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