| /* |
| This file is part of libmicrospdy |
| Copyright Copyright (C) 2012 Andrey Uzunov |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /** |
| * @file io_openssl.h |
| * @brief TLS handling. openssl with NPN is used, but as long as the |
| * functions conform to this interface file, other libraries |
| * can be used. |
| * @author Andrey Uzunov |
| */ |
| |
| #ifndef IO_OPENSSL_H |
| #define IO_OPENSSL_H |
| |
| #include "platform.h" |
| #include "io.h" |
| #include <openssl/err.h> |
| #include <openssl/ssl.h> |
| #include <openssl/rand.h> |
| |
| |
| /** |
| * Global initializing of openssl. Must be called only once in the program. |
| * |
| */ |
| void |
| SPDYF_openssl_global_init(); |
| |
| |
| /** |
| * Global deinitializing of openssl for the whole program. Should be called |
| * at the end of the program. |
| * |
| */ |
| void |
| SPDYF_openssl_global_deinit(); |
| |
| |
| /** |
| * Initializing of openssl for a specific daemon. |
| * Must be called when the daemon starts. |
| * |
| * @param daemon SPDY_Daemon for which openssl will be used. Daemon's |
| * certificate and key file are used. |
| * @return SPDY_YES on success or SPDY_NO on error |
| */ |
| int |
| SPDYF_openssl_init(struct SPDY_Daemon *daemon); |
| |
| |
| /** |
| * Deinitializing openssl for a daemon. Should be called |
| * when the deamon is stopped. |
| * |
| * @param daemon SPDY_Daemon which is being stopped |
| */ |
| void |
| SPDYF_openssl_deinit(struct SPDY_Daemon *daemon); |
| |
| |
| /** |
| * Initializing openssl for a specific connection. Must be called |
| * after the connection has been accepted. |
| * |
| * @param session SPDY_Session whose socket will be used by openssl |
| * @return SPDY_NO if some openssl funcs fail. SPDY_YES otherwise |
| */ |
| int |
| SPDYF_openssl_new_session(struct SPDY_Session *session); |
| |
| |
| /** |
| * Deinitializing openssl for a specific connection. Should be called |
| * closing session's socket. |
| * |
| * @param session SPDY_Session whose socket is used by openssl |
| */ |
| void |
| SPDYF_openssl_close_session(struct SPDY_Session *session); |
| |
| |
| /** |
| * Reading from a TLS socket. Reads available data and put it to the |
| * buffer. |
| * |
| * @param session for which data is received |
| * @param buffer where data from the socket will be written to |
| * @param size of the buffer |
| * @return number of bytes (at most size) read from the TLS connection |
| * 0 if the other party has closed the connection |
| * SPDY_IO_ERROR code on error |
| */ |
| int |
| SPDYF_openssl_recv(struct SPDY_Session *session, |
| void * buffer, |
| size_t size); |
| |
| |
| /** |
| * Writing to a TLS socket. Writes the data given into the buffer to the |
| * TLS socket. |
| * |
| * @param session whose context is used |
| * @param buffer from where data will be written to the socket |
| * @param size number of bytes to be taken from the buffer |
| * @return number of bytes (at most size) from the buffer that has been |
| * written to the TLS connection |
| * 0 if the other party has closed the connection |
| * SPDY_IO_ERROR code on error |
| */ |
| int |
| SPDYF_openssl_send(struct SPDY_Session *session, |
| const void * buffer, |
| size_t size); |
| |
| |
| /** |
| * Checks if there is data staying in the buffers of the underlying |
| * system that waits to be read. |
| * |
| * @param session which is checked |
| * @return SPDY_YES if data is pending or SPDY_NO otherwise |
| */ |
| int |
| SPDYF_openssl_is_pending(struct SPDY_Session *session); |
| |
| |
| /** |
| * Nothing. |
| * |
| * @param session |
| * @return SPDY_NO if writing must not happen in the call; |
| * SPDY_YES otherwise |
| */ |
| int |
| SPDYF_openssl_before_write(struct SPDY_Session *session); |
| |
| |
| /** |
| * Nothing. |
| * |
| * @param session |
| * @param was_written has the same value as the write function for the |
| * session will return |
| * @return returned value will be used by the write function to return |
| */ |
| int |
| SPDYF_openssl_after_write(struct SPDY_Session *session, int was_written); |
| |
| |
| #endif |