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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. */ /** * @file mod_auth.h * @brief Authentication and Authorization Extension for Apache * * @defgroup MOD_AUTH mod_auth * @ingroup APACHE_MODS */ #ifndef APACHE_MOD_AUTH_H #define APACHE_MOD_AUTH_H #include "apr_pools.h" #include "apr_hash.h" #include "apr_optional.h" #include "httpd.h" #include "http_config.h" #ifdef __cplusplus extern "C" { #endif #define AUTHN_PROVIDER_GROUP "authn" #define AUTHZ_PROVIDER_GROUP "authz" #define AUTHN_PROVIDER_VERSION "0" #define AUTHZ_PROVIDER_VERSION "0" #define AUTHN_DEFAULT_PROVIDER "file" #define AUTHN_PROVIDER_NAME_NOTE "authn_provider_name" #define AUTHZ_PROVIDER_NAME_NOTE "authz_provider_name" #define AUTHN_PREFIX "AUTHENTICATE_" #define AUTHZ_PREFIX "AUTHORIZE_" /** all of the requirements must be met */ #ifndef SATISFY_ALL #define SATISFY_ALL 0 #endif /** any of the requirements must be met */ #ifndef SATISFY_ANY #define SATISFY_ANY 1 #endif /** There are no applicable satisfy lines */ #ifndef SATISFY_NOSPEC #define SATISFY_NOSPEC 2 #endif typedef enum { AUTH_DENIED, AUTH_GRANTED, AUTH_USER_FOUND, AUTH_USER_NOT_FOUND, AUTH_GENERAL_ERROR } authn_status; typedef enum { AUTHZ_DENIED, AUTHZ_GRANTED, AUTHZ_NEUTRAL, AUTHZ_GENERAL_ERROR, AUTHZ_DENIED_NO_USER /* denied because r->user == NULL */ } authz_status; typedef struct { /* Given a username and password, expected to return AUTH_GRANTED * if we can validate this user/password combination. */ authn_status (*check_password)(request_rec *r, const char *user, const char *password); /* Given a user and realm, expected to return AUTH_USER_FOUND if we * can find a md5 hash of 'user:realm:password' */ authn_status (*get_realm_hash)(request_rec *r, const char *user, const char *realm, char **rethash); } authn_provider; /* A linked-list of authn providers. */ typedef struct authn_provider_list authn_provider_list; struct authn_provider_list { const char *provider_name; const authn_provider *provider; authn_provider_list *next; }; typedef struct { /* Given a request_rec, expected to return AUTHZ_GRANTED * if we can authorize user access. * @param r the request record * @param require_line the argument to the authz provider * @param parsed_require_line the value set by parse_require_line(), if any */ authz_status (*check_authorization)(request_rec *r, const char *require_line, const void *parsed_require_line); /** Check the syntax of a require line and optionally cache the parsed * line. This function may be NULL. * @param cmd the config directive * @param require_line the argument to the authz provider * @param parsed_require_line place to store parsed require_line for use by provider * @return Error message or NULL on success */ const char *(*parse_require_line)(cmd_parms *cmd, const char *require_line, const void **parsed_require_line); } authz_provider; /* ap_authn_cache_store: Optional function for authn providers * to enable caching their lookups with mod_authn_cache * @param r The request rec * @param module Module identifier * @param user User name to authenticate * @param realm Digest authn realm (NULL for basic authn) * @param data The value looked up by the authn provider, to cache */ APR_DECLARE_OPTIONAL_FN(void, ap_authn_cache_store, (request_rec*, const char*, const char*, const char*, const char*)); #ifdef __cplusplus } #endif #endif