0f8b9e714e
- aligned state handling with avahi-browse tool: browser is started in client callback - browsing is limited to IPv4 services discovered on the specific daemon network interface only Additional minor changes.
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
//
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// interface.cpp
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//
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// Copyright (c) 2019 2020 Andrea Bondavalli. All rights reserved.
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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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// 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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// MIT License
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//
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#include <utility>
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#include <boost/asio.hpp>
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#include "log.hpp"
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using namespace boost::asio;
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using namespace boost::asio::ip;
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std::pair<uint32_t, std::string> get_interface_ip(
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const std::string& interface_name) {
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int fd = socket(AF_INET, SOCK_DGRAM, 0);
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if (fd < 0) {
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve IP address for interface " << interface_name;
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return std::make_pair(0, "");
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}
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struct ifreq ifr;
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ifr.ifr_addr.sa_family = AF_INET;
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strncpy(ifr.ifr_name, interface_name.c_str(), IFNAMSIZ - 1);
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if (ioctl(fd, SIOCGIFADDR, &ifr) < 0) {
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close(fd);
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve IP address for interface " << interface_name;
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return std::make_pair(0, "");
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}
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close(fd);
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struct sockaddr_in* sockaddr =
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reinterpret_cast<struct sockaddr_in*>(&ifr.ifr_addr);
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uint32_t addr = ntohl(sockaddr->sin_addr.s_addr);
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std::string str_addr(ip::address_v4(addr).to_string());
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/*BOOST_LOG_TRIVIAL(debug) << "interface " << interface_name
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<< " IP address " << str_addr;*/
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return std::make_pair(addr, str_addr);
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}
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std::pair<std::array<uint8_t, 6>, std::string> get_interface_mac(
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const std::string& interface_name) {
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std::array<uint8_t, 6> mac{0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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int fd = socket(AF_INET, SOCK_DGRAM, 0);
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if (fd < 0) {
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve MAC address for interface " << interface_name;
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return std::make_pair(mac, "");
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}
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struct ifreq ifr;
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ifr.ifr_addr.sa_family = AF_INET;
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strncpy(ifr.ifr_name, interface_name.c_str(), IFNAMSIZ - 1);
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if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
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close(fd);
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve MAC address for interface " << interface_name;
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return std::make_pair(mac, "");
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}
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close(fd);
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uint8_t* sa = reinterpret_cast<uint8_t*>(ifr.ifr_hwaddr.sa_data);
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std::copy(sa, sa + 8, std::begin(mac));
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char str_mac[18];
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sprintf(str_mac, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
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mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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/*BOOST_LOG_TRIVIAL(debug) << "interface " << interface_name
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<< " MAC address " << str_mac;*/
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return std::make_pair(mac, str_mac);
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}
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int get_interface_index(const std::string& interface_name) {
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int fd = socket(AF_INET, SOCK_DGRAM, 0);
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if (fd < 0) {
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve index for interface " << interface_name;
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return -1;
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}
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struct ifreq ifr;
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ifr.ifr_addr.sa_family = AF_INET;
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strncpy(ifr.ifr_name, interface_name.c_str(), IFNAMSIZ - 1);
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if (ioctl(fd, SIOCGIFADDR, &ifr) < 0) {
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close(fd);
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BOOST_LOG_TRIVIAL(error)
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<< "Cannot retrieve index for interface " << interface_name;
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return -1;
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}
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close(fd);
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/*BOOST_LOG_TRIVIAL(debug) << "interface " << interface_name
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<< " index " << ifr.ifr_ifindex;*/
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return ifr.ifr_ifindex;
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}
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