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/*
** ZABBIX
** Copyright (C) 2000-2006 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 <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 "log.h"
#include "zlog.h"
#include "zbxsock.h"
#include "nodecomms.h"
/******************************************************************************
* *
* Function: send_to_node *
* *
* Purpose: send configuration changes to required node *
* *
* Parameters: *
* *
* Return value: SUCCESS - processed succesfully *
* FAIL - an error occured *
* *
* Author: Alexei Vladishev *
* *
* Comments: *
* *
******************************************************************************/
int send_to_node(int dest_nodeid, int nodeid, char *data)
{
int i,s;
char answer[MAX_STRING_LEN];
struct hostent *hp;
struct sockaddr_in myaddr_in;
struct sockaddr_in servaddr_in;
char ip[MAX_STRING_LEN];
int port;
int ret = FAIL;
int written;
char header[5]="ZBXD\1";
zbx_uint64_t len64;
DB_RESULT result;
DB_ROW row;
zabbix_log( LOG_LEVEL_WARNING, "NODE %d: Sending data of node %d to node %d datalen %d", CONFIG_NODEID, nodeid, dest_nodeid, strlen(data));
result = DBselect("select ip, port from nodes where nodeid=%d", dest_nodeid);
row = DBfetch(result);
if(!row)
{
DBfree_result(result);
zabbix_log( LOG_LEVEL_WARNING, "Node [%d] in unknown", dest_nodeid);
return FAIL;
}
zbx_strlcpy(ip,row[0],sizeof(ip));
port=atoi(row[1]);
DBfree_result(result);
servaddr_in.sin_family=AF_INET;
if(NULL == (hp = zbx_gethost(ip)))
{
zabbix_log( LOG_LEVEL_WARNING, "Cannot resolve [%s] for node [%d]", ip, dest_nodeid);
return FAIL;
}
servaddr_in.sin_addr.s_addr=((struct in_addr *)(hp->h_addr))->s_addr;
servaddr_in.sin_port=htons(port);
s=socket(AF_INET,SOCK_STREAM,0);
if(s == -1)
{
zabbix_log( LOG_LEVEL_WARNING, "Cannot create socket [%s] for node [%d]", ip, dest_nodeid);
return FAIL;
}
myaddr_in.sin_family = AF_INET;
myaddr_in.sin_port=0;
myaddr_in.sin_addr.s_addr=INADDR_ANY;
if( connect(s,(struct sockaddr *)&servaddr_in,sizeof(struct sockaddr_in)) == -1 )
{
zabbix_log( LOG_LEVEL_WARNING, "Cannot connect [%s] to node [%d]", ip, dest_nodeid);
close(s);
return FAIL;
}
written = 0;
/* Write header */
i=write(s, header, 5);
if(i == -1)
{
zabbix_log( LOG_LEVEL_WARNING, "Error writing to node [%d] [%s]", dest_nodeid, strerror(errno));
close(s);
return FAIL;
}
len64 = (zbx_uint64_t)strlen(data);
/* Write data length */
i=write(s, &len64, sizeof(len64));
if(i == -1)
{
zabbix_log( LOG_LEVEL_WARNING, "Error writing to node [%d] [%s]", dest_nodeid, strerror(errno));
close(s);
return FAIL;
}
while(written<strlen(data))
{
i=write(s, data+written,strlen(data)-written);
if(i == -1)
{
zabbix_log( LOG_LEVEL_WARNING, "Error writing to node [%d] [%s]", dest_nodeid, strerror(errno));
close(s);
return FAIL;
}
written+=i;
}
i=sizeof(struct sockaddr_in);
i=read(s,answer,MAX_STRING_LEN-1);
if(i==-1)
{
zabbix_log( LOG_LEVEL_WARNING, "Error reading from node [%d]", dest_nodeid);
close(s);
return FAIL;
}
answer[i-1]=0;
if(strcmp(answer,"OK") == 0)
{
zabbix_log( LOG_LEVEL_DEBUG, "OK");
ret = SUCCEED;
}
else
{
zabbix_log( LOG_LEVEL_DEBUG, "NOT OK");
}
if( close(s)!=0 )
{
}
return ret;
}
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