2 * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include "login_locl.h"
39 login_access( struct passwd *user, char *from);
41 read_limits_conf(const char *file, const struct passwd *pwd);
43 #ifdef NEED_IRUSEROK_PROTO
44 int iruserok(uint32_t, int, const char *, const char *);
47 enum auth_method auth_method;
51 krb5_keyblock *keyblock;
56 krb5_ccache ccache, ccache2;
57 int kerberos_status = 0;
62 static int do_unique_tkfile = 0;
63 static char tkfile[MAXPATHLEN] = "";
65 static int do_inetd = 1;
66 static char *port_str;
67 static int do_rhosts = 1;
68 static int do_kerberos = 0;
70 static int do_vacuous = 0;
71 static int do_log = 1;
72 static int do_newpag = 1;
73 static int do_addr_verify = 0;
74 static int do_keepalive = 1;
75 static int do_version;
76 static int do_help = 0;
79 syslog_and_die (const char *m, ...)
80 __attribute__ ((format (printf, 1, 2)));
83 syslog_and_die (const char *m, ...)
88 vsyslog (LOG_ERR, m, args);
94 fatal (int, const char*, const char *, ...)
95 __attribute__ ((noreturn, format (printf, 3, 4)));
98 fatal (int sock, const char *what, const char *m, ...)
106 len = vsnprintf (buf + 1, sizeof(buf) - 1, m, args);
107 len = min(len, sizeof(buf) - 1);
110 syslog (LOG_ERR, "%s: %s: %s", what, strerror(errno), buf + 1);
112 syslog (LOG_ERR, "%s", buf + 1);
113 net_write (sock, buf, len + 1);
118 read_str (int s, size_t sz, char *expl)
120 char *str = malloc(sz);
123 fatal(s, NULL, "%s too long", expl);
124 while(p < str + sz) {
125 if(net_read(s, p, 1) != 1)
126 syslog_and_die("read: %s", strerror(errno));
131 fatal(s, NULL, "%s too long", expl);
135 recv_bsd_auth (int s, u_char *buf,
136 struct sockaddr_in *thisaddr,
137 struct sockaddr_in *thataddr,
138 char **client_username,
139 char **server_username,
144 *client_username = read_str (s, USERNAME_SZ, "local username");
145 *server_username = read_str (s, USERNAME_SZ, "remote username");
146 *cmd = read_str (s, ARG_MAX + 1, "command");
147 pwd = getpwnam(*server_username);
149 fatal(s, NULL, "Login incorrect.");
150 if (iruserok(thataddr->sin_addr.s_addr, pwd->pw_uid == 0,
151 *client_username, *server_username))
152 fatal(s, NULL, "Login incorrect.");
158 save_krb5_creds (int s,
159 krb5_auth_context auth_context,
160 krb5_principal client)
164 krb5_data remote_cred;
166 krb5_data_zero (&remote_cred);
167 ret= krb5_read_message (context, (void *)&s, &remote_cred);
169 krb5_data_free(&remote_cred);
172 if (remote_cred.length == 0)
175 ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, &ccache);
177 krb5_data_free(&remote_cred);
181 krb5_cc_initialize(context,ccache,client);
182 ret = krb5_rd_cred2(context, auth_context, ccache, &remote_cred);
184 syslog(LOG_INFO|LOG_AUTH,
185 "reading creds: %s", krb5_get_err_text(context, ret));
186 krb5_data_free (&remote_cred);
193 krb5_start_session (void)
198 ret = krb5_cc_resolve (context, tkfile, &ccache2);
200 estr = krb5_get_error_string(context);
201 syslog(LOG_WARNING, "resolve cred cache %s: %s",
203 estr ? estr : krb5_get_err_text(context, ret));
205 krb5_cc_destroy(context, ccache);
209 ret = krb5_cc_copy_cache (context, ccache, ccache2);
211 estr = krb5_get_error_string(context);
212 syslog(LOG_WARNING, "storing credentials: %s",
213 estr ? estr : krb5_get_err_text(context, ret));
215 krb5_cc_destroy(context, ccache);
219 krb5_cc_close(context, ccache2);
220 krb5_cc_destroy(context, ccache);
224 static int protocol_version;
227 match_kcmd_version(const void *data, const char *version)
229 if(strcmp(version, KCMD_NEW_VERSION) == 0) {
230 protocol_version = 2;
233 if(strcmp(version, KCMD_OLD_VERSION) == 0) {
234 protocol_version = 1;
235 key_usage = KRB5_KU_OTHER_ENCRYPTED;
243 recv_krb5_auth (int s, u_char *buf,
244 struct sockaddr *thisaddr,
245 struct sockaddr *thataddr,
246 char **client_username,
247 char **server_username,
251 krb5_auth_context auth_context = NULL;
253 krb5_error_code status;
254 krb5_data cksum_data;
255 krb5_principal server;
258 if (memcmp (buf, "\x00\x00\x00\x13", 4) != 0)
260 len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | (buf[3]);
262 if (net_read(s, buf, len) != len)
263 syslog_and_die ("reading auth info: %s", strerror(errno));
264 if (len != sizeof(KRB5_SENDAUTH_VERSION)
265 || memcmp (buf, KRB5_SENDAUTH_VERSION, len) != 0)
266 syslog_and_die ("bad sendauth version: %.8s", buf);
268 status = krb5_sock_to_principal (context,
274 syslog_and_die ("krb5_sock_to_principal: %s",
275 krb5_get_err_text(context, status));
277 status = krb5_recvauth_match_version(context,
283 KRB5_RECVAUTH_IGNORE_VERSION,
286 krb5_free_principal (context, server);
288 syslog_and_die ("krb5_recvauth: %s",
289 krb5_get_err_text(context, status));
291 *server_username = read_str (s, USERNAME_SZ, "remote username");
292 *cmd = read_str (s, ARG_MAX + 1, "command");
293 *client_username = read_str (s, ARG_MAX + 1, "local username");
295 if(protocol_version == 2) {
296 status = krb5_auth_con_getremotesubkey(context, auth_context,
298 if(status != 0 || keyblock == NULL)
299 syslog_and_die("failed to get remote subkey");
300 } else if(protocol_version == 1) {
301 status = krb5_auth_con_getkey (context, auth_context, &keyblock);
302 if(status != 0 || keyblock == NULL)
303 syslog_and_die("failed to get key");
305 if (status != 0 || keyblock == NULL)
306 syslog_and_die ("krb5_auth_con_getkey: %s",
307 krb5_get_err_text(context, status));
309 status = krb5_crypto_init(context, keyblock, 0, &crypto);
311 syslog_and_die("krb5_crypto_init: %s",
312 krb5_get_err_text(context, status));
315 cksum_data.length = asprintf (&str,
317 ntohs(socket_get_port (thisaddr)),
321 syslog_and_die ("asprintf: out of memory");
322 cksum_data.data = str;
324 status = krb5_verify_authenticator_checksum(context,
330 syslog_and_die ("krb5_verify_authenticator_checksum: %s",
331 krb5_get_err_text(context, status));
333 free (cksum_data.data);
335 if (strncmp (*client_username, "-u ", 3) == 0) {
336 do_unique_tkfile = 1;
337 memmove (*client_username, *client_username + 3,
338 strlen(*client_username) - 2);
341 if (strncmp (*client_username, "-U ", 3) == 0) {
342 char *end, *temp_tkfile;
344 do_unique_tkfile = 1;
345 if (strncmp (*client_username + 3, "FILE:", 5) == 0) {
346 temp_tkfile = tkfile;
348 strlcpy (tkfile, "FILE:", sizeof(tkfile));
349 temp_tkfile = tkfile + 5;
351 end = strchr(*client_username + 3,' ');
353 syslog_and_die("missing argument after -U");
354 snprintf(temp_tkfile, sizeof(tkfile) - (temp_tkfile - tkfile),
356 (int)(end - *client_username - 3),
357 *client_username + 3);
358 memmove (*client_username, end + 1, strlen(end+1)+1);
361 kerberos_status = save_krb5_creds (s, auth_context, ticket->client);
363 if(!krb5_kuserok (context,
366 fatal (s, NULL, "Permission denied.");
368 if (strncmp (*cmd, "-x ", 3) == 0) {
370 memmove (*cmd, *cmd + 3, strlen(*cmd) - 2);
373 fatal (s, NULL, "Encryption is required.");
380 if (krb5_unparse_name (context, ticket->client, &name) == 0) {
383 if (inet_ntop (thataddr->sa_family,
384 socket_get_address (thataddr),
385 addr_str, sizeof(addr_str)) == NULL)
386 strlcpy (addr_str, "unknown address",
389 syslog(LOG_INFO|LOG_AUTH,
390 "kerberos v5 shell from %s on %s as %s, cmd '%.80s'",
399 krb5_auth_con_free(context, auth_context);
406 rshd_loop (int from0, int to0,
416 if(from0 >= FD_SETSIZE || from1 >= FD_SETSIZE || from2 >= FD_SETSIZE)
417 errx (1, "fd too large");
420 if(auth_method == AUTH_KRB5 && protocol_version == 2)
421 init_ivecs(0, have_errsock);
424 FD_ZERO(&real_readset);
425 FD_SET(from0, &real_readset);
426 FD_SET(from1, &real_readset);
427 FD_SET(from2, &real_readset);
428 max_fd = max(from0, max(from1, from2)) + 1;
430 buf = malloc(max(RSHD_BUFSIZ, RSH_BUFSIZ));
432 syslog_and_die("out of memory");
436 fd_set readset = real_readset;
438 ret = select (max_fd, &readset, NULL, NULL, NULL);
443 syslog_and_die ("select: %s", strerror(errno));
445 if (FD_ISSET(from0, &readset)) {
446 ret = do_read (from0, buf, RSHD_BUFSIZ, ivec_in[0]);
448 syslog_and_die ("read: %s", strerror(errno));
452 FD_CLR(from0, &real_readset);
454 net_write (to0, buf, ret);
456 if (FD_ISSET(from1, &readset)) {
457 ret = read (from1, buf, RSH_BUFSIZ);
459 syslog_and_die ("read: %s", strerror(errno));
463 FD_CLR(from1, &real_readset);
467 do_write (to1, buf, ret, ivec_out[0]);
469 if (FD_ISSET(from2, &readset)) {
470 ret = read (from2, buf, RSH_BUFSIZ);
472 syslog_and_die ("read: %s", strerror(errno));
476 FD_CLR(from2, &real_readset);
480 do_write (to2, buf, ret, ivec_out[1]);
486 * Used by `setup_copier' to create some pipe-like means of
487 * communcation. Real pipes would probably be the best thing, but
488 * then the shell doesn't understand it's talking to rshd. If
489 * socketpair doesn't work everywhere, some autoconf magic would have
492 * If it fails creating the `pipe', it aborts by calling fatal.
496 pipe_a_like (int fd[2])
498 if (socketpair (AF_UNIX, SOCK_STREAM, 0, fd) < 0)
499 fatal (STDOUT_FILENO, "socketpair", "Pipe creation failed.");
503 * Start a child process and leave the parent copying data to and from it. */
506 setup_copier (int have_errsock)
508 int p0[2], p1[2], p2[2];
516 fatal (STDOUT_FILENO, "fork", "Could not create child process.");
517 if (pid == 0) { /* child */
521 dup2 (p0[0], STDIN_FILENO);
522 dup2 (p1[1], STDOUT_FILENO);
523 dup2 (p2[1], STDERR_FILENO);
527 } else { /* parent */
532 if (net_write (STDOUT_FILENO, "", 1) != 1)
533 fatal (STDOUT_FILENO, "net_write", "Write failure.");
535 rshd_loop (STDIN_FILENO, p0[1],
536 STDOUT_FILENO, p1[0],
537 STDERR_FILENO, p2[0],
543 * Is `port' a ``reserverd'' port?
547 is_reserved(u_short port)
549 return ntohs(port) < IPPORT_RESERVED;
553 * Set the necessary part of the environment in `env'.
557 setup_environment (char ***env, const struct passwd *pwd)
566 i = read_environment(_PATH_ETC_ENVIRONMENT, env);
568 for (j = 0; j < i; j++) {
569 if (!strncmp(e[j], "PATH=", 5)) {
575 e = realloc(e, (i + 7) * sizeof(char *));
577 if (asprintf (&e[i++], "USER=%s", pwd->pw_name) == -1)
578 syslog_and_die ("asprintf: out of memory");
579 if (asprintf (&e[i++], "HOME=%s", pwd->pw_dir) == -1)
580 syslog_and_die ("asprintf: out of memory");
581 if (asprintf (&e[i++], "SHELL=%s", pwd->pw_shell) == -1)
582 syslog_and_die ("asprintf: out of memory");
584 if (asprintf (&e[i++], "PATH=%s", _PATH_DEFPATH) == -1)
585 syslog_and_die ("asprintf: out of memory");
587 asprintf (&e[i++], "SSH_CLIENT=only_to_make_bash_happy");
588 if (do_unique_tkfile)
589 if (asprintf (&e[i++], "KRB5CCNAME=%s", tkfile) == -1)
590 syslog_and_die ("asprintf: out of memory");
600 struct sockaddr_storage thisaddr_ss;
601 struct sockaddr *thisaddr = (struct sockaddr *)&thisaddr_ss;
602 struct sockaddr_storage thataddr_ss;
603 struct sockaddr *thataddr = (struct sockaddr *)&thataddr_ss;
604 struct sockaddr_storage erraddr_ss;
605 struct sockaddr *erraddr = (struct sockaddr *)&erraddr_ss;
606 socklen_t thisaddr_len, thataddr_len;
609 char *client_user = NULL, *server_user = NULL, *cmd = NULL;
611 int s = STDIN_FILENO;
614 char that_host[NI_MAXHOST];
616 thisaddr_len = sizeof(thisaddr_ss);
617 if (getsockname (s, thisaddr, &thisaddr_len) < 0)
618 syslog_and_die("getsockname: %s", strerror(errno));
619 thataddr_len = sizeof(thataddr_ss);
620 if (getpeername (s, thataddr, &thataddr_len) < 0)
621 syslog_and_die ("getpeername: %s", strerror(errno));
623 /* check for V4MAPPED addresses? */
625 if (do_kerberos == 0 && !is_reserved(socket_get_port(thataddr)))
626 fatal(s, NULL, "Permission denied.");
631 if (net_read (s, p, 1) != 1)
632 syslog_and_die ("reading port number: %s", strerror(errno));
635 else if (isdigit(*p))
636 port = port * 10 + *p - '0';
638 syslog_and_die ("non-digit in port number: %c", *p);
641 if (do_kerberos == 0 && !is_reserved(htons(port)))
642 fatal(s, NULL, "Permission denied.");
645 int priv_port = IPPORT_RESERVED - 1;
648 * There's no reason to require a ``privileged'' port number
649 * here, but for some reason the brain dead rsh clients
653 erraddr->sa_family = thataddr->sa_family;
654 socket_set_address_and_port (erraddr,
655 socket_get_address (thataddr),
659 * we only do reserved port for IPv4
662 if (erraddr->sa_family == AF_INET)
663 errsock = rresvport (&priv_port);
665 errsock = socket (erraddr->sa_family, SOCK_STREAM, 0);
667 syslog_and_die ("socket: %s", strerror(errno));
668 if (connect (errsock,
670 socket_sockaddr_size (erraddr)) < 0) {
671 syslog (LOG_WARNING, "connect: %s", strerror(errno));
677 if (net_read (s, buf, 4) != 4)
678 syslog_and_die ("reading auth info: %s", strerror(errno));
681 if((do_kerberos & DO_KRB5) &&
682 recv_krb5_auth (s, buf, thisaddr, thataddr,
686 auth_method = AUTH_KRB5;
689 syslog_and_die ("unrecognized auth protocol: %x %x %x %x",
690 buf[0], buf[1], buf[2], buf[3]);
692 if(recv_bsd_auth (s, buf,
693 (struct sockaddr_in *)thisaddr,
694 (struct sockaddr_in *)thataddr,
698 auth_method = AUTH_BROKEN;
700 printf("Remote host requires Kerberos authentication\n");
704 syslog_and_die("recv_bsd_auth failed");
707 if (client_user == NULL || server_user == NULL || cmd == NULL)
708 syslog_and_die("mising client/server/cmd");
710 pwd = getpwnam (server_user);
712 fatal (s, NULL, "Login incorrect.");
714 if (*pwd->pw_shell == '\0')
715 pwd->pw_shell = _PATH_BSHELL;
717 if (pwd->pw_uid != 0 && access (_PATH_NOLOGIN, F_OK) == 0)
718 fatal (s, NULL, "Login disabled.");
721 ret = getnameinfo_verified (thataddr, thataddr_len,
722 that_host, sizeof(that_host),
725 fatal (s, NULL, "getnameinfo: %s", gai_strerror(ret));
727 if (login_access(pwd, that_host) == 0) {
728 syslog(LOG_NOTICE, "Kerberos rsh denied to %s from %s",
729 server_user, that_host);
730 fatal(s, NULL, "Permission denied.");
738 sp = getspnam(server_user);
740 today = time(0)/(24L * 60 * 60);
741 if (sp->sp_expire > 0)
742 if (today > sp->sp_expire)
743 fatal(s, NULL, "Account has expired.");
750 if (setlogin(pwd->pw_name) < 0)
751 syslog(LOG_ERR, "setlogin() failed: %s", strerror(errno));
755 if (setpcred (pwd->pw_name, NULL) == -1)
756 syslog(LOG_ERR, "setpcred() failure: %s", strerror(errno));
757 #endif /* HAVE_SETPCRED */
759 /* Apply limits if not root */
760 if(pwd->pw_uid != 0) {
761 const char *file = _PATH_LIMITS_CONF;
762 read_limits_conf(file, pwd);
765 if (initgroups (pwd->pw_name, pwd->pw_gid) < 0)
766 fatal (s, "initgroups", "Login incorrect.");
768 if (setgid(pwd->pw_gid) < 0)
769 fatal (s, "setgid", "Login incorrect.");
771 if (setuid (pwd->pw_uid) < 0)
772 fatal (s, "setuid", "Login incorrect.");
774 if (chdir (pwd->pw_dir) < 0)
775 fatal (s, "chdir", "Remote directory.");
778 if (dup2 (errsock, STDERR_FILENO) < 0)
779 fatal (s, "dup2", "Cannot dup stderr.");
782 if (dup2 (STDOUT_FILENO, STDERR_FILENO) < 0)
783 fatal (s, "dup2", "Cannot dup stderr.");
790 if (!do_unique_tkfile)
791 snprintf(tkfile,sizeof(tkfile),"FILE:/tmp/krb5cc_%lu",
792 (unsigned long)pwd->pw_uid);
793 else if (*tkfile=='\0') {
794 snprintf(tkfile,sizeof(tkfile),"FILE:/tmp/krb5cc_XXXXXX");
795 fd = mkstemp(tkfile+5);
801 krb5_start_session();
805 setup_environment (&env, pwd);
808 setup_copier (errsock >= 0);
810 if (net_write (s, "", 1) != 1)
811 fatal (s, "net_write", "write failed");
822 if (kerberos_status) {
824 krb5_error_code status;
826 status = krb5_cc_resolve (context, tkfile, &ccache);
828 if (k_afs_cell_of_file (pwd->pw_dir, cell, sizeof(cell)) == 0)
829 krb5_afslog_uid_home(context, ccache, cell, NULL,
830 pwd->pw_uid, pwd->pw_dir);
831 krb5_afslog_uid_home(context, ccache, NULL, NULL,
832 pwd->pw_uid, pwd->pw_dir);
833 krb5_cc_close (context, ccache);
838 execle (pwd->pw_shell, pwd->pw_shell, "-c", cmd, NULL, env);
839 err(1, "exec %s", pwd->pw_shell);
842 struct getargs args[] = {
843 { NULL, 'a', arg_flag, &do_addr_verify },
844 { "keepalive", 'n', arg_negative_flag, &do_keepalive },
845 { "inetd", 'i', arg_negative_flag, &do_inetd,
846 "Not started from inetd" },
848 { "kerberos", 'k', arg_flag, &do_kerberos,
849 "Implement kerberised services" },
850 { "encrypt", 'x', arg_flag, &do_encrypt,
851 "Implement encrypted service" },
853 { "rhosts", 'l', arg_negative_flag, &do_rhosts,
854 "Don't check users .rhosts" },
855 { "port", 'p', arg_string, &port_str, "Use this port",
857 { "vacuous", 'v', arg_flag, &do_vacuous,
858 "Don't accept non-kerberised connections" },
860 { NULL, 'P', arg_negative_flag, &do_newpag,
861 "Don't put process in new PAG" },
863 /* compatibility flag: */
864 { NULL, 'L', arg_flag, &do_log },
865 { "version", 0, arg_flag, &do_version },
866 { "help", 0, arg_flag, &do_help }
872 if(isatty(STDIN_FILENO))
873 arg_printusage (args,
874 sizeof(args) / sizeof(args[0]),
878 syslog (LOG_ERR, "Usage: %s [-ikxlvPL] [-p port]", getprogname());
884 main(int argc, char **argv)
889 setprogname (argv[0]);
890 roken_openlog ("rshd", LOG_ODELAY | LOG_PID, LOG_AUTH);
892 if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv,
909 do_kerberos = DO_KRB5;
913 if((do_kerberos & DO_KRB5) && krb5_init_context (&context) != 0)
914 do_kerberos &= ~DO_KRB5;
919 struct addrinfo *ai = NULL, hints;
920 char portstr[NI_MAXSERV];
922 memset (&hints, 0, sizeof(hints));
923 hints.ai_flags = AI_PASSIVE;
924 hints.ai_socktype = SOCK_STREAM;
925 hints.ai_family = PF_UNSPEC;
927 if(port_str != NULL) {
928 error = getaddrinfo (NULL, port_str, &hints, &ai);
930 errx (1, "getaddrinfo: %s", gai_strerror (error));
936 error = getaddrinfo(NULL, "ekshell", &hints, &ai);
937 if(error == EAI_NONAME) {
938 snprintf(portstr, sizeof(portstr), "%d", 545);
939 error = getaddrinfo(NULL, portstr, &hints, &ai);
942 errx (1, "getaddrinfo: %s", gai_strerror (error));
944 error = getaddrinfo(NULL, "kshell", &hints, &ai);
945 if(error == EAI_NONAME) {
946 snprintf(portstr, sizeof(portstr), "%d", 544);
947 error = getaddrinfo(NULL, portstr, &hints, &ai);
950 errx (1, "getaddrinfo: %s", gai_strerror (error));
955 error = getaddrinfo(NULL, "shell", &hints, &ai);
956 if(error == EAI_NONAME) {
957 snprintf(portstr, sizeof(portstr), "%d", 514);
958 error = getaddrinfo(NULL, portstr, &hints, &ai);
961 errx (1, "getaddrinfo: %s", gai_strerror (error));
964 mini_inetd_addrinfo (ai, NULL);
969 setsockopt(0, SOL_SOCKET, SO_KEEPALIVE, (char *)&on,
971 syslog(LOG_WARNING, "setsockopt (SO_KEEPALIVE): %s", strerror(errno));
975 signal (SIGPIPE, SIG_IGN);