FreeCalypso > hg > fc-sim-tools

annotate libcommon/backend.c @ 78:f6d5cff989d6

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fc-uicc-tool batch stdin mode implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 09 Apr 2021 02:47:21 +0000
parents 9eb5460f51a6
children
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1 /*
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2 * This module is responsible for launching and connecting
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3 * our SIM card communication back end.
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4 */
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5
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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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9
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10 extern unsigned calypso_fd, pcsc_reader_num, serial_spenh;
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11 extern int use_pcsc;
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12 extern char *serial_device, *serial_baud;
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13
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14 static char calypso_be_pathname[] = "/opt/freecalypso/bin/fcsim-calypso-be";
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15 static char serial_be_pathname[] = "/opt/freecalypso/bin/fcsim-serial-be";
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16 static char pcsc_be_pathname[] = "/opt/freecalypso/bin/fc-pcsc-backend";
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17
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18 static char *backend_prog, *backend_argv[4], backend_optarg[16];
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19
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20 FILE *cpipeF, *rpipeF;
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21
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22 static void
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23 setup_be_calypso()
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24 {
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25 backend_prog = calypso_be_pathname;
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26 backend_argv[0] = "fcsim-calypso-be";
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27 sprintf(backend_optarg, "-C%u", calypso_fd);
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28 backend_argv[1] = backend_optarg;
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29 backend_argv[2] = 0;
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30 }
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31
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32 static void
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33 setup_be_pcsc()
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34 {
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35 backend_prog = pcsc_be_pathname;
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36 backend_argv[0] = "fc-pcsc-backend";
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37 sprintf(backend_optarg, "-p%u", pcsc_reader_num);
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38 backend_argv[1] = backend_optarg;
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39 backend_argv[2] = 0;
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40 }
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41
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42 static void
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43 setup_be_serial()
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44 {
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45 backend_prog = serial_be_pathname;
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46 backend_argv[0] = "fcsim-serial-be";
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47 backend_argv[1] = serial_device;
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48 if (serial_baud)
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49 backend_argv[2] = serial_baud;
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50 else if (serial_spenh) {
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51 sprintf(backend_optarg, "9600,55800,%u", serial_spenh);
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52 backend_argv[2] = backend_optarg;
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53 } else
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54 backend_argv[2] = "9600";
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55 backend_argv[3] = 0;
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56 }
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57
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58 launch_backend()
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59 {
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60 int cpipe[2], rpipe[2], rc;
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61
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62 if (calypso_fd)
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63 setup_be_calypso();
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64 else if (use_pcsc)
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65 setup_be_pcsc();
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66 else if (serial_device)
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67 setup_be_serial();
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68 else {
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69 fprintf(stderr, "error: no -d or -p target selected\n");
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70 exit(1);
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71 }
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72 if (pipe(cpipe) < 0 || pipe(rpipe) < 0) {
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73 perror("pipe");
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74 exit(1);
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75 }
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76 rc = vfork();
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77 if (rc < 0) {
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78 perror("vfork for launching back end");
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79 exit(1);
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80 }
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81 if (!rc) {
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82 /* we are in the child - prepare to exec the BE */
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83 dup2(cpipe[0], 0);
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84 dup2(rpipe[1], 1);
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85 close(cpipe[0]);
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86 close(cpipe[1]);
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87 close(rpipe[0]);
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88 close(rpipe[1]);
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89 /* do the exec */
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90 execv(backend_prog, backend_argv);
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91 perror(backend_prog);
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92 _exit(1);
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93 }
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94 close(cpipe[0]);
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95 close(rpipe[1]);
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96 cpipeF = fdopen(cpipe[1], "w");
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97 if (!cpipeF) {
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98 perror("fdopen");
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99 exit(1);
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100 }
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101 rpipeF = fdopen(rpipe[0], "r");
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102 if (!rpipeF) {
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103 perror("fdopen");
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104 exit(1);
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105 }
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106 return(0);
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107 }