Add classes Dns, DnsRecord, IDnsListener.
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XMRig
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3094741c64
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af3655c27e
10 changed files with 514 additions and 131 deletions
158
src/base/net/dns/Dns.cpp
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158
src/base/net/dns/Dns.cpp
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/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "base/kernel/interfaces/IDnsListener.h"
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#include "base/net/dns/Dns.h"
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#include "base/tools/Handle.h"
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namespace xmrig {
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Storage<Dns> Dns::m_storage;
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static const DnsRecord defaultRecord;
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}
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xmrig::Dns::Dns(IDnsListener *listener) :
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m_hints(),
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m_listener(listener),
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m_status(0)
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{
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m_key = m_storage.add(this);
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m_resolver = new uv_getaddrinfo_t;
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m_resolver->data = m_storage.ptr(m_key);
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m_hints.ai_family = AF_UNSPEC;
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m_hints.ai_socktype = SOCK_STREAM;
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m_hints.ai_protocol = IPPROTO_TCP;
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}
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xmrig::Dns::~Dns()
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{
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Handle::close(m_resolver);
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m_storage.release(m_key);
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}
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bool xmrig::Dns::resolve(const String &host)
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{
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if (m_host != host) {
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m_host = host;
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clear();
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}
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m_status = uv_getaddrinfo(uv_default_loop(), m_resolver, Dns::onResolved, m_host.data(), nullptr, &m_hints);
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return m_status == 0;
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}
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const char *xmrig::Dns::error() const
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{
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return uv_strerror(m_status);
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}
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const xmrig::DnsRecord &xmrig::Dns::get(DnsRecord::Type prefered) const
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{
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if (count() == 0) {
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return defaultRecord;
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}
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const size_t ipv4 = m_ipv4.size();
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const size_t ipv6 = m_ipv6.size();
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if (ipv6 && (prefered == DnsRecord::AAAA || !ipv4)) {
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return m_ipv6[ipv6 == 1 ? 0 : static_cast<size_t>(rand()) % ipv6];
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}
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if (ipv4) {
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return m_ipv4[ipv4 == 1 ? 0 : static_cast<size_t>(rand()) % ipv4];
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}
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return defaultRecord;
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}
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size_t xmrig::Dns::count(DnsRecord::Type type) const
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{
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if (type == DnsRecord::A) {
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return m_ipv4.size();
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}
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if (type == DnsRecord::AAAA) {
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return m_ipv6.size();
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}
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return m_ipv4.size() + m_ipv6.size();
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}
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void xmrig::Dns::clear()
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{
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m_ipv4.clear();
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m_ipv6.clear();
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}
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void xmrig::Dns::onResolved(int status, addrinfo *res)
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{
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m_status = status;
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if (m_status < 0) {
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return m_listener->onResolved(*this, status);
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}
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clear();
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addrinfo *ptr = res;
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while (ptr != nullptr) {
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if (ptr->ai_family == AF_INET) {
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m_ipv4.push_back(ptr);
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}
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if (ptr->ai_family == AF_INET6) {
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m_ipv6.push_back(ptr);
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}
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ptr = ptr->ai_next;
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}
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m_listener->onResolved(*this, status);
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}
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void xmrig::Dns::onResolved(uv_getaddrinfo_t *req, int status, addrinfo *res)
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{
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Dns *dns = m_storage.get(req->data);
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if (dns) {
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dns->onResolved(status, res);
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}
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uv_freeaddrinfo(res);
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}
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80
src/base/net/dns/Dns.h
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80
src/base/net/dns/Dns.h
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@ -0,0 +1,80 @@
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/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef XMRIG_DNS_H
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#define XMRIG_DNS_H
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#include <vector>
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#include <uv.h>
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#include "base/net/dns/DnsRecord.h"
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#include "base/net/tools/Storage.h"
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#include "base/tools/String.h"
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namespace xmrig {
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class IDnsListener;
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class Dns
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{
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public:
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Dns(IDnsListener *listener);
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~Dns();
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inline bool isEmpty() const { return m_ipv4.empty() && m_ipv6.empty(); }
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inline int status() const { return m_status; }
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bool resolve(const String &host);
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const char *error() const;
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const DnsRecord &get(DnsRecord::Type prefered = DnsRecord::A) const;
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size_t count(DnsRecord::Type type = DnsRecord::Unknown) const;
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private:
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void clear();
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void onResolved(int status, addrinfo *res);
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static void onResolved(uv_getaddrinfo_t *req, int status, addrinfo *res);
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addrinfo m_hints;
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IDnsListener *m_listener;
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int m_status;
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std::vector<DnsRecord> m_ipv4;
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std::vector<DnsRecord> m_ipv6;
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String m_host;
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uintptr_t m_key;
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uv_getaddrinfo_t *m_resolver;
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static Storage<Dns> m_storage;
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};
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} /* namespace xmrig */
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#endif /* XMRIG_DNS_H */
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66
src/base/net/dns/DnsRecord.cpp
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66
src/base/net/dns/DnsRecord.cpp
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@ -0,0 +1,66 @@
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/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <uv.h>
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#include "base/net/dns/DnsRecord.h"
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xmrig::DnsRecord::DnsRecord(const addrinfo *addr) :
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m_type(addr->ai_family == AF_INET6 ? AAAA : A)
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{
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char *buf = nullptr;
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if (m_type == AAAA) {
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buf = new char[45]();
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uv_ip6_name(reinterpret_cast<sockaddr_in6*>(addr->ai_addr), buf, 45);
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}
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else {
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buf = new char[16]();
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uv_ip4_name(reinterpret_cast<sockaddr_in*>(addr->ai_addr), buf, 16);
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}
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m_ip = buf;
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}
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sockaddr *xmrig::DnsRecord::addr(uint16_t port) const
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{
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if (m_type == A) {
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sockaddr_in *addr = new sockaddr_in();
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uv_ip4_addr(m_ip.data(), port, addr);
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return reinterpret_cast<sockaddr *>(addr);
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}
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else if (m_type == AAAA) {
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sockaddr_in6 *addr = new sockaddr_in6();
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uv_ip6_addr(m_ip.data(), port, addr);
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return reinterpret_cast<sockaddr *>(addr);
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}
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return nullptr;
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}
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66
src/base/net/dns/DnsRecord.h
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66
src/base/net/dns/DnsRecord.h
Normal file
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@ -0,0 +1,66 @@
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/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef XMRIG_DNSRECORD_H
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#define XMRIG_DNSRECORD_H
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struct addrinfo;
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struct sockaddr;
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#include "base/tools/String.h"
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namespace xmrig {
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class DnsRecord
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{
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public:
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enum Type {
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Unknown,
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A,
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AAAA
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};
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inline DnsRecord() : m_type(Unknown) {}
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DnsRecord(const addrinfo *addr);
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sockaddr *addr(uint16_t port = 0) const;
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inline bool isValid() const { return m_type != Unknown; }
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inline const String &ip() const { return m_ip; }
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inline Type type() const { return m_type; }
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private:
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Type m_type;
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String m_ip;
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};
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} /* namespace xmrig */
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#endif /* XMRIG_DNSRECORD_H */
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