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

Comparing ircd-hybrid/trunk/src/user.c (file contents):
Revision 5562 by michael, Sat Feb 14 20:03:35 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 19 | Line 19
19		*  USA
20		*/
21
22	<	/*! \file s_user.c
22	>	/*! \file user.c
23		* \brief User related functions.
24		* \version $Id$
25		*/
#	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/G 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	<	/*
204	<	* The else here is to make sure that G line exempt users
205	<	* do not get noticed twice.
206	<	*/
207	<	else if (IsConfExemptGline(conf))
174	>	if (IsConfExemptXline(conf))
175		{
176	<	SetExemptGline(source_p);
177	<	sendto_one_notice(source_p, &me, ":*** You are exempt from G lines. Congrats.");
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 "
230	<	"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 245 | 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 265 | 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 %d %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,
276	<	source_p->info);
277	<	else
278	<	sendto_one(server, ":%s UID %s %d %lu %s %s %s %s %s :%s",
279	<	source_p->servptr->id,
280	<	source_p->name, source_p->hopcount+1,
281	<	(unsigned long)source_p->tsinfo,
282	<	ubuf, source_p->username, source_p->host,
283	<	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 296 | Line 254 | introduce_client(struct Client *source_p
254		static void
255		user_welcome(struct Client *source_p)
256		{
299	–	#if defined(__TIME__) && defined(__DATE__)
257		static const char built_date[] = __DATE__ " at " __TIME__;
301	–	#else
302	–	static const char built_date[] = "unknown";
303	–	#endif
258
259		#ifdef HAVE_LIBCRYPTO
260		if (HasFlag(source_p, FLAGS_SSL))
#	Line 314 | 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);
320	–	show_isupport(source_p);
321	–	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 335 | 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 365 | Line 321 | register_local_user(struct Client *sourc
321
322		assert(source_p == source_p->from);
323		assert(MyConnect(source_p));
324	+	assert(IsUnknown(source_p));
325		assert(!source_p->connection->registration);
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 400 | 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] = "";
406	–	const char *p = username;
363		unsigned int i = 0;
364
365		if (IsNeedIdentd(conf))
#	Line 420 | 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 462 | 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 512 | 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 532 | 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 583 | 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	<	{
547	<	if (strcmp(source_p->sockhost, "0")) /* XXX: TBR */
548	<	sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
549	<	"Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>",
550	<	source_p->servptr->name,
595	<	source_p->name, source_p->username, source_p->host,
596	<	source_p->sockhost, source_p->info, source_p->id);
597	<	else
598	<	sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
599	<	"Client connecting at %s: %s (%s@%s) [%s] <%s>",
600	<	source_p->servptr->name,
601	<	source_p->name, source_p->username, source_p->host,
602	<	source_p->info, source_p->id);
603	<	}
546	>	sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE,
547	>	"Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>",
548	>	source_p->servptr->name,
549	>	source_p->name, source_p->username, source_p->host,
550	>	source_p->sockhost, source_p->info, source_p->id);
551
552		introduce_client(source_p);
553		}
#	Line 645 | Line 592 | valid_hostname(const char *hostname)
592		int
593		valid_username(const char *username, const int local)
594		{
648	–	unsigned int dots = 0;
595		const char *p = username;
596
597		assert(p);
#	Line 663 | 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 720 | Line 668 | valid_nickname(const char *nickname, con
668		* inputs       - client_p
669		*              - source_p
670		*              - int old
723	–	*              - sendmask mask of modes to send
671		*              - suplied umode_buf
672		* output       - NONE
673		*/
#	Line 807 | 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 829 | 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 854 | 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",
864	<	target_p->name, target_p->username,
865	<	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);
871	<
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		}
880	–
881	–	/*! \brief Blindly opers up given source_p, using conf info.
882	–	*         All checks on passwords have already been done.
883	–	* \param source_p Pointer to given client to oper
884	–	*/
885	–	void
886	–	oper_up(struct Client *source_p)
887	–	{
888	–	const unsigned int old = source_p->umodes;
889	–	const struct MaskItem *const conf = source_p->connection->confs.head->data;
890	–
891	–	assert(source_p->connection->confs.head);
892	–
893	–	++Count.oper;
894	–	SetOper(source_p);
895	–
896	–	if (conf->modes)
897	–	AddUMode(source_p, conf->modes);
898	–	else if (ConfigGeneral.oper_umodes)
899	–	AddUMode(source_p, ConfigGeneral.oper_umodes);
900	–
901	–	if (!(old & UMODE_INVISIBLE) && HasUMode(source_p, UMODE_INVISIBLE))
902	–	++Count.invisi;
903	–	if ((old & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
904	–	--Count.invisi;
905	–
906	–	assert(dlinkFind(&oper_list, source_p) == NULL);
907	–	dlinkAdd(source_p, make_dlink_node(), &oper_list);
908	–
909	–	AddOFlag(source_p, conf->port);
910	–
911	–	if (HasOFlag(source_p, OPER_FLAG_ADMIN))
912	–	AddUMode(source_p, UMODE_ADMIN);
913	–
914	–	if (!EmptyString(conf->whois))
915	–	{
916	–	client_attach_svstag(source_p, RPL_WHOISOPERATOR, "+", conf->whois);
917	–	sendto_server(source_p, 0, 0, ":%s SVSTAG %s %lu %u + :%s",
918	–	me.id, source_p->id, (unsigned long)source_p->tsinfo,
919	–	RPL_WHOISOPERATOR, conf->whois);
920	–	}
921	–
922	–	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, "%s is now an operator",
923	–	get_oper_name(source_p));
924	–	sendto_server(NULL, 0, 0, ":%s GLOBOPS :%s is now an operator",
925	–	me.id, get_oper_name(source_p));
926	–	send_umode_out(source_p, old);
927	–	sendto_one_numeric(source_p, &me, RPL_YOUREOPER);
928	–	}
929	–
930	–	static char new_uid[TOTALSIDUID + 1];  /* Allow for \0 */
931	–
932	–	int
933	–	valid_sid(const char *sid)
934	–	{
935	–	if (strlen(sid) == IRC_MAXSID)
936	–	if (IsDigit(*sid))
937	–	if (IsAlNum(*(sid + 1)) && IsAlNum(*(sid + 2)))
938	–	return 1;
939	–
940	–	return 0;
941	–	}
942	–
943	–	/*
944	–	* init_uid()
945	–	*
946	–	* inputs       - NONE
947	–	* output       - NONE
948	–	* side effects - new_uid is filled in with server id portion (sid)
949	–	*                (first 3 bytes) or defaulted to 'A'.
950	–	*                Rest is filled in with 'A'
951	–	*/
952	–	void
953	–	init_uid(void)
954	–	{
955	–	memset(new_uid, 0, sizeof(new_uid));
956	–
957	–	if (!EmptyString(ConfigServerInfo.sid))
958	–	strlcpy(new_uid, ConfigServerInfo.sid, sizeof(new_uid));
959	–
960	–	for (unsigned int i = 0; i < IRC_MAXSID; ++i)
961	–	if (new_uid[i] == '\0')
962	–	new_uid[i] = 'A';
963	–
964	–	/* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
965	–	memcpy(new_uid + IRC_MAXSID, "AAAAA@", IRC_MAXUID);
966	–	}
967	–
968	–	/*
969	–	* add_one_to_uid
970	–	*
971	–	* inputs       - index number into new_uid
972	–	* output       - NONE
973	–	* side effects - new_uid is incremented by one
974	–	*                note this is a recursive function
975	–	*/
976	–	static void
977	–	add_one_to_uid(unsigned int i)
978	–	{
979	–	if (i != IRC_MAXSID)  /* Not reached server SID portion yet? */
980	–	{
981	–	if (new_uid[i] == 'Z')
982	–	new_uid[i] = '0';
983	–	else if (new_uid[i] == '9')
984	–	{
985	–	new_uid[i] = 'A';
986	–	add_one_to_uid(i - 1);
987	–	}
988	–	else
989	–	++new_uid[i];
990	–	}
991	–	else
992	–	{
993	–	/* NOTE: if IRC_MAXUID != 6, this will have to be rewritten */
994	–	if (new_uid[i] == 'Z')
995	–	memcpy(new_uid + IRC_MAXSID, "AAAAAA", IRC_MAXUID);
996	–	else
997	–	++new_uid[i];
998	–	}
999	–	}
1000	–
1001	–	/*
1002	–	* uid_get
1003	–	*
1004	–	* inputs       - struct Client *
1005	–	* output       - new UID is returned to caller
1006	–	* side effects - new_uid is incremented by one.
1007	–	*/
1008	–	static const char *
1009	–	uid_get(void)
1010	–	{
1011	–	add_one_to_uid(TOTALSIDUID - 1);  /* Index from 0 */
1012	–	return new_uid;
1013	–	}
1014	–
1015	–	/*
1016	–	* init_isupport()
1017	–	*
1018	–	* input        - NONE
1019	–	* output       - NONE
1020	–	* side effects - Must be called before isupport is enabled
1021	–	*/
1022	–	void
1023	–	init_isupport(void)
1024	–	{
1025	–	add_isupport("CALLERID", NULL, -1);
1026	–	add_isupport("CASEMAPPING", "rfc1459", -1);
1027	–	add_isupport("DEAF", "D", -1);
1028	–	add_isupport("KICKLEN", NULL, KICKLEN);
1029	–	add_isupport("MODES", NULL, MAXMODEPARAMS);
1030	–	add_isupport("PREFIX", "(ohv)@%+", -1);
1031	–	add_isupport("STATUSMSG", "@%+", -1);
1032	–	add_isupport("EXCEPTS", NULL, -1);
1033	–	add_isupport("INVEX", NULL, -1);
1034	–	}
1035	–
1036	–	/*
1037	–	* add_isupport()
1038	–	*
1039	–	* input        - name of supported function
1040	–	*              - options if any
1041	–	*              - number if any
1042	–	* output       - NONE
1043	–	* side effects - Each supported item must call this when activated
1044	–	*/
1045	–	void
1046	–	add_isupport(const char *name, const char *options, int n)
1047	–	{
1048	–	dlink_node *node = NULL;
1049	–	struct Isupport *support = NULL;
1050	–
1051	–	DLINK_FOREACH(node, support_list.head)
1052	–	{
1053	–	support = node->data;
1054	–	if (irccmp(support->name, name) == 0)
1055	–	{
1056	–	MyFree(support->name);
1057	–	MyFree(support->options);
1058	–	break;
1059	–	}
1060	–	}
1061	–
1062	–	if (node == NULL)
1063	–	{
1064	–	support = MyCalloc(sizeof(*support));
1065	–	dlinkAddTail(support, &support->node, &support_list);
1066	–	}
1067	–
1068	–	support->name = xstrdup(name);
1069	–	if (options)
1070	–	support->options = xstrdup(options);
1071	–	support->number = n;
1072	–
1073	–	rebuild_isupport_message_line();
1074	–	}
1075	–
1076	–	/*
1077	–	* delete_isupport()
1078	–	*
1079	–	* input        - name of supported function
1080	–	* output       - NONE
1081	–	* side effects - Each supported item must call this when deactivated
1082	–	*/
1083	–	void
1084	–	delete_isupport(const char *name)
1085	–	{
1086	–	dlink_node *node = NULL;
1087	–
1088	–	DLINK_FOREACH(node, support_list.head)
1089	–	{
1090	–	struct Isupport *support = node->data;
1091	–
1092	–	if (irccmp(support->name, name) == 0)
1093	–	{
1094	–	dlinkDelete(node, &support_list);
1095	–	MyFree(support->name);
1096	–	MyFree(support->options);
1097	–	MyFree(support);
1098	–	break;
1099	–	}
1100	–	}
1101	–
1102	–	rebuild_isupport_message_line();
1103	–	}
1104	–
1105	–	/*
1106	–	* rebuild_isupport_message_line
1107	–	*
1108	–	* input        - NONE
1109	–	* output       - NONE
1110	–	* side effects - Destroy the isupport MessageFile lines, and rebuild.
1111	–	*/
1112	–	void
1113	–	rebuild_isupport_message_line(void)
1114	–	{
1115	–	char isupportbuffer[IRCD_BUFSIZE];
1116	–	char *p = isupportbuffer;
1117	–	dlink_node *node = NULL, *node_next = NULL;
1118	–	int n = 0;
1119	–	int tokens = 0;
1120	–	size_t len = 0;
1121	–	size_t reserve = strlen(me.name) + HOSTLEN + strlen(numeric_form(RPL_ISUPPORT));
1122	–
1123	–	DLINK_FOREACH_SAFE(node, node_next, support_list_lines.head)
1124	–	{
1125	–	dlinkDelete(node, &support_list_lines);
1126	–	MyFree(node->data);
1127	–	free_dlink_node(node);
1128	–	}
1129	–
1130	–	DLINK_FOREACH(node, support_list.head)
1131	–	{
1132	–	struct Isupport *support = node->data;
1133	–
1134	–	p += (n = sprintf(p, "%s", support->name));
1135	–	len += n;
1136	–
1137	–	if (support->options)
1138	–	{
1139	–	p += (n = sprintf(p, "=%s", support->options));
1140	–	len += n;
1141	–	}
1142	–
1143	–	if (support->number > 0)
1144	–	{
1145	–	p += (n = sprintf(p, "=%d", support->number));
1146	–	len += n;
1147	–	}
1148	–
1149	–	*p++ = ' ';
1150	–	len++;
1151	–	*p = '\0';
1152	–
1153	–	if (++tokens == (MAXPARA-2) || len >= (sizeof(isupportbuffer)-reserve))
1154	–	{ /* arbritrary for now */
1155	–	if (*--p == ' ')
1156	–	*p = '\0';
1157	–
1158	–	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1159	–	p = isupportbuffer;
1160	–	len = 0;
1161	–	n = tokens = 0;
1162	–	}
1163	–	}
1164	–
1165	–	if (len)
1166	–	{
1167	–	if (*--p == ' ')
1168	–	*p = '\0';
1169	–	dlinkAddTail(xstrdup(isupportbuffer), make_dlink_node(), &support_list_lines);
1170	–	}
1171	–	}

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