tail plugin: Fix memory leak.

[collectd.git] / src / tail.c

diff --git a/src/tail.c b/src/tail.c
index 8becc05..72d97a3 100644 (file)
--- a/src/tail.c
+++ b/src/tail.c
@@ -30,6 +30,7 @@
  *     Instance "exim"
  *     <Match>
  *       Regex "S=([1-9][0-9]*)"
+ *       ExcludeRegex "U=root.*S="
  *       DSType "CounterAdd"
  *       Type "ipt_bytes"
  *       Instance "total"
@@ -41,6 +42,7 @@
 struct ctail_config_match_s
 {
   char *regex;
+  char *excluderegex;
   int flags;
   char *type;
   char *type_instance;
@@ -50,22 +52,6 @@ typedef struct ctail_config_match_s ctail_config_match_t;
 cu_tail_match_t **tail_match_list = NULL;
 size_t tail_match_list_num = 0;
 
-static int ctail_config_add_string (const char *name, char **dest, oconfig_item_t *ci)
-{
-  if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
-  {
-    WARNING ("tail plugin: `%s' needs exactly one string argument.", name);
-    return (-1);
-  }
-
-  sfree (*dest);
-  *dest = strdup (ci->values[0].value.string);
-  if (*dest == NULL)
-    return (-1);
-
-  return (0);
-} /* int ctail_config_add_string */
-
 static int ctail_config_add_match_dstype (ctail_config_match_t *cm,
     oconfig_item_t *ci)
 {
@@ -156,13 +142,15 @@ static int ctail_config_add_match (cu_tail_match_t *tm,
     oconfig_item_t *option = ci->children + i;
 
     if (strcasecmp ("Regex", option->key) == 0)
-      status = ctail_config_add_string ("Regex", &cm.regex, option);
+      status = cf_util_get_string (option, &cm.regex);
+    else if (strcasecmp ("ExcludeRegex", option->key) == 0)
+      status = cf_util_get_string (option, &cm.excluderegex);
     else if (strcasecmp ("DSType", option->key) == 0)
       status = ctail_config_add_match_dstype (&cm, option);
     else if (strcasecmp ("Type", option->key) == 0)
-      status = ctail_config_add_string ("Type", &cm.type, option);
+      status = cf_util_get_string (option, &cm.type);
     else if (strcasecmp ("Instance", option->key) == 0)
-      status = ctail_config_add_string ("Instance", &cm.type_instance, option);
+      status = cf_util_get_string (option, &cm.type_instance);
     else
     {
       WARNING ("tail plugin: Option `%s' not allowed here.", option->key);
@@ -201,8 +189,8 @@ static int ctail_config_add_match (cu_tail_match_t *tm,
 
   if (status == 0)
   {
-    status = tail_match_add_match_simple (tm, cm.regex, cm.flags,
-       "tail", plugin_instance, cm.type, cm.type_instance);
+    status = tail_match_add_match_simple (tm, cm.regex, cm.excluderegex,
+       cm.flags, "tail", plugin_instance, cm.type, cm.type_instance);
 
     if (status != 0)
     {
@@ -211,6 +199,7 @@ static int ctail_config_add_match (cu_tail_match_t *tm,
   }
 
   sfree (cm.regex);
+  sfree (cm.excluderegex);
   sfree (cm.type);
   sfree (cm.type_instance);
 
@@ -222,7 +211,6 @@ static int ctail_config_add_file (oconfig_item_t *ci)
   cu_tail_match_t *tm;
   char *plugin_instance = NULL;
   int num_matches = 0;
-  int status;
   int i;
 
   if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
@@ -235,25 +223,25 @@ static int ctail_config_add_file (oconfig_item_t *ci)
   if (tm == NULL)
   {
     ERROR ("tail plugin: tail_match_create (%s) failed.",
-       ci->values[0].value.string);
+        ci->values[0].value.string);
     return (-1);
   }
 
-  status = 0;
   for (i = 0; i < ci->children_num; i++)
   {
     oconfig_item_t *option = ci->children + i;
+    int status;
 
     if (strcasecmp ("Match", option->key) == 0)
     {
       status = ctail_config_add_match (tm, plugin_instance, option);
       if (status == 0)
-       num_matches++;
+        num_matches++;
       /* Be mild with failed matches.. */
       status = 0;
     }
     else if (strcasecmp ("Instance", option->key) == 0)
-      status = ctail_config_add_string ("Instance", &plugin_instance, option);
+      status = cf_util_get_string (option, &plugin_instance);
     else
     {
       WARNING ("tail plugin: Option `%s' not allowed here.", option->key);
@@ -264,10 +252,12 @@ static int ctail_config_add_file (oconfig_item_t *ci)
       break;
   } /* for (i = 0; i < ci->children_num; i++) */
 
+  sfree (plugin_instance);
+
   if (num_matches == 0)
   {
     ERROR ("tail plugin: No (valid) matches found for file `%s'.",
-       ci->values[0].value.string);
+        ci->values[0].value.string);
     tail_match_destroy (tm);
     return (-1);
   }
@@ -276,7 +266,7 @@ static int ctail_config_add_file (oconfig_item_t *ci)
     cu_tail_match_t **temp;
 
     temp = (cu_tail_match_t **) realloc (tail_match_list,
-       sizeof (cu_tail_match_t *) * (tail_match_list_num + 1));
+        sizeof (cu_tail_match_t *) * (tail_match_list_num + 1));
     if (temp == NULL)
     {
       ERROR ("tail plugin: realloc failed.");