reactos/base/services/svchost/globals.c

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/*
* PROJECT: ReactOS Service Host
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: base/services/svchost/globals.c
* PURPOSE: Functions to initialize global settings and support
* PROGRAMMERS: ReactOS Portable Systems Group
*/
/* INCLUDES ******************************************************************/
#include "svchost.h"
/* GLOBALS *******************************************************************/
PSID NullSid, WorldSid, LocalSid, NetworkSid, InteractiveSid, ServiceLogonSid;
PSID LocalSystemSid, LocalServiceSid, NetworkServiceSid, BuiltinDomainSid;
PSID AuthenticatedUserSid, AnonymousLogonSid, AliasAdminsSid, AliasUsersSid;
PSID AliasGuestsSid, AliasPowerUsersSid, AliasAccountOpsSid, AliasSystemOpsSid;
PSID AliasPrintOpsSid;
PSID AliasBackupOpsSid;
SID_DATA SidData[12] =
{
{ &NullSid, { SECURITY_NULL_SID_AUTHORITY }, SECURITY_NULL_RID },
{ &WorldSid, { SECURITY_WORLD_SID_AUTHORITY }, SECURITY_WORLD_RID },
{ &LocalSid, { SECURITY_LOCAL_SID_AUTHORITY }, SECURITY_LOCAL_RID },
{ &NetworkSid, { SECURITY_NT_AUTHORITY }, SECURITY_NETWORK_RID },
{ &InteractiveSid, { SECURITY_NT_AUTHORITY }, SECURITY_INTERACTIVE_RID },
{ &ServiceLogonSid, { SECURITY_NT_AUTHORITY }, SECURITY_SERVICE_RID },
{ &LocalSystemSid, { SECURITY_NT_AUTHORITY }, SECURITY_LOCAL_SYSTEM_RID },
{ &LocalServiceSid, { SECURITY_NT_AUTHORITY }, SECURITY_LOCAL_SERVICE_RID },
{ &NetworkServiceSid, { SECURITY_NT_AUTHORITY }, SECURITY_NETWORK_SERVICE_RID },
{ &BuiltinDomainSid, { SECURITY_NT_AUTHORITY }, SECURITY_BUILTIN_DOMAIN_RID },
{ &AuthenticatedUserSid, { SECURITY_NT_AUTHORITY }, SECURITY_AUTHENTICATED_USER_RID },
{ &AnonymousLogonSid, { SECURITY_NT_AUTHORITY }, SECURITY_ANONYMOUS_LOGON_RID },
};
DOMAIN_SID_DATA DomainSidData[8] =
{
{ &AliasAdminsSid, DOMAIN_ALIAS_RID_ADMINS },
{ &AliasUsersSid, DOMAIN_ALIAS_RID_USERS },
{ &AliasGuestsSid, DOMAIN_ALIAS_RID_GUESTS },
{ &AliasPowerUsersSid, DOMAIN_ALIAS_RID_POWER_USERS },
{ &AliasAccountOpsSid, DOMAIN_ALIAS_RID_ACCOUNT_OPS },
{ &AliasSystemOpsSid, DOMAIN_ALIAS_RID_SYSTEM_OPS },
{ &AliasPrintOpsSid, DOMAIN_ALIAS_RID_PRINT_OPS },
{ &AliasBackupOpsSid, DOMAIN_ALIAS_RID_BACKUP_OPS },
};
PSVCHOST_GLOBALS g_pSvchostSharedGlobals;
DWORD g_SvchostInitFlag;
HANDLE g_hHeap;
/* FUNCTIONS *****************************************************************/
VOID
WINAPI
MemInit (
_In_ HANDLE Heap
)
{
/* Save the heap handle */
g_hHeap = Heap;
}
BOOL
WINAPI
MemFree (
_In_ LPVOID lpMem
)
{
/* Free memory back into the heap */
return HeapFree(g_hHeap, 0, lpMem);
}
PVOID
WINAPI
MemAlloc (
_In_ DWORD dwFlags,
_In_ DWORD dwBytes
)
{
/* Allocate memory from the heap */
return HeapAlloc(g_hHeap, dwFlags, dwBytes);
}
VOID
WINAPI
SvchostBuildSharedGlobals (
VOID
)
{
ASSERT(g_pSvchostSharedGlobals == NULL);
/* Is RPC initialized? */
if (!(g_SvchostInitFlag & SVCHOST_RPC_INIT_COMPLETE))
{
/* Nope, go initialize it */
if (!NT_SUCCESS(RpcpInitRpcServer())) return;
/* This is now done */
g_SvchostInitFlag |= SVCHOST_RPC_INIT_COMPLETE;
}
/* Is NetBIOS initialized? */
if (!(g_SvchostInitFlag & SVCHOST_NBT_INIT_COMPLETE))
{
/* Nope, set it up */
SvcNetBiosInit();
/* This is now done */
g_SvchostInitFlag |= SVCHOST_NBT_INIT_COMPLETE;
}
/* Do we have the global SIDs initialized? */
if (!(g_SvchostInitFlag & SVCHOST_SID_INIT_COMPLETE))
{
/* Create the SIDs we'll export in the global structure */
if (!NT_SUCCESS(ScCreateWellKnownSids())) return;
/* This is now done */
g_SvchostInitFlag |= SVCHOST_SID_INIT_COMPLETE;
}
/* Allocate memory for the globals */
g_pSvchostSharedGlobals = MemAlloc(HEAP_ZERO_MEMORY,
sizeof(*g_pSvchostSharedGlobals));
if (g_pSvchostSharedGlobals == NULL) return;
/* Write the pointers to the SIDs */
g_pSvchostSharedGlobals->NullSid = NullSid;
g_pSvchostSharedGlobals->WorldSid = WorldSid;
g_pSvchostSharedGlobals->LocalSid = LocalSid;
g_pSvchostSharedGlobals->NetworkSid = NetworkSid;
g_pSvchostSharedGlobals->LocalSystemSid = LocalSystemSid;
g_pSvchostSharedGlobals->LocalServiceSid = LocalServiceSid;
g_pSvchostSharedGlobals->NetworkServiceSid = NetworkServiceSid;
g_pSvchostSharedGlobals->BuiltinDomainSid = BuiltinDomainSid;
g_pSvchostSharedGlobals->AuthenticatedUserSid = AuthenticatedUserSid;
g_pSvchostSharedGlobals->AnonymousLogonSid = AnonymousLogonSid;
g_pSvchostSharedGlobals->AliasAdminsSid = AliasAdminsSid;
g_pSvchostSharedGlobals->AliasUsersSid = AliasUsersSid;
g_pSvchostSharedGlobals->AliasGuestsSid = AliasGuestsSid;
g_pSvchostSharedGlobals->AliasPowerUsersSid = AliasPowerUsersSid;
g_pSvchostSharedGlobals->AliasAccountOpsSid = AliasAccountOpsSid;
g_pSvchostSharedGlobals->AliasSystemOpsSid = AliasSystemOpsSid;
g_pSvchostSharedGlobals->AliasPrintOpsSid = AliasPrintOpsSid;
g_pSvchostSharedGlobals->AliasBackupOpsSid = AliasBackupOpsSid;
/* Write the pointers to the callbacks */
g_pSvchostSharedGlobals->RpcpStartRpcServer = RpcpStartRpcServer;
g_pSvchostSharedGlobals->RpcpStopRpcServer = RpcpStopRpcServer;
g_pSvchostSharedGlobals->RpcpStopRpcServerEx = RpcpStopRpcServerEx;
g_pSvchostSharedGlobals->SvcNetBiosOpen = SvcNetBiosOpen;
g_pSvchostSharedGlobals->SvcNetBiosClose = SvcNetBiosClose;
g_pSvchostSharedGlobals->SvcNetBiosReset = SvcNetBiosReset;
g_pSvchostSharedGlobals->SvcRegisterStopCallback = SvcRegisterStopCallback;
}
VOID
WINAPI
SvchostCharLowerW (
_In_ LPCWSTR lpSrcStr
)
{
DWORD cchSrc;
/* If there's nothing to do, bail out */
if (lpSrcStr == NULL) return;
/* Get the length of the input string */
cchSrc = wcslen(lpSrcStr);
/* Call the locale API to lower-case it */
if (LCMapStringW(LANG_USER_DEFAULT,
LCMAP_LOWERCASE,
lpSrcStr,
cchSrc + 1,
(LPWSTR)lpSrcStr,
cchSrc + 1) == FALSE)
{
DBG_ERR("SvchostCharLowerW failed for %ws\n", lpSrcStr);
}
}
NTSTATUS
NTAPI
ScDomainIdToSid (
_In_ PSID SourceSid,
_In_ ULONG DomainId,
_Out_ PSID *DestinationSid
)
{
ULONG sidCount, sidLength;
NTSTATUS status;
/* Get the length of the SID based onthe number of subauthorities */
sidCount = *RtlSubAuthorityCountSid(SourceSid);
sidLength = RtlLengthRequiredSid(sidCount + 1);
/* Allocate it */
*DestinationSid = RtlAllocateHeap(RtlGetProcessHeap(), 0, sidLength);
if (*DestinationSid)
{
/* Make a copy of it */
status = RtlCopySid(sidLength, *DestinationSid, SourceSid);
if (NT_SUCCESS(status))
{
/* Increase the subauthority count */
++*RtlSubAuthorityCountSid(*DestinationSid);
/* And add the specific domain RID we're creating */
*RtlSubAuthoritySid(*DestinationSid, sidCount) = DomainId;
/* Everything worked */
status = STATUS_SUCCESS;
}
else
{
/* The SID copy failed, so free the SID we just allocated */
RtlFreeHeap(RtlGetProcessHeap(), 0, *DestinationSid);
}
}
else
{
/* No space for the SID, bail out */
status = STATUS_NO_MEMORY;
}
/* Return back to the caller */
return status;
}
NTSTATUS
NTAPI
ScAllocateAndInitializeSid (
_Out_ PVOID *Sid,
_In_ PSID_IDENTIFIER_AUTHORITY IdentifierAuthority,
_In_ ULONG SubAuthorityCount
)
{
NTSTATUS Status;
/* Allocate room for the SID */
*Sid = RtlAllocateHeap(RtlGetProcessHeap(),
0,
RtlLengthRequiredSid(SubAuthorityCount));
if (*Sid)
{
/* Initialize it, we're done */
RtlInitializeSid(*Sid, IdentifierAuthority, SubAuthorityCount);
Status = STATUS_SUCCESS;
}
else
{
/* No memory, we'll fail */
Status = STATUS_NO_MEMORY;
}
/* Return what happened */
return Status;
}
NTSTATUS
NTAPI
ScCreateWellKnownSids (
VOID
)
{
ULONG i;
NTSTATUS Status;
/* Loop the non-domain SIDs */
for (i = 0; i < RTL_NUMBER_OF(SidData); i++)
{
/* Convert our optimized structure into an actual SID */
Status = ScAllocateAndInitializeSid(&SidData[i].Sid,
&SidData[i].Authority,
1);
if (!NT_SUCCESS(Status)) break;
/* Write the correct sub-authority */
*RtlSubAuthoritySid(SidData[i].Sid, 0) = SidData[i].SubAuthority;
}
/* Now loop the domain SIDs */
for (i = 0; i < RTL_NUMBER_OF(DomainSidData); i++)
{
/* Convert our optimized structure into an actual SID */
Status = ScDomainIdToSid(BuiltinDomainSid,
DomainSidData[i].SubAuthority,
&DomainSidData[i].Sid);
if (!NT_SUCCESS(Status)) break;
}
/* If we got to the end, return success */
return (i == RTL_NUMBER_OF(DomainSidData)) ? STATUS_SUCCESS : STATUS_NO_MEMORY;
}