forked from osmocom/wireshark
172 lines
3.6 KiB
C
172 lines
3.6 KiB
C
/* interface.c
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* Utility functions to get infos from interfaces
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*
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* Copyright 2016, Dario Lombardo
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include "interface.h"
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#include <string.h>
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#include <wsutil/inet_addr.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_IFADDRS_H
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#include <ifaddrs.h>
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#endif
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#ifdef _WIN32
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#include <winsock2.h>
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#include <iphlpapi.h>
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#include <Ws2tcpip.h>
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#endif
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#define WORKING_BUFFER_SIZE 15000
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#ifdef HAVE_GETIFADDRS
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static GSList* local_interfaces_to_list_nix(void)
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{
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GSList *interfaces = NULL;
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struct ifaddrs *ifap;
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struct ifaddrs *ifa;
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int family;
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char ip[WS_INET6_ADDRSTRLEN];
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if (getifaddrs(&ifap)) {
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goto end;
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}
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for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
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if (ifa->ifa_addr == NULL)
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continue;
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family = ifa->ifa_addr->sa_family;
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memset(ip, 0x0, WS_INET6_ADDRSTRLEN);
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switch (family) {
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case AF_INET:
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{
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struct sockaddr_in *addr4 = (struct sockaddr_in *)ifa->ifa_addr;
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ws_inet_ntop4(&addr4->sin_addr, ip, sizeof(ip));
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break;
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}
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case AF_INET6:
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{
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)ifa->ifa_addr;
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ws_inet_ntop6(&addr6->sin6_addr, ip, sizeof(ip));
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break;
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}
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default:
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break;
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}
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/* skip loopback addresses */
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if (!g_strcmp0(ip, "127.0.0.1") || !g_strcmp0(ip, "::1"))
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continue;
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if (*ip) {
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interfaces = g_slist_prepend(interfaces, g_strdup(ip));
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}
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}
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freeifaddrs(ifap);
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end:
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return interfaces;
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}
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#endif /* HAVE_GETIFADDRS */
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#ifdef _WIN32
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static GSList* local_interfaces_to_list_win(void)
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{
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GSList *interfaces = NULL;
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PIP_ADAPTER_ADDRESSES pAddresses = NULL;
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ULONG outBufLen = WORKING_BUFFER_SIZE;
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ULONG family = AF_UNSPEC;
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PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL;
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PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL;
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char ip[100];
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guint iplen = 100;
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pAddresses = (IP_ADAPTER_ADDRESSES *)g_malloc0(outBufLen);
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if (pAddresses == NULL)
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return NULL;
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if (GetAdaptersAddresses(family, 0, NULL, pAddresses, &outBufLen) != NO_ERROR)
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goto end;
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pCurrAddresses = pAddresses;
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while (pCurrAddresses) {
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for (pUnicast = pCurrAddresses->FirstUnicastAddress; pUnicast != NULL; pUnicast = pUnicast->Next) {
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if (pUnicast->Address.lpSockaddr->sa_family == AF_INET) {
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SOCKADDR_IN* sa_in = (SOCKADDR_IN *)pUnicast->Address.lpSockaddr;
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ws_inet_ntop4(&(sa_in->sin_addr), ip, iplen);
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if (!g_strcmp0(ip, "127.0.0.1"))
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continue;
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if (*ip)
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interfaces = g_slist_prepend(interfaces, g_strdup(ip));
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}
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if (pUnicast->Address.lpSockaddr->sa_family == AF_INET6) {
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SOCKADDR_IN6* sa_in6 = (SOCKADDR_IN6 *)pUnicast->Address.lpSockaddr;
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ws_inet_ntop6(&(sa_in6->sin6_addr), ip, iplen);
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if (!g_strcmp0(ip, "::1"))
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continue;
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if (*ip)
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interfaces = g_slist_prepend(interfaces, g_strdup(ip));
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}
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}
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pCurrAddresses = pCurrAddresses->Next;
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}
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end:
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g_free(pAddresses);
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return interfaces;
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}
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#endif /* _WIN32 */
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GSList* local_interfaces_to_list(void)
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{
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#if defined(_WIN32)
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return local_interfaces_to_list_win();
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#elif defined(HAVE_GETIFADDRS)
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return local_interfaces_to_list_nix();
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#else
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return NULL;
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#endif
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 noexpandtab:
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* :indentSize=4:tabSize=8:noTabs=false:
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*/
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