diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/modules/proxy/proxy_connect.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/modules/proxy/proxy_connect.c | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/rubbos/app/httpd-2.0.64/modules/proxy/proxy_connect.c b/rubbos/app/httpd-2.0.64/modules/proxy/proxy_connect.c deleted file mode 100644 index 20e40ebb..00000000 --- a/rubbos/app/httpd-2.0.64/modules/proxy/proxy_connect.c +++ /dev/null @@ -1,377 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * 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. - */ - -/* CONNECT method for Apache proxy */ - -#define CORE_PRIVATE - -#include "mod_proxy.h" -#include "apr_poll.h" - -module AP_MODULE_DECLARE_DATA proxy_connect_module; - -int ap_proxy_connect_canon(request_rec *r, char *url); -int ap_proxy_connect_handler(request_rec *r, proxy_server_conf *conf, - char *url, const char *proxyname, - apr_port_t proxyport); - -/* - * This handles Netscape CONNECT method secure proxy requests. - * A connection is opened to the specified host and data is - * passed through between the WWW site and the browser. - * - * This code is based on the INTERNET-DRAFT document - * "Tunneling SSL Through a WWW Proxy" currently at - * http://www.mcom.com/newsref/std/tunneling_ssl.html. - * - * If proxyhost and proxyport are set, we send a CONNECT to - * the specified proxy.. - * - * FIXME: this doesn't log the number of bytes sent, but - * that may be okay, since the data is supposed to - * be transparent. In fact, this doesn't log at all - * yet. 8^) - * FIXME: doesn't check any headers initally sent from the - * client. - * FIXME: should allow authentication, but hopefully the - * generic proxy authentication is good enough. - * FIXME: no check for r->assbackwards, whatever that is. - */ - -static int -allowed_port(proxy_server_conf *conf, int port) -{ - int i; - int *list = (int *) conf->allowed_connect_ports->elts; - - for(i = 0; i < conf->allowed_connect_ports->nelts; i++) { - if(port == list[i]) - return 1; - } - return 0; -} - -/* canonicalise CONNECT URLs. */ -int ap_proxy_connect_canon(request_rec *r, char *url) -{ - - if (r->method_number != M_CONNECT) { - return DECLINED; - } - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: canonicalising URL %s", url); - - return OK; -} - -/* CONNECT handler */ -int ap_proxy_connect_handler(request_rec *r, proxy_server_conf *conf, - char *url, const char *proxyname, - apr_port_t proxyport) -{ - apr_pool_t *p = r->pool; - apr_socket_t *sock; - apr_status_t err, rv; - apr_size_t i, o, nbytes; - char buffer[HUGE_STRING_LEN]; - apr_socket_t *client_socket = ap_get_module_config(r->connection->conn_config, &core_module); - int failed; - apr_pollfd_t *pollfd; - apr_int32_t pollcnt; - apr_int16_t pollevent; - apr_sockaddr_t *uri_addr, *connect_addr; - - apr_uri_t uri; - const char *connectname; - int connectport = 0; - - /* is this for us? */ - if (r->method_number != M_CONNECT) { - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: declining URL %s", url); - return DECLINED; - } - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: serving URL %s", url); - - - /* - * Step One: Determine Who To Connect To - * - * Break up the URL to determine the host to connect to - */ - - /* we break the URL into host, port, uri */ - if (APR_SUCCESS != apr_uri_parse_hostinfo(p, url, &uri)) { - return ap_proxyerror(r, HTTP_BAD_REQUEST, - apr_pstrcat(p, "URI cannot be parsed: ", url, NULL)); - } - - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: connecting %s to %s:%d", url, uri.hostname, uri.port); - - /* do a DNS lookup for the destination host */ - err = apr_sockaddr_info_get(&uri_addr, uri.hostname, APR_UNSPEC, uri.port, 0, p); - - /* are we connecting directly, or via a proxy? */ - if (proxyname) { - connectname = proxyname; - connectport = proxyport; - err = apr_sockaddr_info_get(&connect_addr, proxyname, APR_UNSPEC, proxyport, 0, p); - } - else { - connectname = uri.hostname; - connectport = uri.port; - connect_addr = uri_addr; - } - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: connecting to remote proxy %s on port %d", connectname, connectport); - - /* check if ProxyBlock directive on this host */ - if (OK != ap_proxy_checkproxyblock(r, conf, uri_addr)) { - return ap_proxyerror(r, HTTP_FORBIDDEN, - "Connect to remote machine blocked"); - } - - /* Check if it is an allowed port */ - if (conf->allowed_connect_ports->nelts == 0) { - /* Default setting if not overridden by AllowCONNECT */ - switch (uri.port) { - case APR_URI_HTTPS_DEFAULT_PORT: - case APR_URI_SNEWS_DEFAULT_PORT: - break; - default: - /* XXX can we call ap_proxyerror() here to get a nice log message? */ - return HTTP_FORBIDDEN; - } - } else if(!allowed_port(conf, uri.port)) { - /* XXX can we call ap_proxyerror() here to get a nice log message? */ - return HTTP_FORBIDDEN; - } - - /* - * Step Two: Make the Connection - * - * We have determined who to connect to. Now make the connection. - */ - - /* get all the possible IP addresses for the destname and loop through them - * until we get a successful connection - */ - if (APR_SUCCESS != err) { - return ap_proxyerror(r, HTTP_BAD_GATEWAY, apr_pstrcat(p, - "DNS lookup failure for: ", - connectname, NULL)); - } - - /* - * At this point we have a list of one or more IP addresses of - * the machine to connect to. If configured, reorder this - * list so that the "best candidate" is first try. "best - * candidate" could mean the least loaded server, the fastest - * responding server, whatever. - * - * For now we do nothing, ie we get DNS round robin. - * XXX FIXME - */ - failed = ap_proxy_connect_to_backend(&sock, "CONNECT", connect_addr, - connectname, conf, r->server, - r->pool); - - /* handle a permanent error from the above loop */ - if (failed) { - if (proxyname) { - return DECLINED; - } - else { - return HTTP_BAD_GATEWAY; - } - } - - /* - * Step Three: Send the Request - * - * Send the HTTP/1.1 CONNECT request to the remote server - */ - - /* we are acting as a tunnel - the output filter stack should - * be completely empty, because when we are done here we are done completely. - * We add the NULL filter to the stack to do this... - */ - r->output_filters = NULL; - r->connection->output_filters = NULL; - - - /* If we are connecting through a remote proxy, we need to pass - * the CONNECT request on to it. - */ - if (proxyport) { - /* FIXME: Error checking ignored. - */ - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: sending the CONNECT request to the remote proxy"); - nbytes = apr_snprintf(buffer, sizeof(buffer), - "CONNECT %s HTTP/1.0" CRLF, r->uri); - apr_send(sock, buffer, &nbytes); - nbytes = apr_snprintf(buffer, sizeof(buffer), - "Proxy-agent: %s" CRLF CRLF, ap_get_server_version()); - apr_send(sock, buffer, &nbytes); - } - else { - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: Returning 200 OK Status"); - nbytes = apr_snprintf(buffer, sizeof(buffer), - "HTTP/1.0 200 Connection Established" CRLF); - ap_xlate_proto_to_ascii(buffer, nbytes); - apr_send(client_socket, buffer, &nbytes); - nbytes = apr_snprintf(buffer, sizeof(buffer), - "Proxy-agent: %s" CRLF CRLF, ap_get_server_version()); - ap_xlate_proto_to_ascii(buffer, nbytes); - apr_send(client_socket, buffer, &nbytes); -#if 0 - /* This is safer code, but it doesn't work yet. I'm leaving it - * here so that I can fix it later. - */ - r->status = HTTP_OK; - r->header_only = 1; - apr_table_set(r->headers_out, "Proxy-agent: %s", ap_get_server_version()); - ap_rflush(r); -#endif - } - - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: setting up poll()"); - - /* - * Step Four: Handle Data Transfer - * - * Handle two way transfer of data over the socket (this is a tunnel). - */ - -/* r->sent_bodyct = 1;*/ - - if((rv = apr_poll_setup(&pollfd, 2, r->pool)) != APR_SUCCESS) - { - apr_socket_close(sock); - ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, - "proxy: CONNECT: error apr_poll_setup()"); - return HTTP_INTERNAL_SERVER_ERROR; - } - - /* Add client side to the poll */ - apr_poll_socket_add(pollfd, client_socket, APR_POLLIN); - - /* Add the server side to the poll */ - apr_poll_socket_add(pollfd, sock, APR_POLLIN); - - while (1) { /* Infinite loop until error (one side closes the connection) */ -/* ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, "proxy: CONNECT: going to sleep (poll)");*/ - if ((rv = apr_poll(pollfd, 2, &pollcnt, -1)) != APR_SUCCESS) - { - apr_socket_close(sock); - ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "proxy: CONNECT: error apr_poll()"); - return HTTP_INTERNAL_SERVER_ERROR; - } -/* ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: woke from select(), i=%d", pollcnt);*/ - - if (pollcnt) { - apr_poll_revents_get(&pollevent, sock, pollfd); - if (pollevent & APR_POLLIN) { -/* ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: sock was set");*/ - nbytes = sizeof(buffer); - if (apr_recv(sock, buffer, &nbytes) == APR_SUCCESS) { - o = 0; - i = nbytes; - while(i > 0) - { - nbytes = i; - /* This is just plain wrong. No module should ever write directly - * to the client. For now, this works, but this is high on my list of - * things to fix. The correct line is: - * if ((nbytes = ap_rwrite(buffer + o, nbytes, r)) < 0) - * rbb - */ - if (apr_send(client_socket, buffer + o, &nbytes) != APR_SUCCESS) - break; - o += nbytes; - i -= nbytes; - } - } - else - break; - } - else if ((pollevent & APR_POLLERR) || (pollevent & APR_POLLHUP)) - break; - - - apr_poll_revents_get(&pollevent, client_socket, pollfd); - if (pollevent & APR_POLLIN) { -/* ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: client was set");*/ - nbytes = sizeof(buffer); - if (apr_recv(client_socket, buffer, &nbytes) == APR_SUCCESS) { - o = 0; - i = nbytes; - while(i > 0) - { - nbytes = i; - if (apr_send(sock, buffer + o, &nbytes) != APR_SUCCESS) - break; - o += nbytes; - i -= nbytes; - } - } - else - break; - } - else if ((pollevent & APR_POLLERR) || (pollevent & APR_POLLHUP)) - break; - } - else - break; - } - - ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server, - "proxy: CONNECT: finished with poll() - cleaning up"); - - /* - * Step Five: Clean Up - * - * Close the socket and clean up - */ - - apr_socket_close(sock); - - return OK; -} - -static void ap_proxy_connect_register_hook(apr_pool_t *p) -{ - proxy_hook_scheme_handler(ap_proxy_connect_handler, NULL, NULL, APR_HOOK_MIDDLE); - proxy_hook_canon_handler(ap_proxy_connect_canon, NULL, NULL, APR_HOOK_MIDDLE); -} - -module AP_MODULE_DECLARE_DATA proxy_connect_module = { - STANDARD20_MODULE_STUFF, - NULL, /* create per-directory config structure */ - NULL, /* merge per-directory config structures */ - NULL, /* create per-server config structure */ - NULL, /* merge per-server config structures */ - NULL, /* command apr_table_t */ - ap_proxy_connect_register_hook /* register hooks */ -}; |