mirror of
https://github.com/martravi/wiiqt.git
synced 2024-06-16 07:28:49 +02:00
*ash class: slightly better error handling & memory management. should help fix/avoid some issues with buffer overflowing using the hardcoded buffer size from crediar's original code
This commit is contained in:
giantpune
parent
506aa591e5
commit
c96add47e3
110
WiiQt/ash.cpp
110
WiiQt/ash.cpp
|
|
@ -1,4 +1,8 @@
|
|||
#include "ash.h"
|
||||
|
||||
//this is large enough for all the system menu ash0 files, and thats all i need it for
|
||||
#define BUFFER_SIZE 0x600000
|
||||
|
||||
bool IsAshCompressed( const QByteArray ba )
|
||||
{
|
||||
return ba.startsWith( "ASH" );
|
||||
|
|
@ -6,6 +10,7 @@ bool IsAshCompressed( const QByteArray ba )
|
|||
|
||||
QByteArray DecryptAsh( const QByteArray ba )
|
||||
{
|
||||
//qDebug() << "DecryptAsh()";
|
||||
if( !IsAshCompressed( ba ) )
|
||||
{
|
||||
qWarning() << "DecryptAsh -> wrong magic";
|
||||
|
|
@ -16,27 +21,38 @@ QByteArray DecryptAsh( const QByteArray ba )
|
|||
quint32 t;
|
||||
|
||||
quint64 memAddr = (quint64)( ba.data() );//in
|
||||
r[4] = 0x80000000;
|
||||
r[4] = 0x8000000;
|
||||
qint64 inDiff = memAddr - r[ 4 ];//difference in r[ 4 ] and the real address. hack to support higher memory addresses than crediar's version
|
||||
|
||||
r[5] = 0x415348;
|
||||
r[6] = 0x415348;
|
||||
|
||||
//Rvl_decode_ash:
|
||||
//Rvl_decode_ash:
|
||||
|
||||
r[5] = qFromBigEndian(*(quint32 *)( r[4] + inDiff + 4 ) );
|
||||
r[5] = r[5] & 0x00FFFFFF;
|
||||
|
||||
quint32 size = r[5];
|
||||
//qDebug() << "Decompressed size:" << hex << size;
|
||||
if( size > BUFFER_SIZE )
|
||||
{
|
||||
qWarning() << "DecryptAsh(): this file was built with a buffer to small to deal with this archive. Build it with a bigger one and try again."
|
||||
<< hex << size << ">" << BUFFER_SIZE;
|
||||
return QByteArray();
|
||||
}
|
||||
|
||||
char crap2[ size ];
|
||||
quint64 memAddr2 = (quint64)( crap2 );//outbuf
|
||||
r[3] = 0x90000000;
|
||||
QByteArray crap2( size, '\0' );
|
||||
if( (quint32)crap2.size() != size )
|
||||
{
|
||||
qWarning() << "DecryptAsh(): out of memory 1";
|
||||
return QByteArray();
|
||||
}
|
||||
//char crap2[ size ];
|
||||
quint64 memAddr2 = (quint64)( crap2.data() );//outbuf
|
||||
r[3] = 0x9000000;
|
||||
qint64 outDiff = memAddr2 - r[ 3 ];//difference in r[ 3 ] and the real address
|
||||
|
||||
quint32 o = r[ 3 ];
|
||||
memset( (void*)( r[ 3 ] + outDiff ), 0, size );
|
||||
|
||||
r[24] = 0x10;
|
||||
r[28] = qFromBigEndian(*(quint32 *)(r[4]+8 + inDiff));
|
||||
|
|
@ -48,12 +64,18 @@ QByteArray DecryptAsh( const QByteArray ba )
|
|||
//r[8] = 0x8108<<16;
|
||||
//HACK, pointer to RAM
|
||||
|
||||
char crap3[ 0x100000 ];
|
||||
quint64 memAddr3 = (quint64)( crap3 );//outbuf
|
||||
QByteArray crap3( BUFFER_SIZE, '\0' );
|
||||
if( crap3.size() != BUFFER_SIZE )
|
||||
{
|
||||
qWarning() << "DecryptAsh(): out of memory 1";
|
||||
return QByteArray();
|
||||
}
|
||||
|
||||
//char crap3[ 0x100000 ];
|
||||
quint64 memAddr3 = (quint64)( crap3.data() );//outbuf
|
||||
r[8] = 0x84000000;
|
||||
qint64 outDiff2 = memAddr3 - r[ 8 ];//difference in r[ 3 ] and the real address
|
||||
memset( (void*)( r[8] + outDiff2 ), 0, 0x100000 );
|
||||
|
||||
r[8] = r[8];
|
||||
r[9] = r[8] + 0x07FE;
|
||||
r[10] = r[9] + 0x07FE;
|
||||
|
|
@ -63,7 +85,7 @@ QByteArray DecryptAsh( const QByteArray ba )
|
|||
r[22] = 0x200;
|
||||
r[27] = 0;
|
||||
|
||||
loc_81332124:
|
||||
loc_81332124:
|
||||
|
||||
if( r[25] != 0x1F )
|
||||
goto loc_81332140;
|
||||
|
|
@ -74,13 +96,13 @@ loc_81332124:
|
|||
r[24]= r[24] + 4;
|
||||
goto loc_8133214C;
|
||||
|
||||
loc_81332140:
|
||||
loc_81332140:
|
||||
|
||||
r[0] = r[26] >> 31;
|
||||
r[25]= r[25] + 1;
|
||||
r[26]= r[26] << 1;
|
||||
|
||||
loc_8133214C:
|
||||
loc_8133214C:
|
||||
|
||||
if( r[0] == 0 )
|
||||
goto loc_81332174;
|
||||
|
|
@ -97,7 +119,7 @@ loc_8133214C:
|
|||
|
||||
goto loc_81332124;
|
||||
|
||||
loc_81332174:
|
||||
loc_81332174:
|
||||
|
||||
r[12] = 9;
|
||||
r[21] = r[25] + r[12];
|
||||
|
|
@ -114,14 +136,14 @@ loc_81332174:
|
|||
r[25] = r[25] + r[12];
|
||||
goto loc_813321D0;
|
||||
|
||||
loc_8133219C:
|
||||
loc_8133219C:
|
||||
|
||||
r[26]= qFromBigEndian(*(quint32 *)(r[4] + r[24] + inDiff));
|
||||
r[25]= 0;
|
||||
r[24]= r[24] + 4;
|
||||
goto loc_813321D0;
|
||||
|
||||
loc_813321AC:
|
||||
loc_813321AC:
|
||||
|
||||
r[0] = (~(r[12] - 0x20))+1;
|
||||
r[6] = r[26] >> r[0];
|
||||
|
|
@ -133,7 +155,7 @@ loc_813321AC:
|
|||
r[25] = r[21] - 0x20;
|
||||
r[26] = r[26] << r[25];
|
||||
|
||||
loc_813321D0:
|
||||
loc_813321D0:
|
||||
|
||||
r[12]= (quint16)qFromBigEndian((quint16)(*(quint16 *)(( r[31] + outDiff2 ) - 2)));
|
||||
r[31] -= 2;
|
||||
|
|
@ -150,18 +172,18 @@ loc_813321D0:
|
|||
|
||||
goto loc_81332204;
|
||||
|
||||
loc_813321F8:
|
||||
loc_813321F8:
|
||||
|
||||
*(quint16 *)(r[8]+r[12] + outDiff2) = (quint16)qFromBigEndian((quint16)r[6]);
|
||||
r[23] = r[22];
|
||||
goto loc_81332124;
|
||||
|
||||
loc_81332204:
|
||||
loc_81332204:
|
||||
|
||||
r[23] = 0x800;
|
||||
r[22] = 0x800;
|
||||
|
||||
loc_8133220C:
|
||||
loc_8133220C:
|
||||
|
||||
if( r[29] != 0x1F )
|
||||
goto loc_81332228;
|
||||
|
|
@ -172,13 +194,13 @@ loc_8133220C:
|
|||
r[28]= r[28] + 4;
|
||||
goto loc_81332234;
|
||||
|
||||
loc_81332228:
|
||||
loc_81332228:
|
||||
|
||||
r[0] = r[30] >> 31;
|
||||
r[29]= r[29] + 1;
|
||||
r[30]= r[30] << 1;
|
||||
|
||||
loc_81332234:
|
||||
loc_81332234:
|
||||
|
||||
if( r[0] == 0 )
|
||||
goto loc_8133225C;
|
||||
|
|
@ -195,7 +217,7 @@ loc_81332234:
|
|||
|
||||
goto loc_8133220C;
|
||||
|
||||
loc_8133225C:
|
||||
loc_8133225C:
|
||||
|
||||
r[12] = 0xB;
|
||||
r[21] = r[29] + r[12];
|
||||
|
|
@ -212,14 +234,14 @@ loc_8133225C:
|
|||
r[29] = r[29] + r[12];
|
||||
goto loc_813322B8;
|
||||
|
||||
loc_81332284:
|
||||
loc_81332284:
|
||||
|
||||
r[30]= qFromBigEndian(*(quint32 *)(r[4] + r[28] + inDiff));
|
||||
r[29]= 0;
|
||||
r[28]= r[28] + 4;
|
||||
goto loc_813322B8;
|
||||
|
||||
loc_81332294:
|
||||
loc_81332294:
|
||||
|
||||
r[0] = (~(r[12] - 0x20))+1;
|
||||
r[7] = r[30] >> r[0];
|
||||
|
|
@ -231,7 +253,7 @@ loc_81332294:
|
|||
r[29]= r[21] - 0x20;
|
||||
r[30]= r[30] << r[29];
|
||||
|
||||
loc_813322B8:
|
||||
loc_813322B8:
|
||||
|
||||
r[12]= (quint16)qFromBigEndian((quint16)(*(quint16 *)((r[31] + outDiff2 ) - 2)));
|
||||
r[31] -= 2;
|
||||
|
|
@ -248,21 +270,21 @@ loc_813322B8:
|
|||
|
||||
goto loc_813322EC;
|
||||
|
||||
loc_813322E0:
|
||||
loc_813322E0:
|
||||
|
||||
*(quint16 *)(r[10]+r[12] + outDiff2 ) = (quint16)qFromBigEndian((quint16)r[7]);
|
||||
r[23] = r[22];
|
||||
goto loc_8133220C;
|
||||
|
||||
loc_813322EC:
|
||||
loc_813322EC:
|
||||
|
||||
r[0] = r[5];
|
||||
|
||||
loc_813322F0:
|
||||
loc_813322F0:
|
||||
|
||||
r[12]= r[6];
|
||||
|
||||
loc_813322F4:
|
||||
loc_813322F4:
|
||||
|
||||
if( r[12] < 0x200 )
|
||||
goto loc_8133233C;
|
||||
|
|
@ -276,13 +298,13 @@ loc_813322F4:
|
|||
r[25] = 0;
|
||||
goto loc_81332324;
|
||||
|
||||
loc_81332318:
|
||||
loc_81332318:
|
||||
|
||||
r[31] = r[26] >> 31;
|
||||
r[25] = r[25] + 1;
|
||||
r[26] = r[26] << 1;
|
||||
|
||||
loc_81332324:
|
||||
loc_81332324:
|
||||
|
||||
r[27] = r[12] << 1;
|
||||
if( r[31] != 0 )
|
||||
|
|
@ -291,12 +313,12 @@ loc_81332324:
|
|||
r[12] = (quint16)qFromBigEndian((quint16)(*(quint16 *)(r[8] + r[27] + outDiff2 )));
|
||||
goto loc_813322F4;
|
||||
|
||||
loc_81332334:
|
||||
loc_81332334:
|
||||
|
||||
r[12] = (quint16)qFromBigEndian((quint16)(*(quint16 *)(r[9] + r[27] + outDiff2 )));
|
||||
goto loc_813322F4;
|
||||
|
||||
loc_8133233C:
|
||||
loc_8133233C:
|
||||
|
||||
if( r[12] >= 0x100 )
|
||||
goto loc_8133235C;
|
||||
|
|
@ -309,11 +331,11 @@ loc_8133233C:
|
|||
|
||||
goto loc_81332434;
|
||||
|
||||
loc_8133235C:
|
||||
loc_8133235C:
|
||||
|
||||
r[23] = r[7];
|
||||
|
||||
loc_81332360:
|
||||
loc_81332360:
|
||||
|
||||
if( r[23] < 0x800 )
|
||||
goto loc_813323A8;
|
||||
|
|
@ -327,13 +349,13 @@ loc_81332360:
|
|||
r[29] = 0;
|
||||
goto loc_81332390;
|
||||
|
||||
loc_81332384:
|
||||
loc_81332384:
|
||||
|
||||
r[31] = r[30] >> 31;
|
||||
r[29] = r[29] + 1;
|
||||
r[30] = r[30] << 1;
|
||||
|
||||
loc_81332390:
|
||||
loc_81332390:
|
||||
|
||||
r[27] = r[23] << 1;
|
||||
if( r[31] != 0 )
|
||||
|
|
@ -342,12 +364,12 @@ loc_81332390:
|
|||
r[23] = (quint16)qFromBigEndian((quint16)(*(quint16 *)(r[10] + r[27] + outDiff2 )));
|
||||
goto loc_81332360;
|
||||
|
||||
loc_813323A0:
|
||||
loc_813323A0:
|
||||
|
||||
r[23] = (quint16)qFromBigEndian((quint16)(*(quint16 *)(r[11] + r[27] + outDiff2 )));
|
||||
goto loc_81332360;
|
||||
|
||||
loc_813323A8:
|
||||
loc_813323A8:
|
||||
|
||||
r[12] = r[12] - 0xFD;
|
||||
r[23] = ~r[23] + r[3] + 1;
|
||||
|
|
@ -359,7 +381,7 @@ loc_813323A8:
|
|||
|
||||
count = r[31];
|
||||
|
||||
loc_813323C0:
|
||||
loc_813323C0:
|
||||
|
||||
r[31] = *(quint8 *)(( r[23] + outDiff ) - 1);
|
||||
*(quint8 *)(r[3] + outDiff) = r[31];
|
||||
|
|
@ -395,11 +417,11 @@ loc_813323C0:
|
|||
if( r[12] == 0 )
|
||||
goto loc_8133242C;
|
||||
|
||||
loc_81332414:
|
||||
loc_81332414:
|
||||
|
||||
count = r[12];
|
||||
|
||||
loc_81332418:
|
||||
loc_81332418:
|
||||
|
||||
r[31] = *(quint8 *)(( r[23] + outDiff ) - 1);
|
||||
r[23] = r[23] + 1;
|
||||
|
|
@ -409,12 +431,12 @@ loc_81332418:
|
|||
if( --count )
|
||||
goto loc_81332418;
|
||||
|
||||
loc_8133242C:
|
||||
loc_8133242C:
|
||||
|
||||
if( r[5] != 0 )
|
||||
goto loc_813322F0;
|
||||
|
||||
loc_81332434:
|
||||
loc_81332434:
|
||||
|
||||
r[3] = r[0];
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user