Quelle mod_authz_user.c Sprache: C

/* 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 */
};

quality97%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.