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 2005/08/17 01:57:03 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 send_umode(cptr
, sptr
, &flags
, ALL_UMODES
);
694 if ((cli_snomask(sptr
) != SNO_DEFAULT
) && HasFlag(sptr
, FLAG_SERVNOTICE
))
695 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
700 /** List of user mode characters. */
701 static const struct UserMode
{
702 unsigned int flag
; /**< User mode constant. */
703 char c
; /**< Character corresponding to the mode. */
707 { FLAG_INVISIBLE
, 'i' },
708 { FLAG_WALLOP
, 'w' },
709 { FLAG_SERVNOTICE
, 's' },
711 { FLAG_CHSERV
, 'k' },
713 { FLAG_ACCOUNT
, 'r' },
714 { FLAG_HIDDENHOST
, 'x' }
717 /** Length of #userModeList. */
718 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
721 * XXX - find a way to get rid of this
723 /** Nasty global buffer used for communications with umode_str() and others. */
724 static char umodeBuf
[BUFSIZE
];
726 /** Try to set a user's nickname.
727 * If \a sptr is a server, the client is being introduced for the first time.
728 * @param[in] cptr Client to set nickname.
729 * @param[in] sptr Client sending the NICK.
730 * @param[in] nick New nickname.
731 * @param[in] parc Number of arguments to NICK.
732 * @param[in] parv Argument list to NICK.
733 * @return CPTR_KILLED if \a cptr was killed, else 0.
735 int set_nick_name(struct Client
* cptr
, struct Client
* sptr
,
736 const char* nick
, int parc
, char* parv
[])
738 if (IsServer(sptr
)) {
740 const char* account
= 0;
744 * A server introducing a new client, change source
746 struct Client
* new_client
= make_client(cptr
, STAT_UNKNOWN
);
747 assert(0 != new_client
);
749 cli_hopcount(new_client
) = atoi(parv
[2]);
750 cli_lastnick(new_client
) = atoi(parv
[3]);
751 if (Protocol(cptr
) > 9 && parc
> 7 && *parv
[6] == '+')
753 for (p
= parv
[6] + 1; *p
; p
++)
755 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
757 if (userModeList
[i
].c
== *p
)
759 SetFlag(new_client
, userModeList
[i
].flag
);
760 if (userModeList
[i
].flag
== FLAG_ACCOUNT
)
767 client_set_privs(new_client
, NULL
); /* set privs on user */
771 strcpy(cli_name(new_client
), nick
);
772 cli_user(new_client
) = make_user(new_client
);
773 cli_user(new_client
)->server
= sptr
;
774 SetRemoteNumNick(new_client
, parv
[parc
- 2]);
776 * IP# of remote client
778 base64toip(parv
[parc
- 3], &cli_ip(new_client
));
780 add_client_to_list(new_client
);
781 hAddClient(new_client
);
783 cli_serv(sptr
)->ghost
= 0; /* :server NICK means end of net.burst */
784 ircd_strncpy(cli_username(new_client
), parv
[4], USERLEN
);
785 ircd_strncpy(cli_user(new_client
)->host
, parv
[5], HOSTLEN
);
786 ircd_strncpy(cli_user(new_client
)->realhost
, parv
[5], HOSTLEN
);
787 ircd_strncpy(cli_info(new_client
), parv
[parc
- 1], REALLEN
);
789 int len
= ACCOUNTLEN
;
790 if ((p
= strchr(account
, ':'))) {
791 len
= (p
++) - account
;
792 cli_user(new_client
)->acc_create
= atoi(p
);
793 Debug((DEBUG_DEBUG
, "Received timestamped account in user mode; "
794 "account \"%s\", timestamp %Tu", account
,
795 cli_user(new_client
)->acc_create
));
797 ircd_strncpy(cli_user(new_client
)->account
, account
, len
);
799 if (HasHiddenHost(new_client
))
800 ircd_snprintf(0, cli_user(new_client
)->host
, HOSTLEN
, "%s.%s",
801 account
, feature_str(FEAT_HIDDEN_HOST
));
803 return register_user(cptr
, new_client
, cli_name(new_client
), parv
[4]);
805 else if ((cli_name(sptr
))[0]) {
807 * Client changing its nick
809 * If the client belongs to me, then check to see
810 * if client is on any channels where it is currently
811 * banned. If so, do not allow the nick change to occur.
814 const char* channel_name
;
815 struct Membership
*member
;
816 if ((channel_name
= find_no_nickchange_channel(sptr
))) {
817 return send_reply(cptr
, ERR_BANNICKCHANGE
, channel_name
);
820 * Refuse nick change if the last nick change was less
821 * then 30 seconds ago. This is intended to get rid of
822 * clone bots doing NICK FLOOD. -SeKs
823 * If someone didn't change their nick for more then 60 seconds
824 * however, allow to do two nick changes immediately after another
825 * before limiting the nick flood. -Run
827 if (CurrentTime
< cli_nextnick(cptr
))
829 cli_nextnick(cptr
) += 2;
830 send_reply(cptr
, ERR_NICKTOOFAST
, parv
[1],
831 cli_nextnick(cptr
) - CurrentTime
);
832 /* Send error message */
833 sendcmdto_one(cptr
, CMD_NICK
, cptr
, "%s", cli_name(cptr
));
834 /* bounce NICK to user */
835 return 0; /* ignore nick change! */
838 /* Limit total to 1 change per NICK_DELAY seconds: */
839 cli_nextnick(cptr
) += NICK_DELAY
;
840 /* However allow _maximal_ 1 extra consecutive nick change: */
841 if (cli_nextnick(cptr
) < CurrentTime
)
842 cli_nextnick(cptr
) = CurrentTime
;
844 /* Invalidate all bans against the user so we check them again */
845 for (member
= (cli_user(cptr
))->channel
; member
;
846 member
= member
->next_channel
)
847 ClearBanValid(member
);
850 * Also set 'lastnick' to current time, if changed.
852 if (0 != ircd_strcmp(parv
[0], nick
))
853 cli_lastnick(sptr
) = (sptr
== cptr
) ? TStime() : atoi(parv
[2]);
856 * Client just changing his/her nick. If he/she is
857 * on a channel, send note of change to all clients
858 * on that channel. Propagate notice to other servers.
861 sendcmdto_common_channels_butone(sptr
, CMD_NICK
, NULL
, ":%s", nick
);
862 add_history(sptr
, 1);
863 sendcmdto_serv_butone(sptr
, CMD_NICK
, cptr
, "%s %Tu", nick
,
867 sendcmdto_one(sptr
, CMD_NICK
, sptr
, ":%s", nick
);
869 if ((cli_name(sptr
))[0])
871 strcpy(cli_name(sptr
), nick
);
875 /* Local client setting NICK the first time */
877 strcpy(cli_name(sptr
), nick
);
878 if (!cli_user(sptr
)) {
879 cli_user(sptr
) = make_user(sptr
);
880 cli_user(sptr
)->server
= &me
;
884 cli_unreg(sptr
) &= ~CLIREG_NICK
; /* nickname now set */
887 * If the client hasn't gotten a cookie-ping yet,
888 * choose a cookie and send it. -record!jegelhof@cloud9.net
890 if (!cli_cookie(sptr
)) {
892 cli_cookie(sptr
) = (ircrandom() & 0x7fffffff);
893 } while (!cli_cookie(sptr
));
894 sendrawto_one(cptr
, MSG_PING
" :%u", cli_cookie(sptr
));
896 else if (!cli_unreg(sptr
)) {
898 * USER and PONG already received, now we have NICK.
899 * register_user may reject the client and call exit_client
900 * for it - must test this and exit m_nick too !
902 cli_lastnick(sptr
) = TStime(); /* Always local client */
903 if (register_user(cptr
, sptr
, nick
, cli_user(sptr
)->username
) == CPTR_KILLED
)
910 /** Calculate the hash value for a target.
911 * @param[in] target Pointer to target, cast to unsigned int.
912 * @return Hash value constructed from the pointer.
914 static unsigned char hash_target(unsigned int target
)
916 return (unsigned char) (target
>> 16) ^ (target
>> 8);
919 /** Records \a target as a recent target for \a sptr.
920 * @param[in] sptr User who has sent to a new target.
921 * @param[in] target Target to add.
924 add_target(struct Client
*sptr
, void *target
)
926 /* Ok, this shouldn't work esp on alpha
928 unsigned char hash
= hash_target((unsigned long) target
);
929 unsigned char* targets
;
932 assert(cli_local(sptr
));
934 targets
= cli_targets(sptr
);
939 for (i
= 0; i
< MAXTARGETS
; ++i
) {
940 if (targets
[i
] == hash
)
946 memmove(&targets
[RESERVEDTARGETS
+ 1],
947 &targets
[RESERVEDTARGETS
], MAXTARGETS
- RESERVEDTARGETS
- 1);
948 targets
[RESERVEDTARGETS
] = hash
;
951 /** Check whether \a sptr can send to or join \a target yet.
952 * @param[in] sptr User trying to join a channel or send a message.
953 * @param[in] target Target of the join or message.
954 * @param[in] name Name of the target.
955 * @param[in] created If non-zero, trying to join a new channel.
956 * @return Non-zero if too many target changes; zero if okay to send.
958 int check_target_limit(struct Client
*sptr
, void *target
, const char *name
,
961 unsigned char hash
= hash_target((unsigned long) target
);
963 unsigned char* targets
;
966 assert(cli_local(sptr
));
967 targets
= cli_targets(sptr
);
969 /* If user is invited to channel, give him/her a free target */
970 if (IsChannelName(name
) && IsInvited(sptr
, target
))
974 * Same target as last time?
976 if (targets
[0] == hash
)
978 for (i
= 1; i
< MAXTARGETS
; ++i
) {
979 if (targets
[i
] == hash
) {
980 memmove(&targets
[1], &targets
[0], i
);
989 if (CurrentTime
< cli_nexttarget(sptr
)) {
990 if (cli_nexttarget(sptr
) - CurrentTime
< TARGET_DELAY
+ 8) {
994 cli_nexttarget(sptr
) += 2;
995 send_reply(sptr
, ERR_TARGETTOOFAST
, name
,
996 cli_nexttarget(sptr
) - CurrentTime
);
1001 cli_nexttarget(sptr
) += TARGET_DELAY
;
1002 if (cli_nexttarget(sptr
) < CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1)))
1003 cli_nexttarget(sptr
) = CurrentTime
- (TARGET_DELAY
* (MAXTARGETS
- 1));
1006 memmove(&targets
[1], &targets
[0], MAXTARGETS
- 1);
1011 /** Allows a channel operator to avoid target change checks when
1012 * sending messages to users on their channel.
1013 * @param[in] source User sending the message.
1014 * @param[in] nick Destination of the message.
1015 * @param[in] channel Name of channel being sent to.
1016 * @param[in] text Message to send.
1017 * @param[in] is_notice If non-zero, use CNOTICE instead of CPRIVMSG.
1019 /* Added 971023 by Run. */
1020 int whisper(struct Client
* source
, const char* nick
, const char* channel
,
1021 const char* text
, int is_notice
)
1023 struct Client
* dest
;
1024 struct Channel
* chptr
;
1025 struct Membership
* membership
;
1027 assert(0 != source
);
1029 assert(0 != channel
);
1030 assert(MyUser(source
));
1032 if (!(dest
= FindUser(nick
))) {
1033 return send_reply(source
, ERR_NOSUCHNICK
, nick
);
1035 if (!(chptr
= FindChannel(channel
))) {
1036 return send_reply(source
, ERR_NOSUCHCHANNEL
, channel
);
1039 * compare both users channel lists, instead of the channels user list
1040 * since the link is the same, this should be a little faster for channels
1041 * with a lot of users
1043 for (membership
= cli_user(source
)->channel
; membership
; membership
= membership
->next_channel
) {
1044 if (chptr
== membership
->channel
)
1047 if (0 == membership
) {
1048 return send_reply(source
, ERR_NOTONCHANNEL
, chptr
->chname
);
1050 if (!IsVoicedOrOpped(membership
)) {
1051 return send_reply(source
, ERR_VOICENEEDED
, chptr
->chname
);
1054 * lookup channel in destination
1056 assert(0 != cli_user(dest
));
1057 for (membership
= cli_user(dest
)->channel
; membership
; membership
= membership
->next_channel
) {
1058 if (chptr
== membership
->channel
)
1061 if (0 == membership
|| IsZombie(membership
)) {
1062 return send_reply(source
, ERR_USERNOTINCHANNEL
, cli_name(dest
), chptr
->chname
);
1064 if (is_silenced(source
, dest
))
1067 if (cli_user(dest
)->away
)
1068 send_reply(source
, RPL_AWAY
, cli_name(dest
), cli_user(dest
)->away
);
1070 sendcmdto_one(source
, CMD_NOTICE
, dest
, "%C :%s", dest
, text
);
1072 sendcmdto_one(source
, CMD_PRIVATE
, dest
, "%C :%s", dest
, text
);
1077 /** Send a user mode change for \a cptr to neighboring servers.
1078 * @param[in] cptr User whose mode is changing.
1079 * @param[in] sptr Client who sent us the mode change message.
1080 * @param[in] old Prior set of user flags.
1081 * @param[in] prop If non-zero, also include FLAG_OPER.
1083 void send_umode_out(struct Client
*cptr
, struct Client
*sptr
,
1084 struct Flags
*old
, int prop
)
1087 struct Client
*acptr
;
1089 send_umode(NULL
, sptr
, old
, prop
? SEND_UMODES
: SEND_UMODES_BUT_OPER
);
1091 for (i
= HighestFd
; i
>= 0; i
--)
1093 if ((acptr
= LocalClientArray
[i
]) && IsServer(acptr
) &&
1094 (acptr
!= cptr
) && (acptr
!= sptr
) && *umodeBuf
)
1095 sendcmdto_one(sptr
, CMD_MODE
, acptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
1097 if (cptr
&& MyUser(cptr
))
1098 send_umode(cptr
, sptr
, old
, ALL_UMODES
);
1102 /** Call \a fmt for each Client named in \a names.
1103 * @param[in] sptr Client requesting information.
1104 * @param[in] names Space-delimited list of nicknames.
1105 * @param[in] rpl Base reply string for messages.
1106 * @param[in] fmt Formatting callback function.
1108 void send_user_info(struct Client
* sptr
, char* names
, int rpl
, InfoFormatter fmt
)
1113 int users_found
= 0;
1114 struct Client
* acptr
;
1121 mb
= msgq_make(sptr
, rpl_str(rpl
), cli_name(&me
), cli_name(sptr
));
1123 for (name
= ircd_strtok(&p
, names
, " "); name
; name
= ircd_strtok(&p
, 0, " ")) {
1124 if ((acptr
= FindUser(name
))) {
1126 msgq_append(0, mb
, " ");
1127 (*fmt
)(acptr
, sptr
, mb
);
1129 if (5 == ++arg_count
)
1132 send_buffer(sptr
, mb
, 0);
1136 /** Set \a flag on \a cptr and possibly hide the client's hostmask.
1137 * @param[in,out] cptr User who is getting a new flag.
1138 * @param[in] flag Some flag that affects host-hiding (FLAG_HIDDENHOST, FLAG_ACCOUNT).
1142 hide_hostmask(struct Client
*cptr
, unsigned int flag
)
1144 struct Membership
*chan
;
1147 case FLAG_HIDDENHOST
:
1148 /* Local users cannot set +x unless FEAT_HOST_HIDING is true. */
1149 if (MyConnect(cptr
) && !feature_bool(FEAT_HOST_HIDING
))
1153 /* Invalidate all bans against the user so we check them again */
1154 for (chan
= (cli_user(cptr
))->channel
; chan
;
1155 chan
= chan
->next_channel
)
1156 ClearBanValid(chan
);
1162 SetFlag(cptr
, flag
);
1163 if (!HasFlag(cptr
, FLAG_HIDDENHOST
) || !HasFlag(cptr
, FLAG_ACCOUNT
))
1166 sendcmdto_common_channels_butone(cptr
, CMD_QUIT
, cptr
, ":Registered");
1167 ircd_snprintf(0, cli_user(cptr
)->host
, HOSTLEN
, "%s.%s",
1168 cli_user(cptr
)->account
, feature_str(FEAT_HIDDEN_HOST
));
1170 /* ok, the client is now fully hidden, so let them know -- hikari */
1171 if (MyConnect(cptr
))
1172 send_reply(cptr
, RPL_HOSTHIDDEN
, cli_user(cptr
)->host
);
1175 * Go through all channels the client was on, rejoin him
1176 * and set the modes, if any
1178 for (chan
= cli_user(cptr
)->channel
; chan
; chan
= chan
->next_channel
)
1182 /* Send a JOIN unless the user's join has been delayed. */
1183 if (!IsDelayedJoin(chan
))
1184 sendcmdto_channel_butserv_butone(cptr
, CMD_JOIN
, chan
->channel
, cptr
, 0,
1185 "%H", chan
->channel
);
1186 if (IsChanOp(chan
) && HasVoice(chan
))
1187 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
1188 "%H +ov %C %C", chan
->channel
, cptr
,
1190 else if (IsChanOp(chan
) || HasVoice(chan
))
1191 sendcmdto_channel_butserv_butone(&his
, CMD_MODE
, chan
->channel
, cptr
, 0,
1192 "%H +%c %C", chan
->channel
, IsChanOp(chan
) ? 'o' : 'v', cptr
);
1197 /** Set a user's mode. This function checks that \a cptr is trying to
1198 * set his own mode, prevents local users from setting inappropriate
1199 * modes through this function, and applies any other side effects of
1200 * a successful mode change.
1202 * @param[in,out] cptr User setting someone's mode.
1203 * @param[in] sptr Client who sent the mode change message.
1204 * @param[in] parc Number of parameters in \a parv.
1205 * @param[in] parv Parameters to MODE.
1208 int set_user_mode(struct Client
*cptr
, struct Client
*sptr
, int parc
, char *parv
[])
1212 struct Client
*acptr
;
1215 struct Flags setflags
;
1216 unsigned int tmpmask
= 0;
1217 int snomask_given
= 0;
1220 int do_host_hiding
= 0;
1225 return need_more_params(sptr
, "MODE");
1227 if (!(acptr
= FindUser(parv
[1])))
1229 if (MyConnect(sptr
))
1230 send_reply(sptr
, ERR_NOSUCHCHANNEL
, parv
[1]);
1234 if (IsServer(sptr
) || sptr
!= acptr
)
1237 sendwallto_group_butone(&me
, WALL_WALLOPS
, 0,
1238 "MODE for User %s from %s!%s", parv
[1],
1239 cli_name(cptr
), cli_name(sptr
));
1241 send_reply(sptr
, ERR_USERSDONTMATCH
);
1249 for (i
= 0; i
< USERMODELIST_SIZE
; i
++)
1251 if (HasFlag(sptr
, userModeList
[i
].flag
) &&
1252 userModeList
[i
].flag
!= FLAG_ACCOUNT
)
1253 *m
++ = userModeList
[i
].c
;
1256 send_reply(sptr
, RPL_UMODEIS
, buf
);
1257 if (HasFlag(sptr
, FLAG_SERVNOTICE
) && MyConnect(sptr
)
1258 && cli_snomask(sptr
) !=
1259 (unsigned int)(IsOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
))
1260 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1265 * find flags already set for user
1266 * why not just copy them?
1268 setflags
= cli_flags(sptr
);
1270 if (MyConnect(sptr
))
1271 tmpmask
= cli_snomask(sptr
);
1274 * parse mode change string(s)
1276 for (p
= &parv
[2]; *p
; p
++) { /* p is changed in loop too */
1277 for (m
= *p
; *m
; m
++) {
1286 if (*(p
+ 1) && is_snomask(*(p
+ 1))) {
1288 tmpmask
= umode_make_snomask(tmpmask
, *++p
, what
);
1289 tmpmask
&= (IsAnOper(sptr
) ? SNO_ALL
: SNO_USER
);
1292 tmpmask
= (what
== MODE_ADD
) ?
1293 (IsAnOper(sptr
) ? SNO_OPERDEFAULT
: SNO_DEFAULT
) : 0;
1295 SetServNotice(sptr
);
1297 ClearServNotice(sptr
);
1300 if (what
== MODE_ADD
)
1306 if (what
== MODE_ADD
)
1309 ClrFlag(sptr
, FLAG_OPER
);
1310 ClrFlag(sptr
, FLAG_LOCOP
);
1311 if (MyConnect(sptr
))
1313 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1314 cli_handler(sptr
) = CLIENT_HANDLER
;
1319 if (what
== MODE_ADD
)
1323 ClrFlag(sptr
, FLAG_OPER
);
1324 ClrFlag(sptr
, FLAG_LOCOP
);
1325 if (MyConnect(sptr
))
1327 tmpmask
= cli_snomask(sptr
) & ~SNO_OPER
;
1328 cli_handler(sptr
) = CLIENT_HANDLER
;
1333 if (what
== MODE_ADD
)
1336 ClearInvisible(sptr
);
1339 if (what
== MODE_ADD
)
1345 if (what
== MODE_ADD
)
1346 SetChannelService(sptr
);
1348 ClearChannelService(sptr
);
1351 if (what
== MODE_ADD
)
1357 if (what
== MODE_ADD
)
1361 send_reply(sptr
, ERR_UMODEUNKNOWNFLAG
, *m
);
1367 * Evaluate rules for new user mode
1368 * Stop users making themselves operators too easily:
1370 if (!IsServer(cptr
))
1372 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1374 if (!FlagHas(&setflags
, FLAG_LOCOP
) && IsLocOp(sptr
))
1377 * new umode; servers can set it, local users cannot;
1378 * prevents users from /kick'ing or /mode -o'ing
1380 if (!FlagHas(&setflags
, FLAG_CHSERV
))
1381 ClearChannelService(sptr
);
1383 * only send wallops to opers
1385 if (feature_bool(FEAT_WALLOPS_OPER_ONLY
) && !IsAnOper(sptr
) &&
1386 !FlagHas(&setflags
, FLAG_WALLOP
))
1388 if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY
) && MyConnect(sptr
) &&
1389 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_SERVNOTICE
))
1391 ClearServNotice(sptr
);
1392 set_snomask(sptr
, 0, SNO_SET
);
1394 if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY
) &&
1395 !IsAnOper(sptr
) && !FlagHas(&setflags
, FLAG_DEBUG
))
1398 if (MyConnect(sptr
))
1400 if ((FlagHas(&setflags
, FLAG_OPER
) || FlagHas(&setflags
, FLAG_LOCOP
)) &&
1402 det_confs_butmask(sptr
, CONF_CLIENT
& ~CONF_OPERATOR
);
1404 if (SendServNotice(sptr
))
1406 if (tmpmask
!= cli_snomask(sptr
))
1407 set_snomask(sptr
, tmpmask
, SNO_SET
);
1408 if (cli_snomask(sptr
) && snomask_given
)
1409 send_reply(sptr
, RPL_SNOMASK
, cli_snomask(sptr
), cli_snomask(sptr
));
1412 set_snomask(sptr
, 0, SNO_SET
);
1415 * Compare new flags with old flags and send string which
1416 * will cause servers to update correctly.
1418 if (!FlagHas(&setflags
, FLAG_OPER
) && IsOper(sptr
))
1422 client_set_privs(sptr
, NULL
); /* may set propagate privilege */
1424 /* remember propagate privilege setting */
1425 if (HasPriv(sptr
, PRIV_PROPAGATE
))
1427 if (FlagHas(&setflags
, FLAG_OPER
) && !IsOper(sptr
))
1429 /* user no longer oper */
1431 client_set_privs(sptr
, NULL
); /* will clear propagate privilege */
1433 if (FlagHas(&setflags
, FLAG_INVISIBLE
) && !IsInvisible(sptr
))
1434 --UserStats
.inv_clients
;
1435 if (!FlagHas(&setflags
, FLAG_INVISIBLE
) && IsInvisible(sptr
))
1436 ++UserStats
.inv_clients
;
1437 if (!FlagHas(&setflags
, FLAG_HIDDENHOST
) && do_host_hiding
)
1438 hide_hostmask(sptr
, FLAG_HIDDENHOST
);
1439 send_umode_out(cptr
, sptr
, &setflags
, prop
);
1444 /** Build a mode string to describe modes for \a cptr.
1445 * @param[in] cptr Some user.
1446 * @return Pointer to a static buffer.
1448 char *umode_str(struct Client
*cptr
)
1450 /* Maximum string size: "owidgrx\0" */
1453 struct Flags c_flags
= cli_flags(cptr
);
1455 if (!HasPriv(cptr
, PRIV_PROPAGATE
))
1456 FlagClr(&c_flags
, FLAG_OPER
);
1458 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1460 if (FlagHas(&c_flags
, userModeList
[i
].flag
) &&
1461 userModeList
[i
].flag
>= FLAG_GLOBAL_UMODES
)
1462 *m
++ = userModeList
[i
].c
;
1465 if (IsAccount(cptr
))
1467 char* t
= cli_user(cptr
)->account
;
1470 while ((*m
++ = *t
++))
1473 if (cli_user(cptr
)->acc_create
) {
1475 Debug((DEBUG_DEBUG
, "Sending timestamped account in user mode for "
1476 "account \"%s\"; timestamp %Tu", cli_user(cptr
)->account
,
1477 cli_user(cptr
)->acc_create
));
1478 ircd_snprintf(0, t
= nbuf
, sizeof(nbuf
), ":%Tu",
1479 cli_user(cptr
)->acc_create
);
1480 m
--; /* back up over previous nul-termination */
1481 while ((*m
++ = *t
++))
1488 return umodeBuf
; /* Note: static buffer, gets
1489 overwritten by send_umode() */
1492 /** Send a mode change string for \a sptr to \a cptr.
1493 * @param[in] cptr Destination of mode change message.
1494 * @param[in] sptr User whose mode has changed.
1495 * @param[in] old Pre-change set of modes for \a sptr.
1496 * @param[in] sendset One of ALL_UMODES, SEND_UMODES_BUT_OPER,
1497 * SEND_UMODES, to select which changed user modes to send.
1499 void send_umode(struct Client
*cptr
, struct Client
*sptr
, struct Flags
*old
,
1505 int what
= MODE_NULL
;
1508 * Build a string in umodeBuf to represent the change in the user's
1509 * mode between the new (cli_flags(sptr)) and 'old', but skipping
1510 * the modes indicated by sendset.
1514 for (i
= 0; i
< USERMODELIST_SIZE
; ++i
)
1516 flag
= userModeList
[i
].flag
;
1517 if (FlagHas(old
, flag
)
1518 == HasFlag(sptr
, flag
))
1524 case SEND_UMODES_BUT_OPER
:
1525 if (flag
== FLAG_OPER
)
1527 /* and fall through */
1529 if (flag
< FLAG_GLOBAL_UMODES
)
1533 if (FlagHas(old
, flag
))
1535 if (what
== MODE_DEL
)
1536 *m
++ = userModeList
[i
].c
;
1541 *m
++ = userModeList
[i
].c
;
1544 else /* !FlagHas(old, flag) */
1546 if (what
== MODE_ADD
)
1547 *m
++ = userModeList
[i
].c
;
1552 *m
++ = userModeList
[i
].c
;
1557 if (*umodeBuf
&& cptr
)
1558 sendcmdto_one(sptr
, CMD_MODE
, cptr
, "%s :%s", cli_name(sptr
), umodeBuf
);
1562 * Check to see if this resembles a sno_mask. It is if 1) there is
1563 * at least one digit and 2) The first digit occurs before the first
1564 * alphabetic character.
1565 * @param[in] word Word to check for sno_mask-ness.
1566 * @return Non-zero if \a word looks like a server notice mask; zero if not.
1568 int is_snomask(char *word
)
1572 for (; *word
; word
++)
1575 else if (IsAlpha(*word
))
1581 /** Update snomask \a oldmask according to \a arg and \a what.
1582 * @param[in] oldmask Original user mask.
1583 * @param[in] arg Update string (either a number or '+'/'-' followed by a number).
1584 * @param[in] what MODE_ADD if adding the mask.
1585 * @return New value of service notice mask.
1587 unsigned int umode_make_snomask(unsigned int oldmask
, char *arg
, int what
)
1589 unsigned int sno_what
;
1590 unsigned int newmask
;
1594 if (what
== MODE_ADD
)
1599 else if (*arg
== '-')
1602 if (what
== MODE_ADD
)
1608 sno_what
= (what
== MODE_ADD
) ? SNO_SET
: SNO_DEL
;
1609 /* pity we don't have strtoul everywhere */
1610 newmask
= (unsigned int)atoi(arg
);
1611 if (sno_what
== SNO_DEL
)
1612 newmask
= oldmask
& ~newmask
;
1613 else if (sno_what
== SNO_ADD
)
1618 /** Remove \a cptr from the singly linked list \a list.
1619 * @param[in] cptr Client to remove from list.
1620 * @param[in,out] list Pointer to head of list containing \a cptr.
1622 static void delfrom_list(struct Client
*cptr
, struct SLink
**list
)
1625 struct SLink
* prv
= NULL
;
1627 for (tmp
= *list
; tmp
; tmp
= tmp
->next
) {
1628 if (tmp
->value
.cptr
== cptr
) {
1630 prv
->next
= tmp
->next
;
1640 /** Set \a cptr's server notice mask, according to \a what.
1641 * @param[in,out] cptr Client whose snomask is updating.
1642 * @param[in] newmask Base value for new snomask.
1643 * @param[in] what One of SNO_ADD, SNO_DEL, SNO_SET, to choose operation.
1645 void set_snomask(struct Client
*cptr
, unsigned int newmask
, int what
)
1647 unsigned int oldmask
, diffmask
; /* unsigned please */
1651 oldmask
= cli_snomask(cptr
);
1653 if (what
== SNO_ADD
)
1655 else if (what
== SNO_DEL
)
1656 newmask
= oldmask
& ~newmask
;
1657 else if (what
!= SNO_SET
) /* absolute set, no math needed */
1658 sendto_opmask_butone(0, SNO_OLDSNO
, "setsnomask called with %d ?!", what
);
1660 newmask
&= (IsAnOper(cptr
) ? SNO_ALL
: SNO_USER
);
1662 diffmask
= oldmask
^ newmask
;
1664 for (i
= 0; diffmask
>> i
; i
++) {
1665 if (((diffmask
>> i
) & 1))
1667 if (((newmask
>> i
) & 1))
1670 tmp
->next
= opsarray
[i
];
1671 tmp
->value
.cptr
= cptr
;
1675 /* not real portable :( */
1676 delfrom_list(cptr
, &opsarray
[i
]);
1679 cli_snomask(cptr
) = newmask
;
1682 /** Check whether \a sptr is allowed to send a message to \a acptr.
1683 * If \a sptr is a remote user, it means some server has an outdated
1684 * SILENCE list for \a acptr, so send the missing SILENCE mask(s) back
1685 * in the direction of \a sptr. Skip the check if \a sptr is a server.
1686 * @param[in] sptr Client trying to send a message.
1687 * @param[in] acptr Destination of message.
1688 * @return Non-zero if \a sptr is SILENCEd by \a acptr, zero if not.
1690 int is_silenced(struct Client
*sptr
, struct Client
*acptr
)
1694 size_t buf_used
, slen
;
1697 if (IsServer(sptr
) || !(user
= cli_user(acptr
))
1698 || !(found
= find_ban(sptr
, user
->silence
)))
1700 assert(!(found
->flags
& BAN_EXCEPTION
));
1701 if (!MyConnect(sptr
)) {
1702 /* Buffer positive silence to send back. */
1703 buf_used
= strlen(found
->banstr
);
1704 memcpy(buf
, found
->banstr
, buf_used
);
1705 /* Add exceptions to buffer. */
1706 for (found
= user
->silence
; found
; found
= found
->next
) {
1707 if (!(found
->flags
& BAN_EXCEPTION
))
1709 slen
= strlen(found
->banstr
);
1710 if (buf_used
+ slen
+ 4 > 400) {
1711 buf
[buf_used
] = '\0';
1712 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1716 buf
[buf_used
++] = ',';
1717 buf
[buf_used
++] = '+';
1718 buf
[buf_used
++] = '~';
1719 memcpy(buf
+ buf_used
, found
->banstr
, slen
);
1722 /* Flush silence buffer. */
1724 buf
[buf_used
] = '\0';
1725 sendcmdto_one(acptr
, CMD_SILENCE
, cli_from(sptr
), "%C %s", sptr
, buf
);
1732 /** Send RPL_ISUPPORT lines to \a cptr.
1733 * @param[in] cptr Client to send ISUPPORT to.
1737 send_supported(struct Client
*cptr
)
1739 char featurebuf
[512];
1741 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES1
, FEATURESVALUES1
);
1742 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1743 ircd_snprintf(0, featurebuf
, sizeof(featurebuf
), FEATURES2
, FEATURESVALUES2
);
1744 send_reply(cptr
, RPL_ISUPPORT
, featurebuf
);
1746 return 0; /* convenience return, if it's ever needed */