1 /* Copyright 1999-2004 The Apache Software Foundation
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef APACHE_HTTPD_H
17 #define APACHE_HTTPD_H
21 * @brief HTTP Daemon routines
24 /* XXX - We need to push more stuff to other .h files, or even .c files, to
25 * make this file smaller
28 /* Headers in which EVERYONE has an interest... */
29 #include "ap_config.h"
32 #include "ap_release.h"
34 #include "apr_general.h"
35 #include "apr_tables.h"
36 #include "apr_pools.h"
38 #include "apr_network_io.h"
39 #include "apr_buckets.h"
43 #include "pcreposix.h"
45 /* Note: util_uri.h is also included, see below */
53 /* ----------------------------- config dir ------------------------------ */
55 /* Define this to be the default server home dir. Most things later in this
56 * file with a relative pathname will have this added.
60 /* Set default for OS/2 file system */
61 #define HTTPD_ROOT "/os2httpd"
63 /* Set default for Windows file system */
64 #define HTTPD_ROOT "/apache"
66 /* Set the default for BeOS */
67 #define HTTPD_ROOT "/boot/home/apache"
68 #elif defined (NETWARE)
69 /* Set the default for NetWare */
70 #define HTTPD_ROOT "/apache"
72 #define HTTPD_ROOT "/usr/local/apache"
74 #endif /* HTTPD_ROOT */
77 * --------- You shouldn't have to edit anything below this line ----------
79 * Any modifications to any defaults not defined above should be done in the
80 * respective configuration file.
84 /* Default location of documents. Can be overridden by the DocumentRoot
87 #ifndef DOCUMENT_LOCATION
89 /* Set default for OS/2 file system */
90 #define DOCUMENT_LOCATION HTTPD_ROOT "/docs"
92 #define DOCUMENT_LOCATION HTTPD_ROOT "/htdocs"
94 #endif /* DOCUMENT_LOCATION */
96 /* Maximum number of dynamically loaded modules */
97 #ifndef DYNAMIC_MODULE_LIMIT
98 #define DYNAMIC_MODULE_LIMIT 128
101 /* Default administrator's address */
102 #define DEFAULT_ADMIN "[no address given]"
104 /* The name of the log files */
105 #ifndef DEFAULT_ERRORLOG
106 #if defined(OS2) || defined(WIN32)
107 #define DEFAULT_ERRORLOG "logs/error.log"
109 #define DEFAULT_ERRORLOG "logs/error_log"
111 #endif /* DEFAULT_ERRORLOG */
113 /* Define this to be what your per-directory security files are called */
114 #ifndef DEFAULT_ACCESS_FNAME
116 /* Set default for OS/2 file system */
117 #define DEFAULT_ACCESS_FNAME "htaccess"
119 #define DEFAULT_ACCESS_FNAME ".htaccess"
121 #endif /* DEFAULT_ACCESS_FNAME */
123 /* The name of the server config file */
124 #ifndef SERVER_CONFIG_FILE
125 #define SERVER_CONFIG_FILE "conf/httpd.conf"
128 /* The default path for CGI scripts if none is currently set */
130 #define DEFAULT_PATH "/bin:/usr/bin:/usr/ucb:/usr/bsd:/usr/local/bin"
133 /* The path to the suExec wrapper, can be overridden in Configuration */
135 #define SUEXEC_BIN HTTPD_ROOT "/bin/suexec"
138 /* The timeout for waiting for messages */
139 #ifndef DEFAULT_TIMEOUT
140 #define DEFAULT_TIMEOUT 300
143 /* The timeout for waiting for keepalive timeout until next request */
144 #ifndef DEFAULT_KEEPALIVE_TIMEOUT
145 #define DEFAULT_KEEPALIVE_TIMEOUT 15
148 /* The number of requests to entertain per connection */
149 #ifndef DEFAULT_KEEPALIVE
150 #define DEFAULT_KEEPALIVE 100
153 /* Limits on the size of various request items. These limits primarily
154 * exist to prevent simple denial-of-service attacks on a server based
155 * on misuse of the protocol. The recommended values will depend on the
156 * nature of the server resources -- CGI scripts and database backends
157 * might require large values, but most servers could get by with much
158 * smaller limits than we use below. The request message body size can
159 * be limited by the per-dir config directive LimitRequestBody.
161 * Internal buffer sizes are two bytes more than the DEFAULT_LIMIT_REQUEST_LINE
162 * and DEFAULT_LIMIT_REQUEST_FIELDSIZE below, which explains the 8190.
163 * These two limits can be lowered (but not raised) by the server config
164 * directives LimitRequestLine and LimitRequestFieldsize, respectively.
166 * DEFAULT_LIMIT_REQUEST_FIELDS can be modified or disabled (set = 0) by
167 * the server config directive LimitRequestFields.
169 #ifndef DEFAULT_LIMIT_REQUEST_LINE
170 #define DEFAULT_LIMIT_REQUEST_LINE 8190
171 #endif /* default limit on bytes in Request-Line (Method+URI+HTTP-version) */
172 #ifndef DEFAULT_LIMIT_REQUEST_FIELDSIZE
173 #define DEFAULT_LIMIT_REQUEST_FIELDSIZE 8190
174 #endif /* default limit on bytes in any one header field */
175 #ifndef DEFAULT_LIMIT_REQUEST_FIELDS
176 #define DEFAULT_LIMIT_REQUEST_FIELDS 100
177 #endif /* default limit on number of request header fields */
181 * The default default character set name to add if AddDefaultCharset is
182 * enabled. Overridden with AddDefaultCharsetName.
184 #define DEFAULT_ADD_DEFAULT_CHARSET_NAME "iso-8859-1"
186 #endif /* CORE_PRIVATE */
188 /** default HTTP Server protocol */
189 #define AP_SERVER_PROTOCOL "HTTP/1.1"
192 /* ------------------ stuff that modules are allowed to look at ----------- */
194 /** Define this to be what your HTML directory content files are called */
195 #ifndef AP_DEFAULT_INDEX
196 #define AP_DEFAULT_INDEX "index.html"
201 * Define this to be what type you'd like returned for files with unknown
203 * @warning MUST be all lower case.
205 #ifndef DEFAULT_CONTENT_TYPE
206 #define DEFAULT_CONTENT_TYPE "text/plain"
209 /** The name of the MIME types file */
210 #ifndef AP_TYPES_CONFIG_FILE
211 #define AP_TYPES_CONFIG_FILE "conf/mime.types"
215 * Define the HTML doctype strings centrally.
217 /** HTML 2.0 Doctype */
218 #define DOCTYPE_HTML_2_0 "<!DOCTYPE HTML PUBLIC \"-//IETF//" \
219 "DTD HTML 2.0//EN\">\n"
220 /** HTML 3.2 Doctype */
221 #define DOCTYPE_HTML_3_2 "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
222 "DTD HTML 3.2 Final//EN\">\n"
223 /** HTML 4.0 Strict Doctype */
224 #define DOCTYPE_HTML_4_0S "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
225 "DTD HTML 4.0//EN\"\n" \
226 "\"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
227 /** HTML 4.0 Transitional Doctype */
228 #define DOCTYPE_HTML_4_0T "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
229 "DTD HTML 4.0 Transitional//EN\"\n" \
230 "\"http://www.w3.org/TR/REC-html40/loose.dtd\">\n"
231 /** HTML 4.0 Frameset Doctype */
232 #define DOCTYPE_HTML_4_0F "<!DOCTYPE HTML PUBLIC \"-//W3C//" \
233 "DTD HTML 4.0 Frameset//EN\"\n" \
234 "\"http://www.w3.org/TR/REC-html40/frameset.dtd\">\n"
235 /** XHTML 1.0 Strict Doctype */
236 #define DOCTYPE_XHTML_1_0S "<!DOCTYPE html PUBLIC \"-//W3C//" \
237 "DTD XHTML 1.0 Strict//EN\"\n" \
238 "\"http://www.w3.org/TR/xhtml1/DTD/" \
239 "xhtml1-strict.dtd\">\n"
240 /** XHTML 1.0 Transitional Doctype */
241 #define DOCTYPE_XHTML_1_0T "<!DOCTYPE html PUBLIC \"-//W3C//" \
242 "DTD XHTML 1.0 Transitional//EN\"\n" \
243 "\"http://www.w3.org/TR/xhtml1/DTD/" \
244 "xhtml1-transitional.dtd\">\n"
245 /** XHTML 1.0 Frameset Doctype */
246 #define DOCTYPE_XHTML_1_0F "<!DOCTYPE html PUBLIC \"-//W3C//" \
247 "DTD XHTML 1.0 Frameset//EN\"\n" \
248 "\"http://www.w3.org/TR/xhtml1/DTD/" \
249 "xhtml1-frameset.dtd\">"
251 /** Internal representation for a HTTP protocol number, e.g., HTTP/1.1 */
253 #define HTTP_VERSION(major,minor) (1000*(major)+(minor))
254 /** Major part of HTTP protocol */
255 #define HTTP_VERSION_MAJOR(number) ((number)/1000)
256 /** Minor part of HTTP protocol */
257 #define HTTP_VERSION_MINOR(number) ((number)%1000)
259 /* -------------- Port number for server running standalone --------------- */
261 /** default HTTP Port */
262 #define DEFAULT_HTTP_PORT 80
263 /** default HTTPS Port */
264 #define DEFAULT_HTTPS_PORT 443
266 * Check whether @a port is the default port for the request @a r.
267 * @param port The port number
268 * @param r The request
269 * @see #ap_default_port
271 #define ap_is_default_port(port,r) ((port) == ap_default_port(r))
273 * Get the default port for a request (which depends on the scheme).
274 * @param r The request
276 #define ap_default_port(r) ap_run_default_port(r)
278 * Get the scheme for a request.
279 * @param r The request
280 * @bug This should be called ap_http_scheme!
282 #define ap_http_method(r) ap_run_http_method(r)
284 /** The default string lengths */
285 #define MAX_STRING_LEN HUGE_STRING_LEN
286 #define HUGE_STRING_LEN 8192
288 /** The size of the server's internal read-write buffers */
289 #define AP_IOBUFSIZE 8192
291 /** The max number of regex captures that can be expanded by ap_pregsub */
292 #define AP_MAX_REG_MATCH 10
295 * APR_HAS_LARGE_FILES introduces the problem of spliting sendfile into
296 * mutiple buckets, no greater than MAX(apr_size_t), and more granular
297 * than that in case the brigade code/filters attempt to read it directly.
298 * ### 16mb is an invention, no idea if it is reasonable.
300 #define AP_MAX_SENDFILE 16777216 /* 2^24 */
303 * Special Apache error codes. These are basically used
304 * in http_main.c so we can keep track of various errors.
308 #define APEXIT_OK 0x0
309 /** A fatal error arising during the server's init sequence */
310 #define APEXIT_INIT 0x2
311 /** The child died during its init sequence */
312 #define APEXIT_CHILDINIT 0x3
314 * The child exited due to a resource shortage.
315 * The parent should limit the rate of forking until
316 * the situation is resolved.
318 #define APEXIT_CHILDSICK 0x7
320 * A fatal error, resulting in the whole server aborting.
321 * If a child exits with this error, the parent process
322 * considers this a server-wide fatal error and aborts.
324 #define APEXIT_CHILDFATAL 0xf
328 * Stuff marked #AP_DECLARE is part of the API, and intended for use
329 * by modules. Its purpose is to allow us to add attributes that
330 * particular platforms or compilers require to every exported function.
332 # define AP_DECLARE(type) type
335 #ifndef AP_DECLARE_NONSTD
337 * Stuff marked #AP_DECLARE_NONSTD is part of the API, and intended for
338 * use by modules. The difference between #AP_DECLARE and
339 * #AP_DECLARE_NONSTD is that the latter is required for any functions
340 * which use varargs or are used via indirect function call. This
341 * is to accomodate the two calling conventions in windows dlls.
343 # define AP_DECLARE_NONSTD(type) type
345 #ifndef AP_DECLARE_DATA
346 # define AP_DECLARE_DATA
349 #ifndef AP_MODULE_DECLARE
350 # define AP_MODULE_DECLARE(type) type
352 #ifndef AP_MODULE_DECLARE_NONSTD
353 # define AP_MODULE_DECLARE_NONSTD(type) type
355 #ifndef AP_MODULE_DECLARE_DATA
356 # define AP_MODULE_DECLARE_DATA
361 * modules should not used functions marked AP_CORE_DECLARE
363 #ifndef AP_CORE_DECLARE
364 # define AP_CORE_DECLARE AP_DECLARE
368 * modules should not used functions marked AP_CORE_DECLARE_NONSTD
371 #ifndef AP_CORE_DECLARE_NONSTD
372 # define AP_CORE_DECLARE_NONSTD AP_DECLARE_NONSTD
376 * The numeric version information is broken out into fields within this
380 int major; /**< major number */
381 int minor; /**< minor number */
382 int patch; /**< patch number */
383 const char *add_string; /**< additional string like "-dev" */
387 * Return httpd's version information in a numeric form.
389 * @param version Pointer to a version structure for returning the version
392 AP_DECLARE(void) ap_get_server_revision(ap_version_t *version);
395 * Get the server version string
396 * @return The server version string
398 AP_DECLARE(const char *) ap_get_server_version(void);
401 * Add a component to the version string
402 * @param pconf The pool to allocate the component from
403 * @param component The string to add
405 AP_DECLARE(void) ap_add_version_component(apr_pool_t *pconf, const char *component);
408 * Get the date a time that the server was built
409 * @return The server build time string
411 AP_DECLARE(const char *) ap_get_server_built(void);
413 #define DECLINED -1 /**< Module declines to handle */
414 #define DONE -2 /**< Module has served the response completely
415 * - it's safe to die() with no more output
417 #define OK 0 /**< Module has handled this stage. */
421 * @defgroup HTTP_Status HTTP Status Codes
425 * The size of the static array in http_protocol.c for storing
426 * all of the potential response status-lines (a sparse table).
427 * A future version should dynamically generate the apr_table_t at startup.
429 #define RESPONSE_CODES 57
431 #define HTTP_CONTINUE 100
432 #define HTTP_SWITCHING_PROTOCOLS 101
433 #define HTTP_PROCESSING 102
435 #define HTTP_CREATED 201
436 #define HTTP_ACCEPTED 202
437 #define HTTP_NON_AUTHORITATIVE 203
438 #define HTTP_NO_CONTENT 204
439 #define HTTP_RESET_CONTENT 205
440 #define HTTP_PARTIAL_CONTENT 206
441 #define HTTP_MULTI_STATUS 207
442 #define HTTP_MULTIPLE_CHOICES 300
443 #define HTTP_MOVED_PERMANENTLY 301
444 #define HTTP_MOVED_TEMPORARILY 302
445 #define HTTP_SEE_OTHER 303
446 #define HTTP_NOT_MODIFIED 304
447 #define HTTP_USE_PROXY 305
448 #define HTTP_TEMPORARY_REDIRECT 307
449 #define HTTP_BAD_REQUEST 400
450 #define HTTP_UNAUTHORIZED 401
451 #define HTTP_PAYMENT_REQUIRED 402
452 #define HTTP_FORBIDDEN 403
453 #define HTTP_NOT_FOUND 404
454 #define HTTP_METHOD_NOT_ALLOWED 405
455 #define HTTP_NOT_ACCEPTABLE 406
456 #define HTTP_PROXY_AUTHENTICATION_REQUIRED 407
457 #define HTTP_REQUEST_TIME_OUT 408
458 #define HTTP_CONFLICT 409
459 #define HTTP_GONE 410
460 #define HTTP_LENGTH_REQUIRED 411
461 #define HTTP_PRECONDITION_FAILED 412
462 #define HTTP_REQUEST_ENTITY_TOO_LARGE 413
463 #define HTTP_REQUEST_URI_TOO_LARGE 414
464 #define HTTP_UNSUPPORTED_MEDIA_TYPE 415
465 #define HTTP_RANGE_NOT_SATISFIABLE 416
466 #define HTTP_EXPECTATION_FAILED 417
467 #define HTTP_UNPROCESSABLE_ENTITY 422
468 #define HTTP_LOCKED 423
469 #define HTTP_FAILED_DEPENDENCY 424
470 #define HTTP_UPGRADE_REQUIRED 426
471 #define HTTP_INTERNAL_SERVER_ERROR 500
472 #define HTTP_NOT_IMPLEMENTED 501
473 #define HTTP_BAD_GATEWAY 502
474 #define HTTP_SERVICE_UNAVAILABLE 503
475 #define HTTP_GATEWAY_TIME_OUT 504
476 #define HTTP_VERSION_NOT_SUPPORTED 505
477 #define HTTP_VARIANT_ALSO_VARIES 506
478 #define HTTP_INSUFFICIENT_STORAGE 507
479 #define HTTP_NOT_EXTENDED 510
481 /** is the status code informational */
482 #define ap_is_HTTP_INFO(x) (((x) >= 100)&&((x) < 200))
483 /** is the status code OK ?*/
484 #define ap_is_HTTP_SUCCESS(x) (((x) >= 200)&&((x) < 300))
485 /** is the status code a redirect */
486 #define ap_is_HTTP_REDIRECT(x) (((x) >= 300)&&((x) < 400))
487 /** is the status code a error (client or server) */
488 #define ap_is_HTTP_ERROR(x) (((x) >= 400)&&((x) < 600))
489 /** is the status code a client error */
490 #define ap_is_HTTP_CLIENT_ERROR(x) (((x) >= 400)&&((x) < 500))
491 /** is the status code a server error */
492 #define ap_is_HTTP_SERVER_ERROR(x) (((x) >= 500)&&((x) < 600))
494 /** should the status code drop the connection */
495 #define ap_status_drops_connection(x) \
496 (((x) == HTTP_BAD_REQUEST) || \
497 ((x) == HTTP_REQUEST_TIME_OUT) || \
498 ((x) == HTTP_LENGTH_REQUIRED) || \
499 ((x) == HTTP_REQUEST_ENTITY_TOO_LARGE) || \
500 ((x) == HTTP_REQUEST_URI_TOO_LARGE) || \
501 ((x) == HTTP_INTERNAL_SERVER_ERROR) || \
502 ((x) == HTTP_SERVICE_UNAVAILABLE) || \
503 ((x) == HTTP_NOT_IMPLEMENTED))
506 * @defgroup Methods List of Methods recognized by the server
510 * Methods recognized (but not necessarily handled) by the server.
511 * These constants are used in bit shifting masks of size int, so it is
512 * unsafe to have more methods than bits in an int. HEAD == M_GET.
513 * This list must be tracked by the list in http_protocol.c in routine
514 * ap_method_name_of().
516 #define M_GET 0 /* RFC 2616: HTTP */
517 #define M_PUT 1 /* : */
522 #define M_TRACE 6 /* RFC 2616: HTTP */
523 #define M_PATCH 7 /* no rfc(!) ### remove this one? */
524 #define M_PROPFIND 8 /* RFC 2518: WebDAV */
525 #define M_PROPPATCH 9 /* : */
530 #define M_UNLOCK 14 /* RFC 2518: WebDAV */
531 #define M_VERSION_CONTROL 15 /* RFC 3253: WebDAV Versioning */
532 #define M_CHECKOUT 16 /* : */
533 #define M_UNCHECKOUT 17
538 #define M_MKWORKSPACE 22
539 #define M_MKACTIVITY 23
540 #define M_BASELINE_CONTROL 24
542 #define M_INVALID 26 /* RFC 3253: WebDAV Versioning */
545 * METHODS needs to be equal to the number of bits
546 * we are using for limit masks.
551 * The method mask bit to shift for anding with a bitmask.
553 #define AP_METHOD_BIT ((apr_int64_t)1)
558 * Structure for handling HTTP methods. Methods known to the server are
559 * accessed via a bitmask shortcut; extension methods are handled by
562 typedef struct ap_method_list_t ap_method_list_t;
563 struct ap_method_list_t {
564 /* The bitmask used for known methods */
565 apr_int64_t method_mask;
566 /* the array used for extension methods */
567 apr_array_header_t *method_list;
570 * @defgroup module_magic Module Magic mime types
573 /** Magic for mod_cgi[d] */
574 #define CGI_MAGIC_TYPE "application/x-httpd-cgi"
575 /** Magic for mod_include */
576 #define INCLUDES_MAGIC_TYPE "text/x-server-parsed-html"
577 /** Magic for mod_include */
578 #define INCLUDES_MAGIC_TYPE3 "text/x-server-parsed-html3"
579 /** Magic for mod_dir */
580 #define DIR_MAGIC_TYPE "httpd/unix-directory"
583 /* Just in case your linefeed isn't the one the other end is expecting. */
584 #if !APR_CHARSET_EBCDIC
587 /** carrige return */
589 /** carrige return /Line Feed Combo */
590 #define CRLF "\015\012"
591 #else /* APR_CHARSET_EBCDIC */
592 /* For platforms using the EBCDIC charset, the transition ASCII->EBCDIC is done
593 * in the buff package (bread/bputs/bwrite). Everywhere else, we use
594 * "native EBCDIC" CR and NL characters. These are therefore
601 #endif /* APR_CHARSET_EBCDIC */
604 * @defgroup values_request_rec_body Possible values for request_rec.read_body
606 * Possible values for request_rec.read_body (set by handling module):
609 /** Send 413 error if message has any body */
610 #define REQUEST_NO_BODY 0
611 /** Send 411 error if body without Content-Length */
612 #define REQUEST_CHUNKED_ERROR 1
613 /** If chunked, remove the chunks for me. */
614 #define REQUEST_CHUNKED_DECHUNK 2
618 * @defgroup values_request_rec_used_path_info Possible values for request_rec.used_path_info
620 * Possible values for request_rec.used_path_info:
623 /** Accept the path_info from the request */
624 #define AP_REQ_ACCEPT_PATH_INFO 0
625 /** Return a 404 error if path_info was given */
626 #define AP_REQ_REJECT_PATH_INFO 1
627 /** Module may chose to use the given path_info */
628 #define AP_REQ_DEFAULT_PATH_INFO 2
632 * Things which may vary per file-lookup WITHIN a request ---
633 * e.g., state of MIME config. Basically, the name of an object, info
634 * about the object, and any other info we may ahve which may need to
635 * change as we go poking around looking for it (e.g., overridden by
638 * Note how the default state of almost all these things is properly
639 * zero, so that allocating it with pcalloc does the right thing without
640 * a whole lot of hairy initialization... so long as we are willing to
641 * make the (fairly) portable assumption that the bit pattern of a NULL
642 * pointer is, in fact, zero.
646 * This represents the result of calling htaccess; these are cached for
649 struct htaccess_result {
650 /** the directory to which this applies */
652 /** the overrides allowed for the .htaccess file */
654 /** the configuration directives */
655 struct ap_conf_vector_t *htaccess;
656 /** the next one, or NULL if no more; N.B. never change this */
657 const struct htaccess_result *next;
660 /* The following four types define a hierarchy of activities, so that
661 * given a request_rec r you can write r->connection->server->process
662 * to get to the process_rec. While this reduces substantially the
663 * number of arguments that various hooks require beware that in
664 * threaded versions of the server you must consider multiplexing
668 /** A structure that represents one process */
669 typedef struct process_rec process_rec;
670 /** A structure that represents a virtual server */
671 typedef struct server_rec server_rec;
672 /** A structure that represents one connection */
673 typedef struct conn_rec conn_rec;
674 /** A structure that represents the current request */
675 typedef struct request_rec request_rec;
677 /* ### would be nice to not include this from httpd.h ... */
678 /* This comes after we have defined the request_rec type */
681 /** A structure that represents one process */
683 /** Global pool. Cleared upon normal exit */
685 /** Configuration pool. Cleared upon restart */
687 /** Number of command line arguments passed to the program */
689 /** The command line arguments */
690 const char * const *argv;
691 /** The program name used to execute the program */
692 const char *short_name;
695 /** A structure that represents the current request */
697 /** The pool associated with the request */
699 /** The connection to the client */
700 conn_rec *connection;
701 /** The virtual host for this request */
704 /** Pointer to the redirected request if this is an external redirect */
706 /** Pointer to the previous request if this is an internal redirect */
709 /** Pointer to the main request if this is a sub-request
710 * (see http_request.h) */
713 /* Info about the request itself... we begin with stuff that only
714 * protocol.c should ever touch...
716 /** First line of request */
718 /** HTTP/0.9, "simple" request (e.g. GET /foo\n w/no headers) */
720 /** A proxy request (calculated during post_read_request/translate_name)
721 * possible values PROXYREQ_NONE, PROXYREQ_PROXY, PROXYREQ_REVERSE,
725 /** HEAD request, as opposed to GET */
727 /** Protocol string, as given to us, or HTTP/0.9 */
729 /** Protocol version number of protocol; 1.1 = 1001 */
731 /** Host, as set by full URI or Host: */
732 const char *hostname;
734 /** Time when the request started */
735 apr_time_t request_time;
737 /** Status line, if set by script */
738 const char *status_line;
742 /* Request method, two ways; also, protocol, etc.. Outside of protocol.c,
743 * look, but don't touch.
746 /** Request method (eg. GET, HEAD, POST, etc.) */
748 /** M_GET, M_POST, etc. */
752 * 'allowed' is a bitvector of the allowed methods.
754 * A handler must ensure that the request method is one that
755 * it is capable of handling. Generally modules should DECLINE
756 * any request methods they do not handle. Prior to aborting the
757 * handler like this the handler should set r->allowed to the list
758 * of methods that it is willing to handle. This bitvector is used
759 * to construct the "Allow:" header required for OPTIONS requests,
760 * and HTTP_METHOD_NOT_ALLOWED and HTTP_NOT_IMPLEMENTED status codes.
762 * Since the default_handler deals with OPTIONS, all modules can
763 * usually decline to deal with OPTIONS. TRACE is always allowed,
764 * modules don't need to set it explicitly.
766 * Since the default_handler will always handle a GET, a
767 * module which does *not* implement GET should probably return
768 * HTTP_METHOD_NOT_ALLOWED. Unfortunately this means that a Script GET
769 * handler can't be installed by mod_actions.
772 /** Array of extension methods */
773 apr_array_header_t *allowed_xmethods;
774 /** List of allowed methods */
775 ap_method_list_t *allowed_methods;
777 /** byte count in stream is for body */
778 apr_off_t sent_bodyct;
779 /** body byte count, for easy access */
780 apr_off_t bytes_sent;
781 /** Last modified time of the requested resource */
784 /* HTTP/1.1 connection-level features */
786 /** sending chunked transfer-coding */
788 /** The Range: header */
790 /** The "real" content length */
793 /** Remaining bytes left to read from the request body */
795 /** Number of bytes that have been read from the request body */
796 apr_off_t read_length;
797 /** Method for reading the request body
798 * (eg. REQUEST_CHUNKED_ERROR, REQUEST_NO_BODY,
799 * REQUEST_CHUNKED_DECHUNK, etc...) */
801 /** reading chunked transfer-coding */
803 /** is client waiting for a 100 response? */
804 unsigned expecting_100;
806 /* MIME header environments, in and out. Also, an array containing
807 * environment variables to be passed to subprocesses, so people can
808 * write modules to add to that environment.
810 * The difference between headers_out and err_headers_out is that the
811 * latter are printed even on error, and persist across internal redirects
812 * (so the headers printed for ErrorDocument handlers will have them).
814 * The 'notes' apr_table_t is for notes from one module to another, with no
815 * other set purpose in mind...
818 /** MIME header environment from the request */
819 apr_table_t *headers_in;
820 /** MIME header environment for the response */
821 apr_table_t *headers_out;
822 /** MIME header environment for the response, printed even on errors and
823 * persist across internal redirects */
824 apr_table_t *err_headers_out;
825 /** Array of environment variables to be used for sub processes */
826 apr_table_t *subprocess_env;
827 /** Notes from one module to another */
830 /* content_type, handler, content_encoding, and all content_languages
831 * MUST be lowercased strings. They may be pointers to static strings;
832 * they should not be modified in place.
834 /** The content-type for the current request */
835 const char *content_type; /* Break these out --- we dispatch on 'em */
836 /** The handler string that we use to call a handler function */
837 const char *handler; /* What we *really* dispatch on */
839 /** How to encode the data */
840 const char *content_encoding;
841 /** Array of strings representing the content languages */
842 apr_array_header_t *content_languages;
844 /** variant list validator (if negotiated) */
845 char *vlist_validator;
847 /** If an authentication check was made, this gets set to the user name. */
849 /** If an authentication check was made, this gets set to the auth type. */
852 /** This response can not be cached */
854 /** There is no local copy of this response */
857 /* What object is being requested (either directly, or via include
858 * or content-negotiation mapping).
861 /** The URI without any parsing performed */
863 /** The path portion of the URI */
865 /** The filename on disk corresponding to this response */
867 /* XXX: What does this mean? Please define "canonicalize" -aaron */
868 /** The true filename, we canonicalize r->filename if these don't match */
869 char *canonical_filename;
870 /** The PATH_INFO extracted from this request */
872 /** The QUERY_ARGS extracted from this request */
874 /** ST_MODE set to zero if no such file */
876 /** A struct containing the components of URI */
877 apr_uri_t parsed_uri;
880 * Flag for the handler to accept or reject path_info on
881 * the current request. All modules should respect the
882 * AP_REQ_ACCEPT_PATH_INFO and AP_REQ_REJECT_PATH_INFO
883 * values, while AP_REQ_DEFAULT_PATH_INFO indicates they
884 * may follow existing conventions. This is set to the
885 * user's preference upon HOOK_VERY_FIRST of the fixups.
889 /* Various other config info which may change with .htaccess files
890 * These are config vectors, with one void* pointer for each module
891 * (the thing pointed to being the module's business).
894 /** Options set in config files, etc. */
895 struct ap_conf_vector_t *per_dir_config;
896 /** Notes on *this* request */
897 struct ap_conf_vector_t *request_config;
900 * A linked list of the .htaccess configuration directives
901 * accessed by this request.
902 * N.B. always add to the head of the list, _never_ to the end.
903 * that way, a sub request's list can (temporarily) point to a parent's list
905 const struct htaccess_result *htaccess;
907 /** A list of output filters to be used for this request */
908 struct ap_filter_t *output_filters;
909 /** A list of input filters to be used for this request */
910 struct ap_filter_t *input_filters;
912 /** A list of protocol level output filters to be used for this
914 struct ap_filter_t *proto_output_filters;
915 /** A list of protocol level input filters to be used for this
917 struct ap_filter_t *proto_input_filters;
919 /** A flag to determine if the eos bucket has been sent yet */
922 /* Things placed at the end of the record to avoid breaking binary
923 * compatibility. It would be nice to remember to reorder the entire
924 * record to improve 64bit alignment the next time we need to break
925 * binary compatibility for some other reason.
930 * @defgroup ProxyReq Proxy request types
932 * Possible values of request_rec->proxyreq. A request could be normal,
933 * proxied or reverse proxied. Normally proxied and reverse proxied are
934 * grouped together as just "proxied", but sometimes it's necessary to
935 * tell the difference between the two, such as for authentication.
939 #define PROXYREQ_NONE 0 /**< No proxy */
940 #define PROXYREQ_PROXY 1 /**< Standard proxy */
941 #define PROXYREQ_REVERSE 2 /**< Reverse proxy */
942 #define PROXYREQ_RESPONSE 3 /**< Origin response */
950 } ap_conn_keepalive_e;
952 /** Structure to store things which are per connection */
954 /** Pool associated with this connection */
956 /** Physical vhost this conn came in on */
957 server_rec *base_server;
958 /** used by http_vhost.c */
959 void *vhost_lookup_data;
961 /* Information about the connection itself */
963 apr_sockaddr_t *local_addr;
964 /** remote address */
965 apr_sockaddr_t *remote_addr;
967 /** Client's IP address */
969 /** Client's DNS name, if known. NULL if DNS hasn't been checked,
970 * "" if it has and no address was found. N.B. Only access this though
971 * get_remote_host() */
973 /** Only ever set if doing rfc1413 lookups. N.B. Only access this through
974 * get_remote_logname() */
975 char *remote_logname;
977 /** Are we still talking? */
980 /** Are we going to keep the connection alive for another request?
981 * @see ap_conn_keepalive_e */
982 ap_conn_keepalive_e keepalive;
984 /** have we done double-reverse DNS? -1 yes/failure, 0 not yet,
986 signed int double_reverse:2;
988 /** How many times have we used it? */
990 /** server IP address */
992 /** used for ap_get_server_name when UseCanonicalName is set to DNS
993 * (ignores setting of HostnameLookups) */
996 /** ID of this connection; unique at any point in time */
998 /** Notes on *this* connection */
999 struct ap_conf_vector_t *conn_config;
1000 /** send note from one module to another, must remain valid for all
1001 * requests on this conn */
1003 /** A list of input filters to be used for this connection */
1004 struct ap_filter_t *input_filters;
1005 /** A list of output filters to be used for this connection */
1006 struct ap_filter_t *output_filters;
1007 /** handle to scoreboard information for this connection */
1009 /** The bucket allocator to use for all bucket/brigade creations */
1010 struct apr_bucket_alloc_t *bucket_alloc;
1013 /* Per-vhost config... */
1016 * The address 255.255.255.255, when used as a virtualhost address,
1017 * will become the "default" server when the ip doesn't match other vhosts.
1019 #define DEFAULT_VHOST_ADDR 0xfffffffful
1022 /** A structure to be used for Per-vhost config */
1023 typedef struct server_addr_rec server_addr_rec;
1024 struct server_addr_rec {
1025 /** The next server in the list */
1026 server_addr_rec *next;
1027 /** The bound address, for this server */
1028 apr_sockaddr_t *host_addr;
1029 /** The bound port, for this server */
1030 apr_port_t host_port;
1031 /** The name given in <VirtualHost> */
1035 /** A structure to store information for each virtual server */
1037 /** The process this server is running in */
1038 process_rec *process;
1039 /** The next server in the list */
1042 /** The name of the server */
1043 const char *defn_name;
1044 /** The line of the config file that the server was defined on */
1045 unsigned defn_line_number;
1047 /* Contact information */
1049 /** The admin's contact information */
1051 /** The server hostname */
1052 char *server_hostname;
1053 /** for redirects, etc. */
1056 /* Log files --- note that transfer log is now in the modules... */
1058 /** The name of the error log */
1060 /** A file descriptor that references the error log */
1061 apr_file_t *error_log;
1062 /** The log level for this server */
1065 /* Module-specific configuration for server, and defaults... */
1067 /** true if this is the virtual server */
1069 /** Config vector containing pointers to modules' per-server config
1071 struct ap_conf_vector_t *module_config;
1072 /** MIME type info, etc., before we start checking per-directory info */
1073 struct ap_conf_vector_t *lookup_defaults;
1075 /* Transaction handling */
1077 /** I haven't got a clue */
1078 server_addr_rec *addrs;
1079 /** Timeout, as an apr interval, before we give up */
1080 apr_interval_time_t timeout;
1081 /** The apr interval we will wait for another request */
1082 apr_interval_time_t keep_alive_timeout;
1083 /** Maximum requests per connection */
1085 /** Use persistent connections? */
1088 /** Pathname for ServerPath */
1090 /** Length of path */
1093 /** Normal names for ServerAlias servers */
1094 apr_array_header_t *names;
1095 /** Wildcarded names for ServerAlias servers */
1096 apr_array_header_t *wild_names;
1098 /** limit on size of the HTTP request line */
1100 /** limit on size of any request header field */
1101 int limit_req_fieldsize;
1102 /** limit on number of request header fields */
1103 int limit_req_fields;
1106 typedef struct core_output_filter_ctx {
1107 apr_bucket_brigade *b;
1108 apr_pool_t *deferred_write_pool; /* subpool of c->pool used for resources
1109 * which may outlive the request
1111 } core_output_filter_ctx_t;
1113 typedef struct core_filter_ctx {
1114 apr_bucket_brigade *b;
1117 typedef struct core_net_rec {
1118 /** Connection to the client */
1119 apr_socket_t *client_socket;
1121 /** connection record */
1124 core_output_filter_ctx_t *out_ctx;
1129 * Examine a field value (such as a media-/content-type) string and return
1130 * it sans any parameters; e.g., strip off any ';charset=foo' and the like.
1131 * @param p Pool to allocate memory from
1132 * @param intype The field to examine
1133 * @return A copy of the field minus any parameters
1135 AP_DECLARE(char *) ap_field_noparam(apr_pool_t *p, const char *intype);
1138 * Convert a time from an integer into a string in a specified format
1139 * @param p The pool to allocate memory from
1140 * @param t The time to convert
1141 * @param fmt The format to use for the conversion
1142 * @param gmt Convert the time for GMT?
1143 * @return The string that represents the specified time
1145 AP_DECLARE(char *) ap_ht_time(apr_pool_t *p, apr_time_t t, const char *fmt, int gmt);
1147 /* String handling. The *_nc variants allow you to use non-const char **s as
1148 arguments (unfortunately C won't automatically convert a char ** to a const
1152 * Get the characters until the first occurance of a specified character
1153 * @param p The pool to allocate memory from
1154 * @param line The string to get the characters from
1155 * @param stop The character to stop at
1156 * @return A copy of the characters up to the first stop character
1158 AP_DECLARE(char *) ap_getword(apr_pool_t *p, const char **line, char stop);
1160 * Get the characters until the first occurance of a specified character
1161 * @param p The pool to allocate memory from
1162 * @param line The string to get the characters from
1163 * @param stop The character to stop at
1164 * @return A copy of the characters up to the first stop character
1165 * @note This is the same as ap_getword(), except it doesn't use const char **.
1167 AP_DECLARE(char *) ap_getword_nc(apr_pool_t *p, char **line, char stop);
1170 * Get the first word from a given string. A word is defined as all characters
1171 * up to the first whitespace.
1172 * @param p The pool to allocate memory from
1173 * @param line The string to traverse
1174 * @return The first word in the line
1176 AP_DECLARE(char *) ap_getword_white(apr_pool_t *p, const char **line);
1178 * Get the first word from a given string. A word is defined as all characters
1179 * up to the first whitespace.
1180 * @param p The pool to allocate memory from
1181 * @param line The string to traverse
1182 * @return The first word in the line
1183 * @note The same as ap_getword_white(), except it doesn't use const char **.
1185 AP_DECLARE(char *) ap_getword_white_nc(apr_pool_t *p, char **line);
1188 * Get all characters from the first occurance of @a stop to the first '\0'
1189 * @param p The pool to allocate memory from
1190 * @param line The line to traverse
1191 * @param stop The character to start at
1192 * @return A copy of all caracters after the first occurance of the specified
1195 AP_DECLARE(char *) ap_getword_nulls(apr_pool_t *p, const char **line,
1198 * Get all characters from the first occurance of @a stop to the first '\0'
1199 * @param p The pool to allocate memory from
1200 * @param line The line to traverse
1201 * @param stop The character to start at
1202 * @return A copy of all caracters after the first occurance of the specified
1204 * @note The same as ap_getword_nulls(), except it doesn't use const char **.
1206 AP_DECLARE(char *) ap_getword_nulls_nc(apr_pool_t *p, char **line, char stop);
1209 * Get the second word in the string paying attention to quoting
1210 * @param p The pool to allocate from
1211 * @param line The line to traverse
1212 * @return A copy of the string
1214 AP_DECLARE(char *) ap_getword_conf(apr_pool_t *p, const char **line);
1216 * Get the second word in the string paying attention to quoting
1217 * @param p The pool to allocate from
1218 * @param line The line to traverse
1219 * @return A copy of the string
1220 * @note The same as ap_getword_conf(), except it doesn't use const char **.
1222 AP_DECLARE(char *) ap_getword_conf_nc(apr_pool_t *p, char **line);
1225 * Check a string for any ${ENV} environment variable construct and replace
1226 * each them by the value of that environment variable, if it exists. If the
1227 * environment value does not exist, leave the ${ENV} construct alone; it
1228 * means something else.
1229 * @param p The pool to allocate from
1230 * @param word The string to check
1231 * @return The string with the replaced environment variables
1233 AP_DECLARE(const char *) ap_resolve_env(apr_pool_t *p, const char * word);
1236 * Size an HTTP header field list item, as separated by a comma.
1237 * @param field The field to size
1238 * @param len The length of the field
1239 * @return The return value is a pointer to the beginning of the non-empty
1240 * list item within the original string (or NULL if there is none) and the
1241 * address of field is shifted to the next non-comma, non-whitespace
1242 * character. len is the length of the item excluding any beginning whitespace.
1244 AP_DECLARE(const char *) ap_size_list_item(const char **field, int *len);
1247 * Retrieve an HTTP header field list item, as separated by a comma,
1248 * while stripping insignificant whitespace and lowercasing anything not in
1249 * a quoted string or comment.
1250 * @param p The pool to allocate from
1251 * @param field The field to retrieve
1252 * @return The return value is a new string containing the converted list
1253 * item (or NULL if none) and the address pointed to by field is
1254 * shifted to the next non-comma, non-whitespace.
1256 AP_DECLARE(char *) ap_get_list_item(apr_pool_t *p, const char **field);
1259 * Find an item in canonical form (lowercase, no extra spaces) within
1260 * an HTTP field value list.
1261 * @param p The pool to allocate from
1262 * @param line The field value list to search
1263 * @param tok The token to search for
1264 * @return 1 if found, 0 if not found.
1266 AP_DECLARE(int) ap_find_list_item(apr_pool_t *p, const char *line, const char *tok);
1269 * Retrieve a token, spacing over it and adjusting the pointer to
1270 * the first non-white byte afterwards. Note that these tokens
1271 * are delimited by semis and commas and can also be delimited
1272 * by whitespace at the caller's option.
1273 * @param p The pool to allocate from
1274 * @param accept_line The line to retrieve the token from (adjusted afterwards)
1275 * @param accept_white Is it delimited by whitespace
1278 AP_DECLARE(char *) ap_get_token(apr_pool_t *p, const char **accept_line, int accept_white);
1281 * Find http tokens, see the definition of token from RFC2068
1282 * @param p The pool to allocate from
1283 * @param line The line to find the token
1284 * @param tok The token to find
1285 * @return 1 if the token is found, 0 otherwise
1287 AP_DECLARE(int) ap_find_token(apr_pool_t *p, const char *line, const char *tok);
1290 * find http tokens from the end of the line
1291 * @param p The pool to allocate from
1292 * @param line The line to find the token
1293 * @param tok The token to find
1294 * @return 1 if the token is found, 0 otherwise
1296 AP_DECLARE(int) ap_find_last_token(apr_pool_t *p, const char *line, const char *tok);
1299 * Check for an Absolute URI syntax
1300 * @param u The string to check
1301 * @return 1 if URI, 0 otherwise
1303 AP_DECLARE(int) ap_is_url(const char *u);
1307 * @param url The url to unescape
1308 * @return 0 on success, non-zero otherwise
1310 AP_DECLARE(int) ap_unescape_url(char *url);
1312 * Unescape a URL, but leaving %2f (slashes) escaped
1313 * @param url The url to unescape
1314 * @return 0 on success, non-zero otherwise
1316 AP_DECLARE(int) ap_unescape_url_keep2f(char *url);
1318 * Convert all double slashes to single slashes
1319 * @param name The string to convert
1321 AP_DECLARE(void) ap_no2slash(char *name);
1324 * Remove all ./ and xx/../ substrings from a file name. Also remove
1325 * any leading ../ or /../ substrings.
1326 * @param name the file name to parse
1328 AP_DECLARE(void) ap_getparents(char *name);
1331 * Escape a path segment, as defined in RFC 1808
1332 * @param p The pool to allocate from
1333 * @param s The path to convert
1334 * @return The converted URL
1336 AP_DECLARE(char *) ap_escape_path_segment(apr_pool_t *p, const char *s);
1338 * convert an OS path to a URL in an OS dependant way.
1339 * @param p The pool to allocate from
1340 * @param path The path to convert
1341 * @param partial if set, assume that the path will be appended to something
1342 * with a '/' in it (and thus does not prefix "./")
1343 * @return The converted URL
1345 AP_DECLARE(char *) ap_os_escape_path(apr_pool_t *p, const char *path, int partial);
1346 /** @see ap_os_escape_path */
1347 #define ap_escape_uri(ppool,path) ap_os_escape_path(ppool,path,1)
1350 * Escape an html string
1351 * @param p The pool to allocate from
1352 * @param s The html to escape
1353 * @return The escaped string
1355 AP_DECLARE(char *) ap_escape_html(apr_pool_t *p, const char *s);
1358 * Escape a string for logging
1359 * @param p The pool to allocate from
1360 * @param str The string to escape
1361 * @return The escaped string
1363 AP_DECLARE(char *) ap_escape_logitem(apr_pool_t *p, const char *str);
1366 * Escape a string for logging into the error log (without a pool)
1367 * @param dest The buffer to write to
1368 * @param source The string to escape
1369 * @param buflen The buffer size for the escaped string (including \0)
1370 * @return The len of the escaped string (always < maxlen)
1372 AP_DECLARE(apr_size_t) ap_escape_errorlog_item(char *dest, const char *source,
1376 * Construct a full hostname
1377 * @param p The pool to allocate from
1378 * @param hostname The hostname of the server
1379 * @param port The port the server is running on
1380 * @param r The current request
1381 * @return The server's hostname
1383 AP_DECLARE(char *) ap_construct_server(apr_pool_t *p, const char *hostname,
1384 apr_port_t port, const request_rec *r);
1386 * Escape a shell command
1387 * @param p The pool to allocate from
1388 * @param s The command to escape
1389 * @return The escaped shell command
1391 AP_DECLARE(char *) ap_escape_shell_cmd(apr_pool_t *p, const char *s);
1394 * Count the number of directories in a path
1395 * @param path The path to count
1396 * @return The number of directories
1398 AP_DECLARE(int) ap_count_dirs(const char *path);
1401 * Copy at most @a n leading directories of @a s into @a d. @a d
1402 * should be at least as large as @a s plus 1 extra byte
1404 * @param d The location to copy to
1405 * @param s The location to copy from
1406 * @param n The number of directories to copy
1407 * @return value is the ever useful pointer to the trailing \0 of d
1408 * @note on platforms with drive letters, n = 0 returns the "/" root,
1409 * whereas n = 1 returns the "d:/" root. On all other platforms, n = 0
1410 * returns the empty string. */
1411 AP_DECLARE(char *) ap_make_dirstr_prefix(char *d, const char *s, int n);
1414 * Return the parent directory name (including trailing /) of the file
1416 * @param p The pool to allocate from
1417 * @param s The file to get the parent of
1418 * @return A copy of the file's parent directory
1420 AP_DECLARE(char *) ap_make_dirstr_parent(apr_pool_t *p, const char *s);
1423 * Given a directory and filename, create a single path from them. This
1424 * function is smart enough to ensure that there is a sinlge '/' between the
1425 * directory and file names
1426 * @param a The pool to allocate from
1427 * @param dir The directory name
1428 * @param f The filename
1429 * @return A copy of the full path
1430 * @tip Never consider using this function if you are dealing with filesystem
1431 * names that need to remain canonical, unless you are merging an apr_dir_read
1432 * path and returned filename. Otherwise, the result is not canonical.
1434 AP_DECLARE(char *) ap_make_full_path(apr_pool_t *a, const char *dir, const char *f);
1437 * Test if the given path has an an absolute path.
1438 * @param p The pool to allocate from
1439 * @param dir The directory name
1440 * @tip The converse is not necessarily true, some OS's (Win32/OS2/Netware) have
1441 * multiple forms of absolute paths. This only reports if the path is absolute
1442 * in a canonical sense.
1444 AP_DECLARE(int) ap_os_is_path_absolute(apr_pool_t *p, const char *dir);
1447 * Does the provided string contain wildcard characters? This is useful
1448 * for determining if the string should be passed to strcmp_match or to strcmp.
1449 * The only wildcard characters recognized are '?' and '*'
1450 * @param str The string to check
1451 * @return 1 if the string has wildcards, 0 otherwise
1453 AP_DECLARE(int) ap_is_matchexp(const char *str);
1456 * Determine if a string matches a patterm containing the wildcards '?' or '*'
1457 * @param str The string to check
1458 * @param expected The pattern to match against
1459 * @return 1 if the two strings match, 0 otherwise
1461 AP_DECLARE(int) ap_strcmp_match(const char *str, const char *expected);
1463 * Determine if a string matches a patterm containing the wildcards '?' or '*',
1465 * @param str The string to check
1466 * @param expected The pattern to match against
1467 * @return 1 if the two strings match, 0 otherwise
1469 AP_DECLARE(int) ap_strcasecmp_match(const char *str, const char *expected);
1472 * Find the first occurrence of the substring s2 in s1, regardless of case
1473 * @param s1 The string to search
1474 * @param s2 The substring to search for
1475 * @return A pointer to the beginning of the substring
1476 * @remark See apr_strmatch() for a faster alternative
1478 AP_DECLARE(char *) ap_strcasestr(const char *s1, const char *s2);
1481 * Return a pointer to the location inside of bigstring immediately after prefix
1482 * @param bigstring The input string
1483 * @param prefix The prefix to strip away
1484 * @return A pointer relative to bigstring after prefix
1486 AP_DECLARE(const char *) ap_stripprefix(const char *bigstring,
1487 const char *prefix);
1490 * Decode a base64 encoded string into memory allocated from a pool
1491 * @param p The pool to allocate from
1492 * @param bufcoded The encoded string
1493 * @return The decoded string
1495 AP_DECLARE(char *) ap_pbase64decode(apr_pool_t *p, const char *bufcoded);
1498 * Encode a string into memory allocated from a pool in base 64 format
1499 * @param p The pool to allocate from
1500 * @param strin The plaintext string
1501 * @return The encoded string
1503 AP_DECLARE(char *) ap_pbase64encode(apr_pool_t *p, char *string);
1507 * Compile a regular expression to be used later
1508 * @param p The pool to allocate from
1509 * @param pattern the regular expression to compile
1510 * @param cflags The bitwise or of one or more of the following:
1511 * @li #REG_EXTENDED - Use POSIX extended Regular Expressions
1512 * @li #REG_ICASE - Ignore case
1513 * @li #REG_NOSUB - Support for substring addressing of matches
1515 * @li #REG_NEWLINE - Match-any-character operators don't match new-line
1516 * @return The compiled regular expression
1518 AP_DECLARE(regex_t *) ap_pregcomp(apr_pool_t *p, const char *pattern,
1522 * Free the memory associated with a compiled regular expression
1523 * @param p The pool the regex was allocated from
1524 * @param reg The regular expression to free
1526 AP_DECLARE(void) ap_pregfree(apr_pool_t *p, regex_t *reg);
1529 * Match a null-terminated string against a pre-compiled regex.
1530 * @param preg The pre-compiled regex
1531 * @param string The string to match
1532 * @param nmatch Provide information regarding the location of any matches
1533 * @param pmatch Provide information regarding the location of any matches
1534 * @param eflags Bitwise or of any of:
1535 * @li #REG_NOTBOL - match-beginning-of-line operator always
1537 * @li #REG_NOTEOL - match-end-of-line operator always fails to match
1538 * @return 0 for successful match, #REG_NOMATCH otherwise
1540 AP_DECLARE(int) ap_regexec(regex_t *preg, const char *string,
1541 size_t nmatch, regmatch_t pmatch[], int eflags);
1544 * Return the error code returned by regcomp or regexec into error messages
1545 * @param errcode the error code returned by regexec or regcomp
1546 * @param preg The precompiled regex
1547 * @param errbuf A buffer to store the error in
1548 * @param errbuf_size The size of the buffer
1550 AP_DECLARE(size_t) ap_regerror(int errcode, const regex_t *preg,
1551 char *errbuf, size_t errbuf_size);
1554 * After performing a successful regex match, you may use this function to
1555 * perform a series of string substitutions based on subexpressions that were
1556 * matched during the call to ap_regexec
1557 * @param p The pool to allocate from
1558 * @param input An arbitrary string containing $1 through $9. These are
1559 * replaced with the corresponding matched sub-expressions
1560 * @param source The string that was originally matched to the regex
1561 * @param nmatch the nmatch returned from ap_pregex
1562 * @param pmatch the pmatch array returned from ap_pregex
1564 AP_DECLARE(char *) ap_pregsub(apr_pool_t *p, const char *input, const char *source,
1565 size_t nmatch, regmatch_t pmatch[]);
1568 * We want to downcase the type/subtype for comparison purposes
1569 * but nothing else because ;parameter=foo values are case sensitive.
1570 * @param s The content-type to convert to lowercase
1572 AP_DECLARE(void) ap_content_type_tolower(char *s);
1575 * convert a string to all lowercase
1576 * @param s The string to convert to lowercase
1578 AP_DECLARE(void) ap_str_tolower(char *s);
1581 * Search a string from left to right for the first occurrence of a
1582 * specific character
1583 * @param str The string to search
1584 * @param c The character to search for
1585 * @return The index of the first occurrence of c in str
1587 AP_DECLARE(int) ap_ind(const char *str, char c); /* Sigh... */
1590 * Search a string from right to left for the first occurrence of a
1591 * specific character
1592 * @param str The string to search
1593 * @param c The character to search for
1594 * @return The index of the first occurrence of c in str
1596 AP_DECLARE(int) ap_rind(const char *str, char c);
1599 * Given a string, replace any bare " with \" .
1600 * @param p The pool to allocate memory from
1601 * @param instring The string to search for "
1602 * @return A copy of the string with escaped quotes
1604 AP_DECLARE(char *) ap_escape_quotes(apr_pool_t *p, const char *instring);
1606 /* Misc system hackery */
1608 * Given the name of an object in the file system determine if it is a directory
1609 * @param p The pool to allocate from
1610 * @param name The name of the object to check
1611 * @return 1 if it is a directory, 0 otherwise
1613 AP_DECLARE(int) ap_is_rdirectory(apr_pool_t *p, const char *name);
1616 * Given the name of an object in the file system determine if it is a directory - this version is symlink aware
1617 * @param p The pool to allocate from
1618 * @param name The name of the object to check
1619 * @return 1 if it is a directory, 0 otherwise
1621 AP_DECLARE(int) ap_is_directory(apr_pool_t *p, const char *name);
1624 extern int os_init_job_environment(server_rec *s, const char *user_name, int one_process);
1625 #endif /* _OSD_POSIX */
1628 * Determine the local host name for the current machine
1629 * @param p The pool to allocate from
1630 * @return A copy of the local host name
1632 char *ap_get_local_host(apr_pool_t *p);
1635 * Log an assertion to the error log
1636 * @param szExp The assertion that failed
1637 * @param szFile The file the assertion is in
1638 * @param nLine The line the assertion is defined on
1640 AP_DECLARE(void) ap_log_assert(const char *szExp, const char *szFile, int nLine)
1641 __attribute__((noreturn));
1644 #define ap_assert(exp) ((exp) ? (void)0 : ap_log_assert(#exp,__FILE__,__LINE__))
1647 * Redefine assert() to something more useful for an Apache...
1649 * Use ap_assert() if the condition should always be checked.
1650 * Use AP_DEBUG_ASSERT() if the condition should only be checked when AP_DEBUG
1655 #define AP_DEBUG_ASSERT(exp) ap_assert(exp)
1657 #define AP_DEBUG_ASSERT(exp) ((void)0)
1661 * @defgroup stopsignal flags which indicate places where the sever should stop for debugging.
1663 * A set of flags which indicate places where the server should raise(SIGSTOP).
1664 * This is useful for debugging, because you can then attach to that process
1665 * with gdb and continue. This is important in cases where one_process
1666 * debugging isn't possible.
1668 /** stop on a Detach */
1669 #define SIGSTOP_DETACH 1
1670 /** stop making a child process */
1671 #define SIGSTOP_MAKE_CHILD 2
1672 /** stop spawning a child process */
1673 #define SIGSTOP_SPAWN_CHILD 4
1674 /** stop spawning a child process with a piped log */
1675 #define SIGSTOP_PIPED_LOG_SPAWN 8
1676 /** stop spawning a CGI child process */
1677 #define SIGSTOP_CGI_CHILD 16
1679 /** Macro to get GDB started */
1680 #ifdef DEBUG_SIGSTOP
1681 extern int raise_sigstop_flags;
1682 #define RAISE_SIGSTOP(x) do { \
1683 if (raise_sigstop_flags & SIGSTOP_##x) raise(SIGSTOP);\
1686 #define RAISE_SIGSTOP(x)
1690 * Get HTML describing the address and (optionally) admin of the server.
1691 * @param prefix Text which is prepended to the return value
1692 * @param r The request_rec
1693 * @return HTML describing the server, allocated in @a r's pool.
1695 AP_DECLARE(const char *) ap_psignature(const char *prefix, request_rec *r);
1697 /** strtoul does not exist on sunos4. */
1701 #define strtoul strtoul_is_not_a_portable_function_use_strtol_instead
1703 /* The C library has functions that allow const to be silently dropped ...
1704 these macros detect the drop in maintainer mode, but use the native
1705 methods for normal builds
1707 Note that on some platforms (e.g., AIX with gcc, Solaris with gcc), string.h needs
1708 to be included before the macros are defined or compilation will fail.
1712 AP_DECLARE(char *) ap_strchr(char *s, int c);
1713 AP_DECLARE(const char *) ap_strchr_c(const char *s, int c);
1714 AP_DECLARE(char *) ap_strrchr(char *s, int c);
1715 AP_DECLARE(const char *) ap_strrchr_c(const char *s, int c);
1716 AP_DECLARE(char *) ap_strstr(char *s, const char *c);
1717 AP_DECLARE(const char *) ap_strstr_c(const char *s, const char *c);
1722 # define strchr(s, c) ap_strchr(s,c)
1724 # define strrchr(s, c) ap_strrchr(s,c)
1726 # define strstr(s, c) ap_strstr(s,c)
1730 /** use this instead of strchr */
1731 # define ap_strchr(s, c) strchr(s, c)
1732 /** use this instead of strchr */
1733 # define ap_strchr_c(s, c) strchr(s, c)
1734 /** use this instead of strrchr */
1735 # define ap_strrchr(s, c) strrchr(s, c)
1736 /** use this instead of strrchr */
1737 # define ap_strrchr_c(s, c) strrchr(s, c)
1738 /** use this instead of strrstr*/
1739 # define ap_strstr(s, c) strstr(s, c)
1740 /** use this instead of strrstr*/
1741 # define ap_strstr_c(s, c) strstr(s, c)
1745 #define AP_NORESTART APR_OS_START_USEERR + 1
1751 #endif /* !APACHE_HTTPD_H */