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99 lines
2.9 KiB
99 lines
2.9 KiB
/*
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* TLS module
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*
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* Copyright (C) 2010 iptelorg GmbH
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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* tls clear text write queue.
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* (queue clear text when SSL_write() cannot write it immediately due to
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* re-keying).
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* @file
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* @ingroup tls
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* Module: @ref tls
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*/
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#ifndef __tls_ct_wrq_h
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#define __tls_ct_wrq_h
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#include "tls_ct_q.h"
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#include "tls_server.h"
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#include "../../tcp_conn.h"
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/**
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* @brief Init clear text write queues support
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* @return 0 on success, < 0 on error.
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*/
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int tls_ct_wq_init();
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/**
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* @brief Destroy clear text write queues support
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*/
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void tls_ct_wq_destroy();
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/**
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* @brief Total number of written queued bytes in all the SSL connections
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* @return total number of written queued bytes in all SSL connections
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*/
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unsigned int tls_ct_wq_total_bytes();
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#define tls_ct_wq_empty(tc_q) (*(tc_q)==0 || (*(tc_q))->first==0)
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#define tls_ct_wq_non_empty(bq) (*(tc_q) && (*(tc_q))->first!=0)
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/**
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* @brief Wrapper over tls_ct_q_flush()
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*
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* Wrapper over tls_ct_q_flush(), besides doing a tls_ct_q_add it
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* also keeps track of queue size and total queued bytes.
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* @param c TCP connection
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* @param ct_q clear text queue
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* @param flags filled, @see tls_ct_q_add() for more details.
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* @param ssl_err set to the SSL err (SSL_ERROR_NONE on full success).
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* @return -1 on internal error, or the number of bytes flushed on success
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* (>=0).
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*/
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int tls_ct_wq_flush(struct tcp_connection* c, tls_ct_q** tc_q,
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int* flags, int* ssl_err);
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/**
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* @brief Wrapper over tls_ct_q_add()
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*
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* Wrapper over tls_ct_q_add(), besides doing a tls_ct_q_add it
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* also keeps track of queue size and total queued bytes.
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* If the maximum queue size is exceeded => error.
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* @param ct_q clear text queue
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* @param data data
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* @param size data size
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* @return 0 on success, < 0 on error (-1 memory allocation, -2 queue size
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* too big).
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*/
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int tls_ct_wq_add(tls_ct_q** ct_q, const void* data, unsigned int size);
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/**
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* @brief Wrapper over tls_ct_q_destroy()
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* Wrapper over tls_ct_q_destroy(), besides doing a tls_ct_q_destroy it
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* also keeps track of the total queued bytes.
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* @param ct_q clear text queue
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* @return number of bytes that used to be queued (>=0),
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*/
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unsigned int tls_ct_wq_free(tls_ct_q** ct_q);
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#endif /*__tls_ct_wrq_h*/
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/* vi: set ts=4 sw=4 tw=79:ai:cindent: */
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