/*++
Copyright (c) 1990-1993 Microsoft Corporation
Module Name:
server.c
Abstract:
This file contains commonly used server-side RPC functions,
such as starting and stoping RPC servers.
Author:
Dan Lafferty danl 09-May-1991
Environment:
User Mode - Win32
Revision History:
09-May-1991 Danl
Created
03-July-1991 JimK
Copied from a net-specific file.
18-Feb-1992 Danl
Added support for multiple endpoints & interfaces per server.
10-Feb-1993 RitaW
Copied to the NetWare tree so that the LPC transport can used for
the local case.
--*/
//
// INCLUDES
//
#include <nt.h> // DbgPrint
#include <ntrtl.h> // DbgPrint
#include <windef.h> // win32 typedefs
#include <rpc.h> // rpc prototypes
#include <nturtl.h> // needed for winbase.h
#include <winbase.h> // LocalAlloc
#include <stdlib.h> // for wcscpy wcscat
#include <tstr.h> // WCSSIZE
#include <nwrpcp.h>
#define NT_PIPE_PREFIX_W L"\\PIPE\\"
//
// GLOBALS
//
static CRITICAL_SECTION RpcpCriticalSection;
static DWORD RpcpNumInstances;
VOID
RpcpInitRpcServer(
VOID
)
/*++
Routine Description:
This function initializes the critical section used to protect the
global server handle and instance count.
Arguments:
none
Return Value:
none
--*/
{
InitializeCriticalSection(&RpcpCriticalSection);
RpcpNumInstances = 0;
}
RPC_STATUS
RpcpAddInterface(
IN LPWSTR InterfaceName,
IN RPC_IF_HANDLE InterfaceSpecification
)
/*++
Routine Description:
Starts an RPC Server, adds the address (or port/pipe), and adds the
interface (dispatch table).
Arguments:
InterfaceName - points to the name of the interface.
InterfaceSpecification - Supplies the interface handle for the
interface which we wish to add.
Return Value:
RPC_S_OK - Indicates the server was successfully started.
Other - Status values that may be returned by:
RpcServerRegisterIf()
RpcServerUseProtseqEp()
, or any RPC error codes, or any windows error codes that
can be returned by LocalAlloc.
--*/
{
RPC_STATUS RpcStatus;
LPWSTR Endpoint = NULL;
PSECURITY_DESCRIPTOR SecurityDescriptor = NULL;
BOOL Bool;
#if 0
// We need to concatenate \pipe\ to the front of the interface name.
Endpoint = LocalAlloc(0, sizeof(NT_PIPE_PREFIX_W) + WCSSIZE(InterfaceName));
if (Endpoint == 0) {
return(STATUS_NO_MEMORY);
}
wcscpy(Endpoint, NT_PIPE_PREFIX_W );
wcscat(Endpoint,InterfaceName);
#endif
//
// Croft up a security descriptor that will grant everyone
// all access to the object (basically, no security)
//
// We do this by putting in a NULL Dacl.
//
// BUGBUG: rpc should copy the security descriptor,
// Since it currently doesn't, simply allocate it for now and
// leave it around forever.
//
SecurityDescriptor = (PVOID) LocalAlloc(LMEM_FIXED, sizeof( SECURITY_DESCRIPTOR));
if (SecurityDescriptor == 0) {
RpcStatus = RPC_S_OUT_OF_MEMORY;
goto CleanExit;
}
InitializeSecurityDescriptor( SecurityDescriptor, SECURITY_DESCRIPTOR_REVISION );
Bool = SetSecurityDescriptorDacl (
SecurityDescriptor,
TRUE, // Dacl present
NULL, // NULL Dacl
FALSE // Not defaulted
);
//
// There's no way the above call can fail. But check anyway.
//
ASSERT( Bool );
#if 0
// Ignore the second argument for now.
RpcStatus = RpcServerUseProtseqEpW(L"ncacn_np", 10, Endpoint, SecurityDescriptor);
// If RpcpStartRpcServer and then RpcpStopRpcServer have already
// been called, the endpoint will have already been added but not
// removed (because there is no way to do it). If the endpoint is
// already there, it is ok.
if ( (RpcStatus != RPC_S_OK)
&& (RpcStatus != RPC_S_DUPLICATE_ENDPOINT)) {
KdPrint(("RpcServerUseProtseqW failed! rpcstatus = %u\n",RpcStatus));
goto CleanExit;
}
#endif // #if 0
RpcStatus = RpcServerUseProtseqEpW(L"ncalrpc", 10, InterfaceName, SecurityDescriptor);
// If RpcpStartRpcServer and then RpcpStopRpcServer have already
// been called, the endpoint will have already been added but not
// removed (because there is no way to do it). If the endpoint is
// already there, it is ok.
if ((RpcStatus != RPC_S_OK)
&& (RpcStatus != RPC_S_DUPLICATE_ENDPOINT)) {
KdPrint(("RpcServerUseProtseqW failed! rpcstatus = %u\n",RpcStatus));
goto CleanExit;
}
RpcStatus = RpcServerRegisterIf(InterfaceSpecification, 0, 0);
CleanExit:
if ( Endpoint != NULL ) {
LocalFree(Endpoint);
}
return RpcStatus;
}
RPC_STATUS
RpcpStartRpcServer(
IN LPWSTR InterfaceName,
IN RPC_IF_HANDLE InterfaceSpecification
)
/*++
Routine Description:
Starts an RPC Server, adds the address (or port/pipe), and adds the
interface (dispatch table).
Arguments:
InterfaceName - points to the name of the interface.
InterfaceSpecification - Supplies the interface handle for the
interface which we wish to add.
Return Value:
RPC_S_OK - Indicates the server was successfully started.
Other - Status values that may be returned by:
RpcServerRegisterIf()
RpcServerUseProtseqEp()
, or any RPC error codes, or any windows error codes that
can be returned by LocalAlloc.
--*/
{
RPC_STATUS RpcStatus;
EnterCriticalSection(&RpcpCriticalSection);
RpcStatus = RpcpAddInterface( InterfaceName,
InterfaceSpecification );
if ( RpcStatus != RPC_S_OK ) {
LeaveCriticalSection(&RpcpCriticalSection);
return RpcStatus;
}
RpcpNumInstances++;
if (RpcpNumInstances == 1) {
// The first argument specifies the minimum number of threads to
// be created to handle calls; the second argument specifies the
// maximum number of concurrent calls allowed. The last argument
// indicates not to wait.
RpcStatus = RpcServerListen(1,12345, 1);
if ( RpcStatus == RPC_S_ALREADY_LISTENING ) {
RpcStatus = RPC_S_OK;
}
}
LeaveCriticalSection(&RpcpCriticalSection);
return RpcStatus;
}
RPC_STATUS
RpcpDeleteInterface(
IN RPC_IF_HANDLE InterfaceSpecification
)
/*++
Routine Description:
Deletes the interface. This is likely
to be caused by an invalid handle. If an attempt to add the same
interface or address again, then an error will be generated at that
time.
Arguments:
InterfaceSpecification - A handle for the interface that is to be removed.
Return Value:
RPC_S_OK, or any RPC error codes that can be returned from
RpcServerUnregisterIf.
--*/
{
RPC_STATUS RpcStatus;
RpcStatus = RpcServerUnregisterIf(InterfaceSpecification, 0, 1);
return RpcStatus;
}
RPC_STATUS
RpcpStopRpcServer(
IN RPC_IF_HANDLE InterfaceSpecification
)
/*++
Routine Description:
Deletes the interface. This is likely
to be caused by an invalid handle. If an attempt to add the same
interface or address again, then an error will be generated at that
time.
Arguments:
InterfaceSpecification - A handle for the interface that is to be removed.
Return Value:
RPC_S_OK, or any RPC error codes that can be returned from
RpcServerUnregisterIf.
--*/
{
RPC_STATUS RpcStatus;
RpcStatus = RpcServerUnregisterIf(InterfaceSpecification, 0, 1);
EnterCriticalSection(&RpcpCriticalSection);
RpcpNumInstances--;
if (RpcpNumInstances == 0) {
RpcMgmtStopServerListening(0);
RpcMgmtWaitServerListen();
}
LeaveCriticalSection(&RpcpCriticalSection);
return RpcStatus;
}