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/* See COPYING file for copyright, license and warranty details. */
#define VERSION "prealpha"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.c"
#define usage "getgbook isbn"
#define hostname "books.google.com"
#define URLMAX 1024
#define BOOKID_LEN 12
char *getgbookid(char *isbn)
{
char url[URLMAX];
int i;
FILE *srv;
char *buf, *bookid, *c;
i = dial("books.google.com", "80");
srv = fdopen(i, "r+");
/* NOTE: new api returns json, and looks like this:
* http://www.googleapis.com/books/v1/volumes?q=isbn:1589235126
* (this needs https, which we don't yet support) */
snprintf(url, URLMAX, "/books/feeds/volumes?q=isbn:%s", isbn);
bookid = malloc(sizeof(char *) * BOOKID_LEN);
if((buf = get(srv, "books.google.com", url)) == NULL)
fprintf(stderr,"Error downloading page\n");
else {
c = strstr(buf,"<dc:identifier>");
strncpy(bookid, c+15, BOOKID_LEN);
bookid[BOOKID_LEN] = '\0';
free(buf);
}
return bookid;
}
int main(int argc, char *argv[])
{
int i;
char *bookid, isbn[16];
FILE *srv;
if(argc != 2)
die("usage: " usage "\n");
strncpy(isbn,argv[1],16);
i = dial(hostname, "80");
srv = fdopen(i, "r+");
bookid = getgbookid(isbn);
printf("bookid is %s\n", bookid);
free(bookid);
return 0;
}
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