Line data Source code
1 : // SPDX-License-Identifier: GPL-2.0-or-later
2 : /*
3 : * Logging of zebra
4 : * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro
5 : */
6 :
7 : #define FRR_DEFINE_DESC_TABLE
8 :
9 : #include <zebra.h>
10 :
11 : #include "zclient.h"
12 : #include "log.h"
13 : #include "memory.h"
14 : #include "command.h"
15 : #include "lib_errors.h"
16 : #include "lib/hook.h"
17 : #include "printfrr.h"
18 : #include "frr_pthread.h"
19 :
20 : #ifdef HAVE_LIBUNWIND
21 : #define UNW_LOCAL_ONLY
22 : #include <libunwind.h>
23 : #include <dlfcn.h>
24 : #endif
25 :
26 : /**
27 : * Looks up a message in a message list by key.
28 : *
29 : * If the message is not found, returns the provided error message.
30 : *
31 : * Terminates when it hits a struct message that's all zeros.
32 : *
33 : * @param mz the message list
34 : * @param kz the message key
35 : * @param nf the message to return if not found
36 : * @return the message
37 : */
38 10 : const char *lookup_msg(const struct message *mz, int kz, const char *nf)
39 : {
40 10 : static struct message nt = {0};
41 10 : const char *rz = nf ? nf : "(no message found)";
42 10 : const struct message *pnt;
43 30 : for (pnt = mz; memcmp(pnt, &nt, sizeof(struct message)); pnt++)
44 30 : if (pnt->key == kz) {
45 10 : rz = pnt->str ? pnt->str : rz;
46 : break;
47 : }
48 10 : return rz;
49 : }
50 :
51 : /* For time string format. */
52 9 : size_t frr_timestamp(int timestamp_precision, char *buf, size_t buflen)
53 : {
54 9 : static struct {
55 : time_t last;
56 : size_t len;
57 : char buf[28];
58 : } cache;
59 9 : struct timeval clock;
60 :
61 9 : gettimeofday(&clock, NULL);
62 :
63 : /* first, we update the cache if the time has changed */
64 9 : if (cache.last != clock.tv_sec) {
65 2 : struct tm tm;
66 2 : cache.last = clock.tv_sec;
67 2 : localtime_r(&cache.last, &tm);
68 2 : cache.len = strftime(cache.buf, sizeof(cache.buf),
69 : "%Y/%m/%d %H:%M:%S", &tm);
70 : }
71 : /* note: it's not worth caching the subsecond part, because
72 : chances are that back-to-back calls are not sufficiently close
73 : together
74 : for the clock not to have ticked forward */
75 :
76 9 : if (buflen > cache.len) {
77 9 : memcpy(buf, cache.buf, cache.len);
78 9 : if ((timestamp_precision > 0)
79 9 : && (buflen > cache.len + 1 + timestamp_precision)) {
80 : /* should we worry about locale issues? */
81 9 : static const int divisor[] = {0, 100000, 10000, 1000,
82 : 100, 10, 1};
83 9 : int prec;
84 9 : char *p = buf + cache.len + 1
85 9 : + (prec = timestamp_precision);
86 9 : *p-- = '\0';
87 9 : while (prec > 6)
88 : /* this is unlikely to happen, but protect anyway */
89 : {
90 0 : *p-- = '0';
91 0 : prec--;
92 : }
93 9 : clock.tv_usec /= divisor[prec];
94 18 : do {
95 18 : *p-- = '0' + (clock.tv_usec % 10);
96 18 : clock.tv_usec /= 10;
97 18 : } while (--prec > 0);
98 9 : *p = '.';
99 9 : return cache.len + 1 + timestamp_precision;
100 : }
101 0 : buf[cache.len] = '\0';
102 0 : return cache.len;
103 : }
104 0 : if (buflen > 0)
105 0 : buf[0] = '\0';
106 : return 0;
107 : }
108 :
109 : /*
110 : * crash handling
111 : *
112 : * NB: only AS-Safe (async-signal) functions can be used here!
113 : */
114 :
115 : /* Note: the goal here is to use only async-signal-safe functions. */
116 0 : void zlog_signal(int signo, const char *action, void *siginfo_v,
117 : void *program_counter)
118 : {
119 0 : siginfo_t *siginfo = siginfo_v;
120 0 : time_t now;
121 0 : char buf[sizeof("DEFAULT: Received signal S at T (si_addr 0xP, PC 0xP); aborting...")
122 : + 100];
123 0 : struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) };
124 :
125 0 : time(&now);
126 :
127 0 : bprintfrr(&fb, "Received signal %d at %lld", signo, (long long)now);
128 0 : if (program_counter)
129 0 : bprintfrr(&fb, " (si_addr 0x%tx, PC 0x%tx)",
130 0 : (ptrdiff_t)siginfo->si_addr,
131 : (ptrdiff_t)program_counter);
132 : else
133 0 : bprintfrr(&fb, " (si_addr 0x%tx)",
134 0 : (ptrdiff_t)siginfo->si_addr);
135 0 : bprintfrr(&fb, "; %s\n", action);
136 :
137 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
138 :
139 0 : zlog_backtrace_sigsafe(LOG_CRIT, program_counter);
140 :
141 0 : fb.pos = buf;
142 :
143 0 : struct event *tc;
144 0 : tc = pthread_getspecific(thread_current);
145 :
146 0 : if (!tc)
147 0 : bprintfrr(&fb, "no thread information available\n");
148 : else
149 0 : bprintfrr(&fb, "in thread %s scheduled from %s:%d %s()\n",
150 0 : tc->xref->funcname, tc->xref->xref.file,
151 0 : tc->xref->xref.line, tc->xref->xref.func);
152 :
153 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
154 0 : }
155 :
156 : /* Log a backtrace using only async-signal-safe functions.
157 : Needs to be enhanced to support syslog logging. */
158 0 : void zlog_backtrace_sigsafe(int priority, void *program_counter)
159 : {
160 : #ifdef HAVE_LIBUNWIND
161 0 : char buf[256];
162 0 : struct fbuf fb = { .buf = buf, .len = sizeof(buf) };
163 0 : unw_cursor_t cursor;
164 0 : unw_context_t uc;
165 0 : unw_word_t ip, off, sp;
166 0 : Dl_info dlinfo;
167 :
168 0 : memset(&uc, 0, sizeof(uc));
169 0 : memset(&cursor, 0, sizeof(cursor));
170 :
171 0 : unw_getcontext(&uc);
172 0 : unw_init_local(&cursor, &uc);
173 0 : while (unw_step(&cursor) > 0) {
174 0 : char name[128] = "?";
175 :
176 0 : unw_get_reg(&cursor, UNW_REG_IP, &ip);
177 0 : unw_get_reg(&cursor, UNW_REG_SP, &sp);
178 :
179 0 : if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off))
180 0 : snprintfrr(name, sizeof(name), "%s+%#lx",
181 : buf, (long)off);
182 :
183 0 : fb.pos = buf;
184 0 : if (unw_is_signal_frame(&cursor))
185 0 : bprintfrr(&fb, " ---- signal ----\n");
186 0 : bprintfrr(&fb, "%-30s %16lx %16lx", name, (long)ip, (long)sp);
187 0 : if (dladdr((void *)ip, &dlinfo))
188 0 : bprintfrr(&fb, " %s (mapped at %p)",
189 : dlinfo.dli_fname, dlinfo.dli_fbase);
190 0 : bprintfrr(&fb, "\n");
191 0 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
192 : }
193 : #elif defined(HAVE_GLIBC_BACKTRACE)
194 : void *array[64];
195 : int size, i;
196 : char buf[128];
197 : struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) };
198 : char **bt = NULL;
199 :
200 : size = backtrace(array, array_size(array));
201 : if (size <= 0 || (size_t)size > array_size(array))
202 : return;
203 :
204 : bprintfrr(&fb, "Backtrace for %d stack frames:", size);
205 : zlog_sigsafe(fb.pos, fb.buf - fb.pos);
206 :
207 : bt = backtrace_symbols(array, size);
208 :
209 : for (i = 0; i < size; i++) {
210 : fb.pos = buf;
211 : if (bt)
212 : bprintfrr(&fb, "%s", bt[i]);
213 : else
214 : bprintfrr(&fb, "[bt %d] 0x%tx", i,
215 : (ptrdiff_t)(array[i]));
216 : zlog_sigsafe(fb.buf, fb.pos - fb.buf);
217 : }
218 : if (bt)
219 : free(bt);
220 : #endif /* HAVE_STRACK_TRACE */
221 0 : }
222 :
223 0 : void zlog_backtrace(int priority)
224 : {
225 : #ifdef HAVE_LIBUNWIND
226 0 : char buf[100];
227 0 : unw_cursor_t cursor = {};
228 0 : unw_context_t uc;
229 0 : unw_word_t ip, off, sp;
230 0 : Dl_info dlinfo;
231 :
232 0 : unw_getcontext(&uc);
233 0 : unw_init_local(&cursor, &uc);
234 0 : zlog(priority, "Backtrace:");
235 0 : while (unw_step(&cursor) > 0) {
236 0 : char name[128] = "?";
237 :
238 0 : unw_get_reg(&cursor, UNW_REG_IP, &ip);
239 0 : unw_get_reg(&cursor, UNW_REG_SP, &sp);
240 :
241 0 : if (unw_is_signal_frame(&cursor))
242 0 : zlog(priority, " ---- signal ----");
243 :
244 0 : if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off))
245 0 : snprintf(name, sizeof(name), "%s+%#lx",
246 : buf, (long)off);
247 :
248 0 : if (dladdr((void *)ip, &dlinfo))
249 0 : zlog(priority, "%-30s %16lx %16lx %s (mapped at %p)",
250 : name, (long)ip, (long)sp,
251 : dlinfo.dli_fname, dlinfo.dli_fbase);
252 : else
253 0 : zlog(priority, "%-30s %16lx %16lx",
254 : name, (long)ip, (long)sp);
255 : }
256 : #elif defined(HAVE_GLIBC_BACKTRACE)
257 : void *array[20];
258 : int size, i;
259 : char **strings;
260 :
261 : size = backtrace(array, array_size(array));
262 : if (size <= 0 || (size_t)size > array_size(array)) {
263 : flog_err_sys(
264 : EC_LIB_SYSTEM_CALL,
265 : "Cannot get backtrace, returned invalid # of frames %d (valid range is between 1 and %lu)",
266 : size, (unsigned long)(array_size(array)));
267 : return;
268 : }
269 : zlog(priority, "Backtrace for %d stack frames:", size);
270 : if (!(strings = backtrace_symbols(array, size))) {
271 : flog_err_sys(EC_LIB_SYSTEM_CALL,
272 : "Cannot get backtrace symbols (out of memory?)");
273 : for (i = 0; i < size; i++)
274 : zlog(priority, "[bt %d] %p", i, array[i]);
275 : } else {
276 : for (i = 0; i < size; i++)
277 : zlog(priority, "[bt %d] %s", i, strings[i]);
278 : free(strings);
279 : }
280 : #else /* !HAVE_GLIBC_BACKTRACE && !HAVE_LIBUNWIND */
281 : zlog(priority, "No backtrace available on this platform.");
282 : #endif
283 0 : }
284 :
285 0 : void zlog_thread_info(int log_level)
286 : {
287 0 : struct event *tc;
288 0 : tc = pthread_getspecific(thread_current);
289 :
290 0 : if (tc)
291 0 : zlog(log_level,
292 : "Current thread function %s, scheduled from file %s, line %u in %s()",
293 0 : tc->xref->funcname, tc->xref->xref.file,
294 0 : tc->xref->xref.line, tc->xref->xref.func);
295 : else
296 0 : zlog(log_level, "Current thread not known/applicable");
297 0 : }
298 :
299 0 : void memory_oom(size_t size, const char *name)
300 : {
301 0 : zlog(LOG_CRIT,
302 : "out of memory: failed to allocate %zu bytes for %s object",
303 : size, name);
304 0 : zlog_backtrace(LOG_CRIT);
305 0 : log_memstats(stderr, "log");
306 0 : abort();
307 : }
308 :
309 : /* Wrapper around strerror to handle case where it returns NULL. */
310 6 : const char *safe_strerror(int errnum)
311 : {
312 6 : const char *s = strerror(errnum);
313 6 : return (s != NULL) ? s : "Unknown error";
314 : }
315 :
316 : #define DESC_ENTRY(T) [(T)] = { (T), (#T), '\0' }
317 : static const struct zebra_desc_table command_types[] = {
318 : DESC_ENTRY(ZEBRA_INTERFACE_ADD),
319 : DESC_ENTRY(ZEBRA_INTERFACE_DELETE),
320 : DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_ADD),
321 : DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_DELETE),
322 : DESC_ENTRY(ZEBRA_INTERFACE_UP),
323 : DESC_ENTRY(ZEBRA_INTERFACE_DOWN),
324 : DESC_ENTRY(ZEBRA_INTERFACE_SET_MASTER),
325 : DESC_ENTRY(ZEBRA_INTERFACE_SET_PROTODOWN),
326 : DESC_ENTRY(ZEBRA_ROUTE_ADD),
327 : DESC_ENTRY(ZEBRA_ROUTE_DELETE),
328 : DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_OWNER),
329 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ADD),
330 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DELETE),
331 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_ADD),
332 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE),
333 : DESC_ENTRY(ZEBRA_ROUTER_ID_ADD),
334 : DESC_ENTRY(ZEBRA_ROUTER_ID_DELETE),
335 : DESC_ENTRY(ZEBRA_ROUTER_ID_UPDATE),
336 : DESC_ENTRY(ZEBRA_HELLO),
337 : DESC_ENTRY(ZEBRA_CAPABILITIES),
338 : DESC_ENTRY(ZEBRA_NEXTHOP_REGISTER),
339 : DESC_ENTRY(ZEBRA_NEXTHOP_UNREGISTER),
340 : DESC_ENTRY(ZEBRA_NEXTHOP_UPDATE),
341 : DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_ADD),
342 : DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE),
343 : DESC_ENTRY(ZEBRA_INTERFACE_BFD_DEST_UPDATE),
344 : DESC_ENTRY(ZEBRA_BFD_DEST_REGISTER),
345 : DESC_ENTRY(ZEBRA_BFD_DEST_DEREGISTER),
346 : DESC_ENTRY(ZEBRA_BFD_DEST_UPDATE),
347 : DESC_ENTRY(ZEBRA_BFD_DEST_REPLAY),
348 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_ADD),
349 : DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_DEL),
350 : DESC_ENTRY(ZEBRA_VRF_UNREGISTER),
351 : DESC_ENTRY(ZEBRA_VRF_ADD),
352 : DESC_ENTRY(ZEBRA_VRF_DELETE),
353 : DESC_ENTRY(ZEBRA_VRF_LABEL),
354 : DESC_ENTRY(ZEBRA_BFD_CLIENT_REGISTER),
355 : DESC_ENTRY(ZEBRA_BFD_CLIENT_DEREGISTER),
356 : DESC_ENTRY(ZEBRA_INTERFACE_ENABLE_RADV),
357 : DESC_ENTRY(ZEBRA_INTERFACE_DISABLE_RADV),
358 : DESC_ENTRY(ZEBRA_NEXTHOP_LOOKUP_MRIB),
359 : DESC_ENTRY(ZEBRA_INTERFACE_LINK_PARAMS),
360 : DESC_ENTRY(ZEBRA_MPLS_LABELS_ADD),
361 : DESC_ENTRY(ZEBRA_MPLS_LABELS_DELETE),
362 : DESC_ENTRY(ZEBRA_MPLS_LABELS_REPLACE),
363 : DESC_ENTRY(ZEBRA_SR_POLICY_SET),
364 : DESC_ENTRY(ZEBRA_SR_POLICY_DELETE),
365 : DESC_ENTRY(ZEBRA_SR_POLICY_NOTIFY_STATUS),
366 : DESC_ENTRY(ZEBRA_IPMR_ROUTE_STATS),
367 : DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT),
368 : DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT_ASYNC),
369 : DESC_ENTRY(ZEBRA_GET_LABEL_CHUNK),
370 : DESC_ENTRY(ZEBRA_RELEASE_LABEL_CHUNK),
371 : DESC_ENTRY(ZEBRA_FEC_REGISTER),
372 : DESC_ENTRY(ZEBRA_FEC_UNREGISTER),
373 : DESC_ENTRY(ZEBRA_FEC_UPDATE),
374 : DESC_ENTRY(ZEBRA_ADVERTISE_DEFAULT_GW),
375 : DESC_ENTRY(ZEBRA_ADVERTISE_SVI_MACIP),
376 : DESC_ENTRY(ZEBRA_ADVERTISE_SUBNET),
377 : DESC_ENTRY(ZEBRA_ADVERTISE_ALL_VNI),
378 : DESC_ENTRY(ZEBRA_LOCAL_ES_ADD),
379 : DESC_ENTRY(ZEBRA_LOCAL_ES_DEL),
380 : DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_ADD),
381 : DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_DEL),
382 : DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_ADD),
383 : DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_DEL),
384 : DESC_ENTRY(ZEBRA_VNI_ADD),
385 : DESC_ENTRY(ZEBRA_VNI_DEL),
386 : DESC_ENTRY(ZEBRA_L3VNI_ADD),
387 : DESC_ENTRY(ZEBRA_L3VNI_DEL),
388 : DESC_ENTRY(ZEBRA_REMOTE_VTEP_ADD),
389 : DESC_ENTRY(ZEBRA_REMOTE_VTEP_DEL),
390 : DESC_ENTRY(ZEBRA_MACIP_ADD),
391 : DESC_ENTRY(ZEBRA_MACIP_DEL),
392 : DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_ADD),
393 : DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_DEL),
394 : DESC_ENTRY(ZEBRA_REMOTE_MACIP_ADD),
395 : DESC_ENTRY(ZEBRA_REMOTE_MACIP_DEL),
396 : DESC_ENTRY(ZEBRA_DUPLICATE_ADDR_DETECTION),
397 : DESC_ENTRY(ZEBRA_PW_ADD),
398 : DESC_ENTRY(ZEBRA_PW_DELETE),
399 : DESC_ENTRY(ZEBRA_PW_SET),
400 : DESC_ENTRY(ZEBRA_PW_UNSET),
401 : DESC_ENTRY(ZEBRA_PW_STATUS_UPDATE),
402 : DESC_ENTRY(ZEBRA_RULE_ADD),
403 : DESC_ENTRY(ZEBRA_RULE_DELETE),
404 : DESC_ENTRY(ZEBRA_RULE_NOTIFY_OWNER),
405 : DESC_ENTRY(ZEBRA_TABLE_MANAGER_CONNECT),
406 : DESC_ENTRY(ZEBRA_GET_TABLE_CHUNK),
407 : DESC_ENTRY(ZEBRA_RELEASE_TABLE_CHUNK),
408 : DESC_ENTRY(ZEBRA_IPSET_CREATE),
409 : DESC_ENTRY(ZEBRA_IPSET_DESTROY),
410 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_ADD),
411 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_DELETE),
412 : DESC_ENTRY(ZEBRA_IPSET_NOTIFY_OWNER),
413 : DESC_ENTRY(ZEBRA_IPSET_ENTRY_NOTIFY_OWNER),
414 : DESC_ENTRY(ZEBRA_IPTABLE_ADD),
415 : DESC_ENTRY(ZEBRA_IPTABLE_DELETE),
416 : DESC_ENTRY(ZEBRA_IPTABLE_NOTIFY_OWNER),
417 : DESC_ENTRY(ZEBRA_VXLAN_FLOOD_CONTROL),
418 : DESC_ENTRY(ZEBRA_VXLAN_SG_ADD),
419 : DESC_ENTRY(ZEBRA_VXLAN_SG_DEL),
420 : DESC_ENTRY(ZEBRA_VXLAN_SG_REPLAY),
421 : DESC_ENTRY(ZEBRA_MLAG_PROCESS_UP),
422 : DESC_ENTRY(ZEBRA_MLAG_PROCESS_DOWN),
423 : DESC_ENTRY(ZEBRA_MLAG_CLIENT_REGISTER),
424 : DESC_ENTRY(ZEBRA_MLAG_CLIENT_UNREGISTER),
425 : DESC_ENTRY(ZEBRA_MLAG_FORWARD_MSG),
426 : DESC_ENTRY(ZEBRA_NHG_ADD),
427 : DESC_ENTRY(ZEBRA_NHG_DEL),
428 : DESC_ENTRY(ZEBRA_NHG_NOTIFY_OWNER),
429 : DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_ADD),
430 : DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_DEL),
431 : DESC_ENTRY(ZEBRA_SRV6_LOCATOR_ADD),
432 : DESC_ENTRY(ZEBRA_SRV6_LOCATOR_DELETE),
433 : DESC_ENTRY(ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK),
434 : DESC_ENTRY(ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK),
435 : DESC_ENTRY(ZEBRA_ERROR),
436 : DESC_ENTRY(ZEBRA_CLIENT_CAPABILITIES),
437 : DESC_ENTRY(ZEBRA_OPAQUE_MESSAGE),
438 : DESC_ENTRY(ZEBRA_OPAQUE_REGISTER),
439 : DESC_ENTRY(ZEBRA_OPAQUE_UNREGISTER),
440 : DESC_ENTRY(ZEBRA_NEIGH_DISCOVER),
441 : DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_REQUEST),
442 : DESC_ENTRY(ZEBRA_CLIENT_CLOSE_NOTIFY),
443 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_ADDED),
444 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_REMOVED),
445 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_GET),
446 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_REGISTER),
447 : DESC_ENTRY(ZEBRA_NHRP_NEIGH_UNREGISTER),
448 : DESC_ENTRY(ZEBRA_NEIGH_IP_ADD),
449 : DESC_ENTRY(ZEBRA_NEIGH_IP_DEL),
450 : DESC_ENTRY(ZEBRA_CONFIGURE_ARP),
451 : DESC_ENTRY(ZEBRA_GRE_GET),
452 : DESC_ENTRY(ZEBRA_GRE_UPDATE),
453 : DESC_ENTRY(ZEBRA_GRE_SOURCE_SET),
454 : DESC_ENTRY(ZEBRA_TC_QDISC_INSTALL),
455 : DESC_ENTRY(ZEBRA_TC_QDISC_UNINSTALL),
456 : DESC_ENTRY(ZEBRA_TC_CLASS_ADD),
457 : DESC_ENTRY(ZEBRA_TC_CLASS_DELETE),
458 : DESC_ENTRY(ZEBRA_TC_FILTER_ADD),
459 : DESC_ENTRY(ZEBRA_TC_FILTER_DELETE),
460 : DESC_ENTRY(ZEBRA_OPAQUE_NOTIFY)
461 : };
462 : #undef DESC_ENTRY
463 :
464 : static const struct zebra_desc_table unknown = {0, "unknown", '?'};
465 :
466 168 : static const struct zebra_desc_table *zroute_lookup(unsigned int zroute)
467 : {
468 168 : unsigned int i;
469 :
470 168 : if (zroute >= array_size(route_types)) {
471 0 : flog_err(EC_LIB_DEVELOPMENT, "unknown zebra route type: %u",
472 : zroute);
473 0 : return &unknown;
474 : }
475 168 : if (zroute == route_types[zroute].type)
476 168 : return &route_types[zroute];
477 0 : for (i = 0; i < array_size(route_types); i++) {
478 0 : if (zroute == route_types[i].type) {
479 0 : zlog_warn(
480 : "internal error: route type table out of order while searching for %u, please notify developers",
481 : zroute);
482 0 : return &route_types[i];
483 : }
484 : }
485 0 : flog_err(EC_LIB_DEVELOPMENT,
486 : "internal error: cannot find route type %u in table!", zroute);
487 0 : return &unknown;
488 : }
489 :
490 168 : const char *zebra_route_string(unsigned int zroute)
491 : {
492 168 : return zroute_lookup(zroute)->string;
493 : }
494 :
495 0 : char zebra_route_char(unsigned int zroute)
496 : {
497 0 : return zroute_lookup(zroute)->chr;
498 : }
499 :
500 6 : const char *zserv_command_string(unsigned int command)
501 : {
502 6 : if (command >= array_size(command_types)) {
503 0 : flog_err(EC_LIB_DEVELOPMENT, "unknown zserv command type: %u",
504 : command);
505 0 : return unknown.string;
506 : }
507 6 : return command_types[command].string;
508 : }
509 :
510 : #define DESC_ENTRY(T) [(T)] = {(T), (#T), '\0'}
511 : static const struct zebra_desc_table gr_client_cap_types[] = {
512 : DESC_ENTRY(ZEBRA_CLIENT_GR_CAPABILITIES),
513 : DESC_ENTRY(ZEBRA_CLIENT_ROUTE_UPDATE_COMPLETE),
514 : DESC_ENTRY(ZEBRA_CLIENT_ROUTE_UPDATE_PENDING),
515 : DESC_ENTRY(ZEBRA_CLIENT_GR_DISABLE),
516 : DESC_ENTRY(ZEBRA_CLIENT_RIB_STALE_TIME),
517 : };
518 : #undef DESC_ENTRY
519 :
520 88 : const char *zserv_gr_client_cap_string(uint32_t zcc)
521 : {
522 88 : if (zcc >= array_size(gr_client_cap_types)) {
523 0 : flog_err(EC_LIB_DEVELOPMENT, "unknown zserv command type: %u",
524 : zcc);
525 0 : return unknown.string;
526 : }
527 88 : return gr_client_cap_types[zcc].string;
528 : }
529 :
530 0 : int proto_name2num(const char *s)
531 : {
532 0 : unsigned i;
533 :
534 0 : for (i = 0; i < array_size(route_types); ++i)
535 0 : if (strcasecmp(s, route_types[i].string) == 0)
536 0 : return route_types[i].type;
537 : return -1;
538 : }
539 :
540 2 : int proto_redistnum(int afi, const char *s)
541 : {
542 2 : if (!s)
543 : return -1;
544 :
545 2 : if (afi == AFI_IP) {
546 2 : if (strmatch(s, "kernel"))
547 : return ZEBRA_ROUTE_KERNEL;
548 2 : else if (strmatch(s, "connected"))
549 : return ZEBRA_ROUTE_CONNECT;
550 0 : else if (strmatch(s, "static"))
551 : return ZEBRA_ROUTE_STATIC;
552 0 : else if (strmatch(s, "rip"))
553 : return ZEBRA_ROUTE_RIP;
554 0 : else if (strmatch(s, "eigrp"))
555 : return ZEBRA_ROUTE_EIGRP;
556 0 : else if (strmatch(s, "ospf"))
557 : return ZEBRA_ROUTE_OSPF;
558 0 : else if (strmatch(s, "isis"))
559 : return ZEBRA_ROUTE_ISIS;
560 0 : else if (strmatch(s, "bgp"))
561 : return ZEBRA_ROUTE_BGP;
562 0 : else if (strmatch(s, "table"))
563 : return ZEBRA_ROUTE_TABLE;
564 0 : else if (strmatch(s, "vnc"))
565 : return ZEBRA_ROUTE_VNC;
566 0 : else if (strmatch(s, "vnc-direct"))
567 : return ZEBRA_ROUTE_VNC_DIRECT;
568 0 : else if (strmatch(s, "nhrp"))
569 : return ZEBRA_ROUTE_NHRP;
570 0 : else if (strmatch(s, "babel"))
571 : return ZEBRA_ROUTE_BABEL;
572 0 : else if (strmatch(s, "sharp"))
573 : return ZEBRA_ROUTE_SHARP;
574 0 : else if (strmatch(s, "openfabric"))
575 : return ZEBRA_ROUTE_OPENFABRIC;
576 0 : else if (strmatch(s, "table-direct"))
577 : return ZEBRA_ROUTE_TABLE_DIRECT;
578 : }
579 0 : if (afi == AFI_IP6) {
580 0 : if (strmatch(s, "kernel"))
581 : return ZEBRA_ROUTE_KERNEL;
582 0 : else if (strmatch(s, "connected"))
583 : return ZEBRA_ROUTE_CONNECT;
584 0 : else if (strmatch(s, "static"))
585 : return ZEBRA_ROUTE_STATIC;
586 0 : else if (strmatch(s, "ripng"))
587 : return ZEBRA_ROUTE_RIPNG;
588 0 : else if (strmatch(s, "ospf6"))
589 : return ZEBRA_ROUTE_OSPF6;
590 0 : else if (strmatch(s, "isis"))
591 : return ZEBRA_ROUTE_ISIS;
592 0 : else if (strmatch(s, "bgp"))
593 : return ZEBRA_ROUTE_BGP;
594 0 : else if (strmatch(s, "table"))
595 : return ZEBRA_ROUTE_TABLE;
596 0 : else if (strmatch(s, "vnc"))
597 : return ZEBRA_ROUTE_VNC;
598 0 : else if (strmatch(s, "vnc-direct"))
599 : return ZEBRA_ROUTE_VNC_DIRECT;
600 0 : else if (strmatch(s, "nhrp"))
601 : return ZEBRA_ROUTE_NHRP;
602 0 : else if (strmatch(s, "babel"))
603 : return ZEBRA_ROUTE_BABEL;
604 0 : else if (strmatch(s, "sharp"))
605 : return ZEBRA_ROUTE_SHARP;
606 0 : else if (strmatch(s, "openfabric"))
607 : return ZEBRA_ROUTE_OPENFABRIC;
608 0 : else if (strmatch(s, "table-direct"))
609 0 : return ZEBRA_ROUTE_TABLE_DIRECT;
610 : }
611 : return -1;
612 : }
613 :
614 0 : void zlog_hexdump(const void *mem, size_t len)
615 : {
616 0 : char line[64];
617 0 : const uint8_t *src = mem;
618 0 : const uint8_t *end = src + len;
619 :
620 0 : if (len == 0) {
621 0 : zlog_debug("%016lx: (zero length / no data)", (long)src);
622 0 : return;
623 : }
624 :
625 0 : while (src < end) {
626 0 : struct fbuf fb = {
627 : .buf = line,
628 : .pos = line,
629 : .len = sizeof(line),
630 : };
631 0 : const uint8_t *lineend = src + 8;
632 0 : unsigned line_bytes = 0;
633 :
634 0 : bprintfrr(&fb, "%016lx: ", (long)src);
635 :
636 0 : while (src < lineend && src < end) {
637 0 : bprintfrr(&fb, "%02x ", *src++);
638 0 : line_bytes++;
639 : }
640 0 : if (line_bytes < 8)
641 0 : bprintfrr(&fb, "%*s", (8 - line_bytes) * 3, "");
642 :
643 0 : src -= line_bytes;
644 0 : while (src < lineend && src < end && fb.pos < fb.buf + fb.len) {
645 0 : uint8_t byte = *src++;
646 :
647 0 : if (isprint(byte))
648 0 : *fb.pos++ = byte;
649 : else
650 0 : *fb.pos++ = '.';
651 : }
652 :
653 0 : zlog_debug("%.*s", (int)(fb.pos - fb.buf), fb.buf);
654 : }
655 : }
656 :
657 0 : const char *zlog_sanitize(char *buf, size_t bufsz, const void *in, size_t inlen)
658 : {
659 0 : const char *inbuf = in;
660 0 : char *pos = buf, *end = buf + bufsz;
661 0 : const char *iend = inbuf + inlen;
662 :
663 0 : memset(buf, 0, bufsz);
664 0 : for (; inbuf < iend; inbuf++) {
665 : /* don't write partial escape sequence */
666 0 : if (end - pos < 5)
667 : break;
668 :
669 0 : if (*inbuf == '\n')
670 0 : snprintf(pos, end - pos, "\\n");
671 0 : else if (*inbuf == '\r')
672 0 : snprintf(pos, end - pos, "\\r");
673 0 : else if (*inbuf == '\t')
674 0 : snprintf(pos, end - pos, "\\t");
675 0 : else if (*inbuf < ' ' || *inbuf == '"' || *inbuf >= 127)
676 0 : snprintf(pos, end - pos, "\\x%02hhx", *inbuf);
677 : else
678 0 : *pos = *inbuf;
679 :
680 0 : pos += strlen(pos);
681 : }
682 0 : return buf;
683 : }
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