proxy_http.c revision b4c8a80f7dbfc9b56dbe03bdc28f0b5eb5f23697
/* ====================================================================
* Copyright (c) 1996-1999 The Apache Group. 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
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" 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 names without prior written
* permission of the Apache Group.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``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 GROUP 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 Group and was originally based
* on public domain software written at the National Center for
* Supercomputing Applications, University of Illinois, Urbana-Champaign.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
*/
/* HTTP routines for Apache proxy */
#include "mod_proxy.h"
#include "http_log.h"
#include "http_main.h"
#include "http_core.h"
#include "util_date.h"
/*
* Canonicalise http-like URLs.
* scheme is the scheme for the URL
* url is the URL starting with the first '/'
* def_port is the default port for this scheme.
*/
{
const char *err;
int port;
/* do syntatic check.
* We break the URL into host, port, path, search
*/
if (err)
return HTTP_BAD_REQUEST;
/* N.B. if this isn't a true proxy request, then the URL _path_
* has already been decoded. True proxy requests have r->uri
* == r->unparsed_uri, and no others have that property.
*/
if (r->uri == r->unparsed_uri) {
*(search++) = '\0';
}
else
/* process path */
return HTTP_BAD_REQUEST;
else
sport[0] = '\0';
return OK;
}
{
void *sconf;
struct proxy_alias *ent;
char *u;
return ap_construct_url(r->pool, u, r);
}
}
return url;
}
/* Clear all connection-based headers from the incoming headers ap_table_t */
{
const char *name;
if (!next)
return;
while (*next) {
++next;
*next = '\0';
++next;
}
}
}
/*
* This handles http:// URLs, and other URLs using a remote proxy over http
* If proxyhost is NULL, then contact the server directly, otherwise
* go via the proxy.
* Note that if a proxy is used, then URLs other than http: can be accessed,
* also, if we have trouble which is clearly specific to the proxy, then
* we return DECLINED so that we can try another proxy. (Or the direct
* route.)
*/
{
const char *strp;
char *strp2;
struct sockaddr_in server;
BUFF *f;
char buffer[HUGE_STRING_LEN];
char portstr[32];
ap_context_t *p = r->pool;
const long int zero = 0L;
int destport = 0;
char *destportstr = NULL;
const char *datestr;
struct tbl_do_args tdo;
int nocache = 0;
/* We break the URL into host, port, path-search */
return HTTP_BAD_REQUEST;
urlptr += 3;
urlptr = "/";
}
else {
desthost = q;
}
*(strp2++) = '\0';
if (ap_isdigit(*strp2)) {
destportstr = strp2;
}
}
/* check if ProxyBlock directive on this host */
return ap_proxyerror(r, HTTP_FORBIDDEN,
"Connect to remote machine blocked");
}
return DECLINED; /* try another */
}
else {
}
if (sock == -1) {
"proxy: error creating socket");
return HTTP_INTERNAL_SERVER_ERROR;
}
if (conf->recv_buffer_size) {
(const char *) &conf->recv_buffer_size, sizeof(int))
== -1) {
"setsockopt(SO_RCVBUF): Failed to set ProxyReceiveBufferSize, using default");
}
}
#ifdef SINIX_D_RESOLVER_BUG
{
if (i == 0)
break;
}
}
#else
j = 0;
sizeof(struct in_addr));
if (i == 0)
break;
j++;
}
#endif
if (i == -1) {
return DECLINED; /* try again another way */
else
"Could not connect to remote machine: ",
}
ap_bpushfd(f, sock);
NULL);
else
/* Block all outgoing Via: headers */
/* Create a "Via:" request header entry and merge it */
i = ap_get_server_port(r);
if (ap_is_default_port(i,r)) {
} else {
}
? ap_psprintf(p, "%d.%d %s%s (%s)",
: ap_psprintf(p, "%d.%d %s%s",
);
}
for (i = 0; i < reqhdrs_arr->nelts; i++) {
/* Clear out headers not to send */
/* XXX: @@@ FIXME: "Proxy-Authorization" should *only* be
* suppressed if THIS server requested the authentication,
* not when a frontend proxy requested it!
*/
continue;
}
/* send the request data, if any. */
if (ap_should_client_block(r)) {
}
ap_bflush(f);
if (len == -1) {
ap_bclose(f);
"ap_bgets() - proxy receive - Error reading from remote server %s (length %d)",
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"Error reading from remote server");
} else if (len == 0) {
ap_bclose(f);
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"Document contains no data");
}
/* Is it an HTTP/1 response? This is buggy if we ever see an HTTP/1.10 */
major = 1;
minor = 0;
}
/* If not an HTTP/1 message or if the status line was > 8192 bytes */
ap_bclose(f);
return HTTP_BAD_GATEWAY;
}
backasswards = 0;
/* read the headers. */
/* N.B. for HTTP/1.0 clients, we have to fold line-wrapped headers */
/* Also, take care with headers with multiple occurences. */
"proxy: Bad HTTP/%d.%d header returned by %s (%s)",
}
/* Create a "Via:" response header entry and merge it */
i = ap_get_server_port(r);
if (ap_is_default_port(i,r)) {
} else {
}
? ap_psprintf(p, "%d.%d %s%s (%s)",
: ap_psprintf(p, "%d.%d %s%s",
);
}
}
else {
/* an http/0.9 response */
backasswards = 1;
r->status = 200;
r->status_line = "200 OK";
/* no headers */
}
/*
* HTTP/1.0 requires us to accept 3 types of dates, but only generate
* one type
*/
/* check if NoCache directive on this host */
nocache = 1;
}
if (i != DECLINED) {
ap_bclose(f);
return i;
}
/* write status line */
if (!r->assbackwards)
"proxy: error writing status line to %s", c->tempfile);
c = ap_proxy_cache_error(c);
}
/* send headers */
if (!r->assbackwards)
"proxy: error writing CRLF to %s", c->tempfile);
c = ap_proxy_cache_error(c);
}
r->sent_bodyct = 1;
/* Is it an HTTP/0.9 respose? If so, send the extra data */
if (backasswards) {
"proxy: error writing extra data to %s", c->tempfile);
c = ap_proxy_cache_error(c);
}
}
#ifdef CHARSET_EBCDIC
*/
#endif
/* send body */
/* if header only, then cache will be NULL */
/* HTTP/1.0 tells us to read to EOF, rather than content-length bytes */
if (!r->header_only) {
/* we need to set this for ap_proxy_send_fb()... */
ap_proxy_send_fb(f, r, c);
}
ap_bclose(f);
return OK;
}