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-rw-r--r--other/ssharp/scp.c1237
1 files changed, 1237 insertions, 0 deletions
diff --git a/other/ssharp/scp.c b/other/ssharp/scp.c
new file mode 100644
index 0000000..1735693
--- /dev/null
+++ b/other/ssharp/scp.c
@@ -0,0 +1,1237 @@
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 1.68 2001/04/22 12:34:05 markus Exp $");
79
80#include "xmalloc.h"
81#include "atomicio.h"
82#include "pathnames.h"
83#include "log.h"
84#include "misc.h"
85#include "scp-common.h"
86
87#ifdef HAVE___PROGNAME
88extern char *__progname;
89#else
90char *__progname;
91#endif
92
93/* For progressmeter() -- number of seconds before xfer considered "stalled" */
94#define STALLTIME 5
95
96/* Progress meter bar */
97#define BAR \
98 "************************************************************"\
99 "************************************************************"\
100 "************************************************************"\
101 "************************************************************"
102#define MAX_BARLENGTH (sizeof(BAR) - 1)
103
104/* Visual statistics about files as they are transferred. */
105void progressmeter(int);
106
107/* Returns width of the terminal (for progress meter calculations). */
108int getttywidth(void);
109int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc);
110
111/* setup arguments for the call to ssh */
112void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2)));
113
114/* Time a transfer started. */
115static struct timeval start;
116
117/* Number of bytes of current file transferred so far. */
118volatile off_t statbytes;
119
120/* Total size of current file. */
121off_t totalbytes = 0;
122
123/* Name of current file being transferred. */
124char *curfile;
125
126/* This is set to non-zero to enable verbose mode. */
127int verbose_mode = 0;
128
129/* This is set to zero if the progressmeter is not desired. */
130int showprogress = 1;
131
132/* This is the program to execute for the secured connection. ("ssh" or -S) */
133char *ssh_program = _PATH_SSH_PROGRAM;
134
135/* This is the list of arguments that scp passes to ssh */
136struct {
137 char **list;
138 int num;
139 int nalloc;
140} args;
141
142/*
143 * This function executes the given command as the specified user on the
144 * given host. This returns < 0 if execution fails, and >= 0 otherwise. This
145 * assigns the input and output file descriptors on success.
146 */
147
148int
149do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc)
150{
151 int pin[2], pout[2], reserved[2];
152
153 if (verbose_mode)
154 fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n",
155 ssh_program, host, remuser ? remuser : "(unspecified)", cmd);
156
157 /*
158 * Reserve two descriptors so that the real pipes won't get
159 * descriptors 0 and 1 because that will screw up dup2 below.
160 */
161 pipe(reserved);
162
163 /* Create a socket pair for communicating with ssh. */
164 if (pipe(pin) < 0)
165 fatal("pipe: %s", strerror(errno));
166 if (pipe(pout) < 0)
167 fatal("pipe: %s", strerror(errno));
168
169 /* Free the reserved descriptors. */
170 close(reserved[0]);
171 close(reserved[1]);
172
173 /* For a child to execute the command on the remote host using ssh. */
174 if (fork() == 0) {
175 /* Child. */
176 close(pin[1]);
177 close(pout[0]);
178 dup2(pin[0], 0);
179 dup2(pout[1], 1);
180 close(pin[0]);
181 close(pout[1]);
182
183 args.list[0] = ssh_program;
184 if (remuser != NULL)
185 addargs("-l%s", remuser);
186 addargs("%s", host);
187 addargs("%s", cmd);
188
189 execvp(ssh_program, args.list);
190 perror(ssh_program);
191 exit(1);
192 }
193 /* Parent. Close the other side, and return the local side. */
194 close(pin[0]);
195 *fdout = pin[1];
196 close(pout[1]);
197 *fdin = pout[0];
198 return 0;
199}
200
201typedef struct {
202 int cnt;
203 char *buf;
204} BUF;
205
206BUF *allocbuf(BUF *, int, int);
207void lostconn(int);
208void nospace(void);
209int okname(char *);
210void run_err(const char *,...);
211void verifydir(char *);
212
213struct passwd *pwd;
214uid_t userid;
215int errs, remin, remout;
216int pflag, iamremote, iamrecursive, targetshouldbedirectory;
217
218#define CMDNEEDS 64
219char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */
220
221int response(void);
222void rsource(char *, struct stat *);
223void sink(int, char *[]);
224void source(int, char *[]);
225void tolocal(int, char *[]);
226void toremote(char *, int, char *[]);
227void usage(void);
228
229int
230main(argc, argv)
231 int argc;
232 char *argv[];
233{
234 int ch, fflag, tflag;
235 char *targ;
236 extern char *optarg;
237 extern int optind;
238
239 __progname = get_progname(argv[0]);
240
241 args.list = NULL;
242 addargs("ssh"); /* overwritten with ssh_program */
243 addargs("-x");
244 addargs("-oFallBackToRsh no");
245
246 fflag = tflag = 0;
247 while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1)
248 switch (ch) {
249 /* User-visible flags. */
250 case '4':
251 case '6':
252 case 'C':
253 addargs("-%c", ch);
254 break;
255 case 'o':
256 case 'c':
257 case 'i':
258 addargs("-%c%s", ch, optarg);
259 break;
260 case 'P':
261 addargs("-p%s", optarg);
262 break;
263 case 'B':
264 addargs("-oBatchmode yes");
265 break;
266 case 'p':
267 pflag = 1;
268 break;
269 case 'r':
270 iamrecursive = 1;
271 break;
272 case 'S':
273 ssh_program = xstrdup(optarg);
274 break;
275 case 'v':
276 verbose_mode = 1;
277 break;
278 case 'q':
279 showprogress = 0;
280 break;
281
282 /* Server options. */
283 case 'd':
284 targetshouldbedirectory = 1;
285 break;
286 case 'f': /* "from" */
287 iamremote = 1;
288 fflag = 1;
289 break;
290 case 't': /* "to" */
291 iamremote = 1;
292 tflag = 1;
293#ifdef HAVE_CYGWIN
294 setmode(0, O_BINARY);
295#endif
296 break;
297 default:
298 usage();
299 }
300 argc -= optind;
301 argv += optind;
302
303 if ((pwd = getpwuid(userid = getuid())) == NULL)
304 fatal("unknown user %d", (int) userid);
305
306 if (!isatty(STDERR_FILENO))
307 showprogress = 0;
308
309 remin = STDIN_FILENO;
310 remout = STDOUT_FILENO;
311
312 if (fflag) {
313 /* Follow "protocol", send data. */
314 (void) response();
315 source(argc, argv);
316 exit(errs != 0);
317 }
318 if (tflag) {
319 /* Receive data. */
320 sink(argc, argv);
321 exit(errs != 0);
322 }
323 if (argc < 2)
324 usage();
325 if (argc > 2)
326 targetshouldbedirectory = 1;
327
328 remin = remout = -1;
329 /* Command to be executed on remote system using "ssh". */
330 (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s",
331 verbose_mode ? " -v" : "",
332 iamrecursive ? " -r" : "", pflag ? " -p" : "",
333 targetshouldbedirectory ? " -d" : "");
334
335 (void) signal(SIGPIPE, lostconn);
336
337 if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */
338 toremote(targ, argc, argv);
339 else {
340 tolocal(argc, argv); /* Dest is local host. */
341 if (targetshouldbedirectory)
342 verifydir(argv[argc - 1]);
343 }
344 exit(errs != 0);
345}
346
347void
348toremote(targ, argc, argv)
349 char *targ, *argv[];
350 int argc;
351{
352 int i, len;
353 char *bp, *host, *src, *suser, *thost, *tuser;
354
355 *targ++ = 0;
356 if (*targ == 0)
357 targ = ".";
358
359 if ((thost = strchr(argv[argc - 1], '@'))) {
360 /* user@host */
361 *thost++ = 0;
362 tuser = argv[argc - 1];
363 if (*tuser == '\0')
364 tuser = NULL;
365 else if (!okname(tuser))
366 exit(1);
367 } else {
368 thost = argv[argc - 1];
369 tuser = NULL;
370 }
371
372 for (i = 0; i < argc - 1; i++) {
373 src = colon(argv[i]);
374 if (src) { /* remote to remote */
375 *src++ = 0;
376 if (*src == 0)
377 src = ".";
378 host = strchr(argv[i], '@');
379 len = strlen(ssh_program) + strlen(argv[i]) +
380 strlen(src) + (tuser ? strlen(tuser) : 0) +
381 strlen(thost) + strlen(targ) + CMDNEEDS + 32;
382 bp = xmalloc(len);
383 if (host) {
384 *host++ = 0;
385 host = cleanhostname(host);
386 suser = argv[i];
387 if (*suser == '\0')
388 suser = pwd->pw_name;
389 else if (!okname(suser))
390 continue;
391 snprintf(bp, len,
392 "%s%s -x -o'FallBackToRsh no' -n "
393 "-l %s %s %s %s '%s%s%s:%s'",
394 ssh_program, verbose_mode ? " -v" : "",
395 suser, host, cmd, src,
396 tuser ? tuser : "", tuser ? "@" : "",
397 thost, targ);
398 } else {
399 host = cleanhostname(argv[i]);
400 snprintf(bp, len,
401 "exec %s%s -x -o'FallBackToRsh no' -n %s "
402 "%s %s '%s%s%s:%s'",
403 ssh_program, verbose_mode ? " -v" : "",
404 host, cmd, src,
405 tuser ? tuser : "", tuser ? "@" : "",
406 thost, targ);
407 }
408 if (verbose_mode)
409 fprintf(stderr, "Executing: %s\n", bp);
410 (void) system(bp);
411 (void) xfree(bp);
412 } else { /* local to remote */
413 if (remin == -1) {
414 len = strlen(targ) + CMDNEEDS + 20;
415 bp = xmalloc(len);
416 (void) snprintf(bp, len, "%s -t %s", cmd, targ);
417 host = cleanhostname(thost);
418 if (do_cmd(host, tuser, bp, &remin,
419 &remout, argc) < 0)
420 exit(1);
421 if (response() < 0)
422 exit(1);
423 (void) xfree(bp);
424 }
425 source(1, argv + i);
426 }
427 }
428}
429
430void
431tolocal(argc, argv)
432 int argc;
433 char *argv[];
434{
435 int i, len;
436 char *bp, *host, *src, *suser;
437
438 for (i = 0; i < argc - 1; i++) {
439 if (!(src = colon(argv[i]))) { /* Local to local. */
440 len = strlen(_PATH_CP) + strlen(argv[i]) +
441 strlen(argv[argc - 1]) + 20;
442 bp = xmalloc(len);
443 (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP,
444 iamrecursive ? " -r" : "", pflag ? " -p" : "",
445 argv[i], argv[argc - 1]);
446 if (verbose_mode)
447 fprintf(stderr, "Executing: %s\n", bp);
448 if (system(bp))
449 ++errs;
450 (void) xfree(bp);
451 continue;
452 }
453 *src++ = 0;
454 if (*src == 0)
455 src = ".";
456 if ((host = strchr(argv[i], '@')) == NULL) {
457 host = argv[i];
458 suser = NULL;
459 } else {
460 *host++ = 0;
461 suser = argv[i];
462 if (*suser == '\0')
463 suser = pwd->pw_name;
464 else if (!okname(suser))
465 continue;
466 }
467 host = cleanhostname(host);
468 len = strlen(src) + CMDNEEDS + 20;
469 bp = xmalloc(len);
470 (void) snprintf(bp, len, "%s -f %s", cmd, src);
471 if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) {
472 (void) xfree(bp);
473 ++errs;
474 continue;
475 }
476 xfree(bp);
477 sink(1, argv + argc - 1);
478 (void) close(remin);
479 remin = remout = -1;
480 }
481}
482
483void
484source(argc, argv)
485 int argc;
486 char *argv[];
487{
488 struct stat stb;
489 static BUF buffer;
490 BUF *bp;
491 off_t i, amt, result;
492 int fd, haderr, indx;
493 char *last, *name, buf[2048];
494 int len;
495
496 for (indx = 0; indx < argc; ++indx) {
497 name = argv[indx];
498 statbytes = 0;
499 len = strlen(name);
500 while (len > 1 && name[len-1] == '/')
501 name[--len] = '\0';
502 if ((fd = open(name, O_RDONLY, 0)) < 0)
503 goto syserr;
504 if (fstat(fd, &stb) < 0) {
505syserr: run_err("%s: %s", name, strerror(errno));
506 goto next;
507 }
508 switch (stb.st_mode & S_IFMT) {
509 case S_IFREG:
510 break;
511 case S_IFDIR:
512 if (iamrecursive) {
513 rsource(name, &stb);
514 goto next;
515 }
516 /* FALLTHROUGH */
517 default:
518 run_err("%s: not a regular file", name);
519 goto next;
520 }
521 if ((last = strrchr(name, '/')) == NULL)
522 last = name;
523 else
524 ++last;
525 curfile = last;
526 if (pflag) {
527 /*
528 * Make it compatible with possible future
529 * versions expecting microseconds.
530 */
531 (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n",
532 (u_long) stb.st_mtime,
533 (u_long) stb.st_atime);
534 (void) atomicio(write, remout, buf, strlen(buf));
535 if (response() < 0)
536 goto next;
537 }
538#define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO)
539#ifdef HAVE_LONG_LONG_INT
540 snprintf(buf, sizeof buf, "C%04o %lld %s\n",
541 (u_int) (stb.st_mode & FILEMODEMASK),
542 (long long) stb.st_size, last);
543#else
544 /* XXX: Handle integer overflow? */
545 snprintf(buf, sizeof buf, "C%04o %lu %s\n",
546 (u_int) (stb.st_mode & FILEMODEMASK),
547 (u_long) stb.st_size, last);
548#endif
549
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) { why = str; goto screwup; }
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 *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 | O_TRUNC, 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 || errno == EAGAIN)) {
840 continue;
841 } else if (j <= 0) {
842 run_err("%s", j ? strerror(errno) :
843 "dropped connection");
844 exit(1);
845 }
846 amt -= j;
847 cp += j;
848 statbytes += j;
849 } while (amt > 0);
850 if (count == bp->cnt) {
851 /* Keep reading so we stay sync'd up. */
852 if (wrerr == NO) {
853 j = atomicio(write, ofd, bp->buf, count);
854 if (j != count) {
855 wrerr = YES;
856 wrerrno = j >= 0 ? EIO : errno;
857 }
858 }
859 count = 0;
860 cp = bp->buf;
861 }
862 }
863 if (showprogress)
864 progressmeter(1);
865 if (count != 0 && wrerr == NO &&
866 (j = atomicio(write, ofd, bp->buf, count)) != count) {
867 wrerr = YES;
868 wrerrno = j >= 0 ? EIO : errno;
869 }
870#if 0
871 if (ftruncate(ofd, size)) {
872 run_err("%s: truncate: %s", np, strerror(errno));
873 wrerr = DISPLAYED;
874 }
875#endif
876 if (pflag) {
877 if (exists || omode != mode)
878#ifdef HAVE_FCHMOD
879 if (fchmod(ofd, omode))
880#else /* HAVE_FCHMOD */
881 if (chmod(np, omode))
882#endif /* HAVE_FCHMOD */
883 run_err("%s: set mode: %s",
884 np, strerror(errno));
885 } else {
886 if (!exists && omode != mode)
887#ifdef HAVE_FCHMOD
888 if (fchmod(ofd, omode & ~mask))
889#else /* HAVE_FCHMOD */
890 if (chmod(np, omode & ~mask))
891#endif /* HAVE_FCHMOD */
892 run_err("%s: set mode: %s",
893 np, strerror(errno));
894 }
895 if (close(ofd) == -1) {
896 wrerr = YES;
897 wrerrno = errno;
898 }
899 (void) response();
900 if (setimes && wrerr == NO) {
901 setimes = 0;
902 if (utimes(np, tv) < 0) {
903 run_err("%s: set times: %s",
904 np, strerror(errno));
905 wrerr = DISPLAYED;
906 }
907 }
908 switch (wrerr) {
909 case YES:
910 run_err("%s: %s", np, strerror(wrerrno));
911 break;
912 case NO:
913 (void) atomicio(write, remout, "", 1);
914 break;
915 case DISPLAYED:
916 break;
917 }
918 }
919screwup:
920 run_err("protocol error: %s", why);
921 exit(1);
922}
923
924int
925response()
926{
927 char ch, *cp, resp, rbuf[2048];
928
929 if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp))
930 lostconn(0);
931
932 cp = rbuf;
933 switch (resp) {
934 case 0: /* ok */
935 return (0);
936 default:
937 *cp++ = resp;
938 /* FALLTHROUGH */
939 case 1: /* error, followed by error msg */
940 case 2: /* fatal error, "" */
941 do {
942 if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch))
943 lostconn(0);
944 *cp++ = ch;
945 } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n');
946
947 if (!iamremote)
948 (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf);
949 ++errs;
950 if (resp == 1)
951 return (-1);
952 exit(1);
953 }
954 /* NOTREACHED */
955}
956
957void
958usage()
959{
960 (void) fprintf(stderr, "usage: scp "
961 "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n"
962 " or: scp [options] f1 ... fn directory\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 = *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_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 = blksize + (stb.st_blksize - blksize % stb.st_blksize) %
1045 stb.st_blksize;
1046#else /* HAVE_ST_BLKSIZE */
1047 size = blksize;
1048#endif /* HAVE_ST_BLKSIZE */
1049 if (bp->cnt >= size)
1050 return (bp);
1051 if (bp->buf == NULL)
1052 bp->buf = xmalloc(size);
1053 else
1054 bp->buf = xrealloc(bp->buf, size);
1055 bp->cnt = size;
1056 return (bp);
1057}
1058
1059void
1060lostconn(signo)
1061 int signo;
1062{
1063 if (!iamremote)
1064 fprintf(stderr, "lost connection\n");
1065 exit(1);
1066}
1067
1068
1069void
1070alarmtimer(int wait)
1071{
1072 struct itimerval itv;
1073
1074 itv.it_value.tv_sec = wait;
1075 itv.it_value.tv_usec = 0;
1076 itv.it_interval = itv.it_value;
1077 setitimer(ITIMER_REAL, &itv, NULL);
1078}
1079
1080void
1081updateprogressmeter(int ignore)
1082{
1083 int save_errno = errno;
1084
1085 progressmeter(0);
1086 errno = save_errno;
1087}
1088
1089int
1090foregroundproc(void)
1091{
1092 static pid_t pgrp = -1;
1093 int ctty_pgrp;
1094
1095 if (pgrp == -1)
1096 pgrp = getpgrp();
1097
1098#ifdef HAVE_TCGETPGRP
1099 return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 &&
1100 ctty_pgrp == pgrp);
1101#else
1102 return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 &&
1103 ctty_pgrp == pgrp));
1104#endif
1105}
1106
1107void
1108progressmeter(int flag)
1109{
1110 static const char prefixes[] = " KMGTP";
1111 static struct timeval lastupdate;
1112 static off_t lastsize;
1113 struct timeval now, td, wait;
1114 off_t cursize, abbrevsize;
1115 double elapsed;
1116 int ratio, barlength, i, remaining;
1117 char buf[256];
1118
1119 if (flag == -1) {
1120 (void) gettimeofday(&start, (struct timezone *) 0);
1121 lastupdate = start;
1122 lastsize = 0;
1123 }
1124 if (foregroundproc() == 0)
1125 return;
1126
1127 (void) gettimeofday(&now, (struct timezone *) 0);
1128 cursize = statbytes;
1129 if (totalbytes != 0) {
1130 ratio = 100.0 * cursize / totalbytes;
1131 ratio = MAX(ratio, 0);
1132 ratio = MIN(ratio, 100);
1133 } else
1134 ratio = 100;
1135
1136 snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio);
1137
1138 barlength = getttywidth() - 51;
1139 barlength = (barlength <= MAX_BARLENGTH)?barlength:MAX_BARLENGTH;
1140 if (barlength > 0) {
1141 i = barlength * ratio / 100;
1142 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1143 "|%.*s%*s|", i, BAR, 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 alarmtimer(1);
1199 } else if (flag == 1) {
1200 alarmtimer(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}
1216
1217void
1218addargs(char *fmt, ...)
1219{
1220 va_list ap;
1221 char buf[1024];
1222
1223 va_start(ap, fmt);
1224 vsnprintf(buf, sizeof(buf), fmt, ap);
1225 va_end(ap);
1226
1227 if (args.list == NULL) {
1228 args.nalloc = 32;
1229 args.num = 0;
1230 args.list = xmalloc(args.nalloc * sizeof(char *));
1231 } else if (args.num+2 >= args.nalloc) {
1232 args.nalloc *= 2;
1233 args.list = xrealloc(args.list, args.nalloc * sizeof(char *));
1234 }
1235 args.list[args.num++] = xstrdup(buf);
1236 args.list[args.num] = NULL;
1237}