ftp.c revision 1.159 1 1.159 jld /* $NetBSD: ftp.c,v 1.159 2009/04/15 03:42:33 jld Exp $ */
2 1.77 lukem
3 1.77 lukem /*-
4 1.158 lukem * Copyright (c) 1996-2009 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 *
19 1.77 lukem * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.77 lukem * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.77 lukem * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.77 lukem * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.77 lukem * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.77 lukem * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.77 lukem * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.77 lukem * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.77 lukem * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.77 lukem * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.77 lukem * POSSIBILITY OF SUCH DAMAGE.
30 1.77 lukem */
31 1.48 itojun
32 1.48 itojun /*
33 1.72 lukem * Copyright (c) 1985, 1989, 1993, 1994
34 1.72 lukem * The Regents of the University of California. All rights reserved.
35 1.72 lukem *
36 1.48 itojun * Redistribution and use in source and binary forms, with or without
37 1.48 itojun * modification, are permitted provided that the following conditions
38 1.48 itojun * are met:
39 1.48 itojun * 1. Redistributions of source code must retain the above copyright
40 1.48 itojun * notice, this list of conditions and the following disclaimer.
41 1.48 itojun * 2. Redistributions in binary form must reproduce the above copyright
42 1.48 itojun * notice, this list of conditions and the following disclaimer in the
43 1.48 itojun * documentation and/or other materials provided with the distribution.
44 1.122 agc * 3. Neither the name of the University nor the names of its contributors
45 1.48 itojun * may be used to endorse or promote products derived from this software
46 1.48 itojun * without specific prior written permission.
47 1.72 lukem *
48 1.72 lukem * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 1.48 itojun * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 1.48 itojun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 1.72 lukem * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 1.48 itojun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 1.48 itojun * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 1.48 itojun * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 1.48 itojun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 1.48 itojun * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 1.48 itojun * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 1.48 itojun * SUCH DAMAGE.
59 1.48 itojun */
60 1.12 tls
61 1.1 cgd /*
62 1.72 lukem * Copyright (C) 1997 and 1998 WIDE Project.
63 1.72 lukem * All rights reserved.
64 1.128 lukem *
65 1.1 cgd * Redistribution and use in source and binary forms, with or without
66 1.1 cgd * modification, are permitted provided that the following conditions
67 1.1 cgd * are met:
68 1.1 cgd * 1. Redistributions of source code must retain the above copyright
69 1.1 cgd * notice, this list of conditions and the following disclaimer.
70 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
71 1.1 cgd * notice, this list of conditions and the following disclaimer in the
72 1.1 cgd * documentation and/or other materials provided with the distribution.
73 1.72 lukem * 3. Neither the name of the project nor the names of its contributors
74 1.1 cgd * may be used to endorse or promote products derived from this software
75 1.1 cgd * without specific prior written permission.
76 1.128 lukem *
77 1.72 lukem * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
78 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
79 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
80 1.72 lukem * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
81 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
82 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
83 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
84 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
85 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
86 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
87 1.1 cgd * SUCH DAMAGE.
88 1.1 cgd */
89 1.1 cgd
90 1.26 lukem #include <sys/cdefs.h>
91 1.1 cgd #ifndef lint
92 1.12 tls #if 0
93 1.12 tls static char sccsid[] = "@(#)ftp.c 8.6 (Berkeley) 10/27/94";
94 1.12 tls #else
95 1.159 jld __RCSID("$NetBSD: ftp.c,v 1.159 2009/04/15 03:42:33 jld Exp $");
96 1.12 tls #endif
97 1.1 cgd #endif /* not lint */
98 1.1 cgd
99 1.21 lukem #include <sys/types.h>
100 1.1 cgd #include <sys/stat.h>
101 1.1 cgd #include <sys/socket.h>
102 1.33 christos #include <sys/time.h>
103 1.1 cgd
104 1.1 cgd #include <netinet/in.h>
105 1.1 cgd #include <netinet/in_systm.h>
106 1.1 cgd #include <netinet/ip.h>
107 1.6 cgd #include <arpa/inet.h>
108 1.1 cgd #include <arpa/ftp.h>
109 1.1 cgd #include <arpa/telnet.h>
110 1.1 cgd
111 1.6 cgd #include <ctype.h>
112 1.6 cgd #include <err.h>
113 1.1 cgd #include <errno.h>
114 1.127 lukem #include <fcntl.h>
115 1.1 cgd #include <netdb.h>
116 1.6 cgd #include <stdio.h>
117 1.6 cgd #include <stdlib.h>
118 1.6 cgd #include <string.h>
119 1.32 kleink #include <time.h>
120 1.6 cgd #include <unistd.h>
121 1.23 lukem #include <stdarg.h>
122 1.1 cgd
123 1.1 cgd #include "ftp_var.h"
124 1.48 itojun
125 1.126 lukem volatile sig_atomic_t abrtflag;
126 1.126 lukem volatile sig_atomic_t timeoutflag;
127 1.126 lukem
128 1.83 lukem sigjmp_buf ptabort;
129 1.6 cgd int ptabflg;
130 1.1 cgd int ptflag = 0;
131 1.73 lukem char pasv[BUFSIZ]; /* passive port for proxy data connection */
132 1.1 cgd
133 1.95 lukem static int empty(FILE *, FILE *, int);
134 1.45 christos
135 1.104 lukem struct sockinet {
136 1.104 lukem union sockunion {
137 1.104 lukem struct sockaddr_in su_sin;
138 1.62 lukem #ifdef INET6
139 1.104 lukem struct sockaddr_in6 su_sin6;
140 1.62 lukem #endif
141 1.104 lukem } si_su;
142 1.153 lukem #if !defined(HAVE_STRUCT_SOCKADDR_IN_SIN_LEN)
143 1.104 lukem int si_len;
144 1.62 lukem #endif
145 1.48 itojun };
146 1.52 christos
147 1.153 lukem #if !defined(HAVE_STRUCT_SOCKADDR_IN_SIN_LEN)
148 1.104 lukem # define su_len si_len
149 1.104 lukem #else
150 1.104 lukem # define su_len si_su.su_sin.sin_len
151 1.104 lukem #endif
152 1.104 lukem #define su_family si_su.su_sin.sin_family
153 1.104 lukem #define su_port si_su.su_sin.sin_port
154 1.48 itojun
155 1.104 lukem struct sockinet myctladdr, hisctladdr, data_addr;
156 1.1 cgd
157 1.1 cgd char *
158 1.158 lukem hookup(const char *host, const char *port)
159 1.1 cgd {
160 1.154 lukem int s = -1, error;
161 1.49 itojun struct addrinfo hints, *res, *res0;
162 1.14 lukem static char hostnamebuf[MAXHOSTNAMELEN];
163 1.132 lukem socklen_t len;
164 1.130 lukem int on = 1;
165 1.108 lukem
166 1.48 itojun memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
167 1.106 lukem memset((char *)&myctladdr, 0, sizeof (myctladdr));
168 1.48 itojun memset(&hints, 0, sizeof(hints));
169 1.48 itojun hints.ai_flags = AI_CANONNAME;
170 1.116 lukem hints.ai_family = family;
171 1.48 itojun hints.ai_socktype = SOCK_STREAM;
172 1.48 itojun hints.ai_protocol = 0;
173 1.154 lukem error = getaddrinfo(host, port, &hints, &res0);
174 1.48 itojun if (error) {
175 1.154 lukem warnx("Can't lookup `%s:%s': %s", host, port,
176 1.147 lukem (error == EAI_SYSTEM) ? strerror(errno)
177 1.147 lukem : gai_strerror(error));
178 1.48 itojun code = -1;
179 1.48 itojun return (0);
180 1.48 itojun }
181 1.1 cgd
182 1.49 itojun if (res0->ai_canonname)
183 1.68 lukem (void)strlcpy(hostnamebuf, res0->ai_canonname,
184 1.68 lukem sizeof(hostnamebuf));
185 1.48 itojun else
186 1.68 lukem (void)strlcpy(hostnamebuf, host, sizeof(hostnamebuf));
187 1.1 cgd hostname = hostnamebuf;
188 1.128 lukem
189 1.49 itojun for (res = res0; res; res = res->ai_next) {
190 1.154 lukem char hname[NI_MAXHOST], sname[NI_MAXSERV];
191 1.154 lukem
192 1.96 itojun ai_unmapped(res);
193 1.147 lukem if (getnameinfo(res->ai_addr, res->ai_addrlen,
194 1.154 lukem hname, sizeof(hname), sname, sizeof(sname),
195 1.154 lukem NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
196 1.154 lukem strlcpy(hname, "?", sizeof(hname));
197 1.154 lukem strlcpy(sname, "?", sizeof(sname));
198 1.154 lukem }
199 1.133 lukem if (verbose && res0->ai_next) {
200 1.133 lukem /* if we have multiple possibilities */
201 1.154 lukem fprintf(ttyout, "Trying %s:%s ...\n", hname, sname);
202 1.49 itojun }
203 1.109 lukem s = socket(res->ai_family, SOCK_STREAM, res->ai_protocol);
204 1.49 itojun if (s < 0) {
205 1.154 lukem warn("Can't create socket for connection to `%s:%s'",
206 1.154 lukem hname, sname);
207 1.49 itojun continue;
208 1.49 itojun }
209 1.147 lukem if (ftp_connect(s, res->ai_addr, res->ai_addrlen) < 0) {
210 1.49 itojun close(s);
211 1.49 itojun s = -1;
212 1.1 cgd continue;
213 1.1 cgd }
214 1.49 itojun
215 1.49 itojun /* finally we got one */
216 1.49 itojun break;
217 1.49 itojun }
218 1.49 itojun if (s < 0) {
219 1.154 lukem warnx("Can't connect to `%s:%s'", host, port);
220 1.1 cgd code = -1;
221 1.50 itojun freeaddrinfo(res0);
222 1.49 itojun return 0;
223 1.1 cgd }
224 1.104 lukem memcpy(&hisctladdr.si_su, res->ai_addr, res->ai_addrlen);
225 1.104 lukem hisctladdr.su_len = res->ai_addrlen;
226 1.49 itojun freeaddrinfo(res0);
227 1.49 itojun res0 = res = NULL;
228 1.58 christos
229 1.105 lukem len = hisctladdr.su_len;
230 1.132 lukem if (getsockname(s, (struct sockaddr *)&myctladdr.si_su, &len) == -1) {
231 1.154 lukem warn("Can't determine my address of connection to `%s:%s'",
232 1.154 lukem host, port);
233 1.1 cgd code = -1;
234 1.1 cgd goto bad;
235 1.1 cgd }
236 1.105 lukem myctladdr.su_len = len;
237 1.58 christos
238 1.92 lukem #ifdef IPTOS_LOWDELAY
239 1.104 lukem if (hisctladdr.su_family == AF_INET) {
240 1.53 christos int tos = IPTOS_LOWDELAY;
241 1.130 lukem if (setsockopt(s, IPPROTO_IP, IP_TOS,
242 1.131 lukem (void *)&tos, sizeof(tos)) == -1) {
243 1.135 christos DWARN("setsockopt %s (ignored)",
244 1.130 lukem "IPTOS_LOWDELAY");
245 1.130 lukem }
246 1.48 itojun }
247 1.92 lukem #endif
248 1.1 cgd cin = fdopen(s, "r");
249 1.1 cgd cout = fdopen(s, "w");
250 1.1 cgd if (cin == NULL || cout == NULL) {
251 1.147 lukem warnx("Can't fdopen socket");
252 1.1 cgd if (cin)
253 1.23 lukem (void)fclose(cin);
254 1.1 cgd if (cout)
255 1.23 lukem (void)fclose(cout);
256 1.1 cgd code = -1;
257 1.1 cgd goto bad;
258 1.1 cgd }
259 1.1 cgd if (verbose)
260 1.35 lukem fprintf(ttyout, "Connected to %s.\n", hostname);
261 1.87 lukem if (getreply(0) > 2) { /* read startup message from server */
262 1.1 cgd if (cin)
263 1.23 lukem (void)fclose(cin);
264 1.1 cgd if (cout)
265 1.23 lukem (void)fclose(cout);
266 1.1 cgd code = -1;
267 1.1 cgd goto bad;
268 1.1 cgd }
269 1.1 cgd
270 1.130 lukem if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE,
271 1.130 lukem (void *)&on, sizeof(on)) == -1) {
272 1.135 christos DWARN("setsockopt %s (ignored)", "SO_OOBINLINE");
273 1.1 cgd }
274 1.1 cgd
275 1.1 cgd return (hostname);
276 1.102 lukem bad:
277 1.23 lukem (void)close(s);
278 1.31 lukem return (NULL);
279 1.1 cgd }
280 1.1 cgd
281 1.1 cgd void
282 1.95 lukem cmdabort(int notused)
283 1.1 cgd {
284 1.81 lukem int oerrno = errno;
285 1.1 cgd
286 1.126 lukem sigint_raised = 1;
287 1.22 lukem alarmtimer(0);
288 1.84 lukem if (fromatty)
289 1.84 lukem write(fileno(ttyout), "\n", 1);
290 1.1 cgd abrtflag++;
291 1.1 cgd if (ptflag)
292 1.81 lukem siglongjmp(ptabort, 1);
293 1.81 lukem errno = oerrno;
294 1.1 cgd }
295 1.1 cgd
296 1.76 lukem void
297 1.95 lukem cmdtimeout(int notused)
298 1.76 lukem {
299 1.81 lukem int oerrno = errno;
300 1.76 lukem
301 1.76 lukem alarmtimer(0);
302 1.84 lukem if (fromatty)
303 1.84 lukem write(fileno(ttyout), "\n", 1);
304 1.76 lukem timeoutflag++;
305 1.76 lukem if (ptflag)
306 1.81 lukem siglongjmp(ptabort, 1);
307 1.81 lukem errno = oerrno;
308 1.76 lukem }
309 1.76 lukem
310 1.1 cgd /*VARARGS*/
311 1.6 cgd int
312 1.23 lukem command(const char *fmt, ...)
313 1.1 cgd {
314 1.1 cgd va_list ap;
315 1.1 cgd int r;
316 1.90 lukem sigfunc oldsigint;
317 1.1 cgd
318 1.135 christos #ifndef NO_DEBUG
319 1.137 christos if (ftp_debug) {
320 1.35 lukem fputs("---> ", ttyout);
321 1.23 lukem va_start(ap, fmt);
322 1.1 cgd if (strncmp("PASS ", fmt, 5) == 0)
323 1.35 lukem fputs("PASS XXXX", ttyout);
324 1.14 lukem else if (strncmp("ACCT ", fmt, 5) == 0)
325 1.35 lukem fputs("ACCT XXXX", ttyout);
326 1.14 lukem else
327 1.35 lukem vfprintf(ttyout, fmt, ap);
328 1.1 cgd va_end(ap);
329 1.35 lukem putc('\n', ttyout);
330 1.1 cgd }
331 1.135 christos #endif
332 1.1 cgd if (cout == NULL) {
333 1.147 lukem warnx("No control connection for command");
334 1.1 cgd code = -1;
335 1.1 cgd return (0);
336 1.1 cgd }
337 1.76 lukem
338 1.76 lukem abrtflag = 0;
339 1.76 lukem
340 1.76 lukem oldsigint = xsignal(SIGINT, cmdabort);
341 1.76 lukem
342 1.23 lukem va_start(ap, fmt);
343 1.1 cgd vfprintf(cout, fmt, ap);
344 1.1 cgd va_end(ap);
345 1.23 lukem fputs("\r\n", cout);
346 1.23 lukem (void)fflush(cout);
347 1.1 cgd cpend = 1;
348 1.1 cgd r = getreply(!strcmp(fmt, "QUIT"));
349 1.76 lukem if (abrtflag && oldsigint != SIG_IGN)
350 1.76 lukem (*oldsigint)(SIGINT);
351 1.76 lukem (void)xsignal(SIGINT, oldsigint);
352 1.6 cgd return (r);
353 1.1 cgd }
354 1.1 cgd
355 1.142 christos static const char *m421[] = {
356 1.142 christos "remote server timed out. Connection closed",
357 1.142 christos "user interrupt. Connection closed",
358 1.142 christos "remote server has closed connection",
359 1.142 christos };
360 1.142 christos
361 1.6 cgd int
362 1.95 lukem getreply(int expecteof)
363 1.1 cgd {
364 1.16 lukem char current_line[BUFSIZ]; /* last line of previous reply */
365 1.157 lukem int c, n, lineno;
366 1.6 cgd int dig;
367 1.1 cgd int originalcode = 0, continuation = 0;
368 1.90 lukem sigfunc oldsigint, oldsigalrm;
369 1.1 cgd int pflag = 0;
370 1.6 cgd char *cp, *pt = pasv;
371 1.1 cgd
372 1.76 lukem abrtflag = 0;
373 1.76 lukem timeoutflag = 0;
374 1.76 lukem
375 1.76 lukem oldsigint = xsignal(SIGINT, cmdabort);
376 1.76 lukem oldsigalrm = xsignal(SIGALRM, cmdtimeout);
377 1.76 lukem
378 1.157 lukem for (lineno = 0 ;; lineno++) {
379 1.1 cgd dig = n = code = 0;
380 1.16 lukem cp = current_line;
381 1.141 elad while (alarmtimer(quit_time ? quit_time : 60),
382 1.141 elad ((c = getc(cin)) != '\n')) {
383 1.1 cgd if (c == IAC) { /* handle telnet commands */
384 1.1 cgd switch (c = getc(cin)) {
385 1.1 cgd case WILL:
386 1.1 cgd case WONT:
387 1.1 cgd c = getc(cin);
388 1.1 cgd fprintf(cout, "%c%c%c", IAC, DONT, c);
389 1.23 lukem (void)fflush(cout);
390 1.1 cgd break;
391 1.1 cgd case DO:
392 1.1 cgd case DONT:
393 1.1 cgd c = getc(cin);
394 1.1 cgd fprintf(cout, "%c%c%c", IAC, WONT, c);
395 1.23 lukem (void)fflush(cout);
396 1.1 cgd break;
397 1.1 cgd default:
398 1.1 cgd break;
399 1.1 cgd }
400 1.1 cgd continue;
401 1.1 cgd }
402 1.1 cgd dig++;
403 1.1 cgd if (c == EOF) {
404 1.76 lukem /*
405 1.76 lukem * these will get trashed by pswitch()
406 1.76 lukem * in lostpeer()
407 1.76 lukem */
408 1.76 lukem int reply_timeoutflag = timeoutflag;
409 1.76 lukem int reply_abrtflag = abrtflag;
410 1.76 lukem
411 1.85 lukem alarmtimer(0);
412 1.85 lukem if (expecteof && feof(cin)) {
413 1.76 lukem (void)xsignal(SIGINT, oldsigint);
414 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
415 1.1 cgd code = 221;
416 1.1 cgd return (0);
417 1.1 cgd }
418 1.85 lukem cpend = 0;
419 1.85 lukem lostpeer(0);
420 1.1 cgd if (verbose) {
421 1.142 christos size_t midx;
422 1.76 lukem if (reply_timeoutflag)
423 1.142 christos midx = 0;
424 1.76 lukem else if (reply_abrtflag)
425 1.142 christos midx = 1;
426 1.76 lukem else
427 1.142 christos midx = 2;
428 1.144 lukem (void)fprintf(ttyout,
429 1.142 christos "421 Service not available, %s.\n", m421[midx]);
430 1.76 lukem (void)fflush(ttyout);
431 1.1 cgd }
432 1.1 cgd code = 421;
433 1.76 lukem (void)xsignal(SIGINT, oldsigint);
434 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
435 1.6 cgd return (4);
436 1.1 cgd }
437 1.1 cgd if (c != '\r' && (verbose > 0 ||
438 1.35 lukem ((verbose > -1 && n == '5' && dig > 4) &&
439 1.35 lukem (((!n && c < '5') || (n && n < '5'))
440 1.35 lukem || !retry_connect)))) {
441 1.1 cgd if (proxflag &&
442 1.16 lukem (dig == 1 || (dig == 5 && verbose == 0)))
443 1.35 lukem fprintf(ttyout, "%s:", hostname);
444 1.35 lukem (void)putc(c, ttyout);
445 1.1 cgd }
446 1.1 cgd if (dig < 4 && isdigit(c))
447 1.1 cgd code = code * 10 + (c - '0');
448 1.48 itojun if (!pflag && (code == 227 || code == 228))
449 1.1 cgd pflag = 1;
450 1.48 itojun else if (!pflag && code == 229)
451 1.48 itojun pflag = 100;
452 1.1 cgd if (dig > 4 && pflag == 1 && isdigit(c))
453 1.1 cgd pflag = 2;
454 1.1 cgd if (pflag == 2) {
455 1.118 itojun if (c != '\r' && c != ')') {
456 1.118 itojun if (pt < &pasv[sizeof(pasv) - 1])
457 1.118 itojun *pt++ = c;
458 1.118 itojun } else {
459 1.1 cgd *pt = '\0';
460 1.1 cgd pflag = 3;
461 1.1 cgd }
462 1.1 cgd }
463 1.48 itojun if (pflag == 100 && c == '(')
464 1.48 itojun pflag = 2;
465 1.1 cgd if (dig == 4 && c == '-') {
466 1.1 cgd if (continuation)
467 1.1 cgd code = 0;
468 1.1 cgd continuation++;
469 1.1 cgd }
470 1.1 cgd if (n == 0)
471 1.1 cgd n = c;
472 1.16 lukem if (cp < ¤t_line[sizeof(current_line) - 1])
473 1.1 cgd *cp++ = c;
474 1.1 cgd }
475 1.35 lukem if (verbose > 0 || ((verbose > -1 && n == '5') &&
476 1.35 lukem (n < '5' || !retry_connect))) {
477 1.35 lukem (void)putc(c, ttyout);
478 1.145 lukem (void)fflush(ttyout);
479 1.1 cgd }
480 1.102 lukem if (cp[-1] == '\r')
481 1.102 lukem cp[-1] = '\0';
482 1.102 lukem *cp = '\0';
483 1.157 lukem if (lineno == 0)
484 1.102 lukem (void)strlcpy(reply_string, current_line,
485 1.102 lukem sizeof(reply_string));
486 1.157 lukem if (lineno > 0 && code == 0 && reply_callback != NULL)
487 1.102 lukem (*reply_callback)(current_line);
488 1.1 cgd if (continuation && code != originalcode) {
489 1.1 cgd if (originalcode == 0)
490 1.1 cgd originalcode = code;
491 1.1 cgd continue;
492 1.1 cgd }
493 1.1 cgd if (n != '1')
494 1.1 cgd cpend = 0;
495 1.85 lukem alarmtimer(0);
496 1.76 lukem (void)xsignal(SIGINT, oldsigint);
497 1.76 lukem (void)xsignal(SIGALRM, oldsigalrm);
498 1.1 cgd if (code == 421 || originalcode == 421)
499 1.85 lukem lostpeer(0);
500 1.76 lukem if (abrtflag && oldsigint != cmdabort && oldsigint != SIG_IGN)
501 1.76 lukem (*oldsigint)(SIGINT);
502 1.76 lukem if (timeoutflag && oldsigalrm != cmdtimeout &&
503 1.76 lukem oldsigalrm != SIG_IGN)
504 1.76 lukem (*oldsigalrm)(SIGINT);
505 1.1 cgd return (n - '0');
506 1.1 cgd }
507 1.1 cgd }
508 1.1 cgd
509 1.45 christos static int
510 1.157 lukem empty(FILE *ecin, FILE *din, int sec)
511 1.1 cgd {
512 1.127 lukem int nr, nfd;
513 1.127 lukem struct pollfd pfd[2];
514 1.45 christos
515 1.127 lukem nfd = 0;
516 1.157 lukem if (ecin) {
517 1.157 lukem pfd[nfd].fd = fileno(ecin);
518 1.124 lukem pfd[nfd++].events = POLLIN;
519 1.45 christos }
520 1.45 christos
521 1.45 christos if (din) {
522 1.124 lukem pfd[nfd].fd = fileno(din);
523 1.124 lukem pfd[nfd++].events = POLLIN;
524 1.45 christos }
525 1.45 christos
526 1.136 christos if ((nr = ftp_poll(pfd, nfd, sec * 1000)) <= 0)
527 1.45 christos return nr;
528 1.45 christos
529 1.45 christos nr = 0;
530 1.45 christos nfd = 0;
531 1.157 lukem if (ecin)
532 1.45 christos nr |= (pfd[nfd++].revents & POLLIN) ? 1 : 0;
533 1.45 christos if (din)
534 1.45 christos nr |= (pfd[nfd++].revents & POLLIN) ? 2 : 0;
535 1.45 christos return nr;
536 1.1 cgd }
537 1.1 cgd
538 1.83 lukem sigjmp_buf xferabort;
539 1.1 cgd
540 1.1 cgd void
541 1.95 lukem abortxfer(int notused)
542 1.1 cgd {
543 1.81 lukem char msgbuf[100];
544 1.132 lukem size_t len;
545 1.1 cgd
546 1.126 lukem sigint_raised = 1;
547 1.22 lukem alarmtimer(0);
548 1.1 cgd mflag = 0;
549 1.1 cgd abrtflag = 0;
550 1.81 lukem switch (direction[0]) {
551 1.81 lukem case 'r':
552 1.81 lukem strlcpy(msgbuf, "\nreceive", sizeof(msgbuf));
553 1.81 lukem break;
554 1.81 lukem case 's':
555 1.81 lukem strlcpy(msgbuf, "\nsend", sizeof(msgbuf));
556 1.81 lukem break;
557 1.81 lukem default:
558 1.147 lukem errx(1, "abortxfer: unknown direction `%s'", direction);
559 1.81 lukem }
560 1.85 lukem len = strlcat(msgbuf, " aborted. Waiting for remote to finish abort.\n",
561 1.81 lukem sizeof(msgbuf));
562 1.81 lukem write(fileno(ttyout), msgbuf, len);
563 1.81 lukem siglongjmp(xferabort, 1);
564 1.1 cgd }
565 1.1 cgd
566 1.149 lukem /*
567 1.149 lukem * Read data from infd & write to outfd, using buf/bufsize as the temporary
568 1.149 lukem * buffer, dealing with short writes.
569 1.149 lukem * If rate_limit != 0, rate-limit the transfer.
570 1.149 lukem * If hash_interval != 0, fputc('c', ttyout) every hash_interval bytes.
571 1.149 lukem * Updates global variables: bytes.
572 1.149 lukem * Returns 0 if ok, 1 if there was a read error, 2 if there was a write error.
573 1.149 lukem * In the case of error, errno contains the appropriate error code.
574 1.149 lukem */
575 1.149 lukem static int
576 1.149 lukem copy_bytes(int infd, int outfd, char *buf, size_t bufsize,
577 1.149 lukem int rate_limit, int hash_interval)
578 1.149 lukem {
579 1.149 lukem volatile off_t hashc;
580 1.149 lukem ssize_t inc, outc;
581 1.149 lukem char *bufp;
582 1.149 lukem struct timeval tvthen, tvnow, tvdiff;
583 1.149 lukem off_t bufrem, bufchunk;
584 1.149 lukem int serr;
585 1.149 lukem
586 1.149 lukem hashc = hash_interval;
587 1.149 lukem if (rate_limit)
588 1.149 lukem bufchunk = rate_limit;
589 1.149 lukem else
590 1.149 lukem bufchunk = bufsize;
591 1.149 lukem
592 1.149 lukem while (1) {
593 1.149 lukem if (rate_limit) {
594 1.149 lukem (void)gettimeofday(&tvthen, NULL);
595 1.149 lukem }
596 1.149 lukem errno = 0;
597 1.149 lukem inc = outc = 0;
598 1.149 lukem /* copy bufchunk at a time */
599 1.149 lukem bufrem = bufchunk;
600 1.149 lukem while (bufrem > 0) {
601 1.158 lukem inc = read(infd, buf, MIN((off_t)bufsize, bufrem));
602 1.149 lukem if (inc <= 0)
603 1.149 lukem goto copy_done;
604 1.149 lukem bytes += inc;
605 1.149 lukem bufrem -= inc;
606 1.149 lukem bufp = buf;
607 1.149 lukem while (inc > 0) {
608 1.149 lukem outc = write(outfd, bufp, inc);
609 1.149 lukem if (outc < 0)
610 1.149 lukem goto copy_done;
611 1.149 lukem inc -= outc;
612 1.149 lukem bufp += outc;
613 1.149 lukem }
614 1.149 lukem if (hash_interval) {
615 1.149 lukem while (bytes >= hashc) {
616 1.149 lukem (void)putc('#', ttyout);
617 1.149 lukem hashc += hash_interval;
618 1.149 lukem }
619 1.149 lukem (void)fflush(ttyout);
620 1.149 lukem }
621 1.149 lukem }
622 1.149 lukem if (rate_limit) { /* rate limited; wait if necessary */
623 1.149 lukem while (1) {
624 1.149 lukem (void)gettimeofday(&tvnow, NULL);
625 1.149 lukem timersub(&tvnow, &tvthen, &tvdiff);
626 1.149 lukem if (tvdiff.tv_sec > 0)
627 1.149 lukem break;
628 1.149 lukem usleep(1000000 - tvdiff.tv_usec);
629 1.149 lukem }
630 1.149 lukem }
631 1.149 lukem }
632 1.149 lukem
633 1.149 lukem copy_done:
634 1.149 lukem serr = errno;
635 1.149 lukem if (hash_interval && bytes > 0) {
636 1.149 lukem if (bytes < hash_interval)
637 1.149 lukem (void)putc('#', ttyout);
638 1.149 lukem (void)putc('\n', ttyout);
639 1.149 lukem (void)fflush(ttyout);
640 1.149 lukem }
641 1.149 lukem errno = serr;
642 1.149 lukem if (inc == -1)
643 1.149 lukem return 1;
644 1.149 lukem if (outc == -1)
645 1.149 lukem return 2;
646 1.149 lukem
647 1.149 lukem return 0;
648 1.149 lukem }
649 1.149 lukem
650 1.6 cgd void
651 1.95 lukem sendrequest(const char *cmd, const char *local, const char *remote,
652 1.95 lukem int printnames)
653 1.1 cgd {
654 1.1 cgd struct stat st;
655 1.149 lukem int c;
656 1.143 christos FILE *volatile fin;
657 1.143 christos FILE *volatile dout;
658 1.143 christos int (*volatile closefunc)(FILE *);
659 1.143 christos sigfunc volatile oldintr;
660 1.143 christos sigfunc volatile oldintp;
661 1.143 christos off_t volatile hashbytes;
662 1.149 lukem int hash_interval;
663 1.158 lukem const char *lmode;
664 1.64 lukem static size_t bufsize;
665 1.64 lukem static char *buf;
666 1.23 lukem int oprogress;
667 1.1 cgd
668 1.16 lukem hashbytes = mark;
669 1.14 lukem direction = "sent";
670 1.26 lukem dout = NULL;
671 1.14 lukem bytes = 0;
672 1.16 lukem filesize = -1;
673 1.23 lukem oprogress = progress;
674 1.1 cgd if (verbose && printnames) {
675 1.138 christos if (*local != '-')
676 1.35 lukem fprintf(ttyout, "local: %s ", local);
677 1.1 cgd if (remote)
678 1.35 lukem fprintf(ttyout, "remote: %s\n", remote);
679 1.1 cgd }
680 1.1 cgd if (proxy) {
681 1.1 cgd proxtrans(cmd, local, remote);
682 1.1 cgd return;
683 1.1 cgd }
684 1.1 cgd if (curtype != type)
685 1.1 cgd changetype(type, 0);
686 1.1 cgd closefunc = NULL;
687 1.1 cgd oldintr = NULL;
688 1.1 cgd oldintp = NULL;
689 1.1 cgd lmode = "w";
690 1.81 lukem if (sigsetjmp(xferabort, 1)) {
691 1.85 lukem while (cpend)
692 1.23 lukem (void)getreply(0);
693 1.79 lukem code = -1;
694 1.30 lukem goto cleanupsend;
695 1.1 cgd }
696 1.80 lukem (void)xsignal(SIGQUIT, psummary);
697 1.81 lukem oldintr = xsignal(SIGINT, abortxfer);
698 1.23 lukem if (strcmp(local, "-") == 0) {
699 1.1 cgd fin = stdin;
700 1.23 lukem progress = 0;
701 1.23 lukem } else if (*local == '|') {
702 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
703 1.1 cgd fin = popen(local + 1, "r");
704 1.1 cgd if (fin == NULL) {
705 1.147 lukem warn("Can't execute `%s'", local + 1);
706 1.79 lukem code = -1;
707 1.30 lukem goto cleanupsend;
708 1.1 cgd }
709 1.23 lukem progress = 0;
710 1.1 cgd closefunc = pclose;
711 1.1 cgd } else {
712 1.1 cgd fin = fopen(local, "r");
713 1.1 cgd if (fin == NULL) {
714 1.147 lukem warn("Can't open `%s'", local);
715 1.79 lukem code = -1;
716 1.30 lukem goto cleanupsend;
717 1.1 cgd }
718 1.1 cgd closefunc = fclose;
719 1.29 mycroft if (fstat(fileno(fin), &st) < 0 || !S_ISREG(st.st_mode)) {
720 1.35 lukem fprintf(ttyout, "%s: not a plain file.\n", local);
721 1.79 lukem code = -1;
722 1.30 lukem goto cleanupsend;
723 1.1 cgd }
724 1.16 lukem filesize = st.st_size;
725 1.1 cgd }
726 1.1 cgd if (initconn()) {
727 1.79 lukem code = -1;
728 1.30 lukem goto cleanupsend;
729 1.1 cgd }
730 1.81 lukem if (sigsetjmp(xferabort, 1))
731 1.1 cgd goto abort;
732 1.1 cgd
733 1.1 cgd if (restart_point &&
734 1.1 cgd (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
735 1.6 cgd int rc;
736 1.6 cgd
737 1.21 lukem rc = -1;
738 1.6 cgd switch (curtype) {
739 1.6 cgd case TYPE_A:
740 1.115 lukem rc = fseeko(fin, restart_point, SEEK_SET);
741 1.6 cgd break;
742 1.6 cgd case TYPE_I:
743 1.6 cgd case TYPE_L:
744 1.6 cgd rc = lseek(fileno(fin), restart_point, SEEK_SET);
745 1.6 cgd break;
746 1.6 cgd }
747 1.6 cgd if (rc < 0) {
748 1.147 lukem warn("Can't seek to restart `%s'", local);
749 1.30 lukem goto cleanupsend;
750 1.1 cgd }
751 1.107 lukem if (command("REST " LLF, (LLT)restart_point) != CONTINUE)
752 1.30 lukem goto cleanupsend;
753 1.119 lukem lmode = "r+";
754 1.1 cgd }
755 1.1 cgd if (remote) {
756 1.85 lukem if (command("%s %s", cmd, remote) != PRELIM)
757 1.30 lukem goto cleanupsend;
758 1.85 lukem } else {
759 1.85 lukem if (command("%s", cmd) != PRELIM)
760 1.30 lukem goto cleanupsend;
761 1.85 lukem }
762 1.121 lukem dirchange = 1;
763 1.1 cgd dout = dataconn(lmode);
764 1.1 cgd if (dout == NULL)
765 1.1 cgd goto abort;
766 1.64 lukem
767 1.158 lukem if ((size_t)sndbuf_size > bufsize) {
768 1.64 lukem if (buf)
769 1.64 lukem (void)free(buf);
770 1.64 lukem bufsize = sndbuf_size;
771 1.136 christos buf = ftp_malloc(bufsize);
772 1.64 lukem }
773 1.64 lukem
774 1.16 lukem progressmeter(-1);
775 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
776 1.149 lukem hash_interval = (hash && (!progress || filesize < 0)) ? mark : 0;
777 1.64 lukem
778 1.1 cgd switch (curtype) {
779 1.1 cgd
780 1.1 cgd case TYPE_I:
781 1.1 cgd case TYPE_L:
782 1.149 lukem c = copy_bytes(fileno(fin), fileno(dout), buf, bufsize,
783 1.149 lukem rate_put, hash_interval);
784 1.149 lukem if (c == 1) {
785 1.147 lukem warn("Reading `%s'", local);
786 1.149 lukem } else if (c == 2) {
787 1.14 lukem if (errno != EPIPE)
788 1.147 lukem warn("Writing to network");
789 1.1 cgd bytes = -1;
790 1.1 cgd }
791 1.1 cgd break;
792 1.1 cgd
793 1.1 cgd case TYPE_A:
794 1.1 cgd while ((c = getc(fin)) != EOF) {
795 1.1 cgd if (c == '\n') {
796 1.149 lukem while (hash_interval && bytes >= hashbytes) {
797 1.35 lukem (void)putc('#', ttyout);
798 1.35 lukem (void)fflush(ttyout);
799 1.14 lukem hashbytes += mark;
800 1.1 cgd }
801 1.1 cgd if (ferror(dout))
802 1.1 cgd break;
803 1.23 lukem (void)putc('\r', dout);
804 1.1 cgd bytes++;
805 1.1 cgd }
806 1.23 lukem (void)putc(c, dout);
807 1.1 cgd bytes++;
808 1.150 lukem #if 0 /* this violates RFC0959 */
809 1.16 lukem if (c == '\r') {
810 1.16 lukem (void)putc('\0', dout);
811 1.16 lukem bytes++;
812 1.16 lukem }
813 1.16 lukem #endif
814 1.1 cgd }
815 1.149 lukem if (hash_interval) {
816 1.1 cgd if (bytes < hashbytes)
817 1.35 lukem (void)putc('#', ttyout);
818 1.35 lukem (void)putc('\n', ttyout);
819 1.1 cgd }
820 1.1 cgd if (ferror(fin))
821 1.147 lukem warn("Reading `%s'", local);
822 1.1 cgd if (ferror(dout)) {
823 1.1 cgd if (errno != EPIPE)
824 1.147 lukem warn("Writing to network");
825 1.1 cgd bytes = -1;
826 1.1 cgd }
827 1.1 cgd break;
828 1.1 cgd }
829 1.78 lukem
830 1.22 lukem progressmeter(1);
831 1.78 lukem if (closefunc != NULL) {
832 1.1 cgd (*closefunc)(fin);
833 1.78 lukem fin = NULL;
834 1.78 lukem }
835 1.79 lukem (void)fclose(dout);
836 1.79 lukem dout = NULL;
837 1.23 lukem (void)getreply(0);
838 1.1 cgd if (bytes > 0)
839 1.16 lukem ptransfer(0);
840 1.30 lukem goto cleanupsend;
841 1.78 lukem
842 1.102 lukem abort:
843 1.80 lukem (void)xsignal(SIGINT, oldintr);
844 1.80 lukem oldintr = NULL;
845 1.78 lukem if (!cpend) {
846 1.79 lukem code = -1;
847 1.78 lukem goto cleanupsend;
848 1.78 lukem }
849 1.80 lukem if (data >= 0) {
850 1.80 lukem (void)close(data);
851 1.80 lukem data = -1;
852 1.80 lukem }
853 1.80 lukem if (dout) {
854 1.80 lukem (void)fclose(dout);
855 1.80 lukem dout = NULL;
856 1.80 lukem }
857 1.78 lukem (void)getreply(0);
858 1.79 lukem code = -1;
859 1.78 lukem if (bytes > 0)
860 1.78 lukem ptransfer(0);
861 1.78 lukem
862 1.102 lukem cleanupsend:
863 1.81 lukem if (oldintr)
864 1.81 lukem (void)xsignal(SIGINT, oldintr);
865 1.81 lukem if (oldintp)
866 1.81 lukem (void)xsignal(SIGPIPE, oldintp);
867 1.80 lukem if (data >= 0) {
868 1.80 lukem (void)close(data);
869 1.80 lukem data = -1;
870 1.80 lukem }
871 1.78 lukem if (closefunc != NULL && fin != NULL)
872 1.78 lukem (*closefunc)(fin);
873 1.78 lukem if (dout)
874 1.78 lukem (void)fclose(dout);
875 1.30 lukem progress = oprogress;
876 1.30 lukem restart_point = 0;
877 1.78 lukem bytes = 0;
878 1.1 cgd }
879 1.1 cgd
880 1.6 cgd void
881 1.143 christos recvrequest(const char *cmd, const char *volatile local, const char *remote,
882 1.95 lukem const char *lmode, int printnames, int ignorespecial)
883 1.1 cgd {
884 1.143 christos FILE *volatile fout;
885 1.143 christos FILE *volatile din;
886 1.143 christos int (*volatile closefunc)(FILE *);
887 1.143 christos sigfunc volatile oldintr;
888 1.143 christos sigfunc volatile oldintp;
889 1.26 lukem int c, d;
890 1.143 christos int volatile is_retr;
891 1.143 christos int volatile tcrflag;
892 1.143 christos int volatile bare_lfs;
893 1.47 lukem static size_t bufsize;
894 1.47 lukem static char *buf;
895 1.143 christos off_t volatile hashbytes;
896 1.149 lukem int hash_interval;
897 1.1 cgd struct stat st;
898 1.15 lukem time_t mtime;
899 1.16 lukem struct timeval tval[2];
900 1.23 lukem int oprogress;
901 1.24 lukem int opreserve;
902 1.1 cgd
903 1.26 lukem fout = NULL;
904 1.26 lukem din = NULL;
905 1.16 lukem hashbytes = mark;
906 1.14 lukem direction = "received";
907 1.14 lukem bytes = 0;
908 1.26 lukem bare_lfs = 0;
909 1.16 lukem filesize = -1;
910 1.23 lukem oprogress = progress;
911 1.24 lukem opreserve = preserve;
912 1.30 lukem is_retr = (strcmp(cmd, "RETR") == 0);
913 1.1 cgd if (is_retr && verbose && printnames) {
914 1.139 christos if (ignorespecial || *local != '-')
915 1.35 lukem fprintf(ttyout, "local: %s ", local);
916 1.1 cgd if (remote)
917 1.35 lukem fprintf(ttyout, "remote: %s\n", remote);
918 1.1 cgd }
919 1.1 cgd if (proxy && is_retr) {
920 1.1 cgd proxtrans(cmd, local, remote);
921 1.1 cgd return;
922 1.1 cgd }
923 1.1 cgd closefunc = NULL;
924 1.1 cgd oldintr = NULL;
925 1.1 cgd oldintp = NULL;
926 1.1 cgd tcrflag = !crflag && is_retr;
927 1.81 lukem if (sigsetjmp(xferabort, 1)) {
928 1.85 lukem while (cpend)
929 1.23 lukem (void)getreply(0);
930 1.79 lukem code = -1;
931 1.78 lukem goto cleanuprecv;
932 1.1 cgd }
933 1.80 lukem (void)xsignal(SIGQUIT, psummary);
934 1.81 lukem oldintr = xsignal(SIGINT, abortxfer);
935 1.27 lukem if (ignorespecial || (strcmp(local, "-") && *local != '|')) {
936 1.28 lukem if (access(local, W_OK) < 0) {
937 1.6 cgd char *dir = strrchr(local, '/');
938 1.1 cgd
939 1.1 cgd if (errno != ENOENT && errno != EACCES) {
940 1.147 lukem warn("Can't access `%s'", local);
941 1.79 lukem code = -1;
942 1.78 lukem goto cleanuprecv;
943 1.1 cgd }
944 1.1 cgd if (dir != NULL)
945 1.1 cgd *dir = 0;
946 1.46 lukem d = access(dir == local ? "/" :
947 1.46 lukem dir ? local : ".", W_OK);
948 1.1 cgd if (dir != NULL)
949 1.1 cgd *dir = '/';
950 1.1 cgd if (d < 0) {
951 1.147 lukem warn("Can't access `%s'", local);
952 1.79 lukem code = -1;
953 1.78 lukem goto cleanuprecv;
954 1.1 cgd }
955 1.1 cgd if (!runique && errno == EACCES &&
956 1.35 lukem chmod(local, (S_IRUSR|S_IWUSR)) < 0) {
957 1.147 lukem warn("Can't chmod `%s'", local);
958 1.79 lukem code = -1;
959 1.78 lukem goto cleanuprecv;
960 1.1 cgd }
961 1.1 cgd if (runique && errno == EACCES &&
962 1.1 cgd (local = gunique(local)) == NULL) {
963 1.79 lukem code = -1;
964 1.78 lukem goto cleanuprecv;
965 1.1 cgd }
966 1.1 cgd }
967 1.1 cgd else if (runique && (local = gunique(local)) == NULL) {
968 1.79 lukem code = -1;
969 1.78 lukem goto cleanuprecv;
970 1.1 cgd }
971 1.1 cgd }
972 1.1 cgd if (!is_retr) {
973 1.1 cgd if (curtype != TYPE_A)
974 1.1 cgd changetype(TYPE_A, 0);
975 1.16 lukem } else {
976 1.16 lukem if (curtype != type)
977 1.16 lukem changetype(type, 0);
978 1.19 lukem filesize = remotesize(remote, 0);
979 1.85 lukem if (code == 421 || code == -1)
980 1.85 lukem goto cleanuprecv;
981 1.16 lukem }
982 1.1 cgd if (initconn()) {
983 1.79 lukem code = -1;
984 1.78 lukem goto cleanuprecv;
985 1.1 cgd }
986 1.81 lukem if (sigsetjmp(xferabort, 1))
987 1.1 cgd goto abort;
988 1.1 cgd if (is_retr && restart_point &&
989 1.107 lukem command("REST " LLF, (LLT) restart_point) != CONTINUE)
990 1.78 lukem goto cleanuprecv;
991 1.88 lukem if (! EMPTYSTRING(remote)) {
992 1.85 lukem if (command("%s %s", cmd, remote) != PRELIM)
993 1.78 lukem goto cleanuprecv;
994 1.1 cgd } else {
995 1.85 lukem if (command("%s", cmd) != PRELIM)
996 1.78 lukem goto cleanuprecv;
997 1.1 cgd }
998 1.1 cgd din = dataconn("r");
999 1.1 cgd if (din == NULL)
1000 1.1 cgd goto abort;
1001 1.27 lukem if (!ignorespecial && strcmp(local, "-") == 0) {
1002 1.1 cgd fout = stdout;
1003 1.23 lukem progress = 0;
1004 1.24 lukem preserve = 0;
1005 1.27 lukem } else if (!ignorespecial && *local == '|') {
1006 1.67 lukem oldintp = xsignal(SIGPIPE, SIG_IGN);
1007 1.1 cgd fout = popen(local + 1, "w");
1008 1.1 cgd if (fout == NULL) {
1009 1.147 lukem warn("Can't execute `%s'", local+1);
1010 1.1 cgd goto abort;
1011 1.1 cgd }
1012 1.23 lukem progress = 0;
1013 1.24 lukem preserve = 0;
1014 1.1 cgd closefunc = pclose;
1015 1.1 cgd } else {
1016 1.1 cgd fout = fopen(local, lmode);
1017 1.1 cgd if (fout == NULL) {
1018 1.147 lukem warn("Can't open `%s'", local);
1019 1.1 cgd goto abort;
1020 1.1 cgd }
1021 1.1 cgd closefunc = fclose;
1022 1.1 cgd }
1023 1.46 lukem
1024 1.64 lukem if (fstat(fileno(fout), &st) != -1 && !S_ISREG(st.st_mode)) {
1025 1.64 lukem progress = 0;
1026 1.64 lukem preserve = 0;
1027 1.64 lukem }
1028 1.158 lukem if ((size_t)rcvbuf_size > bufsize) {
1029 1.1 cgd if (buf)
1030 1.23 lukem (void)free(buf);
1031 1.64 lukem bufsize = rcvbuf_size;
1032 1.136 christos buf = ftp_malloc(bufsize);
1033 1.1 cgd }
1034 1.64 lukem
1035 1.16 lukem progressmeter(-1);
1036 1.149 lukem hash_interval = (hash && (!progress || filesize < 0)) ? mark : 0;
1037 1.64 lukem
1038 1.1 cgd switch (curtype) {
1039 1.1 cgd
1040 1.1 cgd case TYPE_I:
1041 1.1 cgd case TYPE_L:
1042 1.30 lukem if (is_retr && restart_point &&
1043 1.6 cgd lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
1044 1.147 lukem warn("Can't seek to restart `%s'", local);
1045 1.78 lukem goto cleanuprecv;
1046 1.1 cgd }
1047 1.149 lukem c = copy_bytes(fileno(din), fileno(fout), buf, bufsize,
1048 1.149 lukem rate_get, hash_interval);
1049 1.149 lukem if (c == 1) {
1050 1.1 cgd if (errno != EPIPE)
1051 1.147 lukem warn("Reading from network");
1052 1.1 cgd bytes = -1;
1053 1.149 lukem } else if (c == 2) {
1054 1.149 lukem warn("Writing `%s'", local);
1055 1.1 cgd }
1056 1.1 cgd break;
1057 1.1 cgd
1058 1.1 cgd case TYPE_A:
1059 1.30 lukem if (is_retr && restart_point) {
1060 1.30 lukem int ch;
1061 1.115 lukem off_t i;
1062 1.1 cgd
1063 1.115 lukem if (fseeko(fout, (off_t)0, SEEK_SET) < 0)
1064 1.1 cgd goto done;
1065 1.115 lukem for (i = 0; i++ < restart_point;) {
1066 1.1 cgd if ((ch = getc(fout)) == EOF)
1067 1.1 cgd goto done;
1068 1.1 cgd if (ch == '\n')
1069 1.1 cgd i++;
1070 1.1 cgd }
1071 1.115 lukem if (fseeko(fout, (off_t)0, SEEK_CUR) < 0) {
1072 1.102 lukem done:
1073 1.147 lukem warn("Can't seek to restart `%s'", local);
1074 1.78 lukem goto cleanuprecv;
1075 1.1 cgd }
1076 1.1 cgd }
1077 1.1 cgd while ((c = getc(din)) != EOF) {
1078 1.1 cgd if (c == '\n')
1079 1.1 cgd bare_lfs++;
1080 1.1 cgd while (c == '\r') {
1081 1.149 lukem while (hash_interval && bytes >= hashbytes) {
1082 1.35 lukem (void)putc('#', ttyout);
1083 1.35 lukem (void)fflush(ttyout);
1084 1.14 lukem hashbytes += mark;
1085 1.1 cgd }
1086 1.1 cgd bytes++;
1087 1.1 cgd if ((c = getc(din)) != '\n' || tcrflag) {
1088 1.1 cgd if (ferror(fout))
1089 1.1 cgd goto break2;
1090 1.23 lukem (void)putc('\r', fout);
1091 1.1 cgd if (c == '\0') {
1092 1.1 cgd bytes++;
1093 1.1 cgd goto contin2;
1094 1.1 cgd }
1095 1.1 cgd if (c == EOF)
1096 1.1 cgd goto contin2;
1097 1.1 cgd }
1098 1.1 cgd }
1099 1.23 lukem (void)putc(c, fout);
1100 1.1 cgd bytes++;
1101 1.1 cgd contin2: ;
1102 1.1 cgd }
1103 1.114 lukem break2:
1104 1.149 lukem if (hash_interval) {
1105 1.1 cgd if (bytes < hashbytes)
1106 1.35 lukem (void)putc('#', ttyout);
1107 1.35 lukem (void)putc('\n', ttyout);
1108 1.1 cgd }
1109 1.1 cgd if (ferror(din)) {
1110 1.1 cgd if (errno != EPIPE)
1111 1.147 lukem warn("Reading from network");
1112 1.1 cgd bytes = -1;
1113 1.1 cgd }
1114 1.1 cgd if (ferror(fout))
1115 1.147 lukem warn("Writing `%s'", local);
1116 1.1 cgd break;
1117 1.1 cgd }
1118 1.78 lukem
1119 1.22 lukem progressmeter(1);
1120 1.78 lukem if (closefunc != NULL) {
1121 1.1 cgd (*closefunc)(fout);
1122 1.78 lukem fout = NULL;
1123 1.78 lukem }
1124 1.79 lukem (void)fclose(din);
1125 1.79 lukem din = NULL;
1126 1.23 lukem (void)getreply(0);
1127 1.43 lukem if (bare_lfs) {
1128 1.43 lukem fprintf(ttyout,
1129 1.43 lukem "WARNING! %d bare linefeeds received in ASCII mode.\n",
1130 1.43 lukem bare_lfs);
1131 1.43 lukem fputs("File may not have transferred correctly.\n", ttyout);
1132 1.43 lukem }
1133 1.19 lukem if (bytes >= 0 && is_retr) {
1134 1.19 lukem if (bytes > 0)
1135 1.19 lukem ptransfer(0);
1136 1.15 lukem if (preserve && (closefunc == fclose)) {
1137 1.19 lukem mtime = remotemodtime(remote, 0);
1138 1.15 lukem if (mtime != -1) {
1139 1.31 lukem (void)gettimeofday(&tval[0], NULL);
1140 1.16 lukem tval[1].tv_sec = mtime;
1141 1.16 lukem tval[1].tv_usec = 0;
1142 1.16 lukem if (utimes(local, tval) == -1) {
1143 1.35 lukem fprintf(ttyout,
1144 1.23 lukem "Can't change modification time on %s to %s",
1145 1.151 lukem local,
1146 1.151 lukem rfc2822time(localtime(&mtime)));
1147 1.15 lukem }
1148 1.15 lukem }
1149 1.15 lukem }
1150 1.15 lukem }
1151 1.78 lukem goto cleanuprecv;
1152 1.23 lukem
1153 1.102 lukem abort:
1154 1.78 lukem /*
1155 1.150 lukem * abort using RFC0959 recommended IP,SYNC sequence
1156 1.78 lukem */
1157 1.82 lukem if (! sigsetjmp(xferabort, 1)) {
1158 1.82 lukem /* this is the first call */
1159 1.82 lukem (void)xsignal(SIGINT, abort_squared);
1160 1.82 lukem if (!cpend) {
1161 1.82 lukem code = -1;
1162 1.82 lukem goto cleanuprecv;
1163 1.82 lukem }
1164 1.82 lukem abort_remote(din);
1165 1.78 lukem }
1166 1.80 lukem code = -1;
1167 1.78 lukem if (bytes > 0)
1168 1.78 lukem ptransfer(0);
1169 1.1 cgd
1170 1.102 lukem cleanuprecv:
1171 1.81 lukem if (oldintr)
1172 1.81 lukem (void)xsignal(SIGINT, oldintr);
1173 1.81 lukem if (oldintp)
1174 1.81 lukem (void)xsignal(SIGPIPE, oldintp);
1175 1.80 lukem if (data >= 0) {
1176 1.80 lukem (void)close(data);
1177 1.80 lukem data = -1;
1178 1.80 lukem }
1179 1.78 lukem if (closefunc != NULL && fout != NULL)
1180 1.78 lukem (*closefunc)(fout);
1181 1.78 lukem if (din)
1182 1.78 lukem (void)fclose(din);
1183 1.78 lukem progress = oprogress;
1184 1.78 lukem preserve = opreserve;
1185 1.78 lukem bytes = 0;
1186 1.1 cgd }
1187 1.1 cgd
1188 1.1 cgd /*
1189 1.1 cgd * Need to start a listen on the data channel before we send the command,
1190 1.1 cgd * otherwise the server's connect may fail.
1191 1.1 cgd */
1192 1.6 cgd int
1193 1.95 lukem initconn(void)
1194 1.1 cgd {
1195 1.6 cgd char *p, *a;
1196 1.132 lukem int result, tmpno = 0;
1197 1.1 cgd int on = 1;
1198 1.48 itojun int error;
1199 1.133 lukem unsigned int addr[16], port[2];
1200 1.133 lukem unsigned int af, hal, pal;
1201 1.132 lukem socklen_t len;
1202 1.158 lukem const char *pasvcmd = NULL;
1203 1.144 lukem int overbose;
1204 1.8 cgd
1205 1.62 lukem #ifdef INET6
1206 1.135 christos #ifndef NO_DEBUG
1207 1.137 christos if (myctladdr.su_family == AF_INET6 && ftp_debug &&
1208 1.104 lukem (IN6_IS_ADDR_LINKLOCAL(&myctladdr.si_su.su_sin6.sin6_addr) ||
1209 1.104 lukem IN6_IS_ADDR_SITELOCAL(&myctladdr.si_su.su_sin6.sin6_addr))) {
1210 1.147 lukem warnx("Use of scoped addresses can be troublesome");
1211 1.59 itojun }
1212 1.62 lukem #endif
1213 1.135 christos #endif
1214 1.147 lukem
1215 1.102 lukem reinit:
1216 1.8 cgd if (passivemode) {
1217 1.48 itojun data_addr = myctladdr;
1218 1.48 itojun data = socket(data_addr.su_family, SOCK_STREAM, 0);
1219 1.8 cgd if (data < 0) {
1220 1.147 lukem warn("Can't create socket for data connection");
1221 1.21 lukem return (1);
1222 1.8 cgd }
1223 1.8 cgd if ((options & SO_DEBUG) &&
1224 1.130 lukem setsockopt(data, SOL_SOCKET, SO_DEBUG,
1225 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1226 1.135 christos DWARN("setsockopt %s (ignored)", "SO_DEBUG");
1227 1.130 lukem }
1228 1.54 itojun result = COMPLETE + 1;
1229 1.48 itojun switch (data_addr.su_family) {
1230 1.48 itojun case AF_INET:
1231 1.74 lukem if (epsv4 && !epsv4bad) {
1232 1.128 lukem pasvcmd = "EPSV";
1233 1.144 lukem overbose = verbose;
1234 1.144 lukem if (ftp_debug == 0)
1235 1.144 lukem verbose = -1;
1236 1.110 is result = command("EPSV");
1237 1.144 lukem verbose = overbose;
1238 1.148 lukem if (verbose > 0 &&
1239 1.144 lukem (result == COMPLETE || !connected))
1240 1.144 lukem fprintf(ttyout, "%s\n", reply_string);
1241 1.85 lukem if (!connected)
1242 1.85 lukem return (1);
1243 1.55 itojun /*
1244 1.55 itojun * this code is to be friendly with broken
1245 1.55 itojun * BSDI ftpd
1246 1.55 itojun */
1247 1.56 itojun if (code / 10 == 22 && code != 229) {
1248 1.55 itojun fputs(
1249 1.55 itojun "wrong server: return code must be 229\n",
1250 1.55 itojun ttyout);
1251 1.55 itojun result = COMPLETE + 1;
1252 1.55 itojun }
1253 1.74 lukem if (result != COMPLETE) {
1254 1.74 lukem epsv4bad = 1;
1255 1.135 christos DPRINTF("disabling epsv4 for this "
1256 1.135 christos "connection\n");
1257 1.74 lukem }
1258 1.55 itojun }
1259 1.85 lukem if (result != COMPLETE) {
1260 1.128 lukem pasvcmd = "PASV";
1261 1.110 is result = command("PASV");
1262 1.85 lukem if (!connected)
1263 1.85 lukem return (1);
1264 1.85 lukem }
1265 1.48 itojun break;
1266 1.62 lukem #ifdef INET6
1267 1.48 itojun case AF_INET6:
1268 1.156 skd if (epsv6 && !epsv6bad) {
1269 1.156 skd pasvcmd = "EPSV";
1270 1.156 skd overbose = verbose;
1271 1.156 skd if (ftp_debug == 0)
1272 1.156 skd verbose = -1;
1273 1.156 skd result = command("EPSV");
1274 1.156 skd verbose = overbose;
1275 1.156 skd if (verbose > 0 &&
1276 1.156 skd (result == COMPLETE || !connected))
1277 1.156 skd fprintf(ttyout, "%s\n", reply_string);
1278 1.156 skd if (!connected)
1279 1.156 skd return (1);
1280 1.156 skd /*
1281 1.156 skd * this code is to be friendly with
1282 1.156 skd * broken BSDI ftpd
1283 1.156 skd */
1284 1.156 skd if (code / 10 == 22 && code != 229) {
1285 1.156 skd fputs(
1286 1.156 skd "wrong server: return code must be 229\n",
1287 1.156 skd ttyout);
1288 1.156 skd result = COMPLETE + 1;
1289 1.156 skd }
1290 1.156 skd if (result != COMPLETE) {
1291 1.156 skd epsv6bad = 1;
1292 1.156 skd DPRINTF("disabling epsv6 for this "
1293 1.156 skd "connection\n");
1294 1.156 skd }
1295 1.55 itojun }
1296 1.110 is if (result != COMPLETE) {
1297 1.110 is pasvcmd = "LPSV";
1298 1.110 is result = command("LPSV");
1299 1.110 is }
1300 1.85 lukem if (!connected)
1301 1.85 lukem return (1);
1302 1.48 itojun break;
1303 1.62 lukem #endif
1304 1.48 itojun default:
1305 1.57 itojun result = COMPLETE + 1;
1306 1.54 itojun break;
1307 1.48 itojun }
1308 1.48 itojun if (result != COMPLETE) {
1309 1.35 lukem if (activefallback) {
1310 1.35 lukem (void)close(data);
1311 1.35 lukem data = -1;
1312 1.35 lukem passivemode = 0;
1313 1.85 lukem #if 0
1314 1.35 lukem activefallback = 0;
1315 1.85 lukem #endif
1316 1.35 lukem goto reinit;
1317 1.35 lukem }
1318 1.35 lukem fputs("Passive mode refused.\n", ttyout);
1319 1.8 cgd goto bad;
1320 1.8 cgd }
1321 1.8 cgd
1322 1.85 lukem #define pack2(var, off) \
1323 1.48 itojun (((var[(off) + 0] & 0xff) << 8) | ((var[(off) + 1] & 0xff) << 0))
1324 1.85 lukem #define pack4(var, off) \
1325 1.48 itojun (((var[(off) + 0] & 0xff) << 24) | ((var[(off) + 1] & 0xff) << 16) | \
1326 1.48 itojun ((var[(off) + 2] & 0xff) << 8) | ((var[(off) + 3] & 0xff) << 0))
1327 1.100 lukem #define UC(b) (((int)b)&0xff)
1328 1.48 itojun
1329 1.8 cgd /*
1330 1.48 itojun * What we've got at this point is a string of comma separated
1331 1.48 itojun * one-byte unsigned integer values, separated by commas.
1332 1.8 cgd */
1333 1.55 itojun if (strcmp(pasvcmd, "PASV") == 0) {
1334 1.55 itojun if (data_addr.su_family != AF_INET) {
1335 1.55 itojun fputs(
1336 1.105 lukem "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1337 1.55 itojun error = 1;
1338 1.55 itojun goto bad;
1339 1.55 itojun }
1340 1.56 itojun if (code / 10 == 22 && code != 227) {
1341 1.55 itojun fputs("wrong server: return code must be 227\n",
1342 1.55 itojun ttyout);
1343 1.55 itojun error = 1;
1344 1.55 itojun goto bad;
1345 1.55 itojun }
1346 1.55 itojun error = sscanf(pasv, "%u,%u,%u,%u,%u,%u",
1347 1.55 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1348 1.55 itojun &port[0], &port[1]);
1349 1.55 itojun if (error != 6) {
1350 1.55 itojun fputs(
1351 1.55 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1352 1.55 itojun error = 1;
1353 1.55 itojun goto bad;
1354 1.55 itojun }
1355 1.55 itojun error = 0;
1356 1.55 itojun memset(&data_addr, 0, sizeof(data_addr));
1357 1.55 itojun data_addr.su_family = AF_INET;
1358 1.55 itojun data_addr.su_len = sizeof(struct sockaddr_in);
1359 1.104 lukem data_addr.si_su.su_sin.sin_addr.s_addr =
1360 1.104 lukem htonl(pack4(addr, 0));
1361 1.55 itojun data_addr.su_port = htons(pack2(port, 0));
1362 1.55 itojun } else if (strcmp(pasvcmd, "LPSV") == 0) {
1363 1.56 itojun if (code / 10 == 22 && code != 228) {
1364 1.55 itojun fputs("wrong server: return code must be 228\n",
1365 1.55 itojun ttyout);
1366 1.55 itojun error = 1;
1367 1.55 itojun goto bad;
1368 1.55 itojun }
1369 1.48 itojun switch (data_addr.su_family) {
1370 1.48 itojun case AF_INET:
1371 1.55 itojun error = sscanf(pasv,
1372 1.55 itojun "%u,%u,%u,%u,%u,%u,%u,%u,%u",
1373 1.57 itojun &af, &hal,
1374 1.55 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1375 1.55 itojun &pal, &port[0], &port[1]);
1376 1.57 itojun if (error != 9) {
1377 1.55 itojun fputs(
1378 1.57 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1379 1.55 itojun error = 1;
1380 1.55 itojun goto bad;
1381 1.55 itojun }
1382 1.57 itojun if (af != 4 || hal != 4 || pal != 2) {
1383 1.48 itojun fputs(
1384 1.57 itojun "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1385 1.48 itojun error = 1;
1386 1.48 itojun goto bad;
1387 1.48 itojun }
1388 1.57 itojun
1389 1.48 itojun error = 0;
1390 1.48 itojun memset(&data_addr, 0, sizeof(data_addr));
1391 1.48 itojun data_addr.su_family = AF_INET;
1392 1.48 itojun data_addr.su_len = sizeof(struct sockaddr_in);
1393 1.104 lukem data_addr.si_su.su_sin.sin_addr.s_addr =
1394 1.104 lukem htonl(pack4(addr, 0));
1395 1.48 itojun data_addr.su_port = htons(pack2(port, 0));
1396 1.48 itojun break;
1397 1.62 lukem #ifdef INET6
1398 1.48 itojun case AF_INET6:
1399 1.48 itojun error = sscanf(pasv,
1400 1.48 itojun "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u",
1401 1.48 itojun &af, &hal,
1402 1.48 itojun &addr[0], &addr[1], &addr[2], &addr[3],
1403 1.48 itojun &addr[4], &addr[5], &addr[6], &addr[7],
1404 1.48 itojun &addr[8], &addr[9], &addr[10],
1405 1.48 itojun &addr[11], &addr[12], &addr[13],
1406 1.48 itojun &addr[14], &addr[15],
1407 1.48 itojun &pal, &port[0], &port[1]);
1408 1.57 itojun if (error != 21) {
1409 1.48 itojun fputs(
1410 1.57 itojun "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1411 1.48 itojun error = 1;
1412 1.48 itojun goto bad;
1413 1.48 itojun }
1414 1.57 itojun if (af != 6 || hal != 16 || pal != 2) {
1415 1.48 itojun fputs(
1416 1.57 itojun "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1417 1.48 itojun error = 1;
1418 1.48 itojun goto bad;
1419 1.48 itojun }
1420 1.8 cgd
1421 1.48 itojun error = 0;
1422 1.48 itojun memset(&data_addr, 0, sizeof(data_addr));
1423 1.48 itojun data_addr.su_family = AF_INET6;
1424 1.48 itojun data_addr.su_len = sizeof(struct sockaddr_in6);
1425 1.60 itojun {
1426 1.158 lukem size_t i;
1427 1.100 lukem for (i = 0; i < sizeof(struct in6_addr); i++) {
1428 1.104 lukem data_addr.si_su.su_sin6.sin6_addr.s6_addr[i] =
1429 1.100 lukem UC(addr[i]);
1430 1.100 lukem }
1431 1.60 itojun }
1432 1.48 itojun data_addr.su_port = htons(pack2(port, 0));
1433 1.48 itojun break;
1434 1.62 lukem #endif
1435 1.48 itojun default:
1436 1.48 itojun error = 1;
1437 1.48 itojun }
1438 1.48 itojun } else if (strcmp(pasvcmd, "EPSV") == 0) {
1439 1.48 itojun char delim[4];
1440 1.48 itojun
1441 1.48 itojun port[0] = 0;
1442 1.56 itojun if (code / 10 == 22 && code != 229) {
1443 1.55 itojun fputs("wrong server: return code must be 229\n",
1444 1.55 itojun ttyout);
1445 1.55 itojun error = 1;
1446 1.55 itojun goto bad;
1447 1.55 itojun }
1448 1.48 itojun if (sscanf(pasv, "%c%c%c%d%c", &delim[0],
1449 1.48 itojun &delim[1], &delim[2], &port[1],
1450 1.48 itojun &delim[3]) != 5) {
1451 1.57 itojun fputs("parse error!\n", ttyout);
1452 1.57 itojun error = 1;
1453 1.48 itojun goto bad;
1454 1.48 itojun }
1455 1.48 itojun if (delim[0] != delim[1] || delim[0] != delim[2]
1456 1.48 itojun || delim[0] != delim[3]) {
1457 1.57 itojun fputs("parse error!\n", ttyout);
1458 1.57 itojun error = 1;
1459 1.48 itojun goto bad;
1460 1.48 itojun }
1461 1.48 itojun data_addr = hisctladdr;
1462 1.48 itojun data_addr.su_port = htons(port[1]);
1463 1.48 itojun } else
1464 1.8 cgd goto bad;
1465 1.8 cgd
1466 1.146 lukem if (ftp_connect(data, (struct sockaddr *)&data_addr.si_su,
1467 1.146 lukem data_addr.su_len) < 0) {
1468 1.39 lukem if (activefallback) {
1469 1.39 lukem (void)close(data);
1470 1.39 lukem data = -1;
1471 1.39 lukem passivemode = 0;
1472 1.85 lukem #if 0
1473 1.39 lukem activefallback = 0;
1474 1.85 lukem #endif
1475 1.39 lukem goto reinit;
1476 1.39 lukem }
1477 1.8 cgd goto bad;
1478 1.8 cgd }
1479 1.92 lukem #ifdef IPTOS_THROUGHPUT
1480 1.48 itojun if (data_addr.su_family == AF_INET) {
1481 1.48 itojun on = IPTOS_THROUGHPUT;
1482 1.130 lukem if (setsockopt(data, IPPROTO_IP, IP_TOS,
1483 1.131 lukem (void *)&on, sizeof(on)) == -1) {
1484 1.135 christos DWARN("setsockopt %s (ignored)",
1485 1.135 christos "IPTOS_THROUGHPUT");
1486 1.130 lukem }
1487 1.48 itojun }
1488 1.92 lukem #endif
1489 1.21 lukem return (0);
1490 1.8 cgd }
1491 1.1 cgd
1492 1.102 lukem noport:
1493 1.1 cgd data_addr = myctladdr;
1494 1.1 cgd if (sendport)
1495 1.48 itojun data_addr.su_port = 0; /* let system pick one */
1496 1.1 cgd if (data != -1)
1497 1.23 lukem (void)close(data);
1498 1.48 itojun data = socket(data_addr.su_family, SOCK_STREAM, 0);
1499 1.1 cgd if (data < 0) {
1500 1.147 lukem warn("Can't create socket for data connection");
1501 1.1 cgd if (tmpno)
1502 1.1 cgd sendport = 1;
1503 1.1 cgd return (1);
1504 1.1 cgd }
1505 1.1 cgd if (!sendport)
1506 1.130 lukem if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR,
1507 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1508 1.147 lukem warn("Can't set SO_REUSEADDR on data connection");
1509 1.1 cgd goto bad;
1510 1.1 cgd }
1511 1.104 lukem if (bind(data, (struct sockaddr *)&data_addr.si_su,
1512 1.104 lukem data_addr.su_len) < 0) {
1513 1.147 lukem warn("Can't bind for data connection");
1514 1.1 cgd goto bad;
1515 1.1 cgd }
1516 1.130 lukem if ((options & SO_DEBUG) &&
1517 1.130 lukem setsockopt(data, SOL_SOCKET, SO_DEBUG,
1518 1.130 lukem (void *)&on, sizeof(on)) == -1) {
1519 1.135 christos DWARN("setsockopt %s (ignored)", "SO_DEBUG");
1520 1.130 lukem }
1521 1.105 lukem len = sizeof(data_addr.si_su);
1522 1.105 lukem memset((char *)&data_addr, 0, sizeof (data_addr));
1523 1.132 lukem if (getsockname(data, (struct sockaddr *)&data_addr.si_su, &len) == -1) {
1524 1.147 lukem warn("Can't determine my address of data connection");
1525 1.1 cgd goto bad;
1526 1.1 cgd }
1527 1.105 lukem data_addr.su_len = len;
1528 1.136 christos if (ftp_listen(data, 1) < 0)
1529 1.147 lukem warn("Can't listen to data connection");
1530 1.48 itojun
1531 1.1 cgd if (sendport) {
1532 1.112 itojun char hname[NI_MAXHOST], sname[NI_MAXSERV];
1533 1.112 itojun struct sockinet tmp;
1534 1.48 itojun
1535 1.48 itojun switch (data_addr.su_family) {
1536 1.48 itojun case AF_INET:
1537 1.74 lukem if (!epsv4 || epsv4bad) {
1538 1.54 itojun result = COMPLETE + 1;
1539 1.54 itojun break;
1540 1.54 itojun }
1541 1.54 itojun /* FALLTHROUGH */
1542 1.58 christos #ifdef INET6
1543 1.48 itojun case AF_INET6:
1544 1.156 skd if (!epsv6 || epsv6bad) {
1545 1.156 skd result = COMPLETE + 1;
1546 1.156 skd break;
1547 1.156 skd }
1548 1.111 itojun #endif
1549 1.48 itojun af = (data_addr.su_family == AF_INET) ? 1 : 2;
1550 1.112 itojun tmp = data_addr;
1551 1.113 itojun #ifdef INET6
1552 1.112 itojun if (tmp.su_family == AF_INET6)
1553 1.112 itojun tmp.si_su.su_sin6.sin6_scope_id = 0;
1554 1.113 itojun #endif
1555 1.112 itojun if (getnameinfo((struct sockaddr *)&tmp.si_su,
1556 1.112 itojun tmp.su_len, hname, sizeof(hname), sname,
1557 1.112 itojun sizeof(sname), NI_NUMERICHOST | NI_NUMERICSERV)) {
1558 1.48 itojun result = ERROR;
1559 1.48 itojun } else {
1560 1.144 lukem overbose = verbose;
1561 1.144 lukem if (ftp_debug == 0)
1562 1.144 lukem verbose = -1;
1563 1.157 lukem result = command("EPRT |%u|%s|%s|", af, hname,
1564 1.112 itojun sname);
1565 1.144 lukem verbose = overbose;
1566 1.148 lukem if (verbose > 0 &&
1567 1.144 lukem (result == COMPLETE || !connected))
1568 1.144 lukem fprintf(ttyout, "%s\n", reply_string);
1569 1.85 lukem if (!connected)
1570 1.85 lukem return (1);
1571 1.74 lukem if (result != COMPLETE) {
1572 1.74 lukem epsv4bad = 1;
1573 1.135 christos DPRINTF("disabling epsv4 for this "
1574 1.135 christos "connection\n");
1575 1.74 lukem }
1576 1.48 itojun }
1577 1.48 itojun break;
1578 1.48 itojun default:
1579 1.48 itojun result = COMPLETE + 1;
1580 1.48 itojun break;
1581 1.48 itojun }
1582 1.48 itojun if (result == COMPLETE)
1583 1.48 itojun goto skip_port;
1584 1.48 itojun
1585 1.48 itojun switch (data_addr.su_family) {
1586 1.48 itojun case AF_INET:
1587 1.104 lukem a = (char *)&data_addr.si_su.su_sin.sin_addr;
1588 1.48 itojun p = (char *)&data_addr.su_port;
1589 1.48 itojun result = command("PORT %d,%d,%d,%d,%d,%d",
1590 1.48 itojun UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
1591 1.48 itojun UC(p[0]), UC(p[1]));
1592 1.48 itojun break;
1593 1.58 christos #ifdef INET6
1594 1.48 itojun case AF_INET6:
1595 1.104 lukem a = (char *)&data_addr.si_su.su_sin6.sin6_addr;
1596 1.48 itojun p = (char *)&data_addr.su_port;
1597 1.48 itojun result = command(
1598 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",
1599 1.48 itojun 6, 16,
1600 1.48 itojun UC(a[0]),UC(a[1]),UC(a[2]),UC(a[3]),
1601 1.48 itojun UC(a[4]),UC(a[5]),UC(a[6]),UC(a[7]),
1602 1.48 itojun UC(a[8]),UC(a[9]),UC(a[10]),UC(a[11]),
1603 1.48 itojun UC(a[12]),UC(a[13]),UC(a[14]),UC(a[15]),
1604 1.48 itojun 2, UC(p[0]), UC(p[1]));
1605 1.48 itojun break;
1606 1.58 christos #endif
1607 1.48 itojun default:
1608 1.48 itojun result = COMPLETE + 1; /* xxx */
1609 1.48 itojun }
1610 1.85 lukem if (!connected)
1611 1.85 lukem return (1);
1612 1.48 itojun skip_port:
1613 1.128 lukem
1614 1.1 cgd if (result == ERROR && sendport == -1) {
1615 1.1 cgd sendport = 0;
1616 1.1 cgd tmpno = 1;
1617 1.1 cgd goto noport;
1618 1.1 cgd }
1619 1.1 cgd return (result != COMPLETE);
1620 1.1 cgd }
1621 1.1 cgd if (tmpno)
1622 1.1 cgd sendport = 1;
1623 1.92 lukem #ifdef IPTOS_THROUGHPUT
1624 1.48 itojun if (data_addr.su_family == AF_INET) {
1625 1.48 itojun on = IPTOS_THROUGHPUT;
1626 1.130 lukem if (setsockopt(data, IPPROTO_IP, IP_TOS,
1627 1.159 jld (void *)&on, sizeof(on)) == -1) {
1628 1.135 christos DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT");
1629 1.159 jld }
1630 1.48 itojun }
1631 1.92 lukem #endif
1632 1.1 cgd return (0);
1633 1.102 lukem bad:
1634 1.127 lukem (void)close(data);
1635 1.127 lukem data = -1;
1636 1.1 cgd if (tmpno)
1637 1.1 cgd sendport = 1;
1638 1.1 cgd return (1);
1639 1.1 cgd }
1640 1.1 cgd
1641 1.1 cgd FILE *
1642 1.95 lukem dataconn(const char *lmode)
1643 1.1 cgd {
1644 1.127 lukem struct sockinet from;
1645 1.132 lukem int s, flags, rv, timeout;
1646 1.127 lukem struct timeval endtime, now, td;
1647 1.127 lukem struct pollfd pfd[1];
1648 1.132 lukem socklen_t fromlen;
1649 1.8 cgd
1650 1.127 lukem if (passivemode) /* passive data connection */
1651 1.8 cgd return (fdopen(data, lmode));
1652 1.1 cgd
1653 1.127 lukem /* active mode data connection */
1654 1.127 lukem
1655 1.127 lukem if ((flags = fcntl(data, F_GETFL, 0)) == -1)
1656 1.127 lukem goto dataconn_failed; /* get current socket flags */
1657 1.127 lukem if (fcntl(data, F_SETFL, flags | O_NONBLOCK) == -1)
1658 1.127 lukem goto dataconn_failed; /* set non-blocking connect */
1659 1.127 lukem
1660 1.127 lukem /* NOTE: we now must restore socket flags on successful exit */
1661 1.127 lukem
1662 1.127 lukem /* limit time waiting on listening socket */
1663 1.127 lukem pfd[0].fd = data;
1664 1.127 lukem pfd[0].events = POLLIN;
1665 1.127 lukem (void)gettimeofday(&endtime, NULL); /* determine end time */
1666 1.127 lukem endtime.tv_sec += (quit_time > 0) ? quit_time: 60;
1667 1.127 lukem /* without -q, default to 60s */
1668 1.127 lukem do {
1669 1.127 lukem (void)gettimeofday(&now, NULL);
1670 1.127 lukem timersub(&endtime, &now, &td);
1671 1.127 lukem timeout = td.tv_sec * 1000 + td.tv_usec/1000;
1672 1.127 lukem if (timeout < 0)
1673 1.127 lukem timeout = 0;
1674 1.136 christos rv = ftp_poll(pfd, 1, timeout);
1675 1.127 lukem } while (rv == -1 && errno == EINTR); /* loop until poll ! EINTR */
1676 1.127 lukem if (rv == -1) {
1677 1.147 lukem warn("Can't poll waiting before accept");
1678 1.127 lukem goto dataconn_failed;
1679 1.127 lukem }
1680 1.127 lukem if (rv == 0) {
1681 1.147 lukem warnx("Poll timeout waiting before accept");
1682 1.127 lukem goto dataconn_failed;
1683 1.127 lukem }
1684 1.127 lukem
1685 1.127 lukem /* (non-blocking) accept the connection */
1686 1.127 lukem fromlen = myctladdr.su_len;
1687 1.127 lukem do {
1688 1.127 lukem s = accept(data, (struct sockaddr *) &from.si_su, &fromlen);
1689 1.127 lukem } while (s == -1 && errno == EINTR); /* loop until accept ! EINTR */
1690 1.127 lukem if (s == -1) {
1691 1.147 lukem warn("Can't accept data connection");
1692 1.127 lukem goto dataconn_failed;
1693 1.1 cgd }
1694 1.127 lukem
1695 1.23 lukem (void)close(data);
1696 1.1 cgd data = s;
1697 1.127 lukem if (fcntl(data, F_SETFL, flags) == -1) /* restore socket flags */
1698 1.127 lukem goto dataconn_failed;
1699 1.127 lukem
1700 1.92 lukem #ifdef IPTOS_THROUGHPUT
1701 1.48 itojun if (from.su_family == AF_INET) {
1702 1.48 itojun int tos = IPTOS_THROUGHPUT;
1703 1.130 lukem if (setsockopt(s, IPPROTO_IP, IP_TOS,
1704 1.131 lukem (void *)&tos, sizeof(tos)) == -1) {
1705 1.135 christos DWARN("setsockopt %s (ignored)", "IPTOS_THROUGHPUT");
1706 1.48 itojun }
1707 1.48 itojun }
1708 1.92 lukem #endif
1709 1.1 cgd return (fdopen(data, lmode));
1710 1.128 lukem
1711 1.127 lukem dataconn_failed:
1712 1.127 lukem (void)close(data);
1713 1.127 lukem data = -1;
1714 1.127 lukem return (NULL);
1715 1.14 lukem }
1716 1.14 lukem
1717 1.14 lukem void
1718 1.95 lukem psabort(int notused)
1719 1.1 cgd {
1720 1.81 lukem int oerrno = errno;
1721 1.1 cgd
1722 1.126 lukem sigint_raised = 1;
1723 1.22 lukem alarmtimer(0);
1724 1.1 cgd abrtflag++;
1725 1.81 lukem errno = oerrno;
1726 1.1 cgd }
1727 1.1 cgd
1728 1.6 cgd void
1729 1.95 lukem pswitch(int flag)
1730 1.1 cgd {
1731 1.90 lukem sigfunc oldintr;
1732 1.1 cgd static struct comvars {
1733 1.1 cgd int connect;
1734 1.1 cgd char name[MAXHOSTNAMELEN];
1735 1.104 lukem struct sockinet mctl;
1736 1.104 lukem struct sockinet hctl;
1737 1.1 cgd FILE *in;
1738 1.1 cgd FILE *out;
1739 1.1 cgd int tpe;
1740 1.1 cgd int curtpe;
1741 1.1 cgd int cpnd;
1742 1.1 cgd int sunqe;
1743 1.1 cgd int runqe;
1744 1.1 cgd int mcse;
1745 1.1 cgd int ntflg;
1746 1.1 cgd char nti[17];
1747 1.1 cgd char nto[17];
1748 1.1 cgd int mapflg;
1749 1.1 cgd char mi[MAXPATHLEN];
1750 1.1 cgd char mo[MAXPATHLEN];
1751 1.1 cgd } proxstruct, tmpstruct;
1752 1.1 cgd struct comvars *ip, *op;
1753 1.1 cgd
1754 1.1 cgd abrtflag = 0;
1755 1.67 lukem oldintr = xsignal(SIGINT, psabort);
1756 1.1 cgd if (flag) {
1757 1.1 cgd if (proxy)
1758 1.1 cgd return;
1759 1.1 cgd ip = &tmpstruct;
1760 1.1 cgd op = &proxstruct;
1761 1.1 cgd proxy++;
1762 1.1 cgd } else {
1763 1.1 cgd if (!proxy)
1764 1.1 cgd return;
1765 1.1 cgd ip = &proxstruct;
1766 1.1 cgd op = &tmpstruct;
1767 1.1 cgd proxy = 0;
1768 1.1 cgd }
1769 1.1 cgd ip->connect = connected;
1770 1.1 cgd connected = op->connect;
1771 1.68 lukem if (hostname)
1772 1.68 lukem (void)strlcpy(ip->name, hostname, sizeof(ip->name));
1773 1.68 lukem else
1774 1.23 lukem ip->name[0] = '\0';
1775 1.1 cgd hostname = op->name;
1776 1.1 cgd ip->hctl = hisctladdr;
1777 1.1 cgd hisctladdr = op->hctl;
1778 1.1 cgd ip->mctl = myctladdr;
1779 1.1 cgd myctladdr = op->mctl;
1780 1.1 cgd ip->in = cin;
1781 1.1 cgd cin = op->in;
1782 1.1 cgd ip->out = cout;
1783 1.1 cgd cout = op->out;
1784 1.1 cgd ip->tpe = type;
1785 1.1 cgd type = op->tpe;
1786 1.1 cgd ip->curtpe = curtype;
1787 1.1 cgd curtype = op->curtpe;
1788 1.1 cgd ip->cpnd = cpend;
1789 1.1 cgd cpend = op->cpnd;
1790 1.1 cgd ip->sunqe = sunique;
1791 1.1 cgd sunique = op->sunqe;
1792 1.1 cgd ip->runqe = runique;
1793 1.1 cgd runique = op->runqe;
1794 1.1 cgd ip->mcse = mcase;
1795 1.1 cgd mcase = op->mcse;
1796 1.1 cgd ip->ntflg = ntflag;
1797 1.1 cgd ntflag = op->ntflg;
1798 1.68 lukem (void)strlcpy(ip->nti, ntin, sizeof(ip->nti));
1799 1.68 lukem (void)strlcpy(ntin, op->nti, sizeof(ntin));
1800 1.68 lukem (void)strlcpy(ip->nto, ntout, sizeof(ip->nto));
1801 1.68 lukem (void)strlcpy(ntout, op->nto, sizeof(ntout));
1802 1.1 cgd ip->mapflg = mapflag;
1803 1.1 cgd mapflag = op->mapflg;
1804 1.68 lukem (void)strlcpy(ip->mi, mapin, sizeof(ip->mi));
1805 1.68 lukem (void)strlcpy(mapin, op->mi, sizeof(mapin));
1806 1.68 lukem (void)strlcpy(ip->mo, mapout, sizeof(ip->mo));
1807 1.68 lukem (void)strlcpy(mapout, op->mo, sizeof(mapout));
1808 1.67 lukem (void)xsignal(SIGINT, oldintr);
1809 1.1 cgd if (abrtflag) {
1810 1.1 cgd abrtflag = 0;
1811 1.1 cgd (*oldintr)(SIGINT);
1812 1.1 cgd }
1813 1.1 cgd }
1814 1.1 cgd
1815 1.1 cgd void
1816 1.95 lukem abortpt(int notused)
1817 1.1 cgd {
1818 1.6 cgd
1819 1.126 lukem sigint_raised = 1;
1820 1.22 lukem alarmtimer(0);
1821 1.84 lukem if (fromatty)
1822 1.84 lukem write(fileno(ttyout), "\n", 1);
1823 1.1 cgd ptabflg++;
1824 1.1 cgd mflag = 0;
1825 1.1 cgd abrtflag = 0;
1826 1.81 lukem siglongjmp(ptabort, 1);
1827 1.1 cgd }
1828 1.1 cgd
1829 1.6 cgd void
1830 1.95 lukem proxtrans(const char *cmd, const char *local, const char *remote)
1831 1.1 cgd {
1832 1.143 christos sigfunc volatile oldintr;
1833 1.26 lukem int prox_type, nfnd;
1834 1.143 christos int volatile secndflag;
1835 1.158 lukem const char *volatile cmd2;
1836 1.26 lukem
1837 1.26 lukem oldintr = NULL;
1838 1.26 lukem secndflag = 0;
1839 1.1 cgd if (strcmp(cmd, "RETR"))
1840 1.1 cgd cmd2 = "RETR";
1841 1.1 cgd else
1842 1.1 cgd cmd2 = runique ? "STOU" : "STOR";
1843 1.1 cgd if ((prox_type = type) == 0) {
1844 1.1 cgd if (unix_server && unix_proxy)
1845 1.1 cgd prox_type = TYPE_I;
1846 1.1 cgd else
1847 1.1 cgd prox_type = TYPE_A;
1848 1.1 cgd }
1849 1.1 cgd if (curtype != prox_type)
1850 1.1 cgd changetype(prox_type, 1);
1851 1.1 cgd if (command("PASV") != COMPLETE) {
1852 1.35 lukem fputs("proxy server does not support third party transfers.\n",
1853 1.35 lukem ttyout);
1854 1.1 cgd return;
1855 1.1 cgd }
1856 1.1 cgd pswitch(0);
1857 1.1 cgd if (!connected) {
1858 1.35 lukem fputs("No primary connection.\n", ttyout);
1859 1.1 cgd pswitch(1);
1860 1.1 cgd code = -1;
1861 1.1 cgd return;
1862 1.1 cgd }
1863 1.1 cgd if (curtype != prox_type)
1864 1.1 cgd changetype(prox_type, 1);
1865 1.1 cgd if (command("PORT %s", pasv) != COMPLETE) {
1866 1.1 cgd pswitch(1);
1867 1.1 cgd return;
1868 1.1 cgd }
1869 1.81 lukem if (sigsetjmp(ptabort, 1))
1870 1.1 cgd goto abort;
1871 1.67 lukem oldintr = xsignal(SIGINT, abortpt);
1872 1.41 lukem if ((restart_point &&
1873 1.107 lukem (command("REST " LLF, (LLT) restart_point) != CONTINUE))
1874 1.103 lukem || (command("%s %s", cmd, remote) != PRELIM)) {
1875 1.67 lukem (void)xsignal(SIGINT, oldintr);
1876 1.1 cgd pswitch(1);
1877 1.1 cgd return;
1878 1.1 cgd }
1879 1.1 cgd sleep(2);
1880 1.1 cgd pswitch(1);
1881 1.1 cgd secndflag++;
1882 1.41 lukem if ((restart_point &&
1883 1.107 lukem (command("REST " LLF, (LLT) restart_point) != CONTINUE))
1884 1.103 lukem || (command("%s %s", cmd2, local) != PRELIM))
1885 1.1 cgd goto abort;
1886 1.1 cgd ptflag++;
1887 1.23 lukem (void)getreply(0);
1888 1.1 cgd pswitch(0);
1889 1.23 lukem (void)getreply(0);
1890 1.67 lukem (void)xsignal(SIGINT, oldintr);
1891 1.1 cgd pswitch(1);
1892 1.1 cgd ptflag = 0;
1893 1.35 lukem fprintf(ttyout, "local: %s remote: %s\n", local, remote);
1894 1.1 cgd return;
1895 1.102 lukem abort:
1896 1.82 lukem if (sigsetjmp(xferabort, 1)) {
1897 1.82 lukem (void)xsignal(SIGINT, oldintr);
1898 1.82 lukem return;
1899 1.82 lukem }
1900 1.82 lukem (void)xsignal(SIGINT, abort_squared);
1901 1.1 cgd ptflag = 0;
1902 1.1 cgd if (strcmp(cmd, "RETR") && !proxy)
1903 1.1 cgd pswitch(1);
1904 1.1 cgd else if (!strcmp(cmd, "RETR") && proxy)
1905 1.1 cgd pswitch(0);
1906 1.1 cgd if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
1907 1.1 cgd if (command("%s %s", cmd2, local) != PRELIM) {
1908 1.1 cgd pswitch(0);
1909 1.1 cgd if (cpend)
1910 1.31 lukem abort_remote(NULL);
1911 1.1 cgd }
1912 1.1 cgd pswitch(1);
1913 1.1 cgd if (ptabflg)
1914 1.1 cgd code = -1;
1915 1.67 lukem (void)xsignal(SIGINT, oldintr);
1916 1.1 cgd return;
1917 1.1 cgd }
1918 1.1 cgd if (cpend)
1919 1.31 lukem abort_remote(NULL);
1920 1.1 cgd pswitch(!proxy);
1921 1.1 cgd if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
1922 1.1 cgd if (command("%s %s", cmd2, local) != PRELIM) {
1923 1.1 cgd pswitch(0);
1924 1.1 cgd if (cpend)
1925 1.31 lukem abort_remote(NULL);
1926 1.1 cgd pswitch(1);
1927 1.1 cgd if (ptabflg)
1928 1.1 cgd code = -1;
1929 1.67 lukem (void)xsignal(SIGINT, oldintr);
1930 1.1 cgd return;
1931 1.1 cgd }
1932 1.1 cgd }
1933 1.1 cgd if (cpend)
1934 1.31 lukem abort_remote(NULL);
1935 1.1 cgd pswitch(!proxy);
1936 1.1 cgd if (cpend) {
1937 1.45 christos if ((nfnd = empty(cin, NULL, 10)) <= 0) {
1938 1.85 lukem if (nfnd < 0)
1939 1.147 lukem warn("Error aborting proxy command");
1940 1.1 cgd if (ptabflg)
1941 1.1 cgd code = -1;
1942 1.85 lukem lostpeer(0);
1943 1.1 cgd }
1944 1.23 lukem (void)getreply(0);
1945 1.23 lukem (void)getreply(0);
1946 1.1 cgd }
1947 1.1 cgd if (proxy)
1948 1.1 cgd pswitch(0);
1949 1.1 cgd pswitch(1);
1950 1.1 cgd if (ptabflg)
1951 1.1 cgd code = -1;
1952 1.67 lukem (void)xsignal(SIGINT, oldintr);
1953 1.1 cgd }
1954 1.1 cgd
1955 1.6 cgd void
1956 1.95 lukem reset(int argc, char *argv[])
1957 1.1 cgd {
1958 1.1 cgd int nfnd = 1;
1959 1.1 cgd
1960 1.85 lukem if (argc == 0 && argv != NULL) {
1961 1.135 christos UPRINTF("usage: %s\n", argv[0]);
1962 1.85 lukem code = -1;
1963 1.85 lukem return;
1964 1.85 lukem }
1965 1.1 cgd while (nfnd > 0) {
1966 1.45 christos if ((nfnd = empty(cin, NULL, 0)) < 0) {
1967 1.147 lukem warn("Error resetting connection");
1968 1.1 cgd code = -1;
1969 1.85 lukem lostpeer(0);
1970 1.85 lukem } else if (nfnd)
1971 1.23 lukem (void)getreply(0);
1972 1.1 cgd }
1973 1.1 cgd }
1974 1.1 cgd
1975 1.1 cgd char *
1976 1.95 lukem gunique(const char *local)
1977 1.1 cgd {
1978 1.1 cgd static char new[MAXPATHLEN];
1979 1.6 cgd char *cp = strrchr(local, '/');
1980 1.68 lukem int d, count=0, len;
1981 1.1 cgd char ext = '1';
1982 1.1 cgd
1983 1.1 cgd if (cp)
1984 1.1 cgd *cp = '\0';
1985 1.28 lukem d = access(cp == local ? "/" : cp ? local : ".", W_OK);
1986 1.1 cgd if (cp)
1987 1.1 cgd *cp = '/';
1988 1.1 cgd if (d < 0) {
1989 1.147 lukem warn("Can't access `%s'", local);
1990 1.31 lukem return (NULL);
1991 1.1 cgd }
1992 1.68 lukem len = strlcpy(new, local, sizeof(new));
1993 1.68 lukem cp = &new[len];
1994 1.128 lukem *cp++ = '.';
1995 1.1 cgd while (!d) {
1996 1.1 cgd if (++count == 100) {
1997 1.35 lukem fputs("runique: can't find unique file name.\n",
1998 1.35 lukem ttyout);
1999 1.31 lukem return (NULL);
2000 1.1 cgd }
2001 1.1 cgd *cp++ = ext;
2002 1.1 cgd *cp = '\0';
2003 1.1 cgd if (ext == '9')
2004 1.1 cgd ext = '0';
2005 1.1 cgd else
2006 1.1 cgd ext++;
2007 1.28 lukem if ((d = access(new, F_OK)) < 0)
2008 1.1 cgd break;
2009 1.1 cgd if (ext != '0')
2010 1.1 cgd cp--;
2011 1.1 cgd else if (*(cp - 2) == '.')
2012 1.1 cgd *(cp - 1) = '1';
2013 1.1 cgd else {
2014 1.1 cgd *(cp - 2) = *(cp - 2) + 1;
2015 1.1 cgd cp--;
2016 1.1 cgd }
2017 1.1 cgd }
2018 1.6 cgd return (new);
2019 1.82 lukem }
2020 1.82 lukem
2021 1.82 lukem /*
2022 1.82 lukem * abort_squared --
2023 1.82 lukem * aborts abort_remote(). lostpeer() is called because if the user is
2024 1.82 lukem * too impatient to wait or there's another problem then ftp really
2025 1.82 lukem * needs to get back to a known state.
2026 1.82 lukem */
2027 1.82 lukem void
2028 1.95 lukem abort_squared(int dummy)
2029 1.82 lukem {
2030 1.82 lukem char msgbuf[100];
2031 1.132 lukem size_t len;
2032 1.82 lukem
2033 1.126 lukem sigint_raised = 1;
2034 1.82 lukem alarmtimer(0);
2035 1.82 lukem len = strlcpy(msgbuf, "\nremote abort aborted; closing connection.\n",
2036 1.82 lukem sizeof(msgbuf));
2037 1.82 lukem write(fileno(ttyout), msgbuf, len);
2038 1.85 lukem lostpeer(0);
2039 1.82 lukem siglongjmp(xferabort, 1);
2040 1.1 cgd }
2041 1.1 cgd
2042 1.6 cgd void
2043 1.95 lukem abort_remote(FILE *din)
2044 1.1 cgd {
2045 1.65 lukem char buf[BUFSIZ];
2046 1.1 cgd int nfnd;
2047 1.1 cgd
2048 1.23 lukem if (cout == NULL) {
2049 1.147 lukem warnx("Lost control connection for abort");
2050 1.23 lukem if (ptabflg)
2051 1.23 lukem code = -1;
2052 1.85 lukem lostpeer(0);
2053 1.23 lukem return;
2054 1.23 lukem }
2055 1.1 cgd /*
2056 1.1 cgd * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
2057 1.1 cgd * after urgent byte rather than before as is protocol now
2058 1.1 cgd */
2059 1.63 lukem buf[0] = IAC;
2060 1.63 lukem buf[1] = IP;
2061 1.63 lukem buf[2] = IAC;
2062 1.1 cgd if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
2063 1.147 lukem warn("Can't send abort message");
2064 1.15 lukem fprintf(cout, "%cABOR\r\n", DM);
2065 1.23 lukem (void)fflush(cout);
2066 1.45 christos if ((nfnd = empty(cin, din, 10)) <= 0) {
2067 1.85 lukem if (nfnd < 0)
2068 1.147 lukem warn("Can't send abort message");
2069 1.1 cgd if (ptabflg)
2070 1.1 cgd code = -1;
2071 1.85 lukem lostpeer(0);
2072 1.1 cgd }
2073 1.45 christos if (din && (nfnd & 2)) {
2074 1.1 cgd while (read(fileno(din), buf, BUFSIZ) > 0)
2075 1.45 christos continue;
2076 1.1 cgd }
2077 1.1 cgd if (getreply(0) == ERROR && code == 552) {
2078 1.1 cgd /* 552 needed for nic style abort */
2079 1.23 lukem (void)getreply(0);
2080 1.1 cgd }
2081 1.23 lukem (void)getreply(0);
2082 1.96 itojun }
2083 1.96 itojun
2084 1.147 lukem /*
2085 1.147 lukem * Ensure that ai->ai_addr is NOT an IPv4 mapped address.
2086 1.147 lukem * IPv4 mapped address complicates too many things in FTP
2087 1.147 lukem * protocol handling, as FTP protocol is defined differently
2088 1.147 lukem * between IPv4 and IPv6.
2089 1.147 lukem *
2090 1.147 lukem * This may not be the best way to handle this situation,
2091 1.147 lukem * since the semantics of IPv4 mapped address is defined in
2092 1.147 lukem * the kernel. There are configurations where we should use
2093 1.147 lukem * IPv4 mapped address as native IPv6 address, not as
2094 1.147 lukem * "an IPv6 address that embeds IPv4 address" (namely, SIIT).
2095 1.147 lukem *
2096 1.147 lukem * More complete solution would be to have an additional
2097 1.147 lukem * getsockopt to grab "real" peername/sockname. "real"
2098 1.147 lukem * peername/sockname will be AF_INET if IPv4 mapped address
2099 1.147 lukem * is used to embed IPv4 address, and will be AF_INET6 if
2100 1.147 lukem * we use it as native. What a mess!
2101 1.147 lukem */
2102 1.96 itojun void
2103 1.96 itojun ai_unmapped(struct addrinfo *ai)
2104 1.96 itojun {
2105 1.98 lukem #ifdef INET6
2106 1.96 itojun struct sockaddr_in6 *sin6;
2107 1.96 itojun struct sockaddr_in sin;
2108 1.132 lukem socklen_t len;
2109 1.96 itojun
2110 1.96 itojun if (ai->ai_family != AF_INET6)
2111 1.96 itojun return;
2112 1.96 itojun if (ai->ai_addrlen != sizeof(struct sockaddr_in6) ||
2113 1.96 itojun sizeof(sin) > ai->ai_addrlen)
2114 1.96 itojun return;
2115 1.96 itojun sin6 = (struct sockaddr_in6 *)ai->ai_addr;
2116 1.96 itojun if (!IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
2117 1.96 itojun return;
2118 1.96 itojun
2119 1.96 itojun memset(&sin, 0, sizeof(sin));
2120 1.96 itojun sin.sin_family = AF_INET;
2121 1.99 lukem len = sizeof(struct sockaddr_in);
2122 1.96 itojun memcpy(&sin.sin_addr, &sin6->sin6_addr.s6_addr[12],
2123 1.96 itojun sizeof(sin.sin_addr));
2124 1.96 itojun sin.sin_port = sin6->sin6_port;
2125 1.96 itojun
2126 1.96 itojun ai->ai_family = AF_INET;
2127 1.153 lukem #if defined(HAVE_STRUCT_SOCKADDR_IN_SIN_LEN)
2128 1.99 lukem sin.sin_len = len;
2129 1.99 lukem #endif
2130 1.99 lukem memcpy(ai->ai_addr, &sin, len);
2131 1.99 lukem ai->ai_addrlen = len;
2132 1.98 lukem #endif
2133 1.1 cgd }
2134 1.135 christos
2135 1.135 christos #ifdef NO_USAGE
2136 1.135 christos void
2137 1.135 christos xusage(void)
2138 1.135 christos {
2139 1.135 christos fputs("Usage error\n", ttyout);
2140 1.135 christos }
2141 1.135 christos #endif
2142