#include "http_connection.h"
#include "ap_mpm.h"
#include "unixd.h"
+#include "iol_socket.h"
+#include "ap_listen.h"
#include "scoreboard.h"
+#include "acceptlock.h"
#include "http_accept.h"
#include <netinet/tcp.h>
* Actual definitions of config globals
*/
-static int ap_threads_per_child=0; /* Worker threads per child */
-static int ap_acceptors_per_child=0; /* Accept threads per child */
-static int ap_max_requests_per_child=0;
+int ap_threads_per_child=0; /* Worker threads per child */
+int ap_acceptors_per_child=0; /* Accept threads per child */
+int ap_max_requests_per_child=0;
static char *ap_pid_fname=NULL;
static char *ap_scoreboard_fname=NULL;
-static char *ap_lock_fname;
-static struct in_addr ap_bind_address; /* ZZZZZ Abstract out the in_addr */
static int ap_daemons_to_start=0;
static int ap_daemons_min_free=0;
static int ap_daemons_max_free=0;
static int ap_daemons_limit=0;
static time_t ap_restart_time=0;
-static int ap_listenbacklog;
API_VAR_EXPORT int ap_extended_status = 0;
*/
static int max_daemons_limit = -1;
-/*
- * During config time, listeners is treated as a NULL-terminated list.
- * ;child_main previously would start at the beginning of the list each time
- * through the loop, so a socket early on in the list could easily starve out
- * sockets later on in the list. The solution is to start at the listener
- * after the last one processed. But to do that fast/easily in child_main it's
- * way more convenient for listeners to be a ring that loops back on itself.
- * The routine setup_listeners() is called after config time to both open up
- * the sockets and to turn the NULL-terminated list into a ring that loops back
- * on itself.
- *
- * head_listener is used by each child to keep track of what they consider
- * to be the "start" of the ring. It is also set by make_child to ensure
- * that new children also don't starve any sockets.
- *
- * Note that listeners != NULL is ensured by read_config().
- */
-listen_rec *ap_listeners;
-
static char ap_coredump_dir[MAX_STRING_LEN];
int ap_pipe_of_death[2];
#endif
}
+
+static int setup_listeners(pool *pconf, server_rec *s)
+{
+ ap_listen_rec *lr;
+ int num_listeners = 0;
+
+ if (ap_listen_open(pconf, s->port)) {
+ return 0;
+ }
+ for (lr = ap_listeners; lr; lr = lr->next) {
+ num_listeners++;
+ }
+ return num_listeners;
+}
/*****************************************************************
* Here follows a long bunch of generic server bookkeeping stuff...
#define sock_disable_nagle(s) /* NOOP */
#endif
-
-static int make_sock(pool *p, const struct sockaddr_in *server)
- /* abstract sockaddr_in */
-{
- int s;
- int one = 1;
- char addr[512];
-
- if (server->sin_addr.s_addr != htonl(INADDR_ANY))
- ap_snprintf(addr, sizeof(addr), "address %s port %d",
- inet_ntoa(server->sin_addr), ntohs(server->sin_port));
- else
- ap_snprintf(addr, sizeof(addr), "port %d", ntohs(server->sin_port));
-
- /* note that because we're about to slack we don't use psocket */
- if ((s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1) {
- ap_log_error(APLOG_MARK, APLOG_CRIT, server_conf,
- "make_sock: failed to get a socket for %s", addr);
- printf("make_sock: failed to get socket for %s\n", addr);
- exit(1);
- }
-
- /* Solaris (probably versions 2.4, 2.5, and 2.5.1 with various levels
- * of tcp patches) has some really weird bugs where if you dup the
- * socket now it breaks things across SIGHUP restarts. It'll either
- * be unable to bind, or it won't respond.
- */
-#if defined (SOLARIS2) && SOLARIS2 < 260
-#define WORKAROUND_SOLARIS_BUG
-#endif
-
- /* PR#1282 Unixware 1.x appears to have the same problem as solaris */
-#if defined (UW) && UW < 200
-#define WORKAROUND_SOLARIS_BUG
-#endif
-
- /* PR#1973 NCR SVR4 systems appear to have the same problem */
-#if defined (MPRAS)
-#define WORKAROUND_SOLARIS_BUG
-#endif
-
-#ifndef WORKAROUND_SOLARIS_BUG
- s = ap_slack(s, AP_SLACK_HIGH);
-
- ap_note_cleanups_for_socket(p, s); /* arrange to close on exec or restart */
-#endif
-
-#ifndef MPE
-/* MPE does not support SO_REUSEADDR and SO_KEEPALIVE */
-#ifndef _OSD_POSIX
- if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *) &one, sizeof(int)) < 0) {
- ap_log_error(APLOG_MARK, APLOG_CRIT, server_conf,
- "make_sock: for %s, setsockopt: (SO_REUSEADDR)", addr);
- printf("make_sock: failed to setsockopt for %s\n", addr);
- close(s);
- return 0;
- }
-#endif /*_OSD_POSIX*/
- one = 1;
-#ifndef BEOS
-/* BeOS does not support SO_KEEPALIVE */
- if (setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *) &one, sizeof(int)) < 0) {
- ap_log_error(APLOG_MARK, APLOG_CRIT, server_conf,
- "make_sock: for %s, setsockopt: (SO_KEEPALIVE)", addr);
- close(s);
- return 0;
- }
-#endif
-#endif
-
- sock_disable_nagle(s);
-/* sock_enable_linger(s); XXX - Need to reenable? - Manoj */
-
-
-
- /*
- * 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.
- */
-#ifndef BEOS /* BeOS does not support SO_SNDBUF */
- if (server_conf->send_buffer_size) {
- if (setsockopt(s, SOL_SOCKET, SO_SNDBUF,
- (char *) &server_conf->send_buffer_size, sizeof(int)) < 0) {
- ap_log_error(APLOG_MARK, APLOG_WARNING, server_conf,
- "make_sock: failed to set SendBufferSize for %s, "
- "using default", addr);
- /* not a fatal error */
- }
- }
-#endif
-
-#ifdef MPE
-/* MPE requires CAP=PM and GETPRIVMODE to bind to ports less than 1024 */
- if (ntohs(server->sin_port) < 1024)
- GETPRIVMODE();
-#endif
- if (bind(s, (struct sockaddr *) server, sizeof(struct sockaddr_in)) == -1) {
- ap_log_error(APLOG_MARK, APLOG_CRIT, server_conf,
- "make_sock: could not bind to %s", addr);
-#ifdef MPE
- if (ntohs(server->sin_port) < 1024)
- GETUSERMODE();
-#endif
- close(s);
- exit(1);
- }
-#ifdef MPE
- if (ntohs(server->sin_port) < 1024)
- GETUSERMODE();
-#endif
-
- if (listen(s, ap_listenbacklog) == -1) {
- ap_log_error(APLOG_MARK, APLOG_ERR, server_conf,
- "make_sock: unable to listen for connections on %s", addr);
- close(s);
- exit(1);
- }
-
-#ifdef WORKAROUND_SOLARIS_BUG
- s = ap_slack(s, AP_SLACK_HIGH);
-
- ap_note_cleanups_for_socket(p, s); /* arrange to close on exec or restart */
-#endif
-
-#ifdef CHECK_FD_SETSIZE
- /* protect various fd_sets */
- if (s >= FD_SETSIZE) {
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, NULL,
- "make_sock: problem listening on %s, filedescriptor (%u) "
- "larger than FD_SETSIZE (%u) "
- "found, you probably need to rebuild Apache with a "
- "larger FD_SETSIZE", addr, s, FD_SETSIZE);
- close(s);
- return 0;
- }
-#endif
-
- return s;
-}
-
-
-/*
- * During a restart we keep track of the old listeners here, so that we
- * can re-use the sockets. We have to do this because we won't be able
- * to re-open the sockets ("Address already in use").
- *
- * Unlike the listeners ring, old_listeners is a NULL terminated list.
- *
- * copy_listeners() makes the copy, find_listener() finds an old listener
- * and close_unused_listener() cleans up whatever wasn't used.
- */
-static listen_rec *old_listeners;
-
-/* unfortunately copy_listeners may be called before listeners is a ring */
-static void copy_listeners(pool *p)
-{
- listen_rec *lr;
-
- ap_assert(old_listeners == NULL);
- if (ap_listeners == NULL) {
- return;
- }
- lr = ap_listeners;
- do {
- listen_rec *nr = malloc(sizeof *nr);
- if (nr == NULL) {
- fprintf(stderr, "Ouch! malloc failed in copy_listeners()\n");
- exit(1);
- }
- *nr = *lr;
- ap_kill_cleanups_for_socket(p, nr->fd);
- nr->next = old_listeners;
- old_listeners = nr;
- lr = lr->next;
- } while (lr && lr != ap_listeners);
-}
-
-
-static int find_listener(listen_rec *lr)
-{
- listen_rec *or;
- for (or = old_listeners; or; or = or->next) {
- if (!memcmp(&or->local_addr, &lr->local_addr, sizeof(or->local_addr))) {
- or->used = 1;
- return or->fd;
- }
- }
- return -1;
-}
-
-
-static void close_unused_listeners(void)
-{
- listen_rec *or, *next;
-
- for (or = old_listeners; or; or = next) {
- next = or->next;
- if (!or->used)
- closesocket(or->fd);
- free(or);
- }
- old_listeners = NULL;
-}
-
-
-/* open sockets, and turn the listeners list into a singly linked ring */
-static int setup_listeners(pool *p)
-{
- listen_rec *lr;
- int fd;
- int listener_count = 0;
-
- lr = ap_listeners;
- for (;;) {
- fd = find_listener(lr);
- if (fd < 0) {
- fd = make_sock(p, &lr->local_addr);
- }
- else {
- ap_note_cleanups_for_socket(p, fd);
- }
- if (fd >= 0) {
- ++listener_count;
- }
- lr->fd = fd;
- if (lr->next == NULL)
- break;
- lr = lr->next;
- }
- /* turn the list into a ring */
- /*
- lr->next = ap_listeners;
- head_listener = ap_listeners;
- */
-
- close_unused_listeners();
-
-#ifdef NO_SERIALIZED_ACCEPT
- /* warn them about the starvation problem if they're using multiple
- * sockets
- */
- if (ap_listeners->next != ap_listeners) {
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_CRIT, NULL,
- "You cannot use multiple Listens safely on your system, "
- "proceeding anyway. See src/PORTING, search for "
- "SERIALIZED_ACCEPT.");
- }
-#endif
- return listener_count;
-}
-
int ap_graceful_stop_signalled(void)
{
/* XXX - Does this really work? - Manoj */
size_t len = sizeof(struct sockaddr);
BUFF *conn_io;
conn_rec *current_conn;
+ ap_iol *iol;
- ap_note_cleanups_for_fd(p, csd);
-
- /* ZZZ change to AP func */
if (getsockname(csd, &sa_server, &len) < 0) {
ap_log_error(APLOG_MARK, APLOG_ERR, server_conf, "getsockname");
+ close(csd);
+ return;
+ }
+
+ sock_disable_nagle(csd);
+
+ iol = unix_attach_socket(csd);
+ if (iol == NULL) {
+ if (errno == EBADF) {
+ ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, NULL,
+ "filedescriptor (%u) larger than FD_SETSIZE (%u) "
+ "found, you probably need to rebuild Apache with a "
+ "larger FD_SETSIZE", csd, FD_SETSIZE);
+ }
+ else {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, NULL,
+ "error attaching to socket");
+ }
+ close(csd);
return;
}
+
(void) ap_update_child_status(my_child_num, my_thread_num,
SERVER_BUSY_READ, (request_rec *) NULL);
- conn_io = ap_bcreate(p, B_RDWR | B_SOCKET);
- ap_bpushfd(conn_io, csd);
+ conn_io = ap_bcreate(p, B_RDWR);
+ ap_bpush_iol(conn_io, iol);
current_conn = new_connection(p, server_conf, conn_io,
(const struct sockaddr_in *) sa_client,
exit(1);
}
server_conf = s;
- listener_count = setup_listeners(pconf);
+ if ((listener_count = setup_listeners(pconf, server_conf)) < 1) {
+ /* XXX: hey, what's the right way for the mpm to indicate a fatal error? */
+ ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, s,
+ "no listening sockets available, shutting down");
+ return 1;
+ }
ap_clear_pool(plog);
ap_open_logs(server_conf, plog);
ap_log_pid(pconf, ap_pid_fname);
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, server_conf,
"SIGHUP received. Attempting to restart");
}
- copy_listeners(pconf);
if (!is_graceful) {
ap_restart_time = time(NULL); /* ZZZZZ */
}
}
unixd_pre_config();
+ ap_listen_pre_config();
ap_daemons_to_start = DEFAULT_START_DAEMON;
ap_daemons_min_free = DEFAULT_MIN_FREE_DAEMON;
ap_daemons_max_free = DEFAULT_MAX_FREE_DAEMON;
ap_scoreboard_fname = DEFAULT_SCOREBOARD;
ap_lock_fname = DEFAULT_LOCKFILE;
ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
- /* ZZZ Initialize the Network Address here. */
- ap_bind_address.s_addr = htonl(INADDR_ANY);
- ap_listeners = NULL;
- ap_listenbacklog = DEFAULT_LISTENBACKLOG;
ap_extended_status = 0;
ap_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
}
-static void mpmt_pthread_post_config(pool *pconf, pool *plog, pool *ptemp, server_rec *s)
-{
- if (ap_listeners == NULL) {
- /* allocate a default listener */
- listen_rec *new;
-
- new = ap_pcalloc(pconf, sizeof(listen_rec));
- new->local_addr.sin_family = AF_INET;
- new->local_addr.sin_addr = ap_bind_address;
- new->local_addr.sin_port = htons(s->port ? s->port : DEFAULT_HTTP_PORT);
- new->fd = -1;
- new->next = NULL;
- ap_listeners = new;
- }
-}
-
static const char *set_pidfile(cmd_parms *cmd, void *dummy, char *arg)
{
return NULL;
}
-static const char *set_listenbacklog(cmd_parms *cmd, void *dummy, 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;
-}
-
-static const char *set_listener(cmd_parms *cmd, void *dummy, char *ips)
-{
- listen_rec *new;
- char *ports;
- unsigned short port;
-
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
- if (err != NULL) {
- return err;
- }
-
- ports = strchr(ips, ':');
- if (ports != NULL) {
- if (ports == ips) {
- return "Missing IP address";
- }
- else if (ports[1] == '\0') {
- return "Address must end in :<port-number>";
- }
- *(ports++) = '\0';
- }
- else {
- ports = ips;
- }
-
- new=ap_pcalloc(cmd->pool, sizeof(listen_rec));
- /* ZZZ let's set this using the AP funcs. */
- new->local_addr.sin_family = AF_INET;
- if (ports == ips) { /* no address */
- /* ZZZ Initialize the Network Address */
- new->local_addr.sin_addr.s_addr = htonl(INADDR_ANY);
- }
- else {
- new->local_addr.sin_addr.s_addr = ap_get_virthost_addr(ips, NULL);
- }
- port = atoi(ports);
- if (!port) {
- return "Port must be numeric";
- }
- /* ZZZ change to AP funcs.*/
- new->local_addr.sin_port = htons(port);
- new->fd = -1; /*ZZZ change to NULL */
- new->used = 0;
- new->next = ap_listeners;
- ap_listeners = new;
- return NULL;
-}
-
struct ap_thread_mutex {
pthread_mutex_t mutex;
};
static const command_rec mpmt_pthread_cmds[] = {
+UNIX_DAEMON_COMMANDS
+LISTEN_COMMANDS
{ "PidFile", set_pidfile, NULL, RSRC_CONF, TAKE1,
"A file for logging the server process ID"},
{ "ScoreBoardFile", set_scoreboard, NULL, RSRC_CONF, TAKE1,
"Maximum number of requests a particular child serves before dying." },
{ "CoreDumpDirectory", set_coredumpdir, NULL, RSRC_CONF, TAKE1,
"The location of the directory Apache changes to before dumping core" },
-{ "ListenBacklog", set_listenbacklog, NULL, RSRC_CONF, TAKE1,
- "Maximum length of the queue of pending connections, as used by listen(2)" },
-{ "Listen", set_listener, NULL, RSRC_CONF, TAKE1,
- "A port number or a numeric IP address and a port number"},
{ NULL }
};
STANDARD20_MODULE_STUFF,
mpmt_pthread_pre_command_line, /* pre_command_line */
mpmt_pthread_pre_config, /* pre_config */
- mpmt_pthread_post_config, /* post_config */
+ NULL, /* post_config */
NULL, /* open_logs */
NULL, /* child_init */
NULL, /* create per-directory config structure */
return XML_ErrorString(XML_ERROR_NONE);
}
#endif /* USE_EXPAT */
-
-#include "acceptlock.c"
-#include "http_accept.c"
-#include "scoreboard.c"
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