1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 * @brief HTTP Daemon routines
21 * @defgroup APACHE Apache HTTP Server
23 * Top level group of which all other groups are a member
26 * @defgroup APACHE_MODS Loadable modules
27 * Top level group for modules
28 * @defgroup APACHE_OS Operating System Specific
29 * @defgroup APACHE_INTERNAL Internal interfaces
30 * @defgroup APACHE_CORE Core routines
32 * @defgroup APACHE_CORE_DAEMON HTTP Daemon Routine
36 #ifndef APACHE_HTTPD_H
37 #define APACHE_HTTPD_H
39 /* XXX - We need to push more stuff to other .h files, or even .c files, to
40 * make this file smaller
43 /* Headers in which EVERYONE has an interest... */
44 #include "ap_config.h"
47 #include "ap_release.h"
50 #include "apr_general.h"
51 #include "apr_tables.h"
52 #include "apr_pools.h"
54 #include "apr_network_io.h"
55 #include "apr_buckets.h"
57 #include "apr_thread_proc.h"
67 /* Note: apr_uri.h is also included, see below */
73 /* ----------------------------- config dir ------------------------------ */
75 /** Define this to be the default server home dir. Most things later in this
76 * file with a relative pathname will have this added.
80 /** Set default for OS/2 file system */
81 #define HTTPD_ROOT "/os2httpd"
83 /** Set default for Windows file system */
84 #define HTTPD_ROOT "/apache"
85 #elif defined (NETWARE)
86 /** Set the default for NetWare */
87 #define HTTPD_ROOT "/apache"
89 /** Set for all other OSs */
90 #define HTTPD_ROOT "/usr/local/apache"
92 #endif /* HTTPD_ROOT */
95 * --------- You shouldn't have to edit anything below this line ----------
97 * Any modifications to any defaults not defined above should be done in the
98 * respective configuration file.
103 * Default location of documents. Can be overridden by the DocumentRoot
106 #ifndef DOCUMENT_LOCATION
108 /* Set default for OS/2 file system */
109 #define DOCUMENT_LOCATION HTTPD_ROOT "/docs"
111 /* Set default for non OS/2 file system */
112 #define DOCUMENT_LOCATION HTTPD_ROOT "/htdocs"
114 #endif /* DOCUMENT_LOCATION */
116 /** Maximum number of dynamically loaded modules */
117 #ifndef DYNAMIC_MODULE_LIMIT
118 #define DYNAMIC_MODULE_LIMIT 256
121 /** Default administrator's address */
122 #define DEFAULT_ADMIN "[no address given]"
124 /** The name of the log files */
125 #ifndef DEFAULT_ERRORLOG
126 #if defined(OS2) || defined(WIN32)
127 #define DEFAULT_ERRORLOG "logs/error.log"
129 #define DEFAULT_ERRORLOG "logs/error_log"
131 #endif /* DEFAULT_ERRORLOG */
133 /** Define this to be what your per-directory security files are called */
134 #ifndef DEFAULT_ACCESS_FNAME
136 /* Set default for OS/2 file system */
137 #define DEFAULT_ACCESS_FNAME "htaccess"
139 #define DEFAULT_ACCESS_FNAME ".htaccess"
141 #endif /* DEFAULT_ACCESS_FNAME */
143 /** The name of the server config file */
144 #ifndef SERVER_CONFIG_FILE
145 #define SERVER_CONFIG_FILE "conf/httpd.conf"
148 /** The default path for CGI scripts if none is currently set */
150 #define DEFAULT_PATH "/bin:/usr/bin:/usr/ucb:/usr/bsd:/usr/local/bin"
153 /** The path to the suExec wrapper, can be overridden in Configuration */
155 #define SUEXEC_BIN HTTPD_ROOT "/bin/suexec"
158 /** The timeout for waiting for messages */
159 #ifndef DEFAULT_TIMEOUT
160 #define DEFAULT_TIMEOUT 60
163 /** The timeout for waiting for keepalive timeout until next request */
164 #ifndef DEFAULT_KEEPALIVE_TIMEOUT
165 #define DEFAULT_KEEPALIVE_TIMEOUT 5
168 /** The number of requests to entertain per connection */
169 #ifndef DEFAULT_KEEPALIVE
170 #define DEFAULT_KEEPALIVE 100
174 * Limits on the size of various request items. These limits primarily
175 * exist to prevent simple denial-of-service attacks on a server based
176 * on misuse of the protocol. The recommended values will depend on the
177 * nature of the server resources -- CGI scripts and database backends
178 * might require large values, but most servers could get by with much
179 * smaller limits than we use below. The request message body size can
180 * be limited by the per-dir config directive LimitRequestBody.
182 * Internal buffer sizes are two bytes more than the DEFAULT_LIMIT_REQUEST_LINE
183 * and DEFAULT_LIMIT_REQUEST_FIELDSIZE below, which explains the 8190.
184 * These two limits can be lowered or raised by the server config
185 * directives LimitRequestLine and LimitRequestFieldsize, respectively.
187 * DEFAULT_LIMIT_REQUEST_FIELDS can be modified or disabled (set = 0) by
188 * the server config directive LimitRequestFields.
191 /** default limit on bytes in Request-Line (Method+URI+HTTP-version) */
192 #ifndef DEFAULT_LIMIT_REQUEST_LINE
193 #define DEFAULT_LIMIT_REQUEST_LINE 8190
195 /** default limit on bytes in any one header field */
196 #ifndef DEFAULT_LIMIT_REQUEST_FIELDSIZE
197 #define DEFAULT_LIMIT_REQUEST_FIELDSIZE 8190
199 /** default limit on number of request header fields */
200 #ifndef DEFAULT_LIMIT_REQUEST_FIELDS
201 #define DEFAULT_LIMIT_REQUEST_FIELDS 100
205 * The default default character set name to add if AddDefaultCharset is
206 * enabled. Overridden with AddDefaultCharsetName.
208 #define DEFAULT_ADD_DEFAULT_CHARSET_NAME "iso-8859-1"
210 /** default HTTP Server protocol */
211 #define AP_SERVER_PROTOCOL "HTTP/1.1"
214 /* ------------------ stuff that modules are allowed to look at ----------- */
216 /** Define this to be what your HTML directory content files are called */
217 #ifndef AP_DEFAULT_INDEX
218 #define AP_DEFAULT_INDEX "index.html"
221 /** The name of the MIME types file */
222 #ifndef AP_TYPES_CONFIG_FILE
223 #define AP_TYPES_CONFIG_FILE "conf/mime.types"
227 * Define the HTML doctype strings centrally.
229 /** HTML 2.0 Doctype */
230 #define DOCTYPE_HTML_2_0 "<!DOCTYPE HTML PUBLIC \"-//IETF//" \
231 "DTD HTML 2.0//EN\">\n"
232 /** HTML 3.2 Doctype */
233 #define DOCTYPE_HTML_3_2 "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
234 "DTD HTML 3.2 Final//EN\">\n"
235 /** HTML 4.0 Strict Doctype */
236 #define DOCTYPE_HTML_4_0S "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
237 "DTD HTML 4.0//EN\"\n" \
238 "\"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
239 /** HTML 4.0 Transitional Doctype */
240 #define DOCTYPE_HTML_4_0T "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
241 "DTD HTML 4.0 Transitional//EN\"\n" \
242 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
243 /** HTML 4.0 Frameset Doctype */
244 #define DOCTYPE_HTML_4_0F "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
245 "DTD HTML 4.0 Frameset//EN\"\n" \
246 "\"http://www.w3.org/TR/REC-html40/frameset.dtd\">\n"
247 /** XHTML 1.0 Strict Doctype */
248 #define DOCTYPE_XHTML_1_0S "<!DOCTYPE html PUBLIC \"-//W3C//" \
249 "DTD XHTML 1.0 Strict//EN\"\n" \
250 "\"http://www.w3.org/TR/xhtml1/DTD/" \
251 "xhtml1-strict.dtd\">\n"
252 /** XHTML 1.0 Transitional Doctype */
253 #define DOCTYPE_XHTML_1_0T "<!DOCTYPE html PUBLIC \"-//W3C//" \
254 "DTD XHTML 1.0 Transitional//EN\"\n" \
255 "\"http://www.w3.org/TR/xhtml1/DTD/" \
256 "xhtml1-transitional.dtd\">\n"
257 /** XHTML 1.0 Frameset Doctype */
258 #define DOCTYPE_XHTML_1_0F "<!DOCTYPE html PUBLIC \"-//W3C//" \
259 "DTD XHTML 1.0 Frameset//EN\"\n" \
260 "\"http://www.w3.org/TR/xhtml1/DTD/" \
261 "xhtml1-frameset.dtd\">"
263 /** Internal representation for a HTTP protocol number, e.g., HTTP/1.1 */
264 #define HTTP_VERSION(major,minor) (1000*(major)+(minor))
265 /** Major part of HTTP protocol */
266 #define HTTP_VERSION_MAJOR(number) ((number)/1000)
267 /** Minor part of HTTP protocol */
268 #define HTTP_VERSION_MINOR(number) ((number)%1000)
270 /* -------------- Port number for server running standalone --------------- */
272 /** default HTTP Port */
273 #define DEFAULT_HTTP_PORT 80
274 /** default HTTPS Port */
275 #define DEFAULT_HTTPS_PORT 443
277 * Check whether @a port is the default port for the request @a r.
278 * @param port The port number
279 * @param r The request
280 * @see #ap_default_port
282 #define ap_is_default_port(port,r) ((port) == ap_default_port(r))
284 * Get the default port for a request (which depends on the scheme).
285 * @param r The request
287 #define ap_default_port(r) ap_run_default_port(r)
289 * Get the scheme for a request.
290 * @param r The request
292 #define ap_http_scheme(r) ap_run_http_scheme(r)
294 /** The default string length */
295 #define MAX_STRING_LEN HUGE_STRING_LEN
297 /** The length of a Huge string */
298 #define HUGE_STRING_LEN 8192
300 /** The size of the server's internal read-write buffers */
301 #define AP_IOBUFSIZE 8192
303 /** The max number of regex captures that can be expanded by ap_pregsub */
304 #define AP_MAX_REG_MATCH 10
307 * APR_HAS_LARGE_FILES introduces the problem of spliting sendfile into
308 * mutiple buckets, no greater than MAX(apr_size_t), and more granular
309 * than that in case the brigade code/filters attempt to read it directly.
310 * ### 16mb is an invention, no idea if it is reasonable.
312 #define AP_MAX_SENDFILE 16777216 /* 2^24 */
315 * MPM child process exit status values
316 * The MPM parent process may check the status to see if special
317 * error handling is required.
320 #define APEXIT_OK 0x0
321 /** A fatal error arising during the server's init sequence */
322 #define APEXIT_INIT 0x2
323 /** The child died during its init sequence */
324 #define APEXIT_CHILDINIT 0x3
326 * The child exited due to a resource shortage.
327 * The parent should limit the rate of forking until
328 * the situation is resolved.
330 #define APEXIT_CHILDSICK 0x7
332 * A fatal error, resulting in the whole server aborting.
333 * If a child exits with this error, the parent process
334 * considers this a server-wide fatal error and aborts.
336 #define APEXIT_CHILDFATAL 0xf
340 * Stuff marked #AP_DECLARE is part of the API, and intended for use
341 * by modules. Its purpose is to allow us to add attributes that
342 * particular platforms or compilers require to every exported function.
344 # define AP_DECLARE(type) type
347 #ifndef AP_DECLARE_NONSTD
349 * Stuff marked #AP_DECLARE_NONSTD is part of the API, and intended for
350 * use by modules. The difference between #AP_DECLARE and
351 * #AP_DECLARE_NONSTD is that the latter is required for any functions
352 * which use varargs or are used via indirect function call. This
353 * is to accomodate the two calling conventions in windows dlls.
355 # define AP_DECLARE_NONSTD(type) type
357 #ifndef AP_DECLARE_DATA
358 # define AP_DECLARE_DATA
361 #ifndef AP_MODULE_DECLARE
362 # define AP_MODULE_DECLARE(type) type
364 #ifndef AP_MODULE_DECLARE_NONSTD
365 # define AP_MODULE_DECLARE_NONSTD(type) type
367 #ifndef AP_MODULE_DECLARE_DATA
368 # define AP_MODULE_DECLARE_DATA
373 * modules should not use functions marked AP_CORE_DECLARE
375 #ifndef AP_CORE_DECLARE
376 # define AP_CORE_DECLARE AP_DECLARE
381 * modules should not use functions marked AP_CORE_DECLARE_NONSTD
384 #ifndef AP_CORE_DECLARE_NONSTD
385 # define AP_CORE_DECLARE_NONSTD AP_DECLARE_NONSTD
389 * @defgroup APACHE_APR_STATUS_T HTTPD specific values of apr_status_t
392 #define AP_START_USERERR (APR_OS_START_USERERR + 2000)
393 #define AP_USERERR_LEN 1000
395 /** The function declines to handle the request */
396 #define AP_DECLINED (AP_START_USERERR + 0)
401 * @brief The numeric version information is broken out into fields within this
405 int major; /**< major number */
406 int minor; /**< minor number */
407 int patch; /**< patch number */
408 const char *add_string; /**< additional string like "-dev" */
412 * Return httpd's version information in a numeric form.
414 * @param version Pointer to a version structure for returning the version
417 AP_DECLARE(void) ap_get_server_revision(ap_version_t *version);
420 * Get the server banner in a form suitable for sending over the
421 * network, with the level of information controlled by the
422 * ServerTokens directive.
423 * @return The server banner
425 AP_DECLARE(const char *) ap_get_server_banner(void);
428 * Get the server description in a form suitable for local displays,
429 * status reports, or logging. This includes the detailed server
430 * version and information about some modules. It is not affected
431 * by the ServerTokens directive.
432 * @return The server description
434 AP_DECLARE(const char *) ap_get_server_description(void);
437 * Add a component to the server description and banner strings
438 * @param pconf The pool to allocate the component from
439 * @param component The string to add
441 AP_DECLARE(void) ap_add_version_component(apr_pool_t *pconf, const char *component);
444 * Get the date a time that the server was built
445 * @return The server build time string
447 AP_DECLARE(const char *) ap_get_server_built(void);
449 /* non-HTTP status codes returned by hooks */
451 #define OK 0 /**< Module has handled this stage. */
452 #define DECLINED -1 /**< Module declines to handle */
453 #define DONE -2 /**< Module has served the response completely
454 * - it's safe to die() with no more output
456 #define SUSPENDED -3 /**< Module will handle the remainder of the request.
457 * The core will never invoke the request again, */
459 /** Returned by the bottom-most filter if no data was written.
460 * @see ap_pass_brigade(). */
461 #define AP_NOBODY_WROTE -100
462 /** Returned by the bottom-most filter if no data was read.
463 * @see ap_get_brigade(). */
464 #define AP_NOBODY_READ -101
465 /** Returned by any filter if the filter chain encounters an error
466 * and has already dealt with the error response.
468 #define AP_FILTER_ERROR -102
471 * @defgroup HTTP_Status HTTP Status Codes
475 * The size of the static status_lines array in http_protocol.c for
476 * storing all of the potential response status-lines (a sparse table).
477 * When adding a new code here add it to status_lines as well.
478 * A future version should dynamically generate the apr_table_t at startup.
480 #define RESPONSE_CODES 83
482 #define HTTP_CONTINUE 100
483 #define HTTP_SWITCHING_PROTOCOLS 101
484 #define HTTP_PROCESSING 102
486 #define HTTP_CREATED 201
487 #define HTTP_ACCEPTED 202
488 #define HTTP_NON_AUTHORITATIVE 203
489 #define HTTP_NO_CONTENT 204
490 #define HTTP_RESET_CONTENT 205
491 #define HTTP_PARTIAL_CONTENT 206
492 #define HTTP_MULTI_STATUS 207
493 #define HTTP_ALREADY_REPORTED 208
494 #define HTTP_IM_USED 226
495 #define HTTP_MULTIPLE_CHOICES 300
496 #define HTTP_MOVED_PERMANENTLY 301
497 #define HTTP_MOVED_TEMPORARILY 302
498 #define HTTP_SEE_OTHER 303
499 #define HTTP_NOT_MODIFIED 304
500 #define HTTP_USE_PROXY 305
501 #define HTTP_TEMPORARY_REDIRECT 307
502 #define HTTP_PERMANENT_REDIRECT 308
503 #define HTTP_BAD_REQUEST 400
504 #define HTTP_UNAUTHORIZED 401
505 #define HTTP_PAYMENT_REQUIRED 402
506 #define HTTP_FORBIDDEN 403
507 #define HTTP_NOT_FOUND 404
508 #define HTTP_METHOD_NOT_ALLOWED 405
509 #define HTTP_NOT_ACCEPTABLE 406
510 #define HTTP_PROXY_AUTHENTICATION_REQUIRED 407
511 #define HTTP_REQUEST_TIME_OUT 408
512 #define HTTP_CONFLICT 409
513 #define HTTP_GONE 410
514 #define HTTP_LENGTH_REQUIRED 411
515 #define HTTP_PRECONDITION_FAILED 412
516 #define HTTP_REQUEST_ENTITY_TOO_LARGE 413
517 #define HTTP_REQUEST_URI_TOO_LARGE 414
518 #define HTTP_UNSUPPORTED_MEDIA_TYPE 415
519 #define HTTP_RANGE_NOT_SATISFIABLE 416
520 #define HTTP_EXPECTATION_FAILED 417
521 #define HTTP_UNPROCESSABLE_ENTITY 422
522 #define HTTP_LOCKED 423
523 #define HTTP_FAILED_DEPENDENCY 424
524 #define HTTP_UPGRADE_REQUIRED 426
525 #define HTTP_PRECONDITION_REQUIRED 428
526 #define HTTP_TOO_MANY_REQUESTS 429
527 #define HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE 431
528 #define HTTP_INTERNAL_SERVER_ERROR 500
529 #define HTTP_NOT_IMPLEMENTED 501
530 #define HTTP_BAD_GATEWAY 502
531 #define HTTP_SERVICE_UNAVAILABLE 503
532 #define HTTP_GATEWAY_TIME_OUT 504
533 #define HTTP_VERSION_NOT_SUPPORTED 505
534 #define HTTP_VARIANT_ALSO_VARIES 506
535 #define HTTP_INSUFFICIENT_STORAGE 507
536 #define HTTP_LOOP_DETECTED 508
537 #define HTTP_NOT_EXTENDED 510
538 #define HTTP_NETWORK_AUTHENTICATION_REQUIRED 511
540 /** is the status code informational */
541 #define ap_is_HTTP_INFO(x) (((x) >= 100)&&((x) < 200))
542 /** is the status code OK ?*/
543 #define ap_is_HTTP_SUCCESS(x) (((x) >= 200)&&((x) < 300))
544 /** is the status code a redirect */
545 #define ap_is_HTTP_REDIRECT(x) (((x) >= 300)&&((x) < 400))
546 /** is the status code a error (client or server) */
547 #define ap_is_HTTP_ERROR(x) (((x) >= 400)&&((x) < 600))
548 /** is the status code a client error */
549 #define ap_is_HTTP_CLIENT_ERROR(x) (((x) >= 400)&&((x) < 500))
550 /** is the status code a server error */
551 #define ap_is_HTTP_SERVER_ERROR(x) (((x) >= 500)&&((x) < 600))
552 /** is the status code a (potentially) valid response code? */
553 #define ap_is_HTTP_VALID_RESPONSE(x) (((x) >= 100)&&((x) < 600))
555 /** should the status code drop the connection */
556 #define ap_status_drops_connection(x) \
557 (((x) == HTTP_BAD_REQUEST) || \
558 ((x) == HTTP_REQUEST_TIME_OUT) || \
559 ((x) == HTTP_LENGTH_REQUIRED) || \
560 ((x) == HTTP_REQUEST_ENTITY_TOO_LARGE) || \
561 ((x) == HTTP_REQUEST_URI_TOO_LARGE) || \
562 ((x) == HTTP_INTERNAL_SERVER_ERROR) || \
563 ((x) == HTTP_SERVICE_UNAVAILABLE) || \
564 ((x) == HTTP_NOT_IMPLEMENTED))
568 * @defgroup Methods List of Methods recognized by the server
569 * @ingroup APACHE_CORE_DAEMON
572 * @brief Methods recognized (but not necessarily handled) by the server.
574 * These constants are used in bit shifting masks of size int, so it is
575 * unsafe to have more methods than bits in an int. HEAD == M_GET.
576 * This list must be tracked by the list in http_protocol.c in routine
577 * ap_method_name_of().
581 #define M_GET 0 /** RFC 2616: HTTP */
582 #define M_PUT 1 /* : */
587 #define M_TRACE 6 /** RFC 2616: HTTP */
588 #define M_PATCH 7 /** no rfc(!) ### remove this one? */
589 #define M_PROPFIND 8 /** RFC 2518: WebDAV */
590 #define M_PROPPATCH 9 /* : */
595 #define M_UNLOCK 14 /** RFC 2518: WebDAV */
596 #define M_VERSION_CONTROL 15 /** RFC 3253: WebDAV Versioning */
597 #define M_CHECKOUT 16 /* : */
598 #define M_UNCHECKOUT 17
603 #define M_MKWORKSPACE 22
604 #define M_MKACTIVITY 23
605 #define M_BASELINE_CONTROL 24
607 #define M_INVALID 26 /** no valid method */
610 * METHODS needs to be equal to the number of bits
611 * we are using for limit masks.
616 * The method mask bit to shift for anding with a bitmask.
618 #define AP_METHOD_BIT ((apr_int64_t)1)
622 /** @see ap_method_list_t */
623 typedef struct ap_method_list_t ap_method_list_t;
626 * @struct ap_method_list_t
627 * @brief Structure for handling HTTP methods.
629 * Methods known to the server are accessed via a bitmask shortcut;
630 * extension methods are handled by an array.
632 struct ap_method_list_t {
633 /** The bitmask used for known methods */
634 apr_int64_t method_mask;
635 /** the array used for extension methods */
636 apr_array_header_t *method_list;
640 * @defgroup module_magic Module Magic mime types
643 /** Magic for mod_cgi[d] */
644 #define CGI_MAGIC_TYPE "application/x-httpd-cgi"
645 /** Magic for mod_include */
646 #define INCLUDES_MAGIC_TYPE "text/x-server-parsed-html"
647 /** Magic for mod_include */
648 #define INCLUDES_MAGIC_TYPE3 "text/x-server-parsed-html3"
649 /** Magic for mod_dir */
650 #define DIR_MAGIC_TYPE "httpd/unix-directory"
653 /* Just in case your linefeed isn't the one the other end is expecting. */
654 #if !APR_CHARSET_EBCDIC
657 /** carrige return */
659 /** carrige return /Line Feed Combo */
660 #define CRLF "\015\012"
661 #else /* APR_CHARSET_EBCDIC */
662 /* For platforms using the EBCDIC charset, the transition ASCII->EBCDIC is done
663 * in the buff package (bread/bputs/bwrite). Everywhere else, we use
664 * "native EBCDIC" CR and NL characters. These are therefore
671 #endif /* APR_CHARSET_EBCDIC */
672 /** Useful for common code with either platform charset. */
673 #define CRLF_ASCII "\015\012"
676 * @defgroup values_request_rec_body Possible values for request_rec.read_body
678 * Possible values for request_rec.read_body (set by handling module):
681 /** Send 413 error if message has any body */
682 #define REQUEST_NO_BODY 0
683 /** Send 411 error if body without Content-Length */
684 #define REQUEST_CHUNKED_ERROR 1
685 /** If chunked, remove the chunks for me. */
686 #define REQUEST_CHUNKED_DECHUNK 2
687 /** @} // values_request_rec_body */
690 * @defgroup values_request_rec_used_path_info Possible values for request_rec.used_path_info
691 * @ingroup APACHE_CORE_DAEMON
693 * Possible values for request_rec.used_path_info:
696 /** Accept the path_info from the request */
697 #define AP_REQ_ACCEPT_PATH_INFO 0
698 /** Return a 404 error if path_info was given */
699 #define AP_REQ_REJECT_PATH_INFO 1
700 /** Module may chose to use the given path_info */
701 #define AP_REQ_DEFAULT_PATH_INFO 2
703 /** @} // values_request_rec_used_path_info */
707 * Things which may vary per file-lookup WITHIN a request ---
708 * e.g., state of MIME config. Basically, the name of an object, info
709 * about the object, and any other info we may ahve which may need to
710 * change as we go poking around looking for it (e.g., overridden by
713 * Note how the default state of almost all these things is properly
714 * zero, so that allocating it with pcalloc does the right thing without
715 * a whole lot of hairy initialization... so long as we are willing to
716 * make the (fairly) portable assumption that the bit pattern of a NULL
717 * pointer is, in fact, zero.
721 * @brief This represents the result of calling htaccess; these are cached for
724 struct htaccess_result {
725 /** the directory to which this applies */
727 /** the overrides allowed for the .htaccess file */
729 /** the override options allowed for the .htaccess file */
731 /** Table of allowed directives for override */
732 apr_table_t *override_list;
733 /** the configuration directives */
734 struct ap_conf_vector_t *htaccess;
735 /** the next one, or NULL if no more; N.B. never change this */
736 const struct htaccess_result *next;
739 /* The following four types define a hierarchy of activities, so that
740 * given a request_rec r you can write r->connection->server->process
741 * to get to the process_rec. While this reduces substantially the
742 * number of arguments that various hooks require beware that in
743 * threaded versions of the server you must consider multiplexing
747 /** A structure that represents one process */
748 typedef struct process_rec process_rec;
749 /** A structure that represents a virtual server */
750 typedef struct server_rec server_rec;
751 /** A structure that represents one connection */
752 typedef struct conn_rec conn_rec;
753 /** A structure that represents the current request */
754 typedef struct request_rec request_rec;
755 /** A structure that represents the status of the current connection */
756 typedef struct conn_state_t conn_state_t;
758 /* ### would be nice to not include this from httpd.h ... */
759 /* This comes after we have defined the request_rec type */
763 * @brief A structure that represents one process
766 /** Global pool. Cleared upon normal exit */
768 /** Configuration pool. Cleared upon restart */
770 /** The program name used to execute the program */
771 const char *short_name;
772 /** The command line arguments */
773 const char * const *argv;
774 /** Number of command line arguments passed to the program */
779 * @brief A structure that represents the current request
782 /** The pool associated with the request */
784 /** The connection to the client */
785 conn_rec *connection;
786 /** The virtual host for this request */
789 /** Pointer to the redirected request if this is an external redirect */
791 /** Pointer to the previous request if this is an internal redirect */
794 /** Pointer to the main request if this is a sub-request
795 * (see http_request.h) */
798 /* Info about the request itself... we begin with stuff that only
799 * protocol.c should ever touch...
801 /** First line of request */
803 /** HTTP/0.9, "simple" request (e.g. GET /foo\n w/no headers) */
805 /** A proxy request (calculated during post_read_request/translate_name)
806 * possible values PROXYREQ_NONE, PROXYREQ_PROXY, PROXYREQ_REVERSE,
810 /** HEAD request, as opposed to GET */
812 /** Protocol version number of protocol; 1.1 = 1001 */
814 /** Protocol string, as given to us, or HTTP/0.9 */
816 /** Host, as set by full URI or Host: */
817 const char *hostname;
819 /** Time when the request started */
820 apr_time_t request_time;
822 /** Status line, if set by script */
823 const char *status_line;
827 /* Request method, two ways; also, protocol, etc.. Outside of protocol.c,
828 * look, but don't touch.
831 /** M_GET, M_POST, etc. */
833 /** Request method (eg. GET, HEAD, POST, etc.) */
837 * 'allowed' is a bitvector of the allowed methods.
839 * A handler must ensure that the request method is one that
840 * it is capable of handling. Generally modules should DECLINE
841 * any request methods they do not handle. Prior to aborting the
842 * handler like this the handler should set r->allowed to the list
843 * of methods that it is willing to handle. This bitvector is used
844 * to construct the "Allow:" header required for OPTIONS requests,
845 * and HTTP_METHOD_NOT_ALLOWED and HTTP_NOT_IMPLEMENTED status codes.
847 * Since the default_handler deals with OPTIONS, all modules can
848 * usually decline to deal with OPTIONS. TRACE is always allowed,
849 * modules don't need to set it explicitly.
851 * Since the default_handler will always handle a GET, a
852 * module which does *not* implement GET should probably return
853 * HTTP_METHOD_NOT_ALLOWED. Unfortunately this means that a Script GET
854 * handler can't be installed by mod_actions.
857 /** Array of extension methods */
858 apr_array_header_t *allowed_xmethods;
859 /** List of allowed methods */
860 ap_method_list_t *allowed_methods;
862 /** byte count in stream is for body */
863 apr_off_t sent_bodyct;
864 /** body byte count, for easy access */
865 apr_off_t bytes_sent;
866 /** Last modified time of the requested resource */
869 /* HTTP/1.1 connection-level features */
871 /** The Range: header */
873 /** The "real" content length */
875 /** sending chunked transfer-coding */
878 /** Method for reading the request body
879 * (eg. REQUEST_CHUNKED_ERROR, REQUEST_NO_BODY,
880 * REQUEST_CHUNKED_DECHUNK, etc...) */
882 /** reading chunked transfer-coding */
884 /** is client waiting for a 100 response? */
885 unsigned expecting_100;
886 /** The optional kept body of the request. */
887 apr_bucket_brigade *kept_body;
888 /** For ap_body_to_table(): parsed body */
889 /* XXX: ap_body_to_table has been removed. Remove body_table too or
890 * XXX: keep it to reintroduce ap_body_to_table without major bump? */
891 apr_table_t *body_table;
892 /** Remaining bytes left to read from the request body */
894 /** Number of bytes that have been read from the request body */
895 apr_off_t read_length;
897 /* MIME header environments, in and out. Also, an array containing
898 * environment variables to be passed to subprocesses, so people can
899 * write modules to add to that environment.
901 * The difference between headers_out and err_headers_out is that the
902 * latter are printed even on error, and persist across internal redirects
903 * (so the headers printed for ErrorDocument handlers will have them).
905 * The 'notes' apr_table_t is for notes from one module to another, with no
906 * other set purpose in mind...
909 /** MIME header environment from the request */
910 apr_table_t *headers_in;
911 /** MIME header environment for the response */
912 apr_table_t *headers_out;
913 /** MIME header environment for the response, printed even on errors and
914 * persist across internal redirects */
915 apr_table_t *err_headers_out;
916 /** Array of environment variables to be used for sub processes */
917 apr_table_t *subprocess_env;
918 /** Notes from one module to another */
921 /* content_type, handler, content_encoding, and all content_languages
922 * MUST be lowercased strings. They may be pointers to static strings;
923 * they should not be modified in place.
925 /** The content-type for the current request */
926 const char *content_type; /* Break these out --- we dispatch on 'em */
927 /** The handler string that we use to call a handler function */
928 const char *handler; /* What we *really* dispatch on */
930 /** How to encode the data */
931 const char *content_encoding;
932 /** Array of strings representing the content languages */
933 apr_array_header_t *content_languages;
935 /** variant list validator (if negotiated) */
936 char *vlist_validator;
938 /** If an authentication check was made, this gets set to the user name. */
940 /** If an authentication check was made, this gets set to the auth type. */
943 /* What object is being requested (either directly, or via include
944 * or content-negotiation mapping).
947 /** The URI without any parsing performed */
949 /** The path portion of the URI, or "/" if no path provided */
951 /** The filename on disk corresponding to this response */
953 /* XXX: What does this mean? Please define "canonicalize" -aaron */
954 /** The true filename, we canonicalize r->filename if these don't match */
955 char *canonical_filename;
956 /** The PATH_INFO extracted from this request */
958 /** The QUERY_ARGS extracted from this request */
962 * Flag for the handler to accept or reject path_info on
963 * the current request. All modules should respect the
964 * AP_REQ_ACCEPT_PATH_INFO and AP_REQ_REJECT_PATH_INFO
965 * values, while AP_REQ_DEFAULT_PATH_INFO indicates they
966 * may follow existing conventions. This is set to the
967 * user's preference upon HOOK_VERY_FIRST of the fixups.
971 /** A flag to determine if the eos bucket has been sent yet */
974 /* Various other config info which may change with .htaccess files
975 * These are config vectors, with one void* pointer for each module
976 * (the thing pointed to being the module's business).
979 /** Options set in config files, etc. */
980 struct ap_conf_vector_t *per_dir_config;
981 /** Notes on *this* request */
982 struct ap_conf_vector_t *request_config;
984 /** Optional request log level configuration. Will usually point
985 * to a server or per_dir config, i.e. must be copied before
987 const struct ap_logconf *log;
989 /** Id to identify request in access and error log. Set when the first
990 * error log entry for this request is generated.
995 * A linked list of the .htaccess configuration directives
996 * accessed by this request.
997 * N.B. always add to the head of the list, _never_ to the end.
998 * that way, a sub request's list can (temporarily) point to a parent's list
1000 const struct htaccess_result *htaccess;
1002 /** A list of output filters to be used for this request */
1003 struct ap_filter_t *output_filters;
1004 /** A list of input filters to be used for this request */
1005 struct ap_filter_t *input_filters;
1007 /** A list of protocol level output filters to be used for this
1009 struct ap_filter_t *proto_output_filters;
1010 /** A list of protocol level input filters to be used for this
1012 struct ap_filter_t *proto_input_filters;
1014 /** This response can not be cached */
1016 /** There is no local copy of this response */
1019 /** Mutex protect callbacks registered with ap_mpm_register_timed_callback
1020 * from being run before the original handler finishes running
1022 apr_thread_mutex_t *invoke_mtx;
1024 /** A struct containing the components of URI */
1025 apr_uri_t parsed_uri;
1026 /** finfo.protection (st_mode) set to zero if no such file */
1029 /** remote address information from conn_rec, can be overridden if
1030 * necessary by a module.
1031 * This is the address that originated the request.
1033 apr_sockaddr_t *useragent_addr;
1038 * @defgroup ProxyReq Proxy request types
1040 * Possible values of request_rec->proxyreq. A request could be normal,
1041 * proxied or reverse proxied. Normally proxied and reverse proxied are
1042 * grouped together as just "proxied", but sometimes it's necessary to
1043 * tell the difference between the two, such as for authentication.
1047 #define PROXYREQ_NONE 0 /**< No proxy */
1048 #define PROXYREQ_PROXY 1 /**< Standard proxy */
1049 #define PROXYREQ_REVERSE 2 /**< Reverse proxy */
1050 #define PROXYREQ_RESPONSE 3 /**< Origin response */
1055 * @brief Enumeration of connection keepalive options
1061 } ap_conn_keepalive_e;
1064 * @brief Structure to store things which are per connection
1067 /** Pool associated with this connection */
1069 /** Physical vhost this conn came in on */
1070 server_rec *base_server;
1071 /** used by http_vhost.c */
1072 void *vhost_lookup_data;
1074 /* Information about the connection itself */
1075 /** local address */
1076 apr_sockaddr_t *local_addr;
1077 /** remote address; this is the end-point of the next hop, for the address
1078 * of the request creator, see useragent_addr in request_rec
1080 apr_sockaddr_t *client_addr;
1082 /** Client's IP address; this is the end-point of the next hop, for the
1083 * IP of the request creator, see useragent_ip in request_rec
1086 /** Client's DNS name, if known. NULL if DNS hasn't been checked,
1087 * "" if it has and no address was found. N.B. Only access this though
1088 * get_remote_host() */
1090 /** Only ever set if doing rfc1413 lookups. N.B. Only access this through
1091 * get_remote_logname() */
1092 char *remote_logname;
1094 /** server IP address */
1096 /** used for ap_get_server_name when UseCanonicalName is set to DNS
1097 * (ignores setting of HostnameLookups) */
1100 /** ID of this connection; unique at any point in time */
1102 /** Config vector containing pointers to connections per-server
1103 * config structures. */
1104 struct ap_conf_vector_t *conn_config;
1105 /** Notes on *this* connection: send note from one module to
1106 * another. must remain valid for all requests on this conn */
1108 /** A list of input filters to be used for this connection */
1109 struct ap_filter_t *input_filters;
1110 /** A list of output filters to be used for this connection */
1111 struct ap_filter_t *output_filters;
1112 /** handle to scoreboard information for this connection */
1114 /** The bucket allocator to use for all bucket/brigade creations */
1115 struct apr_bucket_alloc_t *bucket_alloc;
1116 /** The current state of this connection; may be NULL if not used by MPM */
1118 /** Is there data pending in the input filters? */
1119 int data_in_input_filters;
1120 /** Is there data pending in the output filters? */
1121 int data_in_output_filters;
1123 /** Are there any filters that clogg/buffer the input stream, breaking
1126 unsigned int clogging_input_filters:1;
1128 /** have we done double-reverse DNS? -1 yes/failure, 0 not yet,
1130 signed int double_reverse:2;
1132 /** Are we still talking? */
1135 /** Are we going to keep the connection alive for another request?
1136 * @see ap_conn_keepalive_e */
1137 ap_conn_keepalive_e keepalive;
1139 /** How many times have we used it? */
1142 /** Optional connection log level configuration. May point to a server or
1143 * per_dir config, i.e. must be copied before modifying */
1144 const struct ap_logconf *log;
1146 /** Id to identify this connection in error log. Set when the first
1147 * error log entry for this connection is generated.
1152 /** This points to the current thread being used to process this request,
1153 * over the lifetime of a request, the value may change. Users of the connection
1154 * record should not rely upon it staying the same between calls that involve
1158 apr_thread_t *current_thread;
1163 * Enumeration of connection states
1164 * The two states CONN_STATE_LINGER_NORMAL and CONN_STATE_LINGER_SHORT may
1165 * only be set by the MPM. Use CONN_STATE_LINGER outside of the MPM.
1168 CONN_STATE_CHECK_REQUEST_LINE_READABLE,
1169 CONN_STATE_READ_REQUEST_LINE,
1171 CONN_STATE_WRITE_COMPLETION,
1172 CONN_STATE_SUSPENDED,
1173 CONN_STATE_LINGER, /* connection may be closed with lingering */
1174 CONN_STATE_LINGER_NORMAL, /* MPM has started lingering close with normal timeout */
1175 CONN_STATE_LINGER_SHORT /* MPM has started lingering close with short timeout */
1179 * @brief A structure to contain connection state information
1181 struct conn_state_t {
1182 /** Current state of the connection */
1186 /* Per-vhost config... */
1189 * The address 255.255.255.255, when used as a virtualhost address,
1190 * will become the "default" server when the ip doesn't match other vhosts.
1192 #define DEFAULT_VHOST_ADDR 0xfffffffful
1196 * @struct server_addr_rec
1197 * @brief A structure to be used for Per-vhost config
1199 typedef struct server_addr_rec server_addr_rec;
1200 struct server_addr_rec {
1201 /** The next server in the list */
1202 server_addr_rec *next;
1203 /** The name given in "<VirtualHost>" */
1205 /** The bound address, for this server */
1206 apr_sockaddr_t *host_addr;
1207 /** The bound port, for this server */
1208 apr_port_t host_port;
1212 /** The per-module log levels */
1213 signed char *module_levels;
1215 /** The log level for this server */
1219 * @brief A structure to store information for each virtual server
1222 /** The process this server is running in */
1223 process_rec *process;
1224 /** The next server in the list */
1227 /* Log files --- note that transfer log is now in the modules... */
1229 /** The name of the error log */
1231 /** A file descriptor that references the error log */
1232 apr_file_t *error_log;
1233 /** The log level configuration */
1234 struct ap_logconf log;
1236 /* Module-specific configuration for server, and defaults... */
1238 /** Config vector containing pointers to modules' per-server config
1240 struct ap_conf_vector_t *module_config;
1241 /** MIME type info, etc., before we start checking per-directory info */
1242 struct ap_conf_vector_t *lookup_defaults;
1244 /** The name of the server */
1245 const char *defn_name;
1246 /** The line of the config file that the server was defined on */
1247 unsigned defn_line_number;
1248 /** true if this is the virtual server */
1252 /* Information for redirects */
1254 /** for redirects, etc. */
1256 /** The server request scheme for redirect responses */
1257 const char *server_scheme;
1259 /* Contact information */
1261 /** The admin's contact information */
1263 /** The server hostname */
1264 char *server_hostname;
1266 /* Transaction handling */
1268 /** I haven't got a clue */
1269 server_addr_rec *addrs;
1270 /** Timeout, as an apr interval, before we give up */
1271 apr_interval_time_t timeout;
1272 /** The apr interval we will wait for another request */
1273 apr_interval_time_t keep_alive_timeout;
1274 /** Maximum requests per connection */
1276 /** Use persistent connections? */
1279 /** Normal names for ServerAlias servers */
1280 apr_array_header_t *names;
1281 /** Wildcarded names for ServerAlias servers */
1282 apr_array_header_t *wild_names;
1284 /** Pathname for ServerPath */
1286 /** Length of path */
1289 /** limit on size of the HTTP request line */
1291 /** limit on size of any request header field */
1292 int limit_req_fieldsize;
1293 /** limit on number of request header fields */
1294 int limit_req_fields;
1297 /** Opaque storage location */
1302 * @struct ap_sload_t
1303 * @brief A structure to hold server load params
1305 typedef struct ap_sload_t ap_sload_t;
1307 /* percentage of process/threads ready/idle (0->100)*/
1309 /* percentage of process/threads busy (0->100) */
1311 /* total bytes served */
1312 apr_off_t bytes_served;
1313 /* total access count */
1314 unsigned long access_count;
1318 * @struct ap_loadavg_t
1319 * @brief A structure to hold various server loadavg
1321 typedef struct ap_loadavg_t ap_loadavg_t;
1322 struct ap_loadavg_t {
1323 /* current loadavg, ala getloadavg() */
1327 /* 15 min loadavg */
1332 * Get the context_document_root for a request. This is a generalization of
1333 * the document root, which is too limited in the presence of mappers like
1334 * mod_userdir and mod_alias. The context_document_root is the directory
1335 * on disk that maps to the context_prefix URI prefix.
1336 * @param r The request
1337 * @note For resources that do not map to the file system or for very complex
1338 * mappings, this information may still be wrong.
1340 AP_DECLARE(const char *) ap_context_document_root(request_rec *r);
1343 * Get the context_prefix for a request. The context_prefix URI prefix
1344 * maps to the context_document_root on disk.
1345 * @param r The request
1347 AP_DECLARE(const char *) ap_context_prefix(request_rec *r);
1349 /** Set context_prefix and context_document_root for a request.
1350 * @param r The request
1351 * @param prefix the URI prefix, without trailing slash
1352 * @param document_root the corresponding directory on disk, without trailing
1354 * @note If one of prefix of document_root is NULL, the corrsponding
1355 * property will not be changed.
1357 AP_DECLARE(void) ap_set_context_info(request_rec *r, const char *prefix,
1358 const char *document_root);
1360 /** Set per-request document root. This is for mass virtual hosting modules
1361 * that want to provide the correct DOCUMENT_ROOT value to scripts.
1362 * @param r The request
1363 * @param document_root the document root for the request.
1365 AP_DECLARE(void) ap_set_document_root(request_rec *r, const char *document_root);
1368 * Examine a field value (such as a media-/content-type) string and return
1369 * it sans any parameters; e.g., strip off any ';charset=foo' and the like.
1370 * @param p Pool to allocate memory from
1371 * @param intype The field to examine
1372 * @return A copy of the field minus any parameters
1374 AP_DECLARE(char *) ap_field_noparam(apr_pool_t *p, const char *intype);
1377 * Convert a time from an integer into a string in a specified format
1378 * @param p The pool to allocate memory from
1379 * @param t The time to convert
1380 * @param fmt The format to use for the conversion
1381 * @param gmt Convert the time for GMT?
1382 * @return The string that represents the specified time
1384 AP_DECLARE(char *) ap_ht_time(apr_pool_t *p, apr_time_t t, const char *fmt, int gmt);
1386 /* String handling. The *_nc variants allow you to use non-const char **s as
1387 arguments (unfortunately C won't automatically convert a char ** to a const
1391 * Get the characters until the first occurance of a specified character
1392 * @param p The pool to allocate memory from
1393 * @param line The string to get the characters from
1394 * @param stop The character to stop at
1395 * @return A copy of the characters up to the first stop character
1397 AP_DECLARE(char *) ap_getword(apr_pool_t *p, const char **line, char stop);
1400 * Get the characters until the first occurance of a specified character
1401 * @param p The pool to allocate memory from
1402 * @param line The string to get the characters from
1403 * @param stop The character to stop at
1404 * @return A copy of the characters up to the first stop character
1405 * @note This is the same as ap_getword(), except it doesn't use const char **.
1407 AP_DECLARE(char *) ap_getword_nc(apr_pool_t *p, char **line, char stop);
1410 * Get the first word from a given string. A word is defined as all characters
1411 * up to the first whitespace.
1412 * @param p The pool to allocate memory from
1413 * @param line The string to traverse
1414 * @return The first word in the line
1416 AP_DECLARE(char *) ap_getword_white(apr_pool_t *p, const char **line);
1419 * Get the first word from a given string. A word is defined as all characters
1420 * up to the first whitespace.
1421 * @param p The pool to allocate memory from
1422 * @param line The string to traverse
1423 * @return The first word in the line
1424 * @note The same as ap_getword_white(), except it doesn't use const char**
1426 AP_DECLARE(char *) ap_getword_white_nc(apr_pool_t *p, char **line);
1429 * Get all characters from the first occurance of @a stop to the first "\0"
1430 * @param p The pool to allocate memory from
1431 * @param line The line to traverse
1432 * @param stop The character to start at
1433 * @return A copy of all caracters after the first occurance of the specified
1436 AP_DECLARE(char *) ap_getword_nulls(apr_pool_t *p, const char **line,
1440 * Get all characters from the first occurance of @a stop to the first "\0"
1441 * @param p The pool to allocate memory from
1442 * @param line The line to traverse
1443 * @param stop The character to start at
1444 * @return A copy of all caracters after the first occurance of the specified
1446 * @note The same as ap_getword_nulls(), except it doesn't use const char **.
1448 AP_DECLARE(char *) ap_getword_nulls_nc(apr_pool_t *p, char **line, char stop);
1451 * Get the second word in the string paying attention to quoting
1452 * @param p The pool to allocate from
1453 * @param line The line to traverse
1454 * @return A copy of the string
1456 AP_DECLARE(char *) ap_getword_conf(apr_pool_t *p, const char **line);
1459 * Get the second word in the string paying attention to quoting
1460 * @param p The pool to allocate from
1461 * @param line The line to traverse
1462 * @return A copy of the string
1463 * @note The same as ap_getword_conf(), except it doesn't use const char **.
1465 AP_DECLARE(char *) ap_getword_conf_nc(apr_pool_t *p, char **line);
1468 * Check a string for any config define or environment variable construct
1469 * and replace each of them by the value of that variable, if it exists.
1470 * The default syntax of the constructs is ${ENV} but can be changed by
1471 * setting the define::* config defines. If the variable does not exist,
1472 * leave the ${ENV} construct alone but print a warning.
1473 * @param p The pool to allocate from
1474 * @param word The string to check
1475 * @return The string with the replaced environment variables
1477 AP_DECLARE(const char *) ap_resolve_env(apr_pool_t *p, const char * word);
1480 * Size an HTTP header field list item, as separated by a comma.
1481 * @param field The field to size
1482 * @param len The length of the field
1483 * @return The return value is a pointer to the beginning of the non-empty
1484 * list item within the original string (or NULL if there is none) and the
1485 * address of field is shifted to the next non-comma, non-whitespace
1486 * character. len is the length of the item excluding any beginning whitespace.
1488 AP_DECLARE(const char *) ap_size_list_item(const char **field, int *len);
1491 * Retrieve an HTTP header field list item, as separated by a comma,
1492 * while stripping insignificant whitespace and lowercasing anything not in
1493 * a quoted string or comment.
1494 * @param p The pool to allocate from
1495 * @param field The field to retrieve
1496 * @return The return value is a new string containing the converted list
1497 * item (or NULL if none) and the address pointed to by field is
1498 * shifted to the next non-comma, non-whitespace.
1500 AP_DECLARE(char *) ap_get_list_item(apr_pool_t *p, const char **field);
1503 * Find an item in canonical form (lowercase, no extra spaces) within
1504 * an HTTP field value list.
1505 * @param p The pool to allocate from
1506 * @param line The field value list to search
1507 * @param tok The token to search for
1508 * @return 1 if found, 0 if not found.
1510 AP_DECLARE(int) ap_find_list_item(apr_pool_t *p, const char *line, const char *tok);
1513 * Retrieve a token, spacing over it and adjusting the pointer to
1514 * the first non-white byte afterwards. Note that these tokens
1515 * are delimited by semis and commas and can also be delimited
1516 * by whitespace at the caller's option.
1517 * @param p The pool to allocate from
1518 * @param accept_line The line to retrieve the token from (adjusted afterwards)
1519 * @param accept_white Is it delimited by whitespace
1522 AP_DECLARE(char *) ap_get_token(apr_pool_t *p, const char **accept_line, int accept_white);
1525 * Find http tokens, see the definition of token from RFC2068
1526 * @param p The pool to allocate from
1527 * @param line The line to find the token
1528 * @param tok The token to find
1529 * @return 1 if the token is found, 0 otherwise
1531 AP_DECLARE(int) ap_find_token(apr_pool_t *p, const char *line, const char *tok);
1534 * find http tokens from the end of the line
1535 * @param p The pool to allocate from
1536 * @param line The line to find the token
1537 * @param tok The token to find
1538 * @return 1 if the token is found, 0 otherwise
1540 AP_DECLARE(int) ap_find_last_token(apr_pool_t *p, const char *line, const char *tok);
1543 * Check for an Absolute URI syntax
1544 * @param u The string to check
1545 * @return 1 if URI, 0 otherwise
1547 AP_DECLARE(int) ap_is_url(const char *u);
1551 * @param url The string to unescape
1552 * @return 0 on success, non-zero otherwise
1554 AP_DECLARE(int) ap_unescape_all(char *url);
1558 * @param url The url to unescape
1559 * @return 0 on success, non-zero otherwise
1561 AP_DECLARE(int) ap_unescape_url(char *url);
1564 * Unescape a URL, but leaving %2f (slashes) escaped
1565 * @param url The url to unescape
1566 * @param decode_slashes Whether or not slashes should be decoded
1567 * @return 0 on success, non-zero otherwise
1569 AP_DECLARE(int) ap_unescape_url_keep2f(char *url, int decode_slashes);
1572 * Unescape an application/x-www-form-urlencoded string
1573 * @param query The query to unescape
1574 * @return 0 on success, non-zero otherwise
1576 AP_DECLARE(int) ap_unescape_urlencoded(char *query);
1579 * Convert all double slashes to single slashes
1580 * @param name The string to convert
1582 AP_DECLARE(void) ap_no2slash(char *name);
1585 * Remove all ./ and xx/../ substrings from a file name. Also remove
1586 * any leading ../ or /../ substrings.
1587 * @param name the file name to parse
1589 AP_DECLARE(void) ap_getparents(char *name);
1592 * Escape a path segment, as defined in RFC 1808
1593 * @param p The pool to allocate from
1594 * @param s The path to convert
1595 * @return The converted URL
1597 AP_DECLARE(char *) ap_escape_path_segment(apr_pool_t *p, const char *s);
1600 * Escape a path segment, as defined in RFC 1808, to a preallocated buffer.
1601 * @param c The preallocated buffer to write to
1602 * @param s The path to convert
1603 * @return The converted URL (c)
1605 AP_DECLARE(char *) ap_escape_path_segment_buffer(char *c, const char *s);
1608 * convert an OS path to a URL in an OS dependent way.
1609 * @param p The pool to allocate from
1610 * @param path The path to convert
1611 * @param partial if set, assume that the path will be appended to something
1612 * with a '/' in it (and thus does not prefix "./").
1613 * If not set, there will be one byte of additional space after the
1614 * NUL, to allow the caller to append a '/'.
1615 * @return The converted URL
1617 AP_DECLARE(char *) ap_os_escape_path(apr_pool_t *p, const char *path, int partial);
1619 /** @see ap_os_escape_path */
1620 #define ap_escape_uri(ppool,path) ap_os_escape_path(ppool,path,1)
1623 * Escape a string as application/x-www-form-urlencoded
1624 * @param p The pool to allocate from
1625 * @param s The path to convert
1626 * @return The converted URL
1628 AP_DECLARE(char *) ap_escape_urlencoded(apr_pool_t *p, const char *s);
1631 * Escape a string as application/x-www-form-urlencoded, to a preallocated buffer
1632 * @param c The preallocated buffer to write to
1633 * @param s The path to convert
1634 * @return The converted URL (c)
1636 AP_DECLARE(char *) ap_escape_urlencoded_buffer(char *c, const char *s);
1639 * Escape an html string
1640 * @param p The pool to allocate from
1641 * @param s The html to escape
1642 * @return The escaped string
1644 #define ap_escape_html(p,s) ap_escape_html2(p,s,0)
1646 * Escape an html string
1647 * @param p The pool to allocate from
1648 * @param s The html to escape
1649 * @param toasc Whether to escape all non-ASCII chars to \&\#nnn;
1650 * @return The escaped string
1652 AP_DECLARE(char *) ap_escape_html2(apr_pool_t *p, const char *s, int toasc);
1655 * Escape a string for logging
1656 * @param p The pool to allocate from
1657 * @param str The string to escape
1658 * @return The escaped string
1660 AP_DECLARE(char *) ap_escape_logitem(apr_pool_t *p, const char *str);
1663 * Escape a string for logging into the error log (without a pool)
1664 * @param dest The buffer to write to
1665 * @param source The string to escape
1666 * @param buflen The buffer size for the escaped string (including "\0")
1667 * @return The len of the escaped string (always < maxlen)
1669 AP_DECLARE(apr_size_t) ap_escape_errorlog_item(char *dest, const char *source,
1673 * Construct a full hostname
1674 * @param p The pool to allocate from
1675 * @param hostname The hostname of the server
1676 * @param port The port the server is running on
1677 * @param r The current request
1678 * @return The server's hostname
1680 AP_DECLARE(char *) ap_construct_server(apr_pool_t *p, const char *hostname,
1681 apr_port_t port, const request_rec *r);
1684 * Escape a shell command
1685 * @param p The pool to allocate from
1686 * @param s The command to escape
1687 * @return The escaped shell command
1689 AP_DECLARE(char *) ap_escape_shell_cmd(apr_pool_t *p, const char *s);
1692 * Count the number of directories in a path
1693 * @param path The path to count
1694 * @return The number of directories
1696 AP_DECLARE(int) ap_count_dirs(const char *path);
1699 * Copy at most @a n leading directories of @a s into @a d. @a d
1700 * should be at least as large as @a s plus 1 extra byte
1702 * @param d The location to copy to
1703 * @param s The location to copy from
1704 * @param n The number of directories to copy
1705 * @return value is the ever useful pointer to the trailing "\0" of d
1706 * @note on platforms with drive letters, n = 0 returns the "/" root,
1707 * whereas n = 1 returns the "d:/" root. On all other platforms, n = 0
1708 * returns the empty string. */
1709 AP_DECLARE(char *) ap_make_dirstr_prefix(char *d, const char *s, int n);
1712 * Return the parent directory name (including trailing /) of the file
1714 * @param p The pool to allocate from
1715 * @param s The file to get the parent of
1716 * @return A copy of the file's parent directory
1718 AP_DECLARE(char *) ap_make_dirstr_parent(apr_pool_t *p, const char *s);
1721 * Given a directory and filename, create a single path from them. This
1722 * function is smart enough to ensure that there is a single '/' between the
1723 * directory and file names
1724 * @param a The pool to allocate from
1725 * @param dir The directory name
1726 * @param f The filename
1727 * @return A copy of the full path, with one byte of extra space after the NUL
1728 * to allow the caller to add a trailing '/'.
1729 * @note Never consider using this function if you are dealing with filesystem
1730 * names that need to remain canonical, unless you are merging an apr_dir_read
1731 * path and returned filename. Otherwise, the result is not canonical.
1733 AP_DECLARE(char *) ap_make_full_path(apr_pool_t *a, const char *dir, const char *f);
1736 * Test if the given path has an an absolute path.
1737 * @param p The pool to allocate from
1738 * @param dir The directory name
1739 * @note The converse is not necessarily true, some OS's (Win32/OS2/Netware) have
1740 * multiple forms of absolute paths. This only reports if the path is absolute
1741 * in a canonical sense.
1743 AP_DECLARE(int) ap_os_is_path_absolute(apr_pool_t *p, const char *dir);
1746 * Does the provided string contain wildcard characters? This is useful
1747 * for determining if the string should be passed to strcmp_match or to strcmp.
1748 * The only wildcard characters recognized are '?' and '*'
1749 * @param str The string to check
1750 * @return 1 if the string has wildcards, 0 otherwise
1752 AP_DECLARE(int) ap_is_matchexp(const char *str);
1755 * Determine if a string matches a patterm containing the wildcards '?' or '*'
1756 * @param str The string to check
1757 * @param expected The pattern to match against
1758 * @return 0 if the two strings match, 1 otherwise
1760 AP_DECLARE(int) ap_strcmp_match(const char *str, const char *expected);
1763 * Determine if a string matches a patterm containing the wildcards '?' or '*',
1765 * @param str The string to check
1766 * @param expected The pattern to match against
1767 * @return 0 if the two strings match, 1 otherwise
1769 AP_DECLARE(int) ap_strcasecmp_match(const char *str, const char *expected);
1772 * Find the first occurrence of the substring s2 in s1, regardless of case
1773 * @param s1 The string to search
1774 * @param s2 The substring to search for
1775 * @return A pointer to the beginning of the substring
1776 * @remark See apr_strmatch() for a faster alternative
1778 AP_DECLARE(char *) ap_strcasestr(const char *s1, const char *s2);
1781 * Return a pointer to the location inside of bigstring immediately after prefix
1782 * @param bigstring The input string
1783 * @param prefix The prefix to strip away
1784 * @return A pointer relative to bigstring after prefix
1786 AP_DECLARE(const char *) ap_stripprefix(const char *bigstring,
1787 const char *prefix);
1790 * Decode a base64 encoded string into memory allocated from a pool
1791 * @param p The pool to allocate from
1792 * @param bufcoded The encoded string
1793 * @return The decoded string
1795 AP_DECLARE(char *) ap_pbase64decode(apr_pool_t *p, const char *bufcoded);
1798 * Encode a string into memory allocated from a pool in base 64 format
1799 * @param p The pool to allocate from
1800 * @param string The plaintext string
1801 * @return The encoded string
1803 AP_DECLARE(char *) ap_pbase64encode(apr_pool_t *p, char *string);
1806 * Compile a regular expression to be used later. The regex is freed when
1807 * the pool is destroyed.
1808 * @param p The pool to allocate from
1809 * @param pattern the regular expression to compile
1810 * @param cflags The bitwise or of one or more of the following:
1811 * @li REG_EXTENDED - Use POSIX extended Regular Expressions
1812 * @li REG_ICASE - Ignore case
1813 * @li REG_NOSUB - Support for substring addressing of matches
1815 * @li REG_NEWLINE - Match-any-character operators don't match new-line
1816 * @return The compiled regular expression
1818 AP_DECLARE(ap_regex_t *) ap_pregcomp(apr_pool_t *p, const char *pattern,
1822 * Free the memory associated with a compiled regular expression
1823 * @param p The pool the regex was allocated from
1824 * @param reg The regular expression to free
1825 * @note This function is only necessary if the regex should be cleaned
1826 * up before the pool
1828 AP_DECLARE(void) ap_pregfree(apr_pool_t *p, ap_regex_t *reg);
1831 * After performing a successful regex match, you may use this function to
1832 * perform a series of string substitutions based on subexpressions that were
1833 * matched during the call to ap_regexec. This function is limited to
1834 * result strings of 64K. Consider using ap_pregsub_ex() instead.
1835 * @param p The pool to allocate from
1836 * @param input An arbitrary string containing $1 through $9. These are
1837 * replaced with the corresponding matched sub-expressions
1838 * @param source The string that was originally matched to the regex
1839 * @param nmatch the nmatch returned from ap_pregex
1840 * @param pmatch the pmatch array returned from ap_pregex
1841 * @return The substituted string, or NULL on error
1843 AP_DECLARE(char *) ap_pregsub(apr_pool_t *p, const char *input,
1844 const char *source, apr_size_t nmatch,
1845 ap_regmatch_t pmatch[]);
1848 * After performing a successful regex match, you may use this function to
1849 * perform a series of string substitutions based on subexpressions that were
1850 * matched during the call to ap_regexec
1851 * @param p The pool to allocate from
1852 * @param result where to store the result, will be set to NULL on error
1853 * @param input An arbitrary string containing $1 through $9. These are
1854 * replaced with the corresponding matched sub-expressions
1855 * @param source The string that was originally matched to the regex
1856 * @param nmatch the nmatch returned from ap_pregex
1857 * @param pmatch the pmatch array returned from ap_pregex
1858 * @param maxlen the maximum string length to return, 0 for unlimited
1859 * @return The substituted string, or NULL on error
1861 AP_DECLARE(apr_status_t) ap_pregsub_ex(apr_pool_t *p, char **result,
1862 const char *input, const char *source,
1864 ap_regmatch_t pmatch[],
1868 * We want to downcase the type/subtype for comparison purposes
1869 * but nothing else because ;parameter=foo values are case sensitive.
1870 * @param s The content-type to convert to lowercase
1872 AP_DECLARE(void) ap_content_type_tolower(char *s);
1875 * convert a string to all lowercase
1876 * @param s The string to convert to lowercase
1878 AP_DECLARE(void) ap_str_tolower(char *s);
1881 * convert a string to all uppercase
1882 * @param s The string to convert to uppercase
1884 AP_DECLARE(void) ap_str_toupper(char *s);
1887 * Search a string from left to right for the first occurrence of a
1888 * specific character
1889 * @param str The string to search
1890 * @param c The character to search for
1891 * @return The index of the first occurrence of c in str
1893 AP_DECLARE(int) ap_ind(const char *str, char c); /* Sigh... */
1896 * Search a string from right to left for the first occurrence of a
1897 * specific character
1898 * @param str The string to search
1899 * @param c The character to search for
1900 * @return The index of the first occurrence of c in str
1902 AP_DECLARE(int) ap_rind(const char *str, char c);
1905 * Given a string, replace any bare " with \\" .
1906 * @param p The pool to allocate memory from
1907 * @param instring The string to search for "
1908 * @return A copy of the string with escaped quotes
1910 AP_DECLARE(char *) ap_escape_quotes(apr_pool_t *p, const char *instring);
1913 * Given a string, append the PID deliminated by delim.
1914 * Usually used to create a pid-appended filepath name
1915 * (eg: /a/b/foo -> /a/b/foo.6726). A function, and not
1916 * a macro, to avoid unistd.h dependency
1917 * @param p The pool to allocate memory from
1918 * @param string The string to append the PID to
1919 * @param delim The string to use to deliminate the string from the PID
1920 * @return A copy of the string with the PID appended
1922 AP_DECLARE(char *) ap_append_pid(apr_pool_t *p, const char *string,
1926 * Parse a given timeout parameter string into an apr_interval_time_t value.
1927 * The unit of the time interval is given as postfix string to the numeric
1928 * string. Currently the following units are understood:
1935 * If no unit is contained in the given timeout parameter the default_time_unit
1936 * will be used instead.
1937 * @param timeout_parameter The string containing the timeout parameter.
1938 * @param timeout The timeout value to be returned.
1939 * @param default_time_unit The default time unit to use if none is specified
1940 * in timeout_parameter.
1941 * @return Status value indicating whether the parsing was successful or not.
1943 AP_DECLARE(apr_status_t) ap_timeout_parameter_parse(
1944 const char *timeout_parameter,
1945 apr_interval_time_t *timeout,
1946 const char *default_time_unit);
1949 * Determine if a request has a request body or not.
1951 * @param r the request_rec of the request
1952 * @return truth value
1954 AP_DECLARE(int) ap_request_has_body(request_rec *r);
1957 * Cleanup a string (mainly to be filesystem safe)
1958 * We only allow '_' and alphanumeric chars. Non-printable
1959 * map to 'x' and all others map to '_'
1961 * @param p pool to use to allocate dest
1962 * @param src string to clean up
1963 * @param dest cleaned up, allocated string
1964 * @return Status value indicating whether the cleaning was successful or not.
1966 AP_DECLARE(apr_status_t) ap_pstr2_alnum(apr_pool_t *p, const char *src,
1970 * Cleanup a string (mainly to be filesystem safe)
1971 * We only allow '_' and alphanumeric chars. Non-printable
1972 * map to 'x' and all others map to '_'
1974 * @param src string to clean up
1975 * @param dest cleaned up, pre-allocated string
1976 * @return Status value indicating whether the cleaning was successful or not.
1978 AP_DECLARE(apr_status_t) ap_str2_alnum(const char *src, char *dest);
1981 * Structure to store the contents of an HTTP form of the type
1982 * application/x-www-form-urlencoded.
1984 * Currently it contains the name as a char* of maximum length
1985 * HUGE_STRING_LEN, and a value in the form of a bucket brigade
1986 * of arbitrary length.
1990 apr_bucket_brigade *value;
1994 * Read the body and parse any form found, which must be of the
1995 * type application/x-www-form-urlencoded.
1996 * @param r request containing POSTed form data
1998 * @param ptr returned array of ap_form_pair_t
1999 * @param num max num of params or -1 for unlimited
2000 * @param size max size allowed for parsed data
2001 * @return OK or HTTP error
2003 AP_DECLARE(int) ap_parse_form_data(request_rec *r, struct ap_filter_t *f,
2004 apr_array_header_t **ptr,
2005 apr_size_t num, apr_size_t size);
2007 /* Misc system hackery */
2009 * Given the name of an object in the file system determine if it is a directory
2010 * @param p The pool to allocate from
2011 * @param name The name of the object to check
2012 * @return 1 if it is a directory, 0 otherwise
2014 AP_DECLARE(int) ap_is_rdirectory(apr_pool_t *p, const char *name);
2017 * Given the name of an object in the file system determine if it is a directory - this version is symlink aware
2018 * @param p The pool to allocate from
2019 * @param name The name of the object to check
2020 * @return 1 if it is a directory, 0 otherwise
2022 AP_DECLARE(int) ap_is_directory(apr_pool_t *p, const char *name);
2025 extern int os_init_job_environment(server_rec *s, const char *user_name, int one_process);
2026 #endif /* _OSD_POSIX */
2029 * Determine the local host name for the current machine
2030 * @param p The pool to allocate from
2031 * @return A copy of the local host name
2033 char *ap_get_local_host(apr_pool_t *p);
2036 * Log an assertion to the error log
2037 * @param szExp The assertion that failed
2038 * @param szFile The file the assertion is in
2039 * @param nLine The line the assertion is defined on
2041 AP_DECLARE(void) ap_log_assert(const char *szExp, const char *szFile, int nLine)
2042 __attribute__((noreturn));
2045 * @internal Internal Assert function
2047 #define ap_assert(exp) ((exp) ? (void)0 : ap_log_assert(#exp,__FILE__,__LINE__))
2050 * Redefine assert() to something more useful for an Apache...
2052 * Use ap_assert() if the condition should always be checked.
2053 * Use AP_DEBUG_ASSERT() if the condition should only be checked when AP_DEBUG
2057 #define AP_DEBUG_ASSERT(exp) ap_assert(exp)
2059 #define AP_DEBUG_ASSERT(exp) ((void)0)
2063 * @defgroup stopsignal Flags which indicate places where the server should stop for debugging.
2065 * A set of flags which indicate places where the server should raise(SIGSTOP).
2066 * This is useful for debugging, because you can then attach to that process
2067 * with gdb and continue. This is important in cases where one_process
2068 * debugging isn't possible.
2070 /** stop on a Detach */
2071 #define SIGSTOP_DETACH 1
2072 /** stop making a child process */
2073 #define SIGSTOP_MAKE_CHILD 2
2074 /** stop spawning a child process */
2075 #define SIGSTOP_SPAWN_CHILD 4
2076 /** stop spawning a child process with a piped log */
2077 #define SIGSTOP_PIPED_LOG_SPAWN 8
2078 /** stop spawning a CGI child process */
2079 #define SIGSTOP_CGI_CHILD 16
2081 /** Macro to get GDB started */
2082 #ifdef DEBUG_SIGSTOP
2083 extern int raise_sigstop_flags;
2084 #define RAISE_SIGSTOP(x) do { \
2085 if (raise_sigstop_flags & SIGSTOP_##x) raise(SIGSTOP);\
2088 #define RAISE_SIGSTOP(x)
2092 * Get HTML describing the address and (optionally) admin of the server.
2093 * @param prefix Text which is prepended to the return value
2094 * @param r The request_rec
2095 * @return HTML describing the server, allocated in @a r's pool.
2097 AP_DECLARE(const char *) ap_psignature(const char *prefix, request_rec *r);
2099 /** strtoul does not exist on sunos4. */
2103 #define strtoul strtoul_is_not_a_portable_function_use_strtol_instead
2105 /* The C library has functions that allow const to be silently dropped ...
2106 these macros detect the drop in maintainer mode, but use the native
2107 methods for normal builds
2109 Note that on some platforms (e.g., AIX with gcc, Solaris with gcc), string.h needs
2110 to be included before the macros are defined or compilation will fail.
2114 AP_DECLARE(char *) ap_strchr(char *s, int c);
2115 AP_DECLARE(const char *) ap_strchr_c(const char *s, int c);
2116 AP_DECLARE(char *) ap_strrchr(char *s, int c);
2117 AP_DECLARE(const char *) ap_strrchr_c(const char *s, int c);
2118 AP_DECLARE(char *) ap_strstr(char *s, const char *c);
2119 AP_DECLARE(const char *) ap_strstr_c(const char *s, const char *c);
2120 AP_DECLARE(void *) ap_palloc_debug(apr_pool_t *p, apr_size_t size);
2121 AP_DECLARE(void *) ap_pcalloc_debug(apr_pool_t *p, apr_size_t size);
2126 # define strchr(s, c) ap_strchr(s,c)
2128 # define strrchr(s, c) ap_strrchr(s,c)
2130 # define strstr(s, c) ap_strstr(s,c)
2132 #ifndef AP_DEBUG_NO_ALLOC_POISON
2134 * ap_palloc_debug initializes allocated memory to non-zero
2136 #define apr_palloc ap_palloc_debug
2138 * this is necessary to avoid useless double memset of memory
2139 * with ap_palloc_debug
2144 #define apr_pcalloc ap_pcalloc_debug
2149 /** use this instead of strchr */
2150 # define ap_strchr(s, c) strchr(s, c)
2151 /** use this instead of strchr */
2152 # define ap_strchr_c(s, c) strchr(s, c)
2153 /** use this instead of strrchr */
2154 # define ap_strrchr(s, c) strrchr(s, c)
2155 /** use this instead of strrchr */
2156 # define ap_strrchr_c(s, c) strrchr(s, c)
2157 /** use this instead of strrstr*/
2158 # define ap_strstr(s, c) strstr(s, c)
2159 /** use this instead of strrstr*/
2160 # define ap_strstr_c(s, c) strstr(s, c)
2165 * Generate pseudo random bytes.
2166 * This is a convenience interface to apr_random. It is cheaper but less
2167 * secure than apr_generate_random_bytes().
2168 * @param buf where to store the bytes
2169 * @param size number of bytes to generate
2170 * @note ap_random_insecure_bytes() is thread-safe, it uses a mutex on
2173 AP_DECLARE(void) ap_random_insecure_bytes(void *buf, apr_size_t size);
2176 * Get a pseudo random number in a range.
2177 * @param min low end of range
2178 * @param max high end of range
2179 * @return a number in the range
2181 AP_DECLARE(apr_uint32_t) ap_random_pick(apr_uint32_t min, apr_uint32_t max);
2184 * Abort with a error message signifying out of memory
2186 AP_DECLARE(void) ap_abort_on_oom(void) __attribute__((noreturn));
2189 * Wrapper for malloc() that calls ap_abort_on_oom() if out of memory
2190 * @param size size of the memory block
2191 * @return pointer to the allocated memory
2192 * @note ap_malloc may be implemented as a macro
2194 AP_DECLARE(void *) ap_malloc(size_t size)
2195 __attribute__((malloc))
2196 AP_FN_ATTR_ALLOC_SIZE(1);
2199 * Wrapper for calloc() that calls ap_abort_on_oom() if out of memory
2200 * @param nelem number of elements to allocate memory for
2201 * @param size size of a single element
2202 * @return pointer to the allocated memory
2203 * @note ap_calloc may be implemented as a macro
2205 AP_DECLARE(void *) ap_calloc(size_t nelem, size_t size)
2206 __attribute__((malloc))
2207 AP_FN_ATTR_ALLOC_SIZE2(1,2);
2210 * Wrapper for realloc() that calls ap_abort_on_oom() if out of memory
2211 * @param ptr pointer to the old memory block (or NULL)
2212 * @param size new size of the memory block
2213 * @return pointer to the reallocated memory
2214 * @note ap_realloc may be implemented as a macro
2216 AP_DECLARE(void *) ap_realloc(void *ptr, size_t size)
2217 AP_FN_ATTR_WARN_UNUSED_RESULT
2218 AP_FN_ATTR_ALLOC_SIZE(2);
2221 * Get server load params
2222 * @param ld struct to populate: -1 in fields means error
2224 AP_DECLARE(void) ap_get_sload(ap_sload_t *ld);
2227 * Get server load averages (ala getloadavg)
2228 * @param ld struct to populate: -1 in fields means error
2230 AP_DECLARE(void) ap_get_loadavg(ap_loadavg_t *ld);
2233 #define AP_NORESTART APR_OS_START_USEERR + 1
2239 #endif /* !APACHE_HTTPD_H */
2241 /** @} //APACHE Daemon */
2242 /** @} //APACHE Core */
2243 /** @} //APACHE super group */