diff options
Diffstat (limited to 'src/tool/grfio.c')
| -rw-r--r-- | src/tool/grfio.c | 1964 |
1 files changed, 982 insertions, 982 deletions
diff --git a/src/tool/grfio.c b/src/tool/grfio.c index ad6a466ba..2fa48a2a1 100644 --- a/src/tool/grfio.c +++ b/src/tool/grfio.c @@ -1,982 +1,982 @@ -// 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
- * 2006/04/16 ... fixed crash grfio_find_file when file is not found.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <malloc.h>
-#include <sys/stat.h>
-
-#include "grfio.h"
-#include "../common/mmo.h"
-#include "../zlib/unzip.h"
-
-#define CHUNK 16384
-
-#ifdef __WIN32
- #include "../zlib/zlib.h"
- #include "../zlib/iowin32.h"
-#else
- #ifndef __FREEBSD__
- #include <zlib.h>
- #endif
-#endif
-
-typedef unsigned char BYTE;
-typedef unsigned short WORD;
-typedef unsigned long DWORD;
-
-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;
- int cycle;
- char type;
- char fn[128-4*5]; // file name
- char *fnd;
- signed 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 512
-#define FILELIST_LIMIT 1048576 // 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;
-
-//----------------------------
-// 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[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];
- 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];
- }
- }
- 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];
- }
- }
- 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;
- memset(&stream, 0, sizeof(stream));
- 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;
-}
-
-/* ===================================
-* 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)
- return 0;
-
- if (unzLocateFile(uf, filename, 0) != UNZ_OK)
- return 0;
-
- err = unzOpenCurrentFilePassword(uf, NULL);
-
- fout = fopen(filename,"wb");
- if (fout == NULL)
- return 0;
-
- buf = (void *)malloc(size_buf);
- do {
- err = unzReadCurrentFile(uf, buf, size_buf);
- if (err < 0)
- break;
- if (err > 0 &&
- fwrite(buf, err, 1, fout)!=1)
- {
- err = UNZ_ERRNO;
- break;
- }
- } while (err > 0);
-
- if (fout) fclose(fout);
-
- if (err == UNZ_OK) {
- err = unzCloseCurrentFile (uf);
- free(buf);
- return (err == UNZ_OK);
- }
-
- unzCloseCurrentFile(uf); /* don't lose the error */
-
- return 0;
-}
-
-unsigned long grfio_crc32 (const unsigned char *buf, unsigned int len)
-{
- return crc32(crc32(0L, Z_NULL, 0), buf, len);
-}
-
-/***********************************************************
- *** File List Subroutines ***
- ***********************************************************/
-
-/*==========================================
- * 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
- *------------------------------------------
- */
-static 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;
-}
-
-char *grfio_find_file(char *fname){
- FILELIST *filelist = filelist_find(fname);
- if (!filelist) return NULL;
- return (!filelist->fnd?filelist->fn:filelist->fnd);
-}
-
-/*==========================================
- * 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("GRF filelist limit reached!\n");
- exit(1);
- }
-
- if (filelist_entrys >= filelist_maxentry) {
- filelist = (FILELIST *)realloc(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 *)realloc(
- filelist, filelist_entrys * sizeof(FILELIST));
- filelist_maxentry = filelist_entrys;
- }
- }
-}
-
-/***********************************************************
- *** Grfio Sobroutines ***
- ***********************************************************/
-
-/*==========================================
- * 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], *p;
- FILELIST lentry;
- struct stat st;
-
- sprintf(lfname, "%s%s", data_dir, fname);
-
- 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.fnd = NULL;
- 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;
- FILELIST *entry;
- unsigned char *buf2 = NULL;
-
- entry = filelist_find(fname);
-
- if (entry == NULL || entry->gentry <= 0) { // LocalFileCheck
- char lfname[256], *p;
- FILELIST lentry;
-
- sprintf(lfname, "%s%s", data_dir, fname);
-
- 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 *)malloc(lentry.declen + 1024);
- fread(buf2, 1, lentry.declen, in);
- fclose(in);
- strncpy(lentry.fn, fname, sizeof(lentry.fn) - 1);
- lentry.fnd = NULL;
- 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 - 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 *)malloc(entry->srclen_aligned + 1024);
- fseek(in, entry->srcpos, 0);
- fread(buf, 1, entry->srclen_aligned, in);
- fclose(in);
- buf2 = (unsigned char *)malloc(entry->declen + 1024);
- 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 mismatch err: %d != %d\n", (int)len, entry->declen);
- free(buf);
- free(buf2);
- return NULL;
- }
- } else {
- memcpy(buf2, buf, entry->declen);
- }
- free(buf);
- } else {
- printf("%s not found (grfio_reads - GRF file %s)\n", fname, gfname);
- return NULL;
- }
- }
- if (size != NULL && entry != NULL)
- *size = entry->declen;
-
- return buf2;
-}
-
-/*==========================================
- * 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) {
- printf("GRF data file not found: '%s'.\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);
- printf("GRF %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 *) malloc(list_size);
- 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("GRF file name %s is too long\n", fname);
- free(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);
- aentry.fnd = NULL;
-#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;
- }
- free(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);
- printf("Illegal data format: GRF compress entry size\n");
- return 4;
- }
-
- rBuf = (unsigned char *)malloc(rSize); // Get a Read Size
- grf_filelist = (unsigned char *)malloc(eSize); // Get a Extend Size
- fread(rBuf,1,rSize,fp);
- fclose(fp);
- decode_zip(grf_filelist, &eSize, rBuf, rSize); // Decode function
- list_size = eSize;
- free(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 %s is too long\n", fname);
- free(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);
- aentry.fnd = NULL;
-#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;
- }
- free(grf_filelist);
-
- } else { //****** Grf Other version ******
- fclose(fp);
- printf("GRF version %04x not supported\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)
-{
- char w1[256], w2[256], src[256], dst[256], restable[256], line[256];
- char *ptr, *buf;
- FILELIST *entry;
- int size, i = 0;
- FILE *fp;
-
- // read resnametable from data directory and return if successful
- sprintf(restable, "%sdata\\resnametable.txt", data_dir);
- for (ptr = &restable[0]; *ptr != 0; ptr++)
- if (*ptr == '\\') *ptr = '/';
-
- fp = fopen(restable,"rb");
- if (fp) {
- while (fgets(line, sizeof(line) - 1, fp)) {
- if (sscanf(line, "%[^#]#%[^#]#", w1, w2) == 2 &&
- // we only need the maps' GAT and RSW files
- (strstr(w2, ".gat") || strstr(w2, ".rsw")))
- {
- sprintf(src, "data\\%s", w1);
- sprintf(dst, "data\\%s", w2);
- entry = filelist_find(dst);
- // create new entries reusing the original's info
- if (entry != NULL) {
- FILELIST fentry;
- memcpy(&fentry, entry, sizeof(FILELIST));
- strncpy(fentry.fn, src, sizeof(fentry.fn) - 1);
- fentry.fnd = grfio_alloc_ptr(dst);
- filelist_modify(&fentry);
- i++;
- }
- }
- }
- fclose(fp);
- return; // we're done here!
- }
-
- // read resnametable from loaded GRF's, only if it cannot be
- // loaded from the data directory
- buf = (char *)grfio_reads("data\\resnametable.txt", &size);
- if (buf) {
- buf[size] = 0;
- ptr = buf;
-
- while (ptr - buf < size) {
- if (sscanf(ptr, "%[^#]#%[^#]#", w1, w2) == 2 &&
- (strstr(w2, ".gat") || strstr(w2, ".rsw")))
- {
- 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);
- fentry.fnd = grfio_alloc_ptr(dst);
- filelist_modify(&fentry);
- i++;
- }
- }
- ptr = strchr(ptr,'\n'); // Next line
- if (!ptr) break;
- ptr++;
- }
- free(buf);
- return;
- }
-
-}
-
-/*==========================================
- * Grfio : Resource add
- *------------------------------------------
- */
-#define GENTRY_ADDS 4 // The number increment of gentry_table entries
-
-static int grfio_add(char *fname)
-{
- grfio_alloc_ptr(fname);
-
- return grfio_entryread(fname, gentry_entrys - 1);
-}
-
-char *grfio_alloc_ptr(char *fname)
-{
- int len;
- char *buf;
-
- if (gentry_entrys >= GENTRY_LIMIT) {
- printf("GRF file entry limit reached!\n");
- exit(1);
- }
-
- if (gentry_entrys >= gentry_maxentry) {
- gentry_maxentry += GENTRY_ADDS;
- gentry_table = (char**)realloc(gentry_table, gentry_maxentry * sizeof(char*));
- memset(gentry_table + (gentry_maxentry - GENTRY_ADDS), 0, sizeof(char*) * GENTRY_ADDS);
- }
- len = strlen( fname );
- buf = (char*)malloc(len + 1);
- strcpy(buf, fname);
- gentry_table[gentry_entrys++] = buf;
-
- return buf;
-}
-
-/*==========================================
- * Grfio : Finalize
- *------------------------------------------
- */
-void grfio_final(void)
-{
- if (filelist != NULL)
- free(filelist);
-
- filelist_entrys = filelist_maxentry = 0;
-
- if (gentry_table != NULL) {
- int lop;
- for (lop = 0; lop < gentry_entrys; lop++) {
- if (gentry_table[lop] != NULL)
- free(gentry_table[lop]);
- }
- free(gentry_table);
- }
- gentry_table = NULL;
- gentry_entrys = gentry_maxentry = 0;
-}
-
-/*==========================================
- * Grfio : Initialize
- *------------------------------------------
- */
-void grfio_init(char *fname)
-{
- FILE *data_conf;
- char line[1024], w1[1024], w2[1024];
- int grf_num = 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) // GRF file
- grf_num += (grfio_add(w2) == 0);
- else if(strcmp(w1,"data_dir") == 0) // Data directory
- strcpy(data_dir, w2);
- }
- fclose(data_conf);
- } // end of reading grf-files.txt
-
- if (grf_num == 0) {
- printf("No GRF loaded, using default data directory\n");
- }
-
- // Unnecessary area release of filelist
- filelist_adjust();
- // Resource check
- grfio_resourcecheck();
-
- return;
-}
+// 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 + * 2006/04/16 ... fixed crash grfio_find_file when file is not found. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <malloc.h> +#include <sys/stat.h> + +#include "grfio.h" +#include "../common/mmo.h" +#include "../zlib/unzip.h" + +#define CHUNK 16384 + +#ifdef __WIN32 + #include "../zlib/zlib.h" + #include "../zlib/iowin32.h" +#else + #ifndef __FREEBSD__ + #include <zlib.h> + #endif +#endif + +typedef unsigned char BYTE; +typedef unsigned short WORD; +typedef unsigned long DWORD; + +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; + int cycle; + char type; + char fn[128-4*5]; // file name + char *fnd; + signed 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 512 +#define FILELIST_LIMIT 1048576 // 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; + +//---------------------------- +// 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[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]; + 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]; + } + } + 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]; + } + } + 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; + memset(&stream, 0, sizeof(stream)); + 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; +} + +/* =================================== +* 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) + return 0; + + if (unzLocateFile(uf, filename, 0) != UNZ_OK) + return 0; + + err = unzOpenCurrentFilePassword(uf, NULL); + + fout = fopen(filename,"wb"); + if (fout == NULL) + return 0; + + buf = (void *)malloc(size_buf); + do { + err = unzReadCurrentFile(uf, buf, size_buf); + if (err < 0) + break; + if (err > 0 && + fwrite(buf, err, 1, fout)!=1) + { + err = UNZ_ERRNO; + break; + } + } while (err > 0); + + if (fout) fclose(fout); + + if (err == UNZ_OK) { + err = unzCloseCurrentFile (uf); + free(buf); + return (err == UNZ_OK); + } + + unzCloseCurrentFile(uf); /* don't lose the error */ + + return 0; +} + +unsigned long grfio_crc32 (const unsigned char *buf, unsigned int len) +{ + return crc32(crc32(0L, Z_NULL, 0), buf, len); +} + +/*********************************************************** + *** File List Subroutines *** + ***********************************************************/ + +/*========================================== + * 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 + *------------------------------------------ + */ +static 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; +} + +char *grfio_find_file(char *fname){ + FILELIST *filelist = filelist_find(fname); + if (!filelist) return NULL; + return (!filelist->fnd?filelist->fn:filelist->fnd); +} + +/*========================================== + * 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("GRF filelist limit reached!\n"); + exit(1); + } + + if (filelist_entrys >= filelist_maxentry) { + filelist = (FILELIST *)realloc(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 *)realloc( + filelist, filelist_entrys * sizeof(FILELIST)); + filelist_maxentry = filelist_entrys; + } + } +} + +/*********************************************************** + *** Grfio Sobroutines *** + ***********************************************************/ + +/*========================================== + * 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], *p; + FILELIST lentry; + struct stat st; + + sprintf(lfname, "%s%s", data_dir, fname); + + 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.fnd = NULL; + 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; + FILELIST *entry; + unsigned char *buf2 = NULL; + + entry = filelist_find(fname); + + if (entry == NULL || entry->gentry <= 0) { // LocalFileCheck + char lfname[256], *p; + FILELIST lentry; + + sprintf(lfname, "%s%s", data_dir, fname); + + 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 *)malloc(lentry.declen + 1024); + fread(buf2, 1, lentry.declen, in); + fclose(in); + strncpy(lentry.fn, fname, sizeof(lentry.fn) - 1); + lentry.fnd = NULL; + 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 - 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 *)malloc(entry->srclen_aligned + 1024); + fseek(in, entry->srcpos, 0); + fread(buf, 1, entry->srclen_aligned, in); + fclose(in); + buf2 = (unsigned char *)malloc(entry->declen + 1024); + 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 mismatch err: %d != %d\n", (int)len, entry->declen); + free(buf); + free(buf2); + return NULL; + } + } else { + memcpy(buf2, buf, entry->declen); + } + free(buf); + } else { + printf("%s not found (grfio_reads - GRF file %s)\n", fname, gfname); + return NULL; + } + } + if (size != NULL && entry != NULL) + *size = entry->declen; + + return buf2; +} + +/*========================================== + * 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) { + printf("GRF data file not found: '%s'.\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); + printf("GRF %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 *) malloc(list_size); + 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("GRF file name %s is too long\n", fname); + free(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); + aentry.fnd = NULL; +#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; + } + free(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); + printf("Illegal data format: GRF compress entry size\n"); + return 4; + } + + rBuf = (unsigned char *)malloc(rSize); // Get a Read Size + grf_filelist = (unsigned char *)malloc(eSize); // Get a Extend Size + fread(rBuf,1,rSize,fp); + fclose(fp); + decode_zip(grf_filelist, &eSize, rBuf, rSize); // Decode function + list_size = eSize; + free(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 %s is too long\n", fname); + free(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); + aentry.fnd = NULL; +#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; + } + free(grf_filelist); + + } else { //****** Grf Other version ****** + fclose(fp); + printf("GRF version %04x not supported\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) +{ + char w1[256], w2[256], src[256], dst[256], restable[256], line[256]; + char *ptr, *buf; + FILELIST *entry; + int size, i = 0; + FILE *fp; + + // read resnametable from data directory and return if successful + sprintf(restable, "%sdata\\resnametable.txt", data_dir); + for (ptr = &restable[0]; *ptr != 0; ptr++) + if (*ptr == '\\') *ptr = '/'; + + fp = fopen(restable,"rb"); + if (fp) { + while (fgets(line, sizeof(line) - 1, fp)) { + if (sscanf(line, "%[^#]#%[^#]#", w1, w2) == 2 && + // we only need the maps' GAT and RSW files + (strstr(w2, ".gat") || strstr(w2, ".rsw"))) + { + sprintf(src, "data\\%s", w1); + sprintf(dst, "data\\%s", w2); + entry = filelist_find(dst); + // create new entries reusing the original's info + if (entry != NULL) { + FILELIST fentry; + memcpy(&fentry, entry, sizeof(FILELIST)); + strncpy(fentry.fn, src, sizeof(fentry.fn) - 1); + fentry.fnd = grfio_alloc_ptr(dst); + filelist_modify(&fentry); + i++; + } + } + } + fclose(fp); + return; // we're done here! + } + + // read resnametable from loaded GRF's, only if it cannot be + // loaded from the data directory + buf = (char *)grfio_reads("data\\resnametable.txt", &size); + if (buf) { + buf[size] = 0; + ptr = buf; + + while (ptr - buf < size) { + if (sscanf(ptr, "%[^#]#%[^#]#", w1, w2) == 2 && + (strstr(w2, ".gat") || strstr(w2, ".rsw"))) + { + 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); + fentry.fnd = grfio_alloc_ptr(dst); + filelist_modify(&fentry); + i++; + } + } + ptr = strchr(ptr,'\n'); // Next line + if (!ptr) break; + ptr++; + } + free(buf); + return; + } + +} + +/*========================================== + * Grfio : Resource add + *------------------------------------------ + */ +#define GENTRY_ADDS 4 // The number increment of gentry_table entries + +static int grfio_add(char *fname) +{ + grfio_alloc_ptr(fname); + + return grfio_entryread(fname, gentry_entrys - 1); +} + +char *grfio_alloc_ptr(char *fname) +{ + int len; + char *buf; + + if (gentry_entrys >= GENTRY_LIMIT) { + printf("GRF file entry limit reached!\n"); + exit(1); + } + + if (gentry_entrys >= gentry_maxentry) { + gentry_maxentry += GENTRY_ADDS; + gentry_table = (char**)realloc(gentry_table, gentry_maxentry * sizeof(char*)); + memset(gentry_table + (gentry_maxentry - GENTRY_ADDS), 0, sizeof(char*) * GENTRY_ADDS); + } + len = strlen( fname ); + buf = (char*)malloc(len + 1); + strcpy(buf, fname); + gentry_table[gentry_entrys++] = buf; + + return buf; +} + +/*========================================== + * Grfio : Finalize + *------------------------------------------ + */ +void grfio_final(void) +{ + if (filelist != NULL) + free(filelist); + + filelist_entrys = filelist_maxentry = 0; + + if (gentry_table != NULL) { + int lop; + for (lop = 0; lop < gentry_entrys; lop++) { + if (gentry_table[lop] != NULL) + free(gentry_table[lop]); + } + free(gentry_table); + } + gentry_table = NULL; + gentry_entrys = gentry_maxentry = 0; +} + +/*========================================== + * Grfio : Initialize + *------------------------------------------ + */ +void grfio_init(char *fname) +{ + FILE *data_conf; + char line[1024], w1[1024], w2[1024]; + int grf_num = 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) // GRF file + grf_num += (grfio_add(w2) == 0); + else if(strcmp(w1,"data_dir") == 0) // Data directory + strcpy(data_dir, w2); + } + fclose(data_conf); + } // end of reading grf-files.txt + + if (grf_num == 0) { + printf("No GRF loaded, using default data directory\n"); + } + + // Unnecessary area release of filelist + filelist_adjust(); + // Resource check + grfio_resourcecheck(); + + return; +} |