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.
34 #include "ircd_alloc.h"
35 #include "ircd_chattr.h"
36 #include "ircd_features.h"
38 #include "ircd_policy.h"
39 #include "ircd_reply.h"
40 #include "ircd_snprintf.h"
41 #include "ircd_string.h"
50 #include "querycmds.h"
56 #include "s_serv.h" /* max_client_count */
60 #include "supported.h"
66 #include "handlers.h" /* m_motd and m_lusers */
76 static int userCount = 0;
79 * 'make_user' add's an User information block to a client
80 * if it was not previously allocated.
82 struct User *make_user(struct Client *cptr)
86 if (!cli_user(cptr)) {
87 cli_user(cptr) = (struct User*) MyMalloc(sizeof(struct User));
88 assert(0 != cli_user(cptr));
90 /* All variables are 0 by default */
91 memset(cli_user(cptr), 0, sizeof(struct User));
95 cli_user(cptr)->refcnt = 1;
97 return cli_user(cptr);
103 * Decrease user reference count by one and release block, if count reaches 0.
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);
127 void user_count_memory(size_t* count_out, size_t* bytes_out)
129 assert(0 != count_out);
130 assert(0 != bytes_out);
131 *count_out = userCount;
132 *bytes_out = userCount * sizeof(struct User);
139 * Local function to find the next matching client. The search
140 * can be continued from the specified client entry. Normal
143 * for (x = client; x = next_client(x,mask); x = x->next)
144 * HandleMatchingClient;
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)))
169 * Do the basic thing in delivering the message (command)
170 * across the relays to the specific server (server) for
173 * Note: The command is a format string and *MUST* be
174 * of prefixed style (e.g. ":%s COMMAND %s ...").
175 * Command can have only max 8 parameters.
177 * server parv[server] is the parameter identifying the
181 * parv[server] is replaced with the pointer to the
182 * real servername from the matched client (I'm lazy
185 * returns: (see #defines)
187 int hunt_server_cmd(struct Client *from, const char *cmd, const char *tok,
188 struct Client *one, int MustBeOper, const char *pattern,
189 int server, int parc, char *parv[])
191 struct Client *acptr;
194 /* Assume it's me, if no server or an unregistered client */
195 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
196 return (HUNTED_ISME);
198 if (MustBeOper && !IsPrivileged(from))
200 send_reply(from, ERR_NOPRIVILEGES);
201 return HUNTED_NOSUCH;
204 /* Make sure it's a server */
206 /* Make sure it's a server */
207 if (!strchr(to, '*')) {
208 if (0 == (acptr = FindClient(to)))
209 return HUNTED_NOSUCH;
212 acptr = cli_user(acptr)->server;
213 } else if (!(acptr = find_match_server(to))) {
214 send_reply(from, ERR_NOSUCHSERVER, to);
215 return (HUNTED_NOSUCH);
217 } else if (!(acptr = FindNServer(to)))
218 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 int hunt_server_prio_cmd(struct Client *from, const char *cmd, const char *tok,
239 struct Client *one, int MustBeOper,
240 const char *pattern, int server, int parc,
243 struct Client *acptr;
246 /* Assume it's me, if no server or an unregistered client */
247 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
248 return (HUNTED_ISME);
250 /* Make sure it's a server */
252 /* Make sure it's a server */
253 if (!strchr(to, '*')) {
254 if (0 == (acptr = FindClient(to)))
255 return HUNTED_NOSUCH;
258 acptr = cli_user(acptr)->server;
259 } else if (!(acptr = find_match_server(to))) {
260 send_reply(from, ERR_NOSUCHSERVER, to);
261 return (HUNTED_NOSUCH);
263 } else if (!(acptr = FindNServer(to)))
264 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
267 return (HUNTED_ISME);
269 if (MustBeOper && !IsPrivileged(from)) {
270 send_reply(from, ERR_NOPRIVILEGES);
271 return HUNTED_NOSUCH;
274 assert(!IsServer(from));
276 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
278 sendcmdto_prio_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
279 parv[4], parv[5], parv[6], parv[7], parv[8]);
281 return (HUNTED_PASS);
285 * 'do_nick_name' ensures that the given parameter (nick) is really a proper
286 * string for a nickname (note, the 'nick' may be modified in the process...)
288 * RETURNS the length of the final NICKNAME (0, if nickname is invalid)
290 * Nickname characters are in range 'A'..'}', '_', '-', '0'..'9'
291 * anything outside the above set will terminate nickname.
292 * In addition, the first character cannot be '-' or a Digit.
295 * The '~'-character should be allowed, but a change should be global,
296 * some confusion would result if only few servers allowed it...
298 int do_nick_name(char* nick)
301 char* end = ch + NICKLEN;
304 if (*ch == '-' || IsDigit(*ch)) /* first character in [0..9-] */
307 for ( ; (ch < end) && *ch; ++ch)
308 if (!IsNickChar(*ch))
319 * Copy `source' to `dest', replacing all occurances of '~' and characters that
320 * are not `isIrcUi' by an underscore.
321 * Copies at most USERLEN - 1 characters or up till the first control character.
322 * If `tilde' is true, then a tilde is prepended to `dest'.
323 * Note that `dest' and `source' can point to the same area or to different
324 * non-overlapping areas.
326 static char *clean_user_id(char *dest, char *source, int tilde)
333 ch = *s++; /* Store first character to copy: */
336 *d++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
339 while (ch && !IsCntrl(ch) && rlen--)
341 char nch = *s++; /* Store next character to copy */
342 *d++ = IsUserChar(ch) ? ch : '_'; /* This possibly overwrites it */
355 * This function is called when both NICK and USER messages
356 * have been accepted for the client, in whatever order. Only
357 * after this the USER message is propagated.
359 * NICK's must be propagated at once when received, although
360 * it would be better to delay them too until full info is
361 * available. Doing it is not so simple though, would have
362 * to implement the following:
364 * 1) user telnets in and gives only "NICK foobar" and waits
365 * 2) another user far away logs in normally with the nick
366 * "foobar" (quite legal, as this server didn't propagate it).
367 * 3) now this server gets nick "foobar" from outside, but
368 * has already the same defined locally. Current server
369 * would just issue "KILL foobar" to clean out dups. But,
370 * this is not fair. It should actually request another
371 * nick from local user or kill him/her...
373 int register_user(struct Client *cptr, struct Client *sptr,
374 const char *nick, char *username)
376 struct ConfItem* aconf;
380 char c = 0; /* not alphanum */
381 char d = 'a'; /* not a digit */
389 short digitgroups = 0;
390 struct User* user = cli_user(sptr);
393 user->last = CurrentTime;
394 parv[0] = cli_name(sptr);
395 parv[1] = parv[2] = NULL;
399 static time_t last_too_many1;
400 static time_t last_too_many2;
402 assert(cptr == sptr);
403 switch (conf_check_client(sptr))
407 case ACR_NO_AUTHORIZATION:
408 sendto_opmask_butone(0, SNO_UNAUTH, "Unauthorized connection from %s.",
409 get_client_name(sptr, HIDE_IP));
410 ++ServerStats->is_ref;
411 return exit_client(cptr, sptr, &me,
412 "No Authorization - use another server");
413 case ACR_TOO_MANY_IN_CLASS:
414 if (CurrentTime - last_too_many1 >= (time_t) 60)
416 last_too_many1 = CurrentTime;
417 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections in "
418 "class %i for %s.", get_client_class(sptr),
419 get_client_name(sptr, SHOW_IP));
421 ++ServerStats->is_ref;
422 IPcheck_connect_fail(cli_ip(sptr));
423 return exit_client(cptr, sptr, &me,
424 "Sorry, your connection class is full - try "
425 "again later or try another server");
426 case ACR_TOO_MANY_FROM_IP:
427 if (CurrentTime - last_too_many2 >= (time_t) 60)
429 last_too_many2 = CurrentTime;
430 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections from "
432 get_client_name(sptr, SHOW_IP));
434 ++ServerStats->is_ref;
435 return exit_client(cptr, sptr, &me,
436 "Too many connections from your host");
437 case ACR_ALREADY_AUTHORIZED:
438 /* Can this ever happen? */
440 ++ServerStats->is_ref;
441 IPcheck_connect_fail(cli_ip(sptr));
442 return exit_client(cptr, sptr, &me, "Unknown error -- Try again");
444 ircd_strncpy(user->host, cli_sockhost(sptr), HOSTLEN);
445 ircd_strncpy(user->realhost, cli_sockhost(sptr), HOSTLEN);
446 aconf = cli_confs(sptr)->value.aconf;
448 clean_user_id(user->username,
449 (cli_flags(sptr) & FLAGS_GOTID) ? cli_username(sptr) : username,
450 (cli_flags(sptr) & FLAGS_DOID) && !(cli_flags(sptr) & FLAGS_GOTID));
452 if ((user->username[0] == '\0')
453 || ((user->username[0] == '~') && (user->username[1] == '\000')))
454 return exit_client(cptr, sptr, &me, "USER: Bogus userid.");
456 if (!EmptyString(aconf->passwd)
457 && !(IsDigit(*aconf->passwd) && !aconf->passwd[1])
458 && strcmp(cli_passwd(sptr), aconf->passwd))
460 ServerStats->is_ref++;
461 IPcheck_connect_fail(cli_ip(sptr));
462 send_reply(sptr, ERR_PASSWDMISMATCH);
463 return exit_client(cptr, sptr, &me, "Bad Password");
465 memset(cli_passwd(sptr), 0, sizeof(cli_passwd(sptr)));
467 * following block for the benefit of time-dependent K:-lines
469 if (find_kill(sptr)) {
470 ServerStats->is_ref++;
471 IPcheck_connect_fail(cli_ip(sptr));
472 return exit_client(cptr, sptr, &me, "K-lined");
475 * Check for mixed case usernames, meaning probably hacked. Jon2 3-94
476 * Summary of rules now implemented in this patch: Ensor 11-94
477 * In a mixed-case name, if first char is upper, one more upper may
478 * appear anywhere. (A mixed-case name *must* have an upper first
479 * char, and may have one other upper.)
480 * A third upper may appear if all 3 appear at the beginning of the
481 * name, separated only by "others" (-/_/.).
482 * A single group of digits is allowed anywhere.
483 * Two groups of digits are allowed if at least one of the groups is
484 * at the beginning or the end.
485 * Only one '-', '_', or '.' is allowed (or two, if not consecutive).
486 * But not as the first or last char.
487 * No other special characters are allowed.
488 * Name must contain at least one letter.
490 tmpstr2 = tmpstr = (username[0] == '~' ? &username[1] : username);
491 while (*tmpstr && !badid)
503 if ((leadcaps || pos == 1) && !lower && !digits)
509 if (pos == 1 || !IsDigit(d))
516 else if (c == '-' || c == '_' || c == '.')
521 else if (d == '-' || d == '_' || d == '.' || other > 2)
530 if (lower && upper && (!leadcaps || leadcaps > 3 ||
531 (upper > 2 && upper > leadcaps)))
533 else if (digitgroups == 2 && !(IsDigit(tmpstr2[0]) || IsDigit(c)))
535 else if ((!lower && !upper) || !IsAlnum(c))
538 if (badid && (!(cli_flags(sptr) & FLAGS_GOTID) ||
539 strcmp(cli_username(sptr), username) != 0))
541 ServerStats->is_ref++;
543 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
544 ":Your username is invalid.");
545 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
546 ":Connect with your real username, in lowercase.");
547 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
548 ":If your mail address were foo@bar.com, your username "
550 return exit_client(cptr, sptr, &me, "USER: Bad username");
552 Count_unknownbecomesclient(sptr, UserStats);
555 ircd_strncpy(user->username, username, USERLEN);
556 Count_newremoteclient(UserStats, user->server);
560 if (IsInvisible(sptr))
561 ++UserStats.inv_clients;
565 if (MyConnect(sptr)) {
566 cli_handler(sptr) = CLIENT_HANDLER;
567 release_dns_reply(sptr);
569 send_reply(sptr, RPL_WELCOME, nick);
571 * This is a duplicate of the NOTICE but see below...
573 send_reply(sptr, RPL_YOURHOST, cli_name(&me), version);
574 send_reply(sptr, RPL_CREATED, creation);
575 send_reply(sptr, RPL_MYINFO, cli_name(&me), version);
576 send_supported(sptr);
577 m_lusers(sptr, sptr, 1, parv);
580 /* nextping = CurrentTime; */
581 if (cli_snomask(sptr) & SNO_NOISY)
582 set_snomask(sptr, cli_snomask(sptr) & SNO_NOISY, SNO_ADD);
583 IPcheck_connect_succeeded(sptr);
586 /* if (IsServer(cptr)) */
588 struct Client *acptr;
590 acptr = user->server;
591 if (cli_from(acptr) != cli_from(sptr))
593 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
594 sptr, cli_name(&me), cli_name(user->server), cli_name(cli_from(acptr)),
595 cli_sockhost(cli_from(acptr)));
596 cli_flags(sptr) |= FLAGS_KILLED;
597 return exit_client(cptr, sptr, &me, "NICK server wrong direction");
600 cli_flags(sptr) |= (cli_flags(acptr) & FLAGS_TS8);
603 * Check to see if this user is being propogated
604 * as part of a net.burst, or is using protocol 9.
605 * FIXME: This can be speeded up - its stupid to check it for
606 * every NICK message in a burst again --Run.
608 for (acptr = user->server; acptr != &me; acptr = cli_serv(acptr)->up) {
609 if (IsBurst(acptr) || Protocol(acptr) < 10)
612 if (!IPcheck_remote_connect(sptr, (acptr != &me))) {
614 * We ran out of bits to count this
616 sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from your host -- Ghost)",
617 sptr, cli_name(&me));
618 return exit_client(cptr, sptr, &me,"Too many connections from your host -- throttled");
621 tmpstr = umode_str(sptr);
622 sendcmdto_serv_butone(user->server, CMD_NICK, cptr,
623 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
624 nick, cli_hopcount(sptr) + 1, cli_lastnick(sptr),
625 user->username, user->realhost,
626 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
627 inttobase64(ip_base64, ntohl(cli_ip(sptr).s_addr), 6),
628 NumNick(sptr), cli_info(sptr));
630 /* Send umode to client */
633 send_umode(cptr, sptr, 0, ALL_UMODES);
634 if (cli_snomask(sptr) != SNO_DEFAULT && (cli_flags(sptr) & FLAGS_SERVNOTICE))
635 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
642 static const struct UserMode {
647 { FLAGS_LOCOP, 'O' },
648 { FLAGS_INVISIBLE, 'i' },
649 { FLAGS_WALLOP, 'w' },
650 { FLAGS_SERVNOTICE, 's' },
652 { FLAGS_CHSERV, 'k' },
653 { FLAGS_DEBUG, 'g' },
654 { FLAGS_ACCOUNT, 'r' },
655 { FLAGS_HIDDENHOST, 'x' }
658 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
661 * XXX - find a way to get rid of this
663 static char umodeBuf[BUFSIZE];
665 int set_nick_name(struct Client* cptr, struct Client* sptr,
666 const char* nick, int parc, char* parv[])
668 if (IsServer(sptr)) {
670 const char* account = 0;
674 * A server introducing a new client, change source
676 struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
677 assert(0 != new_client);
679 cli_hopcount(new_client) = atoi(parv[2]);
680 cli_lastnick(new_client) = atoi(parv[3]);
681 if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') {
682 for (p = parv[6] + 1; *p; p++) {
683 for (i = 0; i < USERMODELIST_SIZE; ++i) {
684 if (userModeList[i].c == *p) {
685 cli_flags(new_client) |= userModeList[i].flag;
686 if (userModeList[i].flag & FLAGS_ACCOUNT)
693 client_set_privs(new_client); /* set privs on user */
697 strcpy(cli_name(new_client), nick);
698 cli_user(new_client) = make_user(new_client);
699 cli_user(new_client)->server = sptr;
700 SetRemoteNumNick(new_client, parv[parc - 2]);
702 * IP# of remote client
704 cli_ip(new_client).s_addr = htonl(base64toint(parv[parc - 3]));
706 add_client_to_list(new_client);
707 hAddClient(new_client);
709 cli_serv(sptr)->ghost = 0; /* :server NICK means end of net.burst */
710 ircd_strncpy(cli_username(new_client), parv[4], USERLEN);
711 ircd_strncpy(cli_user(new_client)->host, parv[5], HOSTLEN);
712 ircd_strncpy(cli_user(new_client)->realhost, parv[5], HOSTLEN);
713 ircd_strncpy(cli_info(new_client), parv[parc - 1], REALLEN);
715 ircd_strncpy(cli_user(new_client)->account, account, ACCOUNTLEN);
716 if (HasHiddenHost(new_client))
717 ircd_snprintf(0, cli_user(new_client)->host, HOSTLEN, "%s.%s",
718 account, feature_str(FEAT_HIDDEN_HOST));
720 return register_user(cptr, new_client, cli_name(new_client), parv[4]);
722 else if ((cli_name(sptr))[0]) {
724 * Client changing its nick
726 * If the client belongs to me, then check to see
727 * if client is on any channels where it is currently
728 * banned. If so, do not allow the nick change to occur.
731 const char* channel_name;
732 if ((channel_name = find_no_nickchange_channel(sptr))) {
733 return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
736 * Refuse nick change if the last nick change was less
737 * then 30 seconds ago. This is intended to get rid of
738 * clone bots doing NICK FLOOD. -SeKs
739 * If someone didn't change their nick for more then 60 seconds
740 * however, allow to do two nick changes immediately after another
741 * before limiting the nick flood. -Run
743 if (CurrentTime < cli_nextnick(cptr)) {
744 cli_nextnick(cptr) += 2;
745 send_reply(cptr, ERR_NICKTOOFAST, parv[1],
746 cli_nextnick(cptr) - CurrentTime);
747 /* Send error message */
748 sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cli_name(cptr));
749 /* bounce NICK to user */
750 return 0; /* ignore nick change! */
753 /* Limit total to 1 change per NICK_DELAY seconds: */
754 cli_nextnick(cptr) += NICK_DELAY;
755 /* However allow _maximal_ 1 extra consecutive nick change: */
756 if (cli_nextnick(cptr) < CurrentTime)
757 cli_nextnick(cptr) = CurrentTime;
761 * Also set 'lastnick' to current time, if changed.
763 if (0 != ircd_strcmp(parv[0], nick))
764 cli_lastnick(sptr) = (sptr == cptr) ? TStime() : atoi(parv[2]);
767 * Client just changing his/her nick. If he/she is
768 * on a channel, send note of change to all clients
769 * on that channel. Propagate notice to other servers.
772 sendcmdto_common_channels_butone(sptr, CMD_NICK, NULL, ":%s", nick);
773 add_history(sptr, 1);
774 sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
778 sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
780 if ((cli_name(sptr))[0])
782 strcpy(cli_name(sptr), nick);
786 /* Local client setting NICK the first time */
788 strcpy(cli_name(sptr), nick);
789 if (!cli_user(sptr)) {
790 cli_user(sptr) = make_user(sptr);
791 cli_user(sptr)->server = &me;
793 SetLocalNumNick(sptr);
797 * If the client hasn't gotten a cookie-ping yet,
798 * choose a cookie and send it. -record!jegelhof@cloud9.net
800 if (!cli_cookie(sptr)) {
802 cli_cookie(sptr) = (ircrandom() & 0x7fffffff);
803 } while (!cli_cookie(sptr));
804 sendrawto_one(cptr, MSG_PING " :%u", cli_cookie(sptr));
806 else if (*(cli_user(sptr))->host && cli_cookie(sptr) == COOKIE_VERIFIED) {
808 * USER and PONG already received, now we have NICK.
809 * register_user may reject the client and call exit_client
810 * for it - must test this and exit m_nick too !
812 cli_lastnick(sptr) = TStime(); /* Always local client */
813 if (register_user(cptr, sptr, nick, cli_user(sptr)->username) == CPTR_KILLED)
820 static unsigned char hash_target(unsigned int target)
822 return (unsigned char) (target >> 16) ^ (target >> 8);
828 * sptr must be a local client!
830 * Cannonifies target for client `sptr'.
832 void add_target(struct Client *sptr, void *target)
834 /* Ok, this shouldn't work esp on alpha
836 unsigned char hash = hash_target((unsigned long) target);
837 unsigned char* targets;
840 assert(cli_local(sptr));
842 targets = cli_targets(sptr);
846 for (i = 0; i < MAXTARGETS; ++i) {
847 if (targets[i] == hash)
853 memmove(&targets[RESERVEDTARGETS + 1],
854 &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
855 targets[RESERVEDTARGETS] = hash;
861 * sptr must be a local client !
863 * Returns 'true' (1) when too many targets are addressed.
864 * Returns 'false' (0) when it's ok to send to this target.
866 int check_target_limit(struct Client *sptr, void *target, const char *name,
869 unsigned char hash = hash_target((unsigned long) target);
871 unsigned char* targets;
874 assert(cli_local(sptr));
875 targets = cli_targets(sptr);
878 * Same target as last time?
880 if (targets[0] == hash)
882 for (i = 1; i < MAXTARGETS; ++i) {
883 if (targets[i] == hash) {
884 memmove(&targets[1], &targets[0], i);
893 if (CurrentTime < cli_nexttarget(sptr)) {
894 if (cli_nexttarget(sptr) - CurrentTime < TARGET_DELAY + 8) {
898 cli_nexttarget(sptr) += 2;
899 send_reply(sptr, ERR_TARGETTOOFAST, name,
900 cli_nexttarget(sptr) - CurrentTime);
905 cli_nexttarget(sptr) += TARGET_DELAY;
906 if (cli_nexttarget(sptr) < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
907 cli_nexttarget(sptr) = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
910 memmove(&targets[1], &targets[0], MAXTARGETS - 1);
916 * whisper - called from m_cnotice and m_cprivmsg.
918 * parv[0] = sender prefix
921 * parv[3] = Private message text
923 * Added 971023 by Run.
924 * Reason: Allows channel operators to sent an arbitrary number of private
925 * messages to users on their channel, avoiding the max.targets limit.
926 * Building this into m_private would use too much cpu because we'd have
927 * to a cross channel lookup for every private message!
928 * Note that we can't allow non-chan ops to use this command, it would be
929 * abused by mass advertisers.
932 int whisper(struct Client* source, const char* nick, const char* channel,
933 const char* text, int is_notice)
936 struct Channel* chptr;
937 struct Membership* membership;
941 assert(0 != channel);
942 assert(MyUser(source));
944 if (!(dest = FindUser(nick))) {
945 return send_reply(source, ERR_NOSUCHNICK, nick);
947 if (!(chptr = FindChannel(channel))) {
948 return send_reply(source, ERR_NOSUCHCHANNEL, channel);
951 * compare both users channel lists, instead of the channels user list
952 * since the link is the same, this should be a little faster for channels
953 * with a lot of users
955 for (membership = cli_user(source)->channel; membership; membership = membership->next_channel) {
956 if (chptr == membership->channel)
959 if (0 == membership) {
960 return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
962 if (!IsVoicedOrOpped(membership)) {
963 return send_reply(source, ERR_VOICENEEDED, chptr->chname);
966 * lookup channel in destination
968 assert(0 != cli_user(dest));
969 for (membership = cli_user(dest)->channel; membership; membership = membership->next_channel) {
970 if (chptr == membership->channel)
973 if (0 == membership || IsZombie(membership)) {
974 return send_reply(source, ERR_USERNOTINCHANNEL, cli_name(dest), chptr->chname);
976 if (is_silenced(source, dest))
979 if (cli_user(dest)->away)
980 send_reply(source, RPL_AWAY, cli_name(dest), cli_user(dest)->away);
982 sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
984 sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
990 * added Sat Jul 25 07:30:42 EST 1992
992 void send_umode_out(struct Client *cptr, struct Client *sptr, int old,
996 struct Client *acptr;
998 send_umode(NULL, sptr, old, SEND_UMODES & ~(prop ? 0 : FLAGS_OPER));
1000 for (i = HighestFd; i >= 0; i--) {
1001 if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
1002 (acptr != cptr) && (acptr != sptr) && *umodeBuf)
1003 sendcmdto_one(sptr, CMD_MODE, acptr, "%s :%s", cli_name(sptr), umodeBuf);
1005 if (cptr && MyUser(cptr))
1006 send_umode(cptr, sptr, old, ALL_UMODES);
1011 * send_user_info - send user info userip/userhost
1012 * NOTE: formatter must put info into buffer and return a pointer to the end of
1013 * the data it put in the buffer.
1015 void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
1020 int users_found = 0;
1021 struct Client* acptr;
1028 mb = msgq_make(sptr, rpl_str(rpl), cli_name(&me), cli_name(sptr));
1030 for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
1031 if ((acptr = FindUser(name))) {
1033 msgq_append(0, mb, " ");
1036 if (5 == ++arg_count)
1039 send_buffer(sptr, mb, 0);
1046 * If, after setting the flags, the user has both HiddenHost and Account
1047 * set, its hostmask is changed.
1049 #define FLAGS_HOST_HIDDEN (FLAGS_ACCOUNT|FLAGS_HIDDENHOST)
1050 int hide_hostmask(struct Client *cptr, unsigned int flags)
1052 struct Membership *chan;
1055 if (MyConnect(cptr) && !feature_bool(FEAT_HOST_HIDING))
1056 flags &= ~FLAGS_HIDDENHOST;
1058 newflags = cli_flags(cptr) | flags;
1059 if ((newflags & FLAGS_HOST_HIDDEN) != FLAGS_HOST_HIDDEN) {
1060 /* The user doesn't have both flags, don't change the hostmask */
1061 cli_flags(cptr) |= flags;
1065 sendcmdto_common_channels_butone(cptr, CMD_QUIT, cptr, ":Registered");
1066 ircd_snprintf(0, cli_user(cptr)->host, HOSTLEN, "%s.%s",
1067 cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST));
1068 cli_flags(cptr) |= flags;
1071 * Go through all channels the client was on, rejoin him
1072 * and set the modes, if any
1074 for (chan = cli_user(cptr)->channel; chan; chan = chan->next_channel) {
1075 sendcmdto_channel_butserv_butone(cptr, CMD_JOIN, chan->channel, cptr,
1076 "%H", chan->channel);
1077 if (IsChanOp(chan) && HasVoice(chan)) {
1078 sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr,
1079 "%H +ov %C %C", chan->channel, cptr, cptr);
1080 } else if (IsChanOp(chan) || HasVoice(chan)) {
1081 sendcmdto_channel_butserv_butone(&me, CMD_MODE, chan->channel, cptr,
1082 "%H +%c %C", chan->channel, IsChanOp(chan) ? 'o' : 'v', cptr);
1090 * set_user_mode() added 15/10/91 By Darren Reed.
1093 * parv[1] - username to change mode for
1094 * parv[2] - modes to change
1096 int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
1100 struct Client *acptr;
1104 unsigned int tmpmask = 0;
1105 int snomask_given = 0;
1108 int do_host_hiding = 0;
1113 return need_more_params(sptr, "MODE");
1115 if (!(acptr = FindUser(parv[1])))
1117 if (MyConnect(sptr))
1118 send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
1122 if (IsServer(sptr) || sptr != acptr)
1125 sendwallto_group_butone(&me, WALL_WALLOPS, 0,
1126 "MODE for User %s from %s!%s", parv[1],
1127 cli_name(cptr), cli_name(sptr));
1129 send_reply(sptr, ERR_USERSDONTMATCH);
1137 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1138 if ((userModeList[i].flag & cli_flags(sptr)) &&
1139 !(userModeList[i].flag & FLAGS_ACCOUNT))
1140 *m++ = userModeList[i].c;
1143 send_reply(sptr, RPL_UMODEIS, buf);
1144 if ((cli_flags(sptr) & FLAGS_SERVNOTICE) && MyConnect(sptr)
1145 && cli_snomask(sptr) !=
1146 (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
1147 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1152 * find flags already set for user
1153 * why not just copy them?
1155 setflags = cli_flags(sptr);
1157 if (MyConnect(sptr))
1158 tmpmask = cli_snomask(sptr);
1161 * parse mode change string(s)
1163 for (p = &parv[2]; *p; p++) { /* p is changed in loop too */
1164 for (m = *p; *m; m++) {
1173 if (*(p + 1) && is_snomask(*(p + 1))) {
1175 tmpmask = umode_make_snomask(tmpmask, *++p, what);
1176 tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
1179 tmpmask = (what == MODE_ADD) ?
1180 (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
1182 SetServNotice(sptr);
1184 ClearServNotice(sptr);
1187 if (what == MODE_ADD)
1193 if (what == MODE_ADD)
1196 cli_flags(sptr) &= ~(FLAGS_OPER | FLAGS_LOCOP);
1197 if (MyConnect(sptr)) {
1198 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1199 cli_handler(sptr) = CLIENT_HANDLER;
1204 if (what == MODE_ADD)
1207 cli_flags(sptr) &= ~(FLAGS_OPER | FLAGS_LOCOP);
1208 if (MyConnect(sptr)) {
1209 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1210 cli_handler(sptr) = CLIENT_HANDLER;
1215 if (what == MODE_ADD)
1218 ClearInvisible(sptr);
1221 if (what == MODE_ADD)
1227 if (what == MODE_ADD)
1228 SetChannelService(sptr);
1230 ClearChannelService(sptr);
1233 if (what == MODE_ADD)
1239 if (what == MODE_ADD)
1248 * Evaluate rules for new user mode
1249 * Stop users making themselves operators too easily:
1251 if (!IsServer(cptr)) {
1252 if (!(setflags & FLAGS_OPER) && IsOper(sptr))
1254 if (!(setflags & FLAGS_LOCOP) && IsLocOp(sptr))
1257 * new umode; servers can set it, local users cannot;
1258 * prevents users from /kick'ing or /mode -o'ing
1260 if (!(setflags & FLAGS_CHSERV))
1261 ClearChannelService(sptr);
1263 * only send wallops to opers
1265 if (feature_bool(FEAT_WALLOPS_OPER_ONLY) && !IsAnOper(sptr) &&
1266 !(setflags & FLAGS_WALLOP))
1268 #ifdef SERVNOTICE_OPER_ONLY
1269 if (MyConnect(sptr) && !IsAnOper(sptr) && !(setflags & FLAGS_SERVNOTICE)) {
1270 ClearServNotice(sptr);
1271 set_snomask(sptr, 0, SNO_SET);
1274 #ifdef DEBUG_OPER_ONLY
1275 if (!IsAnOper(sptr) && !(setflags & FLAGS_DEBUG))
1279 if (MyConnect(sptr)) {
1280 if ((setflags & (FLAGS_OPER | FLAGS_LOCOP)) && !IsAnOper(sptr))
1281 det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPS);
1283 if (SendServNotice(sptr)) {
1284 if (tmpmask != cli_snomask(sptr))
1285 set_snomask(sptr, tmpmask, SNO_SET);
1286 if (cli_snomask(sptr) && snomask_given)
1287 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1289 set_snomask(sptr, 0, SNO_SET);
1292 * Compare new flags with old flags and send string which
1293 * will cause servers to update correctly.
1295 if (!(setflags & FLAGS_OPER) && IsOper(sptr)) { /* user now oper */
1297 client_set_privs(sptr); /* may set propagate privilege */
1299 if (HasPriv(sptr, PRIV_PROPAGATE)) /* remember propagate privilege setting */
1301 if ((setflags & FLAGS_OPER) && !IsOper(sptr)) { /* user no longer oper */
1303 client_set_privs(sptr); /* will clear propagate privilege */
1305 if ((setflags & FLAGS_INVISIBLE) && !IsInvisible(sptr))
1306 --UserStats.inv_clients;
1307 if (!(setflags & FLAGS_INVISIBLE) && IsInvisible(sptr))
1308 ++UserStats.inv_clients;
1309 if (!(setflags & FLAGS_HIDDENHOST) && do_host_hiding)
1310 hide_hostmask(sptr, FLAGS_HIDDENHOST);
1311 send_umode_out(cptr, sptr, setflags, prop);
1317 * Build umode string for BURST command
1320 char *umode_str(struct Client *cptr)
1322 char* m = umodeBuf; /* Maximum string size: "owidg\0" */
1326 c_flags = cli_flags(cptr) & SEND_UMODES; /* cleaning up the original code */
1327 if (HasPriv(cptr, PRIV_PROPAGATE))
1328 c_flags |= FLAGS_OPER;
1330 c_flags &= ~FLAGS_OPER;
1332 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1333 if ( (c_flags & userModeList[i].flag))
1334 *m++ = userModeList[i].c;
1337 if (IsAccount(cptr)) {
1338 char* t = cli_user(cptr)->account;
1341 while ((*m++ = *t++))
1347 return umodeBuf; /* Note: static buffer, gets
1348 overwritten by send_umode() */
1352 * Send the MODE string for user (user) to connection cptr
1355 void send_umode(struct Client *cptr, struct Client *sptr, int old, int sendmask)
1360 int what = MODE_NULL;
1363 * Build a string in umodeBuf to represent the change in the user's
1364 * mode between the new (sptr->flag) and 'old'.
1368 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1369 flag = userModeList[i].flag;
1370 if (MyUser(sptr) && !(flag & sendmask))
1372 if ( (flag & old) && !(cli_flags(sptr) & flag))
1374 if (what == MODE_DEL)
1375 *m++ = userModeList[i].c;
1380 *m++ = userModeList[i].c;
1383 else if (!(flag & old) && (cli_flags(sptr) & flag))
1385 if (what == MODE_ADD)
1386 *m++ = userModeList[i].c;
1391 *m++ = userModeList[i].c;
1396 if (*umodeBuf && cptr)
1397 sendcmdto_one(sptr, CMD_MODE, cptr, "%s :%s", cli_name(sptr), umodeBuf);
1401 * Check to see if this resembles a sno_mask. It is if 1) there is
1402 * at least one digit and 2) The first digit occurs before the first
1403 * alphabetic character.
1405 int is_snomask(char *word)
1409 for (; *word; word++)
1412 else if (IsAlpha(*word))
1419 * If it begins with a +, count this as an additive mask instead of just
1420 * a replacement. If what == MODE_DEL, "+" has no special effect.
1422 unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
1424 unsigned int sno_what;
1425 unsigned int newmask;
1429 if (what == MODE_ADD)
1434 else if (*arg == '-')
1437 if (what == MODE_ADD)
1443 sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
1444 /* pity we don't have strtoul everywhere */
1445 newmask = (unsigned int)atoi(arg);
1446 if (sno_what == SNO_DEL)
1447 newmask = oldmask & ~newmask;
1448 else if (sno_what == SNO_ADD)
1453 static void delfrom_list(struct Client *cptr, struct SLink **list)
1456 struct SLink* prv = NULL;
1458 for (tmp = *list; tmp; tmp = tmp->next) {
1459 if (tmp->value.cptr == cptr) {
1461 prv->next = tmp->next;
1472 * This function sets a Client's server notices mask, according to
1473 * the parameter 'what'. This could be even faster, but the code
1474 * gets mighty hard to read :)
1476 void set_snomask(struct Client *cptr, unsigned int newmask, int what)
1478 unsigned int oldmask, diffmask; /* unsigned please */
1482 oldmask = cli_snomask(cptr);
1484 if (what == SNO_ADD)
1486 else if (what == SNO_DEL)
1487 newmask = oldmask & ~newmask;
1488 else if (what != SNO_SET) /* absolute set, no math needed */
1489 sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
1491 newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
1493 diffmask = oldmask ^ newmask;
1495 for (i = 0; diffmask >> i; i++) {
1496 if (((diffmask >> i) & 1))
1498 if (((newmask >> i) & 1))
1501 tmp->next = opsarray[i];
1502 tmp->value.cptr = cptr;
1506 /* not real portable :( */
1507 delfrom_list(cptr, &opsarray[i]);
1510 cli_snomask(cptr) = newmask;
1514 * is_silenced : Does the actual check wether sptr is allowed
1515 * to send a message to acptr.
1516 * Both must be registered persons.
1517 * If sptr is silenced by acptr, his message should not be propagated,
1518 * but more over, if this is detected on a server not local to sptr
1519 * the SILENCE mask is sent upstream.
1521 int is_silenced(struct Client *sptr, struct Client *acptr)
1525 static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
1526 static char senderip[16 + NICKLEN + USERLEN + 5];
1527 static char senderh[HOSTLEN + ACCOUNTLEN + USERLEN + 6];
1529 if (!cli_user(acptr) || !(lp = cli_user(acptr)->silence) || !(user = cli_user(sptr)))
1531 ircd_snprintf(0, sender, sizeof(sender), "%s!%s@%s", cli_name(sptr),
1532 user->username, user->host);
1533 ircd_snprintf(0, senderip, sizeof(senderip), "%s!%s@%s", cli_name(sptr),
1534 user->username, ircd_ntoa((const char*) &(cli_ip(sptr))));
1535 if (HasHiddenHost(sptr))
1536 ircd_snprintf(0, senderh, sizeof(senderh), "%s!%s@%s", cli_name(sptr),
1537 user->username, user->realhost);
1538 for (; lp; lp = lp->next)
1540 if ((!(lp->flags & CHFL_SILENCE_IPMASK) && (!match(lp->value.cp, sender) ||
1541 (HasHiddenHost(sptr) && !match(lp->value.cp, senderh)))) ||
1542 ((lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, senderip)))
1544 if (!MyConnect(sptr))
1546 sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr,
1558 * Removes all silence masks from the list of sptr that fall within `mask'
1559 * Returns -1 if none where found, 0 otherwise.
1561 int del_silence(struct Client *sptr, char *mask)
1567 for (lp = &(cli_user(sptr))->silence; *lp;) {
1568 if (!mmatch(mask, (*lp)->value.cp))
1572 MyFree(tmp->value.cp);
1582 int add_silence(struct Client* sptr, const char* mask)
1584 struct SLink *lp, **lpp;
1585 int cnt = 0, len = strlen(mask);
1588 for (lpp = &(cli_user(sptr))->silence, lp = *lpp; lp;)
1590 if (0 == ircd_strcmp(mask, lp->value.cp))
1592 if (!mmatch(mask, lp->value.cp))
1594 struct SLink *tmp = lp;
1595 *lpp = lp = lp->next;
1596 MyFree(tmp->value.cp);
1602 len += strlen(lp->value.cp);
1603 if ((len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXSILES))) ||
1604 (++cnt >= feature_int(FEAT_MAXSILES)))
1606 send_reply(sptr, ERR_SILELISTFULL, mask);
1609 else if (!mmatch(lp->value.cp, mask))
1616 memset(lp, 0, sizeof(struct SLink));
1617 lp->next = cli_user(sptr)->silence;
1618 lp->value.cp = (char*) MyMalloc(strlen(mask) + 1);
1619 assert(0 != lp->value.cp);
1620 strcpy(lp->value.cp, mask);
1621 if ((ip_start = strrchr(mask, '@')) && check_if_ipmask(ip_start + 1))
1622 lp->flags = CHFL_SILENCE_IPMASK;
1623 cli_user(sptr)->silence = lp;
1628 send_supported(struct Client *cptr)
1630 char featurebuf[512];
1632 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES1, FEATURESVALUES1);
1633 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1634 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES2, FEATURESVALUES2);
1635 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1637 return 0; /* convenience return, if it's ever needed */