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"
44 #include "querycmds.h"
50 #include "s_serv.h" /* max_client_count */
52 #include "sprintf_irc.h"
55 #include "supported.h"
61 #include "handlers.h" /* m_motd and m_lusers */
71 static int userCount = 0;
74 * 'make_user' add's an User information block to a client
75 * if it was not previously allocated.
77 struct User *make_user(struct Client *cptr)
82 cptr->user = (struct User*) MyMalloc(sizeof(struct User));
83 assert(0 != cptr->user);
85 /* All variables are 0 by default */
86 memset(cptr->user, 0, sizeof(struct User));
90 cptr->user->refcnt = 1;
98 * Decrease user reference count by one and release block, if count reaches 0.
100 void free_user(struct User* user)
103 assert(0 < user->refcnt);
105 if (--user->refcnt == 0) {
111 assert(0 == user->joined);
112 assert(0 == user->invited);
113 assert(0 == user->channel);
122 void user_count_memory(size_t* count_out, size_t* bytes_out)
124 assert(0 != count_out);
125 assert(0 != bytes_out);
126 *count_out = userCount;
127 *bytes_out = userCount * sizeof(struct User);
131 * user_set_away - set user away state
132 * returns 1 if client is away or changed away message, 0 if
133 * client is removing away status.
134 * NOTE: this function may modify user and message, so they
137 int user_set_away(struct User* user, char* message)
144 if (EmptyString(message)) {
146 * Marking as not away
157 unsigned int len = strlen(message);
159 if (len > TOPICLEN) {
160 message[TOPICLEN] = '\0';
164 away = (char*) MyRealloc(away, len + 1);
166 away = (char*) MyMalloc(len + 1);
170 strcpy(away, message);
172 return (user->away != 0);
178 * Local function to find the next matching client. The search
179 * can be continued from the specified client entry. Normal
182 * for (x = client; x = next_client(x,mask); x = x->next)
183 * HandleMatchingClient;
186 struct Client *next_client(struct Client *next, const char* ch)
188 struct Client *tmp = next;
193 next = FindClient(ch);
194 next = next ? next : tmp;
195 if (tmp->prev == next)
199 for (; next; next = next->next)
200 if (!match(ch, next->name))
208 * Do the basic thing in delivering the message (command)
209 * across the relays to the specific server (server) for
212 * Note: The command is a format string and *MUST* be
213 * of prefixed style (e.g. ":%s COMMAND %s ...").
214 * Command can have only max 8 parameters.
216 * server parv[server] is the parameter identifying the
220 * parv[server] is replaced with the pointer to the
221 * real servername from the matched client (I'm lazy
224 * returns: (see #defines)
226 int hunt_server(int MustBeOper, struct Client *cptr, struct Client *sptr, char *command,
227 int server, int parc, char *parv[])
229 struct Client *acptr;
232 /* Assume it's me, if no server or an unregistered client */
233 if (parc <= server || EmptyString(parv[server]) || IsUnknown(sptr))
234 return (HUNTED_ISME);
236 /* Make sure it's a server */
237 if (MyUser(sptr) || Protocol(cptr) < 10)
239 /* Make sure it's a server */
240 if (!strchr(parv[server], '*')) {
241 if (0 == (acptr = FindClient(parv[server])))
242 return HUNTED_NOSUCH;
244 acptr = acptr->user->server;
246 else if (!(acptr = find_match_server(parv[server])))
248 send_reply(sptr, ERR_NOSUCHSERVER, parv[server]);
249 return (HUNTED_NOSUCH);
252 else if (!(acptr = FindNServer(parv[server])))
253 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
256 return (HUNTED_ISME);
258 if (MustBeOper && !IsPrivileged(sptr))
260 send_reply(sptr, ERR_NOPRIVILEGES);
261 return HUNTED_NOSUCH;
264 strcpy(y, acptr->yxx);
267 assert(!IsServer(sptr));
268 /* XXX sendto_one used with explicit command; must be very careful */
269 sendto_one(acptr, command, NumNick(sptr), parv[1], parv[2], parv[3], parv[4],
270 parv[5], parv[6], parv[7], parv[8]);
272 return (HUNTED_PASS);
275 int hunt_server_cmd(struct Client *from, const char *cmd, const char *tok,
276 struct Client *one, int MustBeOper, const char *pattern,
277 int server, int parc, char *parv[])
279 struct Client *acptr;
282 /* Assume it's me, if no server or an unregistered client */
283 if (parc <= server || EmptyString((to = parv[server])) || IsUnknown(from))
284 return (HUNTED_ISME);
286 /* Make sure it's a server */
288 /* Make sure it's a server */
289 if (!strchr(to, '*')) {
290 if (0 == (acptr = FindClient(to)))
291 return HUNTED_NOSUCH;
294 acptr = acptr->user->server;
295 } else if (!(acptr = find_match_server(to))) {
296 send_reply(from, ERR_NOSUCHSERVER, to);
297 return (HUNTED_NOSUCH);
299 } else if (!(acptr = FindNServer(to)))
300 return (HUNTED_NOSUCH); /* Server broke off in the meantime */
303 return (HUNTED_ISME);
305 if (MustBeOper && !IsPrivileged(from)) {
306 send_reply(from, ERR_NOPRIVILEGES);
307 return HUNTED_NOSUCH;
310 assert(!IsServer(from));
312 parv[server] = (char *) acptr; /* HACK! HACK! HACK! ARGH! */
314 sendcmdto_one(from, cmd, tok, acptr, pattern, parv[1], parv[2], parv[3],
315 parv[4], parv[5], parv[6], parv[7], parv[8]);
317 return (HUNTED_PASS);
321 * 'do_nick_name' ensures that the given parameter (nick) is really a proper
322 * string for a nickname (note, the 'nick' may be modified in the process...)
324 * RETURNS the length of the final NICKNAME (0, if nickname is invalid)
326 * Nickname characters are in range 'A'..'}', '_', '-', '0'..'9'
327 * anything outside the above set will terminate nickname.
328 * In addition, the first character cannot be '-' or a Digit.
331 * The '~'-character should be allowed, but a change should be global,
332 * some confusion would result if only few servers allowed it...
334 int do_nick_name(char* nick)
337 char* end = ch + NICKLEN;
340 if (*ch == '-' || IsDigit(*ch)) /* first character in [0..9-] */
343 for ( ; (ch < end) && *ch; ++ch)
344 if (!IsNickChar(*ch))
355 * Copy `source' to `dest', replacing all occurances of '~' and characters that
356 * are not `isIrcUi' by an underscore.
357 * Copies at most USERLEN - 1 characters or up till the first control character.
358 * If `tilde' is true, then a tilde is prepended to `dest'.
359 * Note that `dest' and `source' can point to the same area or to different
360 * non-overlapping areas.
362 static char *clean_user_id(char *dest, char *source, int tilde)
369 ch = *s++; /* Store first character to copy: */
372 *d++ = '~'; /* If `dest' == `source', then this overwrites `ch' */
375 while (ch && !IsCntrl(ch) && rlen--)
377 char nch = *s++; /* Store next character to copy */
378 *d++ = IsUserChar(ch) ? ch : '_'; /* This possibly overwrites it */
391 * This function is called when both NICK and USER messages
392 * have been accepted for the client, in whatever order. Only
393 * after this the USER message is propagated.
395 * NICK's must be propagated at once when received, although
396 * it would be better to delay them too until full info is
397 * available. Doing it is not so simple though, would have
398 * to implement the following:
400 * 1) user telnets in and gives only "NICK foobar" and waits
401 * 2) another user far away logs in normally with the nick
402 * "foobar" (quite legal, as this server didn't propagate it).
403 * 3) now this server gets nick "foobar" from outside, but
404 * has already the same defined locally. Current server
405 * would just issue "KILL foobar" to clean out dups. But,
406 * this is not fair. It should actually request another
407 * nick from local user or kill him/her...
409 int register_user(struct Client *cptr, struct Client *sptr,
410 const char *nick, char *username)
412 struct ConfItem* aconf;
416 char c = 0; /* not alphanum */
417 char d = 'a'; /* not a digit */
425 short digitgroups = 0;
426 struct User* user = sptr->user;
428 char featurebuf[512];
431 user->last = CurrentTime;
432 parv[0] = sptr->name;
433 parv[1] = parv[2] = NULL;
437 static time_t last_too_many1;
438 static time_t last_too_many2;
440 assert(cptr == sptr);
441 switch (conf_check_client(sptr))
445 case ACR_NO_AUTHORIZATION:
446 sendto_opmask_butone(0, SNO_UNAUTH, "Unauthorized connection from %s.",
447 get_client_name(sptr, HIDE_IP));
448 ++ServerStats->is_ref;
449 return exit_client(cptr, sptr, &me,
450 "No Authorization - use another server");
451 case ACR_TOO_MANY_IN_CLASS:
452 if (CurrentTime - last_too_many1 >= (time_t) 60)
454 last_too_many1 = CurrentTime;
455 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections in "
457 get_client_name(sptr, HIDE_IP));
459 ++ServerStats->is_ref;
460 ip_registry_connect_fail(sptr->ip.s_addr);
461 return exit_client(cptr, sptr, &me,
462 "Sorry, your connection class is full - try "
463 "again later or try another server");
464 case ACR_TOO_MANY_FROM_IP:
465 if (CurrentTime - last_too_many2 >= (time_t) 60)
467 last_too_many2 = CurrentTime;
468 sendto_opmask_butone(0, SNO_TOOMANY, "Too many connections from "
470 get_client_name(sptr, HIDE_IP));
472 ++ServerStats->is_ref;
473 return exit_client(cptr, sptr, &me,
474 "Too many connections from your host");
475 case ACR_ALREADY_AUTHORIZED:
476 /* Can this ever happen? */
478 ++ServerStats->is_ref;
479 ip_registry_connect_fail(sptr->ip.s_addr);
480 return exit_client(cptr, sptr, &me, "Unknown error -- Try again");
482 ircd_strncpy(user->host, sptr->sockhost, HOSTLEN);
483 aconf = sptr->confs->value.aconf;
485 clean_user_id(user->username,
486 (sptr->flags & FLAGS_GOTID) ? sptr->username : username,
487 (sptr->flags & FLAGS_DOID) && !(sptr->flags & FLAGS_GOTID));
489 if ((user->username[0] == '\0')
490 || ((user->username[0] == '~') && (user->username[1] == '\000')))
491 return exit_client(cptr, sptr, &me, "USER: Bogus userid.");
493 if (!EmptyString(aconf->passwd)
494 && !(IsDigit(*aconf->passwd) && !aconf->passwd[1])
496 && strcmp("ONE", aconf->passwd)
498 && strcmp(sptr->passwd, aconf->passwd))
500 ServerStats->is_ref++;
501 ip_registry_connect_fail(sptr->ip.s_addr);
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 ip_registry_connect_fail(sptr->ip.s_addr);
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);
597 if ((gline = gline_lookup(sptr)) && GlineIsActive(gline))
598 gline_resend(cptr, gline);
602 if (IsInvisible(sptr))
603 ++UserStats.inv_clients;
607 if (MyConnect(sptr)) {
608 sptr->handler = CLIENT_HANDLER;
609 release_dns_reply(sptr);
611 send_reply(sptr, RPL_WELCOME, nick);
613 * This is a duplicate of the NOTICE but see below...
615 send_reply(sptr, RPL_YOURHOST, me.name, version);
616 send_reply(sptr, RPL_CREATED, creation);
617 send_reply(sptr, RPL_MYINFO, me.name, version);
618 sprintf_irc(featurebuf,FEATURES,FEATURESVALUES);
619 send_reply(sptr, RPL_ISUPPORT, featurebuf);
620 m_lusers(sptr, sptr, 1, parv);
623 m_motd(sptr, NULL, 1, parv);
625 m_motd(sptr, sptr, 1, parv);
627 nextping = CurrentTime;
628 if (sptr->snomask & SNO_NOISY)
629 set_snomask(sptr, sptr->snomask & SNO_NOISY, SNO_ADD);
630 ip_registry_connect_succeeded(sptr);
633 /* if (IsServer(cptr)) */
635 struct Client *acptr;
637 acptr = user->server;
638 if (acptr->from != sptr->from)
640 sendcmdto_one(&me, CMD_KILL, cptr, "%C :%s (%s != %s[%s])",
641 sptr, me.name, user->server->name, acptr->from->name,
642 acptr->from->sockhost);
643 sptr->flags |= FLAGS_KILLED;
644 return exit_client(cptr, sptr, &me, "NICK server wrong direction");
647 sptr->flags |= (acptr->flags & FLAGS_TS8);
650 * Check to see if this user is being propogated
651 * as part of a net.burst, or is using protocol 9.
652 * FIXME: This can be speeded up - its stupid to check it for
653 * every NICK message in a burst again --Run.
655 for (acptr = user->server; acptr != &me; acptr = acptr->serv->up) {
656 if (IsBurst(acptr) || Protocol(acptr) < 10)
659 if (!ip_registry_check_remote(sptr, (acptr != &me)))
661 * We ran out of bits to count this
663 return exit_client(cptr, sptr, &me, "More than 255 connections from this address");
666 tmpstr = umode_str(sptr);
667 sendcmdto_serv_butone(user->server, CMD_NICK, cptr, *tmpstr ?
668 "%s %d %d %s %s +%s %s %s%s :%s" :
669 "%s %d %d %s %s %s%s %s%s :%s",
670 nick, sptr->hopcount + 1, sptr->lastnick,
671 user->username, user->host, tmpstr,
672 inttobase64(ip_base64, ntohl(sptr->ip.s_addr), 6),
673 NumNick(sptr), sptr->info);
675 /* Send umode to client */
678 send_umode(cptr, sptr, 0, ALL_UMODES);
679 if (sptr->snomask != SNO_DEFAULT && (sptr->flags & FLAGS_SERVNOTICE))
680 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
687 static const struct UserMode {
692 { FLAGS_LOCOP, 'O' },
693 { FLAGS_INVISIBLE, 'i' },
694 { FLAGS_WALLOP, 'w' },
695 { FLAGS_SERVNOTICE, 's' },
697 { FLAGS_CHSERV, 'k' },
701 #define USERMODELIST_SIZE sizeof(userModeList) / sizeof(struct UserMode)
704 static int user_modes[] = {
707 FLAGS_INVISIBLE, 'i',
709 FLAGS_SERVNOTICE, 's',
718 * XXX - find a way to get rid of this
720 static char umodeBuf[BUFSIZE];
722 int set_nick_name(struct Client* cptr, struct Client* sptr,
723 const char* nick, int parc, char* parv[])
725 if (IsServer(sptr)) {
730 * A server introducing a new client, change source
732 struct Client* new_client = make_client(cptr, STAT_UNKNOWN);
733 assert(0 != new_client);
735 new_client->hopcount = atoi(parv[2]);
736 new_client->lastnick = atoi(parv[3]);
737 if (Protocol(cptr) > 9 && parc > 7 && *parv[6] == '+') {
738 for (p = parv[6] + 1; *p; p++) {
739 for (i = 0; i < USERMODELIST_SIZE; ++i) {
740 if (userModeList[i].c == *p) {
741 new_client->flags |= userModeList[i].flag;
750 strcpy(new_client->name, nick);
751 new_client->user = make_user(new_client);
752 new_client->user->server = sptr;
753 SetRemoteNumNick(new_client, parv[parc - 2]);
755 * IP# of remote client
757 new_client->ip.s_addr = htonl(base64toint(parv[parc - 3]));
759 add_client_to_list(new_client);
760 hAddClient(new_client);
762 sptr->serv->ghost = 0; /* :server NICK means end of net.burst */
763 ircd_strncpy(new_client->username, parv[4], USERLEN);
764 ircd_strncpy(new_client->user->host, parv[5], HOSTLEN);
765 ircd_strncpy(new_client->info, parv[parc - 1], REALLEN);
766 return register_user(cptr, new_client, new_client->name, parv[4]);
768 else if (sptr->name[0]) {
770 * Client changing its nick
772 * If the client belongs to me, then check to see
773 * if client is on any channels where it is currently
774 * banned. If so, do not allow the nick change to occur.
777 const char* channel_name;
778 if ((channel_name = find_no_nickchange_channel(sptr))) {
779 return send_reply(cptr, ERR_BANNICKCHANGE, channel_name);
782 * Refuse nick change if the last nick change was less
783 * then 30 seconds ago. This is intended to get rid of
784 * clone bots doing NICK FLOOD. -SeKs
785 * If someone didn't change their nick for more then 60 seconds
786 * however, allow to do two nick changes immedately after another
787 * before limiting the nick flood. -Run
789 if (CurrentTime < cptr->nextnick) {
791 send_reply(cptr, ERR_NICKTOOFAST, parv[1],
792 cptr->nextnick - CurrentTime);
793 /* Send error message */
794 sendcmdto_one(cptr, CMD_NICK, cptr, "%s", cptr->name);
795 /* bounce NICK to user */
796 return 0; /* ignore nick change! */
799 /* Limit total to 1 change per NICK_DELAY seconds: */
800 cptr->nextnick += NICK_DELAY;
801 /* However allow _maximal_ 1 extra consecutive nick change: */
802 if (cptr->nextnick < CurrentTime)
803 cptr->nextnick = CurrentTime;
807 * Also set 'lastnick' to current time, if changed.
809 if (0 != ircd_strcmp(parv[0], nick))
810 sptr->lastnick = (sptr == cptr) ? TStime() : atoi(parv[2]);
813 * Client just changing his/her nick. If he/she is
814 * on a channel, send note of change to all clients
815 * on that channel. Propagate notice to other servers.
818 sendcmdto_common_channels(sptr, CMD_NICK, ":%s", nick);
819 add_history(sptr, 1);
820 sendcmdto_serv_butone(sptr, CMD_NICK, cptr, "%s %Tu", nick,
824 sendcmdto_one(sptr, CMD_NICK, sptr, ":%s", nick);
828 strcpy(sptr->name, nick);
832 /* Local client setting NICK the first time */
834 strcpy(sptr->name, nick);
836 sptr->user = make_user(sptr);
837 sptr->user->server = &me;
839 SetLocalNumNick(sptr);
843 * If the client hasn't gotten a cookie-ping yet,
844 * choose a cookie and send it. -record!jegelhof@cloud9.net
848 sptr->cookie = (ircrandom() & 0x7fffffff);
849 } while (!sptr->cookie);
850 sendrawto_one(cptr, MSG_PING " :%u", sptr->cookie);
852 else if (*sptr->user->host && sptr->cookie == COOKIE_VERIFIED) {
854 * USER and PONG already received, now we have NICK.
855 * register_user may reject the client and call exit_client
856 * for it - must test this and exit m_nick too !
858 sptr->lastnick = TStime(); /* Always local client */
859 if (register_user(cptr, sptr, nick, sptr->user->username) == CPTR_KILLED)
866 static unsigned char hash_target(unsigned int target)
868 return (unsigned char) (target >> 16) ^ (target >> 8);
874 * sptr must be a local client!
876 * Cannonifies target for client `sptr'.
878 void add_target(struct Client *sptr, void *target)
880 unsigned char hash = hash_target((unsigned int) target);
881 unsigned char* targets;
886 targets = sptr->targets;
890 for (i = 0; i < MAXTARGETS; ++i) {
891 if (targets[i] == hash)
897 memmove(&targets[RESERVEDTARGETS + 1],
898 &targets[RESERVEDTARGETS], MAXTARGETS - RESERVEDTARGETS - 1);
899 targets[RESERVEDTARGETS] = hash;
905 * sptr must be a local client !
907 * Returns 'true' (1) when too many targets are addressed.
908 * Returns 'false' (0) when it's ok to send to this target.
910 int check_target_limit(struct Client *sptr, void *target, const char *name,
913 unsigned char hash = hash_target((unsigned int) target);
915 unsigned char* targets;
919 targets = sptr->targets;
922 * Same target as last time?
924 if (targets[0] == hash)
926 for (i = 1; i < MAXTARGETS; ++i) {
927 if (targets[i] == hash) {
928 memmove(&targets[1], &targets[0], i);
937 if (CurrentTime < sptr->nexttarget) {
938 if (sptr->nexttarget - CurrentTime < TARGET_DELAY + 8) {
942 sptr->nexttarget += 2;
943 send_reply(sptr, ERR_TARGETTOOFAST, name,
944 sptr->nexttarget - CurrentTime);
950 /* XXX Let's get rid of GODMODE */
951 sendto_one(sptr, ":%s NOTICE %s :New target: %s; ft " TIME_T_FMT, /* XXX Possibly DEAD */
952 me.name, sptr->name, name, (CurrentTime - sptr->nexttarget) / TARGET_DELAY);
954 sptr->nexttarget += TARGET_DELAY;
955 if (sptr->nexttarget < CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1)))
956 sptr->nexttarget = CurrentTime - (TARGET_DELAY * (MAXTARGETS - 1));
959 memmove(&targets[1], &targets[0], MAXTARGETS - 1);
965 * whisper - called from m_cnotice and m_cprivmsg.
967 * parv[0] = sender prefix
970 * parv[3] = Private message text
972 * Added 971023 by Run.
973 * Reason: Allows channel operators to sent an arbitrary number of private
974 * messages to users on their channel, avoiding the max.targets limit.
975 * Building this into m_private would use too much cpu because we'd have
976 * to a cross channel lookup for every private message!
977 * Note that we can't allow non-chan ops to use this command, it would be
978 * abused by mass advertisers.
981 int whisper(struct Client* source, const char* nick, const char* channel,
982 const char* text, int is_notice)
985 struct Channel* chptr;
986 struct Membership* membership;
990 assert(0 != channel);
991 assert(MyUser(source));
993 if (!(dest = FindUser(nick))) {
994 return send_reply(source, ERR_NOSUCHNICK, nick);
996 if (!(chptr = FindChannel(channel))) {
997 return send_reply(source, ERR_NOSUCHCHANNEL, channel);
1000 * compare both users channel lists, instead of the channels user list
1001 * since the link is the same, this should be a little faster for channels
1002 * with a lot of users
1004 for (membership = source->user->channel; membership; membership = membership->next_channel) {
1005 if (chptr == membership->channel)
1008 if (0 == membership) {
1009 return send_reply(source, ERR_NOTONCHANNEL, chptr->chname);
1011 if (!IsVoicedOrOpped(membership)) {
1012 return send_reply(source, ERR_VOICENEEDED, chptr->chname);
1015 * lookup channel in destination
1017 assert(0 != dest->user);
1018 for (membership = dest->user->channel; membership; membership = membership->next_channel) {
1019 if (chptr == membership->channel)
1022 if (0 == membership || IsZombie(membership)) {
1023 return send_reply(source, ERR_USERNOTINCHANNEL, dest->name, chptr->chname);
1025 if (is_silenced(source, dest))
1028 if (dest->user->away)
1029 send_reply(source, RPL_AWAY, dest->name, dest->user->away);
1031 sendcmdto_one(source, CMD_NOTICE, dest, "%C :%s", dest, text);
1033 sendcmdto_one(source, CMD_PRIVATE, dest, "%C :%s", dest, text);
1039 * added Sat Jul 25 07:30:42 EST 1992
1041 void send_umode_out(struct Client *cptr, struct Client *sptr, int old)
1044 struct Client *acptr;
1046 send_umode(NULL, sptr, old, SEND_UMODES);
1048 for (i = HighestFd; i >= 0; i--) {
1049 if ((acptr = LocalClientArray[i]) && IsServer(acptr) &&
1050 (acptr != cptr) && (acptr != sptr) && *umodeBuf)
1051 sendcmdto_one(sptr, CMD_MODE, acptr, "%s :%s", sptr->name, umodeBuf);
1053 if (cptr && MyUser(cptr))
1054 send_umode(cptr, sptr, old, ALL_UMODES);
1059 * send_user_info - send user info userip/userhost
1060 * NOTE: formatter must put info into buffer and return a pointer to the end of
1061 * the data it put in the buffer.
1063 void send_user_info(struct Client* sptr, char* names, int rpl, InfoFormatter fmt)
1069 int users_found = 0;
1070 struct Client* acptr;
1071 char buf[BUFSIZE * 2];
1077 sbuf = sprintf_irc(buf, rpl_str(rpl), me.name, sptr->name);
1079 for (name = ircd_strtok(&p, names, " "); name; name = ircd_strtok(&p, 0, " ")) {
1080 if ((acptr = FindUser(name))) {
1083 sbuf = (*fmt)(acptr, sbuf);
1085 if (5 == ++arg_count)
1089 send_buffer(sptr, buf);
1094 * set_user_mode() added 15/10/91 By Darren Reed.
1097 * parv[1] - username to change mode for
1098 * parv[2] - modes to change
1100 int set_user_mode(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
1104 struct Client *acptr;
1108 unsigned int tmpmask = 0;
1109 int snomask_given = 0;
1115 return need_more_params(sptr, "MODE");
1117 if (!(acptr = FindUser(parv[1])))
1119 if (MyConnect(sptr))
1120 send_reply(sptr, ERR_NOSUCHCHANNEL, parv[1]);
1124 if (IsServer(sptr) || sptr != acptr)
1127 sendcmdto_flag_butone(&me, CMD_WALLOPS, 0, FLAGS_WALLOP,
1128 ":MODE for User %s from %s!%s", parv[1],
1129 cptr->name, sptr->name);
1131 send_reply(sptr, ERR_USERSDONTMATCH);
1139 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1140 if ( (userModeList[i].flag & sptr->flags))
1141 *m++ = userModeList[i].c;
1144 send_reply(sptr, RPL_UMODEIS, buf);
1145 if ((sptr->flags & FLAGS_SERVNOTICE) && MyConnect(sptr)
1147 (unsigned int)(IsOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT))
1148 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
1153 * find flags already set for user
1154 * why not just copy them?
1156 setflags = sptr->flags;
1159 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1160 if (sptr->flags & userModeList[i].flag)
1161 setflags |= userModeList[i].flag;
1164 if (MyConnect(sptr))
1165 tmpmask = sptr->snomask;
1168 * parse mode change string(s)
1170 for (p = &parv[2]; *p; p++) { /* p is changed in loop too */
1171 for (m = *p; *m; m++) {
1180 if (*(p + 1) && is_snomask(*(p + 1))) {
1182 tmpmask = umode_make_snomask(tmpmask, *++p, what);
1183 tmpmask &= (IsAnOper(sptr) ? SNO_ALL : SNO_USER);
1186 tmpmask = (what == MODE_ADD) ?
1187 (IsAnOper(sptr) ? SNO_OPERDEFAULT : SNO_DEFAULT) : 0;
1189 sptr->flags |= FLAGS_SERVNOTICE;
1191 sptr->flags &= ~FLAGS_SERVNOTICE;
1194 if (what == MODE_ADD)
1200 if (what == MODE_ADD)
1203 sptr->flags &= ~(FLAGS_OPER | FLAGS_LOCOP);
1204 if (MyConnect(sptr)) {
1205 tmpmask = sptr->snomask & ~SNO_OPER;
1206 sptr->handler = CLIENT_HANDLER;
1211 if (what == MODE_ADD)
1214 sptr->flags &= ~(FLAGS_OPER | FLAGS_LOCOP);
1215 if (MyConnect(sptr)) {
1216 tmpmask = sptr->snomask & ~SNO_OPER;
1217 sptr->handler = CLIENT_HANDLER;
1222 if (what == MODE_ADD)
1225 ClearInvisible(sptr);
1228 if (what == MODE_ADD)
1234 if (what == MODE_ADD)
1235 SetChannelService(sptr);
1237 ClearChannelService(sptr);
1240 if (what == MODE_ADD)
1251 * Evaluate rules for new user mode
1252 * Stop users making themselves operators too easily:
1254 if (!(setflags & FLAGS_OPER) && IsOper(sptr) && !IsServer(cptr))
1256 if (!(setflags & FLAGS_LOCOP) && IsLocOp(sptr) && !IsServer(cptr))
1258 #ifdef WALLOPS_OPER_ONLY
1260 * only send wallops to opers
1262 if (!IsAnOper(sptr) && !(setflags & FLAGS_WALLOP) && !IsServer(cptr))
1265 if ((setflags & (FLAGS_OPER | FLAGS_LOCOP)) && !IsAnOper(sptr) &&
1267 det_confs_butmask(sptr, CONF_CLIENT & ~CONF_OPS);
1269 * new umode; servers can set it, local users cannot;
1270 * prevents users from /kick'ing or /mode -o'ing
1272 if (!(setflags & FLAGS_CHSERV) && !IsServer(cptr))
1273 ClearChannelService(sptr);
1275 * Compare new flags with old flags and send string which
1276 * will cause servers to update correctly.
1278 if ((setflags & FLAGS_OPER) && !IsOper(sptr))
1280 if (!(setflags & FLAGS_OPER) && IsOper(sptr))
1282 if ((setflags & FLAGS_INVISIBLE) && !IsInvisible(sptr))
1283 --UserStats.inv_clients;
1284 if (!(setflags & FLAGS_INVISIBLE) && IsInvisible(sptr))
1285 ++UserStats.inv_clients;
1286 send_umode_out(cptr, sptr, setflags);
1288 if (MyConnect(sptr)) {
1289 if (tmpmask != sptr->snomask)
1290 set_snomask(sptr, tmpmask, SNO_SET);
1291 if (sptr->snomask && snomask_given)
1292 send_reply(sptr, RPL_SNOMASK, sptr->snomask, sptr->snomask);
1299 * Build umode string for BURST command
1302 char *umode_str(struct Client *cptr)
1304 char* m = umodeBuf; /* Maximum string size: "owidg\0" */
1308 c_flags = cptr->flags & SEND_UMODES; /* cleaning up the original code */
1310 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1311 if ( (c_flags & userModeList[i].flag))
1312 *m++ = userModeList[i].c;
1316 return umodeBuf; /* Note: static buffer, gets
1317 overwritten by send_umode() */
1321 * Send the MODE string for user (user) to connection cptr
1324 void send_umode(struct Client *cptr, struct Client *sptr, int old, int sendmask)
1329 int what = MODE_NULL;
1332 * Build a string in umodeBuf to represent the change in the user's
1333 * mode between the new (sptr->flag) and 'old'.
1337 for (i = 0; i < USERMODELIST_SIZE; ++i) {
1338 flag = userModeList[i].flag;
1339 if (MyUser(sptr) && !(flag & sendmask))
1341 if ( (flag & old) && !(sptr->flags & flag))
1343 if (what == MODE_DEL)
1344 *m++ = userModeList[i].c;
1349 *m++ = userModeList[i].c;
1352 else if (!(flag & old) && (sptr->flags & flag))
1354 if (what == MODE_ADD)
1355 *m++ = userModeList[i].c;
1360 *m++ = userModeList[i].c;
1365 if (*umodeBuf && cptr)
1366 sendcmdto_one(sptr, CMD_MODE, cptr, "%s :%s", sptr->name, umodeBuf);
1370 * Check to see if this resembles a sno_mask. It is if 1) there is
1371 * at least one digit and 2) The first digit occurs before the first
1372 * alphabetic character.
1374 int is_snomask(char *word)
1378 for (; *word; word++)
1381 else if (IsAlpha(*word))
1388 * If it begins with a +, count this as an additive mask instead of just
1389 * a replacement. If what == MODE_DEL, "+" has no special effect.
1391 unsigned int umode_make_snomask(unsigned int oldmask, char *arg, int what)
1393 unsigned int sno_what;
1394 unsigned int newmask;
1398 if (what == MODE_ADD)
1403 else if (*arg == '-')
1406 if (what == MODE_ADD)
1412 sno_what = (what == MODE_ADD) ? SNO_SET : SNO_DEL;
1413 /* pity we don't have strtoul everywhere */
1414 newmask = (unsigned int)atoi(arg);
1415 if (sno_what == SNO_DEL)
1416 newmask = oldmask & ~newmask;
1417 else if (sno_what == SNO_ADD)
1422 static void delfrom_list(struct Client *cptr, struct SLink **list)
1425 struct SLink* prv = NULL;
1427 for (tmp = *list; tmp; tmp = tmp->next) {
1428 if (tmp->value.cptr == cptr) {
1430 prv->next = tmp->next;
1441 * This function sets a Client's server notices mask, according to
1442 * the parameter 'what'. This could be even faster, but the code
1443 * gets mighty hard to read :)
1445 void set_snomask(struct Client *cptr, unsigned int newmask, int what)
1447 unsigned int oldmask, diffmask; /* unsigned please */
1451 oldmask = cptr->snomask;
1453 if (what == SNO_ADD)
1455 else if (what == SNO_DEL)
1456 newmask = oldmask & ~newmask;
1457 else if (what != SNO_SET) /* absolute set, no math needed */
1458 sendto_opmask_butone(0, SNO_OLDSNO, "setsnomask called with %d ?!", what);
1460 newmask &= (IsAnOper(cptr) ? SNO_ALL : SNO_USER);
1462 diffmask = oldmask ^ newmask;
1464 for (i = 0; diffmask >> i; i++) {
1465 if (((diffmask >> i) & 1))
1467 if (((newmask >> i) & 1))
1470 tmp->next = opsarray[i];
1471 tmp->value.cptr = cptr;
1475 /* not real portable :( */
1476 delfrom_list(cptr, &opsarray[i]);
1479 cptr->snomask = newmask;
1483 * is_silenced : Does the actual check wether sptr is allowed
1484 * to send a message to acptr.
1485 * Both must be registered persons.
1486 * If sptr is silenced by acptr, his message should not be propagated,
1487 * but more over, if this is detected on a server not local to sptr
1488 * the SILENCE mask is sent upstream.
1490 int is_silenced(struct Client *sptr, struct Client *acptr)
1494 static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
1495 static char senderip[16 + NICKLEN + USERLEN + 5];
1497 if (!(acptr->user) || !(lp = acptr->user->silence) || !(user = sptr->user))
1499 sprintf_irc(sender, "%s!%s@%s", sptr->name, user->username, user->host);
1500 sprintf_irc(senderip, "%s!%s@%s", sptr->name, user->username,
1501 ircd_ntoa((const char*) &sptr->ip));
1502 for (; lp; lp = lp->next)
1504 if ((!(lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, sender)) ||
1505 ((lp->flags & CHFL_SILENCE_IPMASK) && !match(lp->value.cp, senderip)))
1507 if (!MyConnect(sptr))
1509 sendcmdto_one(acptr, CMD_SILENCE, sptr->from, "%C %s", sptr,
1521 * Removes all silence masks from the list of sptr that fall within `mask'
1522 * Returns -1 if none where found, 0 otherwise.
1524 int del_silence(struct Client *sptr, char *mask)
1530 for (lp = &sptr->user->silence; *lp;) {
1531 if (!mmatch(mask, (*lp)->value.cp))
1535 MyFree(tmp->value.cp);
1545 int add_silence(struct Client* sptr, const char* mask)
1547 struct SLink *lp, **lpp;
1548 int cnt = 0, len = strlen(mask);
1551 for (lpp = &sptr->user->silence, lp = *lpp; lp;)
1553 if (0 == ircd_strcmp(mask, lp->value.cp))
1555 if (!mmatch(mask, lp->value.cp))
1557 struct SLink *tmp = lp;
1558 *lpp = lp = lp->next;
1559 MyFree(tmp->value.cp);
1565 len += strlen(lp->value.cp);
1566 if ((len > MAXSILELENGTH) || (++cnt >= MAXSILES))
1568 send_reply(sptr, ERR_SILELISTFULL, mask);
1571 else if (!mmatch(lp->value.cp, mask))
1578 memset(lp, 0, sizeof(struct SLink));
1579 lp->next = sptr->user->silence;
1580 lp->value.cp = (char*) MyMalloc(strlen(mask) + 1);
1581 assert(0 != lp->value.cp);
1582 strcpy(lp->value.cp, mask);
1583 if ((ip_start = strrchr(mask, '@')) && check_if_ipmask(ip_start + 1))
1584 lp->flags = CHFL_SILENCE_IPMASK;
1585 sptr->user->silence = lp;