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[SAMSRV]

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Create and store a security descriptor for the server object.

svn path=/trunk/; revision=59317
This commit is contained in:
Eric Kohl 2013-06-23 14:26:18 +00:00
parent 6f4f0633e6
commit 42f3cd76ad
4 changed files with 313 additions and 0 deletions
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1
reactos/dll/win32/samsrv/CMakeLists.txt
View file

@ -15,6 +15,7 @@ list(APPEND SOURCE
registry.c
samrpc.c
samsrv.c
security.c
setup.c
user.c
utils.c

7
reactos/dll/win32/samsrv/samsrv.h
View file

@ -300,6 +300,13 @@ VOID
SampStartRpcServer(VOID);
/* security.c */
NTSTATUS
SampCreateServerSD(OUT PSECURITY_DESCRIPTOR *ServerSd,
OUT PULONG Size);
/* setup.c */
BOOL

286
reactos/dll/win32/samsrv/security.c Normal file
View file

@ -0,0 +1,286 @@
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: Security Account Manager (SAM) Server
* FILE: reactos/dll/win32/samsrv/security.c
* PURPOSE: Seccurity descriptor functions
*
* PROGRAMMERS: Eric Kohl
*/
/* INCLUDES ****************************************************************/
#include "samsrv.h"
WINE_DEFAULT_DEBUG_CHANNEL(samsrv);
/* GLOBALS *****************************************************************/
static SID_IDENTIFIER_AUTHORITY WorldAuthority = {SECURITY_WORLD_SID_AUTHORITY};
static SID_IDENTIFIER_AUTHORITY NtAuthority = {SECURITY_NT_AUTHORITY};
/* FUNCTIONS ***************************************************************/
NTSTATUS
SampCreateServerSD(OUT PSECURITY_DESCRIPTOR *ServerSd,
OUT PULONG Size)
{
PSECURITY_DESCRIPTOR AbsSD = NULL;
PSECURITY_DESCRIPTOR RelSD = NULL;
PSID EveryoneSid = NULL;
PSID AnonymousSid = NULL;
PSID AdministratorsSid = NULL;
PACL Dacl = NULL;
PACL Sacl = NULL;
ULONG DaclSize;
ULONG SaclSize;
ULONG RelSDSize = 0;
NTSTATUS Status = STATUS_SUCCESS;
/* Create the Everyone SID */
Status = RtlAllocateAndInitializeSid(&WorldAuthority,
1,
SECURITY_WORLD_RID,
0,
0,
0,
0,
0,
0,
0,
&EveryoneSid);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
/* Create the Anonymous SID */
Status = RtlAllocateAndInitializeSid(&NtAuthority,
1,
SECURITY_ANONYMOUS_LOGON_RID,
0,
0,
0,
0,
0,
0,
0,
&AnonymousSid);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
/* Create the Administrators SID */
Status = RtlAllocateAndInitializeSid(&NtAuthority,
2,
SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS,
0,
0,
0,
0,
0,
0,
&AdministratorsSid);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
/* Allocate a buffer for the absolute SD */
AbsSD = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
sizeof(SECURITY_DESCRIPTOR));
if (AbsSD == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
ASSERT(Status == STATUS_SUCCESS);
goto done;
}
/* Create the absolute SD */
Status = RtlCreateSecurityDescriptor(AbsSD,
SECURITY_DESCRIPTOR_REVISION);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
/* allocate and create the DACL */
DaclSize = sizeof(ACL) +
2 * sizeof(ACE) +
RtlLengthSid(EveryoneSid) +
RtlLengthSid(AdministratorsSid);
Dacl = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
DaclSize);
if (Dacl == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
ASSERT(Status == STATUS_SUCCESS);
goto done;
}
Status = RtlCreateAcl(Dacl,
DaclSize,
ACL_REVISION);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
Status = RtlAddAccessAllowedAce(Dacl,
ACL_REVISION,
SAM_SERVER_READ | SAM_SERVER_EXECUTE,
EveryoneSid);
ASSERT(NT_SUCCESS(Status));
if (!NT_SUCCESS(Status))
goto done;
Status = RtlAddAccessAllowedAce(Dacl,
ACL_REVISION,
SAM_SERVER_ALL_ACCESS,
AdministratorsSid);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* Set the DACL */
Status = RtlSetDaclSecurityDescriptor(AbsSD,
TRUE,
Dacl,
FALSE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* allocate and create the SACL */
SaclSize = sizeof(ACL) +
2 * sizeof(ACE) +
RtlLengthSid(EveryoneSid) +
RtlLengthSid(AnonymousSid);
Sacl = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
DaclSize);
if (Sacl == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
ASSERT(Status == STATUS_SUCCESS);
goto done;
}
Status = RtlCreateAcl(Sacl,
SaclSize,
ACL_REVISION);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
Status = RtlAddAuditAccessAce(Sacl,
ACL_REVISION,
ACCESS_SYSTEM_SECURITY | WRITE_DAC | DELETE |
SAM_SERVER_CREATE_DOMAIN | SAM_SERVER_INITIALIZE |
SAM_SERVER_SHUTDOWN,
EveryoneSid,
TRUE,
TRUE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
Status = RtlAddAuditAccessAce(Sacl,
ACL_REVISION,
STANDARD_RIGHTS_ALL | SPECIFIC_RIGHTS_ALL,
AnonymousSid,
TRUE,
TRUE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* Set the SACL */
Status = RtlSetSaclSecurityDescriptor(AbsSD,
TRUE,
Sacl,
FALSE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* Set the owner SID */
Status = RtlSetOwnerSecurityDescriptor(AbsSD,
AdministratorsSid,
FALSE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* Set the group SID */
Status = RtlSetGroupSecurityDescriptor(AbsSD,
AdministratorsSid,
FALSE);
ASSERT(Status == STATUS_SUCCESS);
if (!NT_SUCCESS(Status))
goto done;
/* Get the reqired buffer size for the self-relative SD */
Status = RtlAbsoluteToSelfRelativeSD(AbsSD,
NULL,
&RelSDSize);
if (Status != STATUS_BUFFER_TOO_SMALL)
goto done;
/* Allocate a buffer for the self-relative SD */
RelSD = RtlAllocateHeap(RtlGetProcessHeap(),
HEAP_ZERO_MEMORY,
RelSDSize);
if (RelSD == NULL)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
ASSERT(Status == STATUS_SUCCESS);
goto done;
}
/* Convert the absolute SD to self-relative format */
Status = RtlAbsoluteToSelfRelativeSD(AbsSD,
RelSD,
&RelSDSize);
if (Status == STATUS_BUFFER_TOO_SMALL)
{
ASSERT(Status == STATUS_SUCCESS);
goto done;
}
*ServerSd = RelSD;
*Size = RelSDSize;
done:
if (!NT_SUCCESS(Status))
{
if (RelSD != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, RelSD);
}
if (EveryoneSid != NULL)
RtlFreeSid(EveryoneSid);
if (AnonymousSid != NULL)
RtlFreeSid(AnonymousSid);
if (AdministratorsSid != NULL)
RtlFreeSid(AdministratorsSid);
if (Dacl != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, Dacl);
if (Sacl != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, Sacl);
if (AbsSD != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, AbsSD);
return Status;
}
/* EOF */

19
reactos/dll/win32/samsrv/setup.c
View file

@ -722,6 +722,8 @@ SampSetupCreateServer(IN HANDLE hSamKey,
{
HANDLE hServerKey = NULL;
HANDLE hDomainsKey = NULL;
PSECURITY_DESCRIPTOR Sd = NULL;
ULONG SdSize = 0;
NTSTATUS Status;
Status = SampRegCreateKey(hSamKey,
@ -738,11 +740,28 @@ SampSetupCreateServer(IN HANDLE hSamKey,
if (!NT_SUCCESS(Status))
goto done;
/* Create the server SD */
Status = SampCreateServerSD(&Sd,
&SdSize);
if (!NT_SUCCESS(Status))
goto done;
/* Set SecDesc attribute*/
Status = SampRegSetValue(hServerKey,
L"SecDesc",
REG_BINARY,
Sd,
SdSize);
if (!NT_SUCCESS(Status))
goto done;
SampRegCloseKey(hDomainsKey);
*lpServerKey = hServerKey;
done:
if (Sd != NULL)
RtlFreeHeap(RtlGetProcessHeap(), 0, Sd);
return Status;
}