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