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