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Unify ping and ping6. ping has -4 and -6 which force

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name resolution into IP or IPv6 only, otherwise
we take address family returned by host2sockaddr()
in lsa->sa.sa_family. IOW: "ping ::1" with do IPv6 ping,
"ping 127.0.0.1" will do IPv4 ping.
ping6 is aliased to "ping -6".
This commit is contained in:
Denis Vlasenko 2007-01-24 23:53:22 +00:00
parent 677cb5eea5
commit b9a279ba94
7 changed files with 475 additions and 574 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
include/usage.h
View File

@ -2401,6 +2401,10 @@
"host"
#define ping_full_usage \
"Send ICMP ECHO_REQUEST packets to network hosts"
#define ping6_trivial_usage \
"host"
#define ping6_full_usage \
"Send ICMP ECHO_REQUEST packets to network hosts"
#else
#define ping_trivial_usage \
"[OPTION]... host"
@ -2412,22 +2416,6 @@
" -I IP Use IP as source address\n" \
" -q Quiet mode, only displays output at start\n" \
" and when finished"
#endif
#define ping_example_usage \
"$ ping localhost\n" \
"PING slag (127.0.0.1): 56 data bytes\n" \
"64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=20.1 ms\n" \
"\n" \
"--- debian ping statistics ---\n" \
"1 packets transmitted, 1 packets received, 0% packet loss\n" \
"round-trip min/avg/max = 20.1/20.1/20.1 ms\n"
#ifndef CONFIG_FEATURE_FANCY_PING6
#define ping6_trivial_usage \
"host"
#define ping6_full_usage \
"Send ICMP ECHO_REQUEST packets to network hosts"
#else
#define ping6_trivial_usage \
"[OPTION]... host"
#define ping6_full_usage \
@ -2438,6 +2426,14 @@
" -q Quiet mode, only displays output at start\n" \
" and when finished"
#endif
#define ping_example_usage \
"$ ping localhost\n" \
"PING slag (127.0.0.1): 56 data bytes\n" \
"64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=20.1 ms\n" \
"\n" \
"--- debian ping statistics ---\n" \
"1 packets transmitted, 1 packets received, 0% packet loss\n" \
"round-trip min/avg/max = 20.1/20.1/20.1 ms\n"
#define ping6_example_usage \
"$ ping6 ip6-localhost\n" \
"PING ip6-localhost (::1): 56 data bytes\n" \

2
libbb/xconnect.c
View File

@ -296,10 +296,12 @@ char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen)
return sockaddr2str(sa, salen, 0);
}
/* Unused
char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen)
{
return sockaddr2str(sa, salen, IGNORE_PORT);
}
*/
char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen)
{

22
networking/Config.in
View File

@ -501,6 +501,13 @@ config PING
ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to
elicit an ICMP ECHO_RESPONSE from a host or gateway.
config PING6
bool "ping6"
default n
depends on FEATURE_IPV6 && PING
help
This will give you a ping that can talk IPv6.
config FEATURE_FANCY_PING
bool "Enable fancy ping output"
default y
@ -509,21 +516,6 @@ config FEATURE_FANCY_PING
Make the output from the ping applet include statistics, and at the
same time provide full support for ICMP packets.
config PING6
bool "ping6"
default n
depends on FEATURE_IPV6
help
This will give you a ping that can talk IPv6.
config FEATURE_FANCY_PING6
bool "Enable fancy ping6 output"
default y
depends on PING6
help
Make the output from the ping6 applet include statistics, and at the
same time provide full support for ICMP packets.
config ROUTE
bool "route"
default n

2
networking/Kbuild
View File

@ -29,7 +29,7 @@ lib-$(CONFIG_NC) += nc.o
lib-$(CONFIG_NETSTAT) += netstat.o
lib-$(CONFIG_NSLOOKUP) += nslookup.o
lib-$(CONFIG_PING) += ping.o
lib-$(CONFIG_PING6) += ping6.o
lib-$(CONFIG_PING6) += ping.o
lib-$(CONFIG_ROUTE) += route.o
lib-$(CONFIG_TELNET) += telnet.o
lib-$(CONFIG_TELNETD) += telnetd.o

523
networking/ping.c
View File

@ -13,9 +13,30 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* from ping6.c:
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
*
* This version of ping is adapted from the ping in netkit-base 0.10,
* which is:
*
* Original copyright notice is retained at the end of this file.
*
* This version is an adaptation of ping.c from busybox.
* The code was modified by Bart Visscher <magick@linux-fan.com>
*/
#include <net/if.h>
#include <netinet/ip_icmp.h>
#include "busybox.h"
#if ENABLE_PING6
#include <netinet/icmp6.h>
/* I see RENUMBERED constants in bits/in.h - !!?
* What a fuck is going on with libc? Is it a glibc joke? */
#ifdef IPV6_2292HOPLIMIT
#undef IPV6_HOPLIMIT
#define IPV6_HOPLIMIT IPV6_2292HOPLIMIT
#endif
#endif
enum {
DEFDATALEN = 56,
@ -24,11 +45,9 @@ enum {
MAXPACKET = 65468,
MAX_DUP_CHK = (8 * 128),
MAXWAIT = 10,
PINGINTERVAL = 1 /* second */
PINGINTERVAL = 1, /* 1 second */
};
static void ping(const char *host);
/* common routines */
static int in_cksum(unsigned short *buf, int sz)
@ -54,34 +73,27 @@ static int in_cksum(unsigned short *buf, int sz)
return ans;
}
#ifndef CONFIG_FEATURE_FANCY_PING
#if !ENABLE_FEATURE_FANCY_PING
/* simple version */
static char *hostname;
static void noresp(int ign)
static void noresp(int ign ATTRIBUTE_UNUSED)
{
printf("No response from %s\n", hostname);
exit(EXIT_FAILURE);
}
static void ping(const char *host)
static void ping(len_and_sockaddr *lsa)
{
struct hostent *h;
struct sockaddr_in pingaddr;
struct icmp *pkt;
int pingsock, c;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
pingsock = create_icmp_socket();
memset(&pingaddr, 0, sizeof(pingaddr));
pingaddr.sin_family = AF_INET;
h = xgethostbyname(host);
memcpy(&pingaddr.sin_addr, h->h_addr, sizeof(pingaddr.sin_addr));
hostname = h->h_name;
pingaddr = lsa->sin;
pkt = (struct icmp *) packet;
memset(pkt, 0, sizeof(packet));
@ -89,15 +101,14 @@ static void ping(const char *host)
pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
c = sendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN, 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
(struct sockaddr *) &pingaddr, sizeof(pingaddr));
if (c < 0) {
if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
bb_perror_msg_and_die("sendto");
}
signal(SIGALRM, noresp);
alarm(5); /* give the host 5000ms to respond */
/* listen for replies */
while (1) {
struct sockaddr_in from;
@ -120,43 +131,140 @@ static void ping(const char *host)
}
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
printf("%s is alive!\n", hostname);
}
#if ENABLE_PING6
static void ping6(len_and_sockaddr *lsa)
{
struct sockaddr_in6 pingaddr;
struct icmp6_hdr *pkt;
int pingsock, c;
int sockopt;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
pingsock = create_icmp6_socket();
pingaddr = lsa->sin6;
pkt = (struct icmp6_hdr *) packet;
memset(pkt, 0, sizeof(packet));
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0,
(struct sockaddr *) &pingaddr, sizeof(pingaddr));
if (c < 0) {
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
bb_perror_msg_and_die("sendto");
}
/* listen for replies */
while (1) {
struct sockaddr_in6 from;
socklen_t fromlen = sizeof(from);
c = recvfrom(pingsock, packet, sizeof(packet), 0,
(struct sockaddr *) &from, &fromlen);
if (c < 0) {
if (errno != EINTR)
bb_perror_msg("recvfrom");
continue;
}
if (c >= 8) { /* icmp6_hdr */
pkt = (struct icmp6_hdr *) packet;
if (pkt->icmp6_type == ICMP6_ECHO_REPLY)
break;
}
}
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
}
#endif
int ping_main(int argc, char **argv)
{
argc--;
argv++;
if (argc < 1)
len_and_sockaddr *lsa;
#if ENABLE_PING6
sa_family_t af = AF_UNSPEC;
while (++argv[0][0]) == '-') {
if (argv[0][1] == '4') {
af = AF_INET;
continue;
}
if (argv[0][1] == '6') {
af = AF_INET6;
continue;
}
bb_show_usage();
ping(*argv);
}
#else
argv++;
#endif
hostname = *argv;
if (!hostname)
bb_show_usage();
#if ENABLE_PING6
lsa = host_and_af2sockaddr(hostname, 0, af);
#else
lsa = host_and_af2sockaddr(hostname, 0, AF_INET);
#endif
/* Set timer _after_ DNS resolution */
signal(SIGALRM, noresp);
alarm(5); /* give the host 5000ms to respond */
#if ENABLE_PING6
if (lsa->sa.sa_family == AF_INET6)
ping6(lsa);
else
#endif
ping(lsa);
printf("%s is alive!\n", hostname);
return EXIT_SUCCESS;
}
#else /* ! CONFIG_FEATURE_FANCY_PING */
#else /* FEATURE_FANCY_PING */
/* full(er) version */
#define OPT_STRING "qc:s:I:"
#define OPT_STRING ("qvc:s:I:4" USE_PING6("6"))
enum {
OPT_QUIET = 1 << 0,
OPT_VERBOSE = 1 << 1,
OPT_c = 1 << 2,
OPT_s = 1 << 3,
OPT_I = 1 << 4,
OPT_IPV4 = 1 << 5,
OPT_IPV6 = (1 << 6) * ENABLE_PING6,
};
static struct sockaddr_in pingaddr;
static union {
struct sockaddr sa;
struct sockaddr_in sin;
#if ENABLE_PING6
struct sockaddr_in sin6;
#endif
} pingaddr;
static struct sockaddr_in sourceaddr;
static int pingsock = -1;
static unsigned datalen; /* intentionally uninitialized to work around gcc bug */
static int if_index;
static unsigned long ntransmitted, nreceived, nrepeats, pingcount;
static int myid;
static unsigned long tmin = ULONG_MAX, tmax, tsum;
static char rcvd_tbl[MAX_DUP_CHK / 8];
static struct hostent *hostent;
static void sendping(int);
static void pingstats(int);
static void unpack(char *, int, struct sockaddr_in *);
static const char *hostname;
static const char *dotted;
#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
@ -166,25 +274,25 @@ static void unpack(char *, int, struct sockaddr_in *);
/**************************************************************************/
static void pingstats(int junk)
static void pingstats(void)
{
int status;
signal(SIGINT, SIG_IGN);
printf("\n--- %s ping statistics ---\n", hostent->h_name);
printf("\n--- %s ping statistics ---\n", hostname);
printf("%lu packets transmitted, ", ntransmitted);
printf("%lu packets received, ", nreceived);
if (nrepeats)
printf("%lu duplicates, ", nrepeats);
if (ntransmitted)
printf("%lu%% packet loss\n",
(ntransmitted - nreceived) * 100 / ntransmitted);
ntransmitted = (ntransmitted - nreceived) * 100 / ntransmitted);
printf("%lu%% packet loss\n", ntransmitted);
if (nreceived)
printf("round-trip min/avg/max = %lu.%lu/%lu.%lu/%lu.%lu ms\n",
tmin / 10, tmin % 10,
(tsum / (nreceived + nrepeats)) / 10,
(tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
tmin / 10, tmin % 10,
(tsum / (nreceived + nrepeats)) / 10,
(tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
if (nreceived != 0)
status = EXIT_SUCCESS;
else
@ -192,7 +300,7 @@ static void pingstats(int junk)
exit(status);
}
static void sendping(int junk)
static void sendping(int junk ATTRIBUTE_UNUSED)
{
struct icmp *pkt;
int i;
@ -212,7 +320,7 @@ static void sendping(int junk)
pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
i = sendto(pingsock, packet, sizeof(packet), 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
&pingaddr.sa, sizeof(pingaddr.sin));
if (i < 0)
bb_perror_msg_and_die("sendto");
@ -223,12 +331,50 @@ static void sendping(int junk)
signal(SIGALRM, sendping);
if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
alarm(PINGINTERVAL);
} else { /* done, wait for the last ping to come back */
} else { /* done, wait for the last ping to come back */
/* todo, don't necessarily need to wait so long... */
signal(SIGALRM, pingstats);
alarm(MAXWAIT);
}
}
#if ENABLE_PING6
static void sendping6(int junk ATTRIBUTE_UNUSED)
{
struct icmp6_hdr *pkt;
int i;
char packet[datalen + sizeof (struct icmp6_hdr)];
pkt = (struct icmp6_hdr *) packet;
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
pkt->icmp6_code = 0;
pkt->icmp6_cksum = 0;
pkt->icmp6_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
pkt->icmp6_id = myid;
CLR((uint16_t)ntransmitted % MAX_DUP_CHK);
ntransmitted++;
gettimeofday((struct timeval *) &pkt->icmp6_data8[4], NULL);
i = sendto(pingsock, packet, sizeof(packet), 0,
&pingaddr.sa, sizeof(pingaddr.sin6));
if (i < 0)
bb_perror_msg_and_die("sendto");
if ((size_t)i != sizeof(packet))
bb_error_msg_and_die("ping wrote %d chars; %d expected", i,
(int)sizeof(packet));
signal(SIGALRM, sendping6);
if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
alarm(PINGINTERVAL);
} else { /* done, wait for the last ping to come back */
/* todo, don't necessarily need to wait so long... */
signal(SIGALRM, pingstats);
alarm(MAXWAIT);
}
}
#endif
static char *icmp_type_name(int id)
{
@ -249,6 +395,34 @@ static char *icmp_type_name(int id)
default: return "unknown ICMP type";
}
}
#if ENABLE_PING6
/* RFC3542 changed some definitions from RFC2292 for no good reason, whee!
* the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */
#ifndef MLD_LISTENER_QUERY
# define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY
#endif
#ifndef MLD_LISTENER_REPORT
# define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT
#endif
#ifndef MLD_LISTENER_REDUCTION
# define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION
#endif
static char *icmp6_type_name(int id)
{
switch (id) {
case ICMP6_DST_UNREACH: return "Destination Unreachable";
case ICMP6_PACKET_TOO_BIG: return "Packet too big";
case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
case ICMP6_PARAM_PROB: return "Parameter Problem";
case ICMP6_ECHO_REPLY: return "Echo Reply";
case ICMP6_ECHO_REQUEST: return "Echo Request";
case MLD_LISTENER_QUERY: return "Listener Query";
case MLD_LISTENER_REPORT: return "Listener Report";
case MLD_LISTENER_REDUCTION: return "Listener Reduction";
default: return "unknown ICMP type";
}
}
#endif
static void unpack(char *buf, int sz, struct sockaddr_in *from)
{
@ -318,27 +492,85 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from)
}
fflush(stdout);
}
#if ENABLE_PING6
static void unpack6(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit)
{
struct icmp6_hdr *icmppkt;
struct timeval tv, *tp;
int dupflag;
unsigned long triptime;
char buf[INET6_ADDRSTRLEN];
static void ping(const char *host)
gettimeofday(&tv, NULL);
/* discard if too short */
if (sz < (datalen + sizeof(struct icmp6_hdr)))
return;
icmppkt = (struct icmp6_hdr *) packet;
if (icmppkt->icmp6_id != myid)
return; /* not our ping */
if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) {
uint16_t recv_seq = ntohs(icmppkt->icmp6_seq);
++nreceived;
tp = (struct timeval *) &icmppkt->icmp6_data8[4];
if ((tv.tv_usec -= tp->tv_usec) < 0) {
--tv.tv_sec;
tv.tv_usec += 1000000;
}
tv.tv_sec -= tp->tv_sec;
triptime = tv.tv_sec * 10000 + (tv.tv_usec / 100);
tsum += triptime;
if (triptime < tmin)
tmin = triptime;
if (triptime > tmax)
tmax = triptime;
if (TST(recv_seq % MAX_DUP_CHK)) {
++nrepeats;
--nreceived;
dupflag = 1;
} else {
SET(recv_seq % MAX_DUP_CHK);
dupflag = 0;
}
if (option_mask32 & OPT_QUIET)
return;
printf("%d bytes from %s: icmp6_seq=%u", sz,
inet_ntop(AF_INET6, &pingaddr.sin6.sin6_addr,
buf, sizeof(buf)),
recv_seq);
printf(" ttl=%d time=%lu.%lu ms", hoplimit,
triptime / 10, triptime % 10);
if (dupflag)
printf(" (DUP!)");
puts("");
} else {
if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST)
bb_error_msg("warning: got ICMP %d (%s)",
icmppkt->icmp6_type,
icmp6_type_name(icmppkt->icmp6_type));
}
fflush(stdout);
}
#endif
static void ping(len_and_sockaddr *lsa)
{
char packet[datalen + MAXIPLEN + MAXICMPLEN];
int sockopt;
pingsock = create_icmp_socket();
pingaddr.sin = lsa->sin;
if (sourceaddr.sin_addr.s_addr) {
xbind(pingsock, (struct sockaddr*)&sourceaddr, sizeof(sourceaddr));
}
memset(&pingaddr, 0, sizeof(pingaddr));
pingaddr.sin_family = AF_INET;
hostent = xgethostbyname(host);
if (hostent->h_addrtype != AF_INET)
bb_error_msg_and_die("unknown address type; only AF_INET is currently supported");
memcpy(&pingaddr.sin_addr, hostent->h_addr, sizeof(pingaddr.sin_addr));
/* enable broadcast pings */
setsockopt_broadcast(pingsock);
@ -346,9 +578,7 @@ static void ping(const char *host)
sockopt = 48 * 1024; /* explain why 48k? */
setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
printf("PING %s (%s)",
hostent->h_name,
inet_ntoa(*(struct in_addr *) &pingaddr.sin_addr.s_addr));
printf("PING %s (%s)", hostname, dotted);
if (sourceaddr.sin_addr.s_addr) {
printf(" from %s",
inet_ntoa(*(struct in_addr *) &sourceaddr.sin_addr.s_addr));
@ -377,8 +607,100 @@ static void ping(const char *host)
if (pingcount > 0 && nreceived >= pingcount)
break;
}
pingstats(0);
}
#if ENABLE_PING6
extern int BUG_bad_offsetof_icmp6_cksum(void);
static void ping6(len_and_sockaddr *lsa)
{
char packet[datalen + MAXIPLEN + MAXICMPLEN];
char buf[INET6_ADDRSTRLEN];
int sockopt;
struct msghdr msg;
struct sockaddr_in6 from;
struct iovec iov;
char control_buf[CMSG_SPACE(36)];
pingsock = create_icmp6_socket();
pingaddr.sin6 = lsa->sin6;
//if (sourceaddr.sin_addr.s_addr) {
// xbind(pingsock, (struct sockaddr*)&sourceaddr, sizeof(sourceaddr));
//}
#ifdef ICMP6_FILTER
{
struct icmp6_filter filt;
if (!(option_mask32 & OPT_VERBOSE)) {
ICMP6_FILTER_SETBLOCKALL(&filt);
ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
} else {
ICMP6_FILTER_SETPASSALL(&filt);
}
if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
sizeof(filt)) < 0)
bb_error_msg_and_die("setsockopt(ICMP6_FILTER)");
}
#endif /*ICMP6_FILTER*/
/* enable broadcast pings */
setsockopt_broadcast(pingsock);
/* set recv buf for broadcast pings */
sockopt = 48 * 1024; /* explain why 48k? */
setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2)
BUG_bad_offsetof_icmp6_cksum();
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
/* request ttl info to be returned in ancillary data */
setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, &const_int_1, sizeof(const_int_1));
if (if_index)
pingaddr.sin6_scope_id = if_index;
printf("PING %s (%s): %d data bytes\n", hostname, dotted, datalen);
signal(SIGINT, pingstats);
/* start the ping's going ... */
sendping6(0);
/* listen for replies */
msg.msg_name = &from;
msg.msg_namelen = sizeof(from);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = control_buf;
iov.iov_base = packet;
iov.iov_len = sizeof(packet);
while (1) {
int c;
struct cmsghdr *mp;
int hoplimit = -1;
msg.msg_controllen = sizeof(control_buf);
c = recvmsg(pingsock, &msg, 0);
if (c < 0) {
if (errno != EINTR)
bb_perror_msg("recvfrom");
continue;
}
for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) {
if (mp->cmsg_level == SOL_IPV6
&& mp->cmsg_type == IPV6_HOPLIMIT
/* don't check len - we trust the kernel: */
/* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
) {
hoplimit = *(int*)CMSG_DATA(mp);
}
}
unpack6(packet, c, &from, hoplimit);
if (pingcount > 0 && nreceived >= pingcount)
break;
}
}
#endif
/* TODO: consolidate ether-wake.c, dnsd.c, ifupdown.c, nslookup.c
* versions of below thing. BTW we have far too many "%u.%u.%u.%u" too...
@ -403,26 +725,87 @@ static int parse_nipquad(const char *str, struct sockaddr_in* addr)
int ping_main(int argc, char **argv)
{
const char *hostname;
char *opt_c, *opt_s, *opt_I;
USE_PING6(sa_family_t af = AF_UNSPEC;)
datalen = DEFDATALEN; /* initialized here rather than in global scope to work around gcc bug */
/* exactly one argument needed */
opt_complementary = "=1";
/* exactly one argument needed, -v and -q don't mix. So do 4, 6 */
opt_complementary = "=1:q--v:v--q" USE_PING6(":4--6:6--4");
getopt32(argc, argv, OPT_STRING, &opt_c, &opt_s, &opt_I);
if (option_mask32 & 2) pingcount = xatoul(opt_c); // -c
if (option_mask32 & 4) datalen = xatou16(opt_s); // -s
if (option_mask32 & 8) { // -I
/* TODO: ping6 accepts iface too:
if_index = if_nametoindex(*argv);
if (!if_index) ...
make it true for ping. */
if (parse_nipquad(opt_I, &sourceaddr))
bb_show_usage();
if (option_mask32 & OPT_c) pingcount = xatoul(opt_c); // -c
if (option_mask32 & OPT_s) datalen = xatou16(opt_s); // -s
if (option_mask32 & OPT_I) { // -I
if_index = if_nametoindex(opt_I);
if (!if_index)
if (parse_nipquad(opt_I, &sourceaddr))
bb_show_usage();
}
myid = (int16_t) getpid();
ping(argv[optind]);
hostname = argv[optind];
#if ENABLE_PING6
if (option_mask32 & OPT_IPV4)
af = AF_INET;
if (option_mask32 & OPT_IPV6)
af = AF_INET6;
lsa = host_and_af2sockaddr(hostname, 0, af);
#else
lsa = host_and_af2sockaddr(hostname, 0, AF_INET);
#endif
dotted = xmalloc_sockaddr2dotted_noport(lsa->sa, lsa->len);
#if ENABLE_PING6
if (lsa->sa.sa_family == AF_INET6)
ping6(lsa);
else
#endif
ping(lsa);
pingstats();
return EXIT_SUCCESS;
}
#endif /* ! CONFIG_FEATURE_FANCY_PING */
#endif /* FEATURE_FANCY_PING */
#if ENABLE_PING6
int ping6_main(int argc, char **argv)
{
argv[0] = "-6";
return ping_main(argc + 1, argv - 1);
}
#endif
/* from ping6.c:
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Mike Muuss.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

471
networking/ping6.c
View File

@ -1,471 +0,0 @@
/* vi: set sw=4 ts=4: */
/*
* Mini ping implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
* This version of ping is adapted from the ping in netkit-base 0.10,
* which is:
*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Mike Muuss.
*
* Original copyright notice is retained at the end of this file.
*
* This version is an adaptation of ping.c from busybox.
* The code was modified by Bart Visscher <magick@linux-fan.com>
*/
#include <netinet/icmp6.h>
#include <net/if.h>
#include "busybox.h"
/* I see RENUMBERED constants in bits/in.h - !!?
* What a fuck is going on with libc? Is it a glibc joke? */
#ifdef IPV6_2292HOPLIMIT
#undef IPV6_HOPLIMIT
#define IPV6_HOPLIMIT IPV6_2292HOPLIMIT
#endif
enum {
DEFDATALEN = 56,
MAXIPLEN = 60,
MAXICMPLEN = 76,
MAXPACKET = 65468,
MAX_DUP_CHK = (8 * 128),
MAXWAIT = 10,
PINGINTERVAL = 1 /* second */
};
static void ping(const char *host);
#ifndef CONFIG_FEATURE_FANCY_PING6
/* simple version */
static const char *hostname;
static void noresp(int ign)
{
printf("No response from %s\n", hostname);
exit(EXIT_FAILURE);
}
static void ping(const char *host)
{
len_and_sockaddr *lsa;
struct sockaddr_in6 pingaddr;
struct icmp6_hdr *pkt;
int pingsock, c;
int sockopt;
char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN];
hostname = host;
pingsock = create_icmp6_socket();
lsa = host_and_af2sockaddr(host, 0, AF_INET6);
pingaddr = lsa->sin6;
pkt = (struct icmp6_hdr *) packet;
memset(pkt, 0, sizeof(packet));
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
c = sendto(pingsock, packet, DEFDATALEN + sizeof (struct icmp6_hdr), 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6));
if (c < 0) {
if (ENABLE_FEATURE_CLEAN_UP) close(pingsock);
bb_perror_msg_and_die("sendto");
}
signal(SIGALRM, noresp);
alarm(5); /* give the host 5000ms to respond */
/* listen for replies */
while (1) {
struct sockaddr_in6 from;
socklen_t fromlen = sizeof(from);
c = recvfrom(pingsock, packet, sizeof(packet), 0,
(struct sockaddr *) &from, &fromlen);
if (c < 0) {
if (errno != EINTR)
bb_perror_msg("recvfrom");
continue;
}
if (c >= 8) { /* icmp6_hdr */
pkt = (struct icmp6_hdr *) packet;
if (pkt->icmp6_type == ICMP6_ECHO_REPLY)
break;
}
}
if (ENABLE_FEATURE_CLEAN_UP)
close(pingsock);
printf("%s is alive!\n", hostname);
}
int ping6_main(int argc, char **argv)
{
argc--;
argv++;
if (argc < 1)
bb_show_usage();
ping(*argv);
return EXIT_SUCCESS;
}
#else /* ! CONFIG_FEATURE_FANCY_PING6 */
/* full(er) version */
#define OPT_STRING "qvc:s:I:"
enum {
OPT_QUIET = 1 << 0,
OPT_VERBOSE = 1 << 1,
};
static struct sockaddr_in6 pingaddr;
static int pingsock = -1;
static unsigned datalen; /* intentionally uninitialized to work around gcc bug */
static int if_index;
static unsigned long ntransmitted, nreceived, nrepeats, pingcount;
static int myid;
static unsigned long tmin = ULONG_MAX, tmax, tsum;
static char rcvd_tbl[MAX_DUP_CHK / 8];
static char *hostname;
static void sendping(int);
static void pingstats(int);
static void unpack(char *, int, struct sockaddr_in6 *, int);
#define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
#define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
#define SET(bit) (A(bit) |= B(bit))
#define CLR(bit) (A(bit) &= (~B(bit)))
#define TST(bit) (A(bit) & B(bit))
/**************************************************************************/
static void pingstats(int junk)
{
int status;
signal(SIGINT, SIG_IGN);
printf("\n--- %s ping statistics ---\n", hostname);
printf("%lu packets transmitted, ", ntransmitted);
printf("%lu packets received, ", nreceived);
if (nrepeats)
printf("%lu duplicates, ", nrepeats);
if (ntransmitted)
printf("%lu%% packet loss\n",
(ntransmitted - nreceived) * 100 / ntransmitted);
if (nreceived)
printf("round-trip min/avg/max = %lu.%lu/%lu.%lu/%lu.%lu ms\n",
tmin / 10, tmin % 10,
(tsum / (nreceived + nrepeats)) / 10,
(tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
if (nreceived != 0)
status = EXIT_SUCCESS;
else
status = EXIT_FAILURE;
exit(status);
}
static void sendping(int junk)
{
struct icmp6_hdr *pkt;
int i;
char packet[datalen + sizeof (struct icmp6_hdr)];
pkt = (struct icmp6_hdr *) packet;
pkt->icmp6_type = ICMP6_ECHO_REQUEST;
pkt->icmp6_code = 0;
pkt->icmp6_cksum = 0;
pkt->icmp6_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
pkt->icmp6_id = myid;
CLR((uint16_t)ntransmitted % MAX_DUP_CHK);
ntransmitted++;
gettimeofday((struct timeval *) &pkt->icmp6_data8[4], NULL);
i = sendto(pingsock, packet, sizeof(packet), 0,
(struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in6));
if (i < 0)
bb_perror_msg_and_die("sendto");
if ((size_t)i != sizeof(packet))
bb_error_msg_and_die("ping wrote %d chars; %d expected", i,
(int)sizeof(packet));
signal(SIGALRM, sendping);
if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
alarm(PINGINTERVAL);
} else { /* done, wait for the last ping to come back */
/* todo, don't necessarily need to wait so long... */
signal(SIGALRM, pingstats);
alarm(MAXWAIT);
}
}
/* RFC3542 changed some definitions from RFC2292 for no good reason, whee!
* the newer 3542 uses a MLD_ prefix where as 2292 uses ICMP6_ prefix */
#ifndef MLD_LISTENER_QUERY
# define MLD_LISTENER_QUERY ICMP6_MEMBERSHIP_QUERY
#endif
#ifndef MLD_LISTENER_REPORT
# define MLD_LISTENER_REPORT ICMP6_MEMBERSHIP_REPORT
#endif
#ifndef MLD_LISTENER_REDUCTION
# define MLD_LISTENER_REDUCTION ICMP6_MEMBERSHIP_REDUCTION
#endif
static char *icmp6_type_name(int id)
{
switch (id) {
case ICMP6_DST_UNREACH: return "Destination Unreachable";
case ICMP6_PACKET_TOO_BIG: return "Packet too big";
case ICMP6_TIME_EXCEEDED: return "Time Exceeded";
case ICMP6_PARAM_PROB: return "Parameter Problem";
case ICMP6_ECHO_REPLY: return "Echo Reply";
case ICMP6_ECHO_REQUEST: return "Echo Request";
case MLD_LISTENER_QUERY: return "Listener Query";
case MLD_LISTENER_REPORT: return "Listener Report";
case MLD_LISTENER_REDUCTION: return "Listener Reduction";
default: return "unknown ICMP type";
}
}
static void unpack(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit)
{
struct icmp6_hdr *icmppkt;
struct timeval tv, *tp;
int dupflag;
unsigned long triptime;
char buf[INET6_ADDRSTRLEN];
gettimeofday(&tv, NULL);
/* discard if too short */
if (sz < (datalen + sizeof(struct icmp6_hdr)))
return;
icmppkt = (struct icmp6_hdr *) packet;
if (icmppkt->icmp6_id != myid)
return; /* not our ping */
if (icmppkt->icmp6_type == ICMP6_ECHO_REPLY) {
uint16_t recv_seq = ntohs(icmppkt->icmp6_seq);
++nreceived;
tp = (struct timeval *) &icmppkt->icmp6_data8[4];
if ((tv.tv_usec -= tp->tv_usec) < 0) {
--tv.tv_sec;
tv.tv_usec += 1000000;
}
tv.tv_sec -= tp->tv_sec;
triptime = tv.tv_sec * 10000 + (tv.tv_usec / 100);
tsum += triptime;
if (triptime < tmin)
tmin = triptime;
if (triptime > tmax)
tmax = triptime;
if (TST(recv_seq % MAX_DUP_CHK)) {
++nrepeats;
--nreceived;
dupflag = 1;
} else {
SET(recv_seq % MAX_DUP_CHK);
dupflag = 0;
}
if (option_mask32 & OPT_QUIET)
return;
printf("%d bytes from %s: icmp6_seq=%u", sz,
inet_ntop(AF_INET6, &pingaddr.sin6_addr,
buf, sizeof(buf)),
recv_seq);
printf(" ttl=%d time=%lu.%lu ms", hoplimit,
triptime / 10, triptime % 10);
if (dupflag)
printf(" (DUP!)");
puts("");
} else {
if (icmppkt->icmp6_type != ICMP6_ECHO_REQUEST)
bb_error_msg("warning: got ICMP %d (%s)",
icmppkt->icmp6_type,
icmp6_type_name(icmppkt->icmp6_type));
}
fflush(stdout);
}
extern int BUG_bad_offsetof_icmp6_cksum(void);
static void ping(const char *host)
{
len_and_sockaddr *lsa;
char packet[datalen + MAXIPLEN + MAXICMPLEN];
char buf[INET6_ADDRSTRLEN];
int sockopt;
struct msghdr msg;
struct sockaddr_in6 from;
struct iovec iov;
char control_buf[CMSG_SPACE(36)];
pingsock = create_icmp6_socket();
lsa = host_and_af2sockaddr(host, 0, AF_INET6);
hostname = xmalloc_sockaddr2host_noport(&lsa->sa, lsa->len);
pingaddr = lsa->sin6;
#ifdef ICMP6_FILTER
{
struct icmp6_filter filt;
if (!(option_mask32 & OPT_VERBOSE)) {
ICMP6_FILTER_SETBLOCKALL(&filt);
ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
} else {
ICMP6_FILTER_SETPASSALL(&filt);
}
if (setsockopt(pingsock, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
sizeof(filt)) < 0)
bb_error_msg_and_die("setsockopt(ICMP6_FILTER)");
}
#endif /*ICMP6_FILTER*/
/* enable broadcast pings */
setsockopt_broadcast(pingsock);
/* set recv buf for broadcast pings */
sockopt = 48 * 1024; /* explain why 48k? */
setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2)
BUG_bad_offsetof_icmp6_cksum();
setsockopt(pingsock, SOL_RAW, IPV6_CHECKSUM, &sockopt, sizeof(sockopt));
/* request ttl info to be returned in ancillary data */
setsockopt(pingsock, SOL_IPV6, IPV6_HOPLIMIT, &const_int_1, sizeof(const_int_1));
if (if_index)
pingaddr.sin6_scope_id = if_index;
printf("PING %s (%s): %d data bytes\n",
hostname,
inet_ntop(AF_INET6, &pingaddr.sin6_addr,
buf, sizeof(buf)),
datalen);
signal(SIGINT, pingstats);
/* start the ping's going ... */
sendping(0);
/* listen for replies */
msg.msg_name = &from;
msg.msg_namelen = sizeof(from);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = control_buf;
iov.iov_base = packet;
iov.iov_len = sizeof(packet);
while (1) {
int c;
struct cmsghdr *mp;
int hoplimit = -1;
msg.msg_controllen = sizeof(control_buf);
c = recvmsg(pingsock, &msg, 0);
if (c < 0) {
if (errno != EINTR)
bb_perror_msg("recvfrom");
continue;
}
for (mp = CMSG_FIRSTHDR(&msg); mp; mp = CMSG_NXTHDR(&msg, mp)) {
if (mp->cmsg_level == SOL_IPV6
&& mp->cmsg_type == IPV6_HOPLIMIT
/* don't check len - we trust the kernel: */
/* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
) {
hoplimit = *(int*)CMSG_DATA(mp);
}
}
unpack(packet, c, &from, hoplimit);
if (pingcount > 0 && nreceived >= pingcount)
break;
}
pingstats(0);
}
int ping6_main(int argc, char **argv)
{
char *opt_c, *opt_s, *opt_I;
datalen = DEFDATALEN; /* initialized here rather than in global scope to work around gcc bug */
/* exactly one argument needed, -v and -q don't mix */
opt_complementary = "=1:q--v:v--q";
getopt32(argc, argv, OPT_STRING, &opt_c, &opt_s, &opt_I);
if (option_mask32 & 4) pingcount = xatoul(opt_c); // -c
if (option_mask32 & 8) datalen = xatou16(opt_s); // -s
if (option_mask32 & 0x10) { // -I
if_index = if_nametoindex(opt_I);
if (!if_index)
bb_error_msg_and_die(
"%s: invalid interface name", opt_I);
}
myid = (int16_t) getpid();
ping(argv[optind]);
return EXIT_SUCCESS;
}
#endif /* ! CONFIG_FEATURE_FANCY_PING6 */
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Mike Muuss.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

1
scripts/defconfig
View File

@ -566,7 +566,6 @@ CONFIG_NSLOOKUP=y
CONFIG_PING=y
CONFIG_FEATURE_FANCY_PING=y
CONFIG_PING6=y
CONFIG_FEATURE_FANCY_PING6=y
CONFIG_ROUTE=y
CONFIG_TELNET=y
CONFIG_FEATURE_TELNET_TTYPE=y