forked from VigorCM/android_external_ping6
/
ping6.c
2696 lines (2462 loc) · 65 KB
/
ping6.c
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/* $NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $ */
/* $KAME: ping6.c,v 1.164 2002/11/16 14:05:37 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*/
/* BSDI ping.c,v 2.3 1996/01/21 17:56:50 jch Exp */
/*
* 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.
* 3. 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.
*/
#if 0
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1989, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
#endif /* not lint */
#else
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: ping6.c,v 1.73 2010/09/20 11:49:48 ahoka Exp $");
#endif
#endif
/*
* 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.
*/
/*
* NOTE:
* USE_SIN6_SCOPE_ID assumes that sin6_scope_id has the same semantics
* as IPV6_PKTINFO. Some people object it (sin6_scope_id specifies *link*
* while IPV6_PKTINFO specifies *interface*. Link is defined as collection of
* network attached to 1 or more interfaces)
*/
#include <sys/param.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet/icmp6.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <netdb.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <poll.h>
#include <private/android_filesystem_config.h>
#ifdef IPSEC
#include <netinet6/ah.h>
#include <netinet6/ipsec.h>
#endif
/*
* We currently don't have the libc support required for these two features in
* Android. Should we get enough support later, feel free to remove the #ifdefs
* altogether.
*/
#undef ANDROID_INCLUDE_MD5_SUPPORT
#undef ANDROID_INCLUDE_RTHDR_SUPPORT
#ifdef ANDROID_INCLUDE_MD5_SUPPORT
#include <md5.h>
#endif
struct tv32 {
u_int32_t tv32_sec;
u_int32_t tv32_usec;
};
#define MAXPACKETLEN 131072
#define IP6LEN 40
#define ICMP6ECHOLEN 8 /* icmp echo header len excluding time */
#define ICMP6ECHOTMLEN sizeof(struct tv32)
#define ICMP6_NIQLEN (ICMP6ECHOLEN + 8)
/* FQDN case, 64 bits of nonce + 32 bits ttl */
#define ICMP6_NIRLEN (ICMP6ECHOLEN + 12)
#define EXTRA 256 /* for AH and various other headers. weird. */
#define DEFDATALEN ICMP6ECHOTMLEN
#define MAXDATALEN MAXPACKETLEN - IP6LEN - ICMP6ECHOLEN
#define NROUTES 9 /* number of record route slots */
#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))
#define F_FLOOD 0x0001
#define F_INTERVAL 0x0002
#define F_PINGFILLED 0x0008
#define F_QUIET 0x0010
#define F_RROUTE 0x0020
#define F_SO_DEBUG 0x0040
#define F_VERBOSE 0x0100
#ifdef IPSEC
#ifdef IPSEC_POLICY_IPSEC
#define F_POLICY 0x0400
#else
#define F_AUTHHDR 0x0200
#define F_ENCRYPT 0x0400
#endif /*IPSEC_POLICY_IPSEC*/
#endif /*IPSEC*/
#define F_NODEADDR 0x0800
#define F_FQDN 0x1000
#define F_INTERFACE 0x2000
#define F_SRCADDR 0x4000
#ifdef IPV6_REACHCONF
#define F_REACHCONF 0x8000
#endif
#define F_HOSTNAME 0x10000
#define F_FQDNOLD 0x20000
#define F_NIGROUP 0x40000
#define F_SUPTYPES 0x80000
#define F_NOMINMTU 0x100000
#define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
u_int options;
#define IN6LEN sizeof(struct in6_addr)
#define SA6LEN sizeof(struct sockaddr_in6)
#define DUMMY_PORT 10101
#define SIN6(s) ((struct sockaddr_in6 *)(s))
/* Android-specific hacks to get this to compile.*/
#define INFTIM -1
#define MAXDNAME 1025
/*
* 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 * 8192)
int mx_dup_ck = MAX_DUP_CHK;
char rcvd_tbl[MAX_DUP_CHK / 8];
struct addrinfo *res;
struct sockaddr_in6 dst; /* who to ping6 */
struct sockaddr_in6 src; /* src addr of this packet */
socklen_t srclen;
int datalen = DEFDATALEN;
int s; /* socket file descriptor */
u_char outpack[MAXPACKETLEN];
char BSPACE = '\b'; /* characters written for flood */
char DOT = '.';
char *hostname;
int ident; /* process id to identify our packets */
u_int8_t nonce[8]; /* nonce field for node information */
int hoplimit = -1; /* hoplimit */
int pathmtu = 0; /* path MTU for the destination. 0 = unspec. */
/* counters */
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 */
struct timeval interval = {1, 0}; /* interval between packets */
/* 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. */
/* for node addresses */
u_short naflags;
/* for ancillary data(advanced API) */
struct msghdr smsghdr;
struct iovec smsgiov;
char *scmsg = 0;
volatile sig_atomic_t seenalrm;
volatile sig_atomic_t seenint;
#ifdef SIGINFO
volatile sig_atomic_t seeninfo;
#endif
void fill(char *, char *);
int get_hoplim(struct msghdr *);
int get_pathmtu(struct msghdr *);
struct in6_pktinfo *get_rcvpktinfo(struct msghdr *);
void onsignal(int);
void retransmit(void);
void onint(int);
size_t pingerlen(void);
int pinger(void);
const char *pr_addr(struct sockaddr *, int);
void pr_icmph(struct icmp6_hdr *, u_char *);
void pr_iph(struct ip6_hdr *);
void pr_suptypes(struct icmp6_nodeinfo *, size_t);
void pr_nodeaddr(struct icmp6_nodeinfo *, int);
int myechoreply(const struct icmp6_hdr *);
int mynireply(const struct icmp6_nodeinfo *);
char *dnsdecode(const u_char **, const u_char *, const u_char *,
char *, size_t);
void pr_pack(u_char *, int, struct msghdr *);
void pr_exthdrs(struct msghdr *);
#ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
void pr_ip6opt(void *);
void pr_rthdr(void *);
#endif
int pr_bitrange(u_int32_t, int, int);
void pr_retip(struct ip6_hdr *, u_char *);
void summary(void);
void tvsub(struct timeval *, struct timeval *);
int setpolicy(int, char *);
#ifdef ANDROID_INCLUDE_MD5_SUPPORT
char *nigroup(char *);
#endif
void usage(void);
int
isInSupplementaryGroup(gid_t group)
{
int numgroups, i;
gid_t groups[sysconf(_SC_NGROUPS_MAX) + 1];
numgroups = getgroups(sizeof(groups) / sizeof(groups[0]), groups);
if (numgroups < 0) {
perror("getgroups");
return 0;
}
for (i = 0; i < numgroups; i++) {
if (group == groups[i])
return 1;
}
return 0;
}
int
main(int argc, char *argv[])
{
struct itimerval itimer;
struct sockaddr_in6 from;
int timeout;
struct addrinfo hints;
struct pollfd fdmaskp[1];
int cc;
u_int i, packlen;
int ch, hold, preload, optval, ret_ga;
u_char *datap, *packet;
char *e, *target, *ifname = NULL, *gateway = NULL;
int ip6optlen = 0;
struct cmsghdr *scmsgp = NULL;
#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
u_long lsockbufsize;
int sockbufsize = 0;
#endif
int usepktinfo = 0;
struct in6_pktinfo *pktinfo = NULL;
#ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
struct ip6_rthdr *rthdr = NULL;
#endif
#ifdef IPSEC_POLICY_IPSEC
char *policy_in = NULL;
char *policy_out = NULL;
#endif
double intval;
size_t rthlen;
#ifdef IPV6_USE_MIN_MTU
int mflag = 0;
#endif
if (getuid() != 0 && !isInSupplementaryGroup(AID_INET)) {
fprintf(stderr, "%s: not root or in group AID_INET\n", argv[0]);
exit(3);
}
/* just to be sure */
memset(&smsghdr, 0, sizeof(smsghdr));
memset(&smsgiov, 0, sizeof(smsgiov));
preload = 0;
datap = &outpack[ICMP6ECHOLEN + ICMP6ECHOTMLEN];
#ifndef IPSEC
#define ADDOPTS
#else
#ifdef IPSEC_POLICY_IPSEC
#define ADDOPTS "P:"
#else
#define ADDOPTS "AE"
#endif /*IPSEC_POLICY_IPSEC*/
#endif
#ifdef ANDROID_INCLUDE_MD5_SUPPORT
#define ANDROID_MD5_OPTS "N"
#else
#define ANDROID_MD5_OPTS ""
#endif
while ((ch = getopt(argc, argv,
"a:b:c:dfHg:h:I:i:l:mnp:qRS:s:tvwW" ADDOPTS ANDROID_MD5_OPTS)) != -1) {
#undef ADDOPTS
switch (ch) {
case 'a':
{
char *cp;
options &= ~F_NOUSERDATA;
options |= F_NODEADDR;
for (cp = optarg; *cp != '\0'; cp++) {
switch (*cp) {
case 'a':
naflags |= NI_NODEADDR_FLAG_ALL;
break;
case 'c':
case 'C':
naflags |= NI_NODEADDR_FLAG_COMPAT;
break;
case 'l':
case 'L':
naflags |= NI_NODEADDR_FLAG_LINKLOCAL;
break;
case 's':
case 'S':
naflags |= NI_NODEADDR_FLAG_SITELOCAL;
break;
case 'g':
case 'G':
naflags |= NI_NODEADDR_FLAG_GLOBAL;
break;
case 'A': /* experimental. not in the spec */
#ifdef NI_NODEADDR_FLAG_ANYCAST
naflags |= NI_NODEADDR_FLAG_ANYCAST;
break;
#else
errx(1,
"-a A is not supported on the platform");
/*NOTREACHED*/
#endif
default:
usage();
/*NOTREACHED*/
}
}
break;
}
case 'b':
#if defined(SO_SNDBUF) && defined(SO_RCVBUF)
errno = 0;
e = NULL;
lsockbufsize = strtoul(optarg, &e, 10);
sockbufsize = lsockbufsize;
if (errno || !*optarg || *e ||
(u_long)sockbufsize != lsockbufsize)
errx(1, "invalid socket buffer size");
#else
errx(1,
"-b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported");
#endif
break;
case 'c':
npackets = strtol(optarg, &e, 10);
if (npackets <= 0 || *optarg == '\0' || *e != '\0')
errx(1,
"illegal number of packets -- %s", optarg);
break;
case 'd':
options |= F_SO_DEBUG;
break;
case 'f':
if (getuid()) {
errno = EPERM;
errx(1, "Must be superuser to flood ping");
}
options |= F_FLOOD;
setbuf(stdout, (char *)NULL);
break;
case 'g':
gateway = optarg;
break;
case 'H':
options |= F_HOSTNAME;
break;
case 'h': /* hoplimit */
hoplimit = strtol(optarg, &e, 10);
if (*optarg == '\0' || *e != '\0')
errx(1, "illegal hoplimit %s", optarg);
if (255 < hoplimit || hoplimit < -1)
errx(1,
"illegal hoplimit -- %s", optarg);
break;
case 'I':
ifname = optarg;
options |= F_INTERFACE;
#ifndef USE_SIN6_SCOPE_ID
usepktinfo++;
#endif
break;
case 'i': /* wait between sending packets */
intval = strtod(optarg, &e);
if (*optarg == '\0' || *e != '\0')
errx(1, "illegal timing interval %s", optarg);
if (intval < 1 && getuid()) {
errx(1, "%s: only root may use interval < 1s",
strerror(EPERM));
}
interval.tv_sec = (long)intval;
interval.tv_usec =
(long)((intval - interval.tv_sec) * 1000000);
if (interval.tv_sec < 0)
errx(1, "illegal timing interval %s", optarg);
/* less than 1/hz does not make sense */
if (interval.tv_sec == 0 && interval.tv_usec < 10000) {
warnx("too small interval, raised to 0.01");
interval.tv_usec = 10000;
}
options |= F_INTERVAL;
break;
case 'l':
if (getuid()) {
errno = EPERM;
errx(1, "Must be superuser to preload");
}
preload = strtol(optarg, &e, 10);
if (preload < 0 || *optarg == '\0' || *e != '\0')
errx(1, "illegal preload value -- %s", optarg);
break;
case 'm':
#ifdef IPV6_USE_MIN_MTU
mflag++;
break;
#else
errx(1, "-%c is not supported on this platform", ch);
/*NOTREACHED*/
#endif
case 'n':
options &= ~F_HOSTNAME;
break;
#ifdef ANDROID_INCLUDE_MD5_SUPPORT
case 'N':
options |= F_NIGROUP;
break;
#endif
case 'p': /* fill buffer with user pattern */
options |= F_PINGFILLED;
fill((char *)datap, optarg);
break;
case 'q':
options |= F_QUIET;
break;
case 'R':
#ifdef IPV6_REACHCONF
options |= F_REACHCONF;
break;
#else
errx(1, "-R is not supported in this configuration");
#endif
case 'S':
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_flags = AI_NUMERICHOST; /* allow hostname? */
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_RAW;
hints.ai_protocol = IPPROTO_ICMPV6;
ret_ga = getaddrinfo(optarg, NULL, &hints, &res);
if (ret_ga) {
errx(1, "invalid source address: %s",
gai_strerror(ret_ga));
}
/*
* res->ai_family must be AF_INET6 and res->ai_addrlen
* must be sizeof(src).
*/
memcpy(&src, res->ai_addr, res->ai_addrlen);
srclen = res->ai_addrlen;
freeaddrinfo(res);
options |= F_SRCADDR;
break;
case 's': /* size of packet to send */
datalen = strtol(optarg, &e, 10);
if (datalen <= 0 || *optarg == '\0' || *e != '\0')
errx(1, "illegal datalen value -- %s", optarg);
if (datalen > MAXDATALEN) {
errx(1,
"datalen value too large, maximum is %d",
MAXDATALEN);
}
break;
case 't':
options &= ~F_NOUSERDATA;
options |= F_SUPTYPES;
break;
case 'v':
options |= F_VERBOSE;
break;
case 'w':
options &= ~F_NOUSERDATA;
options |= F_FQDN;
break;
case 'W':
options &= ~F_NOUSERDATA;
options |= F_FQDNOLD;
break;
#ifdef IPSEC
#ifdef IPSEC_POLICY_IPSEC
case 'P':
options |= F_POLICY;
if (!strncmp("in", optarg, 2)) {
if ((policy_in = strdup(optarg)) == NULL)
errx(1, "strdup");
} else if (!strncmp("out", optarg, 3)) {
if ((policy_out = strdup(optarg)) == NULL)
errx(1, "strdup");
} else
errx(1, "invalid security policy");
break;
#else
case 'A':
options |= F_AUTHHDR;
break;
case 'E':
options |= F_ENCRYPT;
break;
#endif /*IPSEC_POLICY_IPSEC*/
#endif /*IPSEC*/
default:
usage();
/*NOTREACHED*/
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
usage();
/*NOTREACHED*/
}
if (argc > 1) {
#ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
rthlen = CMSG_SPACE(inet6_rth_space(IPV6_RTHDR_TYPE_0,
argc - 1));
if (rthlen == 0) {
errx(1, "too many intermediate hops");
/*NOTREACHED*/
}
ip6optlen += rthlen;
#else
errx(1, "compiled without support for routing headers");
#endif
}
#ifdef ANDROID_INCLUDE_MD5_SUPPORT
if (options & F_NIGROUP) {
target = nigroup(argv[argc - 1]);
if (target == NULL) {
usage();
/*NOTREACHED*/
}
} else
#endif
target = argv[argc - 1];
/* getaddrinfo */
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_flags = AI_CANONNAME;
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_RAW;
hints.ai_protocol = IPPROTO_ICMPV6;
ret_ga = getaddrinfo(target, NULL, &hints, &res);
if (ret_ga)
errx(1, "%s", gai_strerror(ret_ga));
if (res->ai_canonname)
hostname = res->ai_canonname;
else
hostname = target;
if (!res->ai_addr)
errx(1, "getaddrinfo failed");
(void)memcpy(&dst, res->ai_addr, res->ai_addrlen);
if ((s = socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0)
err(1, "socket");
/* set the source address if specified. */
if ((options & F_SRCADDR) &&
bind(s, (struct sockaddr *)&src, srclen) != 0) {
err(1, "bind");
}
/* set the gateway (next hop) if specified */
if (gateway) {
struct addrinfo ghints, *gres;
int error;
memset(&ghints, 0, sizeof(ghints));
ghints.ai_family = AF_INET6;
ghints.ai_socktype = SOCK_RAW;
ghints.ai_protocol = IPPROTO_ICMPV6;
error = getaddrinfo(gateway, NULL, &hints, &gres);
if (error) {
errx(1, "getaddrinfo for the gateway %s: %s",
gateway, gai_strerror(error));
}
if (gres->ai_next && (options & F_VERBOSE))
warnx("gateway resolves to multiple addresses");
if (setsockopt(s, IPPROTO_IPV6, IPV6_NEXTHOP,
gres->ai_addr, gres->ai_addrlen)) {
err(1, "setsockopt(IPV6_NEXTHOP)");
}
freeaddrinfo(gres);
}
/*
* let the kerel pass extension headers of incoming packets,
* for privileged socket options
*/
if ((options & F_VERBOSE) != 0) {
int opton = 1;
#ifdef IPV6_RECVHOPOPTS
if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVHOPOPTS, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_RECVHOPOPTS)");
#else /* old adv. API */
if (setsockopt(s, IPPROTO_IPV6, IPV6_HOPOPTS, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_HOPOPTS)");
#endif
#ifdef IPV6_RECVDSTOPTS
if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVDSTOPTS, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_RECVDSTOPTS)");
#else /* old adv. API */
if (setsockopt(s, IPPROTO_IPV6, IPV6_DSTOPTS, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_DSTOPTS)");
#endif
#ifdef IPV6_RECVRTHDRDSTOPTS
if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDRDSTOPTS, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_RECVRTHDRDSTOPTS)");
#endif
}
/* revoke root privilege */
seteuid(getuid());
setuid(getuid());
if ((options & F_FLOOD) && (options & F_INTERVAL))
errx(1, "-f and -i incompatible options");
if ((options & F_NOUSERDATA) == 0) {
if (datalen >= (int)sizeof(struct tv32)) {
/* we can time transfer */
timing = 1;
} else
timing = 0;
/* in F_VERBOSE case, we may get non-echoreply packets*/
if (options & F_VERBOSE)
packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
else
packlen = datalen + IP6LEN + ICMP6ECHOLEN + EXTRA;
} else {
/* suppress timing for node information query */
timing = 0;
datalen = 2048;
packlen = 2048 + IP6LEN + ICMP6ECHOLEN + EXTRA;
}
if (!(packet = (u_char *)malloc(packlen)))
err(1, "Unable to allocate packet");
if (!(options & F_PINGFILLED))
for (i = ICMP6ECHOLEN; i < packlen; ++i)
*datap++ = i;
ident = arc4random() & 0xFFFF;
memset(nonce, 0, sizeof(nonce));
for (i = 0; i < sizeof(nonce); i += sizeof(u_int32_t))
*((u_int32_t *)&nonce[i]) = arc4random();
hold = 1;
if (options & F_SO_DEBUG)
(void)setsockopt(s, SOL_SOCKET, SO_DEBUG, (char *)&hold,
sizeof(hold));
optval = IPV6_DEFHLIM;
if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
&optval, sizeof(optval)) == -1)
err(1, "IPV6_MULTICAST_HOPS");
#ifdef IPV6_USE_MIN_MTU
if (mflag != 1) {
optval = mflag > 1 ? 0 : 1;
if (setsockopt(s, IPPROTO_IPV6, IPV6_USE_MIN_MTU,
&optval, sizeof(optval)) == -1)
err(1, "setsockopt(IPV6_USE_MIN_MTU)");
}
#ifdef IPV6_RECVPATHMTU
else {
optval = 1;
if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVPATHMTU,
&optval, sizeof(optval)) == -1)
err(1, "setsockopt(IPV6_RECVPATHMTU)");
}
#endif /* IPV6_RECVPATHMTU */
#endif /* IPV6_USE_MIN_MTU */
#ifdef IPSEC
#ifdef IPSEC_POLICY_IPSEC
if (options & F_POLICY) {
if (setpolicy(s, policy_in) < 0)
errx(1, "%s", ipsec_strerror());
if (setpolicy(s, policy_out) < 0)
errx(1, "%s", ipsec_strerror());
}
#else
if (options & F_AUTHHDR) {
optval = IPSEC_LEVEL_REQUIRE;
#ifdef IPV6_AUTH_TRANS_LEVEL
if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
&optval, sizeof(optval)) == -1)
err(1, "setsockopt(IPV6_AUTH_TRANS_LEVEL)");
#else /* old def */
if (setsockopt(s, IPPROTO_IPV6, IPV6_AUTH_LEVEL,
&optval, sizeof(optval)) == -1)
err(1, "setsockopt(IPV6_AUTH_LEVEL)");
#endif
}
if (options & F_ENCRYPT) {
optval = IPSEC_LEVEL_REQUIRE;
if (setsockopt(s, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
&optval, sizeof(optval)) == -1)
err(1, "setsockopt(IPV6_ESP_TRANS_LEVEL)");
}
#endif /*IPSEC_POLICY_IPSEC*/
#endif
#ifdef ICMP6_FILTER
{
struct icmp6_filter filt;
if (!(options & F_VERBOSE)) {
ICMP6_FILTER_SETBLOCKALL(&filt);
if ((options & F_FQDN) || (options & F_FQDNOLD) ||
(options & F_NODEADDR) || (options & F_SUPTYPES))
ICMP6_FILTER_SETPASS(ICMP6_NI_REPLY, &filt);
else
ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filt);
} else {
ICMP6_FILTER_SETPASSALL(&filt);
}
if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
sizeof(filt)) < 0)
err(1, "setsockopt(ICMP6_FILTER)");
}
#endif /*ICMP6_FILTER*/
/* let the kerel pass extension headers of incoming packets */
if ((options & F_VERBOSE) != 0) {
int opton = 1;
#ifdef IPV6_RECVRTHDR
if (setsockopt(s, IPPROTO_IPV6, IPV6_RECVRTHDR, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_RECVRTHDR)");
#else /* old adv. API */
if (setsockopt(s, IPPROTO_IPV6, IPV6_RTHDR, &opton,
sizeof(opton)))
err(1, "setsockopt(IPV6_RTHDR)");
#endif
}
/*
optval = 1;
if (IN6_IS_ADDR_MULTICAST(&dst.sin6_addr))
if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
&optval, sizeof(optval)) == -1)
err(1, "IPV6_MULTICAST_LOOP");
*/
/* Specify the outgoing interface and/or the source address */
if (usepktinfo)
ip6optlen += CMSG_SPACE(sizeof(struct in6_pktinfo));
if (hoplimit != -1)
ip6optlen += CMSG_SPACE(sizeof(int));
#ifdef IPV6_REACHCONF
if (options & F_REACHCONF)
ip6optlen += CMSG_SPACE(0);
#endif
/* set IP6 packet options */
if (ip6optlen) {
if ((scmsg = (char *)malloc(ip6optlen)) == 0)
errx(1, "can't allocate enough memory");
smsghdr.msg_control = (caddr_t)scmsg;
smsghdr.msg_controllen = ip6optlen;
scmsgp = (struct cmsghdr *)scmsg;
}
if (usepktinfo) {
pktinfo = (struct in6_pktinfo *)(CMSG_DATA(scmsgp));
memset(pktinfo, 0, sizeof(*pktinfo));
scmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
scmsgp->cmsg_level = IPPROTO_IPV6;
scmsgp->cmsg_type = IPV6_PKTINFO;
scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
}
/* set the outgoing interface */
if (ifname) {
#ifndef USE_SIN6_SCOPE_ID
/* pktinfo must have already been allocated */
if ((pktinfo->ipi6_ifindex = if_nametoindex(ifname)) == 0)
errx(1, "%s: invalid interface name", ifname);
#else
if ((dst.sin6_scope_id = if_nametoindex(ifname)) == 0)
errx(1, "%s: invalid interface name", ifname);
#endif
}
if (hoplimit != -1) {
scmsgp->cmsg_len = CMSG_LEN(sizeof(int));
scmsgp->cmsg_level = IPPROTO_IPV6;
scmsgp->cmsg_type = IPV6_HOPLIMIT;
*(int *)(CMSG_DATA(scmsgp)) = hoplimit;
scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
}
#ifdef IPV6_REACHCONF
if (options & F_REACHCONF) {
scmsgp->cmsg_len = CMSG_LEN(0);
scmsgp->cmsg_level = IPPROTO_IPV6;
scmsgp->cmsg_type = IPV6_REACHCONF;
scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
}
#endif
if (argc > 1) { /* some intermediate addrs are specified */
#ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
int hops, error;
int rthdrlen;
rthdrlen = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
scmsgp->cmsg_len = CMSG_LEN(rthdrlen);
scmsgp->cmsg_level = IPPROTO_IPV6;
scmsgp->cmsg_type = IPV6_RTHDR;
rthdr = (struct ip6_rthdr *)CMSG_DATA(scmsgp);
rthdr = inet6_rth_init((void *)rthdr, rthdrlen,
IPV6_RTHDR_TYPE_0, argc - 1);
if (rthdr == NULL)
errx(1, "can't initialize rthdr");
for (hops = 0; hops < argc - 1; hops++) {
struct addrinfo *iaip;
if ((error = getaddrinfo(argv[hops], NULL, &hints,
&iaip)))
errx(1, "%s", gai_strerror(error));
if (SIN6(iaip->ai_addr)->sin6_family != AF_INET6)
errx(1,
"bad addr family of an intermediate addr");
if (inet6_rth_add(rthdr,
&(SIN6(iaip->ai_addr))->sin6_addr))
errx(1, "can't add an intermediate node");
freeaddrinfo(iaip);
}
scmsgp = CMSG_NXTHDR(&smsghdr, scmsgp);
#else
errx(1, "compiled without support for routing headers");
#endif
}
if (!(options & F_SRCADDR)) {
/*
* get the source address. XXX since we revoked the root
* privilege, we cannot use a raw socket for this.
*/
int dummy;
socklen_t len = sizeof(src);
if ((dummy = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)
err(1, "UDP socket");
src.sin6_family = AF_INET6;
src.sin6_addr = dst.sin6_addr;
src.sin6_port = ntohs(DUMMY_PORT);
src.sin6_scope_id = dst.sin6_scope_id;
if (pktinfo &&
setsockopt(dummy, IPPROTO_IPV6, IPV6_PKTINFO,
(void *)pktinfo, sizeof(*pktinfo)))
err(1, "UDP setsockopt(IPV6_PKTINFO)");
if (hoplimit != -1 &&
setsockopt(dummy, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
(void *)&hoplimit, sizeof(hoplimit)))
err(1, "UDP setsockopt(IPV6_UNICAST_HOPS)");
if (hoplimit != -1 &&
setsockopt(dummy, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
(void *)&hoplimit, sizeof(hoplimit)))
err(1, "UDP setsockopt(IPV6_MULTICAST_HOPS)");
#ifdef ANDROID_INCLUDE_RTHDR_SUPPORT
if (rthdr &&
setsockopt(dummy, IPPROTO_IPV6, IPV6_RTHDR,
(void *)rthdr, (rthdr->ip6r_len + 1) << 3))
err(1, "UDP setsockopt(IPV6_RTHDR)");
#endif