proxy_http.c revision 700e336393ed1b32cf6f5967dcacb910a22505e9
b66914021bd429f41311d2909a7e9289866da7fdnd/* ====================================================================
b51bf223f42d43ca6b1b33c95124edcfa5a871a4nd * The Apache Software License, Version 1.1
9963f91528694fb21e93da8584c31f226c6de97akess *
b66914021bd429f41311d2909a7e9289866da7fdnd * Copyright (c) 2000 The Apache Software Foundation. All rights
b66914021bd429f41311d2909a7e9289866da7fdnd * reserved.
031b91a62d25106ae69d4693475c79618dd5e884fielding *
031b91a62d25106ae69d4693475c79618dd5e884fielding * Redistribution and use in source and binary forms, with or without
031b91a62d25106ae69d4693475c79618dd5e884fielding * modification, are permitted provided that the following conditions
031b91a62d25106ae69d4693475c79618dd5e884fielding * are met:
031b91a62d25106ae69d4693475c79618dd5e884fielding *
031b91a62d25106ae69d4693475c79618dd5e884fielding * 1. Redistributions of source code must retain the above copyright
b66914021bd429f41311d2909a7e9289866da7fdnd * notice, this list of conditions and the following disclaimer.
b66914021bd429f41311d2909a7e9289866da7fdnd *
b66914021bd429f41311d2909a7e9289866da7fdnd * 2. Redistributions in binary form must reproduce the above copyright
b66914021bd429f41311d2909a7e9289866da7fdnd * notice, this list of conditions and the following disclaimer in
b66914021bd429f41311d2909a7e9289866da7fdnd * the documentation and/or other materials provided with the
b66914021bd429f41311d2909a7e9289866da7fdnd * distribution.
b66914021bd429f41311d2909a7e9289866da7fdnd *
b66914021bd429f41311d2909a7e9289866da7fdnd * 3. The end-user documentation included with the redistribution,
b66914021bd429f41311d2909a7e9289866da7fdnd * if any, must include the following acknowledgment:
b66914021bd429f41311d2909a7e9289866da7fdnd * "This product includes software developed by the
eed2a23d9b5986937f1e2b1c120be97744508a72nd * Apache Software Foundation (http://www.apache.org/)."
eed2a23d9b5986937f1e2b1c120be97744508a72nd * Alternately, this acknowledgment may appear in the software itself,
eed2a23d9b5986937f1e2b1c120be97744508a72nd * if and wherever such third-party acknowledgments normally appear.
eed2a23d9b5986937f1e2b1c120be97744508a72nd *
eed2a23d9b5986937f1e2b1c120be97744508a72nd * 4. The names "Apache" and "Apache Software Foundation" must
eed2a23d9b5986937f1e2b1c120be97744508a72nd * not be used to endorse or promote products derived from this
eed2a23d9b5986937f1e2b1c120be97744508a72nd * software without prior written permission. For written
eed2a23d9b5986937f1e2b1c120be97744508a72nd * permission, please contact apache@apache.org.
eed2a23d9b5986937f1e2b1c120be97744508a72nd *
eed2a23d9b5986937f1e2b1c120be97744508a72nd * 5. Products derived from this software may not be called "Apache",
eed2a23d9b5986937f1e2b1c120be97744508a72nd * nor may "Apache" appear in their name, without prior written
eed2a23d9b5986937f1e2b1c120be97744508a72nd * permission of the Apache Software Foundation.
eed2a23d9b5986937f1e2b1c120be97744508a72nd *
eed2a23d9b5986937f1e2b1c120be97744508a72nd * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
eed2a23d9b5986937f1e2b1c120be97744508a72nd * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
eed2a23d9b5986937f1e2b1c120be97744508a72nd * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
eed2a23d9b5986937f1e2b1c120be97744508a72nd * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
eed2a23d9b5986937f1e2b1c120be97744508a72nd * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
eed2a23d9b5986937f1e2b1c120be97744508a72nd * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
eed2a23d9b5986937f1e2b1c120be97744508a72nd * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
eed2a23d9b5986937f1e2b1c120be97744508a72nd * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
eed2a23d9b5986937f1e2b1c120be97744508a72nd * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
eed2a23d9b5986937f1e2b1c120be97744508a72nd * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
eed2a23d9b5986937f1e2b1c120be97744508a72nd * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
eed2a23d9b5986937f1e2b1c120be97744508a72nd * SUCH DAMAGE.
eed2a23d9b5986937f1e2b1c120be97744508a72nd * ====================================================================
eed2a23d9b5986937f1e2b1c120be97744508a72nd *
eed2a23d9b5986937f1e2b1c120be97744508a72nd * This software consists of voluntary contributions made by many
eed2a23d9b5986937f1e2b1c120be97744508a72nd * individuals on behalf of the Apache Software Foundation. For more
eed2a23d9b5986937f1e2b1c120be97744508a72nd * information on the Apache Software Foundation, please see
eed2a23d9b5986937f1e2b1c120be97744508a72nd * <http://www.apache.org/>.
eed2a23d9b5986937f1e2b1c120be97744508a72nd *
eed2a23d9b5986937f1e2b1c120be97744508a72nd * Portions of this software are based upon public domain software
eed2a23d9b5986937f1e2b1c120be97744508a72nd * originally written at the National Center for Supercomputing Applications,
eed2a23d9b5986937f1e2b1c120be97744508a72nd * University of Illinois, Urbana-Champaign.
eed2a23d9b5986937f1e2b1c120be97744508a72nd */
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd/* HTTP routines for Apache proxy */
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd#define CORE_PRIVATE
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd#include "mod_proxy.h"
eed2a23d9b5986937f1e2b1c120be97744508a72nd#include "http_log.h"
eed2a23d9b5986937f1e2b1c120be97744508a72nd#include "http_main.h"
eed2a23d9b5986937f1e2b1c120be97744508a72nd#include "http_core.h"
eed2a23d9b5986937f1e2b1c120be97744508a72nd#include "http_connection.h"
f5e4573f2a3ca4b7d7d10bfb50950fa7eff27efbnilgun#include "util_date.h"
f5e4573f2a3ca4b7d7d10bfb50950fa7eff27efbnilgun
f5e4573f2a3ca4b7d7d10bfb50950fa7eff27efbnilgun/*
f5e4573f2a3ca4b7d7d10bfb50950fa7eff27efbnilgun * Canonicalise http-like URLs.
eed2a23d9b5986937f1e2b1c120be97744508a72nd * scheme is the scheme for the URL
eed2a23d9b5986937f1e2b1c120be97744508a72nd * url is the URL starting with the first '/'
eed2a23d9b5986937f1e2b1c120be97744508a72nd * def_port is the default port for this scheme.
eed2a23d9b5986937f1e2b1c120be97744508a72nd */
eed2a23d9b5986937f1e2b1c120be97744508a72ndint ap_proxy_http_canon(request_rec *r, char *url, const char *scheme, int def_port)
bcf004854091600aa279525d6772e1827114d39dnd{
eed2a23d9b5986937f1e2b1c120be97744508a72nd char *host, *path, *search, sport[7];
eed2a23d9b5986937f1e2b1c120be97744508a72nd const char *err;
eed2a23d9b5986937f1e2b1c120be97744508a72nd int port;
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd/* do syntatic check.
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd * We break the URL into host, port, path, search
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd */
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd port = def_port;
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd err = ap_proxy_canon_netloc(r->pool, &url, NULL, NULL, &host, &port);
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd if (err)
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd return HTTP_BAD_REQUEST;
eed2a23d9b5986937f1e2b1c120be97744508a72nd
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd/* now parse path/search args, according to rfc1738 */
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd/* N.B. if this isn't a true proxy request, then the URL _path_
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd * has already been decoded. True proxy requests have r->uri
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd * == r->unparsed_uri, and no others have that property.
eed2a23d9b5986937f1e2b1c120be97744508a72nd */
eed2a23d9b5986937f1e2b1c120be97744508a72nd if (r->uri == r->unparsed_uri) {
eed2a23d9b5986937f1e2b1c120be97744508a72nd search = strchr(url, '?');
eed2a23d9b5986937f1e2b1c120be97744508a72nd if (search != NULL)
eed2a23d9b5986937f1e2b1c120be97744508a72nd *(search++) = '\0';
eed2a23d9b5986937f1e2b1c120be97744508a72nd }
eed2a23d9b5986937f1e2b1c120be97744508a72nd else
9ead22080b72dcfbf031f25179e89a7fab346f8and search = r->args;
9ead22080b72dcfbf031f25179e89a7fab346f8and
9ead22080b72dcfbf031f25179e89a7fab346f8and/* process path */
eed2a23d9b5986937f1e2b1c120be97744508a72nd path = ap_proxy_canonenc(r->pool, url, strlen(url), enc_path, r->proxyreq);
eed2a23d9b5986937f1e2b1c120be97744508a72nd if (path == NULL)
eed2a23d9b5986937f1e2b1c120be97744508a72nd return HTTP_BAD_REQUEST;
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd if (port != def_port)
eed2a23d9b5986937f1e2b1c120be97744508a72nd apr_snprintf(sport, sizeof(sport), ":%d", port);
eed2a23d9b5986937f1e2b1c120be97744508a72nd else
9963f91528694fb21e93da8584c31f226c6de97akess sport[0] = '\0';
bcf004854091600aa279525d6772e1827114d39dnd
9963f91528694fb21e93da8584c31f226c6de97akess r->filename = apr_pstrcat(r->pool, "proxy:", scheme, "://", host, sport, "/",
eed2a23d9b5986937f1e2b1c120be97744508a72nd path, (search) ? "?" : "", (search) ? search : "", NULL);
eed2a23d9b5986937f1e2b1c120be97744508a72nd return OK;
b51bf223f42d43ca6b1b33c95124edcfa5a871a4nd}
b51bf223f42d43ca6b1b33c95124edcfa5a871a4nd
eed2a23d9b5986937f1e2b1c120be97744508a72ndstatic const char *proxy_location_reverse_map(request_rec *r, const char *url)
eed2a23d9b5986937f1e2b1c120be97744508a72nd{
eed2a23d9b5986937f1e2b1c120be97744508a72nd void *sconf;
eed2a23d9b5986937f1e2b1c120be97744508a72nd proxy_server_conf *conf;
8daf1ddf6285e4ded262f7a7a8e2e983a84a3cbdhumbedooh struct proxy_alias *ent;
eed2a23d9b5986937f1e2b1c120be97744508a72nd int i, l1, l2;
eed2a23d9b5986937f1e2b1c120be97744508a72nd char *u;
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd sconf = r->server->module_config;
eed2a23d9b5986937f1e2b1c120be97744508a72nd conf = (proxy_server_conf *)ap_get_module_config(sconf, &proxy_module);
b51bf223f42d43ca6b1b33c95124edcfa5a871a4nd l1 = strlen(url);
eed2a23d9b5986937f1e2b1c120be97744508a72nd ent = (struct proxy_alias *)conf->raliases->elts;
eed2a23d9b5986937f1e2b1c120be97744508a72nd for (i = 0; i < conf->raliases->nelts; i++) {
eed2a23d9b5986937f1e2b1c120be97744508a72nd l2 = strlen(ent[i].real);
eed2a23d9b5986937f1e2b1c120be97744508a72nd if (l1 >= l2 && strncmp(ent[i].real, url, l2) == 0) {
eed2a23d9b5986937f1e2b1c120be97744508a72nd u = apr_pstrcat(r->pool, ent[i].fake, &url[l2], NULL);
eed2a23d9b5986937f1e2b1c120be97744508a72nd return ap_construct_url(r->pool, u, r);
eed2a23d9b5986937f1e2b1c120be97744508a72nd }
eed2a23d9b5986937f1e2b1c120be97744508a72nd }
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd return url;
4930be147adf9e3f6d3ca9313a6524f9bf654b2dnd}
eed2a23d9b5986937f1e2b1c120be97744508a72nd
eed2a23d9b5986937f1e2b1c120be97744508a72nd/* Clear all connection-based headers from the incoming headers table */
eed2a23d9b5986937f1e2b1c120be97744508a72ndstatic void clear_connection(apr_pool_t *p, apr_table_t *headers)
eed2a23d9b5986937f1e2b1c120be97744508a72nd{
eed2a23d9b5986937f1e2b1c120be97744508a72nd const char *name;
eed2a23d9b5986937f1e2b1c120be97744508a72nd char *next = apr_pstrdup(p, apr_table_get(headers, "Connection"));
eed2a23d9b5986937f1e2b1c120be97744508a72nd
b3027c7641b1104ee50404cca6868e5101a7ca45nd apr_table_unset(headers, "Proxy-Connection");
b3ab5b870526aebe7da94a01350677b5087fc26and if (!next)
b3ab5b870526aebe7da94a01350677b5087fc26and return;
b3027c7641b1104ee50404cca6868e5101a7ca45nd
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd while (*next) {
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd name = next;
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd while (*next && !apr_isspace(*next) && (*next != ','))
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd ++next;
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd while (*next && (apr_isspace(*next) || (*next == ','))) {
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd *next = '\0';
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd ++next;
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd }
f1110149b5b6c28ecc39d1958d98ad9cfa8e41f3nd apr_table_unset(headers, name);
eed2a23d9b5986937f1e2b1c120be97744508a72nd }
eed2a23d9b5986937f1e2b1c120be97744508a72nd apr_table_unset(headers, "Connection");
}
/*
* 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.)
*/
int ap_proxy_http_handler(request_rec *r, char *url,
const char *proxyhost, int proxyport)
{
const char *strp;
char *strp2;
char *desthost;
apr_socket_t *sock;
int i, len, backasswards, content_length = -1;
apr_status_t err;
apr_array_header_t *reqhdrs_arr;
apr_table_t *resp_hdrs = NULL;
apr_table_entry_t *reqhdrs;
struct sockaddr_in server;
struct in_addr destaddr;
char buffer[HUGE_STRING_LEN];
char *buffer2;
char portstr[32];
apr_pool_t *p = r->pool;
int destport = 0;
char *destportstr = NULL;
const char *urlptr = NULL;
apr_ssize_t cntr;
apr_file_t *cachefp = NULL;
char *buf;
conn_rec *origin;
ap_bucket *e;
ap_bucket_brigade *bb = ap_brigade_create(r->pool);
void *sconf = r->server->module_config;
proxy_server_conf *conf =
(proxy_server_conf *) ap_get_module_config(sconf, &proxy_module);
struct noproxy_entry *npent = (struct noproxy_entry *) conf->noproxies->elts;
int nocache = 0;
memset(&server, '\0', sizeof(server));
server.sin_family = AF_INET;
/* We break the URL into host, port, path-search */
urlptr = strstr(url, "://");
if (urlptr == NULL)
return HTTP_BAD_REQUEST;
urlptr += 3;
destport = DEFAULT_HTTP_PORT;
strp = ap_strchr_c(urlptr, '/');
if (strp == NULL) {
desthost = apr_pstrdup(p, urlptr);
urlptr = "/";
}
else {
char *q = apr_palloc(p, strp - urlptr + 1);
memcpy(q, urlptr, strp - urlptr);
q[strp - urlptr] = '\0';
urlptr = strp;
desthost = q;
}
strp2 = ap_strchr(desthost, ':');
if (strp2 != NULL) {
*(strp2++) = '\0';
if (apr_isdigit(*strp2)) {
destport = atoi(strp2);
destportstr = strp2;
}
}
/* check if ProxyBlock directive on this host */
destaddr.s_addr = apr_inet_addr(desthost);
for (i = 0; i < conf->noproxies->nelts; i++) {
if ((npent[i].name != NULL
&& ap_strstr_c(desthost, npent[i].name) != NULL)
|| destaddr.s_addr == npent[i].addr.s_addr
|| npent[i].name[0] == '*')
return ap_proxyerror(r, HTTP_FORBIDDEN,
"Connect to remote machine blocked");
}
if ((apr_create_socket(&sock, APR_INET, SOCK_STREAM, r->pool)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"proxy: error creating socket");
return HTTP_INTERNAL_SERVER_ERROR;
}
#if !defined(TPF) && !defined(BEOS)
if (conf->recv_buffer_size > 0 && apr_setsocketopt(sock, APR_SO_RCVBUF,
conf->recv_buffer_size)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"setsockopt(SO_RCVBUF): Failed to set ProxyReceiveBufferSize, using default");
}
#endif
if (proxyhost != NULL) {
err = ap_proxy_doconnect(sock, (char *)proxyhost, proxyport, r);
}
else {
err = ap_proxy_doconnect(sock, (char *)desthost, destport, r);
}
if (err != APR_SUCCESS) {
if (proxyhost != NULL)
return DECLINED; /* try again another way */
else
return ap_proxyerror(r, HTTP_BAD_GATEWAY, apr_pstrcat(r->pool,
"Could not connect to remote machine: ",
desthost, NULL));
}
origin = ap_new_apr_connection(r->pool, r->server, sock, 0);
ap_add_output_filter("CORE", NULL, NULL, origin);
clear_connection(r->pool, r->headers_in); /* Strip connection-based headers */
buf = apr_pstrcat(r->pool, r->method, " ", proxyhost ? url : urlptr,
" HTTP/1.0" CRLF, NULL);
e = ap_bucket_create_pool(buf, strlen(buf), r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
if (destportstr != NULL && destport != DEFAULT_HTTP_PORT) {
buf = apr_pstrcat(r->pool, "Host: ", desthost, ":", destportstr, CRLF, NULL);
e = ap_bucket_create_pool(buf, strlen(buf), r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
}
else {
buf = apr_pstrcat(r->pool, "Host: ", desthost, CRLF, NULL);
e = ap_bucket_create_pool(buf, strlen(buf), r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
}
if (conf->viaopt == via_block) {
/* Block all outgoing Via: headers */
apr_table_unset(r->headers_in, "Via");
} else if (conf->viaopt != via_off) {
/* Create a "Via:" request header entry and merge it */
i = ap_get_server_port(r);
if (ap_is_default_port(i,r)) {
strcpy(portstr,"");
} else {
apr_snprintf(portstr, sizeof portstr, ":%d", i);
}
/* Generate outgoing Via: header with/without server comment: */
ap_table_mergen(r->headers_in, "Via",
(conf->viaopt == via_full)
? apr_psprintf(p, "%d.%d %s%s (%s)",
HTTP_VERSION_MAJOR(r->proto_num),
HTTP_VERSION_MINOR(r->proto_num),
ap_get_server_name(r), portstr,
AP_SERVER_BASEVERSION)
: apr_psprintf(p, "%d.%d %s%s",
HTTP_VERSION_MAJOR(r->proto_num),
HTTP_VERSION_MINOR(r->proto_num),
ap_get_server_name(r), portstr)
);
}
reqhdrs_arr = apr_table_elts(r->headers_in);
reqhdrs = (apr_table_entry_t *) reqhdrs_arr->elts;
for (i = 0; i < reqhdrs_arr->nelts; i++) {
if (reqhdrs[i].key == NULL || reqhdrs[i].val == NULL
/* Clear out headers not to send */
|| !strcasecmp(reqhdrs[i].key, "Host") /* Already sent */
/* XXX: @@@ FIXME: "Proxy-Authorization" should *only* be
* suppressed if THIS server requested the authentication,
* not when a frontend proxy requested it!
*/
|| !strcasecmp(reqhdrs[i].key, "Proxy-Authorization"))
continue;
buf = apr_pstrcat(r->pool, reqhdrs[i].key, ": ", reqhdrs[i].val, CRLF, NULL);
e = ap_bucket_create_pool(buf, strlen(buf), r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
}
e = ap_bucket_create_pool(CRLF, strlen(CRLF), r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
e = ap_bucket_create_flush();
AP_BRIGADE_INSERT_TAIL(bb, e);
ap_pass_brigade(origin->output_filters, bb);
/* send the request data, if any. */
if (ap_should_client_block(r)) {
while ((i = ap_get_client_block(r, buffer, sizeof buffer)) > 0) {
e = ap_bucket_create_pool(buffer, i, r->pool);
AP_BRIGADE_INSERT_TAIL(bb, e);
}
}
/* Flush the data to the origin server */
e = ap_bucket_create_flush();
AP_BRIGADE_INSERT_TAIL(bb, e);
ap_pass_brigade(origin->output_filters, bb);
ap_add_input_filter("HTTP_IN", NULL, NULL, origin);
ap_add_input_filter("CORE_IN", NULL, NULL, origin);
ap_brigade_destroy(bb);
bb = ap_brigade_create(r->pool);
/* Tell http_filter to grab the data one line at a time. */
origin->remain = 0;
ap_get_brigade(origin->input_filters, bb, AP_MODE_BLOCKING);
e = AP_BRIGADE_FIRST(bb);
ap_bucket_read(e, (const char **)&buffer2, &len, AP_BLOCK_READ);
if (len == -1) {
apr_close_socket(sock);
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"ap_get_brigade() - proxy receive - Error reading from remote server %s (length %d)",
proxyhost ? proxyhost : desthost, len);
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"Error reading from remote server");
} else if (len == 0) {
apr_close_socket(sock);
return ap_proxyerror(r, HTTP_BAD_GATEWAY,
"Document contains no data");
}
AP_BUCKET_REMOVE(e);
ap_bucket_destroy(e);
/* Is it an HTTP/1 response? This is buggy if we ever see an HTTP/1.10 */
if (ap_checkmask(buffer2, "HTTP/#.# ###*")) {
int major, minor;
if (2 != sscanf(buffer2, "HTTP/%u.%u", &major, &minor)) {
major = 1;
minor = 0;
}
/* If not an HTTP/1 message or if the status line was > 8192 bytes */
if (buffer2[5] != '1' || buffer2[len - 1] != '\n') {
apr_close_socket(sock);
return HTTP_BAD_GATEWAY;
}
backasswards = 0;
buffer2[--len] = '\0';
buffer2[12] = '\0';
r->status = atoi(&buffer2[9]);
buffer2[12] = ' ';
r->status_line = apr_pstrdup(p, &buffer2[9]);
/* 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. */
resp_hdrs = ap_proxy_read_headers(r, buffer, HUGE_STRING_LEN, origin);
if (resp_hdrs == NULL) {
ap_log_error(APLOG_MARK, APLOG_WARNING|APLOG_NOERRNO, 0, r->server,
"proxy: Bad HTTP/%d.%d header returned by %s (%s)",
major, minor, r->uri, r->method);
nocache = 1; /* do not cache this broken file */
}
else
{
clear_connection(p, resp_hdrs); /* Strip Connection hdrs */
if (apr_table_get(resp_hdrs, "Content-type")) {
r->content_type = apr_pstrdup(r->pool, apr_table_get(resp_hdrs, "Content-type"));
}
}
if (conf->viaopt != via_off && conf->viaopt != via_block) {
/* Create a "Via:" response header entry and merge it */
i = ap_get_server_port(r);
if (ap_is_default_port(i,r)) {
strcpy(portstr,"");
} else {
apr_snprintf(portstr, sizeof portstr, ":%d", i);
}
}
}
else {
/* an http/0.9 response */
backasswards = 1;
r->status = 200;
r->status_line = "200 OK";
}
/*
* HTTP/1.0 requires us to accept 3 types of dates, but only generate
* one type
*/
#if 0
if (ap_cache_el_header(c, "Date", &datestr) == APR_SUCCESS)
ap_cache_el_header_set(c, "Date", ap_proxy_date_canon(p, datestr));
if (ap_cache_el_header(c, "Last-Modified", &datestr) == APR_SUCCESS)
ap_cache_el_header_set(c, "Last-Modified", ap_proxy_date_canon(p, datestr));
if (ap_cache_el_header(c, "Expires", &datestr) == APR_SUCCESS)
ap_cache_el_header_set(c, "Expires", ap_proxy_date_canon(p, datestr));
if (ap_cache_el_header(c, "Location", &datestr) == APR_SUCCESS)
ap_cache_el_header_set(c, "Location", proxy_location_reverse_map(r, datestr));
if (ap_cache_el_header(c, "URI", &datestr) == APR_SUCCESS)
ap_cache_el_header_set(c, "URI", proxy_location_reverse_map(r, datestr));
#endif
/* write status line */
#if 0
if (!r->assbackwards)
ap_rvputs(r, "HTTP/1.0 ", r->status_line, CRLF, NULL);
if (cachefp && apr_puts(apr_pstrcat(r->pool, "HTTP/1.0 ",
r->status_line, CRLF, NULL), cachefp) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"proxy: error writing status line to cache");
ap_proxy_cache_error(&c);
cachefp = NULL;
}
#endif
#if 0
/* send headers */
ap_cache_el_header_walk(c, ap_proxy_send_hdr_line, r, NULL);
#endif
/*
if (!r->assbackwards)
ap_rputs(CRLF, r);
*/
r->sent_bodyct = 1;
/* Is it an HTTP/0.9 response? If so, send the extra data */
if (backasswards) {
cntr = len;
e = ap_bucket_create_heap(buffer, cntr, 0, NULL);
AP_BRIGADE_INSERT_TAIL(bb, e);
if (cachefp && apr_write(cachefp, buffer, &cntr) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"proxy: error writing extra data to cache");
}
}
/* 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) {
proxy_completion pc;
pc.content_length = content_length;
pc.cache_completion = conf->cache_completion;
origin->remain = content_length;
while (ap_get_brigade(origin->input_filters, bb, AP_MODE_BLOCKING) == APR_SUCCESS) {
if (AP_BUCKET_IS_EOS(AP_BRIGADE_LAST(bb))) {
ap_pass_brigade(r->output_filters, bb);
break;
}
ap_pass_brigade(r->output_filters, bb);
ap_brigade_destroy(bb);
bb = ap_brigade_create(r->pool);
}
}
apr_close_socket(sock);
return OK;
}