reactos/dll/win32/lsasrv/utils.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: Security Account Manager (SAM) Server
* FILE: reactos/dll/win32/lsasrv/utils.c
* PURPOSE: Utility functions
*
* PROGRAMMERS: Eric Kohl
*/
#include "lsasrv.h"
#include <winuser.h>
/* FUNCTIONS ***************************************************************/
INT
LsapLoadString(HINSTANCE hInstance,
UINT uId,
LPWSTR lpBuffer,
INT nBufferMax)
{
HGLOBAL hmem;
HRSRC hrsrc;
WCHAR *p;
int string_num;
int i;
/* Use loword (incremented by 1) as resourceid */
hrsrc = FindResourceW(hInstance,
MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
(LPWSTR)RT_STRING);
if (!hrsrc)
return 0;
hmem = LoadResource(hInstance, hrsrc);
if (!hmem)
return 0;
p = LockResource(hmem);
string_num = uId & 0x000f;
for (i = 0; i < string_num; i++)
p += *p + 1;
i = min(nBufferMax - 1, *p);
if (i > 0)
{
memcpy(lpBuffer, p + 1, i * sizeof(WCHAR));
lpBuffer[i] = 0;
}
else
{
if (nBufferMax > 1)
{
lpBuffer[0] = 0;
return 0;
}
}
return i;
}
INT
LsapGetResourceStringLengthEx(
_In_ HINSTANCE hInstance,
_In_ UINT uId,
_In_ USHORT usLanguage)
{
HGLOBAL hmem;
HRSRC hrsrc;
WCHAR *p;
UINT i, string_num;
/* Use loword (incremented by 1) as resourceid */
// hrsrc = FindResourceExW(hInstance,
// MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
// (LPWSTR)RT_STRING,
// usLanguage);
hrsrc = FindResourceW(hInstance,
MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
(LPWSTR)RT_STRING);
if (!hrsrc)
return 0;
hmem = LoadResource(hInstance, hrsrc);
if (!hmem)
return 0;
p = LockResource(hmem);
string_num = uId & 0x000f;
for (i = 0; i < string_num; i++)
p += *p + 1;
return *p + 1;
}
INT
LsapLoadStringEx(
_In_ HINSTANCE hInstance,
_In_ UINT uId,
_In_ USHORT usLanguage,
_Out_ LPWSTR lpBuffer,
_Out_ INT nBufferMax)
{
HGLOBAL hmem;
HRSRC hrsrc;
WCHAR *p;
int string_num;
int i;
/* Use loword (incremented by 1) as resourceid */
// hrsrc = FindResourceExW(hInstance,
// MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
// (LPWSTR)RT_STRING,
// usLanguage);
hrsrc = FindResourceW(hInstance,
MAKEINTRESOURCEW((LOWORD(uId) >> 4) + 1),
(LPWSTR)RT_STRING);
if (!hrsrc)
return 0;
hmem = LoadResource(hInstance, hrsrc);
if (!hmem)
return 0;
p = LockResource(hmem);
string_num = uId & 0x000f;
for (i = 0; i < string_num; i++)
p += *p + 1;
i = min(nBufferMax - 1, *p);
if (i > 0)
{
memcpy(lpBuffer, p + 1, i * sizeof(WCHAR));
lpBuffer[i] = 0;
}
else
{
if (nBufferMax > 1)
{
lpBuffer[0] = 0;
return 0;
}
}
return i;
}
PSID
LsapAppendRidToSid(
PSID SrcSid,
ULONG Rid)
{
ULONG Rids[8] = {0, 0, 0, 0, 0, 0, 0, 0};
UCHAR RidCount;
PSID DstSid;
ULONG i;
RidCount = *RtlSubAuthorityCountSid(SrcSid);
if (RidCount >= 8)
return NULL;
for (i = 0; i < RidCount; i++)
Rids[i] = *RtlSubAuthoritySid(SrcSid, i);
Rids[RidCount] = Rid;
RidCount++;
RtlAllocateAndInitializeSid(RtlIdentifierAuthoritySid(SrcSid),
RidCount,
Rids[0],
Rids[1],
Rids[2],
Rids[3],
Rids[4],
Rids[5],
Rids[6],
Rids[7],
&DstSid);
return DstSid;
}
/* EOF */