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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. | |
473db5ab | 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" | |
473db5ab | 74 | RCSID("$OpenBSD: scp.c,v 1.125 2005/07/27 10:39:03 dtucker Exp $"); |
3c0ef626 | 75 | |
76 | #include "xmalloc.h" | |
77 | #include "atomicio.h" | |
78 | #include "pathnames.h" | |
79 | #include "log.h" | |
80 | #include "misc.h" | |
473db5ab | 81 | #include "progressmeter.h" |
3c0ef626 | 82 | |
3c0ef626 | 83 | extern char *__progname; |
3c0ef626 | 84 | |
473db5ab | 85 | void bwlimit(int); |
3c0ef626 | 86 | |
87 | /* Struct for addargs */ | |
88 | arglist args; | |
89 | ||
473db5ab | 90 | /* Bandwidth limit */ |
91 | off_t limit_rate = 0; | |
3c0ef626 | 92 | |
93 | /* Name of current file being transferred. */ | |
94 | char *curfile; | |
95 | ||
96 | /* This is set to non-zero to enable verbose mode. */ | |
97 | int verbose_mode = 0; | |
98 | ||
99 | /* This is set to zero if the progressmeter is not desired. */ | |
100 | int showprogress = 1; | |
101 | ||
102 | /* This is the program to execute for the secured connection. ("ssh" or -S) */ | |
103 | char *ssh_program = _PATH_SSH_PROGRAM; | |
104 | ||
473db5ab | 105 | /* This is used to store the pid of ssh_program */ |
106 | pid_t do_cmd_pid = -1; | |
107 | ||
108 | static void | |
109 | killchild(int signo) | |
110 | { | |
111 | if (do_cmd_pid > 1) { | |
112 | kill(do_cmd_pid, signo ? signo : SIGTERM); | |
113 | waitpid(do_cmd_pid, NULL, 0); | |
114 | } | |
115 | ||
116 | if (signo) | |
117 | _exit(1); | |
118 | exit(1); | |
119 | } | |
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 | ||
473db5ab | 154 | /* Fork a child to execute the command on the remote host using ssh. */ |
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); | |
473db5ab | 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]; | |
473db5ab | 182 | signal(SIGTERM, killchild); |
183 | signal(SIGINT, killchild); | |
184 | signal(SIGHUP, killchild); | |
3c0ef626 | 185 | return 0; |
186 | } | |
187 | ||
188 | typedef struct { | |
473db5ab | 189 | size_t cnt; |
3c0ef626 | 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 | |
473db5ab | 217 | main(int argc, char **argv) |
3c0ef626 | 218 | { |
473db5ab | 219 | int ch, fflag, tflag, status; |
220 | double speed; | |
221 | char *targ, *endp; | |
3c0ef626 | 222 | extern char *optarg; |
223 | extern int optind; | |
224 | ||
473db5ab | 225 | __progname = ssh_get_progname(argv[0]); |
3c0ef626 | 226 | |
227 | args.list = NULL; | |
473db5ab | 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; | |
473db5ab | 234 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246zS:o:F:w:")) != -1) |
3c0ef626 | 235 | switch (ch) { |
236 | /* User-visible flags. */ | |
473db5ab | 237 | case '1': |
238 | case '2': | |
3c0ef626 | 239 | case '4': |
240 | case '6': | |
241 | case 'C': | |
473db5ab | 242 | case 'z': |
3c0ef626 | 243 | addargs(&args, "-%c", ch); |
244 | break; | |
245 | case 'o': | |
246 | case 'c': | |
247 | case 'i': | |
248 | case 'F': | |
249 | addargs(&args, "-%c%s", ch, optarg); | |
250 | break; | |
251 | case 'P': | |
252 | addargs(&args, "-p%s", optarg); | |
253 | break; | |
254 | case 'B': | |
255 | addargs(&args, "-oBatchmode yes"); | |
256 | break; | |
473db5ab | 257 | case 'l': |
258 | speed = strtod(optarg, &endp); | |
259 | if (speed <= 0 || *endp != '\0') | |
260 | usage(); | |
261 | limit_rate = speed * 1024; | |
262 | break; | |
3c0ef626 | 263 | case 'p': |
264 | pflag = 1; | |
265 | break; | |
266 | case 'r': | |
267 | iamrecursive = 1; | |
268 | break; | |
269 | case 'S': | |
270 | ssh_program = xstrdup(optarg); | |
271 | break; | |
272 | case 'v': | |
273 | addargs(&args, "-v"); | |
274 | verbose_mode = 1; | |
275 | break; | |
276 | case 'q': | |
473db5ab | 277 | addargs(&args, "-q"); |
3c0ef626 | 278 | showprogress = 0; |
279 | break; | |
280 | ||
281 | /* Server options. */ | |
282 | case 'd': | |
283 | targetshouldbedirectory = 1; | |
284 | break; | |
285 | case 'f': /* "from" */ | |
286 | iamremote = 1; | |
287 | fflag = 1; | |
288 | break; | |
289 | case 't': /* "to" */ | |
290 | iamremote = 1; | |
291 | tflag = 1; | |
292 | #ifdef HAVE_CYGWIN | |
293 | setmode(0, O_BINARY); | |
294 | #endif | |
295 | break; | |
473db5ab | 296 | case 'w': |
297 | addargs(&args, "-w%s", optarg); | |
298 | break; | |
3c0ef626 | 299 | default: |
300 | usage(); | |
301 | } | |
302 | argc -= optind; | |
303 | argv += optind; | |
304 | ||
305 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
473db5ab | 306 | fatal("unknown user %u", (u_int) userid); |
3c0ef626 | 307 | |
308 | if (!isatty(STDERR_FILENO)) | |
309 | showprogress = 0; | |
310 | ||
311 | remin = STDIN_FILENO; | |
312 | remout = STDOUT_FILENO; | |
313 | ||
314 | if (fflag) { | |
315 | /* Follow "protocol", send data. */ | |
316 | (void) response(); | |
317 | source(argc, argv); | |
318 | exit(errs != 0); | |
319 | } | |
320 | if (tflag) { | |
321 | /* Receive data. */ | |
322 | sink(argc, argv); | |
323 | exit(errs != 0); | |
324 | } | |
325 | if (argc < 2) | |
326 | usage(); | |
327 | if (argc > 2) | |
328 | targetshouldbedirectory = 1; | |
329 | ||
330 | remin = remout = -1; | |
473db5ab | 331 | do_cmd_pid = -1; |
3c0ef626 | 332 | /* Command to be executed on remote system using "ssh". */ |
333 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
334 | verbose_mode ? " -v" : "", | |
335 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
336 | targetshouldbedirectory ? " -d" : ""); | |
337 | ||
338 | (void) signal(SIGPIPE, lostconn); | |
339 | ||
340 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
341 | toremote(targ, argc, argv); | |
342 | else { | |
343 | tolocal(argc, argv); /* Dest is local host. */ | |
344 | if (targetshouldbedirectory) | |
345 | verifydir(argv[argc - 1]); | |
346 | } | |
473db5ab | 347 | /* |
348 | * Finally check the exit status of the ssh process, if one was forked | |
349 | * and no error has occured yet | |
350 | */ | |
351 | if (do_cmd_pid != -1 && errs == 0) { | |
352 | if (remin != -1) | |
353 | (void) close(remin); | |
354 | if (remout != -1) | |
355 | (void) close(remout); | |
356 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
357 | errs = 1; | |
358 | else { | |
359 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
360 | errs = 1; | |
361 | } | |
362 | } | |
3c0ef626 | 363 | exit(errs != 0); |
364 | } | |
365 | ||
366 | void | |
473db5ab | 367 | toremote(char *targ, int argc, char **argv) |
3c0ef626 | 368 | { |
369 | int i, len; | |
473db5ab | 370 | char *bp, *host, *src, *suser, *thost, *tuser, *arg; |
3c0ef626 | 371 | |
372 | *targ++ = 0; | |
373 | if (*targ == 0) | |
374 | targ = "."; | |
375 | ||
473db5ab | 376 | arg = xstrdup(argv[argc - 1]); |
377 | if ((thost = strrchr(arg, '@'))) { | |
3c0ef626 | 378 | /* user@host */ |
379 | *thost++ = 0; | |
473db5ab | 380 | tuser = arg; |
3c0ef626 | 381 | if (*tuser == '\0') |
382 | tuser = NULL; | |
3c0ef626 | 383 | } else { |
473db5ab | 384 | thost = arg; |
3c0ef626 | 385 | tuser = NULL; |
386 | } | |
387 | ||
388 | for (i = 0; i < argc - 1; i++) { | |
389 | src = colon(argv[i]); | |
390 | if (src) { /* remote to remote */ | |
391 | static char *ssh_options = | |
473db5ab | 392 | "-x -o'ClearAllForwardings yes'"; |
3c0ef626 | 393 | *src++ = 0; |
394 | if (*src == 0) | |
395 | src = "."; | |
473db5ab | 396 | host = strrchr(argv[i], '@'); |
3c0ef626 | 397 | len = strlen(ssh_program) + strlen(argv[i]) + |
398 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
399 | strlen(thost) + strlen(targ) + | |
400 | strlen(ssh_options) + CMDNEEDS + 20; | |
401 | bp = xmalloc(len); | |
402 | if (host) { | |
403 | *host++ = 0; | |
404 | host = cleanhostname(host); | |
405 | suser = argv[i]; | |
406 | if (*suser == '\0') | |
407 | suser = pwd->pw_name; | |
473db5ab | 408 | else if (!okname(suser)) { |
409 | xfree(bp); | |
3c0ef626 | 410 | continue; |
473db5ab | 411 | } |
412 | if (tuser && !okname(tuser)) { | |
413 | xfree(bp); | |
414 | continue; | |
415 | } | |
3c0ef626 | 416 | snprintf(bp, len, |
417 | "%s%s %s -n " | |
418 | "-l %s %s %s %s '%s%s%s:%s'", | |
419 | ssh_program, verbose_mode ? " -v" : "", | |
420 | ssh_options, suser, host, cmd, src, | |
421 | tuser ? tuser : "", tuser ? "@" : "", | |
422 | thost, targ); | |
423 | } else { | |
424 | host = cleanhostname(argv[i]); | |
425 | snprintf(bp, len, | |
426 | "exec %s%s %s -n %s " | |
427 | "%s %s '%s%s%s:%s'", | |
428 | ssh_program, verbose_mode ? " -v" : "", | |
429 | ssh_options, host, cmd, src, | |
430 | tuser ? tuser : "", tuser ? "@" : "", | |
431 | thost, targ); | |
432 | } | |
433 | if (verbose_mode) | |
434 | fprintf(stderr, "Executing: %s\n", bp); | |
473db5ab | 435 | if (system(bp) != 0) |
436 | errs = 1; | |
3c0ef626 | 437 | (void) xfree(bp); |
438 | } else { /* local to remote */ | |
439 | if (remin == -1) { | |
440 | len = strlen(targ) + CMDNEEDS + 20; | |
441 | bp = xmalloc(len); | |
442 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
443 | host = cleanhostname(thost); | |
444 | if (do_cmd(host, tuser, bp, &remin, | |
445 | &remout, argc) < 0) | |
446 | exit(1); | |
447 | if (response() < 0) | |
448 | exit(1); | |
449 | (void) xfree(bp); | |
450 | } | |
451 | source(1, argv + i); | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
456 | void | |
473db5ab | 457 | tolocal(int argc, char **argv) |
3c0ef626 | 458 | { |
459 | int i, len; | |
460 | char *bp, *host, *src, *suser; | |
461 | ||
462 | for (i = 0; i < argc - 1; i++) { | |
463 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
464 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
465 | strlen(argv[argc - 1]) + 20; | |
466 | bp = xmalloc(len); | |
467 | (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, | |
468 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
469 | argv[i], argv[argc - 1]); | |
470 | if (verbose_mode) | |
471 | fprintf(stderr, "Executing: %s\n", bp); | |
472 | if (system(bp)) | |
473 | ++errs; | |
474 | (void) xfree(bp); | |
475 | continue; | |
476 | } | |
477 | *src++ = 0; | |
478 | if (*src == 0) | |
479 | src = "."; | |
473db5ab | 480 | if ((host = strrchr(argv[i], '@')) == NULL) { |
3c0ef626 | 481 | host = argv[i]; |
482 | suser = NULL; | |
483 | } else { | |
484 | *host++ = 0; | |
485 | suser = argv[i]; | |
486 | if (*suser == '\0') | |
487 | suser = pwd->pw_name; | |
3c0ef626 | 488 | } |
489 | host = cleanhostname(host); | |
490 | len = strlen(src) + CMDNEEDS + 20; | |
491 | bp = xmalloc(len); | |
492 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
493 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
494 | (void) xfree(bp); | |
495 | ++errs; | |
496 | continue; | |
497 | } | |
498 | xfree(bp); | |
499 | sink(1, argv + argc - 1); | |
500 | (void) close(remin); | |
501 | remin = remout = -1; | |
502 | } | |
503 | } | |
504 | ||
505 | void | |
473db5ab | 506 | source(int argc, char **argv) |
3c0ef626 | 507 | { |
508 | struct stat stb; | |
509 | static BUF buffer; | |
510 | BUF *bp; | |
473db5ab | 511 | off_t i, amt, statbytes; |
512 | size_t result; | |
513 | int fd = -1, haderr, indx; | |
514 | char *last, *name, buf[16384]; | |
3c0ef626 | 515 | int len; |
516 | ||
517 | for (indx = 0; indx < argc; ++indx) { | |
518 | name = argv[indx]; | |
519 | statbytes = 0; | |
520 | len = strlen(name); | |
521 | while (len > 1 && name[len-1] == '/') | |
522 | name[--len] = '\0'; | |
523 | if (strchr(name, '\n') != NULL) { | |
524 | run_err("%s: skipping, filename contains a newline", | |
525 | name); | |
526 | goto next; | |
527 | } | |
528 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
529 | goto syserr; | |
530 | if (fstat(fd, &stb) < 0) { | |
531 | syserr: run_err("%s: %s", name, strerror(errno)); | |
532 | goto next; | |
533 | } | |
534 | switch (stb.st_mode & S_IFMT) { | |
535 | case S_IFREG: | |
536 | break; | |
537 | case S_IFDIR: | |
538 | if (iamrecursive) { | |
539 | rsource(name, &stb); | |
540 | goto next; | |
541 | } | |
542 | /* FALLTHROUGH */ | |
543 | default: | |
544 | run_err("%s: not a regular file", name); | |
545 | goto next; | |
546 | } | |
547 | if ((last = strrchr(name, '/')) == NULL) | |
548 | last = name; | |
549 | else | |
550 | ++last; | |
551 | curfile = last; | |
552 | if (pflag) { | |
553 | /* | |
554 | * Make it compatible with possible future | |
555 | * versions expecting microseconds. | |
556 | */ | |
557 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
558 | (u_long) stb.st_mtime, | |
559 | (u_long) stb.st_atime); | |
473db5ab | 560 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 561 | if (response() < 0) |
562 | goto next; | |
563 | } | |
564 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
3c0ef626 | 565 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
566 | (u_int) (stb.st_mode & FILEMODEMASK), | |
473db5ab | 567 | (int64_t)stb.st_size, last); |
3c0ef626 | 568 | if (verbose_mode) { |
569 | fprintf(stderr, "Sending file modes: %s", buf); | |
3c0ef626 | 570 | } |
473db5ab | 571 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 572 | if (response() < 0) |
573 | goto next; | |
473db5ab | 574 | /* this change decreases the number of read/write syscalls*/ |
575 | /* when scp acts as data source. this is the critical change*/ | |
576 | /* buf can actually remain at 2k but increasing both to 16k*/ | |
577 | /* seemed to make sense*/ | |
578 | if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) { | |
3c0ef626 | 579 | next: (void) close(fd); |
580 | continue; | |
581 | } | |
473db5ab | 582 | if (showprogress) |
583 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
3c0ef626 | 584 | /* Keep writing after an error so that we stay sync'd up. */ |
585 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
586 | amt = bp->cnt; | |
587 | if (i + amt > stb.st_size) | |
588 | amt = stb.st_size - i; | |
589 | if (!haderr) { | |
590 | result = atomicio(read, fd, bp->buf, amt); | |
591 | if (result != amt) | |
473db5ab | 592 | haderr = errno; |
3c0ef626 | 593 | } |
594 | if (haderr) | |
473db5ab | 595 | (void) atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 596 | else { |
473db5ab | 597 | result = atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 598 | if (result != amt) |
473db5ab | 599 | haderr = errno; |
3c0ef626 | 600 | statbytes += result; |
601 | } | |
473db5ab | 602 | if (limit_rate) |
603 | bwlimit(amt); | |
3c0ef626 | 604 | } |
605 | if (showprogress) | |
473db5ab | 606 | stop_progress_meter(); |
3c0ef626 | 607 | |
608 | if (close(fd) < 0 && !haderr) | |
609 | haderr = errno; | |
610 | if (!haderr) | |
473db5ab | 611 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 612 | else |
613 | run_err("%s: %s", name, strerror(haderr)); | |
614 | (void) response(); | |
615 | } | |
616 | } | |
617 | ||
618 | void | |
473db5ab | 619 | rsource(char *name, struct stat *statp) |
3c0ef626 | 620 | { |
621 | DIR *dirp; | |
622 | struct dirent *dp; | |
623 | char *last, *vect[1], path[1100]; | |
624 | ||
625 | if (!(dirp = opendir(name))) { | |
626 | run_err("%s: %s", name, strerror(errno)); | |
627 | return; | |
628 | } | |
629 | last = strrchr(name, '/'); | |
630 | if (last == 0) | |
631 | last = name; | |
632 | else | |
633 | last++; | |
634 | if (pflag) { | |
635 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
636 | (u_long) statp->st_mtime, | |
637 | (u_long) statp->st_atime); | |
473db5ab | 638 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 639 | if (response() < 0) { |
640 | closedir(dirp); | |
641 | return; | |
642 | } | |
643 | } | |
644 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
645 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
646 | if (verbose_mode) | |
647 | fprintf(stderr, "Entering directory: %s", path); | |
473db5ab | 648 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 649 | if (response() < 0) { |
650 | closedir(dirp); | |
651 | return; | |
652 | } | |
653 | while ((dp = readdir(dirp)) != NULL) { | |
654 | if (dp->d_ino == 0) | |
655 | continue; | |
656 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
657 | continue; | |
658 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
659 | run_err("%s/%s: name too long", name, dp->d_name); | |
660 | continue; | |
661 | } | |
662 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
663 | vect[0] = path; | |
664 | source(1, vect); | |
665 | } | |
666 | (void) closedir(dirp); | |
473db5ab | 667 | (void) atomicio(vwrite, remout, "E\n", 2); |
3c0ef626 | 668 | (void) response(); |
669 | } | |
670 | ||
671 | void | |
473db5ab | 672 | bwlimit(int amount) |
673 | { | |
674 | static struct timeval bwstart, bwend; | |
675 | static int lamt, thresh = 16384; | |
676 | u_int64_t waitlen; | |
677 | struct timespec ts, rm; | |
678 | ||
679 | if (!timerisset(&bwstart)) { | |
680 | gettimeofday(&bwstart, NULL); | |
681 | return; | |
682 | } | |
683 | ||
684 | lamt += amount; | |
685 | if (lamt < thresh) | |
686 | return; | |
687 | ||
688 | gettimeofday(&bwend, NULL); | |
689 | timersub(&bwend, &bwstart, &bwend); | |
690 | if (!timerisset(&bwend)) | |
691 | return; | |
692 | ||
693 | lamt *= 8; | |
694 | waitlen = (double)1000000L * lamt / limit_rate; | |
695 | ||
696 | bwstart.tv_sec = waitlen / 1000000L; | |
697 | bwstart.tv_usec = waitlen % 1000000L; | |
698 | ||
699 | if (timercmp(&bwstart, &bwend, >)) { | |
700 | timersub(&bwstart, &bwend, &bwend); | |
701 | ||
702 | /* Adjust the wait time */ | |
703 | if (bwend.tv_sec) { | |
704 | thresh /= 2; | |
705 | if (thresh < 2048) | |
706 | thresh = 2048; | |
707 | } else if (bwend.tv_usec < 100) { | |
708 | thresh *= 2; | |
709 | if (thresh > 32768) | |
710 | thresh = 32768; | |
711 | } | |
712 | ||
713 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
714 | while (nanosleep(&ts, &rm) == -1) { | |
715 | if (errno != EINTR) | |
716 | break; | |
717 | ts = rm; | |
718 | } | |
719 | } | |
720 | ||
721 | lamt = 0; | |
722 | gettimeofday(&bwstart, NULL); | |
723 | } | |
724 | ||
725 | void | |
726 | sink(int argc, char **argv) | |
3c0ef626 | 727 | { |
728 | static BUF buffer; | |
729 | struct stat stb; | |
730 | enum { | |
731 | YES, NO, DISPLAYED | |
732 | } wrerr; | |
733 | BUF *bp; | |
473db5ab | 734 | off_t i; |
735 | size_t j, count; | |
736 | int amt, exists, first, mask, mode, ofd, omode; | |
737 | off_t size, statbytes; | |
3c0ef626 | 738 | int setimes, targisdir, wrerrno = 0; |
473db5ab | 739 | char ch, *cp, *np, *targ, *why, *vect[1], buf[16384]; |
3c0ef626 | 740 | struct timeval tv[2]; |
741 | ||
742 | #define atime tv[0] | |
743 | #define mtime tv[1] | |
473db5ab | 744 | #define SCREWUP(str) { why = str; goto screwup; } |
3c0ef626 | 745 | |
746 | setimes = targisdir = 0; | |
747 | mask = umask(0); | |
748 | if (!pflag) | |
749 | (void) umask(mask); | |
750 | if (argc != 1) { | |
751 | run_err("ambiguous target"); | |
752 | exit(1); | |
753 | } | |
754 | targ = *argv; | |
755 | if (targetshouldbedirectory) | |
756 | verifydir(targ); | |
757 | ||
473db5ab | 758 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 759 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) |
760 | targisdir = 1; | |
761 | for (first = 1;; first = 0) { | |
762 | cp = buf; | |
473db5ab | 763 | if (atomicio(read, remin, cp, 1) != 1) |
3c0ef626 | 764 | return; |
765 | if (*cp++ == '\n') | |
766 | SCREWUP("unexpected <newline>"); | |
767 | do { | |
768 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
769 | SCREWUP("lost connection"); | |
770 | *cp++ = ch; | |
771 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
772 | *cp = 0; | |
473db5ab | 773 | if (verbose_mode) |
774 | fprintf(stderr, "Sink: %s", buf); | |
3c0ef626 | 775 | |
776 | if (buf[0] == '\01' || buf[0] == '\02') { | |
777 | if (iamremote == 0) | |
473db5ab | 778 | (void) atomicio(vwrite, STDERR_FILENO, |
3c0ef626 | 779 | buf + 1, strlen(buf + 1)); |
780 | if (buf[0] == '\02') | |
781 | exit(1); | |
782 | ++errs; | |
783 | continue; | |
784 | } | |
785 | if (buf[0] == 'E') { | |
473db5ab | 786 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 787 | return; |
788 | } | |
789 | if (ch == '\n') | |
790 | *--cp = 0; | |
791 | ||
792 | cp = buf; | |
793 | if (*cp == 'T') { | |
794 | setimes++; | |
795 | cp++; | |
796 | mtime.tv_sec = strtol(cp, &cp, 10); | |
797 | if (!cp || *cp++ != ' ') | |
798 | SCREWUP("mtime.sec not delimited"); | |
799 | mtime.tv_usec = strtol(cp, &cp, 10); | |
800 | if (!cp || *cp++ != ' ') | |
801 | SCREWUP("mtime.usec not delimited"); | |
802 | atime.tv_sec = strtol(cp, &cp, 10); | |
803 | if (!cp || *cp++ != ' ') | |
804 | SCREWUP("atime.sec not delimited"); | |
805 | atime.tv_usec = strtol(cp, &cp, 10); | |
806 | if (!cp || *cp++ != '\0') | |
807 | SCREWUP("atime.usec not delimited"); | |
473db5ab | 808 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 809 | continue; |
810 | } | |
811 | if (*cp != 'C' && *cp != 'D') { | |
812 | /* | |
813 | * Check for the case "rcp remote:foo\* local:bar". | |
814 | * In this case, the line "No match." can be returned | |
815 | * by the shell before the rcp command on the remote is | |
816 | * executed so the ^Aerror_message convention isn't | |
817 | * followed. | |
818 | */ | |
819 | if (first) { | |
820 | run_err("%s", cp); | |
821 | exit(1); | |
822 | } | |
823 | SCREWUP("expected control record"); | |
824 | } | |
825 | mode = 0; | |
826 | for (++cp; cp < buf + 5; cp++) { | |
827 | if (*cp < '0' || *cp > '7') | |
828 | SCREWUP("bad mode"); | |
829 | mode = (mode << 3) | (*cp - '0'); | |
830 | } | |
831 | if (*cp++ != ' ') | |
832 | SCREWUP("mode not delimited"); | |
833 | ||
834 | for (size = 0; isdigit(*cp);) | |
835 | size = size * 10 + (*cp++ - '0'); | |
836 | if (*cp++ != ' ') | |
837 | SCREWUP("size not delimited"); | |
473db5ab | 838 | if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { |
839 | run_err("error: unexpected filename: %s", cp); | |
840 | exit(1); | |
841 | } | |
3c0ef626 | 842 | if (targisdir) { |
843 | static char *namebuf; | |
473db5ab | 844 | static size_t cursize; |
3c0ef626 | 845 | size_t need; |
846 | ||
847 | need = strlen(targ) + strlen(cp) + 250; | |
848 | if (need > cursize) { | |
849 | if (namebuf) | |
850 | xfree(namebuf); | |
851 | namebuf = xmalloc(need); | |
852 | cursize = need; | |
853 | } | |
854 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
473db5ab | 855 | strcmp(targ, "/") ? "/" : "", cp); |
3c0ef626 | 856 | np = namebuf; |
857 | } else | |
858 | np = targ; | |
859 | curfile = cp; | |
860 | exists = stat(np, &stb) == 0; | |
861 | if (buf[0] == 'D') { | |
862 | int mod_flag = pflag; | |
473db5ab | 863 | if (!iamrecursive) |
864 | SCREWUP("received directory without -r"); | |
3c0ef626 | 865 | if (exists) { |
866 | if (!S_ISDIR(stb.st_mode)) { | |
867 | errno = ENOTDIR; | |
868 | goto bad; | |
869 | } | |
870 | if (pflag) | |
871 | (void) chmod(np, mode); | |
872 | } else { | |
873 | /* Handle copying from a read-only | |
874 | directory */ | |
875 | mod_flag = 1; | |
876 | if (mkdir(np, mode | S_IRWXU) < 0) | |
877 | goto bad; | |
878 | } | |
879 | vect[0] = xstrdup(np); | |
880 | sink(1, vect); | |
881 | if (setimes) { | |
882 | setimes = 0; | |
883 | if (utimes(vect[0], tv) < 0) | |
884 | run_err("%s: set times: %s", | |
885 | vect[0], strerror(errno)); | |
886 | } | |
887 | if (mod_flag) | |
888 | (void) chmod(vect[0], mode); | |
889 | if (vect[0]) | |
890 | xfree(vect[0]); | |
891 | continue; | |
892 | } | |
893 | omode = mode; | |
894 | mode |= S_IWRITE; | |
895 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
896 | bad: run_err("%s: %s", np, strerror(errno)); | |
897 | continue; | |
898 | } | |
473db5ab | 899 | (void) atomicio(vwrite, remout, "", 1); |
900 | if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) { | |
3c0ef626 | 901 | (void) close(ofd); |
902 | continue; | |
903 | } | |
904 | cp = bp->buf; | |
905 | wrerr = NO; | |
906 | ||
3c0ef626 | 907 | statbytes = 0; |
473db5ab | 908 | if (showprogress) |
909 | start_progress_meter(curfile, size, &statbytes); | |
910 | for (count = i = 0; i < size; i += sizeof(buf)) { | |
911 | amt = sizeof(buf); | |
3c0ef626 | 912 | if (i + amt > size) |
913 | amt = size - i; | |
914 | count += amt; | |
915 | do { | |
473db5ab | 916 | j = atomicio(read, remin, cp, amt); |
917 | if (j == 0) { | |
3c0ef626 | 918 | run_err("%s", j ? strerror(errno) : |
919 | "dropped connection"); | |
920 | exit(1); | |
921 | } | |
922 | amt -= j; | |
923 | cp += j; | |
924 | statbytes += j; | |
925 | } while (amt > 0); | |
473db5ab | 926 | |
927 | if (limit_rate) | |
928 | bwlimit(sizeof(buf)); | |
929 | ||
3c0ef626 | 930 | if (count == bp->cnt) { |
931 | /* Keep reading so we stay sync'd up. */ | |
932 | if (wrerr == NO) { | |
473db5ab | 933 | if (atomicio(vwrite, ofd, bp->buf, |
934 | count) != count) { | |
3c0ef626 | 935 | wrerr = YES; |
473db5ab | 936 | wrerrno = errno; |
3c0ef626 | 937 | } |
938 | } | |
939 | count = 0; | |
940 | cp = bp->buf; | |
941 | } | |
942 | } | |
943 | if (showprogress) | |
473db5ab | 944 | stop_progress_meter(); |
3c0ef626 | 945 | if (count != 0 && wrerr == NO && |
473db5ab | 946 | atomicio(vwrite, ofd, bp->buf, count) != count) { |
3c0ef626 | 947 | wrerr = YES; |
473db5ab | 948 | wrerrno = errno; |
3c0ef626 | 949 | } |
473db5ab | 950 | if (wrerr == NO && ftruncate(ofd, size) != 0) { |
3c0ef626 | 951 | run_err("%s: truncate: %s", np, strerror(errno)); |
952 | wrerr = DISPLAYED; | |
953 | } | |
954 | if (pflag) { | |
955 | if (exists || omode != mode) | |
956 | #ifdef HAVE_FCHMOD | |
473db5ab | 957 | if (fchmod(ofd, omode)) { |
3c0ef626 | 958 | #else /* HAVE_FCHMOD */ |
473db5ab | 959 | if (chmod(np, omode)) { |
3c0ef626 | 960 | #endif /* HAVE_FCHMOD */ |
961 | run_err("%s: set mode: %s", | |
962 | np, strerror(errno)); | |
473db5ab | 963 | wrerr = DISPLAYED; |
964 | } | |
3c0ef626 | 965 | } else { |
966 | if (!exists && omode != mode) | |
967 | #ifdef HAVE_FCHMOD | |
473db5ab | 968 | if (fchmod(ofd, omode & ~mask)) { |
3c0ef626 | 969 | #else /* HAVE_FCHMOD */ |
473db5ab | 970 | if (chmod(np, omode & ~mask)) { |
3c0ef626 | 971 | #endif /* HAVE_FCHMOD */ |
972 | run_err("%s: set mode: %s", | |
973 | np, strerror(errno)); | |
473db5ab | 974 | wrerr = DISPLAYED; |
975 | } | |
3c0ef626 | 976 | } |
977 | if (close(ofd) == -1) { | |
978 | wrerr = YES; | |
979 | wrerrno = errno; | |
980 | } | |
981 | (void) response(); | |
982 | if (setimes && wrerr == NO) { | |
983 | setimes = 0; | |
984 | if (utimes(np, tv) < 0) { | |
985 | run_err("%s: set times: %s", | |
986 | np, strerror(errno)); | |
987 | wrerr = DISPLAYED; | |
988 | } | |
989 | } | |
990 | switch (wrerr) { | |
991 | case YES: | |
992 | run_err("%s: %s", np, strerror(wrerrno)); | |
993 | break; | |
994 | case NO: | |
473db5ab | 995 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 996 | break; |
997 | case DISPLAYED: | |
998 | break; | |
999 | } | |
1000 | } | |
1001 | screwup: | |
1002 | run_err("protocol error: %s", why); | |
1003 | exit(1); | |
1004 | } | |
1005 | ||
1006 | int | |
473db5ab | 1007 | response(void) |
3c0ef626 | 1008 | { |
1009 | char ch, *cp, resp, rbuf[2048]; | |
1010 | ||
1011 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
1012 | lostconn(0); | |
1013 | ||
1014 | cp = rbuf; | |
1015 | switch (resp) { | |
1016 | case 0: /* ok */ | |
1017 | return (0); | |
1018 | default: | |
1019 | *cp++ = resp; | |
1020 | /* FALLTHROUGH */ | |
1021 | case 1: /* error, followed by error msg */ | |
1022 | case 2: /* fatal error, "" */ | |
1023 | do { | |
1024 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1025 | lostconn(0); | |
1026 | *cp++ = ch; | |
1027 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1028 | ||
1029 | if (!iamremote) | |
473db5ab | 1030 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); |
3c0ef626 | 1031 | ++errs; |
1032 | if (resp == 1) | |
1033 | return (-1); | |
1034 | exit(1); | |
1035 | } | |
1036 | /* NOTREACHED */ | |
1037 | } | |
1038 | ||
1039 | void | |
473db5ab | 1040 | usage(void) |
3c0ef626 | 1041 | { |
1042 | (void) fprintf(stderr, | |
473db5ab | 1043 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" |
1044 | " [-l limit] [-o ssh_option] [-P port] [-w buffer size] [-S program]\n" | |
1045 | " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); | |
3c0ef626 | 1046 | exit(1); |
1047 | } | |
1048 | ||
1049 | void | |
1050 | run_err(const char *fmt,...) | |
1051 | { | |
1052 | static FILE *fp; | |
1053 | va_list ap; | |
1054 | ||
1055 | ++errs; | |
1056 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
1057 | return; | |
1058 | (void) fprintf(fp, "%c", 0x01); | |
1059 | (void) fprintf(fp, "scp: "); | |
1060 | va_start(ap, fmt); | |
1061 | (void) vfprintf(fp, fmt, ap); | |
1062 | va_end(ap); | |
1063 | (void) fprintf(fp, "\n"); | |
1064 | (void) fflush(fp); | |
1065 | ||
1066 | if (!iamremote) { | |
1067 | va_start(ap, fmt); | |
1068 | vfprintf(stderr, fmt, ap); | |
1069 | va_end(ap); | |
1070 | fprintf(stderr, "\n"); | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | void | |
473db5ab | 1075 | verifydir(char *cp) |
3c0ef626 | 1076 | { |
1077 | struct stat stb; | |
1078 | ||
1079 | if (!stat(cp, &stb)) { | |
1080 | if (S_ISDIR(stb.st_mode)) | |
1081 | return; | |
1082 | errno = ENOTDIR; | |
1083 | } | |
1084 | run_err("%s: %s", cp, strerror(errno)); | |
473db5ab | 1085 | killchild(0); |
3c0ef626 | 1086 | } |
1087 | ||
1088 | int | |
473db5ab | 1089 | okname(char *cp0) |
3c0ef626 | 1090 | { |
1091 | int c; | |
1092 | char *cp; | |
1093 | ||
1094 | cp = cp0; | |
1095 | do { | |
1096 | c = (int)*cp; | |
1097 | if (c & 0200) | |
1098 | goto bad; | |
473db5ab | 1099 | if (!isalpha(c) && !isdigit(c)) { |
1100 | switch (c) { | |
1101 | case '\'': | |
1102 | case '"': | |
1103 | case '`': | |
1104 | case ' ': | |
1105 | case '#': | |
1106 | goto bad; | |
1107 | default: | |
1108 | break; | |
1109 | } | |
1110 | } | |
3c0ef626 | 1111 | } while (*++cp); |
1112 | return (1); | |
1113 | ||
1114 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1115 | return (0); | |
1116 | } | |
1117 | ||
1118 | BUF * | |
473db5ab | 1119 | allocbuf(BUF *bp, int fd, int blksize) |
3c0ef626 | 1120 | { |
1121 | size_t size; | |
1122 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1123 | struct stat stb; | |
1124 | ||
1125 | if (fstat(fd, &stb) < 0) { | |
1126 | run_err("fstat: %s", strerror(errno)); | |
1127 | return (0); | |
1128 | } | |
473db5ab | 1129 | size = roundup(stb.st_blksize, blksize); |
1130 | if (size == 0) | |
3c0ef626 | 1131 | size = blksize; |
3c0ef626 | 1132 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
1133 | size = blksize; | |
1134 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1135 | if (bp->cnt >= size) | |
1136 | return (bp); | |
1137 | if (bp->buf == NULL) | |
1138 | bp->buf = xmalloc(size); | |
1139 | else | |
1140 | bp->buf = xrealloc(bp->buf, size); | |
1141 | memset(bp->buf, 0, size); | |
1142 | bp->cnt = size; | |
1143 | return (bp); | |
1144 | } | |
1145 | ||
1146 | void | |
473db5ab | 1147 | lostconn(int signo) |
3c0ef626 | 1148 | { |
1149 | if (!iamremote) | |
1150 | write(STDERR_FILENO, "lost connection\n", 16); | |
1151 | if (signo) | |
1152 | _exit(1); | |
1153 | else | |
1154 | exit(1); | |
1155 | } |