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1 | /* | |
2 | * Logging of zebra | |
3 | * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #define FRR_DEFINE_DESC_TABLE | |
23 | ||
24 | #include <zebra.h> | |
25 | ||
26 | #include "zclient.h" | |
27 | #include "log.h" | |
28 | #include "log_int.h" | |
29 | #include "memory.h" | |
30 | #include "command.h" | |
31 | #include "lib_errors.h" | |
32 | ||
33 | #ifndef SUNOS_5 | |
34 | #include <sys/un.h> | |
35 | #endif | |
36 | /* for printstack on solaris */ | |
37 | #ifdef HAVE_UCONTEXT_H | |
38 | #include <ucontext.h> | |
39 | #endif | |
40 | ||
41 | #ifdef HAVE_LIBUNWIND | |
42 | #define UNW_LOCAL_ONLY | |
43 | #include <libunwind.h> | |
44 | #include <dlfcn.h> | |
45 | #endif | |
46 | ||
47 | DEFINE_MTYPE_STATIC(LIB, ZLOG, "Logging") | |
48 | ||
49 | static int logfile_fd = -1; /* Used in signal handler. */ | |
50 | ||
51 | struct zlog *zlog_default = NULL; | |
52 | bool zlog_startup_stderr = true; | |
53 | ||
54 | /* lock protecting zlog_default for mt-safe zlog */ | |
55 | pthread_mutex_t loglock = PTHREAD_MUTEX_INITIALIZER; | |
56 | ||
57 | const char *zlog_priority[] = { | |
58 | "emergencies", "alerts", "critical", "errors", "warnings", | |
59 | "notifications", "informational", "debugging", NULL, | |
60 | }; | |
61 | ||
62 | /* | |
63 | * write_wrapper | |
64 | * | |
65 | * glibc has declared that the return value from write *must* not be | |
66 | * ignored. | |
67 | * gcc see's this problem and issues a warning for the line. | |
68 | * | |
69 | * Why is this a big deal you say? Because both of them are right | |
70 | * and if you have -Werror enabled then all calls to write | |
71 | * generate a build error and the build stops. | |
72 | * | |
73 | * clang has helpfully allowed this construct: | |
74 | * (void)write(...) | |
75 | * to tell the compiler yeah I know it has a return value | |
76 | * I don't care about it at this time. | |
77 | * gcc doesn't have this ability. | |
78 | * | |
79 | * This code was written such that it didn't care about the | |
80 | * return value from write. At this time do I want | |
81 | * to go through and fix and test this code for correctness. | |
82 | * So just wrapper the bad behavior and move on. | |
83 | */ | |
84 | static void write_wrapper(int fd, const void *buf, size_t count) | |
85 | { | |
86 | if (write(fd, buf, count) <= 0) | |
87 | return; | |
88 | ||
89 | return; | |
90 | } | |
91 | ||
92 | /** | |
93 | * Looks up a message in a message list by key. | |
94 | * | |
95 | * If the message is not found, returns the provided error message. | |
96 | * | |
97 | * Terminates when it hits a struct message that's all zeros. | |
98 | * | |
99 | * @param mz the message list | |
100 | * @param kz the message key | |
101 | * @param nf the message to return if not found | |
102 | * @return the message | |
103 | */ | |
104 | const char *lookup_msg(const struct message *mz, int kz, const char *nf) | |
105 | { | |
106 | static struct message nt = {0}; | |
107 | const char *rz = nf ? nf : "(no message found)"; | |
108 | const struct message *pnt; | |
109 | for (pnt = mz; memcmp(pnt, &nt, sizeof(struct message)); pnt++) | |
110 | if (pnt->key == kz) { | |
111 | rz = pnt->str ? pnt->str : rz; | |
112 | break; | |
113 | } | |
114 | return rz; | |
115 | } | |
116 | ||
117 | /* For time string format. */ | |
118 | size_t quagga_timestamp(int timestamp_precision, char *buf, size_t buflen) | |
119 | { | |
120 | static struct { | |
121 | time_t last; | |
122 | size_t len; | |
123 | char buf[28]; | |
124 | } cache; | |
125 | struct timeval clock; | |
126 | ||
127 | gettimeofday(&clock, NULL); | |
128 | ||
129 | /* first, we update the cache if the time has changed */ | |
130 | if (cache.last != clock.tv_sec) { | |
131 | struct tm *tm; | |
132 | cache.last = clock.tv_sec; | |
133 | tm = localtime(&cache.last); | |
134 | cache.len = strftime(cache.buf, sizeof(cache.buf), | |
135 | "%Y/%m/%d %H:%M:%S", tm); | |
136 | } | |
137 | /* note: it's not worth caching the subsecond part, because | |
138 | chances are that back-to-back calls are not sufficiently close | |
139 | together | |
140 | for the clock not to have ticked forward */ | |
141 | ||
142 | if (buflen > cache.len) { | |
143 | memcpy(buf, cache.buf, cache.len); | |
144 | if ((timestamp_precision > 0) | |
145 | && (buflen > cache.len + 1 + timestamp_precision)) { | |
146 | /* should we worry about locale issues? */ | |
147 | static const int divisor[] = {0, 100000, 10000, 1000, | |
148 | 100, 10, 1}; | |
149 | int prec; | |
150 | char *p = buf + cache.len + 1 | |
151 | + (prec = timestamp_precision); | |
152 | *p-- = '\0'; | |
153 | while (prec > 6) | |
154 | /* this is unlikely to happen, but protect anyway */ | |
155 | { | |
156 | *p-- = '0'; | |
157 | prec--; | |
158 | } | |
159 | clock.tv_usec /= divisor[prec]; | |
160 | do { | |
161 | *p-- = '0' + (clock.tv_usec % 10); | |
162 | clock.tv_usec /= 10; | |
163 | } while (--prec > 0); | |
164 | *p = '.'; | |
165 | return cache.len + 1 + timestamp_precision; | |
166 | } | |
167 | buf[cache.len] = '\0'; | |
168 | return cache.len; | |
169 | } | |
170 | if (buflen > 0) | |
171 | buf[0] = '\0'; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | /* Utility routine for current time printing. */ | |
176 | static void time_print(FILE *fp, struct timestamp_control *ctl) | |
177 | { | |
178 | if (!ctl->already_rendered) { | |
179 | ctl->len = quagga_timestamp(ctl->precision, ctl->buf, | |
180 | sizeof(ctl->buf)); | |
181 | ctl->already_rendered = 1; | |
182 | } | |
183 | fprintf(fp, "%s ", ctl->buf); | |
184 | } | |
185 | ||
186 | ||
187 | static void vzlog_file(struct zlog *zl, struct timestamp_control *tsctl, | |
188 | const char *proto_str, int record_priority, int priority, | |
189 | FILE *fp, const char *format, va_list args) | |
190 | { | |
191 | va_list ac; | |
192 | ||
193 | time_print(fp, tsctl); | |
194 | if (record_priority) | |
195 | fprintf(fp, "%s: ", zlog_priority[priority]); | |
196 | ||
197 | fprintf(fp, "%s", proto_str); | |
198 | va_copy(ac, args); | |
199 | vfprintf(fp, format, ac); | |
200 | va_end(ac); | |
201 | fprintf(fp, "\n"); | |
202 | fflush(fp); | |
203 | } | |
204 | ||
205 | /* va_list version of zlog. */ | |
206 | void vzlog(int priority, const char *format, va_list args) | |
207 | { | |
208 | pthread_mutex_lock(&loglock); | |
209 | ||
210 | char proto_str[32]; | |
211 | int original_errno = errno; | |
212 | struct timestamp_control tsctl; | |
213 | tsctl.already_rendered = 0; | |
214 | struct zlog *zl = zlog_default; | |
215 | ||
216 | /* When zlog_default is also NULL, use stderr for logging. */ | |
217 | if (zl == NULL) { | |
218 | tsctl.precision = 0; | |
219 | time_print(stderr, &tsctl); | |
220 | fprintf(stderr, "%s: ", "unknown"); | |
221 | vfprintf(stderr, format, args); | |
222 | fprintf(stderr, "\n"); | |
223 | fflush(stderr); | |
224 | ||
225 | /* In this case we return at here. */ | |
226 | errno = original_errno; | |
227 | pthread_mutex_unlock(&loglock); | |
228 | return; | |
229 | } | |
230 | tsctl.precision = zl->timestamp_precision; | |
231 | ||
232 | /* Syslog output */ | |
233 | if (priority <= zl->maxlvl[ZLOG_DEST_SYSLOG]) { | |
234 | va_list ac; | |
235 | va_copy(ac, args); | |
236 | vsyslog(priority | zlog_default->facility, format, ac); | |
237 | va_end(ac); | |
238 | } | |
239 | ||
240 | if (zl->instance) | |
241 | sprintf(proto_str, "%s[%d]: ", zl->protoname, zl->instance); | |
242 | else | |
243 | sprintf(proto_str, "%s: ", zl->protoname); | |
244 | ||
245 | /* File output. */ | |
246 | if ((priority <= zl->maxlvl[ZLOG_DEST_FILE]) && zl->fp) | |
247 | vzlog_file(zl, &tsctl, proto_str, zl->record_priority, priority, | |
248 | zl->fp, format, args); | |
249 | ||
250 | /* fixed-config logging to stderr while we're stating up & haven't | |
251 | * daemonized / reached mainloop yet | |
252 | * | |
253 | * note the "else" on stdout output -- we don't want to print the same | |
254 | * message to both stderr and stdout. */ | |
255 | if (zlog_startup_stderr && priority <= LOG_WARNING) | |
256 | vzlog_file(zl, &tsctl, proto_str, 1, priority, stderr, format, | |
257 | args); | |
258 | else if (priority <= zl->maxlvl[ZLOG_DEST_STDOUT]) | |
259 | vzlog_file(zl, &tsctl, proto_str, zl->record_priority, priority, | |
260 | stdout, format, args); | |
261 | ||
262 | /* Terminal monitor. */ | |
263 | if (priority <= zl->maxlvl[ZLOG_DEST_MONITOR]) | |
264 | vty_log((zl->record_priority ? zlog_priority[priority] : NULL), | |
265 | proto_str, format, &tsctl, args); | |
266 | ||
267 | errno = original_errno; | |
268 | pthread_mutex_unlock(&loglock); | |
269 | } | |
270 | ||
271 | int vzlog_test(int priority) | |
272 | { | |
273 | pthread_mutex_lock(&loglock); | |
274 | ||
275 | int ret = 0; | |
276 | ||
277 | struct zlog *zl = zlog_default; | |
278 | ||
279 | /* When zlog_default is also NULL, use stderr for logging. */ | |
280 | if (zl == NULL) | |
281 | ret = 1; | |
282 | /* Syslog output */ | |
283 | else if (priority <= zl->maxlvl[ZLOG_DEST_SYSLOG]) | |
284 | ret = 1; | |
285 | /* File output. */ | |
286 | else if ((priority <= zl->maxlvl[ZLOG_DEST_FILE]) && zl->fp) | |
287 | ret = 1; | |
288 | /* stdout output. */ | |
289 | else if (priority <= zl->maxlvl[ZLOG_DEST_STDOUT]) | |
290 | ret = 1; | |
291 | /* Terminal monitor. */ | |
292 | else if (priority <= zl->maxlvl[ZLOG_DEST_MONITOR]) | |
293 | ret = 1; | |
294 | ||
295 | pthread_mutex_unlock(&loglock); | |
296 | ||
297 | return ret; | |
298 | } | |
299 | ||
300 | static char *str_append(char *dst, int len, const char *src) | |
301 | { | |
302 | while ((len-- > 0) && *src) | |
303 | *dst++ = *src++; | |
304 | return dst; | |
305 | } | |
306 | ||
307 | static char *num_append(char *s, int len, unsigned long x) | |
308 | { | |
309 | char buf[30]; | |
310 | char *t; | |
311 | ||
312 | if (!x) | |
313 | return str_append(s, len, "0"); | |
314 | *(t = &buf[sizeof(buf) - 1]) = '\0'; | |
315 | while (x && (t > buf)) { | |
316 | *--t = '0' + (x % 10); | |
317 | x /= 10; | |
318 | } | |
319 | return str_append(s, len, t); | |
320 | } | |
321 | ||
322 | #if defined(SA_SIGINFO) \ | |
323 | || defined(HAVE_PRINTSTACK) \ | |
324 | || defined(HAVE_GLIBC_BACKTRACE) | |
325 | static char *hex_append(char *s, int len, unsigned long x) | |
326 | { | |
327 | char buf[30]; | |
328 | char *t; | |
329 | ||
330 | if (!x) | |
331 | return str_append(s, len, "0"); | |
332 | *(t = &buf[sizeof(buf) - 1]) = '\0'; | |
333 | while (x && (t > buf)) { | |
334 | unsigned int cc = (x % 16); | |
335 | *--t = ((cc < 10) ? ('0' + cc) : ('a' + cc - 10)); | |
336 | x /= 16; | |
337 | } | |
338 | return str_append(s, len, t); | |
339 | } | |
340 | #endif | |
341 | ||
342 | /* Needs to be enhanced to support Solaris. */ | |
343 | static int syslog_connect(void) | |
344 | { | |
345 | #ifdef SUNOS_5 | |
346 | return -1; | |
347 | #else | |
348 | int fd; | |
349 | char *s; | |
350 | struct sockaddr_un addr; | |
351 | ||
352 | if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) | |
353 | return -1; | |
354 | addr.sun_family = AF_UNIX; | |
355 | #ifdef _PATH_LOG | |
356 | #define SYSLOG_SOCKET_PATH _PATH_LOG | |
357 | #else | |
358 | #define SYSLOG_SOCKET_PATH "/dev/log" | |
359 | #endif | |
360 | s = str_append(addr.sun_path, sizeof(addr.sun_path), | |
361 | SYSLOG_SOCKET_PATH); | |
362 | #undef SYSLOG_SOCKET_PATH | |
363 | *s = '\0'; | |
364 | if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) { | |
365 | close(fd); | |
366 | return -1; | |
367 | } | |
368 | return fd; | |
369 | #endif | |
370 | } | |
371 | ||
372 | static void syslog_sigsafe(int priority, const char *msg, size_t msglen) | |
373 | { | |
374 | static int syslog_fd = -1; | |
375 | char buf[sizeof("<1234567890>ripngd[1234567890]: ") + msglen + 50]; | |
376 | char *s; | |
377 | ||
378 | if ((syslog_fd < 0) && ((syslog_fd = syslog_connect()) < 0)) | |
379 | return; | |
380 | ||
381 | #define LOC s,buf+sizeof(buf)-s | |
382 | s = buf; | |
383 | s = str_append(LOC, "<"); | |
384 | s = num_append(LOC, priority); | |
385 | s = str_append(LOC, ">"); | |
386 | /* forget about the timestamp, too difficult in a signal handler */ | |
387 | s = str_append(LOC, zlog_default->ident); | |
388 | if (zlog_default->syslog_options & LOG_PID) { | |
389 | s = str_append(LOC, "["); | |
390 | s = num_append(LOC, getpid()); | |
391 | s = str_append(LOC, "]"); | |
392 | } | |
393 | s = str_append(LOC, ": "); | |
394 | s = str_append(LOC, msg); | |
395 | write_wrapper(syslog_fd, buf, s - buf); | |
396 | #undef LOC | |
397 | } | |
398 | ||
399 | static int open_crashlog(void) | |
400 | { | |
401 | #define CRASHLOG_PREFIX "/var/tmp/quagga." | |
402 | #define CRASHLOG_SUFFIX "crashlog" | |
403 | if (zlog_default && zlog_default->ident) { | |
404 | /* Avoid strlen since it is not async-signal-safe. */ | |
405 | const char *p; | |
406 | size_t ilen; | |
407 | ||
408 | for (p = zlog_default->ident, ilen = 0; *p; p++) | |
409 | ilen++; | |
410 | { | |
411 | char buf[sizeof(CRASHLOG_PREFIX) + ilen | |
412 | + sizeof(CRASHLOG_SUFFIX) + 3]; | |
413 | char *s = buf; | |
414 | #define LOC s,buf+sizeof(buf)-s | |
415 | s = str_append(LOC, CRASHLOG_PREFIX); | |
416 | s = str_append(LOC, zlog_default->ident); | |
417 | s = str_append(LOC, "."); | |
418 | s = str_append(LOC, CRASHLOG_SUFFIX); | |
419 | #undef LOC | |
420 | *s = '\0'; | |
421 | return open(buf, O_WRONLY | O_CREAT | O_EXCL, | |
422 | LOGFILE_MASK); | |
423 | } | |
424 | } | |
425 | return open(CRASHLOG_PREFIX CRASHLOG_SUFFIX, | |
426 | O_WRONLY | O_CREAT | O_EXCL, LOGFILE_MASK); | |
427 | #undef CRASHLOG_SUFFIX | |
428 | #undef CRASHLOG_PREFIX | |
429 | } | |
430 | ||
431 | /* Note: the goal here is to use only async-signal-safe functions. */ | |
432 | void zlog_signal(int signo, const char *action | |
433 | #ifdef SA_SIGINFO | |
434 | , | |
435 | siginfo_t *siginfo, void *program_counter | |
436 | #endif | |
437 | ) | |
438 | { | |
439 | time_t now; | |
440 | char buf[sizeof("DEFAULT: Received signal S at T (si_addr 0xP, PC 0xP); aborting...") | |
441 | + 100]; | |
442 | char *s = buf; | |
443 | char *msgstart = buf; | |
444 | #define LOC s,buf+sizeof(buf)-s | |
445 | ||
446 | time(&now); | |
447 | if (zlog_default) { | |
448 | s = str_append(LOC, zlog_default->protoname); | |
449 | *s++ = ':'; | |
450 | *s++ = ' '; | |
451 | msgstart = s; | |
452 | } | |
453 | s = str_append(LOC, "Received signal "); | |
454 | s = num_append(LOC, signo); | |
455 | s = str_append(LOC, " at "); | |
456 | s = num_append(LOC, now); | |
457 | #ifdef SA_SIGINFO | |
458 | s = str_append(LOC, " (si_addr 0x"); | |
459 | s = hex_append(LOC, (unsigned long)(siginfo->si_addr)); | |
460 | if (program_counter) { | |
461 | s = str_append(LOC, ", PC 0x"); | |
462 | s = hex_append(LOC, (unsigned long)program_counter); | |
463 | } | |
464 | s = str_append(LOC, "); "); | |
465 | #else /* SA_SIGINFO */ | |
466 | s = str_append(LOC, "; "); | |
467 | #endif /* SA_SIGINFO */ | |
468 | s = str_append(LOC, action); | |
469 | if (s < buf + sizeof(buf)) | |
470 | *s++ = '\n'; | |
471 | ||
472 | /* N.B. implicit priority is most severe */ | |
473 | #define PRI LOG_CRIT | |
474 | ||
475 | #define DUMP(FD) write_wrapper(FD, buf, s-buf); | |
476 | /* If no file logging configured, try to write to fallback log file. */ | |
477 | if ((logfile_fd >= 0) || ((logfile_fd = open_crashlog()) >= 0)) | |
478 | DUMP(logfile_fd) | |
479 | if (!zlog_default) | |
480 | DUMP(STDERR_FILENO) | |
481 | else { | |
482 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_STDOUT]) | |
483 | DUMP(STDOUT_FILENO) | |
484 | /* Remove trailing '\n' for monitor and syslog */ | |
485 | *--s = '\0'; | |
486 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_MONITOR]) | |
487 | vty_log_fixed(buf, s - buf); | |
488 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_SYSLOG]) | |
489 | syslog_sigsafe(PRI | zlog_default->facility, msgstart, | |
490 | s - msgstart); | |
491 | } | |
492 | #undef DUMP | |
493 | ||
494 | zlog_backtrace_sigsafe(PRI, | |
495 | #ifdef SA_SIGINFO | |
496 | program_counter | |
497 | #else | |
498 | NULL | |
499 | #endif | |
500 | ); | |
501 | ||
502 | s = buf; | |
503 | struct thread *tc; | |
504 | tc = pthread_getspecific(thread_current); | |
505 | if (!tc) | |
506 | s = str_append(LOC, "no thread information available\n"); | |
507 | else { | |
508 | s = str_append(LOC, "in thread "); | |
509 | s = str_append(LOC, tc->funcname); | |
510 | s = str_append(LOC, " scheduled from "); | |
511 | s = str_append(LOC, tc->schedfrom); | |
512 | s = str_append(LOC, ":"); | |
513 | s = num_append(LOC, tc->schedfrom_line); | |
514 | s = str_append(LOC, "\n"); | |
515 | } | |
516 | ||
517 | #define DUMP(FD) write_wrapper(FD, buf, s-buf); | |
518 | /* If no file logging configured, try to write to fallback log file. */ | |
519 | if (logfile_fd >= 0) | |
520 | DUMP(logfile_fd) | |
521 | if (!zlog_default) | |
522 | DUMP(STDERR_FILENO) | |
523 | else { | |
524 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_STDOUT]) | |
525 | DUMP(STDOUT_FILENO) | |
526 | /* Remove trailing '\n' for monitor and syslog */ | |
527 | *--s = '\0'; | |
528 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_MONITOR]) | |
529 | vty_log_fixed(buf, s - buf); | |
530 | if (PRI <= zlog_default->maxlvl[ZLOG_DEST_SYSLOG]) | |
531 | syslog_sigsafe(PRI | zlog_default->facility, msgstart, | |
532 | s - msgstart); | |
533 | } | |
534 | #undef DUMP | |
535 | ||
536 | #undef PRI | |
537 | #undef LOC | |
538 | } | |
539 | ||
540 | /* Log a backtrace using only async-signal-safe functions. | |
541 | Needs to be enhanced to support syslog logging. */ | |
542 | void zlog_backtrace_sigsafe(int priority, void *program_counter) | |
543 | { | |
544 | #ifdef HAVE_LIBUNWIND | |
545 | char buf[100]; | |
546 | unw_cursor_t cursor; | |
547 | unw_context_t uc; | |
548 | unw_word_t ip, off, sp; | |
549 | Dl_info dlinfo; | |
550 | ||
551 | unw_getcontext(&uc); | |
552 | unw_init_local(&cursor, &uc); | |
553 | while (unw_step(&cursor) > 0) { | |
554 | char name[128] = "?"; | |
555 | ||
556 | unw_get_reg(&cursor, UNW_REG_IP, &ip); | |
557 | unw_get_reg(&cursor, UNW_REG_SP, &sp); | |
558 | ||
559 | if (unw_is_signal_frame(&cursor)) | |
560 | dprintf(2, " ---- signal ----\n"); | |
561 | ||
562 | if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off)) { | |
563 | snprintf(name, sizeof(name), "%s+%#lx", | |
564 | buf, (long)off); | |
565 | } | |
566 | dprintf(2, "%-30s %16lx %16lx", name, (long)ip, (long)sp); | |
567 | if (dladdr((void *)ip, &dlinfo)) { | |
568 | dprintf(2, " %s (mapped at %p)", | |
569 | dlinfo.dli_fname, dlinfo.dli_fbase); | |
570 | } | |
571 | dprintf(2, "\n"); | |
572 | ||
573 | } | |
574 | #elif defined(HAVE_GLIBC_BACKTRACE) || defined(HAVE_PRINTSTACK) | |
575 | static const char pclabel[] = "Program counter: "; | |
576 | void *array[64]; | |
577 | int size; | |
578 | char buf[100]; | |
579 | char *s, **bt = NULL; | |
580 | #define LOC s,buf+sizeof(buf)-s | |
581 | ||
582 | #ifdef HAVE_GLIBC_BACKTRACE | |
583 | size = backtrace(array, array_size(array)); | |
584 | if (size <= 0 || (size_t)size > array_size(array)) | |
585 | return; | |
586 | ||
587 | #define DUMP(FD) \ | |
588 | { \ | |
589 | if (program_counter) { \ | |
590 | write_wrapper(FD, pclabel, sizeof(pclabel) - 1); \ | |
591 | backtrace_symbols_fd(&program_counter, 1, FD); \ | |
592 | } \ | |
593 | write_wrapper(FD, buf, s - buf); \ | |
594 | backtrace_symbols_fd(array, size, FD); \ | |
595 | } | |
596 | #elif defined(HAVE_PRINTSTACK) | |
597 | #define DUMP(FD) \ | |
598 | { \ | |
599 | if (program_counter) \ | |
600 | write_wrapper((FD), pclabel, sizeof(pclabel) - 1); \ | |
601 | write_wrapper((FD), buf, s - buf); \ | |
602 | printstack((FD)); \ | |
603 | } | |
604 | #endif /* HAVE_GLIBC_BACKTRACE, HAVE_PRINTSTACK */ | |
605 | ||
606 | s = buf; | |
607 | s = str_append(LOC, "Backtrace for "); | |
608 | s = num_append(LOC, size); | |
609 | s = str_append(LOC, " stack frames:\n"); | |
610 | ||
611 | if ((logfile_fd >= 0) || ((logfile_fd = open_crashlog()) >= 0)) | |
612 | DUMP(logfile_fd) | |
613 | if (!zlog_default) | |
614 | DUMP(STDERR_FILENO) | |
615 | else { | |
616 | if (priority <= zlog_default->maxlvl[ZLOG_DEST_STDOUT]) | |
617 | DUMP(STDOUT_FILENO) | |
618 | /* Remove trailing '\n' for monitor and syslog */ | |
619 | *--s = '\0'; | |
620 | if (priority <= zlog_default->maxlvl[ZLOG_DEST_MONITOR]) | |
621 | vty_log_fixed(buf, s - buf); | |
622 | if (priority <= zlog_default->maxlvl[ZLOG_DEST_SYSLOG]) | |
623 | syslog_sigsafe(priority | zlog_default->facility, buf, | |
624 | s - buf); | |
625 | { | |
626 | int i; | |
627 | #ifdef HAVE_GLIBC_BACKTRACE | |
628 | bt = backtrace_symbols(array, size); | |
629 | #endif | |
630 | /* Just print the function addresses. */ | |
631 | for (i = 0; i < size; i++) { | |
632 | s = buf; | |
633 | if (bt) | |
634 | s = str_append(LOC, bt[i]); | |
635 | else { | |
636 | s = str_append(LOC, "[bt "); | |
637 | s = num_append(LOC, i); | |
638 | s = str_append(LOC, "] 0x"); | |
639 | s = hex_append( | |
640 | LOC, (unsigned long)(array[i])); | |
641 | } | |
642 | *s = '\0'; | |
643 | if (priority | |
644 | <= zlog_default->maxlvl[ZLOG_DEST_MONITOR]) | |
645 | vty_log_fixed(buf, s - buf); | |
646 | if (priority | |
647 | <= zlog_default->maxlvl[ZLOG_DEST_SYSLOG]) | |
648 | syslog_sigsafe( | |
649 | priority | |
650 | | zlog_default | |
651 | ->facility, | |
652 | buf, s - buf); | |
653 | } | |
654 | if (bt) | |
655 | free(bt); | |
656 | } | |
657 | } | |
658 | #undef DUMP | |
659 | #undef LOC | |
660 | #endif /* HAVE_STRACK_TRACE */ | |
661 | } | |
662 | ||
663 | void zlog_backtrace(int priority) | |
664 | { | |
665 | #ifdef HAVE_LIBUNWIND | |
666 | char buf[100]; | |
667 | unw_cursor_t cursor; | |
668 | unw_context_t uc; | |
669 | unw_word_t ip, off, sp; | |
670 | Dl_info dlinfo; | |
671 | ||
672 | unw_getcontext(&uc); | |
673 | unw_init_local(&cursor, &uc); | |
674 | zlog(priority, "Backtrace:"); | |
675 | while (unw_step(&cursor) > 0) { | |
676 | char name[128] = "?"; | |
677 | ||
678 | unw_get_reg(&cursor, UNW_REG_IP, &ip); | |
679 | unw_get_reg(&cursor, UNW_REG_SP, &sp); | |
680 | ||
681 | if (unw_is_signal_frame(&cursor)) | |
682 | zlog(priority, " ---- signal ----"); | |
683 | ||
684 | if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off)) | |
685 | snprintf(name, sizeof(name), "%s+%#lx", | |
686 | buf, (long)off); | |
687 | ||
688 | if (dladdr((void *)ip, &dlinfo)) | |
689 | zlog(priority, "%-30s %16lx %16lx %s (mapped at %p)", | |
690 | name, (long)ip, (long)sp, | |
691 | dlinfo.dli_fname, dlinfo.dli_fbase); | |
692 | else | |
693 | zlog(priority, "%-30s %16lx %16lx", | |
694 | name, (long)ip, (long)sp); | |
695 | } | |
696 | #elif defined(HAVE_GLIBC_BACKTRACE) | |
697 | void *array[20]; | |
698 | int size, i; | |
699 | char **strings; | |
700 | ||
701 | size = backtrace(array, array_size(array)); | |
702 | if (size <= 0 || (size_t)size > array_size(array)) { | |
703 | flog_err_sys( | |
704 | EC_LIB_SYSTEM_CALL, | |
705 | "Cannot get backtrace, returned invalid # of frames %d " | |
706 | "(valid range is between 1 and %lu)", | |
707 | size, (unsigned long)(array_size(array))); | |
708 | return; | |
709 | } | |
710 | zlog(priority, "Backtrace for %d stack frames:", size); | |
711 | if (!(strings = backtrace_symbols(array, size))) { | |
712 | flog_err_sys(EC_LIB_SYSTEM_CALL, | |
713 | "Cannot get backtrace symbols (out of memory?)"); | |
714 | for (i = 0; i < size; i++) | |
715 | zlog(priority, "[bt %d] %p", i, array[i]); | |
716 | } else { | |
717 | for (i = 0; i < size; i++) | |
718 | zlog(priority, "[bt %d] %s", i, strings[i]); | |
719 | free(strings); | |
720 | } | |
721 | #else /* !HAVE_GLIBC_BACKTRACE && !HAVE_LIBUNWIND */ | |
722 | zlog(priority, "No backtrace available on this platform."); | |
723 | #endif | |
724 | } | |
725 | ||
726 | void zlog(int priority, const char *format, ...) | |
727 | { | |
728 | va_list args; | |
729 | ||
730 | va_start(args, format); | |
731 | vzlog(priority, format, args); | |
732 | va_end(args); | |
733 | } | |
734 | ||
735 | #define ZLOG_FUNC(FUNCNAME, PRIORITY) \ | |
736 | void FUNCNAME(const char *format, ...) \ | |
737 | { \ | |
738 | va_list args; \ | |
739 | va_start(args, format); \ | |
740 | vzlog(PRIORITY, format, args); \ | |
741 | va_end(args); \ | |
742 | } | |
743 | ||
744 | ZLOG_FUNC(zlog_err, LOG_ERR) | |
745 | ||
746 | ZLOG_FUNC(zlog_warn, LOG_WARNING) | |
747 | ||
748 | ZLOG_FUNC(zlog_info, LOG_INFO) | |
749 | ||
750 | ZLOG_FUNC(zlog_notice, LOG_NOTICE) | |
751 | ||
752 | ZLOG_FUNC(zlog_debug, LOG_DEBUG) | |
753 | ||
754 | #undef ZLOG_FUNC | |
755 | ||
756 | void zlog_thread_info(int log_level) | |
757 | { | |
758 | struct thread *tc; | |
759 | tc = pthread_getspecific(thread_current); | |
760 | ||
761 | if (tc) | |
762 | zlog(log_level, | |
763 | "Current thread function %s, scheduled from " | |
764 | "file %s, line %u", | |
765 | tc->funcname, tc->schedfrom, tc->schedfrom_line); | |
766 | else | |
767 | zlog(log_level, "Current thread not known/applicable"); | |
768 | } | |
769 | ||
770 | void _zlog_assert_failed(const char *assertion, const char *file, | |
771 | unsigned int line, const char *function) | |
772 | { | |
773 | /* Force fallback file logging? */ | |
774 | if (zlog_default && !zlog_default->fp | |
775 | && ((logfile_fd = open_crashlog()) >= 0) | |
776 | && ((zlog_default->fp = fdopen(logfile_fd, "w")) != NULL)) | |
777 | zlog_default->maxlvl[ZLOG_DEST_FILE] = LOG_ERR; | |
778 | zlog(LOG_CRIT, "Assertion `%s' failed in file %s, line %u, function %s", | |
779 | assertion, file, line, (function ? function : "?")); | |
780 | zlog_backtrace(LOG_CRIT); | |
781 | zlog_thread_info(LOG_CRIT); | |
782 | log_memstats(stderr, "log"); | |
783 | abort(); | |
784 | } | |
785 | ||
786 | void memory_oom(size_t size, const char *name) | |
787 | { | |
788 | flog_err_sys(EC_LIB_SYSTEM_CALL, | |
789 | "out of memory: failed to allocate %zu bytes for %s" | |
790 | "object", | |
791 | size, name); | |
792 | zlog_backtrace(LOG_ERR); | |
793 | abort(); | |
794 | } | |
795 | ||
796 | /* Open log stream */ | |
797 | void openzlog(const char *progname, const char *protoname, | |
798 | unsigned short instance, int syslog_flags, int syslog_facility) | |
799 | { | |
800 | struct zlog *zl; | |
801 | unsigned int i; | |
802 | ||
803 | zl = XCALLOC(MTYPE_ZLOG, sizeof(struct zlog)); | |
804 | ||
805 | zl->ident = progname; | |
806 | zl->protoname = protoname; | |
807 | zl->instance = instance; | |
808 | zl->facility = syslog_facility; | |
809 | zl->syslog_options = syslog_flags; | |
810 | ||
811 | /* Set default logging levels. */ | |
812 | for (i = 0; i < array_size(zl->maxlvl); i++) | |
813 | zl->maxlvl[i] = ZLOG_DISABLED; | |
814 | zl->maxlvl[ZLOG_DEST_MONITOR] = LOG_DEBUG; | |
815 | zl->default_lvl = LOG_DEBUG; | |
816 | ||
817 | openlog(progname, syslog_flags, zl->facility); | |
818 | ||
819 | pthread_mutex_lock(&loglock); | |
820 | zlog_default = zl; | |
821 | pthread_mutex_unlock(&loglock); | |
822 | ||
823 | #ifdef HAVE_GLIBC_BACKTRACE | |
824 | /* work around backtrace() using lazily resolved dynamically linked | |
825 | * symbols, which will otherwise cause funny breakage in the SEGV | |
826 | * handler. | |
827 | * (particularly, the dynamic linker can call malloc(), which uses locks | |
828 | * in programs linked with -pthread, thus can deadlock.) */ | |
829 | void *bt[4]; | |
830 | backtrace(bt, array_size(bt)); | |
831 | free(backtrace_symbols(bt, 0)); | |
832 | backtrace_symbols_fd(bt, 0, 0); | |
833 | #endif | |
834 | } | |
835 | ||
836 | void closezlog(void) | |
837 | { | |
838 | pthread_mutex_lock(&loglock); | |
839 | struct zlog *zl = zlog_default; | |
840 | ||
841 | closelog(); | |
842 | ||
843 | if (zl->fp != NULL) | |
844 | fclose(zl->fp); | |
845 | ||
846 | if (zl->filename != NULL) | |
847 | XFREE(MTYPE_ZLOG, zl->filename); | |
848 | ||
849 | XFREE(MTYPE_ZLOG, zl); | |
850 | zlog_default = NULL; | |
851 | pthread_mutex_unlock(&loglock); | |
852 | } | |
853 | ||
854 | /* Called from command.c. */ | |
855 | void zlog_set_level(zlog_dest_t dest, int log_level) | |
856 | { | |
857 | pthread_mutex_lock(&loglock); | |
858 | zlog_default->maxlvl[dest] = log_level; | |
859 | pthread_mutex_unlock(&loglock); | |
860 | } | |
861 | ||
862 | int zlog_set_file(const char *filename, int log_level) | |
863 | { | |
864 | struct zlog *zl; | |
865 | FILE *fp; | |
866 | mode_t oldumask; | |
867 | int ret = 1; | |
868 | ||
869 | /* There is opend file. */ | |
870 | zlog_reset_file(); | |
871 | ||
872 | /* Open file. */ | |
873 | oldumask = umask(0777 & ~LOGFILE_MASK); | |
874 | fp = fopen(filename, "a"); | |
875 | umask(oldumask); | |
876 | if (fp == NULL) { | |
877 | ret = 0; | |
878 | } else { | |
879 | pthread_mutex_lock(&loglock); | |
880 | zl = zlog_default; | |
881 | ||
882 | /* Set flags. */ | |
883 | zl->filename = XSTRDUP(MTYPE_ZLOG, filename); | |
884 | zl->maxlvl[ZLOG_DEST_FILE] = log_level; | |
885 | zl->fp = fp; | |
886 | logfile_fd = fileno(fp); | |
887 | pthread_mutex_unlock(&loglock); | |
888 | } | |
889 | ||
890 | return ret; | |
891 | } | |
892 | ||
893 | /* Reset opend file. */ | |
894 | int zlog_reset_file(void) | |
895 | { | |
896 | pthread_mutex_lock(&loglock); | |
897 | ||
898 | struct zlog *zl = zlog_default; | |
899 | ||
900 | if (zl->fp) | |
901 | fclose(zl->fp); | |
902 | zl->fp = NULL; | |
903 | logfile_fd = -1; | |
904 | zl->maxlvl[ZLOG_DEST_FILE] = ZLOG_DISABLED; | |
905 | ||
906 | if (zl->filename) | |
907 | XFREE(MTYPE_ZLOG, zl->filename); | |
908 | zl->filename = NULL; | |
909 | ||
910 | pthread_mutex_unlock(&loglock); | |
911 | ||
912 | return 1; | |
913 | } | |
914 | ||
915 | /* Reopen log file. */ | |
916 | int zlog_rotate(void) | |
917 | { | |
918 | pthread_mutex_lock(&loglock); | |
919 | ||
920 | struct zlog *zl = zlog_default; | |
921 | int level; | |
922 | int ret = 1; | |
923 | ||
924 | if (zl->fp) | |
925 | fclose(zl->fp); | |
926 | zl->fp = NULL; | |
927 | logfile_fd = -1; | |
928 | level = zl->maxlvl[ZLOG_DEST_FILE]; | |
929 | zl->maxlvl[ZLOG_DEST_FILE] = ZLOG_DISABLED; | |
930 | ||
931 | if (zl->filename) { | |
932 | mode_t oldumask; | |
933 | int save_errno; | |
934 | ||
935 | oldumask = umask(0777 & ~LOGFILE_MASK); | |
936 | zl->fp = fopen(zl->filename, "a"); | |
937 | save_errno = errno; | |
938 | umask(oldumask); | |
939 | if (zl->fp == NULL) { | |
940 | ||
941 | pthread_mutex_unlock(&loglock); | |
942 | ||
943 | flog_err_sys( | |
944 | EC_LIB_SYSTEM_CALL, | |
945 | "Log rotate failed: cannot open file %s for append: %s", | |
946 | zl->filename, safe_strerror(save_errno)); | |
947 | ret = -1; | |
948 | ||
949 | pthread_mutex_lock(&loglock); | |
950 | } else { | |
951 | logfile_fd = fileno(zl->fp); | |
952 | zl->maxlvl[ZLOG_DEST_FILE] = level; | |
953 | } | |
954 | } | |
955 | ||
956 | pthread_mutex_unlock(&loglock); | |
957 | ||
958 | return ret; | |
959 | } | |
960 | ||
961 | /* Wrapper around strerror to handle case where it returns NULL. */ | |
962 | const char *safe_strerror(int errnum) | |
963 | { | |
964 | const char *s = strerror(errnum); | |
965 | return (s != NULL) ? s : "Unknown error"; | |
966 | } | |
967 | ||
968 | #define DESC_ENTRY(T) [(T)] = { (T), (#T), '\0' } | |
969 | static const struct zebra_desc_table command_types[] = { | |
970 | DESC_ENTRY(ZEBRA_INTERFACE_ADD), | |
971 | DESC_ENTRY(ZEBRA_INTERFACE_DELETE), | |
972 | DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_ADD), | |
973 | DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_DELETE), | |
974 | DESC_ENTRY(ZEBRA_INTERFACE_UP), | |
975 | DESC_ENTRY(ZEBRA_INTERFACE_DOWN), | |
976 | DESC_ENTRY(ZEBRA_INTERFACE_SET_MASTER), | |
977 | DESC_ENTRY(ZEBRA_ROUTE_ADD), | |
978 | DESC_ENTRY(ZEBRA_ROUTE_DELETE), | |
979 | DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_OWNER), | |
980 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_ADD), | |
981 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_DELETE), | |
982 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_ADD), | |
983 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE), | |
984 | DESC_ENTRY(ZEBRA_ROUTER_ID_ADD), | |
985 | DESC_ENTRY(ZEBRA_ROUTER_ID_DELETE), | |
986 | DESC_ENTRY(ZEBRA_ROUTER_ID_UPDATE), | |
987 | DESC_ENTRY(ZEBRA_HELLO), | |
988 | DESC_ENTRY(ZEBRA_NEXTHOP_REGISTER), | |
989 | DESC_ENTRY(ZEBRA_NEXTHOP_UNREGISTER), | |
990 | DESC_ENTRY(ZEBRA_NEXTHOP_UPDATE), | |
991 | DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_ADD), | |
992 | DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE), | |
993 | DESC_ENTRY(ZEBRA_INTERFACE_BFD_DEST_UPDATE), | |
994 | DESC_ENTRY(ZEBRA_IMPORT_ROUTE_REGISTER), | |
995 | DESC_ENTRY(ZEBRA_IMPORT_ROUTE_UNREGISTER), | |
996 | DESC_ENTRY(ZEBRA_IMPORT_CHECK_UPDATE), | |
997 | DESC_ENTRY(ZEBRA_BFD_DEST_REGISTER), | |
998 | DESC_ENTRY(ZEBRA_BFD_DEST_DEREGISTER), | |
999 | DESC_ENTRY(ZEBRA_BFD_DEST_UPDATE), | |
1000 | DESC_ENTRY(ZEBRA_BFD_DEST_REPLAY), | |
1001 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_ADD), | |
1002 | DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_DEL), | |
1003 | DESC_ENTRY(ZEBRA_VRF_UNREGISTER), | |
1004 | DESC_ENTRY(ZEBRA_VRF_ADD), | |
1005 | DESC_ENTRY(ZEBRA_VRF_DELETE), | |
1006 | DESC_ENTRY(ZEBRA_VRF_LABEL), | |
1007 | DESC_ENTRY(ZEBRA_INTERFACE_VRF_UPDATE), | |
1008 | DESC_ENTRY(ZEBRA_BFD_CLIENT_REGISTER), | |
1009 | DESC_ENTRY(ZEBRA_INTERFACE_ENABLE_RADV), | |
1010 | DESC_ENTRY(ZEBRA_INTERFACE_DISABLE_RADV), | |
1011 | DESC_ENTRY(ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB), | |
1012 | DESC_ENTRY(ZEBRA_INTERFACE_LINK_PARAMS), | |
1013 | DESC_ENTRY(ZEBRA_MPLS_LABELS_ADD), | |
1014 | DESC_ENTRY(ZEBRA_MPLS_LABELS_DELETE), | |
1015 | DESC_ENTRY(ZEBRA_IPMR_ROUTE_STATS), | |
1016 | DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT), | |
1017 | DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT_ASYNC), | |
1018 | DESC_ENTRY(ZEBRA_GET_LABEL_CHUNK), | |
1019 | DESC_ENTRY(ZEBRA_RELEASE_LABEL_CHUNK), | |
1020 | DESC_ENTRY(ZEBRA_ADVERTISE_ALL_VNI), | |
1021 | DESC_ENTRY(ZEBRA_ADVERTISE_DEFAULT_GW), | |
1022 | DESC_ENTRY(ZEBRA_ADVERTISE_SUBNET), | |
1023 | DESC_ENTRY(ZEBRA_LOCAL_ES_ADD), | |
1024 | DESC_ENTRY(ZEBRA_LOCAL_ES_DEL), | |
1025 | DESC_ENTRY(ZEBRA_VNI_ADD), | |
1026 | DESC_ENTRY(ZEBRA_VNI_DEL), | |
1027 | DESC_ENTRY(ZEBRA_L3VNI_ADD), | |
1028 | DESC_ENTRY(ZEBRA_L3VNI_DEL), | |
1029 | DESC_ENTRY(ZEBRA_REMOTE_VTEP_ADD), | |
1030 | DESC_ENTRY(ZEBRA_REMOTE_VTEP_DEL), | |
1031 | DESC_ENTRY(ZEBRA_MACIP_ADD), | |
1032 | DESC_ENTRY(ZEBRA_MACIP_DEL), | |
1033 | DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_ADD), | |
1034 | DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_DEL), | |
1035 | DESC_ENTRY(ZEBRA_REMOTE_MACIP_ADD), | |
1036 | DESC_ENTRY(ZEBRA_REMOTE_MACIP_DEL), | |
1037 | DESC_ENTRY(ZEBRA_DUPLICATE_ADDR_DETECTION), | |
1038 | DESC_ENTRY(ZEBRA_PW_ADD), | |
1039 | DESC_ENTRY(ZEBRA_PW_DELETE), | |
1040 | DESC_ENTRY(ZEBRA_PW_SET), | |
1041 | DESC_ENTRY(ZEBRA_PW_UNSET), | |
1042 | DESC_ENTRY(ZEBRA_PW_STATUS_UPDATE), | |
1043 | DESC_ENTRY(ZEBRA_RULE_ADD), | |
1044 | DESC_ENTRY(ZEBRA_RULE_DELETE), | |
1045 | DESC_ENTRY(ZEBRA_RULE_NOTIFY_OWNER), | |
1046 | DESC_ENTRY(ZEBRA_TABLE_MANAGER_CONNECT), | |
1047 | DESC_ENTRY(ZEBRA_GET_TABLE_CHUNK), | |
1048 | DESC_ENTRY(ZEBRA_RELEASE_TABLE_CHUNK), | |
1049 | DESC_ENTRY(ZEBRA_IPSET_CREATE), | |
1050 | DESC_ENTRY(ZEBRA_IPSET_DESTROY), | |
1051 | DESC_ENTRY(ZEBRA_IPSET_ENTRY_ADD), | |
1052 | DESC_ENTRY(ZEBRA_IPSET_ENTRY_DELETE), | |
1053 | DESC_ENTRY(ZEBRA_VXLAN_FLOOD_CONTROL), | |
1054 | }; | |
1055 | #undef DESC_ENTRY | |
1056 | ||
1057 | static const struct zebra_desc_table unknown = {0, "unknown", '?'}; | |
1058 | ||
1059 | static const struct zebra_desc_table *zroute_lookup(unsigned int zroute) | |
1060 | { | |
1061 | unsigned int i; | |
1062 | ||
1063 | if (zroute >= array_size(route_types)) { | |
1064 | flog_err(EC_LIB_DEVELOPMENT, "unknown zebra route type: %u", | |
1065 | zroute); | |
1066 | return &unknown; | |
1067 | } | |
1068 | if (zroute == route_types[zroute].type) | |
1069 | return &route_types[zroute]; | |
1070 | for (i = 0; i < array_size(route_types); i++) { | |
1071 | if (zroute == route_types[i].type) { | |
1072 | zlog_warn( | |
1073 | "internal error: route type table out of order " | |
1074 | "while searching for %u, please notify developers", | |
1075 | zroute); | |
1076 | return &route_types[i]; | |
1077 | } | |
1078 | } | |
1079 | flog_err(EC_LIB_DEVELOPMENT, | |
1080 | "internal error: cannot find route type %u in table!", zroute); | |
1081 | return &unknown; | |
1082 | } | |
1083 | ||
1084 | const char *zebra_route_string(unsigned int zroute) | |
1085 | { | |
1086 | return zroute_lookup(zroute)->string; | |
1087 | } | |
1088 | ||
1089 | char zebra_route_char(unsigned int zroute) | |
1090 | { | |
1091 | return zroute_lookup(zroute)->chr; | |
1092 | } | |
1093 | ||
1094 | const char *zserv_command_string(unsigned int command) | |
1095 | { | |
1096 | if (command >= array_size(command_types)) { | |
1097 | flog_err(EC_LIB_DEVELOPMENT, "unknown zserv command type: %u", | |
1098 | command); | |
1099 | return unknown.string; | |
1100 | } | |
1101 | return command_types[command].string; | |
1102 | } | |
1103 | ||
1104 | int proto_name2num(const char *s) | |
1105 | { | |
1106 | unsigned i; | |
1107 | ||
1108 | for (i = 0; i < array_size(route_types); ++i) | |
1109 | if (strcasecmp(s, route_types[i].string) == 0) | |
1110 | return route_types[i].type; | |
1111 | return -1; | |
1112 | } | |
1113 | ||
1114 | int proto_redistnum(int afi, const char *s) | |
1115 | { | |
1116 | if (!s) | |
1117 | return -1; | |
1118 | ||
1119 | if (afi == AFI_IP) { | |
1120 | if (strmatch(s, "kernel")) | |
1121 | return ZEBRA_ROUTE_KERNEL; | |
1122 | else if (strmatch(s, "connected")) | |
1123 | return ZEBRA_ROUTE_CONNECT; | |
1124 | else if (strmatch(s, "static")) | |
1125 | return ZEBRA_ROUTE_STATIC; | |
1126 | else if (strmatch(s, "rip")) | |
1127 | return ZEBRA_ROUTE_RIP; | |
1128 | else if (strmatch(s, "eigrp")) | |
1129 | return ZEBRA_ROUTE_EIGRP; | |
1130 | else if (strmatch(s, "ospf")) | |
1131 | return ZEBRA_ROUTE_OSPF; | |
1132 | else if (strmatch(s, "isis")) | |
1133 | return ZEBRA_ROUTE_ISIS; | |
1134 | else if (strmatch(s, "bgp")) | |
1135 | return ZEBRA_ROUTE_BGP; | |
1136 | else if (strmatch(s, "table")) | |
1137 | return ZEBRA_ROUTE_TABLE; | |
1138 | else if (strmatch(s, "vnc")) | |
1139 | return ZEBRA_ROUTE_VNC; | |
1140 | else if (strmatch(s, "vnc-direct")) | |
1141 | return ZEBRA_ROUTE_VNC_DIRECT; | |
1142 | else if (strmatch(s, "nhrp")) | |
1143 | return ZEBRA_ROUTE_NHRP; | |
1144 | else if (strmatch(s, "babel")) | |
1145 | return ZEBRA_ROUTE_BABEL; | |
1146 | else if (strmatch(s, "sharp")) | |
1147 | return ZEBRA_ROUTE_SHARP; | |
1148 | else if (strmatch(s, "openfabric")) | |
1149 | return ZEBRA_ROUTE_OPENFABRIC; | |
1150 | } | |
1151 | if (afi == AFI_IP6) { | |
1152 | if (strmatch(s, "kernel")) | |
1153 | return ZEBRA_ROUTE_KERNEL; | |
1154 | else if (strmatch(s, "connected")) | |
1155 | return ZEBRA_ROUTE_CONNECT; | |
1156 | else if (strmatch(s, "static")) | |
1157 | return ZEBRA_ROUTE_STATIC; | |
1158 | else if (strmatch(s, "ripng")) | |
1159 | return ZEBRA_ROUTE_RIPNG; | |
1160 | else if (strmatch(s, "ospf6")) | |
1161 | return ZEBRA_ROUTE_OSPF6; | |
1162 | else if (strmatch(s, "isis")) | |
1163 | return ZEBRA_ROUTE_ISIS; | |
1164 | else if (strmatch(s, "bgp")) | |
1165 | return ZEBRA_ROUTE_BGP; | |
1166 | else if (strmatch(s, "table")) | |
1167 | return ZEBRA_ROUTE_TABLE; | |
1168 | else if (strmatch(s, "vnc")) | |
1169 | return ZEBRA_ROUTE_VNC; | |
1170 | else if (strmatch(s, "vnc-direct")) | |
1171 | return ZEBRA_ROUTE_VNC_DIRECT; | |
1172 | else if (strmatch(s, "nhrp")) | |
1173 | return ZEBRA_ROUTE_NHRP; | |
1174 | else if (strmatch(s, "babel")) | |
1175 | return ZEBRA_ROUTE_BABEL; | |
1176 | else if (strmatch(s, "sharp")) | |
1177 | return ZEBRA_ROUTE_SHARP; | |
1178 | else if (strmatch(s, "openfabric")) | |
1179 | return ZEBRA_ROUTE_OPENFABRIC; | |
1180 | } | |
1181 | return -1; | |
1182 | } | |
1183 | ||
1184 | void zlog_hexdump(const void *mem, unsigned int len) | |
1185 | { | |
1186 | unsigned long i = 0; | |
1187 | unsigned int j = 0; | |
1188 | unsigned int columns = 8; | |
1189 | /* | |
1190 | * 19 bytes for 0xADDRESS: | |
1191 | * 24 bytes for data; 2 chars plus a space per data byte | |
1192 | * 1 byte for space | |
1193 | * 8 bytes for ASCII representation | |
1194 | * 1 byte for a newline | |
1195 | * ===================== | |
1196 | * 53 bytes per 8 bytes of data | |
1197 | * 1 byte for null term | |
1198 | */ | |
1199 | size_t bs = ((len / 8) + 1) * 53 + 1; | |
1200 | char buf[bs]; | |
1201 | char *s = buf; | |
1202 | ||
1203 | memset(buf, 0, sizeof(buf)); | |
1204 | ||
1205 | for (i = 0; i < len + ((len % columns) ? (columns - len % columns) : 0); | |
1206 | i++) { | |
1207 | /* print offset */ | |
1208 | if (i % columns == 0) | |
1209 | s += snprintf(s, bs - (s - buf), | |
1210 | "0x%016lx: ", (unsigned long)mem + i); | |
1211 | ||
1212 | /* print hex data */ | |
1213 | if (i < len) | |
1214 | s += snprintf(s, bs - (s - buf), "%02x ", | |
1215 | 0xFF & ((const char *)mem)[i]); | |
1216 | ||
1217 | /* end of block, just aligning for ASCII dump */ | |
1218 | else | |
1219 | s += snprintf(s, bs - (s - buf), " "); | |
1220 | ||
1221 | /* print ASCII dump */ | |
1222 | if (i % columns == (columns - 1)) { | |
1223 | for (j = i - (columns - 1); j <= i; j++) { | |
1224 | /* end of block not really printing */ | |
1225 | if (j >= len) | |
1226 | s += snprintf(s, bs - (s - buf), " "); | |
1227 | else if (isprint((int)((const char *)mem)[j])) | |
1228 | s += snprintf( | |
1229 | s, bs - (s - buf), "%c", | |
1230 | 0xFF & ((const char *)mem)[j]); | |
1231 | else /* other char */ | |
1232 | s += snprintf(s, bs - (s - buf), "."); | |
1233 | } | |
1234 | s += snprintf(s, bs - (s - buf), "\n"); | |
1235 | } | |
1236 | } | |
1237 | zlog_debug("\n%s", buf); | |
1238 | } | |
1239 | ||
1240 | const char *zlog_sanitize(char *buf, size_t bufsz, const void *in, size_t inlen) | |
1241 | { | |
1242 | const char *inbuf = in; | |
1243 | char *pos = buf, *end = buf + bufsz; | |
1244 | const char *iend = inbuf + inlen; | |
1245 | ||
1246 | memset(buf, 0, bufsz); | |
1247 | for (; inbuf < iend; inbuf++) { | |
1248 | /* don't write partial escape sequence */ | |
1249 | if (end - pos < 5) | |
1250 | break; | |
1251 | ||
1252 | if (*inbuf == '\n') | |
1253 | snprintf(pos, end - pos, "\\n"); | |
1254 | else if (*inbuf == '\r') | |
1255 | snprintf(pos, end - pos, "\\r"); | |
1256 | else if (*inbuf == '\t') | |
1257 | snprintf(pos, end - pos, "\\t"); | |
1258 | else if (*inbuf < ' ' || *inbuf == '"' || *inbuf >= 127) | |
1259 | snprintf(pos, end - pos, "\\x%02hhx", *inbuf); | |
1260 | else | |
1261 | *pos = *inbuf; | |
1262 | ||
1263 | pos += strlen(pos); | |
1264 | } | |
1265 | return buf; | |
1266 | } |