1*875f57d0Shshoexer /* $OpenBSD: nat_traversal.h,v 1.4 2005/07/25 15:03:47 hshoexer Exp $ */ 2cd6bf844Sho 3cd6bf844Sho /* 4cd6bf844Sho * Copyright (c) 2004 H�kan Olsson. All rights reserved. 5cd6bf844Sho * 6cd6bf844Sho * Redistribution and use in source and binary forms, with or without 7cd6bf844Sho * modification, are permitted provided that the following conditions 8cd6bf844Sho * are met: 9cd6bf844Sho * 1. Redistributions of source code must retain the above copyright 10cd6bf844Sho * notice, this list of conditions and the following disclaimer. 11cd6bf844Sho * 2. Redistributions in binary form must reproduce the above copyright 12cd6bf844Sho * notice, this list of conditions and the following disclaimer in the 13cd6bf844Sho * documentation and/or other materials provided with the distribution. 14cd6bf844Sho * 15cd6bf844Sho * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16cd6bf844Sho * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17cd6bf844Sho * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18cd6bf844Sho * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19cd6bf844Sho * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20cd6bf844Sho * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21cd6bf844Sho * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22cd6bf844Sho * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23cd6bf844Sho * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24cd6bf844Sho * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25cd6bf844Sho */ 26cd6bf844Sho 27cd6bf844Sho #ifndef _NAT_TRAVERSAL_H_ 28cd6bf844Sho #define _NAT_TRAVERSAL_H_ 29cd6bf844Sho 30*875f57d0Shshoexer #define VID_DRAFT_V2 0 31*875f57d0Shshoexer #define VID_DRAFT_V2_N 1 32*875f57d0Shshoexer #define VID_DRAFT_V3 2 33*875f57d0Shshoexer #define VID_RFC3947 3 34*875f57d0Shshoexer 35*875f57d0Shshoexer struct nat_t_cap { 36*875f57d0Shshoexer int id; 37*875f57d0Shshoexer u_int32_t flags; 38*875f57d0Shshoexer const char *text; 39*875f57d0Shshoexer char *hash; 40*875f57d0Shshoexer size_t hashsize; 41*875f57d0Shshoexer }; 42*875f57d0Shshoexer 43bfb67d4dScloder /* 44bfb67d4dScloder * Set if -T is given on the command line to disable NAT-T support. 45bfb67d4dScloder */ 46bfb67d4dScloder extern int disable_nat_t; 47bfb67d4dScloder 48cd6bf844Sho void nat_t_init(void); 49cd6bf844Sho int nat_t_add_vendor_payloads(struct message *); 50cd6bf844Sho void nat_t_check_vendor_payload(struct message *, struct payload *); 51cd6bf844Sho int nat_t_exchange_add_nat_d(struct message *); 52cd6bf844Sho int nat_t_exchange_check_nat_d(struct message *); 53adfd2491Sho void nat_t_setup_keepalive(struct sa *); 54cd6bf844Sho 55cd6bf844Sho #endif /* _NAT_TRAVERSAL_H_ */ 56