/*++
Copyright (c) 1990-1992 Microsoft Corporation
Module Name:
brmain.c
Abstract:
This is the main routine for the NT LAN Manager Browser service.
Author:
Larry Osterman (LarryO) 3-23-92
Environment:
User Mode - Win32
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
#if DBG
#endif
//-------------------------------------------------------------------//
// //
// Global variables //
// //
//-------------------------------------------------------------------//
BR_GLOBAL_DATA
BrGlobalData = {0};
ULONG
BrDefaultRole = {0};
PLMSVCS_GLOBAL_DATA BrLmsvcsGlobalData=NULL;
HANDLE BrDllReferenceHandle=NULL;
//-------------------------------------------------------------------//
// //
// Function prototypes //
// //
//-------------------------------------------------------------------//
NET_API_STATUS
BrInitializeBrowser(
OUT LPDWORD BrInitState
);
NET_API_STATUS
BrInitializeBrowserService(
OUT LPDWORD BrInitState
);
VOID
BrUninitializeBrowser(
IN DWORD BrInitState
);
VOID
BrShutdownBrowser(
IN NET_API_STATUS ErrorCode,
IN DWORD BrInitState
);
VOID
BrHandleError(
IN BR_ERROR_CONDITION FailingCondition,
IN NET_API_STATUS Status,
IN DWORD BrInitState
);
VOID
BrowserControlHandler(
IN DWORD Opcode
);
VOID
LMSVCS_ENTRY_POINT( // (BROWSER_main)
DWORD NumArgs,
LPTSTR *ArgsArray,
PLMSVCS_GLOBAL_DATA LmsvcsGlobalData,
IN HANDLE SvcRefHandle
)
/*++
Routine Description:
This is the main routine of the Browser Service which registers
itself as an RPC server and notifies the Service Controller of the
Browser service control entry point.
Arguments:
NumArgs - Supplies the number of strings specified in ArgsArray.
ArgsArray - Supplies string arguments that are specified in the
StartService API call. This parameter is ignored by the
Browser service.
Return Value:
None.
--*/
{
DWORD BrInitState = 0;
UNREFERENCED_PARAMETER(NumArgs);
UNREFERENCED_PARAMETER(ArgsArray);
BrDllReferenceHandle = SvcRefHandle;
//
// Save the LMSVCS global data for future use.
//
BrLmsvcsGlobalData = LmsvcsGlobalData;
if (BrInitializeBrowserService(&BrInitState) != NERR_Success) {
return;
}
//
// Process requests in this thread, and wait for termination.
//
//
// Set the browser threads to time critical priority.
//
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);
BrWorkerThread((PVOID)-1);
BrShutdownBrowser(
NERR_Success,
BrInitState
);
return;
}
NET_API_STATUS
BrInitializeBrowserService(
OUT LPDWORD BrInitState
)
/*++
Routine Description:
This function initializes the Browser service.
Arguments:
BrInitState - Returns a flag to indicate how far we got with initializing
the Browser service before an error occured.
Return Value:
NET_API_STATUS - NERR_Success or reason for failure.
--*/
{
NET_API_STATUS Status;
// HMODULE BrGlobalServerHandle = NULL;
//
// Initialize all the status fields so that subsequent calls to
// SetServiceStatus need to only update fields that changed.
//
BrGlobalData.Status.dwServiceType = SERVICE_WIN32;
BrGlobalData.Status.dwCurrentState = SERVICE_START_PENDING;
BrGlobalData.Status.dwControlsAccepted = 0;
BrGlobalData.Status.dwCheckPoint = 0;
BrGlobalData.Status.dwWaitHint = BR_WAIT_HINT_TIME;
SET_SERVICE_EXITCODE(
NO_ERROR,
BrGlobalData.Status.dwWin32ExitCode,
BrGlobalData.Status.dwServiceSpecificExitCode
);
#if DBG
BrInitializeTraceLog();
#endif
BrPrint(( BR_INIT, "Browser starting\n"));
//
// Initialize Browser to receive service requests by registering the
// control handler.
//
if ((BrGlobalData.StatusHandle = RegisterServiceCtrlHandler(
SERVICE_BROWSER,
BrowserControlHandler
)) == (SERVICE_STATUS_HANDLE) NULL) {
Status = GetLastError();
BR_HANDLE_ERROR(BrErrorRegisterControlHandler);
return Status;
}
//
// Create an event which is used by the service control handler to notify
// the Browser service that it is time to terminate.
//
if ((BrGlobalData.TerminateNowEvent =
CreateEvent(
NULL, // Event attributes
TRUE, // Event must be manually reset
FALSE,
NULL // Initial state not signalled
)) == NULL) {
Status = GetLastError();
BR_HANDLE_ERROR(BrErrorCreateTerminateEvent);
return Status;
}
(*BrInitState) |= BR_TERMINATE_EVENT_CREATED;
//
// Notify the Service Controller for the first time that we are alive
// and we are start pending
//
if ((Status = BrGiveInstallHints( SERVICE_START_PENDING )) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorNotifyServiceController);
return Status;
}
//
// Open a handle to the driver.
//
if ((Status = BrOpenDgReceiver()) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorInitializeNetworks);
return Status;
}
BrPrint(( BR_INIT, "Devices initialized.\n"));
(*BrInitState) |= BR_DEVICES_INITIALIZED;
//
// Initialize NetBios synchronization with the service controller.
//
BrLmsvcsGlobalData->NetBiosOpen();
(*BrInitState) |= BR_NETBIOS_INITIALIZED;
//
// Read the configuration information to initialize the browser service.
//
if ((Status = BrInitializeBrowser(BrInitState)) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorStartBrowser);
return Status;
}
BrPrint(( BR_INIT, "Browser initialized.\n"));
(*BrInitState) |= BR_BROWSER_INITIALIZED;
//
// Service install still pending.
//
(void) BrGiveInstallHints( SERVICE_START_PENDING );
//
// Initialize the browser service to receive RPC requests
//
// NOTE: Now all RPC servers in services.exe share the same pipe name.
// However, in order to support communication with version 1.0 of WinNt,
// it is necessary for the Client Pipe name to remain the same as
// it was in version 1.0. Mapping to the new name is performed in
// the Named Pipe File System code.
//
if ((Status = BrLmsvcsGlobalData->StartRpcServer(
BrLmsvcsGlobalData->SvcsRpcPipeName,
browser_ServerIfHandle
)) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorStartRpcServer);
return Status;
}
(*BrInitState) |= BR_RPC_SERVER_STARTED;
//
// Update our announcement bits based on our current role.
//
// This will force the server to announce itself. It will also update
// the browser information in the driver.
//
//
if ((Status = BrUpdateAnnouncementBits( NULL, BrGlobalData.StatusHandle)) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorNotifyServiceController);
return Status;
}
BrPrint(( BR_INIT, "Network status updated.\n"));
//
// We are done with starting the browser service. Tell Service
// Controller our new status.
//
if ((Status = BrGiveInstallHints( SERVICE_RUNNING )) != NERR_Success) {
BR_HANDLE_ERROR(BrErrorNotifyServiceController);
return Status;
}
BrPrint(( BR_MAIN, "Successful Initialization\n"));
return NERR_Success;
}
NET_API_STATUS
BrInitializeBrowser(
OUT LPDWORD BrInitState
)
/*++
Routine Description:
This function shuts down the Browser service.
Arguments:
ErrorCode - Supplies the error code of the failure
BrInitState - Supplies a flag to indicate how far we got with initializing
the Browser service before an error occured, thus the amount of
clean up needed.
Return Value:
None.
--*/
{
NET_API_STATUS NetStatus;
SERVICE_STATUS ServiceStatus;
//
// The browser depends on the following services being started:
//
// WORKSTATION (to initialize the bowser driver)
// SERVER (to receive remote APIs)
//
// Check to make sure that the services are started.
//
if ((NetStatus = CheckForService(SERVICE_WORKSTATION, &ServiceStatus)) != NERR_Success) {
LPWSTR SubStrings[2];
CHAR ServiceStatusString[10];
WCHAR ServiceStatusStringW[10];
SubStrings[0] = SERVICE_WORKSTATION;
_ultoa(ServiceStatus.dwCurrentState, ServiceStatusString, 10);
mbstowcs(ServiceStatusStringW, ServiceStatusString, 10);
SubStrings[1] = ServiceStatusStringW;
BrLogEvent(EVENT_BROWSER_DEPENDANT_SERVICE_FAILED, NetStatus, 2, SubStrings);
goto Cleanup;
}
if ((NetStatus = CheckForService(SERVICE_SERVER, &ServiceStatus)) != NERR_Success) {
LPWSTR SubStrings[2];
CHAR ServiceStatusString[10];
WCHAR ServiceStatusStringW[10];
SubStrings[0] = SERVICE_SERVER;
_ultoa(ServiceStatus.dwCurrentState, ServiceStatusString, 10);
mbstowcs(ServiceStatusStringW, ServiceStatusString, 10);
SubStrings[1] = ServiceStatusStringW;
BrLogEvent(EVENT_BROWSER_DEPENDANT_SERVICE_FAILED, NetStatus, 2, SubStrings);
goto Cleanup;
}
BrPrint(( BR_INIT, "Dependant services are running.\n"));
//
// We now know that our dependant services are started.
//
// Look up our configuration information.
//
if ((NetStatus = BrGetBrowserConfiguration()) != NERR_Success) {
goto Cleanup;
}
BrPrint(( BR_INIT, "Configuration read.\n"));
(*BrInitState) |= BR_CONFIG_INITIALIZED;
//
// Initialize the browser statistics now.
//
NumberOfServerEnumerations = 0;
NumberOfDomainEnumerations = 0;
NumberOfOtherEnumerations = 0;
NumberOfMissedGetBrowserListRequests = 0;
InitializeCriticalSection(&BrowserStatisticsLock);
//
// MaintainServerList == -1 means No
//
if (BrInfo.MaintainServerList == -1) {
BrPrint(( BR_CRITICAL, "MaintainServerList value set to NO. Stopping\n"));
NetStatus = NERR_BrowserConfiguredToNotRun;
goto Cleanup;
}
//
// Initialize the worker threads.
//
(void) BrGiveInstallHints( SERVICE_START_PENDING );
if ((NetStatus = BrWorkerInitialization()) != NERR_Success) {
goto Cleanup;
}
BrPrint(( BR_INIT, "Worker threads created.\n"));
(*BrInitState) |= BR_THREADS_STARTED;
//
// Initialize the networks module
//
(void) BrGiveInstallHints( SERVICE_START_PENDING );
BrInitializeNetworks();
(*BrInitState) |= BR_NETWORKS_INITIALIZED;
//
// Initialize the Domains module (and create networks for primary domain)
//
(void) BrGiveInstallHints( SERVICE_START_PENDING );
NetStatus = BrInitializeDomains();
if ( NetStatus != NERR_Success ) {
goto Cleanup;
}
(*BrInitState) |= BR_DOMAINS_INITIALIZED;
NetStatus = NERR_Success;
//
// Free Locally used resources
//
Cleanup:
return NetStatus;
}
VOID
BrUninitializeBrowser(
IN DWORD BrInitState
)
/*++
Routine Description:
This function shuts down the parts of the browser service started by
BrInitializeBrowser.
Arguments:
BrInitState - Supplies a flag to indicate how far we got with initializing
the Browser service before an error occured, thus the amount of
clean up needed.
Return Value:
None.
--*/
{
if (BrInitState & BR_CONFIG_INITIALIZED) {
BrDeleteConfiguration(BrInitState);
}
if (BrInitState & BR_DOMAINS_INITIALIZED) {
BrUninitializeDomains();
}
if (BrInitState & BR_NETWORKS_INITIALIZED) {
BrUninitializeNetworks(BrInitState);
}
DeleteCriticalSection(&BrowserStatisticsLock);
}
NET_API_STATUS
BrElectMasterOnNet(
IN PNETWORK Network,
IN PVOID Context
)
{
DWORD Event = (DWORD)Context;
PWSTR SubString[1];
REQUEST_ELECTION ElectionRequest;
if (!LOCK_NETWORK(Network)) {
return NERR_InternalError;
}
if (!(Network->Flags & NETWORK_RAS)) {
//
// Indicate we're forcing an election in the event log.
//
SubString[0] = Network->NetworkName.Buffer;
BrLogEvent(Event, STATUS_SUCCESS, 1, SubString);
//
// Force an election on this net.
//
ElectionRequest.Type = Election;
ElectionRequest.ElectionRequest.Version = 0;
ElectionRequest.ElectionRequest.Criteria = 0;
ElectionRequest.ElectionRequest.TimeUp = 0;
ElectionRequest.ElectionRequest.MustBeZero = 0;
ElectionRequest.ElectionRequest.ServerName[0] = '\0';
SendDatagram( BrDgReceiverDeviceHandle,
&Network->NetworkName,
&Network->DomainInfo->DomUnicodeDomainNameString,
Network->DomainInfo->DomUnicodeDomainName,
BrowserElection,
&ElectionRequest,
sizeof(ElectionRequest));
}
UNLOCK_NETWORK(Network);
return NERR_Success;
}
VOID
BrForceElectionOnAllNetworks(
IN PDOMAIN_INFO DomainInfo,
IN DWORD Event
)
/*++
Routine Description:
For an election on all networks for a specified domain.
Arguments:
DomainInfo - Specifies the domain to force the election on
Event - Specifies the reason the election is being forced
Return Value:
None.
--*/
{
BrEnumerateNetworksForDomain(DomainInfo, BrElectMasterOnNet, (PVOID)Event);
}
NET_API_STATUS
BrShutdownBrowserForNet(
IN PNETWORK Network,
IN PVOID Context
)
{
SERVICE_STATUS_HANDLE Handle = (SERVICE_STATUS_HANDLE)Context;
NET_API_STATUS NetStatus;
if (!LOCK_NETWORK(Network)) {
return NERR_InternalError;
}
NetStatus = BrUpdateBrowserStatus(Network, 0);
if ( NetStatus != NERR_Success ) {
BrPrint(( BR_CRITICAL,
"%ws: %ws: BrShutdownBrowserForNet: Cannot BrUpdateBrowserStatus %ld\n",
Network->DomainInfo->DomUnicodeDomainName,
Network->NetworkName.Buffer,
NetStatus ));
}
//
// Tell the server that the browser is stopping, so it will announce
// that at the browser is not operational.
//
NetStatus = I_NetServerSetServiceBitsEx(
NULL,
Network->DomainInfo->DomUnicodeComputerName,
Network->NetworkName.Buffer,
BROWSER_SERVICE_BITS_OF_INTEREST,
0,
TRUE);
if ( NetStatus != NERR_Success ) {
BrPrint(( BR_CRITICAL,
"%ws: %ws: BrShutdownBrowserForNet: Cannot I_NetServerSetServiceBitsEx %ld\n",
Network->DomainInfo->DomUnicodeDomainName,
Network->NetworkName.Buffer,
NetStatus ));
}
//
// Force an election if we are the master for this network - this will
// cause someone else to become master.
//
if ( Network->Role & ROLE_MASTER ) {
BrElectMasterOnNet(Network, (PVOID)EVENT_BROWSER_ELECTION_SENT_LANMAN_NT_STOPPED);
}
UNLOCK_NETWORK(Network);
//
// Continue with next network regardless of success or failure of this one.
//
return NERR_Success;
}
VOID
BrShutdownBrowser (
IN NET_API_STATUS ErrorCode,
IN DWORD BrInitState
)
/*++
Routine Description:
This function shuts down the Browser service.
Arguments:
ErrorCode - Supplies the error code of the failure
BrInitState - Supplies a flag to indicate how far we got with initializing
the Browser service before an error occured, thus the amount of
clean up needed.
Return Value:
None.
--*/
{
if (BrInitState & BR_RPC_SERVER_STARTED) {
//
// Stop the RPC server
//
BrLmsvcsGlobalData->StopRpcServer(browser_ServerIfHandle);
}
//
// Don't need to ask redirector to unbind from its transports when
// cleaning up because the redirector will tear down the bindings when
// it stops.
//
if (BrInitState & BR_DEVICES_INITIALIZED) {
if (BrInitState & BR_NETWORKS_INITIALIZED) {
BrEnumerateNetworks(BrShutdownBrowserForNet, (PVOID)BrGlobalData.StatusHandle);
}
//
// Shut down the datagram receiver.
//
// This will cancel all I/O outstanding on the browser for this
// handle.
//
BrShutdownDgReceiver();
}
//
// Clean up the browser threads.
//
// This will guarantee that there are no operations outstanding in
// the browser when it is shut down.
//
if (BrInitState & BR_THREADS_STARTED) {
BrWorkerKillThreads();
}
if (BrInitState & BR_BROWSER_INITIALIZED) {
//
// Shut down the browser (including removing networks).
//
BrUninitializeBrowser(BrInitState);
}
//
// Now that we're sure no one will try to use the worker threads,
// Unitialize the subsystem.
//
if (BrInitState & BR_THREADS_STARTED) {
BrWorkerTermination();
}
if (BrInitState & BR_PRELOAD_DOMAIN_LIST_READ) {
BrWanUninitialize();
}
if (BrInitState & BR_TERMINATE_EVENT_CREATED) {
//
// Close handle to termination event
//
CloseHandle(BrGlobalData.TerminateNowEvent);
}
if (BrInitState & BR_DEVICES_INITIALIZED) {
NtClose(BrDgReceiverDeviceHandle);
BrDgReceiverDeviceHandle = NULL;
}
//
// Tell service controller we are done using NetBios.
//
if (BrInitState & BR_NETBIOS_INITIALIZED) {
BrLmsvcsGlobalData->NetBiosClose();
}
#if DBG
BrUninitializeTraceLog();
#endif
//
// We are done with cleaning up. Tell Service Controller that we are
// stopped.
//
SET_SERVICE_EXITCODE(
ErrorCode,
BrGlobalData.Status.dwWin32ExitCode,
BrGlobalData.Status.dwServiceSpecificExitCode
);
(void) BrGiveInstallHints( SERVICE_STOPPED );
}
VOID
BrHandleError(
IN BR_ERROR_CONDITION FailingCondition,
IN NET_API_STATUS Status,
IN DWORD BrInitState
)
/*++
Routine Description:
This function handles a Browser service error condition. If the error
condition is fatal, it shuts down the Browser service.
Arguments:
FailingCondition - Supplies a value which indicates what the failure is.
Status - Supplies the status code for the failure.
BrInitState - Supplies a flag to indicate how far we got with initializing
the Browser service before an error occured, thus the amount of
clean up needed.
Return Value:
None.
--*/
{
switch (FailingCondition) {
case BrErrorRegisterControlHandler:
BrPrint(( BR_CRITICAL, "Cannot register control handler "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorCreateTerminateEvent:
BrPrint(( BR_CRITICAL, "Cannot create done event "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorNotifyServiceController:
BrPrint(( BR_CRITICAL, "SetServiceStatus error "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorInitLsa:
BrPrint(( BR_CRITICAL, "LSA initialization error "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorCheckDependentServices:
BrPrint(( BR_CRITICAL, "Unable to determine status of dependant services "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorGetConfiguration:
BrPrint(( BR_CRITICAL, "Unable to get configuration "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorInitializeNetworks:
BrPrint(( BR_CRITICAL, "Unable to initialize networks "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorStartBrowser:
BrPrint(( BR_CRITICAL, "Cannot start browser "
FORMAT_API_STATUS "\n", Status));
if (Status == NERR_ServiceInstalled) {
BR_SHUTDOWN_BROWSER(NERR_WkstaInconsistentState);
} else {
BR_SHUTDOWN_BROWSER(Status);
}
break;
case BrErrorStartRpcServer:
BrPrint(( BR_CRITICAL, "Cannot start RPC server "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorCreateApiStructures:
BrPrint(( BR_CRITICAL, "Error in creating API structures "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
case BrErrorStartWorkerThreads:
BrPrint(( BR_CRITICAL, "Error in creating worker threads "
FORMAT_API_STATUS "\n", Status));
BR_SHUTDOWN_BROWSER(Status);
break;
default:
BrPrint(( BR_CRITICAL, "BrHandleError: unknown error condition %lu\n",
FailingCondition));
NetpAssert(FALSE);
BR_SHUTDOWN_BROWSER(Status);
break;
}
}
NET_API_STATUS
BrGiveInstallHints(
DWORD NewState
)
/*++
Routine Description:
This function updates the Browser service status with the Service
Controller.
Arguments:
NewState - State to tell the service contoller
Return Value:
NET_API_STATUS - NERR_Success or reason for failure.
--*/
{
NET_API_STATUS status = NERR_Success;
//
// If we're not starting,
// we don't need this install hint.
//
if ( BrGlobalData.Status.dwCurrentState != SERVICE_START_PENDING &&
NewState == SERVICE_START_PENDING ) {
return NERR_Success;
}
//
// Update our state for the service controller.
//
BrGlobalData.Status.dwCurrentState = NewState;
switch ( NewState ) {
case SERVICE_RUNNING:
BrGlobalData.Status.dwControlsAccepted =
(SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN) ;
BrGlobalData.Status.dwCheckPoint = 0;
BrGlobalData.Status.dwWaitHint = 0;
break;
case SERVICE_START_PENDING:
BrGlobalData.Status.dwCheckPoint++;
break;
case SERVICE_STOPPED:
BrGlobalData.Status.dwCurrentState = SERVICE_STOPPED;
BrGlobalData.Status.dwControlsAccepted = 0;
BrGlobalData.Status.dwCheckPoint = 0;
BrGlobalData.Status.dwWaitHint = 0;
break;
case SERVICE_STOP_PENDING:
BrGlobalData.Status.dwCurrentState = SERVICE_STOP_PENDING;
BrGlobalData.Status.dwCheckPoint = 1;
BrGlobalData.Status.dwWaitHint = BR_WAIT_HINT_TIME;
break;
}
//
// Tell the service controller our current state.
//
if (BrGlobalData.StatusHandle == (SERVICE_STATUS_HANDLE) NULL) {
BrPrint(( BR_CRITICAL,
"Cannot call SetServiceStatus, no status handle.\n"
));
return ERROR_INVALID_HANDLE;
}
if (! SetServiceStatus(BrGlobalData.StatusHandle, &BrGlobalData.Status)) {
status = GetLastError();
BrPrint(( BR_CRITICAL, "SetServiceStatus error %lu\n", status));
}
return status;
}
NET_API_STATUS
BrUpdateAnnouncementBits(
IN PDOMAIN_INFO DomainInfo OPTIONAL,
IN SERVICE_STATUS_HANDLE Handle
)
/*++
Routine Description:
This will update the service announcement bits appropriately depending on
the role of the browser server.
Arguments:
DomainInfo - Domain the announcement is to be made for
NULL implies the primary domain.
Handle - Supplies a handle for the service controller to allow it to
update its information for this service.
Return Value:
Status - Status of the update..
--*/
{
NET_API_STATUS Status = NERR_Success;
Status = BrEnumerateNetworksForDomain(DomainInfo, BrUpdateNetworkAnnouncementBits, NULL);
return Status;
}
ULONG
BrGetBrowserServiceBits(
IN PNETWORK Network
)
{
DWORD ServiceBits = 0;
if (Network->Role & ROLE_POTENTIAL_BACKUP) {
ServiceBits |= SV_TYPE_POTENTIAL_BROWSER;
}
if (Network->Role & ROLE_BACKUP) {
ServiceBits |= SV_TYPE_BACKUP_BROWSER;
}
if (Network->Role & ROLE_MASTER) {
ServiceBits |= SV_TYPE_MASTER_BROWSER;
}
if (Network->Role & ROLE_DOMAINMASTER) {
ServiceBits |= SV_TYPE_DOMAIN_MASTER;
ASSERT (ServiceBits & SV_TYPE_BACKUP_BROWSER);
}
return ServiceBits;
}
NET_API_STATUS
BrUpdateNetworkAnnouncementBits(
IN PNETWORK Network,
IN PVOID Context
)
{
NET_API_STATUS Status = NERR_Success;
ULONG ServiceBits;
if (!LOCK_NETWORK(Network)) {
return NERR_InternalError;
}
try {
ServiceBits = BrGetBrowserServiceBits(Network);
//
// Have the browser update it's information.
//
//
// Don't ever tell the browser to turn off the potential bit - this
// has the side effect of turning off the election name.
//
Status = BrUpdateBrowserStatus(Network, ServiceBits | SV_TYPE_POTENTIAL_BROWSER);
if (Status != NERR_Success) {
try_return(Status);
}
#if DBG
BrUpdateDebugInformation(L"LastServiceStatus", L"LastServiceBits", Network->NetworkName.Buffer, NULL, ServiceBits);
#endif
Status = I_NetServerSetServiceBitsEx(
NULL,
Network->DomainInfo->DomUnicodeComputerName,
Network->NetworkName.Buffer,
BROWSER_SERVICE_BITS_OF_INTEREST,
ServiceBits,
TRUE);
if ( Status != NERR_Success) {
BrPrint(( BR_CRITICAL,
"%ws: %ws: BrUpdateNetworkAnnouncementBits: Cannot I_NetServerSetServiceBitsEx %ld\n",
Network->DomainInfo->DomUnicodeDomainName,
Network->NetworkName.Buffer,
Status ));
BrLogEvent(EVENT_BROWSER_STATUS_BITS_UPDATE_FAILED, Status, 0, NULL);
try_return(Status);
}
try_exit:NOTHING;
} finally {
UNLOCK_NETWORK(Network);
}
return Status;
}
VOID
BrowserControlHandler(
IN DWORD Opcode
)
/*++
Routine Description:
This is the service control handler of the Browser service.
Arguments:
Opcode - Supplies a value which specifies the action for the Browser
service to perform.
Arg - Supplies a value which tells a service specifically what to do
for an operation specified by Opcode.
Return Value:
None.
--*/
{
BrPrint(( BR_MAIN, "In Control Handler\n"));
switch (Opcode) {
case SERVICE_CONTROL_STOP:
if (BrGlobalData.Status.dwCurrentState != SERVICE_STOP_PENDING) {
BrPrint(( BR_MAIN, "Stopping Browser...\n"));
if (! SetEvent(BrGlobalData.TerminateNowEvent)) {
//
// Problem with setting event to terminate Browser
// service.
//
BrPrint(( BR_CRITICAL, "Error setting TerminateNowEvent "
FORMAT_API_STATUS "\n", GetLastError()));
NetpAssert(FALSE);
}
}
//
// Send the status response.
//
(void) BrGiveInstallHints( SERVICE_STOP_PENDING );
return;
case SERVICE_CONTROL_INTERROGATE:
break;
case SERVICE_CONTROL_SHUTDOWN:
//
// The system is being shutdown. Stop being a browser and
// clean up.
//
if (BrGlobalData.Status.dwCurrentState != SERVICE_STOP_PENDING) {
BrEnumerateNetworks(BrShutdownBrowserForNet, (PVOID)BrGlobalData.StatusHandle);
}
break;
default:
BrPrint(( BR_CRITICAL, "Unknown Browser opcode " FORMAT_HEX_DWORD
"\n", Opcode));
}
//
// Send the status response.
//
(void) BrGiveInstallHints( SERVICE_START_PENDING );
}