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