124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/* ****************************************************************************
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* link/seven_mcs/get.c -- get a file from a protocol seven main memory.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libcasio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "seven_mcs.h"
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struct thecookie {
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int _called;
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int _err;
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casio_mcshead_t *_head;
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casio_mcsfile_t **_mcsfile;
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casio_link_progress_t *_disp;
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void *_disp_cookie;
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};
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/**
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* get_file:
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* Get the main memory file.
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*
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* @arg cookie the cookie (uncasted).
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* @arg handle the link handle.
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* @return the error code (0 if ok).
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*/
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CASIO_LOCAL int get_file(struct thecookie *cookie, casio_link_t *handle)
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{
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casio_stream_t *data_stream = NULL;
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casio_mcshead_t *head = cookie->_head;
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/* Check if the callback is already called. */
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if (cookie->_called)
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return (casio_error_unknown);
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cookie->_called = 1;
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/* Correct the head. */
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head->casio_mcshead_size = response.casio_seven_packet_filesize;
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/* Make the data stream. */
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cookie->_err = casio_seven_open_data_stream(&data_stream, handle, 0,
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cookie->_disp, cookie->_disp_cookie);
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if (cookie->_err) return (casio_error_unknown);
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/* Decode the MCS file. */
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cookie->_err = casio_decode_mcsfile(cookie->_mcsfile, head, data_stream);
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casio_close(data_stream);
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if (cookie->_err) return (casio_error_unknown);
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/* Send the final ack and return. */
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return (casio_seven_send_ack(handle, 1));
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}
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/**
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* casio_sevenmcs_get:
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* Get a file from a Protocol 7.00 main memory interface.
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*
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* @arg cookie the interface cookie.
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* @arg mcsfile the MCS file to get.
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* @arg mcshead the MCS head.
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* @return the error code (0 if ok).
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*/
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int CASIO_EXPORT casio_sevenmcs_get(sevenmcs_t *cookie,
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casio_mcsfile_t **mcsfile, casio_mcshead_t *mcshead)
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{
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int err; casio_mcshead_t head;
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casio_link_t *handle = cookie->sevenmcs_link;
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struct thecookie ccookie;
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/* Correct the head. */
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msg((ll_info, "Correcting the head."));
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memcpy(&head, mcshead, sizeof(head));
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if (casio_correct_mcshead(&head, casio_mcsfor_mcs))
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return (casio_error_notfound);
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/* Send the command. */
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msg((ll_info, "Sending the file request."));
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err = casio_seven_send_cmd_data(handle,
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casio_seven_cmdmcs_reqfile, 0, head.casio_mcshead_rawtype, 0,
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head.casio_mcshead_dirname, head.casio_mcshead_name,
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head.casio_mcshead_group, NULL, NULL, NULL);
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if (err) return (err);
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/* Check the answer. */
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if (response.casio_seven_packet_type == casio_seven_type_nak
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&& response.casio_seven_packet_code == casio_seven_err_other)
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return (casio_error_notfound);
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else if (response.casio_seven_packet_type != casio_seven_type_ack)
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return (casio_error_unknown);
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/* Prepare the cookie. */
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ccookie._called = 0;
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ccookie._err = 0;
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ccookie._mcsfile = mcsfile;
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ccookie._head = &head;
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ccookie._disp = NULL;
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ccookie._disp_cookie = NULL;
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msg((ll_info, "Preparing the callbacks and running the server."));
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memset(handle->casio_link_seven_callbacks, 0,
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256 * sizeof(casio_seven_server_func_t*));
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handle->casio_link_seven_callbacks[casio_seven_cmdmcs_sendfile] =
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(casio_seven_server_func_t*)&get_file;
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err = casio_seven_serve(handle, handle->casio_link_seven_callbacks,
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&ccookie);
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if (err) return (err);
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/* Check if the function was called. */
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return (ccookie._called ? ccookie._err : casio_error_unknown);
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}
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