mirror of
https://github.com/godotengine/godot.git
synced 2025-10-31 13:41:03 +00:00
355 lines
12 KiB
C++
355 lines
12 KiB
C++
/**************************************************************************/
|
|
/* ip.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. */
|
|
/**************************************************************************/
|
|
|
|
#include "ip.h"
|
|
|
|
#include "core/os/semaphore.h"
|
|
#include "core/os/thread.h"
|
|
#include "core/templates/hash_map.h"
|
|
#include "core/variant/typed_array.h"
|
|
|
|
/************* RESOLVER ******************/
|
|
|
|
struct _IP_ResolverPrivate {
|
|
struct QueueItem {
|
|
SafeNumeric<IP::ResolverStatus> status;
|
|
|
|
List<IPAddress> response;
|
|
|
|
String hostname;
|
|
IP::Type type;
|
|
|
|
void clear() {
|
|
status.set(IP::RESOLVER_STATUS_NONE);
|
|
response.clear();
|
|
type = IP::TYPE_NONE;
|
|
hostname = "";
|
|
}
|
|
|
|
QueueItem() {
|
|
clear();
|
|
}
|
|
};
|
|
|
|
QueueItem queue[IP::RESOLVER_MAX_QUERIES];
|
|
|
|
IP::ResolverID find_empty_id() const {
|
|
for (int i = 0; i < IP::RESOLVER_MAX_QUERIES; i++) {
|
|
if (queue[i].status.get() == IP::RESOLVER_STATUS_NONE) {
|
|
return i;
|
|
}
|
|
}
|
|
return IP::RESOLVER_INVALID_ID;
|
|
}
|
|
|
|
Mutex mutex;
|
|
Semaphore sem;
|
|
|
|
Thread thread;
|
|
SafeFlag thread_abort;
|
|
|
|
void resolve_queues() {
|
|
for (int i = 0; i < IP::RESOLVER_MAX_QUERIES; i++) {
|
|
if (queue[i].status.get() != IP::RESOLVER_STATUS_WAITING) {
|
|
continue;
|
|
}
|
|
|
|
MutexLock lock(mutex);
|
|
List<IPAddress> response;
|
|
String hostname = queue[i].hostname;
|
|
IP::Type type = queue[i].type;
|
|
lock.temp_unlock();
|
|
|
|
// We should not lock while resolving the hostname,
|
|
// only when modifying the queue.
|
|
IP::get_singleton()->_resolve_hostname(response, hostname, type);
|
|
|
|
lock.temp_relock();
|
|
// Could have been completed by another function, or deleted.
|
|
if (queue[i].status.get() != IP::RESOLVER_STATUS_WAITING) {
|
|
continue;
|
|
}
|
|
// We might be overriding another result, but we don't care as long as the result is valid.
|
|
if (response.size()) {
|
|
String key = get_cache_key(hostname, type);
|
|
cache[key] = response;
|
|
}
|
|
queue[i].response = response;
|
|
queue[i].status.set(response.is_empty() ? IP::RESOLVER_STATUS_ERROR : IP::RESOLVER_STATUS_DONE);
|
|
}
|
|
}
|
|
|
|
static void _thread_function(void *self) {
|
|
_IP_ResolverPrivate *ipr = static_cast<_IP_ResolverPrivate *>(self);
|
|
|
|
while (!ipr->thread_abort.is_set()) {
|
|
ipr->sem.wait();
|
|
ipr->resolve_queues();
|
|
}
|
|
}
|
|
|
|
HashMap<String, List<IPAddress>> cache;
|
|
|
|
static String get_cache_key(const String &p_hostname, IP::Type p_type) {
|
|
return itos(p_type) + p_hostname;
|
|
}
|
|
};
|
|
|
|
IPAddress IP::resolve_hostname(const String &p_hostname, IP::Type p_type) {
|
|
const PackedStringArray addresses = resolve_hostname_addresses(p_hostname, p_type);
|
|
return addresses.size() ? (IPAddress)addresses[0] : IPAddress();
|
|
}
|
|
|
|
PackedStringArray IP::resolve_hostname_addresses(const String &p_hostname, Type p_type) {
|
|
List<IPAddress> res;
|
|
String key = _IP_ResolverPrivate::get_cache_key(p_hostname, p_type);
|
|
|
|
{
|
|
MutexLock lock(resolver->mutex);
|
|
if (resolver->cache.has(key)) {
|
|
res = resolver->cache[key];
|
|
} else {
|
|
// This should be run unlocked so the resolver thread can keep resolving
|
|
// other requests.
|
|
lock.temp_unlock();
|
|
_resolve_hostname(res, p_hostname, p_type);
|
|
lock.temp_relock();
|
|
// We might be overriding another result, but we don't care as long as the result is valid.
|
|
if (res.size()) {
|
|
resolver->cache[key] = res;
|
|
}
|
|
}
|
|
}
|
|
|
|
PackedStringArray result;
|
|
for (const IPAddress &E : res) {
|
|
result.push_back(String(E));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
IP::ResolverID IP::resolve_hostname_queue_item(const String &p_hostname, IP::Type p_type) {
|
|
MutexLock lock(resolver->mutex);
|
|
|
|
ResolverID id = resolver->find_empty_id();
|
|
|
|
if (id == RESOLVER_INVALID_ID) {
|
|
WARN_PRINT("Out of resolver queries");
|
|
return id;
|
|
}
|
|
|
|
String key = _IP_ResolverPrivate::get_cache_key(p_hostname, p_type);
|
|
resolver->queue[id].hostname = p_hostname;
|
|
resolver->queue[id].type = p_type;
|
|
if (resolver->cache.has(key)) {
|
|
resolver->queue[id].response = resolver->cache[key];
|
|
resolver->queue[id].status.set(IP::RESOLVER_STATUS_DONE);
|
|
} else {
|
|
resolver->queue[id].response = List<IPAddress>();
|
|
resolver->queue[id].status.set(IP::RESOLVER_STATUS_WAITING);
|
|
if (resolver->thread.is_started()) {
|
|
resolver->sem.post();
|
|
} else {
|
|
resolver->resolve_queues();
|
|
}
|
|
}
|
|
|
|
return id;
|
|
}
|
|
|
|
IP::ResolverStatus IP::get_resolve_item_status(ResolverID p_id) const {
|
|
ERR_FAIL_INDEX_V_MSG(p_id, IP::RESOLVER_MAX_QUERIES, IP::RESOLVER_STATUS_NONE, vformat("Too many concurrent DNS resolver queries (%d, but should be %d at most). Try performing less network requests at once.", p_id, IP::RESOLVER_MAX_QUERIES));
|
|
|
|
IP::ResolverStatus res = resolver->queue[p_id].status.get();
|
|
if (res == IP::RESOLVER_STATUS_NONE) {
|
|
ERR_PRINT("Condition status == IP::RESOLVER_STATUS_NONE");
|
|
return IP::RESOLVER_STATUS_NONE;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
IPAddress IP::get_resolve_item_address(ResolverID p_id) const {
|
|
ERR_FAIL_INDEX_V_MSG(p_id, IP::RESOLVER_MAX_QUERIES, IPAddress(), vformat("Too many concurrent DNS resolver queries (%d, but should be %d at most). Try performing less network requests at once.", p_id, IP::RESOLVER_MAX_QUERIES));
|
|
|
|
MutexLock lock(resolver->mutex);
|
|
|
|
if (resolver->queue[p_id].status.get() != IP::RESOLVER_STATUS_DONE) {
|
|
ERR_PRINT(vformat("Resolve of '%s' didn't complete yet.", resolver->queue[p_id].hostname));
|
|
return IPAddress();
|
|
}
|
|
|
|
List<IPAddress> res = resolver->queue[p_id].response;
|
|
|
|
for (const IPAddress &E : res) {
|
|
if (E.is_valid()) {
|
|
return E;
|
|
}
|
|
}
|
|
return IPAddress();
|
|
}
|
|
|
|
Array IP::get_resolve_item_addresses(ResolverID p_id) const {
|
|
ERR_FAIL_INDEX_V_MSG(p_id, IP::RESOLVER_MAX_QUERIES, Array(), vformat("Too many concurrent DNS resolver queries (%d, but should be %d at most). Try performing less network requests at once.", p_id, IP::RESOLVER_MAX_QUERIES));
|
|
MutexLock lock(resolver->mutex);
|
|
|
|
if (resolver->queue[p_id].status.get() != IP::RESOLVER_STATUS_DONE) {
|
|
ERR_PRINT(vformat("Resolve of '%s' didn't complete yet.", resolver->queue[p_id].hostname));
|
|
return Array();
|
|
}
|
|
|
|
List<IPAddress> res = resolver->queue[p_id].response;
|
|
|
|
Array result;
|
|
for (const IPAddress &E : res) {
|
|
if (E.is_valid()) {
|
|
result.push_back(String(E));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void IP::erase_resolve_item(ResolverID p_id) {
|
|
ERR_FAIL_INDEX_MSG(p_id, IP::RESOLVER_MAX_QUERIES, vformat("Too many concurrent DNS resolver queries (%d, but should be %d at most). Try performing less network requests at once.", p_id, IP::RESOLVER_MAX_QUERIES));
|
|
|
|
resolver->queue[p_id].status.set(IP::RESOLVER_STATUS_NONE);
|
|
}
|
|
|
|
void IP::clear_cache(const String &p_hostname) {
|
|
MutexLock lock(resolver->mutex);
|
|
|
|
if (p_hostname.is_empty()) {
|
|
resolver->cache.clear();
|
|
} else {
|
|
resolver->cache.erase(_IP_ResolverPrivate::get_cache_key(p_hostname, IP::TYPE_NONE));
|
|
resolver->cache.erase(_IP_ResolverPrivate::get_cache_key(p_hostname, IP::TYPE_IPV4));
|
|
resolver->cache.erase(_IP_ResolverPrivate::get_cache_key(p_hostname, IP::TYPE_IPV6));
|
|
resolver->cache.erase(_IP_ResolverPrivate::get_cache_key(p_hostname, IP::TYPE_ANY));
|
|
}
|
|
}
|
|
|
|
PackedStringArray IP::_get_local_addresses() const {
|
|
PackedStringArray addresses;
|
|
List<IPAddress> ip_addresses;
|
|
get_local_addresses(&ip_addresses);
|
|
for (const IPAddress &E : ip_addresses) {
|
|
addresses.push_back(E);
|
|
}
|
|
|
|
return addresses;
|
|
}
|
|
|
|
TypedArray<Dictionary> IP::_get_local_interfaces() const {
|
|
TypedArray<Dictionary> results;
|
|
HashMap<String, Interface_Info> interfaces;
|
|
get_local_interfaces(&interfaces);
|
|
for (KeyValue<String, Interface_Info> &E : interfaces) {
|
|
Interface_Info &c = E.value;
|
|
Dictionary rc;
|
|
rc["name"] = c.name;
|
|
rc["friendly"] = c.name_friendly;
|
|
rc["index"] = c.index;
|
|
|
|
Array ips;
|
|
for (const IPAddress &F : c.ip_addresses) {
|
|
ips.push_front(F);
|
|
}
|
|
rc["addresses"] = ips;
|
|
|
|
results.push_front(rc);
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
void IP::get_local_addresses(List<IPAddress> *r_addresses) const {
|
|
HashMap<String, Interface_Info> interfaces;
|
|
get_local_interfaces(&interfaces);
|
|
for (const KeyValue<String, Interface_Info> &E : interfaces) {
|
|
for (const IPAddress &F : E.value.ip_addresses) {
|
|
r_addresses->push_front(F);
|
|
}
|
|
}
|
|
}
|
|
|
|
void IP::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("resolve_hostname", "host", "ip_type"), &IP::resolve_hostname, DEFVAL(IP::TYPE_ANY));
|
|
ClassDB::bind_method(D_METHOD("resolve_hostname_addresses", "host", "ip_type"), &IP::resolve_hostname_addresses, DEFVAL(IP::TYPE_ANY));
|
|
ClassDB::bind_method(D_METHOD("resolve_hostname_queue_item", "host", "ip_type"), &IP::resolve_hostname_queue_item, DEFVAL(IP::TYPE_ANY));
|
|
ClassDB::bind_method(D_METHOD("get_resolve_item_status", "id"), &IP::get_resolve_item_status);
|
|
ClassDB::bind_method(D_METHOD("get_resolve_item_address", "id"), &IP::get_resolve_item_address);
|
|
ClassDB::bind_method(D_METHOD("get_resolve_item_addresses", "id"), &IP::get_resolve_item_addresses);
|
|
ClassDB::bind_method(D_METHOD("erase_resolve_item", "id"), &IP::erase_resolve_item);
|
|
ClassDB::bind_method(D_METHOD("get_local_addresses"), &IP::_get_local_addresses);
|
|
ClassDB::bind_method(D_METHOD("get_local_interfaces"), &IP::_get_local_interfaces);
|
|
ClassDB::bind_method(D_METHOD("clear_cache", "hostname"), &IP::clear_cache, DEFVAL(""));
|
|
|
|
BIND_ENUM_CONSTANT(RESOLVER_STATUS_NONE);
|
|
BIND_ENUM_CONSTANT(RESOLVER_STATUS_WAITING);
|
|
BIND_ENUM_CONSTANT(RESOLVER_STATUS_DONE);
|
|
BIND_ENUM_CONSTANT(RESOLVER_STATUS_ERROR);
|
|
|
|
BIND_CONSTANT(RESOLVER_MAX_QUERIES);
|
|
BIND_CONSTANT(RESOLVER_INVALID_ID);
|
|
|
|
BIND_ENUM_CONSTANT(TYPE_NONE);
|
|
BIND_ENUM_CONSTANT(TYPE_IPV4);
|
|
BIND_ENUM_CONSTANT(TYPE_IPV6);
|
|
BIND_ENUM_CONSTANT(TYPE_ANY);
|
|
}
|
|
|
|
IP *IP::singleton = nullptr;
|
|
|
|
IP *IP::get_singleton() {
|
|
return singleton;
|
|
}
|
|
|
|
IP *(*IP::_create)() = nullptr;
|
|
|
|
IP *IP::create() {
|
|
ERR_FAIL_COND_V_MSG(singleton, nullptr, "IP singleton already exist.");
|
|
ERR_FAIL_NULL_V(_create, nullptr);
|
|
return _create();
|
|
}
|
|
|
|
IP::IP() {
|
|
singleton = this;
|
|
resolver = memnew(_IP_ResolverPrivate);
|
|
|
|
resolver->thread_abort.clear();
|
|
resolver->thread.start(_IP_ResolverPrivate::_thread_function, resolver);
|
|
}
|
|
|
|
IP::~IP() {
|
|
resolver->thread_abort.set();
|
|
resolver->sem.post();
|
|
resolver->thread.wait_to_finish();
|
|
|
|
memdelete(resolver);
|
|
}
|