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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" | |
996d5e62 | 74 | RCSID("$OpenBSD: scp.c,v 1.119 2005/01/24 10:22:06 dtucker 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 | |
3c0ef626 | 83 | extern char *__progname; |
3c0ef626 | 84 | |
6a9b3198 | 85 | void bwlimit(int); |
3c0ef626 | 86 | |
87 | /* Struct for addargs */ | |
88 | arglist args; | |
89 | ||
6a9b3198 | 90 | /* Bandwidth limit */ |
cdd66111 | 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 | ||
6a9b3198 | 105 | /* This is used to store the pid of ssh_program */ |
0fff78ff | 106 | pid_t do_cmd_pid = -1; |
107 | ||
108 | static void | |
109 | killchild(int signo) | |
110 | { | |
996d5e62 | 111 | if (do_cmd_pid > 1) { |
0fff78ff | 112 | kill(do_cmd_pid, signo); |
996d5e62 | 113 | waitpid(do_cmd_pid, NULL, 0); |
114 | } | |
0fff78ff | 115 | |
116 | _exit(1); | |
117 | } | |
6a9b3198 | 118 | |
3c0ef626 | 119 | /* |
120 | * This function executes the given command as the specified user on the | |
121 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
122 | * assigns the input and output file descriptors on success. | |
123 | */ | |
124 | ||
125 | int | |
126 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc) | |
127 | { | |
128 | int pin[2], pout[2], reserved[2]; | |
129 | ||
130 | if (verbose_mode) | |
131 | fprintf(stderr, | |
132 | "Executing: program %s host %s, user %s, command %s\n", | |
133 | ssh_program, host, | |
134 | remuser ? remuser : "(unspecified)", cmd); | |
135 | ||
136 | /* | |
137 | * Reserve two descriptors so that the real pipes won't get | |
138 | * descriptors 0 and 1 because that will screw up dup2 below. | |
139 | */ | |
140 | pipe(reserved); | |
141 | ||
142 | /* Create a socket pair for communicating with ssh. */ | |
143 | if (pipe(pin) < 0) | |
144 | fatal("pipe: %s", strerror(errno)); | |
145 | if (pipe(pout) < 0) | |
146 | fatal("pipe: %s", strerror(errno)); | |
147 | ||
148 | /* Free the reserved descriptors. */ | |
149 | close(reserved[0]); | |
150 | close(reserved[1]); | |
151 | ||
0fff78ff | 152 | /* Fork a child to execute the command on the remote host using ssh. */ |
6a9b3198 | 153 | do_cmd_pid = fork(); |
154 | if (do_cmd_pid == 0) { | |
3c0ef626 | 155 | /* Child. */ |
156 | close(pin[1]); | |
157 | close(pout[0]); | |
158 | dup2(pin[0], 0); | |
159 | dup2(pout[1], 1); | |
160 | close(pin[0]); | |
161 | close(pout[1]); | |
162 | ||
163 | args.list[0] = ssh_program; | |
164 | if (remuser != NULL) | |
165 | addargs(&args, "-l%s", remuser); | |
166 | addargs(&args, "%s", host); | |
167 | addargs(&args, "%s", cmd); | |
168 | ||
169 | execvp(ssh_program, args.list); | |
170 | perror(ssh_program); | |
171 | exit(1); | |
6a9b3198 | 172 | } else if (do_cmd_pid == -1) { |
173 | fatal("fork: %s", strerror(errno)); | |
3c0ef626 | 174 | } |
175 | /* Parent. Close the other side, and return the local side. */ | |
176 | close(pin[0]); | |
177 | *fdout = pin[1]; | |
178 | close(pout[1]); | |
179 | *fdin = pout[0]; | |
0fff78ff | 180 | signal(SIGTERM, killchild); |
181 | signal(SIGINT, killchild); | |
182 | signal(SIGHUP, killchild); | |
3c0ef626 | 183 | return 0; |
184 | } | |
185 | ||
186 | typedef struct { | |
187 | int cnt; | |
188 | char *buf; | |
189 | } BUF; | |
190 | ||
191 | BUF *allocbuf(BUF *, int, int); | |
192 | void lostconn(int); | |
193 | void nospace(void); | |
194 | int okname(char *); | |
195 | void run_err(const char *,...); | |
196 | void verifydir(char *); | |
197 | ||
198 | struct passwd *pwd; | |
199 | uid_t userid; | |
200 | int errs, remin, remout; | |
201 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
202 | ||
203 | #define CMDNEEDS 64 | |
204 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
205 | ||
206 | int response(void); | |
207 | void rsource(char *, struct stat *); | |
208 | void sink(int, char *[]); | |
209 | void source(int, char *[]); | |
210 | void tolocal(int, char *[]); | |
211 | void toremote(char *, int, char *[]); | |
212 | void usage(void); | |
213 | ||
214 | int | |
0fff78ff | 215 | main(int argc, char **argv) |
3c0ef626 | 216 | { |
6a9b3198 | 217 | int ch, fflag, tflag, status; |
218 | double speed; | |
219 | char *targ, *endp; | |
3c0ef626 | 220 | extern char *optarg; |
221 | extern int optind; | |
222 | ||
0fff78ff | 223 | __progname = ssh_get_progname(argv[0]); |
3c0ef626 | 224 | |
225 | args.list = NULL; | |
f5799ae1 | 226 | addargs(&args, "ssh"); /* overwritten with ssh_program */ |
3c0ef626 | 227 | addargs(&args, "-x"); |
228 | addargs(&args, "-oForwardAgent no"); | |
3c0ef626 | 229 | addargs(&args, "-oClearAllForwardings yes"); |
230 | ||
231 | fflag = tflag = 0; | |
6a9b3198 | 232 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1) |
3c0ef626 | 233 | switch (ch) { |
234 | /* User-visible flags. */ | |
6a9b3198 | 235 | case '1': |
236 | case '2': | |
3c0ef626 | 237 | case '4': |
238 | case '6': | |
239 | case 'C': | |
240 | addargs(&args, "-%c", ch); | |
241 | break; | |
242 | case 'o': | |
243 | case 'c': | |
244 | case 'i': | |
245 | case 'F': | |
246 | addargs(&args, "-%c%s", ch, optarg); | |
247 | break; | |
248 | case 'P': | |
249 | addargs(&args, "-p%s", optarg); | |
250 | break; | |
251 | case 'B': | |
252 | addargs(&args, "-oBatchmode yes"); | |
253 | break; | |
6a9b3198 | 254 | case 'l': |
255 | speed = strtod(optarg, &endp); | |
256 | if (speed <= 0 || *endp != '\0') | |
257 | usage(); | |
cdd66111 | 258 | limit_rate = speed * 1024; |
6a9b3198 | 259 | break; |
3c0ef626 | 260 | case 'p': |
261 | pflag = 1; | |
262 | break; | |
263 | case 'r': | |
264 | iamrecursive = 1; | |
265 | break; | |
266 | case 'S': | |
267 | ssh_program = xstrdup(optarg); | |
268 | break; | |
269 | case 'v': | |
270 | addargs(&args, "-v"); | |
271 | verbose_mode = 1; | |
272 | break; | |
273 | case 'q': | |
cdd66111 | 274 | addargs(&args, "-q"); |
3c0ef626 | 275 | showprogress = 0; |
276 | break; | |
277 | ||
278 | /* Server options. */ | |
279 | case 'd': | |
280 | targetshouldbedirectory = 1; | |
281 | break; | |
282 | case 'f': /* "from" */ | |
283 | iamremote = 1; | |
284 | fflag = 1; | |
285 | break; | |
286 | case 't': /* "to" */ | |
287 | iamremote = 1; | |
288 | tflag = 1; | |
289 | #ifdef HAVE_CYGWIN | |
290 | setmode(0, O_BINARY); | |
291 | #endif | |
292 | break; | |
293 | default: | |
294 | usage(); | |
295 | } | |
296 | argc -= optind; | |
297 | argv += optind; | |
298 | ||
299 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
0fff78ff | 300 | fatal("unknown user %u", (u_int) userid); |
3c0ef626 | 301 | |
302 | if (!isatty(STDERR_FILENO)) | |
303 | showprogress = 0; | |
304 | ||
305 | remin = STDIN_FILENO; | |
306 | remout = STDOUT_FILENO; | |
307 | ||
308 | if (fflag) { | |
309 | /* Follow "protocol", send data. */ | |
310 | (void) response(); | |
311 | source(argc, argv); | |
312 | exit(errs != 0); | |
313 | } | |
314 | if (tflag) { | |
315 | /* Receive data. */ | |
316 | sink(argc, argv); | |
317 | exit(errs != 0); | |
318 | } | |
319 | if (argc < 2) | |
320 | usage(); | |
321 | if (argc > 2) | |
322 | targetshouldbedirectory = 1; | |
323 | ||
324 | remin = remout = -1; | |
6a9b3198 | 325 | do_cmd_pid = -1; |
3c0ef626 | 326 | /* Command to be executed on remote system using "ssh". */ |
327 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
328 | verbose_mode ? " -v" : "", | |
329 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
330 | targetshouldbedirectory ? " -d" : ""); | |
331 | ||
332 | (void) signal(SIGPIPE, lostconn); | |
333 | ||
334 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
335 | toremote(targ, argc, argv); | |
336 | else { | |
337 | tolocal(argc, argv); /* Dest is local host. */ | |
338 | if (targetshouldbedirectory) | |
339 | verifydir(argv[argc - 1]); | |
340 | } | |
6a9b3198 | 341 | /* |
342 | * Finally check the exit status of the ssh process, if one was forked | |
343 | * and no error has occured yet | |
344 | */ | |
345 | if (do_cmd_pid != -1 && errs == 0) { | |
346 | if (remin != -1) | |
347 | (void) close(remin); | |
348 | if (remout != -1) | |
349 | (void) close(remout); | |
350 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
351 | errs = 1; | |
352 | else { | |
353 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
354 | errs = 1; | |
355 | } | |
356 | } | |
3c0ef626 | 357 | exit(errs != 0); |
358 | } | |
359 | ||
360 | void | |
0fff78ff | 361 | toremote(char *targ, int argc, char **argv) |
3c0ef626 | 362 | { |
363 | int i, len; | |
364 | char *bp, *host, *src, *suser, *thost, *tuser; | |
365 | ||
366 | *targ++ = 0; | |
367 | if (*targ == 0) | |
368 | targ = "."; | |
369 | ||
6a9b3198 | 370 | if ((thost = strrchr(argv[argc - 1], '@'))) { |
3c0ef626 | 371 | /* user@host */ |
372 | *thost++ = 0; | |
373 | tuser = argv[argc - 1]; | |
374 | if (*tuser == '\0') | |
375 | tuser = NULL; | |
3c0ef626 | 376 | } else { |
377 | thost = argv[argc - 1]; | |
378 | tuser = NULL; | |
379 | } | |
380 | ||
381 | for (i = 0; i < argc - 1; i++) { | |
382 | src = colon(argv[i]); | |
383 | if (src) { /* remote to remote */ | |
384 | static char *ssh_options = | |
f5799ae1 | 385 | "-x -o'ClearAllForwardings yes'"; |
3c0ef626 | 386 | *src++ = 0; |
387 | if (*src == 0) | |
388 | src = "."; | |
6a9b3198 | 389 | host = strrchr(argv[i], '@'); |
3c0ef626 | 390 | len = strlen(ssh_program) + strlen(argv[i]) + |
391 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
392 | strlen(thost) + strlen(targ) + | |
393 | strlen(ssh_options) + CMDNEEDS + 20; | |
394 | bp = xmalloc(len); | |
395 | if (host) { | |
396 | *host++ = 0; | |
397 | host = cleanhostname(host); | |
398 | suser = argv[i]; | |
399 | if (*suser == '\0') | |
400 | suser = pwd->pw_name; | |
6a9b3198 | 401 | else if (!okname(suser)) { |
402 | xfree(bp); | |
3c0ef626 | 403 | continue; |
6a9b3198 | 404 | } |
405 | if (tuser && !okname(tuser)) { | |
406 | xfree(bp); | |
407 | continue; | |
408 | } | |
3c0ef626 | 409 | snprintf(bp, len, |
410 | "%s%s %s -n " | |
411 | "-l %s %s %s %s '%s%s%s:%s'", | |
412 | ssh_program, verbose_mode ? " -v" : "", | |
413 | ssh_options, suser, host, cmd, src, | |
414 | tuser ? tuser : "", tuser ? "@" : "", | |
415 | thost, targ); | |
416 | } else { | |
417 | host = cleanhostname(argv[i]); | |
418 | snprintf(bp, len, | |
419 | "exec %s%s %s -n %s " | |
420 | "%s %s '%s%s%s:%s'", | |
421 | ssh_program, verbose_mode ? " -v" : "", | |
422 | ssh_options, host, cmd, src, | |
423 | tuser ? tuser : "", tuser ? "@" : "", | |
424 | thost, targ); | |
425 | } | |
426 | if (verbose_mode) | |
427 | fprintf(stderr, "Executing: %s\n", bp); | |
cdd66111 | 428 | if (system(bp) != 0) |
429 | errs = 1; | |
3c0ef626 | 430 | (void) xfree(bp); |
431 | } else { /* local to remote */ | |
432 | if (remin == -1) { | |
433 | len = strlen(targ) + CMDNEEDS + 20; | |
434 | bp = xmalloc(len); | |
435 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
436 | host = cleanhostname(thost); | |
437 | if (do_cmd(host, tuser, bp, &remin, | |
438 | &remout, argc) < 0) | |
439 | exit(1); | |
440 | if (response() < 0) | |
441 | exit(1); | |
442 | (void) xfree(bp); | |
443 | } | |
444 | source(1, argv + i); | |
445 | } | |
446 | } | |
447 | } | |
448 | ||
449 | void | |
0fff78ff | 450 | tolocal(int argc, char **argv) |
3c0ef626 | 451 | { |
452 | int i, len; | |
453 | char *bp, *host, *src, *suser; | |
454 | ||
455 | for (i = 0; i < argc - 1; i++) { | |
456 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
457 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
458 | strlen(argv[argc - 1]) + 20; | |
459 | bp = xmalloc(len); | |
460 | (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, | |
461 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
462 | argv[i], argv[argc - 1]); | |
463 | if (verbose_mode) | |
464 | fprintf(stderr, "Executing: %s\n", bp); | |
465 | if (system(bp)) | |
466 | ++errs; | |
467 | (void) xfree(bp); | |
468 | continue; | |
469 | } | |
470 | *src++ = 0; | |
471 | if (*src == 0) | |
472 | src = "."; | |
6a9b3198 | 473 | if ((host = strrchr(argv[i], '@')) == NULL) { |
3c0ef626 | 474 | host = argv[i]; |
475 | suser = NULL; | |
476 | } else { | |
477 | *host++ = 0; | |
478 | suser = argv[i]; | |
479 | if (*suser == '\0') | |
480 | suser = pwd->pw_name; | |
3c0ef626 | 481 | } |
482 | host = cleanhostname(host); | |
483 | len = strlen(src) + CMDNEEDS + 20; | |
484 | bp = xmalloc(len); | |
485 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
486 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
487 | (void) xfree(bp); | |
488 | ++errs; | |
489 | continue; | |
490 | } | |
491 | xfree(bp); | |
492 | sink(1, argv + argc - 1); | |
493 | (void) close(remin); | |
494 | remin = remout = -1; | |
495 | } | |
496 | } | |
497 | ||
498 | void | |
0fff78ff | 499 | source(int argc, char **argv) |
3c0ef626 | 500 | { |
501 | struct stat stb; | |
502 | static BUF buffer; | |
503 | BUF *bp; | |
6a9b3198 | 504 | off_t i, amt, result, statbytes; |
3c0ef626 | 505 | int fd, haderr, indx; |
506 | char *last, *name, buf[2048]; | |
507 | int len; | |
508 | ||
509 | for (indx = 0; indx < argc; ++indx) { | |
510 | name = argv[indx]; | |
511 | statbytes = 0; | |
512 | len = strlen(name); | |
513 | while (len > 1 && name[len-1] == '/') | |
514 | name[--len] = '\0'; | |
515 | if (strchr(name, '\n') != NULL) { | |
516 | run_err("%s: skipping, filename contains a newline", | |
517 | name); | |
518 | goto next; | |
519 | } | |
520 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
521 | goto syserr; | |
522 | if (fstat(fd, &stb) < 0) { | |
523 | syserr: run_err("%s: %s", name, strerror(errno)); | |
524 | goto next; | |
525 | } | |
526 | switch (stb.st_mode & S_IFMT) { | |
527 | case S_IFREG: | |
528 | break; | |
529 | case S_IFDIR: | |
530 | if (iamrecursive) { | |
531 | rsource(name, &stb); | |
532 | goto next; | |
533 | } | |
534 | /* FALLTHROUGH */ | |
535 | default: | |
536 | run_err("%s: not a regular file", name); | |
537 | goto next; | |
538 | } | |
539 | if ((last = strrchr(name, '/')) == NULL) | |
540 | last = name; | |
541 | else | |
542 | ++last; | |
543 | curfile = last; | |
544 | if (pflag) { | |
545 | /* | |
546 | * Make it compatible with possible future | |
547 | * versions expecting microseconds. | |
548 | */ | |
549 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
550 | (u_long) stb.st_mtime, | |
551 | (u_long) stb.st_atime); | |
0fff78ff | 552 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 553 | if (response() < 0) |
554 | goto next; | |
555 | } | |
556 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
3c0ef626 | 557 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
558 | (u_int) (stb.st_mode & FILEMODEMASK), | |
0fff78ff | 559 | (int64_t)stb.st_size, last); |
3c0ef626 | 560 | if (verbose_mode) { |
561 | fprintf(stderr, "Sending file modes: %s", buf); | |
3c0ef626 | 562 | } |
0fff78ff | 563 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 564 | if (response() < 0) |
565 | goto next; | |
566 | if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { | |
567 | next: (void) close(fd); | |
568 | continue; | |
569 | } | |
6a9b3198 | 570 | if (showprogress) |
571 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
3c0ef626 | 572 | /* Keep writing after an error so that we stay sync'd up. */ |
573 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
574 | amt = bp->cnt; | |
575 | if (i + amt > stb.st_size) | |
576 | amt = stb.st_size - i; | |
577 | if (!haderr) { | |
578 | result = atomicio(read, fd, bp->buf, amt); | |
579 | if (result != amt) | |
580 | haderr = result >= 0 ? EIO : errno; | |
581 | } | |
582 | if (haderr) | |
0fff78ff | 583 | (void) atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 584 | else { |
0fff78ff | 585 | result = atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 586 | if (result != amt) |
587 | haderr = result >= 0 ? EIO : errno; | |
588 | statbytes += result; | |
589 | } | |
cdd66111 | 590 | if (limit_rate) |
6a9b3198 | 591 | bwlimit(amt); |
3c0ef626 | 592 | } |
593 | if (showprogress) | |
6a9b3198 | 594 | stop_progress_meter(); |
3c0ef626 | 595 | |
596 | if (close(fd) < 0 && !haderr) | |
597 | haderr = errno; | |
598 | if (!haderr) | |
0fff78ff | 599 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 600 | else |
601 | run_err("%s: %s", name, strerror(haderr)); | |
602 | (void) response(); | |
603 | } | |
604 | } | |
605 | ||
606 | void | |
0fff78ff | 607 | rsource(char *name, struct stat *statp) |
3c0ef626 | 608 | { |
609 | DIR *dirp; | |
610 | struct dirent *dp; | |
611 | char *last, *vect[1], path[1100]; | |
612 | ||
613 | if (!(dirp = opendir(name))) { | |
614 | run_err("%s: %s", name, strerror(errno)); | |
615 | return; | |
616 | } | |
617 | last = strrchr(name, '/'); | |
618 | if (last == 0) | |
619 | last = name; | |
620 | else | |
621 | last++; | |
622 | if (pflag) { | |
623 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
624 | (u_long) statp->st_mtime, | |
625 | (u_long) statp->st_atime); | |
0fff78ff | 626 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 627 | if (response() < 0) { |
628 | closedir(dirp); | |
629 | return; | |
630 | } | |
631 | } | |
632 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
633 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
634 | if (verbose_mode) | |
635 | fprintf(stderr, "Entering directory: %s", path); | |
0fff78ff | 636 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 637 | if (response() < 0) { |
638 | closedir(dirp); | |
639 | return; | |
640 | } | |
641 | while ((dp = readdir(dirp)) != NULL) { | |
642 | if (dp->d_ino == 0) | |
643 | continue; | |
644 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
645 | continue; | |
646 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
647 | run_err("%s/%s: name too long", name, dp->d_name); | |
648 | continue; | |
649 | } | |
650 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
651 | vect[0] = path; | |
652 | source(1, vect); | |
653 | } | |
654 | (void) closedir(dirp); | |
0fff78ff | 655 | (void) atomicio(vwrite, remout, "E\n", 2); |
3c0ef626 | 656 | (void) response(); |
657 | } | |
658 | ||
6a9b3198 | 659 | void |
660 | bwlimit(int amount) | |
661 | { | |
662 | static struct timeval bwstart, bwend; | |
663 | static int lamt, thresh = 16384; | |
c9f39d2c | 664 | u_int64_t waitlen; |
6a9b3198 | 665 | struct timespec ts, rm; |
666 | ||
667 | if (!timerisset(&bwstart)) { | |
668 | gettimeofday(&bwstart, NULL); | |
669 | return; | |
670 | } | |
671 | ||
672 | lamt += amount; | |
673 | if (lamt < thresh) | |
674 | return; | |
675 | ||
676 | gettimeofday(&bwend, NULL); | |
677 | timersub(&bwend, &bwstart, &bwend); | |
678 | if (!timerisset(&bwend)) | |
679 | return; | |
680 | ||
681 | lamt *= 8; | |
c9f39d2c | 682 | waitlen = (double)1000000L * lamt / limit_rate; |
6a9b3198 | 683 | |
c9f39d2c | 684 | bwstart.tv_sec = waitlen / 1000000L; |
685 | bwstart.tv_usec = waitlen % 1000000L; | |
6a9b3198 | 686 | |
687 | if (timercmp(&bwstart, &bwend, >)) { | |
688 | timersub(&bwstart, &bwend, &bwend); | |
689 | ||
690 | /* Adjust the wait time */ | |
691 | if (bwend.tv_sec) { | |
692 | thresh /= 2; | |
693 | if (thresh < 2048) | |
694 | thresh = 2048; | |
695 | } else if (bwend.tv_usec < 100) { | |
696 | thresh *= 2; | |
697 | if (thresh > 32768) | |
698 | thresh = 32768; | |
699 | } | |
700 | ||
701 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
702 | while (nanosleep(&ts, &rm) == -1) { | |
703 | if (errno != EINTR) | |
704 | break; | |
705 | ts = rm; | |
706 | } | |
707 | } | |
708 | ||
709 | lamt = 0; | |
710 | gettimeofday(&bwstart, NULL); | |
711 | } | |
712 | ||
3c0ef626 | 713 | void |
0fff78ff | 714 | sink(int argc, char **argv) |
3c0ef626 | 715 | { |
716 | static BUF buffer; | |
717 | struct stat stb; | |
718 | enum { | |
719 | YES, NO, DISPLAYED | |
720 | } wrerr; | |
721 | BUF *bp; | |
722 | off_t i, j; | |
723 | int amt, count, exists, first, mask, mode, ofd, omode; | |
6a9b3198 | 724 | off_t size, statbytes; |
3c0ef626 | 725 | int setimes, targisdir, wrerrno = 0; |
726 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
727 | struct timeval tv[2]; | |
728 | ||
729 | #define atime tv[0] | |
730 | #define mtime tv[1] | |
996d5e62 | 731 | #define SCREWUP(str) { why = str; goto screwup; } |
3c0ef626 | 732 | |
733 | setimes = targisdir = 0; | |
734 | mask = umask(0); | |
735 | if (!pflag) | |
736 | (void) umask(mask); | |
737 | if (argc != 1) { | |
738 | run_err("ambiguous target"); | |
739 | exit(1); | |
740 | } | |
741 | targ = *argv; | |
742 | if (targetshouldbedirectory) | |
743 | verifydir(targ); | |
744 | ||
0fff78ff | 745 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 746 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) |
747 | targisdir = 1; | |
748 | for (first = 1;; first = 0) { | |
749 | cp = buf; | |
750 | if (atomicio(read, remin, cp, 1) <= 0) | |
751 | return; | |
752 | if (*cp++ == '\n') | |
753 | SCREWUP("unexpected <newline>"); | |
754 | do { | |
755 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
756 | SCREWUP("lost connection"); | |
757 | *cp++ = ch; | |
758 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
759 | *cp = 0; | |
c9f39d2c | 760 | if (verbose_mode) |
761 | fprintf(stderr, "Sink: %s", buf); | |
3c0ef626 | 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"); | |
c9f39d2c | 825 | if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { |
826 | run_err("error: unexpected filename: %s", cp); | |
827 | exit(1); | |
828 | } | |
3c0ef626 | 829 | if (targisdir) { |
830 | static char *namebuf; | |
831 | static int cursize; | |
832 | size_t need; | |
833 | ||
834 | need = strlen(targ) + strlen(cp) + 250; | |
835 | if (need > cursize) { | |
836 | if (namebuf) | |
837 | xfree(namebuf); | |
838 | namebuf = xmalloc(need); | |
839 | cursize = need; | |
840 | } | |
841 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
700318f3 | 842 | strcmp(targ, "/") ? "/" : "", cp); |
3c0ef626 | 843 | np = namebuf; |
844 | } else | |
845 | np = targ; | |
846 | curfile = cp; | |
847 | exists = stat(np, &stb) == 0; | |
848 | if (buf[0] == 'D') { | |
849 | int mod_flag = pflag; | |
c9f39d2c | 850 | if (!iamrecursive) |
851 | SCREWUP("received directory without -r"); | |
3c0ef626 | 852 | if (exists) { |
853 | if (!S_ISDIR(stb.st_mode)) { | |
854 | errno = ENOTDIR; | |
855 | goto bad; | |
856 | } | |
857 | if (pflag) | |
858 | (void) chmod(np, mode); | |
859 | } else { | |
860 | /* Handle copying from a read-only | |
861 | directory */ | |
862 | mod_flag = 1; | |
863 | if (mkdir(np, mode | S_IRWXU) < 0) | |
864 | goto bad; | |
865 | } | |
866 | vect[0] = xstrdup(np); | |
867 | sink(1, vect); | |
868 | if (setimes) { | |
869 | setimes = 0; | |
870 | if (utimes(vect[0], tv) < 0) | |
871 | run_err("%s: set times: %s", | |
872 | vect[0], strerror(errno)); | |
873 | } | |
874 | if (mod_flag) | |
875 | (void) chmod(vect[0], mode); | |
876 | if (vect[0]) | |
877 | xfree(vect[0]); | |
878 | continue; | |
879 | } | |
880 | omode = mode; | |
881 | mode |= S_IWRITE; | |
882 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
883 | bad: run_err("%s: %s", np, strerror(errno)); | |
884 | continue; | |
885 | } | |
0fff78ff | 886 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 887 | if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { |
888 | (void) close(ofd); | |
889 | continue; | |
890 | } | |
891 | cp = bp->buf; | |
892 | wrerr = NO; | |
893 | ||
3c0ef626 | 894 | statbytes = 0; |
6a9b3198 | 895 | if (showprogress) |
896 | start_progress_meter(curfile, size, &statbytes); | |
3c0ef626 | 897 | for (count = i = 0; i < size; i += 4096) { |
898 | amt = 4096; | |
899 | if (i + amt > size) | |
900 | amt = size - i; | |
901 | count += amt; | |
902 | do { | |
c9f39d2c | 903 | j = atomicio(read, remin, cp, amt); |
904 | if (j <= 0) { | |
3c0ef626 | 905 | run_err("%s", j ? strerror(errno) : |
906 | "dropped connection"); | |
907 | exit(1); | |
908 | } | |
909 | amt -= j; | |
910 | cp += j; | |
911 | statbytes += j; | |
912 | } while (amt > 0); | |
cdd66111 | 913 | |
914 | if (limit_rate) | |
6a9b3198 | 915 | bwlimit(4096); |
916 | ||
3c0ef626 | 917 | if (count == bp->cnt) { |
918 | /* Keep reading so we stay sync'd up. */ | |
919 | if (wrerr == NO) { | |
0fff78ff | 920 | j = atomicio(vwrite, ofd, bp->buf, count); |
3c0ef626 | 921 | if (j != count) { |
922 | wrerr = YES; | |
923 | wrerrno = j >= 0 ? EIO : errno; | |
924 | } | |
925 | } | |
926 | count = 0; | |
927 | cp = bp->buf; | |
928 | } | |
929 | } | |
930 | if (showprogress) | |
6a9b3198 | 931 | stop_progress_meter(); |
3c0ef626 | 932 | if (count != 0 && wrerr == NO && |
0fff78ff | 933 | (j = atomicio(vwrite, ofd, bp->buf, count)) != count) { |
3c0ef626 | 934 | wrerr = YES; |
935 | wrerrno = j >= 0 ? EIO : errno; | |
936 | } | |
6a9b3198 | 937 | if (wrerr == NO && ftruncate(ofd, size) != 0) { |
3c0ef626 | 938 | run_err("%s: truncate: %s", np, strerror(errno)); |
939 | wrerr = DISPLAYED; | |
940 | } | |
941 | if (pflag) { | |
942 | if (exists || omode != mode) | |
943 | #ifdef HAVE_FCHMOD | |
c9f39d2c | 944 | if (fchmod(ofd, omode)) { |
3c0ef626 | 945 | #else /* HAVE_FCHMOD */ |
c9f39d2c | 946 | if (chmod(np, omode)) { |
3c0ef626 | 947 | #endif /* HAVE_FCHMOD */ |
948 | run_err("%s: set mode: %s", | |
949 | np, strerror(errno)); | |
c9f39d2c | 950 | wrerr = DISPLAYED; |
951 | } | |
3c0ef626 | 952 | } else { |
953 | if (!exists && omode != mode) | |
954 | #ifdef HAVE_FCHMOD | |
c9f39d2c | 955 | if (fchmod(ofd, omode & ~mask)) { |
3c0ef626 | 956 | #else /* HAVE_FCHMOD */ |
c9f39d2c | 957 | if (chmod(np, omode & ~mask)) { |
3c0ef626 | 958 | #endif /* HAVE_FCHMOD */ |
959 | run_err("%s: set mode: %s", | |
960 | np, strerror(errno)); | |
c9f39d2c | 961 | wrerr = DISPLAYED; |
962 | } | |
3c0ef626 | 963 | } |
964 | if (close(ofd) == -1) { | |
965 | wrerr = YES; | |
966 | wrerrno = errno; | |
967 | } | |
968 | (void) response(); | |
969 | if (setimes && wrerr == NO) { | |
970 | setimes = 0; | |
971 | if (utimes(np, tv) < 0) { | |
972 | run_err("%s: set times: %s", | |
973 | np, strerror(errno)); | |
974 | wrerr = DISPLAYED; | |
975 | } | |
976 | } | |
977 | switch (wrerr) { | |
978 | case YES: | |
979 | run_err("%s: %s", np, strerror(wrerrno)); | |
980 | break; | |
981 | case NO: | |
0fff78ff | 982 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 983 | break; |
984 | case DISPLAYED: | |
985 | break; | |
986 | } | |
987 | } | |
988 | screwup: | |
989 | run_err("protocol error: %s", why); | |
990 | exit(1); | |
991 | } | |
992 | ||
993 | int | |
e9a17296 | 994 | response(void) |
3c0ef626 | 995 | { |
996 | char ch, *cp, resp, rbuf[2048]; | |
997 | ||
998 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
999 | lostconn(0); | |
1000 | ||
1001 | cp = rbuf; | |
1002 | switch (resp) { | |
1003 | case 0: /* ok */ | |
1004 | return (0); | |
1005 | default: | |
1006 | *cp++ = resp; | |
1007 | /* FALLTHROUGH */ | |
1008 | case 1: /* error, followed by error msg */ | |
1009 | case 2: /* fatal error, "" */ | |
1010 | do { | |
1011 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1012 | lostconn(0); | |
1013 | *cp++ = ch; | |
1014 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1015 | ||
1016 | if (!iamremote) | |
0fff78ff | 1017 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); |
3c0ef626 | 1018 | ++errs; |
1019 | if (resp == 1) | |
1020 | return (-1); | |
1021 | exit(1); | |
1022 | } | |
1023 | /* NOTREACHED */ | |
1024 | } | |
1025 | ||
1026 | void | |
e9a17296 | 1027 | usage(void) |
3c0ef626 | 1028 | { |
1029 | (void) fprintf(stderr, | |
cdd66111 | 1030 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" |
1031 | " [-l limit] [-o ssh_option] [-P port] [-S program]\n" | |
f5799ae1 | 1032 | " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); |
3c0ef626 | 1033 | exit(1); |
1034 | } | |
1035 | ||
1036 | void | |
1037 | run_err(const char *fmt,...) | |
1038 | { | |
1039 | static FILE *fp; | |
1040 | va_list ap; | |
1041 | ||
1042 | ++errs; | |
1043 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
1044 | return; | |
1045 | (void) fprintf(fp, "%c", 0x01); | |
1046 | (void) fprintf(fp, "scp: "); | |
1047 | va_start(ap, fmt); | |
1048 | (void) vfprintf(fp, fmt, ap); | |
1049 | va_end(ap); | |
1050 | (void) fprintf(fp, "\n"); | |
1051 | (void) fflush(fp); | |
1052 | ||
1053 | if (!iamremote) { | |
1054 | va_start(ap, fmt); | |
1055 | vfprintf(stderr, fmt, ap); | |
1056 | va_end(ap); | |
1057 | fprintf(stderr, "\n"); | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | void | |
0fff78ff | 1062 | verifydir(char *cp) |
3c0ef626 | 1063 | { |
1064 | struct stat stb; | |
1065 | ||
1066 | if (!stat(cp, &stb)) { | |
1067 | if (S_ISDIR(stb.st_mode)) | |
1068 | return; | |
1069 | errno = ENOTDIR; | |
1070 | } | |
1071 | run_err("%s: %s", cp, strerror(errno)); | |
1072 | exit(1); | |
1073 | } | |
1074 | ||
1075 | int | |
0fff78ff | 1076 | okname(char *cp0) |
3c0ef626 | 1077 | { |
1078 | int c; | |
1079 | char *cp; | |
1080 | ||
1081 | cp = cp0; | |
1082 | do { | |
1083 | c = (int)*cp; | |
1084 | if (c & 0200) | |
1085 | goto bad; | |
6a9b3198 | 1086 | if (!isalpha(c) && !isdigit(c)) { |
1087 | switch (c) { | |
1088 | case '\'': | |
1089 | case '"': | |
1090 | case '`': | |
1091 | case ' ': | |
1092 | case '#': | |
1093 | goto bad; | |
1094 | default: | |
1095 | break; | |
1096 | } | |
1097 | } | |
3c0ef626 | 1098 | } while (*++cp); |
1099 | return (1); | |
1100 | ||
1101 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1102 | return (0); | |
1103 | } | |
1104 | ||
1105 | BUF * | |
0fff78ff | 1106 | allocbuf(BUF *bp, int fd, int blksize) |
3c0ef626 | 1107 | { |
1108 | size_t size; | |
1109 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1110 | struct stat stb; | |
1111 | ||
1112 | if (fstat(fd, &stb) < 0) { | |
1113 | run_err("fstat: %s", strerror(errno)); | |
1114 | return (0); | |
1115 | } | |
6a9b3198 | 1116 | size = roundup(stb.st_blksize, blksize); |
1117 | if (size == 0) | |
3c0ef626 | 1118 | size = blksize; |
3c0ef626 | 1119 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
1120 | size = blksize; | |
1121 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1122 | if (bp->cnt >= size) | |
1123 | return (bp); | |
1124 | if (bp->buf == NULL) | |
1125 | bp->buf = xmalloc(size); | |
1126 | else | |
1127 | bp->buf = xrealloc(bp->buf, size); | |
1128 | memset(bp->buf, 0, size); | |
1129 | bp->cnt = size; | |
1130 | return (bp); | |
1131 | } | |
1132 | ||
1133 | void | |
0fff78ff | 1134 | lostconn(int signo) |
3c0ef626 | 1135 | { |
1136 | if (!iamremote) | |
1137 | write(STDERR_FILENO, "lost connection\n", 16); | |
1138 | if (signo) | |
1139 | _exit(1); | |
1140 | else | |
1141 | exit(1); | |
1142 | } |