/usr/include/lwres/lwpacket.h is in libbind-dev 1:9.11.3+dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | /*
* Copyright (C) 1999-2001, 2004-2007, 2016 Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/* $Id: lwpacket.h,v 1.24 2007/06/19 23:47:23 tbox Exp $ */
#ifndef LWRES_LWPACKET_H
#define LWRES_LWPACKET_H 1
#include <lwres/lang.h>
#include <lwres/lwbuffer.h>
#include <lwres/result.h>
/*% lwres_lwpacket_t */
typedef struct lwres_lwpacket lwres_lwpacket_t;
/*% lwres_lwpacket structure */
struct lwres_lwpacket {
/*! The overall packet length, including the
* entire packet header.
* This field is filled in by the
* \link lwres_gabn.c lwres_gabn_*()\endlink
* and \link lwres_gnba.c lwres_gnba_*()\endlink calls.
*/
lwres_uint32_t length;
/*! Specifies the header format. Currently,
* there is only one format, #LWRES_LWPACKETVERSION_0.
* This field is filled in by the
* \link lwres_gabn.c lwres_gabn_*()\endlink
* and \link lwres_gnba.c lwres_gnba_*()\endlink calls.
*/
lwres_uint16_t version;
/*! Specifies library-defined flags for this packet, such as
* whether the packet is a request or a reply. None of
* these are definable by the caller, but library-defined values
* can be set by the caller. For example, one bit in this field
* indicates if the packet is a request or a response.
* This field is filled in by
* the application wits the exception of the
* #LWRES_LWPACKETFLAG_RESPONSE bit, which is set by the library
* in the
* \link lwres_gabn.c lwres_gabn_*()\endlink
* and \link lwres_gnba.c lwres_gnba_*()\endlink calls.
*/
lwres_uint16_t pktflags;
/*! Set by the requestor and is returned in all replies.
* If two packets from the same source have the same serial
* number and are from the same source, they are assumed to
* be duplicates and the latter ones may be dropped.
* (The library does not do this by default on replies, but
* does so on requests.)
*/
lwres_uint32_t serial;
/*! Opcodes between 0x04000000 and 0xffffffff
* are application defined. Opcodes between
* 0x00000000 and 0x03ffffff are
* reserved for library use.
* This field is filled in by the
* \link lwres_gabn.c lwres_gabn_*()\endlink
* and \link lwres_gnba.c lwres_gnba_*()\endlink calls.
*/
lwres_uint32_t opcode;
/*! Only valid for results.
* Results between 0x04000000 and 0xffffffff are application
* defined.
* Results between 0x00000000 and 0x03ffffff are reserved for
* library use.
* (This is the same reserved range defined in <isc/resultclass.h>,
* so it
* would be trivial to map ISC_R_* result codes into packet result
* codes when appropriate.)
* This field is filled in by the
* \link lwres_gabn.c lwres_gabn_*()\endlink
* and \link lwres_gnba.c lwres_gnba_*()\endlink calls.
*/
lwres_uint32_t result;
/*! Set to the maximum buffer size that the receiver can
* handle on requests, and the size of the buffer needed to
* satisfy a request
* when the buffer is too large for replies.
* This field is supplied by the application.
*/
lwres_uint32_t recvlength;
/*! The packet level auth type used.
* Authtypes between 0x1000 and 0xffff are application defined.
* Authtypes
* between 0x0000 and 0x0fff are reserved for library use.
* This is currently
* unused and MUST be set to zero.
*/
lwres_uint16_t authtype;
/*! The length of the authentication data.
* See the specific
* authtypes for more information on what is contained
* in this field. This is currently unused, and
* MUST be set to zero.
*/
lwres_uint16_t authlength;
};
#define LWRES_LWPACKET_LENGTH (4 * 5 + 2 * 4) /*%< Overall length. */
#define LWRES_LWPACKETFLAG_RESPONSE 0x0001U /*%< If set, pkt is a response. */
#define LWRES_LWPACKETVERSION_0 0 /*%< Header format. */
/*! \file lwres/lwpacket.h
*
*
* The remainder of the packet consists of two regions, one described by
* "authlen" and one of "length - authlen - sizeof(lwres_lwpacket_t)".
*
* That is:
*
* \code
* pkt header
* authlen bytes of auth information
* data bytes
* \endcode
*
* Currently defined opcodes:
*
*\li #LWRES_OPCODE_NOOP. Success is always returned, with the packet contents echoed.
*
*\li #LWRES_OPCODE_GETADDRSBYNAME. Return all known addresses for a given name.
* This may return NIS or /etc/hosts info as well as DNS
* information. Flags will be provided to indicate ip4/ip6
* addresses are desired.
*
*\li #LWRES_OPCODE_GETNAMEBYADDR. Return the hostname for the given address. Once
* again, it will return data from multiple sources.
*/
LWRES_LANG_BEGINDECLS
/* XXXMLG document */
lwres_result_t
lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt);
lwres_result_t
lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt);
LWRES_LANG_ENDDECLS
#endif /* LWRES_LWPACKET_H */
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