mirror of
https://github.com/reactos/reactos.git
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164 lines
3.7 KiB
C
164 lines
3.7 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: Security Account Manager (SAM) Server
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* FILE: reactos/dll/win32/samsrv/utils.c
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* PURPOSE: Utility functions
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*
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* PROGRAMMERS: Eric Kohl
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*/
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#include "samsrv.h"
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#include <winuser.h>
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/* FUNCTIONS ***************************************************************/
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INT
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SampLoadString(HINSTANCE hInstance,
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UINT uId,
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LPWSTR lpBuffer,
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INT nBufferMax)
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{
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HGLOBAL hmem;
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HRSRC hrsrc;
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WCHAR *p;
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int string_num;
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int i;
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/* Use loword (incremented by 1) as resourceid */
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hrsrc = FindResourceW(hInstance,
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MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
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(LPWSTR)RT_STRING);
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if (!hrsrc)
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return 0;
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hmem = LoadResource(hInstance, hrsrc);
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if (!hmem)
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return 0;
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p = LockResource(hmem);
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string_num = uId & 0x000f;
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for (i = 0; i < string_num; i++)
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p += *p + 1;
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i = min(nBufferMax - 1, *p);
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if (i > 0)
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{
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memcpy(lpBuffer, p + 1, i * sizeof(WCHAR));
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lpBuffer[i] = 0;
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}
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else
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{
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if (nBufferMax > 1)
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{
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lpBuffer[0] = 0;
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return 0;
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}
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}
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return i;
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}
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BOOL
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SampIsSetupRunning(VOID)
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{
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DWORD dwError;
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HKEY hKey;
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DWORD dwType;
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DWORD dwSize;
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DWORD dwSetupType;
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TRACE("SampIsSetupRunning()\n");
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/* Open key */
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dwError = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"SYSTEM\\Setup",
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0,
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KEY_QUERY_VALUE,
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&hKey);
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if (dwError != ERROR_SUCCESS)
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return FALSE;
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/* Read key */
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dwSize = sizeof(DWORD);
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dwError = RegQueryValueExW(hKey,
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L"SetupType",
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NULL,
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&dwType,
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(LPBYTE)&dwSetupType,
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&dwSize);
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/* Close key, and check if returned values are correct */
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RegCloseKey(hKey);
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if (dwError != ERROR_SUCCESS || dwType != REG_DWORD || dwSize != sizeof(DWORD))
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return FALSE;
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TRACE("SampIsSetupRunning() returns %s\n", (dwSetupType != 0) ? "TRUE" : "FALSE");
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return (dwSetupType != 0);
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}
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PSID
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AppendRidToSid(PSID SrcSid,
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ULONG Rid)
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{
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ULONG Rids[8] = {0, 0, 0, 0, 0, 0, 0, 0};
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UCHAR RidCount;
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PSID DstSid;
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ULONG i;
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RidCount = *RtlSubAuthorityCountSid(SrcSid);
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if (RidCount >= 8)
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return NULL;
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for (i = 0; i < RidCount; i++)
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Rids[i] = *RtlSubAuthoritySid(SrcSid, i);
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Rids[RidCount] = Rid;
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RidCount++;
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RtlAllocateAndInitializeSid(RtlIdentifierAuthoritySid(SrcSid),
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RidCount,
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Rids[0],
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Rids[1],
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Rids[2],
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Rids[3],
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Rids[4],
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Rids[5],
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Rids[6],
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Rids[7],
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&DstSid);
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return DstSid;
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}
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NTSTATUS
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SampGetRidFromSid(IN PSID Sid,
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OUT PULONG Rid)
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{
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UCHAR RidCount;
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RidCount = *RtlSubAuthorityCountSid(Sid);
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if (RidCount < 1)
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return STATUS_INVALID_SID;
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*Rid = *RtlSubAuthoritySid(Sid, RidCount - 1);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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SampCheckAccountName(IN PRPC_UNICODE_STRING AccountName,
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IN USHORT MaxLength)
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{
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if (AccountName->Length > MaxLength * sizeof(WCHAR))
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return STATUS_INVALID_ACCOUNT_NAME;
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return STATUS_SUCCESS;
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}
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/* EOF */
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