curl_xml: fix 3 small memory leaks

[collectd.git] / src / curl_xml.c

diff --git a/src/curl_xml.c b/src/curl_xml.c
index b941f02..e96bba3 100644 (file)
--- a/src/curl_xml.c
+++ b/src/curl_xml.c
@@ -300,6 +300,7 @@ static int cx_handle_single_value_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
 
   /* free up object */
   xmlXPathFreeObject (values_node_obj);
+  sfree (node_value);
 
   /* We have reached here which means that
    * we have got something to work */
@@ -344,7 +345,7 @@ static int cx_handle_instance_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
   /* If the base xpath returns more than one block, the result is assumed to be
    * a table. The `Instnce' option is not optional in this case. Check for the
    * condition and inform the user. */
-  if (is_table && (vl->type_instance == NULL))
+  if (is_table && (xpath->instance == NULL))
   {
     WARNING ("curl_xml plugin: "
         "Base-XPath %s is a table (more than one result was returned), "
@@ -397,8 +398,12 @@ static int cx_handle_instance_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
   if (xpath->instance_prefix != NULL)
   {
     if (instance_node != NULL)
+    {
+      char *node_value = (char *) xmlNodeGetContent(instance_node->nodeTab[0]);
       ssnprintf (vl->type_instance, sizeof (vl->type_instance),"%s%s",
-          xpath->instance_prefix, (char *) xmlNodeGetContent(instance_node->nodeTab[0]));
+          xpath->instance_prefix, node_value);
+      sfree (node_value);
+    }
     else
       sstrncpy (vl->type_instance, xpath->instance_prefix,
           sizeof (vl->type_instance));
@@ -408,8 +413,11 @@ static int cx_handle_instance_xpath (xmlXPathContextPtr xpath_ctx, /* {{{ */
     /* If instance_prefix and instance_node are NULL, then
      * don't set the type_instance */
     if (instance_node != NULL)
-      sstrncpy (vl->type_instance, (char *) xmlNodeGetContent(instance_node->nodeTab[0]),
-          sizeof (vl->type_instance));
+    {
+      char *node_value = (char *) xmlNodeGetContent(instance_node->nodeTab[0]);
+      sstrncpy (vl->type_instance, node_value, sizeof (vl->type_instance));
+      sfree (node_value);
+    }
   }
 
   /* Free `instance_node_obj' this late, because `instance_node' points to
@@ -926,9 +934,18 @@ static int cx_config (oconfig_item_t *ci) /* {{{ */
   return (0);
 } /* }}} int cx_config */
 
+static int cx_init (void) /* {{{ */
+{
+  /* Call this while collectd is still single-threaded to avoid
+   * initialization issues in libgcrypt. */
+  curl_global_init (CURL_GLOBAL_SSL);
+  return (0);
+} /* }}} int cx_init */
+
 void module_register (void)
 {
   plugin_register_complex_config ("curl_xml", cx_config);
+  plugin_register_init ("curl_xml", cx_init);
 } /* void module_register */
 
 /* vim: set sw=2 sts=2 et fdm=marker : */