ftp.c revision 1.144
1 /* $NetBSD: ftp.c,v 1.144 2007/04/11 05:03:25 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1996-2007 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 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1985, 1989, 1993, 1994 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 */ 67 68 /* 69 * Copyright (C) 1997 and 1998 WIDE Project. 70 * All rights reserved. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. Neither the name of the project nor the names of its contributors 81 * may be used to endorse or promote products derived from this software 82 * without specific prior written permission. 83 * 84 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 85 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 86 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 87 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 88 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 89 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 90 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 94 * SUCH DAMAGE. 95 */ 96 97 #include <sys/cdefs.h> 98 #ifndef lint 99 #if 0 100 static char sccsid[] = "@(#)ftp.c 8.6 (Berkeley) 10/27/94"; 101 #else 102 __RCSID("$NetBSD: ftp.c,v 1.144 2007/04/11 05:03:25 lukem Exp $"); 103 #endif 104 #endif /* not lint */ 105 106 #include <sys/types.h> 107 #include <sys/stat.h> 108 #include <sys/socket.h> 109 #include <sys/time.h> 110 111 #include <netinet/in.h> 112 #include <netinet/in_systm.h> 113 #include <netinet/ip.h> 114 #include <arpa/inet.h> 115 #include <arpa/ftp.h> 116 #include <arpa/telnet.h> 117 118 #include <ctype.h> 119 #include <err.h> 120 #include <errno.h> 121 #include <fcntl.h> 122 #include <netdb.h> 123 #include <stdio.h> 124 #include <stdlib.h> 125 #include <string.h> 126 #include <time.h> 127 #include <unistd.h> 128 #include <stdarg.h> 129 130 #include "ftp_var.h" 131 132 volatile sig_atomic_t abrtflag; 133 volatile sig_atomic_t timeoutflag; 134 135 sigjmp_buf ptabort; 136 int ptabflg; 137 int ptflag = 0; 138 char pasv[BUFSIZ]; /* passive port for proxy data connection */ 139 140 static int empty(FILE *, FILE *, int); 141 142 struct sockinet { 143 union sockunion { 144 struct sockaddr_in su_sin; 145 #ifdef INET6 146 struct sockaddr_in6 su_sin6; 147 #endif 148 } si_su; 149 #if !HAVE_SOCKADDR_SA_LEN 150 int si_len; 151 #endif 152 }; 153 154 #if !HAVE_SOCKADDR_SA_LEN 155 # define su_len si_len 156 #else 157 # define su_len si_su.su_sin.sin_len 158 #endif 159 #define su_family si_su.su_sin.sin_family 160 #define su_port si_su.su_sin.sin_port 161 162 struct sockinet myctladdr, hisctladdr, data_addr; 163 164 char * 165 hookup(char *host, char *port) 166 { 167 int s = -1, error, portnum; 168 struct addrinfo hints, *res, *res0; 169 char hbuf[MAXHOSTNAMELEN]; 170 static char hostnamebuf[MAXHOSTNAMELEN]; 171 char *cause = "unknown"; 172 socklen_t len; 173 int on = 1; 174 175 memset((char *)&hisctladdr, 0, sizeof (hisctladdr)); 176 memset((char *)&myctladdr, 0, sizeof (myctladdr)); 177 memset(&hints, 0, sizeof(hints)); 178 portnum = parseport(port, FTP_PORT); 179 hints.ai_flags = AI_CANONNAME; 180 hints.ai_family = family; 181 hints.ai_socktype = SOCK_STREAM; 182 hints.ai_protocol = 0; 183 error = getaddrinfo(host, NULL, &hints, &res0); 184 if (error) { 185 warnx("%s: %s", host, gai_strerror(error)); 186 code = -1; 187 return (0); 188 } 189 190 if (res0->ai_canonname) 191 (void)strlcpy(hostnamebuf, res0->ai_canonname, 192 sizeof(hostnamebuf)); 193 else 194 (void)strlcpy(hostnamebuf, host, sizeof(hostnamebuf)); 195 hostname = hostnamebuf; 196 197 for (res = res0; res; res = res->ai_next) { 198 /* 199 * make sure that ai_addr is NOT an IPv4 mapped address. 200 * IPv4 mapped address complicates too many things in FTP 201 * protocol handling, as FTP protocol is defined differently 202 * between IPv4 and IPv6. 203 * 204 * This may not be the best way to handle this situation, 205 * since the semantics of IPv4 mapped address is defined in 206 * the kernel. There are configurations where we should use 207 * IPv4 mapped address as native IPv6 address, not as 208 * "an IPv6 address that embeds IPv4 address" (namely, SIIT). 209 * 210 * More complete solution would be to have an additional 211 * getsockopt to grab "real" peername/sockname. "real" 212 * peername/sockname will be AF_INET if IPv4 mapped address 213 * is used to embed IPv4 address, and will be AF_INET6 if 214 * we use it as native. What a mess! 215 */ 216 ai_unmapped(res); 217 if (verbose && res0->ai_next) { 218 /* if we have multiple possibilities */ 219 if (getnameinfo(res->ai_addr, res->ai_addrlen, 220 hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST)) 221 strlcpy(hbuf, "?", sizeof(hbuf)); 222 fprintf(ttyout, "Trying %s...\n", hbuf); 223 } 224 ((struct sockaddr_in *)res->ai_addr)->sin_port = htons(portnum); 225 s = socket(res->ai_family, SOCK_STREAM, res->ai_protocol); 226 if (s < 0) { 227 cause = "socket"; 228 continue; 229 } 230 error = ftp_connect(s, res->ai_addr, res->ai_addrlen); 231 if (error) { 232 /* this "if" clause is to prevent print warning twice */ 233 if (res->ai_next) { 234 if (getnameinfo(res->ai_addr, res->ai_addrlen, 235 hbuf, sizeof(hbuf), NULL, 0, 236 NI_NUMERICHOST)) 237 strlcpy(hbuf, "?", sizeof(hbuf)); 238 warn("connect to address %s", hbuf); 239 } 240 cause = "connect"; 241 close(s); 242 s = -1; 243 continue; 244 } 245 246 /* finally we got one */ 247 break; 248 } 249 if (s < 0) { 250 warn("%s", cause); 251 code = -1; 252 freeaddrinfo(res0); 253 return 0; 254 } 255 memcpy(&hisctladdr.si_su, res->ai_addr, res->ai_addrlen); 256 hisctladdr.su_len = res->ai_addrlen; 257 freeaddrinfo(res0); 258 res0 = res = NULL; 259 260 len = hisctladdr.su_len; 261 if (getsockname(s, (struct sockaddr *)&myctladdr.si_su, &len) == -1) { 262 warn("getsockname"); 263 code = -1; 264 goto bad; 265 } 266 myctladdr.su_len = len; 267 268 #ifdef IPTOS_LOWDELAY 269 if (hisctladdr.su_family == AF_INET) { 270 int tos = IPTOS_LOWDELAY; 271 if (setsockopt(s, IPPROTO_IP, IP_TOS, 272 (void *)&tos, sizeof(tos)) == -1) { 273 DWARN("setsockopt %s (ignored)", 274 "IPTOS_LOWDELAY"); 275 } 276 } 277 #endif 278 cin = fdopen(s, "r"); 279 cout = fdopen(s, "w"); 280 if (cin == NULL || cout == NULL) { 281 warnx("fdopen failed."); 282 if (cin) 283 (void)fclose(cin); 284 if (cout) 285 (void)fclose(cout); 286 code = -1; 287 goto bad; 288 } 289 if (verbose) 290 fprintf(ttyout, "Connected to %s.\n", hostname); 291 if (getreply(0) > 2) { /* read startup message from server */ 292 if (cin) 293 (void)fclose(cin); 294 if (cout) 295 (void)fclose(cout); 296 code = -1; 297 goto bad; 298 } 299 300 if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, 301 (void *)&on, sizeof(on)) == -1) { 302 DWARN("setsockopt %s (ignored)", "SO_OOBINLINE"); 303 } 304 305 return (hostname); 306 bad: 307 (void)close(s); 308 return (NULL); 309 } 310 311 void 312 cmdabort(int notused) 313 { 314 int oerrno = errno; 315 316 sigint_raised = 1; 317 alarmtimer(0); 318 if (fromatty) 319 write(fileno(ttyout), "\n", 1); 320 abrtflag++; 321 if (ptflag) 322 siglongjmp(ptabort, 1); 323 errno = oerrno; 324 } 325 326 void 327 cmdtimeout(int notused) 328 { 329 int oerrno = errno; 330 331 alarmtimer(0); 332 if (fromatty) 333 write(fileno(ttyout), "\n", 1); 334 timeoutflag++; 335 if (ptflag) 336 siglongjmp(ptabort, 1); 337 errno = oerrno; 338 } 339 340 /*VARARGS*/ 341 int 342 command(const char *fmt, ...) 343 { 344 va_list ap; 345 int r; 346 sigfunc oldsigint; 347 348 #ifndef NO_DEBUG 349 if (ftp_debug) { 350 fputs("---> ", ttyout); 351 va_start(ap, fmt); 352 if (strncmp("PASS ", fmt, 5) == 0) 353 fputs("PASS XXXX", ttyout); 354 else if (strncmp("ACCT ", fmt, 5) == 0) 355 fputs("ACCT XXXX", ttyout); 356 else 357 vfprintf(ttyout, fmt, ap); 358 va_end(ap); 359 putc('\n', ttyout); 360 } 361 #endif 362 if (cout == NULL) { 363 warnx("No control connection for command."); 364 code = -1; 365 return (0); 366 } 367 368 abrtflag = 0; 369 370 oldsigint = xsignal(SIGINT, cmdabort); 371 372 va_start(ap, fmt); 373 vfprintf(cout, fmt, ap); 374 va_end(ap); 375 fputs("\r\n", cout); 376 (void)fflush(cout); 377 cpend = 1; 378 r = getreply(!strcmp(fmt, "QUIT")); 379 if (abrtflag && oldsigint != SIG_IGN) 380 (*oldsigint)(SIGINT); 381 (void)xsignal(SIGINT, oldsigint); 382 return (r); 383 } 384 385 static const char *m421[] = { 386 "remote server timed out. Connection closed", 387 "user interrupt. Connection closed", 388 "remote server has closed connection", 389 }; 390 391 int 392 getreply(int expecteof) 393 { 394 char current_line[BUFSIZ]; /* last line of previous reply */ 395 int c, n, line; 396 int dig; 397 int originalcode = 0, continuation = 0; 398 sigfunc oldsigint, oldsigalrm; 399 int pflag = 0; 400 char *cp, *pt = pasv; 401 402 abrtflag = 0; 403 timeoutflag = 0; 404 405 oldsigint = xsignal(SIGINT, cmdabort); 406 oldsigalrm = xsignal(SIGALRM, cmdtimeout); 407 408 for (line = 0 ;; line++) { 409 dig = n = code = 0; 410 cp = current_line; 411 while (alarmtimer(quit_time ? quit_time : 60), 412 ((c = getc(cin)) != '\n')) { 413 if (c == IAC) { /* handle telnet commands */ 414 switch (c = getc(cin)) { 415 case WILL: 416 case WONT: 417 c = getc(cin); 418 fprintf(cout, "%c%c%c", IAC, DONT, c); 419 (void)fflush(cout); 420 break; 421 case DO: 422 case DONT: 423 c = getc(cin); 424 fprintf(cout, "%c%c%c", IAC, WONT, c); 425 (void)fflush(cout); 426 break; 427 default: 428 break; 429 } 430 continue; 431 } 432 dig++; 433 if (c == EOF) { 434 /* 435 * these will get trashed by pswitch() 436 * in lostpeer() 437 */ 438 int reply_timeoutflag = timeoutflag; 439 int reply_abrtflag = abrtflag; 440 441 alarmtimer(0); 442 if (expecteof && feof(cin)) { 443 (void)xsignal(SIGINT, oldsigint); 444 (void)xsignal(SIGALRM, oldsigalrm); 445 code = 221; 446 return (0); 447 } 448 cpend = 0; 449 lostpeer(0); 450 if (verbose) { 451 size_t midx; 452 if (reply_timeoutflag) 453 midx = 0; 454 else if (reply_abrtflag) 455 midx = 1; 456 else 457 midx = 2; 458 (void)fprintf(ttyout, 459 "421 Service not available, %s.\n", m421[midx]); 460 (void)fflush(ttyout); 461 } 462 code = 421; 463 (void)xsignal(SIGINT, oldsigint); 464 (void)xsignal(SIGALRM, oldsigalrm); 465 return (4); 466 } 467 if (c != '\r' && (verbose > 0 || 468 ((verbose > -1 && n == '5' && dig > 4) && 469 (((!n && c < '5') || (n && n < '5')) 470 || !retry_connect)))) { 471 if (proxflag && 472 (dig == 1 || (dig == 5 && verbose == 0))) 473 fprintf(ttyout, "%s:", hostname); 474 (void)putc(c, ttyout); 475 } 476 if (dig < 4 && isdigit(c)) 477 code = code * 10 + (c - '0'); 478 if (!pflag && (code == 227 || code == 228)) 479 pflag = 1; 480 else if (!pflag && code == 229) 481 pflag = 100; 482 if (dig > 4 && pflag == 1 && isdigit(c)) 483 pflag = 2; 484 if (pflag == 2) { 485 if (c != '\r' && c != ')') { 486 if (pt < &pasv[sizeof(pasv) - 1]) 487 *pt++ = c; 488 } else { 489 *pt = '\0'; 490 pflag = 3; 491 } 492 } 493 if (pflag == 100 && c == '(') 494 pflag = 2; 495 if (dig == 4 && c == '-') { 496 if (continuation) 497 code = 0; 498 continuation++; 499 } 500 if (n == 0) 501 n = c; 502 if (cp < ¤t_line[sizeof(current_line) - 1]) 503 *cp++ = c; 504 } 505 if (verbose > 0 || ((verbose > -1 && n == '5') && 506 (n < '5' || !retry_connect))) { 507 (void)putc(c, ttyout); 508 (void)fflush (ttyout); 509 } 510 if (cp[-1] == '\r') 511 cp[-1] = '\0'; 512 *cp = '\0'; 513 if (line == 0) 514 (void)strlcpy(reply_string, current_line, 515 sizeof(reply_string)); 516 if (line > 0 && code == 0 && reply_callback != NULL) 517 (*reply_callback)(current_line); 518 if (continuation && code != originalcode) { 519 if (originalcode == 0) 520 originalcode = code; 521 continue; 522 } 523 if (n != '1') 524 cpend = 0; 525 alarmtimer(0); 526 (void)xsignal(SIGINT, oldsigint); 527 (void)xsignal(SIGALRM, oldsigalrm); 528 if (code == 421 || originalcode == 421) 529 lostpeer(0); 530 if (abrtflag && oldsigint != cmdabort && oldsigint != SIG_IGN) 531 (*oldsigint)(SIGINT); 532 if (timeoutflag && oldsigalrm != cmdtimeout && 533 oldsigalrm != SIG_IGN) 534 (*oldsigalrm)(SIGINT); 535 return (n - '0'); 536 } 537 } 538 539 static int 540 empty(FILE *cin, FILE *din, int sec) 541 { 542 int nr, nfd; 543 struct pollfd pfd[2]; 544 545 nfd = 0; 546 if (cin) { 547 pfd[nfd].fd = fileno(cin); 548 pfd[nfd++].events = POLLIN; 549 } 550 551 if (din) { 552 pfd[nfd].fd = fileno(din); 553 pfd[nfd++].events = POLLIN; 554 } 555 556 if ((nr = ftp_poll(pfd, nfd, sec * 1000)) <= 0) 557 return nr; 558 559 nr = 0; 560 nfd = 0; 561 if (cin) 562 nr |= (pfd[nfd++].revents & POLLIN) ? 1 : 0; 563 if (din) 564 nr |= (pfd[nfd++].revents & POLLIN) ? 2 : 0; 565 return nr; 566 } 567 568 sigjmp_buf xferabort; 569 570 void 571 abortxfer(int notused) 572 { 573 char msgbuf[100]; 574 size_t len; 575 576 sigint_raised = 1; 577 alarmtimer(0); 578 mflag = 0; 579 abrtflag = 0; 580 switch (direction[0]) { 581 case 'r': 582 strlcpy(msgbuf, "\nreceive", sizeof(msgbuf)); 583 break; 584 case 's': 585 strlcpy(msgbuf, "\nsend", sizeof(msgbuf)); 586 break; 587 default: 588 errx(1, "abortxfer called with unknown direction `%s'", 589 direction); 590 } 591 len = strlcat(msgbuf, " aborted. Waiting for remote to finish abort.\n", 592 sizeof(msgbuf)); 593 write(fileno(ttyout), msgbuf, len); 594 siglongjmp(xferabort, 1); 595 } 596 597 void 598 sendrequest(const char *cmd, const char *local, const char *remote, 599 int printnames) 600 { 601 struct stat st; 602 int c, d; 603 FILE *volatile fin; 604 FILE *volatile dout; 605 int (*volatile closefunc)(FILE *); 606 sigfunc volatile oldintr; 607 sigfunc volatile oldintp; 608 off_t volatile hashbytes; 609 char *volatile lmode; 610 char *bufp; 611 static size_t bufsize; 612 static char *buf; 613 int oprogress; 614 615 hashbytes = mark; 616 direction = "sent"; 617 dout = NULL; 618 bytes = 0; 619 filesize = -1; 620 oprogress = progress; 621 if (verbose && printnames) { 622 if (*local != '-') 623 fprintf(ttyout, "local: %s ", local); 624 if (remote) 625 fprintf(ttyout, "remote: %s\n", remote); 626 } 627 if (proxy) { 628 proxtrans(cmd, local, remote); 629 return; 630 } 631 if (curtype != type) 632 changetype(type, 0); 633 closefunc = NULL; 634 oldintr = NULL; 635 oldintp = NULL; 636 lmode = "w"; 637 if (sigsetjmp(xferabort, 1)) { 638 while (cpend) 639 (void)getreply(0); 640 code = -1; 641 goto cleanupsend; 642 } 643 (void)xsignal(SIGQUIT, psummary); 644 oldintr = xsignal(SIGINT, abortxfer); 645 if (strcmp(local, "-") == 0) { 646 fin = stdin; 647 progress = 0; 648 } else if (*local == '|') { 649 oldintp = xsignal(SIGPIPE, SIG_IGN); 650 fin = popen(local + 1, "r"); 651 if (fin == NULL) { 652 warn("%s", local + 1); 653 code = -1; 654 goto cleanupsend; 655 } 656 progress = 0; 657 closefunc = pclose; 658 } else { 659 fin = fopen(local, "r"); 660 if (fin == NULL) { 661 warn("local: %s", local); 662 code = -1; 663 goto cleanupsend; 664 } 665 closefunc = fclose; 666 if (fstat(fileno(fin), &st) < 0 || !S_ISREG(st.st_mode)) { 667 fprintf(ttyout, "%s: not a plain file.\n", local); 668 code = -1; 669 goto cleanupsend; 670 } 671 filesize = st.st_size; 672 } 673 if (initconn()) { 674 code = -1; 675 goto cleanupsend; 676 } 677 if (sigsetjmp(xferabort, 1)) 678 goto abort; 679 680 if (restart_point && 681 (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) { 682 int rc; 683 684 rc = -1; 685 switch (curtype) { 686 case TYPE_A: 687 rc = fseeko(fin, restart_point, SEEK_SET); 688 break; 689 case TYPE_I: 690 case TYPE_L: 691 rc = lseek(fileno(fin), restart_point, SEEK_SET); 692 break; 693 } 694 if (rc < 0) { 695 warn("local: %s", local); 696 goto cleanupsend; 697 } 698 if (command("REST " LLF, (LLT)restart_point) != CONTINUE) 699 goto cleanupsend; 700 lmode = "r+"; 701 } 702 if (remote) { 703 if (command("%s %s", cmd, remote) != PRELIM) 704 goto cleanupsend; 705 } else { 706 if (command("%s", cmd) != PRELIM) 707 goto cleanupsend; 708 } 709 dirchange = 1; 710 dout = dataconn(lmode); 711 if (dout == NULL) 712 goto abort; 713 714 if (sndbuf_size > bufsize) { 715 if (buf) 716 (void)free(buf); 717 bufsize = sndbuf_size; 718 buf = ftp_malloc(bufsize); 719 } 720 721 progressmeter(-1); 722 oldintp = xsignal(SIGPIPE, SIG_IGN); 723 724 switch (curtype) { 725 726 case TYPE_I: 727 case TYPE_L: 728 if (rate_put) { /* rate limited */ 729 while (1) { 730 struct timeval then, now, td; 731 off_t bufrem; 732 733 (void)gettimeofday(&then, NULL); 734 errno = c = d = 0; 735 bufrem = rate_put; 736 while (bufrem > 0) { 737 if ((c = read(fileno(fin), buf, 738 MIN(bufsize, bufrem))) <= 0) 739 goto senddone; 740 bytes += c; 741 bufrem -= c; 742 for (bufp = buf; c > 0; 743 c -= d, bufp += d) 744 if ((d = write(fileno(dout), 745 bufp, c)) <= 0) 746 break; 747 if (d < 0) 748 goto senddone; 749 if (hash && 750 (!progress || filesize < 0) ) { 751 while (bytes >= hashbytes) { 752 (void)putc('#', ttyout); 753 hashbytes += mark; 754 } 755 (void)fflush(ttyout); 756 } 757 } 758 while (1) { 759 (void)gettimeofday(&now, NULL); 760 timersub(&now, &then, &td); 761 if (td.tv_sec > 0) 762 break; 763 usleep(1000000 - td.tv_usec); 764 } 765 } 766 } else { /* simpler/faster; no rate limit */ 767 while (1) { 768 errno = c = d = 0; 769 if ((c = read(fileno(fin), buf, bufsize)) <= 0) 770 goto senddone; 771 bytes += c; 772 for (bufp = buf; c > 0; c -= d, bufp += d) 773 if ((d = write(fileno(dout), bufp, c)) 774 <= 0) 775 break; 776 if (d < 0) 777 goto senddone; 778 if (hash && (!progress || filesize < 0) ) { 779 while (bytes >= hashbytes) { 780 (void)putc('#', ttyout); 781 hashbytes += mark; 782 } 783 (void)fflush(ttyout); 784 } 785 } 786 } 787 senddone: 788 if (hash && (!progress || filesize < 0) && bytes > 0) { 789 if (bytes < mark) 790 (void)putc('#', ttyout); 791 (void)putc('\n', ttyout); 792 } 793 if (c < 0) 794 warn("local: %s", local); 795 if (d < 0) { 796 if (errno != EPIPE) 797 warn("netout"); 798 bytes = -1; 799 } 800 break; 801 802 case TYPE_A: 803 while ((c = getc(fin)) != EOF) { 804 if (c == '\n') { 805 while (hash && (!progress || filesize < 0) && 806 (bytes >= hashbytes)) { 807 (void)putc('#', ttyout); 808 (void)fflush(ttyout); 809 hashbytes += mark; 810 } 811 if (ferror(dout)) 812 break; 813 (void)putc('\r', dout); 814 bytes++; 815 } 816 (void)putc(c, dout); 817 bytes++; 818 #if 0 /* this violates RFC */ 819 if (c == '\r') { 820 (void)putc('\0', dout); 821 bytes++; 822 } 823 #endif 824 } 825 if (hash && (!progress || filesize < 0)) { 826 if (bytes < hashbytes) 827 (void)putc('#', ttyout); 828 (void)putc('\n', ttyout); 829 } 830 if (ferror(fin)) 831 warn("local: %s", local); 832 if (ferror(dout)) { 833 if (errno != EPIPE) 834 warn("netout"); 835 bytes = -1; 836 } 837 break; 838 } 839 840 progressmeter(1); 841 if (closefunc != NULL) { 842 (*closefunc)(fin); 843 fin = NULL; 844 } 845 (void)fclose(dout); 846 dout = NULL; 847 (void)getreply(0); 848 if (bytes > 0) 849 ptransfer(0); 850 goto cleanupsend; 851 852 abort: 853 (void)xsignal(SIGINT, oldintr); 854 oldintr = NULL; 855 if (!cpend) { 856 code = -1; 857 goto cleanupsend; 858 } 859 if (data >= 0) { 860 (void)close(data); 861 data = -1; 862 } 863 if (dout) { 864 (void)fclose(dout); 865 dout = NULL; 866 } 867 (void)getreply(0); 868 code = -1; 869 if (bytes > 0) 870 ptransfer(0); 871 872 cleanupsend: 873 if (oldintr) 874 (void)xsignal(SIGINT, oldintr); 875 if (oldintp) 876 (void)xsignal(SIGPIPE, oldintp); 877 if (data >= 0) { 878 (void)close(data); 879 data = -1; 880 } 881 if (closefunc != NULL && fin != NULL) 882 (*closefunc)(fin); 883 if (dout) 884 (void)fclose(dout); 885 progress = oprogress; 886 restart_point = 0; 887 bytes = 0; 888 } 889 890 void 891 recvrequest(const char *cmd, const char *volatile local, const char *remote, 892 const char *lmode, int printnames, int ignorespecial) 893 { 894 FILE *volatile fout; 895 FILE *volatile din; 896 int (*volatile closefunc)(FILE *); 897 sigfunc volatile oldintr; 898 sigfunc volatile oldintp; 899 int c, d; 900 int volatile is_retr; 901 int volatile tcrflag; 902 int volatile bare_lfs; 903 static size_t bufsize; 904 static char *buf; 905 off_t volatile hashbytes; 906 struct stat st; 907 time_t mtime; 908 struct timeval tval[2]; 909 int oprogress; 910 int opreserve; 911 912 fout = NULL; 913 din = NULL; 914 hashbytes = mark; 915 direction = "received"; 916 bytes = 0; 917 bare_lfs = 0; 918 filesize = -1; 919 oprogress = progress; 920 opreserve = preserve; 921 is_retr = (strcmp(cmd, "RETR") == 0); 922 if (is_retr && verbose && printnames) { 923 if (ignorespecial || *local != '-') 924 fprintf(ttyout, "local: %s ", local); 925 if (remote) 926 fprintf(ttyout, "remote: %s\n", remote); 927 } 928 if (proxy && is_retr) { 929 proxtrans(cmd, local, remote); 930 return; 931 } 932 closefunc = NULL; 933 oldintr = NULL; 934 oldintp = NULL; 935 tcrflag = !crflag && is_retr; 936 if (sigsetjmp(xferabort, 1)) { 937 while (cpend) 938 (void)getreply(0); 939 code = -1; 940 goto cleanuprecv; 941 } 942 (void)xsignal(SIGQUIT, psummary); 943 oldintr = xsignal(SIGINT, abortxfer); 944 if (ignorespecial || (strcmp(local, "-") && *local != '|')) { 945 if (access(local, W_OK) < 0) { 946 char *dir = strrchr(local, '/'); 947 948 if (errno != ENOENT && errno != EACCES) { 949 warn("local: %s", local); 950 code = -1; 951 goto cleanuprecv; 952 } 953 if (dir != NULL) 954 *dir = 0; 955 d = access(dir == local ? "/" : 956 dir ? local : ".", W_OK); 957 if (dir != NULL) 958 *dir = '/'; 959 if (d < 0) { 960 warn("local: %s", local); 961 code = -1; 962 goto cleanuprecv; 963 } 964 if (!runique && errno == EACCES && 965 chmod(local, (S_IRUSR|S_IWUSR)) < 0) { 966 warn("local: %s", local); 967 code = -1; 968 goto cleanuprecv; 969 } 970 if (runique && errno == EACCES && 971 (local = gunique(local)) == NULL) { 972 code = -1; 973 goto cleanuprecv; 974 } 975 } 976 else if (runique && (local = gunique(local)) == NULL) { 977 code = -1; 978 goto cleanuprecv; 979 } 980 } 981 if (!is_retr) { 982 if (curtype != TYPE_A) 983 changetype(TYPE_A, 0); 984 } else { 985 if (curtype != type) 986 changetype(type, 0); 987 filesize = remotesize(remote, 0); 988 if (code == 421 || code == -1) 989 goto cleanuprecv; 990 } 991 if (initconn()) { 992 code = -1; 993 goto cleanuprecv; 994 } 995 if (sigsetjmp(xferabort, 1)) 996 goto abort; 997 if (is_retr && restart_point && 998 command("REST " LLF, (LLT) restart_point) != CONTINUE) 999 goto cleanuprecv; 1000 if (! EMPTYSTRING(remote)) { 1001 if (command("%s %s", cmd, remote) != PRELIM) 1002 goto cleanuprecv; 1003 } else { 1004 if (command("%s", cmd) != PRELIM) 1005 goto cleanuprecv; 1006 } 1007 din = dataconn("r"); 1008 if (din == NULL) 1009 goto abort; 1010 if (!ignorespecial && strcmp(local, "-") == 0) { 1011 fout = stdout; 1012 progress = 0; 1013 preserve = 0; 1014 } else if (!ignorespecial && *local == '|') { 1015 oldintp = xsignal(SIGPIPE, SIG_IGN); 1016 fout = popen(local + 1, "w"); 1017 if (fout == NULL) { 1018 warn("%s", local+1); 1019 goto abort; 1020 } 1021 progress = 0; 1022 preserve = 0; 1023 closefunc = pclose; 1024 } else { 1025 fout = fopen(local, lmode); 1026 if (fout == NULL) { 1027 warn("local: %s", local); 1028 goto abort; 1029 } 1030 closefunc = fclose; 1031 } 1032 1033 if (fstat(fileno(fout), &st) != -1 && !S_ISREG(st.st_mode)) { 1034 progress = 0; 1035 preserve = 0; 1036 } 1037 if (rcvbuf_size > bufsize) { 1038 if (buf) 1039 (void)free(buf); 1040 bufsize = rcvbuf_size; 1041 buf = ftp_malloc(bufsize); 1042 } 1043 1044 progressmeter(-1); 1045 1046 switch (curtype) { 1047 1048 case TYPE_I: 1049 case TYPE_L: 1050 if (is_retr && restart_point && 1051 lseek(fileno(fout), restart_point, SEEK_SET) < 0) { 1052 warn("local: %s", local); 1053 goto cleanuprecv; 1054 } 1055 if (rate_get) { /* rate limiting */ 1056 while (1) { 1057 struct timeval then, now, td; 1058 off_t bufrem; 1059 1060 (void)gettimeofday(&then, NULL); 1061 errno = c = d = 0; 1062 for (bufrem = rate_get; bufrem > 0; ) { 1063 if ((c = read(fileno(din), buf, 1064 MIN(bufsize, bufrem))) <= 0) 1065 goto recvdone; 1066 bytes += c; 1067 bufrem -=c; 1068 if ((d = write(fileno(fout), buf, c)) 1069 != c) 1070 goto recvdone; 1071 if (hash && 1072 (!progress || filesize < 0)) { 1073 while (bytes >= hashbytes) { 1074 (void)putc('#', ttyout); 1075 hashbytes += mark; 1076 } 1077 (void)fflush(ttyout); 1078 } 1079 } 1080 /* sleep until time is up */ 1081 while (1) { 1082 (void)gettimeofday(&now, NULL); 1083 timersub(&now, &then, &td); 1084 if (td.tv_sec > 0) 1085 break; 1086 usleep(1000000 - td.tv_usec); 1087 } 1088 } 1089 } else { /* faster code (no limiting) */ 1090 while (1) { 1091 errno = c = d = 0; 1092 if ((c = read(fileno(din), buf, bufsize)) <= 0) 1093 goto recvdone; 1094 bytes += c; 1095 if ((d = write(fileno(fout), buf, c)) != c) 1096 goto recvdone; 1097 if (hash && (!progress || filesize < 0)) { 1098 while (bytes >= hashbytes) { 1099 (void)putc('#', ttyout); 1100 hashbytes += mark; 1101 } 1102 (void)fflush(ttyout); 1103 } 1104 } 1105 } 1106 recvdone: 1107 if (hash && (!progress || filesize < 0) && bytes > 0) { 1108 if (bytes < mark) 1109 (void)putc('#', ttyout); 1110 (void)putc('\n', ttyout); 1111 } 1112 if (c < 0) { 1113 if (errno != EPIPE) 1114 warn("netin"); 1115 bytes = -1; 1116 } 1117 if (d < c) { 1118 if (d < 0) 1119 warn("local: %s", local); 1120 else 1121 warnx("%s: short write", local); 1122 } 1123 break; 1124 1125 case TYPE_A: 1126 if (is_retr && restart_point) { 1127 int ch; 1128 off_t i; 1129 1130 if (fseeko(fout, (off_t)0, SEEK_SET) < 0) 1131 goto done; 1132 for (i = 0; i++ < restart_point;) { 1133 if ((ch = getc(fout)) == EOF) 1134 goto done; 1135 if (ch == '\n') 1136 i++; 1137 } 1138 if (fseeko(fout, (off_t)0, SEEK_CUR) < 0) { 1139 done: 1140 warn("local: %s", local); 1141 goto cleanuprecv; 1142 } 1143 } 1144 while ((c = getc(din)) != EOF) { 1145 if (c == '\n') 1146 bare_lfs++; 1147 while (c == '\r') { 1148 while (hash && (!progress || filesize < 0) && 1149 (bytes >= hashbytes)) { 1150 (void)putc('#', ttyout); 1151 (void)fflush(ttyout); 1152 hashbytes += mark; 1153 } 1154 bytes++; 1155 if ((c = getc(din)) != '\n' || tcrflag) { 1156 if (ferror(fout)) 1157 goto break2; 1158 (void)putc('\r', fout); 1159 if (c == '\0') { 1160 bytes++; 1161 goto contin2; 1162 } 1163 if (c == EOF) 1164 goto contin2; 1165 } 1166 } 1167 (void)putc(c, fout); 1168 bytes++; 1169 contin2: ; 1170 } 1171 break2: 1172 if (hash && (!progress || filesize < 0)) { 1173 if (bytes < hashbytes) 1174 (void)putc('#', ttyout); 1175 (void)putc('\n', ttyout); 1176 } 1177 if (ferror(din)) { 1178 if (errno != EPIPE) 1179 warn("netin"); 1180 bytes = -1; 1181 } 1182 if (ferror(fout)) 1183 warn("local: %s", local); 1184 break; 1185 } 1186 1187 progressmeter(1); 1188 if (closefunc != NULL) { 1189 (*closefunc)(fout); 1190 fout = NULL; 1191 } 1192 (void)fclose(din); 1193 din = NULL; 1194 (void)getreply(0); 1195 if (bare_lfs) { 1196 fprintf(ttyout, 1197 "WARNING! %d bare linefeeds received in ASCII mode.\n", 1198 bare_lfs); 1199 fputs("File may not have transferred correctly.\n", ttyout); 1200 } 1201 if (bytes >= 0 && is_retr) { 1202 if (bytes > 0) 1203 ptransfer(0); 1204 if (preserve && (closefunc == fclose)) { 1205 mtime = remotemodtime(remote, 0); 1206 if (mtime != -1) { 1207 (void)gettimeofday(&tval[0], NULL); 1208 tval[1].tv_sec = mtime; 1209 tval[1].tv_usec = 0; 1210 if (utimes(local, tval) == -1) { 1211 fprintf(ttyout, 1212 "Can't change modification time on %s to %s", 1213 local, asctime(localtime(&mtime))); 1214 } 1215 } 1216 } 1217 } 1218 goto cleanuprecv; 1219 1220 abort: 1221 /* 1222 * abort using RFC 959 recommended IP,SYNC sequence 1223 */ 1224 if (! sigsetjmp(xferabort, 1)) { 1225 /* this is the first call */ 1226 (void)xsignal(SIGINT, abort_squared); 1227 if (!cpend) { 1228 code = -1; 1229 goto cleanuprecv; 1230 } 1231 abort_remote(din); 1232 } 1233 code = -1; 1234 if (bytes > 0) 1235 ptransfer(0); 1236 1237 cleanuprecv: 1238 if (oldintr) 1239 (void)xsignal(SIGINT, oldintr); 1240 if (oldintp) 1241 (void)xsignal(SIGPIPE, oldintp); 1242 if (data >= 0) { 1243 (void)close(data); 1244 data = -1; 1245 } 1246 if (closefunc != NULL && fout != NULL) 1247 (*closefunc)(fout); 1248 if (din) 1249 (void)fclose(din); 1250 progress = oprogress; 1251 preserve = opreserve; 1252 bytes = 0; 1253 } 1254 1255 /* 1256 * Need to start a listen on the data channel before we send the command, 1257 * otherwise the server's connect may fail. 1258 */ 1259 int 1260 initconn(void) 1261 { 1262 char *p, *a; 1263 int result, tmpno = 0; 1264 int on = 1; 1265 int error; 1266 unsigned int addr[16], port[2]; 1267 unsigned int af, hal, pal; 1268 socklen_t len; 1269 char *pasvcmd = NULL; 1270 int overbose; 1271 1272 #ifdef INET6 1273 #ifndef NO_DEBUG 1274 if (myctladdr.su_family == AF_INET6 && ftp_debug && 1275 (IN6_IS_ADDR_LINKLOCAL(&myctladdr.si_su.su_sin6.sin6_addr) || 1276 IN6_IS_ADDR_SITELOCAL(&myctladdr.si_su.su_sin6.sin6_addr))) { 1277 warnx("use of scoped address can be troublesome"); 1278 } 1279 #endif 1280 #endif 1281 reinit: 1282 if (passivemode) { 1283 data_addr = myctladdr; 1284 data = socket(data_addr.su_family, SOCK_STREAM, 0); 1285 if (data < 0) { 1286 warn("socket"); 1287 return (1); 1288 } 1289 if ((options & SO_DEBUG) && 1290 setsockopt(data, SOL_SOCKET, SO_DEBUG, 1291 (void *)&on, sizeof(on)) == -1) { 1292 DWARN("setsockopt %s (ignored)", "SO_DEBUG"); 1293 } 1294 result = COMPLETE + 1; 1295 switch (data_addr.su_family) { 1296 case AF_INET: 1297 if (epsv4 && !epsv4bad) { 1298 pasvcmd = "EPSV"; 1299 overbose = verbose; 1300 if (ftp_debug == 0) 1301 verbose = -1; 1302 result = command("EPSV"); 1303 verbose = overbose; 1304 if (verbose && 1305 (result == COMPLETE || !connected)) 1306 fprintf(ttyout, "%s\n", reply_string); 1307 if (!connected) 1308 return (1); 1309 /* 1310 * this code is to be friendly with broken 1311 * BSDI ftpd 1312 */ 1313 if (code / 10 == 22 && code != 229) { 1314 fputs( 1315 "wrong server: return code must be 229\n", 1316 ttyout); 1317 result = COMPLETE + 1; 1318 } 1319 if (result != COMPLETE) { 1320 epsv4bad = 1; 1321 DPRINTF("disabling epsv4 for this " 1322 "connection\n"); 1323 } 1324 } 1325 if (result != COMPLETE) { 1326 pasvcmd = "PASV"; 1327 result = command("PASV"); 1328 if (!connected) 1329 return (1); 1330 } 1331 break; 1332 #ifdef INET6 1333 case AF_INET6: 1334 pasvcmd = "EPSV"; 1335 overbose = verbose; 1336 if (ftp_debug == 0) 1337 verbose = -1; 1338 result = command("EPSV"); 1339 verbose = overbose; 1340 if (verbose && (result == COMPLETE || !connected)) 1341 fprintf(ttyout, "%s\n", reply_string); 1342 if (!connected) 1343 return (1); 1344 /* this code is to be friendly with broken BSDI ftpd */ 1345 if (code / 10 == 22 && code != 229) { 1346 fputs( 1347 "wrong server: return code must be 229\n", 1348 ttyout); 1349 result = COMPLETE + 1; 1350 } 1351 if (result != COMPLETE) { 1352 pasvcmd = "LPSV"; 1353 result = command("LPSV"); 1354 } 1355 if (!connected) 1356 return (1); 1357 break; 1358 #endif 1359 default: 1360 result = COMPLETE + 1; 1361 break; 1362 } 1363 if (result != COMPLETE) { 1364 if (activefallback) { 1365 (void)close(data); 1366 data = -1; 1367 passivemode = 0; 1368 #if 0 1369 activefallback = 0; 1370 #endif 1371 goto reinit; 1372 } 1373 fputs("Passive mode refused.\n", ttyout); 1374 goto bad; 1375 } 1376 1377 #define pack2(var, off) \ 1378 (((var[(off) + 0] & 0xff) << 8) | ((var[(off) + 1] & 0xff) << 0)) 1379 #define pack4(var, off) \ 1380 (((var[(off) + 0] & 0xff) << 24) | ((var[(off) + 1] & 0xff) << 16) | \ 1381 ((var[(off) + 2] & 0xff) << 8) | ((var[(off) + 3] & 0xff) << 0)) 1382 #define UC(b) (((int)b)&0xff) 1383 1384 /* 1385 * What we've got at this point is a string of comma separated 1386 * one-byte unsigned integer values, separated by commas. 1387 */ 1388 if (strcmp(pasvcmd, "PASV") == 0) { 1389 if (data_addr.su_family != AF_INET) { 1390 fputs( 1391 "Passive mode AF mismatch. Shouldn't happen!\n", ttyout); 1392 error = 1; 1393 goto bad; 1394 } 1395 if (code / 10 == 22 && code != 227) { 1396 fputs("wrong server: return code must be 227\n", 1397 ttyout); 1398 error = 1; 1399 goto bad; 1400 } 1401 error = sscanf(pasv, "%u,%u,%u,%u,%u,%u", 1402 &addr[0], &addr[1], &addr[2], &addr[3], 1403 &port[0], &port[1]); 1404 if (error != 6) { 1405 fputs( 1406 "Passive mode address scan failure. Shouldn't happen!\n", ttyout); 1407 error = 1; 1408 goto bad; 1409 } 1410 error = 0; 1411 memset(&data_addr, 0, sizeof(data_addr)); 1412 data_addr.su_family = AF_INET; 1413 data_addr.su_len = sizeof(struct sockaddr_in); 1414 data_addr.si_su.su_sin.sin_addr.s_addr = 1415 htonl(pack4(addr, 0)); 1416 data_addr.su_port = htons(pack2(port, 0)); 1417 } else if (strcmp(pasvcmd, "LPSV") == 0) { 1418 if (code / 10 == 22 && code != 228) { 1419 fputs("wrong server: return code must be 228\n", 1420 ttyout); 1421 error = 1; 1422 goto bad; 1423 } 1424 switch (data_addr.su_family) { 1425 case AF_INET: 1426 error = sscanf(pasv, 1427 "%u,%u,%u,%u,%u,%u,%u,%u,%u", 1428 &af, &hal, 1429 &addr[0], &addr[1], &addr[2], &addr[3], 1430 &pal, &port[0], &port[1]); 1431 if (error != 9) { 1432 fputs( 1433 "Passive mode address scan failure. Shouldn't happen!\n", ttyout); 1434 error = 1; 1435 goto bad; 1436 } 1437 if (af != 4 || hal != 4 || pal != 2) { 1438 fputs( 1439 "Passive mode AF mismatch. Shouldn't happen!\n", ttyout); 1440 error = 1; 1441 goto bad; 1442 } 1443 1444 error = 0; 1445 memset(&data_addr, 0, sizeof(data_addr)); 1446 data_addr.su_family = AF_INET; 1447 data_addr.su_len = sizeof(struct sockaddr_in); 1448 data_addr.si_su.su_sin.sin_addr.s_addr = 1449 htonl(pack4(addr, 0)); 1450 data_addr.su_port = htons(pack2(port, 0)); 1451 break; 1452 #ifdef INET6 1453 case AF_INET6: 1454 error = sscanf(pasv, 1455 "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u", 1456 &af, &hal, 1457 &addr[0], &addr[1], &addr[2], &addr[3], 1458 &addr[4], &addr[5], &addr[6], &addr[7], 1459 &addr[8], &addr[9], &addr[10], 1460 &addr[11], &addr[12], &addr[13], 1461 &addr[14], &addr[15], 1462 &pal, &port[0], &port[1]); 1463 if (error != 21) { 1464 fputs( 1465 "Passive mode address scan failure. Shouldn't happen!\n", ttyout); 1466 error = 1; 1467 goto bad; 1468 } 1469 if (af != 6 || hal != 16 || pal != 2) { 1470 fputs( 1471 "Passive mode AF mismatch. Shouldn't happen!\n", ttyout); 1472 error = 1; 1473 goto bad; 1474 } 1475 1476 error = 0; 1477 memset(&data_addr, 0, sizeof(data_addr)); 1478 data_addr.su_family = AF_INET6; 1479 data_addr.su_len = sizeof(struct sockaddr_in6); 1480 { 1481 int i; 1482 for (i = 0; i < sizeof(struct in6_addr); i++) { 1483 data_addr.si_su.su_sin6.sin6_addr.s6_addr[i] = 1484 UC(addr[i]); 1485 } 1486 } 1487 data_addr.su_port = htons(pack2(port, 0)); 1488 break; 1489 #endif 1490 default: 1491 error = 1; 1492 } 1493 } else if (strcmp(pasvcmd, "EPSV") == 0) { 1494 char delim[4]; 1495 1496 port[0] = 0; 1497 if (code / 10 == 22 && code != 229) { 1498 fputs("wrong server: return code must be 229\n", 1499 ttyout); 1500 error = 1; 1501 goto bad; 1502 } 1503 if (sscanf(pasv, "%c%c%c%d%c", &delim[0], 1504 &delim[1], &delim[2], &port[1], 1505 &delim[3]) != 5) { 1506 fputs("parse error!\n", ttyout); 1507 error = 1; 1508 goto bad; 1509 } 1510 if (delim[0] != delim[1] || delim[0] != delim[2] 1511 || delim[0] != delim[3]) { 1512 fputs("parse error!\n", ttyout); 1513 error = 1; 1514 goto bad; 1515 } 1516 data_addr = hisctladdr; 1517 data_addr.su_port = htons(port[1]); 1518 } else 1519 goto bad; 1520 1521 while (ftp_connect(data, (struct sockaddr *)&data_addr.si_su, 1522 data_addr.su_len) < 0) { 1523 if (activefallback) { 1524 (void)close(data); 1525 data = -1; 1526 passivemode = 0; 1527 #if 0 1528 activefallback = 0; 1529 #endif 1530 goto reinit; 1531 } 1532 warn("connect for data channel"); 1533 goto bad; 1534 } 1535 #ifdef IPTOS_THROUGHPUT 1536 if (data_addr.su_family == AF_INET) { 1537 on = IPTOS_THROUGHPUT; 1538 if (setsockopt(data, IPPROTO_IP, IP_TOS, 1539 (void *)&on, sizeof(on)) == -1) { 1540 DWARN("setsockopt %s (ignored)", 1541 "IPTOS_THROUGHPUT"); 1542 } 1543 } 1544 #endif 1545 return (0); 1546 } 1547 1548 noport: 1549 data_addr = myctladdr; 1550 if (sendport) 1551 data_addr.su_port = 0; /* let system pick one */ 1552 if (data != -1) 1553 (void)close(data); 1554 data = socket(data_addr.su_family, SOCK_STREAM, 0); 1555 if (data < 0) { 1556 warn("socket"); 1557 if (tmpno) 1558 sendport = 1; 1559 return (1); 1560 } 1561 if (!sendport) 1562 if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, 1563 (void *)&on, sizeof(on)) == -1) { 1564 warn("setsockopt %s", "SO_REUSEADDR"); 1565 goto bad; 1566 } 1567 if (bind(data, (struct sockaddr *)&data_addr.si_su, 1568 data_addr.su_len) < 0) { 1569 warn("bind"); 1570 goto bad; 1571 } 1572 if ((options & SO_DEBUG) && 1573 setsockopt(data, SOL_SOCKET, SO_DEBUG, 1574 (void *)&on, sizeof(on)) == -1) { 1575 DWARN("setsockopt %s (ignored)", "SO_DEBUG"); 1576 } 1577 len = sizeof(data_addr.si_su); 1578 memset((char *)&data_addr, 0, sizeof (data_addr)); 1579 if (getsockname(data, (struct sockaddr *)&data_addr.si_su, &len) == -1) { 1580 warn("getsockname"); 1581 goto bad; 1582 } 1583 data_addr.su_len = len; 1584 if (ftp_listen(data, 1) < 0) 1585 warn("listen"); 1586 1587 if (sendport) { 1588 char hname[NI_MAXHOST], sname[NI_MAXSERV]; 1589 int af; 1590 struct sockinet tmp; 1591 1592 switch (data_addr.su_family) { 1593 case AF_INET: 1594 if (!epsv4 || epsv4bad) { 1595 result = COMPLETE + 1; 1596 break; 1597 } 1598 /* FALLTHROUGH */ 1599 #ifdef INET6 1600 case AF_INET6: 1601 #endif 1602 af = (data_addr.su_family == AF_INET) ? 1 : 2; 1603 tmp = data_addr; 1604 #ifdef INET6 1605 if (tmp.su_family == AF_INET6) 1606 tmp.si_su.su_sin6.sin6_scope_id = 0; 1607 #endif 1608 if (getnameinfo((struct sockaddr *)&tmp.si_su, 1609 tmp.su_len, hname, sizeof(hname), sname, 1610 sizeof(sname), NI_NUMERICHOST | NI_NUMERICSERV)) { 1611 result = ERROR; 1612 } else { 1613 overbose = verbose; 1614 if (ftp_debug == 0) 1615 verbose = -1; 1616 result = command("EPRT |%d|%s|%s|", af, hname, 1617 sname); 1618 verbose = overbose; 1619 if (verbose && 1620 (result == COMPLETE || !connected)) 1621 fprintf(ttyout, "%s\n", reply_string); 1622 if (!connected) 1623 return (1); 1624 if (result != COMPLETE) { 1625 epsv4bad = 1; 1626 DPRINTF("disabling epsv4 for this " 1627 "connection\n"); 1628 } 1629 } 1630 break; 1631 default: 1632 result = COMPLETE + 1; 1633 break; 1634 } 1635 if (result == COMPLETE) 1636 goto skip_port; 1637 1638 switch (data_addr.su_family) { 1639 case AF_INET: 1640 a = (char *)&data_addr.si_su.su_sin.sin_addr; 1641 p = (char *)&data_addr.su_port; 1642 result = command("PORT %d,%d,%d,%d,%d,%d", 1643 UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]), 1644 UC(p[0]), UC(p[1])); 1645 break; 1646 #ifdef INET6 1647 case AF_INET6: 1648 a = (char *)&data_addr.si_su.su_sin6.sin6_addr; 1649 p = (char *)&data_addr.su_port; 1650 result = command( 1651 "LPRT %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d", 1652 6, 16, 1653 UC(a[0]),UC(a[1]),UC(a[2]),UC(a[3]), 1654 UC(a[4]),UC(a[5]),UC(a[6]),UC(a[7]), 1655 UC(a[8]),UC(a[9]),UC(a[10]),UC(a[11]), 1656 UC(a[12]),UC(a[13]),UC(a[14]),UC(a[15]), 1657 2, UC(p[0]), UC(p[1])); 1658 break; 1659 #endif 1660 default: 1661 result = COMPLETE + 1; /* xxx */ 1662 } 1663 if (!connected) 1664 return (1); 1665 skip_port: 1666 1667 if (result == ERROR && sendport == -1) { 1668 sendport = 0; 1669 tmpno = 1; 1670 goto noport; 1671 } 1672 return (result != COMPLETE); 1673 } 1674 if (tmpno) 1675 sendport = 1; 1676 #ifdef IPTOS_THROUGHPUT 1677 if (data_addr.su_family == AF_INET) { 1678 on = IPTOS_THROUGHPUT; 1679 if (setsockopt(data, IPPROTO_IP, IP_TOS, 1680 (void *)&on, sizeof(on)) == -1) 1681 DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT"); 1682 } 1683 #endif 1684 return (0); 1685 bad: 1686 (void)close(data); 1687 data = -1; 1688 if (tmpno) 1689 sendport = 1; 1690 return (1); 1691 } 1692 1693 FILE * 1694 dataconn(const char *lmode) 1695 { 1696 struct sockinet from; 1697 int s, flags, rv, timeout; 1698 struct timeval endtime, now, td; 1699 struct pollfd pfd[1]; 1700 socklen_t fromlen; 1701 1702 if (passivemode) /* passive data connection */ 1703 return (fdopen(data, lmode)); 1704 1705 /* active mode data connection */ 1706 1707 if ((flags = fcntl(data, F_GETFL, 0)) == -1) 1708 goto dataconn_failed; /* get current socket flags */ 1709 if (fcntl(data, F_SETFL, flags | O_NONBLOCK) == -1) 1710 goto dataconn_failed; /* set non-blocking connect */ 1711 1712 /* NOTE: we now must restore socket flags on successful exit */ 1713 1714 /* limit time waiting on listening socket */ 1715 pfd[0].fd = data; 1716 pfd[0].events = POLLIN; 1717 (void)gettimeofday(&endtime, NULL); /* determine end time */ 1718 endtime.tv_sec += (quit_time > 0) ? quit_time: 60; 1719 /* without -q, default to 60s */ 1720 do { 1721 (void)gettimeofday(&now, NULL); 1722 timersub(&endtime, &now, &td); 1723 timeout = td.tv_sec * 1000 + td.tv_usec/1000; 1724 if (timeout < 0) 1725 timeout = 0; 1726 rv = ftp_poll(pfd, 1, timeout); 1727 } while (rv == -1 && errno == EINTR); /* loop until poll ! EINTR */ 1728 if (rv == -1) { 1729 warn("poll waiting before accept"); 1730 goto dataconn_failed; 1731 } 1732 if (rv == 0) { 1733 warn("poll timeout waiting before accept"); 1734 goto dataconn_failed; 1735 } 1736 1737 /* (non-blocking) accept the connection */ 1738 fromlen = myctladdr.su_len; 1739 do { 1740 s = accept(data, (struct sockaddr *) &from.si_su, &fromlen); 1741 } while (s == -1 && errno == EINTR); /* loop until accept ! EINTR */ 1742 if (s == -1) { 1743 warn("accept"); 1744 goto dataconn_failed; 1745 } 1746 1747 (void)close(data); 1748 data = s; 1749 if (fcntl(data, F_SETFL, flags) == -1) /* restore socket flags */ 1750 goto dataconn_failed; 1751 1752 #ifdef IPTOS_THROUGHPUT 1753 if (from.su_family == AF_INET) { 1754 int tos = IPTOS_THROUGHPUT; 1755 if (setsockopt(s, IPPROTO_IP, IP_TOS, 1756 (void *)&tos, sizeof(tos)) == -1) { 1757 DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT"); 1758 } 1759 } 1760 #endif 1761 return (fdopen(data, lmode)); 1762 1763 dataconn_failed: 1764 (void)close(data); 1765 data = -1; 1766 return (NULL); 1767 } 1768 1769 void 1770 psabort(int notused) 1771 { 1772 int oerrno = errno; 1773 1774 sigint_raised = 1; 1775 alarmtimer(0); 1776 abrtflag++; 1777 errno = oerrno; 1778 } 1779 1780 void 1781 pswitch(int flag) 1782 { 1783 sigfunc oldintr; 1784 static struct comvars { 1785 int connect; 1786 char name[MAXHOSTNAMELEN]; 1787 struct sockinet mctl; 1788 struct sockinet hctl; 1789 FILE *in; 1790 FILE *out; 1791 int tpe; 1792 int curtpe; 1793 int cpnd; 1794 int sunqe; 1795 int runqe; 1796 int mcse; 1797 int ntflg; 1798 char nti[17]; 1799 char nto[17]; 1800 int mapflg; 1801 char mi[MAXPATHLEN]; 1802 char mo[MAXPATHLEN]; 1803 } proxstruct, tmpstruct; 1804 struct comvars *ip, *op; 1805 1806 abrtflag = 0; 1807 oldintr = xsignal(SIGINT, psabort); 1808 if (flag) { 1809 if (proxy) 1810 return; 1811 ip = &tmpstruct; 1812 op = &proxstruct; 1813 proxy++; 1814 } else { 1815 if (!proxy) 1816 return; 1817 ip = &proxstruct; 1818 op = &tmpstruct; 1819 proxy = 0; 1820 } 1821 ip->connect = connected; 1822 connected = op->connect; 1823 if (hostname) 1824 (void)strlcpy(ip->name, hostname, sizeof(ip->name)); 1825 else 1826 ip->name[0] = '\0'; 1827 hostname = op->name; 1828 ip->hctl = hisctladdr; 1829 hisctladdr = op->hctl; 1830 ip->mctl = myctladdr; 1831 myctladdr = op->mctl; 1832 ip->in = cin; 1833 cin = op->in; 1834 ip->out = cout; 1835 cout = op->out; 1836 ip->tpe = type; 1837 type = op->tpe; 1838 ip->curtpe = curtype; 1839 curtype = op->curtpe; 1840 ip->cpnd = cpend; 1841 cpend = op->cpnd; 1842 ip->sunqe = sunique; 1843 sunique = op->sunqe; 1844 ip->runqe = runique; 1845 runique = op->runqe; 1846 ip->mcse = mcase; 1847 mcase = op->mcse; 1848 ip->ntflg = ntflag; 1849 ntflag = op->ntflg; 1850 (void)strlcpy(ip->nti, ntin, sizeof(ip->nti)); 1851 (void)strlcpy(ntin, op->nti, sizeof(ntin)); 1852 (void)strlcpy(ip->nto, ntout, sizeof(ip->nto)); 1853 (void)strlcpy(ntout, op->nto, sizeof(ntout)); 1854 ip->mapflg = mapflag; 1855 mapflag = op->mapflg; 1856 (void)strlcpy(ip->mi, mapin, sizeof(ip->mi)); 1857 (void)strlcpy(mapin, op->mi, sizeof(mapin)); 1858 (void)strlcpy(ip->mo, mapout, sizeof(ip->mo)); 1859 (void)strlcpy(mapout, op->mo, sizeof(mapout)); 1860 (void)xsignal(SIGINT, oldintr); 1861 if (abrtflag) { 1862 abrtflag = 0; 1863 (*oldintr)(SIGINT); 1864 } 1865 } 1866 1867 void 1868 abortpt(int notused) 1869 { 1870 1871 sigint_raised = 1; 1872 alarmtimer(0); 1873 if (fromatty) 1874 write(fileno(ttyout), "\n", 1); 1875 ptabflg++; 1876 mflag = 0; 1877 abrtflag = 0; 1878 siglongjmp(ptabort, 1); 1879 } 1880 1881 void 1882 proxtrans(const char *cmd, const char *local, const char *remote) 1883 { 1884 sigfunc volatile oldintr; 1885 int prox_type, nfnd; 1886 int volatile secndflag; 1887 char *volatile cmd2; 1888 1889 oldintr = NULL; 1890 secndflag = 0; 1891 if (strcmp(cmd, "RETR")) 1892 cmd2 = "RETR"; 1893 else 1894 cmd2 = runique ? "STOU" : "STOR"; 1895 if ((prox_type = type) == 0) { 1896 if (unix_server && unix_proxy) 1897 prox_type = TYPE_I; 1898 else 1899 prox_type = TYPE_A; 1900 } 1901 if (curtype != prox_type) 1902 changetype(prox_type, 1); 1903 if (command("PASV") != COMPLETE) { 1904 fputs("proxy server does not support third party transfers.\n", 1905 ttyout); 1906 return; 1907 } 1908 pswitch(0); 1909 if (!connected) { 1910 fputs("No primary connection.\n", ttyout); 1911 pswitch(1); 1912 code = -1; 1913 return; 1914 } 1915 if (curtype != prox_type) 1916 changetype(prox_type, 1); 1917 if (command("PORT %s", pasv) != COMPLETE) { 1918 pswitch(1); 1919 return; 1920 } 1921 if (sigsetjmp(ptabort, 1)) 1922 goto abort; 1923 oldintr = xsignal(SIGINT, abortpt); 1924 if ((restart_point && 1925 (command("REST " LLF, (LLT) restart_point) != CONTINUE)) 1926 || (command("%s %s", cmd, remote) != PRELIM)) { 1927 (void)xsignal(SIGINT, oldintr); 1928 pswitch(1); 1929 return; 1930 } 1931 sleep(2); 1932 pswitch(1); 1933 secndflag++; 1934 if ((restart_point && 1935 (command("REST " LLF, (LLT) restart_point) != CONTINUE)) 1936 || (command("%s %s", cmd2, local) != PRELIM)) 1937 goto abort; 1938 ptflag++; 1939 (void)getreply(0); 1940 pswitch(0); 1941 (void)getreply(0); 1942 (void)xsignal(SIGINT, oldintr); 1943 pswitch(1); 1944 ptflag = 0; 1945 fprintf(ttyout, "local: %s remote: %s\n", local, remote); 1946 return; 1947 abort: 1948 if (sigsetjmp(xferabort, 1)) { 1949 (void)xsignal(SIGINT, oldintr); 1950 return; 1951 } 1952 (void)xsignal(SIGINT, abort_squared); 1953 ptflag = 0; 1954 if (strcmp(cmd, "RETR") && !proxy) 1955 pswitch(1); 1956 else if (!strcmp(cmd, "RETR") && proxy) 1957 pswitch(0); 1958 if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */ 1959 if (command("%s %s", cmd2, local) != PRELIM) { 1960 pswitch(0); 1961 if (cpend) 1962 abort_remote(NULL); 1963 } 1964 pswitch(1); 1965 if (ptabflg) 1966 code = -1; 1967 (void)xsignal(SIGINT, oldintr); 1968 return; 1969 } 1970 if (cpend) 1971 abort_remote(NULL); 1972 pswitch(!proxy); 1973 if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */ 1974 if (command("%s %s", cmd2, local) != PRELIM) { 1975 pswitch(0); 1976 if (cpend) 1977 abort_remote(NULL); 1978 pswitch(1); 1979 if (ptabflg) 1980 code = -1; 1981 (void)xsignal(SIGINT, oldintr); 1982 return; 1983 } 1984 } 1985 if (cpend) 1986 abort_remote(NULL); 1987 pswitch(!proxy); 1988 if (cpend) { 1989 if ((nfnd = empty(cin, NULL, 10)) <= 0) { 1990 if (nfnd < 0) 1991 warn("abort"); 1992 if (ptabflg) 1993 code = -1; 1994 lostpeer(0); 1995 } 1996 (void)getreply(0); 1997 (void)getreply(0); 1998 } 1999 if (proxy) 2000 pswitch(0); 2001 pswitch(1); 2002 if (ptabflg) 2003 code = -1; 2004 (void)xsignal(SIGINT, oldintr); 2005 } 2006 2007 void 2008 reset(int argc, char *argv[]) 2009 { 2010 int nfnd = 1; 2011 2012 if (argc == 0 && argv != NULL) { 2013 UPRINTF("usage: %s\n", argv[0]); 2014 code = -1; 2015 return; 2016 } 2017 while (nfnd > 0) { 2018 if ((nfnd = empty(cin, NULL, 0)) < 0) { 2019 warn("reset"); 2020 code = -1; 2021 lostpeer(0); 2022 } else if (nfnd) 2023 (void)getreply(0); 2024 } 2025 } 2026 2027 char * 2028 gunique(const char *local) 2029 { 2030 static char new[MAXPATHLEN]; 2031 char *cp = strrchr(local, '/'); 2032 int d, count=0, len; 2033 char ext = '1'; 2034 2035 if (cp) 2036 *cp = '\0'; 2037 d = access(cp == local ? "/" : cp ? local : ".", W_OK); 2038 if (cp) 2039 *cp = '/'; 2040 if (d < 0) { 2041 warn("local: %s", local); 2042 return (NULL); 2043 } 2044 len = strlcpy(new, local, sizeof(new)); 2045 cp = &new[len]; 2046 *cp++ = '.'; 2047 while (!d) { 2048 if (++count == 100) { 2049 fputs("runique: can't find unique file name.\n", 2050 ttyout); 2051 return (NULL); 2052 } 2053 *cp++ = ext; 2054 *cp = '\0'; 2055 if (ext == '9') 2056 ext = '0'; 2057 else 2058 ext++; 2059 if ((d = access(new, F_OK)) < 0) 2060 break; 2061 if (ext != '0') 2062 cp--; 2063 else if (*(cp - 2) == '.') 2064 *(cp - 1) = '1'; 2065 else { 2066 *(cp - 2) = *(cp - 2) + 1; 2067 cp--; 2068 } 2069 } 2070 return (new); 2071 } 2072 2073 /* 2074 * abort_squared -- 2075 * aborts abort_remote(). lostpeer() is called because if the user is 2076 * too impatient to wait or there's another problem then ftp really 2077 * needs to get back to a known state. 2078 */ 2079 void 2080 abort_squared(int dummy) 2081 { 2082 char msgbuf[100]; 2083 size_t len; 2084 2085 sigint_raised = 1; 2086 alarmtimer(0); 2087 len = strlcpy(msgbuf, "\nremote abort aborted; closing connection.\n", 2088 sizeof(msgbuf)); 2089 write(fileno(ttyout), msgbuf, len); 2090 lostpeer(0); 2091 siglongjmp(xferabort, 1); 2092 } 2093 2094 void 2095 abort_remote(FILE *din) 2096 { 2097 char buf[BUFSIZ]; 2098 int nfnd; 2099 2100 if (cout == NULL) { 2101 warnx("Lost control connection for abort."); 2102 if (ptabflg) 2103 code = -1; 2104 lostpeer(0); 2105 return; 2106 } 2107 /* 2108 * send IAC in urgent mode instead of DM because 4.3BSD places oob mark 2109 * after urgent byte rather than before as is protocol now 2110 */ 2111 buf[0] = IAC; 2112 buf[1] = IP; 2113 buf[2] = IAC; 2114 if (send(fileno(cout), buf, 3, MSG_OOB) != 3) 2115 warn("abort"); 2116 fprintf(cout, "%cABOR\r\n", DM); 2117 (void)fflush(cout); 2118 if ((nfnd = empty(cin, din, 10)) <= 0) { 2119 if (nfnd < 0) 2120 warn("abort"); 2121 if (ptabflg) 2122 code = -1; 2123 lostpeer(0); 2124 } 2125 if (din && (nfnd & 2)) { 2126 while (read(fileno(din), buf, BUFSIZ) > 0) 2127 continue; 2128 } 2129 if (getreply(0) == ERROR && code == 552) { 2130 /* 552 needed for nic style abort */ 2131 (void)getreply(0); 2132 } 2133 (void)getreply(0); 2134 } 2135 2136 void 2137 ai_unmapped(struct addrinfo *ai) 2138 { 2139 #ifdef INET6 2140 struct sockaddr_in6 *sin6; 2141 struct sockaddr_in sin; 2142 socklen_t len; 2143 2144 if (ai->ai_family != AF_INET6) 2145 return; 2146 if (ai->ai_addrlen != sizeof(struct sockaddr_in6) || 2147 sizeof(sin) > ai->ai_addrlen) 2148 return; 2149 sin6 = (struct sockaddr_in6 *)ai->ai_addr; 2150 if (!IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) 2151 return; 2152 2153 memset(&sin, 0, sizeof(sin)); 2154 sin.sin_family = AF_INET; 2155 len = sizeof(struct sockaddr_in); 2156 memcpy(&sin.sin_addr, &sin6->sin6_addr.s6_addr[12], 2157 sizeof(sin.sin_addr)); 2158 sin.sin_port = sin6->sin6_port; 2159 2160 ai->ai_family = AF_INET; 2161 #if HAVE_SOCKADDR_SA_LEN 2162 sin.sin_len = len; 2163 #endif 2164 memcpy(ai->ai_addr, &sin, len); 2165 ai->ai_addrlen = len; 2166 #endif 2167 } 2168 2169 #ifdef NO_USAGE 2170 void 2171 xusage(void) 2172 { 2173 fputs("Usage error\n", ttyout); 2174 } 2175 #endif 2176
Indexes created Tue Oct 21 16:10:11 GMT 2025