#ifndef _UTIL_H_
#define _UTIL_H

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define info(msg, ...) { fprintf( stdout, msg, ##__VA_ARGS__ ) ; fprintf( stdout, "\n" ); }
#define warn(msg, ...) { fprintf( stderr, msg, ##__VA_ARGS__ ) ; fprintf( stderr, "\n" ); }


void* xmalloc( size_t bytes );
int create_tun( const char* name );

int link_set_up( char *link_name, int state );

/* Our programs use this common struct to take advantage of common init code */
struct session {
    struct rlocs *rlocs;
    int listen_if;
    int output_if;
    int same_if;
};

int session_setup( struct session *session, char *config_file, char *listen_if, char *output_if  );
void session_teardown( struct session *session );



#endif