#ifndef CYGONCE_NS_DNS_DNS_PRIV_H
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#ifndef CYGONCE_NS_DNS_DNS_PRIV_H
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#define CYGONCE_NS_DNS_DNS_PRIV_H
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#define CYGONCE_NS_DNS_DNS_PRIV_H
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//=============================================================================
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//=============================================================================
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//
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//
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// dns-priv.h
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// dns-priv.h
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//
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//
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// Private DNS client definitions.
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// Private DNS client definitions.
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//
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//
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//=============================================================================
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//=============================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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//
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// You should have received a copy of the GNU General Public License along
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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//
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// As a special exception, if other files instantiate templates or use macros
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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// in accordance with section (3) of the GNU General Public License.
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//
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//
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// This exception does not invalidate any other reasons why a work based on
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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// this file might be covered by the GNU General Public License.
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//
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//####ECOSGPLCOPYRIGHTEND####
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//=============================================================================
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//=============================================================================
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//#####DESCRIPTIONBEGIN####
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//#####DESCRIPTIONBEGIN####
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//
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//
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// Author(s): andrew.lunn
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// Author(s): andrew.lunn
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// Contributors:andrew.lunn, jskov
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// Contributors:andrew.lunn, jskov
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// Date: 2001-09-18
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// Date: 2001-09-18
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//
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//
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//####DESCRIPTIONEND####
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//####DESCRIPTIONEND####
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//
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//
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//=============================================================================
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//=============================================================================
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struct dns_header {
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struct dns_header {
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#if (CYG_BYTEORDER == CYG_LSBFIRST)
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#if (CYG_BYTEORDER == CYG_LSBFIRST)
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unsigned id :16; /* query identification number */
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unsigned id :16; /* query identification number */
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/* fields in third byte */
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/* fields in third byte */
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unsigned rd :1; /* recursion desired */
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unsigned rd :1; /* recursion desired */
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unsigned tc :1; /* truncated message */
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unsigned tc :1; /* truncated message */
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unsigned aa :1; /* authoritive answer */
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unsigned aa :1; /* authoritive answer */
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unsigned opcode :4; /* purpose of message */
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unsigned opcode :4; /* purpose of message */
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unsigned qr :1; /* response flag */
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unsigned qr :1; /* response flag */
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/* fields in fourth byte */
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/* fields in fourth byte */
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unsigned rcode :4; /* response code */
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unsigned rcode :4; /* response code */
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unsigned cd: 1; /* checking disabled by resolver */
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unsigned cd: 1; /* checking disabled by resolver */
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unsigned ad: 1; /* authentic data from named */
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unsigned ad: 1; /* authentic data from named */
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unsigned unused :1; /* unused bits */
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unsigned unused :1; /* unused bits */
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unsigned ra :1; /* recursion available */
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unsigned ra :1; /* recursion available */
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/* remaining bytes */
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/* remaining bytes */
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unsigned qdcount :16; /* number of question entries */
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unsigned qdcount :16; /* number of question entries */
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unsigned ancount :16; /* number of answer entries */
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unsigned ancount :16; /* number of answer entries */
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unsigned nscount :16; /* number of authority entries */
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unsigned nscount :16; /* number of authority entries */
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unsigned arcount :16; /* number of resource entries */
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unsigned arcount :16; /* number of resource entries */
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#else
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#else
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unsigned id :16; /* query identification number */
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unsigned id :16; /* query identification number */
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/* fields in third byte */
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/* fields in third byte */
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unsigned qr :1; /* response flag */
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unsigned qr :1; /* response flag */
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unsigned opcode :4; /* purpose of message */
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unsigned opcode :4; /* purpose of message */
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unsigned aa :1; /* authoritive answer */
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unsigned aa :1; /* authoritive answer */
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unsigned tc :1; /* truncated message */
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unsigned tc :1; /* truncated message */
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unsigned rd :1; /* recursion desired */
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unsigned rd :1; /* recursion desired */
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/* fields in fourth byte */
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/* fields in fourth byte */
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unsigned ra :1; /* recursion available */
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unsigned ra :1; /* recursion available */
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unsigned unused :1; /* unused bits */
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unsigned unused :1; /* unused bits */
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unsigned ad: 1; /* authentic data from named */
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unsigned ad: 1; /* authentic data from named */
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unsigned cd: 1; /* checking disabled by resolver */
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unsigned cd: 1; /* checking disabled by resolver */
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unsigned rcode :4; /* response code */
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unsigned rcode :4; /* response code */
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/* remaining bytes */
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/* remaining bytes */
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unsigned qdcount :16; /* number of question entries */
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unsigned qdcount :16; /* number of question entries */
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unsigned ancount :16; /* number of answer entries */
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unsigned ancount :16; /* number of answer entries */
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unsigned nscount :16; /* number of authority entries */
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unsigned nscount :16; /* number of authority entries */
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unsigned arcount :16; /* number of resource entries */
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unsigned arcount :16; /* number of resource entries */
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#endif
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#endif
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};
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};
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struct resource_record {
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struct resource_record {
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unsigned rr_type : 16; /* Type of resourse */
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unsigned rr_type : 16; /* Type of resourse */
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unsigned class : 16; /* Class of resource */
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unsigned class : 16; /* Class of resource */
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unsigned ttl : 32; /* Time to live of this record */
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unsigned ttl : 32; /* Time to live of this record */
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unsigned rdlength: 16; /* Lenght of data to follow */
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unsigned rdlength: 16; /* Lenght of data to follow */
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char rdata [2]; /* Resource DATA */
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char rdata [2]; /* Resource DATA */
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};
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};
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/* Opcodes */
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/* Opcodes */
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#define DNS_QUERY 0 /* Standard query */
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#define DNS_QUERY 0 /* Standard query */
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#define DNS_IQUERY 1 /* Inverse query */
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#define DNS_IQUERY 1 /* Inverse query */
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#define DNS_STATUS 2 /* Name server status */
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#define DNS_STATUS 2 /* Name server status */
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#define DNS_NOTIFY 4 /* Zone change notification */
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#define DNS_NOTIFY 4 /* Zone change notification */
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#define DNS_UPDATE 5 /* Zone update message */
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#define DNS_UPDATE 5 /* Zone update message */
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/* DNS TYPEs */
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/* DNS TYPEs */
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#define DNS_TYPE_A 1 /* Host address */
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#define DNS_TYPE_A 1 /* Host address */
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#define DNS_TYPE_NS 2 /* Authoritative name server */
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#define DNS_TYPE_NS 2 /* Authoritative name server */
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#define DNS_TYPE_CNAME 5 /* Canonical name for an alias */
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#define DNS_TYPE_CNAME 5 /* Canonical name for an alias */
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#define DNS_TYPE_PTR 12 /* Domain name pointer */
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#define DNS_TYPE_PTR 12 /* Domain name pointer */
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/* DNS CLASSs */
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/* DNS CLASSs */
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#define DNS_CLASS_IN 1 /* Internet */
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#define DNS_CLASS_IN 1 /* Internet */
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/* DNS reply codes */
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/* DNS reply codes */
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#define DNS_REPLY_NOERR 0
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#define DNS_REPLY_NOERR 0
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#define DNS_REPLY_NAME_ERROR 3
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#define DNS_REPLY_NAME_ERROR 3
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#define MAXDNSMSGSIZE 512
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#define MAXDNSMSGSIZE 512
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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#endif // CYGONCE_NS_DNS_DNS_PRIV_H
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#endif // CYGONCE_NS_DNS_DNS_PRIV_H
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// End of dns-priv.h
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// End of dns-priv.h
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