/* 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

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * 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  mod_core.h

 * @brief mod_core private header file

 *

 * @defgroup MOD_CORE mod_core

 * @ingroup  APACHE_MODS

 * @{

 */

#ifndef MOD_CORE_H

#define MOD_CORE_H

#include "apr.h"

#include "apr_buckets.h"

#include "httpd.h"

#include "util_filter.h"

#ifdef __cplusplus

extern "C" {

#endif

/* Handles for core filters */

AP_DECLARE_DATA extern ap_filter_rec_t *ap_http_input_filter_handle;

AP_DECLARE_DATA extern ap_filter_rec_t *ap_http_header_filter_handle;

AP_DECLARE_DATA extern ap_filter_rec_t *ap_chunk_filter_handle;

AP_DECLARE_DATA extern ap_filter_rec_t *ap_http_outerror_filter_handle;

AP_DECLARE_DATA extern ap_filter_rec_t *ap_byterange_filter_handle;

/*

 * These (input) filters are internal to the mod_core operation.

 */

apr_status_t ap_http_filter(ap_filter_t *f, apr_bucket_brigade *b,

                            ap_input_mode_t mode, apr_read_type_e block,

                            apr_off_t readbytes);

/* HTTP/1.1 chunked transfer encoding filter. */

apr_status_t ap_http_chunk_filter(ap_filter_t *f, apr_bucket_brigade *b);

/* Filter to handle any error buckets on output */

apr_status_t ap_http_outerror_filter(ap_filter_t *f,

                                     apr_bucket_brigade *b);

char *ap_response_code_string(request_rec *r, int error_index);

/**

 * Send the minimal part of an HTTP response header.

 * @param r The current request

 * @param bb The brigade to add the header to.

 * @warning Modules should be very careful about using this, and should

 *          the default behavior.  Much of the HTTP/1.1 implementation

 *          correctness depends on the full headers.

 * @fn void ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb)

 */

AP_DECLARE(void) ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb);

/**

 * Send an appropriate response to an http TRACE request.

 * @param r The current request

 * @note returns DONE or the HTTP status error if it handles the TRACE,

 * or DECLINED if the request was not for TRACE.

 * request method was not TRACE.

 */

AP_DECLARE_NONSTD(int) ap_send_http_trace(request_rec *r);

/**

 * Send an appropriate response to an http OPTIONS request.

 * @param r The current request

 */

AP_DECLARE(int) ap_send_http_options(request_rec *r);

/* Used for multipart/byteranges boundary string */

AP_DECLARE_DATA extern const char *ap_multipart_boundary;

/* Init RNG at startup */

AP_CORE_DECLARE(void) ap_init_rng(apr_pool_t *p);

/* Update RNG state in parent after fork */

AP_CORE_DECLARE(void) ap_random_parent_after_fork(void);

#ifdef __cplusplus

}

#endif

#endif  /* !MOD_CORE_H */

/** @} */