199 lines
6.6 KiB
C
199 lines
6.6 KiB
C
/****************************************************************************
|
|
* apps/include/netutils/dnsclient.h
|
|
* DNS resolver code header file.
|
|
* Author Adam Dunkels <adam@dunkels.com>
|
|
*
|
|
* Copyright (C) 2007-2009, 2011-2012, 2014 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Inspired by/based on uIP logic by Adam Dunkels:
|
|
*
|
|
* Copyright (c) 2002-2003, Adam Dunkels.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __APPS_INCLUDE_NETUTILS_DNSCLIENT_H
|
|
#define __APPS_INCLUDE_NETUTILS_DNSCLIENT_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/net/netconfig.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dns_bind_sock
|
|
*
|
|
* Description:
|
|
* Initialize the DNS resolver using the caller provided socket.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_bind_sock(FAR int *sockfd);
|
|
|
|
/****************************************************************************
|
|
* Name: dns_bind
|
|
*
|
|
* Description:
|
|
* Initialize the DNS resolver using an internal, share-able socket.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_bind(void);
|
|
|
|
/****************************************************************************
|
|
* Name: dns_free_sock
|
|
*
|
|
* Description:
|
|
* Release the DNS resolver by closing the socket.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_free_sock(FAR int *sockfd);
|
|
|
|
/****************************************************************************
|
|
* Name: dns_query_sock
|
|
*
|
|
* Description:
|
|
* Using the DNS resolver socket (sockfd), look up the the 'hostname', and
|
|
* return its IP address in 'ipaddr'
|
|
*
|
|
* Returned Value:
|
|
* Returns zero (OK) if the query was successful.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_query_sock(int sockfd, FAR const char *hostname, FAR in_addr_t *ipaddr);
|
|
|
|
/****************************************************************************
|
|
* Name: dns_query
|
|
*
|
|
* Description:
|
|
* Using the internal DNS resolver socket, look up the the 'hostname', and
|
|
* return its IP address in 'ipaddr'
|
|
*
|
|
* Returned Value:
|
|
* Returns zero (OK) if the query was successful.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_query(FAR const char *hostname, FAR in_addr_t *ipaddr);
|
|
|
|
/****************************************************************************
|
|
* Name: dns_setserver
|
|
*
|
|
* Description:
|
|
* Configure which DNS server to use for queries
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IPv6
|
|
void dns_setserver(FAR const struct in6_addr *dnsserver);
|
|
#else
|
|
void dns_setserver(FAR const struct in_addr *dnsserver);
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dns_getserver
|
|
*
|
|
* Description:
|
|
* Obtain the currently configured DNS server.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IPv6
|
|
void dns_getserver(FAR const struct in_addr *dnsserver);
|
|
#else
|
|
void dns_getserver(FAR struct in_addr *dnsserver);
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dns_whois_socket
|
|
*
|
|
* Description:
|
|
* Get the binding for 'name' using the DNS server accessed via 'sockfd'
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IPv6
|
|
int dns_whois_socket(int sockfd, FAR const char *name,
|
|
FAR struct sockaddr_in6 *addr);
|
|
#else
|
|
int dns_whois_socket(int sockfd, FAR const char *name,
|
|
FAR struct sockaddr_in *addr);
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dns_whois
|
|
*
|
|
* Description:
|
|
* Get the binding for 'name' using the DNS server accessed via the DNS
|
|
* resolvers internal socket.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NET_IPv6
|
|
int dns_whois(FAR const char *name, FAR struct sockaddr_in6 *addr);
|
|
#else
|
|
int dns_whois(FAR const char *name, FAR struct sockaddr_in *addr);
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: dns_gethostip
|
|
*
|
|
* Descriptions:
|
|
* Combines the operations of dns_bind_sock(), dns_query_sock(), and
|
|
* dns_free_sock() to obtain the the IP address ('ipaddr') associated with
|
|
* the 'hostname' in one operation.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int dns_gethostip(FAR const char *hostname, FAR in_addr_t *ipaddr);
|
|
|
|
#undef EXTERN
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* __APPS_INCLUDE_NETUTILS_DNSCLIENT_H */
|