#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<unistd.h>
#include<sys/timeb.h>
#include<ctype.h>
#include<fcntl.h>

#define MAX_FILENAME 20
#define MAX_BUFF 1024
#define FIFO_NAME "/tmp/Vpim_messenger"
char filename[MAX_FILENAME];

int main()
{
	struct timeb tp;
	int  outfile , fifo ,bytes_read,bytes_written, locked=1;
	char buff[MAX_BUFF];
	char message[MAX_BUFF] ; 
	ftime( &tp);
	sprintf(filename,"/tmp/%d.%d",tp.time,getpid());
	sprintf(message,"INFILE: %s",filename);
	outfile = open(filename,O_WRONLY|O_CREAT,S_IRWXU|S_IRWXO);
	while((bytes_read = read(STDIN_FILENO,buff,sizeof(buff))>0))
	{
		if((bytes_written = write(outfile , buff ,bytes_read))!=bytes_read)
		{
			fprintf(stderr,"write error");
			exit(1);
		}
	}
	fifo = open(FIFO_NAME,O_WRONLY,S_IWUSR);
	while(locked)
	{
		if(!(lockf(fifo,F_TEST,0)))
		{
			lockf(fifo,F_LOCK,0);
			locked = 0;
		}
	}
	if(bytes_written = write(fifo , message , sizeof(message))!= sizeof(message))
	{
		fprintf(stderr,"write error");
		exit(1);
	}
	
	return 1;
}