1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1983, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #endif 37 38 #if 0 39 #ifndef lint 40 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93"; 41 #endif 42 #endif 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */ 48 49 /* 50 * TFTP User Program -- Command Interface. 51 */ 52 #include <sys/param.h> 53 #include <sys/types.h> 54 #include <sys/socket.h> 55 #include <sys/sysctl.h> 56 #include <sys/file.h> 57 #include <sys/stat.h> 58 59 #include <netinet/in.h> 60 #include <arpa/inet.h> 61 #include <arpa/tftp.h> 62 63 #include <ctype.h> 64 #include <err.h> 65 #include <histedit.h> 66 #include <netdb.h> 67 #include <setjmp.h> 68 #include <signal.h> 69 #include <stdbool.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <unistd.h> 74 75 #include "tftp-utils.h" 76 #include "tftp-io.h" 77 #include "tftp-options.h" 78 #include "tftp.h" 79 80 #define MAXLINE (2 * MAXPATHLEN) 81 #define TIMEOUT 5 /* secs between rexmt's */ 82 83 typedef struct sockaddr_storage peeraddr; 84 static int connected; 85 static char mode[32]; 86 static jmp_buf toplevel; 87 volatile int txrx_error; 88 static int peer; 89 90 #define MAX_MARGV 20 91 static int margc; 92 static char *margv[MAX_MARGV]; 93 94 int verbose; 95 static char *port = NULL; 96 97 static void get(int, char **); 98 static void help(int, char **); 99 static void intr(int); 100 static void modecmd(int, char **); 101 static void put(int, char **); 102 static void quit(int, char **); 103 static void setascii(int, char **); 104 static void setbinary(int, char **); 105 static void setpeer0(char *, const char *); 106 static void setpeer(int, char **); 107 static void settimeoutpacket(int, char **); 108 static void settimeoutnetwork(int, char **); 109 static void setdebug(int, char **); 110 static void setverbose(int, char **); 111 static void showstatus(int, char **); 112 static void setblocksize(int, char **); 113 static void setblocksize2(int, char **); 114 static void setoptions(int, char **); 115 static void setrollover(int, char **); 116 static void setpacketdrop(int, char **); 117 118 static void command(bool, EditLine *, History *, HistEvent *) __dead2; 119 static const char *command_prompt(void); 120 121 static void urihandling(char *URI); 122 static void getusage(char *); 123 static void makeargv(char *line); 124 static void putusage(char *); 125 static void settftpmode(const char *); 126 127 static char *tail(char *); 128 static struct cmd *getcmd(char *); 129 130 #define HELPINDENT (sizeof("connect")) 131 132 struct cmd { 133 const char *name; 134 void (*handler)(int, char **); 135 const char *help; 136 }; 137 138 static struct cmd cmdtab[] = { 139 { "connect", setpeer, "connect to remote tftp" }, 140 { "mode", modecmd, "set file transfer mode" }, 141 { "put", put, "send file" }, 142 { "get", get, "receive file" }, 143 { "quit", quit, "exit tftp" }, 144 { "verbose", setverbose, "toggle verbose mode" }, 145 { "status", showstatus, "show current status" }, 146 { "binary", setbinary, "set mode to octet" }, 147 { "ascii", setascii, "set mode to netascii" }, 148 { "rexmt", settimeoutpacket, 149 "set per-packet retransmission timeout[-]" }, 150 { "timeout", settimeoutnetwork, 151 "set total retransmission timeout" }, 152 { "trace", setdebug, "enable 'debug packet'[-]" }, 153 { "debug", setdebug, "enable verbose output" }, 154 { "blocksize", setblocksize, "set blocksize[*]" }, 155 { "blocksize2", setblocksize2, "set blocksize as a power of 2[**]" }, 156 { "rollover", setrollover, "rollover after 64K packets[**]" }, 157 { "options", setoptions, 158 "enable or disable RFC2347 style options" }, 159 { "help", help, "print help information" }, 160 { "packetdrop", setpacketdrop, "artificial packetloss feature" }, 161 { "?", help, "print help information" }, 162 { NULL, NULL, NULL } 163 }; 164 165 static struct modes { 166 const char *m_name; 167 const char *m_mode; 168 } modes[] = { 169 { "ascii", "netascii" }, 170 { "netascii", "netascii" }, 171 { "binary", "octet" }, 172 { "image", "octet" }, 173 { "octet", "octet" }, 174 { NULL, NULL } 175 }; 176 177 int 178 main(int argc, char *argv[]) 179 { 180 HistEvent he; 181 static EditLine *el; 182 static History *hist; 183 bool interactive; 184 185 acting_as_client = 1; 186 peer = -1; 187 strcpy(mode, "netascii"); 188 signal(SIGINT, intr); 189 190 interactive = isatty(STDIN_FILENO); 191 if (interactive) { 192 el = el_init("tftp", stdin, stdout, stderr); 193 hist = history_init(); 194 history(hist, &he, H_SETSIZE, 100); 195 el_set(el, EL_HIST, history, hist); 196 el_set(el, EL_EDITOR, "emacs"); 197 el_set(el, EL_PROMPT, command_prompt); 198 el_set(el, EL_SIGNAL, 1); 199 el_source(el, NULL); 200 } 201 202 if (argc > 1) { 203 if (setjmp(toplevel) != 0) 204 exit(txrx_error); 205 206 if (strncmp(argv[1], "tftp://", 7) == 0) { 207 urihandling(argv[1]); 208 exit(txrx_error); 209 } 210 211 setpeer(argc, argv); 212 } 213 214 if (setjmp(toplevel) != 0) { 215 if (interactive) 216 el_reset(el); 217 (void)putchar('\n'); 218 } 219 220 init_options(); 221 command(interactive, el, hist, &he); 222 } 223 224 /* 225 * RFC3617 handling of TFTP URIs: 226 * 227 * tftpURI = "tftp://" host "/" file [ mode ] 228 * mode = ";" "mode=" ( "netascii" / "octet" ) 229 * file = *( unreserved / escaped ) 230 * host = <as specified by RFC 2732> 231 * unreserved = <as specified in RFC 2396> 232 * escaped = <as specified in RFC 2396> 233 * 234 * We are cheating a little bit by allowing any mode as specified in the 235 * modes table defined earlier on in this file and mapping it on the real 236 * mode. 237 */ 238 static void 239 urihandling(char *URI) 240 { 241 char uri[ARG_MAX]; 242 char *host = NULL; 243 char *path = NULL; 244 char *opts = NULL; 245 const char *tmode = "octet"; 246 char *s; 247 char line[MAXLINE]; 248 int i; 249 250 strlcpy(uri, URI, ARG_MAX); 251 host = uri + 7; 252 253 if ((s = strchr(host, '/')) == NULL) { 254 fprintf(stderr, 255 "Invalid URI: Couldn't find / after hostname\n"); 256 exit(1); 257 } 258 *s = '\0'; 259 path = s + 1; 260 261 if ((s = strchr(path, ';')) != NULL) { 262 *s = '\0'; 263 opts = s + 1; 264 265 if (strncmp(opts, "mode=", 5) == 0) { 266 tmode = opts; 267 tmode += 5; 268 269 for (i = 0; modes[i].m_name != NULL; i++) { 270 if (strcmp(modes[i].m_name, tmode) == 0) 271 break; 272 } 273 if (modes[i].m_name == NULL) { 274 fprintf(stderr, "Invalid mode: '%s'\n", mode); 275 exit(1); 276 } 277 settftpmode(modes[i].m_mode); 278 } 279 } else { 280 settftpmode("octet"); 281 } 282 283 setpeer0(host, NULL); 284 285 sprintf(line, "get %s", path); 286 makeargv(line); 287 get(margc, margv); 288 } 289 290 static char hostname[MAXHOSTNAMELEN]; 291 292 static void 293 setpeer0(char *host, const char *lport) 294 { 295 struct addrinfo hints, *res0, *res; 296 int error; 297 const char *cause = "unknown"; 298 299 if (connected) { 300 close(peer); 301 peer = -1; 302 } 303 connected = 0; 304 305 memset(&hints, 0, sizeof(hints)); 306 hints.ai_family = PF_UNSPEC; 307 hints.ai_socktype = SOCK_DGRAM; 308 hints.ai_protocol = IPPROTO_UDP; 309 hints.ai_flags = AI_CANONNAME; 310 if (!lport) 311 lport = "tftp"; 312 error = getaddrinfo(host, lport, &hints, &res0); 313 if (error) { 314 warnx("%s", gai_strerror(error)); 315 return; 316 } 317 318 for (res = res0; res; res = res->ai_next) { 319 if (res->ai_addrlen > sizeof(peeraddr)) 320 continue; 321 peer = socket(res->ai_family, res->ai_socktype, 322 res->ai_protocol); 323 if (peer < 0) { 324 cause = "socket"; 325 continue; 326 } 327 328 memset(&peer_sock, 0, sizeof(peer_sock)); 329 peer_sock.ss_family = res->ai_family; 330 peer_sock.ss_len = res->ai_addrlen; 331 if (bind(peer, (struct sockaddr *)&peer_sock, peer_sock.ss_len) < 0) { 332 cause = "bind"; 333 close(peer); 334 peer = -1; 335 continue; 336 } 337 338 break; 339 } 340 341 if (peer < 0) 342 warn("%s", cause); 343 else { 344 /* res->ai_addr <= sizeof(peeraddr) is guaranteed */ 345 memcpy(&peer_sock, res->ai_addr, res->ai_addrlen); 346 if (res->ai_canonname) { 347 (void) strlcpy(hostname, res->ai_canonname, 348 sizeof(hostname)); 349 } else 350 (void) strlcpy(hostname, host, sizeof(hostname)); 351 connected = 1; 352 } 353 354 freeaddrinfo(res0); 355 } 356 357 static void 358 setpeer(int argc, char *argv[]) 359 { 360 char line[MAXLINE]; 361 362 if (argc < 2) { 363 strcpy(line, "Connect "); 364 printf("(to) "); 365 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 366 makeargv(line); 367 argc = margc; 368 argv = margv; 369 } 370 if ((argc < 2) || (argc > 3)) { 371 printf("usage: %s [host [port]]\n", argv[0]); 372 return; 373 } 374 if (argc == 3) { 375 port = argv[2]; 376 setpeer0(argv[1], argv[2]); 377 } else 378 setpeer0(argv[1], NULL); 379 } 380 381 static void 382 modecmd(int argc, char *argv[]) 383 { 384 struct modes *p; 385 const char *sep; 386 387 if (argc < 2) { 388 printf("Using %s mode to transfer files.\n", mode); 389 return; 390 } 391 if (argc == 2) { 392 for (p = modes; p->m_name; p++) 393 if (strcmp(argv[1], p->m_name) == 0) 394 break; 395 if (p->m_name) { 396 settftpmode(p->m_mode); 397 return; 398 } 399 printf("%s: unknown mode\n", argv[1]); 400 /* drop through and print usage message */ 401 } 402 403 printf("usage: %s [", argv[0]); 404 sep = " "; 405 for (p = modes; p->m_name != NULL; p++) { 406 printf("%s%s", sep, p->m_name); 407 if (*sep == ' ') 408 sep = " | "; 409 } 410 printf(" ]\n"); 411 return; 412 } 413 414 static void 415 setbinary(int argc __unused, char *argv[] __unused) 416 { 417 418 settftpmode("octet"); 419 } 420 421 static void 422 setascii(int argc __unused, char *argv[] __unused) 423 { 424 425 settftpmode("netascii"); 426 } 427 428 static void 429 settftpmode(const char *newmode) 430 { 431 432 strcpy(mode, newmode); 433 if (verbose) 434 printf("mode set to %s\n", mode); 435 } 436 437 438 /* 439 * Send file(s). 440 */ 441 static void 442 put(int argc, char *argv[]) 443 { 444 int fd; 445 int n; 446 char *cp, *targ; 447 char line[MAXLINE]; 448 struct stat sb; 449 450 if (argc < 2) { 451 strcpy(line, "send "); 452 printf("(file) "); 453 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 454 makeargv(line); 455 argc = margc; 456 argv = margv; 457 } 458 if (argc < 2) { 459 putusage(argv[0]); 460 return; 461 } 462 targ = argv[argc - 1]; 463 if (strrchr(argv[argc - 1], ':')) { 464 char *lcp; 465 466 for (n = 1; n < argc - 1; n++) 467 if (strchr(argv[n], ':')) { 468 putusage(argv[0]); 469 return; 470 } 471 lcp = argv[argc - 1]; 472 targ = strrchr(lcp, ':'); 473 *targ++ = 0; 474 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 475 lcp[strlen(lcp) - 1] = '\0'; 476 lcp++; 477 } 478 setpeer0(lcp, NULL); 479 } 480 if (!connected) { 481 printf("No target machine specified.\n"); 482 return; 483 } 484 if (argc < 4) { 485 cp = argc == 2 ? tail(targ) : argv[1]; 486 fd = open(cp, O_RDONLY); 487 if (fd < 0) { 488 warn("%s", cp); 489 return; 490 } 491 492 stat(cp, &sb); 493 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 494 495 if (verbose) 496 printf("putting %s to %s:%s [%s]\n", 497 cp, hostname, targ, mode); 498 xmitfile(peer, port, fd, targ, mode); 499 return; 500 } 501 /* this assumes the target is a directory */ 502 /* on a remote unix system. hmmmm. */ 503 cp = strchr(targ, '\0'); 504 *cp++ = '/'; 505 for (n = 1; n < argc - 1; n++) { 506 strcpy(cp, tail(argv[n])); 507 fd = open(argv[n], O_RDONLY); 508 if (fd < 0) { 509 warn("%s", argv[n]); 510 continue; 511 } 512 513 stat(cp, &sb); 514 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 515 516 if (verbose) 517 printf("putting %s to %s:%s [%s]\n", 518 argv[n], hostname, targ, mode); 519 xmitfile(peer, port, fd, targ, mode); 520 } 521 } 522 523 static void 524 putusage(char *s) 525 { 526 527 printf("usage: %s file [remotename]\n", s); 528 printf(" %s file host:remotename\n", s); 529 printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s); 530 } 531 532 /* 533 * Receive file(s). 534 */ 535 static void 536 get(int argc, char *argv[]) 537 { 538 int fd; 539 int n; 540 char *cp; 541 char *src; 542 char line[MAXLINE]; 543 544 if (argc < 2) { 545 strcpy(line, "get "); 546 printf("(files) "); 547 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 548 makeargv(line); 549 argc = margc; 550 argv = margv; 551 } 552 if (argc < 2) { 553 getusage(argv[0]); 554 return; 555 } 556 if (!connected) { 557 for (n = 1; n < argc ; n++) 558 if (strrchr(argv[n], ':') == 0) { 559 printf("No remote host specified and " 560 "no host given for file '%s'\n", argv[n]); 561 getusage(argv[0]); 562 return; 563 } 564 } 565 for (n = 1; n < argc ; n++) { 566 src = strrchr(argv[n], ':'); 567 if (src == NULL) 568 src = argv[n]; 569 else { 570 char *lcp; 571 572 *src++ = 0; 573 lcp = argv[n]; 574 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 575 lcp[strlen(lcp) - 1] = '\0'; 576 lcp++; 577 } 578 setpeer0(lcp, NULL); 579 if (!connected) 580 continue; 581 } 582 if (argc < 4) { 583 cp = argc == 3 ? argv[2] : tail(src); 584 fd = creat(cp, 0644); 585 if (fd < 0) { 586 warn("%s", cp); 587 return; 588 } 589 if (verbose) 590 printf("getting from %s:%s to %s [%s]\n", 591 hostname, src, cp, mode); 592 recvfile(peer, port, fd, src, mode); 593 break; 594 } 595 cp = tail(src); /* new .. jdg */ 596 fd = creat(cp, 0644); 597 if (fd < 0) { 598 warn("%s", cp); 599 continue; 600 } 601 if (verbose) 602 printf("getting from %s:%s to %s [%s]\n", 603 hostname, src, cp, mode); 604 recvfile(peer, port, fd, src, mode); 605 } 606 } 607 608 static void 609 getusage(char *s) 610 { 611 612 printf("usage: %s file [localname]\n", s); 613 printf(" %s [host:]file [localname]\n", s); 614 printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s); 615 } 616 617 static void 618 settimeoutpacket(int argc, char *argv[]) 619 { 620 int t; 621 char line[MAXLINE]; 622 623 if (argc < 2) { 624 strcpy(line, "Packet timeout "); 625 printf("(value) "); 626 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 627 makeargv(line); 628 argc = margc; 629 argv = margv; 630 } 631 if (argc != 2) { 632 printf("usage: %s value\n", argv[0]); 633 return; 634 } 635 t = atoi(argv[1]); 636 if (t < 0) { 637 printf("%s: bad value\n", argv[1]); 638 return; 639 } 640 641 settimeouts(t, timeoutnetwork, maxtimeouts); 642 } 643 644 static void 645 settimeoutnetwork(int argc, char *argv[]) 646 { 647 int t; 648 char line[MAXLINE]; 649 650 if (argc < 2) { 651 strcpy(line, "Network timeout "); 652 printf("(value) "); 653 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 654 makeargv(line); 655 argc = margc; 656 argv = margv; 657 } 658 if (argc != 2) { 659 printf("usage: %s value\n", argv[0]); 660 return; 661 } 662 t = atoi(argv[1]); 663 if (t < 0) { 664 printf("%s: bad value\n", argv[1]); 665 return; 666 } 667 668 settimeouts(timeoutpacket, t, maxtimeouts); 669 } 670 671 static void 672 showstatus(int argc __unused, char *argv[] __unused) 673 { 674 675 printf("Remote host: %s\n", 676 connected ? hostname : "none specified yet"); 677 printf("RFC2347 Options support: %s\n", 678 options_rfc_enabled ? "enabled" : "disabled"); 679 printf("Non-RFC defined options support: %s\n", 680 options_extra_enabled ? "enabled" : "disabled"); 681 printf("Mode: %s\n", mode); 682 printf("Verbose: %s\n", verbose ? "on" : "off"); 683 printf("Debug: %s\n", debug_show(debug)); 684 printf("Artificial packetloss: %d in 100 packets\n", 685 packetdroppercentage); 686 printf("Segment size: %d bytes\n", segsize); 687 printf("Network timeout: %d seconds\n", timeoutpacket); 688 printf("Maximum network timeout: %d seconds\n", timeoutnetwork); 689 printf("Maximum timeouts: %d \n", maxtimeouts); 690 } 691 692 static void 693 intr(int dummy __unused) 694 { 695 696 signal(SIGALRM, SIG_IGN); 697 alarm(0); 698 longjmp(toplevel, -1); 699 } 700 701 static char * 702 tail(char *filename) 703 { 704 char *s; 705 706 while (*filename) { 707 s = strrchr(filename, '/'); 708 if (s == NULL) 709 break; 710 if (s[1]) 711 return (s + 1); 712 *s = '\0'; 713 } 714 return (filename); 715 } 716 717 static const char * 718 command_prompt(void) 719 { 720 721 return ("tftp> "); 722 } 723 724 /* 725 * Command parser. 726 */ 727 static void 728 command(bool interactive, EditLine *el, History *hist, HistEvent *hep) 729 { 730 struct cmd *c; 731 const char *bp; 732 char *cp; 733 int len, num; 734 char line[MAXLINE]; 735 736 for (;;) { 737 if (interactive) { 738 if ((bp = el_gets(el, &num)) == NULL || num == 0) 739 exit(0); 740 len = MIN(MAXLINE, num); 741 memcpy(line, bp, len); 742 line[len] = '\0'; 743 history(hist, hep, H_ENTER, bp); 744 } else { 745 line[0] = 0; 746 if (fgets(line, sizeof line , stdin) == NULL) { 747 if (feof(stdin)) { 748 exit(txrx_error); 749 } else { 750 continue; 751 } 752 } 753 } 754 if ((cp = strchr(line, '\n'))) 755 *cp = '\0'; 756 if (line[0] == 0) 757 continue; 758 makeargv(line); 759 if (margc == 0) 760 continue; 761 c = getcmd(margv[0]); 762 if (c == (struct cmd *)-1) { 763 printf("?Ambiguous command\n"); 764 continue; 765 } 766 if (c == NULL) { 767 printf("?Invalid command\n"); 768 continue; 769 } 770 (*c->handler)(margc, margv); 771 } 772 } 773 774 static struct cmd * 775 getcmd(char *name) 776 { 777 const char *p, *q; 778 struct cmd *c, *found; 779 int nmatches, longest; 780 781 longest = 0; 782 nmatches = 0; 783 found = 0; 784 for (c = cmdtab; (p = c->name) != NULL; c++) { 785 for (q = name; *q == *p++; q++) 786 if (*q == 0) /* exact match? */ 787 return (c); 788 if (!*q) { /* the name was a prefix */ 789 if (q - name > longest) { 790 longest = q - name; 791 nmatches = 1; 792 found = c; 793 } else if (q - name == longest) 794 nmatches++; 795 } 796 } 797 if (nmatches > 1) 798 return ((struct cmd *)-1); 799 return (found); 800 } 801 802 /* 803 * Slice a string up into argc/argv. 804 */ 805 static void 806 makeargv(char *line) 807 { 808 char *cp; 809 char **argp = margv; 810 811 margc = 0; 812 if ((cp = strchr(line, '\n')) != NULL) 813 *cp = '\0'; 814 for (cp = line; margc < MAX_MARGV - 1 && *cp != '\0';) { 815 while (isspace(*cp)) 816 cp++; 817 if (*cp == '\0') 818 break; 819 *argp++ = cp; 820 margc += 1; 821 while (*cp != '\0' && !isspace(*cp)) 822 cp++; 823 if (*cp == '\0') 824 break; 825 *cp++ = '\0'; 826 } 827 *argp++ = 0; 828 } 829 830 static void 831 quit(int argc __unused, char *argv[] __unused) 832 { 833 834 exit(txrx_error); 835 } 836 837 /* 838 * Help command. 839 */ 840 static void 841 help(int argc, char *argv[]) 842 { 843 struct cmd *c; 844 845 if (argc == 1) { 846 printf("Commands may be abbreviated. Commands are:\n\n"); 847 for (c = cmdtab; c->name; c++) 848 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help); 849 850 printf("\n[-] : You shouldn't use these ones anymore.\n"); 851 printf("[*] : RFC2347 options support required.\n"); 852 printf("[**] : Non-standard RFC2347 option.\n"); 853 return; 854 } 855 while (--argc > 0) { 856 char *arg; 857 arg = *++argv; 858 c = getcmd(arg); 859 if (c == (struct cmd *)-1) 860 printf("?Ambiguous help command: %s\n", arg); 861 else if (c == (struct cmd *)0) 862 printf("?Invalid help command: %s\n", arg); 863 else 864 printf("%s\n", c->help); 865 } 866 } 867 868 static void 869 setverbose(int argc __unused, char *argv[] __unused) 870 { 871 872 verbose = !verbose; 873 printf("Verbose mode %s.\n", verbose ? "on" : "off"); 874 } 875 876 static void 877 setoptions(int argc, char *argv[]) 878 { 879 880 if (argc == 2) { 881 if (strcasecmp(argv[1], "enable") == 0 || 882 strcasecmp(argv[1], "on") == 0) { 883 options_extra_enabled = 1; 884 options_rfc_enabled = 1; 885 } 886 if (strcasecmp(argv[1], "disable") == 0 || 887 strcasecmp(argv[1], "off") == 0) { 888 options_extra_enabled = 0; 889 options_rfc_enabled = 0; 890 } 891 if (strcasecmp(argv[1], "extra") == 0) 892 options_extra_enabled = !options_extra_enabled; 893 } 894 printf("Support for RFC2347 style options are now %s.\n", 895 options_rfc_enabled ? "enabled" : "disabled"); 896 printf("Support for non-RFC defined options are now %s.\n", 897 options_extra_enabled ? "enabled" : "disabled"); 898 899 printf("\nThe following options are available:\n" 900 "\toptions on : enable support for RFC2347 style options\n" 901 "\toptions off : disable support for RFC2347 style options\n" 902 "\toptions extra : toggle support for non-RFC defined options\n" 903 ); 904 } 905 906 static void 907 setrollover(int argc, char *argv[]) 908 { 909 910 if (argc == 2) { 911 if (strcasecmp(argv[1], "never") == 0 || 912 strcasecmp(argv[1], "none") == 0) { 913 free(options[OPT_ROLLOVER].o_request); 914 options[OPT_ROLLOVER].o_request = NULL; 915 } 916 if (strcasecmp(argv[1], "1") == 0) { 917 free(options[OPT_ROLLOVER].o_request); 918 options[OPT_ROLLOVER].o_request = strdup("1"); 919 } 920 if (strcasecmp(argv[1], "0") == 0) { 921 free(options[OPT_ROLLOVER].o_request); 922 options[OPT_ROLLOVER].o_request = strdup("0"); 923 } 924 } 925 printf("Support for the rollover options is %s.\n", 926 options[OPT_ROLLOVER].o_request != NULL ? "enabled" : "disabled"); 927 if (options[OPT_ROLLOVER].o_request != NULL) 928 printf("Block rollover will be to block %s.\n", 929 options[OPT_ROLLOVER].o_request); 930 931 932 printf("\nThe following rollover options are available:\n" 933 "\trollover 0 : rollover to block zero (default)\n" 934 "\trollover 1 : rollover to block one\n" 935 "\trollover never : do not support the rollover option\n" 936 "\trollover none : do not support the rollover option\n" 937 ); 938 } 939 940 static void 941 setdebug(int argc, char *argv[]) 942 { 943 int i; 944 945 if (argc != 1) { 946 i = 1; 947 while (i < argc) 948 debug ^= debug_find(argv[i++]); 949 } 950 printf("The following debugging is enabled: %s\n", debug_show(debug)); 951 952 printf("\nThe following debugs are available:\n"); 953 i = 0; 954 while (debugs[i].name != NULL) { 955 printf("\t%s\t%s\n", debugs[i].name, debugs[i].desc); 956 i++; 957 } 958 } 959 960 static void 961 setblocksize(int argc, char *argv[]) 962 { 963 964 if (!options_rfc_enabled) 965 printf("RFC2347 style options are not enabled " 966 "(but proceeding anyway)\n"); 967 968 if (argc != 1) { 969 int size = atoi(argv[1]); 970 size_t max; 971 u_long maxdgram; 972 973 max = sizeof(maxdgram); 974 if (sysctlbyname("net.inet.udp.maxdgram", 975 &maxdgram, &max, NULL, 0) < 0) { 976 perror("sysctl: net.inet.udp.maxdgram"); 977 return; 978 } 979 980 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 981 printf("Blocksize should be between %d and %d bytes.\n", 982 BLKSIZE_MIN, BLKSIZE_MAX); 983 return; 984 } else if (size > (int)maxdgram - 4) { 985 printf("Blocksize can't be bigger than %ld bytes due " 986 "to the net.inet.udp.maxdgram sysctl limitation.\n", 987 maxdgram - 4); 988 asprintf(&options[OPT_BLKSIZE].o_request, 989 "%ld", maxdgram - 4); 990 } else { 991 asprintf(&options[OPT_BLKSIZE].o_request, "%d", size); 992 } 993 } 994 printf("Blocksize is now %s bytes.\n", options[OPT_BLKSIZE].o_request); 995 } 996 997 static void 998 setblocksize2(int argc, char *argv[]) 999 { 1000 1001 if (!options_rfc_enabled || !options_extra_enabled) 1002 printf( 1003 "RFC2347 style or non-RFC defined options are not enabled " 1004 "(but proceeding anyway)\n"); 1005 1006 if (argc != 1) { 1007 int size = atoi(argv[1]); 1008 int i; 1009 size_t max; 1010 u_long maxdgram; 1011 1012 int sizes[] = { 1013 8, 16, 32, 64, 128, 256, 512, 1024, 1014 2048, 4096, 8192, 16384, 32768, 0 1015 }; 1016 1017 max = sizeof(maxdgram); 1018 if (sysctlbyname("net.inet.udp.maxdgram", 1019 &maxdgram, &max, NULL, 0) < 0) { 1020 perror("sysctl: net.inet.udp.maxdgram"); 1021 return; 1022 } 1023 1024 for (i = 0; sizes[i] != 0; i++) { 1025 if (sizes[i] == size) break; 1026 } 1027 if (sizes[i] == 0) { 1028 printf("Blocksize2 should be a power of two between " 1029 "8 and 32768.\n"); 1030 return; 1031 } 1032 1033 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 1034 printf("Blocksize2 should be between " 1035 "%d and %d bytes.\n", BLKSIZE_MIN, BLKSIZE_MAX); 1036 return; 1037 } else if (size > (int)maxdgram - 4) { 1038 printf("Blocksize2 can't be bigger than %ld bytes due " 1039 "to the net.inet.udp.maxdgram sysctl limitation.\n", 1040 maxdgram - 4); 1041 for (i = 0; sizes[i+1] != 0; i++) { 1042 if ((int)maxdgram < sizes[i+1]) break; 1043 } 1044 asprintf(&options[OPT_BLKSIZE2].o_request, 1045 "%d", sizes[i]); 1046 } else { 1047 asprintf(&options[OPT_BLKSIZE2].o_request, "%d", size); 1048 } 1049 } 1050 printf("Blocksize2 is now %s bytes.\n", 1051 options[OPT_BLKSIZE2].o_request); 1052 } 1053 1054 static void 1055 setpacketdrop(int argc, char *argv[]) 1056 { 1057 1058 if (argc != 1) 1059 packetdroppercentage = atoi(argv[1]); 1060 1061 printf("Randomly %d in 100 packets will be dropped\n", 1062 packetdroppercentage); 1063 } 1064