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/*
** Zabbix
** Copyright (C) 2000,2001,2002,2003,2004 Alexei Vladishev
**
** 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 Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/wait.h>
#include <string.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
/* Required for getpwuid */
#include <pwd.h>
#include <signal.h>
#include <errno.h>
#include <time.h>
#include "common.h"
#include "cfg.h"
#include "db.h"
#include "functions.h"
#include "log.h"
#include "pinger.h"
/* Could be improved */
int is_ip(char *ip)
{
int i;
char c;
int dots=0;
int res = SUCCEED;
zabbix_log( LOG_LEVEL_DEBUG, "In process_ip([%s])", ip);
for(i=0;ip[i]!=0;i++)
{
c=ip[i];
if( (c>='0') && (c<='9'))
{
continue;
}
else if(c=='.')
{
dots++;
}
else
{
res = FAIL;
break;
}
}
if( dots!=3)
{
res = FAIL;
}
zabbix_log( LOG_LEVEL_DEBUG, "End of process_ip([%d])", res);
return res;
}
#ifdef ZABBIX_THREADS
int process_value(MYSQL *database, char *key, char *host, char *value)
#else
int process_value(char *key, char *host, char *value)
#endif
{
char sql[MAX_STRING_LEN];
DB_RESULT *result;
DB_ITEM item;
char *s;
zabbix_log( LOG_LEVEL_DEBUG, "In process_value()");
/* IP address? */
if(is_ip(host) == SUCCEED)
{
snprintf(sql,sizeof(sql)-1,"select i.itemid,i.key_,h.host,h.port,i.delay,i.description,i.nextcheck,i.type,i.snmp_community,i.snmp_oid,h.useip,h.ip,i.history,i.lastvalue,i.prevvalue,i.value_type,i.trapper_hosts,i.delta from items i,hosts h where h.status in (%d,%d) and h.hostid=i.hostid and h.ip='%s' and i.key_='%s' and i.status=%d and i.type=%d", HOST_STATUS_MONITORED, HOST_STATUS_UNREACHABLE, host, key, ITEM_STATUS_ACTIVE, ITEM_TYPE_SIMPLE);
}
else
{
snprintf(sql,sizeof(sql)-1,"select i.itemid,i.key_,h.host,h.port,i.delay,i.description,i.nextcheck,i.type,i.snmp_community,i.snmp_oid,h.useip,h.ip,i.history,i.lastvalue,i.prevvalue,i.value_type,i.trapper_hosts,i.delta from items i,hosts h where h.status in (%d,%d) and h.hostid=i.hostid and h.host='%s' and i.key_='%s' and i.status=%d and i.type=%d", HOST_STATUS_MONITORED, HOST_STATUS_UNREACHABLE, host, key, ITEM_STATUS_ACTIVE, ITEM_TYPE_SIMPLE);
}
zabbix_log( LOG_LEVEL_DEBUG, "SQL [%s]", sql);
#ifdef ZABBIX_THREADS
result = DBselect_thread(database, sql);
#else
result = DBselect(sql);
#endif
if(DBnum_rows(result) == 0)
{
DBfree_result(result);
return FAIL;
}
item.itemid=atoi(DBget_field(result,0,0));
item.key=DBget_field(result,0,1);
item.host=DBget_field(result,0,2);
item.port=atoi(DBget_field(result,0,3));
item.delay=atoi(DBget_field(result,0,4));
item.description=DBget_field(result,0,5);
item.nextcheck=atoi(DBget_field(result,0,6));
item.type=atoi(DBget_field(result,0,7));
item.snmp_community=DBget_field(result,0,8);
item.snmp_oid=DBget_field(result,0,9);
item.useip=atoi(DBget_field(result,0,10));
item.ip=DBget_field(result,0,11);
item.history=atoi(DBget_field(result,0,12));
s=DBget_field(result,0,13);
if(s==NULL)
{
item.lastvalue_null=1;
}
else
{
item.lastvalue_null=0;
item.lastvalue_str=s;
item.lastvalue=atof(s);
}
s=DBget_field(result,0,14);
if(s==NULL)
{
item.prevvalue_null=1;
}
else
{
item.prevvalue_null=0;
item.prevvalue_str=s;
item.prevvalue=atof(s);
}
item.value_type=atoi(DBget_field(result,0,15));
item.trapper_hosts=DBget_field(result,0,16);
item.delta=atoi(DBget_field(result,0,17));
#ifdef ZABBIX_THREADS
process_new_value_thread(database,&item,value);
update_triggers_thread(database,item.itemid);
#else
process_new_value(&item,value);
update_triggers(item.itemid);
#endif
DBfree_result(result);
return SUCCEED;
}
#ifdef ZABBIX_THREADS
int create_host_file(MYSQL *database)
#else
int create_host_file(void)
#endif
{
char sql[MAX_STRING_LEN];
FILE *f;
int i,now;
DB_HOST host;
DB_RESULT *result;
zabbix_log( LOG_LEVEL_DEBUG, "In create_host_file()");
f = fopen("/tmp/zabbix_suckerd.pinger", "w");
if( f == NULL)
{
zabbix_log( LOG_LEVEL_ERR, "Cannot hosts file [%s] [%s]",
"/tmp/zabbix_suckerd.pinger", strerror(errno));
return FAIL;
}
now=time(NULL);
/* Select hosts monitored by IP */
snprintf(sql,sizeof(sql)-1,"select distinct h.ip from hosts h,items i where i.hostid=h.hostid and (h.status=%d or (h.status=%d and h.disable_until<=%d)) and (i.key_='%s' or i.key_='%s') and i.type=%d and i.status=%d and h.useip=1", HOST_STATUS_MONITORED, HOST_STATUS_UNREACHABLE, now, SERVER_ICMPPING_KEY, SERVER_ICMPPINGSEC_KEY, ITEM_TYPE_SIMPLE, ITEM_STATUS_ACTIVE);
#ifdef ZABBIX_THREADS
result = DBselect_thread(database, sql);
#else
result = DBselect(sql);
#endif
for(i=0;i<DBnum_rows(result);i++)
{
host.ip=DBget_field(result,i,0);
/* host.host=DBget_field(result,i,2);*/
fprintf(f,"%s\n",host.ip);
zabbix_log( LOG_LEVEL_DEBUG, "IP [%s]", host.ip);
}
DBfree_result(result);
/* Select hosts monitored by hostname */
snprintf(sql,sizeof(sql)-1,"select distinct h.host from hosts h,items i where i.hostid=h.hostid and (h.status=%d or (h.status=%d and h.disable_until<=%d)) and (i.key_='%s' or i.key_='%s') and i.type=%d and i.status=%d and h.useip=0", HOST_STATUS_MONITORED, HOST_STATUS_UNREACHABLE, now, SERVER_ICMPPING_KEY, SERVER_ICMPPINGSEC_KEY, ITEM_TYPE_SIMPLE, ITEM_STATUS_ACTIVE);
#ifdef ZABBIX_THREADS
result = DBselect_thread(database, sql);
#else
result = DBselect(sql);
#endif
for(i=0;i<DBnum_rows(result);i++)
{
host.host=DBget_field(result,i,0);
fprintf(f,"%s\n",host.host);
zabbix_log( LOG_LEVEL_DEBUG, "HOSTNAME [%s]", host.host);
}
DBfree_result(result);
fclose(f);
return SUCCEED;
}
#ifdef ZABBIX_THREADS
int do_ping(MYSQL *database)
#else
int do_ping(void)
#endif
{
FILE *f;
char ip[MAX_STRING_LEN];
char str[MAX_STRING_LEN];
char tmp[MAX_STRING_LEN];
double mseconds;
char *c;
int alive;
zabbix_log( LOG_LEVEL_DEBUG, "In do_ping()");
snprintf(str,sizeof(str)-1,"cat /tmp/zabbix_suckerd.pinger | %s -e 2>/dev/null",CONFIG_FPING_LOCATION);
f=popen(str,"r");
if(f==0)
{
zabbix_log( LOG_LEVEL_ERR, "Cannot execute [%s] [%s]",
CONFIG_FPING_LOCATION, strerror(errno));
return FAIL;
}
while(NULL!=fgets(ip,MAX_STRING_LEN,f))
{
ip[strlen(ip)-1]=0;
zabbix_log( LOG_LEVEL_DEBUG, "Update IP [%s]", ip);
if(strstr(ip,"alive") != NULL)
{
alive=1;
sscanf(ip,"%s is alive (%lf ms)", tmp, &mseconds);
zabbix_log( LOG_LEVEL_DEBUG, "Mseconds [%lf]", mseconds);
}
else
{
alive=0;
}
c=strstr(ip," ");
if(c != NULL)
{
*c=0;
zabbix_log( LOG_LEVEL_DEBUG, "IP [%s] alive [%d]", ip, alive);
if(0 == alive)
{
#ifdef ZABBIX_THREADS
process_value(database,SERVER_ICMPPING_KEY,ip,"0");
#else
process_value(SERVER_ICMPPING_KEY,ip,"0");
#endif
}
else
{
snprintf(tmp,sizeof(tmp)-1,"%f",mseconds/1000);
#ifdef ZABBIX_THREADS
process_value(database,SERVER_ICMPPING_KEY,ip,"1");
process_value(database,SERVER_ICMPPINGSEC_KEY,ip,tmp);
#else
process_value(SERVER_ICMPPING_KEY,ip,"1");
process_value(SERVER_ICMPPINGSEC_KEY,ip,tmp);
#endif
}
}
}
pclose(f);
return SUCCEED;
}
#ifdef ZABBIX_THREADS
void *main_pinger_loop()
#else
int main_pinger_loop()
#endif
{
int ret = SUCCEED;
#ifdef ZABBIX_THREADS
DB_HANDLE database;
#endif
if(1 == CONFIG_DISABLE_PINGER)
{
for(;;)
{
pause();
}
}
else
{
for(;;)
{
#ifdef HAVE_FUNCTION_SETPROCTITLE
setproctitle("connecting to the database");
#endif
#ifdef ZABBIX_THREADS
DBconnect_thread(&database);
#else
DBconnect();
#endif
/* zabbix_set_log_level(LOG_LEVEL_DEBUG);*/
#ifdef ZABBIX_THREADS
ret = create_host_file(&database);
#else
ret = create_host_file();
#endif
if( SUCCEED == ret)
{
#ifdef HAVE_FUNCTION_SETPROCTITLE
setproctitle("pinging hosts");
#endif
#ifdef ZABBIX_THREADS
ret = do_ping(&database);
#else
ret = do_ping();
#endif
}
unlink("/tmp/zabbix_suckerd.pinger");
/* zabbix_set_log_level(LOG_LEVEL_WARNING); */
#ifdef ZABBIX_THREADS
DBclose_thread(&database);
#else
DBclose();
#endif
#ifdef HAVE_FUNCTION_SETPROCTITLE
setproctitle("pinger [sleeping for %d seconds]", CONFIG_PINGER_FREQUENCY);
#endif
sleep(CONFIG_PINGER_FREQUENCY);
}
}
/* Never reached */
}
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