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launcher: new WorkDirectory registry value controls file system work dir

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This commit is contained in:
Bill Zissimopoulos
2017-12-19 17:50:26 -08:00
parent 299f371dee
commit e6d2ef9274
1 changed files with 37 additions and 6 deletions
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43
src/launcher/launcher.c
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@@ -646,10 +646,11 @@ static NTSTATUS SvcInstanceAccessCheck(HANDLE ClientToken, ULONG DesiredAccess,
}
NTSTATUS SvcInstanceCreateProcess(PWSTR UserName,
PWSTR Executable, PWSTR CommandLine,
PWSTR Executable, PWSTR CommandLine, PWSTR WorkDirectory,
HANDLE StdioHandles[2],
PPROCESS_INFORMATION ProcessInfo)
{
WCHAR WorkDirectoryBuf[MAX_PATH];
STARTUPINFOEXW StartupInfoEx;
HANDLE ChildHandles[3] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, 0/* DO NOT CLOSE!*/ };
HANDLE ParentHandles[2] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
@@ -657,6 +658,22 @@ NTSTATUS SvcInstanceCreateProcess(PWSTR UserName,
SIZE_T Size;
NTSTATUS Result;
if (0 != WorkDirectory && L'.' == WorkDirectory[0] && L'\0' == WorkDirectory[1])
{
PWSTR Backslash = 0, P;
if (0 == GetModuleFileNameW(0, WorkDirectoryBuf, MAX_PATH))
return FspNtStatusFromWin32(GetLastError());
for (P = WorkDirectoryBuf; *P; P++)
if (L'\\' == *P)
Backslash = P;
if (0 != Backslash && WorkDirectoryBuf < Backslash && L':' != Backslash[-1])
*Backslash = L'\0';
WorkDirectory = WorkDirectoryBuf;
}
memset(&StartupInfoEx, 0, sizeof StartupInfoEx);
StartupInfoEx.StartupInfo.cb = sizeof StartupInfoEx.StartupInfo;
@@ -725,7 +742,8 @@ NTSTATUS SvcInstanceCreateProcess(PWSTR UserName,
if (!LogonCreateProcess(UserName,
Executable, CommandLine, 0, 0, TRUE,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP | EXTENDED_STARTUPINFO_PRESENT, 0, 0,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP | EXTENDED_STARTUPINFO_PRESENT,
0, WorkDirectory,
&StartupInfoEx.StartupInfo, ProcessInfo))
{
if (ERROR_NO_SYSTEM_RESOURCES != GetLastError())
@@ -745,7 +763,8 @@ NTSTATUS SvcInstanceCreateProcess(PWSTR UserName,
StartupInfoEx.StartupInfo.cb = sizeof StartupInfoEx.StartupInfo;
if (!LogonCreateProcess(UserName,
Executable, CommandLine, 0, 0, TRUE,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP, 0, 0,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP,
0, WorkDirectory,
&StartupInfoEx.StartupInfo, ProcessInfo))
{
Result = FspNtStatusFromWin32(GetLastError());
@@ -757,7 +776,8 @@ NTSTATUS SvcInstanceCreateProcess(PWSTR UserName,
{
if (!LogonCreateProcess(UserName,
Executable, CommandLine, 0, 0, FALSE,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP, 0, 0,
CREATE_SUSPENDED | CREATE_NEW_PROCESS_GROUP,
0, WorkDirectory,
&StartupInfoEx.StartupInfo, ProcessInfo))
{
Result = FspNtStatusFromWin32(GetLastError());
@@ -800,7 +820,8 @@ NTSTATUS SvcInstanceCreate(HANDLE ClientToken,
HKEY RegKey = 0;
DWORD RegResult, RegSize;
DWORD ClassNameSize, InstanceNameSize;
WCHAR Executable[MAX_PATH], CommandLineBuf[512], SecurityBuf[512], RunAsBuf[256];
WCHAR Executable[MAX_PATH], CommandLineBuf[512], WorkDirectory[MAX_PATH],
SecurityBuf[512], RunAsBuf[64];
PWSTR CommandLine, Security;
DWORD JobControl, Credentials;
PSECURITY_DESCRIPTOR SecurityDescriptor = 0, NewSecurityDescriptor;
@@ -877,6 +898,16 @@ NTSTATUS SvcInstanceCreate(HANDLE ClientToken,
CommandLine[-1] = L'\0';
CommandLine = CommandLineBuf;
RegSize = sizeof WorkDirectory;
WorkDirectory[0] = L'\0';
RegResult = RegGetValueW(RegKey, ClassName, L"WorkDirectory", RRF_RT_REG_SZ, 0,
WorkDirectory, &RegSize);
if (ERROR_SUCCESS != RegResult && ERROR_FILE_NOT_FOUND != RegResult)
{
Result = FspNtStatusFromWin32(RegResult);
goto exit;
}
Security = SecurityBuf + lstrlenW(SecurityBuf);
RegSize = (DWORD)(sizeof SecurityBuf - (Security - SecurityBuf) * sizeof(WCHAR));
RegResult = RegGetValueW(RegKey, ClassName, L"Security", RRF_RT_REG_SZ, 0,
@@ -961,7 +992,7 @@ NTSTATUS SvcInstanceCreate(HANDLE ClientToken,
goto exit;
Result = SvcInstanceCreateProcess(L'\0' != RunAsBuf[0] ? RunAsBuf : 0,
Executable, SvcInstance->CommandLine,
Executable, SvcInstance->CommandLine, L'\0' != WorkDirectory[0] ? WorkDirectory : 0,
RedirectStdio ? SvcInstance->StdioHandles : 0, &ProcessInfo);
if (!NT_SUCCESS(Result))
goto exit;