New file |
| | |
| | | /** |
| | | * @file network_id.c |
| | | * @date 16 Sep 2014 |
| | | * @brief File containing network interface detection functions for Linux. |
| | | * |
| | | * The only public function of this module is #getAdapterInfos(OsAdapterInfo *, |
| | | * size_t *), other functions are either static or inline. |
| | | * |
| | | * Responsibility of this module is to fill OsAdapterInfo structures, in a |
| | | * predictable way (skip "lo" interfaces, |
| | | * @TODO: place physical interfaces in front in a repeatable order: "eth", "wlan","ib" |
| | | * and other interfaces later, first the one with a a specified mac address, then |
| | | * the ones with only an ip.) |
| | | */ |
| | | |
| | | #ifndef _GNU_SOURCE |
| | | #define _GNU_SOURCE /* To get defns of NI_MAXSERV and NI_MAXHOST */ |
| | | #endif |
| | | #include <arpa/inet.h> |
| | | #include <sys/socket.h> |
| | | #include <net/if.h> |
| | | #include <netdb.h> |
| | | #include <ifaddrs.h> |
| | | #include <linux/if_link.h> |
| | | #include <netpacket/packet.h> |
| | | #include <stdio.h> |
| | | #include <unordered_map> |
| | | #include <string.h> |
| | | #include <memory.h> |
| | | |
| | | #include "../../base/StringUtils.h" |
| | | #include "../../base/logger.h" |
| | | #include "../network.hpp" |
| | | |
| | | namespace license { |
| | | namespace os { |
| | | using namespace std; |
| | | |
| | | |
| | | /** |
| | | * |
| | | * @param adapterInfos |
| | | * @param adapter_info_size |
| | | * @return |
| | | */ |
| | | FUNCTION_RETURN getAdapterInfos(vector<OsAdapterInfo> &adapterInfos) { |
| | | unordered_map<string, OsAdapterInfo> adapterByName; |
| | | |
| | | FUNCTION_RETURN f_return = FUNC_RET_OK; |
| | | struct ifaddrs *ifaddr, *ifa; |
| | | int family, n = 0; |
| | | unsigned int if_num, if_max; |
| | | |
| | | if (getifaddrs(&ifaddr) == -1) { |
| | | LOG_WARN("getifaddrs failed == -1"); |
| | | return FUNC_RET_ERROR; |
| | | } |
| | | |
| | | for (ifa = ifaddr, n = 0, if_num = 0; ifa != NULL; ifa = ifa->ifa_next, n++) { |
| | | if (ifa->ifa_addr == NULL || (ifa->ifa_flags & IFF_LOOPBACK) != 0) { |
| | | continue; |
| | | } |
| | | string if_name(ifa->ifa_name, mstrnlen_s(ifa->ifa_name, NI_MAXHOST)); |
| | | // if_name_position = ifname_position(ifnames, ifa->ifa_name, if_num); |
| | | // interface name not seen en advance |
| | | OsAdapterInfo *currentAdapter; |
| | | // FIXME not working |
| | | if (adapterByName.find(if_name) == adapterByName.end()) { |
| | | OsAdapterInfo newAdapter; |
| | | memset(&newAdapter, 0, sizeof(OsAdapterInfo)); |
| | | strncpy(&newAdapter.description[0], ifa->ifa_name, NI_MAXHOST); |
| | | adapterByName[if_name] = newAdapter; |
| | | } |
| | | auto it = adapterByName.find(if_name); |
| | | currentAdapter = &it->second; |
| | | family = ifa->ifa_addr->sa_family; |
| | | /* Display interface name and family (including symbolic |
| | | form of the latter for the common families) */ |
| | | #ifdef _DEBUG |
| | | printf("%-8s %s (%d)\n", ifa->ifa_name, |
| | | (family == AF_PACKET) ? "AF_PACKET" |
| | | : (family == AF_INET) ? "AF_INET" : (family == AF_INET6) ? "AF_INET6" : "???", |
| | | family); |
| | | #endif |
| | | /* For an AF_INET* interface address, display the address |
| | | * || family == AF_INET6*/ |
| | | if (family == AF_INET) { |
| | | struct sockaddr_in *s1 = (struct sockaddr_in *)ifa->ifa_addr; |
| | | in_addr_t iaddr = s1->sin_addr.s_addr; |
| | | currentAdapter->ipv4_address[0] = (iaddr & 0x000000ff); |
| | | currentAdapter->ipv4_address[1] = (iaddr & 0x0000ff00) >> 8; |
| | | currentAdapter->ipv4_address[2] = (iaddr & 0x00ff0000) >> 16; |
| | | currentAdapter->ipv4_address[3] = (iaddr & 0xff000000) >> 24; |
| | | |
| | | } else if (family == AF_PACKET && ifa->ifa_data != NULL) { |
| | | struct sockaddr_ll *s1 = (struct sockaddr_ll *)ifa->ifa_addr; |
| | | int i; |
| | | for (i = 0; i < 6; i++) { |
| | | currentAdapter->mac_address[i] = s1->sll_addr[i]; |
| | | #ifdef _DEBUG |
| | | printf("%02x:", s1->sll_addr[i]); |
| | | #endif |
| | | } |
| | | #ifdef _DEBUG |
| | | printf("\t %s\n", ifa->ifa_name); |
| | | #endif |
| | | } |
| | | } |
| | | freeifaddrs(ifaddr); |
| | | |
| | | // FIXME sort by eth , enps, wlan |
| | | if (adapterByName.size() == 0) { |
| | | f_return = FUNC_RET_NOT_AVAIL; |
| | | } else { |
| | | f_return = FUNC_RET_OK; |
| | | adapterInfos.reserve(adapterByName.size()); |
| | | for (auto &it : adapterByName) { |
| | | adapterInfos.push_back(it.second); |
| | | } |
| | | } |
| | | return f_return; |
| | | } |
| | | |
| | | } // namespace os |
| | | } // namespace license |