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 1864 2008-03-15 05:33:22Z entrope $
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) {
114 MyFree(user->lastmsg);
118 assert(0 == user->joined);
119 assert(0 == user->invited);
120 assert(0 == user->channel);
128 /** Find number of User structs allocated and memory used by them.
129 * @param[out] count_out Receives number of User structs allocated.
130 * @param[out] bytes_out Receives number of bytes used by User structs.
132 void user_count_memory(size_t* count_out, size_t* bytes_out)
134 assert(0 != count_out);
135 assert(0 != bytes_out);
136 *count_out = userCount;
137 *bytes_out = userCount * sizeof(struct User);
141 /** Find the next client (starting at \a next) with a name that matches \a ch.
142 * Normal usage loop is:
143 * for (x = client; x = next_client(x,mask); x = x->next)
144 * HandleMatchingClient;
146 * @param[in] next First client to check.
147 * @param[in] ch Name mask to check against.
148 * @return Next matching client found, or NULL if none.
150 struct Client *next_client(struct Client *next, const char* ch)
152 struct Client *tmp = next;
157 next = FindClient(ch);
158 next = next ? next : tmp;
159 if (cli_prev(tmp) == next)
163 for (; next; next = cli_next(next))
164 if (!match(ch, cli_name(next)))
169 /** Find the destination server for a command, and forward it if that is not us.
171 * \a server may be a nickname, server name, server mask (if \a from
172 * is a local user) or server numnick (if \a is a server or remote
175 * @param[in] from Client that sent the command to us.
176 * @param[in] cmd Long-form command text.
177 * @param[in] tok Token-form command text.
178 * @param[in] one Client that originated the command (ignored).
179 * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH.
180 * @param[in] pattern Format string of arguments to command.
181 * @param[in] server Index of target name or mask in \a parv.
182 * @param[in] parc Number of valid elements in \a parv (must be less than 9).
183 * @param[in] parv Array of arguments to command.
184 * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS.
186 int hunt_server_cmd(struct Client *from, const char *cmd, const char *tok,
187 struct Client *one, int MustBeOper, const char *pattern,
188 int server, int parc, char *parv[])
190 struct Client *acptr;
193 /* Assume it's me, if no server or an unregistered client */
194 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
195 return (HUNTED_ISME);
197 if (MustBeOper && !IsPrivileged(from))
199 send_reply(from, ERR_NOPRIVILEGES);
200 return HUNTED_NOSUCH;
203 /* Make sure it's a server */
205 /* Make sure it's a server */
206 if (!strchr(to, '*')) {
207 if (0 == (acptr = FindClient(to))) {
208 send_reply(from, ERR_NOSUCHSERVER, to);
209 return HUNTED_NOSUCH;
213 acptr = cli_user(acptr)->server;
214 } else if (!(acptr = find_match_server(to))) {
215 send_reply(from, ERR_NOSUCHSERVER, to);
216 return (HUNTED_NOSUCH);
218 } else if (!(acptr = FindNServer(to))) {
219 send_reply(from, SND_EXPLICIT | ERR_NOSUCHSERVER, "* :Server has disconnected");
220 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
224 return (HUNTED_ISME);
226 if (MustBeOper && !IsPrivileged(from)) {
227 send_reply(from, ERR_NOPRIVILEGES);
228 return HUNTED_NOSUCH;
231 /* assert(!IsServer(from)); */
233 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
235 sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
236 parv[4], parv[5], parv[6], parv[7], parv[8]);
238 return (HUNTED_PASS);
241 /** Find the destination server for a command, and forward it (as a
242 * high-priority command) if that is not us.
244 * \a server may be a nickname, server name, server mask (if \a from
245 * is a local user) or server numnick (if \a is a server or remote
247 * Unlike hunt_server_cmd(), this appends the message to the
248 * high-priority message queue for the destination server.
250 * @param[in] from Client that sent the command to us.
251 * @param[in] cmd Long-form command text.
252 * @param[in] tok Token-form command text.
253 * @param[in] one Client that originated the command (ignored).
254 * @param[in] MustBeOper If non-zero and \a from is not an operator, return HUNTED_NOSUCH.
255 * @param[in] pattern Format string of arguments to command.
256 * @param[in] server Index of target name or mask in \a parv.
257 * @param[in] parc Number of valid elements in \a parv (must be less than 9).
258 * @param[in] parv Array of arguments to command.
259 * @return One of HUNTED_ISME, HUNTED_NOSUCH or HUNTED_PASS.
261 int hunt_server_prio_cmd(struct Client *from, const char *cmd, const char *tok,
262 struct Client *one, int MustBeOper,
263 const char *pattern, int server, int parc,
266 struct Client *acptr;
269 /* Assume it's me, if no server or an unregistered client */
270 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
271 return (HUNTED_ISME);
273 /* Make sure it's a server */
275 /* Make sure it's a server */
276 if (!strchr(to, '*')) {
277 if (0 == (acptr = FindClient(to))) {
278 send_reply(from, ERR_NOSUCHSERVER, to);
279 return HUNTED_NOSUCH;
283 acptr = cli_user(acptr)->server;
284 } else if (!(acptr = find_match_server(to))) {
285 send_reply(from, ERR_NOSUCHSERVER, to);
286 return (HUNTED_NOSUCH);
288 } else if (!(acptr = FindNServer(to)))
289 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
292 return (HUNTED_ISME);
294 if (MustBeOper && !IsPrivileged(from)) {
295 send_reply(from, ERR_NOPRIVILEGES);
296 return HUNTED_NOSUCH;
299 /* assert(!IsServer(from)); SETTIME to particular destinations permitted */
301 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
303 sendcmdto_prio_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
304 parv[4], parv[5], parv[6], parv[7], parv[8]);
306 return (HUNTED_PASS);
309 /* Helper function for register_user that splits up the parameters of the
310 * default user modes and sets them on the user.
312 static void set_initial_user_modes(struct Client *cptr) {
314 int i, num, l, offset;
315 char *tmpstr = (char*)client_get_default_umode(cptr);
319 tmpstr = strdup(tmpstr);
321 /* \tmpstr may have multiple parameters and \set_user_mode needs them
322 * to be split up. We just copy the default string and then replace the
323 * spaces with \0 to split the strings up.
326 for(i = 0; tmpstr[i]; ++i) {
327 if(tmpstr[i] == ' ') {
333 umodev = MyMalloc((6 + num) * sizeof(char*));
334 memset(umodev, 0, (6 + num) * sizeof(char*));
339 for(i = 0; i < num; ++i) {
340 for(l = 0; back[l]; ++l) /* do nothing */;
341 /* Ignore empty parameters. */
342 if(l > 0) umodev[2 + i + offset] = back;
348 set_user_mode(&me, cptr, 2 + num + offset, umodev, ALLOWMODES_WITHSECSERV);
356 * This function is called when both NICK and USER messages
357 * have been accepted for the client, in whatever order. Only
358 * after this the USER message is propagated.
360 * NICK's must be propagated at once when received, although
361 * it would be better to delay them too until full info is
362 * available. Doing it is not so simple though, would have
363 * to implement the following:
365 * 1) user telnets in and gives only "NICK foobar" and waits
366 * 2) another user far away logs in normally with the nick
367 * "foobar" (quite legal, as this server didn't propagate it).
368 * 3) now this server gets nick "foobar" from outside, but
369 * has already the same defined locally. Current server
370 * would just issue "KILL foobar" to clean out dups. But,
371 * this is not fair. It should actually request another
372 * nick from local user or kill him/her...
374 /** Finish registering a user who has sent both NICK and USER.
375 * For local connections, possibly check IAuth; make sure there is a
376 * matching Client config block; clean the username field; check
377 * K/k-lines; check for "hacked" looking usernames; assign a numnick;
378 * and send greeting (WELCOME, ISUPPORT, MOTD, etc).
379 * For all connections, update the invisible user and operator counts;
380 * run IPcheck against their address; and forward the NICK.
382 * @param[in] cptr Client who introduced the user.
383 * @param[in,out] sptr Client who has been fully introduced.
384 * @return Zero or CPTR_KILLED.
386 int register_user(struct Client *cptr, struct Client *sptr)
390 struct User* user = cli_user(sptr);
393 user->last = CurrentTime;
394 parv[0] = cli_name(sptr);
395 parv[1] = parv[2] = NULL;
399 assert(cptr == sptr);
401 Count_unknownbecomesclient(sptr, UserStats);
404 * Set user's initial modes
406 set_initial_user_modes(sptr);
409 if(MyConnect(sptr) && cli_socket(sptr).ssl)
412 cli_handler(sptr) = CLIENT_HANDLER;
413 SetLocalNumNick(sptr);
416 feature_str(FEAT_NETWORK),
417 feature_str(FEAT_PROVIDER) ? " via " : "",
418 feature_str(FEAT_PROVIDER) ? feature_str(FEAT_PROVIDER) : "",
421 * This is a duplicate of the NOTICE but see below...
423 send_reply(sptr, RPL_YOURHOST, cli_name(&me), version);
424 send_reply(sptr, RPL_CREATED, creation);
425 send_reply(sptr, RPL_MYINFO, cli_name(&me), version, infousermodes,
426 infochanmodes, infochanmodeswithparams);
427 send_supported(sptr);
430 sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :You are connected to %s with %s", sptr,
431 cli_name(&me), ssl_cipherstr(cli_socket(sptr).ssl));
433 m_lusers(sptr, sptr, 1, parv);
436 if (cli_snomask(sptr) & SNO_NOISY)
437 set_snomask(sptr, cli_snomask(sptr) & SNO_NOISY, SNO_ADD);
438 if (feature_bool(FEAT_CONNEXIT_NOTICES))
439 sendto_opmask_butone(0, SNO_CONNEXIT,
440 "Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s%s>",
441 cli_name(sptr), user->username, user->host,
442 cli_sock_ip(sptr), get_client_class(sptr),
443 cli_info(sptr), NumNick(cptr) /* two %s's */);
444 IPcheck_connect_succeeded(sptr);
447 struct Client *acptr = user->server;
449 if (cli_from(acptr) != cli_from(sptr))
451 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
452 sptr, cli_name(&me), cli_name(user->server), cli_name(cli_from(acptr)),
453 cli_sockhost(cli_from(acptr)));
454 SetFlag(sptr, FLAG_KILLED);
455 return exit_client(cptr, sptr, &me, "NICK server wrong direction");
457 else if (HasFlag(acptr, FLAG_TS8))
458 SetFlag(sptr, FLAG_TS8);
461 * Check to see if this user is being propagated
462 * as part of a net.burst, or is using protocol 9.
463 * FIXME: This can be sped up - its stupid to check it for
464 * every NICK message in a burst again --Run.
466 for (; acptr != &me; acptr = cli_serv(acptr)->up)
468 if (IsBurst(acptr) || Protocol(acptr) < 10)
471 if (!IPcheck_remote_connect(sptr, (acptr != &me)))
474 * We ran out of bits to count this
476 sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from your host -- Ghost)",
477 sptr, cli_name(&me));
478 return exit_client(cptr, sptr, &me,"Too many connections from your host -- throttled");
483 /* If they get both +x and an account during registration, hide
484 * their hostmask here. Calling hide_hostmask() from IAuth's
485 * account assignment causes a numeric reply during registration.
487 if (HasHiddenHost(sptr))
488 hide_hostmask(sptr, HIDE_HOSTMASK_FLAG_HIDDENHOST);
489 if (IsInvisible(sptr))
490 ++UserStats.inv_clients;
496 FlagSet(&cli_confs(sptr)->value.aconf->conn_class->privs_dirty, PRIV_PROPAGATE);
497 client_set_privs(sptr, cli_confs(sptr)->value.aconf);
498 cli_handler(sptr) = OPER_HANDLER;
501 client_set_uprivs(sptr, cli_confs(sptr)->value.aconf);
503 if (MyUser(sptr) && HasPriv(sptr, PRIV_SEE_IDLETIME))
504 SetSeeIdletime(sptr);
506 tmpstr = umode_str(sptr);
507 /* Send full IP address to IPv6-grokking servers. */
508 sendcmdto_flag_serv_butone(user->server, CMD_NICK, cptr,
509 FLAG_IPV6, FLAG_LAST_FLAG,
510 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
511 cli_name(sptr), cli_hopcount(sptr) + 1,
513 user->username, user->realhost,
514 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
515 iptobase64(ip_base64, &cli_ip(sptr), sizeof(ip_base64), 1),
516 NumNick(sptr), cli_info(sptr));
517 /* Send fake IPv6 addresses to pre-IPv6 servers. */
518 sendcmdto_flag_serv_butone(user->server, CMD_NICK, cptr,
519 FLAG_LAST_FLAG, FLAG_IPV6,
520 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
521 cli_name(sptr), cli_hopcount(sptr) + 1,
523 user->username, user->realhost,
524 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
525 iptobase64(ip_base64, &cli_ip(sptr), sizeof(ip_base64), 0),
526 NumNick(sptr), cli_info(sptr));
528 /* Send user mode to client */
531 static struct Flags flags; /* automatically initialized to zeros */
532 /* To avoid sending +r to the client due to auth-on-connect, set
533 * the "old" FLAG_ACCOUNT bit to match the client's value.
536 FlagSet(&flags, FLAG_ACCOUNT);
538 FlagClr(&flags, FLAG_ACCOUNT);
541 send_reply(sptr, RPL_YOUREOPER);
542 sendto_opmask_butone(0, SNO_OLDSNO, "%s (%s@%s) is now operator (%c)",
543 cli_name(sptr), cli_user(sptr)->username, cli_sockhost(sptr),
544 IsOper(sptr) ? 'O' : 'o');
545 log_write(LS_OPER, L_INFO, 0, "OPER (<OOC>) by (%#C)", sptr);
548 if(*cli_connclass(sptr))
549 sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :Your connection class is: %s", sptr, cli_connclass(sptr));
551 sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :Your connection class is: %s", sptr, get_client_class(sptr));
552 if(HasPriv(sptr, PRIV_CHAN_LIMIT))
553 sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :You have no channel number limitation.", sptr);
555 unsigned int maxchan = cli_confs(sptr)->value.aconf ? ConfMaxChannels(cli_confs(sptr)->value.aconf): feature_int(FEAT_MAXCHANNELSPERUSER);
556 if(sptr -> maxchans > 0)
557 maxchan = sptr->maxchans;
558 sendcmdto_one(&me, CMD_NOTICE, sptr, "%C :You may join %d channels.", sptr, maxchan);
561 send_umode(cptr, sptr, &flags, ALL_UMODES, 0);
562 if ((cli_snomask(sptr) != SNO_DEFAULT) && HasFlag(sptr, FLAG_SERVNOTICE))
563 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
568 /** List of user mode characters. */
569 static const struct UserMode {
570 unsigned int flag; /**< User mode constant. */
571 char c; /**< Character corresponding to the mode. */
575 { FLAG_INVISIBLE, 'i' },
576 { FLAG_WALLOP, 'w' },
577 { FLAG_SERVNOTICE, 's' },
579 { FLAG_CHSERV, 'k' },
581 { FLAG_ACCOUNT, 'r' },
582 { FLAG_FAKEHOST, 'f' },
583 { FLAG_NOCHAN, 'n' },
584 { FLAG_NOIDLE, 'I' },
585 { FLAG_XTRAOP, 'X' },
586 { FLAG_NETSERV, 'S' },
587 { FLAG_HIDDENOPER, 'H' },
588 { FLAG_OVERRIDECC, 'c' },
589 { FLAG_WEBIRC, 'W' },
590 { FLAG_SEE_IDLETIME,'t' },
591 { FLAG_SECURITY_SERV,'D' },
592 { FLAG_HIDDENHOST, 'x' },
593 { FLAG_NOTCONN, 'Z' }
596 /** Length of #userModeList. */
597 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
600 * XXX - find a way to get rid of this
602 /** Nasty global buffer used for communications with umode_str() and others. */
603 static char umodeBuf[BUFSIZE];
605 /** Try to set a user's nickname.
606 * If \a sptr is a server, the client is being introduced for the first time.
607 * @param[in] cptr Client to set nickname.
608 * @param[in] sptr Client sending the NICK.
609 * @param[in] nick New nickname.
610 * @param[in] parc Number of arguments to NICK.
611 * @param[in] parv Argument list to NICK.
612 * @param[in] force Boolean; forced nickchange
613 * @return CPTR_KILLED if \a cptr was killed, else 0.
615 int set_nick_name(struct Client* cptr, struct Client* sptr,
616 const char* nick, int parc, char* parv[], unsigned int force)
618 if (IsServer(sptr)) {
621 * A server introducing a new client, change source
623 struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
624 assert(0 != new_client);
626 cli_hopcount(new_client) = atoi(parv[2]);
627 cli_lastnick(new_client) = atoi(parv[3]);
632 strcpy(cli_name(new_client), nick);
633 cli_user(new_client) = make_user(new_client);
634 cli_user(new_client)->server = sptr;
635 SetRemoteNumNick(new_client, parv[parc - 2]);
637 * IP# of remote client
639 base64toip(parv[parc - 3], &cli_ip(new_client));
641 add_client_to_list(new_client);
642 hAddClient(new_client);
644 cli_serv(sptr)->ghost = 0; /* :server NICK means end of net.burst */
645 ircd_strncpy(cli_username(new_client), parv[4], USERLEN);
646 ircd_strncpy(cli_user(new_client)->username, parv[4], USERLEN);
647 ircd_strncpy(cli_user(new_client)->host, parv[5], HOSTLEN);
648 ircd_strncpy(cli_user(new_client)->realhost, parv[5], HOSTLEN);
649 ircd_strncpy(cli_info(new_client), parv[parc - 1], REALLEN);
651 Count_newremoteclient(UserStats, sptr);
653 if (parc > 7 && *parv[6] == '+') {
654 /* (parc-4) -3 for the ip, numeric nick, realname */
655 set_user_mode(cptr, new_client, parc-7, parv+4, ALLOWMODES_WITHSECSERV);
658 return register_user(cptr, new_client);
660 else if ((cli_name(sptr))[0]) {
662 * Client changing its nick
664 * If the client belongs to me, then check to see
665 * if client is on any channels where it is currently
666 * banned. If so, do not allow the nick change to occur.
669 const char* channel_name;
670 struct Membership *member;
671 if (!force && !IsXtraOp(sptr) && (channel_name = find_no_nickchange_channel(sptr, nick))) {
672 return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
675 * Refuse nick change if the last nick change was less
676 * then 30 seconds ago. This is intended to get rid of
677 * clone bots doing NICK FLOOD. -SeKs
678 * If someone didn't change their nick for more then 60 seconds
679 * however, allow to do two nick changes immediately after another
680 * before limiting the nick flood. -Run
682 if (!force && (CurrentTime < cli_nextnick(cptr)))
684 cli_nextnick(cptr) += 2;
685 send_reply(cptr, ERR_NICKTOOFAST, parv[1],
686 cli_nextnick(cptr) - CurrentTime);
687 /* Send error message */
688 sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cli_name(cptr));
689 /* bounce NICK to user */
690 return 0; /* ignore nick change! */
693 /* Limit total to 1 change per NICK_DELAY seconds: */
694 cli_nextnick(cptr) += NICK_DELAY;
695 /* However allow _maximal_ 1 extra consecutive nick change: */
696 if (cli_nextnick(cptr) < CurrentTime)
697 cli_nextnick(cptr) = CurrentTime;
699 /* Invalidate all bans against the user so we check them again */
700 for (member = (cli_user(cptr))->channel; member;
701 member = member->next_channel)
702 ClearBanValid(member);
705 * Also set 'lastnick' to current time, if changed.
707 if (0 != ircd_strcmp(parv[0], nick))
708 cli_lastnick(sptr) = (sptr == cptr) ? TStime() : atoi(parv[2]);
711 * Client just changing his/her nick. If he/she is
712 * on a channel, send note of change to all clients
713 * on that channel. Propagate notice to other servers.
716 sendcmdto_common_channels_butone(sptr, CMD_NICK, NULL, ":%s", nick);
717 add_history(sptr, 1);
718 sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
722 sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
724 if ((cli_name(sptr))[0])
726 strcpy(cli_name(sptr), nick);
730 /* Local client setting NICK the first time */
731 strcpy(cli_name(sptr), nick);
733 return auth_set_nick(cli_auth(sptr), nick);
738 /** Calculate the hash value for a target.
739 * @param[in] target Pointer to target, cast to unsigned int.
740 * @return Hash value constructed from the pointer.
742 static unsigned char hash_target(unsigned int target)
744 return (unsigned char) (target >> 16) ^ (target >> 8);
747 /** Records \a target as a recent target for \a sptr.
748 * @param[in] sptr User who has sent to a new target.
749 * @param[in] target Target to add.
752 add_target(struct Client *sptr, void *target)
754 /* Ok, this shouldn't work esp on alpha
756 unsigned char hash = hash_target((unsigned long) target);
757 unsigned char* targets;
760 assert(cli_local(sptr));
762 targets = cli_targets(sptr);
767 for (i = 0; i < MAXTARGETS; ++i) {
768 if (targets[i] == hash)
774 memmove(&targets[RESERVEDTARGETS + 1],
775 &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
776 targets[RESERVEDTARGETS] = hash;
779 /** Check whether \a sptr can send to or join \a target yet.
780 * @param[in] sptr User trying to join a channel or send a message.
781 * @param[in] target Target of the join or message.
782 * @param[in] name Name of the target.
783 * @param[in] created If non-zero, trying to join a new channel.
784 * @return Non-zero if too many target changes; zero if okay to send.
786 int check_target_limit(struct Client *sptr, void *target, const char *name,
789 unsigned char hash = hash_target((unsigned long) target);
791 unsigned char* targets;
794 assert(cli_local(sptr));
795 targets = cli_targets(sptr);
797 if(HasPriv(sptr, PRIV_UNLIMITED_TARGET))
801 * Same target as last time?
803 if (targets[0] == hash)
805 for (i = 1; i < MAXTARGETS; ++i) {
806 if (targets[i] == hash) {
807 memmove(&targets[1], &targets[0], i);
816 if (CurrentTime < cli_nexttarget(sptr)) {
817 /* If user is invited to channel, give him/her a free target */
818 if (IsChannelName(name) && IsInvited(sptr, target))
821 if (cli_nexttarget(sptr) - CurrentTime < TARGET_DELAY + 8) {
825 cli_nexttarget(sptr) += 2;
826 send_reply(sptr, ERR_TARGETTOOFAST, name,
827 cli_nexttarget(sptr) - CurrentTime);
832 cli_nexttarget(sptr) += TARGET_DELAY;
833 if (cli_nexttarget(sptr) < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
834 cli_nexttarget(sptr) = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
837 memmove(&targets[1], &targets[0], MAXTARGETS - 1);
842 /** Allows a channel operator to avoid target change checks when
843 * sending messages to users on their channel.
844 * @param[in] source User sending the message.
845 * @param[in] nick Destination of the message.
846 * @param[in] channel Name of channel being sent to.
847 * @param[in] text Message to send.
848 * @param[in] is_notice If non-zero, use CNOTICE instead of CPRIVMSG.
850 /* Added 971023 by Run. */
851 int whisper(struct Client* source, const char* nick, const char* channel,
852 const char* text, int is_notice)
855 struct Channel* chptr;
856 struct Membership* membership;
860 assert(0 != channel);
861 assert(MyUser(source));
863 if (!(dest = FindUser(nick))) {
864 return send_reply(source, ERR_NOSUCHNICK, nick);
866 if (!(chptr = FindChannel(channel))) {
867 return send_reply(source, ERR_NOSUCHCHANNEL, channel);
870 * compare both users channel lists, instead of the channels user list
871 * since the link is the same, this should be a little faster for channels
872 * with a lot of users
874 for (membership = cli_user(source)->channel; membership; membership = membership->next_channel) {
875 if (chptr == membership->channel)
878 if (0 == membership) {
879 return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
881 if (!IsVoicedOrOpped(membership)) {
882 return send_reply(source, ERR_VOICENEEDED, chptr->chname);
885 * lookup channel in destination
887 assert(0 != cli_user(dest));
888 for (membership = cli_user(dest)->channel; membership; membership = membership->next_channel) {
889 if (chptr == membership->channel)
892 if (0 == membership || IsZombie(membership)) {
893 return send_reply(source, ERR_USERNOTINCHANNEL, cli_name(dest), chptr->chname);
895 if (is_silenced(source, dest))
899 sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
902 if (cli_user(dest)->away)
903 send_reply(source, RPL_AWAY, cli_name(dest), cli_user(dest)->away);
904 sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
910 /** Send a user mode change for \a cptr to neighboring servers.
911 * @param[in] cptr User whose mode is changing.
912 * @param[in] sptr Client who sent us the mode change message.
913 * @param[in] old Prior set of user flags.
914 * @param[in] prop If non-zero, also include FLAG_OPER.
916 void send_umode_out(struct Client *cptr, struct Client *sptr,
917 struct Flags *old, int prop)
919 int i, server = 0, ret;
920 struct Client *acptr;
922 if(cptr && (IsServer(cptr) || IsMe(cptr))) server = 1;
924 ret = send_umode(NULL, sptr, old, prop ? SEND_UMODES : SEND_UMODES_BUT_OPER, server);
926 for (i = HighestFd; i >= 0; i--)
928 if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
929 (acptr != cptr) && (acptr != sptr) && *umodeBuf)
930 sendcmdto_one(sptr, CMD_MODE, acptr, ret?"%s %s":"%s :%s", cli_name(sptr), umodeBuf);
932 if (cptr && MyUser(cptr))
933 send_umode(cptr, sptr, old, ALL_UMODES, 0);
937 /** Call \a fmt for each Client named in \a names.
938 * @param[in] sptr Client requesting information.
939 * @param[in] names Space-delimited list of nicknames.
940 * @param[in] rpl Base reply string for messages.
941 * @param[in] fmt Formatting callback function.
943 void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
949 struct Client* acptr;
956 mb = msgq_make(sptr, rpl_str(rpl), cli_name(&me), cli_name(sptr));
958 for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
959 if ((acptr = FindUser(name))) {
961 msgq_append(0, mb, " ");
962 (*fmt)(acptr, sptr, mb);
964 if (5 == ++arg_count)
967 send_buffer(sptr, mb, 0);
971 /** Set \a flag on \a cptr and possibly hide the client's hostmask.
972 * @param[in,out] cptr User who is getting a new flag.
973 * @param[in] flag Some flag that affects host-hiding (FLAG_HIDDENHOST, FLAG_ACCOUNT, FLAG_FAKEHOST).
978 hide_hostmask(struct Client *cptr, unsigned int flag)
980 struct Membership *chan;
983 if (flag & HIDE_HOSTMASK_FLAG_HIDDENHOST) {
984 /* Local users cannot set +x unless FEAT_HOST_HIDING is true. */
985 if (MyConnect(cptr) && !feature_bool(FEAT_HOST_HIDING))
988 if (flag & (HIDE_HOSTMASK_FLAG_ACCOUNT | HIDE_HOSTMASK_FLAG_FAKEHOST | HIDE_HOSTMASK_FLAG_FAKEIDENT)) {
989 /* Invalidate all bans against the user so we check them again */
990 for (chan = (cli_user(cptr))->channel; chan;
991 chan = chan->next_channel)
995 /* Set flags and stop if no fakehost has to be applied. */
996 if(flag & HIDE_HOSTMASK_FLAG_HIDDENHOST)
997 SetFlag(cptr, FLAG_HIDDENHOST);
998 if(flag & HIDE_HOSTMASK_FLAG_ACCOUNT)
999 SetFlag(cptr, FLAG_ACCOUNT);
1000 if(flag & HIDE_HOSTMASK_FLAG_FAKEHOST)
1001 SetFlag(cptr, FLAG_FAKEHOST);
1002 if(flag & HIDE_HOSTMASK_FLAG_FAKEIDENT)
1003 SetFlag(cptr, FLAG_FAKEIDENT);
1005 if(!HasHiddenHost(cptr))
1008 /* Generate new fakehost. */
1009 unsigned int reregister = 0;
1010 if(IsFakeHost(cptr) || IsAccount(cptr)) {
1011 if(IsFakeHost(cptr))
1012 ircd_strncpy(buf, cli_user(cptr)->fakehost, HOSTLEN);
1014 ircd_snprintf(0, buf, HOSTLEN, "%s.%s", cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST));
1015 if(strncmp(buf, cli_user(cptr)->host, HOSTLEN))
1016 reregister |= HIDE_HOSTMASK_FLAG_FAKEHOST;
1018 if(IsFakeIdent(cptr)) {
1019 if(strncmp(cli_user(cptr)->fakeuser, cli_user(cptr)->username, USERLEN))
1020 reregister |= HIDE_HOSTMASK_FLAG_FAKEIDENT;
1023 if (!reregister) return 0;
1025 /* Remove all "valid" marks on the bans. This forces them to be
1026 * rechecked if the ban is accessed again.
1028 for(chan = (cli_user(cptr))->channel; chan; chan = chan->next_channel) {
1029 ClearBanValid(chan);
1032 /* Quit user and set the previously generated fakehost. */
1033 sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Registered");
1034 if(reregister & HIDE_HOSTMASK_FLAG_FAKEHOST)
1035 ircd_strncpy(cli_user(cptr)->host, buf, HOSTLEN);
1036 if(reregister & HIDE_HOSTMASK_FLAG_FAKEIDENT)
1037 ircd_strncpy(cli_user(cptr)->username, cli_user(cptr)->fakeuser, USERLEN);
1040 /* ok, the client is now fully hidden, so let them know -- hikari */
1041 if(MyConnect(cptr)) {
1042 if (IsFakeIdent(cptr))
1043 send_reply(cptr, RPL_HOSTUSERHIDDEN, cli_user(cptr)->username, cli_user(cptr)->host);
1045 send_reply(cptr, RPL_HOSTHIDDEN, cli_user(cptr)->host);
1049 * Go through all channels the client was on, rejoin him
1050 * and set the modes, if any
1052 for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel)
1056 /* If the channel has delayed joins, we have to handle the join especially. */
1057 if((!(chan->channel->mode.mode & MODE_DELJOINS) && !IsInvisibleJoin(chan)) || IsChanOp(chan) || HasVoice(chan)) {
1058 sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr, 0,
1059 "%H", chan->channel);
1060 if(IsChanOp(chan) && HasVoice(chan)) {
1061 sendcmdto_channel_butserv_butone(&his, CMD_MODE, chan->channel, cptr, 0,
1062 "%H +ov %C %C", chan->channel, cptr,
1065 else if(IsChanOp(chan) || HasVoice(chan)) {
1066 sendcmdto_channel_butserv_butone(&his, CMD_MODE, chan->channel, cptr, 0,
1067 "%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr);
1071 SetDelayedJoin(chan);
1077 /** Set a user's mode. This function checks that \a cptr is trying to
1078 * set his own mode, prevents local users from setting inappropriate
1079 * modes through this function, and applies any other side effects of
1080 * a successful mode change.
1082 * @param[in,out] cptr User setting someone's mode.
1083 * @param[in] sptr Client who sent the mode change message.
1084 * @param[in] parc Number of parameters in \a parv.
1085 * @param[in] parv Parameters to MODE.
1086 * @param[in] allow_modes ALLOWMODES_ANY for any mode, ALLOWMODES_DEFAULT for
1087 * only permitting legitimate default user modes.
1090 int set_user_mode(struct Client *cptr, struct Client *sptr, int parc,
1091 char *parv[], int allow_modes)
1097 struct Flags setflags;
1098 unsigned int tmpmask = 0;
1099 int snomask_given = 0;
1102 int do_host_hiding = 0;
1103 char* account = NULL, *fakehost = NULL;
1104 struct Membership *chan;
1112 for (i = 0; i < USERMODELIST_SIZE; i++)
1114 if (HasFlag(sptr, userModeList[i].flag) &&
1115 (userModeList[i].flag != FLAG_ACCOUNT) &&
1116 (userModeList[i].flag != FLAG_FAKEHOST))
1117 *m++ = userModeList[i].c;
1120 send_reply(sptr, RPL_UMODEIS, buf);
1121 if (HasFlag(sptr, FLAG_SERVNOTICE) && MyConnect(sptr)
1122 && cli_snomask(sptr) !=
1123 (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
1124 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1129 * find flags already set for user
1130 * why not just copy them?
1132 setflags = cli_flags(sptr);
1134 if (MyConnect(sptr))
1135 tmpmask = cli_snomask(sptr);
1138 * parse mode change string(s)
1140 for (p = &parv[2]; *p && p<&parv[parc]; p++) { /* p is changed in loop too */
1141 for (m = *p; *m; m++) {
1150 if (*(p + 1) && is_snomask(*(p + 1))) {
1152 tmpmask = umode_make_snomask(tmpmask, *++p, what);
1153 tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
1156 tmpmask = (what == MODE_ADD) ?
1157 (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
1159 SetServNotice(sptr);
1161 ClearServNotice(sptr);
1164 if (what == MODE_ADD)
1170 if (what == MODE_ADD)
1173 ClrFlag(sptr, FLAG_OPER);
1174 ClrFlag(sptr, FLAG_LOCOP);
1175 if (MyConnect(sptr))
1177 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1178 cli_handler(sptr) = CLIENT_HANDLER;
1183 if (what == MODE_ADD)
1187 ClrFlag(sptr, FLAG_OPER);
1188 ClrFlag(sptr, FLAG_LOCOP);
1189 if (MyConnect(sptr))
1191 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1192 cli_handler(sptr) = CLIENT_HANDLER;
1197 if (what == MODE_ADD)
1200 ClearInvisible(sptr);
1203 if (what == MODE_ADD)
1209 if (what == MODE_ADD)
1210 SetOverrideCC(sptr);
1212 ClearOverrideCC(sptr);
1215 if (what == MODE_ADD)
1216 SetChannelService(sptr);
1218 ClearChannelService(sptr);
1221 if (what == MODE_ADD)
1227 if(what == MODE_ADD && !FlagHas(&setflags, FLAG_HIDDENHOST) &&
1228 (!MyConnect(sptr) || feature_bool(FEAT_HOST_HIDING))) {
1230 SetHiddenHost(sptr);
1234 if (what == MODE_ADD)
1240 if (what == MODE_ADD)
1246 if (what == MODE_ADD)
1252 if (what == MODE_ADD)
1258 if (what == MODE_ADD)
1259 SetHiddenOper(sptr);
1261 ClearHiddenOper(sptr);
1264 if (what == MODE_ADD)
1265 SetSecurityServ(sptr);
1267 ClearSecurityServ(sptr);
1270 if (what == MODE_ADD)
1276 if (*(p + 1) && (what == MODE_ADD)) {
1279 for(chan = (cli_user(sptr))->channel; chan; chan = chan->next_channel) ClearBanValid(chan);
1280 if(HasFlag(sptr, FLAG_HIDDENHOST))
1283 /* There is no -r */
1286 if (*(p + 1) && (what == MODE_ADD)) {
1289 for(chan = (cli_user(sptr))->channel; chan; chan = chan->next_channel) ClearBanValid(chan);
1290 if(HasFlag(sptr, FLAG_HIDDENHOST))
1293 /* There is no -f */
1295 case 't': /* This can only be set by servers and cannot be removed. */
1296 if (what == MODE_ADD)
1297 SetSeeIdletime(sptr);
1299 #ifdef OLD_OGN_IRCU_COMPAT
1300 case 'z': /* Formerly SSL mode; we ignore it. */
1304 if (what == MODE_ADD)
1310 send_reply(sptr, ERR_UMODEUNKNOWNFLAG, *m);
1316 * Evaluate rules for new user mode
1317 * Stop users making themselves operators too easily:
1319 if (!IsServer(cptr) && !IsMe(cptr))
1321 if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr))
1323 if (!FlagHas(&setflags, FLAG_LOCOP) && IsLocOp(sptr))
1325 if (!FlagHas(&setflags, FLAG_ACCOUNT) && IsAccount(sptr))
1326 ClrFlag(sptr, FLAG_ACCOUNT);
1327 if (!FlagHas(&setflags, FLAG_FAKEHOST) && IsFakeHost(sptr))
1328 ClrFlag(sptr, FLAG_FAKEHOST);
1329 if (!FlagHas(&setflags, FLAG_SEE_IDLETIME) && IsSeeIdletime(sptr))
1330 ClrFlag(sptr, FLAG_SEE_IDLETIME);
1331 if (!FlagHas(&setflags, FLAG_NOTCONN) && IsNotConn(sptr))
1332 ClrFlag(sptr, FLAG_NOTCONN);
1334 * new umode; servers and privileged opers can set it, local users cannot;
1335 * prevents users from /kick'ing or /mode -o'ing
1337 if (!FlagHas(&setflags, FLAG_CHSERV) && IsChannelService(sptr) && !HasPriv(sptr, PRIV_UMODE_CHSERV))
1338 ClearChannelService(sptr);
1339 if (!FlagHas(&setflags, FLAG_NOCHAN) && IsNoChan(sptr) && !HasPriv(sptr, PRIV_UMODE_NOCHAN))
1341 if (!FlagHas(&setflags, FLAG_NOIDLE) && IsNoIdle(sptr) && !HasPriv(sptr, PRIV_UMODE_NOIDLE))
1343 if (!FlagHas(&setflags, FLAG_XTRAOP) && IsXtraOp(sptr) && (!IsOper(sptr) || !HasPriv(sptr, PRIV_UMODE_XTRAOP)))
1345 if (!FlagHas(&setflags, FLAG_NETSERV) && IsNetServ(sptr) && (!HasPriv(sptr, PRIV_UMODE_NETSERV) || !HasFlag(sptr, FLAG_SECURITY_SERV)))
1347 if (!FlagHas(&setflags, FLAG_HIDDENOPER) && IsHiddenOper(sptr) && !IsOper(sptr))
1348 ClearHiddenOper(sptr);
1349 if (!FlagHas(&setflags, FLAG_OVERRIDECC) && IsOverrideCC(sptr) && !HasPriv(sptr, PRIV_UMODE_OVERRIDECC))
1350 ClearOverrideCC(sptr);
1351 /* Opers are able to fake the webirc usermode only if FEAT_FAKE_WEBIRC is true. */
1352 if (!FlagHas(&setflags, FLAG_WEBIRC) && IsWebIRC(sptr) && !(feature_bool(FEAT_FAKE_WEBIRC) && IsOper(sptr)))
1355 * only send wallops to opers
1357 if (feature_bool(FEAT_WALLOPS_OPER_ONLY) && !IsAnOper(sptr) &&
1358 !FlagHas(&setflags, FLAG_WALLOP))
1360 if (feature_bool(FEAT_HIS_SNOTICES_OPER_ONLY) && MyConnect(sptr) &&
1361 !IsAnOper(sptr) && !FlagHas(&setflags, FLAG_SERVNOTICE))
1363 ClearServNotice(sptr);
1364 set_snomask(sptr, 0, SNO_SET);
1366 if (feature_bool(FEAT_HIS_DEBUG_OPER_ONLY) &&
1367 !IsAnOper(sptr) && !FlagHas(&setflags, FLAG_DEBUG))
1370 if (allow_modes != ALLOWMODES_WITHSECSERV) {
1371 if (!FlagHas(&setflags, FLAG_SECURITY_SERV) && IsSecurityServ(sptr)) {
1372 ClearSecurityServ(sptr);
1373 sendto_opmask_butone(0, SNO_OLDSNO, "Someone tried to set mode +D to %s - Access denied",cli_name(sptr));
1376 if (MyConnect(sptr))
1378 if ((FlagHas(&setflags, FLAG_OPER) || FlagHas(&setflags, FLAG_LOCOP)) &&
1380 det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPERATOR);
1382 if (SendServNotice(sptr))
1384 if (tmpmask != cli_snomask(sptr))
1385 set_snomask(sptr, tmpmask, SNO_SET);
1386 if (cli_snomask(sptr) && snomask_given)
1387 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1390 set_snomask(sptr, 0, SNO_SET);
1393 * Compare new flags with old flags and send string which
1394 * will cause servers to update correctly.
1396 if (!FlagHas(&setflags, FLAG_ACCOUNT) && IsAccount(sptr)) {
1397 int len = ACCOUNTLEN;
1399 if ((ts = strchr(account, ':'))) {
1400 len = (ts++) - account;
1401 cli_user(sptr)->acc_create = atoi(ts);
1402 Debug((DEBUG_DEBUG, "Received timestamped account in user mode; "
1403 "account \"%s\", timestamp %Tu", account,
1404 cli_user(sptr)->acc_create));
1406 ircd_strncpy(cli_user(sptr)->account, account, len);
1408 if (!FlagHas(&setflags, FLAG_FAKEHOST) && IsFakeHost(sptr)) {
1409 ircd_strncpy(cli_user(sptr)->fakehost, fakehost, HOSTLEN);
1412 if (IsRegistered(sptr)) {
1414 hide_hostmask(sptr, 0);
1416 if (!FlagHas(&setflags, FLAG_OPER) && IsOper(sptr)) {
1419 client_set_privs(sptr, NULL); /* may set propagate privilege */
1421 if(MyConnect(sptr)) {
1422 sendto_opmask_butone(0, SNO_OLDSNO, "%s (%s@%s) is now operator (%c)",
1423 cli_name(sptr), cli_user(sptr)->username,
1424 cli_sockhost(sptr), IsOper(sptr) ? 'O' : 'o');
1425 log_write(LS_OPER, L_INFO, 0, "OPER (<OOM>) by (%#C)", sptr);
1426 cli_handler(sptr) = OPER_HANDLER;
1427 send_reply(sptr, RPL_YOUREOPER);
1430 if (FlagHas(&setflags, FLAG_OPER) && !IsOper(sptr)) {
1433 /* remember propagate privilege setting */
1434 if (HasPriv(sptr, PRIV_PROPAGATE)) {
1437 if (FlagHas(&setflags, FLAG_OPER) && !IsOper(sptr)) {
1438 /* user no longer oper */
1439 assert(UserStats.opers > 0);
1441 client_set_privs(sptr, NULL); /* will clear propagate privilege */
1442 client_set_uprivs(sptr, cli_confs(sptr)->value.aconf);
1444 if (FlagHas(&setflags, FLAG_INVISIBLE) && !IsInvisible(sptr)) {
1445 assert(UserStats.inv_clients > 0);
1446 --UserStats.inv_clients;
1448 if (!FlagHas(&setflags, FLAG_INVISIBLE) && IsInvisible(sptr)) {
1449 ++UserStats.inv_clients;
1451 assert(UserStats.opers <= UserStats.clients + UserStats.unknowns);
1452 assert(UserStats.inv_clients <= UserStats.clients + UserStats.unknowns);
1453 send_umode_out(cptr, sptr, &setflags, prop);
1459 /** Build a mode string to describe modes for \a cptr.
1460 * @param[in] cptr Some user.
1461 * @return Pointer to a static buffer.
1463 char *umode_str(struct Client *cptr)
1465 /* Maximum string size: "owidgrx\0" */
1468 struct Flags c_flags = cli_flags(cptr);
1470 if (!HasPriv(cptr, PRIV_PROPAGATE))
1471 FlagClr(&c_flags, FLAG_OPER);
1473 for (i = 0; i < USERMODELIST_SIZE; ++i)
1475 if (FlagHas(&c_flags, userModeList[i].flag) &&
1476 userModeList[i].flag >= FLAG_GLOBAL_UMODES)
1477 *m++ = userModeList[i].c;
1480 /* Append the arguments for the flags. They have to be appended
1481 * in the right order. See the order of userModeList[].
1484 if (IsAccount(cptr)) {
1485 char* t = cli_user(cptr)->account;
1488 while ((*m++ = *t++))
1491 /* If timestamped, append the timestamp directly to the accountname
1492 * separated with a colon
1494 if (cli_user(cptr)->acc_create) {
1496 Debug((DEBUG_DEBUG, "Sending timestamped account in user mode for "
1497 "account \"%s\"; timestamp %Tu", cli_user(cptr)->account,
1498 cli_user(cptr)->acc_create));
1499 ircd_snprintf(0, t = nbuf, sizeof(nbuf), ":%Tu",
1500 cli_user(cptr)->acc_create);
1501 m--; /* back up over previous nul-termination */
1502 while ((*m++ = *t++))
1506 --m; /* back up over previous nul-termination */
1509 if(IsFakeHost(cptr)) {
1510 char* t = cli_user(cptr)->fakehost;
1512 while((*m++ = *t++)) ; /* Empty loop */
1513 --m; /* back up over previous nul-termination */
1518 return umodeBuf; /* Note: static buffer, gets
1519 overwritten by send_umode() */
1522 /** Send a mode change string for \a sptr to \a cptr.
1523 * @param[in] cptr Destination of mode change message.
1524 * @param[in] sptr User whose mode has changed.
1525 * @param[in] old Pre-change set of modes for \a sptr.
1526 * @param[in] sendset One of ALL_UMODES, SEND_UMODES_BUT_OPER,
1527 * @param[in] serv_modes Set to 1 if you want to send ACCOUNT and FAKEHOST with this command.
1528 * @return 1 if ":" is already used in the buffer, 0 otherwise. Always 0 if \a serv_modes is 0.
1529 * SEND_UMODES, to select which changed user modes to send.
1531 int send_umode(struct Client *cptr, struct Client *sptr, struct Flags *old,
1532 int sendset, int serv_modes)
1537 int what = MODE_NULL;
1538 int add_fakehost = 0, add_account = 0;
1541 * Build a string in umodeBuf to represent the change in the user's
1542 * mode between the new (cli_flags(sptr)) and 'old', but skipping
1543 * the modes indicated by sendset.
1547 for (i = 0; i < USERMODELIST_SIZE; ++i)
1549 flag = userModeList[i].flag;
1550 if (FlagHas(old, flag)
1551 == HasFlag(sptr, flag))
1554 /* Account is not shown to the user as umode. */
1555 if(flag == FLAG_ACCOUNT) {
1556 if(!serv_modes || FlagHas(old, flag)) continue;
1560 if(flag == FLAG_FAKEHOST) {
1561 /* Removing a fakehost is not possible. Ignore it. */
1562 if(!serv_modes || FlagHas(old, flag)) continue;
1570 case SEND_UMODES_BUT_OPER:
1571 if (flag == FLAG_OPER)
1573 /* and fall through */
1575 if (flag < FLAG_GLOBAL_UMODES)
1579 if (FlagHas(old, flag))
1581 if (what == MODE_DEL)
1582 *m++ = userModeList[i].c;
1587 *m++ = userModeList[i].c;
1590 else /* !FlagHas(old, flag) */
1592 if (what == MODE_ADD)
1593 *m++ = userModeList[i].c;
1598 *m++ = userModeList[i].c;
1604 char* t = cli_user(sptr)->account;
1611 while ((*m++ = *t++)) /* Empty loop */ ;
1612 if(cli_user(sptr)->acc_create) {
1614 ircd_snprintf(0, t = nbuf, sizeof(nbuf), ":%Tu", cli_user(sptr)->acc_create);
1615 m--; /* back up over previous nul-termination */
1616 while ((*m++ = *t++)) /* Empty loop */ ;
1618 --m; /* back up over previous nul-termination */
1622 char* t = cli_user(sptr)->fakehost;
1627 while((*m++ = *t++)) ; /* Empty loop */
1628 --m; /* back up over previous nul-termination */
1632 if (*umodeBuf && cptr)
1633 sendcmdto_one(sptr, CMD_MODE, cptr, ret?"%s %s":"%s :%s", cli_name(sptr), umodeBuf);
1638 * Check to see if this resembles a sno_mask. It is if 1) there is
1639 * at least one digit and 2) The first digit occurs before the first
1640 * alphabetic character.
1641 * @param[in] word Word to check for sno_mask-ness.
1642 * @return Non-zero if \a word looks like a server notice mask; zero if not.
1644 int is_snomask(char *word)
1648 for (; *word; word++)
1651 else if (IsAlpha(*word))
1657 /** Update snomask \a oldmask according to \a arg and \a what.
1658 * @param[in] oldmask Original user mask.
1659 * @param[in] arg Update string (either a number or '+'/'-' followed by a number).
1660 * @param[in] what MODE_ADD if adding the mask.
1661 * @return New value of service notice mask.
1663 unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
1665 unsigned int sno_what;
1666 unsigned int newmask;
1670 if (what == MODE_ADD)
1675 else if (*arg == '-')
1678 if (what == MODE_ADD)
1684 sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
1685 /* pity we don't have strtoul everywhere */
1686 newmask = (unsigned int)atoi(arg);
1687 if (sno_what == SNO_DEL)
1688 newmask = oldmask & ~newmask;
1689 else if (sno_what == SNO_ADD)
1694 /** Remove \a cptr from the singly linked list \a list.
1695 * @param[in] cptr Client to remove from list.
1696 * @param[in,out] list Pointer to head of list containing \a cptr.
1698 static void delfrom_list(struct Client *cptr, struct SLink **list)
1701 struct SLink* prv = NULL;
1703 for (tmp = *list; tmp; tmp = tmp->next) {
1704 if (tmp->value.cptr == cptr) {
1706 prv->next = tmp->next;
1716 /** Set \a cptr's server notice mask, according to \a what.
1717 * @param[in,out] cptr Client whose snomask is updating.
1718 * @param[in] newmask Base value for new snomask.
1719 * @param[in] what One of SNO_ADD, SNO_DEL, SNO_SET, to choose operation.
1721 void set_snomask(struct Client *cptr, unsigned int newmask, int what)
1723 unsigned int oldmask, diffmask; /* unsigned please */
1727 oldmask = cli_snomask(cptr);
1729 if (what == SNO_ADD)
1731 else if (what == SNO_DEL)
1732 newmask = oldmask & ~newmask;
1733 else if (what != SNO_SET) /* absolute set, no math needed */
1734 sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
1736 newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
1738 diffmask = oldmask ^ newmask;
1740 for (i = 0; diffmask >> i; i++) {
1741 if (((diffmask >> i) & 1))
1743 if (((newmask >> i) & 1))
1746 tmp->next = opsarray[i];
1747 tmp->value.cptr = cptr;
1751 /* not real portable :( */
1752 delfrom_list(cptr, &opsarray[i]);
1755 cli_snomask(cptr) = newmask;
1758 /** Check whether \a sptr is allowed to send a message to \a acptr.
1759 * If \a sptr is a remote user, it means some server has an outdated
1760 * SILENCE list for \a acptr, so send the missing SILENCE mask(s) back
1761 * in the direction of \a sptr. Skip the check if \a sptr is a server.
1762 * @param[in] sptr Client trying to send a message.
1763 * @param[in] acptr Destination of message.
1764 * @return Non-zero if \a sptr is SILENCEd by \a acptr, zero if not.
1766 int is_silenced(struct Client *sptr, struct Client *acptr)
1770 size_t buf_used, slen;
1773 if (IsServer(sptr) || !(user = cli_user(acptr))
1774 || !(found = find_ban(sptr, user->silence)))
1776 assert(!(found->flags & BAN_EXCEPTION));
1777 if (!MyConnect(sptr)) {
1778 /* Buffer positive silence to send back. */
1779 buf_used = strlen(found->banstr);
1780 memcpy(buf, found->banstr, buf_used);
1781 /* Add exceptions to buffer. */
1782 for (found = user->silence; found; found = found->next) {
1783 if (!(found->flags & BAN_EXCEPTION))
1785 slen = strlen(found->banstr);
1786 if (buf_used + slen + 4 > 400) {
1787 buf[buf_used] = '\0';
1788 sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr, buf);
1792 buf[buf_used++] = ',';
1793 buf[buf_used++] = '+';
1794 buf[buf_used++] = '~';
1795 memcpy(buf + buf_used, found->banstr, slen);
1798 /* Flush silence buffer. */
1800 buf[buf_used] = '\0';
1801 sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr, buf);
1808 /** Send RPL_ISUPPORT lines to \a cptr.
1809 * @param[in] cptr Client to send ISUPPORT to.
1813 send_supported(struct Client *cptr)
1815 char featurebuf[512];
1817 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES1, FEATURESVALUES1);
1818 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1819 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES2, FEATURESVALUES2);
1820 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1822 return 0; /* convenience return, if it's ever needed */
1825 /* vim: shiftwidth=2