Merge "Update ping from 020927 to the latest s20121221."
diff --git a/Android.mk b/Android.mk
index 5eaa892..6f72dd4 100644
--- a/Android.mk
+++ b/Android.mk
@@ -3,4 +3,5 @@
include $(CLEAR_VARS)
LOCAL_SRC_FILES:= ping.c ping_common.c
LOCAL_MODULE := ping
+LOCAL_CFLAGS := -DWITHOUT_IFADDRS
include $(BUILD_EXECUTABLE)
diff --git a/SNAPSHOT.h b/SNAPSHOT.h
index 6fc6b9c..702ccd3 100644
--- a/SNAPSHOT.h
+++ b/SNAPSHOT.h
@@ -1 +1 @@
-static char SNAPSHOT[] = "020927";
+static char SNAPSHOT[] = "s20121221";
diff --git a/ping.c b/ping.c
index 2b41f44..25bbc3c 100644
--- a/ping.c
+++ b/ping.c
@@ -62,6 +62,16 @@
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
+#ifndef WITHOUT_IFADDRS
+#include <ifaddrs.h>
+#endif
+
+#ifndef ICMP_FILTER
+#define ICMP_FILTER 1
+struct icmp_filter {
+ __u32 data;
+};
+#endif
#ifdef ANDROID
#include <sys/auxv.h>
@@ -72,6 +82,7 @@
#define MAXICMPLEN 76
#define NROUTES 9 /* number of record route slots */
#define TOS_MAX 255 /* 8-bit TOS field */
+#define MAX_HOSTNAMELEN NI_MAXHOST
static int ts_type;
@@ -116,7 +127,12 @@
int ch, hold, packlen;
int socket_errno;
u_char *packet;
- char *target, hnamebuf[MAXHOSTNAMELEN];
+ char *target;
+#ifdef USE_IDN
+ char *hnamebuf = NULL;
+#else
+ char hnamebuf[MAX_HOSTNAMELEN];
+#endif
char rspace[3 + 4 * NROUTES + 1]; /* record route space */
#ifdef ANDROID
@@ -126,6 +142,14 @@
}
#endif
+ limit_capabilities();
+
+#ifdef USE_IDN
+ setlocale(LC_ALL, "");
+#endif
+
+ enable_capability_raw();
+
icmp_sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP);
if (icmp_sock != -1)
using_ping_socket = 1;
@@ -133,10 +157,7 @@
icmp_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
socket_errno = errno;
- uid = getuid();
-#ifndef ANDROID
- setuid(uid);
-#endif
+ disable_capability_raw();
source.sin_family = AF_INET;
@@ -144,7 +165,7 @@
while ((ch = getopt(argc, argv, COMMON_OPTSTR "bRT:")) != EOF) {
switch(ch) {
case 'b':
- broadcast_pings = 1;
+ broadcast_pings = 1;
break;
case 'Q':
settos = parsetos(optarg);
@@ -181,6 +202,7 @@
break;
case 'I':
{
+#if 0
char dummy;
int i1, i2, i3, i4;
@@ -196,6 +218,12 @@
} else {
device = optarg;
}
+#else
+ if (inet_pton(AF_INET, optarg, &source.sin_addr) > 0)
+ options |= F_STRICTSOURCE;
+ else
+ device = optarg;
+#endif
break;
}
case 'M':
@@ -211,7 +239,7 @@
}
break;
case 'V':
- printf("ping utility, iputils-ss%s\n", SNAPSHOT);
+ printf("ping utility, iputils-%s\n", SNAPSHOT);
exit(0);
COMMON_OPTIONS
common_options(ch);
@@ -223,7 +251,7 @@
argc -= optind;
argv += optind;
- if (argc == 0)
+ if (argc == 0)
usage();
if (argc > 1) {
if (options & F_RROUTE)
@@ -242,21 +270,51 @@
while (argc > 0) {
target = *argv;
- bzero((char *)&whereto, sizeof(whereto));
+ memset((char *)&whereto, 0, sizeof(whereto));
whereto.sin_family = AF_INET;
if (inet_aton(target, &whereto.sin_addr) == 1) {
hostname = target;
if (argc == 1)
options |= F_NUMERIC;
} else {
- hp = gethostbyname(target);
+ char *idn;
+#ifdef USE_IDN
+ int rc;
+
+ if (hnamebuf) {
+ free(hnamebuf);
+ hnamebuf = NULL;
+ }
+
+ rc = idna_to_ascii_lz(target, &idn, 0);
+ if (rc != IDNA_SUCCESS) {
+ fprintf(stderr, "ping: IDN encoding failed: %s\n", idna_strerror(rc));
+ exit(2);
+ }
+#else
+ idn = target;
+#endif
+ hp = gethostbyname(idn);
if (!hp) {
fprintf(stderr, "ping: unknown host %s\n", target);
exit(2);
}
+#ifdef USE_IDN
+ free(idn);
+#endif
memcpy(&whereto.sin_addr, hp->h_addr, 4);
+#ifdef USE_IDN
+ if (idna_to_unicode_lzlz(hp->h_name, &hnamebuf, 0) != IDNA_SUCCESS) {
+ hnamebuf = strdup(hp->h_name);
+ if (!hnamebuf) {
+ perror("ping: strdup");
+ exit(-1);
+ }
+ }
+#else
strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1);
hnamebuf[sizeof(hnamebuf) - 1] = 0;
+#endif
hostname = hnamebuf;
}
if (argc > 1)
@@ -266,7 +324,7 @@
}
if (source.sin_addr.s_addr == 0) {
- int alen;
+ socklen_t alen;
struct sockaddr_in dst = whereto;
int probe_fd = socket(AF_INET, SOCK_DGRAM, 0);
@@ -276,9 +334,16 @@
}
if (device) {
struct ifreq ifr;
+ int rc;
+
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, device, IFNAMSIZ-1);
- if (setsockopt(probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1) == -1) {
+
+ enable_capability_raw();
+ rc = setsockopt(probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1);
+ disable_capability_raw();
+
+ if (rc == -1) {
if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) {
struct ip_mreqn imr;
if (ioctl(probe_fd, SIOCGIFINDEX, &ifr) < 0) {
@@ -291,6 +356,9 @@
perror("ping: IP_MULTICAST_IF");
exit(2);
}
+ } else {
+ perror("ping: SO_BINDTODEVICE");
+ exit(2);
}
}
}
@@ -329,6 +397,30 @@
exit(2);
}
source.sin_port = 0;
+
+#ifndef WITHOUT_IFADDRS
+ if (device) {
+ struct ifaddrs *ifa0, *ifa;
+ int ret;
+
+ ret = getifaddrs(&ifa0);
+ if (ret) {
+ fprintf(stderr, "gatifaddrs() failed.\n");
+ exit(2);
+ }
+ for (ifa = ifa0; ifa; ifa = ifa->ifa_next) {
+ if (!ifa->ifa_addr || ifa->ifa_addr->sa_family != AF_INET)
+ continue;
+ if (!strncmp(ifa->ifa_name, device, sizeof(device) - 1) &&
+ !memcmp(&((struct sockaddr_in *)ifa->ifa_addr)->sin_addr,
+ &source.sin_addr, sizeof(source.sin_addr)))
+ break;
+ }
+ freeifaddrs(ifa0);
+ if (!ifa)
+ fprintf(stderr, "ping: Warning: source address might be selected on device other than %s.\n", device);
+ }
+#endif
close(probe_fd);
} while (0);
@@ -428,7 +520,7 @@
/* record route option */
if (options & F_RROUTE) {
- bzero(rspace, sizeof(rspace));
+ memset(rspace, 0, sizeof(rspace));
rspace[0] = IPOPT_NOP;
rspace[1+IPOPT_OPTVAL] = IPOPT_RR;
rspace[1+IPOPT_OLEN] = sizeof(rspace)-1;
@@ -440,7 +532,7 @@
}
}
if (options & F_TIMESTAMP) {
- bzero(rspace, sizeof(rspace));
+ memset(rspace, 0, sizeof(rspace));
rspace[0] = IPOPT_TIMESTAMP;
rspace[1] = (ts_type==IPOPT_TS_TSONLY ? 40 : 36);
rspace[2] = 5;
@@ -461,8 +553,8 @@
optlen = 40;
}
if (options & F_SOURCEROUTE) {
- int i;
- bzero(rspace, sizeof(rspace));
+ int i;
+ memset(rspace, 0, sizeof(rspace));
rspace[0] = IPOPT_NOOP;
rspace[1+IPOPT_OPTVAL] = (options & F_SO_DONTROUTE) ? IPOPT_SSRR
: IPOPT_LSRR;
@@ -470,7 +562,7 @@
rspace[1+IPOPT_OFFSET] = IPOPT_MINOFF;
for (i=0; i<nroute; i++)
*(__u32*)&rspace[4+i*4] = route[i];
-
+
if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, 4 + nroute*4) < 0) {
perror("ping: record route");
exit(2);
@@ -490,7 +582,7 @@
perror ("ping: can't set broadcasting");
exit(2);
}
- }
+ }
if (options & F_NOLOOP) {
int loop = 0;
@@ -585,7 +677,7 @@
if (options & F_QUIET)
goto out;
if (options & F_FLOOD)
- write(STDOUT_FILENO, "E", 1);
+ write_stdout("E", 1);
else if (e->ee_errno != EMSGSIZE)
fprintf(stderr, "ping: local error: %s\n", strerror(e->ee_errno));
else
@@ -630,8 +722,9 @@
goto out;
if (options & F_FLOOD) {
if (error_pkt)
- write(STDOUT_FILENO, "\bE", 2);
+ write_stdout("\bE", 2);
} else {
+ print_timestamp();
printf("From %s: icmp_seq=%u ", pr_addr(sin->sin_addr.s_addr), ntohs(icmph.un.echo.sequence));
pr_icmph(e->ee_type, e->ee_code, e->ee_info, NULL);
fflush(stdout);
@@ -664,16 +757,13 @@
icp->un.echo.sequence = htons(ntransmitted+1);
icp->un.echo.id = ident; /* ID */
- CLR((ntransmitted+1) % mx_dup_ck);
+ rcvd_clear(ntransmitted+1);
if (timing) {
if (options&F_LATENCY) {
- static volatile int fake_fucked_egcs = sizeof(struct timeval);
struct timeval tmp_tv;
gettimeofday(&tmp_tv, NULL);
- /* egcs is crap or glibc is crap, but memcpy
- does not copy anything, if len is constant! */
- memcpy(icp+1, &tmp_tv, fake_fucked_egcs);
+ memcpy(icp+1, &tmp_tv, sizeof(tmp_tv));
} else {
memset(icp+1, 0, sizeof(struct timeval));
}
@@ -685,16 +775,13 @@
icp->checksum = in_cksum((u_short *)icp, cc, 0);
if (timing && !(options&F_LATENCY)) {
- static volatile int fake_fucked_egcs = sizeof(struct timeval);
- struct timeval tmp_tv;
+ struct timeval tmp_tv;
gettimeofday(&tmp_tv, NULL);
- /* egcs is crap or glibc is crap, but memcpy
- does not copy anything, if len is constant! */
- memcpy(icp+1, &tmp_tv, fake_fucked_egcs);
- icp->checksum = in_cksum((u_short *)(icp+1), fake_fucked_egcs, ~icp->checksum);
+ memcpy(icp+1, &tmp_tv, sizeof(tmp_tv));
+ icp->checksum = in_cksum((u_short *)&tmp_tv, sizeof(tmp_tv), ~icp->checksum);
}
- do {
+ do {
static struct iovec iov = {outpack, 0};
static struct msghdr m = { &whereto, sizeof(whereto),
&iov, 1, &cmsg, 0, 0 };
@@ -715,6 +802,12 @@
* which arrive ('tis only fair). This permits multiple copies of this
* program to be run without having intermingled output (or statistics!).
*/
+void pr_echo_reply(__u8 *_icp, int len)
+{
+ struct icmphdr *icp = (struct icmphdr *)_icp;
+ printf(" icmp_seq=%u", ntohs(icp->un.echo.sequence));
+}
+
int
parse_reply(struct msghdr *msg, int cc, void *addr, struct timeval *tv)
{
@@ -769,16 +862,17 @@
if (icp->type == ICMP_ECHOREPLY) {
if (icp->un.echo.id != ident)
return 1; /* 'Twas not our ECHO */
- if (gather_statistics((__u8*)(icp+1), cc,
+ if (gather_statistics((__u8*)icp, sizeof(*icp), cc,
ntohs(icp->un.echo.sequence),
- ttl, 0, tv, pr_addr(from->sin_addr.s_addr)))
+ ttl, 0, tv, pr_addr(from->sin_addr.s_addr),
+ pr_echo_reply))
return 0;
} else {
/* We fall here when a redirect or source quench arrived.
* Also this branch processes icmp errors, when IP_RECVERR
* is broken. */
-
- switch (icp->type) {
+
+ switch (icp->type) {
case ICMP_ECHO:
/* MUST NOT */
return 1;
@@ -821,9 +915,10 @@
return !error_pkt;
if (options & F_FLOOD) {
if (error_pkt)
- write(STDOUT_FILENO, "\bE", 2);
+ write_stdout("\bE", 2);
return !error_pkt;
}
+ print_timestamp();
printf("From %s: icmp_seq=%u ",
pr_addr(from->sin_addr.s_addr),
ntohs(icp1->un.echo.sequence));
@@ -832,19 +927,24 @@
pr_icmph(icp->type, icp->code, ntohl(icp->un.gateway), icp);
return !error_pkt;
}
- default:
+ default:
/* MUST NOT */
break;
}
if ((options & F_FLOOD) && !(options & (F_VERBOSE|F_QUIET))) {
if (!csfailed)
- write(STDOUT_FILENO, "!E", 2);
+ write_stdout("!E", 2);
else
- write(STDOUT_FILENO, "!EC", 3);
+ write_stdout("!EC", 3);
return 0;
}
if (!(options & F_VERBOSE) || uid)
return 0;
+ if (options & F_PTIMEOFDAY) {
+ struct timeval recv_time;
+ gettimeofday(&recv_time, NULL);
+ printf("%lu.%06lu ", (unsigned long)recv_time.tv_sec, (unsigned long)recv_time.tv_usec);
+ }
printf("From %s: ", pr_addr(from->sin_addr.s_addr));
if (csfailed) {
printf("(BAD CHECKSUM)\n");
@@ -861,10 +961,22 @@
putchar('\a');
putchar('\n');
fflush(stdout);
+ } else {
+ putchar('\a');
+ fflush(stdout);
}
return 0;
}
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+# define ODDBYTE(v) (v)
+#elif BYTE_ORDER == BIG_ENDIAN
+# define ODDBYTE(v) ((u_short)(v) << 8)
+#else
+# define ODDBYTE(v) htons((u_short)(v) << 8)
+#endif
+
u_short
in_cksum(const u_short *addr, register int len, u_short csum)
{
@@ -886,7 +998,7 @@
/* mop up an odd byte, if necessary */
if (nleft == 1)
- sum += htons(*(u_char *)w << 8);
+ sum += ODDBYTE(*(u_char *)w); /* le16toh() may be unavailable on old systems */
/*
* add back carry outs from top 16 bits to low 16 bits
@@ -928,9 +1040,36 @@
case ICMP_SR_FAILED:
printf("Source Route Failed\n");
break;
+ case ICMP_NET_UNKNOWN:
+ printf("Destination Net Unknown\n");
+ break;
+ case ICMP_HOST_UNKNOWN:
+ printf("Destination Host Unknown\n");
+ break;
+ case ICMP_HOST_ISOLATED:
+ printf("Source Host Isolated\n");
+ break;
+ case ICMP_NET_ANO:
+ printf("Destination Net Prohibited\n");
+ break;
+ case ICMP_HOST_ANO:
+ printf("Destination Host Prohibited\n");
+ break;
+ case ICMP_NET_UNR_TOS:
+ printf("Destination Net Unreachable for Type of Service\n");
+ break;
+ case ICMP_HOST_UNR_TOS:
+ printf("Destination Host Unreachable for Type of Service\n");
+ break;
case ICMP_PKT_FILTERED:
printf("Packet filtered\n");
break;
+ case ICMP_PREC_VIOLATION:
+ printf("Precedence Violation\n");
+ break;
+ case ICMP_PREC_CUTOFF:
+ printf("Precedence Cutoff\n");
+ break;
default:
printf("Dest Unreachable, Bad Code: %d\n", code);
break;
@@ -1076,9 +1215,9 @@
i = j;
i -= IPOPT_MINOFF;
if (i <= 0)
- continue;
+ break;
if (i == old_rrlen
- && !bcmp((char *)cp, old_rr, i)
+ && !memcmp(cp, old_rr, i)
&& !(options & F_FLOOD)) {
printf("\t(same route)");
i = ((i + 3) / 4) * 4;
@@ -1086,7 +1225,7 @@
break;
}
old_rrlen = i;
- bcopy((char *)cp, old_rr, i);
+ memcpy(old_rr, (char *)cp, i);
printf("\nRR: ");
cp++;
for (;;) {
@@ -1113,7 +1252,7 @@
i = j;
i -= 5;
if (i <= 0)
- continue;
+ break;
flags = *++cp;
printf("\nTS: ");
cp++;
@@ -1204,12 +1343,28 @@
struct hostent *hp;
static char buf[4096];
- if ((options & F_NUMERIC) ||
+ in_pr_addr = !setjmp(pr_addr_jmp);
+
+ if (exiting || (options & F_NUMERIC) ||
!(hp = gethostbyaddr((char *)&addr, 4, AF_INET)))
sprintf(buf, "%s", inet_ntoa(*(struct in_addr *)&addr));
- else
- snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
+ else {
+ char *s;
+#if USE_IDN
+ if (idna_to_unicode_lzlz(hp->h_name, &s, 0) != IDNA_SUCCESS)
+ s = NULL;
+#else
+ s = NULL;
+#endif
+ snprintf(buf, sizeof(buf), "%s (%s)", s ? s : hp->h_name,
inet_ntoa(*(struct in_addr *)&addr));
+#if USE_IDN
+ free(s);
+#endif
+ }
+
+ in_pr_addr = 0;
+
return(buf);
}
@@ -1217,27 +1372,27 @@
/* Set Type of Service (TOS) and other Quality of Service relating bits */
int parsetos(char *str)
{
- const char *cp;
- int tos;
- char *ep;
+ const char *cp;
+ int tos;
+ char *ep;
- /* handle both hex and decimal values */
- if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
+ /* handle both hex and decimal values */
+ if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
cp = str + 2;
tos = (int)strtol(cp, &ep, 16);
- } else
- tos = (int)strtol(str, &ep, 10);
+ } else
+ tos = (int)strtol(str, &ep, 10);
- /* doesn't look like decimal or hex, eh? */
- if (*ep != '\0') {
- fprintf(stderr, "ping: \"%s\" bad value for TOS\n", str);
- exit(2);
- }
+ /* doesn't look like decimal or hex, eh? */
+ if (*ep != '\0') {
+ fprintf(stderr, "ping: \"%s\" bad value for TOS\n", str);
+ exit(2);
+ }
- if (tos > TOS_MAX) {
- fprintf(stderr, "ping: the decimal value of TOS bits must be 0-254 (or zero)\n");
- exit(2);
- }
+ if (tos > TOS_MAX) {
+ fprintf(stderr, "ping: the decimal value of TOS bits must be 0-254 (or zero)\n");
+ exit(2);
+ }
return(tos);
}
@@ -1266,19 +1421,40 @@
once = 1;
/* Patch bpflet for current identifier. */
- insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __constant_htons(ident), 0, 1);
+ insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, htons(ident), 0, 1);
if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)))
perror("WARNING: failed to install socket filter\n");
}
+#define USAGE_NEWLINE "\n "
void usage(void)
{
fprintf(stderr,
-"Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]\n"
-" [-p pattern] [-s packetsize] [-t ttl] [-I interface or address]\n"
-" [-M mtu discovery hint] [-S sndbuf]\n"
-" [ -T timestamp option ] [ -Q tos ] [hop1 ...] destination\n");
+ "Usage: ping"
+ " [-"
+ "aAbBdDfhLnOqrRUvV"
+ "]"
+ " [-c count]"
+ " [-i interval]"
+ " [-I interface]"
+ USAGE_NEWLINE
+ " [-m mark]"
+ " [-M pmtudisc_option]"
+ " [-l preload]"
+ " [-p pattern]"
+ " [-Q tos]"
+ USAGE_NEWLINE
+ " [-s packetsize]"
+ " [-S sndbuf]"
+ " [-t ttl]"
+ " [-T timestamp_option]"
+ USAGE_NEWLINE
+ " [-w deadline]"
+ " [-W timeout]"
+ " [hop1 ...] destination"
+ "\n"
+ );
exit(2);
}
diff --git a/ping6.c b/ping6.c
new file mode 100644
index 0000000..c39864d
--- /dev/null
+++ b/ping6.c
@@ -0,0 +1,1861 @@
+/*
+ *
+ * Modified for AF_INET6 by Pedro Roque
+ *
+ * <roque@di.fc.ul.pt>
+ *
+ * Original copyright notice included bellow
+ */
+
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Muuss.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. 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.
+ *
+ * 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.
+ */
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
+ 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 "ping_common.h"
+
+#include <linux/filter.h>
+#include <netinet/ip6.h>
+#include <netinet/icmp6.h>
+#include <resolv.h>
+#ifndef WITHOUT_IFADDRS
+#include <ifaddrs.h>
+#endif
+
+#ifdef USE_IDN
+#include <stringprep.h>
+#endif
+
+#include "ping6_niquery.h"
+#include "in6_flowlabel.h"
+
+#ifndef SOL_IPV6
+#define SOL_IPV6 IPPROTO_IPV6
+#endif
+
+#ifndef SOL_ICMPV6
+#define SOL_ICMPV6 IPPROTO_ICMPV6
+#endif
+
+/* RFC3542 */
+#ifndef ICMP6_DST_UNREACH_BEYONDSCOPE
+#define ICMP6_DST_UNREACH_BEYONDSCOPE ICMP6_DST_UNREACH_NOTNEIGHBOR
+#endif
+
+#if defined(ENABLE_PING6_RTHDR) && !defined(ENABLE_PING6_RTHDR_RFC3542)
+#ifndef IPV6_SRCRT_TYPE_0
+#define IPV6_SRCRT_TYPE_0 0
+#endif
+#endif
+
+#ifndef MLD_LISTENER_QUERY
+#define MLD_LISTENER_QUERY 130
+#define MLD_LISTENER_REPORT 131
+#define MLD_LISTENER_REDUCTION 132
+#endif
+
+#define BIT_CLEAR(nr, addr) do { ((__u32 *)(addr))[(nr) >> 5] &= ~(1U << ((nr) & 31)); } while(0)
+#define BIT_SET(nr, addr) do { ((__u32 *)(addr))[(nr) >> 5] |= (1U << ((nr) & 31)); } while(0)
+#define BIT_TEST(nr, addr) do { (__u32 *)(addr))[(nr) >> 5] & (1U << ((nr) & 31)); } while(0)
+
+#ifndef ICMP6_FILTER_WILLPASS
+#define ICMP6_FILTER_WILLPASS(type, filterp) \
+ (BIT_TEST((type), filterp) == 0)
+
+#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
+ BIT_TEST((type), filterp)
+
+#define ICMP6_FILTER_SETPASS(type, filterp) \
+ BIT_CLEAR((type), filterp)
+
+#define ICMP6_FILTER_SETBLOCK(type, filterp) \
+ BIT_SET((type), filterp)
+
+#define ICMP6_FILTER_SETPASSALL(filterp) \
+ memset(filterp, 0, sizeof(struct icmp6_filter));
+
+#define ICMP6_FILTER_SETBLOCKALL(filterp) \
+ memset(filterp, 0xFF, sizeof(struct icmp6_filter));
+#endif
+
+#define MAXPACKET 128000 /* max packet size */
+
+#ifdef SO_TIMESTAMP
+#define HAVE_SIN6_SCOPEID 1
+#endif
+
+#ifndef SCOPE_DELIMITER
+# define SCOPE_DELIMITER '%'
+#endif
+
+__u32 flowlabel;
+__u32 tclass;
+#ifdef ENABLE_PING6_RTHDR
+struct cmsghdr *srcrt;
+#endif
+
+struct sockaddr_in6 whereto; /* who to ping */
+u_char outpack[MAXPACKET];
+int maxpacket = sizeof(outpack);
+
+static unsigned char cmsgbuf[4096];
+static int cmsglen = 0;
+
+static char * pr_addr(struct in6_addr *addr);
+static char * pr_addr_n(struct in6_addr *addr);
+static int pr_icmph(__u8 type, __u8 code, __u32 info);
+static void usage(void) __attribute((noreturn));
+
+struct sockaddr_in6 source;
+char *device;
+int pmtudisc=-1;
+
+static int icmp_sock;
+
+#ifdef USE_GNUTLS
+# include <gnutls/openssl.h>
+#else
+# include <openssl/md5.h>
+#endif
+
+/* Node Information query */
+int ni_query = -1;
+int ni_flag = 0;
+void *ni_subject = NULL;
+int ni_subject_len = 0;
+int ni_subject_type = -1;
+char *ni_group;
+
+static inline int ntohsp(__u16 *p)
+{
+ __u16 v;
+ memcpy(&v, p, sizeof(v));
+ return ntohs(v);
+}
+
+#if defined(ENABLE_PING6_RTHDR) && !defined(ENABLE_PING6_RTHDR_RFC3542)
+size_t inet6_srcrt_space(int type, int segments)
+{
+ if (type != 0 || segments > 24)
+ return 0;
+
+ return (sizeof(struct cmsghdr) + sizeof(struct ip6_rthdr0) +
+ segments * sizeof(struct in6_addr));
+}
+
+extern struct cmsghdr * inet6_srcrt_init(void *bp, int type)
+{
+ struct cmsghdr *cmsg;
+
+ if (type)
+ return NULL;
+
+ memset(bp, 0, sizeof(struct cmsghdr) + sizeof(struct ip6_rthdr0));
+ cmsg = (struct cmsghdr *) bp;
+
+ cmsg->cmsg_len = sizeof(struct cmsghdr) + sizeof(struct ip6_rthdr0);
+ cmsg->cmsg_level = SOL_IPV6;
+ cmsg->cmsg_type = IPV6_RTHDR;
+
+ return cmsg;
+}
+
+int inet6_srcrt_add(struct cmsghdr *cmsg, const struct in6_addr *addr)
+{
+ struct ip6_rthdr0 *hdr;
+
+ hdr = (struct ip6_rthdr0 *) CMSG_DATA(cmsg);
+
+ cmsg->cmsg_len += sizeof(struct in6_addr);
+ hdr->ip6r0_len += sizeof(struct in6_addr) / 8;
+
+ memcpy(&hdr->ip6r0_addr[hdr->ip6r0_segleft++], addr,
+ sizeof(struct in6_addr));
+
+ return 0;
+}
+#endif
+
+unsigned int if_name2index(const char *ifname)
+{
+ unsigned int i = if_nametoindex(ifname);
+ if (!i) {
+ fprintf(stderr, "ping: unknown iface %s\n", ifname);
+ exit(2);
+ }
+ return i;
+}
+
+struct niquery_option {
+ char *name;
+ int namelen;
+ int has_arg;
+ int data;
+ int (*handler)(int index, const char *arg);
+};
+
+#define NIQUERY_OPTION(_name, _has_arg, _data, _handler) \
+ { \
+ .name = _name, \
+ .namelen = sizeof(_name) - 1, \
+ .has_arg = _has_arg, \
+ .data = _data, \
+ .handler = _handler \
+ }
+
+static int niquery_option_name_handler(int index, const char *arg);
+static int niquery_option_ipv6_handler(int index, const char *arg);
+static int niquery_option_ipv6_flag_handler(int index, const char *arg);
+static int niquery_option_ipv4_handler(int index, const char *arg);
+static int niquery_option_ipv4_flag_handler(int index, const char *arg);
+static int niquery_option_subject_addr_handler(int index, const char *arg);
+static int niquery_option_subject_name_handler(int index, const char *arg);
+static int niquery_option_help_handler(int index, const char *arg);
+
+struct niquery_option niquery_options[] = {
+ NIQUERY_OPTION("name", 0, 0, niquery_option_name_handler),
+ NIQUERY_OPTION("fqdn", 0, 0, niquery_option_name_handler),
+ NIQUERY_OPTION("ipv6", 0, 0, niquery_option_ipv6_handler),
+ NIQUERY_OPTION("ipv6-all", 0, NI_IPV6ADDR_F_ALL, niquery_option_ipv6_flag_handler),
+ NIQUERY_OPTION("ipv6-compatible", 0, NI_IPV6ADDR_F_COMPAT, niquery_option_ipv6_flag_handler),
+ NIQUERY_OPTION("ipv6-linklocal", 0, NI_IPV6ADDR_F_LINKLOCAL, niquery_option_ipv6_flag_handler),
+ NIQUERY_OPTION("ipv6-sitelocal", 0, NI_IPV6ADDR_F_SITELOCAL, niquery_option_ipv6_flag_handler),
+ NIQUERY_OPTION("ipv6-global", 0, NI_IPV6ADDR_F_GLOBAL, niquery_option_ipv6_flag_handler),
+ NIQUERY_OPTION("ipv4", 0, 0, niquery_option_ipv4_handler),
+ NIQUERY_OPTION("ipv4-all", 0, NI_IPV4ADDR_F_ALL, niquery_option_ipv4_flag_handler),
+ NIQUERY_OPTION("subject-ipv6", 1, NI_SUBJ_IPV6, niquery_option_subject_addr_handler),
+ NIQUERY_OPTION("subject-ipv4", 1, NI_SUBJ_IPV4, niquery_option_subject_addr_handler),
+ NIQUERY_OPTION("subject-name", 1, 0, niquery_option_subject_name_handler),
+ NIQUERY_OPTION("subject-fqdn", 1, -1, niquery_option_subject_name_handler),
+ NIQUERY_OPTION("help", 0, 0, niquery_option_help_handler),
+ {},
+};
+
+static inline int niquery_is_enabled(void)
+{
+ return ni_query >= 0;
+}
+
+#if PING6_NONCE_MEMORY
+__u8 *ni_nonce_ptr;
+#else
+struct {
+ struct timeval tv;
+ pid_t pid;
+} ni_nonce_secret;
+#endif
+
+static void niquery_init_nonce(void)
+{
+#if PING6_NONCE_MEMORY
+ struct timeval tv;
+ unsigned long seed;
+
+ seed = (unsigned long)getpid();
+ if (!gettimeofday(&tv, NULL))
+ seed ^= tv.tv_usec;
+ srand(seed);
+
+ ni_nonce_ptr = calloc(NI_NONCE_SIZE, MAX_DUP_CHK);
+ if (!ni_nonce_ptr) {
+ perror("ping6: calloc");
+ exit(2);
+ }
+
+ ni_nonce_ptr[0] = ~0;
+#else
+ gettimeofday(&ni_nonce_secret.tv, NULL);
+ ni_nonce_secret.pid = getpid();
+#endif
+}
+
+#if !PING6_NONCE_MEMORY
+static int niquery_nonce(__u8 *nonce, int fill)
+{
+ static __u8 digest[MD5_DIGEST_LENGTH];
+ static int seq = -1;
+
+ if (fill || seq != *(__u16 *)nonce || seq < 0) {
+ MD5_CTX ctxt;
+
+ MD5_Init(&ctxt);
+ MD5_Update(&ctxt, &ni_nonce_secret, sizeof(ni_nonce_secret));
+ MD5_Update(&ctxt, nonce, sizeof(__u16));
+ MD5_Final(digest, &ctxt);
+
+ seq = *(__u16 *)nonce;
+ }
+
+ if (fill) {
+ memcpy(nonce + sizeof(__u16), digest, NI_NONCE_SIZE - sizeof(__u16));
+ return 0;
+ } else {
+ if (memcmp(nonce + sizeof(__u16), digest, NI_NONCE_SIZE - sizeof(__u16)))
+ return -1;
+ return ntohsp((__u16 *)nonce);
+ }
+}
+#endif
+
+static inline void niquery_fill_nonce(__u16 seq, __u8 *nonce)
+{
+ __u16 v = htons(seq);
+#if PING6_NONCE_MEMORY
+ int i;
+
+ memcpy(&ni_nonce_ptr[NI_NONCE_SIZE * (seq % MAX_DUP_CHK)], &v, sizeof(v));
+
+ for (i = sizeof(v); i < NI_NONCE_SIZE; i++)
+ ni_nonce_ptr[NI_NONCE_SIZE * (seq % MAX_DUP_CHK) + i] = 0x100 * (rand() / (RAND_MAX + 1.0));
+
+ memcpy(nonce, &ni_nonce_ptr[NI_NONCE_SIZE * (seq % MAX_DUP_CHK)], NI_NONCE_SIZE);
+#else
+ memcpy(nonce, &v, sizeof(v));
+ niquery_nonce(nonce, 1);
+#endif
+}
+
+static inline int niquery_check_nonce(__u8 *nonce)
+{
+#if PING6_NONCE_MEMORY
+ __u16 seq = ntohsp((__u16 *)nonce);
+ if (memcmp(nonce, &ni_nonce_ptr[NI_NONCE_SIZE * (seq % MAX_DUP_CHK)], NI_NONCE_SIZE))
+ return -1;
+ return seq;
+#else
+ return niquery_nonce(nonce, 0);
+#endif
+}
+
+static int niquery_set_qtype(int type)
+{
+ if (niquery_is_enabled() && ni_query != type) {
+ printf("Qtype conflict\n");
+ return -1;
+ }
+ ni_query = type;
+ return 0;
+}
+
+static int niquery_option_name_handler(int index, const char *arg)
+{
+ if (niquery_set_qtype(NI_QTYPE_NAME) < 0)
+ return -1;
+ return 0;
+}
+
+static int niquery_option_ipv6_handler(int index, const char *arg)
+{
+ if (niquery_set_qtype(NI_QTYPE_IPV6ADDR) < 0)
+ return -1;
+ return 0;
+}
+
+static int niquery_option_ipv6_flag_handler(int index, const char *arg)
+{
+ if (niquery_set_qtype(NI_QTYPE_IPV6ADDR) < 0)
+ return -1;
+ ni_flag |= niquery_options[index].data;
+ return 0;
+}
+
+static int niquery_option_ipv4_handler(int index, const char *arg)
+{
+ if (niquery_set_qtype(NI_QTYPE_IPV4ADDR) < 0)
+ return -1;
+ return 0;
+}
+
+static int niquery_option_ipv4_flag_handler(int index, const char *arg)
+{
+ if (niquery_set_qtype(NI_QTYPE_IPV4ADDR) < 0)
+ return -1;
+ ni_flag |= niquery_options[index].data;
+ return 0;
+}
+
+static inline int niquery_is_subject_valid(void)
+{
+ return ni_subject_type >= 0 && ni_subject;
+}
+
+static int niquery_set_subject_type(int type)
+{
+ if (niquery_is_subject_valid() && ni_subject_type != type) {
+ printf("Subject type conflict\n");
+ return -1;
+ }
+ ni_subject_type = type;
+ return 0;
+}
+
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
+#define OFFSET_OF(type,elem) ((size_t)&((type *)0)->elem)
+
+static int niquery_option_subject_addr_handler(int index, const char *arg)
+{
+ struct addrinfo hints, *ai0, *ai;
+ int offset;
+ int gai;
+
+ if (niquery_set_subject_type(niquery_options[index].data) < 0)
+ return -1;
+
+ ni_subject_type = niquery_options[index].data;
+
+ memset(&hints, 0, sizeof(hints));
+
+ switch (niquery_options[index].data) {
+ case NI_SUBJ_IPV6:
+ ni_subject_len = sizeof(struct in6_addr);
+ offset = OFFSET_OF(struct sockaddr_in6, sin6_addr);
+ hints.ai_family = AF_INET6;
+ break;
+ case NI_SUBJ_IPV4:
+ ni_subject_len = sizeof(struct in_addr);
+ offset = OFFSET_OF(struct sockaddr_in, sin_addr);
+ hints.ai_family = AF_INET;
+ break;
+ default:
+ /* should not happen. */
+ offset = -1;
+ }
+
+ hints.ai_socktype = SOCK_DGRAM;
+#ifdef USE_IDN
+ hints.ai_flags = AI_IDN;
+#endif
+
+ gai = getaddrinfo(arg, 0, &hints, &ai0);
+ if (gai) {
+ fprintf(stderr, "Unknown host: %s\n", arg);
+ return -1;
+ }
+
+ for (ai = ai0; ai; ai = ai->ai_next) {
+ void *p = malloc(ni_subject_len);
+ if (!p)
+ continue;
+ memcpy(p, (__u8 *)ai->ai_addr + offset, ni_subject_len);
+ free(ni_subject);
+ ni_subject = p;
+ break;
+ }
+ freeaddrinfo(ai0);
+
+ return 0;
+}
+
+static int niquery_option_subject_name_handler(int index, const char *arg)
+{
+ static char nigroup_buf[INET6_ADDRSTRLEN + 1 + IFNAMSIZ];
+ unsigned char *dnptrs[2], **dpp, **lastdnptr;
+ int n;
+ int i;
+ char *name, *p;
+ char *canonname = NULL, *idn = NULL;
+ unsigned char *buf = NULL;
+ size_t namelen;
+ size_t buflen;
+ int dots, fqdn = niquery_options[index].data;
+ MD5_CTX ctxt;
+ __u8 digest[MD5_DIGEST_LENGTH];
+#ifdef USE_IDN
+ int rc;
+#endif
+
+ if (niquery_set_subject_type(NI_SUBJ_NAME) < 0)
+ return -1;
+
+#ifdef USE_IDN
+ name = stringprep_locale_to_utf8(arg);
+ if (!name) {
+ fprintf(stderr, "ping6: IDN support failed.\n");
+ exit(2);
+ }
+#else
+ name = strdup(arg);
+ if (!name)
+ goto oomexit;
+#endif
+
+ p = strchr(name, SCOPE_DELIMITER);
+ if (p) {
+ *p = '\0';
+ if (strlen(p + 1) >= IFNAMSIZ) {
+ fprintf(stderr, "ping6: too long scope name.\n");
+ exit(1);
+ }
+ }
+
+#ifdef USE_IDN
+ rc = idna_to_ascii_8z(name, &idn, 0);
+ if (rc) {
+ fprintf(stderr, "ping6: IDN encoding error: %s\n",
+ idna_strerror(rc));
+ exit(2);
+ }
+#else
+ idn = strdup(name);
+ if (!idn)
+ goto oomexit;
+#endif
+
+ namelen = strlen(idn);
+ canonname = malloc(namelen + 1);
+ if (!canonname)
+ goto oomexit;
+
+ dots = 0;
+ for (i = 0; i < namelen + 1; i++) {
+ canonname[i] = isupper(idn[i]) ? tolower(idn[i]) : idn[i];
+ if (idn[i] == '.')
+ dots++;
+ }
+
+ if (fqdn == 0) {
+ /* guess if hostname is FQDN */
+ fqdn = dots ? 1 : -1;
+ }
+
+ buflen = namelen + 3 + 1; /* dn_comp() requrires strlen() + 3,
+ plus non-fqdn indicator. */
+ buf = malloc(buflen);
+ if (!buf) {
+ fprintf(stderr, "ping6: out of memory.\n");
+ goto errexit;
+ }
+
+ dpp = dnptrs;
+ lastdnptr = &dnptrs[ARRAY_SIZE(dnptrs)];
+
+ *dpp++ = (unsigned char *)buf;
+ *dpp++ = NULL;
+
+ n = dn_comp(canonname, (unsigned char *)buf, buflen, dnptrs, lastdnptr);
+ if (n < 0) {
+ fprintf(stderr, "ping6: Inappropriate subject name: %s\n", canonname);
+ goto errexit;
+ } else if (n >= buflen) {
+ fprintf(stderr, "ping6: dn_comp() returned too long result.\n");
+ goto errexit;
+ }
+
+ MD5_Init(&ctxt);
+ MD5_Update(&ctxt, buf, buf[0]);
+ MD5_Final(digest, &ctxt);
+
+ sprintf(nigroup_buf, "ff02::2:%02x%02x:%02x%02x%s%s",
+ digest[0], digest[1], digest[2], digest[3],
+ p ? "%" : "",
+ p ? p + 1 : "");
+
+ if (fqdn < 0)
+ buf[n] = 0;
+
+ free(ni_subject);
+
+ ni_group = nigroup_buf;
+ ni_subject = buf;
+ ni_subject_len = n + (fqdn < 0);
+ ni_group = nigroup_buf;
+
+ free(canonname);
+ free(idn);
+ free(name);
+
+ return 0;
+oomexit:
+ fprintf(stderr, "ping6: out of memory.\n");
+errexit:
+ free(buf);
+ free(canonname);
+ free(idn);
+ free(name);
+ exit(1);
+}
+
+int niquery_option_help_handler(int index, const char *arg)
+{
+ fprintf(stderr, "ping6 -N suboptions\n"
+ "\tHelp:\n"
+ "\t\thelp\n"
+ "\tQuery:\n"
+ "\t\tname,\n"
+ "\t\tipv6,ipv6-all,ipv6-compatible,ipv6-linklocal,ipv6-sitelocal,ipv6-global,\n"
+ "\t\tipv4,ipv4-all,\n"
+ "\tSubject:\n"
+ "\t\tsubject-ipv6=addr,subject-ipv4=addr,subject-name=name,subject-fqdn=name,\n"
+ );
+ exit(2);
+}
+
+int niquery_option_handler(const char *opt_arg)
+{
+ struct niquery_option *p;
+ int i;
+ int ret = -1;
+ for (i = 0, p = niquery_options; p->name; i++, p++) {
+ if (strncmp(p->name, opt_arg, p->namelen))
+ continue;
+ if (!p->has_arg) {
+ if (opt_arg[p->namelen] == '\0') {
+ ret = p->handler(i, NULL);
+ if (ret >= 0)
+ break;
+ }
+ } else {
+ if (opt_arg[p->namelen] == '=') {
+ ret = p->handler(i, &opt_arg[p->namelen] + 1);
+ if (ret >= 0)
+ break;
+ }
+ }
+ }
+ if (!p->name)
+ ret = niquery_option_help_handler(0, NULL);
+ return ret;
+}
+
+static int hextoui(const char *str)
+{
+ unsigned long val;
+ char *ep;
+
+ errno = 0;
+ val = strtoul(str, &ep, 16);
+ if (*ep) {
+ if (!errno)
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (val > UINT_MAX) {
+ errno = ERANGE;
+ return UINT_MAX;
+ }
+
+ return val;
+}
+
+int main(int argc, char *argv[])
+{
+ int ch, hold, packlen;
+ u_char *packet;
+ char *target;
+ struct addrinfo hints, *ai;
+ int gai;
+ struct sockaddr_in6 firsthop;
+ int socket_errno;
+ struct icmp6_filter filter;
+ int err;
+#ifdef __linux__
+ int csum_offset, sz_opt;
+#endif
+ static uint32_t scope_id = 0;
+
+ limit_capabilities();
+
+#ifdef USE_IDN
+ setlocale(LC_ALL, "");
+#endif
+
+ enable_capability_raw();
+
+ icmp_sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
+ socket_errno = errno;
+
+ disable_capability_raw();
+
+ source.sin6_family = AF_INET6;
+ memset(&firsthop, 0, sizeof(firsthop));
+ firsthop.sin6_family = AF_INET6;
+
+ preload = 1;
+ while ((ch = getopt(argc, argv, COMMON_OPTSTR "F:N:")) != EOF) {
+ switch(ch) {
+ case 'F':
+ flowlabel = hextoui(optarg);
+ if (errno || (flowlabel & ~IPV6_FLOWINFO_FLOWLABEL)) {
+ fprintf(stderr, "ping: Invalid flowinfo %s\n", optarg);
+ exit(2);
+ }
+ options |= F_FLOWINFO;
+ break;
+ case 'Q':
+ tclass = hextoui(optarg);
+ if (errno || (tclass & ~0xff)) {
+ fprintf(stderr, "ping: Invalid tclass %s\n", optarg);
+ exit(2);
+ }
+ options |= F_TCLASS;
+ break;
+ case 'I':
+ if (strchr(optarg, ':')) {
+ char *p, *addr = strdup(optarg);
+
+ if (!addr) {
+ fprintf(stderr, "ping: out of memory\n");
+ exit(2);
+ }
+
+ p = strchr(addr, SCOPE_DELIMITER);
+ if (p) {
+ *p = '\0';
+ device = optarg + (p - addr) + 1;
+ }
+
+ if (inet_pton(AF_INET6, addr, (char*)&source.sin6_addr) <= 0) {
+ fprintf(stderr, "ping: invalid source address %s\n", optarg);
+ exit(2);
+ }
+
+ options |= F_STRICTSOURCE;
+
+ free(addr);
+ } else {
+ device = optarg;
+ }
+ break;
+ case 'M':
+ if (strcmp(optarg, "do") == 0)
+ pmtudisc = IPV6_PMTUDISC_DO;
+ else if (strcmp(optarg, "dont") == 0)
+ pmtudisc = IPV6_PMTUDISC_DONT;
+ else if (strcmp(optarg, "want") == 0)
+ pmtudisc = IPV6_PMTUDISC_WANT;
+ else {
+ fprintf(stderr, "ping: wrong value for -M: do, dont, want are valid ones.\n");
+ exit(2);
+ }
+ break;
+ case 'V':
+ printf("ping6 utility, iputils-%s\n", SNAPSHOT);
+ exit(0);
+ case 'N':
+ if (niquery_option_handler(optarg) < 0) {
+ usage();
+ break;
+ }
+ break;
+ COMMON_OPTIONS
+ common_options(ch);
+ break;
+ default:
+ usage();
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+#ifdef ENABLE_PING6_RTHDR
+ while (argc > 1) {
+ struct in6_addr *addr;
+
+ if (srcrt == NULL) {
+ int space;
+
+ fprintf(stderr, "ping6: Warning: "
+ "Source routing is deprecated by RFC5095.\n");
+
+#ifdef ENABLE_PING6_RTHDR_RFC3542
+ space = inet6_rth_space(IPV6_RTHDR_TYPE_0, argc - 1);
+#else
+ space = inet6_srcrt_space(IPV6_SRCRT_TYPE_0, argc - 1);
+#endif
+ if (space == 0) {
+ fprintf(stderr, "srcrt_space failed\n");
+ exit(2);
+ }
+#ifdef ENABLE_PING6_RTHDR_RFC3542
+ if (cmsglen + CMSG_SPACE(space) > sizeof(cmsgbuf)) {
+ fprintf(stderr, "no room for options\n");
+ exit(2);
+ }
+#else
+ if (space + cmsglen > sizeof(cmsgbuf)) {
+ fprintf(stderr, "no room for options\n");
+ exit(2);
+ }
+#endif
+ srcrt = (struct cmsghdr*)(cmsgbuf+cmsglen);
+#ifdef ENABLE_PING6_RTHDR_RFC3542
+ memset(srcrt, 0, CMSG_SPACE(0));
+ srcrt->cmsg_len = CMSG_LEN(space);
+ srcrt->cmsg_level = IPPROTO_IPV6;
+ srcrt->cmsg_type = IPV6_RTHDR;
+ inet6_rth_init(CMSG_DATA(srcrt), space, IPV6_RTHDR_TYPE_0, argc - 1);
+ cmsglen += CMSG_SPACE(space);
+#else
+ cmsglen += CMSG_ALIGN(space);
+ inet6_srcrt_init(srcrt, IPV6_SRCRT_TYPE_0);
+#endif
+ }
+
+ target = *argv;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_INET6;
+#ifdef USE_IDN
+ hints.ai_flags = AI_IDN;
+#endif
+ gai = getaddrinfo(target, NULL, &hints, &ai);
+ if (gai) {
+ fprintf(stderr, "unknown host\n");
+ exit(2);
+ }
+ addr = &((struct sockaddr_in6 *)(ai->ai_addr))->sin6_addr;
+#ifdef ENABLE_PING6_RTHDR_RFC3542
+ inet6_rth_add(CMSG_DATA(srcrt), addr);
+#else
+ inet6_srcrt_add(srcrt, addr);
+#endif
+ if (IN6_IS_ADDR_UNSPECIFIED(&firsthop.sin6_addr)) {
+ memcpy(&firsthop.sin6_addr, addr, 16);
+#ifdef HAVE_SIN6_SCOPEID
+ firsthop.sin6_scope_id = ((struct sockaddr_in6 *)(ai->ai_addr))->sin6_scope_id;
+ /* Verify scope_id is the same as previous nodes */
+ if (firsthop.sin6_scope_id && scope_id && firsthop.sin6_scope_id != scope_id) {
+ fprintf(stderr, "scope discrepancy among the nodes\n");
+ exit(2);
+ } else if (!scope_id) {
+ scope_id = firsthop.sin6_scope_id;
+ }
+#endif
+ }
+ freeaddrinfo(ai);
+
+ argv++;
+ argc--;
+ }
+#endif
+
+ if (niquery_is_enabled()) {
+ niquery_init_nonce();
+
+ if (!niquery_is_subject_valid()) {
+ ni_subject = &whereto.sin6_addr;
+ ni_subject_len = sizeof(whereto.sin6_addr);
+ ni_subject_type = NI_SUBJ_IPV6;
+ }
+ }
+
+ if (argc > 1) {
+#ifndef ENABLE_PING6_RTHDR
+ fprintf(stderr, "ping6: Source routing is deprecated by RFC5095.\n");
+#endif
+ usage();
+ } else if (argc == 1) {
+ target = *argv;
+ } else {
+ if (ni_query < 0 && ni_subject_type != NI_SUBJ_NAME)
+ usage();
+ target = ni_group;
+ }
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_INET6;
+#ifdef USE_IDN
+ hints.ai_flags = AI_IDN;
+#endif
+ gai = getaddrinfo(target, NULL, &hints, &ai);
+ if (gai) {
+ fprintf(stderr, "unknown host\n");
+ exit(2);
+ }
+
+ memcpy(&whereto, ai->ai_addr, sizeof(whereto));
+ whereto.sin6_port = htons(IPPROTO_ICMPV6);
+
+ if (memchr(target, ':', strlen(target)))
+ options |= F_NUMERIC;
+
+ freeaddrinfo(ai);
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&firsthop.sin6_addr)) {
+ memcpy(&firsthop.sin6_addr, &whereto.sin6_addr, 16);
+#ifdef HAVE_SIN6_SCOPEID
+ firsthop.sin6_scope_id = whereto.sin6_scope_id;
+ /* Verify scope_id is the same as intermediate nodes */
+ if (firsthop.sin6_scope_id && scope_id && firsthop.sin6_scope_id != scope_id) {
+ fprintf(stderr, "scope discrepancy among the nodes\n");
+ exit(2);
+ } else if (!scope_id) {
+ scope_id = firsthop.sin6_scope_id;
+ }
+#endif
+ }
+
+ hostname = target;
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&source.sin6_addr)) {
+ socklen_t alen;
+ int probe_fd = socket(AF_INET6, SOCK_DGRAM, 0);
+
+ if (probe_fd < 0) {
+ perror("socket");
+ exit(2);
+ }
+ if (device) {
+#if defined(IPV6_RECVPKTINFO) || defined(HAVE_SIN6_SCOPEID)
+ unsigned int iface = if_name2index(device);
+#endif
+#ifdef IPV6_RECVPKTINFO
+ struct in6_pktinfo ipi;
+
+ memset(&ipi, 0, sizeof(ipi));
+ ipi.ipi6_ifindex = iface;
+#endif
+
+#ifdef HAVE_SIN6_SCOPEID
+ if (IN6_IS_ADDR_LINKLOCAL(&firsthop.sin6_addr) ||
+ IN6_IS_ADDR_MC_LINKLOCAL(&firsthop.sin6_addr))
+ firsthop.sin6_scope_id = iface;
+#endif
+ enable_capability_raw();
+ if (
+#ifdef IPV6_RECVPKTINFO
+ setsockopt(probe_fd, IPPROTO_IPV6, IPV6_PKTINFO, &ipi, sizeof(ipi)) == -1 &&
+#endif
+ setsockopt(probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1) == -1) {
+ perror("setsockopt(SO_BINDTODEVICE)");
+ exit(2);
+ }
+ disable_capability_raw();
+ }
+ firsthop.sin6_port = htons(1025);
+ if (connect(probe_fd, (struct sockaddr*)&firsthop, sizeof(firsthop)) == -1) {
+ perror("connect");
+ exit(2);
+ }
+ alen = sizeof(source);
+ if (getsockname(probe_fd, (struct sockaddr*)&source, &alen) == -1) {
+ perror("getsockname");
+ exit(2);
+ }
+ source.sin6_port = 0;
+ close(probe_fd);
+
+#ifndef WITHOUT_IFADDRS
+ if (device) {
+ struct ifaddrs *ifa0, *ifa;
+
+ if (getifaddrs(&ifa0)) {
+ perror("getifaddrs");
+ exit(2);
+ }
+
+ for (ifa = ifa0; ifa; ifa = ifa->ifa_next) {
+ if (!ifa->ifa_addr || ifa->ifa_addr->sa_family != AF_INET6)
+ continue;
+ if (!strncmp(ifa->ifa_name, device, sizeof(device) - 1) &&
+ IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr,
+ &source.sin6_addr))
+ break;
+ }
+ if (!ifa)
+ fprintf(stderr, "ping6: Warning: source address might be selected on device other than %s.\n", device);
+
+ freeifaddrs(ifa0);
+ }
+#endif
+ }
+#ifdef HAVE_SIN6_SCOPEID
+ else if (device && (IN6_IS_ADDR_LINKLOCAL(&source.sin6_addr) ||
+ IN6_IS_ADDR_MC_LINKLOCAL(&source.sin6_addr)))
+ source.sin6_scope_id = if_name2index(device);
+#endif
+
+ if (icmp_sock < 0) {
+ errno = socket_errno;
+ perror("ping: icmp open socket");
+ exit(2);
+ }
+
+ if (device) {
+ struct cmsghdr *cmsg;
+ struct in6_pktinfo *ipi;
+
+ cmsg = (struct cmsghdr*)(cmsgbuf+cmsglen);
+ cmsglen += CMSG_SPACE(sizeof(*ipi));
+ cmsg->cmsg_len = CMSG_LEN(sizeof(*ipi));
+ cmsg->cmsg_level = SOL_IPV6;
+ cmsg->cmsg_type = IPV6_PKTINFO;
+
+ ipi = (struct in6_pktinfo*)CMSG_DATA(cmsg);
+ memset(ipi, 0, sizeof(*ipi));
+ ipi->ipi6_ifindex = if_name2index(device);
+ }
+
+ if ((whereto.sin6_addr.s6_addr16[0]&htons(0xff00)) == htons (0xff00)) {
+ if (uid) {
+ if (interval < 1000) {
+ fprintf(stderr, "ping: multicast ping with too short interval.\n");
+ exit(2);
+ }
+ if (pmtudisc >= 0 && pmtudisc != IPV6_PMTUDISC_DO) {
+ fprintf(stderr, "ping: multicast ping does not fragment.\n");
+ exit(2);
+ }
+ }
+ if (pmtudisc < 0)
+ pmtudisc = IPV6_PMTUDISC_DO;
+ }
+
+ if (pmtudisc >= 0) {
+ if (setsockopt(icmp_sock, SOL_IPV6, IPV6_MTU_DISCOVER, &pmtudisc, sizeof(pmtudisc)) == -1) {
+ perror("ping: IPV6_MTU_DISCOVER");
+ exit(2);
+ }
+ }
+
+ if ((options&F_STRICTSOURCE) &&
+ bind(icmp_sock, (struct sockaddr*)&source, sizeof(source)) == -1) {
+ perror("ping: bind icmp socket");
+ exit(2);
+ }
+
+ if (datalen >= sizeof(struct timeval) && (ni_query < 0)) {
+ /* can we time transfer */
+ timing = 1;
+ }
+ packlen = datalen + 8 + 4096 + 40 + 8; /* 4096 for rthdr */
+ if (!(packet = (u_char *)malloc((u_int)packlen))) {
+ fprintf(stderr, "ping: out of memory.\n");
+ exit(2);
+ }
+
+ working_recverr = 1;
+ hold = 1;
+ if (setsockopt(icmp_sock, SOL_IPV6, IPV6_RECVERR, (char *)&hold, sizeof(hold))) {
+ fprintf(stderr, "WARNING: your kernel is veeery old. No problems.\n");
+ working_recverr = 0;
+ }
+
+ /* Estimate memory eaten by single packet. It is rough estimate.
+ * Actually, for small datalen's it depends on kernel side a lot. */
+ hold = datalen+8;
+ hold += ((hold+511)/512)*(40+16+64+160);
+ sock_setbufs(icmp_sock, hold);
+
+#ifdef __linux__
+ csum_offset = 2;
+ sz_opt = sizeof(int);
+
+ err = setsockopt(icmp_sock, SOL_RAW, IPV6_CHECKSUM, &csum_offset, sz_opt);
+ if (err < 0) {
+ /* checksum should be enabled by default and setting this
+ * option might fail anyway.
+ */
+ fprintf(stderr, "setsockopt(RAW_CHECKSUM) failed - try to continue.");
+ }
+#endif
+
+ /*
+ * select icmp echo reply as icmp type to receive
+ */
+
+ ICMP6_FILTER_SETBLOCKALL(&filter);
+
+ if (!working_recverr) {
+ ICMP6_FILTER_SETPASS(ICMP6_DST_UNREACH, &filter);
+ ICMP6_FILTER_SETPASS(ICMP6_PACKET_TOO_BIG, &filter);
+ ICMP6_FILTER_SETPASS(ICMP6_TIME_EXCEEDED, &filter);
+ ICMP6_FILTER_SETPASS(ICMP6_PARAM_PROB, &filter);
+ }
+
+ if (niquery_is_enabled())
+ ICMP6_FILTER_SETPASS(ICMPV6_NI_REPLY, &filter);
+ else
+ ICMP6_FILTER_SETPASS(ICMP6_ECHO_REPLY, &filter);
+
+ err = setsockopt(icmp_sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
+ sizeof(struct icmp6_filter));
+
+ if (err < 0) {
+ perror("setsockopt(ICMP6_FILTER)");
+ exit(2);
+ }
+
+ if (options & F_NOLOOP) {
+ int loop = 0;
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
+ &loop, sizeof(loop)) == -1) {
+ perror ("can't disable multicast loopback");
+ exit(2);
+ }
+ }
+ if (options & F_TTL) {
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
+ &ttl, sizeof(ttl)) == -1) {
+ perror ("can't set multicast hop limit");
+ exit(2);
+ }
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS,
+ &ttl, sizeof(ttl)) == -1) {
+ perror ("can't set unicast hop limit");
+ exit(2);
+ }
+ }
+
+ if (1) {
+ int on = 1;
+ if (
+#ifdef IPV6_RECVHOPLIMIT
+ setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT,
+ &on, sizeof(on)) == -1 &&
+ setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_2292HOPLIMIT,
+ &on, sizeof(on)) == -1
+#else
+ setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_HOPLIMIT,
+ &on, sizeof(on)) == -1
+#endif
+ ){
+ perror ("can't receive hop limit");
+ exit(2);
+ }
+ }
+
+ if (options & F_TCLASS) {
+#ifdef IPV6_TCLASS
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_TCLASS,
+ &tclass, sizeof(tclass)) == -1) {
+ perror ("setsockopt(IPV6_TCLASS)");
+ exit(2);
+ }
+#else
+ fprintf(stderr, "Traffic class is not supported.\n");
+#endif
+ }
+
+ if (options&F_FLOWINFO) {
+#ifdef IPV6_FLOWINFO_SEND
+ int on = 1;
+#endif
+#ifdef IPV6_FLOWLABEL_MGR
+ char freq_buf[CMSG_ALIGN(sizeof(struct in6_flowlabel_req)) + cmsglen];
+ struct in6_flowlabel_req *freq = (struct in6_flowlabel_req *)freq_buf;
+ int freq_len = sizeof(*freq);
+#ifdef ENABLE_PING6_RTHDR
+ if (srcrt)
+ freq_len = CMSG_ALIGN(sizeof(*freq)) + srcrt->cmsg_len;
+#endif
+ memset(freq, 0, sizeof(*freq));
+ freq->flr_label = htonl(flowlabel & IPV6_FLOWINFO_FLOWLABEL);
+ freq->flr_action = IPV6_FL_A_GET;
+ freq->flr_flags = IPV6_FL_F_CREATE;
+ freq->flr_share = IPV6_FL_S_EXCL;
+ memcpy(&freq->flr_dst, &whereto.sin6_addr, 16);
+#ifdef ENABLE_PING6_RTHDR
+ if (srcrt)
+ memcpy(freq_buf + CMSG_ALIGN(sizeof(*freq)), srcrt, srcrt->cmsg_len);
+#endif
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_FLOWLABEL_MGR,
+ freq, freq_len) == -1) {
+ perror ("can't set flowlabel");
+ exit(2);
+ }
+ flowlabel = freq->flr_label;
+#ifdef ENABLE_PING6_RTHDR
+ if (srcrt) {
+ cmsglen = (char*)srcrt - (char*)cmsgbuf;
+ srcrt = NULL;
+ }
+#endif
+#else
+ fprintf(stderr, "Flow labels are not supported.\n");
+ exit(2);
+#endif
+
+#ifdef IPV6_FLOWINFO_SEND
+ whereto.sin6_flowinfo = flowlabel;
+ if (setsockopt(icmp_sock, IPPROTO_IPV6, IPV6_FLOWINFO_SEND,
+ &on, sizeof(on)) == -1) {
+ perror ("can't send flowinfo");
+ exit(2);
+ }
+#else
+ fprintf(stderr, "Flowinfo is not supported.\n");
+ exit(2);
+#endif
+ }
+
+ printf("PING %s(%s) ", hostname, pr_addr(&whereto.sin6_addr));
+ if (flowlabel)
+ printf(", flow 0x%05x, ", (unsigned)ntohl(flowlabel));
+ if (device || (options&F_STRICTSOURCE)) {
+ printf("from %s %s: ",
+ pr_addr_n(&source.sin6_addr), device ? : "");
+ }
+ printf("%d data bytes\n", datalen);
+
+ setup(icmp_sock);
+
+ drop_capabilities();
+
+ main_loop(icmp_sock, packet, packlen);
+}
+
+int receive_error_msg()
+{
+ int res;
+ char cbuf[512];
+ struct iovec iov;
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+ struct sock_extended_err *e;
+ struct icmp6_hdr icmph;
+ struct sockaddr_in6 target;
+ int net_errors = 0;
+ int local_errors = 0;
+ int saved_errno = errno;
+
+ iov.iov_base = &icmph;
+ iov.iov_len = sizeof(icmph);
+ msg.msg_name = (void*)⌖
+ msg.msg_namelen = sizeof(target);
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_flags = 0;
+ msg.msg_control = cbuf;
+ msg.msg_controllen = sizeof(cbuf);
+
+ res = recvmsg(icmp_sock, &msg, MSG_ERRQUEUE|MSG_DONTWAIT);
+ if (res < 0)
+ goto out;
+
+ e = NULL;
+ for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
+ if (cmsg->cmsg_level == SOL_IPV6) {
+ if (cmsg->cmsg_type == IPV6_RECVERR)
+ e = (struct sock_extended_err *)CMSG_DATA(cmsg);
+ }
+ }
+ if (e == NULL)
+ abort();
+
+ if (e->ee_origin == SO_EE_ORIGIN_LOCAL) {
+ local_errors++;
+ if (options & F_QUIET)
+ goto out;
+ if (options & F_FLOOD)
+ write_stdout("E", 1);
+ else if (e->ee_errno != EMSGSIZE)
+ fprintf(stderr, "ping: local error: %s\n", strerror(e->ee_errno));
+ else
+ fprintf(stderr, "ping: local error: Message too long, mtu=%u\n", e->ee_info);
+ nerrors++;
+ } else if (e->ee_origin == SO_EE_ORIGIN_ICMP6) {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)(e+1);
+
+ if (res < sizeof(icmph) ||
+ memcmp(&target.sin6_addr, &whereto.sin6_addr, 16) ||
+ icmph.icmp6_type != ICMP6_ECHO_REQUEST ||
+ icmph.icmp6_id != ident) {
+ /* Not our error, not an error at all. Clear. */
+ saved_errno = 0;
+ goto out;
+ }
+
+ net_errors++;
+ nerrors++;
+ if (options & F_QUIET)
+ goto out;
+ if (options & F_FLOOD) {
+ write_stdout("\bE", 2);
+ } else {
+ print_timestamp();
+ printf("From %s icmp_seq=%u ", pr_addr(&sin6->sin6_addr), ntohs(icmph.icmp6_seq));
+ pr_icmph(e->ee_type, e->ee_code, e->ee_info);
+ putchar('\n');
+ fflush(stdout);
+ }
+ }
+
+out:
+ errno = saved_errno;
+ return net_errors ? : -local_errors;
+}
+
+/*
+ * 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.
+ */
+int build_echo(__u8 *_icmph)
+{
+ struct icmp6_hdr *icmph;
+ int cc;
+
+ icmph = (struct icmp6_hdr *)_icmph;
+ icmph->icmp6_type = ICMP6_ECHO_REQUEST;
+ icmph->icmp6_code = 0;
+ icmph->icmp6_cksum = 0;
+ icmph->icmp6_seq = htons(ntransmitted+1);
+ icmph->icmp6_id = ident;
+
+ if (timing)
+ gettimeofday((struct timeval *)&outpack[8],
+ (struct timezone *)NULL);
+
+ cc = datalen + 8; /* skips ICMP portion */
+
+ return cc;
+}
+
+
+int build_niquery(__u8 *_nih)
+{
+ struct ni_hdr *nih;
+ int cc;
+
+ nih = (struct ni_hdr *)_nih;
+ nih->ni_cksum = 0;
+
+ nih->ni_type = ICMPV6_NI_QUERY;
+ cc = sizeof(*nih);
+ datalen = 0;
+
+ niquery_fill_nonce(ntransmitted + 1, nih->ni_nonce);
+ nih->ni_code = ni_subject_type;
+ nih->ni_qtype = htons(ni_query);
+ nih->ni_flags = ni_flag;
+ memcpy(nih + 1, ni_subject, ni_subject_len);
+ cc += ni_subject_len;
+
+ return cc;
+}
+
+int send_probe(void)
+{
+ int len, cc;
+
+ rcvd_clear(ntransmitted + 1);
+
+ if (niquery_is_enabled())
+ len = build_niquery(outpack);
+ else
+ len = build_echo(outpack);
+
+ if (cmsglen == 0) {
+ cc = sendto(icmp_sock, (char *)outpack, len, confirm,
+ (struct sockaddr *) &whereto,
+ sizeof(struct sockaddr_in6));
+ } else {
+ struct msghdr mhdr;
+ struct iovec iov;
+
+ iov.iov_len = len;
+ iov.iov_base = outpack;
+
+ memset(&mhdr, 0, sizeof(mhdr));
+ mhdr.msg_name = &whereto;
+ mhdr.msg_namelen = sizeof(struct sockaddr_in6);
+ mhdr.msg_iov = &iov;
+ mhdr.msg_iovlen = 1;
+ mhdr.msg_control = cmsgbuf;
+ mhdr.msg_controllen = cmsglen;
+
+ cc = sendmsg(icmp_sock, &mhdr, confirm);
+ }
+ confirm = 0;
+
+ return (cc == len ? 0 : cc);
+}
+
+void pr_echo_reply(__u8 *_icmph, int cc)
+{
+ struct icmp6_hdr *icmph = (struct icmp6_hdr *) _icmph;
+ printf(" icmp_seq=%u", ntohs(icmph->icmp6_seq));
+};
+
+static void putchar_safe(char c)
+{
+ if (isprint(c))
+ putchar(c);
+ else
+ printf("\\%03o", c);
+}
+
+void pr_niquery_reply_name(struct ni_hdr *nih, int len)
+{
+ __u8 *h = (__u8 *)(nih + 1);
+ __u8 *p = h + 4;
+ __u8 *end = (__u8 *)nih + len;
+ int continued = 0;
+ char buf[1024];
+ int ret;
+
+ len -= sizeof(struct ni_hdr) + 4;
+
+ if (len < 0) {
+ printf(" parse error (too short)");
+ return;
+ }
+ while (p < end) {
+ int fqdn = 1;
+ int i;
+
+ memset(buf, 0xff, sizeof(buf));
+
+ if (continued)
+ putchar(',');
+
+ ret = dn_expand(h, end, p, buf, sizeof(buf));
+ if (ret < 0) {
+ printf(" parse error (truncated)");
+ break;
+ }
+ if (p + ret < end && *(p + ret) == '\0')
+ fqdn = 0;
+
+ putchar(' ');
+ for (i = 0; i < strlen(buf); i++)
+ putchar_safe(buf[i]);
+ if (fqdn)
+ putchar('.');
+
+ p += ret + !fqdn;
+
+ continued = 1;
+ }
+}
+
+void pr_niquery_reply_addr(struct ni_hdr *nih, int len)
+{
+ __u8 *h = (__u8 *)(nih + 1);
+ __u8 *p = h + 4;
+ __u8 *end = (__u8 *)nih + len;
+ int af;
+ int aflen;
+ int continued = 0;
+ int truncated;
+ char buf[1024];
+
+ switch (ntohs(nih->ni_qtype)) {
+ case NI_QTYPE_IPV4ADDR:
+ af = AF_INET;
+ aflen = sizeof(struct in_addr);
+ truncated = nih->ni_flags & NI_IPV6ADDR_F_TRUNCATE;
+ break;
+ case NI_QTYPE_IPV6ADDR:
+ af = AF_INET6;
+ aflen = sizeof(struct in6_addr);
+ truncated = nih->ni_flags & NI_IPV4ADDR_F_TRUNCATE;
+ break;
+ default:
+ /* should not happen */
+ af = aflen = truncated = 0;
+ }
+ p = h;
+ if (len < 0) {
+ printf(" parse error (too short)");
+ return;
+ }
+
+ while (p < end) {
+ if (continued)
+ putchar(',');
+
+ if (p + sizeof(__u32) + aflen > end) {
+ printf(" parse error (truncated)");
+ break;
+ }
+ if (!inet_ntop(af, p + sizeof(__u32), buf, sizeof(buf)))
+ printf(" unexpeced error in inet_ntop(%s)",
+ strerror(errno));
+ else
+ printf(" %s", buf);
+ p += sizeof(__u32) + aflen;
+
+ continued = 1;
+ }
+ if (truncated)
+ printf(" (truncated)");
+}
+
+void pr_niquery_reply(__u8 *_nih, int len)
+{
+ struct ni_hdr *nih = (struct ni_hdr *)_nih;
+
+ switch (nih->ni_code) {
+ case NI_SUCCESS:
+ switch (ntohs(nih->ni_qtype)) {
+ case NI_QTYPE_NAME:
+ pr_niquery_reply_name(nih, len);
+ break;
+ case NI_QTYPE_IPV4ADDR:
+ case NI_QTYPE_IPV6ADDR:
+ pr_niquery_reply_addr(nih, len);
+ break;
+ default:
+ printf(" unknown qtype(0x%02x)", ntohs(nih->ni_qtype));
+ }
+ break;
+ case NI_REFUSED:
+ printf(" refused");
+ break;
+ case NI_UNKNOWN:
+ printf(" unknown");
+ break;
+ default:
+ printf(" unknown code(%02x)", ntohs(nih->ni_code));
+ }
+ printf("; seq=%u;", ntohsp((__u16*)nih->ni_nonce));
+}
+
+/*
+ * parse_reply --
+ * 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!).
+ */
+int
+parse_reply(struct msghdr *msg, int cc, void *addr, struct timeval *tv)
+{
+ struct sockaddr_in6 *from = addr;
+ __u8 *buf = msg->msg_iov->iov_base;
+ struct cmsghdr *c;
+ struct icmp6_hdr *icmph;
+ int hops = -1;
+
+ for (c = CMSG_FIRSTHDR(msg); c; c = CMSG_NXTHDR(msg, c)) {
+ if (c->cmsg_level != SOL_IPV6)
+ continue;
+ switch(c->cmsg_type) {
+ case IPV6_HOPLIMIT:
+#ifdef IPV6_2292HOPLIMIT
+ case IPV6_2292HOPLIMIT:
+#endif
+ if (c->cmsg_len < CMSG_LEN(sizeof(int)))
+ continue;
+ memcpy(&hops, CMSG_DATA(c), sizeof(hops));
+ }
+ }
+
+
+ /* Now the ICMP part */
+
+ icmph = (struct icmp6_hdr *) buf;
+ if (cc < 8) {
+ if (options & F_VERBOSE)
+ fprintf(stderr, "ping: packet too short (%d bytes)\n", cc);
+ return 1;
+ }
+
+ if (icmph->icmp6_type == ICMP6_ECHO_REPLY) {
+ if (icmph->icmp6_id != ident)
+ return 1;
+ if (gather_statistics((__u8*)icmph, sizeof(*icmph), cc,
+ ntohs(icmph->icmp6_seq),
+ hops, 0, tv, pr_addr(&from->sin6_addr),
+ pr_echo_reply))
+ return 0;
+ } else if (icmph->icmp6_type == ICMPV6_NI_REPLY) {
+ struct ni_hdr *nih = (struct ni_hdr *)icmph;
+ int seq = niquery_check_nonce(nih->ni_nonce);
+ if (seq < 0)
+ return 1;
+ if (gather_statistics((__u8*)icmph, sizeof(*icmph), cc,
+ seq,
+ hops, 0, tv, pr_addr(&from->sin6_addr),
+ pr_niquery_reply))
+ return 0;
+ } else {
+ int nexthdr;
+ struct ip6_hdr *iph1 = (struct ip6_hdr*)(icmph+1);
+ struct icmp6_hdr *icmph1 = (struct icmp6_hdr *)(iph1+1);
+
+ /* We must not ever fall here. All the messages but
+ * echo reply are blocked by filter and error are
+ * received with IPV6_RECVERR. Ugly code is preserved
+ * however, just to remember what crap we avoided
+ * using RECVRERR. :-)
+ */
+
+ if (cc < 8+sizeof(struct ip6_hdr)+8)
+ return 1;
+
+ if (memcmp(&iph1->ip6_dst, &whereto.sin6_addr, 16))
+ return 1;
+
+ nexthdr = iph1->ip6_nxt;
+
+ if (nexthdr == 44) {
+ nexthdr = *(__u8*)icmph1;
+ icmph1++;
+ }
+ if (nexthdr == IPPROTO_ICMPV6) {
+ if (icmph1->icmp6_type != ICMP6_ECHO_REQUEST ||
+ icmph1->icmp6_id != ident)
+ return 1;
+ acknowledge(ntohs(icmph1->icmp6_seq));
+ if (working_recverr)
+ return 0;
+ nerrors++;
+ if (options & F_FLOOD) {
+ write_stdout("\bE", 2);
+ return 0;
+ }
+ print_timestamp();
+ printf("From %s: icmp_seq=%u ", pr_addr(&from->sin6_addr), ntohs(icmph1->icmp6_seq));
+ } else {
+ /* We've got something other than an ECHOREPLY */
+ if (!(options & F_VERBOSE) || uid)
+ return 1;
+ print_timestamp();
+ printf("From %s: ", pr_addr(&from->sin6_addr));
+ }
+ pr_icmph(icmph->icmp6_type, icmph->icmp6_code, ntohl(icmph->icmp6_mtu));
+ }
+
+ if (!(options & F_FLOOD)) {
+ if (options & F_AUDIBLE)
+ putchar('\a');
+ putchar('\n');
+ fflush(stdout);
+ } else {
+ putchar('\a');
+ fflush(stdout);
+ }
+ return 0;
+}
+
+
+int pr_icmph(__u8 type, __u8 code, __u32 info)
+{
+ switch(type) {
+ case ICMP6_DST_UNREACH:
+ printf("Destination unreachable: ");
+ switch (code) {
+ case ICMP6_DST_UNREACH_NOROUTE:
+ printf("No route");
+ break;
+ case ICMP6_DST_UNREACH_ADMIN:
+ printf("Administratively prohibited");
+ break;
+ case ICMP6_DST_UNREACH_BEYONDSCOPE:
+ printf("Beyond scope of source address");
+ break;
+ case ICMP6_DST_UNREACH_ADDR:
+ printf("Address unreachable");
+ break;
+ case ICMP6_DST_UNREACH_NOPORT:
+ printf("Port unreachable");
+ break;
+ default:
+ printf("Unknown code %d", code);
+ break;
+ }
+ break;
+ case ICMP6_PACKET_TOO_BIG:
+ printf("Packet too big: mtu=%u", info);
+ if (code)
+ printf(", code=%d", code);
+ break;
+ case ICMP6_TIME_EXCEEDED:
+ printf("Time exceeded: ");
+ if (code == ICMP6_TIME_EXCEED_TRANSIT)
+ printf("Hop limit");
+ else if (code == ICMP6_TIME_EXCEED_REASSEMBLY)
+ printf("Defragmentation failure");
+ else
+ printf("code %d", code);
+ break;
+ case ICMP6_PARAM_PROB:
+ printf("Parameter problem: ");
+ if (code == ICMP6_PARAMPROB_HEADER)
+ printf("Wrong header field ");
+ else if (code == ICMP6_PARAMPROB_NEXTHEADER)
+ printf("Unknown header ");
+ else if (code == ICMP6_PARAMPROB_OPTION)
+ printf("Unknown option ");
+ else
+ printf("code %d ", code);
+ printf ("at %u", info);
+ break;
+ case ICMP6_ECHO_REQUEST:
+ printf("Echo request");
+ break;
+ case ICMP6_ECHO_REPLY:
+ printf("Echo reply");
+ break;
+ case MLD_LISTENER_QUERY:
+ printf("MLD Query");
+ break;
+ case MLD_LISTENER_REPORT:
+ printf("MLD Report");
+ break;
+ case MLD_LISTENER_REDUCTION:
+ printf("MLD Reduction");
+ break;
+ default:
+ printf("unknown icmp type: %u", type);
+
+ }
+ return 0;
+}
+
+#include <linux/filter.h>
+
+void install_filter(void)
+{
+ static int once;
+ static struct sock_filter insns[] = {
+ BPF_STMT(BPF_LD|BPF_H|BPF_ABS, 4), /* Load icmp echo ident */
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0xAAAA, 0, 1), /* Ours? */
+ BPF_STMT(BPF_RET|BPF_K, ~0U), /* Yes, it passes. */
+ BPF_STMT(BPF_LD|BPF_B|BPF_ABS, 0), /* Load icmp type */
+ BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, ICMP6_ECHO_REPLY, 1, 0), /* Echo? */
+ BPF_STMT(BPF_RET|BPF_K, ~0U), /* No. It passes. This must not happen. */
+ BPF_STMT(BPF_RET|BPF_K, 0), /* Echo with wrong ident. Reject. */
+ };
+ static struct sock_fprog filter = {
+ sizeof insns / sizeof(insns[0]),
+ insns
+ };
+
+ if (once)
+ return;
+ once = 1;
+
+ /* Patch bpflet for current identifier. */
+ insns[1] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, htons(ident), 0, 1);
+
+ if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)))
+ perror("WARNING: failed to install socket filter\n");
+}
+
+
+/*
+ * pr_addr --
+ * Return an ascii host address as a dotted quad and optionally with
+ * a hostname.
+ */
+char * pr_addr(struct in6_addr *addr)
+{
+ struct hostent *hp = NULL;
+ static char *s;
+
+#ifdef USE_IDN
+ free(s);
+#endif
+
+ in_pr_addr = !setjmp(pr_addr_jmp);
+
+ if (!(exiting || options&F_NUMERIC))
+ hp = gethostbyaddr((__u8*)addr, sizeof(struct in6_addr), AF_INET6);
+
+ in_pr_addr = 0;
+
+ if (!hp
+#ifdef USE_IDN
+ || idna_to_unicode_lzlz(hp->h_name, &s, 0) != IDNA_SUCCESS
+#endif
+ )
+ s = NULL;
+
+ return hp ? (s ? s : hp->h_name) : pr_addr_n(addr);
+}
+
+char * pr_addr_n(struct in6_addr *addr)
+{
+ static char str[64];
+ inet_ntop(AF_INET6, addr, str, sizeof(str));
+ return str;
+}
+
+#define USAGE_NEWLINE "\n "
+
+void usage(void)
+{
+ fprintf(stderr,
+ "Usage: ping6"
+ " [-"
+ "aAbBdDfhLnOqrRUvV"
+ "]"
+ " [-c count]"
+ " [-i interval]"
+ " [-I interface]"
+ USAGE_NEWLINE
+ " [-l preload]"
+ " [-m mark]"
+ " [-M pmtudisc_option]"
+ USAGE_NEWLINE
+ " [-N nodeinfo_option]"
+ " [-p pattern]"
+ " [-Q tclass]"
+ " [-s packetsize]"
+ USAGE_NEWLINE
+ " [-S sndbuf]"
+ " [-t ttl]"
+ " [-T timestamp_option]"
+ " [-w deadline]"
+ USAGE_NEWLINE
+ " [-W timeout]"
+#ifdef ENABLE_PING6_RTHDR
+ " [hop1 ...]"
+#endif
+ " destination"
+ "\n"
+ );
+ exit(2);
+}
diff --git a/ping6_niquery.h b/ping6_niquery.h
new file mode 100644
index 0000000..fa6624a
--- /dev/null
+++ b/ping6_niquery.h
@@ -0,0 +1,49 @@
+#include <asm/byteorder.h>
+
+#define NI_NONCE_SIZE 8
+
+/* Node Information Query */
+struct ni_hdr {
+ struct icmp6_hdr ni_u;
+ __u8 ni_nonce[NI_NONCE_SIZE];
+};
+
+#define ni_type ni_u.icmp6_type
+#define ni_code ni_u.icmp6_code
+#define ni_cksum ni_u.icmp6_cksum
+#define ni_qtype ni_u.icmp6_data16[0]
+#define ni_flags ni_u.icmp6_data16[1]
+
+/* Types */
+#ifndef ICMPV6_NI_QUERY
+# define ICMPV6_NI_QUERY 139
+# define ICMPV6_NI_REPLY 140
+#endif
+
+/* Query Codes */
+#define NI_SUBJ_IPV6 0
+#define NI_SUBJ_NAME 1
+#define NI_SUBJ_IPV4 2
+
+/* Reply Codes */
+#define NI_SUCCESS 0
+#define NI_REFUSED 1
+#define NI_UNKNOWN 2
+
+/* Qtypes */
+#define NI_QTYPE_NOOP 0
+#define NI_QTYPE_NAME 2
+#define NI_QTYPE_IPV6ADDR 3
+#define NI_QTYPE_IPV4ADDR 4
+
+/* Flags */
+#define NI_IPV6ADDR_F_TRUNCATE __constant_cpu_to_be16(0x0001)
+#define NI_IPV6ADDR_F_ALL __constant_cpu_to_be16(0x0002)
+#define NI_IPV6ADDR_F_COMPAT __constant_cpu_to_be16(0x0004)
+#define NI_IPV6ADDR_F_LINKLOCAL __constant_cpu_to_be16(0x0008)
+#define NI_IPV6ADDR_F_SITELOCAL __constant_cpu_to_be16(0x0010)
+#define NI_IPV6ADDR_F_GLOBAL __constant_cpu_to_be16(0x0020)
+
+#define NI_IPV4ADDR_F_TRUNCATE NI_IPV6ADDR_F_TRUNCATE
+#define NI_IPV4ADDR_F_ALL NI_IPV6ADDR_F_ALL
+
diff --git a/ping_common.c b/ping_common.c
index e8ae6b8..5d00a69 100644
--- a/ping_common.c
+++ b/ping_common.c
@@ -1,17 +1,18 @@
#include "ping_common.h"
#include <ctype.h>
#include <sched.h>
+#include <math.h>
int options;
+int mark;
int sndbuf;
int ttl;
int rtt;
int rtt_addend;
__u16 acked;
-int mx_dup_ck = MAX_DUP_CHK;
-char rcvd_tbl[MAX_DUP_CHK / 8];
+struct rcvd_table rcvd_tbl;
/* counters */
@@ -29,6 +30,8 @@
volatile int exiting;
volatile int status_snapshot;
int confirm = 0;
+volatile int in_pr_addr = 0; /* pr_addr() is executing */
+jmp_buf pr_addr_jmp;
/* Stupid workarounds for bugs/missing functionality in older linuces.
* confirm_flag fixes refusing service of kernels without MSG_CONFIRM.
@@ -55,10 +58,145 @@
char *hostname;
int uid;
+uid_t euid;
int ident; /* process id to identify our packets */
static int screen_width = INT_MAX;
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+
+#ifdef CAPABILITIES
+static cap_value_t cap_raw = CAP_NET_RAW;
+static cap_value_t cap_admin = CAP_NET_ADMIN;
+#endif
+
+void limit_capabilities(void)
+{
+#ifdef CAPABILITIES
+ cap_t cap_cur_p;
+ cap_t cap_p;
+ cap_flag_value_t cap_ok;
+
+ cap_cur_p = cap_get_proc();
+ if (!cap_cur_p) {
+ perror("ping: cap_get_proc");
+ exit(-1);
+ }
+
+ cap_p = cap_init();
+ if (!cap_p) {
+ perror("ping: cap_init");
+ exit(-1);
+ }
+
+ cap_ok = CAP_CLEAR;
+ cap_get_flag(cap_cur_p, CAP_NET_ADMIN, CAP_PERMITTED, &cap_ok);
+
+ if (cap_ok != CAP_CLEAR)
+ cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_admin, CAP_SET);
+
+ cap_ok = CAP_CLEAR;
+ cap_get_flag(cap_cur_p, CAP_NET_RAW, CAP_PERMITTED, &cap_ok);
+
+ if (cap_ok != CAP_CLEAR)
+ cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_raw, CAP_SET);
+
+ if (cap_set_proc(cap_p) < 0) {
+ perror("ping: cap_set_proc");
+ exit(-1);
+ }
+
+ if (prctl(PR_SET_KEEPCAPS, 1) < 0) {
+ perror("ping: prctl");
+ exit(-1);
+ }
+
+ if (setuid(getuid()) < 0) {
+ perror("setuid");
+ exit(-1);
+ }
+
+ if (prctl(PR_SET_KEEPCAPS, 0) < 0) {
+ perror("ping: prctl");
+ exit(-1);
+ }
+
+ cap_free(cap_p);
+ cap_free(cap_cur_p);
+#endif
+ uid = getuid();
+ euid = geteuid();
+#ifndef CAPABILITIES
+ if (seteuid(uid)) {
+ perror("ping: setuid");
+ exit(-1);
+ }
+#endif
+}
+
+#ifdef CAPABILITIES
+int modify_capability(cap_value_t cap, cap_flag_value_t on)
+{
+ cap_t cap_p = cap_get_proc();
+ cap_flag_value_t cap_ok;
+ int rc = -1;
+
+ if (!cap_p) {
+ perror("ping: cap_get_proc");
+ goto out;
+ }
+
+ cap_ok = CAP_CLEAR;
+ cap_get_flag(cap_p, cap, CAP_PERMITTED, &cap_ok);
+ if (cap_ok == CAP_CLEAR) {
+ rc = on ? -1 : 0;
+ goto out;
+ }
+
+ cap_set_flag(cap_p, CAP_EFFECTIVE, 1, &cap, on);
+
+ if (cap_set_proc(cap_p) < 0) {
+ perror("ping: cap_set_proc");
+ goto out;
+ }
+
+ cap_free(cap_p);
+
+ rc = 0;
+out:
+ if (cap_p)
+ cap_free(cap_p);
+ return rc;
+}
+#else
+int modify_capability(int on)
+{
+ if (seteuid(on ? euid : getuid())) {
+ perror("seteuid");
+ return -1;
+ }
+
+ return 0;
+}
+#endif
+
+void drop_capabilities(void)
+{
+#ifdef CAPABILITIES
+ cap_t cap = cap_init();
+ if (cap_set_proc(cap) < 0) {
+ perror("ping: cap_set_proc");
+ exit(-1);
+ }
+ cap_free(cap);
+#else
+ if (setuid(getuid())) {
+ perror("ping: setuid");
+ exit(-1);
+ }
+#endif
+}
+
/* Fills all the outpack, excluding ICMP header, but _including_
* timestamp area with supplied pattern.
*/
@@ -67,7 +205,11 @@
int ii, jj, kk;
int pat[16];
char *cp;
- char *bp = outpack+8;
+ u_char *bp = outpack+8;
+
+#ifdef USE_IDN
+ setlocale(LC_ALL, "C");
+#endif
for (cp = patp; *cp; cp++) {
if (!isxdigit(*cp)) {
@@ -93,6 +235,10 @@
printf("%02x", bp[jj] & 0xFF);
printf("\n");
}
+
+#ifdef USE_IDN
+ setlocale(LC_ALL, "");
+#endif
}
void common_options(int ch)
@@ -114,31 +260,37 @@
case 'd':
options |= F_SO_DEBUG;
break;
- case 'f':
- options |= F_FLOOD;
- setbuf(stdout, (char *)NULL);
+ case 'D':
+ options |= F_PTIMEOFDAY;
break;
case 'i': /* wait between sending packets */
{
- if (strchr(optarg, '.')) {
- float t;
- if (sscanf(optarg, "%f", &t) != 1) {
- fprintf(stderr, "ping: bad timing interval.\n");
- exit(2);
- }
- interval = (int)(t*1000);
- } else if (sscanf(optarg, "%d", &interval) == 1) {
- interval *= 1000;
- } else {
- fprintf(stderr, "ping: bad timing interval.\n");
+ double dbl;
+ char *ep;
+
+ errno = 0;
+ dbl = strtod(optarg, &ep);
+
+ if (errno || *ep != '\0' ||
+ !finite(dbl) || dbl < 0.0 || dbl >= (double)INT_MAX / 1000 - 1.0) {
+ fprintf(stderr, "ping: bad timing interval\n");
exit(2);
}
- if (interval < 0) {
- fprintf(stderr, "ping: bad timing interval.\n");
+ interval = (int)(dbl * 1000);
+
+ options |= F_INTERVAL;
+ break;
+ }
+ case 'm':
+ {
+ char *endp;
+ mark = (int)strtoul(optarg, &endp, 10);
+ if (mark < 0 || *endp != '\0') {
+ fprintf(stderr, "mark cannot be negative\n");
exit(2);
}
- options |= F_INTERVAL;
+ options |= F_MARK;
break;
}
case 'w':
@@ -151,16 +303,19 @@
case 'l':
preload = atoi(optarg);
if (preload <= 0) {
- fprintf(stderr, "ping: bad preload value, should be 1..%d\n", mx_dup_ck);
+ fprintf(stderr, "ping: bad preload value, should be 1..%d\n", MAX_DUP_CHK);
exit(2);
}
- if (preload > mx_dup_ck)
- preload = mx_dup_ck;
+ if (preload > MAX_DUP_CHK)
+ preload = MAX_DUP_CHK;
if (uid && preload > 3) {
fprintf(stderr, "ping: cannot set preload to value > 3\n");
exit(2);
}
break;
+ case 'O':
+ options |= F_OUTSTANDING;
+ break;
case 'S':
sndbuf = atoi(optarg);
if (sndbuf <= 0) {
@@ -168,6 +323,10 @@
exit(2);
}
break;
+ case 'f':
+ options |= F_FLOOD;
+ setbuf(stdout, (char *)NULL);
+ /* fallthrough to numeric - avoid gethostbyaddr during flood */
case 'n':
options |= F_NUMERIC;
break;
@@ -187,6 +346,11 @@
fprintf(stderr, "ping: illegal negative packet size %d.\n", datalen);
exit(2);
}
+ if (datalen > maxpacket - 8) {
+ fprintf(stderr, "ping: packet size too large: %d\n",
+ datalen);
+ exit(2);
+ }
break;
case 'v':
options |= F_VERBOSE;
@@ -217,7 +381,7 @@
lingertime *= 1000;
break;
case 'V':
- printf("ping utility, iputils-ss%s\n", SNAPSHOT);
+ printf("ping utility, iputils-%s\n", SNAPSHOT);
exit(0);
default:
abort();
@@ -228,6 +392,8 @@
static void sigexit(int signo)
{
exiting = 1;
+ if (in_pr_addr)
+ longjmp(pr_addr_jmp, 0);
}
static void sigstatus(int signo)
@@ -264,7 +430,7 @@
static inline void update_interval(void)
{
- int est = rtt ? rtt/8 : interval*1000;
+ int est = rtt ? rtt/8 : interval*1000;
interval = (est+rtt_addend+500)/1000;
if (uid && interval < MINUSERINTERVAL)
@@ -272,6 +438,19 @@
}
/*
+ * Print timestamp
+ */
+void print_timestamp(void)
+{
+ if (options & F_PTIMEOFDAY) {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ printf("[%lu.%06lu] ",
+ (unsigned long)tv.tv_sec, (unsigned long)tv.tv_usec);
+ }
+}
+
+/*
* 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,
@@ -285,7 +464,7 @@
static int tokens;
int i;
- /* Have we already sent enough? If we have, return an arbitrary positive value. */
+ /* Have we already sent enough? If we have, return an arbitrary positive value. */
if (exiting || (npackets && ntransmitted >= npackets && !deadline))
return 1000;
@@ -316,6 +495,14 @@
tokens = ntokens - interval;
}
+ if (options & F_OUTSTANDING) {
+ if (ntransmitted > 0 && !rcvd_test(ntransmitted)) {
+ print_timestamp();
+ printf("no answer yet for icmp_seq=%lu\n", (ntransmitted % MAX_DUP_CHK));
+ fflush(stdout);
+ }
+ }
+
resend:
i = send_probe();
@@ -327,7 +514,7 @@
* high preload or pipe size is very confusing. */
if ((preload < screen_width && pipesize < screen_width) ||
in_flight() < screen_width)
- write(STDOUT_FILENO, ".", 1);
+ write_stdout(".", 1);
}
return interval - tokens;
}
@@ -380,7 +567,7 @@
if (i == 0 && !(options & F_QUIET)) {
if (options & F_FLOOD)
- write(STDOUT_FILENO, "E", 1);
+ write_stdout("E", 1);
else
perror("ping: sendmsg");
}
@@ -393,7 +580,7 @@
void sock_setbufs(int icmp_sock, int alloc)
{
int rcvbuf, hold;
- int tmplen = sizeof(hold);
+ socklen_t tmplen = sizeof(hold);
if (!sndbuf)
sndbuf = alloc;
@@ -415,6 +602,7 @@
{
int hold;
struct timeval tv;
+ sigset_t sset;
if ((options & F_FLOOD) && !(options & F_INTERVAL))
interval = 0;
@@ -442,6 +630,20 @@
fprintf(stderr, "Warning: no SO_TIMESTAMP support, falling back to SIOCGSTAMP\n");
}
#endif
+ if (options & F_MARK) {
+ int ret;
+
+ enable_capability_admin();
+ ret = setsockopt(icmp_sock, SOL_SOCKET, SO_MARK, &mark, sizeof(mark));
+ disable_capability_admin();
+
+ if (ret == -1) {
+ /* we probably dont wanna exit since old kernels
+ * dont support mark ..
+ */
+ fprintf(stderr, "Warning: Failed to set mark %d\n", mark);
+ }
+ }
/* Set some SNDTIMEO to prevent blocking forever
* on sends, when device is too slow or stalls. Just put limit
@@ -464,7 +666,7 @@
if (!(options & F_PINGFILLED)) {
int i;
- char *p = outpack+8;
+ u_char *p = outpack+8;
/* Do not forget about case of small datalen,
* fill timestamp area too!
@@ -474,12 +676,15 @@
}
if (!ident)
- ident = getpid() & 0xFFFF;
+ ident = htons(getpid() & 0xFFFF);
set_signal(SIGINT, sigexit);
set_signal(SIGALRM, sigexit);
set_signal(SIGQUIT, sigstatus);
+ sigemptyset(&sset);
+ sigprocmask(SIG_SETMASK, &sset, NULL);
+
gettimeofday(&start_time, NULL);
if (deadline) {
@@ -539,7 +744,7 @@
* If next<=0 send now or as soon as possible. */
/* Technical part. Looks wicked. Could be dropped,
- * if everyone used the newest kernel. :-)
+ * if everyone used the newest kernel. :-)
* Its purpose is:
* 1. Provide intervals less than resolution of scheduler.
* Solution: spinning.
@@ -550,8 +755,8 @@
int recv_expected = in_flight();
/* If we are here, recvmsg() is unable to wait for
- * required timeout. */
- if (1000*next <= 1000000/(int)HZ) {
+ * required timeout. */
+ if (1000 % HZ == 0 ? next <= 1000 / HZ : (next < INT_MAX / HZ && next * HZ <= 1000)) {
/* Very short timeout... So, if we wait for
* something, we sleep for MININTERVAL.
* Otherwise, spin! */
@@ -587,6 +792,7 @@
* destined to other running pings. */
iov.iov_len = packlen;
+ memset(&msg, 0, sizeof(msg));
msg.msg_name = addrbuf;
msg.msg_namelen = sizeof(addrbuf);
msg.msg_iov = &iov;
@@ -630,7 +836,7 @@
not_ours = parse_reply(&msg, cc, addrbuf, recv_timep);
}
- /* See? ... someone runs another ping on this host. */
+ /* See? ... someone runs another ping on this host. */
if (not_ours)
install_filter();
@@ -647,11 +853,14 @@
finish();
}
-int gather_statistics(__u8 *ptr, int cc, __u16 seq, int hops,
- int csfailed, struct timeval *tv, char *from)
+int gather_statistics(__u8 *icmph, int icmplen,
+ int cc, __u16 seq, int hops,
+ int csfailed, struct timeval *tv, char *from,
+ void (*pr_reply)(__u8 *icmph, int cc))
{
int dupflag = 0;
long triptime = 0;
+ __u8 *ptr = icmph + icmplen;
++nreceived;
if (!csfailed)
@@ -692,12 +901,12 @@
if (csfailed) {
++nchecksum;
--nreceived;
- } else if (TST(seq % mx_dup_ck)) {
+ } else if (rcvd_test(seq)) {
++nrepeats;
--nreceived;
dupflag = 1;
} else {
- SET(seq % mx_dup_ck);
+ rcvd_set(seq);
dupflag = 0;
}
confirm = confirm_flag;
@@ -707,13 +916,18 @@
if (options & F_FLOOD) {
if (!csfailed)
- write(STDOUT_FILENO, "\b \b", 3);
+ write_stdout("\b \b", 3);
else
- write(STDOUT_FILENO, "\bC", 1);
+ write_stdout("\bC", 2);
} else {
int i;
__u8 *cp, *dp;
- printf("%d bytes from %s: icmp_seq=%u", cc, from, seq);
+
+ print_timestamp();
+ printf("%d bytes from %s:", cc, from);
+
+ if (pr_reply)
+ pr_reply(icmph, cc);
if (hops >= 0)
printf(" ttl=%d", hops);
@@ -782,6 +996,7 @@
void finish(void)
{
struct timeval tv = cur_time;
+ char *comma = "";
tvsub(&tv, &start_time);
@@ -812,18 +1027,21 @@
tmdev = llsqrt(tsum2 - tsum * tsum);
printf("rtt min/avg/max/mdev = %ld.%03ld/%lu.%03ld/%ld.%03ld/%ld.%03ld ms",
- tmin/1000, tmin%1000,
+ (long)tmin/1000, (long)tmin%1000,
(unsigned long)(tsum/1000), (long)(tsum%1000),
- tmax/1000, tmax%1000,
- tmdev/1000, tmdev%1000
+ (long)tmax/1000, (long)tmax%1000,
+ (long)tmdev/1000, (long)tmdev%1000
);
+ comma = ", ";
}
- if (pipesize > 1)
- printf(", pipe %d", pipesize);
- if (ntransmitted > 1 && (!interval || (options&(F_FLOOD|F_ADAPTIVE)))) {
+ if (pipesize > 1) {
+ printf("%spipe %d", comma, pipesize);
+ comma = ", ";
+ }
+ if (nreceived && (!interval || (options&(F_FLOOD|F_ADAPTIVE))) && ntransmitted > 1) {
int ipg = (1000000*(long long)tv.tv_sec+tv.tv_usec)/(ntransmitted-1);
- printf(", ipg/ewma %d.%03d/%d.%03d ms",
- ipg/1000, ipg%1000, rtt/8000, (rtt/8)%1000);
+ printf("%sipg/ewma %d.%03d/%d.%03d ms",
+ comma, ipg/1000, ipg%1000, rtt/8000, (rtt/8)%1000);
}
putchar('\n');
exit(!nreceived || (deadline && nreceived < npackets));
@@ -846,10 +1064,10 @@
tavg = tsum / (nreceived + nrepeats);
fprintf(stderr, ", min/avg/ewma/max = %ld.%03ld/%lu.%03ld/%d.%03d/%ld.%03ld ms",
- tmin/1000, tmin%1000,
+ (long)tmin/1000, (long)tmin%1000,
tavg/1000, tavg%1000,
rtt/8000, (rtt/8)%1000,
- tmax/1000, tmax%1000
+ (long)tmax/1000, (long)tmax%1000
);
}
fprintf(stderr, "\n");
diff --git a/ping_common.h b/ping_common.h
index 39e28a6..9cdb07b 100644
--- a/ping_common.h
+++ b/ping_common.h
@@ -16,9 +16,21 @@
#include <errno.h>
#include <string.h>
#include <netdb.h>
+#include <setjmp.h>
+
+#ifdef CAPABILITIES
+#include <sys/prctl.h>
+#include <sys/capability.h>
+#endif
+
+#ifdef USE_IDN
+#include <locale.h>
+#include <idna.h>
+#endif
#include <netinet/in.h>
#include <arpa/inet.h>
+#include <linux/types.h>
#include <linux/errqueue.h>
#ifdef ANDROID
@@ -35,12 +47,6 @@
#define SCHINT(a) (((a) <= MININTERVAL) ? MININTERVAL : (a))
-#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))
-
/* various options */
extern int options;
#define F_FLOOD 0x001
@@ -63,15 +69,58 @@
#define F_STRICTSOURCE 0x8000
#define F_NOLOOP 0x10000
#define F_TTL 0x20000
+#define F_MARK 0x40000
+#define F_PTIMEOFDAY 0x80000
+#define F_OUTSTANDING 0x100000
/*
* 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.
*/
#define MAX_DUP_CHK 0x10000
-extern int mx_dup_ck;
-extern char rcvd_tbl[MAX_DUP_CHK / 8];
+#if defined(__WORDSIZE) && __WORDSIZE == 64
+# define USE_BITMAP64
+#endif
+
+#ifdef USE_BITMAP64
+typedef __u64 bitmap_t;
+# define BITMAP_SHIFT 6
+#else
+typedef __u32 bitmap_t;
+# define BITMAP_SHIFT 5
+#endif
+
+#if ((MAX_DUP_CHK >> (BITMAP_SHIFT + 3)) << (BITMAP_SHIFT + 3)) != MAX_DUP_CHK
+# error Please MAX_DUP_CHK and/or BITMAP_SHIFT
+#endif
+
+struct rcvd_table {
+ bitmap_t bitmap[MAX_DUP_CHK / (sizeof(bitmap_t) * 8)];
+};
+
+extern struct rcvd_table rcvd_tbl;
+
+#define A(bit) (rcvd_tbl.bitmap[(bit) >> BITMAP_SHIFT]) /* identify word in array */
+#define B(bit) (((bitmap_t)1) << ((bit) & ((1 << BITMAP_SHIFT) - 1))) /* identify bit in word */
+
+static inline void rcvd_set(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ A(bit) |= B(bit);
+}
+
+static inline void rcvd_clear(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ A(bit) &= ~B(bit);
+}
+
+static inline bitmap_t rcvd_test(__u16 seq)
+{
+ unsigned bit = seq % MAX_DUP_CHK;
+ return A(bit) & B(bit);
+}
extern u_char outpack[];
extern int maxpacket;
@@ -101,6 +150,9 @@
extern int confirm_flag;
extern int working_recverr;
+extern volatile int in_pr_addr; /* pr_addr() is executing */
+extern jmp_buf pr_addr_jmp;
+
#ifndef MSG_CONFIRM
#define MSG_CONFIRM 0
#endif
@@ -121,10 +173,23 @@
case 'f': case 'i': case 'w': case 'l': \
case 'S': case 'n': case 'p': case 'q': \
case 'r': case 's': case 'v': case 'L': \
-case 't': case 'A': case 'W': case 'B':
+case 't': case 'A': case 'W': case 'B': case 'm': \
+case 'D': case 'O':
-#define COMMON_OPTSTR "h?VQ:I:M:aUc:dfi:w:l:S:np:qrs:vLt:AW:B"
+#define COMMON_OPTSTR "h?VQ:I:M:aUc:dfi:w:l:S:np:qrs:vLt:AW:Bm:DO"
+/*
+ * Write to stdout
+ */
+static inline void write_stdout(const char *str, size_t len)
+{
+ size_t o = 0;
+ ssize_t cc;
+ do {
+ cc = write(STDOUT_FILENO, str + o, len - o);
+ o += cc;
+ } while (len > o || cc < 0);
+}
/*
* tvsub --
@@ -169,7 +234,7 @@
}
static inline void acknowledge(__u16 seq)
-{
+{
__u16 diff = (__u16)ntransmitted - seq;
if (diff <= 0x7FFF) {
if ((int)diff+1 > pipesize)
@@ -188,6 +253,25 @@
acked = (__u16)ntransmitted + 1;
}
+extern void limit_capabilities(void);
+static int enable_capability_raw(void);
+static int disable_capability_raw(void);
+static int enable_capability_admin(void);
+static int disable_capability_admin(void);
+#ifdef CAPABILITIES
+extern int modify_capability(cap_value_t, cap_flag_value_t);
+static inline int enable_capability_raw(void) { return modify_capability(CAP_NET_RAW, CAP_SET); };
+static inline int disable_capability_raw(void) { return modify_capability(CAP_NET_RAW, CAP_CLEAR); };
+static inline int enable_capability_admin(void) { return modify_capability(CAP_NET_ADMIN, CAP_SET); };
+static inline int disable_capability_admin(void) { return modify_capability(CAP_NET_ADMIN, CAP_CLEAR); };
+#else
+extern int modify_capability(int);
+static inline int enable_capability_raw(void) { return modify_capability(1); };
+static inline int disable_capability_raw(void) { return modify_capability(0); };
+static inline int enable_capability_admin(void) { return modify_capability(1); };
+static inline int disable_capability_admin(void) { return modify_capability(0); };
+#endif
+extern void drop_capabilities(void);
extern int send_probe(void);
extern int receive_error_msg(void);
@@ -201,5 +285,8 @@
extern void finish(void) __attribute__((noreturn));
extern void status(void);
extern void common_options(int ch);
-extern int gather_statistics(__u8 *ptr, int cc, __u16 seq, int hops,
- int csfailed, struct timeval *tv, char *from);
+extern int gather_statistics(__u8 *ptr, int icmplen,
+ int cc, __u16 seq, int hops,
+ int csfailed, struct timeval *tv, char *from,
+ void (*pr_reply)(__u8 *ptr, int cc));
+extern void print_timestamp(void);
