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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" | |
08822d99 | 74 | RCSID("$OpenBSD: scp.c,v 1.130 2006/01/31 10:35:43 djm 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 | ||
08822d99 | 121 | static int |
122 | do_local_cmd(arglist *a) | |
123 | { | |
124 | u_int i; | |
125 | int status; | |
126 | pid_t pid; | |
127 | ||
128 | if (a->num == 0) | |
129 | fatal("do_local_cmd: no arguments"); | |
130 | ||
131 | if (verbose_mode) { | |
132 | fprintf(stderr, "Executing:"); | |
133 | for (i = 0; i < a->num; i++) | |
134 | fprintf(stderr, " %s", a->list[i]); | |
135 | fprintf(stderr, "\n"); | |
136 | } | |
137 | if ((pid = fork()) == -1) | |
138 | fatal("do_local_cmd: fork: %s", strerror(errno)); | |
139 | ||
140 | if (pid == 0) { | |
141 | execvp(a->list[0], a->list); | |
142 | perror(a->list[0]); | |
143 | exit(1); | |
144 | } | |
145 | ||
146 | do_cmd_pid = pid; | |
147 | signal(SIGTERM, killchild); | |
148 | signal(SIGINT, killchild); | |
149 | signal(SIGHUP, killchild); | |
150 | ||
151 | while (waitpid(pid, &status, 0) == -1) | |
152 | if (errno != EINTR) | |
153 | fatal("do_local_cmd: waitpid: %s", strerror(errno)); | |
154 | ||
155 | do_cmd_pid = -1; | |
156 | ||
157 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
158 | return (-1); | |
159 | ||
160 | return (0); | |
161 | } | |
162 | ||
3c0ef626 | 163 | /* |
164 | * This function executes the given command as the specified user on the | |
165 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
166 | * assigns the input and output file descriptors on success. | |
167 | */ | |
168 | ||
169 | int | |
170 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc) | |
171 | { | |
172 | int pin[2], pout[2], reserved[2]; | |
173 | ||
174 | if (verbose_mode) | |
175 | fprintf(stderr, | |
176 | "Executing: program %s host %s, user %s, command %s\n", | |
177 | ssh_program, host, | |
178 | remuser ? remuser : "(unspecified)", cmd); | |
179 | ||
180 | /* | |
181 | * Reserve two descriptors so that the real pipes won't get | |
182 | * descriptors 0 and 1 because that will screw up dup2 below. | |
183 | */ | |
184 | pipe(reserved); | |
185 | ||
186 | /* Create a socket pair for communicating with ssh. */ | |
187 | if (pipe(pin) < 0) | |
188 | fatal("pipe: %s", strerror(errno)); | |
189 | if (pipe(pout) < 0) | |
190 | fatal("pipe: %s", strerror(errno)); | |
191 | ||
192 | /* Free the reserved descriptors. */ | |
193 | close(reserved[0]); | |
194 | close(reserved[1]); | |
195 | ||
473db5ab | 196 | /* Fork a child to execute the command on the remote host using ssh. */ |
197 | do_cmd_pid = fork(); | |
198 | if (do_cmd_pid == 0) { | |
3c0ef626 | 199 | /* Child. */ |
200 | close(pin[1]); | |
201 | close(pout[0]); | |
202 | dup2(pin[0], 0); | |
203 | dup2(pout[1], 1); | |
204 | close(pin[0]); | |
205 | close(pout[1]); | |
206 | ||
08822d99 | 207 | replacearg(&args, 0, "%s", ssh_program); |
3c0ef626 | 208 | if (remuser != NULL) |
209 | addargs(&args, "-l%s", remuser); | |
210 | addargs(&args, "%s", host); | |
211 | addargs(&args, "%s", cmd); | |
212 | ||
213 | execvp(ssh_program, args.list); | |
214 | perror(ssh_program); | |
215 | exit(1); | |
473db5ab | 216 | } else if (do_cmd_pid == -1) { |
217 | fatal("fork: %s", strerror(errno)); | |
3c0ef626 | 218 | } |
219 | /* Parent. Close the other side, and return the local side. */ | |
220 | close(pin[0]); | |
221 | *fdout = pin[1]; | |
222 | close(pout[1]); | |
223 | *fdin = pout[0]; | |
473db5ab | 224 | signal(SIGTERM, killchild); |
225 | signal(SIGINT, killchild); | |
226 | signal(SIGHUP, killchild); | |
3c0ef626 | 227 | return 0; |
228 | } | |
229 | ||
230 | typedef struct { | |
473db5ab | 231 | size_t cnt; |
3c0ef626 | 232 | char *buf; |
233 | } BUF; | |
234 | ||
235 | BUF *allocbuf(BUF *, int, int); | |
236 | void lostconn(int); | |
237 | void nospace(void); | |
238 | int okname(char *); | |
239 | void run_err(const char *,...); | |
240 | void verifydir(char *); | |
241 | ||
242 | struct passwd *pwd; | |
243 | uid_t userid; | |
244 | int errs, remin, remout; | |
245 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
246 | ||
247 | #define CMDNEEDS 64 | |
248 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
249 | ||
250 | int response(void); | |
251 | void rsource(char *, struct stat *); | |
252 | void sink(int, char *[]); | |
253 | void source(int, char *[]); | |
254 | void tolocal(int, char *[]); | |
255 | void toremote(char *, int, char *[]); | |
256 | void usage(void); | |
257 | ||
258 | int | |
473db5ab | 259 | main(int argc, char **argv) |
3c0ef626 | 260 | { |
473db5ab | 261 | int ch, fflag, tflag, status; |
262 | double speed; | |
263 | char *targ, *endp; | |
3c0ef626 | 264 | extern char *optarg; |
265 | extern int optind; | |
266 | ||
08822d99 | 267 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
268 | sanitise_stdfd(); | |
269 | ||
473db5ab | 270 | __progname = ssh_get_progname(argv[0]); |
3c0ef626 | 271 | |
08822d99 | 272 | memset(&args, '\0', sizeof(args)); |
3c0ef626 | 273 | args.list = NULL; |
08822d99 | 274 | addargs(&args, "%s", ssh_program); |
3c0ef626 | 275 | addargs(&args, "-x"); |
276 | addargs(&args, "-oForwardAgent no"); | |
08822d99 | 277 | addargs(&args, "-oPermitLocalCommand no"); |
3c0ef626 | 278 | addargs(&args, "-oClearAllForwardings yes"); |
279 | ||
280 | fflag = tflag = 0; | |
8af0406b | 281 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246zS:o:F:R:")) != -1) |
3c0ef626 | 282 | switch (ch) { |
283 | /* User-visible flags. */ | |
473db5ab | 284 | case '1': |
285 | case '2': | |
3c0ef626 | 286 | case '4': |
287 | case '6': | |
288 | case 'C': | |
473db5ab | 289 | case 'z': |
3c0ef626 | 290 | addargs(&args, "-%c", ch); |
291 | break; | |
292 | case 'o': | |
293 | case 'c': | |
294 | case 'i': | |
295 | case 'F': | |
296 | addargs(&args, "-%c%s", ch, optarg); | |
297 | break; | |
298 | case 'P': | |
299 | addargs(&args, "-p%s", optarg); | |
300 | break; | |
301 | case 'B': | |
302 | addargs(&args, "-oBatchmode yes"); | |
303 | break; | |
473db5ab | 304 | case 'l': |
305 | speed = strtod(optarg, &endp); | |
306 | if (speed <= 0 || *endp != '\0') | |
307 | usage(); | |
308 | limit_rate = speed * 1024; | |
309 | break; | |
3c0ef626 | 310 | case 'p': |
311 | pflag = 1; | |
312 | break; | |
313 | case 'r': | |
314 | iamrecursive = 1; | |
315 | break; | |
316 | case 'S': | |
317 | ssh_program = xstrdup(optarg); | |
318 | break; | |
319 | case 'v': | |
320 | addargs(&args, "-v"); | |
321 | verbose_mode = 1; | |
322 | break; | |
323 | case 'q': | |
473db5ab | 324 | addargs(&args, "-q"); |
3c0ef626 | 325 | showprogress = 0; |
326 | break; | |
327 | ||
328 | /* Server options. */ | |
329 | case 'd': | |
330 | targetshouldbedirectory = 1; | |
331 | break; | |
332 | case 'f': /* "from" */ | |
333 | iamremote = 1; | |
334 | fflag = 1; | |
335 | break; | |
336 | case 't': /* "to" */ | |
337 | iamremote = 1; | |
338 | tflag = 1; | |
339 | #ifdef HAVE_CYGWIN | |
340 | setmode(0, O_BINARY); | |
341 | #endif | |
342 | break; | |
8af0406b | 343 | case 'R': |
344 | addargs(&args, "-r%s", optarg); | |
345 | break; | |
473db5ab | 346 | case 'w': |
347 | addargs(&args, "-w%s", optarg); | |
348 | break; | |
3c0ef626 | 349 | default: |
350 | usage(); | |
351 | } | |
352 | argc -= optind; | |
353 | argv += optind; | |
354 | ||
355 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
473db5ab | 356 | fatal("unknown user %u", (u_int) userid); |
3c0ef626 | 357 | |
358 | if (!isatty(STDERR_FILENO)) | |
359 | showprogress = 0; | |
360 | ||
361 | remin = STDIN_FILENO; | |
362 | remout = STDOUT_FILENO; | |
363 | ||
364 | if (fflag) { | |
365 | /* Follow "protocol", send data. */ | |
366 | (void) response(); | |
367 | source(argc, argv); | |
368 | exit(errs != 0); | |
369 | } | |
370 | if (tflag) { | |
371 | /* Receive data. */ | |
372 | sink(argc, argv); | |
373 | exit(errs != 0); | |
374 | } | |
375 | if (argc < 2) | |
376 | usage(); | |
377 | if (argc > 2) | |
378 | targetshouldbedirectory = 1; | |
379 | ||
380 | remin = remout = -1; | |
473db5ab | 381 | do_cmd_pid = -1; |
3c0ef626 | 382 | /* Command to be executed on remote system using "ssh". */ |
383 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
384 | verbose_mode ? " -v" : "", | |
385 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
386 | targetshouldbedirectory ? " -d" : ""); | |
387 | ||
388 | (void) signal(SIGPIPE, lostconn); | |
389 | ||
390 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
391 | toremote(targ, argc, argv); | |
392 | else { | |
3c0ef626 | 393 | if (targetshouldbedirectory) |
394 | verifydir(argv[argc - 1]); | |
08822d99 | 395 | tolocal(argc, argv); /* Dest is local host. */ |
3c0ef626 | 396 | } |
473db5ab | 397 | /* |
398 | * Finally check the exit status of the ssh process, if one was forked | |
399 | * and no error has occured yet | |
400 | */ | |
401 | if (do_cmd_pid != -1 && errs == 0) { | |
402 | if (remin != -1) | |
403 | (void) close(remin); | |
404 | if (remout != -1) | |
405 | (void) close(remout); | |
406 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
407 | errs = 1; | |
408 | else { | |
409 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
410 | errs = 1; | |
411 | } | |
412 | } | |
3c0ef626 | 413 | exit(errs != 0); |
414 | } | |
415 | ||
416 | void | |
473db5ab | 417 | toremote(char *targ, int argc, char **argv) |
3c0ef626 | 418 | { |
419 | int i, len; | |
473db5ab | 420 | char *bp, *host, *src, *suser, *thost, *tuser, *arg; |
08822d99 | 421 | arglist alist; |
422 | ||
423 | memset(&alist, '\0', sizeof(alist)); | |
424 | alist.list = NULL; | |
3c0ef626 | 425 | |
426 | *targ++ = 0; | |
427 | if (*targ == 0) | |
428 | targ = "."; | |
429 | ||
473db5ab | 430 | arg = xstrdup(argv[argc - 1]); |
431 | if ((thost = strrchr(arg, '@'))) { | |
3c0ef626 | 432 | /* user@host */ |
433 | *thost++ = 0; | |
473db5ab | 434 | tuser = arg; |
3c0ef626 | 435 | if (*tuser == '\0') |
436 | tuser = NULL; | |
3c0ef626 | 437 | } else { |
473db5ab | 438 | thost = arg; |
3c0ef626 | 439 | tuser = NULL; |
440 | } | |
441 | ||
08822d99 | 442 | if (tuser != NULL && !okname(tuser)) { |
443 | xfree(arg); | |
444 | return; | |
445 | } | |
446 | ||
3c0ef626 | 447 | for (i = 0; i < argc - 1; i++) { |
448 | src = colon(argv[i]); | |
449 | if (src) { /* remote to remote */ | |
08822d99 | 450 | freeargs(&alist); |
451 | addargs(&alist, "%s", ssh_program); | |
452 | if (verbose_mode) | |
453 | addargs(&alist, "-v"); | |
454 | addargs(&alist, "-x"); | |
455 | addargs(&alist, "-oClearAllForwardings yes"); | |
456 | addargs(&alist, "-n"); | |
457 | ||
3c0ef626 | 458 | *src++ = 0; |
459 | if (*src == 0) | |
460 | src = "."; | |
473db5ab | 461 | host = strrchr(argv[i], '@'); |
08822d99 | 462 | |
3c0ef626 | 463 | if (host) { |
464 | *host++ = 0; | |
465 | host = cleanhostname(host); | |
466 | suser = argv[i]; | |
467 | if (*suser == '\0') | |
468 | suser = pwd->pw_name; | |
08822d99 | 469 | else if (!okname(suser)) |
3c0ef626 | 470 | continue; |
08822d99 | 471 | addargs(&alist, "-l"); |
472 | addargs(&alist, "%s", suser); | |
3c0ef626 | 473 | } else { |
474 | host = cleanhostname(argv[i]); | |
3c0ef626 | 475 | } |
08822d99 | 476 | addargs(&alist, "%s", host); |
477 | addargs(&alist, "%s", cmd); | |
478 | addargs(&alist, "%s", src); | |
479 | addargs(&alist, "%s%s%s:%s", | |
480 | tuser ? tuser : "", tuser ? "@" : "", | |
481 | thost, targ); | |
482 | if (do_local_cmd(&alist) != 0) | |
473db5ab | 483 | errs = 1; |
3c0ef626 | 484 | } else { /* local to remote */ |
485 | if (remin == -1) { | |
486 | len = strlen(targ) + CMDNEEDS + 20; | |
487 | bp = xmalloc(len); | |
488 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
489 | host = cleanhostname(thost); | |
490 | if (do_cmd(host, tuser, bp, &remin, | |
491 | &remout, argc) < 0) | |
492 | exit(1); | |
493 | if (response() < 0) | |
494 | exit(1); | |
495 | (void) xfree(bp); | |
496 | } | |
497 | source(1, argv + i); | |
498 | } | |
499 | } | |
500 | } | |
501 | ||
502 | void | |
473db5ab | 503 | tolocal(int argc, char **argv) |
3c0ef626 | 504 | { |
505 | int i, len; | |
506 | char *bp, *host, *src, *suser; | |
08822d99 | 507 | arglist alist; |
508 | ||
509 | memset(&alist, '\0', sizeof(alist)); | |
510 | alist.list = NULL; | |
3c0ef626 | 511 | |
512 | for (i = 0; i < argc - 1; i++) { | |
513 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
08822d99 | 514 | freeargs(&alist); |
515 | addargs(&alist, "%s", _PATH_CP); | |
516 | if (iamrecursive) | |
517 | addargs(&alist, "-r"); | |
518 | if (pflag) | |
519 | addargs(&alist, "-p"); | |
520 | addargs(&alist, "%s", argv[i]); | |
521 | addargs(&alist, "%s", argv[argc-1]); | |
522 | if (do_local_cmd(&alist)) | |
3c0ef626 | 523 | ++errs; |
3c0ef626 | 524 | continue; |
525 | } | |
526 | *src++ = 0; | |
527 | if (*src == 0) | |
528 | src = "."; | |
473db5ab | 529 | if ((host = strrchr(argv[i], '@')) == NULL) { |
3c0ef626 | 530 | host = argv[i]; |
531 | suser = NULL; | |
532 | } else { | |
533 | *host++ = 0; | |
534 | suser = argv[i]; | |
535 | if (*suser == '\0') | |
536 | suser = pwd->pw_name; | |
3c0ef626 | 537 | } |
538 | host = cleanhostname(host); | |
539 | len = strlen(src) + CMDNEEDS + 20; | |
540 | bp = xmalloc(len); | |
541 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
542 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
543 | (void) xfree(bp); | |
544 | ++errs; | |
545 | continue; | |
546 | } | |
547 | xfree(bp); | |
548 | sink(1, argv + argc - 1); | |
549 | (void) close(remin); | |
550 | remin = remout = -1; | |
551 | } | |
552 | } | |
553 | ||
554 | void | |
473db5ab | 555 | source(int argc, char **argv) |
3c0ef626 | 556 | { |
557 | struct stat stb; | |
558 | static BUF buffer; | |
559 | BUF *bp; | |
473db5ab | 560 | off_t i, amt, statbytes; |
561 | size_t result; | |
562 | int fd = -1, haderr, indx; | |
563 | char *last, *name, buf[16384]; | |
3c0ef626 | 564 | int len; |
565 | ||
566 | for (indx = 0; indx < argc; ++indx) { | |
567 | name = argv[indx]; | |
568 | statbytes = 0; | |
569 | len = strlen(name); | |
570 | while (len > 1 && name[len-1] == '/') | |
571 | name[--len] = '\0'; | |
572 | if (strchr(name, '\n') != NULL) { | |
573 | run_err("%s: skipping, filename contains a newline", | |
574 | name); | |
575 | goto next; | |
576 | } | |
577 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
578 | goto syserr; | |
579 | if (fstat(fd, &stb) < 0) { | |
580 | syserr: run_err("%s: %s", name, strerror(errno)); | |
581 | goto next; | |
582 | } | |
583 | switch (stb.st_mode & S_IFMT) { | |
584 | case S_IFREG: | |
585 | break; | |
586 | case S_IFDIR: | |
587 | if (iamrecursive) { | |
588 | rsource(name, &stb); | |
589 | goto next; | |
590 | } | |
591 | /* FALLTHROUGH */ | |
592 | default: | |
593 | run_err("%s: not a regular file", name); | |
594 | goto next; | |
595 | } | |
596 | if ((last = strrchr(name, '/')) == NULL) | |
597 | last = name; | |
598 | else | |
599 | ++last; | |
600 | curfile = last; | |
601 | if (pflag) { | |
602 | /* | |
603 | * Make it compatible with possible future | |
604 | * versions expecting microseconds. | |
605 | */ | |
606 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
607 | (u_long) stb.st_mtime, | |
608 | (u_long) stb.st_atime); | |
473db5ab | 609 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 610 | if (response() < 0) |
611 | goto next; | |
612 | } | |
613 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
3c0ef626 | 614 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
615 | (u_int) (stb.st_mode & FILEMODEMASK), | |
08822d99 | 616 | (long long)stb.st_size, last); |
3c0ef626 | 617 | if (verbose_mode) { |
618 | fprintf(stderr, "Sending file modes: %s", buf); | |
3c0ef626 | 619 | } |
473db5ab | 620 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 621 | if (response() < 0) |
622 | goto next; | |
473db5ab | 623 | /* this change decreases the number of read/write syscalls*/ |
624 | /* when scp acts as data source. this is the critical change*/ | |
625 | /* buf can actually remain at 2k but increasing both to 16k*/ | |
626 | /* seemed to make sense*/ | |
627 | if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) { | |
08822d99 | 628 | next: if (fd != -1) { |
629 | (void) close(fd); | |
630 | fd = -1; | |
631 | } | |
3c0ef626 | 632 | continue; |
633 | } | |
473db5ab | 634 | if (showprogress) |
635 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
3c0ef626 | 636 | /* Keep writing after an error so that we stay sync'd up. */ |
637 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
638 | amt = bp->cnt; | |
639 | if (i + amt > stb.st_size) | |
640 | amt = stb.st_size - i; | |
641 | if (!haderr) { | |
642 | result = atomicio(read, fd, bp->buf, amt); | |
643 | if (result != amt) | |
473db5ab | 644 | haderr = errno; |
3c0ef626 | 645 | } |
646 | if (haderr) | |
473db5ab | 647 | (void) atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 648 | else { |
473db5ab | 649 | result = atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 650 | if (result != amt) |
473db5ab | 651 | haderr = errno; |
3c0ef626 | 652 | statbytes += result; |
653 | } | |
473db5ab | 654 | if (limit_rate) |
655 | bwlimit(amt); | |
3c0ef626 | 656 | } |
657 | if (showprogress) | |
473db5ab | 658 | stop_progress_meter(); |
3c0ef626 | 659 | |
08822d99 | 660 | if (fd != -1) { |
661 | if (close(fd) < 0 && !haderr) | |
662 | haderr = errno; | |
663 | fd = -1; | |
664 | } | |
3c0ef626 | 665 | if (!haderr) |
473db5ab | 666 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 667 | else |
668 | run_err("%s: %s", name, strerror(haderr)); | |
669 | (void) response(); | |
670 | } | |
671 | } | |
672 | ||
673 | void | |
473db5ab | 674 | rsource(char *name, struct stat *statp) |
3c0ef626 | 675 | { |
676 | DIR *dirp; | |
677 | struct dirent *dp; | |
678 | char *last, *vect[1], path[1100]; | |
679 | ||
680 | if (!(dirp = opendir(name))) { | |
681 | run_err("%s: %s", name, strerror(errno)); | |
682 | return; | |
683 | } | |
684 | last = strrchr(name, '/'); | |
685 | if (last == 0) | |
686 | last = name; | |
687 | else | |
688 | last++; | |
689 | if (pflag) { | |
690 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
691 | (u_long) statp->st_mtime, | |
692 | (u_long) statp->st_atime); | |
473db5ab | 693 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 694 | if (response() < 0) { |
695 | closedir(dirp); | |
696 | return; | |
697 | } | |
698 | } | |
699 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
700 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
701 | if (verbose_mode) | |
702 | fprintf(stderr, "Entering directory: %s", path); | |
473db5ab | 703 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 704 | if (response() < 0) { |
705 | closedir(dirp); | |
706 | return; | |
707 | } | |
708 | while ((dp = readdir(dirp)) != NULL) { | |
709 | if (dp->d_ino == 0) | |
710 | continue; | |
711 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
712 | continue; | |
713 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
714 | run_err("%s/%s: name too long", name, dp->d_name); | |
715 | continue; | |
716 | } | |
717 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
718 | vect[0] = path; | |
719 | source(1, vect); | |
720 | } | |
721 | (void) closedir(dirp); | |
473db5ab | 722 | (void) atomicio(vwrite, remout, "E\n", 2); |
3c0ef626 | 723 | (void) response(); |
724 | } | |
725 | ||
726 | void | |
473db5ab | 727 | bwlimit(int amount) |
728 | { | |
729 | static struct timeval bwstart, bwend; | |
730 | static int lamt, thresh = 16384; | |
731 | u_int64_t waitlen; | |
732 | struct timespec ts, rm; | |
733 | ||
734 | if (!timerisset(&bwstart)) { | |
735 | gettimeofday(&bwstart, NULL); | |
736 | return; | |
737 | } | |
738 | ||
739 | lamt += amount; | |
740 | if (lamt < thresh) | |
741 | return; | |
742 | ||
743 | gettimeofday(&bwend, NULL); | |
744 | timersub(&bwend, &bwstart, &bwend); | |
745 | if (!timerisset(&bwend)) | |
746 | return; | |
747 | ||
748 | lamt *= 8; | |
749 | waitlen = (double)1000000L * lamt / limit_rate; | |
750 | ||
751 | bwstart.tv_sec = waitlen / 1000000L; | |
752 | bwstart.tv_usec = waitlen % 1000000L; | |
753 | ||
754 | if (timercmp(&bwstart, &bwend, >)) { | |
755 | timersub(&bwstart, &bwend, &bwend); | |
756 | ||
757 | /* Adjust the wait time */ | |
758 | if (bwend.tv_sec) { | |
759 | thresh /= 2; | |
760 | if (thresh < 2048) | |
761 | thresh = 2048; | |
762 | } else if (bwend.tv_usec < 100) { | |
763 | thresh *= 2; | |
764 | if (thresh > 32768) | |
765 | thresh = 32768; | |
766 | } | |
767 | ||
768 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
769 | while (nanosleep(&ts, &rm) == -1) { | |
770 | if (errno != EINTR) | |
771 | break; | |
772 | ts = rm; | |
773 | } | |
774 | } | |
775 | ||
776 | lamt = 0; | |
777 | gettimeofday(&bwstart, NULL); | |
778 | } | |
779 | ||
780 | void | |
781 | sink(int argc, char **argv) | |
3c0ef626 | 782 | { |
783 | static BUF buffer; | |
784 | struct stat stb; | |
785 | enum { | |
786 | YES, NO, DISPLAYED | |
787 | } wrerr; | |
788 | BUF *bp; | |
473db5ab | 789 | off_t i; |
790 | size_t j, count; | |
791 | int amt, exists, first, mask, mode, ofd, omode; | |
792 | off_t size, statbytes; | |
3c0ef626 | 793 | int setimes, targisdir, wrerrno = 0; |
473db5ab | 794 | char ch, *cp, *np, *targ, *why, *vect[1], buf[16384]; |
3c0ef626 | 795 | struct timeval tv[2]; |
796 | ||
797 | #define atime tv[0] | |
798 | #define mtime tv[1] | |
473db5ab | 799 | #define SCREWUP(str) { why = str; goto screwup; } |
3c0ef626 | 800 | |
801 | setimes = targisdir = 0; | |
802 | mask = umask(0); | |
803 | if (!pflag) | |
804 | (void) umask(mask); | |
805 | if (argc != 1) { | |
806 | run_err("ambiguous target"); | |
807 | exit(1); | |
808 | } | |
809 | targ = *argv; | |
810 | if (targetshouldbedirectory) | |
811 | verifydir(targ); | |
812 | ||
473db5ab | 813 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 814 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) |
815 | targisdir = 1; | |
816 | for (first = 1;; first = 0) { | |
817 | cp = buf; | |
473db5ab | 818 | if (atomicio(read, remin, cp, 1) != 1) |
3c0ef626 | 819 | return; |
820 | if (*cp++ == '\n') | |
821 | SCREWUP("unexpected <newline>"); | |
822 | do { | |
823 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
824 | SCREWUP("lost connection"); | |
825 | *cp++ = ch; | |
826 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
827 | *cp = 0; | |
473db5ab | 828 | if (verbose_mode) |
829 | fprintf(stderr, "Sink: %s", buf); | |
3c0ef626 | 830 | |
831 | if (buf[0] == '\01' || buf[0] == '\02') { | |
832 | if (iamremote == 0) | |
473db5ab | 833 | (void) atomicio(vwrite, STDERR_FILENO, |
3c0ef626 | 834 | buf + 1, strlen(buf + 1)); |
835 | if (buf[0] == '\02') | |
836 | exit(1); | |
837 | ++errs; | |
838 | continue; | |
839 | } | |
840 | if (buf[0] == 'E') { | |
473db5ab | 841 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 842 | return; |
843 | } | |
844 | if (ch == '\n') | |
845 | *--cp = 0; | |
846 | ||
847 | cp = buf; | |
848 | if (*cp == 'T') { | |
849 | setimes++; | |
850 | cp++; | |
851 | mtime.tv_sec = strtol(cp, &cp, 10); | |
852 | if (!cp || *cp++ != ' ') | |
853 | SCREWUP("mtime.sec not delimited"); | |
854 | mtime.tv_usec = strtol(cp, &cp, 10); | |
855 | if (!cp || *cp++ != ' ') | |
856 | SCREWUP("mtime.usec not delimited"); | |
857 | atime.tv_sec = strtol(cp, &cp, 10); | |
858 | if (!cp || *cp++ != ' ') | |
859 | SCREWUP("atime.sec not delimited"); | |
860 | atime.tv_usec = strtol(cp, &cp, 10); | |
861 | if (!cp || *cp++ != '\0') | |
862 | SCREWUP("atime.usec not delimited"); | |
473db5ab | 863 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 864 | continue; |
865 | } | |
866 | if (*cp != 'C' && *cp != 'D') { | |
867 | /* | |
868 | * Check for the case "rcp remote:foo\* local:bar". | |
869 | * In this case, the line "No match." can be returned | |
870 | * by the shell before the rcp command on the remote is | |
871 | * executed so the ^Aerror_message convention isn't | |
872 | * followed. | |
873 | */ | |
874 | if (first) { | |
875 | run_err("%s", cp); | |
876 | exit(1); | |
877 | } | |
878 | SCREWUP("expected control record"); | |
879 | } | |
880 | mode = 0; | |
881 | for (++cp; cp < buf + 5; cp++) { | |
882 | if (*cp < '0' || *cp > '7') | |
883 | SCREWUP("bad mode"); | |
884 | mode = (mode << 3) | (*cp - '0'); | |
885 | } | |
886 | if (*cp++ != ' ') | |
887 | SCREWUP("mode not delimited"); | |
888 | ||
889 | for (size = 0; isdigit(*cp);) | |
890 | size = size * 10 + (*cp++ - '0'); | |
891 | if (*cp++ != ' ') | |
892 | SCREWUP("size not delimited"); | |
473db5ab | 893 | if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { |
894 | run_err("error: unexpected filename: %s", cp); | |
895 | exit(1); | |
896 | } | |
3c0ef626 | 897 | if (targisdir) { |
898 | static char *namebuf; | |
473db5ab | 899 | static size_t cursize; |
3c0ef626 | 900 | size_t need; |
901 | ||
902 | need = strlen(targ) + strlen(cp) + 250; | |
903 | if (need > cursize) { | |
904 | if (namebuf) | |
905 | xfree(namebuf); | |
906 | namebuf = xmalloc(need); | |
907 | cursize = need; | |
908 | } | |
909 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
473db5ab | 910 | strcmp(targ, "/") ? "/" : "", cp); |
3c0ef626 | 911 | np = namebuf; |
912 | } else | |
913 | np = targ; | |
914 | curfile = cp; | |
915 | exists = stat(np, &stb) == 0; | |
916 | if (buf[0] == 'D') { | |
917 | int mod_flag = pflag; | |
473db5ab | 918 | if (!iamrecursive) |
919 | SCREWUP("received directory without -r"); | |
3c0ef626 | 920 | if (exists) { |
921 | if (!S_ISDIR(stb.st_mode)) { | |
922 | errno = ENOTDIR; | |
923 | goto bad; | |
924 | } | |
925 | if (pflag) | |
926 | (void) chmod(np, mode); | |
927 | } else { | |
928 | /* Handle copying from a read-only | |
929 | directory */ | |
930 | mod_flag = 1; | |
931 | if (mkdir(np, mode | S_IRWXU) < 0) | |
932 | goto bad; | |
933 | } | |
934 | vect[0] = xstrdup(np); | |
935 | sink(1, vect); | |
936 | if (setimes) { | |
937 | setimes = 0; | |
938 | if (utimes(vect[0], tv) < 0) | |
939 | run_err("%s: set times: %s", | |
940 | vect[0], strerror(errno)); | |
941 | } | |
942 | if (mod_flag) | |
943 | (void) chmod(vect[0], mode); | |
944 | if (vect[0]) | |
945 | xfree(vect[0]); | |
946 | continue; | |
947 | } | |
948 | omode = mode; | |
949 | mode |= S_IWRITE; | |
950 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
951 | bad: run_err("%s: %s", np, strerror(errno)); | |
952 | continue; | |
953 | } | |
473db5ab | 954 | (void) atomicio(vwrite, remout, "", 1); |
955 | if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) { | |
3c0ef626 | 956 | (void) close(ofd); |
957 | continue; | |
958 | } | |
959 | cp = bp->buf; | |
960 | wrerr = NO; | |
961 | ||
3c0ef626 | 962 | statbytes = 0; |
473db5ab | 963 | if (showprogress) |
964 | start_progress_meter(curfile, size, &statbytes); | |
965 | for (count = i = 0; i < size; i += sizeof(buf)) { | |
966 | amt = sizeof(buf); | |
3c0ef626 | 967 | if (i + amt > size) |
968 | amt = size - i; | |
969 | count += amt; | |
970 | do { | |
473db5ab | 971 | j = atomicio(read, remin, cp, amt); |
972 | if (j == 0) { | |
3c0ef626 | 973 | run_err("%s", j ? strerror(errno) : |
974 | "dropped connection"); | |
975 | exit(1); | |
976 | } | |
977 | amt -= j; | |
978 | cp += j; | |
979 | statbytes += j; | |
980 | } while (amt > 0); | |
473db5ab | 981 | |
982 | if (limit_rate) | |
983 | bwlimit(sizeof(buf)); | |
984 | ||
3c0ef626 | 985 | if (count == bp->cnt) { |
986 | /* Keep reading so we stay sync'd up. */ | |
987 | if (wrerr == NO) { | |
473db5ab | 988 | if (atomicio(vwrite, ofd, bp->buf, |
989 | count) != count) { | |
3c0ef626 | 990 | wrerr = YES; |
473db5ab | 991 | wrerrno = errno; |
3c0ef626 | 992 | } |
993 | } | |
994 | count = 0; | |
995 | cp = bp->buf; | |
996 | } | |
997 | } | |
998 | if (showprogress) | |
473db5ab | 999 | stop_progress_meter(); |
3c0ef626 | 1000 | if (count != 0 && wrerr == NO && |
473db5ab | 1001 | atomicio(vwrite, ofd, bp->buf, count) != count) { |
3c0ef626 | 1002 | wrerr = YES; |
473db5ab | 1003 | wrerrno = errno; |
3c0ef626 | 1004 | } |
473db5ab | 1005 | if (wrerr == NO && ftruncate(ofd, size) != 0) { |
3c0ef626 | 1006 | run_err("%s: truncate: %s", np, strerror(errno)); |
1007 | wrerr = DISPLAYED; | |
1008 | } | |
1009 | if (pflag) { | |
1010 | if (exists || omode != mode) | |
1011 | #ifdef HAVE_FCHMOD | |
473db5ab | 1012 | if (fchmod(ofd, omode)) { |
3c0ef626 | 1013 | #else /* HAVE_FCHMOD */ |
473db5ab | 1014 | if (chmod(np, omode)) { |
3c0ef626 | 1015 | #endif /* HAVE_FCHMOD */ |
1016 | run_err("%s: set mode: %s", | |
1017 | np, strerror(errno)); | |
473db5ab | 1018 | wrerr = DISPLAYED; |
1019 | } | |
3c0ef626 | 1020 | } else { |
1021 | if (!exists && omode != mode) | |
1022 | #ifdef HAVE_FCHMOD | |
473db5ab | 1023 | if (fchmod(ofd, omode & ~mask)) { |
3c0ef626 | 1024 | #else /* HAVE_FCHMOD */ |
473db5ab | 1025 | if (chmod(np, omode & ~mask)) { |
3c0ef626 | 1026 | #endif /* HAVE_FCHMOD */ |
1027 | run_err("%s: set mode: %s", | |
1028 | np, strerror(errno)); | |
473db5ab | 1029 | wrerr = DISPLAYED; |
1030 | } | |
3c0ef626 | 1031 | } |
1032 | if (close(ofd) == -1) { | |
1033 | wrerr = YES; | |
1034 | wrerrno = errno; | |
1035 | } | |
1036 | (void) response(); | |
1037 | if (setimes && wrerr == NO) { | |
1038 | setimes = 0; | |
1039 | if (utimes(np, tv) < 0) { | |
1040 | run_err("%s: set times: %s", | |
1041 | np, strerror(errno)); | |
1042 | wrerr = DISPLAYED; | |
1043 | } | |
1044 | } | |
1045 | switch (wrerr) { | |
1046 | case YES: | |
1047 | run_err("%s: %s", np, strerror(wrerrno)); | |
1048 | break; | |
1049 | case NO: | |
473db5ab | 1050 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 1051 | break; |
1052 | case DISPLAYED: | |
1053 | break; | |
1054 | } | |
1055 | } | |
1056 | screwup: | |
1057 | run_err("protocol error: %s", why); | |
1058 | exit(1); | |
1059 | } | |
1060 | ||
1061 | int | |
473db5ab | 1062 | response(void) |
3c0ef626 | 1063 | { |
1064 | char ch, *cp, resp, rbuf[2048]; | |
1065 | ||
1066 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
1067 | lostconn(0); | |
1068 | ||
1069 | cp = rbuf; | |
1070 | switch (resp) { | |
1071 | case 0: /* ok */ | |
1072 | return (0); | |
1073 | default: | |
1074 | *cp++ = resp; | |
1075 | /* FALLTHROUGH */ | |
1076 | case 1: /* error, followed by error msg */ | |
1077 | case 2: /* fatal error, "" */ | |
1078 | do { | |
1079 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1080 | lostconn(0); | |
1081 | *cp++ = ch; | |
1082 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1083 | ||
1084 | if (!iamremote) | |
473db5ab | 1085 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); |
3c0ef626 | 1086 | ++errs; |
1087 | if (resp == 1) | |
1088 | return (-1); | |
1089 | exit(1); | |
1090 | } | |
1091 | /* NOTREACHED */ | |
1092 | } | |
1093 | ||
1094 | void | |
473db5ab | 1095 | usage(void) |
3c0ef626 | 1096 | { |
1097 | (void) fprintf(stderr, | |
473db5ab | 1098 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" |
8af0406b | 1099 | " [-l limit] [-o ssh_option] [-P port] [-R Receive buffer size (Kb)] [-S program]\n" |
473db5ab | 1100 | " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); |
3c0ef626 | 1101 | exit(1); |
1102 | } | |
1103 | ||
1104 | void | |
1105 | run_err(const char *fmt,...) | |
1106 | { | |
1107 | static FILE *fp; | |
1108 | va_list ap; | |
1109 | ||
1110 | ++errs; | |
1111 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
1112 | return; | |
1113 | (void) fprintf(fp, "%c", 0x01); | |
1114 | (void) fprintf(fp, "scp: "); | |
1115 | va_start(ap, fmt); | |
1116 | (void) vfprintf(fp, fmt, ap); | |
1117 | va_end(ap); | |
1118 | (void) fprintf(fp, "\n"); | |
1119 | (void) fflush(fp); | |
1120 | ||
1121 | if (!iamremote) { | |
1122 | va_start(ap, fmt); | |
1123 | vfprintf(stderr, fmt, ap); | |
1124 | va_end(ap); | |
1125 | fprintf(stderr, "\n"); | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | void | |
473db5ab | 1130 | verifydir(char *cp) |
3c0ef626 | 1131 | { |
1132 | struct stat stb; | |
1133 | ||
1134 | if (!stat(cp, &stb)) { | |
1135 | if (S_ISDIR(stb.st_mode)) | |
1136 | return; | |
1137 | errno = ENOTDIR; | |
1138 | } | |
1139 | run_err("%s: %s", cp, strerror(errno)); | |
473db5ab | 1140 | killchild(0); |
3c0ef626 | 1141 | } |
1142 | ||
1143 | int | |
473db5ab | 1144 | okname(char *cp0) |
3c0ef626 | 1145 | { |
1146 | int c; | |
1147 | char *cp; | |
1148 | ||
1149 | cp = cp0; | |
1150 | do { | |
1151 | c = (int)*cp; | |
1152 | if (c & 0200) | |
1153 | goto bad; | |
473db5ab | 1154 | if (!isalpha(c) && !isdigit(c)) { |
1155 | switch (c) { | |
1156 | case '\'': | |
1157 | case '"': | |
1158 | case '`': | |
1159 | case ' ': | |
1160 | case '#': | |
1161 | goto bad; | |
1162 | default: | |
1163 | break; | |
1164 | } | |
1165 | } | |
3c0ef626 | 1166 | } while (*++cp); |
1167 | return (1); | |
1168 | ||
1169 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1170 | return (0); | |
1171 | } | |
1172 | ||
1173 | BUF * | |
473db5ab | 1174 | allocbuf(BUF *bp, int fd, int blksize) |
3c0ef626 | 1175 | { |
1176 | size_t size; | |
1177 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1178 | struct stat stb; | |
1179 | ||
1180 | if (fstat(fd, &stb) < 0) { | |
1181 | run_err("fstat: %s", strerror(errno)); | |
1182 | return (0); | |
1183 | } | |
473db5ab | 1184 | size = roundup(stb.st_blksize, blksize); |
1185 | if (size == 0) | |
3c0ef626 | 1186 | size = blksize; |
3c0ef626 | 1187 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
1188 | size = blksize; | |
1189 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1190 | if (bp->cnt >= size) | |
1191 | return (bp); | |
1192 | if (bp->buf == NULL) | |
1193 | bp->buf = xmalloc(size); | |
1194 | else | |
1195 | bp->buf = xrealloc(bp->buf, size); | |
1196 | memset(bp->buf, 0, size); | |
1197 | bp->cnt = size; | |
1198 | return (bp); | |
1199 | } | |
1200 | ||
1201 | void | |
473db5ab | 1202 | lostconn(int signo) |
3c0ef626 | 1203 | { |
1204 | if (!iamremote) | |
1205 | write(STDERR_FILENO, "lost connection\n", 16); | |
1206 | if (signo) | |
1207 | _exit(1); | |
1208 | else | |
1209 | exit(1); | |
1210 | } |