pcsc-spy(1)

1PCSC-SPY(1)                       PC/SC lite                       PCSC-SPY(1)
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NAME

6       pcsc-spy - A PC/SC spy command
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SYNOPSIS

9       pcsc-spy [-n|--nocolor] [-d|--diffable] [-h|--help] [fifo_filename]
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DESCRIPTION

12       pcsc-spy displays PC/SC calls of an application. It must be used with
13       the libpcscspy.so library.
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15       To be able to spy the PC/SC layer, the application flow must be
16       modified so that all PC/SC calls are redirected. Two options are
17       available:
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19       - the application is linked with libpcsclite.so.1
20       - the application loads the libpcsclite.so.1 library using dlopen(3)
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OPTIONS

23       -d, --diffable
24           Remove the variable parts (like handler values) from the output so
25           that two execution can be more easily compared.
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27       -h, --help
28           Display a short help text.
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30       -n, --nocolor
31           Disable the output colorization (if you want redirect the output in
32           a file for example).
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34       -v, --version
35           Print the version of the pcsc-spy program plus a copyright, a list
36           of authors.
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EXAMPLES

39   Applications linked with libpcsclite.so.1
40       We will use the standard "LD_PRELOAD" loader option to load our spying
41       library.
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43       Example:
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45        LD_PRELOAD=/usr/lib/libpcscspy.so pcsc_scan
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47   Application loading libpcsclite.so.1
48       This is the case for the PC/SC wrappers like pyscard (for Python) and
49       pcsc-perl (for Perl). The LD_PRELOAD mechanism can't be used. Instead
50       we replace the libpcsclite.so.1 library by the spying one.
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52       You may use install_spy.sh and uninstall_spy.sh to install and
53       uninstall the spying library.
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55       Using the spying library without pcsc-spy is not a problem but has side
56       effects:
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58       - a line "libpcsclite_nospy.so.1: cannot open shared object file: No
59       such file or directory" will be displayed
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61       - some CPU time will be lost because of the PC/SC calls redirection
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63   Starting the spy tool
64        pcsc-spy
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66       If a command argument is passed we use it instead of the default
67       ~/pcsc-spy FIFO file. It is then possible to record an execution log
68       and use pcsc-spy multiple times on the same log.
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70       To create the log file just do:
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72        mkfifo ~/pcsc-spy
73        cat ~/pcsc-spy > logfile
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75       and run your PC/SC application.
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77   Mac OS X
78       The installation is not automatic. In the pcsc-lite/src/spy directory
79       do:
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81        make framework
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83       Then copy the PCSC.framework directory in /tmp
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85        cp -a PCSC.framework /tmp
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87       Copy the official PCSC.framework (binary only) in /tmp
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89        cp /System/Library/Frameworks/PCSC.framework/PCSC /tmp
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91       Run the application to debug as:
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93        DYLD_FRAMEWORK_PATH=/tmp pcsctest
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FILES

96       ~/pcsc-spy FIFO file is used by libpcsclite.so.1 to send the raw log
97       lines
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AUTHOR

103       This manual page was written by Ludovic Rousseau <rousseau@free.fr>
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107pcsc-lite 1.8.26                  2020-01-29                       PCSC-SPY(1)