diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | TODO | 6 | ||||
| -rw-r--r-- | getabook.c | 185 |
3 files changed, 189 insertions, 4 deletions
@@ -3,7 +3,7 @@ include config.mk NAME = getxbook -SRC = getgbook.c +SRC = getgbook.c getabook.c LIB = util.o SCRIPTS = makebookpdf.sh getxbookgui DOC = README COPYING LEGAL @@ -1,10 +1,10 @@ before 1.0: create other 2 utilities, fix http bugs, be unicode safe, package for osx & windows -# other utils +# getabook -getabook +not all pages of 0312607172 are got, though they're available from web interface. maybe cookies are needed after all :( -getbnbook +# getbnbook # other todos diff --git a/getabook.c b/getabook.c new file mode 100644 index 0000000..9f10868 --- /dev/null +++ b/getabook.c @@ -0,0 +1,185 @@ +/* See COPYING file for copyright and license details. */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "util.h" + +#define usage "getabook " VERSION " - an amazon look inside the book downloader\n" \ + "usage: getabook [-c|-n] asin\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 + +typedef struct { + int num; + char url[URLMAX]; +} Page; + +Page **pages; +int numpages; +char *bookid; + +int fillurls(char *buf) { + char m[STRMAX]; + char *c, *s; + int i; + + if(!(s = strstr(buf, "\"jumboImageUrls\":{"))) { + free(buf); + return 1; + } + s += strlen("\"jumboImageUrls\":{"); + + for(i=0; *s && i<numpages; i++) { + c = s; + + snprintf(m, STRMAX, "\"%d\":", pages[i]->num); + + while(strncmp(c, m, strlen(m)) != 0) { + while(*c && *c != '}' && *c != ',') + c++; + if(*c == '}') + break; + c++; + } + if(*c == '}') + continue; + + c += strlen(m); + if(!sscanf(c, "\"//sitb-images.amazon.com%[^\"]\"", pages[i]->url)) + continue; + } + + free(buf); + return 0; +} + +int getpagelist() +{ + char url[URLMAX], b[STRMAX]; + char *buf = NULL; + char *s, *c; + int i; + Page *p; + + snprintf(url, URLMAX, "/gp/search-inside/service-data?method=getBookData&asin=%s", bookid); + + if(!get("www.amazon.com", url, NULL, NULL, &buf)) + return 1; + + if((s = strstr(buf, "\"litbPages\":[")) == NULL) + return 1; + s+=strlen("\"litbPages\":["); + + for(i=0, p=pages[0];*s && i<MAXPAGES; s++) { + for(c = b; *s != ',' && *s != ']'; s++, c++) *c = *s; + *(c+1) = '\0'; + p=pages[i++]=malloc(sizeof(**pages));; + sscanf(b, "%d,", &(p->num)); + if(s[0] == ']') + break; + p->url[0] = '\0'; + } + numpages = i; + + fillurls(buf); + + return 0; +} + +int getpageurls(int pagenum) { + char url[URLMAX]; + char *buf = NULL; + + snprintf(url, URLMAX, "/gp/search-inside/service-data?method=goToPage&asin=%s&page=%d", bookid, pagenum); + + if(!get("www.amazon.com", url, NULL, NULL, &buf)) + return 1; + + fillurls(buf); + + return 0; +} + +int getpage(Page *page) +{ + char path[STRMAX]; + snprintf(path, STRMAX, "%04d.png", page->num); + + if(page->url[0] == '\0') { + fprintf(stderr, "%d not found\n", page->num); + return 1; + } + + if(gettofile("sitb-images.amazon.com", page->url, NULL, NULL, path)) { + fprintf(stderr, "%d failed\n", page->num); + return 1; + } + + printf("%d downloaded\n", page->num); + fflush(stdout); + return 0; +} + +int main(int argc, char *argv[]) +{ + char buf[BUFSIZ], pgpath[STRMAX]; + char in[16]; + int a, i, n; + FILE *f; + + 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; + } + + bookid = argv[argc-1]; + + pages = malloc(sizeof(*pages) * MAXPAGES); + if(getpagelist(bookid, pages)) { + fprintf(stderr, "Could not find any pages for %s\n", bookid); + return 1; + } + + if(argc == 2) { + for(i=0; i<numpages; i++) { + snprintf(pgpath, STRMAX, "%04d.png", pages[i]->num); + if((f = fopen(pgpath, "r")) != NULL) { + fclose(f); + continue; + } + if(pages[i]->url[0] == '\0') + getpageurls(pages[i]->num); + 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]->num == n) { + i = a; + break; + } + } + if(i == -1) { + fprintf(stderr, "%s not found\n", in); + continue; + } + if(pages[i]->url[0] == '\0') + getpageurls(pages[i]->num); + getpage(pages[i]); + } + } + + for(i=0; i<numpages; i++) free(pages[i]); + free(pages); + + return EXIT_SUCCESS; +} |