133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
// pipe.cc
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// 8/24/2013 jichi
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// Branch: ITH_DLL/pipe.cpp, rev 66
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// 8/24/2013 TODO: Clean up this file
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#ifdef _MSC_VER
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# pragma warning (disable:4100) // C4100: unreference formal parameter
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#endif // _MSC_VER
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#include "src/hijack/texthook.h"
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#include "src/engine/match.h"
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#include "src/util/util.h"
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#include "src/main.h"
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#include "include/defs.h"
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#include "src/util/growl.h"
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#include "ithsys/ithsys.h"
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#include <cstdio> // for swprintf
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HANDLE hookPipe;
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extern HMODULE currentModule;
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DWORD WINAPI PipeManager(LPVOID unused)
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{
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enum { STANDARD_WAIT = 50 };
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while (::running)
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{
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DWORD count;
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BYTE buffer[PIPE_BUFFER_SIZE];
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HANDLE hostPipe = ::hookPipe = INVALID_HANDLE_VALUE,
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pipeAcquisitionMutex = CreateMutexW(nullptr, TRUE, ITH_GRANTPIPE_MUTEX);
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while (::hookPipe == INVALID_HANDLE_VALUE || hostPipe == INVALID_HANDLE_VALUE)
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{
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Sleep(STANDARD_WAIT);
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if (::hookPipe == INVALID_HANDLE_VALUE)
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{
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::hookPipe = CreateFileW(ITH_TEXT_PIPE, GENERIC_WRITE, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
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}
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if (hostPipe == INVALID_HANDLE_VALUE)
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{
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hostPipe = CreateFileW(ITH_COMMAND_PIPE, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
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}
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}
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*(DWORD*)buffer = GetCurrentProcessId();
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WriteFile(::hookPipe, buffer, sizeof(DWORD), &count, nullptr);
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ReleaseMutex(pipeAcquisitionMutex);
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CloseHandle(pipeAcquisitionMutex);
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ConsoleOutput("vnrcli:WaitForPipe: pipe connected");
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Engine::Hijack();
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while (::running)
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{
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if (!ReadFile(hostPipe, buffer, PIPE_BUFFER_SIZE / 2, &count, nullptr)) // Artikash 5/21/2018: why / 2? wchar_t?
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{
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break;
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}
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DWORD command = *(DWORD*)buffer;
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switch (command)
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{
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case HOST_COMMAND_NEW_HOOK:
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buffer[count] = 0;
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NewHook(*(HookParam *)(buffer + sizeof(DWORD)), // Hook parameter
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(LPSTR)(buffer + 4 + sizeof(HookParam)), // Hook name
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0
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);
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break;
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case HOST_COMMAND_REMOVE_HOOK:
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{
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TextHook *in = hookman;
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for (int i = 0; i < currentHook; in++)
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{
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if (in->Address()) i++;
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if (in->Address() == *(DWORD *)(buffer + sizeof(DWORD))) // Hook address
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{
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break;
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}
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}
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if (in->Address())
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{
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in->ClearHook();
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}
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}
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break;
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case HOST_COMMAND_DETACH:
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::running = false;
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break;
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}
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}
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CloseHandle(::hookPipe);
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CloseHandle(hostPipe);
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}
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FreeLibraryAndExitThread(::currentModule, 0);
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return 0;
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}
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void ConsoleOutput(LPCSTR text)
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{
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BYTE buffer[PIPE_BUFFER_SIZE];
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*(DWORD*)buffer = HOST_NOTIFICATION;
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*(DWORD*)(buffer + sizeof(DWORD)) = HOST_NOTIFICATION_TEXT;
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strcpy((char*)buffer + sizeof(DWORD) * 2, text);
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DWORD unused;
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WriteFile(::hookPipe, buffer, strlen(text) + sizeof(DWORD) * 2, &unused, nullptr);
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}
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void NotifyHookInsert(HookParam hp, LPCSTR name)
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{
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BYTE buffer[PIPE_BUFFER_SIZE];
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*(DWORD*)buffer = HOST_NOTIFICATION;
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*(DWORD*)(buffer + sizeof(DWORD)) = HOST_NOTIFICATION_NEWHOOK;
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*(HookParam*)(buffer + sizeof(DWORD) * 2) = hp;
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strcpy((char*)buffer + sizeof(DWORD) * 2 + sizeof(HookParam), name);
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DWORD unused;
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WriteFile(::hookPipe, buffer, strlen(name) + sizeof(DWORD) * 2 + sizeof(HookParam), &unused, nullptr);
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return;
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}
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void NotifyHookRemove(DWORD addr)
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{
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BYTE buffer[sizeof(DWORD) * 3];
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*(DWORD*)buffer = HOST_NOTIFICATION;
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*(DWORD*)(buffer + sizeof(DWORD)) = HOST_NOTIFICATION_RMVHOOK;
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*(DWORD*)(buffer + sizeof(DWORD) * 2) = addr;
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DWORD unused;
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WriteFile(::hookPipe, buffer, sizeof(DWORD) * 3, &unused, nullptr);
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return;
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}
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// EOF
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