X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fsnmp.c;h=db36a098d65863727bb72ddff9e6095031811a46;hb=be121194cc100248d3f306bb3f658899b8da39fe;hp=37ee86da06a5275c14e5c93530cb584454b48428;hpb=4300502aab2fa2ddf683d24e12b0e61f93ee4c5b;p=collectd.git

diff --git a/src/snmp.c b/src/snmp.c
index 37ee86da..db36a098 100644
--- a/src/snmp.c
+++ b/src/snmp.c
@@ -53,8 +53,9 @@ typedef union instance_u instance_t;
 struct data_definition_s {
   char *name; /* used to reference this from the `Collect' option */
   char *type; /* used to find the data_set */
-  _Bool is_table;
+  bool is_table;
   instance_t instance;
+  char *plugin_name;
   char *instance_prefix;
   oid_t *values;
   size_t values_len;
@@ -63,7 +64,7 @@ struct data_definition_s {
   struct data_definition_s *next;
   char **ignores;
   size_t ignores_len;
-  int invert_match;
+  bool invert_match;
 };
 typedef struct data_definition_s data_definition_t;
 
@@ -71,7 +72,7 @@ struct host_definition_s {
   char *name;
   char *address;
   int version;
-  int timeout;
+  cdtime_t timeout;
   int retries;
 
   /* snmpv1/2 options */
@@ -115,7 +116,7 @@ typedef struct csnmp_table_values_s csnmp_table_values_t;
 /*
  * Private variables
  */
-static data_definition_t *data_head = NULL;
+static data_definition_t *data_head;
 
 /*
  * Prototypes
@@ -219,7 +220,7 @@ static void csnmp_host_definition_destroy(void *arg) /* {{{ */
  *      +-> csnmp_config_add_host_security_level
  */
 static void call_snmp_init_once(void) {
-  static int have_init = 0;
+  static int have_init;
 
   if (have_init == 0)
     init_snmp(PACKAGE_NAME);
@@ -315,9 +316,6 @@ static int csnmp_config_add_data_blacklist(data_definition_t *dd,
     }
   }
 
-  dd->ignores_len = 0;
-  dd->ignores = NULL;
-
   for (int i = 0; i < ci->values_num; ++i) {
     if (strarray_add(&(dd->ignores), &(dd->ignores_len),
                      ci->values[i].value.string) != 0) {
@@ -329,34 +327,27 @@ static int csnmp_config_add_data_blacklist(data_definition_t *dd,
   return 0;
 } /* int csnmp_config_add_data_blacklist */
 
-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_BOOLEAN)) {
-    WARNING("snmp plugin: `InvertMatch' needs exactly one boolean argument.");
-    return -1;
-  }
-
-  dd->invert_match = ci->values[0].value.boolean ? 1 : 0;
-
-  return 0;
-} /* 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;
-
-  dd = calloc(1, sizeof(*dd));
+  data_definition_t *dd = calloc(1, sizeof(*dd));
   if (dd == NULL)
     return -1;
 
-  status = cf_util_get_string(ci, &dd->name);
+  int status = cf_util_get_string(ci, &dd->name);
   if (status != 0) {
-    free(dd);
+    sfree(dd);
     return -1;
   }
 
   dd->scale = 1.0;
   dd->shift = 0.0;
+  dd->ignores_len = 0;
+  dd->ignores = NULL;
+
+  dd->plugin_name = strdup("snmp");
+  if (dd->plugin_name == NULL) {
+      ERROR("snmp plugin: Can't allocate memory");
+      return ENOMEM;
+  }
 
   for (int i = 0; i < ci->children_num; i++) {
     oconfig_item_t *option = ci->children + i;
@@ -365,6 +356,8 @@ static int csnmp_config_add_data(oconfig_item_t *ci) {
       status = cf_util_get_string(option, &dd->type);
     else if (strcasecmp("Table", option->key) == 0)
       status = cf_util_get_boolean(option, &dd->is_table);
+    else if (strcasecmp("Plugin", option->key) == 0)
+      status = cf_util_get_string(option, &dd->plugin_name);
     else if (strcasecmp("Instance", option->key) == 0)
       status = csnmp_config_add_data_instance(dd, option);
     else if (strcasecmp("InstancePrefix", option->key) == 0)
@@ -378,7 +371,7 @@ static int csnmp_config_add_data(oconfig_item_t *ci) {
     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);
+      status = cf_util_get_boolean(option, &dd->invert_match);
     else {
       WARNING("snmp plugin: Option `%s' not allowed here.", option->key);
       status = -1;
@@ -405,6 +398,8 @@ static int csnmp_config_add_data(oconfig_item_t *ci) {
 
   if (status != 0) {
     sfree(dd->name);
+    sfree(dd->type);
+    sfree(dd->plugin_name);
     sfree(dd->instance_prefix);
     sfree(dd->values);
     sfree(dd->ignores);
@@ -413,9 +408,8 @@ static int csnmp_config_add_data(oconfig_item_t *ci) {
   }
 
   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);
+        "%" PRIsz " }",
+        dd->name, dd->type, (dd->is_table) ? "true" : "false", dd->values_len);
 
   if (data_head == NULL)
     data_head = dd;
@@ -451,48 +445,6 @@ static int csnmp_config_add_host_version(host_definition_t *hd,
   return 0;
 } /* int csnmp_config_add_host_address */
 
-static int csnmp_config_add_host_timeout(host_definition_t *hd,
-                                         oconfig_item_t *ci) {
-  int timeout;
-
-  if (ci->values[0].type != OCONFIG_TYPE_NUMBER) {
-    WARNING("snmp plugin: `Timeout' must be a number");
-    return -1;
-  }
-
-  timeout = (int)ci->values[0].value.number;
-  if (timeout < 0) {
-    WARNING("snmp plugin: `Timeout' must not be negative");
-    return -1;
-  }
-
-  /* net-snmp library timeout is in microseconds */
-  hd->timeout = timeout * 1000000;
-
-  return 0;
-} /* int csnmp_config_add_host_timeout */
-
-static int csnmp_config_add_host_retries(host_definition_t *hd,
-                                         oconfig_item_t *ci) {
-  int retries;
-
-
-  if (ci->values[0].type != OCONFIG_TYPE_NUMBER) {
-    WARNING("snmp plugin: `Retries' must be a number");
-    return -1;
-  }
-
-  retries = (int)ci->values[0].value.number;
-  if (retries < 0) {
-    WARNING("snmp plugin: `Retries' must not be negative");
-    return -1;
-  }
-
-  hd->retries = retries;
-
-  return 0;
-} /* int csnmp_config_add_host_retries */
-
 static int csnmp_config_add_host_collect(host_definition_t *host,
                                          oconfig_item_t *ci) {
   data_definition_t *data;
@@ -641,9 +593,12 @@ static int csnmp_config_add_host(oconfig_item_t *ci) {
   hd->sess_handle = NULL;
   hd->interval = 0;
 
+  /* These mean that we have not set a timeout or retry value */
+  hd->timeout = 0;
+  hd->retries = -1;
+
   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 = cf_util_get_string(option, &hd->address);
@@ -652,13 +607,13 @@ static int csnmp_config_add_host(oconfig_item_t *ci) {
     else if (strcasecmp("Version", option->key) == 0)
       status = csnmp_config_add_host_version(hd, option);
     else if (strcasecmp("Timeout", option->key) == 0)
-      status = csnmp_config_add_host_timeout(hd, option);
+      status = cf_util_get_cdtime(option, &hd->timeout);
     else if (strcasecmp("Retries", option->key) == 0)
-      status = csnmp_config_add_host_retries(hd, option);
+      status = cf_util_get_int(option, &hd->retries);
     else if (strcasecmp("Collect", option->key) == 0)
-      csnmp_config_add_host_collect(hd, option);
+      status = csnmp_config_add_host_collect(hd, option);
     else if (strcasecmp("Interval", option->key) == 0)
-      cf_util_get_cdtime(option, &hd->interval);
+      status = 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)
@@ -851,9 +806,14 @@ static void csnmp_host_open_session(host_definition_t *host) {
     sess.community_len = strlen(host->community);
   }
 
-  /* Set timeout & retries */
-  sess.timeout = host->timeout;
-  sess.retries = host->retries;
+  /* Set timeout & retries, if they have been changed from the default */
+  if (host->timeout != 0) {
+    /* net-snmp expects microseconds */
+    sess.timeout = CDTIME_T_TO_US(host->timeout);
+  }
+  if (host->retries >= 0) {
+    sess.retries = host->retries;
+  }
 
   /* snmp_sess_open will copy the `struct snmp_session *'. */
   host->sess_handle = snmp_sess_open(&sess);
@@ -878,9 +838,9 @@ static value_t csnmp_value_list_to_value(struct variable_list *vl, int type,
   value_t ret;
   uint64_t tmp_unsigned = 0;
   int64_t tmp_signed = 0;
-  _Bool defined = 1;
+  bool defined = 1;
   /* Set to true when the original SNMP type appears to have been signed. */
-  _Bool prefer_signed = 0;
+  bool prefer_signed = 0;
 
   if ((vl->type == ASN_INTEGER) || (vl->type == ASN_UINTEGER) ||
       (vl->type == ASN_COUNTER)
@@ -1084,7 +1044,6 @@ 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; (vb != NULL) && (vb->next_variable != NULL);
@@ -1114,11 +1073,11 @@ static int csnmp_instance_list_add(csnmp_list_instances_t **head,
     char *ptr;
 
     csnmp_strvbcopy(il->instance, vb, sizeof(il->instance));
-    is_matched = 0;
+    bool 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) {
+        if (!dd->invert_match) {
           sfree(il);
           return 0;
         } else {
@@ -1127,7 +1086,7 @@ static int csnmp_instance_list_add(csnmp_list_instances_t **head,
         }
       }
     }
-    if (dd->invert_match != 0 && is_matched == 0) {
+    if (dd->invert_match && !is_matched) {
       sfree(il);
       return 0;
     }
@@ -1142,7 +1101,8 @@ static int csnmp_instance_list_add(csnmp_list_instances_t **head,
     value_t val = csnmp_value_list_to_value(
         vb, DS_TYPE_COUNTER,
         /* scale = */ 1.0, /* shift = */ 0.0, hd->name, dd->name);
-    snprintf(il->instance, sizeof(il->instance), "%llu", val.counter);
+    snprintf(il->instance, sizeof(il->instance), "%" PRIu64,
+             (uint64_t)val.counter);
   }
 
   /* TODO: Debugging output */
@@ -1167,7 +1127,7 @@ static int csnmp_dispatch_table(host_definition_t *host,
   csnmp_table_values_t *value_table_ptr[data->values_len];
 
   size_t i;
-  _Bool have_more;
+  bool have_more;
   oid_t current_suffix;
 
   ds = plugin_get_ds(data->type);
@@ -1184,13 +1144,13 @@ static int csnmp_dispatch_table(host_definition_t *host,
     value_table_ptr[i] = value_table[i];
 
   sstrncpy(vl.host, host->name, sizeof(vl.host));
-  sstrncpy(vl.plugin, "snmp", sizeof(vl.plugin));
+  sstrncpy(vl.plugin, data->plugin_name, sizeof(vl.plugin));
 
   vl.interval = host->interval;
 
   have_more = 1;
   while (have_more) {
-    _Bool suffix_skipped = 0;
+    bool suffix_skipped = 0;
 
     /* Determine next suffix to handle. */
     if (instance_list != NULL) {
@@ -1316,7 +1276,7 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
   oid_t oid_list[oid_list_len];
   /* Set to false when an OID has left its subtree so we don't re-request it
    * again. */
-  _Bool oid_list_todo[oid_list_len];
+  bool oid_list_todo[oid_list_len];
 
   int status;
   size_t i;
@@ -1345,8 +1305,9 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
   }
 
   if (ds->ds_num != data->values_len) {
-    ERROR("snmp plugin: DataSet `%s' requires %zu values, but config talks "
-          "about %zu",
+    ERROR("snmp plugin: DataSet `%s' requires %" PRIsz
+          " values, but config talks "
+          "about %" PRIsz,
           data->type, ds->ds_num, data->values_len);
     return -1;
   }
@@ -1481,8 +1442,12 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
     for (vb = res->variables, i = 0; (vb != NULL);
          vb = vb->next_variable, i++) {
       /* Calculate value index from todo list */
-      while ((i < oid_list_len) && !oid_list_todo[i])
+      while ((i < oid_list_len) && !oid_list_todo[i]) {
         i++;
+      }
+      if (i >= oid_list_len) {
+        break;
+      }
 
       /* An instance is configured and the res variable we process is the
        * instance value (last index) */
@@ -1519,7 +1484,7 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
          * suffix is increasing. This also checks if we left the subtree */
         ret = csnmp_oid_suffix(&suffix, &vb_name, data->values + i);
         if (ret != 0) {
-          DEBUG("snmp plugin: host = %s; data = %s; i = %zu; "
+          DEBUG("snmp plugin: host = %s; data = %s; i = %" PRIsz "; "
                 "Value probably left its subtree.",
                 host->name, data->name, i);
           oid_list_todo[i] = 0;
@@ -1531,7 +1496,7 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
          * table matching algorithm will get confused. */
         if ((value_list_tail[i] != NULL) &&
             (csnmp_oid_compare(&suffix, &value_list_tail[i]->suffix) <= 0)) {
-          DEBUG("snmp plugin: host = %s; data = %s; i = %zu; "
+          DEBUG("snmp plugin: host = %s; data = %s; i = %" PRIsz "; "
                 "Suffix is not increasing.",
                 host->name, data->name, i);
           oid_list_todo[i] = 0;
@@ -1573,7 +1538,6 @@ static int csnmp_read_table(host_definition_t *host, data_definition_t *data) {
     snmp_free_pdu(res);
   res = NULL;
 
-
   if (status == 0)
     csnmp_dispatch_table(host, data, instance_list_head, value_list_head);
 
@@ -1624,8 +1588,9 @@ static int csnmp_read_value(host_definition_t *host, data_definition_t *data) {
   }
 
   if (ds->ds_num != data->values_len) {
-    ERROR("snmp plugin: DataSet `%s' requires %zu values, but config talks "
-          "about %zu",
+    ERROR("snmp plugin: DataSet `%s' requires %" PRIsz
+          " values, but config talks "
+          "about %" PRIsz,
           data->type, ds->ds_num, data->values_len);
     return -1;
   }
@@ -1642,7 +1607,7 @@ static int csnmp_read_value(host_definition_t *host, data_definition_t *data) {
   }
 
   sstrncpy(vl.host, host->name, sizeof(vl.host));
-  sstrncpy(vl.plugin, "snmp", sizeof(vl.plugin));
+  sstrncpy(vl.plugin, data->plugin_name, sizeof(vl.plugin));
   sstrncpy(vl.type, data->type, sizeof(vl.type));
   sstrncpy(vl.type_instance, data->instance.string, sizeof(vl.type_instance));
 
@@ -1758,6 +1723,8 @@ static int csnmp_shutdown(void) {
 
     sfree(data_this->name);
     sfree(data_this->type);
+    sfree(data_this->plugin_name);
+    sfree(data_this->instance_prefix);
     sfree(data_this->values);
     sfree(data_this->ignores);
     sfree(data_this);