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 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 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 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 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 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 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 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 487 usage(int status) 488 { 489 arg_printusage(args, num_args, NULL, "master"); 490 exit(status); 491 } 492 493 int 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