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Unreal packages are a fucking mess ahahahahahaha.

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I really should just merge together all the extractors for modern packages.
This commit is contained in:
Marisa the Magician 2019-12-12 20:16:57 +01:00
commit 71bca23b6e
4 changed files with 214 additions and 127 deletions
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72
umxunpack.c
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@ -130,7 +130,7 @@ int32_t readimport( void )
{
readindex();
readindex();
if ( head->pkgver >= 60 ) fpos += 4;
if ( head->pkgver >= 55 ) fpos += 4;
else readindex();
return readindex();
}
@ -150,7 +150,7 @@ void readexport( int32_t *class, int32_t *ofs, int32_t *siz, int32_t *name )
{
*class = readindex();
readindex();
if ( head->pkgver >= 60 ) fpos += 4;
if ( head->pkgver >= 55 ) fpos += 4;
*name = readindex();
fpos += 4;
*siz = readindex();
@ -280,12 +280,72 @@ int main( int argc, char **argv )
// begin reading data
size_t prev = fpos;
fpos = ofs;
if ( head->pkgver < 40 ) fpos += 8;
if ( head->pkgver < 60 ) fpos += 16;
if ( head->pkgver < 45 ) fpos += 4;
if ( head->pkgver < 55 ) fpos += 16;
if ( head->pkgver <= 44 ) fpos -= 6; // ???
if ( head->pkgver == 45 ) fpos -= 2; // ???
if ( head->pkgver <= 35 ) fpos += 8; // ???
// process properties
int32_t prop = readindex();
if ( prop >= head->nnames ) continue;
if ( (uint32_t)prop >= head->nnames )
{
printf("Unknown property %d, skipping\n",prop);
fpos = prev;
continue;
}
char *pname = pkgfile+getname(prop,&l);
if ( strncasecmp(pname,"none",l) ) continue;
retry:
if ( strncasecmp(pname,"None",l) )
{
uint8_t info = readbyte();
int array = info&0x80;
int type = info&0xf;
int psiz = (info>>4)&0x7;
switch ( psiz )
{
case 0:
psiz = 1;
break;
case 1:
psiz = 2;
break;
case 2:
psiz = 4;
break;
case 3:
psiz = 12;
break;
case 4:
psiz = 16;
break;
case 5:
psiz = readbyte();
break;
case 6:
psiz = readword();
break;
case 7:
psiz = readdword();
break;
}
//printf(" prop %.*s (%u, %u, %u, %u)\n",l,pname,array,type,(info>>4)&7,psiz);
if ( array && (type != 3) )
{
int idx = readindex();
//printf(" index: %d\n",idx);
}
if ( type == 10 )
{
int32_t tl, sn;
sn = readindex();
char *sname = (char*)(pkgfile+getname(sn,&tl));
//printf(" struct: %.*s\n",tl,sname);
}
fpos += psiz;
prop = readindex();
pname = (char*)(pkgfile+getname(prop,&l));
goto retry;
}
int32_t ext;
if ( head->pkgver >= 120 )
{