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1 | /* $OpenBSD: scp.c,v 1.165 2009/12/20 07:28:36 guenther Exp $ */ | |
2 | /* | |
3 | * scp - secure remote copy. This is basically patched BSD rcp which | |
4 | * uses ssh to do the data transfer (instead of using rcmd). | |
5 | * | |
6 | * NOTE: This version should NOT be suid root. (This uses ssh to | |
7 | * do the transfer and ssh has the necessary privileges.) | |
8 | * | |
9 | * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi> | |
10 | * | |
11 | * As far as I am concerned, the code I have written for this software | |
12 | * can be used freely for any purpose. Any derived versions of this | |
13 | * software must be clearly marked as such, and if the derived work is | |
14 | * incompatible with the protocol description in the RFC file, it must be | |
15 | * called by a name other than "ssh" or "Secure Shell". | |
16 | */ | |
17 | /* | |
18 | * Copyright (c) 1999 Theo de Raadt. All rights reserved. | |
19 | * Copyright (c) 1999 Aaron Campbell. All rights reserved. | |
20 | * | |
21 | * Redistribution and use in source and binary forms, with or without | |
22 | * modification, are permitted provided that the following conditions | |
23 | * are met: | |
24 | * 1. Redistributions of source code must retain the above copyright | |
25 | * notice, this list of conditions and the following disclaimer. | |
26 | * 2. Redistributions in binary form must reproduce the above copyright | |
27 | * notice, this list of conditions and the following disclaimer in the | |
28 | * documentation and/or other materials provided with the distribution. | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
31 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
32 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
33 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
34 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
35 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
36 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
37 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
38 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
39 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
40 | */ | |
41 | ||
42 | /* | |
43 | * Parts from: | |
44 | * | |
45 | * Copyright (c) 1983, 1990, 1992, 1993, 1995 | |
46 | * The Regents of the University of California. All rights reserved. | |
47 | * | |
48 | * Redistribution and use in source and binary forms, with or without | |
49 | * modification, are permitted provided that the following conditions | |
50 | * are met: | |
51 | * 1. Redistributions of source code must retain the above copyright | |
52 | * notice, this list of conditions and the following disclaimer. | |
53 | * 2. Redistributions in binary form must reproduce the above copyright | |
54 | * notice, this list of conditions and the following disclaimer in the | |
55 | * documentation and/or other materials provided with the distribution. | |
56 | * 3. Neither the name of the University nor the names of its contributors | |
57 | * may be used to endorse or promote products derived from this software | |
58 | * without specific prior written permission. | |
59 | * | |
60 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
61 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
62 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
63 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
64 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
65 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
66 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
67 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
68 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
69 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
70 | * SUCH DAMAGE. | |
71 | * | |
72 | */ | |
73 | ||
74 | #include "includes.h" | |
75 | ||
76 | #include <sys/types.h> | |
77 | #include <sys/param.h> | |
78 | #ifdef HAVE_SYS_STAT_H | |
79 | # include <sys/stat.h> | |
80 | #endif | |
81 | #ifdef HAVE_POLL_H | |
82 | #include <poll.h> | |
83 | #else | |
84 | # ifdef HAVE_SYS_POLL_H | |
85 | # include <sys/poll.h> | |
86 | # endif | |
87 | #endif | |
88 | #ifdef HAVE_SYS_TIME_H | |
89 | # include <sys/time.h> | |
90 | #endif | |
91 | #include <sys/wait.h> | |
92 | #include <sys/uio.h> | |
93 | ||
94 | #include <ctype.h> | |
95 | #include <dirent.h> | |
96 | #include <errno.h> | |
97 | #include <fcntl.h> | |
98 | #include <pwd.h> | |
99 | #include <signal.h> | |
100 | #include <stdarg.h> | |
101 | #include <stdio.h> | |
102 | #include <stdlib.h> | |
103 | #include <string.h> | |
104 | #include <time.h> | |
105 | #include <unistd.h> | |
106 | #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) | |
107 | #include <vis.h> | |
108 | #endif | |
109 | ||
110 | #include "xmalloc.h" | |
111 | #include "atomicio.h" | |
112 | #include "pathnames.h" | |
113 | #include "log.h" | |
114 | #include "misc.h" | |
115 | #include "progressmeter.h" | |
116 | ||
117 | extern char *__progname; | |
118 | ||
119 | #define COPY_BUFLEN 16384 | |
120 | ||
121 | int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout); | |
122 | ||
123 | void bwlimit(int); | |
124 | ||
125 | /* Struct for addargs */ | |
126 | arglist args; | |
127 | ||
128 | /* Bandwidth limit */ | |
129 | off_t limit_rate = 0; | |
130 | ||
131 | /* Name of current file being transferred. */ | |
132 | char *curfile; | |
133 | ||
134 | /* This is set to non-zero to enable verbose mode. */ | |
135 | int verbose_mode = 0; | |
136 | ||
137 | /* This is set to zero if the progressmeter is not desired. */ | |
138 | int showprogress = 1; | |
139 | ||
140 | /* This is the program to execute for the secured connection. ("ssh" or -S) */ | |
141 | char *ssh_program = _PATH_SSH_PROGRAM; | |
142 | ||
143 | /* This is used to store the pid of ssh_program */ | |
144 | pid_t do_cmd_pid = -1; | |
145 | ||
146 | static void | |
147 | killchild(int signo) | |
148 | { | |
149 | if (do_cmd_pid > 1) { | |
150 | kill(do_cmd_pid, signo ? signo : SIGTERM); | |
151 | waitpid(do_cmd_pid, NULL, 0); | |
152 | } | |
153 | ||
154 | if (signo) | |
155 | _exit(1); | |
156 | exit(1); | |
157 | } | |
158 | ||
159 | static int | |
160 | do_local_cmd(arglist *a) | |
161 | { | |
162 | u_int i; | |
163 | int status; | |
164 | pid_t pid; | |
165 | ||
166 | if (a->num == 0) | |
167 | fatal("do_local_cmd: no arguments"); | |
168 | ||
169 | if (verbose_mode) { | |
170 | fprintf(stderr, "Executing:"); | |
171 | for (i = 0; i < a->num; i++) | |
172 | fprintf(stderr, " %s", a->list[i]); | |
173 | fprintf(stderr, "\n"); | |
174 | } | |
175 | if ((pid = fork()) == -1) | |
176 | fatal("do_local_cmd: fork: %s", strerror(errno)); | |
177 | ||
178 | if (pid == 0) { | |
179 | execvp(a->list[0], a->list); | |
180 | perror(a->list[0]); | |
181 | exit(1); | |
182 | } | |
183 | ||
184 | do_cmd_pid = pid; | |
185 | signal(SIGTERM, killchild); | |
186 | signal(SIGINT, killchild); | |
187 | signal(SIGHUP, killchild); | |
188 | ||
189 | while (waitpid(pid, &status, 0) == -1) | |
190 | if (errno != EINTR) | |
191 | fatal("do_local_cmd: waitpid: %s", strerror(errno)); | |
192 | ||
193 | do_cmd_pid = -1; | |
194 | ||
195 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
196 | return (-1); | |
197 | ||
198 | return (0); | |
199 | } | |
200 | ||
201 | /* | |
202 | * This function executes the given command as the specified user on the | |
203 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
204 | * assigns the input and output file descriptors on success. | |
205 | */ | |
206 | ||
207 | int | |
208 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout) | |
209 | { | |
210 | int pin[2], pout[2], reserved[2]; | |
211 | ||
212 | if (verbose_mode) | |
213 | fprintf(stderr, | |
214 | "Executing: program %s host %s, user %s, command %s\n", | |
215 | ssh_program, host, | |
216 | remuser ? remuser : "(unspecified)", cmd); | |
217 | ||
218 | /* | |
219 | * Reserve two descriptors so that the real pipes won't get | |
220 | * descriptors 0 and 1 because that will screw up dup2 below. | |
221 | */ | |
222 | if (pipe(reserved) < 0) | |
223 | fatal("pipe: %s", strerror(errno)); | |
224 | ||
225 | /* Create a socket pair for communicating with ssh. */ | |
226 | if (pipe(pin) < 0) | |
227 | fatal("pipe: %s", strerror(errno)); | |
228 | if (pipe(pout) < 0) | |
229 | fatal("pipe: %s", strerror(errno)); | |
230 | ||
231 | /* Free the reserved descriptors. */ | |
232 | close(reserved[0]); | |
233 | close(reserved[1]); | |
234 | ||
235 | /* Fork a child to execute the command on the remote host using ssh. */ | |
236 | do_cmd_pid = fork(); | |
237 | if (do_cmd_pid == 0) { | |
238 | /* Child. */ | |
239 | close(pin[1]); | |
240 | close(pout[0]); | |
241 | dup2(pin[0], 0); | |
242 | dup2(pout[1], 1); | |
243 | close(pin[0]); | |
244 | close(pout[1]); | |
245 | ||
246 | replacearg(&args, 0, "%s", ssh_program); | |
247 | if (remuser != NULL) { | |
248 | addargs(&args, "-l"); | |
249 | addargs(&args, "%s", remuser); | |
250 | } | |
251 | addargs(&args, "--"); | |
252 | addargs(&args, "%s", host); | |
253 | addargs(&args, "%s", cmd); | |
254 | ||
255 | execvp(ssh_program, args.list); | |
256 | perror(ssh_program); | |
257 | exit(1); | |
258 | } else if (do_cmd_pid == -1) { | |
259 | fatal("fork: %s", strerror(errno)); | |
260 | } | |
261 | /* Parent. Close the other side, and return the local side. */ | |
262 | close(pin[0]); | |
263 | *fdout = pin[1]; | |
264 | close(pout[1]); | |
265 | *fdin = pout[0]; | |
266 | signal(SIGTERM, killchild); | |
267 | signal(SIGINT, killchild); | |
268 | signal(SIGHUP, killchild); | |
269 | return 0; | |
270 | } | |
271 | ||
272 | typedef struct { | |
273 | size_t cnt; | |
274 | char *buf; | |
275 | } BUF; | |
276 | ||
277 | BUF *allocbuf(BUF *, int, int); | |
278 | void lostconn(int); | |
279 | int okname(char *); | |
280 | void run_err(const char *,...); | |
281 | void verifydir(char *); | |
282 | ||
283 | struct passwd *pwd; | |
284 | uid_t userid; | |
285 | int errs, remin, remout; | |
286 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
287 | ||
288 | #define CMDNEEDS 64 | |
289 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
290 | ||
291 | int response(void); | |
292 | void rsource(char *, struct stat *); | |
293 | void sink(int, char *[]); | |
294 | void source(int, char *[]); | |
295 | void tolocal(int, char *[]); | |
296 | void toremote(char *, int, char *[]); | |
297 | size_t scpio(ssize_t (*)(int, void *, size_t), int, void *, size_t, off_t *); | |
298 | void usage(void); | |
299 | ||
300 | int | |
301 | main(int argc, char **argv) | |
302 | { | |
303 | int ch, fflag, tflag, status, n; | |
304 | double speed; | |
305 | char *targ, *endp, **newargv; | |
306 | extern char *optarg; | |
307 | extern int optind; | |
308 | ||
309 | /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ | |
310 | sanitise_stdfd(); | |
311 | ||
312 | /* Copy argv, because we modify it */ | |
313 | newargv = xcalloc(MAX(argc + 1, 1), sizeof(*newargv)); | |
314 | for (n = 0; n < argc; n++) | |
315 | newargv[n] = xstrdup(argv[n]); | |
316 | argv = newargv; | |
317 | ||
318 | __progname = ssh_get_progname(argv[0]); | |
319 | ||
320 | memset(&args, '\0', sizeof(args)); | |
321 | args.list = NULL; | |
322 | addargs(&args, "%s", ssh_program); | |
323 | addargs(&args, "-x"); | |
324 | addargs(&args, "-oForwardAgent no"); | |
325 | addargs(&args, "-oPermitLocalCommand no"); | |
326 | addargs(&args, "-oClearAllForwardings yes"); | |
327 | ||
328 | fflag = tflag = 0; | |
329 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246S:o:F:")) != -1) | |
330 | switch (ch) { | |
331 | /* User-visible flags. */ | |
332 | case '1': | |
333 | case '2': | |
334 | case '4': | |
335 | case '6': | |
336 | case 'C': | |
337 | addargs(&args, "-%c", ch); | |
338 | break; | |
339 | case 'o': | |
340 | case 'c': | |
341 | case 'i': | |
342 | case 'F': | |
343 | addargs(&args, "-%c", ch); | |
344 | addargs(&args, "%s", optarg); | |
345 | break; | |
346 | case 'P': | |
347 | addargs(&args, "-p"); | |
348 | addargs(&args, "%s", optarg); | |
349 | break; | |
350 | case 'B': | |
351 | addargs(&args, "-oBatchmode yes"); | |
352 | break; | |
353 | case 'l': | |
354 | speed = strtod(optarg, &endp); | |
355 | if (speed <= 0 || *endp != '\0') | |
356 | usage(); | |
357 | limit_rate = speed * 1024; | |
358 | break; | |
359 | case 'p': | |
360 | pflag = 1; | |
361 | break; | |
362 | case 'r': | |
363 | iamrecursive = 1; | |
364 | break; | |
365 | case 'S': | |
366 | ssh_program = xstrdup(optarg); | |
367 | break; | |
368 | case 'v': | |
369 | addargs(&args, "-v"); | |
370 | verbose_mode = 1; | |
371 | break; | |
372 | case 'q': | |
373 | addargs(&args, "-q"); | |
374 | showprogress = 0; | |
375 | break; | |
376 | ||
377 | /* Server options. */ | |
378 | case 'd': | |
379 | targetshouldbedirectory = 1; | |
380 | break; | |
381 | case 'f': /* "from" */ | |
382 | iamremote = 1; | |
383 | fflag = 1; | |
384 | break; | |
385 | case 't': /* "to" */ | |
386 | iamremote = 1; | |
387 | tflag = 1; | |
388 | #ifdef HAVE_CYGWIN | |
389 | setmode(0, O_BINARY); | |
390 | #endif | |
391 | break; | |
392 | default: | |
393 | usage(); | |
394 | } | |
395 | argc -= optind; | |
396 | argv += optind; | |
397 | ||
398 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
399 | fatal("unknown user %u", (u_int) userid); | |
400 | ||
401 | if (!isatty(STDOUT_FILENO)) | |
402 | showprogress = 0; | |
403 | ||
404 | remin = STDIN_FILENO; | |
405 | remout = STDOUT_FILENO; | |
406 | ||
407 | if (fflag) { | |
408 | /* Follow "protocol", send data. */ | |
409 | (void) response(); | |
410 | source(argc, argv); | |
411 | exit(errs != 0); | |
412 | } | |
413 | if (tflag) { | |
414 | /* Receive data. */ | |
415 | sink(argc, argv); | |
416 | exit(errs != 0); | |
417 | } | |
418 | if (argc < 2) | |
419 | usage(); | |
420 | if (argc > 2) | |
421 | targetshouldbedirectory = 1; | |
422 | ||
423 | remin = remout = -1; | |
424 | do_cmd_pid = -1; | |
425 | /* Command to be executed on remote system using "ssh". */ | |
426 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
427 | verbose_mode ? " -v" : "", | |
428 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
429 | targetshouldbedirectory ? " -d" : ""); | |
430 | ||
431 | (void) signal(SIGPIPE, lostconn); | |
432 | ||
433 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
434 | toremote(targ, argc, argv); | |
435 | else { | |
436 | if (targetshouldbedirectory) | |
437 | verifydir(argv[argc - 1]); | |
438 | tolocal(argc, argv); /* Dest is local host. */ | |
439 | } | |
440 | /* | |
441 | * Finally check the exit status of the ssh process, if one was forked | |
442 | * and no error has occurred yet | |
443 | */ | |
444 | if (do_cmd_pid != -1 && errs == 0) { | |
445 | if (remin != -1) | |
446 | (void) close(remin); | |
447 | if (remout != -1) | |
448 | (void) close(remout); | |
449 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
450 | errs = 1; | |
451 | else { | |
452 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
453 | errs = 1; | |
454 | } | |
455 | } | |
456 | exit(errs != 0); | |
457 | } | |
458 | ||
459 | /* | |
460 | * atomicio-like wrapper that also applies bandwidth limits and updates | |
461 | * the progressmeter counter. | |
462 | */ | |
463 | size_t | |
464 | scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c) | |
465 | { | |
466 | u_char *p = (u_char *)_p; | |
467 | size_t offset; | |
468 | ssize_t r; | |
469 | struct pollfd pfd; | |
470 | ||
471 | pfd.fd = fd; | |
472 | pfd.events = f == read ? POLLIN : POLLOUT; | |
473 | for (offset = 0; offset < l;) { | |
474 | r = f(fd, p + offset, l - offset); | |
475 | if (r == 0) { | |
476 | errno = EPIPE; | |
477 | return offset; | |
478 | } | |
479 | if (r < 0) { | |
480 | if (errno == EINTR) | |
481 | continue; | |
482 | if (errno == EAGAIN || errno == EWOULDBLOCK) { | |
483 | (void)poll(&pfd, 1, -1); /* Ignore errors */ | |
484 | continue; | |
485 | } | |
486 | return offset; | |
487 | } | |
488 | offset += (size_t)r; | |
489 | *c += (off_t)r; | |
490 | if (limit_rate) | |
491 | bwlimit(r); | |
492 | } | |
493 | return offset; | |
494 | } | |
495 | ||
496 | void | |
497 | toremote(char *targ, int argc, char **argv) | |
498 | { | |
499 | char *bp, *host, *src, *suser, *thost, *tuser, *arg; | |
500 | arglist alist; | |
501 | int i; | |
502 | ||
503 | memset(&alist, '\0', sizeof(alist)); | |
504 | alist.list = NULL; | |
505 | ||
506 | *targ++ = 0; | |
507 | if (*targ == 0) | |
508 | targ = "."; | |
509 | ||
510 | arg = xstrdup(argv[argc - 1]); | |
511 | if ((thost = strrchr(arg, '@'))) { | |
512 | /* user@host */ | |
513 | *thost++ = 0; | |
514 | tuser = arg; | |
515 | if (*tuser == '\0') | |
516 | tuser = NULL; | |
517 | } else { | |
518 | thost = arg; | |
519 | tuser = NULL; | |
520 | } | |
521 | ||
522 | if (tuser != NULL && !okname(tuser)) { | |
523 | xfree(arg); | |
524 | return; | |
525 | } | |
526 | ||
527 | for (i = 0; i < argc - 1; i++) { | |
528 | src = colon(argv[i]); | |
529 | if (src) { /* remote to remote */ | |
530 | freeargs(&alist); | |
531 | addargs(&alist, "%s", ssh_program); | |
532 | if (verbose_mode) | |
533 | addargs(&alist, "-v"); | |
534 | addargs(&alist, "-x"); | |
535 | addargs(&alist, "-oClearAllForwardings yes"); | |
536 | addargs(&alist, "-n"); | |
537 | ||
538 | *src++ = 0; | |
539 | if (*src == 0) | |
540 | src = "."; | |
541 | host = strrchr(argv[i], '@'); | |
542 | ||
543 | if (host) { | |
544 | *host++ = 0; | |
545 | host = cleanhostname(host); | |
546 | suser = argv[i]; | |
547 | if (*suser == '\0') | |
548 | suser = pwd->pw_name; | |
549 | else if (!okname(suser)) | |
550 | continue; | |
551 | addargs(&alist, "-l"); | |
552 | addargs(&alist, "%s", suser); | |
553 | } else { | |
554 | host = cleanhostname(argv[i]); | |
555 | } | |
556 | addargs(&alist, "--"); | |
557 | addargs(&alist, "%s", host); | |
558 | addargs(&alist, "%s", cmd); | |
559 | addargs(&alist, "%s", src); | |
560 | addargs(&alist, "%s%s%s:%s", | |
561 | tuser ? tuser : "", tuser ? "@" : "", | |
562 | thost, targ); | |
563 | if (do_local_cmd(&alist) != 0) | |
564 | errs = 1; | |
565 | } else { /* local to remote */ | |
566 | if (remin == -1) { | |
567 | xasprintf(&bp, "%s -t -- %s", cmd, targ); | |
568 | host = cleanhostname(thost); | |
569 | if (do_cmd(host, tuser, bp, &remin, | |
570 | &remout) < 0) | |
571 | exit(1); | |
572 | if (response() < 0) | |
573 | exit(1); | |
574 | (void) xfree(bp); | |
575 | } | |
576 | source(1, argv + i); | |
577 | } | |
578 | } | |
579 | xfree(arg); | |
580 | } | |
581 | ||
582 | void | |
583 | tolocal(int argc, char **argv) | |
584 | { | |
585 | char *bp, *host, *src, *suser; | |
586 | arglist alist; | |
587 | int i; | |
588 | ||
589 | memset(&alist, '\0', sizeof(alist)); | |
590 | alist.list = NULL; | |
591 | ||
592 | for (i = 0; i < argc - 1; i++) { | |
593 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
594 | freeargs(&alist); | |
595 | addargs(&alist, "%s", _PATH_CP); | |
596 | if (iamrecursive) | |
597 | addargs(&alist, "-r"); | |
598 | if (pflag) | |
599 | addargs(&alist, "-p"); | |
600 | addargs(&alist, "--"); | |
601 | addargs(&alist, "%s", argv[i]); | |
602 | addargs(&alist, "%s", argv[argc-1]); | |
603 | if (do_local_cmd(&alist)) | |
604 | ++errs; | |
605 | continue; | |
606 | } | |
607 | *src++ = 0; | |
608 | if (*src == 0) | |
609 | src = "."; | |
610 | if ((host = strrchr(argv[i], '@')) == NULL) { | |
611 | host = argv[i]; | |
612 | suser = NULL; | |
613 | } else { | |
614 | *host++ = 0; | |
615 | suser = argv[i]; | |
616 | if (*suser == '\0') | |
617 | suser = pwd->pw_name; | |
618 | } | |
619 | host = cleanhostname(host); | |
620 | xasprintf(&bp, "%s -f -- %s", cmd, src); | |
621 | if (do_cmd(host, suser, bp, &remin, &remout) < 0) { | |
622 | (void) xfree(bp); | |
623 | ++errs; | |
624 | continue; | |
625 | } | |
626 | xfree(bp); | |
627 | sink(1, argv + argc - 1); | |
628 | (void) close(remin); | |
629 | remin = remout = -1; | |
630 | } | |
631 | } | |
632 | ||
633 | void | |
634 | source(int argc, char **argv) | |
635 | { | |
636 | struct stat stb; | |
637 | static BUF buffer; | |
638 | BUF *bp; | |
639 | off_t i, statbytes; | |
640 | size_t amt; | |
641 | int fd = -1, haderr, indx; | |
642 | char *last, *name, buf[2048], encname[MAXPATHLEN]; | |
643 | int len; | |
644 | ||
645 | for (indx = 0; indx < argc; ++indx) { | |
646 | name = argv[indx]; | |
647 | statbytes = 0; | |
648 | len = strlen(name); | |
649 | while (len > 1 && name[len-1] == '/') | |
650 | name[--len] = '\0'; | |
651 | if ((fd = open(name, O_RDONLY|O_NONBLOCK, 0)) < 0) | |
652 | goto syserr; | |
653 | if (strchr(name, '\n') != NULL) { | |
654 | strnvis(encname, name, sizeof(encname), VIS_NL); | |
655 | name = encname; | |
656 | } | |
657 | if (fstat(fd, &stb) < 0) { | |
658 | syserr: run_err("%s: %s", name, strerror(errno)); | |
659 | goto next; | |
660 | } | |
661 | if (stb.st_size < 0) { | |
662 | run_err("%s: %s", name, "Negative file size"); | |
663 | goto next; | |
664 | } | |
665 | unset_nonblock(fd); | |
666 | switch (stb.st_mode & S_IFMT) { | |
667 | case S_IFREG: | |
668 | break; | |
669 | case S_IFDIR: | |
670 | if (iamrecursive) { | |
671 | rsource(name, &stb); | |
672 | goto next; | |
673 | } | |
674 | /* FALLTHROUGH */ | |
675 | default: | |
676 | run_err("%s: not a regular file", name); | |
677 | goto next; | |
678 | } | |
679 | if ((last = strrchr(name, '/')) == NULL) | |
680 | last = name; | |
681 | else | |
682 | ++last; | |
683 | curfile = last; | |
684 | if (pflag) { | |
685 | /* | |
686 | * Make it compatible with possible future | |
687 | * versions expecting microseconds. | |
688 | */ | |
689 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
690 | (u_long) (stb.st_mtime < 0 ? 0 : stb.st_mtime), | |
691 | (u_long) (stb.st_atime < 0 ? 0 : stb.st_atime)); | |
692 | if (verbose_mode) { | |
693 | fprintf(stderr, "File mtime %ld atime %ld\n", | |
694 | (long)stb.st_mtime, (long)stb.st_atime); | |
695 | fprintf(stderr, "Sending file timestamps: %s", | |
696 | buf); | |
697 | } | |
698 | (void) atomicio(vwrite, remout, buf, strlen(buf)); | |
699 | if (response() < 0) | |
700 | goto next; | |
701 | } | |
702 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
703 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", | |
704 | (u_int) (stb.st_mode & FILEMODEMASK), | |
705 | (long long)stb.st_size, last); | |
706 | if (verbose_mode) { | |
707 | fprintf(stderr, "Sending file modes: %s", buf); | |
708 | } | |
709 | (void) atomicio(vwrite, remout, buf, strlen(buf)); | |
710 | if (response() < 0) | |
711 | goto next; | |
712 | if ((bp = allocbuf(&buffer, fd, COPY_BUFLEN)) == NULL) { | |
713 | next: if (fd != -1) { | |
714 | (void) close(fd); | |
715 | fd = -1; | |
716 | } | |
717 | continue; | |
718 | } | |
719 | if (showprogress) | |
720 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
721 | set_nonblock(remout); | |
722 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
723 | amt = bp->cnt; | |
724 | if (i + (off_t)amt > stb.st_size) | |
725 | amt = stb.st_size - i; | |
726 | if (!haderr) { | |
727 | if (atomicio(read, fd, bp->buf, amt) != amt) | |
728 | haderr = errno; | |
729 | } | |
730 | /* Keep writing after error to retain sync */ | |
731 | if (haderr) { | |
732 | (void)atomicio(vwrite, remout, bp->buf, amt); | |
733 | continue; | |
734 | } | |
735 | if (scpio(vwrite, remout, bp->buf, amt, | |
736 | &statbytes) != amt) | |
737 | haderr = errno; | |
738 | } | |
739 | unset_nonblock(remout); | |
740 | if (showprogress) | |
741 | stop_progress_meter(); | |
742 | ||
743 | if (fd != -1) { | |
744 | if (close(fd) < 0 && !haderr) | |
745 | haderr = errno; | |
746 | fd = -1; | |
747 | } | |
748 | if (!haderr) | |
749 | (void) atomicio(vwrite, remout, "", 1); | |
750 | else | |
751 | run_err("%s: %s", name, strerror(haderr)); | |
752 | (void) response(); | |
753 | } | |
754 | } | |
755 | ||
756 | void | |
757 | rsource(char *name, struct stat *statp) | |
758 | { | |
759 | DIR *dirp; | |
760 | struct dirent *dp; | |
761 | char *last, *vect[1], path[1100]; | |
762 | ||
763 | if (!(dirp = opendir(name))) { | |
764 | run_err("%s: %s", name, strerror(errno)); | |
765 | return; | |
766 | } | |
767 | last = strrchr(name, '/'); | |
768 | if (last == 0) | |
769 | last = name; | |
770 | else | |
771 | last++; | |
772 | if (pflag) { | |
773 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
774 | (u_long) statp->st_mtime, | |
775 | (u_long) statp->st_atime); | |
776 | (void) atomicio(vwrite, remout, path, strlen(path)); | |
777 | if (response() < 0) { | |
778 | closedir(dirp); | |
779 | return; | |
780 | } | |
781 | } | |
782 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
783 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
784 | if (verbose_mode) | |
785 | fprintf(stderr, "Entering directory: %s", path); | |
786 | (void) atomicio(vwrite, remout, path, strlen(path)); | |
787 | if (response() < 0) { | |
788 | closedir(dirp); | |
789 | return; | |
790 | } | |
791 | while ((dp = readdir(dirp)) != NULL) { | |
792 | if (dp->d_ino == 0) | |
793 | continue; | |
794 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
795 | continue; | |
796 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
797 | run_err("%s/%s: name too long", name, dp->d_name); | |
798 | continue; | |
799 | } | |
800 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
801 | vect[0] = path; | |
802 | source(1, vect); | |
803 | } | |
804 | (void) closedir(dirp); | |
805 | (void) atomicio(vwrite, remout, "E\n", 2); | |
806 | (void) response(); | |
807 | } | |
808 | ||
809 | void | |
810 | bwlimit(int amount) | |
811 | { | |
812 | static struct timeval bwstart, bwend; | |
813 | static int lamt, thresh = 16384; | |
814 | u_int64_t waitlen; | |
815 | struct timespec ts, rm; | |
816 | ||
817 | if (!timerisset(&bwstart)) { | |
818 | gettimeofday(&bwstart, NULL); | |
819 | return; | |
820 | } | |
821 | ||
822 | lamt += amount; | |
823 | if (lamt < thresh) | |
824 | return; | |
825 | ||
826 | gettimeofday(&bwend, NULL); | |
827 | timersub(&bwend, &bwstart, &bwend); | |
828 | if (!timerisset(&bwend)) | |
829 | return; | |
830 | ||
831 | lamt *= 8; | |
832 | waitlen = (double)1000000L * lamt / limit_rate; | |
833 | ||
834 | bwstart.tv_sec = waitlen / 1000000L; | |
835 | bwstart.tv_usec = waitlen % 1000000L; | |
836 | ||
837 | if (timercmp(&bwstart, &bwend, >)) { | |
838 | timersub(&bwstart, &bwend, &bwend); | |
839 | ||
840 | /* Adjust the wait time */ | |
841 | if (bwend.tv_sec) { | |
842 | thresh /= 2; | |
843 | if (thresh < 2048) | |
844 | thresh = 2048; | |
845 | } else if (bwend.tv_usec < 10000) { | |
846 | thresh *= 2; | |
847 | if (thresh > COPY_BUFLEN * 4) | |
848 | thresh = COPY_BUFLEN * 4; | |
849 | } | |
850 | ||
851 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
852 | while (nanosleep(&ts, &rm) == -1) { | |
853 | if (errno != EINTR) | |
854 | break; | |
855 | ts = rm; | |
856 | } | |
857 | } | |
858 | ||
859 | lamt = 0; | |
860 | gettimeofday(&bwstart, NULL); | |
861 | } | |
862 | ||
863 | void | |
864 | sink(int argc, char **argv) | |
865 | { | |
866 | static BUF buffer; | |
867 | struct stat stb; | |
868 | enum { | |
869 | YES, NO, DISPLAYED | |
870 | } wrerr; | |
871 | BUF *bp; | |
872 | off_t i; | |
873 | size_t j, count; | |
874 | int amt, exists, first, ofd; | |
875 | mode_t mode, omode, mask; | |
876 | off_t size, statbytes; | |
877 | int setimes, targisdir, wrerrno = 0; | |
878 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
879 | struct timeval tv[2]; | |
880 | ||
881 | #define atime tv[0] | |
882 | #define mtime tv[1] | |
883 | #define SCREWUP(str) { why = str; goto screwup; } | |
884 | ||
885 | setimes = targisdir = 0; | |
886 | mask = umask(0); | |
887 | if (!pflag) | |
888 | (void) umask(mask); | |
889 | if (argc != 1) { | |
890 | run_err("ambiguous target"); | |
891 | exit(1); | |
892 | } | |
893 | targ = *argv; | |
894 | if (targetshouldbedirectory) | |
895 | verifydir(targ); | |
896 | ||
897 | (void) atomicio(vwrite, remout, "", 1); | |
898 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) | |
899 | targisdir = 1; | |
900 | for (first = 1;; first = 0) { | |
901 | cp = buf; | |
902 | if (atomicio(read, remin, cp, 1) != 1) | |
903 | return; | |
904 | if (*cp++ == '\n') | |
905 | SCREWUP("unexpected <newline>"); | |
906 | do { | |
907 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
908 | SCREWUP("lost connection"); | |
909 | *cp++ = ch; | |
910 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
911 | *cp = 0; | |
912 | if (verbose_mode) | |
913 | fprintf(stderr, "Sink: %s", buf); | |
914 | ||
915 | if (buf[0] == '\01' || buf[0] == '\02') { | |
916 | if (iamremote == 0) | |
917 | (void) atomicio(vwrite, STDERR_FILENO, | |
918 | buf + 1, strlen(buf + 1)); | |
919 | if (buf[0] == '\02') | |
920 | exit(1); | |
921 | ++errs; | |
922 | continue; | |
923 | } | |
924 | if (buf[0] == 'E') { | |
925 | (void) atomicio(vwrite, remout, "", 1); | |
926 | return; | |
927 | } | |
928 | if (ch == '\n') | |
929 | *--cp = 0; | |
930 | ||
931 | cp = buf; | |
932 | if (*cp == 'T') { | |
933 | setimes++; | |
934 | cp++; | |
935 | mtime.tv_sec = strtol(cp, &cp, 10); | |
936 | if (!cp || *cp++ != ' ') | |
937 | SCREWUP("mtime.sec not delimited"); | |
938 | mtime.tv_usec = strtol(cp, &cp, 10); | |
939 | if (!cp || *cp++ != ' ') | |
940 | SCREWUP("mtime.usec not delimited"); | |
941 | atime.tv_sec = strtol(cp, &cp, 10); | |
942 | if (!cp || *cp++ != ' ') | |
943 | SCREWUP("atime.sec not delimited"); | |
944 | atime.tv_usec = strtol(cp, &cp, 10); | |
945 | if (!cp || *cp++ != '\0') | |
946 | SCREWUP("atime.usec not delimited"); | |
947 | (void) atomicio(vwrite, remout, "", 1); | |
948 | continue; | |
949 | } | |
950 | if (*cp != 'C' && *cp != 'D') { | |
951 | /* | |
952 | * Check for the case "rcp remote:foo\* local:bar". | |
953 | * In this case, the line "No match." can be returned | |
954 | * by the shell before the rcp command on the remote is | |
955 | * executed so the ^Aerror_message convention isn't | |
956 | * followed. | |
957 | */ | |
958 | if (first) { | |
959 | run_err("%s", cp); | |
960 | exit(1); | |
961 | } | |
962 | SCREWUP("expected control record"); | |
963 | } | |
964 | mode = 0; | |
965 | for (++cp; cp < buf + 5; cp++) { | |
966 | if (*cp < '0' || *cp > '7') | |
967 | SCREWUP("bad mode"); | |
968 | mode = (mode << 3) | (*cp - '0'); | |
969 | } | |
970 | if (*cp++ != ' ') | |
971 | SCREWUP("mode not delimited"); | |
972 | ||
973 | for (size = 0; isdigit(*cp);) | |
974 | size = size * 10 + (*cp++ - '0'); | |
975 | if (*cp++ != ' ') | |
976 | SCREWUP("size not delimited"); | |
977 | if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { | |
978 | run_err("error: unexpected filename: %s", cp); | |
979 | exit(1); | |
980 | } | |
981 | if (targisdir) { | |
982 | static char *namebuf; | |
983 | static size_t cursize; | |
984 | size_t need; | |
985 | ||
986 | need = strlen(targ) + strlen(cp) + 250; | |
987 | if (need > cursize) { | |
988 | if (namebuf) | |
989 | xfree(namebuf); | |
990 | namebuf = xmalloc(need); | |
991 | cursize = need; | |
992 | } | |
993 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
994 | strcmp(targ, "/") ? "/" : "", cp); | |
995 | np = namebuf; | |
996 | } else | |
997 | np = targ; | |
998 | curfile = cp; | |
999 | exists = stat(np, &stb) == 0; | |
1000 | if (buf[0] == 'D') { | |
1001 | int mod_flag = pflag; | |
1002 | if (!iamrecursive) | |
1003 | SCREWUP("received directory without -r"); | |
1004 | if (exists) { | |
1005 | if (!S_ISDIR(stb.st_mode)) { | |
1006 | errno = ENOTDIR; | |
1007 | goto bad; | |
1008 | } | |
1009 | if (pflag) | |
1010 | (void) chmod(np, mode); | |
1011 | } else { | |
1012 | /* Handle copying from a read-only | |
1013 | directory */ | |
1014 | mod_flag = 1; | |
1015 | if (mkdir(np, mode | S_IRWXU) < 0) | |
1016 | goto bad; | |
1017 | } | |
1018 | vect[0] = xstrdup(np); | |
1019 | sink(1, vect); | |
1020 | if (setimes) { | |
1021 | setimes = 0; | |
1022 | if (utimes(vect[0], tv) < 0) | |
1023 | run_err("%s: set times: %s", | |
1024 | vect[0], strerror(errno)); | |
1025 | } | |
1026 | if (mod_flag) | |
1027 | (void) chmod(vect[0], mode); | |
1028 | if (vect[0]) | |
1029 | xfree(vect[0]); | |
1030 | continue; | |
1031 | } | |
1032 | omode = mode; | |
1033 | mode |= S_IWRITE; | |
1034 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
1035 | bad: run_err("%s: %s", np, strerror(errno)); | |
1036 | continue; | |
1037 | } | |
1038 | (void) atomicio(vwrite, remout, "", 1); | |
1039 | if ((bp = allocbuf(&buffer, ofd, COPY_BUFLEN)) == NULL) { | |
1040 | (void) close(ofd); | |
1041 | continue; | |
1042 | } | |
1043 | cp = bp->buf; | |
1044 | wrerr = NO; | |
1045 | ||
1046 | statbytes = 0; | |
1047 | if (showprogress) | |
1048 | start_progress_meter(curfile, size, &statbytes); | |
1049 | set_nonblock(remin); | |
1050 | for (count = i = 0; i < size; i += bp->cnt) { | |
1051 | amt = bp->cnt; | |
1052 | if (i + amt > size) | |
1053 | amt = size - i; | |
1054 | count += amt; | |
1055 | do { | |
1056 | j = scpio(read, remin, cp, amt, &statbytes); | |
1057 | if (j == 0) { | |
1058 | run_err("%s", j != EPIPE ? | |
1059 | strerror(errno) : | |
1060 | "dropped connection"); | |
1061 | exit(1); | |
1062 | } | |
1063 | amt -= j; | |
1064 | cp += j; | |
1065 | } while (amt > 0); | |
1066 | ||
1067 | if (count == bp->cnt) { | |
1068 | /* Keep reading so we stay sync'd up. */ | |
1069 | if (wrerr == NO) { | |
1070 | if (atomicio(vwrite, ofd, bp->buf, | |
1071 | count) != count) { | |
1072 | wrerr = YES; | |
1073 | wrerrno = errno; | |
1074 | } | |
1075 | } | |
1076 | count = 0; | |
1077 | cp = bp->buf; | |
1078 | } | |
1079 | } | |
1080 | unset_nonblock(remin); | |
1081 | if (showprogress) | |
1082 | stop_progress_meter(); | |
1083 | if (count != 0 && wrerr == NO && | |
1084 | atomicio(vwrite, ofd, bp->buf, count) != count) { | |
1085 | wrerr = YES; | |
1086 | wrerrno = errno; | |
1087 | } | |
1088 | if (wrerr == NO && (!exists || S_ISREG(stb.st_mode)) && | |
1089 | ftruncate(ofd, size) != 0) { | |
1090 | run_err("%s: truncate: %s", np, strerror(errno)); | |
1091 | wrerr = DISPLAYED; | |
1092 | } | |
1093 | if (pflag) { | |
1094 | if (exists || omode != mode) | |
1095 | #ifdef HAVE_FCHMOD | |
1096 | if (fchmod(ofd, omode)) { | |
1097 | #else /* HAVE_FCHMOD */ | |
1098 | if (chmod(np, omode)) { | |
1099 | #endif /* HAVE_FCHMOD */ | |
1100 | run_err("%s: set mode: %s", | |
1101 | np, strerror(errno)); | |
1102 | wrerr = DISPLAYED; | |
1103 | } | |
1104 | } else { | |
1105 | if (!exists && omode != mode) | |
1106 | #ifdef HAVE_FCHMOD | |
1107 | if (fchmod(ofd, omode & ~mask)) { | |
1108 | #else /* HAVE_FCHMOD */ | |
1109 | if (chmod(np, omode & ~mask)) { | |
1110 | #endif /* HAVE_FCHMOD */ | |
1111 | run_err("%s: set mode: %s", | |
1112 | np, strerror(errno)); | |
1113 | wrerr = DISPLAYED; | |
1114 | } | |
1115 | } | |
1116 | if (close(ofd) == -1) { | |
1117 | wrerr = YES; | |
1118 | wrerrno = errno; | |
1119 | } | |
1120 | (void) response(); | |
1121 | if (setimes && wrerr == NO) { | |
1122 | setimes = 0; | |
1123 | if (utimes(np, tv) < 0) { | |
1124 | run_err("%s: set times: %s", | |
1125 | np, strerror(errno)); | |
1126 | wrerr = DISPLAYED; | |
1127 | } | |
1128 | } | |
1129 | switch (wrerr) { | |
1130 | case YES: | |
1131 | run_err("%s: %s", np, strerror(wrerrno)); | |
1132 | break; | |
1133 | case NO: | |
1134 | (void) atomicio(vwrite, remout, "", 1); | |
1135 | break; | |
1136 | case DISPLAYED: | |
1137 | break; | |
1138 | } | |
1139 | } | |
1140 | screwup: | |
1141 | run_err("protocol error: %s", why); | |
1142 | exit(1); | |
1143 | } | |
1144 | ||
1145 | int | |
1146 | response(void) | |
1147 | { | |
1148 | char ch, *cp, resp, rbuf[2048]; | |
1149 | ||
1150 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
1151 | lostconn(0); | |
1152 | ||
1153 | cp = rbuf; | |
1154 | switch (resp) { | |
1155 | case 0: /* ok */ | |
1156 | return (0); | |
1157 | default: | |
1158 | *cp++ = resp; | |
1159 | /* FALLTHROUGH */ | |
1160 | case 1: /* error, followed by error msg */ | |
1161 | case 2: /* fatal error, "" */ | |
1162 | do { | |
1163 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1164 | lostconn(0); | |
1165 | *cp++ = ch; | |
1166 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1167 | ||
1168 | if (!iamremote) | |
1169 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); | |
1170 | ++errs; | |
1171 | if (resp == 1) | |
1172 | return (-1); | |
1173 | exit(1); | |
1174 | } | |
1175 | /* NOTREACHED */ | |
1176 | } | |
1177 | ||
1178 | void | |
1179 | usage(void) | |
1180 | { | |
1181 | (void) fprintf(stderr, | |
1182 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" | |
1183 | " [-l limit] [-o ssh_option] [-P port] [-S program]\n" | |
1184 | " [[user@]host1:]file1 ... [[user@]host2:]file2\n"); | |
1185 | exit(1); | |
1186 | } | |
1187 | ||
1188 | void | |
1189 | run_err(const char *fmt,...) | |
1190 | { | |
1191 | static FILE *fp; | |
1192 | va_list ap; | |
1193 | ||
1194 | ++errs; | |
1195 | if (fp != NULL || (remout != -1 && (fp = fdopen(remout, "w")))) { | |
1196 | (void) fprintf(fp, "%c", 0x01); | |
1197 | (void) fprintf(fp, "scp: "); | |
1198 | va_start(ap, fmt); | |
1199 | (void) vfprintf(fp, fmt, ap); | |
1200 | va_end(ap); | |
1201 | (void) fprintf(fp, "\n"); | |
1202 | (void) fflush(fp); | |
1203 | } | |
1204 | ||
1205 | if (!iamremote) { | |
1206 | va_start(ap, fmt); | |
1207 | vfprintf(stderr, fmt, ap); | |
1208 | va_end(ap); | |
1209 | fprintf(stderr, "\n"); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | void | |
1214 | verifydir(char *cp) | |
1215 | { | |
1216 | struct stat stb; | |
1217 | ||
1218 | if (!stat(cp, &stb)) { | |
1219 | if (S_ISDIR(stb.st_mode)) | |
1220 | return; | |
1221 | errno = ENOTDIR; | |
1222 | } | |
1223 | run_err("%s: %s", cp, strerror(errno)); | |
1224 | killchild(0); | |
1225 | } | |
1226 | ||
1227 | int | |
1228 | okname(char *cp0) | |
1229 | { | |
1230 | int c; | |
1231 | char *cp; | |
1232 | ||
1233 | cp = cp0; | |
1234 | do { | |
1235 | c = (int)*cp; | |
1236 | if (c & 0200) | |
1237 | goto bad; | |
1238 | if (!isalpha(c) && !isdigit(c)) { | |
1239 | switch (c) { | |
1240 | case '\'': | |
1241 | case '"': | |
1242 | case '`': | |
1243 | case ' ': | |
1244 | case '#': | |
1245 | goto bad; | |
1246 | default: | |
1247 | break; | |
1248 | } | |
1249 | } | |
1250 | } while (*++cp); | |
1251 | return (1); | |
1252 | ||
1253 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1254 | return (0); | |
1255 | } | |
1256 | ||
1257 | BUF * | |
1258 | allocbuf(BUF *bp, int fd, int blksize) | |
1259 | { | |
1260 | size_t size; | |
1261 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1262 | struct stat stb; | |
1263 | ||
1264 | if (fstat(fd, &stb) < 0) { | |
1265 | run_err("fstat: %s", strerror(errno)); | |
1266 | return (0); | |
1267 | } | |
1268 | size = roundup(stb.st_blksize, blksize); | |
1269 | if (size == 0) | |
1270 | size = blksize; | |
1271 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1272 | size = blksize; | |
1273 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1274 | if (bp->cnt >= size) | |
1275 | return (bp); | |
1276 | if (bp->buf == NULL) | |
1277 | bp->buf = xmalloc(size); | |
1278 | else | |
1279 | bp->buf = xrealloc(bp->buf, 1, size); | |
1280 | memset(bp->buf, 0, size); | |
1281 | bp->cnt = size; | |
1282 | return (bp); | |
1283 | } | |
1284 | ||
1285 | void | |
1286 | lostconn(int signo) | |
1287 | { | |
1288 | if (!iamremote) | |
1289 | write(STDERR_FILENO, "lost connection\n", 16); | |
1290 | if (signo) | |
1291 | _exit(1); | |
1292 | else | |
1293 | exit(1); | |
1294 | } |