131 lines
3.1 KiB
C++
131 lines
3.1 KiB
C++
#include "connection.h"
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#define NOMCX
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#define NOSERVICE
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#define NOIME
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#include <assert.h>
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#include <windows.h>
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int GetProcessId()
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{
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return (int)::GetCurrentProcessId();
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}
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struct BaseConnectionWin : public BaseConnection {
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HANDLE pipe{INVALID_HANDLE_VALUE};
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};
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static BaseConnectionWin Connection;
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/*static*/ BaseConnection* BaseConnection::Create()
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{
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return &Connection;
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}
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/*static*/ void BaseConnection::Destroy(BaseConnection*& c)
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{
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auto self = reinterpret_cast<BaseConnectionWin*>(c);
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self->Close();
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c = nullptr;
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}
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bool BaseConnection::Open()
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{
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wchar_t pipeName[]{L"\\\\?\\pipe\\discord-ipc-0"};
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const size_t pipeDigit = sizeof(pipeName) / sizeof(wchar_t) - 2;
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pipeName[pipeDigit] = L'0';
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auto self = reinterpret_cast<BaseConnectionWin*>(this);
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for (;;) {
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self->pipe = ::CreateFileW(
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pipeName, GENERIC_READ | GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
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if (self->pipe != INVALID_HANDLE_VALUE) {
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self->isOpen = true;
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return true;
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}
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auto lastError = GetLastError();
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if (lastError == ERROR_FILE_NOT_FOUND) {
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if (pipeName[pipeDigit] < L'9') {
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pipeName[pipeDigit]++;
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continue;
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}
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}
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else if (lastError == ERROR_PIPE_BUSY) {
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if (!WaitNamedPipeW(pipeName, 10000)) {
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return false;
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}
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continue;
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}
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return false;
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}
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}
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bool BaseConnection::Close()
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{
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auto self = reinterpret_cast<BaseConnectionWin*>(this);
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::CloseHandle(self->pipe);
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self->pipe = INVALID_HANDLE_VALUE;
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self->isOpen = false;
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return true;
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}
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bool BaseConnection::Write(const void* data, size_t length)
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{
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if (length == 0) {
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return true;
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}
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auto self = reinterpret_cast<BaseConnectionWin*>(this);
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assert(self);
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if (!self) {
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return false;
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}
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if (self->pipe == INVALID_HANDLE_VALUE) {
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return false;
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}
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assert(data);
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if (!data) {
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return false;
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}
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const DWORD bytesLength = (DWORD)length;
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DWORD bytesWritten = 0;
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return ::WriteFile(self->pipe, data, bytesLength, &bytesWritten, nullptr) == TRUE &&
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bytesWritten == bytesLength;
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}
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bool BaseConnection::Read(void* data, size_t length)
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{
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assert(data);
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if (!data) {
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return false;
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}
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auto self = reinterpret_cast<BaseConnectionWin*>(this);
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assert(self);
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if (!self) {
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return false;
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}
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if (self->pipe == INVALID_HANDLE_VALUE) {
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return false;
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}
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DWORD bytesAvailable = 0;
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if (::PeekNamedPipe(self->pipe, nullptr, 0, nullptr, &bytesAvailable, nullptr)) {
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if (bytesAvailable >= length) {
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DWORD bytesToRead = (DWORD)length;
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DWORD bytesRead = 0;
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if (::ReadFile(self->pipe, data, bytesToRead, &bytesRead, nullptr) == TRUE) {
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assert(bytesToRead == bytesRead);
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return true;
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}
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else {
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Close();
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}
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}
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}
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else {
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Close();
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}
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return false;
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}
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