// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
// For more information, see LICENCE in the main folder
/*********************************************************************
*
* Ragnarok Online Emulator : grfio.c -- grf file I/O Module
*--------------------------------------------------------------------
* special need library : zlib
*********************************************************************
* $Id: grfio.c,v 1.2 2004/09/29 17:31:49 kalaspuff Exp $
*
* 2002/12/18... the original edition
* 2003/01/23 ... Code correction
* 2003/02/01 ... An addition and decryption processing are improved for LocalFile and two or more GRF(s) check processing.
* 2003/02/02 ... Even if there is no grf it does not stop -- as -- correction
* 2003/02/02... grf reading specification can be added later -- as -- correction (grfio_add function addition)
* 2003/02 / 03... at the time of grfio_resourcecheck processing the entry addition processing method -- correction
* 2003/02/05... change of the processing in grfio_init
* 2003/02/23... a local file check -- GRFIO_LOCAL -- switch (Defoe -- Function Off)
* 2003/10/21 ... The data of alpha client was read.
* 2003/11/10 ... Ready new grf format.
* 2003/11/11 ... version check fix & bug fix
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/stat.h>
#include "grfio.h"
#include "../common/mmo.h"
#include "../common/showmsg.h"
#include "../common/malloc.h"
#include "../zlib/unzip.h"
#define CHUNK 16384
#ifdef __WIN32
#include "../zlib/zlib.h"
#include "../zlib/iowin32.h"
#else
#include <zlib.h>
#endif
typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef unsigned long DWORD;
//static char data_file[1024] = ""; // "data.grf";
//static char sdata_file[1024] = ""; // "sdata.grf";
//static char adata_file[1024] = ""; // "adata.grf";
static char data_dir[1024] = ""; // "../";
//----------------------------
// file entry table struct
//----------------------------
typedef struct {
int srclen; // compressed size
int srclen_aligned; //
int declen; // original size
int srcpos;
short next;
char cycle;
char type;
char fn[128-4*5]; // file name
char gentry; // read grf file select
} FILELIST;
//gentry ... 0 : It acquires from a local file.
// It acquires from the resource file of 1>=:gentry_table[gentry-1].
// 1<=: Check a local file.
// If it is, after re-setting to 0, it acquires from a local file.
// If there is nothing, mark reversal will be carried out, and it will re-set, and will acquire from a resource file as well as 1>=.
//Since char defines *FILELIST.gentry, the maximum which can be added by grfio_add becomes by 127 pieces.
#define GENTRY_LIMIT 127
#define FILELIST_LIMIT 65536 // temporary maximum, and a theory top maximum are 2G.
static FILELIST *filelist = NULL;
static int filelist_entrys = 0;
static int filelist_maxentry = 0;
static char **gentry_table = NULL;
static int gentry_entrys = 0;
static int gentry_maxentry = 0;
#define RESNAME_LIMIT 1024
#define RESNAME_ADDS 16
typedef struct resname_entry {
char src[64];
char dst[64];
} Resname;
static struct resname_entry *localresname = NULL;
static int resname_entrys = 0;
static int resname_maxentrys = 0;
//----------------------------
// file list hash table
//----------------------------
static int filelist_hash[256];
//----------------------------
// grf decode data table
//----------------------------
static unsigned char BitMaskTable[8] = {
0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01
};
static char BitSwapTable1[64] = {
58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
};
static char BitSwapTable2[64] = {
40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31,
38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,
36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27,
34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25
};
static char BitSwapTable3[32] = {
16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
};
static unsigned char NibbleData[4][64]={
{
0xef, 0x03, 0x41, 0xfd, 0xd8, 0x74, 0x1e, 0x47, 0x26, 0xef, 0xfb, 0x22, 0xb3, 0xd8, 0x84, 0x1e,
0x39, 0xac, 0xa7, 0x60, 0x62, 0xc1, 0xcd, 0xba, 0x5c, 0x96, 0x90, 0x59, 0x05, 0x3b, 0x7a, 0x85,
0x40, 0xfd, 0x1e, 0xc8, 0xe7, 0x8a, 0x8b, 0x21, 0xda, 0x43, 0x64, 0x9f, 0x2d, 0x14, 0xb1, 0x72,
0xf5, 0x5b, 0xc8, 0xb6, 0x9c, 0x37, 0x76, 0xec, 0x39, 0xa0, 0xa3, 0x05, 0x52, 0x6e, 0x0f, 0xd9,
}, {
0xa7, 0xdd, 0x0d, 0x78, 0x9e, 0x0b, 0xe3, 0x95, 0x60, 0x36, 0x36, 0x4f, 0xf9, 0x60, 0x5a, 0xa3,
0x11, 0x24, 0xd2, 0x87, 0xc8, 0x52, 0x75, 0xec, 0xbb, 0xc1, 0x4c, 0xba, 0x24, 0xfe, 0x8f, 0x19,
0xda, 0x13, 0x66, 0xaf, 0x49, 0xd0, 0x90, 0x06, 0x8c, 0x6a, 0xfb, 0x91, 0x37, 0x8d, 0x0d, 0x78,
0xbf, 0x49, 0x11, 0xf4, 0x23, 0xe5, 0xce, 0x3b, 0x55, 0xbc, 0xa2, 0x57, 0xe8, 0x22, 0x74, 0xce,
}, {
0x2c, 0xea, 0xc1, 0xbf, 0x4a, 0x24, 0x1f, 0xc2, 0x79, 0x47, 0xa2, 0x7c, 0xb6, 0xd9, 0x68, 0x15,
0x80, 0x56, 0x5d, 0x01, 0x33, 0xfd, 0xf4, 0xae, 0xde, 0x30, 0x07, 0x9b, 0xe5, 0x83, 0x9b, 0x68,
0x49, 0xb4, 0x2e, 0x83, 0x1f, 0xc2, 0xb5, 0x7c, 0xa2, 0x19, 0xd8, 0xe5, 0x7c, 0x2f, 0x83, 0xda,
0xf7, 0x6b, 0x90, 0xfe, 0xc4, 0x01, 0x5a, 0x97, 0x61, 0xa6, 0x3d, 0x40, 0x0b, 0x58, 0xe6, 0x3d,
}, {
0x4d, 0xd1, 0xb2, 0x0f, 0x28, 0xbd, 0xe4, 0x78, 0xf6, 0x4a, 0x0f, 0x93, 0x8b, 0x17, 0xd1, 0xa4,
0x3a, 0xec, 0xc9, 0x35, 0x93, 0x56, 0x7e, 0xcb, 0x55, 0x20, 0xa0, 0xfe, 0x6c, 0x89, 0x17, 0x62,
0x17, 0x62, 0x4b, 0xb1, 0xb4, 0xde, 0xd1, 0x87, 0xc9, 0x14, 0x3c, 0x4a, 0x7e, 0xa8, 0xe2, 0x7d,
0xa0, 0x9f, 0xf6, 0x5c, 0x6a, 0x09, 0x8d, 0xf0, 0x0f, 0xe3, 0x53, 0x25, 0x95, 0x36, 0x28, 0xcb,
}
};
/*-----------------
* long data get
*/
static unsigned int getlong(unsigned char *p)
{
// return *p+p[1]*256+(p[2]+p[3]*256)*65536;
return p[0]
| p[1] << 0x08
| p[2] << 0x10
| p[3] << 0x18; // Shinomori
}
/*==========================================
* Grf data decode : Subs
*------------------------------------------
*/
static void NibbleSwap(BYTE *Src, int len)
{
for(;0<len;len--,Src++) {
*Src = (*Src>>4) | (*Src<<4);
}
}
static void BitConvert(BYTE *Src,char *BitSwapTable)
{
int lop,prm;
BYTE tmp[8];
// *(DWORD*)tmp=*(DWORD*)(tmp+4)=0;
memset(tmp,0,8);
for(lop=0;lop!=64;lop++) {
prm = BitSwapTable[lop]-1;
if (Src[(prm >> 3) & 7] & BitMaskTable[prm & 7]) {
tmp[(lop >> 3) & 7] |= BitMaskTable[lop & 7];
}
}
// *(DWORD*)Src = *(DWORD*)tmp;
// *(DWORD*)(Src+4) = *(DWORD*)(tmp+4);
memcpy(Src,tmp,8);
}
static void BitConvert4(BYTE *Src)
{
int lop,prm;
BYTE tmp[8];
tmp[0] = ((Src[7]<<5) | (Src[4]>>3)) & 0x3f; // ..0 vutsr
tmp[1] = ((Src[4]<<1) | (Src[5]>>7)) & 0x3f; // ..srqpo n
tmp[2] = ((Src[4]<<5) | (Src[5]>>3)) & 0x3f; // ..o nmlkj
tmp[3] = ((Src[5]<<1) | (Src[6]>>7)) & 0x3f; // ..kjihg f
tmp[4] = ((Src[5]<<5) | (Src[6]>>3)) & 0x3f; // ..g fedcb
tmp[5] = ((Src[6]<<1) | (Src[7]>>7)) & 0x3f; // ..cba98 7
tmp[6] = ((Src[6]<<5) | (Src[7]>>3)) & 0x3f; // ..8 76543
tmp[7] = ((Src[7]<<1) | (Src[4]>>7)) & 0x3f; // ..43210 v
for(lop=0;lop!=4;lop++) {
tmp[lop] = (NibbleData[lop][tmp[lop*2]] & 0xf0)
| (NibbleData[lop][tmp[lop*2+1]] & 0x0f);
}
*(DWORD*)(tmp+4)=0;
for(lop=0;lop!=32;lop++) {
prm = BitSwapTable3[lop]-1;
if (tmp[prm >> 3] & BitMaskTable[prm & 7]) {
tmp[(lop >> 3) + 4] |= BitMaskTable[lop & 7];
}
}
// *(DWORD*)Src ^= *(DWORD*)(tmp+4);
Src[0] ^= tmp[4];
Src[1] ^= tmp[5];
Src[2] ^= tmp[6];
Src[3] ^= tmp[7];
}
static void decode_des_etc(BYTE *buf,int len,int type,int cycle)
{
int lop,cnt=0;
if(cycle<3) cycle=3;
else if(cycle<5) cycle++;
else if(cycle<7) cycle+=9;
else cycle+=15;
for(lop=0;lop*8<len;lop++,buf+=8) {
if(lop<20 || (type==0 && lop%cycle==0)){ // des
BitConvert(buf,BitSwapTable1);
BitConvert4(buf);
BitConvert(buf,BitSwapTable2);
} else {
if(cnt==7 && type==0){
int a;
BYTE tmp[8];
*(DWORD*)tmp = *(DWORD*)buf;
*(DWORD*)(tmp+4) = *(DWORD*)(buf+4);
cnt=0;
buf[0]=tmp[3];
buf[1]=tmp[4];
buf[2]=tmp[6];
buf[3]=tmp[0];
buf[4]=tmp[1];
buf[5]=tmp[2];
buf[6]=tmp[5];
a=tmp[7];
if(a==0x00) a=0x2b;
else if(a==0x2b) a=0x00;
else if(a==0x01) a=0x68;
else if(a==0x68) a=0x01;
else if(a==0x48) a=0x77;
else if(a==0x77) a=0x48;
else if(a==0x60) a=0xff;
else if(a==0xff) a=0x60;
else if(a==0x6c) a=0x80;
else if(a==0x80) a=0x6c;
else if(a==0xb9) a=0xc0;
else if(a==0xc0) a=0xb9;
else if(a==0xeb) a=0xfe;
else if(a==0xfe) a=0xeb;
buf[7]=a;
}
cnt++;
}
}
}
/*==========================================
* Grf data decode sub : zip
*------------------------------------------
*/
int decode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen)
{
z_stream stream;
int err;
stream.next_in = (Bytef*)source;
stream.avail_in = (uInt)sourceLen;
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
stream.next_out = (Bytef*) dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
err = inflateInit(&stream);
if (err != Z_OK) return err;
err = inflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
inflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = inflateEnd(&stream);
return err;
}
int encode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen) {
z_stream stream;
int err;
stream.next_in = (Bytef*)source;
stream.avail_in = (uInt)sourceLen;
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
stream.next_out = (Bytef*) dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
err = deflateInit(&stream,Z_DEFAULT_COMPRESSION);
if (err != Z_OK) return err;
err = deflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
inflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = deflateEnd(&stream);
return err;
}
/*==========================================
* Decompress from file source to file dest until stream ends or EOF.
* inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
* allocated for processing, Z_DATA_ERROR if the deflate data is
* invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
* the version of the library linked do not match, or Z_ERRNO if there
* is an error reading or writing the files.
*
* Version 1.2 9 November 2004 Mark Adler
*------------------------------------------
*/
int decode_file (FILE *source, FILE *dest)
{
int err;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
/* allocate inflate state */
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.avail_in = 0;
strm.next_in = Z_NULL;
err = inflateInit(&strm);
if (err != Z_OK) return 0; //return err;
/* decompress until deflate stream ends or end of file */
do {
strm.avail_in = fread(in, 1, CHUNK, source);
if (ferror(source)) {
inflateEnd(&strm);
return 0;
}
if (strm.avail_in == 0)
break;
strm.next_in = in;
/* run inflate() on input until output buffer not full */
do {
strm.avail_out = CHUNK;
strm.next_out = out;
err = inflate(&strm, Z_NO_FLUSH);
Assert(err != Z_STREAM_ERROR); /* state not clobbered */
switch (err) {
case Z_NEED_DICT:
err = Z_DATA_ERROR; /* and fall through */
case Z_DATA_ERROR:
case Z_MEM_ERROR:
inflateEnd(&strm);
//return err;
return 0;
}
have = CHUNK - strm.avail_out;
if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
inflateEnd(&strm);
//return Z_ERRNO;
return 0;
}
} while (strm.avail_out == 0);
Assert(strm.avail_in == 0); /* all input will be used */
/* done when inflate() says it's done */
} while (err != Z_STREAM_END);
/* clean up and return */
inflateEnd(&strm);
return err == Z_STREAM_END ? 1 : 0;
}
/* ===================================
* Unzips a file. 1: success, 0: error
* Adapted from miniunz.c [Celest]
* Version 1.01b, May 30th, 2004
* Copyright (C) 1998-2004 Gilles Vollant
* -------------------------------------
*/
int deflate_file (const char *source, const char *filename)
{
#ifdef _WIN32
zlib_filefunc_def ffunc;
#endif
unzFile uf = NULL;
int err = UNZ_OK;
uInt size_buf = 8192;
FILE *fout = NULL;
void *buf;
#ifdef _WIN32
fill_win32_filefunc(&ffunc);
uf = unzOpen2(source, &ffunc);
#else
uf = unzOpen(source);
#endif
if (uf == NULL) {
//printf("Cannot open %s\n", source);
return 0;
}
//printf("%s opened\n", source);
if (unzLocateFile(uf, filename, 0) != UNZ_OK) {
//printf("file %s not found in the zipfile\n", filename);
return 0;
}
err = unzOpenCurrentFilePassword(uf, NULL);
//if (err != UNZ_OK)
// printf("error %d with zipfile in unzOpenCurrentFilePassword\n", err);
fout = fopen(filename,"wb");
if (fout == NULL) {
//printf("error opening %s\n", filename);
return 0;
}
buf = (void *)aMalloc(size_buf);
do {
err = unzReadCurrentFile(uf, buf, size_buf);
if (err < 0) {
//printf("error %d with zipfile in unzReadCurrentFile\n", err);
break;
}
if (err > 0 &&
fwrite(buf, err, 1, fout)!=1)
{
//printf("error in writing extracted file\n");
err = UNZ_ERRNO;
break;
}
} while (err > 0);
if (fout) fclose(fout);
if (err == UNZ_OK) {
err = unzCloseCurrentFile (uf);
//if (err != UNZ_OK)
// printf("error %d with zipfile in unzCloseCurrentFile\n", err);
aFree(buf);
return (err == UNZ_OK);
}
unzCloseCurrentFile(uf); /* don't lose the error */
return 0;
}
unsigned long grfio_crc32 (const char *buf, unsigned int len)
{
return crc32(crc32(0L, Z_NULL, 0), buf, len);
}
/***********************************************************
*** File List Sobroutines ***
***********************************************************/
/*==========================================
* File List : Hash make
*------------------------------------------
*/
static int filehash(unsigned char *fname)
{
unsigned int hash=0;
while(*fname) {
hash = ((hash<<1)+(hash>>7)*9+tolower(*fname));
fname++;
}
return hash & 255;
}
/*==========================================
* File List : Hash initalize
*------------------------------------------
*/
static void hashinit(void)
{
int lop;
for (lop = 0; lop < 256; lop++)
filelist_hash[lop] = -1;
}
/*==========================================
* File List : File find
*------------------------------------------
*/
FILELIST *filelist_find(char *fname)
{
int hash;
if (!filelist)
return NULL;
for (hash = filelist_hash[filehash((unsigned char *) fname)]; hash >= 0; hash = filelist[hash].next) {
if(strcmpi(filelist[hash].fn, fname) == 0)
break;
}
return (hash >= 0) ? &filelist[hash] : NULL;
}
/*==========================================
* File List : Filelist add
*------------------------------------------
*/
#define FILELIST_ADDS 1024 // number increment of file lists `
static FILELIST* filelist_add(FILELIST *entry)
{
int hash;
if (filelist_entrys >= FILELIST_LIMIT) {
ShowFatalError("filelist limit : filelist_add\n");
exit(1);
}
if (filelist_entrys >= filelist_maxentry) {
filelist = (FILELIST *)aRealloc(filelist, (filelist_maxentry + FILELIST_ADDS) * sizeof(FILELIST));
memset(filelist + filelist_maxentry, '\0', FILELIST_ADDS * sizeof(FILELIST));
filelist_maxentry += FILELIST_ADDS;
}
memcpy (&filelist[filelist_entrys], entry, sizeof(FILELIST));
hash = filehash((unsigned char *) entry->fn);
filelist[filelist_entrys].next = filelist_hash[hash];
filelist_hash[hash] = filelist_entrys;
filelist_entrys++;
return &filelist[filelist_entrys - 1];
}
static FILELIST* filelist_modify(FILELIST *entry)
{
FILELIST *fentry;
if ((fentry = filelist_find(entry->fn)) != NULL) {
int tmp = fentry->next;
memcpy(fentry, entry, sizeof(FILELIST));
fentry->next = tmp;
} else {
fentry = filelist_add(entry);
}
return fentry;
}
/*==========================================
* File List : filelist size adjust
*------------------------------------------
*/
static void filelist_adjust(void)
{
if (filelist != NULL) {
if (filelist_maxentry > filelist_entrys) {
filelist = (FILELIST *)aRealloc(
filelist, filelist_entrys * sizeof(FILELIST));
filelist_maxentry = filelist_entrys;
}
}
}
/***********************************************************
*** Grfio Sobroutines ***
***********************************************************/
/*==========================================
* Grfio : Local Resnametable replace
*------------------------------------------
*/
static void grfio_resnametable(char *src, char *dest)
{
int lop;
if (localresname == NULL ||
sscanf(src, "%*5s%s", dest) < 1)
{
// if not found copy the unresolved name into buffer
strcpy(dest, src);
return;
}
for (lop = 0; lop < resname_entrys; lop++) {
if (strcmpi(localresname[lop].src, dest) == 0) {
sprintf(dest, "data\\%s", localresname[lop].dst);
return;
}
}
return;
}
/*==========================================
* Grfio : Local Resnametable Initialize
*------------------------------------------
*/
static void grfio_resnameinit (void)
{
FILE *fp;
char *p;
// max length per entry is 34 in resnametable
char w1[64], w2[64], restable[256], line[256];
sprintf(restable, "%sdata\\resnametable.txt", data_dir);
for (p = &restable[0]; *p != 0; p++)
if (*p == '\\') *p = '/';
fp = fopen(restable,"rb");
if (fp == NULL) {
//ShowError("%s not found (grfio_resnameinit)\n", restable);
return;
}
while (fgets(line, sizeof(line) - 1, fp)){
if (sscanf(line, "%[^#]#%[^#]#", w1, w2) != 2)
continue;
// only save up necessary resource files
if (strstr(w1, ".gat") == NULL &&
strstr(w1, ".txt") == NULL)
continue;
if (resname_entrys >= RESNAME_LIMIT)
break;
if (resname_entrys >= resname_maxentrys) {
resname_maxentrys += RESNAME_ADDS;
localresname = (Resname*) aRealloc (localresname, resname_maxentrys * sizeof(Resname));
memset(localresname + (resname_maxentrys - RESNAME_ADDS), '\0', sizeof(Resname) * RESNAME_ADDS);
}
strcpy(localresname[resname_entrys].src, w1);
strcpy(localresname[resname_entrys].dst, w2);
resname_entrys++;
}
fclose(fp);
// free up unused sections
if (resname_maxentrys > resname_entrys) {
localresname = (Resname*) aRealloc (localresname, resname_entrys * sizeof(Resname));
resname_maxentrys = resname_entrys;
}
}
/*==========================================
* Grfio : Resource file size get
*------------------------------------------
*/
int grfio_size(char *fname)
{
FILELIST *entry;
entry = filelist_find(fname);
if (entry == NULL || entry->gentry < 0) { // LocalFileCheck
char lfname[256], rname[256], *p;
FILELIST lentry;
struct stat st;
grfio_resnametable(fname, rname);
sprintf(lfname, "%s%s", data_dir, rname);
for (p = &lfname[0]; *p != 0; p++)
if (*p=='\\') *p = '/'; // * At the time of Unix
if (stat(lfname, &st) == 0) {
strncpy(lentry.fn, fname, sizeof(lentry.fn) - 1);
lentry.declen = st.st_size;
lentry.gentry = 0; // 0:LocalFile
entry = filelist_modify(&lentry);
} else if (entry == NULL) {
ShowError("%s not found (grfio_size)\n", fname);
//exit(1);
return -1;
}
}
return entry->declen;
}
/*==========================================
* Grfio : Resource file read & size get
*------------------------------------------
*/
void* grfio_reads(char *fname, int *size)
{
FILE *in;
FILELIST *entry;
unsigned char *buf2 = NULL;
entry = filelist_find(fname);
if (entry == NULL || entry->gentry <= 0) { // LocalFileCheck
char lfname[256], rname[256], *p;
FILELIST lentry;
// resolve filename into rname
grfio_resnametable(fname, rname);
sprintf(lfname, "%s%s", data_dir, rname);
for (p = &lfname[0]; *p != 0; p++)
if (*p == '\\') *p = '/'; // * At the time of Unix
in = fopen(lfname, "rb");
if (in != NULL) {
if (entry != NULL && entry->gentry == 0) {
lentry.declen = entry->declen;
} else {
fseek(in,0,2); // SEEK_END
lentry.declen = ftell(in);
}
fseek(in,0,0); // SEEK_SET
buf2 = (unsigned char *)aCallocA(lentry.declen + 1024, 1);
fread(buf2, 1, lentry.declen, in);
fclose(in);
strncpy(lentry.fn, fname, sizeof(lentry.fn) - 1);
lentry.gentry = 0; // 0:LocalFile
entry = filelist_modify(&lentry);
} else {
if (entry != NULL && entry->gentry < 0) {
entry->gentry = -entry->gentry; // local file checked
} else {
ShowError("%s not found (grfio_reads - local file %s)\n", fname, lfname);
return NULL;
}
}
}
if (entry != NULL && entry->gentry > 0) { // Archive[GRF] File Read
char *gfname = gentry_table[entry->gentry - 1];
in = fopen(gfname, "rb");
if(in != NULL) {
unsigned char *buf = (unsigned char *)aCallocA(entry->srclen_aligned + 1024, 1);
fseek(in, entry->srcpos, 0);
fread(buf, 1, entry->srclen_aligned, in);
fclose(in);
buf2 = (unsigned char *)aCallocA(entry->declen + 1024, 1);
if (entry->type == 1 || entry->type == 3 || entry->type == 5) {
uLongf len;
if (entry->cycle >= 0)
decode_des_etc(buf, entry->srclen_aligned, entry->cycle == 0, entry->cycle);
len = entry->declen;
decode_zip(buf2, &len, buf, entry->srclen);
if (len != entry->declen) {
ShowError("decode_zip size miss match err: %d != %d\n", (int)len, entry->declen);
aFree(buf);
aFree(buf2);
return NULL;
}
} else {
memcpy(buf2, buf, entry->declen);
}
aFree(buf);
} else {
ShowError("%s not found (grfio_reads - grf file %s)\n", fname, gfname);
return NULL;
}
}
if (size != NULL && entry != NULL)
*size = entry->declen;
return buf2;
}
/*==========================================
* Grfio : Resource file read
*------------------------------------------
*/
void* grfio_read(char *fname)
{
return grfio_reads(fname, NULL);
}
/*==========================================
* Resource filename decode
*------------------------------------------
*/
static char * decode_filename(unsigned char *buf,int len)
{
int lop;
for(lop=0;lop<len;lop+=8) {
NibbleSwap(&buf[lop],8);
BitConvert(&buf[lop],BitSwapTable1);
BitConvert4(&buf[lop]);
BitConvert(&buf[lop],BitSwapTable2);
}
return (char*)buf;
}
/*==========================================
* Grfio : Entry table read
*------------------------------------------
*/
static int grfio_entryread(char *gfname,int gentry)
{
FILE *fp;
long grf_size,list_size;
unsigned char grf_header[0x2e];
int lop,entry,entrys,ofs,grf_version;
char *fname;
unsigned char *grf_filelist;
fp = fopen(gfname, "rb");
if (fp == NULL) {
ShowWarning("GRF Data File not found: '"CL_WHITE"%s"CL_RESET"'.\n",gfname);
return 1; // 1:not found error
}
fseek(fp,0,2); // SEEK_END
grf_size = ftell(fp);
fseek(fp,0,0); // SEEK_SET
fread(grf_header,1,0x2e,fp);
if (strcmp((const char *) grf_header,"Master of Magic") ||
fseek(fp,getlong(grf_header+0x1e),1)) // SEEK_CUR
{
fclose(fp);
ShowError("%s read error\n",gfname);
return 2; // 2:file format error
}
grf_version = getlong(grf_header+0x2a) >> 8;
if (grf_version == 0x01) { //****** Grf version 01xx ******
list_size = grf_size - ftell(fp);
grf_filelist = (unsigned char *) aCallocA(list_size, 1);
/*if (grf_filelist == NULL){
fclose(fp);
ShowError("out of memory : grf_filelist\n");
return 3; // 3:memory alloc error
}*/
fread(grf_filelist,1,list_size,fp);
fclose(fp);
entrys = getlong(grf_header+0x26) - getlong(grf_header+0x22) - 7;
// Get an entry
for (entry = 0,ofs = 0; entry < entrys; entry++) {
int ofs2, srclen, srccount, type;
char *period_ptr;
FILELIST aentry;
ofs2 = ofs+getlong(grf_filelist+ofs)+4;
type = grf_filelist[ofs2+12];
if (type != 0) { // Directory Index ... skip
fname = decode_filename(grf_filelist+ofs+6, grf_filelist[ofs]-6);
if (strlen(fname) > sizeof(aentry.fn) - 1) {
ShowFatalError("file name too long : %s\n",fname);
aFree(grf_filelist);
exit(1);
}
srclen = 0;
if ((period_ptr = strrchr(fname, '.')) != NULL) {
for(lop = 0; lop < 4; lop++) {
if (strcmpi(period_ptr, ".gnd\0.gat\0.act\0.str"+lop*5) == 0)
break;
}
srclen = getlong(grf_filelist+ofs2) - getlong(grf_filelist+ofs2+8) - 715;
if(lop == 4) {
for(lop = 10, srccount = 1; srclen >= lop; lop = lop * 10, srccount++);
} else {
srccount = 0;
}
} else {
srccount = 0;
}
aentry.srclen = srclen;
aentry.srclen_aligned = getlong(grf_filelist+ofs2+4)-37579;
aentry.declen = getlong(grf_filelist+ofs2+8);
aentry.srcpos = getlong(grf_filelist+ofs2+13)+0x2e;
aentry.cycle = srccount;
aentry.type = type;
strncpy(aentry.fn, fname,sizeof(aentry.fn)-1);
#ifdef GRFIO_LOCAL
aentry.gentry = -(gentry+1); // As Flag for making it a negative number carrying out the first time LocalFileCheck
#else
aentry.gentry = gentry+1; // With no first time LocalFileCheck
#endif
filelist_modify(&aentry);
}
ofs = ofs2 + 17;
}
aFree(grf_filelist);
} else if (grf_version == 0x02) { //****** Grf version 02xx ******
unsigned char eheader[8];
unsigned char *rBuf;
uLongf rSize, eSize;
fread(eheader,1,8,fp);
rSize = getlong(eheader); // Read Size
eSize = getlong(eheader+4); // Extend Size
if ((long)rSize > grf_size-ftell(fp)) { // Warning fix [Lance]
fclose(fp);
ShowError("Illegal data format : grf compress entry size\n");
return 4;
}
rBuf = (unsigned char *)aCallocA(rSize , 1); // Get a Read Size
/*if (rBuf==NULL) {
fclose(fp);
ShowError("out of memory : grf compress entry table buffer\n");
return 3;
}*/
grf_filelist = (unsigned char *)aCallocA(eSize , 1); // Get a Extend Size
/*if (grf_filelist==NULL) {
aFree(rBuf);
fclose(fp);
ShowError("out of memory : grf extract entry table buffer\n");
return 3;
}*/
fread(rBuf,1,rSize,fp);
fclose(fp);
decode_zip(grf_filelist, &eSize, rBuf, rSize); // Decode function
list_size = eSize;
aFree(rBuf);
entrys = getlong(grf_header+0x26) - 7;
// Get an entry
for(entry = 0, ofs = 0; entry < entrys; entry++){
int ofs2, srclen, srccount, type;
FILELIST aentry;
fname = (char*)(grf_filelist+ofs);
if (strlen(fname) > sizeof(aentry.fn)-1) {
ShowFatalError("grf : file name too long : %s\n",fname);
aFree(grf_filelist);
exit(1);
}
//ofs2 = ofs+strlen((char*)(grf_filelist+ofs))+1;
ofs2 = ofs + strlen(fname)+1;
type = grf_filelist[ofs2+12];
if (type == 1 || type == 3 || type == 5) {
srclen = getlong(grf_filelist+ofs2);
if (grf_filelist[ofs2+12] == 3) {
for (lop = 10, srccount = 1; srclen >= lop; lop = lop * 10, srccount++);
} else if (grf_filelist[ofs2+12] == 5) {
srccount = 0;
} else { // if (grf_filelist[ofs2+12]==1) {
srccount = -1;
}
aentry.srclen = srclen;
aentry.srclen_aligned = getlong(grf_filelist+ofs2+4);
aentry.declen = getlong(grf_filelist+ofs2+8);
aentry.srcpos = getlong(grf_filelist+ofs2+13)+0x2e;
aentry.cycle = srccount;
aentry.type = type;
strncpy(aentry.fn,fname,sizeof(aentry.fn)-1);
#ifdef GRFIO_LOCAL
aentry.gentry = -(gentry+1); // As Flag for making it a negative number carrying out the first time LocalFileCheck
#else
aentry.gentry = gentry+1; // With no first time LocalFileCheck
#endif
filelist_modify(&aentry);
}
ofs = ofs2 + 17;
}
aFree(grf_filelist);
} else { //****** Grf Other version ******
fclose(fp);
ShowError("not support grf versions : %04x\n",getlong(grf_header+0x2a));
return 4;
}
filelist_adjust(); // Unnecessary area release of filelist
return 0; // 0:no error
}
/*==========================================
* Grfio : Resource file check
*------------------------------------------
*/
static void grfio_resourcecheck(void)
{
int size;
char *buf, *ptr;
char w1[256], w2[256], src[256], dst[256];
FILELIST *entry;
buf = (char *)grfio_reads("data\\resnametable.txt", &size);
if (buf == NULL)
return;
buf[size] = 0;
for (ptr = buf; ptr - buf < size;) {
if (sscanf(ptr,"%[^#]#%[^#]#",w1,w2) == 2) {
if (strstr(w2, "bmp")) {
sprintf(src, "data\\texture\\%s", w1);
sprintf(dst, "data\\texture\\%s", w2);
} else {
sprintf(src, "data\\%s", w1);
sprintf(dst, "data\\%s", w2);
}
entry = filelist_find(dst);
if (entry != NULL) {
FILELIST fentry;
memcpy(&fentry, entry, sizeof(FILELIST));
strncpy(fentry.fn, src, sizeof(fentry.fn) - 1);
filelist_modify(&fentry);
} else {
//ShowError("file not found in data.grf : %s < %s\n",dst,src);
}
}
ptr = strchr(ptr,'\n'); // Next line
if (!ptr) break;
ptr++;
}
aFree(buf);
filelist_adjust(); // Unnecessary area release of filelist
}
/*==========================================
* Grfio : Resource add
*------------------------------------------
*/
#define GENTRY_ADDS 16 // The number increment of gentry_table entries
int grfio_add(char *fname)
{
int len,result;
char *buf;
if (gentry_entrys >= GENTRY_LIMIT) {
ShowFatalError("gentrys limit : grfio_add\n");
exit(1);
}
if (gentry_entrys >= gentry_maxentry) {
gentry_maxentry += GENTRY_ADDS;
gentry_table = (char**)aRealloc(gentry_table, gentry_maxentry * sizeof(char*));
memset(gentry_table + (gentry_maxentry - GENTRY_ADDS), 0, sizeof(char*) * GENTRY_ADDS);
}
len = strlen( fname );
buf = (char*)aCallocA(len + 1, 1);
strcpy(buf, fname);
gentry_table[gentry_entrys++] = buf;
result = grfio_entryread(fname, gentry_entrys - 1);
if (result == 0)
// Resource check
grfio_resourcecheck();
return result;
}
/*==========================================
* Grfio : Finalize
*------------------------------------------
*/
void grfio_final(void)
{
if (filelist != NULL)
aFree(filelist);
filelist_entrys = filelist_maxentry = 0;
if (gentry_table != NULL) {
int lop;
for (lop = 0; lop < gentry_entrys; lop++) {
if (gentry_table[lop] != NULL)
aFree(gentry_table[lop]);
}
aFree(gentry_table);
}
gentry_table = NULL;
gentry_entrys = gentry_maxentry = 0;
if (localresname) aFree(localresname);
}
/*==========================================
* Grfio : Initialize
*------------------------------------------
*/
void grfio_init(char *fname)
{
FILE *data_conf;
char line[1024], w1[1024], w2[1024];
int result = 0;
hashinit(); // hash table initialization
data_conf = fopen(fname, "r");
// It will read, if there is grf-files.txt.
if (data_conf) {
while(fgets(line, sizeof(line) - 1, data_conf)) {
if (line[0] == '/' && line[1] == '/')
continue;
if (sscanf(line, "%[^:]: %[^\r\n]", w1, w2) != 2)
continue;
// Entry table reading
if(strcmp(w1, "grf") == 0 ||
strcmp(w1, "data") == 0 || // Primary data file
strcmp(w1, "sdata") == 0 || // Sakray data file
strcmp(w1, "adata") == 0) // Alpha version data file
// increment if successfully loaded
result += (grfio_add(w2) == 0);
else if(strcmp(w1,"data_dir") == 0) // Data directory
strcpy(data_dir, w2);
}
fclose(data_conf);
ShowStatus("Done reading '"CL_WHITE"%s"CL_RESET"'.\n", fname);
} // end of reading grf-files.txt
if (result == 0) {
ShowInfo("No grf's loaded.. using default data directory\n");
//exit(1); // It ends, if a resource cannot read one.
}
// initialise Resnametable
grfio_resnameinit();
return;
}
