#include "plugin.h"
#if !KERNEL_LINUX
-# error "No applicable input method."
+#error "No applicable input method."
#endif
#define CONNTRACK_FILE "/proc/sys/net/netfilter/nf_conntrack_count"
#define CONNTRACK_FILE_OLD "/proc/sys/net/ipv4/netfilter/ip_conntrack_count"
#define CONNTRACK_MAX_FILE_OLD "/proc/sys/net/ipv4/netfilter/ip_conntrack_max"
-static const char *config_keys[] =
-{
- "OldFiles"
-};
-static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+static const char *config_keys[] = {"OldFiles"};
+static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
/*
Each table/chain combo that will be queried goes into this list
*/
static int old_files = 0;
-static int conntrack_config(const char *key, const char *value)
-{
- if (strcmp(key, "OldFiles") == 0)
- old_files = 1;
+static int conntrack_config(const char *key, const char *value) {
+ if (strcmp(key, "OldFiles") == 0)
+ old_files = 1;
- return 0;
+ return 0;
}
-static void conntrack_submit (const char *type, const char *type_instance,
- value_t conntrack)
-{
- value_list_t vl = VALUE_LIST_INIT;
-
- vl.values = &conntrack;
- vl.values_len = 1;
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, "conntrack", sizeof (vl.plugin));
- sstrncpy (vl.type, type, sizeof (vl.type));
- if (type_instance != NULL)
- sstrncpy (vl.type_instance, type_instance,
- sizeof (vl.type_instance));
-
- plugin_dispatch_values (&vl);
+static void conntrack_submit(const char *type, const char *type_instance,
+ value_t conntrack) {
+ value_list_t vl = VALUE_LIST_INIT;
+
+ vl.values = &conntrack;
+ vl.values_len = 1;
+ sstrncpy(vl.plugin, "conntrack", sizeof(vl.plugin));
+ sstrncpy(vl.type, type, sizeof(vl.type));
+ if (type_instance != NULL)
+ sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
+
+ plugin_dispatch_values(&vl);
} /* static void conntrack_submit */
-static int conntrack_read (void)
-{
- value_t conntrack, conntrack_max, conntrack_pct;
- FILE *fh;
- char buffer[64] = { 0 };
- size_t buffer_len;
-
- fh = fopen (old_files?CONNTRACK_FILE_OLD:CONNTRACK_FILE, "r");
- if (fh == NULL)
- return (-1);
-
- if (fgets (buffer, sizeof (buffer), fh) == NULL)
- {
- fclose (fh);
- return (-1);
- }
- fclose (fh);
-
- /* strip trailing newline. */
- buffer_len = strlen (buffer);
- while ((buffer_len > 0) && isspace ((int) buffer[buffer_len - 1]))
- {
- buffer[buffer_len - 1] = 0;
- buffer_len--;
- }
-
- if (parse_value (buffer, &conntrack, DS_TYPE_GAUGE) != 0)
- return (-1);
-
- conntrack_submit ("conntrack", NULL, conntrack);
-
- fh = fopen (old_files?CONNTRACK_MAX_FILE_OLD:CONNTRACK_MAX_FILE, "r");
- if (fh == NULL)
- return (-1);
-
- memset (buffer, 0, sizeof (buffer));
- if (fgets (buffer, sizeof (buffer), fh) == NULL)
- {
- fclose (fh);
- return (-1);
- }
- fclose (fh);
-
- /* strip trailing newline. */
- buffer_len = strlen (buffer);
- while ((buffer_len > 0) && isspace ((int) buffer[buffer_len - 1]))
- {
- buffer[buffer_len - 1] = 0;
- buffer_len--;
- }
-
- if (parse_value (buffer, &conntrack_max, DS_TYPE_GAUGE) != 0)
- return (-1);
-
- conntrack_submit ("conntrack", "max", conntrack_max);
- conntrack_pct.gauge = (conntrack.gauge / conntrack_max.gauge) * 100;
- conntrack_submit ("percent", "used", conntrack_pct);
-
-
- return (0);
+static int conntrack_read(void) {
+ value_t conntrack, conntrack_max, conntrack_pct;
+
+ char const *path = old_files ? CONNTRACK_FILE_OLD : CONNTRACK_FILE;
+ if (parse_value_file(path, &conntrack, DS_TYPE_GAUGE) != 0) {
+ ERROR("conntrack plugin: Reading \"%s\" failed.", path);
+ return (-1);
+ }
+
+ path = old_files ? CONNTRACK_MAX_FILE_OLD : CONNTRACK_MAX_FILE;
+ if (parse_value_file(path, &conntrack_max, DS_TYPE_GAUGE) != 0) {
+ ERROR("conntrack plugin: Reading \"%s\" failed.", path);
+ return (-1);
+ }
+
+ conntrack_pct.gauge = (conntrack.gauge / conntrack_max.gauge) * 100;
+
+ conntrack_submit("conntrack", NULL, conntrack);
+ conntrack_submit("conntrack", "max", conntrack_max);
+ conntrack_submit("percent", "used", conntrack_pct);
+
+ return (0);
} /* static int conntrack_read */
-void module_register (void)
-{
- plugin_register_config ("conntrack", conntrack_config,
- config_keys, config_keys_num);
- plugin_register_read ("conntrack", conntrack_read);
+void module_register(void) {
+ plugin_register_config("conntrack", conntrack_config, config_keys,
+ config_keys_num);
+ plugin_register_read("conntrack", conntrack_read);
} /* void module_register */