126 lines
2.8 KiB
C
126 lines
2.8 KiB
C
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/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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smcsup.c
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Abstract:
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Session Manager Client Support APIs
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Author:
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Mark Lucovsky (markl) 05-Oct-1989
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Revision History:
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--*/
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#include "smdllp.h"
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#include <string.h>
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NTSTATUS
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SmConnectToSm(
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IN PUNICODE_STRING SbApiPortName OPTIONAL,
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IN HANDLE SbApiPort OPTIONAL,
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IN ULONG SbImageType OPTIONAL,
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OUT PHANDLE SmApiPort
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)
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/*++
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Routine Description:
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This function is used to connect to the NT Session Manager
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Arguments:
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SbApiPortName - Supplies the name of the sub system's session management
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API port (for Sb APIs). That the session manager is to connect with.
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SbApiPort - Supplies a port handle to the connection port where the
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subsystem's session management (Sb) APIs are exported.
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SbImageType - Supplies the image type that the connecting subsystem
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serves.
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SmApiPort - Returns the communication port which is connected to the
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session manager and over which Sm APIs may be made.
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Return Value:
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TBD.
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--*/
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{
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NTSTATUS st;
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UNICODE_STRING PortName;
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ULONG ConnectInfoLength;
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PSBCONNECTINFO ConnectInfo;
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SBAPIMSG Message;
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SECURITY_QUALITY_OF_SERVICE DynamicQos;
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//
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// Set up the security quality of service parameters to use over the
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// port. Use the most efficient (least overhead) - which is dynamic
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// rather than static tracking.
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//
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DynamicQos.ImpersonationLevel = SecurityImpersonation;
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DynamicQos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
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DynamicQos.EffectiveOnly = TRUE;
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RtlInitUnicodeString(&PortName,L"\\SmApiPort");
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ConnectInfoLength = sizeof(SBCONNECTINFO);
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ConnectInfo = &Message.ConnectionRequest;
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//
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// Subsystems must specify an SbApiPortName
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//
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if ( ARGUMENT_PRESENT(SbApiPortName) ) {
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if ( !ARGUMENT_PRESENT(SbApiPort) ) {
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return STATUS_INVALID_PARAMETER_MIX;
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}
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if ( !SbImageType ) {
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return STATUS_INVALID_PARAMETER_MIX;
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}
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RtlMoveMemory(
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ConnectInfo->EmulationSubSystemPortName,
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SbApiPortName->Buffer,
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SbApiPortName->Length
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);
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ConnectInfo->EmulationSubSystemPortName[SbApiPortName->Length>>1] = UNICODE_NULL;
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ConnectInfo->SubsystemImageType = SbImageType;
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} else {
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ConnectInfo->EmulationSubSystemPortName[0] = UNICODE_NULL;
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ConnectInfo->SubsystemImageType = 0;
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}
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st = NtConnectPort(
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SmApiPort,
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&PortName,
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&DynamicQos,
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NULL,
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NULL,
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NULL,
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ConnectInfo,
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&ConnectInfoLength
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);
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if ( !NT_SUCCESS(st) ) {
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KdPrint(("SmConnectToSm: Connect to Sm failed %lx\n",st));
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return st;
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}
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return STATUS_SUCCESS;
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}
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