diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/arping.c | 40 |
1 files changed, 16 insertions, 24 deletions
diff --git a/networking/arping.c b/networking/arping.c index 08b2727..c63ec91 100644 --- a/networking/arping.c +++ b/networking/arping.c @@ -260,35 +260,32 @@ int arping_main(int argc, char **argv) char *target; s = xsocket(PF_PACKET, SOCK_DGRAM, 0); - ifindex = errno; // Drop suid root privileges xsetuid(getuid()); { unsigned long opt; - char *_count, *_timeout, *_device; + char *_count, *_timeout; /* Dad also sets quit_on_reply. * Advert also sets unsolicited. */ bb_opt_complementally = "Df:AU"; opt = bb_getopt_ulflags(argc, argv, "DUAqfbc:w:i:s:", - &_count, &_timeout, &_device); - cfg |= opt & 63; /* set respective flags */ - if (opt & 64) /* count */ + &_count, &_timeout, &device, &source); + cfg |= opt & 0x3f; /* set respective flags */ + if (opt & 0x40) /* -c: count */ count = atoi(_count); - if (opt & 128) /* timeout */ + if (opt & 0x80) /* -w: timeout */ timeout = atoi(_timeout); - if (opt & 256) { /* interface */ - if (strlen(_device) > IF_NAMESIZE) { - bb_error_msg_and_die("Interface name `%s' must be less than %d", - _device, IF_NAMESIZE); + if (opt & 0x100) { /* -i: interface */ + if (strlen(device) > IF_NAMESIZE) { + bb_error_msg_and_die("interface name '%s' is too long", + device); } - device = _device; } - if (opt & 512) /* source */ - source = optarg; + //if (opt & 0x200) /* -s: source */ } argc -= optind; argv += optind; @@ -298,11 +295,6 @@ int arping_main(int argc, char **argv) target = *argv; - - if (s < 0) { - bb_default_error_retval = ifindex; - bb_perror_msg_and_die("socket"); - } bb_default_error_retval = 2; { @@ -311,7 +303,7 @@ int arping_main(int argc, char **argv) memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, device, IFNAMSIZ - 1); if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) { - bb_error_msg_and_die("Interface %s not found", device); + bb_error_msg_and_die("interface %s not found", device); } ifindex = ifr.ifr_ifindex; @@ -319,10 +311,10 @@ int arping_main(int argc, char **argv) bb_error_msg_and_die("SIOCGIFFLAGS"); } if (!(ifr.ifr_flags & IFF_UP)) { - bb_error_msg_and_die("Interface %s is down", device); + bb_error_msg_and_die("interface %s is down", device); } if (ifr.ifr_flags & (IFF_NOARP | IFF_LOOPBACK)) { - bb_error_msg("Interface %s is not ARPable", device); + bb_error_msg("interface %s is not ARPable", device); exit(cfg&dad ? 0 : 2); } } @@ -352,7 +344,7 @@ int arping_main(int argc, char **argv) if (setsockopt (probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device) + 1) == -1) - bb_error_msg("WARNING: interface %s is ignored", device); + bb_error_msg("warning: interface %s is ignored", device); } memset(&saddr, 0, sizeof(saddr)); saddr.sin_family = AF_INET; @@ -371,7 +363,7 @@ int arping_main(int argc, char **argv) if (setsockopt (probe_fd, SOL_SOCKET, SO_DONTROUTE, (char *) &on, sizeof(on)) == -1) - bb_perror_msg("WARNING: setsockopt(SO_DONTROUTE)"); + bb_perror_msg("warning: setsockopt(SO_DONTROUTE)"); if (connect(probe_fd, (struct sockaddr *) &saddr, sizeof(saddr)) == -1) { bb_error_msg_and_die("connect"); @@ -440,7 +432,7 @@ int arping_main(int argc, char **argv) if ((cc = recvfrom(s, packet, 4096, 0, (struct sockaddr *) &from, &alen)) < 0) { - perror("recvfrom"); + bb_perror_msg("recvfrom"); continue; } sigemptyset(&sset); |