mod_proxy.h revision 35c9e4d2c0a6465746a98958ef756114834461e6
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 The Apache Software Foundation. All rights
* reserved.
*
* 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",
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*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* 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/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
#ifndef MOD_PROXY_H
#define MOD_PROXY_H
/*
* Main include file for the Apache proxy
*/
/*
Also note numerous FIXMEs and CHECKMEs which should be eliminated.
This code is once again experimental!
Things to do:
1. Make it completely work (for FTP too)
2. HTTP/1.1
Chuck Murcko <chuck@topsail.org> 02-06-01
*/
#define CORE_PRIVATE
#include "apr.h"
#include "apr_compat.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_buckets.h"
#include "apr_md5.h"
#include "apr_pools.h"
#include "apr_strings.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 "util_filter.h"
#include "util_date.h"
#include "util_uri.h"
#include "mod_core.h"
#if APR_HAVE_NETDB_H
#include <netdb.h>
#endif
#if APR_HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if APR_HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#if APR_HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
extern module AP_MODULE_DECLARE_DATA proxy_module;
/* for proxy_canonenc() */
enum enctype {
enc_path, enc_search, enc_user, enc_fpath, enc_parm
};
#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 */
#define DEFAULT_MAX_FORWARDS 10
/* 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 */
int port; /* the port for this proxy */
};
struct proxy_alias {
const char *real;
const char *fake;
};
struct dirconn_entry {
char *name;
struct in_addr addr, mask;
struct hostent *hostentry;
int (*matcher) (struct dirconn_entry * This, request_rec *r);
};
struct noproxy_entry {
const char *name;
struct apr_sockaddr_t *addr;
};
typedef struct {
apr_array_header_t *proxies;
apr_array_header_t *aliases;
apr_array_header_t *raliases;
apr_array_header_t *noproxies;
apr_array_header_t *dirconn;
apr_array_header_t *allowed_connect_ports;
const char *domain; /* domain name to use in absence of a domain name in the request */
int req; /* true if proxy requests are enabled */
char req_set;
enum {
via_off,
via_on,
via_block,
via_full
} viaopt; /* how to deal with proxy Via: headers */
char viaopt_set;
size_t recv_buffer_size;
char recv_buffer_size_set;
long maxfwd;
char maxfwd_set;
} proxy_server_conf;
struct per_thread_data {
struct hostent hpbuf;
u_long ipaddr;
char *charpbuf[2];
};
typedef struct {
conn_rec *connection;
char *hostname;
apr_port_t port;
} proxy_conn_rec;
typedef struct {
float cache_completion; /* completion percentage */
int content_length; /* length of the content */
} proxy_completion;
/* Function prototypes */
/* proxy_connect.c */
int ap_proxy_connect_handler(request_rec *r, char *url,
const char *proxyhost, int proxyport);
/* proxy_ftp.c */
int ap_proxy_ftp_canon(request_rec *r, char *url);
int ap_proxy_ftp_handler(request_rec *r, char *url);
apr_status_t ap_proxy_send_dir_filter(ap_filter_t *f,
apr_bucket_brigade *bb);
/* proxy_http.c */
int ap_proxy_http_canon(request_rec *r, char *url, const char *scheme,
int def_port);
int ap_proxy_http_handler(request_rec *r, char *url,
const char *proxyhost, int proxyport);
/* proxy_util.c */
request_rec *make_fake_req(conn_rec *c, request_rec *r);
int ap_proxy_hex2c(const char *x);
void ap_proxy_c2hex(int ch, char *x);
char *ap_proxy_canonenc(apr_pool_t *p, const char *x, int len, enum enctype t,
int isenc);
char *ap_proxy_canon_netloc(apr_pool_t *p, char **const urlp, char **userp,
char **passwordp, char **hostp, int *port);
const char *ap_proxy_date_canon(apr_pool_t *p, const char *x);
apr_table_t *ap_proxy_read_headers(request_rec *r, request_rec *rp, char *buffer, int size, conn_rec *c);
int ap_proxy_liststr(const char *list, const char *val);
char *ap_proxy_removestr(apr_pool_t *pool, const char *list, const char *val);
int ap_proxy_hex2sec(const char *x);
void ap_proxy_sec2hex(int t, char *y);
const char *ap_proxy_host2addr(const char *host, struct hostent *reqhp);
int ap_proxyerror(request_rec *r, int statuscode, const char *message);
int ap_proxy_is_ipaddr(struct dirconn_entry *This, apr_pool_t *p);
int ap_proxy_is_domainname(struct dirconn_entry *This, apr_pool_t *p);
int ap_proxy_is_hostname(struct dirconn_entry *This, apr_pool_t *p);
int ap_proxy_is_word(struct dirconn_entry *This, apr_pool_t *p);
int ap_proxy_checkproxyblock(request_rec *r, proxy_server_conf *conf, apr_sockaddr_t *uri_addr);
int ap_proxy_pre_http_connection(conn_rec *c, request_rec *r);
apr_status_t ap_proxy_string_read(conn_rec *c, apr_bucket_brigade *bb, char *buff, size_t bufflen, int *eos);
void ap_proxy_reset_output_filters(conn_rec *c);
#endif /*MOD_PROXY_H*/