X-Git-Url: https://git.saurik.com/apple/network_cmds.git/blobdiff_plain/07f470571f6fc2709bdcf62fad0e6c4c1bf4e1b9..89c4ed635a5aba9241e12e796c7e5025879d0e77:/ping.tproj/ping.c diff --git a/ping.tproj/ping.c b/ping.tproj/ping.c index c152f09..fa79b60 100644 --- a/ping.tproj/ping.c +++ b/ping.tproj/ping.c @@ -1,17 +1,20 @@ /* - * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. + * Copyright (c) 1999-2015 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. - * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, @@ -19,8 +22,8 @@ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1989, 1993 @@ -37,10 +40,6 @@ * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. * 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. @@ -58,11 +57,18 @@ * SUCH DAMAGE. */ +#include + +#ifndef lint +__unused static const char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ /* * P I N G . C * - * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, + * Using the Internet Control Message Protocol (ICMP) "ECHO" facility, * measure round-trip-delays and packet loss across network paths. * * Author - @@ -77,30 +83,49 @@ * This program has to run SUID to ROOT to access the ICMP socket. */ -#include +#include /* NB: we rely on this for */ #include -#include +#include #include -#include +#include -#include #include +#include #include #include #include -#include -#include -#include +#include +#include + +#ifdef IPSEC +#include +#endif /*IPSEC*/ + #include +#include #include +#include +#include +#include +#include +#include #include - -#define DEFDATALEN (64 - 8) /* default data length */ -#define MAXIPLEN 60 -#define MAXICMPLEN 76 -#define MAXPACKET (65536 - 60 - 8)/* max packet size */ -#define MAXWAIT 10 /* max seconds to wait for response */ -#define NROUTES 9 /* number of record route slots */ +#include +#include +#include + +#define INADDR_LEN ((int)sizeof(in_addr_t)) +#define TIMEVAL_LEN ((int)sizeof(struct tv32)) +#define MASK_LEN (ICMP_MASKLEN - ICMP_MINLEN) +#define TS_LEN (ICMP_TSLEN - ICMP_MINLEN) +#define DEFDATALEN 56 /* default data length */ +#define FLOOD_BACKOFF 20000 /* usecs to back off if F_FLOOD mode */ + /* runs out of buffer space */ +#define MAXIPLEN (sizeof(struct ip) + MAX_IPOPTLEN) +#define MAXICMPLEN (ICMP_ADVLENMIN + MAX_IPOPTLEN) +#define MAXWAIT 10000 /* max ms to wait for response */ +#define MAXALARM (60 * 60) /* max seconds for alarm timeout */ +#define MAXTOS 255 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */ #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */ @@ -108,17 +133,40 @@ #define CLR(bit) (A(bit) &= (~B(bit))) #define TST(bit) (A(bit) & B(bit)) +struct tv32 { + u_int32_t tv32_sec; + u_int32_t tv32_usec; +}; + /* various options */ int options; -#define F_FLOOD 0x001 -#define F_INTERVAL 0x002 -#define F_NUMERIC 0x004 -#define F_PINGFILLED 0x008 -#define F_QUIET 0x010 -#define F_RROUTE 0x020 -#define F_SO_DEBUG 0x040 -#define F_SO_DONTROUTE 0x080 -#define F_VERBOSE 0x100 +#define F_FLOOD 0x0001 +#define F_INTERVAL 0x0002 +#define F_NUMERIC 0x0004 +#define F_PINGFILLED 0x0008 +#define F_QUIET 0x0010 +#define F_RROUTE 0x0020 +#define F_SO_DEBUG 0x0040 +#define F_SO_DONTROUTE 0x0080 +#define F_VERBOSE 0x0100 +#define F_QUIET2 0x0200 +#define F_NOLOOP 0x0400 +#define F_MTTL 0x0800 +#define F_MIF 0x1000 +#define F_AUDIBLE 0x2000 +#ifdef IPSEC +#ifdef IPSEC_POLICY_IPSEC +#define F_POLICY 0x4000 +#endif /*IPSEC_POLICY_IPSEC*/ +#endif /*IPSEC*/ +#define F_TTL 0x8000 +#define F_MISSED 0x10000 +#define F_ONCE 0x20000 +#define F_HDRINCL 0x40000 +#define F_MASK 0x80000 +#define F_TIME 0x100000 +#define F_SWEEP 0x200000 +#define F_WAITTIME 0x400000 /* * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum @@ -129,102 +177,319 @@ int options; int mx_dup_ck = MAX_DUP_CHK; char rcvd_tbl[MAX_DUP_CHK / 8]; -struct sockaddr whereto; /* who to ping */ +struct sockaddr_in whereto; /* who to ping */ int datalen = DEFDATALEN; +int maxpayload; int s; /* socket file descriptor */ -u_char outpack[MAXPACKET]; +u_char outpackhdr[IP_MAXPACKET], *outpack; +char BBELL = '\a'; /* characters written for MISSED and AUDIBLE */ char BSPACE = '\b'; /* characters written for flood */ char DOT = '.'; char *hostname; +char *shostname; int ident; /* process id to identify our packets */ +int uid; /* cached uid for micro-optimization */ +u_char icmp_type = ICMP_ECHO; +u_char icmp_type_rsp = ICMP_ECHOREPLY; +int phdr_len = 0; +int send_len; +char *boundif; +unsigned int ifscope; +#if defined(IP_FORCE_OUT_IFP) && TARGET_OS_EMBEDDED +char boundifname[IFNAMSIZ]; +#endif /* IP_FORCE_OUT_IFP */ +int nocell; +int how_traffic_class = 0; +int traffic_class = SO_TC_CTL; /* use control class, by default */ +int no_dup = 0; /* counters */ +long nmissedmax; /* max value of ntransmitted - nreceived - 1 */ long npackets; /* max packets to transmit */ long nreceived; /* # of packets we got back */ long nrepeats; /* number of duplicates */ long ntransmitted; /* sequence # for outbound packets = #sent */ -int interval = 1; /* interval between packets */ +long snpackets; /* max packets to transmit in one sweep */ +long snreceived; /* # of packets we got back in this sweep */ +long sntransmitted; /* # of packets we sent in this sweep */ +int sweepmax; /* max value of payload in sweep */ +int sweepmin = 0; /* start value of payload in sweep */ +int sweepincr = 1; /* payload increment in sweep */ +int interval = 1000; /* interval between packets, ms */ +int waittime = MAXWAIT; /* timeout for each packet */ +long nrcvtimeout = 0; /* # of packets we got back after waittime */ +int icmp_len = 0; /* length of the ICMP header */ /* timing */ int timing; /* flag to do timing */ double tmin = 999999999.0; /* minimum round trip time */ double tmax = 0.0; /* maximum round trip time */ double tsum = 0.0; /* sum of all times, for doing average */ - -char *pr_addr(); -void catcher(), finish(); - -main(argc, argv) - int argc; - char **argv; +double tsumsq = 0.0; /* sum of all times squared, for std. dev. */ + +volatile sig_atomic_t finish_up; /* nonzero if we've been told to finish up */ +volatile sig_atomic_t siginfo_p; + +static void fill(char *, char *); +static u_short in_cksum(u_short *, int); +static void check_status(void); +static void finish(void) __dead2; +static void pinger(void); +static char *pr_addr(struct in_addr); +static char *pr_ntime(n_time); +static void pr_icmph(struct icmp *); +static void pr_iph(struct ip *); +static void pr_pack(char *, int, struct sockaddr_in *, struct timeval *, int); +static void pr_retip(struct ip *); +static void status(int); +static void stopit(int); +static void tvsub(struct timeval *, const struct timeval *); +static uint32_t str2svc(const char *); +static void usage(void) __dead2; + +int +main(int argc, char *const *argv) { - extern int errno, optind; - extern char *optarg; - struct timeval timeout; + struct sockaddr_in from, sock_in; + struct in_addr ifaddr; + struct timeval last, intvl; + struct iovec iov; + struct ip *ip; + struct msghdr msg; + struct sigaction si_sa; + size_t sz; + u_char *datap, packet[IP_MAXPACKET] __attribute__((aligned(4))); + char *ep, *source, *target, *payload; struct hostent *hp; +#ifdef IPSEC_POLICY_IPSEC + char *policy_in, *policy_out; +#endif struct sockaddr_in *to; - struct protoent *proto; - register int i; - int ch, fdmask, hold, packlen, preload; - u_char *datap, *packet; - char *target, hnamebuf[MAXHOSTNAMELEN], *malloc(); + double t; + u_long alarmtimeout, ultmp; + int almost_done, ch, df, hold, i, mib[4], preload, sockerrno, + tos, ttl; + char ctrl[CMSG_SPACE(sizeof(struct timeval)) + CMSG_SPACE(sizeof(int))]; + char hnamebuf[MAXHOSTNAMELEN], snamebuf[MAXHOSTNAMELEN]; #ifdef IP_OPTIONS - char rspace[3 + 4 * NROUTES + 1]; /* record route space */ + char rspace[MAX_IPOPTLEN]; /* record route space */ +#endif + unsigned char loop, mttl; + + payload = source = NULL; +#ifdef IPSEC_POLICY_IPSEC + policy_in = policy_out = NULL; #endif - preload = 0; - datap = &outpack[8 + sizeof(struct timeval)]; - while ((ch = getopt(argc, argv, "Rc:dfh:i:l:np:qrs:v")) != EOF) + /* + * Do the stuff that we need root priv's for *first*, and + * then drop our setuid bit. Save error reporting for + * after arg parsing. + */ + if (getuid()) + s = socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); + else + s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); + sockerrno = errno; + + if (setuid(getuid()) != 0) + err(EX_NOPERM, "setuid() failed"); + uid = getuid(); + + alarmtimeout = df = preload = tos = 0; + + outpack = outpackhdr + sizeof(struct ip); + while ((ch = getopt(argc, argv, + "Aab:Cc:DdfG:g:h:I:i:k:Ll:M:m:nop:QqRrS:s:T:t:vW:z:" +#ifdef IPSEC +#ifdef IPSEC_POLICY_IPSEC + "P:" +#endif /*IPSEC_POLICY_IPSEC*/ +#endif /*IPSEC*/ +#if defined(IP_FORCE_OUT_IFP) && TARGET_OS_EMBEDDED + "B:" +#endif /* IP_FORCE_OUT_IFP */ + )) != -1) + { switch(ch) { + case 'A': + options |= F_MISSED; + break; + case 'a': + options |= F_AUDIBLE; + break; +#if defined(IP_FORCE_OUT_IFP) && TARGET_OS_EMBEDDED + case 'B': + (void) snprintf(boundifname, sizeof (boundifname), + "%s", optarg); + break; +#endif /* IP_FORCE_OUT_IFP */ + case 'b': + boundif = optarg; + break; + case 'C': + nocell++; + break; case 'c': - npackets = atoi(optarg); - if (npackets <= 0) { - (void)fprintf(stderr, - "ping: bad number of packets to transmit.\n"); - exit(1); - } + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > LONG_MAX || !ultmp) + errx(EX_USAGE, + "invalid count of packets to transmit: `%s'", + optarg); + npackets = ultmp; + break; + case 'D': + options |= F_HDRINCL; + df = 1; break; case 'd': options |= F_SO_DEBUG; break; case 'f': - if (getuid()) { - (void)fprintf(stderr, - "ping: %s\n", strerror(EPERM)); - exit(1); + if (uid) { + errno = EPERM; + err(EX_NOPERM, "-f flag"); } options |= F_FLOOD; setbuf(stdout, (char *)NULL); break; - case 'i': /* wait between sending packets */ - interval = atoi(optarg); - if (interval <= 0) { - (void)fprintf(stderr, - "ping: bad timing interval.\n"); - exit(1); + case 'G': /* Maximum packet size for ping sweep */ + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg) + errx(EX_USAGE, "invalid packet size: `%s'", + optarg); +#ifndef __APPLE__ + if (uid != 0 && ultmp > DEFDATALEN) { + errno = EPERM; + err(EX_NOPERM, + "packet size too large: %lu > %u", + ultmp, DEFDATALEN); + } +#endif /* __APPLE__ */ + options |= F_SWEEP; + sweepmax = ultmp; + break; + case 'g': /* Minimum packet size for ping sweep */ + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg) + errx(EX_USAGE, "invalid packet size: `%s'", + optarg); +#ifndef __APPLE__ + if (uid != 0 && ultmp > DEFDATALEN) { + errno = EPERM; + err(EX_NOPERM, + "packet size too large: %lu > %u", + ultmp, DEFDATALEN); + } +#endif /* __APPLE__ */ + options |= F_SWEEP; + sweepmin = ultmp; + break; + case 'h': /* Packet size increment for ping sweep */ + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp < 1) + errx(EX_USAGE, "invalid increment size: `%s'", + optarg); +#ifndef __APPLE__ + if (uid != 0 && ultmp > DEFDATALEN) { + errno = EPERM; + err(EX_NOPERM, + "packet size too large: %lu > %u", + ultmp, DEFDATALEN); } +#endif /* __APPLE__ */ + options |= F_SWEEP; + sweepincr = ultmp; + break; + case 'I': /* multicast interface */ + if (inet_aton(optarg, &ifaddr) == 0) + errx(EX_USAGE, + "invalid multicast interface: `%s'", + optarg); + options |= F_MIF; + break; + case 'i': /* wait between sending packets */ + t = strtod(optarg, &ep) * 1000.0; + if (*ep || ep == optarg || t > (double)INT_MAX) + errx(EX_USAGE, "invalid timing interval: `%s'", + optarg); options |= F_INTERVAL; + interval = (int)t; + if (uid && interval < 100) { + errno = EPERM; + err(EX_NOPERM, "-i interval too short"); + } + break; + case 'k': + how_traffic_class++; + traffic_class = str2svc(optarg); + if (traffic_class == UINT32_MAX) + errx(EX_USAGE, "bad traffic class: `%s'", + optarg); + break; + case 'L': + options |= F_NOLOOP; + loop = 0; break; case 'l': - if (getuid()) { - (void)fprintf(stderr, - "ping: %s\n", strerror(EPERM)); - exit(1); + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > INT_MAX) + errx(EX_USAGE, + "invalid preload value: `%s'", optarg); + if (uid) { + errno = EPERM; + err(EX_NOPERM, "-l flag"); } - preload = atoi(optarg); - if (preload < 0) { - (void)fprintf(stderr, - "ping: bad preload value.\n"); - exit(1); + preload = ultmp; + break; + case 'M': + switch(optarg[0]) { + case 'M': + case 'm': + options |= F_MASK; + break; + case 'T': + case 't': + options |= F_TIME; + break; + default: + errx(EX_USAGE, "invalid message: `%c'", optarg[0]); + break; } break; + case 'm': /* TTL */ + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > MAXTTL) + errx(EX_USAGE, "invalid TTL: `%s'", optarg); + ttl = ultmp; + options |= F_TTL; + break; case 'n': options |= F_NUMERIC; break; + case 'o': + options |= F_ONCE; + break; +#ifdef IPSEC +#ifdef IPSEC_POLICY_IPSEC + case 'P': + options |= F_POLICY; + if (!strncmp("in", optarg, 2)) + policy_in = strdup(optarg); + else if (!strncmp("out", optarg, 3)) + policy_out = strdup(optarg); + else + errx(1, "invalid security policy"); + break; +#endif /*IPSEC_POLICY_IPSEC*/ +#endif /*IPSEC*/ case 'p': /* fill buffer with user pattern */ options |= F_PINGFILLED; - fill((char *)datap, optarg); - break; + payload = optarg; + break; + case 'Q': + options |= F_QUIET2; + break; case 'q': options |= F_QUIET; break; @@ -234,235 +499,669 @@ main(argc, argv) case 'r': options |= F_SO_DONTROUTE; break; + case 'S': + source = optarg; + break; case 's': /* size of packet to send */ - datalen = atoi(optarg); - if (datalen > MAXPACKET) { - (void)fprintf(stderr, - "ping: packet size too large.\n"); - exit(1); - } - if (datalen <= 0) { - (void)fprintf(stderr, - "ping: illegal packet size.\n"); - exit(1); + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg) + errx(EX_USAGE, "invalid packet size: `%s'", + optarg); +#ifndef __APPLE__ + if (uid != 0 && ultmp > DEFDATALEN) { + errno = EPERM; + err(EX_NOPERM, + "packet size too large: %lu > %u", + ultmp, DEFDATALEN); } +#endif /* __APPLE__ */ + datalen = ultmp; + break; + case 'T': /* multicast TTL */ + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > MAXTTL) + errx(EX_USAGE, "invalid multicast TTL: `%s'", + optarg); + mttl = ultmp; + options |= F_MTTL; + break; + case 't': + alarmtimeout = strtoul(optarg, &ep, 0); + if ((alarmtimeout < 1) || (alarmtimeout == ULONG_MAX)) + errx(EX_USAGE, "invalid timeout: `%s'", + optarg); + if (alarmtimeout > MAXALARM) + errx(EX_USAGE, "invalid timeout: `%s' > %d", + optarg, MAXALARM); + alarm((unsigned int)alarmtimeout); break; case 'v': options |= F_VERBOSE; break; + case 'W': /* wait ms for answer */ + t = strtod(optarg, &ep); + if (*ep || ep == optarg || t > (double)INT_MAX) + errx(EX_USAGE, "invalid timing interval: `%s'", + optarg); + options |= F_WAITTIME; + waittime = (int)t; + break; + case 'z': + options |= F_HDRINCL; + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > MAXTOS) + errx(EX_USAGE, "invalid TOS: `%s'", optarg); + tos = ultmp; + break; default: usage(); } - argc -= optind; - argv += optind; + } + + if (boundif != NULL && (ifscope = if_nametoindex(boundif)) == 0) + errx(1, "bad interface name"); - if (argc != 1) + if (argc - optind != 1) usage(); - target = *argv; + target = argv[optind]; + + switch (options & (F_MASK|F_TIME)) { + case 0: break; + case F_MASK: + icmp_type = ICMP_MASKREQ; + icmp_type_rsp = ICMP_MASKREPLY; + phdr_len = MASK_LEN; + if (!(options & F_QUIET)) + (void)printf("ICMP_MASKREQ\n"); + break; + case F_TIME: + icmp_type = ICMP_TSTAMP; + icmp_type_rsp = ICMP_TSTAMPREPLY; + phdr_len = TS_LEN; + if (!(options & F_QUIET)) + (void)printf("ICMP_TSTAMP\n"); + break; + default: + errx(EX_USAGE, "ICMP_TSTAMP and ICMP_MASKREQ are exclusive."); + break; + } + icmp_len = sizeof(struct ip) + ICMP_MINLEN + phdr_len; + if (options & F_RROUTE) + icmp_len += MAX_IPOPTLEN; + maxpayload = IP_MAXPACKET - icmp_len; + if (datalen > maxpayload) + errx(EX_USAGE, "packet size too large: %d > %d", datalen, + maxpayload); + send_len = icmp_len + datalen; + datap = &outpack[ICMP_MINLEN + phdr_len + TIMEVAL_LEN]; + if (options & F_PINGFILLED) { + fill((char *)datap, payload); + } + if (source) { + bzero((char *)&sock_in, sizeof(sock_in)); + sock_in.sin_family = AF_INET; + if (inet_aton(source, &sock_in.sin_addr) != 0) { + shostname = source; + } else { + hp = gethostbyname2(source, AF_INET); + if (!hp) + errx(EX_NOHOST, "cannot resolve %s: %s", + source, hstrerror(h_errno)); + + sock_in.sin_len = sizeof sock_in; + if ((unsigned)hp->h_length > sizeof(sock_in.sin_addr) || + hp->h_length < 0) + errx(1, "gethostbyname2: illegal address"); + memcpy(&sock_in.sin_addr, hp->h_addr_list[0], + sizeof(sock_in.sin_addr)); + (void)strncpy(snamebuf, hp->h_name, + sizeof(snamebuf) - 1); + snamebuf[sizeof(snamebuf) - 1] = '\0'; + shostname = snamebuf; + } + if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1) + err(1, "bind"); + } - memset(&whereto, 0, sizeof(struct sockaddr)); - to = (struct sockaddr_in *)&whereto; + bzero(&whereto, sizeof(whereto)); + to = &whereto; to->sin_family = AF_INET; - to->sin_addr.s_addr = inet_addr(target); - if (to->sin_addr.s_addr != (u_int)-1) + to->sin_len = sizeof *to; + if (inet_aton(target, &to->sin_addr) != 0) { hostname = target; - else { - hp = gethostbyname(target); - if (!hp) { - (void)fprintf(stderr, - "ping: unknown host %s\n", target); - exit(1); - } - to->sin_family = hp->h_addrtype; - memmove(&to->sin_addr, hp->h_addr, hp->h_length); + } else { + hp = gethostbyname2(target, AF_INET); + if (!hp) + errx(EX_NOHOST, "cannot resolve %s: %s", + target, hstrerror(h_errno)); + + if ((unsigned)hp->h_length > sizeof(to->sin_addr)) + errx(1, "gethostbyname2 returned an illegal address"); + memcpy(&to->sin_addr, hp->h_addr_list[0], sizeof to->sin_addr); (void)strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1); + hnamebuf[sizeof(hnamebuf) - 1] = '\0'; hostname = hnamebuf; } - if (options & F_FLOOD && options & F_INTERVAL) { - (void)fprintf(stderr, - "ping: -f and -i incompatible options.\n"); - exit(1); - } - - if (datalen >= sizeof(struct timeval)) /* can we time transfer */ + do { + struct ifaddrs *ifa_list, *ifa; + + if (IN_MULTICAST(ntohl(whereto.sin_addr.s_addr)) || whereto.sin_addr.s_addr == INADDR_BROADCAST) { + no_dup = 1; + break; + } + + if (getifaddrs(&ifa_list) == -1) + break; + for (ifa = ifa_list; ifa; ifa = ifa->ifa_next) { + if (ifa->ifa_addr->sa_family != AF_INET) + continue; + if ((ifa->ifa_flags & IFF_BROADCAST) == 0 || ifa->ifa_broadaddr == NULL) + continue; + if (whereto.sin_addr.s_addr != ((struct sockaddr_in*)ifa->ifa_broadaddr)->sin_addr.s_addr) + continue; + no_dup = 1; + break; + } + + freeifaddrs(ifa_list); + } while (0); + + if (options & F_FLOOD && options & F_INTERVAL) + errx(EX_USAGE, "-f and -i: incompatible options"); + + if (options & F_FLOOD && IN_MULTICAST(ntohl(to->sin_addr.s_addr))) + errx(EX_USAGE, + "-f flag cannot be used with multicast destination"); + if (options & (F_MIF | F_NOLOOP | F_MTTL) + && !IN_MULTICAST(ntohl(to->sin_addr.s_addr))) + errx(EX_USAGE, + "-I, -L, -T flags cannot be used with unicast destination"); + + if (datalen >= TIMEVAL_LEN) /* can we time transfer */ timing = 1; - packlen = datalen + MAXIPLEN + MAXICMPLEN; - if (!(packet = (u_char *)malloc((u_int)packlen))) { - (void)fprintf(stderr, "ping: out of memory.\n"); - exit(1); - } + if (!(options & F_PINGFILLED)) - for (i = 8; i < datalen; ++i) + for (i = TIMEVAL_LEN; i < MAX(datalen, sweepmax); ++i) *datap++ = i; ident = getpid() & 0xFFFF; - if (!(proto = getprotobyname("icmp"))) { - (void)fprintf(stderr, "ping: unknown protocol icmp.\n"); - exit(1); - } - if ((s = socket(AF_INET, SOCK_RAW, proto->p_proto)) < 0) { - perror("ping: socket"); - exit(1); + if (s < 0) { + errno = sockerrno; + err(EX_OSERR, "socket"); } hold = 1; + (void) setsockopt(s, SOL_SOCKET, SO_RECV_ANYIF, (char *)&hold, + sizeof(hold)); + if (ifscope != 0) { + if (setsockopt(s, IPPROTO_IP, IP_BOUND_IF, + (char *)&ifscope, sizeof (ifscope)) != 0) + err(EX_OSERR, "setsockopt(IP_BOUND_IF)"); + } +#if defined(IP_FORCE_OUT_IFP) && TARGET_OS_EMBEDDED + else if (boundifname[0] != 0) { + if (setsockopt(s, IPPROTO_IP, IP_FORCE_OUT_IFP, boundifname, + sizeof (boundifname)) != 0) + err(EX_OSERR, "setsockopt(IP_FORCE_OUT_IFP)"); + } +#endif /* IP_FORCE_OUT_IFP */ + if (nocell) { + if (setsockopt(s, IPPROTO_IP, IP_NO_IFT_CELLULAR, + (char *)&nocell, sizeof (nocell)) != 0) + err(EX_OSERR, "setsockopt(IP_NO_IFT_CELLULAR)"); + } if (options & F_SO_DEBUG) (void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold, sizeof(hold)); if (options & F_SO_DONTROUTE) (void)setsockopt(s, SOL_SOCKET, SO_DONTROUTE, (char *)&hold, sizeof(hold)); + if (how_traffic_class < 2 && traffic_class >= 0) { + (void) setsockopt(s, SOL_SOCKET, SO_TRAFFIC_CLASS, + (void *)&traffic_class, sizeof (traffic_class)); + } + if (how_traffic_class > 0) { + int on = 1; + (void) setsockopt(s, SOL_SOCKET, SO_RECV_TRAFFIC_CLASS, + (void *)&on, sizeof (on)); + } +#ifdef IPSEC +#ifdef IPSEC_POLICY_IPSEC + if (options & F_POLICY) { + char *buf; + if (policy_in != NULL) { + buf = ipsec_set_policy(policy_in, strlen(policy_in)); + if (buf == NULL) + errx(EX_CONFIG, "%s", ipsec_strerror()); + if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, + buf, ipsec_get_policylen(buf)) < 0) + err(EX_CONFIG, + "ipsec policy cannot be configured"); + free(buf); + } + if (policy_out != NULL) { + buf = ipsec_set_policy(policy_out, strlen(policy_out)); + if (buf == NULL) + errx(EX_CONFIG, "%s", ipsec_strerror()); + if (setsockopt(s, IPPROTO_IP, IP_IPSEC_POLICY, + buf, ipsec_get_policylen(buf)) < 0) + err(EX_CONFIG, + "ipsec policy cannot be configured"); + free(buf); + } + } +#endif /*IPSEC_POLICY_IPSEC*/ +#endif /*IPSEC*/ + + if (options & F_HDRINCL) { + ip = (struct ip*)outpackhdr; + if (!(options & (F_TTL | F_MTTL))) { + mib[0] = CTL_NET; + mib[1] = PF_INET; + mib[2] = IPPROTO_IP; + mib[3] = IPCTL_DEFTTL; + sz = sizeof(ttl); + if (sysctl(mib, 4, &ttl, &sz, NULL, 0) == -1) + err(1, "sysctl(net.inet.ip.ttl)"); + } + setsockopt(s, IPPROTO_IP, IP_HDRINCL, &hold, sizeof(hold)); + ip->ip_v = IPVERSION; + ip->ip_hl = sizeof(struct ip) >> 2; + ip->ip_tos = tos; + ip->ip_id = 0; + ip->ip_off = df ? IP_DF : 0; + ip->ip_ttl = ttl; + ip->ip_p = IPPROTO_ICMP; + ip->ip_src.s_addr = source ? sock_in.sin_addr.s_addr : INADDR_ANY; + ip->ip_dst = to->sin_addr; + } /* record route option */ if (options & F_RROUTE) { #ifdef IP_OPTIONS + bzero(rspace, sizeof(rspace)); rspace[IPOPT_OPTVAL] = IPOPT_RR; - rspace[IPOPT_OLEN] = sizeof(rspace)-1; + rspace[IPOPT_OLEN] = sizeof(rspace) - 1; rspace[IPOPT_OFFSET] = IPOPT_MINOFF; + rspace[sizeof(rspace) - 1] = IPOPT_EOL; if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace, - sizeof(rspace)) < 0) { - perror("ping: record route"); - exit(1); - } + sizeof(rspace)) < 0) + err(EX_OSERR, "setsockopt IP_OPTIONS"); #else - (void)fprintf(stderr, - "ping: record route not available in this implementation.\n"); - exit(1); + errx(EX_UNAVAILABLE, + "record route not available in this implementation"); #endif /* IP_OPTIONS */ } + if (options & F_TTL) { + if (setsockopt(s, IPPROTO_IP, IP_TTL, &ttl, + sizeof(ttl)) < 0) { + err(EX_OSERR, "setsockopt IP_TTL"); + } + } + if (options & F_NOLOOP) { + if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, + sizeof(loop)) < 0) { + err(EX_OSERR, "setsockopt IP_MULTICAST_LOOP"); + } + } + if (options & F_MTTL) { + if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &mttl, + sizeof(mttl)) < 0) { + err(EX_OSERR, "setsockopt IP_MULTICAST_TTL"); + } + } + if (options & F_MIF) { + if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF, &ifaddr, + sizeof(ifaddr)) < 0) { + err(EX_OSERR, "setsockopt IP_MULTICAST_IF"); + } + } +#ifdef SO_TIMESTAMP + { int on = 1; + if (setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)) < 0) + err(EX_OSERR, "setsockopt SO_TIMESTAMP"); + } +#endif + if (sweepmax) { + if (sweepmin >= sweepmax) + errx(EX_USAGE, "Maximum packet size must be greater than the minimum packet size"); + + if (datalen != DEFDATALEN) + errx(EX_USAGE, "Packet size and ping sweep are mutually exclusive"); + + if (npackets > 0) { + snpackets = npackets; + npackets = 0; + } else + snpackets = 1; + datalen = sweepmin; + send_len = icmp_len + sweepmin; + } + if (options & F_SWEEP && !sweepmax) + errx(EX_USAGE, "Maximum sweep size must be specified"); + /* * When pinging the broadcast address, you can get a lot of answers. * Doing something so evil is useful if you are trying to stress the * ethernet, or just want to fill the arp cache to get some stuff for - * /etc/ethers. + * /etc/ethers. But beware: RFC 1122 allows hosts to ignore broadcast + * or multicast pings if they wish. */ - (void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, &packlen, sizeof(packlen)); - if (to->sin_family == AF_INET) - (void)printf("PING %s (%s): %d data bytes\n", hostname, - inet_ntoa(*(struct in_addr *)&to->sin_addr.s_addr), - datalen); - else - (void)printf("PING %s: %d data bytes\n", hostname, datalen); + /* + * XXX receive buffer needs undetermined space for mbuf overhead + * as well. + */ + hold = IP_MAXPACKET + 128; + (void)setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char *)&hold, + sizeof(hold)); + if (uid == 0) + (void)setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&hold, + sizeof(hold)); - (void)signal(SIGINT, finish); - (void)signal(SIGALRM, catcher); + if (to->sin_family == AF_INET) { + (void)printf("PING %s (%s)", hostname, + inet_ntoa(to->sin_addr)); + if (source) + (void)printf(" from %s", shostname); + if (sweepmax) + (void)printf(": (%d ... %d) data bytes\n", + sweepmin, sweepmax); + else + (void)printf(": %d data bytes\n", datalen); + + } else { + if (sweepmax) + (void)printf("PING %s: (%d ... %d) data bytes\n", + hostname, sweepmin, sweepmax); + else + (void)printf("PING %s: %d data bytes\n", hostname, datalen); + } + + /* + * Use sigaction() instead of signal() to get unambiguous semantics, + * in particular with SA_RESTART not set. + */ - while (preload--) /* fire off them quickies */ - pinger(); + sigemptyset(&si_sa.sa_mask); + si_sa.sa_flags = 0; + + si_sa.sa_handler = stopit; + if (sigaction(SIGINT, &si_sa, 0) == -1) { + err(EX_OSERR, "sigaction SIGINT"); + } + si_sa.sa_handler = stopit; + if (sigaction(SIGQUIT, &si_sa, 0) == -1) { + err(EX_OSERR, "sigaction SIGQUIT"); + } + + si_sa.sa_handler = status; + if (sigaction(SIGINFO, &si_sa, 0) == -1) { + err(EX_OSERR, "sigaction SIGINFO"); + } - if ((options & F_FLOOD) == 0) - catcher(); /* start things going */ + if (alarmtimeout > 0) { + si_sa.sa_handler = stopit; + if (sigaction(SIGALRM, &si_sa, 0) == -1) + err(EX_OSERR, "sigaction SIGALRM"); + } - for (;;) { - struct sockaddr_in from; - register int cc; - int fromlen; - sigset_t omask, nmask; + bzero(&msg, sizeof(msg)); + msg.msg_name = (caddr_t)&from; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; +#ifdef SO_TIMESTAMP + msg.msg_control = (caddr_t)ctrl; +#endif + iov.iov_base = packet; + iov.iov_len = IP_MAXPACKET; - if (options & F_FLOOD) { + if (preload == 0) + pinger(); /* send the first ping */ + else { + if (npackets != 0 && preload > npackets) + preload = npackets; + while (preload--) /* fire off them quickies */ pinger(); - timeout.tv_sec = 0; - timeout.tv_usec = 10000; - fdmask = 1 << s; - if (select(s + 1, (fd_set *)&fdmask, (fd_set *)NULL, - (fd_set *)NULL, &timeout) < 1) - continue; + } + (void)gettimeofday(&last, NULL); + + if (options & F_FLOOD) { + intvl.tv_sec = 0; + intvl.tv_usec = 10000; + } else { + intvl.tv_sec = interval / 1000; + intvl.tv_usec = interval % 1000 * 1000; + } + + almost_done = 0; + while (!finish_up) { + struct timeval now, timeout; + fd_set rfds; + int cc, n; + int tc = -1; + + check_status(); + if ((unsigned)s >= FD_SETSIZE) + errx(EX_OSERR, "descriptor too large"); + FD_ZERO(&rfds); + FD_SET(s, &rfds); + (void)gettimeofday(&now, NULL); + timeout.tv_sec = last.tv_sec + intvl.tv_sec - now.tv_sec; + timeout.tv_usec = last.tv_usec + intvl.tv_usec - now.tv_usec; + while (timeout.tv_usec < 0) { + timeout.tv_usec += 1000000; + timeout.tv_sec--; } - fromlen = sizeof(from); - if ((cc = recvfrom(s, (char *)packet, packlen, 0, - (struct sockaddr *)&from, &fromlen)) < 0) { - if (errno == EINTR) + while (timeout.tv_usec >= 1000000) { + timeout.tv_usec -= 1000000; + timeout.tv_sec++; + } + if (timeout.tv_sec < 0) + timeout.tv_sec = timeout.tv_usec = 0; + n = select(s + 1, &rfds, NULL, NULL, &timeout); + if (n < 0) + continue; /* Must be EINTR. */ + if (n == 1) { + struct timeval *tv = NULL; +#ifdef SO_TIMESTAMP + struct cmsghdr *cmsg = (struct cmsghdr *)&ctrl; + + msg.msg_controllen = sizeof(ctrl); +#endif + msg.msg_namelen = sizeof(from); + if ((cc = recvmsg(s, &msg, 0)) < 0) { + if (errno == EINTR) + continue; + warn("recvmsg"); continue; - perror("ping: recvfrom"); - continue; + } + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) { +#ifdef SO_TIMESTAMP + if (cmsg->cmsg_level == SOL_SOCKET && + cmsg->cmsg_type == SCM_TIMESTAMP && + cmsg->cmsg_len == CMSG_LEN(sizeof *tv)) { + /* Copy to avoid alignment problems: */ + memcpy(&now, CMSG_DATA(cmsg), sizeof(now)); + tv = &now; + } +#endif + if (cmsg->cmsg_level == SOL_SOCKET && + cmsg->cmsg_type == SO_TRAFFIC_CLASS && + cmsg->cmsg_len == CMSG_LEN(sizeof(int))) { + /* Copy to avoid alignment problems: */ + memcpy(&tc, CMSG_DATA(cmsg), sizeof(tc)); + } + } + if (tv == NULL) { + (void)gettimeofday(&now, NULL); + tv = &now; + } + pr_pack((char *)packet, cc, &from, tv, tc); + if ((options & F_ONCE && nreceived) || + (npackets && nreceived >= npackets)) + break; + } + if (n == 0 || options & F_FLOOD) { + if (sweepmax && sntransmitted == snpackets) { + datalen += sweepincr; + if (datalen > sweepmax) + break; + send_len = icmp_len + datalen; + sntransmitted = 0; + } + if (!npackets || ntransmitted < npackets) + pinger(); + else { + if (almost_done) + break; + almost_done = 1; + intvl.tv_usec = 0; + if (nreceived) { + intvl.tv_sec = 2 * tmax / 1000; + if (!intvl.tv_sec) + intvl.tv_sec = 1; + } else { + intvl.tv_sec = waittime / 1000; + intvl.tv_usec = waittime % 1000 * 1000; + } + } + (void)gettimeofday(&last, NULL); + if (ntransmitted - nreceived - 1 > nmissedmax) { + nmissedmax = ntransmitted - nreceived - 1; + if (options & F_MISSED) + (void)write(STDOUT_FILENO, &BBELL, 1); + if (!(options & F_QUIET)) { + printf("Request timeout for icmp_seq %u\n", + (uint16_t)(ntransmitted - 2)); + if (!(options & F_FLOOD)) + (void)fflush(stdout); + } + } } - sigemptyset(&nmask); - sigaddset(&nmask, SIGALRM); - sigprocmask(SIG_BLOCK, &nmask, &omask); - pr_pack((char *)packet, cc, &from); - sigprocmask(SIG_SETMASK, &omask, NULL); - if (npackets && nreceived >= npackets) - break; } finish(); /* NOTREACHED */ + exit(0); /* Make the compiler happy */ } /* - * catcher -- - * This routine causes another PING to be transmitted, and then - * schedules another SIGALRM for 1 second from now. - * - * bug -- - * Our sense of time will slowly skew (i.e., packets will not be - * launched exactly at 1-second intervals). This does not affect the - * quality of the delay and loss statistics. + * stopit -- + * Set the global bit that causes the main loop to quit. + * Do NOT call finish() from here, since finish() does far too much + * to be called from a signal handler. */ void -catcher() +stopit(int sig __unused) { - int waittime; - pinger(); - (void)signal(SIGALRM, catcher); - if (!npackets || ntransmitted < npackets) - alarm((u_int)interval); - else { - if (nreceived) { - waittime = 2 * tmax / 1000; - if (!waittime) - waittime = 1; - } else - waittime = MAXWAIT; - (void)signal(SIGALRM, finish); - (void)alarm((u_int)waittime); - } + /* + * When doing reverse DNS lookups, the finish_up flag might not + * be noticed for a while. Just exit if we get a second SIGINT. + */ + if (!(options & F_NUMERIC) && finish_up) + _exit(nreceived ? 0 : 2); + finish_up = 1; } /* * pinger -- * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet * will be added on by the kernel. The ID field is our UNIX process ID, - * and the sequence number is an ascending integer. The first 8 bytes - * of the data portion are used to hold a UNIX "timeval" struct in VAX - * byte-order, to compute the round-trip time. + * and the sequence number is an ascending integer. The first TIMEVAL_LEN + * bytes of the data portion are used to hold a UNIX "timeval" struct in + * host byte-order, to compute the round-trip time. */ -pinger() +static void +pinger(void) { - register struct icmp *icp; - register int cc; - int i; + struct timeval now; + struct tv32 tv32; + struct ip *ip; + struct icmp *icp; + int cc, i; + u_char *packet; + packet = outpack; icp = (struct icmp *)outpack; - icp->icmp_type = ICMP_ECHO; + icp->icmp_type = icmp_type; icp->icmp_code = 0; icp->icmp_cksum = 0; - icp->icmp_seq = ntransmitted++; + icp->icmp_seq = htons(ntransmitted); icp->icmp_id = ident; /* ID */ - CLR(icp->icmp_seq % mx_dup_ck); + CLR(ntransmitted % mx_dup_ck); + + if ((options & F_TIME) || timing) { + (void)gettimeofday(&now, NULL); - if (timing) - (void)gettimeofday((struct timeval *)&outpack[8], - (struct timezone *)NULL); + tv32.tv32_sec = htonl(now.tv_sec); + tv32.tv32_usec = htonl(now.tv_usec); + if (options & F_TIME) + icp->icmp_otime = htonl((now.tv_sec % (24*60*60)) + * 1000 + now.tv_usec / 1000); + if (timing) + bcopy((void *)&tv32, + (void *)&outpack[ICMP_MINLEN + phdr_len], + sizeof(tv32)); + } - cc = datalen + 8; /* skips ICMP portion */ + cc = ICMP_MINLEN + phdr_len + datalen; /* compute ICMP checksum here */ icp->icmp_cksum = in_cksum((u_short *)icp, cc); - i = sendto(s, (char *)outpack, cc, 0, &whereto, - sizeof(struct sockaddr)); - + if (options & F_HDRINCL) { + cc += sizeof(struct ip); + ip = (struct ip *)outpackhdr; + ip->ip_len = cc; + ip->ip_sum = in_cksum((u_short *)outpackhdr, cc); + packet = outpackhdr; + } + if (how_traffic_class > 1 && traffic_class >= 0) { + struct msghdr msg; + struct iovec iov; + char *cmbuf[CMSG_SPACE(sizeof(int))]; + struct cmsghdr *cm = (struct cmsghdr *)cmbuf; + + msg.msg_name = &whereto; + msg.msg_namelen = sizeof(whereto); + + iov.iov_base = packet; + iov.iov_len = cc; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + cm->cmsg_len = CMSG_LEN(sizeof(int)); + cm->cmsg_level = SOL_SOCKET; + cm->cmsg_type = SO_TRAFFIC_CLASS; + *(int *)CMSG_DATA(cm) = traffic_class; + msg.msg_control = cm; + msg.msg_controllen = CMSG_SPACE(sizeof(int)); + + msg.msg_flags = 0; + + i = sendmsg(s, &msg, 0); + } else { + i = sendto(s, (char *)packet, cc, 0, (struct sockaddr *)&whereto, + sizeof(whereto)); + } if (i < 0 || i != cc) { - if (i < 0) - perror("ping: sendto"); - (void)printf("ping: wrote %s %d chars, ret=%d\n", - hostname, cc, i); + if (i < 0) { + if (options & F_FLOOD && errno == ENOBUFS) { + usleep(FLOOD_BACKOFF); + return; + } + warn("sendto"); + } else { + warn("%s: partial write: %d of %d bytes", + hostname, i, cc); + } } + ntransmitted++; + sntransmitted++; if (!(options & F_QUIET) && options & F_FLOOD) (void)write(STDOUT_FILENO, &DOT, 1); } @@ -474,105 +1173,191 @@ pinger() * which arrive ('tis only fair). This permits multiple copies of this * program to be run without having intermingled output (or statistics!). */ -pr_pack(buf, cc, from) - char *buf; - int cc; - struct sockaddr_in *from; +static void +pr_pack(char *buf, int cc, struct sockaddr_in *from, struct timeval *tv, + int tc) { - register struct icmp *icp; - register u_long l; - register u_int i, j; - register u_char *cp,*dp; - static int old_rrlen; - static char old_rr[MAX_IPOPTLEN]; + struct in_addr ina; + u_char *cp, *dp; + struct icmp *icp; struct ip *ip; - struct timeval tv, *tp; + const void *tp; double triptime; - int hlen, dupflag; - - (void)gettimeofday(&tv, (struct timezone *)NULL); + int dupflag, hlen, i, j, recv_len, seq; + static int old_rrlen; + static char old_rr[MAX_IPOPTLEN]; /* Check the IP header */ ip = (struct ip *)buf; hlen = ip->ip_hl << 2; + recv_len = cc; if (cc < hlen + ICMP_MINLEN) { if (options & F_VERBOSE) - (void)fprintf(stderr, - "ping: packet too short (%d bytes) from %s\n", cc, - inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr)); + warn("packet too short (%d bytes) from %s", cc, + inet_ntoa(from->sin_addr)); return; } /* Now the ICMP part */ cc -= hlen; icp = (struct icmp *)(buf + hlen); - if (icp->icmp_type == ICMP_ECHOREPLY) { + if (icp->icmp_type == icmp_type_rsp) { if (icp->icmp_id != ident) return; /* 'Twas not our ECHO */ ++nreceived; + triptime = 0.0; if (timing) { + struct timeval tv1; + struct tv32 tv32; #ifndef icmp_data - tp = (struct timeval *)&icp->icmp_ip; + tp = &icp->icmp_ip; #else - tp = (struct timeval *)icp->icmp_data; + tp = icp->icmp_data; #endif - tvsub(&tv, tp); - triptime = ((double)tv.tv_sec) * 1000.0 + - ((double)tv.tv_usec) / 1000.0; - tsum += triptime; - if (triptime < tmin) - tmin = triptime; - if (triptime > tmax) - tmax = triptime; + tp = (const char *)tp + phdr_len; + + if (cc - ICMP_MINLEN - phdr_len >= sizeof(tv1)) { + /* Copy to avoid alignment problems: */ + memcpy(&tv32, tp, sizeof(tv32)); + tv1.tv_sec = ntohl(tv32.tv32_sec); + tv1.tv_usec = ntohl(tv32.tv32_usec); + tvsub(tv, &tv1); + triptime = ((double)tv->tv_sec) * 1000.0 + + ((double)tv->tv_usec) / 1000.0; + tsum += triptime; + tsumsq += triptime * triptime; + if (triptime < tmin) + tmin = triptime; + if (triptime > tmax) + tmax = triptime; + } else + timing = 0; } - if (TST(icp->icmp_seq % mx_dup_ck)) { + seq = ntohs(icp->icmp_seq); + + if (TST(seq % mx_dup_ck)) { ++nrepeats; --nreceived; dupflag = 1; } else { - SET(icp->icmp_seq % mx_dup_ck); + SET(seq % mx_dup_ck); dupflag = 0; } if (options & F_QUIET) return; + + if (options & F_WAITTIME && triptime > waittime) { + ++nrcvtimeout; + return; + } if (options & F_FLOOD) (void)write(STDOUT_FILENO, &BSPACE, 1); else { + int seq_sent_len = send_len; + int seq_datalen = datalen; + + if (sweepmax != 0) { + /* + * When sweeping take in account the length of that + * was sent based on the sequence number + */ + seq_datalen = sweepmin + (seq / snpackets) * sweepincr; + seq_sent_len = icmp_len + seq_datalen; + } (void)printf("%d bytes from %s: icmp_seq=%u", cc, inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr), - icp->icmp_seq); + seq); (void)printf(" ttl=%d", ip->ip_ttl); if (timing) - (void)printf(" time=%g ms", triptime); - if (dupflag) + (void)printf(" time=%.3f ms", triptime); + if (tc != -1) { + (void)printf(" tc=%d", tc); + } + if (dupflag && no_dup == 0) { (void)printf(" (DUP!)"); + } + if (options & F_AUDIBLE) + (void)write(STDOUT_FILENO, &BBELL, 1); + if (options & F_MASK) { + /* Just prentend this cast isn't ugly */ + (void)printf(" mask=%s", + pr_addr(*(struct in_addr *)&(icp->icmp_mask))); + } + if (options & F_TIME) { + (void)printf(" tso=%s", pr_ntime(icp->icmp_otime)); + (void)printf(" tsr=%s", pr_ntime(icp->icmp_rtime)); + (void)printf(" tst=%s", pr_ntime(icp->icmp_ttime)); + } + if (recv_len != seq_sent_len) { + (void)printf( + "\nwrong total length %d instead of %d", + recv_len, seq_sent_len); + } /* check the data */ - cp = (u_char*)&icp->icmp_data[8]; - dp = &outpack[8 + sizeof(struct timeval)]; - for (i = 8; i < datalen; ++i, ++cp, ++dp) { + cp = (u_char*)&icp->icmp_data[phdr_len]; + dp = &outpack[ICMP_MINLEN + phdr_len]; + cc -= ICMP_MINLEN + phdr_len; + i = 0; + if (timing) { /* don't check variable timestamp */ + cp += TIMEVAL_LEN; + dp += TIMEVAL_LEN; + cc -= TIMEVAL_LEN; + i += TIMEVAL_LEN; + } + for (; i < seq_datalen && cc > 0; ++i, ++cp, ++dp, --cc) { if (*cp != *dp) { (void)printf("\nwrong data byte #%d should be 0x%x but was 0x%x", i, *dp, *cp); + (void)printf("\ncp:"); cp = (u_char*)&icp->icmp_data[0]; - for (i = 8; i < datalen; ++i, ++cp) { - if ((i % 32) == 8) + for (i = 0; i < seq_datalen; ++i, ++cp) { + if ((i % 16) == 0) (void)printf("\n\t"); - (void)printf("%x ", *cp); + (void)printf("%2x ", *cp); + } + (void)printf("\ndp:"); + cp = &outpack[ICMP_MINLEN]; + for (i = 0; i < seq_datalen; ++i, ++cp) { + if ((i % 16) == 0) + (void)printf("\n\t"); + (void)printf("%2x ", *cp); } break; } } } } else { - /* We've got something other than an ECHOREPLY */ - if (!(options & F_VERBOSE)) - return; - (void)printf("%d bytes from %s: ", cc, - pr_addr(from->sin_addr.s_addr)); - pr_icmph(icp); + /* + * We've got something other than an ECHOREPLY. + * See if it's a reply to something that we sent. + * We can compare IP destination, protocol, + * and ICMP type and ID. + * + * Only print all the error messages if we are running + * as root to avoid leaking information not normally + * available to those not running as root. + */ +#ifndef icmp_data + struct ip *oip = &icp->icmp_ip; +#else + struct ip *oip = (struct ip *)icp->icmp_data; +#endif + struct icmp *oicmp = (struct icmp *)(oip + 1); + + if (((options & F_VERBOSE) && uid == 0) || + (!(options & F_QUIET2) && + (oip->ip_dst.s_addr == whereto.sin_addr.s_addr) && + (oip->ip_p == IPPROTO_ICMP) && + (oicmp->icmp_type == ICMP_ECHO) && + (oicmp->icmp_id == ident))) { + (void)printf("%d bytes from %s: ", cc, + pr_addr(from->sin_addr)); + pr_icmph(icp); + } else + return; } /* Display any IP options */ @@ -584,74 +1369,72 @@ pr_pack(buf, cc, from) hlen = 0; break; case IPOPT_LSRR: - (void)printf("\nLSRR: "); + case IPOPT_SSRR: + (void)printf(*cp == IPOPT_LSRR ? + "\nLSRR: " : "\nSSRR: "); + j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1; hlen -= 2; - j = *++cp; - ++cp; - if (j > IPOPT_MINOFF) + cp += 2; + if (j >= INADDR_LEN && + j <= hlen - (int)sizeof(struct ip)) { for (;;) { - l = *++cp; - l = (l<<8) + *++cp; - l = (l<<8) + *++cp; - l = (l<<8) + *++cp; - if (l == 0) + bcopy(++cp, &ina.s_addr, INADDR_LEN); + if (ina.s_addr == 0) (void)printf("\t0.0.0.0"); - else - (void)printf("\t%s", pr_addr(ntohl(l))); - hlen -= 4; - j -= 4; - if (j <= IPOPT_MINOFF) - break; - (void)putchar('\n'); - } + else + (void)printf("\t%s", + pr_addr(ina)); + hlen -= INADDR_LEN; + cp += INADDR_LEN - 1; + j -= INADDR_LEN; + if (j < INADDR_LEN) + break; + (void)putchar('\n'); + } + } else + (void)printf("\t(truncated route)\n"); break; case IPOPT_RR: - j = *++cp; /* get length */ - i = *++cp; /* and pointer */ + j = cp[IPOPT_OLEN]; /* get length */ + i = cp[IPOPT_OFFSET]; /* and pointer */ hlen -= 2; + cp += 2; if (i > j) i = j; - i -= IPOPT_MINOFF; - if (i <= 0) + i = i - IPOPT_MINOFF + 1; + if (i < 0 || i > (hlen - (int)sizeof(struct ip))) { + old_rrlen = 0; continue; + } if (i == old_rrlen - && cp == (u_char *)buf + sizeof(struct ip) + 2 - && !memcmp(cp, old_rr, i) + && !bcmp((char *)cp, old_rr, i) && !(options & F_FLOOD)) { (void)printf("\t(same route)"); - i = ((i + 3) / 4) * 4; hlen -= i; cp += i; break; } - if (i < MAX_IPOPTLEN) { - old_rrlen = i; - memcpy(old_rr, cp, i); - } else - old_rrlen = 0; - + old_rrlen = i; + bcopy((char *)cp, old_rr, i); (void)printf("\nRR: "); - j = 0; - for (;;) { - l = *++cp; - l = (l<<8) + *++cp; - l = (l<<8) + *++cp; - l = (l<<8) + *++cp; - if (l == 0) - (void)printf("\t0.0.0.0"); - else - (void)printf("\t%s", pr_addr(ntohl(l))); - hlen -= 4; - i -= 4; - j += 4; - if (i <= 0) - break; - if (j >= MAX_IPOPTLEN) { - (void)printf("\t(truncated route)"); - break; + if (i >= INADDR_LEN && + i <= hlen - (int)sizeof(struct ip)) { + for (;;) { + bcopy(++cp, &ina.s_addr, INADDR_LEN); + if (ina.s_addr == 0) + (void)printf("\t0.0.0.0"); + else + (void)printf("\t%s", + pr_addr(ina)); + hlen -= INADDR_LEN; + cp += INADDR_LEN - 1; + i -= INADDR_LEN; + if (i < INADDR_LEN) + break; + (void)putchar('\n'); } - (void)putchar('\n'); - } + } else + (void)printf("\t(truncated route)"); break; case IPOPT_NOP: (void)printf("\nNOP"); @@ -670,14 +1453,20 @@ pr_pack(buf, cc, from) * in_cksum -- * Checksum routine for Internet Protocol family headers (C Version) */ -in_cksum(addr, len) - u_short *addr; - int len; +u_short +in_cksum(u_short *addr, int len) { - register int nleft = len; - register u_short *w = addr; - register int sum = 0; - u_short answer = 0; + int nleft, sum; + u_short *w; + union { + u_short us; + u_char uc[2]; + } last; + u_short answer; + + nleft = len; + sum = 0; + w = addr; /* * Our algorithm is simple, using a 32 bit accumulator (sum), we add @@ -691,8 +1480,9 @@ in_cksum(addr, len) /* mop up an odd byte, if necessary */ if (nleft == 1) { - *(u_char *)(&answer) = *(u_char *)w ; - sum += answer; + last.uc[0] = *(u_char *)w; + last.uc[1] = 0; + sum += last.us; } /* add back carry outs from top 16 bits to low 16 bits */ @@ -707,9 +1497,10 @@ in_cksum(addr, len) * Subtract 2 timeval structs: out = out - in. Out is assumed to * be >= in. */ -tvsub(out, in) - register struct timeval *out, *in; +static void +tvsub(struct timeval *out, const struct timeval *in) { + if ((out->tv_usec -= in->tv_usec) < 0) { --out->tv_sec; out->tv_usec += 1000000; @@ -717,16 +1508,44 @@ tvsub(out, in) out->tv_sec -= in->tv_sec; } +/* + * status -- + * Print out statistics when SIGINFO is received. + */ + +static void +status(int sig __unused) +{ + + siginfo_p = 1; +} + +static void +check_status(void) +{ + + if (siginfo_p) { + siginfo_p = 0; + (void)fprintf(stderr, "\r%ld/%ld packets received (%.1f%%)", + nreceived, ntransmitted, + ntransmitted ? nreceived * 100.0 / ntransmitted : 0.0); + if (nreceived && timing) + (void)fprintf(stderr, " %.3f min / %.3f avg / %.3f max", + tmin, tsum / (nreceived + nrepeats), tmax); + (void)fprintf(stderr, "\n"); + } +} + /* * finish -- * Print out statistics, and give up. */ -void -finish() +static void +finish(void) { - register int i; (void)signal(SIGINT, SIG_IGN); + (void)signal(SIGALRM, SIG_IGN); (void)putchar('\n'); (void)fflush(stdout); (void)printf("--- %s ping statistics ---\n", hostname); @@ -734,21 +1553,30 @@ finish() (void)printf("%ld packets received, ", nreceived); if (nrepeats) (void)printf("+%ld duplicates, ", nrepeats); - if (ntransmitted) + if (ntransmitted) { if (nreceived > ntransmitted) (void)printf("-- somebody's printing up packets!"); else - (void)printf("%d%% packet loss", - (int) (((ntransmitted - nreceived) * 100) / - ntransmitted)); + (void)printf("%.1f%% packet loss", + ((ntransmitted - nreceived) * 100.0) / + ntransmitted); + } + if (nrcvtimeout) + (void)printf(", %ld packets out of wait time", nrcvtimeout); (void)putchar('\n'); if (nreceived && timing) { - /* Only display average to microseconds */ - i = 1000.0 * tsum / (nreceived + nrepeats); - (void)printf("round-trip min/avg/max = %g/%g/%g ms\n", - tmin, ((double)i) / 1000.0, tmax); + double n = nreceived + nrepeats; + double avg = tsum / n; + double vari = tsumsq / n - avg * avg; + (void)printf( + "round-trip min/avg/max/stddev = %.3f/%.3f/%.3f/%.3f ms\n", + tmin, avg, tmax, sqrt(vari)); } - exit(0); + + if (nreceived) + exit(0); + else + exit(2); } #ifdef notdef @@ -771,9 +1599,10 @@ static char *ttab[] = { * pr_icmph -- * Print a descriptive string about an ICMP header. */ -pr_icmph(icp) - struct icmp *icp; +static void +pr_icmph(struct icmp *icp) { + switch(icp->icmp_type) { case ICMP_ECHOREPLY: (void)printf("Echo Reply\n"); @@ -794,11 +1623,15 @@ pr_icmph(icp) (void)printf("Destination Port Unreachable\n"); break; case ICMP_UNREACH_NEEDFRAG: - (void)printf("frag needed and DF set\n"); + (void)printf("frag needed and DF set (MTU %d)\n", + ntohs(icp->icmp_nextmtu)); break; case ICMP_UNREACH_SRCFAIL: (void)printf("Source Route Failed\n"); break; + case ICMP_UNREACH_FILTER_PROHIB: + (void)printf("Communication prohibited by filter\n"); + break; default: (void)printf("Dest Unreachable, Bad Code: %d\n", icp->icmp_code); @@ -837,7 +1670,7 @@ pr_icmph(icp) (void)printf("Redirect, Bad Code: %d", icp->icmp_code); break; } - (void)printf("(New addr: 0x%08lx)\n", icp->icmp_gwaddr.s_addr); + (void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr)); #ifndef icmp_data pr_retip(&icp->icmp_ip); #else @@ -892,16 +1725,18 @@ pr_icmph(icp) (void)printf("Information Reply\n"); /* XXX ID + Seq */ break; -#ifdef ICMP_MASKREQ case ICMP_MASKREQ: (void)printf("Address Mask Request\n"); break; -#endif -#ifdef ICMP_MASKREPLY case ICMP_MASKREPLY: (void)printf("Address Mask Reply\n"); break; -#endif + case ICMP_ROUTERADVERT: + (void)printf("Router Advertisement\n"); + break; + case ICMP_ROUTERSOLICIT: + (void)printf("Router Solicitation\n"); + break; default: (void)printf("Bad ICMP type: %d\n", icp->icmp_type); } @@ -911,24 +1746,27 @@ pr_icmph(icp) * pr_iph -- * Print an IP header with options. */ -pr_iph(ip) - struct ip *ip; +static void +pr_iph(struct ip *ip) { - int hlen; u_char *cp; + int hlen; hlen = ip->ip_hl << 2; cp = (u_char *)ip + 20; /* point to options */ - (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst Data\n"); + (void)printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst\n"); (void)printf(" %1x %1x %02x %04x %04x", - ip->ip_v, ip->ip_hl, ip->ip_tos, ip->ip_len, ip->ip_id); - (void)printf(" %1x %04x", ((ip->ip_off) & 0xe000) >> 13, - (ip->ip_off) & 0x1fff); - (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p, ip->ip_sum); + ip->ip_v, ip->ip_hl, ip->ip_tos, ntohs(ip->ip_len), + ntohs(ip->ip_id)); + (void)printf(" %1lx %04lx", + (u_long) (ntohl(ip->ip_off) & 0xe000) >> 13, + (u_long) ntohl(ip->ip_off) & 0x1fff); + (void)printf(" %02x %02x %04x", ip->ip_ttl, ip->ip_p, + ntohs(ip->ip_sum)); (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_src.s_addr)); (void)printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->ip_dst.s_addr)); - /* dump and option bytes */ + /* dump any option bytes */ while (hlen-- > 20) { (void)printf("%02x", *cp++); } @@ -940,19 +1778,18 @@ pr_iph(ip) * Return an ascii host address as a dotted quad and optionally with * a hostname. */ -char * -pr_addr(l) - u_long l; +static char * +pr_addr(struct in_addr ina) { struct hostent *hp; - static char buf[80]; + static char buf[16 + 3 + MAXHOSTNAMELEN]; if ((options & F_NUMERIC) || - !(hp = gethostbyaddr((char *)&l, 4, AF_INET))) - (void)sprintf(buf, "%s", inet_ntoa(*(struct in_addr *)&l)); + !(hp = gethostbyaddr((char *)&ina, 4, AF_INET))) + return inet_ntoa(ina); else - (void)sprintf(buf, "%s (%s)", hp->h_name, - inet_ntoa(*(struct in_addr *)&l)); + (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name, + inet_ntoa(ina)); return(buf); } @@ -960,11 +1797,11 @@ pr_addr(l) * pr_retip -- * Dump some info on a returned (via ICMP) IP packet. */ -pr_retip(ip) - struct ip *ip; +static void +pr_retip(struct ip *ip) { - int hlen; u_char *cp; + int hlen; pr_iph(ip); hlen = ip->ip_hl << 2; @@ -978,19 +1815,35 @@ pr_retip(ip) (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); } -fill(bp, patp) - char *bp, *patp; +static char * +pr_ntime(n_time timestamp) +{ + static char buf[10]; + int hour, min, sec; + + sec = ntohl(timestamp) / 1000; + hour = sec / 60 / 60; + min = (sec % (60 * 60)) / 60; + sec = (sec % (60 * 60)) % 60; + + (void)snprintf(buf, sizeof(buf), "%02d:%02d:%02d", hour, min, sec); + + return (buf); +} + +static void +fill(char *bp, char *patp) { - register int ii, jj, kk; - int pat[16]; char *cp; + int pat[16]; + u_int ii, jj, kk; - for (cp = patp; *cp; cp++) - if (!isxdigit(*cp)) { - (void)fprintf(stderr, - "ping: patterns must be specified as hex digits.\n"); - exit(1); - } + for (cp = patp; *cp; cp++) { + if (!isxdigit(*cp)) + errx(EX_USAGE, + "patterns must be specified as hex digits"); + + } ii = sscanf(patp, "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x", &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6], @@ -998,9 +1851,7 @@ fill(bp, patp) &pat[13], &pat[14], &pat[15]); if (ii > 0) - for (kk = 0; - kk <= MAXPACKET - (8 + sizeof(struct timeval) + ii); - kk += ii) + for (kk = 0; kk <= maxpayload - (TIMEVAL_LEN + ii); kk += ii) for (jj = 0; jj < ii; ++jj) bp[jj + kk] = pat[jj]; if (!(options & F_QUIET)) { @@ -1011,9 +1862,60 @@ fill(bp, patp) } } -usage() +uint32_t +str2svc(const char *str) { - (void)fprintf(stderr, - "usage: ping [-Rdfnqrv] [-c count] [-i wait] [-l preload]\n\t[-p pattern] [-s packetsize] host\n"); - exit(1); + uint32_t svc; + char *endptr; + + if (str == NULL || *str == '\0') + svc = UINT32_MAX; + else if (strcasecmp(str, "BK_SYS") == 0) + return SO_TC_BK_SYS; + else if (strcasecmp(str, "BK") == 0) + return SO_TC_BK; + else if (strcasecmp(str, "BE") == 0) + return SO_TC_BE; + else if (strcasecmp(str, "RD") == 0) + return SO_TC_RD; + else if (strcasecmp(str, "OAM") == 0) + return SO_TC_OAM; + else if (strcasecmp(str, "AV") == 0) + return SO_TC_AV; + else if (strcasecmp(str, "RV") == 0) + return SO_TC_RV; + else if (strcasecmp(str, "VI") == 0) + return SO_TC_VI; + else if (strcasecmp(str, "VO") == 0) + return SO_TC_VO; + else if (strcasecmp(str, "CTL") == 0) + return SO_TC_CTL; + else { + svc = strtoul(str, &endptr, 0); + if (*endptr != '\0') + svc = UINT32_MAX; + } + return (svc); +} + +#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) +#define SECOPT " [-P policy]" +#else +#define SECOPT "" +#endif +static void +usage(void) +{ + + (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n", +"usage: ping [-AaDdfnoQqRrv] [-b boundif] [-c count] [-G sweepmaxsize]", +" [-g sweepminsize] [-h sweepincrsize] [-i wait] [−k trafficclass]", +" [-l preload] [-M mask | time] [-m ttl]" SECOPT " [-p pattern]", +" [-S src_addr] [-s packetsize] [-t timeout][-W waittime] [-z tos]", +" host", +" ping [-AaDdfLnoQqRrv] [-b boundif] [-c count] [-I iface] [-i wait]", +" [−k trafficclass] [-l preload] [-M mask | time] [-m ttl]" SECOPT " [-p pattern] [-S src_addr]", +" [-s packetsize] [-T ttl] [-t timeout] [-W waittime]", +" [-z tos] mcast-group"); + exit(EX_USAGE); }