FreeCalypso > hg > osmo-playpen

annotate smsc-sendmt/smsc_addr.c @ 22:7bfe3e21eaae default tip

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top Makefile: add ctrl-client
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 17 Dec 2023 08:53:35 +0000
parents 7543aa173634
children
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1 /*
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2 * This module handles the parsing and GSUP encoding of our SMSC address,
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3 * which we need to send to the MSC and ultimately to the MS as SM-RP-OA.
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4 */
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5
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6 #include <ctype.h>
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7 #include <string.h>
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <stdlib.h>
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12 #include <osmocom/gsm/gsm48_ie.h>
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13 #include <osmocom/gsm/gsup.h>
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15 static char smsc_addr_num[21]; /* maximum of 20 digits per GSM 04.11 */
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16 static uint8_t smsc_addr_ton_npi;
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17 static uint8_t smsc_addr_bcd[12];
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19 void parse_smsc_addr_arg(const char *arg)
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20 {
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21 const char *cp;
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22 char *dp, *endp;
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23 unsigned ndig;
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25 cp = arg;
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26 dp = smsc_addr_num;
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27 ndig = 0;
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28 while (isdigit(*cp)) {
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29 if (ndig >= 20) {
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30 fprintf(stderr,
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31 "error: SMSC address argument exceeds GSM 04.11 limit of 20 digits\n");
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32 exit(1);
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33 }
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34 *dp++ = *cp++;
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35 ndig++;
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36 }
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37 if (!ndig) {
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38 invalid: fprintf(stderr,
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39 "error: SMSC address argument \"%s\" is invalid\n",
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40 arg);
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41 exit(1);
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42 }
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43 if (!*cp) {
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44 /* default to TON=1, NPI=1, i.e., a pretend Global Title */
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45 smsc_addr_ton_npi = 0x91;
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46 return;
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47 }
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48 if (*cp++ != ',')
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49 goto invalid;
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50 if (!*cp)
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51 goto invalid;
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52 smsc_addr_ton_npi = strtoul(cp, &endp, 0);
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53 if (*endp)
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54 goto invalid;
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55 }
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57 void encode_smsc_addr(struct osmo_gsup_message *gmsg)
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58 {
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59 gsm48_encode_bcd_number(smsc_addr_bcd, 11, 1, smsc_addr_num);
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60 smsc_addr_bcd[1] = smsc_addr_ton_npi;
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61 gmsg->sm_rp_oa = smsc_addr_bcd + 1;
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62 gmsg->sm_rp_oa_len = smsc_addr_bcd[0];
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63 }