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annotate libcommon/dumpdirfunc.c @ 129:94d87d05f6c5

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libcommon: initial support for file search
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 20 Feb 2021 21:00:24 +0000
parents dcfec53643c5
children
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6
2c72709e0891 EF_DIR dump meaty function factored out into libcommon
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1 /*
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2 * This module implements the common function for dumping EF_DIR.
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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 "simresp.h"
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8
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9 static void
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10 dump_aid(tlv, outf)
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11 u_char *tlv;
106
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12 FILE *outf;
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13 {
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14 unsigned reclen, n;
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15
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16 reclen = tlv[1];
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17 fputs(" AID:", outf);
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18 for (n = 0; n < reclen; n++)
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19 fprintf(outf, " %02X", tlv[n+2]);
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20 putc('\n', outf);
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21 }
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22
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23 static void
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24 dump_label(tlv, outf)
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25 u_char *tlv;
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26 FILE *outf;
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27 {
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28 int rc;
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29 unsigned textlen;
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30
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31 fputs(" Label: ", outf);
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32 rc = validate_alpha_field(tlv + 2, tlv[1], &textlen);
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33 if (rc < 0) {
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34 fputs("malformed\n", outf);
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35 return;
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36 }
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37 print_alpha_field(tlv + 2, textlen, outf);
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38 putc('\n', outf);
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39 }
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40
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41 static void
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42 dump_unknown_tlv(tlv, outf)
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43 u_char *tlv;
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44 FILE *outf;
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45 {
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46 unsigned reclen, n;
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47
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48 reclen = tlv[1] + 2;
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49 fputs(" TLV:", outf);
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50 for (n = 0; n < reclen; n++)
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51 fprintf(outf, " %02X", tlv[n]);
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52 putc('\n', outf);
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53 }
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54
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55 void
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56 dump_efdir_record(outf)
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57 FILE *outf;
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58 {
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59 unsigned totlen, reclen;
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60 u_char *dp, *endp;
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61
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62 if (sim_resp_data[0] != 0x61) {
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63 fprintf(outf, " bad: first byte != 0x61\n");
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64 return;
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65 }
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66 totlen = sim_resp_data[1];
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67 if (totlen < 3 || totlen > 0x7F) {
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68 fprintf(outf, " bad: global length byte 0x%02X is invalid\n",
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69 totlen);
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70 return;
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71 }
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72 if (totlen + 2 > sim_resp_data_len) {
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73 fprintf(outf,
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74 " bad: TLV global length exceeds EF record length\n");
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75 return;
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76 }
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77 dp = sim_resp_data + 2;
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78 endp = sim_resp_data + 2 + totlen;
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79 while (dp < endp) {
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80 if (endp - dp < 2) {
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81 trunc_error: fprintf(outf, " bad: truncated TLV record\n");
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82 return;
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83 }
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84 if ((dp[0] & 0x1F) == 0x1F) {
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85 fprintf(outf, " bad: extended tag not supported\n");
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86 return;
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87 }
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88 if (dp[1] & 0x80) {
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89 fprintf(outf, " bad: extended length not supported\n");
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90 return;
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91 }
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92 reclen = dp[1] + 2;
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93 if (endp - dp < reclen)
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94 goto trunc_error;
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95 switch (dp[0]) {
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96 case 0x4F:
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97 dump_aid(dp, outf);
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98 break;
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99 case 0x50:
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100 dump_label(dp, outf);
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101 break;
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102 default:
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103 dump_unknown_tlv(dp, outf);
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104 }
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105 dp += reclen;
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106 }
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107 }