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Commit | Line | Data |
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8efc0c15 | 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 | * Copyright (c) 1983, 1990, 1992, 1993, 1995 | |
15 | * The Regents of the University of California. All rights reserved. | |
16 | * | |
17 | * Redistribution and use in source and binary forms, with or without | |
18 | * modification, are permitted provided that the following conditions | |
19 | * are met: | |
20 | * 1. Redistributions of source code must retain the above copyright | |
21 | * notice, this list of conditions and the following disclaimer. | |
22 | * 2. Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in the | |
24 | * documentation and/or other materials provided with the distribution. | |
25 | * 3. All advertising materials mentioning features or use of this software | |
26 | * must display the following acknowledgement: | |
27 | * This product includes software developed by the University of | |
28 | * California, Berkeley and its contributors. | |
29 | * 4. Neither the name of the University nor the names of its contributors | |
30 | * may be used to endorse or promote products derived from this software | |
31 | * without specific prior written permission. | |
32 | * | |
33 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
34 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
35 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
36 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
37 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
38 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
39 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
40 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
41 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
42 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
43 | * SUCH DAMAGE. | |
44 | * | |
45 | * $Id$ | |
46 | */ | |
47 | ||
48 | #include "includes.h" | |
49 | RCSID("$Id$"); | |
50 | ||
51 | #include "ssh.h" | |
52 | #include "xmalloc.h" | |
53 | #include <utime.h> | |
54 | ||
55 | #define _PATH_CP "cp" | |
56 | ||
57 | /* For progressmeter() -- number of seconds before xfer considered "stalled" */ | |
58 | #define STALLTIME 5 | |
59 | ||
60 | /* Visual statistics about files as they are transferred. */ | |
61 | void progressmeter(int); | |
62 | ||
63 | /* Returns width of the terminal (for progress meter calculations). */ | |
64 | int getttywidth(void); | |
65 | ||
66 | /* Time a transfer started. */ | |
67 | static struct timeval start; | |
68 | ||
69 | /* Number of bytes of current file transferred so far. */ | |
70 | volatile unsigned long statbytes; | |
71 | ||
72 | /* Total size of current file. */ | |
73 | unsigned long totalbytes = 0; | |
74 | ||
75 | /* Name of current file being transferred. */ | |
76 | char *curfile; | |
77 | ||
78 | /* This is set to non-zero to enable verbose mode. */ | |
79 | int verbose = 0; | |
80 | ||
81 | /* This is set to non-zero if compression is desired. */ | |
82 | int compress = 0; | |
83 | ||
84 | /* This is set to zero if the progressmeter is not desired. */ | |
85 | int showprogress = 1; | |
86 | ||
87 | /* This is set to non-zero if running in batch mode (that is, password | |
88 | and passphrase queries are not allowed). */ | |
89 | int batchmode = 0; | |
90 | ||
91 | /* This is set to the cipher type string if given on the command line. */ | |
92 | char *cipher = NULL; | |
93 | ||
94 | /* This is set to the RSA authentication identity file name if given on | |
95 | the command line. */ | |
96 | char *identity = NULL; | |
97 | ||
98 | /* This is the port to use in contacting the remote site (is non-NULL). */ | |
99 | char *port = NULL; | |
100 | ||
101 | /* This function executes the given command as the specified user on the given | |
102 | host. This returns < 0 if execution fails, and >= 0 otherwise. | |
103 | This assigns the input and output file descriptors on success. */ | |
104 | ||
105 | int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout) | |
106 | { | |
107 | int pin[2], pout[2], reserved[2]; | |
108 | ||
109 | if (verbose) | |
110 | fprintf(stderr, "Executing: host %s, user %s, command %s\n", | |
111 | host, remuser ? remuser : "(unspecified)", cmd); | |
112 | ||
113 | /* Reserve two descriptors so that the real pipes won't get descriptors | |
114 | 0 and 1 because that will screw up dup2 below. */ | |
115 | pipe(reserved); | |
116 | ||
117 | /* Create a socket pair for communicating with ssh. */ | |
118 | if (pipe(pin) < 0) | |
119 | fatal("pipe: %s", strerror(errno)); | |
120 | if (pipe(pout) < 0) | |
121 | fatal("pipe: %s", strerror(errno)); | |
122 | ||
123 | /* Free the reserved descriptors. */ | |
124 | close(reserved[0]); | |
125 | close(reserved[1]); | |
126 | ||
127 | /* For a child to execute the command on the remote host using ssh. */ | |
128 | if (fork() == 0) | |
129 | { | |
130 | char *args[100]; | |
131 | unsigned int i; | |
132 | ||
133 | /* Child. */ | |
134 | close(pin[1]); | |
135 | close(pout[0]); | |
136 | dup2(pin[0], 0); | |
137 | dup2(pout[1], 1); | |
138 | close(pin[0]); | |
139 | close(pout[1]); | |
140 | ||
141 | i = 0; | |
142 | args[i++] = SSH_PROGRAM; | |
143 | args[i++] = "-x"; | |
144 | args[i++] = "-oFallBackToRsh no"; | |
145 | if (verbose) | |
146 | args[i++] = "-v"; | |
147 | if (compress) | |
148 | args[i++] = "-C"; | |
149 | if (batchmode) | |
150 | args[i++] = "-oBatchMode yes"; | |
151 | if (cipher != NULL) | |
152 | { | |
153 | args[i++] = "-c"; | |
154 | args[i++] = cipher; | |
155 | } | |
156 | if (identity != NULL) | |
157 | { | |
158 | args[i++] = "-i"; | |
159 | args[i++] = identity; | |
160 | } | |
161 | if (port != NULL) | |
162 | { | |
163 | args[i++] = "-p"; | |
164 | args[i++] = port; | |
165 | } | |
166 | if (remuser != NULL) | |
167 | { | |
168 | args[i++] = "-l"; | |
169 | args[i++] = remuser; | |
170 | } | |
171 | args[i++] = host; | |
172 | args[i++] = cmd; | |
173 | args[i++] = NULL; | |
174 | ||
175 | execvp(SSH_PROGRAM, args); | |
176 | perror(SSH_PROGRAM); | |
177 | exit(1); | |
178 | } | |
179 | /* Parent. Close the other side, and return the local side. */ | |
180 | close(pin[0]); | |
181 | *fdout = pin[1]; | |
182 | close(pout[1]); | |
183 | *fdin = pout[0]; | |
184 | return 0; | |
185 | } | |
186 | ||
187 | void fatal(const char *fmt, ...) | |
188 | { | |
189 | va_list ap; | |
190 | char buf[1024]; | |
191 | ||
192 | va_start(ap, fmt); | |
193 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
194 | va_end(ap); | |
195 | fprintf(stderr, "%s\n", buf); | |
196 | exit(255); | |
197 | } | |
198 | ||
199 | /* This stuff used to be in BSD rcp extern.h. */ | |
200 | ||
201 | typedef struct { | |
202 | int cnt; | |
203 | char *buf; | |
204 | } BUF; | |
205 | ||
206 | extern int iamremote; | |
207 | ||
208 | BUF *allocbuf(BUF *, int, int); | |
209 | char *colon(char *); | |
210 | void lostconn(int); | |
211 | void nospace(void); | |
212 | int okname(char *); | |
213 | void run_err(const char *, ...); | |
214 | void verifydir(char *); | |
215 | ||
216 | /* Stuff from BSD rcp.c continues. */ | |
217 | ||
218 | struct passwd *pwd; | |
219 | uid_t userid; | |
220 | int errs, remin, remout; | |
221 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
222 | ||
223 | #define CMDNEEDS 64 | |
224 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
225 | ||
226 | int response(void); | |
227 | void rsource(char *, struct stat *); | |
228 | void sink(int, char *[]); | |
229 | void source(int, char *[]); | |
230 | void tolocal(int, char *[]); | |
231 | void toremote(char *, int, char *[]); | |
232 | void usage(void); | |
233 | ||
234 | int | |
235 | main(argc, argv) | |
236 | int argc; | |
237 | char *argv[]; | |
238 | { | |
239 | int ch, fflag, tflag; | |
240 | char *targ; | |
241 | extern char *optarg; | |
242 | extern int optind; | |
243 | ||
244 | fflag = tflag = 0; | |
245 | while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q")) != EOF) | |
246 | switch(ch) { /* User-visible flags. */ | |
247 | case 'p': | |
248 | pflag = 1; | |
249 | break; | |
250 | case 'P': | |
251 | port = optarg; | |
252 | break; | |
253 | case 'r': | |
254 | iamrecursive = 1; | |
255 | break; | |
256 | /* Server options. */ | |
257 | case 'd': | |
258 | targetshouldbedirectory = 1; | |
259 | break; | |
260 | case 'f': /* "from" */ | |
261 | iamremote = 1; | |
262 | fflag = 1; | |
263 | break; | |
264 | case 't': /* "to" */ | |
265 | iamremote = 1; | |
266 | tflag = 1; | |
267 | break; | |
268 | case 'c': | |
269 | cipher = optarg; | |
270 | break; | |
271 | case 'i': | |
272 | identity = optarg; | |
273 | break; | |
274 | case 'v': | |
275 | verbose = 1; | |
276 | break; | |
277 | case 'B': | |
278 | batchmode = 1; | |
279 | break; | |
280 | case 'C': | |
281 | compress = 1; | |
282 | break; | |
283 | case 'q': | |
284 | showprogress = 0; | |
285 | break; | |
286 | case '?': | |
287 | default: | |
288 | usage(); | |
289 | } | |
290 | argc -= optind; | |
291 | argv += optind; | |
292 | ||
293 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
294 | fatal("unknown user %d", (int)userid); | |
295 | ||
296 | if (! isatty(STDERR_FILENO)) | |
297 | showprogress = 0; | |
298 | ||
299 | remin = STDIN_FILENO; | |
300 | remout = STDOUT_FILENO; | |
301 | ||
302 | if (fflag) { /* Follow "protocol", send data. */ | |
303 | (void)response(); | |
304 | source(argc, argv); | |
305 | exit(errs != 0); | |
306 | } | |
307 | ||
308 | if (tflag) { /* Receive data. */ | |
309 | sink(argc, argv); | |
310 | exit(errs != 0); | |
311 | } | |
312 | ||
313 | if (argc < 2) | |
314 | usage(); | |
315 | if (argc > 2) | |
316 | targetshouldbedirectory = 1; | |
317 | ||
318 | remin = remout = -1; | |
319 | /* Command to be executed on remote system using "ssh". */ | |
320 | (void)sprintf(cmd, "scp%s%s%s%s", verbose ? " -v" : "", | |
321 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
322 | targetshouldbedirectory ? " -d" : ""); | |
323 | ||
324 | (void)signal(SIGPIPE, lostconn); | |
325 | ||
326 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
327 | toremote(targ, argc, argv); | |
328 | else { | |
329 | tolocal(argc, argv); /* Dest is local host. */ | |
330 | if (targetshouldbedirectory) | |
331 | verifydir(argv[argc - 1]); | |
332 | } | |
333 | exit(errs != 0); | |
334 | } | |
335 | ||
336 | void | |
337 | toremote(targ, argc, argv) | |
338 | char *targ, *argv[]; | |
339 | int argc; | |
340 | { | |
341 | int i, len; | |
342 | char *bp, *host, *src, *suser, *thost, *tuser; | |
343 | ||
344 | *targ++ = 0; | |
345 | if (*targ == 0) | |
346 | targ = "."; | |
347 | ||
348 | if ((thost = strchr(argv[argc - 1], '@'))) { | |
349 | /* user@host */ | |
350 | *thost++ = 0; | |
351 | tuser = argv[argc - 1]; | |
352 | if (*tuser == '\0') | |
353 | tuser = NULL; | |
354 | else if (!okname(tuser)) | |
355 | exit(1); | |
356 | } else { | |
357 | thost = argv[argc - 1]; | |
358 | tuser = NULL; | |
359 | } | |
360 | ||
361 | for (i = 0; i < argc - 1; i++) { | |
362 | src = colon(argv[i]); | |
363 | if (src) { /* remote to remote */ | |
364 | *src++ = 0; | |
365 | if (*src == 0) | |
366 | src = "."; | |
367 | host = strchr(argv[i], '@'); | |
368 | len = strlen(SSH_PROGRAM) + strlen(argv[i]) + | |
369 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
370 | strlen(thost) + strlen(targ) + CMDNEEDS + 32; | |
371 | bp = xmalloc(len); | |
372 | if (host) { | |
373 | *host++ = 0; | |
374 | suser = argv[i]; | |
375 | if (*suser == '\0') | |
376 | suser = pwd->pw_name; | |
377 | else if (!okname(suser)) | |
378 | continue; | |
379 | (void)sprintf(bp, | |
380 | "%s%s -x -o'FallBackToRsh no' -n -l %s %s %s %s '%s%s%s:%s'", | |
381 | SSH_PROGRAM, verbose ? " -v" : "", | |
382 | suser, host, cmd, src, | |
383 | tuser ? tuser : "", tuser ? "@" : "", | |
384 | thost, targ); | |
385 | } else | |
386 | (void)sprintf(bp, | |
387 | "exec %s%s -x -o'FallBackToRsh no' -n %s %s %s '%s%s%s:%s'", | |
388 | SSH_PROGRAM, verbose ? " -v" : "", | |
389 | argv[i], cmd, src, | |
390 | tuser ? tuser : "", tuser ? "@" : "", | |
391 | thost, targ); | |
392 | if (verbose) | |
393 | fprintf(stderr, "Executing: %s\n", bp); | |
394 | (void)system(bp); | |
395 | (void)xfree(bp); | |
396 | } else { /* local to remote */ | |
397 | if (remin == -1) { | |
398 | len = strlen(targ) + CMDNEEDS + 20; | |
399 | bp = xmalloc(len); | |
400 | (void)sprintf(bp, "%s -t %s", cmd, targ); | |
401 | host = thost; | |
402 | if (do_cmd(host, tuser, | |
403 | bp, &remin, &remout) < 0) | |
404 | exit(1); | |
405 | if (response() < 0) | |
406 | exit(1); | |
407 | (void)xfree(bp); | |
408 | } | |
409 | source(1, argv+i); | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | void | |
415 | tolocal(argc, argv) | |
416 | int argc; | |
417 | char *argv[]; | |
418 | { | |
419 | int i, len; | |
420 | char *bp, *host, *src, *suser; | |
421 | ||
422 | for (i = 0; i < argc - 1; i++) { | |
423 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
424 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
425 | strlen(argv[argc - 1]) + 20; | |
426 | bp = xmalloc(len); | |
427 | (void)sprintf(bp, "exec %s%s%s %s %s", _PATH_CP, | |
428 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
429 | argv[i], argv[argc - 1]); | |
430 | if (verbose) | |
431 | fprintf(stderr, "Executing: %s\n", bp); | |
432 | if (system(bp)) | |
433 | ++errs; | |
434 | (void)xfree(bp); | |
435 | continue; | |
436 | } | |
437 | *src++ = 0; | |
438 | if (*src == 0) | |
439 | src = "."; | |
440 | if ((host = strchr(argv[i], '@')) == NULL) { | |
441 | host = argv[i]; | |
442 | suser = NULL; | |
443 | } else { | |
444 | *host++ = 0; | |
445 | suser = argv[i]; | |
446 | if (*suser == '\0') | |
447 | suser = pwd->pw_name; | |
448 | else if (!okname(suser)) | |
449 | continue; | |
450 | } | |
451 | len = strlen(src) + CMDNEEDS + 20; | |
452 | bp = xmalloc(len); | |
453 | (void)sprintf(bp, "%s -f %s", cmd, src); | |
454 | if (do_cmd(host, suser, bp, &remin, &remout) < 0) { | |
455 | (void)xfree(bp); | |
456 | ++errs; | |
457 | continue; | |
458 | } | |
459 | xfree(bp); | |
460 | sink(1, argv + argc - 1); | |
461 | (void)close(remin); | |
462 | remin = remout = -1; | |
463 | } | |
464 | } | |
465 | ||
466 | void | |
467 | source(argc, argv) | |
468 | int argc; | |
469 | char *argv[]; | |
470 | { | |
471 | struct stat stb; | |
472 | static BUF buffer; | |
473 | BUF *bp; | |
474 | off_t i; | |
475 | int amt, fd, haderr, indx, result; | |
476 | char *last, *name, buf[2048]; | |
477 | ||
478 | for (indx = 0; indx < argc; ++indx) { | |
479 | name = argv[indx]; | |
480 | statbytes = 0; | |
481 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
482 | goto syserr; | |
483 | if (fstat(fd, &stb) < 0) { | |
484 | syserr: run_err("%s: %s", name, strerror(errno)); | |
485 | goto next; | |
486 | } | |
487 | switch (stb.st_mode & S_IFMT) { | |
488 | case S_IFREG: | |
489 | break; | |
490 | case S_IFDIR: | |
491 | if (iamrecursive) { | |
492 | rsource(name, &stb); | |
493 | goto next; | |
494 | } | |
495 | /* FALLTHROUGH */ | |
496 | default: | |
497 | run_err("%s: not a regular file", name); | |
498 | goto next; | |
499 | } | |
500 | if ((last = strrchr(name, '/')) == NULL) | |
501 | last = name; | |
502 | else | |
503 | ++last; | |
504 | curfile = last; | |
505 | if (pflag) { | |
506 | /* | |
507 | * Make it compatible with possible future | |
508 | * versions expecting microseconds. | |
509 | */ | |
510 | (void)sprintf(buf, "T%lu 0 %lu 0\n", | |
511 | (unsigned long)stb.st_mtime, | |
512 | (unsigned long)stb.st_atime); | |
513 | (void)write(remout, buf, strlen(buf)); | |
514 | if (response() < 0) | |
515 | goto next; | |
516 | } | |
517 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
518 | (void)sprintf(buf, "C%04o %lu %s\n", | |
519 | (unsigned int)(stb.st_mode & FILEMODEMASK), | |
520 | (unsigned long)stb.st_size, | |
521 | last); | |
522 | if (verbose) | |
523 | { | |
524 | fprintf(stderr, "Sending file modes: %s", buf); | |
525 | fflush(stderr); | |
526 | } | |
527 | (void)write(remout, buf, strlen(buf)); | |
528 | if (response() < 0) | |
529 | goto next; | |
530 | if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { | |
531 | next: (void)close(fd); | |
532 | continue; | |
533 | } | |
534 | ||
535 | if (showprogress) { | |
536 | totalbytes = stb.st_size; | |
537 | progressmeter(-1); | |
538 | } | |
539 | ||
540 | /* Keep writing after an error so that we stay sync'd up. */ | |
541 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
542 | amt = bp->cnt; | |
543 | if (i + amt > stb.st_size) | |
544 | amt = stb.st_size - i; | |
545 | if (!haderr) { | |
546 | result = read(fd, bp->buf, amt); | |
547 | if (result != amt) | |
548 | haderr = result >= 0 ? EIO : errno; | |
549 | } | |
550 | if (haderr) | |
551 | (void)write(remout, bp->buf, amt); | |
552 | else { | |
553 | result = write(remout, bp->buf, amt); | |
554 | if (result != amt) | |
555 | haderr = result >= 0 ? EIO : errno; | |
556 | statbytes += result; | |
557 | } | |
558 | } | |
559 | if(showprogress) | |
560 | progressmeter(1); | |
561 | ||
562 | if (close(fd) < 0 && !haderr) | |
563 | haderr = errno; | |
564 | if (!haderr) | |
565 | (void)write(remout, "", 1); | |
566 | else | |
567 | run_err("%s: %s", name, strerror(haderr)); | |
568 | (void)response(); | |
569 | } | |
570 | } | |
571 | ||
572 | void | |
573 | rsource(name, statp) | |
574 | char *name; | |
575 | struct stat *statp; | |
576 | { | |
577 | DIR *dirp; | |
578 | struct dirent *dp; | |
579 | char *last, *vect[1], path[1100]; | |
580 | ||
581 | if (!(dirp = opendir(name))) { | |
582 | run_err("%s: %s", name, strerror(errno)); | |
583 | return; | |
584 | } | |
585 | last = strrchr(name, '/'); | |
586 | if (last == 0) | |
587 | last = name; | |
588 | else | |
589 | last++; | |
590 | if (pflag) { | |
591 | (void)sprintf(path, "T%lu 0 %lu 0\n", | |
592 | (unsigned long)statp->st_mtime, | |
593 | (unsigned long)statp->st_atime); | |
594 | (void)write(remout, path, strlen(path)); | |
595 | if (response() < 0) { | |
596 | closedir(dirp); | |
597 | return; | |
598 | } | |
599 | } | |
600 | (void)sprintf(path, | |
601 | "D%04o %d %.1024s\n", (unsigned int)(statp->st_mode & FILEMODEMASK), | |
602 | 0, last); | |
603 | if (verbose) | |
604 | fprintf(stderr, "Entering directory: %s", path); | |
605 | (void)write(remout, path, strlen(path)); | |
606 | if (response() < 0) { | |
607 | closedir(dirp); | |
608 | return; | |
609 | } | |
610 | while ((dp = readdir(dirp))) { | |
611 | if (dp->d_ino == 0) | |
612 | continue; | |
613 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
614 | continue; | |
615 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
616 | run_err("%s/%s: name too long", name, dp->d_name); | |
617 | continue; | |
618 | } | |
619 | (void)sprintf(path, "%s/%s", name, dp->d_name); | |
620 | vect[0] = path; | |
621 | source(1, vect); | |
622 | } | |
623 | (void)closedir(dirp); | |
624 | (void)write(remout, "E\n", 2); | |
625 | (void)response(); | |
626 | } | |
627 | ||
628 | void | |
629 | sink(argc, argv) | |
630 | int argc; | |
631 | char *argv[]; | |
632 | { | |
633 | static BUF buffer; | |
634 | struct stat stb; | |
635 | enum { YES, NO, DISPLAYED } wrerr; | |
636 | BUF *bp; | |
637 | off_t i, j; | |
638 | int amt, count, exists, first, mask, mode, ofd, omode; | |
639 | int setimes, size, targisdir, wrerrno = 0; | |
640 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
641 | struct utimbuf ut; | |
642 | int dummy_usec; | |
643 | ||
644 | #define SCREWUP(str) { why = str; goto screwup; } | |
645 | ||
646 | setimes = targisdir = 0; | |
647 | mask = umask(0); | |
648 | if (!pflag) | |
649 | (void)umask(mask); | |
650 | if (argc != 1) { | |
651 | run_err("ambiguous target"); | |
652 | exit(1); | |
653 | } | |
654 | targ = *argv; | |
655 | if (targetshouldbedirectory) | |
656 | verifydir(targ); | |
657 | ||
658 | (void)write(remout, "", 1); | |
659 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) | |
660 | targisdir = 1; | |
661 | for (first = 1;; first = 0) { | |
662 | cp = buf; | |
663 | if (read(remin, cp, 1) <= 0) | |
664 | return; | |
665 | if (*cp++ == '\n') | |
666 | SCREWUP("unexpected <newline>"); | |
667 | do { | |
668 | if (read(remin, &ch, sizeof(ch)) != sizeof(ch)) | |
669 | SCREWUP("lost connection"); | |
670 | *cp++ = ch; | |
671 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
672 | *cp = 0; | |
673 | ||
674 | if (buf[0] == '\01' || buf[0] == '\02') { | |
675 | if (iamremote == 0) | |
676 | (void)write(STDERR_FILENO, | |
677 | buf + 1, strlen(buf + 1)); | |
678 | if (buf[0] == '\02') | |
679 | exit(1); | |
680 | ++errs; | |
681 | continue; | |
682 | } | |
683 | if (buf[0] == 'E') { | |
684 | (void)write(remout, "", 1); | |
685 | return; | |
686 | } | |
687 | ||
688 | if (ch == '\n') | |
689 | *--cp = 0; | |
690 | ||
691 | #define getnum(t) (t) = 0; \ | |
692 | while (*cp >= '0' && *cp <= '9') (t) = (t) * 10 + (*cp++ - '0'); | |
693 | cp = buf; | |
694 | if (*cp == 'T') { | |
695 | setimes++; | |
696 | cp++; | |
697 | getnum(ut.modtime); | |
698 | if (*cp++ != ' ') | |
699 | SCREWUP("mtime.sec not delimited"); | |
700 | getnum(dummy_usec); | |
701 | if (*cp++ != ' ') | |
702 | SCREWUP("mtime.usec not delimited"); | |
703 | getnum(ut.actime); | |
704 | if (*cp++ != ' ') | |
705 | SCREWUP("atime.sec not delimited"); | |
706 | getnum(dummy_usec); | |
707 | if (*cp++ != '\0') | |
708 | SCREWUP("atime.usec not delimited"); | |
709 | (void)write(remout, "", 1); | |
710 | continue; | |
711 | } | |
712 | if (*cp != 'C' && *cp != 'D') { | |
713 | /* | |
714 | * Check for the case "rcp remote:foo\* local:bar". | |
715 | * In this case, the line "No match." can be returned | |
716 | * by the shell before the rcp command on the remote is | |
717 | * executed so the ^Aerror_message convention isn't | |
718 | * followed. | |
719 | */ | |
720 | if (first) { | |
721 | run_err("%s", cp); | |
722 | exit(1); | |
723 | } | |
724 | SCREWUP("expected control record"); | |
725 | } | |
726 | mode = 0; | |
727 | for (++cp; cp < buf + 5; cp++) { | |
728 | if (*cp < '0' || *cp > '7') | |
729 | SCREWUP("bad mode"); | |
730 | mode = (mode << 3) | (*cp - '0'); | |
731 | } | |
732 | if (*cp++ != ' ') | |
733 | SCREWUP("mode not delimited"); | |
734 | ||
735 | for (size = 0; *cp >= '0' && *cp <= '9';) | |
736 | size = size * 10 + (*cp++ - '0'); | |
737 | if (*cp++ != ' ') | |
738 | SCREWUP("size not delimited"); | |
739 | if (targisdir) { | |
740 | static char *namebuf; | |
741 | static int cursize; | |
742 | size_t need; | |
743 | ||
744 | need = strlen(targ) + strlen(cp) + 250; | |
745 | if (need > cursize) | |
746 | namebuf = xmalloc(need); | |
747 | (void)sprintf(namebuf, "%s%s%s", targ, | |
748 | *targ ? "/" : "", cp); | |
749 | np = namebuf; | |
750 | } else | |
751 | np = targ; | |
752 | curfile = cp; | |
753 | exists = stat(np, &stb) == 0; | |
754 | if (buf[0] == 'D') { | |
755 | int mod_flag = pflag; | |
756 | if (exists) { | |
757 | if (!S_ISDIR(stb.st_mode)) { | |
758 | errno = ENOTDIR; | |
759 | goto bad; | |
760 | } | |
761 | if (pflag) | |
762 | (void)chmod(np, mode); | |
763 | } else { | |
764 | /* Handle copying from a read-only directory */ | |
765 | mod_flag = 1; | |
766 | if (mkdir(np, mode | S_IRWXU) < 0) | |
767 | goto bad; | |
768 | } | |
769 | vect[0] = np; | |
770 | sink(1, vect); | |
771 | if (setimes) { | |
772 | setimes = 0; | |
773 | if (utime(np, &ut) < 0) | |
774 | run_err("%s: set times: %s", | |
775 | np, strerror(errno)); | |
776 | } | |
777 | if (mod_flag) | |
778 | (void)chmod(np, mode); | |
779 | continue; | |
780 | } | |
781 | omode = mode; | |
782 | mode |= S_IWRITE; | |
783 | if ((ofd = open(np, O_WRONLY|O_CREAT|O_TRUNC, mode)) < 0) { | |
784 | bad: run_err("%s: %s", np, strerror(errno)); | |
785 | continue; | |
786 | } | |
787 | (void)write(remout, "", 1); | |
788 | if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { | |
789 | (void)close(ofd); | |
790 | continue; | |
791 | } | |
792 | cp = bp->buf; | |
793 | wrerr = NO; | |
794 | ||
795 | if (showprogress) { | |
796 | totalbytes = size; | |
797 | progressmeter(-1); | |
798 | } | |
799 | statbytes = 0; | |
800 | for (count = i = 0; i < size; i += 4096) { | |
801 | amt = 4096; | |
802 | if (i + amt > size) | |
803 | amt = size - i; | |
804 | count += amt; | |
805 | do { | |
806 | j = read(remin, cp, amt); | |
807 | if (j <= 0) { | |
808 | run_err("%s", j ? strerror(errno) : | |
809 | "dropped connection"); | |
810 | exit(1); | |
811 | } | |
812 | amt -= j; | |
813 | cp += j; | |
814 | statbytes += j; | |
815 | } while (amt > 0); | |
816 | if (count == bp->cnt) { | |
817 | /* Keep reading so we stay sync'd up. */ | |
818 | if (wrerr == NO) { | |
819 | j = write(ofd, bp->buf, count); | |
820 | if (j != count) { | |
821 | wrerr = YES; | |
822 | wrerrno = j >= 0 ? EIO : errno; | |
823 | } | |
824 | } | |
825 | count = 0; | |
826 | cp = bp->buf; | |
827 | } | |
828 | } | |
829 | if (showprogress) | |
830 | progressmeter(1); | |
831 | if (count != 0 && wrerr == NO && | |
832 | (j = write(ofd, bp->buf, count)) != count) { | |
833 | wrerr = YES; | |
834 | wrerrno = j >= 0 ? EIO : errno; | |
835 | } | |
836 | #if 0 | |
837 | if (ftruncate(ofd, size)) { | |
838 | run_err("%s: truncate: %s", np, strerror(errno)); | |
839 | wrerr = DISPLAYED; | |
840 | } | |
841 | #endif | |
842 | if (pflag) { | |
843 | if (exists || omode != mode) | |
844 | if (fchmod(ofd, omode)) | |
845 | run_err("%s: set mode: %s", | |
846 | np, strerror(errno)); | |
847 | } else { | |
848 | if (!exists && omode != mode) | |
849 | if (fchmod(ofd, omode & ~mask)) | |
850 | run_err("%s: set mode: %s", | |
851 | np, strerror(errno)); | |
852 | } | |
853 | (void)close(ofd); | |
854 | (void)response(); | |
855 | if (setimes && wrerr == NO) { | |
856 | setimes = 0; | |
857 | if (utime(np, &ut) < 0) { | |
858 | run_err("%s: set times: %s", | |
859 | np, strerror(errno)); | |
860 | wrerr = DISPLAYED; | |
861 | } | |
862 | } | |
863 | switch(wrerr) { | |
864 | case YES: | |
865 | run_err("%s: %s", np, strerror(wrerrno)); | |
866 | break; | |
867 | case NO: | |
868 | (void)write(remout, "", 1); | |
869 | break; | |
870 | case DISPLAYED: | |
871 | break; | |
872 | } | |
873 | } | |
874 | screwup: | |
875 | run_err("protocol error: %s", why); | |
876 | exit(1); | |
877 | } | |
878 | ||
879 | int | |
880 | response() | |
881 | { | |
882 | char ch, *cp, resp, rbuf[2048]; | |
883 | ||
884 | if (read(remin, &resp, sizeof(resp)) != sizeof(resp)) | |
885 | lostconn(0); | |
886 | ||
887 | cp = rbuf; | |
888 | switch(resp) { | |
889 | case 0: /* ok */ | |
890 | return (0); | |
891 | default: | |
892 | *cp++ = resp; | |
893 | /* FALLTHROUGH */ | |
894 | case 1: /* error, followed by error msg */ | |
895 | case 2: /* fatal error, "" */ | |
896 | do { | |
897 | if (read(remin, &ch, sizeof(ch)) != sizeof(ch)) | |
898 | lostconn(0); | |
899 | *cp++ = ch; | |
900 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
901 | ||
902 | if (!iamremote) | |
903 | (void)write(STDERR_FILENO, rbuf, cp - rbuf); | |
904 | ++errs; | |
905 | if (resp == 1) | |
906 | return (-1); | |
907 | exit(1); | |
908 | } | |
909 | /* NOTREACHED */ | |
910 | } | |
911 | ||
912 | void | |
913 | usage() | |
914 | { | |
915 | (void)fprintf(stderr, | |
916 | "usage: scp [-pqrvC] [-P port] [-c cipher] [-i identity] f1 f2; or:\n scp [options] f1 ... fn directory\n"); | |
917 | exit(1); | |
918 | } | |
919 | ||
920 | void | |
921 | run_err(const char *fmt, ...) | |
922 | { | |
923 | static FILE *fp; | |
924 | va_list ap; | |
925 | va_start(ap, fmt); | |
926 | ||
927 | ++errs; | |
928 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
929 | return; | |
930 | (void)fprintf(fp, "%c", 0x01); | |
931 | (void)fprintf(fp, "scp: "); | |
932 | (void)vfprintf(fp, fmt, ap); | |
933 | (void)fprintf(fp, "\n"); | |
934 | (void)fflush(fp); | |
935 | ||
936 | if (!iamremote) | |
937 | { | |
938 | vfprintf(stderr, fmt, ap); | |
939 | fprintf(stderr, "\n"); | |
940 | } | |
941 | ||
942 | va_end(ap); | |
943 | } | |
944 | ||
945 | /* Stuff below is from BSD rcp util.c. */ | |
946 | ||
947 | /*- | |
948 | * Copyright (c) 1992, 1993 | |
949 | * The Regents of the University of California. All rights reserved. | |
950 | * | |
951 | * Redistribution and use in source and binary forms, with or without | |
952 | * modification, are permitted provided that the following conditions | |
953 | * are met: | |
954 | * 1. Redistributions of source code must retain the above copyright | |
955 | * notice, this list of conditions and the following disclaimer. | |
956 | * 2. Redistributions in binary form must reproduce the above copyright | |
957 | * notice, this list of conditions and the following disclaimer in the | |
958 | * documentation and/or other materials provided with the distribution. | |
959 | * 3. All advertising materials mentioning features or use of this software | |
960 | * must display the following acknowledgement: | |
961 | * This product includes software developed by the University of | |
962 | * California, Berkeley and its contributors. | |
963 | * 4. Neither the name of the University nor the names of its contributors | |
964 | * may be used to endorse or promote products derived from this software | |
965 | * without specific prior written permission. | |
966 | * | |
967 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
968 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
969 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
970 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
971 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
972 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
973 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
974 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
975 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
976 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
977 | * SUCH DAMAGE. | |
978 | * | |
979 | * $Id$ | |
980 | */ | |
981 | ||
982 | char * | |
983 | colon(cp) | |
984 | char *cp; | |
985 | { | |
986 | if (*cp == ':') /* Leading colon is part of file name. */ | |
987 | return (0); | |
988 | ||
989 | for (; *cp; ++cp) { | |
990 | if (*cp == ':') | |
991 | return (cp); | |
992 | if (*cp == '/') | |
993 | return (0); | |
994 | } | |
995 | return (0); | |
996 | } | |
997 | ||
998 | void | |
999 | verifydir(cp) | |
1000 | char *cp; | |
1001 | { | |
1002 | struct stat stb; | |
1003 | ||
1004 | if (!stat(cp, &stb)) { | |
1005 | if (S_ISDIR(stb.st_mode)) | |
1006 | return; | |
1007 | errno = ENOTDIR; | |
1008 | } | |
1009 | run_err("%s: %s", cp, strerror(errno)); | |
1010 | exit(1); | |
1011 | } | |
1012 | ||
1013 | int | |
1014 | okname(cp0) | |
1015 | char *cp0; | |
1016 | { | |
1017 | int c; | |
1018 | char *cp; | |
1019 | ||
1020 | cp = cp0; | |
1021 | do { | |
1022 | c = *cp; | |
1023 | if (c & 0200) | |
1024 | goto bad; | |
1025 | if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') | |
1026 | goto bad; | |
1027 | } while (*++cp); | |
1028 | return (1); | |
1029 | ||
1030 | bad: fprintf(stderr, "%s: invalid user name", cp0); | |
1031 | return (0); | |
1032 | } | |
1033 | ||
1034 | BUF * | |
1035 | allocbuf(bp, fd, blksize) | |
1036 | BUF *bp; | |
1037 | int fd, blksize; | |
1038 | { | |
1039 | size_t size; | |
1040 | struct stat stb; | |
1041 | ||
1042 | if (fstat(fd, &stb) < 0) { | |
1043 | run_err("fstat: %s", strerror(errno)); | |
1044 | return (0); | |
1045 | } | |
1046 | if (stb.st_blksize == 0) | |
1047 | size = blksize; | |
1048 | else | |
1049 | size = blksize + (stb.st_blksize - blksize % stb.st_blksize) % | |
1050 | stb.st_blksize; | |
1051 | if (bp->cnt >= size) | |
1052 | return (bp); | |
1053 | if (bp->buf == NULL) | |
1054 | bp->buf = xmalloc(size); | |
1055 | else | |
1056 | bp->buf = xrealloc(bp->buf, size); | |
1057 | bp->cnt = size; | |
1058 | return (bp); | |
1059 | } | |
1060 | ||
1061 | void | |
1062 | lostconn(signo) | |
1063 | int signo; | |
1064 | { | |
1065 | if (!iamremote) | |
1066 | fprintf(stderr, "lost connection\n"); | |
1067 | exit(1); | |
1068 | } | |
1069 | ||
1070 | /* | |
1071 | * ensure all of data on socket comes through. f==read || f==write | |
1072 | */ | |
1073 | int | |
1074 | atomicio(f, fd, s, n) | |
1075 | int (*f)(); | |
1076 | char *s; | |
1077 | { | |
1078 | int res, pos = 0; | |
1079 | ||
1080 | while (n>pos) { | |
1081 | res = (f)(fd, s+pos, n-pos); | |
1082 | switch (res) { | |
1083 | case -1: | |
1084 | if (errno==EINTR || errno==EAGAIN) | |
1085 | continue; | |
1086 | case 0: | |
1087 | return (res); | |
1088 | default: | |
1089 | pos += res; | |
1090 | } | |
1091 | } | |
1092 | return (pos); | |
1093 | } | |
1094 | ||
1095 | void | |
1096 | alarmtimer(int wait) | |
1097 | { | |
1098 | struct itimerval itv; | |
1099 | ||
1100 | itv.it_value.tv_sec = wait; | |
1101 | itv.it_value.tv_usec = 0; | |
1102 | itv.it_interval = itv.it_value; | |
1103 | setitimer(ITIMER_REAL, &itv, NULL); | |
1104 | } | |
1105 | ||
1106 | void | |
1107 | updateprogressmeter(void) | |
1108 | { | |
1109 | int save_errno = errno; | |
1110 | ||
1111 | progressmeter(0); | |
1112 | errno = save_errno; | |
1113 | } | |
1114 | ||
1115 | void | |
1116 | progressmeter(int flag) | |
1117 | { | |
1118 | static const char prefixes[] = " KMGTP"; | |
1119 | static struct timeval lastupdate; | |
1120 | static off_t lastsize; | |
1121 | struct timeval now, td, wait; | |
1122 | off_t cursize, abbrevsize; | |
1123 | double elapsed; | |
b6573a35 | 1124 | int ratio, barlength, i, remaining; |
8efc0c15 | 1125 | char buf[256]; |
1126 | ||
1127 | if (flag == -1) { | |
1128 | (void)gettimeofday(&start, (struct timezone *)0); | |
1129 | lastupdate = start; | |
1130 | lastsize = 0; | |
1131 | } | |
1132 | (void)gettimeofday(&now, (struct timezone *)0); | |
1133 | cursize = statbytes; | |
59b0f0d4 | 1134 | if ((totalbytes >> 10) != 0) { |
db3a33ad | 1135 | ratio = (cursize >> 10) * 100 / (totalbytes >> 10); |
8efc0c15 | 1136 | ratio = MAX(ratio, 0); |
1137 | ratio = MIN(ratio, 100); | |
1138 | } | |
1139 | else | |
1140 | ratio = 100; | |
1141 | ||
1142 | snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio); | |
1143 | ||
1144 | barlength = getttywidth() - 51; | |
1145 | if (barlength > 0) { | |
1146 | i = barlength * ratio / 100; | |
1147 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1148 | "|%.*s%*s|", i, | |
1149 | "*****************************************************************************" | |
1150 | "*****************************************************************************", | |
1151 | barlength - i, ""); | |
1152 | } | |
1153 | ||
1154 | i = 0; | |
1155 | abbrevsize = cursize; | |
1156 | while (abbrevsize >= 100000 && i < sizeof(prefixes)) { | |
1157 | i++; | |
1158 | abbrevsize >>= 10; | |
1159 | } | |
1160 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5qd %c%c ", | |
1161 | (quad_t)abbrevsize, prefixes[i], prefixes[i] == ' ' ? ' ' : | |
1162 | 'B'); | |
1163 | ||
1164 | timersub(&now, &lastupdate, &wait); | |
1165 | if (cursize > lastsize) { | |
1166 | lastupdate = now; | |
1167 | lastsize = cursize; | |
1168 | if (wait.tv_sec >= STALLTIME) { | |
1169 | start.tv_sec += wait.tv_sec; | |
1170 | start.tv_usec += wait.tv_usec; | |
1171 | } | |
1172 | wait.tv_sec = 0; | |
1173 | } | |
1174 | ||
1175 | timersub(&now, &start, &td); | |
1176 | elapsed = td.tv_sec + (td.tv_usec / 1000000.0); | |
1177 | ||
1178 | if (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes) { | |
1179 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1180 | " --:-- ETA"); | |
1181 | } else if (wait.tv_sec >= STALLTIME) { | |
1182 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1183 | " - stalled -"); | |
1184 | } else { | |
1185 | remaining = (int)(totalbytes / (statbytes / elapsed) - elapsed); | |
5068f573 | 1186 | i = remaining / 3600; |
8efc0c15 | 1187 | if (i) |
1188 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1189 | "%2d:", i); | |
1190 | else | |
1191 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1192 | " "); | |
1193 | i = remaining % 3600; | |
1194 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1195 | "%02d:%02d ETA", i / 60, i % 60); | |
1196 | } | |
1197 | atomicio(write, fileno(stdout), buf, strlen(buf)); | |
1198 | ||
1199 | if (flag == -1) { | |
1200 | signal(SIGALRM, (void *)updateprogressmeter); | |
1201 | alarmtimer(1); | |
1202 | } else if (flag == 1) { | |
1203 | alarmtimer(0); | |
1204 | write(fileno(stdout), "\n", 1); | |
1205 | statbytes = 0; | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | int | |
1210 | getttywidth(void) | |
1211 | { | |
1212 | struct winsize winsize; | |
1213 | ||
1214 | if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1) | |
1215 | return(winsize.ws_col ? winsize.ws_col : 80); | |
1216 | else | |
1217 | return(80); | |
1218 | } | |
1219 | ||
1220 |