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https://github.com/lwip-tcpip/lwip.git
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Moved lwip_gethostbyname from sockets.c to the new file netdb.c; included lwip_getaddrinfo.
This commit is contained in:
goldsimon
parent
32a09370e1
commit
c86b446d4c
@ -19,6 +19,10 @@ HISTORY
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++ New features:
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++ New features:
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2007-11-24 Simon Goldschmidt
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* netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
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to the new file netdb.c; included lwip_getaddrinfo.
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2007-11-21 Simon Goldschmidt
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2007-11-21 Simon Goldschmidt
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* tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
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* tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
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based on the MTU of the netif used to send. Enabled by default. Disable by
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based on the MTU of the netif used to send. Enabled by default. Disable by
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334
src/api/netdb.c
Normal file
334
src/api/netdb.c
Normal file
@ -0,0 +1,334 @@
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/**
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* @file
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* API functions for name resolving
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*
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*/
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/*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Simon Goldschmidt
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*
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*/
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#include "lwip/netdb.h"
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#if LWIP_DNS && LWIP_SOCKET
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#include "lwip/err.h"
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#include "lwip/mem.h"
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#include "lwip/ip_addr.h"
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#include "lwip/api.h"
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/** helper struct for gethostbyname_r to access the char* buffer */
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struct gethostbyname_r_helper {
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struct ip_addr *addrs;
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struct ip_addr addr;
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char *aliases;
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};
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/** h_errno is exported in netdb.h for access by applications. */
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#if LWIP_DNS_API_DECLARE_H_ERRNO
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int h_errno;
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#endif /* LWIP_DNS_API_DECLARE_H_ERRNO */
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/* static buffer variables for lwip_gethostbyname() */
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static struct hostent s_hostent;
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static char *s_aliases;
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static struct ip_addr s_hostent_addr;
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static struct ip_addr *s_phostent_addr;
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/**
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* Returns an entry containing addresses of address family AF_INET
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* for the host with name name.
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* Due to dns_gethostbyname limitations, only one address is returned.
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*
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* @param name the hostname to resolve
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* @return an entry containing addresses of address family AF_INET
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* for the host with name name
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*/
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struct hostent*
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lwip_gethostbyname(const char *name)
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{
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err_t err;
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struct ip_addr addr;
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/* query host IP address */
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err = netconn_gethostbyname(name, &addr);
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if (err != ERR_OK) {
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LWIP_DEBUGF(DNS_DEBUG, ("lwip_gethostbyname(%s) failed, err=%d\n", name, err));
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h_errno = HOST_NOT_FOUND;
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return NULL;
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}
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/* fill hostent */
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s_hostent_addr = addr;
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s_phostent_addr = &s_hostent_addr;
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s_hostent.h_name = (char*)name;
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s_hostent.h_aliases = &s_aliases;
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s_hostent.h_addrtype = AF_INET;
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s_hostent.h_length = sizeof(struct ip_addr);
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s_hostent.h_addr_list = (char**)&s_phostent_addr;
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#if DNS_DEBUG
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/* dump hostent */
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_name == %s\n", s_hostent.h_name));
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases == 0x%08lX\n",(u32_t)(s_hostent.h_aliases)));
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if (s_hostent.h_aliases != NULL) {
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u8_t idx;
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for ( idx=0; s_hostent.h_aliases[idx]; idx++) {
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases[%i]-> == 0x%08lX\n", idx, s_hostent.h_aliases[idx]));
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases[%i]-> == %s\n", idx, s_hostent.h_aliases[idx]));
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}
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}
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addrtype == %lu\n", (u32_t)(s_hostent.h_addrtype)));
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_length == %lu\n", (u32_t)(s_hostent.h_length)));
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list == 0x%08lX\n", s_hostent.h_addr_list));
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if (s_hostent.h_addr_list != NULL) {
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u8_t idx;
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for ( idx=0; s_hostent.h_addr_list[idx]; idx++) {
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list[%i] == 0x%08lX\n", idx, s_hostent.h_addr_list[idx]));
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LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list[%i]-> == %s\n", idx, inet_ntoa(*((struct in_addr*)(s_hostent.h_addr_list[idx])))));
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}
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}
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#endif /* DNS_DEBUG */
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return &s_hostent;
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}
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/**
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* Thread-safe variant of lwip_gethostbyname: instead of using a static
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* buffer, this function takes buffer and errno pointers as arguments
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* and uses these for the result.
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*
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* @param name the hostname to resolve
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* @param ret pre-allocated struct where to store the result
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* @param buf pre-allocated buffer where to store additional data
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* @param buflen the size of buf
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* @param result pointer to a hostent pointer that is set to ret on success
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* and set to zero on error
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* @param h_errnop pointer to an int where to store errors (instead of modifying
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* the global h_errno)
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* @return 0 on success, non-zero on error, additional error information
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* is stored in *h_errnop instead of h_errno to be thread-safe
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*/
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int
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lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
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size_t buflen, struct hostent **result, int *h_errnop)
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{
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err_t err;
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struct gethostbyname_r_helper *h;
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char *hostname;
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size_t namelen;
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int lh_errno;
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if (h_errnop == NULL) {
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/* ensure h_errnop is never NULL */
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h_errnop = &lh_errno;
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}
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if (result == NULL) {
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/* not all arguments given */
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*h_errnop = EINVAL;
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return -1;
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}
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/* first thing to do: set *result to nothing */
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*result = NULL;
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if ((name == NULL) || (ret == NULL) || (buf == 0)) {
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/* not all arguments given */
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*h_errnop = EINVAL;
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return -1;
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}
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namelen = strlen(name);
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if (buflen < (sizeof(struct gethostbyname_r_helper) + namelen + 1 + (MEM_ALIGNMENT - 1))) {
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/* buf can't hold the data needed + a copy of name */
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*h_errnop = ERANGE;
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return -1;
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}
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h = (struct gethostbyname_r_helper*)LWIP_MEM_ALIGN(buf);
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hostname = ((char*)h) + sizeof(struct gethostbyname_r_helper);
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/* query host IP address */
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err = netconn_gethostbyname(name, &(h->addr));
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if (err != ERR_OK) {
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LWIP_DEBUGF(DNS_DEBUG, ("lwip_gethostbyname(%s) failed, err=%d\n", name, err));
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*h_errnop = ENSRNOTFOUND;
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return -1;
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}
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/* copy the hostname into buf */
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memcpy(hostname, name, namelen);
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hostname[namelen] = 0;
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/* fill hostent */
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h->addrs = &(h->addr);
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h->aliases = NULL;
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ret->h_name = (char*)hostname;
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ret->h_aliases = &(h->aliases);
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ret->h_addrtype = AF_INET;
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ret->h_length = sizeof(struct ip_addr);
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ret->h_addr_list = (char**)&(h->addrs);
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/* set result != NULL */
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*result = ret;
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/* return success */
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return 0;
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}
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/**
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* Frees one or more addrinfo structures returned by getaddrinfo(), along with
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* any additional storage associated with those structures. If the ai_next field
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* of the structure is not null, the entire list of structures is freed.
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*
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* @param ai struct addrinfo to free
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*/
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void
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lwip_freeaddrinfo(struct addrinfo *ai)
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{
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struct addrinfo *next;
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while (ai != NULL) {
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if (ai->ai_addr != NULL) {
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mem_free(ai->ai_addr);
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}
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if (ai->ai_canonname != NULL) {
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mem_free(ai->ai_canonname);
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}
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next = ai->ai_next;
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mem_free(ai);
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ai = next;
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}
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}
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/**
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* Translates the name of a service location (for example, a host name) and/or
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* a service name and returns a set of socket addresses and associated
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* information to be used in creating a socket with which to address the
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* specified service.
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* Memory for the result is allocated internally and must be freed by calling
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* lwip_freeaddrinfo()!
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*
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* Due to a limitation in dns_gethostbyname, only the first address of a
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* host is returned.
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* Also, service names are not supported (only port numbers)!
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*
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* @param nodename descriptive name or address string of the host
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* (may be NULL -> local address)
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* @param servname port number as string of NULL
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* @param hints structure containing input values that set socktype and protocol
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* @param res pointer to a pointer where to store the result (set to NULL on failure)
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* @return 0 on success, non-zero on failure
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*/
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int
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lwip_getaddrinfo(const char *nodename, const char *servname,
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const struct addrinfo *hints, struct addrinfo **res)
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{
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err_t err;
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struct ip_addr addr;
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struct addrinfo *ai;
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struct sockaddr_in *sa;
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int port_nr = 0;
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if (res == NULL) {
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return EAI_FAIL;
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}
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*res = NULL;
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if ((nodename == NULL) && (servname == NULL)) {
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return EAI_NONAME;
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}
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if (servname != NULL) {
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/* service name specified: convert to port number
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* @todo?: currently, only ASCII integers (port numbers) are supported! */
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port_nr = atoi(servname);
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if ((port_nr <= 0) || (port_nr > 0xffff)) {
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return EAI_SERVICE;
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}
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}
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if (nodename != NULL) {
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/* service location specified, try to resolve */
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err = netconn_gethostbyname(nodename, &addr);
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if (err != ERR_OK) {
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return EAI_FAIL;
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}
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} else {
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/* service location specified, use loopback address */
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addr.addr = INADDR_LOOPBACK;
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}
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ai = mem_malloc(sizeof(struct addrinfo));
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if (ai == NULL) {
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goto memerr;
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}
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memset(ai, 0, sizeof(struct addrinfo));
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sa = mem_malloc(sizeof(struct sockaddr_in));
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if (sa == NULL) {
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goto memerr;
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}
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memset(sa, 0, sizeof(struct sockaddr_in));
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/* set up sockaddr */
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sa->sin_addr.s_addr = addr.addr;
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sa->sin_family = AF_INET;
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sa->sin_len = sizeof(struct sockaddr_in);
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sa->sin_port = htons(port_nr);
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|
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/* set up addrinfo */
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ai->ai_family = AF_INET;
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if (hints != NULL) {
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/* copy socktype & protocol from hints if specified */
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ai->ai_socktype = hints->ai_socktype;
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ai->ai_protocol = hints->ai_protocol;
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|
}
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if (nodename != NULL) {
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/* copy nodename to canonname if specified */
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size_t namelen = strlen(nodename);
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ai->ai_canonname = mem_malloc(namelen + 1);
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|
if (ai->ai_canonname == NULL) {
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|
goto memerr;
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|
}
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memcpy(ai->ai_canonname, nodename, namelen);
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ai->ai_canonname[namelen] = 0;
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|
}
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|
ai->ai_addrlen = sizeof(struct sockaddr_in);
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ai->ai_addr = (struct sockaddr*)sa;
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|
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*res = ai;
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|
return 0;
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|
memerr:
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|
if (ai != NULL) {
|
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|
mem_free(ai);
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|
}
|
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|
if (sa != NULL) {
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mem_free(sa);
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||||||
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}
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return EAI_MEMORY;
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||||||
|
}
|
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|
|
||||||
|
#endif /* LWIP_DNS && LWIP_SOCKET */
|
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@ -86,14 +86,6 @@ struct lwip_setgetsockopt_data {
|
|||||||
err_t err;
|
err_t err;
|
||||||
};
|
};
|
||||||
|
|
||||||
#if LWIP_DNS
|
|
||||||
struct gethostbyname_r_helper {
|
|
||||||
struct ip_addr *addrs;
|
|
||||||
struct ip_addr addr;
|
|
||||||
char *aliases;
|
|
||||||
};
|
|
||||||
#endif /* LWIP_DNS */
|
|
||||||
|
|
||||||
static struct lwip_socket sockets[NUM_SOCKETS];
|
static struct lwip_socket sockets[NUM_SOCKETS];
|
||||||
static struct lwip_select_cb *select_cb_list;
|
static struct lwip_select_cb *select_cb_list;
|
||||||
|
|
||||||
@ -104,13 +96,6 @@ static void event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len
|
|||||||
static void lwip_getsockopt_internal(void *arg);
|
static void lwip_getsockopt_internal(void *arg);
|
||||||
static void lwip_setsockopt_internal(void *arg);
|
static void lwip_setsockopt_internal(void *arg);
|
||||||
|
|
||||||
#if LWIP_DNS
|
|
||||||
static struct hostent s_hostent;
|
|
||||||
static char *s_aliases;
|
|
||||||
static struct ip_addr s_hostent_addr;
|
|
||||||
static struct ip_addr *s_phostent_addr;
|
|
||||||
#endif /* LWIP_DNS */
|
|
||||||
|
|
||||||
static const int err_to_errno_table[] = {
|
static const int err_to_errno_table[] = {
|
||||||
0, /* ERR_OK 0 No error, everything OK. */
|
0, /* ERR_OK 0 No error, everything OK. */
|
||||||
ENOMEM, /* ERR_MEM -1 Out of memory error. */
|
ENOMEM, /* ERR_MEM -1 Out of memory error. */
|
||||||
@ -1810,139 +1795,4 @@ lwip_ioctl(int s, long cmd, void *argp)
|
|||||||
} /* switch (cmd) */
|
} /* switch (cmd) */
|
||||||
}
|
}
|
||||||
|
|
||||||
#if LWIP_DNS
|
|
||||||
static void
|
|
||||||
lwip_fill_hostent(struct hostent *he, char *name, struct ip_addr **addr, char **aliases)
|
|
||||||
{
|
|
||||||
he->h_name = name;
|
|
||||||
he->h_aliases = aliases;
|
|
||||||
he->h_addrtype = AF_INET;
|
|
||||||
he->h_length = sizeof(struct ip_addr);
|
|
||||||
he->h_addr_list = (char**)addr;
|
|
||||||
}
|
|
||||||
|
|
||||||
struct hostent*
|
|
||||||
lwip_gethostbyname(const char *name)
|
|
||||||
{
|
|
||||||
err_t err;
|
|
||||||
struct ip_addr addr;
|
|
||||||
|
|
||||||
/* query host IP address */
|
|
||||||
err = netconn_gethostbyname(name, &addr);
|
|
||||||
if (err != ERR_OK) {
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("lwip_gethostbyname(%s) failed, err=%d\n", name, err));
|
|
||||||
switch(err) {
|
|
||||||
case ERR_MEM:
|
|
||||||
set_errno(ENOMEM);
|
|
||||||
break;
|
|
||||||
case ERR_ARG:
|
|
||||||
set_errno(EINVAL);
|
|
||||||
break;
|
|
||||||
/* case ERR_VAL: */
|
|
||||||
default:
|
|
||||||
set_errno(ENSRNOTFOUND);
|
|
||||||
}
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* fill hostent */
|
|
||||||
s_hostent_addr = addr;
|
|
||||||
s_phostent_addr = &s_hostent_addr;
|
|
||||||
s_hostent.h_name = (char*)name;
|
|
||||||
s_hostent.h_aliases = &s_aliases;
|
|
||||||
s_hostent.h_addrtype = AF_INET;
|
|
||||||
s_hostent.h_length = sizeof(struct ip_addr);
|
|
||||||
s_hostent.h_addr_list = (char**)&s_phostent_addr;
|
|
||||||
|
|
||||||
#if DNS_DEBUG
|
|
||||||
/* dump hostent */
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_name == %s\n", s_hostent.h_name));
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases == 0x%08lX\n",(u32_t)(s_hostent.h_aliases)));
|
|
||||||
if (s_hostent.h_aliases != NULL) {
|
|
||||||
u8_t idx;
|
|
||||||
for ( idx=0; s_hostent.h_aliases[idx]; idx++) {
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases[%i]-> == 0x%08lX\n", idx, s_hostent.h_aliases[idx]));
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_aliases[%i]-> == %s\n", idx, s_hostent.h_aliases[idx]));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addrtype == %lu\n", (u32_t)(s_hostent.h_addrtype)));
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_length == %lu\n", (u32_t)(s_hostent.h_length)));
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list == 0x%08lX\n", s_hostent.h_addr_list));
|
|
||||||
if (s_hostent.h_addr_list != NULL) {
|
|
||||||
u8_t idx;
|
|
||||||
for ( idx=0; s_hostent.h_addr_list[idx]; idx++) {
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list[%i] == 0x%08lX\n", idx, s_hostent.h_addr_list[idx]));
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("hostent.h_addr_list[%i]-> == %s\n", idx, inet_ntoa(*((struct in_addr*)(s_hostent.h_addr_list[idx])))));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
#endif /* DNS_DEBUG */
|
|
||||||
|
|
||||||
return &s_hostent;
|
|
||||||
}
|
|
||||||
|
|
||||||
int
|
|
||||||
lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
|
|
||||||
size_t buflen, struct hostent **result, int *h_errnop)
|
|
||||||
{
|
|
||||||
err_t err;
|
|
||||||
struct gethostbyname_r_helper *h;
|
|
||||||
char *hostname;
|
|
||||||
size_t namelen;
|
|
||||||
|
|
||||||
if (result == NULL) {
|
|
||||||
/* not all arguments given */
|
|
||||||
return EINVAL;
|
|
||||||
}
|
|
||||||
/* first thing to do: set *result to nothing */
|
|
||||||
*result = NULL;
|
|
||||||
if ((name == NULL) || (ret == NULL) || (buf == 0)) {
|
|
||||||
/* not all arguments given */
|
|
||||||
return EINVAL;
|
|
||||||
}
|
|
||||||
|
|
||||||
namelen = strlen(name);
|
|
||||||
if (buflen < (sizeof(struct gethostbyname_r_helper) + namelen + 1 + (MEM_ALIGNMENT - 1))) {
|
|
||||||
/* buf can't hold the data needed + a copy of name */
|
|
||||||
return ERANGE;
|
|
||||||
}
|
|
||||||
|
|
||||||
h = (struct gethostbyname_r_helper*)LWIP_MEM_ALIGN(buf);
|
|
||||||
hostname = ((char*)h) + sizeof(struct gethostbyname_r_helper);
|
|
||||||
|
|
||||||
/* query host IP address */
|
|
||||||
err = netconn_gethostbyname(name, &(h->addr));
|
|
||||||
if (err != ERR_OK) {
|
|
||||||
LWIP_DEBUGF(DNS_DEBUG, ("lwip_gethostbyname(%s) failed, err=%d\n", name, err));
|
|
||||||
switch(err) {
|
|
||||||
case ERR_MEM:
|
|
||||||
return ENOMEM;
|
|
||||||
case ERR_ARG:
|
|
||||||
return EINVAL;
|
|
||||||
/* case ERR_VAL: */
|
|
||||||
default:
|
|
||||||
return ENSRNOTFOUND;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* copy the hostname into buf */
|
|
||||||
memcpy(hostname, name, namelen);
|
|
||||||
hostname[namelen] = 0;
|
|
||||||
|
|
||||||
/* fill hostent */
|
|
||||||
h->addrs = &(h->addr);
|
|
||||||
h->aliases = NULL;
|
|
||||||
ret->h_name = (char*)hostname;
|
|
||||||
ret->h_aliases = &(h->aliases);
|
|
||||||
ret->h_addrtype = AF_INET;
|
|
||||||
ret->h_length = sizeof(struct ip_addr);
|
|
||||||
ret->h_addr_list = (char**)&(h->addrs);
|
|
||||||
|
|
||||||
/* set result != NULL */
|
|
||||||
*result = ret;
|
|
||||||
|
|
||||||
/* return success */
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
#endif /* LWIP_DNS*/
|
|
||||||
|
|
||||||
#endif /* LWIP_SOCKET */
|
#endif /* LWIP_SOCKET */
|
||||||
|
|||||||
109
src/include/lwip/netdb.h
Normal file
109
src/include/lwip/netdb.h
Normal file
@ -0,0 +1,109 @@
|
|||||||
|
/*
|
||||||
|
* 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.
|
||||||
|
*
|
||||||
|
* This file is part of the lwIP TCP/IP stack.
|
||||||
|
*
|
||||||
|
* Author: Simon Goldschmidt
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "lwip/opt.h"
|
||||||
|
|
||||||
|
#if LWIP_DNS && LWIP_SOCKET
|
||||||
|
|
||||||
|
#include "lwip/sockets.h"
|
||||||
|
|
||||||
|
/* some rarely used options */
|
||||||
|
#ifndef LWIP_DNS_API_DECLARE_H_ERRNO
|
||||||
|
#define LWIP_DNS_API_DECLARE_H_ERRNO 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef LWIP_DNS_API_DEFINE_ERRORS
|
||||||
|
#define LWIP_DNS_API_DEFINE_ERRORS 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef LWIP_DNS_API_DECLARE_STRUCTS
|
||||||
|
#define LWIP_DNS_API_DECLARE_STRUCTS 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if LWIP_DNS_API_DEFINE_ERRORS
|
||||||
|
/** Errors used by the DNS API functions, h_errno can be one of them */
|
||||||
|
#define EAI_NONAME 200
|
||||||
|
#define EAI_SERVICE 201
|
||||||
|
#define EAI_FAIL 202
|
||||||
|
#define EAI_MEMORY 203
|
||||||
|
|
||||||
|
#define HOST_NOT_FOUND 210
|
||||||
|
#define NO_DATA 211
|
||||||
|
#define NO_RECOVERY 212
|
||||||
|
#define TRY_AGAIN 213
|
||||||
|
#endif /* LWIP_DNS_API_DEFINE_ERRORS */
|
||||||
|
|
||||||
|
#if LWIP_DNS_API_DECLARE_STRUCTS
|
||||||
|
struct hostent {
|
||||||
|
char *h_name; /* Official name of the host. */
|
||||||
|
char **h_aliases; /* A pointer to an array of pointers to alternative host names,
|
||||||
|
terminated by a null pointer. */
|
||||||
|
int h_addrtype; /* Address type. */
|
||||||
|
int h_length; /* The length, in bytes, of the address. */
|
||||||
|
char **h_addr_list; /* A pointer to an array of pointers to network addresses (in
|
||||||
|
network byte order) for the host, terminated by a null pointer. */
|
||||||
|
#define h_addr h_addr_list[0] /* for backward compatibility */
|
||||||
|
};
|
||||||
|
|
||||||
|
struct addrinfo {
|
||||||
|
int ai_flags; /* Input flags. */
|
||||||
|
int ai_family; /* Address family of socket. */
|
||||||
|
int ai_socktype; /* Socket type. */
|
||||||
|
int ai_protocol; /* Protocol of socket. */
|
||||||
|
socklen_t ai_addrlen; /* Length of socket address. */
|
||||||
|
struct sockaddr *ai_addr; /* Socket address of socket. */
|
||||||
|
char *ai_canonname; /* Canonical name of service location. */
|
||||||
|
struct addrinfo *ai_next; /* Pointer to next in list. */
|
||||||
|
};
|
||||||
|
#endif /* LWIP_DNS_API_DECLARE_STRUCTS */
|
||||||
|
|
||||||
|
#if LWIP_DNS_API_DECLARE_H_ERRNO
|
||||||
|
/* application accessable error code set by the DNS API functions */
|
||||||
|
extern int h_errno;
|
||||||
|
#endif /* LWIP_DNS_API_DECLARE_H_ERRNO*/
|
||||||
|
|
||||||
|
struct hostent *lwip_gethostbyname(const char *name);
|
||||||
|
int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
|
||||||
|
size_t buflen, struct hostent **result, int *h_errnop);
|
||||||
|
void lwip_freeaddrinfo(struct addrinfo *ai);
|
||||||
|
int lwip_getaddrinfo(const char *nodename,
|
||||||
|
const char *servname,
|
||||||
|
const struct addrinfo *hints,
|
||||||
|
struct addrinfo **res);
|
||||||
|
|
||||||
|
#if LWIP_COMPAT_SOCKETS
|
||||||
|
#define gethostbyname(name) lwip_gethostbyname(name)
|
||||||
|
#define gethostbyname_r(name, ret, buf, buflen, result, h_errnop) \
|
||||||
|
lwip_gethostbyname_r(name, ret, buf, buflen, result, h_errnop)
|
||||||
|
#define freeaddrinfo(addrinfo) lwip_freeaddrinfo(a)
|
||||||
|
#define getaddrinfo(nodname, servname, hints, res) \
|
||||||
|
lwip_getaddrinfo(nodname, servname, hints, res)
|
||||||
|
#endif /* LWIP_COMPAT_SOCKETS */
|
||||||
|
|
||||||
|
#endif /* LWIP_DNS && LWIP_SOCKET */
|
||||||
@ -60,19 +60,6 @@ struct sockaddr {
|
|||||||
char sa_data[14];
|
char sa_data[14];
|
||||||
};
|
};
|
||||||
|
|
||||||
#if LWIP_DNS
|
|
||||||
struct hostent {
|
|
||||||
char *h_name; /* Official name of the host. */
|
|
||||||
char **h_aliases; /* A pointer to an array of pointers to alternative host names,
|
|
||||||
terminated by a null pointer. */
|
|
||||||
int h_addrtype; /* Address type. */
|
|
||||||
int h_length; /* The length, in bytes, of the address. */
|
|
||||||
char **h_addr_list; /* A pointer to an array of pointers to network addresses (in
|
|
||||||
network byte order) for the host, terminated by a null pointer. */
|
|
||||||
#define h_addr h_addr_list[0] /* for backward compatibility */
|
|
||||||
};
|
|
||||||
#endif /* LWIP_DNS */
|
|
||||||
|
|
||||||
#ifndef socklen_t
|
#ifndef socklen_t
|
||||||
# define socklen_t u32_t
|
# define socklen_t u32_t
|
||||||
#endif
|
#endif
|
||||||
@ -313,12 +300,6 @@ int lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptse
|
|||||||
struct timeval *timeout);
|
struct timeval *timeout);
|
||||||
int lwip_ioctl(int s, long cmd, void *argp);
|
int lwip_ioctl(int s, long cmd, void *argp);
|
||||||
|
|
||||||
#if LWIP_DNS
|
|
||||||
struct hostent *lwip_gethostbyname(const char *name);
|
|
||||||
int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
|
|
||||||
size_t buflen, struct hostent **result, int *h_errnop);
|
|
||||||
#endif /* LWIP_DNS */
|
|
||||||
|
|
||||||
#if LWIP_COMPAT_SOCKETS
|
#if LWIP_COMPAT_SOCKETS
|
||||||
#define accept(a,b,c) lwip_accept(a,b,c)
|
#define accept(a,b,c) lwip_accept(a,b,c)
|
||||||
#define bind(a,b,c) lwip_bind(a,b,c)
|
#define bind(a,b,c) lwip_bind(a,b,c)
|
||||||
@ -337,8 +318,6 @@ int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
|
|||||||
#define socket(a,b,c) lwip_socket(a,b,c)
|
#define socket(a,b,c) lwip_socket(a,b,c)
|
||||||
#define select(a,b,c,d,e) lwip_select(a,b,c,d,e)
|
#define select(a,b,c,d,e) lwip_select(a,b,c,d,e)
|
||||||
#define ioctlsocket(a,b,c) lwip_ioctl(a,b,c)
|
#define ioctlsocket(a,b,c) lwip_ioctl(a,b,c)
|
||||||
#define gethostbyname(a) lwip_gethostbyname(a)
|
|
||||||
#define gethostbyname_r(a,b,c,d,e,f) lwip_gethostbyname_r(a,b,c,d,e,f)
|
|
||||||
|
|
||||||
#if LWIP_POSIX_SOCKETS_IO_NAMES
|
#if LWIP_POSIX_SOCKETS_IO_NAMES
|
||||||
#define read(a,b,c) lwip_read(a,b,c)
|
#define read(a,b,c) lwip_read(a,b,c)
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user