/*
 *  Copyright (C) 2004 Christos Tsantilas
 *
 *  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 "c-icap.h"
#include <stdio.h>
#include "net_io.h"
#include "debug.h"
#include "module.h"
#include "log.h"
#include "cfg_param.h"

/*
extern char *PIDFILE;
extern char *RUN_USER;
extern char *RUN_GROUP;
extern int PORT;
*/

extern int DAEMON_MODE;
extern int MAX_SECS_TO_LINGER;
char MY_HOSTNAME[CI_MAXHOSTNAMELEN+1];

void init_conf_tables();
int config(int,char **);
int start_server(ci_socket fd);
int store_pid(char *pidfile);
int is_icap_running(char *pidfile);
int set_running_permissions(char *user,char *group);


void compute_my_hostname(){
     char hostname[64];
     struct hostent *hent;
     int ret;
     ret=gethostname(hostname,63);
     if(ret==0){
	  hostname[63]='\0';
	  if((hent=gethostbyname(hostname))!=NULL){
	       strncpy(MY_HOSTNAME,hent->h_name,CI_MAXHOSTNAMELEN);
	       MY_HOSTNAME[CI_MAXHOSTNAMELEN]='\0';
	  }
	  else
	       strcpy(MY_HOSTNAME,hostname);
     }
     else
	  strcpy(MY_HOSTNAME,"localhost");
}

#if ! defined(_WIN32)
void run_as_daemon(){
     int pid;
     if((pid=fork())<0){
	  ci_debug_printf(1,"Can not fork. exiting...");
	  exit(-1);
     }
     if(pid)
	  exit(0);
}
#endif

int main(int argc,char **argv){
     ci_socket s;

#if ! defined(_WIN32)     
     __log_error=(void(*)(void *, const char *,... ))log_server; /*set c-icap library log  function*/
#else
     __vlog_error=vlog_server; /*set c-icap library  log function*/
#endif
     
     if(!(CONF.MAGIC_DB=ci_magics_db_build(CONF.magics_file))){
	  ci_debug_printf(1,"Can not load magic file %s!!!\n",CONF.magics_file);
     }
     
     init_conf_tables();
     init_modules();
     config(argc,argv);
     compute_my_hostname();
     ci_debug_printf(1,"My hostname is:%s\n",MY_HOSTNAME);

#if ! defined(_WIN32)     
     if(is_icap_running(CONF.PIDFILE)){
	  ci_debug_printf(1,"c-icap server already running!\n");
	  exit(-1);
     }

     if(DAEMON_MODE)
	  run_as_daemon();

     store_pid(CONF.PIDFILE);
     if(!set_running_permissions(CONF.RUN_USER,CONF.RUN_GROUP))
	  exit(-1);
#endif
     

     if(!log_open()){
          ci_debug_printf(1,"Can not init loggers. Exiting.....\n");
          exit(-1);
     }

 
     s=icap_init_server(CONF.PORT,&(CONF.PROTOCOL_FAMILY),MAX_SECS_TO_LINGER); 


     if(s==CI_SOCKET_ERROR)
	  return -1;


     post_init_modules();
     post_init_services();

     start_server(s);

     return 0;
}