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"
29 #include "common.h"
30 #include "plugin.h"
32 #define V1STRING "Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since\n"
33 #define V2STRING "HEADER,CLIENT_LIST,Common Name,Real Address,Virtual Address,Bytes Received,Bytes Sent,Connected Since,Connected Since (time_t)\n"
34 #define V3STRING "HEADER CLIENT_LIST Common Name Real Address Virtual Address Bytes Received Bytes Sent Connected Since Connected Since (time_t)\n"
35 #define V4STRING "HEADER,CLIENT_LIST,Common Name,Real Address,Virtual Address,Bytes Received,Bytes Sent,Connected Since,Connected Since (time_t),Username\n"
36 #define VSSTRING "OpenVPN STATISTICS\n"
39 struct vpn_status_s
40 {
41 char *file;
42 enum
43 {
44 MULTI1 = 1, /* status-version 1 */
45 MULTI2, /* status-version 2 */
46 MULTI3, /* status-version 3 */
47 MULTI4, /* status-version 4 */
48 SINGLE = 10 /* currently no versions for single mode, maybe in the future */
49 } version;
50 char *name;
51 };
52 typedef struct vpn_status_s vpn_status_t;
54 static vpn_status_t **vpn_list = NULL;
55 static int vpn_num = 0;
57 static _Bool new_naming_schema = 0;
58 static _Bool collect_compression = 1;
59 static _Bool collect_user_count = 0;
60 static _Bool collect_individual_users = 1;
62 static const char *config_keys[] =
63 {
64 "StatusFile",
65 "Compression", /* old, deprecated name */
66 "ImprovedNamingSchema",
67 "CollectCompression",
68 "CollectUserCount",
69 "CollectIndividualUsers"
70 };
71 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
74 /* Helper function
75 * copy-n-pasted from common.c - changed delim to "," */
76 static int openvpn_strsplit (char *string, char **fields, size_t size)
77 {
78 size_t i;
79 char *ptr;
80 char *saveptr;
82 i = 0;
83 ptr = string;
84 saveptr = NULL;
85 while ((fields[i] = strtok_r (ptr, ",", &saveptr)) != NULL)
86 {
87 ptr = NULL;
88 i++;
90 if (i >= size)
91 break;
92 }
94 return (i);
95 } /* int openvpn_strsplit */
97 /* dispatches number of users */
98 static void numusers_submit (char *pinst, char *tinst, gauge_t value)
99 {
100 value_t values[1];
101 value_list_t vl = VALUE_LIST_INIT;
103 values[0].gauge = value;
105 vl.values = values;
106 vl.values_len = STATIC_ARRAY_SIZE (values);
107 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
108 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
109 sstrncpy (vl.type, "users", sizeof (vl.type));
110 if (pinst != NULL)
111 sstrncpy (vl.plugin_instance, pinst, sizeof (vl.plugin_instance));
112 if (tinst != NULL)
113 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
115 plugin_dispatch_values (&vl);
116 } /* void numusers_submit */
118 /* dispatches stats about traffic (TCP or UDP) generated by the tunnel per single endpoint */
119 static void iostats_submit (char *pinst, char *tinst, derive_t rx, derive_t tx)
120 {
121 value_t values[2];
122 value_list_t vl = VALUE_LIST_INIT;
124 values[0].derive = rx;
125 values[1].derive = tx;
127 /* NOTE ON THE NEW NAMING SCHEMA:
128 * using plugin_instance to identify each vpn config (and
129 * status) file; using type_instance to identify the endpoint
130 * host when in multimode, traffic or overhead when in single.
131 */
133 vl.values = values;
134 vl.values_len = STATIC_ARRAY_SIZE (values);
135 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
136 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
137 if (pinst != NULL)
138 sstrncpy (vl.plugin_instance, pinst,
139 sizeof (vl.plugin_instance));
140 sstrncpy (vl.type, "if_octets", sizeof (vl.type));
141 if (tinst != NULL)
142 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
144 plugin_dispatch_values (&vl);
145 } /* void traffic_submit */
147 /* dispatches stats about data compression shown when in single mode */
148 static void compression_submit (char *pinst, char *tinst,
149 derive_t uncompressed, derive_t compressed)
150 {
151 value_t values[2];
152 value_list_t vl = VALUE_LIST_INIT;
154 values[0].derive = uncompressed;
155 values[1].derive = compressed;
157 vl.values = values;
158 vl.values_len = STATIC_ARRAY_SIZE (values);
159 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
160 sstrncpy (vl.plugin, "openvpn", sizeof (vl.plugin));
161 if (pinst != NULL)
162 sstrncpy (vl.plugin_instance, pinst,
163 sizeof (vl.plugin_instance));
164 sstrncpy (vl.type, "compression", sizeof (vl.type));
165 if (tinst != NULL)
166 sstrncpy (vl.type_instance, tinst, sizeof (vl.type_instance));
168 plugin_dispatch_values (&vl);
169 } /* void compression_submit */
171 static int single_read (char *name, FILE *fh)
172 {
173 char buffer[1024];
174 char *fields[4];
175 const int max_fields = STATIC_ARRAY_SIZE (fields);
176 int fields_num, read = 0;
178 derive_t link_rx, link_tx;
179 derive_t tun_rx, tun_tx;
180 derive_t pre_compress, post_compress;
181 derive_t pre_decompress, post_decompress;
182 derive_t overhead_rx, overhead_tx;
184 link_rx = 0;
185 link_tx = 0;
186 tun_rx = 0;
187 tun_tx = 0;
188 pre_compress = 0;
189 post_compress = 0;
190 pre_decompress = 0;
191 post_decompress = 0;
192 overhead_rx = 0;
193 overhead_tx = 0;
195 while (fgets (buffer, sizeof (buffer), fh) != NULL)
196 {
197 fields_num = openvpn_strsplit (buffer, fields, max_fields);
199 /* status file is generated by openvpn/sig.c:print_status()
200 * http://svn.openvpn.net/projects/openvpn/trunk/openvpn/sig.c
201 *
202 * The line we're expecting has 2 fields. We ignore all lines
203 * with more or less fields.
204 */
205 if (fields_num != 2)
206 {
207 continue;
208 }
210 if (strcmp (fields[0], "TUN/TAP read bytes") == 0)
211 {
212 /* read from the system and sent over the tunnel */
213 tun_tx = atoll (fields[1]);
214 }
215 else if (strcmp (fields[0], "TUN/TAP write bytes") == 0)
216 {
217 /* read from the tunnel and written in the system */
218 tun_rx = atoll (fields[1]);
219 }
220 else if (strcmp (fields[0], "TCP/UDP read bytes") == 0)
221 {
222 link_rx = atoll (fields[1]);
223 }
224 else if (strcmp (fields[0], "TCP/UDP write bytes") == 0)
225 {
226 link_tx = atoll (fields[1]);
227 }
228 else if (strcmp (fields[0], "pre-compress bytes") == 0)
229 {
230 pre_compress = atoll (fields[1]);
231 }
232 else if (strcmp (fields[0], "post-compress bytes") == 0)
233 {
234 post_compress = atoll (fields[1]);
235 }
236 else if (strcmp (fields[0], "pre-decompress bytes") == 0)
237 {
238 pre_decompress = atoll (fields[1]);
239 }
240 else if (strcmp (fields[0], "post-decompress bytes") == 0)
241 {
242 post_decompress = atoll (fields[1]);
243 }
244 }
246 iostats_submit (name, "traffic", link_rx, link_tx);
248 /* we need to force this order to avoid negative values with these unsigned */
249 overhead_rx = (((link_rx - pre_decompress) + post_decompress) - tun_rx);
250 overhead_tx = (((link_tx - post_compress) + pre_compress) - tun_tx);
252 iostats_submit (name, "overhead", overhead_rx, overhead_tx);
254 if (collect_compression)
255 {
256 compression_submit (name, "data_in", post_decompress, pre_decompress);
257 compression_submit (name, "data_out", pre_compress, post_compress);
258 }
260 read = 1;
262 return (read);
263 } /* int single_read */
265 /* for reading status version 1 */
266 static int multi1_read (char *name, FILE *fh)
267 {
268 char buffer[1024];
269 char *fields[10];
270 int fields_num, read = 0, found_header = 0;
271 long long sum_users = 0;
273 /* read the file until the "ROUTING TABLE" line is found (no more info after) */
274 while (fgets (buffer, sizeof (buffer), fh) != NULL)
275 {
276 if (strcmp (buffer, "ROUTING TABLE\n") == 0)
277 break;
279 if (strcmp (buffer, V1STRING) == 0)
280 {
281 found_header = 1;
282 continue;
283 }
285 /* skip the first lines until the client list section is found */
286 if (found_header == 0)
287 /* we can't start reading data until this string is found */
288 continue;
290 fields_num = openvpn_strsplit (buffer,
291 fields, STATIC_ARRAY_SIZE (fields));
292 if (fields_num < 4)
293 continue;
295 if (collect_user_count)
296 /* If so, sum all users, ignore the individuals*/
297 {
298 sum_users += 1;
299 }
300 if (collect_individual_users)
301 {
302 if (new_naming_schema)
303 {
304 iostats_submit (name, /* vpn instance */
305 fields[0], /* "Common Name" */
306 atoll (fields[2]), /* "Bytes Received" */
307 atoll (fields[3])); /* "Bytes Sent" */
308 }
309 else
310 {
311 iostats_submit (fields[0], /* "Common Name" */
312 NULL, /* unused when in multimode */
313 atoll (fields[2]), /* "Bytes Received" */
314 atoll (fields[3])); /* "Bytes Sent" */
315 }
316 }
318 read = 1;
319 }
321 if (collect_user_count)
322 {
323 numusers_submit(name, name, sum_users);
324 read = 1;
325 }
327 return (read);
328 } /* int multi1_read */
330 /* for reading status version 2 */
331 static int multi2_read (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 (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 (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 i, vpn_read, read;
527 vpn_read = read = 0;
529 /* call the right read function for every status entry in the list */
530 for (i = 0; i < vpn_num; i++)
531 {
532 fh = fopen (vpn_list[i]->file, "r");
533 if (fh == NULL)
534 {
535 char errbuf[1024];
536 WARNING ("openvpn plugin: fopen(%s) failed: %s", vpn_list[i]->file,
537 sstrerror (errno, errbuf, sizeof (errbuf)));
539 continue;
540 }
542 switch (vpn_list[i]->version)
543 {
544 case SINGLE:
545 vpn_read = single_read(vpn_list[i]->name, fh);
546 break;
548 case MULTI1:
549 vpn_read = multi1_read(vpn_list[i]->name, fh);
550 break;
552 case MULTI2:
553 vpn_read = multi2_read(vpn_list[i]->name, fh);
554 break;
556 case MULTI3:
557 vpn_read = multi3_read(vpn_list[i]->name, fh);
558 break;
560 case MULTI4:
561 vpn_read = multi4_read(vpn_list[i]->name, fh);
562 break;
563 }
565 fclose (fh);
566 read += vpn_read;
567 }
569 return (read ? 0 : -1);
570 } /* int openvpn_read */
572 static int version_detect (const char *filename)
573 {
574 FILE *fh;
575 char buffer[1024];
576 int version = 0;
578 /* Sanity checking. We're called from the config handling routine, so
579 * better play it save. */
580 if ((filename == NULL) || (*filename == 0))
581 return (0);
583 fh = fopen (filename, "r");
584 if (fh == NULL)
585 {
586 char errbuf[1024];
587 WARNING ("openvpn plugin: Unable to read \"%s\": %s", filename,
588 sstrerror (errno, errbuf, sizeof (errbuf)));
589 return (0);
590 }
592 /* now search for the specific multimode data format */
593 while ((fgets (buffer, sizeof (buffer), fh)) != NULL)
594 {
595 /* we look at the first line searching for SINGLE mode configuration */
596 if (strcmp (buffer, VSSTRING) == 0)
597 {
598 DEBUG ("openvpn plugin: found status file version SINGLE");
599 version = SINGLE;
600 break;
601 }
602 /* searching for multi version 1 */
603 else if (strcmp (buffer, V1STRING) == 0)
604 {
605 DEBUG ("openvpn plugin: found status file version MULTI1");
606 version = MULTI1;
607 break;
608 }
609 /* searching for multi version 2 */
610 else if (strcmp (buffer, V2STRING) == 0)
611 {
612 DEBUG ("openvpn plugin: found status file version MULTI2");
613 version = MULTI2;
614 break;
615 }
616 /* searching for multi version 3 */
617 else if (strcmp (buffer, V3STRING) == 0)
618 {
619 DEBUG ("openvpn plugin: found status file version MULTI3");
620 version = MULTI3;
621 break;
622 }
623 /* searching for multi version 4 */
624 else if (strcmp (buffer, V4STRING) == 0)
625 {
626 DEBUG ("openvpn plugin: found status file version MULTI4");
627 version = MULTI4;
628 break;
629 }
630 }
632 if (version == 0)
633 {
634 /* This is only reached during configuration, so complaining to
635 * the user is in order. */
636 NOTICE ("openvpn plugin: %s: Unknown file format, please "
637 "report this as bug. Make sure to include "
638 "your status file, so the plugin can "
639 "be adapted.", filename);
640 }
642 fclose (fh);
644 return version;
645 } /* int version_detect */
647 static int openvpn_config (const char *key, const char *value)
648 {
649 if (strcasecmp ("StatusFile", key) == 0)
650 {
651 char *status_file, *status_name, *filename;
652 int status_version, i;
653 vpn_status_t *temp;
655 /* try to detect the status file format */
656 status_version = version_detect (value);
658 if (status_version == 0)
659 {
660 WARNING ("openvpn plugin: unable to detect status version, \
661 discarding status file \"%s\".", value);
662 return (1);
663 }
665 status_file = sstrdup (value);
666 if (status_file == NULL)
667 {
668 char errbuf[1024];
669 WARNING ("openvpn plugin: sstrdup failed: %s",
670 sstrerror (errno, errbuf, sizeof (errbuf)));
671 return (1);
672 }
674 /* it determines the file name as string starting at location filename + 1 */
675 filename = strrchr (status_file, (int) '/');
676 if (filename == NULL)
677 {
678 /* status_file is already the file name only */
679 status_name = status_file;
680 }
681 else
682 {
683 /* doesn't waste memory, uses status_file starting at filename + 1 */
684 status_name = filename + 1;
685 }
687 /* scan the list looking for a clone */
688 for (i = 0; i < vpn_num; i++)
689 {
690 if (strcasecmp (vpn_list[i]->name, status_name) == 0)
691 {
692 WARNING ("openvpn plugin: status filename \"%s\" "
693 "already used, please choose a "
694 "different one.", status_name);
695 sfree (status_file);
696 return (1);
697 }
698 }
700 /* create a new vpn element since file, version and name are ok */
701 temp = (vpn_status_t *) malloc (sizeof (vpn_status_t));
702 temp->file = status_file;
703 temp->version = status_version;
704 temp->name = status_name;
706 vpn_list = (vpn_status_t **) realloc (vpn_list, (vpn_num + 1) * sizeof (vpn_status_t *));
707 if (vpn_list == NULL)
708 {
709 char errbuf[1024];
710 ERROR ("openvpn plugin: malloc failed: %s",
711 sstrerror (errno, errbuf, sizeof (errbuf)));
713 sfree (temp->file);
714 sfree (temp);
715 return (1);
716 }
718 vpn_list[vpn_num] = temp;
719 vpn_num++;
721 DEBUG ("openvpn plugin: status file \"%s\" added", temp->file);
723 } /* if (strcasecmp ("StatusFile", key) == 0) */
724 else if ((strcasecmp ("CollectCompression", key) == 0)
725 || (strcasecmp ("Compression", key) == 0)) /* old, deprecated name */
726 {
727 if (IS_FALSE (value))
728 collect_compression = 0;
729 else
730 collect_compression = 1;
731 } /* if (strcasecmp ("CollectCompression", key) == 0) */
732 else if (strcasecmp ("ImprovedNamingSchema", key) == 0)
733 {
734 if (IS_TRUE (value))
735 {
736 DEBUG ("openvpn plugin: using the new naming schema");
737 new_naming_schema = 1;
738 }
739 else
740 {
741 new_naming_schema = 0;
742 }
743 } /* if (strcasecmp ("ImprovedNamingSchema", key) == 0) */
744 else if (strcasecmp("CollectUserCount", key) == 0)
745 {
746 if (IS_TRUE(value))
747 collect_user_count = 1;
748 else
749 collect_user_count = 0;
750 } /* if (strcasecmp("CollectUserCount", key) == 0) */
751 else if (strcasecmp("CollectIndividualUsers", key) == 0)
752 {
753 if (IS_FALSE (value))
754 collect_individual_users = 0;
755 else
756 collect_individual_users = 1;
757 } /* if (strcasecmp("CollectIndividualUsers", key) == 0) */
758 else
759 {
760 return (-1);
761 }
763 return (0);
764 } /* int openvpn_config */
766 /* shutdown callback */
767 static int openvpn_shutdown (void)
768 {
769 int i;
771 for (i = 0; i < vpn_num; i++)
772 {
773 sfree (vpn_list[i]->file);
774 sfree (vpn_list[i]);
775 }
777 sfree (vpn_list);
779 return (0);
780 } /* int openvpn_shutdown */
782 static int openvpn_init (void)
783 {
784 if (!collect_individual_users
785 && !collect_compression
786 && !collect_user_count)
787 {
788 WARNING ("OpenVPN plugin: Neither `CollectIndividualUsers', "
789 "`CollectCompression', nor `CollectUserCount' is true. There's no "
790 "data left to collect.");
791 return (-1);
792 }
794 plugin_register_read ("openvpn", openvpn_read);
795 plugin_register_shutdown ("openvpn", openvpn_shutdown);
797 return (0);
798 } /* int openvpn_init */
800 void module_register (void)
801 {
802 plugin_register_config ("openvpn", openvpn_config,
803 config_keys, config_keys_num);
804 plugin_register_init ("openvpn", openvpn_init);
805 } /* void module_register */
807 /* vim: set sw=2 ts=2 : */