diff options
Diffstat (limited to 'drivers/windows/file_access_windows_pipe.cpp')
| -rw-r--r-- | drivers/windows/file_access_windows_pipe.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/windows/file_access_windows_pipe.cpp b/drivers/windows/file_access_windows_pipe.cpp new file mode 100644 index 0000000000..7902c8e1d8 --- /dev/null +++ b/drivers/windows/file_access_windows_pipe.cpp @@ -0,0 +1,159 @@ +/**************************************************************************/ +/* file_access_windows_pipe.cpp */ +/**************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/**************************************************************************/ +/* 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) { + // 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] != 0 || fd[1] != 0, ERR_ALREADY_IN_USE, "Pipe is already in use."); + fd[0] = p_rfd; + fd[1] = p_wfd; + + 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] != 0 || fd[1] != 0, 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, NULL); + if (h == INVALID_HANDLE_VALUE) { + h = CreateNamedPipeW((LPCWSTR)path.utf16().get_data(), PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT, 1, 4096, 4096, 0, nullptr); + if (h == INVALID_HANDLE_VALUE) { + last_error = ERR_FILE_CANT_OPEN; + return last_error; + } + ConnectNamedPipe(h, NULL); + } + fd[0] = h; + fd[1] = h; + + last_error = OK; + return OK; +} + +void FileAccessWindowsPipe::_close() { + if (fd[0] == 0) { + return; + } + if (fd[1] != fd[0]) { + CloseHandle(fd[1]); + } + CloseHandle(fd[0]); + fd[0] = 0; + fd[1] = 0; +} + +bool FileAccessWindowsPipe::is_open() const { + return (fd[0] != 0 || fd[1] != 0); +} + +String FileAccessWindowsPipe::get_path() const { + return path_src; +} + +String FileAccessWindowsPipe::get_path_absolute() const { + return path_src; +} + +uint8_t FileAccessWindowsPipe::get_8() const { + ERR_FAIL_COND_V_MSG(fd[0] == 0, 0, "Pipe must be opened before use."); + + uint8_t b; + if (!ReadFile(fd[0], &b, 1, nullptr, nullptr)) { + last_error = ERR_FILE_CANT_READ; + b = '\0'; + } else { + last_error = OK; + } + return b; +} + +uint64_t FileAccessWindowsPipe::get_buffer(uint8_t *p_dst, uint64_t p_length) const { + ERR_FAIL_COND_V(!p_dst && p_length > 0, -1); + ERR_FAIL_COND_V_MSG(fd[0] == 0, -1, "Pipe must be opened before use."); + + DWORD read = -1; + 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_8(uint8_t p_src) { + ERR_FAIL_COND_MSG(fd[1] == 0, "Pipe must be opened before use."); + if (!WriteFile(fd[1], &p_src, 1, nullptr, nullptr)) { + last_error = ERR_FILE_CANT_WRITE; + } else { + last_error = OK; + } +} + +void FileAccessWindowsPipe::store_buffer(const uint8_t *p_src, uint64_t p_length) { + ERR_FAIL_COND_MSG(fd[1] == 0, "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 |