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.
18 #include "apr_strings.h"
20 #include "apr_fnmatch.h"
22 #include "apr_thread_proc.h" /* for RLIMIT stuff */
23 #include "apr_random.h"
25 #define APR_WANT_IOVEC
26 #define APR_WANT_STRFUNC
27 #define APR_WANT_MEMFUNC
30 #include "ap_config.h"
32 #include "http_config.h"
33 #include "http_core.h"
34 #include "http_protocol.h" /* For index_of_response(). Grump. */
35 #include "http_request.h"
36 #include "http_vhost.h"
37 #include "http_main.h" /* For the default_handler below... */
40 #include "http_connection.h"
41 #include "apr_buckets.h"
42 #include "util_filter.h"
43 #include "util_ebcdic.h"
44 #include "util_mutex.h"
45 #include "util_time.h"
46 #include "mpm_common.h"
47 #include "scoreboard.h"
49 #include "mod_proxy.h"
50 #include "ap_listen.h"
52 #include "mod_so.h" /* for ap_find_loaded_module_symbol */
54 #if defined(RLIMIT_CPU) || defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS) || defined (RLIMIT_NPROC)
61 /* LimitRequestBody handling */
62 #define AP_LIMIT_REQ_BODY_UNSET ((apr_off_t) -1)
63 #define AP_DEFAULT_LIMIT_REQ_BODY ((apr_off_t) 0)
65 /* LimitXMLRequestBody handling */
66 #define AP_LIMIT_UNSET ((long) -1)
67 #define AP_DEFAULT_LIMIT_XML_BODY ((apr_size_t)1000000)
69 #define AP_MIN_SENDFILE_BYTES (256)
71 /* maximum include nesting level */
72 #ifndef AP_MAX_INCLUDE_DEPTH
73 #define AP_MAX_INCLUDE_DEPTH (128)
76 /* valid in core-conf, but not in runtime r->used_path_info */
77 #define AP_ACCEPT_PATHINFO_UNSET 3
79 #define AP_CONTENT_MD5_OFF 0
80 #define AP_CONTENT_MD5_ON 1
81 #define AP_CONTENT_MD5_UNSET 2
84 APR_HOOK_LINK(get_mgmt_items)
85 APR_HOOK_LINK(insert_network_bucket)
88 AP_IMPLEMENT_HOOK_RUN_ALL(int, get_mgmt_items,
89 (apr_pool_t *p, const char *val, apr_hash_t *ht),
90 (p, val, ht), OK, DECLINED)
92 AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t, insert_network_bucket,
93 (conn_rec *c, apr_bucket_brigade *bb,
94 apr_socket_t *socket),
95 (c, bb, socket), AP_DECLINED)
97 /* Server core module... This module provides support for really basic
98 * server operations, including options and commands which control the
99 * operation of other modules. Consider this the bureaucracy module.
101 * The core module also defines handlers, etc., to handle just enough
102 * to allow a server with the core module ONLY to actually serve documents.
104 * This file could almost be mod_core.c, except for the stuff which affects
105 * the http_conf_globals.
108 /* we know core's module_index is 0 */
109 #undef APLOG_MODULE_INDEX
110 #define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
112 /* Handles for core filters */
113 AP_DECLARE_DATA ap_filter_rec_t *ap_subreq_core_filter_handle;
114 AP_DECLARE_DATA ap_filter_rec_t *ap_core_output_filter_handle;
115 AP_DECLARE_DATA ap_filter_rec_t *ap_content_length_filter_handle;
116 AP_DECLARE_DATA ap_filter_rec_t *ap_core_input_filter_handle;
118 /* Provide ap_document_root_check storage and default value = true */
119 AP_DECLARE_DATA int ap_document_root_check = 1;
121 /* magic pointer for ErrorDocument xxx "default" */
122 static char errordocument_default;
124 static apr_array_header_t *saved_server_config_defines = NULL;
125 static apr_table_t *server_config_defined_vars = NULL;
127 AP_DECLARE_DATA int ap_main_state = AP_SQ_MS_INITIAL_STARTUP;
128 AP_DECLARE_DATA int ap_run_mode = AP_SQ_RM_UNKNOWN;
129 AP_DECLARE_DATA int ap_config_generation = 0;
131 static void *create_core_dir_config(apr_pool_t *a, char *dir)
133 core_dir_config *conf;
135 conf = (core_dir_config *)apr_pcalloc(a, sizeof(core_dir_config));
137 /* conf->r and conf->d[_*] are initialized by dirsection() or left NULL */
139 conf->opts = dir ? OPT_UNSET : OPT_UNSET|OPT_SYM_LINKS;
140 conf->opts_add = conf->opts_remove = OPT_NONE;
141 conf->override = OR_UNSET|OR_NONE;
142 conf->override_opts = OPT_UNSET | OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
144 conf->content_md5 = AP_CONTENT_MD5_UNSET;
145 conf->accept_path_info = AP_ACCEPT_PATHINFO_UNSET;
147 conf->use_canonical_name = USE_CANONICAL_NAME_UNSET;
148 conf->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_UNSET;
150 conf->hostname_lookups = HOSTNAME_LOOKUP_UNSET;
153 * left as NULL (we use apr_pcalloc):
154 * conf->limit_cpu = NULL;
155 * conf->limit_mem = NULL;
156 * conf->limit_nproc = NULL;
157 * conf->sec_file = NULL;
158 * conf->sec_if = NULL;
161 conf->limit_req_body = AP_LIMIT_REQ_BODY_UNSET;
162 conf->limit_xml_body = AP_LIMIT_UNSET;
164 conf->server_signature = srv_sig_unset;
166 conf->add_default_charset = ADD_DEFAULT_CHARSET_UNSET;
167 conf->add_default_charset_name = DEFAULT_ADD_DEFAULT_CHARSET_NAME;
169 /* Overriding all negotiation
170 * Set NULL by apr_pcalloc:
171 * conf->mime_type = NULL;
172 * conf->handler = NULL;
173 * conf->output_filters = NULL;
174 * conf->input_filters = NULL;
178 * Flag for use of inodes in ETags.
180 conf->etag_bits = ETAG_UNSET;
181 conf->etag_add = ETAG_UNSET;
182 conf->etag_remove = ETAG_UNSET;
184 conf->enable_mmap = ENABLE_MMAP_UNSET;
185 conf->enable_sendfile = ENABLE_SENDFILE_UNSET;
186 conf->allow_encoded_slashes = 0;
187 conf->decode_encoded_slashes = 0;
189 conf->max_ranges = AP_MAXRANGES_UNSET;
190 conf->max_overlaps = AP_MAXRANGES_UNSET;
191 conf->max_reversals = AP_MAXRANGES_UNSET;
196 static void *merge_core_dir_configs(apr_pool_t *a, void *basev, void *newv)
198 core_dir_config *base = (core_dir_config *)basev;
199 core_dir_config *new = (core_dir_config *)newv;
200 core_dir_config *conf;
203 /* Create this conf by duplicating the base, replacing elements
204 * (or creating copies for merging) where new-> values exist.
206 conf = (core_dir_config *)apr_pmemdup(a, base, sizeof(core_dir_config));
209 conf->d_is_fnmatch = new->d_is_fnmatch;
210 conf->d_components = new->d_components;
212 conf->condition = new->condition;
214 if (new->opts & OPT_UNSET) {
215 /* there was no explicit setting of new->opts, so we merge
216 * preserve the invariant (opts_add & opts_remove) == 0
218 conf->opts_add = (conf->opts_add & ~new->opts_remove) | new->opts_add;
219 conf->opts_remove = (conf->opts_remove & ~new->opts_add)
221 conf->opts = (conf->opts & ~conf->opts_remove) | conf->opts_add;
223 /* If Includes was enabled with exec in the base config, but
224 * was enabled without exec in the new config, then disable
225 * exec in the merged set. */
226 if (((base->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
227 == (OPT_INCLUDES|OPT_INC_WITH_EXEC))
228 && ((new->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
230 conf->opts &= ~OPT_INC_WITH_EXEC;
234 /* otherwise we just copy, because an explicit opts setting
235 * overrides all earlier +/- modifiers
237 conf->opts = new->opts;
238 conf->opts_add = new->opts_add;
239 conf->opts_remove = new->opts_remove;
242 if (!(new->override & OR_UNSET)) {
243 conf->override = new->override;
246 if (!(new->override_opts & OPT_UNSET)) {
247 conf->override_opts = new->override_opts;
250 if (new->override_list != NULL) {
251 conf->override_list = new->override_list;
254 if (conf->response_code_strings == NULL) {
255 conf->response_code_strings = new->response_code_strings;
257 else if (new->response_code_strings != NULL) {
258 /* If we merge, the merge-result must have its own array
260 conf->response_code_strings = apr_pmemdup(a,
261 base->response_code_strings,
262 sizeof(*conf->response_code_strings) * RESPONSE_CODES);
264 for (i = 0; i < RESPONSE_CODES; ++i) {
265 if (new->response_code_strings[i] != NULL) {
266 conf->response_code_strings[i] = new->response_code_strings[i];
270 /* Otherwise we simply use the base->response_code_strings array
273 if (new->hostname_lookups != HOSTNAME_LOOKUP_UNSET) {
274 conf->hostname_lookups = new->hostname_lookups;
277 if (new->content_md5 != AP_CONTENT_MD5_UNSET) {
278 conf->content_md5 = new->content_md5;
281 if (new->accept_path_info != AP_ACCEPT_PATHINFO_UNSET) {
282 conf->accept_path_info = new->accept_path_info;
285 if (new->use_canonical_name != USE_CANONICAL_NAME_UNSET) {
286 conf->use_canonical_name = new->use_canonical_name;
289 if (new->use_canonical_phys_port != USE_CANONICAL_PHYS_PORT_UNSET) {
290 conf->use_canonical_phys_port = new->use_canonical_phys_port;
294 if (new->limit_cpu) {
295 conf->limit_cpu = new->limit_cpu;
299 #if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
300 if (new->limit_mem) {
301 conf->limit_mem = new->limit_mem;
306 if (new->limit_nproc) {
307 conf->limit_nproc = new->limit_nproc;
311 if (new->limit_req_body != AP_LIMIT_REQ_BODY_UNSET) {
312 conf->limit_req_body = new->limit_req_body;
315 if (new->limit_xml_body != AP_LIMIT_UNSET)
316 conf->limit_xml_body = new->limit_xml_body;
318 if (!conf->sec_file) {
319 conf->sec_file = new->sec_file;
321 else if (new->sec_file) {
322 /* If we merge, the merge-result must have its own array
324 conf->sec_file = apr_array_append(a, base->sec_file, new->sec_file);
326 /* Otherwise we simply use the base->sec_file array
330 conf->sec_if = new->sec_if;
332 else if (new->sec_if) {
333 /* If we merge, the merge-result must have its own array
335 conf->sec_if = apr_array_append(a, base->sec_if, new->sec_if);
337 /* Otherwise we simply use the base->sec_if array
340 if (new->server_signature != srv_sig_unset) {
341 conf->server_signature = new->server_signature;
344 if (new->add_default_charset != ADD_DEFAULT_CHARSET_UNSET) {
345 conf->add_default_charset = new->add_default_charset;
346 conf->add_default_charset_name = new->add_default_charset_name;
349 /* Overriding all negotiation
351 if (new->mime_type) {
352 conf->mime_type = new->mime_type;
356 conf->handler = new->handler;
359 if (new->output_filters) {
360 conf->output_filters = new->output_filters;
363 if (new->input_filters) {
364 conf->input_filters = new->input_filters;
368 * Now merge the setting of the FileETag directive.
370 if (new->etag_bits == ETAG_UNSET) {
372 (conf->etag_add & (~ new->etag_remove)) | new->etag_add;
374 (conf->etag_remove & (~ new->etag_add)) | new->etag_remove;
376 (conf->etag_bits & (~ conf->etag_remove)) | conf->etag_add;
379 conf->etag_bits = new->etag_bits;
380 conf->etag_add = new->etag_add;
381 conf->etag_remove = new->etag_remove;
384 if (conf->etag_bits != ETAG_NONE) {
385 conf->etag_bits &= (~ ETAG_NONE);
388 if (new->enable_mmap != ENABLE_MMAP_UNSET) {
389 conf->enable_mmap = new->enable_mmap;
392 if (new->enable_sendfile != ENABLE_SENDFILE_UNSET) {
393 conf->enable_sendfile = new->enable_sendfile;
396 conf->allow_encoded_slashes = new->allow_encoded_slashes;
397 conf->decode_encoded_slashes = new->decode_encoded_slashes;
401 conf->log = new->log;
404 conf->log = ap_new_log_config(a, new->log);
405 ap_merge_log_config(base->log, conf->log);
409 conf->max_ranges = new->max_ranges != AP_MAXRANGES_UNSET ? new->max_ranges : base->max_ranges;
410 conf->max_overlaps = new->max_overlaps != AP_MAXRANGES_UNSET ? new->max_overlaps : base->max_overlaps;
411 conf->max_reversals = new->max_reversals != AP_MAXRANGES_UNSET ? new->max_reversals : base->max_reversals;
416 #if APR_HAS_SO_ACCEPTFILTER
417 #ifndef ACCEPT_FILTER_NAME
418 #define ACCEPT_FILTER_NAME "httpready"
419 #ifdef __FreeBSD_version
420 #if __FreeBSD_version < 411000 /* httpready broken before 4.1.1 */
421 #undef ACCEPT_FILTER_NAME
422 #define ACCEPT_FILTER_NAME "dataready"
428 static void *create_core_server_config(apr_pool_t *a, server_rec *s)
430 core_server_config *conf;
431 int is_virtual = s->is_virtual;
433 conf = (core_server_config *)apr_pcalloc(a, sizeof(core_server_config));
435 /* global-default / global-only settings */
438 conf->ap_document_root = DOCUMENT_LOCATION;
439 conf->access_name = DEFAULT_ACCESS_FNAME;
441 /* A mapping only makes sense in the global context */
442 conf->accf_map = apr_table_make(a, 5);
443 #if APR_HAS_SO_ACCEPTFILTER
444 apr_table_setn(conf->accf_map, "http", ACCEPT_FILTER_NAME);
445 apr_table_setn(conf->accf_map, "https", "dataready");
447 apr_table_setn(conf->accf_map, "http", "data");
448 apr_table_setn(conf->accf_map, "https", "data");
451 /* pcalloc'ed - we have NULL's/0's
452 else ** is_virtual ** {
453 conf->ap_document_root = NULL;
454 conf->access_name = NULL;
455 conf->accf_map = NULL;
459 /* initialization, no special case for global context */
461 conf->sec_dir = apr_array_make(a, 40, sizeof(ap_conf_vector_t *));
462 conf->sec_url = apr_array_make(a, 40, sizeof(ap_conf_vector_t *));
464 /* pcalloc'ed - we have NULL's/0's
465 conf->gprof_dir = NULL;
467 ** recursion stopper; 0 == unset
468 conf->redirect_limit = 0;
469 conf->subreq_limit = 0;
471 conf->protocol = NULL;
474 conf->trace_enable = AP_TRACE_UNSET;
479 static void *merge_core_server_configs(apr_pool_t *p, void *basev, void *virtv)
481 core_server_config *base = (core_server_config *)basev;
482 core_server_config *virt = (core_server_config *)virtv;
483 core_server_config *conf = (core_server_config *)
484 apr_pmemdup(p, base, sizeof(core_server_config));
486 if (virt->ap_document_root)
487 conf->ap_document_root = virt->ap_document_root;
489 if (virt->access_name)
490 conf->access_name = virt->access_name;
492 /* XXX optimize to keep base->sec_ pointers if virt->sec_ array is empty */
493 conf->sec_dir = apr_array_append(p, base->sec_dir, virt->sec_dir);
494 conf->sec_url = apr_array_append(p, base->sec_url, virt->sec_url);
496 if (virt->redirect_limit)
497 conf->redirect_limit = virt->redirect_limit;
499 if (virt->subreq_limit)
500 conf->subreq_limit = virt->subreq_limit;
502 if (virt->trace_enable != AP_TRACE_UNSET)
503 conf->trace_enable = virt->trace_enable;
505 if (virt->min_http_version != AP_HTTP_VERSION_UNSET) {
506 conf->min_http_version = virt->min_http_version;
507 conf->max_http_version = virt->max_http_version;
510 /* no action for virt->accf_map, not allowed per-vhost */
513 conf->protocol = virt->protocol;
516 conf->gprof_dir = virt->gprof_dir;
518 if (virt->error_log_format)
519 conf->error_log_format = virt->error_log_format;
521 if (virt->error_log_conn)
522 conf->error_log_conn = virt->error_log_conn;
524 if (virt->error_log_req)
525 conf->error_log_req = virt->error_log_req;
530 /* Add per-directory configuration entry (for <directory> section);
531 * these are part of the core server config.
534 AP_CORE_DECLARE(void) ap_add_per_dir_conf(server_rec *s, void *dir_config)
536 core_server_config *sconf = ap_get_core_module_config(s->module_config);
537 void **new_space = (void **)apr_array_push(sconf->sec_dir);
539 *new_space = dir_config;
542 AP_CORE_DECLARE(void) ap_add_per_url_conf(server_rec *s, void *url_config)
544 core_server_config *sconf = ap_get_core_module_config(s->module_config);
545 void **new_space = (void **)apr_array_push(sconf->sec_url);
547 *new_space = url_config;
550 AP_CORE_DECLARE(void) ap_add_file_conf(apr_pool_t *p, core_dir_config *conf,
556 conf->sec_file = apr_array_make(p, 2, sizeof(ap_conf_vector_t *));
558 new_space = (void **)apr_array_push(conf->sec_file);
559 *new_space = url_config;
562 AP_CORE_DECLARE(const char *) ap_add_if_conf(apr_pool_t *p,
563 core_dir_config *conf,
567 core_dir_config *new = ap_get_module_config(if_config, &core_module);
570 conf->sec_if = apr_array_make(p, 2, sizeof(ap_conf_vector_t *));
572 if (new->condition_ifelse & AP_CONDITION_ELSE) {
574 if (conf->sec_if->nelts > 0) {
575 core_dir_config *last;
576 ap_conf_vector_t *lastelt = APR_ARRAY_IDX(conf->sec_if,
577 conf->sec_if->nelts - 1,
579 last = ap_get_module_config(lastelt, &core_module);
580 if (last->condition_ifelse & AP_CONDITION_IF)
584 return "<Else> or <ElseIf> section without previous <If> or "
585 "<ElseIf> section in same scope";
588 new_space = (void **)apr_array_push(conf->sec_if);
589 *new_space = if_config;
594 /* We need to do a stable sort, qsort isn't stable. So to make it stable
595 * we'll be maintaining the original index into the list, and using it
596 * as the minor key during sorting. The major key is the number of
597 * components (where the root component is zero).
599 struct reorder_sort_rec {
600 ap_conf_vector_t *elt;
604 static int reorder_sorter(const void *va, const void *vb)
606 const struct reorder_sort_rec *a = va;
607 const struct reorder_sort_rec *b = vb;
608 core_dir_config *core_a;
609 core_dir_config *core_b;
611 core_a = ap_get_core_module_config(a->elt);
612 core_b = ap_get_core_module_config(b->elt);
614 /* a regex always sorts after a non-regex
616 if (!core_a->r && core_b->r) {
619 else if (core_a->r && !core_b->r) {
623 /* we always sort next by the number of components
625 if (core_a->d_components < core_b->d_components) {
628 else if (core_a->d_components > core_b->d_components) {
632 /* They have the same number of components, we now have to compare
633 * the minor key to maintain the original order (from the config.)
635 return a->orig_index - b->orig_index;
638 void ap_core_reorder_directories(apr_pool_t *p, server_rec *s)
640 core_server_config *sconf;
641 apr_array_header_t *sec_dir;
642 struct reorder_sort_rec *sortbin;
644 ap_conf_vector_t **elts;
648 sconf = ap_get_core_module_config(s->module_config);
649 sec_dir = sconf->sec_dir;
650 nelts = sec_dir->nelts;
651 elts = (ap_conf_vector_t **)sec_dir->elts;
654 /* simple case of already being sorted... */
655 /* We're not checking this condition to be fast... we're checking
656 * it to avoid trying to palloc zero bytes, which can trigger some
657 * memory debuggers to barf
662 /* we have to allocate tmp space to do a stable sort */
663 apr_pool_create(&tmp, p);
664 sortbin = apr_palloc(tmp, sec_dir->nelts * sizeof(*sortbin));
665 for (i = 0; i < nelts; ++i) {
666 sortbin[i].orig_index = i;
667 sortbin[i].elt = elts[i];
670 qsort(sortbin, nelts, sizeof(*sortbin), reorder_sorter);
672 /* and now copy back to the original array */
673 for (i = 0; i < nelts; ++i) {
674 elts[i] = sortbin[i].elt;
677 apr_pool_destroy(tmp);
680 /*****************************************************************
682 * There are some elements of the core config structures in which
683 * other modules have a legitimate interest (this is ugly, but necessary
684 * to preserve NCSA back-compatibility). So, we have a bunch of accessors
688 AP_DECLARE(int) ap_allow_options(request_rec *r)
690 core_dir_config *conf =
691 (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
696 AP_DECLARE(int) ap_allow_overrides(request_rec *r)
698 core_dir_config *conf;
699 conf = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
701 return conf->override;
705 * Optional function coming from mod_authn_core, used for
706 * retrieving the type of autorization
708 static APR_OPTIONAL_FN_TYPE(authn_ap_auth_type) *authn_ap_auth_type;
710 AP_DECLARE(const char *) ap_auth_type(request_rec *r)
712 if (authn_ap_auth_type) {
713 return authn_ap_auth_type(r);
719 * Optional function coming from mod_authn_core, used for
720 * retrieving the authorization realm
722 static APR_OPTIONAL_FN_TYPE(authn_ap_auth_name) *authn_ap_auth_name;
724 AP_DECLARE(const char *) ap_auth_name(request_rec *r)
726 if (authn_ap_auth_name) {
727 return authn_ap_auth_name(r);
733 * Optional function coming from mod_access_compat, used to determine how
734 access control interacts with authentication/authorization
736 static APR_OPTIONAL_FN_TYPE(access_compat_ap_satisfies) *access_compat_ap_satisfies;
738 AP_DECLARE(int) ap_satisfies(request_rec *r)
740 if (access_compat_ap_satisfies) {
741 return access_compat_ap_satisfies(r);
743 return SATISFY_NOSPEC;
746 AP_DECLARE(const char *) ap_document_root(request_rec *r) /* Don't use this! */
748 core_server_config *sconf;
749 core_request_config *rconf = ap_get_core_module_config(r->request_config);
750 if (rconf->document_root)
751 return rconf->document_root;
752 sconf = ap_get_core_module_config(r->server->module_config);
753 return sconf->ap_document_root;
756 AP_DECLARE(const char *) ap_context_prefix(request_rec *r)
758 core_request_config *conf = ap_get_core_module_config(r->request_config);
759 if (conf->context_prefix)
760 return conf->context_prefix;
765 AP_DECLARE(const char *) ap_context_document_root(request_rec *r)
767 core_request_config *conf = ap_get_core_module_config(r->request_config);
768 if (conf->context_document_root)
769 return conf->context_document_root;
771 return ap_document_root(r);
774 AP_DECLARE(void) ap_set_document_root(request_rec *r, const char *document_root)
776 core_request_config *conf = ap_get_core_module_config(r->request_config);
777 conf->document_root = document_root;
780 AP_DECLARE(void) ap_set_context_info(request_rec *r, const char *context_prefix,
781 const char *context_document_root)
783 core_request_config *conf = ap_get_core_module_config(r->request_config);
785 conf->context_prefix = context_prefix;
786 if (context_document_root)
787 conf->context_document_root = context_document_root;
790 /* Should probably just get rid of this... the only code that cares is
791 * part of the core anyway (and in fact, it isn't publicised to other
795 char *ap_response_code_string(request_rec *r, int error_index)
797 core_dir_config *dirconf;
798 core_request_config *reqconf = ap_get_core_module_config(r->request_config);
800 /* check for string registered via ap_custom_response() first */
801 if (reqconf->response_code_strings != NULL &&
802 reqconf->response_code_strings[error_index] != NULL) {
803 return reqconf->response_code_strings[error_index];
806 /* check for string specified via ErrorDocument */
807 dirconf = ap_get_core_module_config(r->per_dir_config);
809 if (dirconf->response_code_strings == NULL) {
813 if (dirconf->response_code_strings[error_index] == &errordocument_default) {
817 return dirconf->response_code_strings[error_index];
821 /* Code from Harald Hanche-Olsen <hanche@imf.unit.no> */
822 static APR_INLINE void do_double_reverse (conn_rec *conn)
827 if (conn->double_reverse) {
832 if (conn->remote_host == NULL || conn->remote_host[0] == '\0') {
833 /* single reverse failed, so don't bother */
834 conn->double_reverse = -1;
838 rv = apr_sockaddr_info_get(&sa, conn->remote_host, APR_UNSPEC, 0, 0, conn->pool);
839 if (rv == APR_SUCCESS) {
841 if (apr_sockaddr_equal(sa, conn->client_addr)) {
842 conn->double_reverse = 1;
850 conn->double_reverse = -1;
853 AP_DECLARE(const char *) ap_get_remote_host(conn_rec *conn, void *dir_config,
854 int type, int *str_is_ip)
856 int hostname_lookups;
857 int ignored_str_is_ip;
859 if (!str_is_ip) { /* caller doesn't want to know */
860 str_is_ip = &ignored_str_is_ip;
864 /* If we haven't checked the host name, and we want to */
866 hostname_lookups = ((core_dir_config *)ap_get_core_module_config(dir_config))
869 if (hostname_lookups == HOSTNAME_LOOKUP_UNSET) {
870 hostname_lookups = HOSTNAME_LOOKUP_OFF;
875 hostname_lookups = HOSTNAME_LOOKUP_OFF;
878 if (type != REMOTE_NOLOOKUP
879 && conn->remote_host == NULL
880 && (type == REMOTE_DOUBLE_REV
881 || hostname_lookups != HOSTNAME_LOOKUP_OFF)) {
883 if (apr_getnameinfo(&conn->remote_host, conn->client_addr, 0)
885 ap_str_tolower(conn->remote_host);
887 if (hostname_lookups == HOSTNAME_LOOKUP_DOUBLE) {
888 do_double_reverse(conn);
889 if (conn->double_reverse != 1) {
890 conn->remote_host = NULL;
895 /* if failed, set it to the NULL string to indicate error */
896 if (conn->remote_host == NULL) {
897 conn->remote_host = "";
901 if (type == REMOTE_DOUBLE_REV) {
902 do_double_reverse(conn);
903 if (conn->double_reverse == -1) {
909 * Return the desired information; either the remote DNS name, if found,
910 * or either NULL (if the hostname was requested) or the IP address
911 * (if any identifier was requested).
913 if (conn->remote_host != NULL && conn->remote_host[0] != '\0') {
914 return conn->remote_host;
917 if (type == REMOTE_HOST || type == REMOTE_DOUBLE_REV) {
922 return conn->client_ip;
928 * Optional function coming from mod_ident, used for looking up ident user
930 static APR_OPTIONAL_FN_TYPE(ap_ident_lookup) *ident_lookup;
932 AP_DECLARE(const char *) ap_get_remote_logname(request_rec *r)
934 if (r->connection->remote_logname != NULL) {
935 return r->connection->remote_logname;
939 return ident_lookup(r);
945 /* There are two options regarding what the "name" of a server is. The
946 * "canonical" name as defined by ServerName and Port, or the "client's
947 * name" as supplied by a possible Host: header or full URI.
949 * The DNS option to UseCanonicalName causes this routine to do a
950 * reverse lookup on the local IP address of the connection and use
951 * that for the ServerName. This makes its value more reliable while
952 * at the same time allowing Demon's magic virtual hosting to work.
953 * The assumption is that DNS lookups are sufficiently quick...
956 AP_DECLARE(const char *) ap_get_server_name(request_rec *r)
958 conn_rec *conn = r->connection;
962 d = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
964 switch (d->use_canonical_name) {
965 case USE_CANONICAL_NAME_ON:
966 retval = r->server->server_hostname;
968 case USE_CANONICAL_NAME_DNS:
969 if (conn->local_host == NULL) {
970 if (apr_getnameinfo(&conn->local_host,
971 conn->local_addr, 0) != APR_SUCCESS)
972 conn->local_host = apr_pstrdup(conn->pool,
973 r->server->server_hostname);
975 ap_str_tolower(conn->local_host);
978 retval = conn->local_host;
980 case USE_CANONICAL_NAME_OFF:
981 case USE_CANONICAL_NAME_UNSET:
982 retval = r->hostname ? r->hostname : r->server->server_hostname;
985 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00109)
986 "ap_get_server_name: Invalid UCN Option somehow");
987 retval = "localhost";
994 * Get the current server name from the request for the purposes
995 * of using in a URL. If the server name is an IPv6 literal
996 * address, it will be returned in URL format (e.g., "[fe80::1]").
998 AP_DECLARE(const char *) ap_get_server_name_for_url(request_rec *r)
1000 const char *plain_server_name = ap_get_server_name(r);
1003 if (ap_strchr_c(plain_server_name, ':')) { /* IPv6 literal? */
1004 return apr_pstrcat(r->pool, "[", plain_server_name, "]", NULL);
1007 return plain_server_name;
1010 AP_DECLARE(apr_port_t) ap_get_server_port(const request_rec *r)
1013 core_dir_config *d =
1014 (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
1016 switch (d->use_canonical_name) {
1017 case USE_CANONICAL_NAME_OFF:
1018 case USE_CANONICAL_NAME_DNS:
1019 case USE_CANONICAL_NAME_UNSET:
1020 if (d->use_canonical_phys_port == USE_CANONICAL_PHYS_PORT_ON)
1021 port = r->parsed_uri.port_str ? r->parsed_uri.port :
1022 r->connection->local_addr->port ? r->connection->local_addr->port :
1023 r->server->port ? r->server->port :
1025 else /* USE_CANONICAL_PHYS_PORT_OFF or USE_CANONICAL_PHYS_PORT_UNSET */
1026 port = r->parsed_uri.port_str ? r->parsed_uri.port :
1027 r->server->port ? r->server->port :
1030 case USE_CANONICAL_NAME_ON:
1031 /* With UseCanonicalName on (and in all versions prior to 1.3)
1032 * Apache will use the hostname and port specified in the
1033 * ServerName directive to construct a canonical name for the
1034 * server. (If no port was specified in the ServerName
1035 * directive, Apache uses the port supplied by the client if
1036 * any is supplied, and finally the default port for the protocol
1039 if (d->use_canonical_phys_port == USE_CANONICAL_PHYS_PORT_ON)
1040 port = r->server->port ? r->server->port :
1041 r->connection->local_addr->port ? r->connection->local_addr->port :
1043 else /* USE_CANONICAL_PHYS_PORT_OFF or USE_CANONICAL_PHYS_PORT_UNSET */
1044 port = r->server->port ? r->server->port :
1048 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00110)
1049 "ap_get_server_port: Invalid UCN Option somehow");
1050 port = ap_default_port(r);
1057 AP_DECLARE(char *) ap_construct_url(apr_pool_t *p, const char *uri,
1060 unsigned port = ap_get_server_port(r);
1061 const char *host = ap_get_server_name_for_url(r);
1063 if (ap_is_default_port(port, r)) {
1064 return apr_pstrcat(p, ap_http_scheme(r), "://", host, uri, NULL);
1067 return apr_psprintf(p, "%s://%s:%u%s", ap_http_scheme(r), host, port, uri);
1070 AP_DECLARE(apr_off_t) ap_get_limit_req_body(const request_rec *r)
1072 core_dir_config *d =
1073 (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
1075 if (d->limit_req_body == AP_LIMIT_REQ_BODY_UNSET) {
1076 return AP_DEFAULT_LIMIT_REQ_BODY;
1079 return d->limit_req_body;
1083 /*****************************************************************
1085 * Commands... this module handles almost all of the NCSA httpd.conf
1086 * commands, but most of the old srm.conf is in the the modules.
1090 /* returns a parent if it matches the given directive */
1091 static const ap_directive_t * find_parent(const ap_directive_t *dirp,
1094 while (dirp->parent != NULL) {
1095 dirp = dirp->parent;
1097 /* ### it would be nice to have atom-ized directives */
1098 if (strcasecmp(dirp->directive, what) == 0)
1105 AP_DECLARE(const char *) ap_check_cmd_context(cmd_parms *cmd,
1108 const char *gt = (cmd->cmd->name[0] == '<'
1109 && cmd->cmd->name[strlen(cmd->cmd->name)-1] != '>')
1111 const ap_directive_t *found;
1113 if ((forbidden & NOT_IN_VIRTUALHOST) && cmd->server->is_virtual) {
1114 return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
1115 " cannot occur within <VirtualHost> section", NULL);
1118 if ((forbidden & (NOT_IN_LIMIT | NOT_IN_DIR_LOC_FILE))
1119 && cmd->limited != -1) {
1120 return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
1121 " cannot occur within <Limit> or <LimitExcept> "
1125 if ((forbidden & NOT_IN_HTACCESS) && (cmd->pool == cmd->temp_pool)) {
1126 return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
1127 " cannot occur within htaccess files", NULL);
1130 if ((forbidden & NOT_IN_DIR_LOC_FILE) == NOT_IN_DIR_LOC_FILE) {
1131 if (cmd->path != NULL) {
1132 return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
1133 " cannot occur within <Directory/Location/Files> "
1136 if (cmd->cmd->req_override & EXEC_ON_READ) {
1137 /* EXEC_ON_READ must be NOT_IN_DIR_LOC_FILE, if not, it will
1138 * (deliberately) segfault below in the individual tests...
1144 if (((forbidden & NOT_IN_DIRECTORY)
1145 && ((found = find_parent(cmd->directive, "<Directory"))
1146 || (found = find_parent(cmd->directive, "<DirectoryMatch"))))
1147 || ((forbidden & NOT_IN_LOCATION)
1148 && ((found = find_parent(cmd->directive, "<Location"))
1149 || (found = find_parent(cmd->directive, "<LocationMatch"))))
1150 || ((forbidden & NOT_IN_FILES)
1151 && ((found = find_parent(cmd->directive, "<Files"))
1152 || (found = find_parent(cmd->directive, "<FilesMatch"))
1153 || (found = find_parent(cmd->directive, "<If"))
1154 || (found = find_parent(cmd->directive, "<ElseIf"))
1155 || (found = find_parent(cmd->directive, "<Else"))))) {
1156 return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
1157 " cannot occur within ", found->directive,
1164 static const char *set_access_name(cmd_parms *cmd, void *dummy,
1167 void *sconf = cmd->server->module_config;
1168 core_server_config *conf = ap_get_core_module_config(sconf);
1170 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
1175 conf->access_name = apr_pstrdup(cmd->pool, arg);
1179 AP_DECLARE(const char *) ap_resolve_env(apr_pool_t *p, const char * word)
1181 # define SMALL_EXPANSION 5
1186 } *result, *current, sresult[SMALL_EXPANSION];
1188 const char *s, *e, *ep;
1192 s = ap_strchr_c(word, '$');
1197 /* well, actually something to do */
1198 ep = word + strlen(word);
1200 result = current = &(sresult[spc++]);
1201 current->next = NULL;
1202 current->string = word;
1203 current->len = s - word;
1204 outlen = current->len;
1207 /* prepare next entry */
1209 current->next = (spc < SMALL_EXPANSION)
1211 : (struct sll *)apr_palloc(p,
1212 sizeof(*current->next));
1213 current = current->next;
1214 current->next = NULL;
1219 if (s[1] == '{' && (e = ap_strchr_c(s, '}'))) {
1220 char *name = apr_pstrndup(p, s+2, e-s-2);
1222 if (server_config_defined_vars)
1223 word = apr_table_get(server_config_defined_vars, name);
1225 word = getenv(name);
1227 current->string = word;
1228 current->len = strlen(word);
1229 outlen += current->len;
1232 if (ap_strchr(name, ':') == 0)
1233 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, APLOGNO(00111)
1234 "Config variable ${%s} is not defined",
1236 current->string = s;
1237 current->len = e - s + 1;
1238 outlen += current->len;
1243 current->string = s++;
1250 s = ap_strchr_c(s, '$');
1251 current->string = word;
1252 current->len = s ? s - word : ep - word;
1253 outlen += current->len;
1257 /* assemble result */
1258 res_buf = cp = apr_palloc(p, outlen + 1);
1261 memcpy(cp, result->string, result->len);
1264 result = result->next;
1266 res_buf[outlen] = '\0';
1271 static int reset_config_defines(void *dummy)
1273 ap_server_config_defines = saved_server_config_defines;
1274 server_config_defined_vars = NULL;
1279 * Make sure we can revert the effects of Define/UnDefine when restarting.
1280 * This function must be called once per loading of the config, before
1281 * ap_server_config_defines is changed. This may be during reading of the
1282 * config, which is even before the pre_config hook is run (due to
1283 * EXEC_ON_READ for Define/UnDefine).
1285 static void init_config_defines(apr_pool_t *pconf)
1287 saved_server_config_defines = ap_server_config_defines;
1288 /* Use apr_array_copy instead of apr_array_copy_hdr because it does not
1289 * protect from the way unset_define removes entries.
1291 ap_server_config_defines = apr_array_copy(pconf, ap_server_config_defines);
1294 static const char *set_define(cmd_parms *cmd, void *dummy,
1295 const char *name, const char *value)
1297 const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
1300 if (ap_strchr_c(name, ':') != NULL)
1301 return "Variable name must not contain ':'";
1303 if (!saved_server_config_defines)
1304 init_config_defines(cmd->pool);
1305 if (!ap_exists_config_define(name)) {
1306 char **newv = (char **)apr_array_push(ap_server_config_defines);
1307 *newv = apr_pstrdup(cmd->pool, name);
1310 if (!server_config_defined_vars)
1311 server_config_defined_vars = apr_table_make(cmd->pool, 5);
1312 apr_table_setn(server_config_defined_vars, name, value);
1318 static const char *unset_define(cmd_parms *cmd, void *dummy,
1323 const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
1326 if (ap_strchr_c(name, ':') != NULL)
1327 return "Variable name must not contain ':'";
1329 if (!saved_server_config_defines)
1330 init_config_defines(cmd->pool);
1332 defines = (char **)ap_server_config_defines->elts;
1333 for (i = 0; i < ap_server_config_defines->nelts; i++) {
1334 if (strcmp(defines[i], name) == 0) {
1335 defines[i] = apr_array_pop(ap_server_config_defines);
1340 if (server_config_defined_vars) {
1341 apr_table_unset(server_config_defined_vars, name);
1347 static const char *generate_message(cmd_parms *cmd, void *dummy,
1350 /* cast with 64-bit warning avoidance */
1351 int level = (cmd->info==(void*)APLOG_ERR)? APLOG_ERR: APLOG_WARNING;
1354 /* get position information from wherever we can? */
1355 ap_configfile_t * cf = cmd->config_file;
1356 ap_directive_t const * ed1 = cmd->directive;
1357 ap_directive_t const * ed2 = cmd->err_directive;
1359 /* expect an argument */
1360 if (!arg || !*arg) {
1361 return "The Error or Warning directive was used with no message.";
1364 /* set message, strip off quotes if necessary */
1366 if (*arg == '"' || *arg == '\'') {
1367 apr_size_t len = strlen(arg);
1368 char last = *(arg + len - 1);
1371 msg = apr_pstrndup(cmd->pool, arg + 1, len - 2);
1375 /* generate error or warning with a configuration file position.
1376 * the log is displayed on the terminal as no log file is opened yet.
1378 ap_log_error(APLOG_MARK, APLOG_NOERRNO|level, 0, NULL,
1379 "%s on line %d of %s", msg,
1380 cf? cf->line_number:
1382 ed2? ed2->line_num: -1,
1385 ed2? ed2->filename: "<UNKNOWN>");
1387 /* message displayed above, return will stop configuration processing */
1388 return level==APLOG_ERR?
1389 "Configuration processing stopped by Error directive": NULL;
1393 static const char *set_gprof_dir(cmd_parms *cmd, void *dummy, const char *arg)
1395 void *sconf = cmd->server->module_config;
1396 core_server_config *conf = ap_get_core_module_config(sconf);
1398 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
1403 conf->gprof_dir = arg;
1408 static const char *set_add_default_charset(cmd_parms *cmd,
1409 void *d_, const char *arg)
1411 core_dir_config *d = d_;
1413 if (!strcasecmp(arg, "Off")) {
1414 d->add_default_charset = ADD_DEFAULT_CHARSET_OFF;
1416 else if (!strcasecmp(arg, "On")) {
1417 d->add_default_charset = ADD_DEFAULT_CHARSET_ON;
1418 d->add_default_charset_name = DEFAULT_ADD_DEFAULT_CHARSET_NAME;
1421 d->add_default_charset = ADD_DEFAULT_CHARSET_ON;
1422 d->add_default_charset_name = arg;
1428 static const char *set_document_root(cmd_parms *cmd, void *dummy,
1431 void *sconf = cmd->server->module_config;
1432 core_server_config *conf = ap_get_core_module_config(sconf);
1434 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
1439 /* When ap_document_root_check is false; skip all the stuff below */
1440 if (!ap_document_root_check) {
1441 conf->ap_document_root = arg;
1445 /* Make it absolute, relative to ServerRoot */
1446 arg = ap_server_root_relative(cmd->pool, arg);
1448 return "DocumentRoot must be a directory";
1451 /* TODO: ap_configtestonly */
1452 if (apr_filepath_merge((char**)&conf->ap_document_root, NULL, arg,
1453 APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS
1454 || !ap_is_directory(cmd->pool, arg)) {
1455 if (cmd->server->is_virtual) {
1456 ap_log_perror(APLOG_MARK, APLOG_STARTUP, 0,
1457 cmd->pool, APLOGNO(00112)
1458 "Warning: DocumentRoot [%s] does not exist",
1460 conf->ap_document_root = arg;
1463 return "DocumentRoot must be a directory";
1469 AP_DECLARE(void) ap_custom_response(request_rec *r, int status,
1472 core_request_config *conf = ap_get_core_module_config(r->request_config);
1475 if (conf->response_code_strings == NULL) {
1476 conf->response_code_strings =
1477 apr_pcalloc(r->pool,
1478 sizeof(*conf->response_code_strings) * RESPONSE_CODES);
1481 idx = ap_index_of_response(status);
1483 conf->response_code_strings[idx] =
1484 ((ap_is_url(string) || (*string == '/')) && (*string != '"')) ?
1485 apr_pstrdup(r->pool, string) : apr_pstrcat(r->pool, "\"", string, NULL);
1488 static const char *set_error_document(cmd_parms *cmd, void *conf_,
1489 const char *errno_str, const char *msg)
1491 core_dir_config *conf = conf_;
1492 int error_number, index_number, idx500;
1493 enum { MSG, LOCAL_PATH, REMOTE_PATH } what = MSG;
1495 /* 1st parameter should be a 3 digit number, which we recognize;
1496 * convert it into an array index
1498 error_number = atoi(errno_str);
1499 idx500 = ap_index_of_response(HTTP_INTERNAL_SERVER_ERROR);
1501 if (error_number == HTTP_INTERNAL_SERVER_ERROR) {
1502 index_number = idx500;
1504 else if ((index_number = ap_index_of_response(error_number)) == idx500) {
1505 return apr_pstrcat(cmd->pool, "Unsupported HTTP response code ",
1509 /* Heuristic to determine second argument. */
1510 if (ap_strchr_c(msg,' '))
1512 else if (msg[0] == '/')
1514 else if (ap_is_url(msg))
1519 /* The entry should be ignored if it is a full URL for a 401 error */
1521 if (error_number == 401 && what == REMOTE_PATH) {
1522 ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, cmd->server, APLOGNO(00113)
1523 "cannot use a full URL in a 401 ErrorDocument "
1524 "directive --- ignoring!");
1526 else { /* Store it... */
1527 if (conf->response_code_strings == NULL) {
1528 conf->response_code_strings =
1529 apr_pcalloc(cmd->pool,
1530 sizeof(*conf->response_code_strings) *
1534 if (strcmp(msg, "default") == 0) {
1535 /* special case: ErrorDocument 404 default restores the
1536 * canned server error response
1538 conf->response_code_strings[index_number] = &errordocument_default;
1541 /* hack. Prefix a " if it is a msg; as that is what
1542 * http_protocol.c relies on to distinguish between
1543 * a msg and a (local) path.
1545 conf->response_code_strings[index_number] = (what == MSG) ?
1546 apr_pstrcat(cmd->pool, "\"", msg, NULL) :
1547 apr_pstrdup(cmd->pool, msg);
1554 static const char *set_allow_opts(cmd_parms *cmd, allow_options_t *opts,
1557 allow_options_t opt;
1560 char *w, *p = (char *) l;
1563 while ((w = apr_strtok(p, ",", &tok_state)) != NULL) {
1571 if (!strcasecmp(w, "Indexes")) {
1574 else if (!strcasecmp(w, "Includes")) {
1575 /* If Includes is permitted, both Includes and
1576 * IncludesNOEXEC may be changed. */
1577 opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
1579 else if (!strcasecmp(w, "IncludesNOEXEC")) {
1582 else if (!strcasecmp(w, "FollowSymLinks")) {
1583 opt = OPT_SYM_LINKS;
1585 else if (!strcasecmp(w, "SymLinksIfOwnerMatch")) {
1586 opt = OPT_SYM_OWNER;
1588 else if (!strcasecmp(w, "ExecCGI")) {
1591 else if (!strcasecmp(w, "MultiViews")) {
1594 else if (!strcasecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
1595 opt = OPT_MULTI|OPT_EXECCGI;
1597 else if (!strcasecmp(w, "None")) {
1600 else if (!strcasecmp(w, "All")) {
1604 return apr_pstrcat(cmd->pool, "Illegal option ", w, NULL);
1610 (*opts) &= (~OPT_UNSET);
1615 static const char *set_override(cmd_parms *cmd, void *d_, const char *l)
1617 core_dir_config *d = d_;
1622 /* Throw a warning if we're in <Location> or <Files> */
1623 if (ap_check_cmd_context(cmd, NOT_IN_LOCATION | NOT_IN_FILES)) {
1624 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00114)
1625 "Useless use of AllowOverride in line %d of %s.",
1626 cmd->directive->line_num, cmd->directive->filename);
1628 if ((err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS)) != NULL)
1631 d->override = OR_NONE;
1633 w = ap_getword_conf(cmd->temp_pool, &l);
1641 if (!strcasecmp(w, "Limit")) {
1642 d->override |= OR_LIMIT;
1644 else if (!strcasecmp(k, "Options")) {
1645 d->override |= OR_OPTIONS;
1647 set_allow_opts(cmd, &(d->override_opts), v);
1649 d->override_opts = OPT_ALL;
1651 else if (!strcasecmp(w, "FileInfo")) {
1652 d->override |= OR_FILEINFO;
1654 else if (!strcasecmp(w, "AuthConfig")) {
1655 d->override |= OR_AUTHCFG;
1657 else if (!strcasecmp(w, "Indexes")) {
1658 d->override |= OR_INDEXES;
1660 else if (!strcasecmp(w, "Nonfatal")) {
1661 if (!strcasecmp(v, "Override")) {
1662 d->override |= NONFATAL_OVERRIDE;
1664 else if (!strcasecmp(v, "Unknown")) {
1665 d->override |= NONFATAL_UNKNOWN;
1667 else if (!strcasecmp(v, "All")) {
1668 d->override |= NONFATAL_ALL;
1671 else if (!strcasecmp(w, "None")) {
1672 d->override = OR_NONE;
1674 else if (!strcasecmp(w, "All")) {
1675 d->override = OR_ALL;
1678 return apr_pstrcat(cmd->pool, "Illegal override option ", w, NULL);
1681 d->override &= ~OR_UNSET;
1687 static const char *set_override_list(cmd_parms *cmd, void *d_, int argc, char *const argv[])
1689 core_dir_config *d = d_;
1693 /* Throw a warning if we're in <Location> or <Files> */
1694 if (ap_check_cmd_context(cmd, NOT_IN_LOCATION | NOT_IN_FILES)) {
1695 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00115)
1696 "Useless use of AllowOverrideList at %s:%d",
1697 cmd->directive->filename, cmd->directive->line_num);
1699 if ((err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS)) != NULL)
1702 d->override_list = apr_table_make(cmd->pool, argc);
1704 for (i=0;i<argc;i++){
1705 if (!strcasecmp(argv[i], "None")) {
1707 return "'None' not allowed with other directives in "
1708 "AllowOverrideList";
1713 const command_rec *result = NULL;
1714 module *mod = ap_top_module;
1715 result = ap_find_command_in_modules(argv[i], &mod);
1716 if (result == NULL) {
1717 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server,
1718 APLOGNO(00116) "Discarding unrecognized "
1719 "directive `%s' in AllowOverrideList at %s:%d",
1720 argv[i], cmd->directive->filename,
1721 cmd->directive->line_num);
1724 else if ((result->req_override & (OR_ALL|ACCESS_CONF)) == 0) {
1725 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server,
1726 APLOGNO(02304) "Discarding directive `%s' not "
1727 "allowed in AllowOverrideList at %s:%d",
1728 argv[i], cmd->directive->filename,
1729 cmd->directive->line_num);
1733 apr_table_set(d->override_list, argv[i], "1");
1741 static const char *set_options(cmd_parms *cmd, void *d_, const char *l)
1743 core_dir_config *d = d_;
1744 allow_options_t opt;
1751 char *w = ap_getword_conf(cmd->temp_pool, &l);
1754 if (*w == '+' || *w == '-') {
1756 if (!merge && !first && !all_none) {
1757 return "Either all Options must start with + or -, or no Option may.";
1765 return "Either all Options must start with + or -, or no Option may.";
1768 if (!strcasecmp(w, "Indexes")) {
1771 else if (!strcasecmp(w, "Includes")) {
1772 opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
1774 else if (!strcasecmp(w, "IncludesNOEXEC")) {
1777 else if (!strcasecmp(w, "FollowSymLinks")) {
1778 opt = OPT_SYM_LINKS;
1780 else if (!strcasecmp(w, "SymLinksIfOwnerMatch")) {
1781 opt = OPT_SYM_OWNER;
1783 else if (!strcasecmp(w, "ExecCGI")) {
1786 else if (!strcasecmp(w, "MultiViews")) {
1789 else if (!strcasecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
1790 opt = OPT_MULTI|OPT_EXECCGI;
1792 else if (!strcasecmp(w, "None")) {
1794 return "'Options None' must be the first Option given.";
1796 else if (merge) { /* Only works since None may not follow any other option. */
1797 return "You may not use 'Options +None' or 'Options -None'.";
1802 else if (!strcasecmp(w, "All")) {
1804 return "'Options All' must be the first option given.";
1806 else if (merge) { /* Only works since All may not follow any other option. */
1807 return "You may not use 'Options +All' or 'Options -All'.";
1813 return apr_pstrcat(cmd->pool, "Illegal option ", w, NULL);
1816 if ( (cmd->override_opts & opt) != opt ) {
1817 return apr_pstrcat(cmd->pool, "Option ", w, " not allowed here", NULL);
1819 else if (action == '-') {
1820 /* we ensure the invariant (d->opts_add & d->opts_remove) == 0 */
1821 d->opts_remove |= opt;
1822 d->opts_add &= ~opt;
1825 else if (action == '+') {
1827 d->opts_remove &= ~opt;
1840 static const char *set_default_type(cmd_parms *cmd, void *d_,
1843 if ((strcasecmp(arg, "off") != 0) && (strcasecmp(arg, "none") != 0)) {
1844 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00117)
1845 "Ignoring deprecated use of DefaultType in line %d of %s.",
1846 cmd->directive->line_num, cmd->directive->filename);
1853 * Note what data should be used when forming file ETag values.
1854 * It would be nicer to do this as an ITERATE, but then we couldn't
1855 * remember the +/- state properly.
1857 static const char *set_etag_bits(cmd_parms *cmd, void *mconfig,
1860 core_dir_config *cfg;
1861 etag_components_t bit;
1869 cfg = (core_dir_config *)mconfig;
1874 while (args[0] != '\0') {
1878 token = ap_getword_conf(cmd->temp_pool, &args);
1879 if ((*token == '+') || (*token == '-')) {
1885 * The occurrence of an absolute setting wipes
1886 * out any previous relative ones. The first such
1887 * occurrence forgets any inherited ones, too.
1890 cfg->etag_bits = ETAG_UNSET;
1891 cfg->etag_add = ETAG_UNSET;
1892 cfg->etag_remove = ETAG_UNSET;
1897 if (strcasecmp(token, "None") == 0) {
1898 if (action != '*') {
1902 cfg->etag_bits = bit = ETAG_NONE;
1906 else if (strcasecmp(token, "All") == 0) {
1907 if (action != '*') {
1912 cfg->etag_bits = bit = ETAG_ALL;
1915 else if (strcasecmp(token, "Size") == 0) {
1918 else if ((strcasecmp(token, "LMTime") == 0)
1919 || (strcasecmp(token, "MTime") == 0)
1920 || (strcasecmp(token, "LastModified") == 0)) {
1923 else if (strcasecmp(token, "INode") == 0) {
1927 return apr_pstrcat(cmd->pool, "Unknown keyword '",
1928 token, "' for ", cmd->cmd->name,
1929 " directive", NULL);
1933 return apr_pstrcat(cmd->pool, cmd->cmd->name, " keyword '",
1934 token, "' cannot be used with '+' or '-'",
1938 if (action == '+') {
1940 * Make sure it's in the 'add' list and absent from the
1943 cfg->etag_add |= bit;
1944 cfg->etag_remove &= (~ bit);
1946 else if (action == '-') {
1947 cfg->etag_remove |= bit;
1948 cfg->etag_add &= (~ bit);
1952 * Non-relative values wipe out any + or - values
1953 * accumulated so far.
1955 cfg->etag_bits |= bit;
1956 cfg->etag_add = ETAG_UNSET;
1957 cfg->etag_remove = ETAG_UNSET;
1963 * Any setting at all will clear the 'None' and 'Unset' bits.
1966 if (cfg->etag_add != ETAG_UNSET) {
1967 cfg->etag_add &= (~ ETAG_UNSET);
1970 if (cfg->etag_remove != ETAG_UNSET) {
1971 cfg->etag_remove &= (~ ETAG_UNSET);
1975 cfg->etag_bits &= (~ ETAG_UNSET);
1977 if ((cfg->etag_bits & ETAG_NONE) != ETAG_NONE) {
1978 cfg->etag_bits &= (~ ETAG_NONE);
1985 static const char *set_enable_mmap(cmd_parms *cmd, void *d_,
1988 core_dir_config *d = d_;
1990 if (strcasecmp(arg, "on") == 0) {
1991 d->enable_mmap = ENABLE_MMAP_ON;
1993 else if (strcasecmp(arg, "off") == 0) {
1994 d->enable_mmap = ENABLE_MMAP_OFF;
1997 return "parameter must be 'on' or 'off'";
2003 static const char *set_enable_sendfile(cmd_parms *cmd, void *d_,
2006 core_dir_config *d = d_;
2008 if (strcasecmp(arg, "on") == 0) {
2009 d->enable_sendfile = ENABLE_SENDFILE_ON;
2011 else if (strcasecmp(arg, "off") == 0) {
2012 d->enable_sendfile = ENABLE_SENDFILE_OFF;
2015 return "parameter must be 'on' or 'off'";
2023 * Report a missing-'>' syntax error.
2025 static char *unclosed_directive(cmd_parms *cmd)
2027 return apr_pstrcat(cmd->pool, cmd->cmd->name,
2028 "> directive missing closing '>'", NULL);
2032 * Report a missing args in '<Foo >' syntax error.
2034 static char *missing_container_arg(cmd_parms *cmd)
2036 return apr_pstrcat(cmd->pool, cmd->cmd->name,
2037 "> directive requires additional arguments", NULL);
2040 AP_CORE_DECLARE_NONSTD(const char *) ap_limit_section(cmd_parms *cmd,
2044 const char *endp = ap_strrchr_c(arg, '>');
2045 const char *limited_methods;
2046 void *tog = cmd->cmd->cmd_data;
2047 apr_int64_t limited = 0;
2048 apr_int64_t old_limited = cmd->limited;
2052 return unclosed_directive(cmd);
2055 limited_methods = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2057 if (!limited_methods[0]) {
2058 return missing_container_arg(cmd);
2061 while (limited_methods[0]) {
2062 char *method = ap_getword_conf(cmd->temp_pool, &limited_methods);
2065 /* check for builtin or module registered method number */
2066 methnum = ap_method_number_of(method);
2068 if (methnum == M_TRACE && !tog) {
2069 return "TRACE cannot be controlled by <Limit>, see TraceEnable";
2071 else if (methnum == M_INVALID) {
2072 /* method has not been registered yet, but resorce restriction
2073 * is always checked before method handling, so register it.
2075 methnum = ap_method_register(cmd->pool,
2076 apr_pstrdup(cmd->pool, method));
2079 limited |= (AP_METHOD_BIT << methnum);
2082 /* Killing two features with one function,
2083 * if (tog == NULL) <Limit>, else <LimitExcept>
2085 limited = tog ? ~limited : limited;
2087 if (!(old_limited & limited)) {
2088 return apr_pstrcat(cmd->pool, cmd->cmd->name,
2089 "> directive excludes all methods", NULL);
2091 else if ((old_limited & limited) == old_limited) {
2092 return apr_pstrcat(cmd->pool, cmd->cmd->name,
2093 "> directive specifies methods already excluded",
2097 cmd->limited &= limited;
2099 errmsg = ap_walk_config(cmd->directive->first_child, cmd, cmd->context);
2101 cmd->limited = old_limited;
2106 /* XXX: Bogus - need to do this differently (at least OS2/Netware suffer
2107 * the same problem!!!
2108 * We use this in <DirectoryMatch> and <FilesMatch>, to ensure that
2109 * people don't get bitten by wrong-cased regex matches
2113 #define USE_ICASE AP_REG_ICASE
2118 static const char *dirsection(cmd_parms *cmd, void *mconfig, const char *arg)
2121 const char *endp = ap_strrchr_c(arg, '>');
2122 int old_overrides = cmd->override;
2123 char *old_path = cmd->path;
2124 core_dir_config *conf;
2125 ap_conf_vector_t *new_dir_conf = ap_create_per_dir_config(cmd->pool);
2126 ap_regex_t *r = NULL;
2127 const command_rec *thiscmd = cmd->cmd;
2129 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2135 return unclosed_directive(cmd);
2138 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2141 return missing_container_arg(cmd);
2144 cmd->path = ap_getword_conf(cmd->pool, &arg);
2145 cmd->override = OR_ALL|ACCESS_CONF;
2147 if (!strcmp(cmd->path, "~")) {
2148 cmd->path = ap_getword_conf(cmd->pool, &arg);
2150 return "<Directory ~ > block must specify a path";
2151 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
2153 return "Regex could not be compiled";
2156 else if (thiscmd->cmd_data) { /* <DirectoryMatch> */
2157 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
2159 return "Regex could not be compiled";
2162 else if (!strcmp(cmd->path, "/") == 0)
2167 * Ensure that the pathname is canonical, and append the trailing /
2169 apr_status_t rv = apr_filepath_merge(&newpath, NULL, cmd->path,
2170 APR_FILEPATH_TRUENAME, cmd->pool);
2171 if (rv != APR_SUCCESS && rv != APR_EPATHWILD) {
2172 return apr_pstrcat(cmd->pool, "<Directory \"", cmd->path,
2173 "\"> path is invalid.", NULL);
2176 cmd->path = newpath;
2177 if (cmd->path[strlen(cmd->path) - 1] != '/')
2178 cmd->path = apr_pstrcat(cmd->pool, cmd->path, "/", NULL);
2181 /* initialize our config and fetch it */
2182 conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path,
2183 &core_module, cmd->pool);
2185 errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf);
2190 conf->d = cmd->path;
2191 conf->d_is_fnmatch = (apr_fnmatch_test(conf->d) != 0);
2193 /* Make this explicit - the "/" root has 0 elements, that is, we
2194 * will always merge it, and it will always sort and merge first.
2195 * All others are sorted and tested by the number of slashes.
2197 if (strcmp(conf->d, "/") == 0)
2198 conf->d_components = 0;
2200 conf->d_components = ap_count_dirs(conf->d);
2202 ap_add_per_dir_conf(cmd->server, new_dir_conf);
2205 return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
2206 "> arguments not (yet) supported.", NULL);
2209 cmd->path = old_path;
2210 cmd->override = old_overrides;
2215 static const char *urlsection(cmd_parms *cmd, void *mconfig, const char *arg)
2218 const char *endp = ap_strrchr_c(arg, '>');
2219 int old_overrides = cmd->override;
2220 char *old_path = cmd->path;
2221 core_dir_config *conf;
2222 ap_regex_t *r = NULL;
2223 const command_rec *thiscmd = cmd->cmd;
2224 ap_conf_vector_t *new_url_conf = ap_create_per_dir_config(cmd->pool);
2225 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2231 return unclosed_directive(cmd);
2234 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2237 return missing_container_arg(cmd);
2240 cmd->path = ap_getword_conf(cmd->pool, &arg);
2241 cmd->override = OR_ALL|ACCESS_CONF;
2243 if (thiscmd->cmd_data) { /* <LocationMatch> */
2244 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
2246 return "Regex could not be compiled";
2249 else if (!strcmp(cmd->path, "~")) {
2250 cmd->path = ap_getword_conf(cmd->pool, &arg);
2251 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
2253 return "Regex could not be compiled";
2257 /* initialize our config and fetch it */
2258 conf = ap_set_config_vectors(cmd->server, new_url_conf, cmd->path,
2259 &core_module, cmd->pool);
2261 errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_url_conf);
2265 conf->d = apr_pstrdup(cmd->pool, cmd->path); /* No mangling, please */
2266 conf->d_is_fnmatch = apr_fnmatch_test(conf->d) != 0;
2269 ap_add_per_url_conf(cmd->server, new_url_conf);
2272 return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
2273 "> arguments not (yet) supported.", NULL);
2276 cmd->path = old_path;
2277 cmd->override = old_overrides;
2282 static const char *filesection(cmd_parms *cmd, void *mconfig, const char *arg)
2285 const char *endp = ap_strrchr_c(arg, '>');
2286 int old_overrides = cmd->override;
2287 char *old_path = cmd->path;
2288 core_dir_config *conf;
2289 ap_regex_t *r = NULL;
2290 const command_rec *thiscmd = cmd->cmd;
2291 ap_conf_vector_t *new_file_conf = ap_create_per_dir_config(cmd->pool);
2292 const char *err = ap_check_cmd_context(cmd,
2293 NOT_IN_LOCATION | NOT_IN_LIMIT);
2300 return unclosed_directive(cmd);
2303 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2306 return missing_container_arg(cmd);
2309 cmd->path = ap_getword_conf(cmd->pool, &arg);
2310 /* Only if not an .htaccess file */
2312 cmd->override = OR_ALL|ACCESS_CONF;
2315 if (thiscmd->cmd_data) { /* <FilesMatch> */
2316 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
2318 return "Regex could not be compiled";
2321 else if (!strcmp(cmd->path, "~")) {
2322 cmd->path = ap_getword_conf(cmd->pool, &arg);
2323 r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
2325 return "Regex could not be compiled";
2330 /* Ensure that the pathname is canonical, but we
2331 * can't test the case/aliases without a fixed path */
2332 if (apr_filepath_merge(&newpath, "", cmd->path,
2333 0, cmd->pool) != APR_SUCCESS)
2334 return apr_pstrcat(cmd->pool, "<Files \"", cmd->path,
2335 "\"> is invalid.", NULL);
2336 cmd->path = newpath;
2339 /* initialize our config and fetch it */
2340 conf = ap_set_config_vectors(cmd->server, new_file_conf, cmd->path,
2341 &core_module, cmd->pool);
2343 errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_file_conf);
2347 conf->d = cmd->path;
2348 conf->d_is_fnmatch = apr_fnmatch_test(conf->d) != 0;
2351 ap_add_file_conf(cmd->pool, (core_dir_config *)mconfig, new_file_conf);
2354 return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
2355 "> arguments not (yet) supported.", NULL);
2358 cmd->path = old_path;
2359 cmd->override = old_overrides;
2364 #define COND_IF ((void *)1)
2365 #define COND_ELSE ((void *)2)
2366 #define COND_ELSEIF ((void *)3)
2368 static const char *ifsection(cmd_parms *cmd, void *mconfig, const char *arg)
2371 const char *endp = ap_strrchr_c(arg, '>');
2372 int old_overrides = cmd->override;
2373 char *old_path = cmd->path;
2374 core_dir_config *conf;
2375 const command_rec *thiscmd = cmd->cmd;
2376 ap_conf_vector_t *new_if_conf = ap_create_per_dir_config(cmd->pool);
2377 const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
2378 const char *condition;
2379 const char *expr_err;
2386 return unclosed_directive(cmd);
2389 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2392 * Set a dummy value so that other directives notice that they are inside
2396 /* Only if not an .htaccess file */
2398 cmd->override = OR_ALL|ACCESS_CONF;
2401 /* initialize our config and fetch it */
2402 conf = ap_set_config_vectors(cmd->server, new_if_conf, cmd->path,
2403 &core_module, cmd->pool);
2405 if (cmd->cmd->cmd_data == COND_IF)
2406 conf->condition_ifelse = AP_CONDITION_IF;
2407 else if (cmd->cmd->cmd_data == COND_ELSEIF)
2408 conf->condition_ifelse = AP_CONDITION_ELSEIF;
2409 else if (cmd->cmd->cmd_data == COND_ELSE)
2410 conf->condition_ifelse = AP_CONDITION_ELSE;
2414 if (conf->condition_ifelse == AP_CONDITION_ELSE) {
2416 return "<Else> does not take an argument";
2420 return missing_container_arg(cmd);
2421 condition = ap_getword_conf(cmd->pool, &arg);
2422 conf->condition = ap_expr_parse_cmd(cmd, condition, 0, &expr_err, NULL);
2424 return apr_psprintf(cmd->pool, "Cannot parse condition clause: %s",
2428 errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_if_conf);
2432 conf->d = cmd->path;
2433 conf->d_is_fnmatch = 0;
2436 errmsg = ap_add_if_conf(cmd->pool, (core_dir_config *)mconfig, new_if_conf);
2441 return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
2442 "> arguments not supported.", NULL);
2445 cmd->path = old_path;
2446 cmd->override = old_overrides;
2451 static module *find_module(server_rec *s, const char *name)
2453 module *found = ap_find_linked_module(name);
2455 /* search prelinked stuff */
2457 ap_module_symbol_t *current = ap_prelinked_module_symbols;
2459 for (; current->name; ++current) {
2460 if (!strcmp(current->name, name)) {
2461 found = current->modp;
2467 /* search dynamic stuff */
2469 APR_OPTIONAL_FN_TYPE(ap_find_loaded_module_symbol) *check_symbol =
2470 APR_RETRIEVE_OPTIONAL_FN(ap_find_loaded_module_symbol);
2474 * There are two phases where calling ap_find_loaded_module_symbol
2477 * During reading of the config, ap_server_conf is invalid but s
2478 * points to the main server config, if passed from cmd->server
2479 * of an EXEC_ON_READ directive.
2481 * During config parsing, s may be a virtual host that would cause
2482 * a segfault in mod_so if passed to ap_find_loaded_module_symbol,
2483 * because mod_so's server config for vhosts is initialized later.
2484 * But ap_server_conf is already set at this time.
2486 * Therefore we use s if it is not virtual and ap_server_conf if
2489 found = check_symbol(s->is_virtual ? ap_server_conf : s, name);
2497 static const char *start_ifmod(cmd_parms *cmd, void *mconfig, const char *arg)
2499 const char *endp = ap_strrchr_c(arg, '>');
2500 int not = (arg[0] == '!');
2504 return unclosed_directive(cmd);
2507 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2514 return missing_container_arg(cmd);
2517 found = find_module(cmd->server, arg);
2519 if ((!not && found) || (not && !found)) {
2520 ap_directive_t *parent = NULL;
2521 ap_directive_t *current = NULL;
2524 retval = ap_build_cont_config(cmd->pool, cmd->temp_pool, cmd,
2525 ¤t, &parent, "<IfModule");
2526 *(ap_directive_t **)mconfig = current;
2530 *(ap_directive_t **)mconfig = NULL;
2531 return ap_soak_end_container(cmd, "<IfModule");
2535 AP_DECLARE(int) ap_exists_config_define(const char *name)
2540 defines = (char **)ap_server_config_defines->elts;
2541 for (i = 0; i < ap_server_config_defines->nelts; i++) {
2542 if (strcmp(defines[i], name) == 0) {
2550 static const char *start_ifdefine(cmd_parms *cmd, void *dummy, const char *arg)
2556 endp = ap_strrchr_c(arg, '>');
2558 return unclosed_directive(cmd);
2561 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2563 if (arg[0] == '!') {
2569 return missing_container_arg(cmd);
2572 defined = ap_exists_config_define(arg);
2573 if ((!not && defined) || (not && !defined)) {
2574 ap_directive_t *parent = NULL;
2575 ap_directive_t *current = NULL;
2578 retval = ap_build_cont_config(cmd->pool, cmd->temp_pool, cmd,
2579 ¤t, &parent, "<IfDefine");
2580 *(ap_directive_t **)dummy = current;
2584 *(ap_directive_t **)dummy = NULL;
2585 return ap_soak_end_container(cmd, "<IfDefine");
2589 /* httpd.conf commands... beginning with the <VirtualHost> business */
2591 static const char *virtualhost_section(cmd_parms *cmd, void *dummy,
2594 server_rec *main_server = cmd->server, *s;
2596 const char *endp = ap_strrchr_c(arg, '>');
2597 apr_pool_t *p = cmd->pool;
2599 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2605 return unclosed_directive(cmd);
2608 arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
2611 return missing_container_arg(cmd);
2614 /* FIXME: There's another feature waiting to happen here -- since you
2615 can now put multiple addresses/names on a single <VirtualHost>
2616 you might want to use it to group common definitions and then
2617 define other "subhosts" with their individual differences. But
2618 personally I'd rather just do it with a macro preprocessor. -djg */
2619 if (main_server->is_virtual) {
2620 return "<VirtualHost> doesn't nest!";
2623 errmsg = ap_init_virtual_host(p, arg, main_server, &s);
2628 s->next = main_server->next;
2629 main_server->next = s;
2631 s->defn_name = cmd->directive->filename;
2632 s->defn_line_number = cmd->directive->line_num;
2636 errmsg = ap_walk_config(cmd->directive->first_child, cmd,
2637 s->lookup_defaults);
2639 cmd->server = main_server;
2644 static const char *set_server_alias(cmd_parms *cmd, void *dummy,
2647 if (!cmd->server->names) {
2648 return "ServerAlias only used in <VirtualHost>";
2652 char **item, *name = ap_getword_conf(cmd->pool, &arg);
2654 if (ap_is_matchexp(name)) {
2655 item = (char **)apr_array_push(cmd->server->wild_names);
2658 item = (char **)apr_array_push(cmd->server->names);
2667 static const char *set_accf_map(cmd_parms *cmd, void *dummy,
2668 const char *iproto, const char* iaccf)
2670 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2671 core_server_config *conf =
2672 ap_get_core_module_config(cmd->server->module_config);
2679 proto = apr_pstrdup(cmd->pool, iproto);
2680 ap_str_tolower(proto);
2681 accf = apr_pstrdup(cmd->pool, iaccf);
2682 ap_str_tolower(accf);
2683 apr_table_setn(conf->accf_map, proto, accf);
2688 AP_DECLARE(const char*) ap_get_server_protocol(server_rec* s)
2690 core_server_config *conf = ap_get_core_module_config(s->module_config);
2691 return conf->protocol;
2694 AP_DECLARE(void) ap_set_server_protocol(server_rec* s, const char* proto)
2696 core_server_config *conf = ap_get_core_module_config(s->module_config);
2697 conf->protocol = proto;
2700 static const char *set_protocol(cmd_parms *cmd, void *dummy,
2703 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2704 core_server_config *conf =
2705 ap_get_core_module_config(cmd->server->module_config);
2712 proto = apr_pstrdup(cmd->pool, arg);
2713 ap_str_tolower(proto);
2714 conf->protocol = proto;
2719 static const char *set_server_string_slot(cmd_parms *cmd, void *dummy,
2722 /* This one's pretty generic... */
2724 int offset = (int)(long)cmd->info;
2725 char *struct_ptr = (char *)cmd->server;
2727 const char *err = ap_check_cmd_context(cmd,
2728 NOT_IN_DIR_LOC_FILE);
2733 *(const char **)(struct_ptr + offset) = arg;
2738 * The ServerName directive takes one argument with format
2739 * [scheme://]fully-qualified-domain-name[:port], for instance
2740 * ServerName www.example.com
2741 * ServerName www.example.com:80
2742 * ServerName https://www.example.com:443
2745 static const char *server_hostname_port(cmd_parms *cmd, void *dummy, const char *arg)
2747 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2748 const char *portstr, *part;
2756 if (apr_fnmatch_test(arg))
2757 return apr_pstrcat(cmd->temp_pool, "Invalid ServerName \"", arg,
2758 "\" use ServerAlias to set multiple server names.", NULL);
2760 part = ap_strstr_c(arg, "://");
2763 scheme = apr_pstrndup(cmd->pool, arg, part - arg);
2764 ap_str_tolower(scheme);
2765 cmd->server->server_scheme = (const char *)scheme;
2771 portstr = ap_strchr_c(part, ':');
2773 cmd->server->server_hostname = apr_pstrndup(cmd->pool, part,
2776 port = atoi(portstr);
2777 if (port <= 0 || port >= 65536) { /* 65536 == 1<<16 */
2778 return apr_pstrcat(cmd->temp_pool, "The port number \"", arg,
2779 "\" is outside the appropriate range "
2780 "(i.e., 1..65535).", NULL);
2784 cmd->server->server_hostname = apr_pstrdup(cmd->pool, part);
2788 cmd->server->port = port;
2792 static const char *set_signature_flag(cmd_parms *cmd, void *d_,
2795 core_dir_config *d = d_;
2797 if (strcasecmp(arg, "On") == 0) {
2798 d->server_signature = srv_sig_on;
2800 else if (strcasecmp(arg, "Off") == 0) {
2801 d->server_signature = srv_sig_off;
2803 else if (strcasecmp(arg, "EMail") == 0) {
2804 d->server_signature = srv_sig_withmail;
2807 return "ServerSignature: use one of: off | on | email";
2813 static const char *set_server_root(cmd_parms *cmd, void *dummy,
2816 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2822 if ((apr_filepath_merge((char**)&ap_server_root, NULL, arg,
2823 APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS)
2824 || !ap_is_directory(cmd->temp_pool, ap_server_root)) {
2825 return "ServerRoot must be a valid directory";
2831 static const char *set_runtime_dir(cmd_parms *cmd, void *dummy, const char *arg)
2833 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2839 if ((apr_filepath_merge((char**)&ap_runtime_dir, NULL,
2840 ap_server_root_relative(cmd->pool, arg),
2841 APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS)
2842 || !ap_is_directory(cmd->temp_pool, ap_runtime_dir)) {
2843 return "DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot";
2849 static const char *set_timeout(cmd_parms *cmd, void *dummy, const char *arg)
2851 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2857 cmd->server->timeout = apr_time_from_sec(atoi(arg));
2861 static const char *set_allow2f(cmd_parms *cmd, void *d_, const char *arg)
2863 core_dir_config *d = d_;
2865 if (0 == strcasecmp(arg, "on")) {
2866 d->allow_encoded_slashes = 1;
2867 d->decode_encoded_slashes = 1; /* for compatibility with 2.0 & 2.2 */
2868 } else if (0 == strcasecmp(arg, "off")) {
2869 d->allow_encoded_slashes = 0;
2870 d->decode_encoded_slashes = 0;
2871 } else if (0 == strcasecmp(arg, "nodecode")) {
2872 d->allow_encoded_slashes = 1;
2873 d->decode_encoded_slashes = 0;
2875 return apr_pstrcat(cmd->pool,
2876 cmd->cmd->name, " must be On, Off, or NoDecode",
2882 static const char *set_hostname_lookups(cmd_parms *cmd, void *d_,
2885 core_dir_config *d = d_;
2887 if (!strcasecmp(arg, "on")) {
2888 d->hostname_lookups = HOSTNAME_LOOKUP_ON;
2890 else if (!strcasecmp(arg, "off")) {
2891 d->hostname_lookups = HOSTNAME_LOOKUP_OFF;
2893 else if (!strcasecmp(arg, "double")) {
2894 d->hostname_lookups = HOSTNAME_LOOKUP_DOUBLE;
2897 return "parameter must be 'on', 'off', or 'double'";
2903 static const char *set_serverpath(cmd_parms *cmd, void *dummy,
2906 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
2912 cmd->server->path = arg;
2913 cmd->server->pathlen = (int)strlen(arg);
2917 static const char *set_content_md5(cmd_parms *cmd, void *d_, int arg)
2919 core_dir_config *d = d_;
2921 d->content_md5 = arg ? AP_CONTENT_MD5_ON : AP_CONTENT_MD5_OFF;
2925 static const char *set_accept_path_info(cmd_parms *cmd, void *d_, const char *arg)
2927 core_dir_config *d = d_;
2929 if (strcasecmp(arg, "on") == 0) {
2930 d->accept_path_info = AP_REQ_ACCEPT_PATH_INFO;
2932 else if (strcasecmp(arg, "off") == 0) {
2933 d->accept_path_info = AP_REQ_REJECT_PATH_INFO;
2935 else if (strcasecmp(arg, "default") == 0) {
2936 d->accept_path_info = AP_REQ_DEFAULT_PATH_INFO;
2939 return "AcceptPathInfo must be set to on, off or default";
2945 static const char *set_use_canonical_name(cmd_parms *cmd, void *d_,
2948 core_dir_config *d = d_;
2950 if (strcasecmp(arg, "on") == 0) {
2951 d->use_canonical_name = USE_CANONICAL_NAME_ON;
2953 else if (strcasecmp(arg, "off") == 0) {
2954 d->use_canonical_name = USE_CANONICAL_NAME_OFF;
2956 else if (strcasecmp(arg, "dns") == 0) {
2957 d->use_canonical_name = USE_CANONICAL_NAME_DNS;
2960 return "parameter must be 'on', 'off', or 'dns'";
2966 static const char *set_use_canonical_phys_port(cmd_parms *cmd, void *d_,
2969 core_dir_config *d = d_;
2971 if (strcasecmp(arg, "on") == 0) {
2972 d->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_ON;
2974 else if (strcasecmp(arg, "off") == 0) {
2975 d->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_OFF;
2978 return "parameter must be 'on' or 'off'";
2984 static const char *include_config (cmd_parms *cmd, void *dummy,
2987 ap_directive_t *conftree = NULL;
2988 const char *conffile, *error;
2989 unsigned *recursion;
2990 int optional = cmd->cmd->cmd_data ? 1 : 0;
2993 apr_pool_userdata_get(&data, "ap_include_sentinel", cmd->pool);
2998 data = recursion = apr_palloc(cmd->pool, sizeof(*recursion));
3000 apr_pool_userdata_setn(data, "ap_include_sentinel", NULL, cmd->pool);
3003 if (++*recursion > AP_MAX_INCLUDE_DEPTH) {
3005 return apr_psprintf(cmd->pool, "Exceeded maximum include depth of %u, "
3006 "There appears to be a recursion.",
3007 AP_MAX_INCLUDE_DEPTH);
3010 conffile = ap_server_root_relative(cmd->pool, name);
3013 return apr_pstrcat(cmd->pool, "Invalid Include path ",
3017 error = ap_process_fnmatch_configs(cmd->server, conffile, &conftree,
3018 cmd->pool, cmd->temp_pool,
3025 *(ap_directive_t **)dummy = conftree;
3027 /* recursion level done */
3035 static const char *set_loglevel(cmd_parms *cmd, void *config_, const char *arg_)
3040 char *arg = apr_pstrdup(cmd->temp_pool, arg_);
3041 struct ap_logconf *log;
3045 core_dir_config *dconf = config_;
3047 dconf->log = ap_new_log_config(cmd->pool, NULL);
3052 log = &cmd->server->log;
3056 return "LogLevel requires level keyword or module loglevel specifier";
3058 level_str = ap_strrchr(arg, ':');
3060 if (level_str == NULL) {
3061 err = ap_parse_log_level(arg, &log->level);
3064 ap_reset_module_loglevels(log, APLOG_NO_MODULE);
3065 ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, cmd->server,
3066 "Setting LogLevel for all modules to %s", arg);
3070 *level_str++ = '\0';
3072 return apr_psprintf(cmd->temp_pool, "Module specifier '%s' must be "
3073 "followed by a log level keyword", arg);
3076 err = ap_parse_log_level(level_str, &level);
3078 return apr_psprintf(cmd->temp_pool, "%s:%s: %s", arg, level_str, err);
3080 if ((module = find_module(cmd->server, arg)) == NULL) {
3081 char *name = apr_psprintf(cmd->temp_pool, "%s_module", arg);
3082 ap_log_error(APLOG_MARK, APLOG_TRACE6, 0, cmd->server,
3083 "Cannot find module '%s', trying '%s'", arg, name);
3084 module = find_module(cmd->server, name);
3087 if (module == NULL) {
3088 return apr_psprintf(cmd->temp_pool, "Cannot find module %s", arg);
3091 ap_set_module_loglevel(cmd->pool, log, module->module_index, level);
3092 ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, cmd->server,
3093 "Setting LogLevel for module %s to %s", module->name,
3099 AP_DECLARE(const char *) ap_psignature(const char *prefix, request_rec *r)
3102 core_dir_config *conf;
3104 conf = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
3105 if ((conf->server_signature == srv_sig_off)
3106 || (conf->server_signature == srv_sig_unset)) {
3110 apr_snprintf(sport, sizeof sport, "%u", (unsigned) ap_get_server_port(r));
3112 if (conf->server_signature == srv_sig_withmail) {
3113 return apr_pstrcat(r->pool, prefix, "<address>",
3114 ap_get_server_banner(),
3115 " Server at <a href=\"",
3116 ap_is_url(r->server->server_admin) ? "" : "mailto:",
3117 ap_escape_html(r->pool, r->server->server_admin),
3119 ap_escape_html(r->pool, ap_get_server_name(r)),
3120 "</a> Port ", sport,
3121 "</address>\n", NULL);
3124 return apr_pstrcat(r->pool, prefix, "<address>", ap_get_server_banner(),
3126 ap_escape_html(r->pool, ap_get_server_name(r)),
3128 "</address>\n", NULL);
3132 * Handle a request to include the server's OS platform in the Server
3133 * response header field (the ServerTokens directive). Unfortunately
3134 * this requires a new global in order to communicate the setting back to
3135 * http_main so it can insert the information in the right place in the
3139 static char *server_banner = NULL;
3140 static int banner_locked = 0;
3141 static const char *server_description = NULL;
3143 enum server_token_type {
3144 SrvTk_MAJOR, /* eg: Apache/2 */
3145 SrvTk_MINOR, /* eg. Apache/2.0 */
3146 SrvTk_MINIMAL, /* eg: Apache/2.0.41 */
3147 SrvTk_OS, /* eg: Apache/2.0.41 (UNIX) */
3148 SrvTk_FULL, /* eg: Apache/2.0.41 (UNIX) PHP/4.2.2 FooBar/1.2b */
3149 SrvTk_PRODUCT_ONLY /* eg: Apache */
3151 static enum server_token_type ap_server_tokens = SrvTk_FULL;
3153 static apr_status_t reset_banner(void *dummy)
3156 ap_server_tokens = SrvTk_FULL;
3157 server_banner = NULL;
3158 server_description = NULL;
3162 AP_DECLARE(void) ap_get_server_revision(ap_version_t *version)
3164 version->major = AP_SERVER_MAJORVERSION_NUMBER;
3165 version->minor = AP_SERVER_MINORVERSION_NUMBER;
3166 version->patch = AP_SERVER_PATCHLEVEL_NUMBER;
3167 version->add_string = AP_SERVER_ADD_STRING;
3170 AP_DECLARE(const char *) ap_get_server_description(void)
3172 return server_description ? server_description :
3173 AP_SERVER_BASEVERSION " (" PLATFORM ")";
3176 AP_DECLARE(const char *) ap_get_server_banner(void)
3178 return server_banner ? server_banner : AP_SERVER_BASEVERSION;
3181 AP_DECLARE(void) ap_add_version_component(apr_pool_t *pconf, const char *component)
3183 if (! banner_locked) {
3185 * If the version string is null, register our cleanup to reset the
3186 * pointer on pool destruction. We also know that, if NULL,
3187 * we are adding the original SERVER_BASEVERSION string.
3189 if (server_banner == NULL) {
3190 apr_pool_cleanup_register(pconf, NULL, reset_banner,
3191 apr_pool_cleanup_null);
3192 server_banner = apr_pstrdup(pconf, component);
3196 * Tack the given component identifier to the end of
3197 * the existing string.
3199 server_banner = apr_pstrcat(pconf, server_banner, " ",
3203 server_description = apr_pstrcat(pconf, server_description, " ",
3208 * This routine adds the real server base identity to the banner string,
3209 * and then locks out changes until the next reconfig.
3211 static void set_banner(apr_pool_t *pconf)
3213 if (ap_server_tokens == SrvTk_PRODUCT_ONLY) {
3214 ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT);
3216 else if (ap_server_tokens == SrvTk_MINIMAL) {
3217 ap_add_version_component(pconf, AP_SERVER_BASEVERSION);
3219 else if (ap_server_tokens == SrvTk_MINOR) {
3220 ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT "/" AP_SERVER_MINORREVISION);
3222 else if (ap_server_tokens == SrvTk_MAJOR) {
3223 ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT "/" AP_SERVER_MAJORVERSION);
3226 ap_add_version_component(pconf, AP_SERVER_BASEVERSION " (" PLATFORM ")");
3230 * Lock the server_banner string if we're not displaying
3231 * the full set of tokens
3233 if (ap_server_tokens != SrvTk_FULL) {
3236 server_description = AP_SERVER_BASEVERSION " (" PLATFORM ")";
3239 static const char *set_serv_tokens(cmd_parms *cmd, void *dummy,
3240 const char *arg1, const char *arg2)
3242 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
3248 if (!strcasecmp(arg1, "OS")) {
3249 ap_server_tokens = SrvTk_OS;
3251 else if (!strcasecmp(arg1, "Min") || !strcasecmp(arg1, "Minimal")) {
3252 ap_server_tokens = SrvTk_MINIMAL;
3254 else if (!strcasecmp(arg1, "Major")) {
3255 ap_server_tokens = SrvTk_MAJOR;
3257 else if (!strcasecmp(arg1, "Minor") ) {
3258 ap_server_tokens = SrvTk_MINOR;
3260 else if (!strcasecmp(arg1, "Prod") || !strcasecmp(arg1, "ProductOnly")) {
3261 ap_server_tokens = SrvTk_PRODUCT_ONLY;
3263 else if (!strcasecmp(arg1, "Full")) {
3264 ap_server_tokens = SrvTk_FULL;
3267 return "ServerTokens takes 1 argument, 'Prod', 'Major', 'Minor', 'Min', 'OS', or 'Full'";
3273 static const char *set_limit_req_line(cmd_parms *cmd, void *dummy,
3276 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
3285 return apr_pstrcat(cmd->temp_pool, "LimitRequestLine \"", arg,
3286 "\" must be a non-negative integer", NULL);
3289 cmd->server->limit_req_line = lim;
3293 static const char *set_limit_req_fieldsize(cmd_parms *cmd, void *dummy,
3296 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
3305 return apr_pstrcat(cmd->temp_pool, "LimitRequestFieldsize \"", arg,
3306 "\" must be a non-negative integer",
3310 cmd->server->limit_req_fieldsize = lim;
3314 static const char *set_limit_req_fields(cmd_parms *cmd, void *dummy,
3317 const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_LOC_FILE);
3326 return apr_pstrcat(cmd->temp_pool, "LimitRequestFields \"", arg,
3327 "\" must be a non-negative integer (0 = no limit)",
3331 cmd->server->limit_req_fields = lim;
3335 static const char *set_limit_req_body(cmd_parms *cmd, void *conf_,
3338 core_dir_config *conf = conf_;
3341 if (APR_SUCCESS != apr_strtoff(&conf->limit_req_body, arg, &errp, 10)) {
3342 return "LimitRequestBody argument is not parsable.";
3344 if (*errp || conf->limit_req_body < 0) {
3345 return "LimitRequestBody requires a non-negative integer.";
3351 static const char *set_limit_xml_req_body(cmd_parms *cmd, void *conf_,
3354 core_dir_config *conf = conf_;
3356 conf->limit_xml_body = atol(arg);
3357 if (conf->limit_xml_body < 0)
3358 return "LimitXMLRequestBody requires a non-negative integer.";
3363 static const char *set_max_ranges(cmd_parms *cmd, void *conf_, const char *arg)
3365 core_dir_config *conf = conf_;
3368 if (!strcasecmp(arg, "none")) {
3369 val = AP_MAXRANGES_NORANGES;
3371 else if (!strcasecmp(arg, "default")) {
3372 val = AP_MAXRANGES_DEFAULT;
3374 else if (!strcasecmp(arg, "unlimited")) {
3375 val = AP_MAXRANGES_UNLIMITED;
3380 return "MaxRanges requires 'none', 'default', 'unlimited' or "
3381 "a positive integer";
3384 conf->max_ranges = val;
3389 static const char *set_max_overlaps(cmd_parms *cmd, void *conf_, const char *arg)
3391 core_dir_config *conf = conf_;
3394 if (!strcasecmp(arg, "none")) {
3395 val = AP_MAXRANGES_NORANGES;
3397 else if (!strcasecmp(arg, "default")) {
3398 val = AP_MAXRANGES_DEFAULT;
3400 else if (!strcasecmp(arg, "unlimited")) {
3401 val = AP_MAXRANGES_UNLIMITED;
3406 return "MaxRangeOverlaps requires 'none', 'default', 'unlimited' or "
3407 "a positive integer";
3410 conf->max_overlaps = val;
3415 static const char *set_max_reversals(cmd_parms *cmd, void *conf_, const char *arg)
3417 core_dir_config *conf = conf_;
3420 if (!strcasecmp(arg, "none")) {
3421 val = AP_MAXRANGES_NORANGES;
3423 else if (!strcasecmp(arg, "default")) {
3424 val = AP_MAXRANGES_DEFAULT;
3426 else if (!strcasecmp(arg, "unlimited")) {
3427 val = AP_MAXRANGES_UNLIMITED;
3432 return "MaxRangeReversals requires 'none', 'default', 'unlimited' or "
3433 "a positive integer";
3436 conf->max_reversals = val;
3441 AP_DECLARE(apr_size_t) ap_get_limit_xml_body(const request_rec *r)
3443 core_dir_config *conf;
3445 conf = ap_get_core_module_config(r->per_dir_config);
3446 if (conf->limit_xml_body == AP_LIMIT_UNSET)
3447 return AP_DEFAULT_LIMIT_XML_BODY;
3449 return (apr_size_t)conf->limit_xml_body;
3452 #if !defined (RLIMIT_CPU) || !(defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS)) || !defined (RLIMIT_NPROC)
3453 static const char *no_set_limit(cmd_parms *cmd, void *conf_,
3454 const char *arg, const char *arg2)
3456 ap_log_error(APLOG_MARK, APLOG_ERR, 0, cmd->server, APLOGNO(00118)
3457 "%s not supported on this platform", cmd->cmd->name);
3464 static const char *set_limit_cpu(cmd_parms *cmd, void *conf_,
3465 const char *arg, const char *arg2)
3467 core_dir_config *conf = conf_;
3469 ap_unixd_set_rlimit(cmd, &conf->limit_cpu, arg, arg2, RLIMIT_CPU);
3474 #if defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS)
3475 static const char *set_limit_mem(cmd_parms *cmd, void *conf_,
3476 const char *arg, const char * arg2)
3478 core_dir_config *conf = conf_;
3480 #if defined(RLIMIT_AS)
3481 ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2 ,RLIMIT_AS);
3482 #elif defined(RLIMIT_DATA)
3483 ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2, RLIMIT_DATA);
3484 #elif defined(RLIMIT_VMEM)
3485 ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2, RLIMIT_VMEM);
3493 static const char *set_limit_nproc(cmd_parms *cmd, void *conf_,
3494 const char *arg, const char * arg2)
3496 core_dir_config *conf = conf_;
3498 ap_unixd_set_rlimit(cmd, &conf->limit_nproc, arg, arg2, RLIMIT_NPROC);
3503 static const char *set_recursion_limit(cmd_parms *cmd, void *dummy,
3504 const char *arg1, const char *arg2)
3506 core_server_config *conf =
3507 ap_get_core_module_config(cmd->server->module_config);
3508 int limit = atoi(arg1);
3511 return "The recursion limit must be greater than zero.";
3514 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00119)
3515 "Limiting internal redirects to very low numbers may "
3516 "cause normal requests to fail.");
3519 conf->redirect_limit = limit;
3525 return "The recursion limit must be greater than zero.";
3528 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00120)
3529 "Limiting the subrequest depth to a very low level may"
3530 " cause normal requests to fail.");
3534 conf->subreq_limit = limit;
3539 static void log_backtrace(const request_rec *r)
3541 const request_rec *top = r;
3543 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00121)
3544 "r->uri = %s", r->uri ? r->uri : "(unexpectedly NULL)");
3546 while (top && (top->prev || top->main)) {
3549 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00122)
3550 "redirected from r->uri = %s",
3551 top->uri ? top->uri : "(unexpectedly NULL)");
3554 if (!top->prev && top->main) {
3556 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00123)
3557 "subrequested from r->uri = %s",
3558 top->uri ? top->uri : "(unexpectedly NULL)");
3564 * check whether redirect limit is reached
3566 AP_DECLARE(int) ap_is_recursion_limit_exceeded(const request_rec *r)
3568 core_server_config *conf =
3569 ap_get_core_module_config(r->server->module_config);
3570 const request_rec *top = r;
3571 int redirects = 0, subreqs = 0;
3572 int rlimit = conf->redirect_limit
3573 ? conf->redirect_limit
3574 : AP_DEFAULT_MAX_INTERNAL_REDIRECTS;
3575 int slimit = conf->subreq_limit
3576 ? conf->subreq_limit
3577 : AP_DEFAULT_MAX_SUBREQ_DEPTH;
3580 while (top->prev || top->main) {
3582 if (++redirects >= rlimit) {
3583 /* uuh, too much. */
3584 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00124)
3585 "Request exceeded the limit of %d internal "
3586 "redirects due to probable configuration error. "
3587 "Use 'LimitInternalRecursion' to increase the "
3588 "limit if necessary. Use 'LogLevel debug' to get "
3589 "a backtrace.", rlimit);
3591 /* post backtrace */
3594 /* return failure */
3601 if (!top->prev && top->main) {
3602 if (++subreqs >= slimit) {
3603 /* uuh, too much. */
3604 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00125)
3605 "Request exceeded the limit of %d subrequest "
3606 "nesting levels due to probable configuration "
3607 "error. Use 'LimitInternalRecursion' to increase "
3608 "the limit if necessary. Use 'LogLevel debug' to "
3609 "get a backtrace.", slimit);
3611 /* post backtrace */
3614 /* return failure */
3622 /* recursion state: ok */
3626 static const char *set_trace_enable(cmd_parms *cmd, void *dummy,
3629 core_server_config *conf =
3630 ap_get_core_module_config(cmd->server->module_config);
3632 if (strcasecmp(arg1, "on") == 0) {
3633 conf->trace_enable = AP_TRACE_ENABLE;
3635 else if (strcasecmp(arg1, "off") == 0) {
3636 conf->trace_enable = AP_TRACE_DISABLE;
3638 else if (strcasecmp(arg1, "extended") == 0) {
3639 conf->trace_enable = AP_TRACE_EXTENDED;
3642 return "TraceEnable must be one of 'on', 'off', or 'extended'";
3648 static const char *set_http_protocol(cmd_parms *cmd, void *dummy,
3651 core_server_config *conf;
3652 conf = ap_get_core_module_config(cmd->server->module_config);
3653 if (apr_isdigit(arg[0])) {
3654 unsigned short min_major, min_minor, max_major, max_minor;
3655 unsigned int min, max;
3658 if (sscanf(arg, "%hu.%hu-%hu.%hu%c", &min_major, &min_minor,
3659 &max_major, &max_minor, &ch) == 4) {
3661 else if (sscanf(arg, "%hu.%hu%c", &min_major, &min_minor, &ch) == 2) {
3662 max_major = min_major;
3663 max_minor = min_minor;
3666 return "Protocol version must be in format a.b or a.b-c.d";
3668 if ( HTTP_VERSION(0, min_minor) >= HTTP_VERSION(1,0)
3669 || HTTP_VERSION(0, max_minor) >= HTTP_VERSION(1,0)) {
3670 return "HTTP minor version may not be more than 999";
3672 min = HTTP_VERSION(min_major, min_minor);
3673 max = HTTP_VERSION(max_major, max_minor);
3674 if (min > APR_UINT16_MAX || max > APR_UINT16_MAX)
3675 return "HTTP major version may not be more than 64";
3677 return "HTTP version range must be min-max";
3678 /* 0 is used for "unset", so make sure the min is larger */
3679 if (min < HTTP_VERSION(0,9))
3680 min = HTTP_VERSION(0,9);
3681 conf->min_http_version = min;
3682 conf->max_http_version = max;
3685 return "Valid arguments are a version number (e.g. '1.1')"
3686 "or a version range (e.g. '1.0-9.9')";
3691 static const char *set_http_method(cmd_parms *cmd, void *conf, const char *arg)
3693 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
3696 ap_method_register(cmd->pool, arg);
3700 static apr_hash_t *errorlog_hash;
3702 static int log_constant_item(const ap_errorlog_info *info, const char *arg,
3703 char *buf, int buflen)
3705 char *end = apr_cpystrn(buf, arg, buflen);
3709 static char *parse_errorlog_misc_string(apr_pool_t *p,
3710 ap_errorlog_format_item *it,
3714 char scratch[MAX_STRING_LEN];
3717 * non-leading white space terminates this string to allow the next field
3718 * separator to be inserted
3722 it->func = log_constant_item;
3725 while (*s && *s != '%' && (*s != ' ' || at_start) && d < scratch + MAX_STRING_LEN) {
3748 /* handle end of string */
3752 /* copy next char verbatim */
3759 it->arg = apr_pstrdup(p, scratch);
3765 static char *parse_errorlog_item(apr_pool_t *p, ap_errorlog_format_item *it,
3768 const char *s = *sa;
3769 ap_errorlog_handler *handler;
3774 it->flags |= AP_ERRORLOG_FLAG_FIELD_SEP;
3776 return parse_errorlog_misc_string(p, it, sa);
3782 /* percent-space (% ) is a field separator */
3783 it->flags |= AP_ERRORLOG_FLAG_FIELD_SEP;
3786 return parse_errorlog_item(p, it, sa);
3788 else if (*s == '%') {
3790 it->func = log_constant_item;
3799 it->arg = ap_getword(p, &s, '}');
3803 it->flags |= AP_ERRORLOG_FLAG_REQUIRED;
3807 it->flags |= AP_ERRORLOG_FLAG_NULL_AS_HYPHEN;
3820 while (apr_isdigit(*++s))
3821 i = i * 10 + (*s) - '0';
3822 it->min_loglevel = i;
3826 it->flags |= AP_ERRORLOG_FLAG_MESSAGE;
3830 handler = (ap_errorlog_handler *)apr_hash_get(errorlog_hash, s, 1);
3836 return apr_pstrcat(p, "Unrecognized error log format directive %",
3839 it->func = handler->func;
3845 return "Ran off end of error log format parsing args to some directive";
3848 static apr_array_header_t *parse_errorlog_string(apr_pool_t *p,
3853 apr_array_header_t *a = apr_array_make(p, 30,
3854 sizeof(ap_errorlog_format_item));
3856 int seen_msg_fmt = 0;
3859 ap_errorlog_format_item *item =
3860 (ap_errorlog_format_item *)apr_array_push(a);
3861 memset(item, 0, sizeof(*item));
3862 res = parse_errorlog_item(p, item, &s);
3867 if (item->flags & AP_ERRORLOG_FLAG_MESSAGE) {
3869 *err = "%M cannot be used in once-per-request or "
3870 "once-per-connection formats";
3875 if (is_main_fmt && item->flags & AP_ERRORLOG_FLAG_REQUIRED) {
3876 *err = "The '+' flag cannot be used in the main error log format";
3879 if (!is_main_fmt && item->min_loglevel) {
3880 *err = "The loglevel cannot be used as a condition in "
3881 "once-per-request or once-per-connection formats";
3884 if (item->min_loglevel > APLOG_TRACE8) {
3885 *err = "The specified loglevel modifier is out of range";
3890 if (is_main_fmt && !seen_msg_fmt) {
3891 *err = "main ErrorLogFormat must contain message format string '%M'";
3898 static const char *set_errorlog_format(cmd_parms *cmd, void *dummy,
3899 const char *arg1, const char *arg2)
3901 const char *err_string = NULL;
3902 core_server_config *conf =
3903 ap_get_core_module_config(cmd->server->module_config);
3906 conf->error_log_format = parse_errorlog_string(cmd->pool, arg1,
3909 else if (!strcasecmp(arg1, "connection")) {
3910 if (!conf->error_log_conn) {
3911 conf->error_log_conn = apr_array_make(cmd->pool, 5,
3912 sizeof(apr_array_header_t *));
3916 apr_array_header_t **e;
3917 e = (apr_array_header_t **) apr_array_push(conf->error_log_conn);
3918 *e = parse_errorlog_string(cmd->pool, arg2, &err_string, 0);
3921 else if (!strcasecmp(arg1, "request")) {
3922 if (!conf->error_log_req) {
3923 conf->error_log_req = apr_array_make(cmd->pool, 5,
3924 sizeof(apr_array_header_t *));
3928 apr_array_header_t **e;
3929 e = (apr_array_header_t **) apr_array_push(conf->error_log_req);
3930 *e = parse_errorlog_string(cmd->pool, arg2, &err_string, 0);
3934 err_string = "ErrorLogFormat type must be one of request, connection";
3940 AP_DECLARE(void) ap_register_errorlog_handler(apr_pool_t *p, char *tag,
3941 ap_errorlog_handler_fn_t *handler,
3944 ap_errorlog_handler *log_struct = apr_palloc(p, sizeof(*log_struct));
3945 log_struct->func = handler;
3946 log_struct->flags = flags;
3948 apr_hash_set(errorlog_hash, tag, 1, (const void *)log_struct);
3952 /* Note --- ErrorDocument will now work from .htaccess files.
3953 * The AllowOverride of Fileinfo allows webmasters to turn it off
3956 static const command_rec core_cmds[] = {
3958 /* Old access config file commands */
3960 AP_INIT_RAW_ARGS("<Directory", dirsection, NULL, RSRC_CONF,
3961 "Container for directives affecting resources located in the specified "
3963 AP_INIT_RAW_ARGS("<Location", urlsection, NULL, RSRC_CONF,
3964 "Container for directives affecting resources accessed through the "
3965 "specified URL paths"),
3966 AP_INIT_RAW_ARGS("<VirtualHost", virtualhost_section, NULL, RSRC_CONF,
3967 "Container to map directives to a particular virtual host, takes one or "
3968 "more host addresses"),
3969 AP_INIT_RAW_ARGS("<Files", filesection, NULL, OR_ALL,
3970 "Container for directives affecting files matching specified patterns"),
3971 AP_INIT_RAW_ARGS("<Limit", ap_limit_section, NULL, OR_LIMIT | OR_AUTHCFG,
3972 "Container for authentication directives when accessed using specified HTTP "
3974 AP_INIT_RAW_ARGS("<LimitExcept", ap_limit_section, (void*)1,
3975 OR_LIMIT | OR_AUTHCFG,
3976 "Container for authentication directives to be applied when any HTTP "
3977 "method other than those specified is used to access the resource"),
3978 AP_INIT_TAKE1("<IfModule", start_ifmod, NULL, EXEC_ON_READ | OR_ALL,
3979 "Container for directives based on existence of specified modules"),
3980 AP_INIT_TAKE1("<IfDefine", start_ifdefine, NULL, EXEC_ON_READ | OR_ALL,
3981 "Container for directives based on existence of command line defines"),
3982 AP_INIT_RAW_ARGS("<DirectoryMatch", dirsection, (void*)1, RSRC_CONF,
3983 "Container for directives affecting resources located in the "
3984 "specified directories"),
3985 AP_INIT_RAW_ARGS("<LocationMatch", urlsection, (void*)1, RSRC_CONF,
3986 "Container for directives affecting resources accessed through the "
3987 "specified URL paths"),
3988 AP_INIT_RAW_ARGS("<FilesMatch", filesection, (void*)1, OR_ALL,
3989 "Container for directives affecting files matching specified patterns"),
3991 AP_INIT_TAKE1("GprofDir", set_gprof_dir, NULL, RSRC_CONF,
3992 "Directory to plop gmon.out files"),
3994 AP_INIT_TAKE1("AddDefaultCharset", set_add_default_charset, NULL, OR_FILEINFO,
3995 "The name of the default charset to add to any Content-Type without one or 'Off' to disable"),
3996 AP_INIT_TAKE1("AcceptPathInfo", set_accept_path_info, NULL, OR_FILEINFO,
3997 "Set to on or off for PATH_INFO to be accepted by handlers, or default for the per-handler preference"),
3998 AP_INIT_TAKE12("Define", set_define, NULL, EXEC_ON_READ|ACCESS_CONF|RSRC_CONF,
3999 "Define a variable, optionally to a value. Same as passing -D to the command line."),
4000 AP_INIT_TAKE1("UnDefine", unset_define, NULL, EXEC_ON_READ|ACCESS_CONF|RSRC_CONF,
4001 "Undefine the existence of a variable. Undo a Define."),
4002 AP_INIT_RAW_ARGS("Error", generate_message, (void*) APLOG_ERR, OR_ALL,
4003 "Generate error message from within configuration."),
4004 AP_INIT_RAW_ARGS("Warning", generate_message, (void*) APLOG_WARNING, OR_ALL,
4005 "Generate warning message from within configuration."),
4006 AP_INIT_RAW_ARGS("<If", ifsection, COND_IF, OR_ALL,
4007 "Container for directives to be conditionally applied"),
4008 AP_INIT_RAW_ARGS("<ElseIf", ifsection, COND_ELSEIF, OR_ALL,
4009 "Container for directives to be conditionally applied"),
4010 AP_INIT_RAW_ARGS("<Else", ifsection, COND_ELSE, OR_ALL,
4011 "Container for directives to be conditionally applied"),
4013 /* Old resource config file commands */
4015 AP_INIT_RAW_ARGS("AccessFileName", set_access_name, NULL, RSRC_CONF,
4016 "Name(s) of per-directory config files (default: .htaccess)"),
4017 AP_INIT_TAKE1("DocumentRoot", set_document_root, NULL, RSRC_CONF,
4018 "Root directory of the document tree"),
4019 AP_INIT_TAKE2("ErrorDocument", set_error_document, NULL, OR_FILEINFO,
4020 "Change responses for HTTP errors"),
4021 AP_INIT_RAW_ARGS("AllowOverride", set_override, NULL, ACCESS_CONF,
4022 "Controls what groups of directives can be configured by per-directory "
4024 AP_INIT_TAKE_ARGV("AllowOverrideList", set_override_list, NULL, ACCESS_CONF,
4025 "Controls what individual directives can be configured by per-directory "
4027 AP_INIT_RAW_ARGS("Options", set_options, NULL, OR_OPTIONS,
4028 "Set a number of attributes for a given directory"),
4029 AP_INIT_TAKE1("DefaultType", set_default_type, NULL, OR_FILEINFO,
4030 "the default media type for otherwise untyped files (DEPRECATED)"),
4031 AP_INIT_RAW_ARGS("FileETag", set_etag_bits, NULL, OR_FILEINFO,
4032 "Specify components used to construct a file's ETag"),
4033 AP_INIT_TAKE1("EnableMMAP", set_enable_mmap, NULL, OR_FILEINFO,
4034 "Controls whether memory-mapping may be used to read files"),
4035 AP_INIT_TAKE1("EnableSendfile", set_enable_sendfile, NULL, OR_FILEINFO,
4036 "Controls whether sendfile may be used to transmit files"),
4038 /* Old server config file commands */
4040 AP_INIT_TAKE1("Protocol", set_protocol, NULL, RSRC_CONF,
4041 "Set the Protocol for httpd to use."),
4042 AP_INIT_TAKE2("AcceptFilter", set_accf_map, NULL, RSRC_CONF,
4043 "Set the Accept Filter to use for a protocol"),
4044 AP_INIT_TAKE1("Port", ap_set_deprecated, NULL, RSRC_CONF,
4045 "Port was replaced with Listen in Apache 2.0"),
4046 AP_INIT_TAKE1("HostnameLookups", set_hostname_lookups, NULL,
4047 ACCESS_CONF|RSRC_CONF,
4048 "\"on\" to enable, \"off\" to disable reverse DNS lookups, or \"double\" to "
4049 "enable double-reverse DNS lookups"),
4050 AP_INIT_TAKE1("ServerAdmin", set_server_string_slot,
4051 (void *)APR_OFFSETOF(server_rec, server_admin), RSRC_CONF,
4052 "The email address of the server administrator"),
4053 AP_INIT_TAKE1("ServerName", server_hostname_port, NULL, RSRC_CONF,
4054 "The hostname and port of the server"),
4055 AP_INIT_TAKE1("ServerSignature", set_signature_flag, NULL, OR_ALL,
4056 "En-/disable server signature (on|off|email)"),
4057 AP_INIT_TAKE1("ServerRoot", set_server_root, NULL, RSRC_CONF | EXEC_ON_READ,
4058 "Common directory of server-related files (logs, confs, etc.)"),
4059 AP_INIT_TAKE1("DefaultRuntimeDir", set_runtime_dir, NULL, RSRC_CONF | EXEC_ON_READ,
4060 "Common directory for run-time files (shared memory, locks, etc.)"),
4061 AP_INIT_TAKE1("ErrorLog", set_server_string_slot,
4062 (void *)APR_OFFSETOF(server_rec, error_fname), RSRC_CONF,
4063 "The filename of the error log"),
4064 AP_INIT_TAKE12("ErrorLogFormat", set_errorlog_format, NULL, RSRC_CONF,
4065 "Format string for the ErrorLog"),
4066 AP_INIT_RAW_ARGS("ServerAlias", set_server_alias, NULL, RSRC_CONF,
4067 "A name or names alternately used to access the server"),
4068 AP_INIT_TAKE1("ServerPath", set_serverpath, NULL, RSRC_CONF,
4069 "The pathname the server can be reached at"),
4070 AP_INIT_TAKE1("Timeout", set_timeout, NULL, RSRC_CONF,
4071 "Timeout duration (sec)"),
4072 AP_INIT_FLAG("ContentDigest", set_content_md5, NULL, OR_OPTIONS,
4073 "whether or not to send a Content-MD5 header with each request"),
4074 AP_INIT_TAKE1("UseCanonicalName", set_use_canonical_name, NULL,
4075 RSRC_CONF|ACCESS_CONF,
4076 "How to work out the ServerName : Port when constructing URLs"),
4077 AP_INIT_TAKE1("UseCanonicalPhysicalPort", set_use_canonical_phys_port, NULL,
4078 RSRC_CONF|ACCESS_CONF,
4079 "Whether to use the physical Port when constructing URLs"),
4080 /* TODO: RlimitFoo should all be part of mod_cgi, not in the core */
4081 /* TODO: ListenBacklog in MPM */
4082 AP_INIT_TAKE1("Include", include_config, NULL,
4083 (RSRC_CONF | ACCESS_CONF | EXEC_ON_READ),
4084 "Name(s) of the config file(s) to be included; fails if the wildcard does "
4085 "not match at least one file"),
4086 AP_INIT_TAKE1("IncludeOptional", include_config, (void*)1,
4087 (RSRC_CONF | ACCESS_CONF | EXEC_ON_READ),
4088 "Name or pattern of the config file(s) to be included; ignored if the file "
4089 "does not exist or the pattern does not match any files"),
4090 AP_INIT_ITERATE("LogLevel", set_loglevel, NULL, RSRC_CONF|ACCESS_CONF,
4091 "Level of verbosity in error logging"),
4092 AP_INIT_TAKE1("NameVirtualHost", ap_set_name_virtual_host, NULL, RSRC_CONF,
4093 "A numeric IP address:port, or the name of a host"),
4094 AP_INIT_TAKE12("ServerTokens", set_serv_tokens, NULL, RSRC_CONF,
4095 "Determine tokens displayed in the Server: header - Min(imal), "
4096 "Major, Minor, Prod, OS or Full"),
4097 AP_INIT_TAKE1("LimitRequestLine", set_limit_req_line, NULL, RSRC_CONF,
4098 "Limit on maximum size of an HTTP request line"),
4099 AP_INIT_TAKE1("LimitRequestFieldsize", set_limit_req_fieldsize, NULL,
4101 "Limit on maximum size of an HTTP request header field"),
4102 AP_INIT_TAKE1("LimitRequestFields", set_limit_req_fields, NULL, RSRC_CONF,
4103 "Limit (0 = unlimited) on max number of header fields in a request message"),
4104 AP_INIT_TAKE1("LimitRequestBody", set_limit_req_body,
4105 (void*)APR_OFFSETOF(core_dir_config, limit_req_body), OR_ALL,
4106 "Limit (in bytes) on maximum size of request message body"),
4107 AP_INIT_TAKE1("LimitXMLRequestBody", set_limit_xml_req_body, NULL, OR_ALL,
4108 "Limit (in bytes) on maximum size of an XML-based request "
4110 AP_INIT_RAW_ARGS("Mutex", ap_set_mutex, NULL, RSRC_CONF,
4111 "mutex (or \"default\") and mechanism"),
4113 AP_INIT_TAKE1("MaxRanges", set_max_ranges, NULL, RSRC_CONF|ACCESS_CONF,
4114 "Maximum number of Ranges in a request before returning the entire "
4115 "resource, or 0 for unlimited"),
4116 AP_INIT_TAKE1("MaxRangeOverlaps", set_max_overlaps, NULL, RSRC_CONF|ACCESS_CONF,
4117 "Maximum number of overlaps in Ranges in a request before returning the entire "
4118 "resource, or 0 for unlimited"),
4119 AP_INIT_TAKE1("MaxRangeReversals", set_max_reversals, NULL, RSRC_CONF|ACCESS_CONF,
4120 "Maximum number of reversals in Ranges in a request before returning the entire "
4121 "resource, or 0 for unlimited"),
4122 /* System Resource Controls */
4124 AP_INIT_TAKE12("RLimitCPU", set_limit_cpu,
4125 (void*)APR_OFFSETOF(core_dir_config, limit_cpu),
4126 OR_ALL, "Soft/hard limits for max CPU usage in seconds"),
4128 AP_INIT_TAKE12("RLimitCPU", no_set_limit, NULL,
4129 OR_ALL, "Soft/hard limits for max CPU usage in seconds"),
4131 #if defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined (RLIMIT_AS)
4132 AP_INIT_TAKE12("RLimitMEM", set_limit_mem,
4133 (void*)APR_OFFSETOF(core_dir_config, limit_mem),
4134 OR_ALL, "Soft/hard limits for max memory usage per process"),
4136 AP_INIT_TAKE12("RLimitMEM", no_set_limit, NULL,
4137 OR_ALL, "Soft/hard limits for max memory usage per process"),
4140 AP_INIT_TAKE12("RLimitNPROC", set_limit_nproc,
4141 (void*)APR_OFFSETOF(core_dir_config, limit_nproc),
4142 OR_ALL, "soft/hard limits for max number of processes per uid"),
4144 AP_INIT_TAKE12("RLimitNPROC", no_set_limit, NULL,
4145 OR_ALL, "soft/hard limits for max number of processes per uid"),
4148 /* internal recursion stopper */
4149 AP_INIT_TAKE12("LimitInternalRecursion", set_recursion_limit, NULL, RSRC_CONF,
4150 "maximum recursion depth of internal redirects and subrequests"),
4152 AP_INIT_TAKE1("ForceType", ap_set_string_slot_lower,
4153 (void *)APR_OFFSETOF(core_dir_config, mime_type), OR_FILEINFO,
4154 "a mime type that overrides other configured type"),
4155 AP_INIT_TAKE1("SetHandler", ap_set_string_slot_lower,
4156 (void *)APR_OFFSETOF(core_dir_config, handler), OR_FILEINFO,
4157 "a handler name that overrides any other configured handler"),
4158 AP_INIT_TAKE1("SetOutputFilter", ap_set_string_slot,
4159 (void *)APR_OFFSETOF(core_dir_config, output_filters), OR_FILEINFO,
4160 "filter (or ; delimited list of filters) to be run on the request content"),
4161 AP_INIT_TAKE1("SetInputFilter", ap_set_string_slot,
4162 (void *)APR_OFFSETOF(core_dir_config, input_filters), OR_FILEINFO,
4163 "filter (or ; delimited list of filters) to be run on the request body"),
4164 AP_INIT_TAKE1("AllowEncodedSlashes", set_allow2f, NULL, RSRC_CONF,
4165 "Allow URLs containing '/' encoded as '%2F'"),
4167 /* scoreboard.c directives */
4168 AP_INIT_TAKE1("ScoreBoardFile", ap_set_scoreboard, NULL, RSRC_CONF,
4169 "A file for Apache to maintain runtime process management information"),
4170 AP_INIT_FLAG("ExtendedStatus", ap_set_extended_status, NULL, RSRC_CONF,
4171 "\"On\" to track extended status information, \"Off\" to disable"),
4172 AP_INIT_FLAG("SeeRequestTail", ap_set_reqtail, NULL, RSRC_CONF,
4173 "For extended status, \"On\" to see the last 63 chars of "
4174 "the request line, \"Off\" (default) to see the first 63"),
4177 * These are default configuration directives that mpms can/should
4179 * XXX These are not for all platforms, and even some Unix MPMs might not want
4182 AP_INIT_TAKE1("PidFile", ap_mpm_set_pidfile, NULL, RSRC_CONF,
4183 "A file for logging the server process ID"),
4184 AP_INIT_TAKE1("MaxRequestsPerChild", ap_mpm_set_max_requests, NULL, RSRC_CONF,
4185 "Maximum number of connections a particular child serves before "
4186 "dying. (DEPRECATED, use MaxConnectionsPerChild)"),
4187 AP_INIT_TAKE1("MaxConnectionsPerChild", ap_mpm_set_max_requests, NULL, RSRC_CONF,
4188 "Maximum number of connections a particular child serves before dying."),
4189 AP_INIT_TAKE1("CoreDumpDirectory", ap_mpm_set_coredumpdir, NULL, RSRC_CONF,
4190 "The location of the directory Apache changes to before dumping core"),
4191 AP_INIT_TAKE1("MaxMemFree", ap_mpm_set_max_mem_free, NULL, RSRC_CONF,
4192 "Maximum number of 1k blocks a particular child's allocator may hold."),
4193 AP_INIT_TAKE1("ThreadStackSize", ap_mpm_set_thread_stacksize, NULL, RSRC_CONF,
4194 "Size in bytes of stack used by threads handling client connections"),
4195 #if AP_ENABLE_EXCEPTION_HOOK
4196 AP_INIT_TAKE1("EnableExceptionHook", ap_mpm_set_exception_hook, NULL, RSRC_CONF,
4197 "Controls whether exception hook may be called after a crash"),
4199 AP_INIT_TAKE1("TraceEnable", set_trace_enable, NULL, RSRC_CONF,
4200 "'on' (default), 'off' or 'extended' to trace request body content"),
4201 AP_INIT_ITERATE("HttpProtocol", set_http_protocol, NULL, RSRC_CONF,
4202 "Allowed HTTP version or range (e.g. '1.1', '1.0-9.9'"),
4203 AP_INIT_ITERATE("RegisterHttpMethod", set_http_method, NULL, RSRC_CONF,
4204 "Registers non-standard HTTP methods"),
4208 /*****************************************************************
4210 * Core handlers for various phases of server operation...
4213 AP_DECLARE_NONSTD(int) ap_core_translate(request_rec *r)
4218 /* XXX this seems too specific, this should probably become
4219 * some general-case test
4222 return HTTP_FORBIDDEN;
4224 if (!r->uri || ((r->uri[0] != '/') && strcmp(r->uri, "*"))) {
4225 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00126)
4226 "Invalid URI in request %s", r->the_request);
4227 return HTTP_BAD_REQUEST;
4231 && !strncmp(r->uri, r->server->path, r->server->pathlen)
4232 && (r->server->path[r->server->pathlen - 1] == '/'
4233 || r->uri[r->server->pathlen] == '/'
4234 || r->uri[r->server->pathlen] == '\0'))
4236 path = r->uri + r->server->pathlen;
4242 * Make sure that we do not mess up the translation by adding two
4243 * /'s in a row. This happens under windows when the document
4244 * root ends with a /
4246 /* skip all leading /'s (e.g. http://localhost///foo)
4247 * so we are looking at only the relative path.
4249 while (*path == '/') {
4252 if ((rv = apr_filepath_merge(&r->filename, ap_document_root(r), path,
4253 APR_FILEPATH_TRUENAME
4254 | APR_FILEPATH_SECUREROOT, r->pool))
4256 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00127)
4257 "Cannot map %s to file", r->the_request);
4258 return HTTP_FORBIDDEN;
4260 r->canonical_filename = r->filename;
4265 /*****************************************************************
4267 * Test the filesystem name through directory_walk and file_walk
4269 static int core_map_to_storage(request_rec *r)
4273 if ((access_status = ap_directory_walk(r))) {
4274 return access_status;
4277 if ((access_status = ap_file_walk(r))) {
4278 return access_status;
4285 static int do_nothing(request_rec *r) { return OK; }
4288 static int core_override_type(request_rec *r)
4290 core_dir_config *conf =
4291 (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
4293 /* Check for overrides with ForceType / SetHandler
4295 if (conf->mime_type && strcmp(conf->mime_type, "none"))
4296 ap_set_content_type(r, (char*) conf->mime_type);
4298 if (conf->handler && strcmp(conf->handler, "none"))
4299 r->handler = conf->handler;
4301 /* Deal with the poor soul who is trying to force path_info to be
4302 * accepted within the core_handler, where they will let the subreq
4303 * address its contents. This is toggled by the user in the very
4304 * beginning of the fixup phase (here!), so modules should override the user's
4305 * discretion in their own module fixup phase. It is tristate, if
4306 * the user doesn't specify, the result is AP_REQ_DEFAULT_PATH_INFO.
4307 * (which the module may interpret to its own customary behavior.)
4308 * It won't be touched if the value is no longer AP_ACCEPT_PATHINFO_UNSET,
4309 * so any module changing the value prior to the fixup phase
4310 * OVERRIDES the user's choice.
4312 if ((r->used_path_info == AP_REQ_DEFAULT_PATH_INFO)
4313 && (conf->accept_path_info != AP_ACCEPT_PATHINFO_UNSET)) {
4314 /* No module knew better, and the user coded AcceptPathInfo */
4315 r->used_path_info = conf->accept_path_info;
4321 static int default_handler(request_rec *r)
4323 conn_rec *c = r->connection;
4324 apr_bucket_brigade *bb;
4328 apr_file_t *fd = NULL;
4329 apr_status_t status;
4330 /* XXX if/when somebody writes a content-md5 filter we either need to
4331 * remove this support or coordinate when to use the filter vs.
4332 * when to use this code
4333 * The current choice of when to compute the md5 here matches the 1.3
4334 * support fairly closely (unlike 1.3, we don't handle computing md5
4335 * when the charset is translated).
4337 int bld_content_md5;
4339 d = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
4340 bld_content_md5 = (d->content_md5 == AP_CONTENT_MD5_ON)
4341 && r->output_filters->frec->ftype != AP_FTYPE_RESOURCE;
4343 ap_allow_standard_methods(r, MERGE_ALLOW, M_GET, M_OPTIONS, M_POST, -1);
4345 /* If filters intend to consume the request body, they must
4346 * register an InputFilter to slurp the contents of the POST
4347 * data from the POST input stream. It no longer exists when
4348 * the output filters are invoked by the default handler.
4350 if ((errstatus = ap_discard_request_body(r)) != OK) {
4354 if (r->method_number == M_GET || r->method_number == M_POST) {
4355 if (r->finfo.filetype == APR_NOFILE) {
4356 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00128)
4357 "File does not exist: %s", r->filename);
4358 return HTTP_NOT_FOUND;
4361 /* Don't try to serve a dir. Some OSs do weird things with
4364 if (r->finfo.filetype == APR_DIR) {
4365 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00129)
4366 "Attempt to serve directory: %s", r->filename);
4367 return HTTP_NOT_FOUND;
4370 if ((r->used_path_info != AP_REQ_ACCEPT_PATH_INFO) &&
4371 r->path_info && *r->path_info)
4373 /* default to reject */
4374 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00130)
4375 "File does not exist: %s",
4376 apr_pstrcat(r->pool, r->filename, r->path_info, NULL));
4377 return HTTP_NOT_FOUND;
4380 /* We understood the (non-GET) method, but it might not be legal for
4381 this particular resource. Check to see if the 'deliver_script'
4382 flag is set. If so, then we go ahead and deliver the file since
4383 it isn't really content (only GET normally returns content).
4385 Note: based on logic further above, the only possible non-GET
4386 method at this point is POST. In the future, we should enable
4387 script delivery for all methods. */
4388 if (r->method_number != M_GET) {
4389 core_request_config *req_cfg;
4391 req_cfg = ap_get_core_module_config(r->request_config);
4392 if (!req_cfg->deliver_script) {
4393 /* The flag hasn't been set for this request. Punt. */
4394 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00131)
4395 "This resource does not accept the %s method.",
4397 return HTTP_METHOD_NOT_ALLOWED;
4402 if ((status = apr_file_open(&fd, r->filename, APR_READ | APR_BINARY
4403 #if APR_HAS_SENDFILE
4404 | AP_SENDFILE_ENABLED(d->enable_sendfile)
4406 , 0, r->pool)) != APR_SUCCESS) {
4407 ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(00132)
4408 "file permissions deny server access: %s", r->filename);
4409 return HTTP_FORBIDDEN;
4412 ap_update_mtime(r, r->finfo.mtime);
4413 ap_set_last_modified(r);
4415 ap_set_accept_ranges(r);
4416 ap_set_content_length(r, r->finfo.size);
4417 if (bld_content_md5) {
4418 apr_table_setn(r->headers_out, "Content-MD5",
4419 ap_md5digest(r->pool, fd));
4422 bb = apr_brigade_create(r->pool, c->bucket_alloc);
4424 if ((errstatus = ap_meets_conditions(r)) != OK) {
4426 r->status = errstatus;
4429 e = apr_brigade_insert_file(bb, fd, 0, r->finfo.size, r->pool);
4432 if (d->enable_mmap == ENABLE_MMAP_OFF) {
4433 (void)apr_bucket_file_enable_mmap(e, 0);
4438 e = apr_bucket_eos_create(c->bucket_alloc);
4439 APR_BRIGADE_INSERT_TAIL(bb, e);
4441 status = ap_pass_brigade(r->output_filters, bb);
4442 if (status == APR_SUCCESS
4443 || r->status != HTTP_OK
4448 /* no way to know what type of error occurred */
4449 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, APLOGNO(00133)
4450 "default_handler: ap_pass_brigade returned %i",
4452 return HTTP_INTERNAL_SERVER_ERROR;
4455 else { /* unusual method (not GET or POST) */
4456 if (r->method_number == M_INVALID) {
4457 /* See if this looks like an undecrypted SSL handshake attempt.
4458 * It's safe to look a couple bytes into the_request if it exists, as it's
4459 * always allocated at least MIN_LINE_ALLOC (80) bytes.
4462 && r->the_request[0] == 0x16
4463 && (r->the_request[1] == 0x2 || r->the_request[1] == 0x3)) {
4464 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00134)
4465 "Invalid method in request %s - possible attempt to establish SSL connection on non-SSL port", r->the_request);
4467 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00135)
4468 "Invalid method in request %s", r->the_request);
4470 return HTTP_NOT_IMPLEMENTED;
4473 if (r->method_number == M_OPTIONS) {
4474 return ap_send_http_options(r);
4476 return HTTP_METHOD_NOT_ALLOWED;
4480 /* Optional function coming from mod_logio, used for logging of output
4483 APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_out) *ap__logio_add_bytes_out;
4484 APR_OPTIONAL_FN_TYPE(authz_some_auth_required) *ap__authz_ap_some_auth_required;
4486 /* Insist that at least one module will undertake to provide system
4487 * security by dropping startup privileges.
4489 static int sys_privileges = 0;
4490 AP_DECLARE(int) ap_sys_privileges_handlers(int inc)
4492 sys_privileges += inc;
4493 return sys_privileges;
4496 static int check_errorlog_dir(apr_pool_t *p, server_rec *s)
4498 if (!s->error_fname || s->error_fname[0] == '|'
4499 || strcmp(s->error_fname, "syslog") == 0) {
4503 char *abs = ap_server_root_relative(p, s->error_fname);
4504 char *dir = ap_make_dirstr_parent(p, abs);
4506 apr_status_t rv = apr_stat(&finfo, dir, APR_FINFO_TYPE, p);
4507 if (rv == APR_SUCCESS && finfo.filetype != APR_DIR)
4509 if (rv != APR_SUCCESS) {
4510 const char *desc = "main error log";
4512 desc = apr_psprintf(p, "error log of vhost defined at %s:%d",
4513 s->defn_name, s->defn_line_number);
4514 ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_EMERG, rv,
4515 ap_server_conf, APLOGNO(02291)
4516 "Cannot access directory '%s' for %s", dir, desc);
4523 static int core_check_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
4527 if (check_errorlog_dir(ptemp, s) != OK)
4535 static int core_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
4537 ap_mutex_init(pconf);
4539 if (!saved_server_config_defines)
4540 init_config_defines(pconf);
4541 apr_pool_cleanup_register(pconf, NULL, reset_config_defines,
4542 apr_pool_cleanup_null);
4544 mpm_common_pre_config(pconf);
4549 static int core_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
4551 ap__logio_add_bytes_out = APR_RETRIEVE_OPTIONAL_FN(ap_logio_add_bytes_out);
4552 ident_lookup = APR_RETRIEVE_OPTIONAL_FN(ap_ident_lookup);
4553 ap__authz_ap_some_auth_required = APR_RETRIEVE_OPTIONAL_FN(authz_some_auth_required);
4554 authn_ap_auth_type = APR_RETRIEVE_OPTIONAL_FN(authn_ap_auth_type);
4555 authn_ap_auth_name = APR_RETRIEVE_OPTIONAL_FN(authn_ap_auth_name);
4556 access_compat_ap_satisfies = APR_RETRIEVE_OPTIONAL_FN(access_compat_ap_satisfies);
4559 ap_setup_make_content_type(pconf);
4560 ap_setup_auth_internal(ptemp);
4561 if (!sys_privileges) {
4562 ap_log_error(APLOG_MARK, APLOG_CRIT, 0, NULL, APLOGNO(00136)
4563 "Server MUST relinquish startup privileges before "
4564 "accepting connections. Please ensure mod_unixd "
4565 "or other system security module is loaded.");
4568 apr_pool_cleanup_register(pconf, NULL, ap_mpm_end_gen_helper,
4569 apr_pool_cleanup_null);
4573 static void core_insert_filter(request_rec *r)
4575 core_dir_config *conf = (core_dir_config *)
4576 ap_get_core_module_config(r->per_dir_config);
4577 const char *filter, *filters = conf->output_filters;
4580 while (*filters && (filter = ap_getword(r->pool, &filters, ';'))) {
4581 ap_add_output_filter(filter, NULL, r, r->connection);
4585 filters = conf->input_filters;
4587 while (*filters && (filter = ap_getword(r->pool, &filters, ';'))) {
4588 ap_add_input_filter(filter, NULL, r, r->connection);
4593 static apr_size_t num_request_notes = AP_NUM_STD_NOTES;
4595 static apr_status_t reset_request_notes(void *dummy)
4597 num_request_notes = AP_NUM_STD_NOTES;
4601 AP_DECLARE(apr_size_t) ap_register_request_note(void)
4603 apr_pool_cleanup_register(apr_hook_global_pool, NULL, reset_request_notes,
4604 apr_pool_cleanup_null);
4605 return num_request_notes++;
4608 AP_DECLARE(void **) ap_get_request_note(request_rec *r, apr_size_t note_num)
4610 core_request_config *req_cfg;
4612 if (note_num >= num_request_notes) {
4616 req_cfg = (core_request_config *)
4617 ap_get_core_module_config(r->request_config);
4623 return &(req_cfg->notes[note_num]);
4626 AP_DECLARE(apr_socket_t *) ap_get_conn_socket(conn_rec *c)
4628 return ap_get_core_module_config(c->conn_config);
4631 static int core_create_req(request_rec *r)
4633 /* Alloc the config struct and the array of request notes in
4634 * a single block for efficiency
4636 core_request_config *req_cfg;
4638 req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config) +
4639 sizeof(void *) * num_request_notes);
4640 req_cfg->notes = (void **)((char *)req_cfg + sizeof(core_request_config));
4642 /* ### temporarily enable script delivery as the default */
4643 req_cfg->deliver_script = 1;
4646 core_request_config *main_req_cfg = (core_request_config *)
4647 ap_get_core_module_config(r->main->request_config);
4648 req_cfg->bb = main_req_cfg->bb;
4651 req_cfg->bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
4654 ap_set_core_module_config(r->request_config, req_cfg);
4659 static int core_create_proxy_req(request_rec *r, request_rec *pr)
4661 return core_create_req(pr);
4664 static conn_rec *core_create_conn(apr_pool_t *ptrans, server_rec *server,
4665 apr_socket_t *csd, long id, void *sbh,
4666 apr_bucket_alloc_t *alloc)
4669 conn_rec *c = (conn_rec *) apr_pcalloc(ptrans, sizeof(conn_rec));
4672 (void)ap_update_child_status(c->sbh, SERVER_BUSY_READ, (request_rec *)NULL);
4674 /* Got a connection structure, so initialize what fields we can
4675 * (the rest are zeroed out by pcalloc).
4677 c->conn_config = ap_create_conn_config(ptrans);
4678 c->notes = apr_table_make(ptrans, 5);
4681 if ((rv = apr_socket_addr_get(&c->local_addr, APR_LOCAL, csd))
4683 ap_log_error(APLOG_MARK, APLOG_INFO, rv, server, APLOGNO(00137)
4684 "apr_socket_addr_get(APR_LOCAL)");
4685 apr_socket_close(csd);
4689 apr_sockaddr_ip_get(&c->local_ip, c->local_addr);
4690 if ((rv = apr_socket_addr_get(&c->client_addr, APR_REMOTE, csd))
4692 ap_log_error(APLOG_MARK, APLOG_INFO, rv, server, APLOGNO(00138)
4693 "apr_socket_addr_get(APR_REMOTE)");
4694 apr_socket_close(csd);
4698 apr_sockaddr_ip_get(&c->client_ip, c->client_addr);
4699 c->base_server = server;
4702 c->bucket_alloc = alloc;
4704 c->clogging_input_filters = 0;
4709 static int core_pre_connection(conn_rec *c, void *csd)
4711 core_net_rec *net = apr_palloc(c->pool, sizeof(*net));
4714 /* The Nagle algorithm says that we should delay sending partial
4715 * packets in hopes of getting more data. We don't want to do
4716 * this; we are not telnet. There are bad interactions between
4717 * persistent connections and Nagle's algorithm that have very severe
4718 * performance penalties. (Failing to disable Nagle is not much of a
4719 * problem with simple HTTP.)
4721 rv = apr_socket_opt_set(csd, APR_TCP_NODELAY, 1);
4722 if (rv != APR_SUCCESS && rv != APR_ENOTIMPL) {
4723 /* expected cause is that the client disconnected already,
4724 * hence the debug level
4726 ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(00139)
4727 "apr_socket_opt_set(APR_TCP_NODELAY)");
4730 /* The core filter requires the timeout mode to be set, which
4731 * incidentally sets the socket to be nonblocking. If this
4732 * is not initialized correctly, Linux - for example - will
4733 * be initially blocking, while Solaris will be non blocking
4734 * and any initial read will fail.
4736 rv = apr_socket_timeout_set(csd, c->base_server->timeout);
4737 if (rv != APR_SUCCESS) {
4738 /* expected cause is that the client disconnected already */
4739 ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(00140)
4740 "apr_socket_timeout_set");
4745 net->out_ctx = NULL;
4746 net->client_socket = csd;
4748 ap_set_core_module_config(net->c->conn_config, csd);
4749 ap_add_input_filter_handle(ap_core_input_filter_handle, net, NULL, net->c);
4750 ap_add_output_filter_handle(ap_core_output_filter_handle, net, NULL, net->c);
4754 AP_DECLARE(int) ap_state_query(int query)
4757 case AP_SQ_MAIN_STATE:
4758 return ap_main_state;
4759 case AP_SQ_RUN_MODE:
4761 case AP_SQ_CONFIG_GEN:
4762 return ap_config_generation;
4764 return AP_SQ_NOT_SUPPORTED;
4768 static apr_random_t *rng = NULL;
4770 static apr_thread_mutex_t *rng_mutex = NULL;
4773 static void core_child_init(apr_pool_t *pchild, server_rec *s)
4778 if (ap_mpm_query(AP_MPMQ_IS_THREADED, &threaded_mpm) == APR_SUCCESS
4781 apr_thread_mutex_create(&rng_mutex, APR_THREAD_MUTEX_DEFAULT, pchild);
4784 /* The MPMs use plain fork() and not apr_proc_fork(), so we have to call
4785 * apr_random_after_fork() manually in the child
4787 proc.pid = getpid();
4788 apr_random_after_fork(&proc);
4791 AP_CORE_DECLARE(void) ap_random_parent_after_fork(void)
4794 * To ensure that the RNG state in the parent changes after the fork, we
4795 * pull some data from the RNG and discard it. This ensures that the RNG
4796 * states in the children are different even after the pid wraps around.
4797 * As we only use apr_random for insecure random bytes, pulling 2 bytes
4799 * XXX: APR should probably have some dedicated API to do this, but it
4800 * XXX: currently doesn't.
4803 apr_random_insecure_bytes(rng, &data, sizeof(data));
4806 AP_CORE_DECLARE(void) ap_init_rng(apr_pool_t *p)
4808 unsigned char seed[8];
4810 rng = apr_random_standard_new(p);
4812 rv = apr_generate_random_bytes(seed, sizeof(seed));
4813 if (rv != APR_SUCCESS)
4815 apr_random_add_entropy(rng, seed, sizeof(seed));
4816 rv = apr_random_insecure_ready(rng);
4817 } while (rv == APR_ENOTENOUGHENTROPY);
4818 if (rv == APR_SUCCESS)
4821 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, APLOGNO(00141)
4822 "Could not initialize random number generator");
4826 AP_DECLARE(void) ap_random_insecure_bytes(void *buf, apr_size_t size)
4830 apr_thread_mutex_lock(rng_mutex);
4832 /* apr_random_insecure_bytes can only fail with APR_ENOTENOUGHENTROPY,
4833 * and we have ruled that out during initialization. Therefore we don't
4834 * need to check the return code.
4836 apr_random_insecure_bytes(rng, buf, size);
4839 apr_thread_mutex_unlock(rng_mutex);
4844 * Finding a random number in a range.
4845 * n' = a + n(b-a+1)/(M+1)
4847 * n' = random number in range
4848 * a = low end of range
4849 * b = high end of range
4850 * n = random number of 0..M
4852 * Algorithm 'borrowed' from PHP's rand() function.
4854 #define RAND_RANGE(__n, __min, __max, __tmax) \
4855 (__n) = (__min) + (long) ((double) ((__max) - (__min) + 1.0) * ((__n) / ((__tmax) + 1.0)))
4856 AP_DECLARE(apr_uint32_t) ap_random_pick(apr_uint32_t min, apr_uint32_t max)
4858 apr_uint32_t number;
4861 ap_random_insecure_bytes(&num16, sizeof(num16));
4862 RAND_RANGE(num16, min, max, APR_UINT16_MAX);
4866 ap_random_insecure_bytes(&number, sizeof(number));
4867 RAND_RANGE(number, min, max, APR_UINT32_MAX);
4872 static apr_status_t core_insert_network_bucket(conn_rec *c,
4873 apr_bucket_brigade *bb,
4874 apr_socket_t *socket)
4876 apr_bucket *e = apr_bucket_socket_create(socket, c->bucket_alloc);
4877 APR_BRIGADE_INSERT_TAIL(bb, e);
4881 static apr_status_t core_dirwalk_stat(apr_finfo_t *finfo, request_rec *r,
4884 return apr_stat(finfo, r->filename, wanted, r->pool);
4887 static void core_dump_config(apr_pool_t *p, server_rec *s)
4889 core_server_config *sconf = ap_get_core_module_config(s->module_config);
4890 apr_file_t *out = NULL;
4892 const char **defines;
4894 if (!ap_exists_config_define("DUMP_RUN_CFG"))
4897 apr_file_open_stdout(&out, p);
4898 apr_file_printf(out, "ServerRoot: \"%s\"\n", ap_server_root);
4899 tmp = ap_server_root_relative(p, sconf->ap_document_root);
4900 apr_file_printf(out, "Main DocumentRoot: \"%s\"\n", tmp);
4901 if (s->error_fname[0] != '|' && strcmp(s->error_fname, "syslog") != 0)
4902 tmp = ap_server_root_relative(p, s->error_fname);
4904 tmp = s->error_fname;
4905 apr_file_printf(out, "Main ErrorLog: \"%s\"\n", tmp);
4906 if (ap_scoreboard_fname) {
4907 tmp = ap_runtime_dir_relative(p, ap_scoreboard_fname);
4908 apr_file_printf(out, "ScoreBoardFile: \"%s\"\n", tmp);
4910 ap_dump_mutexes(p, s, out);
4911 ap_mpm_dump_pidfile(p, out);
4913 defines = (const char **)ap_server_config_defines->elts;
4914 for (i = 0; i < ap_server_config_defines->nelts; i++) {
4915 const char *name = defines[i];
4916 const char *val = NULL;
4917 if (server_config_defined_vars)
4918 val = apr_table_get(server_config_defined_vars, name);
4920 apr_file_printf(out, "Define: %s=%s\n", name, val);
4922 apr_file_printf(out, "Define: %s\n", name);
4926 static void register_hooks(apr_pool_t *p)
4928 errorlog_hash = apr_hash_make(p);
4929 ap_register_log_hooks(p);
4930 ap_register_config_hooks(p);
4933 /* create_connection and pre_connection should always be hooked
4934 * APR_HOOK_REALLY_LAST by core to give other modules the opportunity
4935 * to install alternate network transports and stop other functions
4938 ap_hook_create_connection(core_create_conn, NULL, NULL,
4939 APR_HOOK_REALLY_LAST);
4940 ap_hook_pre_connection(core_pre_connection, NULL, NULL,
4941 APR_HOOK_REALLY_LAST);
4943 ap_hook_pre_config(core_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
4944 ap_hook_post_config(core_post_config,NULL,NULL,APR_HOOK_REALLY_FIRST);
4945 ap_hook_check_config(core_check_config,NULL,NULL,APR_HOOK_FIRST);
4946 ap_hook_test_config(core_dump_config,NULL,NULL,APR_HOOK_FIRST);
4947 ap_hook_translate_name(ap_core_translate,NULL,NULL,APR_HOOK_REALLY_LAST);
4948 ap_hook_map_to_storage(core_map_to_storage,NULL,NULL,APR_HOOK_REALLY_LAST);
4949 ap_hook_open_logs(ap_open_logs,NULL,NULL,APR_HOOK_REALLY_FIRST);
4950 ap_hook_child_init(core_child_init,NULL,NULL,APR_HOOK_REALLY_FIRST);
4951 ap_hook_child_init(ap_logs_child_init,NULL,NULL,APR_HOOK_MIDDLE);
4952 ap_hook_handler(default_handler,NULL,NULL,APR_HOOK_REALLY_LAST);
4953 /* FIXME: I suspect we can eliminate the need for these do_nothings - Ben */
4954 ap_hook_type_checker(do_nothing,NULL,NULL,APR_HOOK_REALLY_LAST);
4955 ap_hook_fixups(core_override_type,NULL,NULL,APR_HOOK_REALLY_FIRST);
4956 ap_hook_create_request(core_create_req, NULL, NULL, APR_HOOK_MIDDLE);
4957 APR_OPTIONAL_HOOK(proxy, create_req, core_create_proxy_req, NULL, NULL,
4959 ap_hook_pre_mpm(ap_create_scoreboard, NULL, NULL, APR_HOOK_MIDDLE);
4960 ap_hook_child_status(ap_core_child_status, NULL, NULL, APR_HOOK_MIDDLE);
4961 ap_hook_insert_network_bucket(core_insert_network_bucket, NULL, NULL,
4962 APR_HOOK_REALLY_LAST);
4963 ap_hook_dirwalk_stat(core_dirwalk_stat, NULL, NULL, APR_HOOK_REALLY_LAST);
4965 /* register the core's insert_filter hook and register core-provided
4968 ap_hook_insert_filter(core_insert_filter, NULL, NULL, APR_HOOK_MIDDLE);
4970 ap_core_input_filter_handle =
4971 ap_register_input_filter("CORE_IN", ap_core_input_filter,
4972 NULL, AP_FTYPE_NETWORK);
4973 ap_content_length_filter_handle =
4974 ap_register_output_filter("CONTENT_LENGTH", ap_content_length_filter,
4975 NULL, AP_FTYPE_PROTOCOL);
4976 ap_core_output_filter_handle =
4977 ap_register_output_filter("CORE", ap_core_output_filter,
4978 NULL, AP_FTYPE_NETWORK);
4979 ap_subreq_core_filter_handle =
4980 ap_register_output_filter("SUBREQ_CORE", ap_sub_req_output_filter,
4981 NULL, AP_FTYPE_CONTENT_SET);
4983 ap_register_output_filter("OLD_WRITE", ap_old_write_filter,
4984 NULL, AP_FTYPE_RESOURCE - 10);
4987 AP_DECLARE_MODULE(core) = {
4989 AP_PLATFORM_REWRITE_ARGS_HOOK, /* hook to run before apache parses args */
4990 create_core_dir_config, /* create per-directory config structure */
4991 merge_core_dir_configs, /* merge per-directory config structures */
4992 create_core_server_config, /* create per-server config structure */
4993 merge_core_server_configs, /* merge per-server config structures */
4994 core_cmds, /* command apr_table_t */
4995 register_hooks /* register hooks */