+++ /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 "apr_network_io.h"
-#include "apr_strings.h"
-
-#define APR_WANT_STRFUNC
-#include "apr_want.h"
-
-#define CORE_PRIVATE
-#include "ap_config.h"
-#include "httpd.h"
-#include "http_config.h"
-#include "ap_listen.h"
-#include "http_log.h"
-#include "mpm.h"
-#include "mpm_common.h"
-
-ap_listen_rec *ap_listeners = NULL;
-
-#if APR_HAVE_IPV6
-static int default_family = APR_UNSPEC;
-#else
-static int default_family = APR_INET;
-#endif
-
-static ap_listen_rec *old_listeners;
-static int ap_listenbacklog;
-static int send_buffer_size;
-static int receive_buffer_size;
-
-/* TODO: make_sock is just begging and screaming for APR abstraction */
-static apr_status_t make_sock(apr_pool_t *p, ap_listen_rec *server)
-{
- apr_socket_t *s = server->sd;
- int one = 1;
-#if APR_HAVE_IPV6
-#ifdef AP_ENABLE_V4_MAPPED
- int v6only_setting = 0;
-#else
- int v6only_setting = 1;
-#endif
-#endif
- apr_status_t stat;
-
-#ifndef WIN32
- stat = apr_socket_opt_set(s, APR_SO_REUSEADDR, one);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p,
- "make_sock: for address %pI, apr_socket_opt_set: (SO_REUSEADDR)",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
-#endif
-
- stat = apr_socket_opt_set(s, APR_SO_KEEPALIVE, one);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p,
- "make_sock: for address %pI, apr_socket_opt_set: (SO_KEEPALIVE)",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
-
-#if APR_HAVE_IPV6
- if (server->bind_addr->family == APR_INET6) {
- stat = apr_socket_opt_set(s, APR_IPV6_V6ONLY, v6only_setting);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p,
- "make_sock: for address %pI, apr_socket_opt_set: "
- "(IPV6_V6ONLY)",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
- }
-#endif
-
- /*
- * To send data over high bandwidth-delay connections at full
- * speed we must force the TCP window to open wide enough to keep the
- * pipe full. The default window size on many systems
- * is only 4kB. Cross-country WAN connections of 100ms
- * at 1Mb/s are not impossible for well connected sites.
- * If we assume 100ms cross-country latency,
- * a 4kB buffer limits throughput to 40kB/s.
- *
- * To avoid this problem I've added the SendBufferSize directive
- * to allow the web master to configure send buffer size.
- *
- * The trade-off of larger buffers is that more kernel memory
- * is consumed. YMMV, know your customers and your network!
- *
- * -John Heidemann <johnh@isi.edu> 25-Oct-96
- *
- * If no size is specified, use the kernel default.
- */
- if (send_buffer_size) {
- stat = apr_socket_opt_set(s, APR_SO_SNDBUF, send_buffer_size);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_WARNING, stat, p,
- "make_sock: failed to set SendBufferSize for "
- "address %pI, using default",
- server->bind_addr);
- /* not a fatal error */
- }
- }
- if (receive_buffer_size) {
- stat = apr_socket_opt_set(s, APR_SO_RCVBUF, receive_buffer_size);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_WARNING, stat, p,
- "make_sock: failed to set ReceiveBufferSize for "
- "address %pI, using default",
- server->bind_addr);
- /* not a fatal error */
- }
- }
-
-#if APR_TCP_NODELAY_INHERITED
- ap_sock_disable_nagle(s);
-#endif
-
- if ((stat = apr_bind(s, server->bind_addr)) != APR_SUCCESS) {
- ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, stat, p,
- "make_sock: could not bind to address %pI",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
-
- if ((stat = apr_listen(s, ap_listenbacklog)) != APR_SUCCESS) {
- ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_ERR, stat, p,
- "make_sock: unable to listen for connections "
- "on address %pI",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
-
-#ifdef WIN32
- /* I seriously doubt that this would work on Unix; I have doubts that
- * it entirely solves the problem on Win32. However, since setting
- * reuseaddr on the listener -prior- to binding the socket has allowed
- * us to attach to the same port as an already running instance of
- * Apache, or even another web server, we cannot identify that this
- * port was exclusively granted to this instance of Apache.
- *
- * So set reuseaddr, but do not attempt to do so until we have the
- * parent listeners successfully bound.
- */
- stat = apr_socket_opt_set(s, APR_SO_REUSEADDR, one);
- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p,
- "make_sock: for address %pI, apr_socket_opt_set: (SO_REUSEADDR)",
- server->bind_addr);
- apr_socket_close(s);
- return stat;
- }
-#endif
-
-#if APR_HAS_SO_ACCEPTFILTER
-#ifndef ACCEPT_FILTER_NAME
-#define ACCEPT_FILTER_NAME "httpready"
-#ifdef __FreeBSD_version
-#if __FreeBSD_version < 411000 /* httpready was broken before 4.1.1 */
-#undef ACCEPT_FILTER_NAME
-#define ACCEPT_FILTER_NAME "dataready"
-#endif
-#endif
-#endif
- apr_socket_accept_filter(s, ACCEPT_FILTER_NAME, "");
-#endif
-
- server->sd = s;
- server->active = 1;
-
-#ifdef MPM_ACCEPT_FUNC
- server->accept_func = MPM_ACCEPT_FUNC;
-#else
- server->accept_func = NULL;
-#endif
-
- return APR_SUCCESS;
-}
-
-static apr_status_t close_listeners_on_exec(void *v)
-{
- ap_listen_rec *lr;
-
- for (lr = ap_listeners; lr; lr = lr->next) {
- apr_socket_close(lr->sd);
- lr->active = 0;
- }
-
- return APR_SUCCESS;
-}
-
-
-static void find_default_family(apr_pool_t *p)
-{
-#if APR_HAVE_IPV6
- /* We know the platform supports IPv6, but this particular
- * system may not have IPv6 enabled. See if we can get an
- * AF_INET6 socket and bind to an ephemeral port. (On most
- * systems, getting an AF_INET6 socket is a sufficient test.
- * On certain levels of OpenUNIX, getting the socket is
- * successful but bind always returns ENETUNREACH.)
- */
- if (default_family == APR_UNSPEC) {
- apr_status_t sock_rv;
- apr_socket_t *tmp_sock;
- apr_sockaddr_t *sa;
-
- if ((sock_rv = apr_socket_create(&tmp_sock, APR_INET6, SOCK_STREAM, p))
- == APR_SUCCESS &&
- apr_sockaddr_info_get(&sa, NULL, APR_INET6, 0, 0, p) == APR_SUCCESS &&
- apr_bind(tmp_sock, sa) == APR_SUCCESS) {
- default_family = APR_INET6;
- }
- else {
- default_family = APR_INET;
- }
- if (sock_rv == APR_SUCCESS) {
- apr_socket_close(tmp_sock);
- }
- }
-#endif
-}
-
-
-static const char *alloc_listener(process_rec *process, char *addr, apr_port_t port)
-{
- ap_listen_rec **walk;
- ap_listen_rec *new;
- apr_status_t status;
- apr_port_t oldport;
- apr_sockaddr_t *sa;
-
- if (!addr) { /* don't bind to specific interface */
- find_default_family(process->pool);
- switch(default_family) {
- case APR_INET:
- addr = "0.0.0.0";
- break;
-
-#if APR_HAVE_IPV6
- case APR_INET6:
- addr = "::";
- break;
-#endif
-
- default:
- ap_assert(1 != 1); /* should not occur */
- }
- }
-
- /* see if we've got an old listener for this address:port */
- for (walk = &old_listeners; *walk; walk = &(*walk)->next) {
- sa = (*walk)->bind_addr;
- /* Some listeners are not real so they will not have a bind_addr. */
- if (sa) {
- apr_sockaddr_port_get(&oldport, sa);
- if (!strcmp(sa->hostname, addr) && port == oldport) {
- /* re-use existing record */
- new = *walk;
- *walk = new->next;
- new->next = ap_listeners;
- ap_listeners = new;
- return NULL;
- }
- }
- }
-
- /* this has to survive restarts */
- new = apr_palloc(process->pool, sizeof(ap_listen_rec));
- new->active = 0;
- if ((status = apr_sockaddr_info_get(&new->bind_addr, addr, APR_UNSPEC,
- port, 0, process->pool))
- != APR_SUCCESS) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, status, process->pool,
- "alloc_listener: failed to set up sockaddr for %s",
- addr);
- return "Listen setup failed";
- }
- if ((status = apr_socket_create(&new->sd,
- new->bind_addr->family,
- SOCK_STREAM, process->pool))
- != APR_SUCCESS) {
- ap_log_perror(APLOG_MARK, APLOG_CRIT, status, process->pool,
- "alloc_listener: failed to get a socket for %s", addr);
- return "Listen setup failed";
- }
-
- new->next = ap_listeners;
- ap_listeners = new;
- return NULL;
-}
-
-static int ap_listen_open(apr_pool_t *pool, apr_port_t port)
-{
- ap_listen_rec *lr;
- ap_listen_rec *next;
- int num_open;
- const char *userdata_key = "ap_listen_open";
- void *data;
-
- /* Don't allocate a default listener. If we need to listen to a
- * port, then the user needs to have a Listen directive in their
- * config file.
- */
- num_open = 0;
- for (lr = ap_listeners; lr; lr = lr->next) {
- if (lr->active) {
- ++num_open;
- }
- else {
- if (make_sock(pool, lr) == APR_SUCCESS) {
- ++num_open;
- lr->active = 1;
- }
- else {
- /* fatal error */
- return -1;
- }
- }
- }
-
- /* close the old listeners */
- for (lr = old_listeners; lr; lr = next) {
- apr_socket_close(lr->sd);
- lr->active = 0;
- next = lr->next;
- }
- old_listeners = NULL;
-
-#if AP_NONBLOCK_WHEN_MULTI_LISTEN
- /* if multiple listening sockets, make them non-blocking so that
- * if select()/poll() reports readability for a reset connection that
- * is already forgotten about by the time we call accept, we won't
- * be hung until another connection arrives on that port
- */
- if (ap_listeners && ap_listeners->next) {
- for (lr = ap_listeners; lr; lr = lr->next) {
- apr_status_t status;
-
- status = apr_socket_opt_set(lr->sd, APR_SO_NONBLOCK, 1);
- if (status != APR_SUCCESS) {
- ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_ERR, status, pool,
- "ap_listen_open: unable to make socket non-blocking");
- return -1;
- }
- }
- }
-#endif /* AP_NONBLOCK_WHEN_MULTI_LISTEN */
-
- /* we come through here on both passes of the open logs phase
- * only register the cleanup once... otherwise we try to close
- * listening sockets twice when cleaning up prior to exec
- */
- apr_pool_userdata_get(&data, userdata_key, pool);
- if (!data) {
- apr_pool_userdata_set((const void *)1, userdata_key,
- apr_pool_cleanup_null, pool);
- apr_pool_cleanup_register(pool, NULL, apr_pool_cleanup_null,
- close_listeners_on_exec);
- }
-
- return num_open ? 0 : -1;
-}
-
-int ap_setup_listeners(server_rec *s)
-{
- ap_listen_rec *lr;
- int num_listeners = 0;
-
- if (ap_listen_open(s->process->pool, s->port)) {
- return 0;
- }
-
- for (lr = ap_listeners; lr; lr = lr->next) {
- num_listeners++;
- }
-
- return num_listeners;
-}
-
-void ap_listen_pre_config(void)
-{
- old_listeners = ap_listeners;
- ap_listeners = NULL;
- ap_listenbacklog = DEFAULT_LISTENBACKLOG;
-}
-
-
-const char *ap_set_listener(cmd_parms *cmd, void *dummy, const char *ips)
-{
- char *host, *scope_id;
- apr_port_t port;
- apr_status_t rv;
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
-
- if (err != NULL) {
- return err;
- }
-
- rv = apr_parse_addr_port(&host, &scope_id, &port, ips, cmd->pool);
- if (rv != APR_SUCCESS) {
- return "Invalid address or port";
- }
-
- if (host && !strcmp(host, "*")) {
- host = NULL;
- }
-
- if (scope_id) {
- /* XXX scope id support is useful with link-local IPv6 addresses */
- return "Scope id is not supported";
- }
-
- if (!port) {
- return "Port must be specified";
- }
-
- return alloc_listener(cmd->server->process, host, port);
-}
-
-const char *ap_set_listenbacklog(cmd_parms *cmd, void *dummy, const char *arg)
-{
- int b;
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
-
- if (err != NULL) {
- return err;
- }
-
- b = atoi(arg);
- if (b < 1) {
- return "ListenBacklog must be > 0";
- }
-
- ap_listenbacklog = b;
- return NULL;
-}
-
-const char *ap_set_send_buffer_size(cmd_parms *cmd, void *dummy,
- const char *arg)
-{
- int s = atoi(arg);
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
-
- if (err != NULL) {
- return err;
- }
-
- if (s < 512 && s != 0) {
- return "SendBufferSize must be >= 512 bytes, or 0 for system default.";
- }
-
- send_buffer_size = s;
- return NULL;
-}
-
-AP_DECLARE_NONSTD(const char *) ap_set_receive_buffer_size(cmd_parms *cmd,
- void *dummy,
- const char *arg)
-{
- int s = atoi(arg);
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
-
- if (err != NULL) {
- return err;
- }
-
- if (s < 512 && s != 0) {
- return "ReceiveBufferSize must be >= 512 bytes, or 0 for system default.";
- }
-
- receive_buffer_size = s;
- return NULL;
-}
Code Review / bottlenecks.git / blobdiff