glib/gio/gtlsconnection.c
Philip Withnall 7feeafd9db gio: Fix docs links to description of I/O priority
There are a lot of links to the description of I/O priority in the GIO
docs, and they’re all currently broken since the docs build was ported
to gi-docgen.

Use a simple find and replace (see below) to fix them. This doesn’t port
any of the surrounding docs to gi-docgen format, but should still
improve things overall.
```sh
git search-replace --fix '\[I/O priority\]\[io-priority\]///[I/O priority](iface.AsyncResult.html#io-priority)'
```

Signed-off-by: Philip Withnall <pwithnall@gnome.org>

Helps: #3250
2024-03-22 00:53:05 +00:00

1130 lines
38 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* GIO - GLib Input, Output and Streaming Library
*
* Copyright © 2010 Red Hat, Inc
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "glib.h"
#include "gtlsconnection.h"
#include "gcancellable.h"
#include "gioenumtypes.h"
#include "gsocket.h"
#include "gtlsbackend.h"
#include "gtlscertificate.h"
#include "gtlsclientconnection.h"
#include "gtlsdatabase.h"
#include "gtlsinteraction.h"
#include "glibintl.h"
#include "gmarshal-internal.h"
/**
* GTlsConnection:
*
* `GTlsConnection` is the base TLS connection class type, which wraps
* a [class@Gio.IOStream] and provides TLS encryption on top of it. Its
* subclasses, [iface@Gio.TlsClientConnection] and
* [iface@Gio.TlsServerConnection], implement client-side and server-side TLS,
* respectively.
*
* For DTLS (Datagram TLS) support, see [iface@Gio.DtlsConnection].
*
* Since: 2.28
*/
G_DEFINE_ABSTRACT_TYPE (GTlsConnection, g_tls_connection, G_TYPE_IO_STREAM)
static void g_tls_connection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void g_tls_connection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
enum {
ACCEPT_CERTIFICATE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
enum {
PROP_0,
PROP_BASE_IO_STREAM,
PROP_REQUIRE_CLOSE_NOTIFY,
PROP_REHANDSHAKE_MODE,
PROP_USE_SYSTEM_CERTDB,
PROP_DATABASE,
PROP_INTERACTION,
PROP_CERTIFICATE,
PROP_PEER_CERTIFICATE,
PROP_PEER_CERTIFICATE_ERRORS,
PROP_ADVERTISED_PROTOCOLS,
PROP_NEGOTIATED_PROTOCOL,
PROP_PROTOCOL_VERSION,
PROP_CIPHERSUITE_NAME,
};
static void
g_tls_connection_class_init (GTlsConnectionClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = g_tls_connection_get_property;
gobject_class->set_property = g_tls_connection_set_property;
/**
* GTlsConnection:base-io-stream:
*
* The #GIOStream that the connection wraps. The connection holds a reference
* to this stream, and may run operations on the stream from other threads
* throughout its lifetime. Consequently, after the #GIOStream has been
* constructed, application code may only run its own operations on this
* stream when no #GIOStream operations are running.
*
* Since: 2.28
*/
g_object_class_install_property (gobject_class, PROP_BASE_IO_STREAM,
g_param_spec_object ("base-io-stream", NULL, NULL,
G_TYPE_IO_STREAM,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:use-system-certdb:
*
* Whether or not the system certificate database will be used to
* verify peer certificates. See
* g_tls_connection_set_use_system_certdb().
*
* Deprecated: 2.30: Use GTlsConnection:database instead
*/
g_object_class_install_property (gobject_class, PROP_USE_SYSTEM_CERTDB,
g_param_spec_boolean ("use-system-certdb", NULL, NULL,
TRUE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS |
G_PARAM_DEPRECATED));
/**
* GTlsConnection:database: (nullable)
*
* The certificate database to use when verifying this TLS connection.
* If no certificate database is set, then the default database will be
* used. See g_tls_backend_get_default_database().
*
* When using a non-default database, #GTlsConnection must fall back to using
* the #GTlsDatabase to perform certificate verification using
* g_tls_database_verify_chain(), which means certificate verification will
* not be able to make use of TLS session context. This may be less secure.
* For example, if you create your own #GTlsDatabase that just wraps the
* default #GTlsDatabase, you might expect that you have not changed anything,
* but this is not true because you may have altered the behavior of
* #GTlsConnection by causing it to use g_tls_database_verify_chain(). See the
* documentation of g_tls_database_verify_chain() for more details on specific
* security checks that may not be performed. Accordingly, setting a
* non-default database is discouraged except for specialty applications with
* unusual security requirements.
*
* Since: 2.30
*/
g_object_class_install_property (gobject_class, PROP_DATABASE,
g_param_spec_object ("database", NULL, NULL,
G_TYPE_TLS_DATABASE,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:interaction: (nullable)
*
* A #GTlsInteraction object to be used when the connection or certificate
* database need to interact with the user. This will be used to prompt the
* user for passwords where necessary.
*
* Since: 2.30
*/
g_object_class_install_property (gobject_class, PROP_INTERACTION,
g_param_spec_object ("interaction", NULL, NULL,
G_TYPE_TLS_INTERACTION,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:require-close-notify:
*
* Whether or not proper TLS close notification is required.
* See g_tls_connection_set_require_close_notify().
*
* Since: 2.28
*/
g_object_class_install_property (gobject_class, PROP_REQUIRE_CLOSE_NOTIFY,
g_param_spec_boolean ("require-close-notify", NULL, NULL,
TRUE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:rehandshake-mode:
*
* The rehandshaking mode. See
* g_tls_connection_set_rehandshake_mode().
*
* Since: 2.28
*
* Deprecated: 2.60: The rehandshake mode is ignored.
*/
g_object_class_install_property (gobject_class, PROP_REHANDSHAKE_MODE,
g_param_spec_enum ("rehandshake-mode", NULL, NULL,
G_TYPE_TLS_REHANDSHAKE_MODE,
G_TLS_REHANDSHAKE_SAFELY,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS |
G_PARAM_DEPRECATED));
/**
* GTlsConnection:certificate:
*
* The connection's certificate; see
* g_tls_connection_set_certificate().
*
* Since: 2.28
*/
g_object_class_install_property (gobject_class, PROP_CERTIFICATE,
g_param_spec_object ("certificate", NULL, NULL,
G_TYPE_TLS_CERTIFICATE,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:peer-certificate: (nullable)
*
* The connection's peer's certificate, after the TLS handshake has
* completed or failed. Note in particular that this is not yet set
* during the emission of #GTlsConnection::accept-certificate.
*
* (You can watch for a #GObject::notify signal on this property to
* detect when a handshake has occurred.)
*
* Since: 2.28
*/
g_object_class_install_property (gobject_class, PROP_PEER_CERTIFICATE,
g_param_spec_object ("peer-certificate", NULL, NULL,
G_TYPE_TLS_CERTIFICATE,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:peer-certificate-errors:
*
* The errors noticed while verifying
* #GTlsConnection:peer-certificate. Normally this should be 0, but
* it may not be if #GTlsClientConnection:validation-flags is not
* %G_TLS_CERTIFICATE_VALIDATE_ALL, or if
* #GTlsConnection::accept-certificate overrode the default
* behavior.
*
* GLib guarantees that if certificate verification fails, at least
* one error will be set, but it does not guarantee that all possible
* errors will be set. Accordingly, you may not safely decide to
* ignore any particular type of error. For example, it would be
* incorrect to mask %G_TLS_CERTIFICATE_EXPIRED if you want to allow
* expired certificates, because this could potentially be the only
* error flag set even if other problems exist with the certificate.
*
* Since: 2.28
*/
g_object_class_install_property (gobject_class, PROP_PEER_CERTIFICATE_ERRORS,
g_param_spec_flags ("peer-certificate-errors", NULL, NULL,
G_TYPE_TLS_CERTIFICATE_FLAGS,
0,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:advertised-protocols: (nullable)
*
* The list of application-layer protocols that the connection
* advertises that it is willing to speak. See
* g_tls_connection_set_advertised_protocols().
*
* Since: 2.60
*/
g_object_class_install_property (gobject_class, PROP_ADVERTISED_PROTOCOLS,
g_param_spec_boxed ("advertised-protocols", NULL, NULL,
G_TYPE_STRV,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:negotiated-protocol:
*
* The application-layer protocol negotiated during the TLS
* handshake. See g_tls_connection_get_negotiated_protocol().
*
* Since: 2.60
*/
g_object_class_install_property (gobject_class, PROP_NEGOTIATED_PROTOCOL,
g_param_spec_string ("negotiated-protocol", NULL, NULL,
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:protocol-version:
*
* The TLS protocol version in use. See g_tls_connection_get_protocol_version().
*
* Since: 2.70
*/
g_object_class_install_property (gobject_class, PROP_PROTOCOL_VERSION,
g_param_spec_enum ("protocol-version", NULL, NULL,
G_TYPE_TLS_PROTOCOL_VERSION,
G_TLS_PROTOCOL_VERSION_UNKNOWN,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection:ciphersuite-name: (nullable)
*
* The name of the TLS ciphersuite in use. See g_tls_connection_get_ciphersuite_name().
*
* Since: 2.70
*/
g_object_class_install_property (gobject_class, PROP_CIPHERSUITE_NAME,
g_param_spec_string ("ciphersuite-name", NULL, NULL,
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
/**
* GTlsConnection::accept-certificate:
* @conn: a #GTlsConnection
* @peer_cert: the peer's #GTlsCertificate
* @errors: the problems with @peer_cert.
*
* Emitted during the TLS handshake after the peer certificate has
* been received. You can examine @peer_cert's certification path by
* calling g_tls_certificate_get_issuer() on it.
*
* For a client-side connection, @peer_cert is the server's
* certificate, and the signal will only be emitted if the
* certificate was not acceptable according to @conn's
* #GTlsClientConnection:validation_flags. If you would like the
* certificate to be accepted despite @errors, return %TRUE from the
* signal handler. Otherwise, if no handler accepts the certificate,
* the handshake will fail with %G_TLS_ERROR_BAD_CERTIFICATE.
*
* GLib guarantees that if certificate verification fails, this signal
* will be emitted with at least one error will be set in @errors, but
* it does not guarantee that all possible errors will be set.
* Accordingly, you may not safely decide to ignore any particular
* type of error. For example, it would be incorrect to ignore
* %G_TLS_CERTIFICATE_EXPIRED if you want to allow expired
* certificates, because this could potentially be the only error flag
* set even if other problems exist with the certificate.
*
* For a server-side connection, @peer_cert is the certificate
* presented by the client, if this was requested via the server's
* #GTlsServerConnection:authentication_mode. On the server side,
* the signal is always emitted when the client presents a
* certificate, and the certificate will only be accepted if a
* handler returns %TRUE.
*
* Note that if this signal is emitted as part of asynchronous I/O
* in the main thread, then you should not attempt to interact with
* the user before returning from the signal handler. If you want to
* let the user decide whether or not to accept the certificate, you
* would have to return %FALSE from the signal handler on the first
* attempt, and then after the connection attempt returns a
* %G_TLS_ERROR_BAD_CERTIFICATE, you can interact with the user, and
* if the user decides to accept the certificate, remember that fact,
* create a new connection, and return %TRUE from the signal handler
* the next time.
*
* If you are doing I/O in another thread, you do not
* need to worry about this, and can simply block in the signal
* handler until the UI thread returns an answer.
*
* Returns: %TRUE to accept @peer_cert (which will also
* immediately end the signal emission). %FALSE to allow the signal
* emission to continue, which will cause the handshake to fail if
* no one else overrides it.
*
* Since: 2.28
*/
signals[ACCEPT_CERTIFICATE] =
g_signal_new (I_("accept-certificate"),
G_TYPE_TLS_CONNECTION,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GTlsConnectionClass, accept_certificate),
g_signal_accumulator_true_handled, NULL,
_g_cclosure_marshal_BOOLEAN__OBJECT_FLAGS,
G_TYPE_BOOLEAN, 2,
G_TYPE_TLS_CERTIFICATE,
G_TYPE_TLS_CERTIFICATE_FLAGS);
g_signal_set_va_marshaller (signals[ACCEPT_CERTIFICATE],
G_TYPE_FROM_CLASS (klass),
_g_cclosure_marshal_BOOLEAN__OBJECT_FLAGSv);
}
static void
g_tls_connection_init (GTlsConnection *conn)
{
}
static void
g_tls_connection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static void
g_tls_connection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
/**
* g_tls_connection_set_use_system_certdb:
* @conn: a #GTlsConnection
* @use_system_certdb: whether to use the system certificate database
*
* Sets whether @conn uses the system certificate database to verify
* peer certificates. This is %TRUE by default. If set to %FALSE, then
* peer certificate validation will always set the
* %G_TLS_CERTIFICATE_UNKNOWN_CA error (meaning
* #GTlsConnection::accept-certificate will always be emitted on
* client-side connections, unless that bit is not set in
* #GTlsClientConnection:validation-flags).
*
* Deprecated: 2.30: Use g_tls_connection_set_database() instead
*/
void
g_tls_connection_set_use_system_certdb (GTlsConnection *conn,
gboolean use_system_certdb)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_object_set (G_OBJECT (conn),
"use-system-certdb", use_system_certdb,
NULL);
}
/**
* g_tls_connection_get_use_system_certdb:
* @conn: a #GTlsConnection
*
* Gets whether @conn uses the system certificate database to verify
* peer certificates. See g_tls_connection_set_use_system_certdb().
*
* Returns: whether @conn uses the system certificate database
*
* Deprecated: 2.30: Use g_tls_connection_get_database() instead
*/
gboolean
g_tls_connection_get_use_system_certdb (GTlsConnection *conn)
{
gboolean use_system_certdb;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), TRUE);
g_object_get (G_OBJECT (conn),
"use-system-certdb", &use_system_certdb,
NULL);
return use_system_certdb;
}
/**
* g_tls_connection_set_database:
* @conn: a #GTlsConnection
* @database: (nullable): a #GTlsDatabase
*
* Sets the certificate database that is used to verify peer certificates.
* This is set to the default database by default. See
* g_tls_backend_get_default_database(). If set to %NULL, then
* peer certificate validation will always set the
* %G_TLS_CERTIFICATE_UNKNOWN_CA error (meaning
* #GTlsConnection::accept-certificate will always be emitted on
* client-side connections, unless that bit is not set in
* #GTlsClientConnection:validation-flags).
*
* There are nonintuitive security implications when using a non-default
* database. See #GTlsConnection:database for details.
*
* Since: 2.30
*/
void
g_tls_connection_set_database (GTlsConnection *conn,
GTlsDatabase *database)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_return_if_fail (database == NULL || G_IS_TLS_DATABASE (database));
g_object_set (G_OBJECT (conn),
"database", database,
NULL);
}
/**
* g_tls_connection_get_database:
* @conn: a #GTlsConnection
*
* Gets the certificate database that @conn uses to verify
* peer certificates. See g_tls_connection_set_database().
*
* Returns: (transfer none) (nullable): the certificate database that @conn uses or %NULL
*
* Since: 2.30
*/
GTlsDatabase*
g_tls_connection_get_database (GTlsConnection *conn)
{
GTlsDatabase *database = NULL;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
g_object_get (G_OBJECT (conn),
"database", &database,
NULL);
if (database)
g_object_unref (database);
return database;
}
/**
* g_tls_connection_set_certificate:
* @conn: a #GTlsConnection
* @certificate: the certificate to use for @conn
*
* This sets the certificate that @conn will present to its peer
* during the TLS handshake. For a #GTlsServerConnection, it is
* mandatory to set this, and that will normally be done at construct
* time.
*
* For a #GTlsClientConnection, this is optional. If a handshake fails
* with %G_TLS_ERROR_CERTIFICATE_REQUIRED, that means that the server
* requires a certificate, and if you try connecting again, you should
* call this method first. You can call
* g_tls_client_connection_get_accepted_cas() on the failed connection
* to get a list of Certificate Authorities that the server will
* accept certificates from.
*
* (It is also possible that a server will allow the connection with
* or without a certificate; in that case, if you don't provide a
* certificate, you can tell that the server requested one by the fact
* that g_tls_client_connection_get_accepted_cas() will return
* non-%NULL.)
*
* Since: 2.28
*/
void
g_tls_connection_set_certificate (GTlsConnection *conn,
GTlsCertificate *certificate)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_return_if_fail (G_IS_TLS_CERTIFICATE (certificate));
g_object_set (G_OBJECT (conn), "certificate", certificate, NULL);
}
/**
* g_tls_connection_get_certificate:
* @conn: a #GTlsConnection
*
* Gets @conn's certificate, as set by
* g_tls_connection_set_certificate().
*
* Returns: (transfer none) (nullable): @conn's certificate, or %NULL
*
* Since: 2.28
*/
GTlsCertificate *
g_tls_connection_get_certificate (GTlsConnection *conn)
{
GTlsCertificate *certificate;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
g_object_get (G_OBJECT (conn), "certificate", &certificate, NULL);
if (certificate)
g_object_unref (certificate);
return certificate;
}
/**
* g_tls_connection_set_interaction:
* @conn: a connection
* @interaction: (nullable): an interaction object, or %NULL
*
* Set the object that will be used to interact with the user. It will be used
* for things like prompting the user for passwords.
*
* The @interaction argument will normally be a derived subclass of
* #GTlsInteraction. %NULL can also be provided if no user interaction
* should occur for this connection.
*
* Since: 2.30
*/
void
g_tls_connection_set_interaction (GTlsConnection *conn,
GTlsInteraction *interaction)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_return_if_fail (interaction == NULL || G_IS_TLS_INTERACTION (interaction));
g_object_set (G_OBJECT (conn), "interaction", interaction, NULL);
}
/**
* g_tls_connection_get_interaction:
* @conn: a connection
*
* Get the object that will be used to interact with the user. It will be used
* for things like prompting the user for passwords. If %NULL is returned, then
* no user interaction will occur for this connection.
*
* Returns: (transfer none) (nullable): The interaction object.
*
* Since: 2.30
*/
GTlsInteraction *
g_tls_connection_get_interaction (GTlsConnection *conn)
{
GTlsInteraction *interaction = NULL;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
g_object_get (G_OBJECT (conn), "interaction", &interaction, NULL);
if (interaction)
g_object_unref (interaction);
return interaction;
}
/**
* g_tls_connection_get_peer_certificate:
* @conn: a #GTlsConnection
*
* Gets @conn's peer's certificate after the handshake has completed
* or failed. (It is not set during the emission of
* #GTlsConnection::accept-certificate.)
*
* Returns: (transfer none) (nullable): @conn's peer's certificate, or %NULL
*
* Since: 2.28
*/
GTlsCertificate *
g_tls_connection_get_peer_certificate (GTlsConnection *conn)
{
GTlsCertificate *peer_certificate;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
g_object_get (G_OBJECT (conn), "peer-certificate", &peer_certificate, NULL);
if (peer_certificate)
g_object_unref (peer_certificate);
return peer_certificate;
}
/**
* g_tls_connection_get_peer_certificate_errors:
* @conn: a #GTlsConnection
*
* Gets the errors associated with validating @conn's peer's
* certificate, after the handshake has completed or failed. (It is
* not set during the emission of #GTlsConnection::accept-certificate.)
*
* See #GTlsConnection:peer-certificate-errors for more information.
*
* Returns: @conn's peer's certificate errors
*
* Since: 2.28
*/
GTlsCertificateFlags
g_tls_connection_get_peer_certificate_errors (GTlsConnection *conn)
{
GTlsCertificateFlags errors;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), 0);
g_object_get (G_OBJECT (conn), "peer-certificate-errors", &errors, NULL);
return errors;
}
/**
* g_tls_connection_set_require_close_notify:
* @conn: a #GTlsConnection
* @require_close_notify: whether or not to require close notification
*
* Sets whether or not @conn expects a proper TLS close notification
* before the connection is closed. If this is %TRUE (the default),
* then @conn will expect to receive a TLS close notification from its
* peer before the connection is closed, and will return a
* %G_TLS_ERROR_EOF error if the connection is closed without proper
* notification (since this may indicate a network error, or
* man-in-the-middle attack).
*
* In some protocols, the application will know whether or not the
* connection was closed cleanly based on application-level data
* (because the application-level data includes a length field, or is
* somehow self-delimiting); in this case, the close notify is
* redundant and sometimes omitted. (TLS 1.1 explicitly allows this;
* in TLS 1.0 it is technically an error, but often done anyway.) You
* can use g_tls_connection_set_require_close_notify() to tell @conn
* to allow an "unannounced" connection close, in which case the close
* will show up as a 0-length read, as in a non-TLS
* #GSocketConnection, and it is up to the application to check that
* the data has been fully received.
*
* Note that this only affects the behavior when the peer closes the
* connection; when the application calls g_io_stream_close() itself
* on @conn, this will send a close notification regardless of the
* setting of this property. If you explicitly want to do an unclean
* close, you can close @conn's #GTlsConnection:base-io-stream rather
* than closing @conn itself, but note that this may only be done when no other
* operations are pending on @conn or the base I/O stream.
*
* Since: 2.28
*/
void
g_tls_connection_set_require_close_notify (GTlsConnection *conn,
gboolean require_close_notify)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_object_set (G_OBJECT (conn),
"require-close-notify", require_close_notify,
NULL);
}
/**
* g_tls_connection_get_require_close_notify:
* @conn: a #GTlsConnection
*
* Tests whether or not @conn expects a proper TLS close notification
* when the connection is closed. See
* g_tls_connection_set_require_close_notify() for details.
*
* Returns: %TRUE if @conn requires a proper TLS close
* notification.
*
* Since: 2.28
*/
gboolean
g_tls_connection_get_require_close_notify (GTlsConnection *conn)
{
gboolean require_close_notify;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), TRUE);
g_object_get (G_OBJECT (conn),
"require-close-notify", &require_close_notify,
NULL);
return require_close_notify;
}
/**
* g_tls_connection_set_rehandshake_mode:
* @conn: a #GTlsConnection
* @mode: the rehandshaking mode
*
* Since GLib 2.64, changing the rehandshake mode is no longer supported
* and will have no effect. With TLS 1.3, rehandshaking has been removed from
* the TLS protocol, replaced by separate post-handshake authentication and
* rekey operations.
*
* Since: 2.28
*
* Deprecated: 2.60. Changing the rehandshake mode is no longer
* required for compatibility. Also, rehandshaking has been removed
* from the TLS protocol in TLS 1.3.
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
void
g_tls_connection_set_rehandshake_mode (GTlsConnection *conn,
GTlsRehandshakeMode mode)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_object_set (G_OBJECT (conn),
"rehandshake-mode", G_TLS_REHANDSHAKE_SAFELY,
NULL);
}
G_GNUC_END_IGNORE_DEPRECATIONS
/**
* g_tls_connection_get_rehandshake_mode:
* @conn: a #GTlsConnection
*
* Gets @conn rehandshaking mode. See
* g_tls_connection_set_rehandshake_mode() for details.
*
* Returns: %G_TLS_REHANDSHAKE_SAFELY
*
* Since: 2.28
*
* Deprecated: 2.60. Changing the rehandshake mode is no longer
* required for compatibility. Also, rehandshaking has been removed
* from the TLS protocol in TLS 1.3.
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GTlsRehandshakeMode
g_tls_connection_get_rehandshake_mode (GTlsConnection *conn)
{
GTlsRehandshakeMode mode;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), G_TLS_REHANDSHAKE_SAFELY);
/* Continue to call g_object_get(), even though the return value is
* ignored, so that behavior doesnt change for derived classes.
*/
g_object_get (G_OBJECT (conn),
"rehandshake-mode", &mode,
NULL);
return G_TLS_REHANDSHAKE_SAFELY;
}
G_GNUC_END_IGNORE_DEPRECATIONS
/**
* g_tls_connection_set_advertised_protocols:
* @conn: a #GTlsConnection
* @protocols: (array zero-terminated=1) (nullable): a %NULL-terminated
* array of ALPN protocol names (eg, "http/1.1", "h2"), or %NULL
*
* Sets the list of application-layer protocols to advertise that the
* caller is willing to speak on this connection. The
* Application-Layer Protocol Negotiation (ALPN) extension will be
* used to negotiate a compatible protocol with the peer; use
* g_tls_connection_get_negotiated_protocol() to find the negotiated
* protocol after the handshake. Specifying %NULL for the the value
* of @protocols will disable ALPN negotiation.
*
* See [IANA TLS ALPN Protocol IDs](https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids)
* for a list of registered protocol IDs.
*
* Since: 2.60
*/
void
g_tls_connection_set_advertised_protocols (GTlsConnection *conn,
const gchar * const *protocols)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
g_object_set (G_OBJECT (conn),
"advertised-protocols", protocols,
NULL);
}
/**
* g_tls_connection_get_negotiated_protocol:
* @conn: a #GTlsConnection
*
* Gets the name of the application-layer protocol negotiated during
* the handshake.
*
* If the peer did not use the ALPN extension, or did not advertise a
* protocol that matched one of @conn's protocols, or the TLS backend
* does not support ALPN, then this will be %NULL. See
* g_tls_connection_set_advertised_protocols().
*
* Returns: (nullable): the negotiated protocol, or %NULL
*
* Since: 2.60
*/
const gchar *
g_tls_connection_get_negotiated_protocol (GTlsConnection *conn)
{
GTlsConnectionClass *class;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
class = G_TLS_CONNECTION_GET_CLASS (conn);
if (class->get_negotiated_protocol == NULL)
return NULL;
return class->get_negotiated_protocol (conn);
}
/**
* g_tls_channel_binding_error_quark:
*
* Gets the TLS channel binding error quark.
*
* Returns: a #GQuark.
*
* Since: 2.66
*/
G_DEFINE_QUARK (g-tls-channel-binding-error-quark, g_tls_channel_binding_error)
/**
* g_tls_connection_get_channel_binding_data:
* @conn: a #GTlsConnection
* @type: #GTlsChannelBindingType type of data to fetch
* @data: (out callee-allocates)(optional)(transfer none): #GByteArray is
* filled with the binding data, or %NULL
* @error: a #GError pointer, or %NULL
*
* Query the TLS backend for TLS channel binding data of @type for @conn.
*
* This call retrieves TLS channel binding data as specified in RFC
* [5056](https://tools.ietf.org/html/rfc5056), RFC
* [5929](https://tools.ietf.org/html/rfc5929), and related RFCs. The
* binding data is returned in @data. The @data is resized by the callee
* using #GByteArray buffer management and will be freed when the @data
* is destroyed by g_byte_array_unref(). If @data is %NULL, it will only
* check whether TLS backend is able to fetch the data (e.g. whether @type
* is supported by the TLS backend). It does not guarantee that the data
* will be available though. That could happen if TLS connection does not
* support @type or the binding data is not available yet due to additional
* negotiation or input required.
*
* Returns: %TRUE on success, %FALSE otherwise
*
* Since: 2.66
*/
gboolean
g_tls_connection_get_channel_binding_data (GTlsConnection *conn,
GTlsChannelBindingType type,
GByteArray *data,
GError **error)
{
GTlsConnectionClass *class;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
class = G_TLS_CONNECTION_GET_CLASS (conn);
if (class->get_binding_data == NULL)
{
g_set_error_literal (error, G_TLS_CHANNEL_BINDING_ERROR,
G_TLS_CHANNEL_BINDING_ERROR_NOT_IMPLEMENTED,
_("TLS backend does not implement TLS binding retrieval"));
return FALSE;
}
return class->get_binding_data (conn, type, data, error);
}
/**
* g_tls_connection_handshake:
* @conn: a #GTlsConnection
* @cancellable: (nullable): a #GCancellable, or %NULL
* @error: a #GError, or %NULL
*
* Attempts a TLS handshake on @conn.
*
* On the client side, it is never necessary to call this method;
* although the connection needs to perform a handshake after
* connecting (or after sending a "STARTTLS"-type command),
* #GTlsConnection will handle this for you automatically when you try
* to send or receive data on the connection. You can call
* g_tls_connection_handshake() manually if you want to know whether
* the initial handshake succeeded or failed (as opposed to just
* immediately trying to use @conn to read or write, in which case,
* if it fails, it may not be possible to tell if it failed before or
* after completing the handshake), but beware that servers may reject
* client authentication after the handshake has completed, so a
* successful handshake does not indicate the connection will be usable.
*
* Likewise, on the server side, although a handshake is necessary at
* the beginning of the communication, you do not need to call this
* function explicitly unless you want clearer error reporting.
*
* Previously, calling g_tls_connection_handshake() after the initial
* handshake would trigger a rehandshake; however, this usage was
* deprecated in GLib 2.60 because rehandshaking was removed from the
* TLS protocol in TLS 1.3. Since GLib 2.64, calling this function after
* the initial handshake will no longer do anything.
*
* When using a #GTlsConnection created by #GSocketClient, the
* #GSocketClient performs the initial handshake, so calling this
* function manually is not recommended.
*
* #GTlsConnection::accept_certificate may be emitted during the
* handshake.
*
* Returns: success or failure
*
* Since: 2.28
*/
gboolean
g_tls_connection_handshake (GTlsConnection *conn,
GCancellable *cancellable,
GError **error)
{
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), FALSE);
return G_TLS_CONNECTION_GET_CLASS (conn)->handshake (conn, cancellable, error);
}
/**
* g_tls_connection_handshake_async:
* @conn: a #GTlsConnection
* @io_priority: the [I/O priority](iface.AsyncResult.html#io-priority) of the request
* @cancellable: (nullable): a #GCancellable, or %NULL
* @callback: callback to call when the handshake is complete
* @user_data: the data to pass to the callback function
*
* Asynchronously performs a TLS handshake on @conn. See
* g_tls_connection_handshake() for more information.
*
* Since: 2.28
*/
void
g_tls_connection_handshake_async (GTlsConnection *conn,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_return_if_fail (G_IS_TLS_CONNECTION (conn));
G_TLS_CONNECTION_GET_CLASS (conn)->handshake_async (conn, io_priority,
cancellable,
callback, user_data);
}
/**
* g_tls_connection_handshake_finish:
* @conn: a #GTlsConnection
* @result: a #GAsyncResult.
* @error: a #GError pointer, or %NULL
*
* Finish an asynchronous TLS handshake operation. See
* g_tls_connection_handshake() for more information.
*
* Returns: %TRUE on success, %FALSE on failure, in which
* case @error will be set.
*
* Since: 2.28
*/
gboolean
g_tls_connection_handshake_finish (GTlsConnection *conn,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), FALSE);
return G_TLS_CONNECTION_GET_CLASS (conn)->handshake_finish (conn, result, error);
}
/**
* g_tls_connection_get_protocol_version:
* @conn: a #GTlsConnection
*
* Returns the current TLS protocol version, which may be
* %G_TLS_PROTOCOL_VERSION_UNKNOWN if the connection has not handshaked, or
* has been closed, or if the TLS backend has implemented a protocol version
* that is not a recognized #GTlsProtocolVersion.
*
* Returns: The current TLS protocol version
*
* Since: 2.70
*/
GTlsProtocolVersion
g_tls_connection_get_protocol_version (GTlsConnection *conn)
{
GTlsProtocolVersion protocol_version;
GEnumClass *enum_class;
GEnumValue *enum_value;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), G_TLS_PROTOCOL_VERSION_UNKNOWN);
g_object_get (G_OBJECT (conn),
"protocol-version", &protocol_version,
NULL);
/* Convert unknown values to G_TLS_PROTOCOL_VERSION_UNKNOWN. */
enum_class = g_type_class_peek_static (G_TYPE_TLS_PROTOCOL_VERSION);
enum_value = g_enum_get_value (enum_class, protocol_version);
return enum_value ? protocol_version : G_TLS_PROTOCOL_VERSION_UNKNOWN;
}
/**
* g_tls_connection_get_ciphersuite_name:
* @conn: a #GTlsConnection
*
* Returns the name of the current TLS ciphersuite, or %NULL if the
* connection has not handshaked or has been closed. Beware that the TLS
* backend may use any of multiple different naming conventions, because
* OpenSSL and GnuTLS have their own ciphersuite naming conventions that
* are different from each other and different from the standard, IANA-
* registered ciphersuite names. The ciphersuite name is intended to be
* displayed to the user for informative purposes only, and parsing it
* is not recommended.
*
* Returns: (nullable): The name of the current TLS ciphersuite, or %NULL
*
* Since: 2.70
*/
gchar *
g_tls_connection_get_ciphersuite_name (GTlsConnection *conn)
{
gchar *ciphersuite_name;
g_return_val_if_fail (G_IS_TLS_CONNECTION (conn), NULL);
g_object_get (G_OBJECT (conn),
"ciphersuite-name", &ciphersuite_name,
NULL);
return g_steal_pointer (&ciphersuite_name);
}
/**
* g_tls_error_quark:
*
* Gets the TLS error quark.
*
* Returns: a #GQuark.
*
* Since: 2.28
*/
G_DEFINE_QUARK (g-tls-error-quark, g_tls_error)
/**
* g_tls_connection_emit_accept_certificate:
* @conn: a #GTlsConnection
* @peer_cert: the peer's #GTlsCertificate
* @errors: the problems with @peer_cert
*
* Used by #GTlsConnection implementations to emit the
* #GTlsConnection::accept-certificate signal.
*
* Returns: %TRUE if one of the signal handlers has returned
* %TRUE to accept @peer_cert
*
* Since: 2.28
*/
gboolean
g_tls_connection_emit_accept_certificate (GTlsConnection *conn,
GTlsCertificate *peer_cert,
GTlsCertificateFlags errors)
{
gboolean accept = FALSE;
g_signal_emit (conn, signals[ACCEPT_CERTIFICATE], 0,
peer_cert, errors, &accept);
return accept;
}