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PhotoRec: recover PowerArchiver .pa files

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This commit is contained in:
Christophe Grenier 2022-07-14 10:17:59 +02:00
parent ab631fbeff
commit 97f517280d
3 changed files with 86 additions and 0 deletions
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1
src/Makefile.am
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@ -265,6 +265,7 @@ file_C = filegen.c \
file_ogg.c \
file_one.c \
file_orf.c \
file_pa.c \
file_paf.c \
file_pap.c \
file_par2.c \

6
src/file_list.c
View file

@ -679,6 +679,9 @@ extern const file_hint_t file_hint_one;
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_orf)
extern const file_hint_t file_hint_orf;
#endif
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_pa)
extern const file_hint_t file_hint_pa;
#endif
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_paf)
extern const file_hint_t file_hint_paf;
#endif
@ -1720,6 +1723,9 @@ file_enable_t array_file_enable[]=
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_orf)
{ .enable=0, .file_hint=&file_hint_orf },
#endif
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_pa)
{ .enable=0, .file_hint=&file_hint_pa },
#endif
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_paf)
{ .enable=0, .file_hint=&file_hint_paf },
#endif

79
src/file_pa.c Normal file
View file

@ -0,0 +1,79 @@
/*
File: file_pa.c
Copyright (C) 2022 Christophe GRENIER <grenier@cgsecurity.org>
This software 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.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_pa)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <stdio.h>
#include "types.h"
#include "filegen.h"
#include "common.h"
/*@ requires valid_register_header_check(file_stat); */
static void register_header_check_pa(file_stat_t *file_stat);
const file_hint_t file_hint_pa= {
.extension="pa",
.description="PowerArchiver",
.max_filesize=PHOTOREC_MAX_FILE_SIZE,
.recover=1,
.enable_by_default=1,
.register_header_check=&register_header_check_pa
};
struct pa_header
{
char magic[8];
uint32_t unk;
uint64_t size;
} __attribute__ ((gcc_struct, __packed__));
/*@
@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
@ ensures valid_header_check_result(\result, file_recovery_new);
@*/
static int header_check_pa(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
{
const struct pa_header *hdr=(const struct pa_header *)buffer;
const uint64_t size=le64(hdr->size);
if(size > PHOTOREC_MAX_FILE_SIZE)
return 0;
reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_pa.extension;
file_recovery_new->calculated_file_size=70+size;
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;
return 1;
}
static void register_header_check_pa(file_stat_t *file_stat)
{
static const unsigned char pa_header[8]= {
'P' , 'a' , 'F' , 'i' , 'L' , 'e' , 0x00, 0x04
};
register_header_check(0, pa_header, sizeof(pa_header), &header_check_pa, file_stat);
}
#endif