mirror of https://gerrit.osmocom.org/libosmocore
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
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* (C) 2014 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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. See the
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* GNU General Public License for more details.
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*
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <osmocom/core/byteswap.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/gsm/protocol/gsm_03_41.h>
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/*! \addtogroup sms
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* @{
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* \file gsm0341.c
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*/
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/*! Encode a 3GPP TS 03.41 SMS-CB message
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* \param[in] ctx talloc allocation context
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* \param[in] geo_scope Geographic Scope
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* \param[in] msg_code Message Code
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* \param[in] update Is this an update?
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* \param[in] msg_id Message ID
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* \param[in] dcs Data Coding Scheme
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* \param[in] page_total Total number of pages
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* \param[in] page_cur Current Page (up to \a page_total)
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* \param[in] data Message data (copied 1:1)
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* \param[in] len Length of \a data in bytes (up to 88)
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* \returns callee-allocated TS 03.41 message with encoded data */
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struct gsm341_ms_message *
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gsm0341_build_msg(void *ctx, uint8_t geo_scope, uint8_t msg_code,
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uint8_t update, uint16_t msg_id, uint8_t dcs,
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uint8_t page_total, uint8_t page_cur,
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uint8_t *data, uint8_t len)
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{
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struct gsm341_ms_message *cbmsg;
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msg_id = osmo_htons(msg_id);
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if (len > 88)
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return NULL;
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cbmsg = talloc_zero_size(ctx, sizeof(*cbmsg)+len);
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if (!cbmsg)
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return NULL;
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cbmsg->serial.code_hi = (msg_code >> 4) & 0xF;
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cbmsg->serial.gs = geo_scope;
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cbmsg->serial.update = update;
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cbmsg->serial.code_lo = msg_code & 0xF;
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cbmsg->msg_id = msg_id;
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cbmsg->dcs.group = dcs >> 4;
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cbmsg->dcs.language = dcs & 0xF;
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cbmsg->page.total = page_total;
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cbmsg->page.current = page_cur;
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memcpy(cbmsg->data, data, len);
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return cbmsg;
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}
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/*! @} */
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