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engine: try to make hashpaks more compatible between 32-bit and 64-bit platforms

pull/2/head
Alibek Omarov 2 years ago
parent
commit
360dc4f7ed
  1. 23
      engine/common/hpak.c
  2. 45
      engine/common/hpak.h

23
engine/common/hpak.c

@ -49,6 +49,18 @@ const char *HPAK_TypeFromIndex( int type ) @@ -49,6 +49,18 @@ const char *HPAK_TypeFromIndex( int type )
return "?";
}
static inline void HPAK_ResourceToCompat( dresource_t *dest, resource_t *src )
{
memcpy( dest, src, sizeof( *dest ));
dest->pNext = dest->pPrev = 0xDEADBEEF;
}
static inline void HPAK_ResourceFromCompat( resource_t *dest, dresource_t *src )
{
memcpy( dest, src, sizeof( *src ));
dest->pNext = dest->pPrev = (void*)0xDEADBEEF;
}
static void HPAK_AddToQueue( const char *name, resource_t *pResource, void *data, file_t *f )
{
hash_pack_queue_t *p;
@ -89,6 +101,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f @@ -89,6 +101,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f
byte md5[16];
file_t *fout;
MD5Context_t ctx;
dresource_t dresource;
if( !COM_CheckString( filename ))
return;
@ -145,7 +158,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f @@ -145,7 +158,7 @@ void HPAK_CreatePak( const char *filename, resource_t *pResource, byte *pData, f
hash_pack_info.count = 1;
hash_pack_info.entries = Z_Malloc( sizeof( hpak_lump_t ));
hash_pack_info.entries[0].resource = *pResource;
HPAK_ResourceToCompat( &hash_pack_info.entries[0].resource, pResource );
hash_pack_info.entries[0].filepos = FS_Tell( fout );
hash_pack_info.entries[0].disksize = pResource->nDownloadSize;
@ -181,7 +194,7 @@ static qboolean HPAK_FindResource( hpak_info_t *hpk, byte *hash, resource_t *pRe @@ -181,7 +194,7 @@ static qboolean HPAK_FindResource( hpak_info_t *hpk, byte *hash, resource_t *pRe
if( !memcmp( hpk->entries[i].resource.rgucMD5_hash, hash, 16 ))
{
if( pResource )
*pResource = hpk->entries[i].resource;
HPAK_ResourceFromCompat( pResource, &hpk->entries[i].resource );
return true;
}
}
@ -330,7 +343,7 @@ void HPAK_AddLump( qboolean bUseQueue, const char *name, resource_t *pResource, @@ -330,7 +343,7 @@ void HPAK_AddLump( qboolean bUseQueue, const char *name, resource_t *pResource,
memset( pCurrentEntry, 0, sizeof( hpak_lump_t ));
FS_Seek( file_dst, hash_pack_header.infotableofs, SEEK_SET );
pCurrentEntry->resource = *pResource;
HPAK_ResourceToCompat( &pCurrentEntry->resource, pResource );
pCurrentEntry->filepos = FS_Tell( file_dst );
pCurrentEntry->disksize = pResource->nDownloadSize;
@ -370,7 +383,7 @@ static qboolean HPAK_Validate( const char *filename, qboolean quiet ) @@ -370,7 +383,7 @@ static qboolean HPAK_Validate( const char *filename, qboolean quiet )
int i, num_lumps;
MD5Context_t MD5_Hash;
string pakname;
resource_t *pRes;
dresource_t *pRes;
byte md5[16];
if( quiet ) HPAK_FlushHostQueue();
@ -621,7 +634,7 @@ static qboolean HPAK_ResourceForIndex( const char *filename, int index, resource @@ -621,7 +634,7 @@ static qboolean HPAK_ResourceForIndex( const char *filename, int index, resource
directory.entries = Z_Malloc( sizeof( hpak_lump_t ) * directory.count );
FS_Read( f, directory.entries, sizeof( hpak_lump_t ) * directory.count );
*pResource = directory.entries[index-1].resource;
HPAK_ResourceFromCompat( pResource, &directory.entries[index-1].resource );
Z_Free( directory.entries );
FS_Close( f );

45
engine/common/hpak.h

@ -37,24 +37,53 @@ infotable dlumpinfo_t[dwadinfo_t->numlumps] @@ -37,24 +37,53 @@ infotable dlumpinfo_t[dwadinfo_t->numlumps]
#define IDHPAKHEADER (('K'<<24)+('A'<<16)+('P'<<8)+'H') // little-endian "HPAK"
#define IDHPAK_VERSION 1
// a1ba: because Valve for some reason writes resource_t to file
// I had to make it crossplatform version
#pragma pack( push, 8 )
typedef struct dresource_s
{
char szFileName[64]; /* 0 64 */
/* --- cacheline 1 boundary (64 bytes) --- */
resourcetype_t type; /* 64 4 */
int nIndex; /* 68 4 */
int nDownloadSize; /* 72 4 */
unsigned char ucFlags; /* 76 1 */
unsigned char rgucMD5_hash[16]; /* 77 16 */
unsigned char playernum; /* 93 1 */
unsigned char rguc_reserved[32]; /* 94 32 */
/* XXX 2 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
uint32_t pNext; /* 128 4 */
uint32_t pPrev; /* 132 4 */
/* size: 136, cachelines: 3, members: 10 */
/* sum members: 134, holes: 1, sum holes: 2 */
/* last cacheline: 8 bytes */
} dresource_t;
#pragma pack( pop )
STATIC_ASSERT( sizeof( dresource_t ) == 136, "invalid dresource_t size, HPAKs won't be compatible (no custom logo in multiplayer!)" );
typedef struct
{
int ident; // should be equal HPAK
int version;
int infotableofs;
int ident; // should be equal HPAK
int version;
int infotableofs;
} hpak_header_t;
typedef struct
{
resource_t resource;
int filepos;
int disksize;
dresource_t resource;
int filepos;
int disksize;
} hpak_lump_t;
typedef struct
{
int count;
hpak_lump_t *entries; // variable sized.
int count;
hpak_lump_t *entries; // variable sized.
} hpak_info_t;
#endif // HPAK_H

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