Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / crypto / openssh / scp.c
CommitLineData
984263bc
MD
1/*
2 * scp - secure remote copy. This is basically patched BSD rcp which
3 * uses ssh to do the data transfer (instead of using rcmd).
4 *
5 * NOTE: This version should NOT be suid root. (This uses ssh to
6 * do the transfer and ssh has the necessary privileges.)
7 *
8 * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi>
9 *
10 * As far as I am concerned, the code I have written for this software
11 * can be used freely for any purpose. Any derived versions of this
12 * software must be clearly marked as such, and if the derived work is
13 * incompatible with the protocol description in the RFC file, it must be
14 * called by a name other than "ssh" or "Secure Shell".
15 */
16/*
17 * Copyright (c) 1999 Theo de Raadt. All rights reserved.
18 * Copyright (c) 1999 Aaron Campbell. All rights reserved.
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 */
40
41/*
42 * Parts from:
43 *
44 * Copyright (c) 1983, 1990, 1992, 1993, 1995
45 * The Regents of the University of California. All rights reserved.
46 *
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
49 * are met:
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by the University of
58 * California, Berkeley and its contributors.
59 * 4. Neither the name of the University nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
62 *
63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * SUCH DAMAGE.
74 *
75 */
76
77#include "includes.h"
78RCSID("$OpenBSD: scp.c,v 1.91 2002/06/19 00:27:55 deraadt Exp $");
79RCSID("$FreeBSD: src/crypto/openssh/scp.c,v 1.1.1.1.2.6 2003/02/03 17:31:07 des Exp $");
1de703da 80RCSID("$DragonFly: src/crypto/openssh/Attic/scp.c,v 1.2 2003/06/17 04:24:36 dillon Exp $");
984263bc
MD
81
82#include "xmalloc.h"
83#include "atomicio.h"
84#include "pathnames.h"
85#include "log.h"
86#include "misc.h"
87
88#ifdef HAVE___PROGNAME
89extern char *__progname;
90#else
91char *__progname;
92#endif
93
94/* For progressmeter() -- number of seconds before xfer considered "stalled" */
95#define STALLTIME 5
96/* alarm() interval for updating progress meter */
97#define PROGRESSTIME 1
98
99/* Visual statistics about files as they are transferred. */
100void progressmeter(int);
101
102/* Returns width of the terminal (for progress meter calculations). */
103int getttywidth(void);
104int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
105
106/* Struct for addargs */
107arglist args;
108
109/* Time a transfer started. */
110static struct timeval start;
111
112/* Number of bytes of current file transferred so far. */
113volatile off_t statbytes;
114
115/* Total size of current file. */
116off_t totalbytes = 0;
117
118/* Name of current file being transferred. */
119char *curfile;
120
121/* This is set to non-zero to enable verbose mode. */
122int verbose_mode = 0;
123
124/* This is set to zero if the progressmeter is not desired. */
125int showprogress = 1;
126
127/* This is the program to execute for the secured connection. ("ssh" or -S) */
128char *ssh_program = _PATH_SSH_PROGRAM;
129
130/*
131 * This function executes the given command as the specified user on the
132 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
133 * assigns the input and output file descriptors on success.
134 */
135
136int
137do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
138{
139 int pin[2], pout[2], reserved[2];
140
141 if (verbose_mode)
142 fprintf(stderr,
143 "Executing: program %s host %s, user %s, command %s\n",
144 ssh_program, host,
145 remuser ? remuser : "(unspecified)", cmd);
146
147 /*
148 * Reserve two descriptors so that the real pipes won't get
149 * descriptors 0 and 1 because that will screw up dup2 below.
150 */
151 pipe(reserved);
152
153 /* Create a socket pair for communicating with ssh. */
154 if (pipe(pin) < 0)
155 fatal("pipe: %s", strerror(errno));
156 if (pipe(pout) < 0)
157 fatal("pipe: %s", strerror(errno));
158
159 /* Free the reserved descriptors. */
160 close(reserved[0]);
161 close(reserved[1]);
162
163 /* For a child to execute the command on the remote host using ssh. */
164 if (fork() == 0) {
165 /* Child. */
166 close(pin[1]);
167 close(pout[0]);
168 dup2(pin[0], 0);
169 dup2(pout[1], 1);
170 close(pin[0]);
171 close(pout[1]);
172
173 args.list[0] = ssh_program;
174 if (remuser != NULL)
175 addargs(&args, "-l%s", remuser);
176 addargs(&args, "%s", host);
177 addargs(&args, "%s", cmd);
178
179 execvp(ssh_program, args.list);
180 perror(ssh_program);
181 exit(1);
182 }
183 /* Parent. Close the other side, and return the local side. */
184 close(pin[0]);
185 *fdout = pin[1];
186 close(pout[1]);
187 *fdin = pout[0];
188 return 0;
189}
190
191typedef struct {
192 int cnt;
193 char *buf;
194} BUF;
195
196BUF *allocbuf(BUF *, int, int);
197void lostconn(int);
198void nospace(void);
199int okname(char *);
200void run_err(const char *,...);
201void verifydir(char *);
202
203struct passwd *pwd;
204uid_t userid;
205int errs, remin, remout;
206int pflag, iamremote, iamrecursive, targetshouldbedirectory;
207
208#define CMDNEEDS 64
209char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
210
211int response(void);
212void rsource(char *, struct stat *);
213void sink(int, char *[]);
214void source(int, char *[]);
215void tolocal(int, char *[]);
216void toremote(char *, int, char *[]);
217void usage(void);
218
219int
220main(argc, argv)
221 int argc;
222 char *argv[];
223{
224 int ch, fflag, tflag;
225 char *targ;
226 extern char *optarg;
227 extern int optind;
228
229 __progname = get_progname(argv[0]);
230
231 args.list = NULL;
232 addargs(&args, "ssh"); /* overwritten with ssh_program */
233 addargs(&args, "-x");
234 addargs(&args, "-oForwardAgent no");
235 addargs(&args, "-oClearAllForwardings yes");
236
237 fflag = tflag = 0;
238 while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:F:")) != -1)
239 switch (ch) {
240 /* User-visible flags. */
241 case '4':
242 case '6':
243 case 'C':
244 addargs(&args, "-%c", ch);
245 break;
246 case 'o':
247 case 'c':
248 case 'i':
249 case 'F':
250 addargs(&args, "-%c%s", ch, optarg);
251 break;
252 case 'P':
253 addargs(&args, "-p%s", optarg);
254 break;
255 case 'B':
256 addargs(&args, "-oBatchmode yes");
257 break;
258 case 'p':
259 pflag = 1;
260 break;
261 case 'r':
262 iamrecursive = 1;
263 break;
264 case 'S':
265 ssh_program = xstrdup(optarg);
266 break;
267 case 'v':
268 addargs(&args, "-v");
269 verbose_mode = 1;
270 break;
271 case 'q':
272 showprogress = 0;
273 break;
274
275 /* Server options. */
276 case 'd':
277 targetshouldbedirectory = 1;
278 break;
279 case 'f': /* "from" */
280 iamremote = 1;
281 fflag = 1;
282 break;
283 case 't': /* "to" */
284 iamremote = 1;
285 tflag = 1;
286#ifdef HAVE_CYGWIN
287 setmode(0, O_BINARY);
288#endif
289 break;
290 default:
291 usage();
292 }
293 argc -= optind;
294 argv += optind;
295
296 if ((pwd = getpwuid(userid = getuid())) == NULL)
297 fatal("unknown user %d", (int) userid);
298
299 if (!isatty(STDERR_FILENO))
300 showprogress = 0;
301
302 remin = STDIN_FILENO;
303 remout = STDOUT_FILENO;
304
305 if (fflag) {
306 /* Follow "protocol", send data. */
307 (void) response();
308 source(argc, argv);
309 exit(errs != 0);
310 }
311 if (tflag) {
312 /* Receive data. */
313 sink(argc, argv);
314 exit(errs != 0);
315 }
316 if (argc < 2)
317 usage();
318 if (argc > 2)
319 targetshouldbedirectory = 1;
320
321 remin = remout = -1;
322 /* Command to be executed on remote system using "ssh". */
323 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
324 verbose_mode ? " -v" : "",
325 iamrecursive ? " -r" : "", pflag ? " -p" : "",
326 targetshouldbedirectory ? " -d" : "");
327
328 (void) signal(SIGPIPE, lostconn);
329
330 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
331 toremote(targ, argc, argv);
332 else {
333 tolocal(argc, argv); /* Dest is local host. */
334 if (targetshouldbedirectory)
335 verifydir(argv[argc - 1]);
336 }
337 exit(errs != 0);
338}
339
340void
341toremote(targ, argc, argv)
342 char *targ, *argv[];
343 int argc;
344{
345 int i, len;
346 char *bp, *host, *src, *suser, *thost, *tuser;
347
348 *targ++ = 0;
349 if (*targ == 0)
350 targ = ".";
351
352 if ((thost = strchr(argv[argc - 1], '@'))) {
353 /* user@host */
354 *thost++ = 0;
355 tuser = argv[argc - 1];
356 if (*tuser == '\0')
357 tuser = NULL;
358 else if (!okname(tuser))
359 exit(1);
360 } else {
361 thost = argv[argc - 1];
362 tuser = NULL;
363 }
364
365 for (i = 0; i < argc - 1; i++) {
366 src = colon(argv[i]);
367 if (src) { /* remote to remote */
368 static char *ssh_options =
369 "-x -o'ClearAllForwardings yes'";
370 *src++ = 0;
371 if (*src == 0)
372 src = ".";
373 host = strchr(argv[i], '@');
374 len = strlen(ssh_program) + strlen(argv[i]) +
375 strlen(src) + (tuser ? strlen(tuser) : 0) +
376 strlen(thost) + strlen(targ) +
377 strlen(ssh_options) + CMDNEEDS + 20;
378 bp = xmalloc(len);
379 if (host) {
380 *host++ = 0;
381 host = cleanhostname(host);
382 suser = argv[i];
383 if (*suser == '\0')
384 suser = pwd->pw_name;
385 else if (!okname(suser))
386 continue;
387 snprintf(bp, len,
388 "%s%s %s -n "
389 "-l %s %s %s %s '%s%s%s:%s'",
390 ssh_program, verbose_mode ? " -v" : "",
391 ssh_options, suser, host, cmd, src,
392 tuser ? tuser : "", tuser ? "@" : "",
393 thost, targ);
394 } else {
395 host = cleanhostname(argv[i]);
396 snprintf(bp, len,
397 "exec %s%s %s -n %s "
398 "%s %s '%s%s%s:%s'",
399 ssh_program, verbose_mode ? " -v" : "",
400 ssh_options, host, cmd, src,
401 tuser ? tuser : "", tuser ? "@" : "",
402 thost, targ);
403 }
404 if (verbose_mode)
405 fprintf(stderr, "Executing: %s\n", bp);
406 (void) system(bp);
407 (void) xfree(bp);
408 } else { /* local to remote */
409 if (remin == -1) {
410 len = strlen(targ) + CMDNEEDS + 20;
411 bp = xmalloc(len);
412 (void) snprintf(bp, len, "%s -t %s", cmd, targ);
413 host = cleanhostname(thost);
414 if (do_cmd(host, tuser, bp, &remin,
415 &remout, argc) < 0)
416 exit(1);
417 if (response() < 0)
418 exit(1);
419 (void) xfree(bp);
420 }
421 source(1, argv + i);
422 }
423 }
424}
425
426void
427tolocal(argc, argv)
428 int argc;
429 char *argv[];
430{
431 int i, len;
432 char *bp, *host, *src, *suser;
433
434 for (i = 0; i < argc - 1; i++) {
435 if (!(src = colon(argv[i]))) { /* Local to local. */
436 len = strlen(_PATH_CP) + strlen(argv[i]) +
437 strlen(argv[argc - 1]) + 20;
438 bp = xmalloc(len);
439 (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
440 iamrecursive ? " -r" : "", pflag ? " -p" : "",
441 argv[i], argv[argc - 1]);
442 if (verbose_mode)
443 fprintf(stderr, "Executing: %s\n", bp);
444 if (system(bp))
445 ++errs;
446 (void) xfree(bp);
447 continue;
448 }
449 *src++ = 0;
450 if (*src == 0)
451 src = ".";
452 if ((host = strchr(argv[i], '@')) == NULL) {
453 host = argv[i];
454 suser = NULL;
455 } else {
456 *host++ = 0;
457 suser = argv[i];
458 if (*suser == '\0')
459 suser = pwd->pw_name;
460 else if (!okname(suser))
461 continue;
462 }
463 host = cleanhostname(host);
464 len = strlen(src) + CMDNEEDS + 20;
465 bp = xmalloc(len);
466 (void) snprintf(bp, len, "%s -f %s", cmd, src);
467 if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
468 (void) xfree(bp);
469 ++errs;
470 continue;
471 }
472 xfree(bp);
473 sink(1, argv + argc - 1);
474 (void) close(remin);
475 remin = remout = -1;
476 }
477}
478
479void
480source(argc, argv)
481 int argc;
482 char *argv[];
483{
484 struct stat stb;
485 static BUF buffer;
486 BUF *bp;
487 off_t i, amt, result;
488 int fd, haderr, indx;
489 char *last, *name, buf[2048];
490 int len;
491
492 for (indx = 0; indx < argc; ++indx) {
493 name = argv[indx];
494 statbytes = 0;
495 len = strlen(name);
496 while (len > 1 && name[len-1] == '/')
497 name[--len] = '\0';
498 if (strchr(name, '\n') != NULL) {
499 run_err("%s: skipping, filename contains a newline",
500 name);
501 goto next;
502 }
503 if ((fd = open(name, O_RDONLY, 0)) < 0)
504 goto syserr;
505 if (fstat(fd, &stb) < 0) {
506syserr: run_err("%s: %s", name, strerror(errno));
507 goto next;
508 }
509 switch (stb.st_mode & S_IFMT) {
510 case S_IFREG:
511 break;
512 case S_IFDIR:
513 if (iamrecursive) {
514 rsource(name, &stb);
515 goto next;
516 }
517 /* FALLTHROUGH */
518 default:
519 run_err("%s: not a regular file", name);
520 goto next;
521 }
522 if ((last = strrchr(name, '/')) == NULL)
523 last = name;
524 else
525 ++last;
526 curfile = last;
527 if (pflag) {
528 /*
529 * Make it compatible with possible future
530 * versions expecting microseconds.
531 */
532 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
533 (u_long) stb.st_mtime,
534 (u_long) stb.st_atime);
535 (void) atomicio(write, remout, buf, strlen(buf));
536 if (response() < 0)
537 goto next;
538 }
539#define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
540#ifdef HAVE_LONG_LONG_INT
541 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
542 (u_int) (stb.st_mode & FILEMODEMASK),
543 (long long)stb.st_size, last);
544#else
545 /* XXX: Handle integer overflow? */
546 snprintf(buf, sizeof buf, "C%04o %lu %s\n",
547 (u_int) (stb.st_mode & FILEMODEMASK),
548 (u_long) stb.st_size, last);
549#endif
550 if (verbose_mode) {
551 fprintf(stderr, "Sending file modes: %s", buf);
552 fflush(stderr);
553 }
554 (void) atomicio(write, remout, buf, strlen(buf));
555 if (response() < 0)
556 goto next;
557 if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
558next: (void) close(fd);
559 continue;
560 }
561 if (showprogress) {
562 totalbytes = stb.st_size;
563 progressmeter(-1);
564 }
565 /* Keep writing after an error so that we stay sync'd up. */
566 for (haderr = i = 0; i < stb.st_size; i += bp->cnt) {
567 amt = bp->cnt;
568 if (i + amt > stb.st_size)
569 amt = stb.st_size - i;
570 if (!haderr) {
571 result = atomicio(read, fd, bp->buf, amt);
572 if (result != amt)
573 haderr = result >= 0 ? EIO : errno;
574 }
575 if (haderr)
576 (void) atomicio(write, remout, bp->buf, amt);
577 else {
578 result = atomicio(write, remout, bp->buf, amt);
579 if (result != amt)
580 haderr = result >= 0 ? EIO : errno;
581 statbytes += result;
582 }
583 }
584 if (showprogress)
585 progressmeter(1);
586
587 if (close(fd) < 0 && !haderr)
588 haderr = errno;
589 if (!haderr)
590 (void) atomicio(write, remout, "", 1);
591 else
592 run_err("%s: %s", name, strerror(haderr));
593 (void) response();
594 }
595}
596
597void
598rsource(name, statp)
599 char *name;
600 struct stat *statp;
601{
602 DIR *dirp;
603 struct dirent *dp;
604 char *last, *vect[1], path[1100];
605
606 if (!(dirp = opendir(name))) {
607 run_err("%s: %s", name, strerror(errno));
608 return;
609 }
610 last = strrchr(name, '/');
611 if (last == 0)
612 last = name;
613 else
614 last++;
615 if (pflag) {
616 (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n",
617 (u_long) statp->st_mtime,
618 (u_long) statp->st_atime);
619 (void) atomicio(write, remout, path, strlen(path));
620 if (response() < 0) {
621 closedir(dirp);
622 return;
623 }
624 }
625 (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n",
626 (u_int) (statp->st_mode & FILEMODEMASK), 0, last);
627 if (verbose_mode)
628 fprintf(stderr, "Entering directory: %s", path);
629 (void) atomicio(write, remout, path, strlen(path));
630 if (response() < 0) {
631 closedir(dirp);
632 return;
633 }
634 while ((dp = readdir(dirp)) != NULL) {
635 if (dp->d_ino == 0)
636 continue;
637 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
638 continue;
639 if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) {
640 run_err("%s/%s: name too long", name, dp->d_name);
641 continue;
642 }
643 (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name);
644 vect[0] = path;
645 source(1, vect);
646 }
647 (void) closedir(dirp);
648 (void) atomicio(write, remout, "E\n", 2);
649 (void) response();
650}
651
652void
653sink(argc, argv)
654 int argc;
655 char *argv[];
656{
657 static BUF buffer;
658 struct stat stb;
659 enum {
660 YES, NO, DISPLAYED
661 } wrerr;
662 BUF *bp;
663 off_t i, j;
664 int amt, count, exists, first, mask, mode, ofd, omode;
665 off_t size;
666 int setimes, targisdir, wrerrno = 0;
667 char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
668 struct timeval tv[2];
669
670#define atime tv[0]
671#define mtime tv[1]
672#define SCREWUP(str) do { why = str; goto screwup; } while (0)
673
674 setimes = targisdir = 0;
675 mask = umask(0);
676 if (!pflag)
677 (void) umask(mask);
678 if (argc != 1) {
679 run_err("ambiguous target");
680 exit(1);
681 }
682 targ = *argv;
683 if (targetshouldbedirectory)
684 verifydir(targ);
685
686 (void) atomicio(write, remout, "", 1);
687 if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode))
688 targisdir = 1;
689 for (first = 1;; first = 0) {
690 cp = buf;
691 if (atomicio(read, remin, cp, 1) <= 0)
692 return;
693 if (*cp++ == '\n')
694 SCREWUP("unexpected <newline>");
695 do {
696 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
697 SCREWUP("lost connection");
698 *cp++ = ch;
699 } while (cp < &buf[sizeof(buf) - 1] && ch != '\n');
700 *cp = 0;
701
702 if (buf[0] == '\01' || buf[0] == '\02') {
703 if (iamremote == 0)
704 (void) atomicio(write, STDERR_FILENO,
705 buf + 1, strlen(buf + 1));
706 if (buf[0] == '\02')
707 exit(1);
708 ++errs;
709 continue;
710 }
711 if (buf[0] == 'E') {
712 (void) atomicio(write, remout, "", 1);
713 return;
714 }
715 if (ch == '\n')
716 *--cp = 0;
717
718 cp = buf;
719 if (*cp == 'T') {
720 setimes++;
721 cp++;
722 mtime.tv_sec = strtol(cp, &cp, 10);
723 if (!cp || *cp++ != ' ')
724 SCREWUP("mtime.sec not delimited");
725 mtime.tv_usec = strtol(cp, &cp, 10);
726 if (!cp || *cp++ != ' ')
727 SCREWUP("mtime.usec not delimited");
728 atime.tv_sec = strtol(cp, &cp, 10);
729 if (!cp || *cp++ != ' ')
730 SCREWUP("atime.sec not delimited");
731 atime.tv_usec = strtol(cp, &cp, 10);
732 if (!cp || *cp++ != '\0')
733 SCREWUP("atime.usec not delimited");
734 (void) atomicio(write, remout, "", 1);
735 continue;
736 }
737 if (*cp != 'C' && *cp != 'D') {
738 /*
739 * Check for the case "rcp remote:foo\* local:bar".
740 * In this case, the line "No match." can be returned
741 * by the shell before the rcp command on the remote is
742 * executed so the ^Aerror_message convention isn't
743 * followed.
744 */
745 if (first) {
746 run_err("%s", cp);
747 exit(1);
748 }
749 SCREWUP("expected control record");
750 }
751 mode = 0;
752 for (++cp; cp < buf + 5; cp++) {
753 if (*cp < '0' || *cp > '7')
754 SCREWUP("bad mode");
755 mode = (mode << 3) | (*cp - '0');
756 }
757 if (*cp++ != ' ')
758 SCREWUP("mode not delimited");
759
760 for (size = 0; isdigit(*cp);)
761 size = size * 10 + (*cp++ - '0');
762 if (*cp++ != ' ')
763 SCREWUP("size not delimited");
764 if (targisdir) {
765 static char *namebuf;
766 static int cursize;
767 size_t need;
768
769 need = strlen(targ) + strlen(cp) + 250;
770 if (need > cursize) {
771 if (namebuf)
772 xfree(namebuf);
773 namebuf = xmalloc(need);
774 cursize = need;
775 }
776 (void) snprintf(namebuf, need, "%s%s%s", targ,
777 strcmp(targ, "/") ? "/" : "", cp);
778 np = namebuf;
779 } else
780 np = targ;
781 curfile = cp;
782 exists = stat(np, &stb) == 0;
783 if (buf[0] == 'D') {
784 int mod_flag = pflag;
785 if (exists) {
786 if (!S_ISDIR(stb.st_mode)) {
787 errno = ENOTDIR;
788 goto bad;
789 }
790 if (pflag)
791 (void) chmod(np, mode);
792 } else {
793 /* Handle copying from a read-only
794 directory */
795 mod_flag = 1;
796 if (mkdir(np, mode | S_IRWXU) < 0)
797 goto bad;
798 }
799 vect[0] = xstrdup(np);
800 sink(1, vect);
801 if (setimes) {
802 setimes = 0;
803 if (utimes(vect[0], tv) < 0)
804 run_err("%s: set times: %s",
805 vect[0], strerror(errno));
806 }
807 if (mod_flag)
808 (void) chmod(vect[0], mode);
809 if (vect[0])
810 xfree(vect[0]);
811 continue;
812 }
813 omode = mode;
814 mode |= S_IWRITE;
815 if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
816bad: run_err("%s: %s", np, strerror(errno));
817 continue;
818 }
819 (void) atomicio(write, remout, "", 1);
820 if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
821 (void) close(ofd);
822 continue;
823 }
824 cp = bp->buf;
825 wrerr = NO;
826
827 if (showprogress) {
828 totalbytes = size;
829 progressmeter(-1);
830 }
831 statbytes = 0;
832 for (count = i = 0; i < size; i += 4096) {
833 amt = 4096;
834 if (i + amt > size)
835 amt = size - i;
836 count += amt;
837 do {
838 j = read(remin, cp, amt);
839 if (j == -1 && (errno == EINTR ||
840 errno == EAGAIN)) {
841 continue;
842 } else if (j <= 0) {
843 run_err("%s", j ? strerror(errno) :
844 "dropped connection");
845 exit(1);
846 }
847 amt -= j;
848 cp += j;
849 statbytes += j;
850 } while (amt > 0);
851 if (count == bp->cnt) {
852 /* Keep reading so we stay sync'd up. */
853 if (wrerr == NO) {
854 j = atomicio(write, ofd, bp->buf, count);
855 if (j != count) {
856 wrerr = YES;
857 wrerrno = j >= 0 ? EIO : errno;
858 }
859 }
860 count = 0;
861 cp = bp->buf;
862 }
863 }
864 if (showprogress)
865 progressmeter(1);
866 if (count != 0 && wrerr == NO &&
867 (j = atomicio(write, ofd, bp->buf, count)) != count) {
868 wrerr = YES;
869 wrerrno = j >= 0 ? EIO : errno;
870 }
871 if (ftruncate(ofd, size)) {
872 run_err("%s: truncate: %s", np, strerror(errno));
873 wrerr = DISPLAYED;
874 }
875 if (pflag) {
876 if (exists || omode != mode)
877#ifdef HAVE_FCHMOD
878 if (fchmod(ofd, omode))
879#else /* HAVE_FCHMOD */
880 if (chmod(np, omode))
881#endif /* HAVE_FCHMOD */
882 run_err("%s: set mode: %s",
883 np, strerror(errno));
884 } else {
885 if (!exists && omode != mode)
886#ifdef HAVE_FCHMOD
887 if (fchmod(ofd, omode & ~mask))
888#else /* HAVE_FCHMOD */
889 if (chmod(np, omode & ~mask))
890#endif /* HAVE_FCHMOD */
891 run_err("%s: set mode: %s",
892 np, strerror(errno));
893 }
894 if (close(ofd) == -1) {
895 wrerr = YES;
896 wrerrno = errno;
897 }
898 (void) response();
899 if (setimes && wrerr == NO) {
900 setimes = 0;
901 if (utimes(np, tv) < 0) {
902 run_err("%s: set times: %s",
903 np, strerror(errno));
904 wrerr = DISPLAYED;
905 }
906 }
907 switch (wrerr) {
908 case YES:
909 run_err("%s: %s", np, strerror(wrerrno));
910 break;
911 case NO:
912 (void) atomicio(write, remout, "", 1);
913 break;
914 case DISPLAYED:
915 break;
916 }
917 }
918screwup:
919 run_err("protocol error: %s", why);
920 exit(1);
921}
922
923int
924response(void)
925{
926 char ch, *cp, resp, rbuf[2048];
927
928 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
929 lostconn(0);
930
931 cp = rbuf;
932 switch (resp) {
933 case 0: /* ok */
934 return (0);
935 default:
936 *cp++ = resp;
937 /* FALLTHROUGH */
938 case 1: /* error, followed by error msg */
939 case 2: /* fatal error, "" */
940 do {
941 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
942 lostconn(0);
943 *cp++ = ch;
944 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
945
946 if (!iamremote)
947 (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
948 ++errs;
949 if (resp == 1)
950 return (-1);
951 exit(1);
952 }
953 /* NOTREACHED */
954}
955
956void
957usage(void)
958{
959 (void) fprintf(stderr,
960 "usage: scp [-pqrvBC46] [-F config] [-S program] [-P port]\n"
961 " [-c cipher] [-i identity] [-o option]\n"
962 " [[user@]host1:]file1 [...] [[user@]host2:]file2\n");
963 exit(1);
964}
965
966void
967run_err(const char *fmt,...)
968{
969 static FILE *fp;
970 va_list ap;
971
972 ++errs;
973 if (fp == NULL && !(fp = fdopen(remout, "w")))
974 return;
975 (void) fprintf(fp, "%c", 0x01);
976 (void) fprintf(fp, "scp: ");
977 va_start(ap, fmt);
978 (void) vfprintf(fp, fmt, ap);
979 va_end(ap);
980 (void) fprintf(fp, "\n");
981 (void) fflush(fp);
982
983 if (!iamremote) {
984 va_start(ap, fmt);
985 vfprintf(stderr, fmt, ap);
986 va_end(ap);
987 fprintf(stderr, "\n");
988 }
989}
990
991void
992verifydir(cp)
993 char *cp;
994{
995 struct stat stb;
996
997 if (!stat(cp, &stb)) {
998 if (S_ISDIR(stb.st_mode))
999 return;
1000 errno = ENOTDIR;
1001 }
1002 run_err("%s: %s", cp, strerror(errno));
1003 exit(1);
1004}
1005
1006int
1007okname(cp0)
1008 char *cp0;
1009{
1010 int c;
1011 char *cp;
1012
1013 cp = cp0;
1014 do {
1015 c = (int)*cp;
1016 if (c & 0200)
1017 goto bad;
1018 if (!isalpha(c) && !isdigit(c) &&
1019 c != '_' && c != '-' && c != '.' && c != '+')
1020 goto bad;
1021 } while (*++cp);
1022 return (1);
1023
1024bad: fprintf(stderr, "%s: invalid user name\n", cp0);
1025 return (0);
1026}
1027
1028BUF *
1029allocbuf(bp, fd, blksize)
1030 BUF *bp;
1031 int fd, blksize;
1032{
1033 size_t size;
1034#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1035 struct stat stb;
1036
1037 if (fstat(fd, &stb) < 0) {
1038 run_err("fstat: %s", strerror(errno));
1039 return (0);
1040 }
1041 if (stb.st_blksize == 0)
1042 size = blksize;
1043 else
1044 size = roundup(stb.st_blksize, blksize);
1045#else /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1046 size = blksize;
1047#endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */
1048 if (bp->cnt >= size)
1049 return (bp);
1050 if (bp->buf == NULL)
1051 bp->buf = xmalloc(size);
1052 else
1053 bp->buf = xrealloc(bp->buf, size);
1054 memset(bp->buf, 0, size);
1055 bp->cnt = size;
1056 return (bp);
1057}
1058
1059void
1060lostconn(signo)
1061 int signo;
1062{
1063 if (!iamremote)
1064 write(STDERR_FILENO, "lost connection\n", 16);
1065 if (signo)
1066 _exit(1);
1067 else
1068 exit(1);
1069}
1070
1071static void
1072updateprogressmeter(int ignore)
1073{
1074 int save_errno = errno;
1075
1076 progressmeter(0);
1077 signal(SIGALRM, updateprogressmeter);
1078 alarm(PROGRESSTIME);
1079 errno = save_errno;
1080}
1081
1082static int
1083foregroundproc(void)
1084{
1085 static pid_t pgrp = -1;
1086 int ctty_pgrp;
1087
1088 if (pgrp == -1)
1089 pgrp = getpgrp();
1090
1091#ifdef HAVE_TCGETPGRP
1092 return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
1093 ctty_pgrp == pgrp);
1094#else
1095 return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1096 ctty_pgrp == pgrp));
1097#endif
1098}
1099
1100void
1101progressmeter(int flag)
1102{
1103 static const char prefixes[] = " KMGTP";
1104 static struct timeval lastupdate;
1105 static off_t lastsize;
1106 struct timeval now, td, wait;
1107 off_t cursize, abbrevsize;
1108 double elapsed;
1109 int ratio, barlength, i, remaining;
1110 char buf[512];
1111
1112 if (flag == -1) {
1113 (void) gettimeofday(&start, (struct timezone *) 0);
1114 lastupdate = start;
1115 lastsize = 0;
1116 }
1117 if (foregroundproc() == 0)
1118 return;
1119
1120 (void) gettimeofday(&now, (struct timezone *) 0);
1121 cursize = statbytes;
1122 if (totalbytes != 0) {
1123 ratio = 100.0 * cursize / totalbytes;
1124 ratio = MAX(ratio, 0);
1125 ratio = MIN(ratio, 100);
1126 } else
1127 ratio = 100;
1128
1129 snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1130
1131 barlength = getttywidth() - 51;
1132 if (barlength > 0) {
1133 i = barlength * ratio / 100;
1134 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1135 "|%.*s%*s|", i,
1136 "*******************************************************"
1137 "*******************************************************"
1138 "*******************************************************"
1139 "*******************************************************"
1140 "*******************************************************"
1141 "*******************************************************"
1142 "*******************************************************",
1143 barlength - i, "");
1144 }
1145 i = 0;
1146 abbrevsize = cursize;
1147 while (abbrevsize >= 100000 && i < sizeof(prefixes)) {
1148 i++;
1149 abbrevsize >>= 10;
1150 }
1151 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5lu %c%c ",
1152 (unsigned long) abbrevsize, prefixes[i],
1153 prefixes[i] == ' ' ? ' ' : 'B');
1154
1155 timersub(&now, &lastupdate, &wait);
1156 if (cursize > lastsize) {
1157 lastupdate = now;
1158 lastsize = cursize;
1159 if (wait.tv_sec >= STALLTIME) {
1160 start.tv_sec += wait.tv_sec;
1161 start.tv_usec += wait.tv_usec;
1162 }
1163 wait.tv_sec = 0;
1164 }
1165 timersub(&now, &start, &td);
1166 elapsed = td.tv_sec + (td.tv_usec / 1000000.0);
1167
1168 if (flag != 1 &&
1169 (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) {
1170 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1171 " --:-- ETA");
1172 } else if (wait.tv_sec >= STALLTIME) {
1173 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1174 " - stalled -");
1175 } else {
1176 if (flag != 1)
1177 remaining = (int)(totalbytes / (statbytes / elapsed) -
1178 elapsed);
1179 else
1180 remaining = elapsed;
1181
1182 i = remaining / 3600;
1183 if (i)
1184 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1185 "%2d:", i);
1186 else
1187 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1188 " ");
1189 i = remaining % 3600;
1190 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1191 "%02d:%02d%s", i / 60, i % 60,
1192 (flag != 1) ? " ETA" : " ");
1193 }
1194 atomicio(write, fileno(stdout), buf, strlen(buf));
1195
1196 if (flag == -1) {
1197 mysignal(SIGALRM, updateprogressmeter);
1198 alarm(PROGRESSTIME);
1199 } else if (flag == 1) {
1200 alarm(0);
1201 atomicio(write, fileno(stdout), "\n", 1);
1202 statbytes = 0;
1203 }
1204}
1205
1206int
1207getttywidth(void)
1208{
1209 struct winsize winsize;
1210
1211 if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1)
1212 return (winsize.ws_col ? winsize.ws_col : 80);
1213 else
1214 return (80);
1215}