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;
48 char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
51 void rsource (char *, struct stat *);
52 void sink (int, char *[]);
53 void source (int, char *[]);
54 void tolocal (int, char *[]);
55 void toremote (char *, int, char *[]);
57 int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout);
59 static int fflag, tflag;
61 static int version_flag, help_flag;
63 struct getargs args[] = {
64 { NULL, '4', arg_flag, &usekrb4, "use Kerberos 4 authentication" },
65 { NULL, '5', arg_flag, &usekrb5, "use Kerberos 5 authentication" },
66 { NULL, 'F', arg_flag, &forwardtkt, "forward credentials" },
67 { NULL, 'K', arg_flag, &usebroken, "use BSD authentication" },
68 { NULL, 'P', arg_string, &port, "non-default port", "port" },
69 { NULL, 'p', arg_flag, &pflag, "preserve file permissions" },
70 { NULL, 'r', arg_flag, &iamrecursive, "recursive mode" },
71 { NULL, 'x', arg_flag, &doencrypt, "use encryption" },
72 { NULL, 'z', arg_flag, &noencrypt, "don't encrypt" },
73 { NULL, 'd', arg_flag, &targetshouldbedirectory },
74 { NULL, 'f', arg_flag, &fflag },
75 { NULL, 't', arg_flag, &tflag },
76 { "version", 0, arg_flag, &version_flag },
77 { "help", 0, arg_flag, &help_flag }
84 sizeof(args) / sizeof(args[0]),
86 "file1 file2|file... directory");
91 main(int argc, char **argv)
97 if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
103 print_version (NULL);
107 iamremote = (fflag || tflag);
112 if ((pwd = getpwuid(userid = getuid())) == NULL)
113 errx(1, "unknown user %d", (int)userid);
115 remin = STDIN_FILENO; /* XXX */
116 remout = STDOUT_FILENO;
118 if (fflag) { /* Follow "protocol", send data. */
125 if (tflag) { /* Receive data. */
134 targetshouldbedirectory = 1;
137 /* Command to be executed on remote system using "rsh". */
138 snprintf(cmd, sizeof(cmd),
139 "rcp%s%s%s", iamrecursive ? " -r" : "",
140 pflag ? " -p" : "", targetshouldbedirectory ? " -d" : "");
142 signal(SIGPIPE, lostconn);
144 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
145 toremote(targ, argc, argv);
147 tolocal(argc, argv); /* Dest is local host. */
148 if (targetshouldbedirectory)
149 verifydir(argv[argc - 1]);
155 toremote(char *targ, int argc, char **argv)
158 char *bp, *host, *src, *suser, *thost, *tuser;
164 if ((thost = strchr(argv[argc - 1], '@'))) {
167 tuser = argv[argc - 1];
170 else if (!okname(tuser))
173 thost = argv[argc - 1];
177 for (i = 0; i < argc - 1; i++) {
178 src = colon(argv[i]);
179 if (src) { /* remote to remote */
183 host = strchr(argv[i], '@');
188 suser = pwd->pw_name;
189 else if (!okname(suser))
192 "%s %s -l %s -n %s %s '%s%s%s:%s'",
193 _PATH_RSH, host, suser, cmd, src,
194 tuser ? tuser : "", tuser ? "@" : "",
198 "exec %s %s -n %s %s '%s%s%s:%s'",
199 _PATH_RSH, argv[i], cmd, src,
200 tuser ? tuser : "", tuser ? "@" : "",
205 susystem(bp, userid);
207 } else { /* local to remote */
209 asprintf(&bp, "%s -t %s", cmd, targ);
214 if (do_cmd(host, tuser, bp, &remin, &remout) < 0)
228 tolocal(int argc, char **argv)
231 char *bp, *host, *src, *suser;
233 for (i = 0; i < argc - 1; i++) {
234 if (!(src = colon(argv[i]))) { /* Local to local. */
235 asprintf(&bp, "exec %s%s%s %s %s", _PATH_CP,
236 iamrecursive ? " -PR" : "", pflag ? " -p" : "",
237 argv[i], argv[argc - 1]);
240 if (susystem(bp, userid))
248 if ((host = strchr(argv[i], '@')) == NULL) {
250 suser = pwd->pw_name;
255 suser = pwd->pw_name;
256 else if (!okname(suser))
259 asprintf(&bp, "%s -f %s", cmd, src);
262 if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
268 sink(1, argv + argc - 1);
276 source(int argc, char **argv)
282 int amt, fd, haderr, indx, result;
283 char *last, *name, buf[BUFSIZ];
285 for (indx = 0; indx < argc; ++indx) {
287 if ((fd = open(name, O_RDONLY, 0)) < 0)
289 if (fstat(fd, &stb)) {
290 syserr: run_err("%s: %s", name, strerror(errno));
293 switch (stb.st_mode & S_IFMT) {
303 run_err("%s: not a regular file", name);
306 if ((last = strrchr(name, '/')) == NULL)
312 * Make it compatible with possible future
313 * versions expecting microseconds.
315 snprintf(buf, sizeof(buf), "T%ld 0 %ld 0\n",
318 write(remout, buf, strlen(buf));
322 #define MODEMASK (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)
323 snprintf(buf, sizeof(buf), "C%04o %lu %s\n",
324 stb.st_mode & MODEMASK,
325 (unsigned long)stb.st_size,
327 write(remout, buf, strlen(buf));
330 if ((bp = allocbuf(&buffer, fd, BUFSIZ)) == NULL) {
335 /* Keep writing after an error so that we stay sync'd up. */
336 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
338 if (i + amt > stb.st_size)
339 amt = stb.st_size - i;
341 result = read(fd, bp->buf, amt);
343 haderr = result >= 0 ? EIO : errno;
346 write(remout, bp->buf, amt);
348 result = write(remout, bp->buf, amt);
350 haderr = result >= 0 ? EIO : errno;
353 if (close(fd) && !haderr)
356 write(remout, "", 1);
358 run_err("%s: %s", name, strerror(haderr));
364 rsource(char *name, struct stat *statp)
368 char *last, *vect[1], path[MAXPATHLEN];
370 if (!(dirp = opendir(name))) {
371 run_err("%s: %s", name, strerror(errno));
374 last = strrchr(name, '/');
380 snprintf(path, sizeof(path), "T%ld 0 %ld 0\n",
381 (long)statp->st_mtime,
382 (long)statp->st_atime);
383 write(remout, path, strlen(path));
384 if (response() < 0) {
389 snprintf(path, sizeof(path),
390 "D%04o %d %s\n", statp->st_mode & MODEMASK, 0, last);
391 write(remout, path, strlen(path));
392 if (response() < 0) {
396 while ((dp = readdir(dirp))) {
399 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
401 if (strlen(name) + 1 + strlen(dp->d_name) >= MAXPATHLEN - 1) {
402 run_err("%s/%s: name too long", name, dp->d_name);
405 snprintf(path, sizeof(path), "%s/%s", name, dp->d_name);
410 write(remout, "E\n", 2);
415 sink(int argc, char **argv)
419 struct timeval tv[2];
420 enum { YES, NO, DISPLAYED } wrerr;
423 int amt, count, exists, first, mask, mode, ofd, omode;
424 int setimes, targisdir, wrerrno = 0;
425 char ch, *cp, *np, *targ, *why, *vect[1], buf[BUFSIZ];
429 #define SCREWUP(str) { why = str; goto screwup; }
431 setimes = targisdir = 0;
436 run_err("ambiguous target");
440 if (targetshouldbedirectory)
442 write(remout, "", 1);
443 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
445 for (first = 1;; first = 0) {
447 if (read(remin, cp, 1) <= 0)
450 SCREWUP("unexpected <newline>");
452 if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
453 SCREWUP("lost connection");
455 } while (cp < &buf[BUFSIZ - 1] && ch != '\n');
458 if (buf[0] == '\01' || buf[0] == '\02') {
461 buf + 1, strlen(buf + 1));
468 write(remout, "", 1);
479 mtime.tv_sec = strtol(cp, &cp, 10);
480 if (!cp || *cp++ != ' ')
481 SCREWUP("mtime.sec not delimited");
482 mtime.tv_usec = strtol(cp, &cp, 10);
483 if (!cp || *cp++ != ' ')
484 SCREWUP("mtime.usec not delimited");
485 atime.tv_sec = strtol(cp, &cp, 10);
486 if (!cp || *cp++ != ' ')
487 SCREWUP("atime.sec not delimited");
488 atime.tv_usec = strtol(cp, &cp, 10);
489 if (!cp || *cp++ != '\0')
490 SCREWUP("atime.usec not delimited");
491 write(remout, "", 1);
494 if (*cp != 'C' && *cp != 'D') {
496 * Check for the case "rcp remote:foo\* local:bar".
497 * In this case, the line "No match." can be returned
498 * by the shell before the rcp command on the remote is
499 * executed so the ^Aerror_message convention isn't
506 SCREWUP("expected control record");
509 for (++cp; cp < buf + 5; cp++) {
510 if (*cp < '0' || *cp > '7')
512 mode = (mode << 3) | (*cp - '0');
515 SCREWUP("mode not delimited");
517 for (size = 0; isdigit((unsigned char)*cp);)
518 size = size * 10 + (*cp++ - '0');
520 SCREWUP("size not delimited");
522 static char *namebuf;
526 need = strlen(targ) + strlen(cp) + 250;
527 if (need > cursize) {
528 if (!(namebuf = malloc(need)))
529 run_err("%s", strerror(errno));
531 snprintf(namebuf, need, "%s%s%s", targ,
532 *targ ? "/" : "", cp);
536 exists = stat(np, &stb) == 0;
538 int mod_flag = pflag;
540 if (!S_ISDIR(stb.st_mode)) {
547 /* Handle copying from a read-only directory */
549 if (mkdir(np, mode | S_IRWXU) < 0)
556 if (utimes(np, tv) < 0)
557 run_err("%s: set times: %s",
558 np, strerror(errno));
566 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
567 bad: run_err("%s: %s", np, strerror(errno));
570 write(remout, "", 1);
571 if ((bp = allocbuf(&buffer, ofd, BUFSIZ)) == NULL) {
577 for (count = i = 0; i < size; i += BUFSIZ) {
582 if((j = net_read(remin, cp, amt)) != amt) {
583 run_err("%s", j ? strerror(errno) :
584 "dropped connection");
589 if (count == bp->cnt) {
590 /* Keep reading so we stay sync'd up. */
592 j = write(ofd, bp->buf, count);
595 wrerrno = j >= 0 ? EIO : errno;
602 if (count != 0 && wrerr == NO &&
603 (j = write(ofd, bp->buf, count)) != count) {
605 wrerrno = j >= 0 ? EIO : errno;
607 if (ftruncate(ofd, size)) {
608 run_err("%s: truncate: %s", np, strerror(errno));
612 if (exists || omode != mode)
613 if (fchmod(ofd, omode))
614 run_err("%s: set mode: %s",
615 np, strerror(errno));
617 if (!exists && omode != mode)
618 if (fchmod(ofd, omode & ~mask))
619 run_err("%s: set mode: %s",
620 np, strerror(errno));
624 if (setimes && wrerr == NO) {
626 if (utimes(np, tv) < 0) {
627 run_err("%s: set times: %s",
628 np, strerror(errno));
634 run_err("%s: %s", np, strerror(wrerrno));
637 write(remout, "", 1);
644 run_err("protocol error: %s", why);
651 char ch, *cp, resp, rbuf[BUFSIZ];
653 if (read(remin, &resp, sizeof(resp)) != sizeof(resp))
663 case 1: /* error, followed by error msg */
664 case 2: /* fatal error, "" */
666 if (read(remin, &ch, sizeof(ch)) != sizeof(ch))
669 } while (cp < &rbuf[BUFSIZ] && ch != '\n');
672 write(STDERR_FILENO, rbuf, cp - rbuf);
684 run_err(const char *fmt, ...)
690 if (fp == NULL && !(fp = fdopen(remout, "w")))
693 fprintf(fp, "%c", 0x01);
694 fprintf(fp, "rcp: ");
695 vfprintf(fp, fmt, ap);
708 * This function executes the given command as the specified user on the
709 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
710 * assigns the input and output file descriptors on success.
712 * If it cannot create necessary pipes it exits with error message.
716 do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout)
718 int pin[2], pout[2], reserved[2];
721 * Reserve two descriptors so that the real pipes won't get
722 * descriptors 0 and 1 because that will screw up dup2 below.
726 /* Create a socket pair for communicating with rsh. */
731 if (pipe(pout) < 0) {
736 /* Free the reserved descriptors. */
740 /* For a child to execute the command on the remote host using rsh. */
754 args[i++] = RSH_PROGRAM;
771 if (remuser != NULL) {
779 execvp(RSH_PROGRAM, args);
783 /* Parent. Close the other side, and return the local side. */