260 lines
9.0 KiB
C++
260 lines
9.0 KiB
C++
#include "host.h"
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#include "defs.h"
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#include "module.h"
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#include "hookcode.h"
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#include "../texthook/texthook.h"
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extern const wchar_t* ALREADY_INJECTED;
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extern const wchar_t* NEED_32_BIT;
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extern const wchar_t* NEED_64_BIT;
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extern const wchar_t* INJECT_FAILED;
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extern const wchar_t* CONSOLE;
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extern const wchar_t* CLIPBOARD;
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namespace
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{
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class ProcessRecord
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{
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public:
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ProcessRecord(DWORD processId, HANDLE pipe) :
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pipe(pipe),
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mappedFile(OpenFileMappingW(FILE_MAP_READ, FALSE, (ITH_SECTION_ + std::to_wstring(processId)).c_str())),
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view(*(const TextHook(*)[MAX_HOOK])MapViewOfFile(mappedFile, FILE_MAP_READ, 0, 0, HOOK_SECTION_SIZE / 2)), // jichi 1/16/2015: Changed to half to hook section size
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viewMutex(ITH_HOOKMAN_MUTEX_ + std::to_wstring(processId))
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{}
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~ProcessRecord()
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{
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UnmapViewOfFile(view);
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}
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TextHook GetHook(uint64_t addr)
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{
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if (!view) return {};
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std::scoped_lock lock(viewMutex);
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for (auto hook : view) if (hook.address == addr) return hook;
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return {};
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}
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template <typename T>
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void Send(T data)
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{
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static_assert(sizeof(data) < PIPE_BUFFER_SIZE);
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std::thread([=]
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{
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WriteFile(pipe, &data, sizeof(data), DUMMY, nullptr);
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}).detach();
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}
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Host::HookEventHandler OnHookFound = [](HookParam hp, std::wstring text)
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{
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Host::AddConsoleOutput(HookCode::Generate(hp) + L": " + text);
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};
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private:
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HANDLE pipe;
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AutoHandle<> mappedFile;
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const TextHook(&view)[MAX_HOOK];
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WinMutex viewMutex;
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};
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size_t HashThreadParam(ThreadParam tp) { return std::hash<int64_t>()(tp.processId + tp.addr) + std::hash<int64_t>()(tp.ctx + tp.ctx2); }
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Synchronized<std::unordered_map<ThreadParam, TextThread, Functor<HashThreadParam>>> textThreadsByParams;
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Synchronized<std::unordered_map<DWORD, ProcessRecord>> processRecordsByIds;
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Host::ProcessEventHandler OnConnect, OnDisconnect;
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Host::ThreadEventHandler OnCreate, OnDestroy;
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void RemoveThreads(std::function<bool(ThreadParam)> removeIf)
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{
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std::vector<TextThread*> threadsToRemove;
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for (auto& [tp, thread] : textThreadsByParams.Acquire().contents) if (removeIf(tp)) threadsToRemove.push_back(&thread);
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for (auto thread : threadsToRemove)
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{
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OnDestroy(*thread);
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textThreadsByParams->erase(thread->tp);
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}
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}
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void CreatePipe()
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{
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std::thread([]
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{
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struct PipeCloser { void operator()(HANDLE h) { DisconnectNamedPipe(h); CloseHandle(h); } };
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AutoHandle<PipeCloser>
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hookPipe = CreateNamedPipeW(HOOK_PIPE, PIPE_ACCESS_INBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, 0, PIPE_BUFFER_SIZE, MAXDWORD, &allAccess),
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hostPipe = CreateNamedPipeW(HOST_PIPE, PIPE_ACCESS_OUTBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, PIPE_BUFFER_SIZE, 0, MAXDWORD, &allAccess);
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static AutoHandle<> pipeAvailableEvent = CreateEventW(&allAccess, FALSE, FALSE, PIPE_AVAILABLE_EVENT);
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SetEvent(pipeAvailableEvent);
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ConnectNamedPipe(hookPipe, nullptr);
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BYTE buffer[PIPE_BUFFER_SIZE] = {};
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DWORD bytesRead, processId;
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ReadFile(hookPipe, &processId, sizeof(processId), &bytesRead, nullptr);
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processRecordsByIds->try_emplace(processId, processId, hostPipe);
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OnConnect(processId);
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CreatePipe();
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while (ReadFile(hookPipe, buffer, PIPE_BUFFER_SIZE, &bytesRead, nullptr))
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switch (*(HostNotificationType*)buffer)
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{
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case HOST_NOTIFICATION_FOUND_HOOK:
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{
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auto info = *(HookFoundNotif*)buffer;
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auto OnHookFound = processRecordsByIds->at(processId).OnHookFound;
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std::wstring wide = info.text;
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if (wide.size() > STRING) OnHookFound(info.hp, std::move(info.text));
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info.hp.type &= ~USING_UNICODE;
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if (auto converted = StringToWideString((char*)info.text, info.hp.codepage))
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if (converted->size() > STRING) OnHookFound(info.hp, std::move(converted.value()));
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if (auto converted = StringToWideString((char*)info.text, info.hp.codepage = CP_UTF8))
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if (converted->size() > STRING) OnHookFound(info.hp, std::move(converted.value()));
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}
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break;
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case HOST_NOTIFICATION_RMVHOOK:
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{
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auto info = *(HookRemovedNotif*)buffer;
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RemoveThreads([&](ThreadParam tp) { return tp.processId == processId && tp.addr == info.address; });
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}
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break;
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case HOST_NOTIFICATION_TEXT:
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{
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auto info = *(ConsoleOutputNotif*)buffer;
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Host::AddConsoleOutput(StringToWideString(info.message));
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}
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break;
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default:
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{
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auto tp = *(ThreadParam*)buffer;
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auto textThreadsByParams = ::textThreadsByParams.Acquire();
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auto thread = textThreadsByParams->find(tp);
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if (thread == textThreadsByParams->end())
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{
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try { thread = textThreadsByParams->try_emplace(tp, tp, processRecordsByIds->at(tp.processId).GetHook(tp.addr).hp).first; }
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catch (std::out_of_range) { continue; } // probably garbage data in pipe, try again
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OnCreate(thread->second);
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}
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thread->second.Push(buffer + sizeof(tp), bytesRead - sizeof(tp));
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}
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break;
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}
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RemoveThreads([&](ThreadParam tp) { return tp.processId == processId; });
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OnDisconnect(processId);
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processRecordsByIds->erase(processId);
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}).detach();
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}
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}
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namespace Host
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{
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void Start(ProcessEventHandler Connect, ProcessEventHandler Disconnect, ThreadEventHandler Create, ThreadEventHandler Destroy, TextThread::OutputCallback Output)
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{
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OnConnect = Connect;
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OnDisconnect = Disconnect;
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OnCreate = [Create](TextThread& thread) { Create(thread); thread.Start(); };
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OnDestroy = [Destroy](TextThread& thread) { thread.Stop(); Destroy(thread); };
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TextThread::Output = Output;
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textThreadsByParams->try_emplace(console, console, HookParam{}, CONSOLE);
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OnCreate(GetThread(console));
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textThreadsByParams->try_emplace(clipboard, clipboard, HookParam{}, CLIPBOARD);
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OnCreate(GetThread(clipboard));
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CreatePipe();
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static AutoHandle<> clipboardUpdate = CreateEventW(nullptr, FALSE, TRUE, NULL);
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SetWindowsHookExW(WH_GETMESSAGE, [](int statusCode, WPARAM wParam, LPARAM lParam)
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{
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if (statusCode == HC_ACTION && wParam == PM_REMOVE && ((MSG*)lParam)->message == WM_CLIPBOARDUPDATE) SetEvent(clipboardUpdate);
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return CallNextHookEx(NULL, statusCode, wParam, lParam);
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}, NULL, GetCurrentThreadId());
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std::thread([]
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{
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while (WaitForSingleObject(clipboardUpdate, INFINITE) == WAIT_OBJECT_0)
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{
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std::optional<std::wstring> clipboardText;
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for (int retry = 0; !clipboardText && retry < 3; ++retry) // retry loop in case something else is using the clipboard
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{
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Sleep(10);
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if (!IsClipboardFormatAvailable(CF_UNICODETEXT)) continue;
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if (!OpenClipboard(NULL)) continue;
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if (AutoHandle<Functor<GlobalUnlock>> clipboard = GetClipboardData(CF_UNICODETEXT)) clipboardText = (wchar_t*)GlobalLock(clipboard);
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CloseClipboard();
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}
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if (clipboardText) GetThread(clipboard).AddSentence(std::move(clipboardText.value()));
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}
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throw;
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}).detach();
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}
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void InjectProcess(DWORD processId)
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{
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std::thread([processId]
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{
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if (processId == GetCurrentProcessId()) return;
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WinMutex(ITH_HOOKMAN_MUTEX_ + std::to_wstring(processId));
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if (GetLastError() == ERROR_ALREADY_EXISTS) return AddConsoleOutput(ALREADY_INJECTED);
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if (AutoHandle<> process = OpenProcess(PROCESS_ALL_ACCESS, FALSE, processId))
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{
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#ifdef _WIN64
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BOOL invalidProcess = FALSE;
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IsWow64Process(process, &invalidProcess);
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if (invalidProcess) return AddConsoleOutput(NEED_32_BIT);
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#endif
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static std::wstring location = std::filesystem::path(GetModuleFilename().value()).replace_filename(ITH_DLL);
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if (LPVOID remoteData = VirtualAllocEx(process, nullptr, (location.size() + 1) * sizeof(wchar_t), MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE))
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{
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WriteProcessMemory(process, remoteData, location.c_str(), (location.size() + 1) * sizeof(wchar_t), nullptr);
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if (AutoHandle<> thread = CreateRemoteThread(process, nullptr, 0, (LPTHREAD_START_ROUTINE)LoadLibraryW, remoteData, 0, nullptr)) WaitForSingleObject(thread, INFINITE);
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else if (GetLastError() == ERROR_ACCESS_DENIED) AddConsoleOutput(NEED_64_BIT); // https://stackoverflow.com/questions/16091141/createremotethread-access-denied
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VirtualFreeEx(process, remoteData, 0, MEM_RELEASE);
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return;
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}
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}
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AddConsoleOutput(INJECT_FAILED);
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}).detach();
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}
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void DetachProcess(DWORD processId)
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{
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processRecordsByIds->at(processId).Send(HOST_COMMAND_DETACH);
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}
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void InsertHook(DWORD processId, HookParam hp)
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{
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processRecordsByIds->at(processId).Send(InsertHookCmd(hp));
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}
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void RemoveHook(DWORD processId, uint64_t address)
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{
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processRecordsByIds->at(processId).Send(RemoveHookCmd(address));
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}
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void FindHooks(DWORD processId, SearchParam sp, HookEventHandler HookFound)
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{
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if (HookFound) processRecordsByIds->at(processId).OnHookFound = HookFound;
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processRecordsByIds->at(processId).Send(FindHookCmd(sp));
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}
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TextThread& GetThread(ThreadParam tp)
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{
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return textThreadsByParams->at(tp);
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}
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TextThread* GetThread(int64_t handle)
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{
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for (auto& [tp, thread] : textThreadsByParams.Acquire().contents) if (thread.handle == handle) return &thread;
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return nullptr;
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}
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void AddConsoleOutput(std::wstring text)
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{
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GetThread(console).AddSentence(std::move(text));
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}
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}
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