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 if (MustBeOper && !IsPrivileged(from))
196 send_reply(from, ERR_NOPRIVILEGES);
197 return HUNTED_NOSUCH;
199 /* Assume it's me, if no server or an unregistered client */
200 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
201 return (HUNTED_ISME);
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 return HUNTED_NOSUCH;
211 acptr = cli_user(acptr)->server;
212 } else if (!(acptr = find_match_server(to))) {
213 send_reply(from, ERR_NOSUCHSERVER, to);
214 return (HUNTED_NOSUCH);
216 } else if (!(acptr = FindNServer(to)))
217 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
220 return (HUNTED_ISME);
222 if (MustBeOper && !IsPrivileged(from)) {
223 send_reply(from, ERR_NOPRIVILEGES);
224 return HUNTED_NOSUCH;
227 assert(!IsServer(from));
229 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
231 sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
232 parv[4], parv[5], parv[6], parv[7], parv[8]);
234 return (HUNTED_PASS);
237 int hunt_server_prio_cmd(struct Client *from, const char *cmd, const char *tok,
238 struct Client *one, int MustBeOper,
239 const char *pattern, int server, int parc,
242 struct Client *acptr;
245 /* Assume it's me, if no server or an unregistered client */
246 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
247 return (HUNTED_ISME);
249 /* Make sure it's a server */
251 /* Make sure it's a server */
252 if (!strchr(to, '*')) {
253 if (0 == (acptr = FindClient(to)))
254 return HUNTED_NOSUCH;
257 acptr = cli_user(acptr)->server;
258 } else if (!(acptr = find_match_server(to))) {
259 send_reply(from, ERR_NOSUCHSERVER, to);
260 return (HUNTED_NOSUCH);
262 } else if (!(acptr = FindNServer(to)))
263 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
266 return (HUNTED_ISME);
268 if (MustBeOper && !IsPrivileged(from)) {
269 send_reply(from, ERR_NOPRIVILEGES);
270 return HUNTED_NOSUCH;
273 assert(!IsServer(from));
275 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
277 sendcmdto_prio_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
278 parv[4], parv[5], parv[6], parv[7], parv[8]);
280 return (HUNTED_PASS);
284 * 'do_nick_name' ensures that the given parameter (nick) is really a proper
285 * string for a nickname (note, the 'nick' may be modified in the process...)
287 * RETURNS the length of the final NICKNAME (0, if nickname is invalid)
289 * Nickname characters are in range 'A'..'}', '_', '-', '0'..'9'
290 * anything outside the above set will terminate nickname.
291 * In addition, the first character cannot be '-' or a Digit.
294 * The '~'-character should be allowed, but a change should be global,
295 * some confusion would result if only few servers allowed it...
297 int do_nick_name(char* nick)
300 char* end = ch + NICKLEN;
303 if (*ch == '-' || IsDigit(*ch)) /* first character in [0..9-] */
306 for ( ; (ch < end) && *ch; ++ch)
307 if (!IsNickChar(*ch))
318 * Copy `source' to `dest', replacing all occurances of '~' and characters that
319 * are not `isIrcUi' by an underscore.
320 * Copies at most USERLEN - 1 characters or up till the first control character.
321 * If `tilde' is true, then a tilde is prepended to `dest'.
322 * Note that `dest' and `source' can point to the same area or to different
323 * non-overlapping areas.
325 static char *clean_user_id(char *dest, char *source, int tilde)
332 ch = *s++; /* Store first character to copy: */
335 *d++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
338 while (ch && !IsCntrl(ch) && rlen--)
340 char nch = *s++; /* Store next character to copy */
341 *d++ = IsUserChar(ch) ? ch : '_'; /* This possibly overwrites it */
354 * This function is called when both NICK and USER messages
355 * have been accepted for the client, in whatever order. Only
356 * after this the USER message is propagated.
358 * NICK's must be propagated at once when received, although
359 * it would be better to delay them too until full info is
360 * available. Doing it is not so simple though, would have
361 * to implement the following:
363 * 1) user telnets in and gives only "NICK foobar" and waits
364 * 2) another user far away logs in normally with the nick
365 * "foobar" (quite legal, as this server didn't propagate it).
366 * 3) now this server gets nick "foobar" from outside, but
367 * has already the same defined locally. Current server
368 * would just issue "KILL foobar" to clean out dups. But,
369 * this is not fair. It should actually request another
370 * nick from local user or kill him/her...
372 int register_user(struct Client *cptr, struct Client *sptr,
373 const char *nick, char *username)
375 struct ConfItem* aconf;
379 char c = 0; /* not alphanum */
380 char d = 'a'; /* not a digit */
388 short digitgroups = 0;
389 struct User* user = cli_user(sptr);
392 user->last = CurrentTime;
393 parv[0] = cli_name(sptr);
394 parv[1] = parv[2] = NULL;
398 static time_t last_too_many1;
399 static time_t last_too_many2;
401 assert(cptr == sptr);
402 switch (conf_check_client(sptr))
406 case ACR_NO_AUTHORIZATION:
407 sendto_opmask_butone(0, SNO_UNAUTH, "Unauthorized connection from %s.",
408 get_client_name(sptr, HIDE_IP));
409 ++ServerStats->is_ref;
410 return exit_client(cptr, sptr, &me,
411 "No Authorization - use another server");
412 case ACR_TOO_MANY_IN_CLASS:
413 if (CurrentTime - last_too_many1 >= (time_t) 60)
415 last_too_many1 = CurrentTime;
416 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections in "
417 "class %i for %s.", get_client_class(sptr),
418 get_client_name(sptr, SHOW_IP));
420 ++ServerStats->is_ref;
421 IPcheck_connect_fail(cli_ip(sptr));
422 return exit_client(cptr, sptr, &me,
423 "Sorry, your connection class is full - try "
424 "again later or try another server");
425 case ACR_TOO_MANY_FROM_IP:
426 if (CurrentTime - last_too_many2 >= (time_t) 60)
428 last_too_many2 = CurrentTime;
429 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections from "
431 get_client_name(sptr, SHOW_IP));
433 ++ServerStats->is_ref;
434 return exit_client(cptr, sptr, &me,
435 "Too many connections from your host");
436 case ACR_ALREADY_AUTHORIZED:
437 /* Can this ever happen? */
439 ++ServerStats->is_ref;
440 IPcheck_connect_fail(cli_ip(sptr));
441 return exit_client(cptr, sptr, &me, "Unknown error -- Try again");
443 ircd_strncpy(user->host, cli_sockhost(sptr), HOSTLEN);
444 aconf = cli_confs(sptr)->value.aconf;
446 clean_user_id(user->username,
447 (cli_flags(sptr) & FLAGS_GOTID) ? cli_username(sptr) : username,
448 (cli_flags(sptr) & FLAGS_DOID) && !(cli_flags(sptr) & FLAGS_GOTID));
450 if ((user->username[0] == '\0')
451 || ((user->username[0] == '~') && (user->username[1] == '\000')))
452 return exit_client(cptr, sptr, &me, "USER: Bogus userid.");
454 if (!EmptyString(aconf->passwd)
455 && !(IsDigit(*aconf->passwd) && !aconf->passwd[1])
456 && strcmp(cli_passwd(sptr), aconf->passwd))
458 ServerStats->is_ref++;
459 IPcheck_connect_fail(cli_ip(sptr));
460 send_reply(sptr, ERR_PASSWDMISMATCH);
461 return exit_client(cptr, sptr, &me, "Bad Password");
463 memset(cli_passwd(sptr), 0, sizeof(cli_passwd(sptr)));
465 * following block for the benefit of time-dependent K:-lines
467 if (find_kill(sptr)) {
468 ServerStats->is_ref++;
469 IPcheck_connect_fail(cli_ip(sptr));
470 return exit_client(cptr, sptr, &me, "K-lined");
473 * Check for mixed case usernames, meaning probably hacked. Jon2 3-94
474 * Summary of rules now implemented in this patch: Ensor 11-94
475 * In a mixed-case name, if first char is upper, one more upper may
476 * appear anywhere. (A mixed-case name *must* have an upper first
477 * char, and may have one other upper.)
478 * A third upper may appear if all 3 appear at the beginning of the
479 * name, separated only by "others" (-/_/.).
480 * A single group of digits is allowed anywhere.
481 * Two groups of digits are allowed if at least one of the groups is
482 * at the beginning or the end.
483 * Only one '-', '_', or '.' is allowed (or two, if not consecutive).
484 * But not as the first or last char.
485 * No other special characters are allowed.
486 * Name must contain at least one letter.
488 tmpstr2 = tmpstr = (username[0] == '~' ? &username[1] : username);
489 while (*tmpstr && !badid)
501 if ((leadcaps || pos == 1) && !lower && !digits)
507 if (pos == 1 || !IsDigit(d))
514 else if (c == '-' || c == '_' || c == '.')
519 else if (d == '-' || d == '_' || d == '.' || other > 2)
528 if (lower && upper && (!leadcaps || leadcaps > 3 ||
529 (upper > 2 && upper > leadcaps)))
531 else if (digitgroups == 2 && !(IsDigit(tmpstr2[0]) || IsDigit(c)))
533 else if ((!lower && !upper) || !IsAlnum(c))
536 if (badid && (!(cli_flags(sptr) & FLAGS_GOTID) ||
537 strcmp(cli_username(sptr), username) != 0))
539 ServerStats->is_ref++;
541 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
542 ":Your username is invalid.");
543 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
544 ":Connect with your real username, in lowercase.");
545 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
546 ":If your mail address were foo@bar.com, your username "
548 return exit_client(cptr, sptr, &me, "USER: Bad username");
550 Count_unknownbecomesclient(sptr, UserStats);
553 ircd_strncpy(user->username, username, USERLEN);
554 Count_newremoteclient(UserStats, user->server);
558 if (IsInvisible(sptr))
559 ++UserStats.inv_clients;
563 if (MyConnect(sptr)) {
564 cli_handler(sptr) = CLIENT_HANDLER;
565 release_dns_reply(sptr);
567 send_reply(sptr, RPL_WELCOME, nick);
569 * This is a duplicate of the NOTICE but see below...
571 send_reply(sptr, RPL_YOURHOST, cli_name(&me), version);
572 send_reply(sptr, RPL_CREATED, creation);
573 send_reply(sptr, RPL_MYINFO, cli_name(&me), version);
574 send_supported(sptr);
575 m_lusers(sptr, sptr, 1, parv);
578 /* nextping = CurrentTime; */
579 if (cli_snomask(sptr) & SNO_NOISY)
580 set_snomask(sptr, cli_snomask(sptr) & SNO_NOISY, SNO_ADD);
581 IPcheck_connect_succeeded(sptr);
584 /* if (IsServer(cptr)) */
586 struct Client *acptr;
588 acptr = user->server;
589 if (cli_from(acptr) != cli_from(sptr))
591 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
592 sptr, cli_name(&me), cli_name(user->server), cli_name(cli_from(acptr)),
593 cli_sockhost(cli_from(acptr)));
594 cli_flags(sptr) |= FLAGS_KILLED;
595 return exit_client(cptr, sptr, &me, "NICK server wrong direction");
598 cli_flags(sptr) |= (cli_flags(acptr) & FLAGS_TS8);
601 * Check to see if this user is being propogated
602 * as part of a net.burst, or is using protocol 9.
603 * FIXME: This can be speeded up - its stupid to check it for
604 * every NICK message in a burst again --Run.
606 for (acptr = user->server; acptr != &me; acptr = cli_serv(acptr)->up) {
607 if (IsBurst(acptr) || Protocol(acptr) < 10)
610 if (!IPcheck_remote_connect(sptr, (acptr != &me))) {
612 * We ran out of bits to count this
614 sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from your host -- Ghost)",
615 sptr, cli_name(&me));
616 return exit_client(cptr, sptr, &me,"Too many connections from your host -- throttled");
619 tmpstr = umode_str(sptr);
620 sendcmdto_serv_butone(user->server, CMD_NICK, cptr,
621 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
622 nick, cli_hopcount(sptr) + 1, cli_lastnick(sptr),
623 user->username, user->host,
624 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
625 inttobase64(ip_base64, ntohl(cli_ip(sptr).s_addr), 6),
626 NumNick(sptr), cli_info(sptr));
628 /* Send umode to client */
631 send_umode(cptr, sptr, 0, ALL_UMODES);
632 if (cli_snomask(sptr) != SNO_DEFAULT && (cli_flags(sptr) & FLAGS_SERVNOTICE))
633 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
640 static const struct UserMode {
645 { FLAGS_LOCOP, 'O' },
646 { FLAGS_INVISIBLE, 'i' },
647 { FLAGS_WALLOP, 'w' },
648 { FLAGS_SERVNOTICE, 's' },
650 { FLAGS_CHSERV, 'k' },
654 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
657 * XXX - find a way to get rid of this
659 static char umodeBuf[BUFSIZE];
661 int set_nick_name(struct Client* cptr, struct Client* sptr,
662 const char* nick, int parc, char* parv[])
664 if (IsServer(sptr)) {
669 * A server introducing a new client, change source
671 struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
672 assert(0 != new_client);
674 cli_hopcount(new_client) = atoi(parv[2]);
675 cli_lastnick(new_client) = atoi(parv[3]);
676 if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') {
677 for (p = parv[6] + 1; *p; p++) {
678 for (i = 0; i < USERMODELIST_SIZE; ++i) {
679 if (userModeList[i].c == *p) {
680 cli_flags(new_client) |= userModeList[i].flag;
686 client_set_privs(new_client); /* set privs on user */
690 strcpy(cli_name(new_client), nick);
691 cli_user(new_client) = make_user(new_client);
692 cli_user(new_client)->server = sptr;
693 SetRemoteNumNick(new_client, parv[parc - 2]);
695 * IP# of remote client
697 cli_ip(new_client).s_addr = htonl(base64toint(parv[parc - 3]));
699 add_client_to_list(new_client);
700 hAddClient(new_client);
702 cli_serv(sptr)->ghost = 0; /* :server NICK means end of net.burst */
703 ircd_strncpy(cli_username(new_client), parv[4], USERLEN);
704 ircd_strncpy(cli_user(new_client)->host, parv[5], HOSTLEN);
705 ircd_strncpy(cli_info(new_client), parv[parc - 1], REALLEN);
707 return register_user(cptr, new_client, cli_name(new_client), parv[4]);
709 else if ((cli_name(sptr))[0]) {
711 * Client changing its nick
713 * If the client belongs to me, then check to see
714 * if client is on any channels where it is currently
715 * banned. If so, do not allow the nick change to occur.
718 const char* channel_name;
719 if ((channel_name = find_no_nickchange_channel(sptr))) {
720 return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
723 * Refuse nick change if the last nick change was less
724 * then 30 seconds ago. This is intended to get rid of
725 * clone bots doing NICK FLOOD. -SeKs
726 * If someone didn't change their nick for more then 60 seconds
727 * however, allow to do two nick changes immedately after another
728 * before limiting the nick flood. -Run
730 if (CurrentTime < cli_nextnick(cptr)) {
731 cli_nextnick(cptr) += 2;
732 send_reply(cptr, ERR_NICKTOOFAST, parv[1],
733 cli_nextnick(cptr) - CurrentTime);
734 /* Send error message */
735 sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cli_name(cptr));
736 /* bounce NICK to user */
737 return 0; /* ignore nick change! */
740 /* Limit total to 1 change per NICK_DELAY seconds: */
741 cli_nextnick(cptr) += NICK_DELAY;
742 /* However allow _maximal_ 1 extra consecutive nick change: */
743 if (cli_nextnick(cptr) < CurrentTime)
744 cli_nextnick(cptr) = CurrentTime;
748 * Also set 'lastnick' to current time, if changed.
750 if (0 != ircd_strcmp(parv[0], nick))
751 cli_lastnick(sptr) = (sptr == cptr) ? TStime() : atoi(parv[2]);
754 * Client just changing his/her nick. If he/she is
755 * on a channel, send note of change to all clients
756 * on that channel. Propagate notice to other servers.
759 sendcmdto_common_channels(sptr, CMD_NICK, ":%s", nick);
760 add_history(sptr, 1);
761 sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
765 sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
767 if ((cli_name(sptr))[0])
769 strcpy(cli_name(sptr), nick);
773 /* Local client setting NICK the first time */
775 strcpy(cli_name(sptr), nick);
776 if (!cli_user(sptr)) {
777 cli_user(sptr) = make_user(sptr);
778 cli_user(sptr)->server = &me;
780 SetLocalNumNick(sptr);
784 * If the client hasn't gotten a cookie-ping yet,
785 * choose a cookie and send it. -record!jegelhof@cloud9.net
787 if (!cli_cookie(sptr)) {
789 cli_cookie(sptr) = (ircrandom() & 0x7fffffff);
790 } while (!cli_cookie(sptr));
791 sendrawto_one(cptr, MSG_PING " :%u", cli_cookie(sptr));
793 else if (*(cli_user(sptr))->host && cli_cookie(sptr) == COOKIE_VERIFIED) {
795 * USER and PONG already received, now we have NICK.
796 * register_user may reject the client and call exit_client
797 * for it - must test this and exit m_nick too !
799 cli_lastnick(sptr) = TStime(); /* Always local client */
800 if (register_user(cptr, sptr, nick, cli_user(sptr)->username) == CPTR_KILLED)
807 static unsigned char hash_target(unsigned int target)
809 return (unsigned char) (target >> 16) ^ (target >> 8);
815 * sptr must be a local client!
817 * Cannonifies target for client `sptr'.
819 void add_target(struct Client *sptr, void *target)
821 /* Ok, this shouldn't work esp on alpha
823 unsigned char hash = hash_target((unsigned long) target);
824 unsigned char* targets;
827 assert(cli_local(sptr));
829 targets = cli_targets(sptr);
833 for (i = 0; i < MAXTARGETS; ++i) {
834 if (targets[i] == hash)
840 memmove(&targets[RESERVEDTARGETS + 1],
841 &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
842 targets[RESERVEDTARGETS] = hash;
848 * sptr must be a local client !
850 * Returns 'true' (1) when too many targets are addressed.
851 * Returns 'false' (0) when it's ok to send to this target.
853 int check_target_limit(struct Client *sptr, void *target, const char *name,
856 unsigned char hash = hash_target((unsigned long) target);
858 unsigned char* targets;
861 assert(cli_local(sptr));
862 targets = cli_targets(sptr);
865 * Same target as last time?
867 if (targets[0] == hash)
869 for (i = 1; i < MAXTARGETS; ++i) {
870 if (targets[i] == hash) {
871 memmove(&targets[1], &targets[0], i);
880 if (CurrentTime < cli_nexttarget(sptr)) {
881 if (cli_nexttarget(sptr) - CurrentTime < TARGET_DELAY + 8) {
885 cli_nexttarget(sptr) += 2;
886 send_reply(sptr, ERR_TARGETTOOFAST, name,
887 cli_nexttarget(sptr) - CurrentTime);
892 cli_nexttarget(sptr) += TARGET_DELAY;
893 if (cli_nexttarget(sptr) < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
894 cli_nexttarget(sptr) = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
897 memmove(&targets[1], &targets[0], MAXTARGETS - 1);
903 * whisper - called from m_cnotice and m_cprivmsg.
905 * parv[0] = sender prefix
908 * parv[3] = Private message text
910 * Added 971023 by Run.
911 * Reason: Allows channel operators to sent an arbitrary number of private
912 * messages to users on their channel, avoiding the max.targets limit.
913 * Building this into m_private would use too much cpu because we'd have
914 * to a cross channel lookup for every private message!
915 * Note that we can't allow non-chan ops to use this command, it would be
916 * abused by mass advertisers.
919 int whisper(struct Client* source, const char* nick, const char* channel,
920 const char* text, int is_notice)
923 struct Channel* chptr;
924 struct Membership* membership;
928 assert(0 != channel);
929 assert(MyUser(source));
931 if (!(dest = FindUser(nick))) {
932 return send_reply(source, ERR_NOSUCHNICK, nick);
934 if (!(chptr = FindChannel(channel))) {
935 return send_reply(source, ERR_NOSUCHCHANNEL, channel);
938 * compare both users channel lists, instead of the channels user list
939 * since the link is the same, this should be a little faster for channels
940 * with a lot of users
942 for (membership = cli_user(source)->channel; membership; membership = membership->next_channel) {
943 if (chptr == membership->channel)
946 if (0 == membership) {
947 return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
949 if (!IsVoicedOrOpped(membership)) {
950 return send_reply(source, ERR_VOICENEEDED, chptr->chname);
953 * lookup channel in destination
955 assert(0 != cli_user(dest));
956 for (membership = cli_user(dest)->channel; membership; membership = membership->next_channel) {
957 if (chptr == membership->channel)
960 if (0 == membership || IsZombie(membership)) {
961 return send_reply(source, ERR_USERNOTINCHANNEL, cli_name(dest), chptr->chname);
963 if (is_silenced(source, dest))
966 if (cli_user(dest)->away)
967 send_reply(source, RPL_AWAY, cli_name(dest), cli_user(dest)->away);
969 sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
971 sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
977 * added Sat Jul 25 07:30:42 EST 1992
979 void send_umode_out(struct Client *cptr, struct Client *sptr, int old,
983 struct Client *acptr;
985 send_umode(NULL, sptr, old, SEND_UMODES & ~(prop ? 0 : FLAGS_OPER));
987 for (i = HighestFd; i >= 0; i--) {
988 if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
989 (acptr != cptr) && (acptr != sptr) && *umodeBuf)
990 sendcmdto_one(sptr, CMD_MODE, acptr, "%s :%s", cli_name(sptr), umodeBuf);
992 if (cptr && MyUser(cptr))
993 send_umode(cptr, sptr, old, ALL_UMODES);
998 * send_user_info - send user info userip/userhost
999 * NOTE: formatter must put info into buffer and return a pointer to the end of
1000 * the data it put in the buffer.
1002 void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
1007 int users_found = 0;
1008 struct Client* acptr;
1015 mb = msgq_make(sptr, rpl_str(rpl), cli_name(&me), cli_name(sptr));
1017 for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
1018 if ((acptr = FindUser(name))) {
1020 msgq_append(0, mb, " ");
1023 if (5 == ++arg_count)
1026 send_buffer(sptr, mb, 0);
1032 * set_user_mode() added 15/10/91 By Darren Reed.
1035 * parv[1] - username to change mode for
1036 * parv[2] - modes to change
1038 int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
1042 struct Client *acptr;
1046 unsigned int tmpmask = 0;
1047 int snomask_given = 0;
1054 return need_more_params(sptr, "MODE");
1056 if (!(acptr = FindUser(parv[1])))
1058 if (MyConnect(sptr))
1059 send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
1063 if (IsServer(sptr) || sptr != acptr)
1066 sendwallto_group_butone(&me, WALL_WALLOPS, 0,
1067 "MODE for User %s from %s!%s", parv[1],
1068 cli_name(cptr), cli_name(sptr));
1070 send_reply(sptr, ERR_USERSDONTMATCH);
1078 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1079 if ( (userModeList[i].flag & cli_flags(sptr)))
1080 *m++ = userModeList[i].c;
1083 send_reply(sptr, RPL_UMODEIS, buf);
1084 if ((cli_flags(sptr) & FLAGS_SERVNOTICE) && MyConnect(sptr)
1085 && cli_snomask(sptr) !=
1086 (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
1087 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1092 * find flags already set for user
1093 * why not just copy them?
1095 setflags = cli_flags(sptr);
1097 if (MyConnect(sptr))
1098 tmpmask = cli_snomask(sptr);
1101 * parse mode change string(s)
1103 for (p = &parv[2]; *p; p++) { /* p is changed in loop too */
1104 for (m = *p; *m; m++) {
1113 if (*(p + 1) && is_snomask(*(p + 1))) {
1115 tmpmask = umode_make_snomask(tmpmask, *++p, what);
1116 tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
1119 tmpmask = (what == MODE_ADD) ?
1120 (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
1122 SetServNotice(sptr);
1124 ClearServNotice(sptr);
1127 if (what == MODE_ADD)
1133 if (what == MODE_ADD)
1136 cli_flags(sptr) &= ~(FLAGS_OPER | FLAGS_LOCOP);
1137 if (MyConnect(sptr)) {
1138 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1139 cli_handler(sptr) = CLIENT_HANDLER;
1144 if (what == MODE_ADD)
1147 cli_flags(sptr) &= ~(FLAGS_OPER | FLAGS_LOCOP);
1148 if (MyConnect(sptr)) {
1149 tmpmask = cli_snomask(sptr) & ~SNO_OPER;
1150 cli_handler(sptr) = CLIENT_HANDLER;
1155 if (what == MODE_ADD)
1158 ClearInvisible(sptr);
1161 if (what == MODE_ADD)
1167 if (what == MODE_ADD)
1168 SetChannelService(sptr);
1170 ClearChannelService(sptr);
1173 if (what == MODE_ADD)
1184 * Evaluate rules for new user mode
1185 * Stop users making themselves operators too easily:
1187 if (!IsServer(cptr)) {
1188 if (!(setflags & FLAGS_OPER) && IsOper(sptr))
1190 if (!(setflags & FLAGS_LOCOP) && IsLocOp(sptr))
1193 * new umode; servers can set it, local users cannot;
1194 * prevents users from /kick'ing or /mode -o'ing
1196 if (!(setflags & FLAGS_CHSERV))
1197 ClearChannelService(sptr);
1199 * only send wallops to opers
1201 if (feature_bool(FEAT_WALLOPS_OPER_ONLY) && !IsAnOper(sptr) &&
1202 !(setflags & FLAGS_WALLOP))
1204 #ifdef SERVNOTICE_OPER_ONLY
1205 if (MyConnect(sptr) && !IsAnOper(sptr) && !(setflags & FLAGS_SERVNOTICE)) {
1206 ClearServNotice(sptr);
1207 set_snomask(sptr, 0, SNO_SET);
1210 #ifdef DEBUG_OPER_ONLY
1211 if (!IsAnOper(sptr) && !(setflags & FLAGS_DEBUG))
1215 if (MyConnect(sptr)) {
1216 if ((setflags & (FLAGS_OPER | FLAGS_LOCOP)) && !IsAnOper(sptr))
1217 det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPS);
1219 if (SendServNotice(sptr)) {
1220 if (tmpmask != cli_snomask(sptr))
1221 set_snomask(sptr, tmpmask, SNO_SET);
1222 if (cli_snomask(sptr) && snomask_given)
1223 send_reply(sptr, RPL_SNOMASK, cli_snomask(sptr), cli_snomask(sptr));
1225 set_snomask(sptr, 0, SNO_SET);
1228 * Compare new flags with old flags and send string which
1229 * will cause servers to update correctly.
1231 if (!(setflags & FLAGS_OPER) && IsOper(sptr)) { /* user now oper */
1233 client_set_privs(sptr); /* may set propagate privilege */
1235 if (HasPriv(sptr, PRIV_PROPAGATE)) /* remember propagate privilege setting */
1237 if ((setflags & FLAGS_OPER) && !IsOper(sptr)) { /* user no longer oper */
1239 client_set_privs(sptr); /* will clear propagate privilege */
1241 if ((setflags & FLAGS_INVISIBLE) && !IsInvisible(sptr))
1242 --UserStats.inv_clients;
1243 if (!(setflags & FLAGS_INVISIBLE) && IsInvisible(sptr))
1244 ++UserStats.inv_clients;
1245 send_umode_out(cptr, sptr, setflags, prop);
1251 * Build umode string for BURST command
1254 char *umode_str(struct Client *cptr)
1256 char* m = umodeBuf; /* Maximum string size: "owidg\0" */
1260 c_flags = cli_flags(cptr) & SEND_UMODES; /* cleaning up the original code */
1261 if (HasPriv(cptr, PRIV_PROPAGATE))
1262 c_flags |= FLAGS_OPER;
1264 c_flags &= ~FLAGS_OPER;
1266 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1267 if ( (c_flags & userModeList[i].flag))
1268 *m++ = userModeList[i].c;
1272 return umodeBuf; /* Note: static buffer, gets
1273 overwritten by send_umode() */
1277 * Send the MODE string for user (user) to connection cptr
1280 void send_umode(struct Client *cptr, struct Client *sptr, int old, int sendmask)
1285 int what = MODE_NULL;
1288 * Build a string in umodeBuf to represent the change in the user's
1289 * mode between the new (sptr->flag) and 'old'.
1293 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1294 flag = userModeList[i].flag;
1295 if (MyUser(sptr) && !(flag & sendmask))
1297 if ( (flag & old) && !(cli_flags(sptr) & flag))
1299 if (what == MODE_DEL)
1300 *m++ = userModeList[i].c;
1305 *m++ = userModeList[i].c;
1308 else if (!(flag & old) && (cli_flags(sptr) & flag))
1310 if (what == MODE_ADD)
1311 *m++ = userModeList[i].c;
1316 *m++ = userModeList[i].c;
1321 if (*umodeBuf && cptr)
1322 sendcmdto_one(sptr, CMD_MODE, cptr, "%s :%s", cli_name(sptr), umodeBuf);
1326 * Check to see if this resembles a sno_mask. It is if 1) there is
1327 * at least one digit and 2) The first digit occurs before the first
1328 * alphabetic character.
1330 int is_snomask(char *word)
1334 for (; *word; word++)
1337 else if (IsAlpha(*word))
1344 * If it begins with a +, count this as an additive mask instead of just
1345 * a replacement. If what == MODE_DEL, "+" has no special effect.
1347 unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
1349 unsigned int sno_what;
1350 unsigned int newmask;
1354 if (what == MODE_ADD)
1359 else if (*arg == '-')
1362 if (what == MODE_ADD)
1368 sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
1369 /* pity we don't have strtoul everywhere */
1370 newmask = (unsigned int)atoi(arg);
1371 if (sno_what == SNO_DEL)
1372 newmask = oldmask & ~newmask;
1373 else if (sno_what == SNO_ADD)
1378 static void delfrom_list(struct Client *cptr, struct SLink **list)
1381 struct SLink* prv = NULL;
1383 for (tmp = *list; tmp; tmp = tmp->next) {
1384 if (tmp->value.cptr == cptr) {
1386 prv->next = tmp->next;
1397 * This function sets a Client's server notices mask, according to
1398 * the parameter 'what'. This could be even faster, but the code
1399 * gets mighty hard to read :)
1401 void set_snomask(struct Client *cptr, unsigned int newmask, int what)
1403 unsigned int oldmask, diffmask; /* unsigned please */
1407 oldmask = cli_snomask(cptr);
1409 if (what == SNO_ADD)
1411 else if (what == SNO_DEL)
1412 newmask = oldmask & ~newmask;
1413 else if (what != SNO_SET) /* absolute set, no math needed */
1414 sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
1416 newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
1418 diffmask = oldmask ^ newmask;
1420 for (i = 0; diffmask >> i; i++) {
1421 if (((diffmask >> i) & 1))
1423 if (((newmask >> i) & 1))
1426 tmp->next = opsarray[i];
1427 tmp->value.cptr = cptr;
1431 /* not real portable :( */
1432 delfrom_list(cptr, &opsarray[i]);
1435 cli_snomask(cptr) = newmask;
1439 * is_silenced : Does the actual check wether sptr is allowed
1440 * to send a message to acptr.
1441 * Both must be registered persons.
1442 * If sptr is silenced by acptr, his message should not be propagated,
1443 * but more over, if this is detected on a server not local to sptr
1444 * the SILENCE mask is sent upstream.
1446 int is_silenced(struct Client *sptr, struct Client *acptr)
1450 static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
1451 static char senderip[16 + NICKLEN + USERLEN + 5];
1453 if (!cli_user(acptr) || !(lp = cli_user(acptr)->silence) || !(user = cli_user(sptr)))
1455 ircd_snprintf(0, sender, sizeof(sender), "%s!%s@%s", cli_name(sptr),
1456 user->username, user->host);
1457 ircd_snprintf(0, senderip, sizeof(senderip), "%s!%s@%s", cli_name(sptr),
1458 user->username, ircd_ntoa((const char*) &(cli_ip(sptr))));
1459 for (; lp; lp = lp->next)
1461 if ((!(lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, sender)) ||
1462 ((lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, senderip)))
1464 if (!MyConnect(sptr))
1466 sendcmdto_one(acptr, CMD_SILENCE, cli_from(sptr), "%C %s", sptr,
1478 * Removes all silence masks from the list of sptr that fall within `mask'
1479 * Returns -1 if none where found, 0 otherwise.
1481 int del_silence(struct Client *sptr, char *mask)
1487 for (lp = &(cli_user(sptr))->silence; *lp;) {
1488 if (!mmatch(mask, (*lp)->value.cp))
1492 MyFree(tmp->value.cp);
1502 int add_silence(struct Client* sptr, const char* mask)
1504 struct SLink *lp, **lpp;
1505 int cnt = 0, len = strlen(mask);
1508 for (lpp = &(cli_user(sptr))->silence, lp = *lpp; lp;)
1510 if (0 == ircd_strcmp(mask, lp->value.cp))
1512 if (!mmatch(mask, lp->value.cp))
1514 struct SLink *tmp = lp;
1515 *lpp = lp = lp->next;
1516 MyFree(tmp->value.cp);
1522 len += strlen(lp->value.cp);
1523 if ((len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXSILES))) ||
1524 (++cnt >= feature_int(FEAT_MAXSILES)))
1526 send_reply(sptr, ERR_SILELISTFULL, mask);
1529 else if (!mmatch(lp->value.cp, mask))
1536 memset(lp, 0, sizeof(struct SLink));
1537 lp->next = cli_user(sptr)->silence;
1538 lp->value.cp = (char*) MyMalloc(strlen(mask) + 1);
1539 assert(0 != lp->value.cp);
1540 strcpy(lp->value.cp, mask);
1541 if ((ip_start = strrchr(mask, '@')) && check_if_ipmask(ip_start + 1))
1542 lp->flags = CHFL_SILENCE_IPMASK;
1543 cli_user(sptr)->silence = lp;
1548 send_supported(struct Client *cptr)
1550 char featurebuf[512];
1552 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES1, FEATURESVALUES1);
1553 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1554 ircd_snprintf(0, featurebuf, sizeof(featurebuf), FEATURES2, FEATURESVALUES2);
1555 send_reply(cptr, RPL_ISUPPORT, featurebuf);
1557 return 0; /* convenience return, if it's ever needed */