diff options
Diffstat (limited to 'usr.sbin/faithd/faithd.c')
-rw-r--r-- | usr.sbin/faithd/faithd.c | 908 |
1 files changed, 0 insertions, 908 deletions
diff --git a/usr.sbin/faithd/faithd.c b/usr.sbin/faithd/faithd.c deleted file mode 100644 index 9caf0e9..0000000 --- a/usr.sbin/faithd/faithd.c +++ /dev/null @@ -1,908 +0,0 @@ -/* $KAME: faithd.c,v 1.67 2003/10/16 05:26:21 itojun Exp $ */ - -/* - * Copyright (C) 1997 and 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * User level translator from IPv6 to IPv4. - * - * Usage: faithd [<port> <progpath> <arg1(progname)> <arg2> ...] - * e.g. faithd telnet /usr/libexec/telnetd telnetd - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/sysctl.h> -#include <sys/socket.h> -#include <sys/wait.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/ioctl.h> -#include <libutil.h> - -#ifdef HAVE_POLL_H -#include <poll.h> -#endif -#include <stdio.h> -#include <stdlib.h> -#include <stdarg.h> -#include <string.h> -#include <syslog.h> -#include <unistd.h> -#include <errno.h> -#include <signal.h> -#include <fcntl.h> -#include <termios.h> - -#include <net/if_types.h> -#ifdef IFT_FAITH -# define USE_ROUTE -# include <net/if.h> -# include <net/route.h> -# include <net/if_dl.h> -#endif - -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <ifaddrs.h> - -#include "faithd.h" -#include "prefix.h" - -char *serverpath = NULL; -char *serverarg[MAXARGV + 1]; -static char *faithdname = NULL; -char logname[BUFSIZ]; -char procname[BUFSIZ]; - -struct myaddrs { - struct myaddrs *next; - struct sockaddr *addr; -}; -struct myaddrs *myaddrs = NULL; - -static const char *service; -#ifdef USE_ROUTE -static int sockfd = 0; -#endif -int dflag = 0; -static int pflag = 0; -static int inetd = 0; -static char *configfile = NULL; - -int main(int, char **); -static int inetd_main(int, char **); -static int daemon_main(int, char **); -static void play_service(int); -static void play_child(int, struct sockaddr *); -static int faith_prefix(struct sockaddr *); -static int map6to4(struct sockaddr_in6 *, struct sockaddr_in *); -static void sig_child(int); -static void sig_terminate(int); -static void start_daemon(void); -static void exit_stderr(const char *, ...) - __attribute__((__format__(__printf__, 1, 2))); -static void grab_myaddrs(void); -static void free_myaddrs(void); -static void update_myaddrs(void); -static void usage(void); - -int -main(int argc, char **argv) -{ - - /* - * Initializing stuff - */ - - faithdname = strrchr(argv[0], '/'); - if (faithdname) - faithdname++; - else - faithdname = argv[0]; - - if (strcmp(faithdname, "faithd") != 0) { - inetd = 1; - return inetd_main(argc, argv); - } else - return daemon_main(argc, argv); -} - -static int -inetd_main(int argc, char **argv) -{ - char path[MAXPATHLEN]; - struct sockaddr_storage me; - struct sockaddr_storage from; - socklen_t melen, fromlen; - int i; - int error; - const int on = 1; - char sbuf[NI_MAXSERV], snum[NI_MAXSERV]; - - if (config_load(configfile) < 0 && configfile) { - exit_failure("could not load config file"); - /*NOTREACHED*/ - } - - if (strrchr(argv[0], '/') == NULL) - snprintf(path, sizeof(path), "%s/%s", DEFAULT_DIR, argv[0]); - else - snprintf(path, sizeof(path), "%s", argv[0]); - -#ifdef USE_ROUTE - grab_myaddrs(); - - sockfd = socket(PF_ROUTE, SOCK_RAW, PF_UNSPEC); - if (sockfd < 0) { - exit_failure("socket(PF_ROUTE): %s", strerror(errno)); - /*NOTREACHED*/ - } -#endif - - melen = sizeof(me); - if (getsockname(STDIN_FILENO, (struct sockaddr *)&me, &melen) < 0) { - exit_failure("getsockname: %s", strerror(errno)); - /*NOTREACHED*/ - } - fromlen = sizeof(from); - if (getpeername(STDIN_FILENO, (struct sockaddr *)&from, &fromlen) < 0) { - exit_failure("getpeername: %s", strerror(errno)); - /*NOTREACHED*/ - } - if (getnameinfo((struct sockaddr *)&me, melen, NULL, 0, - sbuf, sizeof(sbuf), NI_NUMERICHOST) == 0) - service = sbuf; - else - service = DEFAULT_PORT_NAME; - if (getnameinfo((struct sockaddr *)&me, melen, NULL, 0, - snum, sizeof(snum), NI_NUMERICHOST) != 0) - snprintf(snum, sizeof(snum), "?"); - - snprintf(logname, sizeof(logname), "faithd %s", snum); - snprintf(procname, sizeof(procname), "accepting port %s", snum); - openlog(logname, LOG_PID | LOG_NOWAIT, LOG_DAEMON); - - if (argc >= MAXARGV) { - exit_failure("too many arguments"); - /*NOTREACHED*/ - } - serverarg[0] = serverpath = path; - for (i = 1; i < argc; i++) - serverarg[i] = argv[i]; - serverarg[i] = NULL; - - error = setsockopt(STDIN_FILENO, SOL_SOCKET, SO_OOBINLINE, &on, - sizeof(on)); - if (error < 0) { - exit_failure("setsockopt(SO_OOBINLINE): %s", strerror(errno)); - /*NOTREACHED*/ - } - - play_child(STDIN_FILENO, (struct sockaddr *)&from); - exit_failure("should not reach here"); - return 0; /*dummy!*/ -} - -static int -daemon_main(int argc, char **argv) -{ - struct addrinfo hints, *res; - int s_wld, error, i, serverargc, on = 1; - int family = AF_INET6; - int c; - - while ((c = getopt(argc, argv, "df:p")) != -1) { - switch (c) { - case 'd': - dflag++; - break; - case 'f': - configfile = optarg; - break; - case 'p': - pflag++; - break; - default: - usage(); - /*NOTREACHED*/ - } - } - argc -= optind; - argv += optind; - - if (config_load(configfile) < 0 && configfile) { - exit_failure("could not load config file"); - /*NOTREACHED*/ - } - - -#ifdef USE_ROUTE - grab_myaddrs(); -#endif - - switch (argc) { - case 0: - usage(); - /*NOTREACHED*/ - default: - serverargc = argc - NUMARG; - if (serverargc >= MAXARGV) - exit_stderr("too many arguments"); - - serverpath = strdup(argv[NUMPRG]); - if (!serverpath) - exit_stderr("not enough core"); - for (i = 0; i < serverargc; i++) { - serverarg[i] = strdup(argv[i + NUMARG]); - if (!serverarg[i]) - exit_stderr("not enough core"); - } - serverarg[i] = NULL; - /* fall throuth */ - case 1: /* no local service */ - service = argv[NUMPRT]; - break; - } - - start_daemon(); - - /* - * Opening wild card socket for this service. - */ - - memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_PASSIVE; - hints.ai_family = family; - hints.ai_socktype = SOCK_STREAM; - hints.ai_protocol = IPPROTO_TCP; /* SCTP? */ - error = getaddrinfo(NULL, service, &hints, &res); - if (error) - exit_failure("getaddrinfo: %s", gai_strerror(error)); - - s_wld = socket(res->ai_family, res->ai_socktype, res->ai_protocol); - if (s_wld == -1) - exit_failure("socket: %s", strerror(errno)); - -#ifdef IPV6_FAITH - if (res->ai_family == AF_INET6) { - error = setsockopt(s_wld, IPPROTO_IPV6, IPV6_FAITH, &on, sizeof(on)); - if (error == -1) - exit_failure("setsockopt(IPV6_FAITH): %s", - strerror(errno)); - } -#endif - - error = setsockopt(s_wld, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); - if (error == -1) - exit_failure("setsockopt(SO_REUSEADDR): %s", strerror(errno)); - - error = setsockopt(s_wld, SOL_SOCKET, SO_OOBINLINE, &on, sizeof(on)); - if (error == -1) - exit_failure("setsockopt(SO_OOBINLINE): %s", strerror(errno)); - -#ifdef IPV6_V6ONLY - error = setsockopt(s_wld, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)); - if (error == -1) - exit_failure("setsockopt(IPV6_V6ONLY): %s", strerror(errno)); -#endif - - error = bind(s_wld, (struct sockaddr *)res->ai_addr, res->ai_addrlen); - if (error == -1) - exit_failure("bind: %s", strerror(errno)); - - error = listen(s_wld, 5); - if (error == -1) - exit_failure("listen: %s", strerror(errno)); - -#ifdef USE_ROUTE - sockfd = socket(PF_ROUTE, SOCK_RAW, PF_UNSPEC); - if (sockfd < 0) { - exit_failure("socket(PF_ROUTE): %s", strerror(errno)); - /*NOTREACHED*/ - } -#endif - - /* - * Everything is OK. - */ - - snprintf(logname, sizeof(logname), "faithd %s", service); - snprintf(procname, sizeof(procname), "accepting port %s", service); - openlog(logname, LOG_PID | LOG_NOWAIT, LOG_DAEMON); - syslog(LOG_INFO, "Staring faith daemon for %s port", service); - - play_service(s_wld); - /* NOTREACHED */ - exit(1); /*pacify gcc*/ -} - -static void -play_service(int s_wld) -{ - struct sockaddr_storage srcaddr; - socklen_t len; - int s_src; - pid_t child_pid; -#ifdef HAVE_POLL_H - struct pollfd pfd[2]; -#else - fd_set rfds; - int maxfd; -#endif - int error; - - /* - * Wait, accept, fork, faith.... - */ -again: - setproctitle("%s", procname); - -#ifdef HAVE_POLL_H - pfd[0].fd = s_wld; - pfd[0].events = POLLIN; - pfd[1].fd = -1; - pfd[1].revents = 0; -#else - FD_ZERO(&rfds); - if (s_wld >= FD_SETSIZE) - exit_failure("descriptor too big"); - FD_SET(s_wld, &rfds); - maxfd = s_wld; -#endif -#ifdef USE_ROUTE - if (sockfd) { -#ifdef HAVE_POLL_H - pfd[1].fd = sockfd; - pfd[1].events = POLLIN; -#else - if (sockfd >= FD_SETSIZE) - exit_failure("descriptor too big"); - FD_SET(sockfd, &rfds); - maxfd = (maxfd < sockfd) ? sockfd : maxfd; -#endif - } -#endif - -#ifdef HAVE_POLL_H - error = poll(pfd, sizeof(pfd)/sizeof(pfd[0]), INFTIM); -#else - error = select(maxfd + 1, &rfds, NULL, NULL, NULL); -#endif - if (error < 0) { - if (errno == EINTR) - goto again; - exit_failure("select: %s", strerror(errno)); - /*NOTREACHED*/ - } - -#ifdef USE_ROUTE -#ifdef HAVE_POLL_H - if (pfd[1].revents & POLLIN) -#else - if (FD_ISSET(sockfd, &rfds)) -#endif - { - update_myaddrs(); - } -#endif -#ifdef HAVE_POLL_H - if (pfd[0].revents & POLLIN) -#else - if (FD_ISSET(s_wld, &rfds)) -#endif - { - len = sizeof(srcaddr); - s_src = accept(s_wld, (struct sockaddr *)&srcaddr, &len); - if (s_src < 0) { - if (errno == ECONNABORTED) - goto again; - exit_failure("socket: %s", strerror(errno)); - /*NOTREACHED*/ - } - if (srcaddr.ss_family == AF_INET6 && - IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&srcaddr)->sin6_addr)) { - close(s_src); - syslog(LOG_ERR, "connection from IPv4 mapped address?"); - goto again; - } - - child_pid = fork(); - - if (child_pid == 0) { - /* child process */ - close(s_wld); - closelog(); - openlog(logname, LOG_PID | LOG_NOWAIT, LOG_DAEMON); - play_child(s_src, (struct sockaddr *)&srcaddr); - exit_failure("should never reach here"); - /*NOTREACHED*/ - } else { - /* parent process */ - close(s_src); - if (child_pid == -1) - syslog(LOG_ERR, "can't fork"); - } - } - goto again; -} - -static void -play_child(int s_src, struct sockaddr *srcaddr) -{ - struct sockaddr_storage dstaddr6; - struct sockaddr_storage dstaddr4; - char src[NI_MAXHOST]; - char dst6[NI_MAXHOST]; - char dst4[NI_MAXHOST]; - socklen_t len = sizeof(dstaddr6); - int s_dst, error, hport, nresvport, on = 1; - struct timeval tv; - struct sockaddr *sa4; - const struct config *conf; - - tv.tv_sec = 1; - tv.tv_usec = 0; - - getnameinfo(srcaddr, srcaddr->sa_len, - src, sizeof(src), NULL, 0, NI_NUMERICHOST); - syslog(LOG_INFO, "accepted a client from %s", src); - - error = getsockname(s_src, (struct sockaddr *)&dstaddr6, &len); - if (error == -1) { - exit_failure("getsockname: %s", strerror(errno)); - /*NOTREACHED*/ - } - - getnameinfo((struct sockaddr *)&dstaddr6, len, - dst6, sizeof(dst6), NULL, 0, NI_NUMERICHOST); - syslog(LOG_INFO, "the client is connecting to %s", dst6); - - if (!faith_prefix((struct sockaddr *)&dstaddr6)) { - if (serverpath) { - /* - * Local service - */ - syslog(LOG_INFO, "executing local %s", serverpath); - if (!inetd) { - dup2(s_src, 0); - close(s_src); - dup2(0, 1); - dup2(0, 2); - } - execv(serverpath, serverarg); - syslog(LOG_ERR, "execv %s: %s", serverpath, - strerror(errno)); - _exit(EXIT_FAILURE); - } else { - close(s_src); - exit_success("no local service for %s", service); - } - } - - /* - * Act as a translator - */ - - switch (((struct sockaddr *)&dstaddr6)->sa_family) { - case AF_INET6: - if (!map6to4((struct sockaddr_in6 *)&dstaddr6, - (struct sockaddr_in *)&dstaddr4)) { - close(s_src); - exit_failure("map6to4 failed"); - /*NOTREACHED*/ - } - syslog(LOG_INFO, "translating from v6 to v4"); - break; - default: - close(s_src); - exit_failure("family not supported"); - /*NOTREACHED*/ - } - - sa4 = (struct sockaddr *)&dstaddr4; - getnameinfo(sa4, sa4->sa_len, - dst4, sizeof(dst4), NULL, 0, NI_NUMERICHOST); - - conf = config_match(srcaddr, sa4); - if (!conf || !conf->permit) { - close(s_src); - if (conf) { - exit_failure("translation to %s not permitted for %s", - dst4, prefix_string(&conf->match)); - /*NOTREACHED*/ - } else { - exit_failure("translation to %s not permitted", dst4); - /*NOTREACHED*/ - } - } - - syslog(LOG_INFO, "the translator is connecting to %s", dst4); - - setproctitle("port %s, %s -> %s", service, src, dst4); - - if (sa4->sa_family == AF_INET6) - hport = ntohs(((struct sockaddr_in6 *)&dstaddr4)->sin6_port); - else /* AF_INET */ - hport = ntohs(((struct sockaddr_in *)&dstaddr4)->sin_port); - - if (pflag) - s_dst = rresvport_af(&nresvport, sa4->sa_family); - else - s_dst = socket(sa4->sa_family, SOCK_STREAM, 0); - if (s_dst < 0) { - exit_failure("socket: %s", strerror(errno)); - /*NOTREACHED*/ - } - - if (conf->src.a.ss_family) { - if (bind(s_dst, (const struct sockaddr *)&conf->src.a, - conf->src.a.ss_len) < 0) { - exit_failure("bind: %s", strerror(errno)); - /*NOTREACHED*/ - } - } - - error = setsockopt(s_dst, SOL_SOCKET, SO_OOBINLINE, &on, sizeof(on)); - if (error < 0) { - exit_failure("setsockopt(SO_OOBINLINE): %s", strerror(errno)); - /*NOTREACHED*/ - } - - error = setsockopt(s_src, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); - if (error < 0) { - exit_failure("setsockopt(SO_SNDTIMEO): %s", strerror(errno)); - /*NOTREACHED*/ - } - error = setsockopt(s_dst, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); - if (error < 0) { - exit_failure("setsockopt(SO_SNDTIMEO): %s", strerror(errno)); - /*NOTREACHED*/ - } - - error = connect(s_dst, sa4, sa4->sa_len); - if (error < 0) { - exit_failure("connect: %s", strerror(errno)); - /*NOTREACHED*/ - } - - switch (hport) { - case FTP_PORT: - ftp_relay(s_src, s_dst); - break; - default: - tcp_relay(s_src, s_dst, service); - break; - } - - /* NOTREACHED */ -} - -/* 0: non faith, 1: faith */ -static int -faith_prefix(struct sockaddr *dst) -{ -#ifndef USE_ROUTE - int mib[4], size; - struct in6_addr faith_prefix; - struct sockaddr_in6 *dst6 = (struct sockaddr_in *)dst; - - if (dst->sa_family != AF_INET6) - return 0; - - mib[0] = CTL_NET; - mib[1] = PF_INET6; - mib[2] = IPPROTO_IPV6; - mib[3] = IPV6CTL_FAITH_PREFIX; - size = sizeof(struct in6_addr); - if (sysctl(mib, 4, &faith_prefix, &size, NULL, 0) < 0) { - exit_failure("sysctl: %s", strerror(errno)); - /*NOTREACHED*/ - } - - if (memcmp(dst, &faith_prefix, - sizeof(struct in6_addr) - sizeof(struct in_addr) == 0) { - return 1; - } - return 0; -#else - struct myaddrs *p; - struct sockaddr_in6 *sin6; - struct sockaddr_in *sin4; - struct sockaddr_in6 *dst6; - struct sockaddr_in *dst4; - struct sockaddr_in dstmap; - - dst6 = (struct sockaddr_in6 *)dst; - if (dst->sa_family == AF_INET6 - && IN6_IS_ADDR_V4MAPPED(&dst6->sin6_addr)) { - /* ugly... */ - memset(&dstmap, 0, sizeof(dstmap)); - dstmap.sin_family = AF_INET; - dstmap.sin_len = sizeof(dstmap); - memcpy(&dstmap.sin_addr, &dst6->sin6_addr.s6_addr[12], - sizeof(dstmap.sin_addr)); - dst = (struct sockaddr *)&dstmap; - } - - dst6 = (struct sockaddr_in6 *)dst; - dst4 = (struct sockaddr_in *)dst; - - for (p = myaddrs; p; p = p->next) { - sin6 = (struct sockaddr_in6 *)p->addr; - sin4 = (struct sockaddr_in *)p->addr; - - if (p->addr->sa_len != dst->sa_len - || p->addr->sa_family != dst->sa_family) - continue; - - switch (dst->sa_family) { - case AF_INET6: - if (sin6->sin6_scope_id == dst6->sin6_scope_id - && IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, &dst6->sin6_addr)) - return 0; - break; - case AF_INET: - if (sin4->sin_addr.s_addr == dst4->sin_addr.s_addr) - return 0; - break; - } - } - return 1; -#endif -} - -/* 0: non faith, 1: faith */ -static int -map6to4(struct sockaddr_in6 *dst6, struct sockaddr_in *dst4) -{ - memset(dst4, 0, sizeof(*dst4)); - dst4->sin_len = sizeof(*dst4); - dst4->sin_family = AF_INET; - dst4->sin_port = dst6->sin6_port; - memcpy(&dst4->sin_addr, &dst6->sin6_addr.s6_addr[12], - sizeof(dst4->sin_addr)); - - if (dst4->sin_addr.s_addr == INADDR_ANY - || dst4->sin_addr.s_addr == INADDR_BROADCAST - || IN_MULTICAST(ntohl(dst4->sin_addr.s_addr))) - return 0; - - return 1; -} - - -static void -sig_child(int sig __unused) -{ - int status; - pid_t pid; - - while ((pid = wait3(&status, WNOHANG, (struct rusage *)0)) > 0) - if (WEXITSTATUS(status)) - syslog(LOG_WARNING, "child %ld exit status 0x%x", - (long)pid, status); -} - -void -sig_terminate(int sig __unused) -{ - syslog(LOG_INFO, "Terminating faith daemon"); - exit(EXIT_SUCCESS); -} - -static void -start_daemon(void) -{ -#ifdef SA_NOCLDWAIT - struct sigaction sa; -#endif - - if (daemon(0, 0) == -1) - exit_stderr("daemon: %s", strerror(errno)); - -#ifdef SA_NOCLDWAIT - memset(&sa, 0, sizeof(sa)); - sa.sa_handler = sig_child; - sa.sa_flags = SA_NOCLDWAIT; - sigemptyset(&sa.sa_mask); - sigaction(SIGCHLD, &sa, (struct sigaction *)0); -#else - if (signal(SIGCHLD, sig_child) == SIG_ERR) { - exit_failure("signal CHLD: %s", strerror(errno)); - /*NOTREACHED*/ - } -#endif - - if (signal(SIGTERM, sig_terminate) == SIG_ERR) { - exit_failure("signal TERM: %s", strerror(errno)); - /*NOTREACHED*/ - } -} - -static void -exit_stderr(const char *fmt, ...) -{ - va_list ap; - char buf[BUFSIZ]; - - va_start(ap, fmt); - vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); - fprintf(stderr, "%s\n", buf); - exit(EXIT_FAILURE); -} - -void -exit_failure(const char *fmt, ...) -{ - va_list ap; - char buf[BUFSIZ]; - - va_start(ap, fmt); - vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); - syslog(LOG_ERR, "%s", buf); - exit(EXIT_FAILURE); -} - -void -exit_success(const char *fmt, ...) -{ - va_list ap; - char buf[BUFSIZ]; - - va_start(ap, fmt); - vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); - syslog(LOG_INFO, "%s", buf); - exit(EXIT_SUCCESS); -} - -#ifdef USE_ROUTE -static void -grab_myaddrs(void) -{ - struct ifaddrs *ifap, *ifa; - struct myaddrs *p; - struct sockaddr_in6 *sin6; - - if (getifaddrs(&ifap) != 0) { - exit_failure("getifaddrs"); - /*NOTREACHED*/ - } - - for (ifa = ifap; ifa; ifa = ifa->ifa_next) { - switch (ifa->ifa_addr->sa_family) { - case AF_INET: - case AF_INET6: - break; - default: - continue; - } - - p = (struct myaddrs *)malloc(sizeof(struct myaddrs) + - ifa->ifa_addr->sa_len); - if (!p) { - exit_failure("not enough core"); - /*NOTREACHED*/ - } - memcpy(p + 1, ifa->ifa_addr, ifa->ifa_addr->sa_len); - p->next = myaddrs; - p->addr = (struct sockaddr *)(p + 1); -#ifdef __KAME__ - if (ifa->ifa_addr->sa_family == AF_INET6) { - sin6 = (struct sockaddr_in6 *)p->addr; - if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) - || IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) { - sin6->sin6_scope_id = - ntohs(*(u_int16_t *)&sin6->sin6_addr.s6_addr[2]); - sin6->sin6_addr.s6_addr[2] = 0; - sin6->sin6_addr.s6_addr[3] = 0; - } - } -#endif - myaddrs = p; - if (dflag) { - char hbuf[NI_MAXHOST]; - getnameinfo(p->addr, p->addr->sa_len, - hbuf, sizeof(hbuf), NULL, 0, - NI_NUMERICHOST); - syslog(LOG_INFO, "my interface: %s %s", hbuf, - ifa->ifa_name); - } - } - - freeifaddrs(ifap); -} - -static void -free_myaddrs(void) -{ - struct myaddrs *p, *q; - - p = myaddrs; - while (p) { - q = p->next; - free(p); - p = q; - } - myaddrs = NULL; -} - -static void -update_myaddrs(void) -{ - char msg[BUFSIZ]; - int len; - struct rt_msghdr *rtm; - - len = read(sockfd, msg, sizeof(msg)); - if (len < 0) { - syslog(LOG_ERR, "read(PF_ROUTE) failed"); - return; - } - rtm = (struct rt_msghdr *)msg; - if (len < 4 || len < rtm->rtm_msglen) { - syslog(LOG_ERR, "read(PF_ROUTE) short read"); - return; - } - if (rtm->rtm_version != RTM_VERSION) { - syslog(LOG_ERR, "routing socket version mismatch"); - close(sockfd); - sockfd = 0; - return; - } - switch (rtm->rtm_type) { - case RTM_NEWADDR: - case RTM_DELADDR: - case RTM_IFINFO: - break; - default: - return; - } - /* XXX more filters here? */ - - syslog(LOG_INFO, "update interface address list"); - free_myaddrs(); - grab_myaddrs(); -} -#endif /*USE_ROUTE*/ - -static void -usage(void) -{ - fprintf(stderr, "usage: %s [-dp] [-f conf] service [serverpath [serverargs]]\n", - faithdname); - exit(0); -} |