1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 * @brief functions to get and process requests
21 * @author Rob McCool 3/21/93
23 * Thoroughly revamped by rst for Apache. NB this file reads
24 * best from the bottom up.
28 #include "apr_strings.h"
29 #include "apr_file_io.h"
30 #include "apr_fnmatch.h"
32 #define APR_WANT_STRFUNC
35 #include "ap_config.h"
36 #include "ap_provider.h"
38 #include "http_config.h"
39 #include "http_request.h"
40 #include "http_core.h"
41 #include "http_protocol.h"
43 #include "http_main.h"
44 #include "util_filter.h"
45 #include "util_charset.h"
46 #include "util_script.h"
48 #include "mod_request.h"
57 /* we know core's module_index is 0 */
58 #undef APLOG_MODULE_INDEX
59 #define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
62 APR_HOOK_LINK(translate_name)
63 APR_HOOK_LINK(map_to_storage)
64 APR_HOOK_LINK(check_user_id)
66 APR_HOOK_LINK(type_checker)
67 APR_HOOK_LINK(access_checker)
68 APR_HOOK_LINK(access_checker_ex)
69 APR_HOOK_LINK(auth_checker)
70 APR_HOOK_LINK(insert_filter)
71 APR_HOOK_LINK(create_request)
72 APR_HOOK_LINK(post_perdir_config)
73 APR_HOOK_LINK(dirwalk_stat)
74 APR_HOOK_LINK(force_authn)
77 AP_IMPLEMENT_HOOK_RUN_FIRST(int,translate_name,
78 (request_rec *r), (r), DECLINED)
79 AP_IMPLEMENT_HOOK_RUN_FIRST(int,map_to_storage,
80 (request_rec *r), (r), DECLINED)
81 AP_IMPLEMENT_HOOK_RUN_FIRST(int,check_user_id,
82 (request_rec *r), (r), DECLINED)
83 AP_IMPLEMENT_HOOK_RUN_ALL(int,fixups,
84 (request_rec *r), (r), OK, DECLINED)
85 AP_IMPLEMENT_HOOK_RUN_FIRST(int,type_checker,
86 (request_rec *r), (r), DECLINED)
87 AP_IMPLEMENT_HOOK_RUN_ALL(int,access_checker,
88 (request_rec *r), (r), OK, DECLINED)
89 AP_IMPLEMENT_HOOK_RUN_FIRST(int,access_checker_ex,
90 (request_rec *r), (r), DECLINED)
91 AP_IMPLEMENT_HOOK_RUN_FIRST(int,auth_checker,
92 (request_rec *r), (r), DECLINED)
93 AP_IMPLEMENT_HOOK_VOID(insert_filter, (request_rec *r), (r))
94 AP_IMPLEMENT_HOOK_RUN_ALL(int, create_request,
95 (request_rec *r), (r), OK, DECLINED)
96 AP_IMPLEMENT_HOOK_RUN_ALL(int, post_perdir_config,
97 (request_rec *r), (r), OK, DECLINED)
98 AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t,dirwalk_stat,
99 (apr_finfo_t *finfo, request_rec *r, apr_int32_t wanted),
100 (finfo, r, wanted), AP_DECLINED)
101 AP_IMPLEMENT_HOOK_RUN_FIRST(int,force_authn,
102 (request_rec *r), (r), DECLINED)
104 static int auth_internal_per_conf = 0;
105 static int auth_internal_per_conf_hooks = 0;
106 static int auth_internal_per_conf_providers = 0;
109 static int decl_die(int status, const char *phase, request_rec *r)
111 if (status == DECLINED) {
112 ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, APLOGNO(00025)
113 "configuration error: couldn't %s: %s", phase, r->uri);
114 return HTTP_INTERNAL_SERVER_ERROR;
117 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
118 "auth phase '%s' gave status %d: %s", phase,
124 AP_DECLARE(int) ap_some_authn_required(request_rec *r)
128 switch (ap_satisfies(r)) {
131 if ((access_status = ap_run_access_checker(r)) != OK) {
135 access_status = ap_run_access_checker_ex(r);
136 if (access_status == DECLINED) {
142 if ((access_status = ap_run_access_checker(r)) == OK) {
146 access_status = ap_run_access_checker_ex(r);
147 if (access_status == DECLINED) {
157 /* This is the master logic for processing requests. Do NOT duplicate
158 * this logic elsewhere, or the security model will be broken by future
159 * API changes. Each phase must be individually optimized to pick up
160 * redundant/duplicate calls by subrequests, and redirects.
162 AP_DECLARE(int) ap_process_request_internal(request_rec *r)
164 int file_req = (r->main && r->filename);
168 /* Ignore embedded %2F's in path for proxy requests */
169 if (!r->proxyreq && r->parsed_uri.path) {
170 d = ap_get_core_module_config(r->per_dir_config);
171 if (d->allow_encoded_slashes) {
172 access_status = ap_unescape_url_keep2f(r->parsed_uri.path, d->decode_encoded_slashes);
175 access_status = ap_unescape_url(r->parsed_uri.path);
178 if (access_status == HTTP_NOT_FOUND) {
179 if (! d->allow_encoded_slashes) {
180 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00026)
181 "found %%2f (encoded '/') in URI "
182 "(decoded='%s'), returning 404",
186 return access_status;
190 ap_getparents(r->uri); /* OK --- shrinking transformations... */
192 /* All file subrequests are a huge pain... they cannot bubble through the
193 * next several steps. Only file subrequests are allowed an empty uri,
194 * otherwise let translate_name kill the request.
197 if ((access_status = ap_location_walk(r))) {
198 return access_status;
200 if ((access_status = ap_if_walk(r))) {
201 return access_status;
204 d = ap_get_core_module_config(r->per_dir_config);
209 if ((access_status = ap_run_translate_name(r))) {
210 return decl_die(access_status, "translate", r);
214 /* Reset to the server default config prior to running map_to_storage
216 r->per_dir_config = r->server->lookup_defaults;
218 if ((access_status = ap_run_map_to_storage(r))) {
219 /* This request wasn't in storage (e.g. TRACE) */
220 return access_status;
223 /* Rerun the location walk, which overrides any map_to_storage config.
225 if ((access_status = ap_location_walk(r))) {
226 return access_status;
228 if ((access_status = ap_if_walk(r))) {
229 return access_status;
232 d = ap_get_core_module_config(r->per_dir_config);
237 if ((access_status = ap_run_post_perdir_config(r))) {
238 return access_status;
241 /* Only on the main request! */
242 if (r->main == NULL) {
243 if ((access_status = ap_run_header_parser(r))) {
244 return access_status;
248 /* Skip authn/authz if the parent or prior request passed the authn/authz,
249 * and that configuration didn't change (this requires optimized _walk()
250 * functions in map_to_storage that use the same merge results given
251 * identical input.) If the config changes, we must re-auth.
253 if (r->prev && (r->prev->per_dir_config == r->per_dir_config)) {
254 r->user = r->prev->user;
255 r->ap_auth_type = r->prev->ap_auth_type;
257 else if (r->main && (r->main->per_dir_config == r->per_dir_config)) {
258 r->user = r->main->user;
259 r->ap_auth_type = r->main->ap_auth_type;
262 switch (ap_satisfies(r)) {
265 if ((access_status = ap_run_access_checker(r)) != OK) {
266 return decl_die(access_status,
267 "check access (with Satisfy All)", r);
270 access_status = ap_run_access_checker_ex(r);
271 if (access_status == DECLINED
272 || (access_status == OK && ap_run_force_authn(r) == OK)) {
273 if ((access_status = ap_run_check_user_id(r)) != OK) {
274 return decl_die(access_status, "check user", r);
276 if (r->user == NULL) {
277 /* don't let buggy authn module crash us in authz */
278 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00027)
279 "No authentication done but request not "
280 "allowed without authentication for %s. "
281 "Authentication not configured?",
283 access_status = HTTP_INTERNAL_SERVER_ERROR;
284 return decl_die(access_status, "check user", r);
286 if ((access_status = ap_run_auth_checker(r)) != OK) {
287 return decl_die(access_status, "check authorization", r);
290 else if (access_status == OK) {
291 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
292 "request authorized without authentication by "
293 "access_checker_ex hook: %s", r->uri);
296 return decl_die(access_status, "check access", r);
300 if ((access_status = ap_run_access_checker(r)) == OK) {
301 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
302 "request authorized without authentication by "
303 "access_checker hook and 'Satisfy any': %s",
308 access_status = ap_run_access_checker_ex(r);
309 if (access_status == DECLINED
310 || (access_status == OK && ap_run_force_authn(r) == OK)) {
311 if ((access_status = ap_run_check_user_id(r)) != OK) {
312 return decl_die(access_status, "check user", r);
314 if (r->user == NULL) {
315 /* don't let buggy authn module crash us in authz */
316 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00028)
317 "No authentication done but request not "
318 "allowed without authentication for %s. "
319 "Authentication not configured?",
321 access_status = HTTP_INTERNAL_SERVER_ERROR;
322 return decl_die(access_status, "check user", r);
324 if ((access_status = ap_run_auth_checker(r)) != OK) {
325 return decl_die(access_status, "check authorization", r);
328 else if (access_status == OK) {
329 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
330 "request authorized without authentication by "
331 "access_checker_ex hook: %s", r->uri);
334 return decl_die(access_status, "check access", r);
339 /* XXX Must make certain the ap_run_type_checker short circuits mime
340 * in mod-proxy for r->proxyreq && r->parsed_uri.scheme
341 * && !strcmp(r->parsed_uri.scheme, "http")
343 if ((access_status = ap_run_type_checker(r)) != OK) {
344 return decl_die(access_status, "find types", r);
347 if ((access_status = ap_run_fixups(r)) != OK) {
348 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "fixups hook gave %d: %s",
349 access_status, r->uri);
350 return access_status;
357 /* Useful caching structures to repeat _walk/merge sequences as required
358 * when a subrequest or redirect reuses substantially the same config.
360 * Directive order in the httpd.conf file and its Includes significantly
361 * impact this optimization. Grouping common blocks at the front of the
362 * config that are less likely to change between a request and
363 * its subrequests, or between a request and its redirects reduced
364 * the work of these functions significantly.
367 typedef struct walk_walked_t {
368 ap_conf_vector_t *matched; /* A dir_conf sections we matched */
369 ap_conf_vector_t *merged; /* The dir_conf merged result */
372 typedef struct walk_cache_t {
373 const char *cached; /* The identifier we matched */
374 ap_conf_vector_t **dir_conf_tested; /* The sections we matched against */
375 ap_conf_vector_t *dir_conf_merged; /* Base per_dir_config */
376 ap_conf_vector_t *per_dir_result; /* per_dir_config += walked result */
377 apr_array_header_t *walked; /* The list of walk_walked_t results */
378 struct walk_cache_t *prev; /* Prev cache of same call in this (sub)req */
379 int count; /* Number of prev invocations of same call in this (sub)req */
382 static walk_cache_t *prep_walk_cache(apr_size_t t, request_rec *r)
384 void **note, **inherit_note;
385 walk_cache_t *cache, *prev_cache, *copy_cache;
388 /* Find the most relevant, recent walk cache to work from and provide
389 * a copy the caller is allowed to munge. In the case of a sub-request
390 * or internal redirect, this is the cache corresponding to the equivalent
391 * invocation of the same function call in the "parent" request, if such
392 * a cache exists. Otherwise it is the walk cache of the previous
393 * invocation of the same function call in the current request, if
394 * that exists; if not, then create a new walk cache.
396 note = ap_get_request_note(r, t);
397 AP_DEBUG_ASSERT(note != NULL);
399 copy_cache = prev_cache = *note;
400 count = prev_cache ? (prev_cache->count + 1) : 0;
403 && (inherit_note = ap_get_request_note(r->prev, t))
406 && (inherit_note = ap_get_request_note(r->main, t))
408 walk_cache_t *inherit_cache = *inherit_note;
410 while (inherit_cache->count > count) {
411 inherit_cache = inherit_cache->prev;
413 if (inherit_cache->count == count) {
414 copy_cache = inherit_cache;
419 cache = apr_pmemdup(r->pool, copy_cache, sizeof(*cache));
420 cache->walked = apr_array_copy(r->pool, cache->walked);
421 cache->prev = prev_cache;
422 cache->count = count;
425 cache = apr_pcalloc(r->pool, sizeof(*cache));
426 cache->walked = apr_array_make(r->pool, 4, sizeof(walk_walked_t));
434 /*****************************************************************
436 * Getting and checking directory configuration. Also checks the
437 * FollowSymlinks and FollowSymOwner stuff, since this is really the
438 * only place that can happen (barring a new mid_dir_walk callout).
440 * We can't do it as an access_checker module function which gets
441 * called with the final per_dir_config, since we could have a directory
442 * with FollowSymLinks disabled, which contains a symlink to another
443 * with a .htaccess file which turns FollowSymLinks back on --- and
444 * access in such a case must be denied. So, whatever it is that
445 * checks FollowSymLinks needs to know the state of the options as
446 * they change, all the way down.
451 * resolve_symlink must _always_ be called on an APR_LNK file type!
452 * It will resolve the actual target file type, modification date, etc,
453 * and provide any processing required for symlink evaluation.
454 * Path must already be cleaned, no trailing slash, no multi-slashes,
455 * and don't call this on the root!
457 * Simply, the number of times we deref a symlink are minimal compared
458 * to the number of times we had an extra lstat() since we 'weren't sure'.
460 * To optimize, we stat() anything when given (opts & OPT_SYM_LINKS), otherwise
461 * we start off with an lstat(). Every lstat() must be dereferenced in case
462 * it points at a 'nasty' - we must always rerun check_safe_file (or similar.)
464 static int resolve_symlink(char *d, apr_finfo_t *lfi, int opts, apr_pool_t *p)
467 const char *savename;
469 if (!(opts & (OPT_SYM_OWNER | OPT_SYM_LINKS))) {
470 return HTTP_FORBIDDEN;
473 /* Save the name from the valid bits. */
474 savename = (lfi->valid & APR_FINFO_NAME) ? lfi->name : NULL;
476 /* if OPT_SYM_OWNER is unset, we only need to check target accessible */
477 if (!(opts & OPT_SYM_OWNER)) {
478 if (apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME | APR_FINFO_LINK), p)
481 return HTTP_FORBIDDEN;
484 /* Give back the target */
485 memcpy(lfi, &fi, sizeof(fi));
487 lfi->name = savename;
488 lfi->valid |= APR_FINFO_NAME;
494 /* OPT_SYM_OWNER only works if we can get the owner of
495 * both the file and symlink. First fill in a missing
496 * owner of the symlink, then get the info of the target.
498 if (!(lfi->valid & APR_FINFO_OWNER)) {
499 if (apr_stat(lfi, d, lfi->valid | APR_FINFO_LINK | APR_FINFO_OWNER, p)
502 return HTTP_FORBIDDEN;
506 if (apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME), p) != APR_SUCCESS) {
507 return HTTP_FORBIDDEN;
510 if (apr_uid_compare(fi.user, lfi->user) != APR_SUCCESS) {
511 return HTTP_FORBIDDEN;
514 /* Give back the target */
515 memcpy(lfi, &fi, sizeof(fi));
517 lfi->name = savename;
518 lfi->valid |= APR_FINFO_NAME;
526 * As we walk the directory configuration, the merged config won't
527 * be 'rooted' to a specific vhost until the very end of the merge.
529 * We need a very fast mini-merge to a real, vhost-rooted merge
530 * of core.opts and core.override, the only options tested within
531 * directory_walk itself.
533 * See core.c::merge_core_dir_configs() for explanation.
536 typedef struct core_opts_t {
537 allow_options_t opts;
539 allow_options_t remove;
540 overrides_t override;
541 overrides_t override_opts;
542 apr_table_t *override_list;
545 static void core_opts_merge(const ap_conf_vector_t *sec, core_opts_t *opts)
547 core_dir_config *this_dir = ap_get_core_module_config(sec);
553 if (this_dir->opts & OPT_UNSET) {
554 opts->add = (opts->add & ~this_dir->opts_remove)
555 | this_dir->opts_add;
556 opts->remove = (opts->remove & ~this_dir->opts_add)
557 | this_dir->opts_remove;
558 opts->opts = (opts->opts & ~opts->remove) | opts->add;
561 opts->opts = this_dir->opts;
562 opts->add = this_dir->opts_add;
563 opts->remove = this_dir->opts_remove;
566 if (!(this_dir->override & OR_UNSET)) {
567 opts->override = this_dir->override;
568 opts->override_opts = this_dir->override_opts;
571 if (this_dir->override_list != NULL) {
572 opts->override_list = this_dir->override_list;
577 /*****************************************************************
579 * Getting and checking directory configuration. Also checks the
580 * FollowSymlinks and FollowSymOwner stuff, since this is really the
581 * only place that can happen (barring a new mid_dir_walk callout).
583 * We can't do it as an access_checker module function which gets
584 * called with the final per_dir_config, since we could have a directory
585 * with FollowSymLinks disabled, which contains a symlink to another
586 * with a .htaccess file which turns FollowSymLinks back on --- and
587 * access in such a case must be denied. So, whatever it is that
588 * checks FollowSymLinks needs to know the state of the options as
589 * they change, all the way down.
592 AP_DECLARE(int) ap_directory_walk(request_rec *r)
594 ap_conf_vector_t *now_merged = NULL;
595 core_server_config *sconf =
596 ap_get_core_module_config(r->server->module_config);
597 ap_conf_vector_t **sec_ent = (ap_conf_vector_t **) sconf->sec_dir->elts;
598 int num_sec = sconf->sec_dir->nelts;
604 /* XXX: Better (faster) tests needed!!!
606 * "OK" as a response to a real problem is not _OK_, but to allow broken
607 * modules to proceed, we will permit the not-a-path filename to pass the
608 * following two tests. This behavior may be revoked in future versions
609 * of Apache. We still must catch it later if it's heading for the core
610 * handler. Leave INFO notes here for module debugging.
612 if (r->filename == NULL) {
613 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00029)
614 "Module bug? Request filename is missing for URI %s",
619 /* Canonicalize the file path without resolving filename case or aliases
620 * so we can begin by checking the cache for a recent directory walk.
621 * This call will ensure we have an absolute path in the same pass.
623 if ((rv = apr_filepath_merge(&entry_dir, NULL, r->filename,
624 APR_FILEPATH_NOTRELATIVE, r->pool))
626 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00030)
627 "Module bug? Request filename path %s is invalid or "
628 "or not absolute for uri %s",
629 r->filename, r->uri);
633 /* XXX Notice that this forces path_info to be canonical. That might
634 * not be desired by all apps. However, some of those same apps likely
635 * have significant security holes.
637 r->filename = entry_dir;
639 cache = prep_walk_cache(AP_NOTE_DIRECTORY_WALK, r);
640 cached = (cache->cached != NULL);
642 /* If this is not a dirent subrequest with a preconstructed
643 * r->finfo value, then we can simply stat the filename to
644 * save burning mega-cycles with unneeded stats - if this is
645 * an exact file match. We don't care about failure... we
646 * will stat by component failing this meager attempt.
648 * It would be nice to distinguish APR_ENOENT from other
649 * types of failure, such as APR_ENOTDIR. We can do something
650 * with APR_ENOENT, knowing that the path is good.
652 if (r->finfo.filetype == APR_NOFILE || r->finfo.filetype == APR_LNK) {
653 rv = ap_run_dirwalk_stat(&r->finfo, r, APR_FINFO_MIN);
655 /* some OSs will return APR_SUCCESS/APR_REG if we stat
656 * a regular file but we have '/' at the end of the name;
658 * other OSs will return APR_ENOTDIR for that situation;
660 * handle it the same everywhere by simulating a failure
661 * if it looks like a directory but really isn't
663 * Also reset if the stat failed, just for safety.
665 if ((rv != APR_SUCCESS) ||
666 (r->finfo.filetype != APR_NOFILE &&
667 (r->finfo.filetype != APR_DIR) &&
668 (r->filename[strlen(r->filename) - 1] == '/'))) {
669 r->finfo.filetype = APR_NOFILE; /* forget what we learned */
673 if (r->finfo.filetype == APR_REG) {
674 entry_dir = ap_make_dirstr_parent(r->pool, entry_dir);
676 else if (r->filename[strlen(r->filename) - 1] != '/') {
677 entry_dir = apr_pstrcat(r->pool, r->filename, "/", NULL);
680 /* If we have a file already matches the path of r->filename,
681 * and the vhost's list of directory sections hasn't changed,
682 * we can skip rewalking the directory_walk entries.
685 && ((r->finfo.filetype == APR_REG)
686 || ((r->finfo.filetype == APR_DIR)
687 && (!r->path_info || !*r->path_info)))
688 && (cache->dir_conf_tested == sec_ent)
689 && (strcmp(entry_dir, cache->cached) == 0)) {
692 /* Well this looks really familiar! If our end-result (per_dir_result)
693 * didn't change, we have absolutely nothing to do :)
694 * Otherwise (as is the case with most dir_merged/file_merged requests)
695 * we must merge our dir_conf_merged onto this new r->per_dir_config.
697 if (r->per_dir_config == cache->per_dir_result) {
701 if (r->per_dir_config == cache->dir_conf_merged) {
702 r->per_dir_config = cache->per_dir_result;
707 apr_finfo_t thisinfo;
709 allow_options_t opts;
710 core_dir_config *this_dir;
712 this_dir = ap_get_core_module_config(r->per_dir_config);
713 opts = this_dir->opts;
715 * If Symlinks are allowed in general we do not need the following
718 if (!(opts & OPT_SYM_LINKS)) {
719 rv = ap_run_dirwalk_stat(&thisinfo, r,
720 APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
722 * APR_INCOMPLETE is as fine as result as APR_SUCCESS as we
723 * have added APR_FINFO_NAME to the wanted parameter of
724 * apr_stat above. On Unix platforms this means that apr_stat
725 * is always going to return APR_INCOMPLETE in the case that
726 * the call to the native stat / lstat did not fail.
728 if ((rv != APR_INCOMPLETE) && (rv != APR_SUCCESS)) {
730 * This should never happen, because we did a stat on the
731 * same file, resolving a possible symlink several lines
732 * above. Therefore do not make a detailed analysis of rv
733 * in this case for the reason of the failure, just bail out
734 * with a HTTP_FORBIDDEN in case we hit a race condition
737 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00031)
738 "access to %s failed; stat of '%s' failed.",
739 r->uri, r->filename);
740 return r->status = HTTP_FORBIDDEN;
742 if (thisinfo.filetype == APR_LNK) {
743 /* Is this a possibly acceptable symlink? */
744 if ((res = resolve_symlink(r->filename, &thisinfo,
745 opts, r->pool)) != OK) {
746 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00032)
747 "Symbolic link not allowed "
748 "or link target not accessible: %s",
750 return r->status = res;
757 if (cache->walked->nelts) {
758 now_merged = ((walk_walked_t*)cache->walked->elts)
759 [cache->walked->nelts - 1].merged;
763 /* We start now_merged from NULL since we want to build
764 * a locations list that can be merged to any vhost.
767 int matches = cache->walked->nelts;
768 int cached_matches = matches;
769 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
770 core_dir_config *this_dir;
772 apr_finfo_t thisinfo;
773 char *save_path_info;
776 unsigned int seg, startseg;
777 apr_pool_t *rxpool = NULL;
779 /* Invariant: from the first time filename_len is set until
780 * it goes out of scope, filename_len==strlen(r->filename)
782 apr_size_t filename_len;
783 #ifdef CASE_BLIND_FILESYSTEM
784 apr_size_t canonical_len;
787 cached &= auth_internal_per_conf;
790 * We must play our own mini-merge game here, for the few
791 * running dir_config values we care about within dir_walk.
792 * We didn't start the merge from r->per_dir_config, so we
793 * accumulate opts and override as we merge, from the globals.
795 this_dir = ap_get_core_module_config(r->per_dir_config);
796 opts.opts = this_dir->opts;
797 opts.add = this_dir->opts_add;
798 opts.remove = this_dir->opts_remove;
799 opts.override = this_dir->override;
800 opts.override_opts = this_dir->override_opts;
801 opts.override_list = this_dir->override_list;
803 /* Set aside path_info to merge back onto path_info later.
804 * If r->filename is a directory, we must remerge the path_info,
805 * before we continue! [Directories cannot, by definition, have
806 * path info. Either the next segment is not-found, or a file.]
808 * r->path_info tracks the unconsumed source path.
809 * r->filename tracks the path as we process it
811 if ((r->finfo.filetype == APR_DIR) && r->path_info && *r->path_info)
813 if ((rv = apr_filepath_merge(&r->path_info, r->filename,
815 APR_FILEPATH_NOTABOVEROOT, r->pool))
817 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00033)
818 "dir_walk error, path_info %s is not relative "
819 "to the filename path %s for uri %s",
820 r->path_info, r->filename, r->uri);
821 return HTTP_INTERNAL_SERVER_ERROR;
824 save_path_info = NULL;
827 save_path_info = r->path_info;
828 r->path_info = r->filename;
831 #ifdef CASE_BLIND_FILESYSTEM
834 while (r->canonical_filename && r->canonical_filename[canonical_len]
835 && (r->canonical_filename[canonical_len]
836 == r->path_info[canonical_len])) {
841 && ((r->canonical_filename[canonical_len - 1] != '/'
842 && r->canonical_filename[canonical_len - 1])
843 || (r->path_info[canonical_len - 1] != '/'
844 && r->path_info[canonical_len - 1]))) {
849 * Now build r->filename component by component, starting
850 * with the root (on Unix, simply "/"). We will make a huge
851 * assumption here for efficiency, that any canonical path
852 * already given included a canonical root.
854 rv = apr_filepath_root((const char **)&r->filename,
855 (const char **)&r->path_info,
856 canonical_len ? 0 : APR_FILEPATH_TRUENAME,
858 filename_len = strlen(r->filename);
861 * Bad assumption above? If the root's length is longer
862 * than the canonical length, then it cannot be trusted as
863 * a truename. So try again, this time more seriously.
865 if ((rv == APR_SUCCESS) && canonical_len
866 && (filename_len > canonical_len)) {
867 rv = apr_filepath_root((const char **)&r->filename,
868 (const char **)&r->path_info,
869 APR_FILEPATH_TRUENAME, r->pool);
870 filename_len = strlen(r->filename);
874 #else /* ndef CASE_BLIND_FILESYSTEM, really this simple for Unix today; */
876 rv = apr_filepath_root((const char **)&r->filename,
877 (const char **)&r->path_info,
879 filename_len = strlen(r->filename);
883 if (rv != APR_SUCCESS) {
884 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00034)
885 "dir_walk error, could not determine the root "
886 "path of filename %s%s for uri %s",
887 r->filename, r->path_info, r->uri);
888 return HTTP_INTERNAL_SERVER_ERROR;
891 /* Working space for terminating null and an extra / is required.
893 buflen = filename_len + strlen(r->path_info) + 2;
894 buf = apr_palloc(r->pool, buflen);
895 memcpy(buf, r->filename, filename_len + 1);
897 thisinfo.valid = APR_FINFO_TYPE;
898 thisinfo.filetype = APR_DIR; /* It's the root, of course it's a dir */
901 * seg keeps track of which segment we've copied.
902 * sec_idx keeps track of which section we're on, since sections are
903 * ordered by number of segments. See core_reorder_directories
904 * startseg tells us how many segments describe the root path
905 * e.g. the complete path "//host/foo/" to a UNC share (4)
907 startseg = seg = ap_count_dirs(r->filename);
911 * Go down the directory hierarchy. Where we have to check for
912 * symlinks, do so. Where a .htaccess file has permission to
913 * override anything, try to find one.
921 /* We have no trailing slash, but we sure would appreciate one.
922 * However, we don't want to append a / our first time through.
924 if ((seg > startseg) && r->filename[filename_len-1] != '/') {
925 r->filename[filename_len++] = '/';
926 r->filename[filename_len] = 0;
930 /* Begin *this* level by looking for matching <Directory> sections
931 * from the server config.
933 for (; sec_idx < num_sec; ++sec_idx) {
935 ap_conf_vector_t *entry_config = sec_ent[sec_idx];
936 core_dir_config *entry_core;
937 entry_core = ap_get_core_module_config(entry_config);
939 /* No more possible matches for this many segments?
940 * We are done when we find relative/regex/longer components.
942 if (entry_core->r || entry_core->d_components > seg) {
946 /* We will never skip '0' element components, e.g. plain old
947 * <Directory >, and <Directory "/"> are classified as zero
948 * so that Win32/Netware/OS2 etc all pick them up.
949 * Otherwise, skip over the mismatches.
951 if (entry_core->d_components
952 && ((entry_core->d_components < seg)
953 || (entry_core->d_is_fnmatch
954 ? (apr_fnmatch(entry_core->d, r->filename,
955 APR_FNM_PATHNAME) != APR_SUCCESS)
956 : (strcmp(r->filename, entry_core->d) != 0)))) {
960 /* If we haven't continue'd above, we have a match.
962 * Calculate our full-context core opts & override.
964 core_opts_merge(sec_ent[sec_idx], &opts);
966 /* If we merged this same section last time, reuse it
969 if (last_walk->matched == sec_ent[sec_idx]) {
970 now_merged = last_walk->merged;
976 /* We fell out of sync. This is our own copy of walked,
977 * so truncate the remaining matches and reset remaining.
979 cache->walked->nelts -= matches;
985 now_merged = ap_merge_per_dir_configs(r->pool,
990 now_merged = sec_ent[sec_idx];
993 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
994 last_walk->matched = sec_ent[sec_idx];
995 last_walk->merged = now_merged;
998 /* If .htaccess files are enabled, check for one, provided we
999 * have reached a real path.
1001 do { /* Not really a loop, just a break'able code block */
1003 ap_conf_vector_t *htaccess_conf = NULL;
1005 /* No htaccess in an incomplete root path,
1006 * nor if it's disabled
1008 if (seg < startseg || (!opts.override
1009 && apr_is_empty_table(opts.override_list)
1015 res = ap_parse_htaccess(&htaccess_conf, r, opts.override,
1016 opts.override_opts, opts.override_list,
1017 r->filename, sconf->access_name);
1022 if (!htaccess_conf) {
1026 /* If we are still here, we found our htaccess.
1028 * Calculate our full-context core opts & override.
1030 core_opts_merge(htaccess_conf, &opts);
1032 /* If we merged this same htaccess last time, reuse it...
1033 * this wouldn't work except that we cache the htaccess
1034 * sections for the lifetime of the request, so we match
1035 * the same conf. Good planning (no, pure luck ;)
1038 if (last_walk->matched == htaccess_conf) {
1039 now_merged = last_walk->merged;
1045 /* We fell out of sync. This is our own copy of walked,
1046 * so truncate the remaining matches and reset
1049 cache->walked->nelts -= matches;
1055 now_merged = ap_merge_per_dir_configs(r->pool,
1060 now_merged = htaccess_conf;
1063 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1064 last_walk->matched = htaccess_conf;
1065 last_walk->merged = now_merged;
1067 } while (0); /* Only one htaccess, not a real loop */
1069 /* That temporary trailing slash was useful, now drop it.
1072 r->filename[--filename_len] = '\0';
1075 /* Time for all good things to come to an end?
1077 if (!r->path_info || !*r->path_info) {
1081 /* Now it's time for the next segment...
1082 * We will assume the next element is an end node, and fix it up
1083 * below as necessary...
1086 seg_name = r->filename + filename_len;
1087 delim = strchr(r->path_info + (*r->path_info == '/' ? 1 : 0), '/');
1089 apr_size_t path_info_len = delim - r->path_info;
1091 memcpy(seg_name, r->path_info, path_info_len + 1);
1092 filename_len += path_info_len;
1093 r->path_info = delim;
1097 apr_size_t path_info_len = strlen(r->path_info);
1098 memcpy(seg_name, r->path_info, path_info_len + 1);
1099 filename_len += path_info_len;
1100 r->path_info += path_info_len;
1102 if (*seg_name == '/')
1105 /* If nothing remained but a '/' string, we are finished
1106 * XXX: NO WE ARE NOT!!! Now process this puppy!!! */
1111 /* First optimization;
1112 * If...we knew r->filename was a file, and
1113 * if...we have strict (case-sensitive) filenames, or
1114 * we know the canonical_filename matches to _this_ name, and
1115 * if...we have allowed symlinks
1116 * skip the lstat and dummy up an APR_DIR value for thisinfo.
1118 if (r->finfo.filetype != APR_NOFILE
1119 #ifdef CASE_BLIND_FILESYSTEM
1120 && (filename_len <= canonical_len)
1122 && ((opts.opts & (OPT_SYM_OWNER | OPT_SYM_LINKS)) == OPT_SYM_LINKS))
1125 thisinfo.filetype = APR_DIR;
1130 /* We choose apr_stat with flag APR_FINFO_LINK here, rather that
1131 * plain apr_stat, so that we capture this path object rather than
1132 * its target. We will replace the info with our target's info
1133 * below. We especially want the name of this 'link' object, not
1134 * the name of its target, if we are fixing the filename
1135 * case/resolving aliases.
1137 rv = ap_run_dirwalk_stat(&thisinfo, r,
1138 APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
1140 if (APR_STATUS_IS_ENOENT(rv)) {
1141 /* Nothing? That could be nice. But our directory
1144 thisinfo.filetype = APR_NOFILE;
1147 else if (APR_STATUS_IS_EACCES(rv)) {
1148 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00035)
1149 "access to %s denied (filesystem path '%s') "
1150 "because search permissions are missing on a "
1151 "component of the path", r->uri, r->filename);
1152 return r->status = HTTP_FORBIDDEN;
1154 else if ((rv != APR_SUCCESS && rv != APR_INCOMPLETE)
1155 || !(thisinfo.valid & APR_FINFO_TYPE)) {
1156 /* If we hit ENOTDIR, we must have over-optimized, deny
1157 * rather than assume not found.
1159 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00036)
1160 "access to %s failed (filesystem path '%s')",
1161 r->uri, r->filename);
1162 return r->status = HTTP_FORBIDDEN;
1165 /* Fix up the path now if we have a name, and they don't agree
1167 if ((thisinfo.valid & APR_FINFO_NAME)
1168 && strcmp(seg_name, thisinfo.name)) {
1169 /* TODO: provide users an option that an internal/external
1170 * redirect is required here? We need to walk the URI and
1171 * filename in tandem to properly correlate these.
1173 strcpy(seg_name, thisinfo.name);
1174 filename_len = strlen(r->filename);
1177 if (thisinfo.filetype == APR_LNK) {
1178 /* Is this a possibly acceptable symlink?
1180 if ((res = resolve_symlink(r->filename, &thisinfo,
1181 opts.opts, r->pool)) != OK) {
1182 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00037)
1183 "Symbolic link not allowed "
1184 "or link target not accessible: %s",
1186 return r->status = res;
1190 /* Ok, we are done with the link's info, test the real target
1192 if (thisinfo.filetype == APR_REG ||
1193 thisinfo.filetype == APR_NOFILE) {
1194 /* That was fun, nothing left for us here
1198 else if (thisinfo.filetype != APR_DIR) {
1199 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00038)
1200 "Forbidden: %s doesn't point to "
1201 "a file or directory",
1203 return r->status = HTTP_FORBIDDEN;
1207 } while (thisinfo.filetype == APR_DIR);
1209 /* If we have _not_ optimized, this is the time to recover
1210 * the final stat result.
1212 if (r->finfo.filetype == APR_NOFILE || r->finfo.filetype == APR_LNK) {
1213 r->finfo = thisinfo;
1216 /* Now splice the saved path_info back onto any new path_info
1218 if (save_path_info) {
1219 if (r->path_info && *r->path_info) {
1220 r->path_info = ap_make_full_path(r->pool, r->path_info,
1224 r->path_info = save_path_info;
1229 * Now we'll deal with the regexes, note we pick up sec_idx
1230 * where we left off (we gave up after we hit entry_core->r)
1232 for (; sec_idx < num_sec; ++sec_idx) {
1236 ap_regmatch_t *pmatch = NULL;
1238 core_dir_config *entry_core;
1239 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1241 if (!entry_core->r) {
1245 if (entry_core->refs && entry_core->refs->nelts) {
1247 apr_pool_create(&rxpool, r->pool);
1249 nmatch = entry_core->refs->nelts;
1250 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1253 if (ap_regexec(entry_core->r, r->filename, nmatch, pmatch, 0)) {
1257 for (i = 0; i < nmatch; i++) {
1258 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1259 ((const char **)entry_core->refs->elts)[i]) {
1260 apr_table_setn(r->subprocess_env,
1261 ((const char **)entry_core->refs->elts)[i],
1262 apr_pstrndup(r->pool,
1263 r->filename + pmatch[i].rm_so,
1264 pmatch[i].rm_eo - pmatch[i].rm_so));
1268 /* If we haven't already continue'd above, we have a match.
1270 * Calculate our full-context core opts & override.
1272 core_opts_merge(sec_ent[sec_idx], &opts);
1274 /* If we merged this same section last time, reuse it
1277 if (last_walk->matched == sec_ent[sec_idx]) {
1278 now_merged = last_walk->merged;
1284 /* We fell out of sync. This is our own copy of walked,
1285 * so truncate the remaining matches and reset remaining.
1287 cache->walked->nelts -= matches;
1293 now_merged = ap_merge_per_dir_configs(r->pool,
1298 now_merged = sec_ent[sec_idx];
1301 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1302 last_walk->matched = sec_ent[sec_idx];
1303 last_walk->merged = now_merged;
1307 apr_pool_destroy(rxpool);
1310 /* Whoops - everything matched in sequence, but either the original
1311 * walk found some additional matches (which we need to truncate), or
1312 * this walk found some additional matches.
1315 cache->walked->nelts -= matches;
1318 else if (cache->walked->nelts > cached_matches) {
1323 /* It seems this shouldn't be needed anymore. We translated the
1324 x symlink above into a real resource, and should have died up there.
1325 x Even if we keep this, it needs more thought (maybe an r->file_is_symlink)
1326 x perhaps it should actually happen in file_walk, so we catch more
1327 x obscure cases in autoindex subrequests, etc.
1329 x * Symlink permissions are determined by the parent. If the request is
1330 x * for a directory then applying the symlink test here would use the
1331 x * permissions of the directory as opposed to its parent. Consider a
1332 x * symlink pointing to a dir with a .htaccess disallowing symlinks. If
1333 x * you access /symlink (or /symlink/) you would get a 403 without this
1334 x * APR_DIR test. But if you accessed /symlink/index.html, for example,
1335 x * you would *not* get the 403.
1337 x if (r->finfo.filetype != APR_DIR
1338 x && (res = resolve_symlink(r->filename, r->info, ap_allow_options(r),
1340 x ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1341 x "Symbolic link not allowed: %s", r->filename);
1346 /* Save future sub-requestors much angst in processing
1347 * this subrequest. If dir_walk couldn't canonicalize
1348 * the file path, nothing can.
1350 r->canonical_filename = r->filename;
1352 if (r->finfo.filetype == APR_DIR) {
1353 cache->cached = r->filename;
1356 cache->cached = ap_make_dirstr_parent(r->pool, r->filename);
1360 && r->per_dir_config == cache->dir_conf_merged) {
1361 r->per_dir_config = cache->per_dir_result;
1365 cache->dir_conf_tested = sec_ent;
1366 cache->dir_conf_merged = r->per_dir_config;
1368 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1369 * and note the end result to (potentially) skip this step next time.
1372 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1376 cache->per_dir_result = r->per_dir_config;
1382 AP_DECLARE(int) ap_location_walk(request_rec *r)
1384 ap_conf_vector_t *now_merged = NULL;
1385 core_server_config *sconf =
1386 ap_get_core_module_config(r->server->module_config);
1387 ap_conf_vector_t **sec_ent = (ap_conf_vector_t **)sconf->sec_url->elts;
1388 int num_sec = sconf->sec_url->nelts;
1389 walk_cache_t *cache;
1390 const char *entry_uri;
1393 /* No tricks here, there are no <Locations > to parse in this vhost.
1394 * We won't destroy the cache, just in case _this_ redirect is later
1395 * redirected again to a vhost with <Location > blocks to optimize.
1401 cache = prep_walk_cache(AP_NOTE_LOCATION_WALK, r);
1402 cached = (cache->cached != NULL);
1404 /* Location and LocationMatch differ on their behaviour w.r.t. multiple
1405 * slashes. Location matches multiple slashes with a single slash,
1406 * LocationMatch doesn't. An exception, for backwards brokenness is
1407 * absoluteURIs... in which case neither match multiple slashes.
1409 if (r->uri[0] != '/') {
1413 char *uri = apr_pstrdup(r->pool, r->uri);
1418 /* If we have an cache->cached location that matches r->uri,
1419 * and the vhost's list of locations hasn't changed, we can skip
1420 * rewalking the location_walk entries.
1423 && (cache->dir_conf_tested == sec_ent)
1424 && (strcmp(entry_uri, cache->cached) == 0)) {
1425 /* Well this looks really familiar! If our end-result (per_dir_result)
1426 * didn't change, we have absolutely nothing to do :)
1427 * Otherwise (as is the case with most dir_merged/file_merged requests)
1428 * we must merge our dir_conf_merged onto this new r->per_dir_config.
1430 if (r->per_dir_config == cache->per_dir_result) {
1434 if (cache->walked->nelts) {
1435 now_merged = ((walk_walked_t*)cache->walked->elts)
1436 [cache->walked->nelts - 1].merged;
1440 /* We start now_merged from NULL since we want to build
1441 * a locations list that can be merged to any vhost.
1444 int matches = cache->walked->nelts;
1445 int cached_matches = matches;
1446 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1447 apr_pool_t *rxpool = NULL;
1449 cached &= auth_internal_per_conf;
1450 cache->cached = entry_uri;
1452 /* Go through the location entries, and check for matches.
1453 * We apply the directive sections in given order, we should
1454 * really try them with the most general first.
1456 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1458 core_dir_config *entry_core;
1459 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1461 /* ### const strlen can be optimized in location config parsing */
1462 len = strlen(entry_core->d);
1464 /* Test the regex, fnmatch or string as appropriate.
1465 * If it's a strcmp, and the <Location > pattern was
1466 * not slash terminated, then this uri must be slash
1467 * terminated (or at the end of the string) to match.
1469 if (entry_core->r) {
1473 ap_regmatch_t *pmatch = NULL;
1475 if (entry_core->refs && entry_core->refs->nelts) {
1477 apr_pool_create(&rxpool, r->pool);
1479 nmatch = entry_core->refs->nelts;
1480 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1483 if (ap_regexec(entry_core->r, r->uri, nmatch, pmatch, 0)) {
1487 for (i = 0; i < nmatch; i++) {
1488 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1489 ((const char **)entry_core->refs->elts)[i]) {
1490 apr_table_setn(r->subprocess_env,
1491 ((const char **)entry_core->refs->elts)[i],
1492 apr_pstrndup(r->pool,
1493 r->uri + pmatch[i].rm_so,
1494 pmatch[i].rm_eo - pmatch[i].rm_so));
1501 if ((entry_core->d_is_fnmatch
1502 ? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1503 : (strncmp(entry_core->d, cache->cached, len)
1505 && entry_core->d[len - 1] != '/'
1506 && cache->cached[len] != '/'
1507 && cache->cached[len] != '\0')))) {
1513 /* If we merged this same section last time, reuse it
1516 if (last_walk->matched == sec_ent[sec_idx]) {
1517 now_merged = last_walk->merged;
1523 /* We fell out of sync. This is our own copy of walked,
1524 * so truncate the remaining matches and reset remaining.
1526 cache->walked->nelts -= matches;
1532 now_merged = ap_merge_per_dir_configs(r->pool,
1537 now_merged = sec_ent[sec_idx];
1540 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1541 last_walk->matched = sec_ent[sec_idx];
1542 last_walk->merged = now_merged;
1546 apr_pool_destroy(rxpool);
1549 /* Whoops - everything matched in sequence, but either the original
1550 * walk found some additional matches (which we need to truncate), or
1551 * this walk found some additional matches.
1554 cache->walked->nelts -= matches;
1557 else if (cache->walked->nelts > cached_matches) {
1563 && r->per_dir_config == cache->dir_conf_merged) {
1564 r->per_dir_config = cache->per_dir_result;
1568 cache->dir_conf_tested = sec_ent;
1569 cache->dir_conf_merged = r->per_dir_config;
1571 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1572 * and note the end result to (potentially) skip this step next time.
1575 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1579 cache->per_dir_result = r->per_dir_config;
1584 AP_DECLARE(int) ap_file_walk(request_rec *r)
1586 ap_conf_vector_t *now_merged = NULL;
1587 core_dir_config *dconf = ap_get_core_module_config(r->per_dir_config);
1588 ap_conf_vector_t **sec_ent = NULL;
1590 walk_cache_t *cache;
1591 const char *test_file;
1594 if (dconf->sec_file) {
1595 sec_ent = (ap_conf_vector_t **)dconf->sec_file->elts;
1596 num_sec = dconf->sec_file->nelts;
1599 /* To allow broken modules to proceed, we allow missing filenames to pass.
1600 * We will catch it later if it's heading for the core handler.
1601 * directory_walk already posted an INFO note for module debugging.
1603 if (r->filename == NULL) {
1607 cache = prep_walk_cache(AP_NOTE_FILE_WALK, r);
1608 cached = (cache->cached != NULL);
1610 /* No tricks here, there are just no <Files > to parse in this context.
1611 * We won't destroy the cache, just in case _this_ redirect is later
1612 * redirected again to a context containing the same or similar <Files >.
1618 /* Get the basename .. and copy for the cache just
1619 * in case r->filename is munged by another module
1621 test_file = strrchr(r->filename, '/');
1622 if (test_file == NULL) {
1623 test_file = apr_pstrdup(r->pool, r->filename);
1626 test_file = apr_pstrdup(r->pool, ++test_file);
1629 /* If we have an cache->cached file name that matches test_file,
1630 * and the directory's list of file sections hasn't changed, we
1631 * can skip rewalking the file_walk entries.
1634 && (cache->dir_conf_tested == sec_ent)
1635 && (strcmp(test_file, cache->cached) == 0)) {
1636 /* Well this looks really familiar! If our end-result (per_dir_result)
1637 * didn't change, we have absolutely nothing to do :)
1638 * Otherwise (as is the case with most dir_merged requests)
1639 * we must merge our dir_conf_merged onto this new r->per_dir_config.
1641 if (r->per_dir_config == cache->per_dir_result) {
1645 if (cache->walked->nelts) {
1646 now_merged = ((walk_walked_t*)cache->walked->elts)
1647 [cache->walked->nelts - 1].merged;
1651 /* We start now_merged from NULL since we want to build
1652 * a file section list that can be merged to any dir_walk.
1655 int matches = cache->walked->nelts;
1656 int cached_matches = matches;
1657 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1658 apr_pool_t *rxpool = NULL;
1660 cached &= auth_internal_per_conf;
1661 cache->cached = test_file;
1663 /* Go through the location entries, and check for matches.
1664 * We apply the directive sections in given order, we should
1665 * really try them with the most general first.
1667 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1668 core_dir_config *entry_core;
1669 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1671 if (entry_core->r) {
1675 ap_regmatch_t *pmatch = NULL;
1677 if (entry_core->refs && entry_core->refs->nelts) {
1679 apr_pool_create(&rxpool, r->pool);
1681 nmatch = entry_core->refs->nelts;
1682 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1685 if (ap_regexec(entry_core->r, cache->cached, nmatch, pmatch, 0)) {
1689 for (i = 0; i < nmatch; i++) {
1690 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1691 ((const char **)entry_core->refs->elts)[i]) {
1692 apr_table_setn(r->subprocess_env,
1693 ((const char **)entry_core->refs->elts)[i],
1694 apr_pstrndup(r->pool,
1695 cache->cached + pmatch[i].rm_so,
1696 pmatch[i].rm_eo - pmatch[i].rm_so));
1702 if ((entry_core->d_is_fnmatch
1703 ? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1704 : strcmp(entry_core->d, cache->cached))) {
1709 /* If we merged this same section last time, reuse it
1712 if (last_walk->matched == sec_ent[sec_idx]) {
1713 now_merged = last_walk->merged;
1719 /* We fell out of sync. This is our own copy of walked,
1720 * so truncate the remaining matches and reset remaining.
1722 cache->walked->nelts -= matches;
1728 now_merged = ap_merge_per_dir_configs(r->pool,
1733 now_merged = sec_ent[sec_idx];
1736 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1737 last_walk->matched = sec_ent[sec_idx];
1738 last_walk->merged = now_merged;
1742 apr_pool_destroy(rxpool);
1745 /* Whoops - everything matched in sequence, but either the original
1746 * walk found some additional matches (which we need to truncate), or
1747 * this walk found some additional matches.
1750 cache->walked->nelts -= matches;
1753 else if (cache->walked->nelts > cached_matches) {
1759 && r->per_dir_config == cache->dir_conf_merged) {
1760 r->per_dir_config = cache->per_dir_result;
1764 cache->dir_conf_tested = sec_ent;
1765 cache->dir_conf_merged = r->per_dir_config;
1767 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1768 * and note the end result to (potentially) skip this step next time.
1771 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1775 cache->per_dir_result = r->per_dir_config;
1780 AP_DECLARE(int) ap_if_walk(request_rec *r)
1782 ap_conf_vector_t *now_merged = NULL;
1783 core_dir_config *dconf = ap_get_core_module_config(r->per_dir_config);
1784 ap_conf_vector_t **sec_ent = NULL;
1786 walk_cache_t *cache;
1791 int prev_result = -1;
1792 walk_walked_t *last_walk;
1794 if (dconf->sec_if) {
1795 sec_ent = (ap_conf_vector_t **)dconf->sec_if->elts;
1796 num_sec = dconf->sec_if->nelts;
1799 /* No tricks here, there are just no <If > to parse in this context.
1800 * We won't destroy the cache, just in case _this_ redirect is later
1801 * redirected again to a context containing the same or similar <If >.
1807 cache = prep_walk_cache(AP_NOTE_IF_WALK, r);
1808 cached = (cache->cached != NULL);
1809 cache->cached = (void *)1;
1810 matches = cache->walked->nelts;
1811 cached_matches = matches;
1812 last_walk = (walk_walked_t*)cache->walked->elts;
1814 cached &= auth_internal_per_conf;
1816 /* Go through the if entries, and check for matches */
1817 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1818 const char *err = NULL;
1819 core_dir_config *entry_core;
1821 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1823 AP_DEBUG_ASSERT(entry_core->condition_ifelse != 0);
1824 if (entry_core->condition_ifelse & AP_CONDITION_ELSE) {
1825 AP_DEBUG_ASSERT(prev_result != -1);
1826 if (prev_result == 1)
1830 if (entry_core->condition_ifelse & AP_CONDITION_IF) {
1831 rc = ap_expr_exec(r, entry_core->condition, &err);
1834 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00039)
1835 "Failed to evaluate <If > condition: %s",
1846 /* If we merged this same section last time, reuse it
1849 if (last_walk->matched == sec_ent[sec_idx]) {
1850 now_merged = last_walk->merged;
1856 /* We fell out of sync. This is our own copy of walked,
1857 * so truncate the remaining matches and reset remaining.
1859 cache->walked->nelts -= matches;
1865 now_merged = ap_merge_per_dir_configs(r->pool,
1870 now_merged = sec_ent[sec_idx];
1873 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1874 last_walk->matched = sec_ent[sec_idx];
1875 last_walk->merged = now_merged;
1878 /* Everything matched in sequence, but it may be that the original
1879 * walk found some additional matches (which we need to truncate), or
1880 * this walk found some additional matches.
1883 cache->walked->nelts -= matches;
1886 else if (cache->walked->nelts > cached_matches) {
1891 && r->per_dir_config == cache->dir_conf_merged) {
1892 r->per_dir_config = cache->per_dir_result;
1896 cache->dir_conf_tested = sec_ent;
1897 cache->dir_conf_merged = r->per_dir_config;
1899 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1900 * and note the end result to (potentially) skip this step next time.
1903 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1907 cache->per_dir_result = r->per_dir_config;
1912 /*****************************************************************
1914 * The sub_request mechanism.
1916 * Fns to look up a relative URI from, e.g., a map file or SSI document.
1917 * These do all access checks, etc., but don't actually run the transaction
1918 * ... use run_sub_req below for that. Also, be sure to use destroy_sub_req
1919 * as appropriate if you're likely to be creating more than a few of these.
1920 * (An early Apache version didn't destroy the sub_reqs used in directory
1921 * indexing. The result, when indexing a directory with 800-odd files in
1922 * it, was massively excessive storage allocation).
1924 * Note more manipulation of protocol-specific vars in the request
1928 static request_rec *make_sub_request(const request_rec *r,
1929 ap_filter_t *next_filter)
1934 apr_pool_create(&rrp, r->pool);
1935 apr_pool_tag(rrp, "subrequest");
1936 rnew = apr_pcalloc(rrp, sizeof(request_rec));
1939 rnew->hostname = r->hostname;
1940 rnew->request_time = r->request_time;
1941 rnew->connection = r->connection;
1942 rnew->server = r->server;
1945 rnew->request_config = ap_create_request_config(rnew->pool);
1947 /* Start a clean config from this subrequest's vhost. Optimization in
1948 * Location/File/Dir walks from the parent request assure that if the
1949 * config blocks of the subrequest match the parent request, no merges
1950 * will actually occur (and generally a minimal number of merges are
1951 * required, even if the parent and subrequest aren't quite identical.)
1953 rnew->per_dir_config = r->server->lookup_defaults;
1955 rnew->htaccess = r->htaccess;
1956 rnew->allowed_methods = ap_make_method_list(rnew->pool, 2);
1958 /* make a copy of the allowed-methods list */
1959 ap_copy_method_list(rnew->allowed_methods, r->allowed_methods);
1961 /* start with the same set of output filters */
1963 /* while there are no input filters for a subrequest, we will
1964 * try to insert some, so if we don't have valid data, the code
1967 rnew->input_filters = r->input_filters;
1968 rnew->proto_input_filters = r->proto_input_filters;
1969 rnew->output_filters = next_filter;
1970 rnew->proto_output_filters = r->proto_output_filters;
1971 ap_add_output_filter_handle(ap_subreq_core_filter_handle,
1972 NULL, rnew, rnew->connection);
1975 /* If NULL - we are expecting to be internal_fast_redirect'ed
1976 * to this subrequest - or this request will never be invoked.
1977 * Ignore the original request filter stack entirely, and
1978 * drill the input and output stacks back to the connection.
1980 rnew->proto_input_filters = r->proto_input_filters;
1981 rnew->proto_output_filters = r->proto_output_filters;
1983 rnew->input_filters = r->proto_input_filters;
1984 rnew->output_filters = r->proto_output_filters;
1987 rnew->useragent_addr = r->useragent_addr;
1988 rnew->useragent_ip = r->useragent_ip;
1990 /* no input filters for a subrequest */
1992 ap_set_sub_req_protocol(rnew, r);
1994 /* We have to run this after we fill in sub req vars,
1995 * or the r->main pointer won't be setup
1997 ap_run_create_request(rnew);
1999 /* Begin by presuming any module can make its own path_info assumptions,
2000 * until some module interjects and changes the value.
2002 rnew->used_path_info = AP_REQ_DEFAULT_PATH_INFO;
2004 /* Pass on the kept body (if any) into the new request. */
2005 rnew->kept_body = r->kept_body;
2010 AP_CORE_DECLARE_NONSTD(apr_status_t) ap_sub_req_output_filter(ap_filter_t *f,
2011 apr_bucket_brigade *bb)
2013 apr_bucket *e = APR_BRIGADE_LAST(bb);
2015 if (APR_BUCKET_IS_EOS(e)) {
2016 apr_bucket_delete(e);
2019 if (!APR_BRIGADE_EMPTY(bb)) {
2020 return ap_pass_brigade(f->next, bb);
2026 extern APR_OPTIONAL_FN_TYPE(authz_some_auth_required) *ap__authz_ap_some_auth_required;
2028 AP_DECLARE(int) ap_some_auth_required(request_rec *r)
2030 /* Is there a require line configured for the type of *this* req? */
2031 if (ap__authz_ap_some_auth_required) {
2032 return ap__authz_ap_some_auth_required(r);
2038 AP_DECLARE(void) ap_clear_auth_internal(void)
2040 auth_internal_per_conf_hooks = 0;
2041 auth_internal_per_conf_providers = 0;
2044 AP_DECLARE(void) ap_setup_auth_internal(apr_pool_t *ptemp)
2046 int total_auth_hooks = 0;
2047 int total_auth_providers = 0;
2049 auth_internal_per_conf = 0;
2051 if (_hooks.link_access_checker) {
2052 total_auth_hooks += _hooks.link_access_checker->nelts;
2054 if (_hooks.link_access_checker_ex) {
2055 total_auth_hooks += _hooks.link_access_checker_ex->nelts;
2057 if (_hooks.link_check_user_id) {
2058 total_auth_hooks += _hooks.link_check_user_id->nelts;
2060 if (_hooks.link_auth_checker) {
2061 total_auth_hooks += _hooks.link_auth_checker->nelts;
2064 if (total_auth_hooks > auth_internal_per_conf_hooks) {
2068 total_auth_providers +=
2069 ap_list_provider_names(ptemp, AUTHN_PROVIDER_GROUP,
2070 AUTHN_PROVIDER_VERSION)->nelts;
2071 total_auth_providers +=
2072 ap_list_provider_names(ptemp, AUTHZ_PROVIDER_GROUP,
2073 AUTHZ_PROVIDER_VERSION)->nelts;
2075 if (total_auth_providers > auth_internal_per_conf_providers) {
2079 auth_internal_per_conf = 1;
2082 AP_DECLARE(apr_status_t) ap_register_auth_provider(apr_pool_t *pool,
2083 const char *provider_group,
2084 const char *provider_name,
2085 const char *provider_version,
2086 const void *provider,
2089 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2090 ++auth_internal_per_conf_providers;
2093 return ap_register_provider(pool, provider_group, provider_name,
2094 provider_version, provider);
2097 AP_DECLARE(void) ap_hook_check_access(ap_HOOK_access_checker_t *pf,
2098 const char * const *aszPre,
2099 const char * const *aszSucc,
2100 int nOrder, int type)
2102 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2103 ++auth_internal_per_conf_hooks;
2106 ap_hook_access_checker(pf, aszPre, aszSucc, nOrder);
2109 AP_DECLARE(void) ap_hook_check_access_ex(ap_HOOK_access_checker_ex_t *pf,
2110 const char * const *aszPre,
2111 const char * const *aszSucc,
2112 int nOrder, int type)
2114 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2115 ++auth_internal_per_conf_hooks;
2118 ap_hook_access_checker_ex(pf, aszPre, aszSucc, nOrder);
2121 AP_DECLARE(void) ap_hook_check_authn(ap_HOOK_check_user_id_t *pf,
2122 const char * const *aszPre,
2123 const char * const *aszSucc,
2124 int nOrder, int type)
2126 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2127 ++auth_internal_per_conf_hooks;
2130 ap_hook_check_user_id(pf, aszPre, aszSucc, nOrder);
2133 AP_DECLARE(void) ap_hook_check_authz(ap_HOOK_auth_checker_t *pf,
2134 const char * const *aszPre,
2135 const char * const *aszSucc,
2136 int nOrder, int type)
2138 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2139 ++auth_internal_per_conf_hooks;
2142 ap_hook_auth_checker(pf, aszPre, aszSucc, nOrder);
2145 AP_DECLARE(request_rec *) ap_sub_req_method_uri(const char *method,
2146 const char *new_uri,
2147 const request_rec *r,
2148 ap_filter_t *next_filter)
2151 /* Initialise res, to avoid a gcc warning */
2152 int res = HTTP_INTERNAL_SERVER_ERROR;
2155 rnew = make_sub_request(r, next_filter);
2157 /* would be nicer to pass "method" to ap_set_sub_req_protocol */
2158 rnew->method = method;
2159 rnew->method_number = ap_method_number_of(method);
2161 if (new_uri[0] == '/') {
2162 ap_parse_uri(rnew, new_uri);
2165 udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2166 udir = ap_escape_uri(rnew->pool, udir); /* re-escape it */
2167 ap_parse_uri(rnew, ap_make_full_path(rnew->pool, udir, new_uri));
2170 /* We cannot return NULL without violating the API. So just turn this
2171 * subrequest into a 500 to indicate the failure. */
2172 if (ap_is_recursion_limit_exceeded(r)) {
2173 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2178 * If the content can be served by the quick_handler, we can
2179 * safely bypass request_internal processing.
2181 * If next_filter is NULL we are expecting to be
2182 * internal_fast_redirect'ed to the subrequest, or the subrequest will
2183 * never be invoked. We need to make sure that the quickhandler is not
2184 * invoked by any lookups. Since an internal_fast_redirect will always
2185 * occur too late for the quickhandler to handle the request.
2188 res = ap_run_quick_handler(rnew, 1);
2191 if (next_filter == NULL || res != OK) {
2192 if ((res = ap_process_request_internal(rnew))) {
2200 AP_DECLARE(request_rec *) ap_sub_req_lookup_uri(const char *new_uri,
2201 const request_rec *r,
2202 ap_filter_t *next_filter)
2204 return ap_sub_req_method_uri("GET", new_uri, r, next_filter);
2207 AP_DECLARE(request_rec *) ap_sub_req_lookup_dirent(const apr_finfo_t *dirent,
2208 const request_rec *r,
2210 ap_filter_t *next_filter)
2217 rnew = make_sub_request(r, next_filter);
2219 /* Special case: we are looking at a relative lookup in the same directory.
2220 * This is 100% safe, since dirent->name just came from the filesystem.
2222 if (r->path_info && *r->path_info) {
2223 /* strip path_info off the end of the uri to keep it in sync
2224 * with r->filename, which has already been stripped by directory_walk,
2225 * merge the dirent->name, and then, if the caller wants us to remerge
2226 * the original path info, do so. Note we never fix the path_info back
2227 * to r->filename, since dir_walk would do so (but we don't expect it
2228 * to happen in the usual cases)
2230 udir = apr_pstrdup(rnew->pool, r->uri);
2231 udir[ap_find_path_info(udir, r->path_info)] = '\0';
2232 udir = ap_make_dirstr_parent(rnew->pool, udir);
2234 rnew->uri = ap_make_full_path(rnew->pool, udir, dirent->name);
2235 if (subtype == AP_SUBREQ_MERGE_ARGS) {
2236 rnew->uri = ap_make_full_path(rnew->pool, rnew->uri, r->path_info + 1);
2237 rnew->path_info = apr_pstrdup(rnew->pool, r->path_info);
2239 rnew->uri = ap_escape_uri(rnew->pool, rnew->uri);
2242 udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2243 rnew->uri = ap_escape_uri(rnew->pool, ap_make_full_path(rnew->pool,
2248 fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
2249 rnew->filename = ap_make_full_path(rnew->pool, fdir, dirent->name);
2250 if (r->canonical_filename == r->filename) {
2251 rnew->canonical_filename = rnew->filename;
2254 /* XXX This is now less relevant; we will do a full location walk
2255 * these days for this case. Preserve the apr_stat results, and
2256 * perhaps we also tag that symlinks were tested and/or found for
2259 rnew->per_dir_config = r->server->lookup_defaults;
2261 if ((dirent->valid & APR_FINFO_MIN) != APR_FINFO_MIN) {
2263 * apr_dir_read isn't very complete on this platform, so
2264 * we need another apr_stat (with or without APR_FINFO_LINK
2265 * depending on whether we allow all symlinks here.) If this
2266 * is an APR_LNK that resolves to an APR_DIR, then we will rerun
2267 * everything anyways... this should be safe.
2270 if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
2271 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2272 APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
2273 && (rv != APR_INCOMPLETE)) {
2274 rnew->finfo.filetype = APR_NOFILE;
2278 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2279 APR_FINFO_LINK | APR_FINFO_MIN,
2280 rnew->pool)) != APR_SUCCESS)
2281 && (rv != APR_INCOMPLETE)) {
2282 rnew->finfo.filetype = APR_NOFILE;
2287 memcpy(&rnew->finfo, dirent, sizeof(apr_finfo_t));
2290 if (rnew->finfo.filetype == APR_LNK) {
2292 * Resolve this symlink. We should tie this back to dir_walk's cache
2294 if ((res = resolve_symlink(rnew->filename, &rnew->finfo,
2295 ap_allow_options(rnew), rnew->pool))
2302 if (rnew->finfo.filetype == APR_DIR) {
2303 /* ap_make_full_path overallocated the buffers
2304 * by one character to help us out here.
2306 strcat(rnew->filename, "/");
2307 if (!rnew->path_info || !*rnew->path_info) {
2308 strcat(rnew->uri, "/");
2312 /* fill in parsed_uri values
2314 if (r->args && *r->args && (subtype == AP_SUBREQ_MERGE_ARGS)) {
2315 ap_parse_uri(rnew, apr_pstrcat(r->pool, rnew->uri, "?",
2319 ap_parse_uri(rnew, rnew->uri);
2322 /* We cannot return NULL without violating the API. So just turn this
2323 * subrequest into a 500. */
2324 if (ap_is_recursion_limit_exceeded(r)) {
2325 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2329 if ((res = ap_process_request_internal(rnew))) {
2336 AP_DECLARE(request_rec *) ap_sub_req_lookup_file(const char *new_file,
2337 const request_rec *r,
2338 ap_filter_t *next_filter)
2345 rnew = make_sub_request(r, next_filter);
2347 fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
2348 fdirlen = strlen(fdir);
2350 /* Translate r->filename, if it was canonical, it stays canonical
2352 if (r->canonical_filename == r->filename) {
2353 rnew->canonical_filename = (char*)(1);
2356 if (apr_filepath_merge(&rnew->filename, fdir, new_file,
2357 APR_FILEPATH_TRUENAME, rnew->pool) != APR_SUCCESS) {
2358 rnew->status = HTTP_FORBIDDEN;
2362 if (rnew->canonical_filename) {
2363 rnew->canonical_filename = rnew->filename;
2367 * Check for a special case... if there are no '/' characters in new_file
2368 * at all, and the path was the same, then we are looking at a relative
2369 * lookup in the same directory. Fixup the URI to match.
2372 if (strncmp(rnew->filename, fdir, fdirlen) == 0
2373 && rnew->filename[fdirlen]
2374 && ap_strchr_c(rnew->filename + fdirlen, '/') == NULL) {
2376 if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
2377 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2378 APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
2379 && (rv != APR_INCOMPLETE)) {
2380 rnew->finfo.filetype = APR_NOFILE;
2384 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2385 APR_FINFO_LINK | APR_FINFO_MIN,
2386 rnew->pool)) != APR_SUCCESS)
2387 && (rv != APR_INCOMPLETE)) {
2388 rnew->finfo.filetype = APR_NOFILE;
2392 if (r->uri && *r->uri) {
2393 char *udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2394 rnew->uri = ap_make_full_path(rnew->pool, udir,
2395 rnew->filename + fdirlen);
2396 ap_parse_uri(rnew, rnew->uri); /* fill in parsed_uri values */
2399 ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
2400 rnew->uri = apr_pstrdup(rnew->pool, "");
2404 /* XXX: @@@: What should be done with the parsed_uri values?
2405 * We would be better off stripping down to the 'common' elements
2406 * of the path, then reassembling the URI as best as we can.
2408 ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
2410 * XXX: this should be set properly like it is in the same-dir case
2411 * but it's actually sometimes to impossible to do it... because the
2412 * file may not have a uri associated with it -djg
2414 rnew->uri = apr_pstrdup(rnew->pool, "");
2417 /* We cannot return NULL without violating the API. So just turn this
2418 * subrequest into a 500. */
2419 if (ap_is_recursion_limit_exceeded(r)) {
2420 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2424 if ((res = ap_process_request_internal(rnew))) {
2431 AP_DECLARE(int) ap_run_sub_req(request_rec *r)
2433 int retval = DECLINED;
2434 /* Run the quick handler if the subrequest is not a dirent or file
2437 if (!(r->filename && r->finfo.filetype != APR_NOFILE)) {
2438 retval = ap_run_quick_handler(r, 0);
2441 retval = ap_invoke_handler(r);
2442 if (retval == DONE) {
2446 ap_finalize_sub_req_protocol(r);
2450 AP_DECLARE(void) ap_destroy_sub_req(request_rec *r)
2452 /* Reclaim the space */
2453 apr_pool_destroy(r->pool);
2457 * Function to set the r->mtime field to the specified value if it's later
2458 * than what's already there.
2460 AP_DECLARE(void) ap_update_mtime(request_rec *r, apr_time_t dependency_mtime)
2462 if (r->mtime < dependency_mtime) {
2463 r->mtime = dependency_mtime;
2468 * Is it the initial main request, which we only get *once* per HTTP request?
2470 AP_DECLARE(int) ap_is_initial_req(request_rec *r)
2472 return (r->main == NULL) /* otherwise, this is a sub-request */
2473 && (r->prev == NULL); /* otherwise, this is an internal redirect */