aboutsummaryrefslogtreecommitdiffstats
path: root/libempathy/empathy-tls-certificate.c
blob: c14deec579d25a3d3eb62165c82247d6b022b890 (plain) (blame)
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
/*
 * empathy-tls-certificate.c - Source for EmpathyTLSCertificate
 * Copyright (C) 2010 Collabora Ltd.
 * @author Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
 *
 * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <config.h>

#include "empathy-tls-certificate.h"

#include <errno.h>

#include <glib/gstdio.h>

#include <gnutls/gnutls.h>
#include <gnutls/x509.h>

#include <telepathy-glib/gtypes.h>
#include <telepathy-glib/util.h>

#define DEBUG_FLAG EMPATHY_DEBUG_TLS
#include "empathy-debug.h"
#include "empathy-utils.h"

#include "extensions/extensions.h"

enum {
  /* proxy properties */
  PROP_CERT_TYPE = 1,
  PROP_CERT_DATA,
  PROP_STATE,
  LAST_PROPERTY,
};

typedef struct {
  GSimpleAsyncResult *async_prepare_res;

  /* TLSCertificate properties */
  gchar *cert_type;
  GPtrArray *cert_data;
  EmpTLSCertificateState state;

  gboolean is_prepared;
} EmpathyTLSCertificatePriv;

G_DEFINE_TYPE (EmpathyTLSCertificate, empathy_tls_certificate,
    TP_TYPE_PROXY);

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyTLSCertificate);

static void
tls_certificate_got_all_cb (TpProxy *proxy,
    GHashTable *properties,
    const GError *error,
    gpointer user_data,
    GObject *weak_object)
{
  GPtrArray *cert_data;
  EmpathyTLSCertificate *self = EMPATHY_TLS_CERTIFICATE (weak_object);
  EmpathyTLSCertificatePriv *priv = GET_PRIV (self);

  if (error != NULL)
    {
      g_simple_async_result_set_from_error (priv->async_prepare_res, error);
      g_simple_async_result_complete (priv->async_prepare_res);
      tp_clear_object (&priv->async_prepare_res);

      return;
    }

  priv->cert_type = g_strdup (tp_asv_get_string (properties,
          "CertificateType"));
  priv->state = tp_asv_get_uint32 (properties, "State", NULL);

  cert_data = tp_asv_get_boxed (properties, "CertificateChainData",
      TP_ARRAY_TYPE_UCHAR_ARRAY_LIST);
  g_assert (cert_data != NULL);
  priv->cert_data = g_boxed_copy (TP_ARRAY_TYPE_UCHAR_ARRAY_LIST, cert_data);

  DEBUG ("Got a certificate chain long %u, of type %s",
      priv->cert_data->len, priv->cert_type);

  priv->is_prepared = TRUE;

  g_simple_async_result_complete (priv->async_prepare_res);
  tp_clear_object (&priv->async_prepare_res);
}

void
empathy_tls_certificate_prepare_async (EmpathyTLSCertificate *self,
    GAsyncReadyCallback callback,
    gpointer user_data)
{
  EmpathyTLSCertificatePriv *priv = GET_PRIV (self);

  /* emit an error if we're already preparing the object */
  if (priv->async_prepare_res != NULL)
    {
      g_simple_async_report_error_in_idle (G_OBJECT (self),
          callback, user_data,
          G_IO_ERROR, G_IO_ERROR_PENDING,
          "%s",
          "Prepare operation already in progress on the TLS certificate.");

      return;
    }

  /* if the object is already prepared, just complete in idle */
  if (priv->is_prepared)
    {
      tp_simple_async_report_success_in_idle (G_OBJECT (self),
          callback, user_data, empathy_tls_certificate_prepare_async);

      return;
    }

  priv->async_prepare_res = g_simple_async_result_new (G_OBJECT (self),
      callback, user_data, empathy_tls_certificate_prepare_async);

  /* call GetAll() on the certificate */
  tp_cli_dbus_properties_call_get_all (self,
      -1, EMP_IFACE_AUTHENTICATION_TLS_CERTIFICATE,
      tls_certificate_got_all_cb, NULL, NULL,
      G_OBJECT (self));
}

gboolean
empathy_tls_certificate_prepare_finish (EmpathyTLSCertificate *self,
    GAsyncResult *result,
    GError **error)
{
  gboolean retval = TRUE;

  if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
          error))
    retval = FALSE;

  return retval;
}

static void
empathy_tls_certificate_finalize (GObject *object)
{
  EmpathyTLSCertificatePriv *priv = GET_PRIV (object);

  DEBUG ("%p", object);

  g_free (priv->cert_type);
  tp_clear_boxed (TP_ARRAY_TYPE_UCHAR_ARRAY_LIST, &priv->cert_data);

  G_OBJECT_CLASS (empathy_tls_certificate_parent_class)->finalize (object);
}

static void
empathy_tls_certificate_get_property (GObject *object,
    guint property_id,
    GValue *value,
    GParamSpec *pspec)
{
  EmpathyTLSCertificatePriv *priv = GET_PRIV (object);

  switch (property_id)
    {
    case PROP_CERT_TYPE:
      g_value_set_string (value, priv->cert_type);
      break;
    case PROP_CERT_DATA:
      g_value_set_boxed (value, priv->cert_data);
      break;
    case PROP_STATE:
      g_value_set_uint (value, priv->state);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
    }
}

static void
empathy_tls_certificate_init (EmpathyTLSCertificate *self)
{
  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
      EMPATHY_TYPE_TLS_CERTIFICATE, EmpathyTLSCertificatePriv);
}

static void
empathy_tls_certificate_class_init (EmpathyTLSCertificateClass *klass)
{
  GParamSpec *pspec;
  GObjectClass *oclass = G_OBJECT_CLASS (klass);
  TpProxyClass *pclass = TP_PROXY_CLASS (klass);

  oclass->get_property = empathy_tls_certificate_get_property;
  oclass->finalize = empathy_tls_certificate_finalize;

  pclass->interface = EMP_IFACE_QUARK_AUTHENTICATION_TLS_CERTIFICATE;
  pclass->must_have_unique_name = TRUE;

  g_type_class_add_private (klass, sizeof (EmpathyTLSCertificatePriv));

  pspec = g_param_spec_string ("cert-type", "Certificate type",
      "The type of this certificate.",
      NULL,
      G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
  g_object_class_install_property (oclass, PROP_CERT_TYPE, pspec);

  pspec = g_param_spec_boxed ("cert-data", "Certificate chain data",
      "The raw DER-encoded certificate chain data.",
      TP_ARRAY_TYPE_UCHAR_ARRAY_LIST,
      G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
  g_object_class_install_property (oclass, PROP_CERT_DATA, pspec);

  pspec = g_param_spec_uint ("state", "State",
      "The state of this certificate.",
      EMP_TLS_CERTIFICATE_STATE_PENDING, NUM_EMP_TLS_CERTIFICATE_STATES -1,
      EMP_TLS_CERTIFICATE_STATE_PENDING,
      G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
  g_object_class_install_property (oclass, PROP_STATE, pspec);
}

static void
cert_proxy_accept_cb (TpProxy *proxy,
    const GError *error,
    gpointer user_data,
    GObject *weak_object)
{
  GSimpleAsyncResult *accept_result = user_data;

  DEBUG ("Callback for accept(), error %p", error);

  if (error != NULL)
    {
      DEBUG ("Error was %s", error->message);
      g_simple_async_result_set_from_error (accept_result, error);
    }

  g_simple_async_result_complete (accept_result);
}

static void
cert_proxy_reject_cb (TpProxy *proxy,
    const GError *error,
    gpointer user_data,
    GObject *weak_object)
{
  GSimpleAsyncResult *reject_result = user_data;

  DEBUG ("Callback for reject(), error %p", error);

  if (error != NULL)
    {
      DEBUG ("Error was %s", error->message);
      g_simple_async_result_set_from_error (reject_result, error);
    }

  g_simple_async_result_complete (reject_result);
}

static const gchar *
reject_reason_get_dbus_error (EmpTLSCertificateRejectReason reason)
{
  const gchar *retval = NULL;

  switch (reason)
    {
    case EMP_TLS_CERTIFICATE_REJECT_REASON_UNTRUSTED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_UNTRUSTED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_EXPIRED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_EXPIRED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_NOT_ACTIVATED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_NOT_ACTIVATED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_FINGERPRINT_MISMATCH:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_FINGERPRINT_MISMATCH);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_HOSTNAME_MISMATCH:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_HOSTNAME_MISMATCH);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_SELF_SIGNED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_SELF_SIGNED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_REVOKED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_REVOKED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_INSECURE:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_INSECURE);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_LIMIT_EXCEEDED:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_LIMIT_EXCEEDED);
      break;
    case EMP_TLS_CERTIFICATE_REJECT_REASON_UNKNOWN:
    default:
      retval = tp_error_get_dbus_name (TP_ERROR_CERT_INVALID);
      break;
    }

  return retval;
}

EmpathyTLSCertificate *
empathy_tls_certificate_new (TpDBusDaemon *dbus,
    const gchar *bus_name,
    const gchar *object_path,
    GError **error)
{
  EmpathyTLSCertificate *retval = NULL;

  if (!tp_dbus_check_valid_bus_name (bus_name,
          TP_DBUS_NAME_TYPE_UNIQUE, error))
    goto finally;

  if (!tp_dbus_check_valid_object_path (object_path, error))
    goto finally;

  retval = g_object_new (EMPATHY_TYPE_TLS_CERTIFICATE,
      "dbus-daemon", dbus,
      "bus-name", bus_name,
      "object-path", object_path,
      NULL);

finally:
  if (*error != NULL)
    DEBUG ("Error while creating the TLS certificate: %s",
        (*error)->message);

  return retval;
}

void
empathy_tls_certificate_accept_async (EmpathyTLSCertificate *self,
    GAsyncReadyCallback callback,
    gpointer user_data)
{
  GSimpleAsyncResult *accept_result;

  g_assert (EMPATHY_IS_TLS_CERTIFICATE (self));

  DEBUG ("Accepting TLS certificate");

  accept_result = g_simple_async_result_new (G_OBJECT (self),
      callback, user_data, empathy_tls_certificate_accept_async);

  emp_cli_authentication_tls_certificate_call_accept (TP_PROXY (self),
      -1, cert_proxy_accept_cb,
      accept_result, g_object_unref,
      G_OBJECT (self));
}

gboolean
empathy_tls_certificate_accept_finish (EmpathyTLSCertificate *self,
    GAsyncResult *result,
    GError **error)
{
  if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
          error))
    return FALSE;

  return TRUE;
}

static GPtrArray *
build_rejections_array (EmpTLSCertificateRejectReason reason,
    GHashTable *details)
{
  GPtrArray *retval;
  GValueArray *rejection;

  retval = g_ptr_array_new ();
  rejection = tp_value_array_build (3,
      G_TYPE_UINT, reason,
      G_TYPE_STRING, reject_reason_get_dbus_error (reason),
      TP_HASH_TYPE_STRING_VARIANT_MAP, details,
      NULL);

  g_ptr_array_add (retval, rejection);

  return retval;
}

void
empathy_tls_certificate_reject_async (EmpathyTLSCertificate *self,
    EmpTLSCertificateRejectReason reason,
    GHashTable *details,
    GAsyncReadyCallback callback,
    gpointer user_data)
{
  GPtrArray *rejections;
  GSimpleAsyncResult *reject_result;

  g_assert (EMPATHY_IS_TLS_CERTIFICATE (self));

  DEBUG ("Rejecting TLS certificate with reason %u", reason);

  rejections = build_rejections_array (reason, details);
  reject_result = g_simple_async_result_new (G_OBJECT (self),
      callback, user_data, empathy_tls_certificate_reject_async);

  emp_cli_authentication_tls_certificate_call_reject (TP_PROXY (self),
      -1, rejections, cert_proxy_reject_cb,
      reject_result, g_object_unref, G_OBJECT (self));

  tp_clear_boxed (EMP_ARRAY_TYPE_TLS_CERTIFICATE_REJECTION_LIST,
      &rejections);
}

gboolean
empathy_tls_certificate_reject_finish (EmpathyTLSCertificate *self,
    GAsyncResult *result,
    GError **error)
{
  if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
          error))
    return FALSE;

  return TRUE;
}