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author | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
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committer | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /network_cmds/ping.tproj/ping.c | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'network_cmds/ping.tproj/ping.c')
-rw-r--r-- | network_cmds/ping.tproj/ping.c | 2134 |
1 files changed, 2134 insertions, 0 deletions
diff --git a/network_cmds/ping.tproj/ping.c b/network_cmds/ping.tproj/ping.c new file mode 100644 index 0000000..58e7f80 --- /dev/null +++ b/network_cmds/ping.tproj/ping.c @@ -0,0 +1,2134 @@ +/* + * Copyright (c) 1999-2016 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * 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. 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, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * 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_OSREFERENCE_LICENSE_HEADER_END@ + */ +/* + * Copyright (c) 1989, 1993 + * 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. + * 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. + */ + +#include <sys/cdefs.h> + +#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, + * measure round-trip-delays and packet loss across network paths. + * + * Author - + * Mike Muuss + * U. S. Army Ballistic Research Laboratory + * December, 1983 + * + * Status - + * Public Domain. Distribution Unlimited. + * Bugs - + * More statistics could always be gathered. + * This program has to run SUID to ROOT to access the ICMP socket. + */ + +#include <sys/param.h> /* NB: we rely on this for <sys/types.h> */ +#include <sys/socket.h> +#include <sys/sysctl.h> +#include <sys/time.h> +#include <sys/uio.h> + +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/ip_icmp.h> +#include <netinet/ip_var.h> +#include <arpa/inet.h> +#include <net/if.h> + +#ifdef IPSEC +#include <netinet6/ipsec.h> +#endif /*IPSEC*/ + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <math.h> +#include <netdb.h> +#include <signal.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> +#include <ifaddrs.h> +#include <getopt.h> + +#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 */ +#define SET(bit) (A(bit) |= B(bit)) +#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 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 +#define F_CONNECT 0x800000 +#define F_PRTIME 0x1000000 + +/* + * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum + * number of received sequence numbers we can keep track of. Change 128 + * to 8192 for complete accuracy... + */ +#define MAX_DUP_CHK (8 * 128) +int mx_dup_ck = MAX_DUP_CHK; +char rcvd_tbl[MAX_DUP_CHK / 8]; + +struct sockaddr_in whereto; /* who to ping */ +int datalen = DEFDATALEN; +int maxpayload; +int s; /* socket file descriptor */ +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; +int nocell; +int use_sendmsg = 0; +int use_recvmsg = 0; +int traffic_class = SO_TC_CTL; /* use control class, by default */ +int net_service_type = -1; +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 */ +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 */ +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 int str2sotc(const char *, bool *); +static int str2netservicetype(const char *, bool *); +static u_int8_t str2tos(const char *, bool *); +static void usage(void) __dead2; + +int32_t thiszone; /* seconds offset from gmt to local time */ +extern int32_t gmt2local(time_t); +static void pr_currenttime(void); + +static int longopt_flag = 0; + +#define LOF_CONNECT 0x01 +#define LOF_PRTIME 0x02 + +static const struct option longopts[] = { + { "apple-connect", no_argument, &longopt_flag, LOF_CONNECT }, + { "apple-time", no_argument, &longopt_flag, LOF_PRTIME }, + { NULL, 0, NULL, 0 } +}; + +int +main(int argc, char *const *argv) +{ + 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; + 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[MAX_IPOPTLEN]; /* record route space */ +#endif + unsigned char loop, mttl; + + payload = source = NULL; +#ifdef IPSEC_POLICY_IPSEC + policy_in = policy_out = NULL; +#endif + bool valid; + + /* + * 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_long(argc, argv, + "AaB:b:Cc:DdfG:g:h:I:i:k:K:Ll:M:m:noP:p:QqRrS:s:T:t:vW:z:", + longopts, NULL)) != -1) + { + switch(ch) { + case 'A': + options |= F_MISSED; + break; + case 'a': + options |= F_AUDIBLE; + break; + case 'B': + case 'b': + boundif = optarg; + break; + case 'C': + nocell++; + break; + case 'c': + 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 (uid) { + errno = EPERM; + err(EX_NOPERM, "-f flag"); + } + options |= F_FLOOD; + setbuf(stdout, (char *)NULL); + break; + 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': + if (strcasecmp(optarg, "sendmsg") == 0) { + use_sendmsg++; + break; + } + if (strcasecmp(optarg, "recvmsg") == 0) { + use_recvmsg++; + break; + } + traffic_class = str2sotc(optarg, &valid); + if (valid == false) + errx(EX_USAGE, "bad traffic class: `%s'", + optarg); + break; + case 'K': + if (strcasecmp(optarg, "sendmsg") == 0) { + use_sendmsg++; + break; + } + net_service_type = str2netservicetype(optarg, &valid); + if (valid == false) + errx(EX_USAGE, "bad network service type: `%s'", + optarg); + /* suppress default traffic class (-k can still be specified after -K) */ + traffic_class = -1; + break; + case 'L': + options |= F_NOLOOP; + loop = 0; + break; + case 'l': + 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 = 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; + case 'P': +#ifdef IPSEC +#ifdef IPSEC_POLICY_IPSEC + 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"); +#endif /*IPSEC_POLICY_IPSEC*/ +#endif /*IPSEC*/ + break; + case 'p': /* fill buffer with user pattern */ + options |= F_PINGFILLED; + payload = optarg; + break; + case 'Q': + options |= F_QUIET2; + break; + case 'q': + options |= F_QUIET; + break; + case 'R': + options |= F_RROUTE; + break; + case 'r': + options |= F_SO_DONTROUTE; + break; + case 'S': + source = optarg; + break; + case 's': /* size of packet to send */ + 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; + tos = str2tos(optarg, &valid); + if (valid == false) + errx(EX_USAGE, "invalid TOS: `%s'", optarg); + break; + case 0: + switch (longopt_flag) { + case LOF_CONNECT: + options |= F_CONNECT; + break; + case LOF_PRTIME: + options |= F_PRTIME; + thiszone = gmt2local(0); + break; + default: + break; + } + longopt_flag = 0; + break; + default: + usage(); + } + } + + if (boundif != NULL && (ifscope = if_nametoindex(boundif)) == 0) + errx(1, "bad interface name"); + + if (argc - optind != 1) + usage(); + 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)strlcpy(snamebuf, hp->h_name, + sizeof(snamebuf)); + shostname = snamebuf; + } + if (bind(s, (struct sockaddr *)&sock_in, sizeof sock_in) == -1) +#if (DEBUG || DEVELOPMENT) + options |= F_HDRINCL; +#else + err(1, "bind"); +#endif /* DEBUG || DEVELOPMENT */ + } + + bzero(&whereto, sizeof(whereto)); + to = &whereto; + to->sin_family = AF_INET; + to->sin_len = sizeof *to; + if (inet_aton(target, &to->sin_addr) != 0) { + hostname = target; + } 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)strlcpy(hnamebuf, hp->h_name, sizeof(hnamebuf)); + hostname = hnamebuf; + } + + 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 (!(options & F_PINGFILLED)) + for (i = TIMEVAL_LEN; i < MAX(datalen, sweepmax); ++i) + *datap++ = i; + + ident = getpid() & 0xFFFF; + + 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 (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 (use_sendmsg == 0) { + if (net_service_type != -1) + if (setsockopt(s, SOL_SOCKET, SO_NET_SERVICE_TYPE, + (void *)&net_service_type, sizeof (net_service_type)) != 0) + warn("setsockopt(SO_NET_SERVICE_TYPE"); + if (traffic_class != -1) { + if (setsockopt(s, SOL_SOCKET, SO_TRAFFIC_CLASS, + (void *)&traffic_class, sizeof (traffic_class)) != 0) + warn("setsockopt(SO_TRAFFIC_CLASS"); + + } + } + if (use_recvmsg > 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_OFFSET] = IPOPT_MINOFF; + rspace[sizeof(rspace) - 1] = IPOPT_EOL; + if (setsockopt(s, IPPROTO_IP, IP_OPTIONS, rspace, + sizeof(rspace)) < 0) + err(EX_OSERR, "setsockopt IP_OPTIONS"); +#else + 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 ((options & F_CONNECT)) { + if (connect(s, (struct sockaddr *)&whereto, sizeof whereto) == -1) + err(EX_OSERR, "connect"); + } + + 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. But beware: RFC 1122 allows hosts to ignore broadcast + * or multicast pings if they wish. + */ + + /* + * 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)); + + 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); + } + + /* + * rdar://25829310 + * + * Clear blocked signals inherited from the parent + */ + sigset_t newset; + sigemptyset(&newset); + if (sigprocmask(SIG_SETMASK, &newset, NULL) != 0) + err(EX_OSERR, "sigprocmask(newset)"); + + /* + * Use sigaction() instead of signal() to get unambiguous semantics, + * in particular with SA_RESTART not set. + */ + + 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 (alarmtimeout > 0) { + si_sa.sa_handler = stopit; + if (sigaction(SIGALRM, &si_sa, 0) == -1) + err(EX_OSERR, "sigaction SIGALRM"); + } + + 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 (preload == 0) + pinger(); /* send the first ping */ + else { + if (npackets != 0 && preload > npackets) + preload = npackets; + while (preload--) /* fire off them quickies */ + pinger(); + } + (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--; + } + 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; + + 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; + } + 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); + } + } + } + } + finish(); + /* NOTREACHED */ + exit(0); /* Make the compiler happy */ +} + +/* + * 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 +stopit(int sig __unused) +{ + + /* + * 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 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. + */ +static void +pinger(void) +{ + 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_type; + icp->icmp_code = 0; + icp->icmp_cksum = 0; + icp->icmp_seq = htons(ntransmitted); + icp->icmp_id = ident; /* ID */ + + CLR(ntransmitted % mx_dup_ck); + + if (datalen >= TIMEVAL_LEN) /* can we time transfer */ + timing = 1; + else + timing = 0; + + if ((options & F_TIME) || timing) { + (void)gettimeofday(&now, 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 = ICMP_MINLEN + phdr_len + datalen; + + /* compute ICMP checksum here */ + icp->icmp_cksum = in_cksum((u_short *)icp, cc); + + 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 (use_sendmsg > 0) { + struct msghdr msg; + struct iovec iov; + char cmbuf[2 * CMSG_SPACE(sizeof(int))]; + struct cmsghdr *cm = (struct cmsghdr *)cmbuf; + + if ((options & F_CONNECT)) { + msg.msg_name = NULL; + msg.msg_namelen = 0; + } else { + 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; + + msg.msg_controllen = 0; + msg.msg_control = NULL; + + if (traffic_class >= 0) { + 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_controllen += CMSG_SPACE(sizeof(int)); + cm = (struct cmsghdr *)(((char *)cm) + CMSG_SPACE(sizeof(int))); + } + if (net_service_type >= 0) { + cm->cmsg_len = CMSG_LEN(sizeof(int)); + cm->cmsg_level = SOL_SOCKET; + cm->cmsg_type = SO_NET_SERVICE_TYPE; + msg.msg_controllen += CMSG_SPACE(sizeof(int)); + *(int *)CMSG_DATA(cm) = net_service_type; + } + msg.msg_control = cmbuf; + + msg.msg_flags = 0; + + i = sendmsg(s, &msg, 0); + } else { + if ((options & F_CONNECT)) { + i = send(s, (char *)packet, cc, 0); + } else { + i = sendto(s, (char *)packet, cc, 0, (struct sockaddr *)&whereto, + sizeof(whereto)); + } + } + if (i < 0 || i != cc) { + 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); +} + +/* + * pr_pack -- + * Print out the packet, if it came from us. This logic is necessary + * because ALL readers of the ICMP socket get a copy of ALL ICMP packets + * which arrive ('tis only fair). This permits multiple copies of this + * program to be run without having intermingled output (or statistics!). + */ +static void +pr_pack(char *buf, int cc, struct sockaddr_in *from, struct timeval *tv, + int tc) +{ + struct in_addr ina; + u_char *cp, *dp; + struct icmp *icp; + struct ip *ip; + const void *tp; + double triptime; + 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) + 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_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 = &icp->icmp_ip; +#else + tp = icp->icmp_data; +#endif + 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; + } + + seq = ntohs(icp->icmp_seq); + + if (TST(seq % mx_dup_ck)) { + ++nrepeats; + --nreceived; + dupflag = 1; + } else { + 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; + } + if (options & F_PRTIME) + pr_currenttime(); + (void)printf("%d bytes from %s: icmp_seq=%u", cc, + inet_ntoa(*(struct in_addr *)&from->sin_addr.s_addr), + seq); + (void)printf(" ttl=%d", ip->ip_ttl); + if (timing) + (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[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 = 0; i < seq_datalen; ++i, ++cp) { + if ((i % 16) == 0) + (void)printf("\n\t"); + (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. + * 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))) { + if (options & F_PRTIME) + pr_currenttime(); + (void)printf("%d bytes from %s: ", cc, + pr_addr(from->sin_addr)); + pr_icmph(icp); + } else + return; + } + + /* Display any IP options */ + cp = (u_char *)buf + sizeof(struct ip); + + for (; hlen > (int)sizeof(struct ip); --hlen, ++cp) + switch (*cp) { + case IPOPT_EOL: + hlen = 0; + break; + case IPOPT_LSRR: + case IPOPT_SSRR: + (void)printf(*cp == IPOPT_LSRR ? + "\nLSRR: " : "\nSSRR: "); + j = cp[IPOPT_OLEN] - IPOPT_MINOFF + 1; + hlen -= 2; + cp += 2; + if (j >= INADDR_LEN && + j <= 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; + j -= INADDR_LEN; + if (j < INADDR_LEN) + break; + (void)putchar('\n'); + } + } else + (void)printf("\t(truncated route)\n"); + break; + case IPOPT_RR: + j = cp[IPOPT_OLEN]; /* get length */ + i = cp[IPOPT_OFFSET]; /* and pointer */ + hlen -= 2; + cp += 2; + if (i > j) + i = j; + i = i - IPOPT_MINOFF + 1; + if (i < 0 || i > (hlen - (int)sizeof(struct ip))) { + old_rrlen = 0; + continue; + } + if (i == old_rrlen + && !bcmp((char *)cp, old_rr, i) + && !(options & F_FLOOD)) { + (void)printf("\t(same route)"); + hlen -= i; + cp += i; + break; + } + old_rrlen = i; + bcopy((char *)cp, old_rr, i); + (void)printf("\nRR: "); + 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'); + } + } else + (void)printf("\t(truncated route)"); + break; + case IPOPT_NOP: + (void)printf("\nNOP"); + break; + default: + (void)printf("\nunknown option %x", *cp); + break; + } + if (!(options & F_FLOOD)) { + (void)putchar('\n'); + (void)fflush(stdout); + } +} + +/* + * in_cksum -- + * Checksum routine for Internet Protocol family headers (C Version) + */ +u_short +in_cksum(u_short *addr, int len) +{ + 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 + * sequential 16 bit words to it, and at the end, fold back all the + * carry bits from the top 16 bits into the lower 16 bits. + */ + while (nleft > 1) { + sum += *w++; + nleft -= 2; + } + + /* mop up an odd byte, if necessary */ + if (nleft == 1) { + 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 */ + sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ + sum += (sum >> 16); /* add carry */ + answer = ~sum; /* truncate to 16 bits */ + return(answer); +} + +/* + * tvsub -- + * Subtract 2 timeval structs: out = out - in. Out is assumed to + * be >= 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; + } + 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. + */ +static void +finish(void) +{ + + (void)signal(SIGINT, SIG_IGN); + (void)signal(SIGALRM, SIG_IGN); + (void)putchar('\n'); + (void)fflush(stdout); + (void)printf("--- %s ping statistics ---\n", hostname); + (void)printf("%ld packets transmitted, ", ntransmitted); + (void)printf("%ld packets received, ", nreceived); + if (nrepeats) + (void)printf("+%ld duplicates, ", nrepeats); + if (ntransmitted) { + if (nreceived > ntransmitted) + (void)printf("-- somebody's printing up packets!"); + else + (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) { + 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)); + } + + if (nreceived) + exit(0); + else + exit(2); +} + +#ifdef notdef +static char *ttab[] = { + "Echo Reply", /* ip + seq + udata */ + "Dest Unreachable", /* net, host, proto, port, frag, sr + IP */ + "Source Quench", /* IP */ + "Redirect", /* redirect type, gateway, + IP */ + "Echo", + "Time Exceeded", /* transit, frag reassem + IP */ + "Parameter Problem", /* pointer + IP */ + "Timestamp", /* id + seq + three timestamps */ + "Timestamp Reply", /* " */ + "Info Request", /* id + sq */ + "Info Reply" /* " */ +}; +#endif + +/* + * pr_icmph -- + * Print a descriptive string about an ICMP header. + */ +static void +pr_icmph(struct icmp *icp) +{ + + switch(icp->icmp_type) { + case ICMP_ECHOREPLY: + (void)printf("Echo Reply\n"); + /* XXX ID + Seq + Data */ + break; + case ICMP_UNREACH: + switch(icp->icmp_code) { + case ICMP_UNREACH_NET: + (void)printf("Destination Net Unreachable\n"); + break; + case ICMP_UNREACH_HOST: + (void)printf("Destination Host Unreachable\n"); + break; + case ICMP_UNREACH_PROTOCOL: + (void)printf("Destination Protocol Unreachable\n"); + break; + case ICMP_UNREACH_PORT: + (void)printf("Destination Port Unreachable\n"); + break; + case ICMP_UNREACH_NEEDFRAG: + (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); + break; + } + /* Print returned IP header information */ +#ifndef icmp_data + pr_retip(&icp->icmp_ip); +#else + pr_retip((struct ip *)icp->icmp_data); +#endif + break; + case ICMP_SOURCEQUENCH: + (void)printf("Source Quench\n"); +#ifndef icmp_data + pr_retip(&icp->icmp_ip); +#else + pr_retip((struct ip *)icp->icmp_data); +#endif + break; + case ICMP_REDIRECT: + switch(icp->icmp_code) { + case ICMP_REDIRECT_NET: + (void)printf("Redirect Network"); + break; + case ICMP_REDIRECT_HOST: + (void)printf("Redirect Host"); + break; + case ICMP_REDIRECT_TOSNET: + (void)printf("Redirect Type of Service and Network"); + break; + case ICMP_REDIRECT_TOSHOST: + (void)printf("Redirect Type of Service and Host"); + break; + default: + (void)printf("Redirect, Bad Code: %d", icp->icmp_code); + break; + } + (void)printf("(New addr: %s)\n", inet_ntoa(icp->icmp_gwaddr)); +#ifndef icmp_data + pr_retip(&icp->icmp_ip); +#else + pr_retip((struct ip *)icp->icmp_data); +#endif + break; + case ICMP_ECHO: + (void)printf("Echo Request\n"); + /* XXX ID + Seq + Data */ + break; + case ICMP_TIMXCEED: + switch(icp->icmp_code) { + case ICMP_TIMXCEED_INTRANS: + (void)printf("Time to live exceeded\n"); + break; + case ICMP_TIMXCEED_REASS: + (void)printf("Frag reassembly time exceeded\n"); + break; + default: + (void)printf("Time exceeded, Bad Code: %d\n", + icp->icmp_code); + break; + } +#ifndef icmp_data + pr_retip(&icp->icmp_ip); +#else + pr_retip((struct ip *)icp->icmp_data); +#endif + break; + case ICMP_PARAMPROB: + (void)printf("Parameter problem: pointer = 0x%02x\n", + icp->icmp_hun.ih_pptr); +#ifndef icmp_data + pr_retip(&icp->icmp_ip); +#else + pr_retip((struct ip *)icp->icmp_data); +#endif + break; + case ICMP_TSTAMP: + (void)printf("Timestamp\n"); + /* XXX ID + Seq + 3 timestamps */ + break; + case ICMP_TSTAMPREPLY: + (void)printf("Timestamp Reply\n"); + /* XXX ID + Seq + 3 timestamps */ + break; + case ICMP_IREQ: + (void)printf("Information Request\n"); + /* XXX ID + Seq */ + break; + case ICMP_IREQREPLY: + (void)printf("Information Reply\n"); + /* XXX ID + Seq */ + break; + case ICMP_MASKREQ: + (void)printf("Address Mask Request\n"); + break; + case ICMP_MASKREPLY: + (void)printf("Address Mask Reply\n"); + break; + 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); + } +} + +/* + * pr_iph -- + * Print an IP header with options. + */ +static void +pr_iph(struct ip *ip) +{ + 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\n"); + (void)printf(" %1x %1x %02x %04x %04x", + 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 any option bytes */ + while (hlen-- > 20) { + (void)printf("%02x", *cp++); + } + (void)putchar('\n'); +} + +/* + * pr_addr -- + * Return an ascii host address as a dotted quad and optionally with + * a hostname. + */ +static char * +pr_addr(struct in_addr ina) +{ + struct hostent *hp; + static char buf[16 + 3 + MAXHOSTNAMELEN]; + + if ((options & F_NUMERIC) || + !(hp = gethostbyaddr((char *)&ina, 4, AF_INET))) + return inet_ntoa(ina); + else + (void)snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name, + inet_ntoa(ina)); + return(buf); +} + +/* + * pr_retip -- + * Dump some info on a returned (via ICMP) IP packet. + */ +static void +pr_retip(struct ip *ip) +{ + u_char *cp; + int hlen; + + pr_iph(ip); + hlen = ip->ip_hl << 2; + cp = (u_char *)ip + hlen; + + if (ip->ip_p == 6) + (void)printf("TCP: from port %u, to port %u (decimal)\n", + (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); + else if (ip->ip_p == 17) + (void)printf("UDP: from port %u, to port %u (decimal)\n", + (*cp * 256 + *(cp + 1)), (*(cp + 2) * 256 + *(cp + 3))); +} + +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) +{ + char *cp; + int pat[16]; + u_int ii, jj, kk; + + 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], + &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12], + &pat[13], &pat[14], &pat[15]); + + if (ii > 0) + 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)) { + (void)printf("PATTERN: 0x"); + for (jj = 0; jj < ii; ++jj) + (void)printf("%02x", bp[jj] & 0xFF); + (void)printf("\n"); + } +} + +int +str2sotc(const char *str, bool *valid) +{ + int sotc = -1; + char *endptr; + + *valid = true; + + if (str == NULL || *str == '\0') + *valid = false; + 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 { + sotc = (int)strtol(str, &endptr, 0); + if (*endptr != '\0') + *valid = false; + } + return (sotc); +} + +int +str2netservicetype(const char *str, bool *valid) +{ + int svc = -1; + char *endptr; + + *valid = true; + + if (str == NULL || *str == '\0') + *valid = false; + else if (strcasecmp(str, "BK") == 0) + return NET_SERVICE_TYPE_BK; + else if (strcasecmp(str, "BE") == 0) + return NET_SERVICE_TYPE_BE; + else if (strcasecmp(str, "VI") == 0) + return NET_SERVICE_TYPE_VI; + else if (strcasecmp(str, "SIG") == 0) + return NET_SERVICE_TYPE_SIG; + else if (strcasecmp(str, "VO") == 0) + return NET_SERVICE_TYPE_VO; + else if (strcasecmp(str, "RV") == 0) + return NET_SERVICE_TYPE_RV; + else if (strcasecmp(str, "AV") == 0) + return NET_SERVICE_TYPE_AV; + else if (strcasecmp(str, "OAM") == 0) + return NET_SERVICE_TYPE_OAM; + else if (strcasecmp(str, "RD") == 0) + return NET_SERVICE_TYPE_RD; + else { + svc = (int)strtol(str, &endptr, 0); + if (*endptr != '\0') + *valid = false; + } + return (svc); +} + +u_int8_t +str2tos(const char *str, bool *valid) +{ + u_int8_t dscp = -1; + char *endptr; + + *valid = true; + + if (str == NULL || *str == '\0') + *valid = false; + else if (strcasecmp(str, "DF") == 0) + dscp = _DSCP_DF; + else if (strcasecmp(str, "EF") == 0) + dscp = _DSCP_EF; + else if (strcasecmp(str, "VA") == 0) + dscp = _DSCP_VA; + + else if (strcasecmp(str, "CS0") == 0) + dscp = _DSCP_CS0; + else if (strcasecmp(str, "CS1") == 0) + dscp = _DSCP_CS1; + else if (strcasecmp(str, "CS2") == 0) + dscp = _DSCP_CS2; + else if (strcasecmp(str, "CS3") == 0) + dscp = _DSCP_CS3; + else if (strcasecmp(str, "CS4") == 0) + dscp = _DSCP_CS4; + else if (strcasecmp(str, "CS5") == 0) + dscp = _DSCP_CS5; + else if (strcasecmp(str, "CS6") == 0) + dscp = _DSCP_CS6; + else if (strcasecmp(str, "CS7") == 0) + dscp = _DSCP_CS7; + + else if (strcasecmp(str, "AF11") == 0) + dscp = _DSCP_AF11; + else if (strcasecmp(str, "AF12") == 0) + dscp = _DSCP_AF12; + else if (strcasecmp(str, "AF13") == 0) + dscp = _DSCP_AF13; + else if (strcasecmp(str, "AF21") == 0) + dscp = _DSCP_AF21; + else if (strcasecmp(str, "AF22") == 0) + dscp = _DSCP_AF22; + else if (strcasecmp(str, "AF23") == 0) + dscp = _DSCP_AF23; + else if (strcasecmp(str, "AF31") == 0) + dscp = _DSCP_AF31; + else if (strcasecmp(str, "AF32") == 0) + dscp = _DSCP_AF32; + else if (strcasecmp(str, "AF33") == 0) + dscp = _DSCP_AF33; + else if (strcasecmp(str, "AF41") == 0) + dscp = _DSCP_AF41; + else if (strcasecmp(str, "AF42") == 0) + dscp = _DSCP_AF42; + else if (strcasecmp(str, "AF43") == 0) + dscp = _DSCP_AF43; + + else { + unsigned long val = strtoul(str, &endptr, 0); + if (*endptr != '\0' || val > 255) + *valid = false; + else + return ((u_int8_t)val); + } + /* DSCP occupies the 6 upper bits of the TOS field */ + return (dscp << 2); +} + +void +pr_currenttime(void) +{ + int s; + struct timeval tv; + + gettimeofday(&tv, NULL); + + s = (tv.tv_sec + thiszone) % 86400; + printf("%02d:%02d:%02d.%06u ", s / 3600, (s % 3600) / 60, s % 60, + (u_int32_t)tv.tv_usec); +} + +#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] [-c count] [-G sweepmaxsize]", +" [-g sweepminsize] [-h sweepincrsize] [-i wait]", +" [-l preload] [-M mask | time] [-m ttl]" SECOPT " [-p pattern]", +" [-S src_addr] [-s packetsize] [-t timeout][-W waittime]", +" [-z tos] host", +" ping [-AaDdfLnoQqRrv] [-c count] [-I iface] [-i wait]", +" [-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"); + (void)fprintf(stderr, "Apple specific options (to be specified before mcast-group or host like all options)\n"); + (void)fprintf(stderr, " -b boundif # bind the socket to the interface\n"); + (void)fprintf(stderr, " -k traffic_class # set traffic class socket option\n"); + (void)fprintf(stderr, " -K net_service_type # set traffic class socket options\n"); + (void)fprintf(stderr, " -apple-connect # call connect(2) in the socket\n"); + (void)fprintf(stderr, " -apple-time # display current time\n"); + exit(EX_USAGE); +} |