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      1 /*	$NetBSD: errorlist.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2004 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 "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, 0, 0};
     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 }
     80