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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2004 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``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 THE APACHE SOFTWARE FOUNDATION OR
* ITS 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
/*
* http_auth: authentication
*
* Rob McCool
*
* Adapted to Apache by rst.
*
* dirkx - Added Authoritative control to allow passing on to lower
* modules if and only if the userid is not known to this
* module. A known user with a faulty or absent password still
* causes an AuthRequired. The default is 'Authoritative', i.e.
* no control is passed along.
*/
#include "apr_strings.h"
#include "apr_md5.h" /* for apr_password_validate */
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include "http_request.h"
typedef struct {
int authoritative;
} authz_default_config_rec;
static void *create_authz_default_dir_config(apr_pool_t *p, char *d)
{
authz_default_config_rec *conf = apr_palloc(p, sizeof(*conf));
conf->authoritative = 1; /* keep the fortress secure by default */
return conf;
}
static const command_rec authz_default_cmds[] =
{
AP_INIT_FLAG("AuthzDefaultAuthoritative", ap_set_flag_slot,
(void *)APR_OFFSETOF(authz_default_config_rec, authoritative),
OR_AUTHCFG,
"Set to 'Off' to allow access control to be passed along to "
"lower modules. (default is On.)"),
{NULL}
};
module AP_MODULE_DECLARE_DATA authz_default_module;
static int check_user_access(request_rec *r)
{
authz_default_config_rec *conf = ap_get_module_config(r->per_dir_config,
&authz_default_module);
int m = r->method_number;
int method_restricted = 0;
register int x;
const apr_array_header_t *reqs_arr = ap_requires(r);
require_line *reqs;
/* BUG FIX: tadc, 11-Nov-1995. If there is no "requires" directive,
* then any user will do.
*/
if (!reqs_arr) {
return OK;
}
reqs = (require_line *)reqs_arr->elts;
for (x = 0; x < reqs_arr->nelts; x++) {
if (!(reqs[x].method_mask & (AP_METHOD_BIT << m))) {
continue;
}
method_restricted = 1;
break;
}
if (method_restricted == 0) {
return OK;
}
if (!(conf->authoritative)) {
return DECLINED;
}
/* if we aren't authoritative, any require directive could be
* considered valid even if noone groked it. However, if we are
* authoritative, we can warn the user they did something wrong.
*
* That something could be a missing "AuthAuthoritative off", but
* more likely is a typo in the require directive.
*/
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"access to %s failed, reason: require directives "
"present and no Authoritative handler.", r->uri);
ap_note_auth_failure(r);
return HTTP_UNAUTHORIZED;
}
static void register_hooks(apr_pool_t *p)
{
ap_hook_auth_checker(check_user_access,NULL,NULL,APR_HOOK_LAST);
}
module AP_MODULE_DECLARE_DATA authz_default_module =
{
STANDARD20_MODULE_STUFF,
create_authz_default_dir_config, /* dir config creater */
NULL, /* dir merger --- default is to override */
NULL, /* server config */
NULL, /* merge server config */
authz_default_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};
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