Line data Source code
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 "memory.h"
29 : #include "command.h"
30 : #include "lib_errors.h"
31 : #include "lib/hook.h"
32 : #include "printfrr.h"
33 : #include "frr_pthread.h"
34 :
35 : #ifdef HAVE_LIBUNWIND
36 : #define UNW_LOCAL_ONLY
37 : #include <libunwind.h>
38 : #include <dlfcn.h>
39 : #endif
40 :
41 : /**
42 : * Looks up a message in a message list by key.
43 : *
44 : * If the message is not found, returns the provided error message.
45 : *
46 : * Terminates when it hits a struct message that's all zeros.
47 : *
48 : * @param mz the message list
49 : * @param kz the message key
50 : * @param nf the message to return if not found
51 : * @return the message
52 : */
53 10 : const char *lookup_msg(const struct message *mz, int kz, const char *nf)
54 : {
55 10 : static struct message nt = {0};
56 10 : const char *rz = nf ? nf : "(no message found)";
57 10 : const struct message *pnt;
58 170 : for (pnt = mz; memcmp(pnt, &nt, sizeof(struct message)); pnt++)
59 170 : if (pnt->key == kz) {
60 10 : rz = pnt->str ? pnt->str : rz;
61 : break;
62 : }
63 10 : return rz;
64 : }
65 :
66 : /* For time string format. */
67 10 : size_t frr_timestamp(int timestamp_precision, char *buf, size_t buflen)
68 : {
69 10 : static struct {
70 : time_t last;
71 : size_t len;
72 : char buf[28];
73 : } cache;
74 10 : struct timeval clock;
75 :
76 10 : gettimeofday(&clock, NULL);
77 :
78 : /* first, we update the cache if the time has changed */
79 10 : if (cache.last != clock.tv_sec) {
80 3 : struct tm tm;
81 3 : cache.last = clock.tv_sec;
82 3 : localtime_r(&cache.last, &tm);
83 3 : cache.len = strftime(cache.buf, sizeof(cache.buf),
84 : "%Y/%m/%d %H:%M:%S", &tm);
85 : }
86 : /* note: it's not worth caching the subsecond part, because
87 : chances are that back-to-back calls are not sufficiently close
88 : together
89 : for the clock not to have ticked forward */
90 :
91 10 : if (buflen > cache.len) {
92 10 : memcpy(buf, cache.buf, cache.len);
93 10 : if ((timestamp_precision > 0)
94 10 : && (buflen > cache.len + 1 + timestamp_precision)) {
95 : /* should we worry about locale issues? */
96 10 : static const int divisor[] = {0, 100000, 10000, 1000,
97 : 100, 10, 1};
98 10 : int prec;
99 10 : char *p = buf + cache.len + 1
100 10 : + (prec = timestamp_precision);
101 10 : *p-- = '\0';
102 10 : while (prec > 6)
103 : /* this is unlikely to happen, but protect anyway */
104 : {
105 0 : *p-- = '0';
106 0 : prec--;
107 : }
108 10 : clock.tv_usec /= divisor[prec];
109 20 : do {
110 20 : *p-- = '0' + (clock.tv_usec % 10);
111 20 : clock.tv_usec /= 10;
112 20 : } while (--prec > 0);
113 10 : *p = '.';
114 10 : return cache.len + 1 + timestamp_precision;
115 : }
116 0 : buf[cache.len] = '\0';
117 0 : return cache.len;
118 : }
119 0 : if (buflen > 0)
120 0 : buf[0] = '\0';
121 : return 0;
122 : }
123 :
124 : /*
125 : * crash handling
126 : *
127 : * NB: only AS-Safe (async-signal) functions can be used here!
128 : */
129 :
130 : /* Note: the goal here is to use only async-signal-safe functions. */
131 0 : void zlog_signal(int signo, const char *action, void *siginfo_v,
132 : void *program_counter)
133 : {
134 0 : siginfo_t *siginfo = siginfo_v;
135 0 : time_t now;
136 0 : char buf[sizeof("DEFAULT: Received signal S at T (si_addr 0xP, PC 0xP); aborting...")
137 : + 100];
138 0 : struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) };
139 :
140 0 : time(&now);
141 :
142 0 : bprintfrr(&fb, "Received signal %d at %lld", signo, (long long)now);
143 0 : if (program_counter)
144 0 : bprintfrr(&fb, " (si_addr 0x%tx, PC 0x%tx)",
145 0 : (ptrdiff_t)siginfo->si_addr,
146 : (ptrdiff_t)program_counter);
147 : else
148 0 : bprintfrr(&fb, " (si_addr 0x%tx)",
149 0 : (ptrdiff_t)siginfo->si_addr);
150 0 : bprintfrr(&fb, "; %s\n", action);
151 :
152 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
153 :
154 0 : zlog_backtrace_sigsafe(LOG_CRIT, program_counter);
155 :
156 0 : fb.pos = buf;
157 :
158 0 : struct thread *tc;
159 0 : tc = pthread_getspecific(thread_current);
160 :
161 0 : if (!tc)
162 0 : bprintfrr(&fb, "no thread information available\n");
163 : else
164 0 : bprintfrr(&fb, "in thread %s scheduled from %s:%d %s()\n",
165 0 : tc->xref->funcname, tc->xref->xref.file,
166 0 : tc->xref->xref.line, tc->xref->xref.func);
167 :
168 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
169 0 : }
170 :
171 : /* Log a backtrace using only async-signal-safe functions.
172 : Needs to be enhanced to support syslog logging. */
173 0 : void zlog_backtrace_sigsafe(int priority, void *program_counter)
174 : {
175 : #ifdef HAVE_LIBUNWIND
176 0 : char buf[256];
177 0 : struct fbuf fb = { .buf = buf, .len = sizeof(buf) };
178 0 : unw_cursor_t cursor;
179 0 : unw_context_t uc;
180 0 : unw_word_t ip, off, sp;
181 0 : Dl_info dlinfo;
182 :
183 0 : memset(&uc, 0, sizeof(uc));
184 0 : memset(&cursor, 0, sizeof(cursor));
185 :
186 0 : unw_getcontext(&uc);
187 0 : unw_init_local(&cursor, &uc);
188 0 : while (unw_step(&cursor) > 0) {
189 0 : char name[128] = "?";
190 :
191 0 : unw_get_reg(&cursor, UNW_REG_IP, &ip);
192 0 : unw_get_reg(&cursor, UNW_REG_SP, &sp);
193 :
194 0 : if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off))
195 0 : snprintfrr(name, sizeof(name), "%s+%#lx",
196 : buf, (long)off);
197 :
198 0 : fb.pos = buf;
199 0 : if (unw_is_signal_frame(&cursor))
200 0 : bprintfrr(&fb, " ---- signal ----\n");
201 0 : bprintfrr(&fb, "%-30s %16lx %16lx", name, (long)ip, (long)sp);
202 0 : if (dladdr((void *)ip, &dlinfo))
203 0 : bprintfrr(&fb, " %s (mapped at %p)",
204 : dlinfo.dli_fname, dlinfo.dli_fbase);
205 0 : bprintfrr(&fb, "\n");
206 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
207 : }
208 : #elif defined(HAVE_GLIBC_BACKTRACE)
209 : void *array[64];
210 : int size, i;
211 : char buf[128];
212 : struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) };
213 : char **bt = NULL;
214 :
215 : size = backtrace(array, array_size(array));
216 : if (size <= 0 || (size_t)size > array_size(array))
217 : return;
218 :
219 : bprintfrr(&fb, "Backtrace for %d stack frames:", size);
220 : zlog_sigsafe(fb.pos, fb.buf - fb.pos);
221 :
222 : bt = backtrace_symbols(array, size);
223 :
224 : for (i = 0; i < size; i++) {
225 : fb.pos = buf;
226 : if (bt)
227 : bprintfrr(&fb, "%s", bt[i]);
228 : else
229 : bprintfrr(&fb, "[bt %d] 0x%tx", i,
230 : (ptrdiff_t)(array[i]));
231 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
232 : }
233 : if (bt)
234 : free(bt);
235 : #endif /* HAVE_STRACK_TRACE */
236 0 : }
237 :
238 0 : void zlog_backtrace(int priority)
239 : {
240 : #ifdef HAVE_LIBUNWIND
241 0 : char buf[100];
242 0 : unw_cursor_t cursor = {};
243 0 : unw_context_t uc;
244 0 : unw_word_t ip, off, sp;
245 0 : Dl_info dlinfo;
246 :
247 0 : unw_getcontext(&uc);
248 0 : unw_init_local(&cursor, &uc);
249 0 : zlog(priority, "Backtrace:");
250 0 : while (unw_step(&cursor) > 0) {
251 0 : char name[128] = "?";
252 :
253 0 : unw_get_reg(&cursor, UNW_REG_IP, &ip);
254 0 : unw_get_reg(&cursor, UNW_REG_SP, &sp);
255 :
256 0 : if (unw_is_signal_frame(&cursor))
257 0 : zlog(priority, " ---- signal ----");
258 :
259 0 : if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off))
260 0 : snprintf(name, sizeof(name), "%s+%#lx",
261 : buf, (long)off);
262 :
263 0 : if (dladdr((void *)ip, &dlinfo))
264 0 : zlog(priority, "%-30s %16lx %16lx %s (mapped at %p)",
265 : name, (long)ip, (long)sp,
266 : dlinfo.dli_fname, dlinfo.dli_fbase);
267 : else
268 0 : zlog(priority, "%-30s %16lx %16lx",
269 : name, (long)ip, (long)sp);
270 : }
271 : #elif defined(HAVE_GLIBC_BACKTRACE)
272 : void *array[20];
273 : int size, i;
274 : char **strings;
275 :
276 : size = backtrace(array, array_size(array));
277 : if (size <= 0 || (size_t)size > array_size(array)) {
278 : flog_err_sys(
279 : EC_LIB_SYSTEM_CALL,
280 : "Cannot get backtrace, returned invalid # of frames %d (valid range is between 1 and %lu)",
281 : size, (unsigned long)(array_size(array)));
282 : return;
283 : }
284 : zlog(priority, "Backtrace for %d stack frames:", size);
285 : if (!(strings = backtrace_symbols(array, size))) {
286 : flog_err_sys(EC_LIB_SYSTEM_CALL,
287 : "Cannot get backtrace symbols (out of memory?)");
288 : for (i = 0; i < size; i++)
289 : zlog(priority, "[bt %d] %p", i, array[i]);
290 : } else {
291 : for (i = 0; i < size; i++)
292 : zlog(priority, "[bt %d] %s", i, strings[i]);
293 : free(strings);
294 : }
295 : #else /* !HAVE_GLIBC_BACKTRACE && !HAVE_LIBUNWIND */
296 : zlog(priority, "No backtrace available on this platform.");
297 : #endif
298 0 : }
299 :
300 0 : void zlog_thread_info(int log_level)
301 : {
302 0 : struct thread *tc;
303 0 : tc = pthread_getspecific(thread_current);
304 :
305 0 : if (tc)
306 0 : zlog(log_level,
307 : "Current thread function %s, scheduled from file %s, line %u in %s()",
308 0 : tc->xref->funcname, tc->xref->xref.file,
309 0 : tc->xref->xref.line, tc->xref->xref.func);
310 : else
311 0 : zlog(log_level, "Current thread not known/applicable");
312 0 : }
313 :
314 0 : void memory_oom(size_t size, const char *name)
315 : {
316 0 : zlog(LOG_CRIT,
317 : "out of memory: failed to allocate %zu bytes for %s object",
318 : size, name);
319 0 : zlog_backtrace(LOG_CRIT);
320 0 : log_memstats(stderr, "log");
321 0 : abort();
322 : }
323 :
324 : /* Wrapper around strerror to handle case where it returns NULL. */
325 10 : const char *safe_strerror(int errnum)
326 : {
327 10 : const char *s = strerror(errnum);
328 10 : return (s != NULL) ? s : "Unknown error";
329 : }
330 :
331 : #define DESC_ENTRY(T) [(T)] = { (T), (#T), '\0' }
332 : static const struct zebra_desc_table command_types[] = {
333 : DESC_ENTRY(ZEBRA_INTERFACE_ADD),
334 : DESC_ENTRY(ZEBRA_INTERFACE_DELETE),
335 : DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_ADD),
336 : DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_DELETE),
337 : DESC_ENTRY(ZEBRA_INTERFACE_UP),
338 : DESC_ENTRY(ZEBRA_INTERFACE_DOWN),
339 : DESC_ENTRY(ZEBRA_INTERFACE_SET_MASTER),
340 : DESC_ENTRY(ZEBRA_INTERFACE_SET_PROTODOWN),
341 : DESC_ENTRY(ZEBRA_ROUTE_ADD),
342 : DESC_ENTRY(ZEBRA_ROUTE_DELETE),
343 : DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_OWNER),
344 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ADD),
345 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DELETE),
346 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_ADD),
347 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE),
348 : DESC_ENTRY(ZEBRA_ROUTER_ID_ADD),
349 : DESC_ENTRY(ZEBRA_ROUTER_ID_DELETE),
350 : DESC_ENTRY(ZEBRA_ROUTER_ID_UPDATE),
351 : DESC_ENTRY(ZEBRA_HELLO),
352 : DESC_ENTRY(ZEBRA_CAPABILITIES),
353 : DESC_ENTRY(ZEBRA_NEXTHOP_REGISTER),
354 : DESC_ENTRY(ZEBRA_NEXTHOP_UNREGISTER),
355 : DESC_ENTRY(ZEBRA_NEXTHOP_UPDATE),
356 : DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_ADD),
357 : DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE),
358 : DESC_ENTRY(ZEBRA_INTERFACE_BFD_DEST_UPDATE),
359 : DESC_ENTRY(ZEBRA_BFD_DEST_REGISTER),
360 : DESC_ENTRY(ZEBRA_BFD_DEST_DEREGISTER),
361 : DESC_ENTRY(ZEBRA_BFD_DEST_UPDATE),
362 : DESC_ENTRY(ZEBRA_BFD_DEST_REPLAY),
363 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_ADD),
364 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_DEL),
365 : DESC_ENTRY(ZEBRA_VRF_UNREGISTER),
366 : DESC_ENTRY(ZEBRA_VRF_ADD),
367 : DESC_ENTRY(ZEBRA_VRF_DELETE),
368 : DESC_ENTRY(ZEBRA_VRF_LABEL),
369 : DESC_ENTRY(ZEBRA_INTERFACE_VRF_UPDATE),
370 : DESC_ENTRY(ZEBRA_BFD_CLIENT_REGISTER),
371 : DESC_ENTRY(ZEBRA_BFD_CLIENT_DEREGISTER),
372 : DESC_ENTRY(ZEBRA_INTERFACE_ENABLE_RADV),
373 : DESC_ENTRY(ZEBRA_INTERFACE_DISABLE_RADV),
374 : DESC_ENTRY(ZEBRA_NEXTHOP_LOOKUP_MRIB),
375 : DESC_ENTRY(ZEBRA_INTERFACE_LINK_PARAMS),
376 : DESC_ENTRY(ZEBRA_MPLS_LABELS_ADD),
377 : DESC_ENTRY(ZEBRA_MPLS_LABELS_DELETE),
378 : DESC_ENTRY(ZEBRA_MPLS_LABELS_REPLACE),
379 : DESC_ENTRY(ZEBRA_SR_POLICY_SET),
380 : DESC_ENTRY(ZEBRA_SR_POLICY_DELETE),
381 : DESC_ENTRY(ZEBRA_SR_POLICY_NOTIFY_STATUS),
382 : DESC_ENTRY(ZEBRA_IPMR_ROUTE_STATS),
383 : DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT),
384 : DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT_ASYNC),
385 : DESC_ENTRY(ZEBRA_GET_LABEL_CHUNK),
386 : DESC_ENTRY(ZEBRA_RELEASE_LABEL_CHUNK),
387 : DESC_ENTRY(ZEBRA_FEC_REGISTER),
388 : DESC_ENTRY(ZEBRA_FEC_UNREGISTER),
389 : DESC_ENTRY(ZEBRA_FEC_UPDATE),
390 : DESC_ENTRY(ZEBRA_ADVERTISE_DEFAULT_GW),
391 : DESC_ENTRY(ZEBRA_ADVERTISE_SVI_MACIP),
392 : DESC_ENTRY(ZEBRA_ADVERTISE_SUBNET),
393 : DESC_ENTRY(ZEBRA_ADVERTISE_ALL_VNI),
394 : DESC_ENTRY(ZEBRA_LOCAL_ES_ADD),
395 : DESC_ENTRY(ZEBRA_LOCAL_ES_DEL),
396 : DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_ADD),
397 : DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_DEL),
398 : DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_ADD),
399 : DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_DEL),
400 : DESC_ENTRY(ZEBRA_VNI_ADD),
401 : DESC_ENTRY(ZEBRA_VNI_DEL),
402 : DESC_ENTRY(ZEBRA_L3VNI_ADD),
403 : DESC_ENTRY(ZEBRA_L3VNI_DEL),
404 : DESC_ENTRY(ZEBRA_REMOTE_VTEP_ADD),
405 : DESC_ENTRY(ZEBRA_REMOTE_VTEP_DEL),
406 : DESC_ENTRY(ZEBRA_MACIP_ADD),
407 : DESC_ENTRY(ZEBRA_MACIP_DEL),
408 : DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_ADD),
409 : DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_DEL),
410 : DESC_ENTRY(ZEBRA_REMOTE_MACIP_ADD),
411 : DESC_ENTRY(ZEBRA_REMOTE_MACIP_DEL),
412 : DESC_ENTRY(ZEBRA_DUPLICATE_ADDR_DETECTION),
413 : DESC_ENTRY(ZEBRA_PW_ADD),
414 : DESC_ENTRY(ZEBRA_PW_DELETE),
415 : DESC_ENTRY(ZEBRA_PW_SET),
416 : DESC_ENTRY(ZEBRA_PW_UNSET),
417 : DESC_ENTRY(ZEBRA_PW_STATUS_UPDATE),
418 : DESC_ENTRY(ZEBRA_RULE_ADD),
419 : DESC_ENTRY(ZEBRA_RULE_DELETE),
420 : DESC_ENTRY(ZEBRA_RULE_NOTIFY_OWNER),
421 : DESC_ENTRY(ZEBRA_TABLE_MANAGER_CONNECT),
422 : DESC_ENTRY(ZEBRA_GET_TABLE_CHUNK),
423 : DESC_ENTRY(ZEBRA_RELEASE_TABLE_CHUNK),
424 : DESC_ENTRY(ZEBRA_IPSET_CREATE),
425 : DESC_ENTRY(ZEBRA_IPSET_DESTROY),
426 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_ADD),
427 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_DELETE),
428 : DESC_ENTRY(ZEBRA_IPSET_NOTIFY_OWNER),
429 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_NOTIFY_OWNER),
430 : DESC_ENTRY(ZEBRA_IPTABLE_ADD),
431 : DESC_ENTRY(ZEBRA_IPTABLE_DELETE),
432 : DESC_ENTRY(ZEBRA_IPTABLE_NOTIFY_OWNER),
433 : DESC_ENTRY(ZEBRA_VXLAN_FLOOD_CONTROL),
434 : DESC_ENTRY(ZEBRA_VXLAN_SG_ADD),
435 : DESC_ENTRY(ZEBRA_VXLAN_SG_DEL),
436 : DESC_ENTRY(ZEBRA_VXLAN_SG_REPLAY),
437 : DESC_ENTRY(ZEBRA_MLAG_PROCESS_UP),
438 : DESC_ENTRY(ZEBRA_MLAG_PROCESS_DOWN),
439 : DESC_ENTRY(ZEBRA_MLAG_CLIENT_REGISTER),
440 : DESC_ENTRY(ZEBRA_MLAG_CLIENT_UNREGISTER),
441 : DESC_ENTRY(ZEBRA_MLAG_FORWARD_MSG),
442 : DESC_ENTRY(ZEBRA_NHG_ADD),
443 : DESC_ENTRY(ZEBRA_NHG_DEL),
444 : DESC_ENTRY(ZEBRA_NHG_NOTIFY_OWNER),
445 : DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_ADD),
446 : DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_DEL),
447 : DESC_ENTRY(ZEBRA_SRV6_LOCATOR_ADD),
448 : DESC_ENTRY(ZEBRA_SRV6_LOCATOR_DELETE),
449 : DESC_ENTRY(ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK),
450 : DESC_ENTRY(ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK),
451 : DESC_ENTRY(ZEBRA_ERROR),
452 : DESC_ENTRY(ZEBRA_CLIENT_CAPABILITIES),
453 : DESC_ENTRY(ZEBRA_OPAQUE_MESSAGE),
454 : DESC_ENTRY(ZEBRA_OPAQUE_REGISTER),
455 : DESC_ENTRY(ZEBRA_OPAQUE_UNREGISTER),
456 : DESC_ENTRY(ZEBRA_NEIGH_DISCOVER),
457 : DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_REQUEST),
458 : DESC_ENTRY(ZEBRA_CLIENT_CLOSE_NOTIFY),
459 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_ADDED),
460 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_REMOVED),
461 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_GET),
462 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_REGISTER),
463 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_UNREGISTER),
464 : DESC_ENTRY(ZEBRA_NEIGH_IP_ADD),
465 : DESC_ENTRY(ZEBRA_NEIGH_IP_DEL),
466 : DESC_ENTRY(ZEBRA_CONFIGURE_ARP),
467 : DESC_ENTRY(ZEBRA_GRE_GET),
468 : DESC_ENTRY(ZEBRA_GRE_UPDATE),
469 : DESC_ENTRY(ZEBRA_GRE_SOURCE_SET),
470 : DESC_ENTRY(ZEBRA_TC_QDISC_INSTALL),
471 : DESC_ENTRY(ZEBRA_TC_QDISC_UNINSTALL),
472 : DESC_ENTRY(ZEBRA_TC_CLASS_ADD),
473 : DESC_ENTRY(ZEBRA_TC_CLASS_DELETE),
474 : DESC_ENTRY(ZEBRA_TC_FILTER_ADD),
475 : DESC_ENTRY(ZEBRA_TC_FILTER_DELETE)};
476 : #undef DESC_ENTRY
477 :
478 : static const struct zebra_desc_table unknown = {0, "unknown", '?'};
479 :
480 24 : static const struct zebra_desc_table *zroute_lookup(unsigned int zroute)
481 : {
482 24 : unsigned int i;
483 :
484 24 : if (zroute >= array_size(route_types)) {
485 0 : flog_err(EC_LIB_DEVELOPMENT, "unknown zebra route type: %u",
486 : zroute);
487 0 : return &unknown;
488 : }
489 24 : if (zroute == route_types[zroute].type)
490 24 : return &route_types[zroute];
491 0 : for (i = 0; i < array_size(route_types); i++) {
492 0 : if (zroute == route_types[i].type) {
493 0 : zlog_warn(
494 : "internal error: route type table out of order while searching for %u, please notify developers",
495 : zroute);
496 0 : return &route_types[i];
497 : }
498 : }
499 0 : flog_err(EC_LIB_DEVELOPMENT,
500 : "internal error: cannot find route type %u in table!", zroute);
501 0 : return &unknown;
502 : }
503 :
504 24 : const char *zebra_route_string(unsigned int zroute)
505 : {
506 24 : return zroute_lookup(zroute)->string;
507 : }
508 :
509 0 : char zebra_route_char(unsigned int zroute)
510 : {
511 0 : return zroute_lookup(zroute)->chr;
512 : }
513 :
514 0 : const char *zserv_command_string(unsigned int command)
515 : {
516 0 : if (command >= array_size(command_types)) {
517 0 : flog_err(EC_LIB_DEVELOPMENT, "unknown zserv command type: %u",
518 : command);
519 0 : return unknown.string;
520 : }
521 0 : return command_types[command].string;
522 : }
523 :
524 0 : int proto_name2num(const char *s)
525 : {
526 0 : unsigned i;
527 :
528 0 : for (i = 0; i < array_size(route_types); ++i)
529 0 : if (strcasecmp(s, route_types[i].string) == 0)
530 0 : return route_types[i].type;
531 : return -1;
532 : }
533 :
534 1 : int proto_redistnum(int afi, const char *s)
535 : {
536 1 : if (!s)
537 : return -1;
538 :
539 1 : if (afi == AFI_IP) {
540 1 : if (strmatch(s, "kernel"))
541 : return ZEBRA_ROUTE_KERNEL;
542 1 : else if (strmatch(s, "connected"))
543 : return ZEBRA_ROUTE_CONNECT;
544 0 : else if (strmatch(s, "static"))
545 : return ZEBRA_ROUTE_STATIC;
546 0 : else if (strmatch(s, "rip"))
547 : return ZEBRA_ROUTE_RIP;
548 0 : else if (strmatch(s, "eigrp"))
549 : return ZEBRA_ROUTE_EIGRP;
550 0 : else if (strmatch(s, "ospf"))
551 : return ZEBRA_ROUTE_OSPF;
552 0 : else if (strmatch(s, "isis"))
553 : return ZEBRA_ROUTE_ISIS;
554 0 : else if (strmatch(s, "bgp"))
555 : return ZEBRA_ROUTE_BGP;
556 0 : else if (strmatch(s, "table"))
557 : return ZEBRA_ROUTE_TABLE;
558 0 : else if (strmatch(s, "vnc"))
559 : return ZEBRA_ROUTE_VNC;
560 0 : else if (strmatch(s, "vnc-direct"))
561 : return ZEBRA_ROUTE_VNC_DIRECT;
562 0 : else if (strmatch(s, "nhrp"))
563 : return ZEBRA_ROUTE_NHRP;
564 0 : else if (strmatch(s, "babel"))
565 : return ZEBRA_ROUTE_BABEL;
566 0 : else if (strmatch(s, "sharp"))
567 : return ZEBRA_ROUTE_SHARP;
568 0 : else if (strmatch(s, "openfabric"))
569 : return ZEBRA_ROUTE_OPENFABRIC;
570 : }
571 0 : if (afi == AFI_IP6) {
572 0 : if (strmatch(s, "kernel"))
573 : return ZEBRA_ROUTE_KERNEL;
574 0 : else if (strmatch(s, "connected"))
575 : return ZEBRA_ROUTE_CONNECT;
576 0 : else if (strmatch(s, "static"))
577 : return ZEBRA_ROUTE_STATIC;
578 0 : else if (strmatch(s, "ripng"))
579 : return ZEBRA_ROUTE_RIPNG;
580 0 : else if (strmatch(s, "ospf6"))
581 : return ZEBRA_ROUTE_OSPF6;
582 0 : else if (strmatch(s, "isis"))
583 : return ZEBRA_ROUTE_ISIS;
584 0 : else if (strmatch(s, "bgp"))
585 : return ZEBRA_ROUTE_BGP;
586 0 : else if (strmatch(s, "table"))
587 : return ZEBRA_ROUTE_TABLE;
588 0 : else if (strmatch(s, "vnc"))
589 : return ZEBRA_ROUTE_VNC;
590 0 : else if (strmatch(s, "vnc-direct"))
591 : return ZEBRA_ROUTE_VNC_DIRECT;
592 0 : else if (strmatch(s, "nhrp"))
593 : return ZEBRA_ROUTE_NHRP;
594 0 : else if (strmatch(s, "babel"))
595 : return ZEBRA_ROUTE_BABEL;
596 0 : else if (strmatch(s, "sharp"))
597 : return ZEBRA_ROUTE_SHARP;
598 0 : else if (strmatch(s, "openfabric"))
599 0 : return ZEBRA_ROUTE_OPENFABRIC;
600 : }
601 : return -1;
602 : }
603 :
604 0 : void zlog_hexdump(const void *mem, size_t len)
605 : {
606 0 : char line[64];
607 0 : const uint8_t *src = mem;
608 0 : const uint8_t *end = src + len;
609 :
610 0 : if (len == 0) {
611 0 : zlog_debug("%016lx: (zero length / no data)", (long)src);
612 0 : return;
613 : }
614 :
615 0 : while (src < end) {
616 0 : struct fbuf fb = {
617 : .buf = line,
618 : .pos = line,
619 : .len = sizeof(line),
620 : };
621 0 : const uint8_t *lineend = src + 8;
622 0 : unsigned line_bytes = 0;
623 :
624 0 : bprintfrr(&fb, "%016lx: ", (long)src);
625 :
626 0 : while (src < lineend && src < end) {
627 0 : bprintfrr(&fb, "%02x ", *src++);
628 0 : line_bytes++;
629 : }
630 0 : if (line_bytes < 8)
631 0 : bprintfrr(&fb, "%*s", (8 - line_bytes) * 3, "");
632 :
633 0 : src -= line_bytes;
634 0 : while (src < lineend && src < end && fb.pos < fb.buf + fb.len) {
635 0 : uint8_t byte = *src++;
636 :
637 0 : if (isprint(byte))
638 0 : *fb.pos++ = byte;
639 : else
640 0 : *fb.pos++ = '.';
641 : }
642 :
643 0 : zlog_debug("%.*s", (int)(fb.pos - fb.buf), fb.buf);
644 : }
645 : }
646 :
647 0 : const char *zlog_sanitize(char *buf, size_t bufsz, const void *in, size_t inlen)
648 : {
649 0 : const char *inbuf = in;
650 0 : char *pos = buf, *end = buf + bufsz;
651 0 : const char *iend = inbuf + inlen;
652 :
653 0 : memset(buf, 0, bufsz);
654 0 : for (; inbuf < iend; inbuf++) {
655 : /* don't write partial escape sequence */
656 0 : if (end - pos < 5)
657 : break;
658 :
659 0 : if (*inbuf == '\n')
660 0 : snprintf(pos, end - pos, "\\n");
661 0 : else if (*inbuf == '\r')
662 0 : snprintf(pos, end - pos, "\\r");
663 0 : else if (*inbuf == '\t')
664 0 : snprintf(pos, end - pos, "\\t");
665 0 : else if (*inbuf < ' ' || *inbuf == '"' || *inbuf >= 127)
666 0 : snprintf(pos, end - pos, "\\x%02hhx", *inbuf);
667 : else
668 0 : *pos = *inbuf;
669 :
670 0 : pos += strlen(pos);
671 : }
672 0 : return buf;
673 : }
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