| /* $USAGI: ninfod.c,v 1.34 2003-01-15 06:41:23 mk Exp $ */ |
| /* |
| * Copyright (C) 2002 USAGI/WIDE Project. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the project nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| /* |
| * Author: |
| * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
| */ |
| |
| #if HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #if HAVE_SYS_TYPES_H |
| # include <sys/types.h> |
| #endif |
| #if STDC_HEADERS |
| # include <stdio.h> |
| # include <stdlib.h> |
| # include <stddef.h> |
| # include <stdarg.h> |
| #else |
| # if HAVE_STDLIB_H |
| # include <stdlib.h> |
| # endif |
| #endif |
| |
| #if HAVE_STRING_H |
| # if !STDC_HEADERS && HAVE_MEMORY_H |
| # include <memory.h> |
| # endif |
| # include <string.h> |
| #endif |
| #if HAVE_STRINGS_H |
| # include <strings.h> |
| #endif |
| #if HAVE_INTTYPES_H |
| # include <inttypes.h> |
| #else |
| # if HAVE_STDINT_H |
| # include <stdint.h> |
| # endif |
| #endif |
| #if HAVE_LIMITS_H |
| # include <limits.h> |
| #endif |
| #if HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| |
| #ifdef TIME_WITH_SYS_TIME |
| # include <sys/time.h> |
| # include <time.h> |
| #else |
| # ifdef HAVE_SYS_TIME_H |
| # include <sys/time.h> |
| # else |
| # include <time.h> |
| # endif |
| #endif |
| |
| #if HAVE_SYS_UIO_H |
| #include <sys/uio.h> |
| #endif |
| |
| #include <sys/socket.h> |
| |
| #if HAVE_NETINET_IN_H |
| # include <netinet/in.h> |
| #endif |
| |
| #if HAVE_NETINET_ICMP6_H |
| # include <netinet/icmp6.h> |
| #endif |
| #ifndef HAVE_STRUCT_ICMP6_NODEINFO |
| # include "icmp6_nodeinfo.h" |
| #endif |
| |
| #if HAVE_NETDB_H |
| # include <netdb.h> |
| #endif |
| #include <errno.h> |
| |
| #include <signal.h> |
| |
| #if HAVE_SYSLOG_H |
| # include <syslog.h> |
| #endif |
| |
| #if HAVE_PWD_H |
| # include <pwd.h> |
| #endif |
| |
| #if HAVE_SYS_CAPABILITY_H |
| # include <sys/prctl.h> |
| # include <sys/capability.h> |
| #endif |
| |
| #include "ninfod.h" |
| |
| #ifndef offsetof |
| # define offsetof(aggregate,member) ((size_t)&((aggregate *)0)->member) |
| #endif |
| |
| /* --------- */ |
| /* ID */ |
| static char *RCSID __attribute__ ((unused)) = "$USAGI: ninfod.c,v 1.34 2003-01-15 06:41:23 mk Exp $"; |
| |
| /* Variables */ |
| int sock; |
| int daemonized; |
| |
| char *appname; |
| static int opt_d = 0; /* debug */ |
| static int opt_h = 0; /* help */ |
| static char *opt_p = NINFOD_PIDFILE; /* pidfile */ |
| static int got_signal = 0; /* loop unless true */ |
| int opt_v = 0; /* verbose */ |
| static uid_t opt_u; |
| |
| static int ipv6_pktinfo = IPV6_PKTINFO; |
| |
| /* --------- */ |
| #if ENABLE_DEBUG |
| static const __inline__ char * log_level(int priority) { |
| switch(priority) { |
| case LOG_EMERG: return "EMERG"; |
| case LOG_ALERT: return "ALERT"; |
| case LOG_CRIT: return "CRIT"; |
| case LOG_ERR: return "ERR"; |
| case LOG_WARNING: return "WARNING"; |
| case LOG_NOTICE: return "NOTICE"; |
| case LOG_INFO: return "INFO"; |
| case LOG_DEBUG: return "DEBUG"; |
| default: return "???"; |
| } |
| } |
| |
| void stderrlog(int pri, char *fmt, ...) |
| { |
| va_list ap; |
| char ebuf[512]; |
| char *buf; |
| size_t buflen; |
| |
| va_start(ap, fmt); |
| |
| for (buf = ebuf, buflen = sizeof(ebuf); |
| buflen < SIZE_MAX / 2; |
| free(buf != ebuf ? buf : NULL), buf = NULL, buflen *= 2) { |
| size_t rem; |
| size_t res; |
| |
| buf = malloc(buflen); |
| if (!buf) |
| break; /*XXX*/ |
| |
| rem = buflen; |
| |
| res = snprintf(buf, rem, "[%s] ", log_level(pri)); |
| if (res >= rem) |
| continue; |
| rem -= res; |
| |
| res = vsnprintf(buf + res, rem, fmt, ap); |
| |
| if (res >= rem) |
| continue; |
| break; |
| } |
| |
| if (buf) { |
| fputs(buf, stderr); |
| free(buf != ebuf ? buf : NULL); |
| } |
| |
| va_end(ap); |
| } |
| #endif |
| |
| /* --------- */ |
| static int __inline__ open_sock(void) |
| { |
| return socket(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6); |
| } |
| |
| static int set_recvpktinfo(int sock) |
| { |
| int on, ret; |
| |
| on = 1; |
| |
| #if defined(IPV6_RECVPKTINFO) |
| ret = setsockopt(sock, |
| IPPROTO_IPV6, IPV6_RECVPKTINFO, |
| &on, sizeof(on)); |
| if (!ret) |
| return 0; |
| # if defined(IPV6_2292PKTINFO) |
| ret = setsockopt(sock, |
| IPPROTO_IPV6, IPV6_2292PKTINFO, |
| &on, sizeof(on)); |
| if (!ret) { |
| ipv6_pktinfo = IPV6_2292PKTINFO; |
| return 0; |
| } |
| |
| DEBUG(LOG_ERR, "setsockopt(IPV6_RECVPKTINFO/IPV6_2292PKTINFO): %s\n", |
| strerror(errno)); |
| # else |
| DEBUG(LOG_ERR, "setsockopt(IPV6_RECVPKTINFO): %s\n", |
| strerror(errno)); |
| # endif |
| #else |
| ret = setsockopt(sock, |
| IPPROTO_IPV6, IPV6_PKTINFO, |
| &on, sizeof(on)); |
| if (!ret) |
| return 0; |
| |
| DEBUG(LOG_ERR, "setsockopt(IPV6_PKTINFO): %s\n", |
| strerror(errno)); |
| #endif |
| |
| return -1; |
| } |
| |
| static int __inline__ init_sock(int sock) |
| { |
| struct icmp6_filter filter; |
| #if NEED_IPV6CHECKSUM |
| int i; |
| |
| i = offsetof(struct icmp6_nodeinfo, ni_cksum); |
| if (setsockopt(sock, |
| IPPROTO_IPV6, IPV6_CHECKSUM, |
| &i, sizeof(i)) < 0) { |
| DEBUG(LOG_ERR, "setsockopt(IPV6_CHECKSUM): %s\n", |
| strerror(errno)); |
| return -1; |
| } |
| #endif |
| |
| ICMP6_FILTER_SETBLOCKALL(&filter); |
| ICMP6_FILTER_SETPASS(ICMP6_NI_QUERY, &filter); |
| if (setsockopt(sock, |
| IPPROTO_ICMPV6, ICMP6_FILTER, |
| &filter, sizeof(filter)) < 0) { |
| DEBUG(LOG_ERR, "setsockopt(ICMP6_FILTER): %s\n", |
| strerror(errno)); |
| return -1; |
| } |
| |
| if (set_recvpktinfo(sock) < 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| /* --------- */ |
| int ni_recv(struct packetcontext *p) |
| { |
| int sock = p->sock; |
| struct iovec iov[1]; |
| struct msghdr msgh; |
| char recvcbuf[CMSG_SPACE(sizeof(p->pktinfo))]; |
| struct cmsghdr *cmsg; |
| int cc; |
| |
| DEBUG(LOG_DEBUG, "%s()\n", __func__); |
| |
| memset(&iov, 0, sizeof(iov)); |
| iov[0].iov_base = p->query; |
| iov[0].iov_len = sizeof(p->query); |
| |
| memset(&msgh, 0, sizeof(msgh)); |
| msgh.msg_name = (struct sockaddr *)&p->addr; |
| msgh.msg_namelen = sizeof(p->addr); |
| msgh.msg_iov = iov; |
| msgh.msg_iovlen = 1; |
| msgh.msg_control = recvcbuf; |
| msgh.msg_controllen = sizeof(recvcbuf); |
| |
| if ((cc = recvmsg(sock, &msgh, 0)) < 0) |
| return -1; |
| |
| p->querylen = cc; |
| p->addrlen = msgh.msg_namelen; |
| |
| for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg; |
| cmsg = CMSG_NXTHDR(&msgh, cmsg)) { |
| if (cmsg->cmsg_level == IPPROTO_IPV6 && |
| (cmsg->cmsg_type == IPV6_PKTINFO |
| #if defined(IPV6_2292PKTINFO) |
| || cmsg->cmsg_type == IPV6_2292PKTINFO |
| #endif |
| )) { |
| memcpy(&p->pktinfo, CMSG_DATA(cmsg), sizeof(p->pktinfo)); |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int ni_send(struct packetcontext *p) |
| { |
| int sock = p->sock; |
| struct iovec iov[2]; |
| char cbuf[CMSG_SPACE(sizeof(p->pktinfo))]; |
| struct msghdr msgh; |
| struct cmsghdr *cmsg; |
| int cc; |
| |
| DEBUG(LOG_DEBUG, "%s()\n", __func__); |
| |
| memset(&iov, 0, sizeof(iov)); |
| iov[0].iov_base = &p->reply; |
| iov[0].iov_len = sizeof(p->reply); |
| iov[1].iov_base = p->replydata; |
| iov[1].iov_len = p->replydatalen; |
| |
| memset(&msgh, 0, sizeof(msgh)); |
| msgh.msg_name = (struct sockaddr *)&p->addr; |
| msgh.msg_namelen = p->addrlen; |
| msgh.msg_iov = iov; |
| msgh.msg_iovlen = p->replydata ? 2 : 1; |
| |
| msgh.msg_control = cbuf; |
| msgh.msg_controllen = sizeof(cbuf); |
| |
| cmsg = CMSG_FIRSTHDR(&msgh); |
| cmsg->cmsg_level = IPPROTO_IPV6; |
| cmsg->cmsg_type = ipv6_pktinfo; |
| cmsg->cmsg_len = CMSG_LEN(sizeof(p->pktinfo)); |
| memcpy(CMSG_DATA(cmsg), &p->pktinfo, sizeof(p->pktinfo)); |
| |
| msgh.msg_controllen = cmsg->cmsg_len; |
| |
| if (p->delay) { |
| #if HAVE_NANOSLEEP |
| struct timespec ts, rts; |
| int err = 0; |
| |
| rts.tv_sec = p->delay / 1000000; |
| rts.tv_nsec = (long)(p->delay % 1000000) * 1000; |
| |
| do { |
| ts = rts; |
| err = nanosleep(&ts, &rts); |
| } while(err < 0); |
| #else |
| usleep(p->delay); /*XXX: signal*/ |
| #endif |
| } |
| |
| cc = sendmsg(sock, &msgh, 0); |
| if (cc < 0) |
| DEBUG(LOG_DEBUG, "sendmsg(): %s\n", strerror(errno)); |
| |
| ni_free(p->replydata); |
| ni_free(p); |
| |
| return cc; |
| } |
| |
| /* --------- */ |
| static void sig_handler(int sig) |
| { |
| if (!got_signal) |
| DEBUG(LOG_INFO, "singnal(%d) received, quitting.\n", sig); |
| got_signal = 1; |
| } |
| |
| static void setup_sighandlers(void) |
| { |
| struct sigaction act; |
| sigset_t smask; |
| sigemptyset(&smask); |
| sigaddset(&smask, SIGHUP); |
| sigaddset(&smask, SIGINT); |
| sigaddset(&smask, SIGQUIT); |
| sigaddset(&smask, SIGTERM); |
| |
| memset(&act, 0, sizeof(act)); |
| act.sa_handler = sig_handler; |
| act.sa_mask = smask; |
| |
| sigaction(SIGHUP, &act, NULL); |
| sigaction(SIGINT, &act, NULL); |
| sigaction(SIGQUIT, &act, NULL); |
| sigaction(SIGTERM, &act, NULL); |
| } |
| |
| static void set_logfile(void) |
| { |
| setbuf(stderr, NULL); |
| #if ENABLE_DEBUG |
| openlog(NINFOD, 0, LOG_USER); |
| #endif |
| } |
| |
| static void cleanup_pidfile(void) |
| { |
| int err; |
| |
| if (daemonized && opt_p) { |
| err = unlink(opt_p); |
| DEBUG(LOG_ERR, "failed to unlink file '%s' : %s\n", |
| opt_p, strerror(errno)); |
| } |
| } |
| |
| static FILE *fopen_excl(const char *file) |
| { |
| #ifndef __linux__ |
| int fd; |
| FILE *fp; |
| |
| fd = open(file, O_CREAT | O_RDWR | O_EXCL, |
| S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); |
| if (fd < 0) |
| return NULL; |
| |
| return fdopen(file, "w+"); |
| #else |
| return fopen(file, "w+x"); |
| #endif |
| } |
| |
| static void do_daemonize(void) |
| { |
| FILE *fp = NULL; |
| pid_t pid; |
| |
| if (opt_p) { |
| if (!access(opt_p, R_OK)) { |
| if ((fp = fopen(opt_p, "r"))) { |
| if (fscanf(fp, "%d", &pid) != 1) { |
| DEBUG(LOG_ERR, "pid file '%s' exists, but read failed.\n", |
| opt_p); |
| } else { |
| DEBUG(LOG_ERR, "pid file '%s' exists : %d\n", |
| opt_p, pid); |
| } |
| fclose(fp); |
| exit(1); |
| } |
| } |
| |
| fp = fopen_excl(opt_p); |
| if (!fp) { |
| DEBUG(LOG_ERR, "failed to open file '%s': %s\n", |
| opt_p, strerror(errno)); |
| exit(1); |
| } |
| } |
| |
| if (daemon(0, 0) < 0) { |
| DEBUG(LOG_ERR, "failed to daemon(): %s\n", strerror(errno)); |
| unlink(opt_p); |
| exit(1); |
| } |
| daemonized = 1; |
| |
| if (fp) { |
| fprintf(fp, "%d\n", getpid()); |
| fclose(fp); |
| } |
| } |
| |
| /* --------- */ |
| #ifdef HAVE_LIBCAP |
| static const cap_value_t cap_net_raw = CAP_NET_RAW; |
| static const cap_value_t cap_setuid = CAP_SETUID; |
| static cap_flag_value_t cap_ok; |
| #else |
| static uid_t euid; |
| #endif |
| |
| static void limit_capabilities(void) |
| { |
| #ifdef HAVE_LIBCAP |
| cap_t cap_p, cap_cur_p; |
| |
| cap_p = cap_init(); |
| if (!cap_p) { |
| DEBUG(LOG_ERR, "cap_init: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| cap_cur_p = cap_get_proc(); |
| if (!cap_cur_p) { |
| DEBUG(LOG_ERR, "cap_get_proc: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| /* net_raw + setuid / net_raw */ |
| 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_net_raw, CAP_SET); |
| cap_set_flag(cap_p, CAP_EFFECTIVE, 1, &cap_net_raw, CAP_SET); |
| } |
| |
| cap_get_flag(cap_cur_p, CAP_SETUID, CAP_PERMITTED, &cap_ok); |
| if (cap_ok != CAP_CLEAR) |
| cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuid, CAP_SET); |
| |
| if (cap_set_proc(cap_p) < 0) { |
| DEBUG(LOG_ERR, "cap_set_proc: %s\n", strerror(errno)); |
| if (errno != EPERM) |
| exit(-1); |
| } |
| |
| if (prctl(PR_SET_KEEPCAPS, 1) < 0) { |
| DEBUG(LOG_ERR, "prctl: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| cap_free(cap_cur_p); |
| cap_free(cap_p); |
| #else |
| euid = geteuid(); |
| #endif |
| } |
| |
| static void drop_capabilities(void) |
| { |
| #ifdef HAVE_LIBCAP |
| cap_t cap_p; |
| |
| cap_p = cap_init(); |
| if (!cap_p) { |
| DEBUG(LOG_ERR, "cap_init: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| /* setuid / setuid */ |
| if (cap_ok != CAP_CLEAR) { |
| cap_set_flag(cap_p, CAP_PERMITTED, 1, &cap_setuid, CAP_SET); |
| cap_set_flag(cap_p, CAP_EFFECTIVE, 1, &cap_setuid, CAP_SET); |
| |
| if (cap_set_proc(cap_p) < 0) { |
| DEBUG(LOG_ERR, "cap_set_proc: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| } |
| |
| if (seteuid(opt_u ? opt_u : getuid()) < 0) { |
| DEBUG(LOG_ERR, "setuid: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| if (prctl(PR_SET_KEEPCAPS, 0) < 0) { |
| DEBUG(LOG_ERR, "prctl: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| cap_clear(cap_p); |
| if (cap_set_proc(cap_p) < 0) { |
| DEBUG(LOG_ERR, "cap_set_proc: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| |
| cap_free(cap_p); |
| #else |
| if (setuid(getuid()) < 0) { |
| DEBUG(LOG_ERR, "setuid: %s\n", strerror(errno)); |
| exit(-1); |
| } |
| #endif |
| } |
| |
| /* --------- */ |
| static void parse_args(int argc, char **argv) |
| { |
| int c; |
| unsigned long val; |
| char *ep; |
| |
| /* parse options */ |
| while ((c = getopt(argc, argv, "dhvp:u:")) != -1) { |
| switch(c) { |
| case 'd': /* debug */ |
| opt_d = 1; |
| break; |
| case 'v': /* verbose */ |
| opt_v = 1; |
| break; |
| case 'p': |
| opt_p = optarg; |
| break; |
| case 'u': |
| val = strtoul(optarg, &ep, 10); |
| if (!optarg || *ep) { |
| struct passwd *pw = getpwnam(optarg); |
| if (!pw) { |
| DEBUG(LOG_ERR, "No such user: %s", optarg); |
| exit(1); |
| } |
| opt_u = pw->pw_uid; |
| } else |
| opt_u = val; |
| break; |
| case 'h': /* help */ |
| default: |
| opt_h = 1; |
| break; |
| } |
| } |
| |
| argc -= optind; |
| #if 0 |
| argv += optind; |
| #endif |
| |
| if (argc) |
| opt_h = 1; |
| } |
| |
| static void print_copying(void) { |
| fprintf(stderr, |
| "Node Information Daemon\n" |
| "Copyright (C)2002 USAGI/WIDE Project. All Rights Reserved.\n" |
| "\n" |
| ); |
| } |
| |
| static void print_usage(void) { |
| fprintf(stderr, |
| "Usage: %s [-d] [-p pidfile] [-u user] [-h] [-v]\n\n", |
| appname |
| ); |
| } |
| |
| /* --------- */ |
| int main (int argc, char **argv) |
| { |
| int sock_errno = 0; |
| int ret; |
| |
| appname = argv[0]; |
| set_logfile(); |
| |
| limit_capabilities(); |
| |
| sock = open_sock(); |
| if (sock < 0) |
| sock_errno = errno; |
| |
| parse_args(argc, argv); |
| |
| drop_capabilities(); |
| |
| if (opt_h || opt_v) |
| print_copying(); |
| if (opt_h) { |
| print_usage(); |
| exit(1); |
| } |
| |
| if (sock_errno) { |
| DEBUG(LOG_ERR, "socket: %s\n", strerror(sock_errno)); |
| exit(1); |
| } |
| |
| /* initialize */ |
| if (init_sock(sock) < 0) |
| exit(1); |
| |
| setup_sighandlers(); |
| if (!opt_d) |
| do_daemonize(); |
| |
| init_core(1); |
| |
| /* main loop */ |
| while (!got_signal) { |
| struct packetcontext *p; |
| struct icmp6_hdr *icmph; |
| #if ENABLE_DEBUG |
| char saddrbuf[NI_MAXHOST]; |
| int gni; |
| #endif |
| |
| init_core(0); |
| |
| p = ni_malloc(sizeof(*p)); |
| if (!p) { |
| DEBUG(LOG_WARNING, "%s(): failed to allocate packet context; sleep 1 sec.\n", |
| __func__); |
| sleep(1); |
| continue; |
| } |
| |
| while (!got_signal) { |
| memset(p, 0, sizeof(*p)); |
| p->sock = sock; |
| |
| if (ni_recv(p) < 0) { |
| if (got_signal) |
| break; |
| if (errno == EAGAIN || errno == EINTR) |
| continue; |
| /* XXX: syslog */ |
| continue; |
| } |
| break; |
| } |
| |
| #if ENABLE_DEBUG |
| gni = getnameinfo((struct sockaddr *)&p->addr, |
| p->addrlen, |
| saddrbuf, sizeof(saddrbuf), |
| NULL, 0, |
| NI_NUMERICHOST); |
| if (gni) |
| sprintf(saddrbuf, "???"); |
| #endif |
| init_core(0); |
| |
| if (p->querylen < sizeof(struct icmp6_hdr)) { |
| ni_free(p); |
| DEBUG(LOG_WARNING, "Too short icmp message from %s\n", saddrbuf); |
| continue; |
| } |
| |
| icmph = (struct icmp6_hdr *)p->query; |
| |
| DEBUG(LOG_DEBUG, |
| "type=%d, code=%d, cksum=0x%04x\n", |
| icmph->icmp6_type, icmph->icmp6_code, |
| ntohs(icmph->icmp6_cksum)); |
| |
| if (icmph->icmp6_type != ICMP6_NI_QUERY) { |
| DEBUG(LOG_WARNING, |
| "Strange icmp type %d from %s\n", |
| icmph->icmp6_type, saddrbuf); |
| ni_free(p); |
| continue; |
| } |
| |
| pr_nodeinfo(p); /* this frees p */ |
| } |
| |
| cleanup_pidfile(); |
| |
| exit(0); |
| } |
| |