-/* ====================================================================
- * The Apache Software License, Version 1.1
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
*
- * Copyright (c) 2000 The Apache Software Foundation. All rights
- * reserved.
+ * http://www.apache.org/licenses/LICENSE-2.0
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file http_protocol.h
+ * @brief HTTP protocol handling
*
- * Portions of this software are based upon public domain software
- * originally written at the National Center for Supercomputing Applications,
- * University of Illinois, Urbana-Champaign.
+ * @defgroup APACHE_CORE_PROTO HTTP Protocol Handling
+ * @ingroup APACHE_CORE
+ * @{
*/
#ifndef APACHE_HTTP_PROTOCOL_H
#define APACHE_HTTP_PROTOCOL_H
-#include "ap_hooks.h"
+#include "httpd.h"
+#include "apr_hooks.h"
#include "apr_portable.h"
#include "apr_mmap.h"
+#include "apr_buckets.h"
+#include "util_filter.h"
#ifdef __cplusplus
extern "C" {
#endif
+/**
+ * This hook allows modules to insert filters for the current error response
+ * @param r the current request
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(void,insert_error_filter,(request_rec *r))
+
+/** This is an optimization. We keep a record of the filter_rec that
+ * stores the old_write filter, so that we can avoid strcmp's later.
+ */
+AP_DECLARE_DATA extern ap_filter_rec_t *ap_old_write_func;
+
/*
* Prototypes for routines which either talk directly back to the user,
* or control the ones that eventually do.
*/
-/* Read a request and fill in the fields. */
-
+/**
+ * Read a request and fill in the fields.
+ * @param c The current connection
+ * @return The new request_rec
+ */
request_rec *ap_read_request(conn_rec *c);
-/* Send a single HTTP header field */
-
-API_EXPORT_NONSTD(int) ap_send_header_field(request_rec *r, const char *fieldname,
- const char *fieldval);
-
-/* Send the minimal part of an HTTP response header... but modules should be
- * very careful about using this, and should prefer ap_send_http_header().
- * Much of the HTTP/1.1 implementation correctness depends on code in
- * ap_send_http_header().
+/**
+ * Read the mime-encoded headers.
+ * @param r The current request
*/
-API_EXPORT(void) ap_basic_http_header(request_rec *r);
-
-/* Send the Status-Line and header fields for HTTP response */
-
-API_EXPORT(void) ap_send_http_header(request_rec *l);
-
-/* Send the response to special method requests */
+AP_DECLARE(void) ap_get_mime_headers(request_rec *r);
-API_EXPORT(int) ap_send_http_trace(request_rec *r);
-int ap_send_http_options(request_rec *r);
+/**
+ * Optimized version of ap_get_mime_headers() that requires a
+ * temporary brigade to work with
+ * @param r The current request
+ * @param bb temp brigade
+ */
+AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r,
+ apr_bucket_brigade *bb);
/* Finish up stuff after a request */
-API_EXPORT(void) ap_finalize_request_protocol(request_rec *r);
-
-/* Send error back to client... last arg indicates error status in case
- * we get an error in the process of trying to deal with an ErrorDocument
- * to handle some other error. In that case, we print the default report
- * for the first thing that went wrong, and more briefly report on the
- * problem with the ErrorDocument.
+/**
+ * Called at completion of sending the response. It sends the terminating
+ * protocol information.
+ * @param r The current request
*/
-
-API_EXPORT(void) ap_send_error_response(request_rec *r, int recursive_error);
+AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r);
+
+/**
+ * Send error back to client.
+ * @param r The current request
+ * @param recursive_error last arg indicates error status in case we get
+ * an error in the process of trying to deal with an ErrorDocument
+ * to handle some other error. In that case, we print the default
+ * report for the first thing that went wrong, and more briefly report
+ * on the problem with the ErrorDocument.
+ */
+AP_DECLARE(void) ap_send_error_response(request_rec *r, int recursive_error);
/* Set last modified header line from the lastmod date of the associated file.
* Also, set content length.
*
- * May return an error status, typically USE_LOCAL_COPY (that when the
+ * May return an error status, typically HTTP_NOT_MODIFIED (that when the
* permit_cache argument is set to one).
*/
-API_EXPORT(int) ap_set_content_length(request_rec *r, long length);
-API_EXPORT(int) ap_set_keepalive(request_rec *r);
-API_EXPORT(ap_time_t) ap_rationalize_mtime(request_rec *r, ap_time_t mtime);
-API_EXPORT(char *) ap_make_etag(request_rec *r, int force_weak);
-API_EXPORT(void) ap_set_etag(request_rec *r);
-API_EXPORT(void) ap_set_last_modified(request_rec *r);
-API_EXPORT(int) ap_meets_conditions(request_rec *r);
+/**
+ * Set the content length for this request
+ * @param r The current request
+ * @param length The new content length
+ */
+AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t length);
+
+/**
+ * Set the keepalive status for this request
+ * @param r The current request
+ * @return 1 if keepalive can be set, 0 otherwise
+ */
+AP_DECLARE(int) ap_set_keepalive(request_rec *r);
+
+/**
+ * Return the latest rational time from a request/mtime pair. Mtime is
+ * returned unless it's in the future, in which case we return the current time.
+ * @param r The current request
+ * @param mtime The last modified time
+ * @return the latest rational time.
+ */
+AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime);
+
+/**
+ * Build the content-type that should be sent to the client from the
+ * content-type specified. The following rules are followed:
+ * - if type is NULL or "", return NULL (do not set content-type).
+ * - if charset adding is disabled, stop processing and return type.
+ * - then, if there are no parameters on type, add the default charset
+ * - return type
+ * @param r The current request
+ * @param type The content type
+ * @return The content-type
+ */
+AP_DECLARE(const char *) ap_make_content_type(request_rec *r,
+ const char *type);
+
+/**
+ * Precompile metadata structures used by ap_make_content_type()
+ * @param pool The pool to use for allocations
+ */
+AP_DECLARE(void) ap_setup_make_content_type(apr_pool_t *pool);
+
+/**
+ * Construct an entity tag from the resource information. If it's a real
+ * file, build in some of the file characteristics.
+ * @param r The current request
+ * @param force_weak Force the entity tag to be weak - it could be modified
+ * again in as short an interval.
+ * @return The entity tag
+ */
+AP_DECLARE(char *) ap_make_etag(request_rec *r, int force_weak);
+
+/**
+ * Set the E-tag outgoing header
+ * @param r The current request
+ */
+AP_DECLARE(void) ap_set_etag(request_rec *r);
+
+/**
+ * Set the last modified time for the file being sent
+ * @param r The current request
+ */
+AP_DECLARE(void) ap_set_last_modified(request_rec *r);
+
+/**
+ * Implements condition GET rules for HTTP/1.1 specification. This function
+ * inspects the client headers and determines if the response fulfills
+ * the requirements specified.
+ * @param r The current request
+ * @return OK if the response fulfills the condition GET rules, some
+ * other status code otherwise
+ */
+AP_DECLARE(int) ap_meets_conditions(request_rec *r);
/* Other ways to send stuff at the client. All of these keep track
* of bytes_sent automatically. This indirection is intended to make
* (Ditto the send_header stuff).
*/
-API_EXPORT(long) ap_send_fd(ap_file_t *fd, request_rec *r);
-API_EXPORT(long) ap_send_fd_length(ap_file_t *fd, request_rec *r, long length);
-
-API_EXPORT(long) ap_send_fb(BUFF *f, request_rec *r);
-API_EXPORT(long) ap_send_fb_length(BUFF *f, request_rec *r, long length);
-
-API_EXPORT(size_t) ap_send_mmap(ap_mmap_t *mm, request_rec *r, size_t offset,
- size_t length);
-
-/* Hmmm... could macrofy these for now, and maybe forever, though the
- * definitions of the macros would get a whole lot hairier.
+/**
+ * Send an entire file to the client, using sendfile if supported by the
+ * current platform
+ * @param fd The file to send.
+ * @param r The current request
+ * @param offset Offset into the file to start sending.
+ * @param length Amount of data to send
+ * @param nbytes Amount of data actually sent
*/
+AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r, apr_off_t offset,
+ apr_size_t length, apr_size_t *nbytes);
+
+#if APR_HAS_MMAP
+/**
+ * Send an MMAP'ed file to the client
+ * @param mm The MMAP'ed file to send
+ * @param r The current request
+ * @param offset The offset into the MMAP to start sending
+ * @param length The amount of data to send
+ * @return The number of bytes sent
+ */
+AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset,
+ size_t length);
+#endif
-API_EXPORT(int) ap_rputc(int c, request_rec *r);
-API_EXPORT(int) ap_rputs(const char *str, request_rec *r);
-API_EXPORT(int) ap_rwrite(const void *buf, int nbyte, request_rec *r);
-API_EXPORT_NONSTD(int) ap_rvputs(request_rec *r,...);
-API_EXPORT(int) ap_vrprintf(request_rec *r, const char *fmt, va_list vlist);
-API_EXPORT_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt,...)
- __attribute__((format(printf,2,3)));
-API_EXPORT(int) ap_rflush(request_rec *r);
-/*
- * Index used in custom_responses array for a specific error code
- * (only use outside protocol.c is in getting them configured).
+/**
+ * Register a new request method, and return the offset that will be
+ * associated with that method.
+ *
+ * @param p The pool to create registered method numbers from.
+ * @param methname The name of the new method to register.
+ * @return Ab int value representing an offset into a bitmask.
*/
+AP_DECLARE(int) ap_method_register(apr_pool_t *p, const char *methname);
-API_EXPORT(int) ap_index_of_response(int status);
+/**
+ * Initialize the method_registry and allocate memory for it.
+ *
+ * @param p Pool to allocate memory for the registry from.
+ */
+AP_DECLARE(void) ap_method_registry_init(apr_pool_t *p);
-/* Reading a block of data from the client connection (e.g., POST arg) */
+/**
+ * This is a convenience macro to ease with checking a mask
+ * against a method name.
+ */
+#define AP_METHOD_CHECK_ALLOWED(mask, methname) \
+ ((mask) & (AP_METHOD_BIT << ap_method_number_of((methname))))
-API_EXPORT(int) ap_setup_client_block(request_rec *r, int read_policy);
-API_EXPORT(int) ap_should_client_block(request_rec *r);
-API_EXPORT(long) ap_get_client_block(request_rec *r, char *buffer, int bufsiz);
-API_EXPORT(int) ap_discard_request_body(request_rec *r);
+/**
+ * Create a new method list with the specified number of preallocated
+ * slots for extension methods.
+ *
+ * @param p Pointer to a pool in which the structure should be
+ * allocated.
+ * @param nelts Number of preallocated extension slots
+ * @return Pointer to the newly created structure.
+ */
+AP_DECLARE(ap_method_list_t *) ap_make_method_list(apr_pool_t *p, int nelts);
-/* Sending a byterange */
-API_EXPORT(int) ap_set_byterange(request_rec *r);
-API_EXPORT(int) ap_each_byterange(request_rec *r, ap_off_t *offset,
- long *length);
+/**
+ * Copy a method list
+ *
+ * @param dest List to copy to
+ * @param src List to copy from
+ */
+AP_DECLARE(void) ap_copy_method_list(ap_method_list_t *dest,
+ ap_method_list_t *src);
-/* Support for the Basic authentication protocol. Note that there's
- * nothing that prevents these from being in mod_auth.c, except that other
- * modules which wanted to provide their own variants on finding users and
- * passwords for Basic auth (a fairly common request) would then require
- * mod_auth to be loaded or they wouldn't work.
+/**
+ * Search for an HTTP method name in an ap_method_list_t structure, and
+ * return true if found.
*
- * get_basic_auth_pw returns 0 (OK) if it set the 'pw' argument (and assured
- * a correct value in r->connection->user); otherwise it returns an error
- * code, either SERVER_ERROR if things are really confused, AUTH_REQUIRED
- * if no authentication at all seemed to be in use, or DECLINED if there
- * was authentication but it wasn't Basic (in which case, the caller should
- * presumably decline as well).
+ * @param method String containing the name of the method to check.
+ * @param l Pointer to a method list, such as r->allowed_methods.
+ * @return 1 if method is in the list, otherwise 0
+ */
+AP_DECLARE(int) ap_method_in_list(ap_method_list_t *l, const char *method);
+
+/**
+ * Add an HTTP method name to an ap_method_list_t structure if it isn't
+ * already listed.
*
- * note_basic_auth_failure arranges for the right stuff to be scribbled on
- * the HTTP return so that the client knows how to authenticate itself the
- * next time. As does note_digest_auth_failure for Digest auth.
+ * @param method String containing the name of the method to check.
+ * @param l Pointer to a method list, such as r->allowed_methods.
+ * @return None.
+ */
+AP_DECLARE(void) ap_method_list_add(ap_method_list_t *l, const char *method);
+
+/**
+ * Remove an HTTP method name from an ap_method_list_t structure.
*
- * note_auth_failure does the same thing, but will call the correct one
- * based on the authentication type in use.
+ * @param l Pointer to a method list, such as r->allowed_methods.
+ * @param method String containing the name of the method to remove.
+ * @return None.
+ */
+AP_DECLARE(void) ap_method_list_remove(ap_method_list_t *l,
+ const char *method);
+
+/**
+ * Reset a method list to be completely empty.
*
+ * @param l Pointer to a method list, such as r->allowed_methods.
+ * @return None.
*/
+AP_DECLARE(void) ap_clear_method_list(ap_method_list_t *l);
+
+/**
+ * Set the content type for this request (r->content_type).
+ * @param r The current request
+ * @param ct The new content type
+ * @warning This function must be called to set r->content_type in order
+ * for the AddOutputFilterByType directive to work correctly.
+ */
+AP_DECLARE(void) ap_set_content_type(request_rec *r, const char *ct);
-API_EXPORT(void) ap_note_auth_failure(request_rec *r);
-API_EXPORT(void) ap_note_basic_auth_failure(request_rec *r);
-API_EXPORT(void) ap_note_digest_auth_failure(request_rec *r);
-API_EXPORT(int) ap_get_basic_auth_pw(request_rec *r, const char **pw);
+/* Hmmm... could macrofy these for now, and maybe forever, though the
+ * definitions of the macros would get a whole lot hairier.
+ */
-/*
- * Setting up the protocol fields for subsidiary requests...
- * Also, a wrapup function to keep the internal accounting straight.
+/**
+ * Output one character for this request
+ * @param c the character to output
+ * @param r the current request
+ * @return The number of bytes sent
+ */
+AP_DECLARE(int) ap_rputc(int c, request_rec *r);
+
+/**
+ * Output a string for the current request
+ * @param str The string to output
+ * @param r The current request
+ * @return The number of bytes sent
+ */
+AP_DECLARE(int) ap_rputs(const char *str, request_rec *r);
+
+/**
+ * Write a buffer for the current request
+ * @param buf The buffer to write
+ * @param nbyte The number of bytes to send from the buffer
+ * @param r The current request
+ * @return The number of bytes sent
+ */
+AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r);
+
+/**
+ * Write an unspecified number of strings to the request
+ * @param r The current request
+ * @param ... The strings to write
+ * @return The number of bytes sent
+ */
+AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r,...);
+
+/**
+ * Output data to the client in a printf format
+ * @param r The current request
+ * @param fmt The format string
+ * @param vlist The arguments to use to fill out the format string
+ * @return The number of bytes sent
+ */
+AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list vlist);
+
+/**
+ * Output data to the client in a printf format
+ * @param r The current request
+ * @param fmt The format string
+ * @param ... The arguments to use to fill out the format string
+ * @return The number of bytes sent
*/
+AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt,...)
+ __attribute__((format(printf,2,3)));
+
+/**
+ * Flush all of the data for the current request to the client
+ * @param r The current request
+ * @return The number of bytes sent
+ */
+AP_DECLARE(int) ap_rflush(request_rec *r);
+
+/**
+ * Index used in custom_responses array for a specific error code
+ * (only use outside protocol.c is in getting them configured).
+ * @param status HTTP status code
+ * @return The index of the response
+ */
+AP_DECLARE(int) ap_index_of_response(int status);
+
+/**
+ * Return the Status-Line for a given status code (excluding the
+ * HTTP-Version field). If an invalid or unknown status code is
+ * passed, "500 Internal Server Error" will be returned.
+ * @param status The HTTP status code
+ * @return The Status-Line
+ */
+AP_DECLARE(const char *) ap_get_status_line(int status);
+
+/* Reading a block of data from the client connection (e.g., POST arg) */
-void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r);
-void ap_finalize_sub_req_protocol(request_rec *sub_r);
+/**
+ * Setup the client to allow Apache to read the request body.
+ * @param r The current request
+ * @param read_policy How the server should interpret a chunked
+ * transfer-encoding. One of: <pre>
+ * REQUEST_NO_BODY Send 413 error if message has any body
+ * REQUEST_CHUNKED_ERROR Send 411 error if body without Content-Length
+ * REQUEST_CHUNKED_DECHUNK If chunked, remove the chunks for me.
+ * </pre>
+ * @return either OK or an error code
+ */
+AP_DECLARE(int) ap_setup_client_block(request_rec *r, int read_policy);
+
+/**
+ * Determine if the client has sent any data. This also sends a
+ * 100 Continue response to HTTP/1.1 clients, so modules should not be called
+ * until the module is ready to read content.
+ * @warning Never call this function more than once.
+ * @param r The current request
+ * @return 0 if there is no message to read, 1 otherwise
+ */
+AP_DECLARE(int) ap_should_client_block(request_rec *r);
+
+/**
+ * Call this in a loop. It will put data into a buffer and return the length
+ * of the input block
+ * @param r The current request
+ * @param buffer The buffer in which to store the data
+ * @param bufsiz The size of the buffer
+ * @return Number of bytes inserted into the buffer. When done reading, 0
+ * if EOF, or -1 if there was an error
+ */
+AP_DECLARE(long) ap_get_client_block(request_rec *r, char *buffer, apr_size_t bufsiz);
+
+/**
+ * In HTTP/1.1, any method can have a body. However, most GET handlers
+ * wouldn't know what to do with a request body if they received one.
+ * This helper routine tests for and reads any message body in the request,
+ * simply discarding whatever it receives. We need to do this because
+ * failing to read the request body would cause it to be interpreted
+ * as the next request on a persistent connection.
+ * @param r The current request
+ * @return error status if request is malformed, OK otherwise
+ */
+AP_DECLARE(int) ap_discard_request_body(request_rec *r);
+
+/**
+ * Setup the output headers so that the client knows how to authenticate
+ * itself the next time, if an authentication request failed.
+ * @param r The current request
+ */
+AP_DECLARE(void) ap_note_auth_failure(request_rec *r);
+
+/**
+ * @deprecated @see ap_note_auth_failure
+ */
+AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r);
+
+/**
+ * @deprecated @see ap_note_auth_failure
+ */
+AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r);
+
+/**
+ * This hook allows modules to add support for a specific auth type to
+ * ap_note_auth_failure
+ * @param r the current request
+ * @param auth_type the configured auth_type
+ * @return OK, DECLINED
+ */
+AP_DECLARE_HOOK(int, note_auth_failure, (request_rec *r, const char *auth_type))
+
+/**
+ * Get the password from the request headers
+ * @param r The current request
+ * @param pw The password as set in the headers
+ * @return 0 (OK) if it set the 'pw' argument (and assured
+ * a correct value in r->user); otherwise it returns
+ * an error code, either HTTP_INTERNAL_SERVER_ERROR if things are
+ * really confused, HTTP_UNAUTHORIZED if no authentication at all
+ * seemed to be in use, or DECLINED if there was authentication but
+ * it wasn't Basic (in which case, the caller should presumably
+ * decline as well).
+ */
+AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw);
+
+/**
+ * parse_uri: break apart the uri
+ * @warning Side Effects:
+ * @li sets r->args to rest after '?' (or NULL if no '?')
+ * @li sets r->uri to request uri (without r->args part)
+ * @li sets r->hostname (if not set already) from request (scheme://host:port)
+ * @param r The current request
+ * @param uri The uri to break apart
+ */
+AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri);
+
+/**
+ * Get the next line of input for the request
+ * @param s The buffer into which to read the line
+ * @param n The size of the buffer
+ * @param r The request
+ * @param fold Whether to merge continuation lines
+ * @return The length of the line, if successful
+ * n, if the line is too big to fit in the buffer
+ * -1 for miscellaneous errors
+ */
+AP_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold);
-/* This is also useful for putting sub_reqs and internal_redirects together */
+/**
+ * Get the next line of input for the request
+ *
+ * Note: on ASCII boxes, ap_rgetline is a macro which simply calls
+ * ap_rgetline_core to get the line of input.
+ *
+ * on EBCDIC boxes, ap_rgetline is a wrapper function which
+ * translates ASCII protocol lines to the local EBCDIC code page
+ * after getting the line of input.
+ *
+ * @param s Pointer to the pointer to the buffer into which the line
+ * should be read; if *s==NULL, a buffer of the necessary size
+ * to hold the data will be allocated from the request pool
+ * @param n The size of the buffer
+ * @param read The length of the line.
+ * @param r The request
+ * @param fold Whether to merge continuation lines
+ * @param bb Working brigade to use when reading buckets
+ * @return APR_SUCCESS, if successful
+ * APR_ENOSPC, if the line is too big to fit in the buffer
+ * Other errors where appropriate
+ */
+#if APR_CHARSET_EBCDIC
+AP_DECLARE(apr_status_t) ap_rgetline(char **s, apr_size_t n,
+ apr_size_t *read,
+ request_rec *r, int fold,
+ apr_bucket_brigade *bb);
+#else /* ASCII box */
+#define ap_rgetline(s, n, read, r, fold, bb) \
+ ap_rgetline_core((s), (n), (read), (r), (fold), (bb))
+#endif
-CORE_EXPORT(void) ap_parse_uri(request_rec *r, const char *uri);
+/** @see ap_rgetline */
+AP_DECLARE(apr_status_t) ap_rgetline_core(char **s, apr_size_t n,
+ apr_size_t *read,
+ request_rec *r, int fold,
+ apr_bucket_brigade *bb);
-/* Get the method number associated with the given string, assumed to
+/**
+ * Get the method number associated with the given string, assumed to
* contain an HTTP method. Returns M_INVALID if not recognized.
+ * @param method A string containing a valid HTTP method
+ * @return The method number
*/
-API_EXPORT(int) ap_method_number_of(const char *method);
+AP_DECLARE(int) ap_method_number_of(const char *method);
+
+/**
+ * Get the method name associated with the given internal method
+ * number. Returns NULL if not recognized.
+ * @param p A pool to use for temporary allocations.
+ * @param methnum An integer value corresponding to an internal method number
+ * @return The name corresponding to the method number
+ */
+AP_DECLARE(const char *) ap_method_name_of(apr_pool_t *p, int methnum);
+
/* Hooks */
/*
* post_read_request --- run right after read_request or internal_redirect,
* and not run during any subrequests.
*/
-AP_DECLARE_HOOK(API_EXPORT,int,post_read_request,(request_rec *))
-AP_DECLARE_HOOK(API_EXPORT,int,log_transaction,(request_rec *))
-AP_DECLARE_HOOK(API_EXPORT,const char *,http_method,(const request_rec *))
-AP_DECLARE_HOOK(API_EXPORT,unsigned short,default_port,(const request_rec *))
+/**
+ * This hook allows modules to affect the request immediately after the request
+ * has been read, and before any other phases have been processes. This allows
+ * modules to make decisions based upon the input header fields
+ * @param r The current request
+ * @return OK or DECLINED
+ */
+AP_DECLARE_HOOK(int,post_read_request,(request_rec *r))
+
+/**
+ * This hook allows modules to perform any module-specific logging activities
+ * over and above the normal server things.
+ * @param r The current request
+ * @return OK, DECLINED, or HTTP_...
+ */
+AP_DECLARE_HOOK(int,log_transaction,(request_rec *r))
+
+/**
+ * This hook allows modules to retrieve the http scheme for a request. This
+ * allows Apache modules to easily extend the schemes that Apache understands
+ * @param r The current request
+ * @return The http scheme from the request
+ */
+AP_DECLARE_HOOK(const char *,http_scheme,(const request_rec *r))
+
+/**
+ * Return the default port from the current request
+ * @param r The current request
+ * @return The current port
+ */
+AP_DECLARE_HOOK(apr_port_t,default_port,(const request_rec *r))
+
+/** @see ap_bucket_type_error */
+typedef struct ap_bucket_error ap_bucket_error;
+
+/**
+ * @struct ap_bucket_error
+ * @brief A bucket referring to an HTTP error
+ *
+ * This bucket can be passed down the filter stack to indicate that an
+ * HTTP error occurred while running a filter. In order for this bucket
+ * to be used successfully, it MUST be sent as the first bucket in the
+ * first brigade to be sent from a given filter.
+ */
+struct ap_bucket_error {
+ /** Number of buckets using this memory */
+ apr_bucket_refcount refcount;
+ /** The error code */
+ int status;
+ /** The error string */
+ const char *data;
+};
+
+/** @see ap_bucket_type_error */
+AP_DECLARE_DATA extern const apr_bucket_type_t ap_bucket_type_error;
+
+/**
+ * Determine if a bucket is an error bucket
+ * @param e The bucket to inspect
+ * @return true or false
+ */
+#define AP_BUCKET_IS_ERROR(e) (e->type == &ap_bucket_type_error)
+
+/**
+ * Make the bucket passed in an error bucket
+ * @param b The bucket to make into an error bucket
+ * @param error The HTTP error code to put in the bucket.
+ * @param buf An optional error string to put in the bucket.
+ * @param p A pool to allocate out of.
+ * @return The new bucket, or NULL if allocation failed
+ */
+AP_DECLARE(apr_bucket *) ap_bucket_error_make(apr_bucket *b, int error,
+ const char *buf, apr_pool_t *p);
+
+/**
+ * Create a bucket referring to an HTTP error.
+ * @param error The HTTP error code to put in the bucket.
+ * @param buf An optional error string to put in the bucket.
+ * @param p A pool to allocate the error string out of.
+ * @param list The bucket allocator from which to allocate the bucket
+ * @return The new bucket, or NULL if allocation failed
+ */
+AP_DECLARE(apr_bucket *) ap_bucket_error_create(int error, const char *buf,
+ apr_pool_t *p,
+ apr_bucket_alloc_t *list);
+
+AP_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(ap_filter_t *f, apr_bucket_brigade *b);
+AP_DECLARE_NONSTD(apr_status_t) ap_http_header_filter(ap_filter_t *f, apr_bucket_brigade *b);
+AP_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *,
+ apr_bucket_brigade *);
+AP_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(ap_filter_t *f, apr_bucket_brigade *b);
+
+/**
+ * Sett up the protocol fields for subsidiary requests
+ * @param rnew New Sub Request
+ * @param r current request
+ */
+AP_DECLARE(void) ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r);
+
+/**
+ * A wrapup function to keep the internal accounting straight.
+ * Indicates that there is no more content coming.
+ * @param sub_r Subrequest that is now compete
+ */
+AP_DECLARE(void) ap_finalize_sub_req_protocol(request_rec *sub_r);
+
+/**
+ * Send an interim (HTTP 1xx) response immediately.
+ * @param r The request
+ * @param send_headers Whether to send&clear headers in r->headers_out
+ */
+AP_DECLARE(void) ap_send_interim_response(request_rec *r, int send_headers);
#ifdef __cplusplus
}
#endif
#endif /* !APACHE_HTTP_PROTOCOL_H */
+/** @} */
projects / apache / blobdiff