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d4d90bdf0a
binary (Suexec Off), or force startup failure if suEXEC is required but not supported (Suexec On). Change SuexecUserGroup to fail startup instead of just printing a warning if suEXEC is disabled. Additionally, ap_unixd_config.suexec_disabled_reason has a message, suitable for logging/messaging, explaining why the feature isn't available. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1033519 13f79535-47bb-0310-9956-ffa450edef68
140 lines
4.3 KiB
C
140 lines
4.3 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "httpd.h"
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#include "http_config.h"
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#include "http_core.h"
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#include "http_log.h"
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#include "http_request.h"
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#include "apr_strings.h"
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#include "unixd.h"
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#include "mpm_common.h"
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#include "mod_suexec.h"
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module AP_MODULE_DECLARE_DATA suexec_module;
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/*
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* Create a configuration specific to this module for a server or directory
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* location, and fill it with the default settings.
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*/
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static void *mkconfig(apr_pool_t *p)
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{
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suexec_config_t *cfg = apr_palloc(p, sizeof(suexec_config_t));
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cfg->active = 0;
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return cfg;
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}
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/*
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* Respond to a callback to create configuration record for a server or
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* vhost environment.
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*/
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static void *create_mconfig_for_server(apr_pool_t *p, server_rec *s)
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{
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return mkconfig(p);
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}
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/*
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* Respond to a callback to create a config record for a specific directory.
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*/
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static void *create_mconfig_for_directory(apr_pool_t *p, char *dir)
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{
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return mkconfig(p);
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}
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static const char *set_suexec_ugid(cmd_parms *cmd, void *mconfig,
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const char *uid, const char *gid)
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{
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suexec_config_t *cfg = (suexec_config_t *) mconfig;
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const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
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if (err != NULL) {
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return err;
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}
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if (!ap_unixd_config.suexec_enabled) {
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return apr_pstrcat(cmd->pool, "SuexecUserGroup configured, but "
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"suEXEC is disabled: ",
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ap_unixd_config.suexec_disabled_reason, NULL);
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}
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cfg->ugid.uid = ap_uname2id(uid);
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cfg->ugid.gid = ap_gname2id(gid);
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cfg->ugid.userdir = 0;
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cfg->active = 1;
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return NULL;
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}
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static ap_unix_identity_t *get_suexec_id_doer(const request_rec *r)
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{
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suexec_config_t *cfg =
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(suexec_config_t *) ap_get_module_config(r->per_dir_config, &suexec_module);
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return cfg->active ? &cfg->ugid : NULL;
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}
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#define SUEXEC_POST_CONFIG_USERDATA "suexec_post_config_userdata"
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static int suexec_post_config(apr_pool_t *p, apr_pool_t *plog,
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apr_pool_t *ptemp, server_rec *s)
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{
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void *reported;
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apr_pool_userdata_get(&reported, SUEXEC_POST_CONFIG_USERDATA,
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s->process->pool);
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if ((reported == NULL) && ap_unixd_config.suexec_enabled) {
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ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s,
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"suEXEC mechanism enabled (wrapper: %s)", SUEXEC_BIN);
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apr_pool_userdata_set((void *)1, SUEXEC_POST_CONFIG_USERDATA,
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apr_pool_cleanup_null, s->process->pool);
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}
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return OK;
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}
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#undef SUEXEC_POST_CONFIG_USERDATA
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/*
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* Define the directives specific to this module. This structure is referenced
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* later by the 'module' structure.
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*/
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static const command_rec suexec_cmds[] =
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{
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/* XXX - Another important reason not to allow this in .htaccess is that
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* the ap_[ug]name2id() is not thread-safe */
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AP_INIT_TAKE2("SuexecUserGroup", set_suexec_ugid, NULL, RSRC_CONF,
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"User and group for spawned processes"),
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{ NULL }
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};
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static void suexec_hooks(apr_pool_t *p)
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{
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ap_hook_get_suexec_identity(get_suexec_id_doer,NULL,NULL,APR_HOOK_MIDDLE);
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ap_hook_post_config(suexec_post_config,NULL,NULL,APR_HOOK_MIDDLE);
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}
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AP_DECLARE_MODULE(suexec) =
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{
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STANDARD20_MODULE_STUFF,
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create_mconfig_for_directory, /* create per-dir config */
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NULL, /* merge per-dir config */
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create_mconfig_for_server, /* server config */
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NULL, /* merge server config */
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suexec_cmds, /* command table */
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suexec_hooks /* register hooks */
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};
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