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ping: fix incorrect handling of -I (Iouri Kharon <bc-info@styx.cabel.net>)

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This commit is contained in:
Denis Vlasenko 2007-06-19 22:54:21 +00:00
parent a19faf8bb7
commit 5ad1048c3d
1 changed files with 8 additions and 5 deletions
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13
networking/ping.c
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@ -530,8 +530,12 @@ static void ping4(len_and_sockaddr *lsa)
pingsock = create_icmp_socket();
pingaddr.sin = lsa->sin;
if (source_lsa)
xbind(pingsock, &lsa->sa, lsa->len);
if (source_lsa) {
if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF,
&source_lsa->sa, source_lsa->len))
bb_error_msg_and_die("can't set multicast source interface");
xbind(pingsock, &source_lsa->sa, source_lsa->len);
}
/* enable broadcast pings */
setsockopt_broadcast(pingsock);
@ -578,7 +582,7 @@ static void ping6(len_and_sockaddr *lsa)
pingaddr.sin6 = lsa->sin6;
/* untested whether "-I addr" really works for IPv6: */
if (source_lsa)
xbind(pingsock, &lsa->sa, lsa->len);
xbind(pingsock, &source_lsa->sa, source_lsa->len);
#ifdef ICMP6_FILTER
{
@ -659,7 +663,7 @@ static void ping(len_and_sockaddr *lsa)
printf("PING %s (%s)", hostname, dotted);
if (source_lsa) {
printf(" from %s",
xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len));
xmalloc_sockaddr2dotted_noport(&source_lsa->sa, source_lsa->len));
}
printf(": %d data bytes\n", datalen);
@ -691,7 +695,6 @@ int ping_main(int argc, char **argv)
if_index = if_nametoindex(opt_I);
if (!if_index) {
/* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */
/* (ping doesn't support source IPv6 addresses yet anyway) */
source_lsa = xdotted2sockaddr(opt_I, 0);
}
}