FreeCalypso > hg > fc-sim-tools

annotate utils/fcsim1-mkprov.c @ 82:28fae57b3e29

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fcsim1-mkprov: add OTA_C and OTA_D key generation
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 10 Apr 2021 23:21:47 +0000
parents 38c14fa89937
children 6041c601304d
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35
26d2ef843a99 fcsim1-mkprov utility implemented
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1 /*
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2 * This utility is the provisioning data generator for FCSIM1 cards.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/file.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <unistd.h>
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10
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11 static u_char iccid_bin[19], imsi_bin[15], msisdn_bin[20];
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12 static int msisdn_set, msisdn_plus;
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13 static unsigned num_cards = 1, access_class, msisdn_digits;
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14 static char *random_file = "/dev/urandom";
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15 static int random_fd;
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16
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17 static void
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18 set_iccid(arg)
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19 char *arg;
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20 {
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21 int rc;
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22
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23 rc = parse_decimal_shorthand(arg, iccid_bin, 18);
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24 if (rc < 0)
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25 exit(1); /* error msg already printed */
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26 }
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27
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28 static void
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29 set_imsi(arg)
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30 char *arg;
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31 {
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32 int rc;
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33
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34 rc = parse_decimal_shorthand(arg, imsi_bin, 15);
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35 if (rc < 0)
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36 exit(1); /* error msg already printed */
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37 }
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38
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39 static void
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40 set_msisdn(arg)
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41 char *arg;
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42 {
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43 int rc;
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44
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45 if (*arg == '+') {
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46 msisdn_plus = 1;
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47 arg++;
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48 }
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49 rc = parse_decimal_string_arg(arg, msisdn_bin, 20);
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50 if (rc < 0)
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51 exit(1); /* error msg already printed */
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52 msisdn_digits = rc;
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53 msisdn_set = 1;
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54 }
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55
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56 static void
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57 parse_cmdline(argc, argv)
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58 char **argv;
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59 {
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60 extern int optind;
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61 extern char *optarg;
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62 int c;
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63
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64 while ((c = getopt(argc, argv, "a:m:n:r:")) != EOF) {
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65 switch (c) {
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66 case 'a':
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67 if (optarg[0] < '0' || optarg[0] > '9' || optarg[1]) {
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68 fprintf(stderr, "error: invalid -a argument\n");
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69 exit(1);
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70 }
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71 access_class = optarg[0] - '0';
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72 continue;
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73 case 'm':
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74 set_msisdn(optarg);
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75 continue;
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76 case 'n':
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77 num_cards = atoi(optarg);
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78 continue;
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79 case 'r':
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80 random_file = optarg;
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81 continue;
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82 case '?':
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83 default:
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84 usage: fprintf(stderr,
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85 "usage: %s [options] start-iccid start-imsi\n",
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86 argv[0]);
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87 exit(1);
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88 }
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89 }
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90 if (argc - optind != 2)
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91 goto usage;
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92 set_iccid(argv[optind]);
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93 set_imsi(argv[optind+1]);
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94 }
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95
82
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96 static unsigned
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97 make_odd_parity(byte)
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98 unsigned byte;
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99 {
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100 unsigned mask, p;
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101
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102 p = 0;
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103 for (mask = 0x80; mask; mask >>= 1)
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104 if (byte & mask)
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105 p = !p;
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106 if (!p)
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107 byte ^= 0x01;
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108 return byte;
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109 }
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110
35
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111 static void
82
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112 get_random_key(strbuf, oddpar)
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113 char *strbuf;
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114 {
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115 u_char bin[16];
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116 char *dp;
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117 unsigned n;
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118 int rc;
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119
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120 rc = read(random_fd, bin, 16);
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121 if (rc != 16) {
35
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122 fprintf(stderr, "error reading from %s\n", random_file);
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123 exit(1);
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124 }
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125 if (oddpar) {
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126 for (n = 0; n < 16; n++)
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127 bin[n] = make_odd_parity(bin[n]);
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128 }
35
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129 dp = strbuf;
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130 for (n = 0; n < 16; n++) {
35
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131 sprintf(dp, "%02X", bin[n]);
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132 dp += 2;
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133 }
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134 *dp = '\0';
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135 }
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136
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137 static void
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138 make_one_card()
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139 {
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140 unsigned acc_mask;
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141 char iccid_str[20], imsi_str[16], ki_str[33];
82
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142 char msisdn_str[21], otac_str[33], otad_str[33];
35
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143
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144 nibbles_to_ascii(iccid_bin, 19, iccid_str);
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145 nibbles_to_ascii(imsi_bin, 15, imsi_str);
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146 acc_mask = 1 << access_class;
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147 get_random_key(ki_str, 0);
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148 get_random_key(otac_str, 1);
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149 get_random_key(otad_str, 1);
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150 printf("ICCID=%s IMSI=%s ACC=%04X Ki=%s OTA_C=%s OTA_D=%s", iccid_str,
28fae57b3e29 fcsim1-mkprov: add OTA_C and OTA_D key generation
Mychaela Falconia <falcon@freecalypso.org>
parents: 36
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151 imsi_str, acc_mask, ki_str, otac_str, otad_str);
35
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152 if (msisdn_set) {
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153 fputs(" MSISDN=", stdout);
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154 if (msisdn_plus)
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155 putchar('+');
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156 nibbles_to_ascii(msisdn_bin, msisdn_digits, msisdn_str);
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157 fputs(msisdn_str, stdout);
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158 }
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159 putchar('\n');
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160 }
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161
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162 main(argc, argv)
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163 char **argv;
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164 {
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165 unsigned n;
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166
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167 parse_cmdline(argc, argv);
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168 random_fd = open(random_file, O_RDONLY);
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169 if (random_fd < 0) {
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170 perror(random_file);
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171 exit(1);
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172 }
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173 for (n = 0; n < num_cards; n++) {
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Mychaela Falconia <falcon@freecalypso.org>
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174 iccid_bin[18] = compute_iccid_luhn(iccid_bin);
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175 make_one_card();
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176 decimal_string_increment(iccid_bin, 18);
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Mychaela Falconia <falcon@freecalypso.org>
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177 decimal_string_increment(imsi_bin, 15);
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Mychaela Falconia <falcon@freecalypso.org>
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178 if (msisdn_set)
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179 decimal_string_increment(msisdn_bin, msisdn_digits);
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180 access_class++;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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181 if (access_class >= 10)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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182 access_class = 0;
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parents:
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183 }
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parents:
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184 exit(0);
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185 }