156 lines
5.7 KiB
C
156 lines
5.7 KiB
C
/* Get address information.
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Copyright (C) 1996-2002, 2003, 2004, 2005, 2006
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Free Software Foundation, Inc.
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Contributed by Simon Josefsson <simon@josefsson.org>.
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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, or (at your option)
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any later version.
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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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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 Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef GETADDRINFO_H
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#define GETADDRINFO_H
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/* sys/socket.h in i386-unknown-freebsd4.10 and
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powerpc-apple-darwin5.5 require sys/types.h, so include it first.
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Then we'll also get 'socklen_t' and 'struct sockaddr' which are
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used below. */
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#include <sys/types.h>
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/* Get all getaddrinfo related declarations, if available. */
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#include <sys/socket.h>
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#ifndef HAVE_STRUCT_ADDRINFO
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/* Structure to contain information about address of a service provider. */
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struct addrinfo
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{
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int ai_flags; /* Input flags. */
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int ai_family; /* Protocol family for socket. */
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int ai_socktype; /* Socket type. */
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int ai_protocol; /* Protocol for socket. */
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socklen_t ai_addrlen; /* Length of socket address. */
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struct sockaddr *ai_addr; /* Socket address for socket. */
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char *ai_canonname; /* Canonical name for service location. */
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struct addrinfo *ai_next; /* Pointer to next in list. */
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};
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#endif
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/* Possible values for `ai_flags' field in `addrinfo' structure. */
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#ifndef AI_PASSIVE
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# define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
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#endif
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#ifndef AI_CANONNAME
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# define AI_CANONNAME 0x0002 /* Request for canonical name. */
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#endif
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#ifndef AI_NUMERICSERV
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# define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
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#endif
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#if 0
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/* The commented out definitions below are not yet implemented in the
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GNULIB getaddrinfo() replacement, so are not yet needed and may, in fact,
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cause conflicts on systems with a getaddrinfo() function which does not
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define them.
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If they are restored, be sure to protect the definitions with #ifndef. */
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#define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
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#define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
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#define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
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#define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose
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returned address type.. */
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#endif /* 0 */
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/* Error values for `getaddrinfo' function. */
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#ifndef EAI_BADFLAGS
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# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
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# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
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# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
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# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
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# define EAI_NODATA -5 /* No address associated with NAME. */
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# define EAI_FAMILY -6 /* `ai_family' not supported. */
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# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
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# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
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# define EAI_MEMORY -10 /* Memory allocation failure. */
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#endif
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#ifndef EAI_OVERFLOW
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/* Not defined on mingw32. */
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# define EAI_OVERFLOW -12 /* Argument buffer overflow. */
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#endif
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#ifndef EAI_ADDRFAMILY
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/* Not defined on mingw32. */
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# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
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#endif
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#ifndef EAI_SYSTEM
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/* Not defined on mingw32. */
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# define EAI_SYSTEM -11 /* System error returned in `errno'. */
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#endif
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#ifdef __USE_GNU
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# ifndef EAI_INPROGRESS
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# define EAI_INPROGRESS -100 /* Processing request in progress. */
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# define EAI_CANCELED -101 /* Request canceled. */
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# define EAI_NOTCANCELED -102 /* Request not canceled. */
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# define EAI_ALLDONE -103 /* All requests done. */
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# define EAI_INTR -104 /* Interrupted by a signal. */
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# define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
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# endif
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#endif
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#if !HAVE_DECL_GETADDRINFO
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/* Translate name of a service location and/or a service name to set of
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socket addresses.
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For more details, see the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
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extern int getaddrinfo (const char *restrict nodename,
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const char *restrict servname,
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const struct addrinfo *restrict hints,
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struct addrinfo **restrict res);
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#endif
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#if !HAVE_DECL_FREEADDRINFO
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/* Free `addrinfo' structure AI including associated storage.
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For more details, see the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/getaddrinfo.html>. */
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extern void freeaddrinfo (struct addrinfo *ai);
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#endif
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#if !HAVE_DECL_GAI_STRERROR
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/* Convert error return from getaddrinfo() to a string.
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For more details, see the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/gai_strerror.html>. */
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extern const char *gai_strerror (int ecode);
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#endif
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#if !HAVE_DECL_GETNAMEINFO
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/* Convert socket address to printable node and service names.
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For more details, see the POSIX:2001 specification
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<http://www.opengroup.org/susv3xsh/getnameinfo.html>. */
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extern int getnameinfo(const struct sockaddr *restrict sa, socklen_t salen,
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char *restrict node, socklen_t nodelen,
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char *restrict service, socklen_t servicelen,
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int flags);
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#endif
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/* Possible flags for getnameinfo. */
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#ifndef NI_NUMERICHOST
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# define NI_NUMERICHOST 1
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#endif
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#ifndef NI_NUMERICSERV
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# define NI_NUMERICSERV 2
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#endif
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#endif /* GETADDRINFO_H */
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