X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fsnmp.c;h=408defa9b4ea385336d66d429d10560422fb6b59;hb=e7929dac268957cbbd9082717759c3917ac1b51e;hp=8673df199e9ffe135993986a24f5cc1e1607b50e;hpb=44b7ae5761481f8853c70ececd46437c6d0d8c9e;p=collectd.git

diff --git a/src/snmp.c b/src/snmp.c
index 8673df19..408defa9 100644
--- a/src/snmp.c
+++ b/src/snmp.c
@@ -656,24 +656,10 @@ static int csnmp_config (oconfig_item_t *ci)
 
 static void csnmp_host_close_session (host_definition_t *host)
 {
-  int status;
-
   if (host->sess_handle == NULL)
     return;
 
-  status = snmp_sess_close (host->sess_handle);
-
-  if (status != 0)
-  {
-    char *errstr = NULL;
-
-    snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
-
-    ERROR ("snmp plugin: host %s: snmp_sess_close failed: %s",
-	host->name, (errstr == NULL) ? "Unknown problem" : errstr);
-    sfree (errstr);
-  }
-
+  snmp_sess_close (host->sess_handle);
   host->sess_handle = NULL;
 } /* void csnmp_host_close_session */
 
@@ -721,14 +707,14 @@ static value_t csnmp_value_list_to_value (struct variable_list *vl, int type,
       || (vl->type == ASN_GAUGE))
   {
     temp = (uint32_t) *vl->val.integer;
-    DEBUG ("snmp plugin: Parsed int32 value is %llu.", temp);
+    DEBUG ("snmp plugin: Parsed int32 value is %"PRIu64".", temp);
   }
   else if (vl->type == ASN_COUNTER64)
   {
     temp = (uint32_t) vl->val.counter64->high;
     temp = temp << 32;
     temp += (uint32_t) vl->val.counter64->low;
-    DEBUG ("snmp plugin: Parsed int64 value is %llu.", temp);
+    DEBUG ("snmp plugin: Parsed int64 value is %"PRIu64".", temp);
   }
   else
   {
@@ -793,7 +779,7 @@ static int csnmp_check_res_left_subtree (const host_definition_t *host,
     if (vb == NULL)
     {
       ERROR ("snmp plugin: host %s: Expected one more variable for "
-	  "the instance..");
+	  "the instance..", host->name);
       return (-1);
     }
 
@@ -923,7 +909,7 @@ static int csnmp_dispatch_table (host_definition_t *host, data_definition_t *dat
 
   strncpy (vl.host, host->name, sizeof (vl.host));
   vl.host[sizeof (vl.host) - 1] = '\0';
-  strcpy (vl.plugin, "snmp");
+  sstrncpy (vl.plugin, "snmp", sizeof (vl.plugin));
 
   vl.interval = host->interval;
   vl.time = time (NULL);
@@ -1107,15 +1093,22 @@ static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
     for (i = 0; i < oid_list_len; i++)
       snmp_add_null_var (req, oid_list[i].oid, oid_list[i].oid_len);
 
+    res = NULL;
     status = snmp_sess_synch_response (host->sess_handle, req, &res);
 
-    if (status != STAT_SUCCESS)
+    if ((status != STAT_SUCCESS) || (res == NULL))
     {
       char *errstr = NULL;
 
       snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
       ERROR ("snmp plugin: host %s: snmp_sess_synch_response failed: %s",
 	  host->name, (errstr == NULL) ? "Unknown problem" : errstr);
+
+      if (res != NULL)
+	snmp_free_pdu (res);
+      res = NULL;
+
+      sfree (errstr);
       csnmp_host_close_session (host);
 
       status = -1;
@@ -1134,7 +1127,10 @@ static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
     /* Check if all values (and possibly the instance) have left their
      * subtree */
     if (csnmp_check_res_left_subtree (host, data, res) != 0)
+    {
+      status = 0;
       break;
+    }
 
     /* if an instance-OID is configured.. */
     if (data->instance.oid.oid_len > 0)
@@ -1154,11 +1150,7 @@ static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
 	  (vb != NULL) && (vb->next_variable != NULL);
 	  vb = vb->next_variable)
 	/* do nothing */;
-      if (vb == NULL)
-      {
-	status = -1;
-	break;
-      }
+      assert (vb != NULL);
 
       /* Copy OID to oid_list[data->values_len] */
       memcpy (oid_list[data->values_len].oid, vb->name,
@@ -1221,6 +1213,10 @@ static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
     res = NULL;
   } /* while (status == 0) */
 
+  if (res != NULL)
+    snmp_free_pdu (res);
+  res = NULL;
+
   if (status == 0)
     csnmp_dispatch_table (host, data, instance_list, value_table);
 
@@ -1298,7 +1294,7 @@ static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
 
   strncpy (vl.host, host->name, sizeof (vl.host));
   vl.host[sizeof (vl.host) - 1] = '\0';
-  strcpy (vl.plugin, "snmp");
+  sstrncpy (vl.plugin, "snmp", sizeof (vl.plugin));
   strncpy (vl.type_instance, data->instance.string, sizeof (vl.type_instance));
   vl.type_instance[sizeof (vl.type_instance) - 1] = '\0';
 
@@ -1314,17 +1310,24 @@ static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
 
   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)
+  if ((status != STAT_SUCCESS) || (res == NULL))
   {
     char *errstr = NULL;
 
     snmp_sess_error (host->sess_handle, NULL, NULL, &errstr);
     ERROR ("snmp plugin: host %s: snmp_sess_synch_response failed: %s",
 	host->name, (errstr == NULL) ? "Unknown problem" : errstr);
-    csnmp_host_close_session (host);
+
+    if (res != NULL)
+      snmp_free_pdu (res);
+    res = NULL;
+
     sfree (errstr);
+    csnmp_host_close_session (host);
 
     return (-1);
   }
@@ -1347,7 +1350,9 @@ static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
 	    data->scale, data->shift);
   } /* for (res->variables) */
 
-  snmp_free_pdu (res);
+  if (res != NULL)
+    snmp_free_pdu (res);
+  res = NULL;
 
   DEBUG ("snmp plugin: -> plugin_dispatch_values (%s, &vl);", data->type);
   plugin_dispatch_values (data->type, &vl);
@@ -1388,8 +1393,8 @@ static int csnmp_read_host (host_definition_t *host)
   if ((time_end - time_start) > host->interval)
   {
     WARNING ("snmp plugin: Host `%s' should be queried every %i seconds, "
-	"but reading all values takes %i seconds.",
-	host->name, host->interval, time_end - time_start);
+	"but reading all values takes %u seconds.",
+	host->name, host->interval, (unsigned int) (time_end - time_start));
   }
 
   return (0);