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/* 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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* http://www.apache.org/licenses/LICENSE-2.0
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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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* @brief functions to get and process requests
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* @author Rob McCool 3/21/93
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* Thoroughly revamped by rst for Apache. NB this file reads
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* best from the bottom up.
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#include "apr_strings.h"
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#include "apr_file_io.h"
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#include "apr_fnmatch.h"
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#define APR_WANT_STRFUNC
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#include "ap_config.h"
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#include "http_config.h"
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#include "http_request.h"
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#include "http_core.h"
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#include "http_protocol.h"
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#include "http_main.h"
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#include "util_filter.h"
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#include "util_charset.h"
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#include "util_script.h"
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APR_HOOK_LINK(translate_name)
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APR_HOOK_LINK(map_to_storage)
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APR_HOOK_LINK(check_user_id)
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APR_HOOK_LINK(type_checker)
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APR_HOOK_LINK(access_checker)
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APR_HOOK_LINK(auth_checker)
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APR_HOOK_LINK(insert_filter)
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APR_HOOK_LINK(create_request)
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AP_IMPLEMENT_HOOK_RUN_FIRST(int,translate_name,
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(request_rec *r), (r), DECLINED)
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AP_IMPLEMENT_HOOK_RUN_FIRST(int,map_to_storage,
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(request_rec *r), (r), DECLINED)
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AP_IMPLEMENT_HOOK_RUN_FIRST(int,check_user_id,
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(request_rec *r), (r), DECLINED)
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AP_IMPLEMENT_HOOK_RUN_ALL(int,fixups,
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(request_rec *r), (r), OK, DECLINED)
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AP_IMPLEMENT_HOOK_RUN_FIRST(int,type_checker,
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(request_rec *r), (r), DECLINED)
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AP_IMPLEMENT_HOOK_RUN_ALL(int,access_checker,
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(request_rec *r), (r), OK, DECLINED)
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AP_IMPLEMENT_HOOK_RUN_FIRST(int,auth_checker,
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(request_rec *r), (r), DECLINED)
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AP_IMPLEMENT_HOOK_VOID(insert_filter, (request_rec *r), (r))
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AP_IMPLEMENT_HOOK_RUN_ALL(int, create_request,
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(request_rec *r), (r), OK, DECLINED)
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static int decl_die(int status, char *phase, request_rec *r)
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if (status == DECLINED) {
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ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
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"configuration error: couldn't %s: %s", phase, r->uri);
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return HTTP_INTERNAL_SERVER_ERROR;
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/* This is the master logic for processing requests. Do NOT duplicate
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* this logic elsewhere, or the security model will be broken by future
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* API changes. Each phase must be individually optimized to pick up
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* redundant/duplicate calls by subrequests, and redirects.
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AP_DECLARE(int) ap_process_request_internal(request_rec *r)
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int file_req = (r->main && r->filename);
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/* Ignore embedded %2F's in path for proxy requests */
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if (!r->proxyreq && r->parsed_uri.path) {
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d = ap_get_module_config(r->per_dir_config, &core_module);
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if (d->allow_encoded_slashes) {
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access_status = ap_unescape_url_keep2f(r->parsed_uri.path);
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access_status = ap_unescape_url(r->parsed_uri.path);
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if (access_status == HTTP_NOT_FOUND) {
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if (! d->allow_encoded_slashes) {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"found %%2f (encoded '/') in URI "
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"(decoded='%s'), returning 404",
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return access_status;
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ap_getparents(r->uri); /* OK --- shrinking transformations... */
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/* All file subrequests are a huge pain... they cannot bubble through the
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* next several steps. Only file subrequests are allowed an empty uri,
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* otherwise let translate_name kill the request.
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if ((access_status = ap_location_walk(r))) {
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return access_status;
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if ((access_status = ap_run_translate_name(r))) {
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return decl_die(access_status, "translate", r);
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/* Reset to the server default config prior to running map_to_storage
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r->per_dir_config = r->server->lookup_defaults;
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if ((access_status = ap_run_map_to_storage(r))) {
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/* This request wasn't in storage (e.g. TRACE) */
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return access_status;
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/* Excluding file-specific requests with no 'true' URI...
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/* Rerun the location walk, which overrides any map_to_storage config.
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if ((access_status = ap_location_walk(r))) {
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return access_status;
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/* Only on the main request! */
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if (r->main == NULL) {
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if ((access_status = ap_run_header_parser(r))) {
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return access_status;
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/* Skip authn/authz if the parent or prior request passed the authn/authz,
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* and that configuration didn't change (this requires optimized _walk()
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* functions in map_to_storage that use the same merge results given
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* identical input.) If the config changes, we must re-auth.
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if (r->main && (r->main->per_dir_config == r->per_dir_config)) {
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r->user = r->main->user;
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r->ap_auth_type = r->main->ap_auth_type;
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else if (r->prev && (r->prev->per_dir_config == r->per_dir_config)) {
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r->user = r->prev->user;
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r->ap_auth_type = r->prev->ap_auth_type;
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switch (ap_satisfies(r)) {
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if ((access_status = ap_run_access_checker(r)) != 0) {
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return decl_die(access_status, "check access", r);
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if (ap_some_auth_required(r)) {
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if (((access_status = ap_run_check_user_id(r)) != 0)
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|| !ap_auth_type(r)) {
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return decl_die(access_status, ap_auth_type(r)
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? "check user. No user file?"
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: "perform authentication. AuthType not set!",
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if (((access_status = ap_run_auth_checker(r)) != 0)
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|| !ap_auth_type(r)) {
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return decl_die(access_status, ap_auth_type(r)
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? "check access. No groups file?"
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: "perform authentication. AuthType not set!",
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if (((access_status = ap_run_access_checker(r)) != 0)) {
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if (!ap_some_auth_required(r)) {
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return decl_die(access_status, "check access", r);
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if (((access_status = ap_run_check_user_id(r)) != 0)
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|| !ap_auth_type(r)) {
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return decl_die(access_status, ap_auth_type(r)
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? "check user. No user file?"
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: "perform authentication. AuthType not set!",
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if (((access_status = ap_run_auth_checker(r)) != 0)
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|| !ap_auth_type(r)) {
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return decl_die(access_status, ap_auth_type(r)
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? "check access. No groups file?"
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: "perform authentication. AuthType not set!",
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/* XXX Must make certain the ap_run_type_checker short circuits mime
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* in mod-proxy for r->proxyreq && r->parsed_uri.scheme
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* && !strcmp(r->parsed_uri.scheme, "http")
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if ((access_status = ap_run_type_checker(r)) != 0) {
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return decl_die(access_status, "find types", r);
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if ((access_status = ap_run_fixups(r)) != 0) {
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return access_status;
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/* Useful caching structures to repeat _walk/merge sequences as required
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* when a subrequest or redirect reuses substantially the same config.
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* Directive order in the httpd.conf file and its Includes significantly
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* impact this optimization. Grouping common blocks at the front of the
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* config that are less likely to change between a request and
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* its subrequests, or between a request and its redirects reduced
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* the work of these functions significantly.
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typedef struct walk_walked_t {
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ap_conf_vector_t *matched; /* A dir_conf sections we matched */
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ap_conf_vector_t *merged; /* The dir_conf merged result */
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typedef struct walk_cache_t {
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const char *cached; /* The identifier we matched */
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ap_conf_vector_t **dir_conf_tested; /* The sections we matched against */
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ap_conf_vector_t *dir_conf_merged; /* Base per_dir_config */
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ap_conf_vector_t *per_dir_result; /* per_dir_config += walked result */
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apr_array_header_t *walked; /* The list of walk_walked_t results */
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static walk_cache_t *prep_walk_cache(apr_size_t t, request_rec *r)
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/* Find the most relevant, recent entry to work from. That would be
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* this request (on the second call), or the parent request of a
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* subrequest, or the prior request of an internal redirect. Provide
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* this _walk()er with a copy it is allowed to munge. If there is no
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* parent or prior cached request, then create a new walk cache.
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note = ap_get_request_note(r, t);
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if (!(cache = *note)) {
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&& ((inherit_note = ap_get_request_note(r->main, t)))
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&& ((inherit_note = ap_get_request_note(r->prev, t)))
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cache = apr_pmemdup(r->pool, *inherit_note,
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cache->walked = apr_array_copy(r->pool, cache->walked);
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cache = apr_pcalloc(r->pool, sizeof(*cache));
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cache->walked = apr_array_make(r->pool, 4, sizeof(walk_walked_t));
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/*****************************************************************
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* Getting and checking directory configuration. Also checks the
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* FollowSymlinks and FollowSymOwner stuff, since this is really the
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* only place that can happen (barring a new mid_dir_walk callout).
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* We can't do it as an access_checker module function which gets
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* called with the final per_dir_config, since we could have a directory
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* with FollowSymLinks disabled, which contains a symlink to another
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* with a .htaccess file which turns FollowSymLinks back on --- and
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* access in such a case must be denied. So, whatever it is that
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* checks FollowSymLinks needs to know the state of the options as
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* they change, all the way down.
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* resolve_symlink must _always_ be called on an APR_LNK file type!
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* It will resolve the actual target file type, modification date, etc,
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* and provide any processing required for symlink evaluation.
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* Path must already be cleaned, no trailing slash, no multi-slashes,
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* and don't call this on the root!
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* Simply, the number of times we deref a symlink are minimal compared
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* to the number of times we had an extra lstat() since we 'weren't sure'.
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* To optimize, we stat() anything when given (opts & OPT_SYM_LINKS), otherwise
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* we start off with an lstat(). Every lstat() must be dereferenced in case
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* it points at a 'nasty' - we must always rerun check_safe_file (or similar.)
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static int resolve_symlink(char *d, apr_finfo_t *lfi, int opts, apr_pool_t *p)
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const char *savename;
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if (!(opts & (OPT_SYM_OWNER | OPT_SYM_LINKS))) {
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return HTTP_FORBIDDEN;
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/* Save the name from the valid bits. */
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savename = (lfi->valid & APR_FINFO_NAME) ? lfi->name : NULL;
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if (opts & OPT_SYM_LINKS) {
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if ((res = apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME
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| APR_FINFO_LINK), p))
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return HTTP_FORBIDDEN;
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/* Give back the target */
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memcpy(lfi, &fi, sizeof(fi));
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lfi->name = savename;
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lfi->valid |= APR_FINFO_NAME;
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/* OPT_SYM_OWNER only works if we can get the owner of
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* both the file and symlink. First fill in a missing
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* owner of the symlink, then get the info of the target.
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if (!(lfi->valid & APR_FINFO_OWNER)) {
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if ((res = apr_stat(&fi, d,
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lfi->valid | APR_FINFO_LINK | APR_FINFO_OWNER, p))
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return HTTP_FORBIDDEN;
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if ((res = apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME), p))
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return HTTP_FORBIDDEN;
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if (apr_uid_compare(fi.user, lfi->user) != APR_SUCCESS) {
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return HTTP_FORBIDDEN;
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/* Give back the target */
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memcpy(lfi, &fi, sizeof(fi));
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lfi->name = savename;
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lfi->valid |= APR_FINFO_NAME;
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* As we walk the directory configuration, the merged config won't
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* be 'rooted' to a specific vhost until the very end of the merge.
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* We need a very fast mini-merge to a real, vhost-rooted merge
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* of core.opts and core.override, the only options tested within
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* directory_walk itself.
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* See core.c::merge_core_dir_configs() for explanation.
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typedef struct core_opts_t {
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allow_options_t opts;
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allow_options_t remove;
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overrides_t override;
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overrides_t override_opts;
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static void core_opts_merge(const ap_conf_vector_t *sec, core_opts_t *opts)
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core_dir_config *this_dir = ap_get_module_config(sec, &core_module);
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if (this_dir->opts & OPT_UNSET) {
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opts->add = (opts->add & ~this_dir->opts_remove)
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| this_dir->opts_add;
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opts->remove = (opts->remove & ~this_dir->opts_add)
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| this_dir->opts_remove;
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opts->opts = (opts->opts & ~opts->remove) | opts->add;
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opts->opts = this_dir->opts;
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opts->add = this_dir->opts_add;
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opts->remove = this_dir->opts_remove;
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if (!(this_dir->override & OR_UNSET)) {
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opts->override = this_dir->override;
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opts->override_opts = this_dir->override_opts;
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/*****************************************************************
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* Getting and checking directory configuration. Also checks the
457
* FollowSymlinks and FollowSymOwner stuff, since this is really the
458
* only place that can happen (barring a new mid_dir_walk callout).
460
* We can't do it as an access_checker module function which gets
461
* called with the final per_dir_config, since we could have a directory
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* with FollowSymLinks disabled, which contains a symlink to another
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* with a .htaccess file which turns FollowSymLinks back on --- and
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* access in such a case must be denied. So, whatever it is that
465
* checks FollowSymLinks needs to know the state of the options as
466
* they change, all the way down.
469
AP_DECLARE(int) ap_directory_walk(request_rec *r)
471
ap_conf_vector_t *now_merged = NULL;
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core_server_config *sconf = ap_get_module_config(r->server->module_config,
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ap_conf_vector_t **sec_ent = (ap_conf_vector_t **) sconf->sec_dir->elts;
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int num_sec = sconf->sec_dir->nelts;
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/* XXX: Better (faster) tests needed!!!
482
* "OK" as a response to a real problem is not _OK_, but to allow broken
483
* modules to proceed, we will permit the not-a-path filename to pass the
484
* following two tests. This behavior may be revoked in future versions
485
* of Apache. We still must catch it later if it's heading for the core
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* handler. Leave INFO notes here for module debugging.
488
if (r->filename == NULL) {
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"Module bug? Request filename is missing for URI %s",
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/* Canonicalize the file path without resolving filename case or aliases
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* so we can begin by checking the cache for a recent directory walk.
497
* This call will ensure we have an absolute path in the same pass.
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if ((rv = apr_filepath_merge(&entry_dir, NULL, r->filename,
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APR_FILEPATH_NOTRELATIVE, r->pool))
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ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
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"Module bug? Request filename path %s is invalid or "
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"or not absolute for uri %s",
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r->filename, r->uri);
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/* XXX Notice that this forces path_info to be canonical. That might
510
* not be desired by all apps. However, some of those same apps likely
511
* have significant security holes.
513
r->filename = entry_dir;
515
cache = prep_walk_cache(AP_NOTE_DIRECTORY_WALK, r);
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/* If this is not a dirent subrequest with a preconstructed
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* r->finfo value, then we can simply stat the filename to
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* save burning mega-cycles with unneeded stats - if this is
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* an exact file match. We don't care about failure... we
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* will stat by component failing this meager attempt.
523
* It would be nice to distinguish APR_ENOENT from other
524
* types of failure, such as APR_ENOTDIR. We can do something
525
* with APR_ENOENT, knowing that the path is good.
527
if (!r->finfo.filetype || r->finfo.filetype == APR_LNK) {
528
rv = apr_stat(&r->finfo, r->filename, APR_FINFO_MIN, r->pool);
530
/* some OSs will return APR_SUCCESS/APR_REG if we stat
531
* a regular file but we have '/' at the end of the name;
533
* other OSs will return APR_ENOTDIR for that situation;
535
* handle it the same everywhere by simulating a failure
536
* if it looks like a directory but really isn't
538
* Also reset if the stat failed, just for safety.
540
if ((rv != APR_SUCCESS) ||
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(r->finfo.filetype &&
542
(r->finfo.filetype != APR_DIR) &&
543
(r->filename[strlen(r->filename) - 1] == '/'))) {
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r->finfo.filetype = 0; /* forget what we learned */
548
if (r->finfo.filetype == APR_REG) {
549
entry_dir = ap_make_dirstr_parent(r->pool, entry_dir);
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else if (r->filename[strlen(r->filename) - 1] != '/') {
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entry_dir = apr_pstrcat(r->pool, r->filename, "/", NULL);
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/* If we have a file already matches the path of r->filename,
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* and the vhost's list of directory sections hasn't changed,
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* we can skip rewalking the directory_walk entries.
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&& ((r->finfo.filetype == APR_REG)
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|| ((r->finfo.filetype == APR_DIR)
562
&& (!r->path_info || !*r->path_info)))
563
&& (cache->dir_conf_tested == sec_ent)
564
&& (strcmp(entry_dir, cache->cached) == 0)) {
565
/* Well this looks really familiar! If our end-result (per_dir_result)
566
* didn't change, we have absolutely nothing to do :)
567
* Otherwise (as is the case with most dir_merged/file_merged requests)
568
* we must merge our dir_conf_merged onto this new r->per_dir_config.
570
if (r->per_dir_config == cache->per_dir_result) {
574
if (r->per_dir_config == cache->dir_conf_merged) {
575
r->per_dir_config = cache->per_dir_result;
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if (cache->walked->nelts) {
580
now_merged = ((walk_walked_t*)cache->walked->elts)
581
[cache->walked->nelts - 1].merged;
585
/* We start now_merged from NULL since we want to build
586
* a locations list that can be merged to any vhost.
589
int matches = cache->walked->nelts;
590
walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
591
core_dir_config *this_dir;
593
apr_finfo_t thisinfo;
594
char *save_path_info;
597
unsigned int seg, startseg;
599
/* Invariant: from the first time filename_len is set until
600
* it goes out of scope, filename_len==strlen(r->filename)
602
apr_size_t filename_len;
603
#ifdef CASE_BLIND_FILESYSTEM
604
apr_size_t canonical_len;
608
* We must play our own mini-merge game here, for the few
609
* running dir_config values we care about within dir_walk.
610
* We didn't start the merge from r->per_dir_config, so we
611
* accumulate opts and override as we merge, from the globals.
613
this_dir = ap_get_module_config(r->per_dir_config, &core_module);
614
opts.opts = this_dir->opts;
615
opts.add = this_dir->opts_add;
616
opts.remove = this_dir->opts_remove;
617
opts.override = this_dir->override;
619
/* Set aside path_info to merge back onto path_info later.
620
* If r->filename is a directory, we must remerge the path_info,
621
* before we continue! [Directories cannot, by defintion, have
622
* path info. Either the next segment is not-found, or a file.]
624
* r->path_info tracks the unconsumed source path.
625
* r->filename tracks the path as we process it
627
if ((r->finfo.filetype == APR_DIR) && r->path_info && *r->path_info)
629
if ((rv = apr_filepath_merge(&r->path_info, r->filename,
631
APR_FILEPATH_NOTABOVEROOT, r->pool))
633
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
634
"dir_walk error, path_info %s is not relative "
635
"to the filename path %s for uri %s",
636
r->path_info, r->filename, r->uri);
637
return HTTP_INTERNAL_SERVER_ERROR;
640
save_path_info = NULL;
643
save_path_info = r->path_info;
644
r->path_info = r->filename;
647
#ifdef CASE_BLIND_FILESYSTEM
650
while (r->canonical_filename && r->canonical_filename[canonical_len]
651
&& (r->canonical_filename[canonical_len]
652
== r->path_info[canonical_len])) {
657
&& ((r->canonical_filename[canonical_len - 1] != '/'
658
&& r->canonical_filename[canonical_len - 1])
659
|| (r->path_info[canonical_len - 1] != '/'
660
&& r->path_info[canonical_len - 1]))) {
665
* Now build r->filename component by component, starting
666
* with the root (on Unix, simply "/"). We will make a huge
667
* assumption here for efficiency, that any canonical path
668
* already given included a canonical root.
670
rv = apr_filepath_root((const char **)&r->filename,
671
(const char **)&r->path_info,
672
canonical_len ? 0 : APR_FILEPATH_TRUENAME,
674
filename_len = strlen(r->filename);
677
* Bad assumption above? If the root's length is longer
678
* than the canonical length, then it cannot be trusted as
679
* a truename. So try again, this time more seriously.
681
if ((rv == APR_SUCCESS) && canonical_len
682
&& (filename_len > canonical_len)) {
683
rv = apr_filepath_root((const char **)&r->filename,
684
(const char **)&r->path_info,
685
APR_FILEPATH_TRUENAME, r->pool);
686
filename_len = strlen(r->filename);
690
#else /* ndef CASE_BLIND_FILESYSTEM, really this simple for Unix today; */
692
rv = apr_filepath_root((const char **)&r->filename,
693
(const char **)&r->path_info,
695
filename_len = strlen(r->filename);
699
if (rv != APR_SUCCESS) {
700
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
701
"dir_walk error, could not determine the root "
702
"path of filename %s%s for uri %s",
703
r->filename, r->path_info, r->uri);
704
return HTTP_INTERNAL_SERVER_ERROR;
707
/* Working space for terminating null and an extra / is required.
709
buflen = filename_len + strlen(r->path_info) + 2;
710
buf = apr_palloc(r->pool, buflen);
711
memcpy(buf, r->filename, filename_len + 1);
713
thisinfo.valid = APR_FINFO_TYPE;
714
thisinfo.filetype = APR_DIR; /* It's the root, of course it's a dir */
717
* seg keeps track of which segment we've copied.
718
* sec_idx keeps track of which section we're on, since sections are
719
* ordered by number of segments. See core_reorder_directories
720
* startseg tells us how many segments describe the root path
721
* e.g. the complete path "//host/foo/" to a UNC share (4)
723
startseg = seg = ap_count_dirs(r->filename);
727
* Go down the directory hierarchy. Where we have to check for
728
* symlinks, do so. Where a .htaccess file has permission to
729
* override anything, try to find one.
737
/* We have no trailing slash, but we sure would appreciate one.
738
* However, we don't want to append a / our first time through.
740
if ((seg > startseg) && r->filename[filename_len-1] != '/') {
741
r->filename[filename_len++] = '/';
742
r->filename[filename_len] = 0;
746
/* Begin *this* level by looking for matching <Directory> sections
747
* from the server config.
749
for (; sec_idx < num_sec; ++sec_idx) {
751
ap_conf_vector_t *entry_config = sec_ent[sec_idx];
752
core_dir_config *entry_core;
753
entry_core = ap_get_module_config(entry_config, &core_module);
755
/* No more possible matches for this many segments?
756
* We are done when we find relative/regex/longer components.
758
if (entry_core->r || entry_core->d_components > seg) {
762
/* We will never skip '0' element components, e.g. plain old
763
* <Directory >, and <Directory "/"> are classified as zero
764
* so that Win32/Netware/OS2 etc all pick them up.
765
* Otherwise, skip over the mismatches.
767
if (entry_core->d_components
768
&& ((entry_core->d_components < seg)
769
|| (entry_core->d_is_fnmatch
770
? (apr_fnmatch(entry_core->d, r->filename,
771
APR_FNM_PATHNAME) != APR_SUCCESS)
772
: (strcmp(r->filename, entry_core->d) != 0)))) {
776
/* If we haven't continue'd above, we have a match.
778
* Calculate our full-context core opts & override.
780
core_opts_merge(sec_ent[sec_idx], &opts);
782
/* If we merged this same section last time, reuse it
785
if (last_walk->matched == sec_ent[sec_idx]) {
786
now_merged = last_walk->merged;
792
/* We fell out of sync. This is our own copy of walked,
793
* so truncate the remaining matches and reset remaining.
795
cache->walked->nelts -= matches;
800
now_merged = ap_merge_per_dir_configs(r->pool,
805
now_merged = sec_ent[sec_idx];
808
last_walk = (walk_walked_t*)apr_array_push(cache->walked);
809
last_walk->matched = sec_ent[sec_idx];
810
last_walk->merged = now_merged;
813
/* If .htaccess files are enabled, check for one, provided we
814
* have reached a real path.
816
do { /* Not really a loop, just a break'able code block */
818
ap_conf_vector_t *htaccess_conf = NULL;
820
/* No htaccess in an incomplete root path,
821
* nor if it's disabled
823
if (seg < startseg || !opts.override) {
827
res = ap_parse_htaccess(&htaccess_conf, r, opts.override,
829
apr_pstrdup(r->pool, r->filename),
835
if (!htaccess_conf) {
839
/* If we are still here, we found our htaccess.
841
* Calculate our full-context core opts & override.
843
core_opts_merge(htaccess_conf, &opts);
845
/* If we merged this same htaccess last time, reuse it...
846
* this wouldn't work except that we cache the htaccess
847
* sections for the lifetime of the request, so we match
848
* the same conf. Good planning (no, pure luck ;)
851
if (last_walk->matched == htaccess_conf) {
852
now_merged = last_walk->merged;
858
/* We fell out of sync. This is our own copy of walked,
859
* so truncate the remaining matches and reset
862
cache->walked->nelts -= matches;
867
now_merged = ap_merge_per_dir_configs(r->pool,
872
now_merged = htaccess_conf;
875
last_walk = (walk_walked_t*)apr_array_push(cache->walked);
876
last_walk->matched = htaccess_conf;
877
last_walk->merged = now_merged;
879
} while (0); /* Only one htaccess, not a real loop */
881
/* That temporary trailing slash was useful, now drop it.
884
r->filename[--filename_len] = '\0';
887
/* Time for all good things to come to an end?
889
if (!r->path_info || !*r->path_info) {
893
/* Now it's time for the next segment...
894
* We will assume the next element is an end node, and fix it up
895
* below as necessary...
898
seg_name = r->filename + filename_len;
899
delim = strchr(r->path_info + (*r->path_info == '/' ? 1 : 0), '/');
901
size_t path_info_len = delim - r->path_info;
903
memcpy(seg_name, r->path_info, path_info_len + 1);
904
filename_len += path_info_len;
905
r->path_info = delim;
909
size_t path_info_len = strlen(r->path_info);
910
memcpy(seg_name, r->path_info, path_info_len + 1);
911
filename_len += path_info_len;
912
r->path_info += path_info_len;
914
if (*seg_name == '/')
917
/* If nothing remained but a '/' string, we are finished
918
* XXX: NO WE ARE NOT!!! Now process this puppy!!! */
923
/* First optimization;
924
* If...we knew r->filename was a file, and
925
* if...we have strict (case-sensitive) filenames, or
926
* we know the canonical_filename matches to _this_ name, and
927
* if...we have allowed symlinks
928
* skip the lstat and dummy up an APR_DIR value for thisinfo.
930
if (r->finfo.filetype
931
#ifdef CASE_BLIND_FILESYSTEM
932
&& (filename_len <= canonical_len)
934
&& ((opts.opts & (OPT_SYM_OWNER | OPT_SYM_LINKS)) == OPT_SYM_LINKS))
937
thisinfo.filetype = APR_DIR;
942
/* We choose apr_stat with flag APR_FINFO_LINK here, rather that
943
* plain apr_stat, so that we capture this path object rather than
944
* its target. We will replace the info with our target's info
945
* below. We especially want the name of this 'link' object, not
946
* the name of its target, if we are fixing the filename
947
* case/resolving aliases.
949
rv = apr_stat(&thisinfo, r->filename,
950
APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK,
953
if (APR_STATUS_IS_ENOENT(rv)) {
954
/* Nothing? That could be nice. But our directory
957
thisinfo.filetype = APR_NOFILE;
960
else if (APR_STATUS_IS_EACCES(rv)) {
961
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
962
"access to %s denied", r->uri);
963
return r->status = HTTP_FORBIDDEN;
965
else if ((rv != APR_SUCCESS && rv != APR_INCOMPLETE)
966
|| !(thisinfo.valid & APR_FINFO_TYPE)) {
967
/* If we hit ENOTDIR, we must have over-optimized, deny
968
* rather than assume not found.
970
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
971
"access to %s failed", r->uri);
972
return r->status = HTTP_FORBIDDEN;
975
/* Fix up the path now if we have a name, and they don't agree
977
if ((thisinfo.valid & APR_FINFO_NAME)
978
&& strcmp(seg_name, thisinfo.name)) {
979
/* TODO: provide users an option that an internal/external
980
* redirect is required here? We need to walk the URI and
981
* filename in tandem to properly correlate these.
983
strcpy(seg_name, thisinfo.name);
984
filename_len = strlen(r->filename);
987
if (thisinfo.filetype == APR_LNK) {
988
/* Is this a possibly acceptable symlink?
990
if ((res = resolve_symlink(r->filename, &thisinfo,
991
opts.opts, r->pool)) != OK) {
992
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
993
"Symbolic link not allowed "
994
"or link target not accessible: %s",
996
return r->status = res;
1000
/* Ok, we are done with the link's info, test the real target
1002
if (thisinfo.filetype == APR_REG ||
1003
thisinfo.filetype == APR_NOFILE) {
1004
/* That was fun, nothing left for us here
1008
else if (thisinfo.filetype != APR_DIR) {
1009
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1010
"Forbidden: %s doesn't point to "
1011
"a file or directory",
1013
return r->status = HTTP_FORBIDDEN;
1017
} while (thisinfo.filetype == APR_DIR);
1019
/* If we have _not_ optimized, this is the time to recover
1020
* the final stat result.
1022
if (!r->finfo.filetype || r->finfo.filetype == APR_LNK) {
1023
r->finfo = thisinfo;
1026
/* Now splice the saved path_info back onto any new path_info
1028
if (save_path_info) {
1029
if (r->path_info && *r->path_info) {
1030
r->path_info = ap_make_full_path(r->pool, r->path_info,
1034
r->path_info = save_path_info;
1039
* Now we'll deal with the regexes, note we pick up sec_idx
1040
* where we left off (we gave up after we hit entry_core->r)
1042
for (; sec_idx < num_sec; ++sec_idx) {
1044
core_dir_config *entry_core;
1045
entry_core = ap_get_module_config(sec_ent[sec_idx], &core_module);
1047
if (!entry_core->r) {
1051
if (ap_regexec(entry_core->r, r->filename, 0, NULL, AP_REG_NOTEOL)) {
1055
/* If we haven't already continue'd above, we have a match.
1057
* Calculate our full-context core opts & override.
1059
core_opts_merge(sec_ent[sec_idx], &opts);
1061
/* If we merged this same section last time, reuse it
1064
if (last_walk->matched == sec_ent[sec_idx]) {
1065
now_merged = last_walk->merged;
1071
/* We fell out of sync. This is our own copy of walked,
1072
* so truncate the remaining matches and reset remaining.
1074
cache->walked->nelts -= matches;
1079
now_merged = ap_merge_per_dir_configs(r->pool,
1084
now_merged = sec_ent[sec_idx];
1087
last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1088
last_walk->matched = sec_ent[sec_idx];
1089
last_walk->merged = now_merged;
1092
/* Whoops - everything matched in sequence, but the original walk
1093
* found some additional matches. Truncate them.
1096
cache->walked->nelts -= matches;
1100
/* It seems this shouldn't be needed anymore. We translated the
1101
x symlink above into a real resource, and should have died up there.
1102
x Even if we keep this, it needs more thought (maybe an r->file_is_symlink)
1103
x perhaps it should actually happen in file_walk, so we catch more
1104
x obscure cases in autoindex subrequests, etc.
1106
x * Symlink permissions are determined by the parent. If the request is
1107
x * for a directory then applying the symlink test here would use the
1108
x * permissions of the directory as opposed to its parent. Consider a
1109
x * symlink pointing to a dir with a .htaccess disallowing symlinks. If
1110
x * you access /symlink (or /symlink/) you would get a 403 without this
1111
x * APR_DIR test. But if you accessed /symlink/index.html, for example,
1112
x * you would *not* get the 403.
1114
x if (r->finfo.filetype != APR_DIR
1115
x && (res = resolve_symlink(r->filename, r->info, ap_allow_options(r),
1117
x ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1118
x "Symbolic link not allowed: %s", r->filename);
1123
/* Save future sub-requestors much angst in processing
1124
* this subrequest. If dir_walk couldn't canonicalize
1125
* the file path, nothing can.
1127
r->canonical_filename = r->filename;
1129
if (r->finfo.filetype == APR_DIR) {
1130
cache->cached = r->filename;
1133
cache->cached = ap_make_dirstr_parent(r->pool, r->filename);
1136
cache->dir_conf_tested = sec_ent;
1137
cache->dir_conf_merged = r->per_dir_config;
1139
/* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1140
* and note the end result to (potentially) skip this step next time.
1143
r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1147
cache->per_dir_result = r->per_dir_config;
1153
AP_DECLARE(int) ap_location_walk(request_rec *r)
1155
ap_conf_vector_t *now_merged = NULL;
1156
core_server_config *sconf = ap_get_module_config(r->server->module_config,
1158
ap_conf_vector_t **sec_ent = (ap_conf_vector_t **)sconf->sec_url->elts;
1159
int num_sec = sconf->sec_url->nelts;
1160
walk_cache_t *cache;
1161
const char *entry_uri;
1163
/* No tricks here, there are no <Locations > to parse in this vhost.
1164
* We won't destroy the cache, just in case _this_ redirect is later
1165
* redirected again to a vhost with <Location > blocks to optimize.
1171
cache = prep_walk_cache(AP_NOTE_LOCATION_WALK, r);
1173
/* Location and LocationMatch differ on their behaviour w.r.t. multiple
1174
* slashes. Location matches multiple slashes with a single slash,
1175
* LocationMatch doesn't. An exception, for backwards brokenness is
1176
* absoluteURIs... in which case neither match multiple slashes.
1178
if (r->uri[0] != '/') {
1182
char *uri = apr_pstrdup(r->pool, r->uri);
1187
/* If we have an cache->cached location that matches r->uri,
1188
* and the vhost's list of locations hasn't changed, we can skip
1189
* rewalking the location_walk entries.
1192
&& (cache->dir_conf_tested == sec_ent)
1193
&& (strcmp(entry_uri, cache->cached) == 0)) {
1194
/* Well this looks really familiar! If our end-result (per_dir_result)
1195
* didn't change, we have absolutely nothing to do :)
1196
* Otherwise (as is the case with most dir_merged/file_merged requests)
1197
* we must merge our dir_conf_merged onto this new r->per_dir_config.
1199
if (r->per_dir_config == cache->per_dir_result) {
1203
if (r->per_dir_config == cache->dir_conf_merged) {
1204
r->per_dir_config = cache->per_dir_result;
1208
if (cache->walked->nelts) {
1209
now_merged = ((walk_walked_t*)cache->walked->elts)
1210
[cache->walked->nelts - 1].merged;
1214
/* We start now_merged from NULL since we want to build
1215
* a locations list that can be merged to any vhost.
1218
int matches = cache->walked->nelts;
1219
walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1220
cache->cached = entry_uri;
1222
/* Go through the location entries, and check for matches.
1223
* We apply the directive sections in given order, we should
1224
* really try them with the most general first.
1226
for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1228
core_dir_config *entry_core;
1229
entry_core = ap_get_module_config(sec_ent[sec_idx], &core_module);
1231
/* ### const strlen can be optimized in location config parsing */
1232
len = strlen(entry_core->d);
1234
/* Test the regex, fnmatch or string as appropriate.
1235
* If it's a strcmp, and the <Location > pattern was
1236
* not slash terminated, then this uri must be slash
1237
* terminated (or at the end of the string) to match.
1240
? ap_regexec(entry_core->r, r->uri, 0, NULL, 0)
1241
: (entry_core->d_is_fnmatch
1242
? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1243
: (strncmp(entry_core->d, cache->cached, len)
1244
|| (entry_core->d[len - 1] != '/'
1245
&& cache->cached[len] != '/'
1246
&& cache->cached[len] != '\0')))) {
1250
/* If we merged this same section last time, reuse it
1253
if (last_walk->matched == sec_ent[sec_idx]) {
1254
now_merged = last_walk->merged;
1260
/* We fell out of sync. This is our own copy of walked,
1261
* so truncate the remaining matches and reset remaining.
1263
cache->walked->nelts -= matches;
1268
now_merged = ap_merge_per_dir_configs(r->pool,
1273
now_merged = sec_ent[sec_idx];
1276
last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1277
last_walk->matched = sec_ent[sec_idx];
1278
last_walk->merged = now_merged;
1281
/* Whoops - everything matched in sequence, but the original walk
1282
* found some additional matches. Truncate them.
1285
cache->walked->nelts -= matches;
1289
cache->dir_conf_tested = sec_ent;
1290
cache->dir_conf_merged = r->per_dir_config;
1292
/* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1293
* and note the end result to (potentially) skip this step next time.
1296
r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1300
cache->per_dir_result = r->per_dir_config;
1305
AP_DECLARE(int) ap_file_walk(request_rec *r)
1307
ap_conf_vector_t *now_merged = NULL;
1308
core_dir_config *dconf = ap_get_module_config(r->per_dir_config,
1310
ap_conf_vector_t **sec_ent = (ap_conf_vector_t **)dconf->sec_file->elts;
1311
int num_sec = dconf->sec_file->nelts;
1312
walk_cache_t *cache;
1313
const char *test_file;
1315
/* To allow broken modules to proceed, we allow missing filenames to pass.
1316
* We will catch it later if it's heading for the core handler.
1317
* directory_walk already posted an INFO note for module debugging.
1319
if (r->filename == NULL) {
1323
cache = prep_walk_cache(AP_NOTE_FILE_WALK, r);
1325
/* No tricks here, there are just no <Files > to parse in this context.
1326
* We won't destroy the cache, just in case _this_ redirect is later
1327
* redirected again to a context containing the same or similar <Files >.
1333
/* Get the basename .. and copy for the cache just
1334
* in case r->filename is munged by another module
1336
test_file = strrchr(r->filename, '/');
1337
if (test_file == NULL) {
1338
test_file = apr_pstrdup(r->pool, r->filename);
1341
test_file = apr_pstrdup(r->pool, ++test_file);
1344
/* If we have an cache->cached file name that matches test_file,
1345
* and the directory's list of file sections hasn't changed, we
1346
* can skip rewalking the file_walk entries.
1349
&& (cache->dir_conf_tested == sec_ent)
1350
&& (strcmp(test_file, cache->cached) == 0)) {
1351
/* Well this looks really familiar! If our end-result (per_dir_result)
1352
* didn't change, we have absolutely nothing to do :)
1353
* Otherwise (as is the case with most dir_merged requests)
1354
* we must merge our dir_conf_merged onto this new r->per_dir_config.
1356
if (r->per_dir_config == cache->per_dir_result) {
1360
if (r->per_dir_config == cache->dir_conf_merged) {
1361
r->per_dir_config = cache->per_dir_result;
1365
if (cache->walked->nelts) {
1366
now_merged = ((walk_walked_t*)cache->walked->elts)
1367
[cache->walked->nelts - 1].merged;
1371
/* We start now_merged from NULL since we want to build
1372
* a file section list that can be merged to any dir_walk.
1375
int matches = cache->walked->nelts;
1376
walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1377
cache->cached = test_file;
1379
/* Go through the location entries, and check for matches.
1380
* We apply the directive sections in given order, we should
1381
* really try them with the most general first.
1383
for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1385
core_dir_config *entry_core;
1386
entry_core = ap_get_module_config(sec_ent[sec_idx], &core_module);
1389
? ap_regexec(entry_core->r, cache->cached , 0, NULL, 0)
1390
: (entry_core->d_is_fnmatch
1391
? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1392
: strcmp(entry_core->d, cache->cached))) {
1396
/* If we merged this same section last time, reuse it
1399
if (last_walk->matched == sec_ent[sec_idx]) {
1400
now_merged = last_walk->merged;
1406
/* We fell out of sync. This is our own copy of walked,
1407
* so truncate the remaining matches and reset remaining.
1409
cache->walked->nelts -= matches;
1414
now_merged = ap_merge_per_dir_configs(r->pool,
1419
now_merged = sec_ent[sec_idx];
1422
last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1423
last_walk->matched = sec_ent[sec_idx];
1424
last_walk->merged = now_merged;
1427
/* Whoops - everything matched in sequence, but the original walk
1428
* found some additional matches. Truncate them.
1431
cache->walked->nelts -= matches;
1435
cache->dir_conf_tested = sec_ent;
1436
cache->dir_conf_merged = r->per_dir_config;
1438
/* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1439
* and note the end result to (potentially) skip this step next time.
1442
r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1446
cache->per_dir_result = r->per_dir_config;
1451
/*****************************************************************
1453
* The sub_request mechanism.
1455
* Fns to look up a relative URI from, e.g., a map file or SSI document.
1456
* These do all access checks, etc., but don't actually run the transaction
1457
* ... use run_sub_req below for that. Also, be sure to use destroy_sub_req
1458
* as appropriate if you're likely to be creating more than a few of these.
1459
* (An early Apache version didn't destroy the sub_reqs used in directory
1460
* indexing. The result, when indexing a directory with 800-odd files in
1461
* it, was massively excessive storage allocation).
1463
* Note more manipulation of protocol-specific vars in the request
1467
static request_rec *make_sub_request(const request_rec *r,
1468
ap_filter_t *next_filter)
1473
apr_pool_create(&rrp, r->pool);
1474
apr_pool_tag(rrp, "subrequest");
1475
rnew = apr_pcalloc(rrp, sizeof(request_rec));
1478
rnew->hostname = r->hostname;
1479
rnew->request_time = r->request_time;
1480
rnew->connection = r->connection;
1481
rnew->server = r->server;
1483
rnew->request_config = ap_create_request_config(rnew->pool);
1485
/* Start a clean config from this subrequest's vhost. Optimization in
1486
* Location/File/Dir walks from the parent request assure that if the
1487
* config blocks of the subrequest match the parent request, no merges
1488
* will actually occur (and generally a minimal number of merges are
1489
* required, even if the parent and subrequest aren't quite identical.)
1491
rnew->per_dir_config = r->server->lookup_defaults;
1493
rnew->htaccess = r->htaccess;
1494
rnew->allowed_methods = ap_make_method_list(rnew->pool, 2);
1496
/* make a copy of the allowed-methods list */
1497
ap_copy_method_list(rnew->allowed_methods, r->allowed_methods);
1499
/* start with the same set of output filters */
1501
/* while there are no input filters for a subrequest, we will
1502
* try to insert some, so if we don't have valid data, the code
1505
rnew->input_filters = r->input_filters;
1506
rnew->proto_input_filters = r->proto_input_filters;
1507
rnew->output_filters = next_filter;
1508
rnew->proto_output_filters = r->proto_output_filters;
1509
ap_add_output_filter_handle(ap_subreq_core_filter_handle,
1510
NULL, rnew, rnew->connection);
1513
/* If NULL - we are expecting to be internal_fast_redirect'ed
1514
* to this subrequest - or this request will never be invoked.
1515
* Ignore the original request filter stack entirely, and
1516
* drill the input and output stacks back to the connection.
1518
rnew->proto_input_filters = r->proto_input_filters;
1519
rnew->proto_output_filters = r->proto_output_filters;
1521
rnew->input_filters = r->proto_input_filters;
1522
rnew->output_filters = r->proto_output_filters;
1525
/* no input filters for a subrequest */
1527
ap_set_sub_req_protocol(rnew, r);
1529
/* We have to run this after we fill in sub req vars,
1530
* or the r->main pointer won't be setup
1532
ap_run_create_request(rnew);
1534
/* Begin by presuming any module can make its own path_info assumptions,
1535
* until some module interjects and changes the value.
1537
rnew->used_path_info = AP_REQ_DEFAULT_PATH_INFO;
1542
AP_CORE_DECLARE_NONSTD(apr_status_t) ap_sub_req_output_filter(ap_filter_t *f,
1543
apr_bucket_brigade *bb)
1545
apr_bucket *e = APR_BRIGADE_LAST(bb);
1547
if (APR_BUCKET_IS_EOS(e)) {
1548
apr_bucket_delete(e);
1551
if (!APR_BRIGADE_EMPTY(bb)) {
1552
return ap_pass_brigade(f->next, bb);
1559
AP_DECLARE(int) ap_some_auth_required(request_rec *r)
1561
/* Is there a require line configured for the type of *this* req? */
1563
const apr_array_header_t *reqs_arr = ap_requires(r);
1571
reqs = (require_line *) reqs_arr->elts;
1573
for (i = 0; i < reqs_arr->nelts; ++i) {
1574
if (reqs[i].method_mask & (AP_METHOD_BIT << r->method_number)) {
1583
AP_DECLARE(request_rec *) ap_sub_req_method_uri(const char *method,
1584
const char *new_uri,
1585
const request_rec *r,
1586
ap_filter_t *next_filter)
1589
/* Initialise res, to avoid a gcc warning */
1590
int res = HTTP_INTERNAL_SERVER_ERROR;
1593
rnew = make_sub_request(r, next_filter);
1595
/* would be nicer to pass "method" to ap_set_sub_req_protocol */
1596
rnew->method = method;
1597
rnew->method_number = ap_method_number_of(method);
1599
if (new_uri[0] == '/') {
1600
ap_parse_uri(rnew, new_uri);
1603
udir = ap_make_dirstr_parent(rnew->pool, r->uri);
1604
udir = ap_escape_uri(rnew->pool, udir); /* re-escape it */
1605
ap_parse_uri(rnew, ap_make_full_path(rnew->pool, udir, new_uri));
1608
/* We cannot return NULL without violating the API. So just turn this
1609
* subrequest into a 500 to indicate the failure. */
1610
if (ap_is_recursion_limit_exceeded(r)) {
1611
rnew->status = HTTP_INTERNAL_SERVER_ERROR;
1616
* If the content can be served by the quick_handler, we can
1617
* safely bypass request_internal processing.
1619
* If next_filter is NULL we are expecting to be
1620
* internal_fast_redirect'ed to the subrequest, or the subrequest will
1621
* never be invoked. We need to make sure that the quickhandler is not
1622
* invoked by any lookups. Since an internal_fast_redirect will always
1623
* occur too late for the quickhandler to handle the request.
1626
res = ap_run_quick_handler(rnew, 1);
1629
if (next_filter == NULL || res != OK) {
1630
if ((res = ap_process_request_internal(rnew))) {
1638
AP_DECLARE(request_rec *) ap_sub_req_lookup_uri(const char *new_uri,
1639
const request_rec *r,
1640
ap_filter_t *next_filter)
1642
return ap_sub_req_method_uri("GET", new_uri, r, next_filter);
1645
AP_DECLARE(request_rec *) ap_sub_req_lookup_dirent(const apr_finfo_t *dirent,
1646
const request_rec *r,
1648
ap_filter_t *next_filter)
1655
rnew = make_sub_request(r, next_filter);
1657
/* Special case: we are looking at a relative lookup in the same directory.
1658
* This is 100% safe, since dirent->name just came from the filesystem.
1660
if (r->path_info && *r->path_info) {
1661
/* strip path_info off the end of the uri to keep it in sync
1662
* with r->filename, which has already been stripped by directory_walk,
1663
* merge the dirent->name, and then, if the caller wants us to remerge
1664
* the original path info, do so. Note we never fix the path_info back
1665
* to r->filename, since dir_walk would do so (but we don't expect it
1666
* to happen in the usual cases)
1668
udir = apr_pstrdup(rnew->pool, r->uri);
1669
udir[ap_find_path_info(udir, r->path_info)] = '\0';
1670
udir = ap_make_dirstr_parent(rnew->pool, udir);
1672
rnew->uri = ap_make_full_path(rnew->pool, udir, dirent->name);
1673
if (subtype == AP_SUBREQ_MERGE_ARGS) {
1674
rnew->uri = ap_make_full_path(rnew->pool, rnew->uri, r->path_info + 1);
1675
rnew->path_info = apr_pstrdup(rnew->pool, r->path_info);
1677
rnew->uri = ap_escape_uri(rnew->pool, rnew->uri);
1680
udir = ap_make_dirstr_parent(rnew->pool, r->uri);
1681
rnew->uri = ap_escape_uri(rnew->pool, ap_make_full_path(rnew->pool,
1686
fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
1687
rnew->filename = ap_make_full_path(rnew->pool, fdir, dirent->name);
1688
if (r->canonical_filename == r->filename) {
1689
rnew->canonical_filename = rnew->filename;
1692
/* XXX This is now less relevant; we will do a full location walk
1693
* these days for this case. Preserve the apr_stat results, and
1694
* perhaps we also tag that symlinks were tested and/or found for
1697
rnew->per_dir_config = r->server->lookup_defaults;
1699
if ((dirent->valid & APR_FINFO_MIN) != APR_FINFO_MIN) {
1701
* apr_dir_read isn't very complete on this platform, so
1702
* we need another apr_stat (with or without APR_FINFO_LINK
1703
* depending on whether we allow all symlinks here.) If this
1704
* is an APR_LNK that resolves to an APR_DIR, then we will rerun
1705
* everything anyways... this should be safe.
1708
if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
1709
if (((rv = apr_stat(&rnew->finfo, rnew->filename,
1710
APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
1711
&& (rv != APR_INCOMPLETE)) {
1712
rnew->finfo.filetype = 0;
1716
if (((rv = apr_stat(&rnew->finfo, rnew->filename,
1717
APR_FINFO_LINK | APR_FINFO_MIN,
1718
rnew->pool)) != APR_SUCCESS)
1719
&& (rv != APR_INCOMPLETE)) {
1720
rnew->finfo.filetype = 0;
1725
memcpy(&rnew->finfo, dirent, sizeof(apr_finfo_t));
1728
if (rnew->finfo.filetype == APR_LNK) {
1730
* Resolve this symlink. We should tie this back to dir_walk's cache
1732
if ((res = resolve_symlink(rnew->filename, &rnew->finfo,
1733
ap_allow_options(rnew), rnew->pool))
1740
if (rnew->finfo.filetype == APR_DIR) {
1741
/* ap_make_full_path overallocated the buffers
1742
* by one character to help us out here.
1744
strcpy(rnew->filename + strlen(rnew->filename), "/");
1745
if (!rnew->path_info || !*rnew->path_info) {
1746
strcpy(rnew->uri + strlen(rnew->uri ), "/");
1750
/* fill in parsed_uri values
1752
if (r->args && *r->args && (subtype == AP_SUBREQ_MERGE_ARGS)) {
1753
ap_parse_uri(rnew, apr_pstrcat(r->pool, rnew->uri, "?",
1757
ap_parse_uri(rnew, rnew->uri);
1760
/* We cannot return NULL without violating the API. So just turn this
1761
* subrequest into a 500. */
1762
if (ap_is_recursion_limit_exceeded(r)) {
1763
rnew->status = HTTP_INTERNAL_SERVER_ERROR;
1767
if ((res = ap_process_request_internal(rnew))) {
1774
AP_DECLARE(request_rec *) ap_sub_req_lookup_file(const char *new_file,
1775
const request_rec *r,
1776
ap_filter_t *next_filter)
1783
rnew = make_sub_request(r, next_filter);
1785
fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
1786
fdirlen = strlen(fdir);
1788
/* Translate r->filename, if it was canonical, it stays canonical
1790
if (r->canonical_filename == r->filename) {
1791
rnew->canonical_filename = (char*)(1);
1794
if (apr_filepath_merge(&rnew->filename, fdir, new_file,
1795
APR_FILEPATH_TRUENAME, rnew->pool) != APR_SUCCESS) {
1796
rnew->status = HTTP_FORBIDDEN;
1800
if (rnew->canonical_filename) {
1801
rnew->canonical_filename = rnew->filename;
1805
* Check for a special case... if there are no '/' characters in new_file
1806
* at all, and the path was the same, then we are looking at a relative
1807
* lookup in the same directory. Fixup the URI to match.
1810
if (strncmp(rnew->filename, fdir, fdirlen) == 0
1811
&& rnew->filename[fdirlen]
1812
&& ap_strchr_c(rnew->filename + fdirlen, '/') == NULL) {
1814
if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
1815
if (((rv = apr_stat(&rnew->finfo, rnew->filename,
1816
APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
1817
&& (rv != APR_INCOMPLETE)) {
1818
rnew->finfo.filetype = 0;
1822
if (((rv = apr_stat(&rnew->finfo, rnew->filename,
1823
APR_FINFO_LINK | APR_FINFO_MIN,
1824
rnew->pool)) != APR_SUCCESS)
1825
&& (rv != APR_INCOMPLETE)) {
1826
rnew->finfo.filetype = 0;
1830
if (r->uri && *r->uri) {
1831
char *udir = ap_make_dirstr_parent(rnew->pool, r->uri);
1832
rnew->uri = ap_make_full_path(rnew->pool, udir,
1833
rnew->filename + fdirlen);
1834
ap_parse_uri(rnew, rnew->uri); /* fill in parsed_uri values */
1837
ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
1838
rnew->uri = apr_pstrdup(rnew->pool, "");
1842
/* XXX: @@@: What should be done with the parsed_uri values?
1843
* We would be better off stripping down to the 'common' elements
1844
* of the path, then reassembling the URI as best as we can.
1846
ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
1848
* XXX: this should be set properly like it is in the same-dir case
1849
* but it's actually sometimes to impossible to do it... because the
1850
* file may not have a uri associated with it -djg
1852
rnew->uri = apr_pstrdup(rnew->pool, "");
1855
/* We cannot return NULL without violating the API. So just turn this
1856
* subrequest into a 500. */
1857
if (ap_is_recursion_limit_exceeded(r)) {
1858
rnew->status = HTTP_INTERNAL_SERVER_ERROR;
1862
if ((res = ap_process_request_internal(rnew))) {
1869
AP_DECLARE(int) ap_run_sub_req(request_rec *r)
1871
int retval = DECLINED;
1872
/* Run the quick handler if the subrequest is not a dirent or file
1875
if (!(r->filename && r->finfo.filetype)) {
1876
retval = ap_run_quick_handler(r, 0);
1879
retval = ap_invoke_handler(r);
1880
if (retval == DONE) {
1884
ap_finalize_sub_req_protocol(r);
1888
AP_DECLARE(void) ap_destroy_sub_req(request_rec *r)
1890
/* Reclaim the space */
1891
apr_pool_destroy(r->pool);
1895
* Function to set the r->mtime field to the specified value if it's later
1896
* than what's already there.
1898
AP_DECLARE(void) ap_update_mtime(request_rec *r, apr_time_t dependency_mtime)
1900
if (r->mtime < dependency_mtime) {
1901
r->mtime = dependency_mtime;
1906
* Is it the initial main request, which we only get *once* per HTTP request?
1908
AP_DECLARE(int) ap_is_initial_req(request_rec *r)
1910
return (r->main == NULL) /* otherwise, this is a sub-request */
1911
&& (r->prev == NULL); /* otherwise, this is an internal redirect */
added
removed
server/request.c
