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

Comparing ircd-hybrid/trunk/src/user.c (file contents):
Revision 5809 by michael, Wed Apr 22 20:28:18 2015 UTC vs.
Revision 7049 by michael, Sun Jan 10 12:41:01 2016 UTC

#	Line 1 | Line 1
1		/*
2		*  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3		*
4	<	*  Copyright (c) 1997-2015 ircd-hybrid development team
4	>	*  Copyright (c) 1997-2016 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 31 | Line 31
31		#include "channel_mode.h"
32		#include "client.h"
33		#include "hash.h"
34	+	#include "id.h"
35		#include "irc_string.h"
36		#include "ircd.h"
37		#include "listener.h"
#	Line 47 | Line 48
48		#include "misc.h"
49		#include "parse.h"
50		#include "watch.h"
51	+	#include "isupport.h"
52
53		static char umode_buffer[IRCD_BUFSIZE];
52	–	static const char *uid_get(void);
53	–
54	–	/* Used for building up the isupport string,
55	–	* used with init_isupport, add_isupport, delete_isupport
56	–	*/
57	–	struct Isupport
58	–	{
59	–	dlink_node node;
60	–	char *name;
61	–	char *options;
62	–	int number;
63	–	};
64	–
65	–	static dlink_list support_list;
66	–	static dlink_list support_list_lines;
54
55		const struct user_modes *umode_map[256];
56		const struct user_modes  umode_tab[] =
#	Line 100 | Line 87 | const struct user_modes  umode_tab[] =
87		};
88
89		void
90	<	user_usermodes_init(void)
90	>	user_modes_init(void)
91		{
92		char *umode_buffer_ptr = umode_buffer;
93
#	Line 162 | Line 149 | show_lusers(struct Client *source_p)
149		Count.max_loc_con = Count.local + Count.myserver;
150		}
151
165	–	/* show_isupport()
166	–	*
167	–	* inputs       - pointer to client
168	–	* output       - NONE
169	–	* side effects - display to client what we support (for them)
170	–	*/
171	–	void
172	–	show_isupport(struct Client *source_p)
173	–	{
174	–	const dlink_node *node = NULL;
175	–
176	–	DLINK_FOREACH(node, support_list_lines.head)
177	–	sendto_one_numeric(source_p, &me, RPL_ISUPPORT, node->data);
178	–	}
179	–
180	–
152		/* report_and_set_user_flags()
153		*
154		* inputs       - pointer to source_p
#	Line 191 | Line 162 | report_and_set_user_flags(struct Client
162		{
163		/* If this user is being spoofed, tell them so */
164		if (IsConfDoSpoofIp(conf))
165	<	sendto_one_notice(source_p, &me, ":*** Spoofing your IP. Congrats.");
165	>	sendto_one_notice(source_p, &me, ":*** Spoofing your IP");
166
167		/* If this user is in the exception class, set it "E lined" */
168		if (IsConfExemptKline(conf))
169		{
170	<	SetExemptKline(source_p);
171	<	sendto_one_notice(source_p, &me, ":*** You are exempt from K/D lines. Congrats.");
170	>	AddFlag(source_p, FLAGS_EXEMPTKLINE);
171	>	sendto_one_notice(source_p, &me, ":*** You are exempt from K/D lines");
172	>	}
173	>
174	>	if (IsConfExemptXline(conf))
175	>	{
176	>	AddFlag(source_p, FLAGS_EXEMPTXLINE);
177	>	sendto_one_notice(source_p, &me, ":*** You are exempt from X lines");
178		}
179
180		if (IsConfExemptResv(conf))
181		{
182	<	SetExemptResv(source_p);
183	<	sendto_one_notice(source_p, &me, ":*** You are exempt from resvs. Congrats.");
182	>	AddFlag(source_p, FLAGS_EXEMPTRESV);
183	>	sendto_one_notice(source_p, &me, ":*** You are exempt from resvs");
184		}
185
186		/* If this user is exempt from user limits set it "F lined" */
187		if (IsConfExemptLimits(conf))
188		{
189	<	SetExemptLimits(source_p);
190	<	sendto_one_notice(source_p, &me, ":*** You are exempt from user limits. Congrats.");
189	>	AddFlag(source_p, FLAGS_NOLIMIT);
190	>	sendto_one_notice(source_p, &me, ":*** You are exempt from user limits");
191		}
192
193		if (IsConfCanFlood(conf))
194		{
195	<	SetCanFlood(source_p);
196	<	sendto_one_notice(source_p, &me, ":*** You are exempt from flood "
220	<	"protection, aren't you fearsome.");
195	>	AddFlag(source_p, FLAGS_CANFLOOD);
196	>	sendto_one_notice(source_p, &me, ":*** You are exempt from flood protection");
197		}
198		}
199
#	Line 235 | Line 211 | introduce_client(struct Client *source_p
211		dlink_node *node = NULL;
212		char ubuf[IRCD_BUFSIZE] = "";
213
214	<	if (MyClient(source_p))
214	>	if (MyConnect(source_p))
215		send_umode(source_p, source_p, 0, ubuf);
216		else
217		send_umode(NULL, source_p, 0, ubuf);
#	Line 255 | Line 231 | introduce_client(struct Client *source_p
231		if (server == source_p->from)
232		continue;
233
234	<	if (IsCapable(server, CAP_SVS))
235	<	sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s %s :%s",
236	<	source_p->servptr->id,
237	<	source_p->name, source_p->hopcount+1,
238	<	(unsigned long)source_p->tsinfo,
239	<	ubuf, source_p->username, source_p->host,
240	<	source_p->sockhost, source_p->id,
241	<	source_p->account,
266	<	source_p->info);
267	<	else
268	<	sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s :%s",
269	<	source_p->servptr->id,
270	<	source_p->name, source_p->hopcount+1,
271	<	(unsigned long)source_p->tsinfo,
272	<	ubuf, source_p->username, source_p->host,
273	<	source_p->sockhost, source_p->id, source_p->info);
234	>	sendto_one(server, ":%s UID %s %u %ju %s %s %s %s %s %s :%s",
235	>	source_p->servptr->id,
236	>	source_p->name, source_p->hopcount+1,
237	>	source_p->tsinfo,
238	>	ubuf, source_p->username, source_p->host,
239	>	source_p->sockhost, source_p->id,
240	>	source_p->account,
241	>	source_p->info);
242
243		if (!EmptyString(source_p->certfp))
244		sendto_one(server, ":%s CERTFP %s", source_p->id, source_p->certfp);
#	Line 286 | Line 254 | introduce_client(struct Client *source_p
254		static void
255		user_welcome(struct Client *source_p)
256		{
289	–	#if defined(__TIME__) && defined(__DATE__)
257		static const char built_date[] = __DATE__ " at " __TIME__;
291	–	#else
292	–	static const char built_date[] = "unknown";
293	–	#endif
258
259		#ifdef HAVE_LIBCRYPTO
260		if (HasFlag(source_p, FLAGS_SSL))
#	Line 304 | Line 268 | user_welcome(struct Client *source_p)
268		sendto_one_numeric(source_p, &me, RPL_WELCOME, ConfigServerInfo.network_name,
269		source_p->name);
270		sendto_one_numeric(source_p, &me, RPL_YOURHOST,
271	<	get_listener_name(source_p->connection->listener), ircd_version);
271	>	listener_get_name(source_p->connection->listener), ircd_version);
272		sendto_one_numeric(source_p, &me, RPL_CREATED, built_date);
273		sendto_one_numeric(source_p, &me, RPL_MYINFO, me.name, ircd_version, umode_buffer);
310	–	show_isupport(source_p);
311	–	sendto_one_numeric(source_p, &me, RPL_YOURID, source_p->id);
274
275	+	isupport_show(source_p);
276		show_lusers(source_p);
277		motd_signon(source_p);
278		}
#	Line 325 | Line 288 | check_xline(struct Client *source_p)
288		{
289		struct MaskItem *conf = NULL;
290
291	+	if (HasFlag(source_p, FLAGS_EXEMPTXLINE))
292	+	return 0;
293	+
294		if ((conf = find_matching_name_conf(CONF_XLINE, source_p->info, NULL, NULL, 0)))
295		{
296		++conf->count;
#	Line 360 | Line 326 | register_local_user(struct Client *sourc
326
327		if (ConfigGeneral.ping_cookie)
328		{
329	<	if (!IsPingSent(source_p) && !source_p->connection->random_ping)
329	>	if (!HasFlag(source_p, FLAGS_PINGSENT) && !source_p->connection->random_ping)
330		{
331		do
332		source_p->connection->random_ping = genrand_int32();
333		while (!source_p->connection->random_ping);
334
335		sendto_one(source_p, "PING :%u", source_p->connection->random_ping);
336	<	SetPingSent(source_p);
336	>	AddFlag(source_p, FLAGS_PINGSENT);
337		return;
338		}
339
340	<	if (!HasPingCookie(source_p))
340	>	if (!HasFlag(source_p, FLAGS_PING_COOKIE))
341		return;
342		}
343
#	Line 391 | Line 357 | register_local_user(struct Client *sourc
357
358		conf = source_p->connection->confs.head->data;
359
360	<	if (!IsGotId(source_p))
360	>	if (!HasFlag(source_p, FLAGS_GOTID))
361		{
362		char username[USERLEN + 1] = "";
397	–	const char *p = username;
363		unsigned int i = 0;
364
365		if (IsNeedIdentd(conf))
#	Line 411 | Line 376 | register_local_user(struct Client *sourc
376		if (!IsNoTilde(conf))
377		source_p->username[i++] = '~';
378
379	<	for (; *p && i < USERLEN; ++p)
379	>	for (const char *p = username; *p && i < USERLEN; ++p)
380		source_p->username[i++] = *p;
381
382		source_p->username[i] = '\0';
#	Line 453 | Line 418 | register_local_user(struct Client *sourc
418		*   -Taner
419		*/
420		if ((Count.local >= GlobalSetOptions.maxclients + MAX_BUFFER) ||
421	<	(Count.local >= GlobalSetOptions.maxclients && !IsExemptLimits(source_p)))
421	>	(Count.local >= GlobalSetOptions.maxclients && !HasFlag(source_p, FLAGS_NOLIMIT)))
422		{
423		sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE,
424		"Too many clients, rejecting %s[%s].",
#	Line 503 | Line 468 | register_local_user(struct Client *sourc
468		Count.max_loc = Count.local;
469
470		if (!(Count.max_loc % 10))
471	<	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
471	>	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
472		"New maximum local client connections: %u",
473		Count.max_loc);
474		}
#	Line 523 | Line 488 | register_local_user(struct Client *sourc
488		&unknown_list, &local_client_list);
489
490		user_welcome(source_p);
491	<	add_user_host(source_p->username, source_p->host, 0);
492	<	SetUserHost(source_p);
491	>	userhost_add(source_p->username, source_p->host, 0);
492	>	AddFlag(source_p, FLAGS_USERHOST);
493
494		introduce_client(source_p);
495		}
#	Line 574 | Line 539 | register_remote_user(struct Client *sour
539		SetClient(source_p);
540		dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list);
541		dlinkAdd(source_p, &source_p->node, &global_client_list);
542	<	add_user_host(source_p->username, source_p->host, 1);
543	<	SetUserHost(source_p);
542	>	userhost_add(source_p->username, source_p->host, 1);
543	>	AddFlag(source_p, FLAGS_USERHOST);
544
545		if (HasFlag(source_p->servptr, FLAGS_EOB))
546		sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
#	Line 627 | Line 592 | valid_hostname(const char *hostname)
592		int
593		valid_username(const char *username, const int local)
594		{
630	–	unsigned int dots = 0;
595		const char *p = username;
596
597		assert(p);
#	Line 645 | Line 609 | valid_username(const char *username, con
609
610		if (local)
611		{
612	+	unsigned int dots = 0;
613	+
614		while (*++p)
615		{
616		if (*p == '.' && ConfigGeneral.dots_in_ident)
#	Line 702 | Line 668 | valid_nickname(const char *nickname, con
668		* inputs       - client_p
669		*              - source_p
670		*              - int old
705	–	*              - sendmask mask of modes to send
671		*              - suplied umode_buf
672		* output       - NONE
673		*/
#	Line 789 | Line 754 | user_set_hostmask(struct Client *target_
754		}
755
756		if (ConfigGeneral.cycle_on_host_change)
757	<	sendto_common_channels_local(target_p, 0, 0, ":%s!%s@%s QUIT :Changing hostname",
757	>	sendto_common_channels_local(target_p, 0, 0, CAP_CHGHOST, ":%s!%s@%s QUIT :Changing hostname",
758		target_p->name, target_p->username, target_p->host);
759
760	<	if (IsUserHostIp(target_p))
761	<	delete_user_host(target_p->username, target_p->host, !MyConnect(target_p));
760	>	sendto_common_channels_local(target_p, 0, CAP_CHGHOST, 0, ":%s!%s@%s CHGHOST %s %s",
761	>	target_p->name, target_p->username,
762	>	target_p->host, target_p->username, hostname);
763	>
764	>	if (HasFlag(target_p, FLAGS_USERHOST))
765	>	userhost_del(target_p->username, target_p->host, !MyConnect(target_p));
766
767		strlcpy(target_p->host, hostname, sizeof(target_p->host));
768
769	<	add_user_host(target_p->username, target_p->host, !MyConnect(target_p));
770	<	SetUserHost(target_p);
769	>	userhost_add(target_p->username, target_p->host, !MyConnect(target_p));
770	>	AddFlag(target_p, FLAGS_USERHOST);
771
772	<	if (MyClient(target_p))
772	>	if (MyConnect(target_p))
773		{
774		sendto_one_numeric(target_p, &me, RPL_VISIBLEHOST, target_p->host);
775		clear_ban_cache_client(target_p);
#	Line 811 | Line 780 | user_set_hostmask(struct Client *target_
780
781		DLINK_FOREACH(node, target_p->channel.head)
782		{
783	<	char modebuf[4], nickbuf[NICKLEN * 3 + 3] = "";
783	>	char modebuf[CMEMBER_STATUS_FLAGS_LEN + 1];
784	>	char nickbuf[CMEMBER_STATUS_FLAGS_LEN * NICKLEN + CMEMBER_STATUS_FLAGS_LEN] = "";
785		char *p = modebuf;
786		int len = 0;
787		const struct Membership *member = node->data;
#	Line 836 | Line 806 | user_set_hostmask(struct Client *target_
806
807		*p = '\0';
808
809	<
810	<	sendto_channel_local_butone(target_p, CAP_EXTENDED_JOIN, 0, member->chptr, ":%s!%s@%s JOIN %s %s :%s",
811	<	target_p->name, target_p->username,
812	<	target_p->host, member->chptr->name,
813	<	(!IsDigit(target_p->account[0]) && target_p->account[0] != '*') ? target_p->account : "*",
814	<	target_p->info);
815	<	sendto_channel_local_butone(target_p, 0, CAP_EXTENDED_JOIN, member->chptr, ":%s!%s@%s JOIN :%s",
846	<	target_p->name, target_p->username,
847	<	target_p->host, member->chptr->name);
809	>	sendto_channel_local(target_p, member->chptr, 0, CAP_EXTENDED_JOIN, CAP_CHGHOST, ":%s!%s@%s JOIN %s %s :%s",
810	>	target_p->name, target_p->username,
811	>	target_p->host, member->chptr->name,
812	>	target_p->account, target_p->info);
813	>	sendto_channel_local(target_p, member->chptr, 0, 0, CAP_EXTENDED_JOIN | CAP_CHGHOST, ":%s!%s@%s JOIN :%s",
814	>	target_p->name, target_p->username,
815	>	target_p->host, member->chptr->name);
816
817		if (nickbuf[0])
818	<	sendto_channel_local_butone(target_p, 0, 0, member->chptr, ":%s MODE %s +%s %s",
819	<	target_p->servptr->name, member->chptr->name,
820	<	modebuf, nickbuf);
853	<
818	>	sendto_channel_local(target_p, member->chptr, 0, 0, CAP_CHGHOST, ":%s MODE %s +%s %s",
819	>	target_p->servptr->name, member->chptr->name,
820	>	modebuf, nickbuf);
821		}
822
823		if (target_p->away[0])
824	<	sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY,
824	>	sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY, CAP_CHGHOST,
825		":%s!%s@%s AWAY :%s",
826		target_p->name, target_p->username,
827		target_p->host, target_p->away);
828		}
862	–
863	–	/*! \brief Blindly opers up given source_p, using conf info.
864	–	*         All checks on passwords have already been done.
865	–	* \param source_p Pointer to given client to oper
866	–	*/
867	–	void
868	–	oper_up(struct Client *source_p)
869	–	{
870	–	const unsigned int old = source_p->umodes;
871	–	const struct MaskItem *const conf = source_p->connection->confs.head->data;
872	–
873	–	assert(source_p->connection->confs.head);
874	–
875	–	++Count.oper;
876	–	SetOper(source_p);
877	–
878	–	if (conf->modes)
879	–	AddUMode(source_p, conf->modes);
880	–	else if (ConfigGeneral.oper_umodes)
881	–	AddUMode(source_p, ConfigGeneral.oper_umodes);
882	–
883	–	if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
884	–	++Count.invisi;
885	–	if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
886	–	--Count.invisi;
887	–
888	–	assert(dlinkFind(&oper_list, source_p) == NULL);
889	–	dlinkAdd(source_p, make_dlink_node(), &oper_list);
890	–
891	–	AddOFlag(source_p, conf->port);
892	–
893	–	if (HasOFlag(source_p, OPER_FLAG_ADMIN))
894	–	AddUMode(source_p, UMODE_ADMIN);
895	–
896	–	if (!EmptyString(conf->whois))
897	–	{
898	–	client_attach_svstag(source_p, RPL_WHOISOPERATOR, "+", conf->whois);
899	–	sendto_server(source_p, 0, 0, ":%s SVSTAG %s %lu %u + :%s",
900	–	me.id, source_p->id, (unsigned long)source_p->tsinfo,
901	–	RPL_WHOISOPERATOR, conf->whois);
902	–	}
903	–
904	–	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, "%s is now an operator",
905	–	get_oper_name(source_p));
906	–	sendto_server(NULL, 0, 0, ":%s GLOBOPS :%s is now an operator",
907	–	me.id, get_oper_name(source_p));
908	–	send_umode_out(source_p, old);
909	–	sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
910	–	}
911	–
912	–	static char new_uid[TOTALSIDUID + 1];  /* Allow for \0 */
913	–
914	–	int
915	–	valid_sid(const char *sid)
916	–	{
917	–	if (strlen(sid) == IRC_MAXSID)
918	–	if (IsDigit(*sid))
919	–	if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
920	–	return 1;
921	–
922	–	return 0;
923	–	}
924	–
925	–	/*
926	–	* init_uid()
927	–	*
928	–	* inputs       - NONE
929	–	* output       - NONE
930	–	* side effects - new_uid is filled in with server id portion (sid)
931	–	*                (first 3 bytes). Rest is filled in with '9'.
932	–	*
933	–	* NOTE: this function assumes that 'ConfigServerInfo.sid' has been set to a proper value
934	–	*/
935	–	void
936	–	init_uid(void)
937	–	{
938	–	snprintf(new_uid, sizeof(new_uid), "%s999999", ConfigServerInfo.sid);
939	–	}
940	–
941	–	/*
942	–	* add_one_to_uid
943	–	*
944	–	* inputs       - index number into new_uid
945	–	* output       - NONE
946	–	* side effects - new_uid is incremented by one
947	–	*                note this is a recursive function
948	–	*/
949	–	static void
950	–	add_one_to_uid(unsigned int i)
951	–	{
952	–	if (i < IRC_MAXSID)
953	–	return;
954	–
955	–	if (new_uid[i] == 'Z')
956	–	new_uid[i] = '0';
957	–	else if (new_uid[i] == '9')
958	–	{
959	–	new_uid[i] = 'A';
960	–	add_one_to_uid(i - 1);
961	–	}
962	–	else
963	–	++new_uid[i];
964	–	}
965	–
966	–	/*
967	–	* uid_get
968	–	*
969	–	* inputs       - struct Client *
970	–	* output       - new UID is returned to caller
971	–	* side effects - new_uid is incremented by one.
972	–	*/
973	–	static const char *
974	–	uid_get(void)
975	–	{
976	–	add_one_to_uid(TOTALSIDUID - 1);  /* Index from 0 */
977	–	return new_uid;
978	–	}
979	–
980	–	/*
981	–	* init_isupport()
982	–	*
983	–	* input        - NONE
984	–	* output       - NONE
985	–	* side effects - Must be called before isupport is enabled
986	–	*/
987	–	void
988	–	init_isupport(void)
989	–	{
990	–	add_isupport("CALLERID", NULL, -1);
991	–	add_isupport("CASEMAPPING", "rfc1459", -1);
992	–	add_isupport("DEAF", "D", -1);
993	–	add_isupport("KICKLEN", NULL, KICKLEN);
994	–	add_isupport("MODES", NULL, MAXMODEPARAMS);
995	–	add_isupport("PREFIX", "(ohv)@%+", -1);
996	–	add_isupport("STATUSMSG", "@%+", -1);
997	–	add_isupport("EXCEPTS", NULL, -1);
998	–	add_isupport("INVEX", NULL, -1);
999	–	}
1000	–
1001	–	/*
1002	–	* add_isupport()
1003	–	*
1004	–	* input        - name of supported function
1005	–	*              - options if any
1006	–	*              - number if any
1007	–	* output       - NONE
1008	–	* side effects - Each supported item must call this when activated
1009	–	*/
1010	–	void
1011	–	add_isupport(const char *name, const char *options, int n)
1012	–	{
1013	–	dlink_node *node = NULL;
1014	–	struct Isupport *support = NULL;
1015	–
1016	–	DLINK_FOREACH(node, support_list.head)
1017	–	{
1018	–	support = node->data;
1019	–	if (irccmp(support->name, name) == 0)
1020	–	{
1021	–	MyFree(support->name);
1022	–	MyFree(support->options);
1023	–	break;
1024	–	}
1025	–	}
1026	–
1027	–	if (node == NULL)
1028	–	{
1029	–	support = MyCalloc(sizeof(*support));
1030	–	dlinkAddTail(support, &support->node, &support_list);
1031	–	}
1032	–
1033	–	support->name = xstrdup(name);
1034	–	if (options)
1035	–	support->options = xstrdup(options);
1036	–	support->number = n;
1037	–
1038	–	rebuild_isupport_message_line();
1039	–	}
1040	–
1041	–	/*
1042	–	* delete_isupport()
1043	–	*
1044	–	* input        - name of supported function
1045	–	* output       - NONE
1046	–	* side effects - Each supported item must call this when deactivated
1047	–	*/
1048	–	void
1049	–	delete_isupport(const char *name)
1050	–	{
1051	–	dlink_node *node = NULL;
1052	–
1053	–	DLINK_FOREACH(node, support_list.head)
1054	–	{
1055	–	struct Isupport *support = node->data;
1056	–
1057	–	if (irccmp(support->name, name) == 0)
1058	–	{
1059	–	dlinkDelete(node, &support_list);
1060	–	MyFree(support->name);
1061	–	MyFree(support->options);
1062	–	MyFree(support);
1063	–	break;
1064	–	}
1065	–	}
1066	–
1067	–	rebuild_isupport_message_line();
1068	–	}
1069	–
1070	–	/*
1071	–	* rebuild_isupport_message_line
1072	–	*
1073	–	* input        - NONE
1074	–	* output       - NONE
1075	–	* side effects - Destroy the isupport MessageFile lines, and rebuild.
1076	–	*/
1077	–	void
1078	–	rebuild_isupport_message_line(void)
1079	–	{
1080	–	char isupportbuffer[IRCD_BUFSIZE];
1081	–	char *p = isupportbuffer;
1082	–	dlink_node *node = NULL, *node_next = NULL;
1083	–	int n = 0;
1084	–	int tokens = 0;
1085	–	size_t len = 0;
1086	–	size_t reserve = strlen(me.name) + HOSTLEN + strlen(numeric_form(RPL_ISUPPORT));
1087	–
1088	–	DLINK_FOREACH_SAFE(node, node_next, support_list_lines.head)
1089	–	{
1090	–	dlinkDelete(node, &support_list_lines);
1091	–	MyFree(node->data);
1092	–	free_dlink_node(node);
1093	–	}
1094	–
1095	–	DLINK_FOREACH(node, support_list.head)
1096	–	{
1097	–	struct Isupport *support = node->data;
1098	–
1099	–	p += (n = sprintf(p, "%s", support->name));
1100	–	len += n;
1101	–
1102	–	if (support->options)
1103	–	{
1104	–	p += (n = sprintf(p, "=%s", support->options));
1105	–	len += n;
1106	–	}
1107	–
1108	–	if (support->number > 0)
1109	–	{
1110	–	p += (n = sprintf(p, "=%d", support->number));
1111	–	len += n;
1112	–	}
1113	–
1114	–	*p++ = ' ';
1115	–	len++;
1116	–	*p = '\0';
1117	–
1118	–	if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1119	–	{ /* arbritrary for now */
1120	–	if (*--p == ' ')
1121	–	*p = '\0';
1122	–
1123	–	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1124	–	p = isupportbuffer;
1125	–	len = 0;
1126	–	n = tokens = 0;
1127	–	}
1128	–	}
1129	–
1130	–	if (len)
1131	–	{
1132	–	if (*--p == ' ')
1133	–	*p = '\0';
1134	–	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1135	–	}
1136	–	}

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