windows-nt/Source/XPSP1/NT/base/fs/dfs/dfssvc/dominfo.c
2020-09-26 16:20:57 +08:00

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//+----------------------------------------------------------------------------
//
// Copyright (C) 1996, Microsoft Corporation
//
// File: dominfo.h
//
// Contents: Code to figure out domain dfs addresses
//
// Classes: None
//
// Functions: DfsInitDomainList
//
// DfspInitDomainListFromLSA
// DfspInsertLsaDomainList
//
// History: Feb 7, 1996 Milans created
//
//-----------------------------------------------------------------------------
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <ntlsa.h> // LsaEnumerateTrustedDomains
#include <dfsfsctl.h>
#include <tdi.h>
#include <gluon.h>
#include <windows.h>
#include <lm.h> // NetGetAnyDC, NetUseAdd
#include <netlogon.h> // Needed by logonp.h
#include <logonp.h> // I_NetGetDCList
#include <dfsstr.h>
#include <nodetype.h>
#include <libsup.h>
#include <dfsmrshl.h>
#include <dfsgluon.h>
#include "dominfo.h"
#include "svcwml.h"
extern DWORD
DfsCreateSpcArg(
LPWSTR DomainName,
ULONG Timeout,
ULONG Flags,
ULONG TrustDirection,
ULONG TrustType,
LONG NameCount,
PUNICODE_STRING pustrDCNames,
PDFS_CREATE_SPECIAL_INFO_ARG *ppSpcArg,
PULONG pSize);
//
// Global structure describing list of trusted domains
//
DFS_DOMAIN_INFO DfsDomainInfo;
BOOLEAN DfsDomainInfoInit = FALSE;
extern WCHAR DomainName[MAX_PATH];
extern WCHAR DomainNameDns[MAX_PATH];
extern CRITICAL_SECTION DomListCritSection;
//
// Event logging and debugging globals
//
extern ULONG DfsSvcVerbose;
extern ULONG DfsEventLog;
//
// Private functions
//
DWORD
DfspInitDomainListFromLSA();
NTSTATUS
DfspInsertLsaDomainList(
PTRUSTED_DOMAIN_INFORMATION_EX rglsaDomainList,
ULONG cDomains);
NTSTATUS
DfspInsertDsDomainList(
PDS_DOMAIN_TRUSTS pDsDomainTrusts,
ULONG cDomains);
BOOLEAN
IsDupDomainInfo(
PDS_DOMAIN_TRUSTS pDsDomainTrusts);
//+----------------------------------------------------------------------------
//
// Function: DfsInitDomainList
//
// Synopsis: Initializes the list of trusted domains so that their Dfs's
// may be accessed.
//
// Arguments: None
//
// Returns: Nothing.
//
//-----------------------------------------------------------------------------
VOID
DfsInitDomainList()
{
PDS_DOMAIN_TRUSTS pDsDomainTrusts = NULL;
ULONG DsDomainCount = 0;
DWORD dwErr;
DFS_DOMAIN_INFO OldDfsDomainInfo;
ULONG i, j;
HANDLE dfsHandle;
NTSTATUS status;
PDFS_CREATE_SPECIAL_INFO_ARG pSpcArg;
ULONG Size;
IO_STATUS_BLOCK ioStatus;
EnterCriticalSection(&DomListCritSection);
if (DfsDomainInfoInit == FALSE) {
ZeroMemory( &DfsDomainInfo, sizeof(DfsDomainInfo) );
ZeroMemory( &OldDfsDomainInfo, sizeof(DfsDomainInfo) );
} else {
OldDfsDomainInfo = DfsDomainInfo;
ZeroMemory( &DfsDomainInfo, sizeof(DfsDomainInfo) );
}
//
// Handle our domain name
//
RtlInitUnicodeString(&DfsDomainInfo.ustrThisDomainFlat, DomainName);
RtlInitUnicodeString(&DfsDomainInfo.ustrThisDomain, DomainNameDns);
//
// And the trusted domains
//
DfspInitDomainListFromLSA();
//
// Use Ds for another list
//
dwErr = DsEnumerateDomainTrusts(
NULL,
DS_DOMAIN_VALID_FLAGS,
&pDsDomainTrusts,
&DsDomainCount);
if (dwErr == ERROR_SUCCESS) {
//
// Merge that list in
//
DfspInsertDsDomainList(
pDsDomainTrusts,
DsDomainCount);
NetApiBufferFree(pDsDomainTrusts);
}
#if DBG
if (DfsSvcVerbose) {
ULONG i;
for (i = 0; i < DfsDomainInfo.cDomains; i++) {
DbgPrint("%d:[%wZ:%wZ]\n",
i,
&DfsDomainInfo.rgustrDomains[i].FlatName,
&DfsDomainInfo.rgustrDomains[i].DnsName);
}
}
#endif
if (dwErr == ERROR_SUCCESS) {
for (i = 0; i < OldDfsDomainInfo.cDomains; i++) {
for (j = 0; j < DfsDomainInfo.cDomains; j++) {
if ((RtlCompareUnicodeString(
&OldDfsDomainInfo.rgustrDomains[i].FlatName,
&DfsDomainInfo.rgustrDomains[j].FlatName,
TRUE) == 0) ||
(RtlCompareUnicodeString(
&OldDfsDomainInfo.rgustrDomains[i].DnsName,
&DfsDomainInfo.rgustrDomains[j].DnsName,
TRUE) == 0)) {
break;
}
}
if (j == DfsDomainInfo.cDomains) {
status = DfsOpen(&dfsHandle, NULL);
if (NT_SUCCESS(status)) {
status = DfsCreateSpcArg(
OldDfsDomainInfo.rgustrDomains[i].FlatName.Buffer,
0,
DFS_SPECIAL_INFO_NETBIOS,
TRUST_DIRECTION_BIDIRECTIONAL,
TRUST_TYPE_UPLEVEL,
0,
NULL,
&pSpcArg,
&Size);
if (status == ERROR_SUCCESS) {
status = NtFsControlFile(
dfsHandle,
NULL, // Event,
NULL, // ApcRoutine,
NULL, // ApcContext,
&ioStatus,
FSCTL_DFS_DELETE_SPECIAL_INFO,
pSpcArg,
Size,
NULL,
0);
free(pSpcArg);
}
status = DfsCreateSpcArg(
OldDfsDomainInfo.rgustrDomains[i].DnsName.Buffer,
0,
0,
TRUST_DIRECTION_BIDIRECTIONAL,
TRUST_TYPE_UPLEVEL,
0,
NULL,
&pSpcArg,
&Size);
if (status == ERROR_SUCCESS) {
status = NtFsControlFile(
dfsHandle,
NULL, // Event,
NULL, // ApcRoutine,
NULL, // ApcContext,
&ioStatus,
FSCTL_DFS_DELETE_SPECIAL_INFO,
pSpcArg,
Size,
NULL,
0);
free(pSpcArg);
}
NtClose(dfsHandle);
}
}
}
if (OldDfsDomainInfo.rgustrDomains)
free(OldDfsDomainInfo.rgustrDomains);
if (OldDfsDomainInfo.wszNameBuffer)
free(OldDfsDomainInfo.wszNameBuffer);
}
DfsDomainInfoInit = TRUE;
LeaveCriticalSection(&DomListCritSection);
}
//+----------------------------------------------------------------------------
//
// Function: DfspInitDomainListFromLSA
//
// Synopsis: Retrieves the list of trusted domains from the LSA.
//
// Arguments: None
//
// Returns: [ERROR_SUCCESS] -- Successfully inited list.
//
// [ERROR_NOT_ENOUGH_MEMORY] -- Out of memory condition
//
//-----------------------------------------------------------------------------
DWORD
DfspInitDomainListFromLSA()
{
DWORD dwErr;
NTSTATUS status;
ULONG cEnum;
OBJECT_ATTRIBUTES oa;
LSA_HANDLE hlsa = NULL;
LSA_ENUMERATION_HANDLE hEnum = (LSA_ENUMERATION_HANDLE)0;
PTRUSTED_DOMAIN_INFORMATION_EX rglsaDomainInfo = NULL;
ZeroMemory( &oa, sizeof(OBJECT_ATTRIBUTES) );
status = LsaOpenPolicy(
NULL, // SystemName
&oa, // LSA Object Attributes
POLICY_VIEW_LOCAL_INFORMATION, // Desired Access
&hlsa);
if (NT_SUCCESS(status)) {
do {
cEnum = 0;
status = LsaEnumerateTrustedDomainsEx(
hlsa,
&hEnum,
(PVOID) &rglsaDomainInfo,
LSA_MAXIMUM_ENUMERATION_LENGTH,
&cEnum);
if (
NT_SUCCESS(status)
||
(status == STATUS_NO_MORE_ENTRIES && cEnum > 0 && rglsaDomainInfo != NULL)
) {
status = DfspInsertLsaDomainList(
rglsaDomainInfo,
cEnum);
}
if (rglsaDomainInfo != NULL) {
LsaFreeMemory(rglsaDomainInfo);
rglsaDomainInfo = NULL;
}
} while (status == STATUS_SUCCESS);
}
switch (status) {
case STATUS_SUCCESS:
case STATUS_NO_MORE_ENTRIES:
dwErr = ERROR_SUCCESS;
break;
case STATUS_INSUFFICIENT_RESOURCES:
dwErr = ERROR_NOT_ENOUGH_MEMORY;
break;
default:
dwErr = ERROR_UNEXP_NET_ERR;
break;
}
if (hlsa != NULL) {
LsaClose(hlsa);
}
return( dwErr );
}
//+----------------------------------------------------------------------------
//
// Function: DfspInsertLsaDomainList
//
// Synopsis: Helper function to insert a part of the trusted domain list
// into the DfsDomainInfo.
//
// Arguments: [rglsaDomainList] -- Array of LSA_TRUST_INFORMATIONs.
// [cDomains] -- Number of elements in rglsaDomainList
//
// Returns: [STATUS_SUCCESS] -- Successfully appended domain list to
// DfsDomainInfo.
//
// [STATUS_INSUFFICIENT_RESOURCES] -- Unable to allocate memory
// for new list.
//
//-----------------------------------------------------------------------------
NTSTATUS
DfspInsertLsaDomainList(
PTRUSTED_DOMAIN_INFORMATION_EX rglsaDomainList,
ULONG cDomains)
{
PDFS_TRUSTED_DOMAIN_INFO rgustrDomains = NULL;
PWSTR wszNameBuffer = NULL, pwch;
ULONG cTotalDomains, cbNameBuffer, i, j;
DFSSVC_TRACE_NORM(DEFAULT, DfspInsertLsaDomainList_Entry,
LOGPTR(rglsaDomainList)
LOGULONG(cDomains));
#if DBG
if (DfsSvcVerbose)
DbgPrint("DfspInsertLsaDomainList(%d)\n", cDomains);
#endif
cTotalDomains = DfsDomainInfo.cDomains + cDomains;
cbNameBuffer = DfsDomainInfo.cbNameBuffer;
for (i = 0; i < cDomains; i++) {
cbNameBuffer += rglsaDomainList[i].Name.Length
+ sizeof(UNICODE_NULL) +
rglsaDomainList[i].FlatName.Length +
sizeof(UNICODE_NULL);
}
wszNameBuffer = (PWSTR) malloc( cbNameBuffer );
if (wszNameBuffer == NULL) {
return( STATUS_INSUFFICIENT_RESOURCES );
}
rgustrDomains = (PDFS_TRUSTED_DOMAIN_INFO) malloc(
cTotalDomains * sizeof(DFS_TRUSTED_DOMAIN_INFO));
if (rgustrDomains == NULL) {
free( wszNameBuffer );
return( STATUS_INSUFFICIENT_RESOURCES );
}
//
// Copy over the existing DfsDomainInfo
//
if (DfsDomainInfo.cDomains != 0) {
CopyMemory(
wszNameBuffer,
DfsDomainInfo.wszNameBuffer,
DfsDomainInfo.cbNameBuffer);
CopyMemory(
rgustrDomains,
DfsDomainInfo.rgustrDomains,
DfsDomainInfo.cDomains * sizeof(DFS_TRUSTED_DOMAIN_INFO));
}
for (i = 0; i < DfsDomainInfo.cDomains; i++) {
rgustrDomains[i].FlatName.Buffer = (WCHAR *)((PCHAR)wszNameBuffer +
((PCHAR)DfsDomainInfo.rgustrDomains[i].FlatName.Buffer - (PCHAR)DfsDomainInfo.wszNameBuffer));
rgustrDomains[i].DnsName.Buffer = (WCHAR *)((PCHAR)wszNameBuffer +
((PCHAR)DfsDomainInfo.rgustrDomains[i].DnsName.Buffer - (PCHAR)DfsDomainInfo.wszNameBuffer));
}
//
// Now copy in the new
//
pwch = (PWSTR) (((PCHAR) wszNameBuffer) + DfsDomainInfo.cbNameBuffer);
for (j = 0, i = DfsDomainInfo.cDomains; j < cDomains; j++, i++) {
//
// Dns name
//
CopyMemory(
pwch,
rglsaDomainList[j].Name.Buffer,
rglsaDomainList[j].Name.Length);
pwch[ rglsaDomainList[j].Name.Length / sizeof(WCHAR) ] = UNICODE_NULL;
RtlInitUnicodeString( &rgustrDomains[i].DnsName, pwch);
pwch += (rglsaDomainList[j].Name.Length / sizeof(WCHAR) + 1);
//
// FlatName (Netbios)
//
CopyMemory(
pwch,
rglsaDomainList[j].FlatName.Buffer,
rglsaDomainList[j].FlatName.Length);
pwch[ rglsaDomainList[j].FlatName.Length / sizeof(WCHAR) ] = UNICODE_NULL;
RtlInitUnicodeString( &rgustrDomains[i].FlatName, pwch);
pwch += (rglsaDomainList[j].FlatName.Length / sizeof(WCHAR) + 1);
rgustrDomains[i].TrustDirection = rglsaDomainList[j].TrustDirection;
rgustrDomains[i].TrustType = rglsaDomainList[j].TrustType;
rgustrDomains[i].TrustAttributes = rglsaDomainList[j].TrustAttributes;
}
if (DfsDomainInfo.wszNameBuffer != NULL)
free(DfsDomainInfo.wszNameBuffer);
if (DfsDomainInfo.rgustrDomains != NULL)
free( DfsDomainInfo.rgustrDomains );
DfsDomainInfo.cDomains = cTotalDomains;
DfsDomainInfo.rgustrDomains = rgustrDomains;
DfsDomainInfo.wszNameBuffer = wszNameBuffer;
DfsDomainInfo.cbNameBuffer = cbNameBuffer;
#if DBG
if (DfsSvcVerbose)
DbgPrint("DfspInsertLsaDomainList exit\n");
#endif
return( STATUS_SUCCESS );
}
//+----------------------------------------------------------------------------
//
// Function: DfspInsertDsDomainList
//
// Synopsis: Helper function to insert a part of the trusted domain list
// into the DfsDomainInfo.
//
// Arguments: [pDsDomainTrusts] -- Array of DS_DOMAIN_TRUSTS
// [cDomains] -- Number of elements in pDsDomainTrusts
//
// Returns: [STATUS_SUCCESS] -- Successfully appended domain list to
// DfsDomainInfo.
//
// [STATUS_INSUFFICIENT_RESOURCES] -- Unable to allocate memory
// for new list.
//
//-----------------------------------------------------------------------------
NTSTATUS
DfspInsertDsDomainList(
PDS_DOMAIN_TRUSTS pDsDomainTrusts,
ULONG cDomains)
{
PDFS_TRUSTED_DOMAIN_INFO rgustrDomains = NULL;
PWSTR wszNameBuffer = NULL, pwch;
ULONG cTotalDomains, cbNameBuffer, i, j;
ULONG Len;
ULONG Count;
DFSSVC_TRACE_NORM(DEFAULT, DfspInsertDsDomainList_Entry,
LOGPTR(pDsDomainTrusts)
LOGULONG(cDomains));
#if DBG
if (DfsSvcVerbose)
DbgPrint("DfspInsertDsDomainList(%d)\n", cDomains);
#endif
cTotalDomains = DfsDomainInfo.cDomains + cDomains;
cbNameBuffer = DfsDomainInfo.cbNameBuffer;
for (i = 0; i < cDomains; i++) {
if (pDsDomainTrusts[i].NetbiosDomainName != NULL
&&
pDsDomainTrusts[i].DnsDomainName != NULL
) {
cbNameBuffer += wcslen(pDsDomainTrusts[i].NetbiosDomainName) * sizeof(WCHAR) +
sizeof(UNICODE_NULL) +
wcslen(pDsDomainTrusts[i].DnsDomainName) * sizeof(WCHAR) +
sizeof(UNICODE_NULL);
}
}
wszNameBuffer = (PWSTR) malloc( cbNameBuffer );
if (wszNameBuffer == NULL) {
return( STATUS_INSUFFICIENT_RESOURCES );
}
rgustrDomains = (PDFS_TRUSTED_DOMAIN_INFO) malloc(
cTotalDomains * sizeof(DFS_TRUSTED_DOMAIN_INFO));
if (rgustrDomains == NULL) {
free( wszNameBuffer );
return( STATUS_INSUFFICIENT_RESOURCES );
}
//
// Copy over the existing DfsDomainInfo
//
if (DfsDomainInfo.cDomains != 0) {
CopyMemory(
wszNameBuffer,
DfsDomainInfo.wszNameBuffer,
DfsDomainInfo.cbNameBuffer);
CopyMemory(
rgustrDomains,
DfsDomainInfo.rgustrDomains,
DfsDomainInfo.cDomains * sizeof(DFS_TRUSTED_DOMAIN_INFO));
}
for (i = 0; i < DfsDomainInfo.cDomains; i++) {
rgustrDomains[i].FlatName.Buffer = (WCHAR *)((PCHAR)wszNameBuffer +
((PCHAR)DfsDomainInfo.rgustrDomains[i].FlatName.Buffer - (PCHAR)DfsDomainInfo.wszNameBuffer));
rgustrDomains[i].DnsName.Buffer = (WCHAR *)((PCHAR)wszNameBuffer +
((PCHAR)DfsDomainInfo.rgustrDomains[i].DnsName.Buffer - (PCHAR)DfsDomainInfo.wszNameBuffer));
}
//
// Now copy in the new
//
pwch = (PWSTR) (((PCHAR) wszNameBuffer) + DfsDomainInfo.cbNameBuffer);
for (Count = j = 0, i = DfsDomainInfo.cDomains; j < cDomains; j++) {
if (IsDupDomainInfo(&pDsDomainTrusts[j]) == TRUE) {
continue;
}
//
// Dns name
//
Len = wcslen(pDsDomainTrusts[j].DnsDomainName) * sizeof(WCHAR);
CopyMemory(
pwch,
pDsDomainTrusts[j].DnsDomainName,
Len);
pwch[ Len / sizeof(WCHAR) ] = UNICODE_NULL;
RtlInitUnicodeString( &rgustrDomains[i].DnsName, pwch);
pwch += (Len / sizeof(WCHAR) + 1);
//
// FlatName (Netbios)
//
Len = wcslen(pDsDomainTrusts[j].NetbiosDomainName) * sizeof(WCHAR);
CopyMemory(
pwch,
pDsDomainTrusts[j].NetbiosDomainName,
Len);
pwch[ Len / sizeof(WCHAR) ] = UNICODE_NULL;
RtlInitUnicodeString( &rgustrDomains[i].FlatName, pwch);
pwch += (Len / sizeof(WCHAR) + 1);
rgustrDomains[i].TrustDirection = pDsDomainTrusts[j].Flags;
rgustrDomains[i].TrustType = pDsDomainTrusts[j].TrustType;
rgustrDomains[i].TrustAttributes = pDsDomainTrusts[j].TrustAttributes;
Count++;
i++;
}
if (DfsDomainInfo.wszNameBuffer != NULL)
free(DfsDomainInfo.wszNameBuffer);
if (DfsDomainInfo.rgustrDomains != NULL)
free( DfsDomainInfo.rgustrDomains );
DfsDomainInfo.cDomains += Count;
DfsDomainInfo.rgustrDomains = rgustrDomains;
DfsDomainInfo.wszNameBuffer = wszNameBuffer;
DfsDomainInfo.cbNameBuffer = cbNameBuffer;
#if DBG
if (DfsSvcVerbose)
DbgPrint("DfspInsertDsDomainList (%d inserted)\n", Count);
#endif
return( STATUS_SUCCESS );
}
BOOLEAN
IsDupDomainInfo(
PDS_DOMAIN_TRUSTS pDsDomainTrusts)
{
ULONG i;
if ( pDsDomainTrusts->NetbiosDomainName == NULL ||
pDsDomainTrusts->DnsDomainName == NULL
) {
return TRUE;
}
if (_wcsicmp(pDsDomainTrusts->NetbiosDomainName, DomainName) == 0
||
_wcsicmp(pDsDomainTrusts->DnsDomainName, DomainNameDns) == 0
){
return TRUE;
}
for (i = 0; i < DfsDomainInfo.cDomains; i++) {
if (_wcsicmp(pDsDomainTrusts->NetbiosDomainName,
DfsDomainInfo.rgustrDomains[i].FlatName.Buffer) == 0
||
_wcsicmp(pDsDomainTrusts->DnsDomainName,
DfsDomainInfo.rgustrDomains[i].DnsName.Buffer) == 0
) {
return TRUE;
}
}
return FALSE;
}