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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr_strings.h"
#include "ap_config.h"
#include "ap_provider.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include "http_request.h"
#include "mod_auth.h"
typedef struct {
int dummy; /* just here to stop compiler warnings for now. */
} authz_user_config_rec;
static void *create_authz_user_dir_config(apr_pool_t *p, char *d)
{
authz_user_config_rec *conf = apr_palloc(p, sizeof(*conf));
return conf;
}
static const command_rec authz_user_cmds[] =
{
{NULL}
};
module AP_MODULE_DECLARE_DATA authz_user_module;
static authz_status user_check_authorization(request_rec *r,
const char *require_args,
const void *parsed_require_args)
{
const char *err = NULL;
const ap_expr_info_t *expr = parsed_require_args;
const char *require;
const char *t, *w;
if (!r->user) {
return AUTHZ_DENIED_NO_USER;
}
require = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02594)
"authz_user authorize: require user: Can't "
"evaluate require expression: %s", err);
return AUTHZ_DENIED;
}
t = require;
while ((w = ap_getword_conf(r->pool, &t)) && w[0]) {
if (!strcmp(r->user, w)) {
return AUTHZ_GRANTED;
}
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01663)
"access to %s failed, reason: user '%s' does not meet "
"'require'ments for user to be allowed access",
r->uri, r->user);
return AUTHZ_DENIED;
}
static authz_status validuser_check_authorization(request_rec *r,
const char *require_line,
const void *parsed_require_line)
{
if (!r->user) {
return AUTHZ_DENIED_NO_USER;
}
return AUTHZ_GRANTED;
}
static const char *user_parse_config(cmd_parms *cmd, const char *require_line,
const void **parsed_require_line)
{
const char *expr_err = NULL;
ap_expr_info_t *expr;
expr = ap_expr_parse_cmd(cmd, require_line, AP_EXPR_FLAG_STRING_RESULT,
&expr_err, NULL);
if (expr_err)
return apr_pstrcat(cmd->temp_pool,
"Cannot parse expression in require line: ",
expr_err, NULL);
*parsed_require_line = expr;
return NULL;
}
static const authz_provider authz_user_provider =
{
&user_check_authorization,
&user_parse_config,
};
static const authz_provider authz_validuser_provider =
{
&validuser_check_authorization,
NULL,
};
static void register_hooks(apr_pool_t *p)
{
ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "user",
AUTHZ_PROVIDER_VERSION,
&authz_user_provider, AP_AUTH_INTERNAL_PER_CONF);
ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "valid-user",
AUTHZ_PROVIDER_VERSION,
&authz_validuser_provider,
AP_AUTH_INTERNAL_PER_CONF);
}
AP_DECLARE_MODULE(authz_user) =
{
STANDARD20_MODULE_STUFF,
create_authz_user_dir_config, /* dir config creater */
NULL, /* dir merger --- default is to override */
NULL, /* server config */
NULL, /* merge server config */
authz_user_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};