summaryrefslogtreecommitdiff
path: root/src/common/grfio.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/common/grfio.c')
-rw-r--r--src/common/grfio.c1205
1 files changed, 595 insertions, 610 deletions
diff --git a/src/common/grfio.c b/src/common/grfio.c
index f86f9c1cb..8f430cfb9 100644
--- a/src/common/grfio.c
+++ b/src/common/grfio.c
@@ -16,18 +16,18 @@
#include <zlib.h>
//----------------------------
-// file entry table struct
+// file entry table struct
//----------------------------
typedef struct _FILELIST {
- int srclen; // compressed size
- int srclen_aligned;
- int declen; // original size
- int srcpos; // position of entry in grf
- int next; // index of next filelist entry with same hash (-1: end of entry chain)
- char type;
- char fn[128-4*5]; // file name
- char *fnd; // if the file was cloned, contains name of original file
- char gentry; // read grf file select
+ int srclen; // compressed size
+ int srclen_aligned;
+ int declen; // original size
+ int srcpos; // position of entry in grf
+ int next; // index of next filelist entry with same hash (-1: end of entry chain)
+ char type;
+ char fn[128-4*5]; // file name
+ char* fnd; // if the file was cloned, contains name of original file
+ char gentry; // read grf file select
} FILELIST;
#define FILELIST_TYPE_FILE 0x01 // entry is a file
@@ -45,33 +45,34 @@ typedef struct _FILELIST {
// stores info about every loaded file
-FILELIST *filelist = NULL;
-int filelist_entrys = 0;
-int filelist_maxentry = 0;
+FILELIST* filelist = NULL;
+int filelist_entrys = 0;
+int filelist_maxentry = 0;
// stores grf file names
-char **gentry_table = NULL;
-int gentry_entrys = 0;
-int gentry_maxentry = 0;
+char** gentry_table = NULL;
+int gentry_entrys = 0;
+int gentry_maxentry = 0;
// the path to the data directory
char data_dir[1024] = "";
// little endian char array to uint conversion
-static unsigned int getlong(unsigned char *p)
+static unsigned int getlong(unsigned char* p)
{
- return (p[0] << 0 | p[1] << 8 | p[2] << 16 | p[3] << 24);
+ return (p[0] << 0 | p[1] << 8 | p[2] << 16 | p[3] << 24);
}
-static void NibbleSwap(unsigned char *src, int len)
+static void NibbleSwap(unsigned char* src, int len)
{
- while (len > 0) {
- *src = (*src >> 4) | (*src << 4);
- ++src;
- --len;
- }
+ while( len > 0 )
+ {
+ *src = (*src >> 4) | (*src << 4);
+ ++src;
+ --len;
+ }
}
@@ -79,142 +80,114 @@ static void NibbleSwap(unsigned char *src, int len)
/// NOTE: Operation is symmetric (calling it twice gives back the original input).
static uint8_t grf_substitution(uint8_t in)
{
- uint8_t out;
-
- switch (in) {
- case 0x00:
- out = 0x2B;
- break;
- case 0x2B:
- out = 0x00;
- break;
- case 0x6C:
- out = 0x80;
- break;
- case 0x01:
- out = 0x68;
- break;
- case 0x68:
- out = 0x01;
- break;
- case 0x48:
- out = 0x77;
- break;
- case 0x60:
- out = 0xFF;
- break;
- case 0x77:
- out = 0x48;
- break;
- case 0xB9:
- out = 0xC0;
- break;
- case 0xC0:
- out = 0xB9;
- break;
- case 0xFE:
- out = 0xEB;
- break;
- case 0xEB:
- out = 0xFE;
- break;
- case 0x80:
- out = 0x6C;
- break;
- case 0xFF:
- out = 0x60;
- break;
- default:
- out = in;
- break;
- }
-
- return out;
+ uint8_t out;
+
+ switch( in )
+ {
+ case 0x00: out = 0x2B; break;
+ case 0x2B: out = 0x00; break;
+ case 0x6C: out = 0x80; break;
+ case 0x01: out = 0x68; break;
+ case 0x68: out = 0x01; break;
+ case 0x48: out = 0x77; break;
+ case 0x60: out = 0xFF; break;
+ case 0x77: out = 0x48; break;
+ case 0xB9: out = 0xC0; break;
+ case 0xC0: out = 0xB9; break;
+ case 0xFE: out = 0xEB; break;
+ case 0xEB: out = 0xFE; break;
+ case 0x80: out = 0x6C; break;
+ case 0xFF: out = 0x60; break;
+ default: out = in; break;
+ }
+
+ return out;
}
/* this is not used anywhere, is it ok to delete? */
//static void grf_shuffle_enc(BIT64* src) {
-// BIT64 out;
+// BIT64 out;
//
-// out.b[0] = src->b[3];
-// out.b[1] = src->b[4];
-// out.b[2] = src->b[5];
-// out.b[3] = src->b[0];
-// out.b[4] = src->b[1];
-// out.b[5] = src->b[6];
-// out.b[6] = src->b[2];
-// out.b[7] = grf_substitution(src->b[7]);
+// out.b[0] = src->b[3];
+// out.b[1] = src->b[4];
+// out.b[2] = src->b[5];
+// out.b[3] = src->b[0];
+// out.b[4] = src->b[1];
+// out.b[5] = src->b[6];
+// out.b[6] = src->b[2];
+// out.b[7] = grf_substitution(src->b[7]);
//
-// *src = out;
+// *src = out;
//}
-static void grf_shuffle_dec(BIT64 *src)
+static void grf_shuffle_dec(BIT64* src)
{
- BIT64 out;
-
- out.b[0] = src->b[3];
- out.b[1] = src->b[4];
- out.b[2] = src->b[6];
- out.b[3] = src->b[0];
- out.b[4] = src->b[1];
- out.b[5] = src->b[2];
- out.b[6] = src->b[5];
- out.b[7] = grf_substitution(src->b[7]);
-
- *src = out;
+ BIT64 out;
+
+ out.b[0] = src->b[3];
+ out.b[1] = src->b[4];
+ out.b[2] = src->b[6];
+ out.b[3] = src->b[0];
+ out.b[4] = src->b[1];
+ out.b[5] = src->b[2];
+ out.b[6] = src->b[5];
+ out.b[7] = grf_substitution(src->b[7]);
+
+ *src = out;
}
-static void grf_decode_header(unsigned char *buf, size_t len)
+static void grf_decode_header(unsigned char* buf, size_t len)
{
- BIT64 *p = (BIT64 *)buf;
- size_t nblocks = len / sizeof(BIT64);
- size_t i;
+ BIT64* p = (BIT64*)buf;
+ size_t nblocks = len / sizeof(BIT64);
+ size_t i;
- // first 20 blocks are all des-encrypted
- for (i = 0; i < 20 && i < nblocks; ++i)
- des_decrypt_block(&p[i]);
+ // first 20 blocks are all des-encrypted
+ for( i = 0; i < 20 && i < nblocks; ++i )
+ des_decrypt_block(&p[i]);
- // the rest is plaintext, done.
+ // the rest is plaintext, done.
}
-static void grf_decode_full(unsigned char *buf, size_t len, int cycle)
+static void grf_decode_full(unsigned char* buf, size_t len, int cycle)
{
- BIT64 *p = (BIT64 *)buf;
- size_t nblocks = len / sizeof(BIT64);
- int dcycle, scycle;
- size_t i, j;
-
- // first 20 blocks are all des-encrypted
- for (i = 0; i < 20 && i < nblocks; ++i)
- des_decrypt_block(&p[i]);
-
- // after that only one of every 'dcycle' blocks is des-encrypted
- dcycle = cycle;
-
- // and one of every 'scycle' plaintext blocks is shuffled (starting from the 0th but skipping the 0th)
- scycle = 7;
-
- // so decrypt/de-shuffle periodically
- j = -1; // 0, adjusted to fit the ++j step
- for (i = 20; i < nblocks; ++i) {
- if (i % dcycle == 0) {
- // decrypt block
- des_decrypt_block(&p[i]);
- continue;
- }
-
- ++j;
- if (j % scycle == 0 && j != 0) {
- // de-shuffle block
- grf_shuffle_dec(&p[i]);
- continue;
- }
-
- // plaintext, do nothing.
- }
+ BIT64* p = (BIT64*)buf;
+ size_t nblocks = len / sizeof(BIT64);
+ int dcycle, scycle;
+ size_t i, j;
+
+ // first 20 blocks are all des-encrypted
+ for( i = 0; i < 20 && i < nblocks; ++i )
+ des_decrypt_block(&p[i]);
+
+ // after that only one of every 'dcycle' blocks is des-encrypted
+ dcycle = cycle;
+
+ // and one of every 'scycle' plaintext blocks is shuffled (starting from the 0th but skipping the 0th)
+ scycle = 7;
+
+ // so decrypt/de-shuffle periodically
+ j = -1; // 0, adjusted to fit the ++j step
+ for( i = 20; i < nblocks; ++i )
+ {
+ if( i % dcycle == 0 )
+ {// decrypt block
+ des_decrypt_block(&p[i]);
+ continue;
+ }
+
+ ++j;
+ if( j % scycle == 0 && j != 0 )
+ {// de-shuffle block
+ grf_shuffle_dec(&p[i]);
+ continue;
+ }
+
+ // plaintext, do nothing.
+ }
}
@@ -223,35 +196,38 @@ static void grf_decode_full(unsigned char *buf, size_t len, int cycle)
/// @param len length of the data
/// @param entry_type flags associated with the data
/// @param entry_len true (unaligned) length of the data
-static void grf_decode(unsigned char *buf, size_t len, char entry_type, int entry_len)
+static void grf_decode(unsigned char* buf, size_t len, char entry_type, int entry_len)
{
- if (entry_type & FILELIST_TYPE_ENCRYPT_MIXED) {
- // fully encrypted
- int digits;
- int cycle;
- int i;
-
- // compute number of digits of the entry length
- digits = 1;
- for (i = 10; i <= entry_len; i *= 10)
- ++digits;
-
- // choose size of gap between two encrypted blocks
- // digits: 0 1 2 3 4 5 6 7 8 9 ...
- // cycle: 1 1 1 4 5 14 15 22 23 24 ...
- cycle = (digits < 3) ? 1
- : (digits < 5) ? digits + 1
- : (digits < 7) ? digits + 9
- : digits + 15;
-
- grf_decode_full(buf, len, cycle);
- } else if (entry_type & FILELIST_TYPE_ENCRYPT_HEADER) {
- // header encrypted
- grf_decode_header(buf, len);
- } else {
- // plaintext
- ;
- }
+ if( entry_type & FILELIST_TYPE_ENCRYPT_MIXED )
+ {// fully encrypted
+ int digits;
+ int cycle;
+ int i;
+
+ // compute number of digits of the entry length
+ digits = 1;
+ for( i = 10; i <= entry_len; i *= 10 )
+ ++digits;
+
+ // choose size of gap between two encrypted blocks
+ // digits: 0 1 2 3 4 5 6 7 8 9 ...
+ // cycle: 1 1 1 4 5 14 15 22 23 24 ...
+ cycle = ( digits < 3 ) ? 1
+ : ( digits < 5 ) ? digits + 1
+ : ( digits < 7 ) ? digits + 9
+ : digits + 15;
+
+ grf_decode_full(buf, len, cycle);
+ }
+ else
+ if( entry_type & FILELIST_TYPE_ENCRYPT_HEADER )
+ {// header encrypted
+ grf_decode_header(buf, len);
+ }
+ else
+ {// plaintext
+ ;
+ }
}
@@ -260,23 +236,23 @@ static void grf_decode(unsigned char *buf, size_t len, char entry_type, int entr
******************************************************/
/// zlib crc32
-unsigned long grfio_crc32(const unsigned char *buf, unsigned int len)
+unsigned long grfio_crc32(const unsigned char* buf, unsigned int len)
{
- return crc32(crc32(0L, Z_NULL, 0), buf, len);
+ return crc32(crc32(0L, Z_NULL, 0), buf, len);
}
/// zlib uncompress
-int decode_zip(void *dest, unsigned long *destLen, const void *source, unsigned long sourceLen)
+int decode_zip(void* dest, unsigned long* destLen, const void* source, unsigned long sourceLen)
{
- return uncompress((Bytef *)dest, destLen, (const Bytef *)source, sourceLen);
+ return uncompress((Bytef*)dest, destLen, (const Bytef*)source, sourceLen);
}
/// zlib compress
-int encode_zip(void *dest, unsigned long *destLen, const void *source, unsigned long sourceLen)
+int encode_zip(void* dest, unsigned long* destLen, const void* source, unsigned long sourceLen)
{
- return compress((Bytef *)dest, destLen, (const Bytef *)source, sourceLen);
+ return compress((Bytef*)dest, destLen, (const Bytef*)source, sourceLen);
}
@@ -289,94 +265,94 @@ int filelist_hash[256];
// initializes the table that holds the first elements of all hash chains
static void hashinit(void)
{
- int i;
- for (i = 0; i < 256; i++)
- filelist_hash[i] = -1;
+ int i;
+ for (i = 0; i < 256; i++)
+ filelist_hash[i] = -1;
}
// hashes a filename string into a number from {0..255}
-static int filehash(const char *fname)
+static int filehash(const char* fname)
{
- unsigned int hash = 0;
- while (*fname) {
- hash = (hash<<1) + (hash>>7)*9 + TOLOWER(*fname);
- fname++;
- }
- return hash & 255;
+ unsigned int hash = 0;
+ while(*fname) {
+ hash = (hash<<1) + (hash>>7)*9 + TOLOWER(*fname);
+ fname++;
+ }
+ return hash & 255;
}
// finds a FILELIST entry with the specified file name
-static FILELIST *filelist_find(const char *fname)
+static FILELIST* filelist_find(const char* fname)
{
- int hash, index;
+ int hash, index;
- if (!filelist)
- return NULL;
+ if (!filelist)
+ return NULL;
- hash = filelist_hash[filehash(fname)];
- for (index = hash; index != -1; index = filelist[index].next)
- if (!strcmpi(filelist[index].fn, fname))
- break;
+ hash = filelist_hash[filehash(fname)];
+ for (index = hash; index != -1; index = filelist[index].next)
+ if(!strcmpi(filelist[index].fn, fname))
+ break;
- return (index >= 0) ? &filelist[index] : NULL;
+ return (index >= 0) ? &filelist[index] : NULL;
}
// returns the original file name
-char *grfio_find_file(const char *fname)
+char* grfio_find_file(const char* fname)
{
- FILELIST *filelist = filelist_find(fname);
- if (!filelist) return NULL;
- return (!filelist->fnd ? filelist->fn : filelist->fnd);
+ FILELIST *filelist = filelist_find(fname);
+ if (!filelist) return NULL;
+ return (!filelist->fnd ? filelist->fn : filelist->fnd);
}
// adds a FILELIST entry into the list of loaded files
-static FILELIST *filelist_add(FILELIST *entry)
+static FILELIST* filelist_add(FILELIST* entry)
{
- int hash;
+ int hash;
-#define FILELIST_ADDS 1024 // number increment of file lists `
+ #define FILELIST_ADDS 1024 // number increment of file lists `
- 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;
- }
+ 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));
+ memcpy (&filelist[filelist_entrys], entry, sizeof(FILELIST));
- hash = filehash(entry->fn);
- filelist[filelist_entrys].next = filelist_hash[hash];
- filelist_hash[hash] = filelist_entrys;
+ hash = filehash(entry->fn);
+ filelist[filelist_entrys].next = filelist_hash[hash];
+ filelist_hash[hash] = filelist_entrys;
- filelist_entrys++;
+ filelist_entrys++;
- return &filelist[filelist_entrys - 1];
+ return &filelist[filelist_entrys - 1];
}
// adds a new FILELIST entry or overwrites an existing one
-static FILELIST *filelist_modify(FILELIST *entry)
+static FILELIST* filelist_modify(FILELIST* entry)
{
- FILELIST *fentry = filelist_find(entry->fn);
- if (fentry != NULL) {
- int tmp = fentry->next;
- memcpy(fentry, entry, sizeof(FILELIST));
- fentry->next = tmp;
- } else {
- fentry = filelist_add(entry);
- }
- return fentry;
+ FILELIST* fentry = filelist_find(entry->fn);
+ if (fentry != NULL) {
+ int tmp = fentry->next;
+ memcpy(fentry, entry, sizeof(FILELIST));
+ fentry->next = tmp;
+ } else {
+ fentry = filelist_add(entry);
+ }
+ return fentry;
}
// shrinks the file list array if too long
static void filelist_compact(void)
{
- if (filelist == NULL)
- return;
+ if (filelist == NULL)
+ return;
- if (filelist_entrys < filelist_maxentry) {
- filelist = (FILELIST *)aRealloc(filelist, filelist_entrys * sizeof(FILELIST));
- filelist_maxentry = filelist_entrys;
- }
+ if (filelist_entrys < filelist_maxentry) {
+ filelist = (FILELIST *)aRealloc(filelist, filelist_entrys * sizeof(FILELIST));
+ filelist_maxentry = filelist_entrys;
+ }
}
@@ -386,448 +362,457 @@ static void filelist_compact(void)
/// Combines are resource path with the data folder location to create local resource path.
-static void grfio_localpath_create(char *buffer, size_t size, const char *filename)
+static void grfio_localpath_create(char* buffer, size_t size, const char* filename)
{
- unsigned int i;
- size_t len;
-
- len = strlen(data_dir);
-
- if (data_dir[0] == '\0' || data_dir[len-1] == '/' || data_dir[len-1] == '\\') {
- safesnprintf(buffer, size, "%s%s", data_dir, filename);
- } else {
- safesnprintf(buffer, size, "%s/%s", data_dir, filename);
- }
-
- // normalize path
- for (i = 0; buffer[i] != '\0'; ++i)
- if (buffer[i] == '\\')
- buffer[i] = '/';
+ unsigned int i;
+ size_t len;
+
+ len = strlen(data_dir);
+
+ if( data_dir[0] == '\0' || data_dir[len-1] == '/' || data_dir[len-1] == '\\' )
+ {
+ safesnprintf(buffer, size, "%s%s", data_dir, filename);
+ }
+ else
+ {
+ safesnprintf(buffer, size, "%s/%s", data_dir, filename);
+ }
+
+ // normalize path
+ for( i = 0; buffer[i] != '\0'; ++i )
+ if( buffer[i] == '\\' )
+ buffer[i] = '/';
}
/// Reads a file into a newly allocated buffer (from grf or data directory).
-void *grfio_reads(const char *fname, int *size)
+void* grfio_reads(const char* fname, int* size)
{
- unsigned char *buf2 = NULL;
-
- FILELIST *entry = filelist_find(fname);
- if (entry == NULL || entry->gentry <= 0) { // LocalFileCheck
- char lfname[256];
- int declen;
- FILE *in;
- grfio_localpath_create(lfname, sizeof(lfname), (entry && entry->fnd) ? entry->fnd : fname);
-
- in = fopen(lfname, "rb");
- if (in != NULL) {
- fseek(in,0,SEEK_END);
- declen = ftell(in);
- fseek(in,0,SEEK_SET);
- buf2 = (unsigned char *)aMalloc(declen+1); // +1 for resnametable zero-termination
- if (fread(buf2, 1, declen, in) != declen) ShowError("An error occured in fread grfio_reads, fname=%s \n",fname);
- fclose(in);
-
- if (size)
- *size = declen;
- } else {
- if (entry != NULL && entry->gentry < 0) {
- entry->gentry = -entry->gentry; // local file checked
- } else {
- ShowError("grfio_reads: %s not found (local file: %s)\n", fname, lfname);
- return NULL;
- }
- }
- }
-
- if (entry != NULL && entry->gentry > 0) { // Archive[GRF] File Read
- char *grfname = gentry_table[entry->gentry - 1];
- FILE *in = fopen(grfname, "rb");
- if (in != NULL) {
- int fsize = entry->srclen_aligned;
- unsigned char *buf = (unsigned char *)aMalloc(fsize);
- fseek(in, entry->srcpos, 0);
- if (fread(buf, 1, fsize, in) != fsize) ShowError("An error occured in fread in grfio_reads, grfname=%s\n",grfname);
- fclose(in);
-
- buf2 = (unsigned char *)aMalloc(entry->declen+1); // +1 for resnametable zero-termination
- if (entry->type & FILELIST_TYPE_FILE) {
- // file
- uLongf len;
- grf_decode(buf, fsize, entry->type, entry->srclen);
- len = entry->declen;
- decode_zip(buf2, &len, buf, entry->srclen);
- if (len != (uLong)entry->declen) {
- ShowError("decode_zip size mismatch err: %d != %d\n", (int)len, entry->declen);
- aFree(buf);
- aFree(buf2);
- return NULL;
- }
- } else {// directory?
- memcpy(buf2, buf, entry->declen);
- }
-
- if (size)
- *size = entry->declen;
-
- aFree(buf);
- } else {
- ShowError("grfio_reads: %s not found (GRF file: %s)\n", fname, grfname);
- return NULL;
- }
- }
-
- return buf2;
+ unsigned char* buf2 = NULL;
+
+ FILELIST* entry = filelist_find(fname);
+ if( entry == NULL || entry->gentry <= 0 ) {// LocalFileCheck
+ char lfname[256];
+ int declen;
+ FILE* in;
+ grfio_localpath_create(lfname, sizeof(lfname), ( entry && entry->fnd ) ? entry->fnd : fname);
+
+ in = fopen(lfname, "rb");
+ if( in != NULL ) {
+ fseek(in,0,SEEK_END);
+ declen = ftell(in);
+ fseek(in,0,SEEK_SET);
+ buf2 = (unsigned char *)aMalloc(declen+1); // +1 for resnametable zero-termination
+ if(fread(buf2, 1, declen, in) != declen) ShowError("An error occured in fread grfio_reads, fname=%s \n",fname);
+ fclose(in);
+
+ if( size )
+ *size = declen;
+ } else {
+ if (entry != NULL && entry->gentry < 0) {
+ entry->gentry = -entry->gentry; // local file checked
+ } else {
+ ShowError("grfio_reads: %s not found (local file: %s)\n", fname, lfname);
+ return NULL;
+ }
+ }
+ }
+
+ if( entry != NULL && entry->gentry > 0 ) {// Archive[GRF] File Read
+ char* grfname = gentry_table[entry->gentry - 1];
+ FILE* in = fopen(grfname, "rb");
+ if( in != NULL ) {
+ int fsize = entry->srclen_aligned;
+ unsigned char *buf = (unsigned char *)aMalloc(fsize);
+ fseek(in, entry->srcpos, 0);
+ if(fread(buf, 1, fsize, in) != fsize) ShowError("An error occured in fread in grfio_reads, grfname=%s\n",grfname);
+ fclose(in);
+
+ buf2 = (unsigned char *)aMalloc(entry->declen+1); // +1 for resnametable zero-termination
+ if( entry->type & FILELIST_TYPE_FILE )
+ {// file
+ uLongf len;
+ grf_decode(buf, fsize, entry->type, entry->srclen);
+ len = entry->declen;
+ decode_zip(buf2, &len, buf, entry->srclen);
+ if (len != (uLong)entry->declen) {
+ ShowError("decode_zip size mismatch err: %d != %d\n", (int)len, entry->declen);
+ aFree(buf);
+ aFree(buf2);
+ return NULL;
+ }
+ } else {// directory?
+ memcpy(buf2, buf, entry->declen);
+ }
+
+ if( size )
+ *size = entry->declen;
+
+ aFree(buf);
+ } else {
+ ShowError("grfio_reads: %s not found (GRF file: %s)\n", fname, grfname);
+ return NULL;
+ }
+ }
+
+ return buf2;
}
/// Decodes encrypted filename from a version 01xx grf index.
-static char *decode_filename(unsigned char *buf, int len)
+static char* decode_filename(unsigned char* buf, int len)
{
- int lop;
- for (lop=0; lop<len; lop+=8) {
- NibbleSwap(&buf[lop],8);
- des_decrypt(&buf[lop],8);
- }
- return (char *)buf;
+ int lop;
+ for(lop=0;lop<len;lop+=8) {
+ NibbleSwap(&buf[lop],8);
+ des_decrypt(&buf[lop],8);
+ }
+ return (char*)buf;
}
/// Compares file extension against known large file types.
/// @return true if the file should undergo full mode 0 decryption, and true otherwise.
-static bool isFullEncrypt(const char *fname)
+static bool isFullEncrypt(const char* fname)
{
- static const char extensions[4][5] = { ".gnd", ".gat", ".act", ".str" };
- size_t i;
+ static const char extensions[4][5] = { ".gnd", ".gat", ".act", ".str" };
+ size_t i;
- const char *ext = strrchr(fname, '.');
- if (ext != NULL)
- for (i = 0; i < ARRAYLENGTH(extensions); ++i)
- if (strcmpi(ext, extensions[i]) == 0)
- return false;
+ const char* ext = strrchr(fname, '.');
+ if( ext != NULL )
+ for( i = 0; i < ARRAYLENGTH(extensions); ++i )
+ if( strcmpi(ext, extensions[i]) == 0 )
+ return false;
- return true;
+ return true;
}
/// Loads all entries in the specified grf file into the filelist.
/// @param gentry index of the grf file name in the gentry_table
-static int grfio_entryread(const char *grfname, int gentry)
+static int grfio_entryread(const char* grfname, int gentry)
{
- long grf_size,list_size;
- unsigned char grf_header[0x2e];
- int entry,entrys,ofs,grf_version;
- unsigned char *grf_filelist;
-
- FILE *fp = fopen(grfname, "rb");
- if (fp == NULL) {
- ShowWarning("GRF data file not found: '%s'\n",grfname);
- return 1; // 1:not found error
- } else
- ShowInfo("GRF data file found: '%s'\n",grfname);
-
- fseek(fp,0,SEEK_END);
- grf_size = ftell(fp);
- fseek(fp,0,SEEK_SET);
-
- if (fread(grf_header,1,0x2e,fp) != 0x2e) {
- ShowError("Couldn't read all grf_header element of %s \n", grfname);
- }
- if (strcmp((const char *)grf_header,"Master of Magic") != 0 || fseek(fp,getlong(grf_header+0x1e),SEEK_CUR) != 0) {
- fclose(fp);
- ShowError("GRF %s read error\n", grfname);
- 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 *) aMalloc(list_size);
- if (fread(grf_filelist,1,list_size,fp) != list_size) {
- ShowError("Couldn't read all grf_filelist element of %s \n", grfname);
- }
- fclose(fp);
-
- entrys = getlong(grf_header+0x26) - getlong(grf_header+0x22) - 7;
-
- // Get an entry
- for (entry = 0, ofs = 0; entry < entrys; ++entry) {
- FILELIST aentry;
-
- int ofs2 = ofs+getlong(grf_filelist+ofs)+4;
- unsigned char type = grf_filelist[ofs2+12];
- if (type & FILELIST_TYPE_FILE) {
- char *fname = decode_filename(grf_filelist+ofs+6, grf_filelist[ofs]-6);
- int srclen = getlong(grf_filelist+ofs2+0) - getlong(grf_filelist+ofs2+8) - 715;
-
- if (strlen(fname) > sizeof(aentry.fn) - 1) {
- ShowFatalError("GRF file name %s is too long\n", fname);
- aFree(grf_filelist);
- exit(EXIT_FAILURE);
- }
-
- type |= (isFullEncrypt(fname)) ? FILELIST_TYPE_ENCRYPT_MIXED : FILELIST_TYPE_ENCRYPT_HEADER;
-
- 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.type = type;
- safestrncpy(aentry.fn, fname, sizeof(aentry.fn));
- aentry.fnd = NULL;
-#ifdef GRFIO_LOCAL
- aentry.gentry = -(gentry+1); // As Flag for making it a negative number carrying out the first time LocalFileCheck
+ long grf_size,list_size;
+ unsigned char grf_header[0x2e];
+ int entry,entrys,ofs,grf_version;
+ unsigned char *grf_filelist;
+
+ FILE* fp = fopen(grfname, "rb");
+ if( fp == NULL ) {
+ ShowWarning("GRF data file not found: '%s'\n",grfname);
+ return 1; // 1:not found error
+ } else
+ ShowInfo("GRF data file found: '%s'\n",grfname);
+
+ fseek(fp,0,SEEK_END);
+ grf_size = ftell(fp);
+ fseek(fp,0,SEEK_SET);
+
+ if(fread(grf_header,1,0x2e,fp) != 0x2e) { ShowError("Couldn't read all grf_header element of %s \n", grfname); }
+ if( strcmp((const char*)grf_header,"Master of Magic") != 0 || fseek(fp,getlong(grf_header+0x1e),SEEK_CUR) != 0 ) {
+ fclose(fp);
+ ShowError("GRF %s read error\n", grfname);
+ 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 *) aMalloc(list_size);
+ if(fread(grf_filelist,1,list_size,fp) != list_size) { ShowError("Couldn't read all grf_filelist element of %s \n", grfname); }
+ fclose(fp);
+
+ entrys = getlong(grf_header+0x26) - getlong(grf_header+0x22) - 7;
+
+ // Get an entry
+ for( entry = 0, ofs = 0; entry < entrys; ++entry ) {
+ FILELIST aentry;
+
+ int ofs2 = ofs+getlong(grf_filelist+ofs)+4;
+ unsigned char type = grf_filelist[ofs2+12];
+ if( type & FILELIST_TYPE_FILE ) {
+ char* fname = decode_filename(grf_filelist+ofs+6, grf_filelist[ofs]-6);
+ int srclen = getlong(grf_filelist+ofs2+0) - getlong(grf_filelist+ofs2+8) - 715;
+
+ if( strlen(fname) > sizeof(aentry.fn) - 1 ) {
+ ShowFatalError("GRF file name %s is too long\n", fname);
+ aFree(grf_filelist);
+ exit(EXIT_FAILURE);
+ }
+
+ type |= ( isFullEncrypt(fname) ) ? FILELIST_TYPE_ENCRYPT_MIXED : FILELIST_TYPE_ENCRYPT_HEADER;
+
+ 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.type = type;
+ safestrncpy(aentry.fn, fname, sizeof(aentry.fn));
+ 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
+ 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;
-
- if (fread(eheader,1,8,fp) != 8) ShowError("An error occured in fread while reading eheader buffer\n");
- rSize = getlong(eheader); // Read Size
- eSize = getlong(eheader+4); // Extend Size
-
- if ((long)rSize > grf_size-ftell(fp)) {
- fclose(fp);
- ShowError("Illegal data format: GRF compress entry size\n");
- return 4;
- }
-
- rBuf = (unsigned char *)aMalloc(rSize); // Get a Read Size
- grf_filelist = (unsigned char *)aMalloc(eSize); // Get a Extend Size
- if (fread(rBuf,1,rSize,fp) != rSize) ShowError("An error occured in fread \n");
- fclose(fp);
- decode_zip(grf_filelist, &eSize, rBuf, rSize); // Decode function
- aFree(rBuf);
-
- entrys = getlong(grf_header+0x26) - 7;
-
- // Get an entry
- for (entry = 0, ofs = 0; entry < entrys; ++entry) {
- FILELIST aentry;
-
- char *fname = (char *)(grf_filelist+ofs);
- int ofs2 = ofs + (int)strlen(fname)+1;
- int type = grf_filelist[ofs2+12];
-
- if (strlen(fname) > sizeof(aentry.fn)-1) {
- ShowFatalError("GRF file name %s is too long\n", fname);
- aFree(grf_filelist);
- exit(EXIT_FAILURE);
- }
-
- if (type & FILELIST_TYPE_FILE) { // file
- aentry.srclen = getlong(grf_filelist+ofs2+0);
- aentry.srclen_aligned = getlong(grf_filelist+ofs2+4);
- aentry.declen = getlong(grf_filelist+ofs2+8);
- aentry.srcpos = getlong(grf_filelist+ofs2+13)+0x2e;
- aentry.type = type;
- safestrncpy(aentry.fn, fname, sizeof(aentry.fn));
- aentry.fnd = NULL;
-#ifdef GRFIO_LOCAL
- aentry.gentry = -(gentry+1); // As Flag for making it a negative number carrying out the first time LocalFileCheck
+ 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;
+
+ if(fread(eheader,1,8,fp) != 8) ShowError("An error occured in fread while reading eheader buffer\n");
+ rSize = getlong(eheader); // Read Size
+ eSize = getlong(eheader+4); // Extend Size
+
+ if( (long)rSize > grf_size-ftell(fp) ) {
+ fclose(fp);
+ ShowError("Illegal data format: GRF compress entry size\n");
+ return 4;
+ }
+
+ rBuf = (unsigned char *)aMalloc(rSize); // Get a Read Size
+ grf_filelist = (unsigned char *)aMalloc(eSize); // Get a Extend Size
+ if(fread(rBuf,1,rSize,fp) != rSize) ShowError("An error occured in fread \n");
+ fclose(fp);
+ decode_zip(grf_filelist, &eSize, rBuf, rSize); // Decode function
+ aFree(rBuf);
+
+ entrys = getlong(grf_header+0x26) - 7;
+
+ // Get an entry
+ for( entry = 0, ofs = 0; entry < entrys; ++entry ) {
+ FILELIST aentry;
+
+ char* fname = (char*)(grf_filelist+ofs);
+ int ofs2 = ofs + (int)strlen(fname)+1;
+ int type = grf_filelist[ofs2+12];
+
+ if( strlen(fname) > sizeof(aentry.fn)-1 ) {
+ ShowFatalError("GRF file name %s is too long\n", fname);
+ aFree(grf_filelist);
+ exit(EXIT_FAILURE);
+ }
+
+ if( type & FILELIST_TYPE_FILE ) {// file
+ aentry.srclen = getlong(grf_filelist+ofs2+0);
+ aentry.srclen_aligned = getlong(grf_filelist+ofs2+4);
+ aentry.declen = getlong(grf_filelist+ofs2+8);
+ aentry.srcpos = getlong(grf_filelist+ofs2+13)+0x2e;
+ aentry.type = type;
+ safestrncpy(aentry.fn, fname, sizeof(aentry.fn));
+ 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
+ aentry.gentry = gentry+1; // With no first time LocalFileCheck
#endif
- filelist_modify(&aentry);
- }
+ filelist_modify(&aentry);
+ }
- ofs = ofs2 + 17;
- }
+ ofs = ofs2 + 17;
+ }
- aFree(grf_filelist);
- } else {// ****** Grf Other version ******
- fclose(fp);
- ShowError("GRF version %04x not supported\n",getlong(grf_header+0x2a));
- return 4;
- }
+ aFree(grf_filelist);
+ } else {// ****** Grf Other version ******
+ fclose(fp);
+ ShowError("GRF version %04x not supported\n",getlong(grf_header+0x2a));
+ return 4;
+ }
- filelist_compact(); // Unnecessary area release of filelist
+ filelist_compact(); // Unnecessary area release of filelist
- return 0; // 0:no error
+ return 0; // 0:no error
}
-static bool grfio_parse_restable_row(const char *row)
+static bool grfio_parse_restable_row(const char* row)
{
- char w1[256], w2[256];
- char src[256], dst[256];
- char local[256];
- FILELIST *entry;
-
- if (sscanf(row, "%[^#\r\n]#%[^#\r\n]#", w1, w2) != 2)
- return false;
-
- if (strstr(w2, ".gat") == NULL && strstr(w2, ".rsw") == NULL)
- return false; // we only need the maps' GAT and RSW files
-
- sprintf(src, "data\\%s", w1);
- sprintf(dst, "data\\%s", w2);
-
- entry = filelist_find(dst);
- if (entry != NULL) {
- // alias for GRF resource
- FILELIST fentry;
- memcpy(&fentry, entry, sizeof(FILELIST));
- safestrncpy(fentry.fn, src, sizeof(fentry.fn));
- fentry.fnd = aStrdup(dst);
- filelist_modify(&fentry);
- return true;
- }
-
- grfio_localpath_create(local, sizeof(local), dst);
- if (exists(local)) {
- // alias for local resource
- FILELIST fentry;
- memset(&fentry, 0, sizeof(fentry));
- safestrncpy(fentry.fn, src, sizeof(fentry.fn));
- fentry.fnd = aStrdup(dst);
- filelist_modify(&fentry);
- return true;
- }
-
- return false;
+ char w1[256], w2[256];
+ char src[256], dst[256];
+ char local[256];
+ FILELIST* entry;
+
+ if( sscanf(row, "%[^#\r\n]#%[^#\r\n]#", w1, w2) != 2 )
+ return false;
+
+ if( strstr(w2, ".gat") == NULL && strstr(w2, ".rsw") == NULL )
+ return false; // we only need the maps' GAT and RSW files
+
+ sprintf(src, "data\\%s", w1);
+ sprintf(dst, "data\\%s", w2);
+
+ entry = filelist_find(dst);
+ if( entry != NULL )
+ {// alias for GRF resource
+ FILELIST fentry;
+ memcpy(&fentry, entry, sizeof(FILELIST));
+ safestrncpy(fentry.fn, src, sizeof(fentry.fn));
+ fentry.fnd = aStrdup(dst);
+ filelist_modify(&fentry);
+ return true;
+ }
+
+ grfio_localpath_create(local, sizeof(local), dst);
+ if( exists(local) )
+ {// alias for local resource
+ FILELIST fentry;
+ memset(&fentry, 0, sizeof(fentry));
+ safestrncpy(fentry.fn, src, sizeof(fentry.fn));
+ fentry.fnd = aStrdup(dst);
+ filelist_modify(&fentry);
+ return true;
+ }
+
+ return false;
}
/// Grfio Resource file check.
static void grfio_resourcecheck(void)
{
- char restable[256];
- char *ptr, *buf;
- int size;
- FILE *fp;
- int i = 0;
-
- // read resnametable from data directory and return if successful
- grfio_localpath_create(restable, sizeof(restable), "data\\resnametable.txt");
-
- fp = fopen(restable, "rb");
- if (fp != NULL) {
- char line[256];
- while (fgets(line, sizeof(line), fp)) {
- if (grfio_parse_restable_row(line))
- ++i;
- }
-
- fclose(fp);
- ShowStatus("Done reading '"CL_WHITE"%d"CL_RESET"' entries in '"CL_WHITE"%s"CL_RESET"'.\n", i, "resnametable.txt");
- 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 != NULL) {
- buf[size] = '\0';
-
- ptr = buf;
- while (ptr - buf < size) {
- if (grfio_parse_restable_row(ptr))
- ++i;
-
- ptr = strchr(ptr, '\n');
- if (ptr == NULL) break;
- ptr++;
- }
-
- aFree(buf);
- ShowStatus("Done reading '"CL_WHITE"%d"CL_RESET"' entries in '"CL_WHITE"%s"CL_RESET"'.\n", i, "data\\resnametable.txt");
- return;
- }
+ char restable[256];
+ char *ptr, *buf;
+ int size;
+ FILE* fp;
+ int i = 0;
+
+ // read resnametable from data directory and return if successful
+ grfio_localpath_create(restable, sizeof(restable), "data\\resnametable.txt");
+
+ fp = fopen(restable, "rb");
+ if( fp != NULL )
+ {
+ char line[256];
+ while( fgets(line, sizeof(line), fp) )
+ {
+ if( grfio_parse_restable_row(line) )
+ ++i;
+ }
+
+ fclose(fp);
+ ShowStatus("Done reading '"CL_WHITE"%d"CL_RESET"' entries in '"CL_WHITE"%s"CL_RESET"'.\n", i, "resnametable.txt");
+ 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 != NULL )
+ {
+ buf[size] = '\0';
+
+ ptr = buf;
+ while( ptr - buf < size )
+ {
+ if( grfio_parse_restable_row(ptr) )
+ ++i;
+
+ ptr = strchr(ptr, '\n');
+ if( ptr == NULL ) break;
+ ptr++;
+ }
+
+ aFree(buf);
+ ShowStatus("Done reading '"CL_WHITE"%d"CL_RESET"' entries in '"CL_WHITE"%s"CL_RESET"'.\n", i, "data\\resnametable.txt");
+ return;
+ }
}
/// Reads a grf file and adds it to the list.
-static int grfio_add(const char *fname)
+static int grfio_add(const char* fname)
{
- if (gentry_entrys >= gentry_maxentry) {
-#define GENTRY_ADDS 4 // The number increment of gentry_table entries
- 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);
- }
+ if( gentry_entrys >= gentry_maxentry )
+ {
+ #define GENTRY_ADDS 4 // The number increment of gentry_table entries
+ 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);
+ }
- gentry_table[gentry_entrys++] = aStrdup(fname);
+ gentry_table[gentry_entrys++] = aStrdup(fname);
- return grfio_entryread(fname, gentry_entrys - 1);
+ return grfio_entryread(fname, gentry_entrys - 1);
}
/// Finalizes grfio.
void grfio_final(void)
{
- if (filelist != NULL) {
- int i;
- for (i = 0; i < filelist_entrys; i++)
- if (filelist[i].fnd != NULL)
- aFree(filelist[i].fnd);
-
- aFree(filelist);
- filelist = NULL;
- }
- filelist_entrys = filelist_maxentry = 0;
-
- if (gentry_table != NULL) {
- int i;
- for (i = 0; i < gentry_entrys; i++)
- if (gentry_table[i] != NULL)
- aFree(gentry_table[i]);
-
- aFree(gentry_table);
- gentry_table = NULL;
- }
- gentry_entrys = gentry_maxentry = 0;
+ if (filelist != NULL) {
+ int i;
+ for (i = 0; i < filelist_entrys; i++)
+ if (filelist[i].fnd != NULL)
+ aFree(filelist[i].fnd);
+
+ aFree(filelist);
+ filelist = NULL;
+ }
+ filelist_entrys = filelist_maxentry = 0;
+
+ if (gentry_table != NULL) {
+ int i;
+ for (i = 0; i < gentry_entrys; i++)
+ if (gentry_table[i] != NULL)
+ aFree(gentry_table[i]);
+
+ aFree(gentry_table);
+ gentry_table = NULL;
+ }
+ gentry_entrys = gentry_maxentry = 0;
}
/// Initializes grfio.
-void grfio_init(const char *fname)
+void grfio_init(const char* fname)
{
- FILE *data_conf;
- int grf_num = 0;
-
- hashinit(); // hash table initialization
-
- data_conf = fopen(fname, "r");
- if (data_conf != NULL) {
- char line[1024];
- while (fgets(line, sizeof(line), data_conf)) {
- char w1[1024], w2[1024];
-
- if (line[0] == '/' && line[1] == '/')
- continue; // skip comments
-
- if (sscanf(line, "%[^:]: %[^\r\n]", w1, w2) != 2)
- continue; // skip unrecognized lines
-
- // Entry table reading
- if (strcmp(w1, "grf") == 0) { // GRF file
- if (grfio_add(w2) == 0)
- ++grf_num;
- } else if (strcmp(w1,"data_dir") == 0) { // Data directory
- safestrncpy(data_dir, w2, sizeof(data_dir));
- }
- }
-
- fclose(data_conf);
- ShowStatus("Done reading '"CL_WHITE"%s"CL_RESET"'.\n", fname);
- }
-
- if (grf_num == 0)
- ShowInfo("No GRF loaded, using default data directory\n");
-
- // Unneccessary area release of filelist
- filelist_compact();
-
- // Resource check
- grfio_resourcecheck();
+ FILE* data_conf;
+ int grf_num = 0;
+
+ hashinit(); // hash table initialization
+
+ data_conf = fopen(fname, "r");
+ if( data_conf != NULL )
+ {
+ char line[1024];
+ while( fgets(line, sizeof(line), data_conf) )
+ {
+ char w1[1024], w2[1024];
+
+ if( line[0] == '/' && line[1] == '/' )
+ continue; // skip comments
+
+ if( sscanf(line, "%[^:]: %[^\r\n]", w1, w2) != 2 )
+ continue; // skip unrecognized lines
+
+ // Entry table reading
+ if( strcmp(w1, "grf") == 0 ) // GRF file
+ {
+ if( grfio_add(w2) == 0 )
+ ++grf_num;
+ }
+ else if( strcmp(w1,"data_dir") == 0 ) // Data directory
+ {
+ safestrncpy(data_dir, w2, sizeof(data_dir));
+ }
+ }
+
+ fclose(data_conf);
+ ShowStatus("Done reading '"CL_WHITE"%s"CL_RESET"'.\n", fname);
+ }
+
+ if( grf_num == 0 )
+ ShowInfo("No GRF loaded, using default data directory\n");
+
+ // Unneccessary area release of filelist
+ filelist_compact();
+
+ // Resource check
+ grfio_resourcecheck();
}
generated by cgit v1.2.3-60-g2f50 (git 2.42.0) at 2024-06-28 14:29:59 +0000