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/* wptCardPCSC.cpp - PC/SC card API interface |
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* Copyright (C) 2003 Timo Schulz |
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* Copyright (C) 2003, 2004 Free Software Foundation, Inc. |
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* |
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* This file is part of WinPT. |
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* |
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* WinPT is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* WinPT is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with WinPT; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
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#include <stdio.h> |
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#include <stdio.h> |
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#include <windows.h> |
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|
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#include "gpgme.h" |
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#include "wptTypes.h" |
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#include "wptCard.h" |
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|
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|
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/* Definitions usually found in winscard.h but not used here becuase |
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mingw does not come with winscard and we dlopen the stuff |
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anyway. */ |
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typedef unsigned long pcsc_context_t; |
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|
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struct pcsc_readerstate_s |
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{ |
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const char *reader; |
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void *user_data; |
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unsigned long current_state; |
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unsigned long event_state; |
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unsigned long atrlen; |
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unsigned char atr[33]; |
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}; |
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|
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typedef struct pcsc_readerstate_s *pcsc_readerstate_t; |
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|
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/* PC/SC constants and function pointer. */ |
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#define PCSC_SCOPE_USER 0 |
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#define PCSC_SCOPE_TERMINAL 1 |
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#define PCSC_SCOPE_SYSTEM 2 |
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#define PCSC_SCOPE_GLOBAL 3 |
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|
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#define PCSC_PROTOCOL_T0 1 |
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#define PCSC_PROTOCOL_T1 2 |
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#define PCSC_PROTOCOL_RAW 4 |
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|
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#define PCSC_SHARE_EXCLUSIVE 1 |
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#define PCSC_SHARE_SHARED 2 |
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#define PCSC_SHARE_DIRECT 3 |
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|
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#define PCSC_LEAVE_CARD 0 |
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#define PCSC_RESET_CARD 1 |
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#define PCSC_UNPOWER_CARD 2 |
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#define PCSC_EJECT_CARD 3 |
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|
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#define PCSC_UNKNOWN 0x0001 |
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#define PCSC_ABSENT 0x0002 /* Card is absent. */ |
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#define PCSC_PRESENT 0x0004 /* Card is present. */ |
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#define PCSC_SWALLOWED 0x0008 /* Card is present and electrical connected. */ |
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#define PCSC_POWERED 0x0010 /* Card is powered. */ |
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#define PCSC_NEGOTIABLE 0x0020 /* Card is awaiting PTS. */ |
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#define PCSC_SPECIFIC 0x0040 /* Card is ready for use. */ |
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|
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#define PCSC_STATE_UNAWARE 0x0000 /* Want status. */ |
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#define PCSC_STATE_IGNORE 0x0001 /* Ignore this reader. */ |
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#define PCSC_STATE_CHANGED 0x0002 /* State has changed. */ |
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#define PCSC_STATE_UNKNOWN 0x0004 /* Reader unknown. */ |
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#define PCSC_STATE_UNAVAILABLE 0x0008 /* Status unavailable. */ |
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#define PCSC_STATE_EMPTY 0x0010 /* Card removed. */ |
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#define PCSC_STATE_PRESENT 0x0020 /* Card inserted. */ |
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#define PCSC_STATE_ATRMATCH 0x0040 /* ATR matches card. */ |
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#define PCSC_STATE_EXCLUSIVE 0x0080 /* Exclusive Mode. */ |
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#define PCSC_STATE_INUSE 0x0100 /* Shared mode. */ |
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#define PCSC_STATE_MUTE 0x0200 /* Unresponsive card. */ |
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|
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/* Some PC/SC error codes. */ |
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#define PCSC_E_CANCELLED 0x80100002 |
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#define PCSC_E_CANT_DISPOSE 0x8010000E |
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#define PCSC_E_INSUFFICIENT_BUFFER 0x80100008 |
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#define PCSC_E_INVALID_ATR 0x80100015 |
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#define PCSC_E_INVALID_HANDLE 0x80100003 |
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#define PCSC_E_INVALID_PARAMETER 0x80100004 |
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#define PCSC_E_INVALID_TARGET 0x80100005 |
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#define PCSC_E_INVALID_VALUE 0x80100011 |
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#define PCSC_E_NO_MEMORY 0x80100006 |
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#define PCSC_E_UNKNOWN_READER 0x80100009 |
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#define PCSC_E_TIMEOUT 0x8010000A |
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#define PCSC_E_SHARING_VIOLATION 0x8010000B |
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#define PCSC_E_NO_SMARTCARD 0x8010000C |
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#define PCSC_E_UNKNOWN_CARD 0x8010000D |
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#define PCSC_E_PROTO_MISMATCH 0x8010000F |
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#define PCSC_E_NOT_READY 0x80100010 |
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#define PCSC_E_SYSTEM_CANCELLED 0x80100012 |
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#define PCSC_E_NOT_TRANSACTED 0x80100016 |
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#define PCSC_E_READER_UNAVAILABLE 0x80100017 |
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#define PCSC_W_REMOVED_CARD 0x80100069 |
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|
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/* Possible card states. */ |
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enum card_state_t { |
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CARD_STATE_NONE=0, |
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CARD_STATE_UNAWARE, |
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CARD_STATE_UNAVAIL, |
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CARD_STATE_PRESENT, |
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CARD_STATE_EXCLUSI, |
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CARD_STATE_EMPTY, |
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CARD_STATE_INUSE, |
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CARD_STATE_MUTE |
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}; |
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|
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#define MAX_READERS 8 |
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|
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struct pcsc_reader_s { |
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struct pcsc_readerstate_s reader_states[MAX_READERS]; |
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int nreaders; |
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char * readers[MAX_READERS]; |
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}; |
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typedef struct pcsc_reader_s *pcsc_reader_t; |
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|
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|
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static LONG (WINAPI *pcsc_establish_context) (unsigned long scope, |
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const void *reserved1, |
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const void *reserved2, |
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unsigned long *r_context); |
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static LONG (WINAPI *pcsc_release_context) (unsigned long context); |
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static LONG (WINAPI *pcsc_list_readers) (unsigned long context, |
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const char *groups, |
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char *readers, |
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unsigned long *readerslen); |
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static LONG (WINAPI *pcsc_connect) (unsigned long context, |
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const char *reader, |
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unsigned long share_mode, |
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unsigned long preferred_protocols, |
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unsigned long *r_card, |
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unsigned long *r_active_protocol); |
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static LONG (WINAPI *pcsc_disconnect) (unsigned long card, |
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unsigned long disposition); |
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static LONG (WINAPI *pcsc_status) (unsigned long card, |
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char *reader, unsigned long *readerlen, |
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unsigned long *r_state, unsigned long *r_protocol, |
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unsigned char *atr, unsigned long *atrlen); |
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static LONG (WINAPI *pcsc_get_status_change)(unsigned long ctx, |
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unsigned long timeout, |
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pcsc_readerstate_t readerstate, |
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unsigned long creaders); |
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|
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static int pcsc_init = 0; |
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|
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|
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#define load_one_fnc(ptr, hlib, name) do { \ |
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a = ptr = (void *)GetProcAddress (hlib, name); \ |
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if (!a) { \ |
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char msg[256]; \ |
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_snprintf (msg, sizeof msg-1, "Could not load '%s'", name); \ |
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MessageBox (NULL, msg, "PC/SC Driver", MB_ICONERROR|MB_OK); \ |
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goto fail; \ |
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} \ |
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} while (0) |
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|
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|
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int |
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pcsc_loadlib (int scard_support) |
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{ |
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HMODULE hlib; |
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FARPROC a; |
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|
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if (!scard_support || pcsc_init) |
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return 0; |
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hlib = LoadLibrary ("WINSCARD"); |
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if (!hlib) |
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goto fail; |
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load_one_fnc (pcsc_establish_context, hlib, "SCardEstablishContext"); |
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load_one_fnc (pcsc_release_context, hlib, "SCardReleaseContext"); |
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load_one_fnc (pcsc_list_readers, hlib, "SCardListReadersA"); |
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load_one_fnc (pcsc_connect, hlib, "SCardConnectA"); |
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load_one_fnc (pcsc_disconnect, hlib, "SCardDisconnect"); |
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load_one_fnc (pcsc_status, hlib, "SCardStatusA"); |
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load_one_fnc (pcsc_get_status_change, hlib, "SCardGetStatusChangeA"); |
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goto success; |
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|
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fail: |
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FreeLibrary (hlib); |
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return -1; |
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success: |
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pcsc_init = 1; |
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FreeLibrary (hlib); |
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return 0; |
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} |
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|
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|
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void |
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pcsc_free_readers (pcsc_reader_t rd) |
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{ |
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int i; |
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|
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if (!rd) |
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return; |
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|
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for (i=0; i < rd->nreaders; i++) |
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safe_free (rd->readers[i]); |
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safe_free (rd); |
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} |
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|
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|
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const char * |
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pcsc_get_reader (pcsc_reader_t rd, int idx, int * ret_nrd) |
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{ |
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if (!rd) |
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return NULL; |
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if (idx == -1 && ret_nrd) { |
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*ret_nrd = rd->nreaders; |
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return NULL; |
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} |
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if (idx >= rd->nreaders) |
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idx=0; |
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return rd->readers[idx]; |
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} |
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|
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|
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int |
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pcsc_scan_readers (pcsc_reader_t * ret_rd) |
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{ |
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pcsc_reader_t rd; |
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pcsc_context_t hctx; |
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struct pcsc_readerstate_s rdstat; |
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DWORD readers; |
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LPSTR rdrstr; |
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char * p; |
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int i; |
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int rc, curr_rd=0; |
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|
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*ret_rd = NULL; |
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if (!pcsc_init) |
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return -1; |
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|
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rc = pcsc_establish_context (PCSC_SCOPE_SYSTEM, NULL, NULL, &hctx); |
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if (rc) |
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return -1; |
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|
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rc = pcsc_list_readers (hctx, NULL, NULL, &readers); |
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if (rc) |
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return -1; |
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|
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rdrstr = malloc (sizeof(char)*readers); |
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if (!rdrstr) |
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BUG (0); |
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|
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rc = pcsc_list_readers (hctx, NULL, rdrstr, &readers); |
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if (rc) { |
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safe_free (rdrstr); |
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return -1; |
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} |
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|
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rd = calloc (1, sizeof *rd); |
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if (!rd) |
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BUG (0); |
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|
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p = rdrstr; |
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while ((*p != '\0') && (rd->nreaders < MAX_READERS)) { |
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rd->readers[rd->nreaders] = strdup (p); |
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p += strlen (p)+1; |
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rd->nreaders++; |
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} |
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|
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if (!rd->nreaders) { |
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safe_free (rdrstr); |
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safe_free (rd); |
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return 0; |
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} |
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|
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/* set the initial states */ |
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for (i=0; i<rd->nreaders; i++) { |
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rd->reader_states[i].reader = rd->readers[i]; |
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rd->reader_states[i].current_state = PCSC_STATE_EMPTY; |
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} |
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|
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while (1) { |
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rdstat = rd->reader_states[curr_rd]; |
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rc = pcsc_get_status_change (hctx, 0, &rdstat, 1); |
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if (rc == PCSC_E_TIMEOUT) |
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continue; |
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if (rc) |
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; /* FIXME: What is this?? */ |
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|
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/* next reader */ |
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curr_rd++; |
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if (curr_rd >= rd->nreaders) |
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curr_rd = 0; |
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} |
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|
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safe_free (rdrstr); |
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*ret_rd = rd; |
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rc = pcsc_release_context (hctx); |
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if (rc) |
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return -1; |
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return 0; |
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} |
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|
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|
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int |
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pcsc_get_card_status (void) |
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{ |
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pcsc_reader_t rd; |
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struct pcsc_readerstate_s rdstat; |
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int rc, stat=0; |
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|
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rc = pcsc_scan_readers (&rd); |
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if (rc) |
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return -1; |
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rdstat = rd->reader_states[0]; |
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if (rdstat.current_state & PCSC_STATE_UNAVAILABLE) |
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stat |= CARD_STATE_UNAVAIL; |
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if (rdstat.current_state & PCSC_STATE_EMPTY) |
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stat |= CARD_STATE_EMPTY; |
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if (rdstat.current_state & PCSC_STATE_INUSE) |
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stat |= CARD_STATE_INUSE; |
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if (rdstat.current_state & PCSC_STATE_EXCLUSIVE) |
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stat |= CARD_STATE_EXCLUSI; |
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return stat; |
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} |
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