+ /* the versions of notmuch that can support session key decryption */
+#if HAVE_GMIME_SESSION_KEYS
+ if (message) {
+ notmuch_message_properties_t *list = NULL;
+
+ for (list = notmuch_message_get_properties (message, "session-key", TRUE);
+ notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) {
+ if (err && *err) {
+ g_error_free (*err);
+ *err = NULL;
+ }
+#if (GMIME_MAJOR_VERSION < 3)
+ ret = g_mime_multipart_encrypted_decrypt_session (part,
+ crypto_ctx,
+ notmuch_message_properties_value (list),
+ decrypt_result, err);
+#else
+ ret = g_mime_multipart_encrypted_decrypt (part,
+ GMIME_DECRYPT_NONE,
+ notmuch_message_properties_value (list),
+ decrypt_result, err);
+#endif
+ if (ret)
+ break;
+ }
+ if (list)
+ notmuch_message_properties_destroy (list);
+ if (ret)
+ return ret;
+ }
+#endif
+
+ if (err && *err) {
+ g_error_free (*err);
+ *err = NULL;
+ }