summaryrefslogtreecommitdiff
path: root/plugins/smartcard/gsd-smartcard.c
blob: 91542008b32492d5252b1858499b6f192cb43380 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
/* msd-smartcard.c - smartcard object
 *
 * Copyright (C) 2006 Ray Strode <rstrode@redhat.com>
 *
 * This program 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, or (at your option)
 * any later version.
 *
 * This program 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
#define MSD_SMARTCARD_ENABLE_INTERNAL_API
#include "msd-smartcard.h"

#include <errno.h>
#include <string.h>
#include <unistd.h>

#include <glib.h>
#include <glib/gi18n.h>

#include <cert.h>
#include <nss.h>
#include <pk11func.h>
#include <prerror.h>
#include <secmod.h>
#include <secerr.h>

struct _MsdSmartcardPrivate {
        SECMODModule *module;
        MsdSmartcardState state;

        CK_SLOT_ID slot_id;
        int slot_series;

        PK11SlotInfo *slot;
        char *name;

        CERTCertificate *signing_certificate;
        CERTCertificate *encryption_certificate;
};

static void msd_smartcard_finalize (GObject *object);
static void msd_smartcard_class_install_signals (MsdSmartcardClass *card_class);
static void msd_smartcard_class_install_properties (MsdSmartcardClass *card_class);
static void msd_smartcard_set_property (GObject       *object,
                                        guint          prop_id,
                                        const GValue  *value,
                                        GParamSpec    *pspec);
static void msd_smartcard_get_property (GObject     *object,
                                        guint        prop_id,
                                        GValue      *value,
                                        GParamSpec  *pspec);
static void msd_smartcard_set_name (MsdSmartcard *card, const char *name);
static void msd_smartcard_set_slot_id (MsdSmartcard *card,
                                       int                 slot_id);
static void msd_smartcard_set_slot_series (MsdSmartcard *card,
                                           int          slot_series);
static void msd_smartcard_set_module (MsdSmartcard *card,
                                      SECMODModule *module);

static PK11SlotInfo *msd_smartcard_find_slot_from_id (MsdSmartcard *card,
                                                      int slot_id);

static PK11SlotInfo *msd_smartcard_find_slot_from_card_name (MsdSmartcard *card,
                                                             const char  *card_name);
#ifndef MSD_SMARTCARD_DEFAULT_SLOT_ID
#define MSD_SMARTCARD_DEFAULT_SLOT_ID ((gulong) -1)
#endif

#ifndef MSD_SMARTCARD_DEFAULT_SLOT_SERIES
#define MSD_SMARTCARD_DEFAULT_SLOT_SERIES -1
#endif

enum {
        PROP_0 = 0,
        PROP_NAME,
        PROP_SLOT_ID,
        PROP_SLOT_SERIES,
        PROP_MODULE,
        NUMBER_OF_PROPERTIES
};

enum {
        INSERTED,
        REMOVED,
        NUMBER_OF_SIGNALS
};

static guint msd_smartcard_signals[NUMBER_OF_SIGNALS];

G_DEFINE_TYPE (MsdSmartcard, msd_smartcard, G_TYPE_OBJECT);

static void
msd_smartcard_class_init (MsdSmartcardClass *card_class)
{
        GObjectClass *gobject_class;

        gobject_class = G_OBJECT_CLASS (card_class);

        gobject_class->finalize = msd_smartcard_finalize;

        msd_smartcard_class_install_signals (card_class);
        msd_smartcard_class_install_properties (card_class);

        g_type_class_add_private (card_class,
                                  sizeof (MsdSmartcardPrivate));
}

static void
msd_smartcard_class_install_signals (MsdSmartcardClass *card_class)
{
        GObjectClass *object_class;

        object_class = G_OBJECT_CLASS (card_class);

        msd_smartcard_signals[INSERTED] =
                g_signal_new ("inserted",
                          G_OBJECT_CLASS_TYPE (object_class),
                          G_SIGNAL_RUN_LAST,
                          G_STRUCT_OFFSET (MsdSmartcardClass,
                                           inserted),
                          NULL, NULL, g_cclosure_marshal_VOID__VOID,
                          G_TYPE_NONE, 0);

        msd_smartcard_signals[REMOVED] =
                g_signal_new ("removed",
                          G_OBJECT_CLASS_TYPE (object_class),
                          G_SIGNAL_RUN_LAST,
                          G_STRUCT_OFFSET (MsdSmartcardClass,
                                           removed),
                          NULL, NULL, g_cclosure_marshal_VOID__VOID,
                          G_TYPE_NONE, 0);
}

static void
msd_smartcard_class_install_properties (MsdSmartcardClass *card_class)
{
        GObjectClass *object_class;
        GParamSpec *param_spec;

        object_class = G_OBJECT_CLASS (card_class);
        object_class->set_property = msd_smartcard_set_property;
        object_class->get_property = msd_smartcard_get_property;

        param_spec = g_param_spec_ulong ("slot-id", _("Slot ID"),
                                   _("The slot the card is in"),
                                   1, G_MAXULONG,
                                   MSD_SMARTCARD_DEFAULT_SLOT_ID,
                                   G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
        g_object_class_install_property (object_class, PROP_SLOT_ID, param_spec);

        param_spec = g_param_spec_int ("slot-series", _("Slot Series"),
                                   _("per-slot card identifier"),
                                   -1, G_MAXINT,
                                   MSD_SMARTCARD_DEFAULT_SLOT_SERIES,
                                   G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
        g_object_class_install_property (object_class, PROP_SLOT_SERIES, param_spec);

        param_spec = g_param_spec_string ("name", _("name"),
                                      _("name"), NULL,
                                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
        g_object_class_install_property (object_class, PROP_NAME, param_spec);

        param_spec = g_param_spec_pointer ("module", _("Module"),
                                       _("smartcard driver"),
                                       G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
        g_object_class_install_property (object_class, PROP_MODULE, param_spec);
}

static void
msd_smartcard_set_property (GObject       *object,
                            guint          prop_id,
                            const GValue  *value,
                            GParamSpec    *pspec)
{
        MsdSmartcard *card = MSD_SMARTCARD (object);

        switch (prop_id) {
                case PROP_NAME:
                        msd_smartcard_set_name (card, g_value_get_string (value));
                        break;

                case PROP_SLOT_ID:
                        msd_smartcard_set_slot_id (card,
                                                   g_value_get_ulong (value));
                        break;

                case PROP_SLOT_SERIES:
                        msd_smartcard_set_slot_series (card,
                                                       g_value_get_int (value));
                        break;

                case PROP_MODULE:
                        msd_smartcard_set_module (card,
                                                  (SECMODModule *)
                                                  g_value_get_pointer (value));
                        break;

                default:
                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        }
}

CK_SLOT_ID
msd_smartcard_get_slot_id (MsdSmartcard *card)
{
        return card->priv->slot_id;
}

MsdSmartcardState
msd_smartcard_get_state (MsdSmartcard *card)
{
        return card->priv->state;
}

char *
msd_smartcard_get_name (MsdSmartcard *card)
{
        return g_strdup (card->priv->name);
}

gboolean
msd_smartcard_is_login_card (MsdSmartcard *card)
{
        const char *login_card_name;
        login_card_name = g_getenv ("PKCS11_LOGIN_TOKEN_NAME");

        if ((login_card_name == NULL) || (card->priv->name == NULL)) {
                return FALSE;
        }

        if (strcmp (card->priv->name, login_card_name) == 0) {
                return TRUE;
        }

        return FALSE;
}

static void
msd_smartcard_get_property (GObject    *object,
                            guint        prop_id,
                            GValue      *value,
                            GParamSpec  *pspec)
{
        MsdSmartcard *card = MSD_SMARTCARD (object);

        switch (prop_id) {
                case PROP_NAME:
                        g_value_take_string (value,
                                             msd_smartcard_get_name (card));
                        break;

                case PROP_SLOT_ID:
                        g_value_set_ulong (value,
                                           (gulong) msd_smartcard_get_slot_id (card));
                        break;

                case PROP_SLOT_SERIES:
                        g_value_set_int (value,
                                         msd_smartcard_get_slot_series (card));
                        break;

                default:
                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        }
}

static void
msd_smartcard_set_name (MsdSmartcard *card,
                        const char   *name)
{
        if (name == NULL) {
                return;
        }

        if ((card->priv->name == NULL) ||
            (strcmp (card->priv->name, name) != 0)) {
                g_free (card->priv->name);
                card->priv->name = g_strdup (name);

                if (card->priv->slot == NULL) {
                        card->priv->slot = msd_smartcard_find_slot_from_card_name (card,
                                                                                     card->priv->name);

                        if (card->priv->slot != NULL) {
                                int slot_id, slot_series;

                                slot_id = PK11_GetSlotID (card->priv->slot);
                                if (slot_id != card->priv->slot_id) {
                                        msd_smartcard_set_slot_id (card, slot_id);
                                }

                                slot_series = PK11_GetSlotSeries (card->priv->slot);
                                if (slot_series != card->priv->slot_series) {
                                        msd_smartcard_set_slot_series (card, slot_series);
                                }

                                _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_INSERTED);
                        } else {
                                _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_REMOVED);
                        }
                }

                g_object_notify (G_OBJECT (card), "name");
        }
}

static void
msd_smartcard_set_slot_id (MsdSmartcard *card,
                           int           slot_id)
{
        if (card->priv->slot_id != slot_id) {
                card->priv->slot_id = slot_id;

                if (card->priv->slot == NULL) {
                        card->priv->slot = msd_smartcard_find_slot_from_id (card,
                                                                             card->priv->slot_id);

                        if (card->priv->slot != NULL) {
                                const char *card_name;

                                card_name = PK11_GetTokenName (card->priv->slot);
                                if ((card->priv->name == NULL) ||
                                    ((card_name != NULL) &&
                                    (strcmp (card_name, card->priv->name) != 0))) {
                                        msd_smartcard_set_name (card, card_name);
                                }

                                _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_INSERTED);
                        } else {
                                _msd_smartcard_set_state (card, MSD_SMARTCARD_STATE_REMOVED);
                        }
                }

                g_object_notify (G_OBJECT (card), "slot-id");
        }
}

static void
msd_smartcard_set_slot_series (MsdSmartcard *card,
                               int           slot_series)
{
        if (card->priv->slot_series != slot_series) {
                card->priv->slot_series = slot_series;
                g_object_notify (G_OBJECT (card), "slot-series");
        }
}

static void
msd_smartcard_set_module (MsdSmartcard *card,
                          SECMODModule *module)
{
        gboolean should_notify;

        if (card->priv->module != module) {
                should_notify = TRUE;
        } else {
                should_notify = FALSE;
        }

        if (card->priv->module != NULL) {
                SECMOD_DestroyModule (card->priv->module);
                card->priv->module = NULL;
        }

        if (module != NULL) {
                card->priv->module = SECMOD_ReferenceModule (module);
        }

        if (should_notify) {
                g_object_notify (G_OBJECT (card), "module");
        }
}

int
msd_smartcard_get_slot_series (MsdSmartcard *card)
{
        return card->priv->slot_series;
}

static void
msd_smartcard_init (MsdSmartcard *card)
{

        g_debug ("initializing smartcard ");

        card->priv = G_TYPE_INSTANCE_GET_PRIVATE (card,
                                                  MSD_TYPE_SMARTCARD,
                                                  MsdSmartcardPrivate);

        if (card->priv->slot != NULL) {
                card->priv->name = g_strdup (PK11_GetTokenName (card->priv->slot));
        }
}

static void msd_smartcard_finalize (GObject *object)
{
        MsdSmartcard *card;
        GObjectClass *gobject_class;

        card = MSD_SMARTCARD (object);

        g_free (card->priv->name);

        msd_smartcard_set_module (card, NULL);

        gobject_class = G_OBJECT_CLASS (msd_smartcard_parent_class);

        gobject_class->finalize (object);
}

GQuark msd_smartcard_error_quark (void)
{
        static GQuark error_quark = 0;

        if (error_quark == 0) {
                error_quark = g_quark_from_static_string ("msd-smartcard-error-quark");
        }

        return error_quark;
}

MsdSmartcard *
_msd_smartcard_new (SECMODModule *module,
                    CK_SLOT_ID    slot_id,
                    int           slot_series)
{
        MsdSmartcard *card;

        g_return_val_if_fail (module != NULL, NULL);
        g_return_val_if_fail (slot_id >= 1, NULL);
        g_return_val_if_fail (slot_series > 0, NULL);
        g_return_val_if_fail (sizeof (gulong) == sizeof (slot_id), NULL);

        card = MSD_SMARTCARD (g_object_new (MSD_TYPE_SMARTCARD,
                                             "module", module,
                                             "slot-id", (gulong) slot_id,
                                             "slot-series", slot_series,
                                             NULL));
        return card;
}

MsdSmartcard *
_msd_smartcard_new_from_name (SECMODModule *module,
                              const char   *name)
{
        MsdSmartcard *card;

        g_return_val_if_fail (module != NULL, NULL);
        g_return_val_if_fail (name != NULL, NULL);

        card = MSD_SMARTCARD (g_object_new (MSD_TYPE_SMARTCARD,
                                            "module", module,
                                            "name", name,
                                            NULL));
        return card;
}

void
_msd_smartcard_set_state (MsdSmartcard      *card,
                          MsdSmartcardState  state)
{
        if (card->priv->state != state) {
                card->priv->state = state;

                if (state == MSD_SMARTCARD_STATE_INSERTED) {
                        g_signal_emit (card, msd_smartcard_signals[INSERTED], 0);
                } else if (state == MSD_SMARTCARD_STATE_REMOVED) {
                        g_signal_emit (card, msd_smartcard_signals[REMOVED], 0);
                } else {
                        g_assert_not_reached ();
                }
        }
}

/* So we could conceivably make the closure data a pointer to the card
 * or something similiar and then emit signals when we want passwords,
 * but it's probably easier to just get the password up front and use
 * it.  So we just take the passed in g_malloc'd (well probably, who knows)
 * and strdup it using NSPR's memory allocation routines.
 */
static char *
msd_smartcard_password_handler (PK11SlotInfo *slot,
                                PRBool        is_retrying,
                                const char   *password)
{
        if (is_retrying) {
                return NULL;
        }

        return password != NULL? PL_strdup (password): NULL;
}

gboolean
msd_smartcard_unlock (MsdSmartcard *card,
                      const char   *password)
{
        SECStatus status;

        PK11_SetPasswordFunc ((PK11PasswordFunc) msd_smartcard_password_handler);

        /* we pass PR_TRUE to load certificates
        */
        status = PK11_Authenticate (card->priv->slot, PR_TRUE, (gpointer) password);

        if (status != SECSuccess) {
                g_debug ("could not unlock card - %d", status);
                return FALSE;
        }
        return TRUE;
}

static PK11SlotInfo *
msd_smartcard_find_slot_from_card_name (MsdSmartcard *card,
                                        const char   *card_name)
{
        int i;

        for (i = 0; i < card->priv->module->slotCount; i++) {
                const char *slot_card_name;

                slot_card_name = PK11_GetTokenName (card->priv->module->slots[i]);

                if ((slot_card_name != NULL) &&
                    (strcmp (slot_card_name, card_name) == 0)) {
                        return card->priv->module->slots[i];
                }
        }

        return NULL;
}

static PK11SlotInfo *
msd_smartcard_find_slot_from_id (MsdSmartcard *card,
                                 int           slot_id)
{
        int i;

        for (i = 0; i < card->priv->module->slotCount; i++) {
                if (PK11_GetSlotID (card->priv->module->slots[i]) == slot_id) {
                        return card->priv->module->slots[i];
                }
        }

        return NULL;
}