mirror of
https://github.com/xmrig/xmrig.git
synced 2025-12-06 23:52:38 -05:00
151 lines
3.2 KiB
C++
151 lines
3.2 KiB
C++
/* XMRig
|
|
* Copyright (c) 2018-2025 SChernykh <https://github.com/SChernykh>
|
|
* Copyright (c) 2016-2025 XMRig <https://github.com/xmrig>, <support@xmrig.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <uv.h>
|
|
|
|
#include "base/net/dns/DnsUvBackend.h"
|
|
#include "base/kernel/interfaces/IDnsListener.h"
|
|
#include "base/net/dns/DnsConfig.h"
|
|
#include "base/tools/Chrono.h"
|
|
|
|
|
|
namespace xmrig {
|
|
|
|
|
|
static Storage<DnsUvBackend> *storage = nullptr;
|
|
|
|
|
|
Storage<DnsUvBackend> &DnsUvBackend::getStorage()
|
|
{
|
|
if (storage == nullptr) {
|
|
storage = new Storage<DnsUvBackend>();
|
|
}
|
|
|
|
return *storage;
|
|
}
|
|
|
|
|
|
static addrinfo hints{};
|
|
|
|
|
|
} // namespace xmrig
|
|
|
|
|
|
xmrig::DnsUvBackend::DnsUvBackend()
|
|
{
|
|
if (!hints.ai_protocol) {
|
|
hints.ai_family = AF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
}
|
|
|
|
m_key = getStorage().add(this);
|
|
}
|
|
|
|
|
|
xmrig::DnsUvBackend::~DnsUvBackend()
|
|
{
|
|
assert(storage);
|
|
|
|
storage->release(m_key);
|
|
|
|
if (storage->isEmpty()) {
|
|
delete storage;
|
|
storage = nullptr;
|
|
}
|
|
}
|
|
|
|
|
|
void xmrig::DnsUvBackend::resolve(const String &host, const std::weak_ptr<IDnsListener> &listener, const DnsConfig &config)
|
|
{
|
|
m_queue.emplace_back(listener);
|
|
|
|
if (Chrono::currentMSecsSinceEpoch() - m_ts <= config.ttl()) {
|
|
return notify();
|
|
}
|
|
|
|
if (m_req) {
|
|
return;
|
|
}
|
|
|
|
m_ai_family = config.ai_family();
|
|
|
|
if (!resolve(host)) {
|
|
notify();
|
|
}
|
|
}
|
|
|
|
|
|
bool xmrig::DnsUvBackend::resolve(const String &host)
|
|
{
|
|
m_req = std::make_shared<uv_getaddrinfo_t>();
|
|
m_req->data = getStorage().ptr(m_key);
|
|
|
|
m_status = uv_getaddrinfo(uv_default_loop(), m_req.get(), DnsUvBackend::onResolved, host.data(), nullptr, &hints);
|
|
|
|
return m_status == 0;
|
|
}
|
|
|
|
|
|
void xmrig::DnsUvBackend::notify()
|
|
{
|
|
const char *error = m_status < 0 ? uv_strerror(m_status) : nullptr;
|
|
|
|
for (const auto &l : m_queue) {
|
|
auto listener = l.lock();
|
|
if (listener) {
|
|
listener->onResolved(m_records, m_status, error);
|
|
}
|
|
}
|
|
|
|
m_queue.clear();
|
|
m_req.reset();
|
|
}
|
|
|
|
|
|
void xmrig::DnsUvBackend::onResolved(int status, addrinfo *res)
|
|
{
|
|
m_status = status;
|
|
m_ts = Chrono::currentMSecsSinceEpoch();
|
|
|
|
if (m_status < 0) {
|
|
m_records = {};
|
|
|
|
return notify();
|
|
}
|
|
|
|
m_records = { res, m_ai_family };
|
|
|
|
if (m_records.isEmpty()) {
|
|
m_status = UV_EAI_NONAME;
|
|
}
|
|
|
|
notify();
|
|
}
|
|
|
|
|
|
void xmrig::DnsUvBackend::onResolved(uv_getaddrinfo_t *req, int status, addrinfo *res)
|
|
{
|
|
auto *backend = getStorage().get(req->data);
|
|
if (backend) {
|
|
backend->onResolved(status, res);
|
|
}
|
|
|
|
uv_freeaddrinfo(res);
|
|
}
|