2 * IRC - Internet Relay Chat, ircd/s_user.c (formerly ircd/s_msg.c)
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * See file AUTHORS in IRC package for additional names of
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 1, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * @brief Miscellaneous user-related helper functions.
25 * @version $Id: s_user.c,v 1.99.2.2 2006/02/16 03:49:54 entrope Exp $
36 #include "ircd_alloc.h"
37 #include "ircd_chattr.h"
38 #include "ircd_features.h"
40 #include "ircd_reply.h"
41 #include "ircd_snprintf.h"
42 #include "ircd_string.h"
51 #include "querycmds.h"
58 #include "s_serv.h" /* max_client_count */
61 #include "supported.h"
67 #include "handlers.h" /* m_motd and m_lusers */
69 /* #include <assert.h> -- Now using assert in ircd_log.h */
76 /** Count of allocated User structures. */
77 static int userCount
= 0;
79 /** Makes sure that \a cptr has a User information block.
80 * If cli_user(cptr) != NULL, does nothing.
81 * @param[in] cptr Client to attach User struct to.
82 * @return User struct associated with \a cptr.
84 struct User
*make_user(struct Client
*cptr
)
88 if (!cli_user(cptr
)) {
89 cli_user(cptr
) = (struct User
*) MyMalloc(sizeof(struct User
));
90 assert(0 != cli_user(cptr
));
92 /* All variables are 0 by default */
93 memset(cli_user(cptr
), 0, sizeof(struct User
));
95 cli_user(cptr
)->refcnt
= 1;
97 return cli_user(cptr
);
100 /** Dereference \a user.
101 * User structures are reference-counted; if the refcount of \a user
102 * becomes zero, free it.
103 * @param[in] user User to dereference.
105 void free_user(struct User
* user
)
108 assert(0 < user
->refcnt
);
110 if (--user
->refcnt
== 0) {
116 assert(0 == user
->joined
);
117 assert(0 == user
->invited
);
118 assert(0 == user
->channel
);
125 /** Find number of User structs allocated and memory used by them.
126 * @param[out] count_out Receives number of User structs allocated.
127 * @param[out] bytes_out Receives number of bytes used by User structs.
129 void user_count_memory(size_t* count_out
, size_t* bytes_out
)
131 assert(0 != count_out
);
132 assert(0 != bytes_out
);
133 *count_out
= userCount
;
134 *bytes_out
= userCount
* sizeof(struct User
);
138 /** Find the next client (starting at \a next) with a name that matches \a ch.
139 * Normal usage loop is:
140 * for (x = client; x = next_client(x,mask); x = x->next)
141 * HandleMatchingClient;
143 * @param[in] next First client to check.
144 * @param[in] ch Name mask to check against.
145 * @return Next matching client found, or NULL if none.
147 struct Client
*next_client(struct Client
*next
, const char* ch
)
149 struct Client
*tmp
= next
;
154 next
= FindClient(ch
);
155 next
= next
? next
: tmp
;
156 if (cli_prev(tmp
) == next
)
160 for (; next
; next
= cli_next(next
))
161 if (!match(ch
, cli_name(next
)))
166 /** Find the destination server for a command, and forward it if that is not us.
168 * \a server may be a nickname, server name, server mask (if \a from
169 * is a local user) or server numnick (if \a is a server or remote
172 * @param[in] from Client that sent the command to us.
173 * @param[in] cmd Long-form command text.
174 * @param[in] tok Token-form command text.
175 * @param[in] one Client that originated the command (ignored).
176 * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH.
177 * @param[in] pattern Format string of arguments to command.
178 * @param[in] server Index of target name or mask in \a parv.
179 * @param[in] parc Number of valid elements in \a parv (must be less than 9).
180 * @param[in] parv Array of arguments to command.
181 * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS.
183 int hunt_server_cmd(struct Client
*from
, const char *cmd
, const char *tok
,
184 struct Client
*one
, int MustBeOper
, const char *pattern
,
185 int server
, int parc
, char *parv
[])
187 struct Client
*acptr
;
190 /* Assume it's me, if no server or an unregistered client */
191 if (parc
<= server
|| EmptyString((to
= parv
[server
])) || IsUnknown(from
))
192 return (HUNTED_ISME
);
194 if (MustBeOper
&& !IsPrivileged(from
))
196 send_reply(from
, ERR_NOPRIVILEGES
);
197 return HUNTED_NOSUCH
;
200 /* Make sure it's a server */
202 /* Make sure it's a server */
203 if (!strchr(to
, '*')) {
204 if (0 == (acptr
= FindClient(to
))) {
205 send_reply(from
, ERR_NOSUCHSERVER
, to
);
206 return HUNTED_NOSUCH
;
210 acptr
= cli_user(acptr
)->server
;
211 } else if (!(acptr
= find_match_server(to
))) {
212 send_reply(from
, ERR_NOSUCHSERVER
, to
);
213 return (HUNTED_NOSUCH
);
215 } else if (!(acptr
= FindNServer(to
))) {
216 send_reply(from
, SND_EXPLICIT
| ERR_NOSUCHSERVER
, "* :Server has disconnected");
217 return (HUNTED_NOSUCH
); /* Server broke off in the meantime */
221 return (HUNTED_ISME
);
223 if (MustBeOper
&& !IsPrivileged(from
)) {
224 send_reply(from
, ERR_NOPRIVILEGES
);
225 return HUNTED_NOSUCH
;
228 /* assert(!IsServer(from)); */
230 parv
[server
] = (char *) acptr
; /* HACK! HACK! HACK! ARGH! */
232 sendcmdto_one(from
, cmd
, tok
, acptr
, pattern
, parv
[1], parv
[2], parv
[3],
233 parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
235 return (HUNTED_PASS
);
238 /** Find the destination server for a command, and forward it (as a
239 * high-priority command) if that is not us.
241 * \a server may be a nickname, server name, server mask (if \a from
242 * is a local user) or server numnick (if \a is a server or remote
244 * Unlike hunt_server_cmd(), this appends the message to the
245 * high-priority message queue for the destination server.
247 * @param[in] from Client that sent the command to us.
248 * @param[in] cmd Long-form command text.
249 * @param[in] tok Token-form command text.
250 * @param[in] one Client that originated the command (ignored).
251 * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH.
252 * @param[in] pattern Format string of arguments to command.
253 * @param[in] server Index of target name or mask in \a parv.
254 * @param[in] parc Number of valid elements in \a parv (must be less than 9).
255 * @param[in] parv Array of arguments to command.
256 * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS.
258 int hunt_server_prio_cmd(struct Client
*from
, const char *cmd
, const char *tok
,
259 struct Client
*one
, int MustBeOper
,
260 const char *pattern
, int server
, int parc
,
263 struct Client
*acptr
;
266 /* Assume it's me, if no server or an unregistered client */
267 if (parc
<= server
|| EmptyString((to
= parv
[server
])) || IsUnknown(from
))
268 return (HUNTED_ISME
);
270 /* Make sure it's a server */
272 /* Make sure it's a server */
273 if (!strchr(to
, '*')) {
274 if (0 == (acptr
= FindClient(to
))) {
275 send_reply(from
, ERR_NOSUCHSERVER
, to
);
276 return HUNTED_NOSUCH
;
280 acptr
= cli_user(acptr
)->server
;
281 } else if (!(acptr
= find_match_server(to
))) {
282 send_reply(from
, ERR_NOSUCHSERVER
, to
);
283 return (HUNTED_NOSUCH
);
285 } else if (!(acptr
= FindNServer(to
)))
286 return (HUNTED_NOSUCH
); /* Server broke off in the meantime */
289 return (HUNTED_ISME
);
291 if (MustBeOper
&& !IsPrivileged(from
)) {
292 send_reply(from
, ERR_NOPRIVILEGES
);
293 return HUNTED_NOSUCH
;
296 /* assert(!IsServer(from)); SETTIME to particular destinations permitted */
298 parv
[server
] = (char *) acptr
; /* HACK! HACK! HACK! ARGH! */
300 sendcmdto_prio_one(from
, cmd
, tok
, acptr
, pattern
, parv
[1], parv
[2], parv
[3],
301 parv
[4], parv
[5], parv
[6], parv
[7], parv
[8]);
303 return (HUNTED_PASS
);
310 * This function is called when both NICK and USER messages
311 * have been accepted for the client, in whatever order. Only
312 * after this the USER message is propagated.
314 * NICK's must be propagated at once when received, although
315 * it would be better to delay them too until full info is
316 * available. Doing it is not so simple though, would have
317 * to implement the following:
319 * 1) user telnets in and gives only "NICK foobar" and waits
320 * 2) another user far away logs in normally with the nick
321 * "foobar" (quite legal, as this server didn't propagate it).
322 * 3) now this server gets nick "foobar" from outside, but
323 * has already the same defined locally. Current server
324 * would just issue "KILL foobar" to clean out dups. But,
325 * this is not fair. It should actually request another
326 * nick from local user or kill him/her...
328 /** Finish registering a user who has sent both NICK and USER.
329 * For local connections, possibly check IAuth; make sure there is a
330 * matching Client config block; clean the username field; check
331 * K/k-lines; check for "hacked" looking usernames; assign a numnick;
332 * and send greeting (WELCOME, ISUPPORT, MOTD, etc).
333 * For all connections, update the invisible user and operator counts;
334 * run IPcheck against their address; and forward the NICK.
336 * @param[in] cptr Client who introduced the user.
337 * @param[in,out] sptr Client who has been fully introduced.
338 * @return Zero or CPTR_KILLED.
340 int register_user(struct Client
*cptr
, struct Client
*sptr
)
344 struct User
* user
= cli_user(sptr
);
347 user
->last
= CurrentTime
;
348 parv
[0] = cli_name(sptr
);
349 parv
[1] = parv
[2] = NULL
;
353 assert(cptr
== sptr
);
355 Count_unknownbecomesclient(sptr
, UserStats
);
358 cli_handler(sptr
) = CLIENT_HANDLER
;
359 SetLocalNumNick(sptr
);
362 feature_str(FEAT_NETWORK
),
363 feature_str(FEAT_PROVIDER
) ? " via " : "",
364 feature_str(FEAT_PROVIDER
) ? feature_str(FEAT_PROVIDER
) : "",
367 * This is a duplicate of the NOTICE but see below...
369 send_reply(sptr
, RPL_YOURHOST
, cli_name(&me
), version
);
370 send_reply(sptr
, RPL_CREATED
, creation
);
371 send_reply(sptr
, RPL_MYINFO
, cli_name(&me
), version
, infousermodes
,
372 infochanmodes
, infochanmodeswithparams
);
373 send_supported(sptr
);
374 m_lusers(sptr
, sptr
, 1, parv
);
377 if (cli_snomask(sptr
) & SNO_NOISY
)
378 set_snomask(sptr
, cli_snomask(sptr
) & SNO_NOISY
, SNO_ADD
);
379 if (feature_bool(FEAT_CONNEXIT_NOTICES
))
380 sendto_opmask_butone(0, SNO_CONNEXIT
,
381 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s%s>",
382 cli_name(sptr
), user
->username
, user
->host
,
383 cli_sock_ip(sptr
), get_client_class(sptr
),
384 cli_info(sptr
), NumNick(cptr
) /* two %s's */);
386 IPcheck_connect_succeeded(sptr
);
388 * Set user's initial modes
390 tmpstr
= (char*)client_get_default_umode(sptr
);
391 if (tmpstr
) for (; *tmpstr
; ++tmpstr
) {
394 if (!feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY
)) {
396 set_snomask(sptr
, SNO_DEFAULT
, SNO_SET
);
400 if (!feature_bool(FEAT_WALLOPS_OPER_ONLY
))
410 if (!feature_bool(FEAT_HIS_DEBUG_OPER_ONLY
))
417 struct Client
*acptr
= user
->server
;
419 Count_newremoteclient(UserStats
, acptr
);
421 if (cli_from(acptr
) != cli_from(sptr
))
423 sendcmdto_one(&me
, CMD_KILL
, cptr
, "%C :%s (%s != %s[%s])",
424 sptr
, cli_name(&me
), cli_name(user
->server
), cli_name(cli_from(acptr
)),
425 cli_sockhost(cli_from(acptr
)));
426 SetFlag(sptr
, FLAG_KILLED
);
427 return exit_client(cptr
, sptr
, &me
, "NICK server wrong direction");
429 else if (HasFlag(acptr
, FLAG_TS8
))
430 SetFlag(sptr
, FLAG_TS8
);
433 * Check to see if this user is being propagated
434 * as part of a net.burst, or is using protocol 9.
435 * FIXME: This can be sped up - its stupid to check it for
436 * every NICK message in a burst again --Run.
438 for (; acptr
!= &me
; acptr
= cli_serv(acptr
)->up
)
440 if (IsBurst(acptr
) || Protocol(acptr
) < 10)
443 if (!IPcheck_remote_connect(sptr
, (acptr
!= &me
)))
446 * We ran out of bits to count this
448 sendcmdto_one(&me
, CMD_KILL
, sptr
, "%C :%s (Too many connections from your host -- Ghost)",
449 sptr
, cli_name(&me
));
450 return exit_client(cptr
, sptr
, &me
,"Too many connections from your host -- throttled");
455 if (IsInvisible(sptr
))
456 ++UserStats
.inv_clients
;
460 tmpstr
= umode_str(sptr
);
461 /* Send full IP address to IPv6-grokking servers. */
462 sendcmdto_flag_serv_butone(user
->server
, CMD_NICK
, cptr
,
463 FLAG_IPV6
, FLAG_LAST_FLAG
,
464 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
465 cli_name(sptr
), cli_hopcount(sptr
) + 1,
467 user
->username
, user
->realhost
,
468 *tmpstr
? "+" : "", tmpstr
, *tmpstr
? " " : "",
469 iptobase64(ip_base64
, &cli_ip(sptr
), sizeof(ip_base64
), 1),
470 NumNick(sptr
), cli_info(sptr
));
471 /* Send fake IPv6 addresses to pre-IPv6 servers. */
472 sendcmdto_flag_serv_butone(user
->server
, CMD_NICK
, cptr
,
473 FLAG_LAST_FLAG
, FLAG_IPV6
,
474 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
475 cli_name(sptr
), cli_hopcount(sptr
) + 1,
477 user
->username
, user
->realhost
,
478 *tmpstr
? "+" : "", tmpstr
, *tmpstr
? " " : "",
479 iptobase64(ip_base64
, &cli_ip(sptr
), sizeof(ip_base64
), 0),
480 NumNick(sptr
), cli_info(sptr
));
482 /* Send user mode to client */
485 static struct Flags flags
; /* automatically initialized to zeros */
486 /* To avoid sending +r to the client due to auth-on-connect, set
487 * the "old" FLAG_ACCOUNT bit to match the client's value.
490 FlagSet(&flags
, FLAG_ACCOUNT
);
492 FlagClr(&flags
, FLAG_ACCOUNT
);
493 send_umode(cptr
, sptr
, &flags
, ALL_UMODES
);
494 if ((cli_snomask(sptr
) != SNO_DEFAULT
) && HasFlag(sptr
, FLAG_SERVNOTICE
))
495 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
500 /** List of user mode characters. */
501 static const struct UserMode
{
502 unsigned int flag
; /**< User mode constant. */
503 char c
; /**< Character corresponding to the mode. */
507 { FLAG_INVISIBLE
, 'i' },
508 { FLAG_WALLOP
, 'w' },
509 { FLAG_SERVNOTICE
, 's' },
511 { FLAG_CHSERV
, 'k' },
513 { FLAG_ACCOUNT
, 'r' },
514 { FLAG_HIDDENHOST
, 'x' }
517 /** Length of #userModeList. */
518 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
521 * XXX - find a way to get rid of this
523 /** Nasty global buffer used for communications with umode_str() and others. */
524 static char umodeBuf
[BUFSIZE
];
526 /** Try to set a user's nickname.
527 * If \a sptr is a server, the client is being introduced for the first time.
528 * @param[in] cptr Client to set nickname.
529 * @param[in] sptr Client sending the NICK.
530 * @param[in] nick New nickname.
531 * @param[in] parc Number of arguments to NICK.
532 * @param[in] parv Argument list to NICK.
533 * @return CPTR_KILLED if \a cptr was killed, else 0.
535 int set_nick_name(struct Client
* cptr
, struct Client
* sptr
,
536 const char* nick
, int parc
, char* parv
[])
538 if (IsServer(sptr
)) {
540 const char* account
= 0;
544 * A server introducing a new client, change source
546 struct Client
* new_client
= make_client(cptr
, STAT_UNKNOWN
);
547 assert(0 != new_client
);
549 cli_hopcount(new_client
) = atoi(parv
[2]);
550 cli_lastnick(new_client
) = atoi(parv
[3]);
551 if (Protocol(cptr
) > 9 && parc
> 7 && *parv
[6] == '+')
553 for (p
= parv
[6] + 1; *p
; p
++)
555 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
557 if (userModeList
[i
].c
== *p
)
559 SetFlag(new_client
, userModeList
[i
].flag
);
560 if (userModeList
[i
].flag
== FLAG_ACCOUNT
)
567 client_set_privs(new_client
, NULL
); /* set privs on user */
571 strcpy(cli_name(new_client
), nick
);
572 cli_user(new_client
) = make_user(new_client
);
573 cli_user(new_client
)->server
= sptr
;
574 SetRemoteNumNick(new_client
, parv
[parc
- 2]);
576 * IP# of remote client
578 base64toip(parv
[parc
- 3], &cli_ip(new_client
));
580 add_client_to_list(new_client
);
581 hAddClient(new_client
);
583 cli_serv(sptr
)->ghost
= 0; /* :server NICK means end of net.burst */
584 ircd_strncpy(cli_username(new_client
), parv
[4], USERLEN
);
585 ircd_strncpy(cli_user(new_client
)->username
, parv
[4], USERLEN
);
586 ircd_strncpy(cli_user(new_client
)->host
, parv
[5], HOSTLEN
);
587 ircd_strncpy(cli_user(new_client
)->realhost
, parv
[5], HOSTLEN
);
588 ircd_strncpy(cli_info(new_client
), parv
[parc
- 1], REALLEN
);
590 int len
= ACCOUNTLEN
;
591 if ((p
= strchr(account
, ':'))) {
592 len
= (p
++) - account
;
593 cli_user(new_client
)->acc_create
= atoi(p
);
594 Debug((DEBUG_DEBUG
, "Received timestamped account in user mode; "
595 "account \"%s\", timestamp %Tu", account
,
596 cli_user(new_client
)->acc_create
));
598 ircd_strncpy(cli_user(new_client
)->account
, account
, len
);
600 if (HasHiddenHost(new_client
))
601 ircd_snprintf(0, cli_user(new_client
)->host
, HOSTLEN
, "%s.%s",
602 account
, feature_str(FEAT_HIDDEN_HOST
));
604 return register_user(cptr
, new_client
);
606 else if ((cli_name(sptr
))[0]) {
608 * Client changing its nick
610 * If the client belongs to me, then check to see
611 * if client is on any channels where it is currently
612 * banned. If so, do not allow the nick change to occur.
615 const char* channel_name
;
616 struct Membership
*member
;
617 if ((channel_name
= find_no_nickchange_channel(sptr
))) {
618 return send_reply(cptr
, ERR_BANNICKCHANGE
, channel_name
);
621 * Refuse nick change if the last nick change was less
622 * then 30 seconds ago. This is intended to get rid of
623 * clone bots doing NICK FLOOD. -SeKs
624 * If someone didn't change their nick for more then 60 seconds
625 * however, allow to do two nick changes immediately after another
626 * before limiting the nick flood. -Run
628 if (CurrentTime
< cli_nextnick(cptr
))
630 cli_nextnick(cptr
) += 2;
631 send_reply(cptr
, ERR_NICKTOOFAST
, parv
[1],
632 cli_nextnick(cptr
) - CurrentTime
);
633 /* Send error message */
634 sendcmdto_one(cptr
, CMD_NICK
, cptr
, "%s", cli_name(cptr
));
635 /* bounce NICK to user */
636 return 0; /* ignore nick change! */
639 /* Limit total to 1 change per NICK_DELAY seconds: */
640 cli_nextnick(cptr
) += NICK_DELAY
;
641 /* However allow _maximal_ 1 extra consecutive nick change: */
642 if (cli_nextnick(cptr
) < CurrentTime
)
643 cli_nextnick(cptr
) = CurrentTime
;
645 /* Invalidate all bans against the user so we check them again */
646 for (member
= (cli_user(cptr
))->channel
; member
;
647 member
= member
->next_channel
)
648 ClearBanValid(member
);
651 * Also set 'lastnick' to current time, if changed.
653 if (0 != ircd_strcmp(parv
[0], nick
))
654 cli_lastnick(sptr
) = (sptr
== cptr
) ? TStime() : atoi(parv
[2]);
657 * Client just changing his/her nick. If he/she is
658 * on a channel, send note of change to all clients
659 * on that channel. Propagate notice to other servers.
662 sendcmdto_common_channels_butone(sptr
, CMD_NICK
, NULL
, ":%s", nick
);
663 add_history(sptr
, 1);
664 sendcmdto_serv_butone(sptr
, CMD_NICK
, cptr
, "%s %Tu", nick
,
668 sendcmdto_one(sptr
, CMD_NICK
, sptr
, ":%s", nick
);
670 if ((cli_name(sptr
))[0])
672 strcpy(cli_name(sptr
), nick
);
676 /* Local client setting NICK the first time */
677 strcpy(cli_name(sptr
), nick
);
679 return auth_set_nick(cli_auth(sptr
), nick
);
684 /** Calculate the hash value for a target.
685 * @param[in] target Pointer to target, cast to unsigned int.
686 * @return Hash value constructed from the pointer.
688 static unsigned char hash_target(unsigned int target
)
690 return (unsigned char) (target
>> 16) ^ (target
>> 8);
693 /** Records \a target as a recent target for \a sptr.
694 * @param[in] sptr User who has sent to a new target.
695 * @param[in] target Target to add.
698 add_target(struct Client
*sptr
, void *target
)
700 /* Ok, this shouldn't work esp on alpha
702 unsigned char hash
= hash_target((unsigned long) target
);
703 unsigned char* targets
;
706 assert(cli_local(sptr
));
708 targets
= cli_targets(sptr
);
713 for (i
= 0; i
< MAXTARGETS
; ++i
) {
714 if (targets
[i
] == hash
)
720 memmove(&targets
[RESERVEDTARGETS
+ 1],
721 &targets
[RESERVEDTARGETS
], MAXTARGETS
- RESERVEDTARGETS
- 1);
722 targets
[RESERVEDTARGETS
] = hash
;
725 /** Check whether \a sptr can send to or join \a target yet.
726 * @param[in] sptr User trying to join a channel or send a message.
727 * @param[in] target Target of the join or message.
728 * @param[in] name Name of the target.
729 * @param[in] created If non-zero, trying to join a new channel.
730 * @return Non-zero if too many target changes; zero if okay to send.
732 int check_target_limit(struct Client
*sptr
, void *target
, const char *name
,
735 unsigned char hash
= hash_target((unsigned long) target
);
737 unsigned char* targets
;
740 assert(cli_local(sptr
));
741 targets
= cli_targets(sptr
);
743 /* If user is invited to channel, give him/her a free target */
744 if (IsChannelName(name
) && IsInvited(sptr
, target
))
748 * Same target as last time?
750 if (targets
[0] == hash
)
752 for (i
= 1; i
< MAXTARGETS
; ++i
) {
753 if (targets
[i
] == hash
) {
754 memmove(&targets
[1], &targets
[0], i
);
763 if (CurrentTime
< cli_nexttarget(sptr
)) {
764 if (cli_nexttarget(sptr
) - CurrentTime
< TARGET_DELAY
+ 8) {
768 cli_nexttarget(sptr
) += 2;
769 send_reply(sptr
, ERR_TARGETTOOFAST
, name
,
770 cli_nexttarget(sptr
) - CurrentTime
);
775 cli_nexttarget(sptr
) += TARGET_DELAY
;
776 if (cli_nexttarget(sptr
) < CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1)))
777 cli_nexttarget(sptr
) = CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1));
780 memmove(&targets
[1], &targets
[0], MAXTARGETS
- 1);
785 /** Allows a channel operator to avoid target change checks when
786 * sending messages to users on their channel.
787 * @param[in] source User sending the message.
788 * @param[in] nick Destination of the message.
789 * @param[in] channel Name of channel being sent to.
790 * @param[in] text Message to send.
791 * @param[in] is_notice If non-zero, use CNOTICE instead of CPRIVMSG.
793 /* Added 971023 by Run. */
794 int whisper(struct Client
* source
, const char* nick
, const char* channel
,
795 const char* text
, int is_notice
)
798 struct Channel
* chptr
;
799 struct Membership
* membership
;
803 assert(0 != channel
);
804 assert(MyUser(source
));
806 if (!(dest
= FindUser(nick
))) {
807 return send_reply(source
, ERR_NOSUCHNICK
, nick
);
809 if (!(chptr
= FindChannel(channel
))) {
810 return send_reply(source
, ERR_NOSUCHCHANNEL
, channel
);
813 * compare both users channel lists, instead of the channels user list
814 * since the link is the same, this should be a little faster for channels
815 * with a lot of users
817 for (membership
= cli_user(source
)->channel
; membership
; membership
= membership
->next_channel
) {
818 if (chptr
== membership
->channel
)
821 if (0 == membership
) {
822 return send_reply(source
, ERR_NOTONCHANNEL
, chptr
->chname
);
824 if (!IsVoicedOrOpped(membership
)) {
825 return send_reply(source
, ERR_VOICENEEDED
, chptr
->chname
);
828 * lookup channel in destination
830 assert(0 != cli_user(dest
));
831 for (membership
= cli_user(dest
)->channel
; membership
; membership
= membership
->next_channel
) {
832 if (chptr
== membership
->channel
)
835 if (0 == membership
|| IsZombie(membership
)) {
836 return send_reply(source
, ERR_USERNOTINCHANNEL
, cli_name(dest
), chptr
->chname
);
838 if (is_silenced(source
, dest
))
841 if (cli_user(dest
)->away
)
842 send_reply(source
, RPL_AWAY
, cli_name(dest
), cli_user(dest
)->away
);
844 sendcmdto_one(source
, CMD_NOTICE
, dest
, "%C :%s", dest
, text
);
846 sendcmdto_one(source
, CMD_PRIVATE
, dest
, "%C :%s", dest
, text
);
851 /** Send a user mode change for \a cptr to neighboring servers.
852 * @param[in] cptr User whose mode is changing.
853 * @param[in] sptr Client who sent us the mode change message.
854 * @param[in] old Prior set of user flags.
855 * @param[in] prop If non-zero, also include FLAG_OPER.
857 void send_umode_out(struct Client
*cptr
, struct Client
*sptr
,
858 struct Flags
*old
, int prop
)
861 struct Client
*acptr
;
863 send_umode(NULL
, sptr
, old
, prop
? SEND_UMODES
: SEND_UMODES_BUT_OPER
);
865 for (i
= HighestFd
; i
>= 0; i
--)
867 if ((acptr
= LocalClientArray
[i
]) && IsServer(acptr
) &&
868 (acptr
!= cptr
) && (acptr
!= sptr
) && *umodeBuf
)
869 sendcmdto_one(sptr
, CMD_MODE
, acptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
871 if (cptr
&& MyUser(cptr
))
872 send_umode(cptr
, sptr
, old
, ALL_UMODES
);
876 /** Call \a fmt for each Client named in \a names.
877 * @param[in] sptr Client requesting information.
878 * @param[in] names Space-delimited list of nicknames.
879 * @param[in] rpl Base reply string for messages.
880 * @param[in] fmt Formatting callback function.
882 void send_user_info(struct Client
* sptr
, char* names
, int rpl
, InfoFormatter fmt
)
888 struct Client
* acptr
;
895 mb
= msgq_make(sptr
, rpl_str(rpl
), cli_name(&me
), cli_name(sptr
));
897 for (name
= ircd_strtok(&p
, names
, " "); name
; name
= ircd_strtok(&p
, 0, " ")) {
898 if ((acptr
= FindUser(name
))) {
900 msgq_append(0, mb
, " ");
901 (*fmt
)(acptr
, sptr
, mb
);
903 if (5 == ++arg_count
)
906 send_buffer(sptr
, mb
, 0);
910 /** Set \a flag on \a cptr and possibly hide the client's hostmask.
911 * @param[in,out] cptr User who is getting a new flag.
912 * @param[in] flag Some flag that affects host-hiding (FLAG_HIDDENHOST, FLAG_ACCOUNT).
916 hide_hostmask(struct Client
*cptr
, unsigned int flag
)
918 struct Membership
*chan
;
921 case FLAG_HIDDENHOST
:
922 /* Local users cannot set +x unless FEAT_HOST_HIDING is true. */
923 if (MyConnect(cptr
) && !feature_bool(FEAT_HOST_HIDING
))
927 /* Invalidate all bans against the user so we check them again */
928 for (chan
= (cli_user(cptr
))->channel
; chan
;
929 chan
= chan
->next_channel
)
937 if (!HasFlag(cptr
, FLAG_HIDDENHOST
) || !HasFlag(cptr
, FLAG_ACCOUNT
))
940 sendcmdto_common_channels_butone(cptr
, CMD_QUIT
, cptr
, ":Registered");
941 ircd_snprintf(0, cli_user(cptr
)->host
, HOSTLEN
, "%s.%s",
942 cli_user(cptr
)->account
, feature_str(FEAT_HIDDEN_HOST
));
944 /* ok, the client is now fully hidden, so let them know -- hikari */
946 send_reply(cptr
, RPL_HOSTHIDDEN
, cli_user(cptr
)->host
);
949 * Go through all channels the client was on, rejoin him
950 * and set the modes, if any
952 for (chan
= cli_user(cptr
)->channel
; chan
; chan
= chan
->next_channel
)
956 /* Send a JOIN unless the user's join has been delayed. */
957 if (!IsDelayedJoin(chan
))
958 sendcmdto_channel_butserv_butone(cptr
, CMD_JOIN
, chan
->channel
, cptr
, 0,
959 "%H", chan
->channel
);
960 if (IsChanOp(chan
) && HasVoice(chan
))
961 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
962 "%H +ov %C %C", chan
->channel
, cptr
,
964 else if (IsChanOp(chan
) || HasVoice(chan
))
965 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
966 "%H +%c %C", chan
->channel
, IsChanOp(chan
) ? 'o' : 'v', cptr
);
971 /** Set a user's mode. This function checks that \a cptr is trying to
972 * set his own mode, prevents local users from setting inappropriate
973 * modes through this function, and applies any other side effects of
974 * a successful mode change.
976 * @param[in,out] cptr User setting someone's mode.
977 * @param[in] sptr Client who sent the mode change message.
978 * @param[in] parc Number of parameters in \a parv.
979 * @param[in] parv Parameters to MODE.
982 int set_user_mode(struct Client
*cptr
, struct Client
*sptr
, int parc
, char *parv
[])
986 struct Client
*acptr
;
989 struct Flags setflags
;
990 unsigned int tmpmask
= 0;
991 int snomask_given
= 0;
994 int do_host_hiding
= 0;
999 return need_more_params(sptr
, "MODE");
1001 if (!(acptr
= FindUser(parv
[1])))
1003 if (MyConnect(sptr
))
1004 send_reply(sptr
, ERR_NOSUCHCHANNEL
, parv
[1]);
1008 if (IsServer(sptr
) || sptr
!= acptr
)
1011 sendwallto_group_butone(&me
, WALL_WALLOPS
, 0,
1012 "MODE for User %s from %s!%s", parv
[1],
1013 cli_name(cptr
), cli_name(sptr
));
1015 send_reply(sptr
, ERR_USERSDONTMATCH
);
1023 for (i
= 0; i
< USERMODELIST_SIZE
; i
++)
1025 if (HasFlag(sptr
, userModeList
[i
].flag
) &&
1026 userModeList
[i
].flag
!= FLAG_ACCOUNT
)
1027 *m
++ = userModeList
[i
].c
;
1030 send_reply(sptr
, RPL_UMODEIS
, buf
);
1031 if (HasFlag(sptr
, FLAG_SERVNOTICE
) && MyConnect(sptr
)
1032 && cli_snomask(sptr
) !=
1033 (unsigned int)(IsOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
))
1034 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1039 * find flags already set for user
1040 * why not just copy them?
1042 setflags
= cli_flags(sptr
);
1044 if (MyConnect(sptr
))
1045 tmpmask
= cli_snomask(sptr
);
1048 * parse mode change string(s)
1050 for (p
= &parv
[2]; *p
; p
++) { /* p is changed in loop too */
1051 for (m
= *p
; *m
; m
++) {
1060 if (*(p
+ 1) && is_snomask(*(p
+ 1))) {
1062 tmpmask
= umode_make_snomask(tmpmask
, *++p
, what
);
1063 tmpmask
&= (IsAnOper(sptr
) ? SNO_ALL
: SNO_USER
);
1066 tmpmask
= (what
== MODE_ADD
) ?
1067 (IsAnOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
) : 0;
1069 SetServNotice(sptr
);
1071 ClearServNotice(sptr
);
1074 if (what
== MODE_ADD
)
1080 if (what
== MODE_ADD
)
1083 ClrFlag(sptr
, FLAG_OPER
);
1084 ClrFlag(sptr
, FLAG_LOCOP
);
1085 if (MyConnect(sptr
))
1087 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1088 cli_handler(sptr
) = CLIENT_HANDLER
;
1093 if (what
== MODE_ADD
)
1097 ClrFlag(sptr
, FLAG_OPER
);
1098 ClrFlag(sptr
, FLAG_LOCOP
);
1099 if (MyConnect(sptr
))
1101 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1102 cli_handler(sptr
) = CLIENT_HANDLER
;
1107 if (what
== MODE_ADD
)
1110 ClearInvisible(sptr
);
1113 if (what
== MODE_ADD
)
1119 if (what
== MODE_ADD
)
1120 SetChannelService(sptr
);
1122 ClearChannelService(sptr
);
1125 if (what
== MODE_ADD
)
1131 if (what
== MODE_ADD
)
1135 send_reply(sptr
, ERR_UMODEUNKNOWNFLAG
, *m
);
1141 * Evaluate rules for new user mode
1142 * Stop users making themselves operators too easily:
1144 if (!IsServer(cptr
))
1146 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1148 if (!FlagHas(&setflags
, FLAG_LOCOP
) && IsLocOp(sptr
))
1151 * new umode; servers can set it, local users cannot;
1152 * prevents users from /kick'ing or /mode -o'ing
1154 if (!FlagHas(&setflags
, FLAG_CHSERV
))
1155 ClearChannelService(sptr
);
1157 * only send wallops to opers
1159 if (feature_bool(FEAT_WALLOPS_OPER_ONLY
) && !IsAnOper(sptr
) &&
1160 !FlagHas(&setflags
, FLAG_WALLOP
))
1162 if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY
) && MyConnect(sptr
) &&
1163 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_SERVNOTICE
))
1165 ClearServNotice(sptr
);
1166 set_snomask(sptr
, 0, SNO_SET
);
1168 if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY
) &&
1169 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_DEBUG
))
1172 if (MyConnect(sptr
))
1174 if ((FlagHas(&setflags
, FLAG_OPER
) || FlagHas(&setflags
, FLAG_LOCOP
)) &&
1176 det_confs_butmask(sptr
, CONF_CLIENT
& ~CONF_OPERATOR
);
1178 if (SendServNotice(sptr
))
1180 if (tmpmask
!= cli_snomask(sptr
))
1181 set_snomask(sptr
, tmpmask
, SNO_SET
);
1182 if (cli_snomask(sptr
) && snomask_given
)
1183 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1186 set_snomask(sptr
, 0, SNO_SET
);
1189 * Compare new flags with old flags and send string which
1190 * will cause servers to update correctly.
1192 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1196 client_set_privs(sptr
, NULL
); /* may set propagate privilege */
1198 /* remember propagate privilege setting */
1199 if (HasPriv(sptr
, PRIV_PROPAGATE
))
1201 if (FlagHas(&setflags
, FLAG_OPER
) && !IsOper(sptr
))
1203 /* user no longer oper */
1205 client_set_privs(sptr
, NULL
); /* will clear propagate privilege */
1207 if (FlagHas(&setflags
, FLAG_INVISIBLE
) && !IsInvisible(sptr
))
1208 --UserStats
.inv_clients
;
1209 if (!FlagHas(&setflags
, FLAG_INVISIBLE
) && IsInvisible(sptr
))
1210 ++UserStats
.inv_clients
;
1211 if (!FlagHas(&setflags
, FLAG_HIDDENHOST
) && do_host_hiding
)
1212 hide_hostmask(sptr
, FLAG_HIDDENHOST
);
1213 send_umode_out(cptr
, sptr
, &setflags
, prop
);
1218 /** Build a mode string to describe modes for \a cptr.
1219 * @param[in] cptr Some user.
1220 * @return Pointer to a static buffer.
1222 char *umode_str(struct Client
*cptr
)
1224 /* Maximum string size: "owidgrx\0" */
1227 struct Flags c_flags
= cli_flags(cptr
);
1229 if (!HasPriv(cptr
, PRIV_PROPAGATE
))
1230 FlagClr(&c_flags
, FLAG_OPER
);
1232 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1234 if (FlagHas(&c_flags
, userModeList
[i
].flag
) &&
1235 userModeList
[i
].flag
>= FLAG_GLOBAL_UMODES
)
1236 *m
++ = userModeList
[i
].c
;
1239 if (IsAccount(cptr
))
1241 char* t
= cli_user(cptr
)->account
;
1244 while ((*m
++ = *t
++))
1247 if (cli_user(cptr
)->acc_create
) {
1249 Debug((DEBUG_DEBUG
, "Sending timestamped account in user mode for "
1250 "account \"%s\"; timestamp %Tu", cli_user(cptr
)->account
,
1251 cli_user(cptr
)->acc_create
));
1252 ircd_snprintf(0, t
= nbuf
, sizeof(nbuf
), ":%Tu",
1253 cli_user(cptr
)->acc_create
);
1254 m
--; /* back up over previous nul-termination */
1255 while ((*m
++ = *t
++))
1262 return umodeBuf
; /* Note: static buffer, gets
1263 overwritten by send_umode() */
1266 /** Send a mode change string for \a sptr to \a cptr.
1267 * @param[in] cptr Destination of mode change message.
1268 * @param[in] sptr User whose mode has changed.
1269 * @param[in] old Pre-change set of modes for \a sptr.
1270 * @param[in] sendset One of ALL_UMODES, SEND_UMODES_BUT_OPER,
1271 * SEND_UMODES, to select which changed user modes to send.
1273 void send_umode(struct Client
*cptr
, struct Client
*sptr
, struct Flags
*old
,
1279 int what
= MODE_NULL
;
1282 * Build a string in umodeBuf to represent the change in the user's
1283 * mode between the new (cli_flags(sptr)) and 'old', but skipping
1284 * the modes indicated by sendset.
1288 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1290 flag
= userModeList
[i
].flag
;
1291 if (FlagHas(old
, flag
)
1292 == HasFlag(sptr
, flag
))
1298 case SEND_UMODES_BUT_OPER
:
1299 if (flag
== FLAG_OPER
)
1301 /* and fall through */
1303 if (flag
< FLAG_GLOBAL_UMODES
)
1307 if (FlagHas(old
, flag
))
1309 if (what
== MODE_DEL
)
1310 *m
++ = userModeList
[i
].c
;
1315 *m
++ = userModeList
[i
].c
;
1318 else /* !FlagHas(old, flag) */
1320 if (what
== MODE_ADD
)
1321 *m
++ = userModeList
[i
].c
;
1326 *m
++ = userModeList
[i
].c
;
1331 if (*umodeBuf
&& cptr
)
1332 sendcmdto_one(sptr
, CMD_MODE
, cptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
1336 * Check to see if this resembles a sno_mask. It is if 1) there is
1337 * at least one digit and 2) The first digit occurs before the first
1338 * alphabetic character.
1339 * @param[in] word Word to check for sno_mask-ness.
1340 * @return Non-zero if \a word looks like a server notice mask; zero if not.
1342 int is_snomask(char *word
)
1346 for (; *word
; word
++)
1349 else if (IsAlpha(*word
))
1355 /** Update snomask \a oldmask according to \a arg and \a what.
1356 * @param[in] oldmask Original user mask.
1357 * @param[in] arg Update string (either a number or '+'/'-' followed by a number).
1358 * @param[in] what MODE_ADD if adding the mask.
1359 * @return New value of service notice mask.
1361 unsigned int umode_make_snomask(unsigned int oldmask
, char *arg
, int what
)
1363 unsigned int sno_what
;
1364 unsigned int newmask
;
1368 if (what
== MODE_ADD
)
1373 else if (*arg
== '-')
1376 if (what
== MODE_ADD
)
1382 sno_what
= (what
== MODE_ADD
) ? SNO_SET
: SNO_DEL
;
1383 /* pity we don't have strtoul everywhere */
1384 newmask
= (unsigned int)atoi(arg
);
1385 if (sno_what
== SNO_DEL
)
1386 newmask
= oldmask
& ~newmask
;
1387 else if (sno_what
== SNO_ADD
)
1392 /** Remove \a cptr from the singly linked list \a list.
1393 * @param[in] cptr Client to remove from list.
1394 * @param[in,out] list Pointer to head of list containing \a cptr.
1396 static void delfrom_list(struct Client
*cptr
, struct SLink
**list
)
1399 struct SLink
* prv
= NULL
;
1401 for (tmp
= *list
; tmp
; tmp
= tmp
->next
) {
1402 if (tmp
->value
.cptr
== cptr
) {
1404 prv
->next
= tmp
->next
;
1414 /** Set \a cptr's server notice mask, according to \a what.
1415 * @param[in,out] cptr Client whose snomask is updating.
1416 * @param[in] newmask Base value for new snomask.
1417 * @param[in] what One of SNO_ADD, SNO_DEL, SNO_SET, to choose operation.
1419 void set_snomask(struct Client
*cptr
, unsigned int newmask
, int what
)
1421 unsigned int oldmask
, diffmask
; /* unsigned please */
1425 oldmask
= cli_snomask(cptr
);
1427 if (what
== SNO_ADD
)
1429 else if (what
== SNO_DEL
)
1430 newmask
= oldmask
& ~newmask
;
1431 else if (what
!= SNO_SET
) /* absolute set, no math needed */
1432 sendto_opmask_butone(0, SNO_OLDSNO
, "setsnomask called with %d ?!", what
);
1434 newmask
&= (IsAnOper(cptr
) ? SNO_ALL
: SNO_USER
);
1436 diffmask
= oldmask
^ newmask
;
1438 for (i
= 0; diffmask
>> i
; i
++) {
1439 if (((diffmask
>> i
) & 1))
1441 if (((newmask
>> i
) & 1))
1444 tmp
->next
= opsarray
[i
];
1445 tmp
->value
.cptr
= cptr
;
1449 /* not real portable :( */
1450 delfrom_list(cptr
, &opsarray
[i
]);
1453 cli_snomask(cptr
) = newmask
;
1456 /** Check whether \a sptr is allowed to send a message to \a acptr.
1457 * If \a sptr is a remote user, it means some server has an outdated
1458 * SILENCE list for \a acptr, so send the missing SILENCE mask(s) back
1459 * in the direction of \a sptr. Skip the check if \a sptr is a server.
1460 * @param[in] sptr Client trying to send a message.
1461 * @param[in] acptr Destination of message.
1462 * @return Non-zero if \a sptr is SILENCEd by \a acptr, zero if not.
1464 int is_silenced(struct Client
*sptr
, struct Client
*acptr
)
1468 size_t buf_used
, slen
;
1471 if (IsServer(sptr
) || !(user
= cli_user(acptr
))
1472 || !(found
= find_ban(sptr
, user
->silence
)))
1474 assert(!(found
->flags
& BAN_EXCEPTION
));
1475 if (!MyConnect(sptr
)) {
1476 /* Buffer positive silence to send back. */
1477 buf_used
= strlen(found
->banstr
);
1478 memcpy(buf
, found
->banstr
, buf_used
);
1479 /* Add exceptions to buffer. */
1480 for (found
= user
->silence
; found
; found
= found
->next
) {
1481 if (!(found
->flags
& BAN_EXCEPTION
))
1483 slen
= strlen(found
->banstr
);
1484 if (buf_used
+ slen
+ 4 > 400) {
1485 buf
[buf_used
] = '\0';
1486 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1490 buf
[buf_used
++] = ',';
1491 buf
[buf_used
++] = '+';
1492 buf
[buf_used
++] = '~';
1493 memcpy(buf
+ buf_used
, found
->banstr
, slen
);
1496 /* Flush silence buffer. */
1498 buf
[buf_used
] = '\0';
1499 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1506 /** Send RPL_ISUPPORT lines to \a cptr.
1507 * @param[in] cptr Client to send ISUPPORT to.
1511 send_supported(struct Client
*cptr
)
1513 char featurebuf
[512];
1515 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES1
, FEATURESVALUES1
);
1516 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1517 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES2
, FEATURESVALUES2
);
1518 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1520 return 0; /* convenience return, if it's ever needed */