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"
27 #include "gio-marshal.h"
29 #include "gsocketconnectable.h"
30 #include "gtlsbackend.h"
31 #include "gtlscertificate.h"
35 * SECTION:gtlsclientconnection
36 * @short_description: TLS client-side connection
39 * #GTlsClientConnection is the client-side subclass of
40 * #GTlsConnection, representing a client-side TLS connection.
46 * GTlsClientConnection:
48 * Abstract base class for the backend-specific client connection
54 G_DEFINE_INTERFACE (GTlsClientConnection, g_tls_client_connection, G_TYPE_TLS_CONNECTION)
57 g_tls_client_connection_default_init (GTlsClientConnectionInterface *iface)
60 * GTlsClientConnection:validation-flags:
62 * What steps to perform when validating a certificate received from
63 * a server. Server certificates that fail to validate in all of the
64 * ways indicated here will be rejected unless the application
65 * overrides the default via #GTlsConnection::accept-certificate.
69 g_object_interface_install_property (iface,
70 g_param_spec_flags ("validation-flags",
71 P_("Validation flags"),
72 P_("What certificate validation to perform"),
73 G_TYPE_TLS_CERTIFICATE_FLAGS,
74 G_TLS_CERTIFICATE_VALIDATE_ALL,
77 G_PARAM_STATIC_STRINGS));
80 * GTlsClientConnection:server-identity:
82 * A #GSocketConnectable describing the identity of the server that
83 * is expected on the other end of the connection.
85 * If the %G_TLS_CERTIFICATE_BAD_IDENTITY flag is set in
86 * #GTlsClientConnection:validation-flags, this object will be used
87 * to determine the expected identify of the remote end of the
88 * connection; if #GTlsClientConnection:server-identity is not set,
89 * or does not match the identity presented by the server, then the
90 * %G_TLS_CERTIFICATE_BAD_IDENTITY validation will fail.
92 * In addition to its use in verifying the server certificate,
93 * this is also used to give a hint to the server about what
94 * certificate we expect, which is useful for servers that serve
99 g_object_interface_install_property (iface,
100 g_param_spec_object ("server-identity",
101 P_("Server identity"),
102 P_("GSocketConnectable identifying the server"),
103 G_TYPE_SOCKET_CONNECTABLE,
106 G_PARAM_STATIC_STRINGS));
109 * GTlsClientConnection:use-ssl3:
111 * If %TRUE, tells the connection to use SSL 3.0 rather than trying
112 * to negotiate the best version of TLS or SSL to use. This can be
113 * used when talking to servers that don't implement version
114 * negotiation correctly and therefore refuse to handshake at all with
115 * a "modern" TLS handshake.
119 g_object_interface_install_property (iface,
120 g_param_spec_boolean ("use-ssl3",
122 P_("Use SSL 3.0 rather than trying to use TLS 1.x"),
126 G_PARAM_STATIC_STRINGS));
129 * GTlsClientConnection:accepted-cas:
131 * A list of the distinguished names of the Certificate Authorities
132 * that the server will accept client certificates signed by. If the
133 * server requests a client certificate during the handshake, then
134 * this property will be set by the time the
135 * #GTlsConnection::need-certificate signal is emitted.
139 g_object_interface_install_property (iface,
140 g_param_spec_boxed ("accepted-cas",
142 P_("Distinguished names of the CAs the server accepts certificates from"),
145 G_PARAM_STATIC_STRINGS));
149 * g_tls_client_connection_new:
150 * @base_io_stream: the #GIOStream to wrap
151 * @server_identity: (allow-none): the expected identity of the server
152 * @error: #GError for error reporting, or %NULL to ignore.
154 * Creates a new #GTlsClientConnection wrapping @base_io_stream (which
155 * must have pollable input and output streams) which is assumed to
156 * communicate with the server identified by @server_identity.
158 * Return value: the new #GTlsClientConnection, or %NULL on error
162 GTlsClientConnection *
163 g_tls_client_connection_new (GIOStream *base_io_stream,
164 GSocketConnectable *server_identity,
168 GTlsBackend *backend;
170 backend = g_tls_backend_get_default ();
171 conn = g_initable_new (g_tls_backend_get_client_connection_type (backend),
173 "base-io-stream", base_io_stream,
174 "server-identity", server_identity,
176 return G_TLS_CLIENT_CONNECTION (conn);
180 * g_tls_client_connection_get_validation_flags:
181 * @conn: the #GTlsClientConnection
183 * Gets @conn's validation flags
185 * Return value: the validation flags
190 g_tls_client_connection_get_validation_flags (GTlsClientConnection *conn)
192 GTlsCertificateFlags flags = 0;
194 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
196 g_object_get (G_OBJECT (conn), "validation-flags", &flags, NULL);
201 * g_tls_client_connection_set_validation_flags:
202 * @conn: the #GTlsClientConnection
203 * @flags: the #GTlsCertificatelags to use
205 * Sets @conn's validation flags, to override the default set of
206 * checks performed when validating a server certificate.
211 g_tls_client_connection_set_validation_flags (GTlsClientConnection *conn,
212 GTlsCertificateFlags flags)
214 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
216 g_object_set (G_OBJECT (conn), "validation-flags", flags, NULL);
220 * g_tls_client_connection_get_server_identity:
221 * @conn: the #GTlsClientConnection
223 * Gets @conn's expected server identity
225 * Return value: a #GSocketConnectable describing the
226 * expected server identity, or %NULL if the expected identity is not
232 g_tls_client_connection_get_server_identity (GTlsClientConnection *conn)
234 GSocketConnectable *identity = NULL;
236 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
238 g_object_get (G_OBJECT (conn), "server-identity", &identity, NULL);
240 g_object_unref (identity);
245 * g_tls_client_connection_set_server_identity:
246 * @conn: the #GTlsClientConnection
247 * @identity: a #GSocketConnectable describing the expected server identity
249 * Sets @conn's expected server identity, which is used both to tell
250 * servers on virtual hosts which certificate to present, and also
251 * to let @conn know what name to look for in the certificate when
252 * performing %G_TLS_CERTIFICATE_BAD_IDENTITY validation, if enabled.
257 g_tls_client_connection_set_server_identity (GTlsClientConnection *conn,
258 GSocketConnectable *identity)
260 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
262 g_object_set (G_OBJECT (conn), "server-identity", identity, NULL);
266 * g_tls_client_connection_get_use_ssl3:
267 * @conn: the #GTlsClientConnection
269 * Gets whether @conn will use SSL 3.0 rather than the
270 * highest-supported version of TLS; see
271 * g_tls_client_connection_set_use_ssl3().
273 * Return value: whether @conn will use SSL 3.0
278 g_tls_client_connection_get_use_ssl3 (GTlsClientConnection *conn)
280 gboolean use_ssl3 = FALSE;
282 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), 0);
284 g_object_get (G_OBJECT (conn), "use-ssl3", &use_ssl3, NULL);
289 * g_tls_client_connection_set_use_ssl3:
290 * @conn: the #GTlsClientConnection
291 * @use_ssl3: whether to use SSL 3.0
293 * If @use_ssl3 is %TRUE, this forces @conn to use SSL 3.0 rather than
294 * trying to properly negotiate the right version of TLS or SSL to use.
295 * This can be used when talking to servers that do not implement the
296 * fallbacks correctly and which will therefore fail to handshake with
297 * a "modern" TLS handshake attempt.
302 g_tls_client_connection_set_use_ssl3 (GTlsClientConnection *conn,
305 g_return_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn));
307 g_object_set (G_OBJECT (conn), "use-ssl3", use_ssl3, NULL);
311 * g_tls_client_connection_get_accepted_cas:
312 * @conn: the #GTlsClientConnection
314 * Gets the list of distinguished names of the Certificate Authorities
315 * that the server will accept certificates from. This will be set
316 * during the TLS handshake if the server requests a certificate.
317 * Otherwise, it will be %NULL.
319 * Return value: (transfer full) (array zero-terminated=1): the list
320 * of CA names, which you must free (eg, with g_strfreev()).
325 g_tls_client_connection_get_accepted_cas (GTlsClientConnection *conn)
327 char **accepted_cas = NULL;
329 g_return_val_if_fail (G_IS_TLS_CLIENT_CONNECTION (conn), NULL);
331 g_object_get (G_OBJECT (conn), "accepted-cas", &accepted_cas, NULL);