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#include "progsint.h"
//#include "qcc.h"
#ifdef AVAIL_ZLIB
#ifdef _WIN32
#define ZEXPORT VARGS
#include "../libs/zlib.h"
//# pragma comment (lib, "zip/zlib.lib")
#else
#include <zlib.h>
#endif
#endif
char *QC_decode(progfuncs_t *progfuncs, int complen, int len, int method, char *info, char *buffer)
{
int i;
if (method == 0) //copy
{
if (complen != len) Sys_Error("lengths do not match");
memcpy(buffer, info, len);
}
else if (method == 1) //encryption
{
if (complen != len) Sys_Error("lengths do not match");
for (i = 0; i < len; i++)
buffer[i] = info[i] ^ 0xA5;
}
#ifdef AVAIL_ZLIB
else if (method == 2) //compression (ZLIB)
{
z_stream strm = {
info,
complen,
0,
buffer,
len,
0,
NULL,
NULL,
NULL,
NULL,
NULL,
Z_BINARY,
0,
0
};
inflateInit(&strm);
if (Z_STREAM_END != inflate(&strm, Z_FINISH)) //decompress it in one go.
Sys_Error("Failed block decompression\n");
inflateEnd(&strm);
}
#endif
//add your decryption/decompression routine here.
else
Sys_Error("Bad file encryption routine\n");
return buffer;
}
#ifndef MINIMAL
void SafeWrite(int hand, void *buf, long count);
int SafeSeek(int hand, int ofs, int mode);
//we are allowed to trash our input here.
int QC_encode(progfuncs_t *progfuncs, int len, int method, char *in, int handle)
{
int i;
if (method == 0) //copy
{
SafeWrite(handle, in, len);
return len;
}
else if (method == 1) //encryption
{
for (i = 0; i < len; i++)
in[i] = in[i] ^ 0xA5;
SafeWrite(handle, in, len);
return len;
}
#ifdef AVAIL_ZLIB
else if (method == 2) //compression (ZLIB)
{
char out[8192];
z_stream strm = {
in,
len,
0,
out,
sizeof(out),
0,
NULL,
NULL,
NULL,
NULL,
NULL,
Z_BINARY,
0,
0
};
i=0;
deflateInit(&strm, Z_BEST_COMPRESSION);
while(deflate(&strm, Z_FINISH) == Z_OK)
{
SafeWrite(handle, out, sizeof(out) - strm.avail_out); //compress in chunks of 8192. Saves having to allocate a huge-mega-big buffer
i+=sizeof(out) - strm.avail_out;
strm.next_out = out;
strm.avail_out = sizeof(out);
}
SafeWrite(handle, out, sizeof(out) - strm.avail_out);
i+=sizeof(out) - strm.avail_out;
deflateEnd(&strm);
return i;
}
#endif
//add your compression/decryption routine here.
else
{
Sys_Error("Wierd method");
return 0;
}
}
#endif
char *filefromprogs(progfuncs_t *progfuncs, progsnum_t prnum, char *fname, int *size, char *buffer)
{
int num;
includeddatafile_t *s;
if (!pr_progstate[prnum].progs)
return NULL;
if (pr_progstate[prnum].progs->version != PROG_EXTENDEDVERSION)
return NULL;
if (!pr_progstate[prnum].progs->secondaryversion != PROG_SECONDARYVERSION16 &&
!pr_progstate[prnum].progs->secondaryversion != PROG_SECONDARYVERSION32)
return NULL;
num = *(int*)((char *)pr_progstate[prnum].progs + pr_progstate[prnum].progs->ofsfiles);
s = (includeddatafile_t *)((char *)pr_progstate[prnum].progs + pr_progstate[prnum].progs->ofsfiles+4);
while(num>0)
{
if (!strcmp(s->filename, fname))
{
if (size)
*size = s->size;
if (!buffer)
return (char *)0xffffffff;
return QC_decode(progfuncs, s->compsize, s->size, s->compmethod, (char *)pr_progstate[prnum].progs+s->ofs, buffer);
}
s++;
num--;
}
if (size)
*size = 0;
return NULL;
}
#ifndef QCCONLY
char *filefromnewprogs(progfuncs_t *progfuncs, char *prname, char *fname, int *size, char *buffer)
{
int num;
includeddatafile_t *s;
progstate_t progs;
if (!PR_ReallyLoadProgs(progfuncs, prname, -1, &progs, false))
{
if (size)
*size = 0;
return NULL;
}
if (progs.progs->version < PROG_EXTENDEDVERSION)
return NULL;
if (!progs.progs->ofsfiles)
return NULL;
num = *(int*)((char *)progs.progs + progs.progs->ofsfiles);
s = (includeddatafile_t *)((char *)progs.progs + progs.progs->ofsfiles+4);
while(num>0)
{
if (!strcmp(s->filename, fname))
{
if (size)
*size = s->size;
if (!buffer)
return (char *)0xffffffff;
return QC_decode(progfuncs, s->compsize, s->size, s->compmethod, (char *)progs.progs+s->ofs, buffer);
}
s++;
num--;
}
if (size)
*size = 0;
return NULL;
}
#endif
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