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552cc11b | 1 | /* |
766141bc | 2 | * Copyright (C) 2008-2014 Tobias Brunner |
552cc11b MW |
3 | * Copyright (C) 2005-2008 Martin Willi |
4 | * Hochschule fuer Technik Rapperswil | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
552cc11b MW |
15 | */ |
16 | ||
766141bc | 17 | #define _GNU_SOURCE /* for memrchr */ |
4de7401a MW |
18 | #ifdef WIN32 |
19 | /* for GetTickCount64, Windows 7 */ | |
20 | # define _WIN32_WINNT 0x0601 | |
21 | #endif | |
22 | ||
23 | #include "utils.h" | |
24 | ||
6c20579a | 25 | #include <sys/stat.h> |
552cc11b | 26 | #include <string.h> |
552cc11b | 27 | #include <stdio.h> |
6c20579a | 28 | #include <unistd.h> |
876961cf | 29 | #include <inttypes.h> |
74b14b40 | 30 | #include <stdint.h> |
d24a74c5 | 31 | #include <limits.h> |
6c20579a | 32 | #include <dirent.h> |
f464d750 | 33 | #include <time.h> |
66c0801d MW |
34 | #ifndef WIN32 |
35 | # include <signal.h> | |
36 | #endif | |
552cc11b | 37 | |
f1c9653e MW |
38 | #include <library.h> |
39 | #include <utils/debug.h> | |
40 | #include <utils/chunk.h> | |
41 | #include <collections/enumerator.h> | |
42 | #include <threading/spinlock.h> | |
66c0801d MW |
43 | #include <threading/mutex.h> |
44 | #include <threading/condvar.h> | |
552cc11b | 45 | |
a8809bb0 | 46 | ENUM(status_names, SUCCESS, NEED_MORE, |
552cc11b MW |
47 | "SUCCESS", |
48 | "FAILED", | |
49 | "OUT_OF_RES", | |
50 | "ALREADY_DONE", | |
51 | "NOT_SUPPORTED", | |
52 | "INVALID_ARG", | |
53 | "NOT_FOUND", | |
54 | "PARSE_ERROR", | |
55 | "VERIFY_ERROR", | |
56 | "INVALID_STATE", | |
57 | "DESTROY_ME", | |
58 | "NEED_MORE", | |
59 | ); | |
60 | ||
552cc11b MW |
61 | /** |
62 | * Described in header. | |
63 | */ | |
01e43e31 | 64 | void memxor(u_int8_t dst[], u_int8_t src[], size_t n) |
552cc11b | 65 | { |
01e43e31 | 66 | int m, i; |
7daf5226 | 67 | |
01e43e31 | 68 | /* byte wise XOR until dst aligned */ |
09846603 | 69 | for (i = 0; (uintptr_t)&dst[i] % sizeof(long) && i < n; i++) |
4fd233a7 | 70 | { |
01e43e31 | 71 | dst[i] ^= src[i]; |
4fd233a7 | 72 | } |
01e43e31 | 73 | /* try to use words if src shares an aligment with dst */ |
74b14b40 | 74 | switch (((uintptr_t)&src[i] % sizeof(long))) |
552cc11b | 75 | { |
01e43e31 MW |
76 | case 0: |
77 | for (m = n - sizeof(long); i <= m; i += sizeof(long)) | |
78 | { | |
79 | *(long*)&dst[i] ^= *(long*)&src[i]; | |
80 | } | |
81 | break; | |
82 | case sizeof(int): | |
83 | for (m = n - sizeof(int); i <= m; i += sizeof(int)) | |
84 | { | |
85 | *(int*)&dst[i] ^= *(int*)&src[i]; | |
86 | } | |
87 | break; | |
88 | case sizeof(short): | |
89 | for (m = n - sizeof(short); i <= m; i += sizeof(short)) | |
90 | { | |
91 | *(short*)&dst[i] ^= *(short*)&src[i]; | |
92 | } | |
93 | break; | |
94 | default: | |
95 | break; | |
96 | } | |
97 | /* byte wise XOR of the rest */ | |
98 | for (; i < n; i++) | |
99 | { | |
100 | dst[i] ^= src[i]; | |
552cc11b MW |
101 | } |
102 | } | |
103 | ||
ed678b52 MW |
104 | /** |
105 | * Described in header. | |
106 | */ | |
107 | void memwipe_noinline(void *ptr, size_t n) | |
108 | { | |
109 | memwipe_inline(ptr, n); | |
110 | } | |
111 | ||
81736d7d TB |
112 | /** |
113 | * Described in header. | |
114 | */ | |
115 | void *memstr(const void *haystack, const char *needle, size_t n) | |
116 | { | |
2ed241ae | 117 | const u_char *pos = haystack; |
7b91011d TB |
118 | size_t l; |
119 | ||
120 | if (!haystack || !needle || (l = strlen(needle)) == 0) | |
121 | { | |
122 | return NULL; | |
123 | } | |
81736d7d TB |
124 | for (; n >= l; ++pos, --n) |
125 | { | |
126 | if (memeq(pos, needle, l)) | |
127 | { | |
128 | return (void*)pos; | |
129 | } | |
130 | } | |
131 | return NULL; | |
132 | } | |
133 | ||
2ed241ae TB |
134 | /** |
135 | * Described in header. | |
136 | */ | |
137 | void *utils_memrchr(const void *s, int c, size_t n) | |
138 | { | |
139 | const u_char *pos; | |
140 | ||
141 | if (!s || !n) | |
142 | { | |
143 | return NULL; | |
144 | } | |
145 | ||
146 | for (pos = s + n - 1; pos >= (u_char*)s; pos--) | |
147 | { | |
148 | if (*pos == (u_char)c) | |
149 | { | |
150 | return (void*)pos; | |
151 | } | |
152 | } | |
153 | return NULL; | |
154 | } | |
155 | ||
d543d9ca TB |
156 | /** |
157 | * Described in header. | |
158 | */ | |
159 | char* translate(char *str, const char *from, const char *to) | |
160 | { | |
161 | char *pos = str; | |
162 | if (strlen(from) != strlen(to)) | |
163 | { | |
164 | return str; | |
165 | } | |
166 | while (pos && *pos) | |
167 | { | |
168 | char *match; | |
169 | if ((match = strchr(from, *pos)) != NULL) | |
170 | { | |
171 | *pos = to[match - from]; | |
172 | } | |
173 | pos++; | |
174 | } | |
175 | return str; | |
ccb6758e TB |
176 | } |
177 | ||
178 | /** | |
179 | * Described in header. | |
180 | */ | |
181 | char* strreplace(const char *str, const char *search, const char *replace) | |
182 | { | |
183 | size_t len, slen, rlen, count = 0; | |
184 | char *res, *pos, *found, *dst; | |
185 | ||
186 | if (!str || !*str || !search || !*search || !replace) | |
187 | { | |
188 | return (char*)str; | |
189 | } | |
190 | slen = strlen(search); | |
191 | rlen = strlen(replace); | |
192 | if (slen != rlen) | |
193 | { | |
194 | for (pos = (char*)str; (pos = strstr(pos, search)); pos += slen) | |
195 | { | |
196 | found = pos; | |
197 | count++; | |
198 | } | |
199 | if (!count) | |
200 | { | |
201 | return (char*)str; | |
202 | } | |
203 | len = (found - str) + strlen(found) + count * (rlen - slen); | |
204 | } | |
205 | else | |
206 | { | |
207 | len = strlen(str); | |
208 | } | |
209 | found = strstr(str, search); | |
210 | if (!found) | |
211 | { | |
212 | return (char*)str; | |
213 | } | |
214 | dst = res = malloc(len + 1); | |
215 | pos = (char*)str; | |
216 | do | |
217 | { | |
218 | len = found - pos; | |
219 | memcpy(dst, pos, len); | |
220 | dst += len; | |
221 | memcpy(dst, replace, rlen); | |
222 | dst += rlen; | |
223 | pos = found + slen; | |
224 | } | |
225 | while ((found = strstr(pos, search))); | |
226 | strcpy(dst, pos); | |
227 | return res; | |
d543d9ca TB |
228 | } |
229 | ||
66c0801d MW |
230 | #ifdef WIN32 |
231 | ||
232 | /** | |
233 | * Flag to indicate signaled wait_sigint() | |
234 | */ | |
235 | static bool sigint_signaled = FALSE; | |
236 | ||
237 | /** | |
238 | * Condvar to wait in wait_sigint() | |
239 | */ | |
240 | static condvar_t *sigint_cond; | |
241 | ||
242 | /** | |
243 | * Mutex to check signaling() | |
244 | */ | |
245 | static mutex_t *sigint_mutex; | |
246 | ||
247 | /** | |
248 | * Control handler to catch ^C | |
249 | */ | |
250 | static BOOL handler(DWORD dwCtrlType) | |
251 | { | |
252 | switch (dwCtrlType) | |
253 | { | |
254 | case CTRL_C_EVENT: | |
255 | case CTRL_BREAK_EVENT: | |
256 | case CTRL_CLOSE_EVENT: | |
257 | sigint_mutex->lock(sigint_mutex); | |
258 | sigint_signaled = TRUE; | |
259 | sigint_cond->signal(sigint_cond); | |
260 | sigint_mutex->unlock(sigint_mutex); | |
261 | return TRUE; | |
262 | default: | |
263 | return FALSE; | |
264 | } | |
265 | } | |
266 | ||
267 | /** | |
268 | * Windows variant | |
269 | */ | |
270 | void wait_sigint() | |
271 | { | |
272 | SetConsoleCtrlHandler(handler, TRUE); | |
273 | ||
274 | sigint_mutex = mutex_create(MUTEX_TYPE_DEFAULT); | |
275 | sigint_cond = condvar_create(CONDVAR_TYPE_DEFAULT); | |
276 | ||
277 | sigint_mutex->lock(sigint_mutex); | |
278 | while (!sigint_signaled) | |
279 | { | |
280 | sigint_cond->wait(sigint_cond, sigint_mutex); | |
281 | } | |
282 | sigint_mutex->unlock(sigint_mutex); | |
283 | ||
284 | sigint_mutex->destroy(sigint_mutex); | |
285 | sigint_cond->destroy(sigint_cond); | |
286 | } | |
287 | ||
288 | #else /* !WIN32 */ | |
289 | ||
290 | /** | |
291 | * Unix variant | |
292 | */ | |
293 | void wait_sigint() | |
294 | { | |
295 | sigset_t set; | |
296 | int sig; | |
297 | ||
298 | sigemptyset(&set); | |
299 | sigaddset(&set, SIGINT); | |
300 | sigaddset(&set, SIGTERM); | |
301 | ||
302 | sigprocmask(SIG_BLOCK, &set, NULL); | |
303 | sigwait(&set, &sig); | |
304 | } | |
305 | ||
306 | #endif | |
307 | ||
766141bc TB |
308 | /** |
309 | * Described in header. | |
310 | */ | |
311 | char* path_dirname(const char *path) | |
312 | { | |
313 | char *pos; | |
314 | ||
8182631b | 315 | pos = path ? strrchr(path, DIRECTORY_SEPARATOR[0]) : NULL; |
766141bc TB |
316 | |
317 | if (pos && !pos[1]) | |
318 | { /* if path ends with slashes we have to look beyond them */ | |
8182631b | 319 | while (pos > path && *pos == DIRECTORY_SEPARATOR[0]) |
766141bc TB |
320 | { /* skip trailing slashes */ |
321 | pos--; | |
322 | } | |
8182631b | 323 | pos = memrchr(path, DIRECTORY_SEPARATOR[0], pos - path + 1); |
766141bc TB |
324 | } |
325 | if (!pos) | |
326 | { | |
2496eaff MW |
327 | #ifdef WIN32 |
328 | if (path && strlen(path)) | |
329 | { | |
330 | if ((isalpha(path[0]) && path[1] == ':')) | |
331 | { /* if just a drive letter given, return that as dirname */ | |
332 | return chunk_clone(chunk_from_chars(path[0], ':', 0)).ptr; | |
333 | } | |
334 | } | |
335 | #endif | |
766141bc TB |
336 | return strdup("."); |
337 | } | |
8182631b | 338 | while (pos > path && *pos == DIRECTORY_SEPARATOR[0]) |
766141bc TB |
339 | { /* skip superfluous slashes */ |
340 | pos--; | |
341 | } | |
342 | return strndup(path, pos - path + 1); | |
343 | } | |
344 | ||
345 | /** | |
346 | * Described in header. | |
347 | */ | |
348 | char* path_basename(const char *path) | |
349 | { | |
350 | char *pos, *trail = NULL; | |
351 | ||
352 | if (!path || !*path) | |
353 | { | |
354 | return strdup("."); | |
355 | } | |
8182631b | 356 | pos = strrchr(path, DIRECTORY_SEPARATOR[0]); |
766141bc TB |
357 | if (pos && !pos[1]) |
358 | { /* if path ends with slashes we have to look beyond them */ | |
8182631b | 359 | while (pos > path && *pos == DIRECTORY_SEPARATOR[0]) |
766141bc TB |
360 | { /* skip trailing slashes */ |
361 | pos--; | |
362 | } | |
8182631b | 363 | if (pos == path && *pos == DIRECTORY_SEPARATOR[0]) |
766141bc | 364 | { /* contains only slashes */ |
8182631b | 365 | return strdup(DIRECTORY_SEPARATOR); |
766141bc TB |
366 | } |
367 | trail = pos + 1; | |
8182631b | 368 | pos = memrchr(path, DIRECTORY_SEPARATOR[0], trail - path); |
766141bc TB |
369 | } |
370 | pos = pos ? pos + 1 : (char*)path; | |
371 | return trail ? strndup(pos, trail - pos) : strdup(pos); | |
372 | } | |
373 | ||
67b3bcd1 MW |
374 | /** |
375 | * Described in header. | |
376 | */ | |
377 | bool path_absolute(const char *path) | |
378 | { | |
379 | if (!path) | |
380 | { | |
381 | return FALSE; | |
382 | } | |
383 | #ifdef WIN32 | |
384 | if (strpfx(path, "\\\\")) | |
385 | { /* UNC */ | |
386 | return TRUE; | |
387 | } | |
388 | if (strlen(path) && isalpha(path[0]) && path[1] == ':') | |
389 | { /* drive letter */ | |
390 | return TRUE; | |
391 | } | |
392 | #else /* !WIN32 */ | |
393 | if (path[0] == DIRECTORY_SEPARATOR[0]) | |
394 | { | |
395 | return TRUE; | |
396 | } | |
397 | #endif | |
398 | return FALSE; | |
399 | } | |
400 | ||
6c20579a TB |
401 | /** |
402 | * Described in header. | |
403 | */ | |
404 | bool mkdir_p(const char *path, mode_t mode) | |
405 | { | |
fc1afcc8 | 406 | int len; |
6c20579a TB |
407 | char *pos, full[PATH_MAX]; |
408 | pos = full; | |
409 | if (!path || *path == '\0') | |
410 | { | |
411 | return TRUE; | |
412 | } | |
413 | len = snprintf(full, sizeof(full)-1, "%s", path); | |
414 | if (len < 0 || len >= sizeof(full)-1) | |
415 | { | |
8b0e0910 | 416 | DBG1(DBG_LIB, "path string %s too long", path); |
6c20579a TB |
417 | return FALSE; |
418 | } | |
419 | /* ensure that the path ends with a '/' */ | |
420 | if (full[len-1] != '/') | |
421 | { | |
422 | full[len++] = '/'; | |
423 | full[len] = '\0'; | |
424 | } | |
425 | /* skip '/' at the beginning */ | |
426 | while (*pos == '/') | |
427 | { | |
428 | pos++; | |
429 | } | |
430 | while ((pos = strchr(pos, '/'))) | |
431 | { | |
432 | *pos = '\0'; | |
433 | if (access(full, F_OK) < 0) | |
434 | { | |
a3f7dfc1 MW |
435 | #ifdef WIN32 |
436 | if (_mkdir(full) < 0) | |
437 | #else | |
6c20579a | 438 | if (mkdir(full, mode) < 0) |
a3f7dfc1 | 439 | #endif |
6c20579a | 440 | { |
8b0e0910 | 441 | DBG1(DBG_LIB, "failed to create directory %s", full); |
6c20579a TB |
442 | return FALSE; |
443 | } | |
444 | } | |
445 | *pos = '/'; | |
446 | pos++; | |
447 | } | |
448 | return TRUE; | |
449 | } | |
450 | ||
4d174272 MW |
451 | ENUM(tty_color_names, TTY_RESET, TTY_BG_DEF, |
452 | "\e[0m", | |
453 | "\e[1m", | |
454 | "\e[4m", | |
455 | "\e[5m", | |
456 | "\e[30m", | |
457 | "\e[31m", | |
458 | "\e[32m", | |
459 | "\e[33m", | |
460 | "\e[34m", | |
461 | "\e[35m", | |
462 | "\e[36m", | |
463 | "\e[37m", | |
464 | "\e[39m", | |
465 | "\e[40m", | |
466 | "\e[41m", | |
467 | "\e[42m", | |
468 | "\e[43m", | |
469 | "\e[44m", | |
470 | "\e[45m", | |
471 | "\e[46m", | |
472 | "\e[47m", | |
473 | "\e[49m", | |
474 | ); | |
475 | ||
476 | /** | |
477 | * Get the escape string for a given TTY color, empty string on non-tty FILE | |
478 | */ | |
479 | char* tty_escape_get(int fd, tty_escape_t escape) | |
480 | { | |
481 | if (!isatty(fd)) | |
482 | { | |
483 | return ""; | |
484 | } | |
485 | switch (escape) | |
486 | { | |
487 | case TTY_RESET: | |
488 | case TTY_BOLD: | |
489 | case TTY_UNDERLINE: | |
490 | case TTY_BLINKING: | |
1f2b8c8c MW |
491 | #ifdef WIN32 |
492 | return ""; | |
493 | #endif | |
4d174272 MW |
494 | case TTY_FG_BLACK: |
495 | case TTY_FG_RED: | |
496 | case TTY_FG_GREEN: | |
497 | case TTY_FG_YELLOW: | |
498 | case TTY_FG_BLUE: | |
499 | case TTY_FG_MAGENTA: | |
500 | case TTY_FG_CYAN: | |
501 | case TTY_FG_WHITE: | |
502 | case TTY_FG_DEF: | |
503 | case TTY_BG_BLACK: | |
504 | case TTY_BG_RED: | |
505 | case TTY_BG_GREEN: | |
506 | case TTY_BG_YELLOW: | |
507 | case TTY_BG_BLUE: | |
508 | case TTY_BG_MAGENTA: | |
509 | case TTY_BG_CYAN: | |
510 | case TTY_BG_WHITE: | |
511 | case TTY_BG_DEF: | |
512 | return enum_to_name(tty_color_names, escape); | |
1f2b8c8c | 513 | /* warn if a escape code is missing */ |
4d174272 MW |
514 | } |
515 | return ""; | |
516 | } | |
2a595276 | 517 | |
9a8fdc15 TB |
518 | #ifndef HAVE_CLOSEFROM |
519 | /** | |
520 | * Described in header. | |
521 | */ | |
522 | void closefrom(int lowfd) | |
523 | { | |
5051bd23 TB |
524 | char fd_dir[PATH_MAX]; |
525 | int maxfd, fd, len; | |
526 | ||
527 | /* try to close only open file descriptors on Linux... */ | |
528 | len = snprintf(fd_dir, sizeof(fd_dir), "/proc/%u/fd", getpid()); | |
4a4cf41b | 529 | if (len > 0 && len < sizeof(fd_dir) && access(fd_dir, F_OK) == 0) |
5051bd23 TB |
530 | { |
531 | enumerator_t *enumerator = enumerator_create_directory(fd_dir); | |
532 | if (enumerator) | |
533 | { | |
68fcf917 | 534 | char *rel; |
5051bd23 TB |
535 | while (enumerator->enumerate(enumerator, &rel, NULL, NULL)) |
536 | { | |
537 | fd = atoi(rel); | |
538 | if (fd >= lowfd) | |
539 | { | |
540 | close(fd); | |
541 | } | |
542 | } | |
543 | enumerator->destroy(enumerator); | |
544 | return; | |
545 | } | |
546 | } | |
547 | ||
548 | /* ...fall back to closing all fds otherwise */ | |
d3c30b35 MW |
549 | #ifdef WIN32 |
550 | maxfd = _getmaxstdio(); | |
551 | #else | |
9a8fdc15 | 552 | maxfd = (int)sysconf(_SC_OPEN_MAX); |
d3c30b35 | 553 | #endif |
9a8fdc15 TB |
554 | if (maxfd < 0) |
555 | { | |
556 | maxfd = 256; | |
557 | } | |
558 | for (fd = lowfd; fd < maxfd; fd++) | |
559 | { | |
560 | close(fd); | |
561 | } | |
562 | } | |
563 | #endif /* HAVE_CLOSEFROM */ | |
564 | ||
3f310c0d MW |
565 | /** |
566 | * Return monotonic time | |
567 | */ | |
568 | time_t time_monotonic(timeval_t *tv) | |
569 | { | |
4de7401a MW |
570 | #ifdef WIN32 |
571 | ULONGLONG ms; | |
572 | time_t s; | |
573 | ||
574 | ms = GetTickCount64(); | |
575 | s = ms / 1000; | |
576 | if (tv) | |
577 | { | |
578 | tv->tv_sec = s; | |
579 | tv->tv_usec = (ms - (s * 1000)) * 1000; | |
580 | } | |
581 | return s; | |
582 | #else /* !WIN32 */ | |
b2944d71 TB |
583 | #if defined(HAVE_CLOCK_GETTIME) && \ |
584 | (defined(HAVE_CONDATTR_CLOCK_MONOTONIC) || \ | |
585 | defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)) | |
3d5818ec MW |
586 | /* as we use time_monotonic() for condvar operations, we use the |
587 | * monotonic time source only if it is also supported by pthread. */ | |
3f310c0d | 588 | timespec_t ts; |
7daf5226 | 589 | |
3f310c0d MW |
590 | if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) |
591 | { | |
592 | if (tv) | |
593 | { | |
594 | tv->tv_sec = ts.tv_sec; | |
595 | tv->tv_usec = ts.tv_nsec / 1000; | |
596 | } | |
597 | return ts.tv_sec; | |
598 | } | |
b2944d71 | 599 | #endif /* HAVE_CLOCK_GETTIME && (...) */ |
3f310c0d MW |
600 | /* Fallback to non-monotonic timestamps: |
601 | * On MAC OS X, creating monotonic timestamps is rather difficult. We | |
602 | * could use mach_absolute_time() and catch sleep/wakeup notifications. | |
3d5818ec MW |
603 | * We stick to the simpler (non-monotonic) gettimeofday() for now. |
604 | * But keep in mind: we need the same time source here as in condvar! */ | |
3f310c0d MW |
605 | if (!tv) |
606 | { | |
607 | return time(NULL); | |
608 | } | |
609 | if (gettimeofday(tv, NULL) != 0) | |
610 | { /* should actually never fail if passed pointers are valid */ | |
611 | return -1; | |
612 | } | |
613 | return tv->tv_sec; | |
4de7401a | 614 | #endif /* !WIN32 */ |
3f310c0d MW |
615 | } |
616 | ||
081ae2eb MW |
617 | /** |
618 | * return null | |
619 | */ | |
620 | void *return_null() | |
621 | { | |
622 | return NULL; | |
623 | } | |
624 | ||
da17b016 MW |
625 | /** |
626 | * returns TRUE | |
627 | */ | |
628 | bool return_true() | |
629 | { | |
630 | return TRUE; | |
631 | } | |
632 | ||
633 | /** | |
634 | * returns FALSE | |
635 | */ | |
636 | bool return_false() | |
637 | { | |
638 | return FALSE; | |
639 | } | |
640 | ||
502edf42 MW |
641 | /** |
642 | * returns FAILED | |
643 | */ | |
644 | status_t return_failed() | |
645 | { | |
646 | return FAILED; | |
647 | } | |
648 | ||
4755ab50 MW |
649 | /** |
650 | * returns SUCCESS | |
651 | */ | |
652 | status_t return_success() | |
653 | { | |
654 | return SUCCESS; | |
655 | } | |
656 | ||
233b853d MW |
657 | /** |
658 | * nop operation | |
659 | */ | |
660 | void nop() | |
661 | { | |
662 | } | |
663 | ||
0f603d42 | 664 | #if !defined(HAVE_GCC_ATOMIC_OPERATIONS) && !defined(HAVE_GCC_SYNC_OPERATIONS) |
efd0fe21 | 665 | |
552cc11b | 666 | /** |
f1c9653e | 667 | * Spinlock for ref_get/put |
552cc11b | 668 | */ |
f1c9653e | 669 | static spinlock_t *ref_lock; |
552cc11b MW |
670 | |
671 | /** | |
efd0fe21 | 672 | * Increase refcount |
552cc11b | 673 | */ |
3160b92a | 674 | refcount_t ref_get(refcount_t *ref) |
552cc11b | 675 | { |
3160b92a MW |
676 | refcount_t current; |
677 | ||
f1c9653e | 678 | ref_lock->lock(ref_lock); |
3160b92a | 679 | current = ++(*ref); |
f1c9653e MW |
680 | ref_lock->unlock(ref_lock); |
681 | ||
3160b92a | 682 | return current; |
552cc11b MW |
683 | } |
684 | ||
685 | /** | |
efd0fe21 | 686 | * Decrease refcount |
552cc11b MW |
687 | */ |
688 | bool ref_put(refcount_t *ref) | |
689 | { | |
690 | bool more_refs; | |
7daf5226 | 691 | |
f1c9653e | 692 | ref_lock->lock(ref_lock); |
21f411b8 | 693 | more_refs = --(*ref) > 0; |
f1c9653e | 694 | ref_lock->unlock(ref_lock); |
552cc11b MW |
695 | return !more_refs; |
696 | } | |
5317dd68 | 697 | |
efedd0d2 TB |
698 | /** |
699 | * Current refcount | |
700 | */ | |
701 | refcount_t ref_cur(refcount_t *ref) | |
702 | { | |
703 | refcount_t current; | |
704 | ||
f1c9653e | 705 | ref_lock->lock(ref_lock); |
efedd0d2 | 706 | current = *ref; |
f1c9653e MW |
707 | ref_lock->unlock(ref_lock); |
708 | ||
efedd0d2 TB |
709 | return current; |
710 | } | |
711 | ||
5317dd68 | 712 | /** |
f1c9653e | 713 | * Spinlock for all compare and swap operations. |
5317dd68 | 714 | */ |
f1c9653e | 715 | static spinlock_t *cas_lock; |
5317dd68 TB |
716 | |
717 | /** | |
718 | * Compare and swap if equal to old value | |
719 | */ | |
720 | #define _cas_impl(name, type) \ | |
721 | bool cas_##name(type *ptr, type oldval, type newval) \ | |
722 | { \ | |
723 | bool swapped; \ | |
f1c9653e | 724 | cas_lock->lock(cas_lock); \ |
5317dd68 | 725 | if ((swapped = (*ptr == oldval))) { *ptr = newval; } \ |
f1c9653e | 726 | cas_lock->unlock(cas_lock); \ |
5317dd68 TB |
727 | return swapped; \ |
728 | } | |
729 | ||
730 | _cas_impl(bool, bool) | |
731 | _cas_impl(ptr, void*) | |
732 | ||
0f603d42 | 733 | #endif /* !HAVE_GCC_ATOMIC_OPERATIONS && !HAVE_GCC_SYNC_OPERATIONS */ |
552cc11b | 734 | |
2077d996 | 735 | |
9df621d2 | 736 | #ifdef HAVE_FMEMOPEN_FALLBACK |
2077d996 MW |
737 | |
738 | static int fmemread(chunk_t *cookie, char *buf, int size) | |
739 | { | |
740 | int len; | |
741 | ||
742 | len = min(size, cookie->len); | |
743 | memcpy(buf, cookie->ptr, len); | |
744 | *cookie = chunk_skip(*cookie, len); | |
745 | ||
746 | return len; | |
747 | } | |
748 | ||
749 | static int fmemwrite(chunk_t *cookie, const char *buf, int size) | |
750 | { | |
751 | int len; | |
752 | ||
753 | len = min(size, cookie->len); | |
754 | memcpy(cookie->ptr, buf, len); | |
755 | *cookie = chunk_skip(*cookie, len); | |
756 | ||
757 | return len; | |
758 | } | |
759 | ||
760 | static int fmemclose(void *cookie) | |
761 | { | |
762 | free(cookie); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | FILE *fmemopen(void *buf, size_t size, const char *mode) | |
767 | { | |
768 | chunk_t *cookie; | |
769 | ||
770 | INIT(cookie, | |
771 | .ptr = buf, | |
772 | .len = size, | |
773 | ); | |
774 | ||
775 | return funopen(cookie, (void*)fmemread, (void*)fmemwrite, NULL, fmemclose); | |
776 | } | |
777 | ||
778 | #endif /* FMEMOPEN fallback*/ | |
779 | ||
f1c9653e MW |
780 | /** |
781 | * See header | |
782 | */ | |
783 | void utils_init() | |
784 | { | |
785 | #ifdef WIN32 | |
786 | windows_init(); | |
787 | #endif | |
788 | ||
789 | #if !defined(HAVE_GCC_ATOMIC_OPERATIONS) && !defined(HAVE_GCC_SYNC_OPERATIONS) | |
790 | ref_lock = spinlock_create(); | |
791 | cas_lock = spinlock_create(); | |
792 | #endif | |
793 | ||
794 | strerror_init(); | |
795 | } | |
796 | ||
797 | /** | |
798 | * See header | |
799 | */ | |
800 | void utils_deinit() | |
801 | { | |
802 | #ifdef WIN32 | |
803 | windows_deinit(); | |
804 | #endif | |
805 | ||
806 | #if !defined(HAVE_GCC_ATOMIC_OPERATIONS) && !defined(HAVE_GCC_SYNC_OPERATIONS) | |
807 | ref_lock->destroy(ref_lock); | |
808 | cas_lock->destroy(cas_lock); | |
809 | #endif | |
810 | ||
811 | strerror_deinit(); | |
812 | } | |
813 | ||
552cc11b | 814 | /** |
d25ce370 | 815 | * Described in header. |
552cc11b | 816 | */ |
1b40b74d | 817 | int time_printf_hook(printf_hook_data_t *data, printf_hook_spec_t *spec, |
d25ce370 | 818 | const void *const *args) |
552cc11b MW |
819 | { |
820 | static const char* months[] = { | |
821 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
822 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" | |
823 | }; | |
824 | time_t *time = *((time_t**)(args[0])); | |
13f2d3a2 | 825 | bool utc = *((int*)(args[1])); |
8f129319 | 826 | struct tm t, *ret = NULL; |
7daf5226 | 827 | |
8f129319 | 828 | if (*time != UNDEFINED_TIME) |
552cc11b | 829 | { |
8f129319 MW |
830 | if (utc) |
831 | { | |
832 | ret = gmtime_r(time, &t); | |
833 | } | |
834 | else | |
835 | { | |
836 | ret = localtime_r(time, &t); | |
837 | } | |
552cc11b | 838 | } |
8f129319 | 839 | if (ret == NULL) |
552cc11b | 840 | { |
8f129319 MW |
841 | return print_in_hook(data, "--- -- --:--:--%s----", |
842 | utc ? " UTC " : " "); | |
552cc11b | 843 | } |
1b40b74d | 844 | return print_in_hook(data, "%s %02d %02d:%02d:%02d%s%04d", |
d25ce370 TB |
845 | months[t.tm_mon], t.tm_mday, t.tm_hour, t.tm_min, |
846 | t.tm_sec, utc ? " UTC " : " ", t.tm_year + 1900); | |
552cc11b MW |
847 | } |
848 | ||
849 | /** | |
d25ce370 | 850 | * Described in header. |
552cc11b | 851 | */ |
1b40b74d | 852 | int time_delta_printf_hook(printf_hook_data_t *data, printf_hook_spec_t *spec, |
d25ce370 | 853 | const void *const *args) |
552cc11b MW |
854 | { |
855 | char* unit = "second"; | |
d25ce370 TB |
856 | time_t *arg1 = *((time_t**)(args[0])); |
857 | time_t *arg2 = *((time_t**)(args[1])); | |
876961cf | 858 | u_int64_t delta = llabs(*arg1 - *arg2); |
7daf5226 | 859 | |
552cc11b MW |
860 | if (delta > 2 * 60 * 60 * 24) |
861 | { | |
862 | delta /= 60 * 60 * 24; | |
863 | unit = "day"; | |
864 | } | |
865 | else if (delta > 2 * 60 * 60) | |
866 | { | |
867 | delta /= 60 * 60; | |
868 | unit = "hour"; | |
869 | } | |
870 | else if (delta > 2 * 60) | |
871 | { | |
872 | delta /= 60; | |
873 | unit = "minute"; | |
874 | } | |
1b40b74d | 875 | return print_in_hook(data, "%" PRIu64 " %s%s", delta, unit, |
876961cf | 876 | (delta == 1) ? "" : "s"); |
552cc11b MW |
877 | } |
878 | ||
879 | /** | |
880 | * Number of bytes per line to dump raw data | |
881 | */ | |
882 | #define BYTES_PER_LINE 16 | |
883 | ||
884 | static char hexdig_upper[] = "0123456789ABCDEF"; | |
885 | ||
886 | /** | |
d25ce370 | 887 | * Described in header. |
552cc11b | 888 | */ |
1b40b74d | 889 | int mem_printf_hook(printf_hook_data_t *data, |
d25ce370 | 890 | printf_hook_spec_t *spec, const void *const *args) |
552cc11b MW |
891 | { |
892 | char *bytes = *((void**)(args[0])); | |
817ab8a8 | 893 | u_int len = *((int*)(args[1])); |
7daf5226 | 894 | |
552cc11b MW |
895 | char buffer[BYTES_PER_LINE * 3]; |
896 | char ascii_buffer[BYTES_PER_LINE + 1]; | |
897 | char *buffer_pos = buffer; | |
898 | char *bytes_pos = bytes; | |
899 | char *bytes_roof = bytes + len; | |
900 | int line_start = 0; | |
901 | int i = 0; | |
902 | int written = 0; | |
7daf5226 | 903 | |
1b40b74d | 904 | written += print_in_hook(data, "=> %u bytes @ %p", len, bytes); |
7daf5226 | 905 | |
552cc11b MW |
906 | while (bytes_pos < bytes_roof) |
907 | { | |
908 | *buffer_pos++ = hexdig_upper[(*bytes_pos >> 4) & 0xF]; | |
909 | *buffer_pos++ = hexdig_upper[ *bytes_pos & 0xF]; | |
910 | ||
911 | ascii_buffer[i++] = | |
912 | (*bytes_pos > 31 && *bytes_pos < 127) ? *bytes_pos : '.'; | |
913 | ||
7daf5226 | 914 | if (++bytes_pos == bytes_roof || i == BYTES_PER_LINE) |
552cc11b MW |
915 | { |
916 | int padding = 3 * (BYTES_PER_LINE - i); | |
7daf5226 | 917 | |
552cc11b MW |
918 | while (padding--) |
919 | { | |
920 | *buffer_pos++ = ' '; | |
921 | } | |
922 | *buffer_pos++ = '\0'; | |
923 | ascii_buffer[i] = '\0'; | |
7daf5226 | 924 | |
1b40b74d | 925 | written += print_in_hook(data, "\n%4d: %s %s", |
323f9f99 | 926 | line_start, buffer, ascii_buffer); |
7daf5226 | 927 | |
552cc11b MW |
928 | buffer_pos = buffer; |
929 | line_start += BYTES_PER_LINE; | |
930 | i = 0; | |
931 | } | |
932 | else | |
933 | { | |
934 | *buffer_pos++ = ' '; | |
935 | } | |
936 | } | |
937 | return written; | |
938 | } |