1 /* 2 * edns-subnet/edns-subnet.h - Subnet option related constants 3 * 4 * Copyright (c) 2013, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 /** 36 * \file 37 * Subnet option related constants. 38 */ 39 40 #include "util/net_help.h" 41 42 #ifndef EDNSSUBNET_EDNSSUBNET_H 43 #define EDNSSUBNET_EDNSSUBNET_H 44 45 /** In use by the edns subnet option code, as assigned by IANA */ 46 #define EDNSSUBNET_ADDRFAM_IP4 1 47 #define EDNSSUBNET_ADDRFAM_IP6 2 48 49 /** 50 * ECS option 51 */ 52 struct ecs_data { 53 uint16_t subnet_addr_fam; 54 uint8_t subnet_source_mask; 55 uint8_t subnet_scope_mask; 56 uint8_t subnet_addr[INET6_SIZE]; 57 int subnet_validdata; 58 }; 59 60 /** 61 * copy the first n BITS from src to dst iff both src and dst 62 * are large enough, return 0 on success 63 */ 64 int 65 copy_clear(uint8_t* dst, size_t dstlen, uint8_t* src, size_t srclen, size_t n); 66 67 #endif /* EDNSSUBNET_EDNSSUBNET_H */ 68