diff --git a/src/Makefile.am b/src/Makefile.am index 8e2cd442..d7494e2b 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -324,6 +324,7 @@ file_C = filegen.c \ file_ses.c \ file_sgcta.c \ file_shn.c \ + file_shp.c \ file_sib.c \ file_sig.c \ file_sit.c \ diff --git a/src/file_list.c b/src/file_list.c index 3173741e..f76403c5 100644 --- a/src/file_list.c +++ b/src/file_list.c @@ -854,6 +854,9 @@ extern const file_hint_t file_hint_sgcta; #if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_shn) extern const file_hint_t file_hint_shn; #endif +#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_shp) +extern const file_hint_t file_hint_shp; +#endif #if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_sib) extern const file_hint_t file_hint_sib; #endif @@ -1899,6 +1902,9 @@ file_enable_t array_file_enable[]= #if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_shn) { .enable=0, .file_hint=&file_hint_shn }, #endif +#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_shp) + { .enable=0, .file_hint=&file_hint_shp }, +#endif #if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_sib) { .enable=0, .file_hint=&file_hint_sib }, #endif diff --git a/src/file_shp.c b/src/file_shp.c new file mode 100644 index 00000000..47195a05 --- /dev/null +++ b/src/file_shp.c @@ -0,0 +1,84 @@ +/* + + File: file_shp.c + + Copyright (C) 2023 Grzegorz Szymaszek + + 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_shp) +#ifdef HAVE_CONFIG_H +#include +#endif +#ifdef HAVE_STRING_H +#include +#endif +#include +#include "types.h" +#include "filegen.h" +#include "common.h" + +static void register_header_check_shp(file_stat_t *file_stat); + +const file_hint_t file_hint_shp= { + .extension="shp", + .description="Shapefile", + .max_filesize=PHOTOREC_MAX_FILE_SIZE, + .recover=1, + .enable_by_default=1, + .register_header_check=®ister_header_check_shp +}; + +static const uint8_t shp_header[4] = {0x00, 0x00, 0x27, 0x0a}; + +/* https://en.wikipedia.org/wiki/Shapefile */ +struct shp_header +{ + int32_t magic; + int32_t reserved[5]; + int32_t size; + int32_t version; + int32_t shape_type; +} __attribute__ ((gcc_struct, __packed__)); + +static int header_check_shp(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 shp_header *shp=(const struct shp_header *)buffer; + (void) buffer_size; + (void) safe_header_only; + (void) file_recovery; + + if(buffer[0]!=0 || buffer[1]!=0 || buffer[2]!=0x27 || buffer[3]!=0x0a) + return 0; + if(be32(shp->size) >= 100) + { + reset_file_recovery(file_recovery_new); + file_recovery_new->extension=file_hint_shp.extension; + file_recovery_new->min_filesize=100; + file_recovery_new->calculated_file_size=(uint64_t)be32(shp->size); + file_recovery_new->data_check=&data_check_size; + file_recovery_new->file_check=&file_check_size; + return 1; + } + return 0; +} + +static void register_header_check_shp(file_stat_t *file_stat) +{ + register_header_check(0, shp_header, sizeof(shp_header), &header_check_shp, file_stat); +} +#endif