| /* ==================================================================== |
| * 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", |
| * 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/>. |
| * |
| * 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 |
| */ |
| |
| /* |
| |
| Note that the Explain() stuff is not yet complete. |
| Also note numerous FIXMEs and CHECKMEs which should be eliminated. |
| |
| If TESTING is set, then garbage collection doesn't delete ... probably a good |
| idea when hacking. |
| |
| 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 TESTING 0 |
| #undef EXPLAIN |
| |
| #include "apr_compat.h" |
| #include "apr_lib.h" |
| #include "apr_strings.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 |
| |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "http_protocol.h" |
| |
| |
| extern module AP_MODULE_DECLARE_DATA proxy_module; |
| |
| |
| /* for proxy_canonenc() */ |
| enum enctype { |
| enc_path, enc_search, enc_user, enc_fpath, enc_parm |
| }; |
| |
| #define HDR_APP (0) /* append header, for proxy_add_header() */ |
| #define HDR_REP (1) /* replace header, for proxy_add_header() */ |
| |
| #if APR_CHARSET_EBCDIC |
| #define CRLF "\r\n" |
| #else /*APR_CHARSET_EBCDIC*/ |
| #define CRLF "\015\012" |
| #endif /*APR_CHARSET_EBCDIC*/ |
| |
| #define DEFAULT_FTP_DATA_PORT 20 |
| #define DEFAULT_FTP_PORT 21 |
| #define DEFAULT_GOPHER_PORT 70 |
| #define DEFAULT_NNTP_PORT 119 |
| #define DEFAULT_WAIS_PORT 210 |
| #define DEFAULT_HTTPS_PORT 443 |
| #define DEFAULT_SNEWS_PORT 563 |
| #define DEFAULT_PROSPERO_PORT 1525 /* WARNING: conflict w/Oracle */ |
| |
| #define DEFAULT_CACHE_COMPLETION (0.9) |
| /* Some WWW schemes and their default ports; this is basically /etc/services */ |
| struct proxy_services { |
| const char *scheme; |
| int port; |
| }; |
| |
| /* 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; |
| }; |
| |
| struct origin_entry { |
| conn_rec *origin; |
| struct origin_entry *next; |
| }; |
| |
| 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; |
| /* apr_array_header_t *origin_array;*/ |
| conn_rec *origin; |
| 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; |
| } proxy_server_conf; |
| |
| struct per_thread_data { |
| struct hostent hpbuf; |
| u_long ipaddr; |
| char *charpbuf[2]; |
| }; |
| |
| 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 */ |
| |
| #if FTP |
| int ap_proxy_ftp_canon(request_rec *r, char *url); |
| int ap_proxy_ftp_handler(request_rec *r, ap_cache_el *c, char *url); |
| #endif |
| |
| /* 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); |
| void ap_proxy_send_headers(request_rec *r, const char *respline, apr_table_t *hdrs); |
| int ap_proxy_liststr(const char *list, const char *val); |
| char *ap_proxy_removestr(apr_pool_t *pool, const char *list, const char *val); |
| void ap_proxy_hash(const char *it, char *val, int ndepth, int nlength); |
| 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); |
| apr_status_t ap_proxy_doconnect(apr_socket_t *sock, char *host, apr_uint32_t port, request_rec *r); |
| /* This function is called by ap_table_do() for all header lines */ |
| int ap_proxy_send_hdr_line(void *p, const char *key, const char *value); |
| |
| #endif /*MOD_PROXY_H*/ |