/***************************************************************************
 * ICMPv6RRBody.h -- The ICMPv6RRBody Class represents an ICMP version 6   *
 * Router Renumbering message body. It contains methods to set any header  *
 * field. In general, these  methods do error checkings and byte order     *
 * conversions.                                                            *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
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 ***************************************************************************/
/* This code was originally part of the Nping tool.                        */

#include "ICMPv6RRBody.h"


ICMPv6RRBody::ICMPv6RRBody() {
  this->reset();
} /* End of ICMPv6RRBody constructor */


ICMPv6RRBody::~ICMPv6RRBody() {

} /* End of ICMPv6RRBody destructor */


/** Sets every class attribute to zero */
void ICMPv6RRBody::reset(){
  memset(&this->h, 0, sizeof(nping_icmpv6_rr_body_t));
  h_mp = (rr_match_prefix_t *)this->h.data;
  h_up = (rr_use_prefix_t   *)this->h.data;
  h_r  = (rr_result_msg_t   *)this->h.data;
} /* End of reset() */


/** @warning This method is essential for the superclass getBinaryBuffer()
 *  method to work. Do NOT change a thing unless you know what you're doing  */
u8 *ICMPv6RRBody::getBufferPointer(){
  return (u8*)(&this->h);
} /* End of getBufferPointer() */


/** Stores supplied packet in the internal buffer so the information
  * can be accessed using the standard get & set methods.
  * @warning  The ICMPv6RRBody class is able to hold a maximum of
  * sizeof(nping_icmpv6_rr_body_t) bytes. If the supplied buffer is longer than
  * that, only the first sizeof(nping_icmpv6_rr_body_t) bytes will be stored in
  * the internal buffer.
  * @warning Supplied len MUST be at least ICMPv6_RR_MIN_LENGTH bytes
  * @return OP_SUCCESS on success and OP_FAILURE in case of error */
int ICMPv6RRBody::storeRecvData(const u8 *buf, size_t len){
  if(buf==NULL || len<ICMPv6_RR_MIN_LENGTH){
    return OP_FAILURE;
  }else{
    int stored_len = MIN( sizeof(nping_icmpv6_rr_body_t), len);
    this->reset(); /* Re-init the object, just in case the caller had used it already */
    this->length=stored_len;
    memcpy(&(this->h), buf, stored_len);
  }
 return OP_SUCCESS;
} /* End of storeRecvData() */