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/* _ _
** _ __ ___ ___ __| | ___ ___| | mod_ssl
** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org
** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org
** |_____|
** ssl_expr.c
** Expression Handling
*/
/* ====================================================================
* Copyright (c) 1998-2003 Ralf S. Engelschall. 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. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by
* Ralf S. Engelschall <rse@engelschall.com> for use in the
* mod_ssl project (http://www.modssl.org/)."
*
* 4. The names "mod_ssl" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* rse@engelschall.com.
*
* 5. Products derived from this software may not be called "mod_ssl"
* nor may "mod_ssl" appear in their names without prior
* written permission of Ralf S. Engelschall.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by
* Ralf S. Engelschall <rse@engelschall.com> for use in the
* mod_ssl project (http://www.modssl.org/)."
*
* THIS SOFTWARE IS PROVIDED BY RALF S. ENGELSCHALL ``AS IS'' AND ANY
* EXPRESSED 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 RALF S. ENGELSCHALL OR
* HIS 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.
* ====================================================================
*/
/* ``It is hard to fly with
the eagles when you work
with the turkeys.''
-- Unknown */
#include "mod_ssl.h"
/* _________________________________________________________________
**
** Expression Handling
** _________________________________________________________________
*/
ssl_expr_info_type ssl_expr_info;
char *ssl_expr_error;
ssl_expr *ssl_expr_comp(pool *p, char *expr)
{
ssl_expr_info.pool = p;
ssl_expr_info.inputbuf = expr;
ssl_expr_info.inputlen = strlen(expr);
ssl_expr_info.inputptr = ssl_expr_info.inputbuf;
ssl_expr_info.expr = FALSE;
ssl_expr_error = NULL;
if (ssl_expr_yyparse())
return NULL;
return ssl_expr_info.expr;
}
char *ssl_expr_get_error(void)
{
if (ssl_expr_error == NULL)
return "";
return ssl_expr_error;
}
ssl_expr *ssl_expr_make(ssl_expr_node_op op, void *a1, void *a2)
{
ssl_expr *node;
node = (ssl_expr *)ap_palloc(ssl_expr_info.pool, sizeof(ssl_expr));
node->node_op = op;
node->node_arg1 = (char *)a1;
node->node_arg2 = (char *)a2;
return node;
}
int ssl_expr_exec(request_rec *r, ssl_expr *expr)
{
BOOL rc;
rc = ssl_expr_eval(r, expr);
if (ssl_expr_error != NULL)
return (-1);
else
return (rc ? 1 : 0);
}
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