1 /* $NetBSD: ipropd_slave.c,v 1.1.1.1 2011/04/13 18:15:30 elric 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: ipropd_slave.c,v 1.1.1.1 2011/04/13 18:15:30 elric Exp $"); 39 40 static const char *config_name = "ipropd-slave"; 41 42 static krb5_log_facility *log_facility; 43 static char *server_time_lost = "5 min"; 44 static int time_before_lost; 45 const char *slave_str = NULL; 46 47 static int 48 connect_to_master (krb5_context context, const char *master, 49 const char *port_str) 50 { 51 char port[NI_MAXSERV]; 52 struct addrinfo *ai, *a; 53 struct addrinfo hints; 54 int error; 55 int s = -1; 56 57 memset (&hints, 0, sizeof(hints)); 58 hints.ai_socktype = SOCK_STREAM; 59 60 if (port_str == NULL) { 61 snprintf(port, sizeof(port), "%u", IPROP_PORT); 62 port_str = port; 63 } 64 65 error = getaddrinfo (master, port_str, &hints, &ai); 66 if (error) { 67 krb5_warnx(context, "Failed to get address of to %s: %s", 68 master, gai_strerror(error)); 69 return -1; 70 } 71 72 for (a = ai; a != NULL; a = a->ai_next) { 73 char node[NI_MAXHOST]; 74 error = getnameinfo(a->ai_addr, a->ai_addrlen, 75 node, sizeof(node), NULL, 0, NI_NUMERICHOST); 76 if (error) 77 strlcpy(node, "[unknown-addr]", sizeof(node)); 78 79 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 80 if (s < 0) 81 continue; 82 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) { 83 krb5_warn(context, errno, "connection failed to %s[%s]", 84 master, node); 85 close (s); 86 continue; 87 } 88 krb5_warnx(context, "connection successful " 89 "to master: %s[%s]", master, node); 90 break; 91 } 92 freeaddrinfo (ai); 93 94 if (a == NULL) 95 return -1; 96 97 return s; 98 } 99 100 static void 101 get_creds(krb5_context context, const char *keytab_str, 102 krb5_ccache *cache, const char *serverhost) 103 { 104 krb5_keytab keytab; 105 krb5_principal client; 106 krb5_error_code ret; 107 krb5_get_init_creds_opt *init_opts; 108 krb5_creds creds; 109 char *server; 110 char keytab_buf[256]; 111 112 if (keytab_str == NULL) { 113 ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf)); 114 if (ret) 115 krb5_err (context, 1, ret, "krb5_kt_default_name"); 116 keytab_str = keytab_buf; 117 } 118 119 ret = krb5_kt_resolve(context, keytab_str, &keytab); 120 if(ret) 121 krb5_err(context, 1, ret, "%s", keytab_str); 122 123 124 ret = krb5_sname_to_principal (context, slave_str, IPROP_NAME, 125 KRB5_NT_SRV_HST, &client); 126 if (ret) krb5_err(context, 1, ret, "krb5_sname_to_principal"); 127 128 ret = krb5_get_init_creds_opt_alloc(context, &init_opts); 129 if (ret) krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc"); 130 131 asprintf (&server, "%s/%s", IPROP_NAME, serverhost); 132 if (server == NULL) 133 krb5_errx (context, 1, "malloc: no memory"); 134 135 ret = krb5_get_init_creds_keytab(context, &creds, client, keytab, 136 0, server, init_opts); 137 free (server); 138 krb5_get_init_creds_opt_free(context, init_opts); 139 if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds"); 140 141 ret = krb5_kt_close(context, keytab); 142 if(ret) krb5_err(context, 1, ret, "krb5_kt_close"); 143 144 ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, cache); 145 if(ret) krb5_err(context, 1, ret, "krb5_cc_new_unique"); 146 147 ret = krb5_cc_initialize(context, *cache, client); 148 if(ret) krb5_err(context, 1, ret, "krb5_cc_initialize"); 149 150 ret = krb5_cc_store_cred(context, *cache, &creds); 151 if(ret) krb5_err(context, 1, ret, "krb5_cc_store_cred"); 152 153 krb5_free_cred_contents(context, &creds); 154 krb5_free_principal(context, client); 155 } 156 157 static krb5_error_code 158 ihave (krb5_context context, krb5_auth_context auth_context, 159 int fd, uint32_t version) 160 { 161 int ret; 162 u_char buf[8]; 163 krb5_storage *sp; 164 krb5_data data; 165 166 sp = krb5_storage_from_mem (buf, 8); 167 krb5_store_int32 (sp, I_HAVE); 168 krb5_store_int32 (sp, version); 169 krb5_storage_free (sp); 170 data.length = 8; 171 data.data = buf; 172 173 ret = krb5_write_priv_message(context, auth_context, &fd, &data); 174 if (ret) 175 krb5_warn (context, ret, "krb5_write_message"); 176 return ret; 177 } 178 179 static void 180 receive_loop (krb5_context context, 181 krb5_storage *sp, 182 kadm5_server_context *server_context) 183 { 184 int ret; 185 off_t left, right; 186 void *buf; 187 int32_t vers, vers2; 188 ssize_t sret; 189 190 /* 191 * Seek to the current version of the local database. 192 */ 193 do { 194 int32_t len, timestamp, tmp; 195 enum kadm_ops op; 196 197 if(krb5_ret_int32 (sp, &vers) != 0) 198 return; 199 krb5_ret_int32 (sp, ×tamp); 200 krb5_ret_int32 (sp, &tmp); 201 op = tmp; 202 krb5_ret_int32 (sp, &len); 203 if (vers <= server_context->log_context.version) 204 krb5_storage_seek(sp, len + 8, SEEK_CUR); 205 } while(vers <= server_context->log_context.version); 206 207 /* 208 * Read up rest of the entires into the memory... 209 */ 210 left = krb5_storage_seek (sp, -16, SEEK_CUR); 211 right = krb5_storage_seek (sp, 0, SEEK_END); 212 buf = malloc (right - left); 213 if (buf == NULL && (right - left) != 0) 214 krb5_errx (context, 1, "malloc: no memory"); 215 216 /* 217 * ...and then write them out to the on-disk log. 218 */ 219 krb5_storage_seek (sp, left, SEEK_SET); 220 krb5_storage_read (sp, buf, right - left); 221 sret = write (server_context->log_context.log_fd, buf, right-left); 222 if (sret != right - left) 223 krb5_err(context, 1, errno, "Failed to write log to disk"); 224 ret = fsync (server_context->log_context.log_fd); 225 if (ret) 226 krb5_err(context, 1, errno, "Failed to sync log to disk"); 227 free (buf); 228 229 /* 230 * Go back to the startpoint and start to commit the entires to 231 * the database. 232 */ 233 krb5_storage_seek (sp, left, SEEK_SET); 234 235 for(;;) { 236 int32_t len, len2, timestamp, tmp; 237 off_t cur, cur2; 238 enum kadm_ops op; 239 240 if(krb5_ret_int32 (sp, &vers) != 0) 241 break; 242 ret = krb5_ret_int32 (sp, ×tamp); 243 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers); 244 ret = krb5_ret_int32 (sp, &tmp); 245 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers); 246 op = tmp; 247 ret = krb5_ret_int32 (sp, &len); 248 if (ret) krb5_errx(context, 1, "entry %ld: too short", (long)vers); 249 if (len < 0) 250 krb5_errx(context, 1, "log is corrupted, " 251 "negative length of entry version %ld: %ld", 252 (long)vers, (long)len); 253 cur = krb5_storage_seek(sp, 0, SEEK_CUR); 254 255 krb5_warnx (context, "replaying entry %d", (int)vers); 256 257 ret = kadm5_log_replay (server_context, 258 op, vers, len, sp); 259 if (ret) { 260 const char *s = krb5_get_error_message(server_context->context, ret); 261 krb5_warnx (context, 262 "kadm5_log_replay: %ld. Lost entry entry, " 263 "Database out of sync ?: %s (%d)", 264 (long)vers, s ? s : "unknown error", ret); 265 krb5_free_error_message(context, s); 266 } 267 268 { 269 /* 270 * Make sure the krb5_log_replay does the right thing wrt 271 * reading out data from the sp. 272 */ 273 cur2 = krb5_storage_seek(sp, 0, SEEK_CUR); 274 if (cur + len != cur2) 275 krb5_errx(context, 1, 276 "kadm5_log_reply version: %ld didn't read the whole entry", 277 (long)vers); 278 } 279 280 if (krb5_ret_int32 (sp, &len2) != 0) 281 krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers); 282 if(krb5_ret_int32 (sp, &vers2) != 0) 283 krb5_errx(context, 1, "entry %ld: postamble too short", (long)vers); 284 285 if (len != len2) 286 krb5_errx(context, 1, "entry %ld: len != len2", (long)vers); 287 if (vers != vers2) 288 krb5_errx(context, 1, "entry %ld: vers != vers2", (long)vers); 289 } 290 291 /* 292 * Update version 293 */ 294 295 server_context->log_context.version = vers; 296 } 297 298 static void 299 receive (krb5_context context, 300 krb5_storage *sp, 301 kadm5_server_context *server_context) 302 { 303 int ret; 304 305 ret = server_context->db->hdb_open(context, 306 server_context->db, 307 O_RDWR | O_CREAT, 0600); 308 if (ret) 309 krb5_err (context, 1, ret, "db->open"); 310 311 receive_loop (context, sp, server_context); 312 313 ret = server_context->db->hdb_close (context, server_context->db); 314 if (ret) 315 krb5_err (context, 1, ret, "db->close"); 316 } 317 318 static void 319 send_im_here (krb5_context context, int fd, 320 krb5_auth_context auth_context) 321 { 322 krb5_storage *sp; 323 krb5_data data; 324 int ret; 325 326 ret = krb5_data_alloc (&data, 4); 327 if (ret) 328 krb5_err (context, 1, ret, "send_im_here"); 329 330 sp = krb5_storage_from_data (&data); 331 if (sp == NULL) 332 krb5_errx (context, 1, "krb5_storage_from_data"); 333 krb5_store_int32(sp, I_AM_HERE); 334 krb5_storage_free(sp); 335 336 ret = krb5_write_priv_message(context, auth_context, &fd, &data); 337 krb5_data_free(&data); 338 339 if (ret) 340 krb5_err (context, 1, ret, "krb5_write_priv_message"); 341 } 342 343 static krb5_error_code 344 receive_everything (krb5_context context, int fd, 345 kadm5_server_context *server_context, 346 krb5_auth_context auth_context) 347 { 348 int ret; 349 krb5_data data; 350 int32_t vno = 0; 351 int32_t opcode; 352 krb5_storage *sp; 353 354 char *dbname; 355 HDB *mydb; 356 357 krb5_warnx(context, "receive complete database"); 358 359 asprintf(&dbname, "%s-NEW", server_context->db->hdb_name); 360 ret = hdb_create(context, &mydb, dbname); 361 if(ret) 362 krb5_err(context,1, ret, "hdb_create"); 363 free(dbname); 364 365 ret = hdb_set_master_keyfile (context, 366 mydb, server_context->config.stash_file); 367 if(ret) 368 krb5_err(context,1, ret, "hdb_set_master_keyfile"); 369 370 /* I really want to use O_EXCL here, but given that I can't easily clean 371 up on error, I won't */ 372 ret = mydb->hdb_open(context, mydb, O_RDWR | O_CREAT | O_TRUNC, 0600); 373 if (ret) 374 krb5_err (context, 1, ret, "db->open"); 375 376 sp = NULL; 377 do { 378 ret = krb5_read_priv_message(context, auth_context, &fd, &data); 379 380 if (ret) { 381 krb5_warn (context, ret, "krb5_read_priv_message"); 382 goto cleanup; 383 } 384 385 sp = krb5_storage_from_data (&data); 386 if (sp == NULL) 387 krb5_errx (context, 1, "krb5_storage_from_data"); 388 krb5_ret_int32 (sp, &opcode); 389 if (opcode == ONE_PRINC) { 390 krb5_data fake_data; 391 hdb_entry_ex entry; 392 393 krb5_storage_free(sp); 394 395 fake_data.data = (char *)data.data + 4; 396 fake_data.length = data.length - 4; 397 398 memset(&entry, 0, sizeof(entry)); 399 400 ret = hdb_value2entry (context, &fake_data, &entry.entry); 401 if (ret) 402 krb5_err (context, 1, ret, "hdb_value2entry"); 403 ret = mydb->hdb_store(server_context->context, 404 mydb, 405 0, &entry); 406 if (ret) 407 krb5_err (context, 1, ret, "hdb_store"); 408 409 hdb_free_entry (context, &entry); 410 krb5_data_free (&data); 411 } else if (opcode == NOW_YOU_HAVE) 412 ; 413 else 414 krb5_errx (context, 1, "strange opcode %d", opcode); 415 } while (opcode == ONE_PRINC); 416 417 if (opcode != NOW_YOU_HAVE) 418 krb5_errx (context, 1, "receive_everything: strange %d", opcode); 419 420 krb5_ret_int32 (sp, &vno); 421 krb5_storage_free(sp); 422 423 ret = kadm5_log_reinit (server_context); 424 if (ret) 425 krb5_err(context, 1, ret, "kadm5_log_reinit"); 426 427 ret = kadm5_log_set_version (server_context, vno - 1); 428 if (ret) 429 krb5_err (context, 1, ret, "kadm5_log_set_version"); 430 431 ret = kadm5_log_nop (server_context); 432 if (ret) 433 krb5_err (context, 1, ret, "kadm5_log_nop"); 434 435 ret = mydb->hdb_rename (context, mydb, server_context->db->hdb_name); 436 if (ret) 437 krb5_err (context, 1, ret, "db->rename"); 438 439 cleanup: 440 krb5_data_free (&data); 441 442 ret = mydb->hdb_close (context, mydb); 443 if (ret) 444 krb5_err (context, 1, ret, "db->close"); 445 446 ret = mydb->hdb_destroy (context, mydb); 447 if (ret) 448 krb5_err (context, 1, ret, "db->destroy"); 449 450 krb5_warnx(context, "receive complete database, version %ld", (long)vno); 451 return ret; 452 } 453 454 static char *config_file; 455 static char *realm; 456 static int version_flag; 457 static int help_flag; 458 static char *keytab_str; 459 static char *port_str; 460 #ifdef SUPPORT_DETACH 461 static int detach_from_console = 0; 462 #endif 463 464 static struct getargs args[] = { 465 { "config-file", 'c', arg_string, &config_file }, 466 { "realm", 'r', arg_string, &realm }, 467 { "keytab", 'k', arg_string, &keytab_str, 468 "keytab to get authentication from", "kspec" }, 469 { "time-lost", 0, arg_string, &server_time_lost, 470 "time before server is considered lost", "time" }, 471 { "port", 0, arg_string, &port_str, 472 "port ipropd-slave will connect to", "port"}, 473 #ifdef SUPPORT_DETACH 474 { "detach", 0, arg_flag, &detach_from_console, 475 "detach from console" }, 476 #endif 477 { "hostname", 0, arg_string, rk_UNCONST(&slave_str), 478 "hostname of slave (if not same as hostname)", "hostname" }, 479 { "version", 0, arg_flag, &version_flag }, 480 { "help", 0, arg_flag, &help_flag } 481 }; 482 483 static int num_args = sizeof(args) / sizeof(args[0]); 484 485 static void 486 usage(int status) 487 { 488 arg_printusage(args, num_args, NULL, "master"); 489 exit(status); 490 } 491 492 int 493 main(int argc, char **argv) 494 { 495 krb5_error_code ret; 496 krb5_context context; 497 krb5_auth_context auth_context; 498 void *kadm_handle; 499 kadm5_server_context *server_context; 500 kadm5_config_params conf; 501 int master_fd; 502 krb5_ccache ccache; 503 krb5_principal server; 504 char **files; 505 int optidx = 0; 506 time_t reconnect_min; 507 time_t backoff; 508 time_t reconnect_max; 509 time_t reconnect; 510 time_t before = 0; 511 512 const char *master; 513 514 setprogname(argv[0]); 515 516 if(getarg(args, num_args, argc, argv, &optidx)) 517 usage(1); 518 519 if(help_flag) 520 usage(0); 521 if(version_flag) { 522 print_version(NULL); 523 exit(0); 524 } 525 526 ret = krb5_init_context(&context); 527 if (ret) 528 errx (1, "krb5_init_context failed: %d", ret); 529 530 setup_signal(); 531 532 if (config_file == NULL) { 533 asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context)); 534 if (config_file == NULL) 535 errx(1, "out of memory"); 536 } 537 538 ret = krb5_prepend_config_files_default(config_file, &files); 539 if (ret) 540 krb5_err(context, 1, ret, "getting configuration files"); 541 542 ret = krb5_set_config_files(context, files); 543 krb5_free_config_files(files); 544 if (ret) 545 krb5_err(context, 1, ret, "reading configuration files"); 546 547 argc -= optidx; 548 argv += optidx; 549 550 if (argc != 1) 551 usage(1); 552 553 master = argv[0]; 554 555 #ifdef SUPPORT_DETACH 556 if (detach_from_console) 557 daemon(0, 0); 558 #endif 559 pidfile (NULL); 560 krb5_openlog (context, "ipropd-slave", &log_facility); 561 krb5_set_warn_dest(context, log_facility); 562 563 ret = krb5_kt_register(context, &hdb_kt_ops); 564 if(ret) 565 krb5_err(context, 1, ret, "krb5_kt_register"); 566 567 time_before_lost = parse_time (server_time_lost, "s"); 568 if (time_before_lost < 0) 569 krb5_errx (context, 1, "couldn't parse time: %s", server_time_lost); 570 571 memset(&conf, 0, sizeof(conf)); 572 if(realm) { 573 conf.mask |= KADM5_CONFIG_REALM; 574 conf.realm = realm; 575 } 576 ret = kadm5_init_with_password_ctx (context, 577 KADM5_ADMIN_SERVICE, 578 NULL, 579 KADM5_ADMIN_SERVICE, 580 &conf, 0, 0, 581 &kadm_handle); 582 if (ret) 583 krb5_err (context, 1, ret, "kadm5_init_with_password_ctx"); 584 585 server_context = (kadm5_server_context *)kadm_handle; 586 587 ret = kadm5_log_init (server_context); 588 if (ret) 589 krb5_err (context, 1, ret, "kadm5_log_init"); 590 591 get_creds(context, keytab_str, &ccache, master); 592 593 ret = krb5_sname_to_principal (context, master, IPROP_NAME, 594 KRB5_NT_SRV_HST, &server); 595 if (ret) 596 krb5_err (context, 1, ret, "krb5_sname_to_principal"); 597 598 auth_context = NULL; 599 master_fd = -1; 600 601 krb5_appdefault_time(context, config_name, NULL, "reconnect-min", 602 10, &reconnect_min); 603 krb5_appdefault_time(context, config_name, NULL, "reconnect-max", 604 300, &reconnect_max); 605 krb5_appdefault_time(context, config_name, NULL, "reconnect-backoff", 606 10, &backoff); 607 reconnect = reconnect_min; 608 609 while (!exit_flag) { 610 time_t now, elapsed; 611 int connected = FALSE; 612 613 now = time(NULL); 614 elapsed = now - before; 615 616 if (elapsed < reconnect) { 617 time_t left = reconnect - elapsed; 618 krb5_warnx(context, "sleeping %d seconds before " 619 "retrying to connect", (int)left); 620 sleep(left); 621 } 622 before = now; 623 624 master_fd = connect_to_master (context, master, port_str); 625 if (master_fd < 0) 626 goto retry; 627 628 reconnect = reconnect_min; 629 630 if (auth_context) { 631 krb5_auth_con_free(context, auth_context); 632 auth_context = NULL; 633 krb5_cc_destroy(context, ccache); 634 get_creds(context, keytab_str, &ccache, master); 635 } 636 ret = krb5_sendauth (context, &auth_context, &master_fd, 637 IPROP_VERSION, NULL, server, 638 AP_OPTS_MUTUAL_REQUIRED, NULL, NULL, 639 ccache, NULL, NULL, NULL); 640 if (ret) { 641 krb5_warn (context, ret, "krb5_sendauth"); 642 goto retry; 643 } 644 645 krb5_warnx(context, "ipropd-slave started at version: %ld", 646 (long)server_context->log_context.version); 647 648 ret = ihave (context, auth_context, master_fd, 649 server_context->log_context.version); 650 if (ret) 651 goto retry; 652 653 connected = TRUE; 654 655 while (connected && !exit_flag) { 656 krb5_data out; 657 krb5_storage *sp; 658 int32_t tmp; 659 fd_set readset; 660 struct timeval to; 661 662 #ifndef NO_LIMIT_FD_SETSIZE 663 if (master_fd >= FD_SETSIZE) 664 krb5_errx (context, 1, "fd too large"); 665 #endif 666 667 FD_ZERO(&readset); 668 FD_SET(master_fd, &readset); 669 670 to.tv_sec = time_before_lost; 671 to.tv_usec = 0; 672 673 ret = select (master_fd + 1, 674 &readset, NULL, NULL, &to); 675 if (ret < 0) { 676 if (errno == EINTR) 677 continue; 678 else 679 krb5_err (context, 1, errno, "select"); 680 } 681 if (ret == 0) 682 krb5_errx (context, 1, "server didn't send a message " 683 "in %d seconds", time_before_lost); 684 685 ret = krb5_read_priv_message(context, auth_context, &master_fd, &out); 686 if (ret) { 687 krb5_warn (context, ret, "krb5_read_priv_message"); 688 connected = FALSE; 689 continue; 690 } 691 692 sp = krb5_storage_from_mem (out.data, out.length); 693 krb5_ret_int32 (sp, &tmp); 694 switch (tmp) { 695 case FOR_YOU : 696 receive (context, sp, server_context); 697 ret = ihave (context, auth_context, master_fd, 698 server_context->log_context.version); 699 if (ret) 700 connected = FALSE; 701 break; 702 case TELL_YOU_EVERYTHING : 703 ret = receive_everything (context, master_fd, server_context, 704 auth_context); 705 if (ret) 706 connected = FALSE; 707 break; 708 case ARE_YOU_THERE : 709 send_im_here (context, master_fd, auth_context); 710 break; 711 case NOW_YOU_HAVE : 712 case I_HAVE : 713 case ONE_PRINC : 714 case I_AM_HERE : 715 default : 716 krb5_warnx (context, "Ignoring command %d", tmp); 717 break; 718 } 719 krb5_storage_free (sp); 720 krb5_data_free (&out); 721 722 } 723 retry: 724 if (connected == FALSE) 725 krb5_warnx (context, "disconnected for server"); 726 if (exit_flag) 727 krb5_warnx (context, "got an exit signal"); 728 729 if (master_fd >= 0) 730 close(master_fd); 731 732 reconnect += backoff; 733 if (reconnect > reconnect_max) 734 reconnect = reconnect_max; 735 } 736 737 if (0); 738 #ifndef NO_SIGXCPU 739 else if(exit_flag == SIGXCPU) 740 krb5_warnx(context, "%s CPU time limit exceeded", getprogname()); 741 #endif 742 else if(exit_flag == SIGINT || exit_flag == SIGTERM) 743 krb5_warnx(context, "%s terminated", getprogname()); 744 else 745 krb5_warnx(context, "%s unexpected exit reason: %ld", 746 getprogname(), (long)exit_flag); 747 748 return 0; 749 } 750