1 /* 2 * Copyright (c) 1997-2001 Kungliga Tekniska H�gskolan 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 "push_locl.h" 35 RCSID("$Id: push.c,v 1.45 2001/09/04 09:45:52 assar Exp $"); 36 37 #ifdef KRB4 38 static int use_v4 = -1; 39 #endif 40 41 #ifdef KRB5 42 static int use_v5 = -1; 43 static krb5_context context; 44 #endif 45 46 static char *port_str; 47 static int verbose_level; 48 static int do_fork; 49 static int do_leave; 50 static int do_version; 51 static int do_help; 52 static int do_from; 53 static int do_count; 54 static char *header_str; 55 56 struct getargs args[] = { 57 #ifdef KRB4 58 { "krb4", '4', arg_flag, &use_v4, "Use Kerberos V4", 59 NULL }, 60 #endif 61 #ifdef KRB5 62 { "krb5", '5', arg_flag, &use_v5, "Use Kerberos V5", 63 NULL }, 64 #endif 65 { "verbose",'v', arg_counter, &verbose_level, "Verbose", 66 NULL }, 67 { "fork", 'f', arg_flag, &do_fork, "Fork deleting proc", 68 NULL }, 69 { "leave", 'l', arg_flag, &do_leave, "Leave mail on server", 70 NULL }, 71 { "port", 'p', arg_string, &port_str, "Use this port", 72 "number-or-service" }, 73 { "from", 0, arg_flag, &do_from, "Behave like from", 74 NULL }, 75 { "headers", 0, arg_string, &header_str, "Headers to print", NULL }, 76 { "count", 'c', arg_flag, &do_count, "Print number of messages", NULL}, 77 { "version", 0, arg_flag, &do_version, "Print version", 78 NULL }, 79 { "help", 0, arg_flag, &do_help, NULL, 80 NULL } 81 82 }; 83 84 static void 85 usage (int ret) 86 { 87 arg_printusage (args, 88 sizeof(args) / sizeof(args[0]), 89 NULL, 90 "[[{po:username[@hostname] | hostname[:username]}] ...] " 91 "filename"); 92 exit (ret); 93 } 94 95 static int 96 do_connect (const char *hostname, int port, int nodelay) 97 { 98 struct addrinfo *ai, *a; 99 struct addrinfo hints; 100 int error; 101 int s = -1; 102 char portstr[NI_MAXSERV]; 103 104 memset (&hints, 0, sizeof(hints)); 105 hints.ai_socktype = SOCK_STREAM; 106 hints.ai_protocol = IPPROTO_TCP; 107 108 snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 109 110 error = getaddrinfo (hostname, portstr, &hints, &ai); 111 if (error) 112 errx (1, "getaddrinfo(%s): %s", hostname, gai_strerror(error)); 113 114 for (a = ai; a != NULL; a = a->ai_next) { 115 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 116 if (s < 0) 117 continue; 118 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) { 119 warn ("connect(%s)", hostname); 120 close (s); 121 continue; 122 } 123 break; 124 } 125 freeaddrinfo (ai); 126 if (a == NULL) { 127 warnx ("failed to contact %s", hostname); 128 return -1; 129 } 130 131 if(setsockopt(s, IPPROTO_TCP, TCP_NODELAY, 132 (void *)&nodelay, sizeof(nodelay)) < 0) 133 err (1, "setsockopt TCP_NODELAY"); 134 return s; 135 } 136 137 typedef enum { INIT = 0, GREET, USER, PASS, STAT, RETR, TOP, 138 DELE, XDELE, QUIT} pop_state; 139 140 #define PUSH_BUFSIZ 65536 141 142 #define STEP 16 143 144 struct write_state { 145 struct iovec *iovecs; 146 size_t niovecs, maxiovecs, allociovecs; 147 int fd; 148 }; 149 150 static void 151 write_state_init (struct write_state *w, int fd) 152 { 153 #ifdef UIO_MAXIOV 154 w->maxiovecs = UIO_MAXIOV; 155 #else 156 w->maxiovecs = 16; 157 #endif 158 w->allociovecs = min(STEP, w->maxiovecs); 159 w->niovecs = 0; 160 w->iovecs = emalloc(w->allociovecs * sizeof(*w->iovecs)); 161 w->fd = fd; 162 } 163 164 static void 165 write_state_add (struct write_state *w, void *v, size_t len) 166 { 167 if(w->niovecs == w->allociovecs) { 168 if(w->niovecs == w->maxiovecs) { 169 if(writev (w->fd, w->iovecs, w->niovecs) < 0) 170 err(1, "writev"); 171 w->niovecs = 0; 172 } else { 173 w->allociovecs = min(w->allociovecs + STEP, w->maxiovecs); 174 w->iovecs = erealloc (w->iovecs, 175 w->allociovecs * sizeof(*w->iovecs)); 176 } 177 } 178 w->iovecs[w->niovecs].iov_base = v; 179 w->iovecs[w->niovecs].iov_len = len; 180 ++w->niovecs; 181 } 182 183 static void 184 write_state_flush (struct write_state *w) 185 { 186 if (w->niovecs) { 187 if (writev (w->fd, w->iovecs, w->niovecs) < 0) 188 err (1, "writev"); 189 w->niovecs = 0; 190 } 191 } 192 193 static void 194 write_state_destroy (struct write_state *w) 195 { 196 free (w->iovecs); 197 } 198 199 static int 200 doit(int s, 201 const char *host, 202 const char *user, 203 const char *outfilename, 204 const char *header_str, 205 int leavep, 206 int verbose, 207 int forkp) 208 { 209 int ret; 210 char out_buf[PUSH_BUFSIZ]; 211 int out_len = 0; 212 char in_buf[PUSH_BUFSIZ + 1]; /* sentinel */ 213 size_t in_len = 0; 214 char *in_ptr = in_buf; 215 pop_state state = INIT; 216 unsigned count, bytes; 217 unsigned asked_for = 0, retrieved = 0, asked_deleted = 0, deleted = 0; 218 unsigned sent_xdele = 0; 219 int out_fd; 220 char from_line[128]; 221 size_t from_line_length; 222 time_t now; 223 struct write_state write_state; 224 int numheaders = 1; 225 char **headers = NULL; 226 int i; 227 char *tmp = NULL; 228 229 if (do_from) { 230 char *tmp2; 231 232 tmp2 = tmp = estrdup(header_str); 233 234 out_fd = -1; 235 if (verbose) 236 fprintf (stderr, "%s@%s\n", user, host); 237 while (*tmp != '\0') { 238 tmp = strchr(tmp, ','); 239 if (tmp == NULL) 240 break; 241 tmp++; 242 numheaders++; 243 } 244 245 headers = emalloc(sizeof(char *) * (numheaders + 1)); 246 for (i = 0; i < numheaders; i++) { 247 headers[i] = strtok_r(tmp2, ",", &tmp2); 248 } 249 headers[numheaders] = NULL; 250 } else { 251 out_fd = open(outfilename, O_WRONLY | O_APPEND | O_CREAT, 0666); 252 if (out_fd < 0) 253 err (1, "open %s", outfilename); 254 if (verbose) 255 fprintf (stderr, "%s@%s -> %s\n", user, host, outfilename); 256 } 257 258 now = time(NULL); 259 from_line_length = snprintf (from_line, sizeof(from_line), 260 "From %s %s", "push", ctime(&now)); 261 262 out_len = snprintf (out_buf, sizeof(out_buf), 263 "USER %s\r\nPASS hej\r\nSTAT\r\n", 264 user); 265 if (out_len < 0) 266 errx (1, "snprintf failed"); 267 if (net_write (s, out_buf, out_len) != out_len) 268 err (1, "write"); 269 if (verbose > 1) 270 write (STDERR_FILENO, out_buf, out_len); 271 272 if (!do_from) 273 write_state_init (&write_state, out_fd); 274 275 while(state != QUIT) { 276 fd_set readset, writeset; 277 278 FD_ZERO(&readset); 279 FD_ZERO(&writeset); 280 if (s >= FD_SETSIZE) 281 errx (1, "fd too large"); 282 FD_SET(s,&readset); 283 if (((state == STAT || state == RETR || state == TOP) 284 && asked_for < count) 285 || (state == XDELE && !sent_xdele) 286 || (state == DELE && asked_deleted < count)) 287 FD_SET(s,&writeset); 288 ret = select (s + 1, &readset, &writeset, NULL, NULL); 289 if (ret < 0) { 290 if (errno == EAGAIN) 291 continue; 292 else 293 err (1, "select"); 294 } 295 296 if (FD_ISSET(s, &readset)) { 297 char *beg, *p; 298 size_t rem; 299 int blank_line = 0; 300 301 ret = read (s, in_ptr, sizeof(in_buf) - in_len - 1); 302 if (ret < 0) 303 err (1, "read"); 304 else if (ret == 0) 305 errx (1, "EOF during read"); 306 307 in_len += ret; 308 in_ptr += ret; 309 *in_ptr = '\0'; 310 311 beg = in_buf; 312 rem = in_len; 313 while(rem > 1 314 && (p = strstr(beg, "\r\n")) != NULL) { 315 if (state == TOP) { 316 char *copy = beg; 317 318 for (i = 0; i < numheaders; i++) { 319 size_t len; 320 321 len = min(p - copy + 1, strlen(headers[i])); 322 if (strncasecmp(copy, headers[i], len) == 0) { 323 fprintf (stdout, "%.*s\n", (int)(p - copy), copy); 324 } 325 } 326 if (beg[0] == '.' && beg[1] == '\r' && beg[2] == '\n') { 327 if (numheaders > 1) 328 fprintf (stdout, "\n"); 329 state = STAT; 330 if (++retrieved == count) { 331 state = QUIT; 332 net_write (s, "QUIT\r\n", 6); 333 if (verbose > 1) 334 net_write (STDERR_FILENO, "QUIT\r\n", 6); 335 } 336 } 337 rem -= p - beg + 2; 338 beg = p + 2; 339 } else if (state == RETR) { 340 char *copy = beg; 341 if (beg[0] == '.') { 342 if (beg[1] == '\r' && beg[2] == '\n') { 343 if(!blank_line) 344 write_state_add(&write_state, "\n", 1); 345 state = STAT; 346 rem -= p - beg + 2; 347 beg = p + 2; 348 if (++retrieved == count) { 349 write_state_flush (&write_state); 350 if (fsync (out_fd) < 0) 351 err (1, "fsync"); 352 close(out_fd); 353 if (leavep) { 354 state = QUIT; 355 net_write (s, "QUIT\r\n", 6); 356 if (verbose > 1) 357 net_write (STDERR_FILENO, "QUIT\r\n", 6); 358 } else { 359 if (forkp) { 360 pid_t pid; 361 362 pid = fork(); 363 if (pid < 0) 364 warn ("fork"); 365 else if(pid != 0) { 366 if(verbose) 367 fprintf (stderr, 368 "(exiting)"); 369 return 0; 370 } 371 } 372 373 state = XDELE; 374 if (verbose) 375 fprintf (stderr, "deleting... "); 376 } 377 } 378 continue; 379 } else 380 ++copy; 381 } 382 *p = '\n'; 383 if(blank_line && 384 strncmp(copy, "From ", min(p - copy + 1, 5)) == 0) 385 write_state_add(&write_state, ">", 1); 386 write_state_add(&write_state, copy, p - copy + 1); 387 blank_line = (*copy == '\n'); 388 rem -= p - beg + 2; 389 beg = p + 2; 390 } else if (rem >= 3 && strncmp (beg, "+OK", 3) == 0) { 391 if (state == STAT) { 392 if (!do_from) 393 write_state_add(&write_state, 394 from_line, from_line_length); 395 blank_line = 0; 396 if (do_from) 397 state = TOP; 398 else 399 state = RETR; 400 } else if (state == XDELE) { 401 state = QUIT; 402 net_write (s, "QUIT\r\n", 6); 403 if (verbose > 1) 404 net_write (STDERR_FILENO, "QUIT\r\n", 6); 405 break; 406 } else if (state == DELE) { 407 if (++deleted == count) { 408 state = QUIT; 409 net_write (s, "QUIT\r\n", 6); 410 if (verbose > 1) 411 net_write (STDERR_FILENO, "QUIT\r\n", 6); 412 break; 413 } 414 } else if (++state == STAT) { 415 if(sscanf (beg + 4, "%u %u", &count, &bytes) != 2) 416 errx(1, "Bad STAT-line: %.*s", (int)(p - beg), beg); 417 if (verbose) { 418 fprintf (stderr, "%u message(s) (%u bytes). " 419 "fetching... ", 420 count, bytes); 421 if (do_from) 422 fprintf (stderr, "\n"); 423 } else if (do_count) { 424 fprintf (stderr, "%u message(s) (%u bytes).\n", 425 count, bytes); 426 } 427 if (count == 0) { 428 state = QUIT; 429 net_write (s, "QUIT\r\n", 6); 430 if (verbose > 1) 431 net_write (STDERR_FILENO, "QUIT\r\n", 6); 432 break; 433 } 434 } 435 436 rem -= p - beg + 2; 437 beg = p + 2; 438 } else { 439 if(state == XDELE) { 440 state = DELE; 441 rem -= p - beg + 2; 442 beg = p + 2; 443 } else 444 errx (1, "Bad response: %.*s", (int)(p - beg), beg); 445 } 446 } 447 if (!do_from) 448 write_state_flush (&write_state); 449 450 memmove (in_buf, beg, rem); 451 in_len = rem; 452 in_ptr = in_buf + rem; 453 } 454 if (FD_ISSET(s, &writeset)) { 455 if ((state == STAT && !do_from) || state == RETR) 456 out_len = snprintf (out_buf, sizeof(out_buf), 457 "RETR %u\r\n", ++asked_for); 458 else if ((state == STAT && do_from) || state == TOP) 459 out_len = snprintf (out_buf, sizeof(out_buf), 460 "TOP %u 0\r\n", ++asked_for); 461 else if(state == XDELE) { 462 out_len = snprintf(out_buf, sizeof(out_buf), 463 "XDELE %u %u\r\n", 1, count); 464 sent_xdele++; 465 } 466 else if(state == DELE) 467 out_len = snprintf (out_buf, sizeof(out_buf), 468 "DELE %u\r\n", ++asked_deleted); 469 if (out_len < 0) 470 errx (1, "snprintf failed"); 471 if (net_write (s, out_buf, out_len) != out_len) 472 err (1, "write"); 473 if (verbose > 1) 474 write (STDERR_FILENO, out_buf, out_len); 475 } 476 } 477 if (verbose) 478 fprintf (stderr, "Done\n"); 479 if (do_from) { 480 free (tmp); 481 free (headers); 482 } else { 483 write_state_destroy (&write_state); 484 } 485 return 0; 486 } 487 488 #ifdef KRB5 489 static int 490 do_v5 (const char *host, 491 int port, 492 const char *user, 493 const char *filename, 494 const char *header_str, 495 int leavep, 496 int verbose, 497 int forkp) 498 { 499 krb5_error_code ret; 500 krb5_auth_context auth_context = NULL; 501 krb5_principal server; 502 int s; 503 504 s = do_connect (host, port, 1); 505 if (s < 0) 506 return 1; 507 508 ret = krb5_sname_to_principal (context, 509 host, 510 "pop", 511 KRB5_NT_SRV_HST, 512 &server); 513 if (ret) { 514 warnx ("krb5_sname_to_principal: %s", 515 krb5_get_err_text (context, ret)); 516 return 1; 517 } 518 519 ret = krb5_sendauth (context, 520 &auth_context, 521 &s, 522 "KPOPV1.0", 523 NULL, 524 server, 525 0, 526 NULL, 527 NULL, 528 NULL, 529 NULL, 530 NULL, 531 NULL); 532 krb5_free_principal (context, server); 533 if (ret) { 534 warnx ("krb5_sendauth: %s", 535 krb5_get_err_text (context, ret)); 536 return 1; 537 } 538 return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 539 } 540 #endif 541 542 #ifdef KRB4 543 static int 544 do_v4 (const char *host, 545 int port, 546 const char *user, 547 const char *filename, 548 const char *header_str, 549 int leavep, 550 int verbose, 551 int forkp) 552 { 553 KTEXT_ST ticket; 554 MSG_DAT msg_data; 555 CREDENTIALS cred; 556 des_key_schedule sched; 557 int s; 558 int ret; 559 560 s = do_connect (host, port, 1); 561 if (s < 0) 562 return 1; 563 ret = krb_sendauth(0, 564 s, 565 &ticket, 566 "pop", 567 (char *)host, 568 krb_realmofhost(host), 569 getpid(), 570 &msg_data, 571 &cred, 572 sched, 573 NULL, 574 NULL, 575 "KPOPV0.1"); 576 if(ret) { 577 warnx("krb_sendauth: %s", krb_get_err_text(ret)); 578 return 1; 579 } 580 return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 581 } 582 #endif /* KRB4 */ 583 584 #ifdef HESIOD 585 586 #ifdef HESIOD_INTERFACES 587 588 static char * 589 hesiod_get_pobox (const char **user) 590 { 591 void *context; 592 struct hesiod_postoffice *hpo; 593 char *ret = NULL; 594 595 if(hesiod_init (&context) != 0) 596 err (1, "hesiod_init"); 597 598 hpo = hesiod_getmailhost (context, *user); 599 if (hpo == NULL) { 600 warn ("hesiod_getmailhost %s", *user); 601 } else { 602 if (strcasecmp(hpo->hesiod_po_type, "pop") != 0) 603 errx (1, "Unsupported po type %s", hpo->hesiod_po_type); 604 605 ret = estrdup(hpo->hesiod_po_host); 606 *user = estrdup(hpo->hesiod_po_name); 607 hesiod_free_postoffice (context, hpo); 608 } 609 hesiod_end (context); 610 return ret; 611 } 612 613 #else /* !HESIOD_INTERFACES */ 614 615 static char * 616 hesiod_get_pobox (const char **user) 617 { 618 char *ret = NULL; 619 struct hes_postoffice *hpo; 620 621 hpo = hes_getmailhost (*user); 622 if (hpo == NULL) { 623 warn ("hes_getmailhost %s", *user); 624 } else { 625 if (strcasecmp(hpo->po_type, "pop") != 0) 626 errx (1, "Unsupported po type %s", hpo->po_type); 627 628 ret = estrdup(hpo->po_host); 629 *user = estrdup(hpo->po_name); 630 } 631 return ret; 632 } 633 634 #endif /* HESIOD_INTERFACES */ 635 636 #endif /* HESIOD */ 637 638 static char * 639 get_pobox (const char **user) 640 { 641 char *ret = NULL; 642 643 #ifdef HESIOD 644 ret = hesiod_get_pobox (user); 645 #endif 646 647 if (ret == NULL) 648 ret = getenv("MAILHOST"); 649 if (ret == NULL) 650 errx (1, "MAILHOST not set"); 651 return ret; 652 } 653 654 static void 655 parse_pobox (char *a0, const char **host, const char **user) 656 { 657 const char *h, *u; 658 char *p; 659 int po = 0; 660 661 if (a0 == NULL) { 662 663 *user = getenv ("USERNAME"); 664 if (*user == NULL) { 665 struct passwd *pwd = getpwuid (getuid ()); 666 667 if (pwd == NULL) 668 errx (1, "Who are you?"); 669 *user = estrdup (pwd->pw_name); 670 } 671 *host = get_pobox (user); 672 return; 673 } 674 675 /* if the specification starts with po:, remember this information */ 676 if(strncmp(a0, "po:", 3) == 0) { 677 a0 += 3; 678 po++; 679 } 680 /* if there is an `@', the hostname is after it, otherwise at the 681 beginning of the string */ 682 p = strchr(a0, '@'); 683 if(p != NULL) { 684 *p++ = '\0'; 685 h = p; 686 } else { 687 h = a0; 688 } 689 /* if there is a `:', the username comes before it, otherwise at 690 the beginning of the string */ 691 p = strchr(a0, ':'); 692 if(p != NULL) { 693 *p++ = '\0'; 694 u = p; 695 } else { 696 u = a0; 697 } 698 if(h == u) { 699 /* some inconsistent compatibility with various mailers */ 700 if(po) { 701 h = get_pobox (&u); 702 } else { 703 u = get_default_username (); 704 if (u == NULL) 705 errx (1, "Who are you?"); 706 } 707 } 708 *host = h; 709 *user = u; 710 } 711 712 int 713 main(int argc, char **argv) 714 { 715 int port = 0; 716 int optind = 0; 717 int ret = 1; 718 const char *host, *user, *filename = NULL; 719 char *pobox = NULL; 720 721 setprogname (argv[0]); 722 723 #ifdef KRB5 724 { 725 krb5_error_code ret; 726 727 ret = krb5_init_context (&context); 728 if (ret) 729 errx (1, "krb5_init_context failed: %d", ret); 730 } 731 #endif 732 733 if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv, 734 &optind)) 735 usage (1); 736 737 argc -= optind; 738 argv += optind; 739 740 #if defined(KRB4) && defined(KRB5) 741 if(use_v4 == -1 && use_v5 == 1) 742 use_v4 = 0; 743 if(use_v5 == -1 && use_v4 == 1) 744 use_v5 = 0; 745 #endif 746 747 if (do_help) 748 usage (0); 749 750 if (do_version) { 751 print_version(NULL); 752 return 0; 753 } 754 755 if (do_from && header_str == NULL) 756 header_str = "From:"; 757 else if (header_str != NULL) 758 do_from = 1; 759 760 if (do_from) { 761 if (argc == 0) 762 pobox = NULL; 763 else if (argc == 1) 764 pobox = argv[0]; 765 else 766 usage (1); 767 } else { 768 if (argc == 1) { 769 filename = argv[0]; 770 pobox = NULL; 771 } else if (argc == 2) { 772 filename = argv[1]; 773 pobox = argv[0]; 774 } else 775 usage (1); 776 } 777 778 if (port_str) { 779 struct servent *s = roken_getservbyname (port_str, "tcp"); 780 781 if (s) 782 port = s->s_port; 783 else { 784 char *ptr; 785 786 port = strtol (port_str, &ptr, 10); 787 if (port == 0 && ptr == port_str) 788 errx (1, "Bad port `%s'", port_str); 789 port = htons(port); 790 } 791 } 792 if (port == 0) { 793 #ifdef KRB5 794 port = krb5_getportbyname (context, "kpop", "tcp", 1109); 795 #elif defined(KRB4) 796 port = k_getportbyname ("kpop", "tcp", htons(1109)); 797 #else 798 #error must define KRB4 or KRB5 799 #endif 800 } 801 802 parse_pobox (pobox, &host, &user); 803 804 #ifdef KRB5 805 if (ret && use_v5) { 806 ret = do_v5 (host, port, user, filename, header_str, 807 do_leave, verbose_level, do_fork); 808 } 809 #endif 810 811 #ifdef KRB4 812 if (ret && use_v4) { 813 ret = do_v4 (host, port, user, filename, header_str, 814 do_leave, verbose_level, do_fork); 815 } 816 #endif /* KRB4 */ 817 return ret; 818 } 819