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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
**
**************************************************************************/
//
// WinANSI - An ANSI implementation for the modern Windows
//
// Copyright (C) 2008- Marius Storm-Olsen <mstormo@gmail.com>
//
// Based on work by Robert Kuster in article
// http://software.rkuster.com/articles/winspy.htm
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// -------------------------------------------------------------------------------------------------
#include "sharedlibraryinjector.h"
#include <utils/winutils.h>
#include <QtCore/QDebug>
#ifdef __GNUC__ // MinGW does not have a complete windows.h
typedef DWORD (__stdcall *PTHREAD_START_ROUTINE) (LPVOID lpThreadParameter);
#endif
enum { debug = 0 };
static QString msgFuncFailed(const char *f, unsigned long error)
{
return QString::fromLatin1("%1 failed: %2").arg(QLatin1String(f), Core::Utils::winErrorMessage(error));
}
// Resolve a symbol from a library handle
template <class SymbolType>
inline bool resolveSymbol(const char *libraryName, HMODULE libraryHandle, const char *symbolName, SymbolType *s, QString *errorMessage)
{
*s = 0;
FARPROC WINAPI vs = ::GetProcAddress(libraryHandle, symbolName);
if (vs == 0) {
*errorMessage = QString::fromLatin1("Unable to resolve '%2' in '%1'.").arg(QString::fromAscii(symbolName), QString::fromAscii(libraryName));
return false;
}
*s = reinterpret_cast<SymbolType>(vs);
return true;
}
// Resolve a symbol from a library
template <class SymbolType>
inline bool resolveSymbol(const char *library, const char *symbolName, SymbolType *s, QString *errorMessage)
{
*s = 0;
const HMODULE hm = ::GetModuleHandleA(library);
if (hm == NULL) {
*errorMessage = QString::fromLatin1("Module '%1' does not exist.").arg(QString::fromAscii(library));
return false;
}
return resolveSymbol(library, hm , symbolName, s, errorMessage);
}
namespace Debugger {
namespace Internal {
SharedLibraryInjector::SharedLibraryInjector(unsigned long processId,
unsigned long threadId) :
m_processId(processId),
m_threadId(threadId),
m_hasEscalatedPrivileges(false)
{
}
SharedLibraryInjector::~SharedLibraryInjector()
{
}
void SharedLibraryInjector::setPid(unsigned long pid)
{
m_processId = pid;
}
void SharedLibraryInjector::setThreadId(unsigned long tid)
{
m_threadId = tid;
}
void SharedLibraryInjector::setModulePath(const QString &modulePath)
{
m_modulePath = modulePath;
}
bool SharedLibraryInjector::remoteInject(const QString &modulePath,
bool waitForThread, QString *errorMessage)
{
setModulePath(modulePath);
return doRemoteInjection(m_processId, NULL, m_modulePath, waitForThread, errorMessage);
}
bool SharedLibraryInjector::stubInject(const QString &modulePath, unsigned long entryPoint, QString *errorMessage)
{
setModulePath(modulePath);
return doStubInjection(m_processId, m_modulePath, entryPoint, errorMessage);
}
bool SharedLibraryInjector::unload(HMODULE hFreeModule, QString *errorMessage)
{
return doRemoteInjection(m_processId, hFreeModule, QString(), true, errorMessage); // Always use remote thread to unload
}
bool SharedLibraryInjector::unload(const QString &modulePath, QString *errorMessage)
{
const HMODULE hMod = modulePath.isEmpty() ?
findModuleHandle(m_modulePath, errorMessage) :
findModuleHandle(modulePath, errorMessage);
if (!hMod)
return false;
return doRemoteInjection(m_processId, hMod, NULL, true, errorMessage); // Always use remote thread to unload
}
bool SharedLibraryInjector::hasLoaded(const QString &modulePath)
{
QString errorMessage;
return findModuleHandle(modulePath.isEmpty() ? m_modulePath : modulePath, &errorMessage) != NULL;
}
QString SharedLibraryInjector::findModule(const QString &moduleName)
{
const TCHAR *moduleNameC = reinterpret_cast<const TCHAR*>(moduleName.utf16());
if (GetFileAttributesW(moduleNameC) != INVALID_FILE_ATTRIBUTES)
return moduleName;
TCHAR testpathC[MAX_PATH];
// Check application path first
GetModuleFileNameW(NULL, testpathC, MAX_PATH);
QString testPath = QString::fromUtf16(reinterpret_cast<unsigned short*>(testpathC));
const int lastSlash = testPath.lastIndexOf(QLatin1Char('\\'));
if (lastSlash != -1)
testPath.truncate(lastSlash + 1);
testPath += moduleName;
if (GetFileAttributesW(reinterpret_cast<const TCHAR*>(testPath.utf16())) != INVALID_FILE_ATTRIBUTES)
return testPath;
// Path Search
if (SearchPathW(NULL, reinterpret_cast<const TCHAR*>(moduleName.utf16()), NULL, sizeof(testpathC)/2, testpathC, NULL))
return QString::fromUtf16(reinterpret_cast<unsigned short*>(testpathC));
// Last chance, if the module has already been loaded in this process, then use that path
const HMODULE loadedModule = GetModuleHandleW(reinterpret_cast<const TCHAR*>(moduleName.utf16()));
if (loadedModule) {
GetModuleFileNameW(loadedModule, testpathC, sizeof(testpathC));
if (GetFileAttributes(testpathC) != INVALID_FILE_ATTRIBUTES)
return QString::fromUtf16(reinterpret_cast<unsigned short*>(testpathC));
}
return QString();
}
unsigned long SharedLibraryInjector::getModuleEntryPoint(const QString &moduleName)
{
// If file doesn't exist, just treat it like we cannot figure out the entry point
if (moduleName.isEmpty() || GetFileAttributesW(reinterpret_cast<const TCHAR*>(moduleName.utf16())) == INVALID_FILE_ATTRIBUTES)
return 0;
// Read the first 1K of data from the file
unsigned char peData[1024];
unsigned long peDataSize = 0;
const HANDLE hFile = CreateFileW(reinterpret_cast<const WCHAR*>(moduleName.utf16()), FILE_READ_DATA, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if (hFile == INVALID_HANDLE_VALUE
|| !ReadFile(hFile, peData, sizeof(peData), &peDataSize, NULL))
return 0;
CloseHandle(hFile);
// Now we check to see if there is an optional header we can read
IMAGE_DOS_HEADER *dosHeader = reinterpret_cast<IMAGE_DOS_HEADER *>(peData);
if (dosHeader->e_magic != IMAGE_DOS_SIGNATURE // DOS signature is incorrect, or
|| dosHeader->e_lfanew == 0) // executable's PE data contains no offset to New EXE header
return 0;
IMAGE_NT_HEADERS *ntHeaders = (IMAGE_NT_HEADERS *)(peData + dosHeader->e_lfanew);
if (ntHeaders->Signature != IMAGE_NT_SIGNATURE // NT signature is incorrect, or
|| !ntHeaders->OptionalHeader.ImageBase // ImageBase or EntryPoint addresses are incorrect
|| !ntHeaders->OptionalHeader.AddressOfEntryPoint)
return 0;
return ntHeaders->OptionalHeader.ImageBase
+ ntHeaders->OptionalHeader.AddressOfEntryPoint;
}
bool SharedLibraryInjector::escalatePrivileges(QString *errorMessage)
{
if (debug)
qDebug() << Q_FUNC_INFO << m_hasEscalatedPrivileges;
if (m_hasEscalatedPrivileges)
return true;
bool success = false;
HANDLE hToken = 0;
do {
TOKEN_PRIVILEGES Debug_Privileges;
if (!LookupPrivilegeValue (NULL, SE_DEBUG_NAME, &Debug_Privileges.Privileges[0].Luid)) {
*errorMessage = msgFuncFailed("LookupPrivilegeValue", GetLastError());
break;
}
Debug_Privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; // set to enable privilege
Debug_Privileges.PrivilegeCount = 1; // working with only 1
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken)) {
*errorMessage = msgFuncFailed("OpenProcessToken", GetLastError());
break;
}
if (!AdjustTokenPrivileges(hToken, FALSE, &Debug_Privileges, 0, NULL, NULL)) {
*errorMessage = msgFuncFailed("AdjustTokenPrivileges", GetLastError());
break;
}
success = true;
} while (false);
if (hToken)
CloseHandle (hToken);
m_hasEscalatedPrivileges = success;
return success;
}
static void *writeDataToProcess(HANDLE process, void *data, unsigned size, QString *errorMessage)
{
void *memory = VirtualAllocEx(process, NULL, size, MEM_COMMIT, PAGE_READWRITE);
if (!memory) {
*errorMessage = msgFuncFailed("VirtualAllocEx", GetLastError());
return 0;
}
if (!WriteProcessMemory(process, memory, data, size, NULL)) {
*errorMessage = msgFuncFailed("WriteProcessMemory", GetLastError());
return 0;
}
return memory;
}
static void *writeUtf16StringToProcess(HANDLE process, const QString &what, QString *errorMessage)
{
QByteArray whatData = QByteArray(reinterpret_cast<const char*>(what.utf16()), what.size() * 2);
whatData += '\0';
whatData += '\0';
return writeDataToProcess(process, whatData.data(), whatData.size(), errorMessage);
}
bool SharedLibraryInjector::doStubInjection(unsigned long pid,
const QString &modulePath,
unsigned long entryPoint,
QString *errorMessage)
{
if (debug)
qDebug() << pid << modulePath << entryPoint;
if (modulePath.isEmpty())
return false;
if (!escalatePrivileges(errorMessage))
return false;
// MinGW lacks OpenThread() and the advapi.lib as of 6.5.2009
#if (defined(WIN64) || defined(_WIN64) || defined(__WIN64__)) || defined(__GNUC__)
*errorMessage = QLatin1String("Not implemented for this architecture.");
return false;
#else
byte stubCode[] = {
0x68, 0, 0, 0, 0, // push 0x00000000 - Placeholder for the entrypoint address
0x9C, // pushfd - Save the flags and registers
0x60, // pushad
0x68, 0, 0, 0, 0, // push 0x00000000 - Placeholder for the string address
0xB8, 0, 0, 0, 0, // mov eax, 0x00000000 - Placeholder for the LoadLibrary address
0xFF, 0xD0, // call eax - Call LoadLibrary with string address
0x61, // popad - Restore flags and registry
0x9D, // popfd
0xC3 // retn - Return (pops the entrypoint, and executes)
};
const HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
if (!hProcess)
return false;
const HANDLE hThread = OpenThread(THREAD_GET_CONTEXT | THREAD_SET_CONTEXT, false, m_threadId);
if (!hThread) {
CloseHandle(hProcess);
return false;
}
// Get address of LoadLibraryW in kernel32.dll
unsigned long funcPtr;
if (!resolveSymbol("kernel32.dll", "LoadLibraryW", &funcPtr, errorMessage))
return false;
// Allocate and write DLL path to target process' memory
// 0-terminated Utf16 string.
void *dllString = writeUtf16StringToProcess(hProcess, modulePath, errorMessage);
if (!dllString)
return false;
// Allocate memory in target process, for the stubCode which will load the module, and execute
// the process' entry-point
const unsigned long stubLen = sizeof(stubCode);
// Modify the stubCode to have the proper entry-point, DLL module string, and function pointer
*(unsigned long*)(stubCode+1) = entryPoint;
*(unsigned long*)(stubCode+8) = reinterpret_cast<unsigned long>(dllString);
*(unsigned long*)(stubCode+13) = funcPtr;
// If we cannot write the stubCode into the process, we simply bail out, and the process will
// continues execution as normal
void *stub = writeDataToProcess(hProcess, stubCode, stubLen, errorMessage);
if (!stub)
return false;
// Set the process' main thread to start executing from the stubCode address which we've just
// allocated in the process' memory.. If we cannot do that, bail out
CONTEXT ctx;
ctx.ContextFlags = CONTEXT_CONTROL;
if(!GetThreadContext(hThread, &ctx))
return false;
ctx.Eip = reinterpret_cast<DWORD>(stub);
ctx.ContextFlags = CONTEXT_CONTROL;
if(!SetThreadContext(hThread, &ctx))
return false;
CloseHandle(hProcess);
CloseHandle(hThread);
return true;
#endif
}
// -------------------------------------------------------------------------------------------------
bool SharedLibraryInjector::doRemoteInjection(unsigned long pid,
HMODULE hFreeModule,
const QString &modulePath,
bool waitForThread,
QString *errorMessage)
{
if (debug)
qDebug() << Q_FUNC_INFO << '\n' << hFreeModule << pid << waitForThread<< modulePath;
if (!hFreeModule && modulePath.isEmpty())
return false;
escalatePrivileges(errorMessage);
const HANDLE hProcess = ::OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
if (hProcess == NULL) {
*errorMessage = msgFuncFailed("OpenProcess", GetLastError());
qDebug() << "Failed to open process PID %d with all access\n" << pid;
return false;
}
void *pszLibFileRemote = 0;
HANDLE hThread = 0;
// Call "FreeLibrary(hFreeModule)" to unload
if (hFreeModule) {
PTHREAD_START_ROUTINE pfnThreadRtn;
if (!resolveSymbol("Kernel32", "FreeLibrary", &pfnThreadRtn, errorMessage))
return false;
hThread = ::CreateRemoteThread(hProcess, NULL, 0, pfnThreadRtn, hFreeModule, 0, NULL);
} else {
pszLibFileRemote = writeUtf16StringToProcess(hProcess, modulePath, errorMessage);
if (!pszLibFileRemote)
return false;
// Loadlibrary routine
PTHREAD_START_ROUTINE pfnThreadRtn;
if (!resolveSymbol("Kernel32", "LoadLibraryW", &pfnThreadRtn, errorMessage))
return false;
hThread = ::CreateRemoteThread(hProcess, NULL, 0, pfnThreadRtn, pszLibFileRemote, 0, NULL);
}
if (hThread == NULL) {
*errorMessage = msgFuncFailed("CreateRemoteThread", GetLastError());
return false;
}
if (!SetThreadPriority(hThread, THREAD_PRIORITY_HIGHEST)) {
*errorMessage = msgFuncFailed("SetThreadPriority", GetLastError());
return false;
}
if (waitForThread) {
if (::WaitForSingleObject(hThread, 20000) != WAIT_OBJECT_0) {
*errorMessage = QString::fromLatin1("WaitForSingleObject timeout");
::CloseHandle(hThread);
::CloseHandle(hProcess);
return false;
}
if (pszLibFileRemote)
::VirtualFreeEx(hProcess, pszLibFileRemote, 0, MEM_RELEASE);
}
if (hThread)
::CloseHandle(hThread);
if (hProcess)
::CloseHandle(hProcess);
if (debug)
qDebug() << "success" << Q_FUNC_INFO;
return true;
}
typedef BOOL (WINAPI *PFNENUMPROCESSMODULES) (HANDLE hProcess, HMODULE *lphModule, DWORD cb, LPDWORD lpcbNeeded);
typedef DWORD (WINAPI *PFNGETMODULEFILENAMEEXW) (HANDLE hProcess, HMODULE hModule, LPTSTR lpFilename, DWORD nSize);
// We will require this function to get a module handle of our original module
HMODULE SharedLibraryInjector::findModuleHandle(const QString &modulePath, QString *errorMessage)
{
if (debug)
qDebug() << Q_FUNC_INFO << modulePath;
if (!escalatePrivileges(errorMessage))
return 0;
HMODULE hMods[1024];
DWORD cbNeeded;
HANDLE hProcess = ::OpenProcess(PROCESS_ALL_ACCESS, FALSE, m_processId);
if (hProcess == NULL)
return 0;
const char *psAPI_Lib = "PSAPI.DLL";
HMODULE m_hModPSAPI = ::LoadLibraryA(psAPI_Lib);
PFNENUMPROCESSMODULES m_pfnEnumProcessModules;
PFNGETMODULEFILENAMEEXW m_pfnGetModuleFileNameExW;
if (!resolveSymbol(psAPI_Lib, m_hModPSAPI, "EnumProcessModules", &m_pfnEnumProcessModules, errorMessage)
|| !resolveSymbol(psAPI_Lib, m_hModPSAPI, "GetModuleFileNameExW", &m_pfnGetModuleFileNameExW, errorMessage))
return false;
if(m_pfnEnumProcessModules(hProcess, hMods, sizeof(hMods), &cbNeeded)) {
const unsigned count = cbNeeded / sizeof(HMODULE);
for (unsigned i = 0; i < count; i++) {
TCHAR szModName[MAX_PATH];
if (m_pfnGetModuleFileNameExW(hProcess, hMods[i], szModName, sizeof(szModName))) {
if (QString::fromUtf16(reinterpret_cast<const unsigned short *>(szModName)) == modulePath) {
::FreeLibrary(m_hModPSAPI);
::CloseHandle(hProcess);
return hMods[i];
}
}
}
}
::CloseHandle(hProcess);
return 0;
}
} // namespace Internal
} // namespace Debugger
|