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/*
* QEMU I/O channels TLS driver
*
* Copyright (c) 2015 Red Hat, Inc.
*
* 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 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/>.
*
*/
#ifndef QIO_CHANNEL_TLS_H
#define QIO_CHANNEL_TLS_H
#include "io/channel.h"
#include "io/task.h"
#include "crypto/tlssession.h"
#define TYPE_QIO_CHANNEL_TLS "qio-channel-tls"
#define QIO_CHANNEL_TLS(obj) \
OBJECT_CHECK(QIOChannelTLS, (obj), TYPE_QIO_CHANNEL_TLS)
typedef struct QIOChannelTLS QIOChannelTLS;
/**
* QIOChannelTLS
*
* The QIOChannelTLS class provides a channel wrapper which
* can transparently run the TLS encryption protocol. It is
* usually used over a TCP socket, but there is actually no
* technical restriction on which type of master channel is
* used as the transport.
*
* This channel object is capable of running as either a
* TLS server or TLS client.
*/
struct QIOChannelTLS {
QIOChannel parent;
QIOChannel *master;
QCryptoTLSSession *session;
QIOChannelShutdown shutdown;
};
/**
* qio_channel_tls_new_server:
* @master: the underlying channel object
* @creds: the credentials to use for TLS handshake
* @aclname: the access control list for validating clients
* @errp: pointer to a NULL-initialized error object
*
* Create a new TLS channel that runs the server side of
* a TLS session. The TLS session handshake will use the
* credentials provided in @creds. If the @aclname parameter
* is non-NULL, then the client will have to provide
* credentials (ie a x509 client certificate) which will
* then be validated against the ACL.
*
* After creating the channel, it is mandatory to call
* the qio_channel_tls_handshake() method before attempting
* todo any I/O on the channel.
*
* Once the handshake has completed, all I/O should be done
* via the new TLS channel object and not the original
* master channel
*
* Returns: the new TLS channel object, or NULL
*/
QIOChannelTLS *
qio_channel_tls_new_server(QIOChannel *master,
QCryptoTLSCreds *creds,
const char *aclname,
Error **errp);
/**
* qio_channel_tls_new_client:
* @master: the underlying channel object
* @creds: the credentials to use for TLS handshake
* @hostname: the user specified server hostname
* @errp: pointer to a NULL-initialized error object
*
* Create a new TLS channel that runs the client side of
* a TLS session. The TLS session handshake will use the
* credentials provided in @creds. The @hostname parameter
* should provide the user specified hostname of the server
* and will be validated against the server's credentials
* (ie CommonName of the x509 certificate)
*
* After creating the channel, it is mandatory to call
* the qio_channel_tls_handshake() method before attempting
* todo any I/O on the channel.
*
* Once the handshake has completed, all I/O should be done
* via the new TLS channel object and not the original
* master channel
*
* Returns: the new TLS channel object, or NULL
*/
QIOChannelTLS *
qio_channel_tls_new_client(QIOChannel *master,
QCryptoTLSCreds *creds,
const char *hostname,
Error **errp);
/**
* qio_channel_tls_handshake:
* @ioc: the TLS channel object
* @func: the callback to invoke when completed
* @opaque: opaque data to pass to @func
* @destroy: optional callback to free @opaque
* @context: the context that TLS handshake will run with. If %NULL,
* the default context will be used
*
* Perform the TLS session handshake. This method
* will return immediately and the handshake will
* continue in the background, provided the main
* loop is running. When the handshake is complete,
* or fails, the @func callback will be invoked.
*/
void qio_channel_tls_handshake(QIOChannelTLS *ioc,
QIOTaskFunc func,
gpointer opaque,
GDestroyNotify destroy,
GMainContext *context);
/**
* qio_channel_tls_get_session:
* @ioc: the TLS channel object
*
* Get the TLS session used by the channel.
*
* Returns: the TLS session
*/
QCryptoTLSSession *
qio_channel_tls_get_session(QIOChannelTLS *ioc);
#endif /* QIO_CHANNEL_TLS_H */
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