+++ /dev/null
-/* 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.
- */
-
-#include "mod_proxy.h"
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#ifndef CMSG_DATA
-#error This module only works on unix platforms with the correct OS support
-#endif
-
-#include "apr_version.h"
-#if APR_MAJOR_VERSION < 2
-/* for apr_wait_for_io_or_timeout */
-#include "apr_support.h"
-#endif
-
-#include "mod_proxy_fdpass.h"
-
-module AP_MODULE_DECLARE_DATA proxy_fdpass_module;
-
-#define MOP_DEBUG 0
-
-static int proxy_fdpass_canon(request_rec *r, char *url)
-{
- const char *path;
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "proxy_http_canon: start\n");
- write(mop_fd, mop_bf, strlen(mop_bf));
- close(mop_fd);
-
- }
-
- if (strncasecmp(url, "fd://", 5) == 0) {
- url += 5;
- }
- else {
- return DECLINED;
- }
-
- path = ap_server_root_relative(r->pool, url);
-
- r->filename = apr_pstrcat(r->pool, "proxy:fd://", path, NULL);
-
- /* ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
- "proxy: FD: set r->filename to %s", r->filename); */
- return OK;
-}
-
-/* TODO: In APR 2.x: Extend apr_sockaddr_t to possibly be a path !!! */
-static apr_status_t socket_connect_un(request_rec *r, apr_socket_t *sock,
- struct sockaddr_un *sa)
-{
- apr_status_t rv;
- apr_os_sock_t rawsock;
- apr_interval_time_t t;
-
- rv = apr_os_sock_get(&rawsock, sock);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: apr_os_sock_get failed");
- return rv;
- }
-
- rv = apr_socket_timeout_get(sock, &t);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: apr_socket_timeout_get failed");
- return rv;
- }
-
- do {
- /* ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: pre_connect"); */
- rv = connect(rawsock, (struct sockaddr*)sa,
- sizeof(*sa) /* + strlen(sa->sun_path)*/ );
- /* ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: post_connect %d", rv); */
- } while (rv == -1 && errno == EINTR);
-
- if ((rv == -1) && (errno == EINPROGRESS || errno == EALREADY)
- && (t > 0)) {
-#if APR_MAJOR_VERSION < 2
- rv = apr_wait_for_io_or_timeout(NULL, sock, 0);
-#else
- rv = apr_socket_wait(sock, APR_WAIT_WRITE);
-#endif
-
- if (rv != APR_SUCCESS) {
- ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL,
- "proxy: FD: apr_socket_wait failed");
- return rv;
- }
- }
-
- if (rv == -1 && errno != EISCONN) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: socket_connect_un preexit %d", errno);
- return errno;
- }
-
- return APR_SUCCESS;
-}
-
-static apr_status_t get_socket_from_path(request_rec *r, apr_pool_t *p,
- const char* path,
- apr_socket_t **out_sock)
-{
- struct sockaddr_un sa;
- apr_socket_t *s;
- apr_status_t rv;
- *out_sock = NULL;
-
- /*
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: Failed to connect to '%s' %d xxx",
- url, rv);
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: get_socket_from_path::START");
- */
-
- rv = apr_socket_create(&s, AF_UNIX, SOCK_STREAM, 0, p);
-
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: get_socket_from_path::create %d", rv);
- return rv;
- }
-
- sa.sun_family = AF_UNIX;
- apr_cpystrn(sa.sun_path, path, sizeof(sa.sun_path));
-
- rv = socket_connect_un(r, s, &sa);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: get_socket_from_path::connect_un %d", rv);
- return rv;
- }
-
- *out_sock = s;
-
- return APR_SUCCESS;
-}
-
-#define ANCIL_FD_BUFFER(n) \
- struct { \
- struct cmsghdr h; \
- int fd[n]; \
- }
-
-static apr_status_t send_socket(apr_pool_t *p,
- apr_socket_t *s,
- apr_socket_t *outbound,
- apr_socket_t *ctrlsock)
-{
- apr_status_t rv;
- apr_os_sock_t rawsock;
- apr_os_sock_t srawsock;
- apr_os_sock_t sctrlsock;
- struct msghdr msg;
- struct cmsghdr *cmsg;
- struct iovec iov;
- char b = '\0', *buf;
- ANCIL_FD_BUFFER(2) ancil_buf;
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "send_socket: start\n");
- write(mop_fd, mop_bf, strlen(mop_bf));
- close(mop_fd);
- }
-
- rv = apr_os_sock_get(&rawsock, outbound);
- if (rv != APR_SUCCESS) {
- return rv;
- }
-
- rv = apr_os_sock_get(&srawsock, s);
- if (rv != APR_SUCCESS) {
- return rv;
- }
-
- rv = apr_os_sock_get(&sctrlsock, ctrlsock);
- if (rv != APR_SUCCESS) {
- return rv;
- }
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- write(mop_fd, "XX", 2);
- write(mop_fd, &srawsock, sizeof(apr_os_sock_t));
- write(mop_fd, "XX", 2);
- close(mop_fd);
- }
-
- memset(&msg, 0, sizeof(msg));
-
- msg.msg_iov = &iov;
- msg.msg_iovlen = 1;
-
- iov.iov_base = &b;
- iov.iov_len = 1;
-
- msg.msg_control = &ancil_buf;
- msg.msg_controllen = sizeof(struct cmsghdr) + sizeof(rawsock) * 2;
-
- // cmsg = apr_palloc(p, sizeof(*cmsg) + sizeof(rawsock));
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_len = sizeof(*cmsg) + sizeof(rawsock) * 2;
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
-
- ((int *)CMSG_DATA(cmsg))[0] = rawsock;
- ((int *)CMSG_DATA(cmsg))[1] = sctrlsock;
-
- rv = sendmsg(srawsock, &msg, 0);
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "SENT BYTES: %d\n", rv);
- write(mop_fd, mop_bf, strlen(mop_bf));
- close(mop_fd);
- }
-
- if (rv == -1) {
- return errno;
- }
-
-
- return APR_SUCCESS;
-}
-
-static int headers_builder(void *rec, const char *key, const char *value)
-{
- char *s;
-
- s = (char *)rec;
-
- // TODO: verify length
- sprintf(s, "%s%s:%s\n", s, key, value);
-}
-
-#define CTRL_BUFF_MAX_SZ (8*1024)
-
-#define DEFAULT_ENCTYPE "application/x-www-form-urlencoded"
-
-int util_read(request_rec *r, const char **rbuf)
-{
- int rc;
-
- if ((rc = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)) != OK) {
- return rc;
- }
-
- if (ap_should_client_block(r)) {
- char argsbuffer[HUGE_STRING_LEN];
- int rsize, len_read, rpos=0;
- long length = r->remaining;
- *rbuf = (char *)apr_pcalloc(r->pool, length +1);
- if ((len_read = ap_get_client_block(r, argsbuffer,
- sizeof(argsbuffer))) > 0) {
- if ((rpos + len_read) > length) {
- rsize = length - rpos;
- } else {
- rsize = len_read;
- }
-
- memcpy((char *)*rbuf + rpos, argsbuffer, rsize);
- rpos += rsize;
- }
-
- }
-
- return rc;
-}
-
-int read_post(request_rec *r, const char **data)
-{
- const char *type;
- char *p, s_type[256];
- int rc = OK;
-
- s_type[255] = '\0';
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "read_post: start: numb: %d %d head_in: [%s]\n", r->method_number, M_POST, apr_table_get(r->headers_in, "Content-Type"));
- write(mop_fd, mop_bf, strlen(mop_bf));
- close(mop_fd);
- }
-
-
- if (r->method_number != M_POST) {
- return rc;
- }
-
- type = apr_table_get(r->headers_in, "Content-Type");
- strncpy(s_type, type, 255);
- if (p = strchr(s_type, ';')) {
- *p = '\0';
- }
- if (strcasecmp(s_type, DEFAULT_ENCTYPE) != 0) {
- return DECLINED;
- }
-
- if ((rc = util_read(r, data)) != OK) {
- return rc;
- }
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "read_post: finish\n");
- write(mop_fd, mop_bf, strlen(mop_bf));
- close(mop_fd);
- }
-
- return OK;
-}
-
-
-// TODO: sanitize calloc
-static int proxy_fdpass_handler(request_rec *r, proxy_worker *worker,
- proxy_server_conf *conf,
- char *url, const char *proxyname,
- apr_port_t proxyport)
-{
- apr_status_t rv;
- apr_socket_t *sock;
- apr_socket_t *clientsock;
- char *buf;
- char *headers_out = NULL;
- int ctrlrawsock[2];
- apr_socket_t *ctrlsock = NULL, *clientctrlsock = NULL;
- apr_size_t wrlen;
- const char *post_data = NULL;
-
- ap_filter_t *f;
- ap_filter_rec_t *fg;
-
- if (strncasecmp(url, "fd://", 5) == 0) {
- url += 5;
- }
- else {
- return DECLINED;
- }
-
- rv = get_socket_from_path(r, r->pool, url, &sock);
-
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: Failed to connect to '%s' %d xxx",
- url, rv);
- return HTTP_INTERNAL_SERVER_ERROR;
- }
-
- fg = ap_get_output_filter_handle("HTTP_HEADER");
-
- /*
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "proxy: FD: filter fg: %lx func %lx", fg, ap_http_header_filter);
- */
-
- for (f = r->output_filters ; f != NULL ; f = f->next) {
- /* ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "proxy: FD: filter loop: %lx", f->frec);
- */
- if (f->frec == fg) {
- /*
- ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "proxy: FD: filter found, remove it");
- */
- ap_remove_output_filter(f);
- break;
- }
- }
-
- if ((headers_out = calloc(CTRL_BUFF_MAX_SZ, 1)) != NULL) {
- sprintf(headers_out, "The-Request:%s\n", r->the_request);
- apr_table_do(headers_builder, headers_out, r->headers_in, NULL);
- }
- read_post(r, &post_data);
-
- if (MOP_DEBUG == 1) {
- int mop_fd;
- char mop_bf[512];
-
- mop_fd = open("/tmp/apache_mop.log", O_WRONLY | O_APPEND | O_CREAT, 0644);
- sprintf(mop_bf, "proxy_fdpass_handler: start\n");
- write(mop_fd, mop_bf, strlen(mop_bf));
- write(mop_fd, headers_out, strlen(headers_out));
- close(mop_fd);
- }
- /* create a couple of sockets and pass one to the client for headers and so on */
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, ctrlrawsock)) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: Failed create socketpair");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- rv = apr_os_sock_put(&ctrlsock, &(ctrlrawsock[0]), r->connection->pool);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: apr_os_sock_put failed");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- rv = apr_os_sock_put(&clientctrlsock, &(ctrlrawsock[1]), r->connection->pool);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: apr_os_sock_put failed");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
-
- {
- int status;
- /* const char *flush_method = worker->flusher ? worker->flusher : "flush"; */
- const char *flush_method = "flush";
-
- proxy_fdpass_flush *flush = ap_lookup_provider(PROXY_FDPASS_FLUSHER,
- flush_method, "0");
-
- if (!flush) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: Unable to find configured flush "
- "provider '%s'", flush_method);
- return HTTP_INTERNAL_SERVER_ERROR;
- }
-
- status = flush->flusher(r);
- if (status) {
- return status;
- }
- }
-
- /*
- if ((buf = apr_table_get(r->headers_in, "Host"))) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: Host is: [%s]", buf);
- }
- */
-
- /* XXXXX: THIS IS AN EVIL HACK */
- /* There should really be a (documented) public API for this ! */
- clientsock = ap_get_module_config(r->connection->conn_config, &core_module);
-
- rv = send_socket(r->pool, sock, clientsock, clientctrlsock);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: send_socket failed:");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- strcat(headers_out, "\n");
- wrlen = strlen(headers_out);
- rv = apr_socket_send(ctrlsock, headers_out, &wrlen);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: send headers failed");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- if (post_data) {
- wrlen = strlen(post_data);
- rv = apr_socket_send(ctrlsock, post_data, &wrlen);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: send post failed");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- }
- apr_socket_shutdown(ctrlsock, APR_SHUTDOWN_READWRITE);
- if (headers_out)
- free(headers_out);
-
- {
- apr_socket_t *dummy;
- /* Create a dummy unconnected socket, and set it as the one we were
- * connected to, so that when the core closes it, it doesn't close
- * the tcp connection to the client.
- */
- rv = apr_socket_create(&dummy, APR_INET, SOCK_STREAM, APR_PROTO_TCP,
- r->connection->pool);
- if (rv != APR_SUCCESS) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
- "proxy: FD: failed to create dummy socket");
- return HTTP_INTERNAL_SERVER_ERROR;
- }
- ap_set_module_config(r->connection->conn_config, &core_module, dummy);
- }
-
-
- return OK;
-}
-
-static int standard_flush(request_rec *r)
-{
- int status;
- apr_bucket_brigade *bb;
- apr_bucket *e;
- apr_pool_t *p = r->pool;
-
- r->connection->keepalive = AP_CONN_CLOSE;
- /* MOP NOTE: set here the content type */
- // ap_set_content_type(r, apr_pstrdup(p, NO_CONTENT_TYPE));
- bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
- e = apr_bucket_flush_create(r->connection->bucket_alloc);
-
- APR_BRIGADE_INSERT_TAIL(bb, e);
-
- status = ap_pass_brigade(r->output_filters, bb);
-
- if (status != OK) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r,
- "proxy: FD: ap_pass_brigade failed:");
- return status;
- }
-
- return OK;
-}
-
-static const proxy_fdpass_flush builtin_flush =
-{
- "flush",
- &standard_flush,
- NULL
-};
-
-static void ap_proxy_fdpass_register_hooks(apr_pool_t *p)
-{
- ap_register_provider(p, PROXY_FDPASS_FLUSHER, "flush", "0", &builtin_flush);
- proxy_hook_scheme_handler(proxy_fdpass_handler, NULL, NULL, APR_HOOK_FIRST);
- proxy_hook_canon_handler(proxy_fdpass_canon, NULL, NULL, APR_HOOK_FIRST);
-}
-
-module AP_MODULE_DECLARE_DATA proxy_fdpass_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_fdpass_register_hooks /* register hooks */
-};
projects / mod-proxy-fdpass.git / blobdiff