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/opentcp/include/inet/dns/dns.h

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00001 /*
00002  *Copyright (c) 2000-2002 Viola Systems Ltd.
00003  *All rights reserved.
00004  *
00005  *Redistribution and use in source and binary forms, with or without 
00006  *modification, are permitted provided that the following conditions 
00007  *are met:
00008  *
00009  *1. Redistributions of source code must retain the above copyright 
00010  *notice, this list of conditions and the following disclaimer.
00011  *
00012  *2. Redistributions in binary form must reproduce the above copyright 
00013  *notice, this list of conditions and the following disclaimer in the 
00014  *documentation and/or other materials provided with the distribution.
00015  *
00016  *3. The end-user documentation included with the redistribution, if 
00017  *any, must include the following acknowledgment:
00018  *      "This product includes software developed by Viola 
00019  *      Systems (http://www.violasystems.com/)."
00020  *
00021  *Alternately, this acknowledgment may appear in the software itself, 
00022  *if and wherever such third-party acknowledgments normally appear.
00023  *
00024  *4. The names "OpenTCP" and "Viola Systems" must not be used to 
00025  *endorse or promote products derived from this software without prior 
00026  *written permission. For written permission, please contact 
00027  *opentcp@opentcp.org.
00028  *
00029  *5. Products derived from this software may not be called "OpenTCP", 
00030  *nor may "OpenTCP" appear in their name, without prior written 
00031  *permission of the Viola Systems Ltd.
00032  *
00033  *THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED 
00034  *WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
00035  *MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
00036  *IN NO EVENT SHALL VIOLA SYSTEMS LTD. OR ITS CONTRIBUTORS BE LIABLE 
00037  *FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
00038  *CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
00039  *SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
00040  *BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
00041  *WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
00042  *OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
00043  *EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00044  *====================================================================
00045  *
00046  *OpenTCP is the unified open source TCP/IP stack available on a series 
00047  *of 8/16-bit microcontrollers, please see <http://www.opentcp.org>.
00048  *
00049  *For more information on how to network-enable your devices, or how to 
00050  *obtain commercial technical support for OpenTCP, please see 
00051  *<http://www.violasystems.com/>.
00052  */
00053 
00063 #ifndef INCLUDE_DNS_H
00064 #define INCLUDE_DNS_H
00065 
00066 #include <inet/datatypes.h>
00067 
00068 
00069 #define DNS_UDP_PORT    53      
00073 #define DNS_SERVER_IP   0xac100201  
00075 #define DNS_RESEND_PERIOD       2                       
00078 #define DNS_NUM_RETRIES         5                       
00083 /* Events for event listener */
00084 #define DNS_EVENT_ERROR                         0       
00087 #define DNS_EVENT_SUCCESS                       1       
00092 /* First five errors (from RFC1035) which we transfer to event listener 
00093         plus a couple of our own
00094 */
00095 #define DNS_ERROR_FORMAT                        1       
00098 #define DNS_ERROR_SERVER_FAILURE        2       
00103 #define DNS_ERROR_NAME_ERROR            3       
00110 #define DNS_ERROR_NOT_IMPLEMENTED       4       
00114 #define DNS_ERROR_REFUSED                       5       
00118 /* code 6-15 reserved for future use */
00119 #define DNS_ERROR_TIMEOUT                       16      
00124 #define DNS_ERROR_GENERAL                       17      
00129 /* Error codes returned from get_host_by_name(): */
00130 /* Other error codes (besides those listed below) are:          
00131         -1 - general error
00132         -2 - arp not ready
00133         -3 - socket handle error
00134 */
00135 #define DNS_ERROR_BUSY          -4      
00140 #define DNS_ERROR_LABEL         -5      
00144 #define DNS_ERROR_NAME          -6      
00147 #define DNS_ERROR_OVERFLOW      -7      
00152 UINT8 get_host_by_name(UINT8 *host_name_ptr,void (*listener)(UINT8 , UINT32 ));
00153 
00154 void dns_init(void);
00155 
00156 void dns_run(void);
00157 
00158 INT32 dns_eventlistener(INT8 , UINT8 , UINT32 , UINT16 , UINT16 , UINT16);
00159 
00160 #endif

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