(svn r27092) -Fix/Add [FS#6186]: Compilation on OS/2 (smedles)

src/3rdparty/os2/getaddrinfo.h

@@ -0,0 +1,101 @@
+#ifndef _getaddrinfo_h
+#define _getaddrinfo_h
+
+/*
+ *  Shamelessly duplicated from the fetchmail public sources
+ *  for use by the Squid Project under GNU Public License.
+ *
+ * Update/Maintenance History:
+ *
+ *    15-Aug-2007 : Copied from fetchmail 6.3.8
+ *			- added protection around libray headers
+ *
+ *    16-Aug-2007 : Altered configure checks
+ *                  Un-hacked slightly to use system gethostbyname()
+ *
+ *  Original License and code follows.
+ */
+
+/*
+ *  This file is part of libESMTP, a library for submission of RFC 2822
+ *  formatted electronic mail messages using the SMTP protocol described
+ *  in RFC 2821.
+ *
+ *  Copyright (C) 2001,2002  Brian Stafford  <brian@stafford.uklinux.net>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* Structure and prototypes taken from RFC 2553 */
+
+/* SG 23/09/2007:
+On Windows the following definitions are already available, may be that
+this could be needed on some other platform */
+typedef int socklen_t;
+
+struct addrinfo {
+    int ai_flags;  	  	/* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
+    int ai_family; 	  	/* PF_xxx */
+    int ai_socktype;	 	/* SOCK_xxx */
+    int ai_protocol;	 	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+    socklen_t ai_addrlen;	/* length of ai_addr */
+    char *ai_canonname;		/* canonical name for nodename */
+    struct sockaddr *ai_addr;	/* binary address */
+    struct addrinfo *ai_next;	/* next structure in linked list */
+};
+
+/* Supposed to be defined in <netdb.h> */
+#define AI_ADDRCONFIG  0
+#define AI_PASSIVE     1       /* Socket address is intended for `bind'.  */
+#define AI_CANONNAME   2       /* Request for canonical name.  */
+#define AI_NUMERICHOST 4       /* Don't use name resolution.  */
+
+/* Supposed to be defined in <netdb.h> */
+#define EAI_ADDRFAMILY 1   /* address family for nodename not supported */
+#define EAI_AGAIN      2   /* temporary failure in name resolution */
+#define EAI_BADFLAGS   3   /* invalid value for ai_flags */
+#define EAI_FAIL       4   /* non-recoverable failure in name resolution */
+#define EAI_FAMILY     5   /* ai_family not supported */
+#define EAI_MEMORY     6   /* memory allocation failure */
+#define EAI_NODATA     7   /* no address associated with nodename */
+#define EAI_NONAME     8   /* nodename nor servname provided, or not known */
+#define EAI_SERVICE    9   /* servname not supported for ai_socktype */
+#define EAI_SOCKTYPE   10  /* ai_socktype not supported */
+
+#ifndef EAI_SYSTEM
+/* Not defined on mingw32. */
+#define EAI_SYSTEM     11  /* System error returned in `errno'.  */
+#endif
+#ifndef EAI_OVERFLOW
+/* Not defined on mingw32. */
+#define EAI_OVERFLOW   12 /* Argument buffer overflow.  */
+#endif
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+/* RFC 2553 / Posix resolver */
+int getaddrinfo (const char *nodename, const char *servname,
+                               const struct addrinfo *hints, struct addrinfo **res);
+/* Free addrinfo structure and associated storage */
+void freeaddrinfo (struct addrinfo *ai);
+
+/* Convert error return from getaddrinfo() to string */
+const char *gai_strerror (int code);
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _getaddrinfo_h */