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dll: FspAccessCheckEx: test access checks without traverse privilege

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This commit is contained in:
Bill Zissimopoulos
2016-10-19 11:54:22 -07:00
parent cb17b7e2e0
commit f642ea57be
9 changed files with 71 additions and 18 deletions
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33
tst/winfsp-tests/winfsp-tests.c
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@ -10,6 +10,8 @@ int WinFspNetTests = 1;
BOOLEAN OptCaseInsensitive = FALSE;
BOOLEAN OptCaseRandomize = FALSE;
WCHAR OptMountPointBuf[MAX_PATH], *OptMountPoint;
HANDLE OptNoTraverseToken = 0;
LUID OptNoTraverseLuid;
int mywcscmp(PWSTR a, int alen, PWSTR b, int blen)
{
@ -63,6 +65,7 @@ HANDLE HookCreateFileW(
L"\\\\memfs\\share";
static const TogglePercent = 25;
WCHAR FileNameBuf[1024];
TOKEN_PRIVILEGES Privileges;
PWSTR P, EndP;
size_t L1, L2;
@ -119,6 +122,15 @@ HANDLE HookCreateFileW(
abort();
}
if (OptNoTraverseToken)
{
Privileges.PrivilegeCount = 1;
Privileges.Privileges[0].Attributes = 0;
Privileges.Privileges[0].Luid = OptNoTraverseLuid;
if (!AdjustTokenPrivileges(OptNoTraverseToken, FALSE, &Privileges, 0, 0, 0))
abort();
}
HANDLE h = CreateFileW(
FileNameBuf,
dwDesiredAccess,
@ -127,9 +139,18 @@ HANDLE HookCreateFileW(
dwCreationDisposition,
dwFlagsAndAttributes,
hTemplateFile);
DWORD LastError = GetLastError();
if (OptNoTraverseToken)
{
Privileges.PrivilegeCount = 1;
Privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Privileges.Privileges[0].Luid = OptNoTraverseLuid;
if (!AdjustTokenPrivileges(OptNoTraverseToken, FALSE, &Privileges, 0, 0, 0))
abort();
}
#if 0
DWORD LastError = GetLastError();
FspDebugLog("CreateFileW(\"%S\", %#lx, %#lx, %p, %#lx, %#lx, %p) = %p[%#lx]\n",
FileNameBuf,
dwDesiredAccess,
@ -139,9 +160,9 @@ HANDLE HookCreateFileW(
dwFlagsAndAttributes,
hTemplateFile,
h, INVALID_HANDLE_VALUE != h ? 0 : LastError);
SetLastError(LastError);
#endif
SetLastError(LastError);
return h;
}
@ -200,6 +221,14 @@ int main(int argc, char *argv[])
WinFspNetTests = 0;
}
}
else if (0 == strcmp("--no-traverse", a))
{
if (LookupPrivilegeValue(0, SE_CHANGE_NOTIFY_NAME, &OptNoTraverseLuid) &&
OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &OptNoTraverseToken))
{
rmarg(argv, argc, argi);
}
}
}
}