1 | /*
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2 | pps.c
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3 | Protocol Parameters Selection
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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 2001 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 "pps.h"
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26 | #include "atr.h"
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27 | #include "protocol_t0.h"
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28 | #include "protocol_t1.h"
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29 | #include <stdlib.h>
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30 | #include <stdio.h>
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31 | #include <string.h>
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32 | #include "ifd.h"
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33 | #include "../globals.h"
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34 |
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35 | /*
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36 | * Not exported constants definition
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37 | */
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38 |
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39 | #define PPS_DEFAULT_PROTOCOL 0x00
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40 |
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41 | /*
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42 | * Not exported macros definition
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43 | */
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44 |
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45 | #define PPS_HAS_PPS1(block) ((block[1] & 0x10) == 0x10)
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46 | #define PPS_HAS_PPS2(block) ((block[1] & 0x20) == 0x20)
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47 | #define PPS_HAS_PPS3(block) ((block[1] & 0x40) == 0x40)
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48 |
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49 | /*
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50 | * Not exported funtions declaration
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51 | */
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52 |
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53 | static int PPS_Exchange (BYTE * params, unsigned *length);
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54 |
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55 | static bool PPS_Match (BYTE * request, unsigned len_request, BYTE * reply, unsigned len_reply);
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56 |
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57 | static unsigned PPS_GetLength (BYTE * block);
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58 |
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59 | static int PPS_InitICC ();
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60 |
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61 | static int PPS_InitProtocol ();
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62 |
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63 | static BYTE PPS_GetPCK (BYTE * block, unsigned length);
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64 |
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65 | /*
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66 | * Exported functions definition
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67 | */
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68 |
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69 | PPS * PPS_New ()
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70 | {
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71 | PPS *pps;
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72 |
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73 | pps = (PPS *) malloc (sizeof (PPS));
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74 |
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75 | if (pps != NULL)
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76 | {
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77 | protocol = NULL;
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78 | parameters.t = PPS_DEFAULT_PROTOCOL;
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79 | parameters.FI = ATR_DEFAULT_FI;
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80 | parameters.d = ATR_DEFAULT_D;
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81 | parameters.n = ATR_DEFAULT_N;
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82 | }
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83 |
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84 | return pps;
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85 | }
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86 |
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87 | int PPS_Perform (PPS * pps, BYTE * params, unsigned *length)
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88 | {
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89 | //Performs PPS Exchange on command when *length >0
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90 | //If unsuccesfull, or when length <= 0
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91 | //Gets parametes from ATR
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92 | //If necessary perform PPS session
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93 | //
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94 | //Output is pps->params.FI,n,d,t set with correct values
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95 | //and switched SC-device conform these values to correct baudrate
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96 | //
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97 | //We need to store FI instread of F, because SCI_DEV works with FI
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98 | //and it is easier to overclock then
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99 | //also from FI -> F is easy, other way around not
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100 |
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101 | int ret;
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102 | bool PPS_success;
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103 |
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104 | /* Perform PPS Exchange if requested by command */
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105 | if ((*length) > 0)
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106 | {
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107 | ret = PPS_Exchange (params, length);
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108 |
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109 | /* Get parameters from PPS handsake */
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110 | if (ret == PPS_OK)
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111 | {
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112 | parameters.t = params[1] & 0x0F;
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113 |
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114 | if (PPS_HAS_PPS1 (params))
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115 | {
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116 | parameters.FI = (params[2] >> 4);
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117 | parameters.d = atr_d_table[(params[2] & 0x0F)];
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118 | }
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119 |
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120 | /*
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121 | ret = PPS_InitICC(pps);
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122 |
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123 | if (ret != PPS_OK)
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124 | return ret;
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125 | */
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126 | }
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127 | /*
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128 | else
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129 | {
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130 | return ret;
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131 | }
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132 | */
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133 | }
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134 | PPS_success = PPS_OK;
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135 | int protocol_selected = 0; //stores which TAi,TBi etc. bytes must be used 0 means not set
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136 | if ((*length) <= 0 || !PPS_success) // If not by command, or PPS Exchange by command failed: Try PPS Exchange by ATR or Get parameters from ATR
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137 | {
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138 | int numprot = atr->pn;
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139 | //if there is a trailing TD, this number is one too high
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140 | BYTE tx;
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141 | if (ATR_GetInterfaceByte (atr, numprot-1, ATR_INTERFACE_BYTE_TD, &tx) == ATR_OK)
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142 | if ((tx & 0xF0) == 0)
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143 | numprot--;
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144 | cs_debug("ATR reports %i protocol lines:",numprot);
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145 | int i,point;
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146 | char txt[50];
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147 | bool OffersT[3]; //T14 stored as T2
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148 | for (i = 0; i <= 2; i++)
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149 | OffersT[i] = FALSE;
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150 | for (i=1; i<= numprot; i++) {
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151 | point = 0;
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152 | if (ATR_GetInterfaceByte (atr, i, ATR_INTERFACE_BYTE_TA, &tx) == ATR_OK) {
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153 | sprintf((char *)txt+point,"TA%i=%02X ",i,tx);
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154 | point +=7;
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155 | }
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156 | if (ATR_GetInterfaceByte (atr, i, ATR_INTERFACE_BYTE_TB, &tx) == ATR_OK) {
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157 | sprintf((char *)txt+point,"TB%i=%02X ",i,tx);
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158 | point +=7;
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159 | }
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160 | if (ATR_GetInterfaceByte (atr, i, ATR_INTERFACE_BYTE_TC, &tx) == ATR_OK) {
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161 | sprintf((char *)txt+point,"TC%i=%02X ",i,tx);
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162 | point +=7;
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163 | }
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164 | if (ATR_GetInterfaceByte (atr, i, ATR_INTERFACE_BYTE_TD, &tx) == ATR_OK) {
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165 | sprintf((char *)txt+point,"TD%i=%02X ",i,tx);
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166 | point +=7;
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167 | tx &= 0X0F;
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168 | sprintf((char *)txt+point,"(T%i)",tx);
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169 | if (tx == 14)
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170 | OffersT[2] = TRUE;
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171 | else
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172 | OffersT[tx] = TRUE;
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173 | }
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174 | else {
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175 | sprintf((char *)txt+point,"no TD%i means T0",i);
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176 | OffersT[0] = TRUE;
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177 | }
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178 | cs_debug("%s",txt);
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179 | }
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180 |
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181 | int numprottype = 0;
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182 | for (i = 0; i <= 2; i++)
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183 | if (OffersT[i])
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184 | numprottype ++;
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185 | cs_debug("%i protocol types detected. Historical bytes: %s",numprottype, cs_hexdump(1,atr->hb,atr->hbn));
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186 |
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187 | //If more than one protocol type and/or TA1 parameter values other than the default values and/or N equeal to 255 is/are indicated in the answer to reset, the card shall know unambiguously, after having sent the answer to reset, which protocol type or/and transmission parameter values (FI, D, N) will be used. Consequently a selection of the protocol type and/or the transmission parameters values shall be specified.
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188 | ATR_GetParameter (atr, ATR_PARAMETER_N, &(parameters.n));
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189 | ATR_GetProtocolType(atr,1,&(parameters.t)); //get protocol from TD1
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190 | BYTE TA2;
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191 | bool SpecificMode = (ATR_GetInterfaceByte (atr, 2, ATR_INTERFACE_BYTE_TA, &TA2) == ATR_OK); //if TA2 present, specific mode, else negotiable mode
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192 | if (SpecificMode) {
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193 | parameters.t = TA2 & 0x0F;
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194 | if ((TA2 & 0x10) != 0x10) { //bit 5 set to 0 means F and D explicitly defined in interface characters
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195 | BYTE TA1;
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196 | if (ATR_GetInterfaceByte (atr, 1 , ATR_INTERFACE_BYTE_TA, &TA1) == ATR_OK) {
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197 | parameters.FI = TA1 >> 4;
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198 | ATR_GetParameter (atr, ATR_PARAMETER_D, &(parameters.d));
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199 | }
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200 | else {
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201 | parameters.FI = ATR_DEFAULT_FI;
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202 | parameters.d = ATR_DEFAULT_D;
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203 | }
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204 | }
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205 | else {
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206 | cs_log("Specific mode: speed 'implicitly defined', not sure how to proceed, assuming default values");
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207 | parameters.FI = ATR_DEFAULT_FI;
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208 | parameters.d = ATR_DEFAULT_D;
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209 | }
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210 | cs_debug("Specific mode: T%i, F=%.0f, D=%.6f, N=%.0f\n", parameters.t, (double) atr_f_table[parameters.FI], parameters.d, parameters.n);
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211 | }
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212 | else { //negotiable mode
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213 |
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214 | bool NeedsPTS = ((parameters.t != 14) && (numprottype > 1 || (atr->ib[0][ATR_INTERFACE_BYTE_TA].present == TRUE && atr->ib[0][ATR_INTERFACE_BYTE_TA].value != 0x11) || parameters.n == 255)); //needs PTS according to ISO 7816 , SCI gets stuck on our PTS
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215 | if (NeedsPTS) {
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216 | // PTSS PTS0 PTS1 PTS2 PTS3 PCK
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217 | // PTSS PTS0 PTS1 PCK
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218 | BYTE req[] = { 0xFF, 0x10, 0x00, 0x00 }; //we currently do not support PTS2, standard guardtimes
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219 | req[1]=0x10 | parameters.t; //PTS0 always flags PTS1 to be sent always
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220 | if (ATR_GetInterfaceByte (atr, 1, ATR_INTERFACE_BYTE_TA, &req[2]) != ATR_OK) //PTS1
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221 | req[2] = 0x11; //defaults FI and DI to 1
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222 | //req[3]=PPS_GetPCK(req,sizeof(req)-1); will be set by PPS_Exchange
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223 | unsigned int len = sizeof(req);
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224 | ret = PPS_Exchange (req, &len);
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225 | if (ret == PPS_OK) {
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226 | parameters.FI = req[2] >> 4;
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227 | BYTE DI = req[2] & 0x0F;
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228 | parameters.d = (double) (atr_d_table[DI]);
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229 | PPS_success = TRUE;
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230 | cs_debug("PTS Succesfull, selected protocol: T%i, F=%.0f, D=%.6f, N=%.0f\n", parameters.t, (double) atr_f_table[parameters.FI], parameters.d, parameters.n);
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231 | }
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232 | else
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233 | cs_ddump(req,4,"PTS Failure, response:");
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234 | }
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235 |
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236 | //FIXME Currently InitICC sets baudrate to 9600 for all T14 cards (=no switching);
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237 | //When for SCI, T14 protocol, TA1 is obeyed, this goes OK for mosts devices, but somehow on DM7025 Sky S02 card goes wrong when setting ETU (ok on DM800/DM8000)
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238 | if (!PPS_success) {//last PPS not succesfull
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239 | BYTE TA1;
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240 | if (ATR_GetInterfaceByte (atr, 1 , ATR_INTERFACE_BYTE_TA, &TA1) == ATR_OK) {
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241 | parameters.FI = TA1 >> 4;
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242 | ATR_GetParameter (atr, ATR_PARAMETER_D, &(parameters.d));
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243 | }
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244 | else { //do not obey TA1
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245 | parameters.FI = ATR_DEFAULT_FI;
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246 | parameters.d = ATR_DEFAULT_D;
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247 | }
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248 | ATR_GetProtocolType (atr, 1, &(parameters.t));
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249 | protocol_selected = 1;
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250 |
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251 | if (NeedsPTS) {
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252 | if ((parameters.d == 32) || (parameters.d == 12) || (parameters.d == 20))
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253 | parameters.d = 0; //behave conform "old" atr_d_table; viaccess cards that fail PTS need this
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254 | }
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255 | /////Here all non-ISO behaviour
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256 | /////End all non-ISO behaviour
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257 |
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258 | cs_debug("No PTS %s, selected protocol T%i, F=%.0f, D=%.6f, N=%.0f\n", NeedsPTS?"happened":"needed", parameters.t, (double) atr_f_table[parameters.FI], parameters.d, parameters.n);
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259 | }
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260 | }//end negotiable mode
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261 | }//end length<0
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262 |
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263 | //make sure no zero values
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264 | double F = (double) atr_f_table[parameters.FI];
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265 | if (!F) {
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266 | parameters.FI = ATR_DEFAULT_FI;
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267 | cs_log("Warning: F=0 is invalid, forcing FI=%d", parameters.FI);
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268 | }
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269 | if (!parameters.d) {
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270 | parameters.d = ATR_DEFAULT_D;
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271 | cs_log("Warning: D=0 is invalid, forcing D=%.0f",parameters.d);
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272 | }
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273 |
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274 | protocol_type = parameters.t;
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275 |
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276 | #ifdef DEBUG_PROTOCOL
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277 | printf("PPS: T=%i, F=%.0f, D=%.6f, N=%.0f\n",
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278 | parameters.t,
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279 | F,
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280 | parameters.d,
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281 | parameters.n);
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282 | #endif
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283 |
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284 | ret = PPS_InitICC(pps);
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285 |
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286 | if (ret != PPS_OK)
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287 | return ret;
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288 |
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289 | /* Initialize selected protocol with selected parameters */
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290 | return PPS_InitProtocol ();
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291 | }
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292 |
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293 | void * PPS_GetProtocol ()
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294 | {
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295 | return protocol;
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296 | }
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297 |
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298 | PPS_ProtocolParameters *PPS_GetProtocolParameters ()
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299 | {
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300 | /* User must Remember not to reference this struct after removing PPS */
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301 | return &(parameters);
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302 | }
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303 |
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304 | void PPS_Delete (PPS * pps)
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305 | {
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306 | free (pps);
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307 | }
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308 |
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309 | /*
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310 | * Not exported funtions definition
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311 | */
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312 |
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313 | static int PPS_Exchange (BYTE * params, unsigned *length)
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314 | {
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315 | BYTE confirm[PPS_MAX_LENGTH];
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316 | unsigned len_request, len_confirm;
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317 | int ret;
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318 | #ifdef DEBUG_PROTOCOL
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319 | int i;
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320 | #endif
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321 |
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322 | len_request = PPS_GetLength (params);
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323 | params[len_request - 1] = PPS_GetPCK(params, len_request - 1);
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324 |
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325 | #ifdef DEBUG_PROTOCOL
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326 | printf ("PPS: Sending request: ");
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327 | for (i = 0; i < len_request; i++)
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328 | printf ("%X ", params[i]);
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329 | printf ("\n");
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330 | #endif
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331 |
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332 | cs_debug("PTS: Sending request: %s", cs_hexdump(1, params, len_request));
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333 |
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334 | /* Send PPS request */
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335 | #ifdef COOL
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336 | //unsigned char ptsAck[10];
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337 | //u_int8 ptsLen = len_request;
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338 | unsigned short int ptsLen = len_request;
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339 | int Status = cnxt_smc_start_pps(handle, params, confirm, &ptsLen, TRUE);
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340 | printf ("cnxt_smc_start_pps Status=%i\n", Status);
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341 | len_confirm = ptsLen;
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342 | #ifdef DEBUG_PROTOCOL
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343 | printf("COOL: confirm: \n");
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344 | for (i = 0; i < ptsLen; i++)
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345 | printf ("%02X", confirm[i]);
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346 | printf ("\n");
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347 | fflush(stdout);
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348 | printf("COOL: req: \n");
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349 | for (i = 0; i < len_request; i++)
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350 | printf ("%02X", params[i]);
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351 | printf ("\n");
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352 | fflush(stdout);
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353 | #endif
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354 | if (Status)
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355 | return PPS_HANDSAKE_ERROR;
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356 | #else
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357 | if (ICC_Async_Transmit (len_request, params) != ICC_ASYNC_OK)
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358 | return PPS_ICC_ERROR;
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359 |
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360 | /* Get PPS confirm */
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361 | if (ICC_Async_Receive (2, confirm) != ICC_ASYNC_OK)
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362 | return PPS_ICC_ERROR;
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363 |
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364 | len_confirm = PPS_GetLength (confirm);
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365 |
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366 | if (ICC_Async_Receive (len_confirm - 2, confirm + 2) != ICC_ASYNC_OK)
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367 | return PPS_ICC_ERROR;
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368 |
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369 | #ifdef DEBUG_PROTOCOL
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370 | printf ("PPS: Receivig confirm: ");
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371 | for (i = 0; i < len_confirm; i++)
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372 | printf ("%X ", confirm[i]);
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373 | printf ("\n");
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374 | #endif
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375 |
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376 | cs_debug("PTS: Receiving confirm: %s", cs_hexdump(1, confirm, len_confirm));
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377 |
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378 | if (!PPS_Match (params, len_request, confirm, len_confirm))
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379 | ret = PPS_HANDSAKE_ERROR;
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380 | else
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381 | ret = PPS_OK;
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382 | #endif
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383 |
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384 | /* Copy PPS handsake */
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385 | memcpy (params, confirm, len_confirm);
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386 | (*length) = len_confirm;
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387 |
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388 | return ret;
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389 | }
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390 |
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391 | static bool PPS_Match (BYTE * request, unsigned len_request, BYTE * confirm, unsigned len_confirm)
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392 | {
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393 | /* See if the reply differs from request */
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394 | if ((len_request != len_confirm) || (memcmp (request, confirm, len_request)))
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395 | {
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396 | /* See if the card specifies other than default FI and D */
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397 | //if ((PPS_HAS_PPS1 (confirm)) && (confirm[2] != request[2]))
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398 | return FALSE;
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399 | }
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400 |
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401 | return TRUE;
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402 | }
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403 |
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404 | static unsigned PPS_GetLength (BYTE * block)
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405 | {
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406 | unsigned length = 3;
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407 |
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408 | if (PPS_HAS_PPS1 (block))
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409 | length++;
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410 |
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411 | if (PPS_HAS_PPS2 (block))
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412 | length++;
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413 |
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414 | if (PPS_HAS_PPS3 (block))
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415 | length++;
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416 |
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417 | return length;
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418 | }
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419 |
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420 | static int PPS_InitICC ()
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421 | {
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422 | #ifdef SCI_DEV
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423 | #include <sys/ioctl.h>
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424 | #include "sci_global.h"
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425 | #include "sci_ioctl.h"
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426 | if(reader[ridx].typ == R_INTERNAL)
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427 | {
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428 | int n;
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429 | SCI_PARAMETERS params;
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430 | //memset(¶ms,0,sizeof(SCI_PARAMETERS));
|
---|
431 | if (ioctl(reader[ridx].handle, IOCTL_GET_PARAMETERS, ¶ms) < 0 )
|
---|
432 | return PPS_ICC_ERROR;
|
---|
433 |
|
---|
434 | params.T = parameters.t;
|
---|
435 | params.fs = atr_fs_table[parameters.FI] / 1000000;
|
---|
436 | double F = (double) atr_f_table[parameters.FI];
|
---|
437 | //for Irdeto T14 cards, do not set ETU
|
---|
438 | if (!(atr->hbn >= 6 && !memcmp(atr->hb, "IRDETO", 6) && params.T == 14))
|
---|
439 | params.ETU = F / parameters.d;
|
---|
440 | if (parameters.n == 255) //only for T0 or also for T1?
|
---|
441 | params.EGT = 0;
|
---|
442 | else
|
---|
443 | params.EGT = parameters.n;
|
---|
444 |
|
---|
445 | double a;
|
---|
446 | ATR_GetParameter(atr, ATR_PARAMETER_P, &a);
|
---|
447 | params.P=(unsigned char)a;
|
---|
448 | ATR_GetParameter(atr, ATR_PARAMETER_I, &a);
|
---|
449 | params.I=(unsigned char)a;
|
---|
450 |
|
---|
451 | cs_debug("Setting T=%d fs=%lu mhz ETU=%d WWT=%d CWT=%d BWT=%d EGT=%d clock=%d check=%d P=%d I=%d U=%d", (int)params.T, params.fs, (int)params.ETU, (int)params.WWT, (int)params.CWT, (int)params.BWT, (int)params.EGT, (int)params.clock_stop_polarity, (int)params.check, (int)params.P, (int)params.I, (int)params.U);
|
---|
452 |
|
---|
453 | if (ioctl(reader[ridx].handle, IOCTL_SET_PARAMETERS, ¶ms)!=0)
|
---|
454 | return PPS_ICC_ERROR;
|
---|
455 |
|
---|
456 | }
|
---|
457 | #elif COOL
|
---|
458 | if(reader[ridx].typ == R_INTERNAL) {
|
---|
459 | int mhz = atr_fs_table[parameters.FI] / 10000;
|
---|
460 | if (!Cool_SetBaudrate(mhz))
|
---|
461 | return PPS_ICC_ERROR;
|
---|
462 | #ifdef DEBUG_PROTOCOL
|
---|
463 | printf("Coolstream: set clock to %i * 10kHz\n", mhz);
|
---|
464 | #endif
|
---|
465 | return PPS_OK;
|
---|
466 | }
|
---|
467 | #endif
|
---|
468 | {
|
---|
469 | unsigned long baudrate;
|
---|
470 | double F = (double) atr_f_table[parameters.FI];
|
---|
471 | if (parameters.t == 14)
|
---|
472 | baudrate = 9600;
|
---|
473 | else
|
---|
474 | baudrate = parameters.d * ICC_Async_GetClockRate () / F;
|
---|
475 |
|
---|
476 | #ifdef DEBUG_PROTOCOL
|
---|
477 | printf ("PPS: Baudrate = %d\n", (int)baudrate);
|
---|
478 | #endif
|
---|
479 |
|
---|
480 |
|
---|
481 | if (ICC_Async_SetBaudrate (baudrate) != ICC_ASYNC_OK)
|
---|
482 | return PPS_ICC_ERROR;
|
---|
483 |
|
---|
484 | return PPS_OK;
|
---|
485 | }
|
---|
486 | }
|
---|
487 |
|
---|
488 | static int PPS_InitProtocol ()
|
---|
489 | {
|
---|
490 | int ret;
|
---|
491 |
|
---|
492 | if (parameters.t == ATR_PROTOCOL_TYPE_T0)
|
---|
493 | {
|
---|
494 | ret = Protocol_T0_Init (&(parameters));
|
---|
495 |
|
---|
496 | if (ret != PROTOCOL_T0_OK)
|
---|
497 | {
|
---|
498 | protocol = NULL;
|
---|
499 | return PPS_PROTOCOL_ERROR;
|
---|
500 | }
|
---|
501 |
|
---|
502 | return PPS_OK;
|
---|
503 | }
|
---|
504 | else if (parameters.t == ATR_PROTOCOL_TYPE_T1)
|
---|
505 | {
|
---|
506 | ret = Protocol_T1_Init ();
|
---|
507 |
|
---|
508 | if (ret != PROTOCOL_T1_OK)
|
---|
509 | {
|
---|
510 | protocol = NULL;
|
---|
511 | return PPS_PROTOCOL_ERROR;
|
---|
512 | }
|
---|
513 |
|
---|
514 | return PPS_OK;
|
---|
515 | }
|
---|
516 | else if (parameters.t == ATR_PROTOCOL_TYPE_T14)
|
---|
517 | {
|
---|
518 | ret = Protocol_T14_Init (&(parameters));
|
---|
519 |
|
---|
520 | if (ret != PROTOCOL_T14_OK)
|
---|
521 | {
|
---|
522 | protocol = NULL;
|
---|
523 | return PPS_PROTOCOL_ERROR;
|
---|
524 | }
|
---|
525 |
|
---|
526 | return PPS_OK;
|
---|
527 | }
|
---|
528 | else
|
---|
529 | {
|
---|
530 | protocol = NULL;
|
---|
531 | }
|
---|
532 |
|
---|
533 | return PPS_PROTOCOL_ERROR;
|
---|
534 | }
|
---|
535 |
|
---|
536 | static BYTE PPS_GetPCK (BYTE * block, unsigned length)
|
---|
537 | {
|
---|
538 | BYTE pck;
|
---|
539 | unsigned i;
|
---|
540 |
|
---|
541 | pck = block[0];
|
---|
542 | for (i = 1; i < length; i++)
|
---|
543 | pck ^= block[i];
|
---|
544 |
|
---|
545 | return pck;
|
---|
546 | }
|
---|