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.
33 #include "ircd_alloc.h"
34 #include "ircd_chattr.h"
36 #include "ircd_reply.h"
37 #include "ircd_string.h"
45 #include "querycmds.h"
51 #include "s_serv.h" /* max_client_count */
53 #include "sprintf_irc.h"
56 #include "supported.h"
62 #include "handlers.h" /* m_motd and m_lusers */
72 static int userCount = 0;
75 * 'make_user' add's an User information block to a client
76 * if it was not previously allocated.
78 struct User *make_user(struct Client *cptr)
83 cptr->user = (struct User*) MyMalloc(sizeof(struct User));
84 assert(0 != cptr->user);
86 /* All variables are 0 by default */
87 memset(cptr->user, 0, sizeof(struct User));
91 cptr->user->refcnt = 1;
99 * Decrease user reference count by one and release block, if count reaches 0.
101 void free_user(struct User* user)
104 assert(0 < user->refcnt);
106 if (--user->refcnt == 0) {
112 assert(0 == user->joined);
113 assert(0 == user->invited);
114 assert(0 == user->channel);
123 void user_count_memory(size_t* count_out, size_t* bytes_out)
125 assert(0 != count_out);
126 assert(0 != bytes_out);
127 *count_out = userCount;
128 *bytes_out = userCount * sizeof(struct User);
132 * user_set_away - set user away state
133 * returns 1 if client is away or changed away message, 0 if
134 * client is removing away status.
135 * NOTE: this function may modify user and message, so they
138 int user_set_away(struct User* user, char* message)
145 if (EmptyString(message)) {
147 * Marking as not away
158 unsigned int len = strlen(message);
160 if (len > TOPICLEN) {
161 message[TOPICLEN] = '\0';
165 away = (char*) MyRealloc(away, len + 1);
167 away = (char*) MyMalloc(len + 1);
171 strcpy(away, message);
173 return (user->away != 0);
179 * Local function to find the next matching client. The search
180 * can be continued from the specified client entry. Normal
183 * for (x = client; x = next_client(x,mask); x = x->next)
184 * HandleMatchingClient;
187 struct Client *next_client(struct Client *next, const char* ch)
189 struct Client *tmp = next;
194 next = FindClient(ch);
195 next = next ? next : tmp;
196 if (tmp->prev == next)
200 for (; next; next = next->next)
201 if (!match(ch, next->name))
209 * Do the basic thing in delivering the message (command)
210 * across the relays to the specific server (server) for
213 * Note: The command is a format string and *MUST* be
214 * of prefixed style (e.g. ":%s COMMAND %s ...").
215 * Command can have only max 8 parameters.
217 * server parv[server] is the parameter identifying the
221 * parv[server] is replaced with the pointer to the
222 * real servername from the matched client (I'm lazy
225 * returns: (see #defines)
227 int hunt_server(int MustBeOper, struct Client *cptr, struct Client *sptr, char *command,
228 int server, int parc, char *parv[])
230 struct Client *acptr;
233 /* Assume it's me, if no server or an unregistered client */
234 if (parc <= server || EmptyString(parv[server]) || IsUnknown(sptr))
235 return (HUNTED_ISME);
237 /* Make sure it's a server */
238 if (MyUser(sptr) || Protocol(cptr) < 10)
240 /* Make sure it's a server */
241 if (!strchr(parv[server], '*')) {
242 if (0 == (acptr = FindClient(parv[server]))) {
243 sendto_one(sptr, err_str(ERR_NOSUCHSERVER),
244 me.name, parv[0], parv[server]);
245 return HUNTED_NOSUCH;
248 acptr = acptr->user->server;
250 else if (!(acptr = find_match_server(parv[server])))
252 send_reply(sptr, ERR_NOSUCHSERVER, parv[server]);
253 return (HUNTED_NOSUCH);
256 else if (!(acptr = FindNServer(parv[server])))
257 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
260 return (HUNTED_ISME);
262 if (MustBeOper && !IsPrivileged(sptr))
264 send_reply(sptr, ERR_NOPRIVILEGES);
265 return HUNTED_NOSUCH;
268 strcpy(y, acptr->yxx);
271 assert(!IsServer(sptr));
272 /* XXX sendto_one used with explicit command; must be very careful */
273 sendto_one(acptr, command, NumNick(sptr), parv[1], parv[2], parv[3], parv[4], /* XXX hunt_server */
274 parv[5], parv[6], parv[7], parv[8]);
276 return (HUNTED_PASS);
279 int hunt_server_cmd(struct Client *from, const char *cmd, const char *tok,
280 struct Client *one, int MustBeOper, const char *pattern,
281 int server, int parc, char *parv[])
283 struct Client *acptr;
286 /* Assume it's me, if no server or an unregistered client */
287 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
288 return (HUNTED_ISME);
290 /* Make sure it's a server */
292 /* Make sure it's a server */
293 if (!strchr(to, '*')) {
294 if (0 == (acptr = FindClient(to)))
295 return HUNTED_NOSUCH;
298 acptr = acptr->user->server;
299 } else if (!(acptr = find_match_server(to))) {
300 send_reply(from, ERR_NOSUCHSERVER, to);
301 return (HUNTED_NOSUCH);
303 } else if (!(acptr = FindNServer(to)))
304 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
307 return (HUNTED_ISME);
309 if (MustBeOper && !IsPrivileged(from)) {
310 send_reply(from, ERR_NOPRIVILEGES);
311 return HUNTED_NOSUCH;
314 assert(!IsServer(from));
316 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
318 sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
319 parv[4], parv[5], parv[6], parv[7], parv[8]);
321 return (HUNTED_PASS);
325 * 'do_nick_name' ensures that the given parameter (nick) is really a proper
326 * string for a nickname (note, the 'nick' may be modified in the process...)
328 * RETURNS the length of the final NICKNAME (0, if nickname is invalid)
330 * Nickname characters are in range 'A'..'}', '_', '-', '0'..'9'
331 * anything outside the above set will terminate nickname.
332 * In addition, the first character cannot be '-' or a Digit.
335 * The '~'-character should be allowed, but a change should be global,
336 * some confusion would result if only few servers allowed it...
338 int do_nick_name(char* nick)
341 char* end = ch + NICKLEN;
344 if (*ch == '-' || IsDigit(*ch)) /* first character in [0..9-] */
347 for ( ; (ch < end) && *ch; ++ch)
348 if (!IsNickChar(*ch))
359 * Copy `source' to `dest', replacing all occurances of '~' and characters that
360 * are not `isIrcUi' by an underscore.
361 * Copies at most USERLEN - 1 characters or up till the first control character.
362 * If `tilde' is true, then a tilde is prepended to `dest'.
363 * Note that `dest' and `source' can point to the same area or to different
364 * non-overlapping areas.
366 static char *clean_user_id(char *dest, char *source, int tilde)
373 ch = *s++; /* Store first character to copy: */
376 *d++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
379 while (ch && !IsCntrl(ch) && rlen--)
381 char nch = *s++; /* Store next character to copy */
382 *d++ = IsUserChar(ch) ? ch : '_'; /* This possibly overwrites it */
395 * This function is called when both NICK and USER messages
396 * have been accepted for the client, in whatever order. Only
397 * after this the USER message is propagated.
399 * NICK's must be propagated at once when received, although
400 * it would be better to delay them too until full info is
401 * available. Doing it is not so simple though, would have
402 * to implement the following:
404 * 1) user telnets in and gives only "NICK foobar" and waits
405 * 2) another user far away logs in normally with the nick
406 * "foobar" (quite legal, as this server didn't propagate it).
407 * 3) now this server gets nick "foobar" from outside, but
408 * has already the same defined locally. Current server
409 * would just issue "KILL foobar" to clean out dups. But,
410 * this is not fair. It should actually request another
411 * nick from local user or kill him/her...
413 int register_user(struct Client *cptr, struct Client *sptr,
414 const char *nick, char *username, struct Gline *agline)
416 struct ConfItem* aconf;
420 char c = 0; /* not alphanum */
421 char d = 'a'; /* not a digit */
429 short digitgroups = 0;
430 struct User* user = sptr->user;
432 char featurebuf[512];
434 user->last = CurrentTime;
435 parv[0] = sptr->name;
436 parv[1] = parv[2] = NULL;
440 static time_t last_too_many1;
441 static time_t last_too_many2;
443 assert(cptr == sptr);
444 switch (conf_check_client(sptr))
448 case ACR_NO_AUTHORIZATION:
449 sendto_opmask_butone(0, SNO_UNAUTH, "Unauthorized connection from %s.",
450 get_client_name(sptr, HIDE_IP));
451 ++ServerStats->is_ref;
452 return exit_client(cptr, sptr, &me,
453 "No Authorization - use another server");
454 case ACR_TOO_MANY_IN_CLASS:
455 if (CurrentTime - last_too_many1 >= (time_t) 60)
457 last_too_many1 = CurrentTime;
458 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections in "
460 get_client_name(sptr, HIDE_IP));
462 ++ServerStats->is_ref;
463 IPcheck_connect_fail(sptr->ip);
464 return exit_client(cptr, sptr, &me,
465 "Sorry, your connection class is full - try "
466 "again later or try another server");
467 case ACR_TOO_MANY_FROM_IP:
468 if (CurrentTime - last_too_many2 >= (time_t) 60)
470 last_too_many2 = CurrentTime;
471 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections from "
473 get_client_name(sptr, HIDE_IP));
475 ++ServerStats->is_ref;
476 return exit_client(cptr, sptr, &me,
477 "Too many connections from your host");
478 case ACR_ALREADY_AUTHORIZED:
479 /* Can this ever happen? */
481 ++ServerStats->is_ref;
482 IPcheck_connect_fail(sptr->ip);
483 return exit_client(cptr, sptr, &me, "Unknown error -- Try again");
485 ircd_strncpy(user->host, sptr->sockhost, HOSTLEN);
486 aconf = sptr->confs->value.aconf;
488 clean_user_id(user->username,
489 (sptr->flags & FLAGS_GOTID) ? sptr->username : username,
490 (sptr->flags & FLAGS_DOID) && !(sptr->flags & FLAGS_GOTID));
492 if ((user->username[0] == '\0')
493 || ((user->username[0] == '~') && (user->username[1] == '\000')))
494 return exit_client(cptr, sptr, &me, "USER: Bogus userid.");
496 if (!EmptyString(aconf->passwd)
497 && !(IsDigit(*aconf->passwd) && !aconf->passwd[1])
498 && strcmp(sptr->passwd, aconf->passwd))
500 ServerStats->is_ref++;
501 IPcheck_connect_fail(sptr->ip);
502 send_reply(sptr, ERR_PASSWDMISMATCH);
503 return exit_client(cptr, sptr, &me, "Bad Password");
505 memset(sptr->passwd, 0, sizeof(sptr->passwd));
507 * following block for the benefit of time-dependent K:-lines
509 if (find_kill(sptr)) {
510 ServerStats->is_ref++;
511 IPcheck_connect_fail(sptr->ip);
512 return exit_client(cptr, sptr, &me, "K-lined");
515 * Check for mixed case usernames, meaning probably hacked. Jon2 3-94
516 * Summary of rules now implemented in this patch: Ensor 11-94
517 * In a mixed-case name, if first char is upper, one more upper may
518 * appear anywhere. (A mixed-case name *must* have an upper first
519 * char, and may have one other upper.)
520 * A third upper may appear if all 3 appear at the beginning of the
521 * name, separated only by "others" (-/_/.).
522 * A single group of digits is allowed anywhere.
523 * Two groups of digits are allowed if at least one of the groups is
524 * at the beginning or the end.
525 * Only one '-', '_', or '.' is allowed (or two, if not consecutive).
526 * But not as the first or last char.
527 * No other special characters are allowed.
528 * Name must contain at least one letter.
530 tmpstr2 = tmpstr = (username[0] == '~' ? &username[1] : username);
531 while (*tmpstr && !badid)
543 if ((leadcaps || pos == 1) && !lower && !digits)
549 if (pos == 1 || !IsDigit(d))
556 else if (c == '-' || c == '_' || c == '.')
561 else if (d == '-' || d == '_' || d == '.' || other > 2)
570 if (lower && upper && (!leadcaps || leadcaps > 3 ||
571 (upper > 2 && upper > leadcaps)))
573 else if (digitgroups == 2 && !(IsDigit(tmpstr2[0]) || IsDigit(c)))
575 else if ((!lower && !upper) || !IsAlnum(c))
578 if (badid && (!(sptr->flags & FLAGS_GOTID) ||
579 strcmp(sptr->username, username) != 0))
581 ServerStats->is_ref++;
583 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
584 ":Your username is invalid.");
585 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
586 ":Connect with your real username, in lowercase.");
587 send_reply(cptr, SND_EXPLICIT | ERR_INVALIDUSERNAME,
588 ":If your mail address were foo@bar.com, your username "
590 return exit_client(cptr, sptr, &me, "USER: Bad username");
592 Count_unknownbecomesclient(sptr, UserStats);
595 ircd_strncpy(user->username, username, USERLEN);
596 Count_newremoteclient(UserStats, user->server);
600 /* a gline wasn't passed in, so find a matching global one that isn't
601 * a Uworld-set one, and propagate it if there is such an animal.
604 (agline = gline_lookup(sptr, GLINE_GLOBAL | GLINE_LASTMOD)) &&
605 !IsBurstOrBurstAck(cptr))
606 gline_resend(cptr, agline);
608 if (IsInvisible(sptr))
609 ++UserStats.inv_clients;
613 if (MyConnect(sptr)) {
614 sptr->handler = CLIENT_HANDLER;
615 release_dns_reply(sptr);
617 send_reply(sptr, RPL_WELCOME, nick);
619 * This is a duplicate of the NOTICE but see below...
621 send_reply(sptr, RPL_YOURHOST, me.name, version);
622 send_reply(sptr, RPL_CREATED, creation);
623 send_reply(sptr, RPL_MYINFO, me.name, version);
624 sprintf_irc(featurebuf,FEATURES,FEATURESVALUES);
625 send_reply(sptr, RPL_ISUPPORT, featurebuf);
626 m_lusers(sptr, sptr, 1, parv);
629 nextping = CurrentTime;
630 if (sptr->snomask & SNO_NOISY)
631 set_snomask(sptr, sptr->snomask & SNO_NOISY, SNO_ADD);
632 IPcheck_connect_succeeded(sptr);
635 /* if (IsServer(cptr)) */
637 struct Client *acptr;
639 acptr = user->server;
640 if (acptr->from != sptr->from)
642 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
643 sptr, me.name, user->server->name, acptr->from->name,
644 acptr->from->sockhost);
645 sptr->flags |= FLAGS_KILLED;
646 return exit_client(cptr, sptr, &me, "NICK server wrong direction");
649 sptr->flags |= (acptr->flags & FLAGS_TS8);
652 * Check to see if this user is being propogated
653 * as part of a net.burst, or is using protocol 9.
654 * FIXME: This can be speeded up - its stupid to check it for
655 * every NICK message in a burst again --Run.
657 for (acptr = user->server; acptr != &me; acptr = acptr->serv->up) {
658 if (IsBurst(acptr) || Protocol(acptr) < 10)
661 if (!IPcheck_remote_connect(sptr, (acptr != &me))) {
663 * We ran out of bits to count this
665 sendcmdto_one(&me, CMD_KILL, sptr, "%C :%s (Too many connections from your host -- Ghost)",
667 return exit_client(cptr, sptr, &me,"Too many connections from your host -- throttled");
670 tmpstr = umode_str(sptr);
672 sendcmdto_serv_butone(user->server, CMD_NICK, cptr,
673 "%s %d %Tu %s %s %s%s%s%%%Tu:%s@%s %s %s%s :%s",
674 nick, sptr->hopcount + 1, sptr->lastnick,
675 user->username, user->host,
676 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
677 GlineLastMod(agline), GlineUser(agline),
679 inttobase64(ip_base64, ntohl(sptr->ip.s_addr), 6),
680 NumNick(sptr), sptr->info);
682 sendcmdto_serv_butone(user->server, CMD_NICK, cptr,
683 "%s %d %Tu %s %s %s%s%s%s %s%s :%s",
684 nick, sptr->hopcount + 1, sptr->lastnick,
685 user->username, user->host,
686 *tmpstr ? "+" : "", tmpstr, *tmpstr ? " " : "",
687 inttobase64(ip_base64, ntohl(sptr->ip.s_addr), 6),
688 NumNick(sptr), sptr->info);
690 /* Send umode to client */
693 send_umode(cptr, sptr, 0, ALL_UMODES);
694 if (sptr->snomask != SNO_DEFAULT && (sptr->flags & FLAGS_SERVNOTICE))
695 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
702 static const struct UserMode {
707 { FLAGS_LOCOP, 'O' },
708 { FLAGS_INVISIBLE, 'i' },
709 { FLAGS_WALLOP, 'w' },
710 { FLAGS_SERVNOTICE, 's' },
712 { FLAGS_CHSERV, 'k' },
716 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
719 static int user_modes[] = {
722 FLAGS_INVISIBLE, 'i',
724 FLAGS_SERVNOTICE, 's',
733 * XXX - find a way to get rid of this
735 static char umodeBuf[BUFSIZE];
737 int set_nick_name(struct Client* cptr, struct Client* sptr,
738 const char* nick, int parc, char* parv[])
740 if (IsServer(sptr)) {
744 struct Gline *agline = 0;
747 * A server introducing a new client, change source
749 struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
750 assert(0 != new_client);
752 new_client->hopcount = atoi(parv[2]);
753 new_client->lastnick = atoi(parv[3]);
754 if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') {
755 for (p = parv[6] + 1; *p; p++) {
756 for (i = 0; i < USERMODELIST_SIZE; ++i) {
757 if (userModeList[i].c == *p) {
758 new_client->flags |= userModeList[i].flag;
767 strcpy(new_client->name, nick);
768 new_client->user = make_user(new_client);
769 new_client->user->server = sptr;
770 SetRemoteNumNick(new_client, parv[parc - 2]);
772 * IP# of remote client
774 new_client->ip.s_addr = htonl(base64toint(parv[parc - 3]));
776 add_client_to_list(new_client);
777 hAddClient(new_client);
779 sptr->serv->ghost = 0; /* :server NICK means end of net.burst */
780 ircd_strncpy(new_client->username, parv[4], USERLEN);
781 ircd_strncpy(new_client->user->host, parv[5], HOSTLEN);
782 ircd_strncpy(new_client->info, parv[parc - 1], REALLEN);
784 /* Deal with GLINE parameters... */
785 if (*parv[parc - 4] == '%' && (t = strchr(parv[parc - 4] + 1, ':'))) {
789 lastmod = atoi(parv[parc - 4] + 1);
792 (agline = gline_find(t, GLINE_EXACT | GLINE_GLOBAL | GLINE_LASTMOD))
793 && GlineLastMod(agline) > lastmod && !IsBurstOrBurstAck(cptr))
794 gline_resend(cptr, agline);
796 return register_user(cptr, new_client, new_client->name, parv[4], agline);
798 else if (sptr->name[0]) {
800 * Client changing its nick
802 * If the client belongs to me, then check to see
803 * if client is on any channels where it is currently
804 * banned. If so, do not allow the nick change to occur.
807 const char* channel_name;
808 if ((channel_name = find_no_nickchange_channel(sptr))) {
809 return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
812 * Refuse nick change if the last nick change was less
813 * then 30 seconds ago. This is intended to get rid of
814 * clone bots doing NICK FLOOD. -SeKs
815 * If someone didn't change their nick for more then 60 seconds
816 * however, allow to do two nick changes immedately after another
817 * before limiting the nick flood. -Run
819 if (CurrentTime < cptr->nextnick) {
821 send_reply(cptr, ERR_NICKTOOFAST, parv[1],
822 cptr->nextnick - CurrentTime);
823 /* Send error message */
824 sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cptr->name);
825 /* bounce NICK to user */
826 return 0; /* ignore nick change! */
829 /* Limit total to 1 change per NICK_DELAY seconds: */
830 cptr->nextnick += NICK_DELAY;
831 /* However allow _maximal_ 1 extra consecutive nick change: */
832 if (cptr->nextnick < CurrentTime)
833 cptr->nextnick = CurrentTime;
837 * Also set 'lastnick' to current time, if changed.
839 if (0 != ircd_strcmp(parv[0], nick))
840 sptr->lastnick = (sptr == cptr) ? TStime() : atoi(parv[2]);
843 * Client just changing his/her nick. If he/she is
844 * on a channel, send note of change to all clients
845 * on that channel. Propagate notice to other servers.
848 sendcmdto_common_channels(sptr, CMD_NICK, ":%s", nick);
849 add_history(sptr, 1);
850 sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
854 sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
858 strcpy(sptr->name, nick);
862 /* Local client setting NICK the first time */
864 strcpy(sptr->name, nick);
866 sptr->user = make_user(sptr);
867 sptr->user->server = &me;
869 SetLocalNumNick(sptr);
873 * If the client hasn't gotten a cookie-ping yet,
874 * choose a cookie and send it. -record!jegelhof@cloud9.net
878 sptr->cookie = (ircrandom() & 0x7fffffff);
879 } while (!sptr->cookie);
880 sendrawto_one(cptr, MSG_PING " :%u", sptr->cookie);
882 else if (*sptr->user->host && sptr->cookie == COOKIE_VERIFIED) {
884 * USER and PONG already received, now we have NICK.
885 * register_user may reject the client and call exit_client
886 * for it - must test this and exit m_nick too !
888 sptr->lastnick = TStime(); /* Always local client */
889 if (register_user(cptr, sptr, nick, sptr->user->username, 0) == CPTR_KILLED)
896 static unsigned char hash_target(unsigned int target)
898 return (unsigned char) (target >> 16) ^ (target >> 8);
904 * sptr must be a local client!
906 * Cannonifies target for client `sptr'.
908 void add_target(struct Client *sptr, void *target)
910 /* Ok, this shouldn't work esp on alpha
912 unsigned char hash = hash_target((unsigned long) target);
913 unsigned char* targets;
918 targets = sptr->targets;
922 for (i = 0; i < MAXTARGETS; ++i) {
923 if (targets[i] == hash)
929 memmove(&targets[RESERVEDTARGETS + 1],
930 &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
931 targets[RESERVEDTARGETS] = hash;
937 * sptr must be a local client !
939 * Returns 'true' (1) when too many targets are addressed.
940 * Returns 'false' (0) when it's ok to send to this target.
942 int check_target_limit(struct Client *sptr, void *target, const char *name,
945 unsigned char hash = hash_target((unsigned long) target);
947 unsigned char* targets;
951 targets = sptr->targets;
954 * Same target as last time?
956 if (targets[0] == hash)
958 for (i = 1; i < MAXTARGETS; ++i) {
959 if (targets[i] == hash) {
960 memmove(&targets[1], &targets[0], i);
969 if (CurrentTime < sptr->nexttarget) {
970 if (sptr->nexttarget - CurrentTime < TARGET_DELAY + 8) {
974 sptr->nexttarget += 2;
975 send_reply(sptr, ERR_TARGETTOOFAST, name,
976 sptr->nexttarget - CurrentTime);
982 /* XXX Let's get rid of GODMODE */
983 sendto_one(sptr, ":%s NOTICE %s :New target: %s; ft " TIME_T_FMT, /* XXX Possibly DEAD */
984 me.name, sptr->name, name, (CurrentTime - sptr->nexttarget) / TARGET_DELAY);
986 sptr->nexttarget += TARGET_DELAY;
987 if (sptr->nexttarget < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
988 sptr->nexttarget = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
991 memmove(&targets[1], &targets[0], MAXTARGETS - 1);
997 * whisper - called from m_cnotice and m_cprivmsg.
999 * parv[0] = sender prefix
1001 * parv[2] = #channel
1002 * parv[3] = Private message text
1004 * Added 971023 by Run.
1005 * Reason: Allows channel operators to sent an arbitrary number of private
1006 * messages to users on their channel, avoiding the max.targets limit.
1007 * Building this into m_private would use too much cpu because we'd have
1008 * to a cross channel lookup for every private message!
1009 * Note that we can't allow non-chan ops to use this command, it would be
1010 * abused by mass advertisers.
1013 int whisper(struct Client* source, const char* nick, const char* channel,
1014 const char* text, int is_notice)
1016 struct Client* dest;
1017 struct Channel* chptr;
1018 struct Membership* membership;
1020 assert(0 != source);
1022 assert(0 != channel);
1023 assert(MyUser(source));
1025 if (!(dest = FindUser(nick))) {
1026 return send_reply(source, ERR_NOSUCHNICK, nick);
1028 if (!(chptr = FindChannel(channel))) {
1029 return send_reply(source, ERR_NOSUCHCHANNEL, channel);
1032 * compare both users channel lists, instead of the channels user list
1033 * since the link is the same, this should be a little faster for channels
1034 * with a lot of users
1036 for (membership = source->user->channel; membership; membership = membership->next_channel) {
1037 if (chptr == membership->channel)
1040 if (0 == membership) {
1041 return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
1043 if (!IsVoicedOrOpped(membership)) {
1044 return send_reply(source, ERR_VOICENEEDED, chptr->chname);
1047 * lookup channel in destination
1049 assert(0 != dest->user);
1050 for (membership = dest->user->channel; membership; membership = membership->next_channel) {
1051 if (chptr == membership->channel)
1054 if (0 == membership || IsZombie(membership)) {
1055 return send_reply(source, ERR_USERNOTINCHANNEL, dest->name, chptr->chname);
1057 if (is_silenced(source, dest))
1060 if (dest->user->away)
1061 send_reply(source, RPL_AWAY, dest->name, dest->user->away);
1063 sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
1065 sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
1071 * added Sat Jul 25 07:30:42 EST 1992
1073 void send_umode_out(struct Client *cptr, struct Client *sptr, int old)
1076 struct Client *acptr;
1078 send_umode(NULL, sptr, old, SEND_UMODES);
1080 for (i = HighestFd; i >= 0; i--) {
1081 if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
1082 (acptr != cptr) && (acptr != sptr) && *umodeBuf)
1083 sendcmdto_one(sptr, CMD_MODE, acptr, "%s :%s", sptr->name, umodeBuf);
1085 if (cptr && MyUser(cptr))
1086 send_umode(cptr, sptr, old, ALL_UMODES);
1091 * send_user_info - send user info userip/userhost
1092 * NOTE: formatter must put info into buffer and return a pointer to the end of
1093 * the data it put in the buffer.
1095 void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
1101 int users_found = 0;
1102 struct Client* acptr;
1103 char buf[BUFSIZE * 2];
1109 sbuf = sprintf_irc(buf, rpl_str(rpl), me.name, sptr->name);
1111 for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
1112 if ((acptr = FindUser(name))) {
1115 sbuf = (*fmt)(acptr, sbuf);
1117 if (5 == ++arg_count)
1120 send_buffer(sptr, buf);
1125 * set_user_mode() added 15/10/91 By Darren Reed.
1128 * parv[1] - username to change mode for
1129 * parv[2] - modes to change
1131 int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
1135 struct Client *acptr;
1139 unsigned int tmpmask = 0;
1140 int snomask_given = 0;
1146 return need_more_params(sptr, "MODE");
1148 if (!(acptr = FindUser(parv[1])))
1150 if (MyConnect(sptr))
1151 send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
1155 if (IsServer(sptr) || sptr != acptr)
1158 sendcmdto_flag_butone(&me, CMD_WALLOPS, 0, FLAGS_WALLOP,
1159 ":MODE for User %s from %s!%s", parv[1],
1160 cptr->name, sptr->name);
1162 send_reply(sptr, ERR_USERSDONTMATCH);
1170 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1171 if ( (userModeList[i].flag & sptr->flags))
1172 *m++ = userModeList[i].c;
1175 send_reply(sptr, RPL_UMODEIS, buf);
1176 if ((sptr->flags & FLAGS_SERVNOTICE) && MyConnect(sptr)
1178 (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
1179 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
1184 * find flags already set for user
1185 * why not just copy them?
1187 setflags = sptr->flags;
1190 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1191 if (sptr->flags & userModeList[i].flag)
1192 setflags |= userModeList[i].flag;
1195 if (MyConnect(sptr))
1196 tmpmask = sptr->snomask;
1199 * parse mode change string(s)
1201 for (p = &parv[2]; *p; p++) { /* p is changed in loop too */
1202 for (m = *p; *m; m++) {
1211 if (*(p + 1) && is_snomask(*(p + 1))) {
1213 tmpmask = umode_make_snomask(tmpmask, *++p, what);
1214 tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
1217 tmpmask = (what == MODE_ADD) ?
1218 (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
1220 sptr->flags |= FLAGS_SERVNOTICE;
1222 sptr->flags &= ~FLAGS_SERVNOTICE;
1225 if (what == MODE_ADD)
1231 if (what == MODE_ADD)
1234 sptr->flags &= ~(FLAGS_OPER | FLAGS_LOCOP);
1235 if (MyConnect(sptr)) {
1236 tmpmask = sptr->snomask & ~SNO_OPER;
1237 sptr->handler = CLIENT_HANDLER;
1242 if (what == MODE_ADD)
1245 sptr->flags &= ~(FLAGS_OPER | FLAGS_LOCOP);
1246 if (MyConnect(sptr)) {
1247 tmpmask = sptr->snomask & ~SNO_OPER;
1248 sptr->handler = CLIENT_HANDLER;
1253 if (what == MODE_ADD)
1256 ClearInvisible(sptr);
1259 if (what == MODE_ADD)
1265 if (what == MODE_ADD)
1266 SetChannelService(sptr);
1268 ClearChannelService(sptr);
1271 if (what == MODE_ADD)
1282 * Evaluate rules for new user mode
1283 * Stop users making themselves operators too easily:
1285 if (!IsServer(cptr)) {
1286 if (!(setflags & FLAGS_OPER) && IsOper(sptr))
1288 if (!(setflags & FLAGS_LOCOP) && IsLocOp(sptr))
1291 * new umode; servers can set it, local users cannot;
1292 * prevents users from /kick'ing or /mode -o'ing
1294 if (!(setflags & FLAGS_CHSERV))
1295 ClearChannelService(sptr);
1296 #ifdef WALLOPS_OPER_ONLY
1298 * only send wallops to opers
1300 if (!IsAnOper(sptr) && !(setflags & FLAGS_WALLOP))
1304 if (MyConnect(sptr)) {
1305 if ((setflags & (FLAGS_OPER | FLAGS_LOCOP)) && !IsAnOper(sptr))
1306 det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPS);
1308 if (tmpmask != sptr->snomask)
1309 set_snomask(sptr, tmpmask, SNO_SET);
1310 if (sptr->snomask && snomask_given)
1311 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
1314 * Compare new flags with old flags and send string which
1315 * will cause servers to update correctly.
1317 if ((setflags & FLAGS_OPER) && !IsOper(sptr))
1319 if (!(setflags & FLAGS_OPER) && IsOper(sptr))
1321 if ((setflags & FLAGS_INVISIBLE) && !IsInvisible(sptr))
1322 --UserStats.inv_clients;
1323 if (!(setflags & FLAGS_INVISIBLE) && IsInvisible(sptr))
1324 ++UserStats.inv_clients;
1325 send_umode_out(cptr, sptr, setflags);
1331 * Build umode string for BURST command
1334 char *umode_str(struct Client *cptr)
1336 char* m = umodeBuf; /* Maximum string size: "owidg\0" */
1340 c_flags = cptr->flags & SEND_UMODES; /* cleaning up the original code */
1342 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1343 if ( (c_flags & userModeList[i].flag))
1344 *m++ = userModeList[i].c;
1348 return umodeBuf; /* Note: static buffer, gets
1349 overwritten by send_umode() */
1353 * Send the MODE string for user (user) to connection cptr
1356 void send_umode(struct Client *cptr, struct Client *sptr, int old, int sendmask)
1361 int what = MODE_NULL;
1364 * Build a string in umodeBuf to represent the change in the user's
1365 * mode between the new (sptr->flag) and 'old'.
1369 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1370 flag = userModeList[i].flag;
1371 if (MyUser(sptr) && !(flag & sendmask))
1373 if ( (flag & old) && !(sptr->flags & flag))
1375 if (what == MODE_DEL)
1376 *m++ = userModeList[i].c;
1381 *m++ = userModeList[i].c;
1384 else if (!(flag & old) && (sptr->flags & flag))
1386 if (what == MODE_ADD)
1387 *m++ = userModeList[i].c;
1392 *m++ = userModeList[i].c;
1397 if (*umodeBuf && cptr)
1398 sendcmdto_one(sptr, CMD_MODE, cptr, "%s :%s", sptr->name, umodeBuf);
1402 * Check to see if this resembles a sno_mask. It is if 1) there is
1403 * at least one digit and 2) The first digit occurs before the first
1404 * alphabetic character.
1406 int is_snomask(char *word)
1410 for (; *word; word++)
1413 else if (IsAlpha(*word))
1420 * If it begins with a +, count this as an additive mask instead of just
1421 * a replacement. If what == MODE_DEL, "+" has no special effect.
1423 unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
1425 unsigned int sno_what;
1426 unsigned int newmask;
1430 if (what == MODE_ADD)
1435 else if (*arg == '-')
1438 if (what == MODE_ADD)
1444 sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
1445 /* pity we don't have strtoul everywhere */
1446 newmask = (unsigned int)atoi(arg);
1447 if (sno_what == SNO_DEL)
1448 newmask = oldmask & ~newmask;
1449 else if (sno_what == SNO_ADD)
1454 static void delfrom_list(struct Client *cptr, struct SLink **list)
1457 struct SLink* prv = NULL;
1459 for (tmp = *list; tmp; tmp = tmp->next) {
1460 if (tmp->value.cptr == cptr) {
1462 prv->next = tmp->next;
1473 * This function sets a Client's server notices mask, according to
1474 * the parameter 'what'. This could be even faster, but the code
1475 * gets mighty hard to read :)
1477 void set_snomask(struct Client *cptr, unsigned int newmask, int what)
1479 unsigned int oldmask, diffmask; /* unsigned please */
1483 oldmask = cptr->snomask;
1485 if (what == SNO_ADD)
1487 else if (what == SNO_DEL)
1488 newmask = oldmask & ~newmask;
1489 else if (what != SNO_SET) /* absolute set, no math needed */
1490 sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
1492 newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
1494 diffmask = oldmask ^ newmask;
1496 for (i = 0; diffmask >> i; i++) {
1497 if (((diffmask >> i) & 1))
1499 if (((newmask >> i) & 1))
1502 tmp->next = opsarray[i];
1503 tmp->value.cptr = cptr;
1507 /* not real portable :( */
1508 delfrom_list(cptr, &opsarray[i]);
1511 cptr->snomask = newmask;
1515 * is_silenced : Does the actual check wether sptr is allowed
1516 * to send a message to acptr.
1517 * Both must be registered persons.
1518 * If sptr is silenced by acptr, his message should not be propagated,
1519 * but more over, if this is detected on a server not local to sptr
1520 * the SILENCE mask is sent upstream.
1522 int is_silenced(struct Client *sptr, struct Client *acptr)
1526 static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
1527 static char senderip[16 + NICKLEN + USERLEN + 5];
1529 if (!(acptr->user) || !(lp = acptr->user->silence) || !(user = sptr->user))
1531 sprintf_irc(sender, "%s!%s@%s", sptr->name, user->username, user->host);
1532 sprintf_irc(senderip, "%s!%s@%s", sptr->name, user->username,
1533 ircd_ntoa((const char*) &sptr->ip));
1534 for (; lp; lp = lp->next)
1536 if ((!(lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, sender)) ||
1537 ((lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, senderip)))
1539 if (!MyConnect(sptr))
1541 sendcmdto_one(acptr, CMD_SILENCE, sptr->from, "%C %s", sptr,
1553 * Removes all silence masks from the list of sptr that fall within `mask'
1554 * Returns -1 if none where found, 0 otherwise.
1556 int del_silence(struct Client *sptr, char *mask)
1562 for (lp = &sptr->user->silence; *lp;) {
1563 if (!mmatch(mask, (*lp)->value.cp))
1567 MyFree(tmp->value.cp);
1577 int add_silence(struct Client* sptr, const char* mask)
1579 struct SLink *lp, **lpp;
1580 int cnt = 0, len = strlen(mask);
1583 for (lpp = &sptr->user->silence, lp = *lpp; lp;)
1585 if (0 == ircd_strcmp(mask, lp->value.cp))
1587 if (!mmatch(mask, lp->value.cp))
1589 struct SLink *tmp = lp;
1590 *lpp = lp = lp->next;
1591 MyFree(tmp->value.cp);
1597 len += strlen(lp->value.cp);
1598 if ((len > MAXSILELENGTH) || (++cnt >= MAXSILES))
1600 send_reply(sptr, ERR_SILELISTFULL, mask);
1603 else if (!mmatch(lp->value.cp, mask))
1610 memset(lp, 0, sizeof(struct SLink));
1611 lp->next = sptr->user->silence;
1612 lp->value.cp = (char*) MyMalloc(strlen(mask) + 1);
1613 assert(0 != lp->value.cp);
1614 strcpy(lp->value.cp, mask);
1615 if ((ip_start = strrchr(mask, '@')) && check_if_ipmask(ip_start + 1))
1616 lp->flags = CHFL_SILENCE_IPMASK;
1617 sptr->user->silence = lp;