2 * Object oriented C module to send ICMP and ICMPv6 `echo's.
3 * Copyright (C) 2006-2008 Florian octo Forster <octo at verplant.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; only version 2 of the License is
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 # include <inttypes.h>
33 # error "You don't have the standard C99 header files installed"
34 #endif /* STDC_HEADERS */
44 # include <sys/types.h>
47 # include <sys/stat.h>
50 #if TIME_WITH_SYS_TIME
51 # include <sys/time.h>
55 # include <sys/time.h>
62 # include <sys/socket.h>
68 #if HAVE_NETINET_IN_SYSTM_H
69 # include <netinet/in_systm.h>
72 # include <netinet/in.h>
75 # include <netinet/ip.h>
77 #if HAVE_NETINET_IP_ICMP_H
78 # include <netinet/ip_icmp.h>
80 #ifdef HAVE_NETINET_IP_VAR_H
81 # include <netinet/ip_var.h>
83 #if HAVE_NETINET_IP6_H
84 # include <netinet/ip6.h>
86 #if HAVE_NETINET_ICMP6_H
87 # include <netinet/icmp6.h>
93 # define dprintf(...) printf ("%s[%4i]: %-20s: ", __FILE__, __LINE__, __FUNCTION__); printf (__VA_ARGS__)
95 # define dprintf(...) /**/
98 #define PING_ERRMSG_LEN 256
102 /* username: name passed in by the user */
104 /* hostname: name returned by the reverse lookup */
106 struct sockaddr_storage *addr;
112 struct timeval *timer;
119 struct pinghost *next;
129 struct sockaddr_storage *srcaddr;
130 socklen_t srcaddrlen;
132 char errmsg[PING_ERRMSG_LEN];
138 * private (static) functions
140 static void ping_set_error (pingobj_t *obj, const char *function,
143 snprintf (obj->errmsg, PING_ERRMSG_LEN, "%s: %s", function, message);
144 obj->errmsg[PING_ERRMSG_LEN - 1] = '\0';
147 static int ping_timeval_add (struct timeval *tv1, struct timeval *tv2,
150 res->tv_sec = tv1->tv_sec + tv2->tv_sec;
151 res->tv_usec = tv1->tv_usec + tv2->tv_usec;
153 while (res->tv_usec > 1000000)
155 res->tv_usec -= 1000000;
162 static int ping_timeval_sub (struct timeval *tv1, struct timeval *tv2,
165 if ((tv1->tv_sec < tv2->tv_sec)
166 || ((tv1->tv_sec == tv2->tv_sec)
167 && (tv1->tv_usec < tv2->tv_usec)))
170 res->tv_sec = tv1->tv_sec - tv2->tv_sec;
171 res->tv_usec = tv1->tv_usec - tv2->tv_usec;
173 assert ((res->tv_sec > 0) || ((res->tv_sec == 0) && (res->tv_usec >= 0)));
175 while (res->tv_usec < 0)
177 res->tv_usec += 1000000;
184 static uint16_t ping_icmp4_checksum (char *buf, size_t len)
191 for (ptr = (uint16_t *) buf; len > 1; ptr++, len -= 2)
196 *(char *) &ret = *(char *) ptr;
200 /* Do this twice to get all possible carries.. */
201 sum = (sum >> 16) + (sum & 0xFFFF);
202 sum = (sum >> 16) + (sum & 0xFFFF);
209 static pinghost_t *ping_receive_ipv4 (pinghost_t *ph, char *buffer, size_t buffer_len)
212 struct icmp *icmp_hdr;
216 uint16_t recv_checksum;
217 uint16_t calc_checksum;
224 if (buffer_len < sizeof (struct ip))
227 ip_hdr = (struct ip *) buffer;
228 ip_hdr_len = ip_hdr->ip_hl << 2;
230 if (buffer_len < ip_hdr_len)
233 buffer += ip_hdr_len;
234 buffer_len -= ip_hdr_len;
236 if (buffer_len < sizeof (struct icmp))
239 icmp_hdr = (struct icmp *) buffer;
240 buffer += sizeof (struct icmp);
241 buffer_len -= sizeof (struct icmp);
243 if (icmp_hdr->icmp_type != ICMP_ECHOREPLY)
245 dprintf ("Unexpected ICMP type: %i\n", icmp_hdr->icmp_type);
249 recv_checksum = icmp_hdr->icmp_cksum;
250 icmp_hdr->icmp_cksum = 0;
251 calc_checksum = ping_icmp4_checksum ((char *) icmp_hdr,
252 sizeof (struct icmp) + buffer_len);
254 if (recv_checksum != calc_checksum)
256 dprintf ("Checksum missmatch: Got 0x%04x, calculated 0x%04x\n",
257 recv_checksum, calc_checksum);
261 ident = ntohs (icmp_hdr->icmp_id);
262 seq = ntohs (icmp_hdr->icmp_seq);
264 for (ptr = ph; ptr != NULL; ptr = ptr->next)
266 dprintf ("hostname = %s, ident = 0x%04x, seq = %i\n",
267 ptr->hostname, ptr->ident, ((ptr->sequence - 1) & 0xFFFF));
269 if (ptr->addrfamily != AF_INET)
272 if (!timerisset (ptr->timer))
275 if (ptr->ident != ident)
278 if (((ptr->sequence - 1) & 0xFFFF) != seq)
281 dprintf ("Match found: hostname = %s, ident = 0x%04x, seq = %i\n",
282 ptr->hostname, ident, seq);
289 dprintf ("No match found for ident = 0x%04x, seq = %i\n",
296 #ifndef ICMP6_ECHO_REQUEST
297 # ifdef ICMP6_ECHO /* AIX netinet/ip6_icmp.h */
298 # define ICMP6_ECHO_REQUEST ICMP6_ECHO
300 # define ICMP6_ECHO_REQUEST 128
304 #ifndef ICMP6_ECHO_REPLY
305 # ifdef ICMP6_ECHOREPLY /* AIX netinet/ip6_icmp.h */
306 # define ICMP6_ECHO_REPLY ICMP6_ECHOREPLY
308 # define ICMP6_ECHO_REPLY 129
312 static pinghost_t *ping_receive_ipv6 (pinghost_t *ph, char *buffer, size_t buffer_len)
314 struct icmp6_hdr *icmp_hdr;
321 if (buffer_len < sizeof (struct icmp6_hdr))
324 icmp_hdr = (struct icmp6_hdr *) buffer;
325 buffer += sizeof (struct icmp);
326 buffer_len -= sizeof (struct icmp);
328 if (icmp_hdr->icmp6_type != ICMP6_ECHO_REPLY)
330 dprintf ("Unexpected ICMP type: %02x\n", icmp_hdr->icmp6_type);
334 if (icmp_hdr->icmp6_code != 0)
336 dprintf ("Unexpected ICMP code: %02x\n", icmp_hdr->icmp6_code);
340 ident = ntohs (icmp_hdr->icmp6_id);
341 seq = ntohs (icmp_hdr->icmp6_seq);
343 for (ptr = ph; ptr != NULL; ptr = ptr->next)
345 dprintf ("hostname = %s, ident = 0x%04x, seq = %i\n",
346 ptr->hostname, ptr->ident, ((ptr->sequence - 1) & 0xFFFF));
348 if (ptr->addrfamily != AF_INET6)
351 if (!timerisset (ptr->timer))
354 if (ptr->ident != ident)
357 if (((ptr->sequence - 1) & 0xFFFF) != seq)
360 dprintf ("Match found: hostname = %s, ident = 0x%04x, seq = %i\n",
361 ptr->hostname, ident, seq);
368 dprintf ("No match found for ident = 0x%04x, seq = %i\n",
375 static int ping_receive_one (int fd, pinghost_t *ph, struct timeval *now)
382 pinghost_t *host = NULL;
384 struct sockaddr_storage sa;
387 sa_len = sizeof (sa);
389 buffer_len = recvfrom (fd, buffer, sizeof (buffer), 0,
390 (struct sockaddr *) &sa, &sa_len);
391 if (buffer_len == -1)
393 dprintf ("recvfrom: %s\n", strerror (errno));
397 dprintf ("Read %u bytes from fd = %i\n", (unsigned int) buffer_len, fd);
399 if (sa.ss_family == AF_INET)
401 if ((host = ping_receive_ipv4 (ph, buffer, buffer_len)) == NULL)
404 else if (sa.ss_family == AF_INET6)
406 if ((host = ping_receive_ipv6 (ph, buffer, buffer_len)) == NULL)
410 dprintf ("rcvd: %12i.%06i\n",
413 dprintf ("sent: %12i.%06i\n",
414 (int) host->timer->tv_sec,
415 (int) host->timer->tv_usec);
417 if (ping_timeval_sub (now, host->timer, &diff) < 0)
419 timerclear (host->timer);
423 dprintf ("diff: %12i.%06i\n",
427 host->latency = ((double) diff.tv_usec) / 1000.0;
428 host->latency += ((double) diff.tv_sec) * 1000.0;
430 timerclear (host->timer);
435 static int ping_receive_all (pingobj_t *obj)
444 struct timeval endtime;
445 struct timeval nowtime;
446 struct timeval timeout;
454 for (ptr = ph; ptr != NULL; ptr = ptr->next)
457 if (gettimeofday (&nowtime, NULL) == -1)
459 ping_set_error (obj, "gettimeofday", strerror (errno));
464 timeout.tv_sec = (time_t) obj->timeout;
465 timeout.tv_usec = (suseconds_t) (1000000 * (obj->timeout - ((double) timeout.tv_sec)));
467 dprintf ("Set timeout to %i.%06i seconds\n",
468 (int) timeout.tv_sec,
469 (int) timeout.tv_usec);
471 ping_timeval_add (&nowtime, &timeout, &endtime);
479 for (ptr = ph; ptr != NULL; ptr = ptr->next)
481 if (!timerisset (ptr->timer))
484 FD_SET (ptr->fd, &readfds);
487 if (max_readfds < ptr->fd)
488 max_readfds = ptr->fd;
491 if (num_readfds == 0)
494 if (gettimeofday (&nowtime, NULL) == -1)
496 ping_set_error (obj, "gettimeofday", strerror (errno));
500 if (ping_timeval_sub (&endtime, &nowtime, &timeout) == -1)
503 dprintf ("Waiting on %i sockets for %i.%06i seconds\n", num_readfds,
504 (int) timeout.tv_sec,
505 (int) timeout.tv_usec);
507 status = select (max_readfds + 1, &readfds, NULL, NULL, &timeout);
509 if (gettimeofday (&nowtime, NULL) == -1)
511 ping_set_error (obj, "gettimeofday", strerror (errno));
515 if ((status == -1) && (errno == EINTR))
517 dprintf ("select was interrupted by signal..\n");
522 dprintf ("select: %s\n", strerror (errno));
525 else if (status == 0)
527 dprintf ("select timed out\n");
528 for (ptr = ph; ptr != NULL; ptr = ptr->next)
529 if (ptr->latency < 0.0)
534 for (ptr = ph; ptr != NULL; ptr = ptr->next)
536 if (FD_ISSET (ptr->fd, &readfds))
537 if (ping_receive_one (ptr->fd, ph, &nowtime) == 0)
545 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
546 * Sending functions: *
549 * +-> ping_send_one_ipv4 *
550 * `-> ping_send_one_ipv6 *
551 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
552 static ssize_t ping_sendto (pingobj_t *obj, pinghost_t *ph,
553 const void *buf, size_t buflen)
557 if (gettimeofday (ph->timer, NULL) == -1)
559 timerclear (ph->timer);
563 ret = sendto (ph->fd, buf, buflen, 0,
564 (struct sockaddr *) ph->addr, ph->addrlen);
568 #if defined(EHOSTUNREACH)
569 if (errno == EHOSTUNREACH)
572 #if defined(ENETUNREACH)
573 if (errno == ENETUNREACH)
576 ping_set_error (obj, "sendto", strerror (errno));
582 static int ping_send_one_ipv4 (pingobj_t *obj, pinghost_t *ph)
593 dprintf ("ph->hostname = %s\n", ph->hostname);
595 memset (buf, '\0', sizeof (buf));
596 icmp4 = (struct icmp *) buf;
597 data = (char *) (icmp4 + 1);
599 icmp4->icmp_type = ICMP_ECHO;
600 icmp4->icmp_code = 0;
601 icmp4->icmp_cksum = 0;
602 icmp4->icmp_id = htons (ph->ident);
603 icmp4->icmp_seq = htons (ph->sequence);
605 buflen = 4096 - sizeof (struct icmp);
606 strncpy (data, ph->data, buflen);
607 datalen = strlen (data);
609 buflen = datalen + sizeof (struct icmp);
611 icmp4->icmp_cksum = ping_icmp4_checksum (buf, buflen);
613 dprintf ("Sending ICMPv4 package with ID 0x%04x\n", ph->ident);
615 status = ping_sendto (obj, ph, buf, buflen);
618 perror ("ping_sendto");
622 dprintf ("sendto: status = %i\n", status);
627 static int ping_send_one_ipv6 (pingobj_t *obj, pinghost_t *ph)
629 struct icmp6_hdr *icmp6;
638 dprintf ("ph->hostname = %s\n", ph->hostname);
640 memset (buf, '\0', sizeof (buf));
641 icmp6 = (struct icmp6_hdr *) buf;
642 data = (char *) (icmp6 + 1);
644 icmp6->icmp6_type = ICMP6_ECHO_REQUEST;
645 icmp6->icmp6_code = 0;
646 /* The checksum will be calculated by the TCP/IP stack. */
648 icmp6->icmp6_cksum = 0;
649 icmp6->icmp6_id = htons (ph->ident);
650 icmp6->icmp6_seq = htons (ph->sequence);
652 buflen = 4096 - sizeof (struct icmp6_hdr);
653 strncpy (data, ph->data, buflen);
654 datalen = strlen (data);
656 buflen = datalen + sizeof (struct icmp6_hdr);
658 dprintf ("Sending ICMPv6 package with ID 0x%04x\n", ph->ident);
660 status = ping_sendto (obj, ph, buf, buflen);
663 perror ("ping_sendto");
667 dprintf ("sendto: status = %i\n", status);
672 static int ping_send_all (pingobj_t *obj)
682 for (ptr = ph; ptr != NULL; ptr = ptr->next)
684 /* start timer.. The GNU `ping6' starts the timer before
685 * sending the packet, so I will do that too */
686 if (gettimeofday (ptr->timer, NULL) == -1)
688 dprintf ("gettimeofday: %s\n", strerror (errno));
689 timerclear (ptr->timer);
695 dprintf ("timer set for hostname = %s\n", ptr->hostname);
698 if (ptr->addrfamily == AF_INET6)
700 dprintf ("Sending ICMPv6 echo request to `%s'\n", ptr->hostname);
701 if (ping_send_one_ipv6 (obj, ptr) != 0)
703 timerclear (ptr->timer);
708 else if (ptr->addrfamily == AF_INET)
710 dprintf ("Sending ICMPv4 echo request to `%s'\n", ptr->hostname);
711 if (ping_send_one_ipv4 (obj, ptr) != 0)
713 timerclear (ptr->timer);
718 else /* this should not happen */
720 dprintf ("Unknown address family: %i\n", ptr->addrfamily);
721 timerclear (ptr->timer);
733 * Set the TTL of a socket protocol independently.
735 static int ping_set_ttl (pinghost_t *ph, int ttl)
739 if (ph->addrfamily == AF_INET)
741 ret = setsockopt (ph->fd, IPPROTO_IP, IP_TTL, &ttl, sizeof (ttl));
743 else if (ph->addrfamily == AF_INET6)
745 ret = setsockopt (ph->fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof (ttl));
751 static int ping_get_ident (void)
754 static int did_seed = 0;
760 if ((fd = open ("/dev/urandom", O_RDONLY)) != -1)
764 if (read (fd, &seed, sizeof (seed)) != -1)
767 dprintf ("Random seed: %i\n", seed);
775 dprintf ("open (/dev/urandom): %s\n", strerror (errno));
779 retval = (int) random ();
781 dprintf ("Random number: %i\n", retval);
786 static pinghost_t *ping_alloc (void)
791 ph_size = sizeof (pinghost_t)
792 + sizeof (struct sockaddr_storage)
793 + sizeof (struct timeval);
795 ph = (pinghost_t *) malloc (ph_size);
799 memset (ph, '\0', ph_size);
801 ph->timer = (struct timeval *) (ph + 1);
802 ph->addr = (struct sockaddr_storage *) (ph->timer + 1);
804 ph->addrlen = sizeof (struct sockaddr_storage);
808 ph->ident = ping_get_ident () & 0xFFFF;
813 static void ping_free (pinghost_t *ph)
818 if (ph->username != NULL)
821 if (ph->hostname != NULL)
824 if (ph->data != NULL)
833 const char *ping_get_error (pingobj_t *obj)
835 return (obj->errmsg);
838 pingobj_t *ping_construct (void)
842 if ((obj = (pingobj_t *) malloc (sizeof (pingobj_t))) == NULL)
844 memset (obj, '\0', sizeof (pingobj_t));
846 obj->timeout = PING_DEF_TIMEOUT;
847 obj->ttl = PING_DEF_TTL;
848 obj->addrfamily = PING_DEF_AF;
849 obj->data = strdup (PING_DEF_DATA);
854 void ping_destroy (pingobj_t *obj)
862 while (current != NULL)
864 next = current->next;
869 if (obj->data != NULL)
872 if (obj->srcaddr != NULL)
880 int ping_setopt (pingobj_t *obj, int option, void *value)
886 case PING_OPT_TIMEOUT:
887 obj->timeout = *((double *) value);
888 if (obj->timeout < 0.0)
890 obj->timeout = PING_DEF_TIMEOUT;
896 obj->ttl = *((int *) value);
897 if ((obj->ttl < 1) || (obj->ttl > 255))
899 obj->ttl = PING_DEF_TTL;
905 obj->addrfamily = *((int *) value);
906 if ((obj->addrfamily != AF_UNSPEC)
907 && (obj->addrfamily != AF_INET)
908 && (obj->addrfamily != AF_INET6))
910 obj->addrfamily = PING_DEF_AF;
913 if (obj->srcaddr != NULL)
921 if (obj->data != NULL)
926 obj->data = strdup ((const char *) value);
929 case PING_OPT_SOURCE:
931 char *hostname = (char *) value;
932 struct addrinfo ai_hints;
933 struct addrinfo *ai_list;
936 if (obj->addrfamily != AF_UNSPEC)
938 dprintf ("Resetting obj->addrfamily to AF_UNSPEC.\n");
941 memset ((void *) &ai_hints, '\0', sizeof (ai_hints));
942 ai_hints.ai_family = obj->addrfamily = AF_UNSPEC;
943 #if defined(AI_ADDRCONFIG)
944 ai_hints.ai_flags = AI_ADDRCONFIG;
946 status = getaddrinfo (hostname, NULL, &ai_hints, &ai_list);
949 ping_set_error (obj, "getaddrinfo",
950 #if defined(EAI_SYSTEM)
951 (status == EAI_SYSTEM)
954 gai_strerror (status));
959 if (ai_list->ai_next != NULL)
961 dprintf ("hostname = `%s' is ambiguous.\n", hostname);
964 if (obj->srcaddr == NULL)
967 obj->srcaddr = (struct sockaddr_storage *) malloc (sizeof (struct sockaddr_storage));
968 if (obj->srcaddr == NULL)
970 ping_set_error (obj, "malloc",
973 freeaddrinfo (ai_list);
977 memset ((void *) obj->srcaddr, '\0', sizeof (struct sockaddr_storage));
978 assert (ai_list->ai_addrlen <= sizeof (struct sockaddr_storage));
979 memcpy ((void *) obj->srcaddr, (const void *) ai_list->ai_addr,
980 ai_list->ai_addrlen);
981 obj->srcaddrlen = ai_list->ai_addrlen;
982 obj->addrfamily = ai_list->ai_family;
984 freeaddrinfo (ai_list);
985 } /* case PING_OPT_SOURCE */
990 } /* switch (option) */
993 } /* int ping_setopt */
996 int ping_send (pingobj_t *obj)
1000 if (ping_send_all (obj) < 0)
1003 if ((ret = ping_receive_all (obj)) < 0)
1009 static pinghost_t *ping_host_search (pinghost_t *ph, const char *host)
1013 if (strcasecmp (ph->username, host) == 0)
1022 int ping_host_add (pingobj_t *obj, const char *host)
1026 struct sockaddr_storage sockaddr;
1027 socklen_t sockaddr_len;
1029 struct addrinfo ai_hints;
1030 struct addrinfo *ai_list, *ai_ptr;
1033 dprintf ("host = %s\n", host);
1035 if (ping_host_search (obj->head, host) != NULL)
1038 memset (&ai_hints, '\0', sizeof (ai_hints));
1039 ai_hints.ai_flags = 0;
1040 #ifdef AI_ADDRCONFIG
1041 ai_hints.ai_flags |= AI_ADDRCONFIG;
1044 ai_hints.ai_flags |= AI_CANONNAME;
1046 ai_hints.ai_family = obj->addrfamily;
1047 ai_hints.ai_socktype = SOCK_RAW;
1049 if ((ph = ping_alloc ()) == NULL)
1051 dprintf ("Out of memory!\n");
1055 if ((ph->username = strdup (host)) == NULL)
1057 dprintf ("Out of memory!\n");
1058 ping_set_error (obj, "strdup", strerror (errno));
1063 if ((ph->hostname = strdup (host)) == NULL)
1065 dprintf ("Out of memory!\n");
1066 ping_set_error (obj, "strdup", strerror (errno));
1071 /* obj->data is not garuanteed to be != NULL */
1072 if ((ph->data = strdup (obj->data == NULL ? PING_DEF_DATA : obj->data)) == NULL)
1074 dprintf ("Out of memory!\n");
1075 ping_set_error (obj, "strdup", strerror (errno));
1080 if ((ai_return = getaddrinfo (host, NULL, &ai_hints, &ai_list)) != 0)
1082 dprintf ("getaddrinfo failed\n");
1083 ping_set_error (obj, "getaddrinfo",
1084 #if defined(EAI_SYSTEM)
1085 (ai_return == EAI_SYSTEM)
1086 ? strerror (errno) :
1088 gai_strerror (ai_return));
1093 if (ai_list == NULL)
1094 ping_set_error (obj, "getaddrinfo", "No hosts returned");
1096 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
1100 sockaddr_len = sizeof (sockaddr);
1101 memset (&sockaddr, '\0', sockaddr_len);
1103 if (ai_ptr->ai_family == AF_INET)
1105 struct sockaddr_in *si;
1107 si = (struct sockaddr_in *) &sockaddr;
1108 si->sin_family = AF_INET;
1109 si->sin_port = htons (ph->ident);
1110 si->sin_addr.s_addr = htonl (INADDR_ANY);
1112 ai_ptr->ai_socktype = SOCK_RAW;
1113 ai_ptr->ai_protocol = IPPROTO_ICMP;
1115 else if (ai_ptr->ai_family == AF_INET6)
1117 struct sockaddr_in6 *si;
1119 si = (struct sockaddr_in6 *) &sockaddr;
1120 si->sin6_family = AF_INET6;
1121 si->sin6_port = htons (ph->ident);
1122 si->sin6_addr = in6addr_any;
1124 ai_ptr->ai_socktype = SOCK_RAW;
1125 ai_ptr->ai_protocol = IPPROTO_ICMPV6;
1129 char errmsg[PING_ERRMSG_LEN];
1131 snprintf (errmsg, PING_ERRMSG_LEN, "Unknown `ai_family': %i", ai_ptr->ai_family);
1132 errmsg[PING_ERRMSG_LEN - 1] = '\0';
1135 ping_set_error (obj, "getaddrinfo", errmsg);
1139 /* TODO: Move this to a static function `ping_open_socket' and
1140 * call it whenever the socket dies. */
1141 ph->fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol);
1144 dprintf ("socket: %s\n", strerror (errno));
1145 ping_set_error (obj, "socket", strerror (errno));
1149 if (obj->srcaddr != NULL)
1151 assert (obj->srcaddrlen > 0);
1152 assert (obj->srcaddrlen <= sizeof (struct sockaddr_storage));
1154 if (bind (ph->fd, (struct sockaddr *) obj->srcaddr, obj->srcaddrlen) == -1)
1156 dprintf ("bind: %s\n", strerror (errno));
1157 ping_set_error (obj, "bind", strerror (errno));
1164 assert (sizeof (struct sockaddr_storage) >= ai_ptr->ai_addrlen);
1165 memset (ph->addr, '\0', sizeof (struct sockaddr_storage));
1166 memcpy (ph->addr, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
1167 ph->addrlen = ai_ptr->ai_addrlen;
1168 ph->addrfamily = ai_ptr->ai_family;
1171 if ((ai_ptr->ai_canonname != NULL)
1172 && (strcmp (ph->hostname, ai_ptr->ai_canonname) != 0))
1176 dprintf ("ph->hostname = %s; ai_ptr->ai_canonname = %s;\n",
1177 ph->hostname, ai_ptr->ai_canonname);
1179 old_hostname = ph->hostname;
1180 if ((ph->hostname = strdup (ai_ptr->ai_canonname)) == NULL)
1182 /* strdup failed, falling back to old hostname */
1183 ph->hostname = old_hostname;
1185 else if (old_hostname != NULL)
1187 free (old_hostname);
1190 #endif /* AI_CANONNAME */
1195 freeaddrinfo (ai_list);
1204 * Adding in the front is much easier, but then the iterator will
1205 * return the host that was added last as first host. That's just not
1208 if (obj->head == NULL)
1217 while (hptr->next != NULL)
1220 assert ((hptr != NULL) && (hptr->next == NULL));
1224 ping_set_ttl (ph, obj->ttl);
1229 int ping_host_remove (pingobj_t *obj, const char *host)
1231 pinghost_t *pre, *cur;
1238 if (strcasecmp (host, cur->username) == 0)
1247 ping_set_error (obj, "ping_host_remove", "Host not found");
1252 obj->head = cur->next;
1254 pre->next = cur->next;
1261 pingobj_iter_t *ping_iterator_get (pingobj_t *obj)
1263 return ((pingobj_iter_t *) obj->head);
1266 pingobj_iter_t *ping_iterator_next (pingobj_iter_t *iter)
1268 return ((pingobj_iter_t *) iter->next);
1271 int ping_iterator_get_info (pingobj_iter_t *iter, int info,
1272 void *buffer, size_t *buffer_len)
1276 size_t orig_buffer_len = *buffer_len;
1280 case PING_INFO_USERNAME:
1282 *buffer_len = strlen (iter->username) + 1;
1283 if (orig_buffer_len <= *buffer_len)
1285 /* Since (orig_buffer_len > *buffer_len) `strncpy'
1286 * will copy `*buffer_len' and pad the rest of
1287 * `buffer' with null-bytes */
1288 strncpy (buffer, iter->username, orig_buffer_len);
1292 case PING_INFO_HOSTNAME:
1294 *buffer_len = strlen (iter->hostname) + 1;
1295 if (orig_buffer_len <= *buffer_len)
1297 /* Since (orig_buffer_len > *buffer_len) `strncpy'
1298 * will copy `*buffer_len' and pad the rest of
1299 * `buffer' with null-bytes */
1300 strncpy (buffer, iter->hostname, orig_buffer_len);
1304 case PING_INFO_ADDRESS:
1305 ret = getnameinfo ((struct sockaddr *) iter->addr,
1313 if ((ret == EAI_MEMORY)
1315 || (ret == EAI_OVERFLOW)
1319 #if defined(EAI_SYSTEM)
1320 else if (ret == EAI_SYSTEM)
1328 case PING_INFO_FAMILY:
1330 *buffer_len = sizeof (int);
1331 if (orig_buffer_len < sizeof (int))
1333 *((int *) buffer) = iter->addrfamily;
1337 case PING_INFO_LATENCY:
1339 *buffer_len = sizeof (double);
1340 if (orig_buffer_len < sizeof (double))
1342 *((double *) buffer) = iter->latency;
1346 case PING_INFO_DROPPED:
1348 *buffer_len = sizeof (uint32_t);
1349 if (orig_buffer_len < sizeof (uint32_t))
1351 *((uint32_t *) buffer) = iter->dropped;
1355 case PING_INFO_SEQUENCE:
1357 *buffer_len = sizeof (unsigned int);
1358 if (orig_buffer_len < sizeof (unsigned int))
1360 *((unsigned int *) buffer) = (unsigned int) iter->sequence;
1364 case PING_INFO_IDENT:
1366 *buffer_len = sizeof (uint16_t);
1367 if (orig_buffer_len < sizeof (uint16_t))
1369 *((uint16_t *) buffer) = (uint16_t) iter->ident;
1373 case PING_INFO_DATA:
1375 *buffer_len = strlen (iter->data);
1376 if (orig_buffer_len < *buffer_len)
1378 strncpy ((char *) buffer, iter->data, orig_buffer_len);
1384 } /* ping_iterator_get_info */
1386 void *ping_iterator_get_context (pingobj_iter_t *iter)
1388 return (iter->context);
1391 void ping_iterator_set_context (pingobj_iter_t *iter, void *context)
1393 iter->context = context;