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