text: /* Copyright (c) 2014, Vsevolod Stakhov
   * All rights reserved.
   *
   * 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.
   *
   * THIS SOFTWARE IS PROVIDED ''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 AUTHOR 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.
   */
  #ifndef PARSE_H_
  #define PARSE_H_
  
  #include "dns_private.h"
  
  /**
   * Compare request and reply checking names
   * @param req request object
   * @param in incoming packet
   * @param len length of the incoming packet
   * @return new position in the incoming packet or NULL if request is not equal to reply
   */
  uint8_t * rdns_request_reply_cmp (struct rdns_request *req, uint8_t *in, int len);
  
  /**
   * Parse labels in the packet
   * @param in incoming packet
   * @param target target to write the parsed label (out)
   * @param pos output position in the packet (it/out)
   * @param rep dns reply
   * @param remain remaining bytes (in/out)
   * @param make_name create name or just skip to the next label
   * @return true if a label has been successfully parsed
   */
  bool rdns_parse_labels (struct rdns_resolver *resolver,
  		uint8_t *in, char **target,
  		uint8_t **pos, struct rdns_reply *rep,
  		int *remain, bool make_name);
  
  /**
   * Parse resource record
   * @param in incoming packet
   * @param elt new reply entry
   * @param pos output position in the packet (it/out)
   * @param rep dns reply
   * @param remain remaining bytes (in/out)
   * @return 1 if rr has been parsed, 0 if rr has been skipped and -1 if there was a parsing error
   */
  int rdns_parse_rr (struct rdns_resolver *resolver,
  		uint8_t *in, struct rdns_reply_entry *elt, uint8_t **pos,
  		struct rdns_reply *rep, int *remain);
  
  #endif /* PARSE_H_ */
  