18fbdbb456
Main: - It's now implemented thanks to `<mutex>`. No more platform-specific implementations. - `BinaryMutex` (non-recursive) is added, as an alternative for special cases. - Doesn't need allocation/deallocation anymore. It can live in the stack and be part of other classes. - Because of that, it's methods are now `const` and the inner mutex is `mutable` so it can be easily used in `const` contexts. - A no-op implementation is provided if `NO_THREADS` is defined. No more need to add `#ifdef NO_THREADS` just for this. - `MutexLock` now takes a reference. At this point the cases of null `Mutex`es are rare. If you ever need that, just don't use `MutexLock`. - Thread-safe utilities are therefore simpler now. Misc.: - `ScopedMutexLock` is dropped and replaced by `MutexLock`, because they were pretty much the same. - Every case of lock, do-something, unlock is replaced by `MutexLock` (complex cases where it's not straightfoward are kept as as explicit lock and unlock). - `ShaderRD` contained an `std::mutex`, which has been replaced by `Mutex`.
349 lines
9.9 KiB
C++
349 lines
9.9 KiB
C++
/*************************************************************************/
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/* editor_file_server.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "editor_file_server.h"
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#include "../editor_settings.h"
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#include "core/io/marshalls.h"
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//#define DEBUG_PRINT(m_p) print_line(m_p)
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//#define DEBUG_TIME(m_what) printf("MS: %s - %lu\n", m_what, OS::get_singleton()->get_ticks_usec());
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#define DEBUG_PRINT(m_what)
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#define DEBUG_TIME(m_what)
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void EditorFileServer::_close_client(ClientData *cd) {
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cd->connection->disconnect_from_host();
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{
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MutexLock lock(cd->efs->wait_mutex);
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cd->efs->to_wait.insert(cd->thread);
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}
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while (cd->files.size()) {
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memdelete(cd->files.front()->get());
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cd->files.erase(cd->files.front());
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}
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memdelete(cd);
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}
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void EditorFileServer::_subthread_start(void *s) {
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ClientData *cd = (ClientData *)s;
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cd->connection->set_no_delay(true);
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uint8_t buf4[8];
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Error err = cd->connection->get_data(buf4, 4);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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int passlen = decode_uint32(buf4);
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if (passlen > 512) {
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_close_client(cd);
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ERR_FAIL_COND(passlen > 512);
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} else if (passlen > 0) {
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Vector<char> passutf8;
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passutf8.resize(passlen + 1);
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err = cd->connection->get_data((uint8_t *)passutf8.ptr(), passlen);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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passutf8.write[passlen] = 0;
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String s2;
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s2.parse_utf8(passutf8.ptr());
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if (s2 != cd->efs->password) {
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encode_uint32(ERR_INVALID_DATA, buf4);
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cd->connection->put_data(buf4, 4);
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OS::get_singleton()->delay_usec(1000000);
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_close_client(cd);
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ERR_PRINT("CLIENT PASSWORD MISMATCH");
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ERR_FAIL();
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}
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} else {
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if (cd->efs->password != "") {
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encode_uint32(ERR_INVALID_DATA, buf4);
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cd->connection->put_data(buf4, 4);
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OS::get_singleton()->delay_usec(1000000);
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_close_client(cd);
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ERR_PRINT("CLIENT PASSWORD MISMATCH (should be empty!)");
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ERR_FAIL();
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}
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}
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encode_uint32(OK, buf4);
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cd->connection->put_data(buf4, 4);
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while (!cd->quit) {
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//wait for ID
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err = cd->connection->get_data(buf4, 4);
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DEBUG_TIME("get_data")
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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int id = decode_uint32(buf4);
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//wait for command
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err = cd->connection->get_data(buf4, 4);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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int cmd = decode_uint32(buf4);
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switch (cmd) {
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case FileAccessNetwork::COMMAND_FILE_EXISTS:
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case FileAccessNetwork::COMMAND_GET_MODTIME:
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case FileAccessNetwork::COMMAND_OPEN_FILE: {
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DEBUG_TIME("open_file")
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err = cd->connection->get_data(buf4, 4);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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int namelen = decode_uint32(buf4);
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Vector<char> fileutf8;
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fileutf8.resize(namelen + 1);
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err = cd->connection->get_data((uint8_t *)fileutf8.ptr(), namelen);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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fileutf8.write[namelen] = 0;
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String s2;
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s2.parse_utf8(fileutf8.ptr());
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if (cmd == FileAccessNetwork::COMMAND_FILE_EXISTS) {
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print_verbose("FILE EXISTS: " + s2);
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}
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if (cmd == FileAccessNetwork::COMMAND_GET_MODTIME) {
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print_verbose("MOD TIME: " + s2);
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}
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if (cmd == FileAccessNetwork::COMMAND_OPEN_FILE) {
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print_verbose("OPEN: " + s2);
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}
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if (!s2.begins_with("res://")) {
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_close_client(cd);
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ERR_FAIL_COND(!s2.begins_with("res://"));
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}
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ERR_CONTINUE(cd->files.has(id));
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if (cmd == FileAccessNetwork::COMMAND_FILE_EXISTS) {
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encode_uint32(id, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccessNetwork::RESPONSE_FILE_EXISTS, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccess::exists(s2), buf4);
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cd->connection->put_data(buf4, 4);
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DEBUG_TIME("open_file_end")
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break;
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}
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if (cmd == FileAccessNetwork::COMMAND_GET_MODTIME) {
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encode_uint32(id, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccessNetwork::RESPONSE_GET_MODTIME, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint64(FileAccess::get_modified_time(s2), buf4);
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cd->connection->put_data(buf4, 8);
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DEBUG_TIME("open_file_end")
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break;
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}
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FileAccess *fa = FileAccess::open(s2, FileAccess::READ);
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if (!fa) {
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//not found, continue
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encode_uint32(id, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccessNetwork::RESPONSE_OPEN, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(ERR_FILE_NOT_FOUND, buf4);
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cd->connection->put_data(buf4, 4);
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DEBUG_TIME("open_file_end")
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break;
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}
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encode_uint32(id, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccessNetwork::RESPONSE_OPEN, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(OK, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint64(fa->get_len(), buf4);
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cd->connection->put_data(buf4, 8);
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cd->files[id] = fa;
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DEBUG_TIME("open_file_end")
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} break;
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case FileAccessNetwork::COMMAND_READ_BLOCK: {
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err = cd->connection->get_data(buf4, 8);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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ERR_CONTINUE(!cd->files.has(id));
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uint64_t offset = decode_uint64(buf4);
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err = cd->connection->get_data(buf4, 4);
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if (err != OK) {
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_close_client(cd);
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ERR_FAIL_COND(err != OK);
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}
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int blocklen = decode_uint32(buf4);
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ERR_CONTINUE(blocklen > (16 * 1024 * 1024));
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cd->files[id]->seek(offset);
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Vector<uint8_t> buf;
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buf.resize(blocklen);
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int read = cd->files[id]->get_buffer(buf.ptrw(), blocklen);
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ERR_CONTINUE(read < 0);
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print_verbose("GET BLOCK - offset: " + itos(offset) + ", blocklen: " + itos(blocklen));
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//not found, continue
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encode_uint32(id, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint32(FileAccessNetwork::RESPONSE_DATA, buf4);
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cd->connection->put_data(buf4, 4);
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encode_uint64(offset, buf4);
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cd->connection->put_data(buf4, 8);
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encode_uint32(read, buf4);
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cd->connection->put_data(buf4, 4);
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cd->connection->put_data(buf.ptr(), read);
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} break;
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case FileAccessNetwork::COMMAND_CLOSE: {
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print_verbose("CLOSED");
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ERR_CONTINUE(!cd->files.has(id));
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memdelete(cd->files[id]);
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cd->files.erase(id);
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} break;
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}
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}
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_close_client(cd);
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}
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void EditorFileServer::_thread_start(void *s) {
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EditorFileServer *self = (EditorFileServer *)s;
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while (!self->quit) {
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if (self->cmd == CMD_ACTIVATE) {
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self->server->listen(self->port);
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self->active = true;
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self->cmd = CMD_NONE;
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} else if (self->cmd == CMD_STOP) {
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self->server->stop();
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self->active = false;
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self->cmd = CMD_NONE;
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}
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if (self->active) {
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if (self->server->is_connection_available()) {
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ClientData *cd = memnew(ClientData);
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cd->connection = self->server->take_connection();
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cd->efs = self;
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cd->quit = false;
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cd->thread = Thread::create(_subthread_start, cd);
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}
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}
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self->wait_mutex.lock();
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while (self->to_wait.size()) {
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Thread *w = self->to_wait.front()->get();
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self->to_wait.erase(w);
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self->wait_mutex.unlock();
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Thread::wait_to_finish(w);
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memdelete(w);
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self->wait_mutex.lock();
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}
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self->wait_mutex.unlock();
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OS::get_singleton()->delay_usec(100000);
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}
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}
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void EditorFileServer::start() {
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stop();
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port = EDITOR_DEF("filesystem/file_server/port", 6010);
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password = EDITOR_DEF("filesystem/file_server/password", "");
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cmd = CMD_ACTIVATE;
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}
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bool EditorFileServer::is_active() const {
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return active;
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}
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void EditorFileServer::stop() {
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cmd = CMD_STOP;
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}
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EditorFileServer::EditorFileServer() {
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server.instance();
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quit = false;
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active = false;
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cmd = CMD_NONE;
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thread = Thread::create(_thread_start, this);
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EDITOR_DEF("filesystem/file_server/port", 6010);
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EDITOR_DEF("filesystem/file_server/password", "");
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}
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EditorFileServer::~EditorFileServer() {
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quit = true;
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Thread::wait_to_finish(thread);
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memdelete(thread);
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}
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