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[gtpd-cvs] [libgpod] add hashAB support via external module
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From: Christophe F. <te...@us...> - 2011-01-01 14:07:38
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commit b9b83dc8b6c3d1f0c53ed32f05279ca838d54e02
Author: Nikias Bassen <ni...@gm...>
Date: Mon Oct 4 01:15:39 2010 +0200
add hashAB support via external module
configure.ac | 10 +++
src/Makefile.am | 2 +
src/db-itunes-parser.h | 2 +
src/itdb_device.c | 1 +
src/itdb_hashAB.c | 145 ++++++++++++++++++++++++++++++++++++++++++++++++
src/itdb_itunesdb.c | 30 +++++++---
src/itdb_private.h | 24 +++++---
src/itdb_sqlite.c | 54 +++++++++++++-----
8 files changed, 237 insertions(+), 31 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8704506..296f56e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -192,6 +192,16 @@ AC_SUBST(TMPMOUNTDIR)
AH_TEMPLATE([TMPMOUNTDIR], [Directory where HAL/udev will create a sub-directory to mount iPods])
AC_DEFINE_UNQUOTED(TMPMOUNTDIR, "$with_temp_mount_dir", [Directory where HAL/udev will create a sub-directory to mount iPods])
+dnl ***********************************************************************
+dnl * provide a $l{ibdir}/libgpod directory for external modules
+dnl ***********************************************************************
+AC_ARG_WITH(libgpod-blob-dir, [AC_HELP_STRING([--with-libgpod-blob-dir=PATH],
+ [Load libgpod binary blobs from this directory [LIBDIR/libgpod]])],
+ [],
+ [with_libgpod_blob_dir='${libdir}/libgpod'])
+LIBGPOD_BLOB_DIR=$with_libgpod_blob_dir
+AC_SUBST(LIBGPOD_BLOB_DIR)
+
dnl **************************************************
dnl * TagLib is only used by test-rebuild-db
dnl **************************************************
diff --git a/src/Makefile.am b/src/Makefile.am
index ce02831..90148f0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -11,6 +11,7 @@ libgpod_la_SOURCES = \
itdb_device.c \
itdb_hash58.c \
itdb_hash72.c \
+ itdb_hashAB.c \
itdb_iphone.c \
itdb_itunesdb.c \
itdb_photoalbum.c \
@@ -32,6 +33,7 @@ libgpod_la_CFLAGS = -DWITH_INTERNAL_GCHECKSUM
endif
libgpod_la_LDFLAGS = -version-info $(LIBGPOD_SO_VERSION) -no-undefined
+libgpod_la_CPPFLAGS = -DLIBGPOD_BLOB_DIR=\"$(LIBGPOD_BLOB_DIR)\"
libgpodincludebase = $(includedir)/gpod-1.0
libgpodincludedir = $(libgpodincludebase)/gpod
diff --git a/src/db-itunes-parser.h b/src/db-itunes-parser.h
index cc71bcc..80d5213 100644
--- a/src/db-itunes-parser.h
+++ b/src/db-itunes-parser.h
@@ -102,6 +102,8 @@ struct _MhbdHeader {
guint16 unk_0xa4;
guint16 unk_0xa6;
guint16 unk_0xa8;
+ guchar align_0xa9;
+ guchar hashAB[57];
guchar padding[];
} __attribute__((__packed__));
diff --git a/src/itdb_device.c b/src/itdb_device.c
index 42c4b23..f1aabad 100644
--- a/src/itdb_device.c
+++ b/src/itdb_device.c
@@ -1938,6 +1938,7 @@ G_GNUC_INTERNAL gboolean itdb_device_write_checksum (Itdb_Device *device,
case ITDB_CHECKSUM_HASH72:
return itdb_hash72_write_hash (device, itdb_data, itdb_len, error);
case ITDB_CHECKSUM_HASHAB:
+ return itdb_hashAB_write_hash (device, itdb_data, itdb_len, error);
case ITDB_CHECKSUM_UNKNOWN:
g_set_error (error, 0, -1, "Unsupported checksum type");
return FALSE;
diff --git a/src/itdb_hashAB.c b/src/itdb_hashAB.c
new file mode 100644
index 0000000..ce0f794
--- /dev/null
+++ b/src/itdb_hashAB.c
@@ -0,0 +1,145 @@
+/*
+| Copyright (c) 2010 Nikias Bassen <ni...@gm...>
+|
+| The code contained in this file is free software; you can redistribute
+| it and/or modify it under the terms of the GNU Lesser General Public
+| License as published by the Free Software Foundation; either version
+| 2.1 of the License, or (at your option) any later version.
+|
+| This file 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
+| Lesser General Public License for more details.
+|
+| You should have received a copy of the GNU Lesser General Public
+| License along with this code; if not, write to the Free Software
+| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+| USA
+|
+| iTunes and iPod are trademarks of Apple
+|
+| This product is not supported/written/published by Apple!
+*/
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include "rijndael.h"
+
+#include <glib/gstdio.h>
+
+#include <gmodule.h>
+
+#include "itdb_device.h"
+#include "db-itunes-parser.h"
+#include "itdb_private.h"
+
+typedef void (*calcHashAB_t)(unsigned char target[57], const unsigned char sha1[20], const unsigned char uuid[20], const unsigned char rnd_bytes[23]);
+static calcHashAB_t calc_hashAB = NULL;
+
+static gboolean load_libhashab()
+{
+ gchar *path;
+ GModule *handle;
+
+ if (!g_module_supported()) {
+ return FALSE;
+ }
+ path = g_module_build_path(LIBGPOD_BLOB_DIR, "hashab");
+ handle = g_module_open(path, G_MODULE_BIND_LAZY);
+ g_free(path);
+ if (!handle) {
+ return FALSE;
+ }
+
+ if (!g_module_symbol(handle, "calcHashAB", (void**)&calc_hashAB)) {
+ g_module_close(handle);
+ g_warning("symbol 'calcHashAB' not found");
+ return FALSE;
+ }
+ g_module_make_resident(handle);
+
+ printf("***** hashAB support successfully loaded *****\n");
+
+ return TRUE;
+}
+
+static void itdb_hashAB_compute_itunesdb_sha1 (unsigned char *itdb_data,
+ gsize itdb_len,
+ unsigned char sha1[20])
+{
+ guchar backup18[8];
+ guchar backup32[20];
+ guchar hashAB[57];
+ gsize sha1_len;
+ GChecksum *checksum;
+ MhbdHeader *header;
+
+ g_assert (itdb_len >= 0x6c);
+
+ header = (MhbdHeader *)itdb_data;
+ g_assert (strncmp (header->header_id, "mhbd", strlen ("mhbd")) == 0);
+ memcpy (backup18, &header->db_id, sizeof (backup18));
+ memcpy (backup32, &header->unk_0x32, sizeof (backup32));
+ memcpy (hashAB, &header->hashAB, sizeof (hashAB));
+
+ /* Those fields must be zero'ed out for the sha1 calculation */
+ memset(&header->db_id, 0, sizeof (header->db_id));
+
+ memset(&header->hash58, 0, sizeof (header->hash58));
+ memset(&header->hash72, 0, sizeof (header->hash72));
+ memset(&header->hashAB, 0, sizeof (header->hashAB));
+
+ sha1_len = g_checksum_type_get_length (G_CHECKSUM_SHA1);
+ checksum = g_checksum_new (G_CHECKSUM_SHA1);
+ g_checksum_update (checksum, itdb_data, itdb_len);
+ g_checksum_get_digest (checksum, sha1, &sha1_len);
+ g_checksum_free (checksum);
+
+ memcpy (&header->db_id, backup18, sizeof (backup18));
+ memcpy (&header->unk_0x32, backup32, sizeof (backup32));
+}
+
+gboolean itdb_hashAB_compute_hash_for_sha1 (const Itdb_Device *device,
+ const guchar sha1[20],
+ guchar signature[57],
+ GError **error)
+{
+ unsigned char uuid[20];
+ unsigned char rndpart[23] = "ABCDEFGHIJKLMNOPQRSTUVW";
+
+ if (calc_hashAB == NULL) {
+ if (!load_libhashab()) {
+ g_set_error (error, 0, -1, "Unsupported checksum type");
+ return FALSE;
+ }
+ }
+
+ if (!get_uuid(device, uuid)) return FALSE;
+
+ calc_hashAB(signature, sha1, uuid, rndpart);
+
+ return TRUE;
+}
+
+gboolean itdb_hashAB_write_hash (const Itdb_Device *device,
+ unsigned char *itdb_data,
+ gsize itdb_len,
+ GError **error)
+{
+ guchar sha1[20];
+ MhbdHeader *header;
+
+ if (itdb_len < 0xF4) {
+ g_set_error (error, 0, -1, "iTunesDB file too small to write checksum");
+ return FALSE;
+ }
+
+ header = (MhbdHeader *)itdb_data;
+ header->hashing_scheme = GUINT16_FROM_LE (ITDB_CHECKSUM_HASHAB);
+ itdb_hashAB_compute_itunesdb_sha1 (itdb_data, itdb_len, sha1);
+ return itdb_hashAB_compute_hash_for_sha1 (device, sha1, header->hashAB, error);
+}
diff --git a/src/itdb_itunesdb.c b/src/itdb_itunesdb.c
index 7f587bf..9ccf61a 100644
--- a/src/itdb_itunesdb.c
+++ b/src/itdb_itunesdb.c
@@ -3801,7 +3801,7 @@ static void mk_mhbd (FExport *fexp, guint32 children)
cts = fexp->wcontents;
put_header (cts, "mhbd");
- put32lint (cts, 188); /* header size */
+ put32lint (cts, 244); /* header size */
put32lint (cts, -1); /* size of whole mhdb -- fill in later */
if (itdb_device_supports_compressed_itunesdb (fexp->itdb->device)) {
/* 2 on iPhone 3.0 and Nano 5G, 1 on iPod Color and iPod Classic
@@ -3830,10 +3830,12 @@ static void mk_mhbd (FExport *fexp, guint32 children)
0x19 = iTunes 7.4
0x28 = iTunes 8.2.1
0x2a = iTunes 9.0.1
+ 0x2e = iTunes 9.1
+ 0x30 = iTunes 9.2
Be aware that newer ipods won't work if the library version number is too
old
*/
- fexp->itdb->version = 0x2a;
+ fexp->itdb->version = 0x30;
put32lint (cts, fexp->itdb->version);
put32lint (cts, children);
put64lint (cts, fexp->itdb->id);
@@ -3857,20 +3859,32 @@ static void mk_mhbd (FExport *fexp, guint32 children)
/* seen: 0x01 for iPod Color */
put32lint (cts, fexp->itdb->priv->unk_0x54); /* unknown: seen: 0x4d for nano 3G */
/* seen: 0x0f for iPod Color */
- put32_n0 (cts, 5); /* 20 bytes hash */
+ put32_n0 (cts, 5); /* 20 bytes hash58 */
put32lint (cts, fexp->itdb->tzoffset); /* timezone offset in seconds */
/* 0x70 */
- put16lint (cts, 2); /* without it, iTunes thinks iPhone databases
- are corrupted, 0 on iPod Color */
- put16lint (cts, 0);
- put32_n0 (cts, 11); /* new hash */
+ switch (itdb_device_get_checksum_type(fexp->itdb->device)) {
+ case ITDB_CHECKSUM_HASHAB:
+ put16lint (cts, 4); /* new on 4th gen iOS devices */
+ break;
+ case ITDB_CHECKSUM_HASH72:
+ put16lint (cts, 2);
+ break;
+ default:
+ put16lint (cts, 0);
+ break;
+ }
+ put16lint (cts, 0); /* hash72 */
+ put32_n0 (cts, 11); /* hash72 */
/* 0xa0 */
put16lint (cts, fexp->itdb->priv->audio_language); /* audio_language */
put16lint (cts, fexp->itdb->priv->subtitle_language); /* subtitle_language */
put16lint (cts, fexp->itdb->priv->unk_0xa4); /* unknown */
put16lint (cts, fexp->itdb->priv->unk_0xa6); /* unknown */
put16lint (cts, fexp->itdb->priv->unk_0xa8); /* unknown */
- put16lint (cts, 0);
+ put8int (cts, 0);
+ /* 0xab */
+ put8int (cts, 0); /* hashAB */
+ put32_n0 (cts, 14); /* hashAB */
put32_n0 (cts, 4); /* dummy space */
}
diff --git a/src/itdb_private.h b/src/itdb_private.h
index afc694e..56dd5d7 100644
--- a/src/itdb_private.h
+++ b/src/itdb_private.h
@@ -224,24 +224,32 @@ G_GNUC_INTERNAL gint itdb_get_max_photo_id ( Itdb_PhotoDB *db );
G_GNUC_INTERNAL Itdb_iTunesDB *db_get_itunesdb (Itdb_DB *db);
G_GNUC_INTERNAL Itdb_PhotoDB *db_get_photodb (Itdb_DB *db);
G_GNUC_INTERNAL gint itdb_thumb_get_byteorder (ItdbThumbFormat format);
-G_GNUC_INTERNAL time_t device_time_mac_to_time_t (Itdb_Device *device,
+G_GNUC_INTERNAL time_t device_time_mac_to_time_t (Itdb_Device *device,
guint64 mactime);
G_GNUC_INTERNAL guint64 device_time_time_t_to_mac (Itdb_Device *device,
time_t timet);
G_GNUC_INTERNAL gint itdb_musicdirs_number_by_mountpoint (const gchar *mountpoint);
G_GNUC_INTERNAL int itdb_sqlite_generate_itdbs(FExport *fexp);
-G_GNUC_INTERNAL gboolean itdb_hash72_extract_hash_info(const Itdb_Device *device,
- unsigned char *itdb_data,
+G_GNUC_INTERNAL gboolean itdb_hashAB_write_hash (const Itdb_Device *device,
+ unsigned char *itdb_data,
+ gsize itdb_len,
+ GError **error);
+G_GNUC_INTERNAL gboolean itdb_hash72_extract_hash_info(const Itdb_Device *device,
+ unsigned char *itdb_data,
gsize itdb_len);
-G_GNUC_INTERNAL gboolean itdb_hash72_write_hash (const Itdb_Device *device,
- unsigned char *itdb_data,
+G_GNUC_INTERNAL gboolean itdb_hash72_write_hash (const Itdb_Device *device,
+ unsigned char *itdb_data,
gsize itdb_len,
GError **error);
-G_GNUC_INTERNAL gboolean itdb_hash58_write_hash (Itdb_Device *device,
- unsigned char *itdb_data,
+G_GNUC_INTERNAL gboolean itdb_hash58_write_hash (Itdb_Device *device,
+ unsigned char *itdb_data,
gsize itdb_len,
GError **error);
-G_GNUC_INTERNAL gboolean itdb_hash72_compute_hash_for_sha1 (const Itdb_Device *device,
+G_GNUC_INTERNAL gboolean itdb_hashAB_compute_hash_for_sha1 (const Itdb_Device *device,
+ const guchar sha1[20],
+ guchar signature[57],
+ GError **error);
+G_GNUC_INTERNAL gboolean itdb_hash72_compute_hash_for_sha1 (const Itdb_Device *device,
const guchar sha1[20],
guchar signature[46],
GError **error);
diff --git a/src/itdb_sqlite.c b/src/itdb_sqlite.c
index a5a0738..4e0197a 100644
--- a/src/itdb_sqlite.c
+++ b/src/itdb_sqlite.c
@@ -2041,24 +2041,22 @@ error:
return FALSE;
}
-static const guint CBK_HEADER_SIZE = 46;
-
-static void cbk_calc_sha1_of_sha1s(GArray *cbk)
+static void cbk_calc_sha1_of_sha1s(GArray *cbk, guint cbk_header_size)
{
GChecksum *checksum;
unsigned char* final_sha1;
unsigned char* sha1s;
gsize final_sha1_len;
- g_assert (cbk->len > CBK_HEADER_SIZE + 20);
+ g_assert (cbk->len > cbk_header_size + 20);
- final_sha1 = &g_array_index(cbk, guchar, CBK_HEADER_SIZE);
- sha1s = &g_array_index(cbk, guchar, CBK_HEADER_SIZE + 20);
+ final_sha1 = &g_array_index(cbk, guchar, cbk_header_size);
+ sha1s = &g_array_index(cbk, guchar, cbk_header_size + 20);
final_sha1_len = g_checksum_type_get_length(G_CHECKSUM_SHA1);
g_assert (final_sha1_len == 20);
checksum = g_checksum_new(G_CHECKSUM_SHA1);
- g_checksum_update(checksum, sha1s, cbk->len - (CBK_HEADER_SIZE + 20));
+ g_checksum_update(checksum, sha1s, cbk->len - (cbk_header_size + 20));
g_checksum_get_digest(checksum, final_sha1, &final_sha1_len);
g_checksum_free(checksum);
}
@@ -2069,12 +2067,30 @@ static gboolean mk_Locations_cbk(Itdb_iTunesDB *itdb, const char *dirname)
char *cbk_filename;
GArray *cbk;
gboolean success;
- guchar *cbk_hash72;
+ guchar *cbk_hash;
guchar *final_sha1;
+ guint cbk_header_size = 0;
+ guint checksum_type;
+
+ checksum_type = itdb_device_get_checksum_type(itdb->device);
+ switch (checksum_type) {
+ case ITDB_CHECKSUM_HASHAB:
+ cbk_header_size = 57;
+ break;
+ case ITDB_CHECKSUM_HASH72:
+ cbk_header_size = 46;
+ break;
+ default:
+ break;
+ }
+ if (cbk_header_size == 0) {
+ fprintf(stderr, "ERROR: Unsupported checksum type '%d' in cbk file generation!\n", checksum_type);
+ return FALSE;
+ }
cbk = g_array_sized_new(FALSE, TRUE, 1,
- CBK_HEADER_SIZE + 20);
- g_array_set_size(cbk, CBK_HEADER_SIZE + 20);
+ cbk_header_size + 20);
+ g_array_set_size(cbk, cbk_header_size + 20);
locations_filename = g_build_filename(dirname, "Locations.itdb", NULL);
success = cbk_calc_sha1s(locations_filename, cbk);
@@ -2083,11 +2099,19 @@ static gboolean mk_Locations_cbk(Itdb_iTunesDB *itdb, const char *dirname)
g_array_free(cbk, TRUE);
return FALSE;
}
- cbk_calc_sha1_of_sha1s(cbk);
- final_sha1 = &g_array_index(cbk, guchar, CBK_HEADER_SIZE);
- cbk_hash72 = &g_array_index(cbk, guchar, 0);
- success = itdb_hash72_compute_hash_for_sha1 (itdb->device, final_sha1,
- cbk_hash72, NULL);
+ cbk_calc_sha1_of_sha1s(cbk, cbk_header_size);
+ final_sha1 = &g_array_index(cbk, guchar, cbk_header_size);
+ cbk_hash = &g_array_index(cbk, guchar, 0);
+ switch (checksum_type) {
+ case ITDB_CHECKSUM_HASHAB:
+ success = itdb_hashAB_compute_hash_for_sha1 (itdb->device, final_sha1, cbk_hash, NULL);
+ break;
+ case ITDB_CHECKSUM_HASH72:
+ success = itdb_hash72_compute_hash_for_sha1 (itdb->device, final_sha1, cbk_hash, NULL);
+ break;
+ default:
+ break;
+ }
if (!success) {
g_array_free(cbk, TRUE);
return FALSE;
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