
PAGED_CODE();
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
VOID
|
|
MsTimerEventHandler(
|
|
PVOID pTransport)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine handles the periodic strobes to determine if the connection is still alive
|
|
|
|
Arguments:
|
|
|
|
pTransport - the recepient server
|
|
|
|
Notes:
|
|
|
|
This routine is not implemented for mail slot related transports
|
|
|
|
--*/
|
|
{
|
|
PAGED_CODE();
|
|
}
|
|
|
|
TRANSPORT_DISPATCH_VECTOR
|
|
MRxSmbMailSlotTransportDispatch = {
|
|
MsSend,
|
|
MsSendDatagram,
|
|
MsTranceive,
|
|
MsReceive,
|
|
MsTimerEventHandler,
|
|
MsInitializeExchange,
|
|
MsUninitializeExchange,
|
|
MsUninitialize,
|
|
MsInitiateDisconnect
|
|
};
|