ping6: fix sequence numbers (missed ntoh) and ttl display.
(apparently some, eh, clever libc guy decided that *CHANGING* IPV6_HOPLIMIT value in libc header is a nifty idea...)
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@ -12,23 +12,11 @@
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/times.h>
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#include <signal.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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//#include <netinet/in.h>
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//#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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//#include <arpa/inet.h>
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//#include <netdb.h>
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#include "busybox.h"
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enum {
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@ -120,9 +108,8 @@ static void ping(const char *host)
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c = recvfrom(pingsock, packet, sizeof(packet), 0,
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(struct sockaddr *) &from, &fromlen);
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if (c < 0) {
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if (errno == EINTR)
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continue;
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bb_perror_msg("recvfrom");
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if (errno != EINTR)
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bb_perror_msg("recvfrom");
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continue;
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}
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if (c >= 76) { /* ip + icmp */
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@ -135,7 +122,6 @@ static void ping(const char *host)
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}
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if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
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printf("%s is alive!\n", hostname);
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return;
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}
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int ping_main(int argc, char **argv)
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@ -231,7 +217,7 @@ static void sendping(int junk)
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if (i < 0)
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bb_perror_msg_and_die("sendto");
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else if ((size_t)i != sizeof(packet))
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if ((size_t)i != sizeof(packet))
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bb_error_msg_and_die("ping wrote %d chars; %d expected", i,
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(int)sizeof(packet));
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@ -328,7 +314,8 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from)
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} else
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if (icmppkt->icmp_type != ICMP_ECHO)
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bb_error_msg("warning: got ICMP %d (%s)",
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icmppkt->icmp_type, icmp_type_name(icmppkt->icmp_type));
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icmppkt->icmp_type,
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icmp_type_name(icmppkt->icmp_type));
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fflush(stdout);
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}
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@ -380,11 +367,11 @@ static void ping(const char *host)
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socklen_t fromlen = (socklen_t) sizeof(from);
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int c;
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if ((c = recvfrom(pingsock, packet, sizeof(packet), 0,
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(struct sockaddr *) &from, &fromlen)) < 0) {
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if (errno == EINTR)
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continue;
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bb_perror_msg("recvfrom");
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c = recvfrom(pingsock, packet, sizeof(packet), 0,
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(struct sockaddr *) &from, &fromlen);
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if (c < 0) {
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if (errno != EINTR)
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bb_perror_msg("recvfrom");
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continue;
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}
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unpack(packet, c, &from);
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@ -22,27 +22,21 @@
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* The code was modified by Bart Visscher <magick@linux-fan.com>
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/times.h>
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#include <signal.h>
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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//#include <netinet/in.h>
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//#include <netinet/ip6.h>
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#include <netinet/icmp6.h>
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#include <arpa/inet.h>
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//#include <arpa/inet.h>
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#include <net/if.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stddef.h> /* offsetof */
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//#include <netdb.h>
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#include "busybox.h"
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/* I see RENUMBERED constants in bits/in.h - !!?
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* What a fuck is going on with libc? Is it a glibc joke? */
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#ifdef IPV6_2292HOPLIMIT
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#undef IPV6_HOPLIMIT
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#define IPV6_HOPLIMIT IPV6_2292HOPLIMIT
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#endif
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enum {
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DEFDATALEN = 56,
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MAXIPLEN = 60,
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@ -94,7 +88,7 @@ static void ping(const char *host)
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c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0,
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(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6));
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if (c < 0 || c != sizeof(packet)) {
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if (c < 0) {
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if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
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bb_perror_msg_and_die("sendto");
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}
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@ -109,9 +103,8 @@ static void ping(const char *host)
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c = recvfrom(pingsock, packet, sizeof(packet), 0,
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(struct sockaddr *) &from, &fromlen);
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if (c < 0) {
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if (errno == EINTR)
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continue;
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bb_perror_msg("recvfrom");
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if (errno != EINTR)
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bb_perror_msg("recvfrom");
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continue;
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}
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if (c >= 8) { /* icmp6_hdr */
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@ -122,7 +115,6 @@ static void ping(const char *host)
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}
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if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
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printf("%s is alive!\n", h->h_name);
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return;
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}
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int ping6_main(int argc, char **argv)
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@ -218,7 +210,7 @@ static void sendping(int junk)
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if (i < 0)
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bb_perror_msg_and_die("sendto");
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else if ((size_t)i != sizeof(packet))
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if ((size_t)i != sizeof(packet))
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bb_error_msg_and_die("ping wrote %d chars; %d expected", i,
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(int)sizeof(packet));
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@ -246,16 +238,16 @@ static void sendping(int junk)
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static char *icmp6_type_name(int id)
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{
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switch (id) {
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case ICMP6_DST_UNREACH: return "Destination Unreachable";
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case ICMP6_PACKET_TOO_BIG: return "Packet too big";
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case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
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case ICMP6_PARAM_PROB: return "Parameter Problem";
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case ICMP6_ECHO_REPLY: return "Echo Reply";
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case ICMP6_ECHO_REQUEST: return "Echo Request";
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case MLD_LISTENER_QUERY: return "Listener Query";
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case MLD_LISTENER_REPORT: return "Listener Report";
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case MLD_LISTENER_REDUCTION: return "Listener Reduction";
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default: return "unknown ICMP type";
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case ICMP6_DST_UNREACH: return "Destination Unreachable";
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case ICMP6_PACKET_TOO_BIG: return "Packet too big";
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case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
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case ICMP6_PARAM_PROB: return "Parameter Problem";
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case ICMP6_ECHO_REPLY: return "Echo Reply";
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case ICMP6_ECHO_REQUEST: return "Echo Request";
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case MLD_LISTENER_QUERY: return "Listener Query";
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case MLD_LISTENER_REPORT: return "Listener Report";
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case MLD_LISTENER_REDUCTION: return "Listener Reduction";
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default: return "unknown ICMP type";
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}
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}
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@ -309,7 +301,7 @@ static void unpack(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit
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printf("%d bytes from %s: icmp6_seq=%u", sz,
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inet_ntop(AF_INET6, &pingaddr.sin6_addr,
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buf, sizeof(buf)),
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icmppkt->icmp6_seq);
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ntohs(icmppkt->icmp6_seq));
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printf(" ttl=%d time=%lu.%lu ms", hoplimit,
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triptime / 10, triptime % 10);
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if (dupflag)
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@ -361,14 +353,16 @@ static void ping(const char *host)
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setsockopt_broadcast(pingsock);
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/* set recv buf for broadcast pings */
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sockopt = 48 * 1024;
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sockopt = 48 * 1024; /* explain why 48k? */
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setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, (char *) &sockopt,
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sizeof(sockopt));
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sockopt = 2; /* iputils-ss020927 does this */
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sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
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setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, (char *) &sockopt,
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sizeof(sockopt));
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/* request ttl info to be returned in ancillary data */
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sockopt = 1;
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setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, (char *) &sockopt,
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sizeof(sockopt));
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@ -377,10 +371,10 @@ static void ping(const char *host)
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pingaddr.sin6_scope_id = if_index;
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printf("PING %s (%s): %d data bytes\n",
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hostent->h_name,
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inet_ntop(AF_INET6, &pingaddr.sin6_addr,
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hostent->h_name,
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inet_ntop(AF_INET6, &pingaddr.sin6_addr,
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buf, sizeof(buf)),
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datalen);
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datalen);
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signal(SIGINT, pingstats);
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@ -397,21 +391,23 @@ static void ping(const char *host)
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iov.iov_len = sizeof(packet);
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while (1) {
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int c;
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struct cmsghdr *cmsgptr = NULL;
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struct cmsghdr *mp;
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int hoplimit = -1;
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msg.msg_controllen = sizeof(control_buf);
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if ((c = recvmsg(pingsock, &msg, 0)) < 0) {
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if (errno == EINTR)
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continue;
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bb_perror_msg("recvfrom");
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c = recvmsg(pingsock, &msg, 0);
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if (c < 0) {
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if (errno != EINTR)
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bb_perror_msg("recvfrom");
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continue;
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}
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for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL;
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cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) {
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if (cmsgptr->cmsg_level == SOL_IPV6 &&
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cmsgptr->cmsg_type == IPV6_HOPLIMIT ) {
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hoplimit = *(int*)CMSG_DATA(cmsgptr);
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for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) {
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if (mp->cmsg_level == SOL_IPV6
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&& mp->cmsg_type == IPV6_HOPLIMIT
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/* don't check len - we trust the kernel: */
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/* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
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) {
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hoplimit = *(int*)CMSG_DATA(mp);
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}
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}
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unpack(packet, c, &from, hoplimit);
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