1 /* $NetBSD: ipropd_slave.c,v 1.1.1.2 2014/04/24 12:45:48 pettai Exp $ */
2
3 /*
4 * Copyright (c) 1997 - 2008 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "iprop.h"
37
38 __RCSID("NetBSD");
39
40 static const char *config_name = "ipropd-slave";
41
42 static krb5_log_facility *log_facility;
43 static char five_min[] = "5 min";
44 static char *server_time_lost = five_min;
45 static int time_before_lost;
46 const char *slave_str = NULL;
47
48 static int
connect_to_master(krb5_context context,const char * master,const char * port_str)49 connect_to_master (krb5_context context, const char *master,
50 const char *port_str)
51 {
52 char port[NI_MAXSERV];
53 struct addrinfo *ai, *a;
54 struct addrinfo hints;
55 int error;
56 int s = -1;
57
58 memset (&hints, 0, sizeof(hints));
59 hints.ai_socktype = SOCK_STREAM;
60
61 if (port_str == NULL) {
62 snprintf(port, sizeof(port), "%u", IPROP_PORT);
63 port_str = port;
64 }
65
66 error = getaddrinfo (master, port_str, &hints, &ai);
67 if (error) {
68 krb5_warnx(context, "Failed to get address of to %s: %s",
69 master, gai_strerror(error));
70 return -1;
71 }
72
73 for (a = ai; a != NULL; a = a->ai_next) {
74 char node[NI_MAXHOST];
75 error = getnameinfo(a->ai_addr, a->ai_addrlen,
76 node, sizeof(node), NULL, 0, NI_NUMERICHOST);
77 if (error)
78 strlcpy(node, "[unknown-addr]", sizeof(node));
79
80 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
81 if (s < 0)
82 continue;
83 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
84 krb5_warn(context, errno, "connection failed to %s[%s]",
85 master, node);
86 close (s);
87 continue;
88 }
89 krb5_warnx(context, "connection successful "
90 "to master: %s[%s]", master, node);
91 break;
92 }
93 freeaddrinfo (ai);
94
95 if (a == NULL)
96 return -1;
97
98 return s;
99 }
100
101 static void
get_creds(krb5_context context,const char * keytab_str,krb5_ccache * cache,const char * serverhost)102 get_creds(krb5_context context, const char *keytab_str,
103 krb5_ccache *cache, const char *serverhost)
104 {
105 krb5_keytab keytab;
106 krb5_principal client;
107 krb5_error_code ret;
108 krb5_get_init_creds_opt *init_opts;
109 krb5_creds creds;
110 char *server;
111 char keytab_buf[256];
112
113 if (keytab_str == NULL) {
114 ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf));
115 if (ret)
116 krb5_err (context, 1, ret, "krb5_kt_default_name");
117 keytab_str = keytab_buf;
118 }
119
120 ret = krb5_kt_resolve(context, keytab_str, &keytab);
121 if(ret)
122 krb5_err(context, 1, ret, "%s", keytab_str);
123
124
125 ret = krb5_sname_to_principal (context, slave_str, IPROP_NAME,
126 KRB5_NT_SRV_HST, &client);
127 if (ret) krb5_err(context, 1, ret, "krb5_sname_to_principal");
128
129 ret = krb5_get_init_creds_opt_alloc(context, &init_opts);
130 if (ret) krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
131
132 asprintf (&server, "%s/%s", IPROP_NAME, serverhost);
133 if (server == NULL)
134 krb5_errx (context, 1, "malloc: no memory");
135
136 ret = krb5_get_init_creds_keytab(context, &creds, client, keytab,
137 0, server, init_opts);
138 free (server);
139 krb5_get_init_creds_opt_free(context, init_opts);
140 if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds");
141
142 ret = krb5_kt_close(context, keytab);
143 if(ret) krb5_err(context, 1, ret, "krb5_kt_close");
144
145 ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, cache);
146 if(ret) krb5_err(context, 1, ret, "krb5_cc_new_unique");
147
148 ret = krb5_cc_initialize(context, *cache, client);
149 if(ret) krb5_err(context, 1, ret, "krb5_cc_initialize");
150
151 ret = krb5_cc_store_cred(context, *cache, &creds);
152 if(ret) krb5_err(context, 1, ret, "krb5_cc_store_cred");
153
154 krb5_free_cred_contents(context, &creds);
155 krb5_free_principal(context, client);
156 }
157
158 static krb5_error_code
ihave(krb5_context context,krb5_auth_context auth_context,int fd,uint32_t version)159 ihave (krb5_context context, krb5_auth_context auth_context,
160 int fd, uint32_t version)
161 {
162 int ret;
163 u_char buf[8];
164 krb5_storage *sp;
165 krb5_data data;
166
167 sp = krb5_storage_from_mem (buf, 8);
168 krb5_store_int32 (sp, I_HAVE);
169 krb5_store_int32 (sp, version);
170 krb5_storage_free (sp);
171 data.length = 8;
172 data.data = buf;
173
174 ret = krb5_write_priv_message(context, auth_context, &fd, &data);
175 if (ret)
176 krb5_warn (context, ret, "krb5_write_message");
177 return ret;
178 }
179
180 static void
receive_loop(krb5_context context,krb5_storage * sp,kadm5_server_context * server_context)181 receive_loop (krb5_context context,
182 krb5_storage *sp,
183 kadm5_server_context *server_context)
184 {
185 int ret;
186 off_t left, right;
187 void *buf;
188 int32_t vers, vers2;
189 ssize_t sret;
190
191 /*
192 * Seek to the current version of the local database.
193 */
194 do {
195 int32_t len, timestamp, tmp;
196 enum kadm_ops op;
197
198 if(krb5_ret_int32 (sp, &vers) != 0)
199 return;
200 krb5_ret_int32 (sp, ×tamp);
201 krb5_ret_int32 (sp, &tmp);
202 op = tmp;
203 krb5_ret_int32 (sp, &len);
204 if ((uint32_t)vers <= server_context->log_context.version)
205 krb5_storage_seek(sp, len + 8, SEEK_CUR);
206 } while((uint32_t)vers <= server_context->log_context.version);
207
208 /*
209 * Read up rest of the entires into the memory...
210 */
211 left = krb5_storage_seek (sp, -16, SEEK_CUR);
212 right = krb5_storage_seek (sp, 0, SEEK_END);
213 buf = malloc (right - left);
214 if (buf == NULL && (right - left) != 0)
215 krb5_errx (context, 1, "malloc: no memory");
216
217 /*
218 * ...and then write them out to the on-disk log.
219 */
220 krb5_storage_seek (sp, left, SEEK_SET);
221 krb5_storage_read (sp, buf, right - left);
222 sret = write (server_context->log_context.log_fd, buf, right-left);
223 if (sret != right - left)
224 krb5_err(context, 1, errno, "Failed to write log to disk");
225 ret = fsync (server_context->log_context.log_fd);
226 if (ret)
227 krb5_err(context, 1, errno, "Failed to sync log to disk");
228 free (buf);
229
230 /*
231 * Go back to the startpoint and start to commit the entires to
232 * the database.
233 */
234 krb5_storage_seek (sp, left, SEEK_SET);
235
236 for(;;) {
237 int32_t len, len2, timestamp, tmp;
238 off_t cur, cur2;
239 enum kadm_ops op;
240
241 if(krb5_ret_int32 (sp, &vers) != 0)
242 break;
243 ret = krb5_ret_int32 (sp, ×tamp);
244 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
245 ret = krb5_ret_int32 (sp, &tmp);
246 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
247 op = tmp;
248 ret = krb5_ret_int32 (sp, &len);
249 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers);
250 if (len < 0)
251 krb5_errx(context, 1, "log is corrupted, "
252 "negative length of entry version %ld: %ld",
253 (long)vers, (long)len);
254 cur = krb5_storage_seek(sp, 0, SEEK_CUR);
255
256 krb5_warnx (context, "replaying entry %d", (int)vers);
257
258 ret = kadm5_log_replay (server_context,
259 op, vers, len, sp);
260 if (ret) {
261 const char *s = krb5_get_error_message(server_context->context, ret);
262 krb5_warnx (context,
263 "kadm5_log_replay: %ld. Lost entry entry, "
264 "Database out of sync ?: %s (%d)",
265 (long)vers, s ? s : "unknown error", ret);
266 krb5_free_error_message(context, s);
267 }
268
269 {
270 /*
271 * Make sure the krb5_log_replay does the right thing wrt
272 * reading out data from the sp.
273 */
274 cur2 = krb5_storage_seek(sp, 0, SEEK_CUR);
275 if (cur + len != cur2)
276 krb5_errx(context, 1,
277 "kadm5_log_reply version: %ld didn't read the whole entry",
278 (long)vers);
279 }
280
281 if (krb5_ret_int32 (sp, &len2) != 0)
282 krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
283 if(krb5_ret_int32 (sp, &vers2) != 0)
284 krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers);
285
286 if (len != len2)
287 krb5_errx(context, 1, "entry %ld: len != len2", (long)vers);
288 if (vers != vers2)
289 krb5_errx(context, 1, "entry %ld: vers != vers2", (long)vers);
290 }
291
292 /*
293 * Update version
294 */
295
296 server_context->log_context.version = vers;
297 }
298
299 static void
receive(krb5_context context,krb5_storage * sp,kadm5_server_context * server_context)300 receive (krb5_context context,
301 krb5_storage *sp,
302 kadm5_server_context *server_context)
303 {
304 int ret;
305
306 ret = server_context->db->hdb_open(context,
307 server_context->db,
308 O_RDWR | O_CREAT, 0600);
309 if (ret)
310 krb5_err (context, 1, ret, "db->open");
311
312 receive_loop (context, sp, server_context);
313
314 ret = server_context->db->hdb_close (context, server_context->db);
315 if (ret)
316 krb5_err (context, 1, ret, "db->close");
317 }
318
319 static void
send_im_here(krb5_context context,int fd,krb5_auth_context auth_context)320 send_im_here (krb5_context context, int fd,
321 krb5_auth_context auth_context)
322 {
323 krb5_storage *sp;
324 krb5_data data;
325 int ret;
326
327 ret = krb5_data_alloc (&data, 4);
328 if (ret)
329 krb5_err (context, 1, ret, "send_im_here");
330
331 sp = krb5_storage_from_data (&data);
332 if (sp == NULL)
333 krb5_errx (context, 1, "krb5_storage_from_data");
334 krb5_store_int32(sp, I_AM_HERE);
335 krb5_storage_free(sp);
336
337 ret = krb5_write_priv_message(context, auth_context, &fd, &data);
338 krb5_data_free(&data);
339
340 if (ret)
341 krb5_err (context, 1, ret, "krb5_write_priv_message");
342 }
343
344 static krb5_error_code
receive_everything(krb5_context context,int fd,kadm5_server_context * server_context,krb5_auth_context auth_context)345 receive_everything (krb5_context context, int fd,
346 kadm5_server_context *server_context,
347 krb5_auth_context auth_context)
348 {
349 int ret;
350 krb5_data data;
351 int32_t vno = 0;
352 int32_t opcode;
353 krb5_storage *sp;
354
355 char *dbname;
356 HDB *mydb;
357
358 krb5_warnx(context, "receive complete database");
359
360 asprintf(&dbname, "%s-NEW", server_context->db->hdb_name);
361 ret = hdb_create(context, &mydb, dbname);
362 if(ret)
363 krb5_err(context,1, ret, "hdb_create");
364 free(dbname);
365
366 ret = hdb_set_master_keyfile (context,
367 mydb, server_context->config.stash_file);
368 if(ret)
369 krb5_err(context,1, ret, "hdb_set_master_keyfile");
370
371 /* I really want to use O_EXCL here, but given that I can't easily clean
372 up on error, I won't */
373 ret = mydb->hdb_open(context, mydb, O_RDWR | O_CREAT | O_TRUNC, 0600);
374 if (ret)
375 krb5_err (context, 1, ret, "db->open");
376
377 sp = NULL;
378 do {
379 ret = krb5_read_priv_message(context, auth_context, &fd, &data);
380
381 if (ret) {
382 krb5_warn (context, ret, "krb5_read_priv_message");
383 goto cleanup;
384 }
385
386 sp = krb5_storage_from_data (&data);
387 if (sp == NULL)
388 krb5_errx (context, 1, "krb5_storage_from_data");
389 krb5_ret_int32 (sp, &opcode);
390 if (opcode == ONE_PRINC) {
391 krb5_data fake_data;
392 hdb_entry_ex entry;
393
394 krb5_storage_free(sp);
395
396 fake_data.data = (char *)data.data + 4;
397 fake_data.length = data.length - 4;
398
399 memset(&entry, 0, sizeof(entry));
400
401 ret = hdb_value2entry (context, &fake_data, &entry.entry);
402 if (ret)
403 krb5_err (context, 1, ret, "hdb_value2entry");
404 ret = mydb->hdb_store(server_context->context,
405 mydb,
406 0, &entry);
407 if (ret)
408 krb5_err (context, 1, ret, "hdb_store");
409
410 hdb_free_entry (context, &entry);
411 krb5_data_free (&data);
412 } else if (opcode == NOW_YOU_HAVE)
413 ;
414 else
415 krb5_errx (context, 1, "strange opcode %d", opcode);
416 } while (opcode == ONE_PRINC);
417
418 if (opcode != NOW_YOU_HAVE)
419 krb5_errx (context, 1, "receive_everything: strange %d", opcode);
420
421 krb5_ret_int32 (sp, &vno);
422 krb5_storage_free(sp);
423
424 ret = kadm5_log_reinit (server_context);
425 if (ret)
426 krb5_err(context, 1, ret, "kadm5_log_reinit");
427
428 ret = kadm5_log_set_version (server_context, vno - 1);
429 if (ret)
430 krb5_err (context, 1, ret, "kadm5_log_set_version");
431
432 ret = kadm5_log_nop (server_context);
433 if (ret)
434 krb5_err (context, 1, ret, "kadm5_log_nop");
435
436 ret = mydb->hdb_rename (context, mydb, server_context->db->hdb_name);
437 if (ret)
438 krb5_err (context, 1, ret, "db->rename");
439
440 cleanup:
441 krb5_data_free (&data);
442
443 ret = mydb->hdb_close (context, mydb);
444 if (ret)
445 krb5_err (context, 1, ret, "db->close");
446
447 ret = mydb->hdb_destroy (context, mydb);
448 if (ret)
449 krb5_err (context, 1, ret, "db->destroy");
450
451 krb5_warnx(context, "receive complete database, version %ld", (long)vno);
452 return ret;
453 }
454
455 static char *config_file;
456 static char *realm;
457 static int version_flag;
458 static int help_flag;
459 static char *keytab_str;
460 static char *port_str;
461 #ifdef SUPPORT_DETACH
462 static int detach_from_console = 0;
463 #endif
464
465 static struct getargs args[] = {
466 { "config-file", 'c', arg_string, &config_file, NULL, NULL },
467 { "realm", 'r', arg_string, &realm, NULL, NULL },
468 { "keytab", 'k', arg_string, &keytab_str,
469 "keytab to get authentication from", "kspec" },
470 { "time-lost", 0, arg_string, &server_time_lost,
471 "time before server is considered lost", "time" },
472 { "port", 0, arg_string, &port_str,
473 "port ipropd-slave will connect to", "port"},
474 #ifdef SUPPORT_DETACH
475 { "detach", 0, arg_flag, &detach_from_console,
476 "detach from console", NULL },
477 #endif
478 { "hostname", 0, arg_string, rk_UNCONST(&slave_str),
479 "hostname of slave (if not same as hostname)", "hostname" },
480 { "version", 0, arg_flag, &version_flag, NULL, NULL },
481 { "help", 0, arg_flag, &help_flag, NULL, NULL }
482 };
483
484 static int num_args = sizeof(args) / sizeof(args[0]);
485
486 static void
usage(int status)487 usage(int status)
488 {
489 arg_printusage(args, num_args, NULL, "master");
490 exit(status);
491 }
492
493 int
main(int argc,char ** argv)494 main(int argc, char **argv)
495 {
496 krb5_error_code ret;
497 krb5_context context;
498 krb5_auth_context auth_context;
499 void *kadm_handle;
500 kadm5_server_context *server_context;
501 kadm5_config_params conf;
502 int master_fd;
503 krb5_ccache ccache;
504 krb5_principal server;
505 char **files;
506 int optidx = 0;
507 time_t reconnect_min;
508 time_t backoff;
509 time_t reconnect_max;
510 time_t reconnect;
511 time_t before = 0;
512
513 const char *master;
514
515 setprogname(argv[0]);
516
517 if(getarg(args, num_args, argc, argv, &optidx))
518 usage(1);
519
520 if(help_flag)
521 usage(0);
522 if(version_flag) {
523 print_version(NULL);
524 exit(0);
525 }
526
527 ret = krb5_init_context(&context);
528 if (ret)
529 errx (1, "krb5_init_context failed: %d", ret);
530
531 setup_signal();
532
533 if (config_file == NULL) {
534 if (asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)) == -1
535 || config_file == NULL)
536 errx(1, "out of memory");
537 }
538
539 ret = krb5_prepend_config_files_default(config_file, &files);
540 if (ret)
541 krb5_err(context, 1, ret, "getting configuration files");
542
543 ret = krb5_set_config_files(context, files);
544 krb5_free_config_files(files);
545 if (ret)
546 krb5_err(context, 1, ret, "reading configuration files");
547
548 argc -= optidx;
549 argv += optidx;
550
551 if (argc != 1)
552 usage(1);
553
554 master = argv[0];
555
556 #ifdef SUPPORT_DETACH
557 if (detach_from_console)
558 daemon(0, 0);
559 #endif
560 pidfile (NULL);
561 krb5_openlog (context, "ipropd-slave", &log_facility);
562 krb5_set_warn_dest(context, log_facility);
563
564 ret = krb5_kt_register(context, &hdb_kt_ops);
565 if(ret)
566 krb5_err(context, 1, ret, "krb5_kt_register");
567
568 time_before_lost = parse_time (server_time_lost, "s");
569 if (time_before_lost < 0)
570 krb5_errx (context, 1, "couldn't parse time: %s", server_time_lost);
571
572 memset(&conf, 0, sizeof(conf));
573 if(realm) {
574 conf.mask |= KADM5_CONFIG_REALM;
575 conf.realm = realm;
576 }
577 ret = kadm5_init_with_password_ctx (context,
578 KADM5_ADMIN_SERVICE,
579 NULL,
580 KADM5_ADMIN_SERVICE,
581 &conf, 0, 0,
582 &kadm_handle);
583 if (ret)
584 krb5_err (context, 1, ret, "kadm5_init_with_password_ctx");
585
586 server_context = (kadm5_server_context *)kadm_handle;
587
588 ret = kadm5_log_init (server_context);
589 if (ret)
590 krb5_err (context, 1, ret, "kadm5_log_init");
591
592 get_creds(context, keytab_str, &ccache, master);
593
594 ret = krb5_sname_to_principal (context, master, IPROP_NAME,
595 KRB5_NT_SRV_HST, &server);
596 if (ret)
597 krb5_err (context, 1, ret, "krb5_sname_to_principal");
598
599 auth_context = NULL;
600 master_fd = -1;
601
602 krb5_appdefault_time(context, config_name, NULL, "reconnect-min",
603 10, &reconnect_min);
604 krb5_appdefault_time(context, config_name, NULL, "reconnect-max",
605 300, &reconnect_max);
606 krb5_appdefault_time(context, config_name, NULL, "reconnect-backoff",
607 10, &backoff);
608 reconnect = reconnect_min;
609
610 while (!exit_flag) {
611 time_t now, elapsed;
612 int connected = FALSE;
613
614 now = time(NULL);
615 elapsed = now - before;
616
617 if (elapsed < reconnect) {
618 time_t left = reconnect - elapsed;
619 krb5_warnx(context, "sleeping %d seconds before "
620 "retrying to connect", (int)left);
621 sleep(left);
622 }
623 before = now;
624
625 master_fd = connect_to_master (context, master, port_str);
626 if (master_fd < 0)
627 goto retry;
628
629 reconnect = reconnect_min;
630
631 if (auth_context) {
632 krb5_auth_con_free(context, auth_context);
633 auth_context = NULL;
634 krb5_cc_destroy(context, ccache);
635 get_creds(context, keytab_str, &ccache, master);
636 }
637 ret = krb5_sendauth (context, &auth_context, &master_fd,
638 IPROP_VERSION, NULL, server,
639 AP_OPTS_MUTUAL_REQUIRED, NULL, NULL,
640 ccache, NULL, NULL, NULL);
641 if (ret) {
642 krb5_warn (context, ret, "krb5_sendauth");
643 goto retry;
644 }
645
646 krb5_warnx(context, "ipropd-slave started at version: %ld",
647 (long)server_context->log_context.version);
648
649 ret = ihave (context, auth_context, master_fd,
650 server_context->log_context.version);
651 if (ret)
652 goto retry;
653
654 connected = TRUE;
655
656 while (connected && !exit_flag) {
657 krb5_data out;
658 krb5_storage *sp;
659 int32_t tmp;
660 fd_set readset;
661 struct timeval to;
662
663 #ifndef NO_LIMIT_FD_SETSIZE
664 if (master_fd >= FD_SETSIZE)
665 krb5_errx (context, 1, "fd too large");
666 #endif
667
668 FD_ZERO(&readset);
669 FD_SET(master_fd, &readset);
670
671 to.tv_sec = time_before_lost;
672 to.tv_usec = 0;
673
674 ret = select (master_fd + 1,
675 &readset, NULL, NULL, &to);
676 if (ret < 0) {
677 if (errno == EINTR)
678 continue;
679 else
680 krb5_err (context, 1, errno, "select");
681 }
682 if (ret == 0)
683 krb5_errx (context, 1, "server didn't send a message "
684 "in %d seconds", time_before_lost);
685
686 ret = krb5_read_priv_message(context, auth_context, &master_fd, &out);
687 if (ret) {
688 krb5_warn (context, ret, "krb5_read_priv_message");
689 connected = FALSE;
690 continue;
691 }
692
693 sp = krb5_storage_from_mem (out.data, out.length);
694 krb5_ret_int32 (sp, &tmp);
695 switch (tmp) {
696 case FOR_YOU :
697 receive (context, sp, server_context);
698 ret = ihave (context, auth_context, master_fd,
699 server_context->log_context.version);
700 if (ret)
701 connected = FALSE;
702 break;
703 case TELL_YOU_EVERYTHING :
704 ret = receive_everything (context, master_fd, server_context,
705 auth_context);
706 if (ret)
707 connected = FALSE;
708 break;
709 case ARE_YOU_THERE :
710 send_im_here (context, master_fd, auth_context);
711 break;
712 case NOW_YOU_HAVE :
713 case I_HAVE :
714 case ONE_PRINC :
715 case I_AM_HERE :
716 default :
717 krb5_warnx (context, "Ignoring command %d", tmp);
718 break;
719 }
720 krb5_storage_free (sp);
721 krb5_data_free (&out);
722
723 }
724 retry:
725 if (connected == FALSE)
726 krb5_warnx (context, "disconnected for server");
727 if (exit_flag)
728 krb5_warnx (context, "got an exit signal");
729
730 if (master_fd >= 0)
731 close(master_fd);
732
733 reconnect += backoff;
734 if (reconnect > reconnect_max)
735 reconnect = reconnect_max;
736 }
737
738 if (0);
739 #ifndef NO_SIGXCPU
740 else if(exit_flag == SIGXCPU)
741 krb5_warnx(context, "%s CPU time limit exceeded", getprogname());
742 #endif
743 else if(exit_flag == SIGINT || exit_flag == SIGTERM)
744 krb5_warnx(context, "%s terminated", getprogname());
745 else
746 krb5_warnx(context, "%s unexpected exit reason: %ld",
747 getprogname(), (long)exit_flag);
748
749 return 0;
750 }
751