summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/Makefile.am1
-rw-r--r--src/file_dvi.c67
-rw-r--r--src/file_list.c2
3 files changed, 70 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 267a839..4390194 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -107,6 +107,7 @@ file_C = filegen.c \
file_dta.c \
file_dump.c \
file_dv.c \
+ file_dvi.c \
file_dvr.c \
file_dwg.c \
file_dxf.c \
diff --git a/src/file_dvi.c b/src/file_dvi.c
new file mode 100644
index 0000000..0458f67
--- /dev/null
+++ b/src/file_dvi.c
@@ -0,0 +1,67 @@
+/*
+
+ File: file_dvi.c
+
+ Copyright (C) 2016 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.
+
+ */
+
+#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"
+
+static void register_header_check_dvi(file_stat_t *file_stat);
+
+const file_hint_t file_hint_dvi= {
+ .extension="dvi",
+ .description="TeX DVI",
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_dvi
+};
+
+static int header_check_dvi(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)
+{
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_dvi.extension;
+ file_recovery_new->min_filesize=15+buffer[0x14]; /* 15 + comment size */
+ return 1;
+}
+
+static void register_header_check_dvi(file_stat_t *file_stat)
+{
+ static const unsigned char dvi_header[12]= {
+ 0xf7, // pre
+ 0x02, // version 2
+ // There are exactly 7227 TeX points in 254 centimeters,
+ // and TeX82 works with scaled points where there are 2^16 sp in a point,
+ // so TeX82 sets the following values
+ 0x01, 0x83, 0x92, 0xc0, // num=0x018392c0=25400000
+ 0x1c, 0x3b, 0x00, 0x00, // den=0x1c3b0000=7227*2^16=473628672
+ // mag
+ // comment size
+ // comment
+ };
+ register_header_check(0, dvi_header, sizeof(dvi_header), &header_check_dvi, file_stat);
+}
diff --git a/src/file_list.c b/src/file_list.c
index 4876540..35e6579 100644
--- a/src/file_list.c
+++ b/src/file_list.c
@@ -108,6 +108,7 @@ extern const file_hint_t file_hint_dst;
extern const file_hint_t file_hint_dta;
extern const file_hint_t file_hint_dump;
extern const file_hint_t file_hint_dv;
+extern const file_hint_t file_hint_dvi;
extern const file_hint_t file_hint_dvr;
extern const file_hint_t file_hint_dwg;
extern const file_hint_t file_hint_dxf;
@@ -427,6 +428,7 @@ file_enable_t list_file_enable[]=
{ .enable=0, .file_hint=&file_hint_dta },
{ .enable=0, .file_hint=&file_hint_dump },
{ .enable=0, .file_hint=&file_hint_dv },
+ { .enable=0, .file_hint=&file_hint_dvi },
{ .enable=0, .file_hint=&file_hint_dvr },
{ .enable=0, .file_hint=&file_hint_dwg },
{ .enable=0, .file_hint=&file_hint_dxf },