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gst/realmedia/: Split out hash code in separate file.

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Original commit message from CVS:
* gst/realmedia/Makefile.am:
* gst/realmedia/realhash.c: (hash), (call_hash),
(gst_rtsp_ext_real_calc_response_and_checksum):
* gst/realmedia/realhash.h:
* gst/realmedia/rtspreal.c: (rtsp_ext_real_get_transports),
(rtsp_ext_real_after_send), (rtsp_ext_real_stream_select):
Split out hash code in separate file.
This commit is contained in:
Wim Taymans 2007-07-27 16:39:45 +00:00
parent c8bd2c02a3
commit 068185d02a
5 changed files with 380 additions and 308 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2007-07-27 Wim Taymans <wim.taymans@gmail.com>
* gst/realmedia/Makefile.am:
* gst/realmedia/realhash.c: (hash), (call_hash),
(gst_rtsp_ext_real_calc_response_and_checksum):
* gst/realmedia/realhash.h:
* gst/realmedia/rtspreal.c: (rtsp_ext_real_get_transports),
(rtsp_ext_real_after_send), (rtsp_ext_real_stream_select):
Split out hash code in separate file.
2007-07-27 Wim Taymans <wim.taymans@gmail.com>
* gst/asfdemux/Makefile.am:

4
gst/realmedia/Makefile.am
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@ -1,10 +1,10 @@
plugin_LTLIBRARIES = libgstrmdemux.la
libgstrmdemux_la_SOURCES = rademux.c rmdemux.c rmutils.c rdtdepay.c rtspreal.c
libgstrmdemux_la_SOURCES = rademux.c rmdemux.c rmutils.c rdtdepay.c rtspreal.c realhash.c
libgstrmdemux_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS)
libgstrmdemux_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_LIBS)\
-lgstrtsp-@GST_MAJORMINOR@ -lgstsdp-@GST_MAJORMINOR@
libgstrmdemux_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = rademux.h rmdemux.h rmutils.h rdtdepay.h rtspreal.h
noinst_HEADERS = rademux.h rmdemux.h rmutils.h rdtdepay.h rtspreal.h realhash.h

330
gst/realmedia/realhash.c Normal file
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@ -0,0 +1,330 @@
/* GStreamer
* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* Element-Checklist-Version: 5 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include <string.h>
#include <gst/gst.h>
#include "realhash.h"
void rtsp_ext_real_calc_response_and_checksum (char *response,
char *chksum, char *challenge);
/*
* The following code has been copied from
* xine-lib-1.1.1/src/input/libreal/real.c.
*/
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define be2me_32(x) GUINT32_SWAP_LE_BE(x)
#define le2me_32(x) (x)
#else
#define le2me_32(x) GUINT32_SWAP_LE_BE(x)
#define be2me_32(x) (x)
#endif
#define ALE_32(x) (le2me_32(*(uint32_t*)(x)))
#define LE_32(x) ALE_32(x)
static const unsigned char xor_table[] = {
0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
0x10, 0x57, 0x05, 0x18, 0x54, 0x00, 0x00, 0x00
};
#define BE_32C(x,y) do { *(uint32_t *)(x) = be2me_32((y)); } while(0)
#define LE_32C(x,y) do { *(uint32_t *)(x) = le2me_32((y)); } while(0)
static void
hash (char *field, char *param)
{
uint32_t a, b, c, d;
/* fill variables */
a = LE_32 (field);
b = LE_32 (field + 4);
c = LE_32 (field + 8);
d = LE_32 (field + 12);
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x00)) + a - 0x28955B88;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x04)) + d - 0x173848AA;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x08)) + c + 0x242070DB;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x0c)) + b - 0x3E423112;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x10)) + a - 0x0A83F051;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x14)) + d + 0x4787C62A;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x18)) + c - 0x57CFB9ED;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x1c)) + b - 0x02B96AFF;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x20)) + a + 0x698098D8;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x24)) + d - 0x74BB0851;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x28)) + c - 0x0000A44F;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x2C)) + b - 0x76A32842;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x30)) + a + 0x6B901122;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x34)) + d - 0x02678E6D;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x38)) + c - 0x5986BC72;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x3c)) + b + 0x49B40821;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x04)) + a - 0x09E1DA9E;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x18)) + d - 0x3FBF4CC0;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x2c)) + c + 0x265E5A51;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x00)) + b - 0x16493856;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x14)) + a - 0x29D0EFA3;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x28)) + d + 0x02441453;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x3c)) + c - 0x275E197F;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x10)) + b - 0x182C0438;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x24)) + a + 0x21E1CDE6;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x38)) + d - 0x3CC8F82A;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x0c)) + c - 0x0B2AF279;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x20)) + b + 0x455A14ED;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x34)) + a - 0x561C16FB;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x08)) + d - 0x03105C08;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x1c)) + c + 0x676F02D9;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x30)) + b - 0x72D5B376;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x14)) + a - 0x0005C6BE;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x20)) + d - 0x788E097F;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x2c)) + c + 0x6D9D6122;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x38)) + b - 0x021AC7F4;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x04)) + a - 0x5B4115BC;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x10)) + d + 0x4BDECFA9;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x1c)) + c - 0x0944B4A0;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x28)) + b - 0x41404390;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x34)) + a + 0x289B7EC6;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x00)) + d - 0x155ED806;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x0c)) + c - 0x2B10CF7B;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x18)) + b + 0x04881D05;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x24)) + a - 0x262B2FC7;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x30)) + d - 0x1924661B;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x3c)) + c + 0x1fa27cf8;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x08)) + b - 0x3B53A99B;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x00)) + a - 0x0BD6DDBC;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x1c)) + d + 0x432AFF97;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x38)) + c - 0x546BDC59;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x14)) + b - 0x036C5FC7;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x30)) + a + 0x655B59C3;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x0C)) + d - 0x70F3336E;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x28)) + c - 0x00100B83;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x04)) + b - 0x7A7BA22F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x20)) + a + 0x6FA87E4F;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x3c)) + d - 0x01D31920;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x18)) + c - 0x5CFEBCEC;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x34)) + b + 0x4E0811A1;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x10)) + a - 0x08AC817E;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x2c)) + d - 0x42C50DCB;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x08)) + c + 0x2AD7D2BB;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x24)) + b - 0x14792C6F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a += LE_32 (field);
b += LE_32 (field + 4);
c += LE_32 (field + 8);
d += LE_32 (field + 12);
LE_32C (field, a);
LE_32C (field + 4, b);
LE_32C (field + 8, c);
LE_32C (field + 12, d);
}
static void
call_hash (char *key, char *challenge, int len)
{
uint8_t *ptr1, *ptr2;
uint32_t a, b, c, d, tmp;
ptr1 = (uint8_t *) (key + 16);
ptr2 = (uint8_t *) (key + 20);
a = LE_32 (ptr1);
b = (a >> 3) & 0x3f;
a += len * 8;
LE_32C (ptr1, a);
if (a < (len << 3))
ptr2 += 4;
tmp = LE_32 (ptr2) + (len >> 0x1d);
LE_32C (ptr2, tmp);
a = 64 - b;
c = 0;
if (a <= len) {
memcpy (key + b + 24, challenge, a);
hash (key, key + 24);
c = a;
d = c + 0x3f;
while (d < len) {
hash (key, challenge + d - 0x3f);
d += 64;
c += 64;
}
b = 0;
}
memcpy (key + b + 24, challenge + c, len - c);
}
void
gst_rtsp_ext_real_calc_response_and_checksum (char *response, char *chksum,
char *challenge)
{
int ch_len, table_len, resp_len;
int i;
char *ptr;
char buf[128];
char field[128];
char zres[20];
char buf1[128];
char buf2[128];
/* initialize return values */
memset (response, 0, 64);
memset (chksum, 0, 34);
/* initialize buffer */
memset (buf, 0, 128);
ptr = buf;
BE_32C (ptr, 0xa1e9149d);
ptr += 4;
BE_32C (ptr, 0x0e6b3b59);
ptr += 4;
if ((ch_len = MIN (strlen (challenge), 56)) == 40) {
challenge[32] = 0;
ch_len = 32;
}
memcpy (ptr, challenge, ch_len);
/* xor challenge bytewise with xor_table */
table_len = MIN (strlen ((char *) xor_table), 56);
for (i = 0; i < table_len; i++)
ptr[i] = ptr[i] ^ xor_table[i];
/* initialize our field */
BE_32C (field, 0x01234567);
BE_32C (field + 4, 0x89ABCDEF);
BE_32C (field + 8, 0xFEDCBA98);
BE_32C (field + 12, 0x76543210);
BE_32C (field + 16, 0x00000000);
BE_32C (field + 20, 0x00000000);
/* calculate response */
call_hash (field, buf, 64);
memset (buf1, 0, 64);
*buf1 = 128;
memcpy (buf2, field + 16, 8);
i = (LE_32 ((buf2)) >> 3) & 0x3f;
if (i < 56)
i = 56 - i;
else
i = 120 - i;
call_hash (field, buf1, i);
call_hash (field, buf2, 8);
memcpy (zres, field, 16);
/* convert zres to ascii string */
for (i = 0; i < 16; i++) {
char a, b;
a = (zres[i] >> 4) & 15;
b = zres[i] & 15;
response[i * 2] = ((a < 10) ? (a + 48) : (a + 87)) & 255;
response[i * 2 + 1] = ((b < 10) ? (b + 48) : (b + 87)) & 255;
}
/* add tail */
resp_len = strlen (response);
strcpy (&response[resp_len], "01d0a8e3");
/* calculate checksum */
for (i = 0; i < resp_len / 4; i++)
chksum[i] = response[i * 4];
}

31
gst/realmedia/realhash.h Normal file
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@ -0,0 +1,31 @@
/* GStreamer
* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_RTSP_HASH_H__
#define __GST_RTSP_HASH_H__
G_BEGIN_DECLS
void
gst_rtsp_ext_real_calc_response_and_checksum (char *response, char *chksum,
char *challenge);
G_END_DECLS
#endif /* __GST_RTSP_HASH_H__ */

313
gst/realmedia/rtspreal.c
View file

@ -40,6 +40,7 @@
#include <gst/rtsp/gstrtspextension.h>
#include <gst/rtsp/gstrtspbase64.h>
#include "realhash.h"
#include "rtspreal.h"
GST_DEBUG_CATEGORY_STATIC (rtspreal_debug);
@ -54,9 +55,6 @@ GST_ELEMENT_DETAILS ("RealMedia RTSP Extension",
#define SERVER_PREFIX "RealServer"
static void rtsp_ext_real_calc_response_and_checksum (char *response,
char *chksum, char *challenge);
static GstRTSPResult
rtsp_ext_real_get_transports (GstRTSPExtension * ext,
GstRTSPLowerTrans protocols, gchar ** transport)
@ -67,6 +65,8 @@ rtsp_ext_real_get_transports (GstRTSPExtension * ext,
if (!ctx->isreal)
return GST_RTSP_OK;
GST_DEBUG_OBJECT (ext, "generating transports for %d", protocols);
str = g_string_new ("");
if (protocols & GST_RTSP_LOWER_TRANS_UDP_MCAST) {
@ -163,7 +163,7 @@ rtsp_ext_real_after_send (GstRTSPExtension * ext, GstRTSPMessage * req,
if (!challenge1)
goto no_challenge1;
rtsp_ext_real_calc_response_and_checksum (ctx->challenge2,
gst_rtsp_ext_real_calc_response_and_checksum (ctx->challenge2,
ctx->checksum, challenge1);
break;
}
@ -181,307 +181,6 @@ no_challenge1:
}
}
/*
* The following code has been copied from
* xine-lib-1.1.1/src/input/libreal/real.c.
*/
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define be2me_32(x) GUINT32_SWAP_LE_BE(x)
#define le2me_32(x) (x)
#else
#define le2me_32(x) GUINT32_SWAP_LE_BE(x)
#define be2me_32(x) (x)
#endif
#define ALE_32(x) (le2me_32(*(uint32_t*)(x)))
#define LE_32(x) ALE_32(x)
static const unsigned char xor_table[] = {
0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
0x10, 0x57, 0x05, 0x18, 0x54, 0x00, 0x00, 0x00
};
#define BE_32C(x,y) do { *(uint32_t *)(x) = be2me_32((y)); } while(0)
#define LE_32C(x,y) do { *(uint32_t *)(x) = le2me_32((y)); } while(0)
static void
hash (char *field, char *param)
{
uint32_t a, b, c, d;
/* fill variables */
a = LE_32 (field);
b = LE_32 (field + 4);
c = LE_32 (field + 8);
d = LE_32 (field + 12);
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x00)) + a - 0x28955B88;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x04)) + d - 0x173848AA;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x08)) + c + 0x242070DB;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x0c)) + b - 0x3E423112;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x10)) + a - 0x0A83F051;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x14)) + d + 0x4787C62A;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x18)) + c - 0x57CFB9ED;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x1c)) + b - 0x02B96AFF;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x20)) + a + 0x698098D8;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x24)) + d - 0x74BB0851;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x28)) + c - 0x0000A44F;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x2C)) + b - 0x76A32842;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + LE_32 ((param + 0x30)) + a + 0x6B901122;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + LE_32 ((param + 0x34)) + d - 0x02678E6D;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + LE_32 ((param + 0x38)) + c - 0x5986BC72;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + LE_32 ((param + 0x3c)) + b + 0x49B40821;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x04)) + a - 0x09E1DA9E;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x18)) + d - 0x3FBF4CC0;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x2c)) + c + 0x265E5A51;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x00)) + b - 0x16493856;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x14)) + a - 0x29D0EFA3;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x28)) + d + 0x02441453;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x3c)) + c - 0x275E197F;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x10)) + b - 0x182C0438;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x24)) + a + 0x21E1CDE6;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x38)) + d - 0x3CC8F82A;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x0c)) + c - 0x0B2AF279;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x20)) + b + 0x455A14ED;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + LE_32 ((param + 0x34)) + a - 0x561C16FB;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + LE_32 ((param + 0x08)) + d - 0x03105C08;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + LE_32 ((param + 0x1c)) + c + 0x676F02D9;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + LE_32 ((param + 0x30)) + b - 0x72D5B376;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x14)) + a - 0x0005C6BE;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x20)) + d - 0x788E097F;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x2c)) + c + 0x6D9D6122;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x38)) + b - 0x021AC7F4;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x04)) + a - 0x5B4115BC;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x10)) + d + 0x4BDECFA9;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x1c)) + c - 0x0944B4A0;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x28)) + b - 0x41404390;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x34)) + a + 0x289B7EC6;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x00)) + d - 0x155ED806;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x0c)) + c - 0x2B10CF7B;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x18)) + b + 0x04881D05;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + LE_32 ((param + 0x24)) + a - 0x262B2FC7;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + LE_32 ((param + 0x30)) + d - 0x1924661B;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + LE_32 ((param + 0x3c)) + c + 0x1fa27cf8;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + LE_32 ((param + 0x08)) + b - 0x3B53A99B;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x00)) + a - 0x0BD6DDBC;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x1c)) + d + 0x432AFF97;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x38)) + c - 0x546BDC59;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x14)) + b - 0x036C5FC7;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x30)) + a + 0x655B59C3;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x0C)) + d - 0x70F3336E;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x28)) + c - 0x00100B83;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x04)) + b - 0x7A7BA22F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x20)) + a + 0x6FA87E4F;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x3c)) + d - 0x01D31920;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x18)) + c - 0x5CFEBCEC;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x34)) + b + 0x4E0811A1;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + LE_32 ((param + 0x10)) + a - 0x08AC817E;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + LE_32 ((param + 0x2c)) + d - 0x42C50DCB;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + LE_32 ((param + 0x08)) + c + 0x2AD7D2BB;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + LE_32 ((param + 0x24)) + b - 0x14792C6F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a += LE_32 (field);
b += LE_32 (field + 4);
c += LE_32 (field + 8);
d += LE_32 (field + 12);
LE_32C (field, a);
LE_32C (field + 4, b);
LE_32C (field + 8, c);
LE_32C (field + 12, d);
}
static void
call_hash (char *key, char *challenge, int len)
{
uint8_t *ptr1, *ptr2;
uint32_t a, b, c, d, tmp;
ptr1 = (uint8_t *) (key + 16);
ptr2 = (uint8_t *) (key + 20);
a = LE_32 (ptr1);
b = (a >> 3) & 0x3f;
a += len * 8;
LE_32C (ptr1, a);
if (a < (len << 3))
ptr2 += 4;
tmp = LE_32 (ptr2) + (len >> 0x1d);
LE_32C (ptr2, tmp);
a = 64 - b;
c = 0;
if (a <= len) {
memcpy (key + b + 24, challenge, a);
hash (key, key + 24);
c = a;
d = c + 0x3f;
while (d < len) {
hash (key, challenge + d - 0x3f);
d += 64;
c += 64;
}
b = 0;
}
memcpy (key + b + 24, challenge + c, len - c);
}
static void
rtsp_ext_real_calc_response_and_checksum (char *response, char *chksum,
char *challenge)
{
int ch_len, table_len, resp_len;
int i;
char *ptr;
char buf[128];
char field[128];
char zres[20];
char buf1[128];
char buf2[128];
/* initialize return values */
memset (response, 0, 64);
memset (chksum, 0, 34);
/* initialize buffer */
memset (buf, 0, 128);
ptr = buf;
BE_32C (ptr, 0xa1e9149d);
ptr += 4;
BE_32C (ptr, 0x0e6b3b59);
ptr += 4;
if ((ch_len = MIN (strlen (challenge), 56)) == 40) {
challenge[32] = 0;
ch_len = 32;
}
memcpy (ptr, challenge, ch_len);
/* xor challenge bytewise with xor_table */
table_len = MIN (strlen ((char *) xor_table), 56);
for (i = 0; i < table_len; i++)
ptr[i] = ptr[i] ^ xor_table[i];
/* initialize our field */
BE_32C (field, 0x01234567);
BE_32C (field + 4, 0x89ABCDEF);
BE_32C (field + 8, 0xFEDCBA98);
BE_32C (field + 12, 0x76543210);
BE_32C (field + 16, 0x00000000);
BE_32C (field + 20, 0x00000000);
/* calculate response */
call_hash (field, buf, 64);
memset (buf1, 0, 64);
*buf1 = 128;
memcpy (buf2, field + 16, 8);
i = (LE_32 ((buf2)) >> 3) & 0x3f;
if (i < 56)
i = 56 - i;
else
i = 120 - i;
call_hash (field, buf1, i);
call_hash (field, buf2, 8);
memcpy (zres, field, 16);
/* convert zres to ascii string */
for (i = 0; i < 16; i++) {
char a, b;
a = (zres[i] >> 4) & 15;
b = zres[i] & 15;
response[i * 2] = ((a < 10) ? (a + 48) : (a + 87)) & 255;
response[i * 2 + 1] = ((b < 10) ? (b + 48) : (b + 87)) & 255;
}
/* add tail */
resp_len = strlen (response);
strcpy (&response[resp_len], "01d0a8e3");
/* calculate checksum */
for (i = 0; i < resp_len / 4; i++)
chksum[i] = response[i * 4];
}
/*
* Stop xine code
*/
#define ENSURE_SIZE(size) \
G_STMT_START { \
while (data_len < size) { \
@ -860,7 +559,9 @@ rtsp_ext_real_stream_select (GstRTSPExtension * ext, GstRTSPUrl * url)
gst_rtsp_message_add_header (&request, GST_RTSP_HDR_SUBSCRIBE,
//"stream=0;rule=5,stream=0;rule=6,stream=1;rule=0,stream=1;rule=1");
//"stream=0;rule=0,stream=0;rule=1,stream=1;rule=0,stream=1;rule=1");
"stream=0;rule=0,stream=0;rule=1");
//"stream=0;rule=5,stream=0;rule=6,stream=1;rule=2,stream=1;rule=3");
"stream=0;rule=5,stream=0;rule=6,stream=1;rule=0,stream=1;rule=1");
//"stream=0;rule=0,stream=0;rule=1");
/* send SET_PARAMETER */
if ((res = gst_rtsp_extension_send (ext, &request, &response)) < 0)