Commit | Line | Data |
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1960e228 | 1 | /* -*- c-file-style: "linux" -*- |
5cb37436 WD |
2 | * |
3 | * Copyright (C) 1996-2000 by Andrew Tridgell | |
0ecfbf27 MP |
4 | * Copyright (C) Paul Mackerras 1996 |
5 | * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> | |
5cb37436 | 6 | * |
0ecfbf27 MP |
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. | |
5cb37436 | 11 | * |
0ecfbf27 MP |
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. | |
5cb37436 | 16 | * |
0ecfbf27 MP |
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 | */ | |
c627d613 | 21 | |
ac13ad10 | 22 | /** |
0ecfbf27 | 23 | * @file |
ac13ad10 | 24 | * |
5cb37436 | 25 | * Utilities used in rsync |
ac13ad10 | 26 | **/ |
c627d613 | 27 | |
c627d613 AT |
28 | #include "rsync.h" |
29 | ||
c7c11a0d | 30 | extern int verbose; |
bc6ebcd2 WD |
31 | extern int dry_run; |
32 | extern int module_id; | |
33 | extern int modify_window; | |
7e43da81 | 34 | extern int relative_paths; |
e175fb07 | 35 | extern int human_readable; |
e9357a2d | 36 | extern mode_t orig_umask; |
a7260c40 | 37 | extern char *partial_dir; |
7842418b | 38 | extern struct filter_list_struct server_filter_list; |
c7c11a0d | 39 | |
0ecfbf27 MP |
40 | int sanitize_paths = 0; |
41 | ||
42 | ||
f0359dd0 | 43 | |
ac13ad10 | 44 | /** |
0ecfbf27 MP |
45 | * Set a fd into nonblocking mode |
46 | **/ | |
f0359dd0 AT |
47 | void set_nonblocking(int fd) |
48 | { | |
49 | int val; | |
50 | ||
0ecfbf27 | 51 | if ((val = fcntl(fd, F_GETFL, 0)) == -1) |
f0359dd0 AT |
52 | return; |
53 | if (!(val & NONBLOCK_FLAG)) { | |
54 | val |= NONBLOCK_FLAG; | |
55 | fcntl(fd, F_SETFL, val); | |
56 | } | |
57 | } | |
58 | ||
ac13ad10 | 59 | /** |
0ecfbf27 MP |
60 | * Set a fd into blocking mode |
61 | **/ | |
36349ea0 AT |
62 | void set_blocking(int fd) |
63 | { | |
64 | int val; | |
65 | ||
0ecfbf27 | 66 | if ((val = fcntl(fd, F_GETFL, 0)) == -1) |
36349ea0 AT |
67 | return; |
68 | if (val & NONBLOCK_FLAG) { | |
69 | val &= ~NONBLOCK_FLAG; | |
70 | fcntl(fd, F_SETFL, val); | |
71 | } | |
72 | } | |
73 | ||
ac13ad10 | 74 | /** |
0ecfbf27 MP |
75 | * Create a file descriptor pair - like pipe() but use socketpair if |
76 | * possible (because of blocking issues on pipes). | |
5cb37436 | 77 | * |
0ecfbf27 | 78 | * Always set non-blocking. |
f0359dd0 | 79 | */ |
08f15335 AT |
80 | int fd_pair(int fd[2]) |
81 | { | |
f0359dd0 AT |
82 | int ret; |
83 | ||
4f5b0756 | 84 | #ifdef HAVE_SOCKETPAIR |
f0359dd0 | 85 | ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd); |
08f15335 | 86 | #else |
f0359dd0 | 87 | ret = pipe(fd); |
08f15335 | 88 | #endif |
f0359dd0 AT |
89 | |
90 | if (ret == 0) { | |
91 | set_nonblocking(fd[0]); | |
92 | set_nonblocking(fd[1]); | |
93 | } | |
0ecfbf27 | 94 | |
f0359dd0 | 95 | return ret; |
08f15335 AT |
96 | } |
97 | ||
0ecfbf27 | 98 | void print_child_argv(char **cmd) |
5ad0e46f | 99 | { |
1bbd10fe | 100 | rprintf(FINFO, "opening connection using "); |
5ad0e46f MP |
101 | for (; *cmd; cmd++) { |
102 | /* Look for characters that ought to be quoted. This | |
103 | * is not a great quoting algorithm, but it's | |
104 | * sufficient for a log message. */ | |
105 | if (strspn(*cmd, "abcdefghijklmnopqrstuvwxyz" | |
106 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
107 | "0123456789" | |
108 | ",.-_=+@/") != strlen(*cmd)) { | |
785abd48 | 109 | rprintf(FINFO, "\"%s\" ", *cmd); |
5ad0e46f | 110 | } else { |
785abd48 | 111 | rprintf(FINFO, "%s ", *cmd); |
5ad0e46f MP |
112 | } |
113 | } | |
114 | rprintf(FINFO, "\n"); | |
115 | } | |
116 | ||
c627d613 AT |
117 | void out_of_memory(char *str) |
118 | { | |
c284f34a WD |
119 | rprintf(FERROR, "ERROR: out of memory in %s\n", str); |
120 | exit_cleanup(RERR_MALLOC); | |
575f2fca AT |
121 | } |
122 | ||
a1f99493 | 123 | void overflow_exit(char *str) |
575f2fca | 124 | { |
c284f34a WD |
125 | rprintf(FERROR, "ERROR: buffer overflow in %s\n", str); |
126 | exit_cleanup(RERR_MALLOC); | |
c627d613 AT |
127 | } |
128 | ||
25007999 | 129 | int set_modtime(char *fname, time_t modtime, mode_t mode) |
c627d613 | 130 | { |
25007999 WD |
131 | #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES |
132 | if (S_ISLNK(mode)) | |
133 | return 1; | |
134 | #endif | |
135 | ||
404e813c MP |
136 | if (verbose > 2) { |
137 | rprintf(FINFO, "set modtime of %s to (%ld) %s", | |
785abd48 | 138 | fname, (long)modtime, |
404e813c MP |
139 | asctime(localtime(&modtime))); |
140 | } | |
5cb37436 | 141 | |
15778afb WD |
142 | if (dry_run) |
143 | return 0; | |
144 | ||
31e12522 | 145 | { |
25007999 WD |
146 | #ifdef HAVE_UTIMES |
147 | struct timeval t[2]; | |
148 | t[0].tv_sec = time(NULL); | |
149 | t[0].tv_usec = 0; | |
150 | t[1].tv_sec = modtime; | |
151 | t[1].tv_usec = 0; | |
152 | # ifdef HAVE_LUTIMES | |
153 | if (S_ISLNK(mode)) | |
154 | return lutimes(fname, t); | |
155 | # endif | |
156 | return utimes(fname, t); | |
157 | #elif defined HAVE_UTIMBUF | |
5cb37436 | 158 | struct utimbuf tbuf; |
31e12522 AT |
159 | tbuf.actime = time(NULL); |
160 | tbuf.modtime = modtime; | |
161 | return utime(fname,&tbuf); | |
4f5b0756 | 162 | #elif defined HAVE_UTIME |
31e12522 AT |
163 | time_t t[2]; |
164 | t[0] = time(NULL); | |
165 | t[1] = modtime; | |
166 | return utime(fname,t); | |
c627d613 | 167 | #else |
25007999 | 168 | #error No file-time-modification routine found! |
c627d613 | 169 | #endif |
31e12522 | 170 | } |
c627d613 | 171 | } |
94481d91 | 172 | |
e9357a2d WD |
173 | /* This creates a new directory with default permissions. Since there |
174 | * might be some directory-default permissions affecting this, we can't | |
175 | * force the permissions directly using the original umask and mkdir(). */ | |
176 | int mkdir_defmode(char *fname) | |
177 | { | |
178 | int ret; | |
179 | ||
180 | umask(orig_umask); | |
181 | ret = do_mkdir(fname, ACCESSPERMS); | |
182 | umask(0); | |
183 | ||
184 | return ret; | |
185 | } | |
186 | ||
85c41757 WD |
187 | /* Create any necessary directories in fname. Any missing directories are |
188 | * created with default permissions. */ | |
e9357a2d | 189 | int create_directory_path(char *fname) |
6574b4f7 | 190 | { |
6574b4f7 | 191 | char *p; |
85c41757 | 192 | int ret = 0; |
6574b4f7 | 193 | |
c284f34a WD |
194 | while (*fname == '/') |
195 | fname++; | |
196 | while (strncmp(fname, "./", 2) == 0) | |
197 | fname += 2; | |
6574b4f7 | 198 | |
85c41757 | 199 | umask(orig_umask); |
6574b4f7 | 200 | p = fname; |
c284f34a | 201 | while ((p = strchr(p,'/')) != NULL) { |
85c41757 WD |
202 | *p = '\0'; |
203 | if (do_mkdir(fname, ACCESSPERMS) < 0 && errno != EEXIST) | |
204 | ret = -1; | |
205 | *p++ = '/'; | |
6574b4f7 | 206 | } |
85c41757 WD |
207 | umask(0); |
208 | ||
209 | return ret; | |
6574b4f7 | 210 | } |
950ab32d | 211 | |
ac13ad10 MP |
212 | /** |
213 | * Write @p len bytes at @p ptr to descriptor @p desc, retrying if | |
214 | * interrupted. | |
215 | * | |
216 | * @retval len upon success | |
217 | * | |
218 | * @retval <0 write's (negative) error code | |
219 | * | |
220 | * Derived from GNU C's cccp.c. | |
221 | */ | |
6566d205 | 222 | int full_write(int desc, char *ptr, size_t len) |
950ab32d AT |
223 | { |
224 | int total_written; | |
5cb37436 | 225 | |
950ab32d AT |
226 | total_written = 0; |
227 | while (len > 0) { | |
5c1b7bfd | 228 | int written = write(desc, ptr, len); |
950ab32d | 229 | if (written < 0) { |
950ab32d AT |
230 | if (errno == EINTR) |
231 | continue; | |
950ab32d AT |
232 | return written; |
233 | } | |
234 | total_written += written; | |
235 | ptr += written; | |
236 | len -= written; | |
237 | } | |
238 | return total_written; | |
239 | } | |
240 | ||
ac13ad10 MP |
241 | /** |
242 | * Read @p len bytes at @p ptr from descriptor @p desc, retrying if | |
243 | * interrupted. | |
244 | * | |
245 | * @retval >0 the actual number of bytes read | |
246 | * | |
247 | * @retval 0 for EOF | |
248 | * | |
249 | * @retval <0 for an error. | |
250 | * | |
251 | * Derived from GNU C's cccp.c. */ | |
9dd891bb | 252 | static int safe_read(int desc, char *ptr, size_t len) |
950ab32d AT |
253 | { |
254 | int n_chars; | |
5cb37436 | 255 | |
9dd891bb | 256 | if (len == 0) |
950ab32d | 257 | return len; |
5cb37436 | 258 | |
950ab32d AT |
259 | do { |
260 | n_chars = read(desc, ptr, len); | |
261 | } while (n_chars < 0 && errno == EINTR); | |
5cb37436 | 262 | |
950ab32d AT |
263 | return n_chars; |
264 | } | |
265 | ||
ac13ad10 MP |
266 | /** Copy a file. |
267 | * | |
3e13004b WD |
268 | * This is used in conjunction with the --temp-dir, --backup, and |
269 | * --copy-dest options. */ | |
63cf5ae7 | 270 | int copy_file(const char *source, const char *dest, mode_t mode) |
950ab32d AT |
271 | { |
272 | int ifd; | |
273 | int ofd; | |
274 | char buf[1024 * 8]; | |
275 | int len; /* Number of bytes read into `buf'. */ | |
276 | ||
8c9fd200 | 277 | ifd = do_open(source, O_RDONLY, 0); |
950ab32d | 278 | if (ifd == -1) { |
d62bcc17 | 279 | rsyserr(FERROR, errno, "open %s", full_fname(source)); |
950ab32d AT |
280 | return -1; |
281 | } | |
282 | ||
c7c11a0d | 283 | if (robust_unlink(dest) && errno != ENOENT) { |
d62bcc17 | 284 | rsyserr(FERROR, errno, "unlink %s", full_fname(dest)); |
950ab32d AT |
285 | return -1; |
286 | } | |
287 | ||
31e12522 | 288 | ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode); |
c46ded46 | 289 | if (ofd == -1) { |
d62bcc17 | 290 | rsyserr(FERROR, errno, "open %s", full_fname(dest)); |
950ab32d AT |
291 | close(ifd); |
292 | return -1; | |
293 | } | |
294 | ||
5cb37436 | 295 | while ((len = safe_read(ifd, buf, sizeof buf)) > 0) { |
950ab32d | 296 | if (full_write(ofd, buf, len) < 0) { |
d62bcc17 | 297 | rsyserr(FERROR, errno, "write %s", full_fname(dest)); |
950ab32d AT |
298 | close(ifd); |
299 | close(ofd); | |
300 | return -1; | |
301 | } | |
302 | } | |
303 | ||
8b602edd | 304 | if (len < 0) { |
d62bcc17 | 305 | rsyserr(FERROR, errno, "read %s", full_fname(source)); |
8b602edd WD |
306 | close(ifd); |
307 | close(ofd); | |
308 | return -1; | |
309 | } | |
310 | ||
9f27cd8c | 311 | if (close(ifd) < 0) { |
d62bcc17 WD |
312 | rsyserr(FINFO, errno, "close failed on %s", |
313 | full_fname(source)); | |
9f27cd8c WD |
314 | } |
315 | ||
316 | if (close(ofd) < 0) { | |
d62bcc17 WD |
317 | rsyserr(FERROR, errno, "close failed on %s", |
318 | full_fname(dest)); | |
9f27cd8c WD |
319 | return -1; |
320 | } | |
950ab32d | 321 | |
950ab32d AT |
322 | return 0; |
323 | } | |
feaa89c4 | 324 | |
c7c11a0d DD |
325 | /* MAX_RENAMES should be 10**MAX_RENAMES_DIGITS */ |
326 | #define MAX_RENAMES_DIGITS 3 | |
327 | #define MAX_RENAMES 1000 | |
328 | ||
ac13ad10 | 329 | /** |
b4235b31 MP |
330 | * Robust unlink: some OS'es (HPUX) refuse to unlink busy files, so |
331 | * rename to <path>/.rsyncNNN instead. | |
332 | * | |
333 | * Note that successive rsync runs will shuffle the filenames around a | |
334 | * bit as long as the file is still busy; this is because this function | |
335 | * does not know if the unlink call is due to a new file coming in, or | |
336 | * --delete trying to remove old .rsyncNNN files, hence it renames it | |
337 | * each time. | |
338 | **/ | |
63cf5ae7 | 339 | int robust_unlink(const char *fname) |
c7c11a0d DD |
340 | { |
341 | #ifndef ETXTBSY | |
342 | return do_unlink(fname); | |
343 | #else | |
344 | static int counter = 1; | |
345 | int rc, pos, start; | |
346 | char path[MAXPATHLEN]; | |
347 | ||
348 | rc = do_unlink(fname); | |
c284f34a | 349 | if (rc == 0 || errno != ETXTBSY) |
c7c11a0d DD |
350 | return rc; |
351 | ||
c284f34a WD |
352 | if ((pos = strlcpy(path, fname, MAXPATHLEN)) >= MAXPATHLEN) |
353 | pos = MAXPATHLEN - 1; | |
c7c11a0d | 354 | |
c284f34a WD |
355 | while (pos > 0 && path[pos-1] != '/') |
356 | pos--; | |
5cb37436 | 357 | pos += strlcpy(path+pos, ".rsync", MAXPATHLEN-pos); |
c7c11a0d DD |
358 | |
359 | if (pos > (MAXPATHLEN-MAX_RENAMES_DIGITS-1)) { | |
360 | errno = ETXTBSY; | |
361 | return -1; | |
362 | } | |
363 | ||
364 | /* start where the last one left off to reduce chance of clashes */ | |
365 | start = counter; | |
366 | do { | |
367 | sprintf(&path[pos], "%03d", counter); | |
368 | if (++counter >= MAX_RENAMES) | |
369 | counter = 1; | |
c284f34a | 370 | } while ((rc = access(path, 0)) == 0 && counter != start); |
c7c11a0d | 371 | |
4791825d | 372 | if (verbose > 0) { |
c7c11a0d | 373 | rprintf(FINFO,"renaming %s to %s because of text busy\n", |
785abd48 | 374 | fname, path); |
4791825d | 375 | } |
c7c11a0d DD |
376 | |
377 | /* maybe we should return rename()'s exit status? Nah. */ | |
378 | if (do_rename(fname, path) != 0) { | |
379 | errno = ETXTBSY; | |
380 | return -1; | |
381 | } | |
382 | return 0; | |
383 | #endif | |
384 | } | |
385 | ||
630f548f | 386 | /* Returns 0 on successful rename, 1 if we successfully copied the file |
3ed8eafc WD |
387 | * across filesystems, -2 if copy_file() failed, and -1 on other errors. |
388 | * If partialptr is not NULL and we need to do a copy, copy the file into | |
389 | * the active partial-dir instead of over the destination file. */ | |
390 | int robust_rename(char *from, char *to, char *partialptr, | |
391 | int mode) | |
c7c11a0d | 392 | { |
62c9e6b3 WD |
393 | int tries = 4; |
394 | ||
395 | while (tries--) { | |
396 | if (do_rename(from, to) == 0) | |
397 | return 0; | |
398 | ||
399 | switch (errno) { | |
400 | #ifdef ETXTBSY | |
401 | case ETXTBSY: | |
402 | if (robust_unlink(to) != 0) | |
403 | return -1; | |
404 | break; | |
c7c11a0d | 405 | #endif |
62c9e6b3 | 406 | case EXDEV: |
3ed8eafc WD |
407 | if (partialptr) { |
408 | if (!handle_partial_dir(partialptr,PDIR_CREATE)) | |
409 | return -1; | |
410 | to = partialptr; | |
411 | } | |
62c9e6b3 WD |
412 | if (copy_file(from, to, mode) != 0) |
413 | return -2; | |
414 | do_unlink(from); | |
630f548f | 415 | return 1; |
62c9e6b3 WD |
416 | default: |
417 | return -1; | |
418 | } | |
419 | } | |
420 | return -1; | |
feaa89c4 | 421 | } |
3ba62a83 | 422 | |
3ba62a83 AT |
423 | static pid_t all_pids[10]; |
424 | static int num_pids; | |
425 | ||
4cf64834 | 426 | /** Fork and record the pid of the child. **/ |
3ba62a83 AT |
427 | pid_t do_fork(void) |
428 | { | |
429 | pid_t newpid = fork(); | |
5cb37436 | 430 | |
4cf64834 | 431 | if (newpid != 0 && newpid != -1) { |
3ba62a83 AT |
432 | all_pids[num_pids++] = newpid; |
433 | } | |
434 | return newpid; | |
435 | } | |
436 | ||
4cf64834 MP |
437 | /** |
438 | * Kill all children. | |
439 | * | |
440 | * @todo It would be kind of nice to make sure that they are actually | |
441 | * all our children before we kill them, because their pids may have | |
442 | * been recycled by some other process. Perhaps when we wait for a | |
443 | * child, we should remove it from this array. Alternatively we could | |
444 | * perhaps use process groups, but I think that would not work on | |
445 | * ancient Unix versions that don't support them. | |
446 | **/ | |
3ba62a83 AT |
447 | void kill_all(int sig) |
448 | { | |
449 | int i; | |
4cf64834 MP |
450 | |
451 | for (i = 0; i < num_pids; i++) { | |
452 | /* Let's just be a little careful where we | |
453 | * point that gun, hey? See kill(2) for the | |
454 | * magic caused by negative values. */ | |
455 | pid_t p = all_pids[i]; | |
456 | ||
457 | if (p == getpid()) | |
458 | continue; | |
459 | if (p <= 0) | |
460 | continue; | |
461 | ||
462 | kill(p, sig); | |
3ba62a83 AT |
463 | } |
464 | } | |
9486289c | 465 | |
ac13ad10 | 466 | /** Turn a user name into a uid */ |
8ef4ffd6 AT |
467 | int name_to_uid(char *name, uid_t *uid) |
468 | { | |
469 | struct passwd *pass; | |
b5bd5542 WD |
470 | if (!name || !*name) |
471 | return 0; | |
8ef4ffd6 AT |
472 | pass = getpwnam(name); |
473 | if (pass) { | |
474 | *uid = pass->pw_uid; | |
475 | return 1; | |
476 | } | |
477 | return 0; | |
478 | } | |
479 | ||
ac13ad10 | 480 | /** Turn a group name into a gid */ |
8ef4ffd6 AT |
481 | int name_to_gid(char *name, gid_t *gid) |
482 | { | |
483 | struct group *grp; | |
b5bd5542 WD |
484 | if (!name || !*name) |
485 | return 0; | |
8ef4ffd6 AT |
486 | grp = getgrnam(name); |
487 | if (grp) { | |
488 | *gid = grp->gr_gid; | |
489 | return 1; | |
490 | } | |
491 | return 0; | |
492 | } | |
493 | ||
ac13ad10 | 494 | /** Lock a byte range in a open file */ |
31593dd6 | 495 | int lock_range(int fd, int offset, int len) |
0c515f17 | 496 | { |
31593dd6 | 497 | struct flock lock; |
0c515f17 | 498 | |
31593dd6 AT |
499 | lock.l_type = F_WRLCK; |
500 | lock.l_whence = SEEK_SET; | |
501 | lock.l_start = offset; | |
502 | lock.l_len = len; | |
503 | lock.l_pid = 0; | |
5cb37436 | 504 | |
31593dd6 | 505 | return fcntl(fd,F_SETLK,&lock) == 0; |
0c515f17 | 506 | } |
874895d5 | 507 | |
7842418b | 508 | static int filter_server_path(char *arg) |
4791825d WD |
509 | { |
510 | char *s; | |
4791825d | 511 | |
7842418b | 512 | if (server_filter_list.head) { |
4791825d WD |
513 | for (s = arg; (s = strchr(s, '/')) != NULL; ) { |
514 | *s = '\0'; | |
7842418b | 515 | if (check_filter(&server_filter_list, arg, 1) < 0) { |
4791825d WD |
516 | /* We must leave arg truncated! */ |
517 | return 1; | |
518 | } | |
519 | *s++ = '/'; | |
520 | } | |
521 | } | |
522 | return 0; | |
523 | } | |
874895d5 | 524 | |
b7061c82 WD |
525 | static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr, |
526 | int *maxargs_ptr) | |
874895d5 | 527 | { |
b7061c82 | 528 | char **argv = *argv_ptr; |
b5bd5542 | 529 | int argc = *argc_ptr; |
b7061c82 | 530 | int maxargs = *maxargs_ptr; |
4f5b0756 | 531 | #if !defined HAVE_GLOB || !defined HAVE_GLOB_H |
b7061c82 WD |
532 | if (argc == maxargs) { |
533 | maxargs += MAX_ARGS; | |
534 | if (!(argv = realloc_array(argv, char *, maxargs))) | |
535 | out_of_memory("glob_expand_one"); | |
536 | *argv_ptr = argv; | |
537 | *maxargs_ptr = maxargs; | |
538 | } | |
4135d091 WD |
539 | if (!*s) |
540 | s = "."; | |
b5bd5542 | 541 | s = argv[argc++] = strdup(s); |
7842418b | 542 | filter_server_path(s); |
874895d5 AT |
543 | #else |
544 | glob_t globbuf; | |
874895d5 | 545 | |
b5bd5542 WD |
546 | if (maxargs <= argc) |
547 | return; | |
4135d091 WD |
548 | if (!*s) |
549 | s = "."; | |
e42c9458 | 550 | |
4135d091 | 551 | if (sanitize_paths) |
1d6b8f9a | 552 | s = sanitize_path(NULL, s, "", 0); |
84a63795 WD |
553 | else |
554 | s = strdup(s); | |
087bf010 | 555 | |
5cb37436 | 556 | memset(&globbuf, 0, sizeof globbuf); |
7842418b | 557 | if (!filter_server_path(s)) |
4791825d | 558 | glob(s, 0, NULL, &globbuf); |
b7061c82 WD |
559 | if (MAX((int)globbuf.gl_pathc, 1) > maxargs - argc) { |
560 | maxargs += globbuf.gl_pathc + MAX_ARGS; | |
561 | if (!(argv = realloc_array(argv, char *, maxargs))) | |
562 | out_of_memory("glob_expand_one"); | |
563 | *argv_ptr = argv; | |
564 | *maxargs_ptr = maxargs; | |
565 | } | |
b5bd5542 WD |
566 | if (globbuf.gl_pathc == 0) |
567 | argv[argc++] = s; | |
568 | else { | |
c8933031 | 569 | int i; |
b5bd5542 | 570 | free(s); |
c8933031 | 571 | for (i = 0; i < (int)globbuf.gl_pathc; i++) { |
b5bd5542 WD |
572 | if (!(argv[argc++] = strdup(globbuf.gl_pathv[i]))) |
573 | out_of_memory("glob_expand_one"); | |
574 | } | |
874895d5 AT |
575 | } |
576 | globfree(&globbuf); | |
874895d5 | 577 | #endif |
b5bd5542 | 578 | *argc_ptr = argc; |
874895d5 | 579 | } |
5a96ee05 | 580 | |
4791825d | 581 | /* This routine is only used in daemon mode. */ |
b7061c82 | 582 | void glob_expand(char *base1, char ***argv_ptr, int *argc_ptr, int *maxargs_ptr) |
087bf010 | 583 | { |
b7061c82 | 584 | char *s = (*argv_ptr)[*argc_ptr]; |
087bf010 | 585 | char *p, *q; |
ba5e128d | 586 | char *base = base1; |
4791825d | 587 | int base_len = strlen(base); |
087bf010 | 588 | |
b5bd5542 WD |
589 | if (!s || !*s) |
590 | return; | |
087bf010 | 591 | |
4791825d WD |
592 | if (strncmp(s, base, base_len) == 0) |
593 | s += base_len; | |
e42c9458 | 594 | |
b5bd5542 WD |
595 | if (!(s = strdup(s))) |
596 | out_of_memory("glob_expand"); | |
087bf010 | 597 | |
b5bd5542 WD |
598 | if (asprintf(&base," %s/", base1) <= 0) |
599 | out_of_memory("glob_expand"); | |
4791825d | 600 | base_len++; |
ba5e128d | 601 | |
b5bd5542 WD |
602 | for (q = s; *q; q = p + base_len) { |
603 | if ((p = strstr(q, base)) != NULL) | |
604 | *p = '\0'; /* split it at this point */ | |
b7061c82 | 605 | glob_expand_one(q, argv_ptr, argc_ptr, maxargs_ptr); |
b5bd5542 WD |
606 | if (!p) |
607 | break; | |
087bf010 AT |
608 | } |
609 | ||
087bf010 | 610 | free(s); |
ba5e128d | 611 | free(base); |
087bf010 | 612 | } |
5a96ee05 | 613 | |
ac13ad10 MP |
614 | /** |
615 | * Convert a string to lower case | |
616 | **/ | |
5a96ee05 AT |
617 | void strlower(char *s) |
618 | { | |
619 | while (*s) { | |
b5bd5542 WD |
620 | if (isupper(*(unsigned char *)s)) |
621 | *s = tolower(*(unsigned char *)s); | |
5a96ee05 AT |
622 | s++; |
623 | } | |
624 | } | |
e42c9458 | 625 | |
368ad70e WD |
626 | /* Join strings p1 & p2 into "dest" with a guaranteed '/' between them. (If |
627 | * p1 ends with a '/', no extra '/' is inserted.) Returns the length of both | |
a8f7e4b8 WD |
628 | * strings + 1 (if '/' was inserted), regardless of whether the null-terminated |
629 | * string fits into destsize. */ | |
368ad70e WD |
630 | size_t pathjoin(char *dest, size_t destsize, const char *p1, const char *p2) |
631 | { | |
632 | size_t len = strlcpy(dest, p1, destsize); | |
633 | if (len < destsize - 1) { | |
634 | if (!len || dest[len-1] != '/') | |
635 | dest[len++] = '/'; | |
636 | if (len < destsize - 1) | |
637 | len += strlcpy(dest + len, p2, destsize - len); | |
638 | else { | |
639 | dest[len] = '\0'; | |
640 | len += strlen(p2); | |
641 | } | |
642 | } | |
643 | else | |
644 | len += strlen(p2) + 1; /* Assume we'd insert a '/'. */ | |
645 | return len; | |
646 | } | |
647 | ||
648 | /* Join any number of strings together, putting them in "dest". The return | |
a8f7e4b8 WD |
649 | * value is the length of all the strings, regardless of whether the null- |
650 | * terminated whole fits in destsize. Your list of string pointers must end | |
651 | * with a NULL to indicate the end of the list. */ | |
368ad70e WD |
652 | size_t stringjoin(char *dest, size_t destsize, ...) |
653 | { | |
5cb37436 | 654 | va_list ap; |
368ad70e WD |
655 | size_t len, ret = 0; |
656 | const char *src; | |
657 | ||
658 | va_start(ap, destsize); | |
659 | while (1) { | |
660 | if (!(src = va_arg(ap, const char *))) | |
661 | break; | |
662 | len = strlen(src); | |
663 | ret += len; | |
664 | if (destsize > 1) { | |
665 | if (len >= destsize) | |
666 | len = destsize - 1; | |
667 | memcpy(dest, src, len); | |
668 | destsize -= len; | |
669 | dest += len; | |
670 | } | |
671 | } | |
672 | *dest = '\0'; | |
673 | va_end(ap); | |
674 | ||
675 | return ret; | |
676 | } | |
677 | ||
1d6b8f9a WD |
678 | int count_dir_elements(const char *p) |
679 | { | |
680 | int cnt = 0, new_component = 1; | |
681 | while (*p) { | |
682 | if (*p++ == '/') | |
683 | new_component = 1; | |
684 | else if (new_component) { | |
685 | new_component = 0; | |
686 | cnt++; | |
687 | } | |
688 | } | |
689 | return cnt; | |
690 | } | |
691 | ||
b92693da WD |
692 | /* Turns multiple adjacent slashes into a single slash, gets rid of "./" |
693 | * elements (but not a trailing dot dir), removes a trailing slash, and | |
694 | * optionally collapses ".." elements (except for those at the start of the | |
695 | * string). If the resulting name would be empty, change it into a ".". */ | |
696 | unsigned int clean_fname(char *name, BOOL collapse_dot_dot) | |
5243c216 | 697 | { |
e012b94f | 698 | char *limit = name - 1, *t = name, *f = name; |
ebdd24d6 | 699 | int anchored; |
5243c216 | 700 | |
b5bd5542 | 701 | if (!name) |
3104620c | 702 | return 0; |
5243c216 | 703 | |
ebdd24d6 WD |
704 | if ((anchored = *f == '/') != 0) |
705 | *t++ = *f++; | |
706 | while (*f) { | |
707 | /* discard extra slashes */ | |
708 | if (*f == '/') { | |
709 | f++; | |
710 | continue; | |
5243c216 | 711 | } |
ebdd24d6 WD |
712 | if (*f == '.') { |
713 | /* discard "." dirs (but NOT a trailing '.'!) */ | |
714 | if (f[1] == '/') { | |
e012b94f | 715 | f += 2; |
ebdd24d6 WD |
716 | continue; |
717 | } | |
718 | /* collapse ".." dirs */ | |
b92693da WD |
719 | if (collapse_dot_dot |
720 | && f[1] == '.' && (f[2] == '/' || !f[2])) { | |
ebdd24d6 WD |
721 | char *s = t - 1; |
722 | if (s == name && anchored) { | |
723 | f += 2; | |
724 | continue; | |
725 | } | |
726 | while (s > limit && *--s != '/') {} | |
e012b94f | 727 | if (s != t - 1 && (s < name || *s == '/')) { |
ebdd24d6 WD |
728 | t = s + 1; |
729 | f += 2; | |
730 | continue; | |
731 | } | |
f55c2dfc | 732 | limit = t + 2; |
5243c216 AT |
733 | } |
734 | } | |
ebdd24d6 | 735 | while (*f && (*t++ = *f++) != '/') {} |
5243c216 | 736 | } |
ebdd24d6 WD |
737 | |
738 | if (t > name+anchored && t[-1] == '/') | |
739 | t--; | |
740 | if (t == name) | |
741 | *t++ = '.'; | |
742 | *t = '\0'; | |
3104620c WD |
743 | |
744 | return t - name; | |
5243c216 AT |
745 | } |
746 | ||
84a63795 WD |
747 | /* Make path appear as if a chroot had occurred. This handles a leading |
748 | * "/" (either removing it or expanding it) and any leading or embedded | |
749 | * ".." components that attempt to escape past the module's top dir. | |
b4235b31 | 750 | * |
1d6b8f9a WD |
751 | * If dest is NULL, a buffer is allocated to hold the result. It is legal |
752 | * to call with the dest and the path (p) pointing to the same buffer, but | |
753 | * rootdir will be ignored to avoid expansion of the string. | |
b4235b31 | 754 | * |
1d6b8f9a WD |
755 | * The rootdir string contains a value to use in place of a leading slash. |
756 | * Specify NULL to get the default of lp_path(module_id). | |
ac13ad10 | 757 | * |
5886edfa WD |
758 | * If depth is >= 0, it is a count of how many '..'s to allow at the start |
759 | * of the path. Use -1 to allow unlimited depth. | |
ac13ad10 | 760 | * |
b92693da WD |
761 | * We also clean the path in a manner similar to clean_fname() but with a |
762 | * few differences: | |
763 | * | |
764 | * Turns multiple adjacent slashes into a single slash, gets rid of "." dir | |
765 | * elements (INCLUDING a trailing dot dir), PRESERVES a trailing slash, and | |
766 | * ALWAYS collapses ".." elements (except for those at the start of the | |
767 | * string up to "depth" deep). If the resulting name would be empty, | |
768 | * change it into a ".". */ | |
1d6b8f9a | 769 | char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth) |
1b8e662a | 770 | { |
44e2e578 | 771 | char *start, *sanp; |
7e43da81 | 772 | int rlen = 0, leave_one_dotdir = relative_paths; |
84a63795 WD |
773 | |
774 | if (dest != p) { | |
775 | int plen = strlen(p); | |
1d6b8f9a WD |
776 | if (*p == '/') { |
777 | if (!rootdir) | |
778 | rootdir = lp_path(module_id); | |
779 | rlen = strlen(rootdir); | |
780 | depth = 0; | |
84a63795 WD |
781 | p++; |
782 | } | |
783 | if (dest) { | |
784 | if (rlen + plen + 1 >= MAXPATHLEN) | |
785 | return NULL; | |
786 | } else if (!(dest = new_array(char, rlen + plen + 1))) | |
787 | out_of_memory("sanitize_path"); | |
788 | if (rlen) { | |
1d6b8f9a | 789 | memcpy(dest, rootdir, rlen); |
84a63795 WD |
790 | if (rlen > 1) |
791 | dest[rlen++] = '/'; | |
792 | } | |
793 | } | |
cb13abfe | 794 | |
84a63795 | 795 | start = sanp = dest + rlen; |
1b8e662a | 796 | while (*p != '\0') { |
2d41264e WD |
797 | /* discard leading or extra slashes */ |
798 | if (*p == '/') { | |
799 | p++; | |
800 | continue; | |
801 | } | |
b5f9e67d | 802 | /* this loop iterates once per filename component in p. |
44e2e578 | 803 | * both p (and sanp if the original had a slash) should |
b5f9e67d DD |
804 | * always be left pointing after a slash |
805 | */ | |
c284f34a | 806 | if (*p == '.' && (p[1] == '/' || p[1] == '\0')) { |
35812ea1 | 807 | if (leave_one_dotdir && p[1]) |
7e43da81 WD |
808 | leave_one_dotdir = 0; |
809 | else { | |
810 | /* skip "." component */ | |
811 | p++; | |
812 | continue; | |
813 | } | |
cb13abfe | 814 | } |
c284f34a | 815 | if (*p == '.' && p[1] == '.' && (p[2] == '/' || p[2] == '\0')) { |
cb13abfe | 816 | /* ".." component followed by slash or end */ |
8e5f029e WD |
817 | if (depth <= 0 || sanp != start) { |
818 | p += 2; | |
819 | if (sanp != start) { | |
820 | /* back up sanp one level */ | |
821 | --sanp; /* now pointing at slash */ | |
822 | while (sanp > start && sanp[-1] != '/') { | |
823 | /* skip back up to slash */ | |
824 | sanp--; | |
825 | } | |
b5f9e67d | 826 | } |
8e5f029e | 827 | continue; |
1b8e662a | 828 | } |
8e5f029e WD |
829 | /* allow depth levels of .. at the beginning */ |
830 | depth--; | |
831 | /* move the virtual beginning to leave the .. alone */ | |
832 | start = sanp + 3; | |
1b8e662a | 833 | } |
2d41264e WD |
834 | /* copy one component through next slash */ |
835 | while (*p && (*sanp++ = *p++) != '/') {} | |
1b8e662a | 836 | } |
84a63795 | 837 | if (sanp == dest) { |
b5f9e67d | 838 | /* ended up with nothing, so put in "." component */ |
44e2e578 | 839 | *sanp++ = '.'; |
b5f9e67d | 840 | } |
44e2e578 | 841 | *sanp = '\0'; |
1b8e662a | 842 | |
84a63795 | 843 | return dest; |
14b61c63 | 844 | } |
5243c216 | 845 | |
4791825d | 846 | char curr_dir[MAXPATHLEN]; |
4af8fe4e | 847 | unsigned int curr_dir_len; |
5243c216 | 848 | |
4e5db0ad | 849 | /** |
a16d8f2b WD |
850 | * Like chdir(), but it keeps track of the current directory (in the |
851 | * global "curr_dir"), and ensures that the path size doesn't overflow. | |
852 | * Also cleans the path using the clean_fname() function. | |
4e5db0ad | 853 | **/ |
4af8fe4e | 854 | int push_dir(char *dir) |
5243c216 | 855 | { |
5243c216 | 856 | static int initialised; |
4af8fe4e | 857 | unsigned int len; |
5243c216 AT |
858 | |
859 | if (!initialised) { | |
860 | initialised = 1; | |
5cb37436 | 861 | getcwd(curr_dir, sizeof curr_dir - 1); |
4af8fe4e | 862 | curr_dir_len = strlen(curr_dir); |
5243c216 AT |
863 | } |
864 | ||
4af8fe4e WD |
865 | if (!dir) /* this call was probably just to initialize */ |
866 | return 0; | |
c226b7c2 | 867 | |
4af8fe4e WD |
868 | len = strlen(dir); |
869 | if (len == 1 && *dir == '.') | |
870 | return 1; | |
5243c216 | 871 | |
4af8fe4e WD |
872 | if ((*dir == '/' ? len : curr_dir_len + 1 + len) >= sizeof curr_dir) |
873 | return 0; | |
874 | ||
875 | if (chdir(dir)) | |
876 | return 0; | |
5243c216 AT |
877 | |
878 | if (*dir == '/') { | |
4af8fe4e WD |
879 | memcpy(curr_dir, dir, len + 1); |
880 | curr_dir_len = len; | |
881 | } else { | |
882 | curr_dir[curr_dir_len++] = '/'; | |
883 | memcpy(curr_dir + curr_dir_len, dir, len + 1); | |
884 | curr_dir_len += len; | |
5243c216 AT |
885 | } |
886 | ||
b92693da | 887 | curr_dir_len = clean_fname(curr_dir, 1); |
5243c216 | 888 | |
4af8fe4e | 889 | return 1; |
5243c216 AT |
890 | } |
891 | ||
a16d8f2b WD |
892 | /** |
893 | * Reverse a push_dir() call. You must pass in an absolute path | |
894 | * that was copied from a prior value of "curr_dir". | |
895 | **/ | |
5243c216 AT |
896 | int pop_dir(char *dir) |
897 | { | |
4af8fe4e WD |
898 | if (chdir(dir)) |
899 | return 0; | |
5243c216 | 900 | |
4af8fe4e WD |
901 | curr_dir_len = strlcpy(curr_dir, dir, sizeof curr_dir); |
902 | if (curr_dir_len >= sizeof curr_dir) | |
903 | curr_dir_len = sizeof curr_dir - 1; | |
5243c216 | 904 | |
4af8fe4e | 905 | return 1; |
5243c216 | 906 | } |
aa9b77a5 | 907 | |
eb61be19 WD |
908 | /** |
909 | * Return a quoted string with the full pathname of the indicated filename. | |
910 | * The string " (in MODNAME)" may also be appended. The returned pointer | |
911 | * remains valid until the next time full_fname() is called. | |
912 | **/ | |
9a5ade18 | 913 | char *full_fname(const char *fn) |
eb61be19 | 914 | { |
eb61be19 WD |
915 | static char *result = NULL; |
916 | char *m1, *m2, *m3; | |
917 | char *p1, *p2; | |
918 | ||
919 | if (result) | |
920 | free(result); | |
921 | ||
922 | if (*fn == '/') | |
923 | p1 = p2 = ""; | |
924 | else { | |
925 | p1 = curr_dir; | |
bc83274a WD |
926 | for (p2 = p1; *p2 == '/'; p2++) {} |
927 | if (*p2) | |
928 | p2 = "/"; | |
eb61be19 WD |
929 | } |
930 | if (module_id >= 0) { | |
931 | m1 = " (in "; | |
932 | m2 = lp_name(module_id); | |
933 | m3 = ")"; | |
bc83274a | 934 | if (p1 == curr_dir) { |
eb61be19 WD |
935 | if (!lp_use_chroot(module_id)) { |
936 | char *p = lp_path(module_id); | |
937 | if (*p != '/' || p[1]) | |
938 | p1 += strlen(p); | |
939 | } | |
eb61be19 | 940 | } |
eb61be19 WD |
941 | } else |
942 | m1 = m2 = m3 = ""; | |
943 | ||
944 | asprintf(&result, "\"%s%s%s\"%s%s%s", p1, p2, fn, m1, m2, m3); | |
945 | ||
946 | return result; | |
947 | } | |
948 | ||
a7260c40 WD |
949 | static char partial_fname[MAXPATHLEN]; |
950 | ||
951 | char *partial_dir_fname(const char *fname) | |
952 | { | |
953 | char *t = partial_fname; | |
954 | int sz = sizeof partial_fname; | |
955 | const char *fn; | |
956 | ||
957 | if ((fn = strrchr(fname, '/')) != NULL) { | |
958 | fn++; | |
959 | if (*partial_dir != '/') { | |
960 | int len = fn - fname; | |
961 | strncpy(t, fname, len); /* safe */ | |
962 | t += len; | |
963 | sz -= len; | |
964 | } | |
965 | } else | |
966 | fn = fname; | |
967 | if ((int)pathjoin(t, sz, partial_dir, fn) >= sz) | |
968 | return NULL; | |
5aa7b20a WD |
969 | if (server_filter_list.head) { |
970 | static int len; | |
971 | if (!len) | |
972 | len = strlen(partial_dir); | |
973 | t[len] = '\0'; | |
974 | if (check_filter(&server_filter_list, partial_fname, 1) < 0) | |
975 | return NULL; | |
976 | t[len] = '/'; | |
977 | if (check_filter(&server_filter_list, partial_fname, 0) < 0) | |
978 | return NULL; | |
979 | } | |
a7260c40 WD |
980 | |
981 | return partial_fname; | |
982 | } | |
983 | ||
984 | /* If no --partial-dir option was specified, we don't need to do anything | |
985 | * (the partial-dir is essentially '.'), so just return success. */ | |
986 | int handle_partial_dir(const char *fname, int create) | |
987 | { | |
988 | char *fn, *dir; | |
989 | ||
990 | if (fname != partial_fname) | |
991 | return 1; | |
992 | if (!create && *partial_dir == '/') | |
993 | return 1; | |
994 | if (!(fn = strrchr(partial_fname, '/'))) | |
995 | return 1; | |
996 | ||
997 | *fn = '\0'; | |
998 | dir = partial_fname; | |
999 | if (create) { | |
1000 | STRUCT_STAT st; | |
a7260c40 | 1001 | int statret = do_lstat(dir, &st); |
a7260c40 WD |
1002 | if (statret == 0 && !S_ISDIR(st.st_mode)) { |
1003 | if (do_unlink(dir) < 0) | |
1004 | return 0; | |
1005 | statret = -1; | |
1006 | } | |
1007 | if (statret < 0 && do_mkdir(dir, 0700) < 0) | |
1008 | return 0; | |
1009 | } else | |
1010 | do_rmdir(dir); | |
1011 | *fn = '/'; | |
1012 | ||
1013 | return 1; | |
1014 | } | |
1015 | ||
ac13ad10 MP |
1016 | /** |
1017 | * Determine if a symlink points outside the current directory tree. | |
036e70b0 MP |
1018 | * This is considered "unsafe" because e.g. when mirroring somebody |
1019 | * else's machine it might allow them to establish a symlink to | |
1020 | * /etc/passwd, and then read it through a web server. | |
1021 | * | |
4e5db0ad MP |
1022 | * Null symlinks and absolute symlinks are always unsafe. |
1023 | * | |
1024 | * Basically here we are concerned with symlinks whose target contains | |
1025 | * "..", because this might cause us to walk back up out of the | |
1026 | * transferred directory. We are not allowed to go back up and | |
1027 | * reenter. | |
1028 | * | |
036e70b0 MP |
1029 | * @param dest Target of the symlink in question. |
1030 | * | |
25d34a5c | 1031 | * @param src Top source directory currently applicable. Basically this |
036e70b0 | 1032 | * is the first parameter to rsync in a simple invocation, but it's |
25d34a5c | 1033 | * modified by flist.c in slightly complex ways. |
036e70b0 MP |
1034 | * |
1035 | * @retval True if unsafe | |
1036 | * @retval False is unsafe | |
4e5db0ad MP |
1037 | * |
1038 | * @sa t_unsafe.c | |
ac13ad10 | 1039 | **/ |
7afa3a4a | 1040 | int unsafe_symlink(const char *dest, const char *src) |
4b957c22 | 1041 | { |
7afa3a4a | 1042 | const char *name, *slash; |
4b957c22 AT |
1043 | int depth = 0; |
1044 | ||
1045 | /* all absolute and null symlinks are unsafe */ | |
b5bd5542 WD |
1046 | if (!dest || !*dest || *dest == '/') |
1047 | return 1; | |
4b957c22 AT |
1048 | |
1049 | /* find out what our safety margin is */ | |
7afa3a4a WD |
1050 | for (name = src; (slash = strchr(name, '/')) != 0; name = slash+1) { |
1051 | if (strncmp(name, "../", 3) == 0) { | |
c284f34a | 1052 | depth = 0; |
7afa3a4a | 1053 | } else if (strncmp(name, "./", 2) == 0) { |
4b957c22 AT |
1054 | /* nothing */ |
1055 | } else { | |
1056 | depth++; | |
1057 | } | |
1058 | } | |
7afa3a4a WD |
1059 | if (strcmp(name, "..") == 0) |
1060 | depth = 0; | |
4b957c22 | 1061 | |
7afa3a4a WD |
1062 | for (name = dest; (slash = strchr(name, '/')) != 0; name = slash+1) { |
1063 | if (strncmp(name, "../", 3) == 0) { | |
1064 | /* if at any point we go outside the current directory | |
1065 | then stop - it is unsafe */ | |
1066 | if (--depth < 0) | |
1067 | return 1; | |
1068 | } else if (strncmp(name, "./", 2) == 0) { | |
4b957c22 AT |
1069 | /* nothing */ |
1070 | } else { | |
1071 | depth++; | |
1072 | } | |
4b957c22 | 1073 | } |
7afa3a4a WD |
1074 | if (strcmp(name, "..") == 0) |
1075 | depth--; | |
4b957c22 | 1076 | |
4b957c22 AT |
1077 | return (depth < 0); |
1078 | } | |
375a4556 | 1079 | |
e175fb07 WD |
1080 | /* Return the int64 number as a string. If the --human-readable option was |
1081 | * specified, we may output the number in K, M, or G units. We can return | |
1082 | * up to 4 buffers at a time. */ | |
1083 | char *human_num(int64 num) | |
1084 | { | |
1085 | static char bufs[4][128]; /* more than enough room */ | |
1086 | static unsigned int n; | |
1087 | char *s; | |
1088 | ||
1089 | n = (n + 1) % (sizeof bufs / sizeof bufs[0]); | |
1090 | ||
1091 | if (human_readable) { | |
1092 | char units = '\0'; | |
7794db7c | 1093 | int mult = human_readable == 1 ? 1000 : 1024; |
e175fb07 WD |
1094 | double dnum = 0; |
1095 | if (num > mult*mult*mult) { | |
1096 | dnum = (double)num / (mult*mult*mult); | |
1097 | units = 'G'; | |
1098 | } else if (num > mult*mult) { | |
1099 | dnum = (double)num / (mult*mult); | |
1100 | units = 'M'; | |
1101 | } else if (num > mult) { | |
1102 | dnum = (double)num / mult; | |
1103 | units = 'K'; | |
1104 | } | |
1105 | if (units) { | |
1106 | sprintf(bufs[n], "%.2f%c", dnum, units); | |
1107 | return bufs[n]; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | s = bufs[n] + sizeof bufs[0] - 1; | |
1112 | *s = '\0'; | |
1113 | ||
1114 | if (!num) | |
1115 | *--s = '0'; | |
1116 | while (num) { | |
1117 | *--s = (num % 10) + '0'; | |
1118 | num /= 10; | |
1119 | } | |
1120 | return s; | |
1121 | } | |
1122 | ||
1123 | /* Return the double number as a string. If the --human-readable option was | |
1124 | * specified, we may output the number in K, M, or G units. We use a buffer | |
1125 | * from human_num() to return our result. */ | |
1126 | char *human_dnum(double dnum, int decimal_digits) | |
1127 | { | |
1128 | char *buf = human_num(dnum); | |
1129 | int len = strlen(buf); | |
1130 | if (isdigit(*(uchar*)(buf+len-1))) { | |
1131 | /* There's extra room in buf prior to the start of the num. */ | |
1132 | buf -= decimal_digits + 1; | |
1133 | snprintf(buf, len + decimal_digits + 2, "%.*f", decimal_digits, dnum); | |
1134 | } | |
1135 | return buf; | |
1136 | } | |
f7632fc6 | 1137 | |
ac13ad10 | 1138 | /** |
b4235b31 MP |
1139 | * Return the date and time as a string |
1140 | **/ | |
f7632fc6 AT |
1141 | char *timestring(time_t t) |
1142 | { | |
1143 | static char TimeBuf[200]; | |
1144 | struct tm *tm = localtime(&t); | |
afa73c75 | 1145 | char *p; |
f7632fc6 | 1146 | |
4f5b0756 | 1147 | #ifdef HAVE_STRFTIME |
5cb37436 | 1148 | strftime(TimeBuf, sizeof TimeBuf - 1, "%Y/%m/%d %H:%M:%S", tm); |
f7632fc6 | 1149 | #else |
5cb37436 | 1150 | strlcpy(TimeBuf, asctime(tm), sizeof TimeBuf); |
f7632fc6 AT |
1151 | #endif |
1152 | ||
afa73c75 WD |
1153 | if ((p = strchr(TimeBuf, '\n')) != NULL) |
1154 | *p = '\0'; | |
f7632fc6 | 1155 | |
afa73c75 | 1156 | return TimeBuf; |
f7632fc6 AT |
1157 | } |
1158 | ||
e1bd49d6 MP |
1159 | /** |
1160 | * Sleep for a specified number of milliseconds. | |
1161 | * | |
1162 | * Always returns TRUE. (In the future it might return FALSE if | |
1163 | * interrupted.) | |
1164 | **/ | |
1165 | int msleep(int t) | |
9ec16c83 | 1166 | { |
c284f34a WD |
1167 | int tdiff = 0; |
1168 | struct timeval tval, t1, t2; | |
9ec16c83 AT |
1169 | |
1170 | gettimeofday(&t1, NULL); | |
5cb37436 | 1171 | |
9ec16c83 AT |
1172 | while (tdiff < t) { |
1173 | tval.tv_sec = (t-tdiff)/1000; | |
1174 | tval.tv_usec = 1000*((t-tdiff)%1000); | |
5cb37436 | 1175 | |
9ec16c83 AT |
1176 | errno = 0; |
1177 | select(0,NULL,NULL, NULL, &tval); | |
1178 | ||
1179 | gettimeofday(&t2, NULL); | |
5cb37436 | 1180 | tdiff = (t2.tv_sec - t1.tv_sec)*1000 + |
9ec16c83 AT |
1181 | (t2.tv_usec - t1.tv_usec)/1000; |
1182 | } | |
e1bd49d6 MP |
1183 | |
1184 | return True; | |
9ec16c83 AT |
1185 | } |
1186 | ||
c2b54076 WD |
1187 | /* Determine if two time_t values are equivalent (either exact, or in |
1188 | * the modification timestamp window established by --modify-window). | |
ac13ad10 MP |
1189 | * |
1190 | * @retval 0 if the times should be treated as the same | |
1191 | * | |
1192 | * @retval +1 if the first is later | |
1193 | * | |
1194 | * @retval -1 if the 2nd is later | |
1195 | **/ | |
c2b54076 | 1196 | int cmp_time(time_t file1, time_t file2) |
5b56cc19 | 1197 | { |
5b56cc19 | 1198 | if (file2 > file1) { |
bc6ebcd2 WD |
1199 | if (file2 - file1 <= modify_window) |
1200 | return 0; | |
5b56cc19 AT |
1201 | return -1; |
1202 | } | |
bc6ebcd2 WD |
1203 | if (file1 - file2 <= modify_window) |
1204 | return 0; | |
5b56cc19 AT |
1205 | return 1; |
1206 | } | |
1207 | ||
1208 | ||
1209 | #ifdef __INSURE__XX | |
0f8f98c8 AT |
1210 | #include <dlfcn.h> |
1211 | ||
ac13ad10 MP |
1212 | /** |
1213 | This routine is a trick to immediately catch errors when debugging | |
1214 | with insure. A xterm with a gdb is popped up when insure catches | |
1215 | a error. It is Linux specific. | |
1216 | **/ | |
0f8f98c8 AT |
1217 | int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6) |
1218 | { | |
1219 | static int (*fn)(); | |
1220 | int ret; | |
8950ac03 | 1221 | char *cmd; |
0f8f98c8 | 1222 | |
5cb37436 | 1223 | 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 |
1224 | getpid(), getpid(), getpid()); |
1225 | ||
1226 | if (!fn) { | |
1227 | static void *h; | |
1228 | h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY); | |
1229 | fn = dlsym(h, "_Insure_trap_error"); | |
1230 | } | |
1231 | ||
1232 | ret = fn(a1, a2, a3, a4, a5, a6); | |
1233 | ||
1234 | system(cmd); | |
1235 | ||
8950ac03 AT |
1236 | free(cmd); |
1237 | ||
0f8f98c8 AT |
1238 | return ret; |
1239 | } | |
1240 | #endif | |
58cadc86 | 1241 | |
58cadc86 WD |
1242 | #define MALLOC_MAX 0x40000000 |
1243 | ||
1244 | void *_new_array(unsigned int size, unsigned long num) | |
1245 | { | |
1246 | if (num >= MALLOC_MAX/size) | |
1247 | return NULL; | |
1248 | return malloc(size * num); | |
1249 | } | |
1250 | ||
1251 | void *_realloc_array(void *ptr, unsigned int size, unsigned long num) | |
1252 | { | |
1253 | if (num >= MALLOC_MAX/size) | |
1254 | return NULL; | |
1255 | /* No realloc should need this, but just in case... */ | |
1256 | if (!ptr) | |
1257 | return malloc(size * num); | |
1258 | return realloc(ptr, size * num); | |
1259 | } | |
e64ae6d7 WD |
1260 | |
1261 | /* Take a filename and filename length and return the most significant | |
1262 | * filename suffix we can find. This ignores suffixes such as "~", | |
1263 | * ".bak", ".orig", ".~1~", etc. */ | |
1264 | const char *find_filename_suffix(const char *fn, int fn_len, int *len_ptr) | |
1265 | { | |
1266 | const char *suf, *s; | |
1267 | BOOL had_tilde; | |
1268 | int s_len; | |
1269 | ||
1270 | /* One or more dots at the start aren't a suffix. */ | |
1271 | while (fn_len && *fn == '.') fn++, fn_len--; | |
1272 | ||
1273 | /* Ignore the ~ in a "foo~" filename. */ | |
1274 | if (fn_len > 1 && fn[fn_len-1] == '~') | |
1275 | fn_len--, had_tilde = True; | |
1276 | else | |
1277 | had_tilde = False; | |
1278 | ||
1279 | /* Assume we don't find an suffix. */ | |
1280 | suf = ""; | |
1281 | *len_ptr = 0; | |
1282 | ||
1283 | /* Find the last significant suffix. */ | |
1284 | for (s = fn + fn_len; fn_len > 1; ) { | |
1285 | while (*--s != '.' && s != fn) {} | |
1286 | if (s == fn) | |
1287 | break; | |
1288 | s_len = fn_len - (s - fn); | |
1289 | fn_len = s - fn; | |
6012eaa1 | 1290 | if (s_len == 4) { |
e64ae6d7 WD |
1291 | if (strcmp(s+1, "bak") == 0 |
1292 | || strcmp(s+1, "old") == 0) | |
1293 | continue; | |
6012eaa1 | 1294 | } else if (s_len == 5) { |
e64ae6d7 WD |
1295 | if (strcmp(s+1, "orig") == 0) |
1296 | continue; | |
1297 | } else if (s_len > 2 && had_tilde | |
73253721 | 1298 | && s[1] == '~' && isdigit(*(uchar*)(s+2))) |
e64ae6d7 WD |
1299 | continue; |
1300 | *len_ptr = s_len; | |
1301 | suf = s; | |
1302 | if (s_len == 1) | |
1303 | break; | |
1304 | /* Determine if the suffix is all digits. */ | |
1305 | for (s++, s_len--; s_len > 0; s++, s_len--) { | |
73253721 | 1306 | if (!isdigit(*(uchar*)s)) |
e64ae6d7 WD |
1307 | return suf; |
1308 | } | |
1309 | /* An all-digit suffix may not be that signficant. */ | |
1310 | s = suf; | |
1311 | } | |
1312 | ||
1313 | return suf; | |
1314 | } | |
1315 | ||
1316 | /* This is an implementation of the Levenshtein distance algorithm. It | |
1317 | * was implemented to avoid needing a two-dimensional matrix (to save | |
1318 | * memory). It was also tweaked to try to factor in the ASCII distance | |
1319 | * between changed characters as a minor distance quantity. The normal | |
1320 | * Levenshtein units of distance (each signifying a single change between | |
1321 | * the two strings) are defined as a "UNIT". */ | |
1322 | ||
1323 | #define UNIT (1 << 16) | |
1324 | ||
1325 | uint32 fuzzy_distance(const char *s1, int len1, const char *s2, int len2) | |
1326 | { | |
1327 | uint32 a[MAXPATHLEN], diag, above, left, diag_inc, above_inc, left_inc; | |
1328 | int32 cost; | |
1329 | int i1, i2; | |
1330 | ||
1331 | if (!len1 || !len2) { | |
1332 | if (!len1) { | |
1333 | s1 = s2; | |
1334 | len1 = len2; | |
1335 | } | |
1336 | for (i1 = 0, cost = 0; i1 < len1; i1++) | |
1337 | cost += s1[i1]; | |
1338 | return (int32)len1 * UNIT + cost; | |
1339 | } | |
1340 | ||
1341 | for (i2 = 0; i2 < len2; i2++) | |
1342 | a[i2] = (i2+1) * UNIT; | |
1343 | ||
1344 | for (i1 = 0; i1 < len1; i1++) { | |
1345 | diag = i1 * UNIT; | |
1346 | above = (i1+1) * UNIT; | |
1347 | for (i2 = 0; i2 < len2; i2++) { | |
1348 | left = a[i2]; | |
1349 | if ((cost = *((uchar*)s1+i1) - *((uchar*)s2+i2)) != 0) { | |
1350 | if (cost < 0) | |
1351 | cost = UNIT - cost; | |
1352 | else | |
1353 | cost = UNIT + cost; | |
1354 | } | |
1355 | diag_inc = diag + cost; | |
1356 | left_inc = left + UNIT + *((uchar*)s1+i1); | |
1357 | above_inc = above + UNIT + *((uchar*)s2+i2); | |
1358 | a[i2] = above = left < above | |
1359 | ? (left_inc < diag_inc ? left_inc : diag_inc) | |
1360 | : (above_inc < diag_inc ? above_inc : diag_inc); | |
1361 | diag = left; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | return a[len2-1]; | |
1366 | } | |
c2b54076 WD |
1367 | |
1368 | #define BB_SLOT_SIZE (16*1024) /* Desired size in bytes */ | |
1369 | #define BB_PER_SLOT_BITS (BB_SLOT_SIZE * 8) /* Number of bits per slot */ | |
1370 | #define BB_PER_SLOT_INTS (BB_SLOT_SIZE / 4) /* Number of int32s per slot */ | |
1371 | ||
1372 | struct bitbag { | |
1373 | uint32 **bits; | |
1374 | int slot_cnt; | |
1375 | }; | |
1376 | ||
1377 | struct bitbag *bitbag_create(int max_ndx) | |
1378 | { | |
1379 | struct bitbag *bb = new(struct bitbag); | |
1380 | bb->slot_cnt = (max_ndx + BB_PER_SLOT_BITS - 1) / BB_PER_SLOT_BITS; | |
1381 | ||
1382 | if (!(bb->bits = (uint32**)calloc(bb->slot_cnt, sizeof (uint32*)))) | |
1383 | out_of_memory("bitbag_create"); | |
1384 | ||
1385 | return bb; | |
1386 | } | |
1387 | ||
1388 | void bitbag_set_bit(struct bitbag *bb, int ndx) | |
1389 | { | |
1390 | int slot = ndx / BB_PER_SLOT_BITS; | |
1391 | ndx %= BB_PER_SLOT_BITS; | |
1392 | ||
1393 | if (!bb->bits[slot]) { | |
1394 | if (!(bb->bits[slot] = (uint32*)calloc(BB_PER_SLOT_INTS, 4))) | |
1395 | out_of_memory("bitbag_set_bit"); | |
1396 | } | |
1397 | ||
1398 | bb->bits[slot][ndx/32] |= 1u << (ndx % 32); | |
1399 | } | |
1400 | ||
1401 | #if 0 /* not needed yet */ | |
1402 | void bitbag_clear_bit(struct bitbag *bb, int ndx) | |
1403 | { | |
1404 | int slot = ndx / BB_PER_SLOT_BITS; | |
1405 | ndx %= BB_PER_SLOT_BITS; | |
1406 | ||
1407 | if (!bb->bits[slot]) | |
1408 | return; | |
1409 | ||
1410 | bb->bits[slot][ndx/32] &= ~(1u << (ndx % 32)); | |
1411 | } | |
1412 | ||
1413 | int bitbag_check_bit(struct bitbag *bb, int ndx) | |
1414 | { | |
1415 | int slot = ndx / BB_PER_SLOT_BITS; | |
1416 | ndx %= BB_PER_SLOT_BITS; | |
1417 | ||
1418 | if (!bb->bits[slot]) | |
1419 | return 0; | |
1420 | ||
1421 | return bb->bits[slot][ndx/32] & (1u << (ndx % 32)) ? 1 : 0; | |
1422 | } | |
1423 | #endif | |
1424 | ||
1425 | /* Call this with -1 to start checking from 0. Returns -1 at the end. */ | |
1426 | int bitbag_next_bit(struct bitbag *bb, int after) | |
1427 | { | |
1428 | uint32 bits, mask; | |
1429 | int i, ndx = after + 1; | |
1430 | int slot = ndx / BB_PER_SLOT_BITS; | |
1431 | ndx %= BB_PER_SLOT_BITS; | |
1432 | ||
1433 | mask = (1u << (ndx % 32)) - 1; | |
1434 | for (i = ndx / 32; slot < bb->slot_cnt; slot++, i = mask = 0) { | |
1435 | if (!bb->bits[slot]) | |
1436 | continue; | |
1437 | for ( ; i < BB_PER_SLOT_INTS; i++, mask = 0) { | |
1438 | if (!(bits = bb->bits[slot][i] & ~mask)) | |
1439 | continue; | |
1440 | /* The xor magic figures out the lowest enabled bit in | |
1441 | * bits, and the switch quickly computes log2(bit). */ | |
1442 | switch (bits ^ (bits & (bits-1))) { | |
1443 | #define LOG2(n) case 1u << n: return slot*BB_PER_SLOT_BITS + i*32 + n | |
1444 | LOG2(0); LOG2(1); LOG2(2); LOG2(3); | |
1445 | LOG2(4); LOG2(5); LOG2(6); LOG2(7); | |
1446 | LOG2(8); LOG2(9); LOG2(10); LOG2(11); | |
1447 | LOG2(12); LOG2(13); LOG2(14); LOG2(15); | |
1448 | LOG2(16); LOG2(17); LOG2(18); LOG2(19); | |
1449 | LOG2(20); LOG2(21); LOG2(22); LOG2(23); | |
1450 | LOG2(24); LOG2(25); LOG2(26); LOG2(27); | |
1451 | LOG2(28); LOG2(29); LOG2(30); LOG2(31); | |
1452 | } | |
1453 | return -1; /* impossible... */ | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | return -1; | |
1458 | } |