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Commit | Line | Data |
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3c0ef626 | 1 | /* |
2 | * scp - secure remote copy. This is basically patched BSD rcp which | |
3 | * uses ssh to do the data transfer (instead of using rcmd). | |
4 | * | |
5 | * NOTE: This version should NOT be suid root. (This uses ssh to | |
6 | * do the transfer and ssh has the necessary privileges.) | |
7 | * | |
8 | * 1995 Timo Rinne <tri@iki.fi>, Tatu Ylonen <ylo@cs.hut.fi> | |
9 | * | |
10 | * As far as I am concerned, the code I have written for this software | |
11 | * can be used freely for any purpose. Any derived versions of this | |
12 | * software must be clearly marked as such, and if the derived work is | |
13 | * incompatible with the protocol description in the RFC file, it must be | |
14 | * called by a name other than "ssh" or "Secure Shell". | |
15 | */ | |
16 | /* | |
17 | * Copyright (c) 1999 Theo de Raadt. All rights reserved. | |
18 | * Copyright (c) 1999 Aaron Campbell. All rights reserved. | |
19 | * | |
20 | * Redistribution and use in source and binary forms, with or without | |
21 | * modification, are permitted provided that the following conditions | |
22 | * are met: | |
23 | * 1. Redistributions of source code must retain the above copyright | |
24 | * notice, this list of conditions and the following disclaimer. | |
25 | * 2. Redistributions in binary form must reproduce the above copyright | |
26 | * notice, this list of conditions and the following disclaimer in the | |
27 | * documentation and/or other materials provided with the distribution. | |
28 | * | |
29 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
30 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
31 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
32 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
33 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
34 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
35 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
36 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
37 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
38 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
39 | */ | |
40 | ||
41 | /* | |
42 | * Parts from: | |
43 | * | |
44 | * Copyright (c) 1983, 1990, 1992, 1993, 1995 | |
45 | * The Regents of the University of California. All rights reserved. | |
46 | * | |
47 | * Redistribution and use in source and binary forms, with or without | |
48 | * modification, are permitted provided that the following conditions | |
49 | * are met: | |
50 | * 1. Redistributions of source code must retain the above copyright | |
51 | * notice, this list of conditions and the following disclaimer. | |
52 | * 2. Redistributions in binary form must reproduce the above copyright | |
53 | * notice, this list of conditions and the following disclaimer in the | |
54 | * documentation and/or other materials provided with the distribution. | |
473db5ab | 55 | * 3. Neither the name of the University nor the names of its contributors |
3c0ef626 | 56 | * may be used to endorse or promote products derived from this software |
57 | * without specific prior written permission. | |
58 | * | |
59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
69 | * SUCH DAMAGE. | |
70 | * | |
71 | */ | |
72 | ||
73 | #include "includes.h" | |
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; | |
a7213e65 | 281 | while ((ch = getopt(argc, argv, "dfl:prtvBCc:i:P:q1246zS:o:F:w:")) != -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; | |
a7213e65 | 343 | case 'w': |
344 | addargs(&args, "-w%s", optarg); | |
345 | break; | |
3c0ef626 | 346 | default: |
347 | usage(); | |
348 | } | |
349 | argc -= optind; | |
350 | argv += optind; | |
351 | ||
352 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
473db5ab | 353 | fatal("unknown user %u", (u_int) userid); |
3c0ef626 | 354 | |
355 | if (!isatty(STDERR_FILENO)) | |
356 | showprogress = 0; | |
357 | ||
358 | remin = STDIN_FILENO; | |
359 | remout = STDOUT_FILENO; | |
360 | ||
361 | if (fflag) { | |
362 | /* Follow "protocol", send data. */ | |
363 | (void) response(); | |
364 | source(argc, argv); | |
365 | exit(errs != 0); | |
366 | } | |
367 | if (tflag) { | |
368 | /* Receive data. */ | |
369 | sink(argc, argv); | |
370 | exit(errs != 0); | |
371 | } | |
372 | if (argc < 2) | |
373 | usage(); | |
374 | if (argc > 2) | |
375 | targetshouldbedirectory = 1; | |
376 | ||
377 | remin = remout = -1; | |
473db5ab | 378 | do_cmd_pid = -1; |
3c0ef626 | 379 | /* Command to be executed on remote system using "ssh". */ |
380 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
381 | verbose_mode ? " -v" : "", | |
382 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
383 | targetshouldbedirectory ? " -d" : ""); | |
384 | ||
385 | (void) signal(SIGPIPE, lostconn); | |
386 | ||
387 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
388 | toremote(targ, argc, argv); | |
389 | else { | |
3c0ef626 | 390 | if (targetshouldbedirectory) |
391 | verifydir(argv[argc - 1]); | |
08822d99 | 392 | tolocal(argc, argv); /* Dest is local host. */ |
3c0ef626 | 393 | } |
473db5ab | 394 | /* |
395 | * Finally check the exit status of the ssh process, if one was forked | |
396 | * and no error has occured yet | |
397 | */ | |
398 | if (do_cmd_pid != -1 && errs == 0) { | |
399 | if (remin != -1) | |
400 | (void) close(remin); | |
401 | if (remout != -1) | |
402 | (void) close(remout); | |
403 | if (waitpid(do_cmd_pid, &status, 0) == -1) | |
404 | errs = 1; | |
405 | else { | |
406 | if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) | |
407 | errs = 1; | |
408 | } | |
409 | } | |
3c0ef626 | 410 | exit(errs != 0); |
411 | } | |
412 | ||
413 | void | |
473db5ab | 414 | toremote(char *targ, int argc, char **argv) |
3c0ef626 | 415 | { |
416 | int i, len; | |
473db5ab | 417 | char *bp, *host, *src, *suser, *thost, *tuser, *arg; |
08822d99 | 418 | arglist alist; |
419 | ||
420 | memset(&alist, '\0', sizeof(alist)); | |
421 | alist.list = NULL; | |
3c0ef626 | 422 | |
423 | *targ++ = 0; | |
424 | if (*targ == 0) | |
425 | targ = "."; | |
426 | ||
473db5ab | 427 | arg = xstrdup(argv[argc - 1]); |
428 | if ((thost = strrchr(arg, '@'))) { | |
3c0ef626 | 429 | /* user@host */ |
430 | *thost++ = 0; | |
473db5ab | 431 | tuser = arg; |
3c0ef626 | 432 | if (*tuser == '\0') |
433 | tuser = NULL; | |
3c0ef626 | 434 | } else { |
473db5ab | 435 | thost = arg; |
3c0ef626 | 436 | tuser = NULL; |
437 | } | |
438 | ||
08822d99 | 439 | if (tuser != NULL && !okname(tuser)) { |
440 | xfree(arg); | |
441 | return; | |
442 | } | |
443 | ||
3c0ef626 | 444 | for (i = 0; i < argc - 1; i++) { |
445 | src = colon(argv[i]); | |
446 | if (src) { /* remote to remote */ | |
08822d99 | 447 | freeargs(&alist); |
448 | addargs(&alist, "%s", ssh_program); | |
449 | if (verbose_mode) | |
450 | addargs(&alist, "-v"); | |
451 | addargs(&alist, "-x"); | |
452 | addargs(&alist, "-oClearAllForwardings yes"); | |
453 | addargs(&alist, "-n"); | |
454 | ||
3c0ef626 | 455 | *src++ = 0; |
456 | if (*src == 0) | |
457 | src = "."; | |
473db5ab | 458 | host = strrchr(argv[i], '@'); |
08822d99 | 459 | |
3c0ef626 | 460 | if (host) { |
461 | *host++ = 0; | |
462 | host = cleanhostname(host); | |
463 | suser = argv[i]; | |
464 | if (*suser == '\0') | |
465 | suser = pwd->pw_name; | |
08822d99 | 466 | else if (!okname(suser)) |
3c0ef626 | 467 | continue; |
08822d99 | 468 | addargs(&alist, "-l"); |
469 | addargs(&alist, "%s", suser); | |
3c0ef626 | 470 | } else { |
471 | host = cleanhostname(argv[i]); | |
3c0ef626 | 472 | } |
08822d99 | 473 | addargs(&alist, "%s", host); |
474 | addargs(&alist, "%s", cmd); | |
475 | addargs(&alist, "%s", src); | |
476 | addargs(&alist, "%s%s%s:%s", | |
477 | tuser ? tuser : "", tuser ? "@" : "", | |
478 | thost, targ); | |
479 | if (do_local_cmd(&alist) != 0) | |
473db5ab | 480 | errs = 1; |
3c0ef626 | 481 | } else { /* local to remote */ |
482 | if (remin == -1) { | |
483 | len = strlen(targ) + CMDNEEDS + 20; | |
484 | bp = xmalloc(len); | |
485 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
486 | host = cleanhostname(thost); | |
487 | if (do_cmd(host, tuser, bp, &remin, | |
488 | &remout, argc) < 0) | |
489 | exit(1); | |
490 | if (response() < 0) | |
491 | exit(1); | |
492 | (void) xfree(bp); | |
493 | } | |
494 | source(1, argv + i); | |
495 | } | |
496 | } | |
497 | } | |
498 | ||
499 | void | |
473db5ab | 500 | tolocal(int argc, char **argv) |
3c0ef626 | 501 | { |
502 | int i, len; | |
503 | char *bp, *host, *src, *suser; | |
08822d99 | 504 | arglist alist; |
505 | ||
506 | memset(&alist, '\0', sizeof(alist)); | |
507 | alist.list = NULL; | |
3c0ef626 | 508 | |
509 | for (i = 0; i < argc - 1; i++) { | |
510 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
08822d99 | 511 | freeargs(&alist); |
512 | addargs(&alist, "%s", _PATH_CP); | |
513 | if (iamrecursive) | |
514 | addargs(&alist, "-r"); | |
515 | if (pflag) | |
516 | addargs(&alist, "-p"); | |
517 | addargs(&alist, "%s", argv[i]); | |
518 | addargs(&alist, "%s", argv[argc-1]); | |
519 | if (do_local_cmd(&alist)) | |
3c0ef626 | 520 | ++errs; |
3c0ef626 | 521 | continue; |
522 | } | |
523 | *src++ = 0; | |
524 | if (*src == 0) | |
525 | src = "."; | |
473db5ab | 526 | if ((host = strrchr(argv[i], '@')) == NULL) { |
3c0ef626 | 527 | host = argv[i]; |
528 | suser = NULL; | |
529 | } else { | |
530 | *host++ = 0; | |
531 | suser = argv[i]; | |
532 | if (*suser == '\0') | |
533 | suser = pwd->pw_name; | |
3c0ef626 | 534 | } |
535 | host = cleanhostname(host); | |
536 | len = strlen(src) + CMDNEEDS + 20; | |
537 | bp = xmalloc(len); | |
538 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
539 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
540 | (void) xfree(bp); | |
541 | ++errs; | |
542 | continue; | |
543 | } | |
544 | xfree(bp); | |
545 | sink(1, argv + argc - 1); | |
546 | (void) close(remin); | |
547 | remin = remout = -1; | |
548 | } | |
549 | } | |
550 | ||
551 | void | |
473db5ab | 552 | source(int argc, char **argv) |
3c0ef626 | 553 | { |
554 | struct stat stb; | |
555 | static BUF buffer; | |
556 | BUF *bp; | |
473db5ab | 557 | off_t i, amt, statbytes; |
558 | size_t result; | |
559 | int fd = -1, haderr, indx; | |
560 | char *last, *name, buf[16384]; | |
3c0ef626 | 561 | int len; |
562 | ||
563 | for (indx = 0; indx < argc; ++indx) { | |
564 | name = argv[indx]; | |
565 | statbytes = 0; | |
566 | len = strlen(name); | |
567 | while (len > 1 && name[len-1] == '/') | |
568 | name[--len] = '\0'; | |
569 | if (strchr(name, '\n') != NULL) { | |
570 | run_err("%s: skipping, filename contains a newline", | |
571 | name); | |
572 | goto next; | |
573 | } | |
574 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
575 | goto syserr; | |
576 | if (fstat(fd, &stb) < 0) { | |
577 | syserr: run_err("%s: %s", name, strerror(errno)); | |
578 | goto next; | |
579 | } | |
580 | switch (stb.st_mode & S_IFMT) { | |
581 | case S_IFREG: | |
582 | break; | |
583 | case S_IFDIR: | |
584 | if (iamrecursive) { | |
585 | rsource(name, &stb); | |
586 | goto next; | |
587 | } | |
588 | /* FALLTHROUGH */ | |
589 | default: | |
590 | run_err("%s: not a regular file", name); | |
591 | goto next; | |
592 | } | |
593 | if ((last = strrchr(name, '/')) == NULL) | |
594 | last = name; | |
595 | else | |
596 | ++last; | |
597 | curfile = last; | |
598 | if (pflag) { | |
599 | /* | |
600 | * Make it compatible with possible future | |
601 | * versions expecting microseconds. | |
602 | */ | |
603 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
604 | (u_long) stb.st_mtime, | |
605 | (u_long) stb.st_atime); | |
473db5ab | 606 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 607 | if (response() < 0) |
608 | goto next; | |
609 | } | |
610 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
3c0ef626 | 611 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", |
612 | (u_int) (stb.st_mode & FILEMODEMASK), | |
08822d99 | 613 | (long long)stb.st_size, last); |
3c0ef626 | 614 | if (verbose_mode) { |
615 | fprintf(stderr, "Sending file modes: %s", buf); | |
3c0ef626 | 616 | } |
473db5ab | 617 | (void) atomicio(vwrite, remout, buf, strlen(buf)); |
3c0ef626 | 618 | if (response() < 0) |
619 | goto next; | |
473db5ab | 620 | if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) { |
08822d99 | 621 | next: if (fd != -1) { |
622 | (void) close(fd); | |
623 | fd = -1; | |
624 | } | |
3c0ef626 | 625 | continue; |
626 | } | |
473db5ab | 627 | if (showprogress) |
628 | start_progress_meter(curfile, stb.st_size, &statbytes); | |
3c0ef626 | 629 | /* Keep writing after an error so that we stay sync'd up. */ |
630 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
631 | amt = bp->cnt; | |
632 | if (i + amt > stb.st_size) | |
633 | amt = stb.st_size - i; | |
634 | if (!haderr) { | |
635 | result = atomicio(read, fd, bp->buf, amt); | |
636 | if (result != amt) | |
473db5ab | 637 | haderr = errno; |
3c0ef626 | 638 | } |
639 | if (haderr) | |
473db5ab | 640 | (void) atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 641 | else { |
473db5ab | 642 | result = atomicio(vwrite, remout, bp->buf, amt); |
3c0ef626 | 643 | if (result != amt) |
473db5ab | 644 | haderr = errno; |
3c0ef626 | 645 | statbytes += result; |
646 | } | |
473db5ab | 647 | if (limit_rate) |
648 | bwlimit(amt); | |
3c0ef626 | 649 | } |
650 | if (showprogress) | |
473db5ab | 651 | stop_progress_meter(); |
3c0ef626 | 652 | |
08822d99 | 653 | if (fd != -1) { |
654 | if (close(fd) < 0 && !haderr) | |
655 | haderr = errno; | |
656 | fd = -1; | |
657 | } | |
3c0ef626 | 658 | if (!haderr) |
473db5ab | 659 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 660 | else |
661 | run_err("%s: %s", name, strerror(haderr)); | |
662 | (void) response(); | |
663 | } | |
664 | } | |
665 | ||
666 | void | |
473db5ab | 667 | rsource(char *name, struct stat *statp) |
3c0ef626 | 668 | { |
669 | DIR *dirp; | |
670 | struct dirent *dp; | |
671 | char *last, *vect[1], path[1100]; | |
672 | ||
673 | if (!(dirp = opendir(name))) { | |
674 | run_err("%s: %s", name, strerror(errno)); | |
675 | return; | |
676 | } | |
677 | last = strrchr(name, '/'); | |
678 | if (last == 0) | |
679 | last = name; | |
680 | else | |
681 | last++; | |
682 | if (pflag) { | |
683 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
684 | (u_long) statp->st_mtime, | |
685 | (u_long) statp->st_atime); | |
473db5ab | 686 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 687 | if (response() < 0) { |
688 | closedir(dirp); | |
689 | return; | |
690 | } | |
691 | } | |
692 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
693 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
694 | if (verbose_mode) | |
695 | fprintf(stderr, "Entering directory: %s", path); | |
473db5ab | 696 | (void) atomicio(vwrite, remout, path, strlen(path)); |
3c0ef626 | 697 | if (response() < 0) { |
698 | closedir(dirp); | |
699 | return; | |
700 | } | |
701 | while ((dp = readdir(dirp)) != NULL) { | |
702 | if (dp->d_ino == 0) | |
703 | continue; | |
704 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
705 | continue; | |
706 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
707 | run_err("%s/%s: name too long", name, dp->d_name); | |
708 | continue; | |
709 | } | |
710 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
711 | vect[0] = path; | |
712 | source(1, vect); | |
713 | } | |
714 | (void) closedir(dirp); | |
473db5ab | 715 | (void) atomicio(vwrite, remout, "E\n", 2); |
3c0ef626 | 716 | (void) response(); |
717 | } | |
718 | ||
719 | void | |
473db5ab | 720 | bwlimit(int amount) |
721 | { | |
722 | static struct timeval bwstart, bwend; | |
723 | static int lamt, thresh = 16384; | |
724 | u_int64_t waitlen; | |
725 | struct timespec ts, rm; | |
726 | ||
727 | if (!timerisset(&bwstart)) { | |
728 | gettimeofday(&bwstart, NULL); | |
729 | return; | |
730 | } | |
731 | ||
732 | lamt += amount; | |
733 | if (lamt < thresh) | |
734 | return; | |
735 | ||
736 | gettimeofday(&bwend, NULL); | |
737 | timersub(&bwend, &bwstart, &bwend); | |
738 | if (!timerisset(&bwend)) | |
739 | return; | |
740 | ||
741 | lamt *= 8; | |
742 | waitlen = (double)1000000L * lamt / limit_rate; | |
743 | ||
744 | bwstart.tv_sec = waitlen / 1000000L; | |
745 | bwstart.tv_usec = waitlen % 1000000L; | |
746 | ||
747 | if (timercmp(&bwstart, &bwend, >)) { | |
748 | timersub(&bwstart, &bwend, &bwend); | |
749 | ||
750 | /* Adjust the wait time */ | |
751 | if (bwend.tv_sec) { | |
752 | thresh /= 2; | |
753 | if (thresh < 2048) | |
754 | thresh = 2048; | |
755 | } else if (bwend.tv_usec < 100) { | |
756 | thresh *= 2; | |
757 | if (thresh > 32768) | |
758 | thresh = 32768; | |
759 | } | |
760 | ||
761 | TIMEVAL_TO_TIMESPEC(&bwend, &ts); | |
762 | while (nanosleep(&ts, &rm) == -1) { | |
763 | if (errno != EINTR) | |
764 | break; | |
765 | ts = rm; | |
766 | } | |
767 | } | |
768 | ||
769 | lamt = 0; | |
770 | gettimeofday(&bwstart, NULL); | |
771 | } | |
772 | ||
773 | void | |
774 | sink(int argc, char **argv) | |
3c0ef626 | 775 | { |
776 | static BUF buffer; | |
777 | struct stat stb; | |
778 | enum { | |
779 | YES, NO, DISPLAYED | |
780 | } wrerr; | |
781 | BUF *bp; | |
473db5ab | 782 | off_t i; |
783 | size_t j, count; | |
784 | int amt, exists, first, mask, mode, ofd, omode; | |
785 | off_t size, statbytes; | |
3c0ef626 | 786 | int setimes, targisdir, wrerrno = 0; |
473db5ab | 787 | char ch, *cp, *np, *targ, *why, *vect[1], buf[16384]; |
3c0ef626 | 788 | struct timeval tv[2]; |
789 | ||
790 | #define atime tv[0] | |
791 | #define mtime tv[1] | |
473db5ab | 792 | #define SCREWUP(str) { why = str; goto screwup; } |
3c0ef626 | 793 | |
794 | setimes = targisdir = 0; | |
795 | mask = umask(0); | |
796 | if (!pflag) | |
797 | (void) umask(mask); | |
798 | if (argc != 1) { | |
799 | run_err("ambiguous target"); | |
800 | exit(1); | |
801 | } | |
802 | targ = *argv; | |
803 | if (targetshouldbedirectory) | |
804 | verifydir(targ); | |
805 | ||
473db5ab | 806 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 807 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) |
808 | targisdir = 1; | |
809 | for (first = 1;; first = 0) { | |
810 | cp = buf; | |
473db5ab | 811 | if (atomicio(read, remin, cp, 1) != 1) |
3c0ef626 | 812 | return; |
813 | if (*cp++ == '\n') | |
814 | SCREWUP("unexpected <newline>"); | |
815 | do { | |
816 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
817 | SCREWUP("lost connection"); | |
818 | *cp++ = ch; | |
819 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
820 | *cp = 0; | |
473db5ab | 821 | if (verbose_mode) |
822 | fprintf(stderr, "Sink: %s", buf); | |
3c0ef626 | 823 | |
824 | if (buf[0] == '\01' || buf[0] == '\02') { | |
825 | if (iamremote == 0) | |
473db5ab | 826 | (void) atomicio(vwrite, STDERR_FILENO, |
3c0ef626 | 827 | buf + 1, strlen(buf + 1)); |
828 | if (buf[0] == '\02') | |
829 | exit(1); | |
830 | ++errs; | |
831 | continue; | |
832 | } | |
833 | if (buf[0] == 'E') { | |
473db5ab | 834 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 835 | return; |
836 | } | |
837 | if (ch == '\n') | |
838 | *--cp = 0; | |
839 | ||
840 | cp = buf; | |
841 | if (*cp == 'T') { | |
842 | setimes++; | |
843 | cp++; | |
844 | mtime.tv_sec = strtol(cp, &cp, 10); | |
845 | if (!cp || *cp++ != ' ') | |
846 | SCREWUP("mtime.sec not delimited"); | |
847 | mtime.tv_usec = strtol(cp, &cp, 10); | |
848 | if (!cp || *cp++ != ' ') | |
849 | SCREWUP("mtime.usec not delimited"); | |
850 | atime.tv_sec = strtol(cp, &cp, 10); | |
851 | if (!cp || *cp++ != ' ') | |
852 | SCREWUP("atime.sec not delimited"); | |
853 | atime.tv_usec = strtol(cp, &cp, 10); | |
854 | if (!cp || *cp++ != '\0') | |
855 | SCREWUP("atime.usec not delimited"); | |
473db5ab | 856 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 857 | continue; |
858 | } | |
859 | if (*cp != 'C' && *cp != 'D') { | |
860 | /* | |
861 | * Check for the case "rcp remote:foo\* local:bar". | |
862 | * In this case, the line "No match." can be returned | |
863 | * by the shell before the rcp command on the remote is | |
864 | * executed so the ^Aerror_message convention isn't | |
865 | * followed. | |
866 | */ | |
867 | if (first) { | |
868 | run_err("%s", cp); | |
869 | exit(1); | |
870 | } | |
871 | SCREWUP("expected control record"); | |
872 | } | |
873 | mode = 0; | |
874 | for (++cp; cp < buf + 5; cp++) { | |
875 | if (*cp < '0' || *cp > '7') | |
876 | SCREWUP("bad mode"); | |
877 | mode = (mode << 3) | (*cp - '0'); | |
878 | } | |
879 | if (*cp++ != ' ') | |
880 | SCREWUP("mode not delimited"); | |
881 | ||
882 | for (size = 0; isdigit(*cp);) | |
883 | size = size * 10 + (*cp++ - '0'); | |
884 | if (*cp++ != ' ') | |
885 | SCREWUP("size not delimited"); | |
473db5ab | 886 | if ((strchr(cp, '/') != NULL) || (strcmp(cp, "..") == 0)) { |
887 | run_err("error: unexpected filename: %s", cp); | |
888 | exit(1); | |
889 | } | |
3c0ef626 | 890 | if (targisdir) { |
891 | static char *namebuf; | |
473db5ab | 892 | static size_t cursize; |
3c0ef626 | 893 | size_t need; |
894 | ||
895 | need = strlen(targ) + strlen(cp) + 250; | |
896 | if (need > cursize) { | |
897 | if (namebuf) | |
898 | xfree(namebuf); | |
899 | namebuf = xmalloc(need); | |
900 | cursize = need; | |
901 | } | |
902 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
473db5ab | 903 | strcmp(targ, "/") ? "/" : "", cp); |
3c0ef626 | 904 | np = namebuf; |
905 | } else | |
906 | np = targ; | |
907 | curfile = cp; | |
908 | exists = stat(np, &stb) == 0; | |
909 | if (buf[0] == 'D') { | |
910 | int mod_flag = pflag; | |
473db5ab | 911 | if (!iamrecursive) |
912 | SCREWUP("received directory without -r"); | |
3c0ef626 | 913 | if (exists) { |
914 | if (!S_ISDIR(stb.st_mode)) { | |
915 | errno = ENOTDIR; | |
916 | goto bad; | |
917 | } | |
918 | if (pflag) | |
919 | (void) chmod(np, mode); | |
920 | } else { | |
921 | /* Handle copying from a read-only | |
922 | directory */ | |
923 | mod_flag = 1; | |
924 | if (mkdir(np, mode | S_IRWXU) < 0) | |
925 | goto bad; | |
926 | } | |
927 | vect[0] = xstrdup(np); | |
928 | sink(1, vect); | |
929 | if (setimes) { | |
930 | setimes = 0; | |
931 | if (utimes(vect[0], tv) < 0) | |
932 | run_err("%s: set times: %s", | |
933 | vect[0], strerror(errno)); | |
934 | } | |
935 | if (mod_flag) | |
936 | (void) chmod(vect[0], mode); | |
937 | if (vect[0]) | |
938 | xfree(vect[0]); | |
939 | continue; | |
940 | } | |
941 | omode = mode; | |
942 | mode |= S_IWRITE; | |
943 | if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) { | |
944 | bad: run_err("%s: %s", np, strerror(errno)); | |
945 | continue; | |
946 | } | |
473db5ab | 947 | (void) atomicio(vwrite, remout, "", 1); |
948 | if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) { | |
3c0ef626 | 949 | (void) close(ofd); |
950 | continue; | |
951 | } | |
952 | cp = bp->buf; | |
953 | wrerr = NO; | |
954 | ||
3c0ef626 | 955 | statbytes = 0; |
473db5ab | 956 | if (showprogress) |
957 | start_progress_meter(curfile, size, &statbytes); | |
958 | for (count = i = 0; i < size; i += sizeof(buf)) { | |
959 | amt = sizeof(buf); | |
3c0ef626 | 960 | if (i + amt > size) |
961 | amt = size - i; | |
962 | count += amt; | |
963 | do { | |
473db5ab | 964 | j = atomicio(read, remin, cp, amt); |
965 | if (j == 0) { | |
3c0ef626 | 966 | run_err("%s", j ? strerror(errno) : |
967 | "dropped connection"); | |
968 | exit(1); | |
969 | } | |
970 | amt -= j; | |
971 | cp += j; | |
972 | statbytes += j; | |
973 | } while (amt > 0); | |
473db5ab | 974 | |
975 | if (limit_rate) | |
976 | bwlimit(sizeof(buf)); | |
977 | ||
3c0ef626 | 978 | if (count == bp->cnt) { |
979 | /* Keep reading so we stay sync'd up. */ | |
980 | if (wrerr == NO) { | |
473db5ab | 981 | if (atomicio(vwrite, ofd, bp->buf, |
982 | count) != count) { | |
3c0ef626 | 983 | wrerr = YES; |
473db5ab | 984 | wrerrno = errno; |
3c0ef626 | 985 | } |
986 | } | |
987 | count = 0; | |
988 | cp = bp->buf; | |
989 | } | |
990 | } | |
991 | if (showprogress) | |
473db5ab | 992 | stop_progress_meter(); |
3c0ef626 | 993 | if (count != 0 && wrerr == NO && |
473db5ab | 994 | atomicio(vwrite, ofd, bp->buf, count) != count) { |
3c0ef626 | 995 | wrerr = YES; |
473db5ab | 996 | wrerrno = errno; |
3c0ef626 | 997 | } |
473db5ab | 998 | if (wrerr == NO && ftruncate(ofd, size) != 0) { |
3c0ef626 | 999 | run_err("%s: truncate: %s", np, strerror(errno)); |
1000 | wrerr = DISPLAYED; | |
1001 | } | |
1002 | if (pflag) { | |
1003 | if (exists || omode != mode) | |
1004 | #ifdef HAVE_FCHMOD | |
473db5ab | 1005 | if (fchmod(ofd, omode)) { |
3c0ef626 | 1006 | #else /* HAVE_FCHMOD */ |
473db5ab | 1007 | if (chmod(np, omode)) { |
3c0ef626 | 1008 | #endif /* HAVE_FCHMOD */ |
1009 | run_err("%s: set mode: %s", | |
1010 | np, strerror(errno)); | |
473db5ab | 1011 | wrerr = DISPLAYED; |
1012 | } | |
3c0ef626 | 1013 | } else { |
1014 | if (!exists && omode != mode) | |
1015 | #ifdef HAVE_FCHMOD | |
473db5ab | 1016 | if (fchmod(ofd, omode & ~mask)) { |
3c0ef626 | 1017 | #else /* HAVE_FCHMOD */ |
473db5ab | 1018 | if (chmod(np, omode & ~mask)) { |
3c0ef626 | 1019 | #endif /* HAVE_FCHMOD */ |
1020 | run_err("%s: set mode: %s", | |
1021 | np, strerror(errno)); | |
473db5ab | 1022 | wrerr = DISPLAYED; |
1023 | } | |
3c0ef626 | 1024 | } |
1025 | if (close(ofd) == -1) { | |
1026 | wrerr = YES; | |
1027 | wrerrno = errno; | |
1028 | } | |
1029 | (void) response(); | |
1030 | if (setimes && wrerr == NO) { | |
1031 | setimes = 0; | |
1032 | if (utimes(np, tv) < 0) { | |
1033 | run_err("%s: set times: %s", | |
1034 | np, strerror(errno)); | |
1035 | wrerr = DISPLAYED; | |
1036 | } | |
1037 | } | |
1038 | switch (wrerr) { | |
1039 | case YES: | |
1040 | run_err("%s: %s", np, strerror(wrerrno)); | |
1041 | break; | |
1042 | case NO: | |
473db5ab | 1043 | (void) atomicio(vwrite, remout, "", 1); |
3c0ef626 | 1044 | break; |
1045 | case DISPLAYED: | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | screwup: | |
1050 | run_err("protocol error: %s", why); | |
1051 | exit(1); | |
1052 | } | |
1053 | ||
1054 | int | |
473db5ab | 1055 | response(void) |
3c0ef626 | 1056 | { |
1057 | char ch, *cp, resp, rbuf[2048]; | |
1058 | ||
1059 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
1060 | lostconn(0); | |
1061 | ||
1062 | cp = rbuf; | |
1063 | switch (resp) { | |
1064 | case 0: /* ok */ | |
1065 | return (0); | |
1066 | default: | |
1067 | *cp++ = resp; | |
1068 | /* FALLTHROUGH */ | |
1069 | case 1: /* error, followed by error msg */ | |
1070 | case 2: /* fatal error, "" */ | |
1071 | do { | |
1072 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
1073 | lostconn(0); | |
1074 | *cp++ = ch; | |
1075 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
1076 | ||
1077 | if (!iamremote) | |
473db5ab | 1078 | (void) atomicio(vwrite, STDERR_FILENO, rbuf, cp - rbuf); |
3c0ef626 | 1079 | ++errs; |
1080 | if (resp == 1) | |
1081 | return (-1); | |
1082 | exit(1); | |
1083 | } | |
1084 | /* NOTREACHED */ | |
1085 | } | |
1086 | ||
1087 | void | |
473db5ab | 1088 | usage(void) |
3c0ef626 | 1089 | { |
1090 | (void) fprintf(stderr, | |
473db5ab | 1091 | "usage: scp [-1246BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]\n" |
a7213e65 | 1092 | " [-l limit] [-o ssh_option] [-P port] [-w buffer size] [-S program]\n" |
473db5ab | 1093 | " [[user@]host1:]file1 [...] [[user@]host2:]file2\n"); |
3c0ef626 | 1094 | exit(1); |
1095 | } | |
1096 | ||
1097 | void | |
1098 | run_err(const char *fmt,...) | |
1099 | { | |
1100 | static FILE *fp; | |
1101 | va_list ap; | |
1102 | ||
1103 | ++errs; | |
1104 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
1105 | return; | |
1106 | (void) fprintf(fp, "%c", 0x01); | |
1107 | (void) fprintf(fp, "scp: "); | |
1108 | va_start(ap, fmt); | |
1109 | (void) vfprintf(fp, fmt, ap); | |
1110 | va_end(ap); | |
1111 | (void) fprintf(fp, "\n"); | |
1112 | (void) fflush(fp); | |
1113 | ||
1114 | if (!iamremote) { | |
1115 | va_start(ap, fmt); | |
1116 | vfprintf(stderr, fmt, ap); | |
1117 | va_end(ap); | |
1118 | fprintf(stderr, "\n"); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | void | |
473db5ab | 1123 | verifydir(char *cp) |
3c0ef626 | 1124 | { |
1125 | struct stat stb; | |
1126 | ||
1127 | if (!stat(cp, &stb)) { | |
1128 | if (S_ISDIR(stb.st_mode)) | |
1129 | return; | |
1130 | errno = ENOTDIR; | |
1131 | } | |
1132 | run_err("%s: %s", cp, strerror(errno)); | |
473db5ab | 1133 | killchild(0); |
3c0ef626 | 1134 | } |
1135 | ||
1136 | int | |
473db5ab | 1137 | okname(char *cp0) |
3c0ef626 | 1138 | { |
1139 | int c; | |
1140 | char *cp; | |
1141 | ||
1142 | cp = cp0; | |
1143 | do { | |
1144 | c = (int)*cp; | |
1145 | if (c & 0200) | |
1146 | goto bad; | |
473db5ab | 1147 | if (!isalpha(c) && !isdigit(c)) { |
1148 | switch (c) { | |
1149 | case '\'': | |
1150 | case '"': | |
1151 | case '`': | |
1152 | case ' ': | |
1153 | case '#': | |
1154 | goto bad; | |
1155 | default: | |
1156 | break; | |
1157 | } | |
1158 | } | |
3c0ef626 | 1159 | } while (*++cp); |
1160 | return (1); | |
1161 | ||
1162 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1163 | return (0); | |
1164 | } | |
1165 | ||
1166 | BUF * | |
473db5ab | 1167 | allocbuf(BUF *bp, int fd, int blksize) |
3c0ef626 | 1168 | { |
1169 | size_t size; | |
1170 | #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
1171 | struct stat stb; | |
1172 | ||
1173 | if (fstat(fd, &stb) < 0) { | |
1174 | run_err("fstat: %s", strerror(errno)); | |
1175 | return (0); | |
1176 | } | |
473db5ab | 1177 | size = roundup(stb.st_blksize, blksize); |
1178 | if (size == 0) | |
3c0ef626 | 1179 | size = blksize; |
3c0ef626 | 1180 | #else /* HAVE_STRUCT_STAT_ST_BLKSIZE */ |
1181 | size = blksize; | |
1182 | #endif /* HAVE_STRUCT_STAT_ST_BLKSIZE */ | |
1183 | if (bp->cnt >= size) | |
1184 | return (bp); | |
1185 | if (bp->buf == NULL) | |
1186 | bp->buf = xmalloc(size); | |
1187 | else | |
1188 | bp->buf = xrealloc(bp->buf, size); | |
1189 | memset(bp->buf, 0, size); | |
1190 | bp->cnt = size; | |
1191 | return (bp); | |
1192 | } | |
1193 | ||
1194 | void | |
473db5ab | 1195 | lostconn(int signo) |
3c0ef626 | 1196 | { |
1197 | if (!iamremote) | |
1198 | write(STDERR_FILENO, "lost connection\n", 16); | |
1199 | if (signo) | |
1200 | _exit(1); | |
1201 | else | |
1202 | exit(1); | |
1203 | } |