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      1 /*	$NetBSD: gai_strerror.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <config.h>
     37 
     38 #include <krb5/roken.h>
     39 
     40 static struct gai_error {
     41     int code;
     42     const char *str;
     43 } errors[] = {
     44 {EAI_NOERROR,		"no error"},
     45 #ifdef EAI_ADDRFAMILY
     46 {EAI_ADDRFAMILY,	"address family for nodename not supported"},
     47 #endif
     48 {EAI_AGAIN,		"temporary failure in name resolution"},
     49 {EAI_BADFLAGS,		"invalid value for ai_flags"},
     50 {EAI_FAIL,		"non-recoverable failure in name resolution"},
     51 {EAI_FAMILY,		"ai_family not supported"},
     52 {EAI_MEMORY,		"memory allocation failure"},
     53 #ifdef EAI_NODATA
     54 {EAI_NODATA,		"no address associated with nodename"},
     55 #endif
     56 {EAI_NONAME,		"nodename nor servname provided, or not known"},
     57 {EAI_SERVICE,		"servname not supported for ai_socktype"},
     58 {EAI_SOCKTYPE,		"ai_socktype not supported"},
     59 {EAI_SYSTEM,		"system error returned in errno"},
     60 {0,			NULL},
     61 };
     62 
     63 /*
     64  *
     65  */
     66 
     67 ROKEN_LIB_FUNCTION const char * ROKEN_LIB_CALL
     68 gai_strerror(int ecode)
     69 {
     70     struct gai_error *g;
     71 
     72     for (g = errors; g->str != NULL; ++g)
     73 	if (g->code == ecode)
     74 	    return g->str;
     75     return "unknown error code in gai_strerror";
     76 }
     77