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annotate uptools/libcoding/sms_submit.c @ 783:c136a1a2474b

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simagent: initial implementation of APDU exchange
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 13 Mar 2021 22:06:08 +0000
parents d1fa771abeb8
children
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68c8cf672ecd uptools/libcoding: implemented generation of SMS-SUBMIT PDUs
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1 /*
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2 * This library module implements the function for constructing outgoing
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3 * SMS-SUBMIT PDUs.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <strings.h>
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8
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d1fa771abeb8 uptools: make_sms_submit_pdu() in libcoding now takes PID and DCS arguments
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9 make_sms_submit_pdu(da, pid, dcs, textsrc, textlen, udh, udhl, outbuf)
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10 u_char *da, *textsrc, *udh, *outbuf;
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11 unsigned textlen, udhl;
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12 {
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13 u_char *outp = outbuf;
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14 unsigned addr_field_len;
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15 unsigned udh_octets, udh_chars;
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16 u_char ud7[160];
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17 unsigned udl, udl_octets;
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19 if (udh)
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20 *outp++ = 0x41;
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21 else
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22 *outp++ = 0x01;
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23 *outp++ = 0;
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24 addr_field_len = ((da[0] + 1) >> 1) + 2;
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25 bcopy(da, outp, addr_field_len);
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26 outp += addr_field_len;
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27 *outp++ = pid;
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28 *outp++ = dcs;
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29 if (udh) {
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30 udh_octets = udhl + 1;
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31 udh_chars = (udh_octets * 8 + 6) / 7;
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32 } else {
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33 udh_octets = 0;
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34 udh_chars = 0;
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35 }
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36 udl = udh_chars + textlen;
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37 *outp++ = udl;
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38 udl_octets = (udl * 7 + 7) / 8;
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39 bzero(ud7, 160);
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40 bcopy(textsrc, ud7 + udh_chars, textlen);
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41 gsm7_pack(ud7, outp, udl_octets);
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42 if (udh) {
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43 *outp = udhl;
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44 bcopy(udh, outp + 1, udhl);
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45 }
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46 outp += udl_octets;
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47 return (outp - outbuf);
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48 }