1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "mod_proxy.h"
19 #include <sys/types.h>
20 #include <sys/socket.h>
24 #error This module only works on unix platforms with the correct OS support
27 #include "apr_version.h"
28 #if APR_MAJOR_VERSION < 2
29 /* for apr_wait_for_io_or_timeout */
30 #include "apr_support.h"
33 #include "mod_proxy_fdpass.h"
35 module AP_MODULE_DECLARE_DATA proxy_fdpass_module;
37 static int proxy_fdpass_canon(request_rec *r, char *url)
45 mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT);
46 sprintf(mop_bf, "proxy_http_canon: start\n");
47 write(mop_fd, mop_bf, strlen(mop_bf));
52 if (strncasecmp(url, "fd://", 5) == 0) {
59 path = ap_server_root_relative(r->pool, url);
61 r->filename = apr_pstrcat(r->pool, "proxy:fd://", path, NULL);
63 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
64 "proxy: FD: set r->filename to %s", r->filename);
68 /* TODO: In APR 2.x: Extend apr_sockaddr_t to possibly be a path !!! */
69 static apr_status_t socket_connect_un(request_rec *r, apr_socket_t *sock,
70 struct sockaddr_un *sa)
73 apr_os_sock_t rawsock;
74 apr_interval_time_t t;
76 rv = apr_os_sock_get(&rawsock, sock);
77 if (rv != APR_SUCCESS) {
78 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
79 "proxy: FD: apr_os_sock_get failed");
83 rv = apr_socket_timeout_get(sock, &t);
84 if (rv != APR_SUCCESS) {
85 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
86 "proxy: FD: apr_socket_timeout_get failed");
91 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
92 "proxy: FD: pre_connect");
93 rv = connect(rawsock, (struct sockaddr*)sa,
94 sizeof(*sa) /* + strlen(sa->sun_path)*/ );
95 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
96 "proxy: FD: post_connect %d", rv);
97 } while (rv == -1 && errno == EINTR);
99 if ((rv == -1) && (errno == EINPROGRESS || errno == EALREADY)
101 #if APR_MAJOR_VERSION < 2
102 rv = apr_wait_for_io_or_timeout(NULL, sock, 0);
104 rv = apr_socket_wait(sock, APR_WAIT_WRITE);
107 if (rv != APR_SUCCESS) {
108 ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL,
109 "proxy: FD: apr_socket_wait failed");
114 if (rv == -1 && errno != EISCONN) {
115 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
116 "proxy: FD: socket_connect_un preexit %d", errno);
123 static apr_status_t get_socket_from_path(request_rec *r, apr_pool_t *p,
125 apr_socket_t **out_sock)
127 struct sockaddr_un sa;
133 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
134 "proxy: FD: Failed to connect to '%s' %d xxx",
137 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
138 "proxy: FD: get_socket_from_path::START");
140 rv = apr_socket_create(&s, AF_UNIX, SOCK_STREAM, 0, p);
142 if (rv != APR_SUCCESS) {
143 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
144 "proxy: FD: get_socket_from_path::create %d", rv);
148 sa.sun_family = AF_UNIX;
149 apr_cpystrn(sa.sun_path, path, sizeof(sa.sun_path));
151 rv = socket_connect_un(r, s, &sa);
152 if (rv != APR_SUCCESS) {
153 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
154 "proxy: FD: get_socket_from_path::connect_un %d", rv);
163 #define ANCIL_FD_BUFFER(n) \
169 static apr_status_t send_socket(apr_pool_t *p,
171 apr_socket_t *outbound,
172 apr_socket_t *ctrlsock)
175 apr_os_sock_t rawsock;
176 apr_os_sock_t srawsock;
177 apr_os_sock_t sctrlsock;
179 struct cmsghdr *cmsg;
182 ANCIL_FD_BUFFER(2) ancil_buf;
188 mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
189 sprintf(mop_bf, "send_socket: start\n");
190 write(mop_fd, mop_bf, strlen(mop_bf));
195 rv = apr_os_sock_get(&rawsock, outbound);
196 if (rv != APR_SUCCESS) {
200 rv = apr_os_sock_get(&srawsock, s);
201 if (rv != APR_SUCCESS) {
205 rv = apr_os_sock_get(&sctrlsock, ctrlsock);
206 if (rv != APR_SUCCESS) {
214 mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
215 write(mop_fd, "XX", 2);
216 write(mop_fd, &srawsock, sizeof(apr_os_sock_t));
217 write(mop_fd, "XX", 2);
222 memset(&msg, 0, sizeof(msg));
230 msg.msg_control = &ancil_buf;
231 msg.msg_controllen = sizeof(struct cmsghdr) + sizeof(rawsock) * 2;
233 // cmsg = apr_palloc(p, sizeof(*cmsg) + sizeof(rawsock));
234 cmsg = CMSG_FIRSTHDR(&msg);
235 cmsg->cmsg_len = sizeof(*cmsg) + sizeof(rawsock) * 2;
236 cmsg->cmsg_level = SOL_SOCKET;
237 cmsg->cmsg_type = SCM_RIGHTS;
239 ((int *)CMSG_DATA(cmsg))[0] = rawsock;
240 ((int *)CMSG_DATA(cmsg))[1] = sctrlsock;
242 rv = sendmsg(srawsock, &msg, 0);
248 mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
249 sprintf(mop_bf, "SENT BYTES: %d\n", rv);
250 write(mop_fd, mop_bf, strlen(mop_bf));
263 static int headers_builder(void *rec, const char *key, const char *value)
269 // TODO: verify length
270 sprintf(s, "%s%s:%s\n", s, key, value);
273 #define CTRL_BUFF_MAX_SZ (8*1024)
275 #define DEFAULT_ENCTYPE "application/x-www-form-urlencoded"
277 int util_read(request_rec *r, const char **rbuf)
281 if ((rc = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)) != OK) {
285 if (ap_should_client_block(r)) {
286 char argsbuffer[HUGE_STRING_LEN];
287 int rsize, len_read, rpos=0;
288 long length = r->remaining;
289 *rbuf = (char *)apr_pcalloc(r->pool, length +1);
291 while ((len_read = ap_get_client_block(r, argsbuffer,
292 sizeof(argsbuffer))) > 0) {
293 if ((rpos + len_read) > length) {
294 rsize = length - rpos;
299 memcpy((char *)*rbuf + rpos, argsbuffer, rsize);
308 int read_post(request_rec *r, const char **data)
313 if (r->method_number != M_POST) {
317 type = apr_table_get(r->headers_in, "Content-Type");
318 if (strcasecmp(type, DEFAULT_ENCTYPE) != 0) {
322 if ((rc = util_read(r, data)) != OK) {
330 // TODO: sanitize calloc
331 static int proxy_fdpass_handler(request_rec *r, proxy_worker *worker,
332 proxy_server_conf *conf,
333 char *url, const char *proxyname,
334 apr_port_t proxyport)
338 apr_socket_t *clientsock;
340 char *headers_out = NULL;
342 apr_socket_t *ctrlsock = NULL, *clientctrlsock = NULL;
344 const char *post_data = NULL;
349 fg = ap_get_output_filter_handle("HTTP_HEADER");
352 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
353 "proxy: FD: filter fg: %lx func %lx", fg, ap_http_header_filter);
356 for (f = r->output_filters ; f != NULL ; f = f->next) {
357 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
358 "proxy: FD: filter loop: %lx", f->frec);
360 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
361 "proxy: FD: filter found, remove it");
362 ap_remove_output_filter(f);
368 ap_custom_response(r, 0, "sappo: robiola zero");
369 ap_custom_response(r, 200, "sappo: robiola");
370 apr_table_clear(r->headers_out);
373 if ((headers_out = calloc(CTRL_BUFF_MAX_SZ, 1)) != NULL) {
374 sprintf(headers_out, "The-Request:%s\n", r->the_request);
375 apr_table_do(headers_builder, headers_out, r->headers_in, NULL);
377 read_post(r, &post_data);
383 mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
384 sprintf(mop_bf, "proxy_fdpass_handler: start\n");
385 write(mop_fd, mop_bf, strlen(mop_bf));
386 write(mop_fd, headers_out, strlen(headers_out));
390 if (strncasecmp(url, "fd://", 5) == 0) {
397 rv = get_socket_from_path(r, r->pool, url, &sock);
399 if (rv != APR_SUCCESS) {
400 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
401 "proxy: FD: Failed to connect to '%s' %d xxx",
403 return HTTP_INTERNAL_SERVER_ERROR;
406 /* create a couple of sockets and pass one to the client for headers and so on */
407 if (socketpair(AF_UNIX, SOCK_STREAM, 0, ctrlrawsock)) {
408 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
409 "proxy: FD: Failed create socketpair");
410 return HTTP_INTERNAL_SERVER_ERROR;
412 rv = apr_os_sock_put(&ctrlsock, &(ctrlrawsock[0]), r->connection->pool);
413 if (rv != APR_SUCCESS) {
414 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
415 "proxy: FD: apr_os_sock_put failed");
416 return HTTP_INTERNAL_SERVER_ERROR;
418 rv = apr_os_sock_put(&clientctrlsock, &(ctrlrawsock[1]), r->connection->pool);
419 if (rv != APR_SUCCESS) {
420 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
421 "proxy: FD: apr_os_sock_put failed");
422 return HTTP_INTERNAL_SERVER_ERROR;
427 /* const char *flush_method = worker->flusher ? worker->flusher : "flush"; */
428 const char *flush_method = "flush";
430 proxy_fdpass_flush *flush = ap_lookup_provider(PROXY_FDPASS_FLUSHER,
434 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
435 "proxy: FD: Unable to find configured flush "
436 "provider '%s'", flush_method);
437 return HTTP_INTERNAL_SERVER_ERROR;
440 status = flush->flusher(r);
446 if ((buf = apr_table_get(r->headers_in, "Host"))) {
447 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
448 "proxy: FD: Host is: [%s]", buf);
451 /* XXXXX: THIS IS AN EVIL HACK */
452 /* There should really be a (documented) public API for this ! */
453 clientsock = ap_get_module_config(r->connection->conn_config, &core_module);
455 rv = send_socket(r->pool, sock, clientsock, clientctrlsock);
456 if (rv != APR_SUCCESS) {
457 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
458 "proxy: FD: send_socket failed:");
459 return HTTP_INTERNAL_SERVER_ERROR;
461 strcat(headers_out, "\n");
462 wrlen = strlen(headers_out);
463 rv = apr_socket_send(ctrlsock, headers_out, &wrlen);
464 if (rv != APR_SUCCESS) {
465 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
466 "proxy: FD: send headers failed");
467 return HTTP_INTERNAL_SERVER_ERROR;
470 wrlen = strlen(post_data);
471 rv = apr_socket_send(ctrlsock, post_data, &wrlen);
472 if (rv != APR_SUCCESS) {
473 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
474 "proxy: FD: send post failed");
475 return HTTP_INTERNAL_SERVER_ERROR;
478 apr_socket_shutdown(ctrlsock, APR_SHUTDOWN_READWRITE);
484 /* Create a dummy unconnected socket, and set it as the one we were
485 * connected to, so that when the core closes it, it doesn't close
486 * the tcp connection to the client.
488 rv = apr_socket_create(&dummy, APR_INET, SOCK_STREAM, APR_PROTO_TCP,
489 r->connection->pool);
490 if (rv != APR_SUCCESS) {
491 ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
492 "proxy: FD: failed to create dummy socket");
493 return HTTP_INTERNAL_SERVER_ERROR;
495 ap_set_module_config(r->connection->conn_config, &core_module, dummy);
502 static int standard_flush(request_rec *r)
505 apr_bucket_brigade *bb;
507 apr_pool_t *p = r->pool;
509 r->connection->keepalive = AP_CONN_CLOSE;
510 /* MOP NOTE: set here the content type */
511 // ap_set_content_type(r, apr_pstrdup(p, NO_CONTENT_TYPE));
512 bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
513 e = apr_bucket_flush_create(r->connection->bucket_alloc);
515 APR_BRIGADE_INSERT_TAIL(bb, e);
517 status = ap_pass_brigade(r->output_filters, bb);
520 ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r,
521 "proxy: FD: ap_pass_brigade failed:");
528 static const proxy_fdpass_flush builtin_flush =
536 static int proxy_fdpass_post_request(proxy_worker *worker,
537 proxy_balancer *balancer,
539 proxy_server_conf *conf)
541 apr_table_clear(r->headers_out);
542 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
548 static void ap_proxy_fdpass_register_hooks(apr_pool_t *p)
550 ap_register_provider(p, PROXY_FDPASS_FLUSHER, "flush", "0", &builtin_flush);
551 // proxy_hook_post_request(proxy_fdpass_post_request, NULL, NULL, APR_HOOK_FIRST);
552 proxy_hook_scheme_handler(proxy_fdpass_handler, NULL, NULL, APR_HOOK_FIRST);
553 proxy_hook_canon_handler(proxy_fdpass_canon, NULL, NULL, APR_HOOK_FIRST);
556 module AP_MODULE_DECLARE_DATA proxy_fdpass_module = {
557 STANDARD20_MODULE_STUFF,
558 NULL, /* create per-directory config structure */
559 NULL, /* merge per-directory config structures */
560 NULL, /* create per-server config structure */
561 NULL, /* merge per-server config structures */
562 NULL, /* command apr_table_t */
563 ap_proxy_fdpass_register_hooks /* register hooks */