Add getaddrinfo.

1 files changed, 90 insertions, 0 deletions

diff --git a/lib/getaddrinfo.h b/lib/getaddrinfo.h
new file mode 100644
index 0000000000..59553234e9
--- /dev/null
+++ b/lib/getaddrinfo.h
@@ -0,0 +1,90 @@
+/* Get address information.
+   Copyright (C) 1996-2002, 2003, 2004 Free Software Foundation, Inc.
+   Contributed by Simon Josefsson <simon@josefsson.org>.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef GETADDRINFO_H
+# define GETADDRINFO_H
+
+/* Get getaddrinfo declarations, if available. */
+# include <sys/socket.h>
+# include <netdb.h>
+
+# if defined HAVE_GETADDRINFO && !HAVE_GETADDRINFO
+
+/* Get socklen_t, struct sockaddr. */
+#  include <sys/types.h>
+
+/* Structure to contain information about address of a service provider.  */
+struct addrinfo
+{
+  int ai_flags;			/* Input flags.  */
+  int ai_family;		/* Protocol family for socket.  */
+  int ai_socktype;		/* Socket type.  */
+  int ai_protocol;		/* Protocol for socket.  */
+  socklen_t ai_addrlen;		/* Length of socket address.  */
+  struct sockaddr *ai_addr;	/* Socket address for socket.  */
+  char *ai_canonname;		/* Canonical name for service location.  */
+  struct addrinfo *ai_next;	/* Pointer to next in list.  */
+};
+
+/* Possible values for `ai_flags' field in `addrinfo' structure.  */
+# define AI_PASSIVE	0x0001	/* Socket address is intended for `bind'.  */
+# define AI_CANONNAME	0x0002	/* Request for canonical name.  */
+# define AI_NUMERICHOST	0x0004	/* Don't use name resolution.  */
+# define AI_V4MAPPED	0x0008	/* IPv4 mapped addresses are acceptable.  */
+# define AI_ALL		0x0010	/* Return IPv4 mapped and IPv6 addresses.  */
+# define AI_ADDRCONFIG	0x0020	/* Use configuration of this host to choose
+				   returned address type..  */
+
+/* Error values for `getaddrinfo' function.  */
+# define EAI_BADFLAGS	  -1	/* Invalid value for `ai_flags' field.  */
+# define EAI_NONAME	  -2	/* NAME or SERVICE is unknown.  */
+# define EAI_AGAIN	  -3	/* Temporary failure in name resolution.  */
+# define EAI_FAIL	  -4	/* Non-recoverable failure in name res.  */
+# define EAI_NODATA	  -5	/* No address associated with NAME.  */
+# define EAI_FAMILY	  -6	/* `ai_family' not supported.  */
+# define EAI_SOCKTYPE	  -7	/* `ai_socktype' not supported.  */
+# define EAI_SERVICE	  -8	/* SERVICE not supported for `ai_socktype'.  */
+# define EAI_ADDRFAMILY	  -9	/* Address family for NAME not supported.  */
+# define EAI_MEMORY	  -10	/* Memory allocation failure.  */
+# define EAI_SYSTEM	  -11	/* System error returned in `errno'.  */
+# define EAI_OVERFLOW	  -12	/* Argument buffer overflow.  */
+# ifdef __USE_GNU
+#  define EAI_INPROGRESS  -100	/* Processing request in progress.  */
+#  define EAI_CANCELED	  -101	/* Request canceled.  */
+#  define EAI_NOTCANCELED -102	/* Request not canceled.  */
+#  define EAI_ALLDONE	  -103	/* All requests done.  */
+#  define EAI_INTR	  -104	/* Interrupted by a signal.  */
+#  define EAI_IDN_ENCODE  -105	/* IDN encoding failed.  */
+# endif
+
+/* Translate name of a service location and/or a service name to set of
+   socket addresses.  */
+extern int getaddrinfo (const char *restrict nodename,
+			const char *restrict servname,
+			const struct addrinfo *restrict hints,
+			struct addrinfo **restrict res);
+
+/* Free `addrinfo' structure AI including associated storage.  */
+extern void freeaddrinfo (struct addrinfo *ai);
+
+/* Convert error return from getaddrinfo() to a string.  */
+extern const char *gai_strerror (int ecode);
+
+# endif
+
+#endif /* GETADDRINFO_H */