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annotate simtool/dispatch.c @ 85:b57cf64ece29

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fc-simtool project started
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 Jan 2021 00:32:10 +0000
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children 91486a77643e
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85
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1 /*
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2 * This module implements the command dispatch for fc-simtool
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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 <ctype.h>
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include <pcsclite.h>
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12 #include <winscard.h>
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13 #include "globals.h"
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14
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15 extern int cmd_select();
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16
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17 cmd_exit()
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18 {
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19 SCardDisconnect(hCard, SCARD_UNPOWER_CARD);
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20 SCardReleaseContext(hContext);
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21 exit(0);
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22 }
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23
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24 static struct cmdtab {
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25 char *cmd;
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26 int minargs;
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27 int maxargs;
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28 int (*func)();
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29 } cmdtab[] = {
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30 {"exit", 0, 0, cmd_exit},
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31 {"quit", 0, 0, cmd_exit},
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32 {"select", 1, 1, cmd_select},
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33 {0, 0, 0, 0}
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34 };
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35
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36 simtool_dispatch_cmd(cmd)
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37 char *cmd;
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38 {
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39 char *argv[10];
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40 char *cp, **ap;
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41 struct cmdtab *tp;
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42
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43 for (cp = cmd; isspace(*cp); cp++)
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44 ;
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45 if (!*cp || *cp == '#')
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46 return(0);
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47 argv[0] = cp;
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48 while (*cp && !isspace(*cp))
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49 cp++;
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50 if (*cp)
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51 *cp++ = '\0';
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52 for (tp = cmdtab; tp->cmd; tp++)
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53 if (!strcmp(tp->cmd, argv[0]))
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54 break;
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55 if (!tp->func) {
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56 fprintf(stderr, "error: no such command\n");
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57 return(-1);
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58 }
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59 for (ap = argv + 1; ; ) {
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60 while (isspace(*cp))
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61 cp++;
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62 if (!*cp || *cp == '#')
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63 break;
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64 if (ap - argv - 1 >= tp->maxargs) {
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65 fprintf(stderr, "error: too many arguments\n");
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66 return(-1);
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67 }
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68 *ap++ = cp;
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69 while (*cp && !isspace(*cp))
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70 cp++;
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71 if (*cp)
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72 *cp++ = '\0';
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73 }
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74 if (ap - argv - 1 < tp->minargs) {
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75 fprintf(stderr, "error: too few arguments\n");
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76 return(-1);
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77 }
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78 *ap = 0;
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79 return tp->func(ap - argv, argv);
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80 }