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)
127 char *olduser = r->user;
130 switch (ap_satisfies(r)) {
133 if ((access_status = ap_run_access_checker(r)) != OK) {
137 access_status = ap_run_access_checker_ex(r);
138 if (access_status == DECLINED) {
144 if ((access_status = ap_run_access_checker(r)) == OK) {
148 access_status = ap_run_access_checker_ex(r);
149 if (access_status == DECLINED) {
160 /* This is the master logic for processing requests. Do NOT duplicate
161 * this logic elsewhere, or the security model will be broken by future
162 * API changes. Each phase must be individually optimized to pick up
163 * redundant/duplicate calls by subrequests, and redirects.
165 AP_DECLARE(int) ap_process_request_internal(request_rec *r)
167 int file_req = (r->main && r->filename);
171 /* Ignore embedded %2F's in path for proxy requests */
172 if (!r->proxyreq && r->parsed_uri.path) {
173 d = ap_get_core_module_config(r->per_dir_config);
174 if (d->allow_encoded_slashes) {
175 access_status = ap_unescape_url_keep2f(r->parsed_uri.path, d->decode_encoded_slashes);
178 access_status = ap_unescape_url(r->parsed_uri.path);
181 if (access_status == HTTP_NOT_FOUND) {
182 if (! d->allow_encoded_slashes) {
183 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00026)
184 "found %%2f (encoded '/') in URI "
185 "(decoded='%s'), returning 404",
189 return access_status;
193 ap_getparents(r->uri); /* OK --- shrinking transformations... */
195 /* All file subrequests are a huge pain... they cannot bubble through the
196 * next several steps. Only file subrequests are allowed an empty uri,
197 * otherwise let translate_name kill the request.
200 if ((access_status = ap_location_walk(r))) {
201 return access_status;
203 if ((access_status = ap_if_walk(r))) {
204 return access_status;
207 d = ap_get_core_module_config(r->per_dir_config);
212 if ((access_status = ap_run_translate_name(r))) {
213 return decl_die(access_status, "translate", r);
217 /* Reset to the server default config prior to running map_to_storage
219 r->per_dir_config = r->server->lookup_defaults;
221 if ((access_status = ap_run_map_to_storage(r))) {
222 /* This request wasn't in storage (e.g. TRACE) */
223 return access_status;
226 /* Rerun the location walk, which overrides any map_to_storage config.
228 if ((access_status = ap_location_walk(r))) {
229 return access_status;
231 if ((access_status = ap_if_walk(r))) {
232 return access_status;
235 d = ap_get_core_module_config(r->per_dir_config);
240 if ((access_status = ap_run_post_perdir_config(r))) {
241 return access_status;
244 /* Only on the main request! */
245 if (r->main == NULL) {
246 if ((access_status = ap_run_header_parser(r))) {
247 return access_status;
251 /* Skip authn/authz if the parent or prior request passed the authn/authz,
252 * and that configuration didn't change (this requires optimized _walk()
253 * functions in map_to_storage that use the same merge results given
254 * identical input.) If the config changes, we must re-auth.
256 if (r->prev && (r->prev->per_dir_config == r->per_dir_config)) {
257 r->user = r->prev->user;
258 r->ap_auth_type = r->prev->ap_auth_type;
260 else if (r->main && (r->main->per_dir_config == r->per_dir_config)) {
261 r->user = r->main->user;
262 r->ap_auth_type = r->main->ap_auth_type;
265 /* A module using a confusing API (ap_get_basic_auth_pw) caused
266 ** r->user to be filled out prior to check_authn hook. We treat
267 ** it is inadvertent.
269 if (r->user && apr_table_get(r->notes, AP_GET_BASIC_AUTH_PW_NOTE)) {
273 switch (ap_satisfies(r)) {
276 if ((access_status = ap_run_access_checker(r)) != OK) {
277 return decl_die(access_status,
278 "check access (with Satisfy All)", r);
281 access_status = ap_run_access_checker_ex(r);
282 if (access_status == DECLINED
283 || (access_status == OK && ap_run_force_authn(r) == OK)) {
284 if ((access_status = ap_run_check_user_id(r)) != OK) {
285 return decl_die(access_status, "check user", r);
287 if (r->user == NULL) {
288 /* don't let buggy authn module crash us in authz */
289 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00027)
290 "No authentication done but request not "
291 "allowed without authentication for %s. "
292 "Authentication not configured?",
294 access_status = HTTP_INTERNAL_SERVER_ERROR;
295 return decl_die(access_status, "check user", r);
297 if ((access_status = ap_run_auth_checker(r)) != OK) {
298 return decl_die(access_status, "check authorization", r);
301 else if (access_status == OK) {
302 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
303 "request authorized without authentication by "
304 "access_checker_ex hook: %s", r->uri);
307 return decl_die(access_status, "check access", r);
311 if ((access_status = ap_run_access_checker(r)) == OK) {
312 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
313 "request authorized without authentication by "
314 "access_checker hook and 'Satisfy any': %s",
319 access_status = ap_run_access_checker_ex(r);
320 if (access_status == DECLINED
321 || (access_status == OK && ap_run_force_authn(r) == OK)) {
322 if ((access_status = ap_run_check_user_id(r)) != OK) {
323 return decl_die(access_status, "check user", r);
325 if (r->user == NULL) {
326 /* don't let buggy authn module crash us in authz */
327 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00028)
328 "No authentication done but request not "
329 "allowed without authentication for %s. "
330 "Authentication not configured?",
332 access_status = HTTP_INTERNAL_SERVER_ERROR;
333 return decl_die(access_status, "check user", r);
335 if ((access_status = ap_run_auth_checker(r)) != OK) {
336 return decl_die(access_status, "check authorization", r);
339 else if (access_status == OK) {
340 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
341 "request authorized without authentication by "
342 "access_checker_ex hook: %s", r->uri);
345 return decl_die(access_status, "check access", r);
350 /* XXX Must make certain the ap_run_type_checker short circuits mime
351 * in mod-proxy for r->proxyreq && r->parsed_uri.scheme
352 * && !strcmp(r->parsed_uri.scheme, "http")
354 if ((access_status = ap_run_type_checker(r)) != OK) {
355 return decl_die(access_status, "find types", r);
358 if ((access_status = ap_run_fixups(r)) != OK) {
359 ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "fixups hook gave %d: %s",
360 access_status, r->uri);
361 return access_status;
368 /* Useful caching structures to repeat _walk/merge sequences as required
369 * when a subrequest or redirect reuses substantially the same config.
371 * Directive order in the httpd.conf file and its Includes significantly
372 * impact this optimization. Grouping common blocks at the front of the
373 * config that are less likely to change between a request and
374 * its subrequests, or between a request and its redirects reduced
375 * the work of these functions significantly.
378 typedef struct walk_walked_t {
379 ap_conf_vector_t *matched; /* A dir_conf sections we matched */
380 ap_conf_vector_t *merged; /* The dir_conf merged result */
383 typedef struct walk_cache_t {
384 const char *cached; /* The identifier we matched */
385 ap_conf_vector_t **dir_conf_tested; /* The sections we matched against */
386 ap_conf_vector_t *dir_conf_merged; /* Base per_dir_config */
387 ap_conf_vector_t *per_dir_result; /* per_dir_config += walked result */
388 apr_array_header_t *walked; /* The list of walk_walked_t results */
389 struct walk_cache_t *prev; /* Prev cache of same call in this (sub)req */
390 int count; /* Number of prev invocations of same call in this (sub)req */
393 static walk_cache_t *prep_walk_cache(apr_size_t t, request_rec *r)
395 void **note, **inherit_note;
396 walk_cache_t *cache, *prev_cache, *copy_cache;
399 /* Find the most relevant, recent walk cache to work from and provide
400 * a copy the caller is allowed to munge. In the case of a sub-request
401 * or internal redirect, this is the cache corresponding to the equivalent
402 * invocation of the same function call in the "parent" request, if such
403 * a cache exists. Otherwise it is the walk cache of the previous
404 * invocation of the same function call in the current request, if
405 * that exists; if not, then create a new walk cache.
407 note = ap_get_request_note(r, t);
408 AP_DEBUG_ASSERT(note != NULL);
410 copy_cache = prev_cache = *note;
411 count = prev_cache ? (prev_cache->count + 1) : 0;
414 && (inherit_note = ap_get_request_note(r->prev, t))
417 && (inherit_note = ap_get_request_note(r->main, t))
419 walk_cache_t *inherit_cache = *inherit_note;
421 while (inherit_cache->count > count) {
422 inherit_cache = inherit_cache->prev;
424 if (inherit_cache->count == count) {
425 copy_cache = inherit_cache;
430 cache = apr_pmemdup(r->pool, copy_cache, sizeof(*cache));
431 cache->walked = apr_array_copy(r->pool, cache->walked);
432 cache->prev = prev_cache;
433 cache->count = count;
436 cache = apr_pcalloc(r->pool, sizeof(*cache));
437 cache->walked = apr_array_make(r->pool, 4, sizeof(walk_walked_t));
445 /*****************************************************************
447 * Getting and checking directory configuration. Also checks the
448 * FollowSymlinks and FollowSymOwner stuff, since this is really the
449 * only place that can happen (barring a new mid_dir_walk callout).
451 * We can't do it as an access_checker module function which gets
452 * called with the final per_dir_config, since we could have a directory
453 * with FollowSymLinks disabled, which contains a symlink to another
454 * with a .htaccess file which turns FollowSymLinks back on --- and
455 * access in such a case must be denied. So, whatever it is that
456 * checks FollowSymLinks needs to know the state of the options as
457 * they change, all the way down.
462 * resolve_symlink must _always_ be called on an APR_LNK file type!
463 * It will resolve the actual target file type, modification date, etc,
464 * and provide any processing required for symlink evaluation.
465 * Path must already be cleaned, no trailing slash, no multi-slashes,
466 * and don't call this on the root!
468 * Simply, the number of times we deref a symlink are minimal compared
469 * to the number of times we had an extra lstat() since we 'weren't sure'.
471 * To optimize, we stat() anything when given (opts & OPT_SYM_LINKS), otherwise
472 * we start off with an lstat(). Every lstat() must be dereferenced in case
473 * it points at a 'nasty' - we must always rerun check_safe_file (or similar.)
475 static int resolve_symlink(char *d, apr_finfo_t *lfi, int opts, apr_pool_t *p)
478 const char *savename;
480 if (!(opts & (OPT_SYM_OWNER | OPT_SYM_LINKS))) {
481 return HTTP_FORBIDDEN;
484 /* Save the name from the valid bits. */
485 savename = (lfi->valid & APR_FINFO_NAME) ? lfi->name : NULL;
487 /* if OPT_SYM_OWNER is unset, we only need to check target accessible */
488 if (!(opts & OPT_SYM_OWNER)) {
489 if (apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME | APR_FINFO_LINK), p)
492 return HTTP_FORBIDDEN;
495 /* Give back the target */
496 memcpy(lfi, &fi, sizeof(fi));
498 lfi->name = savename;
499 lfi->valid |= APR_FINFO_NAME;
505 /* OPT_SYM_OWNER only works if we can get the owner of
506 * both the file and symlink. First fill in a missing
507 * owner of the symlink, then get the info of the target.
509 if (!(lfi->valid & APR_FINFO_OWNER)) {
510 if (apr_stat(lfi, d, lfi->valid | APR_FINFO_LINK | APR_FINFO_OWNER, p)
513 return HTTP_FORBIDDEN;
517 if (apr_stat(&fi, d, lfi->valid & ~(APR_FINFO_NAME), p) != APR_SUCCESS) {
518 return HTTP_FORBIDDEN;
521 if (apr_uid_compare(fi.user, lfi->user) != APR_SUCCESS) {
522 return HTTP_FORBIDDEN;
525 /* Give back the target */
526 memcpy(lfi, &fi, sizeof(fi));
528 lfi->name = savename;
529 lfi->valid |= APR_FINFO_NAME;
537 * As we walk the directory configuration, the merged config won't
538 * be 'rooted' to a specific vhost until the very end of the merge.
540 * We need a very fast mini-merge to a real, vhost-rooted merge
541 * of core.opts and core.override, the only options tested within
542 * directory_walk itself.
544 * See core.c::merge_core_dir_configs() for explanation.
547 typedef struct core_opts_t {
548 allow_options_t opts;
550 allow_options_t remove;
551 overrides_t override;
552 overrides_t override_opts;
553 apr_table_t *override_list;
556 static void core_opts_merge(const ap_conf_vector_t *sec, core_opts_t *opts)
558 core_dir_config *this_dir = ap_get_core_module_config(sec);
564 if (this_dir->opts & OPT_UNSET) {
565 opts->add = (opts->add & ~this_dir->opts_remove)
566 | this_dir->opts_add;
567 opts->remove = (opts->remove & ~this_dir->opts_add)
568 | this_dir->opts_remove;
569 opts->opts = (opts->opts & ~opts->remove) | opts->add;
572 opts->opts = this_dir->opts;
573 opts->add = this_dir->opts_add;
574 opts->remove = this_dir->opts_remove;
577 if (!(this_dir->override & OR_UNSET)) {
578 opts->override = this_dir->override;
579 opts->override_opts = this_dir->override_opts;
582 if (this_dir->override_list != NULL) {
583 opts->override_list = this_dir->override_list;
588 /*****************************************************************
590 * Getting and checking directory configuration. Also checks the
591 * FollowSymlinks and FollowSymOwner stuff, since this is really the
592 * only place that can happen (barring a new mid_dir_walk callout).
594 * We can't do it as an access_checker module function which gets
595 * called with the final per_dir_config, since we could have a directory
596 * with FollowSymLinks disabled, which contains a symlink to another
597 * with a .htaccess file which turns FollowSymLinks back on --- and
598 * access in such a case must be denied. So, whatever it is that
599 * checks FollowSymLinks needs to know the state of the options as
600 * they change, all the way down.
603 AP_DECLARE(int) ap_directory_walk(request_rec *r)
605 ap_conf_vector_t *now_merged = NULL;
606 core_server_config *sconf =
607 ap_get_core_module_config(r->server->module_config);
608 ap_conf_vector_t **sec_ent = (ap_conf_vector_t **) sconf->sec_dir->elts;
609 int num_sec = sconf->sec_dir->nelts;
615 /* XXX: Better (faster) tests needed!!!
617 * "OK" as a response to a real problem is not _OK_, but to allow broken
618 * modules to proceed, we will permit the not-a-path filename to pass the
619 * following two tests. This behavior may be revoked in future versions
620 * of Apache. We still must catch it later if it's heading for the core
621 * handler. Leave INFO notes here for module debugging.
623 if (r->filename == NULL) {
624 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00029)
625 "Module bug? Request filename is missing for URI %s",
630 /* Canonicalize the file path without resolving filename case or aliases
631 * so we can begin by checking the cache for a recent directory walk.
632 * This call will ensure we have an absolute path in the same pass.
634 if ((rv = apr_filepath_merge(&entry_dir, NULL, r->filename,
635 APR_FILEPATH_NOTRELATIVE, r->pool))
637 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00030)
638 "Module bug? Request filename path %s is invalid or "
639 "or not absolute for uri %s",
640 r->filename, r->uri);
644 /* XXX Notice that this forces path_info to be canonical. That might
645 * not be desired by all apps. However, some of those same apps likely
646 * have significant security holes.
648 r->filename = entry_dir;
650 cache = prep_walk_cache(AP_NOTE_DIRECTORY_WALK, r);
651 cached = (cache->cached != NULL);
653 /* If this is not a dirent subrequest with a preconstructed
654 * r->finfo value, then we can simply stat the filename to
655 * save burning mega-cycles with unneeded stats - if this is
656 * an exact file match. We don't care about failure... we
657 * will stat by component failing this meager attempt.
659 * It would be nice to distinguish APR_ENOENT from other
660 * types of failure, such as APR_ENOTDIR. We can do something
661 * with APR_ENOENT, knowing that the path is good.
663 if (r->finfo.filetype == APR_NOFILE || r->finfo.filetype == APR_LNK) {
664 rv = ap_run_dirwalk_stat(&r->finfo, r, APR_FINFO_MIN);
666 /* some OSs will return APR_SUCCESS/APR_REG if we stat
667 * a regular file but we have '/' at the end of the name;
669 * other OSs will return APR_ENOTDIR for that situation;
671 * handle it the same everywhere by simulating a failure
672 * if it looks like a directory but really isn't
674 * Also reset if the stat failed, just for safety.
676 if ((rv != APR_SUCCESS) ||
677 (r->finfo.filetype != APR_NOFILE &&
678 (r->finfo.filetype != APR_DIR) &&
679 (r->filename[strlen(r->filename) - 1] == '/'))) {
680 r->finfo.filetype = APR_NOFILE; /* forget what we learned */
684 if (r->finfo.filetype == APR_REG) {
685 entry_dir = ap_make_dirstr_parent(r->pool, entry_dir);
687 else if (r->filename[strlen(r->filename) - 1] != '/') {
688 entry_dir = apr_pstrcat(r->pool, r->filename, "/", NULL);
691 /* If we have a file already matches the path of r->filename,
692 * and the vhost's list of directory sections hasn't changed,
693 * we can skip rewalking the directory_walk entries.
696 && ((r->finfo.filetype == APR_REG)
697 || ((r->finfo.filetype == APR_DIR)
698 && (!r->path_info || !*r->path_info)))
699 && (cache->dir_conf_tested == sec_ent)
700 && (strcmp(entry_dir, cache->cached) == 0)) {
703 /* Well this looks really familiar! If our end-result (per_dir_result)
704 * didn't change, we have absolutely nothing to do :)
705 * Otherwise (as is the case with most dir_merged/file_merged requests)
706 * we must merge our dir_conf_merged onto this new r->per_dir_config.
708 if (r->per_dir_config == cache->per_dir_result) {
712 if (r->per_dir_config == cache->dir_conf_merged) {
713 r->per_dir_config = cache->per_dir_result;
718 apr_finfo_t thisinfo;
720 allow_options_t opts;
721 core_dir_config *this_dir;
723 this_dir = ap_get_core_module_config(r->per_dir_config);
724 opts = this_dir->opts;
726 * If Symlinks are allowed in general we do not need the following
729 if (!(opts & OPT_SYM_LINKS)) {
730 rv = ap_run_dirwalk_stat(&thisinfo, r,
731 APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
733 * APR_INCOMPLETE is as fine as result as APR_SUCCESS as we
734 * have added APR_FINFO_NAME to the wanted parameter of
735 * apr_stat above. On Unix platforms this means that apr_stat
736 * is always going to return APR_INCOMPLETE in the case that
737 * the call to the native stat / lstat did not fail.
739 if ((rv != APR_INCOMPLETE) && (rv != APR_SUCCESS)) {
741 * This should never happen, because we did a stat on the
742 * same file, resolving a possible symlink several lines
743 * above. Therefore do not make a detailed analysis of rv
744 * in this case for the reason of the failure, just bail out
745 * with a HTTP_FORBIDDEN in case we hit a race condition
748 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00031)
749 "access to %s failed; stat of '%s' failed.",
750 r->uri, r->filename);
751 return r->status = HTTP_FORBIDDEN;
753 if (thisinfo.filetype == APR_LNK) {
754 /* Is this a possibly acceptable symlink? */
755 if ((res = resolve_symlink(r->filename, &thisinfo,
756 opts, r->pool)) != OK) {
757 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00032)
758 "Symbolic link not allowed "
759 "or link target not accessible: %s",
761 return r->status = res;
768 if (cache->walked->nelts) {
769 now_merged = ((walk_walked_t*)cache->walked->elts)
770 [cache->walked->nelts - 1].merged;
774 /* We start now_merged from NULL since we want to build
775 * a locations list that can be merged to any vhost.
778 int matches = cache->walked->nelts;
779 int cached_matches = matches;
780 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
781 core_dir_config *this_dir;
783 apr_finfo_t thisinfo;
784 char *save_path_info;
787 unsigned int seg, startseg;
788 apr_pool_t *rxpool = NULL;
790 /* Invariant: from the first time filename_len is set until
791 * it goes out of scope, filename_len==strlen(r->filename)
793 apr_size_t filename_len;
794 #ifdef CASE_BLIND_FILESYSTEM
795 apr_size_t canonical_len;
798 cached &= auth_internal_per_conf;
801 * We must play our own mini-merge game here, for the few
802 * running dir_config values we care about within dir_walk.
803 * We didn't start the merge from r->per_dir_config, so we
804 * accumulate opts and override as we merge, from the globals.
806 this_dir = ap_get_core_module_config(r->per_dir_config);
807 opts.opts = this_dir->opts;
808 opts.add = this_dir->opts_add;
809 opts.remove = this_dir->opts_remove;
810 opts.override = this_dir->override;
811 opts.override_opts = this_dir->override_opts;
812 opts.override_list = this_dir->override_list;
814 /* Set aside path_info to merge back onto path_info later.
815 * If r->filename is a directory, we must remerge the path_info,
816 * before we continue! [Directories cannot, by definition, have
817 * path info. Either the next segment is not-found, or a file.]
819 * r->path_info tracks the unconsumed source path.
820 * r->filename tracks the path as we process it
822 if ((r->finfo.filetype == APR_DIR) && r->path_info && *r->path_info)
824 if ((rv = apr_filepath_merge(&r->path_info, r->filename,
826 APR_FILEPATH_NOTABOVEROOT, r->pool))
828 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00033)
829 "dir_walk error, path_info %s is not relative "
830 "to the filename path %s for uri %s",
831 r->path_info, r->filename, r->uri);
832 return HTTP_INTERNAL_SERVER_ERROR;
835 save_path_info = NULL;
838 save_path_info = r->path_info;
839 r->path_info = r->filename;
842 #ifdef CASE_BLIND_FILESYSTEM
845 while (r->canonical_filename && r->canonical_filename[canonical_len]
846 && (r->canonical_filename[canonical_len]
847 == r->path_info[canonical_len])) {
852 && ((r->canonical_filename[canonical_len - 1] != '/'
853 && r->canonical_filename[canonical_len - 1])
854 || (r->path_info[canonical_len - 1] != '/'
855 && r->path_info[canonical_len - 1]))) {
860 * Now build r->filename component by component, starting
861 * with the root (on Unix, simply "/"). We will make a huge
862 * assumption here for efficiency, that any canonical path
863 * already given included a canonical root.
865 rv = apr_filepath_root((const char **)&r->filename,
866 (const char **)&r->path_info,
867 canonical_len ? 0 : APR_FILEPATH_TRUENAME,
869 filename_len = strlen(r->filename);
872 * Bad assumption above? If the root's length is longer
873 * than the canonical length, then it cannot be trusted as
874 * a truename. So try again, this time more seriously.
876 if ((rv == APR_SUCCESS) && canonical_len
877 && (filename_len > canonical_len)) {
878 rv = apr_filepath_root((const char **)&r->filename,
879 (const char **)&r->path_info,
880 APR_FILEPATH_TRUENAME, r->pool);
881 filename_len = strlen(r->filename);
885 #else /* ndef CASE_BLIND_FILESYSTEM, really this simple for Unix today; */
887 rv = apr_filepath_root((const char **)&r->filename,
888 (const char **)&r->path_info,
890 filename_len = strlen(r->filename);
894 if (rv != APR_SUCCESS) {
895 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00034)
896 "dir_walk error, could not determine the root "
897 "path of filename %s%s for uri %s",
898 r->filename, r->path_info, r->uri);
899 return HTTP_INTERNAL_SERVER_ERROR;
902 /* Working space for terminating null and an extra / is required.
904 buflen = filename_len + strlen(r->path_info) + 2;
905 buf = apr_palloc(r->pool, buflen);
906 memcpy(buf, r->filename, filename_len + 1);
908 thisinfo.valid = APR_FINFO_TYPE;
909 thisinfo.filetype = APR_DIR; /* It's the root, of course it's a dir */
912 * seg keeps track of which segment we've copied.
913 * sec_idx keeps track of which section we're on, since sections are
914 * ordered by number of segments. See core_reorder_directories
915 * startseg tells us how many segments describe the root path
916 * e.g. the complete path "//host/foo/" to a UNC share (4)
918 startseg = seg = ap_count_dirs(r->filename);
922 * Go down the directory hierarchy. Where we have to check for
923 * symlinks, do so. Where a .htaccess file has permission to
924 * override anything, try to find one.
932 /* We have no trailing slash, but we sure would appreciate one.
933 * However, we don't want to append a / our first time through.
935 if ((seg > startseg) && r->filename[filename_len-1] != '/') {
936 r->filename[filename_len++] = '/';
937 r->filename[filename_len] = 0;
941 /* Begin *this* level by looking for matching <Directory> sections
942 * from the server config.
944 for (; sec_idx < num_sec; ++sec_idx) {
946 ap_conf_vector_t *entry_config = sec_ent[sec_idx];
947 core_dir_config *entry_core;
948 entry_core = ap_get_core_module_config(entry_config);
950 /* No more possible matches for this many segments?
951 * We are done when we find relative/regex/longer components.
953 if (entry_core->r || entry_core->d_components > seg) {
957 /* We will never skip '0' element components, e.g. plain old
958 * <Directory >, and <Directory "/"> are classified as zero
959 * so that Win32/Netware/OS2 etc all pick them up.
960 * Otherwise, skip over the mismatches.
962 if (entry_core->d_components
963 && ((entry_core->d_components < seg)
964 || (entry_core->d_is_fnmatch
965 ? (apr_fnmatch(entry_core->d, r->filename,
966 APR_FNM_PATHNAME) != APR_SUCCESS)
967 : (strcmp(r->filename, entry_core->d) != 0)))) {
971 /* If we haven't continue'd above, we have a match.
973 * Calculate our full-context core opts & override.
975 core_opts_merge(sec_ent[sec_idx], &opts);
977 /* If we merged this same section last time, reuse it
980 if (last_walk->matched == sec_ent[sec_idx]) {
981 now_merged = last_walk->merged;
987 /* We fell out of sync. This is our own copy of walked,
988 * so truncate the remaining matches and reset remaining.
990 cache->walked->nelts -= matches;
996 now_merged = ap_merge_per_dir_configs(r->pool,
1001 now_merged = sec_ent[sec_idx];
1004 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1005 last_walk->matched = sec_ent[sec_idx];
1006 last_walk->merged = now_merged;
1009 /* If .htaccess files are enabled, check for one, provided we
1010 * have reached a real path.
1012 do { /* Not really a loop, just a break'able code block */
1014 ap_conf_vector_t *htaccess_conf = NULL;
1016 /* No htaccess in an incomplete root path,
1017 * nor if it's disabled
1019 if (seg < startseg || (!opts.override
1020 && apr_is_empty_table(opts.override_list)
1026 res = ap_parse_htaccess(&htaccess_conf, r, opts.override,
1027 opts.override_opts, opts.override_list,
1028 r->filename, sconf->access_name);
1033 if (!htaccess_conf) {
1037 /* If we are still here, we found our htaccess.
1039 * Calculate our full-context core opts & override.
1041 core_opts_merge(htaccess_conf, &opts);
1043 /* If we merged this same htaccess last time, reuse it...
1044 * this wouldn't work except that we cache the htaccess
1045 * sections for the lifetime of the request, so we match
1046 * the same conf. Good planning (no, pure luck ;)
1049 if (last_walk->matched == htaccess_conf) {
1050 now_merged = last_walk->merged;
1056 /* We fell out of sync. This is our own copy of walked,
1057 * so truncate the remaining matches and reset
1060 cache->walked->nelts -= matches;
1066 now_merged = ap_merge_per_dir_configs(r->pool,
1071 now_merged = htaccess_conf;
1074 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1075 last_walk->matched = htaccess_conf;
1076 last_walk->merged = now_merged;
1078 } while (0); /* Only one htaccess, not a real loop */
1080 /* That temporary trailing slash was useful, now drop it.
1083 r->filename[--filename_len] = '\0';
1086 /* Time for all good things to come to an end?
1088 if (!r->path_info || !*r->path_info) {
1092 /* Now it's time for the next segment...
1093 * We will assume the next element is an end node, and fix it up
1094 * below as necessary...
1097 seg_name = r->filename + filename_len;
1098 delim = strchr(r->path_info + (*r->path_info == '/' ? 1 : 0), '/');
1100 apr_size_t path_info_len = delim - r->path_info;
1102 memcpy(seg_name, r->path_info, path_info_len + 1);
1103 filename_len += path_info_len;
1104 r->path_info = delim;
1108 apr_size_t path_info_len = strlen(r->path_info);
1109 memcpy(seg_name, r->path_info, path_info_len + 1);
1110 filename_len += path_info_len;
1111 r->path_info += path_info_len;
1113 if (*seg_name == '/')
1116 /* If nothing remained but a '/' string, we are finished
1117 * XXX: NO WE ARE NOT!!! Now process this puppy!!! */
1122 /* First optimization;
1123 * If...we knew r->filename was a file, and
1124 * if...we have strict (case-sensitive) filenames, or
1125 * we know the canonical_filename matches to _this_ name, and
1126 * if...we have allowed symlinks
1127 * skip the lstat and dummy up an APR_DIR value for thisinfo.
1129 if (r->finfo.filetype != APR_NOFILE
1130 #ifdef CASE_BLIND_FILESYSTEM
1131 && (filename_len <= canonical_len)
1133 && ((opts.opts & (OPT_SYM_OWNER | OPT_SYM_LINKS)) == OPT_SYM_LINKS))
1136 thisinfo.filetype = APR_DIR;
1141 /* We choose apr_stat with flag APR_FINFO_LINK here, rather that
1142 * plain apr_stat, so that we capture this path object rather than
1143 * its target. We will replace the info with our target's info
1144 * below. We especially want the name of this 'link' object, not
1145 * the name of its target, if we are fixing the filename
1146 * case/resolving aliases.
1148 rv = ap_run_dirwalk_stat(&thisinfo, r,
1149 APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
1151 if (APR_STATUS_IS_ENOENT(rv)) {
1152 /* Nothing? That could be nice. But our directory
1155 thisinfo.filetype = APR_NOFILE;
1158 else if (APR_STATUS_IS_EACCES(rv)) {
1159 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00035)
1160 "access to %s denied (filesystem path '%s') "
1161 "because search permissions are missing on a "
1162 "component of the path", r->uri, r->filename);
1163 return r->status = HTTP_FORBIDDEN;
1165 else if ((rv != APR_SUCCESS && rv != APR_INCOMPLETE)
1166 || !(thisinfo.valid & APR_FINFO_TYPE)) {
1167 /* If we hit ENOTDIR, we must have over-optimized, deny
1168 * rather than assume not found.
1170 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00036)
1171 "access to %s failed (filesystem path '%s')",
1172 r->uri, r->filename);
1173 return r->status = HTTP_FORBIDDEN;
1176 /* Fix up the path now if we have a name, and they don't agree
1178 if ((thisinfo.valid & APR_FINFO_NAME)
1179 && strcmp(seg_name, thisinfo.name)) {
1180 /* TODO: provide users an option that an internal/external
1181 * redirect is required here? We need to walk the URI and
1182 * filename in tandem to properly correlate these.
1184 strcpy(seg_name, thisinfo.name);
1185 filename_len = strlen(r->filename);
1188 if (thisinfo.filetype == APR_LNK) {
1189 /* Is this a possibly acceptable symlink?
1191 if ((res = resolve_symlink(r->filename, &thisinfo,
1192 opts.opts, r->pool)) != OK) {
1193 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00037)
1194 "Symbolic link not allowed "
1195 "or link target not accessible: %s",
1197 return r->status = res;
1201 /* Ok, we are done with the link's info, test the real target
1203 if (thisinfo.filetype == APR_REG ||
1204 thisinfo.filetype == APR_NOFILE) {
1205 /* That was fun, nothing left for us here
1209 else if (thisinfo.filetype != APR_DIR) {
1210 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00038)
1211 "Forbidden: %s doesn't point to "
1212 "a file or directory",
1214 return r->status = HTTP_FORBIDDEN;
1218 } while (thisinfo.filetype == APR_DIR);
1220 /* If we have _not_ optimized, this is the time to recover
1221 * the final stat result.
1223 if (r->finfo.filetype == APR_NOFILE || r->finfo.filetype == APR_LNK) {
1224 r->finfo = thisinfo;
1227 /* Now splice the saved path_info back onto any new path_info
1229 if (save_path_info) {
1230 if (r->path_info && *r->path_info) {
1231 r->path_info = ap_make_full_path(r->pool, r->path_info,
1235 r->path_info = save_path_info;
1240 * Now we'll deal with the regexes, note we pick up sec_idx
1241 * where we left off (we gave up after we hit entry_core->r)
1243 for (; sec_idx < num_sec; ++sec_idx) {
1247 ap_regmatch_t *pmatch = NULL;
1249 core_dir_config *entry_core;
1250 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1252 if (!entry_core->r) {
1256 if (entry_core->refs && entry_core->refs->nelts) {
1258 apr_pool_create(&rxpool, r->pool);
1260 nmatch = entry_core->refs->nelts;
1261 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1264 if (ap_regexec(entry_core->r, r->filename, nmatch, pmatch, 0)) {
1268 for (i = 0; i < nmatch; i++) {
1269 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1270 ((const char **)entry_core->refs->elts)[i]) {
1271 apr_table_setn(r->subprocess_env,
1272 ((const char **)entry_core->refs->elts)[i],
1273 apr_pstrndup(r->pool,
1274 r->filename + pmatch[i].rm_so,
1275 pmatch[i].rm_eo - pmatch[i].rm_so));
1279 /* If we haven't already continue'd above, we have a match.
1281 * Calculate our full-context core opts & override.
1283 core_opts_merge(sec_ent[sec_idx], &opts);
1285 /* If we merged this same section last time, reuse it
1288 if (last_walk->matched == sec_ent[sec_idx]) {
1289 now_merged = last_walk->merged;
1295 /* We fell out of sync. This is our own copy of walked,
1296 * so truncate the remaining matches and reset remaining.
1298 cache->walked->nelts -= matches;
1304 now_merged = ap_merge_per_dir_configs(r->pool,
1309 now_merged = sec_ent[sec_idx];
1312 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1313 last_walk->matched = sec_ent[sec_idx];
1314 last_walk->merged = now_merged;
1318 apr_pool_destroy(rxpool);
1321 /* Whoops - everything matched in sequence, but either the original
1322 * walk found some additional matches (which we need to truncate), or
1323 * this walk found some additional matches.
1326 cache->walked->nelts -= matches;
1329 else if (cache->walked->nelts > cached_matches) {
1334 /* It seems this shouldn't be needed anymore. We translated the
1335 x symlink above into a real resource, and should have died up there.
1336 x Even if we keep this, it needs more thought (maybe an r->file_is_symlink)
1337 x perhaps it should actually happen in file_walk, so we catch more
1338 x obscure cases in autoindex subrequests, etc.
1340 x * Symlink permissions are determined by the parent. If the request is
1341 x * for a directory then applying the symlink test here would use the
1342 x * permissions of the directory as opposed to its parent. Consider a
1343 x * symlink pointing to a dir with a .htaccess disallowing symlinks. If
1344 x * you access /symlink (or /symlink/) you would get a 403 without this
1345 x * APR_DIR test. But if you accessed /symlink/index.html, for example,
1346 x * you would *not* get the 403.
1348 x if (r->finfo.filetype != APR_DIR
1349 x && (res = resolve_symlink(r->filename, r->info, ap_allow_options(r),
1351 x ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
1352 x "Symbolic link not allowed: %s", r->filename);
1357 /* Save future sub-requestors much angst in processing
1358 * this subrequest. If dir_walk couldn't canonicalize
1359 * the file path, nothing can.
1361 r->canonical_filename = r->filename;
1363 if (r->finfo.filetype == APR_DIR) {
1364 cache->cached = r->filename;
1367 cache->cached = ap_make_dirstr_parent(r->pool, r->filename);
1371 && r->per_dir_config == cache->dir_conf_merged) {
1372 r->per_dir_config = cache->per_dir_result;
1376 cache->dir_conf_tested = sec_ent;
1377 cache->dir_conf_merged = r->per_dir_config;
1379 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1380 * and note the end result to (potentially) skip this step next time.
1383 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1387 cache->per_dir_result = r->per_dir_config;
1393 AP_DECLARE(int) ap_location_walk(request_rec *r)
1395 ap_conf_vector_t *now_merged = NULL;
1396 core_server_config *sconf =
1397 ap_get_core_module_config(r->server->module_config);
1398 ap_conf_vector_t **sec_ent = (ap_conf_vector_t **)sconf->sec_url->elts;
1399 int num_sec = sconf->sec_url->nelts;
1400 walk_cache_t *cache;
1401 const char *entry_uri;
1404 /* No tricks here, there are no <Locations > to parse in this vhost.
1405 * We won't destroy the cache, just in case _this_ redirect is later
1406 * redirected again to a vhost with <Location > blocks to optimize.
1412 cache = prep_walk_cache(AP_NOTE_LOCATION_WALK, r);
1413 cached = (cache->cached != NULL);
1415 /* Location and LocationMatch differ on their behaviour w.r.t. multiple
1416 * slashes. Location matches multiple slashes with a single slash,
1417 * LocationMatch doesn't. An exception, for backwards brokenness is
1418 * absoluteURIs... in which case neither match multiple slashes.
1420 if (r->uri[0] != '/') {
1424 char *uri = apr_pstrdup(r->pool, r->uri);
1429 /* If we have an cache->cached location that matches r->uri,
1430 * and the vhost's list of locations hasn't changed, we can skip
1431 * rewalking the location_walk entries.
1434 && (cache->dir_conf_tested == sec_ent)
1435 && (strcmp(entry_uri, cache->cached) == 0)) {
1436 /* Well this looks really familiar! If our end-result (per_dir_result)
1437 * didn't change, we have absolutely nothing to do :)
1438 * Otherwise (as is the case with most dir_merged/file_merged requests)
1439 * we must merge our dir_conf_merged onto this new r->per_dir_config.
1441 if (r->per_dir_config == cache->per_dir_result) {
1445 if (cache->walked->nelts) {
1446 now_merged = ((walk_walked_t*)cache->walked->elts)
1447 [cache->walked->nelts - 1].merged;
1451 /* We start now_merged from NULL since we want to build
1452 * a locations list that can be merged to any vhost.
1455 int matches = cache->walked->nelts;
1456 int cached_matches = matches;
1457 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1458 apr_pool_t *rxpool = NULL;
1460 cached &= auth_internal_per_conf;
1461 cache->cached = entry_uri;
1463 /* Go through the location entries, and check for matches.
1464 * We apply the directive sections in given order, we should
1465 * really try them with the most general first.
1467 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1469 core_dir_config *entry_core;
1470 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1472 /* ### const strlen can be optimized in location config parsing */
1473 len = strlen(entry_core->d);
1475 /* Test the regex, fnmatch or string as appropriate.
1476 * If it's a strcmp, and the <Location > pattern was
1477 * not slash terminated, then this uri must be slash
1478 * terminated (or at the end of the string) to match.
1480 if (entry_core->r) {
1484 ap_regmatch_t *pmatch = NULL;
1486 if (entry_core->refs && entry_core->refs->nelts) {
1488 apr_pool_create(&rxpool, r->pool);
1490 nmatch = entry_core->refs->nelts;
1491 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1494 if (ap_regexec(entry_core->r, r->uri, nmatch, pmatch, 0)) {
1498 for (i = 0; i < nmatch; i++) {
1499 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1500 ((const char **)entry_core->refs->elts)[i]) {
1501 apr_table_setn(r->subprocess_env,
1502 ((const char **)entry_core->refs->elts)[i],
1503 apr_pstrndup(r->pool,
1504 r->uri + pmatch[i].rm_so,
1505 pmatch[i].rm_eo - pmatch[i].rm_so));
1512 if ((entry_core->d_is_fnmatch
1513 ? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1514 : (strncmp(entry_core->d, cache->cached, len)
1516 && entry_core->d[len - 1] != '/'
1517 && cache->cached[len] != '/'
1518 && cache->cached[len] != '\0')))) {
1524 /* If we merged this same section last time, reuse it
1527 if (last_walk->matched == sec_ent[sec_idx]) {
1528 now_merged = last_walk->merged;
1534 /* We fell out of sync. This is our own copy of walked,
1535 * so truncate the remaining matches and reset remaining.
1537 cache->walked->nelts -= matches;
1543 now_merged = ap_merge_per_dir_configs(r->pool,
1548 now_merged = sec_ent[sec_idx];
1551 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1552 last_walk->matched = sec_ent[sec_idx];
1553 last_walk->merged = now_merged;
1557 apr_pool_destroy(rxpool);
1560 /* Whoops - everything matched in sequence, but either the original
1561 * walk found some additional matches (which we need to truncate), or
1562 * this walk found some additional matches.
1565 cache->walked->nelts -= matches;
1568 else if (cache->walked->nelts > cached_matches) {
1574 && r->per_dir_config == cache->dir_conf_merged) {
1575 r->per_dir_config = cache->per_dir_result;
1579 cache->dir_conf_tested = sec_ent;
1580 cache->dir_conf_merged = r->per_dir_config;
1582 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1583 * and note the end result to (potentially) skip this step next time.
1586 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1590 cache->per_dir_result = r->per_dir_config;
1595 AP_DECLARE(int) ap_file_walk(request_rec *r)
1597 ap_conf_vector_t *now_merged = NULL;
1598 core_dir_config *dconf = ap_get_core_module_config(r->per_dir_config);
1599 ap_conf_vector_t **sec_ent = NULL;
1601 walk_cache_t *cache;
1602 const char *test_file;
1605 if (dconf->sec_file) {
1606 sec_ent = (ap_conf_vector_t **)dconf->sec_file->elts;
1607 num_sec = dconf->sec_file->nelts;
1610 /* To allow broken modules to proceed, we allow missing filenames to pass.
1611 * We will catch it later if it's heading for the core handler.
1612 * directory_walk already posted an INFO note for module debugging.
1614 if (r->filename == NULL) {
1618 /* No tricks here, there are just no <Files > to parse in this context.
1619 * We won't destroy the cache, just in case _this_ redirect is later
1620 * redirected again to a context containing the same or similar <Files >.
1626 cache = prep_walk_cache(AP_NOTE_FILE_WALK, r);
1627 cached = (cache->cached != NULL);
1629 /* Get the basename .. and copy for the cache just
1630 * in case r->filename is munged by another module
1632 test_file = strrchr(r->filename, '/');
1633 if (test_file == NULL) {
1634 test_file = apr_pstrdup(r->pool, r->filename);
1637 test_file = apr_pstrdup(r->pool, ++test_file);
1640 /* If we have an cache->cached file name that matches test_file,
1641 * and the directory's list of file sections hasn't changed, we
1642 * can skip rewalking the file_walk entries.
1645 && (cache->dir_conf_tested == sec_ent)
1646 && (strcmp(test_file, cache->cached) == 0)) {
1647 /* Well this looks really familiar! If our end-result (per_dir_result)
1648 * didn't change, we have absolutely nothing to do :)
1649 * Otherwise (as is the case with most dir_merged requests)
1650 * we must merge our dir_conf_merged onto this new r->per_dir_config.
1652 if (r->per_dir_config == cache->per_dir_result) {
1656 if (cache->walked->nelts) {
1657 now_merged = ((walk_walked_t*)cache->walked->elts)
1658 [cache->walked->nelts - 1].merged;
1662 /* We start now_merged from NULL since we want to build
1663 * a file section list that can be merged to any dir_walk.
1666 int matches = cache->walked->nelts;
1667 int cached_matches = matches;
1668 walk_walked_t *last_walk = (walk_walked_t*)cache->walked->elts;
1669 apr_pool_t *rxpool = NULL;
1671 cached &= auth_internal_per_conf;
1672 cache->cached = test_file;
1674 /* Go through the location entries, and check for matches.
1675 * We apply the directive sections in given order, we should
1676 * really try them with the most general first.
1678 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1679 core_dir_config *entry_core;
1680 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1682 if (entry_core->r) {
1686 ap_regmatch_t *pmatch = NULL;
1688 if (entry_core->refs && entry_core->refs->nelts) {
1690 apr_pool_create(&rxpool, r->pool);
1692 nmatch = entry_core->refs->nelts;
1693 pmatch = apr_palloc(rxpool, nmatch*sizeof(ap_regmatch_t));
1696 if (ap_regexec(entry_core->r, cache->cached, nmatch, pmatch, 0)) {
1700 for (i = 0; i < nmatch; i++) {
1701 if (pmatch[i].rm_so >= 0 && pmatch[i].rm_eo >= 0 &&
1702 ((const char **)entry_core->refs->elts)[i]) {
1703 apr_table_setn(r->subprocess_env,
1704 ((const char **)entry_core->refs->elts)[i],
1705 apr_pstrndup(r->pool,
1706 cache->cached + pmatch[i].rm_so,
1707 pmatch[i].rm_eo - pmatch[i].rm_so));
1713 if ((entry_core->d_is_fnmatch
1714 ? apr_fnmatch(entry_core->d, cache->cached, APR_FNM_PATHNAME)
1715 : strcmp(entry_core->d, cache->cached))) {
1720 /* If we merged this same section last time, reuse it
1723 if (last_walk->matched == sec_ent[sec_idx]) {
1724 now_merged = last_walk->merged;
1730 /* We fell out of sync. This is our own copy of walked,
1731 * so truncate the remaining matches and reset remaining.
1733 cache->walked->nelts -= matches;
1739 now_merged = ap_merge_per_dir_configs(r->pool,
1744 now_merged = sec_ent[sec_idx];
1747 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1748 last_walk->matched = sec_ent[sec_idx];
1749 last_walk->merged = now_merged;
1753 apr_pool_destroy(rxpool);
1756 /* Whoops - everything matched in sequence, but either the original
1757 * walk found some additional matches (which we need to truncate), or
1758 * this walk found some additional matches.
1761 cache->walked->nelts -= matches;
1764 else if (cache->walked->nelts > cached_matches) {
1770 && r->per_dir_config == cache->dir_conf_merged) {
1771 r->per_dir_config = cache->per_dir_result;
1775 cache->dir_conf_tested = sec_ent;
1776 cache->dir_conf_merged = r->per_dir_config;
1778 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1779 * and note the end result to (potentially) skip this step next time.
1782 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1786 cache->per_dir_result = r->per_dir_config;
1791 static int ap_if_walk_sub(request_rec *r, core_dir_config* dconf)
1793 ap_conf_vector_t *now_merged = NULL;
1794 ap_conf_vector_t **sec_ent = NULL;
1796 walk_cache_t *cache;
1801 int prev_result = -1;
1802 walk_walked_t *last_walk;
1804 if (dconf && dconf->sec_if) {
1805 sec_ent = (ap_conf_vector_t **)dconf->sec_if->elts;
1806 num_sec = dconf->sec_if->nelts;
1809 /* No tricks here, there are just no <If > to parse in this context.
1810 * We won't destroy the cache, just in case _this_ redirect is later
1811 * redirected again to a context containing the same or similar <If >.
1817 cache = prep_walk_cache(AP_NOTE_IF_WALK, r);
1818 cached = (cache->cached != NULL);
1819 cache->cached = (void *)1;
1820 matches = cache->walked->nelts;
1821 cached_matches = matches;
1822 last_walk = (walk_walked_t*)cache->walked->elts;
1824 cached &= auth_internal_per_conf;
1826 /* Go through the if entries, and check for matches */
1827 for (sec_idx = 0; sec_idx < num_sec; ++sec_idx) {
1828 const char *err = NULL;
1829 core_dir_config *entry_core;
1831 entry_core = ap_get_core_module_config(sec_ent[sec_idx]);
1833 AP_DEBUG_ASSERT(entry_core->condition_ifelse != 0);
1834 if (entry_core->condition_ifelse & AP_CONDITION_ELSE) {
1835 AP_DEBUG_ASSERT(prev_result != -1);
1836 if (prev_result == 1)
1840 if (entry_core->condition_ifelse & AP_CONDITION_IF) {
1841 rc = ap_expr_exec(r, entry_core->condition, &err);
1844 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00039)
1845 "Failed to evaluate <If > condition: %s",
1856 /* If we merged this same section last time, reuse it
1859 if (last_walk->matched == sec_ent[sec_idx]) {
1860 now_merged = last_walk->merged;
1866 /* We fell out of sync. This is our own copy of walked,
1867 * so truncate the remaining matches and reset remaining.
1869 cache->walked->nelts -= matches;
1875 now_merged = ap_merge_per_dir_configs(r->pool,
1880 now_merged = sec_ent[sec_idx];
1883 last_walk = (walk_walked_t*)apr_array_push(cache->walked);
1884 last_walk->matched = sec_ent[sec_idx];
1885 last_walk->merged = now_merged;
1888 /* Everything matched in sequence, but it may be that the original
1889 * walk found some additional matches (which we need to truncate), or
1890 * this walk found some additional matches.
1893 cache->walked->nelts -= matches;
1896 else if (cache->walked->nelts > cached_matches) {
1901 && r->per_dir_config == cache->dir_conf_merged) {
1902 r->per_dir_config = cache->per_dir_result;
1906 cache->dir_conf_tested = sec_ent;
1907 cache->dir_conf_merged = r->per_dir_config;
1909 /* Merge our cache->dir_conf_merged construct with the r->per_dir_configs,
1910 * and note the end result to (potentially) skip this step next time.
1913 r->per_dir_config = ap_merge_per_dir_configs(r->pool,
1917 cache->per_dir_result = r->per_dir_config;
1920 core_dir_config *dconf_merged = ap_get_core_module_config(now_merged);
1922 /* Allow nested <If>s and their configs to get merged
1923 * with the current one.
1925 return ap_if_walk_sub(r, dconf_merged);
1931 AP_DECLARE(int) ap_if_walk(request_rec *r)
1933 core_dir_config *dconf = ap_get_core_module_config(r->per_dir_config);
1934 int status = ap_if_walk_sub(r, dconf);
1938 /*****************************************************************
1940 * The sub_request mechanism.
1942 * Fns to look up a relative URI from, e.g., a map file or SSI document.
1943 * These do all access checks, etc., but don't actually run the transaction
1944 * ... use run_sub_req below for that. Also, be sure to use destroy_sub_req
1945 * as appropriate if you're likely to be creating more than a few of these.
1946 * (An early Apache version didn't destroy the sub_reqs used in directory
1947 * indexing. The result, when indexing a directory with 800-odd files in
1948 * it, was massively excessive storage allocation).
1950 * Note more manipulation of protocol-specific vars in the request
1954 static request_rec *make_sub_request(const request_rec *r,
1955 ap_filter_t *next_filter)
1960 apr_pool_create(&rrp, r->pool);
1961 apr_pool_tag(rrp, "subrequest");
1962 rnew = apr_pcalloc(rrp, sizeof(request_rec));
1965 rnew->hostname = r->hostname;
1966 rnew->request_time = r->request_time;
1967 rnew->connection = r->connection;
1968 rnew->server = r->server;
1971 rnew->request_config = ap_create_request_config(rnew->pool);
1973 /* Start a clean config from this subrequest's vhost. Optimization in
1974 * Location/File/Dir walks from the parent request assure that if the
1975 * config blocks of the subrequest match the parent request, no merges
1976 * will actually occur (and generally a minimal number of merges are
1977 * required, even if the parent and subrequest aren't quite identical.)
1979 rnew->per_dir_config = r->server->lookup_defaults;
1981 rnew->htaccess = r->htaccess;
1982 rnew->allowed_methods = ap_make_method_list(rnew->pool, 2);
1984 /* make a copy of the allowed-methods list */
1985 ap_copy_method_list(rnew->allowed_methods, r->allowed_methods);
1987 /* start with the same set of output filters */
1989 ap_filter_t *scan = next_filter;
1991 /* while there are no input filters for a subrequest, we will
1992 * try to insert some, so if we don't have valid data, the code
1995 rnew->input_filters = r->input_filters;
1996 rnew->proto_input_filters = r->proto_input_filters;
1997 rnew->output_filters = next_filter;
1998 rnew->proto_output_filters = r->proto_output_filters;
1999 while (scan && (scan != r->proto_output_filters)) {
2000 if (scan->frec == ap_subreq_core_filter_handle) {
2005 if (!scan || scan == r->proto_output_filters) {
2006 ap_add_output_filter_handle(ap_subreq_core_filter_handle,
2007 NULL, rnew, rnew->connection);
2011 /* If NULL - we are expecting to be internal_fast_redirect'ed
2012 * to this subrequest - or this request will never be invoked.
2013 * Ignore the original request filter stack entirely, and
2014 * drill the input and output stacks back to the connection.
2016 rnew->proto_input_filters = r->proto_input_filters;
2017 rnew->proto_output_filters = r->proto_output_filters;
2019 rnew->input_filters = r->proto_input_filters;
2020 rnew->output_filters = r->proto_output_filters;
2023 rnew->useragent_addr = r->useragent_addr;
2024 rnew->useragent_ip = r->useragent_ip;
2026 /* no input filters for a subrequest */
2028 ap_set_sub_req_protocol(rnew, r);
2030 /* We have to run this after we fill in sub req vars,
2031 * or the r->main pointer won't be setup
2033 ap_run_create_request(rnew);
2035 /* Begin by presuming any module can make its own path_info assumptions,
2036 * until some module interjects and changes the value.
2038 rnew->used_path_info = AP_REQ_DEFAULT_PATH_INFO;
2040 /* Pass on the kept body (if any) into the new request. */
2041 rnew->kept_body = r->kept_body;
2046 AP_CORE_DECLARE_NONSTD(apr_status_t) ap_sub_req_output_filter(ap_filter_t *f,
2047 apr_bucket_brigade *bb)
2049 apr_bucket *e = APR_BRIGADE_LAST(bb);
2051 if (APR_BUCKET_IS_EOS(e)) {
2052 apr_bucket_delete(e);
2055 if (!APR_BRIGADE_EMPTY(bb)) {
2056 return ap_pass_brigade(f->next, bb);
2062 extern APR_OPTIONAL_FN_TYPE(authz_some_auth_required) *ap__authz_ap_some_auth_required;
2064 AP_DECLARE(int) ap_some_auth_required(request_rec *r)
2066 /* Is there a require line configured for the type of *this* req? */
2067 if (ap__authz_ap_some_auth_required) {
2068 return ap__authz_ap_some_auth_required(r);
2074 AP_DECLARE(void) ap_clear_auth_internal(void)
2076 auth_internal_per_conf_hooks = 0;
2077 auth_internal_per_conf_providers = 0;
2080 AP_DECLARE(void) ap_setup_auth_internal(apr_pool_t *ptemp)
2082 int total_auth_hooks = 0;
2083 int total_auth_providers = 0;
2085 auth_internal_per_conf = 0;
2087 if (_hooks.link_access_checker) {
2088 total_auth_hooks += _hooks.link_access_checker->nelts;
2090 if (_hooks.link_access_checker_ex) {
2091 total_auth_hooks += _hooks.link_access_checker_ex->nelts;
2093 if (_hooks.link_check_user_id) {
2094 total_auth_hooks += _hooks.link_check_user_id->nelts;
2096 if (_hooks.link_auth_checker) {
2097 total_auth_hooks += _hooks.link_auth_checker->nelts;
2100 if (total_auth_hooks > auth_internal_per_conf_hooks) {
2104 total_auth_providers +=
2105 ap_list_provider_names(ptemp, AUTHN_PROVIDER_GROUP,
2106 AUTHN_PROVIDER_VERSION)->nelts;
2107 total_auth_providers +=
2108 ap_list_provider_names(ptemp, AUTHZ_PROVIDER_GROUP,
2109 AUTHZ_PROVIDER_VERSION)->nelts;
2111 if (total_auth_providers > auth_internal_per_conf_providers) {
2115 auth_internal_per_conf = 1;
2118 AP_DECLARE(apr_status_t) ap_register_auth_provider(apr_pool_t *pool,
2119 const char *provider_group,
2120 const char *provider_name,
2121 const char *provider_version,
2122 const void *provider,
2125 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2126 ++auth_internal_per_conf_providers;
2129 return ap_register_provider(pool, provider_group, provider_name,
2130 provider_version, provider);
2133 AP_DECLARE(void) ap_hook_check_access(ap_HOOK_access_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_access_checker(pf, aszPre, aszSucc, nOrder);
2145 AP_DECLARE(void) ap_hook_check_access_ex(ap_HOOK_access_checker_ex_t *pf,
2146 const char * const *aszPre,
2147 const char * const *aszSucc,
2148 int nOrder, int type)
2150 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2151 ++auth_internal_per_conf_hooks;
2154 ap_hook_access_checker_ex(pf, aszPre, aszSucc, nOrder);
2157 AP_DECLARE(void) ap_hook_check_authn(ap_HOOK_check_user_id_t *pf,
2158 const char * const *aszPre,
2159 const char * const *aszSucc,
2160 int nOrder, int type)
2162 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2163 ++auth_internal_per_conf_hooks;
2166 ap_hook_check_user_id(pf, aszPre, aszSucc, nOrder);
2169 AP_DECLARE(void) ap_hook_check_authz(ap_HOOK_auth_checker_t *pf,
2170 const char * const *aszPre,
2171 const char * const *aszSucc,
2172 int nOrder, int type)
2174 if ((type & AP_AUTH_INTERNAL_MASK) == AP_AUTH_INTERNAL_PER_CONF) {
2175 ++auth_internal_per_conf_hooks;
2178 ap_hook_auth_checker(pf, aszPre, aszSucc, nOrder);
2181 AP_DECLARE(request_rec *) ap_sub_req_method_uri(const char *method,
2182 const char *new_uri,
2183 const request_rec *r,
2184 ap_filter_t *next_filter)
2187 /* Initialise res, to avoid a gcc warning */
2188 int res = HTTP_INTERNAL_SERVER_ERROR;
2191 rnew = make_sub_request(r, next_filter);
2193 /* would be nicer to pass "method" to ap_set_sub_req_protocol */
2194 rnew->method = method;
2195 rnew->method_number = ap_method_number_of(method);
2197 if (new_uri[0] == '/') {
2198 ap_parse_uri(rnew, new_uri);
2201 udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2202 udir = ap_escape_uri(rnew->pool, udir); /* re-escape it */
2203 ap_parse_uri(rnew, ap_make_full_path(rnew->pool, udir, new_uri));
2206 /* We cannot return NULL without violating the API. So just turn this
2207 * subrequest into a 500 to indicate the failure. */
2208 if (ap_is_recursion_limit_exceeded(r)) {
2209 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2214 * If the content can be served by the quick_handler, we can
2215 * safely bypass request_internal processing.
2217 * If next_filter is NULL we are expecting to be
2218 * internal_fast_redirect'ed to the subrequest, or the subrequest will
2219 * never be invoked. We need to make sure that the quickhandler is not
2220 * invoked by any lookups. Since an internal_fast_redirect will always
2221 * occur too late for the quickhandler to handle the request.
2224 res = ap_run_quick_handler(rnew, 1);
2227 if (next_filter == NULL || res != OK) {
2228 if ((res = ap_process_request_internal(rnew))) {
2236 AP_DECLARE(request_rec *) ap_sub_req_lookup_uri(const char *new_uri,
2237 const request_rec *r,
2238 ap_filter_t *next_filter)
2240 return ap_sub_req_method_uri("GET", new_uri, r, next_filter);
2243 AP_DECLARE(request_rec *) ap_sub_req_lookup_dirent(const apr_finfo_t *dirent,
2244 const request_rec *r,
2246 ap_filter_t *next_filter)
2253 rnew = make_sub_request(r, next_filter);
2255 /* Special case: we are looking at a relative lookup in the same directory.
2256 * This is 100% safe, since dirent->name just came from the filesystem.
2258 if (r->path_info && *r->path_info) {
2259 /* strip path_info off the end of the uri to keep it in sync
2260 * with r->filename, which has already been stripped by directory_walk,
2261 * merge the dirent->name, and then, if the caller wants us to remerge
2262 * the original path info, do so. Note we never fix the path_info back
2263 * to r->filename, since dir_walk would do so (but we don't expect it
2264 * to happen in the usual cases)
2266 udir = apr_pstrdup(rnew->pool, r->uri);
2267 udir[ap_find_path_info(udir, r->path_info)] = '\0';
2268 udir = ap_make_dirstr_parent(rnew->pool, udir);
2270 rnew->uri = ap_make_full_path(rnew->pool, udir, dirent->name);
2271 if (subtype == AP_SUBREQ_MERGE_ARGS) {
2272 rnew->uri = ap_make_full_path(rnew->pool, rnew->uri, r->path_info + 1);
2273 rnew->path_info = apr_pstrdup(rnew->pool, r->path_info);
2275 rnew->uri = ap_escape_uri(rnew->pool, rnew->uri);
2278 udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2279 rnew->uri = ap_escape_uri(rnew->pool, ap_make_full_path(rnew->pool,
2284 fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
2285 rnew->filename = ap_make_full_path(rnew->pool, fdir, dirent->name);
2286 if (r->canonical_filename == r->filename) {
2287 rnew->canonical_filename = rnew->filename;
2290 /* XXX This is now less relevant; we will do a full location walk
2291 * these days for this case. Preserve the apr_stat results, and
2292 * perhaps we also tag that symlinks were tested and/or found for
2295 rnew->per_dir_config = r->server->lookup_defaults;
2297 if ((dirent->valid & APR_FINFO_MIN) != APR_FINFO_MIN) {
2299 * apr_dir_read isn't very complete on this platform, so
2300 * we need another apr_stat (with or without APR_FINFO_LINK
2301 * depending on whether we allow all symlinks here.) If this
2302 * is an APR_LNK that resolves to an APR_DIR, then we will rerun
2303 * everything anyways... this should be safe.
2306 if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
2307 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2308 APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
2309 && (rv != APR_INCOMPLETE)) {
2310 rnew->finfo.filetype = APR_NOFILE;
2314 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2315 APR_FINFO_LINK | APR_FINFO_MIN,
2316 rnew->pool)) != APR_SUCCESS)
2317 && (rv != APR_INCOMPLETE)) {
2318 rnew->finfo.filetype = APR_NOFILE;
2323 memcpy(&rnew->finfo, dirent, sizeof(apr_finfo_t));
2326 if (rnew->finfo.filetype == APR_LNK) {
2328 * Resolve this symlink. We should tie this back to dir_walk's cache
2330 if ((res = resolve_symlink(rnew->filename, &rnew->finfo,
2331 ap_allow_options(rnew), rnew->pool))
2338 if (rnew->finfo.filetype == APR_DIR) {
2339 /* ap_make_full_path overallocated the buffers
2340 * by one character to help us out here.
2342 strcat(rnew->filename, "/");
2343 if (!rnew->path_info || !*rnew->path_info) {
2344 strcat(rnew->uri, "/");
2348 /* fill in parsed_uri values
2350 if (r->args && *r->args && (subtype == AP_SUBREQ_MERGE_ARGS)) {
2351 ap_parse_uri(rnew, apr_pstrcat(r->pool, rnew->uri, "?",
2355 ap_parse_uri(rnew, rnew->uri);
2358 /* We cannot return NULL without violating the API. So just turn this
2359 * subrequest into a 500. */
2360 if (ap_is_recursion_limit_exceeded(r)) {
2361 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2365 if ((res = ap_process_request_internal(rnew))) {
2372 AP_DECLARE(request_rec *) ap_sub_req_lookup_file(const char *new_file,
2373 const request_rec *r,
2374 ap_filter_t *next_filter)
2381 rnew = make_sub_request(r, next_filter);
2383 fdir = ap_make_dirstr_parent(rnew->pool, r->filename);
2384 fdirlen = strlen(fdir);
2386 /* Translate r->filename, if it was canonical, it stays canonical
2388 if (r->canonical_filename == r->filename) {
2389 rnew->canonical_filename = (char*)(1);
2392 if (apr_filepath_merge(&rnew->filename, fdir, new_file,
2393 APR_FILEPATH_TRUENAME, rnew->pool) != APR_SUCCESS) {
2394 rnew->status = HTTP_FORBIDDEN;
2398 if (rnew->canonical_filename) {
2399 rnew->canonical_filename = rnew->filename;
2403 * Check for a special case... if there are no '/' characters in new_file
2404 * at all, and the path was the same, then we are looking at a relative
2405 * lookup in the same directory. Fixup the URI to match.
2408 if (strncmp(rnew->filename, fdir, fdirlen) == 0
2409 && rnew->filename[fdirlen]
2410 && ap_strchr_c(rnew->filename + fdirlen, '/') == NULL) {
2412 if (ap_allow_options(rnew) & OPT_SYM_LINKS) {
2413 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2414 APR_FINFO_MIN, rnew->pool)) != APR_SUCCESS)
2415 && (rv != APR_INCOMPLETE)) {
2416 rnew->finfo.filetype = APR_NOFILE;
2420 if (((rv = apr_stat(&rnew->finfo, rnew->filename,
2421 APR_FINFO_LINK | APR_FINFO_MIN,
2422 rnew->pool)) != APR_SUCCESS)
2423 && (rv != APR_INCOMPLETE)) {
2424 rnew->finfo.filetype = APR_NOFILE;
2428 if (r->uri && *r->uri) {
2429 char *udir = ap_make_dirstr_parent(rnew->pool, r->uri);
2430 rnew->uri = ap_make_full_path(rnew->pool, udir,
2431 rnew->filename + fdirlen);
2432 ap_parse_uri(rnew, rnew->uri); /* fill in parsed_uri values */
2435 ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
2436 rnew->uri = apr_pstrdup(rnew->pool, "");
2440 /* XXX: @@@: What should be done with the parsed_uri values?
2441 * We would be better off stripping down to the 'common' elements
2442 * of the path, then reassembling the URI as best as we can.
2444 ap_parse_uri(rnew, new_file); /* fill in parsed_uri values */
2446 * XXX: this should be set properly like it is in the same-dir case
2447 * but it's actually sometimes to impossible to do it... because the
2448 * file may not have a uri associated with it -djg
2450 rnew->uri = apr_pstrdup(rnew->pool, "");
2453 /* We cannot return NULL without violating the API. So just turn this
2454 * subrequest into a 500. */
2455 if (ap_is_recursion_limit_exceeded(r)) {
2456 rnew->status = HTTP_INTERNAL_SERVER_ERROR;
2460 if ((res = ap_process_request_internal(rnew))) {
2467 AP_DECLARE(int) ap_run_sub_req(request_rec *r)
2469 int retval = DECLINED;
2470 /* Run the quick handler if the subrequest is not a dirent or file
2473 if (!(r->filename && r->finfo.filetype != APR_NOFILE)) {
2474 retval = ap_run_quick_handler(r, 0);
2477 retval = ap_invoke_handler(r);
2478 if (retval == DONE) {
2482 ap_finalize_sub_req_protocol(r);
2486 AP_DECLARE(void) ap_destroy_sub_req(request_rec *r)
2488 /* Reclaim the space */
2489 apr_pool_destroy(r->pool);
2493 * Function to set the r->mtime field to the specified value if it's later
2494 * than what's already there.
2496 AP_DECLARE(void) ap_update_mtime(request_rec *r, apr_time_t dependency_mtime)
2498 if (r->mtime < dependency_mtime) {
2499 r->mtime = dependency_mtime;
2504 * Is it the initial main request, which we only get *once* per HTTP request?
2506 AP_DECLARE(int) ap_is_initial_req(request_rec *r)
2508 return (r->main == NULL) /* otherwise, this is a sub-request */
2509 && (r->prev == NULL); /* otherwise, this is an internal redirect */