Leaked source code of windows server 2003
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/*++
Copyright (c) 1995 Microsoft Corporation
Module Name:
Mapping.c
Abstract:
Author:
Arthur Hanson (arth) Dec 07, 1994
Environment:
Revision History:
--*/
#include <stdlib.h>
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <dsgetdc.h>
#include "debug.h"
#include "llsutil.h"
#include "llssrv.h"
#include "mapping.h"
#include "msvctbl.h"
#include "svctbl.h"
#include "perseat.h"
#define NO_LLS_APIS
#include "llsapi.h"
#include <strsafe.h> //include last
ULONG MappingListSize = 0;
PMAPPING_RECORD *MappingList = NULL;
RTL_RESOURCE MappingListLock;
/////////////////////////////////////////////////////////////////////////
NTSTATUS
MappingListInit()
/*++
Routine Description:
The table is linear so a binary search can be used on the table. We
assume that adding new Mappings is a relatively rare occurance, since
we need to sort it each time.
The Mapping table is guarded by a read and write semaphore. Multiple
reads can occur, but a write blocks everything.
Arguments:
None.
Return Value:
None.
--*/
{
NTSTATUS status = STATUS_SUCCESS;
try
{
RtlInitializeResource(&MappingListLock);
} except(EXCEPTION_EXECUTE_HANDLER ) {
status = GetExceptionCode();
}
return status;
} // MappingListInit
/////////////////////////////////////////////////////////////////////////
int __cdecl MappingListCompare(const void *arg1, const void *arg2) {
PMAPPING_RECORD Svc1, Svc2;
Svc1 = (PMAPPING_RECORD) *((PMAPPING_RECORD *) arg1);
Svc2 = (PMAPPING_RECORD) *((PMAPPING_RECORD *) arg2);
return lstrcmpi( Svc1->Name, Svc2->Name);
} // MappingListCompare
/////////////////////////////////////////////////////////////////////////
int __cdecl MappingUserListCompare(const void *arg1, const void *arg2) {
LPTSTR User1, User2;
User1 = (LPTSTR) *((LPTSTR *) arg1);
User2 = (LPTSTR) *((LPTSTR *) arg2);
return lstrcmpi( User1, User2);
} // MappingUserListCompare
/////////////////////////////////////////////////////////////////////////
PMAPPING_RECORD
MappingListFind(
LPTSTR MappingName
)
/*++
Routine Description:
Internal routine to actually do binary search on MappingList, this
does not do any locking as we expect the wrapper routine to do this.
The search is a simple binary search.
Arguments:
MappingName -
Return Value:
Pointer to found Mapping table entry or NULL if not found.
--*/
{
LONG begin = 0;
LONG end = (LONG) MappingListSize - 1;
LONG cur;
int match;
PMAPPING_RECORD Mapping;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingListFind\n"));
#endif
if ((MappingName == NULL) || (MappingListSize == 0))
return NULL;
while (end >= begin) {
// go halfway in-between
cur = (begin + end) / 2;
Mapping = MappingList[cur];
// compare the two result into match
match = lstrcmpi(MappingName, Mapping->Name);
if (match < 0)
// move new begin
end = cur - 1;
else
begin = cur + 1;
if (match == 0)
return Mapping;
}
return NULL;
} // MappingListFind
/////////////////////////////////////////////////////////////////////////
LPTSTR
MappingUserListFind(
LPTSTR User,
ULONG NumEntries,
LPTSTR *Users
)
/*++
Routine Description:
Internal routine to actually do binary search on MasterServiceList, this
does not do any locking as we expect the wrapper routine to do this.
The search is a simple binary search.
Arguments:
ServiceName -
Return Value:
Pointer to found service table entry or NULL if not found.
--*/
{
LONG begin = 0;
LONG end;
LONG cur;
int match;
LPTSTR pUser;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingUserListFind\n"));
#endif
if (NumEntries == 0)
return NULL;
end = (LONG) NumEntries - 1;
while (end >= begin) {
// go halfway in-between
cur = (begin + end) / 2;
pUser = Users[cur];
// compare the two result into match
match = lstrcmpi(User, pUser);
if (match < 0)
// move new begin
end = cur - 1;
else
begin = cur + 1;
if (match == 0)
return pUser;
}
return NULL;
} // MappingUserListFind
/////////////////////////////////////////////////////////////////////////
PMAPPING_RECORD
MappingListUserFind( LPTSTR User )
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
ULONG i = 0;
PMAPPING_RECORD pMap = NULL;
//
// Need to scan list so get read access.
//
RtlAcquireResourceShared(&MappingListLock, TRUE);
if (MappingList == NULL)
goto MappingListUserFindExit;
while ((i < MappingListSize) && (pMap == NULL)) {
if (MappingUserListFind(User, MappingList[i]->NumMembers, MappingList[i]->Members ) != NULL)
pMap = MappingList[i];
i++;
}
MappingListUserFindExit:
RtlReleaseResource(&MappingListLock);
return pMap;
} // MappingListUserFind
/////////////////////////////////////////////////////////////////////////
PMAPPING_RECORD
MappingListAdd(
LPTSTR MappingName,
LPTSTR Comment,
ULONG Licenses,
NTSTATUS *pStatus
)
/*++
Routine Description:
Adds a Mapping to the Mapping table.
Arguments:
MappingName -
Return Value:
Pointer to added Mapping table entry, or NULL if failed.
--*/
{
PMAPPING_RECORD NewMapping;
LPTSTR NewMappingName;
LPTSTR NewComment;
PMAPPING_RECORD CurrentRecord = NULL;
PMAPPING_RECORD *pMappingListTmp;
HRESULT hr;
size_t cch;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingListAdd\n"));
#endif
//
// We do a double check here to see if the mapping already exists
//
CurrentRecord = MappingListFind(MappingName);
if (CurrentRecord != NULL) {
if (NULL != pStatus)
*pStatus = STATUS_GROUP_EXISTS;
return NULL;
}
//
// Allocate space for table (zero init it).
//
if (MappingList == NULL)
pMappingListTmp = (PMAPPING_RECORD *) LocalAlloc(LPTR, sizeof(PMAPPING_RECORD));
else
pMappingListTmp = (PMAPPING_RECORD *) LocalReAlloc(MappingList, sizeof(PMAPPING_RECORD) * (MappingListSize + 1), LHND);
//
// Make sure we could allocate Mapping table
//
if (pMappingListTmp == NULL) {
return NULL;
} else {
MappingList = pMappingListTmp;
}
NewMapping = LocalAlloc(LPTR, sizeof(MAPPING_RECORD));
if (NewMapping == NULL)
return NULL;
MappingList[MappingListSize] = NewMapping;
cch = lstrlen(MappingName) + 1;
NewMappingName = (LPTSTR) LocalAlloc(LPTR, cch * sizeof(TCHAR));
if (NewMappingName == NULL) {
LocalFree(NewMapping);
return NULL;
}
// now copy it over...
NewMapping->Name = NewMappingName;
hr = StringCchCopy(NewMappingName, cch, MappingName);
ASSERT(SUCCEEDED(hr));
//
// Allocate space for Comment
//
cch = lstrlen(Comment) + 1;
NewComment = (LPTSTR) LocalAlloc(LPTR, cch * sizeof(TCHAR));
if (NewComment == NULL) {
LocalFree(NewMapping);
LocalFree(NewMappingName);
return NULL;
}
// now copy it over...
NewMapping->Comment = NewComment;
hr = StringCchCopy(NewComment, cch, Comment);
ASSERT(SUCCEEDED(hr));
NewMapping->NumMembers = 0;
NewMapping->Members = NULL;
NewMapping->Licenses = Licenses;
NewMapping->LicenseListSize = 0;
NewMapping->LicenseList = NULL;
NewMapping->Flags = (LLS_FLAG_LICENSED | LLS_FLAG_SUITE_AUTO);
MappingListSize++;
// Have added the entry - now need to sort it in order of the Mapping names
qsort((void *) MappingList, (size_t) MappingListSize, sizeof(PMAPPING_RECORD), MappingListCompare);
return NewMapping;
} // MappingListAdd
/////////////////////////////////////////////////////////////////////////
NTSTATUS
MappingListDelete(
LPTSTR MappingName
)
/*++
Routine Description:
Arguments:
MappingName -
Return Value:
--*/
{
PMAPPING_RECORD Mapping;
ULONG i;
PMAPPING_RECORD *pMappingListTmp;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingListDelete\n"));
#endif
//
// Get mapping record based on name given
//
Mapping = MappingListFind(MappingName);
if (Mapping == NULL)
return STATUS_OBJECT_NAME_NOT_FOUND;
//
// Make sure there are no members to the mapping
//
if (Mapping->NumMembers != 0)
return STATUS_MEMBER_IN_GROUP;
//
// Check if this is the last Mapping
//
if (MappingListSize == 1) {
LocalFree(Mapping->Name);
LocalFree(Mapping->Comment);
LocalFree(Mapping);
LocalFree(MappingList);
MappingListSize = 0;
MappingList = NULL;
return STATUS_SUCCESS;
}
//
// Not the last mapping so find it in the list
//
i = 0;
while ((i < MappingListSize) && (lstrcmpi(MappingList[i]->Name, MappingName)))
i++;
//
// Now move everything below it up.
//
i++;
while (i < MappingListSize) {
//swi, code review, why not MappingList[i-1] = MappingList[i];?
memcpy(&MappingList[i-1], &MappingList[i], sizeof(PMAPPING_RECORD));
i++;
}
pMappingListTmp = (PMAPPING_RECORD *) LocalReAlloc(MappingList, sizeof(PMAPPING_RECORD) * (MappingListSize - 1), LHND);
//
// Make sure we could allocate Mapping table
//
if (pMappingListTmp != NULL)
MappingList = pMappingListTmp;
//
// if realloc failed, use old table; still decrement size, though
//
MappingListSize--;
//
// Now free up the record
//
LocalFree(Mapping->Name);
LocalFree(Mapping->Comment);
LocalFree(Mapping);
return STATUS_SUCCESS;
} // MappingListDelete
/////////////////////////////////////////////////////////////////////////
PMAPPING_RECORD
MappingUserListAdd(
LPTSTR MappingName,
LPTSTR User
)
/*++
Routine Description:
Arguments:
MappingName -
Return Value:
Pointer to added Mapping table entry, or NULL if failed.
--*/
{
PMAPPING_RECORD Mapping;
LPTSTR NewName;
LPTSTR pUser;
LPTSTR *pMembersTmp;
HRESULT hr;
size_t cch;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingUserListAdd\n"));
#endif
//
// Get mapping record based on name given
//
Mapping = MappingListFind(MappingName);
if (Mapping == NULL)
return NULL;
//
// We do a double check here to see if another thread just got done
// adding the Mapping, between when we checked last and actually got
// the write lock.
//
pUser = MappingUserListFind(User, Mapping->NumMembers, Mapping->Members);
if (pUser != NULL) {
return Mapping;
}
//
// Allocate space for table (zero init it).
//
if (Mapping->Members == NULL)
pMembersTmp = (LPTSTR *) LocalAlloc(LPTR, sizeof(LPTSTR));
else
pMembersTmp = (LPTSTR *) LocalReAlloc(Mapping->Members, sizeof(LPTSTR) * (Mapping->NumMembers + 1), LHND);
//
// Make sure we could allocate Mapping table
//
if (pMembersTmp == NULL) {
return NULL;
} else {
Mapping->Members = pMembersTmp;
}
cch = lstrlen(User) + 1;
NewName = (LPTSTR) LocalAlloc(LPTR, cch * sizeof(TCHAR));
if (NewName == NULL)
return NULL;
// now copy it over...
Mapping->Members[Mapping->NumMembers] = NewName;
hr = StringCchCopy(NewName, cch, User);
ASSERT(SUCCEEDED(hr));
Mapping->NumMembers++;
// Have added the entry - now need to sort it in order of the Mapping names
qsort((void *) Mapping->Members, (size_t) Mapping->NumMembers, sizeof(LPTSTR), MappingUserListCompare);
return Mapping;
} // MappingUserListAdd
/////////////////////////////////////////////////////////////////////////
NTSTATUS
MappingUserListDelete(
LPTSTR MappingName,
LPTSTR User
)
/*++
Routine Description:
Arguments:
MappingName -
Return Value:
Pointer to added Mapping table entry, or NULL if failed.
--*/
{
PMAPPING_RECORD Mapping;
LPTSTR pUser;
ULONG i;
LPTSTR *pMembersTmp;
#if DBG
if (TraceFlags & TRACE_FUNCTION_TRACE)
dprintf(TEXT("LLS TRACE: MappingUserListDelete\n"));
#endif
//
// Get mapping record based on name given
//
Mapping = MappingListFind(MappingName);
if (Mapping == NULL)
return STATUS_OBJECT_NAME_NOT_FOUND;
//
// Find the given user
//
pUser = MappingUserListFind(User, Mapping->NumMembers, Mapping->Members);
if (pUser == NULL)
return STATUS_OBJECT_NAME_NOT_FOUND;
//
// Check if this is the last user
//
if (Mapping->NumMembers == 1) {
LocalFree(pUser);
LocalFree(Mapping->Members);
Mapping->Members = NULL;
Mapping->NumMembers = 0;
return STATUS_SUCCESS;
}
//
// Not the last member so find it in the list
//
i = 0;
while ((i < Mapping->NumMembers) && (lstrcmpi(Mapping->Members[i], User)))
i++;
//
// Now move everything below it up.
//
i++;
while (i < Mapping->NumMembers) {
//swi, code review, why not Mapping->Members[i-1]=Mapping->Members[i];?
memcpy(&Mapping->Members[i-1], &Mapping->Members[i], sizeof(LPTSTR));
i++;
}
pMembersTmp = (LPTSTR *) LocalReAlloc(Mapping->Members, sizeof(LPTSTR) * (Mapping->NumMembers - 1), LHND);
//
// Make sure we could allocate Mapping table
//
if (pMembersTmp != NULL) {
Mapping->Members = pMembersTmp;
}
Mapping->NumMembers--;
LocalFree(pUser);
return STATUS_SUCCESS;
} // MappingUserListDelete
#if DBG
/////////////////////////////////////////////////////////////////////////
VOID
MappingListDebugDump( )
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
ULONG i = 0;
//
// Need to scan list so get read access.
//
RtlAcquireResourceShared(&MappingListLock, TRUE);
dprintf(TEXT("Mapping Table, # Entries: %lu\n"), MappingListSize);
if (MappingList == NULL)
goto MappingListDebugDumpExit;
for (i = 0; i < MappingListSize; i++) {
dprintf(TEXT(" Name: %s Flags: 0x%4lX LT: %2lu Lic: %4lu # Mem: %4lu Comment: %s\n"),
MappingList[i]->Name, MappingList[i]->Flags, MappingList[i]->LicenseListSize, MappingList[i]->Licenses, MappingList[i]->NumMembers, MappingList[i]->Comment);
}
MappingListDebugDumpExit:
RtlReleaseResource(&MappingListLock);
return;
} // MappingListDebugDump
/////////////////////////////////////////////////////////////////////////
VOID
MappingListDebugInfoDump( PVOID Data )
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
ULONG i;
PMAPPING_RECORD Mapping = NULL;
RtlAcquireResourceShared(&MappingListLock, TRUE);
dprintf(TEXT("Mapping Table, # Entries: %lu\n"), MappingListSize);
if (Data == NULL)
goto MappingListDebugInfoDumpExit;
if (MappingList == NULL)
goto MappingListDebugInfoDumpExit;
if (lstrlen((LPWSTR) Data) > 0) {
Mapping = MappingListFind((LPTSTR) Data);
if (Mapping != NULL) {
dprintf(TEXT(" Name: %s Flags: 0x%4lX LT: %2lu Lic: %4lu # Mem: %4lu Comment: %s\n"),
Mapping->Name, Mapping->Flags, Mapping->LicenseListSize, Mapping->Licenses, Mapping->NumMembers, Mapping->Comment);
if (Mapping->NumMembers != 0)
dprintf(TEXT("\nMembers\n"));
for (i = 0; i < Mapping->NumMembers; i++)
dprintf(TEXT(" %s\n"), Mapping->Members[i]);
if (Mapping->LicenseListSize != 0)
dprintf(TEXT("\nLicenseTable\n"));
for (i = 0; i < Mapping->LicenseListSize; i++)
dprintf( TEXT(" Flags: 0x%4lX Ref: %2lu LN: %2lu Svc: %s\n"),
Mapping->LicenseList[i]->Flags,
Mapping->LicenseList[i]->RefCount,
Mapping->LicenseList[i]->LicensesNeeded,
Mapping->LicenseList[i]->Service->Name );
} else
dprintf(TEXT("Mapping not found: %s\n"), (LPTSTR) Data);
}
MappingListDebugInfoDumpExit:
RtlReleaseResource(&MappingListLock);
} // MappingListDebugInfoDump
#endif