| 1 |
twoaday |
342 |
/* wptCardPCSC.cpp - PC/SC card API interface |
| 2 |
|
|
* Copyright (C) 2003, 2006 Timo Schulz |
| 3 |
|
|
* |
| 4 |
|
|
* This file is part of WinPT. |
| 5 |
|
|
* |
| 6 |
|
|
* WinPT is free software; you can redistribute it and/or modify |
| 7 |
|
|
* it under the terms of the GNU General Public License as published by |
| 8 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
|
|
* (at your option) any later version. |
| 10 |
|
|
* |
| 11 |
|
|
* WinPT is distributed in the hope that it will be useful, |
| 12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
|
|
* GNU General Public License for more details. |
| 15 |
|
|
*/ |
| 16 |
|
|
#ifdef HAVE_CONFIG_H |
| 17 |
|
|
#include <config.h> |
| 18 |
|
|
#endif |
| 19 |
|
|
|
| 20 |
|
|
#include <stdio.h> |
| 21 |
|
|
#include <windows.h> |
| 22 |
|
|
#ifndef __MINGW32__ |
| 23 |
|
|
#include <winscard.h> |
| 24 |
|
|
#else |
| 25 |
|
|
/* mingw32 has no win32 smartcard API definitions. */ |
| 26 |
|
|
typedef ULONG_PTR SCARDCONTEXT; |
| 27 |
|
|
#define SCARD_SCOPE_SYSTEM 2 |
| 28 |
|
|
#define SCARD_S_SUCCESS NO_ERROR |
| 29 |
|
|
#endif |
| 30 |
|
|
|
| 31 |
|
|
#include "wptTypes.h" |
| 32 |
|
|
#include "wptCard.h" |
| 33 |
|
|
|
| 34 |
|
|
#define load_dll_fnc(cast, name) (cast)GetProcAddress(hlib, name) |
| 35 |
|
|
|
| 36 |
|
|
|
| 37 |
|
|
typedef LONG (WINAPI *pcsc_establish_context_t) (unsigned long scope, |
| 38 |
|
|
const void *reserved1, |
| 39 |
|
|
const void *reserved2, |
| 40 |
|
|
unsigned long *r_context); |
| 41 |
|
|
typedef LONG (WINAPI *pcsc_release_context_t) (unsigned long context); |
| 42 |
|
|
|
| 43 |
|
|
static pcsc_establish_context_t pcsc_establish = NULL; |
| 44 |
|
|
static pcsc_release_context_t pcsc_release = NULL; |
| 45 |
|
|
static int pcsc_init = 0; |
| 46 |
|
|
|
| 47 |
|
|
|
| 48 |
|
|
static int |
| 49 |
|
|
pcsc_loadlib (void) |
| 50 |
|
|
{ |
| 51 |
|
|
HMODULE hlib; |
| 52 |
|
|
|
| 53 |
|
|
if (pcsc_init) |
| 54 |
|
|
return 0; |
| 55 |
|
|
hlib = LoadLibrary ("WINSCARD"); |
| 56 |
|
|
if (!hlib) |
| 57 |
|
|
goto fail; |
| 58 |
|
|
pcsc_establish = load_dll_fnc (pcsc_establish_context_t, |
| 59 |
|
|
"SCardEstablishContext"); |
| 60 |
|
|
pcsc_release = load_dll_fnc (pcsc_release_context_t, |
| 61 |
|
|
"SCardReleaseContext"); |
| 62 |
|
|
if (pcsc_establish != NULL && pcsc_release != NULL) |
| 63 |
|
|
goto success; |
| 64 |
|
|
|
| 65 |
|
|
fail: |
| 66 |
|
|
if (hlib != NULL) |
| 67 |
|
|
FreeLibrary (hlib); |
| 68 |
|
|
return -1; |
| 69 |
|
|
|
| 70 |
|
|
success: |
| 71 |
|
|
pcsc_init = 1; |
| 72 |
|
|
return 0; |
| 73 |
|
|
} |
| 74 |
|
|
|
| 75 |
|
|
|
| 76 |
|
|
/* Return != 0 if the PC/SC smart card interface is available. |
| 77 |
|
|
The purpose of the function is to disable smart card releation |
| 78 |
|
|
commands on systems with no scard readers. */ |
| 79 |
|
|
int |
| 80 |
|
|
pcsc_available (void) |
| 81 |
|
|
{ |
| 82 |
|
|
SCARDCONTEXT ctx; |
| 83 |
|
|
LONG err; |
| 84 |
|
|
|
| 85 |
|
|
if (pcsc_loadlib ()) |
| 86 |
|
|
return 0; |
| 87 |
|
|
|
| 88 |
|
|
err = pcsc_establish (SCARD_SCOPE_SYSTEM, NULL, NULL, &ctx); |
| 89 |
|
|
if (err == SCARD_S_SUCCESS) { |
| 90 |
|
|
pcsc_release (ctx); |
| 91 |
|
|
return -1; |
| 92 |
|
|
} |
| 93 |
|
|
return 0; |
| 94 |
|
|
} |
Parent Directory
| 
Revision Log