Add getbnbook tool

1 files changed, 152 insertions, 0 deletions

diff --git a/getbnbook.c b/getbnbook.c
new file mode 100644
index 0000000..806b2e8
--- /dev/null
+++ b/getbnbook.c
@@ -0,0 +1,152 @@
+/* See COPYING file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include "util.h"
+
+#define usage "getbnbook " VERSION " - a barnes and noble book downloader\n" \
+              "usage: getbnbook [-n] isbn13\n" \
+              "  -n download pages from numbers in stdin\n" \
+              "  otherwise, all available pages will be downloaded\n"
+
+#define URLMAX 1024
+#define STRMAX 1024
+#define MAXPAGES 9999
+
+int pages[MAXPAGES];
+int numpages;
+char urlpath[STRMAX];
+char bookid[STRMAX];
+char *bookdir;
+char cookies[COOKIEMAX];
+
+int getpagelist()
+{
+	char url[URLMAX];
+	char *buf = NULL;
+	char *s, *l;
+	int i, num;
+	char avail[STRMAX];
+	char dummy1[STRMAX], dummy2[STRMAX];
+
+	numpages = 0;
+
+	snprintf(url, URLMAX, "/DigBooks/viewer/bookviewmanager.aspx?op=getbookinfo&ean=%s", bookid);
+
+	if(!get("search2.barnesandnoble.com", url, NULL, cookies, &buf))
+		return 1;
+
+	/* find page url structure */
+	if((s=strstr(buf, "<imagesize name=\"med\"><param name=\"path\">")) == NULL) {
+		free(buf);
+		return 1;
+	}
+	s+=strlen("<imagesize name=\"med\"><param name=\"path\">");
+	l = strchr(s, '<');
+	for(i=0; s<l && i<STRMAX; s++,i++)
+		urlpath[i] = *s;
+	urlpath[i] = '\0';
+
+	/* find available pages */
+	for(i=0, s=buf;*s && i<MAXPAGES; s++) {
+		if((s = strstr(s, "<page ")) == NULL)
+			break;
+		sscanf(s, "<page sequence=\"%d\" type=\"bitmap\" toc=\"%[^\"]\" folio=\"%[^\"]\" freevendstatus=\"%[^\"]\" />", &num, dummy1, dummy2, avail);
+
+		if(strncmp(avail, "true", STRMAX) == 0)
+			pages[i++] = num;
+	}
+
+	numpages = i;
+
+	free(buf);
+	return 0;
+}
+
+int getpage(int pagenum)
+{
+	char path[STRMAX], pageurl[STRMAX];
+	char *s;
+
+	snprintf(path, STRMAX, "%s/%04d.png", bookdir, pagenum);
+
+	s=strchr(urlpath+7, '/');
+	snprintf(pageurl, STRMAX, s, pagenum);
+
+	if(gettofile("search2.barnesandnoble.com", pageurl, cookies, NULL, path)) {
+		fprintf(stderr, "%d failed\n", pagenum);
+		return 1;
+	}
+
+	printf("%d downloaded\n", pagenum);
+	fflush(stdout);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	char *tmp;
+	char buf[STRMAX], pgpath[STRMAX];
+	char in[16];
+	int a, i, n;
+	FILE *f;
+	DIR *d;
+
+	if(argc < 2 || argc > 3 ||
+	   (argc == 3 && (argv[1][0]!='-' || argv[1][1] != 'n'))
+	   || (argc >= 2 && argv[1][0] == '-' && argv[1][1] == 'h')) {
+		fputs(usage, stdout);
+		return 1;
+	}
+
+	strncpy(bookid, argv[argc-1], STRMAX);
+	bookdir = argv[argc-1];
+
+	/* get cookie */
+	if(get("www.barnesandnoble.com", "/", NULL, cookies, &tmp))
+		free(tmp);
+
+	if(getpagelist(bookid, pages)) {
+		fprintf(stderr, "Could not find any pages for %s\n", bookid);
+		return 1;
+	}
+
+	if(!((d = opendir(bookdir)) || !mkdir(bookdir, S_IRWXU))) {
+		fprintf(stderr, "Could not create directory %s\n", bookdir);
+		return 1;
+	}
+	if(d) closedir(d);
+
+	if(argc == 2) {
+		for(i=0; i<numpages; i++) {
+			snprintf(pgpath, STRMAX, "%s/%04d.png", bookdir, pages[i]);
+			if((f = fopen(pgpath, "r")) != NULL) {
+				fclose(f);
+				continue;
+			}
+			getpage(pages[i]);
+		}
+	} else if(argv[1][0] == '-' && argv[1][1] == 'n') {
+		while(fgets(buf, BUFSIZ, stdin)) {
+			sscanf(buf, "%15s", in);
+			i = -1;
+			sscanf(in, "%d", &n);
+			for(a=0; a<numpages; a++) {
+				if(pages[a] == n) {
+					i = a;
+					break;
+				}
+			}
+			if(i == -1) {
+				fprintf(stderr, "%s not found\n", in);
+				continue;
+			}
+			getpage(pages[i]);
+		}
+	}
+
+	return EXIT_SUCCESS;
+}