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root/svn/ircd-hybrid/trunk/src/server.c

Comparing ircd-hybrid/trunk/src/s_serv.c (file contents):
Revision 3246 by michael, Sun Mar 30 17:37:13 2014 UTC vs.
Revision 3303 by michael, Sun Apr 13 11:19:36 2014 UTC

#	Line 30 | Line 30
30		#include "rsa.h"
31		#endif
32		#include "list.h"
33	–	#include "channel.h"
34	–	#include "channel_mode.h"
33		#include "client.h"
34		#include "event.h"
37	–	#include "fdlist.h"
35		#include "hash.h"
36		#include "irc_string.h"
37		#include "ircd.h"
#	Line 42 | Line 39
39		#include "s_bsd.h"
40		#include "numeric.h"
41		#include "packet.h"
45	–	#include "irc_res.h"
42		#include "conf.h"
43		#include "s_serv.h"
44		#include "log.h"
#	Line 57 | Line 53
53
54		dlink_list flatten_links;
55		static dlink_list cap_list = { NULL, NULL, 0 };
60	–	static void server_burst(struct Client *);
61	–	static void burst_all(struct Client *);
62	–	static void send_tb(struct Client *client_p, struct Channel *chptr);
63	–
56		static CNCB serv_connect_callback;
57
66	–	static void burst_members(struct Client *, struct Channel *);
58
59		/*
60		* write_links_file
#	Line 552 | Line 543 | send_capabilities(struct Client *client_
543		sendto_one(client_p, "CAPAB :%s", msgbuf);
544		}
545
555	–	/* sendnick_TS()
556	–	*
557	–	* inputs       - client (server) to send nick towards
558	–	*          - client to send nick for
559	–	* output       - NONE
560	–	* side effects - NICK message is sent towards given client_p
561	–	*/
562	–	void
563	–	sendnick_TS(struct Client *client_p, struct Client *target_p)
564	–	{
565	–	char ubuf[IRCD_BUFSIZE] = "";
566	–
567	–	if (!IsClient(target_p))
568	–	return;
569	–
570	–	send_umode(NULL, target_p, 0, SEND_UMODES, ubuf);
571	–
572	–	if (ubuf[0] == '\0')
573	–	{
574	–	ubuf[0] = '+';
575	–	ubuf[1] = '\0';
576	–	}
577	–
578	–	if (IsCapable(client_p, CAP_SVS))
579	–	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %s :%s",
580	–	target_p->servptr->id,
581	–	target_p->name, target_p->hopcount + 1,
582	–	(unsigned long) target_p->tsinfo,
583	–	ubuf, target_p->username, target_p->host,
584	–	(MyClient(target_p) && IsIPSpoof(target_p)) ?
585	–	"0" : target_p->sockhost, target_p->id,
586	–	target_p->svid, target_p->info);
587	–	else
588	–	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
589	–	target_p->servptr->id,
590	–	target_p->name, target_p->hopcount + 1,
591	–	(unsigned long) target_p->tsinfo,
592	–	ubuf, target_p->username, target_p->host,
593	–	(MyClient(target_p) && IsIPSpoof(target_p)) ?
594	–	"0" : target_p->sockhost, target_p->id, target_p->info);
595	–
596	–	if (!EmptyString(target_p->certfp))
597	–	sendto_one(client_p, ":%s CERTFP %s", target_p->id, target_p->certfp);
598	–
599	–	if (target_p->away[0])
600	–	sendto_one(client_p, ":%s AWAY :%s", target_p->id, target_p->away);
601	–
602	–	}
603	–
546		/*
547		* show_capabilities - show current server capabilities
548		*
#	Line 646 | Line 588 | make_server(struct Client *client_p)
588		return client_p->serv;
589		}
590
649	–	/* server_estab()
650	–	*
651	–	* inputs       - pointer to a struct Client
652	–	* output       -
653	–	* side effects -
654	–	*/
655	–	void
656	–	server_estab(struct Client *client_p)
657	–	{
658	–	struct MaskItem *conf = NULL;
659	–	char *host;
660	–	const char *inpath;
661	–	static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
662	–	dlink_node *ptr;
663	–	#ifdef HAVE_LIBCRYPTO
664	–	const COMP_METHOD *compression = NULL, *expansion = NULL;
665	–	#endif
666	–
667	–	assert(client_p);
668	–
669	–	strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip));
670	–
671	–	inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */
672	–	host   = client_p->name;
673	–
674	–	if ((conf = find_conf_name(&client_p->localClient->confs, host, CONF_SERVER))
675	–	== NULL)
676	–	{
677	–	/* This shouldn't happen, better tell the ops... -A1kmm */
678	–	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
679	–	"Warning: Lost connect{} block "
680	–	"for server %s(this shouldn't happen)!", host);
681	–	exit_client(client_p, "Lost connect{} block!");
682	–	return;
683	–	}
684	–
685	–	MyFree(client_p->localClient->passwd);
686	–	client_p->localClient->passwd = NULL;
687	–
688	–	/* Its got identd, since its a server */
689	–	SetGotId(client_p);
690	–
691	–	/* If there is something in the serv_list, it might be this
692	–	* connecting server..
693	–	*/
694	–	if (!ServerInfo.hub && serv_list.head)
695	–	{
696	–	if (client_p != serv_list.head->data || serv_list.head->next)
697	–	{
698	–	++ServerStats.is_ref;
699	–	sendto_one(client_p, "ERROR :I'm a leaf not a hub");
700	–	exit_client(client_p, "I'm a leaf");
701	–	return;
702	–	}
703	–	}
704	–
705	–	if (IsUnknown(client_p))
706	–	{
707	–	sendto_one(client_p, "PASS %s TS %d %s", conf->spasswd, TS_CURRENT, me.id);
708	–
709	–	send_capabilities(client_p, 0);
710	–
711	–	sendto_one(client_p, "SERVER %s 1 :%s%s",
712	–	me.name, ConfigServerHide.hidden ? "(H) " : "", me.info);
713	–	}
714	–
715	–	sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN,
716	–	(unsigned long)CurrentTime);
717	–
718	–	/* XXX Does this ever happen? I don't think so -db */
719	–	detach_conf(client_p, CONF_OPER);
720	–
721	–	/* *WARNING*
722	–	**    In the following code in place of plain server's
723	–	**    name we send what is returned by get_client_name
724	–	**    which may add the "sockhost" after the name. It's
725	–	**    *very* *important* that there is a SPACE between
726	–	**    the name and sockhost (if present). The receiving
727	–	**    server will start the information field from this
728	–	**    first blank and thus puts the sockhost into info.
729	–	**    ...a bit tricky, but you have been warned, besides
730	–	**    code is more neat this way...  --msa
731	–	*/
732	–	client_p->servptr = &me;
733	–
734	–	if (IsClosing(client_p))
735	–	return;
736	–
737	–	SetServer(client_p);
738	–
739	–	/* Some day, all these lists will be consolidated *sigh* */
740	–	dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list);
741	–
742	–	assert(dlinkFind(&unknown_list, client_p));
743	–
744	–	dlink_move_node(&client_p->localClient->lclient_node,
745	–	&unknown_list, &serv_list);
746	–
747	–	Count.myserver++;
748	–
749	–	dlinkAdd(client_p, make_dlink_node(), &global_serv_list);
750	–	hash_add_client(client_p);
751	–	hash_add_id(client_p);
752	–
753	–	/* doesnt duplicate client_p->serv if allocated this struct already */
754	–	make_server(client_p);
755	–
756	–	/* fixing eob timings.. -gnp */
757	–	client_p->localClient->firsttime = CurrentTime;
758	–
759	–	if (find_matching_name_conf(CONF_SERVICE, client_p->name, NULL, NULL, 0))
760	–	AddFlag(client_p, FLAGS_SERVICE);
761	–
762	–	/* Show the real host/IP to admins */
763	–	#ifdef HAVE_LIBCRYPTO
764	–	if (client_p->localClient->fd.ssl)
765	–	{
766	–	compression = SSL_get_current_compression(client_p->localClient->fd.ssl);
767	–	expansion   = SSL_get_current_expansion(client_p->localClient->fd.ssl);
768	–
769	–	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
770	–	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
771	–	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
772	–	compression ? SSL_COMP_get_name(compression) : "NONE",
773	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
774	–	show_capabilities(client_p));
775	–	/* Now show the masked hostname/IP to opers */
776	–	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
777	–	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
778	–	inpath, ssl_get_cipher(client_p->localClient->fd.ssl),
779	–	compression ? SSL_COMP_get_name(compression) : "NONE",
780	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
781	–	show_capabilities(client_p));
782	–	ilog(LOG_TYPE_IRCD, "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
783	–	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
784	–	compression ? SSL_COMP_get_name(compression) : "NONE",
785	–	expansion ? SSL_COMP_get_name(expansion) : "NONE",
786	–	show_capabilities(client_p));
787	–	}
788	–	else
789	–	#endif
790	–	{
791	–	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
792	–	"Link with %s established: (Capabilities: %s)",
793	–	inpath_ip, show_capabilities(client_p));
794	–	/* Now show the masked hostname/IP to opers */
795	–	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
796	–	"Link with %s established: (Capabilities: %s)",
797	–	inpath, show_capabilities(client_p));
798	–	ilog(LOG_TYPE_IRCD, "Link with %s established: (Capabilities: %s)",
799	–	inpath_ip, show_capabilities(client_p));
800	–	}
801	–
802	–	fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
803	–
804	–	sendto_server(client_p, NOCAPS, NOCAPS, ":%s SID %s 2 %s :%s%s",
805	–	me.id, client_p->name, client_p->id,
806	–	IsHidden(client_p) ? "(H) " : "", client_p->info);
807	–
808	–	/*
809	–	* Pass on my client information to the new server
810	–	*
811	–	* First, pass only servers (idea is that if the link gets
812	–	* cancelled beacause the server was already there,
813	–	* there are no NICK's to be cancelled...). Of course,
814	–	* if cancellation occurs, all this info is sent anyway,
815	–	* and I guess the link dies when a read is attempted...? --msa
816	–	*
817	–	* Note: Link cancellation to occur at this point means
818	–	* that at least two servers from my fragment are building
819	–	* up connection this other fragment at the same time, it's
820	–	* a race condition, not the normal way of operation...
821	–	*
822	–	* ALSO NOTE: using the get_client_name for server names--
823	–	*    see previous *WARNING*!!! (Also, original inpath
824	–	*    is destroyed...)
825	–	*/
826	–
827	–	DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
828	–	{
829	–	struct Client *target_p = ptr->data;
830	–
831	–	/* target_p->from == target_p for target_p == client_p */
832	–	if (IsMe(target_p) || target_p->from == client_p)
833	–	continue;
834	–
835	–	sendto_one(client_p, ":%s SID %s %d %s :%s%s",
836	–	target_p->servptr->id, target_p->name, target_p->hopcount+1,
837	–	target_p->id, IsHidden(target_p) ? "(H) " : "",
838	–	target_p->info);
839	–
840	–	if (HasFlag(target_p, FLAGS_EOB))
841	–	sendto_one(client_p, ":%s EOB", target_p->id, client_p);
842	–	}
843	–
844	–	server_burst(client_p);
845	–	}
846	–
847	–	/* server_burst()
848	–	*
849	–	* inputs       - struct Client pointer server
850	–	*              -
851	–	* output       - none
852	–	* side effects - send a server burst
853	–	* bugs         - still too long
854	–	*/
855	–	static void
856	–	server_burst(struct Client *client_p)
857	–	{
858	–	/* Send it in the shortened format with the TS, if
859	–	** it's a TS server; walk the list of channels, sending
860	–	** all the nicks that haven't been sent yet for each
861	–	** channel, then send the channel itself -- it's less
862	–	** obvious than sending all nicks first, but on the
863	–	** receiving side memory will be allocated more nicely
864	–	** saving a few seconds in the handling of a split
865	–	** -orabidoo
866	–	*/
867	–
868	–	burst_all(client_p);
869	–
870	–	/* EOB stuff is now in burst_all */
871	–	/* Always send a PING after connect burst is done */
872	–	sendto_one(client_p, "PING :%s", me.id);
873	–	}
874	–
875	–	/* burst_all()
876	–	*
877	–	* inputs       - pointer to server to send burst to
878	–	* output       - NONE
879	–	* side effects - complete burst of channels/nicks is sent to client_p
880	–	*/
881	–	static void
882	–	burst_all(struct Client *client_p)
883	–	{
884	–	dlink_node *ptr = NULL;
885	–
886	–	DLINK_FOREACH(ptr, global_channel_list.head)
887	–	{
888	–	struct Channel *chptr = ptr->data;
889	–
890	–	if (dlink_list_length(&chptr->members))
891	–	{
892	–	burst_members(client_p, chptr);
893	–	send_channel_modes(client_p, chptr);
894	–
895	–	if (IsCapable(client_p, CAP_TBURST))
896	–	send_tb(client_p, chptr);
897	–	}
898	–	}
899	–
900	–	/* also send out those that are not on any channel
901	–	*/
902	–	DLINK_FOREACH(ptr, global_client_list.head)
903	–	{
904	–	struct Client *target_p = ptr->data;
905	–
906	–	if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p)
907	–	sendnick_TS(client_p, target_p);
908	–
909	–	DelFlag(target_p, FLAGS_BURSTED);
910	–	}
911	–
912	–	if (IsCapable(client_p, CAP_EOB))
913	–	sendto_one(client_p, ":%s EOB", me.id);
914	–	}
915	–
916	–	/*
917	–	* send_tb
918	–	*
919	–	* inputs       - pointer to Client
920	–	*              - pointer to channel
921	–	* output       - NONE
922	–	* side effects - Called on a server burst when
923	–	*                server is CAP_TBURST capable
924	–	*/
925	–	static void
926	–	send_tb(struct Client *client_p, struct Channel *chptr)
927	–	{
928	–	/*
929	–	* We may also send an empty topic here, but only if topic_time isn't 0,
930	–	* i.e. if we had a topic that got unset.  This is required for syncing
931	–	* topics properly.
932	–	*
933	–	* Imagine the following scenario: Our downlink introduces a channel
934	–	* to us with a TS that is equal to ours, but the channel topic on
935	–	* their side got unset while the servers were in splitmode, which means
936	–	* their 'topic' is newer.  They simply wanted to unset it, so we have to
937	–	* deal with it in a more sophisticated fashion instead of just resetting
938	–	* it to their old topic they had before.  Read m_tburst.c:ms_tburst
939	–	* for further information   -Michael
940	–	*/
941	–	if (chptr->topic_time)
942	–	sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s", me.id,
943	–	(unsigned long)chptr->channelts, chptr->chname,
944	–	(unsigned long)chptr->topic_time,
945	–	chptr->topic_info,
946	–	chptr->topic);
947	–	}
948	–
949	–	/* burst_members()
950	–	*
951	–	* inputs       - pointer to server to send members to
952	–	*              - dlink_list pointer to membership list to send
953	–	* output       - NONE
954	–	* side effects -
955	–	*/
956	–	static void
957	–	burst_members(struct Client *client_p, struct Channel *chptr)
958	–	{
959	–	struct Client *target_p;
960	–	struct Membership *ms;
961	–	dlink_node *ptr;
962	–
963	–	DLINK_FOREACH(ptr, chptr->members.head)
964	–	{
965	–	ms       = ptr->data;
966	–	target_p = ms->client_p;
967	–
968	–	if (!HasFlag(target_p, FLAGS_BURSTED))
969	–	{
970	–	AddFlag(target_p, FLAGS_BURSTED);
971	–
972	–	if (target_p->from != client_p)
973	–	sendnick_TS(client_p, target_p);
974	–	}
975	–	}
976	–	}
977	–
591		/* New server connection code
592		* Based upon the stuff floating about in s_bsd.c
593		*   -- adrian

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