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rathena/src/common/grfio.c
celest c7d66f2207 some aesthetics changes ^^ 
git-svn-id: https://svn.code.sf.net/p/rathena/svn/branches/stable@1399 54d463be-8e91-2dee-dedb-b68131a5f0ec
2005-04-04 15:08:47 +00:00

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/*********************************************************************
*
* 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/utils.h"
#include "../common/mmo.h"
#include "../common/showmsg.h"
#include "../common/malloc.h"
#ifdef _WIN32
#ifdef LOCALZLIB
#include "zlib.h"
#define zlib_inflateInit inflateInit
#define zlib_inflate inflate
#define zlib_inflateEnd inflateEnd
#define zlib_deflateInit deflateInit
#define zlib_deflate deflate
#define zlib_deflateEnd deflateEnd
#else
#include "../lib/zlib_win32.h"
#include "../common/dll.h"
DLL zlib_dll;
#define zlib_inflateInit(strm) zlib_inflateInit_((strm),ZLIB_VERSION, sizeof(z_stream))
#define zlib_deflateInit(strm, level) zlib_deflateInit_((strm),(level),ZLIB_VERSION,sizeof(z_stream))
int (WINAPI* zlib_inflateInit_) (z_streamp strm, const char *version, int stream_size);
int (WINAPI* zlib_inflate) (z_streamp strm, int flush);
int (WINAPI* zlib_inflateEnd) (z_streamp strm);
int (WINAPI* zlib_deflateInit_) (z_streamp strm, int level, const char *version, int stream_size);
int (WINAPI* zlib_deflate) (z_streamp strm, int flush);
int (WINAPI* zlib_deflateEnd) (z_streamp strm);
#endif
#else
#ifdef LOCALZLIB
#include "zlib/zlib.h"
#else
#include <zlib.h>
#endif
#define zlib_inflateInit inflateInit
#define zlib_inflate inflate
#define zlib_inflateEnd inflateEnd
#define zlib_deflateInit deflateInit
#define zlib_deflate deflate
#define zlib_deflateEnd deflateEnd
#endif
#ifdef MEMWATCH
#include "memwatch.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] = ""; // "../";
// accessor to data_file,adata_file,sdata_file
char *grfio_setdatafile(const char *str){ strcpy(data_file,str); return data_file; }
char *grfio_setadatafile(const char *str){ strcpy(adata_file,str); return adata_file; }
char *grfio_setsdatafile(const char *str){ strcpy(sdata_file,str); return sdata_file; }
//----------------------------
// 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;
static int filelist_entrys;
static int filelist_maxentry;
static char **gentry_table;
static int gentry_entrys;
static int gentry_maxentry;
//----------------------------
// 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 = zlib_inflateInit(&stream);
if (err != Z_OK) return err;
err = zlib_inflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
zlib_inflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = zlib_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 = zlib_deflateInit(&stream,Z_DEFAULT_COMPRESSION);
if (err != Z_OK) return err;
err = zlib_deflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
zlib_inflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = zlib_deflateEnd(&stream);
return err;
}
/***********************************************************
*** 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;
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) {
printf("filelist limit : filelist_add\n");
exit(1);
}
if (filelist_entrys>=filelist_maxentry) {
FILELIST *new_filelist = (FILELIST*)aRealloc(
(void*)filelist, (filelist_maxentry+FILELIST_ADDS)*sizeof(FILELIST) );
if (new_filelist != NULL) {
filelist = new_filelist;
memset(filelist + filelist_maxentry, '\0',
FILELIST_ADDS * sizeof(FILELIST));
filelist_maxentry += FILELIST_ADDS;
} else {
printf("out of memory : filelist_add\n");
exit(1);
}
}
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 *new_filelist = (FILELIST*)aRealloc(
(void*)filelist,filelist_entrys*sizeof(FILELIST) );
if (new_filelist != NULL) {
filelist = new_filelist;
filelist_maxentry = filelist_entrys;
} else {
printf("out of memory : filelist\n");
exit(1);
}
}
}
}
/***********************************************************
*** Grfio Sobroutines ***
***********************************************************/
/*==========================================
* Grfio : Resnametable replace
*------------------------------------------
*/
char* grfio_resnametable(char* fname, char *lfname)
{
FILE *fp;
char *p;
char w1[256],w2[256],restable[256],line[512];
sprintf(restable,"%sdata\\resnametable.txt",data_dir);
for(p=&restable[0];*p!=0;p++) if (*p=='\\') *p = '/';
fp = fopen(restable,"rb");
if(fp==NULL) {
printf("%s not found (grfio_resnametable)\n",restable);
return NULL; // 1:not found error
}
while(fgets(line,508,fp)){
if((sscanf(line,"%[^#]#%[^#]#",w1,w2)==2) && (sscanf(fname,"%*5s%s",lfname)==1) && (!strcmpi(w1,lfname))){
sprintf(lfname,"data\\%s",w2);
fclose(fp);
return lfname;
}
}
fclose(fp);
return fname;
}
/*==========================================
* 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,*p;
FILELIST lentry;
struct stat st;
if(strcmp(data_dir, "") != 0 && (rname=grfio_resnametable(fname,lfname))!=NULL) {
//printf("%s\t",fname);
//sprintf(rname,"%s",grfio_resnametable(fname,lfname));
//printf("%s\n",rname);
sprintf(lfname,"%s%s",data_dir,rname);
//printf("%s\n",lfname);
}
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) {
printf("%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 = NULL;
unsigned char *buf=NULL,*buf2=NULL;
char *gfname;
FILELIST *entry;
entry = filelist_find(fname);
if (entry==NULL || entry->gentry<=0) { // LocalFileCheck
char lfname[256],*rname,*p;
FILELIST lentry;
strncpy(lfname,fname,255);
// i hope this is the correct way =p [celest]
if ((rname=grfio_resnametable(fname,lfname))!=NULL) {
char tbuf[255];
//sprintf(rname,"%s",grfio_resnametable(fname,lfname));
sprintf(tbuf,"%s%s",data_dir,rname);
strcpy(lfname, tbuf);
//printf("%s\n",lfname);
}
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);
if (buf2==NULL) {
printf("file read memory allocate error : declen\n");
goto errret;
}
fread(buf2,1,lentry.declen,in);
fclose(in); in = NULL;
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 {
printf("%s not found (grfio_reads)\n", fname);
//goto errret;
aFree(buf2);
return NULL;
}
}
}
if (entry!=NULL && entry->gentry>0) { // Archive[GRF] File Read
buf = (unsigned char *) aCallocA(entry->srclen_aligned+1024, 1);
if (buf==NULL) {
printf("file read memory allocate error : srclen_aligned\n");
goto errret;
}
gfname = gentry_table[entry->gentry-1];
in = fopen(gfname,"rb");
if(in==NULL) {
printf("%s not found (grfio_reads)\n",gfname);
//goto errret;
aFree(buf);
return NULL;
}
fseek(in,entry->srcpos,0);
fread(buf,1,entry->srclen_aligned,in);
fclose(in);
buf2 = (unsigned char *)aCallocA(entry->declen+1024, 1);
if (buf2==NULL) {
printf("file decode memory allocate error\n");
goto errret;
}
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) {
printf("decode_zip size miss match err: %d != %d\n",(int)len,entry->declen);
goto errret;
}
} else {
memcpy(buf2,buf,entry->declen);
}
aFree(buf);
}
if (size!=NULL && entry!=NULL)
*size = entry->declen;
return buf2;
errret:
if (buf!=NULL) aFree(buf);
if (buf2!=NULL) aFree(buf2);
if (in!=NULL) fclose(in);
return NULL;
}
/*==========================================
* 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;
int 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) {
sprintf(tmp_output,"GRF Data File not found: '"CL_WHITE"%s"CL_RESET"'.\n",gfname);
ShowWarning(tmp_output);
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);
printf("%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);
printf("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){
printf("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 (rSize > grf_size-ftell(fp)) {
fclose(fp);
printf("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);
printf("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);
printf("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) {
printf("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);
printf("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()
{
int size;
char *buf,*ptr;
char w1[256],w2[256],src[256],dst[256];
FILELIST *entry;
buf = (char*)grfio_reads("data\\resnametable.txt",&size);
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 {
//printf("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) {
printf("gentrys limit : grfio_add\n");
exit(1);
}
// sprintf(tmp_output,"Reading GRF File: '%s'.\n",fname);
// ShowStatus(tmp_output);
if (gentry_entrys>=gentry_maxentry) {
char **new_gentry = (char**)aRealloc(
(void*)gentry_table,(gentry_maxentry+GENTRY_ADDS)*sizeof(char*) );
if (new_gentry!=NULL) {
int lop;
gentry_table = new_gentry;
gentry_maxentry += GENTRY_ADDS;
for(lop=gentry_entrys;lop<gentry_maxentry;lop++)
gentry_table[lop] = NULL;
} else {
printf("out of memory : grfio_add\n");
exit(1);
}
}
len = strlen( fname );
buf = (char*)aCallocA(len+1, 1);
if (buf==NULL) {
printf("out of memory : gentry\n");
exit(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)
{
int lop;
if (filelist!=NULL) aFree(filelist);
filelist = NULL;
filelist_entrys = filelist_maxentry = 0;
if (gentry_table!=NULL) {
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;
#ifdef _WIN32
#ifndef LOCALZLIB
DLL_CLOSE(zlib_dll);
zlib_inflateInit_ = NULL;
zlib_inflate = NULL;
zlib_inflateEnd = NULL;
#endif
#endif
}
/*==========================================
* Grfio : Initialize
*------------------------------------------
*/
void grfio_init(char *fname)
{
FILE *data_conf;
char line[1024], w1[1024], w2[1024];
int result = 0, result2 = 0, result3 = 0, result4 = 0;
#ifdef _WIN32
#ifndef LOCALZLIB
if(!zlib_dll) {
zlib_dll = DLL_OPEN ("zlib.dll");
DLL_SYM (zlib_inflateInit_, zlib_dll, "inflateInit_");
DLL_SYM (zlib_inflate, zlib_dll, "inflate");
DLL_SYM (zlib_inflateEnd, zlib_dll, "inflateEnd");
DLL_SYM (zlib_deflateInit_, zlib_dll, "deflateInit_");
DLL_SYM (zlib_deflate, zlib_dll, "deflate");
DLL_SYM (zlib_deflateEnd, zlib_dll, "deflateEnd");
if(zlib_dll == NULL) {
MessageBox(NULL,"Can't load zlib.dll","grfio.c",MB_OK);
exit(1);
}
}
#endif
#endif
data_conf = fopen(fname, "r");
// It will read, if there is grf-files.txt.
if (data_conf) {
while(fgets(line, 1020, data_conf)) {
if (sscanf(line, "%[^:]: %[^\r\n]", w1, w2) == 2) {
if(strcmp(w1, "data") == 0)
strcpy(data_file, w2);
else if(strcmp(w1, "sdata") == 0)
strcpy(sdata_file, w2);
else if(strcmp(w1, "adata") == 0)
strcpy(adata_file, w2);
else if(strcmp(w1,"data_dir") == 0)
strcpy(data_dir, w2);
}
}
fclose(data_conf);
sprintf(tmp_output,"Done reading '"CL_WHITE"%s"CL_RESET"'.\n",fname);
ShowStatus(tmp_output);
} // end of reading grf-files.txt
hashinit(); // hash table initialization
filelist = NULL; filelist_entrys = filelist_maxentry = 0;
gentry_table = NULL; gentry_entrys = gentry_maxentry = 0;
atexit(grfio_final); // End processing definition
// Entry table reading
if (strcmp(data_file, "") != 0) // If data directive exists in grf-files.txt (i.e. data_file is not equal to "")
result = grfio_add(data_file); // Primary data file
if (strcmp(sdata_file, "") != 0) // If sdata directive exists in grf-files.txt (i.e. sdata_file is not equal to "")
result2 = grfio_add(sdata_file); // Sakray data file
if (strcmp(adata_file, "") != 0) // If data directive exists in grf-files.txt (i.e. adata_file is not equal to "")
result3 = grfio_add(adata_file); // Alpha version data file
if (strcmp(data_dir, "") == 0) // Id data_dir doesn't exist
result4 = 1; // Data directory
/*
if (result != 0 && result2 != 0 && result3 != 0 && result4 != 0) {
printf("not grf file readed exit!!\n");
exit(1); // It ends, if a resource cannot read one.
}*/
}
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