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/*
* (C) 2014 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <osmocom/core/byteswap.h>
#include <osmocom/core/talloc.h>
#include <osmocom/gsm/protocol/gsm_03_41.h>
/*! \addtogroup sms
* @{
* \file gsm0341.c
*/
/*! Encode a 3GPP TS 03.41 SMS-CB message
* \param[in] ctx talloc allocation context
* \param[in] geo_scope Geographic Scope
* \param[in] msg_code Message Code
* \param[in] update Is this an update?
* \param[in] msg_id Message ID
* \param[in] dcs Data Coding Scheme
* \param[in] page_total Total number of pages
* \param[in] page_cur Current Page (up to \a page_total)
* \param[in] data Message data (copied 1:1)
* \param[in] len Length of \a data in bytes (up to 88)
* \returns callee-allocated TS 03.41 message with encoded data */
struct gsm341_ms_message *
gsm0341_build_msg(void *ctx, uint8_t geo_scope, uint8_t msg_code,
uint8_t update, uint16_t msg_id, uint8_t dcs,
uint8_t page_total, uint8_t page_cur,
uint8_t *data, uint8_t len)
{
struct gsm341_ms_message *cbmsg;
msg_id = osmo_htons(msg_id);
if (len > 88)
return NULL;
cbmsg = talloc_zero_size(ctx, sizeof(*cbmsg)+len);
if (!cbmsg)
return NULL;
cbmsg->serial.code_hi = (msg_code >> 4) & 0xF;
cbmsg->serial.gs = geo_scope;
cbmsg->serial.update = update;
cbmsg->serial.code_lo = msg_code & 0xF;
cbmsg->msg_id = msg_id;
cbmsg->dcs.group = dcs >> 4;
cbmsg->dcs.language = dcs & 0xF;
cbmsg->page.total = page_total;
cbmsg->page.current = page_cur;
memcpy(cbmsg->data, data, len);
return cbmsg;
}
/*! @} */
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