*/
/** @file
* @brief Implementation for handling listening sockets.
- * @version $Id: listener.c,v 1.28.2.1 2006/03/14 03:45:52 entrope Exp $
+ * @version $Id: listener.c,v 1.28.2.4 2006/12/08 00:44:38 entrope Exp $
*/
#include "config.h"
memset(listener, 0, sizeof(struct Listener));
- listener->fd = -1;
+ listener->fd_v4 = -1;
+ listener->fd_v6 = -1;
listener->addr.port = port;
memcpy(&listener->addr.addr, addr, sizeof(listener->addr.addr));
int show_hidden = IsOper(sptr);
int count = (IsOper(sptr) || MyUser(sptr)) ? 100 : 8;
int port = 0;
+ int len;
assert(0 != sptr);
for (listener = ListenerPollList; listener; listener = listener->next) {
if (port && port != listener->addr.port)
continue;
- flags[0] = (listener->server) ? 'S' : 'C';
- if (listener->hidden) {
- if (!show_hidden)
- continue;
- flags[1] = 'H';
- flags[2] = '\0';
+ len = 0;
+ flags[len++] = listener_server(listener) ? 'S' : 'C';
+ if (show_hidden && FlagHas(&listener->flags, LISTEN_HIDDEN))
+ flags[len++] = 'H';
+ if (FlagHas(&listener->flags, LISTEN_IPV4))
+ {
+ flags[len++] = '4';
+ if (listener->fd_v4 < 0)
+ flags[len++] = '-';
+ }
+ if (FlagHas(&listener->flags, LISTEN_IPV6))
+ {
+ flags[len++] = '6';
+ if (listener->fd_v6 < 0)
+ flags[len++] = '-';
}
- else
- flags[1] = '\0';
+ flags[len] = '\0';
send_reply(sptr, RPL_STATSPLINE, listener->addr.port, listener->ref_count,
- flags, (listener->active) ? "active" : "disabled");
+ flags, listener_active(listener) ? "active" : "disabled");
if (--count == 0)
break;
}
#define HYBRID_SOMAXCONN 64
#endif
-/** Open listening socket for \a listener.
- * @param[in,out] listener Listener to make a socket for.
+/** Set or update socket options for \a listener.
+ * @param[in] listener Listener to determine socket option values.
+ * @param[in] fd File descriptor being updated.
* @return Non-zero on success, zero on failure.
*/
-static int inetport(struct Listener* listener)
+static int set_listener_options(struct Listener *listener, int fd)
{
- int fd;
+ int is_server;
- /*
- * At first, open a new socket
- */
- fd = os_socket(&listener->addr, SOCK_STREAM, get_listener_name(listener), 0);
- if (fd < 0)
- return 0;
+ is_server = listener_server(listener);
/*
* Set the buffer sizes for the listener. Accepted connections
* inherit the accepting sockets settings for SO_RCVBUF S_SNDBUF
* NOTE: this must be set before listen is called
*/
if (!os_set_sockbufs(fd,
- (listener->server) ? feature_int(FEAT_SOCKSENDBUF) : CLIENT_TCP_WINDOW,
- (listener->server) ? feature_int(FEAT_SOCKRECVBUF) : CLIENT_TCP_WINDOW)) {
+ is_server ? feature_int(FEAT_SOCKSENDBUF) : CLIENT_TCP_WINDOW,
+ is_server ? feature_int(FEAT_SOCKRECVBUF) : CLIENT_TCP_WINDOW)) {
report_error(SETBUFS_ERROR_MSG, get_listener_name(listener), errno);
close(fd);
return 0;
}
- if (!os_set_listen(fd, HYBRID_SOMAXCONN)) {
- report_error(LISTEN_ERROR_MSG, get_listener_name(listener), errno);
- close(fd);
- return 0;
- }
+
/*
* Set the TOS bits - this is nonfatal if it doesn't stick.
*/
- if (!os_set_tos(fd,feature_int((listener->server)?FEAT_TOS_SERVER : FEAT_TOS_CLIENT))) {
+ if (!os_set_tos(fd,feature_int(is_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,
+ return 1;
+}
+
+/** Open listening socket for \a listener.
+ * @param[in,out] listener Listener to make a socket for.
+ * @param[in] family Socket address family to use.
+ * @return Negative on failure, file descriptor on success.
+ */
+static int inetport(struct Listener* listener, int family)
+{
+ struct Socket *sock;
+ int fd;
+
+ /*
+ * At first, open a new socket
+ */
+ fd = os_socket(&listener->addr, SOCK_STREAM, get_listener_name(listener), family);
+ if (fd < 0)
+ return -1;
+ if (!os_set_listen(fd, HYBRID_SOMAXCONN)) {
+ report_error(LISTEN_ERROR_MSG, get_listener_name(listener), errno);
+ close(fd);
+ return -1;
+ }
+ if (!set_listener_options(listener, fd))
+ return -1;
+ sock = (family == AF_INET) ? &listener->socket_v4 : &listener->socket_v6;
+ if (!socket_add(sock, accept_connection, (void*) listener,
SS_LISTENING, 0, fd)) {
/* Error should already have been reported to the logs */
close(fd);
- return 0;
+ return -1;
}
- listener->fd = fd;
-
- return 1;
+ return fd;
}
/** Find the listener (if any) for a particular port and address.
* @param[in] port Port number to listen on.
* @param[in] vhost_ip Local address to listen on.
* @param[in] mask Address mask to accept connections from.
- * @param[in] is_server Non-zero if the port should only accept server connections.
- * @param[in] is_hidden Non-zero if the port should be hidden from /STATS P output.
+ * @param[in] flags Flags describing listener options.
*/
void add_listener(int port, const char* vhost_ip, const char* mask,
- int is_server, int is_hidden)
+ const struct ListenerFlags *flags)
{
struct Listener* listener;
struct irc_in_addr vaddr;
+ int okay = 0;
+ int new_listener = 0;
+ int fd;
/*
* if no port in conf line, don't bother
listener = find_listener(port, &vaddr);
if (!listener)
+ {
+ new_listener = 1;
listener = make_listener(port, &vaddr);
- listener->active = 1;
- listener->hidden = is_hidden;
- listener->server = is_server;
+ }
+ memcpy(&listener->flags, flags, sizeof(listener->flags));
+ FlagSet(&listener->flags, LISTEN_ACTIVE);
if (mask)
ipmask_parse(mask, &listener->mask, &listener->mask_bits);
else
listener->mask_bits = 0;
- if (listener->fd >= 0) {
- /* If the listener is already open, do not try to re-open. */
+#ifdef IPV6
+ if (FlagHas(&listener->flags, LISTEN_IPV6)) {
+ if (listener->fd_v6 >= 0) {
+ set_listener_options(listener, listener->fd_v6);
+ okay = 1;
+ } else if ((fd = inetport(listener, AF_INET6)) >= 0) {
+ listener->fd_v6 = fd;
+ okay = 1;
+ }
+ } else if (-1 < listener->fd_v6) {
+ close(listener->fd_v6);
+ socket_del(&listener->socket_v6);
+ listener->fd_v6 = -1;
}
- else if (inetport(listener)) {
+#endif
+
+ if (FlagHas(&listener->flags, LISTEN_IPV4)) {
+ if (listener->fd_v4 >= 0) {
+ set_listener_options(listener, listener->fd_v4);
+ okay = 1;
+ } else if ((fd = inetport(listener, AF_INET)) >= 0) {
+ listener->fd_v4 = fd;
+ okay = 1;
+ }
+ } else if (-1 < listener->fd_v4) {
+ close(listener->fd_v4);
+ socket_del(&listener->socket_v4);
+ listener->fd_v4 = -1;
+ }
+
+ if (!okay)
+ free_listener(listener);
+ else if (new_listener) {
listener->next = ListenerPollList;
ListenerPollList = listener;
}
- else
- free_listener(listener);
}
/** Mark all listeners as closing (inactive).
{
struct Listener* listener;
for (listener = ListenerPollList; listener; listener = listener->next)
- listener->active = 0;
+ FlagClr(&listener->flags, LISTEN_ACTIVE);
}
/** Close a single listener.
}
}
}
- if (-1 < listener->fd)
- close(listener->fd);
- socket_del(&listener->socket);
+ if (-1 < listener->fd_v4) {
+ close(listener->fd_v4);
+ socket_del(&listener->socket_v4);
+ listener->fd_v4 = -1;
+ }
+ if (-1 < listener->fd_v6) {
+ close(listener->fd_v6);
+ socket_del(&listener->socket_v6);
+ listener->fd_v6 = -1;
+ }
+ free_listener(listener);
}
/** Close all inactive listeners. */
*/
for (listener = ListenerPollList; listener; listener = listener_next) {
listener_next = listener->next;
- if (0 == listener->active && 0 == listener->ref_count)
+ if (!listener_active(listener) && 0 == listener->ref_count)
close_listener(listener);
}
}
{
assert(0 != listener);
assert(0 < listener->ref_count);
- if (0 == --listener->ref_count && !listener->active)
+ if (0 == --listener->ref_count && !listener_active(listener))
close_listener(listener);
}
listener = (struct Listener*) s_data(ev_socket(ev));
if (ev_type(ev) == ET_DESTROY) /* being destroyed */
- free_listener(listener);
+ return;
else {
assert(ev_type(ev) == ET_ACCEPT || ev_type(ev) == ET_ERROR);
*/
while (1)
{
- if ((fd = os_accept(listener->fd, &addr)) == -1)
+ if ((fd = os_accept(s_fd(ev_socket(ev)), &addr)) == -1)
{
if (errno == EAGAIN ||
#ifdef EWOULDBLOCK
* to accept(), because it makes sense to clear our the
* socket's queue as fast as possible.
*/
- if (!listener->active)
+ if (!listener_active(listener))
{
++ServerStats->is_ref;
send(fd, "ERROR :Use another port\r\n", 25, 0);