293 lines
9.7 KiB
C
293 lines
9.7 KiB
C
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/*++
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Copyright (c) 1991-1993 Microsoft Corporation
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Module Name:
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RpcFail.c
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Abstract:
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This routine is a captive of the NET_REMOTE_RPC_FAILED macro in
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netrpc.h. See that header file for more info.
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Author:
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John Rogers (JohnRo) 01-Nov-1991
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Environment:
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User Mode - Win32
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Only runs under NT; has an NT-specific interface (with Win32 types).
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Requires ANSI C extensions: slash-slash comments, long external names.
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Revision History:
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01-Nov-1991 JohnRo
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Created this routine as part of fixing RAID 3414: allow explicit local
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server name.
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07-Nov-1991 JohnRo
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RAID 4186: assert in RxNetShareAdd and other DLL stub problems.
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12-Nov-1991 JohnRo
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Return correct error code for server not started.
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17-Jan-1992 JohnRo
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Added NET_REMOTE_RPC_FAILED_W for UNICODE-only server names.
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08-Apr-1992 JohnRo
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Clarify that ServiceName parameter is OPTIONAL.
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12-Jan-1993 JohnRo
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RAID 1586: NetReplSetInfo fails after stop service. (Also fix error
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code if remote RPC service is not started.)
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Use PREFIX_ equates.
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Use NetpKdPrint where possible.
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30-Jun-1993 JohnRo
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Perhaps we don't need to query if remote service is started.
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Also handle RPC_S_SERVER_TOO_BUSY.
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--*/
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// These must be included first:
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#include <nt.h> // IN, etc.
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#include <windef.h> // LPVOID, etc.
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#include <lmcons.h> // NET_API_STATUS, etc.
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#include <rpc.h> // Needed by NetRpc.h
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// These may be included in any order:
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#include <debuglib.h> // IF_DEBUG().
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#include <lmerr.h> // NERR_Success, etc.
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#include <lmremutl.h> // NetpRemoteComputerSupports(), SUPPORTS_ stuff
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#include <lmsname.h> // SERVICE_ equates.
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#include <netdebug.h> // FORMAT_ equates, LPDEBUG_STRING, NetpKdPrint(), etc.
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#include <netlib.h> // NetpIsServiceStarted().
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#include <netrpc.h> // My prototypes, NET_REMOTE_FLAG_ equates.
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#include <prefix.h> // PREFIX_ equates.
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#include <rpcutil.h> // NetpRpcStatusToApiStatus().
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#include <tstring.h> // NetpAlloc{type}From{type}(), TCHAR_EOS, STRICMP().
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#define UnexpectedMsg( debugString ) \
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{ \
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NetpKdPrint(( PREFIX_NETAPI \
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FORMAT_LPDEBUG_STRING ": unexpected situation... " \
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debugString ", rpc status is " FORMAT_RPC_STATUS ".\n", \
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DebugName, RpcStatus )); \
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}
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NET_API_STATUS
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NetpHandleRpcFailure(
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IN LPDEBUG_STRING DebugName, // Used by UnexpectedMsg().
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IN RPC_STATUS RpcStatus, // Used by UnexpectedMsg().
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IN LPTSTR ServerNameValue OPTIONAL,
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IN LPTSTR ServiceName OPTIONAL,
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IN DWORD Flags, // NET_REMOTE_FLAG_ stuff.
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OUT LPBOOL TryDownlevel
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)
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{
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NET_API_STATUS ApiStatus;
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*TryDownlevel = FALSE; // Be pesimistic until we know for sure.
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if (RpcStatus == RPC_S_OK) {
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//
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// Exception without error code? Don't try the downlevel call.
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// In theory, this should never happen.
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//
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UnexpectedMsg( "exception with RPC_S_OK" );
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return (NERR_InternalError);
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} else if (RpcStatus == ERROR_ACCESS_DENIED) {
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//
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// Exception was access denied, so it does no good to go any further
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//
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return (RpcStatus);
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}
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else
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{ // exception with error code
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DWORD OptionsSupported = 0;
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//
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// Learn about the machine. This is fairly easy since the
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// NetRemoteComputerSupports also handles the local machine (whether
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// or not a server name is given).
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//
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ApiStatus = NetRemoteComputerSupports(
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ServerNameValue,
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SUPPORTS_RPC | SUPPORTS_LOCAL, // options wanted
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&OptionsSupported);
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if (ApiStatus != NERR_Success) {
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// This is where machine not found gets handled.
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return (ApiStatus);
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}
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if (OptionsSupported & SUPPORTS_LOCAL) {
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//
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// Local service not started?
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//
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if (RpcStatus == RPC_S_SERVER_UNAVAILABLE ||
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RpcStatus == RPC_S_UNKNOWN_IF ) {
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if ( (Flags & NET_REMOTE_FLAG_SVC_CTRL) == 0 ) {
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NetpAssert( ServiceName != NULL );
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NetpAssert( (*ServiceName) != TCHAR_EOS );
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//
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// This isn't a service controller API, so we can ask the
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// service controller if the service is started.
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//
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if ( !NetpIsServiceStarted(ServiceName)) {
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// Local service not started.
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if (STRICMP( ServiceName,
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(LPTSTR) SERVICE_WORKSTATION) == 0) {
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return (NERR_WkstaNotStarted);
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} else if (STRICMP( ServiceName,
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(LPTSTR) SERVICE_SERVER) == 0) {
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return (NERR_ServerNotStarted);
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} else {
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return (NERR_ServiceNotInstalled);
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}
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/*NOTREACHED*/
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} else { // local service started
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//
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// In theory, this shouldn't be possible,
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// but just in case...
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//
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UnexpectedMsg("local, can't connect, started");
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return (NetpRpcStatusToApiStatus(RpcStatus));
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}
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/*NOTREACHED*/
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} else { // local, can't connect, service controller API
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//
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// Perhaps service controller died? Bug in RPC?
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// Service too busy?
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// Or, may just be out of memory trying to connect...
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//
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UnexpectedMsg(
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"local, can't connect, service controller API" );
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return (NetpRpcStatusToApiStatus(RpcStatus));
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}
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/*NOTREACHED*/
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} else {
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// Local and something besides RPC_S_SERVER_UNAVAILABLE.
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// Perhaps we just ran out of memory, or service too busy.
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UnexpectedMsg( "local, not RPC_S_SERVER_UNAVAILABLE" );
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return (NetpRpcStatusToApiStatus(RpcStatus));
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}
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/*NOTREACHED*/
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} else { // remote machine
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//
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// Local workstation is not started? (It must be in order to
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// remote downlevel APIs to the other system.)
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//
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if ( (RpcStatus == RPC_S_SERVER_UNAVAILABLE) &&
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( !NetpIsServiceStarted( (LPTSTR) SERVICE_WORKSTATION))) {
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return (NERR_WkstaNotStarted);
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} else if (RpcStatus == RPC_S_SERVER_UNAVAILABLE) {
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//
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// Local wksta is started, assume remote service isn't...
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// Remote RPC binding failed. Find out why.
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//
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IF_DEBUG(DLLSTUBS) {
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NetpKdPrint(( PREFIX_NETAPI
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FORMAT_LPDEBUG_STRING
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": RPC binding failed.\n", DebugName));
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}
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//
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// See if the machine supports RPC. If it does, we do not
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// try the downlevel calls, but just return the error.
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//
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if (OptionsSupported & SUPPORTS_RPC) {
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if ( (Flags & NET_REMOTE_FLAG_SVC_CTRL) == 0 ) {
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NetpAssert( ServiceName != NULL );
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NetpAssert( (*ServiceName) != TCHAR_EOS );
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//
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// This isn't a service controller API, so we can
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// generate an error code based on the service name.
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//
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if (STRICMP( ServiceName,
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(LPTSTR) SERVICE_WORKSTATION) == 0) {
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return (NERR_WkstaNotStarted);
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} else if (STRICMP( ServiceName,
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(LPTSTR) SERVICE_SERVER) == 0) {
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return (NERR_ServerNotStarted);
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} else {
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return (NERR_ServiceNotInstalled);
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}
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/*NOTREACHED*/
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} else { // local, can't connect, service controller API
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UnexpectedMsg( "remote svc ctrl: "
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"machine supports RPC, or other error." );
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return (NetpRpcStatusToApiStatus(RpcStatus));
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}
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/*NOTREACHED*/
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} else { // need to call downlevel
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// NetpKdPrint(( PREFIX_NETAPI
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// FORMAT_LPDEBUG_STRING
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// ": call downlevel.\n", DebugName ));
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//
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// Caller would insert a call to some RxNet routine
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// after the NET_REMOTE_RPC_FAILED macro. This flag is how
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// we tell the macro whether or not to fall into that call.
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//
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*TryDownlevel = TRUE;
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return (ERROR_NOT_SUPPORTED); // any error code will do.
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} // need to call downlevel
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/*NOTREACHED*/
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} else {
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//
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// Perhaps just out of memory somewhere, server too busy, etc.
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//
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UnexpectedMsg("remote, not RPC_S_SERVER_UNAVAILABLE");
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return (NetpRpcStatusToApiStatus(RpcStatus));
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}
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/*NOTREACHED*/
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} // remote machine
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/*NOTREACHED*/
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} // exception with error code
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/*NOTREACHED*/
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} // NetpHandleRpcFailure
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