diff options
Diffstat (limited to 'wsutil/interface.c')
| -rw-r--r-- | wsutil/interface.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/wsutil/interface.c b/wsutil/interface.c new file mode 100644 index 00000000..0fc990d4 --- /dev/null +++ b/wsutil/interface.c @@ -0,0 +1,171 @@ +/* interface.c + * Utility functions to get infos from interfaces + * + * Copyright 2016, Dario Lombardo + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include "interface.h" + +#include <string.h> +#include <wsutil/inet_addr.h> + +#include <sys/types.h> + +#ifdef HAVE_SYS_SOCKET_H + #include <sys/socket.h> +#endif + +#ifdef HAVE_NETINET_IN_H + #include <netinet/in.h> +#endif + +#ifdef HAVE_ARPA_INET_H + #include <arpa/inet.h> +#endif + +#ifdef HAVE_IFADDRS_H + #include <ifaddrs.h> +#endif + +#ifdef _WIN32 + #include <winsock2.h> + #include <iphlpapi.h> + #include <ws2tcpip.h> +#endif + +#define WORKING_BUFFER_SIZE 15000 + +#ifdef HAVE_GETIFADDRS +static GSList* local_interfaces_to_list_nix(void) +{ + GSList *interfaces = NULL; + struct ifaddrs *ifap; + struct ifaddrs *ifa; + int family; + char ip[WS_INET6_ADDRSTRLEN]; + + if (getifaddrs(&ifap)) { + goto end; + } + + for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) { + if (ifa->ifa_addr == NULL) + continue; + + family = ifa->ifa_addr->sa_family; + + memset(ip, 0x0, WS_INET6_ADDRSTRLEN); + + switch (family) { + case AF_INET: + { + struct sockaddr_in *addr4 = (struct sockaddr_in *)ifa->ifa_addr; + ws_inet_ntop4(&addr4->sin_addr, ip, sizeof(ip)); + break; + } + + case AF_INET6: + { + struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)ifa->ifa_addr; + ws_inet_ntop6(&addr6->sin6_addr, ip, sizeof(ip)); + break; + } + + default: + break; + } + + /* skip loopback addresses */ + if (!g_strcmp0(ip, "127.0.0.1") || !g_strcmp0(ip, "::1")) + continue; + + if (*ip) { + interfaces = g_slist_prepend(interfaces, g_strdup(ip)); + } + } + freeifaddrs(ifap); +end: + return interfaces; +} +#endif /* HAVE_GETIFADDRS */ + +#ifdef _WIN32 +static GSList* local_interfaces_to_list_win(void) +{ + GSList *interfaces = NULL; + PIP_ADAPTER_ADDRESSES pAddresses = NULL; + ULONG outBufLen = WORKING_BUFFER_SIZE; + ULONG family = AF_UNSPEC; + PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL; + PIP_ADAPTER_UNICAST_ADDRESS pUnicast = NULL; + char ip[100]; + unsigned iplen = 100; + + pAddresses = (IP_ADAPTER_ADDRESSES *)g_malloc0(outBufLen); + if (pAddresses == NULL) + return NULL; + + if (GetAdaptersAddresses(family, 0, NULL, pAddresses, &outBufLen) != NO_ERROR) + goto end; + + pCurrAddresses = pAddresses; + while (pCurrAddresses) { + + for (pUnicast = pCurrAddresses->FirstUnicastAddress; pUnicast != NULL; pUnicast = pUnicast->Next) { + if (pUnicast->Address.lpSockaddr->sa_family == AF_INET) { + SOCKADDR_IN* sa_in = (SOCKADDR_IN *)pUnicast->Address.lpSockaddr; + ws_inet_ntop4(&(sa_in->sin_addr), ip, iplen); + if (!g_strcmp0(ip, "127.0.0.1")) + continue; + if (*ip) + interfaces = g_slist_prepend(interfaces, g_strdup(ip)); + } + if (pUnicast->Address.lpSockaddr->sa_family == AF_INET6) { + SOCKADDR_IN6* sa_in6 = (SOCKADDR_IN6 *)pUnicast->Address.lpSockaddr; + ws_inet_ntop6(&(sa_in6->sin6_addr), ip, iplen); + if (!g_strcmp0(ip, "::1")) + continue; + if (*ip) + interfaces = g_slist_prepend(interfaces, g_strdup(ip)); + } + } + pCurrAddresses = pCurrAddresses->Next; + } +end: + g_free(pAddresses); + + return interfaces; +} +#endif /* _WIN32 */ + +GSList* local_interfaces_to_list(void) +{ +#if defined(_WIN32) + return local_interfaces_to_list_win(); +#elif defined(HAVE_GETIFADDRS) + return local_interfaces_to_list_nix(); +#else + return NULL; +#endif +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: t + * End: + * + * vi: set shiftwidth=4 tabstop=8 noexpandtab: + * :indentSize=4:tabSize=8:noTabs=false: + */ |