annotate libcommon/globalopts.c @ 45:9eb5460f51a6

main tools: support both pcsc and serial back ends
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 21 Mar 2021 01:56:49 +0000
parents c9ef9e91dd8e
children
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1 /*
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2 * This module implements parsing of global command line options.
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3 */
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4
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5 #include <ctype.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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10 unsigned calypso_fd, pcsc_reader_num, serial_spenh;
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11 int use_pcsc;
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12 char *serial_device, *serial_baud;
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14 parse_global_options(argc, argv)
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15 char **argv;
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16 {
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17 extern char *optarg;
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18 int c;
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19
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20 while ((c = getopt(argc, argv, "+b:C:d:e:p:")) != EOF) {
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21 switch (c) {
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22 case 'b':
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23 serial_baud = optarg;
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24 continue;
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25 case 'C':
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26 calypso_fd = atoi(optarg);
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27 continue;
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28 case 'd':
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29 serial_device = optarg;
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30 continue;
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31 case 'e':
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32 if (!isdigit(optarg[0]) || optarg[1]) {
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33 bad_minus_e: fprintf(stderr, "error: bad -e argument\n");
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34 exit(1);
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35 }
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36 serial_spenh = optarg[0] - '0';
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37 switch (serial_spenh) {
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38 case 1:
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39 case 2:
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40 case 4:
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41 case 8:
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42 break;
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43 default:
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44 goto bad_minus_e;
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45 }
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46 continue;
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47 case 'p':
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48 use_pcsc = 1;
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49 pcsc_reader_num = atoi(optarg);
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50 continue;
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51 case '?':
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52 default:
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53 /* error msg already printed */
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54 exit(1);
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55 }
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56 }
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57 if (serial_device && use_pcsc) {
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58 fprintf(stderr,
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59 "error: -d and -p target selection options are mutually exclusive\n");
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60 exit(1);
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61 }
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62 if (!serial_device && (serial_baud || serial_spenh)) {
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63 fprintf(stderr,
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64 "error: -b and -e options are meaningless without -d\n");
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65 exit(1);
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66 }
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67 if (serial_baud && serial_spenh) {
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68 fprintf(stderr,
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69 "error: -b and -e options are mutually exclusive\n");
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70 exit(1);
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71 }
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72 return(0);
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73 }