1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright © 2010 Red Hat, Inc
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
24 #include "gtlsclientconnection.h"
25 #include "ginitable.h"
26 #include "gioenumtypes.h"
28 #include "gsocketconnectable.h"
29 #include "gtlsbackend.h"
30 #include "gtlscertificate.h"
34 * SECTION:gtlsclientconnection
35 * @short_description: TLS client-side connection
38 * #GTlsClientConnection is the client-side subclass of
39 * #GTlsConnection, representing a client-side TLS connection.
43 * GTlsClientConnection:
45 * Abstract base class for the backend-specific client connection
51 G_DEFINE_INTERFACE (GTlsClientConnection, g_tls_client_connection, G_TYPE_TLS_CONNECTION)
54 g_tls_client_connection_default_init (GTlsClientConnectionInterface *iface)
57 * GTlsClientConnection:validation-flags:
59 * What steps to perform when validating a certificate received from
60 * a server. Server certificates that fail to validate in all of the
61 * ways indicated here will be rejected unless the application
62 * overrides the default via #GTlsConnection::accept-certificate.
66 g_object_interface_install_property (iface,
67 g_param_spec_flags ("validation-flags",
68 P_("Validation flags"),
69 P_("What certificate validation to perform"),
70 G_TYPE_TLS_CERTIFICATE_FLAGS,
71 G_TLS_CERTIFICATE_VALIDATE_ALL,
74 G_PARAM_STATIC_STRINGS));
77 * GTlsClientConnection:server-identity:
79 * A #GSocketConnectable describing the identity of the server that
80 * is expected on the other end of the connection.
82 * If the %G_TLS_CERTIFICATE_BAD_IDENTITY flag is set in
83 * #GTlsClientConnection:validation-flags, this object will be used
84 * to determine the expected identify of the remote end of the
85 * connection; if #GTlsClientConnection:server-identity is not set,
86 * or does not match the identity presented by the server, then the
87 * %G_TLS_CERTIFICATE_BAD_IDENTITY validation will fail.
89 * In addition to its use in verifying the server certificate,
90 * this is also used to give a hint to the server about what
91 * certificate we expect, which is useful for servers that serve
96 g_object_interface_install_property (iface,
97 g_param_spec_object ("server-identity",
98 P_("Server identity"),
99 P_("GSocketConnectable identifying the server"),
100 G_TYPE_SOCKET_CONNECTABLE,
103 G_PARAM_STATIC_STRINGS));
106 * GTlsClientConnection:use-ssl3:
108 * If %TRUE, tells the connection to use SSL 3.0 rather than trying
109 * to negotiate the best version of TLS or SSL to use. This can be
110 * used when talking to servers that don't implement version
111 * negotiation correctly and therefore refuse to handshake at all with
112 * a "modern" TLS handshake.
116 g_object_interface_install_property (iface,
117 g_param_spec_boolean ("use-ssl3",
119 P_("Use SSL 3.0 rather than trying to use TLS 1.x"),
123 G_PARAM_STATIC_STRINGS));
126 * GTlsClientConnection:accepted-cas:
128 * A list of the distinguished names of the Certificate Authorities
129 * that the server will accept client certificates signed by. If the
130 * server requests a client certificate during the handshake, then
131 * this property will be set after the handshake completes.
133 * Each item in the list is a #GByteArray which contains the complete
134 * subject DN of the certificate authority.
138 g_object_interface_install_property (iface,
139 g_param_spec_pointer ("accepted-cas",
141 P_("Distinguished names of the CAs the server accepts certificates from"),
143 G_PARAM_STATIC_STRINGS));
147 * g_tls_client_connection_new:
148 * @base_io_stream: the #GIOStream to wrap
149 * @server_identity: (allow-none): the expected identity of the server
150 * @error: #GError for error reporting, or %NULL to ignore.
152 * Creates a new #GTlsClientConnection wrapping @base_io_stream (which
153 * must have pollable input and output streams) which is assumed to
154 * communicate with the server identified by @server_identity.
156 * Return value: (transfer full): the new #GTlsClientConnection, or %NULL on error
161 g_tls_client_connection_new (GIOStream *base_io_stream,
162 GSocketConnectable *server_identity,
166 GTlsBackend *backend;
168 backend = g_tls_backend_get_default ();
169 conn = g_initable_new (g_tls_backend_get_client_connection_type (backend),
171 "base-io-stream", base_io_stream,
172 "server-identity", server_identity,
174 return G_IO_STREAM (conn);
178 * g_tls_client_connection_get_validation_flags:
179 * @conn: the #GTlsClientConnection
181 * Gets @conn's validation flags
183 * Return value: the validation flags
188 g_tls_client_connection_get_validation_flags (GTlsClientConnection *conn)
190 GTlsCertificateFlags flags = 0;
192 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
194 g_object_get (G_OBJECT (conn), "validation-flags", &flags, NULL);
199 * g_tls_client_connection_set_validation_flags:
200 * @conn: the #GTlsClientConnection
201 * @flags: the #GTlsCertificateFlags to use
203 * Sets @conn's validation flags, to override the default set of
204 * checks performed when validating a server certificate. By default,
205 * %G_TLS_CERTIFICATE_VALIDATE_ALL is used.
210 g_tls_client_connection_set_validation_flags (GTlsClientConnection *conn,
211 GTlsCertificateFlags flags)
213 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
215 g_object_set (G_OBJECT (conn), "validation-flags", flags, NULL);
219 * g_tls_client_connection_get_server_identity:
220 * @conn: the #GTlsClientConnection
222 * Gets @conn's expected server identity
224 * Return value: (transfer none): a #GSocketConnectable describing the
225 * expected server identity, or %NULL if the expected identity is not
231 g_tls_client_connection_get_server_identity (GTlsClientConnection *conn)
233 GSocketConnectable *identity = NULL;
235 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
237 g_object_get (G_OBJECT (conn), "server-identity", &identity, NULL);
239 g_object_unref (identity);
244 * g_tls_client_connection_set_server_identity:
245 * @conn: the #GTlsClientConnection
246 * @identity: a #GSocketConnectable describing the expected server identity
248 * Sets @conn's expected server identity, which is used both to tell
249 * servers on virtual hosts which certificate to present, and also
250 * to let @conn know what name to look for in the certificate when
251 * performing %G_TLS_CERTIFICATE_BAD_IDENTITY validation, if enabled.
256 g_tls_client_connection_set_server_identity (GTlsClientConnection *conn,
257 GSocketConnectable *identity)
259 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
261 g_object_set (G_OBJECT (conn), "server-identity", identity, NULL);
265 * g_tls_client_connection_get_use_ssl3:
266 * @conn: the #GTlsClientConnection
268 * Gets whether @conn will use SSL 3.0 rather than the
269 * highest-supported version of TLS; see
270 * g_tls_client_connection_set_use_ssl3().
272 * Return value: whether @conn will use SSL 3.0
277 g_tls_client_connection_get_use_ssl3 (GTlsClientConnection *conn)
279 gboolean use_ssl3 = FALSE;
281 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
283 g_object_get (G_OBJECT (conn), "use-ssl3", &use_ssl3, NULL);
288 * g_tls_client_connection_set_use_ssl3:
289 * @conn: the #GTlsClientConnection
290 * @use_ssl3: whether to use SSL 3.0
292 * If @use_ssl3 is %TRUE, this forces @conn to use SSL 3.0 rather than
293 * trying to properly negotiate the right version of TLS or SSL to use.
294 * This can be used when talking to servers that do not implement the
295 * fallbacks correctly and which will therefore fail to handshake with
296 * a "modern" TLS handshake attempt.
301 g_tls_client_connection_set_use_ssl3 (GTlsClientConnection *conn,
304 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
306 g_object_set (G_OBJECT (conn), "use-ssl3", use_ssl3, NULL);
310 * g_tls_client_connection_get_accepted_cas:
311 * @conn: the #GTlsClientConnection
313 * Gets the list of distinguished names of the Certificate Authorities
314 * that the server will accept certificates from. This will be set
315 * during the TLS handshake if the server requests a certificate.
316 * Otherwise, it will be %NULL.
318 * Each item in the list is a #GByteArray which contains the complete
319 * subject DN of the certificate authority.
321 * Return value: (element-type GByteArray) (transfer full): the list of
322 * CA DNs. You should unref each element with g_byte_array_unref() and then
323 * the free the list with g_list_free().
328 g_tls_client_connection_get_accepted_cas (GTlsClientConnection *conn)
330 GList *accepted_cas = NULL;
332 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), NULL);
334 g_object_get (G_OBJECT (conn), "accepted-cas", &accepted_cas, NULL);