static gboolean
print_if_found (OstreeRepo *repo,
OstreeObjectType objtype,
const char *checksum,
gboolean *inout_was_found,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gboolean have_object = FALSE;
if (*inout_was_found)
return TRUE;
if (!ostree_repo_has_object (repo, objtype, checksum, &have_object,
cancellable, error))
goto out;
if (have_object)
{
if (!print_object (repo, objtype, checksum, error))
goto out;
*inout_was_found = TRUE;
}
ret = TRUE;
out:
return ret;
}
/**
* ostree_repo_prune_static_deltas:
* @self: Repo
* @commit: (allow-none): ASCII SHA256 checksum for commit, or %NULL for each
* non existing commit
* @cancellable: Cancellable
* @error: Error
*
* Prune static deltas, if COMMIT is specified then delete static delta files only
* targeting that commit; otherwise any static delta of non existing commits are
* deleted.
*
* Locking: exclusive
*/
gboolean
ostree_repo_prune_static_deltas (OstreeRepo *self, const char *commit,
GCancellable *cancellable,
GError **error)
{
g_autoptr(OstreeRepoAutoLock) lock =
_ostree_repo_auto_lock_push (self, OSTREE_REPO_LOCK_EXCLUSIVE, cancellable, error);
if (!lock)
return FALSE;
g_autoptr(GPtrArray) deltas = NULL;
if (!ostree_repo_list_static_delta_names (self, &deltas,
cancellable, error))
return FALSE;
for (guint i = 0; i < deltas->len; i++)
{
const char *deltaname = deltas->pdata[i];
const char *dash = strchr (deltaname, '-');
const char *to = NULL;
g_autofree char *from = NULL;
if (!dash)
{
to = deltaname;
}
else
{
from = g_strndup (deltaname, dash - deltaname);
to = dash + 1;
}
if (commit)
{
if (g_strcmp0 (to, commit))
continue;
}
else
{
gboolean have_commit;
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT,
to, &have_commit,
cancellable, error))
return FALSE;
if (have_commit)
continue;
}
g_debug ("Trying to prune static delta %s", deltaname);
g_autofree char *deltadir = _ostree_get_relative_static_delta_path (from, to, NULL);
if (!glnx_shutil_rm_rf_at (self->repo_dir_fd, deltadir,
cancellable, error))
return FALSE;
}
return TRUE;
}
gboolean
_ostree_repo_static_delta_part_have_all_objects (OstreeRepo *repo,
GVariant *checksum_array,
gboolean *out_have_all,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint8 *checksums_data;
guint i,n_checksums;
gboolean have_object = TRUE;
if (!_ostree_static_delta_parse_checksum_array (checksum_array,
&checksums_data,
&n_checksums,
error))
goto out;
for (i = 0; i < n_checksums; i++)
{
guint8 objtype = *checksums_data;
const guint8 *csum = checksums_data + 1;
char tmp_checksum[OSTREE_SHA256_STRING_LEN+1];
if (G_UNLIKELY(!ostree_validate_structureof_objtype (objtype, error)))
goto out;
ostree_checksum_inplace_from_bytes (csum, tmp_checksum);
if (!ostree_repo_has_object (repo, (OstreeObjectType) objtype, tmp_checksum,
&have_object, cancellable, error))
goto out;
if (!have_object)
break;
checksums_data += OSTREE_STATIC_DELTA_OBJTYPE_CSUM_LEN;
}
ret = TRUE;
*out_have_all = have_object;
out:
return ret;
}
static gboolean
scan_one_metadata_object (OtPullData *pull_data,
const guchar *csum,
OstreeObjectType objtype,
guint recursion_depth,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gs_unref_variant GVariant *object = NULL;
gs_free char *tmp_checksum = NULL;
gboolean is_requested;
gboolean is_stored;
tmp_checksum = ostree_checksum_from_bytes (csum);
object = ostree_object_name_serialize (tmp_checksum, objtype);
if (g_hash_table_lookup (pull_data->scanned_metadata, object))
return TRUE;
is_requested = g_hash_table_lookup (pull_data->requested_metadata, tmp_checksum) != NULL;
if (!ostree_repo_has_object (pull_data->repo, objtype, tmp_checksum, &is_stored,
cancellable, error))
goto out;
if (!is_stored && !is_requested)
{
char *duped_checksum = g_strdup (tmp_checksum);
g_hash_table_insert (pull_data->requested_metadata, duped_checksum, duped_checksum);
if (objtype == OSTREE_OBJECT_TYPE_COMMIT)
ot_waitable_queue_push (pull_data->metadata_objects_to_fetch,
pull_worker_message_new (PULL_MSG_FETCH_DETACHED_METADATA,
g_variant_ref (object)));
else
ot_waitable_queue_push (pull_data->metadata_objects_to_fetch,
pull_worker_message_new (PULL_MSG_FETCH,
g_variant_ref (object)));
}
else if (is_stored)
{
if (pull_data->transaction_resuming || is_requested)
{
switch (objtype)
{
case OSTREE_OBJECT_TYPE_COMMIT:
if (!scan_commit_object (pull_data, tmp_checksum, recursion_depth,
pull_data->cancellable, error))
goto out;
break;
case OSTREE_OBJECT_TYPE_DIR_META:
break;
case OSTREE_OBJECT_TYPE_DIR_TREE:
if (!scan_dirtree_object (pull_data, tmp_checksum, recursion_depth,
pull_data->cancellable, error))
goto out;
break;
case OSTREE_OBJECT_TYPE_FILE:
g_assert_not_reached ();
break;
}
}
g_hash_table_insert (pull_data->scanned_metadata, g_variant_ref (object), object);
g_atomic_int_inc (&pull_data->n_scanned_metadata);
}
ret = TRUE;
out:
return ret;
}
static gboolean
scan_dirtree_object (OtPullData *pull_data,
const char *checksum,
int recursion_depth,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int i, n;
gs_unref_variant GVariant *tree = NULL;
gs_unref_variant GVariant *files_variant = NULL;
gs_unref_variant GVariant *dirs_variant = NULL;
if (recursion_depth > OSTREE_MAX_RECURSION)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Exceeded maximum recursion");
goto out;
}
if (!ostree_repo_load_variant (pull_data->repo, OSTREE_OBJECT_TYPE_DIR_TREE, checksum,
&tree, error))
goto out;
/* PARSE OSTREE_SERIALIZED_TREE_VARIANT */
files_variant = g_variant_get_child_value (tree, 0);
dirs_variant = g_variant_get_child_value (tree, 1);
n = g_variant_n_children (files_variant);
for (i = 0; i < n; i++)
{
const char *filename;
gboolean file_is_stored;
gs_unref_variant GVariant *csum = NULL;
gs_free char *file_checksum = NULL;
g_variant_get_child (files_variant, i, "(&s@ay)", &filename, &csum);
if (!ot_util_filename_validate (filename, error))
goto out;
file_checksum = ostree_checksum_from_bytes_v (csum);
if (!ostree_repo_has_object (pull_data->repo, OSTREE_OBJECT_TYPE_FILE, file_checksum,
&file_is_stored, cancellable, error))
goto out;
if (!file_is_stored && !g_hash_table_lookup (pull_data->requested_content, file_checksum))
{
g_hash_table_insert (pull_data->requested_content, file_checksum, file_checksum);
ot_waitable_queue_push (pull_data->metadata_objects_to_fetch,
pull_worker_message_new (PULL_MSG_FETCH,
ostree_object_name_serialize (file_checksum, OSTREE_OBJECT_TYPE_FILE)));
file_checksum = NULL; /* Transfer ownership to hash */
}
}
n = g_variant_n_children (dirs_variant);
for (i = 0; i < n; i++)
{
const char *dirname;
gs_unref_variant GVariant *tree_csum = NULL;
gs_unref_variant GVariant *meta_csum = NULL;
g_variant_get_child (dirs_variant, i, "(&s@ay@ay)",
&dirname, &tree_csum, &meta_csum);
if (!ot_util_filename_validate (dirname, error))
goto out;
if (!scan_one_metadata_object (pull_data, ostree_checksum_bytes_peek (tree_csum),
OSTREE_OBJECT_TYPE_DIR_TREE, recursion_depth + 1,
cancellable, error))
goto out;
if (!scan_one_metadata_object (pull_data, ostree_checksum_bytes_peek (meta_csum),
OSTREE_OBJECT_TYPE_DIR_META, recursion_depth + 1,
cancellable, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
/**
* ostree_repo_static_delta_execute_offline:
* @self: Repo
* @dir_or_file: Path to a directory containing static delta data, or directly to the superblock
* @skip_validation: If %TRUE, assume data integrity
* @cancellable: Cancellable
* @error: Error
*
* Given a directory representing an already-downloaded static delta
* on disk, apply it, generating a new commit. The directory must be
* named with the form "FROM-TO", where both are checksums, and it
* must contain a file named "superblock", along with at least one part.
*/
gboolean
ostree_repo_static_delta_execute_offline (OstreeRepo *self,
GFile *dir_or_file,
gboolean skip_validation,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint i, n;
const char *dir_or_file_path = NULL;
glnx_fd_close int meta_fd = -1;
glnx_fd_close int dfd = -1;
g_autoptr(GVariant) meta = NULL;
g_autoptr(GVariant) headers = NULL;
g_autoptr(GVariant) metadata = NULL;
g_autoptr(GVariant) fallback = NULL;
g_autofree char *to_checksum = NULL;
g_autofree char *from_checksum = NULL;
g_autofree char *basename = NULL;
dir_or_file_path = gs_file_get_path_cached (dir_or_file);
/* First, try opening it as a directory */
dfd = glnx_opendirat_with_errno (AT_FDCWD, dir_or_file_path, TRUE);
if (dfd < 0)
{
if (errno != ENOTDIR)
{
glnx_set_error_from_errno (error);
goto out;
}
else
{
g_autofree char *dir = dirname (g_strdup (dir_or_file_path));
basename = g_path_get_basename (dir_or_file_path);
if (!glnx_opendirat (AT_FDCWD, dir, TRUE, &dfd, error))
goto out;
}
}
else
basename = g_strdup ("superblock");
meta_fd = openat (dfd, basename, O_RDONLY | O_CLOEXEC);
if (meta_fd < 0)
{
glnx_set_error_from_errno (error);
goto out;
}
if (!ot_util_variant_map_fd (meta_fd, 0, G_VARIANT_TYPE (OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT),
FALSE, &meta, error))
goto out;
/* Parsing OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT */
metadata = g_variant_get_child_value (meta, 0);
/* Write the to-commit object */
{
g_autoptr(GVariant) to_csum_v = NULL;
g_autoptr(GVariant) from_csum_v = NULL;
g_autoptr(GVariant) to_commit = NULL;
gboolean have_to_commit;
gboolean have_from_commit;
to_csum_v = g_variant_get_child_value (meta, 3);
if (!ostree_validate_structureof_csum_v (to_csum_v, error))
goto out;
to_checksum = ostree_checksum_from_bytes_v (to_csum_v);
from_csum_v = g_variant_get_child_value (meta, 2);
if (g_variant_n_children (from_csum_v) > 0)
{
if (!ostree_validate_structureof_csum_v (from_csum_v, error))
goto out;
from_checksum = ostree_checksum_from_bytes_v (from_csum_v);
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT, from_checksum,
&have_from_commit, cancellable, error))
goto out;
if (!have_from_commit)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Commit %s, which is the delta source, is not in repository", from_checksum);
goto out;
}
}
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT, to_checksum,
&have_to_commit, cancellable, error))
goto out;
if (!have_to_commit)
{
g_autofree char *detached_path = _ostree_get_relative_static_delta_path (from_checksum, to_checksum, "commitmeta");
g_autoptr(GVariant) detached_data = NULL;
detached_data = g_variant_lookup_value (metadata, detached_path, G_VARIANT_TYPE("a{sv}"));
if (detached_data && !ostree_repo_write_commit_detached_metadata (self,
to_checksum,
detached_data,
cancellable,
error))
goto out;
to_commit = g_variant_get_child_value (meta, 4);
if (!ostree_repo_write_metadata (self, OSTREE_OBJECT_TYPE_COMMIT,
to_checksum, to_commit, NULL,
cancellable, error))
goto out;
}
}
fallback = g_variant_get_child_value (meta, 7);
if (g_variant_n_children (fallback) > 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Cannot execute delta offline: contains nonempty http fallback entries");
goto out;
}
headers = g_variant_get_child_value (meta, 6);
n = g_variant_n_children (headers);
for (i = 0; i < n; i++)
{
guint32 version;
guint64 size;
guint64 usize;
const guchar *csum;
char checksum[OSTREE_SHA256_STRING_LEN+1];
gboolean have_all;
g_autoptr(GInputStream) part_in = NULL;
g_autoptr(GVariant) inline_part_data = NULL;
g_autoptr(GVariant) header = NULL;
g_autoptr(GVariant) csum_v = NULL;
g_autoptr(GVariant) objects = NULL;
g_autoptr(GVariant) part = NULL;
g_autofree char *deltapart_path = NULL;
OstreeStaticDeltaOpenFlags delta_open_flags =
skip_validation ? OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM : 0;
header = g_variant_get_child_value (headers, i);
g_variant_get (header, "(u@aytt@ay)", &version, &csum_v, &size, &usize, &objects);
if (version > OSTREE_DELTAPART_VERSION)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Delta part has too new version %u", version);
goto out;
}
if (!_ostree_repo_static_delta_part_have_all_objects (self, objects, &have_all,
cancellable, error))
goto out;
/* If we already have these objects, don't bother executing the
* static delta.
*/
if (have_all)
continue;
csum = ostree_checksum_bytes_peek_validate (csum_v, error);
if (!csum)
goto out;
ostree_checksum_inplace_from_bytes (csum, checksum);
deltapart_path =
_ostree_get_relative_static_delta_part_path (from_checksum, to_checksum, i);
inline_part_data = g_variant_lookup_value (metadata, deltapart_path, G_VARIANT_TYPE("(yay)"));
if (inline_part_data)
{
g_autoptr(GBytes) inline_part_bytes = g_variant_get_data_as_bytes (inline_part_data);
part_in = g_memory_input_stream_new_from_bytes (inline_part_bytes);
/* For inline parts, we don't checksum, because it's
* included with the metadata, so we're not trying to
* protect against MITM or such. Non-security related
* checksums should be done at the underlying storage layer.
*/
delta_open_flags |= OSTREE_STATIC_DELTA_OPEN_FLAGS_SKIP_CHECKSUM;
if (!_ostree_static_delta_part_open (part_in, inline_part_bytes,
delta_open_flags,
NULL,
&part,
cancellable, error))
goto out;
}
else
{
g_autofree char *relpath = g_strdup_printf ("%u", i); /* TODO avoid malloc here */
glnx_fd_close int part_fd = openat (dfd, relpath, O_RDONLY | O_CLOEXEC);
if (part_fd < 0)
{
glnx_set_error_from_errno (error);
g_prefix_error (error, "Opening deltapart '%s': ", deltapart_path);
goto out;
}
part_in = g_unix_input_stream_new (part_fd, FALSE);
if (!_ostree_static_delta_part_open (part_in, NULL,
delta_open_flags,
checksum,
&part,
cancellable, error))
goto out;
}
if (!_ostree_static_delta_part_execute (self, objects, part, skip_validation,
NULL, cancellable, error))
{
g_prefix_error (error, "Executing delta part %i: ", i);
goto out;
}
}
ret = TRUE;
out:
return ret;
}
/**
* ostree_repo_static_delta_execute_offline:
* @self: Repo
* @dir: Path to a directory containing static delta data
* @skip_validation: If %TRUE, assume data integrity
* @cancellable: Cancellable
* @error: Error
*
* Given a directory representing an already-downloaded static delta
* on disk, apply it, generating a new commit. The directory must be
* named with the form "FROM-TO", where both are checksums, and it
* must contain a file named "superblock", along with at least one part.
*/
gboolean
ostree_repo_static_delta_execute_offline (OstreeRepo *self,
GFile *dir,
gboolean skip_validation,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
guint i, n;
gs_unref_object GFile *meta_file = g_file_get_child (dir, "superblock");
gs_unref_variant GVariant *meta = NULL;
gs_unref_variant GVariant *headers = NULL;
gs_unref_variant GVariant *fallback = NULL;
if (!ot_util_variant_map (meta_file, G_VARIANT_TYPE (OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT),
FALSE, &meta, error))
goto out;
/* Parsing OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT */
/* Write the to-commit object */
{
gs_unref_variant GVariant *to_csum_v = NULL;
gs_free char *to_checksum = NULL;
gs_unref_variant GVariant *to_commit = NULL;
gboolean have_to_commit;
to_csum_v = g_variant_get_child_value (meta, 3);
if (!ostree_validate_structureof_csum_v (to_csum_v, error))
goto out;
to_checksum = ostree_checksum_from_bytes_v (to_csum_v);
if (!ostree_repo_has_object (self, OSTREE_OBJECT_TYPE_COMMIT, to_checksum,
&have_to_commit, cancellable, error))
goto out;
if (!have_to_commit)
{
to_commit = g_variant_get_child_value (meta, 4);
if (!ostree_repo_write_metadata (self, OSTREE_OBJECT_TYPE_COMMIT,
to_checksum, to_commit, NULL,
cancellable, error))
goto out;
}
}
fallback = g_variant_get_child_value (meta, 7);
if (g_variant_n_children (fallback) > 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Cannot execute delta offline: contains nonempty http fallback entries");
goto out;
}
headers = g_variant_get_child_value (meta, 6);
n = g_variant_n_children (headers);
for (i = 0; i < n; i++)
{
guint64 size;
guint64 usize;
const guchar *csum;
gboolean have_all;
gs_unref_variant GVariant *header = NULL;
gs_unref_variant GVariant *csum_v = NULL;
gs_unref_variant GVariant *objects = NULL;
gs_unref_object GFile *part_path = NULL;
gs_unref_object GInputStream *raw_in = NULL;
gs_unref_object GInputStream *in = NULL;
header = g_variant_get_child_value (headers, i);
g_variant_get (header, "(@aytt@ay)", &csum_v, &size, &usize, &objects);
if (!_ostree_repo_static_delta_part_have_all_objects (self, objects, &have_all,
cancellable, error))
goto out;
/* If we already have these objects, don't bother executing the
* static delta.
*/
if (have_all)
continue;
csum = ostree_checksum_bytes_peek_validate (csum_v, error);
if (!csum)
goto out;
part_path = ot_gfile_resolve_path_printf (dir, "%u", i);
in = (GInputStream*)g_file_read (part_path, cancellable, error);
if (!in)
goto out;
if (!skip_validation)
{
gs_free char *expected_checksum = ostree_checksum_from_bytes (csum);
if (!_ostree_static_delta_part_validate (self, part_path, i,
expected_checksum,
cancellable, error))
goto out;
}
{
GMappedFile *mfile = gs_file_map_noatime (part_path, cancellable, error);
gs_unref_bytes GBytes *bytes = NULL;
if (!mfile)
goto out;
bytes = g_mapped_file_get_bytes (mfile);
g_mapped_file_unref (mfile);
if (!_ostree_static_delta_part_execute (self, objects, bytes,
cancellable, error))
{
g_prefix_error (error, "executing delta part %i: ", i);
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
