279 lines
7.4 KiB
C++
279 lines
7.4 KiB
C++
// pipe.cc
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// 8/24/2013 jichi
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// Branch IHF/pipe.cpp, rev 93
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// 8/24/2013 TODO: Clean up this file
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#include "host_p.h"
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#include "hookman.h"
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#include "vnrhook/include/defs.h"
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#include "vnrhook/include/const.h"
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#include "ithsys/ithsys.h"
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#include <stdio.h>
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//#include "CommandQueue.h"
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//#include <QtCore/QDebug>
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#define DEBUG "vnrhost/pipe.cc"
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#include "sakurakit/skdebug.h"
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//DWORD WINAPI UpdateWindows(LPVOID lpThreadParameter);
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namespace { // unnamed
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enum NamedPipeCommand {
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NAMED_PIPE_DISCONNECT = 1
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, NAMED_PIPE_CONNECT = 2
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};
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bool newline = false;
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bool detach = false;
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// jichi 10/27/2013
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// Check if text has leading space
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enum { _filter_limit = 0x20 }; // The same as the orignal ITH filter. So, I don't have to check \u3000
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//enum { _filter_limit = 0x19 };
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inline bool has_leading_space(const BYTE *text, int len)
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{
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return len == 1 ? *text <= _filter_limit : // 1 byte
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*reinterpret_cast<const WORD *>(text) <= _filter_limit; // 2 bytes
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}
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// jichi 9/28/2013: Skip leading garbage
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// Note:
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// - Modifying limit will break manual translation. The orignal one is 0x20
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// - Eliminating 0x20 will break English-translated games
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const BYTE *Filter(const BYTE *str, int len)
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{
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#ifdef ITH_DISABLE_FILTER // jichi 9/28/2013: only for debugging purpose
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return str;
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#endif // ITH_DISABLE_FILTER
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// if (len && *str == 0x10) // jichi 9/28/2013: garbage on wine, data link escape, or ^P
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// return nullptr;
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//enum { limit = 0x19 };
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while (true)
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if (len >= 2) {
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if (*(const WORD *)str <= _filter_limit) { // jichi 10/27/2013: two bytes
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str += 2;
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len -= 2;
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} else
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break;
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} else if (*str <= _filter_limit) { // jichi 10/27/2013: 1 byte
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str++;
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len--;
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} else
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break;
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return str;
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}
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} // unnamed namespace
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//WCHAR recv_pipe[] = L"\\??\\pipe\\ITH_PIPE";
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//WCHAR command_pipe[] = L"\\??\\pipe\\ITH_COMMAND";
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wchar_t recv_pipe[] = ITH_TEXT_PIPE;
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wchar_t command_pipe[] = ITH_COMMAND_PIPE;
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CRITICAL_SECTION detachCs; // jichi 9/27/2013: also used in main
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//HANDLE hDetachEvent;
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extern HANDLE pipeExistsEvent;
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void CreateNewPipe()
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{
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HANDLE hTextPipe, hCmdPipe, hThread;
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hTextPipe = CreateNamedPipeW(ITH_TEXT_PIPE, PIPE_ACCESS_INBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, 0x1000, 0x1000, MAXDWORD, NULL);
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hCmdPipe = CreateNamedPipeW(ITH_COMMAND_PIPE, PIPE_ACCESS_OUTBOUND, 0, PIPE_UNLIMITED_INSTANCES, 0x1000, 0x1000, MAXDWORD, NULL);
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hThread = CreateThread(nullptr, 0, RecvThread, hTextPipe, 0, nullptr);
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man->RegisterPipe(hTextPipe, hCmdPipe, hThread);
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}
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void DetachFromProcess(DWORD pid)
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{
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HANDLE hMutex = INVALID_HANDLE_VALUE,
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hEvent = INVALID_HANDLE_VALUE;
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//try {
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IO_STATUS_BLOCK ios;
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ProcessRecord *pr = man->GetProcessRecord(pid);
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if (!pr)
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return;
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//IthBreak();
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hEvent = IthCreateEvent(nullptr);
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if (STATUS_PENDING == NtFsControlFile(
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man->GetCmdHandleByPID(pid),
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hEvent,
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0,0,
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&ios,
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CTL_CODE(FILE_DEVICE_NAMED_PIPE, NAMED_PIPE_DISCONNECT, 0, 0),
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0,0,0,0))
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NtWaitForSingleObject(hEvent, 0, 0);
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NtClose(hEvent);
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//hEvent = INVALID_HANDLE_VALUE;
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WCHAR mutex[0x20];
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swprintf(mutex, ITH_DETACH_MUTEX_ L"%d", pid);
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hMutex = IthOpenMutex(mutex);
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if (hMutex != INVALID_HANDLE_VALUE) {
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NtWaitForSingleObject(hMutex, 0, 0);
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NtReleaseMutant(hMutex, 0);
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NtClose(hMutex);
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//hMutex = INVALID_HANDLE_VALUE;
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}
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//} catch (...) {
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// if (hEvent != INVALID_HANDLE_VALUE)
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// NtClose(hEvent);
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// else if (hMutex != INVALID_HANDLE_VALUE) {
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// NtWaitForSingleObject(hMutex, 0, 0);
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// NtReleaseMutant(hMutex, 0);
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// NtClose(hMutex);
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// }
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//}
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//NtSetEvent(hDetachEvent, 0);
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if (::running)
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NtSetEvent(pipeExistsEvent, 0);
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}
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// jichi 9/27/2013: I don't need this
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//void OutputDWORD(DWORD d)
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//{
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// WCHAR str[0x20];
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// swprintf(str, L"%.8X", d);
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// ConsoleOutput(str);
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//}
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DWORD WINAPI RecvThread(LPVOID lpThreadParameter)
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{
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HANDLE hTextPipe = (HANDLE)lpThreadParameter;
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IO_STATUS_BLOCK ios;
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NtFsControlFile(hTextPipe,
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0, 0, 0,
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&ios,
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CTL_CODE(FILE_DEVICE_NAMED_PIPE, NAMED_PIPE_CONNECT, 0, 0),
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0, 0, 0, 0);
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if (!::running) {
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NtClose(hTextPipe);
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return 0;
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}
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BYTE *buff;
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enum { PipeBufferSize = 0x1000 };
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buff = new BYTE[PipeBufferSize];
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::memset(buff, 0, PipeBufferSize); // jichi 8/27/2013: zero memory, or it will crash wine on start up
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// 10/19/2014 jichi: there are totally three words received
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// See: hook/rpc/pipe.cc
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// struct {
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// DWORD pid;
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// TextHook *man;
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// DWORD module;
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// //DWORD engine;
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// } u;
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enum { module_struct_size = 12 };
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NtReadFile(hTextPipe, 0, 0, 0, &ios, buff, module_struct_size, 0, 0);
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// jichi 7/2/2015: This must be consistent with the struct declared in vnrhook/pipe.cc
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DWORD pid = *(DWORD *)buff,
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module = *(DWORD *)(buff + 0x8),
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hookman = *(DWORD *)(buff + 0x4);
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//engine = *(DWORD *)(buff + 0xc);
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man->RegisterProcess(pid, hookman, module);
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// jichi 9/27/2013: why recursion?
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CreateNewPipe();
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//NtClose(IthCreateThread(UpdateWindows,0));
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while (::running) {
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if (!NT_SUCCESS(NtReadFile(hTextPipe,
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0, 0, 0,
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&ios,
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buff,
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0xf80,
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0, 0)))
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break;
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enum { data_offset = 0xc }; // jichi 10/27/2013: Seem to be the data offset in the pipe
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DWORD RecvLen = ios.uInformation;
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if (RecvLen < data_offset)
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break;
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DWORD hook = *(DWORD *)buff;
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union { DWORD retn; DWORD cmd_type; };
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union { DWORD split; DWORD new_engine_type; };
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retn = *(DWORD *)(buff + 4);
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split = *(DWORD *)(buff + 8);
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buff[RecvLen] = 0;
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buff[RecvLen + 1] = 0;
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if (hook == HOST_NOTIFICATION) {
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switch (cmd_type) {
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case HOST_NOTIFICATION_NEWHOOK:
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{
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static long lock;
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while (InterlockedExchange(&lock, 1) == 1);
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ProcessEventCallback new_hook = man->ProcessNewHook();
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if (new_hook)
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new_hook(pid);
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lock = 0;
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} break;
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case HOST_NOTIFICATION_TEXT:
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//qDebug() << ((LPCSTR)(buff + 8));
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break;
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}
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} else {
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// jichi 9/28/2013: Debug raw data
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//ITH_DEBUG_DWORD9(RecvLen - 0xc,
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// buff[0xc], buff[0xd], buff[0xe], buff[0xf],
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// buff[0x10], buff[0x11], buff[0x12], buff[0x13]);
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const BYTE *data = buff + data_offset; // th
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int len = RecvLen - data_offset;
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bool space = ::has_leading_space(data, len);
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if (space) {
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const BYTE *it = ::Filter(data, len);
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len -= it - data;
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data = it;
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}
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if (len >> 31) // jichi 10/27/2013: len is too large, which seldom happens
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len = 0;
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//man->DispatchText(pid, len ? data : nullptr, hook, retn, split, len, space);
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man->DispatchText(pid, data, hook, retn, split, len, space);
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}
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}
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EnterCriticalSection(&detachCs);
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HANDLE hDisconnect = IthCreateEvent(nullptr);
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if (STATUS_PENDING == NtFsControlFile(
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hTextPipe,
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hDisconnect,
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0, 0,
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&ios,
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CTL_CODE(FILE_DEVICE_NAMED_PIPE, NAMED_PIPE_DISCONNECT, 0, 0),
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0, 0, 0, 0))
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NtWaitForSingleObject(hDisconnect, 0, 0);
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NtClose(hDisconnect);
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DetachFromProcess(pid);
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man->UnRegisterProcess(pid);
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//NtClearEvent(hDetachEvent);
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LeaveCriticalSection(&detachCs);
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delete[] buff;
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if (::running)
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DOUT("detached");
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//if (::running) {
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// swprintf((LPWSTR)buff, FormatDetach, pid);
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// ConsoleOutput((LPWSTR)buff);
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// NtClose(IthCreateThread(UpdateWindows, 0));
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//}
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return 0;
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}
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// EOF
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