1 /* $NetBSD: util.c,v 1.116 2004/07/20 10:40:22 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1997-2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Luke Mewburn. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 12 * NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the NetBSD 25 * Foundation, Inc. and its contributors. 26 * 4. Neither the name of The NetBSD Foundation nor the names of its 27 * contributors may be used to endorse or promote products derived 28 * from this software without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 40 * POSSIBILITY OF SUCH DAMAGE. 41 */ 42 43 /* 44 * Copyright (c) 1985, 1989, 1993, 1994 45 * The Regents of the University of California. All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 */ 71 72 #include <sys/cdefs.h> 73 #ifndef lint 74 __RCSID("$NetBSD: util.c,v 1.116 2004/07/20 10:40:22 lukem Exp $"); 75 #endif /* not lint */ 76 77 /* 78 * FTP User Program -- Misc support routines 79 */ 80 #include <sys/types.h> 81 #include <sys/socket.h> 82 #include <sys/ioctl.h> 83 #include <sys/time.h> 84 #include <netinet/in.h> 85 #include <arpa/ftp.h> 86 87 #include <ctype.h> 88 #include <err.h> 89 #include <errno.h> 90 #include <fcntl.h> 91 #include <glob.h> 92 #include <signal.h> 93 #include <limits.h> 94 #include <netdb.h> 95 #include <stdio.h> 96 #include <stdlib.h> 97 #include <string.h> 98 #include <termios.h> 99 #include <time.h> 100 #include <tzfile.h> 101 #include <unistd.h> 102 103 #include "ftp_var.h" 104 105 /* 106 * Connect to peer server and auto-login, if possible. 107 */ 108 void 109 setpeer(int argc, char *argv[]) 110 { 111 char *host; 112 char *port; 113 114 if (argc == 0) 115 goto usage; 116 if (connected) { 117 fprintf(ttyout, "Already connected to %s, use close first.\n", 118 hostname); 119 code = -1; 120 return; 121 } 122 if (argc < 2) 123 (void)another(&argc, &argv, "to"); 124 if (argc < 2 || argc > 3) { 125 usage: 126 fprintf(ttyout, "usage: %s host-name [port]\n", argv[0]); 127 code = -1; 128 return; 129 } 130 if (gatemode) 131 port = gateport; 132 else 133 port = ftpport; 134 if (argc > 2) 135 port = argv[2]; 136 137 if (gatemode) { 138 if (gateserver == NULL || *gateserver == '\0') 139 errx(1, "gateserver not defined (shouldn't happen)"); 140 host = hookup(gateserver, port); 141 } else 142 host = hookup(argv[1], port); 143 144 if (host) { 145 if (gatemode && verbose) { 146 fprintf(ttyout, 147 "Connecting via pass-through server %s\n", 148 gateserver); 149 } 150 151 connected = 1; 152 /* 153 * Set up defaults for FTP. 154 */ 155 (void)strlcpy(typename, "ascii", sizeof(typename)); 156 type = TYPE_A; 157 curtype = TYPE_A; 158 (void)strlcpy(formname, "non-print", sizeof(formname)); 159 form = FORM_N; 160 (void)strlcpy(modename, "stream", sizeof(modename)); 161 mode = MODE_S; 162 (void)strlcpy(structname, "file", sizeof(structname)); 163 stru = STRU_F; 164 (void)strlcpy(bytename, "8", sizeof(bytename)); 165 bytesize = 8; 166 if (autologin) 167 (void)ftp_login(argv[1], NULL, NULL); 168 } 169 } 170 171 static void 172 parse_feat(const char *line) 173 { 174 175 /* 176 * work-around broken ProFTPd servers that can't 177 * even obey RFC 2389. 178 */ 179 while (*line && isspace((int)*line)) 180 line++; 181 182 if (strcasecmp(line, "MDTM") == 0) 183 features[FEAT_MDTM] = 1; 184 else if (strncasecmp(line, "MLST", sizeof("MLST") - 1) == 0) { 185 features[FEAT_MLST] = 1; 186 } else if (strcasecmp(line, "REST STREAM") == 0) 187 features[FEAT_REST_STREAM] = 1; 188 else if (strcasecmp(line, "SIZE") == 0) 189 features[FEAT_SIZE] = 1; 190 else if (strcasecmp(line, "TVFS") == 0) 191 features[FEAT_TVFS] = 1; 192 } 193 194 /* 195 * Determine the remote system type (SYST) and features (FEAT). 196 * Call after a successful login (i.e, connected = -1) 197 */ 198 void 199 getremoteinfo(void) 200 { 201 int overbose, i; 202 203 overbose = verbose; 204 if (debug == 0) 205 verbose = -1; 206 207 /* determine remote system type */ 208 if (command("SYST") == COMPLETE) { 209 if (overbose) { 210 char *cp, c; 211 212 c = 0; 213 cp = strchr(reply_string + 4, ' '); 214 if (cp == NULL) 215 cp = strchr(reply_string + 4, '\r'); 216 if (cp) { 217 if (cp[-1] == '.') 218 cp--; 219 c = *cp; 220 *cp = '\0'; 221 } 222 223 fprintf(ttyout, "Remote system type is %s.\n", 224 reply_string + 4); 225 if (cp) 226 *cp = c; 227 } 228 if (!strncmp(reply_string, "215 UNIX Type: L8", 17)) { 229 if (proxy) 230 unix_proxy = 1; 231 else 232 unix_server = 1; 233 /* 234 * Set type to 0 (not specified by user), 235 * meaning binary by default, but don't bother 236 * telling server. We can use binary 237 * for text files unless changed by the user. 238 */ 239 type = 0; 240 (void)strlcpy(typename, "binary", sizeof(typename)); 241 if (overbose) 242 fprintf(ttyout, 243 "Using %s mode to transfer files.\n", 244 typename); 245 } else { 246 if (proxy) 247 unix_proxy = 0; 248 else 249 unix_server = 0; 250 if (overbose && 251 !strncmp(reply_string, "215 TOPS20", 10)) 252 fputs( 253 "Remember to set tenex mode when transferring binary files from this machine.\n", 254 ttyout); 255 } 256 } 257 258 /* determine features (if any) */ 259 for (i = 0; i < FEAT_max; i++) 260 features[i] = -1; 261 reply_callback = parse_feat; 262 if (command("FEAT") == COMPLETE) { 263 for (i = 0; i < FEAT_max; i++) { 264 if (features[i] == -1) 265 features[i] = 0; 266 } 267 features[FEAT_FEAT] = 1; 268 } else 269 features[FEAT_FEAT] = 0; 270 if (debug) { 271 #define DEBUG_FEAT(x) fprintf(ttyout, "features[" #x "] = %d\n", features[(x)]) 272 DEBUG_FEAT(FEAT_FEAT); 273 DEBUG_FEAT(FEAT_MDTM); 274 DEBUG_FEAT(FEAT_MLST); 275 DEBUG_FEAT(FEAT_REST_STREAM); 276 DEBUG_FEAT(FEAT_SIZE); 277 DEBUG_FEAT(FEAT_TVFS); 278 #undef DEBUG_FEAT 279 } 280 reply_callback = NULL; 281 282 verbose = overbose; 283 } 284 285 /* 286 * Reset the various variables that indicate connection state back to 287 * disconnected settings. 288 * The caller is responsible for issuing any commands to the remote server 289 * to perform a clean shutdown before this is invoked. 290 */ 291 void 292 cleanuppeer(void) 293 { 294 295 if (cout) 296 (void)fclose(cout); 297 cout = NULL; 298 connected = 0; 299 unix_server = 0; 300 unix_proxy = 0; 301 /* 302 * determine if anonftp was specifically set with -a 303 * (1), or implicitly set by auto_fetch() (2). in the 304 * latter case, disable after the current xfer 305 */ 306 if (anonftp == 2) 307 anonftp = 0; 308 data = -1; 309 epsv4bad = 0; 310 if (username) 311 free(username); 312 username = NULL; 313 if (!proxy) 314 macnum = 0; 315 } 316 317 /* 318 * Top-level signal handler for interrupted commands. 319 */ 320 void 321 intr(int signo) 322 { 323 324 sigint_raised = 1; 325 alarmtimer(0); 326 if (fromatty) 327 write(fileno(ttyout), "\n", 1); 328 siglongjmp(toplevel, 1); 329 } 330 331 /* 332 * Signal handler for lost connections; cleanup various elements of 333 * the connection state, and call cleanuppeer() to finish it off. 334 */ 335 void 336 lostpeer(int dummy) 337 { 338 int oerrno = errno; 339 340 alarmtimer(0); 341 if (connected) { 342 if (cout != NULL) { 343 (void)shutdown(fileno(cout), 1+1); 344 (void)fclose(cout); 345 cout = NULL; 346 } 347 if (data >= 0) { 348 (void)shutdown(data, 1+1); 349 (void)close(data); 350 data = -1; 351 } 352 connected = 0; 353 } 354 pswitch(1); 355 if (connected) { 356 if (cout != NULL) { 357 (void)shutdown(fileno(cout), 1+1); 358 (void)fclose(cout); 359 cout = NULL; 360 } 361 connected = 0; 362 } 363 proxflag = 0; 364 pswitch(0); 365 cleanuppeer(); 366 errno = oerrno; 367 } 368 369 370 /* 371 * Login to remote host, using given username & password if supplied. 372 * Return non-zero if successful. 373 */ 374 int 375 ftp_login(const char *host, const char *user, const char *pass) 376 { 377 char tmp[80]; 378 const char *acct; 379 int n, aflag, rval, freeuser, freepass, freeacct; 380 381 acct = NULL; 382 aflag = rval = freeuser = freepass = freeacct = 0; 383 384 if (debug) 385 fprintf(ttyout, "ftp_login: user `%s' pass `%s' host `%s'\n", 386 user ? user : "<null>", pass ? pass : "<null>", 387 host ? host : "<null>"); 388 389 390 /* 391 * Set up arguments for an anonymous FTP session, if necessary. 392 */ 393 if (anonftp) { 394 user = "anonymous"; /* as per RFC 1635 */ 395 pass = getoptionvalue("anonpass"); 396 } 397 398 if (user == NULL) 399 freeuser = 1; 400 if (pass == NULL) 401 freepass = 1; 402 freeacct = 1; 403 if (ruserpass(host, &user, &pass, &acct) < 0) { 404 code = -1; 405 goto cleanup_ftp_login; 406 } 407 408 while (user == NULL) { 409 if (localname) 410 fprintf(ttyout, "Name (%s:%s): ", host, localname); 411 else 412 fprintf(ttyout, "Name (%s): ", host); 413 *tmp = '\0'; 414 if (fgets(tmp, sizeof(tmp) - 1, stdin) == NULL) { 415 fprintf(ttyout, "\nEOF received; login aborted.\n"); 416 clearerr(stdin); 417 code = -1; 418 goto cleanup_ftp_login; 419 } 420 tmp[strlen(tmp) - 1] = '\0'; 421 freeuser = 0; 422 if (*tmp == '\0') 423 user = localname; 424 else 425 user = tmp; 426 } 427 428 if (gatemode) { 429 char *nuser; 430 int len; 431 432 len = strlen(user) + 1 + strlen(host) + 1; 433 nuser = xmalloc(len); 434 (void)strlcpy(nuser, user, len); 435 (void)strlcat(nuser, "@", len); 436 (void)strlcat(nuser, host, len); 437 freeuser = 1; 438 user = nuser; 439 } 440 441 n = command("USER %s", user); 442 if (n == CONTINUE) { 443 if (pass == NULL) { 444 freepass = 0; 445 pass = getpass("Password:"); 446 } 447 n = command("PASS %s", pass); 448 } 449 if (n == CONTINUE) { 450 aflag++; 451 if (acct == NULL) { 452 freeacct = 0; 453 acct = getpass("Account:"); 454 } 455 if (acct[0] == '\0') { 456 warnx("Login failed."); 457 goto cleanup_ftp_login; 458 } 459 n = command("ACCT %s", acct); 460 } 461 if ((n != COMPLETE) || 462 (!aflag && acct != NULL && command("ACCT %s", acct) != COMPLETE)) { 463 warnx("Login failed."); 464 goto cleanup_ftp_login; 465 } 466 rval = 1; 467 username = xstrdup(user); 468 if (proxy) 469 goto cleanup_ftp_login; 470 471 connected = -1; 472 getremoteinfo(); 473 for (n = 0; n < macnum; ++n) { 474 if (!strcmp("init", macros[n].mac_name)) { 475 (void)strlcpy(line, "$init", sizeof(line)); 476 makeargv(); 477 domacro(margc, margv); 478 break; 479 } 480 } 481 updateremotepwd(); 482 483 cleanup_ftp_login: 484 if (user != NULL && freeuser) 485 free((char *)user); 486 if (pass != NULL && freepass) 487 free((char *)pass); 488 if (acct != NULL && freeacct) 489 free((char *)acct); 490 return (rval); 491 } 492 493 /* 494 * `another' gets another argument, and stores the new argc and argv. 495 * It reverts to the top level (via intr()) on EOF/error. 496 * 497 * Returns false if no new arguments have been added. 498 */ 499 int 500 another(int *pargc, char ***pargv, const char *prompt) 501 { 502 int len = strlen(line), ret; 503 504 if (len >= sizeof(line) - 3) { 505 fputs("sorry, arguments too long.\n", ttyout); 506 intr(0); 507 } 508 fprintf(ttyout, "(%s) ", prompt); 509 line[len++] = ' '; 510 if (fgets(&line[len], sizeof(line) - len, stdin) == NULL) { 511 clearerr(stdin); 512 intr(0); 513 } 514 len += strlen(&line[len]); 515 if (len > 0 && line[len - 1] == '\n') 516 line[len - 1] = '\0'; 517 makeargv(); 518 ret = margc > *pargc; 519 *pargc = margc; 520 *pargv = margv; 521 return (ret); 522 } 523 524 /* 525 * glob files given in argv[] from the remote server. 526 * if errbuf isn't NULL, store error messages there instead 527 * of writing to the screen. 528 */ 529 char * 530 remglob(char *argv[], int doswitch, char **errbuf) 531 { 532 char temp[MAXPATHLEN]; 533 static char buf[MAXPATHLEN]; 534 static FILE *ftemp = NULL; 535 static char **args; 536 int oldverbose, oldhash, oldprogress, fd, len; 537 char *cp, *mode; 538 539 if (!mflag || !connected) { 540 if (!doglob) 541 args = NULL; 542 else { 543 if (ftemp) { 544 (void)fclose(ftemp); 545 ftemp = NULL; 546 } 547 } 548 return (NULL); 549 } 550 if (!doglob) { 551 if (args == NULL) 552 args = argv; 553 if ((cp = *++args) == NULL) 554 args = NULL; 555 return (cp); 556 } 557 if (ftemp == NULL) { 558 len = strlcpy(temp, tmpdir, sizeof(temp)); 559 if (temp[len - 1] != '/') 560 (void)strlcat(temp, "/", sizeof(temp)); 561 (void)strlcat(temp, TMPFILE, sizeof(temp)); 562 if ((fd = mkstemp(temp)) < 0) { 563 warn("unable to create temporary file %s", temp); 564 return (NULL); 565 } 566 close(fd); 567 oldverbose = verbose; 568 verbose = (errbuf != NULL) ? -1 : 0; 569 oldhash = hash; 570 oldprogress = progress; 571 hash = 0; 572 progress = 0; 573 if (doswitch) 574 pswitch(!proxy); 575 for (mode = "w"; *++argv != NULL; mode = "a") 576 recvrequest("NLST", temp, *argv, mode, 0, 0); 577 if ((code / 100) != COMPLETE) { 578 if (errbuf != NULL) 579 *errbuf = reply_string; 580 } 581 if (doswitch) 582 pswitch(!proxy); 583 verbose = oldverbose; 584 hash = oldhash; 585 progress = oldprogress; 586 ftemp = fopen(temp, "r"); 587 (void)unlink(temp); 588 if (ftemp == NULL) { 589 if (errbuf == NULL) 590 fputs( 591 "can't find list of remote files, oops.\n", 592 ttyout); 593 else 594 *errbuf = 595 "can't find list of remote files, oops."; 596 return (NULL); 597 } 598 } 599 if (fgets(buf, sizeof(buf), ftemp) == NULL) { 600 (void)fclose(ftemp); 601 ftemp = NULL; 602 return (NULL); 603 } 604 if ((cp = strchr(buf, '\n')) != NULL) 605 *cp = '\0'; 606 return (buf); 607 } 608 609 /* 610 * Glob a local file name specification with the expectation of a single 611 * return value. Can't control multiple values being expanded from the 612 * expression, we return only the first. 613 * Returns NULL on error, or a pointer to a buffer containing the filename 614 * that's the caller's responsiblity to free(3) when finished with. 615 */ 616 char * 617 globulize(const char *pattern) 618 { 619 glob_t gl; 620 int flags; 621 char *p; 622 623 if (!doglob) 624 return (xstrdup(pattern)); 625 626 flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_TILDE; 627 memset(&gl, 0, sizeof(gl)); 628 if (glob(pattern, flags, NULL, &gl) || gl.gl_pathc == 0) { 629 warnx("%s: not found", pattern); 630 globfree(&gl); 631 return (NULL); 632 } 633 p = xstrdup(gl.gl_pathv[0]); 634 globfree(&gl); 635 return (p); 636 } 637 638 /* 639 * determine size of remote file 640 */ 641 off_t 642 remotesize(const char *file, int noisy) 643 { 644 int overbose, r; 645 off_t size; 646 647 overbose = verbose; 648 size = -1; 649 if (debug == 0) 650 verbose = -1; 651 if (! features[FEAT_SIZE]) { 652 if (noisy) 653 fprintf(ttyout, 654 "SIZE is not supported by remote server.\n"); 655 goto cleanup_remotesize; 656 } 657 r = command("SIZE %s", file); 658 if (r == COMPLETE) { 659 char *cp, *ep; 660 661 cp = strchr(reply_string, ' '); 662 if (cp != NULL) { 663 cp++; 664 size = STRTOLL(cp, &ep, 10); 665 if (*ep != '\0' && !isspace((unsigned char)*ep)) 666 size = -1; 667 } 668 } else { 669 if (r == ERROR && code == 500 && features[FEAT_SIZE] == -1) 670 features[FEAT_SIZE] = 0; 671 if (noisy && debug == 0) { 672 fputs(reply_string, ttyout); 673 putc('\n', ttyout); 674 } 675 } 676 cleanup_remotesize: 677 verbose = overbose; 678 return (size); 679 } 680 681 /* 682 * determine last modification time (in GMT) of remote file 683 */ 684 time_t 685 remotemodtime(const char *file, int noisy) 686 { 687 int overbose, ocode, r; 688 time_t rtime; 689 690 overbose = verbose; 691 ocode = code; 692 rtime = -1; 693 if (debug == 0) 694 verbose = -1; 695 if (! features[FEAT_MDTM]) { 696 if (noisy) 697 fprintf(ttyout, 698 "MDTM is not supported by remote server.\n"); 699 goto cleanup_parse_time; 700 } 701 r = command("MDTM %s", file); 702 if (r == COMPLETE) { 703 struct tm timebuf; 704 char *timestr, *frac; 705 int yy, mo, day, hour, min, sec; 706 707 /* 708 * time-val = 14DIGIT [ "." 1*DIGIT ] 709 * YYYYMMDDHHMMSS[.sss] 710 * mdtm-response = "213" SP time-val CRLF / error-response 711 */ 712 timestr = reply_string + 4; 713 714 /* 715 * parse fraction. 716 * XXX: ignored for now 717 */ 718 frac = strchr(timestr, '\r'); 719 if (frac != NULL) 720 *frac = '\0'; 721 frac = strchr(timestr, '.'); 722 if (frac != NULL) 723 *frac++ = '\0'; 724 if (strlen(timestr) == 15 && strncmp(timestr, "191", 3) == 0) { 725 /* 726 * XXX: Workaround for lame ftpd's that return 727 * `19100' instead of `2000' 728 */ 729 fprintf(ttyout, 730 "Y2K warning! Incorrect time-val `%s' received from server.\n", 731 timestr); 732 timestr++; 733 timestr[0] = '2'; 734 timestr[1] = '0'; 735 fprintf(ttyout, "Converted to `%s'\n", timestr); 736 } 737 if (strlen(timestr) != 14 || 738 sscanf(timestr, "%04d%02d%02d%02d%02d%02d", 739 &yy, &mo, &day, &hour, &min, &sec) != 6) { 740 bad_parse_time: 741 fprintf(ttyout, "Can't parse time `%s'.\n", timestr); 742 goto cleanup_parse_time; 743 } 744 memset(&timebuf, 0, sizeof(timebuf)); 745 timebuf.tm_sec = sec; 746 timebuf.tm_min = min; 747 timebuf.tm_hour = hour; 748 timebuf.tm_mday = day; 749 timebuf.tm_mon = mo - 1; 750 timebuf.tm_year = yy - TM_YEAR_BASE; 751 timebuf.tm_isdst = -1; 752 rtime = timegm(&timebuf); 753 if (rtime == -1) { 754 if (noisy || debug != 0) 755 goto bad_parse_time; 756 else 757 goto cleanup_parse_time; 758 } else if (debug) 759 fprintf(ttyout, "parsed date as: %s", ctime(&rtime)); 760 } else { 761 if (r == ERROR && code == 500 && features[FEAT_MDTM] == -1) 762 features[FEAT_MDTM] = 0; 763 if (noisy && debug == 0) { 764 fputs(reply_string, ttyout); 765 putc('\n', ttyout); 766 } 767 } 768 cleanup_parse_time: 769 verbose = overbose; 770 if (rtime == -1) 771 code = ocode; 772 return (rtime); 773 } 774 775 /* 776 * update global `remotepwd', which contains the state of the remote cwd 777 */ 778 void 779 updateremotepwd(void) 780 { 781 int overbose, ocode, i; 782 char *cp; 783 784 overbose = verbose; 785 ocode = code; 786 if (debug == 0) 787 verbose = -1; 788 if (command("PWD") != COMPLETE) 789 goto badremotepwd; 790 cp = strchr(reply_string, ' '); 791 if (cp == NULL || cp[0] == '\0' || cp[1] != '"') 792 goto badremotepwd; 793 cp += 2; 794 for (i = 0; *cp && i < sizeof(remotepwd) - 1; i++, cp++) { 795 if (cp[0] == '"') { 796 if (cp[1] == '"') 797 cp++; 798 else 799 break; 800 } 801 remotepwd[i] = *cp; 802 } 803 remotepwd[i] = '\0'; 804 if (debug) 805 fprintf(ttyout, "got remotepwd as `%s'\n", remotepwd); 806 goto cleanupremotepwd; 807 badremotepwd: 808 remotepwd[0]='\0'; 809 cleanupremotepwd: 810 verbose = overbose; 811 code = ocode; 812 } 813 814 815 /* 816 * List words in stringlist, vertically arranged 817 */ 818 void 819 list_vertical(StringList *sl) 820 { 821 int i, j, w; 822 int columns, width, lines; 823 char *p; 824 825 width = 0; 826 827 for (i = 0 ; i < sl->sl_cur ; i++) { 828 w = strlen(sl->sl_str[i]); 829 if (w > width) 830 width = w; 831 } 832 width = (width + 8) &~ 7; 833 834 columns = ttywidth / width; 835 if (columns == 0) 836 columns = 1; 837 lines = (sl->sl_cur + columns - 1) / columns; 838 for (i = 0; i < lines; i++) { 839 for (j = 0; j < columns; j++) { 840 p = sl->sl_str[j * lines + i]; 841 if (p) 842 fputs(p, ttyout); 843 if (j * lines + i + lines >= sl->sl_cur) { 844 putc('\n', ttyout); 845 break; 846 } 847 w = strlen(p); 848 while (w < width) { 849 w = (w + 8) &~ 7; 850 (void)putc('\t', ttyout); 851 } 852 } 853 } 854 } 855 856 /* 857 * Update the global ttywidth value, using TIOCGWINSZ. 858 */ 859 void 860 setttywidth(int a) 861 { 862 struct winsize winsize; 863 int oerrno = errno; 864 865 if (ioctl(fileno(ttyout), TIOCGWINSZ, &winsize) != -1 && 866 winsize.ws_col != 0) 867 ttywidth = winsize.ws_col; 868 else 869 ttywidth = 80; 870 errno = oerrno; 871 } 872 873 /* 874 * Change the rate limit up (SIGUSR1) or down (SIGUSR2) 875 */ 876 void 877 crankrate(int sig) 878 { 879 880 switch (sig) { 881 case SIGUSR1: 882 if (rate_get) 883 rate_get += rate_get_incr; 884 if (rate_put) 885 rate_put += rate_put_incr; 886 break; 887 case SIGUSR2: 888 if (rate_get && rate_get > rate_get_incr) 889 rate_get -= rate_get_incr; 890 if (rate_put && rate_put > rate_put_incr) 891 rate_put -= rate_put_incr; 892 break; 893 default: 894 err(1, "crankrate invoked with unknown signal: %d", sig); 895 } 896 } 897 898 899 /* 900 * Setup or cleanup EditLine structures 901 */ 902 #ifndef NO_EDITCOMPLETE 903 void 904 controlediting(void) 905 { 906 if (editing && el == NULL && hist == NULL) { 907 HistEvent ev; 908 int editmode; 909 910 el = el_init(getprogname(), stdin, ttyout, stderr); 911 /* init editline */ 912 hist = history_init(); /* init the builtin history */ 913 history(hist, &ev, H_SETSIZE, 100);/* remember 100 events */ 914 el_set(el, EL_HIST, history, hist); /* use history */ 915 916 el_set(el, EL_EDITOR, "emacs"); /* default editor is emacs */ 917 el_set(el, EL_PROMPT, prompt); /* set the prompt functions */ 918 el_set(el, EL_RPROMPT, rprompt); 919 920 /* add local file completion, bind to TAB */ 921 el_set(el, EL_ADDFN, "ftp-complete", 922 "Context sensitive argument completion", 923 complete); 924 el_set(el, EL_BIND, "^I", "ftp-complete", NULL); 925 el_source(el, NULL); /* read ~/.editrc */ 926 if ((el_get(el, EL_EDITMODE, &editmode) != -1) && editmode == 0) 927 editing = 0; /* the user doesn't want editing, 928 * so disable, and let statement 929 * below cleanup */ 930 else 931 el_set(el, EL_SIGNAL, 1); 932 } 933 if (!editing) { 934 if (hist) { 935 history_end(hist); 936 hist = NULL; 937 } 938 if (el) { 939 el_end(el); 940 el = NULL; 941 } 942 } 943 } 944 #endif /* !NO_EDITCOMPLETE */ 945 946 /* 947 * Convert the string `arg' to an int, which may have an optional SI suffix 948 * (`b', `k', `m', `g'). Returns the number for success, -1 otherwise. 949 */ 950 int 951 strsuftoi(const char *arg) 952 { 953 char *cp; 954 long val; 955 956 if (!isdigit((unsigned char)arg[0])) 957 return (-1); 958 959 val = strtol(arg, &cp, 10); 960 if (cp != NULL) { 961 if (cp[0] != '\0' && cp[1] != '\0') 962 return (-1); 963 switch (tolower((unsigned char)cp[0])) { 964 case '\0': 965 case 'b': 966 break; 967 case 'k': 968 val <<= 10; 969 break; 970 case 'm': 971 val <<= 20; 972 break; 973 case 'g': 974 val <<= 30; 975 break; 976 default: 977 return (-1); 978 } 979 } 980 if (val < 0 || val > INT_MAX) 981 return (-1); 982 983 return (val); 984 } 985 986 /* 987 * Set up socket buffer sizes before a connection is made. 988 */ 989 void 990 setupsockbufsize(int sock) 991 { 992 993 if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, (void *) &sndbuf_size, 994 sizeof(rcvbuf_size)) < 0) 995 warn("unable to set sndbuf size %d", sndbuf_size); 996 997 if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (void *) &rcvbuf_size, 998 sizeof(rcvbuf_size)) < 0) 999 warn("unable to set rcvbuf size %d", rcvbuf_size); 1000 } 1001 1002 /* 1003 * Copy characters from src into dst, \ quoting characters that require it 1004 */ 1005 void 1006 ftpvis(char *dst, size_t dstlen, const char *src, size_t srclen) 1007 { 1008 int di, si; 1009 1010 for (di = si = 0; 1011 src[si] != '\0' && di < dstlen && si < srclen; 1012 di++, si++) { 1013 switch (src[si]) { 1014 case '\\': 1015 case ' ': 1016 case '\t': 1017 case '\r': 1018 case '\n': 1019 case '"': 1020 dst[di++] = '\\'; 1021 if (di >= dstlen) 1022 break; 1023 /* FALLTHROUGH */ 1024 default: 1025 dst[di] = src[si]; 1026 } 1027 } 1028 dst[di] = '\0'; 1029 } 1030 1031 /* 1032 * Copy src into buf (which is len bytes long), expanding % sequences. 1033 */ 1034 void 1035 formatbuf(char *buf, size_t len, const char *src) 1036 { 1037 const char *p; 1038 char *p2, *q; 1039 int i, op, updirs, pdirs; 1040 1041 #define ADDBUF(x) do { \ 1042 if (i >= len - 1) \ 1043 goto endbuf; \ 1044 buf[i++] = (x); \ 1045 } while (0) 1046 1047 p = src; 1048 for (i = 0; *p; p++) { 1049 if (*p != '%') { 1050 ADDBUF(*p); 1051 continue; 1052 } 1053 p++; 1054 1055 switch (op = *p) { 1056 1057 case '/': 1058 case '.': 1059 case 'c': 1060 p2 = connected ? remotepwd : ""; 1061 updirs = pdirs = 0; 1062 1063 /* option to determine fixed # of dirs from path */ 1064 if (op == '.' || op == 'c') { 1065 int skip; 1066 1067 q = p2; 1068 while (*p2) /* calc # of /'s */ 1069 if (*p2++ == '/') 1070 updirs++; 1071 if (p[1] == '0') { /* print <x> or ... */ 1072 pdirs = 1; 1073 p++; 1074 } 1075 if (p[1] >= '1' && p[1] <= '9') { 1076 /* calc # to skip */ 1077 skip = p[1] - '0'; 1078 p++; 1079 } else 1080 skip = 1; 1081 1082 updirs -= skip; 1083 while (skip-- > 0) { 1084 while ((p2 > q) && (*p2 != '/')) 1085 p2--; /* back up */ 1086 if (skip && p2 > q) 1087 p2--; 1088 } 1089 if (*p2 == '/' && p2 != q) 1090 p2++; 1091 } 1092 1093 if (updirs > 0 && pdirs) { 1094 if (i >= len - 5) 1095 break; 1096 if (op == '.') { 1097 ADDBUF('.'); 1098 ADDBUF('.'); 1099 ADDBUF('.'); 1100 } else { 1101 ADDBUF('/'); 1102 ADDBUF('<'); 1103 if (updirs > 9) { 1104 ADDBUF('9'); 1105 ADDBUF('+'); 1106 } else 1107 ADDBUF('0' + updirs); 1108 ADDBUF('>'); 1109 } 1110 } 1111 for (; *p2; p2++) 1112 ADDBUF(*p2); 1113 break; 1114 1115 case 'M': 1116 case 'm': 1117 for (p2 = connected && username ? username : "-"; 1118 *p2 ; p2++) { 1119 if (op == 'm' && *p2 == '.') 1120 break; 1121 ADDBUF(*p2); 1122 } 1123 break; 1124 1125 case 'n': 1126 for (p2 = connected ? username : "-"; *p2 ; p2++) 1127 ADDBUF(*p2); 1128 break; 1129 1130 case '%': 1131 ADDBUF('%'); 1132 break; 1133 1134 default: /* display unknown codes literally */ 1135 ADDBUF('%'); 1136 ADDBUF(op); 1137 break; 1138 1139 } 1140 } 1141 endbuf: 1142 buf[i] = '\0'; 1143 } 1144 1145 /* 1146 * Parse `port' into a TCP port number, defaulting to `defport' if `port' is 1147 * an unknown service name. If defport != -1, print a warning upon bad parse. 1148 */ 1149 int 1150 parseport(const char *port, int defport) 1151 { 1152 int rv; 1153 long nport; 1154 char *p, *ep; 1155 1156 p = xstrdup(port); 1157 nport = strtol(p, &ep, 10); 1158 if (*ep != '\0' && ep == p) { 1159 struct servent *svp; 1160 1161 svp = getservbyname(port, "tcp"); 1162 if (svp == NULL) { 1163 badparseport: 1164 if (defport != -1) 1165 warnx("Unknown port `%s', using port %d", 1166 port, defport); 1167 rv = defport; 1168 } else 1169 rv = ntohs(svp->s_port); 1170 } else if (nport < 1 || nport > MAX_IN_PORT_T || *ep != '\0') 1171 goto badparseport; 1172 else 1173 rv = nport; 1174 free(p); 1175 return (rv); 1176 } 1177 1178 /* 1179 * Determine if given string is an IPv6 address or not. 1180 * Return 1 for yes, 0 for no 1181 */ 1182 int 1183 isipv6addr(const char *addr) 1184 { 1185 int rv = 0; 1186 #ifdef INET6 1187 struct addrinfo hints, *res; 1188 1189 memset(&hints, 0, sizeof(hints)); 1190 hints.ai_family = PF_INET6; 1191 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1192 hints.ai_flags = AI_NUMERICHOST; 1193 if (getaddrinfo(addr, "0", &hints, &res) != 0) 1194 rv = 0; 1195 else { 1196 rv = 1; 1197 freeaddrinfo(res); 1198 } 1199 if (debug) 1200 fprintf(ttyout, "isipv6addr: got %d for %s\n", rv, addr); 1201 #endif 1202 return (rv == 1) ? 1 : 0; 1203 } 1204 1205 1206 /* 1207 * Internal version of connect(2); sets socket buffer sizes first and 1208 * handles the syscall being interrupted. 1209 * Returns -1 upon failure (with errno set to the problem), or 0 on success. 1210 */ 1211 int 1212 xconnect(int sock, const struct sockaddr *name, int namelen) 1213 { 1214 int rv; 1215 1216 setupsockbufsize(sock); 1217 rv = connect(sock, name, namelen); 1218 if (rv == -1 && errno == EINTR) { 1219 fd_set connfd; 1220 1221 FD_ZERO(&connfd); 1222 FD_SET(sock, &connfd); 1223 do { 1224 rv = select(sock + 1, NULL, &connfd, NULL, NULL); 1225 } while (rv == -1 && errno == EINTR); 1226 if (rv > 0) 1227 rv = 0; 1228 } 1229 return (rv); 1230 } 1231 1232 /* 1233 * Internal version of listen(2); sets socket buffer sizes first. 1234 */ 1235 int 1236 xlisten(int sock, int backlog) 1237 { 1238 1239 setupsockbufsize(sock); 1240 return (listen(sock, backlog)); 1241 } 1242 1243 /* 1244 * malloc() with inbuilt error checking 1245 */ 1246 void * 1247 xmalloc(size_t size) 1248 { 1249 void *p; 1250 1251 p = malloc(size); 1252 if (p == NULL) 1253 err(1, "Unable to allocate %ld bytes of memory", (long)size); 1254 return (p); 1255 } 1256 1257 /* 1258 * sl_init() with inbuilt error checking 1259 */ 1260 StringList * 1261 xsl_init(void) 1262 { 1263 StringList *p; 1264 1265 p = sl_init(); 1266 if (p == NULL) 1267 err(1, "Unable to allocate memory for stringlist"); 1268 return (p); 1269 } 1270 1271 /* 1272 * sl_add() with inbuilt error checking 1273 */ 1274 void 1275 xsl_add(StringList *sl, char *i) 1276 { 1277 1278 if (sl_add(sl, i) == -1) 1279 err(1, "Unable to add `%s' to stringlist", i); 1280 } 1281 1282 /* 1283 * strdup() with inbuilt error checking 1284 */ 1285 char * 1286 xstrdup(const char *str) 1287 { 1288 char *s; 1289 1290 if (str == NULL) 1291 errx(1, "xstrdup() called with NULL argument"); 1292 s = strdup(str); 1293 if (s == NULL) 1294 err(1, "Unable to allocate memory for string copy"); 1295 return (s); 1296 } 1297