/**
* collectd - src/iptables.c
- * Copyright (C) 2007 Sjoerd van der Berg
+ * Copyright (C) 2007 Sjoerd van der Berg
+ * Copyright (C) 2007-2010 Florian octo Forster
+ * Copyright (C) 2009 Marco Chiappero
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Sjoerd van der Berg <harekiet at users.sourceforge.net>
+ * Florian Forster <octo at collectd.org>
+ * Marco Chiappero <marco at absence.it>
**/
#include "collectd.h"
#include "plugin.h"
#include "configfile.h"
+#include <sys/socket.h>
+
#if OWN_LIBIPTC
-# include "libiptc/libiptc.h"
-#else
+# include "owniptc/libiptc.h"
+# include "owniptc/libip6tc.h"
+
+# define HAVE_IPTC_HANDLE_T 1
+# define HAVE_IP6TC_HANDLE_T 1
+
+#else /* if !OWN_LIBIPTC */
# include <libiptc/libiptc.h>
-#endif
+# include <libiptc/libip6tc.h>
+
+/*
+ * iptc_handle_t was available before libiptc was officially available as a
+ * shared library. Note, that when the shared lib was introduced, the API and
+ * ABI have changed slightly:
+ * 'iptc_handle_t' used to be 'struct iptc_handle *' and most functions used
+ * 'iptc_handle_t *' as an argument. Now, most functions use 'struct
+ * iptc_handle *' (thus removing one level of pointer indirection).
+ *
+ * HAVE_IPTC_HANDLE_T is used to determine which API ought to be used. While
+ * this is somewhat hacky, I didn't find better way to solve that :-/
+ * -tokkee
+ */
+# ifndef HAVE_IPTC_HANDLE_T
+typedef struct iptc_handle iptc_handle_t;
+# endif
+# ifndef HAVE_IP6TC_HANDLE_T
+typedef struct ip6tc_handle ip6tc_handle_t;
+# endif
+#endif /* !OWN_LIBIPTC */
/*
* (Module-)Global variables
static const char *config_keys[] =
{
"Chain",
- NULL
+ "Chain6"
};
-static int config_keys_num = 1;
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
/*
Each table/chain combo that will be queried goes into this list
*/
+
+enum protocol_version_e
+{
+ IPV4,
+ IPV6
+};
+typedef enum protocol_version_e protocol_version_t;
+
#ifndef XT_TABLE_MAXNAMELEN
# define XT_TABLE_MAXNAMELEN 32
#endif
typedef struct {
+ protocol_version_t ip_version;
char table[XT_TABLE_MAXNAMELEN];
char chain[XT_TABLE_MAXNAMELEN];
union
static int iptables_config (const char *key, const char *value)
{
+ /* int ip_value; */
+ protocol_version_t ip_version = 0;
+
if (strcasecmp (key, "Chain") == 0)
+ ip_version = IPV4;
+ else if (strcasecmp (key, "Chain6") == 0)
+ ip_version = IPV6;
+
+ if (( ip_version == IPV4 ) || ( ip_version == IPV6 ))
{
ip_chain_t temp, *final, **list;
char *table;
return (1);
}
+ /*
+ * Time to fill the temp element
+ * Examine value string, it should look like:
+ * Chain[6] <table> <chain> [<comment|num> [name]]
+ */
+
+ /* set IPv4 or IPv6 */
+ temp.ip_version = ip_version;
+
/* Chain <table> <chain> [<comment|num> [name]] */
fields_num = strsplit (value_copy, fields, 4);
if (fields_num < 2)
table = fields[0];
chain = fields[1];
- table_len = strlen (table);
- if ((unsigned int)table_len >= sizeof(temp.table))
+ table_len = strlen (table) + 1;
+ if ((unsigned int)table_len > sizeof(temp.table))
{
ERROR ("Table `%s' too long.", table);
free (value_copy);
}
sstrncpy (temp.table, table, table_len);
- chain_len = strlen (chain);
- if ((unsigned int)chain_len >= sizeof(temp.chain))
+ chain_len = strlen (chain) + 1;
+ if ((unsigned int)chain_len > sizeof(temp.chain))
{
ERROR ("Chain `%s' too long.", chain);
free (value_copy);
return (0);
} /* int iptables_config */
+static int submit6_match (const struct ip6t_entry_match *match,
+ const struct ip6t_entry *entry,
+ const ip_chain_t *chain,
+ int rule_num)
+{
+ int status;
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ /* Select the rules to collect */
+ if (chain->rule_type == RTYPE_NUM)
+ {
+ if (chain->rule.num != rule_num)
+ return (0);
+ }
+ else
+ {
+ if (strcmp (match->u.user.name, "comment") != 0)
+ return (0);
+ if ((chain->rule_type == RTYPE_COMMENT)
+ && (strcmp (chain->rule.comment, (char *) match->data) != 0))
+ return (0);
+ }
+
+ vl.values = values;
+ vl.values_len = 1;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "ip6tables", sizeof (vl.plugin));
+
+ status = ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
+ "%s-%s", chain->table, chain->chain);
+ if ((status < 1) || ((unsigned int)status >= sizeof (vl.plugin_instance)))
+ return (0);
+
+ if (chain->name[0] != '\0')
+ {
+ sstrncpy (vl.type_instance, chain->name, sizeof (vl.type_instance));
+ }
+ else
+ {
+ if (chain->rule_type == RTYPE_NUM)
+ ssnprintf (vl.type_instance, sizeof (vl.type_instance),
+ "%i", chain->rule.num);
+ else
+ sstrncpy (vl.type_instance, (char *) match->data,
+ sizeof (vl.type_instance));
+ }
+
+ sstrncpy (vl.type, "ipt_bytes", sizeof (vl.type));
+ values[0].derive = (derive_t) entry->counters.bcnt;
+ plugin_dispatch_values (&vl);
+
+ sstrncpy (vl.type, "ipt_packets", sizeof (vl.type));
+ values[0].derive = (derive_t) entry->counters.pcnt;
+ plugin_dispatch_values (&vl);
+
+ return (0);
+} /* int submit_match */
+
+
/* This needs to return `int' for IPT_MATCH_ITERATE to work. */
static int submit_match (const struct ipt_entry_match *match,
const struct ipt_entry *entry,
vl.values = values;
vl.values_len = 1;
- vl.time = time (NULL);
- strcpy (vl.host, hostname_g);
- strcpy (vl.plugin, "iptables");
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "iptables", sizeof (vl.plugin));
status = ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
"%s-%s", chain->table, chain->chain);
sizeof (vl.type_instance));
}
- strcpy (vl.type, "ipt_bytes");
- values[0].counter = (counter_t) entry->counters.bcnt;
+ sstrncpy (vl.type, "ipt_bytes", sizeof (vl.type));
+ values[0].derive = (derive_t) entry->counters.bcnt;
plugin_dispatch_values (&vl);
- strcpy (vl.type, "ipt_packets");
- values[0].counter = (counter_t) entry->counters.pcnt;
+ sstrncpy (vl.type, "ipt_packets", sizeof (vl.type));
+ values[0].derive = (derive_t) entry->counters.pcnt;
plugin_dispatch_values (&vl);
return (0);
-} /* void submit_match */
+} /* int submit_match */
-static void submit_chain( iptc_handle_t *handle, ip_chain_t *chain ) {
+
+/* ipv6 submit_chain */
+static void submit6_chain( ip6tc_handle_t *handle, ip_chain_t *chain )
+{
+ const struct ip6t_entry *entry;
+ int rule_num;
+
+ /* Find first rule for chain and use the iterate macro */
+ entry = ip6tc_first_rule( chain->chain, handle );
+ if (entry == NULL)
+ {
+ DEBUG ("ip6tc_first_rule failed: %s", ip6tc_strerror (errno));
+ return;
+ }
+
+ rule_num = 1;
+ while (entry)
+ {
+ if (chain->rule_type == RTYPE_NUM)
+ {
+ submit6_match (NULL, entry, chain, rule_num);
+ }
+ else
+ {
+ IP6T_MATCH_ITERATE( entry, submit6_match, entry, chain, rule_num );
+ }
+
+ entry = ip6tc_next_rule( entry, handle );
+ rule_num++;
+ } /* while (entry) */
+}
+
+
+/* ipv4 submit_chain */
+static void submit_chain( iptc_handle_t *handle, ip_chain_t *chain )
+{
const struct ipt_entry *entry;
int rule_num;
{
int i;
int num_failures = 0;
+ ip_chain_t *chain;
/* Init the iptc handle structure and query the correct table */
for (i = 0; i < chain_num; i++)
{
- iptc_handle_t handle;
- ip_chain_t *chain;
-
chain = chain_list[i];
+
if (!chain)
{
DEBUG ("iptables plugin: chain == NULL");
continue;
}
- handle = iptc_init (chain->table);
- if (!handle)
- {
- ERROR ("iptables plugin: iptc_init (%s) failed: %s",
- chain->table, iptc_strerror (errno));
- num_failures++;
- continue;
- }
+ if ( chain->ip_version == IPV4 )
+ {
+#ifdef HAVE_IPTC_HANDLE_T
+ iptc_handle_t _handle;
+ iptc_handle_t *handle = &_handle;
+
+ *handle = iptc_init (chain->table);
+#else
+ iptc_handle_t *handle;
+ handle = iptc_init (chain->table);
+#endif
+
+ if (!handle)
+ {
+ ERROR ("iptables plugin: iptc_init (%s) failed: %s",
+ chain->table, iptc_strerror (errno));
+ num_failures++;
+ continue;
+ }
+
+ submit_chain (handle, chain);
+ iptc_free (handle);
+ }
+ else if ( chain->ip_version == IPV6 )
+ {
+#ifdef HAVE_IP6TC_HANDLE_T
+ ip6tc_handle_t _handle;
+ ip6tc_handle_t *handle = &_handle;
+
+ *handle = ip6tc_init (chain->table);
+#else
+ ip6tc_handle_t *handle;
+ handle = ip6tc_init (chain->table);
+#endif
+
+ if (!handle)
+ {
+ ERROR ("iptables plugin: ip6tc_init (%s) failed: %s",
+ chain->table, ip6tc_strerror (errno));
+ num_failures++;
+ continue;
+ }
+
+ submit6_chain (handle, chain);
+ ip6tc_free (handle);
+ }
+ else num_failures++;
- submit_chain (&handle, chain);
- iptc_free (&handle);
} /* for (i = 0 .. chain_num) */
return ((num_failures < chain_num) ? 0 : -1);
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