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Commit | Line | Data |
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3c0ef626 | 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. | |
0fff78ff | 55 | * 3. Neither the name of the University nor the names of its contributors |
3c0ef626 | 56 | * may be used to endorse or promote products derived from this software |
57 | * without specific prior written permission. | |
58 | * | |
59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
69 | * SUCH DAMAGE. | |
70 | * | |
71 | */ | |
72 | ||
73 | #include "includes.h" | |
12408a1b | 74 | RCSID("$OpenBSD: scp.c,v 1.113 2003/11/23 23:21:21 djm Exp $"); |
3c0ef626 | 75 | |
76 | #include "xmalloc.h" | |
77 | #include "atomicio.h" | |
78 | #include "pathnames.h" | |
79 | #include "log.h" | |
80 | #include "misc.h" | |
6a9b3198 | 81 | #include "progressmeter.h" |
3c0ef626 | 82 | |
83 | #ifdef HAVE___PROGNAME | |
84 | extern char *__progname; | |
85 | #else | |
86 | char *__progname; | |
87 | #endif | |
88 | ||
6a9b3198 | 89 | void bwlimit(int); |
3c0ef626 | 90 | |
91 | /* Struct for addargs */ | |
92 | arglist args; | |
93 | ||
6a9b3198 | 94 | /* Bandwidth limit */ |
12408a1b | 95 | off_t limit_rate = 0; |
3c0ef626 | 96 | |
97 | /* Name of current file being transferred. */ | |
98 | char *curfile; | |
99 | ||
100 | /* This is set to non-zero to enable verbose mode. */ | |
101 | int verbose_mode = 0; | |
102 | ||
103 | /* This is set to zero if the progressmeter is not desired. */ | |
104 | int showprogress = 1; | |
105 | ||
106 | /* This is the program to execute for the secured connection. ("ssh" or -S) */ | |
107 | char *ssh_program = _PATH_SSH_PROGRAM; | |
108 | ||
6a9b3198 | 109 | /* This is used to store the pid of ssh_program */ |
0fff78ff | 110 | pid_t do_cmd_pid = -1; |
111 | ||
112 | static void | |
113 | killchild(int signo) | |
114 | { | |
115 | if (do_cmd_pid > 1) | |
116 | kill(do_cmd_pid, signo); | |
117 | ||
118 | _exit(1); | |
119 | } | |
6a9b3198 | 120 | |
3c0ef626 | 121 | /* |
122 | * This function executes the given command as the specified user on the | |
123 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
124 | * assigns the input and output file descriptors on success. | |
125 | */ | |
126 | ||
127 | int | |
128 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc) | |
129 | { | |
130 | int pin[2], pout[2], reserved[2]; | |
131 | ||
132 | if (verbose_mode) | |
133 | fprintf(stderr, | |
134 | "Executing: program %s host %s, user %s, command %s\n", | |
135 | ssh_program, host, | |
136 | remuser ? remuser : "(unspecified)", cmd); | |
137 | ||
138 | /* | |
139 | * Reserve two descriptors so that the real pipes won't get | |
140 | * descriptors 0 and 1 because that will screw up dup2 below. | |
141 | */ | |
142 | pipe(reserved); | |
143 | ||
144 | /* Create a socket pair for communicating with ssh. */ | |
145 | if (pipe(pin) < 0) | |
146 | fatal("pipe: %s", strerror(errno)); | |
147 | if (pipe(pout) < 0) | |
148 | fatal("pipe: %s", strerror(errno)); | |
149 | ||
150 | /* Free the reserved descriptors. */ | |
151 | close(reserved[0]); | |
152 | close(reserved[1]); | |
153 | ||
0fff78ff | 154 | /* Fork a child to execute the command on the remote host using ssh. */ |
6a9b3198 | 155 | do_cmd_pid = fork(); |
156 | if (do_cmd_pid == 0) { | |
3c0ef626 | 157 | /* Child. */ |
158 | close(pin[1]); | |
159 | close(pout[0]); | |
160 | dup2(pin[0], 0); | |
161 | dup2(pout[1], 1); | |
162 | close(pin[0]); | |
163 | close(pout[1]); | |
164 | ||
165 | args.list[0] = ssh_program; | |
166 | if (remuser != NULL) | |
167 | addargs(&args, "-l%s", remuser); | |
168 | addargs(&args, "%s", host); | |
169 | addargs(&args, "%s", cmd); | |
170 | ||
171 | execvp(ssh_program, args.list); | |
172 | perror(ssh_program); | |
173 | exit(1); | |
6a9b3198 | 174 | } else if (do_cmd_pid == -1) { |
175 | fatal("fork: %s", strerror(errno)); | |
3c0ef626 | 176 | } |
177 | /* Parent. Close the other side, and return the local side. */ | |
178 | close(pin[0]); | |
179 | *fdout = pin[1]; | |
180 | close(pout[1]); | |
181 | *fdin = pout[0]; | |
0fff78ff | 182 | signal(SIGTERM, killchild); |
183 | signal(SIGINT, killchild); | |
184 | signal(SIGHUP, killchild); | |
3c0ef626 | 185 | return 0; |
186 | } | |
187 | ||
188 | typedef struct { | |
189 | int cnt; | |
190 | char *buf; | |
191 | } BUF; | |
192 | ||
193 | BUF *allocbuf(BUF *, int, int); | |
194 | void lostconn(int); | |
195 | void nospace(void); | |
196 | int okname(char *); | |
197 | void run_err(const char *,...); | |
198 | void verifydir(char *); | |
199 | ||
200 | struct passwd *pwd; | |
201 | uid_t userid; | |
202 | int errs, remin, remout; | |
203 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
204 | ||
205 | #define CMDNEEDS 64 | |
206 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
207 | ||
208 | int response(void); | |
209 | void rsource(char *, struct stat *); | |
210 | void sink(int, char *[]); | |
211 | void source(int, char *[]); | |
212 | void tolocal(int, char *[]); | |
213 | void toremote(char *, int, char *[]); | |
214 | void usage(void); | |
215 | ||
216 | int | |
0fff78ff | 217 | main(int argc, char **argv) |
3c0ef626 | 218 | { |
6a9b3198 | 219 | int ch, fflag, tflag, status; |
220 | double speed; | |
221 | char *targ, *endp; | |
3c0ef626 | 222 | extern char *optarg; |
223 | extern int optind; | |
224 | ||
0fff78ff | 225 | __progname = ssh_get_progname(argv[0]); |
3c0ef626 | 226 | |
227 | args.list = NULL; | |
f5799ae1 | 228 | addargs(&args, "ssh"); /* overwritten with ssh_program */ |
3c0ef626 | 229 | addargs(&args, "-x"); |
230 | addargs(&args, "-oForwardAgent no"); | |
3c0ef626 | 231 | addargs(&args, "-oClearAllForwardings yes"); |
232 | ||
233 | fflag = tflag = 0; | |
6a9b3198 | 234 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1) |
3c0ef626 | 235 | switch (ch) { |
236 | /* User-visible flags. */ | |
6a9b3198 | 237 | case '1': |
238 | case '2': | |
3c0ef626 | 239 | case '4': |
240 | case '6': | |
241 | case 'C': | |
242 | addargs(&args, "-%c", ch); | |
243 | break; | |
244 | case 'o': | |
245 | case 'c': | |
246 | case 'i': | |
247 | case 'F': | |
248 | addargs(&args, "-%c%s", ch, optarg); | |
249 | break; | |
250 | case 'P': | |
251 | addargs(&args, "-p%s", optarg); | |
252 | break; | |
253 | case 'B': | |
254 | addargs(&args, "-oBatchmode yes"); | |
255 | break; | |
6a9b3198 | 256 | case 'l': |
257 | speed = strtod(optarg, &endp); | |
258 | if (speed <= 0 || *endp != '\0') | |
259 | usage(); | |
12408a1b | 260 | limit_rate = speed * 1024; |
6a9b3198 | 261 | break; |
3c0ef626 | 262 | case 'p': |
263 | pflag = 1; | |
264 | break; | |
265 | case 'r': | |
266 | iamrecursive = 1; | |
267 | break; | |
268 | case 'S': | |
269 | ssh_program = xstrdup(optarg); | |
270 | break; | |
271 | case 'v': | |
272 | addargs(&args, "-v"); | |
273 | verbose_mode = 1; | |
274 | break; | |
275 | case 'q': | |
12408a1b | 276 | addargs(&args, "-q"); |
3c0ef626 | 277 | showprogress = 0; |
278 | break; | |
279 | ||
280 | /* Server options. */ | |
281 | case 'd': | |
282 | targetshouldbedirectory = 1; | |
283 | break; | |
284 | case 'f': /* "from" */ | |
285 | iamremote = 1; | |
286 | fflag = 1; | |
287 | break; | |
288 | case 't': /* "to" */ | |
289 | iamremote = 1; | |
290 | tflag = 1; | |
291 | #ifdef HAVE_CYGWIN | |
292 | setmode(0, O_BINARY); | |
293 | #endif | |
294 | break; | |
295 | default: | |
296 | usage(); | |
297 | } | |
298 | argc -= optind; | |
299 | argv += optind; | |
300 | ||
301 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
0fff78ff | 302 | fatal("unknown user %u", (u_int) userid); |
3c0ef626 | 303 | |
304 | if (!isatty(STDERR_FILENO)) | |
305 | showprogress = 0; | |
306 | ||
307 | remin = STDIN_FILENO; | |
308 | remout = STDOUT_FILENO; | |
309 | ||
310 | if (fflag) { | |
311 | /* Follow "protocol", send data. */ | |
312 | (void) response(); | |
313 | source(argc, argv); | |
314 | exit(errs != 0); | |
315 | } | |
316 | if (tflag) { | |
317 | /* Receive data. */ | |
318 | sink(argc, argv); | |
319 | exit(errs != 0); | |
320 | } | |
321 | if (argc < 2) | |
322 | usage(); | |
323 | if (argc > 2) | |
324 | targetshouldbedirectory = 1; | |
325 | ||
326 | remin = remout = -1; | |
6a9b3198 | 327 | do_cmd_pid = -1; |
3c0ef626 | 328 | /* Command to be executed on remote system using "ssh". */ |
329 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
330 | verbose_mode ? " -v" : "", | |
331 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
332 | targetshouldbedirectory ? " -d" : ""); | |
333 | ||
334 | (void) signal(SIGPIPE, lostconn); | |
335 | ||
336 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
337 | toremote(targ, argc, argv); | |
338 | else { | |
339 | tolocal(argc, argv); /* Dest is local host. */ | |
340 | if (targetshouldbedirectory) | |
341 | verifydir(argv[argc - 1]); | |
342 | } | |
6a9b3198 | 343 | /* |
344 | * Finally check the exit status of the ssh process, if one was forked | |
345 | * and no error has occured yet | |
346 | */ | |
347 | if (do_cmd_pid != -1 && errs == 0) { | |
348 | if (remin != -1) | |
349 | (void) close(remin); | |
350 | if (remout != -1) | |
351 | (void) close(remout); | |
352 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
353 | errs = 1; | |
354 | else { | |
355 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
356 | errs = 1; | |
357 | } | |
358 | } | |
3c0ef626 | 359 | exit(errs != 0); |
360 | } | |
361 | ||
362 | void | |
0fff78ff | 363 | toremote(char *targ, int argc, char **argv) |
3c0ef626 | 364 | { |
365 | int i, len; | |
366 | char *bp, *host, *src, *suser, *thost, *tuser; | |
367 | ||
368 | *targ++ = 0; | |
369 | if (*targ == 0) | |
370 | targ = "."; | |
371 | ||
6a9b3198 | 372 | if ((thost = strrchr(argv[argc - 1], '@'))) { |
3c0ef626 | 373 | /* user@host */ |
374 | *thost++ = 0; | |
375 | tuser = argv[argc - 1]; | |
376 | if (*tuser == '\0') | |
377 | tuser = NULL; | |
3c0ef626 | 378 | } else { |
379 | thost = argv[argc - 1]; | |
380 | tuser = NULL; | |
381 | } | |
382 | ||
383 | for (i = 0; i < argc - 1; i++) { | |
384 | src = colon(argv[i]); | |
385 | if (src) { /* remote to remote */ | |
386 | static char *ssh_options = | |
f5799ae1 | 387 | "-x -o'ClearAllForwardings yes'"; |
3c0ef626 | 388 | *src++ = 0; |
389 | if (*src == 0) | |
390 | src = "."; | |
6a9b3198 | 391 | host = strrchr(argv[i], '@'); |
3c0ef626 | 392 | len = strlen(ssh_program) + strlen(argv[i]) + |
393 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
394 | strlen(thost) + strlen(targ) + | |
395 | strlen(ssh_options) + CMDNEEDS + 20; | |
396 | bp = xmalloc(len); | |
397 | if (host) { | |
398 | *host++ = 0; | |
399 | host = cleanhostname(host); | |
400 | suser = argv[i]; | |
401 | if (*suser == '\0') | |
402 | suser = pwd->pw_name; | |
6a9b3198 | 403 | else if (!okname(suser)) { |
404 | xfree(bp); | |
3c0ef626 | 405 | continue; |
6a9b3198 | 406 | } |
407 | if (tuser && !okname(tuser)) { | |
408 | xfree(bp); | |
409 | continue; | |
410 | } | |
3c0ef626 | 411 | snprintf(bp, len, |
412 | "%s%s %s -n " | |
413 | "-l %s %s %s %s '%s%s%s:%s'", | |
414 | ssh_program, verbose_mode ? " -v" : "", | |
415 | ssh_options, suser, host, cmd, src, | |
416 | tuser ? tuser : "", tuser ? "@" : "", | |
417 | thost, targ); | |
418 | } else { | |
419 | host = cleanhostname(argv[i]); | |
420 | snprintf(bp, len, | |
421 | "exec %s%s %s -n %s " | |
422 | "%s %s '%s%s%s:%s'", | |
423 | ssh_program, verbose_mode ? " -v" : "", | |
424 | ssh_options, host, cmd, src, | |
425 | tuser ? tuser : "", tuser ? "@" : "", | |
426 | thost, targ); | |
427 | } | |
428 | if (verbose_mode) | |
429 | fprintf(stderr, "Executing: %s\n", bp); | |
12408a1b | 430 | if (system(bp) != 0) |
431 | errs = 1; | |
3c0ef626 | 432 | (void) xfree(bp); |
433 | } else { /* local to remote */ | |
434 | if (remin == -1) { | |
435 | len = strlen(targ) + CMDNEEDS + 20; | |
436 | bp = xmalloc(len); | |
437 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
438 | host = cleanhostname(thost); | |
439 | if (do_cmd(host, tuser, bp, &remin, | |
440 | &remout, argc) < 0) | |
441 | exit(1); | |
442 | if (response() < 0) | |
443 | exit(1); | |
444 | (void) xfree(bp); | |
445 | } | |
446 | source(1, argv + i); | |
447 | } | |
448 | } | |
449 | } | |
450 | ||
451 | void | |
0fff78ff | 452 | tolocal(int argc, char **argv) |
3c0ef626 | 453 | { |
454 | int i, len; | |
455 | char *bp, *host, *src, *suser; | |
456 | ||
457 | for (i = 0; i < argc - 1; i++) { | |
458 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
459 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
460 | strlen(argv[argc - 1]) + 20; | |
461 | bp = xmalloc(len); | |
462 | (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, | |
463 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
464 | argv[i], argv[argc - 1]); | |
465 | if (verbose_mode) | |
466 | fprintf(stderr, "Executing: %s\n", bp); | |
467 | if (system(bp)) | |
468 | ++errs; | |
469 | (void) xfree(bp); | |
470 | continue; | |
471 | } | |
472 | *src++ = 0; | |
473 | if (*src == 0) | |
474 | src = "."; | |
6a9b3198 | 475 | if ((host = strrchr(argv[i], '@')) == NULL) { |
3c0ef626 | 476 | host = argv[i]; |
477 | suser = NULL; | |
478 | } else { | |
479 | *host++ = 0; | |
480 | suser = argv[i]; | |
481 | if (*suser == '\0') | |
482 | suser = pwd->pw_name; | |
3c0ef626 | 483 | } |
484 | host = cleanhostname(host); | |
485 | len = strlen(src) + CMDNEEDS + 20; | |
486 | bp = xmalloc(len); | |
487 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
488 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
489 | (void) xfree(bp); | |
490 | ++errs; | |
491 | continue; | |
492 | } | |
493 | xfree(bp); | |
494 | sink(1, argv + argc - 1); | |
495 | (void) close(remin); | |
496 | remin = remout = -1; | |
497 | } | |
498 | } | |
499 | ||
500 | void | |
0fff78ff | 501 | source(int argc, char **argv) |
3c0ef626 | 502 | { |
503 | struct stat stb; | |
504 | static BUF buffer; | |
505 | BUF *bp; | |
6a9b3198 | 506 | off_t i, amt, result, statbytes; |
3c0ef626 | 507 | int fd, haderr, indx; |
508 | char *last, *name, buf[2048]; | |
509 | int len; | |
510 | ||
511 | for (indx = 0; indx < argc; ++indx) { | |
512 | name = argv[indx]; | |
513 | statbytes = 0; | |
514 | len = strlen(name); | |
515 | while (len > 1 && name[len-1] == '/') | |
516 | name[--len] = '\0'; | |
517 | if (strchr(name, '\n') != NULL) { | |
518 | run_err("%s: skipping, filename contains a newline", | |
519 | name); | |
520 | goto next; | |
521 | } | |
522 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
523 | goto syserr; | |
524 | if (fstat(fd, &stb) < 0) { | |
525 | syserr: run_err("%s: %s", name, strerror(errno)); | |
526 | goto next; | |
527 | } | |
528 | switch (stb.st_mode & S_IFMT) { | |
529 | case S_IFREG: | |
530 | break; | |
531 | case S_IFDIR: | |
532 | if (iamrecursive) { | |
533 | rsource(name, &stb); | |
534 | goto next; | |
535 | } | |
536 | /* FALLTHROUGH */ | |
537 | default: | |
538 | run_err("%s: not a regular file", name); | |
539 | goto next; | |
540 | } | |
541 | if ((last = strrchr(name, '/')) == NULL) | |
542 | last = name; | |
543 | else | |
544 | ++last; | |
545 | curfile = last; | |
546 | if (pflag) { | |
547 | /* | |
548 | * Make it compatible with possible future | |
549 | * versions expecting microseconds. | |
550 | */ | |
551 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
552 | (u_long) stb.st_mtime, | |
553 | (u_long) stb.st_atime); | |
0fff78ff | 554 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 555 | if (response() < 0) |
556 | goto next; | |
557 | } | |
558 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
3c0ef626 | 559 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
560 | (u_int) (stb.st_mode & FILEMODEMASK), | |
0fff78ff | 561 | (int64_t)stb.st_size, last); |
3c0ef626 | 562 | if (verbose_mode) { |
563 | fprintf(stderr, "Sending file modes: %s", buf); | |
3c0ef626 | 564 | } |
0fff78ff | 565 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 566 | if (response() < 0) |
567 | goto next; | |
568 | if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { | |
569 | next: (void) close(fd); | |
570 | continue; | |
571 | } | |
6a9b3198 | 572 | if (showprogress) |
573 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
3c0ef626 | 574 | /* Keep writing after an error so that we stay sync'd up. */ |
575 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
576 | amt = bp->cnt; | |
577 | if (i + amt > stb.st_size) | |
578 | amt = stb.st_size - i; | |
579 | if (!haderr) { | |
580 | result = atomicio(read, fd, bp->buf, amt); | |
581 | if (result != amt) | |
582 | haderr = result >= 0 ? EIO : errno; | |
583 | } | |
584 | if (haderr) | |
0fff78ff | 585 | (void) atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 586 | else { |
0fff78ff | 587 | result = atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 588 | if (result != amt) |
589 | haderr = result >= 0 ? EIO : errno; | |
590 | statbytes += result; | |
591 | } | |
12408a1b | 592 | if (limit_rate) |
6a9b3198 | 593 | bwlimit(amt); |
3c0ef626 | 594 | } |
595 | if (showprogress) | |
6a9b3198 | 596 | stop_progress_meter(); |
3c0ef626 | 597 | |
598 | if (close(fd) < 0 && !haderr) | |
599 | haderr = errno; | |
600 | if (!haderr) | |
0fff78ff | 601 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 602 | else |
603 | run_err("%s: %s", name, strerror(haderr)); | |
604 | (void) response(); | |
605 | } | |
606 | } | |
607 | ||
608 | void | |
0fff78ff | 609 | rsource(char *name, struct stat *statp) |
3c0ef626 | 610 | { |
611 | DIR *dirp; | |
612 | struct dirent *dp; | |
613 | char *last, *vect[1], path[1100]; | |
614 | ||
615 | if (!(dirp = opendir(name))) { | |
616 | run_err("%s: %s", name, strerror(errno)); | |
617 | return; | |
618 | } | |
619 | last = strrchr(name, '/'); | |
620 | if (last == 0) | |
621 | last = name; | |
622 | else | |
623 | last++; | |
624 | if (pflag) { | |
625 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
626 | (u_long) statp->st_mtime, | |
627 | (u_long) statp->st_atime); | |
0fff78ff | 628 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 629 | if (response() < 0) { |
630 | closedir(dirp); | |
631 | return; | |
632 | } | |
633 | } | |
634 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
635 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
636 | if (verbose_mode) | |
637 | fprintf(stderr, "Entering directory: %s", path); | |
0fff78ff | 638 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 639 | if (response() < 0) { |
640 | closedir(dirp); | |
641 | return; | |
642 | } | |
643 | while ((dp = readdir(dirp)) != NULL) { | |
644 | if (dp->d_ino == 0) | |
645 | continue; | |
646 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
647 | continue; | |
648 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
649 | run_err("%s/%s: name too long", name, dp->d_name); | |
650 | continue; | |
651 | } | |
652 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
653 | vect[0] = path; | |
654 | source(1, vect); | |
655 | } | |
656 | (void) closedir(dirp); | |
0fff78ff | 657 | (void) atomicio(vwrite, remout, "E\n", 2); |
3c0ef626 | 658 | (void) response(); |
659 | } | |
660 | ||
6a9b3198 | 661 | void |
662 | bwlimit(int amount) | |
663 | { | |
664 | static struct timeval bwstart, bwend; | |
665 | static int lamt, thresh = 16384; | |
666 | u_int64_t wait; | |
667 | struct timespec ts, rm; | |
668 | ||
669 | if (!timerisset(&bwstart)) { | |
670 | gettimeofday(&bwstart, NULL); | |
671 | return; | |
672 | } | |
673 | ||
674 | lamt += amount; | |
675 | if (lamt < thresh) | |
676 | return; | |
677 | ||
678 | gettimeofday(&bwend, NULL); | |
679 | timersub(&bwend, &bwstart, &bwend); | |
680 | if (!timerisset(&bwend)) | |
681 | return; | |
682 | ||
683 | lamt *= 8; | |
12408a1b | 684 | wait = (double)1000000L * lamt / limit_rate; |
6a9b3198 | 685 | |
686 | bwstart.tv_sec = wait / 1000000L; | |
687 | bwstart.tv_usec = wait % 1000000L; | |
688 | ||
689 | if (timercmp(&bwstart, &bwend, >)) { | |
690 | timersub(&bwstart, &bwend, &bwend); | |
691 | ||
692 | /* Adjust the wait time */ | |
693 | if (bwend.tv_sec) { | |
694 | thresh /= 2; | |
695 | if (thresh < 2048) | |
696 | thresh = 2048; | |
697 | } else if (bwend.tv_usec < 100) { | |
698 | thresh *= 2; | |
699 | if (thresh > 32768) | |
700 | thresh = 32768; | |
701 | } | |
702 | ||
703 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
704 | while (nanosleep(&ts, &rm) == -1) { | |
705 | if (errno != EINTR) | |
706 | break; | |
707 | ts = rm; | |
708 | } | |
709 | } | |
710 | ||
711 | lamt = 0; | |
712 | gettimeofday(&bwstart, NULL); | |
713 | } | |
714 | ||
3c0ef626 | 715 | void |
0fff78ff | 716 | sink(int argc, char **argv) |
3c0ef626 | 717 | { |
718 | static BUF buffer; | |
719 | struct stat stb; | |
720 | enum { | |
721 | YES, NO, DISPLAYED | |
722 | } wrerr; | |
723 | BUF *bp; | |
724 | off_t i, j; | |
725 | int amt, count, exists, first, mask, mode, ofd, omode; | |
6a9b3198 | 726 | off_t size, statbytes; |
3c0ef626 | 727 | int setimes, targisdir, wrerrno = 0; |
728 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
729 | struct timeval tv[2]; | |
730 | ||
731 | #define atime tv[0] | |
732 | #define mtime tv[1] | |
733 | #define SCREWUP(str) do { why = str; goto screwup; } while (0) | |
734 | ||
735 | setimes = targisdir = 0; | |
736 | mask = umask(0); | |
737 | if (!pflag) | |
738 | (void) umask(mask); | |
739 | if (argc != 1) { | |
740 | run_err("ambiguous target"); | |
741 | exit(1); | |
742 | } | |
743 | targ = *argv; | |
744 | if (targetshouldbedirectory) | |
745 | verifydir(targ); | |
746 | ||
0fff78ff | 747 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 748 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) |
749 | targisdir = 1; | |
750 | for (first = 1;; first = 0) { | |
751 | cp = buf; | |
752 | if (atomicio(read, remin, cp, 1) <= 0) | |
753 | return; | |
754 | if (*cp++ == '\n') | |
755 | SCREWUP("unexpected <newline>"); | |
756 | do { | |
757 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
758 | SCREWUP("lost connection"); | |
759 | *cp++ = ch; | |
760 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
761 | *cp = 0; | |
762 | ||
763 | if (buf[0] == '\01' || buf[0] == '\02') { | |
764 | if (iamremote == 0) | |
0fff78ff | 765 | (void) atomicio(vwrite, STDERR_FILENO, |
3c0ef626 | 766 | buf + 1, strlen(buf + 1)); |
767 | if (buf[0] == '\02') | |
768 | exit(1); | |
769 | ++errs; | |
770 | continue; | |
771 | } | |
772 | if (buf[0] == 'E') { | |
0fff78ff | 773 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 774 | return; |
775 | } | |
776 | if (ch == '\n') | |
777 | *--cp = 0; | |
778 | ||
779 | cp = buf; | |
780 | if (*cp == 'T') { | |
781 | setimes++; | |
782 | cp++; | |
783 | mtime.tv_sec = strtol(cp, &cp, 10); | |
784 | if (!cp || *cp++ != ' ') | |
785 | SCREWUP("mtime.sec not delimited"); | |
786 | mtime.tv_usec = strtol(cp, &cp, 10); | |
787 | if (!cp || *cp++ != ' ') | |
788 | SCREWUP("mtime.usec not delimited"); | |
789 | atime.tv_sec = strtol(cp, &cp, 10); | |
790 | if (!cp || *cp++ != ' ') | |
791 | SCREWUP("atime.sec not delimited"); | |
792 | atime.tv_usec = strtol(cp, &cp, 10); | |
793 | if (!cp || *cp++ != '\0') | |
794 | SCREWUP("atime.usec not delimited"); | |
0fff78ff | 795 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 796 | continue; |
797 | } | |
798 | if (*cp != 'C' && *cp != 'D') { | |
799 | /* | |
800 | * Check for the case "rcp remote:foo\* local:bar". | |
801 | * In this case, the line "No match." can be returned | |
802 | * by the shell before the rcp command on the remote is | |
803 | * executed so the ^Aerror_message convention isn't | |
804 | * followed. | |
805 | */ | |
806 | if (first) { | |
807 | run_err("%s", cp); | |
808 | exit(1); | |
809 | } | |
810 | SCREWUP("expected control record"); | |
811 | } | |
812 | mode = 0; | |
813 | for (++cp; cp < buf + 5; cp++) { | |
814 | if (*cp < '0' || *cp > '7') | |
815 | SCREWUP("bad mode"); | |
816 | mode = (mode << 3) | (*cp - '0'); | |
817 | } | |
818 | if (*cp++ != ' ') | |
819 | SCREWUP("mode not delimited"); | |
820 | ||
821 | for (size = 0; isdigit(*cp);) | |
822 | size = size * 10 + (*cp++ - '0'); | |
823 | if (*cp++ != ' ') | |
824 | SCREWUP("size not delimited"); | |
825 | if (targisdir) { | |
826 | static char *namebuf; | |
827 | static int cursize; | |
828 | size_t need; | |
829 | ||
830 | need = strlen(targ) + strlen(cp) + 250; | |
831 | if (need > cursize) { | |
832 | if (namebuf) | |
833 | xfree(namebuf); | |
834 | namebuf = xmalloc(need); | |
835 | cursize = need; | |
836 | } | |
837 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
700318f3 | 838 | strcmp(targ, "/") ? "/" : "", cp); |
3c0ef626 | 839 | np = namebuf; |
840 | } else | |
841 | np = targ; | |
842 | curfile = cp; | |
843 | exists = stat(np, &stb) == 0; | |
844 | if (buf[0] == 'D') { | |
845 | int mod_flag = pflag; | |
846 | if (exists) { | |
847 | if (!S_ISDIR(stb.st_mode)) { | |
848 | errno = ENOTDIR; | |
849 | goto bad; | |
850 | } | |
851 | if (pflag) | |
852 | (void) chmod(np, mode); | |
853 | } else { | |
854 | /* Handle copying from a read-only | |
855 | directory */ | |
856 | mod_flag = 1; | |
857 | if (mkdir(np, mode | S_IRWXU) < 0) | |
858 | goto bad; | |
859 | } | |
860 | vect[0] = xstrdup(np); | |
861 | sink(1, vect); | |
862 | if (setimes) { | |
863 | setimes = 0; | |
864 | if (utimes(vect[0], tv) < 0) | |
865 | run_err("%s: set times: %s", | |
866 | vect[0], strerror(errno)); | |
867 | } | |
868 | if (mod_flag) | |
869 | (void) chmod(vect[0], mode); | |
870 | if (vect[0]) | |
871 | xfree(vect[0]); | |
872 | continue; | |
873 | } | |
874 | omode = mode; | |
875 | mode |= S_IWRITE; | |
876 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
877 | bad: run_err("%s: %s", np, strerror(errno)); | |
878 | continue; | |
879 | } | |
0fff78ff | 880 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 881 | if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { |
882 | (void) close(ofd); | |
883 | continue; | |
884 | } | |
885 | cp = bp->buf; | |
886 | wrerr = NO; | |
887 | ||
3c0ef626 | 888 | statbytes = 0; |
6a9b3198 | 889 | if (showprogress) |
890 | start_progress_meter(curfile, size, &statbytes); | |
3c0ef626 | 891 | for (count = i = 0; i < size; i += 4096) { |
892 | amt = 4096; | |
893 | if (i + amt > size) | |
894 | amt = size - i; | |
895 | count += amt; | |
896 | do { | |
897 | j = read(remin, cp, amt); | |
898 | if (j == -1 && (errno == EINTR || | |
899 | errno == EAGAIN)) { | |
900 | continue; | |
901 | } else if (j <= 0) { | |
902 | run_err("%s", j ? strerror(errno) : | |
903 | "dropped connection"); | |
904 | exit(1); | |
905 | } | |
906 | amt -= j; | |
907 | cp += j; | |
908 | statbytes += j; | |
909 | } while (amt > 0); | |
12408a1b | 910 | |
911 | if (limit_rate) | |
6a9b3198 | 912 | bwlimit(4096); |
913 | ||
3c0ef626 | 914 | if (count == bp->cnt) { |
915 | /* Keep reading so we stay sync'd up. */ | |
916 | if (wrerr == NO) { | |
0fff78ff | 917 | j = atomicio(vwrite, ofd, bp->buf, count); |
3c0ef626 | 918 | if (j != count) { |
919 | wrerr = YES; | |
920 | wrerrno = j >= 0 ? EIO : errno; | |
921 | } | |
922 | } | |
923 | count = 0; | |
924 | cp = bp->buf; | |
925 | } | |
926 | } | |
927 | if (showprogress) | |
6a9b3198 | 928 | stop_progress_meter(); |
3c0ef626 | 929 | if (count != 0 && wrerr == NO && |
0fff78ff | 930 | (j = atomicio(vwrite, ofd, bp->buf, count)) != count) { |
3c0ef626 | 931 | wrerr = YES; |
932 | wrerrno = j >= 0 ? EIO : errno; | |
933 | } | |
6a9b3198 | 934 | if (wrerr == NO && ftruncate(ofd, size) != 0) { |
3c0ef626 | 935 | run_err("%s: truncate: %s", np, strerror(errno)); |
936 | wrerr = DISPLAYED; | |
937 | } | |
938 | if (pflag) { | |
939 | if (exists || omode != mode) | |
940 | #ifdef HAVE_FCHMOD | |
941 | if (fchmod(ofd, omode)) | |
942 | #else /* HAVE_FCHMOD */ | |
943 | if (chmod(np, omode)) | |
944 | #endif /* HAVE_FCHMOD */ | |
945 | run_err("%s: set mode: %s", | |
946 | np, strerror(errno)); | |
947 | } else { | |
948 | if (!exists && omode != mode) | |
949 | #ifdef HAVE_FCHMOD | |
950 | if (fchmod(ofd, omode & ~mask)) | |
951 | #else /* HAVE_FCHMOD */ | |
952 | if (chmod(np, omode & ~mask)) | |
953 | #endif /* HAVE_FCHMOD */ | |
954 | run_err("%s: set mode: %s", | |
955 | np, strerror(errno)); | |
956 | } | |
957 | if (close(ofd) == -1) { | |
958 | wrerr = YES; | |
959 | wrerrno = errno; | |
960 | } | |
961 | (void) response(); | |
962 | if (setimes && wrerr == NO) { | |
963 | setimes = 0; | |
964 | if (utimes(np, tv) < 0) { | |
965 | run_err("%s: set times: %s", | |
966 | np, strerror(errno)); | |
967 | wrerr = DISPLAYED; | |
968 | } | |
969 | } | |
970 | switch (wrerr) { | |
971 | case YES: | |
972 | run_err("%s: %s", np, strerror(wrerrno)); | |
973 | break; | |
974 | case NO: | |
0fff78ff | 975 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 976 | break; |
977 | case DISPLAYED: | |
978 | break; | |
979 | } | |
980 | } | |
981 | screwup: | |
982 | run_err("protocol error: %s", why); | |
983 | exit(1); | |
984 | } | |
985 | ||
986 | int | |
e9a17296 | 987 | response(void) |
3c0ef626 | 988 | { |
989 | char ch, *cp, resp, rbuf[2048]; | |
990 | ||
991 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
992 | lostconn(0); | |
993 | ||
994 | cp = rbuf; | |
995 | switch (resp) { | |
996 | case 0: /* ok */ | |
997 | return (0); | |
998 | default: | |
999 | *cp++ = resp; | |
1000 | /* FALLTHROUGH */ | |
1001 | case 1: /* error, followed by error msg */ | |
1002 | case 2: /* fatal error, "" */ | |
1003 | do { | |
1004 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1005 | lostconn(0); | |
1006 | *cp++ = ch; | |
1007 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1008 | ||
1009 | if (!iamremote) | |
0fff78ff | 1010 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); |
3c0ef626 | 1011 | ++errs; |
1012 | if (resp == 1) | |
1013 | return (-1); | |
1014 | exit(1); | |
1015 | } | |
1016 | /* NOTREACHED */ | |
1017 | } | |
1018 | ||
1019 | void | |
e9a17296 | 1020 | usage(void) |
3c0ef626 | 1021 | { |
1022 | (void) fprintf(stderr, | |
12408a1b | 1023 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" |
1024 | " [-l limit] [-o ssh_option] [-P port] [-S program]\n" | |
f5799ae1 | 1025 | " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); |
3c0ef626 | 1026 | exit(1); |
1027 | } | |
1028 | ||
1029 | void | |
1030 | run_err(const char *fmt,...) | |
1031 | { | |
1032 | static FILE *fp; | |
1033 | va_list ap; | |
1034 | ||
1035 | ++errs; | |
1036 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
1037 | return; | |
1038 | (void) fprintf(fp, "%c", 0x01); | |
1039 | (void) fprintf(fp, "scp: "); | |
1040 | va_start(ap, fmt); | |
1041 | (void) vfprintf(fp, fmt, ap); | |
1042 | va_end(ap); | |
1043 | (void) fprintf(fp, "\n"); | |
1044 | (void) fflush(fp); | |
1045 | ||
1046 | if (!iamremote) { | |
1047 | va_start(ap, fmt); | |
1048 | vfprintf(stderr, fmt, ap); | |
1049 | va_end(ap); | |
1050 | fprintf(stderr, "\n"); | |
1051 | } | |
1052 | } | |
1053 | ||
1054 | void | |
0fff78ff | 1055 | verifydir(char *cp) |
3c0ef626 | 1056 | { |
1057 | struct stat stb; | |
1058 | ||
1059 | if (!stat(cp, &stb)) { | |
1060 | if (S_ISDIR(stb.st_mode)) | |
1061 | return; | |
1062 | errno = ENOTDIR; | |
1063 | } | |
1064 | run_err("%s: %s", cp, strerror(errno)); | |
1065 | exit(1); | |
1066 | } | |
1067 | ||
1068 | int | |
0fff78ff | 1069 | okname(char *cp0) |
3c0ef626 | 1070 | { |
1071 | int c; | |
1072 | char *cp; | |
1073 | ||
1074 | cp = cp0; | |
1075 | do { | |
1076 | c = (int)*cp; | |
1077 | if (c & 0200) | |
1078 | goto bad; | |
6a9b3198 | 1079 | if (!isalpha(c) && !isdigit(c)) { |
1080 | switch (c) { | |
1081 | case '\'': | |
1082 | case '"': | |
1083 | case '`': | |
1084 | case ' ': | |
1085 | case '#': | |
1086 | goto bad; | |
1087 | default: | |
1088 | break; | |
1089 | } | |
1090 | } | |
3c0ef626 | 1091 | } while (*++cp); |
1092 | return (1); | |
1093 | ||
1094 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1095 | return (0); | |
1096 | } | |
1097 | ||
1098 | BUF * | |
0fff78ff | 1099 | allocbuf(BUF *bp, int fd, int blksize) |
3c0ef626 | 1100 | { |
1101 | size_t size; | |
1102 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1103 | struct stat stb; | |
1104 | ||
1105 | if (fstat(fd, &stb) < 0) { | |
1106 | run_err("fstat: %s", strerror(errno)); | |
1107 | return (0); | |
1108 | } | |
6a9b3198 | 1109 | size = roundup(stb.st_blksize, blksize); |
1110 | if (size == 0) | |
3c0ef626 | 1111 | size = blksize; |
3c0ef626 | 1112 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
1113 | size = blksize; | |
1114 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1115 | if (bp->cnt >= size) | |
1116 | return (bp); | |
1117 | if (bp->buf == NULL) | |
1118 | bp->buf = xmalloc(size); | |
1119 | else | |
1120 | bp->buf = xrealloc(bp->buf, size); | |
1121 | memset(bp->buf, 0, size); | |
1122 | bp->cnt = size; | |
1123 | return (bp); | |
1124 | } | |
1125 | ||
1126 | void | |
0fff78ff | 1127 | lostconn(int signo) |
3c0ef626 | 1128 | { |
1129 | if (!iamremote) | |
1130 | write(STDERR_FILENO, "lost connection\n", 16); | |
1131 | if (signo) | |
1132 | _exit(1); | |
1133 | else | |
1134 | exit(1); | |
1135 | } |