1/* $NetBSD: rcp.c,v 1.49 2012/05/07 15:22:54 chs Exp $ */
2
3/*
4 * Copyright (c) 1983, 1990, 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1983, 1990, 1992, 1993\
35 The Regents of the University of California. All rights reserved.");
36#endif /* not lint */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)rcp.c 8.2 (Berkeley) 4/2/94";
41#else
42__RCSID("$NetBSD: rcp.c,v 1.49 2012/05/07 15:22:54 chs Exp $");
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/stat.h>
48#include <sys/time.h>
49#include <sys/socket.h>
50#include <netinet/in.h>
51#include <netinet/in_systm.h>
52#include <netinet/ip.h>
53
54#include <ctype.h>
55#include <dirent.h>
56#include <err.h>
57#include <errno.h>
58#include <fcntl.h>
59#include <locale.h>
60#include <netdb.h>
61#include <pwd.h>
62#include <signal.h>
63#include <stdio.h>
64#include <stdlib.h>
65#include <string.h>
66#include <unistd.h>
67
68#include "pathnames.h"
69#include "extern.h"
70
71#define OPTIONS "46dfprt"
72
73struct passwd *pwd;
74char *pwname;
75u_short port;
76uid_t userid;
77int errs, rem;
78int pflag, iamremote, iamrecursive, targetshouldbedirectory;
79int family = AF_UNSPEC;
80static char dot[] = ".";
81
82#define CMDNEEDS 64
83char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
84
85int response(void);
86void rsource(char *, struct stat *);
87void sink(int, char *[]);
88void source(int, char *[]);
89void tolocal(int, char *[]);
90void toremote(char *, int, char *[]);
91void usage(void);
92
93int
94main(int argc, char *argv[])
95{
96 struct servent *sp;
97 int ch, fflag, tflag;
98 char *targ;
99 const char *shell;
100
101 setprogname(argv[0]);
102 (void)setlocale(LC_ALL, "");
103
104 fflag = tflag = 0;
105 while ((ch = getopt(argc, argv, OPTIONS)) != -1)
106 switch(ch) { /* User-visible flags. */
107 case '4':
108 family = AF_INET;
109 break;
110 case '6':
111 family = AF_INET6;
112 break;
113 case 'K':
114 break;
115 case 'p':
116 pflag = 1;
117 break;
118 case 'r':
119 iamrecursive = 1;
120 break;
121 /* Server options. */
122 case 'd':
123 targetshouldbedirectory = 1;
124 break;
125 case 'f': /* "from" */
126 iamremote = 1;
127 fflag = 1;
128 break;
129 case 't': /* "to" */
130 iamremote = 1;
131 tflag = 1;
132 break;
133 case '?':
134 default:
135 usage();
136 }
137 argc -= optind;
138 argv += optind;
139
140 sp = getservbyname(shell = "shell", "tcp");
141 if (sp == NULL)
142 errx(1, "%s/tcp: unknown service", shell);
143 port = sp->s_port;
144
145 if ((pwd = getpwuid(userid = getuid())) == NULL)
146 errx(1, "unknown user %d", (int)userid);
147
148 if ((pwname = strdup(pwd->pw_name)) == NULL)
149 err(1, NULL);
150
151 rem = STDIN_FILENO; /* XXX */
152
153 if (fflag) { /* Follow "protocol", send data. */
154 (void)response();
155 source(argc, argv);
156 exit(errs);
157 }
158
159 if (tflag) { /* Receive data. */
160 sink(argc, argv);
161 exit(errs);
162 }
163
164 if (argc < 2)
165 usage();
166 if (argc > 2)
167 targetshouldbedirectory = 1;
168
169 rem = -1;
170 /* Command to be executed on remote system using "rsh". */
171 (void)snprintf(cmd, sizeof(cmd), "rcp%s%s%s",
172 iamrecursive ? " -r" : "", pflag ? " -p" : "",
173 targetshouldbedirectory ? " -d" : "");
174
175 (void)signal(SIGPIPE, lostconn);
176
177 if ((targ = colon(argv[argc - 1])) != NULL)/* Dest is remote host. */
178 toremote(targ, argc, argv);
179 else {
180 tolocal(argc, argv); /* Dest is local host. */
181 if (targetshouldbedirectory)
182 verifydir(argv[argc - 1]);
183 }
184 exit(errs);
185 /* NOTREACHED */
186}
187
188void
189toremote(char *targ, int argc, char *argv[])
190{
191 int i;
192 size_t len;
193 char *bp, *host, *src, *suser, *thost, *tuser;
194
195 *targ++ = 0;
196 if (*targ == 0)
197 targ = dot;
198
199 if ((thost = strchr(argv[argc - 1], '@')) != NULL) {
200 /* user@host */
201 *thost++ = 0;
202 tuser = argv[argc - 1];
203 if (*tuser == '\0')
204 tuser = NULL;
205 else if (!okname(tuser))
206 exit(1);
207 } else {
208 thost = argv[argc - 1];
209 tuser = NULL;
210 }
211 thost = unbracket(thost);
212
213 for (i = 0; i < argc - 1; i++) {
214 src = colon(argv[i]);
215 if (src) { /* remote to remote */
216 *src++ = 0;
217 if (*src == 0)
218 src = dot;
219 host = strchr(argv[i], '@');
220 len = strlen(_PATH_RSH) + strlen(argv[i]) +
221 strlen(src) + (tuser ? strlen(tuser) : 0) +
222 strlen(thost) + strlen(targ) + CMDNEEDS + 20;
223 if (!(bp = malloc(len)))
224 err(1, NULL);
225 if (host) {
226 *host++ = 0;
227 host = unbracket(host);
228 suser = argv[i];
229 if (*suser == '\0')
230 suser = pwname;
231 else if (!okname(suser)) {
232 (void)free(bp);
233 continue;
234 }
235 (void)snprintf(bp, len,
236 "%s %s -l %s -n %s %s '%s%s%s:%s'",
237 _PATH_RSH, host, suser, cmd, src,
238 tuser ? tuser : "", tuser ? "@" : "",
239 thost, targ);
240 } else {
241 host = unbracket(argv[i]);
242 (void)snprintf(bp, len,
243 "exec %s %s -n %s %s '%s%s%s:%s'",
244 _PATH_RSH, argv[i], cmd, src,
245 tuser ? tuser : "", tuser ? "@" : "",
246 thost, targ);
247 }
248 (void)susystem(bp);
249 (void)free(bp);
250 } else { /* local to remote */
251 if (rem == -1) {
252 len = strlen(targ) + CMDNEEDS + 20;
253 if (!(bp = malloc(len)))
254 err(1, NULL);
255 (void)snprintf(bp, len, "%s -t %s", cmd, targ);
256 host = thost;
257 rem = rcmd_af(&host, port, pwname,
258 tuser ? tuser : pwname,
259 bp, NULL, family);
260 if (rem < 0)
261 exit(1);
262 if (response() < 0)
263 exit(1);
264 (void)free(bp);
265 }
266 source(1, argv+i);
267 }
268 }
269}
270
271void
272tolocal(int argc, char *argv[])
273{
274 int i;
275 size_t len;
276 char *bp, *host, *src, *suser;
277
278 for (i = 0; i < argc - 1; i++) {
279 if (!(src = colon(argv[i]))) { /* Local to local. */
280 len = strlen(_PATH_CP) + strlen(argv[i]) +
281 strlen(argv[argc - 1]) + 20;
282 if (!(bp = malloc(len)))
283 err(1, NULL);
284 (void)snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
285 iamrecursive ? " -r" : "", pflag ? " -p" : "",
286 argv[i], argv[argc - 1]);
287 if (susystem(bp))
288 ++errs;
289 (void)free(bp);
290 continue;
291 }
292 *src++ = 0;
293 if (*src == 0)
294 src = dot;
295 if ((host = strchr(argv[i], '@')) == NULL) {
296 host = argv[i];
297 suser = pwname;
298 } else {
299 *host++ = 0;
300 suser = argv[i];
301 if (*suser == '\0')
302 suser = pwname;
303 else if (!okname(suser))
304 continue;
305 }
306 host = unbracket(host);
307 len = strlen(src) + CMDNEEDS + 20;
308 if ((bp = malloc(len)) == NULL)
309 err(1, NULL);
310 (void)snprintf(bp, len, "%s -f %s", cmd, src);
311 rem =
312 rcmd_af(&host, port, pwname, suser, bp, NULL, family);
313 (void)free(bp);
314 if (rem < 0) {
315 ++errs;
316 continue;
317 }
318 sink(1, argv + argc - 1);
319 (void)close(rem);
320 rem = -1;
321 }
322}
323
324void
325source(int argc, char *argv[])
326{
327 struct stat stb;
328 static BUF buffer;
329 BUF *bp;
330 off_t i;
331 off_t amt;
332 int fd, haderr, indx, result;
333 char *last, *name, buf[BUFSIZ];
334
335 for (indx = 0; indx < argc; ++indx) {
336 name = argv[indx];
337 if ((fd = open(name, O_RDONLY, 0)) < 0)
338 goto syserr;
339 if (fstat(fd, &stb)) {
340syserr: run_err("%s: %s", name, strerror(errno));
341 goto next;
342 }
343 switch (stb.st_mode & S_IFMT) {
344 case S_IFREG:
345 break;
346 case S_IFDIR:
347 if (iamrecursive) {
348 rsource(name, &stb);
349 goto next;
350 }
351 /* FALLTHROUGH */
352 default:
353 run_err("%s: not a regular file", name);
354 goto next;
355 }
356 if ((last = strrchr(name, '/')) == NULL)
357 last = name;
358 else
359 ++last;
360 if (pflag) {
361 /*
362 * Make it compatible with possible future
363 * versions expecting microseconds.
364 */
365 (void)snprintf(buf, sizeof(buf), "T%lld %ld %lld %ld\n",
366 (long long)stb.st_mtimespec.tv_sec,
367 (long)stb.st_mtimespec.tv_nsec / 1000,
368 (long long)stb.st_atimespec.tv_sec,
369 (long)stb.st_atimespec.tv_nsec / 1000);
370 (void)write(rem, buf, strlen(buf));
371 if (response() < 0)
372 goto next;
373 }
374#define RCPMODEMASK (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
375 (void)snprintf(buf, sizeof(buf), "C%04o %lld %s\n",
376 stb.st_mode & RCPMODEMASK, (long long)stb.st_size, last);
377 (void)write(rem, buf, strlen(buf));
378 if (response() < 0)
379 goto next;
380 if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) {
381next: (void)close(fd);
382 continue;
383 }
384
385 /* Keep writing after an error so that we stay sync'd up. */
386 haderr = 0;
387 for (i = 0; i < stb.st_size; i += bp->cnt) {
388 amt = bp->cnt;
389 if (i + amt > stb.st_size)
390 amt = stb.st_size - i;
391 if (!haderr) {
392 result = read(fd, bp->buf, (size_t)amt);
393 if (result != amt)
394 haderr = result >= 0 ? EIO : errno;
395 }
396 if (haderr)
397 (void)write(rem, bp->buf, (size_t)amt);
398 else {
399 result = write(rem, bp->buf, (size_t)amt);
400 if (result != amt)
401 haderr = result >= 0 ? EIO : errno;
402 }
403 }
404 if (close(fd) && !haderr)
405 haderr = errno;
406 if (!haderr)
407 (void)write(rem, "", 1);
408 else
409 run_err("%s: %s", name, strerror(haderr));
410 (void)response();
411 }
412}
413
414void
415rsource(char *name, struct stat *statp)
416{
417 DIR *dirp;
418 struct dirent *dp;
419 char *last, *vect[1], path[MAXPATHLEN];
420
421 if (!(dirp = opendir(name))) {
422 run_err("%s: %s", name, strerror(errno));
423 return;
424 }
425 last = strrchr(name, '/');
426 if (last == 0)
427 last = name;
428 else
429 last++;
430 if (pflag) {
431 (void)snprintf(path, sizeof(path), "T%lld %ld %lld %ld\n",
432 (long long)statp->st_mtimespec.tv_sec,
433 (long)statp->st_mtimespec.tv_nsec / 1000,
434 (long long)statp->st_atimespec.tv_sec,
435 (long)statp->st_atimespec.tv_nsec / 1000);
436 (void)write(rem, path, strlen(path));
437 if (response() < 0) {
438 (void)closedir(dirp);
439 return;
440 }
441 }
442 (void)snprintf(path, sizeof(path),
443 "D%04o %d %s\n", statp->st_mode & RCPMODEMASK, 0, last);
444 (void)write(rem, path, strlen(path));
445 if (response() < 0) {
446 (void)closedir(dirp);
447 return;
448 }
449 while ((dp = readdir(dirp)) != NULL) {
450 if (dp->d_ino == 0)
451 continue;
452 if (!strcmp(dp->d_name, dot) || !strcmp(dp->d_name, ".."))
453 continue;
454 if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) {
455 run_err("%s/%s: name too long", name, dp->d_name);
456 continue;
457 }
458 (void)snprintf(path, sizeof(path), "%s/%s", name, dp->d_name);
459 vect[0] = path;
460 source(1, vect);
461 }
462 (void)closedir(dirp);
463 (void)write(rem, "E\n", 2);
464 (void)response();
465}
466
467void
468sink(int argc, char *argv[])
469{
470 static BUF buffer;
471 struct stat stb;
472 struct timeval tv[2];
473 enum { YES, NO, DISPLAYED } wrerr;
474 BUF *bp;
475 ssize_t j;
476 off_t i;
477 off_t amt;
478 off_t count;
479 int exists, first, ofd;
480 mode_t mask;
481 mode_t mode;
482 mode_t omode;
483 int setimes, targisdir;
484 int wrerrno = 0; /* pacify gcc */
485 char ch, *cp, *np, *targ, *vect[1], buf[BUFSIZ];
486 const char *why;
487 off_t size;
488 char *namebuf = NULL;
489 size_t cursize = 0;
490
491#define atime tv[0]
492#define mtime tv[1]
493#define SCREWUP(str) { why = str; goto screwup; }
494
495 setimes = targisdir = 0;
496 mask = umask(0);
497 if (!pflag)
498 (void)umask(mask);
499 if (argc != 1) {
500 run_err("ambiguous target");
501 exit(1);
502 }
503 targ = *argv;
504 if (targetshouldbedirectory)
505 verifydir(targ);
506 (void)write(rem, "", 1);
507 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
508 targisdir = 1;
509 for (first = 1;; first = 0) {
510 cp = buf;
511 if (read(rem, cp, 1) <= 0)
512 goto out;
513 if (*cp++ == '\n')
514 SCREWUP("unexpected <newline>");
515 do {
516 if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
517 SCREWUP("lost connection");
518 *cp++ = ch;
519 } while (cp < &buf[BUFSIZ - 1] && ch != '\n');
520 *cp = 0;
521
522 if (buf[0] == '\01' || buf[0] == '\02') {
523 if (iamremote == 0)
524 (void)write(STDERR_FILENO,
525 buf + 1, strlen(buf + 1));
526 if (buf[0] == '\02')
527 exit(1);
528 ++errs;
529 continue;
530 }
531 if (buf[0] == 'E') {
532 (void)write(rem, "", 1);
533 goto out;
534 }
535
536 if (ch == '\n')
537 *--cp = 0;
538
539#define getnum(t) (t) = 0; while (isdigit((unsigned char)*cp)) (t) = (t) * 10 + (*cp++ - '0');
540 cp = buf;
541 if (*cp == 'T') {
542 setimes++;
543 cp++;
544 getnum(mtime.tv_sec);
545 if (*cp++ != ' ')
546 SCREWUP("mtime.sec not delimited");
547 getnum(mtime.tv_usec);
548 if (*cp++ != ' ')
549 SCREWUP("mtime.usec not delimited");
550 getnum(atime.tv_sec);
551 if (*cp++ != ' ')
552 SCREWUP("atime.sec not delimited");
553 getnum(atime.tv_usec);
554 if (*cp++ != '\0')
555 SCREWUP("atime.usec not delimited");
556 (void)write(rem, "", 1);
557 continue;
558 }
559 if (*cp != 'C' && *cp != 'D') {
560 /*
561 * Check for the case "rcp remote:foo\* local:bar".
562 * In this case, the line "No match." can be returned
563 * by the shell before the rcp command on the remote is
564 * executed so the ^Aerror_message convention isn't
565 * followed.
566 */
567 if (first) {
568 run_err("%s", cp);
569 exit(1);
570 }
571 SCREWUP("expected control record");
572 }
573 mode = 0;
574 for (++cp; cp < buf + 5; cp++) {
575 if (*cp < '0' || *cp > '7')
576 SCREWUP("bad mode");
577 mode = (mode << 3) | (*cp - '0');
578 }
579 if (*cp++ != ' ')
580 SCREWUP("mode not delimited");
581
582 for (size = 0; isdigit((unsigned char)*cp);)
583 size = size * 10 + (*cp++ - '0');
584 if (*cp++ != ' ')
585 SCREWUP("size not delimited");
586 if (targisdir) {
587 char *newnamebuf;
588 size_t need;
589
590 need = strlen(targ) + strlen(cp) + 2;
591 if (need > cursize) {
592 need += 256;
593 newnamebuf = realloc(namebuf, need);
594 if (newnamebuf != NULL) {
595 namebuf = newnamebuf;
596 cursize = need;
597 } else {
598 run_err("%s", strerror(errno));
599 exit(1);
600 }
601 }
602 (void)snprintf(namebuf, cursize, "%s%s%s", targ,
603 *targ ? "/" : "", cp);
604 np = namebuf;
605 } else
606 np = targ;
607 exists = stat(np, &stb) == 0;
608 if (buf[0] == 'D') {
609 int mod_flag = pflag;
610 if (exists) {
611 if (!S_ISDIR(stb.st_mode)) {
612 errno = ENOTDIR;
613 goto bad;
614 }
615 if (pflag)
616 (void)chmod(np, mode);
617 } else {
618 /* Handle copying from a read-only directory */
619 mod_flag = 1;
620 if (mkdir(np, mode | S_IRWXU) < 0)
621 goto bad;
622 }
623 vect[0] = np;
624 sink(1, vect);
625 if (setimes) {
626 setimes = 0;
627 if (utimes(np, tv) < 0)
628 run_err("%s: set times: %s",
629 np, strerror(errno));
630 }
631 if (mod_flag)
632 (void)chmod(np, mode);
633 continue;
634 }
635 omode = mode;
636 mode |= S_IWRITE;
637 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
638bad: run_err("%s: %s", np, strerror(errno));
639 continue;
640 }
641 (void)write(rem, "", 1);
642 if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) {
643 (void)close(ofd);
644 continue;
645 }
646 cp = bp->buf;
647 wrerr = NO;
648 count = 0;
649 for (i = 0; i < size; i += BUFSIZ) {
650 amt = BUFSIZ;
651 if (i + amt > size)
652 amt = size - i;
653 count += amt;
654 do {
655 j = read(rem, cp, (size_t)amt);
656 if (j == -1) {
657 run_err("%s", j ? strerror(errno) :
658 "dropped connection");
659 exit(1);
660 }
661 amt -= j;
662 cp += j;
663 } while (amt > 0);
664 if (count == bp->cnt) {
665 /* Keep reading so we stay sync'd up. */
666 if (wrerr == NO) {
667 j = write(ofd, bp->buf, (size_t)count);
668 if (j != count) {
669 wrerr = YES;
670 wrerrno = j >= 0 ? EIO : errno;
671 }
672 }
673 count = 0;
674 cp = bp->buf;
675 }
676 }
677 if (count != 0 && wrerr == NO &&
678 (j = write(ofd, bp->buf, (size_t)count)) != count) {
679 wrerr = YES;
680 wrerrno = j >= 0 ? EIO : errno;
681 }
682 if (ftruncate(ofd, size)) {
683 run_err("%s: truncate: %s", np, strerror(errno));
684 wrerr = DISPLAYED;
685 }
686 if (pflag) {
687 if (exists || omode != mode)
688 if (fchmod(ofd, omode))
689 run_err("%s: set mode: %s",
690 np, strerror(errno));
691 } else {
692 if (!exists && omode != mode)
693 if (fchmod(ofd, omode & ~mask))
694 run_err("%s: set mode: %s",
695 np, strerror(errno));
696 }
697#ifndef __SVR4
698 if (setimes && wrerr == NO) {
699 setimes = 0;
700 if (futimes(ofd, tv) < 0) {
701 run_err("%s: set times: %s",
702 np, strerror(errno));
703 wrerr = DISPLAYED;
704 }
705 }
706#endif
707 (void)close(ofd);
708#ifdef __SVR4
709 if (setimes && wrerr == NO) {
710 setimes = 0;
711 if (utimes(np, tv) < 0) {
712 run_err("%s: set times: %s",
713 np, strerror(errno));
714 wrerr = DISPLAYED;
715 }
716 }
717#endif
718 (void)response();
719 switch(wrerr) {
720 case YES:
721 run_err("%s: write: %s", np, strerror(wrerrno));
722 break;
723 case NO:
724 (void)write(rem, "", 1);
725 break;
726 case DISPLAYED:
727 break;
728 }
729 }
730
731out:
732 if (namebuf) {
733 free(namebuf);
734 }
735 return;
736
737screwup:
738 run_err("protocol error: %s", why);
739 exit(1);
740 /* NOTREACHED */
741}
742
743
744int
745response(void)
746{
747 char ch, *cp, resp, rbuf[BUFSIZ];
748
749 if (read(rem, &resp, sizeof(resp)) != sizeof(resp))
750 lostconn(0);
751
752 cp = rbuf;
753 switch(resp) {
754 case 0: /* ok */
755 return (0);
756 default:
757 *cp++ = resp;
758 /* FALLTHROUGH */
759 case 1: /* error, followed by error msg */
760 case 2: /* fatal error, "" */
761 do {
762 if (read(rem, &ch, sizeof(ch)) != sizeof(ch))
763 lostconn(0);
764 *cp++ = ch;
765 } while (cp < &rbuf[BUFSIZ] && ch != '\n');
766
767 if (!iamremote)
768 (void)write(STDERR_FILENO, rbuf, (size_t)(cp - rbuf));
769 ++errs;
770 if (resp == 1)
771 return (-1);
772 exit(1);
773 }
774 /* NOTREACHED */
775}
776
777void
778usage(void)
779{
780 (void)fprintf(stderr,
781 "usage: rcp [-46p] f1 f2; or: rcp [-46pr] f1 ... fn directory\n");
782 exit(1);
783 /* NOTREACHED */
784}
785
786#include <stdarg.h>
787
788
789void
790run_err(const char *fmt, ...)
791{
792 static FILE *fp;
793 va_list ap;
794
795 ++errs;
796 if (fp == NULL && !(fp = fdopen(rem, "w")))
797 return;
798
799 va_start(ap, fmt);
800
801 (void)fprintf(fp, "%c", 0x01);
802 (void)fprintf(fp, "rcp: ");
803 (void)vfprintf(fp, fmt, ap);
804 (void)fprintf(fp, "\n");
805 (void)fflush(fp);
806 va_end(ap);
807
808 if (!iamremote) {
809 va_start(ap, fmt);
810 vwarnx(fmt, ap);
811 va_end(ap);
812 }
813}
814