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/*
* pythonmod_utils.h: utils header file
*
* Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
* Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the organization nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
* Utility functions for the python module that perform stores and loads and
* conversions.
*/
#ifndef PYTHONMOD_UTILS_H
#define PYTHONMOD_UTILS_H
#include "util/module.h"
/**
* Store the reply_info and query_info pair in message cache (qstate->msg_cache)
*
* @param qstate: module environment
* @param qinfo: query info, the query for which answer is stored.
* @param msgrep: reply in dns_msg
* @param is_referral: If true, then the given message to be stored is a
* referral. The cache implementation may use this as a hint.
* It will store only the RRsets, not the message.
* @return 0 on alloc error (out of memory).
*/
int storeQueryInCache(struct module_qstate* qstate, struct query_info* qinfo, struct reply_info* msgrep, int is_referral);
/**
* Invalidate the message associated with query_info stored in message cache.
*
* This function invalidates the record in message cache associated with the given query only if such a record exists.
*
* @param qstate: module environment
* @param qinfo: query info, the query for which answer is stored.
*/
void invalidateQueryInCache(struct module_qstate* qstate, struct query_info* qinfo);
/**
* Create response according to the ldns packet content
*
* This function fills qstate.return_msg up with data of a given packet
*
* @param qstate: module environment
* @param pkt: a sldns_buffer which contains sldns_packet data
* @return 0 on failure, out of memory or parse error.
*/
int createResponse(struct module_qstate* qstate, sldns_buffer* pkt);
/**
* Convert reply->addr to string
* @param reply: comm reply with address in it.
* @param dest: destination string.
* @param maxlen: length of string buffer.
*/
void reply_addr2str(struct comm_reply* reply, char* dest, int maxlen);
#endif /* PYTHONMOD_UTILS_H */
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