src/3rdparty/os2/getaddrinfo.h

   1 #ifndef _getaddrinfo_h
   2 #define _getaddrinfo_h
   3
   4 /*
   5  *  Shamelessly duplicated from the fetchmail public sources
   6  *  for use by the Squid Project under GNU Public License.
   7  *
   8  * Update/Maintenance History:
   9  *
  10  *    15-Aug-2007 : Copied from fetchmail 6.3.8
  11  *                      - added protection around libray headers
  12  *
  13  *    16-Aug-2007 : Altered configure checks
  14  *                  Un-hacked slightly to use system gethostbyname()
  15  *
  16  *  Original License and code follows.
  17  */
  18
  19 /*
  20  *  This file is part of libESMTP, a library for submission of RFC 2822
  21  *  formatted electronic mail messages using the SMTP protocol described
  22  *  in RFC 2821.
  23  *
  24  *  Copyright (C) 2001,2002  Brian Stafford  <brian@stafford.uklinux.net>
  25  *
  26  *  This library is free software; you can redistribute it and/or
  27  *  modify it under the terms of the GNU Lesser General Public
  28  *  License as published by the Free Software Foundation; either
  29  *  version 2.1 of the License, or (at your option) any later version.
  30  *
  31  *  This library is distributed in the hope that it will be useful,
  32  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  33  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  34  *  Lesser General Public License for more details.
  35  *
  36  *  You should have received a copy of the GNU Lesser General Public
  37  *  License along with this library; if not, write to the Free Software
  38  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  39  */
  40
  41 /* Structure and prototypes taken from RFC 2553 */
  42
  43 /* SG 23/09/2007:
  44 On Windows the following definitions are already available, may be that
  45 this could be needed on some other platform */
  46 typedef int socklen_t;
  47
  48 struct addrinfo {
  49     int ai_flags;               /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
  50     int ai_family;              /* PF_xxx */
  51     int ai_socktype;            /* SOCK_xxx */
  52     int ai_protocol;            /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
  53     socklen_t ai_addrlen;       /* length of ai_addr */
  54     char *ai_canonname;         /* canonical name for nodename */
  55     struct sockaddr *ai_addr;   /* binary address */
  56     struct addrinfo *ai_next;   /* next structure in linked list */
  57 };
  58
  59 /* Supposed to be defined in <netdb.h> */
  60 #define AI_ADDRCONFIG  0
  61 #define AI_PASSIVE     1       /* Socket address is intended for `bind'.  */
  62 #define AI_CANONNAME   2       /* Request for canonical name.  */
  63 #define AI_NUMERICHOST 4       /* Don't use name resolution.  */
  64
  65 /* Supposed to be defined in <netdb.h> */
  66 #define EAI_ADDRFAMILY 1   /* address family for nodename not supported */
  67 #define EAI_AGAIN      2   /* temporary failure in name resolution */
  68 #define EAI_BADFLAGS   3   /* invalid value for ai_flags */
  69 #define EAI_FAIL       4   /* non-recoverable failure in name resolution */
  70 #define EAI_FAMILY     5   /* ai_family not supported */
  71 #define EAI_MEMORY     6   /* memory allocation failure */
  72 #define EAI_NODATA     7   /* no address associated with nodename */
  73 #define EAI_NONAME     8   /* nodename nor servname provided, or not known */
  74 #define EAI_SERVICE    9   /* servname not supported for ai_socktype */
  75 #define EAI_SOCKTYPE   10  /* ai_socktype not supported */
  76
  77 #ifndef EAI_SYSTEM
  78 /* Not defined on mingw32. */
  79 #define EAI_SYSTEM     11  /* System error returned in `errno'.  */
  80 #endif
  81 #ifndef EAI_OVERFLOW
  82 /* Not defined on mingw32. */
  83 #define EAI_OVERFLOW   12 /* Argument buffer overflow.  */
  84 #endif
  85
  86 #ifdef  __cplusplus
  87 extern "C" {
  88 #endif
  89 /* RFC 2553 / Posix resolver */
  90 int getaddrinfo (const char *nodename, const char *servname,
  91                                const struct addrinfo *hints, struct addrinfo **res);
  92 /* Free addrinfo structure and associated storage */
  93 void freeaddrinfo (struct addrinfo *ai);
  94
  95 /* Convert error return from getaddrinfo() to string */
  96 const char *gai_strerror (int code);
  97 #ifdef  __cplusplus
  98 }
  99 #endif
 100
 101 #endif /* _getaddrinfo_h */