1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1983, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif 35 36 #if 0 37 #ifndef lint 38 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 #endif 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */ 46 47 /* 48 * TFTP User Program -- Command Interface. 49 */ 50 #include <sys/param.h> 51 #include <sys/types.h> 52 #include <sys/socket.h> 53 #include <sys/sysctl.h> 54 #include <sys/file.h> 55 #include <sys/param.h> 56 #include <sys/stat.h> 57 58 #include <netinet/in.h> 59 #include <arpa/inet.h> 60 #include <arpa/tftp.h> 61 62 #include <ctype.h> 63 #include <err.h> 64 #include <histedit.h> 65 #include <netdb.h> 66 #include <setjmp.h> 67 #include <signal.h> 68 #include <stdio.h> 69 #include <stdlib.h> 70 #include <string.h> 71 #include <unistd.h> 72 73 #include "tftp-utils.h" 74 #include "tftp-io.h" 75 #include "tftp-options.h" 76 #include "tftp.h" 77 78 #define MAXLINE 200 79 #define TIMEOUT 5 /* secs between rexmt's */ 80 81 static struct sockaddr_storage peeraddr; 82 static int connected; 83 static char mode[32]; 84 jmp_buf toplevel; 85 volatile int txrx_error; 86 static int peer; 87 88 #define MAX_MARGV 20 89 static int margc; 90 static char *margv[MAX_MARGV]; 91 92 int verbose; 93 char *port = NULL; 94 95 static void get(int, char **); 96 static void help(int, char **); 97 static void intr(int); 98 static void modecmd(int, char **); 99 static void put(int, char **); 100 static void quit(int, char **); 101 static void setascii(int, char **); 102 static void setbinary(int, char **); 103 static void setpeer0(char *, const char *); 104 static void setpeer(int, char **); 105 static void settimeoutpacket(int, char **); 106 static void settimeoutnetwork(int, char **); 107 static void setdebug(int, char **); 108 static void setverbose(int, char **); 109 static void showstatus(int, char **); 110 static void setblocksize(int, char **); 111 static void setblocksize2(int, char **); 112 static void setoptions(int, char **); 113 static void setrollover(int, char **); 114 static void setpacketdrop(int, char **); 115 116 static void command(void) __dead2; 117 static const char *command_prompt(void); 118 119 static void urihandling(char *URI); 120 static void getusage(char *); 121 static void makeargv(char *line); 122 static void putusage(char *); 123 static void settftpmode(const char *); 124 125 static char *tail(char *); 126 static struct cmd *getcmd(char *); 127 128 #define HELPINDENT (sizeof("connect")) 129 130 struct cmd { 131 const char *name; 132 void (*handler)(int, char **); 133 const char *help; 134 }; 135 136 static struct cmd cmdtab[] = { 137 { "connect", setpeer, "connect to remote tftp" }, 138 { "mode", modecmd, "set file transfer mode" }, 139 { "put", put, "send file" }, 140 { "get", get, "receive file" }, 141 { "quit", quit, "exit tftp" }, 142 { "verbose", setverbose, "toggle verbose mode" }, 143 { "status", showstatus, "show current status" }, 144 { "binary", setbinary, "set mode to octet" }, 145 { "ascii", setascii, "set mode to netascii" }, 146 { "rexmt", settimeoutpacket, 147 "set per-packet retransmission timeout[-]" }, 148 { "timeout", settimeoutnetwork, 149 "set total retransmission timeout" }, 150 { "trace", setdebug, "enable 'debug packet'[-]" }, 151 { "debug", setdebug, "enable verbose output" }, 152 { "blocksize", setblocksize, "set blocksize[*]" }, 153 { "blocksize2", setblocksize2, "set blocksize as a power of 2[**]" }, 154 { "rollover", setrollover, "rollover after 64K packets[**]" }, 155 { "options", setoptions, 156 "enable or disable RFC2347 style options" }, 157 { "help", help, "print help information" }, 158 { "packetdrop", setpacketdrop, "artificial packetloss feature" }, 159 { "?", help, "print help information" }, 160 { NULL, NULL, NULL } 161 }; 162 163 static struct modes { 164 const char *m_name; 165 const char *m_mode; 166 } modes[] = { 167 { "ascii", "netascii" }, 168 { "netascii", "netascii" }, 169 { "binary", "octet" }, 170 { "image", "octet" }, 171 { "octet", "octet" }, 172 { NULL, NULL } 173 }; 174 175 int 176 main(int argc, char *argv[]) 177 { 178 179 acting_as_client = 1; 180 peer = -1; 181 strcpy(mode, "netascii"); 182 signal(SIGINT, intr); 183 if (argc > 1) { 184 if (setjmp(toplevel) != 0) 185 exit(txrx_error); 186 187 if (strncmp(argv[1], "tftp://", 7) == 0) { 188 urihandling(argv[1]); 189 exit(txrx_error); 190 } 191 192 setpeer(argc, argv); 193 } 194 if (setjmp(toplevel) != 0) 195 (void)putchar('\n'); 196 197 init_options(); 198 command(); 199 } 200 201 /* 202 * RFC3617 handling of TFTP URIs: 203 * 204 * tftpURI = "tftp://" host "/" file [ mode ] 205 * mode = ";" "mode=" ( "netascii" / "octet" ) 206 * file = *( unreserved / escaped ) 207 * host = <as specified by RFC 2732> 208 * unreserved = <as specified in RFC 2396> 209 * escaped = <as specified in RFC 2396> 210 * 211 * We are cheating a little bit by allowing any mode as specified in the 212 * modes table defined earlier on in this file and mapping it on the real 213 * mode. 214 */ 215 static void 216 urihandling(char *URI) 217 { 218 char uri[ARG_MAX]; 219 char *host = NULL; 220 char *path = NULL; 221 char *opts = NULL; 222 const char *tmode = "octet"; 223 char *s; 224 char line[MAXLINE]; 225 int i; 226 227 strncpy(uri, URI, ARG_MAX); 228 host = uri + 7; 229 230 if ((s = strchr(host, '/')) == NULL) { 231 fprintf(stderr, 232 "Invalid URI: Couldn't find / after hostname\n"); 233 exit(1); 234 } 235 *s = '\0'; 236 path = s + 1; 237 238 if ((s = strchr(path, ';')) != NULL) { 239 *s = '\0'; 240 opts = s + 1; 241 242 if (strncmp(opts, "mode=", 5) == 0) { 243 tmode = opts; 244 tmode += 5; 245 246 for (i = 0; modes[i].m_name != NULL; i++) { 247 if (strcmp(modes[i].m_name, tmode) == 0) 248 break; 249 } 250 if (modes[i].m_name == NULL) { 251 fprintf(stderr, "Invalid mode: '%s'\n", mode); 252 exit(1); 253 } 254 settftpmode(modes[i].m_mode); 255 } 256 } else { 257 settftpmode("octet"); 258 } 259 260 setpeer0(host, NULL); 261 262 sprintf(line, "get %s", path); 263 makeargv(line); 264 get(margc, margv); 265 } 266 267 static char hostname[MAXHOSTNAMELEN]; 268 269 static void 270 setpeer0(char *host, const char *lport) 271 { 272 struct addrinfo hints, *res0, *res; 273 int error; 274 const char *cause = "unknown"; 275 276 if (connected) { 277 close(peer); 278 peer = -1; 279 } 280 connected = 0; 281 282 memset(&hints, 0, sizeof(hints)); 283 hints.ai_family = PF_UNSPEC; 284 hints.ai_socktype = SOCK_DGRAM; 285 hints.ai_protocol = IPPROTO_UDP; 286 hints.ai_flags = AI_CANONNAME; 287 if (!lport) 288 lport = "tftp"; 289 error = getaddrinfo(host, lport, &hints, &res0); 290 if (error) { 291 warnx("%s", gai_strerror(error)); 292 return; 293 } 294 295 for (res = res0; res; res = res->ai_next) { 296 if (res->ai_addrlen > sizeof(peeraddr)) 297 continue; 298 peer = socket(res->ai_family, res->ai_socktype, 299 res->ai_protocol); 300 if (peer < 0) { 301 cause = "socket"; 302 continue; 303 } 304 305 memset(&peer_sock, 0, sizeof(peer_sock)); 306 peer_sock.ss_family = res->ai_family; 307 peer_sock.ss_len = res->ai_addrlen; 308 if (bind(peer, (struct sockaddr *)&peer_sock, peer_sock.ss_len) < 0) { 309 cause = "bind"; 310 close(peer); 311 peer = -1; 312 continue; 313 } 314 315 break; 316 } 317 318 if (peer < 0) 319 warn("%s", cause); 320 else { 321 /* res->ai_addr <= sizeof(peeraddr) is guaranteed */ 322 memcpy(&peer_sock, res->ai_addr, res->ai_addrlen); 323 if (res->ai_canonname) { 324 (void) strncpy(hostname, res->ai_canonname, 325 sizeof(hostname)); 326 } else 327 (void) strncpy(hostname, host, sizeof(hostname)); 328 hostname[sizeof(hostname)-1] = 0; 329 connected = 1; 330 } 331 332 freeaddrinfo(res0); 333 } 334 335 static void 336 setpeer(int argc, char *argv[]) 337 { 338 char line[MAXLINE]; 339 340 if (argc < 2) { 341 strcpy(line, "Connect "); 342 printf("(to) "); 343 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 344 makeargv(line); 345 argc = margc; 346 argv = margv; 347 } 348 if ((argc < 2) || (argc > 3)) { 349 printf("usage: %s [host [port]]\n", argv[0]); 350 return; 351 } 352 if (argc == 3) { 353 port = argv[2]; 354 setpeer0(argv[1], argv[2]); 355 } else 356 setpeer0(argv[1], NULL); 357 } 358 359 static void 360 modecmd(int argc, char *argv[]) 361 { 362 struct modes *p; 363 const char *sep; 364 365 if (argc < 2) { 366 printf("Using %s mode to transfer files.\n", mode); 367 return; 368 } 369 if (argc == 2) { 370 for (p = modes; p->m_name; p++) 371 if (strcmp(argv[1], p->m_name) == 0) 372 break; 373 if (p->m_name) { 374 settftpmode(p->m_mode); 375 return; 376 } 377 printf("%s: unknown mode\n", argv[1]); 378 /* drop through and print usage message */ 379 } 380 381 printf("usage: %s [", argv[0]); 382 sep = " "; 383 for (p = modes; p->m_name != NULL; p++) { 384 printf("%s%s", sep, p->m_name); 385 if (*sep == ' ') 386 sep = " | "; 387 } 388 printf(" ]\n"); 389 return; 390 } 391 392 static void 393 setbinary(int argc __unused, char *argv[] __unused) 394 { 395 396 settftpmode("octet"); 397 } 398 399 static void 400 setascii(int argc __unused, char *argv[] __unused) 401 { 402 403 settftpmode("netascii"); 404 } 405 406 static void 407 settftpmode(const char *newmode) 408 { 409 410 strcpy(mode, newmode); 411 if (verbose) 412 printf("mode set to %s\n", mode); 413 } 414 415 416 /* 417 * Send file(s). 418 */ 419 static void 420 put(int argc, char *argv[]) 421 { 422 int fd; 423 int n; 424 char *cp, *targ; 425 char line[MAXLINE]; 426 struct stat sb; 427 428 if (argc < 2) { 429 strcpy(line, "send "); 430 printf("(file) "); 431 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 432 makeargv(line); 433 argc = margc; 434 argv = margv; 435 } 436 if (argc < 2) { 437 putusage(argv[0]); 438 return; 439 } 440 targ = argv[argc - 1]; 441 if (rindex(argv[argc - 1], ':')) { 442 char *lcp; 443 444 for (n = 1; n < argc - 1; n++) 445 if (index(argv[n], ':')) { 446 putusage(argv[0]); 447 return; 448 } 449 lcp = argv[argc - 1]; 450 targ = rindex(lcp, ':'); 451 *targ++ = 0; 452 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 453 lcp[strlen(lcp) - 1] = '\0'; 454 lcp++; 455 } 456 setpeer0(lcp, NULL); 457 } 458 if (!connected) { 459 printf("No target machine specified.\n"); 460 return; 461 } 462 if (argc < 4) { 463 cp = argc == 2 ? tail(targ) : argv[1]; 464 fd = open(cp, O_RDONLY); 465 if (fd < 0) { 466 warn("%s", cp); 467 return; 468 } 469 470 stat(cp, &sb); 471 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 472 473 if (verbose) 474 printf("putting %s to %s:%s [%s]\n", 475 cp, hostname, targ, mode); 476 xmitfile(peer, port, fd, targ, mode); 477 return; 478 } 479 /* this assumes the target is a directory */ 480 /* on a remote unix system. hmmmm. */ 481 cp = index(targ, '\0'); 482 *cp++ = '/'; 483 for (n = 1; n < argc - 1; n++) { 484 strcpy(cp, tail(argv[n])); 485 fd = open(argv[n], O_RDONLY); 486 if (fd < 0) { 487 warn("%s", argv[n]); 488 continue; 489 } 490 491 stat(cp, &sb); 492 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 493 494 if (verbose) 495 printf("putting %s to %s:%s [%s]\n", 496 argv[n], hostname, targ, mode); 497 xmitfile(peer, port, fd, targ, mode); 498 } 499 } 500 501 static void 502 putusage(char *s) 503 { 504 505 printf("usage: %s file [remotename]\n", s); 506 printf(" %s file host:remotename\n", s); 507 printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s); 508 } 509 510 /* 511 * Receive file(s). 512 */ 513 static void 514 get(int argc, char *argv[]) 515 { 516 int fd; 517 int n; 518 char *cp; 519 char *src; 520 char line[MAXLINE]; 521 522 if (argc < 2) { 523 strcpy(line, "get "); 524 printf("(files) "); 525 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 526 makeargv(line); 527 argc = margc; 528 argv = margv; 529 } 530 if (argc < 2) { 531 getusage(argv[0]); 532 return; 533 } 534 if (!connected) { 535 for (n = 1; n < argc ; n++) 536 if (rindex(argv[n], ':') == 0) { 537 printf("No remote host specified and " 538 "no host given for file '%s'\n", argv[n]); 539 getusage(argv[0]); 540 return; 541 } 542 } 543 for (n = 1; n < argc ; n++) { 544 src = rindex(argv[n], ':'); 545 if (src == NULL) 546 src = argv[n]; 547 else { 548 char *lcp; 549 550 *src++ = 0; 551 lcp = argv[n]; 552 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 553 lcp[strlen(lcp) - 1] = '\0'; 554 lcp++; 555 } 556 setpeer0(lcp, NULL); 557 if (!connected) 558 continue; 559 } 560 if (argc < 4) { 561 cp = argc == 3 ? argv[2] : tail(src); 562 fd = creat(cp, 0644); 563 if (fd < 0) { 564 warn("%s", cp); 565 return; 566 } 567 if (verbose) 568 printf("getting from %s:%s to %s [%s]\n", 569 hostname, src, cp, mode); 570 recvfile(peer, port, fd, src, mode); 571 break; 572 } 573 cp = tail(src); /* new .. jdg */ 574 fd = creat(cp, 0644); 575 if (fd < 0) { 576 warn("%s", cp); 577 continue; 578 } 579 if (verbose) 580 printf("getting from %s:%s to %s [%s]\n", 581 hostname, src, cp, mode); 582 recvfile(peer, port, fd, src, mode); 583 } 584 } 585 586 static void 587 getusage(char *s) 588 { 589 590 printf("usage: %s file [localname]\n", s); 591 printf(" %s [host:]file [localname]\n", s); 592 printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s); 593 } 594 595 static void 596 settimeoutpacket(int argc, char *argv[]) 597 { 598 int t; 599 char line[MAXLINE]; 600 601 if (argc < 2) { 602 strcpy(line, "Packet timeout "); 603 printf("(value) "); 604 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 605 makeargv(line); 606 argc = margc; 607 argv = margv; 608 } 609 if (argc != 2) { 610 printf("usage: %s value\n", argv[0]); 611 return; 612 } 613 t = atoi(argv[1]); 614 if (t < 0) { 615 printf("%s: bad value\n", argv[1]); 616 return; 617 } 618 619 settimeouts(t, timeoutnetwork, maxtimeouts); 620 } 621 622 static void 623 settimeoutnetwork(int argc, char *argv[]) 624 { 625 int t; 626 char line[MAXLINE]; 627 628 if (argc < 2) { 629 strcpy(line, "Network timeout "); 630 printf("(value) "); 631 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 632 makeargv(line); 633 argc = margc; 634 argv = margv; 635 } 636 if (argc != 2) { 637 printf("usage: %s value\n", argv[0]); 638 return; 639 } 640 t = atoi(argv[1]); 641 if (t < 0) { 642 printf("%s: bad value\n", argv[1]); 643 return; 644 } 645 646 settimeouts(timeoutpacket, t, maxtimeouts); 647 } 648 649 static void 650 showstatus(int argc __unused, char *argv[] __unused) 651 { 652 653 printf("Remote host: %s\n", 654 connected ? hostname : "none specified yet"); 655 printf("RFC2347 Options support: %s\n", 656 options_rfc_enabled ? "enabled" : "disabled"); 657 printf("Non-RFC defined options support: %s\n", 658 options_extra_enabled ? "enabled" : "disabled"); 659 printf("Mode: %s\n", mode); 660 printf("Verbose: %s\n", verbose ? "on" : "off"); 661 printf("Debug: %s\n", debug_show(debug)); 662 printf("Artificial packetloss: %d in 100 packets\n", 663 packetdroppercentage); 664 printf("Segment size: %d bytes\n", segsize); 665 printf("Network timeout: %d seconds\n", timeoutpacket); 666 printf("Maximum network timeout: %d seconds\n", timeoutnetwork); 667 printf("Maximum timeouts: %d \n", maxtimeouts); 668 } 669 670 static void 671 intr(int dummy __unused) 672 { 673 674 signal(SIGALRM, SIG_IGN); 675 alarm(0); 676 longjmp(toplevel, -1); 677 } 678 679 static char * 680 tail(char *filename) 681 { 682 char *s; 683 684 while (*filename) { 685 s = rindex(filename, '/'); 686 if (s == NULL) 687 break; 688 if (s[1]) 689 return (s + 1); 690 *s = '\0'; 691 } 692 return (filename); 693 } 694 695 static const char * 696 command_prompt(void) 697 { 698 699 return ("tftp> "); 700 } 701 702 /* 703 * Command parser. 704 */ 705 static void 706 command(void) 707 { 708 HistEvent he; 709 struct cmd *c; 710 static EditLine *el; 711 static History *hist; 712 const char *bp; 713 char *cp; 714 int len, num, vrbose; 715 char line[MAXLINE]; 716 717 vrbose = isatty(0); 718 if (vrbose) { 719 el = el_init("tftp", stdin, stdout, stderr); 720 hist = history_init(); 721 history(hist, &he, H_SETSIZE, 100); 722 el_set(el, EL_HIST, history, hist); 723 el_set(el, EL_EDITOR, "emacs"); 724 el_set(el, EL_PROMPT, command_prompt); 725 el_set(el, EL_SIGNAL, 1); 726 el_source(el, NULL); 727 } 728 for (;;) { 729 if (vrbose) { 730 if ((bp = el_gets(el, &num)) == NULL || num == 0) 731 exit(0); 732 len = (num > MAXLINE) ? MAXLINE : num; 733 memcpy(line, bp, len); 734 line[len] = '\0'; 735 history(hist, &he, H_ENTER, bp); 736 } else { 737 line[0] = 0; 738 if (fgets(line, sizeof line , stdin) == 0) { 739 if (feof(stdin)) { 740 exit(txrx_error); 741 } else { 742 continue; 743 } 744 } 745 } 746 if ((cp = strchr(line, '\n'))) 747 *cp = '\0'; 748 if (line[0] == 0) 749 continue; 750 makeargv(line); 751 if (margc == 0) 752 continue; 753 c = getcmd(margv[0]); 754 if (c == (struct cmd *)-1) { 755 printf("?Ambiguous command\n"); 756 continue; 757 } 758 if (c == 0) { 759 printf("?Invalid command\n"); 760 continue; 761 } 762 (*c->handler)(margc, margv); 763 } 764 } 765 766 static struct cmd * 767 getcmd(char *name) 768 { 769 const char *p, *q; 770 struct cmd *c, *found; 771 int nmatches, longest; 772 773 longest = 0; 774 nmatches = 0; 775 found = 0; 776 for (c = cmdtab; (p = c->name) != NULL; c++) { 777 for (q = name; *q == *p++; q++) 778 if (*q == 0) /* exact match? */ 779 return (c); 780 if (!*q) { /* the name was a prefix */ 781 if (q - name > longest) { 782 longest = q - name; 783 nmatches = 1; 784 found = c; 785 } else if (q - name == longest) 786 nmatches++; 787 } 788 } 789 if (nmatches > 1) 790 return ((struct cmd *)-1); 791 return (found); 792 } 793 794 /* 795 * Slice a string up into argc/argv. 796 */ 797 static void 798 makeargv(char *line) 799 { 800 char *cp; 801 char **argp = margv; 802 803 margc = 0; 804 if ((cp = strchr(line, '\n')) != NULL) 805 *cp = '\0'; 806 for (cp = line; margc < MAX_MARGV - 1 && *cp != '\0';) { 807 while (isspace(*cp)) 808 cp++; 809 if (*cp == '\0') 810 break; 811 *argp++ = cp; 812 margc += 1; 813 while (*cp != '\0' && !isspace(*cp)) 814 cp++; 815 if (*cp == '\0') 816 break; 817 *cp++ = '\0'; 818 } 819 *argp++ = 0; 820 } 821 822 static void 823 quit(int argc __unused, char *argv[] __unused) 824 { 825 826 exit(txrx_error); 827 } 828 829 /* 830 * Help command. 831 */ 832 static void 833 help(int argc, char *argv[]) 834 { 835 struct cmd *c; 836 837 if (argc == 1) { 838 printf("Commands may be abbreviated. Commands are:\n\n"); 839 for (c = cmdtab; c->name; c++) 840 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help); 841 842 printf("\n[-] : You shouldn't use these ones anymore.\n"); 843 printf("[*] : RFC2834 options support required.\n"); 844 printf("[**] : Non-standard RFC2834 option.\n"); 845 return; 846 } 847 while (--argc > 0) { 848 char *arg; 849 arg = *++argv; 850 c = getcmd(arg); 851 if (c == (struct cmd *)-1) 852 printf("?Ambiguous help command: %s\n", arg); 853 else if (c == (struct cmd *)0) 854 printf("?Invalid help command: %s\n", arg); 855 else 856 printf("%s\n", c->help); 857 } 858 } 859 860 static void 861 setverbose(int argc __unused, char *argv[] __unused) 862 { 863 864 verbose = !verbose; 865 printf("Verbose mode %s.\n", verbose ? "on" : "off"); 866 } 867 868 static void 869 setoptions(int argc, char *argv[]) 870 { 871 872 if (argc == 2) { 873 if (strcasecmp(argv[1], "enable") == 0 || 874 strcasecmp(argv[1], "on") == 0) { 875 options_extra_enabled = 1; 876 options_rfc_enabled = 1; 877 } 878 if (strcasecmp(argv[1], "disable") == 0 || 879 strcasecmp(argv[1], "off") == 0) { 880 options_extra_enabled = 0; 881 options_rfc_enabled = 0; 882 } 883 if (strcasecmp(argv[1], "extra") == 0) 884 options_extra_enabled = !options_extra_enabled; 885 } 886 printf("Support for RFC2347 style options are now %s.\n", 887 options_rfc_enabled ? "enabled" : "disabled"); 888 printf("Support for non-RFC defined options are now %s.\n", 889 options_extra_enabled ? "enabled" : "disabled"); 890 891 printf("\nThe following options are available:\n" 892 "\toptions on : enable support for RFC2347 style options\n" 893 "\toptions off : disable support for RFC2347 style options\n" 894 "\toptions extra : toggle support for non-RFC defined options\n" 895 ); 896 } 897 898 static void 899 setrollover(int argc, char *argv[]) 900 { 901 902 if (argc == 2) { 903 if (strcasecmp(argv[1], "never") == 0 || 904 strcasecmp(argv[1], "none") == 0) { 905 free(options[OPT_ROLLOVER].o_request); 906 options[OPT_ROLLOVER].o_request = NULL; 907 } 908 if (strcasecmp(argv[1], "1") == 0) { 909 free(options[OPT_ROLLOVER].o_request); 910 options[OPT_ROLLOVER].o_request = strdup("1"); 911 } 912 if (strcasecmp(argv[1], "0") == 0) { 913 free(options[OPT_ROLLOVER].o_request); 914 options[OPT_ROLLOVER].o_request = strdup("0"); 915 } 916 } 917 printf("Support for the rollover options is %s.\n", 918 options[OPT_ROLLOVER].o_request != NULL ? "enabled" : "disabled"); 919 if (options[OPT_ROLLOVER].o_request != NULL) 920 printf("Block rollover will be to block %s.\n", 921 options[OPT_ROLLOVER].o_request); 922 923 924 printf("\nThe following rollover options are available:\n" 925 "\trollover 0 : rollover to block zero (default)\n" 926 "\trollover 1 : rollover to block one\n" 927 "\trollover never : do not support the rollover option\n" 928 "\trollover none : do not support the rollover option\n" 929 ); 930 } 931 932 static void 933 setdebug(int argc, char *argv[]) 934 { 935 int i; 936 937 if (argc != 1) { 938 i = 1; 939 while (i < argc) 940 debug ^= debug_find(argv[i++]); 941 } 942 printf("The following debugging is enabled: %s\n", debug_show(debug)); 943 944 printf("\nThe following debugs are available:\n"); 945 i = 0; 946 while (debugs[i].name != NULL) { 947 printf("\t%s\t%s\n", debugs[i].name, debugs[i].desc); 948 i++; 949 } 950 } 951 952 static void 953 setblocksize(int argc, char *argv[]) 954 { 955 956 if (!options_rfc_enabled) 957 printf("RFC2347 style options are not enabled " 958 "(but proceeding anyway)\n"); 959 960 if (argc != 1) { 961 int size = atoi(argv[1]); 962 size_t max; 963 u_long maxdgram; 964 965 max = sizeof(maxdgram); 966 if (sysctlbyname("net.inet.udp.maxdgram", 967 &maxdgram, &max, NULL, 0) < 0) { 968 perror("sysctl: net.inet.udp.maxdgram"); 969 return; 970 } 971 972 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 973 printf("Blocksize should be between %d and %d bytes.\n", 974 BLKSIZE_MIN, BLKSIZE_MAX); 975 return; 976 } else if (size > (int)maxdgram - 4) { 977 printf("Blocksize can't be bigger than %ld bytes due " 978 "to the net.inet.udp.maxdgram sysctl limitation.\n", 979 maxdgram - 4); 980 asprintf(&options[OPT_BLKSIZE].o_request, 981 "%ld", maxdgram - 4); 982 } else { 983 asprintf(&options[OPT_BLKSIZE].o_request, "%d", size); 984 } 985 } 986 printf("Blocksize is now %s bytes.\n", options[OPT_BLKSIZE].o_request); 987 } 988 989 static void 990 setblocksize2(int argc, char *argv[]) 991 { 992 993 if (!options_rfc_enabled || !options_extra_enabled) 994 printf( 995 "RFC2347 style or non-RFC defined options are not enabled " 996 "(but proceeding anyway)\n"); 997 998 if (argc != 1) { 999 int size = atoi(argv[1]); 1000 int i; 1001 size_t max; 1002 u_long maxdgram; 1003 1004 int sizes[] = { 1005 8, 16, 32, 64, 128, 256, 512, 1024, 1006 2048, 4096, 8192, 16384, 32768, 0 1007 }; 1008 1009 max = sizeof(maxdgram); 1010 if (sysctlbyname("net.inet.udp.maxdgram", 1011 &maxdgram, &max, NULL, 0) < 0) { 1012 perror("sysctl: net.inet.udp.maxdgram"); 1013 return; 1014 } 1015 1016 for (i = 0; sizes[i] != 0; i++) { 1017 if (sizes[i] == size) break; 1018 } 1019 if (sizes[i] == 0) { 1020 printf("Blocksize2 should be a power of two between " 1021 "8 and 32768.\n"); 1022 return; 1023 } 1024 1025 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 1026 printf("Blocksize2 should be between " 1027 "%d and %d bytes.\n", BLKSIZE_MIN, BLKSIZE_MAX); 1028 return; 1029 } else if (size > (int)maxdgram - 4) { 1030 printf("Blocksize2 can't be bigger than %ld bytes due " 1031 "to the net.inet.udp.maxdgram sysctl limitation.\n", 1032 maxdgram - 4); 1033 for (i = 0; sizes[i+1] != 0; i++) { 1034 if ((int)maxdgram < sizes[i+1]) break; 1035 } 1036 asprintf(&options[OPT_BLKSIZE2].o_request, 1037 "%d", sizes[i]); 1038 } else { 1039 asprintf(&options[OPT_BLKSIZE2].o_request, "%d", size); 1040 } 1041 } 1042 printf("Blocksize2 is now %s bytes.\n", 1043 options[OPT_BLKSIZE2].o_request); 1044 } 1045 1046 static void 1047 setpacketdrop(int argc, char *argv[]) 1048 { 1049 1050 if (argc != 1) 1051 packetdroppercentage = atoi(argv[1]); 1052 1053 printf("Randomly %d in 100 packets will be dropped\n", 1054 packetdroppercentage); 1055 } 1056