1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/* (C)2001,2002 by LGB (Gabor Lenart), based on example programs in libcss
lgb@lgb.hu
This source is part of MPlayer project. This source is copyrighted by
the author according to rules declared in GNU/GPL license.
2001 Inital version (LGB)
2001 fibmap_mplayer to avoid uid=0 mplayer need (LGB)
2001 Support for libcss with the new API (by ???)
2002/Jan/04 Use dlopen to access libcss.so to avoid conflict with
libdvdread [now with only libcss with old API (LGB)
TODO:
support for libcss libraries with new API */
/* don't do anything with this source if css support was not requested */
#include "config.h"
#ifdef HAVE_LIBCSS
#warning FIXME: Dynamic loading of libcss.so with newer (ver>0.1) libcss API is not supported in this version!
#include <stdio.h>
#include <stdlib.h>
//#include <string.h> // FIXME: conflicts with fs.h
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/wait.h>
// #include <css.h>
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
# include <sys/dvdio.h>
#elif defined(__linux__)
# include <linux/cdrom.h>
#elif defined(__sun)
# include <sun/dvdio.h>
#else
# error "Need the DVD ioctls"
#endif
#include <dlfcn.h>
#include "dvdauth.h"
// #if OLD_CSS_API
/*
* provide some backward compatibiliy macros to compile this
* code using the old libcss-0.1
*/
#define DVDHandle int
#define DVDOpenFailed (-1)
#define DVDAuth(hdl, s) ioctl(hdl, DVD_AUTH, s)
#define DVDOpenDevice(path) open(path, O_RDONLY)
#define DVDCloseDevice(hdl) close(hdl)
// #define CSSDVDisEncrypted(hdl) CSSisEncrypted(hdl)
// #define CSSDVDAuthDisc CSSAuthDisc
char *dvd_auth_device=NULL;
char *dvd_device=NULL;
char *dvd_raw_device=NULL;
char *css_so=NULL;
unsigned char key_disc[2048];
unsigned char key_title[5];
unsigned char *dvdimportkey=NULL;
int descrambling=0;
static void *dlid;
static int (*dl_CSSisEncrypted)(int);
static int (*dl_CSSAuthDisc)(int,char *);
static int (*dl_CSSAuthTitle)(int, char *,int);
static int (*dl_CSSGetASF)(int);
static int (*dl_CSSDecryptTitleKey)(char *, char *);
static void (*dl_CSSDescramble)(u_char *, u_char *);
dvd_css_descramble ( u_char *sec , u_char *key )
{
(*dl_CSSDescramble)(sec,key);
}
#ifdef __linux__
#include <linux/fs.h>
#ifndef FIBMAP
#define FIBMAP 1
#endif
static int path_to_lba (char *path)
{
int lba = 0;
char cmd[100];
FILE *fp;
snprintf(cmd,sizeof(cmd),"fibmap_mplayer %s",path);
fp=popen(cmd,"r");
if (fp) {
int ret;
memset(cmd,0,sizeof(cmd));
fgets(cmd,99,fp);
// printf("DVD: cmd: %s\n",cmd);
if ((ret=pclose(fp)))
fprintf(stderr,"DVD: fibmap_mplayer: %s\n",*cmd?cmd:"no error info");
if (cmd[0]<'0'||cmd[0]>'9') fp=NULL; else {
if(WIFEXITED(ret) && !WEXITSTATUS(ret)) {
lba=atoi(cmd);
printf("DVD: fibmap_mplayer is being used\n");
} else
fp=NULL;
}
}
if (!fp) {
int fd;
printf("DVD: fibmap_mplayer could not run, trying with ioctl() ...\n");
if ((fd = open(path, O_RDONLY)) == -1) {
fprintf(stderr, "DVD: Cannot open file %s: %s",
path ? path : "(NULL)", strerror(errno));
return -1;
}
if (ioctl(fd, FIBMAP, &lba) != 0) {
perror("DVD: ioctl FIBMAP");
fprintf(stderr," Hint: run mplayer as root (or better to install fibmap_mplayer as suid root)!\n");
close(fd);
return -1;
}
close(fd);
}
printf("DVD: LBA: %d\n",lba);
return lba;
}
#else /*linux*/
static int path_to_lba (char *path)
{
#warning translating pathname to iso9660 LBA is not supported on this platform
fprintf(stderr, "DVD: Translating pathname to iso9660 LBA is not supported on this platform\n");
return -1;
}
#endif /*linux*/
static int CSSDVDAuthTitlePath(DVDHandle hdl,unsigned char *key_title,char *path)
{
int lba=path_to_lba(path);
if (lba==-1) return -1;
return (*dl_CSSAuthTitle)(hdl,key_title,lba);
}
static void reset_agids ( DVDHandle dvd )
{
dvd_authinfo ai;
int i;
for (i = 0; i < 4; i++) {
memset(&ai, 0, sizeof(ai));
ai.type = DVD_INVALIDATE_AGID;
ai.lsa.agid = i;
DVDAuth(dvd, &ai);
}
}
int dvd_import_key ( unsigned char *hexkey )
{
unsigned char *t=key_title;
int digit=4,len;
memset(key_title,0,sizeof(key_title));
// printf("DVD key: %s\n",hexkey);
for (len=0;len<10;len++) {
// printf("-> %c\n",*hexkey);
if (!*hexkey) return 1;
if (*hexkey>='A'&&*hexkey<='F') *t|=(*hexkey-'A'+10)<<digit;
else if (*hexkey>='0'&&*hexkey<='9') *t|=(*hexkey-'0')<<digit;
else return 1;
if (digit) digit=0; else {
digit=4;
t++;
}
hexkey++;
}
if (*hexkey) return 1;
printf("DVD: DVD key (requested): %02X%02X%02X%02X%02X\n",key_title[0],key_title[1],key_title[2],key_title[3],key_title[4]);
descrambling=1;
return 0;
}
int dvd_auth ( char *dev , char *filename )
{
DVDHandle dvd; /* DVD device handle */
if (!css_so) css_so=strdup("/usr/local/lib/libcss.so");
printf("DVD: opening libcss.so as %s ...\n",css_so);
dlid=dlopen(css_so,RTLD_NOW);
if (!dlid) {
printf("DVD: dlopen: %s\n",dlerror());
return 1;
} printf("DVD: dlopen OK!\n");
#define CSS_DLSYM(v,s) if (!(v=dlsym(dlid,s))) {\
fprintf(stderr,"DVD: %s\n Hint: use libcss version 0.1!\n",dlerror());\
return 1; }
CSS_DLSYM(dl_CSSisEncrypted,"CSSisEncrypted");
CSS_DLSYM(dl_CSSAuthDisc,"CSSAuthDisc");
CSS_DLSYM(dl_CSSAuthTitle,"CSSAuthTitle");
CSS_DLSYM(dl_CSSGetASF,"CSSGetASF");
CSS_DLSYM(dl_CSSDecryptTitleKey,"CSSDecryptTitleKey");
CSS_DLSYM(dl_CSSDescramble,"CSSDescramble");
#undef CSS_DLSYM
if ((dvd=DVDOpenDevice(dev)) == DVDOpenFailed) {
fprintf(stderr,"DVD: cannot open DVD device \"%s\": %s.\n",
dev, strerror(errno));
return 1;
}
if (!(*dl_CSSisEncrypted)(dvd)) {
printf("DVD: DVD is unencrypted! Skipping authentication!\n(note: you should not use -dvd switch for unencrypted discs!)\n");
DVDCloseDevice(dvd);
return 0;
} else printf("DVD: DVD is encrypted, issuing authentication ...\n");
/* reset AGIDs */
reset_agids(dvd);
/* authenticate disc */
if ((*dl_CSSAuthDisc)(dvd,key_disc)) {
fprintf(stderr,"DVD: CSSDVDAuthDisc() failed.\n");
DVDCloseDevice(dvd);
return 1;
}
if (CSSDVDAuthTitlePath(dvd,key_title,filename)) {
fprintf(stderr,"DVD: CSSDVDAuthTitle() failed.\n");
DVDCloseDevice(dvd);
return 1;
}
/* decrypting title */
if ((*dl_CSSDecryptTitleKey)(key_title, key_disc) < 0) {
fprintf(stderr,"DVD: CSSDecryptTitleKey() failed.\n");
DVDCloseDevice(dvd);
return 1;
}
DVDCloseDevice(dvd);
printf("DVD: 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]);
descrambling=1;
return 0;
}
#endif
|
