*
* $Id$
*/
+#include "config.h"
+
#include "listener.h"
#include "client.h"
#include "ircd.h"
#include "ircd_alloc.h"
+#include "ircd_events.h"
+#include "ircd_features.h"
#include "ircd_osdep.h"
#include "ircd_reply.h"
+#include "ircd_snprintf.h"
#include "ircd_string.h"
+#include "match.h"
#include "numeric.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_misc.h"
+#include "s_stats.h"
#include "send.h"
-#include "sprintf_irc.h"
#include "sys.h" /* MAXCLIENTS */
#include <assert.h>
struct Listener* ListenerPollList = 0;
-static struct Listener* make_listener(int port, struct in_addr addr)
+static void accept_connection(struct Event* ev);
+
+static struct Listener* make_listener(int port, const struct irc_in_addr *addr)
{
- struct Listener* listener =
+ struct Listener* listener =
(struct Listener*) MyMalloc(sizeof(struct Listener));
assert(0 != listener);
memset(listener, 0, sizeof(struct Listener));
listener->fd = -1;
- listener->port = port;
- listener->addr.s_addr = addr.s_addr;
+ listener->addr.port = port;
+ memcpy(&listener->addr.addr, addr, sizeof(listener->addr.addr));
#ifdef NULL_POINTER_NOT_ZERO
listener->next = NULL;
{
static char buf[HOSTLEN + PORTNAMELEN + 4];
assert(0 != listener);
- sprintf_irc(buf, "%s:%u", me.name, listener->port);
+ ircd_snprintf(0, buf, sizeof(buf), "%s:%u", cli_name(&me), listener->addr.port);
return buf;
}
* side effects - show ports
* author - Dianora
*/
-void show_ports(struct Client* sptr, int show_hidden, int port, int count)
+void show_ports(struct Client* sptr, struct StatDesc* sd, int stat,
+ char* param)
{
- struct Listener* listener = 0;
- char flags[8];
+ struct Listener *listener = 0;
+ char flags[8];
+ int show_hidden = IsOper(sptr);
+ int count = (IsOper(sptr) || MyUser(sptr)) ? 100 : 8;
+ int port = 0;
+
assert(0 != sptr);
+ if (param)
+ port = atoi(param);
+
for (listener = ListenerPollList; listener; listener = listener->next) {
- if (port && port != listener->port)
+ if (port && port != listener->addr.port)
continue;
flags[0] = (listener->server) ? 'S' : 'C';
if (listener->hidden) {
else
flags[1] = '\0';
- send_reply(sptr, RPL_STATSPLINE, listener->port, listener->ref_count,
+ send_reply(sptr, RPL_STATSPLINE, listener->addr.port, listener->ref_count,
flags, (listener->active) ? "active" : "disabled");
if (--count == 0)
break;
static int inetport(struct Listener* listener)
{
- struct sockaddr_in sin;
int fd;
/*
* At first, open a new socket
*/
- if (-1 == (fd = socket(AF_INET, SOCK_STREAM, 0))) {
- report_error(SOCKET_ERROR_MSG, get_listener_name(listener), errno);
- return 0;
- }
- else if (fd > MAXCLIENTS - 1) {
- report_error(CONNLIMIT_ERROR_MSG, get_listener_name(listener), 0);
- close(fd);
- return 0;
- }
-
- if (!os_set_reuseaddr(fd)) {
- report_error(REUSEADDR_ERROR_MSG, get_listener_name(listener), errno);
- close(fd);
- return 0;
- }
- /*
- * Bind a port to listen for new connections if port is non-null,
- * else assume it is already open and try get something from it.
- */
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr = listener->addr;
- sin.sin_port = htons(listener->port);
-
- if (bind(fd, (struct sockaddr*) &sin, sizeof(sin))) {
- report_error(BIND_ERROR_MSG, get_listener_name(listener), errno);
- close(fd);
+ fd = os_socket(&listener->addr, SOCK_STREAM, get_listener_name(listener));
+ if (fd < 0)
return 0;
- }
/*
* Set the buffer sizes for the listener. Accepted connections
* inherit the accepting sockets settings for SO_RCVBUF S_SNDBUF
* else has no effect whatsoever on the connection.
* NOTE: this must be set before listen is called
*/
- if (!os_set_sockbufs(fd, (listener->server) ? SERVER_TCP_WINDOW : CLIENT_TCP_WINDOW)) {
+ if (!os_set_sockbufs(fd,
+ (listener->server) ? feature_int(FEAT_SOCKSENDBUF) : CLIENT_TCP_WINDOW,
+ (listener->server) ? feature_int(FEAT_SOCKRECVBUF) : CLIENT_TCP_WINDOW)) {
report_error(SETBUFS_ERROR_MSG, get_listener_name(listener), errno);
close(fd);
return 0;
return 0;
}
/*
- * XXX - this should always work, performance will suck if it doesn't
+ * Set the TOS bits - this is nonfatal if it doesn't stick.
*/
- if (!os_set_nonblocking(fd)) {
- report_error(NONB_ERROR_MSG, get_listener_name(listener), errno);
+ if (!os_set_tos(fd,feature_int((listener->server)?FEAT_TOS_SERVER : FEAT_TOS_CLIENT))) {
+ report_error(TOS_ERROR_MSG, get_listener_name(listener), errno);
+ }
+
+ if (!socket_add(&listener->socket, accept_connection, (void*) listener,
+ SS_LISTENING, 0, fd)) {
+ /* Error should already have been reported to the logs */
close(fd);
return 0;
}
+
listener->fd = fd;
return 1;
* XXX - this function does N comparisons so if the list is huge
* we may want to do something else for this. (rehash and init use this)
*/
-static struct Listener* find_listener(int port, struct in_addr addr)
+static struct Listener* find_listener(int port, const struct irc_in_addr *addr)
{
struct Listener* listener;
for (listener = ListenerPollList; listener; listener = listener->next) {
- if (port == listener->port && addr.s_addr == listener->addr.s_addr)
+ if (port == listener->addr.port && !memcmp(addr, &listener->addr.addr, sizeof(*addr)))
return listener;
}
return 0;
}
/*
- * set_listener_mask - set the connection mask for this listener
- */
-static void set_listener_mask(struct Listener* listener, const char* mask)
-{
- int ad[4];
- char ipname[20];
-
- assert(0 != listener);
-
- if (EmptyString(mask) || 0 == strcmp(mask, "*")) {
- listener->mask.s_addr = 0;
- return;
- }
- ad[0] = ad[1] = ad[2] = ad[3] = 0;
- /*
- * do it this way because building ip# from separate values for each
- * byte requires endian knowledge or some nasty messing. Also means
- * easy conversion of "*" 0.0.0.0 or 134.* to 134.0.0.0 :-)
- */
- sscanf(mask, "%d.%d.%d.%d", &ad[0], &ad[1], &ad[2], &ad[3]);
- sprintf_irc(ipname, "%d.%d.%d.%d", ad[0], ad[1], ad[2], ad[3]);
- listener->mask.s_addr = inet_addr(ipname);
-}
-
-/*
- * connection_allowed - spin through mask and addr passed to see if connect
- * allowed on a listener, uses mask generated by set_listener_mask
- */
-static int connection_allowed(const char* addr, const char* mask)
-{
- int i = 4;
- for ( ; i > 0; --i) {
- if (*mask && *addr != *mask)
- break;
- ++addr;
- ++mask;
- }
- return (0 == i);
-}
-
-
-/*
- * add_listener- create a new listener
+ * add_listener- create a new listener
* port - the port number to listen on
* vhost_ip - if non-null must contain a valid IP address string in
* the format "255.255.255.255"
*/
void add_listener(int port, const char* vhost_ip, const char* mask,
- int is_server, int is_hidden)
+ int is_server, int is_hidden)
{
struct Listener* listener;
- struct in_addr vaddr;
+ struct irc_in_addr vaddr;
/*
* if no port in conf line, don't bother
if (0 == port)
return;
- vaddr.s_addr = INADDR_ANY;
+ memset(&vaddr, 0, sizeof(vaddr));
- if (!EmptyString(vhost_ip) && strcmp(vhost_ip,"*") != 0) {
- vaddr.s_addr = inet_addr(vhost_ip);
- if (INADDR_NONE == vaddr.s_addr)
+ if (!EmptyString(vhost_ip)
+ && strcmp(vhost_ip, "*")
+ && !ircd_aton(&vaddr, vhost_ip))
return;
- }
- if ((listener = find_listener(port, vaddr))) {
+ if ((listener = find_listener(port, &vaddr))) {
/*
- * set active flag and change connect mask here, it's the only thing
+ * set active flag and change connect mask here, it's the only thing
* that can change on a rehash
*/
listener->active = 1;
- set_listener_mask(listener, mask);
+ if (mask)
+ ipmask_parse(mask, &listener->mask, &listener->mask_bits);
+ else
+ listener->mask_bits = 0;
listener->hidden = is_hidden;
listener->server = is_server;
return;
}
- listener = make_listener(port, vaddr);
+ listener = make_listener(port, &vaddr);
if (inetport(listener)) {
listener->active = 1;
- set_listener_mask(listener, mask);
+ if (mask)
+ ipmask_parse(mask, &listener->mask, &listener->mask_bits);
+ else
+ listener->mask_bits = 0;
listener->hidden = is_hidden;
listener->server = is_server;
listener->next = ListenerPollList;
- ListenerPollList = listener;
+ ListenerPollList = listener;
}
else
free_listener(listener);
}
if (-1 < listener->fd)
close(listener->fd);
- free_listener(listener);
+ socket_del(&listener->socket);
}
/*
/*
* accept_connection - accept a connection on a listener
*/
-void accept_connection(struct Listener* listener)
+static void accept_connection(struct Event* ev)
{
- struct sockaddr_in addr = { 0 };
- unsigned int addrlen = sizeof(struct sockaddr_in);
- int fd;
+ struct Listener* listener;
+ struct irc_sockaddr addr;
+ int fd;
- assert(0 != listener);
+ assert(0 != ev_socket(ev));
+ assert(0 != s_data(ev_socket(ev)));
- listener->last_accept = CurrentTime;
- /*
- * There may be many reasons for error return, but
- * in otherwise correctly working environment the
- * probable cause is running out of file descriptors
- * (EMFILE, ENFILE or others?). The man pages for
- * accept don't seem to list these as possible,
- * although it's obvious that it may happen here.
- * Thus no specific errors are tested at this
- * point, just assume that connections cannot
- * be accepted until some old is closed first.
- */
- if (-1 == (fd = accept(listener->fd, (struct sockaddr*) &addr, &addrlen))) {
- /* Lotsa admins seem to have problems with not giving enough file descriptors
- * to their server so we'll add a generic warning mechanism here. If it
- * turns out too many messages are generated for meaningless reasons we
- * can filter them back.
+ listener = (struct Listener*) s_data(ev_socket(ev));
+
+ if (ev_type(ev) == ET_DESTROY) /* being destroyed */
+ free_listener(listener);
+ else {
+ assert(ev_type(ev) == ET_ACCEPT || ev_type(ev) == ET_ERROR);
+
+ listener->last_accept = CurrentTime;
+ /*
+ * There may be many reasons for error return, but
+ * in otherwise correctly working environment the
+ * probable cause is running out of file descriptors
+ * (EMFILE, ENFILE or others?). The man pages for
+ * accept don't seem to list these as possible,
+ * although it's obvious that it may happen here.
+ * Thus no specific errors are tested at this
+ * point, just assume that connections cannot
+ * be accepted until some old is closed first.
+ *
+ * This piece of code implements multi-accept, based
+ * on the idea that poll/select can only be efficient,
+ * if we succeed in handling all available events,
+ * i.e. accept all pending connections.
+ *
+ * http://www.hpl.hp.com/techreports/2000/HPL-2000-174.html
*/
- sendto_op_mask(SNO_TCPCOMMON,"Unable to accept connection: %s", strerror(errno));
- return;
- }
- /*
- * check for connection limit
- */
- if (fd > MAXCLIENTS - 1) {
- ++ServerStats->is_ref;
- send(fd, "ERROR :All connections in use\r\n", 32, 0);
- close(fd);
- return;
- }
- /*
- * check to see if listener is shutting down
- */
- if (!listener->active) {
- ++ServerStats->is_ref;
- send(fd, "ERROR :Use another port\r\n", 25, 0);
- close(fd);
- return;
- }
- /*
- * check to see if connection is allowed for this address mask
- */
- if (!connection_allowed((const char*) &addr, (const char*) &listener->mask)) {
- ++ServerStats->is_ref;
- send(fd, "ERROR :Use another port\r\n", 25, 0);
- close(fd);
- return;
- }
-#if 0
- /*
- * check conf for ip address access
- */
- if (!conf_connect_allowed(addr.sin_addr)) {
- ++ServerStats->is_ref;
- send(fd, "ERROR :Not authorized\r\n", 23, 0);
- close(fd);
- return;
- }
+ while (1)
+ {
+ if ((fd = os_accept(listener->fd, &addr)) == -1)
+ {
+ if (errno == EAGAIN ||
+#ifdef EWOULDBLOCK
+ errno == EWOULDBLOCK)
#endif
- ++ServerStats->is_ac;
- nextping = CurrentTime;
-
- add_connection(listener, fd);
+ return;
+ /* Lotsa admins seem to have problems with not giving enough file
+ * descriptors to their server so we'll add a generic warning mechanism
+ * here. If it turns out too many messages are generated for
+ * meaningless reasons we can filter them back.
+ */
+ sendto_opmask_butone(0, SNO_TCPCOMMON,
+ "Unable to accept connection: %m");
+ return;
+ }
+ /*
+ * check for connection limit. If this fd exceeds the limit,
+ * all further accept()ed connections will also exceed it.
+ * Enable the server to clear out other connections before
+ * continuing to accept() new connections.
+ */
+ if (fd > MAXCLIENTS - 1)
+ {
+ ++ServerStats->is_ref;
+ send(fd, "ERROR :All connections in use\r\n", 32, 0);
+ close(fd);
+ return;
+ }
+ /*
+ * check to see if listener is shutting down. Continue
+ * to accept(), because it makes sense to clear our the
+ * socket's queue as fast as possible.
+ */
+ if (!listener->active)
+ {
+ ++ServerStats->is_ref;
+ send(fd, "ERROR :Use another port\r\n", 25, 0);
+ close(fd);
+ continue;
+ }
+ /*
+ * check to see if connection is allowed for this address mask
+ */
+ if (!ipmask_check(&addr.addr, &listener->mask, listener->mask_bits))
+ {
+ ++ServerStats->is_ref;
+ send(fd, "ERROR :Use another port\r\n", 25, 0);
+ close(fd);
+ continue;
+ }
+ ++ServerStats->is_ac;
+ /* nextping = CurrentTime; */
+ add_connection(listener, fd);
+ }
+ }
}
-
-
projects / ircu2.10.12-pk.git / blobdiff