trunk/Src/wptCardEditCB.cpp

/* wptCardEditCB.cpp - Card callbacks
 *      Copyright (C) 2003, 2004, 2005 Timo Schulz
 *      Copyright (C) 2005 g10 Code GmbH
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * WinPT 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, gpg_write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <windows.h>
#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include <stdlib.h>

#include "gpgme.h"
#include "wptCard.h"
#include "wptCardEdit.h"
#include "wptErrors.h"

#define save_write(val) ((val)? (val) : "")
static const char *stat_key = "";

/* Wrapper to emulate write(). */
static int
gpg_write (int fd, const void *buf, size_t buflen)
{
    HANDLE hd = (HANDLE)fd;
    DWORD n;

    #if 0 /* debug */
    MessageBox (NULL, (const char*)buf, stat_key, MB_OK);
    #endif
    WriteFile (hd, buf, buflen, &n, NULL);
    WriteFile (hd, "\n", 1, &n, NULL);
    return n;
}


/* Common card handler. Handle general card status events. */
static gpgme_error_t
common_card_handler (GpgCardEdit *c, gpgme_status_code_t code, 
                     const char *key, int fd)
{
    const char *s;

    if (!strcmp (key,  "cardctrl.insert_card.okay")) {
        if (c->card_cb) {
            s = c->card_cb (CARD_CTL_INSERT, c->cb_value);
            gpg_write (fd, s, strlen (s));
            return 0;
        }
    }

    if (code == GPGME_STATUS_CARDCTRL && 
        (*key == CARD_CTL_NO_CARD || *key == CARD_CTL_NO_READER))
        c->setResult (GPG_CARDRES_NOCARD);

    /* This can happen for example if a wrong PIN were
       submitted. In such a case, we quit ASAP. */
    if (code == GPGME_STATUS_SC_OP_FAILURE) {
        if (key && !strcmp (key, "2"))
            c->setResult (GPG_CARDRES_BAD_PIN);
        else if (key && !strcmp (key, "1"))
            c->setResult (GPG_CARDRES_CANCEL);
        s = "quit\n";
        gpg_write (fd, s, strlen (s));
        return 0;
    }
    return 0;
}


/* handler for changing PINs of cards. */
static gpgme_error_t
change_pin_handler (void *opaque, gpgme_status_code_t code, 
                    const char *key, int fd)
{
    GpgCardEdit *c = (GpgCardEdit *)opaque;
    const char *s = "";
    int type;

    if (!c)
        return gpg_error (GPG_ERR_EOF);

    stat_key = key; /* XXX: debug code */

    common_card_handler (c, code, key, fd);

    type = c->getType ();
    if (!strcmp (key,  "cardedit.prompt")) {
        if (c->cnt == 0) {
            c->cnt++;
            s = "admin";
        }
        else if (c->cnt == 1) {
            c->cnt++;
            s = "passwd";
        }
        else {
            c->reset ();
            s = "quit";
        }
        gpg_write (fd, s, strlen (s));
        return 0;
    }
    if (!strcmp (key,  "cardutil.change_pin.menu")) {
        if (c->cnt == 2) {
            c->cnt++;
            switch (type) {
            case GPG_EDITCARD_CHUPIN: s = "1"; break;
            case GPG_EDITCARD_UNBPIN: s = "2"; break;
            case GPG_EDITCARD_CHAPIN: s = "3"; break;
            default:                  s = "Q";
            }
            gpg_write (fd, s, strlen (s));
            return 0;
        }
        else if (c->cnt > 0) {
            gpg_write (fd, "Q", 1);
            return 0;
        }
    }
    if (type == GPG_EDITCARD_CHUPIN) {
        if (!strcmp (key, "passphrase.pin.ask")) {
            s = c->pin;
            c->cnt++;
        }
        if (!strcmp (key, "passphrase.pin.new.ask")) {
            s = c->pin_new;
            c->cnt++;
        }
        if (!strcmp (key, "passphrase.pin.repeat") || 
            !strcmp (key, "passphrase.ask")) {
            s = c->pin_new;
            c->cnt++;
        }
        gpg_write (fd, s, strlen (s));
    }
    else if (type == GPG_EDITCARD_CHAPIN) {
        if (!strcmp (key, "passphrase.adminpin.ask")) {
            s = c->admin_pin;
            c->cnt++;
        }
        if (!strcmp (key, "passphrase.adminpin.new.ask")) {
            s = c->pin_new;
            c->cnt++;
        }
        if (!strcmp (key, "passphrase.pin.repeat") ||
            !strcmp (key, "passphrase.ask")) {
            s = c->pin_new;
            c->cnt++;
        }
        gpg_write (fd, s, strlen (s));
    }
    else if (type == GPG_EDITCARD_UNBPIN) {
        /* todo */
    }

    return 0;
}


/* edit card attributes handler. */
static gpgme_error_t
editcard_handler (void * opaque, gpgme_status_code_t code, 
                  const char *key, int fd)
{
    GpgCardEdit *c = (GpgCardEdit *)opaque;   
    const char *s = "";
    int type;

    if (!c)
        return gpg_error (GPG_ERR_EOF);

    stat_key = key;

    common_card_handler (c, code, key, fd);

    type = c->getType ();
    if (!strcmp (key, "cardedit.prompt")) {
        if (c->getResult ()) { /* in case of an error we quit. */
            c->cnt = 0;
            s = "quit";
            gpg_write (fd, s, strlen (s));
            return 0;
        }
        if (c->cnt == 0) { /* first switch in the admin mode */
            c->cnt++;
            s = "admin";
            gpg_write (fd, s, strlen (s));
            return 0;
        }
        if (c->cnt == 1) {/* then run the send command */
            c->cnt++;
            switch (type) {
            case GPG_EDITCARD_NAME:   s = "name"; break;
            case GPG_EDITCARD_KEYURL: s = "url"; break;
            case GPG_EDITCARD_LOGIN:  s = "login"; break;
            case GPG_EDITCARD_SEX:    s = "sex"; break;
            case GPG_EDITCARD_LANG:   s = "lang"; break;
            case GPG_EDITCARD_GENKEY: s = "generate"; break;
            default:                  s =  "quit";
            }
            gpg_write (fd, s, strlen (s));
            return 0;
        }
        else if (c->cnt >= 2) {/* done: send exit */
            c->reset ();
            s = "quit";
            gpg_write (fd, s, strlen (s));
            return 0;
        }
    }
    if (c->cnt > 0) {
        if (!strcmp (key, "passphrase.adminpin.ask")) {
            gpg_write (fd, c->admin_pin, strlen (c->admin_pin));
            return 0;
        }
        if (!strcmp (key, "passphrase.pin.ask")) {
            gpg_write (fd, c->pin, strlen (c->pin));
            return 0;
        }
    }
    switch (type) {
    case GPG_EDITCARD_NAME:
        if (!strcmp (key, "keygen.smartcard.surname")) {
            s = save_write (c->edit.surname);
            gpg_write (fd, s, strlen (s));
        }
        else if (!strcmp (key, "keygen.smartcard.givenname")) {
            s = save_write (c->edit.givenname);
            gpg_write (fd, s, strlen (s));
        }
        break;

    case GPG_EDITCARD_KEYURL:
        if (!strcmp (key, "cardedit.change_url")) {
            s = save_write (c->edit.keyurl);
            gpg_write (fd, s, strlen (s));
        }
        break;

    case GPG_EDITCARD_LOGIN:
        if (!strcmp (key, "cardedit.change_login"))  {
            s = save_write (c->edit.login);
            gpg_write (fd, s, strlen (s));
        }
        break;

    case GPG_EDITCARD_SEX:
        if (!strcmp (key, "cardedit.change_sex")) {
            static char buf[2];
            if (c->edit.sex != 'M'
                && c->edit.sex != 'F'
                && c->edit.sex != ' ') {
                buf[0] = ' '; buf[1] = 0;
            }
            else {
                buf[0] = c->edit.sex; 
                buf[1] = 0;
            }
            gpg_write (fd, buf, strlen (buf));
        }
        break;

    case GPG_EDITCARD_LANG:
        if (!strcmp (key, "cardedit.change_lang")) {
            s = save_write (c->edit.lang);
            gpg_write (fd, s, strlen (s));
        }
        break;

    case GPG_EDITCARD_GENKEY:
        if (!strcmp (key, "passphrase.enter"))
            gpg_write (fd, c->keygen.pass, strlen (c->keygen.pass));
        if (!strcmp (key, "cardedit.genkeys.backup_enc")) {
            s = c->keygen.flags & GPG_CARDFLAG_BAKENC? "Y" : "N";
            gpg_write (fd, s, strlen (s));
        }
        if (!strcmp (key, "cardedit.genkeys.replace_keys")) {
            if (! (c->keygen.flags & GPG_CARDFLAG_REPLACE))
                c->cancel = 1;
            s = c->keygen.flags & GPG_CARDFLAG_REPLACE? "Y" : "N";
            gpg_write (fd, s, strlen (s));
        }
        else if (!strcmp (key, "keygen.valid")) {
            s = save_write (c->keygen.expdate);
            gpg_write (fd, s, strlen (s));
        }
        else if (!strcmp (key, "keygen.name")) {
            s = save_write (c->keygen.name);
            gpg_write (fd, s, strlen (s));
        }
        else if (!strcmp (key, "keygen.email")) {
            s = save_write (c->keygen.email);
            gpg_write (fd, s, strlen (s));
        }
        else if (!strcmp (key, "keygen.comment")) {
            s = save_write (c->keygen.comment);
            gpg_write (fd, s, strlen (s));
        }
        break;

    default:
        break;
    }
    
    return 0;
}


/* Check if a GPG status code occured which marks the
   current operation as failed.
   Return value: gpg error constant. */
static gpgme_error_t
map_result (GpgCardEdit *ce)
{
    if (!ce->getResult ())
        return gpg_error (GPG_ERR_NO_ERROR);
    if (ce->getResult () & GPG_CARDRES_NOCARD)
        return gpg_error (GPG_ERR_CARD_NOT_PRESENT);
    if (ce->getResult () & GPG_CARDRES_BAD_PIN)
        return gpg_error (GPG_ERR_BAD_PIN);
    return 0;
}


/* Wrapper around the gpgme card interface.
   @ctx: context to use.
   @ce:  card edit context.
   Return value: 0 on success. */
gpgme_error_t
gpg_card_edit (gpgme_ctx_t ctx, GpgCardEdit *ce)
{
    gpgme_data_t out;
    gpgme_error_t err;

    err = gpgme_data_new (&out);
    if (err)
        return err;

    if (ce->getType () > GPG_EDITCARD_CHPIN_ID)
        err = gpgme_op_card_edit (ctx, NULL, change_pin_handler, ce, out);
    else
        err = gpgme_op_card_edit (ctx, NULL, editcard_handler, ce, out);
    if (!err)
        err = map_result (ce);
    
    gpgme_data_release (out);
    return err;
}
1	werner	36	/* wptCardEditCB.cpp - Card callbacks
2			* Copyright (C) 2003, 2004, 2005 Timo Schulz
3			* Copyright (C) 2005 g10 Code GmbH
4			*
5			* This file is part of WinPT.
6			*
7			* WinPT is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* WinPT is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, gpg_write to the Free Software Foundation,
19			* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
20			*/
21			#ifdef HAVE_CONFIG_H
22			#include <config.h>
23			#endif
24
25			#include <windows.h>
26			#include <stdio.h>
27			#include <malloc.h>
28			#include <string.h>
29			#include <stdlib.h>
30
31			#include "gpgme.h"
32			#include "wptCard.h"
33			#include "wptCardEdit.h"
34			#include "wptErrors.h"
35
36			#define save_write(val) ((val)? (val) : "")
37			static const char *stat_key = "";
38
39			/* Wrapper to emulate write(). */
40			static int
41			gpg_write (int fd, const void *buf, size_t buflen)
42			{
43			HANDLE hd = (HANDLE)fd;
44			DWORD n;
45
46	twoaday	91	#if 0 /* debug */
47	werner	36	MessageBox (NULL, (const char*)buf, stat_key, MB_OK);
48	twoaday	91	#endif
49	werner	36	WriteFile (hd, buf, buflen, &n, NULL);
50			WriteFile (hd, "\n", 1, &n, NULL);
51			return n;
52			}
53
54
55			/* Common card handler. Handle general card status events. */
56			static gpgme_error_t
57			common_card_handler (GpgCardEdit *c, gpgme_status_code_t code,
58			const char *key, int fd)
59			{
60			const char *s;
61
62			if (!strcmp (key, "cardctrl.insert_card.okay")) {
63			if (c->card_cb) {
64			s = c->card_cb (CARD_CTL_INSERT, c->cb_value);
65			gpg_write (fd, s, strlen (s));
66			return 0;
67			}
68			}
69
70			if (code == GPGME_STATUS_CARDCTRL &&
71			(key == CARD_CTL_NO_CARD \|\| key == CARD_CTL_NO_READER))
72			c->setResult (GPG_CARDRES_NOCARD);
73
74			/* This can happen for example if a wrong PIN were
75			submitted. In such a case, we quit ASAP. */
76			if (code == GPGME_STATUS_SC_OP_FAILURE) {
77			if (key && !strcmp (key, "2"))
78			c->setResult (GPG_CARDRES_BAD_PIN);
79			else if (key && !strcmp (key, "1"))
80			c->setResult (GPG_CARDRES_CANCEL);
81			s = "quit\n";
82			gpg_write (fd, s, strlen (s));
83			return 0;
84			}
85			return 0;
86			}
87
88
89			/* handler for changing PINs of cards. */
90			static gpgme_error_t
91			change_pin_handler (void *opaque, gpgme_status_code_t code,
92			const char *key, int fd)
93			{
94			GpgCardEdit c = (GpgCardEdit )opaque;
95			const char *s = "";
96			int type;
97
98			if (!c)
99			return gpg_error (GPG_ERR_EOF);
100
101			stat_key = key; /* XXX: debug code */
102
103			common_card_handler (c, code, key, fd);
104
105			type = c->getType ();
106			if (!strcmp (key, "cardedit.prompt")) {
107			if (c->cnt == 0) {
108			c->cnt++;
109			s = "admin";
110			}
111			else if (c->cnt == 1) {
112			c->cnt++;
113			s = "passwd";
114			}
115			else {
116			c->reset ();
117			s = "quit";
118			}
119			gpg_write (fd, s, strlen (s));
120			return 0;
121			}
122			if (!strcmp (key, "cardutil.change_pin.menu")) {
123			if (c->cnt == 2) {
124			c->cnt++;
125			switch (type) {
126			case GPG_EDITCARD_CHUPIN: s = "1"; break;
127			case GPG_EDITCARD_UNBPIN: s = "2"; break;
128			case GPG_EDITCARD_CHAPIN: s = "3"; break;
129			default: s = "Q";
130			}
131			gpg_write (fd, s, strlen (s));
132			return 0;
133			}
134			else if (c->cnt > 0) {
135			gpg_write (fd, "Q", 1);
136			return 0;
137			}
138			}
139			if (type == GPG_EDITCARD_CHUPIN) {
140			if (!strcmp (key, "passphrase.pin.ask")) {
141			s = c->pin;
142			c->cnt++;
143			}
144			if (!strcmp (key, "passphrase.pin.new.ask")) {
145			s = c->pin_new;
146			c->cnt++;
147			}
148			if (!strcmp (key, "passphrase.pin.repeat") \|\|
149			!strcmp (key, "passphrase.ask")) {
150			s = c->pin_new;
151			c->cnt++;
152			}
153			gpg_write (fd, s, strlen (s));
154			}
155			else if (type == GPG_EDITCARD_CHAPIN) {
156			if (!strcmp (key, "passphrase.adminpin.ask")) {
157			s = c->admin_pin;
158			c->cnt++;
159			}
160			if (!strcmp (key, "passphrase.adminpin.new.ask")) {
161			s = c->pin_new;
162			c->cnt++;
163			}
164			if (!strcmp (key, "passphrase.pin.repeat") \|\|
165			!strcmp (key, "passphrase.ask")) {
166			s = c->pin_new;
167			c->cnt++;
168			}
169			gpg_write (fd, s, strlen (s));
170			}
171			else if (type == GPG_EDITCARD_UNBPIN) {
172			/* todo */
173			}
174
175			return 0;
176			}
177
178
179			/* edit card attributes handler. */
180			static gpgme_error_t
181			editcard_handler (void * opaque, gpgme_status_code_t code,
182			const char *key, int fd)
183			{
184			GpgCardEdit c = (GpgCardEdit )opaque;
185			const char *s = "";
186			int type;
187
188			if (!c)
189			return gpg_error (GPG_ERR_EOF);
190
191			stat_key = key;
192
193			common_card_handler (c, code, key, fd);
194
195			type = c->getType ();
196			if (!strcmp (key, "cardedit.prompt")) {
197			if (c->getResult ()) { /* in case of an error we quit. */
198			c->cnt = 0;
199			s = "quit";
200			gpg_write (fd, s, strlen (s));
201			return 0;
202			}
203			if (c->cnt == 0) { /* first switch in the admin mode */
204			c->cnt++;
205			s = "admin";
206			gpg_write (fd, s, strlen (s));
207			return 0;
208			}
209			if (c->cnt == 1) {/* then run the send command */
210			c->cnt++;
211			switch (type) {
212			case GPG_EDITCARD_NAME: s = "name"; break;
213			case GPG_EDITCARD_KEYURL: s = "url"; break;
214			case GPG_EDITCARD_LOGIN: s = "login"; break;
215			case GPG_EDITCARD_SEX: s = "sex"; break;
216			case GPG_EDITCARD_LANG: s = "lang"; break;
217			case GPG_EDITCARD_GENKEY: s = "generate"; break;
218			default: s = "quit";
219			}
220			gpg_write (fd, s, strlen (s));
221			return 0;
222			}
223			else if (c->cnt >= 2) {/* done: send exit */
224			c->reset ();
225			s = "quit";
226			gpg_write (fd, s, strlen (s));
227			return 0;
228			}
229			}
230			if (c->cnt > 0) {
231			if (!strcmp (key, "passphrase.adminpin.ask")) {
232			gpg_write (fd, c->admin_pin, strlen (c->admin_pin));
233			return 0;
234			}
235			if (!strcmp (key, "passphrase.pin.ask")) {
236			gpg_write (fd, c->pin, strlen (c->pin));
237			return 0;
238			}
239			}
240			switch (type) {
241			case GPG_EDITCARD_NAME:
242			if (!strcmp (key, "keygen.smartcard.surname")) {
243			s = save_write (c->edit.surname);
244			gpg_write (fd, s, strlen (s));
245			}
246			else if (!strcmp (key, "keygen.smartcard.givenname")) {
247			s = save_write (c->edit.givenname);
248			gpg_write (fd, s, strlen (s));
249			}
250			break;
251
252			case GPG_EDITCARD_KEYURL:
253			if (!strcmp (key, "cardedit.change_url")) {
254			s = save_write (c->edit.keyurl);
255			gpg_write (fd, s, strlen (s));
256			}
257			break;
258
259			case GPG_EDITCARD_LOGIN:
260			if (!strcmp (key, "cardedit.change_login")) {
261			s = save_write (c->edit.login);
262			gpg_write (fd, s, strlen (s));
263			}
264			break;
265
266			case GPG_EDITCARD_SEX:
267			if (!strcmp (key, "cardedit.change_sex")) {
268			static char buf[2];
269			if (c->edit.sex != 'M'
270			&& c->edit.sex != 'F'
271			&& c->edit.sex != ' ') {
272			buf[0] = ' '; buf[1] = 0;
273			}
274			else {
275			buf[0] = c->edit.sex;
276			buf[1] = 0;
277			}
278			gpg_write (fd, buf, strlen (buf));
279			}
280			break;
281
282			case GPG_EDITCARD_LANG:
283			if (!strcmp (key, "cardedit.change_lang")) {
284			s = save_write (c->edit.lang);
285			gpg_write (fd, s, strlen (s));
286			}
287			break;
288
289			case GPG_EDITCARD_GENKEY:
290			if (!strcmp (key, "passphrase.enter"))
291			gpg_write (fd, c->keygen.pass, strlen (c->keygen.pass));
292			if (!strcmp (key, "cardedit.genkeys.backup_enc")) {
293			s = c->keygen.flags & GPG_CARDFLAG_BAKENC? "Y" : "N";
294			gpg_write (fd, s, strlen (s));
295			}
296			if (!strcmp (key, "cardedit.genkeys.replace_keys")) {
297			if (! (c->keygen.flags & GPG_CARDFLAG_REPLACE))
298			c->cancel = 1;
299			s = c->keygen.flags & GPG_CARDFLAG_REPLACE? "Y" : "N";
300			gpg_write (fd, s, strlen (s));
301			}
302			else if (!strcmp (key, "keygen.valid")) {
303			s = save_write (c->keygen.expdate);
304			gpg_write (fd, s, strlen (s));
305			}
306			else if (!strcmp (key, "keygen.name")) {
307			s = save_write (c->keygen.name);
308			gpg_write (fd, s, strlen (s));
309			}
310			else if (!strcmp (key, "keygen.email")) {
311			s = save_write (c->keygen.email);
312			gpg_write (fd, s, strlen (s));
313			}
314			else if (!strcmp (key, "keygen.comment")) {
315			s = save_write (c->keygen.comment);
316			gpg_write (fd, s, strlen (s));
317			}
318			break;
319
320			default:
321			break;
322			}
323
324			return 0;
325			}
326
327
328			/* Check if a GPG status code occured which marks the
329			current operation as failed.
330			Return value: gpg error constant. */
331			static gpgme_error_t
332			map_result (GpgCardEdit *ce)
333			{
334			if (!ce->getResult ())
335			return gpg_error (GPG_ERR_NO_ERROR);
336			if (ce->getResult () & GPG_CARDRES_NOCARD)
337			return gpg_error (GPG_ERR_CARD_NOT_PRESENT);
338			if (ce->getResult () & GPG_CARDRES_BAD_PIN)
339			return gpg_error (GPG_ERR_BAD_PIN);
340			return 0;
341			}
342
343
344			/* Wrapper around the gpgme card interface.
345			@ctx: context to use.
346			@ce: card edit context.
347			Return value: 0 on success. */
348			gpgme_error_t
349			gpg_card_edit (gpgme_ctx_t ctx, GpgCardEdit *ce)
350			{
351			gpgme_data_t out;
352			gpgme_error_t err;
353
354			err = gpgme_data_new (&out);
355			if (err)
356			return err;
357
358			if (ce->getType () > GPG_EDITCARD_CHPIN_ID)
359			err = gpgme_op_card_edit (ctx, NULL, change_pin_handler, ce, out);
360			else
361			err = gpgme_op_card_edit (ctx, NULL, editcard_handler, ce, out);
362			if (!err)
363			err = map_result (ce);
364
365			gpgme_data_release (out);
366			return err;
367			}