ccid/src/utils.c

/*
    utils.c:
    Copyright (C) 2003-2004   Ludovic Rousseau

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

        You should have received a copy of the GNU Lesser General Public License
        along with this library; if not, write to the Free Software Foundation,
        Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

/*
 * $Id$
 */

#include <pcsclite.h>

#include "ccid.h"
#include "defs.h"
#include "ccid_ifdhandler.h"
#include "utils.h"
#include "debug.h"

int ReaderIndex[CCID_DRIVER_MAX_READERS];

void InitReaderIndex(void)
{
        int i;

        for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
                ReaderIndex[i] = -1;
} /* InitReaderIndex */

int GetNewReaderIndex(const int Lun)
{
        int i;

        /* check that Lun is NOT already used */
        for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
                if (Lun == ReaderIndex[i])
                        break;

        if (i < CCID_DRIVER_MAX_READERS)
        {
                DEBUG_CRITICAL2("Lun: %d is already used", Lun);
                return -1;
        }

        for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
                if (-1 == ReaderIndex[i])
                {
                        ReaderIndex[i] = Lun;
                        return i;
                }

        DEBUG_CRITICAL("ReaderIndex[] is full");
        return -1;
} /* GetReaderIndex */

int LunToReaderIndex(const int Lun)
{
        int i;

        for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
                if (Lun == ReaderIndex[i])
                        return i;

        DEBUG_CRITICAL2("Lun: %X not found", Lun);
        return -1;
} /* LunToReaderIndex */

void ReleaseReaderIndex(const int index)
{
        ReaderIndex[index] = -1;
} /* ReleaseReaderIndex */

1	/*
2	utils.c:
3	Copyright (C) 2003-2004 Ludovic Rousseau
4
5	This library is free software; you can redistribute it and/or
6	modify it under the terms of the GNU Lesser General Public
7	License as published by the Free Software Foundation; either
8	version 2.1 of the License, or (at your option) any later version.
9
10	This library is distributed in the hope that it will be useful,
11	but WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13	Lesser General Public License for more details.
14
15	You should have received a copy of the GNU Lesser General Public License
16	along with this library; if not, write to the Free Software Foundation,
17	Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18	*/
19
20	/*
21	* $Id$
22	*/
23
24	#include <pcsclite.h>
25
26	#include "ccid.h"
27	#include "defs.h"
28	#include "ccid_ifdhandler.h"
29	#include "utils.h"
30	#include "debug.h"
31
32	int ReaderIndex[CCID_DRIVER_MAX_READERS];
33
34	void InitReaderIndex(void)
35	{
36	int i;
37
38	for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
39	ReaderIndex[i] = -1;
40	} /* InitReaderIndex */
41
42	int GetNewReaderIndex(const int Lun)
43	{
44	int i;
45
46	/* check that Lun is NOT already used */
47	for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
48	if (Lun == ReaderIndex[i])
49	break;
50
51	if (i < CCID_DRIVER_MAX_READERS)
52	{
53	DEBUG_CRITICAL2("Lun: %d is already used", Lun);
54	return -1;
55	}
56
57	for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
58	if (-1 == ReaderIndex[i])
59	{
60	ReaderIndex[i] = Lun;
61	return i;
62	}
63
64	DEBUG_CRITICAL("ReaderIndex[] is full");
65	return -1;
66	} /* GetReaderIndex */
67
68	int LunToReaderIndex(const int Lun)
69	{
70	int i;
71
72	for (i=0; i<CCID_DRIVER_MAX_READERS; i++)
73	if (Lun == ReaderIndex[i])
74	return i;
75
76	DEBUG_CRITICAL2("Lun: %X not found", Lun);
77	return -1;
78	} /* LunToReaderIndex */
79
80	void ReleaseReaderIndex(const int index)
81	{
82	ReaderIndex[index] = -1;
83	} /* ReleaseReaderIndex */
84
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