Commit | Line | Data |
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1960e228 MP |
1 | /* -*- c-file-style: "linux" -*- |
2 | ||
3 | Copyright (C) 1996-2000 by Andrew Tridgell | |
4 | Copyright (C) Paul Mackerras 1996 | |
a9b31409 | 5 | Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
c627d613 AT |
6 | |
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | /* | |
23 | Utilities used in rsync | |
24 | ||
25 | tridge, June 1996 | |
26 | */ | |
27 | #include "rsync.h" | |
28 | ||
c7c11a0d DD |
29 | extern int verbose; |
30 | ||
f0359dd0 AT |
31 | |
32 | /**************************************************************************** | |
36349ea0 | 33 | Set a fd into nonblocking mode |
f0359dd0 AT |
34 | ****************************************************************************/ |
35 | void set_nonblocking(int fd) | |
36 | { | |
37 | int val; | |
38 | ||
39 | if((val = fcntl(fd, F_GETFL, 0)) == -1) | |
40 | return; | |
41 | if (!(val & NONBLOCK_FLAG)) { | |
42 | val |= NONBLOCK_FLAG; | |
43 | fcntl(fd, F_SETFL, val); | |
44 | } | |
45 | } | |
46 | ||
36349ea0 AT |
47 | /**************************************************************************** |
48 | Set a fd into blocking mode | |
49 | ****************************************************************************/ | |
50 | void set_blocking(int fd) | |
51 | { | |
52 | int val; | |
53 | ||
54 | if((val = fcntl(fd, F_GETFL, 0)) == -1) | |
55 | return; | |
56 | if (val & NONBLOCK_FLAG) { | |
57 | val &= ~NONBLOCK_FLAG; | |
58 | fcntl(fd, F_SETFL, val); | |
59 | } | |
60 | } | |
61 | ||
f0359dd0 AT |
62 | |
63 | /* create a file descriptor pair - like pipe() but use socketpair if | |
64 | possible (because of blocking issues on pipes) | |
65 | ||
66 | always set non-blocking | |
67 | */ | |
08f15335 AT |
68 | int fd_pair(int fd[2]) |
69 | { | |
f0359dd0 AT |
70 | int ret; |
71 | ||
08f15335 | 72 | #if HAVE_SOCKETPAIR |
f0359dd0 | 73 | ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd); |
08f15335 | 74 | #else |
f0359dd0 | 75 | ret = pipe(fd); |
08f15335 | 76 | #endif |
f0359dd0 AT |
77 | |
78 | if (ret == 0) { | |
79 | set_nonblocking(fd[0]); | |
80 | set_nonblocking(fd[1]); | |
81 | } | |
82 | ||
83 | return ret; | |
08f15335 AT |
84 | } |
85 | ||
86 | ||
08e5094d AT |
87 | /* this is derived from CVS code |
88 | ||
89 | note that in the child STDIN is set to blocking and STDOUT | |
90 | is set to non-blocking. This is necessary as rsh relies on stdin being blocking | |
91 | and ssh relies on stdout being non-blocking | |
92 | ||
93 | if blocking_io is set then use blocking io on both fds. That can be | |
94 | used to cope with badly broken rsh implementations like the one on | |
95 | solaris. | |
96 | */ | |
1b5814e3 | 97 | pid_t piped_child(char **command, int *f_in, int *f_out) |
c627d613 | 98 | { |
1b5814e3 MP |
99 | pid_t pid; |
100 | int to_child_pipe[2]; | |
101 | int from_child_pipe[2]; | |
102 | extern int blocking_io; | |
103 | ||
104 | if (fd_pair(to_child_pipe) < 0 || fd_pair(from_child_pipe) < 0) { | |
105 | rprintf(FERROR, "pipe: %s\n", strerror(errno)); | |
106 | exit_cleanup(RERR_IPC); | |
107 | } | |
108 | ||
109 | ||
110 | pid = do_fork(); | |
111 | if (pid == -1) { | |
112 | rprintf(FERROR, "fork: %s\n", strerror(errno)); | |
113 | exit_cleanup(RERR_IPC); | |
114 | } | |
115 | ||
116 | if (pid == 0) { | |
117 | extern int orig_umask; | |
118 | if (dup2(to_child_pipe[0], STDIN_FILENO) < 0 || | |
119 | close(to_child_pipe[1]) < 0 || | |
120 | close(from_child_pipe[0]) < 0 || | |
121 | dup2(from_child_pipe[1], STDOUT_FILENO) < 0) { | |
122 | rprintf(FERROR, "Failed to dup/close : %s\n", | |
123 | strerror(errno)); | |
124 | exit_cleanup(RERR_IPC); | |
125 | } | |
126 | if (to_child_pipe[0] != STDIN_FILENO) | |
127 | close(to_child_pipe[0]); | |
128 | if (from_child_pipe[1] != STDOUT_FILENO) | |
129 | close(from_child_pipe[1]); | |
130 | umask(orig_umask); | |
131 | set_blocking(STDIN_FILENO); | |
132 | if (blocking_io) { | |
133 | set_blocking(STDOUT_FILENO); | |
134 | } | |
135 | execvp(command[0], command); | |
136 | rprintf(FERROR, "Failed to exec %s : %s\n", | |
137 | command[0], strerror(errno)); | |
138 | exit_cleanup(RERR_IPC); | |
139 | } | |
140 | ||
141 | if (close(from_child_pipe[1]) < 0 || close(to_child_pipe[0]) < 0) { | |
142 | rprintf(FERROR, "Failed to close : %s\n", strerror(errno)); | |
143 | exit_cleanup(RERR_IPC); | |
144 | } | |
145 | ||
146 | *f_in = from_child_pipe[0]; | |
147 | *f_out = to_child_pipe[1]; | |
148 | ||
149 | return pid; | |
c627d613 AT |
150 | } |
151 | ||
19b27a48 | 152 | pid_t local_child(int argc, char **argv,int *f_in,int *f_out) |
366345fe | 153 | { |
19b27a48 | 154 | pid_t pid; |
366345fe AT |
155 | int to_child_pipe[2]; |
156 | int from_child_pipe[2]; | |
6902ed17 | 157 | extern int read_batch; /* dw */ |
366345fe | 158 | |
08f15335 AT |
159 | if (fd_pair(to_child_pipe) < 0 || |
160 | fd_pair(from_child_pipe) < 0) { | |
9486289c | 161 | rprintf(FERROR,"pipe: %s\n",strerror(errno)); |
65417579 | 162 | exit_cleanup(RERR_IPC); |
366345fe AT |
163 | } |
164 | ||
165 | ||
166 | pid = do_fork(); | |
19b27a48 | 167 | if (pid == -1) { |
9486289c | 168 | rprintf(FERROR,"fork: %s\n",strerror(errno)); |
65417579 | 169 | exit_cleanup(RERR_IPC); |
366345fe AT |
170 | } |
171 | ||
172 | if (pid == 0) { | |
173 | extern int am_sender; | |
174 | extern int am_server; | |
175 | ||
76f79ba7 | 176 | am_sender = read_batch ? 0 : !am_sender; |
366345fe AT |
177 | am_server = 1; |
178 | ||
179 | if (dup2(to_child_pipe[0], STDIN_FILENO) < 0 || | |
180 | close(to_child_pipe[1]) < 0 || | |
181 | close(from_child_pipe[0]) < 0 || | |
182 | dup2(from_child_pipe[1], STDOUT_FILENO) < 0) { | |
9486289c | 183 | rprintf(FERROR,"Failed to dup/close : %s\n",strerror(errno)); |
65417579 | 184 | exit_cleanup(RERR_IPC); |
366345fe AT |
185 | } |
186 | if (to_child_pipe[0] != STDIN_FILENO) close(to_child_pipe[0]); | |
187 | if (from_child_pipe[1] != STDOUT_FILENO) close(from_child_pipe[1]); | |
9486289c | 188 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
366345fe AT |
189 | } |
190 | ||
191 | if (close(from_child_pipe[1]) < 0 || | |
192 | close(to_child_pipe[0]) < 0) { | |
9486289c | 193 | rprintf(FERROR,"Failed to close : %s\n",strerror(errno)); |
65417579 | 194 | exit_cleanup(RERR_IPC); |
366345fe AT |
195 | } |
196 | ||
197 | *f_in = from_child_pipe[0]; | |
198 | *f_out = to_child_pipe[1]; | |
199 | ||
200 | return pid; | |
201 | } | |
202 | ||
203 | ||
c627d613 AT |
204 | |
205 | void out_of_memory(char *str) | |
206 | { | |
9486289c | 207 | rprintf(FERROR,"ERROR: out of memory in %s\n",str); |
65417579 | 208 | exit_cleanup(RERR_MALLOC); |
575f2fca AT |
209 | } |
210 | ||
211 | void overflow(char *str) | |
212 | { | |
9486289c | 213 | rprintf(FERROR,"ERROR: buffer overflow in %s\n",str); |
65417579 | 214 | exit_cleanup(RERR_MALLOC); |
c627d613 AT |
215 | } |
216 | ||
217 | ||
c627d613 AT |
218 | |
219 | int set_modtime(char *fname,time_t modtime) | |
220 | { | |
31e12522 AT |
221 | extern int dry_run; |
222 | if (dry_run) return 0; | |
223 | { | |
1e9f155a | 224 | #ifdef HAVE_UTIMBUF |
31e12522 AT |
225 | struct utimbuf tbuf; |
226 | tbuf.actime = time(NULL); | |
227 | tbuf.modtime = modtime; | |
228 | return utime(fname,&tbuf); | |
c627d613 | 229 | #elif defined(HAVE_UTIME) |
31e12522 AT |
230 | time_t t[2]; |
231 | t[0] = time(NULL); | |
232 | t[1] = modtime; | |
233 | return utime(fname,t); | |
c627d613 | 234 | #else |
31e12522 AT |
235 | struct timeval t[2]; |
236 | t[0].tv_sec = time(NULL); | |
237 | t[0].tv_usec = 0; | |
238 | t[1].tv_sec = modtime; | |
239 | t[1].tv_usec = 0; | |
240 | return utimes(fname,t); | |
c627d613 | 241 | #endif |
31e12522 | 242 | } |
c627d613 | 243 | } |
94481d91 | 244 | |
720b47f2 | 245 | |
6574b4f7 AT |
246 | /**************************************************************************** |
247 | create any necessary directories in fname. Unfortunately we don't know | |
248 | what perms to give the directory when this is called so we need to rely | |
249 | on the umask | |
250 | ****************************************************************************/ | |
251 | int create_directory_path(char *fname) | |
252 | { | |
253 | extern int orig_umask; | |
254 | char *p; | |
255 | ||
256 | while (*fname == '/') fname++; | |
257 | while (strncmp(fname,"./",2)==0) fname += 2; | |
258 | ||
259 | p = fname; | |
260 | while ((p=strchr(p,'/'))) { | |
261 | *p = 0; | |
1b2d733a | 262 | do_mkdir(fname,0777 & ~orig_umask); |
6574b4f7 AT |
263 | *p = '/'; |
264 | p++; | |
265 | } | |
266 | return 0; | |
267 | } | |
950ab32d AT |
268 | |
269 | ||
270 | /* Write LEN bytes at PTR to descriptor DESC, retrying if interrupted. | |
271 | Return LEN upon success, write's (negative) error code otherwise. | |
272 | ||
273 | derived from GNU C's cccp.c. | |
274 | */ | |
9dd891bb | 275 | static int full_write(int desc, char *ptr, size_t len) |
950ab32d AT |
276 | { |
277 | int total_written; | |
278 | ||
279 | total_written = 0; | |
280 | while (len > 0) { | |
281 | int written = write (desc, ptr, len); | |
282 | if (written < 0) { | |
283 | #ifdef EINTR | |
284 | if (errno == EINTR) | |
285 | continue; | |
286 | #endif | |
287 | return written; | |
288 | } | |
289 | total_written += written; | |
290 | ptr += written; | |
291 | len -= written; | |
292 | } | |
293 | return total_written; | |
294 | } | |
295 | ||
296 | /* Read LEN bytes at PTR from descriptor DESC, retrying if interrupted. | |
297 | Return the actual number of bytes read, zero for EOF, or negative | |
298 | for an error. | |
299 | ||
300 | derived from GNU C's cccp.c. */ | |
9dd891bb | 301 | static int safe_read(int desc, char *ptr, size_t len) |
950ab32d AT |
302 | { |
303 | int n_chars; | |
304 | ||
9dd891bb | 305 | if (len == 0) |
950ab32d AT |
306 | return len; |
307 | ||
308 | #ifdef EINTR | |
309 | do { | |
310 | n_chars = read(desc, ptr, len); | |
311 | } while (n_chars < 0 && errno == EINTR); | |
312 | #else | |
313 | n_chars = read(desc, ptr, len); | |
314 | #endif | |
315 | ||
316 | return n_chars; | |
317 | } | |
318 | ||
319 | ||
320 | /* copy a file - this is used in conjunction with the --temp-dir option */ | |
321 | int copy_file(char *source, char *dest, mode_t mode) | |
322 | { | |
323 | int ifd; | |
324 | int ofd; | |
325 | char buf[1024 * 8]; | |
326 | int len; /* Number of bytes read into `buf'. */ | |
327 | ||
8c9fd200 | 328 | ifd = do_open(source, O_RDONLY, 0); |
950ab32d | 329 | if (ifd == -1) { |
9486289c | 330 | rprintf(FERROR,"open %s: %s\n", |
950ab32d AT |
331 | source,strerror(errno)); |
332 | return -1; | |
333 | } | |
334 | ||
c7c11a0d | 335 | if (robust_unlink(dest) && errno != ENOENT) { |
9486289c | 336 | rprintf(FERROR,"unlink %s: %s\n", |
950ab32d AT |
337 | dest,strerror(errno)); |
338 | return -1; | |
339 | } | |
340 | ||
31e12522 | 341 | ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode); |
c46ded46 | 342 | if (ofd == -1) { |
9486289c | 343 | rprintf(FERROR,"open %s: %s\n", |
950ab32d AT |
344 | dest,strerror(errno)); |
345 | close(ifd); | |
346 | return -1; | |
347 | } | |
348 | ||
349 | while ((len = safe_read(ifd, buf, sizeof(buf))) > 0) { | |
350 | if (full_write(ofd, buf, len) < 0) { | |
9486289c | 351 | rprintf(FERROR,"write %s: %s\n", |
950ab32d AT |
352 | dest,strerror(errno)); |
353 | close(ifd); | |
354 | close(ofd); | |
355 | return -1; | |
356 | } | |
357 | } | |
358 | ||
359 | close(ifd); | |
360 | close(ofd); | |
361 | ||
362 | if (len < 0) { | |
9486289c | 363 | rprintf(FERROR,"read %s: %s\n", |
950ab32d AT |
364 | source,strerror(errno)); |
365 | return -1; | |
366 | } | |
367 | ||
368 | return 0; | |
369 | } | |
feaa89c4 | 370 | |
c7c11a0d DD |
371 | /* |
372 | Robust unlink: some OS'es (HPUX) refuse to unlink busy files, so | |
373 | rename to <path>/.rsyncNNN instead. Note that successive rsync runs | |
374 | will shuffle the filenames around a bit as long as the file is still | |
375 | busy; this is because this function does not know if the unlink call | |
376 | is due to a new file coming in, or --delete trying to remove old | |
377 | .rsyncNNN files, hence it renames it each time. | |
378 | */ | |
379 | /* MAX_RENAMES should be 10**MAX_RENAMES_DIGITS */ | |
380 | #define MAX_RENAMES_DIGITS 3 | |
381 | #define MAX_RENAMES 1000 | |
382 | ||
383 | int robust_unlink(char *fname) | |
384 | { | |
385 | #ifndef ETXTBSY | |
386 | return do_unlink(fname); | |
387 | #else | |
388 | static int counter = 1; | |
389 | int rc, pos, start; | |
390 | char path[MAXPATHLEN]; | |
391 | ||
392 | rc = do_unlink(fname); | |
393 | if ((rc == 0) || (errno != ETXTBSY)) | |
394 | return rc; | |
395 | ||
396 | strlcpy(path, fname, MAXPATHLEN); | |
397 | ||
398 | pos = strlen(path); | |
399 | while((path[--pos] != '/') && (pos >= 0)) | |
400 | ; | |
401 | ++pos; | |
402 | strlcpy(&path[pos], ".rsync", MAXPATHLEN-pos); | |
403 | pos += sizeof(".rsync")-1; | |
404 | ||
405 | if (pos > (MAXPATHLEN-MAX_RENAMES_DIGITS-1)) { | |
406 | errno = ETXTBSY; | |
407 | return -1; | |
408 | } | |
409 | ||
410 | /* start where the last one left off to reduce chance of clashes */ | |
411 | start = counter; | |
412 | do { | |
413 | sprintf(&path[pos], "%03d", counter); | |
414 | if (++counter >= MAX_RENAMES) | |
415 | counter = 1; | |
416 | } while (((rc = access(path, 0)) == 0) && (counter != start)); | |
417 | ||
418 | if (verbose > 0) | |
419 | rprintf(FINFO,"renaming %s to %s because of text busy\n", | |
420 | fname, path); | |
421 | ||
422 | /* maybe we should return rename()'s exit status? Nah. */ | |
423 | if (do_rename(fname, path) != 0) { | |
424 | errno = ETXTBSY; | |
425 | return -1; | |
426 | } | |
427 | return 0; | |
428 | #endif | |
429 | } | |
430 | ||
431 | int robust_rename(char *from, char *to) | |
432 | { | |
433 | #ifndef ETXTBSY | |
434 | return do_rename(from, to); | |
435 | #else | |
436 | int rc = do_rename(from, to); | |
437 | if ((rc == 0) || (errno != ETXTBSY)) | |
438 | return rc; | |
439 | if (robust_unlink(to) != 0) | |
440 | return -1; | |
441 | return do_rename(from, to); | |
442 | #endif | |
feaa89c4 | 443 | } |
3ba62a83 AT |
444 | |
445 | ||
446 | static pid_t all_pids[10]; | |
447 | static int num_pids; | |
448 | ||
449 | /* fork and record the pid of the child */ | |
450 | pid_t do_fork(void) | |
451 | { | |
452 | pid_t newpid = fork(); | |
453 | ||
454 | if (newpid) { | |
455 | all_pids[num_pids++] = newpid; | |
456 | } | |
457 | return newpid; | |
458 | } | |
459 | ||
460 | /* kill all children */ | |
461 | void kill_all(int sig) | |
462 | { | |
463 | int i; | |
464 | for (i=0;i<num_pids;i++) { | |
465 | if (all_pids[i] != getpid()) | |
466 | kill(all_pids[i], sig); | |
467 | } | |
468 | } | |
9486289c | 469 | |
8ef4ffd6 AT |
470 | /* turn a user name into a uid */ |
471 | int name_to_uid(char *name, uid_t *uid) | |
472 | { | |
473 | struct passwd *pass; | |
474 | if (!name || !*name) return 0; | |
475 | pass = getpwnam(name); | |
476 | if (pass) { | |
477 | *uid = pass->pw_uid; | |
478 | return 1; | |
479 | } | |
480 | return 0; | |
481 | } | |
482 | ||
483 | /* turn a group name into a gid */ | |
484 | int name_to_gid(char *name, gid_t *gid) | |
485 | { | |
486 | struct group *grp; | |
487 | if (!name || !*name) return 0; | |
488 | grp = getgrnam(name); | |
489 | if (grp) { | |
490 | *gid = grp->gr_gid; | |
491 | return 1; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
ff8b29b8 | 496 | |
31593dd6 AT |
497 | /* lock a byte range in a open file */ |
498 | int lock_range(int fd, int offset, int len) | |
0c515f17 | 499 | { |
31593dd6 | 500 | struct flock lock; |
0c515f17 | 501 | |
31593dd6 AT |
502 | lock.l_type = F_WRLCK; |
503 | lock.l_whence = SEEK_SET; | |
504 | lock.l_start = offset; | |
505 | lock.l_len = len; | |
506 | lock.l_pid = 0; | |
507 | ||
508 | return fcntl(fd,F_SETLK,&lock) == 0; | |
0c515f17 | 509 | } |
874895d5 AT |
510 | |
511 | ||
cb13abfe | 512 | static void glob_expand_one(char *s, char **argv, int *argc, int maxargs) |
874895d5 | 513 | { |
932be9aa | 514 | #if !(defined(HAVE_GLOB) && defined(HAVE_GLOB_H)) |
e42c9458 | 515 | if (!*s) s = "."; |
087bf010 | 516 | argv[*argc] = strdup(s); |
874895d5 AT |
517 | (*argc)++; |
518 | return; | |
519 | #else | |
cb13abfe | 520 | extern int sanitize_paths; |
874895d5 AT |
521 | glob_t globbuf; |
522 | int i; | |
523 | ||
e42c9458 AT |
524 | if (!*s) s = "."; |
525 | ||
cb13abfe DD |
526 | argv[*argc] = strdup(s); |
527 | if (sanitize_paths) { | |
528 | sanitize_path(argv[*argc], NULL); | |
529 | } | |
087bf010 | 530 | |
874895d5 AT |
531 | memset(&globbuf, 0, sizeof(globbuf)); |
532 | glob(argv[*argc], 0, NULL, &globbuf); | |
533 | if (globbuf.gl_pathc == 0) { | |
534 | (*argc)++; | |
535 | globfree(&globbuf); | |
536 | return; | |
537 | } | |
538 | for (i=0; i<(maxargs - (*argc)) && i<globbuf.gl_pathc;i++) { | |
539 | if (i == 0) free(argv[*argc]); | |
540 | argv[(*argc) + i] = strdup(globbuf.gl_pathv[i]); | |
541 | if (!argv[(*argc) + i]) out_of_memory("glob_expand"); | |
542 | } | |
543 | globfree(&globbuf); | |
544 | (*argc) += i; | |
545 | #endif | |
546 | } | |
5a96ee05 | 547 | |
cb13abfe | 548 | void glob_expand(char *base1, char **argv, int *argc, int maxargs) |
087bf010 AT |
549 | { |
550 | char *s = argv[*argc]; | |
551 | char *p, *q; | |
ba5e128d | 552 | char *base = base1; |
087bf010 AT |
553 | |
554 | if (!s || !*s) return; | |
555 | ||
e42c9458 AT |
556 | if (strncmp(s, base, strlen(base)) == 0) { |
557 | s += strlen(base); | |
558 | } | |
559 | ||
087bf010 AT |
560 | s = strdup(s); |
561 | if (!s) out_of_memory("glob_expand"); | |
562 | ||
8950ac03 | 563 | if (asprintf(&base," %s/", base1) <= 0) out_of_memory("glob_expand"); |
ba5e128d | 564 | |
087bf010 AT |
565 | q = s; |
566 | while ((p = strstr(q,base)) && ((*argc) < maxargs)) { | |
ba5e128d AT |
567 | /* split it at this point */ |
568 | *p = 0; | |
cb13abfe | 569 | glob_expand_one(q, argv, argc, maxargs); |
ba5e128d | 570 | q = p+strlen(base); |
087bf010 AT |
571 | } |
572 | ||
cb13abfe | 573 | if (*q && (*argc < maxargs)) glob_expand_one(q, argv, argc, maxargs); |
087bf010 AT |
574 | |
575 | free(s); | |
ba5e128d | 576 | free(base); |
087bf010 | 577 | } |
5a96ee05 AT |
578 | |
579 | /******************************************************************* | |
580 | convert a string to lower case | |
581 | ********************************************************************/ | |
582 | void strlower(char *s) | |
583 | { | |
584 | while (*s) { | |
585 | if (isupper(*s)) *s = tolower(*s); | |
586 | s++; | |
587 | } | |
588 | } | |
e42c9458 | 589 | |
fe8c0a98 AT |
590 | void *Realloc(void *p, int size) |
591 | { | |
592 | if (!p) return (void *)malloc(size); | |
593 | return (void *)realloc(p, size); | |
594 | } | |
5243c216 AT |
595 | |
596 | ||
597 | void clean_fname(char *name) | |
598 | { | |
599 | char *p; | |
600 | int l; | |
601 | int modified = 1; | |
602 | ||
603 | if (!name) return; | |
604 | ||
605 | while (modified) { | |
606 | modified = 0; | |
607 | ||
608 | if ((p=strstr(name,"/./"))) { | |
609 | modified = 1; | |
610 | while (*p) { | |
611 | p[0] = p[2]; | |
612 | p++; | |
613 | } | |
614 | } | |
615 | ||
616 | if ((p=strstr(name,"//"))) { | |
617 | modified = 1; | |
618 | while (*p) { | |
619 | p[0] = p[1]; | |
620 | p++; | |
621 | } | |
622 | } | |
623 | ||
624 | if (strncmp(p=name,"./",2) == 0) { | |
625 | modified = 1; | |
626 | do { | |
627 | p[0] = p[2]; | |
628 | } while (*p++); | |
629 | } | |
630 | ||
631 | l = strlen(p=name); | |
632 | if (l > 1 && p[l-1] == '/') { | |
633 | modified = 1; | |
634 | p[l-1] = 0; | |
635 | } | |
636 | } | |
637 | } | |
638 | ||
1b8e662a DD |
639 | /* |
640 | * Make path appear as if a chroot had occurred: | |
1b8e662a | 641 | * 1. remove leading "/" (or replace with "." if at end) |
cb13abfe | 642 | * 2. remove leading ".." components (except those allowed by "reldir") |
1b8e662a | 643 | * 3. delete any other "<dir>/.." (recursively) |
79452d46 | 644 | * Can only shrink paths, so sanitizes in place. |
b5f9e67d DD |
645 | * While we're at it, remove double slashes and "." components like |
646 | * clean_fname does(), but DON'T remove a trailing slash because that | |
647 | * is sometimes significant on command line arguments. | |
79452d46 DD |
648 | * If "reldir" is non-null, it is a sanitized directory that the path will be |
649 | * relative to, so allow as many ".." at the beginning of the path as | |
650 | * there are components in reldir. This is used for symbolic link targets. | |
651 | * If reldir is non-null and the path began with "/", to be completely like | |
652 | * a chroot we should add in depth levels of ".." at the beginning of the | |
653 | * path, but that would blow the assumption that the path doesn't grow and | |
654 | * it is not likely to end up being a valid symlink anyway, so just do | |
655 | * the normal removal of the leading "/" instead. | |
1b8e662a DD |
656 | * Contributed by Dave Dykstra <dwd@bell-labs.com> |
657 | */ | |
658 | ||
cb13abfe | 659 | void sanitize_path(char *p, char *reldir) |
1b8e662a | 660 | { |
44e2e578 | 661 | char *start, *sanp; |
cb13abfe DD |
662 | int depth = 0; |
663 | int allowdotdot = 0; | |
664 | ||
665 | if (reldir) { | |
666 | depth++; | |
667 | while (*reldir) { | |
668 | if (*reldir++ == '/') { | |
669 | depth++; | |
670 | } | |
671 | } | |
672 | } | |
44e2e578 DD |
673 | start = p; |
674 | sanp = p; | |
b5f9e67d DD |
675 | while (*p == '/') { |
676 | /* remove leading slashes */ | |
677 | p++; | |
678 | } | |
1b8e662a | 679 | while (*p != '\0') { |
b5f9e67d | 680 | /* this loop iterates once per filename component in p. |
44e2e578 | 681 | * both p (and sanp if the original had a slash) should |
b5f9e67d DD |
682 | * always be left pointing after a slash |
683 | */ | |
684 | if ((*p == '.') && ((*(p+1) == '/') || (*(p+1) == '\0'))) { | |
685 | /* skip "." component */ | |
686 | while (*++p == '/') { | |
687 | /* skip following slashes */ | |
688 | ; | |
689 | } | |
cb13abfe DD |
690 | continue; |
691 | } | |
692 | allowdotdot = 0; | |
693 | if ((*p == '.') && (*(p+1) == '.') && | |
1b8e662a | 694 | ((*(p+2) == '/') || (*(p+2) == '\0'))) { |
cb13abfe DD |
695 | /* ".." component followed by slash or end */ |
696 | if ((depth > 0) && (sanp == start)) { | |
697 | /* allow depth levels of .. at the beginning */ | |
698 | --depth; | |
699 | allowdotdot = 1; | |
700 | } else { | |
701 | p += 2; | |
702 | if (*p == '/') | |
703 | p++; | |
704 | if (sanp != start) { | |
705 | /* back up sanp one level */ | |
706 | --sanp; /* now pointing at slash */ | |
707 | while ((sanp > start) && (*(sanp - 1) != '/')) { | |
708 | /* skip back up to slash */ | |
709 | sanp--; | |
710 | } | |
b5f9e67d | 711 | } |
cb13abfe | 712 | continue; |
1b8e662a | 713 | } |
cb13abfe DD |
714 | } |
715 | while (1) { | |
716 | /* copy one component through next slash */ | |
717 | *sanp++ = *p++; | |
718 | if ((*p == '\0') || (*(p-1) == '/')) { | |
719 | while (*p == '/') { | |
720 | /* skip multiple slashes */ | |
721 | p++; | |
b5f9e67d | 722 | } |
cb13abfe | 723 | break; |
1b8e662a DD |
724 | } |
725 | } | |
cb13abfe DD |
726 | if (allowdotdot) { |
727 | /* move the virtual beginning to leave the .. alone */ | |
728 | start = sanp; | |
729 | } | |
1b8e662a | 730 | } |
cb13abfe | 731 | if ((sanp == start) && !allowdotdot) { |
b5f9e67d | 732 | /* ended up with nothing, so put in "." component */ |
79452d46 DD |
733 | /* |
734 | * note that the !allowdotdot doesn't prevent this from | |
735 | * happening in all allowed ".." situations, but I didn't | |
736 | * think it was worth putting in an extra variable to ensure | |
737 | * it since an extra "." won't hurt in those situations. | |
738 | */ | |
44e2e578 | 739 | *sanp++ = '.'; |
b5f9e67d | 740 | } |
44e2e578 | 741 | *sanp = '\0'; |
1b8e662a DD |
742 | } |
743 | ||
5243c216 AT |
744 | |
745 | static char curr_dir[MAXPATHLEN]; | |
746 | ||
747 | /* like chdir() but can be reversed with pop_dir() if save is set. It | |
748 | is also much faster as it remembers where we have been */ | |
749 | char *push_dir(char *dir, int save) | |
750 | { | |
751 | char *ret = curr_dir; | |
752 | static int initialised; | |
753 | ||
754 | if (!initialised) { | |
755 | initialised = 1; | |
756 | getcwd(curr_dir, sizeof(curr_dir)-1); | |
757 | } | |
758 | ||
c226b7c2 DD |
759 | if (!dir) return NULL; /* this call was probably just to initialize */ |
760 | ||
5243c216 AT |
761 | if (chdir(dir)) return NULL; |
762 | ||
763 | if (save) { | |
764 | ret = strdup(curr_dir); | |
765 | } | |
766 | ||
767 | if (*dir == '/') { | |
37f9805d | 768 | strlcpy(curr_dir, dir, sizeof(curr_dir)); |
5243c216 | 769 | } else { |
37f9805d AT |
770 | strlcat(curr_dir,"/", sizeof(curr_dir)); |
771 | strlcat(curr_dir,dir, sizeof(curr_dir)); | |
5243c216 AT |
772 | } |
773 | ||
774 | clean_fname(curr_dir); | |
775 | ||
776 | return ret; | |
777 | } | |
778 | ||
779 | /* reverse a push_dir call */ | |
780 | int pop_dir(char *dir) | |
781 | { | |
782 | int ret; | |
783 | ||
784 | ret = chdir(dir); | |
785 | if (ret) { | |
786 | free(dir); | |
787 | return ret; | |
788 | } | |
789 | ||
37f9805d | 790 | strlcpy(curr_dir, dir, sizeof(curr_dir)); |
5243c216 AT |
791 | |
792 | free(dir); | |
793 | ||
794 | return 0; | |
795 | } | |
aa9b77a5 AT |
796 | |
797 | /* we need to supply our own strcmp function for file list comparisons | |
798 | to ensure that signed/unsigned usage is consistent between machines. */ | |
799 | int u_strcmp(const char *cs1, const char *cs2) | |
800 | { | |
5a788ade AT |
801 | const uchar *s1 = (const uchar *)cs1; |
802 | const uchar *s2 = (const uchar *)cs2; | |
aa9b77a5 AT |
803 | |
804 | while (*s1 && *s2 && (*s1 == *s2)) { | |
805 | s1++; s2++; | |
806 | } | |
807 | ||
808 | return (int)*s1 - (int)*s2; | |
809 | } | |
eb86d661 | 810 | |
47f1218d MP |
811 | static OFF_T last_ofs; |
812 | static struct timeval print_time; | |
813 | static struct timeval start_time; | |
814 | static OFF_T start_ofs; | |
815 | ||
816 | static unsigned long msdiff(struct timeval *t1, struct timeval *t2) | |
817 | { | |
818 | return (t2->tv_sec - t1->tv_sec) * 1000 | |
819 | + (t2->tv_usec - t1->tv_usec) / 1000; | |
820 | } | |
821 | ||
822 | ||
823 | /** | |
6066594b MP |
824 | * @param ofs Current position in file |
825 | * @param size Total size of file | |
47f1218d MP |
826 | * @param is_last True if this is the last time progress will be |
827 | * printed for this file, so we should output a newline. (Not | |
828 | * necessarily the same as all bytes being received.) | |
829 | **/ | |
830 | static void rprint_progress(OFF_T ofs, OFF_T size, struct timeval *now, | |
831 | int is_last) | |
832 | { | |
62791bdf | 833 | int pct = (ofs == size) ? 100 : (int)((100.0*ofs)/size); |
47f1218d | 834 | unsigned long diff = msdiff(&start_time, now); |
f9c3005b | 835 | double rate = diff ? (double) (ofs-start_ofs) * 1000.0 / diff / 1024.0 : 0; |
a9b31409 | 836 | const char *units; |
f9c3005b | 837 | double remain = rate ? (double) (size-ofs) / rate / 1000.0: 0.0; |
7007bdda | 838 | int remain_h, remain_m, remain_s; |
47f1218d | 839 | |
47f1218d MP |
840 | if (rate > 1024*1024) { |
841 | rate /= 1024.0 * 1024.0; | |
842 | units = "GB/s"; | |
843 | } else if (rate > 1024) { | |
844 | rate /= 1024.0; | |
845 | units = "MB/s"; | |
846 | } else { | |
847 | units = "kB/s"; | |
848 | } | |
62791bdf | 849 | |
7007bdda MP |
850 | remain_s = (int) remain % 60; |
851 | remain_m = (int) (remain / 60.0) % 60; | |
852 | remain_h = (int) (remain / 3600.0); | |
47f1218d | 853 | |
7007bdda | 854 | rprintf(FINFO, "%12.0f %3d%% %7.2f%s %4d:%02d:%02d%s", |
47f1218d | 855 | (double) ofs, pct, rate, units, |
7007bdda | 856 | remain_h, remain_m, remain_s, |
47f1218d MP |
857 | is_last ? "\n" : "\r"); |
858 | } | |
eb86d661 | 859 | |
166aa723 | 860 | void end_progress(OFF_T size) |
eb86d661 AT |
861 | { |
862 | extern int do_progress, am_server; | |
863 | ||
864 | if (do_progress && !am_server) { | |
47f1218d MP |
865 | struct timeval now; |
866 | gettimeofday(&now, NULL); | |
867 | rprint_progress(size, size, &now, True); | |
868 | } | |
869 | last_ofs = 0; | |
870 | start_ofs = 0; | |
871 | print_time.tv_sec = print_time.tv_usec = 0; | |
872 | start_time.tv_sec = start_time.tv_usec = 0; | |
eb86d661 AT |
873 | } |
874 | ||
875 | void show_progress(OFF_T ofs, OFF_T size) | |
876 | { | |
877 | extern int do_progress, am_server; | |
47f1218d MP |
878 | struct timeval now; |
879 | ||
880 | gettimeofday(&now, NULL); | |
881 | ||
882 | if (!start_time.tv_sec && !start_time.tv_usec) { | |
883 | start_time.tv_sec = now.tv_sec; | |
884 | start_time.tv_usec = now.tv_usec; | |
885 | start_ofs = ofs; | |
886 | } | |
887 | ||
888 | if (do_progress | |
889 | && !am_server | |
890 | && ofs > last_ofs + 1000 | |
891 | && msdiff(&print_time, &now) > 250) { | |
892 | rprint_progress(ofs, size, &now, False); | |
893 | last_ofs = ofs; | |
894 | print_time.tv_sec = now.tv_sec; | |
895 | print_time.tv_usec = now.tv_usec; | |
eb86d661 AT |
896 | } |
897 | } | |
4b957c22 AT |
898 | |
899 | /* determine if a symlink points outside the current directory tree */ | |
900 | int unsafe_symlink(char *dest, char *src) | |
901 | { | |
902 | char *tok; | |
903 | int depth = 0; | |
904 | ||
905 | /* all absolute and null symlinks are unsafe */ | |
906 | if (!dest || !(*dest) || (*dest == '/')) return 1; | |
907 | ||
908 | src = strdup(src); | |
909 | if (!src) out_of_memory("unsafe_symlink"); | |
910 | ||
911 | /* find out what our safety margin is */ | |
912 | for (tok=strtok(src,"/"); tok; tok=strtok(NULL,"/")) { | |
913 | if (strcmp(tok,"..") == 0) { | |
914 | depth=0; | |
915 | } else if (strcmp(tok,".") == 0) { | |
916 | /* nothing */ | |
917 | } else { | |
918 | depth++; | |
919 | } | |
920 | } | |
921 | free(src); | |
922 | ||
923 | /* drop by one to account for the filename portion */ | |
924 | depth--; | |
925 | ||
926 | dest = strdup(dest); | |
927 | if (!dest) out_of_memory("unsafe_symlink"); | |
928 | ||
929 | for (tok=strtok(dest,"/"); tok; tok=strtok(NULL,"/")) { | |
930 | if (strcmp(tok,"..") == 0) { | |
931 | depth--; | |
932 | } else if (strcmp(tok,".") == 0) { | |
933 | /* nothing */ | |
934 | } else { | |
935 | depth++; | |
936 | } | |
937 | /* if at any point we go outside the current directory then | |
938 | stop - it is unsafe */ | |
939 | if (depth < 0) break; | |
940 | } | |
941 | ||
942 | free(dest); | |
943 | return (depth < 0); | |
944 | } | |
375a4556 | 945 | |
f7632fc6 AT |
946 | |
947 | /**************************************************************************** | |
948 | return the date and time as a string | |
949 | ****************************************************************************/ | |
950 | char *timestring(time_t t) | |
951 | { | |
952 | static char TimeBuf[200]; | |
953 | struct tm *tm = localtime(&t); | |
954 | ||
955 | #ifdef HAVE_STRFTIME | |
956 | strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %T",tm); | |
957 | #else | |
37f9805d | 958 | strlcpy(TimeBuf, asctime(tm), sizeof(TimeBuf)); |
f7632fc6 AT |
959 | #endif |
960 | ||
961 | if (TimeBuf[strlen(TimeBuf)-1] == '\n') { | |
962 | TimeBuf[strlen(TimeBuf)-1] = 0; | |
963 | } | |
964 | ||
965 | return(TimeBuf); | |
966 | } | |
967 | ||
9ec16c83 | 968 | |
e1bd49d6 MP |
969 | /** |
970 | * Sleep for a specified number of milliseconds. | |
971 | * | |
972 | * Always returns TRUE. (In the future it might return FALSE if | |
973 | * interrupted.) | |
974 | **/ | |
975 | int msleep(int t) | |
9ec16c83 AT |
976 | { |
977 | int tdiff=0; | |
978 | struct timeval tval,t1,t2; | |
979 | ||
980 | gettimeofday(&t1, NULL); | |
981 | gettimeofday(&t2, NULL); | |
982 | ||
983 | while (tdiff < t) { | |
984 | tval.tv_sec = (t-tdiff)/1000; | |
985 | tval.tv_usec = 1000*((t-tdiff)%1000); | |
986 | ||
987 | errno = 0; | |
988 | select(0,NULL,NULL, NULL, &tval); | |
989 | ||
990 | gettimeofday(&t2, NULL); | |
991 | tdiff = (t2.tv_sec - t1.tv_sec)*1000 + | |
992 | (t2.tv_usec - t1.tv_usec)/1000; | |
993 | } | |
e1bd49d6 MP |
994 | |
995 | return True; | |
9ec16c83 AT |
996 | } |
997 | ||
998 | ||
5b56cc19 AT |
999 | /******************************************************************* |
1000 | Determine if two file modification times are equivalent (either exact | |
1001 | or in the modification timestamp window established by --modify-window) | |
1002 | Returns 0 if the times should be treated as the same, 1 if the | |
1003 | first is later and -1 if the 2nd is later | |
1004 | *******************************************************************/ | |
1005 | int cmp_modtime(time_t file1, time_t file2) | |
1006 | { | |
5b56cc19 AT |
1007 | extern int modify_window; |
1008 | ||
1009 | if (file2 > file1) { | |
1010 | if (file2 - file1 <= modify_window) return 0; | |
1011 | return -1; | |
1012 | } | |
1013 | if (file1 - file2 <= modify_window) return 0; | |
1014 | return 1; | |
1015 | } | |
1016 | ||
1017 | ||
1018 | #ifdef __INSURE__XX | |
0f8f98c8 AT |
1019 | #include <dlfcn.h> |
1020 | ||
1021 | /******************************************************************* | |
1022 | This routine is a trick to immediately catch errors when debugging | |
1023 | with insure. A xterm with a gdb is popped up when insure catches | |
1024 | a error. It is Linux specific. | |
1025 | ********************************************************************/ | |
1026 | int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6) | |
1027 | { | |
1028 | static int (*fn)(); | |
1029 | int ret; | |
8950ac03 | 1030 | char *cmd; |
0f8f98c8 | 1031 | |
8950ac03 | 1032 | asprintf(&cmd, "/usr/X11R6/bin/xterm -display :0 -T Panic -n Panic -e /bin/sh -c 'cat /tmp/ierrs.*.%d ; gdb /proc/%d/exe %d'", |
0f8f98c8 AT |
1033 | getpid(), getpid(), getpid()); |
1034 | ||
1035 | if (!fn) { | |
1036 | static void *h; | |
1037 | h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY); | |
1038 | fn = dlsym(h, "_Insure_trap_error"); | |
1039 | } | |
1040 | ||
1041 | ret = fn(a1, a2, a3, a4, a5, a6); | |
1042 | ||
1043 | system(cmd); | |
1044 | ||
8950ac03 AT |
1045 | free(cmd); |
1046 | ||
0f8f98c8 AT |
1047 | return ret; |
1048 | } | |
1049 | #endif |