1 /**
2 * collectd - src/openvpn.c
3 * Copyright (C) 2008 Doug MacEachern
4 * Copyright (C) 2009,2010 Florian octo Forster
5 * Copyright (C) 2009 Marco Chiappero
6 * Copyright (C) 2009 Fabian Schuh
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; only version 2 of the License is applicable.
11 *
12 * This program 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; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * Authors:
22 * Doug MacEachern <dougm at hyperic.com>
23 * Florian octo Forster <octo at collectd.org>
24 * Marco Chiappero <marco at absence.it>
25 * Fabian Schuh <mail at xeroc.org>
26 **/
28 #include "collectd.h"
30 #include "common.h"
31 #include "plugin.h"
33 #define V1STRING "Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since\n"
34 #define V2STRING "HEADER,CLIENT_LIST,Common Name,Real Address,Virtual Address,Bytes Received,Bytes Sent,Connected Since,Connected Since (time_t)\n"
35 #define V3STRING "HEADER CLIENT_LIST Common Name Real Address Virtual Address Bytes Received Bytes Sent Connected Since Connected Since (time_t)\n"
36 #define V4STRING "HEADER,CLIENT_LIST,Common Name,Real Address,Virtual Address,Bytes Received,Bytes Sent,Connected Since,Connected Since (time_t),Username\n"
37 #define VSSTRING "OpenVPN STATISTICS\n"
40 struct vpn_status_s
41 {
42 char *file;
43 enum
44 {
45 MULTI1 = 1, /* status-version 1 */
46 MULTI2, /* status-version 2 */
47 MULTI3, /* status-version 3 */
48 MULTI4, /* status-version 4 */
49 SINGLE = 10 /* currently no versions for single mode, maybe in the future */
50 } version;
51 char *name;
52 };
53 typedef struct vpn_status_s vpn_status_t;
55 static vpn_status_t **vpn_list = NULL;
56 static int vpn_num = 0;
58 static _Bool new_naming_schema = 0;
59 static _Bool collect_compression = 1;
60 static _Bool collect_user_count = 0;
61 static _Bool collect_individual_users = 1;
63 static const char *config_keys[] =
64 {
65 "StatusFile",
66 "Compression", /* old, deprecated name */
67 "ImprovedNamingSchema",
68 "CollectCompression",
69 "CollectUserCount",
70 "CollectIndividualUsers"
71 };
72 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
75 /* Helper function
76 * copy-n-pasted from common.c - changed delim to "," */
77 static int openvpn_strsplit (char *string, char **fields, size_t size)
78 {
79 size_t i;
80 char *ptr;
81 char *saveptr;
83 i = 0;
84 ptr = string;
85 saveptr = NULL;
86 while ((fields[i] = strtok_r (ptr, ",", &saveptr)) != NULL)
87 {
88 ptr = NULL;
89 i++;
91 if (i >= size)
92 break;
93 }
95 return (i);
96 } /* int openvpn_strsplit */
98 /* dispatches number of users */
99 static void numusers_submit (const char *pinst, const char *tinst,
100 gauge_t value)
101 {
102 value_t values[1];
103 value_list_t vl = VALUE_LIST_INIT;
105 values[0].gauge = value;
107 vl.values = values;
108 vl.values_len = STATIC_ARRAY_SIZE (values);
109 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
110 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
111 sstrncpy (vl.type, "users", sizeof (vl.type));
112 if (pinst != NULL)
113 sstrncpy (vl.plugin_instance, pinst, sizeof (vl.plugin_instance));
114 if (tinst != NULL)
115 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
117 plugin_dispatch_values (&vl);
118 } /* void numusers_submit */
120 /* dispatches stats about traffic (TCP or UDP) generated by the tunnel
121 * per single endpoint */
122 static void iostats_submit (const char *pinst, const char *tinst,
123 derive_t rx, derive_t tx)
124 {
125 value_t values[2];
126 value_list_t vl = VALUE_LIST_INIT;
128 values[0].derive = rx;
129 values[1].derive = tx;
131 /* NOTE ON THE NEW NAMING SCHEMA:
132 * using plugin_instance to identify each vpn config (and
133 * status) file; using type_instance to identify the endpoint
134 * host when in multimode, traffic or overhead when in single.
135 */
137 vl.values = values;
138 vl.values_len = STATIC_ARRAY_SIZE (values);
139 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
140 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
141 if (pinst != NULL)
142 sstrncpy (vl.plugin_instance, pinst,
143 sizeof (vl.plugin_instance));
144 sstrncpy (vl.type, "if_octets", sizeof (vl.type));
145 if (tinst != NULL)
146 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
148 plugin_dispatch_values (&vl);
149 } /* void traffic_submit */
151 /* dispatches stats about data compression shown when in single mode */
152 static void compression_submit (const char *pinst, const char *tinst,
153 derive_t uncompressed, derive_t compressed)
154 {
155 value_t values[2];
156 value_list_t vl = VALUE_LIST_INIT;
158 values[0].derive = uncompressed;
159 values[1].derive = compressed;
161 vl.values = values;
162 vl.values_len = STATIC_ARRAY_SIZE (values);
163 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
164 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
165 if (pinst != NULL)
166 sstrncpy (vl.plugin_instance, pinst,
167 sizeof (vl.plugin_instance));
168 sstrncpy (vl.type, "compression", sizeof (vl.type));
169 if (tinst != NULL)
170 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
172 plugin_dispatch_values (&vl);
173 } /* void compression_submit */
175 static int single_read (const char *name, FILE *fh)
176 {
177 char buffer[1024];
178 char *fields[4];
179 const int max_fields = STATIC_ARRAY_SIZE (fields);
180 int fields_num, read = 0;
182 derive_t link_rx, link_tx;
183 derive_t tun_rx, tun_tx;
184 derive_t pre_compress, post_compress;
185 derive_t pre_decompress, post_decompress;
186 derive_t overhead_rx, overhead_tx;
188 link_rx = 0;
189 link_tx = 0;
190 tun_rx = 0;
191 tun_tx = 0;
192 pre_compress = 0;
193 post_compress = 0;
194 pre_decompress = 0;
195 post_decompress = 0;
197 while (fgets (buffer, sizeof (buffer), fh) != NULL)
198 {
199 fields_num = openvpn_strsplit (buffer, fields, max_fields);
201 /* status file is generated by openvpn/sig.c:print_status()
202 * http://svn.openvpn.net/projects/openvpn/trunk/openvpn/sig.c
203 *
204 * The line we're expecting has 2 fields. We ignore all lines
205 * with more or less fields.
206 */
207 if (fields_num != 2)
208 {
209 continue;
210 }
212 if (strcmp (fields[0], "TUN/TAP read bytes") == 0)
213 {
214 /* read from the system and sent over the tunnel */
215 tun_tx = atoll (fields[1]);
216 }
217 else if (strcmp (fields[0], "TUN/TAP write bytes") == 0)
218 {
219 /* read from the tunnel and written in the system */
220 tun_rx = atoll (fields[1]);
221 }
222 else if (strcmp (fields[0], "TCP/UDP read bytes") == 0)
223 {
224 link_rx = atoll (fields[1]);
225 }
226 else if (strcmp (fields[0], "TCP/UDP write bytes") == 0)
227 {
228 link_tx = atoll (fields[1]);
229 }
230 else if (strcmp (fields[0], "pre-compress bytes") == 0)
231 {
232 pre_compress = atoll (fields[1]);
233 }
234 else if (strcmp (fields[0], "post-compress bytes") == 0)
235 {
236 post_compress = atoll (fields[1]);
237 }
238 else if (strcmp (fields[0], "pre-decompress bytes") == 0)
239 {
240 pre_decompress = atoll (fields[1]);
241 }
242 else if (strcmp (fields[0], "post-decompress bytes") == 0)
243 {
244 post_decompress = atoll (fields[1]);
245 }
246 }
248 iostats_submit (name, "traffic", link_rx, link_tx);
250 /* we need to force this order to avoid negative values with these unsigned */
251 overhead_rx = (((link_rx - pre_decompress) + post_decompress) - tun_rx);
252 overhead_tx = (((link_tx - post_compress) + pre_compress) - tun_tx);
254 iostats_submit (name, "overhead", overhead_rx, overhead_tx);
256 if (collect_compression)
257 {
258 compression_submit (name, "data_in", post_decompress, pre_decompress);
259 compression_submit (name, "data_out", pre_compress, post_compress);
260 }
262 read = 1;
264 return (read);
265 } /* int single_read */
267 /* for reading status version 1 */
268 static int multi1_read (const char *name, FILE *fh)
269 {
270 char buffer[1024];
271 char *fields[10];
272 int fields_num, found_header = 0;
273 long long sum_users = 0;
275 /* read the file until the "ROUTING TABLE" line is found (no more info after) */
276 while (fgets (buffer, sizeof (buffer), fh) != NULL)
277 {
278 if (strcmp (buffer, "ROUTING TABLE\n") == 0)
279 break;
281 if (strcmp (buffer, V1STRING) == 0)
282 {
283 found_header = 1;
284 continue;
285 }
287 /* skip the first lines until the client list section is found */
288 if (found_header == 0)
289 /* we can't start reading data until this string is found */
290 continue;
292 fields_num = openvpn_strsplit (buffer,
293 fields, STATIC_ARRAY_SIZE (fields));
294 if (fields_num < 4)
295 continue;
297 if (collect_user_count)
298 /* If so, sum all users, ignore the individuals*/
299 {
300 sum_users += 1;
301 }
302 if (collect_individual_users)
303 {
304 if (new_naming_schema)
305 {
306 iostats_submit (name, /* vpn instance */
307 fields[0], /* "Common Name" */
308 atoll (fields[2]), /* "Bytes Received" */
309 atoll (fields[3])); /* "Bytes Sent" */
310 }
311 else
312 {
313 iostats_submit (fields[0], /* "Common Name" */
314 NULL, /* unused when in multimode */
315 atoll (fields[2]), /* "Bytes Received" */
316 atoll (fields[3])); /* "Bytes Sent" */
317 }
318 }
319 }
321 if (ferror (fh))
322 return (0);
324 if (collect_user_count)
325 numusers_submit(name, name, sum_users);
327 return (1);
328 } /* int multi1_read */
330 /* for reading status version 2 */
331 static int multi2_read (const char *name, FILE *fh)
332 {
333 char buffer[1024];
334 char *fields[10];
335 const int max_fields = STATIC_ARRAY_SIZE (fields);
336 int fields_num, read = 0;
337 long long sum_users = 0;
339 while (fgets (buffer, sizeof (buffer), fh) != NULL)
340 {
341 fields_num = openvpn_strsplit (buffer, fields, max_fields);
343 /* status file is generated by openvpn/multi.c:multi_print_status()
344 * http://svn.openvpn.net/projects/openvpn/trunk/openvpn/multi.c
345 *
346 * The line we're expecting has 8 fields. We ignore all lines
347 * with more or less fields.
348 */
349 if (fields_num != 8)
350 continue;
352 if (strcmp (fields[0], "CLIENT_LIST") != 0)
353 continue;
355 if (collect_user_count)
356 /* If so, sum all users, ignore the individuals*/
357 {
358 sum_users += 1;
359 }
360 if (collect_individual_users)
361 {
362 if (new_naming_schema)
363 {
364 /* plugin inst = file name, type inst = fields[1] */
365 iostats_submit (name, /* vpn instance */
366 fields[1], /* "Common Name" */
367 atoll (fields[4]), /* "Bytes Received" */
368 atoll (fields[5])); /* "Bytes Sent" */
369 }
370 else
371 {
372 /* plugin inst = fields[1], type inst = "" */
373 iostats_submit (fields[1], /* "Common Name" */
374 NULL, /* unused when in multimode */
375 atoll (fields[4]), /* "Bytes Received" */
376 atoll (fields[5])); /* "Bytes Sent" */
377 }
378 }
380 read = 1;
381 }
383 if (collect_user_count)
384 {
385 numusers_submit(name, name, sum_users);
386 read = 1;
387 }
389 return (read);
390 } /* int multi2_read */
392 /* for reading status version 3 */
393 static int multi3_read (const char *name, FILE *fh)
394 {
395 char buffer[1024];
396 char *fields[15];
397 const int max_fields = STATIC_ARRAY_SIZE (fields);
398 int fields_num, read = 0;
399 long long sum_users = 0;
401 while (fgets (buffer, sizeof (buffer), fh) != NULL)
402 {
403 fields_num = strsplit (buffer, fields, max_fields);
405 /* status file is generated by openvpn/multi.c:multi_print_status()
406 * http://svn.openvpn.net/projects/openvpn/trunk/openvpn/multi.c
407 *
408 * The line we're expecting has 12 fields. We ignore all lines
409 * with more or less fields.
410 */
411 if (fields_num != 12)
412 {
413 continue;
414 }
415 else
416 {
417 if (strcmp (fields[0], "CLIENT_LIST") != 0)
418 continue;
420 if (collect_user_count)
421 /* If so, sum all users, ignore the individuals*/
422 {
423 sum_users += 1;
424 }
426 if (collect_individual_users)
427 {
428 if (new_naming_schema)
429 {
430 iostats_submit (name, /* vpn instance */
431 fields[1], /* "Common Name" */
432 atoll (fields[4]), /* "Bytes Received" */
433 atoll (fields[5])); /* "Bytes Sent" */
434 }
435 else
436 {
437 iostats_submit (fields[1], /* "Common Name" */
438 NULL, /* unused when in multimode */
439 atoll (fields[4]), /* "Bytes Received" */
440 atoll (fields[5])); /* "Bytes Sent" */
441 }
442 }
444 read = 1;
445 }
446 }
448 if (collect_user_count)
449 {
450 numusers_submit(name, name, sum_users);
451 read = 1;
452 }
454 return (read);
455 } /* int multi3_read */
457 /* for reading status version 4 */
458 static int multi4_read (const char *name, FILE *fh)
459 {
460 char buffer[1024];
461 char *fields[11];
462 const int max_fields = STATIC_ARRAY_SIZE (fields);
463 int fields_num, read = 0;
464 long long sum_users = 0;
466 while (fgets (buffer, sizeof (buffer), fh) != NULL)
467 {
468 fields_num = openvpn_strsplit (buffer, fields, max_fields);
470 /* status file is generated by openvpn/multi.c:multi_print_status()
471 * http://svn.openvpn.net/projects/openvpn/trunk/openvpn/multi.c
472 *
473 * The line we're expecting has 9 fields. We ignore all lines
474 * with more or less fields.
475 */
476 if (fields_num != 9)
477 continue;
480 if (strcmp (fields[0], "CLIENT_LIST") != 0)
481 continue;
484 if (collect_user_count)
485 /* If so, sum all users, ignore the individuals*/
486 {
487 sum_users += 1;
488 }
489 if (collect_individual_users)
490 {
491 if (new_naming_schema)
492 {
493 /* plugin inst = file name, type inst = fields[1] */
494 iostats_submit (name, /* vpn instance */
495 fields[1], /* "Common Name" */
496 atoll (fields[4]), /* "Bytes Received" */
497 atoll (fields[5])); /* "Bytes Sent" */
498 }
499 else
500 {
501 /* plugin inst = fields[1], type inst = "" */
502 iostats_submit (fields[1], /* "Common Name" */
503 NULL, /* unused when in multimode */
504 atoll (fields[4]), /* "Bytes Received" */
505 atoll (fields[5])); /* "Bytes Sent" */
506 }
507 }
509 read = 1;
510 }
512 if (collect_user_count)
513 {
514 numusers_submit(name, name, sum_users);
515 read = 1;
516 }
518 return (read);
519 } /* int multi4_read */
521 /* read callback */
522 static int openvpn_read (void)
523 {
524 FILE *fh;
525 int read;
527 read = 0;
529 if (vpn_num == 0)
530 return (0);
532 /* call the right read function for every status entry in the list */
533 for (int i = 0; i < vpn_num; i++)
534 {
535 int vpn_read = 0;
537 fh = fopen (vpn_list[i]->file, "r");
538 if (fh == NULL)
539 {
540 char errbuf[1024];
541 WARNING ("openvpn plugin: fopen(%s) failed: %s", vpn_list[i]->file,
542 sstrerror (errno, errbuf, sizeof (errbuf)));
544 continue;
545 }
547 switch (vpn_list[i]->version)
548 {
549 case SINGLE:
550 vpn_read = single_read(vpn_list[i]->name, fh);
551 break;
553 case MULTI1:
554 vpn_read = multi1_read(vpn_list[i]->name, fh);
555 break;
557 case MULTI2:
558 vpn_read = multi2_read(vpn_list[i]->name, fh);
559 break;
561 case MULTI3:
562 vpn_read = multi3_read(vpn_list[i]->name, fh);
563 break;
565 case MULTI4:
566 vpn_read = multi4_read(vpn_list[i]->name, fh);
567 break;
568 }
570 fclose (fh);
571 read += vpn_read;
572 }
574 return (read ? 0 : -1);
575 } /* int openvpn_read */
577 static int version_detect (const char *filename)
578 {
579 FILE *fh;
580 char buffer[1024];
581 int version = 0;
583 /* Sanity checking. We're called from the config handling routine, so
584 * better play it save. */
585 if ((filename == NULL) || (*filename == 0))
586 return (0);
588 fh = fopen (filename, "r");
589 if (fh == NULL)
590 {
591 char errbuf[1024];
592 WARNING ("openvpn plugin: Unable to read \"%s\": %s", filename,
593 sstrerror (errno, errbuf, sizeof (errbuf)));
594 return (0);
595 }
597 /* now search for the specific multimode data format */
598 while ((fgets (buffer, sizeof (buffer), fh)) != NULL)
599 {
600 /* we look at the first line searching for SINGLE mode configuration */
601 if (strcmp (buffer, VSSTRING) == 0)
602 {
603 DEBUG ("openvpn plugin: found status file version SINGLE");
604 version = SINGLE;
605 break;
606 }
607 /* searching for multi version 1 */
608 else if (strcmp (buffer, V1STRING) == 0)
609 {
610 DEBUG ("openvpn plugin: found status file version MULTI1");
611 version = MULTI1;
612 break;
613 }
614 /* searching for multi version 2 */
615 else if (strcmp (buffer, V2STRING) == 0)
616 {
617 DEBUG ("openvpn plugin: found status file version MULTI2");
618 version = MULTI2;
619 break;
620 }
621 /* searching for multi version 3 */
622 else if (strcmp (buffer, V3STRING) == 0)
623 {
624 DEBUG ("openvpn plugin: found status file version MULTI3");
625 version = MULTI3;
626 break;
627 }
628 /* searching for multi version 4 */
629 else if (strcmp (buffer, V4STRING) == 0)
630 {
631 DEBUG ("openvpn plugin: found status file version MULTI4");
632 version = MULTI4;
633 break;
634 }
635 }
637 if (version == 0)
638 {
639 /* This is only reached during configuration, so complaining to
640 * the user is in order. */
641 NOTICE ("openvpn plugin: %s: Unknown file format, please "
642 "report this as bug. Make sure to include "
643 "your status file, so the plugin can "
644 "be adapted.", filename);
645 }
647 fclose (fh);
649 return version;
650 } /* int version_detect */
652 static int openvpn_config (const char *key, const char *value)
653 {
654 if (strcasecmp ("StatusFile", key) == 0)
655 {
656 char *status_file, *status_name, *filename;
657 int status_version;
658 vpn_status_t *temp;
660 /* try to detect the status file format */
661 status_version = version_detect (value);
663 if (status_version == 0)
664 {
665 WARNING ("openvpn plugin: unable to detect status version, "
666 "discarding status file \"%s\".", value);
667 return (1);
668 }
670 status_file = sstrdup (value);
671 if (status_file == NULL)
672 {
673 char errbuf[1024];
674 WARNING ("openvpn plugin: sstrdup failed: %s",
675 sstrerror (errno, errbuf, sizeof (errbuf)));
676 return (1);
677 }
679 /* it determines the file name as string starting at location filename + 1 */
680 filename = strrchr (status_file, (int) '/');
681 if (filename == NULL)
682 {
683 /* status_file is already the file name only */
684 status_name = status_file;
685 }
686 else
687 {
688 /* doesn't waste memory, uses status_file starting at filename + 1 */
689 status_name = filename + 1;
690 }
692 /* scan the list looking for a clone */
693 for (int i = 0; i < vpn_num; i++)
694 {
695 if (strcasecmp (vpn_list[i]->name, status_name) == 0)
696 {
697 WARNING ("openvpn plugin: status filename \"%s\" "
698 "already used, please choose a "
699 "different one.", status_name);
700 sfree (status_file);
701 return (1);
702 }
703 }
705 /* create a new vpn element since file, version and name are ok */
706 temp = malloc (sizeof (*temp));
707 if (temp == NULL)
708 {
709 char errbuf[1024];
710 ERROR ("openvpn plugin: malloc failed: %s",
711 sstrerror (errno, errbuf, sizeof (errbuf)));
712 sfree (status_file);
713 return (1);
714 }
715 temp->file = status_file;
716 temp->version = status_version;
717 temp->name = status_name;
719 vpn_status_t **tmp_list = realloc (vpn_list, (vpn_num + 1) * sizeof (*vpn_list));
720 if (tmp_list == NULL)
721 {
722 char errbuf[1024];
723 ERROR ("openvpn plugin: realloc failed: %s",
724 sstrerror (errno, errbuf, sizeof (errbuf)));
726 sfree (vpn_list);
727 sfree (temp->file);
728 sfree (temp);
729 return (1);
730 }
731 vpn_list = tmp_list;
733 vpn_list[vpn_num] = temp;
734 vpn_num++;
736 DEBUG ("openvpn plugin: status file \"%s\" added", temp->file);
738 } /* if (strcasecmp ("StatusFile", key) == 0) */
739 else if ((strcasecmp ("CollectCompression", key) == 0)
740 || (strcasecmp ("Compression", key) == 0)) /* old, deprecated name */
741 {
742 if (IS_FALSE (value))
743 collect_compression = 0;
744 else
745 collect_compression = 1;
746 } /* if (strcasecmp ("CollectCompression", key) == 0) */
747 else if (strcasecmp ("ImprovedNamingSchema", key) == 0)
748 {
749 if (IS_TRUE (value))
750 {
751 DEBUG ("openvpn plugin: using the new naming schema");
752 new_naming_schema = 1;
753 }
754 else
755 {
756 new_naming_schema = 0;
757 }
758 } /* if (strcasecmp ("ImprovedNamingSchema", key) == 0) */
759 else if (strcasecmp("CollectUserCount", key) == 0)
760 {
761 if (IS_TRUE(value))
762 collect_user_count = 1;
763 else
764 collect_user_count = 0;
765 } /* if (strcasecmp("CollectUserCount", key) == 0) */
766 else if (strcasecmp("CollectIndividualUsers", key) == 0)
767 {
768 if (IS_FALSE (value))
769 collect_individual_users = 0;
770 else
771 collect_individual_users = 1;
772 } /* if (strcasecmp("CollectIndividualUsers", key) == 0) */
773 else
774 {
775 return (-1);
776 }
778 return (0);
779 } /* int openvpn_config */
781 /* shutdown callback */
782 static int openvpn_shutdown (void)
783 {
784 for (int i = 0; i < vpn_num; i++)
785 {
786 sfree (vpn_list[i]->file);
787 sfree (vpn_list[i]);
788 }
790 sfree (vpn_list);
792 return (0);
793 } /* int openvpn_shutdown */
795 static int openvpn_init (void)
796 {
797 if (!collect_individual_users
798 && !collect_compression
799 && !collect_user_count)
800 {
801 WARNING ("OpenVPN plugin: Neither `CollectIndividualUsers', "
802 "`CollectCompression', nor `CollectUserCount' is true. There's no "
803 "data left to collect.");
804 return (-1);
805 }
807 plugin_register_read ("openvpn", openvpn_read);
808 plugin_register_shutdown ("openvpn", openvpn_shutdown);
810 return (0);
811 } /* int openvpn_init */
813 void module_register (void)
814 {
815 plugin_register_config ("openvpn", openvpn_config,
816 config_keys, config_keys_num);
817 plugin_register_init ("openvpn", openvpn_init);
818 } /* void module_register */
820 /* vim: set sw=2 ts=2 : */