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Comparing ircd-hybrid/trunk/src/s_serv.c (file contents):
Revision 2309 by michael, Wed Jun 19 20:48:02 2013 UTC vs.
Revision 3335 by michael, Thu Apr 17 18:55:31 2014 UTC

#	Line 1 | Line 1
1		/*
2	<	*  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	<	*  s_serv.c: Server related functions.
2	>	*  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3		*
4	<	*  Copyright (C) 2005 by the past and present ircd coders, and others.
4	>	*  Copyright (c) 1997-2014 ircd-hybrid development team
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 18 | Line 17
17		*  along with this program; if not, write to the Free Software
18		*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19		*  USA
20	<	*
21	<	*  $Id$
20	>	*/
21	>
22	>	/*! \file s_serv.c
23	>	* \brief Server related functions.
24	>	* \version $Id$
25		*/
26
27		#include "stdinc.h"
#	Line 28 | Line 30
30		#include "rsa.h"
31		#endif
32		#include "list.h"
31	–	#include "channel.h"
32	–	#include "channel_mode.h"
33		#include "client.h"
34	–	#include "dbuf.h"
34		#include "event.h"
36	–	#include "fdlist.h"
35		#include "hash.h"
36		#include "irc_string.h"
37		#include "ircd.h"
#	Line 41 | Line 39
39		#include "s_bsd.h"
40		#include "numeric.h"
41		#include "packet.h"
44	–	#include "irc_res.h"
42		#include "conf.h"
43		#include "s_serv.h"
44		#include "log.h"
48	–	#include "s_misc.h"
45		#include "s_user.h"
46		#include "send.h"
47		#include "memory.h"
48	<	#include "channel.h" /* chcap_usage_counts stuff...*/
48	>	#include "channel.h"
49		#include "parse.h"
50
51		#define MIN_CONN_FREQ 300
52
53		dlink_list flatten_links;
54		static dlink_list cap_list = { NULL, NULL, 0 };
59	–	static void server_burst(struct Client *);
60	–	static void burst_all(struct Client *);
61	–	static void send_tb(struct Client *client_p, struct Channel *chptr);
62	–
55		static CNCB serv_connect_callback;
56
65	–	static void burst_members(struct Client *, struct Channel *);
57
58		/*
59		* write_links_file
#	Line 77 | Line 68 | write_links_file(void *notused)
68		{
69		FILE *file = NULL;
70		dlink_node *ptr = NULL, *ptr_next = NULL;
71	<	char buff[IRCD_BUFSIZE] = { '\0' };
71	>	char buff[IRCD_BUFSIZE] = "";
72
73		if ((file = fopen(LIPATH, "w")) == NULL)
74		return;
#	Line 126 | Line 117 | read_links_file(void)
117		{
118		FILE *file = NULL;
119		char *p = NULL;
120	<	char buff[IRCD_BUFSIZE] = { '\0' };
120	>	char buff[IRCD_BUFSIZE] = "";
121
122		if ((file = fopen(LIPATH, "r")) == NULL)
123		return;
124
125		while (fgets(buff, sizeof(buff), file))
126		{
127	<	if ((p = strchr(buff, '\n')) != NULL)
127	>	if ((p = strchr(buff, '\n')))
128		*p = '\0';
129
130		dlinkAddTail(xstrdup(buff), make_dlink_node(), &flatten_links);
#	Line 162 | Line 153 | read_links_file(void)
153		*      returns: (see #defines)
154		*/
155		int
156	<	hunt_server(struct Client *client_p, struct Client *source_p, const char *command,
156	>	hunt_server(struct Client *source_p, const char *command,
157		const int server, const int parc, char *parv[])
158		{
159		struct Client *target_p = NULL;
#	Line 184 | Line 175 | hunt_server(struct Client *client_p, str
175		if (MyClient(source_p))
176		target_p = hash_find_client(parv[server]);
177		else
178	<	target_p = find_person(client_p, parv[server]);
178	>	target_p = find_person(source_p, parv[server]);
179
180		if (target_p)
181		if (target_p->from == source_p->from && !MyConnect(target_p))
#	Line 205 | Line 196 | hunt_server(struct Client *client_p, str
196		{
197		if (!(target_p = hash_find_server(parv[server])))
198		{
199	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
209	<	me.name, source_p->name, parv[server]);
199	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
200		return HUNTED_NOSUCH;
201		}
202		}
#	Line 222 | Line 212 | hunt_server(struct Client *client_p, str
212		continue;
213		target_p = ptr->data;
214
215	<	if (IsRegistered(target_p) && (target_p != client_p))
215	>	if (IsRegistered(target_p) && (target_p != source_p->from))
216		break;
217		}
218		}
219		}
220		}
221
222	<	if (target_p != NULL)
222	>	if (target_p)
223		{
224	<	if(!IsRegistered(target_p))
224	>	if (!IsRegistered(target_p))
225		{
226	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
237	<	me.name, source_p->name, parv[server]);
226	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
227		return HUNTED_NOSUCH;
228		}
229
#	Line 245 | Line 234 | hunt_server(struct Client *client_p, str
234		parv[server] = target_p->name;
235
236		/* This is a little kludgy but should work... */
237	<	if (IsClient(source_p) &&
249	<	((MyConnect(target_p) && IsCapable(target_p, CAP_TS6)) ||
250	<	(!MyConnect(target_p) && IsCapable(target_p->from, CAP_TS6))))
251	<	parv[0] = ID(source_p);
252	<
253	<	sendto_one(target_p, command, parv[0],
237	>	sendto_one(target_p, command, ID_or_name(source_p, target_p),
238		parv[1], parv[2], parv[3], parv[4],
239		parv[5], parv[6], parv[7], parv[8]);
240		return HUNTED_PASS;
241	<	}
241	>	}
242
243	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
260	<	me.name, source_p->name, parv[server]);
243	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
244		return HUNTED_NOSUCH;
245		}
246
#	Line 275 | Line 258 | void
258		try_connections(void *unused)
259		{
260		dlink_node *ptr = NULL;
261	<	struct MaskItem *conf;
279	<	int confrq;
261	>	int confrq = 0;
262
263		/* TODO: change this to set active flag to 0 when added to event! --Habeeb */
264		if (GlobalSetOptions.autoconn == 0)
#	Line 284 | Line 266 | try_connections(void *unused)
266
267		DLINK_FOREACH(ptr, server_items.head)
268		{
269	<	conf = ptr->data;
269	>	struct MaskItem *conf = ptr->data;
270
271		assert(conf->type == CONF_SERVER);
272
273	<	/* Also when already connecting! (update holdtimes) --SRB
273	>	/* Also when already connecting! (update holdtimes) --SRB
274		*/
275		if (!conf->port ||!IsConfAllowAutoConn(conf))
276		continue;
#	Line 314 | Line 296 | try_connections(void *unused)
296
297		conf->until = CurrentTime + confrq;
298
299	<	/* Found a CONNECT config with port specified, scan clients
299	>	/*
300	>	* Found a CONNECT config with port specified, scan clients
301		* and see if this server is already connected?
302		*/
303	<	if (hash_find_server(conf->name) != NULL)
303	>	if (hash_find_server(conf->name))
304		continue;
305
306		if (conf->class->ref_count < conf->class->max_total)
307		{
308		/* Go to the end of the list, if not already last */
309	<	if (ptr->next != NULL)
309	>	if (ptr->next)
310		{
311		dlinkDelete(ptr, &server_items);
312		dlinkAddTail(conf, &conf->node, &server_items);
#	Line 332 | Line 315 | try_connections(void *unused)
315		if (find_servconn_in_progress(conf->name))
316		return;
317
318	<	/* We used to only print this if serv_connect() actually
318	>	/*
319	>	* We used to only print this if serv_connect() actually
320		* succeeded, but since comm_tcp_connect() can call the callback
321		* immediately if there is an error, we were getting error messages
322		* in the wrong order. SO, we just print out the activated line,
#	Line 374 | Line 358 | valid_servname(const char *name)
358		++dots;
359		}
360
361	<	return dots != 0 && length <= HOSTLEN;
361	>	return dots && length <= HOSTLEN;
362		}
363
364		int
#	Line 385 | Line 369 | check_server(const char *name, struct Cl
369		struct MaskItem *server_conf = NULL;
370		int error = -1;
371
372	<	assert(client_p != NULL);
372	>	assert(client_p);
373
374		/* loop through looking for all possible connect items that might work */
375		DLINK_FOREACH(ptr, server_items.head)
#	Line 399 | Line 383 | check_server(const char *name, struct Cl
383
384		/* XXX: Fix me for IPv6                    */
385		/* XXX sockhost is the IPv4 ip as a string */
386	<	if (!match(conf->host, client_p->host) ||
386	>	if (!match(conf->host, client_p->host) ||
387		!match(conf->host, client_p->sockhost))
388		{
389		error = -2;
#	Line 421 | Line 405 | check_server(const char *name, struct Cl
405		attach_conf(client_p, server_conf);
406
407
408	<	if (server_conf != NULL)
408	>	if (server_conf)
409		{
410		struct sockaddr_in *v4;
411		#ifdef IPV6
#	Line 430 | Line 414 | check_server(const char *name, struct Cl
414		switch (server_conf->aftype)
415		{
416		#ifdef IPV6
417	<	case AF_INET6:
417	>	case AF_INET6:
418		v6 = (struct sockaddr_in6 *)&server_conf->addr;
419
420		if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr))
#	Line 441 | Line 425 | check_server(const char *name, struct Cl
425		v4 = (struct sockaddr_in *)&server_conf->addr;
426
427		if (v4->sin_addr.s_addr == INADDR_NONE)
428	<	memcpy(&server_conf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
428	>	memcpy(&server_conf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
429		break;
430		}
431		}
#	Line 480 | Line 464 | add_capability(const char *capab_name, i
464		int
465		delete_capability(const char *capab_name)
466		{
467	<	dlink_node *ptr;
484	<	dlink_node *next_ptr;
485	<	struct Capability *cap;
467	>	dlink_node *ptr = NULL, *ptr_next = NULL;
468
469	<	DLINK_FOREACH_SAFE(ptr, next_ptr, cap_list.head)
469	>	DLINK_FOREACH_SAFE(ptr, ptr_next, cap_list.head)
470		{
471	<	cap = ptr->data;
471	>	struct Capability *cap = ptr->data;
472
473	<	if (cap->cap != 0)
473	>	if (cap->cap)
474		{
475	<	if (irccmp(cap->name, capab_name) == 0)
475	>	if (!irccmp(cap->name, capab_name))
476		{
477		default_server_capabs &= ~(cap->cap);
478		dlinkDelete(ptr, &cap_list);
#	Line 537 | Line 519 | find_capability(const char *capab)
519		void
520		send_capabilities(struct Client *client_p, int cap_can_send)
521		{
522	<	struct Capability *cap=NULL;
523	<	char msgbuf[IRCD_BUFSIZE];
542	<	char *t;
522	>	char msgbuf[IRCD_BUFSIZE] = "";
523	>	char *t = msgbuf;
524		int tl;
525	<	dlink_node *ptr;
545	<
546	<	t = msgbuf;
525	>	dlink_node *ptr = NULL;
526
527		DLINK_FOREACH(ptr, cap_list.head)
528		{
529	<	cap = ptr->data;
529	>	struct Capability *cap = ptr->data;
530
531		if (cap->cap & (cap_can_send|default_server_capabs))
532		{
#	Line 560 | Line 539 | send_capabilities(struct Client *client_
539		sendto_one(client_p, "CAPAB :%s", msgbuf);
540		}
541
563	–	/* sendnick_TS()
564	–	*
565	–	* inputs       - client (server) to send nick towards
566	–	*          - client to send nick for
567	–	* output       - NONE
568	–	* side effects - NICK message is sent towards given client_p
569	–	*/
570	–	void
571	–	sendnick_TS(struct Client *client_p, struct Client *target_p)
572	–	{
573	–	static char ubuf[12];
574	–
575	–	if (!IsClient(target_p))
576	–	return;
577	–
578	–	send_umode(NULL, target_p, 0, SEND_UMODES, ubuf);
579	–
580	–	if (ubuf[0] == '\0')
581	–	{
582	–	ubuf[0] = '+';
583	–	ubuf[1] = '\0';
584	–	}
585	–
586	–	if (IsCapable(client_p, CAP_SVS))
587	–	{
588	–	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
589	–	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %s :%s",
590	–	target_p->servptr->id,
591	–	target_p->name, target_p->hopcount + 1,
592	–	(unsigned long) target_p->tsinfo,
593	–	ubuf, target_p->username, target_p->host,
594	–	(MyClient(target_p) && IsIPSpoof(target_p)) ?
595	–	"0" : target_p->sockhost, target_p->id,
596	–	target_p->svid, target_p->info);
597	–	else
598	–	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s %s :%s",
599	–	target_p->name, target_p->hopcount + 1,
600	–	(unsigned long) target_p->tsinfo,
601	–	ubuf, target_p->username, target_p->host,
602	–	target_p->servptr->name, target_p->svid,
603	–	target_p->info);
604	–	}
605	–	else
606	–	{
607	–	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
608	–	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
609	–	target_p->servptr->id,
610	–	target_p->name, target_p->hopcount + 1,
611	–	(unsigned long) target_p->tsinfo,
612	–	ubuf, target_p->username, target_p->host,
613	–	(MyClient(target_p) && IsIPSpoof(target_p)) ?
614	–	"0" : target_p->sockhost, target_p->id, target_p->info);
615	–	else
616	–	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
617	–	target_p->name, target_p->hopcount + 1,
618	–	(unsigned long) target_p->tsinfo,
619	–	ubuf, target_p->username, target_p->host,
620	–	target_p->servptr->name, target_p->info);
621	–	}
622	–
623	–	if (!EmptyString(target_p->certfp))
624	–	sendto_one(client_p, ":%s CERTFP %s",
625	–	ID_or_name(target_p, client_p), target_p->certfp);
626	–
627	–	if (target_p->away[0])
628	–	sendto_one(client_p, ":%s AWAY :%s", ID_or_name(target_p, client_p),
629	–	target_p->away);
630	–
631	–	}
632	–
542		/*
543		* show_capabilities - show current server capabilities
544		*
#	Line 675 | Line 584 | make_server(struct Client *client_p)
584		return client_p->serv;
585		}
586
678	–	/* server_estab()
679	–	*
680	–	* inputs       - pointer to a struct Client
681	–	* output       -
682	–	* side effects -
683	–	*/
684	–	void
685	–	server_estab(struct Client *client_p)
686	–	{
687	–	struct Client *target_p;
688	–	struct MaskItem *conf = NULL;
689	–	char *host;
690	–	const char *inpath;
691	–	static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
692	–	dlink_node *ptr;
693	–	#ifdef HAVE_LIBCRYPTO
694	–	const COMP_METHOD *compression = NULL, *expansion = NULL;
695	–	#endif
696	–
697	–	assert(client_p != NULL);
698	–
699	–	strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip));
700	–
701	–	inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */
702	–	host   = client_p->name;
703	–
704	–	if ((conf = find_conf_name(&client_p->localClient->confs, host, CONF_SERVER))
705	–	== NULL)
706	–	{
707	–	/* This shouldn't happen, better tell the ops... -A1kmm */
708	–	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
709	–	"Warning: Lost connect{} block "
710	–	"for server %s(this shouldn't happen)!", host);
711	–	exit_client(client_p, &me, "Lost connect{} block!");
712	–	return;
713	–	}
714	–
715	–	MyFree(client_p->localClient->passwd);
716	–	client_p->localClient->passwd = NULL;
717	–
718	–	/* Its got identd, since its a server */
719	–	SetGotId(client_p);
720	–
721	–	/* If there is something in the serv_list, it might be this
722	–	* connecting server..
723	–	*/
724	–	if (!ServerInfo.hub && serv_list.head)
725	–	{
726	–	if (client_p != serv_list.head->data || serv_list.head->next)
727	–	{
728	–	++ServerStats.is_ref;
729	–	sendto_one(client_p, "ERROR :I'm a leaf not a hub");
730	–	exit_client(client_p, &me, "I'm a leaf");
731	–	return;
732	–	}
733	–	}
734	–
735	–	if (IsUnknown(client_p))
736	–	{
737	–	sendto_one(client_p, "PASS %s TS %d %s", conf->spasswd, TS_CURRENT, me.id);
738	–
739	–	send_capabilities(client_p, 0);
740	–
741	–	sendto_one(client_p, "SERVER %s 1 :%s%s",
742	–	me.name, ConfigServerHide.hidden ? "(H) " : "", me.info);
743	–	}
744	–
745	–	sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN,
746	–	(unsigned long)CurrentTime);
747	–
748	–	/* assumption here is if they passed the correct TS version, they also passed an SID */
749	–	if (IsCapable(client_p, CAP_TS6))
750	–	hash_add_id(client_p);
751	–
752	–	/* XXX Does this ever happen? I don't think so -db */
753	–	detach_conf(client_p, CONF_OPER);
754	–
755	–	/* *WARNING*
756	–	**    In the following code in place of plain server's
757	–	**    name we send what is returned by get_client_name
758	–	**    which may add the "sockhost" after the name. It's
759	–	**    *very* *important* that there is a SPACE between
760	–	**    the name and sockhost (if present). The receiving
761	–	**    server will start the information field from this
762	–	**    first blank and thus puts the sockhost into info.
763	–	**    ...a bit tricky, but you have been warned, besides
764	–	**    code is more neat this way...  --msa
765	–	*/
766	–	client_p->servptr = &me;
767	–
768	–	if (IsClosing(client_p))
769	–	return;
770	–
771	–	SetServer(client_p);
772	–
773	–	/* Update the capability combination usage counts. -A1kmm */
774	–	set_chcap_usage_counts(client_p);
775	–
776	–	/* Some day, all these lists will be consolidated *sigh* */
777	–	dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list);
778	–
779	–	assert(dlinkFind(&unknown_list, client_p));
780	–
781	–	dlink_move_node(&client_p->localClient->lclient_node,
782	–	&unknown_list, &serv_list);
783	–
784	–	Count.myserver++;
785	–
786	–	dlinkAdd(client_p, make_dlink_node(), &global_serv_list);
787	–	hash_add_client(client_p);
788	–
789	–	/* doesnt duplicate client_p->serv if allocated this struct already */
790	–	make_server(client_p);
791	–
792	–	/* fixing eob timings.. -gnp */
793	–	client_p->localClient->firsttime = CurrentTime;
794	–
795	–	if (find_matching_name_conf(CONF_SERVICE, client_p->name, NULL, NULL, 0))
796	–	AddFlag(client_p, FLAGS_SERVICE);
797	–
798	–	/* Show the real host/IP to admins */
799	–	#ifdef HAVE_LIBCRYPTO
800	–	if (client_p->localClient->fd.ssl)
801	–	{
802	–	compression = SSL_get_current_compression(client_p->localClient->fd.ssl);
803	–	expansion   = SSL_get_current_expansion(client_p->localClient->fd.ssl);
804	–
805	–	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
806	–	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
807	–	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
808	–	compression ? SSL_COMP_get_name(compression) : "NONE",
809	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
810	–	show_capabilities(client_p));
811	–	/* Now show the masked hostname/IP to opers */
812	–	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
813	–	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
814	–	inpath, ssl_get_cipher(client_p->localClient->fd.ssl),
815	–	compression ? SSL_COMP_get_name(compression) : "NONE",
816	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
817	–	show_capabilities(client_p));
818	–	ilog(LOG_TYPE_IRCD, "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
819	–	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
820	–	compression ? SSL_COMP_get_name(compression) : "NONE",
821	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
822	–	show_capabilities(client_p));
823	–	}
824	–	else
825	–	#endif
826	–	{
827	–	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
828	–	"Link with %s established: (Capabilities: %s)",
829	–	inpath_ip, show_capabilities(client_p));
830	–	/* Now show the masked hostname/IP to opers */
831	–	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
832	–	"Link with %s established: (Capabilities: %s)",
833	–	inpath, show_capabilities(client_p));
834	–	ilog(LOG_TYPE_IRCD, "Link with %s established: (Capabilities: %s)",
835	–	inpath_ip, show_capabilities(client_p));
836	–	}
837	–
838	–	fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
839	–
840	–	/* Old sendto_serv_but_one() call removed because we now
841	–	** need to send different names to different servers
842	–	** (domain name matching) Send new server to other servers.
843	–	*/
844	–	DLINK_FOREACH(ptr, serv_list.head)
845	–	{
846	–	target_p = ptr->data;
847	–
848	–	if (target_p == client_p)
849	–	continue;
850	–
851	–	if (IsCapable(target_p, CAP_TS6) && HasID(client_p))
852	–	sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
853	–	me.id, client_p->name, client_p->id,
854	–	IsHidden(client_p) ? "(H) " : "",
855	–	client_p->info);
856	–	else
857	–	sendto_one(target_p,":%s SERVER %s 2 :%s%s",
858	–	me.name, client_p->name,
859	–	IsHidden(client_p) ? "(H) " : "",
860	–	client_p->info);
861	–	}
862	–
863	–	/* Pass on my client information to the new server
864	–	**
865	–	** First, pass only servers (idea is that if the link gets
866	–	** cancelled beacause the server was already there,
867	–	** there are no NICK's to be cancelled...). Of course,
868	–	** if cancellation occurs, all this info is sent anyway,
869	–	** and I guess the link dies when a read is attempted...? --msa
870	–	**
871	–	** Note: Link cancellation to occur at this point means
872	–	** that at least two servers from my fragment are building
873	–	** up connection this other fragment at the same time, it's
874	–	** a race condition, not the normal way of operation...
875	–	**
876	–	** ALSO NOTE: using the get_client_name for server names--
877	–	**    see previous *WARNING*!!! (Also, original inpath
878	–	**    is destroyed...)
879	–	*/
880	–
881	–	DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
882	–	{
883	–	target_p = ptr->data;
884	–
885	–	/* target_p->from == target_p for target_p == client_p */
886	–	if (IsMe(target_p) || target_p->from == client_p)
887	–	continue;
888	–
889	–	if (IsCapable(client_p, CAP_TS6))
890	–	{
891	–	if (HasID(target_p))
892	–	sendto_one(client_p, ":%s SID %s %d %s :%s%s",
893	–	ID(target_p->servptr), target_p->name, target_p->hopcount+1,
894	–	target_p->id, IsHidden(target_p) ? "(H) " : "",
895	–	target_p->info);
896	–	else  /* introducing non-ts6 server */
897	–	sendto_one(client_p, ":%s SERVER %s %d :%s%s",
898	–	ID(target_p->servptr), target_p->name, target_p->hopcount+1,
899	–	IsHidden(target_p) ? "(H) " : "", target_p->info);
900	–	}
901	–	else
902	–	sendto_one(client_p, ":%s SERVER %s %d :%s%s",
903	–	target_p->servptr->name, target_p->name, target_p->hopcount+1,
904	–	IsHidden(target_p) ? "(H) " : "", target_p->info);
905	–
906	–	if (HasFlag(target_p, FLAGS_EOB))
907	–	sendto_one(client_p, ":%s EOB", ID_or_name(client_p, target_p));
908	–	}
909	–
910	–	server_burst(client_p);
911	–	}
912	–
913	–	/* server_burst()
914	–	*
915	–	* inputs       - struct Client pointer server
916	–	*              -
917	–	* output       - none
918	–	* side effects - send a server burst
919	–	* bugs         - still too long
920	–	*/
921	–	static void
922	–	server_burst(struct Client *client_p)
923	–	{
924	–	/* Send it in the shortened format with the TS, if
925	–	** it's a TS server; walk the list of channels, sending
926	–	** all the nicks that haven't been sent yet for each
927	–	** channel, then send the channel itself -- it's less
928	–	** obvious than sending all nicks first, but on the
929	–	** receiving side memory will be allocated more nicely
930	–	** saving a few seconds in the handling of a split
931	–	** -orabidoo
932	–	*/
933	–
934	–	burst_all(client_p);
935	–
936	–	/* EOB stuff is now in burst_all */
937	–	/* Always send a PING after connect burst is done */
938	–	sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
939	–	}
940	–
941	–	/* burst_all()
942	–	*
943	–	* inputs       - pointer to server to send burst to
944	–	* output       - NONE
945	–	* side effects - complete burst of channels/nicks is sent to client_p
946	–	*/
947	–	static void
948	–	burst_all(struct Client *client_p)
949	–	{
950	–	dlink_node *ptr = NULL;
951	–
952	–	DLINK_FOREACH(ptr, global_channel_list.head)
953	–	{
954	–	struct Channel *chptr = ptr->data;
955	–
956	–	if (dlink_list_length(&chptr->members) != 0)
957	–	{
958	–	burst_members(client_p, chptr);
959	–	send_channel_modes(client_p, chptr);
960	–
961	–	if (IsCapable(client_p, CAP_TBURST))
962	–	send_tb(client_p, chptr);
963	–	}
964	–	}
965	–
966	–	/* also send out those that are not on any channel
967	–	*/
968	–	DLINK_FOREACH(ptr, global_client_list.head)
969	–	{
970	–	struct Client *target_p = ptr->data;
971	–
972	–	if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p)
973	–	sendnick_TS(client_p, target_p);
974	–
975	–	DelFlag(target_p, FLAGS_BURSTED);
976	–	}
977	–
978	–	if (IsCapable(client_p, CAP_EOB))
979	–	sendto_one(client_p, ":%s EOB", ID_or_name(&me, client_p));
980	–	}
981	–
982	–	/*
983	–	* send_tb
984	–	*
985	–	* inputs       - pointer to Client
986	–	*              - pointer to channel
987	–	* output       - NONE
988	–	* side effects - Called on a server burst when
989	–	*                server is CAP_TBURST capable
990	–	*/
991	–	static void
992	–	send_tb(struct Client *client_p, struct Channel *chptr)
993	–	{
994	–	/*
995	–	* We may also send an empty topic here, but only if topic_time isn't 0,
996	–	* i.e. if we had a topic that got unset.  This is required for syncing
997	–	* topics properly.
998	–	*
999	–	* Imagine the following scenario: Our downlink introduces a channel
1000	–	* to us with a TS that is equal to ours, but the channel topic on
1001	–	* their side got unset while the servers were in splitmode, which means
1002	–	* their 'topic' is newer.  They simply wanted to unset it, so we have to
1003	–	* deal with it in a more sophisticated fashion instead of just resetting
1004	–	* it to their old topic they had before.  Read m_tburst.c:ms_tburst
1005	–	* for further information   -Michael
1006	–	*/
1007	–	if (chptr->topic_time != 0)
1008	–	sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s",
1009	–	ID_or_name(&me, client_p),
1010	–	(unsigned long)chptr->channelts, chptr->chname,
1011	–	(unsigned long)chptr->topic_time,
1012	–	chptr->topic_info,
1013	–	chptr->topic);
1014	–	}
1015	–
1016	–	/* burst_members()
1017	–	*
1018	–	* inputs       - pointer to server to send members to
1019	–	*              - dlink_list pointer to membership list to send
1020	–	* output       - NONE
1021	–	* side effects -
1022	–	*/
1023	–	static void
1024	–	burst_members(struct Client *client_p, struct Channel *chptr)
1025	–	{
1026	–	struct Client *target_p;
1027	–	struct Membership *ms;
1028	–	dlink_node *ptr;
1029	–
1030	–	DLINK_FOREACH(ptr, chptr->members.head)
1031	–	{
1032	–	ms       = ptr->data;
1033	–	target_p = ms->client_p;
1034	–
1035	–	if (!HasFlag(target_p, FLAGS_BURSTED))
1036	–	{
1037	–	AddFlag(target_p, FLAGS_BURSTED);
1038	–
1039	–	if (target_p->from != client_p)
1040	–	sendnick_TS(client_p, target_p);
1041	–	}
1042	–	}
1043	–	}
1044	–
587		/* New server connection code
588		* Based upon the stuff floating about in s_bsd.c
589		*   -- adrian
#	Line 1049 | Line 591 | burst_members(struct Client *client_p, s
591
592		/* serv_connect() - initiate a server connection
593		*
594	<	* inputs       - pointer to conf
594	>	* inputs       - pointer to conf
595		*              - pointer to client doing the connect
596		* output       -
597		* side effects -
#	Line 1066 | Line 608 | burst_members(struct Client *client_p, s
608		int
609		serv_connect(struct MaskItem *conf, struct Client *by)
610		{
611	<	struct Client *client_p;
612	<	char buf[HOSTIPLEN + 1];
611	>	struct Client *client_p = NULL;
612	>	char buf[HOSTIPLEN + 1] = "";
613
614		/* conversion structs */
615		struct sockaddr_in *v4;
1074	–	/* Make sure conf is useful */
1075	–	assert(conf != NULL);
616
617	+	/* Make sure conf is useful */
618	+	assert(conf);
619
620		getnameinfo((struct sockaddr *)&conf->addr, conf->addr.ss_len,
621		buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
#	Line 1086 | Line 628 | serv_connect(struct MaskItem *conf, stru
628		sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
629		"Error connecting to %s: DNS lookup for connect{} in progress.",
630		conf->name);
631	<	return (0);
631	>	return 0;
632		}
633
634		if (conf->dns_failed)
#	Line 1094 | Line 636 | serv_connect(struct MaskItem *conf, stru
636		sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
637		"Error connecting to %s: DNS lookup for connect{} failed.",
638		conf->name);
639	<	return (0);
639	>	return 0;
640		}
641
642		/* Make sure this server isn't already connected
643		* Note: conf should ALWAYS be a valid C: line
644		*/
645	<	if ((client_p = hash_find_server(conf->name)) != NULL)
646	<	{
645	>	if ((client_p = hash_find_server(conf->name)))
646	>	{
647		sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
648		"Server %s already present from %s",
649		conf->name, get_client_name(client_p, SHOW_IP));
#	Line 1109 | Line 651 | serv_connect(struct MaskItem *conf, stru
651		"Server %s already present from %s",
652		conf->name, get_client_name(client_p, MASK_IP));
653		if (by && IsClient(by) && !MyClient(by))
654	<	sendto_one(by, ":%s NOTICE %s :Server %s already present from %s",
655	<	me.name, by->name, conf->name,
1114	<	get_client_name(client_p, MASK_IP));
654	>	sendto_one_notice(by, &me, ":Server %s already present from %s",
655	>	conf->name, get_client_name(client_p, MASK_IP));
656		return 0;
657		}
658	<
658	>
659		/* Create a local client */
660		client_p = make_client(NULL);
661
#	Line 1125 | Line 666 | serv_connect(struct MaskItem *conf, stru
666		/* We already converted the ip once, so lets use it - stu */
667		strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
668
669	<	/* create a socket for the server connection */
670	<	if (comm_open(&client_p->localClient->fd, conf->addr.ss.ss_family,
1130	<	SOCK_STREAM, 0, NULL) < 0)
669	>	/* create a socket for the server connection */
670	>	if (comm_open(&client_p->localClient->fd, conf->addr.ss.ss_family, SOCK_STREAM, 0, NULL) < 0)
671		{
672		/* Eek, failure to create the socket */
673	<	report_error(L_ALL, "opening stream socket to %s: %s",
674	<	conf->name, errno);
673	>	report_error(L_ALL, "opening stream socket to %s: %s", conf->name, errno);
674	>
675		SetDead(client_p);
676	<	exit_client(client_p, &me, "Connection failed");
676	>	exit_client(client_p, "Connection failed");
677		return 0;
678		}
679
#	Line 1148 | Line 688 | serv_connect(struct MaskItem *conf, stru
688		sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
689		"Host %s is not enabled for connecting: no connect{} block",
690		conf->name);
691	<	if (by && IsClient(by) && !MyClient(by))
692	<	sendto_one(by, ":%s NOTICE %s :Connect to host %s failed.",
693	<	me.name, by->name, client_p->name);
691	>	if (by && IsClient(by) && !MyClient(by))
692	>	sendto_one_notice(by, &me, ":Connect to host %s failed.", client_p->name);
693	>
694		SetDead(client_p);
695	<	exit_client(client_p, client_p, "Connection failed");
695	>	exit_client(client_p, "Connection failed");
696		return 0;
697		}
698
#	Line 1171 | Line 711 | serv_connect(struct MaskItem *conf, stru
711
712		SetConnecting(client_p);
713		dlinkAdd(client_p, &client_p->node, &global_client_list);
714	<	/* from def_fam */
714	>
715		client_p->localClient->aftype = conf->aftype;
716
717		/* Now, initiate the connection */
718	<	/* XXX assume that a non 0 type means a specific bind address
718	>	/* XXX assume that a non 0 type means a specific bind address
719		* for this connect.
720		*/
721		switch (conf->aftype)
722		{
723		case AF_INET:
724		v4 = (struct sockaddr_in*)&conf->bind;
725	<	if (v4->sin_addr.s_addr != 0)
725	>	if (v4->sin_addr.s_addr)
726		{
727		struct irc_ssaddr ipn;
728		memset(&ipn, 0, sizeof(struct irc_ssaddr));
#	Line 1190 | Line 730 | serv_connect(struct MaskItem *conf, stru
730		ipn.ss_port = 0;
731		memcpy(&ipn, &conf->bind, sizeof(struct irc_ssaddr));
732		comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
733	<	(struct sockaddr *)&ipn, ipn.ss_len,
733	>	(struct sockaddr *)&ipn, ipn.ss_len,
734		serv_connect_callback, client_p, conf->aftype,
735		CONNECTTIMEOUT);
736		}
#	Line 1207 | Line 747 | serv_connect(struct MaskItem *conf, stru
747		CONNECTTIMEOUT);
748		}
749		else
750	<	comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
751	<	NULL, 0, serv_connect_callback, client_p, conf->aftype,
750	>	comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
751	>	NULL, 0, serv_connect_callback, client_p, conf->aftype,
752		CONNECTTIMEOUT);
753		break;
754		#ifdef IPV6
#	Line 1222 | Line 762 | serv_connect(struct MaskItem *conf, stru
762		v6conf = (struct sockaddr_in6 *)&conf->bind;
763		v6 = (struct sockaddr_in6 *)&ipn;
764
765	<	if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr, sizeof(struct in6_addr)) != 0)
765	>	if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr, sizeof(struct in6_addr)))
766		{
767		memcpy(&ipn, &conf->bind, sizeof(struct irc_ssaddr));
768		ipn.ss.ss_family = AF_INET6;
769		ipn.ss_port = 0;
770		comm_connect_tcp(&client_p->localClient->fd,
771		conf->host, conf->port,
772	<	(struct sockaddr *)&ipn, ipn.ss_len,
772	>	(struct sockaddr *)&ipn, ipn.ss_len,
773		serv_connect_callback, client_p,
774		conf->aftype, CONNECTTIMEOUT);
775		}
#	Line 1246 | Line 786 | serv_connect(struct MaskItem *conf, stru
786		}
787		else
788		comm_connect_tcp(&client_p->localClient->fd,
789	<	conf->host, conf->port,
789	>	conf->host, conf->port,
790		NULL, 0, serv_connect_callback, client_p,
791		conf->aftype, CONNECTTIMEOUT);
792		}
#	Line 1270 | Line 810 | finish_ssl_server_handshake(struct Clien
810		sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
811		"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
812
813	<	exit_client(client_p, &me, "Lost connect{} block");
813	>	exit_client(client_p, "Lost connect{} block");
814		return;
815		}
816
#	Line 1304 | Line 844 | finish_ssl_server_handshake(struct Clien
844		static void
845		ssl_server_handshake(fde_t *fd, struct Client *client_p)
846		{
847	<	int ret;
848	<	int err;
1309	<
1310	<	ret = SSL_connect(client_p->localClient->fd.ssl);
847	>	X509 *cert = NULL;
848	>	int ret = 0;
849
850	<	if (ret <= 0)
850	>	if ((ret = SSL_connect(client_p->localClient->fd.ssl)) <= 0)
851		{
852	<	switch ((err = SSL_get_error(client_p->localClient->fd.ssl, ret)))
852	>	switch (SSL_get_error(client_p->localClient->fd.ssl, ret))
853		{
854		case SSL_ERROR_WANT_WRITE:
855		comm_setselect(&client_p->localClient->fd, COMM_SELECT_WRITE,
#	Line 1327 | Line 865 | ssl_server_handshake(fde_t *fd, struct C
865		sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
866		"Error connecting to %s: %s", client_p->name,
867		sslerr ? sslerr : "unknown SSL error");
868	<	exit_client(client_p, client_p, "Error during SSL handshake");
868	>	exit_client(client_p, "Error during SSL handshake");
869		return;
870		}
871		}
872		}
873
874	+	if ((cert = SSL_get_peer_certificate(client_p->localClient->fd.ssl)))
875	+	{
876	+	int res = SSL_get_verify_result(client_p->localClient->fd.ssl);
877	+	char buf[EVP_MAX_MD_SIZE * 2 + 1] = { '\0' };
878	+	unsigned char md[EVP_MAX_MD_SIZE] = { '\0' };
879	+
880	+	if (res == X509_V_OK || res == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN ||
881	+	res == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE ||
882	+	res == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
883	+	{
884	+	unsigned int i = 0, n = 0;
885	+
886	+	if (X509_digest(cert, EVP_sha256(), md, &n))
887	+	{
888	+	for (; i < n; ++i)
889	+	snprintf(buf + 2 * i, 3, "%02X", md[i]);
890	+	client_p->certfp = xstrdup(buf);
891	+	}
892	+	}
893	+	else
894	+	ilog(LOG_TYPE_IRCD, "Server %s!%s@%s gave bad SSL client certificate: %d",
895	+	client_p->name, client_p->username, client_p->host, res);
896	+	X509_free(cert);
897	+	}
898	+
899		finish_ssl_server_handshake(client_p);
900		}
901
#	Line 1344 | Line 907 | ssl_connect_init(struct Client *client_p
907		ilog(LOG_TYPE_IRCD, "SSL_new() ERROR! -- %s",
908		ERR_error_string(ERR_get_error(), NULL));
909		SetDead(client_p);
910	<	exit_client(client_p, client_p, "SSL_new failed");
910	>	exit_client(client_p, "SSL_new failed");
911		return;
912		}
913
#	Line 1358 | Line 921 | ssl_connect_init(struct Client *client_p
921		#endif
922
923		/* serv_connect_callback() - complete a server connection.
924	<	*
924	>	*
925		* This routine is called after the server connection attempt has
926		* completed. If unsucessful, an error is sent to ops and the client
927		* is closed. If sucessful, it goes through the initialisation/check
#	Line 1372 | Line 935 | serv_connect_callback(fde_t *fd, int sta
935		struct MaskItem *conf = NULL;
936
937		/* First, make sure its a real client! */
938	<	assert(client_p != NULL);
938	>	assert(client_p);
939		assert(&client_p->localClient->fd == fd);
940
941		/* Next, for backward purposes, record the ip of the server */
942		memcpy(&client_p->localClient->ip, &fd->connect.hostaddr,
943		sizeof(struct irc_ssaddr));
944	+
945		/* Check the status */
946		if (status != COMM_OK)
947		{
#	Line 1415 | Line 979 | serv_connect_callback(fde_t *fd, int sta
979		sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
980		"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
981
982	<	exit_client(client_p, &me, "Lost connect{} block");
982	>	exit_client(client_p, "Lost connect{} block");
983		return;
984		}
985
#	Line 1440 | Line 1004 | serv_connect_callback(fde_t *fd, int sta
1004		/* If we've been marked dead because a send failed, just exit
1005		* here now and save everyone the trouble of us ever existing.
1006		*/
1007	<	if (IsDead(client_p))
1007	>	if (IsDead(client_p))
1008		{
1009		sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
1010		"%s[%s] went dead during handshake",
#	Line 1470 | Line 1034 | find_servconn_in_progress(const char *na
1034		if (!match(name, cptr->name))
1035		return cptr;
1036		}
1037	<
1037	>
1038		return NULL;
1039		}

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