|
||||
Warning, cross-references for /kernel/include/lwip/dns.h need to be fixed.
0001 /** 0002 * lwip DNS resolver header file. 0003 0004 * Author: Jim Pettinato 0005 * April 2007 0006 0007 * ported from uIP resolv.c Copyright (c) 2002-2003, Adam Dunkels. 0008 * 0009 * Redistribution and use in source and binary forms, with or without 0010 * modification, are permitted provided that the following conditions 0011 * are met: 0012 * 1. Redistributions of source code must retain the above copyright 0013 * notice, this list of conditions and the following disclaimer. 0014 * 2. Redistributions in binary form must reproduce the above copyright 0015 * notice, this list of conditions and the following disclaimer in the 0016 * documentation and/or other materials provided with the distribution. 0017 * 3. The name of the author may not be used to endorse or promote 0018 * products derived from this software without specific prior 0019 * written permission. 0020 * 0021 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 0022 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 0023 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 0024 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 0025 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 0026 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 0027 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 0028 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 0029 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 0030 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 0031 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0032 */ 0033 0034 #ifndef __LWIP_DNS_H__ 0035 #define __LWIP_DNS_H__ 0036 0037 #include "lwip/opt.h" 0038 0039 #if LWIP_DNS /* don't build if not configured for use in lwipopts.h */ 0040 0041 /** DNS timer period */ 0042 #define DNS_TMR_INTERVAL 1000 0043 0044 /** DNS field TYPE used for "Resource Records" */ 0045 #define DNS_RRTYPE_A 1 /* a host address */ 0046 #define DNS_RRTYPE_NS 2 /* an authoritative name server */ 0047 #define DNS_RRTYPE_MD 3 /* a mail destination (Obsolete - use MX) */ 0048 #define DNS_RRTYPE_MF 4 /* a mail forwarder (Obsolete - use MX) */ 0049 #define DNS_RRTYPE_CNAME 5 /* the canonical name for an alias */ 0050 #define DNS_RRTYPE_SOA 6 /* marks the start of a zone of authority */ 0051 #define DNS_RRTYPE_MB 7 /* a mailbox domain name (EXPERIMENTAL) */ 0052 #define DNS_RRTYPE_MG 8 /* a mail group member (EXPERIMENTAL) */ 0053 #define DNS_RRTYPE_MR 9 /* a mail rename domain name (EXPERIMENTAL) */ 0054 #define DNS_RRTYPE_NULL 10 /* a null RR (EXPERIMENTAL) */ 0055 #define DNS_RRTYPE_WKS 11 /* a well known service description */ 0056 #define DNS_RRTYPE_PTR 12 /* a domain name pointer */ 0057 #define DNS_RRTYPE_HINFO 13 /* host information */ 0058 #define DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */ 0059 #define DNS_RRTYPE_MX 15 /* mail exchange */ 0060 #define DNS_RRTYPE_TXT 16 /* text strings */ 0061 0062 /** DNS field CLASS used for "Resource Records" */ 0063 #define DNS_RRCLASS_IN 1 /* the Internet */ 0064 #define DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */ 0065 #define DNS_RRCLASS_CH 3 /* the CHAOS class */ 0066 #define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */ 0067 #define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */ 0068 0069 /** Callback which is invoked when a hostname is found. 0070 * A function of this type must be implemented by the application using the DNS resolver. 0071 * @param name pointer to the name that was looked up. 0072 * @param ipaddr pointer to a struct ip_addr containing the IP address of the hostname, 0073 * or NULL if the name could not be found (or on any other error). 0074 * @param callback_arg a user-specified callback argument passed to dns_gethostbyname 0075 */ 0076 typedef void (*dns_found_callback)(const char *name, struct ip_addr *ipaddr, void *callback_arg); 0077 0078 0079 void dns_init(void); 0080 0081 void dns_tmr(void); 0082 0083 void dns_setserver(u8_t numdns, struct ip_addr *dnsserver); 0084 0085 struct ip_addr dns_getserver(u8_t numdns); 0086 0087 err_t dns_gethostbyname(const char *hostname, struct ip_addr *addr, 0088 dns_found_callback found, void *callback_arg); 0089 0090 #if DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC 0091 int dns_local_removehost(const char *hostname, const struct ip_addr *addr); 0092 err_t dns_local_addhost(const char *hostname, const struct ip_addr *addr); 0093 #endif /* DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC */ 0094 0095 #endif /* LWIP_DNS */ 0096 0097 #endif /* __LWIP_DNS_H__ */
[ Source navigation ] | [ Diff markup ] | [ Identifier search ] | [ general search ] |
This page was automatically generated by the 1.2.0 LXR engine. |