2 * Copyright (c) 1983, 1990, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #define RSH_PROGRAM "rsh"
41 int errs, remin, remout;
42 int pflag, iamremote, iamrecursive, targetshouldbedirectory;
43 int doencrypt, noencrypt;
44 int usebroken, usekrb4, usekrb5, forwardtkt;
49 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
52 void rsource (char *, struct stat *);
53 void sink (int, char *[]);
54 void source (int, char *[]);
55 void tolocal (int, char *[]);
56 void toremote (char *, int, char *[]);
58 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
60 static int fflag, tflag;
62 static int version_flag, help_flag;
64 struct getargs args[] = {
65 { NULL, '4', arg_flag, &usekrb4, "use Kerberos 4 authentication" },
66 { NULL, '5', arg_flag, &usekrb5, "use Kerberos 5 authentication" },
67 { NULL, 'F', arg_flag, &forwardtkt, "forward credentials" },
68 { NULL, 'K', arg_flag, &usebroken, "use BSD authentication" },
69 { NULL, 'P', arg_string, &port, "non-default port", "port" },
70 { NULL, 'p', arg_flag, &pflag, "preserve file permissions" },
71 { NULL, 'r', arg_flag, &iamrecursive, "recursive mode" },
72 { NULL, 'x', arg_flag, &doencrypt, "use encryption" },
73 { NULL, 'z', arg_flag, &noencrypt, "don't encrypt" },
74 { NULL, 'd', arg_flag, &targetshouldbedirectory },
75 { NULL, 'e', arg_flag, &eflag, "passed to rsh" },
76 { NULL, 'f', arg_flag, &fflag },
77 { NULL, 't', arg_flag, &tflag },
78 { "version", 0, arg_flag, &version_flag },
79 { "help", 0, arg_flag, &help_flag }
86 sizeof(args) / sizeof(args[0]),
88 "file1 file2|file... directory");
93 main(int argc, char **argv)
99 if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
105 print_version (NULL);
109 iamremote = (fflag || tflag);
114 if ((pwd = getpwuid(userid = getuid())) == NULL)
115 errx(1, "unknown user %d", (int)userid);
117 remin = STDIN_FILENO; /* XXX */
118 remout = STDOUT_FILENO;
120 if (fflag) { /* Follow "protocol", send data. */
122 if (setuid(userid) < 0)
123 errx(1, "setuid failed");
128 if (tflag) { /* Receive data. */
129 if (setuid(userid) < 0)
130 errx(1, "setuid failed");
138 targetshouldbedirectory = 1;
141 /* Command to be executed on remote system using "rsh". */
142 snprintf(cmd, sizeof(cmd),
143 "rcp%s%s%s", iamrecursive ? " -r" : "",
144 pflag ? " -p" : "", targetshouldbedirectory ? " -d" : "");
146 signal(SIGPIPE, lostconn);
148 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
149 toremote(targ, argc, argv);
151 tolocal(argc, argv); /* Dest is local host. */
152 if (targetshouldbedirectory)
153 verifydir(argv[argc - 1]);
159 toremote(char *targ, int argc, char **argv)
162 char *bp, *host, *src, *suser, *thost, *tuser;
168 if ((thost = strchr(argv[argc - 1], '@'))) {
171 tuser = argv[argc - 1];
174 else if (!okname(tuser))
177 thost = argv[argc - 1];
181 for (i = 0; i < argc - 1; i++) {
182 src = colon(argv[i]);
183 if (src) { /* remote to remote */
188 host = strchr(argv[i], '@');
193 suser = pwd->pw_name;
194 else if (!okname(suser))
197 "%s%s %s -l %s -n %s %s '%s%s%s:%s'",
198 _PATH_RSH, eflag ? " -e" : "",
199 host, suser, cmd, src,
200 tuser ? tuser : "", tuser ? "@" : "",
204 "exec %s%s %s -n %s %s '%s%s%s:%s'",
205 _PATH_RSH, eflag ? " -e" : "",
207 tuser ? tuser : "", tuser ? "@" : "",
212 susystem(bp, userid);
214 } else { /* local to remote */
216 if (asprintf(&bp, "%s -t %s", cmd, targ) == -1)
220 if (do_cmd(host, tuser, bp, &remin, &remout) < 0)
226 if (setuid(userid) < 0)
227 errx(1, "setuid failed");
235 tolocal(int argc, char **argv)
238 char *bp, *host, *src, *suser;
240 for (i = 0; i < argc - 1; i++) {
243 if (!(src = colon(argv[i]))) { /* Local to local. */
244 ret = asprintf(&bp, "exec %s%s%s %s %s", _PATH_CP,
245 iamrecursive ? " -PR" : "", pflag ? " -p" : "",
246 argv[i], argv[argc - 1]);
249 if (susystem(bp, userid))
257 if ((host = strchr(argv[i], '@')) == NULL) {
259 suser = pwd->pw_name;
264 suser = pwd->pw_name;
265 else if (!okname(suser))
268 ret = asprintf(&bp, "%s -f %s", cmd, src);
271 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
277 sink(1, argv + argc - 1);
286 source(int argc, char **argv)
292 int amt, fd, haderr, indx, result;
293 char *last, *name, buf[BUFSIZ];
295 for (indx = 0; indx < argc; ++indx) {
297 if ((fd = open(name, O_RDONLY, 0)) < 0)
299 if (fstat(fd, &stb)) {
300 syserr: run_err("%s: %s", name, strerror(errno));
303 switch (stb.st_mode & S_IFMT) {
313 run_err("%s: not a regular file", name);
316 if ((last = strrchr(name, '/')) == NULL)
322 * Make it compatible with possible future
323 * versions expecting microseconds.
325 snprintf(buf, sizeof(buf), "T%ld 0 %ld 0\n",
328 write(remout, buf, strlen(buf));
333 #define MODEMASK (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)
334 snprintf(buf, sizeof(buf), "C%04o %lu %s\n",
335 stb.st_mode & MODEMASK,
336 (unsigned long)stb.st_size,
338 write(remout, buf, strlen(buf));
341 if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) {
346 /* Keep writing after an error so that we stay sync'd up. */
347 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
349 if (i + amt > stb.st_size)
350 amt = stb.st_size - i;
352 result = read(fd, bp->buf, amt);
354 haderr = result >= 0 ? EIO : errno;
357 write(remout, bp->buf, amt);
359 result = write(remout, bp->buf, amt);
361 haderr = result >= 0 ? EIO : errno;
364 if (close(fd) && !haderr)
367 write(remout, "", 1);
369 run_err("%s: %s", name, strerror(haderr));
375 rsource(char *name, struct stat *statp)
379 char *last, *vect[1], path[MAXPATHLEN];
381 if (!(dirp = opendir(name))) {
382 run_err("%s: %s", name, strerror(errno));
385 last = strrchr(name, '/');
391 snprintf(path, sizeof(path), "T%ld 0 %ld 0\n",
392 (long)statp->st_mtime,
393 (long)statp->st_atime);
394 write(remout, path, strlen(path));
395 if (response() < 0) {
400 snprintf(path, sizeof(path),
401 "D%04o %d %s\n", statp->st_mode & MODEMASK, 0, last);
402 write(remout, path, strlen(path));
403 if (response() < 0) {
407 while ((dp = readdir(dirp))) {
410 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
412 if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) {
413 run_err("%s/%s: name too long", name, dp->d_name);
416 snprintf(path, sizeof(path), "%s/%s", name, dp->d_name);
421 write(remout, "E\n", 2);
426 sink(int argc, char **argv)
430 struct timeval tv[2];
431 enum { YES, NO, DISPLAYED } wrerr;
434 int amt, count, exists, first, mask, mode, ofd, omode;
435 int setimes, targisdir, wrerrno = 0;
436 char ch, *cp, *np, *targ, *why, *vect[1], buf[BUFSIZ];
440 #define SCREWUP(str) { why = str; goto screwup; }
442 setimes = targisdir = 0;
447 run_err("ambiguous target");
451 if (targetshouldbedirectory)
453 write(remout, "", 1);
454 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
456 for (first = 1;; first = 0) {
458 if (read(remin, cp, 1) <= 0)
461 SCREWUP("unexpected <newline>");
463 if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
464 SCREWUP("lost connection");
466 } while (cp < &buf[BUFSIZ - 1] && ch != '\n');
469 if (buf[0] == '\01' || buf[0] == '\02') {
472 buf + 1, strlen(buf + 1));
479 write(remout, "", 1);
490 mtime.tv_sec = strtol(cp, &cp, 10);
491 if (!cp || *cp++ != ' ')
492 SCREWUP("mtime.sec not delimited");
493 mtime.tv_usec = strtol(cp, &cp, 10);
494 if (!cp || *cp++ != ' ')
495 SCREWUP("mtime.usec not delimited");
496 atime.tv_sec = strtol(cp, &cp, 10);
497 if (!cp || *cp++ != ' ')
498 SCREWUP("atime.sec not delimited");
499 atime.tv_usec = strtol(cp, &cp, 10);
500 if (!cp || *cp++ != '\0')
501 SCREWUP("atime.usec not delimited");
502 write(remout, "", 1);
505 if (*cp != 'C' && *cp != 'D') {
507 * Check for the case "rcp remote:foo\* local:bar".
508 * In this case, the line "No match." can be returned
509 * by the shell before the rcp command on the remote is
510 * executed so the ^Aerror_message convention isn't
517 SCREWUP("expected control record");
520 for (++cp; cp < buf + 5; cp++) {
521 if (*cp < '0' || *cp > '7')
523 mode = (mode << 3) | (*cp - '0');
526 SCREWUP("mode not delimited");
528 for (size = 0; isdigit((unsigned char)*cp);)
529 size = size * 10 + (*cp++ - '0');
531 SCREWUP("size not delimited");
533 static char *namebuf;
537 need = strlen(targ) + strlen(cp) + 250;
538 if (need > cursize) {
539 if (!(namebuf = malloc(need)))
540 run_err("%s", strerror(errno));
542 snprintf(namebuf, need, "%s%s%s", targ,
543 *targ ? "/" : "", cp);
547 exists = stat(np, &stb) == 0;
549 int mod_flag = pflag;
551 if (!S_ISDIR(stb.st_mode)) {
558 /* Handle copying from a read-only directory */
560 if (mkdir(np, mode | S_IRWXU) < 0)
567 if (utimes(np, tv) < 0)
568 run_err("%s: set times: %s",
569 np, strerror(errno));
577 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
578 bad: run_err("%s: %s", np, strerror(errno));
581 write(remout, "", 1);
582 if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) {
588 for (count = i = 0; i < size; i += BUFSIZ) {
593 if((j = net_read(remin, cp, amt)) != amt) {
594 run_err("%s", j ? strerror(errno) :
595 "dropped connection");
600 if (count == bp->cnt) {
601 /* Keep reading so we stay sync'd up. */
603 j = write(ofd, bp->buf, count);
606 wrerrno = j >= 0 ? EIO : errno;
613 if (count != 0 && wrerr == NO &&
614 (j = write(ofd, bp->buf, count)) != count) {
616 wrerrno = j >= 0 ? EIO : errno;
618 if (ftruncate(ofd, size)) {
619 run_err("%s: truncate: %s", np, strerror(errno));
623 if (exists || omode != mode)
624 if (fchmod(ofd, omode))
625 run_err("%s: set mode: %s",
626 np, strerror(errno));
628 if (!exists && omode != mode)
629 if (fchmod(ofd, omode & ~mask))
630 run_err("%s: set mode: %s",
631 np, strerror(errno));
635 if (setimes && wrerr == NO) {
637 if (utimes(np, tv) < 0) {
638 run_err("%s: set times: %s",
639 np, strerror(errno));
645 run_err("%s: %s", np, strerror(wrerrno));
648 write(remout, "", 1);
655 run_err("protocol error: %s", why);
662 char ch, *cp, resp, rbuf[BUFSIZ];
664 if (read(remin, &resp, sizeof(resp)) != sizeof(resp))
674 case 1: /* error, followed by error msg */
675 case 2: /* fatal error, "" */
677 if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
680 } while (cp < &rbuf[BUFSIZ] && ch != '\n');
683 write(STDERR_FILENO, rbuf, cp - rbuf);
695 run_err(const char *fmt, ...)
701 if (fp == NULL && !(fp = fdopen(remout, "w")))
704 fprintf(fp, "%c", 0x01);
705 fprintf(fp, "rcp: ");
706 vfprintf(fp, fmt, ap);
719 * This function executes the given command as the specified user on the
720 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
721 * assigns the input and output file descriptors on success.
723 * If it cannot create necessary pipes it exits with error message.
727 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
729 int pin[2], pout[2], reserved[2];
732 * Reserve two descriptors so that the real pipes won't get
733 * descriptors 0 and 1 because that will screw up dup2 below.
737 /* Create a socket pair for communicating with rsh. */
742 if (pipe(pout) < 0) {
747 /* Free the reserved descriptors. */
751 /* For a child to execute the command on the remote host using rsh. */
765 args[i++] = RSH_PROGRAM;
784 if (remuser != NULL) {
792 execvp(RSH_PROGRAM, args);
796 /* Parent. Close the other side, and return the local side. */