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annotate serial/exchange.c @ 99:97ba63d9361a

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scripts/fcsim1-sst: turn off STK & OTA services In the initial unprogrammed state of the cards from Grcard, SST has services 25 through 29 set to allocated and activated. However, these cards appear to not actually support OTA, ENVELOPE commands do nothing (just return SW 9000), and they were never observed issuing any proactive SIM commands, even after a feature-generous TERMINAL PROFILE. Therefore, let's list these STK & OTA services as allocated, but not activated in our FCSIM1 SST.
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 05 May 2021 04:26:07 +0000
parents be27d1c85861
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43
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1 /*
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2 * This module implements the main function of our back end:
be27d1c85861 serial: main function implemented
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3 * exchanging APDUs with the SIM.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8
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9 static
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10 collect_one_byte()
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11 {
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12 u_char buf;
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13 int rc;
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14
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15 rc = collect_bytes_from_sim(&buf, 1);
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16 if (rc < 0)
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17 return rc;
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18 else
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19 return buf;
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20 }
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21
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22 static void
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23 finish_sw(sw1, data, datalen)
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24 unsigned sw1, datalen;
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25 u_char *data;
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26 {
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27 unsigned sw2, n;
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28 int rc;
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29
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30 rc = collect_one_byte();
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31 if (rc < 0) {
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32 printf("back end error at SW2 Rx step\n");
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33 return;
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34 }
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35 sw2 = rc;
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36 for (n = 0; n < datalen; n++)
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37 printf("%02X", data[n]);
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38 printf("%02X%02X\n", sw1, sw2);
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39 }
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40
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41 static void
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42 exchange_data_out(ins, data, datalen)
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43 unsigned ins, datalen;
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44 u_char *data;
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45 {
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46 int rc;
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47 unsigned null_count, bytes_sent, ack, ack1;
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48
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49 ack = ins & 0xFE;
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50 ack1 = ~ins & 0xFE;
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51 bytes_sent = 0;
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52 null_count = 0;
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53 for (;;) {
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54 rc = collect_one_byte();
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55 if (rc < 0) {
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56 printf("back end error at procedure byte step\n");
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57 return;
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58 }
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59 if (rc == 0x60) {
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60 null_count++;
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61 if (null_count >= 32) {
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62 printf(
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63 "ERROR: too many stalling NULL bytes received from SIM\n");
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64 return;
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65 }
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66 continue;
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67 }
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68 if ((rc & 0xF0) == 0x60 || (rc & 0xF0) == 0x90) {
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69 finish_sw(rc, 0, 0);
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70 return;
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71 }
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72 if ((rc & 0xFE) == ack) {
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73 if (bytes_sent >= datalen) {
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74 bad_xfer_req: printf(
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75 "ERROR: SIM requests more xfer after we sent everything\n");
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76 return;
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77 }
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78 rc = send_bytes_to_sim(data + bytes_sent,
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79 datalen - bytes_sent);
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80 if (rc < 0) {
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81 printf("back end error at data output step\n");
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82 return;
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83 }
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84 bytes_sent = datalen;
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85 continue;
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86 }
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87 if ((rc & 0xFE) == ack1) {
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88 if (bytes_sent >= datalen)
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89 goto bad_xfer_req;
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90 rc = send_bytes_to_sim(data + bytes_sent, 1);
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91 if (rc < 0) {
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92 printf("back end error at data output step\n");
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93 return;
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94 }
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95 bytes_sent++;
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96 continue;
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97 }
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98 printf("ERROR: non-understood procedure byte %02X\n", rc);
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99 return;
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100 }
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101 }
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102
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103 static void
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104 exchange_data_in(ins, datalen)
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105 unsigned ins, datalen;
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106 {
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107 int rc;
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108 unsigned null_count, bytes_rcvd, ack, ack1;
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109 u_char data[256];
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110
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111 if (!datalen)
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112 datalen = 256;
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113 ack = ins & 0xFE;
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114 ack1 = ~ins & 0xFE;
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Mychaela Falconia <falcon@freecalypso.org>
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115 bytes_rcvd = 0;
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116 null_count = 0;
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117 for (;;) {
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118 rc = collect_one_byte();
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119 if (rc < 0) {
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120 printf("back end error at procedure byte step\n");
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121 return;
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122 }
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Mychaela Falconia <falcon@freecalypso.org>
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123 if (rc == 0x60) {
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124 null_count++;
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125 if (null_count >= 32) {
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126 printf(
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Mychaela Falconia <falcon@freecalypso.org>
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127 "ERROR: too many stalling NULL bytes received from SIM\n");
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Mychaela Falconia <falcon@freecalypso.org>
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128 return;
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Mychaela Falconia <falcon@freecalypso.org>
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129 }
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130 continue;
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131 }
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132 if ((rc & 0xF0) == 0x60 || (rc & 0xF0) == 0x90) {
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133 finish_sw(rc, data, bytes_rcvd);
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134 return;
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135 }
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Mychaela Falconia <falcon@freecalypso.org>
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136 if ((rc & 0xFE) == ack) {
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Mychaela Falconia <falcon@freecalypso.org>
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137 if (bytes_rcvd >= datalen) {
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Mychaela Falconia <falcon@freecalypso.org>
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138 bad_xfer_req: printf(
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
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139 "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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140 return;
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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 rc = collect_bytes_from_sim(data + bytes_rcvd,
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Mychaela Falconia <falcon@freecalypso.org>
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143 datalen - bytes_rcvd);
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Mychaela Falconia <falcon@freecalypso.org>
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144 if (rc < 0) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 printf("back end error at data input step\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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146 return;
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Mychaela Falconia <falcon@freecalypso.org>
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147 }
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Mychaela Falconia <falcon@freecalypso.org>
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148 bytes_rcvd = datalen;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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149 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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150 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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151 if ((rc & 0xFE) == ack1) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 if (bytes_rcvd >= datalen)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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153 goto bad_xfer_req;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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154 rc = collect_one_byte();
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 if (rc < 0) {
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
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156 printf("back end error at data input step\n");
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
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157 return;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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158 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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159 data[bytes_rcvd++] = rc;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 continue;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 printf("ERROR: non-understood procedure byte %02X\n", rc);
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 return;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 }
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 }
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 apdu_exchange(cmd_apdu, cmd_apdu_len)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 u_char *cmd_apdu;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 unsigned cmd_apdu_len;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 {
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 int rc;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 rc = send_bytes_to_sim(cmd_apdu, 5);
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 if (rc < 0) {
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 printf("back end error at the command sending step\n");
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 return;
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 }
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 if (cmd_apdu_len > 5)
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 exchange_data_out(cmd_apdu[1], cmd_apdu + 5, cmd_apdu_len - 5);
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 else
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 exchange_data_in(cmd_apdu[1], cmd_apdu[4]);
be27d1c85861 serial: main function implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 }