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 1.99.2.1 2006/01/10 02:06:36 entrope Exp $
36 #include "ircd_alloc.h"
37 #include "ircd_auth.h"
38 #include "ircd_chattr.h"
39 #include "ircd_features.h"
41 #include "ircd_reply.h"
42 #include "ircd_snprintf.h"
43 #include "ircd_string.h"
52 #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
);
307 /** Copy a cleaned-up version of a username.
308 * Replace all instances of '~' and "invalid" username characters
309 * (!isIrcUi()) with underscores, truncating at USERLEN or the first
310 * control character. \a dest and \a source may be the same buffer.
311 * @param[out] dest Destination buffer.
312 * @param[in] source Source buffer.
313 * @param[in] tilde If non-zero, prepend a '~' to \a dest.
315 static char *clean_user_id(char *dest
, char *source
, int tilde
)
322 ch
= *s
++; /* Store first character to copy: */
325 *d
++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
328 while (ch
&& !IsCntrl(ch
) && rlen
--)
330 char nch
= *s
++; /* Store next character to copy */
331 *d
++ = IsUserChar(ch
) ? ch
: '_'; /* This possibly overwrites it */
344 * This function is called when both NICK and USER messages
345 * have been accepted for the client, in whatever order. Only
346 * after this the USER message is propagated.
348 * NICK's must be propagated at once when received, although
349 * it would be better to delay them too until full info is
350 * available. Doing it is not so simple though, would have
351 * to implement the following:
353 * 1) user telnets in and gives only "NICK foobar" and waits
354 * 2) another user far away logs in normally with the nick
355 * "foobar" (quite legal, as this server didn't propagate it).
356 * 3) now this server gets nick "foobar" from outside, but
357 * has already the same defined locally. Current server
358 * would just issue "KILL foobar" to clean out dups. But,
359 * this is not fair. It should actually request another
360 * nick from local user or kill him/her...
362 /** Finish registering a user who has sent both NICK and USER.
363 * For local connections, possibly check IAuth; make sure there is a
364 * matching Client config block; clean the username field; check
365 * K/k-lines; check for "hacked" looking usernames; assign a numnick;
366 * and send greeting (WELCOME, ISUPPORT, MOTD, etc).
367 * For all connections, update the invisible user and operator counts;
368 * run IPcheck against their address; and forward the NICK.
370 * @param[in] cptr Client who introduced the user.
371 * @param[in,out] sptr Client who has been fully introduced.
372 * @param[in] nick Client's new nickname.
373 * @param[in] username Client's username.
374 * @return Zero or CPTR_KILLED.
376 int register_user(struct Client
*cptr
, struct Client
*sptr
,
377 const char *nick
, char *username
)
379 struct ConfItem
* aconf
;
383 char c
= 0; /* not alphanum */
384 char d
= 'a'; /* not a digit */
392 short digitgroups
= 0;
393 struct User
* user
= cli_user(sptr
);
397 user
->last
= CurrentTime
;
398 parv
[0] = cli_name(sptr
);
399 parv
[1] = parv
[2] = NULL
;
403 static time_t last_too_many1
;
404 static time_t last_too_many2
;
406 assert(cptr
== sptr
);
407 assert(cli_unreg(sptr
) == 0);
408 if (!IsIAuthed(sptr
)) {
410 return iauth_start_client(iauth_active
, sptr
);
414 switch (conf_check_client(sptr
))
418 case ACR_NO_AUTHORIZATION
:
419 sendto_opmask_butone(0, SNO_UNAUTH
, "Unauthorized connection from %s.",
420 get_client_name(sptr
, HIDE_IP
));
421 ++ServerStats
->is_ref
;
422 return exit_client(cptr
, sptr
, &me
,
423 "No Authorization - use another server");
424 case ACR_TOO_MANY_IN_CLASS
:
425 if (CurrentTime
- last_too_many1
>= (time_t) 60)
427 last_too_many1
= CurrentTime
;
428 sendto_opmask_butone(0, SNO_TOOMANY
, "Too many connections in "
429 "class %s for %s.", get_client_class(sptr
),
430 get_client_name(sptr
, SHOW_IP
));
432 ++ServerStats
->is_ref
;
433 IPcheck_connect_fail(sptr
);
434 return exit_client(cptr
, sptr
, &me
,
435 "Sorry, your connection class is full - try "
436 "again later or try another server");
437 case ACR_TOO_MANY_FROM_IP
:
438 if (CurrentTime
- last_too_many2
>= (time_t) 60)
440 last_too_many2
= CurrentTime
;
441 sendto_opmask_butone(0, SNO_TOOMANY
, "Too many connections from "
443 get_client_name(sptr
, SHOW_IP
));
445 ++ServerStats
->is_ref
;
446 return exit_client(cptr
, sptr
, &me
,
447 "Too many connections from your host");
448 case ACR_ALREADY_AUTHORIZED
:
449 /* Can this ever happen? */
451 ++ServerStats
->is_ref
;
452 IPcheck_connect_fail(sptr
);
453 return exit_client(cptr
, sptr
, &me
, "Unknown error -- Try again");
455 ircd_strncpy(user
->host
, cli_sockhost(sptr
), HOSTLEN
);
456 ircd_strncpy(user
->realhost
, cli_sockhost(sptr
), HOSTLEN
);
457 aconf
= cli_confs(sptr
)->value
.aconf
;
459 clean_user_id(user
->username
,
460 HasFlag(sptr
, FLAG_GOTID
) ? cli_username(sptr
) : username
,
461 HasFlag(sptr
, FLAG_DOID
) && !HasFlag(sptr
, FLAG_GOTID
));
463 if ((user
->username
[0] == '\0')
464 || ((user
->username
[0] == '~') && (user
->username
[1] == '\000')))
465 return exit_client(cptr
, sptr
, &me
, "USER: Bogus userid.");
467 if (!EmptyString(aconf
->passwd
)
468 && strcmp(cli_passwd(sptr
), aconf
->passwd
))
470 ServerStats
->is_ref
++;
471 send_reply(sptr
, ERR_PASSWDMISMATCH
);
472 return exit_client(cptr
, sptr
, &me
, "Bad Password");
474 memset(cli_passwd(sptr
), 0, sizeof(cli_passwd(sptr
)));
476 * following block for the benefit of time-dependent K:-lines
478 killreason
= find_kill(sptr
);
480 ServerStats
->is_ref
++;
481 return exit_client(cptr
, sptr
, &me
,
482 (killreason
== -1 ? "K-lined" : "G-lined"));
485 * Check for mixed case usernames, meaning probably hacked. Jon2 3-94
486 * Summary of rules now implemented in this patch: Ensor 11-94
487 * In a mixed-case name, if first char is upper, one more upper may
488 * appear anywhere. (A mixed-case name *must* have an upper first
489 * char, and may have one other upper.)
490 * A third upper may appear if all 3 appear at the beginning of the
491 * name, separated only by "others" (-/_/.).
492 * A single group of digits is allowed anywhere.
493 * Two groups of digits are allowed if at least one of the groups is
494 * at the beginning or the end.
495 * Only one '-', '_', or '.' is allowed (or two, if not consecutive).
496 * But not as the first or last char.
497 * No other special characters are allowed.
498 * Name must contain at least one letter.
500 tmpstr2
= tmpstr
= (username
[0] == '~' ? &username
[1] : username
);
501 while (*tmpstr
&& !badid
)
513 if ((leadcaps
|| pos
== 1) && !lower
&& !digits
)
519 if (pos
== 1 || !IsDigit(d
))
526 else if (c
== '-' || c
== '_' || c
== '.')
531 else if (d
== '-' || d
== '_' || d
== '.' || other
> 2)
540 if (lower
&& upper
&& (!leadcaps
|| leadcaps
> 3 ||
541 (upper
> 2 && upper
> leadcaps
)))
543 else if (digitgroups
== 2 && !(IsDigit(tmpstr2
[0]) || IsDigit(c
)))
545 else if ((!lower
&& !upper
) || !IsAlnum(c
))
548 if (badid
&& (!HasFlag(sptr
, FLAG_GOTID
) ||
549 strcmp(cli_username(sptr
), username
) != 0))
551 ServerStats
->is_ref
++;
553 send_reply(cptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
554 ":Your username is invalid.");
555 send_reply(cptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
556 ":Connect with your real username, in lowercase.");
557 send_reply(cptr
, SND_EXPLICIT
| ERR_INVALIDUSERNAME
,
558 ":If your mail address were foo@bar.com, your username "
560 return exit_client(cptr
, sptr
, &me
, "USER: Bad username");
562 Count_unknownbecomesclient(sptr
, UserStats
);
565 cli_handler(sptr
) = CLIENT_HANDLER
;
566 SetLocalNumNick(sptr
);
569 feature_str(FEAT_NETWORK
),
570 feature_str(FEAT_PROVIDER
) ? " via " : "",
571 feature_str(FEAT_PROVIDER
) ? feature_str(FEAT_PROVIDER
) : "",
574 * This is a duplicate of the NOTICE but see below...
576 send_reply(sptr
, RPL_YOURHOST
, cli_name(&me
), version
);
577 send_reply(sptr
, RPL_CREATED
, creation
);
578 send_reply(sptr
, RPL_MYINFO
, cli_name(&me
), version
, infousermodes
,
579 infochanmodes
, infochanmodeswithparams
);
580 send_supported(sptr
);
581 m_lusers(sptr
, sptr
, 1, parv
);
584 if (cli_snomask(sptr
) & SNO_NOISY
)
585 set_snomask(sptr
, cli_snomask(sptr
) & SNO_NOISY
, SNO_ADD
);
586 if (feature_bool(FEAT_CONNEXIT_NOTICES
))
587 sendto_opmask_butone(0, SNO_CONNEXIT
,
588 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s%s>",
589 cli_name(sptr
), user
->username
, user
->host
,
590 cli_sock_ip(sptr
), get_client_class(sptr
),
591 cli_info(sptr
), NumNick(cptr
) /* two %s's */);
593 IPcheck_connect_succeeded(sptr
);
595 * Set user's initial modes
597 tmpstr
= (char*)client_get_default_umode(sptr
);
598 if (tmpstr
) for (; *tmpstr
; ++tmpstr
) {
601 if (!feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY
)) {
603 set_snomask(sptr
, SNO_DEFAULT
, SNO_SET
);
607 if (!feature_bool(FEAT_WALLOPS_OPER_ONLY
))
617 if (!feature_bool(FEAT_HIS_DEBUG_OPER_ONLY
))
624 struct Client
*acptr
;
626 ircd_strncpy(user
->username
, username
, USERLEN
);
627 Count_newremoteclient(UserStats
, user
->server
);
629 acptr
= user
->server
;
630 if (cli_from(acptr
) != cli_from(sptr
))
632 sendcmdto_one(&me
, CMD_KILL
, cptr
, "%C :%s (%s != %s[%s])",
633 sptr
, cli_name(&me
), cli_name(user
->server
), cli_name(cli_from(acptr
)),
634 cli_sockhost(cli_from(acptr
)));
635 SetFlag(sptr
, FLAG_KILLED
);
636 return exit_client(cptr
, sptr
, &me
, "NICK server wrong direction");
638 else if (HasFlag(acptr
, FLAG_TS8
))
639 SetFlag(sptr
, FLAG_TS8
);
642 * Check to see if this user is being propagated
643 * as part of a net.burst, or is using protocol 9.
644 * FIXME: This can be sped up - its stupid to check it for
645 * every NICK message in a burst again --Run.
647 for (; acptr
!= &me
; acptr
= cli_serv(acptr
)->up
)
649 if (IsBurst(acptr
) || Protocol(acptr
) < 10)
652 if (!IPcheck_remote_connect(sptr
, (acptr
!= &me
)))
655 * We ran out of bits to count this
657 sendcmdto_one(&me
, CMD_KILL
, sptr
, "%C :%s (Too many connections from your host -- Ghost)",
658 sptr
, cli_name(&me
));
659 return exit_client(cptr
, sptr
, &me
,"Too many connections from your host -- throttled");
664 if (IsInvisible(sptr
))
665 ++UserStats
.inv_clients
;
669 tmpstr
= umode_str(sptr
);
670 /* Send full IP address to IPv6-grokking servers. */
671 sendcmdto_flag_serv_butone(user
->server
, CMD_NICK
, cptr
,
672 FLAG_IPV6
, FLAG_LAST_FLAG
,
673 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
674 nick
, cli_hopcount(sptr
) + 1, cli_lastnick(sptr
),
675 user
->username
, user
->realhost
,
676 *tmpstr
? "+" : "", tmpstr
, *tmpstr
? " " : "",
677 iptobase64(ip_base64
, &cli_ip(sptr
), sizeof(ip_base64
), 1),
678 NumNick(sptr
), cli_info(sptr
));
679 /* Send fake IPv6 addresses to pre-IPv6 servers. */
680 sendcmdto_flag_serv_butone(user
->server
, CMD_NICK
, cptr
,
681 FLAG_LAST_FLAG
, FLAG_IPV6
,
682 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
683 nick
, cli_hopcount(sptr
) + 1, cli_lastnick(sptr
),
684 user
->username
, user
->realhost
,
685 *tmpstr
? "+" : "", tmpstr
, *tmpstr
? " " : "",
686 iptobase64(ip_base64
, &cli_ip(sptr
), sizeof(ip_base64
), 0),
687 NumNick(sptr
), cli_info(sptr
));
689 /* Send user mode to client */
692 static struct Flags flags
; /* automatically initialized to zeros */
693 /* To avoid sending +r to the client due to auth-on-connect, set
694 * the "old" FLAG_ACCOUNT bit to match the client's value.
697 FlagSet(&flags
, FLAG_ACCOUNT
);
699 FlagClr(&flags
, FLAG_ACCOUNT
);
700 send_umode(cptr
, sptr
, &flags
, ALL_UMODES
);
701 if ((cli_snomask(sptr
) != SNO_DEFAULT
) && HasFlag(sptr
, FLAG_SERVNOTICE
))
702 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
707 /** List of user mode characters. */
708 static const struct UserMode
{
709 unsigned int flag
; /**< User mode constant. */
710 char c
; /**< Character corresponding to the mode. */
714 { FLAG_INVISIBLE
, 'i' },
715 { FLAG_WALLOP
, 'w' },
716 { FLAG_SERVNOTICE
, 's' },
718 { FLAG_CHSERV
, 'k' },
720 { FLAG_ACCOUNT
, 'r' },
721 { FLAG_HIDDENHOST
, 'x' }
724 /** Length of #userModeList. */
725 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
728 * XXX - find a way to get rid of this
730 /** Nasty global buffer used for communications with umode_str() and others. */
731 static char umodeBuf
[BUFSIZE
];
733 /** Try to set a user's nickname.
734 * If \a sptr is a server, the client is being introduced for the first time.
735 * @param[in] cptr Client to set nickname.
736 * @param[in] sptr Client sending the NICK.
737 * @param[in] nick New nickname.
738 * @param[in] parc Number of arguments to NICK.
739 * @param[in] parv Argument list to NICK.
740 * @return CPTR_KILLED if \a cptr was killed, else 0.
742 int set_nick_name(struct Client
* cptr
, struct Client
* sptr
,
743 const char* nick
, int parc
, char* parv
[])
745 if (IsServer(sptr
)) {
747 const char* account
= 0;
751 * A server introducing a new client, change source
753 struct Client
* new_client
= make_client(cptr
, STAT_UNKNOWN
);
754 assert(0 != new_client
);
756 cli_hopcount(new_client
) = atoi(parv
[2]);
757 cli_lastnick(new_client
) = atoi(parv
[3]);
758 if (Protocol(cptr
) > 9 && parc
> 7 && *parv
[6] == '+')
760 for (p
= parv
[6] + 1; *p
; p
++)
762 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
764 if (userModeList
[i
].c
== *p
)
766 SetFlag(new_client
, userModeList
[i
].flag
);
767 if (userModeList
[i
].flag
== FLAG_ACCOUNT
)
774 client_set_privs(new_client
, NULL
); /* set privs on user */
778 strcpy(cli_name(new_client
), nick
);
779 cli_user(new_client
) = make_user(new_client
);
780 cli_user(new_client
)->server
= sptr
;
781 SetRemoteNumNick(new_client
, parv
[parc
- 2]);
783 * IP# of remote client
785 base64toip(parv
[parc
- 3], &cli_ip(new_client
));
787 add_client_to_list(new_client
);
788 hAddClient(new_client
);
790 cli_serv(sptr
)->ghost
= 0; /* :server NICK means end of net.burst */
791 ircd_strncpy(cli_username(new_client
), parv
[4], USERLEN
);
792 ircd_strncpy(cli_user(new_client
)->host
, parv
[5], HOSTLEN
);
793 ircd_strncpy(cli_user(new_client
)->realhost
, parv
[5], HOSTLEN
);
794 ircd_strncpy(cli_info(new_client
), parv
[parc
- 1], REALLEN
);
796 int len
= ACCOUNTLEN
;
797 if ((p
= strchr(account
, ':'))) {
798 len
= (p
++) - account
;
799 cli_user(new_client
)->acc_create
= atoi(p
);
800 Debug((DEBUG_DEBUG
, "Received timestamped account in user mode; "
801 "account \"%s\", timestamp %Tu", account
,
802 cli_user(new_client
)->acc_create
));
804 ircd_strncpy(cli_user(new_client
)->account
, account
, len
);
806 if (HasHiddenHost(new_client
))
807 ircd_snprintf(0, cli_user(new_client
)->host
, HOSTLEN
, "%s.%s",
808 account
, feature_str(FEAT_HIDDEN_HOST
));
810 return register_user(cptr
, new_client
, cli_name(new_client
), parv
[4]);
812 else if ((cli_name(sptr
))[0]) {
814 * Client changing its nick
816 * If the client belongs to me, then check to see
817 * if client is on any channels where it is currently
818 * banned. If so, do not allow the nick change to occur.
821 const char* channel_name
;
822 struct Membership
*member
;
823 if ((channel_name
= find_no_nickchange_channel(sptr
))) {
824 return send_reply(cptr
, ERR_BANNICKCHANGE
, channel_name
);
827 * Refuse nick change if the last nick change was less
828 * then 30 seconds ago. This is intended to get rid of
829 * clone bots doing NICK FLOOD. -SeKs
830 * If someone didn't change their nick for more then 60 seconds
831 * however, allow to do two nick changes immediately after another
832 * before limiting the nick flood. -Run
834 if (CurrentTime
< cli_nextnick(cptr
))
836 cli_nextnick(cptr
) += 2;
837 send_reply(cptr
, ERR_NICKTOOFAST
, parv
[1],
838 cli_nextnick(cptr
) - CurrentTime
);
839 /* Send error message */
840 sendcmdto_one(cptr
, CMD_NICK
, cptr
, "%s", cli_name(cptr
));
841 /* bounce NICK to user */
842 return 0; /* ignore nick change! */
845 /* Limit total to 1 change per NICK_DELAY seconds: */
846 cli_nextnick(cptr
) += NICK_DELAY
;
847 /* However allow _maximal_ 1 extra consecutive nick change: */
848 if (cli_nextnick(cptr
) < CurrentTime
)
849 cli_nextnick(cptr
) = CurrentTime
;
851 /* Invalidate all bans against the user so we check them again */
852 for (member
= (cli_user(cptr
))->channel
; member
;
853 member
= member
->next_channel
)
854 ClearBanValid(member
);
857 * Also set 'lastnick' to current time, if changed.
859 if (0 != ircd_strcmp(parv
[0], nick
))
860 cli_lastnick(sptr
) = (sptr
== cptr
) ? TStime() : atoi(parv
[2]);
863 * Client just changing his/her nick. If he/she is
864 * on a channel, send note of change to all clients
865 * on that channel. Propagate notice to other servers.
868 sendcmdto_common_channels_butone(sptr
, CMD_NICK
, NULL
, ":%s", nick
);
869 add_history(sptr
, 1);
870 sendcmdto_serv_butone(sptr
, CMD_NICK
, cptr
, "%s %Tu", nick
,
874 sendcmdto_one(sptr
, CMD_NICK
, sptr
, ":%s", nick
);
876 if ((cli_name(sptr
))[0])
878 strcpy(cli_name(sptr
), nick
);
882 /* Local client setting NICK the first time */
884 strcpy(cli_name(sptr
), nick
);
885 if (!cli_user(sptr
)) {
886 cli_user(sptr
) = make_user(sptr
);
887 cli_user(sptr
)->server
= &me
;
891 cli_unreg(sptr
) &= ~CLIREG_NICK
; /* nickname now set */
894 * If the client hasn't gotten a cookie-ping yet,
895 * choose a cookie and send it. -record!jegelhof@cloud9.net
897 if (!cli_cookie(sptr
)) {
899 cli_cookie(sptr
) = (ircrandom() & 0x7fffffff);
900 } while (!cli_cookie(sptr
));
901 sendrawto_one(cptr
, MSG_PING
" :%u", cli_cookie(sptr
));
903 else if (!cli_unreg(sptr
)) {
905 * USER and PONG already received, now we have NICK.
906 * register_user may reject the client and call exit_client
907 * for it - must test this and exit m_nick too !
909 cli_lastnick(sptr
) = TStime(); /* Always local client */
910 if (register_user(cptr
, sptr
, nick
, cli_user(sptr
)->username
) == CPTR_KILLED
)
917 /** Calculate the hash value for a target.
918 * @param[in] target Pointer to target, cast to unsigned int.
919 * @return Hash value constructed from the pointer.
921 static unsigned char hash_target(unsigned int target
)
923 return (unsigned char) (target
>> 16) ^ (target
>> 8);
926 /** Records \a target as a recent target for \a sptr.
927 * @param[in] sptr User who has sent to a new target.
928 * @param[in] target Target to add.
931 add_target(struct Client
*sptr
, void *target
)
933 /* Ok, this shouldn't work esp on alpha
935 unsigned char hash
= hash_target((unsigned long) target
);
936 unsigned char* targets
;
939 assert(cli_local(sptr
));
941 targets
= cli_targets(sptr
);
946 for (i
= 0; i
< MAXTARGETS
; ++i
) {
947 if (targets
[i
] == hash
)
953 memmove(&targets
[RESERVEDTARGETS
+ 1],
954 &targets
[RESERVEDTARGETS
], MAXTARGETS
- RESERVEDTARGETS
- 1);
955 targets
[RESERVEDTARGETS
] = hash
;
958 /** Check whether \a sptr can send to or join \a target yet.
959 * @param[in] sptr User trying to join a channel or send a message.
960 * @param[in] target Target of the join or message.
961 * @param[in] name Name of the target.
962 * @param[in] created If non-zero, trying to join a new channel.
963 * @return Non-zero if too many target changes; zero if okay to send.
965 int check_target_limit(struct Client
*sptr
, void *target
, const char *name
,
968 unsigned char hash
= hash_target((unsigned long) target
);
970 unsigned char* targets
;
973 assert(cli_local(sptr
));
974 targets
= cli_targets(sptr
);
976 /* If user is invited to channel, give him/her a free target */
977 if (IsChannelName(name
) && IsInvited(sptr
, target
))
981 * Same target as last time?
983 if (targets
[0] == hash
)
985 for (i
= 1; i
< MAXTARGETS
; ++i
) {
986 if (targets
[i
] == hash
) {
987 memmove(&targets
[1], &targets
[0], i
);
996 if (CurrentTime
< cli_nexttarget(sptr
)) {
997 if (cli_nexttarget(sptr
) - CurrentTime
< TARGET_DELAY
+ 8) {
1001 cli_nexttarget(sptr
) += 2;
1002 send_reply(sptr
, ERR_TARGETTOOFAST
, name
,
1003 cli_nexttarget(sptr
) - CurrentTime
);
1008 cli_nexttarget(sptr
) += TARGET_DELAY
;
1009 if (cli_nexttarget(sptr
) < CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1)))
1010 cli_nexttarget(sptr
) = CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1));
1013 memmove(&targets
[1], &targets
[0], MAXTARGETS
- 1);
1018 /** Allows a channel operator to avoid target change checks when
1019 * sending messages to users on their channel.
1020 * @param[in] source User sending the message.
1021 * @param[in] nick Destination of the message.
1022 * @param[in] channel Name of channel being sent to.
1023 * @param[in] text Message to send.
1024 * @param[in] is_notice If non-zero, use CNOTICE instead of CPRIVMSG.
1026 /* Added 971023 by Run. */
1027 int whisper(struct Client
* source
, const char* nick
, const char* channel
,
1028 const char* text
, int is_notice
)
1030 struct Client
* dest
;
1031 struct Channel
* chptr
;
1032 struct Membership
* membership
;
1034 assert(0 != source
);
1036 assert(0 != channel
);
1037 assert(MyUser(source
));
1039 if (!(dest
= FindUser(nick
))) {
1040 return send_reply(source
, ERR_NOSUCHNICK
, nick
);
1042 if (!(chptr
= FindChannel(channel
))) {
1043 return send_reply(source
, ERR_NOSUCHCHANNEL
, channel
);
1046 * compare both users channel lists, instead of the channels user list
1047 * since the link is the same, this should be a little faster for channels
1048 * with a lot of users
1050 for (membership
= cli_user(source
)->channel
; membership
; membership
= membership
->next_channel
) {
1051 if (chptr
== membership
->channel
)
1054 if (0 == membership
) {
1055 return send_reply(source
, ERR_NOTONCHANNEL
, chptr
->chname
);
1057 if (!IsVoicedOrOpped(membership
)) {
1058 return send_reply(source
, ERR_VOICENEEDED
, chptr
->chname
);
1061 * lookup channel in destination
1063 assert(0 != cli_user(dest
));
1064 for (membership
= cli_user(dest
)->channel
; membership
; membership
= membership
->next_channel
) {
1065 if (chptr
== membership
->channel
)
1068 if (0 == membership
|| IsZombie(membership
)) {
1069 return send_reply(source
, ERR_USERNOTINCHANNEL
, cli_name(dest
), chptr
->chname
);
1071 if (is_silenced(source
, dest
))
1074 if (cli_user(dest
)->away
)
1075 send_reply(source
, RPL_AWAY
, cli_name(dest
), cli_user(dest
)->away
);
1077 sendcmdto_one(source
, CMD_NOTICE
, dest
, "%C :%s", dest
, text
);
1079 sendcmdto_one(source
, CMD_PRIVATE
, dest
, "%C :%s", dest
, text
);
1084 /** Send a user mode change for \a cptr to neighboring servers.
1085 * @param[in] cptr User whose mode is changing.
1086 * @param[in] sptr Client who sent us the mode change message.
1087 * @param[in] old Prior set of user flags.
1088 * @param[in] prop If non-zero, also include FLAG_OPER.
1090 void send_umode_out(struct Client
*cptr
, struct Client
*sptr
,
1091 struct Flags
*old
, int prop
)
1094 struct Client
*acptr
;
1096 send_umode(NULL
, sptr
, old
, prop
? SEND_UMODES
: SEND_UMODES_BUT_OPER
);
1098 for (i
= HighestFd
; i
>= 0; i
--)
1100 if ((acptr
= LocalClientArray
[i
]) && IsServer(acptr
) &&
1101 (acptr
!= cptr
) && (acptr
!= sptr
) && *umodeBuf
)
1102 sendcmdto_one(sptr
, CMD_MODE
, acptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
1104 if (cptr
&& MyUser(cptr
))
1105 send_umode(cptr
, sptr
, old
, ALL_UMODES
);
1109 /** Call \a fmt for each Client named in \a names.
1110 * @param[in] sptr Client requesting information.
1111 * @param[in] names Space-delimited list of nicknames.
1112 * @param[in] rpl Base reply string for messages.
1113 * @param[in] fmt Formatting callback function.
1115 void send_user_info(struct Client
* sptr
, char* names
, int rpl
, InfoFormatter fmt
)
1120 int users_found
= 0;
1121 struct Client
* acptr
;
1128 mb
= msgq_make(sptr
, rpl_str(rpl
), cli_name(&me
), cli_name(sptr
));
1130 for (name
= ircd_strtok(&p
, names
, " "); name
; name
= ircd_strtok(&p
, 0, " ")) {
1131 if ((acptr
= FindUser(name
))) {
1133 msgq_append(0, mb
, " ");
1134 (*fmt
)(acptr
, sptr
, mb
);
1136 if (5 == ++arg_count
)
1139 send_buffer(sptr
, mb
, 0);
1143 /** Set \a flag on \a cptr and possibly hide the client's hostmask.
1144 * @param[in,out] cptr User who is getting a new flag.
1145 * @param[in] flag Some flag that affects host-hiding (FLAG_HIDDENHOST, FLAG_ACCOUNT).
1149 hide_hostmask(struct Client
*cptr
, unsigned int flag
)
1151 struct Membership
*chan
;
1154 case FLAG_HIDDENHOST
:
1155 /* Local users cannot set +x unless FEAT_HOST_HIDING is true. */
1156 if (MyConnect(cptr
) && !feature_bool(FEAT_HOST_HIDING
))
1160 /* Invalidate all bans against the user so we check them again */
1161 for (chan
= (cli_user(cptr
))->channel
; chan
;
1162 chan
= chan
->next_channel
)
1163 ClearBanValid(chan
);
1169 SetFlag(cptr
, flag
);
1170 if (!HasFlag(cptr
, FLAG_HIDDENHOST
) || !HasFlag(cptr
, FLAG_ACCOUNT
))
1173 sendcmdto_common_channels_butone(cptr
, CMD_QUIT
, cptr
, ":Registered");
1174 ircd_snprintf(0, cli_user(cptr
)->host
, HOSTLEN
, "%s.%s",
1175 cli_user(cptr
)->account
, feature_str(FEAT_HIDDEN_HOST
));
1177 /* ok, the client is now fully hidden, so let them know -- hikari */
1178 if (MyConnect(cptr
))
1179 send_reply(cptr
, RPL_HOSTHIDDEN
, cli_user(cptr
)->host
);
1182 * Go through all channels the client was on, rejoin him
1183 * and set the modes, if any
1185 for (chan
= cli_user(cptr
)->channel
; chan
; chan
= chan
->next_channel
)
1189 /* Send a JOIN unless the user's join has been delayed. */
1190 if (!IsDelayedJoin(chan
))
1191 sendcmdto_channel_butserv_butone(cptr
, CMD_JOIN
, chan
->channel
, cptr
, 0,
1192 "%H", chan
->channel
);
1193 if (IsChanOp(chan
) && HasVoice(chan
))
1194 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
1195 "%H +ov %C %C", chan
->channel
, cptr
,
1197 else if (IsChanOp(chan
) || HasVoice(chan
))
1198 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
1199 "%H +%c %C", chan
->channel
, IsChanOp(chan
) ? 'o' : 'v', cptr
);
1204 /** Set a user's mode. This function checks that \a cptr is trying to
1205 * set his own mode, prevents local users from setting inappropriate
1206 * modes through this function, and applies any other side effects of
1207 * a successful mode change.
1209 * @param[in,out] cptr User setting someone's mode.
1210 * @param[in] sptr Client who sent the mode change message.
1211 * @param[in] parc Number of parameters in \a parv.
1212 * @param[in] parv Parameters to MODE.
1215 int set_user_mode(struct Client
*cptr
, struct Client
*sptr
, int parc
, char *parv
[])
1219 struct Client
*acptr
;
1222 struct Flags setflags
;
1223 unsigned int tmpmask
= 0;
1224 int snomask_given
= 0;
1227 int do_host_hiding
= 0;
1232 return need_more_params(sptr
, "MODE");
1234 if (!(acptr
= FindUser(parv
[1])))
1236 if (MyConnect(sptr
))
1237 send_reply(sptr
, ERR_NOSUCHCHANNEL
, parv
[1]);
1241 if (IsServer(sptr
) || sptr
!= acptr
)
1244 sendwallto_group_butone(&me
, WALL_WALLOPS
, 0,
1245 "MODE for User %s from %s!%s", parv
[1],
1246 cli_name(cptr
), cli_name(sptr
));
1248 send_reply(sptr
, ERR_USERSDONTMATCH
);
1256 for (i
= 0; i
< USERMODELIST_SIZE
; i
++)
1258 if (HasFlag(sptr
, userModeList
[i
].flag
) &&
1259 userModeList
[i
].flag
!= FLAG_ACCOUNT
)
1260 *m
++ = userModeList
[i
].c
;
1263 send_reply(sptr
, RPL_UMODEIS
, buf
);
1264 if (HasFlag(sptr
, FLAG_SERVNOTICE
) && MyConnect(sptr
)
1265 && cli_snomask(sptr
) !=
1266 (unsigned int)(IsOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
))
1267 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1272 * find flags already set for user
1273 * why not just copy them?
1275 setflags
= cli_flags(sptr
);
1277 if (MyConnect(sptr
))
1278 tmpmask
= cli_snomask(sptr
);
1281 * parse mode change string(s)
1283 for (p
= &parv
[2]; *p
; p
++) { /* p is changed in loop too */
1284 for (m
= *p
; *m
; m
++) {
1293 if (*(p
+ 1) && is_snomask(*(p
+ 1))) {
1295 tmpmask
= umode_make_snomask(tmpmask
, *++p
, what
);
1296 tmpmask
&= (IsAnOper(sptr
) ? SNO_ALL
: SNO_USER
);
1299 tmpmask
= (what
== MODE_ADD
) ?
1300 (IsAnOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
) : 0;
1302 SetServNotice(sptr
);
1304 ClearServNotice(sptr
);
1307 if (what
== MODE_ADD
)
1313 if (what
== MODE_ADD
)
1316 ClrFlag(sptr
, FLAG_OPER
);
1317 ClrFlag(sptr
, FLAG_LOCOP
);
1318 if (MyConnect(sptr
))
1320 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1321 cli_handler(sptr
) = CLIENT_HANDLER
;
1326 if (what
== MODE_ADD
)
1330 ClrFlag(sptr
, FLAG_OPER
);
1331 ClrFlag(sptr
, FLAG_LOCOP
);
1332 if (MyConnect(sptr
))
1334 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1335 cli_handler(sptr
) = CLIENT_HANDLER
;
1340 if (what
== MODE_ADD
)
1343 ClearInvisible(sptr
);
1346 if (what
== MODE_ADD
)
1352 if (what
== MODE_ADD
)
1353 SetChannelService(sptr
);
1355 ClearChannelService(sptr
);
1358 if (what
== MODE_ADD
)
1364 if (what
== MODE_ADD
)
1368 send_reply(sptr
, ERR_UMODEUNKNOWNFLAG
, *m
);
1374 * Evaluate rules for new user mode
1375 * Stop users making themselves operators too easily:
1377 if (!IsServer(cptr
))
1379 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1381 if (!FlagHas(&setflags
, FLAG_LOCOP
) && IsLocOp(sptr
))
1384 * new umode; servers can set it, local users cannot;
1385 * prevents users from /kick'ing or /mode -o'ing
1387 if (!FlagHas(&setflags
, FLAG_CHSERV
))
1388 ClearChannelService(sptr
);
1390 * only send wallops to opers
1392 if (feature_bool(FEAT_WALLOPS_OPER_ONLY
) && !IsAnOper(sptr
) &&
1393 !FlagHas(&setflags
, FLAG_WALLOP
))
1395 if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY
) && MyConnect(sptr
) &&
1396 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_SERVNOTICE
))
1398 ClearServNotice(sptr
);
1399 set_snomask(sptr
, 0, SNO_SET
);
1401 if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY
) &&
1402 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_DEBUG
))
1405 if (MyConnect(sptr
))
1407 if ((FlagHas(&setflags
, FLAG_OPER
) || FlagHas(&setflags
, FLAG_LOCOP
)) &&
1409 det_confs_butmask(sptr
, CONF_CLIENT
& ~CONF_OPERATOR
);
1411 if (SendServNotice(sptr
))
1413 if (tmpmask
!= cli_snomask(sptr
))
1414 set_snomask(sptr
, tmpmask
, SNO_SET
);
1415 if (cli_snomask(sptr
) && snomask_given
)
1416 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1419 set_snomask(sptr
, 0, SNO_SET
);
1422 * Compare new flags with old flags and send string which
1423 * will cause servers to update correctly.
1425 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1429 client_set_privs(sptr
, NULL
); /* may set propagate privilege */
1431 /* remember propagate privilege setting */
1432 if (HasPriv(sptr
, PRIV_PROPAGATE
))
1434 if (FlagHas(&setflags
, FLAG_OPER
) && !IsOper(sptr
))
1436 /* user no longer oper */
1438 client_set_privs(sptr
, NULL
); /* will clear propagate privilege */
1440 if (FlagHas(&setflags
, FLAG_INVISIBLE
) && !IsInvisible(sptr
))
1441 --UserStats
.inv_clients
;
1442 if (!FlagHas(&setflags
, FLAG_INVISIBLE
) && IsInvisible(sptr
))
1443 ++UserStats
.inv_clients
;
1444 if (!FlagHas(&setflags
, FLAG_HIDDENHOST
) && do_host_hiding
)
1445 hide_hostmask(sptr
, FLAG_HIDDENHOST
);
1446 send_umode_out(cptr
, sptr
, &setflags
, prop
);
1451 /** Build a mode string to describe modes for \a cptr.
1452 * @param[in] cptr Some user.
1453 * @return Pointer to a static buffer.
1455 char *umode_str(struct Client
*cptr
)
1457 /* Maximum string size: "owidgrx\0" */
1460 struct Flags c_flags
= cli_flags(cptr
);
1462 if (!HasPriv(cptr
, PRIV_PROPAGATE
))
1463 FlagClr(&c_flags
, FLAG_OPER
);
1465 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1467 if (FlagHas(&c_flags
, userModeList
[i
].flag
) &&
1468 userModeList
[i
].flag
>= FLAG_GLOBAL_UMODES
)
1469 *m
++ = userModeList
[i
].c
;
1472 if (IsAccount(cptr
))
1474 char* t
= cli_user(cptr
)->account
;
1477 while ((*m
++ = *t
++))
1480 if (cli_user(cptr
)->acc_create
) {
1482 Debug((DEBUG_DEBUG
, "Sending timestamped account in user mode for "
1483 "account \"%s\"; timestamp %Tu", cli_user(cptr
)->account
,
1484 cli_user(cptr
)->acc_create
));
1485 ircd_snprintf(0, t
= nbuf
, sizeof(nbuf
), ":%Tu",
1486 cli_user(cptr
)->acc_create
);
1487 m
--; /* back up over previous nul-termination */
1488 while ((*m
++ = *t
++))
1495 return umodeBuf
; /* Note: static buffer, gets
1496 overwritten by send_umode() */
1499 /** Send a mode change string for \a sptr to \a cptr.
1500 * @param[in] cptr Destination of mode change message.
1501 * @param[in] sptr User whose mode has changed.
1502 * @param[in] old Pre-change set of modes for \a sptr.
1503 * @param[in] sendset One of ALL_UMODES, SEND_UMODES_BUT_OPER,
1504 * SEND_UMODES, to select which changed user modes to send.
1506 void send_umode(struct Client
*cptr
, struct Client
*sptr
, struct Flags
*old
,
1512 int what
= MODE_NULL
;
1515 * Build a string in umodeBuf to represent the change in the user's
1516 * mode between the new (cli_flags(sptr)) and 'old', but skipping
1517 * the modes indicated by sendset.
1521 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1523 flag
= userModeList
[i
].flag
;
1524 if (FlagHas(old
, flag
)
1525 == HasFlag(sptr
, flag
))
1531 case SEND_UMODES_BUT_OPER
:
1532 if (flag
== FLAG_OPER
)
1534 /* and fall through */
1536 if (flag
< FLAG_GLOBAL_UMODES
)
1540 if (FlagHas(old
, flag
))
1542 if (what
== MODE_DEL
)
1543 *m
++ = userModeList
[i
].c
;
1548 *m
++ = userModeList
[i
].c
;
1551 else /* !FlagHas(old, flag) */
1553 if (what
== MODE_ADD
)
1554 *m
++ = userModeList
[i
].c
;
1559 *m
++ = userModeList
[i
].c
;
1564 if (*umodeBuf
&& cptr
)
1565 sendcmdto_one(sptr
, CMD_MODE
, cptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
1569 * Check to see if this resembles a sno_mask. It is if 1) there is
1570 * at least one digit and 2) The first digit occurs before the first
1571 * alphabetic character.
1572 * @param[in] word Word to check for sno_mask-ness.
1573 * @return Non-zero if \a word looks like a server notice mask; zero if not.
1575 int is_snomask(char *word
)
1579 for (; *word
; word
++)
1582 else if (IsAlpha(*word
))
1588 /** Update snomask \a oldmask according to \a arg and \a what.
1589 * @param[in] oldmask Original user mask.
1590 * @param[in] arg Update string (either a number or '+'/'-' followed by a number).
1591 * @param[in] what MODE_ADD if adding the mask.
1592 * @return New value of service notice mask.
1594 unsigned int umode_make_snomask(unsigned int oldmask
, char *arg
, int what
)
1596 unsigned int sno_what
;
1597 unsigned int newmask
;
1601 if (what
== MODE_ADD
)
1606 else if (*arg
== '-')
1609 if (what
== MODE_ADD
)
1615 sno_what
= (what
== MODE_ADD
) ? SNO_SET
: SNO_DEL
;
1616 /* pity we don't have strtoul everywhere */
1617 newmask
= (unsigned int)atoi(arg
);
1618 if (sno_what
== SNO_DEL
)
1619 newmask
= oldmask
& ~newmask
;
1620 else if (sno_what
== SNO_ADD
)
1625 /** Remove \a cptr from the singly linked list \a list.
1626 * @param[in] cptr Client to remove from list.
1627 * @param[in,out] list Pointer to head of list containing \a cptr.
1629 static void delfrom_list(struct Client
*cptr
, struct SLink
**list
)
1632 struct SLink
* prv
= NULL
;
1634 for (tmp
= *list
; tmp
; tmp
= tmp
->next
) {
1635 if (tmp
->value
.cptr
== cptr
) {
1637 prv
->next
= tmp
->next
;
1647 /** Set \a cptr's server notice mask, according to \a what.
1648 * @param[in,out] cptr Client whose snomask is updating.
1649 * @param[in] newmask Base value for new snomask.
1650 * @param[in] what One of SNO_ADD, SNO_DEL, SNO_SET, to choose operation.
1652 void set_snomask(struct Client
*cptr
, unsigned int newmask
, int what
)
1654 unsigned int oldmask
, diffmask
; /* unsigned please */
1658 oldmask
= cli_snomask(cptr
);
1660 if (what
== SNO_ADD
)
1662 else if (what
== SNO_DEL
)
1663 newmask
= oldmask
& ~newmask
;
1664 else if (what
!= SNO_SET
) /* absolute set, no math needed */
1665 sendto_opmask_butone(0, SNO_OLDSNO
, "setsnomask called with %d ?!", what
);
1667 newmask
&= (IsAnOper(cptr
) ? SNO_ALL
: SNO_USER
);
1669 diffmask
= oldmask
^ newmask
;
1671 for (i
= 0; diffmask
>> i
; i
++) {
1672 if (((diffmask
>> i
) & 1))
1674 if (((newmask
>> i
) & 1))
1677 tmp
->next
= opsarray
[i
];
1678 tmp
->value
.cptr
= cptr
;
1682 /* not real portable :( */
1683 delfrom_list(cptr
, &opsarray
[i
]);
1686 cli_snomask(cptr
) = newmask
;
1689 /** Check whether \a sptr is allowed to send a message to \a acptr.
1690 * If \a sptr is a remote user, it means some server has an outdated
1691 * SILENCE list for \a acptr, so send the missing SILENCE mask(s) back
1692 * in the direction of \a sptr. Skip the check if \a sptr is a server.
1693 * @param[in] sptr Client trying to send a message.
1694 * @param[in] acptr Destination of message.
1695 * @return Non-zero if \a sptr is SILENCEd by \a acptr, zero if not.
1697 int is_silenced(struct Client
*sptr
, struct Client
*acptr
)
1701 size_t buf_used
, slen
;
1704 if (IsServer(sptr
) || !(user
= cli_user(acptr
))
1705 || !(found
= find_ban(sptr
, user
->silence
)))
1707 assert(!(found
->flags
& BAN_EXCEPTION
));
1708 if (!MyConnect(sptr
)) {
1709 /* Buffer positive silence to send back. */
1710 buf_used
= strlen(found
->banstr
);
1711 memcpy(buf
, found
->banstr
, buf_used
);
1712 /* Add exceptions to buffer. */
1713 for (found
= user
->silence
; found
; found
= found
->next
) {
1714 if (!(found
->flags
& BAN_EXCEPTION
))
1716 slen
= strlen(found
->banstr
);
1717 if (buf_used
+ slen
+ 4 > 400) {
1718 buf
[buf_used
] = '\0';
1719 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1723 buf
[buf_used
++] = ',';
1724 buf
[buf_used
++] = '+';
1725 buf
[buf_used
++] = '~';
1726 memcpy(buf
+ buf_used
, found
->banstr
, slen
);
1729 /* Flush silence buffer. */
1731 buf
[buf_used
] = '\0';
1732 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1739 /** Send RPL_ISUPPORT lines to \a cptr.
1740 * @param[in] cptr Client to send ISUPPORT to.
1744 send_supported(struct Client
*cptr
)
1746 char featurebuf
[512];
1748 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES1
, FEATURESVALUES1
);
1749 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1750 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES2
, FEATURESVALUES2
);
1751 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1753 return 0; /* convenience return, if it's ever needed */