ftp.c revision 1.142 1 1.142 christos /* $NetBSD: ftp.c,v 1.142 2006/10/23 19:53:24 christos Exp $ */
2 1.77 lukem
3 1.77 lukem /*-
4 1.127 lukem * Copyright (c) 1996-2005 The NetBSD Foundation, Inc.
5 1.77 lukem * All rights reserved.
6 1.77 lukem *
7 1.77 lukem * This code is derived from software contributed to The NetBSD Foundation
8 1.77 lukem * by Luke Mewburn.
9 1.77 lukem *
10 1.77 lukem * Redistribution and use in source and binary forms, with or without
11 1.77 lukem * modification, are permitted provided that the following conditions
12 1.77 lukem * are met:
13 1.77 lukem * 1. Redistributions of source code must retain the above copyright
14 1.77 lukem * notice, this list of conditions and the following disclaimer.
15 1.77 lukem * 2. Redistributions in binary form must reproduce the above copyright
16 1.77 lukem * notice, this list of conditions and the following disclaimer in the
17 1.77 lukem * documentation and/or other materials provided with the distribution.
18 1.77 lukem * 3. All advertising materials mentioning features or use of this software
19 1.77 lukem * must display the following acknowledgement:
20 1.77 lukem * This product includes software developed by the NetBSD
21 1.77 lukem * Foundation, Inc. and its contributors.
22 1.77 lukem * 4. Neither the name of The NetBSD Foundation nor the names of its
23 1.77 lukem * contributors may be used to endorse or promote products derived
24 1.77 lukem * from this software without specific prior written permission.
25 1.77 lukem *
26 1.77 lukem * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 1.77 lukem * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 1.77 lukem * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 1.77 lukem * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 1.77 lukem * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 1.77 lukem * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 1.77 lukem * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 1.77 lukem * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 1.77 lukem * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 1.77 lukem * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 1.77 lukem * POSSIBILITY OF SUCH DAMAGE.
37 1.77 lukem */
38 1.48 itojun
39 1.48 itojun /*
40 1.72 lukem * Copyright (c) 1985, 1989, 1993, 1994
41 1.72 lukem * The Regents of the University of California. All rights reserved.
42 1.72 lukem *
43 1.48 itojun * Redistribution and use in source and binary forms, with or without
44 1.48 itojun * modification, are permitted provided that the following conditions
45 1.48 itojun * are met:
46 1.48 itojun * 1. Redistributions of source code must retain the above copyright
47 1.48 itojun * notice, this list of conditions and the following disclaimer.
48 1.48 itojun * 2. Redistributions in binary form must reproduce the above copyright
49 1.48 itojun * notice, this list of conditions and the following disclaimer in the
50 1.48 itojun * documentation and/or other materials provided with the distribution.
51 1.122 agc * 3. Neither the name of the University nor the names of its contributors
52 1.48 itojun * may be used to endorse or promote products derived from this software
53 1.48 itojun * without specific prior written permission.
54 1.72 lukem *
55 1.72 lukem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 1.48 itojun * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 1.48 itojun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 1.72 lukem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 1.48 itojun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 1.48 itojun * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 1.48 itojun * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 1.48 itojun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 1.48 itojun * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 1.48 itojun * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 1.48 itojun * SUCH DAMAGE.
66 1.48 itojun */
67 1.12 tls
68 1.1 cgd /*
69 1.72 lukem * Copyright (C) 1997 and 1998 WIDE Project.
70 1.72 lukem * All rights reserved.
71 1.128 lukem *
72 1.1 cgd * Redistribution and use in source and binary forms, with or without
73 1.1 cgd * modification, are permitted provided that the following conditions
74 1.1 cgd * are met:
75 1.1 cgd * 1. Redistributions of source code must retain the above copyright
76 1.1 cgd * notice, this list of conditions and the following disclaimer.
77 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
78 1.1 cgd * notice, this list of conditions and the following disclaimer in the
79 1.1 cgd * documentation and/or other materials provided with the distribution.
80 1.72 lukem * 3. Neither the name of the project nor the names of its contributors
81 1.1 cgd * may be used to endorse or promote products derived from this software
82 1.1 cgd * without specific prior written permission.
83 1.128 lukem *
84 1.72 lukem * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
85 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87 1.72 lukem * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
88 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
89 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
90 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94 1.1 cgd * SUCH DAMAGE.
95 1.1 cgd */
96 1.1 cgd
97 1.26 lukem #include <sys/cdefs.h>
98 1.1 cgd #ifndef lint
99 1.12 tls #if 0
100 1.12 tls static char sccsid[] = "@(#)ftp.c 8.6 (Berkeley) 10/27/94";
101 1.12 tls #else
102 1.142 christos __RCSID("$NetBSD: ftp.c,v 1.142 2006/10/23 19:53:24 christos Exp $");
103 1.12 tls #endif
104 1.1 cgd #endif /* not lint */
105 1.1 cgd
106 1.21 lukem #include <sys/types.h>
107 1.1 cgd #include <sys/stat.h>
108 1.1 cgd #include <sys/socket.h>
109 1.33 christos #include <sys/time.h>
110 1.1 cgd
111 1.1 cgd #include <netinet/in.h>
112 1.1 cgd #include <netinet/in_systm.h>
113 1.1 cgd #include <netinet/ip.h>
114 1.6 cgd #include <arpa/inet.h>
115 1.1 cgd #include <arpa/ftp.h>
116 1.1 cgd #include <arpa/telnet.h>
117 1.1 cgd
118 1.6 cgd #include <ctype.h>
119 1.6 cgd #include <err.h>
120 1.1 cgd #include <errno.h>
121 1.127 lukem #include <fcntl.h>
122 1.1 cgd #include <netdb.h>
123 1.6 cgd #include <stdio.h>
124 1.6 cgd #include <stdlib.h>
125 1.6 cgd #include <string.h>
126 1.32 kleink #include <time.h>
127 1.6 cgd #include <unistd.h>
128 1.23 lukem #include <stdarg.h>
129 1.1 cgd
130 1.1 cgd #include "ftp_var.h"
131 1.48 itojun
132 1.126 lukem volatile sig_atomic_t abrtflag;
133 1.126 lukem volatile sig_atomic_t timeoutflag;
134 1.126 lukem
135 1.83 lukem sigjmp_buf ptabort;
136 1.6 cgd int ptabflg;
137 1.1 cgd int ptflag = 0;
138 1.73 lukem char pasv[BUFSIZ]; /* passive port for proxy data connection */
139 1.1 cgd
140 1.95 lukem static int empty(FILE *, FILE *, int);
141 1.45 christos
142 1.104 lukem struct sockinet {
143 1.104 lukem union sockunion {
144 1.104 lukem struct sockaddr_in su_sin;
145 1.62 lukem #ifdef INET6
146 1.104 lukem struct sockaddr_in6 su_sin6;
147 1.62 lukem #endif
148 1.104 lukem } si_su;
149 1.107 lukem #if !HAVE_SOCKADDR_SA_LEN
150 1.104 lukem int si_len;
151 1.62 lukem #endif
152 1.48 itojun };
153 1.52 christos
154 1.107 lukem #if !HAVE_SOCKADDR_SA_LEN
155 1.104 lukem # define su_len si_len
156 1.104 lukem #else
157 1.104 lukem # define su_len si_su.su_sin.sin_len
158 1.104 lukem #endif
159 1.104 lukem #define su_family si_su.su_sin.sin_family
160 1.104 lukem #define su_port si_su.su_sin.sin_port
161 1.48 itojun
162 1.104 lukem struct sockinet myctladdr, hisctladdr, data_addr;
163 1.1 cgd
164 1.1 cgd char *
165 1.95 lukem hookup(char *host, char *port)
166 1.1 cgd {
167 1.132 lukem int s = -1, error, portnum;
168 1.49 itojun struct addrinfo hints, *res, *res0;
169 1.58 christos char hbuf[MAXHOSTNAMELEN];
170 1.14 lukem static char hostnamebuf[MAXHOSTNAMELEN];
171 1.49 itojun char *cause = "unknown";
172 1.132 lukem socklen_t len;
173 1.130 lukem int on = 1;
174 1.108 lukem
175 1.48 itojun memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
176 1.106 lukem memset((char *)&myctladdr, 0, sizeof (myctladdr));
177 1.48 itojun memset(&hints, 0, sizeof(hints));
178 1.108 lukem portnum = parseport(port, FTP_PORT);
179 1.48 itojun hints.ai_flags = AI_CANONNAME;
180 1.116 lukem hints.ai_family = family;
181 1.48 itojun hints.ai_socktype = SOCK_STREAM;
182 1.48 itojun hints.ai_protocol = 0;
183 1.108 lukem error = getaddrinfo(host, NULL, &hints, &res0);
184 1.48 itojun if (error) {
185 1.134 lukem warnx("%s: %s", host, gai_strerror(error));
186 1.48 itojun code = -1;
187 1.48 itojun return (0);
188 1.48 itojun }
189 1.1 cgd
190 1.49 itojun if (res0->ai_canonname)
191 1.68 lukem (void)strlcpy(hostnamebuf, res0->ai_canonname,
192 1.68 lukem sizeof(hostnamebuf));
193 1.48 itojun else
194 1.68 lukem (void)strlcpy(hostnamebuf, host, sizeof(hostnamebuf));
195 1.1 cgd hostname = hostnamebuf;
196 1.128 lukem
197 1.49 itojun for (res = res0; res; res = res->ai_next) {
198 1.96 itojun /*
199 1.96 itojun * make sure that ai_addr is NOT an IPv4 mapped address.
200 1.96 itojun * IPv4 mapped address complicates too many things in FTP
201 1.96 itojun * protocol handling, as FTP protocol is defined differently
202 1.96 itojun * between IPv4 and IPv6.
203 1.97 itojun *
204 1.97 itojun * This may not be the best way to handle this situation,
205 1.97 itojun * since the semantics of IPv4 mapped address is defined in
206 1.97 itojun * the kernel. There are configurations where we should use
207 1.97 itojun * IPv4 mapped address as native IPv6 address, not as
208 1.97 itojun * "an IPv6 address that embeds IPv4 address" (namely, SIIT).
209 1.97 itojun *
210 1.97 itojun * More complete solution would be to have an additional
211 1.97 itojun * getsockopt to grab "real" peername/sockname. "real"
212 1.97 itojun * peername/sockname will be AF_INET if IPv4 mapped address
213 1.97 itojun * is used to embed IPv4 address, and will be AF_INET6 if
214 1.97 itojun * we use it as native. What a mess!
215 1.96 itojun */
216 1.96 itojun ai_unmapped(res);
217 1.133 lukem if (verbose && res0->ai_next) {
218 1.133 lukem /* if we have multiple possibilities */
219 1.112 itojun if (getnameinfo(res->ai_addr, res->ai_addrlen,
220 1.112 itojun hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST))
221 1.112 itojun strlcpy(hbuf, "?", sizeof(hbuf));
222 1.49 itojun fprintf(ttyout, "Trying %s...\n", hbuf);
223 1.49 itojun }
224 1.108 lukem ((struct sockaddr_in *)res->ai_addr)->sin_port = htons(portnum);
225 1.109 lukem s = socket(res->ai_family, SOCK_STREAM, res->ai_protocol);
226 1.49 itojun if (s < 0) {
227 1.49 itojun cause = "socket";
228 1.49 itojun continue;
229 1.49 itojun }
230 1.136 christos error = ftp_connect(s, res->ai_addr, res->ai_addrlen);
231 1.49 itojun if (error) {
232 1.49 itojun /* this "if" clause is to prevent print warning twice */
233 1.49 itojun if (res->ai_next) {
234 1.112 itojun if (getnameinfo(res->ai_addr, res->ai_addrlen,
235 1.106 lukem hbuf, sizeof(hbuf), NULL, 0,
236 1.112 itojun NI_NUMERICHOST))
237 1.112 itojun strlcpy(hbuf, "?", sizeof(hbuf));
238 1.49 itojun warn("connect to address %s", hbuf);
239 1.1 cgd }
240 1.49 itojun cause = "connect";
241 1.49 itojun close(s);
242 1.49 itojun s = -1;
243 1.1 cgd continue;
244 1.1 cgd }
245 1.49 itojun
246 1.49 itojun /* finally we got one */
247 1.49 itojun break;
248 1.49 itojun }
249 1.49 itojun if (s < 0) {
250 1.101 itojun warn("%s", cause);
251 1.1 cgd code = -1;
252 1.50 itojun freeaddrinfo(res0);
253 1.49 itojun return 0;
254 1.1 cgd }
255 1.104 lukem memcpy(&hisctladdr.si_su, res->ai_addr, res->ai_addrlen);
256 1.104 lukem hisctladdr.su_len = res->ai_addrlen;
257 1.49 itojun freeaddrinfo(res0);
258 1.49 itojun res0 = res = NULL;
259 1.58 christos
260 1.105 lukem len = hisctladdr.su_len;
261 1.132 lukem if (getsockname(s, (struct sockaddr *)&myctladdr.si_su, &len) == -1) {
262 1.6 cgd warn("getsockname");
263 1.1 cgd code = -1;
264 1.1 cgd goto bad;
265 1.1 cgd }
266 1.105 lukem myctladdr.su_len = len;
267 1.58 christos
268 1.92 lukem #ifdef IPTOS_LOWDELAY
269 1.104 lukem if (hisctladdr.su_family == AF_INET) {
270 1.53 christos int tos = IPTOS_LOWDELAY;
271 1.130 lukem if (setsockopt(s, IPPROTO_IP, IP_TOS,
272 1.131 lukem (void *)&tos, sizeof(tos)) == -1) {
273 1.135 christos DWARN("setsockopt %s (ignored)",
274 1.130 lukem "IPTOS_LOWDELAY");
275 1.130 lukem }
276 1.48 itojun }
277 1.92 lukem #endif
278 1.1 cgd cin = fdopen(s, "r");
279 1.1 cgd cout = fdopen(s, "w");
280 1.1 cgd if (cin == NULL || cout == NULL) {
281 1.6 cgd warnx("fdopen failed.");
282 1.1 cgd if (cin)
283 1.23 lukem (void)fclose(cin);
284 1.1 cgd if (cout)
285 1.23 lukem (void)fclose(cout);
286 1.1 cgd code = -1;
287 1.1 cgd goto bad;
288 1.1 cgd }
289 1.1 cgd if (verbose)
290 1.35 lukem fprintf(ttyout, "Connected to %s.\n", hostname);
291 1.87 lukem if (getreply(0) > 2) { /* read startup message from server */
292 1.1 cgd if (cin)
293 1.23 lukem (void)fclose(cin);
294 1.1 cgd if (cout)
295 1.23 lukem (void)fclose(cout);
296 1.1 cgd code = -1;
297 1.1 cgd goto bad;
298 1.1 cgd }
299 1.1 cgd
300 1.130 lukem if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE,
301 1.130 lukem (void *)&on, sizeof(on)) == -1) {
302 1.135 christos DWARN("setsockopt %s (ignored)", "SO_OOBINLINE");
303 1.1 cgd }
304 1.1 cgd
305 1.1 cgd return (hostname);
306 1.102 lukem bad:
307 1.23 lukem (void)close(s);
308 1.31 lukem return (NULL);
309 1.1 cgd }
310 1.1 cgd
311 1.1 cgd void
312 1.95 lukem cmdabort(int notused)
313 1.1 cgd {
314 1.81 lukem int oerrno = errno;
315 1.1 cgd
316 1.126 lukem sigint_raised = 1;
317 1.22 lukem alarmtimer(0);
318 1.84 lukem if (fromatty)
319 1.84 lukem write(fileno(ttyout), "\n", 1);
320 1.1 cgd abrtflag++;
321 1.1 cgd if (ptflag)
322 1.81 lukem siglongjmp(ptabort, 1);
323 1.81 lukem errno = oerrno;
324 1.1 cgd }
325 1.1 cgd
326 1.76 lukem void
327 1.95 lukem cmdtimeout(int notused)
328 1.76 lukem {
329 1.81 lukem int oerrno = errno;
330 1.76 lukem
331 1.76 lukem alarmtimer(0);
332 1.84 lukem if (fromatty)
333 1.84 lukem write(fileno(ttyout), "\n", 1);
334 1.76 lukem timeoutflag++;
335 1.76 lukem if (ptflag)
336 1.81 lukem siglongjmp(ptabort, 1);
337 1.81 lukem errno = oerrno;
338 1.76 lukem }
339 1.76 lukem
340 1.1 cgd /*VARARGS*/
341 1.6 cgd int
342 1.23 lukem command(const char *fmt, ...)
343 1.1 cgd {
344 1.1 cgd va_list ap;
345 1.1 cgd int r;
346 1.90 lukem sigfunc oldsigint;
347 1.1 cgd
348 1.135 christos #ifndef NO_DEBUG
349 1.137 christos if (ftp_debug) {
350 1.35 lukem fputs("---> ", ttyout);
351 1.23 lukem va_start(ap, fmt);
352 1.1 cgd if (strncmp("PASS ", fmt, 5) == 0)
353 1.35 lukem fputs("PASS XXXX", ttyout);
354 1.14 lukem else if (strncmp("ACCT ", fmt, 5) == 0)
355 1.35 lukem fputs("ACCT XXXX", ttyout);
356 1.14 lukem else
357 1.35 lukem vfprintf(ttyout, fmt, ap);
358 1.1 cgd va_end(ap);
359 1.35 lukem putc('\n', ttyout);
360 1.1 cgd }
361 1.135 christos #endif
362 1.1 cgd if (cout == NULL) {
363 1.23 lukem warnx("No control connection for command.");
364 1.1 cgd code = -1;
365 1.1 cgd return (0);
366 1.1 cgd }
367 1.76 lukem
368 1.76 lukem abrtflag = 0;
369 1.76 lukem
370 1.76 lukem oldsigint = xsignal(SIGINT, cmdabort);
371 1.76 lukem
372 1.23 lukem va_start(ap, fmt);
373 1.1 cgd vfprintf(cout, fmt, ap);
374 1.1 cgd va_end(ap);
375 1.23 lukem fputs("\r\n", cout);
376 1.23 lukem (void)fflush(cout);
377 1.1 cgd cpend = 1;
378 1.1 cgd r = getreply(!strcmp(fmt, "QUIT"));
379 1.76 lukem if (abrtflag && oldsigint != SIG_IGN)
380 1.76 lukem (*oldsigint)(SIGINT);
381 1.76 lukem (void)xsignal(SIGINT, oldsigint);
382 1.6 cgd return (r);
383 1.1 cgd }
384 1.1 cgd
385 1.142 christos static const char *m421[] = {
386 1.142 christos "remote server timed out. Connection closed",
387 1.142 christos "user interrupt. Connection closed",
388 1.142 christos "remote server has closed connection",
389 1.142 christos };
390 1.142 christos
391 1.6 cgd int
392 1.95 lukem getreply(int expecteof)
393 1.1 cgd {
394 1.16 lukem char current_line[BUFSIZ]; /* last line of previous reply */
395 1.16 lukem int c, n, line;
396 1.6 cgd int dig;
397 1.1 cgd int originalcode = 0, continuation = 0;
398 1.90 lukem sigfunc oldsigint, oldsigalrm;
399 1.1 cgd int pflag = 0;
400 1.6 cgd char *cp, *pt = pasv;
401 1.1 cgd
402 1.76 lukem abrtflag = 0;
403 1.76 lukem timeoutflag = 0;
404 1.76 lukem
405 1.76 lukem oldsigint = xsignal(SIGINT, cmdabort);
406 1.76 lukem oldsigalrm = xsignal(SIGALRM, cmdtimeout);
407 1.76 lukem
408 1.16 lukem for (line = 0 ;; line++) {
409 1.1 cgd dig = n = code = 0;
410 1.16 lukem cp = current_line;
411 1.141 elad while (alarmtimer(quit_time ? quit_time : 60),
412 1.141 elad ((c = getc(cin)) != '\n')) {
413 1.1 cgd if (c == IAC) { /* handle telnet commands */
414 1.1 cgd switch (c = getc(cin)) {
415 1.1 cgd case WILL:
416 1.1 cgd case WONT:
417 1.1 cgd c = getc(cin);
418 1.1 cgd fprintf(cout, "%c%c%c", IAC, DONT, c);
419 1.23 lukem (void)fflush(cout);
420 1.1 cgd break;
421 1.1 cgd case DO:
422 1.1 cgd case DONT:
423 1.1 cgd c = getc(cin);
424 1.1 cgd fprintf(cout, "%c%c%c", IAC, WONT, c);
425 1.23 lukem (void)fflush(cout);
426 1.1 cgd break;
427 1.1 cgd default:
428 1.1 cgd break;
429 1.1 cgd }
430 1.1 cgd continue;
431 1.1 cgd }
432 1.1 cgd dig++;
433 1.1 cgd if (c == EOF) {
434 1.76 lukem /*
435 1.76 lukem * these will get trashed by pswitch()
436 1.76 lukem * in lostpeer()
437 1.76 lukem */
438 1.76 lukem int reply_timeoutflag = timeoutflag;
439 1.76 lukem int reply_abrtflag = abrtflag;
440 1.76 lukem
441 1.85 lukem alarmtimer(0);
442 1.85 lukem if (expecteof && feof(cin)) {
443 1.76 lukem (void)xsignal(SIGINT, oldsigint);
444 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
445 1.1 cgd code = 221;
446 1.1 cgd return (0);
447 1.1 cgd }
448 1.85 lukem cpend = 0;
449 1.85 lukem lostpeer(0);
450 1.1 cgd if (verbose) {
451 1.142 christos size_t midx;
452 1.76 lukem if (reply_timeoutflag)
453 1.142 christos midx = 0;
454 1.76 lukem else if (reply_abrtflag)
455 1.142 christos midx = 1;
456 1.76 lukem else
457 1.142 christos midx = 2;
458 1.142 christos (void)fprintf(ttyout,
459 1.142 christos "421 Service not available, %s.\n", m421[midx]);
460 1.76 lukem (void)fflush(ttyout);
461 1.1 cgd }
462 1.1 cgd code = 421;
463 1.76 lukem (void)xsignal(SIGINT, oldsigint);
464 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
465 1.6 cgd return (4);
466 1.1 cgd }
467 1.1 cgd if (c != '\r' && (verbose > 0 ||
468 1.35 lukem ((verbose > -1 && n == '5' && dig > 4) &&
469 1.35 lukem (((!n && c < '5') || (n && n < '5'))
470 1.35 lukem || !retry_connect)))) {
471 1.1 cgd if (proxflag &&
472 1.16 lukem (dig == 1 || (dig == 5 && verbose == 0)))
473 1.35 lukem fprintf(ttyout, "%s:", hostname);
474 1.35 lukem (void)putc(c, ttyout);
475 1.1 cgd }
476 1.1 cgd if (dig < 4 && isdigit(c))
477 1.1 cgd code = code * 10 + (c - '0');
478 1.48 itojun if (!pflag && (code == 227 || code == 228))
479 1.1 cgd pflag = 1;
480 1.48 itojun else if (!pflag && code == 229)
481 1.48 itojun pflag = 100;
482 1.1 cgd if (dig > 4 && pflag == 1 && isdigit(c))
483 1.1 cgd pflag = 2;
484 1.1 cgd if (pflag == 2) {
485 1.118 itojun if (c != '\r' && c != ')') {
486 1.118 itojun if (pt < &pasv[sizeof(pasv) - 1])
487 1.118 itojun *pt++ = c;
488 1.118 itojun } else {
489 1.1 cgd *pt = '\0';
490 1.1 cgd pflag = 3;
491 1.1 cgd }
492 1.1 cgd }
493 1.48 itojun if (pflag == 100 && c == '(')
494 1.48 itojun pflag = 2;
495 1.1 cgd if (dig == 4 && c == '-') {
496 1.1 cgd if (continuation)
497 1.1 cgd code = 0;
498 1.1 cgd continuation++;
499 1.1 cgd }
500 1.1 cgd if (n == 0)
501 1.1 cgd n = c;
502 1.16 lukem if (cp < ¤t_line[sizeof(current_line) - 1])
503 1.1 cgd *cp++ = c;
504 1.1 cgd }
505 1.35 lukem if (verbose > 0 || ((verbose > -1 && n == '5') &&
506 1.35 lukem (n < '5' || !retry_connect))) {
507 1.35 lukem (void)putc(c, ttyout);
508 1.35 lukem (void)fflush (ttyout);
509 1.1 cgd }
510 1.102 lukem if (cp[-1] == '\r')
511 1.102 lukem cp[-1] = '\0';
512 1.102 lukem *cp = '\0';
513 1.102 lukem if (line == 0)
514 1.102 lukem (void)strlcpy(reply_string, current_line,
515 1.102 lukem sizeof(reply_string));
516 1.102 lukem if (line > 0 && code == 0 && reply_callback != NULL)
517 1.102 lukem (*reply_callback)(current_line);
518 1.1 cgd if (continuation && code != originalcode) {
519 1.1 cgd if (originalcode == 0)
520 1.1 cgd originalcode = code;
521 1.1 cgd continue;
522 1.1 cgd }
523 1.1 cgd if (n != '1')
524 1.1 cgd cpend = 0;
525 1.85 lukem alarmtimer(0);
526 1.76 lukem (void)xsignal(SIGINT, oldsigint);
527 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
528 1.1 cgd if (code == 421 || originalcode == 421)
529 1.85 lukem lostpeer(0);
530 1.76 lukem if (abrtflag && oldsigint != cmdabort && oldsigint != SIG_IGN)
531 1.76 lukem (*oldsigint)(SIGINT);
532 1.76 lukem if (timeoutflag && oldsigalrm != cmdtimeout &&
533 1.76 lukem oldsigalrm != SIG_IGN)
534 1.76 lukem (*oldsigalrm)(SIGINT);
535 1.1 cgd return (n - '0');
536 1.1 cgd }
537 1.1 cgd }
538 1.1 cgd
539 1.45 christos static int
540 1.95 lukem empty(FILE *cin, FILE *din, int sec)
541 1.1 cgd {
542 1.127 lukem int nr, nfd;
543 1.127 lukem struct pollfd pfd[2];
544 1.45 christos
545 1.127 lukem nfd = 0;
546 1.45 christos if (cin) {
547 1.124 lukem pfd[nfd].fd = fileno(cin);
548 1.124 lukem pfd[nfd++].events = POLLIN;
549 1.45 christos }
550 1.45 christos
551 1.45 christos if (din) {
552 1.124 lukem pfd[nfd].fd = fileno(din);
553 1.124 lukem pfd[nfd++].events = POLLIN;
554 1.45 christos }
555 1.45 christos
556 1.136 christos if ((nr = ftp_poll(pfd, nfd, sec * 1000)) <= 0)
557 1.45 christos return nr;
558 1.45 christos
559 1.45 christos nr = 0;
560 1.45 christos nfd = 0;
561 1.45 christos if (cin)
562 1.45 christos nr |= (pfd[nfd++].revents & POLLIN) ? 1 : 0;
563 1.45 christos if (din)
564 1.45 christos nr |= (pfd[nfd++].revents & POLLIN) ? 2 : 0;
565 1.45 christos return nr;
566 1.1 cgd }
567 1.1 cgd
568 1.83 lukem sigjmp_buf xferabort;
569 1.1 cgd
570 1.1 cgd void
571 1.95 lukem abortxfer(int notused)
572 1.1 cgd {
573 1.81 lukem char msgbuf[100];
574 1.132 lukem size_t len;
575 1.1 cgd
576 1.126 lukem sigint_raised = 1;
577 1.22 lukem alarmtimer(0);
578 1.1 cgd mflag = 0;
579 1.1 cgd abrtflag = 0;
580 1.81 lukem switch (direction[0]) {
581 1.81 lukem case 'r':
582 1.81 lukem strlcpy(msgbuf, "\nreceive", sizeof(msgbuf));
583 1.81 lukem break;
584 1.81 lukem case 's':
585 1.81 lukem strlcpy(msgbuf, "\nsend", sizeof(msgbuf));
586 1.81 lukem break;
587 1.81 lukem default:
588 1.85 lukem errx(1, "abortxfer called with unknown direction `%s'",
589 1.81 lukem direction);
590 1.81 lukem }
591 1.85 lukem len = strlcat(msgbuf, " aborted. Waiting for remote to finish abort.\n",
592 1.81 lukem sizeof(msgbuf));
593 1.81 lukem write(fileno(ttyout), msgbuf, len);
594 1.81 lukem siglongjmp(xferabort, 1);
595 1.1 cgd }
596 1.1 cgd
597 1.6 cgd void
598 1.95 lukem sendrequest(const char *cmd, const char *local, const char *remote,
599 1.95 lukem int printnames)
600 1.1 cgd {
601 1.1 cgd struct stat st;
602 1.6 cgd int c, d;
603 1.26 lukem FILE *fin, *dout;
604 1.95 lukem int (*closefunc)(FILE *);
605 1.90 lukem sigfunc oldintr, oldintp;
606 1.26 lukem volatile off_t hashbytes;
607 1.64 lukem char *lmode, *bufp;
608 1.64 lukem static size_t bufsize;
609 1.64 lukem static char *buf;
610 1.23 lukem int oprogress;
611 1.1 cgd
612 1.35 lukem #ifdef __GNUC__ /* to shut up gcc warnings */
613 1.26 lukem (void)&fin;
614 1.26 lukem (void)&dout;
615 1.26 lukem (void)&closefunc;
616 1.26 lukem (void)&oldintr;
617 1.26 lukem (void)&oldintp;
618 1.26 lukem (void)&lmode;
619 1.140 mrg fin = NULL; /* XXX gcc4 */
620 1.26 lukem #endif
621 1.26 lukem
622 1.16 lukem hashbytes = mark;
623 1.14 lukem direction = "sent";
624 1.26 lukem dout = NULL;
625 1.14 lukem bytes = 0;
626 1.16 lukem filesize = -1;
627 1.23 lukem oprogress = progress;
628 1.1 cgd if (verbose && printnames) {
629 1.138 christos if (*local != '-')
630 1.35 lukem fprintf(ttyout, "local: %s ", local);
631 1.1 cgd if (remote)
632 1.35 lukem fprintf(ttyout, "remote: %s\n", remote);
633 1.1 cgd }
634 1.1 cgd if (proxy) {
635 1.1 cgd proxtrans(cmd, local, remote);
636 1.1 cgd return;
637 1.1 cgd }
638 1.1 cgd if (curtype != type)
639 1.1 cgd changetype(type, 0);
640 1.1 cgd closefunc = NULL;
641 1.1 cgd oldintr = NULL;
642 1.1 cgd oldintp = NULL;
643 1.1 cgd lmode = "w";
644 1.81 lukem if (sigsetjmp(xferabort, 1)) {
645 1.85 lukem while (cpend)
646 1.23 lukem (void)getreply(0);
647 1.79 lukem code = -1;
648 1.30 lukem goto cleanupsend;
649 1.1 cgd }
650 1.80 lukem (void)xsignal(SIGQUIT, psummary);
651 1.81 lukem oldintr = xsignal(SIGINT, abortxfer);
652 1.23 lukem if (strcmp(local, "-") == 0) {
653 1.1 cgd fin = stdin;
654 1.23 lukem progress = 0;
655 1.23 lukem } else if (*local == '|') {
656 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
657 1.1 cgd fin = popen(local + 1, "r");
658 1.1 cgd if (fin == NULL) {
659 1.6 cgd warn("%s", local + 1);
660 1.79 lukem code = -1;
661 1.30 lukem goto cleanupsend;
662 1.1 cgd }
663 1.23 lukem progress = 0;
664 1.1 cgd closefunc = pclose;
665 1.1 cgd } else {
666 1.1 cgd fin = fopen(local, "r");
667 1.1 cgd if (fin == NULL) {
668 1.6 cgd warn("local: %s", local);
669 1.79 lukem code = -1;
670 1.30 lukem goto cleanupsend;
671 1.1 cgd }
672 1.1 cgd closefunc = fclose;
673 1.29 mycroft if (fstat(fileno(fin), &st) < 0 || !S_ISREG(st.st_mode)) {
674 1.35 lukem fprintf(ttyout, "%s: not a plain file.\n", local);
675 1.79 lukem code = -1;
676 1.30 lukem goto cleanupsend;
677 1.1 cgd }
678 1.16 lukem filesize = st.st_size;
679 1.1 cgd }
680 1.1 cgd if (initconn()) {
681 1.79 lukem code = -1;
682 1.30 lukem goto cleanupsend;
683 1.1 cgd }
684 1.81 lukem if (sigsetjmp(xferabort, 1))
685 1.1 cgd goto abort;
686 1.1 cgd
687 1.1 cgd if (restart_point &&
688 1.1 cgd (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
689 1.6 cgd int rc;
690 1.6 cgd
691 1.21 lukem rc = -1;
692 1.6 cgd switch (curtype) {
693 1.6 cgd case TYPE_A:
694 1.115 lukem rc = fseeko(fin, restart_point, SEEK_SET);
695 1.6 cgd break;
696 1.6 cgd case TYPE_I:
697 1.6 cgd case TYPE_L:
698 1.6 cgd rc = lseek(fileno(fin), restart_point, SEEK_SET);
699 1.6 cgd break;
700 1.6 cgd }
701 1.6 cgd if (rc < 0) {
702 1.6 cgd warn("local: %s", local);
703 1.30 lukem goto cleanupsend;
704 1.1 cgd }
705 1.107 lukem if (command("REST " LLF, (LLT)restart_point) != CONTINUE)
706 1.30 lukem goto cleanupsend;
707 1.119 lukem lmode = "r+";
708 1.1 cgd }
709 1.1 cgd if (remote) {
710 1.85 lukem if (command("%s %s", cmd, remote) != PRELIM)
711 1.30 lukem goto cleanupsend;
712 1.85 lukem } else {
713 1.85 lukem if (command("%s", cmd) != PRELIM)
714 1.30 lukem goto cleanupsend;
715 1.85 lukem }
716 1.121 lukem dirchange = 1;
717 1.1 cgd dout = dataconn(lmode);
718 1.1 cgd if (dout == NULL)
719 1.1 cgd goto abort;
720 1.64 lukem
721 1.64 lukem if (sndbuf_size > bufsize) {
722 1.64 lukem if (buf)
723 1.64 lukem (void)free(buf);
724 1.64 lukem bufsize = sndbuf_size;
725 1.136 christos buf = ftp_malloc(bufsize);
726 1.64 lukem }
727 1.64 lukem
728 1.16 lukem progressmeter(-1);
729 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
730 1.64 lukem
731 1.1 cgd switch (curtype) {
732 1.1 cgd
733 1.1 cgd case TYPE_I:
734 1.1 cgd case TYPE_L:
735 1.89 lukem if (rate_put) { /* rate limited */
736 1.89 lukem while (1) {
737 1.89 lukem struct timeval then, now, td;
738 1.89 lukem off_t bufrem;
739 1.46 lukem
740 1.62 lukem (void)gettimeofday(&then, NULL);
741 1.89 lukem errno = c = d = 0;
742 1.89 lukem bufrem = rate_put;
743 1.89 lukem while (bufrem > 0) {
744 1.89 lukem if ((c = read(fileno(fin), buf,
745 1.89 lukem MIN(bufsize, bufrem))) <= 0)
746 1.89 lukem goto senddone;
747 1.89 lukem bytes += c;
748 1.89 lukem bufrem -= c;
749 1.89 lukem for (bufp = buf; c > 0;
750 1.89 lukem c -= d, bufp += d)
751 1.89 lukem if ((d = write(fileno(dout),
752 1.89 lukem bufp, c)) <= 0)
753 1.89 lukem break;
754 1.89 lukem if (d < 0)
755 1.89 lukem goto senddone;
756 1.89 lukem if (hash &&
757 1.89 lukem (!progress || filesize < 0) ) {
758 1.89 lukem while (bytes >= hashbytes) {
759 1.89 lukem (void)putc('#', ttyout);
760 1.89 lukem hashbytes += mark;
761 1.89 lukem }
762 1.89 lukem (void)fflush(ttyout);
763 1.89 lukem }
764 1.89 lukem }
765 1.89 lukem while (1) {
766 1.89 lukem (void)gettimeofday(&now, NULL);
767 1.89 lukem timersub(&now, &then, &td);
768 1.89 lukem if (td.tv_sec > 0)
769 1.89 lukem break;
770 1.89 lukem usleep(1000000 - td.tv_usec);
771 1.89 lukem }
772 1.89 lukem }
773 1.102 lukem } else { /* simpler/faster; no rate limit */
774 1.89 lukem while (1) {
775 1.89 lukem errno = c = d = 0;
776 1.89 lukem if ((c = read(fileno(fin), buf, bufsize)) <= 0)
777 1.46 lukem goto senddone;
778 1.46 lukem bytes += c;
779 1.46 lukem for (bufp = buf; c > 0; c -= d, bufp += d)
780 1.46 lukem if ((d = write(fileno(dout), bufp, c))
781 1.46 lukem <= 0)
782 1.46 lukem break;
783 1.46 lukem if (d < 0)
784 1.46 lukem goto senddone;
785 1.46 lukem if (hash && (!progress || filesize < 0) ) {
786 1.46 lukem while (bytes >= hashbytes) {
787 1.46 lukem (void)putc('#', ttyout);
788 1.46 lukem hashbytes += mark;
789 1.46 lukem }
790 1.46 lukem (void)fflush(ttyout);
791 1.46 lukem }
792 1.46 lukem }
793 1.1 cgd }
794 1.46 lukem senddone:
795 1.22 lukem if (hash && (!progress || filesize < 0) && bytes > 0) {
796 1.14 lukem if (bytes < mark)
797 1.35 lukem (void)putc('#', ttyout);
798 1.35 lukem (void)putc('\n', ttyout);
799 1.1 cgd }
800 1.1 cgd if (c < 0)
801 1.6 cgd warn("local: %s", local);
802 1.1 cgd if (d < 0) {
803 1.14 lukem if (errno != EPIPE)
804 1.6 cgd warn("netout");
805 1.1 cgd bytes = -1;
806 1.1 cgd }
807 1.1 cgd break;
808 1.1 cgd
809 1.1 cgd case TYPE_A:
810 1.1 cgd while ((c = getc(fin)) != EOF) {
811 1.1 cgd if (c == '\n') {
812 1.22 lukem while (hash && (!progress || filesize < 0) &&
813 1.16 lukem (bytes >= hashbytes)) {
814 1.35 lukem (void)putc('#', ttyout);
815 1.35 lukem (void)fflush(ttyout);
816 1.14 lukem hashbytes += mark;
817 1.1 cgd }
818 1.1 cgd if (ferror(dout))
819 1.1 cgd break;
820 1.23 lukem (void)putc('\r', dout);
821 1.1 cgd bytes++;
822 1.1 cgd }
823 1.23 lukem (void)putc(c, dout);
824 1.1 cgd bytes++;
825 1.16 lukem #if 0 /* this violates RFC */
826 1.16 lukem if (c == '\r') {
827 1.16 lukem (void)putc('\0', dout);
828 1.16 lukem bytes++;
829 1.16 lukem }
830 1.16 lukem #endif
831 1.1 cgd }
832 1.22 lukem if (hash && (!progress || filesize < 0)) {
833 1.1 cgd if (bytes < hashbytes)
834 1.35 lukem (void)putc('#', ttyout);
835 1.35 lukem (void)putc('\n', ttyout);
836 1.1 cgd }
837 1.1 cgd if (ferror(fin))
838 1.6 cgd warn("local: %s", local);
839 1.1 cgd if (ferror(dout)) {
840 1.1 cgd if (errno != EPIPE)
841 1.6 cgd warn("netout");
842 1.1 cgd bytes = -1;
843 1.1 cgd }
844 1.1 cgd break;
845 1.1 cgd }
846 1.78 lukem
847 1.22 lukem progressmeter(1);
848 1.78 lukem if (closefunc != NULL) {
849 1.1 cgd (*closefunc)(fin);
850 1.78 lukem fin = NULL;
851 1.78 lukem }
852 1.79 lukem (void)fclose(dout);
853 1.79 lukem dout = NULL;
854 1.23 lukem (void)getreply(0);
855 1.1 cgd if (bytes > 0)
856 1.16 lukem ptransfer(0);
857 1.30 lukem goto cleanupsend;
858 1.78 lukem
859 1.102 lukem abort:
860 1.80 lukem (void)xsignal(SIGINT, oldintr);
861 1.80 lukem oldintr = NULL;
862 1.78 lukem if (!cpend) {
863 1.79 lukem code = -1;
864 1.78 lukem goto cleanupsend;
865 1.78 lukem }
866 1.80 lukem if (data >= 0) {
867 1.80 lukem (void)close(data);
868 1.80 lukem data = -1;
869 1.80 lukem }
870 1.80 lukem if (dout) {
871 1.80 lukem (void)fclose(dout);
872 1.80 lukem dout = NULL;
873 1.80 lukem }
874 1.78 lukem (void)getreply(0);
875 1.79 lukem code = -1;
876 1.78 lukem if (bytes > 0)
877 1.78 lukem ptransfer(0);
878 1.78 lukem
879 1.102 lukem cleanupsend:
880 1.81 lukem if (oldintr)
881 1.81 lukem (void)xsignal(SIGINT, oldintr);
882 1.81 lukem if (oldintp)
883 1.81 lukem (void)xsignal(SIGPIPE, oldintp);
884 1.80 lukem if (data >= 0) {
885 1.80 lukem (void)close(data);
886 1.80 lukem data = -1;
887 1.80 lukem }
888 1.78 lukem if (closefunc != NULL && fin != NULL)
889 1.78 lukem (*closefunc)(fin);
890 1.78 lukem if (dout)
891 1.78 lukem (void)fclose(dout);
892 1.30 lukem progress = oprogress;
893 1.30 lukem restart_point = 0;
894 1.78 lukem bytes = 0;
895 1.1 cgd }
896 1.1 cgd
897 1.6 cgd void
898 1.95 lukem recvrequest(const char *cmd, const char *local, const char *remote,
899 1.95 lukem const char *lmode, int printnames, int ignorespecial)
900 1.1 cgd {
901 1.26 lukem FILE *fout, *din;
902 1.95 lukem int (*closefunc)(FILE *);
903 1.90 lukem sigfunc oldintr, oldintp;
904 1.26 lukem int c, d;
905 1.26 lukem volatile int is_retr, tcrflag, bare_lfs;
906 1.47 lukem static size_t bufsize;
907 1.47 lukem static char *buf;
908 1.26 lukem volatile off_t hashbytes;
909 1.1 cgd struct stat st;
910 1.15 lukem time_t mtime;
911 1.16 lukem struct timeval tval[2];
912 1.23 lukem int oprogress;
913 1.24 lukem int opreserve;
914 1.1 cgd
915 1.35 lukem #ifdef __GNUC__ /* to shut up gcc warnings */
916 1.26 lukem (void)&local;
917 1.26 lukem (void)&fout;
918 1.26 lukem (void)&din;
919 1.26 lukem (void)&closefunc;
920 1.26 lukem (void)&oldintr;
921 1.26 lukem (void)&oldintp;
922 1.26 lukem #endif
923 1.26 lukem
924 1.26 lukem fout = NULL;
925 1.26 lukem din = NULL;
926 1.16 lukem hashbytes = mark;
927 1.14 lukem direction = "received";
928 1.14 lukem bytes = 0;
929 1.26 lukem bare_lfs = 0;
930 1.16 lukem filesize = -1;
931 1.23 lukem oprogress = progress;
932 1.24 lukem opreserve = preserve;
933 1.30 lukem is_retr = (strcmp(cmd, "RETR") == 0);
934 1.1 cgd if (is_retr && verbose && printnames) {
935 1.139 christos if (ignorespecial || *local != '-')
936 1.35 lukem fprintf(ttyout, "local: %s ", local);
937 1.1 cgd if (remote)
938 1.35 lukem fprintf(ttyout, "remote: %s\n", remote);
939 1.1 cgd }
940 1.1 cgd if (proxy && is_retr) {
941 1.1 cgd proxtrans(cmd, local, remote);
942 1.1 cgd return;
943 1.1 cgd }
944 1.1 cgd closefunc = NULL;
945 1.1 cgd oldintr = NULL;
946 1.1 cgd oldintp = NULL;
947 1.1 cgd tcrflag = !crflag && is_retr;
948 1.81 lukem if (sigsetjmp(xferabort, 1)) {
949 1.85 lukem while (cpend)
950 1.23 lukem (void)getreply(0);
951 1.79 lukem code = -1;
952 1.78 lukem goto cleanuprecv;
953 1.1 cgd }
954 1.80 lukem (void)xsignal(SIGQUIT, psummary);
955 1.81 lukem oldintr = xsignal(SIGINT, abortxfer);
956 1.27 lukem if (ignorespecial || (strcmp(local, "-") && *local != '|')) {
957 1.28 lukem if (access(local, W_OK) < 0) {
958 1.6 cgd char *dir = strrchr(local, '/');
959 1.1 cgd
960 1.1 cgd if (errno != ENOENT && errno != EACCES) {
961 1.6 cgd warn("local: %s", local);
962 1.79 lukem code = -1;
963 1.78 lukem goto cleanuprecv;
964 1.1 cgd }
965 1.1 cgd if (dir != NULL)
966 1.1 cgd *dir = 0;
967 1.46 lukem d = access(dir == local ? "/" :
968 1.46 lukem dir ? local : ".", W_OK);
969 1.1 cgd if (dir != NULL)
970 1.1 cgd *dir = '/';
971 1.1 cgd if (d < 0) {
972 1.6 cgd warn("local: %s", local);
973 1.79 lukem code = -1;
974 1.78 lukem goto cleanuprecv;
975 1.1 cgd }
976 1.1 cgd if (!runique && errno == EACCES &&
977 1.35 lukem chmod(local, (S_IRUSR|S_IWUSR)) < 0) {
978 1.6 cgd warn("local: %s", local);
979 1.79 lukem code = -1;
980 1.78 lukem goto cleanuprecv;
981 1.1 cgd }
982 1.1 cgd if (runique && errno == EACCES &&
983 1.1 cgd (local = gunique(local)) == NULL) {
984 1.79 lukem code = -1;
985 1.78 lukem goto cleanuprecv;
986 1.1 cgd }
987 1.1 cgd }
988 1.1 cgd else if (runique && (local = gunique(local)) == NULL) {
989 1.79 lukem code = -1;
990 1.78 lukem goto cleanuprecv;
991 1.1 cgd }
992 1.1 cgd }
993 1.1 cgd if (!is_retr) {
994 1.1 cgd if (curtype != TYPE_A)
995 1.1 cgd changetype(TYPE_A, 0);
996 1.16 lukem } else {
997 1.16 lukem if (curtype != type)
998 1.16 lukem changetype(type, 0);
999 1.19 lukem filesize = remotesize(remote, 0);
1000 1.85 lukem if (code == 421 || code == -1)
1001 1.85 lukem goto cleanuprecv;
1002 1.16 lukem }
1003 1.1 cgd if (initconn()) {
1004 1.79 lukem code = -1;
1005 1.78 lukem goto cleanuprecv;
1006 1.1 cgd }
1007 1.81 lukem if (sigsetjmp(xferabort, 1))
1008 1.1 cgd goto abort;
1009 1.1 cgd if (is_retr && restart_point &&
1010 1.107 lukem command("REST " LLF, (LLT) restart_point) != CONTINUE)
1011 1.78 lukem goto cleanuprecv;
1012 1.88 lukem if (! EMPTYSTRING(remote)) {
1013 1.85 lukem if (command("%s %s", cmd, remote) != PRELIM)
1014 1.78 lukem goto cleanuprecv;
1015 1.1 cgd } else {
1016 1.85 lukem if (command("%s", cmd) != PRELIM)
1017 1.78 lukem goto cleanuprecv;
1018 1.1 cgd }
1019 1.1 cgd din = dataconn("r");
1020 1.1 cgd if (din == NULL)
1021 1.1 cgd goto abort;
1022 1.27 lukem if (!ignorespecial && strcmp(local, "-") == 0) {
1023 1.1 cgd fout = stdout;
1024 1.23 lukem progress = 0;
1025 1.24 lukem preserve = 0;
1026 1.27 lukem } else if (!ignorespecial && *local == '|') {
1027 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
1028 1.1 cgd fout = popen(local + 1, "w");
1029 1.1 cgd if (fout == NULL) {
1030 1.6 cgd warn("%s", local+1);
1031 1.1 cgd goto abort;
1032 1.1 cgd }
1033 1.23 lukem progress = 0;
1034 1.24 lukem preserve = 0;
1035 1.1 cgd closefunc = pclose;
1036 1.1 cgd } else {
1037 1.1 cgd fout = fopen(local, lmode);
1038 1.1 cgd if (fout == NULL) {
1039 1.6 cgd warn("local: %s", local);
1040 1.1 cgd goto abort;
1041 1.1 cgd }
1042 1.1 cgd closefunc = fclose;
1043 1.1 cgd }
1044 1.46 lukem
1045 1.64 lukem if (fstat(fileno(fout), &st) != -1 && !S_ISREG(st.st_mode)) {
1046 1.64 lukem progress = 0;
1047 1.64 lukem preserve = 0;
1048 1.64 lukem }
1049 1.64 lukem if (rcvbuf_size > bufsize) {
1050 1.1 cgd if (buf)
1051 1.23 lukem (void)free(buf);
1052 1.64 lukem bufsize = rcvbuf_size;
1053 1.136 christos buf = ftp_malloc(bufsize);
1054 1.1 cgd }
1055 1.64 lukem
1056 1.16 lukem progressmeter(-1);
1057 1.64 lukem
1058 1.1 cgd switch (curtype) {
1059 1.1 cgd
1060 1.1 cgd case TYPE_I:
1061 1.1 cgd case TYPE_L:
1062 1.30 lukem if (is_retr && restart_point &&
1063 1.6 cgd lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
1064 1.6 cgd warn("local: %s", local);
1065 1.78 lukem goto cleanuprecv;
1066 1.1 cgd }
1067 1.89 lukem if (rate_get) { /* rate limiting */
1068 1.89 lukem while (1) {
1069 1.89 lukem struct timeval then, now, td;
1070 1.89 lukem off_t bufrem;
1071 1.46 lukem
1072 1.62 lukem (void)gettimeofday(&then, NULL);
1073 1.89 lukem errno = c = d = 0;
1074 1.89 lukem for (bufrem = rate_get; bufrem > 0; ) {
1075 1.89 lukem if ((c = read(fileno(din), buf,
1076 1.89 lukem MIN(bufsize, bufrem))) <= 0)
1077 1.89 lukem goto recvdone;
1078 1.89 lukem bytes += c;
1079 1.89 lukem bufrem -=c;
1080 1.89 lukem if ((d = write(fileno(fout), buf, c))
1081 1.89 lukem != c)
1082 1.89 lukem goto recvdone;
1083 1.89 lukem if (hash &&
1084 1.89 lukem (!progress || filesize < 0)) {
1085 1.89 lukem while (bytes >= hashbytes) {
1086 1.89 lukem (void)putc('#', ttyout);
1087 1.89 lukem hashbytes += mark;
1088 1.89 lukem }
1089 1.89 lukem (void)fflush(ttyout);
1090 1.89 lukem }
1091 1.89 lukem }
1092 1.89 lukem /* sleep until time is up */
1093 1.89 lukem while (1) {
1094 1.89 lukem (void)gettimeofday(&now, NULL);
1095 1.89 lukem timersub(&now, &then, &td);
1096 1.89 lukem if (td.tv_sec > 0)
1097 1.89 lukem break;
1098 1.89 lukem usleep(1000000 - td.tv_usec);
1099 1.89 lukem }
1100 1.89 lukem }
1101 1.89 lukem } else { /* faster code (no limiting) */
1102 1.89 lukem while (1) {
1103 1.89 lukem errno = c = d = 0;
1104 1.89 lukem if ((c = read(fileno(din), buf, bufsize)) <= 0)
1105 1.46 lukem goto recvdone;
1106 1.46 lukem bytes += c;
1107 1.46 lukem if ((d = write(fileno(fout), buf, c)) != c)
1108 1.46 lukem goto recvdone;
1109 1.46 lukem if (hash && (!progress || filesize < 0)) {
1110 1.46 lukem while (bytes >= hashbytes) {
1111 1.46 lukem (void)putc('#', ttyout);
1112 1.46 lukem hashbytes += mark;
1113 1.46 lukem }
1114 1.46 lukem (void)fflush(ttyout);
1115 1.1 cgd }
1116 1.1 cgd }
1117 1.1 cgd }
1118 1.46 lukem recvdone:
1119 1.22 lukem if (hash && (!progress || filesize < 0) && bytes > 0) {
1120 1.14 lukem if (bytes < mark)
1121 1.35 lukem (void)putc('#', ttyout);
1122 1.35 lukem (void)putc('\n', ttyout);
1123 1.1 cgd }
1124 1.1 cgd if (c < 0) {
1125 1.1 cgd if (errno != EPIPE)
1126 1.6 cgd warn("netin");
1127 1.1 cgd bytes = -1;
1128 1.1 cgd }
1129 1.1 cgd if (d < c) {
1130 1.1 cgd if (d < 0)
1131 1.6 cgd warn("local: %s", local);
1132 1.1 cgd else
1133 1.6 cgd warnx("%s: short write", local);
1134 1.1 cgd }
1135 1.1 cgd break;
1136 1.1 cgd
1137 1.1 cgd case TYPE_A:
1138 1.30 lukem if (is_retr && restart_point) {
1139 1.30 lukem int ch;
1140 1.115 lukem off_t i;
1141 1.1 cgd
1142 1.115 lukem if (fseeko(fout, (off_t)0, SEEK_SET) < 0)
1143 1.1 cgd goto done;
1144 1.115 lukem for (i = 0; i++ < restart_point;) {
1145 1.1 cgd if ((ch = getc(fout)) == EOF)
1146 1.1 cgd goto done;
1147 1.1 cgd if (ch == '\n')
1148 1.1 cgd i++;
1149 1.1 cgd }
1150 1.115 lukem if (fseeko(fout, (off_t)0, SEEK_CUR) < 0) {
1151 1.102 lukem done:
1152 1.6 cgd warn("local: %s", local);
1153 1.78 lukem goto cleanuprecv;
1154 1.1 cgd }
1155 1.1 cgd }
1156 1.1 cgd while ((c = getc(din)) != EOF) {
1157 1.1 cgd if (c == '\n')
1158 1.1 cgd bare_lfs++;
1159 1.1 cgd while (c == '\r') {
1160 1.22 lukem while (hash && (!progress || filesize < 0) &&
1161 1.16 lukem (bytes >= hashbytes)) {
1162 1.35 lukem (void)putc('#', ttyout);
1163 1.35 lukem (void)fflush(ttyout);
1164 1.14 lukem hashbytes += mark;
1165 1.1 cgd }
1166 1.1 cgd bytes++;
1167 1.1 cgd if ((c = getc(din)) != '\n' || tcrflag) {
1168 1.1 cgd if (ferror(fout))
1169 1.1 cgd goto break2;
1170 1.23 lukem (void)putc('\r', fout);
1171 1.1 cgd if (c == '\0') {
1172 1.1 cgd bytes++;
1173 1.1 cgd goto contin2;
1174 1.1 cgd }
1175 1.1 cgd if (c == EOF)
1176 1.1 cgd goto contin2;
1177 1.1 cgd }
1178 1.1 cgd }
1179 1.23 lukem (void)putc(c, fout);
1180 1.1 cgd bytes++;
1181 1.1 cgd contin2: ;
1182 1.1 cgd }
1183 1.114 lukem break2:
1184 1.22 lukem if (hash && (!progress || filesize < 0)) {
1185 1.1 cgd if (bytes < hashbytes)
1186 1.35 lukem (void)putc('#', ttyout);
1187 1.35 lukem (void)putc('\n', ttyout);
1188 1.1 cgd }
1189 1.1 cgd if (ferror(din)) {
1190 1.1 cgd if (errno != EPIPE)
1191 1.6 cgd warn("netin");
1192 1.1 cgd bytes = -1;
1193 1.1 cgd }
1194 1.1 cgd if (ferror(fout))
1195 1.6 cgd warn("local: %s", local);
1196 1.1 cgd break;
1197 1.1 cgd }
1198 1.78 lukem
1199 1.22 lukem progressmeter(1);
1200 1.78 lukem if (closefunc != NULL) {
1201 1.1 cgd (*closefunc)(fout);
1202 1.78 lukem fout = NULL;
1203 1.78 lukem }
1204 1.79 lukem (void)fclose(din);
1205 1.79 lukem din = NULL;
1206 1.23 lukem (void)getreply(0);
1207 1.43 lukem if (bare_lfs) {
1208 1.43 lukem fprintf(ttyout,
1209 1.43 lukem "WARNING! %d bare linefeeds received in ASCII mode.\n",
1210 1.43 lukem bare_lfs);
1211 1.43 lukem fputs("File may not have transferred correctly.\n", ttyout);
1212 1.43 lukem }
1213 1.19 lukem if (bytes >= 0 && is_retr) {
1214 1.19 lukem if (bytes > 0)
1215 1.19 lukem ptransfer(0);
1216 1.15 lukem if (preserve && (closefunc == fclose)) {
1217 1.19 lukem mtime = remotemodtime(remote, 0);
1218 1.15 lukem if (mtime != -1) {
1219 1.31 lukem (void)gettimeofday(&tval[0], NULL);
1220 1.16 lukem tval[1].tv_sec = mtime;
1221 1.16 lukem tval[1].tv_usec = 0;
1222 1.16 lukem if (utimes(local, tval) == -1) {
1223 1.35 lukem fprintf(ttyout,
1224 1.23 lukem "Can't change modification time on %s to %s",
1225 1.23 lukem local, asctime(localtime(&mtime)));
1226 1.15 lukem }
1227 1.15 lukem }
1228 1.15 lukem }
1229 1.15 lukem }
1230 1.78 lukem goto cleanuprecv;
1231 1.23 lukem
1232 1.102 lukem abort:
1233 1.78 lukem /*
1234 1.78 lukem * abort using RFC 959 recommended IP,SYNC sequence
1235 1.78 lukem */
1236 1.82 lukem if (! sigsetjmp(xferabort, 1)) {
1237 1.82 lukem /* this is the first call */
1238 1.82 lukem (void)xsignal(SIGINT, abort_squared);
1239 1.82 lukem if (!cpend) {
1240 1.82 lukem code = -1;
1241 1.82 lukem goto cleanuprecv;
1242 1.82 lukem }
1243 1.82 lukem abort_remote(din);
1244 1.78 lukem }
1245 1.80 lukem code = -1;
1246 1.78 lukem if (bytes > 0)
1247 1.78 lukem ptransfer(0);
1248 1.1 cgd
1249 1.102 lukem cleanuprecv:
1250 1.81 lukem if (oldintr)
1251 1.81 lukem (void)xsignal(SIGINT, oldintr);
1252 1.81 lukem if (oldintp)
1253 1.81 lukem (void)xsignal(SIGPIPE, oldintp);
1254 1.80 lukem if (data >= 0) {
1255 1.80 lukem (void)close(data);
1256 1.80 lukem data = -1;
1257 1.80 lukem }
1258 1.78 lukem if (closefunc != NULL && fout != NULL)
1259 1.78 lukem (*closefunc)(fout);
1260 1.78 lukem if (din)
1261 1.78 lukem (void)fclose(din);
1262 1.78 lukem progress = oprogress;
1263 1.78 lukem preserve = opreserve;
1264 1.78 lukem bytes = 0;
1265 1.1 cgd }
1266 1.1 cgd
1267 1.1 cgd /*
1268 1.1 cgd * Need to start a listen on the data channel before we send the command,
1269 1.1 cgd * otherwise the server's connect may fail.
1270 1.1 cgd */
1271 1.6 cgd int
1272 1.95 lukem initconn(void)
1273 1.1 cgd {
1274 1.6 cgd char *p, *a;
1275 1.132 lukem int result, tmpno = 0;
1276 1.1 cgd int on = 1;
1277 1.48 itojun int error;
1278 1.133 lukem unsigned int addr[16], port[2];
1279 1.133 lukem unsigned int af, hal, pal;
1280 1.132 lukem socklen_t len;
1281 1.48 itojun char *pasvcmd = NULL;
1282 1.8 cgd
1283 1.62 lukem #ifdef INET6
1284 1.135 christos #ifndef NO_DEBUG
1285 1.137 christos if (myctladdr.su_family == AF_INET6 && ftp_debug &&
1286 1.104 lukem (IN6_IS_ADDR_LINKLOCAL(&myctladdr.si_su.su_sin6.sin6_addr) ||
1287 1.104 lukem IN6_IS_ADDR_SITELOCAL(&myctladdr.si_su.su_sin6.sin6_addr))) {
1288 1.59 itojun warnx("use of scoped address can be troublesome");
1289 1.59 itojun }
1290 1.62 lukem #endif
1291 1.135 christos #endif
1292 1.102 lukem reinit:
1293 1.8 cgd if (passivemode) {
1294 1.48 itojun data_addr = myctladdr;
1295 1.48 itojun data = socket(data_addr.su_family, SOCK_STREAM, 0);
1296 1.8 cgd if (data < 0) {
1297 1.19 lukem warn("socket");
1298 1.21 lukem return (1);
1299 1.8 cgd }
1300 1.8 cgd if ((options & SO_DEBUG) &&
1301 1.130 lukem setsockopt(data, SOL_SOCKET, SO_DEBUG,
1302 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1303 1.135 christos DWARN("setsockopt %s (ignored)", "SO_DEBUG");
1304 1.130 lukem }
1305 1.54 itojun result = COMPLETE + 1;
1306 1.48 itojun switch (data_addr.su_family) {
1307 1.48 itojun case AF_INET:
1308 1.74 lukem if (epsv4 && !epsv4bad) {
1309 1.128 lukem pasvcmd = "EPSV";
1310 1.110 is result = command("EPSV");
1311 1.85 lukem if (!connected)
1312 1.85 lukem return (1);
1313 1.55 itojun /*
1314 1.55 itojun * this code is to be friendly with broken
1315 1.55 itojun * BSDI ftpd
1316 1.55 itojun */
1317 1.56 itojun if (code / 10 == 22 && code != 229) {
1318 1.55 itojun fputs(
1319 1.55 itojun "wrong server: return code must be 229\n",
1320 1.55 itojun ttyout);
1321 1.55 itojun result = COMPLETE + 1;
1322 1.55 itojun }
1323 1.74 lukem if (result != COMPLETE) {
1324 1.74 lukem epsv4bad = 1;
1325 1.135 christos DPRINTF("disabling epsv4 for this "
1326 1.135 christos "connection\n");
1327 1.74 lukem }
1328 1.55 itojun }
1329 1.85 lukem if (result != COMPLETE) {
1330 1.128 lukem pasvcmd = "PASV";
1331 1.110 is result = command("PASV");
1332 1.85 lukem if (!connected)
1333 1.85 lukem return (1);
1334 1.85 lukem }
1335 1.48 itojun break;
1336 1.62 lukem #ifdef INET6
1337 1.48 itojun case AF_INET6:
1338 1.128 lukem pasvcmd = "EPSV";
1339 1.110 is result = command("EPSV");
1340 1.85 lukem if (!connected)
1341 1.85 lukem return (1);
1342 1.55 itojun /* this code is to be friendly with broken BSDI ftpd */
1343 1.56 itojun if (code / 10 == 22 && code != 229) {
1344 1.55 itojun fputs(
1345 1.55 itojun "wrong server: return code must be 229\n",
1346 1.55 itojun ttyout);
1347 1.55 itojun result = COMPLETE + 1;
1348 1.55 itojun }
1349 1.110 is if (result != COMPLETE) {
1350 1.110 is pasvcmd = "LPSV";
1351 1.110 is result = command("LPSV");
1352 1.110 is }
1353 1.85 lukem if (!connected)
1354 1.85 lukem return (1);
1355 1.48 itojun break;
1356 1.62 lukem #endif
1357 1.48 itojun default:
1358 1.57 itojun result = COMPLETE + 1;
1359 1.54 itojun break;
1360 1.48 itojun }
1361 1.48 itojun if (result != COMPLETE) {
1362 1.35 lukem if (activefallback) {
1363 1.35 lukem (void)close(data);
1364 1.35 lukem data = -1;
1365 1.35 lukem passivemode = 0;
1366 1.85 lukem #if 0
1367 1.35 lukem activefallback = 0;
1368 1.85 lukem #endif
1369 1.35 lukem goto reinit;
1370 1.35 lukem }
1371 1.35 lukem fputs("Passive mode refused.\n", ttyout);
1372 1.8 cgd goto bad;
1373 1.8 cgd }
1374 1.8 cgd
1375 1.85 lukem #define pack2(var, off) \
1376 1.48 itojun (((var[(off) + 0] & 0xff) << 8) | ((var[(off) + 1] & 0xff) << 0))
1377 1.85 lukem #define pack4(var, off) \
1378 1.48 itojun (((var[(off) + 0] & 0xff) << 24) | ((var[(off) + 1] & 0xff) << 16) | \
1379 1.48 itojun ((var[(off) + 2] & 0xff) << 8) | ((var[(off) + 3] & 0xff) << 0))
1380 1.100 lukem #define UC(b) (((int)b)&0xff)
1381 1.48 itojun
1382 1.8 cgd /*
1383 1.48 itojun * What we've got at this point is a string of comma separated
1384 1.48 itojun * one-byte unsigned integer values, separated by commas.
1385 1.8 cgd */
1386 1.55 itojun if (strcmp(pasvcmd, "PASV") == 0) {
1387 1.55 itojun if (data_addr.su_family != AF_INET) {
1388 1.55 itojun fputs(
1389 1.105 lukem "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1390 1.55 itojun error = 1;
1391 1.55 itojun goto bad;
1392 1.55 itojun }
1393 1.56 itojun if (code / 10 == 22 && code != 227) {
1394 1.55 itojun fputs("wrong server: return code must be 227\n",
1395 1.55 itojun ttyout);
1396 1.55 itojun error = 1;
1397 1.55 itojun goto bad;
1398 1.55 itojun }
1399 1.55 itojun error = sscanf(pasv, "%u,%u,%u,%u,%u,%u",
1400 1.55 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1401 1.55 itojun &port[0], &port[1]);
1402 1.55 itojun if (error != 6) {
1403 1.55 itojun fputs(
1404 1.55 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1405 1.55 itojun error = 1;
1406 1.55 itojun goto bad;
1407 1.55 itojun }
1408 1.55 itojun error = 0;
1409 1.55 itojun memset(&data_addr, 0, sizeof(data_addr));
1410 1.55 itojun data_addr.su_family = AF_INET;
1411 1.55 itojun data_addr.su_len = sizeof(struct sockaddr_in);
1412 1.104 lukem data_addr.si_su.su_sin.sin_addr.s_addr =
1413 1.104 lukem htonl(pack4(addr, 0));
1414 1.55 itojun data_addr.su_port = htons(pack2(port, 0));
1415 1.55 itojun } else if (strcmp(pasvcmd, "LPSV") == 0) {
1416 1.56 itojun if (code / 10 == 22 && code != 228) {
1417 1.55 itojun fputs("wrong server: return code must be 228\n",
1418 1.55 itojun ttyout);
1419 1.55 itojun error = 1;
1420 1.55 itojun goto bad;
1421 1.55 itojun }
1422 1.48 itojun switch (data_addr.su_family) {
1423 1.48 itojun case AF_INET:
1424 1.55 itojun error = sscanf(pasv,
1425 1.55 itojun "%u,%u,%u,%u,%u,%u,%u,%u,%u",
1426 1.57 itojun &af, &hal,
1427 1.55 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1428 1.55 itojun &pal, &port[0], &port[1]);
1429 1.57 itojun if (error != 9) {
1430 1.55 itojun fputs(
1431 1.57 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1432 1.55 itojun error = 1;
1433 1.55 itojun goto bad;
1434 1.55 itojun }
1435 1.57 itojun if (af != 4 || hal != 4 || pal != 2) {
1436 1.48 itojun fputs(
1437 1.57 itojun "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1438 1.48 itojun error = 1;
1439 1.48 itojun goto bad;
1440 1.48 itojun }
1441 1.57 itojun
1442 1.48 itojun error = 0;
1443 1.48 itojun memset(&data_addr, 0, sizeof(data_addr));
1444 1.48 itojun data_addr.su_family = AF_INET;
1445 1.48 itojun data_addr.su_len = sizeof(struct sockaddr_in);
1446 1.104 lukem data_addr.si_su.su_sin.sin_addr.s_addr =
1447 1.104 lukem htonl(pack4(addr, 0));
1448 1.48 itojun data_addr.su_port = htons(pack2(port, 0));
1449 1.48 itojun break;
1450 1.62 lukem #ifdef INET6
1451 1.48 itojun case AF_INET6:
1452 1.48 itojun error = sscanf(pasv,
1453 1.48 itojun "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u",
1454 1.48 itojun &af, &hal,
1455 1.48 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1456 1.48 itojun &addr[4], &addr[5], &addr[6], &addr[7],
1457 1.48 itojun &addr[8], &addr[9], &addr[10],
1458 1.48 itojun &addr[11], &addr[12], &addr[13],
1459 1.48 itojun &addr[14], &addr[15],
1460 1.48 itojun &pal, &port[0], &port[1]);
1461 1.57 itojun if (error != 21) {
1462 1.48 itojun fputs(
1463 1.57 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1464 1.48 itojun error = 1;
1465 1.48 itojun goto bad;
1466 1.48 itojun }
1467 1.57 itojun if (af != 6 || hal != 16 || pal != 2) {
1468 1.48 itojun fputs(
1469 1.57 itojun "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1470 1.48 itojun error = 1;
1471 1.48 itojun goto bad;
1472 1.48 itojun }
1473 1.8 cgd
1474 1.48 itojun error = 0;
1475 1.48 itojun memset(&data_addr, 0, sizeof(data_addr));
1476 1.48 itojun data_addr.su_family = AF_INET6;
1477 1.48 itojun data_addr.su_len = sizeof(struct sockaddr_in6);
1478 1.60 itojun {
1479 1.100 lukem int i;
1480 1.100 lukem for (i = 0; i < sizeof(struct in6_addr); i++) {
1481 1.104 lukem data_addr.si_su.su_sin6.sin6_addr.s6_addr[i] =
1482 1.100 lukem UC(addr[i]);
1483 1.100 lukem }
1484 1.60 itojun }
1485 1.48 itojun data_addr.su_port = htons(pack2(port, 0));
1486 1.48 itojun break;
1487 1.62 lukem #endif
1488 1.48 itojun default:
1489 1.48 itojun error = 1;
1490 1.48 itojun }
1491 1.48 itojun } else if (strcmp(pasvcmd, "EPSV") == 0) {
1492 1.48 itojun char delim[4];
1493 1.48 itojun
1494 1.48 itojun port[0] = 0;
1495 1.56 itojun if (code / 10 == 22 && code != 229) {
1496 1.55 itojun fputs("wrong server: return code must be 229\n",
1497 1.55 itojun ttyout);
1498 1.55 itojun error = 1;
1499 1.55 itojun goto bad;
1500 1.55 itojun }
1501 1.48 itojun if (sscanf(pasv, "%c%c%c%d%c", &delim[0],
1502 1.48 itojun &delim[1], &delim[2], &port[1],
1503 1.48 itojun &delim[3]) != 5) {
1504 1.57 itojun fputs("parse error!\n", ttyout);
1505 1.57 itojun error = 1;
1506 1.48 itojun goto bad;
1507 1.48 itojun }
1508 1.48 itojun if (delim[0] != delim[1] || delim[0] != delim[2]
1509 1.48 itojun || delim[0] != delim[3]) {
1510 1.57 itojun fputs("parse error!\n", ttyout);
1511 1.57 itojun error = 1;
1512 1.48 itojun goto bad;
1513 1.48 itojun }
1514 1.48 itojun data_addr = hisctladdr;
1515 1.48 itojun data_addr.su_port = htons(port[1]);
1516 1.48 itojun } else
1517 1.8 cgd goto bad;
1518 1.8 cgd
1519 1.136 christos while (ftp_connect(data, (struct sockaddr *)&data_addr.si_su,
1520 1.48 itojun data_addr.su_len) < 0) {
1521 1.39 lukem if (activefallback) {
1522 1.39 lukem (void)close(data);
1523 1.39 lukem data = -1;
1524 1.39 lukem passivemode = 0;
1525 1.85 lukem #if 0
1526 1.39 lukem activefallback = 0;
1527 1.85 lukem #endif
1528 1.39 lukem goto reinit;
1529 1.39 lukem }
1530 1.131 lukem warn("connect for data channel");
1531 1.8 cgd goto bad;
1532 1.8 cgd }
1533 1.92 lukem #ifdef IPTOS_THROUGHPUT
1534 1.48 itojun if (data_addr.su_family == AF_INET) {
1535 1.48 itojun on = IPTOS_THROUGHPUT;
1536 1.130 lukem if (setsockopt(data, IPPROTO_IP, IP_TOS,
1537 1.131 lukem (void *)&on, sizeof(on)) == -1) {
1538 1.135 christos DWARN("setsockopt %s (ignored)",
1539 1.135 christos "IPTOS_THROUGHPUT");
1540 1.130 lukem }
1541 1.48 itojun }
1542 1.92 lukem #endif
1543 1.21 lukem return (0);
1544 1.8 cgd }
1545 1.1 cgd
1546 1.102 lukem noport:
1547 1.1 cgd data_addr = myctladdr;
1548 1.1 cgd if (sendport)
1549 1.48 itojun data_addr.su_port = 0; /* let system pick one */
1550 1.1 cgd if (data != -1)
1551 1.23 lukem (void)close(data);
1552 1.48 itojun data = socket(data_addr.su_family, SOCK_STREAM, 0);
1553 1.1 cgd if (data < 0) {
1554 1.6 cgd warn("socket");
1555 1.1 cgd if (tmpno)
1556 1.1 cgd sendport = 1;
1557 1.1 cgd return (1);
1558 1.1 cgd }
1559 1.1 cgd if (!sendport)
1560 1.130 lukem if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR,
1561 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1562 1.130 lukem warn("setsockopt %s", "SO_REUSEADDR");
1563 1.1 cgd goto bad;
1564 1.1 cgd }
1565 1.104 lukem if (bind(data, (struct sockaddr *)&data_addr.si_su,
1566 1.104 lukem data_addr.su_len) < 0) {
1567 1.6 cgd warn("bind");
1568 1.1 cgd goto bad;
1569 1.1 cgd }
1570 1.130 lukem if ((options & SO_DEBUG) &&
1571 1.130 lukem setsockopt(data, SOL_SOCKET, SO_DEBUG,
1572 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1573 1.135 christos DWARN("setsockopt %s (ignored)", "SO_DEBUG");
1574 1.130 lukem }
1575 1.105 lukem len = sizeof(data_addr.si_su);
1576 1.105 lukem memset((char *)&data_addr, 0, sizeof (data_addr));
1577 1.132 lukem if (getsockname(data, (struct sockaddr *)&data_addr.si_su, &len) == -1) {
1578 1.6 cgd warn("getsockname");
1579 1.1 cgd goto bad;
1580 1.1 cgd }
1581 1.105 lukem data_addr.su_len = len;
1582 1.136 christos if (ftp_listen(data, 1) < 0)
1583 1.6 cgd warn("listen");
1584 1.48 itojun
1585 1.1 cgd if (sendport) {
1586 1.112 itojun char hname[NI_MAXHOST], sname[NI_MAXSERV];
1587 1.48 itojun int af;
1588 1.112 itojun struct sockinet tmp;
1589 1.48 itojun
1590 1.48 itojun switch (data_addr.su_family) {
1591 1.48 itojun case AF_INET:
1592 1.74 lukem if (!epsv4 || epsv4bad) {
1593 1.54 itojun result = COMPLETE + 1;
1594 1.54 itojun break;
1595 1.54 itojun }
1596 1.54 itojun /* FALLTHROUGH */
1597 1.58 christos #ifdef INET6
1598 1.48 itojun case AF_INET6:
1599 1.111 itojun #endif
1600 1.48 itojun af = (data_addr.su_family == AF_INET) ? 1 : 2;
1601 1.112 itojun tmp = data_addr;
1602 1.113 itojun #ifdef INET6
1603 1.112 itojun if (tmp.su_family == AF_INET6)
1604 1.112 itojun tmp.si_su.su_sin6.sin6_scope_id = 0;
1605 1.113 itojun #endif
1606 1.112 itojun if (getnameinfo((struct sockaddr *)&tmp.si_su,
1607 1.112 itojun tmp.su_len, hname, sizeof(hname), sname,
1608 1.112 itojun sizeof(sname), NI_NUMERICHOST | NI_NUMERICSERV)) {
1609 1.48 itojun result = ERROR;
1610 1.48 itojun } else {
1611 1.112 itojun result = command("EPRT |%d|%s|%s|", af, hname,
1612 1.112 itojun sname);
1613 1.85 lukem if (!connected)
1614 1.85 lukem return (1);
1615 1.74 lukem if (result != COMPLETE) {
1616 1.74 lukem epsv4bad = 1;
1617 1.135 christos DPRINTF("disabling epsv4 for this "
1618 1.135 christos "connection\n");
1619 1.74 lukem }
1620 1.48 itojun }
1621 1.48 itojun break;
1622 1.48 itojun default:
1623 1.48 itojun result = COMPLETE + 1;
1624 1.48 itojun break;
1625 1.48 itojun }
1626 1.48 itojun if (result == COMPLETE)
1627 1.48 itojun goto skip_port;
1628 1.48 itojun
1629 1.48 itojun switch (data_addr.su_family) {
1630 1.48 itojun case AF_INET:
1631 1.104 lukem a = (char *)&data_addr.si_su.su_sin.sin_addr;
1632 1.48 itojun p = (char *)&data_addr.su_port;
1633 1.48 itojun result = command("PORT %d,%d,%d,%d,%d,%d",
1634 1.48 itojun UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
1635 1.48 itojun UC(p[0]), UC(p[1]));
1636 1.48 itojun break;
1637 1.58 christos #ifdef INET6
1638 1.48 itojun case AF_INET6:
1639 1.104 lukem a = (char *)&data_addr.si_su.su_sin6.sin6_addr;
1640 1.48 itojun p = (char *)&data_addr.su_port;
1641 1.48 itojun result = command(
1642 1.85 lukem "LPRT %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
1643 1.48 itojun 6, 16,
1644 1.48 itojun UC(a[0]),UC(a[1]),UC(a[2]),UC(a[3]),
1645 1.48 itojun UC(a[4]),UC(a[5]),UC(a[6]),UC(a[7]),
1646 1.48 itojun UC(a[8]),UC(a[9]),UC(a[10]),UC(a[11]),
1647 1.48 itojun UC(a[12]),UC(a[13]),UC(a[14]),UC(a[15]),
1648 1.48 itojun 2, UC(p[0]), UC(p[1]));
1649 1.48 itojun break;
1650 1.58 christos #endif
1651 1.48 itojun default:
1652 1.48 itojun result = COMPLETE + 1; /* xxx */
1653 1.48 itojun }
1654 1.85 lukem if (!connected)
1655 1.85 lukem return (1);
1656 1.48 itojun skip_port:
1657 1.128 lukem
1658 1.1 cgd if (result == ERROR && sendport == -1) {
1659 1.1 cgd sendport = 0;
1660 1.1 cgd tmpno = 1;
1661 1.1 cgd goto noport;
1662 1.1 cgd }
1663 1.1 cgd return (result != COMPLETE);
1664 1.1 cgd }
1665 1.1 cgd if (tmpno)
1666 1.1 cgd sendport = 1;
1667 1.92 lukem #ifdef IPTOS_THROUGHPUT
1668 1.48 itojun if (data_addr.su_family == AF_INET) {
1669 1.48 itojun on = IPTOS_THROUGHPUT;
1670 1.130 lukem if (setsockopt(data, IPPROTO_IP, IP_TOS,
1671 1.131 lukem (void *)&on, sizeof(on)) == -1)
1672 1.135 christos DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT");
1673 1.48 itojun }
1674 1.92 lukem #endif
1675 1.1 cgd return (0);
1676 1.102 lukem bad:
1677 1.127 lukem (void)close(data);
1678 1.127 lukem data = -1;
1679 1.1 cgd if (tmpno)
1680 1.1 cgd sendport = 1;
1681 1.1 cgd return (1);
1682 1.1 cgd }
1683 1.1 cgd
1684 1.1 cgd FILE *
1685 1.95 lukem dataconn(const char *lmode)
1686 1.1 cgd {
1687 1.127 lukem struct sockinet from;
1688 1.132 lukem int s, flags, rv, timeout;
1689 1.127 lukem struct timeval endtime, now, td;
1690 1.127 lukem struct pollfd pfd[1];
1691 1.132 lukem socklen_t fromlen;
1692 1.8 cgd
1693 1.127 lukem if (passivemode) /* passive data connection */
1694 1.8 cgd return (fdopen(data, lmode));
1695 1.1 cgd
1696 1.127 lukem /* active mode data connection */
1697 1.127 lukem
1698 1.127 lukem if ((flags = fcntl(data, F_GETFL, 0)) == -1)
1699 1.127 lukem goto dataconn_failed; /* get current socket flags */
1700 1.127 lukem if (fcntl(data, F_SETFL, flags | O_NONBLOCK) == -1)
1701 1.127 lukem goto dataconn_failed; /* set non-blocking connect */
1702 1.127 lukem
1703 1.127 lukem /* NOTE: we now must restore socket flags on successful exit */
1704 1.127 lukem
1705 1.127 lukem /* limit time waiting on listening socket */
1706 1.127 lukem pfd[0].fd = data;
1707 1.127 lukem pfd[0].events = POLLIN;
1708 1.127 lukem (void)gettimeofday(&endtime, NULL); /* determine end time */
1709 1.127 lukem endtime.tv_sec += (quit_time > 0) ? quit_time: 60;
1710 1.127 lukem /* without -q, default to 60s */
1711 1.127 lukem do {
1712 1.127 lukem (void)gettimeofday(&now, NULL);
1713 1.127 lukem timersub(&endtime, &now, &td);
1714 1.127 lukem timeout = td.tv_sec * 1000 + td.tv_usec/1000;
1715 1.127 lukem if (timeout < 0)
1716 1.127 lukem timeout = 0;
1717 1.136 christos rv = ftp_poll(pfd, 1, timeout);
1718 1.127 lukem } while (rv == -1 && errno == EINTR); /* loop until poll ! EINTR */
1719 1.127 lukem if (rv == -1) {
1720 1.127 lukem warn("poll waiting before accept");
1721 1.127 lukem goto dataconn_failed;
1722 1.127 lukem }
1723 1.127 lukem if (rv == 0) {
1724 1.129 lukem warn("poll timeout waiting before accept");
1725 1.127 lukem goto dataconn_failed;
1726 1.127 lukem }
1727 1.127 lukem
1728 1.127 lukem /* (non-blocking) accept the connection */
1729 1.127 lukem fromlen = myctladdr.su_len;
1730 1.127 lukem do {
1731 1.127 lukem s = accept(data, (struct sockaddr *) &from.si_su, &fromlen);
1732 1.127 lukem } while (s == -1 && errno == EINTR); /* loop until accept ! EINTR */
1733 1.127 lukem if (s == -1) {
1734 1.6 cgd warn("accept");
1735 1.127 lukem goto dataconn_failed;
1736 1.1 cgd }
1737 1.127 lukem
1738 1.23 lukem (void)close(data);
1739 1.1 cgd data = s;
1740 1.127 lukem if (fcntl(data, F_SETFL, flags) == -1) /* restore socket flags */
1741 1.127 lukem goto dataconn_failed;
1742 1.127 lukem
1743 1.92 lukem #ifdef IPTOS_THROUGHPUT
1744 1.48 itojun if (from.su_family == AF_INET) {
1745 1.48 itojun int tos = IPTOS_THROUGHPUT;
1746 1.130 lukem if (setsockopt(s, IPPROTO_IP, IP_TOS,
1747 1.131 lukem (void *)&tos, sizeof(tos)) == -1) {
1748 1.135 christos DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT");
1749 1.48 itojun }
1750 1.48 itojun }
1751 1.92 lukem #endif
1752 1.1 cgd return (fdopen(data, lmode));
1753 1.128 lukem
1754 1.127 lukem dataconn_failed:
1755 1.127 lukem (void)close(data);
1756 1.127 lukem data = -1;
1757 1.127 lukem return (NULL);
1758 1.14 lukem }
1759 1.14 lukem
1760 1.14 lukem void
1761 1.95 lukem psabort(int notused)
1762 1.1 cgd {
1763 1.81 lukem int oerrno = errno;
1764 1.1 cgd
1765 1.126 lukem sigint_raised = 1;
1766 1.22 lukem alarmtimer(0);
1767 1.1 cgd abrtflag++;
1768 1.81 lukem errno = oerrno;
1769 1.1 cgd }
1770 1.1 cgd
1771 1.6 cgd void
1772 1.95 lukem pswitch(int flag)
1773 1.1 cgd {
1774 1.90 lukem sigfunc oldintr;
1775 1.1 cgd static struct comvars {
1776 1.1 cgd int connect;
1777 1.1 cgd char name[MAXHOSTNAMELEN];
1778 1.104 lukem struct sockinet mctl;
1779 1.104 lukem struct sockinet hctl;
1780 1.1 cgd FILE *in;
1781 1.1 cgd FILE *out;
1782 1.1 cgd int tpe;
1783 1.1 cgd int curtpe;
1784 1.1 cgd int cpnd;
1785 1.1 cgd int sunqe;
1786 1.1 cgd int runqe;
1787 1.1 cgd int mcse;
1788 1.1 cgd int ntflg;
1789 1.1 cgd char nti[17];
1790 1.1 cgd char nto[17];
1791 1.1 cgd int mapflg;
1792 1.1 cgd char mi[MAXPATHLEN];
1793 1.1 cgd char mo[MAXPATHLEN];
1794 1.1 cgd } proxstruct, tmpstruct;
1795 1.1 cgd struct comvars *ip, *op;
1796 1.1 cgd
1797 1.1 cgd abrtflag = 0;
1798 1.67 lukem oldintr = xsignal(SIGINT, psabort);
1799 1.1 cgd if (flag) {
1800 1.1 cgd if (proxy)
1801 1.1 cgd return;
1802 1.1 cgd ip = &tmpstruct;
1803 1.1 cgd op = &proxstruct;
1804 1.1 cgd proxy++;
1805 1.1 cgd } else {
1806 1.1 cgd if (!proxy)
1807 1.1 cgd return;
1808 1.1 cgd ip = &proxstruct;
1809 1.1 cgd op = &tmpstruct;
1810 1.1 cgd proxy = 0;
1811 1.1 cgd }
1812 1.1 cgd ip->connect = connected;
1813 1.1 cgd connected = op->connect;
1814 1.68 lukem if (hostname)
1815 1.68 lukem (void)strlcpy(ip->name, hostname, sizeof(ip->name));
1816 1.68 lukem else
1817 1.23 lukem ip->name[0] = '\0';
1818 1.1 cgd hostname = op->name;
1819 1.1 cgd ip->hctl = hisctladdr;
1820 1.1 cgd hisctladdr = op->hctl;
1821 1.1 cgd ip->mctl = myctladdr;
1822 1.1 cgd myctladdr = op->mctl;
1823 1.1 cgd ip->in = cin;
1824 1.1 cgd cin = op->in;
1825 1.1 cgd ip->out = cout;
1826 1.1 cgd cout = op->out;
1827 1.1 cgd ip->tpe = type;
1828 1.1 cgd type = op->tpe;
1829 1.1 cgd ip->curtpe = curtype;
1830 1.1 cgd curtype = op->curtpe;
1831 1.1 cgd ip->cpnd = cpend;
1832 1.1 cgd cpend = op->cpnd;
1833 1.1 cgd ip->sunqe = sunique;
1834 1.1 cgd sunique = op->sunqe;
1835 1.1 cgd ip->runqe = runique;
1836 1.1 cgd runique = op->runqe;
1837 1.1 cgd ip->mcse = mcase;
1838 1.1 cgd mcase = op->mcse;
1839 1.1 cgd ip->ntflg = ntflag;
1840 1.1 cgd ntflag = op->ntflg;
1841 1.68 lukem (void)strlcpy(ip->nti, ntin, sizeof(ip->nti));
1842 1.68 lukem (void)strlcpy(ntin, op->nti, sizeof(ntin));
1843 1.68 lukem (void)strlcpy(ip->nto, ntout, sizeof(ip->nto));
1844 1.68 lukem (void)strlcpy(ntout, op->nto, sizeof(ntout));
1845 1.1 cgd ip->mapflg = mapflag;
1846 1.1 cgd mapflag = op->mapflg;
1847 1.68 lukem (void)strlcpy(ip->mi, mapin, sizeof(ip->mi));
1848 1.68 lukem (void)strlcpy(mapin, op->mi, sizeof(mapin));
1849 1.68 lukem (void)strlcpy(ip->mo, mapout, sizeof(ip->mo));
1850 1.68 lukem (void)strlcpy(mapout, op->mo, sizeof(mapout));
1851 1.67 lukem (void)xsignal(SIGINT, oldintr);
1852 1.1 cgd if (abrtflag) {
1853 1.1 cgd abrtflag = 0;
1854 1.1 cgd (*oldintr)(SIGINT);
1855 1.1 cgd }
1856 1.1 cgd }
1857 1.1 cgd
1858 1.1 cgd void
1859 1.95 lukem abortpt(int notused)
1860 1.1 cgd {
1861 1.6 cgd
1862 1.126 lukem sigint_raised = 1;
1863 1.22 lukem alarmtimer(0);
1864 1.84 lukem if (fromatty)
1865 1.84 lukem write(fileno(ttyout), "\n", 1);
1866 1.1 cgd ptabflg++;
1867 1.1 cgd mflag = 0;
1868 1.1 cgd abrtflag = 0;
1869 1.81 lukem siglongjmp(ptabort, 1);
1870 1.1 cgd }
1871 1.1 cgd
1872 1.6 cgd void
1873 1.95 lukem proxtrans(const char *cmd, const char *local, const char *remote)
1874 1.1 cgd {
1875 1.90 lukem sigfunc oldintr;
1876 1.26 lukem int prox_type, nfnd;
1877 1.26 lukem volatile int secndflag;
1878 1.1 cgd char *cmd2;
1879 1.1 cgd
1880 1.35 lukem #ifdef __GNUC__ /* to shut up gcc warnings */
1881 1.26 lukem (void)&oldintr;
1882 1.26 lukem (void)&cmd2;
1883 1.26 lukem #endif
1884 1.26 lukem
1885 1.26 lukem oldintr = NULL;
1886 1.26 lukem secndflag = 0;
1887 1.1 cgd if (strcmp(cmd, "RETR"))
1888 1.1 cgd cmd2 = "RETR";
1889 1.1 cgd else
1890 1.1 cgd cmd2 = runique ? "STOU" : "STOR";
1891 1.1 cgd if ((prox_type = type) == 0) {
1892 1.1 cgd if (unix_server && unix_proxy)
1893 1.1 cgd prox_type = TYPE_I;
1894 1.1 cgd else
1895 1.1 cgd prox_type = TYPE_A;
1896 1.1 cgd }
1897 1.1 cgd if (curtype != prox_type)
1898 1.1 cgd changetype(prox_type, 1);
1899 1.1 cgd if (command("PASV") != COMPLETE) {
1900 1.35 lukem fputs("proxy server does not support third party transfers.\n",
1901 1.35 lukem ttyout);
1902 1.1 cgd return;
1903 1.1 cgd }
1904 1.1 cgd pswitch(0);
1905 1.1 cgd if (!connected) {
1906 1.35 lukem fputs("No primary connection.\n", ttyout);
1907 1.1 cgd pswitch(1);
1908 1.1 cgd code = -1;
1909 1.1 cgd return;
1910 1.1 cgd }
1911 1.1 cgd if (curtype != prox_type)
1912 1.1 cgd changetype(prox_type, 1);
1913 1.1 cgd if (command("PORT %s", pasv) != COMPLETE) {
1914 1.1 cgd pswitch(1);
1915 1.1 cgd return;
1916 1.1 cgd }
1917 1.81 lukem if (sigsetjmp(ptabort, 1))
1918 1.1 cgd goto abort;
1919 1.67 lukem oldintr = xsignal(SIGINT, abortpt);
1920 1.41 lukem if ((restart_point &&
1921 1.107 lukem (command("REST " LLF, (LLT) restart_point) != CONTINUE))
1922 1.103 lukem || (command("%s %s", cmd, remote) != PRELIM)) {
1923 1.67 lukem (void)xsignal(SIGINT, oldintr);
1924 1.1 cgd pswitch(1);
1925 1.1 cgd return;
1926 1.1 cgd }
1927 1.1 cgd sleep(2);
1928 1.1 cgd pswitch(1);
1929 1.1 cgd secndflag++;
1930 1.41 lukem if ((restart_point &&
1931 1.107 lukem (command("REST " LLF, (LLT) restart_point) != CONTINUE))
1932 1.103 lukem || (command("%s %s", cmd2, local) != PRELIM))
1933 1.1 cgd goto abort;
1934 1.1 cgd ptflag++;
1935 1.23 lukem (void)getreply(0);
1936 1.1 cgd pswitch(0);
1937 1.23 lukem (void)getreply(0);
1938 1.67 lukem (void)xsignal(SIGINT, oldintr);
1939 1.1 cgd pswitch(1);
1940 1.1 cgd ptflag = 0;
1941 1.35 lukem fprintf(ttyout, "local: %s remote: %s\n", local, remote);
1942 1.1 cgd return;
1943 1.102 lukem abort:
1944 1.82 lukem if (sigsetjmp(xferabort, 1)) {
1945 1.82 lukem (void)xsignal(SIGINT, oldintr);
1946 1.82 lukem return;
1947 1.82 lukem }
1948 1.82 lukem (void)xsignal(SIGINT, abort_squared);
1949 1.1 cgd ptflag = 0;
1950 1.1 cgd if (strcmp(cmd, "RETR") && !proxy)
1951 1.1 cgd pswitch(1);
1952 1.1 cgd else if (!strcmp(cmd, "RETR") && proxy)
1953 1.1 cgd pswitch(0);
1954 1.1 cgd if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
1955 1.1 cgd if (command("%s %s", cmd2, local) != PRELIM) {
1956 1.1 cgd pswitch(0);
1957 1.1 cgd if (cpend)
1958 1.31 lukem abort_remote(NULL);
1959 1.1 cgd }
1960 1.1 cgd pswitch(1);
1961 1.1 cgd if (ptabflg)
1962 1.1 cgd code = -1;
1963 1.67 lukem (void)xsignal(SIGINT, oldintr);
1964 1.1 cgd return;
1965 1.1 cgd }
1966 1.1 cgd if (cpend)
1967 1.31 lukem abort_remote(NULL);
1968 1.1 cgd pswitch(!proxy);
1969 1.1 cgd if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
1970 1.1 cgd if (command("%s %s", cmd2, local) != PRELIM) {
1971 1.1 cgd pswitch(0);
1972 1.1 cgd if (cpend)
1973 1.31 lukem abort_remote(NULL);
1974 1.1 cgd pswitch(1);
1975 1.1 cgd if (ptabflg)
1976 1.1 cgd code = -1;
1977 1.67 lukem (void)xsignal(SIGINT, oldintr);
1978 1.1 cgd return;
1979 1.1 cgd }
1980 1.1 cgd }
1981 1.1 cgd if (cpend)
1982 1.31 lukem abort_remote(NULL);
1983 1.1 cgd pswitch(!proxy);
1984 1.1 cgd if (cpend) {
1985 1.45 christos if ((nfnd = empty(cin, NULL, 10)) <= 0) {
1986 1.85 lukem if (nfnd < 0)
1987 1.6 cgd warn("abort");
1988 1.1 cgd if (ptabflg)
1989 1.1 cgd code = -1;
1990 1.85 lukem lostpeer(0);
1991 1.1 cgd }
1992 1.23 lukem (void)getreply(0);
1993 1.23 lukem (void)getreply(0);
1994 1.1 cgd }
1995 1.1 cgd if (proxy)
1996 1.1 cgd pswitch(0);
1997 1.1 cgd pswitch(1);
1998 1.1 cgd if (ptabflg)
1999 1.1 cgd code = -1;
2000 1.67 lukem (void)xsignal(SIGINT, oldintr);
2001 1.1 cgd }
2002 1.1 cgd
2003 1.6 cgd void
2004 1.95 lukem reset(int argc, char *argv[])
2005 1.1 cgd {
2006 1.1 cgd int nfnd = 1;
2007 1.1 cgd
2008 1.85 lukem if (argc == 0 && argv != NULL) {
2009 1.135 christos UPRINTF("usage: %s\n", argv[0]);
2010 1.85 lukem code = -1;
2011 1.85 lukem return;
2012 1.85 lukem }
2013 1.1 cgd while (nfnd > 0) {
2014 1.45 christos if ((nfnd = empty(cin, NULL, 0)) < 0) {
2015 1.6 cgd warn("reset");
2016 1.1 cgd code = -1;
2017 1.85 lukem lostpeer(0);
2018 1.85 lukem } else if (nfnd)
2019 1.23 lukem (void)getreply(0);
2020 1.1 cgd }
2021 1.1 cgd }
2022 1.1 cgd
2023 1.1 cgd char *
2024 1.95 lukem gunique(const char *local)
2025 1.1 cgd {
2026 1.1 cgd static char new[MAXPATHLEN];
2027 1.6 cgd char *cp = strrchr(local, '/');
2028 1.68 lukem int d, count=0, len;
2029 1.1 cgd char ext = '1';
2030 1.1 cgd
2031 1.1 cgd if (cp)
2032 1.1 cgd *cp = '\0';
2033 1.28 lukem d = access(cp == local ? "/" : cp ? local : ".", W_OK);
2034 1.1 cgd if (cp)
2035 1.1 cgd *cp = '/';
2036 1.1 cgd if (d < 0) {
2037 1.6 cgd warn("local: %s", local);
2038 1.31 lukem return (NULL);
2039 1.1 cgd }
2040 1.68 lukem len = strlcpy(new, local, sizeof(new));
2041 1.68 lukem cp = &new[len];
2042 1.128 lukem *cp++ = '.';
2043 1.1 cgd while (!d) {
2044 1.1 cgd if (++count == 100) {
2045 1.35 lukem fputs("runique: can't find unique file name.\n",
2046 1.35 lukem ttyout);
2047 1.31 lukem return (NULL);
2048 1.1 cgd }
2049 1.1 cgd *cp++ = ext;
2050 1.1 cgd *cp = '\0';
2051 1.1 cgd if (ext == '9')
2052 1.1 cgd ext = '0';
2053 1.1 cgd else
2054 1.1 cgd ext++;
2055 1.28 lukem if ((d = access(new, F_OK)) < 0)
2056 1.1 cgd break;
2057 1.1 cgd if (ext != '0')
2058 1.1 cgd cp--;
2059 1.1 cgd else if (*(cp - 2) == '.')
2060 1.1 cgd *(cp - 1) = '1';
2061 1.1 cgd else {
2062 1.1 cgd *(cp - 2) = *(cp - 2) + 1;
2063 1.1 cgd cp--;
2064 1.1 cgd }
2065 1.1 cgd }
2066 1.6 cgd return (new);
2067 1.82 lukem }
2068 1.82 lukem
2069 1.82 lukem /*
2070 1.82 lukem * abort_squared --
2071 1.82 lukem * aborts abort_remote(). lostpeer() is called because if the user is
2072 1.82 lukem * too impatient to wait or there's another problem then ftp really
2073 1.82 lukem * needs to get back to a known state.
2074 1.82 lukem */
2075 1.82 lukem void
2076 1.95 lukem abort_squared(int dummy)
2077 1.82 lukem {
2078 1.82 lukem char msgbuf[100];
2079 1.132 lukem size_t len;
2080 1.82 lukem
2081 1.126 lukem sigint_raised = 1;
2082 1.82 lukem alarmtimer(0);
2083 1.82 lukem len = strlcpy(msgbuf, "\nremote abort aborted; closing connection.\n",
2084 1.82 lukem sizeof(msgbuf));
2085 1.82 lukem write(fileno(ttyout), msgbuf, len);
2086 1.85 lukem lostpeer(0);
2087 1.82 lukem siglongjmp(xferabort, 1);
2088 1.1 cgd }
2089 1.1 cgd
2090 1.6 cgd void
2091 1.95 lukem abort_remote(FILE *din)
2092 1.1 cgd {
2093 1.65 lukem char buf[BUFSIZ];
2094 1.1 cgd int nfnd;
2095 1.1 cgd
2096 1.23 lukem if (cout == NULL) {
2097 1.23 lukem warnx("Lost control connection for abort.");
2098 1.23 lukem if (ptabflg)
2099 1.23 lukem code = -1;
2100 1.85 lukem lostpeer(0);
2101 1.23 lukem return;
2102 1.23 lukem }
2103 1.1 cgd /*
2104 1.1 cgd * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
2105 1.1 cgd * after urgent byte rather than before as is protocol now
2106 1.1 cgd */
2107 1.63 lukem buf[0] = IAC;
2108 1.63 lukem buf[1] = IP;
2109 1.63 lukem buf[2] = IAC;
2110 1.1 cgd if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
2111 1.6 cgd warn("abort");
2112 1.15 lukem fprintf(cout, "%cABOR\r\n", DM);
2113 1.23 lukem (void)fflush(cout);
2114 1.45 christos if ((nfnd = empty(cin, din, 10)) <= 0) {
2115 1.85 lukem if (nfnd < 0)
2116 1.6 cgd warn("abort");
2117 1.1 cgd if (ptabflg)
2118 1.1 cgd code = -1;
2119 1.85 lukem lostpeer(0);
2120 1.1 cgd }
2121 1.45 christos if (din && (nfnd & 2)) {
2122 1.1 cgd while (read(fileno(din), buf, BUFSIZ) > 0)
2123 1.45 christos continue;
2124 1.1 cgd }
2125 1.1 cgd if (getreply(0) == ERROR && code == 552) {
2126 1.1 cgd /* 552 needed for nic style abort */
2127 1.23 lukem (void)getreply(0);
2128 1.1 cgd }
2129 1.23 lukem (void)getreply(0);
2130 1.96 itojun }
2131 1.96 itojun
2132 1.96 itojun void
2133 1.96 itojun ai_unmapped(struct addrinfo *ai)
2134 1.96 itojun {
2135 1.98 lukem #ifdef INET6
2136 1.96 itojun struct sockaddr_in6 *sin6;
2137 1.96 itojun struct sockaddr_in sin;
2138 1.132 lukem socklen_t len;
2139 1.96 itojun
2140 1.96 itojun if (ai->ai_family != AF_INET6)
2141 1.96 itojun return;
2142 1.96 itojun if (ai->ai_addrlen != sizeof(struct sockaddr_in6) ||
2143 1.96 itojun sizeof(sin) > ai->ai_addrlen)
2144 1.96 itojun return;
2145 1.96 itojun sin6 = (struct sockaddr_in6 *)ai->ai_addr;
2146 1.96 itojun if (!IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
2147 1.96 itojun return;
2148 1.96 itojun
2149 1.96 itojun memset(&sin, 0, sizeof(sin));
2150 1.96 itojun sin.sin_family = AF_INET;
2151 1.99 lukem len = sizeof(struct sockaddr_in);
2152 1.96 itojun memcpy(&sin.sin_addr, &sin6->sin6_addr.s6_addr[12],
2153 1.96 itojun sizeof(sin.sin_addr));
2154 1.96 itojun sin.sin_port = sin6->sin6_port;
2155 1.96 itojun
2156 1.96 itojun ai->ai_family = AF_INET;
2157 1.107 lukem #if HAVE_SOCKADDR_SA_LEN
2158 1.99 lukem sin.sin_len = len;
2159 1.99 lukem #endif
2160 1.99 lukem memcpy(ai->ai_addr, &sin, len);
2161 1.99 lukem ai->ai_addrlen = len;
2162 1.98 lukem #endif
2163 1.1 cgd }
2164 1.135 christos
2165 1.135 christos #ifdef NO_USAGE
2166 1.135 christos void
2167 1.135 christos xusage(void)
2168 1.135 christos {
2169 1.135 christos fputs("Usage error\n", ttyout);
2170 1.135 christos }
2171 1.135 christos #endif
2172