| /* 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 */ |
| }; |