reactos/base/system/winlogon/environment.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Winlogon
* FILE: base/system/winlogon/environment.c
* PURPOSE: User environment routines
* PROGRAMMERS: Thomas Weidenmueller (w3seek@users.sourceforge.net)
* Herv<EFBFBD> Poussineau (hpoussin@reactos.org)
* Eric Kohl
*/
/* INCLUDES *****************************************************************/
#include "winlogon.h"
/* FUNCTIONS ****************************************************************/
static
VOID
BuildVolatileEnvironment(
IN PWLSESSION Session,
IN HKEY hKeyCurrentUser)
{
WCHAR szPath[MAX_PATH + 1];
LPCWSTR wstr;
SIZE_T size;
WCHAR szEnvKey[MAX_PATH];
WCHAR szEnvValue[1024];
SIZE_T length;
LPWSTR eqptr, endptr;
DWORD dwDisp;
LONG lError;
HKEY hKeyVolatileEnv;
HKEY hKeyShellFolders;
DWORD dwType;
DWORD dwSize;
/* Create the 'Volatile Environment' key */
lError = RegCreateKeyExW(hKeyCurrentUser,
L"Volatile Environment",
0,
NULL,
REG_OPTION_VOLATILE,
KEY_WRITE,
NULL,
&hKeyVolatileEnv,
&dwDisp);
if (lError != ERROR_SUCCESS)
{
WARN("WL: RegCreateKeyExW() failed to create the volatile environment key (Error: %ld)\n", lError);
return;
}
/* Parse the environment variables and add them to the volatile environment key */
if (Session->Profile->dwType == WLX_PROFILE_TYPE_V2_0 &&
Session->Profile->pszEnvironment != NULL)
{
wstr = Session->Profile->pszEnvironment;
while (*wstr != UNICODE_NULL)
{
size = wcslen(wstr) + 1;
eqptr = wcschr(wstr, L'=');
if (eqptr != NULL)
{
endptr = eqptr;
endptr--;
while (iswspace(*endptr))
endptr--;
length = (SIZE_T)(endptr - wstr + 1);
wcsncpy(szEnvKey, wstr, length);
szEnvKey[length] = 0;
eqptr++;
while (iswspace(*eqptr))
eqptr++;
wcscpy(szEnvValue, eqptr);
RegSetValueExW(hKeyVolatileEnv,
szEnvKey,
0,
REG_SZ,
(LPBYTE)szEnvValue,
(wcslen(szEnvValue) + 1) * sizeof(WCHAR));
}
wstr += size;
}
}
/* Set the 'APPDATA' environment variable */
lError = RegOpenKeyExW(hKeyCurrentUser,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders",
0,
KEY_READ,
&hKeyShellFolders);
if (lError == ERROR_SUCCESS)
{
dwSize = (MAX_PATH + 1) * sizeof(WCHAR);
lError = RegQueryValueExW(hKeyShellFolders,
L"AppData",
NULL,
&dwType,
(LPBYTE)szPath,
&dwSize);
if (lError == ERROR_SUCCESS)
{
TRACE("APPDATA path: %S\n", szPath);
RegSetValueExW(hKeyVolatileEnv,
L"APPDATA",
0,
REG_SZ,
(LPBYTE)szPath,
(wcslen(szPath) + 1) * sizeof(WCHAR));
}
RegCloseKey(hKeyShellFolders);
}
RegCloseKey(hKeyVolatileEnv);
}
BOOL
CreateUserEnvironment(
IN PWLSESSION Session)
{
HKEY hKeyCurrentUser;
LONG lError;
TRACE("WL: CreateUserEnvironment called\n");
/* Impersonate the new user */
if (!ImpersonateLoggedOnUser(Session->UserToken))
{
ERR("ImpersonateLoggedOnUser() failed with error %lu\n", GetLastError());
return FALSE;
}
/* Open the new user HKCU key */
lError = RegOpenCurrentUser(KEY_CREATE_SUB_KEY,
&hKeyCurrentUser);
if (lError == ERROR_SUCCESS)
{
BuildVolatileEnvironment(Session,
hKeyCurrentUser);
RegCloseKey(hKeyCurrentUser);
}
/* Revert the impersonation */
RevertToSelf();
TRACE("WL: CreateUserEnvironment done\n");
return TRUE;
}