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

   1 /*      $NetBSD: errorlist.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 #include "windlocl.h"
  37
  38 #include <stdlib.h>
  39
  40 #include "errorlist_table.h"
  41
  42 static int
  43 error_entry_cmp(const void *a, const void *b)
  44 {
  45     const struct error_entry *ea = (const struct error_entry*)a;
  46     const struct error_entry *eb = (const struct error_entry*)b;
  47
  48     if (ea->start >= eb->start && ea->start < eb->start + eb->len)
  49         return 0;
  50     return ea->start - eb->start;
  51 }
  52
  53 int
  54 _wind_stringprep_error(const uint32_t cp, wind_profile_flags flags)
  55 {
  56     struct error_entry ee = {cp};
  57     const struct error_entry *s;
  58
  59     s = (const struct error_entry *)
  60         bsearch(&ee, _wind_errorlist_table,
  61                 _wind_errorlist_table_size,
  62                 sizeof(_wind_errorlist_table[0]),
  63                 error_entry_cmp);
  64     if (s == NULL)
  65         return 0;
  66     return (s->flags & flags);
  67 }
  68
  69 int
  70 _wind_stringprep_prohibited(const uint32_t *in, size_t in_len,
  71                             wind_profile_flags flags)
  72 {
  73     unsigned i;
  74
  75     for (i = 0; i < in_len; ++i)
  76         if (_wind_stringprep_error(in[i], flags))
  77             return 1;
  78     return 0;
  79 }