-#include "appconfig.h"
-#include "procfile.h"
-#include "rrd.h"
-#include "plugin_proc.h"
-#include "log.h"
-
-#define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
-#define RRD_TYPE_NET_STAT_SYNPROXY "synproxy"
-#define RRD_TYPE_NET_STAT_SYNPROXY_LEN strlen(RRD_TYPE_NET_STAT_SYNPROXY)
-
-int do_proc_net_stat_synproxy(int update_every, unsigned long long dt) {
- static int do_entries = -1, do_cookies = -1, do_syns = -1, do_reopened = -1;
- static procfile *ff = NULL;
-
- if(do_entries == -1) do_entries = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY entries", CONFIG_ONDEMAND_ONDEMAND);
- if(do_cookies == -1) do_cookies = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY cookies", CONFIG_ONDEMAND_ONDEMAND);
- if(do_syns == -1) do_syns = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY SYN received", CONFIG_ONDEMAND_ONDEMAND);
- if(do_reopened == -1) do_reopened = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY connections reopened", CONFIG_ONDEMAND_ONDEMAND);
-
- if(dt) {};
-
- if(!ff) {
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/stat/synproxy");
- ff = procfile_open(config_get("plugin:proc:/proc/net/stat/synproxy", "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
-
- // make sure we have 3 lines
- size_t lines = procfile_lines(ff), l;
- if(lines < 2) {
- error("/proc/net/stat/synproxy has %zu lines, expected no less than 2. Disabling it.", lines);
- return 1;
- }
-
- unsigned long long entries = 0, syn_received = 0, cookie_invalid = 0, cookie_valid = 0, cookie_retrans = 0, conn_reopened = 0;
-
- // synproxy gives its values per CPU
- for(l = 1; l < lines ;l++) {
- int words = procfile_linewords(ff, l);
- if(words < 6) continue;
-
- entries += strtoull(procfile_lineword(ff, l, 0), NULL, 16);
- syn_received += strtoull(procfile_lineword(ff, l, 1), NULL, 16);
- cookie_invalid += strtoull(procfile_lineword(ff, l, 2), NULL, 16);
- cookie_valid += strtoull(procfile_lineword(ff, l, 3), NULL, 16);
- cookie_retrans += strtoull(procfile_lineword(ff, l, 4), NULL, 16);
- conn_reopened += strtoull(procfile_lineword(ff, l, 5), NULL, 16);
- }
-
- unsigned long long events = entries + syn_received + cookie_invalid + cookie_valid + cookie_retrans + conn_reopened;
-
- RRDSET *st;
-
- // --------------------------------------------------------------------
-
- if((do_entries == CONFIG_ONDEMAND_ONDEMAND && events) || do_entries == CONFIG_ONDEMAND_YES) {
- do_entries = CONFIG_ONDEMAND_YES;
-
- st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_entries");
- if(!st) {
- st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_entries", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY Entries Used", "entries", 1004, update_every, RRDSET_TYPE_LINE);
-
- rrddim_add(st, "entries", NULL, 1, 1, RRDDIM_ABSOLUTE);
- }
- else rrdset_next(st);
-
- rrddim_set(st, "entries", entries);
- rrdset_done(st);
- }
-
- // --------------------------------------------------------------------
-
- if((do_syns == CONFIG_ONDEMAND_ONDEMAND && events) || do_syns == CONFIG_ONDEMAND_YES) {
- do_syns = CONFIG_ONDEMAND_YES;
-
- st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_syn_received");
- if(!st) {
- st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_syn_received", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY SYN Packets received", "SYN/s", 1001, update_every, RRDSET_TYPE_LINE);
-
- rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
- }
- else rrdset_next(st);
-
- rrddim_set(st, "received", syn_received);
- rrdset_done(st);
- }
-
- // --------------------------------------------------------------------
-
- if((do_reopened == CONFIG_ONDEMAND_ONDEMAND && events) || do_reopened == CONFIG_ONDEMAND_YES) {
- do_reopened = CONFIG_ONDEMAND_YES;
-
- st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened");
- if(!st) {
- st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY Connections Reopened", "connections/s", 1003, update_every, RRDSET_TYPE_LINE);
-
- rrddim_add(st, "reopened", NULL, 1, 1, RRDDIM_INCREMENTAL);
- }
- else rrdset_next(st);