Annotation of src/usr.bin/ftp/ftp.c, Revision 1.70
1.70 ! pyr 1: /* $OpenBSD: ftp.c,v 1.69 2008/04/12 21:20:58 ray Exp $ */
1.22 millert 2: /* $NetBSD: ftp.c,v 1.27 1997/08/18 10:20:23 lukem Exp $ */
1.1 deraadt 3:
4: /*
1.34 itojun 5: * Copyright (C) 1997 and 1998 WIDE Project.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the project nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: /*
1.1 deraadt 34: * Copyright (c) 1985, 1989, 1993, 1994
35: * The Regents of the University of California. All rights reserved.
36: *
37: * Redistribution and use in source and binary forms, with or without
38: * modification, are permitted provided that the following conditions
39: * are met:
40: * 1. Redistributions of source code must retain the above copyright
41: * notice, this list of conditions and the following disclaimer.
42: * 2. Redistributions in binary form must reproduce the above copyright
43: * notice, this list of conditions and the following disclaimer in the
44: * documentation and/or other materials provided with the distribution.
1.53 millert 45: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 46: * may be used to endorse or promote products derived from this software
47: * without specific prior written permission.
48: *
49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59: * SUCH DAMAGE.
60: */
61:
1.55 deraadt 62: #if !defined(lint) && !defined(SMALL)
1.70 ! pyr 63: static const char rcsid[] = "$OpenBSD: ftp.c,v 1.69 2008/04/12 21:20:58 ray Exp $";
1.55 deraadt 64: #endif /* not lint and not SMALL */
1.1 deraadt 65:
1.10 millert 66: #include <sys/types.h>
1.1 deraadt 67: #include <sys/stat.h>
68: #include <sys/socket.h>
69:
70: #include <netinet/in.h>
71: #include <netinet/in_systm.h>
72: #include <netinet/ip.h>
73: #include <arpa/inet.h>
74: #include <arpa/ftp.h>
75: #include <arpa/telnet.h>
76:
77: #include <ctype.h>
78: #include <err.h>
79: #include <errno.h>
80: #include <netdb.h>
1.54 millert 81: #include <poll.h>
82: #include <stdarg.h>
1.1 deraadt 83: #include <stdio.h>
84: #include <stdlib.h>
85: #include <string.h>
86: #include <unistd.h>
1.12 millert 87: #include <utime.h>
1.1 deraadt 88:
89: #include "ftp_var.h"
90:
1.34 itojun 91: union sockunion {
92: struct sockinet {
93: u_char si_len;
94: u_char si_family;
95: u_short si_port;
96: } su_si;
97: struct sockaddr_in su_sin;
98: struct sockaddr_in6 su_sin6;
99: };
100: #define su_len su_si.si_len
101: #define su_family su_si.si_family
102: #define su_port su_si.si_port
103:
104: union sockunion myctladdr, hisctladdr, data_addr;
105:
1.1 deraadt 106: int data = -1;
107: int abrtflag = 0;
108: jmp_buf ptabort;
109: int ptabflg;
110: int ptflag = 0;
111: off_t restart_point = 0;
112:
113:
114: FILE *cin, *cout;
115:
116: char *
1.56 deraadt 117: hookup(char *host, char *port)
1.1 deraadt 118: {
1.57 deraadt 119: int s, tos, error;
1.10 millert 120: static char hostnamebuf[MAXHOSTNAMELEN];
1.34 itojun 121: struct addrinfo hints, *res, *res0;
1.51 itojun 122: char hbuf[NI_MAXHOST];
1.34 itojun 123: char *cause = "unknown";
1.57 deraadt 124: socklen_t namelen;
1.34 itojun 125:
1.36 itojun 126: epsv4bad = 0;
127:
1.34 itojun 128: memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
129: memset(&hints, 0, sizeof(hints));
130: hints.ai_flags = AI_CANONNAME;
1.45 deraadt 131: hints.ai_family = family;
1.34 itojun 132: hints.ai_socktype = SOCK_STREAM;
133: hints.ai_protocol = 0;
134: error = getaddrinfo(host, port, &hints, &res0);
1.35 deraadt 135: if (error == EAI_SERVICE) {
136: /*
137: * If the services file is corrupt/missing, fall back
138: * on our hard-coded defines.
139: */
140: char pbuf[NI_MAXSERV];
141:
142: pbuf[0] = '\0';
143: if (strcmp(port, "ftp") == 0)
144: snprintf(pbuf, sizeof(pbuf), "%d", FTP_PORT);
145: else if (strcmp(port, "ftpgate") == 0)
146: snprintf(pbuf, sizeof(pbuf), "%d", GATE_PORT);
147: else if (strcmp(port, "http") == 0)
148: snprintf(pbuf, sizeof(pbuf), "%d", HTTP_PORT);
1.63 deraadt 149: #ifndef SMALL
150: else if (strcmp(port, "https") == 0)
151: snprintf(pbuf, sizeof(pbuf), "%d", HTTPS_PORT);
152: #endif
1.35 deraadt 153: if (pbuf[0])
154: error = getaddrinfo(host, pbuf, &hints, &res0);
155: }
1.34 itojun 156: if (error) {
1.39 itojun 157: if (error == EAI_SERVICE)
158: warnx("%s: bad port number `%s'", host, port);
159: else
160: warnx("%s: %s", host, gai_strerror(error));
1.1 deraadt 161: code = -1;
162: return (0);
163: }
1.34 itojun 164:
165: if (res0->ai_canonname)
1.41 lebel 166: strlcpy(hostnamebuf, res0->ai_canonname, sizeof(hostnamebuf));
1.34 itojun 167: else
1.41 lebel 168: strlcpy(hostnamebuf, host, sizeof(hostnamebuf));
1.34 itojun 169: hostname = hostnamebuf;
170:
171: s = -1;
172: for (res = res0; res; res = res->ai_next) {
173: #if 0 /*old behavior*/
174: if (res != res0) /* not on the first address */
175: #else
176: if (res0->ai_next) /* if we have multiple possibilities */
177: #endif
178: {
1.50 itojun 179: if (getnameinfo(res->ai_addr, res->ai_addrlen,
180: hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
181: strlcpy(hbuf, "unknown", sizeof(hbuf));
1.70 ! pyr 182: if (verbose)
! 183: fprintf(ttyout, "Trying %s...\n", hbuf);
1.34 itojun 184: }
185: s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
186: if (s < 0) {
187: cause = "socket";
1.27 deraadt 188: continue;
1.34 itojun 189: }
190: while ((error = connect(s, res->ai_addr, res->ai_addrlen)) < 0
191: && errno == EINTR) {
192: ;
193: }
194: if (error) {
195: /* this "if" clause is to prevent print warning twice */
196: if (res->ai_next) {
1.50 itojun 197: if (getnameinfo(res->ai_addr, res->ai_addrlen,
198: hbuf, sizeof(hbuf), NULL, 0,
199: NI_NUMERICHOST) != 0)
200: strlcpy(hbuf, "(unknown)",
201: sizeof(hbuf));
1.34 itojun 202: warn("connect to address %s", hbuf);
1.1 deraadt 203: }
1.34 itojun 204: cause = "connect";
1.60 moritz 205: error = errno;
1.34 itojun 206: close(s);
1.60 moritz 207: errno = error;
1.34 itojun 208: s = -1;
1.1 deraadt 209: continue;
210: }
1.34 itojun 211:
212: /* finally we got one */
213: break;
214: }
215: if (s < 0) {
1.38 millert 216: warn("%s", cause);
1.1 deraadt 217: code = -1;
1.34 itojun 218: freeaddrinfo(res0);
219: return 0;
1.1 deraadt 220: }
1.34 itojun 221: memcpy(&hisctladdr, res->ai_addr, res->ai_addrlen);
1.57 deraadt 222: namelen = res->ai_addrlen;
1.34 itojun 223: freeaddrinfo(res0);
224: res0 = res = NULL;
1.57 deraadt 225: if (getsockname(s, (struct sockaddr *)&myctladdr, &namelen) < 0) {
1.1 deraadt 226: warn("getsockname");
227: code = -1;
228: goto bad;
229: }
1.34 itojun 230: #if defined(IPPROTO_IP) && defined(IP_TOS)
231: if (hisctladdr.su_family == AF_INET) {
232: tos = IPTOS_LOWDELAY;
233: if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
234: warn("setsockopt TOS (ignored)");
235: }
1.1 deraadt 236: #endif
237: cin = fdopen(s, "r");
238: cout = fdopen(s, "w");
239: if (cin == NULL || cout == NULL) {
240: warnx("fdopen failed.");
241: if (cin)
1.11 millert 242: (void)fclose(cin);
1.1 deraadt 243: if (cout)
1.11 millert 244: (void)fclose(cout);
1.1 deraadt 245: code = -1;
246: goto bad;
247: }
248: if (verbose)
1.18 deraadt 249: fprintf(ttyout, "Connected to %s.\n", hostname);
1.1 deraadt 250: if (getreply(0) > 2) { /* read startup message from server */
251: if (cin)
1.11 millert 252: (void)fclose(cin);
1.1 deraadt 253: if (cout)
1.11 millert 254: (void)fclose(cout);
1.1 deraadt 255: code = -1;
256: goto bad;
257: }
258: #ifdef SO_OOBINLINE
259: {
260: int on = 1;
261:
262: if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
263: < 0 && debug) {
264: warn("setsockopt");
265: }
266: }
267: #endif /* SO_OOBINLINE */
268:
269: return (hostname);
270: bad:
1.11 millert 271: (void)close(s);
1.1 deraadt 272: return ((char *)0);
273: }
274:
1.57 deraadt 275: /* ARGSUSED */
1.1 deraadt 276: void
1.57 deraadt 277: cmdabort(int signo)
1.1 deraadt 278: {
279:
1.10 millert 280: alarmtimer(0);
1.18 deraadt 281: putc('\n', ttyout);
282: (void)fflush(ttyout);
1.1 deraadt 283: abrtflag++;
284: if (ptflag)
1.10 millert 285: longjmp(ptabort, 1);
1.1 deraadt 286: }
287:
288: /*VARARGS*/
289: int
1.13 millert 290: command(const char *fmt, ...)
1.1 deraadt 291: {
292: va_list ap;
293: int r;
294: sig_t oldintr;
295:
296: abrtflag = 0;
297: if (debug) {
1.18 deraadt 298: fputs("---> ", ttyout);
1.13 millert 299: va_start(ap, fmt);
1.1 deraadt 300: if (strncmp("PASS ", fmt, 5) == 0)
1.18 deraadt 301: fputs("PASS XXXX", ttyout);
1.10 millert 302: else if (strncmp("ACCT ", fmt, 5) == 0)
1.18 deraadt 303: fputs("ACCT XXXX", ttyout);
1.10 millert 304: else
1.28 millert 305: vfprintf(ttyout, fmt, ap);
1.1 deraadt 306: va_end(ap);
1.18 deraadt 307: putc('\n', ttyout);
308: (void)fflush(ttyout);
1.1 deraadt 309: }
310: if (cout == NULL) {
1.13 millert 311: warnx("No control connection for command.");
1.1 deraadt 312: code = -1;
313: return (0);
314: }
315: oldintr = signal(SIGINT, cmdabort);
1.13 millert 316: va_start(ap, fmt);
1.1 deraadt 317: vfprintf(cout, fmt, ap);
318: va_end(ap);
1.11 millert 319: fputs("\r\n", cout);
320: (void)fflush(cout);
1.1 deraadt 321: cpend = 1;
322: r = getreply(!strcmp(fmt, "QUIT"));
323: if (abrtflag && oldintr != SIG_IGN)
324: (*oldintr)(SIGINT);
1.11 millert 325: (void)signal(SIGINT, oldintr);
1.1 deraadt 326: return (r);
327: }
328:
1.68 espie 329: int keep_alive_timeout = 60; /* 0 -> no timeout */
1.67 espie 330:
331: static int full_noops_sent = 0;
332: static time_t last_timestamp = 0; /* 0 -> no measurement yet */
333: static char noop[] = "NOOP\r\n";
334: #define NOOP_LENGTH (sizeof noop - 1)
335: static int current_nop_pos = 0; /* 0 -> no noop started */
336:
337: /* to achieve keep alive, we send noop one byte at a time */
338: void
339: send_noop_char()
340: {
341: if (debug)
342: fprintf(ttyout, "---> %c\n", noop[current_nop_pos]);
343: fputc(noop[current_nop_pos++], cout);
344: (void)fflush(cout);
345: if (current_nop_pos >= NOOP_LENGTH) {
346: full_noops_sent++;
347: current_nop_pos = 0;
348: }
349: }
350:
351: void
352: may_reset_noop_timeout()
353: {
354: if (keep_alive_timeout != 0)
355: last_timestamp = time(NULL);
356: }
357:
358: void
359: may_receive_noop_ack()
360: {
361: int i;
362:
363: /* finish sending last incomplete noop */
364: if (current_nop_pos != 0) {
365: fputs(&(noop[current_nop_pos]), cout);
366: if (debug)
367: fprintf(ttyout, "---> %s\n", &(noop[current_nop_pos]));
368: (void)fflush(cout);
369: current_nop_pos = 0;
370: full_noops_sent++;
371: }
372: /* and get the replies */
373: for (i = 0; i < full_noops_sent; i++)
374: (void)getreply(0);
375:
376: full_noops_sent = 0;
377: }
378:
379: void
380: may_send_noop_char()
381: {
382: if (keep_alive_timeout != 0) {
383: if (last_timestamp != 0) {
384: time_t t = time(NULL);
385:
386: if (t - last_timestamp >= keep_alive_timeout) {
387: last_timestamp = t;
388: send_noop_char();
389: }
390: } else {
391: last_timestamp = time(NULL);
392: }
393: }
394: }
395:
1.10 millert 396: char reply_string[BUFSIZ]; /* first line of previous reply */
1.1 deraadt 397:
398: int
1.56 deraadt 399: getreply(int expecteof)
1.1 deraadt 400: {
1.10 millert 401: char current_line[BUFSIZ]; /* last line of previous reply */
1.64 ray 402: int c, n, lineno;
1.1 deraadt 403: int dig;
404: int originalcode = 0, continuation = 0;
405: sig_t oldintr;
406: int pflag = 0;
407: char *cp, *pt = pasv;
408:
1.25 weingart 409: memset(current_line, 0, sizeof(current_line));
1.1 deraadt 410: oldintr = signal(SIGINT, cmdabort);
1.64 ray 411: for (lineno = 0 ;; lineno++) {
1.1 deraadt 412: dig = n = code = 0;
1.10 millert 413: cp = current_line;
1.23 millert 414: while ((c = fgetc(cin)) != '\n') {
1.1 deraadt 415: if (c == IAC) { /* handle telnet commands */
1.23 millert 416: switch (c = fgetc(cin)) {
1.1 deraadt 417: case WILL:
418: case WONT:
1.23 millert 419: c = fgetc(cin);
1.1 deraadt 420: fprintf(cout, "%c%c%c", IAC, DONT, c);
1.11 millert 421: (void)fflush(cout);
1.1 deraadt 422: break;
423: case DO:
424: case DONT:
1.23 millert 425: c = fgetc(cin);
1.1 deraadt 426: fprintf(cout, "%c%c%c", IAC, WONT, c);
1.11 millert 427: (void)fflush(cout);
1.1 deraadt 428: break;
429: default:
430: break;
431: }
432: continue;
433: }
434: dig++;
435: if (c == EOF) {
436: if (expecteof) {
1.11 millert 437: (void)signal(SIGINT, oldintr);
1.1 deraadt 438: code = 221;
439: return (0);
440: }
441: lostpeer();
442: if (verbose) {
1.18 deraadt 443: fputs(
444: "421 Service not available, remote server has closed connection.\n", ttyout);
445: (void)fflush(ttyout);
1.1 deraadt 446: }
447: code = 421;
448: return (4);
449: }
1.10 millert 450: if (c != '\r' && (verbose > 0 ||
1.21 mickey 451: ((verbose > -1 && n == '5' && dig > 4)) &&
452: (((!n && c < '5') || (n && n < '5'))
453: || !retry_connect))) {
1.1 deraadt 454: if (proxflag &&
1.10 millert 455: (dig == 1 || (dig == 5 && verbose == 0)))
1.18 deraadt 456: fprintf(ttyout, "%s:", hostname);
457: (void)putc(c, ttyout);
1.1 deraadt 458: }
459: if (dig < 4 && isdigit(c))
460: code = code * 10 + (c - '0');
1.34 itojun 461: if (!pflag && (code == 227 || code == 228))
1.1 deraadt 462: pflag = 1;
1.34 itojun 463: else if (!pflag && code == 229)
464: pflag = 100;
1.1 deraadt 465: if (dig > 4 && pflag == 1 && isdigit(c))
466: pflag = 2;
467: if (pflag == 2) {
1.44 itojun 468: if (c != '\r' && c != ')') {
469: if (pt < &pasv[sizeof(pasv) - 1])
470: *pt++ = c;
471: } else {
1.1 deraadt 472: *pt = '\0';
473: pflag = 3;
474: }
475: }
1.34 itojun 476: if (pflag == 100 && c == '(')
477: pflag = 2;
1.1 deraadt 478: if (dig == 4 && c == '-') {
479: if (continuation)
480: code = 0;
481: continuation++;
482: }
1.10 millert 483: if (n == 0)
484: n = c;
485: if (cp < ¤t_line[sizeof(current_line) - 1])
1.1 deraadt 486: *cp++ = c;
487: }
1.11 millert 488: if (verbose > 0 || ((verbose > -1 && n == '5') &&
489: (n < '5' || !retry_connect))) {
1.18 deraadt 490: (void)putc(c, ttyout);
491: (void)fflush (ttyout);
1.1 deraadt 492: }
1.64 ray 493: if (lineno == 0) {
1.10 millert 494: size_t len = cp - current_line;
495:
496: if (len > sizeof(reply_string))
497: len = sizeof(reply_string);
498:
1.48 itojun 499: (void)strlcpy(reply_string, current_line, len);
1.10 millert 500: }
1.1 deraadt 501: if (continuation && code != originalcode) {
502: if (originalcode == 0)
503: originalcode = code;
504: continue;
505: }
506: *cp = '\0';
507: if (n != '1')
508: cpend = 0;
1.11 millert 509: (void)signal(SIGINT, oldintr);
1.1 deraadt 510: if (code == 421 || originalcode == 421)
511: lostpeer();
512: if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
513: (*oldintr)(SIGINT);
514: return (n - '0');
515: }
516: }
517:
518: jmp_buf sendabort;
519:
1.57 deraadt 520: /* ARGSUSED */
1.1 deraadt 521: void
1.57 deraadt 522: abortsend(int signo)
1.1 deraadt 523: {
524:
1.10 millert 525: alarmtimer(0);
1.1 deraadt 526: mflag = 0;
527: abrtflag = 0;
1.18 deraadt 528: fputs("\nsend aborted\nwaiting for remote to finish abort.\n", ttyout);
529: (void)fflush(ttyout);
1.1 deraadt 530: longjmp(sendabort, 1);
531: }
532:
533: void
1.56 deraadt 534: sendrequest(const char *cmd, const char *local, const char *remote,
535: int printnames)
1.1 deraadt 536: {
537: struct stat st;
538: int c, d;
1.40 millert 539: FILE * volatile fin, * volatile dout;
1.42 millert 540: int (* volatile closefunc)(FILE *);
1.40 millert 541: volatile sig_t oldinti, oldintr, oldintp;
1.20 millert 542: volatile off_t hashbytes;
1.40 millert 543: char * volatile lmode;
544: char buf[BUFSIZ], *bufp;
1.69 ray 545: int oprogress, serrno;
1.1 deraadt 546:
1.10 millert 547: hashbytes = mark;
548: direction = "sent";
1.20 millert 549: dout = NULL;
1.10 millert 550: bytes = 0;
551: filesize = -1;
1.13 millert 552: oprogress = progress;
1.1 deraadt 553: if (verbose && printnames) {
554: if (local && *local != '-')
1.18 deraadt 555: fprintf(ttyout, "local: %s ", local);
1.1 deraadt 556: if (remote)
1.18 deraadt 557: fprintf(ttyout, "remote: %s\n", remote);
1.1 deraadt 558: }
559: if (proxy) {
560: proxtrans(cmd, local, remote);
561: return;
562: }
563: if (curtype != type)
564: changetype(type, 0);
565: closefunc = NULL;
566: oldintr = NULL;
567: oldintp = NULL;
1.10 millert 568: oldinti = NULL;
1.1 deraadt 569: lmode = "w";
570: if (setjmp(sendabort)) {
571: while (cpend) {
1.11 millert 572: (void)getreply(0);
1.1 deraadt 573: }
574: if (data >= 0) {
1.11 millert 575: (void)close(data);
1.1 deraadt 576: data = -1;
577: }
578: if (oldintr)
1.11 millert 579: (void)signal(SIGINT, oldintr);
1.1 deraadt 580: if (oldintp)
1.11 millert 581: (void)signal(SIGPIPE, oldintp);
1.10 millert 582: if (oldinti)
1.11 millert 583: (void)signal(SIGINFO, oldinti);
1.13 millert 584: progress = oprogress;
1.1 deraadt 585: code = -1;
586: return;
587: }
588: oldintr = signal(SIGINT, abortsend);
1.10 millert 589: oldinti = signal(SIGINFO, psummary);
1.13 millert 590: if (strcmp(local, "-") == 0) {
1.1 deraadt 591: fin = stdin;
1.31 millert 592: if (progress == 1)
593: progress = 0;
1.13 millert 594: } else if (*local == '|') {
1.10 millert 595: oldintp = signal(SIGPIPE, SIG_IGN);
1.1 deraadt 596: fin = popen(local + 1, "r");
597: if (fin == NULL) {
598: warn("%s", local + 1);
1.11 millert 599: (void)signal(SIGINT, oldintr);
600: (void)signal(SIGPIPE, oldintp);
601: (void)signal(SIGINFO, oldinti);
1.1 deraadt 602: code = -1;
603: return;
604: }
1.31 millert 605: if (progress == 1)
606: progress = 0;
1.1 deraadt 607: closefunc = pclose;
608: } else {
609: fin = fopen(local, "r");
610: if (fin == NULL) {
611: warn("local: %s", local);
1.11 millert 612: (void)signal(SIGINT, oldintr);
613: (void)signal(SIGINFO, oldinti);
1.1 deraadt 614: code = -1;
615: return;
616: }
617: closefunc = fclose;
618: if (fstat(fileno(fin), &st) < 0 ||
1.14 millert 619: (st.st_mode & S_IFMT) != S_IFREG) {
1.18 deraadt 620: fprintf(ttyout, "%s: not a plain file.\n", local);
1.11 millert 621: (void)signal(SIGINT, oldintr);
622: (void)signal(SIGINFO, oldinti);
1.1 deraadt 623: fclose(fin);
624: code = -1;
625: return;
626: }
1.10 millert 627: filesize = st.st_size;
1.1 deraadt 628: }
629: if (initconn()) {
1.11 millert 630: (void)signal(SIGINT, oldintr);
631: (void)signal(SIGINFO, oldinti);
1.1 deraadt 632: if (oldintp)
1.11 millert 633: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 634: code = -1;
1.13 millert 635: progress = oprogress;
1.1 deraadt 636: if (closefunc != NULL)
637: (*closefunc)(fin);
638: return;
639: }
640: if (setjmp(sendabort))
641: goto abort;
642:
643: if (restart_point &&
644: (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
1.59 deraadt 645: int rc = -1;
1.1 deraadt 646:
647: switch (curtype) {
648: case TYPE_A:
1.58 sturm 649: rc = fseeko(fin, restart_point, SEEK_SET);
1.1 deraadt 650: break;
651: case TYPE_I:
652: case TYPE_L:
1.59 deraadt 653: if (lseek(fileno(fin), restart_point, SEEK_SET) != -1)
654: rc = 0;
1.1 deraadt 655: break;
656: }
1.59 deraadt 657: if (rc == -1) {
1.1 deraadt 658: warn("local: %s", local);
659: restart_point = 0;
1.13 millert 660: progress = oprogress;
1.1 deraadt 661: if (closefunc != NULL)
662: (*closefunc)(fin);
663: return;
664: }
1.58 sturm 665: if (command("REST %lld", (long long) restart_point)
1.1 deraadt 666: != CONTINUE) {
667: restart_point = 0;
1.13 millert 668: progress = oprogress;
1.1 deraadt 669: if (closefunc != NULL)
670: (*closefunc)(fin);
671: return;
672: }
673: restart_point = 0;
674: lmode = "r+w";
675: }
676: if (remote) {
677: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 678: (void)signal(SIGINT, oldintr);
679: (void)signal(SIGINFO, oldinti);
1.13 millert 680: progress = oprogress;
1.1 deraadt 681: if (oldintp)
1.11 millert 682: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 683: if (closefunc != NULL)
684: (*closefunc)(fin);
685: return;
686: }
687: } else
688: if (command("%s", cmd) != PRELIM) {
1.11 millert 689: (void)signal(SIGINT, oldintr);
690: (void)signal(SIGINFO, oldinti);
1.13 millert 691: progress = oprogress;
1.1 deraadt 692: if (oldintp)
1.11 millert 693: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 694: if (closefunc != NULL)
695: (*closefunc)(fin);
696: return;
697: }
698: dout = dataconn(lmode);
699: if (dout == NULL)
700: goto abort;
1.10 millert 701: progressmeter(-1);
1.67 espie 702: may_reset_noop_timeout();
1.1 deraadt 703: oldintp = signal(SIGPIPE, SIG_IGN);
704: switch (curtype) {
705:
706: case TYPE_I:
707: case TYPE_L:
1.69 ray 708: d = 0;
1.11 millert 709: while ((c = read(fileno(fin), buf, sizeof(buf))) > 0) {
1.67 espie 710: may_send_noop_char();
1.1 deraadt 711: bytes += c;
712: for (bufp = buf; c > 0; c -= d, bufp += d)
1.20 millert 713: if ((d = write(fileno(dout), bufp, (size_t)c))
714: <= 0)
1.1 deraadt 715: break;
1.10 millert 716: if (hash && (!progress || filesize < 0) ) {
1.1 deraadt 717: while (bytes >= hashbytes) {
1.18 deraadt 718: (void)putc('#', ttyout);
1.7 kstailey 719: hashbytes += mark;
1.1 deraadt 720: }
1.18 deraadt 721: (void)fflush(ttyout);
1.1 deraadt 722: }
723: }
1.69 ray 724: if (c == -1 || d == -1)
725: serrno = errno;
1.10 millert 726: if (hash && (!progress || filesize < 0) && bytes > 0) {
1.7 kstailey 727: if (bytes < mark)
1.18 deraadt 728: (void)putc('#', ttyout);
729: (void)putc('\n', ttyout);
730: (void)fflush(ttyout);
1.1 deraadt 731: }
732: if (c < 0)
1.69 ray 733: warnx("local: %s: %s", local, strerror(serrno));
1.1 deraadt 734: if (d < 0) {
1.69 ray 735: if (serrno != EPIPE)
736: warnx("netout: %s", strerror(serrno));
1.1 deraadt 737: bytes = -1;
738: }
739: break;
740:
741: case TYPE_A:
1.23 millert 742: while ((c = fgetc(fin)) != EOF) {
1.67 espie 743: may_send_noop_char();
1.1 deraadt 744: if (c == '\n') {
1.10 millert 745: while (hash && (!progress || filesize < 0) &&
746: (bytes >= hashbytes)) {
1.18 deraadt 747: (void)putc('#', ttyout);
748: (void)fflush(ttyout);
1.7 kstailey 749: hashbytes += mark;
1.1 deraadt 750: }
751: if (ferror(dout))
752: break;
1.11 millert 753: (void)putc('\r', dout);
1.1 deraadt 754: bytes++;
755: }
1.11 millert 756: (void)putc(c, dout);
1.1 deraadt 757: bytes++;
1.10 millert 758: #if 0 /* this violates RFC */
759: if (c == '\r') {
760: (void)putc('\0', dout);
761: bytes++;
762: }
763: #endif
1.1 deraadt 764: }
1.69 ray 765: if (ferror(fin) || ferror(dout))
766: serrno = errno;
1.10 millert 767: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 768: if (bytes < hashbytes)
1.18 deraadt 769: (void)putc('#', ttyout);
770: (void)putc('\n', ttyout);
771: (void)fflush(ttyout);
1.1 deraadt 772: }
773: if (ferror(fin))
1.69 ray 774: warnx("local: %s: %s", local, strerror(serrno));
1.1 deraadt 775: if (ferror(dout)) {
776: if (errno != EPIPE)
1.69 ray 777: warnx("netout: %s", strerror(serrno));
1.1 deraadt 778: bytes = -1;
779: }
780: break;
781: }
1.10 millert 782: progressmeter(1);
1.13 millert 783: progress = oprogress;
1.1 deraadt 784: if (closefunc != NULL)
785: (*closefunc)(fin);
1.11 millert 786: (void)fclose(dout);
787: (void)getreply(0);
1.67 espie 788: may_receive_noop_ack();
1.11 millert 789: (void)signal(SIGINT, oldintr);
790: (void)signal(SIGINFO, oldinti);
1.1 deraadt 791: if (oldintp)
1.11 millert 792: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 793: if (bytes > 0)
1.10 millert 794: ptransfer(0);
1.1 deraadt 795: return;
796: abort:
1.11 millert 797: (void)signal(SIGINT, oldintr);
798: (void)signal(SIGINFO, oldinti);
1.13 millert 799: progress = oprogress;
1.1 deraadt 800: if (oldintp)
1.11 millert 801: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 802: if (!cpend) {
803: code = -1;
804: return;
805: }
806: if (data >= 0) {
1.11 millert 807: (void)close(data);
1.1 deraadt 808: data = -1;
809: }
810: if (dout)
1.11 millert 811: (void)fclose(dout);
812: (void)getreply(0);
1.1 deraadt 813: code = -1;
814: if (closefunc != NULL && fin != NULL)
815: (*closefunc)(fin);
816: if (bytes > 0)
1.10 millert 817: ptransfer(0);
1.1 deraadt 818: }
819:
820: jmp_buf recvabort;
821:
1.57 deraadt 822: /* ARGSUSED */
1.1 deraadt 823: void
1.57 deraadt 824: abortrecv(int signo)
1.1 deraadt 825: {
826:
1.10 millert 827: alarmtimer(0);
1.1 deraadt 828: mflag = 0;
829: abrtflag = 0;
1.18 deraadt 830: fputs("\nreceive aborted\nwaiting for remote to finish abort.\n", ttyout);
831: (void)fflush(ttyout);
1.1 deraadt 832: longjmp(recvabort, 1);
833: }
834:
835: void
1.56 deraadt 836: recvrequest(const char *cmd, const char * volatile local, const char *remote,
837: const char *lmode, int printnames, int ignorespecial)
1.1 deraadt 838: {
1.40 millert 839: FILE * volatile fout, * volatile din;
1.42 millert 840: int (* volatile closefunc)(FILE *);
1.40 millert 841: volatile sig_t oldinti, oldintr, oldintp;
1.69 ray 842: int c, d, serrno;
1.20 millert 843: volatile int is_retr, tcrflag, bare_lfs;
844: static size_t bufsize;
1.1 deraadt 845: static char *buf;
1.20 millert 846: volatile off_t hashbytes;
1.1 deraadt 847: struct stat st;
1.10 millert 848: time_t mtime;
1.13 millert 849: int oprogress;
1.16 millert 850: int opreserve;
1.1 deraadt 851:
1.20 millert 852: fout = NULL;
853: din = NULL;
854: oldinti = NULL;
1.10 millert 855: hashbytes = mark;
856: direction = "received";
857: bytes = 0;
1.20 millert 858: bare_lfs = 0;
1.10 millert 859: filesize = -1;
1.13 millert 860: oprogress = progress;
1.16 millert 861: opreserve = preserve;
1.1 deraadt 862: is_retr = strcmp(cmd, "RETR") == 0;
863: if (is_retr && verbose && printnames) {
1.22 millert 864: if (local && (ignorespecial || *local != '-'))
1.18 deraadt 865: fprintf(ttyout, "local: %s ", local);
1.1 deraadt 866: if (remote)
1.18 deraadt 867: fprintf(ttyout, "remote: %s\n", remote);
1.1 deraadt 868: }
869: if (proxy && is_retr) {
870: proxtrans(cmd, local, remote);
871: return;
872: }
873: closefunc = NULL;
874: oldintr = NULL;
875: oldintp = NULL;
876: tcrflag = !crflag && is_retr;
877: if (setjmp(recvabort)) {
878: while (cpend) {
1.11 millert 879: (void)getreply(0);
1.1 deraadt 880: }
881: if (data >= 0) {
1.11 millert 882: (void)close(data);
1.1 deraadt 883: data = -1;
884: }
885: if (oldintr)
1.11 millert 886: (void)signal(SIGINT, oldintr);
1.10 millert 887: if (oldinti)
1.11 millert 888: (void)signal(SIGINFO, oldinti);
1.15 millert 889: progress = oprogress;
1.16 millert 890: preserve = opreserve;
1.1 deraadt 891: code = -1;
892: return;
893: }
894: oldintr = signal(SIGINT, abortrecv);
1.10 millert 895: oldinti = signal(SIGINFO, psummary);
1.22 millert 896: if (ignorespecial || (strcmp(local, "-") && *local != '|')) {
897: if (access(local, W_OK) < 0) {
1.69 ray 898: char *dir;
1.1 deraadt 899:
900: if (errno != ENOENT && errno != EACCES) {
901: warn("local: %s", local);
1.11 millert 902: (void)signal(SIGINT, oldintr);
903: (void)signal(SIGINFO, oldinti);
1.1 deraadt 904: code = -1;
905: return;
906: }
1.69 ray 907: dir = strrchr(local, '/');
1.1 deraadt 908: if (dir != NULL)
909: *dir = 0;
1.22 millert 910: d = access(dir == local ? "/" : dir ? local : ".", W_OK);
1.1 deraadt 911: if (dir != NULL)
912: *dir = '/';
913: if (d < 0) {
914: warn("local: %s", local);
1.11 millert 915: (void)signal(SIGINT, oldintr);
916: (void)signal(SIGINFO, oldinti);
1.1 deraadt 917: code = -1;
918: return;
919: }
920: if (!runique && errno == EACCES &&
1.20 millert 921: chmod(local, (S_IRUSR|S_IWUSR)) < 0) {
1.1 deraadt 922: warn("local: %s", local);
1.11 millert 923: (void)signal(SIGINT, oldintr);
924: (void)signal(SIGINFO, oldinti);
1.1 deraadt 925: code = -1;
926: return;
927: }
928: if (runique && errno == EACCES &&
929: (local = gunique(local)) == NULL) {
1.11 millert 930: (void)signal(SIGINT, oldintr);
931: (void)signal(SIGINFO, oldinti);
1.1 deraadt 932: code = -1;
933: return;
934: }
935: }
936: else if (runique && (local = gunique(local)) == NULL) {
1.11 millert 937: (void)signal(SIGINT, oldintr);
938: (void)signal(SIGINFO, oldinti);
1.1 deraadt 939: code = -1;
940: return;
941: }
942: }
943: if (!is_retr) {
944: if (curtype != TYPE_A)
945: changetype(TYPE_A, 0);
1.10 millert 946: } else {
947: if (curtype != type)
948: changetype(type, 0);
949: filesize = remotesize(remote, 0);
950: }
1.1 deraadt 951: if (initconn()) {
1.11 millert 952: (void)signal(SIGINT, oldintr);
953: (void)signal(SIGINFO, oldinti);
1.1 deraadt 954: code = -1;
955: return;
956: }
957: if (setjmp(recvabort))
958: goto abort;
959: if (is_retr && restart_point &&
1.58 sturm 960: command("REST %lld", (long long) restart_point) != CONTINUE)
1.1 deraadt 961: return;
962: if (remote) {
963: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 964: (void)signal(SIGINT, oldintr);
965: (void)signal(SIGINFO, oldinti);
1.1 deraadt 966: return;
967: }
968: } else {
969: if (command("%s", cmd) != PRELIM) {
1.11 millert 970: (void)signal(SIGINT, oldintr);
971: (void)signal(SIGINFO, oldinti);
1.1 deraadt 972: return;
973: }
974: }
975: din = dataconn("r");
976: if (din == NULL)
977: goto abort;
1.22 millert 978: if (!ignorespecial && strcmp(local, "-") == 0) {
1.1 deraadt 979: fout = stdout;
1.16 millert 980: preserve = 0;
1.22 millert 981: } else if (!ignorespecial && *local == '|') {
1.1 deraadt 982: oldintp = signal(SIGPIPE, SIG_IGN);
983: fout = popen(local + 1, "w");
984: if (fout == NULL) {
985: warn("%s", local+1);
986: goto abort;
987: }
1.31 millert 988: if (progress == 1)
989: progress = 0;
1.16 millert 990: preserve = 0;
1.1 deraadt 991: closefunc = pclose;
992: } else {
993: fout = fopen(local, lmode);
994: if (fout == NULL) {
995: warn("local: %s", local);
996: goto abort;
997: }
998: closefunc = fclose;
999: }
1000: if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
1001: st.st_blksize = BUFSIZ;
1002: if (st.st_blksize > bufsize) {
1.65 steven 1003: (void)free(buf);
1.1 deraadt 1004: buf = malloc((unsigned)st.st_blksize);
1005: if (buf == NULL) {
1006: warn("malloc");
1007: bufsize = 0;
1008: goto abort;
1009: }
1010: bufsize = st.st_blksize;
1011: }
1.14 millert 1012: if ((st.st_mode & S_IFMT) != S_IFREG) {
1.31 millert 1013: if (progress == 1)
1014: progress = 0;
1.13 millert 1015: preserve = 0;
1016: }
1.10 millert 1017: progressmeter(-1);
1.67 espie 1018: may_reset_noop_timeout();
1.1 deraadt 1019: switch (curtype) {
1020:
1021: case TYPE_I:
1022: case TYPE_L:
1023: if (restart_point &&
1024: lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
1025: warn("local: %s", local);
1.13 millert 1026: progress = oprogress;
1.16 millert 1027: preserve = opreserve;
1.1 deraadt 1028: if (closefunc != NULL)
1029: (*closefunc)(fout);
1030: return;
1031: }
1032: errno = d = 0;
1033: while ((c = read(fileno(din), buf, bufsize)) > 0) {
1.57 deraadt 1034: ssize_t wr;
1.32 deraadt 1035: size_t rd = c;
1036:
1.67 espie 1037: may_send_noop_char();
1.32 deraadt 1038: d = 0;
1039: do {
1040: wr = write(fileno(fout), buf + d, rd);
1041: if (wr == -1 && errno == EPIPE)
1042: break;
1043: d += wr;
1044: rd -= wr;
1045: } while (d < c);
1046: if (rd != 0)
1.1 deraadt 1047: break;
1048: bytes += c;
1.10 millert 1049: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 1050: while (bytes >= hashbytes) {
1.18 deraadt 1051: (void)putc('#', ttyout);
1.7 kstailey 1052: hashbytes += mark;
1.1 deraadt 1053: }
1.18 deraadt 1054: (void)fflush(ttyout);
1.1 deraadt 1055: }
1056: }
1.69 ray 1057: if (c == -1 || d < c)
1058: serrno = errno;
1.10 millert 1059: if (hash && (!progress || filesize < 0) && bytes > 0) {
1.7 kstailey 1060: if (bytes < mark)
1.18 deraadt 1061: (void)putc('#', ttyout);
1062: (void)putc('\n', ttyout);
1063: (void)fflush(ttyout);
1.1 deraadt 1064: }
1065: if (c < 0) {
1.69 ray 1066: if (serrno != EPIPE)
1067: warnx("netin: %s", strerror(serrno));
1.1 deraadt 1068: bytes = -1;
1069: }
1070: if (d < c) {
1071: if (d < 0)
1.69 ray 1072: warnx("local: %s: %s", local, strerror(serrno));
1.1 deraadt 1073: else
1074: warnx("%s: short write", local);
1075: }
1076: break;
1077:
1078: case TYPE_A:
1079: if (restart_point) {
1080: int i, n, ch;
1081:
1082: if (fseek(fout, 0L, SEEK_SET) < 0)
1083: goto done;
1084: n = restart_point;
1085: for (i = 0; i++ < n;) {
1.69 ray 1086: if ((ch = fgetc(fout)) == EOF) {
1087: if (!ferror(fout))
1088: errno = 0;
1.1 deraadt 1089: goto done;
1.69 ray 1090: }
1.1 deraadt 1091: if (ch == '\n')
1092: i++;
1093: }
1094: if (fseek(fout, 0L, SEEK_CUR) < 0) {
1095: done:
1.69 ray 1096: if (errno)
1097: warn("local: %s", local);
1098: else
1099: warnx("local: %s", local);
1.13 millert 1100: progress = oprogress;
1.16 millert 1101: preserve = opreserve;
1.1 deraadt 1102: if (closefunc != NULL)
1103: (*closefunc)(fout);
1104: return;
1105: }
1106: }
1.23 millert 1107: while ((c = fgetc(din)) != EOF) {
1.67 espie 1108: may_send_noop_char();
1.1 deraadt 1109: if (c == '\n')
1110: bare_lfs++;
1111: while (c == '\r') {
1.10 millert 1112: while (hash && (!progress || filesize < 0) &&
1113: (bytes >= hashbytes)) {
1.18 deraadt 1114: (void)putc('#', ttyout);
1115: (void)fflush(ttyout);
1.7 kstailey 1116: hashbytes += mark;
1.1 deraadt 1117: }
1118: bytes++;
1.23 millert 1119: if ((c = fgetc(din)) != '\n' || tcrflag) {
1.1 deraadt 1120: if (ferror(fout))
1121: goto break2;
1.11 millert 1122: (void)putc('\r', fout);
1.1 deraadt 1123: if (c == '\0') {
1124: bytes++;
1125: goto contin2;
1126: }
1127: if (c == EOF)
1128: goto contin2;
1129: }
1130: }
1.11 millert 1131: (void)putc(c, fout);
1.1 deraadt 1132: bytes++;
1133: contin2: ;
1134: }
1135: break2:
1.69 ray 1136: if (ferror(din) || ferror(fout))
1137: serrno = errno;
1.1 deraadt 1138: if (bare_lfs) {
1.22 millert 1139: fprintf(ttyout,
1.13 millert 1140: "WARNING! %d bare linefeeds received in ASCII mode.\n", bare_lfs);
1.22 millert 1141: fputs("File may not have transferred correctly.\n",
1142: ttyout);
1.1 deraadt 1143: }
1.10 millert 1144: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 1145: if (bytes < hashbytes)
1.18 deraadt 1146: (void)putc('#', ttyout);
1147: (void)putc('\n', ttyout);
1148: (void)fflush(ttyout);
1.1 deraadt 1149: }
1150: if (ferror(din)) {
1.69 ray 1151: if (serrno != EPIPE)
1152: warnx("netin: %s", strerror(serrno));
1.1 deraadt 1153: bytes = -1;
1154: }
1155: if (ferror(fout))
1.69 ray 1156: warnx("local: %s: %s", local, strerror(serrno));
1.1 deraadt 1157: break;
1158: }
1.10 millert 1159: progressmeter(1);
1.13 millert 1160: progress = oprogress;
1.16 millert 1161: preserve = opreserve;
1.1 deraadt 1162: if (closefunc != NULL)
1163: (*closefunc)(fout);
1.11 millert 1164: (void)signal(SIGINT, oldintr);
1165: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1166: if (oldintp)
1.11 millert 1167: (void)signal(SIGPIPE, oldintp);
1168: (void)fclose(din);
1169: (void)getreply(0);
1.67 espie 1170: may_receive_noop_ack();
1.10 millert 1171: if (bytes >= 0 && is_retr) {
1172: if (bytes > 0)
1173: ptransfer(0);
1174: if (preserve && (closefunc == fclose)) {
1175: mtime = remotemodtime(remote, 0);
1176: if (mtime != -1) {
1.12 millert 1177: struct utimbuf ut;
1178:
1179: ut.actime = time(NULL);
1180: ut.modtime = mtime;
1181: if (utime(local, &ut) == -1)
1.22 millert 1182: fprintf(ttyout,
1.13 millert 1183: "Can't change modification time on %s to %s",
1.11 millert 1184: local, asctime(localtime(&mtime)));
1.10 millert 1185: }
1186: }
1187: }
1.1 deraadt 1188: return;
1.13 millert 1189:
1.1 deraadt 1190: abort:
1191:
1.10 millert 1192: /* abort using RFC959 recommended IP,SYNC sequence */
1.1 deraadt 1193:
1.13 millert 1194: progress = oprogress;
1.16 millert 1195: preserve = opreserve;
1.1 deraadt 1196: if (oldintp)
1.11 millert 1197: (void)signal(SIGPIPE, oldintp);
1198: (void)signal(SIGINT, SIG_IGN);
1.1 deraadt 1199: if (!cpend) {
1200: code = -1;
1.11 millert 1201: (void)signal(SIGINT, oldintr);
1202: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1203: return;
1204: }
1205:
1206: abort_remote(din);
1207: code = -1;
1208: if (data >= 0) {
1.11 millert 1209: (void)close(data);
1.1 deraadt 1210: data = -1;
1211: }
1212: if (closefunc != NULL && fout != NULL)
1213: (*closefunc)(fout);
1214: if (din)
1.11 millert 1215: (void)fclose(din);
1.1 deraadt 1216: if (bytes > 0)
1.10 millert 1217: ptransfer(0);
1.11 millert 1218: (void)signal(SIGINT, oldintr);
1219: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1220: }
1221:
1222: /*
1223: * Need to start a listen on the data channel before we send the command,
1224: * otherwise the server's connect may fail.
1225: */
1226: int
1.56 deraadt 1227: initconn(void)
1.1 deraadt 1228: {
1229: char *p, *a;
1.57 deraadt 1230: int result = ERROR, tmpno = 0;
1.1 deraadt 1231: int on = 1;
1.34 itojun 1232: int error;
1233: u_int addr[16], port[2];
1234: u_int af, hal, pal;
1235: char *pasvcmd = NULL;
1.57 deraadt 1236: socklen_t namelen;
1.34 itojun 1237:
1238: if (myctladdr.su_family == AF_INET6
1239: && (IN6_IS_ADDR_LINKLOCAL(&myctladdr.su_sin6.sin6_addr)
1240: || IN6_IS_ADDR_SITELOCAL(&myctladdr.su_sin6.sin6_addr))) {
1241: warnx("use of scoped address can be troublesome");
1242: }
1.24 millert 1243: reinit:
1.1 deraadt 1244: if (passivemode) {
1.34 itojun 1245: data_addr = myctladdr;
1246: data = socket(data_addr.su_family, SOCK_STREAM, 0);
1.1 deraadt 1247: if (data < 0) {
1.10 millert 1248: warn("socket");
1249: return (1);
1.1 deraadt 1250: }
1251: if ((options & SO_DEBUG) &&
1252: setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
1.11 millert 1253: sizeof(on)) < 0)
1.10 millert 1254: warn("setsockopt (ignored)");
1.34 itojun 1255: switch (data_addr.su_family) {
1256: case AF_INET:
1.36 itojun 1257: if (epsv4 && !epsv4bad) {
1.66 beck 1258: int ov;
1259: /* shut this command up in case it fails */
1260: ov = verbose;
1261: verbose = -1;
1.36 itojun 1262: result = command(pasvcmd = "EPSV");
1.66 beck 1263: /*
1264: * now back to whatever verbosity we had before
1265: * and we can try PASV
1266: */
1267: verbose = ov;
1.36 itojun 1268: if (code / 10 == 22 && code != 229) {
1269: fputs(
1.34 itojun 1270: "wrong server: return code must be 229\n",
1.36 itojun 1271: ttyout);
1272: result = COMPLETE + 1;
1273: }
1274: if (result != COMPLETE) {
1275: epsv4bad = 1;
1276: if (debug) {
1277: fputs(
1278: "disabling epsv4 for this connection\n",
1279: ttyout);
1280: }
1281: }
1.34 itojun 1282: }
1283: if (result != COMPLETE)
1284: result = command(pasvcmd = "PASV");
1285: break;
1286: case AF_INET6:
1287: result = command(pasvcmd = "EPSV");
1288: if (code / 10 == 22 && code != 229) {
1289: fputs(
1290: "wrong server: return code must be 229\n",
1291: ttyout);
1292: result = COMPLETE + 1;
1293: }
1294: if (result != COMPLETE)
1295: result = command(pasvcmd = "LPSV");
1296: break;
1297: default:
1298: result = COMPLETE + 1;
1299: break;
1300: }
1301: if (result != COMPLETE) {
1.24 millert 1302: if (activefallback) {
1303: (void)close(data);
1304: data = -1;
1305: passivemode = 0;
1306: activefallback = 0;
1307: goto reinit;
1308: }
1.18 deraadt 1309: fputs("Passive mode refused.\n", ttyout);
1.1 deraadt 1310: goto bad;
1311: }
1312:
1.34 itojun 1313: #define pack2(var, off) \
1314: (((var[(off) + 0] & 0xff) << 8) | ((var[(off) + 1] & 0xff) << 0))
1315: #define pack4(var, off) \
1316: (((var[(off) + 0] & 0xff) << 24) | ((var[(off) + 1] & 0xff) << 16) | \
1317: ((var[(off) + 2] & 0xff) << 8) | ((var[(off) + 3] & 0xff) << 0))
1318:
1.1 deraadt 1319: /*
1.34 itojun 1320: * What we've got at this point is a string of comma separated
1321: * one-byte unsigned integer values, separated by commas.
1.1 deraadt 1322: */
1.38 millert 1323: if (!pasvcmd)
1324: goto bad;
1.34 itojun 1325: if (strcmp(pasvcmd, "PASV") == 0) {
1326: if (data_addr.su_family != AF_INET) {
1327: fputs(
1328: "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1329: error = 1;
1330: goto bad;
1331: }
1332: if (code / 10 == 22 && code != 227) {
1333: fputs("wrong server: return code must be 227\n",
1334: ttyout);
1335: error = 1;
1336: goto bad;
1337: }
1338: error = sscanf(pasv, "%u,%u,%u,%u,%u,%u",
1339: &addr[0], &addr[1], &addr[2], &addr[3],
1340: &port[0], &port[1]);
1341: if (error != 6) {
1342: fputs(
1343: "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1344: error = 1;
1345: goto bad;
1346: }
1347: error = 0;
1348: memset(&data_addr, 0, sizeof(data_addr));
1349: data_addr.su_family = AF_INET;
1350: data_addr.su_len = sizeof(struct sockaddr_in);
1351: data_addr.su_sin.sin_addr.s_addr =
1352: htonl(pack4(addr, 0));
1353: data_addr.su_port = htons(pack2(port, 0));
1354: } else if (strcmp(pasvcmd, "LPSV") == 0) {
1355: if (code / 10 == 22 && code != 228) {
1356: fputs("wrong server: return code must be 228\n",
1357: ttyout);
1358: error = 1;
1359: goto bad;
1360: }
1361: switch (data_addr.su_family) {
1362: case AF_INET:
1363: error = sscanf(pasv,
1364: "%u,%u,%u,%u,%u,%u,%u,%u,%u",
1365: &af, &hal,
1366: &addr[0], &addr[1], &addr[2], &addr[3],
1367: &pal, &port[0], &port[1]);
1368: if (error != 9) {
1369: fputs(
1370: "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1371: error = 1;
1372: goto bad;
1373: }
1374: if (af != 4 || hal != 4 || pal != 2) {
1375: fputs(
1376: "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1377: error = 1;
1378: goto bad;
1379: }
1.1 deraadt 1380:
1.34 itojun 1381: error = 0;
1382: memset(&data_addr, 0, sizeof(data_addr));
1383: data_addr.su_family = AF_INET;
1384: data_addr.su_len = sizeof(struct sockaddr_in);
1385: data_addr.su_sin.sin_addr.s_addr =
1386: htonl(pack4(addr, 0));
1387: data_addr.su_port = htons(pack2(port, 0));
1388: break;
1389: case AF_INET6:
1390: error = sscanf(pasv,
1391: "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u",
1392: &af, &hal,
1393: &addr[0], &addr[1], &addr[2], &addr[3],
1394: &addr[4], &addr[5], &addr[6], &addr[7],
1395: &addr[8], &addr[9], &addr[10],
1396: &addr[11], &addr[12], &addr[13],
1397: &addr[14], &addr[15],
1398: &pal, &port[0], &port[1]);
1399: if (error != 21) {
1400: fputs(
1.18 deraadt 1401: "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1.34 itojun 1402: error = 1;
1403: goto bad;
1404: }
1405: if (af != 6 || hal != 16 || pal != 2) {
1406: fputs(
1407: "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
1408: error = 1;
1409: goto bad;
1410: }
1411:
1412: error = 0;
1413: memset(&data_addr, 0, sizeof(data_addr));
1414: data_addr.su_family = AF_INET6;
1415: data_addr.su_len = sizeof(struct sockaddr_in6);
1416: {
1417: u_int32_t *p32;
1418: p32 = (u_int32_t *)&data_addr.su_sin6.sin6_addr;
1419: p32[0] = htonl(pack4(addr, 0));
1420: p32[1] = htonl(pack4(addr, 4));
1421: p32[2] = htonl(pack4(addr, 8));
1422: p32[3] = htonl(pack4(addr, 12));
1423: }
1424: data_addr.su_port = htons(pack2(port, 0));
1425: break;
1426: default:
1427: error = 1;
1428: }
1429: } else if (strcmp(pasvcmd, "EPSV") == 0) {
1430: char delim[4];
1431:
1432: port[0] = 0;
1433: if (code / 10 == 22 && code != 229) {
1434: fputs("wrong server: return code must be 229\n",
1435: ttyout);
1436: error = 1;
1437: goto bad;
1438: }
1439: if (sscanf(pasv, "%c%c%c%d%c", &delim[0],
1440: &delim[1], &delim[2], &port[1],
1441: &delim[3]) != 5) {
1442: fputs("parse error!\n", ttyout);
1443: error = 1;
1444: goto bad;
1445: }
1446: if (delim[0] != delim[1] || delim[0] != delim[2]
1447: || delim[0] != delim[3]) {
1448: fputs("parse error!\n", ttyout);
1449: error = 1;
1450: goto bad;
1451: }
1452: data_addr = hisctladdr;
1453: data_addr.su_port = htons(port[1]);
1454: } else
1.1 deraadt 1455: goto bad;
1456:
1.27 deraadt 1457: while (connect(data, (struct sockaddr *)&data_addr,
1.34 itojun 1458: data_addr.su_len) < 0) {
1.27 deraadt 1459: if (errno == EINTR)
1460: continue;
1.33 millert 1461: if (activefallback) {
1462: (void)close(data);
1463: data = -1;
1464: passivemode = 0;
1465: activefallback = 0;
1466: goto reinit;
1467: }
1.10 millert 1468: warn("connect");
1.1 deraadt 1469: goto bad;
1470: }
1.34 itojun 1471: #if defined(IPPROTO_IP) && defined(IP_TOS)
1472: if (data_addr.su_family == AF_INET) {
1473: on = IPTOS_THROUGHPUT;
1474: if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on,
1475: sizeof(int)) < 0)
1476: warn("setsockopt TOS (ignored)");
1477: }
1.1 deraadt 1478: #endif
1.10 millert 1479: return (0);
1.1 deraadt 1480: }
1481:
1482: noport:
1483: data_addr = myctladdr;
1484: if (sendport)
1.34 itojun 1485: data_addr.su_port = 0; /* let system pick one */
1.1 deraadt 1486: if (data != -1)
1.11 millert 1487: (void)close(data);
1.34 itojun 1488: data = socket(data_addr.su_family, SOCK_STREAM, 0);
1.1 deraadt 1489: if (data < 0) {
1490: warn("socket");
1491: if (tmpno)
1492: sendport = 1;
1493: return (1);
1494: }
1495: if (!sendport)
1.10 millert 1496: if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on,
1.11 millert 1497: sizeof(on)) < 0) {
1.1 deraadt 1498: warn("setsockopt (reuse address)");
1499: goto bad;
1500: }
1.49 jakob 1501: switch (data_addr.su_family) {
1502: case AF_INET:
1503: on = IP_PORTRANGE_HIGH;
1504: if (setsockopt(data, IPPROTO_IP, IP_PORTRANGE,
1505: (char *)&on, sizeof(on)) < 0)
1506: warn("setsockopt IP_PORTRANGE (ignored)");
1507: break;
1508: case AF_INET6:
1509: on = IPV6_PORTRANGE_HIGH;
1510: if (setsockopt(data, IPPROTO_IPV6, IPV6_PORTRANGE,
1511: (char *)&on, sizeof(on)) < 0)
1512: warn("setsockopt IPV6_PORTRANGE (ignored)");
1513: break;
1514: }
1.34 itojun 1515: if (bind(data, (struct sockaddr *)&data_addr, data_addr.su_len) < 0) {
1.1 deraadt 1516: warn("bind");
1517: goto bad;
1518: }
1519: if (options & SO_DEBUG &&
1.10 millert 1520: setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
1.11 millert 1521: sizeof(on)) < 0)
1.1 deraadt 1522: warn("setsockopt (ignored)");
1.57 deraadt 1523: namelen = sizeof(data_addr);
1524: if (getsockname(data, (struct sockaddr *)&data_addr, &namelen) < 0) {
1.1 deraadt 1525: warn("getsockname");
1526: goto bad;
1527: }
1528: if (listen(data, 1) < 0)
1529: warn("listen");
1.34 itojun 1530:
1531: #define UC(b) (((int)b)&0xff)
1532:
1.1 deraadt 1533: if (sendport) {
1.47 itojun 1534: char hname[NI_MAXHOST], pbuf[NI_MAXSERV];
1.64 ray 1535: int af_tmp;
1.47 itojun 1536: union sockunion tmp;
1.34 itojun 1537:
1.47 itojun 1538: tmp = data_addr;
1539: switch (tmp.su_family) {
1.34 itojun 1540: case AF_INET:
1.36 itojun 1541: if (!epsv4 || epsv4bad) {
1542: result = COMPLETE +1;
1543: break;
1544: }
1545: /*FALLTHROUGH*/
1.34 itojun 1546: case AF_INET6:
1.47 itojun 1547: if (tmp.su_family == AF_INET6)
1548: tmp.su_sin6.sin6_scope_id = 0;
1.64 ray 1549: af_tmp = (tmp.su_family == AF_INET) ? 1 : 2;
1.47 itojun 1550: if (getnameinfo((struct sockaddr *)&tmp,
1551: tmp.su_len, hname, sizeof(hname),
1552: pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV)) {
1.34 itojun 1553: result = ERROR;
1554: } else {
1.47 itojun 1555: result = command("EPRT |%d|%s|%s|",
1.64 ray 1556: af_tmp, hname, pbuf);
1.36 itojun 1557: if (result != COMPLETE) {
1558: epsv4bad = 1;
1559: if (debug) {
1560: fputs(
1561: "disabling epsv4 for this connection\n",
1562: ttyout);
1563: }
1564: }
1.34 itojun 1565: }
1566: break;
1567: default:
1568: result = COMPLETE + 1;
1569: break;
1570: }
1571: if (result == COMPLETE)
1572: goto skip_port;
1573:
1574: switch (data_addr.su_family) {
1575: case AF_INET:
1576: a = (char *)&data_addr.su_sin.sin_addr;
1577: p = (char *)&data_addr.su_port;
1578: result = command("PORT %d,%d,%d,%d,%d,%d",
1579: UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
1580: UC(p[0]), UC(p[1]));
1581: break;
1582: case AF_INET6:
1583: a = (char *)&data_addr.su_sin6.sin6_addr;
1584: p = (char *)&data_addr.su_port;
1585: result = command(
1586: "LPRT %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
1587: 6, 16,
1588: UC(a[0]),UC(a[1]),UC(a[2]),UC(a[3]),
1589: UC(a[4]),UC(a[5]),UC(a[6]),UC(a[7]),
1590: UC(a[8]),UC(a[9]),UC(a[10]),UC(a[11]),
1591: UC(a[12]),UC(a[13]),UC(a[14]),UC(a[15]),
1592: 2, UC(p[0]), UC(p[1]));
1593: break;
1594: default:
1595: result = COMPLETE + 1; /* xxx */
1596: }
1597: skip_port:
1598:
1.1 deraadt 1599: if (result == ERROR && sendport == -1) {
1600: sendport = 0;
1601: tmpno = 1;
1602: goto noport;
1603: }
1604: return (result != COMPLETE);
1605: }
1606: if (tmpno)
1607: sendport = 1;
1.34 itojun 1608: #if defined(IPPROTO_IP) && defined(IP_TOS)
1609: if (data_addr.su_family == AF_INET) {
1610: on = IPTOS_THROUGHPUT;
1611: if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on,
1612: sizeof(int)) < 0)
1613: warn("setsockopt TOS (ignored)");
1614: }
1.1 deraadt 1615: #endif
1616: return (0);
1617: bad:
1.11 millert 1618: (void)close(data), data = -1;
1.1 deraadt 1619: if (tmpno)
1620: sendport = 1;
1621: return (1);
1622: }
1623:
1624: FILE *
1.56 deraadt 1625: dataconn(const char *lmode)
1.1 deraadt 1626: {
1.34 itojun 1627: union sockunion from;
1.57 deraadt 1628: socklen_t fromlen = myctladdr.su_len;
1629: int s;
1.1 deraadt 1630:
1631: if (passivemode)
1632: return (fdopen(data, lmode));
1633:
1634: s = accept(data, (struct sockaddr *) &from, &fromlen);
1635: if (s < 0) {
1636: warn("accept");
1.11 millert 1637: (void)close(data), data = -1;
1.1 deraadt 1638: return (NULL);
1639: }
1.11 millert 1640: (void)close(data);
1.1 deraadt 1641: data = s;
1.34 itojun 1642: #if defined(IPPROTO_IP) && defined(IP_TOS)
1643: if (from.su_family == AF_INET) {
1644: int tos = IPTOS_THROUGHPUT;
1645: if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos,
1646: sizeof(int)) < 0) {
1647: warn("setsockopt TOS (ignored)");
1648: }
1649: }
1.1 deraadt 1650: #endif
1651: return (fdopen(data, lmode));
1652: }
1653:
1.57 deraadt 1654: /* ARGSUSED */
1.1 deraadt 1655: void
1.57 deraadt 1656: psummary(int signo)
1.1 deraadt 1657: {
1.26 deraadt 1658: int save_errno = errno;
1.10 millert 1659:
1660: if (bytes > 0)
1661: ptransfer(1);
1.26 deraadt 1662: errno = save_errno;
1.1 deraadt 1663: }
1664:
1.57 deraadt 1665: /* ARGSUSED */
1.1 deraadt 1666: void
1.57 deraadt 1667: psabort(int signo)
1.1 deraadt 1668: {
1669:
1.10 millert 1670: alarmtimer(0);
1.1 deraadt 1671: abrtflag++;
1672: }
1673:
1674: void
1.56 deraadt 1675: pswitch(int flag)
1.1 deraadt 1676: {
1677: sig_t oldintr;
1678: static struct comvars {
1679: int connect;
1680: char name[MAXHOSTNAMELEN];
1.34 itojun 1681: union sockunion mctl;
1682: union sockunion hctl;
1.1 deraadt 1683: FILE *in;
1684: FILE *out;
1685: int tpe;
1686: int curtpe;
1687: int cpnd;
1688: int sunqe;
1689: int runqe;
1690: int mcse;
1691: int ntflg;
1692: char nti[17];
1693: char nto[17];
1694: int mapflg;
1695: char mi[MAXPATHLEN];
1696: char mo[MAXPATHLEN];
1697: } proxstruct, tmpstruct;
1698: struct comvars *ip, *op;
1699:
1700: abrtflag = 0;
1701: oldintr = signal(SIGINT, psabort);
1702: if (flag) {
1703: if (proxy)
1704: return;
1705: ip = &tmpstruct;
1706: op = &proxstruct;
1707: proxy++;
1708: } else {
1709: if (!proxy)
1710: return;
1711: ip = &proxstruct;
1712: op = &tmpstruct;
1713: proxy = 0;
1714: }
1715: ip->connect = connected;
1716: connected = op->connect;
1717: if (hostname) {
1.41 lebel 1718: (void)strlcpy(ip->name, hostname, sizeof(ip->name));
1.1 deraadt 1719: } else
1.11 millert 1720: ip->name[0] = '\0';
1.1 deraadt 1721: hostname = op->name;
1722: ip->hctl = hisctladdr;
1723: hisctladdr = op->hctl;
1724: ip->mctl = myctladdr;
1725: myctladdr = op->mctl;
1726: ip->in = cin;
1727: cin = op->in;
1728: ip->out = cout;
1729: cout = op->out;
1730: ip->tpe = type;
1731: type = op->tpe;
1732: ip->curtpe = curtype;
1733: curtype = op->curtpe;
1734: ip->cpnd = cpend;
1735: cpend = op->cpnd;
1736: ip->sunqe = sunique;
1737: sunique = op->sunqe;
1738: ip->runqe = runique;
1739: runique = op->runqe;
1740: ip->mcse = mcase;
1741: mcase = op->mcse;
1742: ip->ntflg = ntflag;
1743: ntflag = op->ntflg;
1.41 lebel 1744: (void)strlcpy(ip->nti, ntin, sizeof(ip->nti));
1.52 deraadt 1745: (void)strlcpy(ntin, op->nti, sizeof ntin);
1.41 lebel 1746: (void)strlcpy(ip->nto, ntout, sizeof(ip->nto));
1.52 deraadt 1747: (void)strlcpy(ntout, op->nto, sizeof ntout);
1.1 deraadt 1748: ip->mapflg = mapflag;
1749: mapflag = op->mapflg;
1.41 lebel 1750: (void)strlcpy(ip->mi, mapin, sizeof(ip->mi));
1.52 deraadt 1751: (void)strlcpy(mapin, op->mi, sizeof mapin);
1.41 lebel 1752: (void)strlcpy(ip->mo, mapout, sizeof(ip->mo));
1.52 deraadt 1753: (void)strlcpy(mapout, op->mo, sizeof mapout);
1.11 millert 1754: (void)signal(SIGINT, oldintr);
1.1 deraadt 1755: if (abrtflag) {
1756: abrtflag = 0;
1757: (*oldintr)(SIGINT);
1758: }
1759: }
1760:
1.57 deraadt 1761: /* ARGSUSED */
1.1 deraadt 1762: void
1.57 deraadt 1763: abortpt(int signo)
1.1 deraadt 1764: {
1765:
1.10 millert 1766: alarmtimer(0);
1.18 deraadt 1767: putc('\n', ttyout);
1768: (void)fflush(ttyout);
1.1 deraadt 1769: ptabflg++;
1770: mflag = 0;
1771: abrtflag = 0;
1772: longjmp(ptabort, 1);
1773: }
1774:
1775: void
1.56 deraadt 1776: proxtrans(const char *cmd, const char *local, const char *remote)
1.1 deraadt 1777: {
1.40 millert 1778: volatile sig_t oldintr;
1.20 millert 1779: int prox_type, nfnd;
1780: volatile int secndflag;
1.40 millert 1781: char * volatile cmd2;
1.54 millert 1782: struct pollfd pfd[1];
1.20 millert 1783:
1784: oldintr = NULL;
1785: secndflag = 0;
1.1 deraadt 1786: if (strcmp(cmd, "RETR"))
1787: cmd2 = "RETR";
1788: else
1789: cmd2 = runique ? "STOU" : "STOR";
1790: if ((prox_type = type) == 0) {
1791: if (unix_server && unix_proxy)
1792: prox_type = TYPE_I;
1793: else
1794: prox_type = TYPE_A;
1795: }
1796: if (curtype != prox_type)
1797: changetype(prox_type, 1);
1798: if (command("PASV") != COMPLETE) {
1.18 deraadt 1799: fputs("proxy server does not support third party transfers.\n",
1800: ttyout);
1.1 deraadt 1801: return;
1802: }
1803: pswitch(0);
1804: if (!connected) {
1.18 deraadt 1805: fputs("No primary connection.\n", ttyout);
1.1 deraadt 1806: pswitch(1);
1807: code = -1;
1808: return;
1809: }
1810: if (curtype != prox_type)
1811: changetype(prox_type, 1);
1812: if (command("PORT %s", pasv) != COMPLETE) {
1813: pswitch(1);
1814: return;
1815: }
1816: if (setjmp(ptabort))
1817: goto abort;
1818: oldintr = signal(SIGINT, abortpt);
1819: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 1820: (void)signal(SIGINT, oldintr);
1.1 deraadt 1821: pswitch(1);
1822: return;
1823: }
1824: sleep(2);
1825: pswitch(1);
1826: secndflag++;
1827: if (command("%s %s", cmd2, local) != PRELIM)
1828: goto abort;
1829: ptflag++;
1.11 millert 1830: (void)getreply(0);
1.1 deraadt 1831: pswitch(0);
1.11 millert 1832: (void)getreply(0);
1833: (void)signal(SIGINT, oldintr);
1.1 deraadt 1834: pswitch(1);
1835: ptflag = 0;
1.18 deraadt 1836: fprintf(ttyout, "local: %s remote: %s\n", local, remote);
1.1 deraadt 1837: return;
1838: abort:
1.11 millert 1839: (void)signal(SIGINT, SIG_IGN);
1.1 deraadt 1840: ptflag = 0;
1841: if (strcmp(cmd, "RETR") && !proxy)
1842: pswitch(1);
1843: else if (!strcmp(cmd, "RETR") && proxy)
1844: pswitch(0);
1845: if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
1846: if (command("%s %s", cmd2, local) != PRELIM) {
1847: pswitch(0);
1848: if (cpend)
1.19 kstailey 1849: abort_remote(NULL);
1.1 deraadt 1850: }
1851: pswitch(1);
1852: if (ptabflg)
1853: code = -1;
1.11 millert 1854: (void)signal(SIGINT, oldintr);
1.1 deraadt 1855: return;
1856: }
1857: if (cpend)
1.19 kstailey 1858: abort_remote(NULL);
1.1 deraadt 1859: pswitch(!proxy);
1860: if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
1861: if (command("%s %s", cmd2, local) != PRELIM) {
1862: pswitch(0);
1863: if (cpend)
1.19 kstailey 1864: abort_remote(NULL);
1.1 deraadt 1865: pswitch(1);
1866: if (ptabflg)
1867: code = -1;
1.11 millert 1868: (void)signal(SIGINT, oldintr);
1.1 deraadt 1869: return;
1870: }
1871: }
1872: if (cpend)
1.19 kstailey 1873: abort_remote(NULL);
1.1 deraadt 1874: pswitch(!proxy);
1875: if (cpend) {
1.54 millert 1876: pfd[0].fd = fileno(cin);
1877: pfd[0].events = POLLIN;
1878: if ((nfnd = poll(pfd, 1, 10 * 1000)) <= 0) {
1879: if (nfnd < 0)
1.1 deraadt 1880: warn("abort");
1881: if (ptabflg)
1882: code = -1;
1883: lostpeer();
1884: }
1.11 millert 1885: (void)getreply(0);
1886: (void)getreply(0);
1.1 deraadt 1887: }
1888: if (proxy)
1889: pswitch(0);
1890: pswitch(1);
1891: if (ptabflg)
1892: code = -1;
1.11 millert 1893: (void)signal(SIGINT, oldintr);
1.1 deraadt 1894: }
1895:
1.57 deraadt 1896: /* ARGSUSED */
1.1 deraadt 1897: void
1.56 deraadt 1898: reset(int argc, char *argv[])
1.1 deraadt 1899: {
1.54 millert 1900: struct pollfd pfd[1];
1.1 deraadt 1901: int nfnd = 1;
1902:
1.54 millert 1903: pfd[0].fd = fileno(cin);
1904: pfd[0].events = POLLIN;
1.1 deraadt 1905: while (nfnd > 0) {
1.54 millert 1906: if ((nfnd = poll(pfd, 1, 0)) < 0) {
1.1 deraadt 1907: warn("reset");
1908: code = -1;
1909: lostpeer();
1.54 millert 1910: } else if (nfnd) {
1.11 millert 1911: (void)getreply(0);
1.1 deraadt 1912: }
1913: }
1914: }
1915:
1916: char *
1.56 deraadt 1917: gunique(const char *local)
1.1 deraadt 1918: {
1919: static char new[MAXPATHLEN];
1920: char *cp = strrchr(local, '/');
1921: int d, count=0;
1922: char ext = '1';
1923:
1924: if (cp)
1925: *cp = '\0';
1.22 millert 1926: d = access(cp == local ? "/" : cp ? local : ".", W_OK);
1.1 deraadt 1927: if (cp)
1928: *cp = '/';
1929: if (d < 0) {
1930: warn("local: %s", local);
1931: return ((char *) 0);
1932: }
1.52 deraadt 1933: (void)strlcpy(new, local, sizeof new);
1.1 deraadt 1934: cp = new + strlen(new);
1935: *cp++ = '.';
1936: while (!d) {
1937: if (++count == 100) {
1.18 deraadt 1938: fputs("runique: can't find unique file name.\n", ttyout);
1.1 deraadt 1939: return ((char *) 0);
1940: }
1941: *cp++ = ext;
1942: *cp = '\0';
1943: if (ext == '9')
1944: ext = '0';
1945: else
1946: ext++;
1.22 millert 1947: if ((d = access(new, F_OK)) < 0)
1.1 deraadt 1948: break;
1949: if (ext != '0')
1950: cp--;
1951: else if (*(cp - 2) == '.')
1952: *(cp - 1) = '1';
1953: else {
1954: *(cp - 2) = *(cp - 2) + 1;
1955: cp--;
1956: }
1957: }
1958: return (new);
1959: }
1960:
1961: void
1.56 deraadt 1962: abort_remote(FILE *din)
1.1 deraadt 1963: {
1964: char buf[BUFSIZ];
1965: int nfnd;
1.54 millert 1966: struct pollfd pfd[2];
1.13 millert 1967:
1968: if (cout == NULL) {
1969: warnx("Lost control connection for abort.");
1970: if (ptabflg)
1971: code = -1;
1972: lostpeer();
1973: return;
1974: }
1.1 deraadt 1975:
1976: /*
1977: * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
1978: * after urgent byte rather than before as is protocol now
1979: */
1.46 deraadt 1980: snprintf(buf, sizeof buf, "%c%c%c", IAC, IP, IAC);
1.1 deraadt 1981: if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
1982: warn("abort");
1.10 millert 1983: fprintf(cout, "%cABOR\r\n", DM);
1.11 millert 1984: (void)fflush(cout);
1.54 millert 1985: pfd[0].fd = fileno(cin);
1986: pfd[0].events = POLLIN;
1987: nfnd = 1;
1.10 millert 1988: if (din) {
1.54 millert 1989: pfd[1].fd = fileno(din);
1990: pfd[1].events = POLLIN;
1991: nfnd++;
1.1 deraadt 1992: }
1.54 millert 1993: if ((nfnd = poll(pfd, nfnd, 10 * 1000)) <= 0) {
1994: if (nfnd < 0)
1.1 deraadt 1995: warn("abort");
1996: if (ptabflg)
1997: code = -1;
1998: lostpeer();
1999: }
1.54 millert 2000: if (din && (pfd[1].revents & POLLIN)) {
1.1 deraadt 2001: while (read(fileno(din), buf, BUFSIZ) > 0)
2002: /* LOOP */;
2003: }
2004: if (getreply(0) == ERROR && code == 552) {
2005: /* 552 needed for nic style abort */
1.11 millert 2006: (void)getreply(0);
1.1 deraadt 2007: }
1.11 millert 2008: (void)getreply(0);
1.1 deraadt 2009: }
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