108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/* *****************************************************************************
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* protocol/seven/init.c -- initialize a P7 handle.
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* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libp7.
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* libp7 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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* libp7 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 libp7; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#include <libp7/internals.h>
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#define checkflags (p7_intflag_active | p7_intflag_check)
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#define endflags (p7_intflag_active | p7_intflag_term)
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/**
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* p7_seven_start:
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* Start the communication.
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*
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* @arg handle the handle.
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* @return the error, if any.
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*/
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int p7_seven_start(p7_handle_t *handle)
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{
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if ((handle->_flags & checkflags) != checkflags)
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return (0);
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/* start */
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int err = 0;
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log_info("so we're active? let's do what active people do then!");
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/* send initial check */
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if (handle->_flags & p7_intflag_check) {
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log_info("sending initial check packet");
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if ((err = p7_seven_send_ini_check(handle))) {
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log_fatal("couldn't send check/didn't receive answer");
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return (err);
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} else if (response.type != p7_seven_type_ack) {
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log_fatal("received packet wasn't ack, ask your dentist");
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return (p7_error_unknown);
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}
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#if LOGLEVEL <= ll_info
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} else {
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log_info("skipping initial check, we suppose already initialized");
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#endif
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}
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/* discover environment */
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log_info("checkin' up da environment");
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if ((err = p7_seven_send_cmdsys_getinfo(handle))) {
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log_fatal("couldn't send env query/receive answer");
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return (err);
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} else if (response.type != p7_seven_type_ack || !response.extended) {
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log_fatal("response to env query wasn't an extended ack packet");
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return (p7_error_unknown);
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}
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/* save server */
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handle->_server = response.info;
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/* get environment based on sent hardware id */
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handle->_env = p7_get_env(handle->_server.hwid);
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log_info("environment is '%s'", handle->_env->name);
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/* no error */
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return (0);
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}
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/**
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* p7_seven_end:
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* End the communication.
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*
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* @arg handle the handle.
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* @return the error code (0 if none).
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*/
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int p7_seven_end(p7_handle_t *handle)
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{
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if ((handle->_flags & endflags) != endflags
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|| ~handle->_flags & p7_intflag_terminated)
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return (0);
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/* send the termination packet */
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log_info("we were active, send sending terminate packet");
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int err = p7_seven_send_term(handle);
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if (err) {
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log_warn("couldn't terminate, already disconnected?");
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return (err);
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}
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/* check ack */
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if (response.type != p7_seven_type_ack) {
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log_warn("answer to terminate packet wasn't ack!");
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return (p7_error_unknown);
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}
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/* no error! */
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return (0);
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}
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