safe_str_constraint.c

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/*------------------------------------------------------------------
 * safe_str_constraint.c
 *
 * October 2008, Bo Berry
 * 2012, Jonathan Toppins <jtoppins@users.sourceforge.net>
 *
 * Copyright (c) 2008, 2009, 2012 Cisco Systems
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *------------------------------------------------------------------
 */

#include "safeclib_private.h"
#include "safe_str_constraint.h"
#include "safe_str_lib.h"


static constraint_handler_t str_handler = NULL;


constraint_handler_t
set_str_constraint_handler_s (constraint_handler_t handler)
{
    constraint_handler_t prev_handler = str_handler;
    if (NULL == handler) {
        str_handler = sl_default_handler;
    } else {
        str_handler = handler;
    }
    return prev_handler;
}
EXPORT_SYMBOL(set_str_constraint_handler_s)



void
invoke_safe_str_constraint_handler (const char *msg,
                                    void *ptr,
                                    errno_t error)
{
    if (NULL != str_handler) {
        str_handler(msg, ptr, error);
    } else {
        sl_default_handler(msg, ptr, error);
    }
}