- import of strongswan-2.7.0
- applied patch for charon
This commit is contained in:
Martin Willi
@@ -0,0 +1,289 @@
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/*
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* Portions Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: getnameinfo.c,v 1.1 2004/03/15 20:35:25 as Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by WIDE Project and
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* its contributors.
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* 4. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* XXX
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* Issues to be discussed:
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* - Return values. There seems to be no standard for return value (RFC2553)
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* but INRIA implementation returns EAI_xxx defined for getaddrinfo().
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <lwres/lwres.h>
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#include <lwres/net.h>
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#include <lwres/netdb.h>
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#include "assert_p.h"
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#define SUCCESS 0
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static struct afd {
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int a_af;
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size_t a_addrlen;
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size_t a_socklen;
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} afdl [] = {
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/*
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* First entry is linked last...
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*/
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{ AF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in) },
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{ AF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6) },
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{0, 0, 0},
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};
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#define ENI_NOSERVNAME 1
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#define ENI_NOHOSTNAME 2
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#define ENI_MEMORY 3
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#define ENI_SYSTEM 4
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#define ENI_FAMILY 5
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#define ENI_SALEN 6
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#define ENI_NOSOCKET 7
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/*
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* The test against 0 is there to keep the Solaris compiler
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* from complaining about "end-of-loop code not reached".
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*/
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#define ERR(code) \
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do { result = (code); \
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if (result != 0) goto cleanup; \
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} while (0)
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int
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lwres_getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
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size_t hostlen, char *serv, size_t servlen, int flags)
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{
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struct afd *afd;
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struct servent *sp;
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unsigned short port;
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#ifdef LWRES_PLATFORM_HAVESALEN
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size_t len;
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#endif
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int family, i;
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const void *addr;
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char *p;
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#if 0
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unsigned long v4a;
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unsigned char pfx;
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#endif
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char numserv[sizeof("65000")];
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char numaddr[sizeof("abcd:abcd:abcd:abcd:abcd:abcd:255.255.255.255")
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+ 1 + sizeof("4294967295")];
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const char *proto;
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lwres_uint32_t lwf = 0;
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lwres_context_t *lwrctx = NULL;
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lwres_gnbaresponse_t *by = NULL;
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int result = SUCCESS;
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int n;
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if (sa == NULL)
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ERR(ENI_NOSOCKET);
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#ifdef LWRES_PLATFORM_HAVESALEN
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len = sa->sa_len;
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if (len != salen)
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ERR(ENI_SALEN);
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#endif
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family = sa->sa_family;
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for (i = 0; afdl[i].a_af; i++)
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if (afdl[i].a_af == family) {
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afd = &afdl[i];
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goto found;
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}
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ERR(ENI_FAMILY);
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found:
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if (salen != afd->a_socklen)
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ERR(ENI_SALEN);
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switch (family) {
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case AF_INET:
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port = ((const struct sockaddr_in *)sa)->sin_port;
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addr = &((const struct sockaddr_in *)sa)->sin_addr.s_addr;
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break;
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case AF_INET6:
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port = ((const struct sockaddr_in6 *)sa)->sin6_port;
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addr = ((const struct sockaddr_in6 *)sa)->sin6_addr.s6_addr;
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break;
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default:
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port = 0;
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addr = NULL;
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INSIST(0);
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}
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proto = (flags & NI_DGRAM) ? "udp" : "tcp";
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if (serv == NULL || servlen == 0) {
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/*
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* Caller does not want service.
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*/
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} else if ((flags & NI_NUMERICSERV) != 0 ||
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(sp = getservbyport(port, proto)) == NULL) {
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sprintf(numserv, "%d", ntohs(port));
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if ((strlen(numserv) + 1) > servlen)
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ERR(ENI_MEMORY);
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strcpy(serv, numserv);
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} else {
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if ((strlen(sp->s_name) + 1) > servlen)
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ERR(ENI_MEMORY);
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strcpy(serv, sp->s_name);
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}
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#if 0
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switch (sa->sa_family) {
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case AF_INET:
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v4a = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
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if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a))
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flags |= NI_NUMERICHOST;
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v4a >>= IN_CLASSA_NSHIFT;
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if (v4a == 0 || v4a == IN_LOOPBACKNET)
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flags |= NI_NUMERICHOST;
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break;
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case AF_INET6:
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pfx = ((struct sockaddr_in6 *)sa)->sin6_addr.s6_addr[0];
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if (pfx == 0 || pfx == 0xfe || pfx == 0xff)
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flags |= NI_NUMERICHOST;
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break;
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}
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#endif
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if (host == NULL || hostlen == 0) {
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/*
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* What should we do?
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*/
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} else if (flags & NI_NUMERICHOST) {
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if (lwres_net_ntop(afd->a_af, addr, numaddr, sizeof(numaddr))
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== NULL)
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ERR(ENI_SYSTEM);
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#if defined(LWRES_HAVE_SIN6_SCOPE_ID)
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if (afd->a_af == AF_INET6 &&
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((const struct sockaddr_in6 *)sa)->sin6_scope_id) {
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char *p = numaddr + strlen(numaddr);
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const char *stringscope = NULL;
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#if 0
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if ((flags & NI_NUMERICSCOPE) == 0) {
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/*
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* Vendors may want to add support for
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* non-numeric scope identifier.
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*/
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stringscope = foo;
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}
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#endif
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if (stringscope == NULL) {
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snprintf(p, sizeof(numaddr) - (p - numaddr),
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"%%%u",
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((const struct sockaddr_in6 *)sa)->sin6_scope_id);
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} else {
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snprintf(p, sizeof(numaddr) - (p - numaddr),
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"%%%s", stringscope);
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}
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}
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#endif
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if (strlen(numaddr) + 1 > hostlen)
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ERR(ENI_MEMORY);
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strcpy(host, numaddr);
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} else {
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switch (family) {
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case AF_INET:
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lwf = LWRES_ADDRTYPE_V4;
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break;
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case AF_INET6:
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lwf = LWRES_ADDRTYPE_V6;
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break;
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default:
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INSIST(0);
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}
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n = lwres_context_create(&lwrctx, NULL, NULL, NULL, 0);
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if (n == 0)
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(void) lwres_conf_parse(lwrctx, lwres_resolv_conf);
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if (n == 0)
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n = lwres_getnamebyaddr(lwrctx, lwf,
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(lwres_uint16_t)afd->a_addrlen,
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addr, &by);
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if (n == 0) {
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if (flags & NI_NOFQDN) {
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p = strchr(by->realname, '.');
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if (p)
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*p = '\0';
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}
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if ((strlen(by->realname) + 1) > hostlen)
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ERR(ENI_MEMORY);
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strcpy(host, by->realname);
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} else {
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if (flags & NI_NAMEREQD)
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ERR(ENI_NOHOSTNAME);
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if (lwres_net_ntop(afd->a_af, addr, numaddr,
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sizeof(numaddr))
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== NULL)
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ERR(ENI_NOHOSTNAME);
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if ((strlen(numaddr) + 1) > hostlen)
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ERR(ENI_MEMORY);
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strcpy(host, numaddr);
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}
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}
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result = SUCCESS;
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cleanup:
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if (by != NULL)
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lwres_gnbaresponse_free(lwrctx, &by);
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if (lwrctx != NULL) {
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lwres_conf_clear(lwrctx);
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lwres_context_destroy(&lwrctx);
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}
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return (result);
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}
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