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Added getifaddrs() and native BSD versions of findif.
Native BSD version based off of: http://www.freebsd.org/cgi/query-pr.cgi?pr=122333
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378 additions
and 15 deletions.
- +20 −12 configure.ac
- +3 −2 src/arping.c
- +1 −0 src/arping.h
- +4 −1 src/{findif_bsd.c → findif_bsdroute.c}
- +107 −0 src/findif_getifaddrs.c
- +243 −0 src/findif_sysctl.c
| @@ -0,0 +1,107 @@ | ||
| /* arping/src/findif_getifaddrs.c | ||
| * | ||
| * Copyright (C) 2000-2011 Thomas Habets <thomas@habets.se> | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public | ||
| * License as published by the Free Software Foundation; either | ||
| * version 2 of the License, or (at your option) any later version. | ||
| * | ||
| * This library is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| * General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along | ||
| * with this program; if not, write to the Free Software Foundation, Inc., | ||
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| */ | ||
| /** | ||
| * Most modern systems should have getifaddrs(). | ||
| */ | ||
| #if HAVE_CONFIG_H | ||
| #include "config.h" | ||
| #endif | ||
| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <errno.h> | ||
| #include <sys/types.h> | ||
| #include <sys/socket.h> | ||
| #include <sys/ioctl.h> | ||
| #include <ifaddrs.h> | ||
| #include <net/if.h> | ||
| #include <netinet/in.h> | ||
| #include "arping.h" | ||
| const char * | ||
| arping_lookupdev(const char *ifname_unused, | ||
| uint32_t srcip, | ||
| uint32_t dstip, | ||
| char *ebuf) | ||
| { | ||
| struct ifaddrs *ifa = NULL; | ||
| struct ifaddrs *cur; | ||
| const char *ret; | ||
| int match_count = 0; /* Matching interfaces */ | ||
| /* best match */ | ||
| in_addr_t best_mask = 0; | ||
| in_addr_t best_addr; | ||
| /* Results */ | ||
| static char ifname[IFNAMSIZ]; | ||
| ifname[0] = 0; | ||
| if (getifaddrs(&ifa)) { | ||
| if (verbose) { | ||
| printf("getifaddrs(): %s\n", strerror(errno)); | ||
| } | ||
| goto failed; | ||
| } | ||
| for (cur = ifa; cur; cur = cur->ifa_next) { | ||
| in_addr_t addr, mask; | ||
| if (cur->ifa_addr->sa_family != AF_INET) { | ||
| continue; | ||
| } | ||
| if (cur->ifa_flags & (IFF_LOOPBACK|IFF_POINTOPOINT)) { | ||
| continue; | ||
| } | ||
| addr =((struct sockaddr_in*)cur->ifa_addr)->sin_addr.s_addr; | ||
| mask =((struct sockaddr_in*)cur->ifa_netmask)->sin_addr.s_addr; | ||
| if ((addr & mask) != (dstip & mask)) { | ||
| continue; | ||
| } | ||
| if (ntohl(mask) > ntohl(best_mask)) { | ||
| memset(ifname, 0, sizeof(ifname)); | ||
| strncpy(ifname, cur->ifa_name, sizeof(ifname)-1); | ||
| best_addr = addr; | ||
| best_mask = mask; | ||
| } | ||
| } | ||
| if (!ifname[0]) { | ||
| if (verbose) { | ||
| printf("Failed to find iface using getifaddrs().\n"); | ||
| } | ||
| goto failed; | ||
| } | ||
| ret = ifname; | ||
| out: | ||
| if (ifa) { | ||
| freeifaddrs(ifa); | ||
| } | ||
| return ret; | ||
| failed: | ||
| ret = arping_lookupdev_default(ifname_unused, srcip, dstip, ebuf); | ||
| goto out; | ||
| } | ||
| /* ---- Emacs Variables ---- | ||
| * Local Variables: | ||
| * c-basic-offset: 8 | ||
| * indent-tabs-mode: nil | ||
| * End: | ||
| */ |
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