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annotate libcommon/alpha_fromfile.c @ 18:2ef261371347

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alpha tag from file parsing functions factored out of pb-update
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 Feb 2021 03:21:39 +0000
parents simtool/pbupd_file.c@d4f8c511affe
children 90e7020df08a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2ef261371347 alpha tag from file parsing functions factored out of pb-update
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2 * This module implements functions for parsing alpha tag strings
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3 * from input data files, to be used by commands like pb-update
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4 * and smsp-restore.
1
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5 */
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6
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7 #include <sys/types.h>
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8 #include <ctype.h>
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9 #include <stdio.h>
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10
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8a34f5b7c812 gsm7_encode_table[] factored out into libcommon
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11 extern u_char gsm7_encode_table[256];
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12
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13 char *
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14 alpha_from_file_qstring(cp, record, maxlen, filename_for_errs, lineno_for_errs)
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15 char *cp, *filename_for_errs;
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16 u_char *record;
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17 unsigned maxlen;
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18 {
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19 unsigned acclen, nadd;
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20 int c;
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21
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22 for (acclen = 0; ; ) {
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23 if (*cp == '\0') {
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24 unterm_qstring: fprintf(stderr,
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25 "%s line %d: unterminated quoted string\n",
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26 filename_for_errs, lineno_for_errs);
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27 return(0);
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28 }
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29 if (*cp == '"')
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30 break;
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31 c = *cp++;
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32 if (c == '\\') {
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33 if (*cp == '\0')
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34 goto unterm_qstring;
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35 c = *cp++;
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36 switch (c) {
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37 case 'n':
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38 c = '\n';
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39 break;
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40 case 'r':
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41 c = '\r';
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42 break;
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43 case '"':
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44 case '\\':
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45 break;
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46 default:
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47 fprintf(stderr,
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48 "%s line %d: non-understood backslash escape\n",
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49 filename_for_errs, lineno_for_errs);
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50 return(0);
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51 }
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52 }
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53 c = gsm7_encode_table[c];
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54 if (c == 0xFF) {
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55 fprintf(stderr,
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56 "%s line %d: character in quoted string cannot be encoded in GSM7\n",
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57 filename_for_errs, lineno_for_errs);
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58 return(0);
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59 }
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60 if (c & 0x80)
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61 nadd = 2;
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62 else
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63 nadd = 1;
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64 if (acclen + nadd > maxlen) {
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65 fprintf(stderr,
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66 "%s line %d: alpha tag string is longer than SIM limit\n",
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67 filename_for_errs, lineno_for_errs);
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68 return(0);
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69 }
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70 if (c & 0x80)
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71 record[acclen++] = 0x1B;
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72 record[acclen++] = c & 0x7F;
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73 }
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74 return(cp + 1);
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75 }
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76
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77 char *
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78 alpha_from_file_hex(cp, record, maxlen, filename_for_errs, lineno_for_errs)
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79 char *cp, *filename_for_errs;
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80 u_char *record;
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81 unsigned maxlen;
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82 {
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83 unsigned acclen;
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84
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85 for (acclen = 0; ; ) {
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86 if (!isxdigit(cp[0]) || !isxdigit(cp[1]))
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87 break;
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88 if (acclen >= maxlen) {
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89 fprintf(stderr,
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90 "%s line %d: alpha tag string is longer than SIM limit\n",
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91 filename_for_errs, lineno_for_errs);
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92 return(0);
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93 }
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94 record[acclen++] = (decode_hex_digit(cp[0]) << 4) |
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95 decode_hex_digit(cp[1]);
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96 cp += 2;
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97 }
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98 return(cp);
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99 }