1 files changed, 102 insertions, 0 deletions
diff --git a/sandbox/sandbox_poc/pocdll/processes_and_threads.cc b/sandbox/sandbox_poc/pocdll/processes_and_threads.cc
new file mode 100644
index 0000000..1bef005
--- /dev/null
+++ b/sandbox/sandbox_poc/pocdll/processes_and_threads.cc
@@ -0,0 +1,102 @@
+// 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/sandbox_poc/pocdll/exports.h"
+#include "sandbox/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);
+}