/** @file | |
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials are licensed and made available under | |
the terms and conditions of the BSD License that accompanies this distribution. | |
The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php. | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
* 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. Neither the name of the project nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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. | |
* Issues to be discussed: | |
* - Thread safe-ness must be checked | |
* - Return values. There seems to be no standard for return value (RFC2133) | |
* but INRIA implementation returns EAI_xxx defined for getaddrinfo(). | |
**/ | |
#if 0 | |
#include <sys/types.h> | |
#include <sys/socket.h> | |
#include <netinet/in.h> | |
#include <arpa/inet.h> | |
#include <arpa/nameser.h> | |
#include <netdb.h> | |
#include <resolv.h> | |
#include <string.h> | |
#include <stddef.h> | |
#include "addrinfo.h" | |
#endif | |
#define SUCCESS 0 | |
#define YES 1 | |
#define NO 0 | |
static struct gni_afd { | |
int a_af; | |
int a_addrlen; | |
int a_socklen; | |
int a_off; | |
} gni_afdl [] = { | |
#ifdef ENABLE_IPV6 | |
{PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6), | |
offsetof(struct sockaddr_in6, sin6_addr)}, | |
#endif | |
{PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in), | |
offsetof(struct sockaddr_in, sin_addr)}, | |
{0, 0, 0}, | |
}; | |
struct gni_sockinet { | |
u_char si_len; | |
u_char si_family; | |
u_short si_port; | |
}; | |
#define ENI_NOSOCKET 0 | |
#define ENI_NOSERVNAME 1 | |
#define ENI_NOHOSTNAME 2 | |
#define ENI_MEMORY 3 | |
#define ENI_SYSTEM 4 | |
#define ENI_FAMILY 5 | |
#define ENI_SALEN 6 | |
/* forward declaration to make gcc happy */ | |
int getnameinfo Py_PROTO((const struct sockaddr *, size_t, char *, size_t, | |
char *, size_t, int)); | |
int | |
getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) | |
const struct sockaddr *sa; | |
size_t salen; | |
char *host; | |
size_t hostlen; | |
char *serv; | |
size_t servlen; | |
int flags; | |
{ | |
struct gni_afd *gni_afd; | |
struct servent *sp; | |
struct hostent *hp; | |
u_short port; | |
int family, len, i; | |
char *addr, *p; | |
u_long v4a; | |
#ifdef ENABLE_IPV6 | |
u_char pfx; | |
int h_error; | |
#endif | |
char numserv[512]; | |
char numaddr[512]; | |
if (sa == NULL) | |
return ENI_NOSOCKET; | |
#ifdef HAVE_SOCKADDR_SA_LEN | |
len = sa->sa_len; | |
if (len != salen) return ENI_SALEN; | |
#else | |
len = salen; | |
#endif | |
family = sa->sa_family; | |
for (i = 0; gni_afdl[i].a_af; i++) | |
if (gni_afdl[i].a_af == family) { | |
gni_afd = &gni_afdl[i]; | |
goto found; | |
} | |
return ENI_FAMILY; | |
found: | |
if (len != gni_afd->a_socklen) return ENI_SALEN; | |
port = ((struct gni_sockinet *)sa)->si_port; /* network byte order */ | |
addr = (char *)sa + gni_afd->a_off; | |
if (serv == NULL || servlen == 0) { | |
/* what we should do? */ | |
} else if (flags & NI_NUMERICSERV) { | |
sprintf(numserv, "%d", ntohs(port)); | |
if (strlen(numserv) > servlen) | |
return ENI_MEMORY; | |
strcpy(serv, numserv); | |
} else { | |
sp = getservbyport(port, (flags & NI_DGRAM) ? "udp" : "tcp"); | |
if (sp) { | |
if (strlen(sp->s_name) > servlen) | |
return ENI_MEMORY; | |
strcpy(serv, sp->s_name); | |
} else | |
return ENI_NOSERVNAME; | |
} | |
switch (sa->sa_family) { | |
case AF_INET: | |
v4a = ((struct sockaddr_in *)sa)->sin_addr.s_addr; | |
if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a)) | |
flags |= NI_NUMERICHOST; | |
v4a >>= IN_CLASSA_NSHIFT; | |
if (v4a == 0 || v4a == IN_LOOPBACKNET) | |
flags |= NI_NUMERICHOST; | |
break; | |
#ifdef ENABLE_IPV6 | |
case AF_INET6: | |
pfx = ((struct sockaddr_in6 *)sa)->sin6_addr.s6_addr8[0]; | |
if (pfx == 0 || pfx == 0xfe || pfx == 0xff) | |
flags |= NI_NUMERICHOST; | |
break; | |
#endif | |
} | |
if (host == NULL || hostlen == 0) { | |
/* what should we do? */ | |
} else if (flags & NI_NUMERICHOST) { | |
if (inet_ntop(gni_afd->a_af, addr, numaddr, sizeof(numaddr)) | |
== NULL) | |
return ENI_SYSTEM; | |
if (strlen(numaddr) > hostlen) | |
return ENI_MEMORY; | |
strcpy(host, numaddr); | |
} else { | |
#ifdef ENABLE_IPV6 | |
hp = getipnodebyaddr(addr, gni_afd->a_addrlen, gni_afd->a_af, &h_error); | |
#else | |
hp = gethostbyaddr(addr, gni_afd->a_addrlen, gni_afd->a_af); | |
//h_error = h_errno; | |
#endif | |
if (hp) { | |
if (flags & NI_NOFQDN) { | |
p = strchr(hp->h_name, '.'); | |
if (p) *p = '\0'; | |
} | |
if (strlen(hp->h_name) > hostlen) { | |
#ifdef ENABLE_IPV6 | |
freehostent(hp); | |
#endif | |
return ENI_MEMORY; | |
} | |
strcpy(host, hp->h_name); | |
#ifdef ENABLE_IPV6 | |
freehostent(hp); | |
#endif | |
} else { | |
if (flags & NI_NAMEREQD) | |
return ENI_NOHOSTNAME; | |
if (inet_ntop(gni_afd->a_af, addr, numaddr, sizeof(numaddr)) | |
== NULL) | |
return ENI_NOHOSTNAME; | |
if (strlen(numaddr) > hostlen) | |
return ENI_MEMORY; | |
strcpy(host, numaddr); | |
} | |
} | |
return SUCCESS; | |
} |