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/***************************************************************************
* _______ _______ _______ *
* | ___ |____ | ___ | *
* | | |_| / /| | |_| *
* | |_____ / / | |_____ *
* |_____ | / / |_____ | *
* _ | | / / _ | | *
* | |___| |/ /____| |___| | *
* |_______|_______|_______| *
* *
* Wiimms SZS Tools *
* https://szs.wiimm.de/ *
* *
***************************************************************************
* *
* This file is part of the SZS project. *
* Visit https://szs.wiimm.de/ for project details and sources. *
* *
* Copyright (c) 2011-2023 by Dirk Clemens <wiimm@wiimm.de> *
* *
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* See file gpl-2.0.txt or http://www.gnu.org/licenses/gpl-2.0.txt *
* *
***************************************************************************/
#include "lib-pack.h"
//
///////////////////////////////////////////////////////////////////////////////
/////////////// IterateFilesPACK() ///////////////
///////////////////////////////////////////////////////////////////////////////
int IterateFilesPACK
(
struct szs_iterator_t *it, // iterator struct with all infos
bool term // true: termination hint
)
{
if (term)
return 0;
DASSERT(it);
DASSERT(it->func_it);
szs_file_t * szs = it->szs;
DASSERT(szs);
if ( !szs->data || szs->size <= sizeof(pack_header_t) )
return -1;
//--- analyze file header
const pack_header_t * pack = (pack_header_t*)szs->data;
const uint size = ntohl(pack->file_size);
const uint n_files = ntohl(pack->n_files);
const uint offset_metric = ntohl(pack->offset_metric);
if
( ntohl(pack->magic) != PACK_MAGIC_NUM
|| size < szs->size
|| offset_metric < 0x20
|| offset_metric + n_files * sizeof(pack_metric_t) >= size
)
return -1;
//--- cut file header
if (it->itpar.cut_files)
{
it->index = 0;
it->fst_item = 0;
it->is_dir = 0;
it->off = 0;
it->size = sizeof(pack_header_t);
StringCopyS(it->path,sizeof(it->path),".PACK.header");
it->func_it(it,false);
it->off = sizeof(pack_header_t);
it->size = offset_metric;
StringCopyS(it->path,sizeof(it->path),".PACK.filenames");
it->func_it(it,false);
it->off = offset_metric;
it->size = offset_metric + n_files * sizeof(pack_metric_t);
StringCopyS(it->path,sizeof(it->path),".PACK.metric");
it->func_it(it,false);
}
//--- sub files
const pack_metric_t *metric = (pack_metric_t*)(szs->data+offset_metric);
ccp name = pack->name_pool;
uint idx;
for ( idx = 0; idx < n_files; idx++, metric++ )
{
while ( *name == '/' ) // skip leading slashes (security)
name++;
StringCopyS(it->path,sizeof(it->path),name);
name += strlen(name) + 1;
it->index = idx+1;
it->fst_item = 0;
it->is_dir = 0;
it->off = ntohl(metric->offset);
if ( it->off >= size )
{
it->off = size;
it->size = 0;
}
else
{
it->size = ntohl(metric->size);
if ( it->size > size - it->off )
it->size = size - it->off;
}
it->func_it(it,false);
}
return 0;
}
///////////////////////////////////////////////////////////////////////////////
enumError CreatePACK
(
szs_file_t * szs, // valid szs
ccp source_dir, // NULL or path to source dir
u8 * source_data, // NULL or source data
u32 total_fsize, // total file size
SetupParam_t * setup_param // NULL or setup parameters
)
{
DASSERT(szs);
PRINT("CreatePACK() ndir=%d, totfsize=%x, align=%x,%x\n",
szs->subfile.used, total_fsize, opt_align_breff, opt_align_pack );
//--- setup
enumError max_err = ERR_OK;
const endian_func_t * endian = &be_func;
szs->endian = endian;
szs->fform_arch = FF_PACK;
szs->ff_attrib = GetAttribFF(szs->fform_arch);
SortSubFilesSZS(szs,SORT_AUTO);
if ( logging >= 2 )
{
printf("\nsorted file list:\n");
int i;
for ( i = 0; i < szs->subfile.used; i++ )
{
szs_subfile_t * f = szs->subfile.list + i;
printf("%3d.: %u %6x %6x %s\n", i, f->is_dir, f->offset, f->size, f->path );
}
}
//--- calc segment sizes and alloc data
u32 spool_size = 0, n_files = 0;
int i;
szs_subfile_t * fptr;
for ( i = 0, fptr = szs->subfile.list; i < szs->subfile.used; i++, fptr++ )
{
if (!fptr->is_dir)
{
n_files++;
spool_size += strlen(fptr->path) + 1;
}
}
spool_size = ALIGN32(spool_size,PACK_METRIC_ALIGN);
const u32 metric_offset = sizeof(pack_header_t) + spool_size;
const u32 metric_size
= ALIGN32( n_files * sizeof(pack_metric_t),
opt_align_pack > PACK_METRIC_ALIGN ? opt_align_pack : PACK_METRIC_ALIGN );
total_fsize = ALIGN32(total_fsize,opt_align_pack);
u32 file_offset = ALIGN32(metric_offset+metric_size,opt_align_pack);
szs->size = file_offset + total_fsize;
szs->data = CALLOC(1,szs->size);
noPRINT(">>> SIZE=%zu=%#zx, N=%u,%u\n",
szs->size, szs->size, n_files, szs->subfile.used );
//--- setup header
pack_header_t *ph = (pack_header_t*)szs->data;
ph->magic = htonl(PACK_MAGIC_NUM);
ph->file_size = htonl(szs->size);
ph->n_files = htonl(n_files);
ph->offset_metric = htonl(metric_offset);
//--- copy files
pack_metric_t *metric = (pack_metric_t*)(szs->data+metric_offset);
char *name = ph->name_pool;
char *name_end = (char*)metric;
for ( i = 0, fptr = szs->subfile.list; i < szs->subfile.used; i++, fptr++ )
{
MARK_USED(name,name_end);
if (!fptr->is_dir)
{
name = StringCopyE(name,name_end,fptr->path);
name++;
metric->offset = htonl(file_offset);
metric->size = htonl(fptr->size);
metric++;
if (fptr->data)
memcpy(szs->data + file_offset, fptr->data, fptr->size );
else
{
PRINT("LOAD: %x+%x %s\n",file_offset,fptr->size,fptr->path);
enumError err = LoadFILE( source_dir, fptr->path, 0,
szs->data + file_offset, fptr->size, 0, &szs->fatt, true );
if ( max_err < err )
max_err = err;
}
file_offset += ALIGN32(fptr->size,opt_align_pack);
}
}
return max_err;
}
//
///////////////////////////////////////////////////////////////////////////////
/////////////// END ///////////////
///////////////////////////////////////////////////////////////////////////////
|
