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annotate enc-text/ucs2.c @ 28:6e925aa54727

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libcoding: more sensible naming of GSM time encoding and decoding modules
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 13 Jun 2024 02:32:11 +0000
parents e56bb9f09ff1
children
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1 /*
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2 * In this module we implement SMS encoding in UCS-2.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <unistd.h>
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11 #include "defs.h"
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12
23
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13 extern int allow_escape;
2
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14 extern int concat_enable, concat_refno_set;
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15 extern char msgtext[MAX_MSG_CHARS*2+2];
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16 extern u_char concat_refno;
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17
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18 ucs2_mode_main()
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19 {
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20 u_short msgtext_uni[MAX_MSG_UNI];
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21 unsigned msgtext_unilen;
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22 int rc;
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23 unsigned nparts, n;
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24 u_char udh[6], ucs2_be[140];
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25 unsigned pos, remain, chunk;
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26
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27 rc = utf8_to_ucs2(msgtext, msgtext_uni, MAX_MSG_UNI, &msgtext_unilen,
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28 allow_escape);
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29 if (rc == -1) {
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30 fprintf(stderr, "error: invalid UTF-8 message\n");
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31 exit(1);
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32 }
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33 if (rc == -2) {
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34 fprintf(stderr, "error: message too long for max concat SMS\n");
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35 exit(1);
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36 }
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37 if (rc == -3) {
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38 fprintf(stderr,
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39 "error: message contains invalid backslash escape\n");
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40 exit(1);
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41 }
2
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42 if (msgtext_unilen <= 70) {
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43 fputs("dcs 8 octet\nmsg ", stdout);
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44 if (msgtext_unilen) {
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45 ucs2_out_bigend(msgtext_uni, ucs2_be, msgtext_unilen);
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46 emit_hex_out(ucs2_be, msgtext_unilen * 2, stdout);
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47 } else {
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48 putchar('"');
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49 putchar('"');
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50 }
2
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51 putchar('\n');
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52 exit(0);
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53 }
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54 if (!concat_enable) {
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55 fprintf(stderr, "error: message exceeds 70 UCS-2 chars\n");
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56 exit(1);
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57 }
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58 if (!concat_refno_set)
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59 concat_refno = get_concsms_refno_from_host_fs();
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60 puts("dcs 8 octet");
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61 nparts = (msgtext_unilen + 66) / 67;
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62 udh[0] = 5;
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63 udh[1] = 0x00;
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64 udh[2] = 0x03;
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65 udh[3] = concat_refno;
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66 udh[4] = nparts;
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67 pos = 0;
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68 remain = msgtext_unilen;
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69 for (n = 1; n <= nparts; n++) {
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70 udh[5] = n;
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71 chunk = 67;
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72 if (chunk > remain)
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73 chunk = remain;
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74 fputs("msg-udh ", stdout);
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75 emit_hex_out(udh, 6, stdout);
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76 ucs2_out_bigend(msgtext_uni + pos, ucs2_be, chunk);
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77 emit_hex_out(ucs2_be, chunk * 2, stdout);
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78 putchar('\n');
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79 pos += chunk;
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80 remain -= chunk;
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81 }
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82 exit(0);
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83 }