FreeCalypso > hg > freecalypso-tools

annotate target-utils/simagent/exchange.c @ 816:b3724fe6c581

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fc-tmsh bsim commands implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 14 May 2021 17:16:43 +0000
parents 56506e9165bc
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
783
c136a1a2474b simagent: initial implementation of APDU exchange
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
c136a1a2474b simagent: initial implementation of APDU exchange
Mychaela Falconia <falcon@freecalypso.org>
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2 * This module implements our main function: exchange of command
c136a1a2474b simagent: initial implementation of APDU exchange
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3 * and response APDUs.
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4 */
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5
c136a1a2474b simagent: initial implementation of APDU exchange
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6 #include "types.h"
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7
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8 extern int sim_if_state;
c136a1a2474b simagent: initial implementation of APDU exchange
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9
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10 static void
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11 finish_sw(sw1, data, datalen)
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12 unsigned sw1, datalen;
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13 u8 *data;
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14 {
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15 unsigned sw2, n;
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Mychaela Falconia <falcon@freecalypso.org>
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16 int rc;
c136a1a2474b simagent: initial implementation of APDU exchange
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17
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18 rc = rx_sim_byte_hl();
c136a1a2474b simagent: initial implementation of APDU exchange
Mychaela Falconia <falcon@freecalypso.org>
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19 if (rc < 0)
c136a1a2474b simagent: initial implementation of APDU exchange
Mychaela Falconia <falcon@freecalypso.org>
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20 return;
c136a1a2474b simagent: initial implementation of APDU exchange
Mychaela Falconia <falcon@freecalypso.org>
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21 sw2 = rc;
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22 for (n = 0; n < datalen; n++)
c136a1a2474b simagent: initial implementation of APDU exchange
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23 printf("%02X", data[n]);
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24 printf("%02X%02X\n", sw1, sw2);
c136a1a2474b simagent: initial implementation of APDU exchange
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25 }
c136a1a2474b simagent: initial implementation of APDU exchange
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26
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27 static void
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28 exchange_data_out(ins, data, datalen)
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29 unsigned ins, datalen;
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30 u8 *data;
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31 {
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32 int rc;
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33 unsigned null_count, bytes_sent, ack, ack1;
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34
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35 ack = ins & 0xFE;
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36 ack1 = ~ins & 0xFE;
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37 bytes_sent = 0;
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38 null_count = 0;
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39 for (;;) {
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40 rc = rx_sim_byte_hl();
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41 if (rc < 0)
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42 return;
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43 if (rc == 0x60) {
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44 null_count++;
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45 if (null_count >= 32) {
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46 printf(
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47 "ERROR: too many stalling NULL bytes received from SIM\n");
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48 return;
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49 }
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50 continue;
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51 }
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52 if ((rc & 0xF0) == 0x60 || (rc & 0xF0) == 0x90) {
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53 finish_sw(rc, 0, 0);
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54 return;
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55 }
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56 if ((rc & 0xFE) == ack) {
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57 if (bytes_sent >= datalen) {
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58 bad_xfer_req: printf(
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59 "ERROR: SIM requests more xfer after we sent everything\n");
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60 return;
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61 }
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62 rc = send_to_sim(data + bytes_sent,
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63 datalen - bytes_sent);
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64 if (rc < 0)
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65 return;
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66 bytes_sent = datalen;
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67 continue;
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68 }
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69 if ((rc & 0xFE) == ack1) {
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70 if (bytes_sent >= datalen)
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71 goto bad_xfer_req;
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72 rc = send_to_sim(data + bytes_sent, 1);
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73 if (rc < 0)
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74 return;
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75 bytes_sent++;
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76 continue;
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77 }
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78 printf("ERROR: non-understood procedure byte %02X\n", rc);
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79 return;
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80 }
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81 }
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82
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83 static void
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84 exchange_data_in(ins, datalen)
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85 unsigned ins, datalen;
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86 {
785
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87 int rc;
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88 unsigned null_count, bytes_rcvd, ack, ack1;
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89 u8 data[256];
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90
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91 if (!datalen)
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92 datalen = 256;
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93 ack = ins & 0xFE;
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94 ack1 = ~ins & 0xFE;
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Mychaela Falconia <falcon@freecalypso.org>
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95 bytes_rcvd = 0;
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96 null_count = 0;
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97 for (;;) {
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98 rc = rx_sim_byte_hl();
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
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99 if (rc < 0)
56506e9165bc simagent: Rx data direction implemented for exchange
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100 return;
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101 if (rc == 0x60) {
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102 null_count++;
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103 if (null_count >= 32) {
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104 printf(
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105 "ERROR: too many stalling NULL bytes received from SIM\n");
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Mychaela Falconia <falcon@freecalypso.org>
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106 return;
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Mychaela Falconia <falcon@freecalypso.org>
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107 }
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108 continue;
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109 }
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110 if ((rc & 0xF0) == 0x60 || (rc & 0xF0) == 0x90) {
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111 finish_sw(rc, data, bytes_rcvd);
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112 return;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 784
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113 }
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Mychaela Falconia <falcon@freecalypso.org>
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114 if ((rc & 0xFE) == ack) {
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Mychaela Falconia <falcon@freecalypso.org>
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115 if (bytes_rcvd >= datalen) {
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Mychaela Falconia <falcon@freecalypso.org>
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116 bad_xfer_req: printf(
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117 "ERROR: SIM requests more xfer after we received all expected data\n");
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Mychaela Falconia <falcon@freecalypso.org>
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118 return;
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Mychaela Falconia <falcon@freecalypso.org>
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119 }
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Mychaela Falconia <falcon@freecalypso.org>
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120 while (bytes_rcvd < datalen) {
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Mychaela Falconia <falcon@freecalypso.org>
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121 rc = rx_sim_byte_hl();
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Mychaela Falconia <falcon@freecalypso.org>
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122 if (rc < 0)
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123 return;
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Mychaela Falconia <falcon@freecalypso.org>
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124 data[bytes_rcvd++] = rc;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 784
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125 }
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126 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 784
diff changeset
127 }
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Mychaela Falconia <falcon@freecalypso.org>
parents: 784
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128 if ((rc & 0xFE) == ack1) {
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Mychaela Falconia <falcon@freecalypso.org>
parents: 784
diff changeset
129 if (bytes_rcvd >= datalen)
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Mychaela Falconia <falcon@freecalypso.org>
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130 goto bad_xfer_req;
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Mychaela Falconia <falcon@freecalypso.org>
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131 rc = rx_sim_byte_hl();
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Mychaela Falconia <falcon@freecalypso.org>
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132 if (rc < 0)
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Mychaela Falconia <falcon@freecalypso.org>
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133 return;
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Mychaela Falconia <falcon@freecalypso.org>
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134 data[bytes_rcvd++] = rc;
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
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135 continue;
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
parents: 784
diff changeset
136 }
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
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137 printf("ERROR: non-understood procedure byte %02X\n", rc);
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
138 return;
56506e9165bc simagent: Rx data direction implemented for exchange
Mychaela Falconia <falcon@freecalypso.org>
parents: 784
diff changeset
139 }
783
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Mychaela Falconia <falcon@freecalypso.org>
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140 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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141
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Mychaela Falconia <falcon@freecalypso.org>
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142 void
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Mychaela Falconia <falcon@freecalypso.org>
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143 cmd_exchange(argstr)
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144 char *argstr;
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145 {
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146 u8 cmd[260];
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147 unsigned count;
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148 int rc;
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149
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150 if (sim_if_state != 2) {
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151 printf("ERROR: SIM interface is not up\n");
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152 return;
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153 }
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154 rc = decode_hex_string_arg(argstr, cmd, 260);
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155 if (rc < 0)
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156 return;
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157 count = rc;
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158 if (count < 5) {
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159 printf("ERROR: command APDU is shorter than 5 bytes\n");
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160 return;
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161 }
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162 rc = flush_rx_fifo();
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163 if (rc < 0)
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164 return;
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165 rc = send_to_sim(cmd, 5);
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166 if (rc < 0)
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167 return;
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168 if (count > 5)
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169 exchange_data_out(cmd[1], cmd + 5, count - 5);
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170 else
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171 exchange_data_in(cmd[1], cmd[4]);
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172 }