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/***************************************************************************
begin : Mon Mar 01 2004
copyright : (C) 2004-2010 by Martin Preuss
email : martin@libchipcard.de
***************************************************************************
* Please see toplevel file COPYING for license details *
***************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <chipcard/chipcard.h>
#include <chipcard/client.h>
/*
* This is a small tutorial on how to use the basic functions of
* libchipcard. It just waits for a card to be inserted and prints some
* card's information.
* This is the most basic type of application using a chipcard, no error
* checking is performed.
*
* This tutorial is intended to show the basics only.
* After studying this tutorial you should advance to the next one, which
* will add some error checking.
*
* Usage:
* tutorial1b
*/
int main(int argc, char **argv)
{
/* The basic object of Libchipcard itself is LC_CLIENT.
* You must create and initialize such an object before doing anything
* with Libchipcard.
*/
LC_CLIENT *cl;
/* The other central object is LC_CARD. This is the object most card
* commands operate on.
*/
LC_CARD *card;
/* Create an instance of Libchipcard.
* Libchipcard wants to know what application is requesting its service to
* improve server-side logging. It also makes it easier to debug
* Libchipcard.
* The last parameter is the path to the data folder of Libchipcard.
* We don't want any special handling here so we provide a NULL to make
* Libchipcard use its default path.
*/
cl=LC_Client_new("tutorial1b", "1.0");
/* Initialize Libchipcard by reading its configuration file.
*/
LC_Client_Init(cl);
/* We now need to tell Libchipcard that we are interested in chipcards.
* After sending this command the chipcard server will notify us about
* available cards.
* Only now the server will be connected, and if we are the only client
* then the server now starts acquiring card readers.
*/
LC_Client_Start(cl);
/* It's always nice to tell the user what we expect of him. */
fprintf(stderr, "Please insert a chip card.\n");
/* Now that the server is informed about us being interested in chipcards
* we can just wait for the server to notify us about inserted cards.
* We will wait for about 30 seconds.
* The card retrieved via this call is automatically assigned exclusively
* to the caller, so we must release the card using LC_Client_ReleaseCard()
* as soon as we are finished with the card.
*/
LC_Client_GetNextCard(cl, &card, 30);
/* Now that we have found a card we can tell the server that we don't want
* to be informed about other cards.
*/
LC_Client_Stop(cl);
/* This performs some internal card type specific functions.
*/
LC_Card_Open(card);
/* Show the generic information available for this card
*/
LC_Card_Dump(card, 0);
/* Performs some internal card type specific functions.
*/
LC_Card_Close(card);
/* After working with the card we should always release it so that other
* clients may access it. If no other client is interested in this card
* the reader is shutdown after a grace period, so releasing a card after
* using it is always a good idea.
*/
LC_Client_ReleaseCard(cl, card);
/* Release all ressources assiciated with the given card.
*/
LC_Card_free(card);
/* Release all ressources associated with Libchipcard.
* You should always do this at the end of your program to prevent
* memory leaks.
*/
LC_Client_free(cl);
/* Aaaand that's it ;-)
*/
return 0;
}
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