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pull: check that the superblock checksum is the same as in the summary

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2015-04-28 18:45:11 +02:00
parent 222696996f
commit 8c3d4eb7b2
1 changed files with 24 additions and 1 deletions
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25
src/libostree/ostree-repo-pull.c
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@ -1376,6 +1376,29 @@ request_static_delta_superblock_sync (OtPullData *pull_data,
goto out;
}
{
gs_free gchar *delta = NULL;
gs_free guchar *ret_csum = NULL;
guchar *summary_csum;
g_autoptr (GInputStream) summary_is = NULL;
summary_is = g_memory_input_stream_new_from_data (g_bytes_get_data (delta_superblock_data, NULL),
g_bytes_get_size (delta_superblock_data),
NULL);
if (!ot_gio_checksum_stream (summary_is, &ret_csum, cancellable, error))
goto out;
delta = g_strconcat (from_revision ? from_revision : "", from_revision ? "-" : "", to_revision, NULL);
summary_csum = g_hash_table_lookup (pull_data->summary_deltas_checksums, delta);
if (summary_csum && memcmp (summary_csum, ret_csum, 32))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Invalid checksum for static delta %s", delta);
goto out;
}
}
ret_delta_superblock = g_variant_new_from_bytes ((GVariantType*)OSTREE_STATIC_DELTA_SUPERBLOCK_FORMAT,
delta_superblock_data, FALSE);
}
@ -1945,7 +1968,7 @@ ostree_repo_pull_with_options (OstreeRepo *self,
}
additional_metadata = g_variant_get_child_value (pull_data->summary, 1);
deltas = g_variant_lookup_value (additional_metadata, "static-deltas", G_VARIANT_TYPE ("a{sv}"));
deltas = g_variant_lookup_value (additional_metadata, "ostree.static-deltas", G_VARIANT_TYPE ("a{sv}"));
n = deltas ? g_variant_n_children (deltas) : 0;
for (i = 0; i < n; i++)
{