FreeCalypso > hg > freecalypso-hwlab

annotate simtool/cardconnect.c @ 173:df4bf4e06221

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doc: several articles moved to other repositories
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Sep 2023 06:51:05 +0000
parents b57cf64ece29
children
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1 #include <sys/types.h>
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2 #include <string.h>
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3 #include <strings.h>
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <pcsclite.h>
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7 #include <winscard.h>
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8 #include "globals.h"
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9
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10 setup_pcsc_context()
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11 {
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12 LONG rv;
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13
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14 rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);
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15 if (rv != SCARD_S_SUCCESS) {
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16 fprintf(stderr, "SCardEstablishContext: %s\n",
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17 pcsc_stringify_error(rv));
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18 exit(1);
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19 }
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20 return(0);
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21 }
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22
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23 get_reader_name()
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24 {
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25 LONG rv;
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26 DWORD dwReaders;
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27
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28 rv = SCardListReaders(hContext, NULL, NULL, &dwReaders);
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29 if (rv != SCARD_S_SUCCESS) {
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30 fprintf(stderr, "SCardListReaders 1st call: %s\n",
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31 pcsc_stringify_error(rv));
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32 SCardReleaseContext(hContext);
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33 exit(1);
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34 }
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35 if (dwReaders < 1) {
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36 fprintf(stderr,
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37 "error: dwReaders returned by SCardListReaders() is less than 1\n");
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38 SCardReleaseContext(hContext);
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39 exit(1);
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40 }
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41 reader_name_buf = malloc(dwReaders);
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42 if (!reader_name_buf) {
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43 perror("malloc for readers list");
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44 SCardReleaseContext(hContext);
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45 exit(1);
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46 }
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47 reader_name_buf[0] = '\0';
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48 rv = SCardListReaders(hContext, NULL, reader_name_buf, &dwReaders);
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49 if (rv != SCARD_S_SUCCESS) {
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50 fprintf(stderr, "SCardListReaders 2nd call: %s\n",
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51 pcsc_stringify_error(rv));
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52 SCardReleaseContext(hContext);
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53 exit(1);
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54 }
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55 if (reader_name_buf[0] == '\0') {
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56 fprintf(stderr,
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57 "error: list returned by SCardListReaders() begins with a NUL byte\n");
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58 SCardReleaseContext(hContext);
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59 exit(1);
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60 }
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61 if (!memchr(reader_name_buf, 0, dwReaders)) {
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62 fprintf(stderr,
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63 "error: list returned by SCardListReaders() does not contain a NUL byte\n");
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64 SCardReleaseContext(hContext);
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65 exit(1);
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66 }
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67 return(0);
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68 }
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69
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70 connect_to_card()
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71 {
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72 LONG rv;
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73 DWORD dwActiveProtocol;
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74
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75 rv = SCardConnect(hContext, reader_name_buf, SCARD_SHARE_EXCLUSIVE,
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76 SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);
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77 if (rv != SCARD_S_SUCCESS) {
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78 fprintf(stderr, "SCardConnect: %s\n", pcsc_stringify_error(rv));
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79 SCardReleaseContext(hContext);
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80 exit(1);
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81 }
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82 return(0);
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83 }