* collectd - src/snmp.c
* Copyright (C) 2007-2012 Florian octo Forster
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
* Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
+
#include "common.h"
#include "plugin.h"
#include "utils_complain.h"
-#include <pthread.h>
-
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
+#include <fnmatch.h>
+
/*
* Private data structes
*/
{
char *name; /* used to reference this from the `Collect' option */
char *type; /* used to find the data_set */
- int is_table;
+ _Bool is_table;
instance_t instance;
char *instance_prefix;
oid_t *values;
- int values_len;
+ size_t values_len;
double scale;
double shift;
struct data_definition_s *next;
+ char **ignores;
+ size_t ignores_len;
+ int invert_match;
};
typedef struct data_definition_s data_definition_t;
{
char *name;
char *address;
- char *community;
int version;
+
+ /* snmpv1/2 options */
+ char *community;
+
+ /* snmpv3 security options */
+ char *username;
+ oid *auth_protocol;
+ size_t auth_protocol_len;
+ char *auth_passphrase;
+ oid *priv_protocol;
+ size_t priv_protocol_len;
+ char *priv_passphrase;
+ int security_level;
+ char *context;
+
void *sess_handle;
c_complain_t complaint;
cdtime_t interval;
{
char oid_str[MAX_OID_LEN][16];
char *oid_str_ptr[MAX_OID_LEN];
- size_t i;
- for (i = 0; i < o->oid_len; i++)
+ for (size_t i = 0; i < o->oid_len; i++)
{
ssnprintf (oid_str[i], sizeof (oid_str[i]), "%lu", (unsigned long) o->oid[i]);
oid_str_ptr[i] = oid_str[i];
sfree (hd->name);
sfree (hd->address);
sfree (hd->community);
+ sfree (hd->username);
+ sfree (hd->auth_passphrase);
+ sfree (hd->priv_passphrase);
+ sfree (hd->context);
sfree (hd->data_list);
sfree (hd);
* csnmp_config
* +-> call_snmp_init_once
* +-> csnmp_config_add_data
- * ! +-> csnmp_config_add_data_type
- * ! +-> csnmp_config_add_data_table
* ! +-> csnmp_config_add_data_instance
* ! +-> csnmp_config_add_data_instance_prefix
* ! +-> csnmp_config_add_data_values
* +-> csnmp_config_add_host
- * +-> csnmp_config_add_host_address
- * +-> csnmp_config_add_host_community
* +-> csnmp_config_add_host_version
* +-> csnmp_config_add_host_collect
+ * +-> csnmp_config_add_host_auth_protocol
+ * +-> csnmp_config_add_host_priv_protocol
+ * +-> csnmp_config_add_host_security_level
*/
static void call_snmp_init_once (void)
{
have_init = 1;
} /* void call_snmp_init_once */
-static int csnmp_config_add_data_type (data_definition_t *dd, oconfig_item_t *ci)
-{
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: `Type' needs exactly one string argument.");
- return (-1);
- }
-
- sfree (dd->type);
- dd->type = strdup (ci->values[0].value.string);
- if (dd->type == NULL)
- return (-1);
-
- return (0);
-} /* int csnmp_config_add_data_type */
-
-static int csnmp_config_add_data_table (data_definition_t *dd, oconfig_item_t *ci)
-{
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
- {
- WARNING ("snmp plugin: `Table' needs exactly one boolean argument.");
- return (-1);
- }
-
- dd->is_table = ci->values[0].value.boolean ? 1 : 0;
-
- return (0);
-} /* int csnmp_config_add_data_table */
-
static int csnmp_config_add_data_instance (data_definition_t *dd, oconfig_item_t *ci)
{
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: `Instance' needs exactly one string argument.");
- return (-1);
- }
+ char buffer[DATA_MAX_NAME_LEN];
+ int status;
+
+ status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
+ if (status != 0)
+ return status;
if (dd->is_table)
{
/* Instance is an OID */
dd->instance.oid.oid_len = MAX_OID_LEN;
- if (!read_objid (ci->values[0].value.string,
+ if (!read_objid (buffer,
dd->instance.oid.oid, &dd->instance.oid.oid_len))
{
- ERROR ("snmp plugin: read_objid (%s) failed.",
- ci->values[0].value.string);
+ ERROR ("snmp plugin: read_objid (%s) failed.", buffer);
return (-1);
}
}
else
{
/* Instance is a simple string */
- sstrncpy (dd->instance.string, ci->values[0].value.string,
+ sstrncpy (dd->instance.string, buffer,
sizeof (dd->instance.string));
}
static int csnmp_config_add_data_instance_prefix (data_definition_t *dd,
oconfig_item_t *ci)
{
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: `InstancePrefix' needs exactly one string argument.");
- return (-1);
- }
+ int status;
if (!dd->is_table)
{
return (-1);
}
- sfree (dd->instance_prefix);
- dd->instance_prefix = strdup (ci->values[0].value.string);
- if (dd->instance_prefix == NULL)
- return (-1);
-
- return (0);
+ status = cf_util_get_string(ci, &dd->instance_prefix);
+ return status;
} /* int csnmp_config_add_data_instance_prefix */
static int csnmp_config_add_data_values (data_definition_t *dd, oconfig_item_t *ci)
{
- int i;
-
if (ci->values_num < 1)
{
WARNING ("snmp plugin: `Values' needs at least one argument.");
return (-1);
}
- for (i = 0; i < ci->values_num; i++)
+ for (int i = 0; i < ci->values_num; i++)
if (ci->values[i].type != OCONFIG_TYPE_STRING)
{
WARNING ("snmp plugin: `Values' needs only string argument.");
sfree (dd->values);
dd->values_len = 0;
- dd->values = (oid_t *) malloc (sizeof (oid_t) * ci->values_num);
+ dd->values = malloc (sizeof (*dd->values) * ci->values_num);
if (dd->values == NULL)
return (-1);
- dd->values_len = ci->values_num;
+ dd->values_len = (size_t) ci->values_num;
- for (i = 0; i < ci->values_num; i++)
+ for (int i = 0; i < ci->values_num; i++)
{
dd->values[i].oid_len = MAX_OID_LEN;
return (0);
} /* int csnmp_config_add_data_instance */
-static int csnmp_config_add_data_shift (data_definition_t *dd, oconfig_item_t *ci)
+static int csnmp_config_add_data_blacklist(data_definition_t *dd, oconfig_item_t *ci)
{
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
+ if (ci->values_num < 1)
+ return (0);
+
+ for (int i = 0; i < ci->values_num; i++)
{
- WARNING ("snmp plugin: The `Shift' config option needs exactly one number argument.");
- return (-1);
+ if (ci->values[i].type != OCONFIG_TYPE_STRING)
+ {
+ WARNING ("snmp plugin: `Ignore' needs only string argument.");
+ return (-1);
+ }
}
- dd->shift = ci->values[0].value.number;
+ dd->ignores_len = 0;
+ dd->ignores = NULL;
- return (0);
-} /* int csnmp_config_add_data_shift */
+ for (int i = 0; i < ci->values_num; ++i)
+ {
+ if (strarray_add(&(dd->ignores), &(dd->ignores_len), ci->values[i].value.string) != 0)
+ {
+ ERROR("snmp plugin: Can't allocate memory");
+ strarray_free(dd->ignores, dd->ignores_len);
+ return (ENOMEM);
+ }
+ }
+ return 0;
+} /* int csnmp_config_add_data_blacklist */
-static int csnmp_config_add_data_scale (data_definition_t *dd, oconfig_item_t *ci)
+static int csnmp_config_add_data_blacklist_match_inverted(data_definition_t *dd, oconfig_item_t *ci)
{
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
+ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
{
- WARNING ("snmp plugin: The `Scale' config option needs exactly one number argument.");
+ WARNING ("snmp plugin: `InvertMatch' needs exactly one boolean argument.");
return (-1);
}
- dd->scale = ci->values[0].value.number;
+ dd->invert_match = ci->values[0].value.boolean ? 1 : 0;
return (0);
-} /* int csnmp_config_add_data_scale */
+} /* int csnmp_config_add_data_blacklist_match_inverted */
static int csnmp_config_add_data (oconfig_item_t *ci)
{
data_definition_t *dd;
int status = 0;
- int i;
-
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: The `Data' config option needs exactly one string argument.");
- return (-1);
- }
- dd = (data_definition_t *) malloc (sizeof (data_definition_t));
+ dd = calloc (1, sizeof (*dd));
if (dd == NULL)
return (-1);
- memset (dd, '\0', sizeof (data_definition_t));
- dd->name = strdup (ci->values[0].value.string);
- if (dd->name == NULL)
+ status = cf_util_get_string(ci, &dd->name);
+ if (status != 0)
{
free (dd);
return (-1);
}
+
dd->scale = 1.0;
dd->shift = 0.0;
- for (i = 0; i < ci->children_num; i++)
+ for (int i = 0; i < ci->children_num; i++)
{
oconfig_item_t *option = ci->children + i;
if (strcasecmp ("Type", option->key) == 0)
- status = csnmp_config_add_data_type (dd, option);
+ status = cf_util_get_string(option, &dd->type);
else if (strcasecmp ("Table", option->key) == 0)
- status = csnmp_config_add_data_table (dd, option);
+ status = cf_util_get_boolean(option, &dd->is_table);
else if (strcasecmp ("Instance", option->key) == 0)
status = csnmp_config_add_data_instance (dd, option);
else if (strcasecmp ("InstancePrefix", option->key) == 0)
else if (strcasecmp ("Values", option->key) == 0)
status = csnmp_config_add_data_values (dd, option);
else if (strcasecmp ("Shift", option->key) == 0)
- status = csnmp_config_add_data_shift (dd, option);
+ status = cf_util_get_double(option, &dd->shift);
else if (strcasecmp ("Scale", option->key) == 0)
- status = csnmp_config_add_data_scale (dd, option);
+ status = cf_util_get_double(option, &dd->scale);
+ else if (strcasecmp ("Ignore", option->key) == 0)
+ status = csnmp_config_add_data_blacklist(dd, option);
+ else if (strcasecmp ("InvertMatch", option->key) == 0)
+ status = csnmp_config_add_data_blacklist_match_inverted(dd, option);
else
{
WARNING ("snmp plugin: Option `%s' not allowed here.", option->key);
sfree (dd->name);
sfree (dd->instance_prefix);
sfree (dd->values);
+ sfree (dd->ignores);
sfree (dd);
return (-1);
}
- DEBUG ("snmp plugin: dd = { name = %s, type = %s, is_table = %s, values_len = %i }",
+ DEBUG ("snmp plugin: dd = { name = %s, type = %s, is_table = %s, values_len = %zu }",
dd->name, dd->type, (dd->is_table != 0) ? "true" : "false", dd->values_len);
if (data_head == NULL)
return (0);
} /* int csnmp_config_add_data */
-static int csnmp_config_add_host_address (host_definition_t *hd, oconfig_item_t *ci)
-{
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: The `Address' config option needs exactly one string argument.");
- return (-1);
- }
-
- if (hd->address == NULL)
- free (hd->address);
-
- hd->address = strdup (ci->values[0].value.string);
- if (hd->address == NULL)
- return (-1);
-
- DEBUG ("snmp plugin: host = %s; host->address = %s;",
- hd->name, hd->address);
-
- return (0);
-} /* int csnmp_config_add_host_address */
-
-static int csnmp_config_add_host_community (host_definition_t *hd, oconfig_item_t *ci)
-{
- if ((ci->values_num != 1)
- || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: The `Community' config option needs exactly one string argument.");
- return (-1);
- }
-
- if (hd->community == NULL)
- free (hd->community);
-
- hd->community = strdup (ci->values[0].value.string);
- if (hd->community == NULL)
- return (-1);
-
- DEBUG ("snmp plugin: host = %s; host->community = %s;",
- hd->name, hd->community);
-
- return (0);
-} /* int csnmp_config_add_host_community */
-
static int csnmp_config_add_host_version (host_definition_t *hd, oconfig_item_t *ci)
{
int version;
}
version = (int) ci->values[0].value.number;
- if ((version != 1) && (version != 2))
+ if ((version < 1) || (version > 3))
{
- WARNING ("snmp plugin: `Version' must either be `1' or `2'.");
+ WARNING ("snmp plugin: `Version' must either be `1', `2', or `3'.");
return (-1);
}
data_definition_t *data;
data_definition_t **data_list;
int data_list_len;
- int i;
if (ci->values_num < 1)
{
return (-1);
}
- for (i = 0; i < ci->values_num; i++)
+ for (int i = 0; i < ci->values_num; i++)
if (ci->values[i].type != OCONFIG_TYPE_STRING)
{
WARNING ("snmp plugin: All arguments to `Collect' must be strings.");
}
data_list_len = host->data_list_len + ci->values_num;
- data_list = (data_definition_t **) realloc (host->data_list,
+ data_list = realloc (host->data_list,
sizeof (data_definition_t *) * data_list_len);
if (data_list == NULL)
return (-1);
host->data_list = data_list;
- for (i = 0; i < ci->values_num; i++)
+ for (int i = 0; i < ci->values_num; i++)
{
for (data = data_head; data != NULL; data = data->next)
if (strcasecmp (ci->values[i].value.string, data->name) == 0)
return (0);
} /* int csnmp_config_add_host_collect */
+static int csnmp_config_add_host_auth_protocol (host_definition_t *hd, oconfig_item_t *ci)
+{
+ char buffer[4];
+ int status;
+
+ status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
+ if (status != 0)
+ return status;
+
+ if (strcasecmp("MD5", buffer) == 0) {
+ hd->auth_protocol = usmHMACMD5AuthProtocol;
+ hd->auth_protocol_len = sizeof(usmHMACMD5AuthProtocol)/sizeof(oid);
+ }
+ else if (strcasecmp("SHA", buffer) == 0) {
+ hd->auth_protocol = usmHMACSHA1AuthProtocol;
+ hd->auth_protocol_len = sizeof(usmHMACSHA1AuthProtocol)/sizeof(oid);
+ }
+ else
+ {
+ WARNING ("snmp plugin: The `AuthProtocol' config option must be `MD5' or `SHA'.");
+ return (-1);
+ }
+
+ DEBUG ("snmp plugin: host = %s; host->auth_protocol = %s;",
+ hd->name, hd->auth_protocol == usmHMACMD5AuthProtocol ? "MD5" : "SHA");
+
+ return (0);
+} /* int csnmp_config_add_host_auth_protocol */
+
+static int csnmp_config_add_host_priv_protocol (host_definition_t *hd, oconfig_item_t *ci)
+{
+ char buffer[4];
+ int status;
+
+ status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
+ if (status != 0)
+ return status;
+
+ if (strcasecmp("AES", buffer) == 0)
+ {
+ hd->priv_protocol = usmAESPrivProtocol;
+ hd->priv_protocol_len = sizeof(usmAESPrivProtocol)/sizeof(oid);
+ }
+ else if (strcasecmp("DES", buffer) == 0) {
+ hd->priv_protocol = usmDESPrivProtocol;
+ hd->priv_protocol_len = sizeof(usmDESPrivProtocol)/sizeof(oid);
+ }
+ else
+ {
+ WARNING ("snmp plugin: The `PrivProtocol' config option must be `AES' or `DES'.");
+ return (-1);
+ }
+
+ DEBUG ("snmp plugin: host = %s; host->priv_protocol = %s;",
+ hd->name, hd->priv_protocol == usmAESPrivProtocol ? "AES" : "DES");
+
+ return (0);
+} /* int csnmp_config_add_host_priv_protocol */
+
+static int csnmp_config_add_host_security_level (host_definition_t *hd, oconfig_item_t *ci)
+{
+ char buffer[16];
+ int status;
+
+ status = cf_util_get_string_buffer(ci, buffer, sizeof(buffer));
+ if (status != 0)
+ return status;
+
+ if (strcasecmp("noAuthNoPriv", buffer) == 0)
+ hd->security_level = SNMP_SEC_LEVEL_NOAUTH;
+ else if (strcasecmp("authNoPriv", buffer) == 0)
+ hd->security_level = SNMP_SEC_LEVEL_AUTHNOPRIV;
+ else if (strcasecmp("authPriv", buffer) == 0)
+ hd->security_level = SNMP_SEC_LEVEL_AUTHPRIV;
+ else
+ {
+ WARNING ("snmp plugin: The `SecurityLevel' config option must be `noAuthNoPriv', `authNoPriv', or `authPriv'.");
+ return (-1);
+ }
+
+ DEBUG ("snmp plugin: host = %s; host->security_level = %d;",
+ hd->name, hd->security_level);
+
+ return (0);
+} /* int csnmp_config_add_host_security_level */
+
static int csnmp_config_add_host (oconfig_item_t *ci)
{
host_definition_t *hd;
int status = 0;
- int i;
/* Registration stuff. */
char cb_name[DATA_MAX_NAME_LEN];
- user_data_t cb_data;
- struct timespec cb_interval;
-
- if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
- {
- WARNING ("snmp plugin: `Host' needs exactly one string argument.");
- return (-1);
- }
- hd = (host_definition_t *) malloc (sizeof (host_definition_t));
+ hd = calloc (1, sizeof (*hd));
if (hd == NULL)
return (-1);
- memset (hd, '\0', sizeof (host_definition_t));
hd->version = 2;
C_COMPLAIN_INIT (&hd->complaint);
- hd->name = strdup (ci->values[0].value.string);
- if (hd->name == NULL)
+ status = cf_util_get_string(ci, &hd->name);
+ if (status != 0)
{
- free (hd);
- return (-1);
+ sfree (hd);
+ return status;
}
hd->sess_handle = NULL;
hd->interval = 0;
- for (i = 0; i < ci->children_num; i++)
+ for (int i = 0; i < ci->children_num; i++)
{
oconfig_item_t *option = ci->children + i;
status = 0;
if (strcasecmp ("Address", option->key) == 0)
- status = csnmp_config_add_host_address (hd, option);
+ status = cf_util_get_string(option, &hd->address);
else if (strcasecmp ("Community", option->key) == 0)
- status = csnmp_config_add_host_community (hd, option);
+ status = cf_util_get_string(option, &hd->community);
else if (strcasecmp ("Version", option->key) == 0)
status = csnmp_config_add_host_version (hd, option);
else if (strcasecmp ("Collect", option->key) == 0)
csnmp_config_add_host_collect (hd, option);
else if (strcasecmp ("Interval", option->key) == 0)
cf_util_get_cdtime (option, &hd->interval);
+ else if (strcasecmp ("Username", option->key) == 0)
+ status = cf_util_get_string(option, &hd->username);
+ else if (strcasecmp ("AuthProtocol", option->key) == 0)
+ status = csnmp_config_add_host_auth_protocol (hd, option);
+ else if (strcasecmp ("PrivacyProtocol", option->key) == 0)
+ status = csnmp_config_add_host_priv_protocol (hd, option);
+ else if (strcasecmp ("AuthPassphrase", option->key) == 0)
+ status = cf_util_get_string(option, &hd->auth_passphrase);
+ else if (strcasecmp ("PrivacyPassphrase", option->key) == 0)
+ status = cf_util_get_string(option, &hd->priv_passphrase);
+ else if (strcasecmp ("SecurityLevel", option->key) == 0)
+ status = csnmp_config_add_host_security_level (hd, option);
+ else if (strcasecmp ("Context", option->key) == 0)
+ status = cf_util_get_string(option, &hd->context);
else
{
WARNING ("snmp plugin: csnmp_config_add_host: Option `%s' not allowed here.", option->key);
status = -1;
break;
}
- if (hd->community == NULL)
+ if (hd->community == NULL && hd->version < 3)
{
WARNING ("snmp plugin: `Community' not given for host `%s'", hd->name);
status = -1;
break;
}
+ if (hd->version == 3)
+ {
+ if (hd->username == NULL)
+ {
+ WARNING ("snmp plugin: `Username' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ if (hd->security_level == 0)
+ {
+ WARNING ("snmp plugin: `SecurityLevel' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ if (hd->security_level == SNMP_SEC_LEVEL_AUTHNOPRIV || hd->security_level == SNMP_SEC_LEVEL_AUTHPRIV)
+ {
+ if (hd->auth_protocol == NULL)
+ {
+ WARNING ("snmp plugin: `AuthProtocol' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ if (hd->auth_passphrase == NULL)
+ {
+ WARNING ("snmp plugin: `AuthPassphrase' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ }
+ if (hd->security_level == SNMP_SEC_LEVEL_AUTHPRIV)
+ {
+ if (hd->priv_protocol == NULL)
+ {
+ WARNING ("snmp plugin: `PrivacyProtocol' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ if (hd->priv_passphrase == NULL)
+ {
+ WARNING ("snmp plugin: `PrivacyPassphrase' not given for host `%s'", hd->name);
+ status = -1;
+ break;
+ }
+ }
+ }
break;
} /* while (status == 0) */
ssnprintf (cb_name, sizeof (cb_name), "snmp-%s", hd->name);
- memset (&cb_data, 0, sizeof (cb_data));
- cb_data.data = hd;
- cb_data.free_func = csnmp_host_definition_destroy;
-
- CDTIME_T_TO_TIMESPEC (hd->interval, &cb_interval);
-
status = plugin_register_complex_read (/* group = */ NULL, cb_name,
- csnmp_read_host, /* interval = */ &cb_interval,
- /* user_data = */ &cb_data);
+ csnmp_read_host, hd->interval, &(user_data_t) {
+ .data = hd,
+ .free_func = csnmp_host_definition_destroy,
+ });
if (status != 0)
{
ERROR ("snmp plugin: Registering complex read function failed.");
static int csnmp_config (oconfig_item_t *ci)
{
- int i;
-
call_snmp_init_once ();
- for (i = 0; i < ci->children_num; i++)
+ for (int i = 0; i < ci->children_num; i++)
{
oconfig_item_t *child = ci->children + i;
if (strcasecmp ("Data", child->key) == 0)
static void csnmp_host_open_session (host_definition_t *host)
{
struct snmp_session sess;
+ int error;
if (host->sess_handle != NULL)
csnmp_host_close_session (host);
snmp_sess_init (&sess);
sess.peername = host->address;
- sess.community = (u_char *) host->community;
- sess.community_len = strlen (host->community);
- sess.version = (host->version == 1) ? SNMP_VERSION_1 : SNMP_VERSION_2c;
+ switch (host->version)
+ {
+ case 1:
+ sess.version = SNMP_VERSION_1;
+ break;
+ case 3:
+ sess.version = SNMP_VERSION_3;
+ break;
+ default:
+ sess.version = SNMP_VERSION_2c;
+ break;
+ }
+
+ if (host->version == 3)
+ {
+ sess.securityName = host->username;
+ sess.securityNameLen = strlen (host->username);
+ sess.securityLevel = host->security_level;
+
+ if (sess.securityLevel == SNMP_SEC_LEVEL_AUTHNOPRIV || sess.securityLevel == SNMP_SEC_LEVEL_AUTHPRIV)
+ {
+ sess.securityAuthProto = host->auth_protocol;
+ sess.securityAuthProtoLen = host->auth_protocol_len;
+ sess.securityAuthKeyLen = USM_AUTH_KU_LEN;
+ error = generate_Ku (sess.securityAuthProto,
+ sess.securityAuthProtoLen,
+ (u_char *) host->auth_passphrase,
+ strlen(host->auth_passphrase),
+ sess.securityAuthKey,
+ &sess.securityAuthKeyLen);
+ if (error != SNMPERR_SUCCESS) {
+ ERROR ("snmp plugin: host %s: Error generating Ku from auth_passphrase. (Error %d)", host->name, error);
+ }
+ }
+
+ if (sess.securityLevel == SNMP_SEC_LEVEL_AUTHPRIV)
+ {
+ sess.securityPrivProto = host->priv_protocol;
+ sess.securityPrivProtoLen = host->priv_protocol_len;
+ sess.securityPrivKeyLen = USM_PRIV_KU_LEN;
+ error = generate_Ku (sess.securityAuthProto,
+ sess.securityAuthProtoLen,
+ (u_char *) host->priv_passphrase,
+ strlen(host->priv_passphrase),
+ sess.securityPrivKey,
+ &sess.securityPrivKeyLen);
+ if (error != SNMPERR_SUCCESS) {
+ ERROR ("snmp plugin: host %s: Error generating Ku from priv_passphrase. (Error %d)", host->name, error);
+ }
+ }
+
+ if (host->context != NULL)
+ {
+ sess.contextName = host->context;
+ sess.contextNameLen = strlen (host->context);
+ }
+ }
+ else /* SNMPv1/2 "authenticates" with community string */
+ {
+ sess.community = (u_char *) host->community;
+ sess.community_len = strlen (host->community);
+ }
/* snmp_sess_open will copy the `struct snmp_session *'. */
host->sess_handle = snmp_sess_open (&sess);
}
else
{
- char oid_buffer[1024];
+ char oid_buffer[1024] = { 0 };
- memset (oid_buffer, 0, sizeof (oid_buffer));
snprint_objid (oid_buffer, sizeof (oid_buffer) - 1,
vl->name, vl->name_length);
status = parse_value (string, &ret, type);
if (status != 0)
{
- ERROR ("snmp plugin: csnmp_value_list_to_value: Parsing string as %s failed: %s",
+ ERROR ("snmp plugin: host %s: csnmp_value_list_to_value: Parsing string as %s failed: %s",
+ (host_name != NULL) ? host_name : "UNKNOWN",
DS_TYPE_TO_STRING (type), string);
}
}
return (ret);
} /* value_t csnmp_value_list_to_value */
+/* csnmp_strvbcopy_hexstring converts the bit string contained in "vb" to a hex
+ * representation and writes it to dst. Returns zero on success and ENOMEM if
+ * dst is not large enough to hold the string. dst is guaranteed to be
+ * nul-terminated. */
static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
char *buffer_ptr;
size_t buffer_free;
- size_t i;
+
+ dst[0] = 0;
buffer_ptr = dst;
buffer_free = dst_size;
- for (i = 0; i < vb->val_len; i++)
+ for (size_t i = 0; i < vb->val_len; i++)
{
int status;
status = snprintf (buffer_ptr, buffer_free,
(i == 0) ? "%02x" : ":%02x", (unsigned int) vb->val.bitstring[i]);
+ assert (status >= 0);
- if (status >= buffer_free)
+ if (((size_t) status) >= buffer_free) /* truncated */
{
- buffer_ptr += (buffer_free - 1);
- *buffer_ptr = 0;
- return (dst_size + (buffer_free - status));
+ dst[dst_size - 1] = 0;
+ return ENOMEM;
}
else /* if (status < buffer_free) */
{
- buffer_ptr += status;
- buffer_free -= status;
+ buffer_ptr += (size_t) status;
+ buffer_free -= (size_t) status;
}
}
- return ((int) (dst_size - buffer_free));
+ return 0;
} /* }}} int csnmp_strvbcopy_hexstring */
+/* csnmp_strvbcopy copies the octet string or bit string contained in vb to
+ * dst. If non-printable characters are detected, it will switch to a hex
+ * representation of the string. Returns zero on success, EINVAL if vb does not
+ * contain a string and ENOMEM if dst is not large enough to contain the
+ * string. */
static int csnmp_strvbcopy (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
char *src;
size_t num_chars;
- size_t i;
if (vb->type == ASN_OCTET_STR)
src = (char *) vb->val.string;
else if (vb->type == ASN_BIT_STR)
src = (char *) vb->val.bitstring;
+ else if (vb->type == ASN_IPADDRESS)
+ {
+ return ssnprintf (dst, dst_size, "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8"",
+ (uint8_t) vb->val.string[0],
+ (uint8_t) vb->val.string[1],
+ (uint8_t) vb->val.string[2],
+ (uint8_t) vb->val.string[3]);
+ }
else
{
dst[0] = 0;
if (num_chars > vb->val_len)
num_chars = vb->val_len;
- for (i = 0; i < num_chars; i++)
+ for (size_t i = 0; i < num_chars; i++)
{
/* Check for control characters. */
if ((unsigned char)src[i] < 32)
dst[i] = src[i];
}
dst[num_chars] = 0;
+ dst[dst_size - 1] = 0;
+
+ if (dst_size <= vb->val_len)
+ return ENOMEM;
- return ((int) vb->val_len);
+ return 0;
} /* }}} int csnmp_strvbcopy */
static int csnmp_instance_list_add (csnmp_list_instances_t **head,
struct variable_list *vb;
oid_t vb_name;
int status;
+ uint32_t is_matched;
/* Set vb on the last variable */
for (vb = res->variables;
csnmp_oid_init (&vb_name, vb->name, vb->name_length);
- il = malloc (sizeof (*il));
+ il = calloc (1, sizeof (*il));
if (il == NULL)
{
- ERROR ("snmp plugin: malloc failed.");
+ ERROR ("snmp plugin: calloc failed.");
return (-1);
}
- memset (il, 0, sizeof (*il));
il->next = NULL;
status = csnmp_oid_suffix (&il->suffix, &vb_name, &dd->instance.oid);
}
/* Get instance name */
- if ((vb->type == ASN_OCTET_STR) || (vb->type == ASN_BIT_STR))
+ if ((vb->type == ASN_OCTET_STR) || (vb->type == ASN_BIT_STR) || (vb->type == ASN_IPADDRESS))
{
char *ptr;
csnmp_strvbcopy (il->instance, vb, sizeof (il->instance));
-
+ is_matched = 0;
+ for (uint32_t i = 0; i < dd->ignores_len; i++)
+ {
+ status = fnmatch(dd->ignores[i], il->instance, 0);
+ if (status == 0)
+ {
+ if (dd->invert_match == 0)
+ {
+ sfree(il);
+ return 0;
+ }
+ else
+ {
+ is_matched = 1;
+ break;
+ }
+ }
+ }
+ if (dd->invert_match != 0 && is_matched == 0)
+ {
+ sfree(il);
+ return 0;
+ }
for (ptr = il->instance; *ptr != '\0'; ptr++)
{
if ((*ptr > 0) && (*ptr < 32))
csnmp_list_instances_t *instance_list_ptr;
csnmp_table_values_t **value_table_ptr;
- int i;
+ size_t i;
_Bool have_more;
oid_t current_suffix;
instance_list_ptr = instance_list;
- value_table_ptr = calloc ((size_t) data->values_len, sizeof (*value_table_ptr));
+ value_table_ptr = calloc (data->values_len, sizeof (*value_table_ptr));
if (value_table_ptr == NULL)
return (-1);
for (i = 0; i < data->values_len; i++)
vl.interval = host->interval;
have_more = 1;
- memset (¤t_suffix, 0, sizeof (current_suffix));
while (have_more)
{
_Bool suffix_skipped = 0;
for (i = 0; i < data->values_len; i++)
vl.values[i] = value_table_ptr[i]->value;
- /* If we get here `vl.type_instance' and all `vl.values' have been set */
- plugin_dispatch_values (&vl);
+ /* If we get here `vl.type_instance' and all `vl.values' have been set
+ * vl.type_instance can be empty, i.e. a blank port description on a
+ * switch if you're using IF-MIB::ifDescr as Instance.
+ */
+ if (vl.type_instance[0] != '\0')
+ plugin_dispatch_values (&vl);
if (instance_list != NULL)
instance_list_ptr = instance_list_ptr->next;
const data_set_t *ds;
- uint32_t oid_list_len = (uint32_t) (data->values_len + 1);
+ size_t oid_list_len = data->values_len + 1;
/* Holds the last OID returned by the device. We use this in the GETNEXT
* request to proceed. */
oid_t oid_list[oid_list_len];
_Bool oid_list_todo[oid_list_len];
int status;
- int i;
- uint32_t j;
+ size_t i;
/* `value_list_head' and `value_list_tail' implement a linked list for each
* value. `instance_list_head' and `instance_list_tail' implement a linked list of
if (ds->ds_num != data->values_len)
{
- ERROR ("snmp plugin: DataSet `%s' requires %i values, but config talks about %i",
+ ERROR ("snmp plugin: DataSet `%s' requires %zu values, but config talks about %zu",
data->type, ds->ds_num, data->values_len);
return (-1);
}
else /* no InstanceFrom option specified. */
oid_list_len--;
- for (j = 0; j < oid_list_len; j++)
- oid_list_todo[j] = 1;
+ for (i = 0; i < oid_list_len; i++)
+ oid_list_todo[i] = 1;
/* We're going to construct n linked lists, one for each "value".
* value_list_head will contain pointers to the heads of these linked lists,
}
oid_list_todo_num = 0;
- for (j = 0; j < oid_list_len; j++)
+ for (i = 0; i < oid_list_len; i++)
{
/* Do not rerequest already finished OIDs */
- if (!oid_list_todo[j])
+ if (!oid_list_todo[i])
continue;
oid_list_todo_num++;
- snmp_add_null_var (req, oid_list[j].oid, oid_list[j].oid_len);
+ snmp_add_null_var (req, oid_list[i].oid, oid_list[i].oid_len);
}
if (oid_list_todo_num == 0)
if (csnmp_instance_list_add (&instance_list_head, &instance_list_tail,
res, host, data) != 0)
{
- ERROR ("snmp plugin: csnmp_instance_list_add failed.");
+ ERROR ("snmp plugin: host %s: csnmp_instance_list_add failed.",
+ host->name);
status = -1;
break;
}
ret = csnmp_oid_suffix (&suffix, &vb_name, data->values + i);
if (ret != 0)
{
- DEBUG ("snmp plugin: host = %s; data = %s; i = %i; "
+ DEBUG ("snmp plugin: host = %s; data = %s; i = %zu; "
"Value probably left its subtree.",
host->name, data->name, i);
oid_list_todo[i] = 0;
if ((value_list_tail[i] != NULL)
&& (csnmp_oid_compare (&suffix, &value_list_tail[i]->suffix) <= 0))
{
- DEBUG ("snmp plugin: host = %s; data = %s; i = %i; "
+ DEBUG ("snmp plugin: host = %s; data = %s; i = %zu; "
"Suffix is not increasing.",
host->name, data->name, i);
oid_list_todo[i] = 0;
continue;
}
- vt = malloc (sizeof (*vt));
+ vt = calloc (1, sizeof (*vt));
if (vt == NULL)
{
- ERROR ("snmp plugin: malloc failed.");
+ ERROR ("snmp plugin: calloc failed.");
status = -1;
break;
}
- memset (vt, 0, sizeof (*vt));
vt->value = csnmp_value_list_to_value (vb, ds->ds[i].type,
data->scale, data->shift, host->name, data->name);
static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
{
struct snmp_pdu *req;
- struct snmp_pdu *res;
+ struct snmp_pdu *res = NULL;
struct variable_list *vb;
const data_set_t *ds;
value_list_t vl = VALUE_LIST_INIT;
int status;
- int i;
+ size_t i;
DEBUG ("snmp plugin: csnmp_read_value (host = %s, data = %s)",
host->name, data->name);
if (ds->ds_num != data->values_len)
{
- ERROR ("snmp plugin: DataSet `%s' requires %i values, but config talks about %i",
+ ERROR ("snmp plugin: DataSet `%s' requires %zu values, but config talks about %zu",
data->type, ds->ds_num, data->values_len);
return (-1);
}
vl.values_len = ds->ds_num;
- vl.values = (value_t *) malloc (sizeof (value_t) * vl.values_len);
+ vl.values = malloc (sizeof (*vl.values) * vl.values_len);
if (vl.values == NULL)
return (-1);
for (i = 0; i < vl.values_len; i++)
for (i = 0; i < data->values_len; i++)
snmp_add_null_var (req, data->values[i].oid, data->values[i].oid_len);
- res = NULL;
status = snmp_sess_synch_response (host->sess_handle, req, &res);
if ((status != STAT_SUCCESS) || (res == NULL))
if (res != NULL)
snmp_free_pdu (res);
- res = NULL;
sfree (errstr);
sfree (vl.values);
data->scale, data->shift, host->name, data->name);
} /* for (res->variables) */
- if (res != NULL)
- snmp_free_pdu (res);
- res = NULL;
+ snmp_free_pdu (res);
DEBUG ("snmp plugin: -> plugin_dispatch_values (&vl);");
plugin_dispatch_values (&vl);
static int csnmp_read_host (user_data_t *ud)
{
host_definition_t *host;
- cdtime_t time_start;
- cdtime_t time_end;
int status;
int success;
int i;
if (host->interval == 0)
host->interval = plugin_get_interval ();
- time_start = cdtime ();
-
if (host->sess_handle == NULL)
csnmp_host_open_session (host);
success++;
}
- time_end = cdtime ();
- if ((time_end - time_start) > host->interval)
- {
- WARNING ("snmp plugin: Host `%s' should be queried every %.3f "
- "seconds, but reading all values takes %.3f seconds.",
- host->name,
- CDTIME_T_TO_DOUBLE (host->interval),
- CDTIME_T_TO_DOUBLE (time_end - time_start));
- }
-
if (success == 0)
return (-1);
sfree (data_this->name);
sfree (data_this->type);
sfree (data_this->values);
+ sfree (data_this->ignores);
sfree (data_this);
data_this = data_next;
projects / collectd.git / blobdiff