2005-05-22 13:19:55 +02:00
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/*****************************************************************************
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* getaddrinfo.c: getaddrinfo/getnameinfo replacement functions
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*****************************************************************************
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2005-07-09 08:17:09 +02:00
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* Copyright (C) 2005 the VideoLAN team
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2005-05-22 13:19:55 +02:00
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* Copyright (C) 2002-2004 Rémi Denis-Courmont
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* $Id$
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*
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* Author: Rémi Denis-Courmont <rem # videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <vlc/vlc.h>
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#include <stddef.h> /* size_t */
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#include <string.h> /* strncpy(), strlen(), memcpy(), memset(), strchr() */
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#include <stdlib.h> /* malloc(), free(), strtoul() */
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2005-09-22 22:14:20 +02:00
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#include <errno.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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2005-05-22 13:19:55 +02:00
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#ifdef HAVE_ARPA_INET_H
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2005-09-22 22:14:20 +02:00
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# include <arpa/inet.h>
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2005-05-22 13:19:55 +02:00
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#endif
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#ifdef HAVE_NETINET_IN_H
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2005-05-24 15:37:18 +02:00
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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2005-05-22 13:19:55 +02:00
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#endif
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2005-05-24 15:37:18 +02:00
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#include "network.h"
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2005-07-11 17:59:36 +02:00
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#ifndef NO_ADDRESS
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2005-05-31 16:51:13 +02:00
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# define NO_ADDRESS NO_DATA
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2005-07-11 17:59:36 +02:00
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#endif
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#ifndef INADDR_NONE
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2005-05-31 16:51:13 +02:00
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# define INADDR_NONE 0xFFFFFFFF
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2005-07-11 17:59:36 +02:00
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#endif
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#ifndef AF_UNSPEC
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2005-05-31 16:51:13 +02:00
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# define AF_UNSPEC 0
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2005-05-23 08:22:02 +02:00
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#endif
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2005-05-22 13:19:55 +02:00
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2005-05-31 16:51:13 +02:00
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#define _NI_MASK (NI_NUMERICHOST|NI_NUMERICSERV|NI_NOFQDN|NI_NAMEREQD|\
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NI_DGRAM)
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#define _AI_MASK (AI_PASSIVE|AI_CANONNAME|AI_NUMERICHOST)
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2005-05-22 13:19:55 +02:00
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#ifndef HAVE_GAI_STRERROR
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static struct
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{
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int code;
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const char *msg;
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} const __gai_errlist[] =
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{
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{ 0, "Error 0" },
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{ EAI_BADFLAGS, "Invalid flag used" },
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{ EAI_NONAME, "Host or service not found" },
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{ EAI_AGAIN, "Temporary name service failure" },
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{ EAI_FAIL, "Non-recoverable name service failure" },
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{ EAI_NODATA, "No data for host name" },
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{ EAI_FAMILY, "Unsupported address family" },
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{ EAI_SOCKTYPE, "Unsupported socket type" },
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{ EAI_SERVICE, "Incompatible service for socket type" },
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{ EAI_ADDRFAMILY, "Unavailable address family for host name" },
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{ EAI_MEMORY, "Memory allocation failure" },
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{ EAI_SYSTEM, "System error" },
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{ 0, NULL }
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};
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static const char *__gai_unknownerr = "Unrecognized error number";
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/****************************************************************************
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* Converts an EAI_* error code into human readable english text.
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****************************************************************************/
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const char *vlc_gai_strerror( int errnum )
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{
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int i;
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for (i = 0; __gai_errlist[i].msg != NULL; i++)
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if (errnum == __gai_errlist[i].code)
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return __gai_errlist[i].msg;
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return __gai_unknownerr;
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}
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# undef _EAI_POSITIVE_MAX
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#else /* ifndef HAVE_GAI_STRERROR */
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const char *vlc_gai_strerror( int errnum )
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{
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return gai_strerror( errnum );
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}
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#endif
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#if !(defined (HAVE_GETNAMEINFO) && defined (HAVE_GETADDRINFO))
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/*
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* Converts the current herrno error value into an EAI_* error code.
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* That error code is normally returned by getnameinfo() or getaddrinfo().
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*/
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static int
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gai_error_from_herrno( void )
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{
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switch(h_errno)
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{
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case HOST_NOT_FOUND:
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return EAI_NONAME;
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case NO_ADDRESS:
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# if (NO_ADDRESS != NO_DATA)
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case NO_DATA:
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# endif
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return EAI_NODATA;
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case NO_RECOVERY:
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return EAI_FAIL;
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case TRY_AGAIN:
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return EAI_AGAIN;
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}
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return EAI_SYSTEM;
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}
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#endif /* if !(HAVE_GETNAMEINFO && HAVE_GETADDRINFO) */
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#ifndef HAVE_GETNAMEINFO
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/*
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* getnameinfo() non-thread-safe IPv4-only implementation,
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* Address-family-independant address to hostname translation
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* (reverse DNS lookup in case of IPv4).
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*
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* This is meant for use on old IP-enabled systems that are not IPv6-aware,
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* and probably do not have getnameinfo(), but have the old gethostbyaddr()
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* function.
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*
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* GNU C library 2.0.x is known to lack this function, even though it defines
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* getaddrinfo().
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*/
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static int
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__getnameinfo( const struct sockaddr *sa, socklen_t salen,
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char *host, int hostlen, char *serv, int servlen, int flags )
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{
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if (((unsigned)salen < sizeof (struct sockaddr_in))
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|| (sa->sa_family != AF_INET))
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return EAI_FAMILY;
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else if (flags & (~_NI_MASK))
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return EAI_BADFLAGS;
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else
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{
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const struct sockaddr_in *addr;
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addr = (const struct sockaddr_in *)sa;
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if (host != NULL)
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{
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int solved = 0;
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/* host name resolution */
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if (!(flags & NI_NUMERICHOST))
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{
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struct hostent *hent;
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hent = gethostbyaddr ((const void*)&addr->sin_addr,
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4, AF_INET);
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if (hent != NULL)
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{
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strncpy (host, hent->h_name, hostlen);
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host[hostlen - 1] = '\0';
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/*
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* only keep first part of hostname
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* if user don't want fully qualified
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* domain name
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*/
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if (flags & NI_NOFQDN)
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{
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char *ptr;
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ptr = strchr (host, '.');
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if (ptr != NULL)
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*ptr = 0;
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}
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solved = 1;
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}
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else if (flags & NI_NAMEREQD)
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return gai_error_from_herrno ();
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}
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if (!solved)
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{
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/* inet_ntoa() can't fail */
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strncpy (host, inet_ntoa (addr->sin_addr), hostlen);
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host[hostlen - 1] = '\0';
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}
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}
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if (serv != NULL)
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{
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struct servent *sent = NULL;
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2005-05-23 08:22:02 +02:00
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#ifndef SYS_BEOS /* No getservbyport() */
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2005-05-22 13:19:55 +02:00
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int solved = 0;
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/* service name resolution */
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if (!(flags & NI_NUMERICSERV))
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{
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sent = getservbyport(addr->sin_port,
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(flags & NI_DGRAM)
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? "udp" : "tcp");
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if (sent != NULL)
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{
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strncpy (serv, sent->s_name, servlen);
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serv[servlen - 1] = 0;
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solved = 1;
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}
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}
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2005-05-23 08:22:02 +02:00
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#else
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sent = NULL;
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#endif
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2005-05-22 13:19:55 +02:00
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if (sent == NULL)
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{
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snprintf (serv, servlen, "%u",
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(unsigned int)ntohs (addr->sin_port));
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serv[servlen - 1] = '\0';
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}
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}
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}
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return 0;
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}
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#endif /* if !HAVE_GETNAMEINFO */
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#ifndef HAVE_GETADDRINFO
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/*
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* This functions must be used to free the memory allocated by getaddrinfo().
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*/
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static void
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__freeaddrinfo (struct addrinfo *res)
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{
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if (res != NULL)
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{
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if (res->ai_canonname != NULL)
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free (res->ai_canonname);
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if (res->ai_addr != NULL)
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free (res->ai_addr);
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if (res->ai_next != NULL)
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free (res->ai_next);
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free (res);
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}
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}
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/*
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* Internal function that builds an addrinfo struct.
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*/
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static struct addrinfo *
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makeaddrinfo (int af, int type, int proto,
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const struct sockaddr *addr, size_t addrlen,
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const char *canonname)
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{
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struct addrinfo *res;
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res = (struct addrinfo *)malloc (sizeof (struct addrinfo));
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if (res != NULL)
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{
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res->ai_flags = 0;
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res->ai_family = af;
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res->ai_socktype = type;
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res->ai_protocol = proto;
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res->ai_addrlen = addrlen;
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res->ai_addr = malloc (addrlen);
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res->ai_canonname = NULL;
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res->ai_next = NULL;
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if (res->ai_addr != NULL)
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{
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memcpy (res->ai_addr, addr, addrlen);
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if (canonname != NULL)
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{
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res->ai_canonname = strdup (canonname);
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if (res->ai_canonname != NULL)
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return res; /* success ! */
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}
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else
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return res;
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}
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}
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/* failsafe */
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2005-05-23 08:22:02 +02:00
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vlc_freeaddrinfo (res);
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2005-05-22 13:19:55 +02:00
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return NULL;
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}
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static struct addrinfo *
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makeipv4info (int type, int proto, u_long ip, u_short port, const char *name)
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{
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struct sockaddr_in addr;
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memset (&addr, 0, sizeof (addr));
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addr.sin_family = AF_INET;
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# ifdef HAVE_SA_LEN
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addr.sin_len = sizeof (addr);
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# endif
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addr.sin_port = port;
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addr.sin_addr.s_addr = ip;
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2005-07-01 20:00:04 +02:00
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return makeaddrinfo (AF_INET, type, proto,
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2005-05-22 13:19:55 +02:00
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(struct sockaddr*)&addr, sizeof (addr), name);
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}
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/*
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* getaddrinfo() non-thread-safe IPv4-only implementation
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* Address-family-independant hostname to address resolution.
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*
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* This is meant for IPv6-unaware systems that do probably not provide
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* getaddrinfo(), but still have old function gethostbyname().
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*
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* Only UDP and TCP over IPv4 are supported here.
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*/
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static int
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__getaddrinfo (const char *node, const char *service,
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const struct addrinfo *hints, struct addrinfo **res)
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{
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struct addrinfo *info;
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u_long ip;
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u_short port;
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int protocol = 0, flags = 0;
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const char *name = NULL;
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if (hints != NULL)
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{
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flags = hints->ai_flags;
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if (flags & ~_AI_MASK)
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return EAI_BADFLAGS;
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/* only accept AF_INET and AF_UNSPEC */
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if (hints->ai_family && (hints->ai_family != AF_INET))
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return EAI_FAMILY;
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/* protocol sanity check */
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switch (hints->ai_socktype)
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{
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case SOCK_STREAM:
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protocol = IPPROTO_TCP;
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break;
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case SOCK_DGRAM:
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protocol = IPPROTO_UDP;
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break;
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|
2005-05-23 08:22:02 +02:00
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#ifndef SYS_BEOS
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2005-05-22 13:19:55 +02:00
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case SOCK_RAW:
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2005-05-23 08:22:02 +02:00
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#endif
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2005-05-22 13:19:55 +02:00
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case 0:
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break;
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default:
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return EAI_SOCKTYPE;
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}
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|
|
if (hints->ai_protocol && protocol
|
|
|
|
&& (protocol != hints->ai_protocol))
|
|
|
|
return EAI_SERVICE;
|
|
|
|
}
|
|
|
|
|
|
|
|
*res = NULL;
|
|
|
|
|
|
|
|
/* default values */
|
|
|
|
if (node == NULL)
|
|
|
|
{
|
|
|
|
if (flags & AI_PASSIVE)
|
|
|
|
ip = htonl (INADDR_ANY);
|
|
|
|
else
|
|
|
|
ip = htonl (INADDR_LOOPBACK);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
if ((ip = inet_addr (node)) == INADDR_NONE)
|
|
|
|
{
|
|
|
|
struct hostent *entry = NULL;
|
|
|
|
|
|
|
|
/* hostname resolution */
|
|
|
|
if (!(flags & AI_NUMERICHOST))
|
|
|
|
entry = gethostbyname (node);
|
|
|
|
|
|
|
|
if (entry == NULL)
|
|
|
|
return EAI_NONAME;
|
|
|
|
|
|
|
|
if ((entry->h_length != 4) || (entry->h_addrtype != AF_INET))
|
|
|
|
return EAI_FAMILY;
|
|
|
|
|
|
|
|
ip = *((u_long *) entry->h_addr);
|
|
|
|
if (flags & AI_CANONNAME)
|
|
|
|
name = entry->h_name;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((flags & AI_CANONNAME) && (name == NULL))
|
|
|
|
name = node;
|
|
|
|
|
|
|
|
/* service resolution */
|
|
|
|
if (service == NULL)
|
|
|
|
port = 0;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
long d;
|
|
|
|
char *end;
|
|
|
|
|
|
|
|
d = strtoul (service, &end, 0);
|
|
|
|
if (end[0] /* service is not a number */
|
|
|
|
|| (d > 65535))
|
|
|
|
{
|
|
|
|
struct servent *entry;
|
|
|
|
const char *protoname;
|
|
|
|
|
|
|
|
switch (protocol)
|
|
|
|
{
|
|
|
|
case IPPROTO_TCP:
|
|
|
|
protoname = "tcp";
|
|
|
|
break;
|
|
|
|
|
|
|
|
case IPPROTO_UDP:
|
|
|
|
protoname = "udp";
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
protoname = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
entry = getservbyname (service, protoname);
|
|
|
|
if (entry == NULL)
|
|
|
|
return EAI_SERVICE;
|
|
|
|
|
|
|
|
port = entry->s_port;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
port = htons ((u_short)d);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* building results... */
|
|
|
|
if ((!protocol) || (protocol == IPPROTO_UDP))
|
|
|
|
{
|
|
|
|
info = makeipv4info (SOCK_DGRAM, IPPROTO_UDP, ip, port, name);
|
|
|
|
if (info == NULL)
|
|
|
|
{
|
|
|
|
errno = ENOMEM;
|
|
|
|
return EAI_SYSTEM;
|
|
|
|
}
|
|
|
|
if (flags & AI_PASSIVE)
|
|
|
|
info->ai_flags |= AI_PASSIVE;
|
|
|
|
*res = info;
|
|
|
|
}
|
|
|
|
if ((!protocol) || (protocol == IPPROTO_TCP))
|
|
|
|
{
|
|
|
|
info = makeipv4info (SOCK_STREAM, IPPROTO_TCP, ip, port, name);
|
|
|
|
if (info == NULL)
|
|
|
|
{
|
|
|
|
errno = ENOMEM;
|
|
|
|
return EAI_SYSTEM;
|
|
|
|
}
|
|
|
|
info->ai_next = *res;
|
|
|
|
if (flags & AI_PASSIVE)
|
|
|
|
info->ai_flags |= AI_PASSIVE;
|
|
|
|
*res = info;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif /* if !HAVE_GETADDRINFO */
|
|
|
|
|
|
|
|
|
2005-06-26 12:24:35 +02:00
|
|
|
int vlc_getnameinfo( const struct sockaddr *sa, int salen,
|
2005-06-26 11:12:36 +02:00
|
|
|
char *host, int hostlen, int *portnum, int flags )
|
2005-05-22 13:19:55 +02:00
|
|
|
{
|
2005-06-26 11:12:36 +02:00
|
|
|
char psz_servbuf[6], *psz_serv;
|
|
|
|
int i_servlen, i_val;
|
2005-07-17 23:21:04 +02:00
|
|
|
#ifdef WIN32
|
|
|
|
/*
|
|
|
|
* Here is the kind of kludge you need to keep binary compatibility among
|
|
|
|
* varying OS versions...
|
|
|
|
*/
|
|
|
|
typedef int (CALLBACK * GETNAMEINFO) ( const struct sockaddr*, socklen_t,
|
|
|
|
char*, DWORD, char*, DWORD, int );
|
|
|
|
HINSTANCE wship6_module;
|
|
|
|
GETNAMEINFO ws2_getnameinfo;
|
|
|
|
#endif
|
2005-06-26 11:12:36 +02:00
|
|
|
|
|
|
|
flags |= NI_NUMERICSERV;
|
|
|
|
if( portnum != NULL )
|
|
|
|
{
|
|
|
|
psz_serv = psz_servbuf;
|
|
|
|
i_servlen = sizeof( psz_servbuf );
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
psz_serv = NULL;
|
|
|
|
i_servlen = 0;
|
|
|
|
}
|
2005-07-17 23:21:04 +02:00
|
|
|
#ifdef WIN32
|
2005-05-22 13:19:55 +02:00
|
|
|
wship6_module = LoadLibrary( "wship6.dll" );
|
|
|
|
if( wship6_module != NULL )
|
|
|
|
{
|
|
|
|
ws2_getnameinfo = (GETNAMEINFO)GetProcAddress( wship6_module,
|
|
|
|
"getnameinfo" );
|
|
|
|
|
|
|
|
if( ws2_getnameinfo != NULL )
|
|
|
|
{
|
2005-06-26 11:12:36 +02:00
|
|
|
i_val = ws2_getnameinfo( sa, salen, host, hostlen, psz_serv,
|
|
|
|
i_servlen, flags );
|
2005-05-22 13:19:55 +02:00
|
|
|
FreeLibrary( wship6_module );
|
2005-06-26 11:12:36 +02:00
|
|
|
|
|
|
|
if( portnum != NULL )
|
|
|
|
*portnum = atoi( psz_serv );
|
2005-05-22 13:19:55 +02:00
|
|
|
return i_val;
|
|
|
|
}
|
|
|
|
|
|
|
|
FreeLibrary( wship6_module );
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#if HAVE_GETNAMEINFO
|
2005-06-26 11:12:36 +02:00
|
|
|
i_val = getnameinfo( sa, salen, host, hostlen, psz_serv, i_servlen,
|
|
|
|
flags );
|
2005-05-22 13:19:55 +02:00
|
|
|
#else
|
2005-06-26 11:12:36 +02:00
|
|
|
{
|
2005-06-26 12:24:35 +02:00
|
|
|
# ifdef HAVE_USABLE_MUTEX_THAT_DONT_NEED_LIBVLC_POINTER
|
|
|
|
static vlc_value_t lock;
|
2005-06-26 11:12:36 +02:00
|
|
|
|
|
|
|
/* my getnameinfo implementation is not thread-safe as it uses
|
2005-06-26 12:24:35 +02:00
|
|
|
* gethostbyaddr and the likes */
|
2005-06-26 11:12:36 +02:00
|
|
|
vlc_mutex_lock( lock.p_address );
|
2005-06-26 12:24:35 +02:00
|
|
|
#else
|
2005-07-17 23:21:04 +02:00
|
|
|
//# warning FIXME : This is not thread-safe!
|
2005-06-26 12:24:35 +02:00
|
|
|
#endif
|
2005-06-26 11:12:36 +02:00
|
|
|
i_val = __getnameinfo( sa, salen, host, hostlen, psz_serv, i_servlen,
|
|
|
|
flags );
|
2005-06-26 12:24:35 +02:00
|
|
|
# ifdef HAVE_USABLE_MUTEX_THAT_DONT_NEED_LIBVLC_POINTER
|
2005-06-26 11:12:36 +02:00
|
|
|
vlc_mutex_unlock( lock.p_address );
|
2005-06-26 12:24:35 +02:00
|
|
|
# endif
|
2005-06-26 11:12:36 +02:00
|
|
|
}
|
|
|
|
#endif
|
2005-05-22 13:19:55 +02:00
|
|
|
|
2005-06-26 11:12:36 +02:00
|
|
|
if( portnum != NULL )
|
|
|
|
*portnum = atoi( psz_serv );
|
2005-05-22 13:19:55 +02:00
|
|
|
|
|
|
|
return i_val;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* TODO: support for setting sin6_scope_id */
|
|
|
|
int vlc_getaddrinfo( vlc_object_t *p_this, const char *node,
|
2005-06-26 11:12:36 +02:00
|
|
|
int i_port, const struct addrinfo *p_hints,
|
2005-05-22 13:19:55 +02:00
|
|
|
struct addrinfo **res )
|
|
|
|
{
|
|
|
|
struct addrinfo hints;
|
2005-06-26 11:12:36 +02:00
|
|
|
char psz_buf[NI_MAXHOST], *psz_node, psz_service[6];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* In VLC, we always use port number as integer rather than strings
|
|
|
|
* for historical reasons (and portability).
|
|
|
|
*/
|
|
|
|
if( ( i_port > 65535 ) || ( i_port < 0 ) )
|
|
|
|
{
|
|
|
|
msg_Err( p_this, "invalid port number %d specified", i_port );
|
|
|
|
return EAI_SERVICE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* cannot overflow */
|
|
|
|
snprintf( psz_service, 6, "%d", i_port );
|
2005-05-22 13:19:55 +02:00
|
|
|
|
|
|
|
/* Check if we have to force ipv4 or ipv6 */
|
|
|
|
if( p_hints == NULL )
|
|
|
|
memset( &hints, 0, sizeof( hints ) );
|
|
|
|
else
|
|
|
|
memcpy( &hints, p_hints, sizeof( hints ) );
|
|
|
|
|
2005-07-01 20:00:04 +02:00
|
|
|
if( hints.ai_family == AF_UNSPEC )
|
2005-05-22 13:19:55 +02:00
|
|
|
{
|
|
|
|
vlc_value_t val;
|
|
|
|
|
|
|
|
var_Create( p_this, "ipv4", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
|
|
|
|
var_Get( p_this, "ipv4", &val );
|
|
|
|
if( val.b_bool )
|
2005-07-01 20:00:04 +02:00
|
|
|
hints.ai_family = AF_INET;
|
2005-05-22 13:19:55 +02:00
|
|
|
|
2005-07-01 20:00:04 +02:00
|
|
|
#ifdef AF_INET6
|
2005-05-22 13:19:55 +02:00
|
|
|
var_Create( p_this, "ipv6", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
|
|
|
|
var_Get( p_this, "ipv6", &val );
|
|
|
|
if( val.b_bool )
|
2005-07-01 20:00:04 +02:00
|
|
|
hints.ai_family = AF_INET6;
|
2005-05-23 08:22:02 +02:00
|
|
|
#endif
|
2005-05-22 13:19:55 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* VLC extensions :
|
|
|
|
* - accept "" as NULL
|
|
|
|
* - ignore square brackets
|
|
|
|
*/
|
|
|
|
if( ( node == NULL ) || (node[0] == '\0' ) )
|
2005-05-31 22:03:25 +02:00
|
|
|
{
|
2005-05-22 13:19:55 +02:00
|
|
|
psz_node = NULL;
|
2005-05-31 22:03:25 +02:00
|
|
|
}
|
2005-05-22 13:19:55 +02:00
|
|
|
else
|
|
|
|
{
|
|
|
|
strncpy( psz_buf, node, NI_MAXHOST );
|
|
|
|
psz_buf[NI_MAXHOST - 1] = '\0';
|
|
|
|
|
|
|
|
psz_node = psz_buf;
|
|
|
|
|
|
|
|
if( psz_buf[0] == '[' )
|
|
|
|
{
|
|
|
|
char *ptr;
|
|
|
|
|
|
|
|
ptr = strrchr( psz_buf, ']' );
|
|
|
|
if( ( ptr != NULL ) && (ptr[1] == '\0' ) )
|
|
|
|
{
|
|
|
|
*ptr = '\0';
|
|
|
|
psz_node++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef WIN32
|
|
|
|
{
|
2005-05-24 15:37:18 +02:00
|
|
|
typedef int (CALLBACK * GETADDRINFO) ( const char *, const char *,
|
|
|
|
const struct addrinfo *,
|
|
|
|
struct addrinfo ** );
|
|
|
|
HINSTANCE wship6_module;
|
|
|
|
GETADDRINFO ws2_getaddrinfo;
|
|
|
|
|
|
|
|
wship6_module = LoadLibrary( "wship6.dll" );
|
|
|
|
if( wship6_module != NULL )
|
2005-05-22 13:19:55 +02:00
|
|
|
{
|
2005-05-24 15:37:18 +02:00
|
|
|
ws2_getaddrinfo = (GETADDRINFO)GetProcAddress( wship6_module,
|
|
|
|
"getaddrinfo" );
|
2005-05-22 13:19:55 +02:00
|
|
|
|
2005-05-24 15:37:18 +02:00
|
|
|
if( ws2_getaddrinfo != NULL )
|
|
|
|
{
|
|
|
|
int i_ret;
|
2005-05-22 13:19:55 +02:00
|
|
|
|
2005-06-26 16:54:06 +02:00
|
|
|
i_ret = ws2_getaddrinfo( psz_node, psz_service, &hints, res );
|
2005-05-24 15:37:18 +02:00
|
|
|
FreeLibrary( wship6_module ); /* is this wise ? */
|
|
|
|
return i_ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
FreeLibrary( wship6_module );
|
|
|
|
}
|
2005-05-22 13:19:55 +02:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#if HAVE_GETADDRINFO
|
2005-06-26 11:12:36 +02:00
|
|
|
return getaddrinfo( psz_node, psz_service, &hints, res );
|
2005-05-22 13:19:55 +02:00
|
|
|
#else
|
|
|
|
{
|
|
|
|
int i_ret;
|
|
|
|
|
|
|
|
vlc_value_t lock;
|
|
|
|
|
|
|
|
var_Create( p_this->p_libvlc, "getaddrinfo_mutex", VLC_VAR_MUTEX );
|
|
|
|
var_Get( p_this->p_libvlc, "getaddrinfo_mutex", &lock );
|
|
|
|
vlc_mutex_lock( lock.p_address );
|
|
|
|
|
2005-06-26 16:54:06 +02:00
|
|
|
i_ret = __getaddrinfo( psz_node, psz_service, &hints, res );
|
2005-05-22 13:19:55 +02:00
|
|
|
vlc_mutex_unlock( lock.p_address );
|
|
|
|
return i_ret;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void vlc_freeaddrinfo( struct addrinfo *infos )
|
|
|
|
{
|
|
|
|
#ifdef WIN32
|
|
|
|
typedef void (CALLBACK * FREEADDRINFO) ( struct addrinfo * );
|
|
|
|
HINSTANCE wship6_module;
|
|
|
|
FREEADDRINFO ws2_freeaddrinfo;
|
|
|
|
|
|
|
|
wship6_module = LoadLibrary( "wship6.dll" );
|
|
|
|
if( wship6_module != NULL )
|
|
|
|
{
|
|
|
|
ws2_freeaddrinfo = (FREEADDRINFO)GetProcAddress( wship6_module,
|
|
|
|
"freeaddrinfo" );
|
|
|
|
|
|
|
|
/*
|
|
|
|
* NOTE: it is assumed that wship6.dll defines either both
|
|
|
|
* getaddrinfo and freeaddrinfo or none of them.
|
|
|
|
*/
|
|
|
|
if( ws2_freeaddrinfo != NULL )
|
|
|
|
{
|
|
|
|
ws2_freeaddrinfo( infos );
|
|
|
|
FreeLibrary( wship6_module );
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
FreeLibrary( wship6_module );
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_GETADDRINFO
|
|
|
|
freeaddrinfo( infos );
|
|
|
|
#else
|
|
|
|
__freeaddrinfo( infos );
|
|
|
|
#endif
|
|
|
|
}
|