mirror of
https://github.com/mumble-voip/mumble.git
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209 lines
5.3 KiB
C++
209 lines
5.3 KiB
C++
/* Copyright (C) 2009-2010, Snares <snares@users.sourceforge.net>
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Copyright (C) 2005-2010, Thorvald Natvig <thorvald@natvig.com>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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- Neither the name of the Mumble Developers nor the names of its
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contributors may be used to endorse or promote products derived from this
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software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <tlhelp32.h>
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#include <math.h>
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#include "../mumble_plugin.h"
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HANDLE h;
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BYTE *faceptr;
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BYTE *topptr;
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//BYTE *stateptr;
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//BYTE *contextptr;
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static DWORD getProcess(const wchar_t *exename) {
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PROCESSENTRY32 pe;
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DWORD pid = 0;
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pe.dwSize = sizeof(pe);
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HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
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if (hSnap != INVALID_HANDLE_VALUE) {
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BOOL ok = Process32First(hSnap, &pe);
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while (ok) {
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if (wcscmp(pe.szExeFile, exename)==0) {
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pid = pe.th32ProcessID;
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break;
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}
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ok = Process32Next(hSnap, &pe);
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}
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CloseHandle(hSnap);
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}
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return pid;
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}
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static BYTE *getModuleAddr(DWORD pid, const wchar_t *modname) {
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MODULEENTRY32 me;
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BYTE *addr = NULL;
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me.dwSize = sizeof(me);
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HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid);
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if (hSnap != INVALID_HANDLE_VALUE) {
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BOOL ok = Module32First(hSnap, &me);
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while (ok) {
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if (wcscmp(me.szModule, modname)==0) {
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addr = me.modBaseAddr;
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break;
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}
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ok = Module32Next(hSnap, &me);
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}
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CloseHandle(hSnap);
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}
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return addr;
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}
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static bool peekProc(VOID *base, VOID *dest, SIZE_T len) {
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SIZE_T r;
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BOOL ok=ReadProcessMemory(h, base, dest, len, &r);
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return (ok && (r == len));
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}
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static DWORD peekProc(VOID *base) {
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DWORD v = 0;
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peekProc(base, reinterpret_cast<BYTE *>(&v), sizeof(DWORD));
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return v;
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}
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static BYTE *peekProcPtr(VOID *base) {
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DWORD v = peekProc(base);
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return reinterpret_cast<BYTE *>(v);
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}
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static void about(HWND h) {
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::MessageBox(h, L"Reads audio position information from Battlefield 1942 v1.61b.", L"Mumble BF2 Plugin", MB_OK);
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}
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static int fetch(float *avatar_pos, float *avatar_front, float *avatar_top, float *camera_pos, float *camera_front, float *camera_top, std::string &context, std::wstring &identity) {
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for (int i=0;i<3;i++)
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avatar_pos[i] = avatar_front[i] = avatar_top[i] = camera_pos[i] = camera_front[i] = camera_top[i] = 0.0f;
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//char ccontext[128];
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//char state;
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//char spawn;
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bool ok;
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//ok = peekProc(stateptr, &state, 1); // Magical state value
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//if (! ok)
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// return false;
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//if (state == 0)
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// return false;
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//peekProc(contextptr, ccontext, 128);
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ok = peekProc((BYTE *) 0x00976274, avatar_pos, 12) &&
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peekProc(faceptr, avatar_front, 12) &&
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peekProc(topptr, avatar_top, 12);
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if (! ok)
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return false;
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/*
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Get context string; in this plugin this will be an
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ip:port (char 256 bytes) string
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*/
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//ccontext[127] = 0;
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//context = std::string(ccontext);
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for (int i=0;i<3;i++) {
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camera_pos[i] = avatar_pos[i];
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camera_front[i] = avatar_front[i];
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camera_top[i] = avatar_top[i];
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}
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return ok;
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}
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static int trylock() {
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h = NULL;
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faceptr = topptr = NULL;
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DWORD pid=getProcess(L"BF1942.exe");
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if (!pid)
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return false;
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h=OpenProcess(PROCESS_VM_READ, false, pid);
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if (!h)
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return false;
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BYTE *ptr1 = peekProcPtr((BYTE *) 0x009A9468);
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BYTE *ptr2 = peekProcPtr(ptr1 + 0x98);
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faceptr = ptr2 + 0x5C;
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topptr = ptr2 + 0x4C;
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float apos[3], afront[3], atop[3], cpos[3], cfront[3], ctop[3];
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std::string context;
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std::wstring identity;
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if (fetch(apos, afront, atop, cpos, cfront, ctop, context, identity))
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return true;
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CloseHandle(h);
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h = NULL;
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return false;
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}
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static void unlock() {
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if (h) {
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CloseHandle(h);
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h = NULL;
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}
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return;
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}
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static const std::wstring longdesc() {
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return std::wstring(L"Supports Battlefield 1942 v1.61b. No identity or context support yet.");
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}
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static std::wstring description(L"Battlefield 1942 v1.61b");
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static std::wstring shortname(L"Battlefield 1942");
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static MumblePlugin bf1942plug = {
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MUMBLE_PLUGIN_MAGIC,
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description,
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shortname,
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about,
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NULL,
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trylock,
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unlock,
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longdesc,
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fetch
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};
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extern "C" __declspec(dllexport) MumblePlugin *getMumblePlugin() {
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return &bf1942plug;
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}
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