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// Copyright 2005-2017 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_PLUGIN_WIN32_PTR_TYPE_H_
#define MUMBLE_MUMBLE_PLUGIN_WIN32_PTR_TYPE_H_
#ifndef PTR_TYPE_CONCRETE
# define PTR_TYPE_CONCRETE PTR_TYPE
#endif
#define _USE_MATH_DEFINES
#include <stdio.h>
#include <stdlib.h>
#define NOMINMAX
#include <windows.h>
#include <tlhelp32.h>
#include <math.h>
#include <sstream>
#include <iostream>
#include <stdint.h>
#include "mumble_plugin.h"
DWORD dwPid;
static HANDLE hProcess;
static PTR_TYPE_CONCRETE pModule;
static inline DWORD getProcess(const wchar_t *exename) {
PROCESSENTRY32 pe;
DWORD pid = 0;
pe.dwSize = sizeof(pe);
HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (hSnap != INVALID_HANDLE_VALUE) {
BOOL ok = Process32First(hSnap, &pe);
while (ok) {
if (wcscmp(pe.szExeFile, exename)==0) {
pid = pe.th32ProcessID;
break;
}
ok = Process32Next(hSnap, &pe);
}
CloseHandle(hSnap);
}
return pid;
}
static inline PTR_TYPE_CONCRETE getModuleAddr(DWORD pid, const wchar_t *modname) {
MODULEENTRY32 me;
PTR_TYPE_CONCRETE ret = 0;
me.dwSize = sizeof(me);
HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE|TH32CS_SNAPMODULE32, pid);
if (hSnap != INVALID_HANDLE_VALUE) {
BOOL ok = Module32First(hSnap, &me);
while (ok) {
if (wcscmp(me.szModule, modname)==0) {
uintptr_t addr = reinterpret_cast<uintptr_t>(me.modBaseAddr);
ret = static_cast<PTR_TYPE_CONCRETE>(addr);
break;
}
ok = Module32Next(hSnap, &me);
}
CloseHandle(hSnap);
}
return ret;
}
static inline PTR_TYPE_CONCRETE getModuleAddr(const wchar_t *modname) {
return getModuleAddr(dwPid, modname);
}
static inline bool peekProc(PTR_TYPE base, VOID *dest, SIZE_T len) {
SIZE_T r;
uintptr_t addr = static_cast<uintptr_t>(base);
BOOL ok=ReadProcessMemory(hProcess, reinterpret_cast<VOID *>(addr), dest, len, &r);
return (ok && (r == len));
}
template<class T>
bool peekProc(PTR_TYPE base, T &dest) {
SIZE_T r;
uintptr_t addr = static_cast<uintptr_t>(base);
BOOL ok=ReadProcessMemory(hProcess, reinterpret_cast<VOID *>(addr), reinterpret_cast<VOID *>(& dest), sizeof(T), &r);
return (ok && (r == sizeof(T)));
}
template<class T>
T peekProc(PTR_TYPE base) {
T v = 0;
peekProc(base, reinterpret_cast<T *>(&v), sizeof(T));
return v;
}
static bool inline initialize(const std::multimap<std::wstring, unsigned long long int> &pids, const wchar_t *procname, const wchar_t *modname = NULL) {
hProcess = NULL;
pModule = 0;
if (! pids.empty()) {
std::multimap<std::wstring, unsigned long long int>::const_iterator iter = pids.find(std::wstring(procname));
if (iter != pids.end())
dwPid = static_cast<DWORD>(iter->second);
else
dwPid = 0;
} else {
dwPid=getProcess(procname);
}
if (!dwPid)
return false;
pModule=getModuleAddr(modname ? modname : procname);
if (!pModule) {
dwPid = 0;
return false;
}
hProcess=OpenProcess(PROCESS_VM_READ, false, dwPid);
if (!hProcess) {
dwPid = 0;
pModule = 0;
return false;
}
return true;
}
static void generic_unlock() {
if (hProcess) {
CloseHandle(hProcess);
hProcess = NULL;
pModule = 0;
dwPid = 0;
}
}
#endif
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