crypto/external/bsd/heimdal/dist/lib/wind/idn-lookup.c

   1 /*      $NetBSD: idn-lookup.c,v 1.1.1.1 2011/04/13 18:15:58 elric Exp $ */
   2
   3 /*
   4  * Copyright (c) 2004 Kungliga Tekniska Högskolan
   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 #ifdef HAVE_CONFIG_H
  37 #include <config.h>
  38 #endif
  39 #include <assert.h>
  40 #include <err.h>
  41 #include <netdb.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <sys/socket.h>
  46 #include <sys/types.h>
  47
  48 #include <krb5/getarg.h>
  49 #include <krb5/roken.h>
  50
  51 #include "windlocl.h"
  52
  53 static int version_flag = 0;
  54 static int help_flag    = 0;
  55
  56
  57 static int
  58 is_separator(uint32_t u)
  59 {
  60     return u == 0x002E || u == 0x3002;
  61 }
  62
  63 static void
  64 lookup(const char *name)
  65 {
  66     unsigned i;
  67     char encoded[1024];
  68     char *ep;
  69     int ret;
  70     struct addrinfo hints;
  71     struct addrinfo *ai;
  72
  73     size_t u_len = strlen(name);
  74     uint32_t *u = malloc(u_len * sizeof(uint32_t));
  75     size_t norm_len = u_len * 2;
  76     uint32_t *norm = malloc(norm_len * sizeof(uint32_t));
  77
  78     if (u == NULL && u_len != 0)
  79         errx(1, "malloc failed");
  80     if (norm == NULL && norm_len != 0)
  81         errx(1, "malloc failed");
  82
  83     ret = wind_utf8ucs4(name, u, &u_len);
  84     if (ret)
  85         errx(1, "utf8 conversion failed");
  86     ret = wind_stringprep(u, u_len, norm, &norm_len, WIND_PROFILE_NAME);
  87     if (ret)
  88         errx(1, "stringprep failed");
  89     free(u);
  90
  91     ep = encoded;
  92     for (i = 0; i < norm_len; ++i) {
  93         unsigned j;
  94         size_t len;
  95
  96         for (j = i; j < norm_len && !is_separator(norm[j]); ++j)
  97             ;
  98         len = sizeof(encoded) - (ep - encoded);
  99         ret = wind_punycode_label_toascii(norm + i, j - i, ep, &len);
 100         if (ret)
 101             errx(1, "punycode failed");
 102
 103         ep += len;
 104         *ep++ = '.';
 105         i = j;
 106     }
 107     *ep = '\0';
 108     free(norm);
 109
 110     printf("Converted \"%s\" into \"%s\"\n", name, encoded);
 111
 112     memset(&hints, 0, sizeof(hints));
 113     hints.ai_flags = AI_CANONNAME;
 114     ret = getaddrinfo(encoded, NULL, &hints, &ai);
 115     if(ret)
 116         errx(1, "getaddrinfo failed: %s", gai_strerror(ret));
 117     printf("canonical-name: %s\n", ai->ai_canonname);
 118     freeaddrinfo(ai);
 119 }
 120
 121 static struct getargs args[] = {
 122     {"version", 0,      arg_flag,       &version_flag,
 123      "print version", NULL },
 124     {"help",    0,      arg_flag,       &help_flag,
 125      NULL, NULL }
 126 };
 127
 128 static void
 129 usage (int ret)
 130 {
 131     arg_printusage(args, sizeof(args)/sizeof(args[0]), NULL,
 132                    "dns-names ...");
 133     exit (ret);
 134 }
 135
 136 int
 137 main(int argc, char **argv)
 138 {
 139     int optidx = 0;
 140     unsigned i;
 141
 142     setprogname (argv[0]);
 143
 144     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 145         usage(1);
 146
 147     if (help_flag)
 148         usage (0);
 149
 150     if(version_flag){
 151         print_version(NULL);
 152         exit(0);
 153     }
 154
 155     argc -= optidx;
 156     argv += optidx;
 157
 158     if (argc == 0)
 159         usage(1);
 160
 161     for (i = 0; i < argc; ++i)
 162         lookup(argv[i]);
 163     return 0;
 164 }