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/*
** ZABBIX
** Copyright (C) 2000-2005 SIA Zabbix
**
** 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 <sys/stat.h>
#include <string.h>
/* Required for getpwuid */
#include <pwd.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <time.h>
/* getopt() */
#include <unistd.h>
#include "cfg.h"
#include "pid.h"
#include "db.h"
#include "log.h"
#include "zlog.h"
#include "common.h"
#include "../functions.h"
#include "../expression.h"
#include "trapper.h"
int process_trap(int sockfd,char *s, int max_len)
{
char *p,*line,*host;
char *server,*key,*value_string;
char copy[MAX_STRING_LEN];
char result[MAX_STRING_LEN];
char host_b64[MAX_STRING_LEN],key_b64[MAX_STRING_LEN],value_b64[MAX_STRING_LEN];
char host_dec[MAX_STRING_LEN],key_dec[MAX_STRING_LEN],value_dec[MAX_STRING_LEN];
char lastlogsize[MAX_STRING_LEN];
char timestamp[MAX_STRING_LEN];
char source[MAX_STRING_LEN];
char severity[MAX_STRING_LEN];
int ret=SUCCEED;
int i;
for( p=s+strlen(s)-1; p>s && ( *p=='\r' || *p =='\n' || *p == ' ' ); --p );
p[1]=0;
zabbix_log( LOG_LEVEL_DEBUG, "Trapper got [%s]", s);
/* Request for list of active checks */
if(strncmp(s,"ZBX_GET_ACTIVE_CHECKS", strlen("ZBX_GET_ACTIVE_CHECKS")) == 0)
{
line=strtok(s,"\n");
host=strtok(NULL,"\n");
ret=send_list_of_active_checks(sockfd, host);
}
/* Process information sent by zabbix_sender */
else
{
/* New XML protocol? */
if(s[0]=='<')
{
zabbix_log( LOG_LEVEL_DEBUG, "XML received [%s]", s);
comms_parse_response(s,host_dec,key_dec,value_dec,lastlogsize,timestamp,source,severity,sizeof(host_dec)-1);
server=host_dec;
value_string=value_dec;
key=key_dec;
}
else
{
strscpy(copy,s);
server=(char *)strtok(s,":");
if(NULL == server)
{
return FAIL;
}
key=(char *)strtok(NULL,":");
if(NULL == key)
{
return FAIL;
}
value_string=strchr(copy,':');
value_string=strchr(value_string+1,':');
if(NULL == value_string)
{
return FAIL;
}
/* It points to ':', so have to increment */
value_string++;
lastlogsize[0]=0;
timestamp[0]=0;
source[0]=0;
severity[0]=0;
}
ret=process_data(sockfd,server,key,value_string,lastlogsize,timestamp,source,severity);
if( SUCCEED == ret)
{
snprintf(result,sizeof(result)-1,"OK\n");
}
else
{
snprintf(result,sizeof(result)-1,"NOT OK\n");
}
zabbix_log( LOG_LEVEL_DEBUG, "Sending back [%s]", result);
zabbix_log( LOG_LEVEL_DEBUG, "Length [%d]", strlen(result));
zabbix_log( LOG_LEVEL_DEBUG, "Sockfd [%d]", sockfd);
if( write(sockfd,result,strlen(result)) == -1)
{
zabbix_log( LOG_LEVEL_WARNING, "Error sending result back [%s]",strerror(errno));
zabbix_syslog("Trapper: error sending result back [%s]",strerror(errno));
}
zabbix_log( LOG_LEVEL_DEBUG, "After write()");
}
return ret;
}
void process_trapper_child(int sockfd)
{
ssize_t nread;
char line[MAX_STRING_LEN];
static struct sigaction phan;
phan.sa_handler = &signal_handler;
sigemptyset(&phan.sa_mask);
phan.sa_flags = 0;
sigaction(SIGALRM, &phan, NULL);
alarm(CONFIG_TIMEOUT);
zabbix_log( LOG_LEVEL_DEBUG, "Before read()");
if( (nread = read(sockfd, line, MAX_STRING_LEN)) < 0)
{
if(errno == EINTR)
{
zabbix_log( LOG_LEVEL_DEBUG, "Read timeout");
}
else
{
zabbix_log( LOG_LEVEL_DEBUG, "read() failed");
}
zabbix_log( LOG_LEVEL_DEBUG, "After read() 1");
alarm(0);
return;
}
zabbix_log( LOG_LEVEL_DEBUG, "After read() 2 [%d]",nread);
if(nread>0)
{
line[nread-1]=0;
}
zabbix_log( LOG_LEVEL_DEBUG, "Got line:%s", line);
process_trap(sockfd,line, MAX_STRING_LEN);
alarm(0);
}
void child_trapper_main(int i,int listenfd, int addrlen)
{
int connfd;
socklen_t clilen;
struct sockaddr cliaddr;
zabbix_log( LOG_LEVEL_DEBUG, "In child_main()");
/* zabbix_log( LOG_LEVEL_WARNING, "zabbix_trapperd %ld started",(long)getpid());*/
zabbix_log( LOG_LEVEL_WARNING, "server #%d started [Trapper]", i);
zabbix_log( LOG_LEVEL_DEBUG, "Before DBconnect()");
DBconnect();
zabbix_log( LOG_LEVEL_DEBUG, "After DBconnect()");
for(;;)
{
clilen = addrlen;
#ifdef HAVE_FUNCTION_SETPROCTITLE
setproctitle("waiting for connection");
#endif
zabbix_log( LOG_LEVEL_DEBUG, "Before accept()");
connfd=accept(listenfd,&cliaddr, &clilen);
zabbix_log( LOG_LEVEL_DEBUG, "After accept()");
#ifdef HAVE_FUNCTION_SETPROCTITLE
setproctitle("processing data");
#endif
process_trapper_child(connfd);
close(connfd);
}
DBclose();
}
pid_t child_trapper_make(int i,int listenfd, int addrlen)
{
pid_t pid;
if((pid = fork()) >0)
{
return (pid);
}
else
{
/* server_num=i; */
}
/* never returns */
child_trapper_main(i, listenfd, addrlen);
/* avoid compilator warning */
return 0;
}
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