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/*-
* Copyright 2016 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_LIBUTIL_SSL_UTIL_H_
#define SRC_LIBUTIL_SSL_UTIL_H_
#include "config.h"
#include "libutil/addr.h"
#include "libutil/libev_helper.h"
#ifdef __cplusplus
extern "C" {
#endif
struct rspamd_ssl_connection;
typedef void (*rspamd_ssl_handler_t)(int fd, short what, gpointer d);
typedef void (*rspamd_ssl_error_handler_t)(gpointer d, GError *err);
/**
* Creates a new ssl connection data structure
* @param ssl_ctx initialized SSL_CTX structure
* @return opaque connection data
*/
struct rspamd_ssl_connection *rspamd_ssl_connection_new(gpointer ssl_ctx,
struct ev_loop *ev_base,
gboolean verify_peer,
const char *log_tag);
/**
* Connects SSL session using the specified (connected) FD
* @param conn connection
* @param fd fd to use
* @param hostname hostname for SNI
* @param ev event to use
* @param tv timeout for connection
* @param handler connected session handler
* @param handler_data opaque data
* @return TRUE if a session has been connected
*/
gboolean rspamd_ssl_connect_fd(struct rspamd_ssl_connection *conn, int fd,
const char *hostname, struct rspamd_io_ev *ev, ev_tstamp timeout,
rspamd_ssl_handler_t handler, rspamd_ssl_error_handler_t err_handler,
gpointer handler_data);
/**
* Restores SSL handlers for the existing ssl connection (e.g. after keepalive)
* @param conn
* @param handler
* @param err_handler
* @param handler_data
*/
void rspamd_ssl_connection_restore_handlers(struct rspamd_ssl_connection *conn,
rspamd_ssl_handler_t handler,
rspamd_ssl_error_handler_t err_handler,
gpointer handler_data,
short ev_what);
/**
* Perform async read from SSL socket
* @param conn
* @param buf
* @param buflen
* @return
*/
gssize rspamd_ssl_read(struct rspamd_ssl_connection *conn, gpointer buf,
gsize buflen);
/**
* Perform async write to ssl buffer
* @param conn
* @param buf
* @param buflen
* @param ev
* @param tv
* @return
*/
gssize rspamd_ssl_write(struct rspamd_ssl_connection *conn, gconstpointer buf,
gsize buflen);
/**
* Emulate writev by copying iovec to a temporary buffer
* @param conn
* @param buf
* @param buflen
* @return
*/
gssize rspamd_ssl_writev(struct rspamd_ssl_connection *conn, struct iovec *iov,
gsize iovlen);
/**
* Removes connection data
* @param conn
*/
void rspamd_ssl_connection_free(struct rspamd_ssl_connection *conn);
gpointer rspamd_init_ssl_ctx(void);
gpointer rspamd_init_ssl_ctx_noverify(void);
void rspamd_ssl_ctx_config(struct rspamd_config *cfg, gpointer ssl_ctx);
void rspamd_ssl_ctx_free(gpointer ssl_ctx);
void rspamd_openssl_maybe_init(void);
#ifdef __cplusplus
}
#endif
#endif /* SRC_LIBUTIL_SSL_UTIL_H_ */
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