1
0
mirror of https://github.com/bobranten/Ext4Fsd.git synced 2025-10-30 13:28:31 -05:00

Ext4Fsd master

This commit is contained in:
Bo Brantén
2020-01-19 19:08:53 +01:00
commit 7b368ccf09
272 changed files with 143529 additions and 0 deletions

466
Ext2Srv/Mount.cpp Normal file
View File

@@ -0,0 +1,466 @@
#include <Ext2Srv.h>
#include <tlhelp32.h>
#include <Sddl.h>
BOOL Ext2SetPrivilege(HANDLE token, LPCTSTR lpszPrivilegeName)
{
TOKEN_PRIVILEGES tp = {0};
LUID luid;
DWORD le;
BOOL rc;
rc = LookupPrivilegeValue(NULL, lpszPrivilegeName, &luid);
if(!rc)
goto errorout;
/* initialize token privilege */
tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
rc = AdjustTokenPrivileges(token, FALSE, &tp, NULL, NULL, NULL);
if (!rc)
le = GetLastError();
errorout:
return rc;
}
BOOL Ext2EnablePrivilege(LPCTSTR lpszPrivilegeName)
{
HANDLE token;
BOOL rc;
rc = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES |
TOKEN_QUERY | TOKEN_READ, &token);
if(!rc)
goto errorout;
rc = Ext2SetPrivilege(token, lpszPrivilegeName);
CloseHandle(token);
errorout:
return rc;
}
VOID
Ext2DrvNotify(TCHAR drive, int add)
{
DEV_BROADCAST_VOLUME dbv;
DWORD target = BSM_APPLICATIONS;
unsigned long drv = 0;
if (drive >= 'A' && drive <= 'Z')
drv = drive - 'A';
else if(drive >= 'a' && drive <= 'z')
drv = drive - 'a';
else
return;
dbv.dbcv_size = sizeof( dbv );
dbv.dbcv_devicetype = DBT_DEVTYP_VOLUME;
dbv.dbcv_reserved = 0;
dbv.dbcv_unitmask = (1 << drv);
dbv.dbcv_flags = DBTF_NET;
BroadcastSystemMessage(BSF_IGNORECURRENTTASK | BSF_FORCEIFHUNG |
BSF_NOHANG | BSF_NOTIMEOUTIFNOTHUNG,
&target, WM_DEVICECHANGE, add ?
DBT_DEVICEARRIVAL : DBT_DEVICEREMOVECOMPLETE,
(LPARAM)(DEV_BROADCAST_HDR *)&dbv );
}
DWORD Ext2QueryMgr(TCHAR *Auth, DWORD *pids, DWORD as)
{
DWORD total = 0;
HANDLE p = NULL;
PROCESSENTRY32 r = {0};
p = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (INVALID_HANDLE_VALUE == p)
return 0;
r.dwSize=sizeof(PROCESSENTRY32);
if (!Process32First(p, &r)) {
goto errorout;
}
do {
TCHAR *n = _tcsrchr(&r.szExeFile[0], _T('\\'));
if (!n)
n = &r.szExeFile[0];
if (_tcsicmp(n, Auth) == 0) {
pids[total++] = r.th32ProcessID;
if (total >= as)
break;
}
} while(Process32Next(p, &r));
errorout:
CloseHandle(p);
return total;
}
TCHAR * Ext2BuildSrvCMD(TCHAR *task)
{
TCHAR cmd[258]= {0}, *p, *refresh = NULL;
int len = 0;
if (GetModuleFileName(NULL, cmd, 256)) {
} else {
_tcscpy(cmd, GetCommandLine());
p = _tcsstr(cmd, _T("/"));
if (p)
*p = 0;
}
len = (int)_tcslen(cmd) + 40;
refresh = new TCHAR[len];
if (!refresh)
goto errorout;
memset(refresh, 0, sizeof(TCHAR)*len);
_tcscpy_s(refresh, len - 1, cmd);
_tcscat_s(refresh, len, _T(" "));
_tcscat_s(refresh, len, task);
errorout:
return refresh;
}
TCHAR *
Ext2StrStr(TCHAR *s, TCHAR *t)
{
int ls = _tcslen(s), lt = _tcslen(t), i;
for (i = 0; i + lt <= ls; i++) {
if (0 == _tcsnicmp(&s[i], t, lt))
return &s[i];
}
return NULL;
}
TCHAR * Ext2BuildUsrCMD(TCHAR *task)
{
TCHAR cmd[258]= {0}, *p, *refresh = NULL;
int len = 0;
if (GetModuleFileName(NULL, cmd, 256)) {
} else {
_tcscpy(cmd, GetCommandLine());
}
p = Ext2StrStr(cmd, _T("Ext2Srv"));
if (p)
*p = 0;
len = (int)_tcslen(cmd) + 10 + _tcslen(task);
refresh = new TCHAR[len];
if (!refresh)
goto errorout;
memset(refresh, 0, sizeof(TCHAR)*len);
_tcscpy_s(refresh, len - 1, cmd);
_tcscat_s(refresh, len, task);
errorout:
return refresh;
}
int Ext2AdjustTokenGroups(HANDLE token, LPCTSTR group)
{
TOKEN_GROUPS tg = {0};
PSID sid = NULL;
DWORD le;
BOOL rc;
rc = ConvertStringSidToSid(group, &sid);
if(!rc)
goto errorout;
/* initialize token groups */
tg.GroupCount = 1;
tg.Groups[0].Sid = sid;
tg.Groups[0].Attributes = SE_GROUP_OWNER;
rc = AdjustTokenGroups(token, FALSE, &tg, sizeof(tg), NULL, NULL);
if (!rc)
le = GetLastError();
errorout:
return rc;
}
int Ext2CreateUserToken(DWORD sid, HANDLE *token, BOOL bElevated)
{
HANDLE token_user = NULL;
int rc = -1;
if (!token)
goto errorout;
rc = WTSQueryUserToken(sid, &token_user);
if (!rc) {
rc = -1 * GetLastError();
goto errorout;
}
rc = DuplicateTokenEx(token_user, MAXIMUM_ALLOWED, NULL,
SecurityIdentification, TokenPrimary,
token);
if (!rc) {
rc = -1 * GetLastError();
goto errorout;
}
if (bElevated) {
Ext2SetPrivilege(token, SE_IMPERSONATE_NAME);
Ext2SetPrivilege(token, SE_CHANGE_NOTIFY_NAME);
Ext2SetPrivilege(token, SE_CREATE_GLOBAL_NAME);
Ext2AdjustTokenGroups(token, _T("S-1-5-32-544"));
}
errorout:
if (token_user && token_user != INVALID_HANDLE_VALUE)
CloseHandle(token_user);
return rc;
}
int Ext2StartUserTask(TCHAR *usr, TCHAR *srv, DWORD sid, BOOL bElevated)
{
LPTSTR cmd = NULL;
STARTUPINFO si = {0};
PROCESS_INFORMATION pi = {0};
HANDLE token = 0;
int rc = -1;
if (usr)
cmd = Ext2BuildUsrCMD(usr);
else
cmd = Ext2BuildSrvCMD(srv);
if (!cmd) {
rc = -1;
goto errorout;
}
rc = Ext2CreateUserToken(sid, &token, bElevated);
if (!rc) {
rc = -1 * GetLastError();
goto errorout;
}
si.cb = sizeof( STARTUPINFO );
rc = CreateProcessAsUser(token, NULL, cmd, NULL, NULL,
FALSE, NORMAL_PRIORITY_CLASS |
CREATE_NO_WINDOW, NULL, NULL,
&si, &pi );
if (!rc) {
rc = -1 * GetLastError();
goto errorout;
}
if (!GetExitCodeProcess(pi.hProcess, (LPDWORD)&rc)) {
rc = -2;
}
if (pi.hProcess != INVALID_HANDLE_VALUE) {
CloseHandle(pi.hProcess);
}
if (pi.hThread != INVALID_HANDLE_VALUE) {
CloseHandle(pi.hThread);
}
errorout:
if (cmd)
delete []cmd;
if (token)
CloseHandle(token);
return rc;
}
INT Ext2NotifyUser(TCHAR *task, ULONG mgr)
{
DWORD pid[64] = {0}, n, i, sid = 0;
INT rc = -1;
n = Ext2QueryMgr(_T("Ext2Mgr.exe"), pid, 63);
if (mgr)
pid[n++] = mgr;
for (i = 0; i < n && pid[i]; i++) {
rc = ProcessIdToSessionId(pid[i], &sid);
if (!rc) {
continue;
}
if (!mgr && mgr == pid[i]) {
n--;
rc = Ext2StartUserTask(0, task, sid, FALSE);
} else {
Ext2StartUserTask(0, task, sid, FALSE);
}
}
return rc;
}
BOOL Ext2AssignDrvLetter(TCHAR *dev, TCHAR drv)
{
TCHAR dos[8];
_stprintf_s(dos, 8, _T("%C:"), drv);
if (!DefineDosDevice(DDD_RAW_TARGET_PATH, dos, dev)) {
ErrLog("mount: failed to assigned drive letter %C:.\n", drv);
return 0;
}
Ext2DrvNotify(drv, TRUE);
return TRUE;
}
BOOL Ext2RemoveDrvLetter(TCHAR drive)
{
TCHAR dosDev[MAX_PATH];
/* remove drive letter */
_stprintf_s(dosDev, MAX_PATH, _T("%C:"), drive);
DefineDosDevice(DDD_REMOVE_DEFINITION,
dosDev, NULL);
Ext2DrvNotify(drive, FALSE);
return TRUE;
}
CHAR *Ext2QueryAutoUserList()
{
int rc = TRUE;
HKEY hKey;
CHAR keyPath[MAX_PATH];
CHAR *userList = NULL;
LONG status, type, len;
/* Open ext2fsd sevice key */
strcpy (keyPath, "SYSTEM\\CurrentControlSet\\Services\\Ext2Fsd\\Parameters") ;
status = ::RegOpenKeyEx (HKEY_LOCAL_MACHINE,
keyPath,
0,
KEY_READ | KEY_WOW64_64KEY,
&hKey) ;
if (status != ERROR_SUCCESS) {
rc = FALSE;
goto errorout;
}
/* query autorun user list */
len = MAX_PATH - 1;
userList = new CHAR[len + 1];
if (!userList)
goto errorout;
memset(userList, 0, len + 1);
status = RegQueryValueEx( hKey,
"AutorunUsers",
0,
(LPDWORD)&type,
(BYTE *)userList,
(LPDWORD)&len);
errorout:
RegCloseKey(hKey);
return userList;
}
BOOL Ext2RunMgrForCurrentUserVista()
{
CHAR *userList = NULL, *user, e;
CHAR userName[MAX_PATH] = {0};
DWORD userLen = MAX_PATH - 1;
BOOL rc = FALSE;
if (!GetUserName(userName, &userLen))
return FALSE;
userList = Ext2QueryAutoUserList();
if (!userList)
return FALSE;
user = userList;
while (user = Ext2StrStr(user, userName)) {
if (user > userList) {
e = user[-1];
if (e != ',' && e != ';') {
user = user + strlen(userName);
continue;
}
}
e = user[strlen(userName)];
if (!e || e == ',' || e == ';') {
rc = TRUE;
goto errorout;
}
user = user + strlen(userName);
}
errorout:
if (userList)
delete [] userList;
return rc;
}
INT Ext2StartMgrAsUser()
{
SHELLEXECUTEINFO sei = {0};
TCHAR cmd[258] = {0}, *t;
DWORD rc = 0;
if (!Ext2RunMgrForCurrentUserVista()) {
return 0;
}
/* sleeping 1 second before proceeding */
Sleep(1000);
/* building task CMD path */
rc = GetModuleFileName(NULL, cmd, 256);
if (!rc) {
return 0;
}
t = Ext2StrStr(cmd, "Ext2Srv.exe");
if (!t) {
return 0;
}
t[4] = _T('M');
t[5] = _T('g');
t[6] = _T('r');
/* starting Ext2Mgr as elevated */
sei.cbSize = sizeof(SHELLEXECUTEINFO);
sei.fMask = SEE_MASK_FLAG_DDEWAIT |
SEE_MASK_NOCLOSEPROCESS;
sei.hwnd = NULL;
sei.lpFile = cmd;
sei.lpParameters = _T("/quiet");
sei.lpVerb = _T("runas");
sei.nShow = SW_SHOW;
return ShellExecuteEx(&sei);
}