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-rw-r--r--src/Makefile.am1
-rw-r--r--src/file_icns.c122
-rw-r--r--src/file_list.c2
3 files changed, 125 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 4e1c49a..0b5c09e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -153,6 +153,7 @@ file_C = filegen.c \
file_hr9.c \
file_http.c \
file_icc.c \
+ file_icns.c \
file_ico.c \
file_ifo.c \
file_idx.c \
diff --git a/src/file_icns.c b/src/file_icns.c
new file mode 100644
index 0000000..20d5d12
--- /dev/null
+++ b/src/file_icns.c
@@ -0,0 +1,122 @@
+/*
+
+ File: file_icns.c
+
+ Copyright (C) 2015 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_icns(file_stat_t *file_stat);
+
+const file_hint_t file_hint_icns= {
+ .extension="icns",
+ .description="Apple Icon Image",
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_icns
+};
+
+struct icns_header
+{
+ uint32_t magic;
+ uint32_t size;
+};
+
+struct icon_data
+{
+ char type[4];
+ uint32_t size;
+ uint8_t data[0];
+};
+
+static int check_icon_type(const char *type)
+{
+ /* https://en.wikipedia.org/wiki/Apple_Icon_Image_format */
+ if(memcmp(type, "ICON", 4)==0 ||
+ memcmp(type, "ICN#", 4)==0 ||
+ memcmp(type, "icm#", 4)==0 ||
+ memcmp(type, "icm4", 4)==0 ||
+ memcmp(type, "icm8", 4)==0 ||
+ memcmp(type, "ics#", 4)==0 ||
+ memcmp(type, "ics4", 4)==0 ||
+ memcmp(type, "ics8", 4)==0 ||
+ memcmp(type, "is32", 4)==0 ||
+ memcmp(type, "s8mk", 4)==0 ||
+ memcmp(type, "icl4", 4)==0 ||
+ memcmp(type, "icl8", 4)==0 ||
+ memcmp(type, "il32", 4)==0 ||
+ memcmp(type, "l8mk", 4)==0 ||
+ memcmp(type, "ich#", 4)==0 ||
+ memcmp(type, "ich4", 4)==0 ||
+ memcmp(type, "ich8", 4)==0 ||
+ memcmp(type, "ih32", 4)==0 ||
+ memcmp(type, "h8mk", 4)==0 ||
+ memcmp(type, "it32", 4)==0 ||
+ memcmp(type, "t8mk", 4)==0 ||
+ memcmp(type, "icp4", 4)==0 ||
+ memcmp(type, "icp5", 4)==0 ||
+ memcmp(type, "icp6", 4)==0 ||
+ memcmp(type, "ic07", 4)==0 ||
+ memcmp(type, "ic08", 4)==0 ||
+ memcmp(type, "ic09", 4)==0 ||
+ memcmp(type, "ic10", 4)==0 ||
+ memcmp(type, "ic11", 4)==0 ||
+ memcmp(type, "ic12", 4)==0 ||
+ memcmp(type, "ic13", 4)==0 ||
+ memcmp(type, "ic14", 4)==0 ||
+ memcmp(type, "TOC ", 4)==0 ||
+ memcmp(type, "icnV", 4)==0)
+ return 1;
+ return 0;
+}
+
+static int header_check_icns(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 icns_header *hdr=(const struct icns_header *)buffer;
+ const struct icon_data *icon=(const struct icon_data *)&buffer[8];
+ if(be32(hdr->size) < sizeof(struct icns_header))
+ return 0;
+ if(be32(icon->size) < sizeof(struct icon_data))
+ return 0;
+ if(8 + be32(icon->size) > be32(hdr->size))
+ return 0;
+ if(!check_icon_type(icon->type))
+ return 0;
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_icns.extension;
+ file_recovery_new->calculated_file_size=be32(hdr->size);
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+}
+
+static void register_header_check_icns(file_stat_t *file_stat)
+{
+ register_header_check(0, "icns", 4, &header_check_icns, file_stat);
+}
diff --git a/src/file_list.c b/src/file_list.c
index ef2c2f0..86cf1f4 100644
--- a/src/file_list.c
+++ b/src/file_list.c
@@ -155,6 +155,7 @@ extern const file_hint_t file_hint_hfsp;
extern const file_hint_t file_hint_hr9;
extern const file_hint_t file_hint_http;
extern const file_hint_t file_hint_icc;
+extern const file_hint_t file_hint_icns;
extern const file_hint_t file_hint_ico;
extern const file_hint_t file_hint_idx;
extern const file_hint_t file_hint_ifo;
@@ -451,6 +452,7 @@ file_enable_t list_file_enable[]=
{ .enable=0, .file_hint=&file_hint_hr9 },
{ .enable=0, .file_hint=&file_hint_http },
{ .enable=0, .file_hint=&file_hint_icc },
+ { .enable=0, .file_hint=&file_hint_icns },
{ .enable=0, .file_hint=&file_hint_ico },
{ .enable=0, .file_hint=&file_hint_idx },
{ .enable=0, .file_hint=&file_hint_ifo },