2 * collectd - src/snmp.c
3 * Copyright (C) 2007-2012 Florian octo Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
30 #include "utils_complain.h"
34 #include <net-snmp/net-snmp-config.h>
35 #include <net-snmp/net-snmp-includes.h>
40 * Private data structes
47 typedef struct oid_s oid_t;
51 char string[DATA_MAX_NAME_LEN];
54 typedef union instance_u instance_t;
56 struct data_definition_s
58 char *name; /* used to reference this from the `Collect' option */
59 char *type; /* used to find the data_set */
62 char *instance_prefix;
67 struct data_definition_s *next;
72 typedef struct data_definition_s data_definition_t;
74 struct host_definition_s
80 /* snmpv1/2 options */
83 /* snmpv3 security options */
86 size_t auth_protocol_len;
87 char *auth_passphrase;
89 size_t priv_protocol_len;
90 char *priv_passphrase;
95 c_complain_t complaint;
97 data_definition_t **data_list;
100 typedef struct host_definition_s host_definition_t;
102 /* These two types are used to cache values in `csnmp_read_table' to handle
104 struct csnmp_list_instances_s
107 char instance[DATA_MAX_NAME_LEN];
108 struct csnmp_list_instances_s *next;
110 typedef struct csnmp_list_instances_s csnmp_list_instances_t;
112 struct csnmp_table_values_s
116 struct csnmp_table_values_s *next;
118 typedef struct csnmp_table_values_s csnmp_table_values_t;
123 static data_definition_t *data_head = NULL;
128 static int csnmp_read_host (user_data_t *ud);
133 static void csnmp_oid_init (oid_t *dst, oid const *src, size_t n)
135 assert (n <= STATIC_ARRAY_SIZE (dst->oid));
136 memcpy (dst->oid, src, sizeof (*src) * n);
140 static int csnmp_oid_compare (oid_t const *left, oid_t const *right)
142 return (snmp_oid_compare (left->oid, left->oid_len,
143 right->oid, right->oid_len));
146 static int csnmp_oid_suffix (oid_t *dst, oid_t const *src,
149 /* Make sure "src" is in "root"s subtree. */
150 if (src->oid_len <= root->oid_len)
152 if (snmp_oid_ncompare (root->oid, root->oid_len,
153 src->oid, src->oid_len,
154 /* n = */ root->oid_len) != 0)
157 memset (dst, 0, sizeof (*dst));
158 dst->oid_len = src->oid_len - root->oid_len;
159 memcpy (dst->oid, &src->oid[root->oid_len],
160 dst->oid_len * sizeof (dst->oid[0]));
164 static int csnmp_oid_to_string (char *buffer, size_t buffer_size,
167 char oid_str[MAX_OID_LEN][16];
168 char *oid_str_ptr[MAX_OID_LEN];
171 for (i = 0; i < o->oid_len; i++)
173 ssnprintf (oid_str[i], sizeof (oid_str[i]), "%lu", (unsigned long) o->oid[i]);
174 oid_str_ptr[i] = oid_str[i];
177 return (strjoin (buffer, buffer_size,
178 oid_str_ptr, o->oid_len, /* separator = */ "."));
181 static void csnmp_host_close_session (host_definition_t *host) /* {{{ */
183 if (host->sess_handle == NULL)
186 snmp_sess_close (host->sess_handle);
187 host->sess_handle = NULL;
188 } /* }}} void csnmp_host_close_session */
190 static void csnmp_host_definition_destroy (void *arg) /* {{{ */
192 host_definition_t *hd;
199 if (hd->name != NULL)
201 DEBUG ("snmp plugin: Destroying host definition for host `%s'.",
205 csnmp_host_close_session (hd);
209 sfree (hd->community);
210 sfree (hd->username);
211 sfree (hd->auth_passphrase);
212 sfree (hd->priv_passphrase);
214 sfree (hd->data_list);
217 } /* }}} void csnmp_host_definition_destroy */
219 /* Many functions to handle the configuration. {{{ */
220 /* First there are many functions which do configuration stuff. It's a big
221 * bloated and messy, I'm afraid. */
224 * Callgraph for the config stuff:
226 * +-> call_snmp_init_once
227 * +-> csnmp_config_add_data
228 * ! +-> csnmp_config_add_data_instance
229 * ! +-> csnmp_config_add_data_instance_prefix
230 * ! +-> csnmp_config_add_data_values
231 * +-> csnmp_config_add_host
232 * +-> csnmp_config_add_host_version
233 * +-> csnmp_config_add_host_collect
234 * +-> csnmp_config_add_host_auth_protocol
235 * +-> csnmp_config_add_host_priv_protocol
236 * +-> csnmp_config_add_host_security_level
238 static void call_snmp_init_once (void)
240 static int have_init = 0;
243 init_snmp (PACKAGE_NAME);
245 } /* void call_snmp_init_once */
247 static int csnmp_config_add_data_instance (data_definition_t *dd, oconfig_item_t *ci)
249 char buffer[DATA_MAX_NAME_LEN];
252 status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
258 /* Instance is an OID */
259 dd->instance.oid.oid_len = MAX_OID_LEN;
261 if (!read_objid (buffer,
262 dd->instance.oid.oid, &dd->instance.oid.oid_len))
264 ERROR ("snmp plugin: read_objid (%s) failed.", buffer);
270 /* Instance is a simple string */
271 sstrncpy (dd->instance.string, buffer,
272 sizeof (dd->instance.string));
276 } /* int csnmp_config_add_data_instance */
278 static int csnmp_config_add_data_instance_prefix (data_definition_t *dd,
285 WARNING ("snmp plugin: data %s: InstancePrefix is ignored when `Table' "
286 "is set to `false'.", dd->name);
290 status = cf_util_get_string(ci, &dd->instance_prefix);
292 } /* int csnmp_config_add_data_instance_prefix */
294 static int csnmp_config_add_data_values (data_definition_t *dd, oconfig_item_t *ci)
298 if (ci->values_num < 1)
300 WARNING ("snmp plugin: `Values' needs at least one argument.");
304 for (i = 0; i < ci->values_num; i++)
305 if (ci->values[i].type != OCONFIG_TYPE_STRING)
307 WARNING ("snmp plugin: `Values' needs only string argument.");
313 dd->values = (oid_t *) malloc (sizeof (oid_t) * ci->values_num);
314 if (dd->values == NULL)
316 dd->values_len = (size_t) ci->values_num;
318 for (i = 0; i < ci->values_num; i++)
320 dd->values[i].oid_len = MAX_OID_LEN;
322 if (NULL == snmp_parse_oid (ci->values[i].value.string,
323 dd->values[i].oid, &dd->values[i].oid_len))
325 ERROR ("snmp plugin: snmp_parse_oid (%s) failed.",
326 ci->values[i].value.string);
335 } /* int csnmp_config_add_data_instance */
337 static int csnmp_config_add_data_blacklist(data_definition_t *dd, oconfig_item_t *ci)
341 if (ci->values_num < 1)
344 for (i = 0; i < ci->values_num; i++)
346 if (ci->values[i].type != OCONFIG_TYPE_STRING)
348 WARNING ("snmp plugin: `Ignore' needs only string argument.");
356 for (i = 0; i < ci->values_num; ++i)
358 if (strarray_add(&(dd->ignores), &(dd->ignores_len), ci->values[i].value.string) != 0)
360 ERROR("snmp plugin: Can't allocate memory");
361 strarray_free(dd->ignores, dd->ignores_len);
366 } /* int csnmp_config_add_data_blacklist */
368 static int csnmp_config_add_data_blacklist_match_inverted(data_definition_t *dd, oconfig_item_t *ci)
370 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
372 WARNING ("snmp plugin: `InvertMatch' needs exactly one boolean argument.");
376 dd->invert_match = ci->values[0].value.boolean ? 1 : 0;
379 } /* int csnmp_config_add_data_blacklist_match_inverted */
381 static int csnmp_config_add_data (oconfig_item_t *ci)
383 data_definition_t *dd;
387 dd = (data_definition_t *) malloc (sizeof (data_definition_t));
390 memset (dd, '\0', sizeof (data_definition_t));
392 status = cf_util_get_string(ci, &dd->name);
402 for (i = 0; i < ci->children_num; i++)
404 oconfig_item_t *option = ci->children + i;
406 if (strcasecmp ("Type", option->key) == 0)
407 status = cf_util_get_string(option, &dd->type);
408 else if (strcasecmp ("Table", option->key) == 0)
409 status = cf_util_get_boolean(option, &dd->is_table);
410 else if (strcasecmp ("Instance", option->key) == 0)
411 status = csnmp_config_add_data_instance (dd, option);
412 else if (strcasecmp ("InstancePrefix", option->key) == 0)
413 status = csnmp_config_add_data_instance_prefix (dd, option);
414 else if (strcasecmp ("Values", option->key) == 0)
415 status = csnmp_config_add_data_values (dd, option);
416 else if (strcasecmp ("Shift", option->key) == 0)
417 status = cf_util_get_double(option, &dd->shift);
418 else if (strcasecmp ("Scale", option->key) == 0)
419 status = cf_util_get_double(option, &dd->scale);
420 else if (strcasecmp ("Ignore", option->key) == 0)
421 status = csnmp_config_add_data_blacklist(dd, option);
422 else if (strcasecmp ("InvertMatch", option->key) == 0)
423 status = csnmp_config_add_data_blacklist_match_inverted(dd, option);
426 WARNING ("snmp plugin: Option `%s' not allowed here.", option->key);
432 } /* for (ci->children) */
436 if (dd->type == NULL)
438 WARNING ("snmp plugin: `Type' not given for data `%s'", dd->name);
442 if (dd->values == NULL)
444 WARNING ("snmp plugin: No `Value' given for data `%s'", dd->name);
450 } /* while (status == 0) */
455 sfree (dd->instance_prefix);
462 DEBUG ("snmp plugin: dd = { name = %s, type = %s, is_table = %s, values_len = %zu }",
463 dd->name, dd->type, (dd->is_table != 0) ? "true" : "false", dd->values_len);
465 if (data_head == NULL)
469 data_definition_t *last;
471 while (last->next != NULL)
477 } /* int csnmp_config_add_data */
479 static int csnmp_config_add_host_version (host_definition_t *hd, oconfig_item_t *ci)
483 if ((ci->values_num != 1)
484 || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
486 WARNING ("snmp plugin: The `Version' config option needs exactly one number argument.");
490 version = (int) ci->values[0].value.number;
491 if ((version < 1) || (version > 3))
493 WARNING ("snmp plugin: `Version' must either be `1', `2', or `3'.");
497 hd->version = version;
500 } /* int csnmp_config_add_host_address */
502 static int csnmp_config_add_host_collect (host_definition_t *host,
505 data_definition_t *data;
506 data_definition_t **data_list;
510 if (ci->values_num < 1)
512 WARNING ("snmp plugin: `Collect' needs at least one argument.");
516 for (i = 0; i < ci->values_num; i++)
517 if (ci->values[i].type != OCONFIG_TYPE_STRING)
519 WARNING ("snmp plugin: All arguments to `Collect' must be strings.");
523 data_list_len = host->data_list_len + ci->values_num;
524 data_list = (data_definition_t **) realloc (host->data_list,
525 sizeof (data_definition_t *) * data_list_len);
526 if (data_list == NULL)
528 host->data_list = data_list;
530 for (i = 0; i < ci->values_num; i++)
532 for (data = data_head; data != NULL; data = data->next)
533 if (strcasecmp (ci->values[i].value.string, data->name) == 0)
538 WARNING ("snmp plugin: No such data configured: `%s'",
539 ci->values[i].value.string);
543 DEBUG ("snmp plugin: Collect: host = %s, data[%i] = %s;",
544 host->name, host->data_list_len, data->name);
546 host->data_list[host->data_list_len] = data;
547 host->data_list_len++;
548 } /* for (values_num) */
551 } /* int csnmp_config_add_host_collect */
553 static int csnmp_config_add_host_auth_protocol (host_definition_t *hd, oconfig_item_t *ci)
558 status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
562 if (strcasecmp("MD5", buffer) == 0) {
563 hd->auth_protocol = usmHMACMD5AuthProtocol;
564 hd->auth_protocol_len = sizeof(usmHMACMD5AuthProtocol)/sizeof(oid);
566 else if (strcasecmp("SHA", buffer) == 0) {
567 hd->auth_protocol = usmHMACSHA1AuthProtocol;
568 hd->auth_protocol_len = sizeof(usmHMACSHA1AuthProtocol)/sizeof(oid);
572 WARNING ("snmp plugin: The `AuthProtocol' config option must be `MD5' or `SHA'.");
576 DEBUG ("snmp plugin: host = %s; host->auth_protocol = %s;",
577 hd->name, hd->auth_protocol == usmHMACMD5AuthProtocol ? "MD5" : "SHA");
580 } /* int csnmp_config_add_host_auth_protocol */
582 static int csnmp_config_add_host_priv_protocol (host_definition_t *hd, oconfig_item_t *ci)
587 status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
591 if (strcasecmp("AES", buffer) == 0)
593 hd->priv_protocol = usmAESPrivProtocol;
594 hd->priv_protocol_len = sizeof(usmAESPrivProtocol)/sizeof(oid);
596 else if (strcasecmp("DES", buffer) == 0) {
597 hd->priv_protocol = usmDESPrivProtocol;
598 hd->priv_protocol_len = sizeof(usmDESPrivProtocol)/sizeof(oid);
602 WARNING ("snmp plugin: The `PrivProtocol' config option must be `AES' or `DES'.");
606 DEBUG ("snmp plugin: host = %s; host->priv_protocol = %s;",
607 hd->name, hd->priv_protocol == usmAESPrivProtocol ? "AES" : "DES");
610 } /* int csnmp_config_add_host_priv_protocol */
612 static int csnmp_config_add_host_security_level (host_definition_t *hd, oconfig_item_t *ci)
617 status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
621 if (strcasecmp("noAuthNoPriv", buffer) == 0)
622 hd->security_level = SNMP_SEC_LEVEL_NOAUTH;
623 else if (strcasecmp("authNoPriv", buffer) == 0)
624 hd->security_level = SNMP_SEC_LEVEL_AUTHNOPRIV;
625 else if (strcasecmp("authPriv", buffer) == 0)
626 hd->security_level = SNMP_SEC_LEVEL_AUTHPRIV;
629 WARNING ("snmp plugin: The `SecurityLevel' config option must be `noAuthNoPriv', `authNoPriv', or `authPriv'.");
633 DEBUG ("snmp plugin: host = %s; host->security_level = %d;",
634 hd->name, hd->security_level);
637 } /* int csnmp_config_add_host_security_level */
639 static int csnmp_config_add_host (oconfig_item_t *ci)
641 host_definition_t *hd;
645 /* Registration stuff. */
646 char cb_name[DATA_MAX_NAME_LEN];
649 hd = (host_definition_t *) malloc (sizeof (host_definition_t));
652 memset (hd, '\0', sizeof (host_definition_t));
654 C_COMPLAIN_INIT (&hd->complaint);
656 status = cf_util_get_string(ci, &hd->name);
660 hd->sess_handle = NULL;
663 for (i = 0; i < ci->children_num; i++)
665 oconfig_item_t *option = ci->children + i;
668 if (strcasecmp ("Address", option->key) == 0)
669 status = cf_util_get_string(option, &hd->address);
670 else if (strcasecmp ("Community", option->key) == 0)
671 status = cf_util_get_string(option, &hd->community);
672 else if (strcasecmp ("Version", option->key) == 0)
673 status = csnmp_config_add_host_version (hd, option);
674 else if (strcasecmp ("Collect", option->key) == 0)
675 csnmp_config_add_host_collect (hd, option);
676 else if (strcasecmp ("Interval", option->key) == 0)
677 cf_util_get_cdtime (option, &hd->interval);
678 else if (strcasecmp ("Username", option->key) == 0)
679 status = cf_util_get_string(option, &hd->username);
680 else if (strcasecmp ("AuthProtocol", option->key) == 0)
681 status = csnmp_config_add_host_auth_protocol (hd, option);
682 else if (strcasecmp ("PrivacyProtocol", option->key) == 0)
683 status = csnmp_config_add_host_priv_protocol (hd, option);
684 else if (strcasecmp ("AuthPassphrase", option->key) == 0)
685 status = cf_util_get_string(option, &hd->auth_passphrase);
686 else if (strcasecmp ("PrivacyPassphrase", option->key) == 0)
687 status = cf_util_get_string(option, &hd->priv_passphrase);
688 else if (strcasecmp ("SecurityLevel", option->key) == 0)
689 status = csnmp_config_add_host_security_level (hd, option);
690 else if (strcasecmp ("Context", option->key) == 0)
691 status = cf_util_get_string(option, &hd->context);
694 WARNING ("snmp plugin: csnmp_config_add_host: Option `%s' not allowed here.", option->key);
700 } /* for (ci->children) */
704 if (hd->address == NULL)
706 WARNING ("snmp plugin: `Address' not given for host `%s'", hd->name);
710 if (hd->community == NULL && hd->version < 3)
712 WARNING ("snmp plugin: `Community' not given for host `%s'", hd->name);
716 if (hd->version == 3)
718 if (hd->username == NULL)
720 WARNING ("snmp plugin: `Username' not given for host `%s'", hd->name);
724 if (hd->security_level == 0)
726 WARNING ("snmp plugin: `SecurityLevel' not given for host `%s'", hd->name);
730 if (hd->security_level == SNMP_SEC_LEVEL_AUTHNOPRIV || hd->security_level == SNMP_SEC_LEVEL_AUTHPRIV)
732 if (hd->auth_protocol == NULL)
734 WARNING ("snmp plugin: `AuthProtocol' not given for host `%s'", hd->name);
738 if (hd->auth_passphrase == NULL)
740 WARNING ("snmp plugin: `AuthPassphrase' not given for host `%s'", hd->name);
745 if (hd->security_level == SNMP_SEC_LEVEL_AUTHPRIV)
747 if (hd->priv_protocol == NULL)
749 WARNING ("snmp plugin: `PrivacyProtocol' not given for host `%s'", hd->name);
753 if (hd->priv_passphrase == NULL)
755 WARNING ("snmp plugin: `PrivacyPassphrase' not given for host `%s'", hd->name);
763 } /* while (status == 0) */
767 csnmp_host_definition_destroy (hd);
771 DEBUG ("snmp plugin: hd = { name = %s, address = %s, community = %s, version = %i }",
772 hd->name, hd->address, hd->community, hd->version);
774 ssnprintf (cb_name, sizeof (cb_name), "snmp-%s", hd->name);
776 memset (&cb_data, 0, sizeof (cb_data));
778 cb_data.free_func = csnmp_host_definition_destroy;
780 status = plugin_register_complex_read (/* group = */ NULL, cb_name,
781 csnmp_read_host, hd->interval, /* user_data = */ &cb_data);
784 ERROR ("snmp plugin: Registering complex read function failed.");
785 csnmp_host_definition_destroy (hd);
790 } /* int csnmp_config_add_host */
792 static int csnmp_config (oconfig_item_t *ci)
796 call_snmp_init_once ();
798 for (i = 0; i < ci->children_num; i++)
800 oconfig_item_t *child = ci->children + i;
801 if (strcasecmp ("Data", child->key) == 0)
802 csnmp_config_add_data (child);
803 else if (strcasecmp ("Host", child->key) == 0)
804 csnmp_config_add_host (child);
807 WARNING ("snmp plugin: Ignoring unknown config option `%s'.", child->key);
809 } /* for (ci->children) */
812 } /* int csnmp_config */
814 /* }}} End of the config stuff. Now the interesting part begins */
816 static void csnmp_host_open_session (host_definition_t *host)
818 struct snmp_session sess;
821 if (host->sess_handle != NULL)
822 csnmp_host_close_session (host);
824 snmp_sess_init (&sess);
825 sess.peername = host->address;
826 switch (host->version)
829 sess.version = SNMP_VERSION_1;
832 sess.version = SNMP_VERSION_3;
835 sess.version = SNMP_VERSION_2c;
839 if (host->version == 3)
841 sess.securityName = host->username;
842 sess.securityNameLen = strlen (host->username);
843 sess.securityLevel = host->security_level;
845 if (sess.securityLevel == SNMP_SEC_LEVEL_AUTHNOPRIV || sess.securityLevel == SNMP_SEC_LEVEL_AUTHPRIV)
847 sess.securityAuthProto = host->auth_protocol;
848 sess.securityAuthProtoLen = host->auth_protocol_len;
849 sess.securityAuthKeyLen = USM_AUTH_KU_LEN;
850 error = generate_Ku (sess.securityAuthProto,
851 sess.securityAuthProtoLen,
852 (u_char *) host->auth_passphrase,
853 strlen(host->auth_passphrase),
854 sess.securityAuthKey,
855 &sess.securityAuthKeyLen);
856 if (error != SNMPERR_SUCCESS) {
857 ERROR ("snmp plugin: host %s: Error generating Ku from auth_passphrase. (Error %d)", host->name, error);
861 if (sess.securityLevel == SNMP_SEC_LEVEL_AUTHPRIV)
863 sess.securityPrivProto = host->priv_protocol;
864 sess.securityPrivProtoLen = host->priv_protocol_len;
865 sess.securityPrivKeyLen = USM_PRIV_KU_LEN;
866 error = generate_Ku (sess.securityAuthProto,
867 sess.securityAuthProtoLen,
868 (u_char *) host->priv_passphrase,
869 strlen(host->priv_passphrase),
870 sess.securityPrivKey,
871 &sess.securityPrivKeyLen);
872 if (error != SNMPERR_SUCCESS) {
873 ERROR ("snmp plugin: host %s: Error generating Ku from priv_passphrase. (Error %d)", host->name, error);
877 if (host->context != NULL)
879 sess.contextName = host->context;
880 sess.contextNameLen = strlen (host->context);
883 else /* SNMPv1/2 "authenticates" with community string */
885 sess.community = (u_char *) host->community;
886 sess.community_len = strlen (host->community);
889 /* snmp_sess_open will copy the `struct snmp_session *'. */
890 host->sess_handle = snmp_sess_open (&sess);
892 if (host->sess_handle == NULL)
896 snmp_error (&sess, NULL, NULL, &errstr);
898 ERROR ("snmp plugin: host %s: snmp_sess_open failed: %s",
899 host->name, (errstr == NULL) ? "Unknown problem" : errstr);
902 } /* void csnmp_host_open_session */
904 /* TODO: Check if negative values wrap around. Problem: negative temperatures. */
905 static value_t csnmp_value_list_to_value (struct variable_list *vl, int type,
906 double scale, double shift,
907 const char *host_name, const char *data_name)
910 uint64_t tmp_unsigned = 0;
911 int64_t tmp_signed = 0;
913 /* Set to true when the original SNMP type appears to have been signed. */
914 _Bool prefer_signed = 0;
916 if ((vl->type == ASN_INTEGER)
917 || (vl->type == ASN_UINTEGER)
918 || (vl->type == ASN_COUNTER)
920 || (vl->type == ASN_TIMETICKS)
922 || (vl->type == ASN_GAUGE))
924 tmp_unsigned = (uint32_t) *vl->val.integer;
925 tmp_signed = (int32_t) *vl->val.integer;
927 if (vl->type == ASN_INTEGER)
930 DEBUG ("snmp plugin: Parsed int32 value is %"PRIu64".", tmp_unsigned);
932 else if (vl->type == ASN_COUNTER64)
934 tmp_unsigned = (uint32_t) vl->val.counter64->high;
935 tmp_unsigned = tmp_unsigned << 32;
936 tmp_unsigned += (uint32_t) vl->val.counter64->low;
937 tmp_signed = (int64_t) tmp_unsigned;
938 DEBUG ("snmp plugin: Parsed int64 value is %"PRIu64".", tmp_unsigned);
940 else if (vl->type == ASN_OCTET_STR)
942 /* We'll handle this later.. */
946 char oid_buffer[1024];
948 memset (oid_buffer, 0, sizeof (oid_buffer));
949 snprint_objid (oid_buffer, sizeof (oid_buffer) - 1,
950 vl->name, vl->name_length);
953 if (vl->type == ASN_NULL)
954 INFO ("snmp plugin: OID \"%s\" is undefined (type ASN_NULL)",
958 WARNING ("snmp plugin: I don't know the ASN type #%i "
959 "(OID: \"%s\", data block \"%s\", host block \"%s\")",
960 (int) vl->type, oid_buffer,
961 (data_name != NULL) ? data_name : "UNKNOWN",
962 (host_name != NULL) ? host_name : "UNKNOWN");
967 if (vl->type == ASN_OCTET_STR)
971 if (vl->val.string != NULL)
974 size_t string_length;
976 string_length = sizeof (string) - 1;
977 if (vl->val_len < string_length)
978 string_length = vl->val_len;
980 /* The strings we get from the Net-SNMP library may not be null
981 * terminated. That is why we're using `memcpy' here and not `strcpy'.
982 * `string_length' is set to `vl->val_len' which holds the length of the
984 memcpy (string, vl->val.string, string_length);
985 string[string_length] = 0;
987 status = parse_value (string, &ret, type);
990 ERROR ("snmp plugin: host %s: csnmp_value_list_to_value: Parsing string as %s failed: %s",
991 (host_name != NULL) ? host_name : "UNKNOWN",
992 DS_TYPE_TO_STRING (type), string);
1000 case DS_TYPE_COUNTER:
1001 case DS_TYPE_DERIVE:
1002 case DS_TYPE_ABSOLUTE:
1003 memset (&ret, 0, sizeof (ret));
1011 ERROR ("snmp plugin: csnmp_value_list_to_value: Unknown "
1012 "data source type: %i.", type);
1016 } /* if (vl->type == ASN_OCTET_STR) */
1017 else if (type == DS_TYPE_COUNTER)
1019 ret.counter = tmp_unsigned;
1021 else if (type == DS_TYPE_GAUGE)
1025 else if (prefer_signed)
1026 ret.gauge = (scale * tmp_signed) + shift;
1028 ret.gauge = (scale * tmp_unsigned) + shift;
1030 else if (type == DS_TYPE_DERIVE)
1033 ret.derive = (derive_t) tmp_signed;
1035 ret.derive = (derive_t) tmp_unsigned;
1037 else if (type == DS_TYPE_ABSOLUTE)
1039 ret.absolute = (absolute_t) tmp_unsigned;
1043 ERROR ("snmp plugin: csnmp_value_list_to_value: Unknown data source "
1049 } /* value_t csnmp_value_list_to_value */
1051 /* csnmp_strvbcopy_hexstring converts the bit string contained in "vb" to a hex
1052 * representation and writes it to dst. Returns zero on success and ENOMEM if
1053 * dst is not large enough to hold the string. dst is guaranteed to be
1054 * nul-terminated. */
1055 static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
1056 const struct variable_list *vb, size_t dst_size)
1065 buffer_free = dst_size;
1067 for (i = 0; i < vb->val_len; i++)
1071 status = snprintf (buffer_ptr, buffer_free,
1072 (i == 0) ? "%02x" : ":%02x", (unsigned int) vb->val.bitstring[i]);
1073 assert (status >= 0);
1075 if (((size_t) status) >= buffer_free) /* truncated */
1077 dst[dst_size - 1] = 0;
1080 else /* if (status < buffer_free) */
1082 buffer_ptr += (size_t) status;
1083 buffer_free -= (size_t) status;
1088 } /* }}} int csnmp_strvbcopy_hexstring */
1090 /* csnmp_strvbcopy copies the octet string or bit string contained in vb to
1091 * dst. If non-printable characters are detected, it will switch to a hex
1092 * representation of the string. Returns zero on success, EINVAL if vb does not
1093 * contain a string and ENOMEM if dst is not large enough to contain the
1095 static int csnmp_strvbcopy (char *dst, /* {{{ */
1096 const struct variable_list *vb, size_t dst_size)
1102 if (vb->type == ASN_OCTET_STR)
1103 src = (char *) vb->val.string;
1104 else if (vb->type == ASN_BIT_STR)
1105 src = (char *) vb->val.bitstring;
1112 num_chars = dst_size - 1;
1113 if (num_chars > vb->val_len)
1114 num_chars = vb->val_len;
1116 for (i = 0; i < num_chars; i++)
1118 /* Check for control characters. */
1119 if ((unsigned char)src[i] < 32)
1120 return (csnmp_strvbcopy_hexstring (dst, vb, dst_size));
1124 dst[dst_size - 1] = 0;
1126 if (dst_size <= vb->val_len)
1130 } /* }}} int csnmp_strvbcopy */
1132 static int csnmp_instance_list_add (csnmp_list_instances_t **head,
1133 csnmp_list_instances_t **tail,
1134 const struct snmp_pdu *res,
1135 const host_definition_t *hd, const data_definition_t *dd)
1137 csnmp_list_instances_t *il;
1138 struct variable_list *vb;
1142 uint32_t is_matched;
1144 /* Set vb on the last variable */
1145 for (vb = res->variables;
1146 (vb != NULL) && (vb->next_variable != NULL);
1147 vb = vb->next_variable)
1152 csnmp_oid_init (&vb_name, vb->name, vb->name_length);
1154 il = malloc (sizeof (*il));
1157 ERROR ("snmp plugin: malloc failed.");
1160 memset (il, 0, sizeof (*il));
1163 status = csnmp_oid_suffix (&il->suffix, &vb_name, &dd->instance.oid);
1170 /* Get instance name */
1171 if ((vb->type == ASN_OCTET_STR) || (vb->type == ASN_BIT_STR))
1175 csnmp_strvbcopy (il->instance, vb, sizeof (il->instance));
1177 for (i = 0; i < dd->ignores_len; i++)
1179 status = fnmatch(dd->ignores[i], il->instance, 0);
1182 if (dd->invert_match == 0)
1194 if (dd->invert_match != 0 && is_matched == 0)
1199 for (ptr = il->instance; *ptr != '\0'; ptr++)
1201 if ((*ptr > 0) && (*ptr < 32))
1203 else if (*ptr == '/')
1206 DEBUG ("snmp plugin: il->instance = `%s';", il->instance);
1210 value_t val = csnmp_value_list_to_value (vb, DS_TYPE_COUNTER,
1211 /* scale = */ 1.0, /* shift = */ 0.0, hd->name, dd->name);
1212 ssnprintf (il->instance, sizeof (il->instance),
1213 "%llu", val.counter);
1216 /* TODO: Debugging output */
1225 } /* int csnmp_instance_list_add */
1227 static int csnmp_dispatch_table (host_definition_t *host, data_definition_t *data,
1228 csnmp_list_instances_t *instance_list,
1229 csnmp_table_values_t **value_table)
1231 const data_set_t *ds;
1232 value_list_t vl = VALUE_LIST_INIT;
1234 csnmp_list_instances_t *instance_list_ptr;
1235 csnmp_table_values_t **value_table_ptr;
1239 oid_t current_suffix;
1241 ds = plugin_get_ds (data->type);
1244 ERROR ("snmp plugin: DataSet `%s' not defined.", data->type);
1247 assert (ds->ds_num == data->values_len);
1248 assert (data->values_len > 0);
1250 instance_list_ptr = instance_list;
1252 value_table_ptr = calloc (data->values_len, sizeof (*value_table_ptr));
1253 if (value_table_ptr == NULL)
1255 for (i = 0; i < data->values_len; i++)
1256 value_table_ptr[i] = value_table[i];
1258 vl.values_len = data->values_len;
1259 vl.values = malloc (sizeof (*vl.values) * vl.values_len);
1260 if (vl.values == NULL)
1262 ERROR ("snmp plugin: malloc failed.");
1263 sfree (value_table_ptr);
1267 sstrncpy (vl.host, host->name, sizeof (vl.host));
1268 sstrncpy (vl.plugin, "snmp", sizeof (vl.plugin));
1270 vl.interval = host->interval;
1273 memset (¤t_suffix, 0, sizeof (current_suffix));
1276 _Bool suffix_skipped = 0;
1278 /* Determine next suffix to handle. */
1279 if (instance_list != NULL)
1281 if (instance_list_ptr == NULL)
1287 memcpy (¤t_suffix, &instance_list_ptr->suffix, sizeof (current_suffix));
1289 else /* no instance configured */
1291 csnmp_table_values_t *ptr = value_table_ptr[0];
1298 memcpy (¤t_suffix, &ptr->suffix, sizeof (current_suffix));
1301 /* Update all the value_table_ptr to point at the entry with the same
1302 * trailing partial OID */
1303 for (i = 0; i < data->values_len; i++)
1305 while ((value_table_ptr[i] != NULL)
1306 && (csnmp_oid_compare (&value_table_ptr[i]->suffix, ¤t_suffix) < 0))
1307 value_table_ptr[i] = value_table_ptr[i]->next;
1309 if (value_table_ptr[i] == NULL)
1314 else if (csnmp_oid_compare (&value_table_ptr[i]->suffix, ¤t_suffix) > 0)
1316 /* This suffix is missing in the subtree. Indicate this with the
1317 * "suffix_skipped" flag and try the next instance / suffix. */
1321 } /* for (i = 0; i < columns; i++) */
1326 /* Matching the values failed. Start from the beginning again. */
1329 if (instance_list != NULL)
1330 instance_list_ptr = instance_list_ptr->next;
1332 value_table_ptr[0] = value_table_ptr[0]->next;
1337 /* if we reach this line, all value_table_ptr[i] are non-NULL and are set
1338 * to the same subid. instance_list_ptr is either NULL or points to the
1339 * same subid, too. */
1341 for (i = 1; i < data->values_len; i++)
1343 assert (value_table_ptr[i] != NULL);
1344 assert (csnmp_oid_compare (&value_table_ptr[i-1]->suffix,
1345 &value_table_ptr[i]->suffix) == 0);
1347 assert ((instance_list_ptr == NULL)
1348 || (csnmp_oid_compare (&instance_list_ptr->suffix,
1349 &value_table_ptr[0]->suffix) == 0));
1352 sstrncpy (vl.type, data->type, sizeof (vl.type));
1355 char temp[DATA_MAX_NAME_LEN];
1357 if (instance_list_ptr == NULL)
1358 csnmp_oid_to_string (temp, sizeof (temp), ¤t_suffix);
1360 sstrncpy (temp, instance_list_ptr->instance, sizeof (temp));
1362 if (data->instance_prefix == NULL)
1363 sstrncpy (vl.type_instance, temp, sizeof (vl.type_instance));
1365 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s%s",
1366 data->instance_prefix, temp);
1369 for (i = 0; i < data->values_len; i++)
1370 vl.values[i] = value_table_ptr[i]->value;
1372 /* If we get here `vl.type_instance' and all `vl.values' have been set */
1373 plugin_dispatch_values (&vl);
1375 if (instance_list != NULL)
1376 instance_list_ptr = instance_list_ptr->next;
1378 value_table_ptr[0] = value_table_ptr[0]->next;
1379 } /* while (have_more) */
1382 sfree (value_table_ptr);
1385 } /* int csnmp_dispatch_table */
1387 static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
1389 struct snmp_pdu *req;
1390 struct snmp_pdu *res;
1391 struct variable_list *vb;
1393 const data_set_t *ds;
1395 size_t oid_list_len = data->values_len + 1;
1396 /* Holds the last OID returned by the device. We use this in the GETNEXT
1397 * request to proceed. */
1398 oid_t oid_list[oid_list_len];
1399 /* Set to false when an OID has left its subtree so we don't re-request it
1401 _Bool oid_list_todo[oid_list_len];
1406 /* `value_list_head' and `value_list_tail' implement a linked list for each
1407 * value. `instance_list_head' and `instance_list_tail' implement a linked list of
1408 * instance names. This is used to jump gaps in the table. */
1409 csnmp_list_instances_t *instance_list_head;
1410 csnmp_list_instances_t *instance_list_tail;
1411 csnmp_table_values_t **value_list_head;
1412 csnmp_table_values_t **value_list_tail;
1414 DEBUG ("snmp plugin: csnmp_read_table (host = %s, data = %s)",
1415 host->name, data->name);
1417 if (host->sess_handle == NULL)
1419 DEBUG ("snmp plugin: csnmp_read_table: host->sess_handle == NULL");
1423 ds = plugin_get_ds (data->type);
1426 ERROR ("snmp plugin: DataSet `%s' not defined.", data->type);
1430 if (ds->ds_num != data->values_len)
1432 ERROR ("snmp plugin: DataSet `%s' requires %zu values, but config talks about %zu",
1433 data->type, ds->ds_num, data->values_len);
1436 assert (data->values_len > 0);
1438 /* We need a copy of all the OIDs, because GETNEXT will destroy them. */
1439 memcpy (oid_list, data->values, data->values_len * sizeof (oid_t));
1440 if (data->instance.oid.oid_len > 0)
1441 memcpy (oid_list + data->values_len, &data->instance.oid, sizeof (oid_t));
1442 else /* no InstanceFrom option specified. */
1445 for (i = 0; i < oid_list_len; i++)
1446 oid_list_todo[i] = 1;
1448 /* We're going to construct n linked lists, one for each "value".
1449 * value_list_head will contain pointers to the heads of these linked lists,
1450 * value_list_tail will contain pointers to the tail of the lists. */
1451 value_list_head = calloc (data->values_len, sizeof (*value_list_head));
1452 value_list_tail = calloc (data->values_len, sizeof (*value_list_tail));
1453 if ((value_list_head == NULL) || (value_list_tail == NULL))
1455 ERROR ("snmp plugin: csnmp_read_table: calloc failed.");
1456 sfree (value_list_head);
1457 sfree (value_list_tail);
1461 instance_list_head = NULL;
1462 instance_list_tail = NULL;
1467 int oid_list_todo_num;
1469 req = snmp_pdu_create (SNMP_MSG_GETNEXT);
1472 ERROR ("snmp plugin: snmp_pdu_create failed.");
1477 oid_list_todo_num = 0;
1478 for (i = 0; i < oid_list_len; i++)
1480 /* Do not rerequest already finished OIDs */
1481 if (!oid_list_todo[i])
1483 oid_list_todo_num++;
1484 snmp_add_null_var (req, oid_list[i].oid, oid_list[i].oid_len);
1487 if (oid_list_todo_num == 0)
1489 /* The request is still empty - so we are finished */
1490 DEBUG ("snmp plugin: all variables have left their subtree");
1496 status = snmp_sess_synch_response (host->sess_handle, req, &res);
1497 if ((status != STAT_SUCCESS) || (res == NULL))
1499 char *errstr = NULL;
1501 snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
1503 c_complain (LOG_ERR, &host->complaint,
1504 "snmp plugin: host %s: snmp_sess_synch_response failed: %s",
1505 host->name, (errstr == NULL) ? "Unknown problem" : errstr);
1508 snmp_free_pdu (res);
1511 /* snmp_synch_response already freed our PDU */
1514 csnmp_host_close_session (host);
1521 assert (res != NULL);
1522 c_release (LOG_INFO, &host->complaint,
1523 "snmp plugin: host %s: snmp_sess_synch_response successful.",
1526 vb = res->variables;
1533 for (vb = res->variables, i = 0; (vb != NULL); vb = vb->next_variable, i++)
1535 /* Calculate value index from todo list */
1536 while ((i < oid_list_len) && !oid_list_todo[i])
1539 /* An instance is configured and the res variable we process is the
1540 * instance value (last index) */
1541 if ((data->instance.oid.oid_len > 0) && (i == data->values_len))
1543 if ((vb->type == SNMP_ENDOFMIBVIEW)
1544 || (snmp_oid_ncompare (data->instance.oid.oid,
1545 data->instance.oid.oid_len,
1546 vb->name, vb->name_length,
1547 data->instance.oid.oid_len) != 0))
1549 DEBUG ("snmp plugin: host = %s; data = %s; Instance left its subtree.",
1550 host->name, data->name);
1551 oid_list_todo[i] = 0;
1555 /* Allocate a new `csnmp_list_instances_t', insert the instance name and
1556 * add it to the list */
1557 if (csnmp_instance_list_add (&instance_list_head, &instance_list_tail,
1558 res, host, data) != 0)
1560 ERROR ("snmp plugin: host %s: csnmp_instance_list_add failed.",
1566 else /* The variable we are processing is a normal value */
1568 csnmp_table_values_t *vt;
1573 csnmp_oid_init (&vb_name, vb->name, vb->name_length);
1575 /* Calculate the current suffix. This is later used to check that the
1576 * suffix is increasing. This also checks if we left the subtree */
1577 ret = csnmp_oid_suffix (&suffix, &vb_name, data->values + i);
1580 DEBUG ("snmp plugin: host = %s; data = %s; i = %zu; "
1581 "Value probably left its subtree.",
1582 host->name, data->name, i);
1583 oid_list_todo[i] = 0;
1587 /* Make sure the OIDs returned by the agent are increasing. Otherwise our
1588 * table matching algorithm will get confused. */
1589 if ((value_list_tail[i] != NULL)
1590 && (csnmp_oid_compare (&suffix, &value_list_tail[i]->suffix) <= 0))
1592 DEBUG ("snmp plugin: host = %s; data = %s; i = %zu; "
1593 "Suffix is not increasing.",
1594 host->name, data->name, i);
1595 oid_list_todo[i] = 0;
1599 vt = malloc (sizeof (*vt));
1602 ERROR ("snmp plugin: malloc failed.");
1606 memset (vt, 0, sizeof (*vt));
1608 vt->value = csnmp_value_list_to_value (vb, ds->ds[i].type,
1609 data->scale, data->shift, host->name, data->name);
1610 memcpy (&vt->suffix, &suffix, sizeof (vt->suffix));
1613 if (value_list_tail[i] == NULL)
1614 value_list_head[i] = vt;
1616 value_list_tail[i]->next = vt;
1617 value_list_tail[i] = vt;
1620 /* Copy OID to oid_list[i] */
1621 memcpy (oid_list[i].oid, vb->name, sizeof (oid) * vb->name_length);
1622 oid_list[i].oid_len = vb->name_length;
1624 } /* for (vb = res->variables ...) */
1627 snmp_free_pdu (res);
1629 } /* while (status == 0) */
1632 snmp_free_pdu (res);
1636 snmp_free_pdu (req);
1640 csnmp_dispatch_table (host, data, instance_list_head, value_list_head);
1642 /* Free all allocated variables here */
1643 while (instance_list_head != NULL)
1645 csnmp_list_instances_t *next = instance_list_head->next;
1646 sfree (instance_list_head);
1647 instance_list_head = next;
1650 for (i = 0; i < data->values_len; i++)
1652 while (value_list_head[i] != NULL)
1654 csnmp_table_values_t *next = value_list_head[i]->next;
1655 sfree (value_list_head[i]);
1656 value_list_head[i] = next;
1660 sfree (value_list_head);
1661 sfree (value_list_tail);
1664 } /* int csnmp_read_table */
1666 static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
1668 struct snmp_pdu *req;
1669 struct snmp_pdu *res;
1670 struct variable_list *vb;
1672 const data_set_t *ds;
1673 value_list_t vl = VALUE_LIST_INIT;
1678 DEBUG ("snmp plugin: csnmp_read_value (host = %s, data = %s)",
1679 host->name, data->name);
1681 if (host->sess_handle == NULL)
1683 DEBUG ("snmp plugin: csnmp_read_value: host->sess_handle == NULL");
1687 ds = plugin_get_ds (data->type);
1690 ERROR ("snmp plugin: DataSet `%s' not defined.", data->type);
1694 if (ds->ds_num != data->values_len)
1696 ERROR ("snmp plugin: DataSet `%s' requires %zu values, but config talks about %zu",
1697 data->type, ds->ds_num, data->values_len);
1701 vl.values_len = ds->ds_num;
1702 vl.values = (value_t *) malloc (sizeof (value_t) * vl.values_len);
1703 if (vl.values == NULL)
1705 for (i = 0; i < vl.values_len; i++)
1707 if (ds->ds[i].type == DS_TYPE_COUNTER)
1708 vl.values[i].counter = 0;
1710 vl.values[i].gauge = NAN;
1713 sstrncpy (vl.host, host->name, sizeof (vl.host));
1714 sstrncpy (vl.plugin, "snmp", sizeof (vl.plugin));
1715 sstrncpy (vl.type, data->type, sizeof (vl.type));
1716 sstrncpy (vl.type_instance, data->instance.string, sizeof (vl.type_instance));
1718 vl.interval = host->interval;
1720 req = snmp_pdu_create (SNMP_MSG_GET);
1723 ERROR ("snmp plugin: snmp_pdu_create failed.");
1728 for (i = 0; i < data->values_len; i++)
1729 snmp_add_null_var (req, data->values[i].oid, data->values[i].oid_len);
1732 status = snmp_sess_synch_response (host->sess_handle, req, &res);
1734 if ((status != STAT_SUCCESS) || (res == NULL))
1736 char *errstr = NULL;
1738 snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
1739 ERROR ("snmp plugin: host %s: snmp_sess_synch_response failed: %s",
1740 host->name, (errstr == NULL) ? "Unknown problem" : errstr);
1743 snmp_free_pdu (res);
1747 csnmp_host_close_session (host);
1753 for (vb = res->variables; vb != NULL; vb = vb->next_variable)
1757 snprint_variable (buffer, sizeof (buffer),
1758 vb->name, vb->name_length, vb);
1759 DEBUG ("snmp plugin: Got this variable: %s", buffer);
1760 #endif /* COLLECT_DEBUG */
1762 for (i = 0; i < data->values_len; i++)
1763 if (snmp_oid_compare (data->values[i].oid, data->values[i].oid_len,
1764 vb->name, vb->name_length) == 0)
1765 vl.values[i] = csnmp_value_list_to_value (vb, ds->ds[i].type,
1766 data->scale, data->shift, host->name, data->name);
1767 } /* for (res->variables) */
1770 snmp_free_pdu (res);
1773 DEBUG ("snmp plugin: -> plugin_dispatch_values (&vl);");
1774 plugin_dispatch_values (&vl);
1778 } /* int csnmp_read_value */
1780 static int csnmp_read_host (user_data_t *ud)
1782 host_definition_t *host;
1783 cdtime_t time_start;
1791 if (host->interval == 0)
1792 host->interval = plugin_get_interval ();
1794 time_start = cdtime ();
1796 if (host->sess_handle == NULL)
1797 csnmp_host_open_session (host);
1799 if (host->sess_handle == NULL)
1803 for (i = 0; i < host->data_list_len; i++)
1805 data_definition_t *data = host->data_list[i];
1808 status = csnmp_read_table (host, data);
1810 status = csnmp_read_value (host, data);
1816 time_end = cdtime ();
1817 if ((time_end - time_start) > host->interval)
1819 WARNING ("snmp plugin: Host `%s' should be queried every %.3f "
1820 "seconds, but reading all values takes %.3f seconds.",
1822 CDTIME_T_TO_DOUBLE (host->interval),
1823 CDTIME_T_TO_DOUBLE (time_end - time_start));
1830 } /* int csnmp_read_host */
1832 static int csnmp_init (void)
1834 call_snmp_init_once ();
1837 } /* int csnmp_init */
1839 static int csnmp_shutdown (void)
1841 data_definition_t *data_this;
1842 data_definition_t *data_next;
1844 /* When we get here, the read threads have been stopped and all the
1845 * `host_definition_t' will be freed. */
1846 DEBUG ("snmp plugin: Destroying all data definitions.");
1848 data_this = data_head;
1850 while (data_this != NULL)
1852 data_next = data_this->next;
1854 sfree (data_this->name);
1855 sfree (data_this->type);
1856 sfree (data_this->values);
1857 sfree (data_this->ignores);
1860 data_this = data_next;
1864 } /* int csnmp_shutdown */
1866 void module_register (void)
1868 plugin_register_complex_config ("snmp", csnmp_config);
1869 plugin_register_init ("snmp", csnmp_init);
1870 plugin_register_shutdown ("snmp", csnmp_shutdown);
1871 } /* void module_register */
1874 * vim: shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker