| Davide Pesavento | 248d6bd | 2014-03-09 10:24:08 +0100 | [diff] [blame] | 1 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| 2 | /** |
| 3 | * Copyright (C) 2014 Named Data Networking Project |
| 4 | * See COPYING for copyright and distribution information. |
| 5 | */ |
| 6 | |
| 7 | #include "network-interface.hpp" |
| 8 | |
| 9 | #include <boost/foreach.hpp> |
| 10 | |
| 11 | #include <arpa/inet.h> // for inet_ntop() |
| 12 | #include <netinet/in.h> // for struct sockaddr_in{,6} |
| 13 | #include <ifaddrs.h> // for getifaddrs() |
| 14 | |
| 15 | #if defined(__linux__) |
| 16 | #include <net/if_arp.h> // for ARPHRD_* constants |
| 17 | #include <netpacket/packet.h> // for struct sockaddr_ll |
| 18 | #elif defined(__APPLE__) |
| 19 | #include <net/if_dl.h> // for struct sockaddr_dl |
| 20 | #else |
| 21 | #error Platform not supported |
| 22 | #endif |
| 23 | |
| 24 | namespace nfd { |
| 25 | |
| 26 | NFD_LOG_INIT("NetworkInterfaceInfo") |
| 27 | |
| 28 | std::list< shared_ptr<NetworkInterfaceInfo> > |
| 29 | listNetworkInterfaces() |
| 30 | { |
| 31 | typedef std::map< std::string, shared_ptr<NetworkInterfaceInfo> > InterfacesMap; |
| 32 | InterfacesMap ifmap; |
| 33 | |
| 34 | ifaddrs* ifa_list; |
| 35 | if (::getifaddrs(&ifa_list) < 0) |
| 36 | throw std::runtime_error("getifaddrs() failed"); |
| 37 | |
| 38 | for (ifaddrs* ifa = ifa_list; ifa != 0; ifa = ifa->ifa_next) |
| 39 | { |
| 40 | shared_ptr<NetworkInterfaceInfo> netif; |
| 41 | std::string ifname(ifa->ifa_name); |
| 42 | InterfacesMap::iterator i = ifmap.find(ifname); |
| 43 | if (i == ifmap.end()) |
| 44 | { |
| 45 | netif = make_shared<NetworkInterfaceInfo>(); |
| 46 | netif->name = ifname; |
| 47 | netif->flags = ifa->ifa_flags; |
| 48 | ifmap[ifname] = netif; |
| 49 | } |
| 50 | else |
| 51 | { |
| 52 | netif = i->second; |
| 53 | } |
| 54 | |
| 55 | if (!ifa->ifa_addr) |
| 56 | continue; |
| 57 | |
| 58 | switch (ifa->ifa_addr->sa_family) |
| 59 | { |
| 60 | case AF_INET: { |
| 61 | const sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(ifa->ifa_addr); |
| 62 | char address[INET_ADDRSTRLEN]; |
| 63 | if (::inet_ntop(AF_INET, &sin->sin_addr, address, sizeof(address))) |
| 64 | netif->ipv4Addresses.push_back(boost::asio::ip::address_v4::from_string(address)); |
| 65 | else |
| 66 | NFD_LOG_WARN("inet_ntop() failed on " << ifname); |
| 67 | } |
| 68 | break; |
| 69 | case AF_INET6: { |
| 70 | const sockaddr_in6* sin6 = reinterpret_cast<sockaddr_in6*>(ifa->ifa_addr); |
| 71 | char address[INET6_ADDRSTRLEN]; |
| 72 | if (::inet_ntop(AF_INET6, &sin6->sin6_addr, address, sizeof(address))) |
| 73 | netif->ipv6Addresses.push_back(boost::asio::ip::address_v6::from_string(address)); |
| 74 | else |
| 75 | NFD_LOG_WARN("inet_ntop() failed on " << ifname); |
| 76 | } |
| 77 | break; |
| 78 | #if defined(__linux__) |
| 79 | case AF_PACKET: { |
| 80 | const sockaddr_ll* sll = reinterpret_cast<sockaddr_ll*>(ifa->ifa_addr); |
| 81 | netif->index = sll->sll_ifindex; |
| 82 | if (sll->sll_hatype == ARPHRD_ETHER && sll->sll_halen == ethernet::ADDR_LEN) |
| 83 | netif->etherAddress = ethernet::Address(sll->sll_addr); |
| 84 | else if (sll->sll_hatype != ARPHRD_LOOPBACK) |
| 85 | NFD_LOG_WARN("Unrecognized hardware address on " << ifname); |
| 86 | } |
| 87 | break; |
| 88 | #elif defined(__APPLE__) |
| 89 | case AF_LINK: { |
| 90 | const sockaddr_dl* sdl = reinterpret_cast<sockaddr_dl*>(ifa->ifa_addr); |
| 91 | netif->index = sdl->sdl_index; |
| 92 | netif->etherAddress = ethernet::Address(reinterpret_cast<uint8_t*>(LLADDR(sdl))); |
| 93 | } |
| 94 | break; |
| 95 | #endif |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | ::freeifaddrs(ifa_list); |
| 100 | |
| 101 | std::list< shared_ptr<NetworkInterfaceInfo> > list; |
| 102 | BOOST_FOREACH(InterfacesMap::value_type elem, ifmap) { |
| 103 | list.push_back(elem.second); |
| 104 | } |
| 105 | |
| 106 | return list; |
| 107 | } |
| 108 | |
| 109 | } // namespace nfd |