69 lines
2.2 KiB
Plaintext
69 lines
2.2 KiB
Plaintext
/* *****************************************************************************
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* legacy/recv.c -- receive a legacy packet.
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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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/* ************************************************************************** */
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/* Receive the packet */
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/* ************************************************************************** */
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/**
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* p7_legacy_recv:
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* Receive a [legacy] packet.
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*
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* This is the main receiving function for legacy protocol(s).
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* It checks the first byte, and if it is a header, it reads the header/part
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* using libg1m.
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*
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* @arg handle the libp7 handle
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* @return the error (0 if ok)
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*/
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static int p7_legacy_recv(p7_handle_t *handle)
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{
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/* get the first character */
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log_info("receiving packet...");
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uint8_t byte; if ((err = p7_read(&handle->_stream, &byte, 1)))
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return (err);
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if (byte != ':') switch (byte) {
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/* initial packets */
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case 0x15: /* is interactive initial packet */
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case 0x16: resp.type = p7_pt_ini; return (0);
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/* initial packet response */
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case 0x13: resp.type = p7_pt_ini_resp; return (0);
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/* ack */
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case 0x06: resp.type = p7_pt_ack; return (0);
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/* unknown data type */
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case 0x00: case 0x24: return (0);
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/* checksum error */
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case 0x2B: return (0);
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/* abort XXX */
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case 0x15: return (0);
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/* we don't know this */
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default: return (p7_error_unknown);
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}
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/* unknown packet! */
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return (p7_error_unknown);
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}
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