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 strncpy(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) strncpy(hostname, res->ai_canonname, 324 sizeof(hostname)); 325 } else 326 (void) strncpy(hostname, host, sizeof(hostname)); 327 hostname[sizeof(hostname)-1] = 0; 328 connected = 1; 329 } 330 331 freeaddrinfo(res0); 332 } 333 334 static void 335 setpeer(int argc, char *argv[]) 336 { 337 char line[MAXLINE]; 338 339 if (argc < 2) { 340 strcpy(line, "Connect "); 341 printf("(to) "); 342 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 343 makeargv(line); 344 argc = margc; 345 argv = margv; 346 } 347 if ((argc < 2) || (argc > 3)) { 348 printf("usage: %s [host [port]]\n", argv[0]); 349 return; 350 } 351 if (argc == 3) { 352 port = argv[2]; 353 setpeer0(argv[1], argv[2]); 354 } else 355 setpeer0(argv[1], NULL); 356 } 357 358 static void 359 modecmd(int argc, char *argv[]) 360 { 361 struct modes *p; 362 const char *sep; 363 364 if (argc < 2) { 365 printf("Using %s mode to transfer files.\n", mode); 366 return; 367 } 368 if (argc == 2) { 369 for (p = modes; p->m_name; p++) 370 if (strcmp(argv[1], p->m_name) == 0) 371 break; 372 if (p->m_name) { 373 settftpmode(p->m_mode); 374 return; 375 } 376 printf("%s: unknown mode\n", argv[1]); 377 /* drop through and print usage message */ 378 } 379 380 printf("usage: %s [", argv[0]); 381 sep = " "; 382 for (p = modes; p->m_name != NULL; p++) { 383 printf("%s%s", sep, p->m_name); 384 if (*sep == ' ') 385 sep = " | "; 386 } 387 printf(" ]\n"); 388 return; 389 } 390 391 static void 392 setbinary(int argc __unused, char *argv[] __unused) 393 { 394 395 settftpmode("octet"); 396 } 397 398 static void 399 setascii(int argc __unused, char *argv[] __unused) 400 { 401 402 settftpmode("netascii"); 403 } 404 405 static void 406 settftpmode(const char *newmode) 407 { 408 409 strcpy(mode, newmode); 410 if (verbose) 411 printf("mode set to %s\n", mode); 412 } 413 414 415 /* 416 * Send file(s). 417 */ 418 static void 419 put(int argc, char *argv[]) 420 { 421 int fd; 422 int n; 423 char *cp, *targ; 424 char line[MAXLINE]; 425 struct stat sb; 426 427 if (argc < 2) { 428 strcpy(line, "send "); 429 printf("(file) "); 430 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 431 makeargv(line); 432 argc = margc; 433 argv = margv; 434 } 435 if (argc < 2) { 436 putusage(argv[0]); 437 return; 438 } 439 targ = argv[argc - 1]; 440 if (strrchr(argv[argc - 1], ':')) { 441 char *lcp; 442 443 for (n = 1; n < argc - 1; n++) 444 if (strchr(argv[n], ':')) { 445 putusage(argv[0]); 446 return; 447 } 448 lcp = argv[argc - 1]; 449 targ = strrchr(lcp, ':'); 450 *targ++ = 0; 451 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 452 lcp[strlen(lcp) - 1] = '\0'; 453 lcp++; 454 } 455 setpeer0(lcp, NULL); 456 } 457 if (!connected) { 458 printf("No target machine specified.\n"); 459 return; 460 } 461 if (argc < 4) { 462 cp = argc == 2 ? tail(targ) : argv[1]; 463 fd = open(cp, O_RDONLY); 464 if (fd < 0) { 465 warn("%s", cp); 466 return; 467 } 468 469 stat(cp, &sb); 470 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 471 472 if (verbose) 473 printf("putting %s to %s:%s [%s]\n", 474 cp, hostname, targ, mode); 475 xmitfile(peer, port, fd, targ, mode); 476 return; 477 } 478 /* this assumes the target is a directory */ 479 /* on a remote unix system. hmmmm. */ 480 cp = strchr(targ, '\0'); 481 *cp++ = '/'; 482 for (n = 1; n < argc - 1; n++) { 483 strcpy(cp, tail(argv[n])); 484 fd = open(argv[n], O_RDONLY); 485 if (fd < 0) { 486 warn("%s", argv[n]); 487 continue; 488 } 489 490 stat(cp, &sb); 491 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size); 492 493 if (verbose) 494 printf("putting %s to %s:%s [%s]\n", 495 argv[n], hostname, targ, mode); 496 xmitfile(peer, port, fd, targ, mode); 497 } 498 } 499 500 static void 501 putusage(char *s) 502 { 503 504 printf("usage: %s file [remotename]\n", s); 505 printf(" %s file host:remotename\n", s); 506 printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s); 507 } 508 509 /* 510 * Receive file(s). 511 */ 512 static void 513 get(int argc, char *argv[]) 514 { 515 int fd; 516 int n; 517 char *cp; 518 char *src; 519 char line[MAXLINE]; 520 521 if (argc < 2) { 522 strcpy(line, "get "); 523 printf("(files) "); 524 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 525 makeargv(line); 526 argc = margc; 527 argv = margv; 528 } 529 if (argc < 2) { 530 getusage(argv[0]); 531 return; 532 } 533 if (!connected) { 534 for (n = 1; n < argc ; n++) 535 if (strrchr(argv[n], ':') == 0) { 536 printf("No remote host specified and " 537 "no host given for file '%s'\n", argv[n]); 538 getusage(argv[0]); 539 return; 540 } 541 } 542 for (n = 1; n < argc ; n++) { 543 src = strrchr(argv[n], ':'); 544 if (src == NULL) 545 src = argv[n]; 546 else { 547 char *lcp; 548 549 *src++ = 0; 550 lcp = argv[n]; 551 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') { 552 lcp[strlen(lcp) - 1] = '\0'; 553 lcp++; 554 } 555 setpeer0(lcp, NULL); 556 if (!connected) 557 continue; 558 } 559 if (argc < 4) { 560 cp = argc == 3 ? argv[2] : tail(src); 561 fd = creat(cp, 0644); 562 if (fd < 0) { 563 warn("%s", cp); 564 return; 565 } 566 if (verbose) 567 printf("getting from %s:%s to %s [%s]\n", 568 hostname, src, cp, mode); 569 recvfile(peer, port, fd, src, mode); 570 break; 571 } 572 cp = tail(src); /* new .. jdg */ 573 fd = creat(cp, 0644); 574 if (fd < 0) { 575 warn("%s", cp); 576 continue; 577 } 578 if (verbose) 579 printf("getting from %s:%s to %s [%s]\n", 580 hostname, src, cp, mode); 581 recvfile(peer, port, fd, src, mode); 582 } 583 } 584 585 static void 586 getusage(char *s) 587 { 588 589 printf("usage: %s file [localname]\n", s); 590 printf(" %s [host:]file [localname]\n", s); 591 printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s); 592 } 593 594 static void 595 settimeoutpacket(int argc, char *argv[]) 596 { 597 int t; 598 char line[MAXLINE]; 599 600 if (argc < 2) { 601 strcpy(line, "Packet timeout "); 602 printf("(value) "); 603 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 604 makeargv(line); 605 argc = margc; 606 argv = margv; 607 } 608 if (argc != 2) { 609 printf("usage: %s value\n", argv[0]); 610 return; 611 } 612 t = atoi(argv[1]); 613 if (t < 0) { 614 printf("%s: bad value\n", argv[1]); 615 return; 616 } 617 618 settimeouts(t, timeoutnetwork, maxtimeouts); 619 } 620 621 static void 622 settimeoutnetwork(int argc, char *argv[]) 623 { 624 int t; 625 char line[MAXLINE]; 626 627 if (argc < 2) { 628 strcpy(line, "Network timeout "); 629 printf("(value) "); 630 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin); 631 makeargv(line); 632 argc = margc; 633 argv = margv; 634 } 635 if (argc != 2) { 636 printf("usage: %s value\n", argv[0]); 637 return; 638 } 639 t = atoi(argv[1]); 640 if (t < 0) { 641 printf("%s: bad value\n", argv[1]); 642 return; 643 } 644 645 settimeouts(timeoutpacket, t, maxtimeouts); 646 } 647 648 static void 649 showstatus(int argc __unused, char *argv[] __unused) 650 { 651 652 printf("Remote host: %s\n", 653 connected ? hostname : "none specified yet"); 654 printf("RFC2347 Options support: %s\n", 655 options_rfc_enabled ? "enabled" : "disabled"); 656 printf("Non-RFC defined options support: %s\n", 657 options_extra_enabled ? "enabled" : "disabled"); 658 printf("Mode: %s\n", mode); 659 printf("Verbose: %s\n", verbose ? "on" : "off"); 660 printf("Debug: %s\n", debug_show(debug)); 661 printf("Artificial packetloss: %d in 100 packets\n", 662 packetdroppercentage); 663 printf("Segment size: %d bytes\n", segsize); 664 printf("Network timeout: %d seconds\n", timeoutpacket); 665 printf("Maximum network timeout: %d seconds\n", timeoutnetwork); 666 printf("Maximum timeouts: %d \n", maxtimeouts); 667 } 668 669 static void 670 intr(int dummy __unused) 671 { 672 673 signal(SIGALRM, SIG_IGN); 674 alarm(0); 675 longjmp(toplevel, -1); 676 } 677 678 static char * 679 tail(char *filename) 680 { 681 char *s; 682 683 while (*filename) { 684 s = strrchr(filename, '/'); 685 if (s == NULL) 686 break; 687 if (s[1]) 688 return (s + 1); 689 *s = '\0'; 690 } 691 return (filename); 692 } 693 694 static const char * 695 command_prompt(void) 696 { 697 698 return ("tftp> "); 699 } 700 701 /* 702 * Command parser. 703 */ 704 static void 705 command(void) 706 { 707 HistEvent he; 708 struct cmd *c; 709 static EditLine *el; 710 static History *hist; 711 const char *bp; 712 char *cp; 713 int len, num, vrbose; 714 char line[MAXLINE]; 715 716 vrbose = isatty(0); 717 if (vrbose) { 718 el = el_init("tftp", stdin, stdout, stderr); 719 hist = history_init(); 720 history(hist, &he, H_SETSIZE, 100); 721 el_set(el, EL_HIST, history, hist); 722 el_set(el, EL_EDITOR, "emacs"); 723 el_set(el, EL_PROMPT, command_prompt); 724 el_set(el, EL_SIGNAL, 1); 725 el_source(el, NULL); 726 } 727 for (;;) { 728 if (vrbose) { 729 if ((bp = el_gets(el, &num)) == NULL || num == 0) 730 exit(0); 731 len = (num > MAXLINE) ? MAXLINE : num; 732 memcpy(line, bp, len); 733 line[len] = '\0'; 734 history(hist, &he, H_ENTER, bp); 735 } else { 736 line[0] = 0; 737 if (fgets(line, sizeof line , stdin) == NULL) { 738 if (feof(stdin)) { 739 exit(txrx_error); 740 } else { 741 continue; 742 } 743 } 744 } 745 if ((cp = strchr(line, '\n'))) 746 *cp = '\0'; 747 if (line[0] == 0) 748 continue; 749 makeargv(line); 750 if (margc == 0) 751 continue; 752 c = getcmd(margv[0]); 753 if (c == (struct cmd *)-1) { 754 printf("?Ambiguous command\n"); 755 continue; 756 } 757 if (c == 0) { 758 printf("?Invalid command\n"); 759 continue; 760 } 761 (*c->handler)(margc, margv); 762 } 763 } 764 765 static struct cmd * 766 getcmd(char *name) 767 { 768 const char *p, *q; 769 struct cmd *c, *found; 770 int nmatches, longest; 771 772 longest = 0; 773 nmatches = 0; 774 found = 0; 775 for (c = cmdtab; (p = c->name) != NULL; c++) { 776 for (q = name; *q == *p++; q++) 777 if (*q == 0) /* exact match? */ 778 return (c); 779 if (!*q) { /* the name was a prefix */ 780 if (q - name > longest) { 781 longest = q - name; 782 nmatches = 1; 783 found = c; 784 } else if (q - name == longest) 785 nmatches++; 786 } 787 } 788 if (nmatches > 1) 789 return ((struct cmd *)-1); 790 return (found); 791 } 792 793 /* 794 * Slice a string up into argc/argv. 795 */ 796 static void 797 makeargv(char *line) 798 { 799 char *cp; 800 char **argp = margv; 801 802 margc = 0; 803 if ((cp = strchr(line, '\n')) != NULL) 804 *cp = '\0'; 805 for (cp = line; margc < MAX_MARGV - 1 && *cp != '\0';) { 806 while (isspace(*cp)) 807 cp++; 808 if (*cp == '\0') 809 break; 810 *argp++ = cp; 811 margc += 1; 812 while (*cp != '\0' && !isspace(*cp)) 813 cp++; 814 if (*cp == '\0') 815 break; 816 *cp++ = '\0'; 817 } 818 *argp++ = 0; 819 } 820 821 static void 822 quit(int argc __unused, char *argv[] __unused) 823 { 824 825 exit(txrx_error); 826 } 827 828 /* 829 * Help command. 830 */ 831 static void 832 help(int argc, char *argv[]) 833 { 834 struct cmd *c; 835 836 if (argc == 1) { 837 printf("Commands may be abbreviated. Commands are:\n\n"); 838 for (c = cmdtab; c->name; c++) 839 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help); 840 841 printf("\n[-] : You shouldn't use these ones anymore.\n"); 842 printf("[*] : RFC2347 options support required.\n"); 843 printf("[**] : Non-standard RFC2347 option.\n"); 844 return; 845 } 846 while (--argc > 0) { 847 char *arg; 848 arg = *++argv; 849 c = getcmd(arg); 850 if (c == (struct cmd *)-1) 851 printf("?Ambiguous help command: %s\n", arg); 852 else if (c == (struct cmd *)0) 853 printf("?Invalid help command: %s\n", arg); 854 else 855 printf("%s\n", c->help); 856 } 857 } 858 859 static void 860 setverbose(int argc __unused, char *argv[] __unused) 861 { 862 863 verbose = !verbose; 864 printf("Verbose mode %s.\n", verbose ? "on" : "off"); 865 } 866 867 static void 868 setoptions(int argc, char *argv[]) 869 { 870 871 if (argc == 2) { 872 if (strcasecmp(argv[1], "enable") == 0 || 873 strcasecmp(argv[1], "on") == 0) { 874 options_extra_enabled = 1; 875 options_rfc_enabled = 1; 876 } 877 if (strcasecmp(argv[1], "disable") == 0 || 878 strcasecmp(argv[1], "off") == 0) { 879 options_extra_enabled = 0; 880 options_rfc_enabled = 0; 881 } 882 if (strcasecmp(argv[1], "extra") == 0) 883 options_extra_enabled = !options_extra_enabled; 884 } 885 printf("Support for RFC2347 style options are now %s.\n", 886 options_rfc_enabled ? "enabled" : "disabled"); 887 printf("Support for non-RFC defined options are now %s.\n", 888 options_extra_enabled ? "enabled" : "disabled"); 889 890 printf("\nThe following options are available:\n" 891 "\toptions on : enable support for RFC2347 style options\n" 892 "\toptions off : disable support for RFC2347 style options\n" 893 "\toptions extra : toggle support for non-RFC defined options\n" 894 ); 895 } 896 897 static void 898 setrollover(int argc, char *argv[]) 899 { 900 901 if (argc == 2) { 902 if (strcasecmp(argv[1], "never") == 0 || 903 strcasecmp(argv[1], "none") == 0) { 904 free(options[OPT_ROLLOVER].o_request); 905 options[OPT_ROLLOVER].o_request = NULL; 906 } 907 if (strcasecmp(argv[1], "1") == 0) { 908 free(options[OPT_ROLLOVER].o_request); 909 options[OPT_ROLLOVER].o_request = strdup("1"); 910 } 911 if (strcasecmp(argv[1], "0") == 0) { 912 free(options[OPT_ROLLOVER].o_request); 913 options[OPT_ROLLOVER].o_request = strdup("0"); 914 } 915 } 916 printf("Support for the rollover options is %s.\n", 917 options[OPT_ROLLOVER].o_request != NULL ? "enabled" : "disabled"); 918 if (options[OPT_ROLLOVER].o_request != NULL) 919 printf("Block rollover will be to block %s.\n", 920 options[OPT_ROLLOVER].o_request); 921 922 923 printf("\nThe following rollover options are available:\n" 924 "\trollover 0 : rollover to block zero (default)\n" 925 "\trollover 1 : rollover to block one\n" 926 "\trollover never : do not support the rollover option\n" 927 "\trollover none : do not support the rollover option\n" 928 ); 929 } 930 931 static void 932 setdebug(int argc, char *argv[]) 933 { 934 int i; 935 936 if (argc != 1) { 937 i = 1; 938 while (i < argc) 939 debug ^= debug_find(argv[i++]); 940 } 941 printf("The following debugging is enabled: %s\n", debug_show(debug)); 942 943 printf("\nThe following debugs are available:\n"); 944 i = 0; 945 while (debugs[i].name != NULL) { 946 printf("\t%s\t%s\n", debugs[i].name, debugs[i].desc); 947 i++; 948 } 949 } 950 951 static void 952 setblocksize(int argc, char *argv[]) 953 { 954 955 if (!options_rfc_enabled) 956 printf("RFC2347 style options are not enabled " 957 "(but proceeding anyway)\n"); 958 959 if (argc != 1) { 960 int size = atoi(argv[1]); 961 size_t max; 962 u_long maxdgram; 963 964 max = sizeof(maxdgram); 965 if (sysctlbyname("net.inet.udp.maxdgram", 966 &maxdgram, &max, NULL, 0) < 0) { 967 perror("sysctl: net.inet.udp.maxdgram"); 968 return; 969 } 970 971 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 972 printf("Blocksize should be between %d and %d bytes.\n", 973 BLKSIZE_MIN, BLKSIZE_MAX); 974 return; 975 } else if (size > (int)maxdgram - 4) { 976 printf("Blocksize can't be bigger than %ld bytes due " 977 "to the net.inet.udp.maxdgram sysctl limitation.\n", 978 maxdgram - 4); 979 asprintf(&options[OPT_BLKSIZE].o_request, 980 "%ld", maxdgram - 4); 981 } else { 982 asprintf(&options[OPT_BLKSIZE].o_request, "%d", size); 983 } 984 } 985 printf("Blocksize is now %s bytes.\n", options[OPT_BLKSIZE].o_request); 986 } 987 988 static void 989 setblocksize2(int argc, char *argv[]) 990 { 991 992 if (!options_rfc_enabled || !options_extra_enabled) 993 printf( 994 "RFC2347 style or non-RFC defined options are not enabled " 995 "(but proceeding anyway)\n"); 996 997 if (argc != 1) { 998 int size = atoi(argv[1]); 999 int i; 1000 size_t max; 1001 u_long maxdgram; 1002 1003 int sizes[] = { 1004 8, 16, 32, 64, 128, 256, 512, 1024, 1005 2048, 4096, 8192, 16384, 32768, 0 1006 }; 1007 1008 max = sizeof(maxdgram); 1009 if (sysctlbyname("net.inet.udp.maxdgram", 1010 &maxdgram, &max, NULL, 0) < 0) { 1011 perror("sysctl: net.inet.udp.maxdgram"); 1012 return; 1013 } 1014 1015 for (i = 0; sizes[i] != 0; i++) { 1016 if (sizes[i] == size) break; 1017 } 1018 if (sizes[i] == 0) { 1019 printf("Blocksize2 should be a power of two between " 1020 "8 and 32768.\n"); 1021 return; 1022 } 1023 1024 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) { 1025 printf("Blocksize2 should be between " 1026 "%d and %d bytes.\n", BLKSIZE_MIN, BLKSIZE_MAX); 1027 return; 1028 } else if (size > (int)maxdgram - 4) { 1029 printf("Blocksize2 can't be bigger than %ld bytes due " 1030 "to the net.inet.udp.maxdgram sysctl limitation.\n", 1031 maxdgram - 4); 1032 for (i = 0; sizes[i+1] != 0; i++) { 1033 if ((int)maxdgram < sizes[i+1]) break; 1034 } 1035 asprintf(&options[OPT_BLKSIZE2].o_request, 1036 "%d", sizes[i]); 1037 } else { 1038 asprintf(&options[OPT_BLKSIZE2].o_request, "%d", size); 1039 } 1040 } 1041 printf("Blocksize2 is now %s bytes.\n", 1042 options[OPT_BLKSIZE2].o_request); 1043 } 1044 1045 static void 1046 setpacketdrop(int argc, char *argv[]) 1047 { 1048 1049 if (argc != 1) 1050 packetdroppercentage = atoi(argv[1]); 1051 1052 printf("Randomly %d in 100 packets will be dropped\n", 1053 packetdroppercentage); 1054 } 1055