diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/Config.in | 18 | ||||
| -rw-r--r-- | networking/Kbuild | 2 | ||||
| -rw-r--r-- | networking/ping.c | 521 | ||||
| -rw-r--r-- | networking/ping6.c | 471 |
4 files changed, 458 insertions, 554 deletions
diff --git a/networking/Config.in b/networking/Config.in index 0251a14..2235dbe 100644 --- a/networking/Config.in +++ b/networking/Config.in @@ -501,27 +501,19 @@ config PING ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. -config FEATURE_FANCY_PING - bool "Enable fancy ping output" - default y - depends on PING - help - 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 + depends on FEATURE_IPV6 && PING help This will give you a ping that can talk IPv6. -config FEATURE_FANCY_PING6 - bool "Enable fancy ping6 output" +config FEATURE_FANCY_PING + bool "Enable fancy ping output" default y - depends on PING6 + depends on PING help - Make the output from the ping6 applet include statistics, and at the + Make the output from the ping applet include statistics, and at the same time provide full support for ICMP packets. config ROUTE diff --git a/networking/Kbuild b/networking/Kbuild index 65ecfbf..68d3613 100644 --- a/networking/Kbuild +++ b/networking/Kbuild @@ -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 diff --git a/networking/ping.c b/networking/ping.c index fc2de45..7d36b74 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -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--; + 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(); + } +#else argv++; - if (argc < 1) +#endif + + hostname = *argv; + if (!hostname) bb_show_usage(); - ping(*argv); + +#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]; + + 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(const char *host) +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. + */ diff --git a/networking/ping6.c b/networking/ping6.c deleted file mode 100644 index b67fab5..0000000 --- a/networking/ping6.c +++ /dev/null @@ -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. - */ |