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authorChristophe Grenier <grenier@cgsecurity.org>2014-05-27 22:09:39 +0200
committerChristophe Grenier <grenier@cgsecurity.org>2014-05-27 22:09:39 +0200
commitd31e12877b07685243aa82e0804fe83881fa7c8a (patch)
treee311855722922de78655cbce5976ce708cfc3786 /src
parentbf789c2453dc0f006752dfc8f673948458cedd70 (diff)
PhotoRec: recover .woff Web Open Font Format
Diffstat (limited to 'src')
-rw-r--r--src/Makefile.am1
-rw-r--r--src/file_list.c2
-rw-r--r--src/file_woff.c83
3 files changed, 86 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 2a141df..7a7262d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -281,6 +281,7 @@ file_C = filegen.c \
file_wks.c \
file_wmf.c \
file_wnk.c \
+ file_woff.c \
file_wpb.c \
file_wpd.c \
file_wtv.c \
diff --git a/src/file_list.c b/src/file_list.c
index 0d1d2ec..f0dab38 100644
--- a/src/file_list.c
+++ b/src/file_list.c
@@ -284,6 +284,7 @@ extern const file_hint_t file_hint_win;
extern const file_hint_t file_hint_wks;
extern const file_hint_t file_hint_wmf;
extern const file_hint_t file_hint_wnk;
+extern const file_hint_t file_hint_woff;
extern const file_hint_t file_hint_wpb;
extern const file_hint_t file_hint_wpd;
extern const file_hint_t file_hint_wtv;
@@ -557,6 +558,7 @@ file_enable_t list_file_enable[]=
{ .enable=0, .file_hint=&file_hint_wks },
{ .enable=0, .file_hint=&file_hint_wmf },
{ .enable=0, .file_hint=&file_hint_wnk },
+ { .enable=0, .file_hint=&file_hint_woff },
{ .enable=0, .file_hint=&file_hint_wpb },
{ .enable=0, .file_hint=&file_hint_wpd },
{ .enable=0, .file_hint=&file_hint_wtv },
diff --git a/src/file_woff.c b/src/file_woff.c
new file mode 100644
index 0000000..b3fa2a3
--- /dev/null
+++ b/src/file_woff.c
@@ -0,0 +1,83 @@
+/*
+
+ File: file_woff.c
+
+ Copyright (C) 2014 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"
+#include "common.h"
+
+static void register_header_check_woff(file_stat_t *file_stat);
+
+const file_hint_t file_hint_woff= {
+ .extension="woff",
+ .description="Web Open Font Format",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_woff
+};
+
+struct WOFFHeader
+{
+ uint32_t signature;
+ uint32_t flavor;
+ uint32_t length;
+ uint16_t numTables;
+ uint16_t reserved;
+ uint32_t totalSfntSize;
+ uint16_t majorVersion;
+ uint16_t minorVersion;
+ uint32_t metaOffset;
+ uint32_t metaLength;
+ uint32_t metaOrigLength;
+ uint32_t privOffset;
+ uint32_t privLength;
+} __attribute__ ((__packed__));
+
+static int header_check_woff(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 WOFFHeader *woff=(const struct WOFFHeader *)buffer;
+ if(woff->reserved==0 &&
+ be32(woff->metaOffset) + be32(woff->metaLength)< be32(woff->length) &&
+ be32(woff->privOffset) + be32(woff->privLength)< be32(woff->length))
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_woff.extension;
+ file_recovery_new->calculated_file_size=(uint64_t)be32(woff->length);
+ 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_woff(file_stat_t *file_stat)
+{
+ register_header_check(0, "wOFF", 4, &header_check_woff, file_stat);
+}