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/**************************************************************************/
/* file_access_windows_pipe.cpp */
/**************************************************************************/
/* This file is part of: */
/* REDOT ENGINE */
/* https://redotengine.org */
/**************************************************************************/
/* Copyright (c) 2024-present Redot Engine contributors */
/* (see REDOT_AUTHORS.md) */
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifdef WINDOWS_ENABLED
#include "file_access_windows_pipe.h"
#include "core/os/os.h"
#include "core/string/print_string.h"
Error FileAccessWindowsPipe::open_existing(HANDLE p_rfd, HANDLE p_wfd, bool p_blocking) {
// Open pipe using handles created by CreatePipe(rfd, wfd, NULL, 4096) call in the OS.execute_with_pipe.
_close();
path_src = String();
ERR_FAIL_COND_V_MSG(fd[0] != nullptr || fd[1] != nullptr, ERR_ALREADY_IN_USE, "Pipe is already in use.");
fd[0] = p_rfd;
fd[1] = p_wfd;
if (!p_blocking) {
DWORD mode = PIPE_READMODE_BYTE | PIPE_NOWAIT;
SetNamedPipeHandleState(fd[0], &mode, nullptr, nullptr);
SetNamedPipeHandleState(fd[1], &mode, nullptr, nullptr);
}
last_error = OK;
return OK;
}
Error FileAccessWindowsPipe::open_internal(const String &p_path, int p_mode_flags) {
_close();
path_src = p_path;
ERR_FAIL_COND_V_MSG(fd[0] != nullptr || fd[1] != nullptr, ERR_ALREADY_IN_USE, "Pipe is already in use.");
path = String("\\\\.\\pipe\\LOCAL\\") + p_path.replace("pipe://", "").replace("/", "_");
HANDLE h = CreateFileW((LPCWSTR)path.utf16().get_data(), GENERIC_READ | GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
if (h == INVALID_HANDLE_VALUE) {
h = CreateNamedPipeW((LPCWSTR)path.utf16().get_data(), PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_NOWAIT, 1, 4096, 4096, 0, nullptr);
if (h == INVALID_HANDLE_VALUE) {
last_error = ERR_FILE_CANT_OPEN;
return last_error;
}
ConnectNamedPipe(h, nullptr);
}
fd[0] = h;
fd[1] = h;
last_error = OK;
return OK;
}
void FileAccessWindowsPipe::_close() {
if (fd[0] == nullptr) {
return;
}
if (fd[1] != fd[0]) {
CloseHandle(fd[1]);
}
CloseHandle(fd[0]);
fd[0] = nullptr;
fd[1] = nullptr;
}
bool FileAccessWindowsPipe::is_open() const {
return (fd[0] != nullptr || fd[1] != nullptr);
}
String FileAccessWindowsPipe::get_path() const {
return path_src;
}
String FileAccessWindowsPipe::get_path_absolute() const {
return path_src;
}
uint64_t FileAccessWindowsPipe::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
ERR_FAIL_COND_V_MSG(fd[0] == nullptr, -1, "Pipe must be opened before use.");
ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
DWORD read = 0;
if (!ReadFile(fd[0], p_dst, p_length, &read, nullptr) || read != p_length) {
last_error = ERR_FILE_CANT_READ;
} else {
last_error = OK;
}
return read;
}
Error FileAccessWindowsPipe::get_error() const {
return last_error;
}
void FileAccessWindowsPipe::store_buffer(const uint8_t *p_src, uint64_t p_length) {
ERR_FAIL_COND_MSG(fd[1] == nullptr, "Pipe must be opened before use.");
ERR_FAIL_COND(!p_src && p_length > 0);
DWORD read = -1;
bool ok = WriteFile(fd[1], p_src, p_length, &read, nullptr);
if (!ok || read != p_length) {
last_error = ERR_FILE_CANT_WRITE;
} else {
last_error = OK;
}
}
void FileAccessWindowsPipe::close() {
_close();
}
FileAccessWindowsPipe::~FileAccessWindowsPipe() {
_close();
}
#endif // WINDOWS_ENABLED
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