MAJOR=4
MINOR=13
DEVNAME=tty13
  A   	ˆl–Ãa¾” ”ÔD¨ 	Å¿q¦”Å£¿ƒ}÷š_†I|¥+a–Ãa¾”*j"Tâ‚Á?q±)‹FÿÄ '     	/* 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  util_fcgi.h
 * @brief FastCGI protocol definitions and support routines
 *
 * @defgroup APACHE_CORE_FASTCGI FastCGI Tools
 * @ingroup  APACHE_CORE
 * @{
 */

#ifndef APACHE_UTIL_FCGI_H
#define APACHE_UTIL_FCGI_H

#ifdef __cplusplus
extern "C" {
#endif

#include "httpd.h"

/**
 * @brief A structure that represents the fixed header fields
 * at the beginning of a "FastCGI record" (i.e., the data prior
 * to content data and padding).
 */
typedef struct {
    /** See values for version, below */
    unsigned char version;
    /** See values for type, below */
    unsigned char type;
    /** request id, in two parts */
    unsigned char requestIdB1;
    unsigned char requestIdB0;
    /** content length, in two parts */
    unsigned char contentLengthB1;
    unsigned char contentLengthB0;
    /** padding length */
    unsigned char paddingLength;
    /** 8-bit reserved field */
    unsigned char reserved;
} ap_fcgi_header;

/*
 * Number of bytes in the header portion of a FastCGI record
 * (i.e., ap_fcgi_header structure).  Future versions of the
 * protocol may increase the size.
 */
#define AP_FCGI_HEADER_LEN  8

/*
 * Maximum number of bytes in the content portion of a FastCGI record.
 */
#define AP_FCGI_MAX_CONTENT_LEN 65535

/**
 * Possible values for the version field of ap_fcgi_header
 */
#define AP_FCGI_VERSION_1 1

/**
 * Possible values for the type field of ap_fcgi_header
 */
#define AP_FCGI_BEGIN_REQUEST       1
#define AP_FCGI_ABORT_REQUEST       2
#define AP_FCGI_END_REQUEST         3
#define AP_FCGI_PARAMS              4
#define AP_FCGI_STDIN               5
#define AP_FCGI_STDOUT              6
#define AP_FCGI_STDERR              7
#define AP_FCGI_DATA                8
#define AP_FCGI_GET_VALUES          9
#define AP_FCGI_GET_VALUES_RESULT  10
#define AP_FCGI_UNKNOWN_TYPE       11
#define AP_FCGI_MAXTYPE (AP_FCGI_UNKNOWN_TYPE)

/**
 * Offsets of the various fields of ap_fcgi_header
 */
#define AP_FCGI_HDR_VERSION_OFFSET         0
#define AP_FCGI_HDR_TYPE_OFFSET            1
#define AP_FCGI_HDR_REQUEST_ID_B1_OFFSET   2
#define AP_FCGI_HDR_REQUEST_ID_B0_OFFSET   3
#define AP_FCGI_HDR_CONTENT_LEN_B1_OFFSET  4
#define AP_FCGI_HDR_CONTENT_LEN_B0_OFFSET  5
#define AP_FCGI_HDR_PADDING_LEN_OFFSET     6
#define AP_FCGI_HDR_RESERVED_OFFSET        7

/**
 * @brief This represents the content data of the FastCGI record when
 * the type is AP_FCGI_BEGIN_REQUEST.
 */
typedef struct {
    /**
     * role, in two parts
     * See values for role, below
     */
    unsigned char roleB1;
    unsigned char roleB0;
    /**
     * flags
     * See values for flags bits, below
     */
    unsigned char flags;
    /** reserved */
    unsigned char reserved[5];
} ap_fcgi_begin_request_body;

/*
 * Values for role component of ap_fcgi_begin_request_body
 */
#define AP_FCGI_RESPONDER  1
#define AP_FCGI_AUTHORIZER 2
#define AP_FCGI_FILTER     3

/*
 * Values for flags bits of ap_fcgi_begin_request_body
 */
#define AP_FCGI_KEEP_CONN  1  /* otherwise the application closes */

/**
 * Offsets of the various fields of ap_fcgi_begin_request_body
 */
#define AP_FCGI_BRB_ROLEB1_OFFSET       0
#define AP_FCGI_BRB_ROLEB0_OFFSET       1