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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
/* For strtok */
#include <string.h>
/* For config file operations */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#include <syslog.h>
#include "common.h"
#include "db.h"
#include "functions.h"
void signal_handler( int sig )
{
if( SIGALRM == sig )
{
signal( SIGALRM, signal_handler );
// fprintf(stderr,"Timeout while executing operation.");
}
if( SIGQUIT == sig || SIGINT == sig || SIGTERM == sig )
{
// fprintf(stderr,"\nGot QUIT or INT or TERM signal. Exiting..." );
}
exit( FAIL );
}
int check_security(void)
{
char *sname;
char *config;
struct sockaddr_in name;
int i;
int file;
config=(char *)malloc(16);
file=open("/etc/zabbix/zabbix_agent.conf",O_RDONLY);
if(file == -1)
{
// printf("Open failed");
return FAIL;
}
i=read(file, config, 16);
config[i-1]=0;
close(file);
i=sizeof(struct sockaddr_in);
if(getpeername(0, (struct sockaddr *)&name, &i) == 0)
{
// printf("%d\n",name.sin_port);
sname=inet_ntoa(name.sin_addr);
// printf("From:=%s=\n",sname);
if(strcmp(sname,config)!=0)
{
return FAIL;
}
}
return SUCCEED;
}
int process_data(char *server,char *key, double value)
{
char sql[1024];
int itemid;
double lastvalue;
int now;
DB_RESULT *result;
sprintf(sql,"select i.itemid,i.lastvalue from items i,hosts h where h.status=0 and h.hostid=i.hostid and h.host='%s' and i.key_='%s' and i.status=2;",server,key);
result = DBselect(sql);
if(result==NULL)
{
DBfree_result(result);
return FAIL;
}
if(DBnum_rows(result)==0)
{
DBfree_result(result);
return FAIL;
}
if( DBget_field(result,0,0) == NULL )
{
DBfree_result(result);
return FAIL;
}
itemid=atoi(DBget_field(result,0,0));
now = time(NULL);
sprintf(sql,"insert into history (itemid,clock,value) values (%d,%d,%g);",itemid,now,value);
DBexecute(sql);
if(NULL == DBget_field(result,0,1))
{
now = time(NULL);
sprintf(sql,"update items set lastvalue=%g,lastclock=%d where itemid=%d;",value,now,itemid);
}
else
{
lastvalue=atof(DBget_field(result,0,1));
now = time(NULL);
sprintf(sql,"update items set prevvalue=%g,lastvalue=%g,lastclock=%d where itemid=%d;",lastvalue,value,now,itemid);
}
DBexecute(sql);
update_triggers( itemid );
DBfree_result(result);
return SUCCEED;
}
int main()
{
char *s,*p;
char *server,*key,*value_string;
double value;
int ret=SUCCEED;
// if(check_security() == FAIL)
// {
// exit(FAIL);
// }
signal( SIGINT, signal_handler );
signal( SIGQUIT, signal_handler );
signal( SIGTERM, signal_handler );
signal( SIGALRM, signal_handler );
s=(char *) malloc( 1024 );
alarm(TRAPPER_TIMEOUT);
openlog("zabbix_trapper",LOG_PID,LOG_USER);
// ret=setlogmask(LOG_UPTO(LOG_DEBUG));
ret=setlogmask(LOG_UPTO(LOG_WARNING));
fgets(s,1024,stdin);
for( p=s+strlen(s)-1; p>s && ( *p=='\r' || *p =='\n' || *p == ' ' ); --p );
p[1]=0;
server=(char *)strtok(s,":");
if(NULL == server)
{
return FAIL;
}
key=(char *)strtok(NULL,":");
if(NULL == key)
{
return FAIL;
}
value_string=(char *)strtok(NULL,":");
if(NULL == value_string)
{
return FAIL;
}
value=atof(value_string);
DBconnect();
ret=process_data(server,key,value);
alarm(0);
if(SUCCEED == ret)
{
printf("OK\n");
}
free(s);
return ret;
}
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