mirror of
https://github.com/matrix-construct/construct
synced 2024-11-17 15:30:52 +01:00
ircd: Remove old listener. (note to readd ban logic).
This commit is contained in:
Jason Volk
parent
d098a524e1
commit
d36541bb86
3 changed files with 0 additions and 660 deletions
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@ -1,53 +0,0 @@
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/*
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* ircd-ratbox: A slightly useful ircd.
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* listener.h: A header for the listener code.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2004 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#pragma once
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#define HAVE_IRCD_LISTENER_H
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#ifdef __cplusplus
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namespace ircd {
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struct Listener
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{
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struct Listener *next; /* list node pointer */
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const char *name; /* listener name */
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rb_fde_t *F; /* file descriptor */
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int ref_count; /* number of connection references */
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int active; /* current state of listener */
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int ssl; /* ssl listener */
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int defer_accept; /* use TCP_DEFER_ACCEPT */
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int wsock; /* wsock listener */
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struct rb_sockaddr_storage addr;
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char vhost[HOSTLEN + 1]; /* virtual name of listener */
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};
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extern void add_listener(int port, const char *vaddr_ip, int family, int ssl, int defer_accept, int wsock);
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extern void close_listener(struct Listener *listener);
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extern void close_listeners(void);
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extern const char *get_listener_name(const struct Listener *listener);
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extern void show_ports(client::client *client);
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extern void free_listener(struct Listener *);
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} // namespace ircd
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#endif // __cplusplus
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@ -64,8 +64,6 @@ namespace ircd
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}
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struct ConfItem;
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struct DNSReply;
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struct Listener;
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struct Blacklist;
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struct PrivilegeSet;
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struct _ssl_ctl;
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@ -128,7 +126,6 @@ namespace ircd
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#include "dns.h"
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#include "hash.h"
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#include "hook.h"
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#include "listener.h"
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#include "monitor.h"
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#include "operhash.h"
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#include "packet.h"
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604
ircd/listener.cc
604
ircd/listener.cc
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@ -1,604 +0,0 @@
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/*
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* ircd-ratbox: A slightly useful ircd.
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* listener.c: Listens on a port.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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namespace ircd {
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#if defined(NO_IN6ADDR_ANY) && defined(RB_IPV6)
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static const struct in6_addr in6addr_any =
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{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
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#endif
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static struct Listener *ListenerPollList = NULL;
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static int accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data);
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static void accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data);
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static client::SSL_OPEN_CB accept_sslcallback;
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static struct Listener *
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make_listener(struct rb_sockaddr_storage *addr)
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{
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struct Listener *listener = (struct Listener *) rb_malloc(sizeof(struct Listener));
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s_assert(0 != listener);
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listener->name = me.name;
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listener->F = NULL;
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memcpy(&listener->addr, addr, sizeof(struct rb_sockaddr_storage));
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listener->next = NULL;
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return listener;
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}
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void
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free_listener(struct Listener *listener)
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{
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s_assert(NULL != listener);
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if(listener == NULL)
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return;
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/*
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* remove from listener list
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*/
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if(listener == ListenerPollList)
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ListenerPollList = listener->next;
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else
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{
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struct Listener *prev = ListenerPollList;
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for (; prev; prev = prev->next)
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{
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if(listener == prev->next)
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{
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prev->next = listener->next;
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break;
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}
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}
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}
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/* free */
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rb_free(listener);
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}
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#define PORTNAMELEN 6 /* ":31337" */
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/*
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* get_listener_port - return displayable listener port
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*/
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static uint16_t
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get_listener_port(const struct Listener *listener)
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{
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return ntohs(GET_SS_PORT(&listener->addr));
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}
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/*
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* get_listener_name - return displayable listener name and port
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* returns "host.foo.org:6667" for a given listener
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*/
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const char *
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get_listener_name(const struct Listener *listener)
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{
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static char buf[HOSTLEN + HOSTLEN + PORTNAMELEN + 4];
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s_assert(NULL != listener);
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if(listener == NULL)
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return NULL;
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snprintf(buf, sizeof(buf), "%s[%s/%u]",
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me.name, listener->name, get_listener_port(listener));
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return buf;
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}
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/*
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* show_ports - send port listing to a client
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* inputs - pointer to client to show ports to
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* output - none
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* side effects - show ports
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*/
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void
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show_ports(client::client *source_p)
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{
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struct Listener *listener = 0;
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for (listener = ListenerPollList; listener; listener = listener->next)
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{
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sendto_one_numeric(source_p, RPL_STATSPLINE,
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form_str(RPL_STATSPLINE), 'P',
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get_listener_port(listener),
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IsOperAdmin(source_p) ? listener->name : me.name,
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listener->ref_count, (listener->active) ? "active" : "disabled",
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listener->ssl ? " ssl" : "");
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}
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}
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/*
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* inetport - create a listener socket in the AF_INET or AF_INET6 domain,
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* bind it to the port given in 'port' and listen to it
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* returns true (1) if successful false (0) on error.
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*/
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static int
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inetport(struct Listener *listener)
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{
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rb_fde_t *F;
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int opt = 1;
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const char *errstr;
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/*
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* At first, open a new socket
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*/
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F = rb_socket(GET_SS_FAMILY(&listener->addr), SOCK_STREAM, 0, "Listener socket");
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#ifdef RB_IPV6
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if(GET_SS_FAMILY(&listener->addr) == AF_INET6)
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{
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struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&listener->addr;
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if(!IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &in6addr_any))
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{
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rb_inet_ntop(AF_INET6, &in6->sin6_addr, listener->vhost, sizeof(listener->vhost));
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listener->name = listener->vhost;
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}
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} else
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#endif
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{
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struct sockaddr_in *in = (struct sockaddr_in *)&listener->addr;
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if(in->sin_addr.s_addr != INADDR_ANY)
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{
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rb_inet_ntop(AF_INET, &in->sin_addr, listener->vhost, sizeof(listener->vhost));
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listener->name = listener->vhost;
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}
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}
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if(F == NULL)
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{
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sendto_realops_snomask(sno::GENERAL, L_ALL,
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"Cannot open socket for listener on port %d",
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get_listener_port(listener));
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ilog(L_MAIN, "Cannot open socket for listener %s",
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get_listener_name(listener));
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return 0;
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}
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else if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus*/
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{
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log::error("no more connections left for listener");
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sendto_realops_snomask(sno::GENERAL, L_ALL,
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"No more connections left for listener on port %d",
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get_listener_port(listener));
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ilog(L_MAIN, "No more connections left for listener %s",
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get_listener_name(listener));
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rb_close(F);
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return 0;
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}
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/*
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* XXX - we don't want to do all this crap for a listener
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* set_sock_opts(listener);
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*
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* FIXME - doesn't this belong in librb? --Elizafox
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*/
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if(setsockopt(rb_get_fd(F), SOL_SOCKET, SO_REUSEADDR, (char *) &opt, sizeof(opt)))
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{
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errstr = strerror(rb_get_sockerr(F));
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sendto_realops_snomask(sno::GENERAL, L_ALL,
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"Cannot set SO_REUSEADDR for listener on port %d: %s",
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get_listener_port(listener), errstr);
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ilog(L_MAIN, "Cannot set SO_REUSEADDR for listener %s: %s",
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get_listener_name(listener), errstr);
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rb_close(F);
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return 0;
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}
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/* FIXME - doesn't this belong in librb? --Elizafox */
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if(bind(rb_get_fd(F), (struct sockaddr *) &listener->addr, GET_SS_LEN(&listener->addr)))
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{
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errstr = strerror(rb_get_sockerr(F));
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sendto_realops_snomask(sno::GENERAL, L_ALL,
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"Cannot bind for listener on port %d: %s",
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get_listener_port(listener), errstr);
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ilog(L_MAIN, "Cannot bind for listener %s: %s",
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get_listener_name(listener), errstr);
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rb_close(F);
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return 0;
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}
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if(rb_listen(F, SOMAXCONN, listener->defer_accept))
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{
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errstr = strerror(rb_get_sockerr(F));
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sendto_realops_snomask(sno::GENERAL, L_ALL,
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"Cannot listen() for listener on port %d: %s",
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get_listener_port(listener), errstr);
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ilog(L_MAIN, "Cannot listen() for listener %s: %s",
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get_listener_name(listener), errstr);
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rb_close(F);
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return 0;
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}
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listener->F = F;
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rb_accept_tcp(listener->F, accept_precallback, accept_callback, listener);
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return 1;
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}
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static struct Listener *
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find_listener(struct rb_sockaddr_storage *addr)
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{
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struct Listener *listener = NULL;
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struct Listener *last_closed = NULL;
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for (listener = ListenerPollList; listener; listener = listener->next)
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{
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if(GET_SS_FAMILY(addr) != GET_SS_FAMILY(&listener->addr))
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continue;
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switch(GET_SS_FAMILY(addr))
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{
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case AF_INET:
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{
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struct sockaddr_in *in4 = (struct sockaddr_in *)addr;
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struct sockaddr_in *lin4 = (struct sockaddr_in *)&listener->addr;
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if(in4->sin_addr.s_addr == lin4->sin_addr.s_addr &&
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in4->sin_port == lin4->sin_port )
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{
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if(listener->F == NULL)
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last_closed = listener;
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else
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return(listener);
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}
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break;
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}
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#ifdef RB_IPV6
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case AF_INET6:
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{
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struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr;
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struct sockaddr_in6 *lin6 =(struct sockaddr_in6 *)&listener->addr;
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if(IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &lin6->sin6_addr) &&
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in6->sin6_port == lin6->sin6_port)
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{
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if(listener->F == NULL)
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last_closed = listener;
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else
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return(listener);
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}
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break;
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}
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#endif
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default:
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break;
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}
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}
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return last_closed;
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}
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/*
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* add_listener- create a new listener
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* port - the port number to listen on
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* vhost_ip - if non-null must contain a valid IP address string in
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* the format "255.255.255.255"
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*/
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void
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add_listener(int port, const char *vhost_ip, int family, int ssl, int defer_accept, int wsock)
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{
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struct Listener *listener;
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struct rb_sockaddr_storage vaddr;
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/*
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* if no port in conf line, don't bother
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*/
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if(port == 0)
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return;
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memset(&vaddr, 0, sizeof(vaddr));
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SET_SS_FAMILY(&vaddr, family);
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if(vhost_ip != NULL)
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{
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if(family == AF_INET)
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{
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if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in *)&vaddr)->sin_addr) <= 0)
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return;
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}
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#ifdef RB_IPV6
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else
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{
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if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in6 *)&vaddr)->sin6_addr) <= 0)
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return;
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}
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#endif
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} else
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{
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switch(family)
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{
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case AF_INET:
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((struct sockaddr_in *)&vaddr)->sin_addr.s_addr = INADDR_ANY;
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break;
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#ifdef RB_IPV6
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case AF_INET6:
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memcpy(&((struct sockaddr_in6 *)&vaddr)->sin6_addr, &in6addr_any, sizeof(struct in6_addr));
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break;
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default:
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return;
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#endif
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}
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}
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switch(family)
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{
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case AF_INET:
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SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in));
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SET_SS_FAMILY(&vaddr, AF_INET);
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SET_SS_PORT(&vaddr, htons(port));
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break;
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#ifdef RB_IPV6
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case AF_INET6:
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SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in6));
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SET_SS_FAMILY(&vaddr, AF_INET6);
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SET_SS_PORT(&vaddr, htons(port));
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break;
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#endif
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default:
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break;
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}
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if((listener = find_listener(&vaddr)))
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{
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if(listener->F != NULL)
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return;
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}
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else
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{
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listener = make_listener(&vaddr);
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listener->next = ListenerPollList;
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ListenerPollList = listener;
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}
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listener->F = NULL;
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listener->ssl = ssl;
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listener->defer_accept = defer_accept;
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listener->wsock = wsock;
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if(inetport(listener))
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listener->active = 1;
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else
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close_listener(listener);
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}
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|
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/*
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* close_listener - close a single listener
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*/
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void
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close_listener(struct Listener *listener)
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{
|
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s_assert(listener != NULL);
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if(listener == NULL)
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return;
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if(listener->F != NULL)
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{
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rb_close(listener->F);
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listener->F = NULL;
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}
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listener->active = 0;
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if(listener->ref_count)
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return;
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free_listener(listener);
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}
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|
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/*
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* close_listeners - close and free all listeners that are not being used
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*/
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void
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close_listeners()
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{
|
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struct Listener *listener;
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struct Listener *listener_next = 0;
|
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/*
|
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* close all 'extra' listening ports we have
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*/
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for (listener = ListenerPollList; listener; listener = listener_next)
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{
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listener_next = listener->next;
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close_listener(listener);
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}
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}
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||||
/*
|
||||
* add_connection - creates a client which has just connected to us on
|
||||
* the given fd. The sockhost field is initialized with the ip# of the host.
|
||||
* The client is sent to the auth module for verification, and not put in
|
||||
* any client list yet.
|
||||
*/
|
||||
static void
|
||||
add_connection(struct Listener *listener, rb_fde_t *F, struct sockaddr *sai, struct sockaddr *lai)
|
||||
{
|
||||
client::client *new_client;
|
||||
bool defer = false;
|
||||
s_assert(NULL != listener);
|
||||
|
||||
/*
|
||||
* get the client socket name from the socket
|
||||
* the client has already been checked out in accept_connection
|
||||
*/
|
||||
new_client = client::make_client(NULL);
|
||||
|
||||
if (listener->ssl)
|
||||
{
|
||||
rb_fde_t *xF[2];
|
||||
if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming ssld Connection") == -1)
|
||||
{
|
||||
free_client(new_client);
|
||||
return;
|
||||
}
|
||||
new_client->localClient->ssl_callback = accept_sslcallback;
|
||||
defer = true;
|
||||
new_client->localClient->ssl_ctl = start_ssld_accept(F, xF[1], connid_get(new_client)); /* this will close F for us */
|
||||
if(new_client->localClient->ssl_ctl == NULL)
|
||||
{
|
||||
free_client(new_client);
|
||||
return;
|
||||
}
|
||||
F = xF[0];
|
||||
SetSSL(new_client);
|
||||
}
|
||||
|
||||
if (listener->wsock)
|
||||
{
|
||||
rb_fde_t *xF[2];
|
||||
if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming wsockd Connection") == -1)
|
||||
{
|
||||
free_client(new_client);
|
||||
return;
|
||||
}
|
||||
new_client->localClient->ws_ctl = start_wsockd_accept(F, xF[1], connid_get(new_client)); /* this will close F for us */
|
||||
if(new_client->localClient->ws_ctl == NULL)
|
||||
{
|
||||
free_client(new_client);
|
||||
return;
|
||||
}
|
||||
F = xF[0];
|
||||
}
|
||||
|
||||
memcpy(&new_client->localClient->ip, sai, sizeof(struct rb_sockaddr_storage));
|
||||
memcpy(&new_client->preClient->lip, lai, sizeof(struct rb_sockaddr_storage));
|
||||
|
||||
/*
|
||||
* copy address to 'sockhost' as a string, copy it to host too
|
||||
* so we have something valid to put into error messages...
|
||||
*/
|
||||
rb_inet_ntop_sock((struct sockaddr *)&new_client->localClient->ip, new_client->sockhost,
|
||||
sizeof(new_client->sockhost));
|
||||
|
||||
|
||||
rb_strlcpy(new_client->host, new_client->sockhost, sizeof(new_client->host));
|
||||
|
||||
new_client->localClient->F = F;
|
||||
new_client->localClient->listener = listener;
|
||||
|
||||
++listener->ref_count;
|
||||
|
||||
authd_initiate_client(new_client, defer);
|
||||
}
|
||||
|
||||
static int
|
||||
accept_sslcallback(client::client *client_p, int status)
|
||||
{
|
||||
authd_deferred_client(client_p);
|
||||
return 0; /* use default handler if status != RB_OK */
|
||||
}
|
||||
|
||||
static const char *toofast = "ERROR :Reconnecting too fast, throttled.\r\n";
|
||||
|
||||
static int
|
||||
accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data)
|
||||
{
|
||||
struct Listener *listener = (struct Listener *)data;
|
||||
char buf[BUFSIZE];
|
||||
struct ConfItem *aconf;
|
||||
static time_t last_oper_notice = 0;
|
||||
int len;
|
||||
|
||||
if(listener->ssl && (!ircd_ssl_ok || !get_ssld_count()))
|
||||
{
|
||||
rb_close(F);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus */
|
||||
{
|
||||
++ServerStats.is_ref;
|
||||
/*
|
||||
* slow down the whining to opers bit
|
||||
*/
|
||||
if((last_oper_notice + 20) <= rb_current_time())
|
||||
{
|
||||
sendto_realops_snomask(sno::GENERAL, L_ALL,
|
||||
"All connections in use. (%s)",
|
||||
get_listener_name(listener));
|
||||
last_oper_notice = rb_current_time();
|
||||
}
|
||||
|
||||
rb_write(F, "ERROR :All connections in use\r\n", 31);
|
||||
rb_close(F);
|
||||
return 0;
|
||||
}
|
||||
|
||||
aconf = find_dline(addr, addr->sa_family);
|
||||
if(aconf != NULL && (aconf->status & CONF_EXEMPTDLINE))
|
||||
return 1;
|
||||
|
||||
/* Do an initial check we aren't connecting too fast or with too many
|
||||
* from this IP... */
|
||||
if(aconf != NULL)
|
||||
{
|
||||
ServerStats.is_ref++;
|
||||
|
||||
if(ConfigFileEntry.dline_with_reason)
|
||||
{
|
||||
len = snprintf(buf, sizeof(buf), "ERROR :*** Banned: %s\r\n", get_user_ban_reason(aconf));
|
||||
if (len >= (int)(sizeof(buf)-1))
|
||||
{
|
||||
buf[sizeof(buf) - 3] = '\r';
|
||||
buf[sizeof(buf) - 2] = '\n';
|
||||
buf[sizeof(buf) - 1] = '\0';
|
||||
}
|
||||
}
|
||||
else
|
||||
strcpy(buf, "ERROR :You have been D-lined.\r\n");
|
||||
|
||||
rb_write(F, buf, strlen(buf));
|
||||
rb_close(F);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(check_reject(F, addr))
|
||||
return 0;
|
||||
|
||||
if(throttle_add(addr))
|
||||
{
|
||||
rb_write(F, toofast, strlen(toofast));
|
||||
rb_close(F);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data)
|
||||
{
|
||||
struct Listener *listener(reinterpret_cast<struct Listener *>(data));
|
||||
struct rb_sockaddr_storage lip;
|
||||
rb_socklen_t locallen = sizeof(struct rb_sockaddr_storage);
|
||||
|
||||
ServerStats.is_ac++;
|
||||
|
||||
if(getsockname(rb_get_fd(F), (struct sockaddr *) &lip, &locallen) < 0)
|
||||
{
|
||||
/* this can fail if the connection disappeared in the meantime */
|
||||
rb_close(F);
|
||||
return;
|
||||
}
|
||||
|
||||
add_connection(listener, F, addr, (struct sockaddr *)&lip);
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in a new issue