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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "log.h"
#include "appconfig.h"
#include "procfile.h"
#include "rrd.h"
#include "plugin_proc.h"
#define RRD_TYPE_NET_STAT_CONNTRACK "netfilter"
#define RRD_TYPE_NET_STAT_CONNTRACK_LEN strlen(RRD_TYPE_NET_STAT_CONNTRACK)
int do_proc_net_stat_conntrack(int update_every, unsigned long long dt) {
static procfile *ff = NULL;
static int do_sockets = -1, do_new = -1, do_changes = -1, do_expect = -1, do_search = -1, do_errors = -1;
if(do_sockets == -1) do_sockets = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connections", 1);
if(do_new == -1) do_new = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter new connections", 1);
if(do_changes == -1) do_changes = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection changes", 1);
if(do_expect == -1) do_expect = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection expectations", 1);
if(do_search == -1) do_search = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection searches", 1);
if(do_errors == -1) do_errors = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter errors", 1);
if(dt) {};
if(!ff) {
char filename[FILENAME_MAX + 1];
snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/stat/nf_conntrack");
ff = procfile_open(config_get("plugin:proc:/proc/net/stat/nf_conntrack", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
}
if(!ff) return 1;
ff = procfile_readall(ff);
if(!ff) return 0; // we return 0, so that we will retry to open it next time
uint32_t lines = procfile_lines(ff), l;
uint32_t words;
unsigned long long aentries = 0, asearched = 0, afound = 0, anew = 0, ainvalid = 0, aignore = 0, adelete = 0, adelete_list = 0,
ainsert = 0, ainsert_failed = 0, adrop = 0, aearly_drop = 0, aicmp_error = 0, aexpect_new = 0, aexpect_create = 0, aexpect_delete = 0, asearch_restart = 0;
for(l = 1; l < lines ;l++) {
words = procfile_linewords(ff, l);
if(words < 17) {
if(words) error("Cannot read /proc/net/stat/nf_conntrack line. Expected 17 params, read %d.", words);
continue;
}
unsigned long long tentries = 0, tsearched = 0, tfound = 0, tnew = 0, tinvalid = 0, tignore = 0, tdelete = 0, tdelete_list = 0, tinsert = 0, tinsert_failed = 0, tdrop = 0, tearly_drop = 0, ticmp_error = 0, texpect_new = 0, texpect_create = 0, texpect_delete = 0, tsearch_restart = 0;
tentries = strtoull(procfile_lineword(ff, l, 0), NULL, 16);
tsearched = strtoull(procfile_lineword(ff, l, 1), NULL, 16);
tfound = strtoull(procfile_lineword(ff, l, 2), NULL, 16);
tnew = strtoull(procfile_lineword(ff, l, 3), NULL, 16);
tinvalid = strtoull(procfile_lineword(ff, l, 4), NULL, 16);
tignore = strtoull(procfile_lineword(ff, l, 5), NULL, 16);
tdelete = strtoull(procfile_lineword(ff, l, 6), NULL, 16);
tdelete_list = strtoull(procfile_lineword(ff, l, 7), NULL, 16);
tinsert = strtoull(procfile_lineword(ff, l, 8), NULL, 16);
tinsert_failed = strtoull(procfile_lineword(ff, l, 9), NULL, 16);
tdrop = strtoull(procfile_lineword(ff, l, 10), NULL, 16);
tearly_drop = strtoull(procfile_lineword(ff, l, 11), NULL, 16);
ticmp_error = strtoull(procfile_lineword(ff, l, 12), NULL, 16);
texpect_new = strtoull(procfile_lineword(ff, l, 13), NULL, 16);
texpect_create = strtoull(procfile_lineword(ff, l, 14), NULL, 16);
texpect_delete = strtoull(procfile_lineword(ff, l, 15), NULL, 16);
tsearch_restart = strtoull(procfile_lineword(ff, l, 16), NULL, 16);
if(!aentries) aentries = tentries;
// sum all the cpus together
asearched += tsearched; // conntrack.search
afound += tfound; // conntrack.search
anew += tnew; // conntrack.new
ainvalid += tinvalid; // conntrack.new
aignore += tignore; // conntrack.new
adelete += tdelete; // conntrack.changes
adelete_list += tdelete_list; // conntrack.changes
ainsert += tinsert; // conntrack.changes
ainsert_failed += tinsert_failed; // conntrack.errors
adrop += tdrop; // conntrack.errors
aearly_drop += tearly_drop; // conntrack.errors
aicmp_error += ticmp_error; // conntrack.errors
aexpect_new += texpect_new; // conntrack.expect
aexpect_create += texpect_create; // conntrack.expect
aexpect_delete += texpect_delete; // conntrack.expect
asearch_restart += tsearch_restart; // conntrack.search
}
RRDSET *st;
// --------------------------------------------------------------------
if(do_sockets) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".sockets");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "sockets", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter Connections", "active connections", 1000, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "connections", NULL, 1, 1, RRDDIM_ABSOLUTE);
}
else rrdset_next(st);
rrddim_set(st, "connections", aentries);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_new) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".new");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "new", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter New Connections", "connections/s", 1001, update_every, RRDSET_TYPE_LINE);
rrddim_add(st, "new", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "ignore", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "invalid", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "new", anew);
rrddim_set(st, "ignore", aignore);
rrddim_set(st, "invalid", ainvalid);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_changes) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".changes");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "changes", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter Connection Changes", "changes/s", 1002, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "inserted", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "deleted", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "delete_list", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "inserted", ainsert);
rrddim_set(st, "deleted", adelete);
rrddim_set(st, "delete_list", adelete_list);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_expect) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".expect");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "expect", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter Connection Expectations", "expectations/s", 1003, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "created", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "deleted", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "new", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "created", aexpect_create);
rrddim_set(st, "deleted", aexpect_delete);
rrddim_set(st, "new", aexpect_new);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_search) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".search");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "search", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter Connection Searches", "searches/s", 1010, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "searched", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "restarted", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "found", NULL, 1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "searched", asearched);
rrddim_set(st, "restarted", asearch_restart);
rrddim_set(st, "found", afound);
rrdset_done(st);
}
// --------------------------------------------------------------------
if(do_errors) {
st = rrdset_find(RRD_TYPE_NET_STAT_CONNTRACK ".errors");
if(!st) {
st = rrdset_create(RRD_TYPE_NET_STAT_CONNTRACK, "errors", NULL, RRD_TYPE_NET_STAT_CONNTRACK, NULL, "Netfilter Errors", "events/s", 1005, update_every, RRDSET_TYPE_LINE);
st->isdetail = 1;
rrddim_add(st, "icmp_error", NULL, 1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "insert_failed", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "drop", NULL, -1, 1, RRDDIM_INCREMENTAL);
rrddim_add(st, "early_drop", NULL, -1, 1, RRDDIM_INCREMENTAL);
}
else rrdset_next(st);
rrddim_set(st, "icmp_error", aicmp_error);
rrddim_set(st, "insert_failed", ainsert_failed);
rrddim_set(st, "drop", adrop);
rrddim_set(st, "early_drop", aearly_drop);
rrdset_done(st);
}
return 0;
}
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