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

NAME

       pcsc-spy - A PC/SC spy command

SYNOPSIS

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

DESCRIPTION

       pcsc-spy displays PC/SC calls of an application. It must be used with the libpcscspy.so library.

       To be able to spy the PC/SC layer, the application flow must be modified so that all PC/SC calls are redirected. Two options are available:

       - the application is linked with libpcsclite.so.1
       - the application loads the libpcsclite.so.1 library using dlopen(3)

OPTIONS

       -d, --diffable
	   Demove the variable parts (like handler values) from the output so that two execution can be more easily compared.

       -h, --help
	   Display a short help text.

       -n, --nocolor
	   Disable the output colorization (if you want redirect the output in a file for example).

       -v, --version
	   Print the version of the pcsc-spy program plus a copyright, a list of authors.

EXAMPLES

   Applications linked with libpcsclite.so.1
       We will use the standard LD_PRELOAD loader option to load our spying library.

       Example:
	LD_PRELOAD=/usr/lib/libpcscspy.so opensc-tool -a

   Application loading libpcsclite.so.1
       This is the case for the PC/SC wrappers like pyscard (for Python) and pcsc-perl (for Perl). The LD_PRELOAD mechanism can't be used. Instead
       we replace the libpcsclite.so.1 library by the spying one.

       You may use install_spy.sh and uninstall_spy.sh to install and uninstall the spying library.

       Using the spying library without pcsc-spy is not a problem but has side effects:

       - a line "libpcsclite_nospy.so.1: cannot open shared object file: No such file or directory" will be displayed

       - some CPU time will be lost because of the PC/SC calls redirection

   Starting the spy tool
	pcsc-spy

       If a command argument is passed we use it instead of the default ~/pcsc-spy FIFO file. It is then possible to record an execution log and
       use pcsc-spy multiple times on the same log.

       To create the log file just do:

	mkfifo ~/pcsc-spy
	cat ~/pcsc-spy > logfile

       and run your PC/SC application.

   Mac OS X
       The installation is not automatic. In the pcsc-lite/src/spy directory do:
	make framework

       Then copy the PCSC.framework directory in /tmp
	cp -a PCSC.framework /tmp

       Copy the official PCSC.framework (binary only) in /tmp
	cp /System/Library/Frameworks/PCSC.framework/PCSC /tmp

       Run the application to debug as:
	DYLD_FRAMEWORK_PATH=/tmp pcsctest

FILES

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

SEE ALSO

       pcscd(8)

AUTHOR

       This manual page was written by Ludovic Rousseau <rousseau@free.fr>

pcsc-lite 1.8.4 						    2012-02-01							       PCSC-SPY(1)