1 | /*
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2 | atr.c
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3 | ISO 7816 ICC's answer to reset abstract data type implementation
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4 |
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5 | This file is part of the Unix driver for Towitoko smartcard readers
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6 | Copyright (C) 2000 Carlos Prados <cprados@yahoo.com>
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7 |
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8 | This version is modified by doz21 to work in a special manner ;)
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9 |
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10 | This library is free software; you can redistribute it and/or
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11 | modify it under the terms of the GNU Lesser General Public
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12 | License as published by the Free Software Foundation; either
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13 | version 2 of the License, or (at your option) any later version.
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14 |
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15 | This library is distributed in the hope that it will be useful,
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 | Lesser General Public License for more details.
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19 |
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20 | You should have received a copy of the GNU Lesser General Public
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21 | License along with this library; if not, write to the Free Software
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22 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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23 | */
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24 |
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25 | #include "defines.h"
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26 | #include "atr.h"
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27 | #include <stdlib.h>
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28 | #include <string.h>
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29 |
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30 | /*
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31 | * Not exported variables definition
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32 | */
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33 |
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34 | static unsigned long atr_fs_table[16] = {0, 5000000L, 6000000L, 8000000L, 12000000L, 16000000L, 20000000L, 0, 0, 5000000L, 7500000L, 10000000L, 15000000L, 20000000L, 0, 0};
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35 |
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36 | static unsigned atr_num_ib_table[16] = {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
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37 |
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38 | /*
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39 | * Exported variables definition
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40 | */
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41 |
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42 | unsigned atr_f_table[16] = {0, 372, 558, 744, 1116, 1488, 1860, 0, 0, 512, 768, 1024, 1536, 2048, 0, 0};
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43 |
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44 | double atr_d_table[16] = {0, 1, 2, 4, 8, 16, 32, 0, 12, 20, 0.5, 0.25, 0.125, 0.0625, 0.03125, 0.015625};
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45 | //old table has 0 for RFU:
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46 | //double atr_d_table[16] = {0, 1, 2, 4, 8, 16, 0, 0, 0, 0, 0.5, 0.25, 125, 0.0625, 0.03125, 0.015625};
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47 |
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48 | unsigned atr_i_table[4] = {25, 50, 100, 0};
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49 |
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50 | /*
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51 | * Not exported functions declaration
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52 | */
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53 |
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54 | static bool ATR_GetNextByte (IO_Serial * io, unsigned timeout, BYTE * b, bool invert);
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55 |
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56 | /*
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57 | * Exported funcions definition
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58 | */
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59 |
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60 | ATR * ATR_New (void)
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61 | {
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62 | ATR *atr;
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63 |
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64 | /* Allocate memory */
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65 | atr = (ATR *) malloc (sizeof (ATR));
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66 |
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67 | return atr;
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68 | }
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69 |
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70 | int ATR_InitFromArray (ATR * atr, BYTE atr_buffer[ATR_MAX_SIZE], unsigned length)
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71 | {
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72 | BYTE TDi;
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73 | BYTE buffer[ATR_MAX_SIZE];
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74 | unsigned pointer = 0, pn = 0;
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75 |
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76 | /* Check size of buffer */
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77 | if (length < 2)
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78 | return (ATR_MALFORMED);
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79 |
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80 | /* Check if ATR is from a inverse convention card */
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81 | if (atr_buffer[0] == 0x03)
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82 | {
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83 | for (pointer = 0; pointer < length; pointer++)
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84 | buffer[pointer] = ~(INVERT_BYTE (atr_buffer[pointer]));
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85 | }
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86 | else
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87 | {
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88 | memcpy (buffer, atr_buffer, length);
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89 | }
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90 |
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91 | /* Store T0 and TS */
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92 | atr->TS = buffer[0];
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93 |
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94 | atr->T0 = TDi = buffer[1];
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95 | pointer = 1;
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96 |
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97 | /* Store number of historical bytes */
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98 | atr->hbn = TDi & 0x0F;
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99 |
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100 | /* TCK is not present by default */
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101 | (atr->TCK).present = FALSE;
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102 |
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103 | /* Extract interface bytes */
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104 | while (pointer < length)
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105 | {
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106 | /* Check buffer is long enought */
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107 | if (pointer + atr_num_ib_table[(0xF0 & TDi) >> 4] >= length)
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108 | {
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109 | return (ATR_MALFORMED);
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110 | }
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111 |
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112 | /* Check TAi is present */
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113 | if ((TDi | 0xEF) == 0xFF)
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114 | {
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115 | pointer++;
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116 | atr->ib[pn][ATR_INTERFACE_BYTE_TA].value = buffer[pointer];
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117 | atr->ib[pn][ATR_INTERFACE_BYTE_TA].present = TRUE;
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118 | }
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119 | else
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120 | {
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121 | atr->ib[pn][ATR_INTERFACE_BYTE_TA].present = FALSE;
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122 | }
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123 |
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124 | /* Check TBi is present */
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125 | if ((TDi | 0xDF) == 0xFF)
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126 | {
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127 | pointer++;
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128 | atr->ib[pn][ATR_INTERFACE_BYTE_TB].value = buffer[pointer];
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129 | atr->ib[pn][ATR_INTERFACE_BYTE_TB].present = TRUE;
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130 | }
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131 | else
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132 | {
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133 | atr->ib[pn][ATR_INTERFACE_BYTE_TB].present = FALSE;
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134 | }
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135 |
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136 | /* Check TCi is present */
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137 | if ((TDi | 0xBF) == 0xFF)
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138 | {
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139 | pointer++;
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140 | atr->ib[pn][ATR_INTERFACE_BYTE_TC].value = buffer[pointer];
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141 | atr->ib[pn][ATR_INTERFACE_BYTE_TC].present = TRUE;
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142 | }
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143 | else
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144 | {
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145 | atr->ib[pn][ATR_INTERFACE_BYTE_TC].present = FALSE;
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146 | }
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147 |
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148 | /* Read TDi if present */
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149 | if ((TDi | 0x7F) == 0xFF)
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150 | {
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151 | pointer++;
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152 | TDi = atr->ib[pn][ATR_INTERFACE_BYTE_TD].value = buffer[pointer];
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153 | atr->ib[pn][ATR_INTERFACE_BYTE_TD].present = TRUE;
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154 | (atr->TCK).present = ((TDi & 0x0F) != ATR_PROTOCOL_TYPE_T0);
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155 | if ((TDi & 0xF0) == 0) //last TDi byte
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156 | break;
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157 | if (pn >= ATR_MAX_PROTOCOLS)
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158 | return (ATR_MALFORMED);
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159 | pn++;
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160 | }
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161 | else
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162 | {
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163 | atr->ib[pn][ATR_INTERFACE_BYTE_TD].present = FALSE;
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164 | break;
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165 | }
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166 | }
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167 |
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168 | /* Store number of protocols */
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169 | atr->pn = pn + 1;
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170 |
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171 | /* Store historical bytes */
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172 | if (pointer + atr->hbn >= length) {
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173 | cs_log("ATR is malformed, it reports %i historical bytes but there are only %i",atr->hbn, length-pointer-2);
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174 | if (length-pointer-2 >=0)
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175 | atr->hbn = length-pointer-2;
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176 | else {
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177 | atr->hbn = 0;
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178 | atr->length = pointer + 1;
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179 | return (ATR_MALFORMED);
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180 | }
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181 |
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182 | }
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183 |
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184 | memcpy (atr->hb, buffer + pointer + 1, atr->hbn);
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185 | pointer += (atr->hbn);
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186 |
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187 | /* Store TCK */
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188 | if ((atr->TCK).present)
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189 | {
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190 | if (pointer + 1 >= length)
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191 | return (ATR_MALFORMED);
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192 |
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193 | pointer++;
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194 |
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195 | (atr->TCK).value = buffer[pointer];
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196 | }
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197 |
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198 | atr->length = pointer + 1;
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199 | return (ATR_OK);
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200 | }
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201 |
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202 | int ATR_InitFromStream (ATR * atr, IO_Serial * io, unsigned timeout)
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203 | {
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204 | BYTE TDi;
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205 | unsigned pointer = 0, pn = 0, i;
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206 | bool invert;
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207 |
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208 | invert = FALSE;
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209 |
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210 | /* Store T0 and TS */
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211 | if (!ATR_GetNextByte (io, timeout, &(atr->TS), invert))
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212 | return ATR_IO_ERROR;
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213 |
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214 | if (atr->TS == 0x03)
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215 | {
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216 | atr->TS = 0x3F;
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217 | invert = TRUE;
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218 | }
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219 |
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220 | if ((atr->TS != 0x3B) && (atr->TS != 0x3F))
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221 | return ATR_MALFORMED;
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222 |
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223 | if (!ATR_GetNextByte (io, timeout, &(atr->T0), invert))
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224 | return ATR_MALFORMED;
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225 |
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226 | TDi = atr->T0;
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227 | pointer = 1;
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228 |
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229 | /* Store number of historical bytes */
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230 | atr->hbn = TDi & 0x0F;
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231 |
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232 | /* TCK is not present by default */
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233 | (atr->TCK).present = FALSE;
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234 |
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235 | /* Extract interface bytes */
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236 | while (TRUE)
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237 | {
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238 | /* Check TAi is present */
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239 | if ((TDi | 0xEF) == 0xFF)
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240 | {
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241 | pointer++;
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242 | if (!ATR_GetNextByte(io, timeout, &(atr->ib[pn][ATR_INTERFACE_BYTE_TA].value),invert))
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243 | return ATR_MALFORMED;
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244 | atr->ib[pn][ATR_INTERFACE_BYTE_TA].present = TRUE;
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245 | }
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246 | else
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247 | {
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248 | atr->ib[pn][ATR_INTERFACE_BYTE_TA].present = FALSE;
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249 | }
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250 |
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251 | /* Check TBi is present */
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252 | if ((TDi | 0xDF) == 0xFF)
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253 | {
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254 | pointer++;
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255 | if (!ATR_GetNextByte(io, timeout, &(atr->ib[pn][ATR_INTERFACE_BYTE_TB].value),invert))
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256 | return ATR_MALFORMED;
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257 | atr->ib[pn][ATR_INTERFACE_BYTE_TB].present = TRUE;
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258 | }
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259 | else
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260 | {
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261 | atr->ib[pn][ATR_INTERFACE_BYTE_TB].present = FALSE;
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262 | }
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263 |
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264 | /* Check TCi is present */
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265 | if ((TDi | 0xBF) == 0xFF)
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266 | {
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267 | pointer++;
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268 | if (!ATR_GetNextByte(io, timeout, &(atr->ib[pn][ATR_INTERFACE_BYTE_TC].value), invert))
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269 | return ATR_MALFORMED;
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270 | atr->ib[pn][ATR_INTERFACE_BYTE_TC].present = TRUE;
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271 | }
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272 | else
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273 | {
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274 | atr->ib[pn][ATR_INTERFACE_BYTE_TC].present = FALSE;
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275 | }
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276 |
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277 | /* Read TDi if present */
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278 | if ((TDi | 0x7F) == 0xFF)
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279 | {
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280 | pointer++;
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281 | if (!ATR_GetNextByte(io, timeout, &(atr->ib[pn][ATR_INTERFACE_BYTE_TD].value), invert))
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282 | return ATR_MALFORMED;
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283 | TDi = atr->ib[pn][ATR_INTERFACE_BYTE_TD].value;
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284 | atr->ib[pn][ATR_INTERFACE_BYTE_TD].present = TRUE;
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285 | (atr->TCK).present = ((TDi & 0x0F) != ATR_PROTOCOL_TYPE_T0);
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286 | if ((TDi & 0xF0) == 0) //last TDi byte
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287 | break;
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288 | if (pn >= ATR_MAX_PROTOCOLS)
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289 | return (ATR_MALFORMED);
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290 | pn++;
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291 | }
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292 | else
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293 | {
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294 | atr->ib[pn][ATR_INTERFACE_BYTE_TD].present = FALSE;
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295 | break;
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296 | }
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297 | }
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298 |
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299 | /* Store number of protocols */
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300 | atr->pn = pn + 1;
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301 |
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302 | /* Store historical bytes */
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303 | for (i = 0; i < (atr->hbn); i++)
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304 | {
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305 | if (!ATR_GetNextByte (io, timeout, &(atr->hb[i]), invert))
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306 | return ATR_MALFORMED;
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307 | }
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308 |
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309 | pointer += (atr->hbn);
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310 |
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311 | /* Store TCK */
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312 | if ((atr->TCK).present)
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313 | {
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314 | pointer++;
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315 |
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316 | if (!ATR_GetNextByte (io, timeout, (&((atr->TCK).value)), invert))
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317 | return ATR_MALFORMED;
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318 | }
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319 |
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320 | atr->length = pointer + 1;
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321 | return (ATR_OK);
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322 |
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323 | }
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324 |
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325 | void ATR_Delete (ATR * atr)
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326 | {
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327 | free (atr);
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328 | }
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329 |
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330 | int ATR_GetConvention (ATR * atr, int *convention)
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331 | {
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332 | if (atr->TS == 0x3B)
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333 | (*convention) = ATR_CONVENTION_DIRECT;
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334 | else if (atr->TS == 0x3F)
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335 | (*convention) = ATR_CONVENTION_INVERSE;
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336 | else
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337 | return (ATR_MALFORMED);
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338 |
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339 | return (ATR_OK);
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340 | }
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341 |
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342 | int ATR_GetSize (ATR * atr, unsigned *size)
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343 | {
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344 | (*size) = atr->length;
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345 | return (ATR_OK);
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346 | }
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347 |
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348 | int ATR_GetNumberOfProtocols (ATR * atr, unsigned *number_protocols)
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349 | {
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350 | (*number_protocols) = atr->pn;
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351 | return (ATR_OK);
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352 | }
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353 |
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354 | int ATR_GetProtocolType (ATR * atr, unsigned number_protocol, BYTE *protocol_type)
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355 | {
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356 | if ((number_protocol > atr->pn) || number_protocol < 1)
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357 | return ATR_NOT_FOUND;
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358 |
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359 | if (atr->ib[number_protocol - 1][ATR_INTERFACE_BYTE_TD].present)
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360 | (*protocol_type) = (atr->ib[number_protocol - 1][ATR_INTERFACE_BYTE_TD].value & 0x0F);
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361 | else
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362 | (*protocol_type) = ATR_PROTOCOL_TYPE_T0;
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363 |
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364 | return (ATR_OK);
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365 | }
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366 |
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367 | int ATR_GetInterfaceByte (ATR * atr, unsigned number, int character, BYTE * value)
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368 | {
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369 | if (number > atr->pn || number < 1)
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370 | return (ATR_NOT_FOUND);
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371 |
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372 | if (atr->ib[number - 1][character].present && (character == ATR_INTERFACE_BYTE_TA || character == ATR_INTERFACE_BYTE_TB || character == ATR_INTERFACE_BYTE_TC || character == ATR_INTERFACE_BYTE_TD))
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373 | (*value) = atr->ib[number - 1][character].value;
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374 | else
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375 | return (ATR_NOT_FOUND);
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376 |
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377 | return (ATR_OK);
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378 | }
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379 |
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380 | int ATR_GetIntegerValue (ATR * atr, int name, BYTE * value)
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381 | {
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382 | int ret;
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383 |
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384 | if (name == ATR_INTEGER_VALUE_FI)
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385 | {
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386 | if (atr->ib[0][ATR_INTERFACE_BYTE_TA].present)
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387 | {
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388 | (*value) = (atr->ib[0][ATR_INTERFACE_BYTE_TA].value & 0xF0) >> 4;
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389 | ret = ATR_OK;
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390 | }
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391 | else
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392 | {
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393 | ret = ATR_NOT_FOUND;
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394 | }
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395 | }
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396 | else if (name == ATR_INTEGER_VALUE_DI)
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397 | {
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398 | if (atr->ib[0][ATR_INTERFACE_BYTE_TA].present)
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399 | {
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400 | (*value) = (atr->ib[0][ATR_INTERFACE_BYTE_TA].value & 0x0F);
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401 | ret = ATR_OK;
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402 | }
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403 | else
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404 | {
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405 | ret = ATR_NOT_FOUND;
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406 | }
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407 | }
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408 | else if (name == ATR_INTEGER_VALUE_II)
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409 | {
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410 | if (atr->ib[0][ATR_INTERFACE_BYTE_TB].present)
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411 | {
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412 | (*value) = (atr->ib[0][ATR_INTERFACE_BYTE_TB].value & 0x60) >> 5;
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413 | ret = ATR_OK;
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414 | }
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415 | else
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416 | {
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417 | ret = ATR_NOT_FOUND;
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418 | }
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419 | }
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420 | else if (name == ATR_INTEGER_VALUE_PI1)
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421 | {
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422 | if (atr->ib[0][ATR_INTERFACE_BYTE_TB].present)
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423 | {
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424 | (*value) = (atr->ib[0][ATR_INTERFACE_BYTE_TB].value & 0x1F);
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425 | ret = ATR_OK;
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426 | }
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427 | else
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428 | {
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429 | ret = ATR_NOT_FOUND;
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430 | }
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431 | }
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432 | else if (name == ATR_INTEGER_VALUE_PI2)
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433 | {
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434 | if (atr->ib[1][ATR_INTERFACE_BYTE_TB].present)
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435 | {
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436 | (*value) = atr->ib[1][ATR_INTERFACE_BYTE_TB].value;
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437 | ret = ATR_OK;
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438 | }
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439 | else
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440 | {
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441 | ret = ATR_NOT_FOUND;
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442 | }
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443 | }
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444 | else if (name == ATR_INTEGER_VALUE_N)
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445 | {
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446 | if (atr->ib[0][ATR_INTERFACE_BYTE_TC].present)
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447 | {
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448 | (*value) = atr->ib[0][ATR_INTERFACE_BYTE_TC].value;
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449 | ret = ATR_OK;
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450 | }
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451 | else
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452 | {
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453 | ret = ATR_NOT_FOUND;
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454 | }
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455 | }
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456 | else
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457 | {
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458 | ret = ATR_NOT_FOUND;
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459 | }
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460 |
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461 | return ret;
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462 | }
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463 |
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464 | int ATR_GetParameter (ATR * atr, int name, double *parameter)
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465 | {
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466 | BYTE FI, DI, II, PI1, PI2, N;
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467 |
|
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468 | if (name == ATR_PARAMETER_F)
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469 | {
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---|
470 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_FI, &FI) != ATR_OK)
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471 | FI = ATR_DEFAULT_FI;
|
---|
472 | (*parameter) = (double) (atr_f_table[FI]);
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473 | return (ATR_OK);
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474 | }
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475 | else if (name == ATR_PARAMETER_D)
|
---|
476 | {
|
---|
477 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_DI, &DI) == ATR_OK)
|
---|
478 | (*parameter) = (double) (atr_d_table[DI]);
|
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479 | else
|
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480 | (*parameter) = (double) ATR_DEFAULT_D;
|
---|
481 | return (ATR_OK);
|
---|
482 | }
|
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483 | else if (name == ATR_PARAMETER_I)
|
---|
484 | {
|
---|
485 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_II, &II) == ATR_OK)
|
---|
486 | (*parameter) = (double) (atr_i_table[II]);
|
---|
487 | else
|
---|
488 | (*parameter) = ATR_DEFAULT_I;
|
---|
489 | return (ATR_OK);
|
---|
490 | }
|
---|
491 | else if (name == ATR_PARAMETER_P)
|
---|
492 | {
|
---|
493 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_PI2, &PI2) == ATR_OK)
|
---|
494 | (*parameter) = (double) PI2;
|
---|
495 | else if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_PI1, &PI1) == ATR_OK)
|
---|
496 | (*parameter) = (double) PI1;
|
---|
497 | else
|
---|
498 | (*parameter) = (double) ATR_DEFAULT_P;
|
---|
499 | return (ATR_OK);
|
---|
500 | }
|
---|
501 | else if (name == ATR_PARAMETER_N)
|
---|
502 | {
|
---|
503 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_N, &N) == ATR_OK)
|
---|
504 | (*parameter) = (double) N;
|
---|
505 | else
|
---|
506 | (*parameter) = (double) ATR_DEFAULT_N;
|
---|
507 | return (ATR_OK);
|
---|
508 | }
|
---|
509 |
|
---|
510 | return (ATR_NOT_FOUND);
|
---|
511 | }
|
---|
512 |
|
---|
513 | int ATR_GetHistoricalBytes (ATR * atr, BYTE hist[ATR_MAX_HISTORICAL], unsigned *length)
|
---|
514 | {
|
---|
515 | if (atr->hbn == 0)
|
---|
516 | return (ATR_NOT_FOUND);
|
---|
517 |
|
---|
518 | (*length) = atr->hbn;
|
---|
519 | memcpy (hist, atr->hb, atr->hbn);
|
---|
520 | return (ATR_OK);
|
---|
521 | }
|
---|
522 |
|
---|
523 | int ATR_GetRaw (ATR * atr, BYTE buffer[ATR_MAX_SIZE], unsigned *length)
|
---|
524 | {
|
---|
525 | unsigned i, j;
|
---|
526 |
|
---|
527 | buffer[0] = atr->TS;
|
---|
528 | buffer[1] = atr->T0;
|
---|
529 |
|
---|
530 | j = 2;
|
---|
531 |
|
---|
532 | for (i = 0; i < atr->pn; i++)
|
---|
533 | {
|
---|
534 | if (atr->ib[i][ATR_INTERFACE_BYTE_TA].present)
|
---|
535 | buffer[j++] = atr->ib[i][ATR_INTERFACE_BYTE_TA].value;
|
---|
536 |
|
---|
537 | if (atr->ib[i][ATR_INTERFACE_BYTE_TB].present)
|
---|
538 | buffer[j++] = atr->ib[i][ATR_INTERFACE_BYTE_TB].value;
|
---|
539 |
|
---|
540 | if (atr->ib[i][ATR_INTERFACE_BYTE_TC].present)
|
---|
541 | buffer[j++] = atr->ib[i][ATR_INTERFACE_BYTE_TC].value;
|
---|
542 |
|
---|
543 | if (atr->ib[i][ATR_INTERFACE_BYTE_TD].present)
|
---|
544 | buffer[j++] = atr->ib[i][ATR_INTERFACE_BYTE_TD].value;
|
---|
545 | }
|
---|
546 |
|
---|
547 | if (atr->hbn > 0)
|
---|
548 | {
|
---|
549 | memcpy (&(buffer[j]), atr->hb, atr->hbn);
|
---|
550 | j += atr->hbn;
|
---|
551 | }
|
---|
552 |
|
---|
553 | if ((atr->TCK).present)
|
---|
554 | buffer[j++] = (atr->TCK).value;
|
---|
555 |
|
---|
556 | (*length) = j;
|
---|
557 |
|
---|
558 | return ATR_OK;
|
---|
559 | }
|
---|
560 |
|
---|
561 | int ATR_GetCheckByte (ATR * atr, BYTE * check_byte)
|
---|
562 | {
|
---|
563 | if (!((atr->TCK).present))
|
---|
564 | return (ATR_NOT_FOUND);
|
---|
565 |
|
---|
566 | (*check_byte) = (atr->TCK).value;
|
---|
567 | return (ATR_OK);
|
---|
568 | }
|
---|
569 |
|
---|
570 | int ATR_GetFsMax (ATR * atr, unsigned long *fsmax)
|
---|
571 | {
|
---|
572 | BYTE FI;
|
---|
573 |
|
---|
574 | if (ATR_GetIntegerValue (atr, ATR_INTEGER_VALUE_FI, &FI) == ATR_OK)
|
---|
575 | (*fsmax) = atr_fs_table[FI];
|
---|
576 | else
|
---|
577 | (*fsmax) = atr_fs_table[1];
|
---|
578 |
|
---|
579 | return (ATR_OK);
|
---|
580 | }
|
---|
581 |
|
---|
582 | /*
|
---|
583 | * Not exported functions definition
|
---|
584 | */
|
---|
585 |
|
---|
586 | static bool ATR_GetNextByte (IO_Serial * io, unsigned timeout, BYTE * byte, bool invert)
|
---|
587 | {
|
---|
588 | bool ret;
|
---|
589 | ret = IO_Serial_Read (io, timeout, 1, byte);
|
---|
590 | /* Para tarjetas inversas quiza */
|
---|
591 | if (invert)
|
---|
592 | (*byte) = ~(INVERT_BYTE (*byte));
|
---|
593 |
|
---|
594 | return ret;
|
---|
595 | }
|
---|