mirror of https://github.com/mpv-player/mpv
140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
/* (C)2001 by LGB (Gabor Lenart), based on example programs in libcss
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lgb@lgb.hu */
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/* don't do anything with this source if css support was not requested */
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#include "config.h"
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#ifdef HAVE_LIBCSS
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#include <stdio.h>
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#include <stdlib.h>
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#include <linux/cdrom.h>
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// FIXME #include <string.h> conflicts with #include <linux/fs.h> (below)
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//#include <string.h> // FIXME this conflicts with #include <linux/fs.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <css.h>
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#include "dvdauth.h"
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char *dvd_auth_device=NULL;
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unsigned char key_disc[2048];
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unsigned char key_title[5];
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unsigned char *dvdimportkey=NULL;
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int descrambling=0;
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#include <linux/fs.h>
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#ifndef FIBMAP
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#define FIBMAP 1
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#endif
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static int path_to_lba ( int fd )
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{
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int lba = 0;
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if (ioctl(fd, FIBMAP, &lba) < 0) {
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perror ("ioctl FIBMAP");
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fprintf(stderr,"Hint: run mplayer as root!\n");
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// close(fd);
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return -1;
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}
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return lba;
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}
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static void reset_agids ( int fd )
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{
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dvd_authinfo ai;
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int i;
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for (i = 0; i < 4; i++) {
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memset(&ai, 0, sizeof(ai));
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ai.type = DVD_INVALIDATE_AGID;
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ai.lsa.agid = i;
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ioctl(fd, DVD_AUTH, &ai);
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}
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}
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int dvd_import_key ( unsigned char *hexkey )
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{
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unsigned char *t=key_title;
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int digit=4,len;
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bzero(key_title,sizeof(key_title));
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// printf("DVD key: %s\n",hexkey);
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for (len=0;len<10;len++) {
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// printf("-> %c\n",*hexkey);
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if (!*hexkey) return 1;
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if (*hexkey>='A'&&*hexkey<='F') *t|=(*hexkey-'A'+10)<<digit;
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else if (*hexkey>='0'&&*hexkey<='9') *t|=(*hexkey-'0')<<digit;
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else return 1;
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if (digit) digit=0; else {
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digit=4;
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t++;
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}
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hexkey++;
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}
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if (*hexkey) return 1;
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printf("DVD key (requested): %02X%02X%02X%02X%02X\n",key_title[0],key_title[1],key_title[2],key_title[3],key_title[4]);
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descrambling=1;
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return 0;
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}
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int dvd_auth ( char *dev , int fd )
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{
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int devfd; /* FD of DVD device */
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int lba;
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if ((devfd=open(dev,O_RDONLY))<0) {
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fprintf(stderr,"DVD: cannot open DVD device \"%s\".\n",dev);
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return 1;
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}
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if (!CSSisEncrypted(devfd)) {
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printf("DVD is unencrypted! Skipping authentication!\n(note: you should not use -dvd switch for unencrypted discs!)\n");
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return 0;
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} else printf("DVD is encrypted, issuing authentication ...\n");
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/* reset AGIDs */
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reset_agids(devfd);
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/* authenticate disc */
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if (CSSAuthDisc(devfd,key_disc)) {
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fprintf(stderr,"DVD: CSSAuthDisc() failed.\n");
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return 1;
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}
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/* authenticate title */
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lba=path_to_lba(fd);
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if (lba==-1) {
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fprintf(stderr,"DVD: path_to_lba() failed.\n");
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return 1;
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}
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if (CSSAuthTitle(devfd,key_title,lba)) {
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fprintf(stderr,"DVD: CSSAuthTitle() failed.\n");
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return 1;
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}
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/* decrypting title */
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if (CSSDecryptTitleKey (key_title, key_disc) < 0) {
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fprintf(stderr,"DVD: CSSDecryptTitleKey() failed.\n");
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return 1;
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}
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close(devfd);
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printf("DVD title key is: %02X%02X%02X%02X%02X\n",key_title[0],key_title[1],key_title[2],key_title[3],key_title[4]);
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descrambling=1;
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return 0;
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}
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#endif
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