X-Git-Url: https://git.octo.it/?p=collectd.git;a=blobdiff_plain;f=src%2Fbind.c;h=370ebc58dc0710afcc874c483a474b3be97aa3a8;hp=38761775fa70dac5badbd53e8c859e8594de02ad;hb=ec51ddee94fa2ba1e01fe0e336ccc9c190a198ff;hpb=9717b1a55d60d992c16e66e2ae5bdfb42f80aca8

diff --git a/src/bind.c b/src/bind.c
index 38761775..370ebc58 100644
--- a/src/bind.c
+++ b/src/bind.c
@@ -35,11 +35,19 @@
 #endif
 #endif /* STRPTIME_NEEDS_STANDARDS */
 
+#if TIMEGM_NEEDS_BSD
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE 1
+#endif
+#endif /* TIMEGM_NEEDS_BSD */
+
 #include "collectd.h"
 
 #include "common.h"
 #include "plugin.h"
 
+#include <time.h>
+
 /* Some versions of libcurl don't include this themselves and then don't have
  * fd_set available. */
 #if HAVE_SYS_SELECT_H
@@ -96,25 +104,25 @@ typedef struct list_info_ptr_s list_info_ptr_t;
 
 /* FIXME: Enabled by default for backwards compatibility. */
 /* TODO: Remove time parsing code. */
-static _Bool config_parse_time = 1;
+static bool config_parse_time = true;
 
-static char *url = NULL;
+static char *url;
 static int global_opcodes = 1;
 static int global_qtypes = 1;
 static int global_server_stats = 1;
 static int global_zone_maint_stats = 1;
-static int global_resolver_stats = 0;
+static int global_resolver_stats;
 static int global_memory_stats = 1;
 static int timeout = -1;
 
-static cb_view_t *views = NULL;
-static size_t views_num = 0;
+static cb_view_t *views;
+static size_t views_num;
 
-static CURL *curl = NULL;
+static CURL *curl;
 
-static char *bind_buffer = NULL;
-static size_t bind_buffer_size = 0;
-static size_t bind_buffer_fill = 0;
+static char *bind_buffer;
+static size_t bind_buffer_size;
+static size_t bind_buffer_fill;
 static char bind_curl_error[CURL_ERROR_SIZE];
 
 /* Translation table for the `nsstats' values. */
@@ -263,15 +271,13 @@ static size_t bind_curl_callback(void *buf, size_t size, /* {{{ */
   size_t len = size * nmemb;
 
   if (len == 0)
-    return (len);
+    return len;
 
   if ((bind_buffer_fill + len) >= bind_buffer_size) {
-    char *temp;
-
-    temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
+    char *temp = realloc(bind_buffer, bind_buffer_fill + len + 1);
     if (temp == NULL) {
       ERROR("bind plugin: realloc failed.");
-      return (0);
+      return 0;
     }
     bind_buffer = temp;
     bind_buffer_size = bind_buffer_fill + len + 1;
@@ -281,7 +287,7 @@ static size_t bind_curl_callback(void *buf, size_t size, /* {{{ */
   bind_buffer_fill += len;
   bind_buffer[bind_buffer_fill] = 0;
 
-  return (len);
+  return len;
 } /* }}} size_t bind_curl_callback */
 
 /*
@@ -293,7 +299,7 @@ static int bind_xml_table_callback(const char *name, value_t value, /* {{{ */
   translation_table_ptr_t *table = (translation_table_ptr_t *)user_data;
 
   if (table == NULL)
-    return (-1);
+    return -1;
 
   for (size_t i = 0; i < table->table_length; i++) {
     if (strcmp(table->table[i].xml_name, name) != 0)
@@ -304,7 +310,7 @@ static int bind_xml_table_callback(const char *name, value_t value, /* {{{ */
     break;
   }
 
-  return (0);
+  return 0;
 } /* }}} int bind_xml_table_callback */
 
 /*
@@ -317,52 +323,48 @@ static int bind_xml_list_callback(const char *name, /* {{{ */
   list_info_ptr_t *list_info = (list_info_ptr_t *)user_data;
 
   if (list_info == NULL)
-    return (-1);
+    return -1;
 
   submit(current_time, list_info->plugin_instance, list_info->type,
          /* type instance = */ name, value);
 
-  return (0);
+  return 0;
 } /* }}} int bind_xml_list_callback */
 
 static int bind_xml_read_derive(xmlDoc *doc, xmlNode *node, /* {{{ */
                                 derive_t *ret_value) {
-  char *str_ptr;
-  value_t value;
-  int status;
-
-  str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
+  char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
   if (str_ptr == NULL) {
     ERROR("bind plugin: bind_xml_read_derive: xmlNodeListGetString failed.");
-    return (-1);
+    return -1;
   }
 
-  status = parse_value(str_ptr, &value, DS_TYPE_DERIVE);
+  value_t value;
+
+  int status = parse_value(str_ptr, &value, DS_TYPE_DERIVE);
   if (status != 0) {
     ERROR("bind plugin: Parsing string \"%s\" to derive value failed.",
           str_ptr);
     xmlFree(str_ptr);
-    return (-1);
+    return -1;
   }
 
   xmlFree(str_ptr);
   *ret_value = value.derive;
-  return (0);
+  return 0;
 } /* }}} int bind_xml_read_derive */
 
 static int bind_xml_read_gauge(xmlDoc *doc, xmlNode *node, /* {{{ */
                                gauge_t *ret_value) {
-  char *str_ptr, *end_ptr;
-  double value;
-
-  str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
+  char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
   if (str_ptr == NULL) {
     ERROR("bind plugin: bind_xml_read_gauge: xmlNodeListGetString failed.");
-    return (-1);
+    return -1;
   }
 
+  char *end_ptr;
   errno = 0;
-  value = strtod(str_ptr, &end_ptr);
+  double value = strtod(str_ptr, &end_ptr);
   xmlFree(str_ptr);
   if (str_ptr == end_ptr || errno) {
     if (errno && (value < 0))
@@ -371,32 +373,27 @@ static int bind_xml_read_gauge(xmlDoc *doc, xmlNode *node, /* {{{ */
       ERROR("bind plugin: bind_xml_read_gauge: strtod failed with overflow.");
     else
       ERROR("bind plugin: bind_xml_read_gauge: strtod failed.");
-    return (-1);
+    return -1;
   }
 
   *ret_value = (gauge_t)value;
-  return (0);
+  return 0;
 } /* }}} int bind_xml_read_gauge */
 
 static int bind_xml_read_timestamp(const char *xpath_expression, /* {{{ */
                                    xmlDoc *doc, xmlXPathContext *xpathCtx,
                                    time_t *ret_value) {
-  xmlXPathObject *xpathObj = NULL;
-  xmlNode *node;
-  char *str_ptr;
-  char *tmp;
-  struct tm tm = {0};
-
-  xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
+  xmlXPathObject *xpathObj =
+      xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
   if (xpathObj == NULL) {
     ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
           xpath_expression);
-    return (-1);
+    return -1;
   }
 
   if ((xpathObj->nodesetval == NULL) || (xpathObj->nodesetval->nodeNr < 1)) {
     xmlXPathFreeObject(xpathObj);
-    return (-1);
+    return -1;
   }
 
   if (xpathObj->nodesetval->nodeNr != 1) {
@@ -405,34 +402,52 @@ static int bind_xml_read_timestamp(const char *xpath_expression, /* {{{ */
            xpath_expression, xpathObj->nodesetval->nodeNr);
   }
 
-  node = xpathObj->nodesetval->nodeTab[0];
+  xmlNode *node = xpathObj->nodesetval->nodeTab[0];
 
   if (node->xmlChildrenNode == NULL) {
     ERROR("bind plugin: bind_xml_read_timestamp: "
           "node->xmlChildrenNode == NULL");
     xmlXPathFreeObject(xpathObj);
-    return (-1);
+    return -1;
   }
 
-  str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
+  char *str_ptr = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
   if (str_ptr == NULL) {
     ERROR("bind plugin: bind_xml_read_timestamp: xmlNodeListGetString failed.");
     xmlXPathFreeObject(xpathObj);
-    return (-1);
+    return -1;
   }
 
-  tmp = strptime(str_ptr, "%Y-%m-%dT%T", &tm);
+  struct tm tm = {0};
+  char *tmp = strptime(str_ptr, "%Y-%m-%dT%T", &tm);
   xmlFree(str_ptr);
   if (tmp == NULL) {
     ERROR("bind plugin: bind_xml_read_timestamp: strptime failed.");
     xmlXPathFreeObject(xpathObj);
-    return (-1);
+    return -1;
   }
 
-  *ret_value = mktime(&tm);
+#if HAVE_TIMEGM
+  time_t t = timegm(&tm);
+  if (t == ((time_t)-1)) {
+    ERROR("bind plugin: timegm() failed: %s", STRERRNO);
+    return -1;
+  }
+  *ret_value = t;
+#else
+  time_t t = mktime(&tm);
+  if (t == ((time_t)-1)) {
+    ERROR("bind plugin: mktime() failed: %s", STRERRNO);
+    return -1;
+  }
+  /* mktime assumes that tm is local time. Luckily, it also sets timezone to
+   * the offset used for the conversion, and we undo the conversion to convert
+   * back to UTC. */
+  *ret_value = t - timezone;
+#endif
 
   xmlXPathFreeObject(xpathObj);
-  return (0);
+  return 0;
 } /* }}} int bind_xml_read_timestamp */
 
 /*
@@ -449,25 +464,23 @@ static int bind_parse_generic_name_value(const char *xpath_expression, /* {{{ */
                                          void *user_data, xmlDoc *doc,
                                          xmlXPathContext *xpathCtx,
                                          time_t current_time, int ds_type) {
-  xmlXPathObject *xpathObj = NULL;
-  int num_entries;
-
-  xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
+  xmlXPathObject *xpathObj =
+      xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
   if (xpathObj == NULL) {
     ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
           xpath_expression);
-    return (-1);
+    return -1;
   }
 
-  num_entries = 0;
+  int num_entries = 0;
   /* Iterate over all matching nodes. */
   for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr);
        i++) {
+
     xmlNode *name_node = NULL;
     xmlNode *counter = NULL;
-    xmlNode *parent;
 
-    parent = xpathObj->nodesetval->nodeTab[i];
+    xmlNode *parent = xpathObj->nodesetval->nodeTab[i];
     DEBUG("bind plugin: bind_parse_generic_name_value: parent->name = %s;",
           (char *)parent->name);
 
@@ -493,8 +506,10 @@ static int bind_parse_generic_name_value(const char *xpath_expression, /* {{{ */
         status = bind_xml_read_gauge(doc, counter, &value.gauge);
       else
         status = bind_xml_read_derive(doc, counter, &value.derive);
-      if (status != 0)
+      if (status != 0) {
+        xmlFree(name);
         continue;
+      }
 
       status = (*list_callback)(name, value, current_time, user_data);
       if (status == 0)
@@ -509,7 +524,7 @@ static int bind_parse_generic_name_value(const char *xpath_expression, /* {{{ */
 
   xmlXPathFreeObject(xpathObj);
 
-  return (0);
+  return 0;
 } /* }}} int bind_parse_generic_name_value */
 
 /*
@@ -528,32 +543,29 @@ static int bind_parse_generic_value_list(const char *xpath_expression, /* {{{ */
                                          void *user_data, xmlDoc *doc,
                                          xmlXPathContext *xpathCtx,
                                          time_t current_time, int ds_type) {
-  xmlXPathObject *xpathObj = NULL;
-  int num_entries;
-
-  xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
+  xmlXPathObject *xpathObj =
+      xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
   if (xpathObj == NULL) {
     ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
           xpath_expression);
-    return (-1);
+    return -1;
   }
 
-  num_entries = 0;
+  int num_entries = 0;
   /* Iterate over all matching nodes. */
   for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr);
        i++) {
     /* Iterate over all child nodes. */
     for (xmlNode *child = xpathObj->nodesetval->nodeTab[i]->xmlChildrenNode;
          child != NULL; child = child->next) {
-      char *node_name;
-      value_t value;
-      int status;
 
       if (child->type != XML_ELEMENT_NODE)
         continue;
 
-      node_name = (char *)child->name;
+      char *node_name = (char *)child->name;
 
+      value_t value;
+      int status;
       if (ds_type == DS_TYPE_GAUGE)
         status = bind_xml_read_gauge(doc, child, &value.gauge);
       else
@@ -572,7 +584,7 @@ static int bind_parse_generic_value_list(const char *xpath_expression, /* {{{ */
 
   xmlXPathFreeObject(xpathObj);
 
-  return (0);
+  return 0;
 } /* }}} int bind_parse_generic_value_list */
 
 /*
@@ -590,17 +602,16 @@ static int bind_parse_generic_name_attr_value_list(
     const char *xpath_expression, /* {{{ */
     list_callback_t list_callback, void *user_data, xmlDoc *doc,
     xmlXPathContext *xpathCtx, time_t current_time, int ds_type) {
-  xmlXPathObject *xpathObj = NULL;
-  int num_entries;
 
-  xpathObj = xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
+  xmlXPathObject *xpathObj =
+      xmlXPathEvalExpression(BAD_CAST xpath_expression, xpathCtx);
   if (xpathObj == NULL) {
     ERROR("bind plugin: Unable to evaluate XPath expression `%s'.",
           xpath_expression);
-    return (-1);
+    return -1;
   }
 
-  num_entries = 0;
+  int num_entries = 0;
   /* Iterate over all matching nodes. */
   for (int i = 0; xpathObj->nodesetval && (i < xpathObj->nodesetval->nodeNr);
        i++) {
@@ -613,25 +624,29 @@ static int bind_parse_generic_name_attr_value_list(
       if (strncmp("counter", (char *)child->name, strlen("counter")) != 0)
         continue;
 
-      char *attr_name;
-      value_t value;
-      int status;
-
-      attr_name = (char *)xmlGetProp(child, BAD_CAST "name");
+      char *attr_name = (char *)xmlGetProp(child, BAD_CAST "name");
       if (attr_name == NULL) {
         DEBUG("bind plugin: found <counter> without name.");
         continue;
       }
+
+      value_t value;
+      int status;
+
       if (ds_type == DS_TYPE_GAUGE)
         status = bind_xml_read_gauge(doc, child, &value.gauge);
       else
         status = bind_xml_read_derive(doc, child, &value.derive);
-      if (status != 0)
+      if (status != 0) {
+        xmlFree(attr_name);
         continue;
+      }
 
       status = (*list_callback)(attr_name, value, current_time, user_data);
       if (status == 0)
         num_entries++;
+
+      xmlFree(attr_name);
     }
   }
 
@@ -640,15 +655,13 @@ static int bind_parse_generic_name_attr_value_list(
 
   xmlXPathFreeObject(xpathObj);
 
-  return (0);
+  return 0;
 } /* }}} int bind_parse_generic_name_attr_value_list */
 
 static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */
                                       xmlXPathContext *path_ctx, xmlNode *node,
                                       cb_view_t *view, time_t current_time) {
-  xmlXPathObject *path_obj;
   char *zone_name = NULL;
-  size_t j;
 
   if (version >= 3) {
     char *n = (char *)xmlGetProp(node, BAD_CAST "name");
@@ -660,10 +673,11 @@ static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */
     xmlFree(n);
     xmlFree(c);
   } else {
-    path_obj = xmlXPathEvalExpression(BAD_CAST "name", path_ctx);
+    xmlXPathObject *path_obj =
+        xmlXPathEvalExpression(BAD_CAST "name", path_ctx);
     if (path_obj == NULL) {
       ERROR("bind plugin: xmlXPathEvalExpression failed.");
-      return (-1);
+      return -1;
     }
 
     for (int i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr);
@@ -678,19 +692,19 @@ static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */
 
   if (zone_name == NULL) {
     ERROR("bind plugin: Could not determine zone name.");
-    return (-1);
+    return -1;
   }
 
+  size_t j;
   for (j = 0; j < view->zones_num; j++) {
     if (strcasecmp(zone_name, view->zones[j]) == 0)
       break;
   }
 
   xmlFree(zone_name);
-  zone_name = NULL;
 
   if (j >= view->zones_num)
-    return (0);
+    return 0;
 
   zone_name = view->zones[j];
 
@@ -702,8 +716,8 @@ static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */
                                          nsstats_translation_table_length,
                                          plugin_instance};
 
-    ssnprintf(plugin_instance, sizeof(plugin_instance), "%s-zone-%s",
-              view->name, zone_name);
+    snprintf(plugin_instance, sizeof(plugin_instance), "%s-zone-%s", view->name,
+             zone_name);
 
     if (version == 3) {
       list_info_ptr_t list_info = {plugin_instance,
@@ -726,26 +740,24 @@ static int bind_xml_stats_handle_zone(int version, xmlDoc *doc, /* {{{ */
     }
   } /* }}} */
 
-  return (0);
+  return 0;
 } /* }}} int bind_xml_stats_handle_zone */
 
 static int bind_xml_stats_search_zones(int version, xmlDoc *doc, /* {{{ */
                                        xmlXPathContext *path_ctx, xmlNode *node,
                                        cb_view_t *view, time_t current_time) {
-  xmlXPathObject *zone_nodes = NULL;
-  xmlXPathContext *zone_path_context;
-
-  zone_path_context = xmlXPathNewContext(doc);
+  xmlXPathContext *zone_path_context = xmlXPathNewContext(doc);
   if (zone_path_context == NULL) {
     ERROR("bind plugin: xmlXPathNewContext failed.");
-    return (-1);
+    return -1;
   }
 
-  zone_nodes = xmlXPathEvalExpression(BAD_CAST "zones/zone", path_ctx);
+  xmlXPathObject *zone_nodes =
+      xmlXPathEvalExpression(BAD_CAST "zones/zone", path_ctx);
   if (zone_nodes == NULL) {
     ERROR("bind plugin: Cannot find any <view> tags.");
     xmlXPathFreeContext(zone_path_context);
-    return (-1);
+    return -1;
   }
 
   for (int i = 0; i < zone_nodes->nodesetval->nodeNr; i++) {
@@ -760,7 +772,7 @@ static int bind_xml_stats_search_zones(int version, xmlDoc *doc, /* {{{ */
 
   xmlXPathFreeObject(zone_nodes);
   xmlXPathFreeContext(zone_path_context);
-  return (0);
+  return 0;
 } /* }}} int bind_xml_stats_search_zones */
 
 static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
@@ -775,7 +787,7 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
 
     if (view_name == NULL) {
       ERROR("bind plugin: Could not determine view name.");
-      return (-1);
+      return -1;
     }
 
     for (j = 0; j < views_num; j++) {
@@ -786,11 +798,11 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
     xmlFree(view_name);
     view_name = NULL;
   } else {
-    xmlXPathObject *path_obj;
-    path_obj = xmlXPathEvalExpression(BAD_CAST "name", path_ctx);
+    xmlXPathObject *path_obj =
+        xmlXPathEvalExpression(BAD_CAST "name", path_ctx);
     if (path_obj == NULL) {
       ERROR("bind plugin: xmlXPathEvalExpression failed.");
-      return (-1);
+      return -1;
     }
 
     for (int i = 0; path_obj->nodesetval && (i < path_obj->nodesetval->nodeNr);
@@ -804,7 +816,7 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
     if (view_name == NULL) {
       ERROR("bind plugin: Could not determine view name.");
       xmlXPathFreeObject(path_obj);
-      return (-1);
+      return -1;
     }
 
     for (j = 0; j < views_num; j++) {
@@ -820,7 +832,7 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
   }
 
   if (j >= views_num)
-    return (0);
+    return 0;
 
   view = views + j;
 
@@ -833,8 +845,7 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
     list_info_ptr_t list_info = {plugin_instance,
                                  /* type = */ "dns_qtype"};
 
-    ssnprintf(plugin_instance, sizeof(plugin_instance), "%s-qtypes",
-              view->name);
+    snprintf(plugin_instance, sizeof(plugin_instance), "%s-qtypes", view->name);
     if (version == 3) {
       bind_parse_generic_name_attr_value_list(
           /* xpath = */ "counters[@type='resqtype']",
@@ -856,8 +867,8 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
                                          resstats_translation_table_length,
                                          plugin_instance};
 
-    ssnprintf(plugin_instance, sizeof(plugin_instance), "%s-resolver_stats",
-              view->name);
+    snprintf(plugin_instance, sizeof(plugin_instance), "%s-resolver_stats",
+             view->name);
     if (version == 3) {
       bind_parse_generic_name_attr_value_list(
           "counters[@type='resstats']",
@@ -879,8 +890,8 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
     list_info_ptr_t list_info = {plugin_instance,
                                  /* type = */ "dns_qtype_cached"};
 
-    ssnprintf(plugin_instance, sizeof(plugin_instance), "%s-cache_rr_sets",
-              view->name);
+    snprintf(plugin_instance, sizeof(plugin_instance), "%s-cache_rr_sets",
+             view->name);
 
     bind_parse_generic_name_value(/* xpath = */ "cache/rrset",
                                   /* callback = */ bind_xml_list_callback,
@@ -892,33 +903,29 @@ static int bind_xml_stats_handle_view(int version, xmlDoc *doc, /* {{{ */
     bind_xml_stats_search_zones(version, doc, path_ctx, node, view,
                                 current_time);
 
-  return (0);
+  return 0;
 } /* }}} int bind_xml_stats_handle_view */
 
 static int bind_xml_stats_search_views(int version, xmlDoc *doc, /* {{{ */
                                        xmlXPathContext *xpathCtx,
                                        xmlNode *statsnode,
                                        time_t current_time) {
-  xmlXPathObject *view_nodes = NULL;
-  xmlXPathContext *view_path_context;
-
-  view_path_context = xmlXPathNewContext(doc);
+  xmlXPathContext *view_path_context = xmlXPathNewContext(doc);
   if (view_path_context == NULL) {
     ERROR("bind plugin: xmlXPathNewContext failed.");
-    return (-1);
+    return -1;
   }
 
-  view_nodes = xmlXPathEvalExpression(BAD_CAST "views/view", xpathCtx);
+  xmlXPathObject *view_nodes =
+      xmlXPathEvalExpression(BAD_CAST "views/view", xpathCtx);
   if (view_nodes == NULL) {
     ERROR("bind plugin: Cannot find any <view> tags.");
     xmlXPathFreeContext(view_path_context);
-    return (-1);
+    return -1;
   }
 
   for (int i = 0; i < view_nodes->nodesetval->nodeNr; i++) {
-    xmlNode *node;
-
-    node = view_nodes->nodesetval->nodeTab[i];
+    xmlNode *node = view_nodes->nodesetval->nodeTab[i];
     assert(node != NULL);
 
     view_path_context->node = node;
@@ -929,7 +936,7 @@ static int bind_xml_stats_search_views(int version, xmlDoc *doc, /* {{{ */
 
   xmlXPathFreeObject(view_nodes);
   xmlXPathFreeContext(view_path_context);
-  return (0);
+  return 0;
 } /* }}} int bind_xml_stats_search_views */
 
 static void bind_xml_stats_v3(xmlDoc *doc, /* {{{ */
@@ -1222,17 +1229,16 @@ static void bind_xml_stats_v1_v2(int version, xmlDoc *doc, /* {{{ */
 static int bind_xml_stats(int version, xmlDoc *doc, /* {{{ */
                           xmlXPathContext *xpathCtx, xmlNode *statsnode) {
   time_t current_time = 0;
-  int status;
 
   xpathCtx->node = statsnode;
 
   /* TODO: Check `server/boot-time' to recognize server restarts. */
 
-  status = bind_xml_read_timestamp("server/current-time", doc, xpathCtx,
-                                   &current_time);
+  int status = bind_xml_read_timestamp("server/current-time", doc, xpathCtx,
+                                       &current_time);
   if (status != 0) {
     ERROR("bind plugin: Reading `server/current-time' failed.");
-    return (-1);
+    return -1;
   }
   DEBUG("bind plugin: Current server time is %i.", (int)current_time);
 
@@ -1273,29 +1279,27 @@ static int bind_xml_stats(int version, xmlDoc *doc, /* {{{ */
 
 static int bind_xml(const char *data) /* {{{ */
 {
-  xmlDoc *doc = NULL;
-  xmlXPathContext *xpathCtx = NULL;
-  xmlXPathObject *xpathObj = NULL;
   int ret = -1;
 
-  doc = xmlParseMemory(data, strlen(data));
+  xmlDoc *doc = xmlParseMemory(data, strlen(data));
   if (doc == NULL) {
     ERROR("bind plugin: xmlParseMemory failed.");
-    return (-1);
+    return -1;
   }
 
-  xpathCtx = xmlXPathNewContext(doc);
+  xmlXPathContext *xpathCtx = xmlXPathNewContext(doc);
   if (xpathCtx == NULL) {
     ERROR("bind plugin: xmlXPathNewContext failed.");
     xmlFreeDoc(doc);
-    return (-1);
+    return -1;
   }
 
   //
   // version 3.* of statistics XML (since BIND9.9)
   //
 
-  xpathObj = xmlXPathEvalExpression(BAD_CAST "/statistics", xpathCtx);
+  xmlXPathObject *xpathObj =
+      xmlXPathEvalExpression(BAD_CAST "/statistics", xpathCtx);
   if (xpathObj == NULL || xpathObj->nodesetval == NULL ||
       xpathObj->nodesetval->nodeNr == 0) {
     DEBUG("bind plugin: Statistics appears not to be v3");
@@ -1340,7 +1344,7 @@ static int bind_xml(const char *data) /* {{{ */
     xmlXPathFreeContext(xpathCtx);
     xmlFreeDoc(doc);
 
-    return (ret);
+    return ret;
   }
 
   //
@@ -1352,13 +1356,13 @@ static int bind_xml(const char *data) /* {{{ */
     ERROR("bind plugin: Cannot find the <statistics> tag.");
     xmlXPathFreeContext(xpathCtx);
     xmlFreeDoc(doc);
-    return (-1);
+    return -1;
   } else if (xpathObj->nodesetval == NULL) {
     ERROR("bind plugin: xmlXPathEvalExpression failed.");
     xmlXPathFreeObject(xpathObj);
     xmlXPathFreeContext(xpathCtx);
     xmlFreeDoc(doc);
-    return (-1);
+    return -1;
   }
 
   for (int i = 0; i < xpathObj->nodesetval->nodeNr; i++) {
@@ -1406,7 +1410,7 @@ static int bind_xml(const char *data) /* {{{ */
   xmlXPathFreeContext(xpathCtx);
   xmlFreeDoc(doc);
 
-  return (ret);
+  return ret;
 } /* }}} int bind_xml */
 
 static int bind_config_set_bool(const char *name, int *var, /* {{{ */
@@ -1415,7 +1419,7 @@ static int bind_config_set_bool(const char *name, int *var, /* {{{ */
     WARNING("bind plugin: The `%s' option needs "
             "exactly one boolean argument.",
             name);
-    return (-1);
+    return -1;
   }
 
   if (ci->values[0].value.boolean)
@@ -1427,44 +1431,40 @@ static int bind_config_set_bool(const char *name, int *var, /* {{{ */
 
 static int bind_config_add_view_zone(cb_view_t *view, /* {{{ */
                                      oconfig_item_t *ci) {
-  char **tmp;
-
   if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
     WARNING("bind plugin: The `Zone' option needs "
             "exactly one string argument.");
-    return (-1);
+    return -1;
   }
 
-  tmp = realloc(view->zones, sizeof(char *) * (view->zones_num + 1));
+  char **tmp = realloc(view->zones, sizeof(char *) * (view->zones_num + 1));
   if (tmp == NULL) {
     ERROR("bind plugin: realloc failed.");
-    return (-1);
+    return -1;
   }
   view->zones = tmp;
 
   view->zones[view->zones_num] = strdup(ci->values[0].value.string);
   if (view->zones[view->zones_num] == NULL) {
     ERROR("bind plugin: strdup failed.");
-    return (-1);
+    return -1;
   }
   view->zones_num++;
 
-  return (0);
+  return 0;
 } /* }}} int bind_config_add_view_zone */
 
 static int bind_config_add_view(oconfig_item_t *ci) /* {{{ */
 {
-  cb_view_t *tmp;
-
   if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
     WARNING("bind plugin: `View' blocks need exactly one string argument.");
-    return (-1);
+    return -1;
   }
 
-  tmp = realloc(views, sizeof(*views) * (views_num + 1));
+  cb_view_t *tmp = realloc(views, sizeof(*views) * (views_num + 1));
   if (tmp == NULL) {
     ERROR("bind plugin: realloc failed.");
-    return (-1);
+    return -1;
   }
   views = tmp;
   tmp = views + views_num;
@@ -1480,7 +1480,7 @@ static int bind_config_add_view(oconfig_item_t *ci) /* {{{ */
   if (tmp->name == NULL) {
     ERROR("bind plugin: strdup failed.");
     sfree(views);
-    return (-1);
+    return -1;
   }
 
   for (int i = 0; i < ci->children_num; i++) {
@@ -1502,7 +1502,7 @@ static int bind_config_add_view(oconfig_item_t *ci) /* {{{ */
   } /* for (i = 0; i < ci->children_num; i++) */
 
   views_num++;
-  return (0);
+  return 0;
 } /* }}} int bind_config_add_view */
 
 static int bind_config(oconfig_item_t *ci) /* {{{ */
@@ -1515,7 +1515,7 @@ static int bind_config(oconfig_item_t *ci) /* {{{ */
           (child->values[0].type != OCONFIG_TYPE_STRING)) {
         WARNING("bind plugin: The `Url' option needs "
                 "exactly one string argument.");
-        return (-1);
+        return -1;
       }
 
       sfree(url);
@@ -1545,25 +1545,24 @@ static int bind_config(oconfig_item_t *ci) /* {{{ */
     }
   }
 
-  return (0);
+  return 0;
 } /* }}} int bind_config */
 
 static int bind_init(void) /* {{{ */
 {
   if (curl != NULL)
-    return (0);
+    return 0;
 
   curl = curl_easy_init();
   if (curl == NULL) {
     ERROR("bind plugin: bind_init: curl_easy_init failed.");
-    return (-1);
+    return -1;
   }
 
   curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
   curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, bind_curl_callback);
   curl_easy_setopt(curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
   curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, bind_curl_error);
-  curl_easy_setopt(curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
   curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
   curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 50L);
 #ifdef HAVE_CURLOPT_TIMEOUT_MS
@@ -1572,29 +1571,30 @@ static int bind_init(void) /* {{{ */
                                                         plugin_get_interval()));
 #endif
 
-  return (0);
+  return 0;
 } /* }}} int bind_init */
 
 static int bind_read(void) /* {{{ */
 {
-  int status;
-
   if (curl == NULL) {
     ERROR("bind plugin: I don't have a CURL object.");
-    return (-1);
+    return -1;
   }
 
   bind_buffer_fill = 0;
+
+  curl_easy_setopt(curl, CURLOPT_URL, (url != NULL) ? url : BIND_DEFAULT_URL);
+
   if (curl_easy_perform(curl) != CURLE_OK) {
     ERROR("bind plugin: curl_easy_perform failed: %s", bind_curl_error);
-    return (-1);
+    return -1;
   }
 
-  status = bind_xml(bind_buffer);
+  int status = bind_xml(bind_buffer);
   if (status != 0)
-    return (-1);
+    return -1;
   else
-    return (0);
+    return 0;
 } /* }}} int bind_read */
 
 static int bind_shutdown(void) /* {{{ */
@@ -1604,7 +1604,7 @@ static int bind_shutdown(void) /* {{{ */
     curl = NULL;
   }
 
-  return (0);
+  return 0;
 } /* }}} int bind_shutdown */
 
 void module_register(void) {