linux_mond.c

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/***************************************************************************
                          linux_mond.c  -  description
                             -------------------
    begin                : Thu Sep 27 08:08:03 EET 2001
    copyright            : (C) 2001-2002 by Petri Turunen
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif


#include "linux_mond.h"
#include <stdlib.h> //for malloc and free
#include <ctype.h> //for isalpha

//Global variables
unsigned char CRYPTIV[9];
char CRYPTKEY[17];
struct conf_t server_config; //defined in linux_mond.c
char PIDDIR[21];
 
int PORT=8881;
char *TIEDOSTO="/etc/linux_mond.conf";
struct msg_t ipmsg;

unsigned char read_buf[1025];

int silent=0;
int to_postgresql=0;
int tosyslog=1;

void sig_child(int signo);

int get_strings(char *buff);
int client(int inbound_connection, char *ip);

void sig_child(int signo)
{
 pid_t pid;
 int   stat;

 while( (pid = waitpid(-1, &stat, WNOHANG)) > 0)
 {
  if(silent!=1)
  {
   openlog("linux_mond",LOG_PID,LOG_LOCAL7);
   syslog(LOG_INFO, "child %d terminated.", pid);
   closelog();
  }
 }
	  
 return;
}

void sighup()
{
 slog(2,"Received SIGHUP.\n");
}

void sigterm()
{
 slog(2,"Received SIGTERM. Shutting down.\n");
 exit(0);
}

void sig_alarm()
{
 return;
}

int server()
{
	 // Variables for the server component of the application.

	 int file_descriptor;	// File descriptor that represents the server socket.
	 struct	sockaddr_in	server_address;	// Really only contains the port we want to listen on.
	 int	inbound_connection;	// File descriptor that represents the socket of the inbound connection.
	 struct	sockaddr_in	inbound_address;	// Address of the inbound connection.
	 int	inbound_address_size;	// Size of the structure for the inbound connection.
	 pid_t childpit;
	 int len;
	 const int on = 1;
	 struct timeval tv;

         tv.tv_sec = 5;
         tv.tv_usec = 0;


 	 // Code for the server component begins here.

	// Allocate a TCP socket for the internet
	file_descriptor=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
	 
	if (file_descriptor<0)	// Check to see if there was a failure in allocation.
	{
	 slog(2,"linux_mond.c: socket: %s",strerror(errno));
	 return -1;
	}

	 //sallitaan osoitteen uudelleen k鋣tt