Annotation of src/usr.bin/ftp/ftp.c, Revision 1.31
1.31 ! millert 1: /* $OpenBSD: ftp.c,v 1.30 1998/09/19 20:02:23 millert Exp $ */
1.22 millert 2: /* $NetBSD: ftp.c,v 1.27 1997/08/18 10:20:23 lukem Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1985, 1989, 1993, 1994
6: * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)ftp.c 8.6 (Berkeley) 10/27/94";
40: #else
1.31 ! millert 41: static char rcsid[] = "$OpenBSD: ftp.c,v 1.30 1998/09/19 20:02:23 millert Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
44:
1.10 millert 45: #include <sys/types.h>
1.1 deraadt 46: #include <sys/stat.h>
47: #include <sys/socket.h>
48:
49: #include <netinet/in.h>
50: #include <netinet/in_systm.h>
51: #include <netinet/ip.h>
52: #include <arpa/inet.h>
53: #include <arpa/ftp.h>
54: #include <arpa/telnet.h>
55:
56: #include <ctype.h>
57: #include <err.h>
58: #include <errno.h>
59: #include <netdb.h>
60: #include <stdio.h>
61: #include <stdlib.h>
62: #include <string.h>
63: #include <unistd.h>
1.12 millert 64: #include <utime.h>
1.13 millert 65: #ifdef __STDC__
66: #include <stdarg.h>
67: #else
1.1 deraadt 68: #include <varargs.h>
1.13 millert 69: #endif
1.1 deraadt 70:
71: #include "ftp_var.h"
72:
73: struct sockaddr_in hisctladdr;
74: struct sockaddr_in data_addr;
75: int data = -1;
76: int abrtflag = 0;
77: jmp_buf ptabort;
78: int ptabflg;
79: int ptflag = 0;
80: struct sockaddr_in myctladdr;
81: off_t restart_point = 0;
82:
83:
84: FILE *cin, *cout;
85:
86: char *
87: hookup(host, port)
1.10 millert 88: const char *host;
1.20 millert 89: in_port_t port;
1.1 deraadt 90: {
1.20 millert 91: struct hostent *hp = NULL;
1.1 deraadt 92: int s, len, tos;
1.10 millert 93: static char hostnamebuf[MAXHOSTNAMELEN];
1.1 deraadt 94:
1.12 millert 95: memset((void *)&hisctladdr, 0, sizeof(hisctladdr));
1.1 deraadt 96: if (inet_aton(host, &hisctladdr.sin_addr) != 0) {
97: hisctladdr.sin_family = AF_INET;
1.11 millert 98: (void)strncpy(hostnamebuf, host, sizeof(hostnamebuf) - 1);
99: hostnamebuf[sizeof(hostnamebuf) - 1] = '\0';
1.1 deraadt 100: } else {
101: hp = gethostbyname(host);
102: if (hp == NULL) {
103: warnx("%s: %s", host, hstrerror(h_errno));
104: code = -1;
105: return ((char *) 0);
106: }
107: hisctladdr.sin_family = hp->h_addrtype;
1.20 millert 108: memcpy(&hisctladdr.sin_addr, hp->h_addr_list[0],
109: (size_t)hp->h_length);
1.11 millert 110: (void)strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf) - 1);
111: hostnamebuf[sizeof(hostnamebuf) - 1] = '\0';
1.1 deraadt 112: }
113: hostname = hostnamebuf;
114: s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
115: if (s < 0) {
116: warn("socket");
117: code = -1;
118: return (0);
119: }
120: hisctladdr.sin_port = port;
1.10 millert 121: while (connect(s, (struct sockaddr *)&hisctladdr,
1.11 millert 122: sizeof(hisctladdr)) < 0) {
1.27 deraadt 123: if (errno == EINTR)
124: continue;
1.1 deraadt 125: if (hp && hp->h_addr_list[1]) {
126: int oerrno = errno;
127: char *ia;
128:
129: ia = inet_ntoa(hisctladdr.sin_addr);
130: errno = oerrno;
131: warn("connect to address %s", ia);
132: hp->h_addr_list++;
1.11 millert 133: memcpy(&hisctladdr.sin_addr, hp->h_addr_list[0],
1.20 millert 134: (size_t)hp->h_length);
1.27 deraadt 135: fprintf(ttyout, "Trying %s...\n",
136: inet_ntoa(hisctladdr.sin_addr));
1.11 millert 137: (void)close(s);
1.1 deraadt 138: s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
139: if (s < 0) {
140: warn("socket");
141: code = -1;
142: return (0);
143: }
144: continue;
145: }
146: warn("connect");
147: code = -1;
148: goto bad;
149: }
1.11 millert 150: len = sizeof(myctladdr);
1.1 deraadt 151: if (getsockname(s, (struct sockaddr *)&myctladdr, &len) < 0) {
152: warn("getsockname");
153: code = -1;
154: goto bad;
155: }
156: #ifdef IP_TOS
157: tos = IPTOS_LOWDELAY;
158: if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
159: warn("setsockopt TOS (ignored)");
160: #endif
161: cin = fdopen(s, "r");
162: cout = fdopen(s, "w");
163: if (cin == NULL || cout == NULL) {
164: warnx("fdopen failed.");
165: if (cin)
1.11 millert 166: (void)fclose(cin);
1.1 deraadt 167: if (cout)
1.11 millert 168: (void)fclose(cout);
1.1 deraadt 169: code = -1;
170: goto bad;
171: }
172: if (verbose)
1.18 deraadt 173: fprintf(ttyout, "Connected to %s.\n", hostname);
1.1 deraadt 174: if (getreply(0) > 2) { /* read startup message from server */
175: if (cin)
1.11 millert 176: (void)fclose(cin);
1.1 deraadt 177: if (cout)
1.11 millert 178: (void)fclose(cout);
1.1 deraadt 179: code = -1;
180: goto bad;
181: }
182: #ifdef SO_OOBINLINE
183: {
184: int on = 1;
185:
186: if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
187: < 0 && debug) {
188: warn("setsockopt");
189: }
190: }
191: #endif /* SO_OOBINLINE */
192:
193: return (hostname);
194: bad:
1.11 millert 195: (void)close(s);
1.1 deraadt 196: return ((char *)0);
197: }
198:
199: void
1.12 millert 200: cmdabort(notused)
201: int notused;
1.1 deraadt 202: {
203:
1.10 millert 204: alarmtimer(0);
1.18 deraadt 205: putc('\n', ttyout);
206: (void)fflush(ttyout);
1.1 deraadt 207: abrtflag++;
208: if (ptflag)
1.10 millert 209: longjmp(ptabort, 1);
1.1 deraadt 210: }
211:
212: /*VARARGS*/
213: int
1.13 millert 214: #ifdef __STDC__
215: command(const char *fmt, ...)
216: #else
1.1 deraadt 217: command(va_alist)
1.13 millert 218: va_dcl
219: #endif
1.1 deraadt 220: {
221: va_list ap;
222: int r;
223: sig_t oldintr;
1.13 millert 224: #ifndef __STDC__
225: const char *fmt;
226: #endif
1.1 deraadt 227:
228: abrtflag = 0;
229: if (debug) {
1.18 deraadt 230: fputs("---> ", ttyout);
1.13 millert 231: #ifdef __STDC__
232: va_start(ap, fmt);
233: #else
1.1 deraadt 234: va_start(ap);
1.13 millert 235: fmt = va_arg(ap, const char *);
236: #endif
1.1 deraadt 237: if (strncmp("PASS ", fmt, 5) == 0)
1.18 deraadt 238: fputs("PASS XXXX", ttyout);
1.10 millert 239: else if (strncmp("ACCT ", fmt, 5) == 0)
1.18 deraadt 240: fputs("ACCT XXXX", ttyout);
1.10 millert 241: else
1.28 millert 242: vfprintf(ttyout, fmt, ap);
1.1 deraadt 243: va_end(ap);
1.18 deraadt 244: putc('\n', ttyout);
245: (void)fflush(ttyout);
1.1 deraadt 246: }
247: if (cout == NULL) {
1.13 millert 248: warnx("No control connection for command.");
1.1 deraadt 249: code = -1;
250: return (0);
251: }
252: oldintr = signal(SIGINT, cmdabort);
1.13 millert 253: #ifdef __STDC__
254: va_start(ap, fmt);
255: #else
1.1 deraadt 256: va_start(ap);
257: fmt = va_arg(ap, char *);
1.13 millert 258: #endif
1.1 deraadt 259: vfprintf(cout, fmt, ap);
260: va_end(ap);
1.11 millert 261: fputs("\r\n", cout);
262: (void)fflush(cout);
1.1 deraadt 263: cpend = 1;
264: r = getreply(!strcmp(fmt, "QUIT"));
265: if (abrtflag && oldintr != SIG_IGN)
266: (*oldintr)(SIGINT);
1.11 millert 267: (void)signal(SIGINT, oldintr);
1.1 deraadt 268: return (r);
269: }
270:
1.10 millert 271: char reply_string[BUFSIZ]; /* first line of previous reply */
1.1 deraadt 272:
273: int
274: getreply(expecteof)
275: int expecteof;
276: {
1.10 millert 277: char current_line[BUFSIZ]; /* last line of previous reply */
278: int c, n, line;
1.1 deraadt 279: int dig;
280: int originalcode = 0, continuation = 0;
281: sig_t oldintr;
282: int pflag = 0;
283: char *cp, *pt = pasv;
284:
1.25 weingart 285: memset(current_line, 0, sizeof(current_line));
1.1 deraadt 286: oldintr = signal(SIGINT, cmdabort);
1.10 millert 287: for (line = 0 ;; line++) {
1.1 deraadt 288: dig = n = code = 0;
1.10 millert 289: cp = current_line;
1.23 millert 290: while ((c = fgetc(cin)) != '\n') {
1.1 deraadt 291: if (c == IAC) { /* handle telnet commands */
1.23 millert 292: switch (c = fgetc(cin)) {
1.1 deraadt 293: case WILL:
294: case WONT:
1.23 millert 295: c = fgetc(cin);
1.1 deraadt 296: fprintf(cout, "%c%c%c", IAC, DONT, c);
1.11 millert 297: (void)fflush(cout);
1.1 deraadt 298: break;
299: case DO:
300: case DONT:
1.23 millert 301: c = fgetc(cin);
1.1 deraadt 302: fprintf(cout, "%c%c%c", IAC, WONT, c);
1.11 millert 303: (void)fflush(cout);
1.1 deraadt 304: break;
305: default:
306: break;
307: }
308: continue;
309: }
310: dig++;
311: if (c == EOF) {
312: if (expecteof) {
1.11 millert 313: (void)signal(SIGINT, oldintr);
1.1 deraadt 314: code = 221;
315: return (0);
316: }
317: lostpeer();
318: if (verbose) {
1.18 deraadt 319: fputs(
320: "421 Service not available, remote server has closed connection.\n", ttyout);
321: (void)fflush(ttyout);
1.1 deraadt 322: }
323: code = 421;
324: return (4);
325: }
1.10 millert 326: if (c != '\r' && (verbose > 0 ||
1.21 mickey 327: ((verbose > -1 && n == '5' && dig > 4)) &&
328: (((!n && c < '5') || (n && n < '5'))
329: || !retry_connect))) {
1.1 deraadt 330: if (proxflag &&
1.10 millert 331: (dig == 1 || (dig == 5 && verbose == 0)))
1.18 deraadt 332: fprintf(ttyout, "%s:", hostname);
333: (void)putc(c, ttyout);
1.1 deraadt 334: }
335: if (dig < 4 && isdigit(c))
336: code = code * 10 + (c - '0');
337: if (!pflag && code == 227)
338: pflag = 1;
339: if (dig > 4 && pflag == 1 && isdigit(c))
340: pflag = 2;
341: if (pflag == 2) {
342: if (c != '\r' && c != ')')
343: *pt++ = c;
344: else {
345: *pt = '\0';
346: pflag = 3;
347: }
348: }
349: if (dig == 4 && c == '-') {
350: if (continuation)
351: code = 0;
352: continuation++;
353: }
1.10 millert 354: if (n == 0)
355: n = c;
356: if (cp < ¤t_line[sizeof(current_line) - 1])
1.1 deraadt 357: *cp++ = c;
358: }
1.11 millert 359: if (verbose > 0 || ((verbose > -1 && n == '5') &&
360: (n < '5' || !retry_connect))) {
1.18 deraadt 361: (void)putc(c, ttyout);
362: (void)fflush (ttyout);
1.1 deraadt 363: }
1.10 millert 364: if (line == 0) {
365: size_t len = cp - current_line;
366:
367: if (len > sizeof(reply_string))
368: len = sizeof(reply_string);
369:
1.11 millert 370: (void)strncpy(reply_string, current_line, len);
1.10 millert 371: reply_string[len] = '\0';
372: }
1.1 deraadt 373: if (continuation && code != originalcode) {
374: if (originalcode == 0)
375: originalcode = code;
376: continue;
377: }
378: *cp = '\0';
379: if (n != '1')
380: cpend = 0;
1.11 millert 381: (void)signal(SIGINT, oldintr);
1.1 deraadt 382: if (code == 421 || originalcode == 421)
383: lostpeer();
384: if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
385: (*oldintr)(SIGINT);
386: return (n - '0');
387: }
388: }
389:
390: int
391: empty(mask, sec)
1.29 art 392: fd_set *mask;
1.1 deraadt 393: int sec;
394: {
395: struct timeval t;
396:
397: t.tv_sec = (long) sec;
398: t.tv_usec = 0;
1.29 art 399: return (select(32, mask, (fd_set *) 0, (fd_set *) 0, &t));
1.1 deraadt 400: }
401:
402: jmp_buf sendabort;
403:
404: void
1.12 millert 405: abortsend(notused)
406: int notused;
1.1 deraadt 407: {
408:
1.10 millert 409: alarmtimer(0);
1.1 deraadt 410: mflag = 0;
411: abrtflag = 0;
1.18 deraadt 412: fputs("\nsend aborted\nwaiting for remote to finish abort.\n", ttyout);
413: (void)fflush(ttyout);
1.1 deraadt 414: longjmp(sendabort, 1);
415: }
416:
417: void
418: sendrequest(cmd, local, remote, printnames)
1.10 millert 419: const char *cmd, *local, *remote;
1.1 deraadt 420: int printnames;
421: {
422: struct stat st;
423: int c, d;
1.20 millert 424: FILE *fin, *dout;
1.1 deraadt 425: int (*closefunc) __P((FILE *));
1.10 millert 426: sig_t oldinti, oldintr, oldintp;
1.20 millert 427: volatile off_t hashbytes;
1.1 deraadt 428: char *lmode, buf[BUFSIZ], *bufp;
1.13 millert 429: int oprogress;
1.1 deraadt 430:
1.20 millert 431: #ifdef __GNUC__ /* XXX: to shut up gcc warnings */
432: (void)&fin;
433: (void)&dout;
434: (void)&closefunc;
435: (void)&oldinti;
436: (void)&oldintr;
437: (void)&oldintp;
438: (void)&lmode;
439: #endif
440:
1.10 millert 441: hashbytes = mark;
442: direction = "sent";
1.20 millert 443: dout = NULL;
1.10 millert 444: bytes = 0;
445: filesize = -1;
1.13 millert 446: oprogress = progress;
1.1 deraadt 447: if (verbose && printnames) {
448: if (local && *local != '-')
1.18 deraadt 449: fprintf(ttyout, "local: %s ", local);
1.1 deraadt 450: if (remote)
1.18 deraadt 451: fprintf(ttyout, "remote: %s\n", remote);
1.1 deraadt 452: }
453: if (proxy) {
454: proxtrans(cmd, local, remote);
455: return;
456: }
457: if (curtype != type)
458: changetype(type, 0);
459: closefunc = NULL;
460: oldintr = NULL;
461: oldintp = NULL;
1.10 millert 462: oldinti = NULL;
1.1 deraadt 463: lmode = "w";
464: if (setjmp(sendabort)) {
465: while (cpend) {
1.11 millert 466: (void)getreply(0);
1.1 deraadt 467: }
468: if (data >= 0) {
1.11 millert 469: (void)close(data);
1.1 deraadt 470: data = -1;
471: }
472: if (oldintr)
1.11 millert 473: (void)signal(SIGINT, oldintr);
1.1 deraadt 474: if (oldintp)
1.11 millert 475: (void)signal(SIGPIPE, oldintp);
1.10 millert 476: if (oldinti)
1.11 millert 477: (void)signal(SIGINFO, oldinti);
1.13 millert 478: progress = oprogress;
1.1 deraadt 479: code = -1;
480: return;
481: }
482: oldintr = signal(SIGINT, abortsend);
1.10 millert 483: oldinti = signal(SIGINFO, psummary);
1.13 millert 484: if (strcmp(local, "-") == 0) {
1.1 deraadt 485: fin = stdin;
1.31 ! millert 486: if (progress == 1)
! 487: progress = 0;
1.13 millert 488: } else if (*local == '|') {
1.10 millert 489: oldintp = signal(SIGPIPE, SIG_IGN);
1.1 deraadt 490: fin = popen(local + 1, "r");
491: if (fin == NULL) {
492: warn("%s", local + 1);
1.11 millert 493: (void)signal(SIGINT, oldintr);
494: (void)signal(SIGPIPE, oldintp);
495: (void)signal(SIGINFO, oldinti);
1.1 deraadt 496: code = -1;
497: return;
498: }
1.31 ! millert 499: if (progress == 1)
! 500: progress = 0;
1.1 deraadt 501: closefunc = pclose;
502: } else {
503: fin = fopen(local, "r");
504: if (fin == NULL) {
505: warn("local: %s", local);
1.11 millert 506: (void)signal(SIGINT, oldintr);
507: (void)signal(SIGINFO, oldinti);
1.1 deraadt 508: code = -1;
509: return;
510: }
511: closefunc = fclose;
512: if (fstat(fileno(fin), &st) < 0 ||
1.14 millert 513: (st.st_mode & S_IFMT) != S_IFREG) {
1.18 deraadt 514: fprintf(ttyout, "%s: not a plain file.\n", local);
1.11 millert 515: (void)signal(SIGINT, oldintr);
516: (void)signal(SIGINFO, oldinti);
1.1 deraadt 517: fclose(fin);
518: code = -1;
519: return;
520: }
1.10 millert 521: filesize = st.st_size;
1.1 deraadt 522: }
523: if (initconn()) {
1.11 millert 524: (void)signal(SIGINT, oldintr);
525: (void)signal(SIGINFO, oldinti);
1.1 deraadt 526: if (oldintp)
1.11 millert 527: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 528: code = -1;
1.13 millert 529: progress = oprogress;
1.1 deraadt 530: if (closefunc != NULL)
531: (*closefunc)(fin);
532: return;
533: }
534: if (setjmp(sendabort))
535: goto abort;
536:
537: if (restart_point &&
538: (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
539: int rc;
540:
1.10 millert 541: rc = -1;
1.1 deraadt 542: switch (curtype) {
543: case TYPE_A:
544: rc = fseek(fin, (long) restart_point, SEEK_SET);
545: break;
546: case TYPE_I:
547: case TYPE_L:
548: rc = lseek(fileno(fin), restart_point, SEEK_SET);
549: break;
550: }
551: if (rc < 0) {
552: warn("local: %s", local);
553: restart_point = 0;
1.13 millert 554: progress = oprogress;
1.1 deraadt 555: if (closefunc != NULL)
556: (*closefunc)(fin);
557: return;
558: }
559: if (command("REST %ld", (long) restart_point)
560: != CONTINUE) {
561: restart_point = 0;
1.13 millert 562: progress = oprogress;
1.1 deraadt 563: if (closefunc != NULL)
564: (*closefunc)(fin);
565: return;
566: }
567: restart_point = 0;
568: lmode = "r+w";
569: }
570: if (remote) {
571: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 572: (void)signal(SIGINT, oldintr);
573: (void)signal(SIGINFO, oldinti);
1.13 millert 574: progress = oprogress;
1.1 deraadt 575: if (oldintp)
1.11 millert 576: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 577: if (closefunc != NULL)
578: (*closefunc)(fin);
579: return;
580: }
581: } else
582: if (command("%s", cmd) != PRELIM) {
1.11 millert 583: (void)signal(SIGINT, oldintr);
584: (void)signal(SIGINFO, oldinti);
1.13 millert 585: progress = oprogress;
1.1 deraadt 586: if (oldintp)
1.11 millert 587: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 588: if (closefunc != NULL)
589: (*closefunc)(fin);
590: return;
591: }
592: dout = dataconn(lmode);
593: if (dout == NULL)
594: goto abort;
1.10 millert 595: progressmeter(-1);
1.1 deraadt 596: oldintp = signal(SIGPIPE, SIG_IGN);
597: switch (curtype) {
598:
599: case TYPE_I:
600: case TYPE_L:
601: errno = d = 0;
1.11 millert 602: while ((c = read(fileno(fin), buf, sizeof(buf))) > 0) {
1.1 deraadt 603: bytes += c;
604: for (bufp = buf; c > 0; c -= d, bufp += d)
1.20 millert 605: if ((d = write(fileno(dout), bufp, (size_t)c))
606: <= 0)
1.1 deraadt 607: break;
1.10 millert 608: if (hash && (!progress || filesize < 0) ) {
1.1 deraadt 609: while (bytes >= hashbytes) {
1.18 deraadt 610: (void)putc('#', ttyout);
1.7 kstailey 611: hashbytes += mark;
1.1 deraadt 612: }
1.18 deraadt 613: (void)fflush(ttyout);
1.1 deraadt 614: }
615: }
1.10 millert 616: if (hash && (!progress || filesize < 0) && bytes > 0) {
1.7 kstailey 617: if (bytes < mark)
1.18 deraadt 618: (void)putc('#', ttyout);
619: (void)putc('\n', ttyout);
620: (void)fflush(ttyout);
1.1 deraadt 621: }
622: if (c < 0)
623: warn("local: %s", local);
624: if (d < 0) {
1.10 millert 625: if (errno != EPIPE)
1.1 deraadt 626: warn("netout");
627: bytes = -1;
628: }
629: break;
630:
631: case TYPE_A:
1.23 millert 632: while ((c = fgetc(fin)) != EOF) {
1.1 deraadt 633: if (c == '\n') {
1.10 millert 634: while (hash && (!progress || filesize < 0) &&
635: (bytes >= hashbytes)) {
1.18 deraadt 636: (void)putc('#', ttyout);
637: (void)fflush(ttyout);
1.7 kstailey 638: hashbytes += mark;
1.1 deraadt 639: }
640: if (ferror(dout))
641: break;
1.11 millert 642: (void)putc('\r', dout);
1.1 deraadt 643: bytes++;
644: }
1.11 millert 645: (void)putc(c, dout);
1.1 deraadt 646: bytes++;
1.10 millert 647: #if 0 /* this violates RFC */
648: if (c == '\r') {
649: (void)putc('\0', dout);
650: bytes++;
651: }
652: #endif
1.1 deraadt 653: }
1.10 millert 654: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 655: if (bytes < hashbytes)
1.18 deraadt 656: (void)putc('#', ttyout);
657: (void)putc('\n', ttyout);
658: (void)fflush(ttyout);
1.1 deraadt 659: }
660: if (ferror(fin))
661: warn("local: %s", local);
662: if (ferror(dout)) {
663: if (errno != EPIPE)
664: warn("netout");
665: bytes = -1;
666: }
667: break;
668: }
1.10 millert 669: progressmeter(1);
1.13 millert 670: progress = oprogress;
1.1 deraadt 671: if (closefunc != NULL)
672: (*closefunc)(fin);
1.11 millert 673: (void)fclose(dout);
674: (void)getreply(0);
675: (void)signal(SIGINT, oldintr);
676: (void)signal(SIGINFO, oldinti);
1.1 deraadt 677: if (oldintp)
1.11 millert 678: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 679: if (bytes > 0)
1.10 millert 680: ptransfer(0);
1.1 deraadt 681: return;
682: abort:
1.11 millert 683: (void)signal(SIGINT, oldintr);
684: (void)signal(SIGINFO, oldinti);
1.13 millert 685: progress = oprogress;
1.1 deraadt 686: if (oldintp)
1.11 millert 687: (void)signal(SIGPIPE, oldintp);
1.1 deraadt 688: if (!cpend) {
689: code = -1;
690: return;
691: }
692: if (data >= 0) {
1.11 millert 693: (void)close(data);
1.1 deraadt 694: data = -1;
695: }
696: if (dout)
1.11 millert 697: (void)fclose(dout);
698: (void)getreply(0);
1.1 deraadt 699: code = -1;
700: if (closefunc != NULL && fin != NULL)
701: (*closefunc)(fin);
702: if (bytes > 0)
1.10 millert 703: ptransfer(0);
1.1 deraadt 704: }
705:
706: jmp_buf recvabort;
707:
708: void
1.12 millert 709: abortrecv(notused)
710: int notused;
1.1 deraadt 711: {
712:
1.10 millert 713: alarmtimer(0);
1.1 deraadt 714: mflag = 0;
715: abrtflag = 0;
1.18 deraadt 716: fputs("\nreceive aborted\nwaiting for remote to finish abort.\n", ttyout);
717: (void)fflush(ttyout);
1.1 deraadt 718: longjmp(recvabort, 1);
719: }
720:
721: void
1.22 millert 722: recvrequest(cmd, local, remote, lmode, printnames, ignorespecial)
1.10 millert 723: const char *cmd, *local, *remote, *lmode;
1.22 millert 724: int printnames, ignorespecial;
1.1 deraadt 725: {
1.20 millert 726: FILE *fout, *din;
1.1 deraadt 727: int (*closefunc) __P((FILE *));
1.10 millert 728: sig_t oldinti, oldintr, oldintp;
1.20 millert 729: int c, d;
730: volatile int is_retr, tcrflag, bare_lfs;
731: static size_t bufsize;
1.1 deraadt 732: static char *buf;
1.20 millert 733: volatile off_t hashbytes;
1.1 deraadt 734: struct stat st;
1.10 millert 735: time_t mtime;
1.13 millert 736: int oprogress;
1.16 millert 737: int opreserve;
1.1 deraadt 738:
1.20 millert 739: #ifdef __GNUC__ /* XXX: to shut up gcc warnings */
740: (void)&local;
741: (void)&fout;
742: (void)&din;
743: (void)&closefunc;
744: (void)&oldinti;
745: (void)&oldintr;
746: (void)&oldintp;
747: #endif
748:
749: fout = NULL;
750: din = NULL;
751: oldinti = NULL;
1.10 millert 752: hashbytes = mark;
753: direction = "received";
754: bytes = 0;
1.20 millert 755: bare_lfs = 0;
1.10 millert 756: filesize = -1;
1.13 millert 757: oprogress = progress;
1.16 millert 758: opreserve = preserve;
1.1 deraadt 759: is_retr = strcmp(cmd, "RETR") == 0;
760: if (is_retr && verbose && printnames) {
1.22 millert 761: if (local && (ignorespecial || *local != '-'))
1.18 deraadt 762: fprintf(ttyout, "local: %s ", local);
1.1 deraadt 763: if (remote)
1.18 deraadt 764: fprintf(ttyout, "remote: %s\n", remote);
1.1 deraadt 765: }
766: if (proxy && is_retr) {
767: proxtrans(cmd, local, remote);
768: return;
769: }
770: closefunc = NULL;
771: oldintr = NULL;
772: oldintp = NULL;
773: tcrflag = !crflag && is_retr;
774: if (setjmp(recvabort)) {
775: while (cpend) {
1.11 millert 776: (void)getreply(0);
1.1 deraadt 777: }
778: if (data >= 0) {
1.11 millert 779: (void)close(data);
1.1 deraadt 780: data = -1;
781: }
782: if (oldintr)
1.11 millert 783: (void)signal(SIGINT, oldintr);
1.10 millert 784: if (oldinti)
1.11 millert 785: (void)signal(SIGINFO, oldinti);
1.15 millert 786: progress = oprogress;
1.16 millert 787: preserve = opreserve;
1.1 deraadt 788: code = -1;
789: return;
790: }
791: oldintr = signal(SIGINT, abortrecv);
1.10 millert 792: oldinti = signal(SIGINFO, psummary);
1.22 millert 793: if (ignorespecial || (strcmp(local, "-") && *local != '|')) {
794: if (access(local, W_OK) < 0) {
1.1 deraadt 795: char *dir = strrchr(local, '/');
796:
797: if (errno != ENOENT && errno != EACCES) {
798: warn("local: %s", local);
1.11 millert 799: (void)signal(SIGINT, oldintr);
800: (void)signal(SIGINFO, oldinti);
1.1 deraadt 801: code = -1;
802: return;
803: }
804: if (dir != NULL)
805: *dir = 0;
1.22 millert 806: d = access(dir == local ? "/" : dir ? local : ".", W_OK);
1.1 deraadt 807: if (dir != NULL)
808: *dir = '/';
809: if (d < 0) {
810: warn("local: %s", local);
1.11 millert 811: (void)signal(SIGINT, oldintr);
812: (void)signal(SIGINFO, oldinti);
1.1 deraadt 813: code = -1;
814: return;
815: }
816: if (!runique && errno == EACCES &&
1.20 millert 817: chmod(local, (S_IRUSR|S_IWUSR)) < 0) {
1.1 deraadt 818: warn("local: %s", local);
1.11 millert 819: (void)signal(SIGINT, oldintr);
820: (void)signal(SIGINFO, oldinti);
1.1 deraadt 821: code = -1;
822: return;
823: }
824: if (runique && errno == EACCES &&
825: (local = gunique(local)) == NULL) {
1.11 millert 826: (void)signal(SIGINT, oldintr);
827: (void)signal(SIGINFO, oldinti);
1.1 deraadt 828: code = -1;
829: return;
830: }
831: }
832: else if (runique && (local = gunique(local)) == NULL) {
1.11 millert 833: (void)signal(SIGINT, oldintr);
834: (void)signal(SIGINFO, oldinti);
1.1 deraadt 835: code = -1;
836: return;
837: }
838: }
839: if (!is_retr) {
840: if (curtype != TYPE_A)
841: changetype(TYPE_A, 0);
1.10 millert 842: } else {
843: if (curtype != type)
844: changetype(type, 0);
845: filesize = remotesize(remote, 0);
846: }
1.1 deraadt 847: if (initconn()) {
1.11 millert 848: (void)signal(SIGINT, oldintr);
849: (void)signal(SIGINFO, oldinti);
1.1 deraadt 850: code = -1;
851: return;
852: }
853: if (setjmp(recvabort))
854: goto abort;
855: if (is_retr && restart_point &&
856: command("REST %ld", (long) restart_point) != CONTINUE)
857: return;
858: if (remote) {
859: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 860: (void)signal(SIGINT, oldintr);
861: (void)signal(SIGINFO, oldinti);
1.1 deraadt 862: return;
863: }
864: } else {
865: if (command("%s", cmd) != PRELIM) {
1.11 millert 866: (void)signal(SIGINT, oldintr);
867: (void)signal(SIGINFO, oldinti);
1.1 deraadt 868: return;
869: }
870: }
871: din = dataconn("r");
872: if (din == NULL)
873: goto abort;
1.22 millert 874: if (!ignorespecial && strcmp(local, "-") == 0) {
1.1 deraadt 875: fout = stdout;
1.16 millert 876: preserve = 0;
1.22 millert 877: } else if (!ignorespecial && *local == '|') {
1.1 deraadt 878: oldintp = signal(SIGPIPE, SIG_IGN);
879: fout = popen(local + 1, "w");
880: if (fout == NULL) {
881: warn("%s", local+1);
882: goto abort;
883: }
1.31 ! millert 884: if (progress == 1)
! 885: progress = 0;
1.16 millert 886: preserve = 0;
1.1 deraadt 887: closefunc = pclose;
888: } else {
889: fout = fopen(local, lmode);
890: if (fout == NULL) {
891: warn("local: %s", local);
892: goto abort;
893: }
894: closefunc = fclose;
895: }
896: if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
897: st.st_blksize = BUFSIZ;
898: if (st.st_blksize > bufsize) {
899: if (buf)
1.11 millert 900: (void)free(buf);
1.1 deraadt 901: buf = malloc((unsigned)st.st_blksize);
902: if (buf == NULL) {
903: warn("malloc");
904: bufsize = 0;
905: goto abort;
906: }
907: bufsize = st.st_blksize;
908: }
1.14 millert 909: if ((st.st_mode & S_IFMT) != S_IFREG) {
1.31 ! millert 910: if (progress == 1)
! 911: progress = 0;
1.13 millert 912: preserve = 0;
913: }
1.10 millert 914: progressmeter(-1);
1.1 deraadt 915: switch (curtype) {
916:
917: case TYPE_I:
918: case TYPE_L:
919: if (restart_point &&
920: lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
921: warn("local: %s", local);
1.13 millert 922: progress = oprogress;
1.16 millert 923: preserve = opreserve;
1.1 deraadt 924: if (closefunc != NULL)
925: (*closefunc)(fout);
926: return;
927: }
928: errno = d = 0;
929: while ((c = read(fileno(din), buf, bufsize)) > 0) {
1.20 millert 930: if ((d = write(fileno(fout), buf, (size_t)c)) != c)
1.1 deraadt 931: break;
932: bytes += c;
1.10 millert 933: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 934: while (bytes >= hashbytes) {
1.18 deraadt 935: (void)putc('#', ttyout);
1.7 kstailey 936: hashbytes += mark;
1.1 deraadt 937: }
1.18 deraadt 938: (void)fflush(ttyout);
1.1 deraadt 939: }
940: }
1.10 millert 941: if (hash && (!progress || filesize < 0) && bytes > 0) {
1.7 kstailey 942: if (bytes < mark)
1.18 deraadt 943: (void)putc('#', ttyout);
944: (void)putc('\n', ttyout);
945: (void)fflush(ttyout);
1.1 deraadt 946: }
947: if (c < 0) {
948: if (errno != EPIPE)
949: warn("netin");
950: bytes = -1;
951: }
952: if (d < c) {
953: if (d < 0)
954: warn("local: %s", local);
955: else
956: warnx("%s: short write", local);
957: }
958: break;
959:
960: case TYPE_A:
961: if (restart_point) {
962: int i, n, ch;
963:
964: if (fseek(fout, 0L, SEEK_SET) < 0)
965: goto done;
966: n = restart_point;
967: for (i = 0; i++ < n;) {
1.23 millert 968: if ((ch = fgetc(fout)) == EOF)
1.1 deraadt 969: goto done;
970: if (ch == '\n')
971: i++;
972: }
973: if (fseek(fout, 0L, SEEK_CUR) < 0) {
974: done:
975: warn("local: %s", local);
1.13 millert 976: progress = oprogress;
1.16 millert 977: preserve = opreserve;
1.1 deraadt 978: if (closefunc != NULL)
979: (*closefunc)(fout);
980: return;
981: }
982: }
1.23 millert 983: while ((c = fgetc(din)) != EOF) {
1.1 deraadt 984: if (c == '\n')
985: bare_lfs++;
986: while (c == '\r') {
1.10 millert 987: while (hash && (!progress || filesize < 0) &&
988: (bytes >= hashbytes)) {
1.18 deraadt 989: (void)putc('#', ttyout);
990: (void)fflush(ttyout);
1.7 kstailey 991: hashbytes += mark;
1.1 deraadt 992: }
993: bytes++;
1.23 millert 994: if ((c = fgetc(din)) != '\n' || tcrflag) {
1.1 deraadt 995: if (ferror(fout))
996: goto break2;
1.11 millert 997: (void)putc('\r', fout);
1.1 deraadt 998: if (c == '\0') {
999: bytes++;
1000: goto contin2;
1001: }
1002: if (c == EOF)
1003: goto contin2;
1004: }
1005: }
1.11 millert 1006: (void)putc(c, fout);
1.1 deraadt 1007: bytes++;
1008: contin2: ;
1009: }
1010: break2:
1011: if (bare_lfs) {
1.22 millert 1012: fprintf(ttyout,
1.13 millert 1013: "WARNING! %d bare linefeeds received in ASCII mode.\n", bare_lfs);
1.22 millert 1014: fputs("File may not have transferred correctly.\n",
1015: ttyout);
1.1 deraadt 1016: }
1.10 millert 1017: if (hash && (!progress || filesize < 0)) {
1.1 deraadt 1018: if (bytes < hashbytes)
1.18 deraadt 1019: (void)putc('#', ttyout);
1020: (void)putc('\n', ttyout);
1021: (void)fflush(ttyout);
1.1 deraadt 1022: }
1023: if (ferror(din)) {
1024: if (errno != EPIPE)
1025: warn("netin");
1026: bytes = -1;
1027: }
1028: if (ferror(fout))
1029: warn("local: %s", local);
1030: break;
1031: }
1.10 millert 1032: progressmeter(1);
1.13 millert 1033: progress = oprogress;
1.16 millert 1034: preserve = opreserve;
1.1 deraadt 1035: if (closefunc != NULL)
1036: (*closefunc)(fout);
1.11 millert 1037: (void)signal(SIGINT, oldintr);
1038: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1039: if (oldintp)
1.11 millert 1040: (void)signal(SIGPIPE, oldintp);
1041: (void)fclose(din);
1042: (void)getreply(0);
1.10 millert 1043: if (bytes >= 0 && is_retr) {
1044: if (bytes > 0)
1045: ptransfer(0);
1046: if (preserve && (closefunc == fclose)) {
1047: mtime = remotemodtime(remote, 0);
1048: if (mtime != -1) {
1.12 millert 1049: struct utimbuf ut;
1050:
1051: ut.actime = time(NULL);
1052: ut.modtime = mtime;
1053: if (utime(local, &ut) == -1)
1.22 millert 1054: fprintf(ttyout,
1.13 millert 1055: "Can't change modification time on %s to %s",
1.11 millert 1056: local, asctime(localtime(&mtime)));
1.10 millert 1057: }
1058: }
1059: }
1.1 deraadt 1060: return;
1.13 millert 1061:
1.1 deraadt 1062: abort:
1063:
1.10 millert 1064: /* abort using RFC959 recommended IP,SYNC sequence */
1.1 deraadt 1065:
1.13 millert 1066: progress = oprogress;
1.16 millert 1067: preserve = opreserve;
1.1 deraadt 1068: if (oldintp)
1.11 millert 1069: (void)signal(SIGPIPE, oldintp);
1070: (void)signal(SIGINT, SIG_IGN);
1.1 deraadt 1071: if (!cpend) {
1072: code = -1;
1.11 millert 1073: (void)signal(SIGINT, oldintr);
1074: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1075: return;
1076: }
1077:
1078: abort_remote(din);
1079: code = -1;
1080: if (data >= 0) {
1.11 millert 1081: (void)close(data);
1.1 deraadt 1082: data = -1;
1083: }
1084: if (closefunc != NULL && fout != NULL)
1085: (*closefunc)(fout);
1086: if (din)
1.11 millert 1087: (void)fclose(din);
1.1 deraadt 1088: if (bytes > 0)
1.10 millert 1089: ptransfer(0);
1.11 millert 1090: (void)signal(SIGINT, oldintr);
1091: (void)signal(SIGINFO, oldinti);
1.1 deraadt 1092: }
1093:
1094: /*
1095: * Need to start a listen on the data channel before we send the command,
1096: * otherwise the server's connect may fail.
1097: */
1098: int
1099: initconn()
1100: {
1101: char *p, *a;
1102: int result, len, tmpno = 0;
1103: int on = 1;
1104: int a0, a1, a2, a3, p0, p1;
1105:
1.24 millert 1106: reinit:
1.1 deraadt 1107: if (passivemode) {
1108: data = socket(AF_INET, SOCK_STREAM, 0);
1109: if (data < 0) {
1.10 millert 1110: warn("socket");
1111: return (1);
1.1 deraadt 1112: }
1113: if ((options & SO_DEBUG) &&
1114: setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
1.11 millert 1115: sizeof(on)) < 0)
1.10 millert 1116: warn("setsockopt (ignored)");
1.1 deraadt 1117: if (command("PASV") != COMPLETE) {
1.24 millert 1118: if (activefallback) {
1119: (void)close(data);
1120: data = -1;
1121: passivemode = 0;
1122: activefallback = 0;
1123: goto reinit;
1124: }
1.18 deraadt 1125: fputs("Passive mode refused.\n", ttyout);
1.1 deraadt 1126: goto bad;
1127: }
1128:
1129: /*
1130: * What we've got at this point is a string of comma
1131: * separated one-byte unsigned integer values.
1132: * The first four are the an IP address. The fifth is
1133: * the MSB of the port number, the sixth is the LSB.
1134: * From that we'll prepare a sockaddr_in.
1135: */
1136:
1.10 millert 1137: if (sscanf(pasv, "%d,%d,%d,%d,%d,%d",
1.1 deraadt 1138: &a0, &a1, &a2, &a3, &p0, &p1) != 6) {
1.18 deraadt 1139: fputs(
1140: "Passive mode address scan failure. Shouldn't happen!\n", ttyout);
1.1 deraadt 1141: goto bad;
1142: }
1143:
1.10 millert 1144: memset(&data_addr, 0, sizeof(data_addr));
1.1 deraadt 1145: data_addr.sin_family = AF_INET;
1146: a = (char *)&data_addr.sin_addr.s_addr;
1147: a[0] = a0 & 0xff;
1148: a[1] = a1 & 0xff;
1149: a[2] = a2 & 0xff;
1150: a[3] = a3 & 0xff;
1151: p = (char *)&data_addr.sin_port;
1152: p[0] = p0 & 0xff;
1153: p[1] = p1 & 0xff;
1154:
1.27 deraadt 1155: while (connect(data, (struct sockaddr *)&data_addr,
1.1 deraadt 1156: sizeof(data_addr)) < 0) {
1.27 deraadt 1157: if (errno == EINTR)
1158: continue;
1.10 millert 1159: warn("connect");
1.1 deraadt 1160: goto bad;
1161: }
1162: #ifdef IP_TOS
1163: on = IPTOS_THROUGHPUT;
1164: if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on,
1165: sizeof(int)) < 0)
1.10 millert 1166: warn("setsockopt TOS (ignored)");
1.1 deraadt 1167: #endif
1.10 millert 1168: return (0);
1.1 deraadt 1169: }
1170:
1171: noport:
1172: data_addr = myctladdr;
1173: if (sendport)
1.10 millert 1174: data_addr.sin_port = 0; /* let system pick one */
1.1 deraadt 1175: if (data != -1)
1.11 millert 1176: (void)close(data);
1.1 deraadt 1177: data = socket(AF_INET, SOCK_STREAM, 0);
1178: if (data < 0) {
1179: warn("socket");
1180: if (tmpno)
1181: sendport = 1;
1182: return (1);
1183: }
1184: if (!sendport)
1.10 millert 1185: if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on,
1.11 millert 1186: sizeof(on)) < 0) {
1.1 deraadt 1187: warn("setsockopt (reuse address)");
1188: goto bad;
1189: }
1.11 millert 1190: if (bind(data, (struct sockaddr *)&data_addr, sizeof(data_addr)) < 0) {
1.1 deraadt 1191: warn("bind");
1192: goto bad;
1193: }
1194: if (options & SO_DEBUG &&
1.10 millert 1195: setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
1.11 millert 1196: sizeof(on)) < 0)
1.1 deraadt 1197: warn("setsockopt (ignored)");
1.11 millert 1198: len = sizeof(data_addr);
1.1 deraadt 1199: if (getsockname(data, (struct sockaddr *)&data_addr, &len) < 0) {
1200: warn("getsockname");
1201: goto bad;
1202: }
1203: if (listen(data, 1) < 0)
1204: warn("listen");
1205: if (sendport) {
1206: a = (char *)&data_addr.sin_addr;
1207: p = (char *)&data_addr.sin_port;
1208: #define UC(b) (((int)b)&0xff)
1209: result =
1210: command("PORT %d,%d,%d,%d,%d,%d",
1211: UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
1212: UC(p[0]), UC(p[1]));
1213: if (result == ERROR && sendport == -1) {
1214: sendport = 0;
1215: tmpno = 1;
1216: goto noport;
1217: }
1218: return (result != COMPLETE);
1219: }
1220: if (tmpno)
1221: sendport = 1;
1222: #ifdef IP_TOS
1223: on = IPTOS_THROUGHPUT;
1224: if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
1225: warn("setsockopt TOS (ignored)");
1226: #endif
1227: return (0);
1228: bad:
1.11 millert 1229: (void)close(data), data = -1;
1.1 deraadt 1230: if (tmpno)
1231: sendport = 1;
1232: return (1);
1233: }
1234:
1235: FILE *
1236: dataconn(lmode)
1.10 millert 1237: const char *lmode;
1.1 deraadt 1238: {
1239: struct sockaddr_in from;
1.13 millert 1240: int s, fromlen, tos;
1241:
1242: fromlen = sizeof(from);
1.1 deraadt 1243:
1244: if (passivemode)
1245: return (fdopen(data, lmode));
1246:
1247: s = accept(data, (struct sockaddr *) &from, &fromlen);
1248: if (s < 0) {
1249: warn("accept");
1.11 millert 1250: (void)close(data), data = -1;
1.1 deraadt 1251: return (NULL);
1252: }
1.11 millert 1253: (void)close(data);
1.1 deraadt 1254: data = s;
1255: #ifdef IP_TOS
1256: tos = IPTOS_THROUGHPUT;
1257: if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
1258: warn("setsockopt TOS (ignored)");
1259: #endif
1260: return (fdopen(data, lmode));
1261: }
1262:
1263: void
1.10 millert 1264: psummary(notused)
1265: int notused;
1.1 deraadt 1266: {
1.26 deraadt 1267: int save_errno = errno;
1.10 millert 1268:
1269: if (bytes > 0)
1270: ptransfer(1);
1.26 deraadt 1271: errno = save_errno;
1.1 deraadt 1272: }
1273:
1274: void
1.12 millert 1275: psabort(notused)
1276: int notused;
1.1 deraadt 1277: {
1278:
1.10 millert 1279: alarmtimer(0);
1.1 deraadt 1280: abrtflag++;
1281: }
1282:
1283: void
1284: pswitch(flag)
1285: int flag;
1286: {
1287: sig_t oldintr;
1288: static struct comvars {
1289: int connect;
1290: char name[MAXHOSTNAMELEN];
1291: struct sockaddr_in mctl;
1292: struct sockaddr_in hctl;
1293: FILE *in;
1294: FILE *out;
1295: int tpe;
1296: int curtpe;
1297: int cpnd;
1298: int sunqe;
1299: int runqe;
1300: int mcse;
1301: int ntflg;
1302: char nti[17];
1303: char nto[17];
1304: int mapflg;
1305: char mi[MAXPATHLEN];
1306: char mo[MAXPATHLEN];
1307: } proxstruct, tmpstruct;
1308: struct comvars *ip, *op;
1309:
1310: abrtflag = 0;
1311: oldintr = signal(SIGINT, psabort);
1312: if (flag) {
1313: if (proxy)
1314: return;
1315: ip = &tmpstruct;
1316: op = &proxstruct;
1317: proxy++;
1318: } else {
1319: if (!proxy)
1320: return;
1321: ip = &proxstruct;
1322: op = &tmpstruct;
1323: proxy = 0;
1324: }
1325: ip->connect = connected;
1326: connected = op->connect;
1327: if (hostname) {
1.11 millert 1328: (void)strncpy(ip->name, hostname, sizeof(ip->name) - 1);
1329: ip->name[sizeof(ip->name) - 1] = '\0';
1.1 deraadt 1330: } else
1.11 millert 1331: ip->name[0] = '\0';
1.1 deraadt 1332: hostname = op->name;
1333: ip->hctl = hisctladdr;
1334: hisctladdr = op->hctl;
1335: ip->mctl = myctladdr;
1336: myctladdr = op->mctl;
1337: ip->in = cin;
1338: cin = op->in;
1339: ip->out = cout;
1340: cout = op->out;
1341: ip->tpe = type;
1342: type = op->tpe;
1343: ip->curtpe = curtype;
1344: curtype = op->curtpe;
1345: ip->cpnd = cpend;
1346: cpend = op->cpnd;
1347: ip->sunqe = sunique;
1348: sunique = op->sunqe;
1349: ip->runqe = runique;
1350: runique = op->runqe;
1351: ip->mcse = mcase;
1352: mcase = op->mcse;
1353: ip->ntflg = ntflag;
1354: ntflag = op->ntflg;
1.11 millert 1355: (void)strncpy(ip->nti, ntin, sizeof(ip->nti) - 1);
1356: (ip->nti)[sizeof(ip->nti) - 1] = '\0';
1357: (void)strcpy(ntin, op->nti);
1358: (void)strncpy(ip->nto, ntout, sizeof(ip->nto) - 1);
1359: (ip->nto)[sizeof(ip->nto) - 1] = '\0';
1360: (void)strcpy(ntout, op->nto);
1.1 deraadt 1361: ip->mapflg = mapflag;
1362: mapflag = op->mapflg;
1.11 millert 1363: (void)strncpy(ip->mi, mapin, sizeof(ip->mi) - 1);
1364: (ip->mi)[sizeof(ip->mi) - 1] = '\0';
1365: (void)strcpy(mapin, op->mi);
1366: (void)strncpy(ip->mo, mapout, sizeof(ip->mo) - 1);
1367: (ip->mo)[sizeof(ip->mo) - 1] = '\0';
1368: (void)strcpy(mapout, op->mo);
1369: (void)signal(SIGINT, oldintr);
1.1 deraadt 1370: if (abrtflag) {
1371: abrtflag = 0;
1372: (*oldintr)(SIGINT);
1373: }
1374: }
1375:
1376: void
1.12 millert 1377: abortpt(notused)
1378: int notused;
1.1 deraadt 1379: {
1380:
1.10 millert 1381: alarmtimer(0);
1.18 deraadt 1382: putc('\n', ttyout);
1383: (void)fflush(ttyout);
1.1 deraadt 1384: ptabflg++;
1385: mflag = 0;
1386: abrtflag = 0;
1387: longjmp(ptabort, 1);
1388: }
1389:
1390: void
1391: proxtrans(cmd, local, remote)
1.10 millert 1392: const char *cmd, *local, *remote;
1.1 deraadt 1393: {
1394: sig_t oldintr;
1.20 millert 1395: int prox_type, nfnd;
1396: volatile int secndflag;
1.1 deraadt 1397: char *cmd2;
1.29 art 1398: fd_set mask;
1.1 deraadt 1399:
1.20 millert 1400: #ifdef __GNUC__ /* XXX: to shut up gcc warnings */
1401: (void)&oldintr;
1402: (void)&cmd2;
1403: #endif
1404:
1405: oldintr = NULL;
1406: secndflag = 0;
1.1 deraadt 1407: if (strcmp(cmd, "RETR"))
1408: cmd2 = "RETR";
1409: else
1410: cmd2 = runique ? "STOU" : "STOR";
1411: if ((prox_type = type) == 0) {
1412: if (unix_server && unix_proxy)
1413: prox_type = TYPE_I;
1414: else
1415: prox_type = TYPE_A;
1416: }
1417: if (curtype != prox_type)
1418: changetype(prox_type, 1);
1419: if (command("PASV") != COMPLETE) {
1.18 deraadt 1420: fputs("proxy server does not support third party transfers.\n",
1421: ttyout);
1.1 deraadt 1422: return;
1423: }
1424: pswitch(0);
1425: if (!connected) {
1.18 deraadt 1426: fputs("No primary connection.\n", ttyout);
1.1 deraadt 1427: pswitch(1);
1428: code = -1;
1429: return;
1430: }
1431: if (curtype != prox_type)
1432: changetype(prox_type, 1);
1433: if (command("PORT %s", pasv) != COMPLETE) {
1434: pswitch(1);
1435: return;
1436: }
1437: if (setjmp(ptabort))
1438: goto abort;
1439: oldintr = signal(SIGINT, abortpt);
1440: if (command("%s %s", cmd, remote) != PRELIM) {
1.11 millert 1441: (void)signal(SIGINT, oldintr);
1.1 deraadt 1442: pswitch(1);
1443: return;
1444: }
1445: sleep(2);
1446: pswitch(1);
1447: secndflag++;
1448: if (command("%s %s", cmd2, local) != PRELIM)
1449: goto abort;
1450: ptflag++;
1.11 millert 1451: (void)getreply(0);
1.1 deraadt 1452: pswitch(0);
1.11 millert 1453: (void)getreply(0);
1454: (void)signal(SIGINT, oldintr);
1.1 deraadt 1455: pswitch(1);
1456: ptflag = 0;
1.18 deraadt 1457: fprintf(ttyout, "local: %s remote: %s\n", local, remote);
1.1 deraadt 1458: return;
1459: abort:
1.11 millert 1460: (void)signal(SIGINT, SIG_IGN);
1.1 deraadt 1461: ptflag = 0;
1462: if (strcmp(cmd, "RETR") && !proxy)
1463: pswitch(1);
1464: else if (!strcmp(cmd, "RETR") && proxy)
1465: pswitch(0);
1466: if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
1467: if (command("%s %s", cmd2, local) != PRELIM) {
1468: pswitch(0);
1469: if (cpend)
1.19 kstailey 1470: abort_remote(NULL);
1.1 deraadt 1471: }
1472: pswitch(1);
1473: if (ptabflg)
1474: code = -1;
1.11 millert 1475: (void)signal(SIGINT, oldintr);
1.1 deraadt 1476: return;
1477: }
1478: if (cpend)
1.19 kstailey 1479: abort_remote(NULL);
1.1 deraadt 1480: pswitch(!proxy);
1481: if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
1482: if (command("%s %s", cmd2, local) != PRELIM) {
1483: pswitch(0);
1484: if (cpend)
1.19 kstailey 1485: abort_remote(NULL);
1.1 deraadt 1486: pswitch(1);
1487: if (ptabflg)
1488: code = -1;
1.11 millert 1489: (void)signal(SIGINT, oldintr);
1.1 deraadt 1490: return;
1491: }
1492: }
1493: if (cpend)
1.19 kstailey 1494: abort_remote(NULL);
1.1 deraadt 1495: pswitch(!proxy);
1496: if (cpend) {
1497: FD_ZERO(&mask);
1498: FD_SET(fileno(cin), &mask);
1499: if ((nfnd = empty(&mask, 10)) <= 0) {
1500: if (nfnd < 0) {
1501: warn("abort");
1502: }
1503: if (ptabflg)
1504: code = -1;
1505: lostpeer();
1506: }
1.11 millert 1507: (void)getreply(0);
1508: (void)getreply(0);
1.1 deraadt 1509: }
1510: if (proxy)
1511: pswitch(0);
1512: pswitch(1);
1513: if (ptabflg)
1514: code = -1;
1.11 millert 1515: (void)signal(SIGINT, oldintr);
1.1 deraadt 1516: }
1517:
1518: void
1519: reset(argc, argv)
1520: int argc;
1521: char *argv[];
1522: {
1.29 art 1523: fd_set mask;
1.1 deraadt 1524: int nfnd = 1;
1525:
1526: FD_ZERO(&mask);
1527: while (nfnd > 0) {
1528: FD_SET(fileno(cin), &mask);
1.10 millert 1529: if ((nfnd = empty(&mask, 0)) < 0) {
1.1 deraadt 1530: warn("reset");
1531: code = -1;
1532: lostpeer();
1533: }
1534: else if (nfnd) {
1.11 millert 1535: (void)getreply(0);
1.1 deraadt 1536: }
1537: }
1538: }
1539:
1540: char *
1541: gunique(local)
1.10 millert 1542: const char *local;
1.1 deraadt 1543: {
1544: static char new[MAXPATHLEN];
1545: char *cp = strrchr(local, '/');
1546: int d, count=0;
1547: char ext = '1';
1548:
1549: if (cp)
1550: *cp = '\0';
1.22 millert 1551: d = access(cp == local ? "/" : cp ? local : ".", W_OK);
1.1 deraadt 1552: if (cp)
1553: *cp = '/';
1554: if (d < 0) {
1555: warn("local: %s", local);
1556: return ((char *) 0);
1557: }
1.11 millert 1558: (void)strcpy(new, local);
1.1 deraadt 1559: cp = new + strlen(new);
1560: *cp++ = '.';
1561: while (!d) {
1562: if (++count == 100) {
1.18 deraadt 1563: fputs("runique: can't find unique file name.\n", ttyout);
1.1 deraadt 1564: return ((char *) 0);
1565: }
1566: *cp++ = ext;
1567: *cp = '\0';
1568: if (ext == '9')
1569: ext = '0';
1570: else
1571: ext++;
1.22 millert 1572: if ((d = access(new, F_OK)) < 0)
1.1 deraadt 1573: break;
1574: if (ext != '0')
1575: cp--;
1576: else if (*(cp - 2) == '.')
1577: *(cp - 1) = '1';
1578: else {
1579: *(cp - 2) = *(cp - 2) + 1;
1580: cp--;
1581: }
1582: }
1583: return (new);
1584: }
1585:
1586: void
1587: abort_remote(din)
1588: FILE *din;
1589: {
1590: char buf[BUFSIZ];
1591: int nfnd;
1.29 art 1592: fd_set mask;
1.13 millert 1593:
1594: if (cout == NULL) {
1595: warnx("Lost control connection for abort.");
1596: if (ptabflg)
1597: code = -1;
1598: lostpeer();
1599: return;
1600: }
1.1 deraadt 1601:
1602: /*
1603: * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
1604: * after urgent byte rather than before as is protocol now
1605: */
1606: sprintf(buf, "%c%c%c", IAC, IP, IAC);
1607: if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
1608: warn("abort");
1.10 millert 1609: fprintf(cout, "%cABOR\r\n", DM);
1.11 millert 1610: (void)fflush(cout);
1.1 deraadt 1611: FD_ZERO(&mask);
1612: FD_SET(fileno(cin), &mask);
1.10 millert 1613: if (din) {
1.1 deraadt 1614: FD_SET(fileno(din), &mask);
1615: }
1616: if ((nfnd = empty(&mask, 10)) <= 0) {
1617: if (nfnd < 0) {
1618: warn("abort");
1619: }
1620: if (ptabflg)
1621: code = -1;
1622: lostpeer();
1623: }
1624: if (din && FD_ISSET(fileno(din), &mask)) {
1625: while (read(fileno(din), buf, BUFSIZ) > 0)
1626: /* LOOP */;
1627: }
1628: if (getreply(0) == ERROR && code == 552) {
1629: /* 552 needed for nic style abort */
1.11 millert 1630: (void)getreply(0);
1.1 deraadt 1631: }
1.11 millert 1632: (void)getreply(0);
1.1 deraadt 1633: }
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