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/*
* VerifySSID function (UTF-8 supported)
*
* Copyright (C) 2018 ZhaoChunsheng
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. * If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. * If you
* do not wish to do so, delete this exception statement from your
* version. * If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "aircrack-ng/utf8/verifyssid.h"
int verifyssid(const unsigned char * s)
{
int i;
unsigned char c;
if (!s || strlen((const char *) s) > 32)
{ // 32 characters
return 0;
}
for (i = 0; (c = s[i++]);)
{
if ((c & 0x80) == 0)
{ // ascii flag
if (c < 0x20 || c == 0x7f)
{
return 0;
}
}
else if ((c & 0xe0) == 0xc0)
{ // utf8 flag
if ((s[i++] & 0xc0) != 0x80)
{
return 0;
}
}
else if ((c & 0xf0) == 0xe0)
{ // utf8 flag
if ((s[i++] & 0xc0) != 0x80 || (s[i++] & 0xc0) != 0x80)
{
return 0;
}
}
else if ((c & 0xf8) == 0xf0)
{ // utf8 flag
if ((s[i++] & 0xc0) != 0x80 || (s[i++] & 0xc0) != 0x80
|| (s[i++] & 0xc0) != 0x80)
{
return 0;
}
}
else
{
return 0;
}
}
return 1;
}
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