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Commit | Line | Data |
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1 | /* | |
2 | * | |
3 | * scp - secure remote copy. This is basically patched BSD rcp which uses ssh | |
4 | * to do the data transfer (instead of using rcmd). | |
5 | * | |
6 | * NOTE: This version should NOT be suid root. (This uses ssh to do the transfer | |
7 | * and ssh has the necessary privileges.) | |
8 | * | |
9 | * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi> | |
10 | * | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Parts from: | |
15 | * | |
16 | * Copyright (c) 1983, 1990, 1992, 1993, 1995 | |
17 | * The Regents of the University of California. All rights reserved. | |
18 | * | |
19 | * Redistribution and use in source and binary forms, with or without | |
20 | * modification, are permitted provided that the following conditions | |
21 | * are met: | |
22 | * 1. Redistributions of source code must retain the above copyright | |
23 | * notice, this list of conditions and the following disclaimer. | |
24 | * 2. Redistributions in binary form must reproduce the above copyright | |
25 | * notice, this list of conditions and the following disclaimer in the | |
26 | * documentation and/or other materials provided with the distribution. | |
27 | * 3. All advertising materials mentioning features or use of this software | |
28 | * must display the following acknowledgement: | |
29 | * This product includes software developed by the University of | |
30 | * California, Berkeley and its contributors. | |
31 | * 4. Neither the name of the University nor the names of its contributors | |
32 | * may be used to endorse or promote products derived from this software | |
33 | * without specific prior written permission. | |
34 | * | |
35 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
36 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
37 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
38 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
39 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
40 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
41 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
42 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
43 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
44 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
45 | * SUCH DAMAGE. | |
46 | * | |
47 | */ | |
48 | ||
49 | #include "includes.h" | |
50 | RCSID("$OpenBSD: scp.c,v 1.35 2000/08/19 02:50:07 deraadt Exp $"); | |
51 | ||
52 | #include "ssh.h" | |
53 | #include "xmalloc.h" | |
54 | #include <utime.h> | |
55 | ||
56 | #define _PATH_CP "cp" | |
57 | ||
58 | /* For progressmeter() -- number of seconds before xfer considered "stalled" */ | |
59 | #define STALLTIME 5 | |
60 | ||
61 | /* Progress meter bar */ | |
62 | #define BAR \ | |
63 | "************************************************************"\ | |
64 | "************************************************************"\ | |
65 | "************************************************************"\ | |
66 | "************************************************************" | |
67 | #define MAX_BARLENGTH (sizeof(BAR) - 1) | |
68 | ||
69 | /* Visual statistics about files as they are transferred. */ | |
70 | void progressmeter(int); | |
71 | ||
72 | /* Returns width of the terminal (for progress meter calculations). */ | |
73 | int getttywidth(void); | |
74 | int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc); | |
75 | ||
76 | /* Time a transfer started. */ | |
77 | static struct timeval start; | |
78 | ||
79 | /* Number of bytes of current file transferred so far. */ | |
80 | volatile unsigned long statbytes; | |
81 | ||
82 | /* Total size of current file. */ | |
83 | off_t totalbytes = 0; | |
84 | ||
85 | /* Name of current file being transferred. */ | |
86 | char *curfile; | |
87 | ||
88 | /* This is set to non-zero if IPv4 is desired. */ | |
89 | int IPv4 = 0; | |
90 | ||
91 | /* This is set to non-zero if IPv6 is desired. */ | |
92 | int IPv6 = 0; | |
93 | ||
94 | /* This is set to non-zero to enable verbose mode. */ | |
95 | int verbose_mode = 0; | |
96 | ||
97 | /* This is set to non-zero if compression is desired. */ | |
98 | int compress_flag = 0; | |
99 | ||
100 | /* This is set to zero if the progressmeter is not desired. */ | |
101 | int showprogress = 1; | |
102 | ||
103 | /* This is set to non-zero if running in batch mode (that is, password | |
104 | and passphrase queries are not allowed). */ | |
105 | int batchmode = 0; | |
106 | ||
107 | /* This is set to the cipher type string if given on the command line. */ | |
108 | char *cipher = NULL; | |
109 | ||
110 | /* This is set to the RSA authentication identity file name if given on | |
111 | the command line. */ | |
112 | char *identity = NULL; | |
113 | ||
114 | /* This is the port to use in contacting the remote site (is non-NULL). */ | |
115 | char *port = NULL; | |
116 | ||
117 | /* This is the program to execute for the secured connection. ("ssh" or -S) */ | |
118 | char *ssh_program = SSH_PROGRAM; | |
119 | ||
120 | /* | |
121 | * This function executes the given command as the specified user on the | |
122 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
123 | * assigns the input and output file descriptors on success. | |
124 | */ | |
125 | ||
126 | int | |
127 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc) | |
128 | { | |
129 | int pin[2], pout[2], reserved[2]; | |
130 | ||
131 | if (verbose_mode) | |
132 | fprintf(stderr, "Executing: host %s, user %s, command %s\n", | |
133 | host, remuser ? remuser : "(unspecified)", cmd); | |
134 | ||
135 | /* | |
136 | * Reserve two descriptors so that the real pipes won't get | |
137 | * descriptors 0 and 1 because that will screw up dup2 below. | |
138 | */ | |
139 | pipe(reserved); | |
140 | ||
141 | /* Create a socket pair for communicating with ssh. */ | |
142 | if (pipe(pin) < 0) | |
143 | fatal("pipe: %s", strerror(errno)); | |
144 | if (pipe(pout) < 0) | |
145 | fatal("pipe: %s", strerror(errno)); | |
146 | ||
147 | /* Free the reserved descriptors. */ | |
148 | close(reserved[0]); | |
149 | close(reserved[1]); | |
150 | ||
151 | /* For a child to execute the command on the remote host using ssh. */ | |
152 | if (fork() == 0) { | |
153 | char *args[100]; /* XXX careful */ | |
154 | unsigned int i; | |
155 | ||
156 | /* Child. */ | |
157 | close(pin[1]); | |
158 | close(pout[0]); | |
159 | dup2(pin[0], 0); | |
160 | dup2(pout[1], 1); | |
161 | close(pin[0]); | |
162 | close(pout[1]); | |
163 | ||
164 | i = 0; | |
165 | args[i++] = ssh_program; | |
166 | args[i++] = "-x"; | |
167 | args[i++] = "-oFallBackToRsh no"; | |
168 | if (IPv4) | |
169 | args[i++] = "-4"; | |
170 | if (IPv6) | |
171 | args[i++] = "-6"; | |
172 | if (verbose_mode) | |
173 | args[i++] = "-v"; | |
174 | if (compress_flag) | |
175 | args[i++] = "-C"; | |
176 | if (batchmode) | |
177 | args[i++] = "-oBatchMode yes"; | |
178 | if (cipher != NULL) { | |
179 | args[i++] = "-c"; | |
180 | args[i++] = cipher; | |
181 | } | |
182 | if (identity != NULL) { | |
183 | args[i++] = "-i"; | |
184 | args[i++] = identity; | |
185 | } | |
186 | if (port != NULL) { | |
187 | args[i++] = "-p"; | |
188 | args[i++] = port; | |
189 | } | |
190 | if (remuser != NULL) { | |
191 | args[i++] = "-l"; | |
192 | args[i++] = remuser; | |
193 | } | |
194 | args[i++] = host; | |
195 | args[i++] = cmd; | |
196 | args[i++] = NULL; | |
197 | ||
198 | execvp(ssh_program, args); | |
199 | perror(ssh_program); | |
200 | exit(1); | |
201 | } | |
202 | /* Parent. Close the other side, and return the local side. */ | |
203 | close(pin[0]); | |
204 | *fdout = pin[1]; | |
205 | close(pout[1]); | |
206 | *fdin = pout[0]; | |
207 | return 0; | |
208 | } | |
209 | ||
210 | void | |
211 | fatal(const char *fmt,...) | |
212 | { | |
213 | va_list ap; | |
214 | char buf[1024]; | |
215 | ||
216 | va_start(ap, fmt); | |
217 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
218 | va_end(ap); | |
219 | fprintf(stderr, "%s\n", buf); | |
220 | exit(255); | |
221 | } | |
222 | ||
223 | typedef struct { | |
224 | int cnt; | |
225 | char *buf; | |
226 | } BUF; | |
227 | ||
228 | extern int iamremote; | |
229 | ||
230 | BUF *allocbuf(BUF *, int, int); | |
231 | char *colon(char *); | |
232 | void lostconn(int); | |
233 | void nospace(void); | |
234 | int okname(char *); | |
235 | void run_err(const char *,...); | |
236 | void verifydir(char *); | |
237 | ||
238 | struct passwd *pwd; | |
239 | uid_t userid; | |
240 | int errs, remin, remout; | |
241 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
242 | ||
243 | #define CMDNEEDS 64 | |
244 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
245 | ||
246 | int response(void); | |
247 | void rsource(char *, struct stat *); | |
248 | void sink(int, char *[]); | |
249 | void source(int, char *[]); | |
250 | void tolocal(int, char *[]); | |
251 | void toremote(char *, int, char *[]); | |
252 | void usage(void); | |
253 | ||
254 | int | |
255 | main(argc, argv) | |
256 | int argc; | |
257 | char *argv[]; | |
258 | { | |
259 | int ch, fflag, tflag; | |
260 | char *targ; | |
261 | extern char *optarg; | |
262 | extern int optind; | |
263 | ||
264 | fflag = tflag = 0; | |
265 | while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S")) != EOF) | |
266 | switch (ch) { | |
267 | /* User-visible flags. */ | |
268 | case '4': | |
269 | IPv4 = 1; | |
270 | break; | |
271 | case '6': | |
272 | IPv6 = 1; | |
273 | break; | |
274 | case 'p': | |
275 | pflag = 1; | |
276 | break; | |
277 | case 'P': | |
278 | port = optarg; | |
279 | break; | |
280 | case 'r': | |
281 | iamrecursive = 1; | |
282 | break; | |
283 | case 'S': | |
284 | ssh_program = optarg; | |
285 | break; | |
286 | ||
287 | /* Server options. */ | |
288 | case 'd': | |
289 | targetshouldbedirectory = 1; | |
290 | break; | |
291 | case 'f': /* "from" */ | |
292 | iamremote = 1; | |
293 | fflag = 1; | |
294 | break; | |
295 | case 't': /* "to" */ | |
296 | iamremote = 1; | |
297 | tflag = 1; | |
298 | break; | |
299 | case 'c': | |
300 | cipher = optarg; | |
301 | break; | |
302 | case 'i': | |
303 | identity = optarg; | |
304 | break; | |
305 | case 'v': | |
306 | verbose_mode = 1; | |
307 | break; | |
308 | case 'B': | |
309 | batchmode = 1; | |
310 | break; | |
311 | case 'C': | |
312 | compress_flag = 1; | |
313 | break; | |
314 | case 'q': | |
315 | showprogress = 0; | |
316 | break; | |
317 | case '?': | |
318 | default: | |
319 | usage(); | |
320 | } | |
321 | argc -= optind; | |
322 | argv += optind; | |
323 | ||
324 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
325 | fatal("unknown user %d", (int) userid); | |
326 | ||
327 | if (!isatty(STDERR_FILENO)) | |
328 | showprogress = 0; | |
329 | ||
330 | remin = STDIN_FILENO; | |
331 | remout = STDOUT_FILENO; | |
332 | ||
333 | if (fflag) { | |
334 | /* Follow "protocol", send data. */ | |
335 | (void) response(); | |
336 | source(argc, argv); | |
337 | exit(errs != 0); | |
338 | } | |
339 | if (tflag) { | |
340 | /* Receive data. */ | |
341 | sink(argc, argv); | |
342 | exit(errs != 0); | |
343 | } | |
344 | if (argc < 2) | |
345 | usage(); | |
346 | if (argc > 2) | |
347 | targetshouldbedirectory = 1; | |
348 | ||
349 | remin = remout = -1; | |
350 | /* Command to be executed on remote system using "ssh". */ | |
351 | (void) sprintf(cmd, "scp%s%s%s%s", verbose_mode ? " -v" : "", | |
352 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
353 | targetshouldbedirectory ? " -d" : ""); | |
354 | ||
355 | (void) signal(SIGPIPE, lostconn); | |
356 | ||
357 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
358 | toremote(targ, argc, argv); | |
359 | else { | |
360 | tolocal(argc, argv); /* Dest is local host. */ | |
361 | if (targetshouldbedirectory) | |
362 | verifydir(argv[argc - 1]); | |
363 | } | |
364 | exit(errs != 0); | |
365 | } | |
366 | ||
367 | char * | |
368 | cleanhostname(host) | |
369 | char *host; | |
370 | { | |
371 | if (*host == '[' && host[strlen(host) - 1] == ']') { | |
372 | host[strlen(host) - 1] = '\0'; | |
373 | return (host + 1); | |
374 | } else | |
375 | return host; | |
376 | } | |
377 | ||
378 | void | |
379 | toremote(targ, argc, argv) | |
380 | char *targ, *argv[]; | |
381 | int argc; | |
382 | { | |
383 | int i, len; | |
384 | char *bp, *host, *src, *suser, *thost, *tuser; | |
385 | ||
386 | *targ++ = 0; | |
387 | if (*targ == 0) | |
388 | targ = "."; | |
389 | ||
390 | if ((thost = strchr(argv[argc - 1], '@'))) { | |
391 | /* user@host */ | |
392 | *thost++ = 0; | |
393 | tuser = argv[argc - 1]; | |
394 | if (*tuser == '\0') | |
395 | tuser = NULL; | |
396 | else if (!okname(tuser)) | |
397 | exit(1); | |
398 | } else { | |
399 | thost = argv[argc - 1]; | |
400 | tuser = NULL; | |
401 | } | |
402 | ||
403 | for (i = 0; i < argc - 1; i++) { | |
404 | src = colon(argv[i]); | |
405 | if (src) { /* remote to remote */ | |
406 | *src++ = 0; | |
407 | if (*src == 0) | |
408 | src = "."; | |
409 | host = strchr(argv[i], '@'); | |
410 | len = strlen(ssh_program) + strlen(argv[i]) + | |
411 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
412 | strlen(thost) + strlen(targ) + CMDNEEDS + 32; | |
413 | bp = xmalloc(len); | |
414 | if (host) { | |
415 | *host++ = 0; | |
416 | host = cleanhostname(host); | |
417 | suser = argv[i]; | |
418 | if (*suser == '\0') | |
419 | suser = pwd->pw_name; | |
420 | else if (!okname(suser)) | |
421 | continue; | |
422 | (void) sprintf(bp, | |
423 | "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'", | |
424 | ssh_program, verbose_mode ? " -v" : "", | |
425 | suser, host, cmd, src, | |
426 | tuser ? tuser : "", tuser ? "@" : "", | |
427 | thost, targ); | |
428 | } else { | |
429 | host = cleanhostname(argv[i]); | |
430 | (void) sprintf(bp, | |
431 | "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'", | |
432 | ssh_program, verbose_mode ? " -v" : "", | |
433 | host, cmd, src, | |
434 | tuser ? tuser : "", tuser ? "@" : "", | |
435 | thost, targ); | |
436 | } | |
437 | if (verbose_mode) | |
438 | fprintf(stderr, "Executing: %s\n", bp); | |
439 | (void) system(bp); | |
440 | (void) xfree(bp); | |
441 | } else { /* local to remote */ | |
442 | if (remin == -1) { | |
443 | len = strlen(targ) + CMDNEEDS + 20; | |
444 | bp = xmalloc(len); | |
445 | (void) sprintf(bp, "%s -t %s", cmd, targ); | |
446 | host = cleanhostname(thost); | |
447 | if (do_cmd(host, tuser, bp, &remin, | |
448 | &remout, argc) < 0) | |
449 | exit(1); | |
450 | if (response() < 0) | |
451 | exit(1); | |
452 | (void) xfree(bp); | |
453 | } | |
454 | source(1, argv + i); | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
459 | void | |
460 | tolocal(argc, argv) | |
461 | int argc; | |
462 | char *argv[]; | |
463 | { | |
464 | int i, len; | |
465 | char *bp, *host, *src, *suser; | |
466 | ||
467 | for (i = 0; i < argc - 1; i++) { | |
468 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
469 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
470 | strlen(argv[argc - 1]) + 20; | |
471 | bp = xmalloc(len); | |
472 | (void) sprintf(bp, "exec %s%s%s %s %s", _PATH_CP, | |
473 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
474 | argv[i], argv[argc - 1]); | |
475 | if (verbose_mode) | |
476 | fprintf(stderr, "Executing: %s\n", bp); | |
477 | if (system(bp)) | |
478 | ++errs; | |
479 | (void) xfree(bp); | |
480 | continue; | |
481 | } | |
482 | *src++ = 0; | |
483 | if (*src == 0) | |
484 | src = "."; | |
485 | if ((host = strchr(argv[i], '@')) == NULL) { | |
486 | host = argv[i]; | |
487 | suser = NULL; | |
488 | } else { | |
489 | *host++ = 0; | |
490 | suser = argv[i]; | |
491 | if (*suser == '\0') | |
492 | suser = pwd->pw_name; | |
493 | else if (!okname(suser)) | |
494 | continue; | |
495 | } | |
496 | host = cleanhostname(host); | |
497 | len = strlen(src) + CMDNEEDS + 20; | |
498 | bp = xmalloc(len); | |
499 | (void) sprintf(bp, "%s -f %s", cmd, src); | |
500 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
501 | (void) xfree(bp); | |
502 | ++errs; | |
503 | continue; | |
504 | } | |
505 | xfree(bp); | |
506 | sink(1, argv + argc - 1); | |
507 | (void) close(remin); | |
508 | remin = remout = -1; | |
509 | } | |
510 | } | |
511 | ||
512 | void | |
513 | source(argc, argv) | |
514 | int argc; | |
515 | char *argv[]; | |
516 | { | |
517 | struct stat stb; | |
518 | static BUF buffer; | |
519 | BUF *bp; | |
520 | off_t i; | |
521 | int amt, fd, haderr, indx, result; | |
522 | char *last, *name, buf[2048]; | |
523 | ||
524 | for (indx = 0; indx < argc; ++indx) { | |
525 | name = argv[indx]; | |
526 | statbytes = 0; | |
527 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
528 | goto syserr; | |
529 | if (fstat(fd, &stb) < 0) { | |
530 | syserr: run_err("%s: %s", name, strerror(errno)); | |
531 | goto next; | |
532 | } | |
533 | switch (stb.st_mode & S_IFMT) { | |
534 | case S_IFREG: | |
535 | break; | |
536 | case S_IFDIR: | |
537 | if (iamrecursive) { | |
538 | rsource(name, &stb); | |
539 | goto next; | |
540 | } | |
541 | /* FALLTHROUGH */ | |
542 | default: | |
543 | run_err("%s: not a regular file", name); | |
544 | goto next; | |
545 | } | |
546 | if ((last = strrchr(name, '/')) == NULL) | |
547 | last = name; | |
548 | else | |
549 | ++last; | |
550 | curfile = last; | |
551 | if (pflag) { | |
552 | /* | |
553 | * Make it compatible with possible future | |
554 | * versions expecting microseconds. | |
555 | */ | |
556 | (void) sprintf(buf, "T%lu 0 %lu 0\n", | |
557 | (unsigned long) stb.st_mtime, | |
558 | (unsigned long) stb.st_atime); | |
559 | (void) atomicio(write, remout, buf, strlen(buf)); | |
560 | if (response() < 0) | |
561 | goto next; | |
562 | } | |
563 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
564 | (void) sprintf(buf, "C%04o %lu %s\n", | |
565 | (unsigned int) (stb.st_mode & FILEMODEMASK), | |
566 | (unsigned long) stb.st_size, | |
567 | last); | |
568 | if (verbose_mode) { | |
569 | fprintf(stderr, "Sending file modes: %s", buf); | |
570 | fflush(stderr); | |
571 | } | |
572 | (void) atomicio(write, remout, buf, strlen(buf)); | |
573 | if (response() < 0) | |
574 | goto next; | |
575 | if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { | |
576 | next: (void) close(fd); | |
577 | continue; | |
578 | } | |
579 | if (showprogress) { | |
580 | totalbytes = stb.st_size; | |
581 | progressmeter(-1); | |
582 | } | |
583 | /* Keep writing after an error so that we stay sync'd up. */ | |
584 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
585 | amt = bp->cnt; | |
586 | if (i + amt > stb.st_size) | |
587 | amt = stb.st_size - i; | |
588 | if (!haderr) { | |
589 | result = atomicio(read, fd, bp->buf, amt); | |
590 | if (result != amt) | |
591 | haderr = result >= 0 ? EIO : errno; | |
592 | } | |
593 | if (haderr) | |
594 | (void) atomicio(write, remout, bp->buf, amt); | |
595 | else { | |
596 | result = atomicio(write, remout, bp->buf, amt); | |
597 | if (result != amt) | |
598 | haderr = result >= 0 ? EIO : errno; | |
599 | statbytes += result; | |
600 | } | |
601 | } | |
602 | if (showprogress) | |
603 | progressmeter(1); | |
604 | ||
605 | if (close(fd) < 0 && !haderr) | |
606 | haderr = errno; | |
607 | if (!haderr) | |
608 | (void) atomicio(write, remout, "", 1); | |
609 | else | |
610 | run_err("%s: %s", name, strerror(haderr)); | |
611 | (void) response(); | |
612 | } | |
613 | } | |
614 | ||
615 | void | |
616 | rsource(name, statp) | |
617 | char *name; | |
618 | struct stat *statp; | |
619 | { | |
620 | DIR *dirp; | |
621 | struct dirent *dp; | |
622 | char *last, *vect[1], path[1100]; | |
623 | ||
624 | if (!(dirp = opendir(name))) { | |
625 | run_err("%s: %s", name, strerror(errno)); | |
626 | return; | |
627 | } | |
628 | last = strrchr(name, '/'); | |
629 | if (last == 0) | |
630 | last = name; | |
631 | else | |
632 | last++; | |
633 | if (pflag) { | |
634 | (void) sprintf(path, "T%lu 0 %lu 0\n", | |
635 | (unsigned long) statp->st_mtime, | |
636 | (unsigned long) statp->st_atime); | |
637 | (void) atomicio(write, remout, path, strlen(path)); | |
638 | if (response() < 0) { | |
639 | closedir(dirp); | |
640 | return; | |
641 | } | |
642 | } | |
643 | (void) sprintf(path, "D%04o %d %.1024s\n", | |
644 | (unsigned int) (statp->st_mode & FILEMODEMASK), 0, last); | |
645 | if (verbose_mode) | |
646 | fprintf(stderr, "Entering directory: %s", path); | |
647 | (void) atomicio(write, remout, path, strlen(path)); | |
648 | if (response() < 0) { | |
649 | closedir(dirp); | |
650 | return; | |
651 | } | |
652 | while ((dp = readdir(dirp))) { | |
653 | if (dp->d_ino == 0) | |
654 | continue; | |
655 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
656 | continue; | |
657 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
658 | run_err("%s/%s: name too long", name, dp->d_name); | |
659 | continue; | |
660 | } | |
661 | (void) sprintf(path, "%s/%s", name, dp->d_name); | |
662 | vect[0] = path; | |
663 | source(1, vect); | |
664 | } | |
665 | (void) closedir(dirp); | |
666 | (void) atomicio(write, remout, "E\n", 2); | |
667 | (void) response(); | |
668 | } | |
669 | ||
670 | void | |
671 | sink(argc, argv) | |
672 | int argc; | |
673 | char *argv[]; | |
674 | { | |
675 | static BUF buffer; | |
676 | struct stat stb; | |
677 | enum { | |
678 | YES, NO, DISPLAYED | |
679 | } wrerr; | |
680 | BUF *bp; | |
681 | off_t i, j; | |
682 | int amt, count, exists, first, mask, mode, ofd, omode; | |
683 | int setimes, size, targisdir, wrerrno = 0; | |
684 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
685 | struct utimbuf ut; | |
686 | int dummy_usec; | |
687 | ||
688 | #define SCREWUP(str) { why = str; goto screwup; } | |
689 | ||
690 | setimes = targisdir = 0; | |
691 | mask = umask(0); | |
692 | if (!pflag) | |
693 | (void) umask(mask); | |
694 | if (argc != 1) { | |
695 | run_err("ambiguous target"); | |
696 | exit(1); | |
697 | } | |
698 | targ = *argv; | |
699 | if (targetshouldbedirectory) | |
700 | verifydir(targ); | |
701 | ||
702 | (void) atomicio(write, remout, "", 1); | |
703 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) | |
704 | targisdir = 1; | |
705 | for (first = 1;; first = 0) { | |
706 | cp = buf; | |
707 | if (atomicio(read, remin, cp, 1) <= 0) | |
708 | return; | |
709 | if (*cp++ == '\n') | |
710 | SCREWUP("unexpected <newline>"); | |
711 | do { | |
712 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
713 | SCREWUP("lost connection"); | |
714 | *cp++ = ch; | |
715 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
716 | *cp = 0; | |
717 | ||
718 | if (buf[0] == '\01' || buf[0] == '\02') { | |
719 | if (iamremote == 0) | |
720 | (void) atomicio(write, STDERR_FILENO, | |
721 | buf + 1, strlen(buf + 1)); | |
722 | if (buf[0] == '\02') | |
723 | exit(1); | |
724 | ++errs; | |
725 | continue; | |
726 | } | |
727 | if (buf[0] == 'E') { | |
728 | (void) atomicio(write, remout, "", 1); | |
729 | return; | |
730 | } | |
731 | if (ch == '\n') | |
732 | *--cp = 0; | |
733 | ||
734 | #define getnum(t) (t) = 0; \ | |
735 | while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0'); | |
736 | cp = buf; | |
737 | if (*cp == 'T') { | |
738 | setimes++; | |
739 | cp++; | |
740 | getnum(ut.modtime); | |
741 | if (*cp++ != ' ') | |
742 | SCREWUP("mtime.sec not delimited"); | |
743 | getnum(dummy_usec); | |
744 | if (*cp++ != ' ') | |
745 | SCREWUP("mtime.usec not delimited"); | |
746 | getnum(ut.actime); | |
747 | if (*cp++ != ' ') | |
748 | SCREWUP("atime.sec not delimited"); | |
749 | getnum(dummy_usec); | |
750 | if (*cp++ != '\0') | |
751 | SCREWUP("atime.usec not delimited"); | |
752 | (void) atomicio(write, remout, "", 1); | |
753 | continue; | |
754 | } | |
755 | if (*cp != 'C' && *cp != 'D') { | |
756 | /* | |
757 | * Check for the case "rcp remote:foo\* local:bar". | |
758 | * In this case, the line "No match." can be returned | |
759 | * by the shell before the rcp command on the remote is | |
760 | * executed so the ^Aerror_message convention isn't | |
761 | * followed. | |
762 | */ | |
763 | if (first) { | |
764 | run_err("%s", cp); | |
765 | exit(1); | |
766 | } | |
767 | SCREWUP("expected control record"); | |
768 | } | |
769 | mode = 0; | |
770 | for (++cp; cp < buf + 5; cp++) { | |
771 | if (*cp < '0' || *cp > '7') | |
772 | SCREWUP("bad mode"); | |
773 | mode = (mode << 3) | (*cp - '0'); | |
774 | } | |
775 | if (*cp++ != ' ') | |
776 | SCREWUP("mode not delimited"); | |
777 | ||
778 | for (size = 0; *cp >= '0' && *cp <= '9';) | |
779 | size = size * 10 + (*cp++ - '0'); | |
780 | if (*cp++ != ' ') | |
781 | SCREWUP("size not delimited"); | |
782 | if (targisdir) { | |
783 | static char *namebuf; | |
784 | static int cursize; | |
785 | size_t need; | |
786 | ||
787 | need = strlen(targ) + strlen(cp) + 250; | |
788 | if (need > cursize) | |
789 | namebuf = xmalloc(need); | |
790 | (void) sprintf(namebuf, "%s%s%s", targ, | |
791 | *targ ? "/" : "", cp); | |
792 | np = namebuf; | |
793 | } else | |
794 | np = targ; | |
795 | curfile = cp; | |
796 | exists = stat(np, &stb) == 0; | |
797 | if (buf[0] == 'D') { | |
798 | int mod_flag = pflag; | |
799 | if (exists) { | |
800 | if (!S_ISDIR(stb.st_mode)) { | |
801 | errno = ENOTDIR; | |
802 | goto bad; | |
803 | } | |
804 | if (pflag) | |
805 | (void) chmod(np, mode); | |
806 | } else { | |
807 | /* Handle copying from a read-only | |
808 | directory */ | |
809 | mod_flag = 1; | |
810 | if (mkdir(np, mode | S_IRWXU) < 0) | |
811 | goto bad; | |
812 | } | |
813 | vect[0] = np; | |
814 | sink(1, vect); | |
815 | if (setimes) { | |
816 | setimes = 0; | |
817 | if (utime(np, &ut) < 0) | |
818 | run_err("%s: set times: %s", | |
819 | np, strerror(errno)); | |
820 | } | |
821 | if (mod_flag) | |
822 | (void) chmod(np, mode); | |
823 | continue; | |
824 | } | |
825 | omode = mode; | |
826 | mode |= S_IWRITE; | |
827 | if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) { | |
828 | bad: run_err("%s: %s", np, strerror(errno)); | |
829 | continue; | |
830 | } | |
831 | (void) atomicio(write, remout, "", 1); | |
832 | if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { | |
833 | (void) close(ofd); | |
834 | continue; | |
835 | } | |
836 | cp = bp->buf; | |
837 | wrerr = NO; | |
838 | ||
839 | if (showprogress) { | |
840 | totalbytes = size; | |
841 | progressmeter(-1); | |
842 | } | |
843 | statbytes = 0; | |
844 | for (count = i = 0; i < size; i += 4096) { | |
845 | amt = 4096; | |
846 | if (i + amt > size) | |
847 | amt = size - i; | |
848 | count += amt; | |
849 | do { | |
850 | j = atomicio(read, remin, cp, amt); | |
851 | if (j <= 0) { | |
852 | run_err("%s", j ? strerror(errno) : | |
853 | "dropped connection"); | |
854 | exit(1); | |
855 | } | |
856 | amt -= j; | |
857 | cp += j; | |
858 | statbytes += j; | |
859 | } while (amt > 0); | |
860 | if (count == bp->cnt) { | |
861 | /* Keep reading so we stay sync'd up. */ | |
862 | if (wrerr == NO) { | |
863 | j = atomicio(write, ofd, bp->buf, count); | |
864 | if (j != count) { | |
865 | wrerr = YES; | |
866 | wrerrno = j >= 0 ? EIO : errno; | |
867 | } | |
868 | } | |
869 | count = 0; | |
870 | cp = bp->buf; | |
871 | } | |
872 | } | |
873 | if (showprogress) | |
874 | progressmeter(1); | |
875 | if (count != 0 && wrerr == NO && | |
876 | (j = atomicio(write, ofd, bp->buf, count)) != count) { | |
877 | wrerr = YES; | |
878 | wrerrno = j >= 0 ? EIO : errno; | |
879 | } | |
880 | #if 0 | |
881 | if (ftruncate(ofd, size)) { | |
882 | run_err("%s: truncate: %s", np, strerror(errno)); | |
883 | wrerr = DISPLAYED; | |
884 | } | |
885 | #endif | |
886 | if (pflag) { | |
887 | if (exists || omode != mode) | |
888 | if (fchmod(ofd, omode)) | |
889 | run_err("%s: set mode: %s", | |
890 | np, strerror(errno)); | |
891 | } else { | |
892 | if (!exists && omode != mode) | |
893 | if (fchmod(ofd, omode & ~mask)) | |
894 | run_err("%s: set mode: %s", | |
895 | np, strerror(errno)); | |
896 | } | |
897 | if (close(ofd) == -1) { | |
898 | wrerr = YES; | |
899 | wrerrno = errno; | |
900 | } | |
901 | (void) response(); | |
902 | if (setimes && wrerr == NO) { | |
903 | setimes = 0; | |
904 | if (utime(np, &ut) < 0) { | |
905 | run_err("%s: set times: %s", | |
906 | np, strerror(errno)); | |
907 | wrerr = DISPLAYED; | |
908 | } | |
909 | } | |
910 | switch (wrerr) { | |
911 | case YES: | |
912 | run_err("%s: %s", np, strerror(wrerrno)); | |
913 | break; | |
914 | case NO: | |
915 | (void) atomicio(write, remout, "", 1); | |
916 | break; | |
917 | case DISPLAYED: | |
918 | break; | |
919 | } | |
920 | } | |
921 | screwup: | |
922 | run_err("protocol error: %s", why); | |
923 | exit(1); | |
924 | } | |
925 | ||
926 | int | |
927 | response() | |
928 | { | |
929 | char ch, *cp, resp, rbuf[2048]; | |
930 | ||
931 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
932 | lostconn(0); | |
933 | ||
934 | cp = rbuf; | |
935 | switch (resp) { | |
936 | case 0: /* ok */ | |
937 | return (0); | |
938 | default: | |
939 | *cp++ = resp; | |
940 | /* FALLTHROUGH */ | |
941 | case 1: /* error, followed by error msg */ | |
942 | case 2: /* fatal error, "" */ | |
943 | do { | |
944 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
945 | lostconn(0); | |
946 | *cp++ = ch; | |
947 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
948 | ||
949 | if (!iamremote) | |
950 | (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf); | |
951 | ++errs; | |
952 | if (resp == 1) | |
953 | return (-1); | |
954 | exit(1); | |
955 | } | |
956 | /* NOTREACHED */ | |
957 | } | |
958 | ||
959 | void | |
960 | usage() | |
961 | { | |
962 | (void) fprintf(stderr, "usage: scp " | |
963 | "[-pqrvC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2; or:\n" | |
964 | " scp [options] f1 ... fn directory\n"); | |
965 | exit(1); | |
966 | } | |
967 | ||
968 | void | |
969 | run_err(const char *fmt,...) | |
970 | { | |
971 | static FILE *fp; | |
972 | va_list ap; | |
973 | ||
974 | ++errs; | |
975 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
976 | return; | |
977 | (void) fprintf(fp, "%c", 0x01); | |
978 | (void) fprintf(fp, "scp: "); | |
979 | va_start(ap, fmt); | |
980 | (void) vfprintf(fp, fmt, ap); | |
981 | va_end(ap); | |
982 | (void) fprintf(fp, "\n"); | |
983 | (void) fflush(fp); | |
984 | ||
985 | if (!iamremote) { | |
986 | va_start(ap, fmt); | |
987 | vfprintf(stderr, fmt, ap); | |
988 | va_end(ap); | |
989 | fprintf(stderr, "\n"); | |
990 | } | |
991 | } | |
992 | ||
993 | char * | |
994 | colon(cp) | |
995 | char *cp; | |
996 | { | |
997 | int flag = 0; | |
998 | ||
999 | if (*cp == ':') /* Leading colon is part of file name. */ | |
1000 | return (0); | |
1001 | if (*cp == '[') | |
1002 | flag = 1; | |
1003 | ||
1004 | for (; *cp; ++cp) { | |
1005 | if (*cp == '@' && *(cp+1) == '[') | |
1006 | flag = 1; | |
1007 | if (*cp == ']' && *(cp+1) == ':' && flag) | |
1008 | return (cp+1); | |
1009 | if (*cp == ':' && !flag) | |
1010 | return (cp); | |
1011 | if (*cp == '/') | |
1012 | return (0); | |
1013 | } | |
1014 | return (0); | |
1015 | } | |
1016 | ||
1017 | void | |
1018 | verifydir(cp) | |
1019 | char *cp; | |
1020 | { | |
1021 | struct stat stb; | |
1022 | ||
1023 | if (!stat(cp, &stb)) { | |
1024 | if (S_ISDIR(stb.st_mode)) | |
1025 | return; | |
1026 | errno = ENOTDIR; | |
1027 | } | |
1028 | run_err("%s: %s", cp, strerror(errno)); | |
1029 | exit(1); | |
1030 | } | |
1031 | ||
1032 | int | |
1033 | okname(cp0) | |
1034 | char *cp0; | |
1035 | { | |
1036 | int c; | |
1037 | char *cp; | |
1038 | ||
1039 | cp = cp0; | |
1040 | do { | |
1041 | c = *cp; | |
1042 | if (c & 0200) | |
1043 | goto bad; | |
1044 | if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') | |
1045 | goto bad; | |
1046 | } while (*++cp); | |
1047 | return (1); | |
1048 | ||
1049 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1050 | return (0); | |
1051 | } | |
1052 | ||
1053 | BUF * | |
1054 | allocbuf(bp, fd, blksize) | |
1055 | BUF *bp; | |
1056 | int fd, blksize; | |
1057 | { | |
1058 | size_t size; | |
1059 | struct stat stb; | |
1060 | ||
1061 | if (fstat(fd, &stb) < 0) { | |
1062 | run_err("fstat: %s", strerror(errno)); | |
1063 | return (0); | |
1064 | } | |
1065 | if (stb.st_blksize == 0) | |
1066 | size = blksize; | |
1067 | else | |
1068 | size = blksize + (stb.st_blksize - blksize % stb.st_blksize) % | |
1069 | stb.st_blksize; | |
1070 | if (bp->cnt >= size) | |
1071 | return (bp); | |
1072 | if (bp->buf == NULL) | |
1073 | bp->buf = xmalloc(size); | |
1074 | else | |
1075 | bp->buf = xrealloc(bp->buf, size); | |
1076 | bp->cnt = size; | |
1077 | return (bp); | |
1078 | } | |
1079 | ||
1080 | void | |
1081 | lostconn(signo) | |
1082 | int signo; | |
1083 | { | |
1084 | if (!iamremote) | |
1085 | fprintf(stderr, "lost connection\n"); | |
1086 | exit(1); | |
1087 | } | |
1088 | ||
1089 | ||
1090 | void | |
1091 | alarmtimer(int wait) | |
1092 | { | |
1093 | struct itimerval itv; | |
1094 | ||
1095 | itv.it_value.tv_sec = wait; | |
1096 | itv.it_value.tv_usec = 0; | |
1097 | itv.it_interval = itv.it_value; | |
1098 | setitimer(ITIMER_REAL, &itv, NULL); | |
1099 | } | |
1100 | ||
1101 | void | |
1102 | updateprogressmeter(int ignore) | |
1103 | { | |
1104 | int save_errno = errno; | |
1105 | ||
1106 | progressmeter(0); | |
1107 | errno = save_errno; | |
1108 | } | |
1109 | ||
1110 | int | |
1111 | foregroundproc() | |
1112 | { | |
1113 | static pid_t pgrp = -1; | |
1114 | int ctty_pgrp; | |
1115 | ||
1116 | if (pgrp == -1) | |
1117 | pgrp = getpgrp(); | |
1118 | ||
1119 | return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 && | |
1120 | ctty_pgrp == pgrp)); | |
1121 | } | |
1122 | ||
1123 | void | |
1124 | progressmeter(int flag) | |
1125 | { | |
1126 | static const char prefixes[] = " KMGTP"; | |
1127 | static struct timeval lastupdate; | |
1128 | static off_t lastsize; | |
1129 | struct timeval now, td, wait; | |
1130 | off_t cursize, abbrevsize; | |
1131 | double elapsed; | |
1132 | int ratio, barlength, i, remaining; | |
1133 | char buf[256]; | |
1134 | ||
1135 | if (flag == -1) { | |
1136 | (void) gettimeofday(&start, (struct timezone *) 0); | |
1137 | lastupdate = start; | |
1138 | lastsize = 0; | |
1139 | } | |
1140 | if (foregroundproc() == 0) | |
1141 | return; | |
1142 | ||
1143 | (void) gettimeofday(&now, (struct timezone *) 0); | |
1144 | cursize = statbytes; | |
1145 | if (totalbytes != 0) { | |
1146 | ratio = 100.0 * cursize / totalbytes; | |
1147 | ratio = MAX(ratio, 0); | |
1148 | ratio = MIN(ratio, 100); | |
1149 | } else | |
1150 | ratio = 100; | |
1151 | ||
1152 | snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio); | |
1153 | ||
1154 | barlength = getttywidth() - 51; | |
1155 | barlength = (barlength <= MAX_BARLENGTH)?barlength:MAX_BARLENGTH; | |
1156 | if (barlength > 0) { | |
1157 | i = barlength * ratio / 100; | |
1158 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1159 | "|%.*s%*s|", i, BAR, barlength - i, ""); | |
1160 | } | |
1161 | i = 0; | |
1162 | abbrevsize = cursize; | |
1163 | while (abbrevsize >= 100000 && i < sizeof(prefixes)) { | |
1164 | i++; | |
1165 | abbrevsize >>= 10; | |
1166 | } | |
1167 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5d %c%c ", | |
1168 | (int) abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' : | |
1169 | 'B'); | |
1170 | ||
1171 | timersub(&now, &lastupdate, &wait); | |
1172 | if (cursize > lastsize) { | |
1173 | lastupdate = now; | |
1174 | lastsize = cursize; | |
1175 | if (wait.tv_sec >= STALLTIME) { | |
1176 | start.tv_sec += wait.tv_sec; | |
1177 | start.tv_usec += wait.tv_usec; | |
1178 | } | |
1179 | wait.tv_sec = 0; | |
1180 | } | |
1181 | timersub(&now, &start, &td); | |
1182 | elapsed = td.tv_sec + (td.tv_usec / 1000000.0); | |
1183 | ||
1184 | if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) { | |
1185 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1186 | " --:-- ETA"); | |
1187 | } else if (wait.tv_sec >= STALLTIME) { | |
1188 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1189 | " - stalled -"); | |
1190 | } else { | |
1191 | if (flag != 1) | |
1192 | remaining = | |
1193 | (int)(totalbytes / (statbytes / elapsed) - elapsed); | |
1194 | else | |
1195 | remaining = elapsed; | |
1196 | ||
1197 | i = remaining / 3600; | |
1198 | if (i) | |
1199 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1200 | "%2d:", i); | |
1201 | else | |
1202 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1203 | " "); | |
1204 | i = remaining % 3600; | |
1205 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1206 | "%02d:%02d%s", i / 60, i % 60, | |
1207 | (flag != 1) ? " ETA" : " "); | |
1208 | } | |
1209 | atomicio(write, fileno(stdout), buf, strlen(buf)); | |
1210 | ||
1211 | if (flag == -1) { | |
1212 | struct sigaction sa; | |
1213 | sa.sa_handler = updateprogressmeter; | |
1214 | sigemptyset(&sa.sa_mask); | |
1215 | #ifdef SA_RESTART | |
1216 | sa.sa_flags = SA_RESTART; | |
1217 | #endif | |
1218 | sigaction(SIGALRM, &sa, NULL); | |
1219 | alarmtimer(1); | |
1220 | } else if (flag == 1) { | |
1221 | alarmtimer(0); | |
1222 | atomicio(write, fileno(stdout), "\n", 1); | |
1223 | statbytes = 0; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | int | |
1228 | getttywidth(void) | |
1229 | { | |
1230 | struct winsize winsize; | |
1231 | ||
1232 | if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1) | |
1233 | return (winsize.ws_col ? winsize.ws_col : 80); | |
1234 | else | |
1235 | return (80); | |
1236 | } |