diff options
| -rw-r--r-- | networking/traceroute.c | 44 |
1 files changed, 18 insertions, 26 deletions
diff --git a/networking/traceroute.c b/networking/traceroute.c index 18a8c25..0555c9b 100644 --- a/networking/traceroute.c +++ b/networking/traceroute.c @@ -472,16 +472,14 @@ send_probe(int seq, int ttl) } else #endif { -#if defined(IP_TTL) - if (setsockopt(sndsock, IPPROTO_IP, IP_TTL, - (char *)&ttl, sizeof(ttl)) < 0) { +#if defined IP_TTL + res = setsockopt(sndsock, IPPROTO_IP, IP_TTL, &ttl, sizeof(ttl)); + if (res < 0) bb_perror_msg_and_die("setsockopt ttl %d", ttl); - } #endif + out = outicmp; len = packlen - sizeof(*outip); - if (option_mask32 & OPT_USE_ICMP) - out = outicmp; - else { + if (!(option_mask32 & OPT_USE_ICMP)) { out = outdata; len -= sizeof(*outudp); set_nport(dest_lsa, htons(port + seq)); @@ -489,9 +487,8 @@ send_probe(int seq, int ttl) } res = xsendto(sndsock, out, len, &dest_lsa->u.sa, dest_lsa->len); - if (res != len) { + if (res != len) bb_info_msg("sent %d octets, ret=%d", len, res); - } } #if ENABLE_FEATURE_TRACEROUTE_VERBOSE @@ -797,7 +794,7 @@ common_traceroute_main(int op, char **argv) int lsrr = 0; #endif #if ENABLE_TRACEROUTE6 - sa_family_t af = AF_UNSPEC; + sa_family_t af; #else enum { af = AF_INET }; #endif @@ -863,31 +860,26 @@ common_traceroute_main(int op, char **argv) } #endif + /* Process destination and optional packet size */ + minpacket = sizeof(*outip) + SIZEOF_ICMP_HDR + sizeof(*outdata) + optlen; + if (!(op & OPT_USE_ICMP)) + minpacket += sizeof(*outudp) - SIZEOF_ICMP_HDR; #if ENABLE_TRACEROUTE6 + af = AF_UNSPEC; if (op & OPT_IPV4) af = AF_INET; - if (op & OPT_IPV6) { + if (op & OPT_IPV6) af = AF_INET6; - minpacket = sizeof(struct outdata6_t); - } else -#endif - { - minpacket = sizeof(*outip) + SIZEOF_ICMP_HDR - + sizeof(*outdata) + optlen; - if (!(op & OPT_USE_ICMP)) - minpacket += sizeof(*outudp) - SIZEOF_ICMP_HDR; - } - packlen = minpacket; - - /* Process destination and optional packet size */ - if (argv[1]) - packlen = xatoul_range(argv[1], minpacket, 32 * 1024); -#if ENABLE_TRACEROUTE6 dest_lsa = xhost_and_af2sockaddr(argv[0], port, af); af = dest_lsa->u.sa.sa_family; + if (af == AF_INET6) + minpacket = sizeof(struct outdata6_t); #else dest_lsa = xhost2sockaddr(argv[0], port); #endif + packlen = minpacket; + if (argv[1]) + packlen = xatoul_range(argv[1], minpacket, 32 * 1024); /* Ensure the socket fds won't be 0, 1 or 2 */ bb_sanitize_stdio(); |