A new version of the getaddrinfo code from the samba source.

[rsync/rsync.git] / lib / addrinfo.h

diff --git a/lib/addrinfo.h b/lib/addrinfo.h
new file mode 100644 (file)
index 0000000..f3899e5
--- /dev/null
+++ b/lib/addrinfo.h
@@ -0,0 +1,174 @@
+/*
+PostgreSQL Database Management System
+(formerly known as Postgres, then as Postgres95)
+
+Portions Copyright (c) 1996-2005, The PostgreSQL Global Development Group
+
+Portions Copyright (c) 1994, The Regents of the University of California
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose, without fee, and without a written agreement
+is hereby granted, provided that the above copyright notice and this paragraph
+and the following two paragraphs appear in all copies.
+
+IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
+LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,
+EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+
+THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS
+TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+*/
+
+/*-------------------------------------------------------------------------
+ *
+ * getaddrinfo.h
+ *       Support getaddrinfo() on platforms that don't have it.
+ *
+ * Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO,
+ * whether or not the library routine getaddrinfo() can be found.  This
+ * policy is needed because on some platforms a manually installed libbind.a
+ * may provide getaddrinfo(), yet the system headers may not provide the
+ * struct definitions needed to call it.  To avoid conflict with the libbind
+ * definition in such cases, we rename our routines to pg_xxx() via macros.
+ *
+ * This code will also work on platforms where struct addrinfo is defined
+ * in the system headers but no getaddrinfo() can be located.
+ *
+ * Copyright (c) 2003-2007, PostgreSQL Global Development Group
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef ADDRINFO_H
+#define ADDRINFO_H
+
+
+/* Various macros that ought to be in <netdb.h>, but might not be */
+
+#ifndef EAI_FAIL
+#define EAI_BADFLAGS   (-1)
+#define EAI_NONAME             (-2)
+#define EAI_AGAIN              (-3)
+#define EAI_FAIL               (-4)
+#define EAI_FAMILY             (-6)
+#define EAI_SOCKTYPE   (-7)
+#define EAI_SERVICE            (-8)
+#define EAI_MEMORY             (-10)
+#define EAI_SYSTEM             (-11)
+#endif   /* !EAI_FAIL */
+
+#ifndef AI_PASSIVE
+#define AI_PASSIVE             0x0001
+#endif
+
+#ifndef AI_NUMERICHOST
+/*
+ * some platforms don't support AI_NUMERICHOST; define as zero if using
+ * the system version of getaddrinfo...
+ */
+#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO)
+#define AI_NUMERICHOST 0
+#else
+#define AI_NUMERICHOST 0x0004
+#endif
+#endif
+
+#ifndef AI_CANONNAME
+#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO)
+#define AI_CANONNAME 0
+#else
+#define AI_CANONNAME 0x0008
+#endif
+#endif
+
+#ifndef AI_NUMERICSERV
+#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO)
+#define AI_NUMERICSERV 0
+#else
+#define AI_NUMERICSERV 0x0010
+#endif
+#endif
+
+#ifndef NI_NUMERICHOST
+#define NI_NUMERICHOST 1
+#endif
+
+#ifndef NI_NUMERICSERV
+#define NI_NUMERICSERV 2
+#endif
+
+#ifndef NI_NOFQDN
+#define NI_NOFQDN      4
+#endif
+
+#ifndef NI_NAMEREQD
+#define NI_NAMEREQD    8
+#endif
+
+#ifndef NI_DGRAM
+#define NI_DGRAM       16
+#endif
+
+
+#ifndef NI_MAXHOST
+#define NI_MAXHOST     1025
+#endif
+
+#ifndef NI_MAXSERV
+#define NI_MAXSERV     32
+#endif
+
+#ifndef HAVE_STRUCT_ADDRINFO
+
+struct addrinfo
+{
+       int                     ai_flags;
+       int                     ai_family;
+       int                     ai_socktype;
+       int                     ai_protocol;
+       size_t          ai_addrlen;
+       struct sockaddr *ai_addr;
+       char       *ai_canonname;
+       struct addrinfo *ai_next;
+};
+#endif   /* HAVE_STRUCT_ADDRINFO */
+
+
+#ifndef HAVE_GETADDRINFO
+
+/* Rename private copies per comments above */
+#ifdef getaddrinfo
+#undef getaddrinfo
+#endif
+#define getaddrinfo pg_getaddrinfo
+
+#ifdef freeaddrinfo
+#undef freeaddrinfo
+#endif
+#define freeaddrinfo pg_freeaddrinfo
+
+#ifdef gai_strerror
+#undef gai_strerror
+#endif
+#define gai_strerror pg_gai_strerror
+
+#ifdef getnameinfo
+#undef getnameinfo
+#endif
+#define getnameinfo pg_getnameinfo
+
+extern int getaddrinfo(const char *node, const char *service,
+                       const struct addrinfo * hints, struct addrinfo ** res);
+extern void freeaddrinfo(struct addrinfo * res);
+extern const char *gai_strerror(int errcode);
+extern int getnameinfo(const struct sockaddr * sa, socklen_t salen,
+                       char *node, size_t nodelen,
+                       char *service, size_t servicelen, int flags);
+#endif   /* HAVE_GETADDRINFO */
+
+#endif   /* ADDRINFO_H */