FreeCalypso > hg > freecalypso-hwlab

annotate simtool/hexread.c @ 114:34c090f35515

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fc-simtool: fix-sysmo-msisdn command implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Jan 2021 01:46:40 +0000
parents 4aaf722ab933
children 54e33e9238b6
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454ff8bd0b83 fc-simtool: update-bin command implemented
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1 /*
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2 * This module contains the function for reading hex files,
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3 * to be used in the implementation of manual write commands.
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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 <ctype.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12
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13 decode_hex_digit(c)
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14 {
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15 if (c >= '0' && c <= '9')
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16 return(c - '0');
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17 if (c >= 'A' && c <= 'F')
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18 return(c - 'A' + 10);
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19 if (c >= 'a' && c <= 'f')
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20 return(c - 'a' + 10);
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21 return(-1);
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22 }
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23
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24 read_hex_data_file(filename, databuf)
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25 char *filename;
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26 u_char *databuf;
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27 {
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28 FILE *inf;
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29 unsigned count;
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30 int c, c2;
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31
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32 inf = fopen(filename, "r");
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33 if (!inf) {
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34 perror(filename);
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35 return(-1);
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36 }
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37 for (count = 0; ; count++) {
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38 do
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39 c = getc(inf);
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40 while (isspace(c));
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41 if (c < 0)
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42 break;
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43 if (!isxdigit(c)) {
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44 inv_input: fprintf(stderr, "%s: invalid hex file input\n",
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45 filename);
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46 fclose(inf);
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47 return(-1);
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48 }
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49 c2 = getc(inf);
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50 if (!isxdigit(c2))
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51 goto inv_input;
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52 if (count >= 255) {
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53 fprintf(stderr, "%s: hex input data is too long\n",
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54 filename);
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55 fclose(inf);
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56 return(-1);
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57 }
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58 databuf[count] = (decode_hex_digit(c) << 4) |
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59 decode_hex_digit(c2);
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60 }
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61 fclose(inf);
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62 if (!count) {
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63 fprintf(stderr, "%s: no hex data input found\n", filename);
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64 return(-1);
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65 }
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66 return(count);
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67 }
109
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68
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69 decode_hex_data_from_string(arg, databuf)
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70 char *arg;
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71 u_char *databuf;
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72 {
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73 unsigned count;
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74
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75 for (count = 0; ; count++) {
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76 while (isspace(*arg))
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77 arg++;
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78 if (!*arg)
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79 break;
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80 if (!isxdigit(arg[0]) || !isxdigit(arg[1])) {
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81 fprintf(stderr, "error: invalid hex string input\n");
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82 return(-1);
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83 }
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84 if (count >= 255) {
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85 fprintf(stderr, "error: hex input data is too long\n");
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86 return(-1);
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87 }
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88 databuf[count] = (decode_hex_digit(arg[0]) << 4) |
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89 decode_hex_digit(arg[1]);
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90 arg += 2;
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91 }
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92 if (!count) {
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93 fprintf(stderr, "error: empty hex string argument\n");
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94 return(-1);
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95 }
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96 return(count);
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97 }