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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <windows.h>
#include <Tlhelp32.h>
#include "sandbox/win/sandbox_poc/pocdll/exports.h"
#include "sandbox/win/sandbox_poc/pocdll/utils.h"
// This file contains the tests used to verify the security of threads and
// processes.
void POCDLL_API TestProcesses(HANDLE log) {
HandleToFile handle2file;
FILE *output = handle2file.Translate(log, "w");
HANDLE snapshot = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
if (INVALID_HANDLE_VALUE == snapshot) {
fprintf(output, "[BLOCKED] Cannot list all processes on the system. "
"Error %d\r\n", ::GetLastError());
return;
}
PROCESSENTRY32 process_entry = {0};
process_entry.dwSize = sizeof(PROCESSENTRY32);
BOOL result = ::Process32First(snapshot, &process_entry);
while (result) {
HANDLE process = ::OpenProcess(PROCESS_VM_READ,
FALSE, // Do not inherit handle.
process_entry.th32ProcessID);
if (NULL == process) {
fprintf(output, "[BLOCKED] Found process %S:%d but cannot open it. "
"Error %d\r\n",
process_entry.szExeFile,
process_entry.th32ProcessID,
::GetLastError());
} else {
fprintf(output, "[GRANTED] Found process %S:%d and open succeeded.\r\n",
process_entry.szExeFile, process_entry.th32ProcessID);
::CloseHandle(process);
}
result = ::Process32Next(snapshot, &process_entry);
}
DWORD err_code = ::GetLastError();
if (ERROR_NO_MORE_FILES != err_code) {
fprintf(output, "[ERROR] Error %d while looking at the processes on "
"the system\r\n", err_code);
}
::CloseHandle(snapshot);
}
void POCDLL_API TestThreads(HANDLE log) {
HandleToFile handle2file;
FILE *output = handle2file.Translate(log, "w");
HANDLE snapshot = ::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, NULL);
if (INVALID_HANDLE_VALUE == snapshot) {
fprintf(output, "[BLOCKED] Cannot list all threads on the system. "
"Error %d\r\n", ::GetLastError());
return;
}
THREADENTRY32 thread_entry = {0};
thread_entry.dwSize = sizeof(THREADENTRY32);
BOOL result = ::Thread32First(snapshot, &thread_entry);
int nb_success = 0;
int nb_failure = 0;
while (result) {
HANDLE thread = ::OpenThread(THREAD_QUERY_INFORMATION,
FALSE, // Do not inherit handles.
thread_entry.th32ThreadID);
if (NULL == thread) {
nb_failure++;
} else {
nb_success++;
fprintf(output, "[GRANTED] Found thread %d:%d and able to open it.\r\n",
thread_entry.th32OwnerProcessID,
thread_entry.th32ThreadID);
::CloseHandle(thread);
}
result = Thread32Next(snapshot, &thread_entry);
}
DWORD err_code = ::GetLastError();
if (ERROR_NO_MORE_FILES != err_code) {
fprintf(output, "[ERROR] Error %d while looking at the processes on "
"the system\r\n", err_code);
}
fprintf(output, "[INFO] Found %d threads. Able to open %d of them\r\n",
nb_success + nb_failure, nb_success);
::CloseHandle(snapshot);
}
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