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, "octet"); 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 strlcpy(mode, newmode, sizeof(mode)); 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 if (fstat(fd, &sb) < 0) { 493 warn("%s", cp); 494 return; 495 } 496 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 497 498 if (verbose) 499 printf("putting %s to %s:%s [%s]\n", 500 cp, hostname, targ, mode); 501 xmitfile(peer, port, fd, targ, mode); 502 close(fd); 503 return; 504 } 505 /* this assumes the target is a directory */ 506 /* on a remote unix system. hmmmm. */ 507 cp = strchr(targ, '\0'); 508 *cp++ = '/'; 509 for (n = 1; n < argc - 1; n++) { 510 strcpy(cp, tail(argv[n])); 511 fd = open(argv[n], O_RDONLY); 512 if (fd < 0) { 513 warn("%s", argv[n]); 514 continue; 515 } 516 517 if (fstat(fd, &sb) < 0) { 518 warn("%s", argv[n]); 519 continue; 520 } 521 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 522 523 if (verbose) 524 printf("putting %s to %s:%s [%s]\n", 525 argv[n], hostname, targ, mode); 526 xmitfile(peer, port, fd, targ, mode); 527 } 528 } 529 530 static void 531 putusage(char *s) 532 { 533 534 printf("usage: %s file [remotename]\n", s); 535 printf(" %s file host:remotename\n", s); 536 printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s); 537 } 538 539 /* 540 * Receive file(s). 541 */ 542 static void 543 get(int argc, char *argv[]) 544 { 545 int fd; 546 int n; 547 char *cp; 548 char *src; 549 char line[MAXLINE]; 550 551 if (argc < 2) { 552 strcpy(line, "get "); 553 printf("(files) "); 554 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 555 makeargv(line); 556 argc = margc; 557 argv = margv; 558 } 559 if (argc < 2) { 560 getusage(argv[0]); 561 return; 562 } 563 if (!connected) { 564 for (n = 1; n < argc ; n++) 565 if (strrchr(argv[n], ':') == 0) { 566 printf("No remote host specified and " 567 "no host given for file '%s'\n", argv[n]); 568 getusage(argv[0]); 569 return; 570 } 571 } 572 for (n = 1; n < argc ; n++) { 573 src = strrchr(argv[n], ':'); 574 if (src == NULL) 575 src = argv[n]; 576 else { 577 char *lcp; 578 579 *src++ = 0; 580 lcp = argv[n]; 581 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 582 lcp[strlen(lcp) - 1] = '\0'; 583 lcp++; 584 } 585 setpeer0(lcp, NULL); 586 if (!connected) 587 continue; 588 } 589 if (argc < 4) { 590 cp = argc == 3 ? argv[2] : tail(src); 591 fd = creat(cp, 0644); 592 if (fd < 0) { 593 warn("%s", cp); 594 return; 595 } 596 if (verbose) 597 printf("getting from %s:%s to %s [%s]\n", 598 hostname, src, cp, mode); 599 recvfile(peer, port, fd, src, mode); 600 break; 601 } 602 cp = tail(src); /* new .. jdg */ 603 fd = creat(cp, 0644); 604 if (fd < 0) { 605 warn("%s", cp); 606 continue; 607 } 608 if (verbose) 609 printf("getting from %s:%s to %s [%s]\n", 610 hostname, src, cp, mode); 611 recvfile(peer, port, fd, src, mode); 612 } 613 } 614 615 static void 616 getusage(char *s) 617 { 618 619 printf("usage: %s file [localname]\n", s); 620 printf(" %s [host:]file [localname]\n", s); 621 printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s); 622 } 623 624 static void 625 settimeoutpacket(int argc, char *argv[]) 626 { 627 int t; 628 char line[MAXLINE]; 629 630 if (argc < 2) { 631 strcpy(line, "Packet timeout "); 632 printf("(value) "); 633 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 634 makeargv(line); 635 argc = margc; 636 argv = margv; 637 } 638 if (argc != 2) { 639 printf("usage: %s value\n", argv[0]); 640 return; 641 } 642 t = atoi(argv[1]); 643 if (t < 0) { 644 printf("%s: bad value\n", argv[1]); 645 return; 646 } 647 648 settimeouts(t, timeoutnetwork, maxtimeouts); 649 } 650 651 static void 652 settimeoutnetwork(int argc, char *argv[]) 653 { 654 int t; 655 char line[MAXLINE]; 656 657 if (argc < 2) { 658 strcpy(line, "Network timeout "); 659 printf("(value) "); 660 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 661 makeargv(line); 662 argc = margc; 663 argv = margv; 664 } 665 if (argc != 2) { 666 printf("usage: %s value\n", argv[0]); 667 return; 668 } 669 t = atoi(argv[1]); 670 if (t < 0) { 671 printf("%s: bad value\n", argv[1]); 672 return; 673 } 674 675 settimeouts(timeoutpacket, t, maxtimeouts); 676 } 677 678 static void 679 showstatus(int argc __unused, char *argv[] __unused) 680 { 681 682 printf("Remote host: %s\n", 683 connected ? hostname : "none specified yet"); 684 printf("RFC2347 Options support: %s\n", 685 options_rfc_enabled ? "enabled" : "disabled"); 686 printf("Non-RFC defined options support: %s\n", 687 options_extra_enabled ? "enabled" : "disabled"); 688 printf("Mode: %s\n", mode); 689 printf("Verbose: %s\n", verbose ? "on" : "off"); 690 printf("Debug: %s\n", debug_show(debug)); 691 printf("Artificial packetloss: %d in 100 packets\n", 692 packetdroppercentage); 693 printf("Segment size: %d bytes\n", segsize); 694 printf("Network timeout: %d seconds\n", timeoutpacket); 695 printf("Maximum network timeout: %d seconds\n", timeoutnetwork); 696 printf("Maximum timeouts: %d \n", maxtimeouts); 697 } 698 699 static void 700 intr(int dummy __unused) 701 { 702 703 signal(SIGALRM, SIG_IGN); 704 alarm(0); 705 longjmp(toplevel, -1); 706 } 707 708 static char * 709 tail(char *filename) 710 { 711 char *s; 712 713 while (*filename) { 714 s = strrchr(filename, '/'); 715 if (s == NULL) 716 break; 717 if (s[1]) 718 return (s + 1); 719 *s = '\0'; 720 } 721 return (filename); 722 } 723 724 static const char * 725 command_prompt(void) 726 { 727 728 return ("tftp> "); 729 } 730 731 /* 732 * Command parser. 733 */ 734 static void 735 command(bool interactive, EditLine *el, History *hist, HistEvent *hep) 736 { 737 struct cmd *c; 738 const char *bp; 739 char *cp; 740 int len, num; 741 char line[MAXLINE]; 742 743 for (;;) { 744 if (interactive) { 745 if ((bp = el_gets(el, &num)) == NULL || num == 0) 746 exit(0); 747 len = MIN(MAXLINE, num); 748 memcpy(line, bp, len); 749 line[len] = '\0'; 750 history(hist, hep, H_ENTER, bp); 751 } else { 752 line[0] = 0; 753 if (fgets(line, sizeof line , stdin) == NULL) { 754 if (feof(stdin)) { 755 exit(txrx_error); 756 } else { 757 continue; 758 } 759 } 760 } 761 if ((cp = strchr(line, '\n'))) 762 *cp = '\0'; 763 if (line[0] == 0) 764 continue; 765 makeargv(line); 766 if (margc == 0) 767 continue; 768 c = getcmd(margv[0]); 769 if (c == (struct cmd *)-1) { 770 printf("?Ambiguous command\n"); 771 continue; 772 } 773 if (c == NULL) { 774 printf("?Invalid command\n"); 775 continue; 776 } 777 (*c->handler)(margc, margv); 778 } 779 } 780 781 static struct cmd * 782 getcmd(char *name) 783 { 784 const char *p, *q; 785 struct cmd *c, *found; 786 int nmatches, longest; 787 788 longest = 0; 789 nmatches = 0; 790 found = 0; 791 for (c = cmdtab; (p = c->name) != NULL; c++) { 792 for (q = name; *q == *p++; q++) 793 if (*q == 0) /* exact match? */ 794 return (c); 795 if (!*q) { /* the name was a prefix */ 796 if (q - name > longest) { 797 longest = q - name; 798 nmatches = 1; 799 found = c; 800 } else if (q - name == longest) 801 nmatches++; 802 } 803 } 804 if (nmatches > 1) 805 return ((struct cmd *)-1); 806 return (found); 807 } 808 809 /* 810 * Slice a string up into argc/argv. 811 */ 812 static void 813 makeargv(char *line) 814 { 815 char *cp; 816 char **argp = margv; 817 818 margc = 0; 819 if ((cp = strchr(line, '\n')) != NULL) 820 *cp = '\0'; 821 for (cp = line; margc < MAX_MARGV - 1 && *cp != '\0';) { 822 while (isspace(*cp)) 823 cp++; 824 if (*cp == '\0') 825 break; 826 *argp++ = cp; 827 margc += 1; 828 while (*cp != '\0' && !isspace(*cp)) 829 cp++; 830 if (*cp == '\0') 831 break; 832 *cp++ = '\0'; 833 } 834 *argp++ = 0; 835 } 836 837 static void 838 quit(int argc __unused, char *argv[] __unused) 839 { 840 841 exit(txrx_error); 842 } 843 844 /* 845 * Help command. 846 */ 847 static void 848 help(int argc, char *argv[]) 849 { 850 struct cmd *c; 851 852 if (argc == 1) { 853 printf("Commands may be abbreviated. Commands are:\n\n"); 854 for (c = cmdtab; c->name; c++) 855 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help); 856 857 printf("\n[-] : You shouldn't use these ones anymore.\n"); 858 printf("[*] : RFC2347 options support required.\n"); 859 printf("[**] : Non-standard RFC2347 option.\n"); 860 return; 861 } 862 while (--argc > 0) { 863 char *arg; 864 arg = *++argv; 865 c = getcmd(arg); 866 if (c == (struct cmd *)-1) 867 printf("?Ambiguous help command: %s\n", arg); 868 else if (c == (struct cmd *)0) 869 printf("?Invalid help command: %s\n", arg); 870 else 871 printf("%s\n", c->help); 872 } 873 } 874 875 static void 876 setverbose(int argc __unused, char *argv[] __unused) 877 { 878 879 verbose = !verbose; 880 printf("Verbose mode %s.\n", verbose ? "on" : "off"); 881 } 882 883 static void 884 setoptions(int argc, char *argv[]) 885 { 886 887 if (argc == 2) { 888 if (strcasecmp(argv[1], "enable") == 0 || 889 strcasecmp(argv[1], "on") == 0) { 890 options_extra_enabled = 1; 891 options_rfc_enabled = 1; 892 } 893 if (strcasecmp(argv[1], "disable") == 0 || 894 strcasecmp(argv[1], "off") == 0) { 895 options_extra_enabled = 0; 896 options_rfc_enabled = 0; 897 } 898 if (strcasecmp(argv[1], "extra") == 0) 899 options_extra_enabled = !options_extra_enabled; 900 } 901 printf("Support for RFC2347 style options are now %s.\n", 902 options_rfc_enabled ? "enabled" : "disabled"); 903 printf("Support for non-RFC defined options are now %s.\n", 904 options_extra_enabled ? "enabled" : "disabled"); 905 906 printf("\nThe following options are available:\n" 907 "\toptions on : enable support for RFC2347 style options\n" 908 "\toptions off : disable support for RFC2347 style options\n" 909 "\toptions extra : toggle support for non-RFC defined options\n" 910 ); 911 } 912 913 static void 914 setrollover(int argc, char *argv[]) 915 { 916 917 if (argc == 2) { 918 if (strcasecmp(argv[1], "never") == 0 || 919 strcasecmp(argv[1], "none") == 0) { 920 free(options[OPT_ROLLOVER].o_request); 921 options[OPT_ROLLOVER].o_request = NULL; 922 } 923 if (strcasecmp(argv[1], "1") == 0) { 924 free(options[OPT_ROLLOVER].o_request); 925 options[OPT_ROLLOVER].o_request = strdup("1"); 926 } 927 if (strcasecmp(argv[1], "0") == 0) { 928 free(options[OPT_ROLLOVER].o_request); 929 options[OPT_ROLLOVER].o_request = strdup("0"); 930 } 931 } 932 printf("Support for the rollover options is %s.\n", 933 options[OPT_ROLLOVER].o_request != NULL ? "enabled" : "disabled"); 934 if (options[OPT_ROLLOVER].o_request != NULL) 935 printf("Block rollover will be to block %s.\n", 936 options[OPT_ROLLOVER].o_request); 937 938 939 printf("\nThe following rollover options are available:\n" 940 "\trollover 0 : rollover to block zero (default)\n" 941 "\trollover 1 : rollover to block one\n" 942 "\trollover never : do not support the rollover option\n" 943 "\trollover none : do not support the rollover option\n" 944 ); 945 } 946 947 static void 948 setdebug(int argc, char *argv[]) 949 { 950 int i; 951 952 if (argc != 1) { 953 i = 1; 954 while (i < argc) 955 debug ^= debug_find(argv[i++]); 956 } 957 printf("The following debugging is enabled: %s\n", debug_show(debug)); 958 959 printf("\nThe following debugs are available:\n"); 960 i = 0; 961 while (debugs[i].name != NULL) { 962 printf("\t%s\t%s\n", debugs[i].name, debugs[i].desc); 963 i++; 964 } 965 } 966 967 static void 968 setblocksize(int argc, char *argv[]) 969 { 970 971 if (!options_rfc_enabled) 972 printf("RFC2347 style options are not enabled " 973 "(but proceeding anyway)\n"); 974 975 if (argc != 1) { 976 int size = atoi(argv[1]); 977 size_t max; 978 u_long maxdgram; 979 980 max = sizeof(maxdgram); 981 if (sysctlbyname("net.inet.udp.maxdgram", 982 &maxdgram, &max, NULL, 0) < 0) { 983 perror("sysctl: net.inet.udp.maxdgram"); 984 return; 985 } 986 987 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 988 printf("Blocksize should be between %d and %d bytes.\n", 989 BLKSIZE_MIN, BLKSIZE_MAX); 990 return; 991 } else if (size > (int)maxdgram - 4) { 992 printf("Blocksize can't be bigger than %ld bytes due " 993 "to the net.inet.udp.maxdgram sysctl limitation.\n", 994 maxdgram - 4); 995 asprintf(&options[OPT_BLKSIZE].o_request, 996 "%ld", maxdgram - 4); 997 } else { 998 asprintf(&options[OPT_BLKSIZE].o_request, "%d", size); 999 } 1000 } 1001 printf("Blocksize is now %s bytes.\n", options[OPT_BLKSIZE].o_request); 1002 } 1003 1004 static void 1005 setblocksize2(int argc, char *argv[]) 1006 { 1007 1008 if (!options_rfc_enabled || !options_extra_enabled) 1009 printf( 1010 "RFC2347 style or non-RFC defined options are not enabled " 1011 "(but proceeding anyway)\n"); 1012 1013 if (argc != 1) { 1014 int size = atoi(argv[1]); 1015 int i; 1016 size_t max; 1017 u_long maxdgram; 1018 1019 int sizes[] = { 1020 8, 16, 32, 64, 128, 256, 512, 1024, 1021 2048, 4096, 8192, 16384, 32768, 0 1022 }; 1023 1024 max = sizeof(maxdgram); 1025 if (sysctlbyname("net.inet.udp.maxdgram", 1026 &maxdgram, &max, NULL, 0) < 0) { 1027 perror("sysctl: net.inet.udp.maxdgram"); 1028 return; 1029 } 1030 1031 for (i = 0; sizes[i] != 0; i++) { 1032 if (sizes[i] == size) break; 1033 } 1034 if (sizes[i] == 0) { 1035 printf("Blocksize2 should be a power of two between " 1036 "8 and 32768.\n"); 1037 return; 1038 } 1039 1040 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 1041 printf("Blocksize2 should be between " 1042 "%d and %d bytes.\n", BLKSIZE_MIN, BLKSIZE_MAX); 1043 return; 1044 } else if (size > (int)maxdgram - 4) { 1045 printf("Blocksize2 can't be bigger than %ld bytes due " 1046 "to the net.inet.udp.maxdgram sysctl limitation.\n", 1047 maxdgram - 4); 1048 for (i = 0; sizes[i+1] != 0; i++) { 1049 if ((int)maxdgram < sizes[i+1]) break; 1050 } 1051 asprintf(&options[OPT_BLKSIZE2].o_request, 1052 "%d", sizes[i]); 1053 } else { 1054 asprintf(&options[OPT_BLKSIZE2].o_request, "%d", size); 1055 } 1056 } 1057 printf("Blocksize2 is now %s bytes.\n", 1058 options[OPT_BLKSIZE2].o_request); 1059 } 1060 1061 static void 1062 setpacketdrop(int argc, char *argv[]) 1063 { 1064 1065 if (argc != 1) 1066 packetdroppercentage = atoi(argv[1]); 1067 1068 printf("Randomly %d in 100 packets will be dropped\n", 1069 packetdroppercentage); 1070 } 1071