}
static int csnmp_oid_compare(oid_t const *left, oid_t const *right) {
- return (
- snmp_oid_compare(left->oid, left->oid_len, right->oid, right->oid_len));
+ return snmp_oid_compare(left->oid, left->oid_len, right->oid,
+ right->oid_len);
}
static int csnmp_oid_suffix(oid_t *dst, oid_t const *src, oid_t const *root) {
/* Make sure "src" is in "root"s subtree. */
if (src->oid_len <= root->oid_len)
- return (EINVAL);
+ return EINVAL;
if (snmp_oid_ncompare(root->oid, root->oid_len, src->oid, src->oid_len,
/* n = */ root->oid_len) != 0)
- return (EINVAL);
+ return EINVAL;
memset(dst, 0, sizeof(*dst));
dst->oid_len = src->oid_len - root->oid_len;
memcpy(dst->oid, &src->oid[root->oid_len],
dst->oid_len * sizeof(dst->oid[0]));
- return (0);
+ return 0;
}
static int csnmp_oid_to_string(char *buffer, size_t buffer_size,
oid_str_ptr[i] = oid_str[i];
}
- return (strjoin(buffer, buffer_size, oid_str_ptr, o->oid_len,
- /* separator = */ "."));
+ return strjoin(buffer, buffer_size, oid_str_ptr, o->oid_len, ".");
}
static void csnmp_host_close_session(host_definition_t *host) /* {{{ */
if (!read_objid(buffer, dd->instance.oid.oid, &dd->instance.oid.oid_len)) {
ERROR("snmp plugin: read_objid (%s) failed.", buffer);
- return (-1);
+ return -1;
}
} else {
/* Instance is a simple string */
sstrncpy(dd->instance.string, buffer, sizeof(dd->instance.string));
}
- return (0);
+ return 0;
} /* int csnmp_config_add_data_instance */
static int csnmp_config_add_data_instance_prefix(data_definition_t *dd,
WARNING("snmp plugin: data %s: InstancePrefix is ignored when `Table' "
"is set to `false'.",
dd->name);
- return (-1);
+ return -1;
}
status = cf_util_get_string(ci, &dd->instance_prefix);
oconfig_item_t *ci) {
if (ci->values_num < 1) {
WARNING("snmp plugin: `Values' needs at least one argument.");
- return (-1);
+ return -1;
}
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.");
- return (-1);
+ return -1;
}
sfree(dd->values);
dd->values_len = 0;
dd->values = malloc(sizeof(*dd->values) * ci->values_num);
if (dd->values == NULL)
- return (-1);
+ return -1;
dd->values_len = (size_t)ci->values_num;
for (int i = 0; i < ci->values_num; i++) {
free(dd->values);
dd->values = NULL;
dd->values_len = 0;
- return (-1);
+ return -1;
}
}
- return (0);
+ return 0;
} /* int csnmp_config_add_data_instance */
static int csnmp_config_add_data_blacklist(data_definition_t *dd,
oconfig_item_t *ci) {
if (ci->values_num < 1)
- return (0);
+ return 0;
for (int i = 0; i < ci->values_num; i++) {
if (ci->values[i].type != OCONFIG_TYPE_STRING) {
WARNING("snmp plugin: `Ignore' needs only string argument.");
- return (-1);
+ return -1;
}
}
ci->values[i].value.string) != 0) {
ERROR("snmp plugin: Can't allocate memory");
strarray_free(dd->ignores, dd->ignores_len);
- return (ENOMEM);
+ return ENOMEM;
}
}
return 0;
oconfig_item_t *ci) {
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN)) {
WARNING("snmp plugin: `InvertMatch' needs exactly one boolean argument.");
- return (-1);
+ return -1;
}
dd->invert_match = ci->values[0].value.boolean ? 1 : 0;
- return (0);
+ return 0;
} /* int csnmp_config_add_data_blacklist_match_inverted */
static int csnmp_config_add_data(oconfig_item_t *ci) {
dd = calloc(1, sizeof(*dd));
if (dd == NULL)
- return (-1);
+ return -1;
status = cf_util_get_string(ci, &dd->name);
if (status != 0) {
free(dd);
- return (-1);
+ return -1;
}
dd->scale = 1.0;
sfree(dd->values);
sfree(dd->ignores);
sfree(dd);
- return (-1);
+ return -1;
}
DEBUG("snmp plugin: dd = { name = %s, type = %s, is_table = %s, values_len = "
last->next = dd;
}
- return (0);
+ return 0;
} /* int csnmp_config_add_data */
static int csnmp_config_add_host_version(host_definition_t *hd,
if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) {
WARNING("snmp plugin: The `Version' config option needs exactly one number "
"argument.");
- return (-1);
+ return -1;
}
version = (int)ci->values[0].value.number;
if ((version < 1) || (version > 3)) {
WARNING("snmp plugin: `Version' must either be `1', `2', or `3'.");
- return (-1);
+ return -1;
}
hd->version = version;
- return (0);
+ return 0;
} /* int csnmp_config_add_host_address */
static int csnmp_config_add_host_collect(host_definition_t *host,
if (ci->values_num < 1) {
WARNING("snmp plugin: `Collect' needs at least one argument.");
- return (-1);
+ return -1;
}
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.");
- return (-1);
+ return -1;
}
data_list_len = host->data_list_len + ci->values_num;
data_list =
realloc(host->data_list, sizeof(data_definition_t *) * data_list_len);
if (data_list == NULL)
- return (-1);
+ return -1;
host->data_list = data_list;
for (int i = 0; i < ci->values_num; i++) {
host->data_list_len++;
} /* for (values_num) */
- return (0);
+ return 0;
} /* int csnmp_config_add_host_collect */
static int csnmp_config_add_host_auth_protocol(host_definition_t *hd,
} else {
WARNING("snmp plugin: The `AuthProtocol' config option must be `MD5' or "
"`SHA'.");
- return (-1);
+ return -1;
}
DEBUG("snmp plugin: host = %s; host->auth_protocol = %s;", hd->name,
hd->auth_protocol == usmHMACMD5AuthProtocol ? "MD5" : "SHA");
- return (0);
+ return 0;
} /* int csnmp_config_add_host_auth_protocol */
static int csnmp_config_add_host_priv_protocol(host_definition_t *hd,
} else {
WARNING("snmp plugin: The `PrivProtocol' config option must be `AES' or "
"`DES'.");
- return (-1);
+ return -1;
}
DEBUG("snmp plugin: host = %s; host->priv_protocol = %s;", hd->name,
hd->priv_protocol == usmAESPrivProtocol ? "AES" : "DES");
- return (0);
+ return 0;
} /* int csnmp_config_add_host_priv_protocol */
static int csnmp_config_add_host_security_level(host_definition_t *hd,
else {
WARNING("snmp plugin: The `SecurityLevel' config option must be "
"`noAuthNoPriv', `authNoPriv', or `authPriv'.");
- return (-1);
+ return -1;
}
DEBUG("snmp plugin: host = %s; host->security_level = %d;", hd->name,
hd->security_level);
- return (0);
+ return 0;
} /* int csnmp_config_add_host_security_level */
static int csnmp_config_add_host(oconfig_item_t *ci) {
hd = calloc(1, sizeof(*hd));
if (hd == NULL)
- return (-1);
+ return -1;
hd->version = 2;
C_COMPLAIN_INIT(&hd->complaint);
if (status != 0) {
csnmp_host_definition_destroy(hd);
- return (-1);
+ return -1;
}
DEBUG("snmp plugin: hd = { name = %s, address = %s, community = %s, version "
if (status != 0) {
ERROR("snmp plugin: Registering complex read function failed.");
csnmp_host_definition_destroy(hd);
- return (-1);
+ return -1;
}
- return (0);
+ return 0;
} /* int csnmp_config_add_host */
static int csnmp_config(oconfig_item_t *ci) {
}
} /* for (ci->children) */
- return (0);
+ return 0;
} /* int csnmp_config */
/* }}} End of the config stuff. Now the interesting part begins */
ret.gauge = NAN;
}
- return (ret);
+ return ret;
} /* value_t csnmp_value_list_to_value */
/* csnmp_strvbcopy_hexstring converts the bit string contained in "vb" to a hex
(uint8_t)vb->val.string[2], (uint8_t)vb->val.string[3]);
} else {
dst[0] = 0;
- return (EINVAL);
+ return EINVAL;
}
num_chars = dst_size - 1;
for (size_t i = 0; i < num_chars; i++) {
/* Check for control characters. */
if ((unsigned char)src[i] < 32)
- return (csnmp_strvbcopy_hexstring(dst, vb, dst_size));
+ return csnmp_strvbcopy_hexstring(dst, vb, dst_size);
dst[i] = src[i];
}
dst[num_chars] = 0;
vb = vb->next_variable)
/* do nothing */;
if (vb == NULL)
- return (-1);
+ return -1;
csnmp_oid_init(&vb_name, vb->name, vb->name_length);
il = calloc(1, sizeof(*il));
if (il == NULL) {
ERROR("snmp plugin: calloc failed.");
- return (-1);
+ return -1;
}
il->next = NULL;
status = csnmp_oid_suffix(&il->suffix, &vb_name, &dd->instance.oid);
if (status != 0) {
sfree(il);
- return (status);
+ return status;
}
/* Get instance name */
(*tail)->next = il;
*tail = il;
- return (0);
+ return 0;
} /* int csnmp_instance_list_add */
static int csnmp_dispatch_table(host_definition_t *host,
value_list_t vl = VALUE_LIST_INIT;
csnmp_list_instances_t *instance_list_ptr;
- csnmp_table_values_t **value_table_ptr;
+ csnmp_table_values_t *value_table_ptr[data->values_len];
size_t i;
_Bool have_more;
ds = plugin_get_ds(data->type);
if (!ds) {
ERROR("snmp plugin: DataSet `%s' not defined.", data->type);
- return (-1);
+ return -1;
}
assert(ds->ds_num == data->values_len);
assert(data->values_len > 0);
instance_list_ptr = instance_list;
- 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++)
value_table_ptr[i] = value_table[i];
- vl.values_len = data->values_len;
- vl.values = malloc(sizeof(*vl.values) * vl.values_len);
- if (vl.values == NULL) {
- ERROR("snmp plugin: malloc failed.");
- sfree(value_table_ptr);
- return (-1);
- }
-
sstrncpy(vl.host, host->name, sizeof(vl.host));
sstrncpy(vl.plugin, "snmp", sizeof(vl.plugin));
memcpy(¤t_suffix, &instance_list_ptr->suffix,
sizeof(current_suffix));
- } else /* no instance configured */
- {
+ } else {
+ /* no instance configured */
csnmp_table_values_t *ptr = value_table_ptr[0];
if (ptr == NULL) {
have_more = 0;
data->instance_prefix, temp);
}
+ vl.values_len = data->values_len;
+ value_t values[vl.values_len];
+ vl.values = values;
+
for (i = 0; i < data->values_len; i++)
vl.values[i] = value_table_ptr[i]->value;
if (vl.type_instance[0] != '\0')
plugin_dispatch_values(&vl);
+ /* prevent leakage of pointer to local variable. */
+ vl.values_len = 0;
+ vl.values = NULL;
+
if (instance_list != NULL)
instance_list_ptr = instance_list_ptr->next;
else
value_table_ptr[0] = value_table_ptr[0]->next;
} /* while (have_more) */
- sfree(vl.values);
- sfree(value_table_ptr);
-
return (0);
} /* int csnmp_dispatch_table */
if (host->sess_handle == NULL) {
DEBUG("snmp plugin: csnmp_read_table: host->sess_handle == NULL");
- return (-1);
+ return -1;
}
ds = plugin_get_ds(data->type);
if (!ds) {
ERROR("snmp plugin: DataSet `%s' not defined.", data->type);
- return (-1);
+ return -1;
}
if (ds->ds_num != data->values_len) {
ERROR("snmp plugin: DataSet `%s' requires %zu values, but config talks "
"about %zu",
data->type, ds->ds_num, data->values_len);
- return (-1);
+ return -1;
}
assert(data->values_len > 0);
ERROR("snmp plugin: csnmp_read_table: calloc failed.");
sfree(value_list_head);
sfree(value_list_tail);
- return (-1);
+ return -1;
}
instance_list_head = NULL;
sfree(value_list_head);
sfree(value_list_tail);
- return (0);
+ return 0;
} /* int csnmp_read_table */
static int csnmp_read_value(host_definition_t *host, data_definition_t *data) {
if (host->sess_handle == NULL) {
DEBUG("snmp plugin: csnmp_read_value: host->sess_handle == NULL");
- return (-1);
+ return -1;
}
ds = plugin_get_ds(data->type);
if (!ds) {
ERROR("snmp plugin: DataSet `%s' not defined.", data->type);
- return (-1);
+ return -1;
}
if (ds->ds_num != data->values_len) {
ERROR("snmp plugin: DataSet `%s' requires %zu values, but config talks "
"about %zu",
data->type, ds->ds_num, data->values_len);
- return (-1);
+ return -1;
}
vl.values_len = ds->ds_num;
vl.values = malloc(sizeof(*vl.values) * vl.values_len);
if (vl.values == NULL)
- return (-1);
+ return -1;
for (i = 0; i < vl.values_len; i++) {
if (ds->ds[i].type == DS_TYPE_COUNTER)
vl.values[i].counter = 0;
if (req == NULL) {
ERROR("snmp plugin: snmp_pdu_create failed.");
sfree(vl.values);
- return (-1);
+ return -1;
}
for (i = 0; i < data->values_len; i++)
sfree(vl.values);
csnmp_host_close_session(host);
- return (-1);
+ return -1;
}
for (vb = res->variables; vb != NULL; vb = vb->next_variable) {
plugin_dispatch_values(&vl);
sfree(vl.values);
- return (0);
+ return 0;
} /* int csnmp_read_value */
static int csnmp_read_host(user_data_t *ud) {
csnmp_host_open_session(host);
if (host->sess_handle == NULL)
- return (-1);
+ return -1;
success = 0;
for (i = 0; i < host->data_list_len; i++) {
}
if (success == 0)
- return (-1);
+ return -1;
- return (0);
+ return 0;
} /* int csnmp_read_host */
static int csnmp_init(void) {
call_snmp_init_once();
- return (0);
+ return 0;
} /* int csnmp_init */
static int csnmp_shutdown(void) {
data_this = data_next;
}
- return (0);
+ return 0;
} /* int csnmp_shutdown */
void module_register(void) {
plugin_register_init("snmp", csnmp_init);
plugin_register_shutdown("snmp", csnmp_shutdown);
} /* void module_register */
-
-/*
- * vim: shiftwidth=2 softtabstop=2 tabstop=8 fdm=marker
- */