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0d268c4825
Nicks and blurbs don't have any practical use for gio/gobject libraries. Leaving tests untouched since this features is still used by other libraries. Closes #2991
284 lines
10 KiB
C
284 lines
10 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright © 2010 Red Hat, Inc
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* Copyright © 2015 Collabora, Ltd.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "glib.h"
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#include "gdtlsclientconnection.h"
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#include "ginitable.h"
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#include "gioenumtypes.h"
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#include "gsocket.h"
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#include "gsocketconnectable.h"
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#include "gtlsbackend.h"
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#include "gtlscertificate.h"
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#include "glibintl.h"
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/**
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* GDtlsClientConnection:
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*
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* `GDtlsClientConnection` is the client-side subclass of
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* [iface@Gio.DtlsConnection], representing a client-side DTLS connection.
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*
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* Since: 2.48
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*/
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G_DEFINE_INTERFACE (GDtlsClientConnection, g_dtls_client_connection,
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G_TYPE_DTLS_CONNECTION)
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static void
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g_dtls_client_connection_default_init (GDtlsClientConnectionInterface *iface)
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{
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/**
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* GDtlsClientConnection:validation-flags:
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*
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* What steps to perform when validating a certificate received from
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* a server. Server certificates that fail to validate in any of the
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* ways indicated here will be rejected unless the application
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* overrides the default via #GDtlsConnection::accept-certificate.
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*
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* GLib guarantees that if certificate verification fails, at least one
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* flag will be set, but it does not guarantee that all possible flags
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* will be set. Accordingly, you may not safely decide to ignore any
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* particular type of error. For example, it would be incorrect to mask
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* %G_TLS_CERTIFICATE_EXPIRED if you want to allow expired certificates,
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* because this could potentially be the only error flag set even if
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* other problems exist with the certificate. Therefore, there is no
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* safe way to use this property. This is not a horrible problem,
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* though, because you should not be attempting to ignore validation
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* errors anyway. If you really must ignore TLS certificate errors,
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* connect to #GDtlsConnection::accept-certificate.
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*
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* Since: 2.48
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*
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* Deprecated: 2.74: Do not attempt to ignore validation errors.
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*/
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g_object_interface_install_property (iface,
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g_param_spec_flags ("validation-flags", NULL, NULL,
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G_TYPE_TLS_CERTIFICATE_FLAGS,
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G_TLS_CERTIFICATE_VALIDATE_ALL,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT |
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G_PARAM_STATIC_STRINGS));
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/**
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* GDtlsClientConnection:server-identity:
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*
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* A #GSocketConnectable describing the identity of the server that
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* is expected on the other end of the connection.
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*
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* If the %G_TLS_CERTIFICATE_BAD_IDENTITY flag is set in
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* #GDtlsClientConnection:validation-flags, this object will be used
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* to determine the expected identify of the remote end of the
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* connection; if #GDtlsClientConnection:server-identity is not set,
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* or does not match the identity presented by the server, then the
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* %G_TLS_CERTIFICATE_BAD_IDENTITY validation will fail.
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*
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* In addition to its use in verifying the server certificate,
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* this is also used to give a hint to the server about what
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* certificate we expect, which is useful for servers that serve
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* virtual hosts.
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*
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* Since: 2.48
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*/
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g_object_interface_install_property (iface,
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g_param_spec_object ("server-identity", NULL, NULL,
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G_TYPE_SOCKET_CONNECTABLE,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT |
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G_PARAM_STATIC_STRINGS));
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/**
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* GDtlsClientConnection:accepted-cas: (type GLib.List) (element-type GLib.ByteArray)
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*
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* A list of the distinguished names of the Certificate Authorities
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* that the server will accept client certificates signed by. If the
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* server requests a client certificate during the handshake, then
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* this property will be set after the handshake completes.
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*
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* Each item in the list is a #GByteArray which contains the complete
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* subject DN of the certificate authority.
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*
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* Since: 2.48
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*/
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g_object_interface_install_property (iface,
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g_param_spec_pointer ("accepted-cas", NULL, NULL,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS));
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}
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/**
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* g_dtls_client_connection_new:
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* @base_socket: the #GDatagramBased to wrap
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* @server_identity: (nullable): the expected identity of the server
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* @error: #GError for error reporting, or %NULL to ignore.
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*
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* Creates a new #GDtlsClientConnection wrapping @base_socket which is
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* assumed to communicate with the server identified by @server_identity.
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*
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* Returns: (transfer full) (type GDtlsClientConnection): the new
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* #GDtlsClientConnection, or %NULL on error
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*
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* Since: 2.48
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*/
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GDatagramBased *
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g_dtls_client_connection_new (GDatagramBased *base_socket,
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GSocketConnectable *server_identity,
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GError **error)
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{
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GObject *conn;
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GTlsBackend *backend;
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backend = g_tls_backend_get_default ();
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conn = g_initable_new (g_tls_backend_get_dtls_client_connection_type (backend),
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NULL, error,
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"base-socket", base_socket,
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"server-identity", server_identity,
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NULL);
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return G_DATAGRAM_BASED (conn);
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}
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/**
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* g_dtls_client_connection_get_validation_flags:
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* @conn: the #GDtlsClientConnection
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*
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* Gets @conn's validation flags
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*
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* This function does not work as originally designed and is impossible
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* to use correctly. See #GDtlsClientConnection:validation-flags for more
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* information.
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*
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* Returns: the validation flags
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*
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* Since: 2.48
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*
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* Deprecated: 2.74: Do not attempt to ignore validation errors.
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*/
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GTlsCertificateFlags
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g_dtls_client_connection_get_validation_flags (GDtlsClientConnection *conn)
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{
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GTlsCertificateFlags flags = G_TLS_CERTIFICATE_NO_FLAGS;
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g_return_val_if_fail (G_IS_DTLS_CLIENT_CONNECTION (conn), 0);
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g_object_get (G_OBJECT (conn), "validation-flags", &flags, NULL);
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return flags;
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}
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/**
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* g_dtls_client_connection_set_validation_flags:
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* @conn: the #GDtlsClientConnection
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* @flags: the #GTlsCertificateFlags to use
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*
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* Sets @conn's validation flags, to override the default set of
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* checks performed when validating a server certificate. By default,
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* %G_TLS_CERTIFICATE_VALIDATE_ALL is used.
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*
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* This function does not work as originally designed and is impossible
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* to use correctly. See #GDtlsClientConnection:validation-flags for more
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* information.
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*
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* Since: 2.48
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*
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* Deprecated: 2.74: Do not attempt to ignore validation errors.
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*/
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void
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g_dtls_client_connection_set_validation_flags (GDtlsClientConnection *conn,
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GTlsCertificateFlags flags)
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{
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g_return_if_fail (G_IS_DTLS_CLIENT_CONNECTION (conn));
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g_object_set (G_OBJECT (conn), "validation-flags", flags, NULL);
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}
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/**
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* g_dtls_client_connection_get_server_identity:
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* @conn: the #GDtlsClientConnection
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*
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* Gets @conn's expected server identity
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*
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* Returns: (transfer none): a #GSocketConnectable describing the
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* expected server identity, or %NULL if the expected identity is not
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* known.
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*
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* Since: 2.48
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*/
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GSocketConnectable *
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g_dtls_client_connection_get_server_identity (GDtlsClientConnection *conn)
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{
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GSocketConnectable *identity = NULL;
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g_return_val_if_fail (G_IS_DTLS_CLIENT_CONNECTION (conn), 0);
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g_object_get (G_OBJECT (conn), "server-identity", &identity, NULL);
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if (identity)
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g_object_unref (identity);
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return identity;
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}
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/**
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* g_dtls_client_connection_set_server_identity:
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* @conn: the #GDtlsClientConnection
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* @identity: a #GSocketConnectable describing the expected server identity
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*
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* Sets @conn's expected server identity, which is used both to tell
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* servers on virtual hosts which certificate to present, and also
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* to let @conn know what name to look for in the certificate when
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* performing %G_TLS_CERTIFICATE_BAD_IDENTITY validation, if enabled.
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*
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* Since: 2.48
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*/
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void
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g_dtls_client_connection_set_server_identity (GDtlsClientConnection *conn,
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GSocketConnectable *identity)
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{
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g_return_if_fail (G_IS_DTLS_CLIENT_CONNECTION (conn));
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g_object_set (G_OBJECT (conn), "server-identity", identity, NULL);
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}
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/**
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* g_dtls_client_connection_get_accepted_cas:
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* @conn: the #GDtlsClientConnection
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*
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* Gets the list of distinguished names of the Certificate Authorities
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* that the server will accept certificates from. This will be set
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* during the TLS handshake if the server requests a certificate.
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* Otherwise, it will be %NULL.
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*
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* Each item in the list is a #GByteArray which contains the complete
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* subject DN of the certificate authority.
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*
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* Returns: (element-type GByteArray) (transfer full): the list of
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* CA DNs. You should unref each element with g_byte_array_unref() and then
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* the free the list with g_list_free().
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*
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* Since: 2.48
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*/
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GList *
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g_dtls_client_connection_get_accepted_cas (GDtlsClientConnection *conn)
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{
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GList *accepted_cas = NULL;
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g_return_val_if_fail (G_IS_DTLS_CLIENT_CONNECTION (conn), NULL);
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g_object_get (G_OBJECT (conn), "accepted-cas", &accepted_cas, NULL);
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return accepted_cas;
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}
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