globals.c File Reference

#include "svchost.h"

Include dependency graph for globals.c:

Go to the source code of this file.

Functions
VOID WINAPI	MemInit (_In_ HANDLE Heap)
BOOL WINAPI	MemFree (_In_ LPVOID lpMem)
PVOID WINAPI	MemAlloc (_In_ DWORD dwFlags, _In_ DWORD dwBytes)
VOID WINAPI	SvchostBuildSharedGlobals (VOID)
VOID WINAPI	SvchostCharLowerW (_In_ LPCWSTR lpSrcStr)
NTSTATUS NTAPI	ScDomainIdToSid (_In_ PSID SourceSid, _In_ ULONG DomainId, _Out_ PSID *DestinationSid)
NTSTATUS NTAPI	ScAllocateAndInitializeSid (_Out_ PSID *Sid, _In_ PSID_IDENTIFIER_AUTHORITY IdentifierAuthority, _In_ ULONG SubAuthorityCount)
NTSTATUS NTAPI	ScCreateWellKnownSids (VOID)

Variables
PSID	NullSid
PSID	WorldSid
PSID	LocalSid
PSID	NetworkSid
PSID	InteractiveSid
PSID	ServiceLogonSid
PSID	LocalSystemSid
PSID	LocalServiceSid
PSID	NetworkServiceSid
PSID	BuiltinDomainSid
PSID	AuthenticatedUserSid
PSID	AnonymousLogonSid
PSID	AliasAdminsSid
PSID	AliasUsersSid
PSID	AliasGuestsSid
PSID	AliasPowerUsersSid
PSID	AliasAccountOpsSid
PSID	AliasSystemOpsSid
PSID	AliasPrintOpsSid
PSID	AliasBackupOpsSid
SID_DATA	SidData [12]
DOMAIN_SID_DATA	DomainSidData [8]
PSVCHOST_GLOBAL_DATA	g_pSvchostSharedGlobals
DWORD	g_SvchostInitFlag
HANDLE	g_hHeap

Function Documentation

MemAlloc()

PVOID WINAPI MemAlloc	(	_In_ DWORD	dwFlags,
		_In_ DWORD	dwBytes
	)

Definition at line 78 of file globals.c.

{
    /* Allocate memory from the heap */
    return HeapAlloc(g_hHeap, dwFlags, dwBytes);
}

Referenced by SvchostBuildSharedGlobals().

MemFree()

BOOL WINAPI MemFree

(

_In_ LPVOID

lpMem

)

Definition at line 68 of file globals.c.

{
    /* Free memory back into the heap */
    return HeapFree(g_hHeap, 0, lpMem);
}

MemInit()

VOID WINAPI MemInit

(

_In_ HANDLE

Heap

)

Definition at line 58 of file globals.c.

{
    /* Save the heap handle */
    g_hHeap = Heap;
}

Referenced by wmainCRTStartup().

ScAllocateAndInitializeSid()

NTSTATUS NTAPI ScAllocateAndInitializeSid	(	_Out_ PSID *	Sid,
		_In_ PSID_IDENTIFIER_AUTHORITY	IdentifierAuthority,
		_In_ ULONG	SubAuthorityCount
	)

Definition at line 236 of file globals.c.

{
    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;
}

Referenced by ScCreateWellKnownSids().

ScCreateWellKnownSids()

NTSTATUS NTAPI ScCreateWellKnownSids

(

VOID

)

Definition at line 266 of file globals.c.

{
    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))
        {
            DBG_ERR("ScAllocateAndInitializeSid failed for %u\n", i);
            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))
        {
            DBG_ERR("ScDomainIdToSid failed for %u\n", i);
            break;
        }
    }
 
    /* If we got to the end, return success */
    return (i == RTL_NUMBER_OF(DomainSidData)) ? STATUS_SUCCESS : STATUS_NO_MEMORY;
}

Referenced by SvchostBuildSharedGlobals().

ScDomainIdToSid()

NTSTATUS NTAPI ScDomainIdToSid	(	_In_ PSID	SourceSid,
		_In_ ULONG	DomainId,
		_Out_ PSID *	DestinationSid
	)

Definition at line 188 of file globals.c.

{
    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;
}

Referenced by ScCreateWellKnownSids().

SvchostBuildSharedGlobals()

VOID WINAPI SvchostBuildSharedGlobals

(

VOID

)

Definition at line 89 of file globals.c.

{
    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->StartRpcServer = RpcpStartRpcServer;
    g_pSvchostSharedGlobals->StopRpcServer = RpcpStopRpcServer;
    g_pSvchostSharedGlobals->StopRpcServerEx = RpcpStopRpcServerEx;
    g_pSvchostSharedGlobals->NetBiosOpen = SvcNetBiosOpen;
    g_pSvchostSharedGlobals->NetBiosClose = SvcNetBiosClose;
    g_pSvchostSharedGlobals->NetBiosReset = SvcNetBiosReset;
    g_pSvchostSharedGlobals->RegisterStopCallback = SvcRegisterStopCallback;
}

Referenced by ServiceStarter().

SvchostCharLowerW()

VOID WINAPI SvchostCharLowerW

(

_In_ LPCWSTR

lpSrcStr

)

Definition at line 162 of file globals.c.

{
    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);
    }
}

Referenced by BuildCommandOptions(), and GetServiceMainFunctions().

Variable Documentation

AliasAccountOpsSid

PSID AliasAccountOpsSid

Definition at line 18 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasAdminsSid

PSID AliasAdminsSid

Definition at line 17 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasBackupOpsSid

PSID AliasBackupOpsSid

Definition at line 20 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasGuestsSid

PSID AliasGuestsSid

Definition at line 18 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasPowerUsersSid

PSID AliasPowerUsersSid

Definition at line 18 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasPrintOpsSid

PSID AliasPrintOpsSid

Definition at line 19 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasSystemOpsSid

PSID AliasSystemOpsSid

Definition at line 18 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AliasUsersSid

PSID AliasUsersSid

Definition at line 17 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AnonymousLogonSid

PSID AnonymousLogonSid

Definition at line 17 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

AuthenticatedUserSid

PSID AuthenticatedUserSid

Definition at line 17 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

BuiltinDomainSid

PSID BuiltinDomainSid

Definition at line 16 of file globals.c.

Referenced by GetBuiltinDomainSid(), LsapAddSamGroups(), LsapLookupBuiltinDomainSids(), LsapLookupBuiltinNames(), LsapLookupIsolatedBuiltinNames(), LsapLookupIsolatedNames(), NetUserGetInfo(), ScCreateWellKnownSids(), and SvchostBuildSharedGlobals().

DomainSidData

DOMAIN_SID_DATA DomainSidData[8]

Initial value:

=
{
    { &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 },
}

Definition at line 38 of file globals.c.

Referenced by ScCreateWellKnownSids().

g_hHeap

HANDLE g_hHeap

Definition at line 52 of file globals.c.

Referenced by MemAlloc(), MemFree(), and MemInit().

g_pSvchostSharedGlobals

PSVCHOST_GLOBAL_DATA g_pSvchostSharedGlobals

Definition at line 50 of file globals.c.

Referenced by ServiceStarter(), and SvchostBuildSharedGlobals().

g_SvchostInitFlag

DWORD g_SvchostInitFlag

Definition at line 51 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

InteractiveSid

PSID InteractiveSid

Definition at line 15 of file globals.c.

Referenced by AllowDesktopAccessToUser(), AllowWinstaAccessToUser(), and CreateScreenSaverSecurity().

LocalServiceSid

PSID LocalServiceSid

Definition at line 16 of file globals.c.

Referenced by LsapCreatePolicySd(), and SvchostBuildSharedGlobals().

LocalSid

PSID LocalSid

Definition at line 15 of file globals.c.

Referenced by LogonUserExW(), MyLogonUser(), and SvchostBuildSharedGlobals().

LocalSystemSid

PSID LocalSystemSid

Definition at line 16 of file globals.c.

Referenced by CreateDefaultSecurityDescriptor(), CreateNewDefaultDacl(), LsapCreateAccountSd(), LsapCreatePolicySd(), LsapCreateSecretSd(), LsapCreateTokenSd(), RtlpSysVolCheckOwnerAndSecurity(), RtlpSysVolCreateSecurityDescriptor(), and SvchostBuildSharedGlobals().

NetworkServiceSid

PSID NetworkServiceSid

Definition at line 16 of file globals.c.

Referenced by AllowDesktopAccessToUser(), AllowWinstaAccessToUser(), CreateApplicationDesktopSecurity(), CreateWinstaSecurity(), LsapCreatePolicySd(), and SvchostBuildSharedGlobals().

NetworkSid

PSID NetworkSid

Definition at line 15 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

NullSid

PSID NullSid

Definition at line 15 of file globals.c.

Referenced by SvchostBuildSharedGlobals().

ServiceLogonSid

PSID ServiceLogonSid

Definition at line 15 of file globals.c.

SidData

SID_DATA SidData[12]

Initial value:

=
{
    { &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 },
}

Definition at line 22 of file globals.c.

Referenced by ScCreateWellKnownSids().

WorldSid

PSID WorldSid

Definition at line 15 of file globals.c.

Referenced by AccessCheckEmptyMappingTest(), CreateBaseAcls(), CreateNlsSecurityDescriptor(), CSR_API(), GetAllowedWorldAce(), GetDosDevicesProtection(), QueryTokenPrivilegesAndGroupsTests(), QueryTokenRestrictedSidsTest(), SmpCreateSecurityDescriptors(), and SvchostBuildSharedGlobals().