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windows-nt/Source/XPSP1/NT/ds/netapi/svcdlls/browser/server/brwan.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
brwan.c
Abstract:
This module contains WAN support routines used by the
Browser service.
Author:
Larry Osterman (LarryO) 22-Nov-1992
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
//-------------------------------------------------------------------//
// //
// Local function prototypes //
// //
//-------------------------------------------------------------------//
NET_API_STATUS
BrAddDomainEntry(
IN PINTERIM_SERVER_LIST InterimServerList,
IN LPTSTR ConfigEntry
);
//-------------------------------------------------------------------//
// //
// Global variables //
// //
//-------------------------------------------------------------------//
//-------------------------------------------------------------------//
// //
// Global routines //
// //
//-------------------------------------------------------------------//
NET_API_STATUS NET_API_FUNCTION
I_BrowserrQueryOtherDomains(
IN BROWSER_IDENTIFY_HANDLE ServerName,
IN OUT LPSERVER_ENUM_STRUCT InfoStruct,
OUT LPDWORD TotalEntries
)
/*++
Routine Description:
This routine returns the list of "other domains" configured for this
machine. It is only valid on primary domain controllers. If it is called
on a machine that is not a PDC, it will return NERR_NotPrimary.
Arguments:
IN BROWSER_IDENTIFY_HANDLE ServerName - Ignored.
IN LPSERVER_ENUM_STRUCT InfoStruct - Returns the list of other domains
as a SERVER_INFO_100 structure.
OUT LPDWORD TotalEntries - Returns the total number of other domains.
Return Value:
NET_API_STATUS - The status of this request.
--*/
{
NET_API_STATUS Status;
PSERVER_INFO_100 ServerInfo;
ULONG NumberOfOtherDomains;
if ( InfoStruct == NULL ) {
return ERROR_INVALID_PARAMETER;
}
if (InfoStruct->Level != 100) {
return(ERROR_INVALID_LEVEL);
}
if ( InfoStruct->ServerInfo.Level100 == NULL ) {
return ERROR_INVALID_PARAMETER;
}
//
// Use the worker routine to do the actual work.
//
Status = BrQueryOtherDomains( &ServerInfo, &NumberOfOtherDomains );
if ( Status == NERR_Success ) {
*TotalEntries = NumberOfOtherDomains;
InfoStruct->ServerInfo.Level100->Buffer = ServerInfo;
InfoStruct->ServerInfo.Level100->EntriesRead = NumberOfOtherDomains;
}
return Status;
}
NET_API_STATUS
BrWanMasterInitialize(
IN PNETWORK Network
)
/*++
Routine Description:
This routine initializes the wan information for a new master.
--*/
{
LPBYTE Buffer = NULL;
PSERVER_INFO_100 ServerInfo;
NET_API_STATUS Status;
ULONG i;
ULONG EntriesRead;
ULONG TotalEntries;
PDOMAIN_CONTROLLER_INFO pDcInfo=NULL;
//
// If we're on the PDC, then all our initialization has been done.
// Or, if we're semi-pseudo server, we don't contact the PDC/BDC
//
#ifdef ENABLE_PSEUDO_BROWSER
if ( (Network->Flags & NETWORK_PDC) ||
BrInfo.PseudoServerLevel == BROWSER_SEMI_PSEUDO_NO_DMB ) {
#else
if ( Network->Flags & NETWORK_PDC ) {
#endif
return NERR_Success;
}
Status = DsGetDcName( NULL, NULL, NULL, NULL,
DS_PDC_REQUIRED |
DS_BACKGROUND_ONLY |
DS_RETURN_FLAT_NAME,
&pDcInfo );
//
// It is not an error to not be able to contact the PDC.
//
if (Status != NERR_Success) {
return NERR_Success;
}
ASSERT ( pDcInfo &&
pDcInfo->DomainControllerName );
Status = I_BrowserQueryOtherDomains(pDcInfo->DomainControllerName,
&Buffer,
&EntriesRead,
&TotalEntries);
//
// We don't need the PDC name any more.
//
NetApiBufferFree((LPVOID)pDcInfo);
pDcInfo = NULL;
if (Status != NERR_Success) {
//
// We failed to get the list from supposedly the PDC.
// It could be that the role has changed & DsGetDcName's cache
// hasn't got refreshed.
//
// Force PDC discovery so that next time around we're sure
// to get the real PDC.
//
Status = DsGetDcName( NULL, NULL, NULL, NULL,
DS_PDC_REQUIRED |
DS_FORCE_REDISCOVERY | // Note FORCE option
DS_RETURN_FLAT_NAME,
&pDcInfo );
if (Status != NERR_Success) {
return NERR_Success;
}
ASSERT ( pDcInfo &&
pDcInfo->DomainControllerName );
Status = I_BrowserQueryOtherDomains(pDcInfo->DomainControllerName,
&Buffer,
&EntriesRead,
&TotalEntries);
//
// We don't need the PDC name any more.
//
NetApiBufferFree((LPVOID)pDcInfo);
if (Status != NERR_Success) {
return NERR_Success;
}
}
if (!LOCK_NETWORK(Network)) {
return NERR_InternalError;
}
try {
PLIST_ENTRY Entry;
PLIST_ENTRY NextEntry;
//
// Scan the other domains list and turn on the active bit for each
// other domain.
//
for (Entry = Network->OtherDomainsList.Flink;
Entry != &Network->OtherDomainsList ;
Entry = Entry->Flink) {
PNET_OTHER_DOMAIN OtherDomain = CONTAINING_RECORD(Entry, NET_OTHER_DOMAIN, Next);
OtherDomain->Flags |= OTHERDOMAIN_INVALID;
}
ServerInfo = (PSERVER_INFO_100)Buffer;
for (i = 0; i < EntriesRead; i++ ) {
//
// Add this as an other domain.
//
for (Entry = Network->OtherDomainsList.Flink;
Entry != &Network->OtherDomainsList ;
Entry = Entry->Flink) {
PNET_OTHER_DOMAIN OtherDomain = CONTAINING_RECORD(Entry, NET_OTHER_DOMAIN, Next);
//
// If this name is in the other domains list, it's not invalid
// and we should flag that we've seen the domain name.
//
// The list we're getting is over the net. Make sure serverinfo
// contains a valid name for comparison (see bug 377078)
// Skip processing if NULL.
// If ServerInfo got NULLED out in prev run, we shouldn't
// get into _wcsicmp.
if (ServerInfo->sv100_name &&
!_wcsicmp(OtherDomain->Name, ServerInfo->sv100_name)) {
OtherDomain->Flags &= ~OTHERDOMAIN_INVALID;
ServerInfo->sv100_name = NULL;
}
}
ServerInfo ++;
}
//
// Scan the other domains list and remove any domains that are
// still marked as invalid.
//
for (Entry = Network->OtherDomainsList.Flink;
Entry != &Network->OtherDomainsList ;
Entry = NextEntry) {
PNET_OTHER_DOMAIN OtherDomain = CONTAINING_RECORD(Entry, NET_OTHER_DOMAIN, Next);
if (OtherDomain->Flags & OTHERDOMAIN_INVALID) {
NextEntry = Entry->Flink;
//
// Remove this entry from the list.
//
RemoveEntryList(Entry);
BrRemoveOtherDomain(Network, OtherDomain->Name);
MIDL_user_free(OtherDomain);
} else {
NextEntry = Entry->Flink;
}
}
//
// Now scan the domain list from the PDC and add any entries that
// weren't there already.
//
ServerInfo = (PSERVER_INFO_100)Buffer;
for (i = 0; i < EntriesRead; i++ ) {
if (ServerInfo->sv100_name != NULL) {
PNET_OTHER_DOMAIN OtherDomain = MIDL_user_allocate(sizeof(NET_OTHER_DOMAIN));
if (OtherDomain != NULL) {
Status = BrAddOtherDomain(Network, ServerInfo->sv100_name);
//
// If we were able to add the other domain, add it to our
// internal structure.
//
if (Status == NERR_Success) {
wcscpy(OtherDomain->Name, ServerInfo->sv100_name);
OtherDomain->Flags = 0;
InsertHeadList(&Network->OtherDomainsList, &OtherDomain->Next);
} else {
LPWSTR SubString[1];
SubString[0] = ServerInfo->sv100_name;
BrLogEvent(EVENT_BROWSER_OTHERDOMAIN_ADD_FAILED, Status, 1, SubString);
}
}
}
ServerInfo ++;
}
} finally {
UNLOCK_NETWORK(Network);
if (Buffer != NULL) {
MIDL_user_free(Buffer);
}
}
return NERR_Success;
}
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