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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. | |
55 | * 3. All advertising materials mentioning features or use of this software | |
56 | * must display the following acknowledgement: | |
57 | * This product includes software developed by the University of | |
58 | * California, Berkeley and its contributors. | |
59 | * 4. Neither the name of the University nor the names of its contributors | |
60 | * may be used to endorse or promote products derived from this software | |
61 | * without specific prior written permission. | |
62 | * | |
63 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
64 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
65 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
66 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
67 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
68 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
69 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
70 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
71 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
72 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
73 | * SUCH DAMAGE. | |
74 | * | |
75 | */ | |
76 | ||
77 | #include "includes.h" | |
78 | RCSID("$OpenBSD: scp.c,v 1.67 2001/04/16 02:31:43 mouring Exp $"); | |
79 | ||
80 | #include "xmalloc.h" | |
81 | #include "atomicio.h" | |
82 | #include "pathnames.h" | |
83 | #include "log.h" | |
84 | #include "misc.h" | |
85 | #include "scp-common.h" | |
86 | ||
87 | #ifdef HAVE___PROGNAME | |
88 | extern char *__progname; | |
89 | #else | |
90 | char *__progname; | |
91 | #endif | |
92 | ||
93 | /* For progressmeter() -- number of seconds before xfer considered "stalled" */ | |
94 | #define STALLTIME 5 | |
95 | ||
96 | /* Progress meter bar */ | |
97 | #define BAR \ | |
98 | "************************************************************"\ | |
99 | "************************************************************"\ | |
100 | "************************************************************"\ | |
101 | "************************************************************" | |
102 | #define MAX_BARLENGTH (sizeof(BAR) - 1) | |
103 | ||
104 | /* Visual statistics about files as they are transferred. */ | |
105 | void progressmeter(int); | |
106 | ||
107 | /* Returns width of the terminal (for progress meter calculations). */ | |
108 | int getttywidth(void); | |
109 | int do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc); | |
110 | ||
111 | /* setup arguments for the call to ssh */ | |
112 | void addargs(char *fmt, ...) __attribute__((format(printf, 1, 2))); | |
113 | ||
114 | /* Time a transfer started. */ | |
115 | static struct timeval start; | |
116 | ||
117 | /* Number of bytes of current file transferred so far. */ | |
118 | volatile u_long statbytes; | |
119 | ||
120 | /* Total size of current file. */ | |
121 | off_t totalbytes = 0; | |
122 | ||
123 | /* Name of current file being transferred. */ | |
124 | char *curfile; | |
125 | ||
126 | /* This is set to non-zero to enable verbose mode. */ | |
127 | int verbose_mode = 0; | |
128 | ||
129 | /* This is set to zero if the progressmeter is not desired. */ | |
130 | int showprogress = 1; | |
131 | ||
132 | /* This is the program to execute for the secured connection. ("ssh" or -S) */ | |
133 | char *ssh_program = _PATH_SSH_PROGRAM; | |
134 | ||
135 | /* This is the list of arguments that scp passes to ssh */ | |
136 | struct { | |
137 | char **list; | |
138 | int num; | |
139 | int nalloc; | |
140 | } args; | |
141 | ||
142 | /* | |
143 | * This function executes the given command as the specified user on the | |
144 | * given host. This returns < 0 if execution fails, and >= 0 otherwise. This | |
145 | * assigns the input and output file descriptors on success. | |
146 | */ | |
147 | ||
148 | int | |
149 | do_cmd(char *host, char *remuser, char *cmd, int *fdin, int *fdout, int argc) | |
150 | { | |
151 | int pin[2], pout[2], reserved[2]; | |
152 | ||
153 | if (verbose_mode) | |
154 | fprintf(stderr, "Executing: program %s host %s, user %s, command %s\n", | |
155 | ssh_program, host, remuser ? remuser : "(unspecified)", cmd); | |
156 | ||
157 | /* | |
158 | * Reserve two descriptors so that the real pipes won't get | |
159 | * descriptors 0 and 1 because that will screw up dup2 below. | |
160 | */ | |
161 | pipe(reserved); | |
162 | ||
163 | /* Create a socket pair for communicating with ssh. */ | |
164 | if (pipe(pin) < 0) | |
165 | fatal("pipe: %s", strerror(errno)); | |
166 | if (pipe(pout) < 0) | |
167 | fatal("pipe: %s", strerror(errno)); | |
168 | ||
169 | /* Free the reserved descriptors. */ | |
170 | close(reserved[0]); | |
171 | close(reserved[1]); | |
172 | ||
173 | /* For a child to execute the command on the remote host using ssh. */ | |
174 | if (fork() == 0) { | |
175 | /* Child. */ | |
176 | close(pin[1]); | |
177 | close(pout[0]); | |
178 | dup2(pin[0], 0); | |
179 | dup2(pout[1], 1); | |
180 | close(pin[0]); | |
181 | close(pout[1]); | |
182 | ||
183 | args.list[0] = ssh_program; | |
184 | if (remuser != NULL) | |
185 | addargs("-l%s", remuser); | |
186 | addargs("%s", host); | |
187 | addargs("%s", cmd); | |
188 | ||
189 | execvp(ssh_program, args.list); | |
190 | perror(ssh_program); | |
191 | exit(1); | |
192 | } | |
193 | /* Parent. Close the other side, and return the local side. */ | |
194 | close(pin[0]); | |
195 | *fdout = pin[1]; | |
196 | close(pout[1]); | |
197 | *fdin = pout[0]; | |
198 | return 0; | |
199 | } | |
200 | ||
201 | typedef struct { | |
202 | int cnt; | |
203 | char *buf; | |
204 | } BUF; | |
205 | ||
206 | BUF *allocbuf(BUF *, int, int); | |
207 | void lostconn(int); | |
208 | void nospace(void); | |
209 | int okname(char *); | |
210 | void run_err(const char *,...); | |
211 | void verifydir(char *); | |
212 | ||
213 | struct passwd *pwd; | |
214 | uid_t userid; | |
215 | int errs, remin, remout; | |
216 | int pflag, iamremote, iamrecursive, targetshouldbedirectory; | |
217 | ||
218 | #define CMDNEEDS 64 | |
219 | char cmd[CMDNEEDS]; /* must hold "rcp -r -p -d\0" */ | |
220 | ||
221 | int response(void); | |
222 | void rsource(char *, struct stat *); | |
223 | void sink(int, char *[]); | |
224 | void source(int, char *[]); | |
225 | void tolocal(int, char *[]); | |
226 | void toremote(char *, int, char *[]); | |
227 | void usage(void); | |
228 | ||
229 | int | |
230 | main(argc, argv) | |
231 | int argc; | |
232 | char *argv[]; | |
233 | { | |
234 | int ch, fflag, tflag; | |
235 | char *targ; | |
236 | extern char *optarg; | |
237 | extern int optind; | |
238 | ||
239 | __progname = get_progname(argv[0]); | |
240 | ||
241 | args.list = NULL; | |
242 | addargs("ssh"); /* overwritten with ssh_program */ | |
243 | addargs("-x"); | |
244 | addargs("-oFallBackToRsh no"); | |
245 | ||
246 | fflag = tflag = 0; | |
247 | while ((ch = getopt(argc, argv, "dfprtvBCc:i:P:q46S:o:")) != -1) | |
248 | switch (ch) { | |
249 | /* User-visible flags. */ | |
250 | case '4': | |
251 | case '6': | |
252 | case 'C': | |
253 | addargs("-%c", ch); | |
254 | break; | |
255 | case 'o': | |
256 | case 'c': | |
257 | case 'i': | |
258 | addargs("-%c%s", ch, optarg); | |
259 | break; | |
260 | case 'P': | |
261 | addargs("-p%s", optarg); | |
262 | break; | |
263 | case 'B': | |
264 | addargs("-oBatchmode yes"); | |
265 | break; | |
266 | case 'p': | |
267 | pflag = 1; | |
268 | break; | |
269 | case 'r': | |
270 | iamrecursive = 1; | |
271 | break; | |
272 | case 'S': | |
273 | ssh_program = xstrdup(optarg); | |
274 | break; | |
275 | case 'v': | |
276 | verbose_mode = 1; | |
277 | break; | |
278 | case 'q': | |
279 | showprogress = 0; | |
280 | break; | |
281 | ||
282 | /* Server options. */ | |
283 | case 'd': | |
284 | targetshouldbedirectory = 1; | |
285 | break; | |
286 | case 'f': /* "from" */ | |
287 | iamremote = 1; | |
288 | fflag = 1; | |
289 | break; | |
290 | case 't': /* "to" */ | |
291 | iamremote = 1; | |
292 | tflag = 1; | |
293 | #ifdef HAVE_CYGWIN | |
294 | setmode(0, O_BINARY); | |
295 | #endif | |
296 | break; | |
297 | default: | |
298 | usage(); | |
299 | } | |
300 | argc -= optind; | |
301 | argv += optind; | |
302 | ||
303 | if ((pwd = getpwuid(userid = getuid())) == NULL) | |
304 | fatal("unknown user %d", (int) userid); | |
305 | ||
306 | if (!isatty(STDERR_FILENO)) | |
307 | showprogress = 0; | |
308 | ||
309 | remin = STDIN_FILENO; | |
310 | remout = STDOUT_FILENO; | |
311 | ||
312 | if (fflag) { | |
313 | /* Follow "protocol", send data. */ | |
314 | (void) response(); | |
315 | source(argc, argv); | |
316 | exit(errs != 0); | |
317 | } | |
318 | if (tflag) { | |
319 | /* Receive data. */ | |
320 | sink(argc, argv); | |
321 | exit(errs != 0); | |
322 | } | |
323 | if (argc < 2) | |
324 | usage(); | |
325 | if (argc > 2) | |
326 | targetshouldbedirectory = 1; | |
327 | ||
328 | remin = remout = -1; | |
329 | /* Command to be executed on remote system using "ssh". */ | |
330 | (void) snprintf(cmd, sizeof cmd, "scp%s%s%s%s", | |
331 | verbose_mode ? " -v" : "", | |
332 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
333 | targetshouldbedirectory ? " -d" : ""); | |
334 | ||
335 | (void) signal(SIGPIPE, lostconn); | |
336 | ||
337 | if ((targ = colon(argv[argc - 1]))) /* Dest is remote host. */ | |
338 | toremote(targ, argc, argv); | |
339 | else { | |
340 | tolocal(argc, argv); /* Dest is local host. */ | |
341 | if (targetshouldbedirectory) | |
342 | verifydir(argv[argc - 1]); | |
343 | } | |
344 | exit(errs != 0); | |
345 | } | |
346 | ||
347 | void | |
348 | toremote(targ, argc, argv) | |
349 | char *targ, *argv[]; | |
350 | int argc; | |
351 | { | |
352 | int i, len; | |
353 | char *bp, *host, *src, *suser, *thost, *tuser; | |
354 | ||
355 | *targ++ = 0; | |
356 | if (*targ == 0) | |
357 | targ = "."; | |
358 | ||
359 | if ((thost = strchr(argv[argc - 1], '@'))) { | |
360 | /* user@host */ | |
361 | *thost++ = 0; | |
362 | tuser = argv[argc - 1]; | |
363 | if (*tuser == '\0') | |
364 | tuser = NULL; | |
365 | else if (!okname(tuser)) | |
366 | exit(1); | |
367 | } else { | |
368 | thost = argv[argc - 1]; | |
369 | tuser = NULL; | |
370 | } | |
371 | ||
372 | for (i = 0; i < argc - 1; i++) { | |
373 | src = colon(argv[i]); | |
374 | if (src) { /* remote to remote */ | |
375 | *src++ = 0; | |
376 | if (*src == 0) | |
377 | src = "."; | |
378 | host = strchr(argv[i], '@'); | |
379 | len = strlen(ssh_program) + strlen(argv[i]) + | |
380 | strlen(src) + (tuser ? strlen(tuser) : 0) + | |
381 | strlen(thost) + strlen(targ) + CMDNEEDS + 32; | |
382 | bp = xmalloc(len); | |
383 | if (host) { | |
384 | *host++ = 0; | |
385 | host = cleanhostname(host); | |
386 | suser = argv[i]; | |
387 | if (*suser == '\0') | |
388 | suser = pwd->pw_name; | |
389 | else if (!okname(suser)) | |
390 | continue; | |
391 | snprintf(bp, len, | |
392 | "%s%s -x -o'FallBackToRsh no' -n " | |
393 | "-l %s %s %s %s '%s%s%s:%s'", | |
394 | ssh_program, verbose_mode ? " -v" : "", | |
395 | suser, host, cmd, src, | |
396 | tuser ? tuser : "", tuser ? "@" : "", | |
397 | thost, targ); | |
398 | } else { | |
399 | host = cleanhostname(argv[i]); | |
400 | snprintf(bp, len, | |
401 | "exec %s%s -x -o'FallBackToRsh no' -n %s " | |
402 | "%s %s '%s%s%s:%s'", | |
403 | ssh_program, verbose_mode ? " -v" : "", | |
404 | host, cmd, src, | |
405 | tuser ? tuser : "", tuser ? "@" : "", | |
406 | thost, targ); | |
407 | } | |
408 | if (verbose_mode) | |
409 | fprintf(stderr, "Executing: %s\n", bp); | |
410 | (void) system(bp); | |
411 | (void) xfree(bp); | |
412 | } else { /* local to remote */ | |
413 | if (remin == -1) { | |
414 | len = strlen(targ) + CMDNEEDS + 20; | |
415 | bp = xmalloc(len); | |
416 | (void) snprintf(bp, len, "%s -t %s", cmd, targ); | |
417 | host = cleanhostname(thost); | |
418 | if (do_cmd(host, tuser, bp, &remin, | |
419 | &remout, argc) < 0) | |
420 | exit(1); | |
421 | if (response() < 0) | |
422 | exit(1); | |
423 | (void) xfree(bp); | |
424 | } | |
425 | source(1, argv + i); | |
426 | } | |
427 | } | |
428 | } | |
429 | ||
430 | void | |
431 | tolocal(argc, argv) | |
432 | int argc; | |
433 | char *argv[]; | |
434 | { | |
435 | int i, len; | |
436 | char *bp, *host, *src, *suser; | |
437 | ||
438 | for (i = 0; i < argc - 1; i++) { | |
439 | if (!(src = colon(argv[i]))) { /* Local to local. */ | |
440 | len = strlen(_PATH_CP) + strlen(argv[i]) + | |
441 | strlen(argv[argc - 1]) + 20; | |
442 | bp = xmalloc(len); | |
443 | (void) snprintf(bp, len, "exec %s%s%s %s %s", _PATH_CP, | |
444 | iamrecursive ? " -r" : "", pflag ? " -p" : "", | |
445 | argv[i], argv[argc - 1]); | |
446 | if (verbose_mode) | |
447 | fprintf(stderr, "Executing: %s\n", bp); | |
448 | if (system(bp)) | |
449 | ++errs; | |
450 | (void) xfree(bp); | |
451 | continue; | |
452 | } | |
453 | *src++ = 0; | |
454 | if (*src == 0) | |
455 | src = "."; | |
456 | if ((host = strchr(argv[i], '@')) == NULL) { | |
457 | host = argv[i]; | |
458 | suser = NULL; | |
459 | } else { | |
460 | *host++ = 0; | |
461 | suser = argv[i]; | |
462 | if (*suser == '\0') | |
463 | suser = pwd->pw_name; | |
464 | else if (!okname(suser)) | |
465 | continue; | |
466 | } | |
467 | host = cleanhostname(host); | |
468 | len = strlen(src) + CMDNEEDS + 20; | |
469 | bp = xmalloc(len); | |
470 | (void) snprintf(bp, len, "%s -f %s", cmd, src); | |
471 | if (do_cmd(host, suser, bp, &remin, &remout, argc) < 0) { | |
472 | (void) xfree(bp); | |
473 | ++errs; | |
474 | continue; | |
475 | } | |
476 | xfree(bp); | |
477 | sink(1, argv + argc - 1); | |
478 | (void) close(remin); | |
479 | remin = remout = -1; | |
480 | } | |
481 | } | |
482 | ||
483 | void | |
484 | source(argc, argv) | |
485 | int argc; | |
486 | char *argv[]; | |
487 | { | |
488 | struct stat stb; | |
489 | static BUF buffer; | |
490 | BUF *bp; | |
491 | off_t i; | |
492 | int amt, fd, haderr, indx, result; | |
493 | char *last, *name, buf[2048]; | |
494 | int len; | |
495 | ||
496 | for (indx = 0; indx < argc; ++indx) { | |
497 | name = argv[indx]; | |
498 | statbytes = 0; | |
499 | len = strlen(name); | |
500 | while (len > 1 && name[len-1] == '/') | |
501 | name[--len] = '\0'; | |
502 | if ((fd = open(name, O_RDONLY, 0)) < 0) | |
503 | goto syserr; | |
504 | if (fstat(fd, &stb) < 0) { | |
505 | syserr: run_err("%s: %s", name, strerror(errno)); | |
506 | goto next; | |
507 | } | |
508 | switch (stb.st_mode & S_IFMT) { | |
509 | case S_IFREG: | |
510 | break; | |
511 | case S_IFDIR: | |
512 | if (iamrecursive) { | |
513 | rsource(name, &stb); | |
514 | goto next; | |
515 | } | |
516 | /* FALLTHROUGH */ | |
517 | default: | |
518 | run_err("%s: not a regular file", name); | |
519 | goto next; | |
520 | } | |
521 | if ((last = strrchr(name, '/')) == NULL) | |
522 | last = name; | |
523 | else | |
524 | ++last; | |
525 | curfile = last; | |
526 | if (pflag) { | |
527 | /* | |
528 | * Make it compatible with possible future | |
529 | * versions expecting microseconds. | |
530 | */ | |
531 | (void) snprintf(buf, sizeof buf, "T%lu 0 %lu 0\n", | |
532 | (u_long) stb.st_mtime, | |
533 | (u_long) stb.st_atime); | |
534 | (void) atomicio(write, remout, buf, strlen(buf)); | |
535 | if (response() < 0) | |
536 | goto next; | |
537 | } | |
538 | #define FILEMODEMASK (S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO) | |
539 | #ifdef HAVE_LONG_LONG_INT | |
540 | snprintf(buf, sizeof buf, "C%04o %lld %s\n", | |
541 | (u_int) (stb.st_mode & FILEMODEMASK), | |
542 | (long long) stb.st_size, last); | |
543 | #else | |
544 | /* XXX: Handle integer overflow? */ | |
545 | snprintf(buf, sizeof buf, "C%04o %lu %s\n", | |
546 | (u_int) (stb.st_mode & FILEMODEMASK), | |
547 | (u_long) stb.st_size, last); | |
548 | #endif | |
549 | ||
550 | if (verbose_mode) { | |
551 | fprintf(stderr, "Sending file modes: %s", buf); | |
552 | fflush(stderr); | |
553 | } | |
554 | (void) atomicio(write, remout, buf, strlen(buf)); | |
555 | if (response() < 0) | |
556 | goto next; | |
557 | if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) { | |
558 | next: (void) close(fd); | |
559 | continue; | |
560 | } | |
561 | if (showprogress) { | |
562 | totalbytes = stb.st_size; | |
563 | progressmeter(-1); | |
564 | } | |
565 | /* Keep writing after an error so that we stay sync'd up. */ | |
566 | for (haderr = i = 0; i < stb.st_size; i += bp->cnt) { | |
567 | amt = bp->cnt; | |
568 | if (i + amt > stb.st_size) | |
569 | amt = stb.st_size - i; | |
570 | if (!haderr) { | |
571 | result = atomicio(read, fd, bp->buf, amt); | |
572 | if (result != amt) | |
573 | haderr = result >= 0 ? EIO : errno; | |
574 | } | |
575 | if (haderr) | |
576 | (void) atomicio(write, remout, bp->buf, amt); | |
577 | else { | |
578 | result = atomicio(write, remout, bp->buf, amt); | |
579 | if (result != amt) | |
580 | haderr = result >= 0 ? EIO : errno; | |
581 | statbytes += result; | |
582 | } | |
583 | } | |
584 | if (showprogress) | |
585 | progressmeter(1); | |
586 | ||
587 | if (close(fd) < 0 && !haderr) | |
588 | haderr = errno; | |
589 | if (!haderr) | |
590 | (void) atomicio(write, remout, "", 1); | |
591 | else | |
592 | run_err("%s: %s", name, strerror(haderr)); | |
593 | (void) response(); | |
594 | } | |
595 | } | |
596 | ||
597 | void | |
598 | rsource(name, statp) | |
599 | char *name; | |
600 | struct stat *statp; | |
601 | { | |
602 | DIR *dirp; | |
603 | struct dirent *dp; | |
604 | char *last, *vect[1], path[1100]; | |
605 | ||
606 | if (!(dirp = opendir(name))) { | |
607 | run_err("%s: %s", name, strerror(errno)); | |
608 | return; | |
609 | } | |
610 | last = strrchr(name, '/'); | |
611 | if (last == 0) | |
612 | last = name; | |
613 | else | |
614 | last++; | |
615 | if (pflag) { | |
616 | (void) snprintf(path, sizeof(path), "T%lu 0 %lu 0\n", | |
617 | (u_long) statp->st_mtime, | |
618 | (u_long) statp->st_atime); | |
619 | (void) atomicio(write, remout, path, strlen(path)); | |
620 | if (response() < 0) { | |
621 | closedir(dirp); | |
622 | return; | |
623 | } | |
624 | } | |
625 | (void) snprintf(path, sizeof path, "D%04o %d %.1024s\n", | |
626 | (u_int) (statp->st_mode & FILEMODEMASK), 0, last); | |
627 | if (verbose_mode) | |
628 | fprintf(stderr, "Entering directory: %s", path); | |
629 | (void) atomicio(write, remout, path, strlen(path)); | |
630 | if (response() < 0) { | |
631 | closedir(dirp); | |
632 | return; | |
633 | } | |
634 | while ((dp = readdir(dirp)) != NULL) { | |
635 | if (dp->d_ino == 0) | |
636 | continue; | |
637 | if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) | |
638 | continue; | |
639 | if (strlen(name) + 1 + strlen(dp->d_name) >= sizeof(path) - 1) { | |
640 | run_err("%s/%s: name too long", name, dp->d_name); | |
641 | continue; | |
642 | } | |
643 | (void) snprintf(path, sizeof path, "%s/%s", name, dp->d_name); | |
644 | vect[0] = path; | |
645 | source(1, vect); | |
646 | } | |
647 | (void) closedir(dirp); | |
648 | (void) atomicio(write, remout, "E\n", 2); | |
649 | (void) response(); | |
650 | } | |
651 | ||
652 | void | |
653 | sink(argc, argv) | |
654 | int argc; | |
655 | char *argv[]; | |
656 | { | |
657 | static BUF buffer; | |
658 | struct stat stb; | |
659 | enum { | |
660 | YES, NO, DISPLAYED | |
661 | } wrerr; | |
662 | BUF *bp; | |
663 | off_t i, j; | |
664 | int amt, count, exists, first, mask, mode, ofd, omode; | |
665 | off_t size; | |
666 | int setimes, targisdir, wrerrno = 0; | |
667 | char ch, *cp, *np, *targ, *why, *vect[1], buf[2048]; | |
668 | struct timeval tv[2]; | |
669 | ||
670 | #define atime tv[0] | |
671 | #define mtime tv[1] | |
672 | #define SCREWUP(str) { why = str; goto screwup; } | |
673 | ||
674 | setimes = targisdir = 0; | |
675 | mask = umask(0); | |
676 | if (!pflag) | |
677 | (void) umask(mask); | |
678 | if (argc != 1) { | |
679 | run_err("ambiguous target"); | |
680 | exit(1); | |
681 | } | |
682 | targ = *argv; | |
683 | if (targetshouldbedirectory) | |
684 | verifydir(targ); | |
685 | ||
686 | (void) atomicio(write, remout, "", 1); | |
687 | if (stat(targ, &stb) == 0 && S_ISDIR(stb.st_mode)) | |
688 | targisdir = 1; | |
689 | for (first = 1;; first = 0) { | |
690 | cp = buf; | |
691 | if (atomicio(read, remin, cp, 1) <= 0) | |
692 | return; | |
693 | if (*cp++ == '\n') | |
694 | SCREWUP("unexpected <newline>"); | |
695 | do { | |
696 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
697 | SCREWUP("lost connection"); | |
698 | *cp++ = ch; | |
699 | } while (cp < &buf[sizeof(buf) - 1] && ch != '\n'); | |
700 | *cp = 0; | |
701 | ||
702 | if (buf[0] == '\01' || buf[0] == '\02') { | |
703 | if (iamremote == 0) | |
704 | (void) atomicio(write, STDERR_FILENO, | |
705 | buf + 1, strlen(buf + 1)); | |
706 | if (buf[0] == '\02') | |
707 | exit(1); | |
708 | ++errs; | |
709 | continue; | |
710 | } | |
711 | if (buf[0] == 'E') { | |
712 | (void) atomicio(write, remout, "", 1); | |
713 | return; | |
714 | } | |
715 | if (ch == '\n') | |
716 | *--cp = 0; | |
717 | ||
718 | cp = buf; | |
719 | if (*cp == 'T') { | |
720 | setimes++; | |
721 | cp++; | |
722 | mtime.tv_sec = strtol(cp, &cp, 10); | |
723 | if (!cp || *cp++ != ' ') | |
724 | SCREWUP("mtime.sec not delimited"); | |
725 | mtime.tv_usec = strtol(cp, &cp, 10); | |
726 | if (!cp || *cp++ != ' ') | |
727 | SCREWUP("mtime.usec not delimited"); | |
728 | atime.tv_sec = strtol(cp, &cp, 10); | |
729 | if (!cp || *cp++ != ' ') | |
730 | SCREWUP("atime.sec not delimited"); | |
731 | atime.tv_usec = strtol(cp, &cp, 10); | |
732 | if (!cp || *cp++ != '\0') | |
733 | SCREWUP("atime.usec not delimited"); | |
734 | (void) atomicio(write, remout, "", 1); | |
735 | continue; | |
736 | } | |
737 | if (*cp != 'C' && *cp != 'D') { | |
738 | /* | |
739 | * Check for the case "rcp remote:foo\* local:bar". | |
740 | * In this case, the line "No match." can be returned | |
741 | * by the shell before the rcp command on the remote is | |
742 | * executed so the ^Aerror_message convention isn't | |
743 | * followed. | |
744 | */ | |
745 | if (first) { | |
746 | run_err("%s", cp); | |
747 | exit(1); | |
748 | } | |
749 | SCREWUP("expected control record"); | |
750 | } | |
751 | mode = 0; | |
752 | for (++cp; cp < buf + 5; cp++) { | |
753 | if (*cp < '0' || *cp > '7') | |
754 | SCREWUP("bad mode"); | |
755 | mode = (mode << 3) | (*cp - '0'); | |
756 | } | |
757 | if (*cp++ != ' ') | |
758 | SCREWUP("mode not delimited"); | |
759 | ||
760 | for (size = 0; isdigit(*cp);) | |
761 | size = size * 10 + (*cp++ - '0'); | |
762 | if (*cp++ != ' ') | |
763 | SCREWUP("size not delimited"); | |
764 | if (targisdir) { | |
765 | static char *namebuf; | |
766 | static int cursize; | |
767 | size_t need; | |
768 | ||
769 | need = strlen(targ) + strlen(cp) + 250; | |
770 | if (need > cursize) { | |
771 | if (namebuf) | |
772 | xfree(namebuf); | |
773 | namebuf = xmalloc(need); | |
774 | cursize = need; | |
775 | } | |
776 | (void) snprintf(namebuf, need, "%s%s%s", targ, | |
777 | *targ ? "/" : "", cp); | |
778 | np = namebuf; | |
779 | } else | |
780 | np = targ; | |
781 | curfile = cp; | |
782 | exists = stat(np, &stb) == 0; | |
783 | if (buf[0] == 'D') { | |
784 | int mod_flag = pflag; | |
785 | if (exists) { | |
786 | if (!S_ISDIR(stb.st_mode)) { | |
787 | errno = ENOTDIR; | |
788 | goto bad; | |
789 | } | |
790 | if (pflag) | |
791 | (void) chmod(np, mode); | |
792 | } else { | |
793 | /* Handle copying from a read-only | |
794 | directory */ | |
795 | mod_flag = 1; | |
796 | if (mkdir(np, mode | S_IRWXU) < 0) | |
797 | goto bad; | |
798 | } | |
799 | vect[0] = xstrdup(np); | |
800 | sink(1, vect); | |
801 | if (setimes) { | |
802 | setimes = 0; | |
803 | if (utimes(vect[0], tv) < 0) | |
804 | run_err("%s: set times: %s", | |
805 | vect[0], strerror(errno)); | |
806 | } | |
807 | if (mod_flag) | |
808 | (void) chmod(vect[0], mode); | |
809 | if (vect[0]) | |
810 | xfree(vect[0]); | |
811 | continue; | |
812 | } | |
813 | omode = mode; | |
814 | mode |= S_IWRITE; | |
815 | if ((ofd = open(np, O_WRONLY | O_CREAT | O_TRUNC, mode)) < 0) { | |
816 | bad: run_err("%s: %s", np, strerror(errno)); | |
817 | continue; | |
818 | } | |
819 | (void) atomicio(write, remout, "", 1); | |
820 | if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) { | |
821 | (void) close(ofd); | |
822 | continue; | |
823 | } | |
824 | cp = bp->buf; | |
825 | wrerr = NO; | |
826 | ||
827 | if (showprogress) { | |
828 | totalbytes = size; | |
829 | progressmeter(-1); | |
830 | } | |
831 | statbytes = 0; | |
832 | for (count = i = 0; i < size; i += 4096) { | |
833 | amt = 4096; | |
834 | if (i + amt > size) | |
835 | amt = size - i; | |
836 | count += amt; | |
837 | do { | |
838 | j = read(remin, cp, amt); | |
839 | if (j == -1 && (errno == EINTR || errno == EAGAIN)) { | |
840 | continue; | |
841 | } else if (j <= 0) { | |
842 | run_err("%s", j ? strerror(errno) : | |
843 | "dropped connection"); | |
844 | exit(1); | |
845 | } | |
846 | amt -= j; | |
847 | cp += j; | |
848 | statbytes += j; | |
849 | } while (amt > 0); | |
850 | if (count == bp->cnt) { | |
851 | /* Keep reading so we stay sync'd up. */ | |
852 | if (wrerr == NO) { | |
853 | j = atomicio(write, ofd, bp->buf, count); | |
854 | if (j != count) { | |
855 | wrerr = YES; | |
856 | wrerrno = j >= 0 ? EIO : errno; | |
857 | } | |
858 | } | |
859 | count = 0; | |
860 | cp = bp->buf; | |
861 | } | |
862 | } | |
863 | if (showprogress) | |
864 | progressmeter(1); | |
865 | if (count != 0 && wrerr == NO && | |
866 | (j = atomicio(write, ofd, bp->buf, count)) != count) { | |
867 | wrerr = YES; | |
868 | wrerrno = j >= 0 ? EIO : errno; | |
869 | } | |
870 | #if 0 | |
871 | if (ftruncate(ofd, size)) { | |
872 | run_err("%s: truncate: %s", np, strerror(errno)); | |
873 | wrerr = DISPLAYED; | |
874 | } | |
875 | #endif | |
876 | if (pflag) { | |
877 | if (exists || omode != mode) | |
878 | #ifdef HAVE_FCHMOD | |
879 | if (fchmod(ofd, omode)) | |
880 | #else /* HAVE_FCHMOD */ | |
881 | if (chmod(np, omode)) | |
882 | #endif /* HAVE_FCHMOD */ | |
883 | run_err("%s: set mode: %s", | |
884 | np, strerror(errno)); | |
885 | } else { | |
886 | if (!exists && omode != mode) | |
887 | #ifdef HAVE_FCHMOD | |
888 | if (fchmod(ofd, omode & ~mask)) | |
889 | #else /* HAVE_FCHMOD */ | |
890 | if (chmod(np, omode & ~mask)) | |
891 | #endif /* HAVE_FCHMOD */ | |
892 | run_err("%s: set mode: %s", | |
893 | np, strerror(errno)); | |
894 | } | |
895 | if (close(ofd) == -1) { | |
896 | wrerr = YES; | |
897 | wrerrno = errno; | |
898 | } | |
899 | (void) response(); | |
900 | if (setimes && wrerr == NO) { | |
901 | setimes = 0; | |
902 | if (utimes(np, tv) < 0) { | |
903 | run_err("%s: set times: %s", | |
904 | np, strerror(errno)); | |
905 | wrerr = DISPLAYED; | |
906 | } | |
907 | } | |
908 | switch (wrerr) { | |
909 | case YES: | |
910 | run_err("%s: %s", np, strerror(wrerrno)); | |
911 | break; | |
912 | case NO: | |
913 | (void) atomicio(write, remout, "", 1); | |
914 | break; | |
915 | case DISPLAYED: | |
916 | break; | |
917 | } | |
918 | } | |
919 | screwup: | |
920 | run_err("protocol error: %s", why); | |
921 | exit(1); | |
922 | } | |
923 | ||
924 | int | |
925 | response() | |
926 | { | |
927 | char ch, *cp, resp, rbuf[2048]; | |
928 | ||
929 | if (atomicio(read, remin, &resp, sizeof(resp)) != sizeof(resp)) | |
930 | lostconn(0); | |
931 | ||
932 | cp = rbuf; | |
933 | switch (resp) { | |
934 | case 0: /* ok */ | |
935 | return (0); | |
936 | default: | |
937 | *cp++ = resp; | |
938 | /* FALLTHROUGH */ | |
939 | case 1: /* error, followed by error msg */ | |
940 | case 2: /* fatal error, "" */ | |
941 | do { | |
942 | if (atomicio(read, remin, &ch, sizeof(ch)) != sizeof(ch)) | |
943 | lostconn(0); | |
944 | *cp++ = ch; | |
945 | } while (cp < &rbuf[sizeof(rbuf) - 1] && ch != '\n'); | |
946 | ||
947 | if (!iamremote) | |
948 | (void) atomicio(write, STDERR_FILENO, rbuf, cp - rbuf); | |
949 | ++errs; | |
950 | if (resp == 1) | |
951 | return (-1); | |
952 | exit(1); | |
953 | } | |
954 | /* NOTREACHED */ | |
955 | } | |
956 | ||
957 | void | |
958 | usage() | |
959 | { | |
960 | (void) fprintf(stderr, "usage: scp " | |
961 | "[-pqrvBC46] [-S ssh] [-P port] [-c cipher] [-i identity] f1 f2\n" | |
962 | " or: scp [options] f1 ... fn directory\n"); | |
963 | exit(1); | |
964 | } | |
965 | ||
966 | void | |
967 | run_err(const char *fmt,...) | |
968 | { | |
969 | static FILE *fp; | |
970 | va_list ap; | |
971 | ||
972 | ++errs; | |
973 | if (fp == NULL && !(fp = fdopen(remout, "w"))) | |
974 | return; | |
975 | (void) fprintf(fp, "%c", 0x01); | |
976 | (void) fprintf(fp, "scp: "); | |
977 | va_start(ap, fmt); | |
978 | (void) vfprintf(fp, fmt, ap); | |
979 | va_end(ap); | |
980 | (void) fprintf(fp, "\n"); | |
981 | (void) fflush(fp); | |
982 | ||
983 | if (!iamremote) { | |
984 | va_start(ap, fmt); | |
985 | vfprintf(stderr, fmt, ap); | |
986 | va_end(ap); | |
987 | fprintf(stderr, "\n"); | |
988 | } | |
989 | } | |
990 | ||
991 | void | |
992 | verifydir(cp) | |
993 | char *cp; | |
994 | { | |
995 | struct stat stb; | |
996 | ||
997 | if (!stat(cp, &stb)) { | |
998 | if (S_ISDIR(stb.st_mode)) | |
999 | return; | |
1000 | errno = ENOTDIR; | |
1001 | } | |
1002 | run_err("%s: %s", cp, strerror(errno)); | |
1003 | exit(1); | |
1004 | } | |
1005 | ||
1006 | int | |
1007 | okname(cp0) | |
1008 | char *cp0; | |
1009 | { | |
1010 | int c; | |
1011 | char *cp; | |
1012 | ||
1013 | cp = cp0; | |
1014 | do { | |
1015 | c = *cp; | |
1016 | if (c & 0200) | |
1017 | goto bad; | |
1018 | if (!isalpha(c) && !isdigit(c) && | |
1019 | c != '_' && c != '-' && c != '.' && c != '+') | |
1020 | goto bad; | |
1021 | } while (*++cp); | |
1022 | return (1); | |
1023 | ||
1024 | bad: fprintf(stderr, "%s: invalid user name\n", cp0); | |
1025 | return (0); | |
1026 | } | |
1027 | ||
1028 | BUF * | |
1029 | allocbuf(bp, fd, blksize) | |
1030 | BUF *bp; | |
1031 | int fd, blksize; | |
1032 | { | |
1033 | size_t size; | |
1034 | #ifdef HAVE_ST_BLKSIZE | |
1035 | struct stat stb; | |
1036 | ||
1037 | if (fstat(fd, &stb) < 0) { | |
1038 | run_err("fstat: %s", strerror(errno)); | |
1039 | return (0); | |
1040 | } | |
1041 | if (stb.st_blksize == 0) | |
1042 | size = blksize; | |
1043 | else | |
1044 | size = blksize + (stb.st_blksize - blksize % stb.st_blksize) % | |
1045 | stb.st_blksize; | |
1046 | #else /* HAVE_ST_BLKSIZE */ | |
1047 | size = blksize; | |
1048 | #endif /* HAVE_ST_BLKSIZE */ | |
1049 | if (bp->cnt >= size) | |
1050 | return (bp); | |
1051 | if (bp->buf == NULL) | |
1052 | bp->buf = xmalloc(size); | |
1053 | else | |
1054 | bp->buf = xrealloc(bp->buf, size); | |
1055 | bp->cnt = size; | |
1056 | return (bp); | |
1057 | } | |
1058 | ||
1059 | void | |
1060 | lostconn(signo) | |
1061 | int signo; | |
1062 | { | |
1063 | if (!iamremote) | |
1064 | fprintf(stderr, "lost connection\n"); | |
1065 | exit(1); | |
1066 | } | |
1067 | ||
1068 | ||
1069 | void | |
1070 | alarmtimer(int wait) | |
1071 | { | |
1072 | struct itimerval itv; | |
1073 | ||
1074 | itv.it_value.tv_sec = wait; | |
1075 | itv.it_value.tv_usec = 0; | |
1076 | itv.it_interval = itv.it_value; | |
1077 | setitimer(ITIMER_REAL, &itv, NULL); | |
1078 | } | |
1079 | ||
1080 | void | |
1081 | updateprogressmeter(int ignore) | |
1082 | { | |
1083 | int save_errno = errno; | |
1084 | ||
1085 | progressmeter(0); | |
1086 | errno = save_errno; | |
1087 | } | |
1088 | ||
1089 | int | |
1090 | foregroundproc(void) | |
1091 | { | |
1092 | static pid_t pgrp = -1; | |
1093 | int ctty_pgrp; | |
1094 | ||
1095 | if (pgrp == -1) | |
1096 | pgrp = getpgrp(); | |
1097 | ||
1098 | #ifdef HAVE_TCGETPGRP | |
1099 | return ((ctty_pgrp = tcgetpgrp(STDOUT_FILENO)) != -1 && | |
1100 | ctty_pgrp == pgrp); | |
1101 | #else | |
1102 | return ((ioctl(STDOUT_FILENO, TIOCGPGRP, &ctty_pgrp) != -1 && | |
1103 | ctty_pgrp == pgrp)); | |
1104 | #endif | |
1105 | } | |
1106 | ||
1107 | void | |
1108 | progressmeter(int flag) | |
1109 | { | |
1110 | static const char prefixes[] = " KMGTP"; | |
1111 | static struct timeval lastupdate; | |
1112 | static off_t lastsize; | |
1113 | struct timeval now, td, wait; | |
1114 | off_t cursize, abbrevsize; | |
1115 | double elapsed; | |
1116 | int ratio, barlength, i, remaining; | |
1117 | char buf[256]; | |
1118 | ||
1119 | if (flag == -1) { | |
1120 | (void) gettimeofday(&start, (struct timezone *) 0); | |
1121 | lastupdate = start; | |
1122 | lastsize = 0; | |
1123 | } | |
1124 | if (foregroundproc() == 0) | |
1125 | return; | |
1126 | ||
1127 | (void) gettimeofday(&now, (struct timezone *) 0); | |
1128 | cursize = statbytes; | |
1129 | if (totalbytes != 0) { | |
1130 | ratio = 100.0 * cursize / totalbytes; | |
1131 | ratio = MAX(ratio, 0); | |
1132 | ratio = MIN(ratio, 100); | |
1133 | } else | |
1134 | ratio = 100; | |
1135 | ||
1136 | snprintf(buf, sizeof(buf), "\r%-20.20s %3d%% ", curfile, ratio); | |
1137 | ||
1138 | barlength = getttywidth() - 51; | |
1139 | barlength = (barlength <= MAX_BARLENGTH)?barlength:MAX_BARLENGTH; | |
1140 | if (barlength > 0) { | |
1141 | i = barlength * ratio / 100; | |
1142 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1143 | "|%.*s%*s|", i, BAR, barlength - i, ""); | |
1144 | } | |
1145 | i = 0; | |
1146 | abbrevsize = cursize; | |
1147 | while (abbrevsize >= 100000 && i < sizeof(prefixes)) { | |
1148 | i++; | |
1149 | abbrevsize >>= 10; | |
1150 | } | |
1151 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " %5lu %c%c ", | |
1152 | (unsigned long) abbrevsize, prefixes[i], | |
1153 | prefixes[i] == ' ' ? ' ' : 'B'); | |
1154 | ||
1155 | timersub(&now, &lastupdate, &wait); | |
1156 | if (cursize > lastsize) { | |
1157 | lastupdate = now; | |
1158 | lastsize = cursize; | |
1159 | if (wait.tv_sec >= STALLTIME) { | |
1160 | start.tv_sec += wait.tv_sec; | |
1161 | start.tv_usec += wait.tv_usec; | |
1162 | } | |
1163 | wait.tv_sec = 0; | |
1164 | } | |
1165 | timersub(&now, &start, &td); | |
1166 | elapsed = td.tv_sec + (td.tv_usec / 1000000.0); | |
1167 | ||
1168 | if (flag != 1 && | |
1169 | (statbytes <= 0 || elapsed <= 0.0 || cursize > totalbytes)) { | |
1170 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1171 | " --:-- ETA"); | |
1172 | } else if (wait.tv_sec >= STALLTIME) { | |
1173 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1174 | " - stalled -"); | |
1175 | } else { | |
1176 | if (flag != 1) | |
1177 | remaining = (int)(totalbytes / (statbytes / elapsed) - | |
1178 | elapsed); | |
1179 | else | |
1180 | remaining = elapsed; | |
1181 | ||
1182 | i = remaining / 3600; | |
1183 | if (i) | |
1184 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1185 | "%2d:", i); | |
1186 | else | |
1187 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1188 | " "); | |
1189 | i = remaining % 3600; | |
1190 | snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), | |
1191 | "%02d:%02d%s", i / 60, i % 60, | |
1192 | (flag != 1) ? " ETA" : " "); | |
1193 | } | |
1194 | atomicio(write, fileno(stdout), buf, strlen(buf)); | |
1195 | ||
1196 | if (flag == -1) { | |
1197 | mysignal(SIGALRM, updateprogressmeter); | |
1198 | alarmtimer(1); | |
1199 | } else if (flag == 1) { | |
1200 | alarmtimer(0); | |
1201 | atomicio(write, fileno(stdout), "\n", 1); | |
1202 | statbytes = 0; | |
1203 | } | |
1204 | } | |
1205 | ||
1206 | int | |
1207 | getttywidth(void) | |
1208 | { | |
1209 | struct winsize winsize; | |
1210 | ||
1211 | if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) != -1) | |
1212 | return (winsize.ws_col ? winsize.ws_col : 80); | |
1213 | else | |
1214 | return (80); | |
1215 | } | |
1216 | ||
1217 | void | |
1218 | addargs(char *fmt, ...) | |
1219 | { | |
1220 | va_list ap; | |
1221 | char buf[1024]; | |
1222 | ||
1223 | va_start(ap, fmt); | |
1224 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
1225 | va_end(ap); | |
1226 | ||
1227 | if (args.list == NULL) { | |
1228 | args.nalloc = 32; | |
1229 | args.num = 0; | |
1230 | args.list = xmalloc(args.nalloc * sizeof(char *)); | |
1231 | } else if (args.num+2 >= args.nalloc) { | |
1232 | args.nalloc *= 2; | |
1233 | args.list = xrealloc(args.list, args.nalloc * sizeof(char *)); | |
1234 | } | |
1235 | args.list[args.num++] = xstrdup(buf); | |
1236 | args.list[args.num] = NULL; | |
1237 | } |