2 * empathy-tls-certificate.c - Source for EmpathyTLSCertificate
3 * Copyright (C) 2010 Collabora Ltd.
4 * @author Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "empathy-tls-certificate.h"
27 #include <glib/gstdio.h>
29 #include <gnutls/gnutls.h>
30 #include <gnutls/x509.h>
32 #include <telepathy-glib/util.h>
34 #define DEBUG_FLAG EMPATHY_DEBUG_TLS
35 #include "empathy-debug.h"
36 #include "empathy-utils.h"
38 #include "extensions/extensions.h"
41 /* proxy properties */
49 GSimpleAsyncResult *async_prepare_res;
51 /* TLSCertificate properties */
54 EmpTLSCertificateState state;
57 } EmpathyTLSCertificatePriv;
59 G_DEFINE_TYPE (EmpathyTLSCertificate, empathy_tls_certificate,
62 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyTLSCertificate);
65 array_of_ay_get_type (void)
69 if (G_UNLIKELY (t == 0))
71 t = dbus_g_type_get_collection ("GPtrArray",
72 dbus_g_type_get_collection ("GArray",
80 tls_certificate_got_all_cb (TpProxy *proxy,
81 GHashTable *properties,
87 EmpathyTLSCertificate *self = EMPATHY_TLS_CERTIFICATE (weak_object);
88 EmpathyTLSCertificatePriv *priv = GET_PRIV (self);
92 g_simple_async_result_set_from_error (priv->async_prepare_res, error);
93 g_simple_async_result_complete (priv->async_prepare_res);
94 tp_clear_object (&priv->async_prepare_res);
99 priv->cert_type = g_strdup (tp_asv_get_string (properties,
101 priv->state = tp_asv_get_uint32 (properties, "State", NULL);
103 cert_data = tp_asv_get_boxed (properties, "CertificateChainData",
104 array_of_ay_get_type ());
105 g_assert (cert_data != NULL);
106 priv->cert_data = g_boxed_copy (array_of_ay_get_type (), cert_data);
108 DEBUG ("Got a certificate chain long %u, of type %s",
109 priv->cert_data->len, priv->cert_type);
111 priv->is_prepared = TRUE;
113 g_simple_async_result_complete (priv->async_prepare_res);
114 tp_clear_object (&priv->async_prepare_res);
118 empathy_tls_certificate_prepare_async (EmpathyTLSCertificate *self,
119 GAsyncReadyCallback callback,
122 EmpathyTLSCertificatePriv *priv = GET_PRIV (self);
124 /* emit an error if we're already preparing the object */
125 if (priv->async_prepare_res != NULL)
127 g_simple_async_report_error_in_idle (G_OBJECT (self),
129 G_IO_ERROR, G_IO_ERROR_PENDING,
131 "Prepare operation already in progress on the TLS certificate.");
136 /* if the object is already prepared, just complete in idle */
137 if (priv->is_prepared)
139 tp_simple_async_report_success_in_idle (G_OBJECT (self),
140 callback, user_data, empathy_tls_certificate_prepare_async);
145 priv->async_prepare_res = g_simple_async_result_new (G_OBJECT (self),
146 callback, user_data, empathy_tls_certificate_prepare_async);
148 /* call GetAll() on the certificate */
149 tp_cli_dbus_properties_call_get_all (self,
150 -1, EMP_IFACE_AUTHENTICATION_TLS_CERTIFICATE,
151 tls_certificate_got_all_cb, NULL, NULL,
156 empathy_tls_certificate_prepare_finish (EmpathyTLSCertificate *self,
157 GAsyncResult *result,
160 gboolean retval = TRUE;
162 if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
170 empathy_tls_certificate_finalize (GObject *object)
172 EmpathyTLSCertificatePriv *priv = GET_PRIV (object);
174 DEBUG ("%p", object);
176 g_free (priv->cert_type);
177 tp_clear_boxed (array_of_ay_get_type (), &priv->cert_data);
179 G_OBJECT_CLASS (empathy_tls_certificate_parent_class)->finalize (object);
183 empathy_tls_certificate_get_property (GObject *object,
188 EmpathyTLSCertificatePriv *priv = GET_PRIV (object);
193 g_value_set_string (value, priv->cert_type);
196 g_value_set_boxed (value, priv->cert_data);
199 g_value_set_uint (value, priv->state);
202 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
208 empathy_tls_certificate_init (EmpathyTLSCertificate *self)
210 self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
211 EMPATHY_TYPE_TLS_CERTIFICATE, EmpathyTLSCertificatePriv);
215 empathy_tls_certificate_class_init (EmpathyTLSCertificateClass *klass)
218 GObjectClass *oclass = G_OBJECT_CLASS (klass);
219 TpProxyClass *pclass = TP_PROXY_CLASS (klass);
221 oclass->get_property = empathy_tls_certificate_get_property;
222 oclass->finalize = empathy_tls_certificate_finalize;
224 pclass->interface = EMP_IFACE_QUARK_AUTHENTICATION_TLS_CERTIFICATE;
225 pclass->must_have_unique_name = TRUE;
227 g_type_class_add_private (klass, sizeof (EmpathyTLSCertificatePriv));
229 pspec = g_param_spec_string ("cert-type", "Certificate type",
230 "The type of this certificate.",
232 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
233 g_object_class_install_property (oclass, PROP_CERT_TYPE, pspec);
235 pspec = g_param_spec_boxed ("cert-data", "Certificate chain data",
236 "The raw DER-encoded certificate chain data.",
237 array_of_ay_get_type (),
238 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
239 g_object_class_install_property (oclass, PROP_CERT_DATA, pspec);
241 pspec = g_param_spec_uint ("state", "State",
242 "The state of this certificate.",
243 EMP_TLS_CERTIFICATE_STATE_PENDING, NUM_EMP_TLS_CERTIFICATE_STATES -1,
244 EMP_TLS_CERTIFICATE_STATE_PENDING,
245 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
246 g_object_class_install_property (oclass, PROP_STATE, pspec);
250 cert_proxy_accept_cb (TpProxy *proxy,
253 GObject *weak_object)
255 GSimpleAsyncResult *accept_result = user_data;
257 DEBUG ("Callback for accept(), error %p", error);
261 DEBUG ("Error was %s", error->message);
262 g_simple_async_result_set_from_error (accept_result, error);
265 g_simple_async_result_complete (accept_result);
269 cert_proxy_reject_cb (TpProxy *proxy,
272 GObject *weak_object)
274 GSimpleAsyncResult *reject_result = user_data;
276 DEBUG ("Callback for reject(), error %p", error);
280 DEBUG ("Error was %s", error->message);
281 g_simple_async_result_set_from_error (reject_result, error);
284 g_simple_async_result_complete (reject_result);
288 reject_reason_get_dbus_error (EmpTLSCertificateRejectReason reason)
290 const gchar *retval = NULL;
294 case EMP_TLS_CERTIFICATE_REJECT_REASON_UNTRUSTED:
295 retval = tp_error_get_dbus_name (TP_ERROR_CERT_UNTRUSTED);
297 case EMP_TLS_CERTIFICATE_REJECT_REASON_EXPIRED:
298 retval = tp_error_get_dbus_name (TP_ERROR_CERT_EXPIRED);
300 case EMP_TLS_CERTIFICATE_REJECT_REASON_NOT_ACTIVATED:
301 retval = tp_error_get_dbus_name (TP_ERROR_CERT_NOT_ACTIVATED);
303 case EMP_TLS_CERTIFICATE_REJECT_REASON_FINGERPRINT_MISMATCH:
304 retval = tp_error_get_dbus_name (TP_ERROR_CERT_FINGERPRINT_MISMATCH);
306 case EMP_TLS_CERTIFICATE_REJECT_REASON_HOSTNAME_MISMATCH:
307 retval = tp_error_get_dbus_name (TP_ERROR_CERT_HOSTNAME_MISMATCH);
309 case EMP_TLS_CERTIFICATE_REJECT_REASON_SELF_SIGNED:
310 retval = tp_error_get_dbus_name (TP_ERROR_CERT_SELF_SIGNED);
312 case EMP_TLS_CERTIFICATE_REJECT_REASON_REVOKED:
313 retval = tp_error_get_dbus_name (TP_ERROR_CERT_REVOKED);
315 case EMP_TLS_CERTIFICATE_REJECT_REASON_INSECURE:
316 retval = tp_error_get_dbus_name (TP_ERROR_CERT_INSECURE);
318 case EMP_TLS_CERTIFICATE_REJECT_REASON_LIMIT_EXCEEDED:
319 retval = tp_error_get_dbus_name (TP_ERROR_CERT_LIMIT_EXCEEDED);
321 case EMP_TLS_CERTIFICATE_REJECT_REASON_UNKNOWN:
323 retval = tp_error_get_dbus_name (TP_ERROR_CERT_INVALID);
330 EmpathyTLSCertificate *
331 empathy_tls_certificate_new (TpDBusDaemon *dbus,
332 const gchar *bus_name,
333 const gchar *object_path,
336 EmpathyTLSCertificate *retval = NULL;
338 if (!tp_dbus_check_valid_bus_name (bus_name,
339 TP_DBUS_NAME_TYPE_UNIQUE, error))
342 if (!tp_dbus_check_valid_object_path (object_path, error))
345 retval = g_object_new (EMPATHY_TYPE_TLS_CERTIFICATE,
347 "bus-name", bus_name,
348 "object-path", object_path,
353 DEBUG ("Error while creating the TLS certificate: %s",
360 empathy_tls_certificate_accept_async (EmpathyTLSCertificate *self,
361 GAsyncReadyCallback callback,
364 GSimpleAsyncResult *accept_result;
366 g_assert (EMPATHY_IS_TLS_CERTIFICATE (self));
368 DEBUG ("Accepting TLS certificate");
370 accept_result = g_simple_async_result_new (G_OBJECT (self),
371 callback, user_data, empathy_tls_certificate_accept_async);
373 emp_cli_authentication_tls_certificate_call_accept (TP_PROXY (self),
374 -1, cert_proxy_accept_cb,
375 accept_result, g_object_unref,
380 empathy_tls_certificate_accept_finish (EmpathyTLSCertificate *self,
381 GAsyncResult *result,
384 if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
392 empathy_tls_certificate_reject_async (EmpathyTLSCertificate *self,
393 EmpTLSCertificateRejectReason reason,
395 GAsyncReadyCallback callback,
398 const gchar *dbus_error;
399 GSimpleAsyncResult *reject_result;
401 g_assert (EMPATHY_IS_TLS_CERTIFICATE (self));
403 DEBUG ("Rejecting TLS certificate with reason %u", reason);
405 dbus_error = reject_reason_get_dbus_error (reason);
406 reject_result = g_simple_async_result_new (G_OBJECT (self),
407 callback, user_data, empathy_tls_certificate_reject_async);
409 emp_cli_authentication_tls_certificate_call_reject (TP_PROXY (self),
410 -1, reason, dbus_error, details, cert_proxy_reject_cb,
411 reject_result, g_object_unref, G_OBJECT (self));
415 empathy_tls_certificate_reject_finish (EmpathyTLSCertificate *self,
416 GAsyncResult *result,
419 if (g_simple_async_result_propagate_error (G_SIMPLE_ASYNC_RESULT (result),
427 get_exported_size (gnutls_x509_crt_t cert)
430 guchar fake[2] = { 0, 0 };
432 /* fake an export so we get the size to allocate */
433 gnutls_x509_crt_export (cert, GNUTLS_X509_FMT_PEM,
436 DEBUG ("Should allocate %lu bytes", (gulong) retval);
442 empathy_tls_certificate_store_ca (EmpathyTLSCertificate *self)
445 gnutls_x509_crt_t cert;
446 gnutls_datum_t datum = { NULL, 0 };
448 guchar *exported_cert = NULL;
450 gchar *user_certs_dir = NULL, *filename = NULL, *path = NULL;
451 gchar *hostname = NULL;
452 GError *error = NULL;
453 EmpathyTLSCertificatePriv *priv = GET_PRIV (self);
455 last_cert = g_ptr_array_index (priv->cert_data, priv->cert_data->len - 1);
456 datum.data = (guchar *) last_cert->data;
457 datum.size = last_cert->len;
459 gnutls_x509_crt_init (&cert);
460 gnutls_x509_crt_import (cert, &datum, GNUTLS_X509_FMT_DER);
462 /* make sure it's self-signed, otherwise it's not a CA */
463 if (gnutls_x509_crt_check_issuer (cert, cert) <= 0)
465 DEBUG ("Can't import the CA, as it's not self-signed");
466 gnutls_x509_crt_deinit (cert);
471 if (gnutls_x509_crt_get_ca_status (cert, NULL) <= 0)
473 DEBUG ("Can't import the CA, it's not a valid CA certificate");
474 gnutls_x509_crt_deinit (cert);
479 exported_len = get_exported_size (cert);
480 exported_cert = g_malloc (sizeof (guchar) * exported_len);
482 res = gnutls_x509_crt_export (cert, GNUTLS_X509_FMT_PEM,
483 exported_cert, &exported_len);
487 DEBUG ("Failed to export the CA certificate; GnuTLS returned %d,"
488 "and should be %lu bytes long", res, (gulong) exported_len);
489 gnutls_x509_crt_deinit (cert);
494 hostname = empathy_get_x509_certificate_hostname (cert);
496 if (hostname == NULL)
497 hostname = g_strdup ("ca");
499 gnutls_x509_crt_deinit (cert);
502 user_certs_dir = g_build_filename (g_get_user_config_dir (),
503 "telepathy", "certs", NULL);
505 res = g_mkdir_with_parents (user_certs_dir, S_IRWXU | S_IRWXG);
509 DEBUG ("Failed to create the user certificate directory: %s",
522 filename = g_strdup_printf ("cert-%s", hostname);
524 filename = g_strdup_printf ("cert-%s-%d", hostname, offset);
526 path = g_build_filename (user_certs_dir, filename, NULL);
531 while (g_file_test (path, G_FILE_TEST_EXISTS));
533 DEBUG ("Will save to %s", path);
535 g_file_set_contents (path, (const gchar *) exported_cert, exported_len,
540 DEBUG ("Can't save the CA certificate to %s: %s",
541 path, error->message);
543 g_error_free (error);
548 g_free (exported_cert);
549 g_free (user_certs_dir);