Thread: fault with code but unsure where!

hi everyone
ive just made a little program that uses structures, and memory allocation
the program comes up with a error message saying 'segmentation fault'
i think this is because there is a bug in the memory allocation part of the program but im not sure

Code:

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

struct book
{
    char *author;
    char *name;
}copy1;
struct book copy2;

int main()
{
    copy1.author=malloc (*copy1.author * sizeof (char));
    copy1.name=malloc (*copy1.name * sizeof (char));
    printf("please enter the authors name and the name of the title\n");
    gets(copy1.author);
    gets(copy1.name);
    
    copy2.author = copy1.author;
    copy2.name = copy1.name;
    free(copy1.author);
    free(copy1.name);
    
    printf("your book %s by %s is on its way in the post\n", copy2.name, copy2.author);
    return 0;
}

thanks in advance