/*++ Copyright (c) 1989 Microsoft Corporation Module Name: sbreqst.c Abstract: This module contains the Server Request thread procedure for the Sb API calls exported by the Server side of the Client-Server Runtime Subsystem to the Session Manager SubSystem. Author: Steve Wood (stevewo) 8-Oct-1990 Revision History: --*/ #include "csrsrv.h" PSB_API_ROUTINE CsrServerSbApiDispatch[ SbMaxApiNumber+1 ] = { CsrSbCreateSession, CsrSbTerminateSession, CsrSbForeignSessionComplete, NULL }; #if DBG PSZ CsrServerSbApiName[ SbMaxApiNumber+1 ] = { "SbCreateSession", "SbTerminateSession", "SbForeignSessionComplete", "Unknown Csr Sb Api Number" }; #endif // DBG NTSTATUS CsrSbApiHandleConnectionRequest( IN PSBAPIMSG Message ); NTSTATUS CsrSbApiRequestThread( IN PVOID Parameter ) { NTSTATUS Status; SBAPIMSG ReceiveMsg; PSBAPIMSG ReplyMsg; ReplyMsg = NULL; while (TRUE) { IF_CSR_DEBUG( LPC ) { DbgPrint( "CSRSS: Sb Api Request Thread waiting...\n" ); } Status = NtReplyWaitReceivePort( CsrSbApiPort, NULL, (PPORT_MESSAGE)ReplyMsg, (PPORT_MESSAGE)&ReceiveMsg ); if (Status != 0) { if (NT_SUCCESS( Status )) { continue; // Try again if alerted or a failure } else { IF_DEBUG { DbgPrint( "CSRSS: ReceivePort failed - Status == %X\n", Status ); } break; } } // // Check to see if this is a connection request and handle // if (ReceiveMsg.h.u2.s2.Type == LPC_CONNECTION_REQUEST) { CsrSbApiHandleConnectionRequest( &ReceiveMsg ); ReplyMsg = NULL; continue; } if ((ULONG)ReceiveMsg.ApiNumber >= SbMaxApiNumber) { IF_DEBUG { DbgPrint( "CSRSS: %lx is invalid Sb ApiNumber\n", ReceiveMsg.ApiNumber ); } ReceiveMsg.ApiNumber = SbMaxApiNumber; } #if DBG IF_CSR_DEBUG( LPC ) { DbgPrint( "CSRSS: %s Sb Api Request received from %lx.%lx\n", CsrServerSbApiName[ ReceiveMsg.ApiNumber ], ReceiveMsg.h.ClientId.UniqueProcess, ReceiveMsg.h.ClientId.UniqueThread ); } #endif // DBG ReplyMsg = &ReceiveMsg; if (ReceiveMsg.ApiNumber < SbMaxApiNumber) { if (!(*CsrServerSbApiDispatch[ ReceiveMsg.ApiNumber ])( &ReceiveMsg )) { ReplyMsg = NULL; } } else { ReplyMsg->ReturnedStatus = STATUS_NOT_IMPLEMENTED; } #if DBG IF_CSR_DEBUG( LPC ) { if (ReplyMsg != NULL) { DbgPrint( "CSRSS: %s Sb Api sending %lx status reply to %lx.%lx\n", CsrServerSbApiName[ ReceiveMsg.ApiNumber ], ReplyMsg->ReturnedStatus, ReplyMsg->h.ClientId.UniqueProcess, ReplyMsg->h.ClientId.UniqueThread ); } } #endif // DBG } NtTerminateThread( NtCurrentThread(), Status ); return( Status ); // Remove no return value warning. Parameter; // Remove unreferenced parameter warning. } NTSTATUS CsrSbApiHandleConnectionRequest( IN PSBAPIMSG Message ) { NTSTATUS st; REMOTE_PORT_VIEW ClientView; HANDLE CommunicationPort; // // The protocol for a subsystem is to connect to the session manager, // then to listen and accept a connection from the session manager // ClientView.Length = sizeof(ClientView); st = NtAcceptConnectPort( &CommunicationPort, NULL, (PPORT_MESSAGE)Message, TRUE, NULL, &ClientView ); if ( !NT_SUCCESS(st) ) { KdPrint(("CSRSS: Sb Accept Connection failed %lx\n",st)); return st; } st = NtCompleteConnectPort(CommunicationPort); if ( !NT_SUCCESS(st) ) { KdPrint(("CSRSS: Sb Complete Connection failed %lx\n",st)); } return st; }