mirror of
https://github.com/mpv-player/mpv
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1ef79e9f00
why the open has failed. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1511 b3059339-0415-0410-9bf9-f77b7e298cf2
230 lines
5.5 KiB
C
230 lines
5.5 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 <string.h> // FIXME: conflicts with fs.h
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#include <errno.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 <sys/wait.h>
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#include <css.h>
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#if CSS_MAJOR_VERSION > 0 || (CSS_MAJOR_VERSION == 0 && CSS_MINOR_VERSION > 1)
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# include <dvd.h>
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# undef OLD_CSS_API
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#else
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# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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# include <sys/dvdio.h>
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# elif defined(__linux__)
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# include <linux/cdrom.h>
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# elif defined(__sun)
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# include <sun/dvdio.h>
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# else
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# error "Need the DVD ioctls"
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# endif
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# define OLD_CSS_API 1
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#endif
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#include "dvdauth.h"
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#if OLD_CSS_API
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/*
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* provide some backward compatibiliy macros to compile this
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* code using the old libcss-0.1
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*/
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#define DVDHandle int
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#define DVDOpenFailed (-1)
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#define DVDAuth(hdl, s) ioctl(hdl, DVD_AUTH, s)
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#define DVDOpenDevice(path) open(path, O_RDONLY)
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#define DVDCloseDevice(hdl) close(hdl)
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#define CSSDVDisEncrypted(hdl) CSSisEncrypted(hdl)
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#define CSSDVDAuthDisc CSSAuthDisc
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/* Arghhh! Please think before you commit! You forget to check the return
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value of path_to_lba (-1 for error) in this way ... - LGB */
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//#define CSSDVDAuthTitlePath(hdl,key_title,path) \
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// CSSAuthTitle(hdl,key_title,path_to_lba(path))
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#else /*OLD_CSS_API*/
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#define DVDHandle struct dvd_device *
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#define DVDOpenFailed NULL
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#endif /*OLD_CSS_API*/
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char *dvd_auth_device=NULL;
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char *dvd_device=NULL;
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char *dvd_raw_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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#if OLD_CSS_API
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/*
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* With the old libcss-0.1 api, we have to find out the LBA for
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* a title for title authentication.
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*/
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#ifdef __linux__
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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 (char *path)
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{
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int lba = 0;
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char cmd[100];
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FILE *fp;
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snprintf(cmd,sizeof(cmd),"fibmap_mplayer %s",path);
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fp=popen(cmd,"r");
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if (fp) {
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int ret;
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bzero(cmd,sizeof(cmd));
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fgets(cmd,99,fp);
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if ((ret=pclose(fp)))
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fprintf(stderr,"fibmap_mplayer: %s\n",*cmd?cmd:"no error info");
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if(WIFEXITED(ret) && !WEXITSTATUS(ret))
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lba=atoi(cmd);
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else
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fp=NULL;
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}
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if (!fp) {
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int fd;
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printf("fibmap_mplayer could not run, trying with ioctl() ...\n");
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if ((fd = open(path, O_RDONLY)) == -1) {
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fprintf(stderr, "Cannot open file %s: %s",
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path ? path : "(NULL)", strerror(errno));
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return -1;
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}
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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 (or better to install fibmap_mplayer as suid root)!\n");
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close(fd);
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return -1;
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}
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close(fd);
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}
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printf("LBA: %d\n",lba);
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return lba;
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}
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int CSSDVDAuthTitlePath(DVDHandle hdl,unsigned char *key_title,char *path)
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{
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int lba=path_to_lba(path);
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if (lba==-1) return -1;
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return CSSAuthTitle(hdl,key_title,lba);
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}
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#else /*linux*/
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static int path_to_lba (char *path)
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{
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#warning translating pathname to iso9660 LBA is not supported on this platform
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fprintf(stderr, "Translating pathname to iso9660 LBA is not supported on this platform\n");
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return -1;
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}
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#endif /*linux*/
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#endif /*OLD_CSS_API*/
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static void reset_agids ( DVDHandle dvd )
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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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DVDAuth(dvd, &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 , char *filename )
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{
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DVDHandle dvd; /* DVD device handle */
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if ((dvd=DVDOpenDevice(dev)) == DVDOpenFailed) {
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fprintf(stderr,"DVD: cannot open DVD device \"%s\": %s.\n",
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dev, strerror(errno));
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return 1;
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}
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if (!CSSDVDisEncrypted(dvd)) {
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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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DVDCloseDevice(dvd);
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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(dvd);
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/* authenticate disc */
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if (CSSDVDAuthDisc(dvd,key_disc)) {
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fprintf(stderr,"DVD: CSSDVDAuthDisc() failed.\n");
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DVDCloseDevice(dvd);
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return 1;
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}
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if (CSSDVDAuthTitlePath(dvd,key_title,filename)) {
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fprintf(stderr,"DVD: CSSDVDAuthTitle() failed.\n");
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DVDCloseDevice(dvd);
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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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DVDCloseDevice(dvd);
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return 1;
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}
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DVDCloseDevice(dvd);
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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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