keyboxd: Restructure client access code.
* kbx/kbx-client-util.c: New. * kbx/kbx-client-util.h: New. * kbx/Makefile.am (client_sources): New. * g10/keydb.c (parse_keyblock_image): Rename to keydb_parse_keyblock and make global. * g10/call-keyboxd.c: Include kbx-client-util.h. (struct keyboxd_local_s): Remove struct datastream. Add field kcd. Remove per_session_init_done. (lock_datastream, unlock_datastream): Remove. (prepare_data_pipe, datastream_thread): Remove. (keydb_get_keyblock_do_parse): Remove. (gpg_keyboxd_deinit_session_data): Release the KCD object. (open_context): Use of kbx_client_data_new. (keydb_get_keyblock): Simplify. (keydb_search): Use kbx_client_data_cmd and _wait.
The data specific part of the code has been moved from gpg to a new
module in kbx/ so that it can also be used by gpgsm. The OpenPGP
parsing while reading the data has been replaced by storing the data
in memory and parse it later. That makes a nice interface and
abstracts the fd-passing/D-lines handling away.
- Signed-off-by: Werner Koch <firstname.lastname@example.org>