mirror of
https://github.com/Artikash/Textractor.git
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294 lines
8.6 KiB
C++
294 lines
8.6 KiB
C++
// host.cc
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// 8/24/2013 jichi
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// Branch IHF/main.cpp, rev 111
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#include "host.h"
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#include "const.h"
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#include "defs.h"
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#include "../vnrhook/texthook.h"
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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 hostPipe) :
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hostPipe(hostPipe),
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section(OpenFileMappingW(FILE_MAP_READ, FALSE, (ITH_SECTION_ + std::to_wstring(processId)).c_str())),
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sectionMap(MapViewOfFile(section, FILE_MAP_READ, 0, 0, HOOK_SECTION_SIZE / 2)), // jichi 1/16/2015: Changed to half to hook section size
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sectionMutex(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(sectionMap);
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CloseHandle(section);
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}
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TextHook GetHook(uint64_t addr)
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{
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if (sectionMap == nullptr) return {};
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LOCK(sectionMutex);
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auto hooks = (const TextHook*)sectionMap;
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for (int i = 0; i < MAX_HOOK; ++i)
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if (hooks[i].hp.insertion_address == addr) return hooks[i];
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return {};
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}
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HANDLE hostPipe;
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private:
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HANDLE section;
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LPVOID sectionMap;
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WinMutex sectionMutex;
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};
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ThreadEventCallback OnCreate, OnDestroy;
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ProcessEventCallback OnAttach, OnDetach;
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std::unordered_map<ThreadParam, std::shared_ptr<TextThread>> textThreadsByParams;
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std::unordered_map<DWORD, std::unique_ptr<ProcessRecord>> processRecordsByIds;
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std::recursive_mutex hostMutex;
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DWORD DUMMY;
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ThreadParam CONSOLE{ 0, -1ULL, -1ULL, -1ULL }, CLIPBOARD{ 0, 0, -1ULL, -1ULL };
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void DispatchText(ThreadParam tp, const BYTE* text, int len)
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{
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LOCK(hostMutex);
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if (textThreadsByParams[tp] == nullptr)
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{
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if (textThreadsByParams.size() > MAX_THREAD_COUNT) return Host::AddConsoleOutput(TOO_MANY_THREADS);
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OnCreate(textThreadsByParams[tp] = std::make_shared<TextThread>(tp, Host::GetHookParam(tp), Host::GetHookName(tp)));
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}
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textThreadsByParams[tp]->Push(text, len);
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}
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void RemoveThreads(std::function<bool(ThreadParam)> removeIf)
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{
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LOCK(hostMutex);
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for (auto it = textThreadsByParams.begin(); it != textThreadsByParams.end();)
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if (auto curr = it++; removeIf(curr->first))
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{
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OnDestroy(curr->second);
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textThreadsByParams.erase(curr->first);
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}
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}
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void RegisterProcess(DWORD processId, HANDLE hostPipe)
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{
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LOCK(hostMutex);
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processRecordsByIds.insert({ processId, std::make_unique<ProcessRecord>(processId, hostPipe) });
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OnAttach(processId);
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}
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void UnregisterProcess(DWORD processId)
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{
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OnDetach(processId);
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LOCK(hostMutex);
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processRecordsByIds.erase(processId);
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RemoveThreads([&](ThreadParam tp) { return tp.processId == processId; });
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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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SECURITY_DESCRIPTOR pipeSD = {};
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InitializeSecurityDescriptor(&pipeSD, SECURITY_DESCRIPTOR_REVISION);
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SetSecurityDescriptorDacl(&pipeSD, TRUE, NULL, FALSE); // Allow non-admin processes to connect to pipe created by admin host
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SECURITY_ATTRIBUTES pipeSA = { sizeof(SECURITY_ATTRIBUTES), &pipeSD, FALSE };
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HANDLE hookPipe = CreateNamedPipeW(HOOK_PIPE, PIPE_ACCESS_INBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, 0, PIPE_BUFFER_SIZE, MAXDWORD, &pipeSA);
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HANDLE hostPipe = CreateNamedPipeW(HOST_PIPE, PIPE_ACCESS_OUTBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, PIPE_BUFFER_SIZE, 0, MAXDWORD, &pipeSA);
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ConnectNamedPipe(hookPipe, nullptr);
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BYTE buffer[PIPE_BUFFER_SIZE + 1] = {};
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DWORD bytesRead, processId;
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ReadFile(hookPipe, &processId, sizeof(processId), &bytesRead, nullptr);
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RegisterProcess(processId, hostPipe);
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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_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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ThreadParam tp = *(ThreadParam*)buffer;
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buffer[bytesRead] = 0;
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buffer[bytesRead + 1] = 0;
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DispatchText(tp, buffer + sizeof(tp), bytesRead - sizeof(tp));
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}
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break;
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}
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UnregisterProcess(processId);
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DisconnectNamedPipe(hookPipe);
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DisconnectNamedPipe(hostPipe);
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CloseHandle(hookPipe);
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CloseHandle(hostPipe);
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}).detach();
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}
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std::optional<std::wstring> GetClipboardText()
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{
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if (!IsClipboardFormatAvailable(CF_UNICODETEXT)) return {};
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if (!OpenClipboard(NULL)) return {};
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if (HANDLE clipboardHandle = GetClipboardData(CF_UNICODETEXT))
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{
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std::wstring ret = (wchar_t*)GlobalLock(clipboardHandle);
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GlobalUnlock(clipboardHandle);
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CloseClipboard();
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return ret;
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}
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CloseClipboard();
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return {};
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}
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void StartCapturingClipboard()
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{
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std::thread([]
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{
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std::wstring last;
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while (true)
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{
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Sleep(50);
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if (auto text = GetClipboardText())
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if (last != text.value())
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Host::GetThread(CLIPBOARD)->AddSentence(last = text.value());
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}
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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(ProcessEventCallback onAttach, ProcessEventCallback onDetach, ThreadEventCallback onCreate, ThreadEventCallback onDestroy, TextThread::OutputCallback output)
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{
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OnAttach = onAttach; OnDetach = onDetach; OnCreate = onCreate; OnDestroy = onDestroy; TextThread::Output = output;
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RegisterProcess(CONSOLE.processId, INVALID_HANDLE_VALUE);
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OnCreate(textThreadsByParams[CONSOLE] = std::make_shared<TextThread>(CONSOLE, HookParam{}, L"Console"));
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OnCreate(textThreadsByParams[CLIPBOARD] = std::make_shared<TextThread>(CLIPBOARD, HookParam{}, L"Clipboard"));
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StartCapturingClipboard();
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CreatePipe();
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}
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void Close()
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{
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// Artikash 7/25/2018: This is only called when Textractor is closed, at which point Windows should free everything itself...right?
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#ifdef _DEBUG // Check memory leaks
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LOCK(hostMutex);
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processRecordsByIds.clear();
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textThreadsByParams.clear();
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#endif
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}
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bool InjectProcess(DWORD processId, DWORD timeout)
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{
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if (processId == GetCurrentProcessId()) return false;
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CloseHandle(CreateMutexW(nullptr, FALSE, (ITH_HOOKMAN_MUTEX_ + std::to_wstring(processId)).c_str()));
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if (GetLastError() == ERROR_ALREADY_EXISTS)
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{
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AddConsoleOutput(ALREADY_INJECTED);
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return false;
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}
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HMODULE textHooker = LoadLibraryExW(ITH_DLL, nullptr, DONT_RESOLVE_DLL_REFERENCES);
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wchar_t textHookerPath[MAX_PATH];
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DWORD textHookerPathSize = GetModuleFileNameW(textHooker, textHookerPath, MAX_PATH) * 2 + 2;
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FreeLibrary(textHooker);
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if (HANDLE processHandle = 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(processHandle, &invalidProcess);
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if (invalidProcess)
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{
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AddConsoleOutput(ARCHITECTURE_MISMATCH);
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CloseHandle(processHandle);
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return false;
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}
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#endif
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if (LPVOID remoteData = VirtualAllocEx(processHandle, nullptr, textHookerPathSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE))
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{
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WriteProcessMemory(processHandle, remoteData, textHookerPath, textHookerPathSize, nullptr);
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if (HANDLE thread = CreateRemoteThread(processHandle, nullptr, 0, (LPTHREAD_START_ROUTINE)LoadLibraryW, remoteData, 0, nullptr))
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{
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WaitForSingleObject(thread, timeout);
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CloseHandle(thread);
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VirtualFreeEx(processHandle, remoteData, 0, MEM_RELEASE);
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CloseHandle(processHandle);
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return true;
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}
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VirtualFreeEx(processHandle, remoteData, 0, MEM_RELEASE);
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CloseHandle(processHandle);
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}
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}
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AddConsoleOutput(INJECT_FAILED);
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return false;
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}
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void DetachProcess(DWORD processId)
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{
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LOCK(hostMutex);
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HostCommandType buffer(HOST_COMMAND_DETACH);
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WriteFile(processRecordsByIds.at(processId)->hostPipe, &buffer, sizeof(buffer), &DUMMY, nullptr);
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}
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void InsertHook(DWORD processId, HookParam hp, std::string name)
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{
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LOCK(hostMutex);
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InsertHookCmd buffer(hp, name);
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WriteFile(processRecordsByIds.at(processId)->hostPipe, &buffer, sizeof(buffer), &DUMMY, nullptr);
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}
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void RemoveHook(DWORD processId, uint64_t addr)
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{
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LOCK(hostMutex);
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RemoveHookCmd buffer(addr);
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WriteFile(processRecordsByIds.at(processId)->hostPipe, &buffer, sizeof(buffer), &DUMMY, nullptr);
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}
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HookParam GetHookParam(DWORD processId, uint64_t addr)
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{
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LOCK(hostMutex);
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return processRecordsByIds.at(processId)->GetHook(addr).hp;
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}
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std::wstring GetHookName(DWORD processId, uint64_t addr)
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{
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LOCK(hostMutex);
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return StringToWideString(processRecordsByIds.at(processId)->GetHook(addr).hookName);
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}
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std::shared_ptr<TextThread> GetThread(ThreadParam tp)
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{
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LOCK(hostMutex);
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return textThreadsByParams[tp];
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}
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void AddConsoleOutput(std::wstring text)
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{
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GetThread(CONSOLE)->AddSentence(text);
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}
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}
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// EOF
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