crypto/external/bsd/heimdal/dist/lib/wind/map.c

   1 /*      $NetBSD: map.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 "windlocl.h"
  40
  41 #include <stdlib.h>
  42
  43 #include "map_table.h"
  44
  45 static int
  46 translation_cmp(const void *key, const void *data)
  47 {
  48     const struct translation *t1 = (const struct translation *)key;
  49     const struct translation *t2 = (const struct translation *)data;
  50
  51     return t1->key - t2->key;
  52 }
  53
  54 int
  55 _wind_stringprep_map(const uint32_t *in, size_t in_len,
  56                      uint32_t *out, size_t *out_len,
  57                      wind_profile_flags flags)
  58 {
  59     unsigned i;
  60     unsigned o = 0;
  61
  62     for (i = 0; i < in_len; ++i) {
  63         struct translation ts = {in[i]};
  64         const struct translation *s;
  65
  66         s = (const struct translation *)
  67             bsearch(&ts, _wind_map_table, _wind_map_table_size,
  68                     sizeof(_wind_map_table[0]),
  69                     translation_cmp);
  70         if (s != NULL && (s->flags & flags)) {
  71             unsigned j;
  72
  73             for (j = 0; j < s->val_len; ++j) {
  74                 if (o >= *out_len)
  75                     return WIND_ERR_OVERRUN;
  76                 out[o++] = _wind_map_table_val[s->val_offset + j];
  77             }
  78         } else {
  79             if (o >= *out_len)
  80                 return WIND_ERR_OVERRUN;
  81             out[o++] = in[i];
  82
  83         }
  84     }
  85     *out_len = o;
  86     return 0;
  87 }