MAJOR=4
MINOR=63
DEVNAME=tty63
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 * 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.
 */

#ifndef MOD_PROXY_H
#define MOD_PROXY_H

/**
 * @file  mod_proxy.h
 * @brief Proxy Extension Module for Apache
 *
 * @defgroup MOD_PROXY mod_proxy
 * @ingroup  APACHE_MODS
 * @{
 */

#include "apr_hooks.h"
#include "apr_optional.h"
#include "apr.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_buckets.h"
#include "apr_md5.h"
#include "apr_network_io.h"
#include "apr_pools.h"
#include "apr_strings.h"
#include "apr_uri.h"
#include "apr_date.h"
#include "apr_strmatch.h"
#include "apr_fnmatch.h"
#include "apr_reslist.h"
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "apr_uuid.h"
#include "util_mutex.h"
#include "apr_global_mutex.h"
#include "apr_thread_mutex.h"

#include "httpd.h"
#include "http_config.h"
#include "ap_config.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_request.h"
#include "http_vhost.h"
#include "http_main.h"
#include "http_log.h"
#include "http_connection.h"
#include "http_ssl.h"
#include "util_filter.h"
#include "util_ebcdic.h"
#include "ap_provider.h"
#include "ap_slotmem.h"

#if APR_HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#if APR_HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

/* for proxy_canonenc() */
enum enctype {
    enc_path, enc_search, enc_user, enc_fpath, enc_parm
};

/* Flags for ap_proxy_canonenc_ex */
#define PROXY_CANONENC_FORCEDEC 0x01
#define PROXY_CANONENC_NOENCODEDSLASHENCODING 0x02

typedef enum {
    NONE, TCP, OPTIONS, HEAD, GET, CPING, PROVIDER, OPTIONS11, HEAD11, GET11, EOT
} hcmethod_t;

typedef struct {
    hcmethod_t method;
    char *name;
    int implemented;
} proxy_hcmethods_t;

typedef struct {
    unsigned int bit;
    char flag;
    const char *name;
} proxy_wstat_t;

#define BALANCER_PREFIX "balancer://"

#if APR_CHARSET_EBCDIC
#define CRLF   "\r\n"
#else /*APR_CHARSET_EBCDIC*/
#define CRLF   "\015\012"
#endif /*APR_CHARSET_EBCDIC*/

/* default Max-Forwards header setting */
/* Set this to -1, which complies with RFC2616 by not setting
 * max-forwards if the client didn't send it to us.
 */
#define DEFAULT_MAX_FORWARDS    -1

typedef struct proxy_balancer  proxy_balancer;
typedef struct proxy_worker    proxy_worker;
typedef struct proxy_conn_pool proxy_conn_pool;
typedef struct proxy_balancer_method proxy_balancer_method;

/* static information about a remote proxy */
struct proxy_remote {
    const char *scheme;     /* the schemes handled by this proxy, or '*' */
    const char *protocol;   /* the scheme used to talk to this proxy */
    const char *hostname;   /* the hostname of this proxy */
    ap_regex_t *regexp;     /* compiled regex (if any) for the remote */
    const char *creds;      /* auth credentials (if any) for the proxy */
    int use_regex;          /* simple boolean. True if we have a regex pattern */
    apr_port_t  port;       /* the port for this proxy */
};

#define PROXYPASS_NOCANON 0x01
#define PROXYPASS_INTERPOLATE 0x02
#define PROXYPASS_NOQUERY 0x04
#define PROXYPASS_MAP_ENCODED 0x08
#define PROXYPASS_MAP_SERVLET 0x18 /* + MAP_ENCODED */
struct proxy_alias {
    const char  *real;
    const char  *fake;
    ap_regex_t  *regex;
    unsigned int flags;
    proxy_balancer *balancer; /* only valid for reverse-proxys */
};