xref: /freebsd-11-stable/crypto/heimdal/lib/wind/errorlist.c

/*
 * Copyright (c) 2004 Kungliga Tekniska H��gskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "windlocl.h"

#include <stdlib.h>

#include "errorlist_table.h"

static int
error_entry_cmp(const void *a, const void *b)
{
    const struct error_entry *ea = (const struct error_entry*)a;
    const struct error_entry *eb = (const struct error_entry*)b;

    if (ea->start >= eb->start && ea->start < eb->start + eb->len)
	return 0;
    return ea->start - eb->start;
}

int
_wind_stringprep_error(const uint32_t cp, wind_profile_flags flags)
{
    struct error_entry ee = {cp};
    const struct error_entry *s;

    s = (const struct error_entry *)
	bsearch(&ee, _wind_errorlist_table,
		_wind_errorlist_table_size,
		sizeof(_wind_errorlist_table[0]),
		error_entry_cmp);
    if (s == NULL)
	return 0;
    return (s->flags & flags);
}

int
_wind_stringprep_prohibited(const uint32_t *in, size_t in_len,
			    wind_profile_flags flags)
{
    unsigned i;

    for (i = 0; i < in_len; ++i)
	if (_wind_stringprep_error(in[i], flags))
	    return 1;
    return 0;
}