FD.io VPP  v20.01-48-g3e0dafb74
Vector Packet Processing
syslog.c
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1 /*
2  * Copyright (c) 2018 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /**
16  * @file RFC5424 syslog protocol implementation
17  */
18 
19 #include <unistd.h>
20 #include <vnet/fib/fib_table.h>
21 #include <vnet/ip/format.h>
22 #include <vnet/syslog/syslog.h>
23 #include <vnet/syslog/syslog_udp.h>
24 
25 #define SYSLOG_VERSION "1"
26 #define NILVALUE "-"
27 #define DEFAULT_UDP_PORT 514
28 #define DEFAULT_MAX_MSG_SIZE 480
29 
30 #define encode_priority(f, p) ((f << 3) | p)
31 
33 
34 /* format timestamp RFC5424 6.2.3. */
35 static u8 *
36 format_syslog_timestamp (u8 * s, va_list * args)
37 {
38  f64 timestamp = va_arg (*args, f64);
39  struct tm *tm;
40  word msec;
41 
42  time_t t = timestamp;
43  tm = gmtime (&t);
44  msec = 1e6 * (timestamp - t);
45  return format (s, "%4d-%02d-%02dT%02d:%02d:%02d.%06dZ", 1900 + tm->tm_year,
46  1 + tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min,
47  tm->tm_sec, msec);
48 }
49 
50 /* format header RFC5424 6.2. */
51 static u8 *
52 format_syslog_header (u8 * s, va_list * args)
53 {
55  syslog_header_t *h = va_arg (*args, syslog_header_t *);
56  u32 pri = encode_priority (h->facility, h->severity);
57 
58  return format (s, "<%d>%s %U %U %s %d %s", pri, SYSLOG_VERSION,
61  h->app_name ? h->app_name : NILVALUE, sm->procid,
62  h->msgid ? h->msgid : NILVALUE);
63 }
64 
65 /* format strucured data elements RFC5424 6.3. */
66 static u8 *
67 format_syslog_structured_data (u8 * s, va_list * args)
68 {
69  u8 **sds = va_arg (*args, u8 **);
70  int i;
71 
72  if (vec_len (sds))
73  {
74  for (i = 0; i < vec_len (sds); i++)
75  s = format (s, "[%v]", sds[i]);
76  }
77  /* if zero structured data elemts field must contain NILVALUE */
78  else
79  s = format (s, "%s", NILVALUE);
80 
81  return s;
82 }
83 
84 static u8 *
85 format_syslog_msg (u8 * s, va_list * args)
86 {
87  syslog_msg_t *m = va_arg (*args, syslog_msg_t *);
88 
89  s =
90  format (s, "%U %U", format_syslog_header, &m->header,
92  /* free-form message is optional */
93  if (m->msg)
94  s = format (s, " %s", m->msg);
95 
96  return s;
97 }
98 
99 void
101 {
102  u8 *sd;
103 
104  sd = format (0, "%s", sd_id);
105  vec_add1 (syslog_msg->structured_data, sd);
106  syslog_msg->curr_sd_index++;
107 }
108 
109 void
111  ...)
112 {
113  va_list va;
114  u8 *value;
115 
116  va_start (va, fmt);
117  value = va_format (0, fmt, &va);
118  va_end (va);
119  vec_terminate_c_string (value);
120 
121  syslog_msg->structured_data[syslog_msg->curr_sd_index] =
122  format (syslog_msg->structured_data[syslog_msg->curr_sd_index],
123  " %s=\"%s\"", name, value);
124  vec_free (value);
125 }
126 
127 void
129 {
130  va_list va;
131  u8 *msg;
132 
133  va_start (va, fmt);
134  msg = va_format (0, fmt, &va);
135  va_end (va);
137 
138  syslog_msg->msg = msg;
139 }
140 
141 void
143  syslog_severity_t severity, char *app_name, char *msgid)
144 {
145  syslog_main_t *sm = &syslog_main;
146  vlib_main_t *vm = sm->vlib_main;
147 
148  syslog_msg->header.facility = facility;
149  syslog_msg->header.severity = severity;
150  syslog_msg->header.timestamp = vlib_time_now (vm);
151  syslog_msg->header.app_name = app_name;
152  syslog_msg->header.msgid = msgid;
153  syslog_msg->structured_data = 0;
154  syslog_msg->curr_sd_index = ~0;
155  syslog_msg->msg = 0;
156 }
157 
158 int
160 {
161  syslog_main_t *sm = &syslog_main;
162  vlib_main_t *vm = sm->vlib_main;
163  u32 bi, msg_len, *to_next;
164  u8 *tmp;
165  vlib_buffer_t *b;
166  vlib_frame_t *f;
167  int i;
168 
169  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
170  return -1;
171 
172  b = vlib_get_buffer (vm, bi);
174 
175  /* one message per UDP datagram RFC5426 3.1. */
176  tmp = format (0, "%U", format_syslog_msg, syslog_msg);
177  msg_len = vec_len (tmp) - (vec_c_string_is_terminated (tmp) ? 1 : 0);
178  msg_len = msg_len < sm->max_msg_size ? msg_len : sm->max_msg_size;
179  clib_memcpy_fast (b->data, tmp, msg_len);
180  b->current_length = msg_len;
181  vec_free (tmp);
182 
183  vec_free (syslog_msg->msg);
184  for (i = 0; i < vec_len (syslog_msg->structured_data); i++)
185  vec_free (syslog_msg->structured_data[i]);
186  vec_free (syslog_msg->structured_data);
187 
188  syslog_add_udp_transport (vm, bi);
189 
191  to_next = vlib_frame_vector_args (f);
192  to_next[0] = bi;
193  f->n_vectors = 1;
195 
196  return 0;
197 }
198 
199 static uword
201 {
202  u32 *r = va_arg (*args, u32 *);
203 
204  if (0);
205 #define _(v,f,s) else if (unformat (input, s)) *r = SYSLOG_FACILITY_##f;
207 #undef _
208  else
209  return 0;
210 
211  return 1;
212 }
213 
214 static uword
216 {
217  u32 *r = va_arg (*args, u32 *);
218 
219  if (0);
220 #define _(v,f,s) else if (unformat (input, s)) *r = SYSLOG_SEVERITY_##f;
222 #undef _
223  else
224  return 0;
225 
226  return 1;
227 }
228 
229 static u8 *
230 format_syslog_severity (u8 * s, va_list * args)
231 {
232  u32 i = va_arg (*args, u32);
233  u8 *t = 0;
234 
235  switch (i)
236  {
237 #define _(v,f,str) case SYSLOG_SEVERITY_##f: t = (u8 *) str; break;
239 #undef _
240  default:
241  return format (s, "unknown");
242  }
243 
244  return format (s, "%s", t);
245 }
246 
248 set_syslog_sender (ip4_address_t * collector, u16 collector_port,
249  ip4_address_t * src, u32 vrf_id, u32 max_msg_size)
250 {
251  syslog_main_t *sm = &syslog_main;
252  u32 fib_index;
253 
254  if (max_msg_size < DEFAULT_MAX_MSG_SIZE)
255  return VNET_API_ERROR_INVALID_VALUE;
256 
257  if (collector->as_u32 == 0 || collector_port == 0 || src->as_u32 == 0)
258  return VNET_API_ERROR_INVALID_VALUE;
259 
260  if (vrf_id == ~0)
261  {
262  fib_index = ~0;
263  }
264  else
265  {
266  fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
267  if (fib_index == ~0)
268  return VNET_API_ERROR_NO_SUCH_FIB;
269  }
270 
271  sm->fib_index = fib_index;
272 
273  sm->collector.as_u32 = collector->as_u32;
274  sm->collector_port = (u16) collector_port;
275  sm->src_address.as_u32 = src->as_u32;
276  sm->max_msg_size = max_msg_size;
277 
278  return 0;
279 }
280 
281 static clib_error_t *
283  vlib_cli_command_t * cmd)
284 {
285  unformat_input_t _line_input, *line_input = &_line_input;
286  ip4_address_t collector, src;
287  u32 collector_port = DEFAULT_UDP_PORT;
288  u32 vrf_id = ~0;
289  u32 max_msg_size = DEFAULT_MAX_MSG_SIZE;
290  clib_error_t *ret = 0;
291 
292  collector.as_u32 = 0;
293  src.as_u32 = 0;
294 
295  /* Get a line of input. */
296  if (!unformat_user (input, unformat_line_input, line_input))
297  return 0;
298 
299  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
300  {
301  if (unformat
302  (line_input, "collector %U", unformat_ip4_address, &collector))
303  ;
304  else if (unformat (line_input, "port %u", &collector_port))
305  ;
306  else if (unformat (line_input, "src %U", unformat_ip4_address, &src))
307  ;
308  else if (unformat (line_input, "vrf-id %u", &vrf_id))
309  ;
310  else if (unformat (line_input, "max-msg-size %u", &max_msg_size))
311  ;
312  else
313  {
314  ret = clib_error_return (0, "Unknown input `%U'",
315  format_unformat_error, line_input);
316  goto done;
317  }
318  }
319 
320  if (collector.as_u32 == 0)
321  {
322  ret = clib_error_return (0, "collector address required");
323  goto done;
324  }
325 
326  if (src.as_u32 == 0)
327  {
328  ret = clib_error_return (0, "src address required");
329  goto done;
330  }
331 
332  if (max_msg_size < DEFAULT_MAX_MSG_SIZE)
333  {
334  ret =
335  clib_error_return (0, "too small max-msg-size value, minimum is %u",
337  goto done;
338  }
339 
340  vnet_api_error_t rv =
341  set_syslog_sender (&collector, collector_port, &src, vrf_id,
342  max_msg_size);
343 
344  if (rv)
345  ret =
346  clib_error_return (0, "set syslog sender failed rv=%d:%U", (int) rv,
348 
349 done:
350  unformat_free (line_input);
351  return ret;
352 }
353 
354 static clib_error_t *
356  vlib_cli_command_t * cmd)
357 {
358  syslog_main_t *sm = &syslog_main;
359  u32 vrf_id = ~0;
360 
361  if (sm->fib_index != ~0)
363 
364  if (syslog_is_enabled ())
365  vlib_cli_output (vm, "collector %U:%u, src address %U, VRF ID %d, "
366  "max-msg-size %u",
369  vrf_id, sm->max_msg_size);
370  else
371  vlib_cli_output (vm, "syslog sender is disabled");
372 
373  return 0;
374 }
375 
376 static clib_error_t *
378  vlib_cli_command_t * cmd)
379 {
380  unformat_input_t _line_input, *line_input = &_line_input;
382  syslog_facility_t facility;
383  syslog_severity_t severity;
384  clib_error_t *ret = 0;
385  u8 *app_name = 0, *msgid = 0, *sd_id = 0, *param_name = 0, *param_value = 0;
386 
387  if (!syslog_is_enabled ())
388  return 0;
389 
390  /* Get a line of input. */
391  if (!unformat_user (input, unformat_line_input, line_input))
392  return 0;
393 
394  if (unformat (line_input, "%U", unformat_syslog_facility, &facility))
395  {
396  if (unformat (line_input, "%U", unformat_syslog_severity, &severity))
397  {
398  if (syslog_severity_filter_block (severity))
399  goto done;
400 
401  if (unformat (line_input, "%s", &app_name))
402  {
403  if (unformat (line_input, "%s", &msgid))
404  {
405  syslog_msg_init (&syslog_msg, facility, severity,
406  (char *) app_name, (char *) msgid);
407  while (unformat (line_input, "sd-id %s", &sd_id))
408  {
409  syslog_msg_sd_init (&syslog_msg, (char *) sd_id);
410  while (unformat
411  (line_input, "sd-param %s %s", &param_name,
412  &param_value))
413  {
414  syslog_msg_add_sd_param (&syslog_msg,
415  (char *) param_name,
416  (char *) param_value);
417  vec_free (param_name);
418  vec_free (param_value);
419  }
420  vec_free (sd_id);
421  }
422  if (unformat_check_input (line_input) !=
424  syslog_msg_add_msg (&syslog_msg, "%U",
425  format_unformat_input, line_input);
426  syslog_msg_send (&syslog_msg);
427  }
428  else
429  {
430  ret =
431  clib_error_return (0, "Unknown input `%U'",
432  format_unformat_error, line_input);
433  goto done;
434  }
435  }
436  else
437  {
438  ret =
439  clib_error_return (0, "Unknown input `%U'",
440  format_unformat_error, line_input);
441  goto done;
442  }
443  }
444  else
445  {
446  ret =
447  clib_error_return (0, "Unknown input `%U'", format_unformat_error,
448  line_input);
449  goto done;
450  }
451  }
452  else
453  {
454  ret =
455  clib_error_return (0, "Unknown input `%U'", format_unformat_error,
456  line_input);
457  goto done;
458  }
459 
460 done:
461  vec_free (app_name);
462  vec_free (msgid);
463  unformat_free (line_input);
464  return ret;
465 }
466 
467 static clib_error_t *
469  vlib_cli_command_t * cmd)
470 {
471  unformat_input_t _line_input, *line_input = &_line_input;
472  syslog_main_t *sm = &syslog_main;
473  clib_error_t *ret = 0;
474 
475  /* Get a line of input. */
476  if (!unformat_user (input, unformat_line_input, line_input))
477  return 0;
478 
479  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
480  {
481  if (unformat
482  (line_input, "severity %U", unformat_syslog_severity,
483  &sm->severity_filter))
484  ;
485  else
486  {
487  ret = clib_error_return (0, "Unknown input `%U'",
488  format_unformat_error, line_input);
489  goto done;
490  }
491  }
492 
493 done:
494  unformat_free (line_input);
495  return ret;
496 }
497 
498 static clib_error_t *
500  vlib_cli_command_t * cmd)
501 {
502  syslog_main_t *sm = &syslog_main;
503 
504  vlib_cli_output (vm, "severity-filter: %U", format_syslog_severity,
505  sm->severity_filter);
506 
507  return 0;
508 }
509 
510 /* *INDENT-OFF* */
511 /*?
512  * Set syslog sender configuration.
513  *
514  * @cliexpar
515  * @parblock
516  *
517  * Example of how to configure syslog sender:
518  * @cliexcmd{set syslog sender collector 10.10.10.10 port 514 src 172.16.2.2}
519  * @endparblock
520 ?*/
521 VLIB_CLI_COMMAND (set_syslog_sender_command, static) = {
522  .path = "set syslog sender",
523  .short_help = "set syslog sender "
524  "collector <ip4-address> [port <port>] "
525  "src <ip4-address> [vrf-id <vrf-id>] "
526  "[max-msg-size <max-msg-size>]",
527  .function = set_syslog_sender_command_fn,
528 };
529 
530 /*?
531  * Show syslog sender configuration.
532  *
533  * @cliexpar
534  * @parblock
535  *
536  * Example of how to display syslog sender configuration:
537  * @cliexstart{show syslog sender}
538  * collector 10.10.10.10:514, src address 172.16.2.2, VRF ID 0, max-msg-size 480
539  * @cliexend
540  * @endparblock
541 ?*/
542 VLIB_CLI_COMMAND (show_syslog_sender_command, static) = {
543  .path = "show syslog sender",
544  .short_help = "show syslog sender",
545  .function = show_syslog_sender_command_fn,
546 };
547 
548 /*?
549  * This command generate test syslog message.
550  *
551  * @cliexpar
552  * @parblock
553  *
554  * Example of how to generate following syslog message
555  * '<em><180>1 2018-11-07T11:36:41.231759Z 172.16.1.1 test 10484 testMsg
556  * [exampleSDID@32473 eventID="1011" eventSource="App" iut="3"]
557  * this is message</em>'
558  * @cliexcmd{test syslog local6 warning test testMsg sd-id <!--
559  * --> exampleSDID@32473 sd-param eventID 1011 sd-param eventSource App <!--
560  * --> sd-param iut 3 this is message}
561  * @endparblock
562 ?*/
563 VLIB_CLI_COMMAND (test_syslog_command, static) = {
564  .path = "test syslog",
565  .short_help = "test syslog <facility> <severity> <app-name> <msgid> "
566  "[sd-id <sd-id> sd-param <name> <value>] [<message]",
567  .function = test_syslog_command_fn,
568 };
569 
570 /*?
571  * Set syslog severity filter, specified severity and greater match.
572  *
573  * @cliexpar
574  * @parblock
575  *
576  * Example of how to configure syslog severity filter:
577  * @cliexcmd{set syslog filter severity warning}
578  * @endparblock
579 ?*/
580 VLIB_CLI_COMMAND (set_syslog_filter_command, static) = {
581  .path = "set syslog filter",
582  .short_help = "set syslog filter severity <severity>",
583  .function = set_syslog_filter_command_fn,
584 };
585 
586 /*?
587  * Show syslog severity filter.
588  *
589  * @cliexpar
590  * @parblock
591  *
592  * Example of how to display syslog severity filter:
593  * @cliexstart{show syslog filter}
594  * severity-filter: warning
595  * @cliexend
596  * @endparblock
597 ?*/
598 VLIB_CLI_COMMAND (show_syslog_filter_command, static) = {
599  .path = "show syslog filter",
600  .short_help = "show syslog filter",
601  .function = show_syslog_filter_command_fn,
602 };
603 /* *INDENT-ON* */
604 
605 static clib_error_t *
607 {
608  syslog_main_t *sm = &syslog_main;
609  f64 vlib_time_0 = vlib_time_now (vm);
610  struct timeval timeval_0;
612 
613  sm->vlib_main = vm;
614  sm->vnet_main = vnet_get_main ();
615 
616  sm->procid = getpid ();
617  gettimeofday (&timeval_0, 0);
618  sm->time_offset =
619  (f64) timeval_0.tv_sec + (((f64) timeval_0.tv_usec) * 1e-6) - vlib_time_0;
620 
621  sm->collector.as_u32 = 0;
622  sm->src_address.as_u32 = 0;
625  sm->fib_index = ~0;
626  sm->severity_filter = SYSLOG_SEVERITY_INFORMATIONAL;
627 
628  ip4_lookup_node = vlib_get_node_by_name (vm, (u8 *) "ip4-lookup");
629  sm->ip4_lookup_node_index = ip4_lookup_node->index;
630 
631  return 0;
632 }
633 
635 
636 /*
637  * fd.io coding-style-patch-verification: ON
638  *
639  * Local Variables:
640  * eval: (c-set-style "gnu")
641  * End:
642  */
char * app_name
application that originated the message RFC5424 6.2.5.
Definition: syslog.h:88
u16 collector_port
UDP port number of remote host (destination)
Definition: syslog.h:120
vnet_api_error_t
Definition: api_errno.h:158
char * msgid
identify the type of message RFC5424 6.2.7.
Definition: syslog.h:91
f64 time_offset
time offset
Definition: syslog.h:114
#define vec_c_string_is_terminated(V)
Test whether a vector is a NULL terminated c-string.
Definition: vec.h:1009
void syslog_msg_add_msg(syslog_msg_t *syslog_msg, char *fmt,...)
Add free-form message RFC5424 6.4.
Definition: syslog.c:128
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static u8 * format_syslog_msg(u8 *s, va_list *args)
Definition: syslog.c:85
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:279
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
#define vec_terminate_c_string(V)
(If necessary) NULL terminate a vector containing a c-string.
Definition: vec.h:1017
u8 data[0]
Packet data.
Definition: buffer.h:181
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:523
vl_api_address_t src
Definition: gre.api:60
static clib_error_t * show_syslog_sender_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:355
int i
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
syslog header
Definition: syslog.h:76
static uword unformat_syslog_facility(unformat_input_t *input, va_list *args)
Definition: syslog.c:200
u32 fib_index
FIB table index.
Definition: syslog.h:126
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define SYSLOG_VERSION
Definition: syslog.c:25
u8 * va_format(u8 *s, const char *fmt, va_list *va)
Definition: format.c:387
u32 max_msg_size
message size limit
Definition: syslog.h:129
vlib_main_t * vlib_main
convenience variables
Definition: syslog.h:138
static u8 * format_syslog_header(u8 *s, va_list *args)
Definition: syslog.c:52
#define DEFAULT_UDP_PORT
Definition: syslog.c:27
unsigned char u8
Definition: types.h:56
static clib_error_t * set_syslog_sender_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:282
double f64
Definition: types.h:142
vlib_node_registration_t ip4_lookup_node
(constructor) VLIB_REGISTER_NODE (ip4_lookup_node)
Definition: ip4_forward.c:102
format_function_t format_ip4_address
Definition: format.h:73
static clib_error_t * test_syslog_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:377
i64 word
Definition: types.h:111
unformat_function_t unformat_ip4_address
Definition: format.h:68
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
static clib_error_t * set_syslog_filter_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:468
static u8 * format_syslog_timestamp(u8 *s, va_list *args)
Definition: syslog.c:36
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:185
#define clib_error_return(e, args...)
Definition: error.h:99
u32 procid
process ID RFC5424 6.2.6.
Definition: syslog.h:111
unsigned int u32
Definition: types.h:88
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1097
unformat_function_t unformat_line_input
Definition: format.h:283
syslog_severity_t
Definition: syslog.h:68
int syslog_msg_send(syslog_msg_t *syslog_msg)
Send syslog message.
Definition: syslog.c:159
#define DEFAULT_MAX_MSG_SIZE
Definition: syslog.c:28
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
syslog_header_t header
header
Definition: syslog.h:98
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:194
static clib_error_t * show_syslog_filter_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:499
void syslog_add_udp_transport(vlib_main_t *vm, u32 bi)
Add UDP/IP transport layer by prepending it to existing data.
Definition: syslog_udp.c:24
syslog_facility_t
Definition: syslog.h:50
static uword unformat_syslog_severity(unformat_input_t *input, va_list *args)
Definition: syslog.c:215
static u8 * format_syslog_severity(u8 *s, va_list *args)
Definition: syslog.c:230
#define NILVALUE
Definition: syslog.c:26
void syslog_msg_sd_init(syslog_msg_t *syslog_msg, char *sd_id)
Initialize structured data element.
Definition: syslog.c:100
static u8 * format_vnet_api_errno(u8 *s, va_list *args)
Definition: api_errno.h:168
vlib_main_t * vm
Definition: in2out_ed.c:1810
u8 * msg
free-form message RFC5424 6.4.
Definition: syslog.h:105
u8 * format_unformat_input(u8 *s, va_list *va)
Definition: unformat.c:143
syslog_severity_t severity_filter
severity filter (specified severity and greater match)
Definition: syslog.h:132
#define encode_priority(f, p)
Definition: syslog.c:30
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
u16 n_vectors
Definition: node.h:397
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:342
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
static clib_error_t * syslog_init(vlib_main_t *vm)
Definition: syslog.c:606
string name[64]
Definition: ip.api:44
vnet_main_t * vnet_main
Definition: syslog.h:139
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
u8 value
Definition: qos.api:54
void syslog_msg_init(syslog_msg_t *syslog_msg, syslog_facility_t facility, syslog_severity_t severity, char *app_name, char *msgid)
Initialize syslog message header.
Definition: syslog.c:142
u32 fib_table_get_table_id(u32 fib_index, fib_protocol_t proto)
Get the Table-ID of the FIB from protocol and index.
Definition: fib_table.c:1086
syslog_main_t syslog_main
Definition: syslog.c:32
syslog_facility_t facility
facility value, part of priority
Definition: syslog.h:79
ip4_address_t src_address
IPv4 address of sender (source)
Definition: syslog.h:123
syslog message
Definition: syslog.h:95
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:492
u32 ip4_lookup_node_index
ip4-lookup node index
Definition: syslog.h:135
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:163
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
f64 timestamp
message timestamp
Definition: syslog.h:85
static u8 * syslog_msg
Definition: main.c:95
u8 ** structured_data
structured data RFC5424 6.3.
Definition: syslog.h:101
f64 timestamp
Definition: vpe_types.api:27
void syslog_msg_add_sd_param(syslog_msg_t *syslog_msg, char *name, char *fmt,...)
Add structured data elemnt parameter name-value pair RFC5424 6.3.3.
Definition: syslog.c:110
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
syslog_severity_t severity
severity value, part of priority
Definition: syslog.h:82
ip4_address_t collector
IPv4 address of remote host (destination)
Definition: syslog.h:117
u32 curr_sd_index
Definition: syslog.h:102
u32 vrf_id
Definition: nat.api:821
static int syslog_severity_filter_block(syslog_severity_t s)
Severity filter test.
Definition: syslog.h:210
static int syslog_is_enabled(void)
Check if syslog logging is enabled.
Definition: syslog.h:197
vnet_api_error_t set_syslog_sender(ip4_address_t *collector, u16 collector_port, ip4_address_t *src, u32 vrf_id, u32 max_msg_size)
Set syslog sender configuration.
Definition: syslog.c:248
static u8 * format_syslog_structured_data(u8 *s, va_list *args)
Definition: syslog.c:67
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:630
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171