/* * ircd-ratbox: A slightly useful ircd. * m_message.c: Sends a (PRIVMSG|NOTICE) message to a user or channel. * * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center * Copyright (C) 1996-2002 Hybrid Development Team * Copyright (C) 2002-2005 ircd-ratbox development team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA * */ #include "stdinc.h" #include "client.h" #include "ircd.h" #include "numeric.h" #include "common.h" #include "s_conf.h" #include "s_serv.h" #include "msg.h" #include "parse.h" #include "modules.h" #include "channel.h" #include "match.h" #include "hash.h" #include "class.h" #include "msg.h" #include "packet.h" #include "send.h" #include "s_newconf.h" #include "s_stats.h" #include "tgchange.h" #include "inline/stringops.h" #include "irc_dictionary.h" static int m_message(int, const char *, struct Client *, struct Client *, int, const char **); static int m_privmsg(struct Client *, struct Client *, int, const char **); static int m_notice(struct Client *, struct Client *, int, const char **); static void expire_tgchange(void *unused); static struct ev_entry *expire_tgchange_event; static int modinit(void) { expire_tgchange_event = rb_event_addish("expire_tgchange", expire_tgchange, NULL, 300); expire_tgchange(NULL); return 0; } static void moddeinit(void) { rb_event_delete(expire_tgchange_event); } struct Message privmsg_msgtab = { "PRIVMSG", 0, 0, 0, MFLG_SLOW | MFLG_UNREG, {mg_unreg, {m_privmsg, 0}, {m_privmsg, 0}, mg_ignore, mg_ignore, {m_privmsg, 0}} }; struct Message notice_msgtab = { "NOTICE", 0, 0, 0, MFLG_SLOW, {mg_unreg, {m_notice, 0}, {m_notice, 0}, {m_notice, 0}, mg_ignore, {m_notice, 0}} }; mapi_clist_av1 message_clist[] = { &privmsg_msgtab, ¬ice_msgtab, NULL }; DECLARE_MODULE_AV1(message, modinit, moddeinit, message_clist, NULL, NULL, "$Revision: 3173 $"); struct entity { void *ptr; int type; int flags; }; static int build_target_list(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, const char *nicks_channels, const char *text); static int flood_attack_client(int p_or_n, struct Client *source_p, struct Client *target_p); /* Fifteen seconds should be plenty for a client to reply a ctcp */ #define LARGE_CTCP_TIME 15 #define ENTITY_NONE 0 #define ENTITY_CHANNEL 1 #define ENTITY_CHANNEL_OPMOD 2 #define ENTITY_CHANOPS_ON_CHANNEL 3 #define ENTITY_CLIENT 4 static struct entity targets[512]; static int ntargets = 0; static int duplicate_ptr(void *); static void msg_channel(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, const char *text); static void msg_channel_opmod(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, const char *text); static void msg_channel_flags(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, int flags, const char *text); static void msg_client(int p_or_n, const char *command, struct Client *source_p, struct Client *target_p, const char *text); static void handle_special(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, const char *nick, const char *text); /* ** m_privmsg ** ** massive cleanup ** rev argv 6/91 ** ** Another massive cleanup Nov, 2000 ** (I don't think there is a single line left from 6/91. Maybe.) ** m_privmsg and m_notice do basically the same thing. ** in the original 2.8.2 code base, they were the same function ** "m_message.c." When we did the great cleanup in conjuncton with bleep ** of ircu fame, we split m_privmsg.c and m_notice.c. ** I don't see the point of that now. Its harder to maintain, its ** easier to introduce bugs into one version and not the other etc. ** Really, the penalty of an extra function call isn't that big a deal folks. ** -db Nov 13, 2000 ** */ #define PRIVMSG 0 #define NOTICE 1 static int m_privmsg(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { return m_message(PRIVMSG, "PRIVMSG", client_p, source_p, parc, parv); } static int m_notice(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { return m_message(NOTICE, "NOTICE", client_p, source_p, parc, parv); } /* * inputs - flag privmsg or notice * - pointer to command "PRIVMSG" or "NOTICE" * - pointer to client_p * - pointer to source_p * - pointer to channel */ static int m_message(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) { int i; if(parc < 2 || EmptyString(parv[1])) { if(p_or_n != NOTICE) sendto_one(source_p, form_str(ERR_NORECIPIENT), me.name, source_p->name, command); return 0; } if(parc < 3 || EmptyString(parv[2])) { if(p_or_n != NOTICE) sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); return 0; } /* Finish the flood grace period if theyre not messaging themselves * as some clients (ircN) do this as a "lag check" */ if(MyClient(source_p) && !IsFloodDone(source_p) && irccmp(source_p->name, parv[1])) flood_endgrace(source_p); if(build_target_list(p_or_n, command, client_p, source_p, parv[1], parv[2]) < 0) { return 0; } for(i = 0; i < ntargets; i++) { switch (targets[i].type) { case ENTITY_CHANNEL: msg_channel(p_or_n, command, client_p, source_p, (struct Channel *) targets[i].ptr, parv[2]); break; case ENTITY_CHANNEL_OPMOD: msg_channel_opmod(p_or_n, command, client_p, source_p, (struct Channel *) targets[i].ptr, parv[2]); break; case ENTITY_CHANOPS_ON_CHANNEL: msg_channel_flags(p_or_n, command, client_p, source_p, (struct Channel *) targets[i].ptr, targets[i].flags, parv[2]); break; case ENTITY_CLIENT: msg_client(p_or_n, command, source_p, (struct Client *) targets[i].ptr, parv[2]); break; } } return 0; } /* * build_target_list * * inputs - pointer to given client_p (server) * - pointer to given source (oper/client etc.) * - pointer to list of nicks/channels * - pointer to table to place results * - pointer to text (only used if source_p is an oper) * output - number of valid entities * side effects - target_table is modified to contain a list of * pointers to channels or clients * if source client is an oper * all the classic old bizzare oper privmsg tricks * are parsed and sent as is, if prefixed with $ * to disambiguate. * */ static int build_target_list(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, const char *nicks_channels, const char *text) { int type; char *p, *nick, *target_list; struct Channel *chptr = NULL; struct Client *target_p; target_list = LOCAL_COPY(nicks_channels); /* skip strcpy for non-lazyleafs */ ntargets = 0; for(nick = rb_strtok_r(target_list, ",", &p); nick; nick = rb_strtok_r(NULL, ",", &p)) { char *with_prefix; /* * channels are privmsg'd a lot more than other clients, moved up * here plain old channel msg? */ if(IsChanPrefix(*nick)) { /* ignore send of local channel to a server (should not happen) */ if(IsServer(client_p) && *nick == '&') continue; if((chptr = find_channel(nick)) != NULL) { if(!duplicate_ptr(chptr)) { if(ntargets >= ConfigFileEntry.max_targets) { sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), me.name, source_p->name, nick); return (1); } targets[ntargets].ptr = (void *) chptr; targets[ntargets++].type = ENTITY_CHANNEL; } } /* non existant channel */ else if(p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); continue; } if(MyClient(source_p)) target_p = find_named_person(nick); else target_p = find_person(nick); /* look for a privmsg to another client */ if(target_p) { if(!duplicate_ptr(target_p)) { if(ntargets >= ConfigFileEntry.max_targets) { sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), me.name, source_p->name, nick); return (1); } targets[ntargets].ptr = (void *) target_p; targets[ntargets].type = ENTITY_CLIENT; targets[ntargets++].flags = 0; } continue; } /* @#channel or +#channel message ? */ type = 0; with_prefix = nick; /* allow %+@ if someone wants to do that */ for(;;) { if(*nick == '@') type |= CHFL_CHANOP; else if(*nick == '+') type |= CHFL_CHANOP | CHFL_VOICE; else break; nick++; } if(type != 0) { /* no recipient.. */ if(EmptyString(nick)) { sendto_one(source_p, form_str(ERR_NORECIPIENT), me.name, source_p->name, command); continue; } /* At this point, nick+1 should be a channel name i.e. #foo or &foo * if the channel is found, fine, if not report an error */ if((chptr = find_channel(nick)) != NULL) { struct membership *msptr; msptr = find_channel_membership(chptr, source_p); if(!IsServer(source_p) && !IsService(source_p) && !is_chanop_voiced(msptr)) { sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), get_id(&me, source_p), get_id(source_p, source_p), with_prefix); return (-1); } if(!duplicate_ptr(chptr)) { if(ntargets >= ConfigFileEntry.max_targets) { sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), me.name, source_p->name, nick); return (1); } targets[ntargets].ptr = (void *) chptr; targets[ntargets].type = ENTITY_CHANOPS_ON_CHANNEL; targets[ntargets++].flags = type; } } else if(p_or_n != NOTICE) { sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); } continue; } if(IsServer(client_p) && *nick == '=' && nick[1] == '#') { nick++; if((chptr = find_channel(nick)) != NULL) { if(!duplicate_ptr(chptr)) { if(ntargets >= ConfigFileEntry.max_targets) { sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), me.name, source_p->name, nick); return (1); } targets[ntargets].ptr = (void *) chptr; targets[ntargets++].type = ENTITY_CHANNEL_OPMOD; } } /* non existant channel */ else if(p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); continue; } if(strchr(nick, '@') || (IsOper(source_p) && (*nick == '$'))) { handle_special(p_or_n, command, client_p, source_p, nick, text); continue; } /* no matching anything found - error if not NOTICE */ if(p_or_n != NOTICE) { /* dont give this numeric when source is local, * because its misleading --anfl */ if(!MyClient(source_p) && IsDigit(*nick)) sendto_one(source_p, ":%s %d %s * :Target left IRC. " "Failed to deliver: [%.20s]", get_id(&me, source_p), ERR_NOSUCHNICK, get_id(source_p, source_p), text); else sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); } } return (1); } /* * duplicate_ptr * * inputs - pointer to check * - pointer to table of entities * - number of valid entities so far * output - YES if duplicate pointer in table, NO if not. * note, this does the canonize using pointers * side effects - NONE */ static int duplicate_ptr(void *ptr) { int i; for(i = 0; i < ntargets; i++) if(targets[i].ptr == ptr) return YES; return NO; } /* * msg_channel * * inputs - flag privmsg or notice * - pointer to command "PRIVMSG" or "NOTICE" * - pointer to client_p * - pointer to source_p * - pointer to channel * output - NONE * side effects - message given channel * * XXX - We need to rework this a bit, it's a tad ugly. --nenolod */ static void msg_channel(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, const char *text) { int result; char text2[BUFSIZE]; size_t contor; int caps = 0; int len = 0; struct membership *msptr = find_channel_membership(chptr, source_p); struct Metadata *md; if(MyClient(source_p)) { /* idle time shouldnt be reset by notices --fl */ if(p_or_n != NOTICE) source_p->localClient->last = rb_current_time(); } if(chptr->mode.mode & MODE_NOREPEAT) { rb_strlcpy(text2, text, BUFSIZE); strip_unprintable(text2); md = channel_metadata_find(chptr, "NOREPEAT"); if(md && (!ConfigChannel.exempt_cmode_K || !is_any_op(msptr))) { if(!(strcmp(md->value, text2))) { if(p_or_n != NOTICE) sendto_one_numeric(source_p, 404, "%s :Cannot send to channel - Message blocked due to repeating (+K set)", chptr->chname); return; } } channel_metadata_delete(chptr, "NOREPEAT", 0); channel_metadata_add(chptr, "NOREPEAT", text2, 0); } // Must be processed before chmode c --SnoFox if (strlen(text) > 10 && chptr->mode.mode & MODE_NOCAPS && (!ConfigChannel.exempt_cmode_G || !is_any_op(msptr))) { rb_strlcpy(text2, text, BUFSIZE); strip_unprintable(text2); // Don't count the "ACTION" part of action as part of the message --SnoFox if (p_or_n != NOTICE && *text == '\001' && !strncasecmp(text + 1, "ACTION ", 7)) { contor = 7; } else { contor = 0; } for(; contor < strlen(text2); contor++) { if(IsUpper(text2[contor]) && !isdigit(text2[contor])) caps++; len++; } /* Added divide by 0 check --alxbl */ if(len != 0 && ((caps*100)/(len)) >= 50) { sendto_one_numeric(source_p, 404, "%s :Cannot send to channel - Your message contains mostly capital letters (+G set)", chptr->chname); return; } } if(chptr->mode.mode & MODE_NOCOLOR && (!ConfigChannel.exempt_cmode_c || !is_any_op(msptr))) { rb_strlcpy(text2, text, BUFSIZE); strip_colour(text2); text = text2; if (EmptyString(text)) { /* could be empty after colour stripping and * that would cause problems later */ if(p_or_n != NOTICE) sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); return; } } /* chanops and voiced can flood their own channel with impunity */ if((result = can_send(chptr, source_p, NULL))) { if(result != CAN_SEND_OPV && MyClient(source_p) && !IsOper(source_p) && !add_channel_target(source_p, chptr)) { sendto_one(source_p, form_str(ERR_TARGCHANGE), me.name, source_p->name, chptr->chname); return; } if(result == CAN_SEND_OPV || !flood_attack_channel(p_or_n, source_p, chptr, chptr->chname)) { if (p_or_n != PRIVMSG && chptr->mode.mode & MODE_NONOTICE && (!ConfigChannel.exempt_cmode_T || !is_any_op(msptr))) { sendto_one_numeric(source_p, 404, "%s :Cannot send to channel - Notices are disallowed (+T set)", chptr->chname); return; } if (p_or_n != NOTICE && chptr->mode.mode & MODE_NOACTION && !strncasecmp(text + 1, "ACTION", 6) && (!ConfigChannel.exempt_cmode_D || !is_any_op(msptr))) { sendto_one_numeric(source_p, 404, "%s :Cannot send to channel - ACTIONs are disallowed (+D set)", chptr->chname); return; } if (p_or_n != NOTICE && *text == '\001' && strncasecmp(text + 1, "ACTION ", 7)) { if (chptr->mode.mode & MODE_NOCTCP && (!ConfigChannel.exempt_cmode_C || !is_any_op(msptr))) { sendto_one_numeric(source_p, 404, "%s :Cannot send to channel - CTCPs to this channel are disallowed (+C set)", chptr->chname); return; } else if (rb_dlink_list_length(&chptr->locmembers) > (unsigned)(GlobalSetOptions.floodcount / 2)) source_p->large_ctcp_sent = rb_current_time(); } sendto_channel_flags(client_p, ALL_MEMBERS, source_p, chptr, "%s %s :%s", command, chptr->chname, text); } } else if(chptr->mode.mode & MODE_OPMODERATE && (!(chptr->mode.mode & MODE_NOPRIVMSGS) || IsMember(source_p, chptr))) { if(MyClient(source_p) && !IsOper(source_p) && !add_channel_target(source_p, chptr)) { sendto_one(source_p, form_str(ERR_TARGCHANGE), me.name, source_p->name, chptr->chname); return; } if(!flood_attack_channel(p_or_n, source_p, chptr, chptr->chname)) { sendto_channel_opmod(client_p, source_p, chptr, command, text); } } else { if(p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), chptr->chname); } } /* * msg_channel_opmod * * inputs - flag privmsg or notice * - pointer to command "PRIVMSG" or "NOTICE" * - pointer to client_p * - pointer to source_p * - pointer to channel * output - NONE * side effects - message given channel ops * * XXX - We need to rework this a bit, it's a tad ugly. --nenolod */ static void msg_channel_opmod(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, const char *text) { char text2[BUFSIZE]; if(chptr->mode.mode & MODE_NOCOLOR) { rb_strlcpy(text2, text, BUFSIZE); strip_colour(text2); text = text2; if (EmptyString(text)) { /* could be empty after colour stripping and * that would cause problems later */ if(p_or_n != NOTICE) sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), me.name, source_p->name); return; } } if(chptr->mode.mode & MODE_OPMODERATE && (!(chptr->mode.mode & MODE_NOPRIVMSGS) || IsMember(source_p, chptr))) { if(!flood_attack_channel(p_or_n, source_p, chptr, chptr->chname)) { sendto_channel_opmod(client_p, source_p, chptr, command, text); } } else { if(p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN), chptr->chname); } } /* * msg_channel_flags * * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC * say NOTICE must not auto reply * - pointer to command, "PRIVMSG" or "NOTICE" * - pointer to client_p * - pointer to source_p * - pointer to channel * - flags * - pointer to text to send * output - NONE * side effects - message given channel either chanop or voice */ static void msg_channel_flags(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, struct Channel *chptr, int flags, const char *text) { int type; char c; if(flags & CHFL_VOICE) { type = ONLY_CHANOPSVOICED; c = '+'; } else { type = ONLY_CHANOPS; c = '@'; } if(MyClient(source_p)) { /* idletime shouldnt be reset by notice --fl */ if(p_or_n != NOTICE) source_p->localClient->last = rb_current_time(); } sendto_channel_flags(client_p, type, source_p, chptr, "%s %c%s :%s", command, c, chptr->chname, text); } static void expire_tgchange(void *unused) { tgchange *target; rb_dlink_node *ptr, *next_ptr; RB_DLINK_FOREACH_SAFE(ptr, next_ptr, tgchange_list.head) { target = ptr->data; if(target->expiry < rb_current_time()) { rb_dlinkDelete(ptr, &tgchange_list); rb_patricia_remove(tgchange_tree, target->pnode); rb_free(target->ip); rb_free(target); } } } /* * msg_client * * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC * say NOTICE must not auto reply * - pointer to command, "PRIVMSG" or "NOTICE" * - pointer to source_p source (struct Client *) * - pointer to target_p target (struct Client *) * - pointer to text * output - NONE * side effects - message given channel either chanop or voice */ static void msg_client(int p_or_n, const char *command, struct Client *source_p, struct Client *target_p, const char *text) { int do_floodcount = 0; struct Metadata *md; struct DictionaryIter iter; int oaccept = 0; char text3[10]; if(MyClient(source_p)) { /* * XXX: Controversial? Allow target users to send replies * through a +g. Rationale is that people can presently use +g * as a way to taunt users, e.g. harass them and hide behind +g * as a way of griefing. --nenolod */ if(p_or_n != NOTICE && MyClient(source_p) && IsSetCallerId(source_p) && IsSetSCallerId(source_p) && !accept_message(target_p, source_p)) { if(rb_dlink_list_length(&source_p->localClient->allow_list) < ConfigFileEntry.max_accept) { rb_dlinkAddAlloc(target_p, &source_p->localClient->allow_list); rb_dlinkAddAlloc(source_p, &target_p->on_allow_list); } else { sendto_one_numeric(source_p, ERR_OWNMODE, form_str(ERR_OWNMODE), target_p->name, "+g"); return; } } /* reset idle time for message only if its not to self * and its not a notice */ if(p_or_n != NOTICE) source_p->localClient->last = rb_current_time(); /* auto cprivmsg/cnotice */ do_floodcount = !IsOper(source_p) && !find_allowing_channel(source_p, target_p); /* target change stuff, dont limit ctcp replies as that * would allow people to start filling up random users * targets just by ctcping them */ if((p_or_n != NOTICE || *text != '\001') && ConfigFileEntry.target_change && do_floodcount) { if(!add_target(source_p, target_p)) { sendto_one(source_p, form_str(ERR_TARGCHANGE), me.name, source_p->name, target_p->name); return; } } if (do_floodcount && p_or_n == NOTICE && *text == '\001' && target_p->large_ctcp_sent + LARGE_CTCP_TIME >= rb_current_time()) do_floodcount = 0; if (do_floodcount && flood_attack_client(p_or_n, source_p, target_p)) return; } else if(source_p->from == target_p->from) { sendto_realops_snomask(SNO_DEBUG, L_ALL, "Send message to %s[%s] dropped from %s(Fake Dir)", target_p->name, target_p->from->name, source_p->name); return; } if(MyConnect(source_p) && (p_or_n != NOTICE) && target_p->user && target_p->user->away) sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY), target_p->name, target_p->user->away); if(MyClient(target_p)) { if (IsSetNoCTCP(target_p) && p_or_n != NOTICE && *text == '\001' && strncasecmp(text + 1, "ACTION", 6)) { sendto_one_numeric(source_p, ERR_NOCTCP, form_str(ERR_NOCTCP), target_p->name); } /* If opers want to go through +g, they should load oaccept.*/ else if(!IsServer(source_p) && !IsService(source_p) && (IsSetCallerId(target_p) || (IsSetSCallerId(target_p) && !has_common_channel(source_p, target_p)) || (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0]))) { if (IsOper(source_p)) { snprintf(text3, sizeof(text3), "O%s", source_p->id); DICTIONARY_FOREACH(md, &iter, target_p->user->metadata) { if(!strcmp(md->value, "OACCEPT") && !strcmp(md->name, text3)) { oaccept = 1; break; } } } /* Here is the anti-flood bot/spambot code -db */ if(accept_message(source_p, target_p) || oaccept) { add_reply_target(target_p, source_p); sendto_one(target_p, ":%s!%s@%s %s %s :%s", source_p->name, source_p->username, source_p->host, command, target_p->name, text); } else if (IsSetRegOnlyMsg(target_p) && !source_p->user->suser[0]) { if (p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_NONONREG, form_str(ERR_NONONREG), target_p->name); } else if (IsSetSCallerId(target_p) && !has_common_channel(source_p, target_p)) { if (p_or_n != NOTICE) sendto_one_numeric(source_p, ERR_NOCOMMONCHAN, form_str(ERR_NOCOMMONCHAN), target_p->name); } else { /* check for accept, flag recipient incoming message */ if(p_or_n != NOTICE) { sendto_one_numeric(source_p, ERR_TARGUMODEG, form_str(ERR_TARGUMODEG), target_p->name); } if((target_p->localClient->last_caller_id_time + ConfigFileEntry.caller_id_wait) < rb_current_time()) { if(p_or_n != NOTICE) sendto_one_numeric(source_p, RPL_TARGNOTIFY, form_str(RPL_TARGNOTIFY), target_p->name); add_reply_target(target_p, source_p); sendto_one(target_p, form_str(RPL_UMODEGMSG), me.name, target_p->name, source_p->name, source_p->username, source_p->host); target_p->localClient->last_caller_id_time = rb_current_time(); } } } else { add_reply_target(target_p, source_p); sendto_anywhere(target_p, source_p, command, ":%s", text); } } else sendto_anywhere(target_p, source_p, command, ":%s", text); return; } /* * flood_attack_client * inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC * say NOTICE must not auto reply * - pointer to source Client * - pointer to target Client * output - 1 if target is under flood attack * side effects - check for flood attack on target target_p */ static int flood_attack_client(int p_or_n, struct Client *source_p, struct Client *target_p) { int delta; /* Services could get many messages legitimately and * can be messaged without rate limiting via aliases * and msg user@server. * -- jilles */ if(GlobalSetOptions.floodcount && IsClient(source_p) && source_p != target_p && !IsService(target_p) && (!IsOper(source_p) || !ConfigFileEntry.true_no_oper_flood)) { if((target_p->first_received_message_time + 1) < rb_current_time()) { delta = rb_current_time() - target_p->first_received_message_time; target_p->received_number_of_privmsgs -= delta; target_p->first_received_message_time = rb_current_time(); if(target_p->received_number_of_privmsgs <= 0) { target_p->received_number_of_privmsgs = 0; target_p->flood_noticed = 0; } } if((target_p->received_number_of_privmsgs >= GlobalSetOptions.floodcount) || target_p->flood_noticed) { if(target_p->flood_noticed == 0) { sendto_realops_snomask(SNO_BOTS, L_NETWIDE, "Possible Flooder %s[%s@%s] on %s target: %s", source_p->name, source_p->username, source_p->orighost, source_p->servptr->name, target_p->name); sendto_server(NULL, NULL, CAP_TS6, NOCAPS, ":%s ENCAP * SNOTE b :Possible Flooder %s[%s@%s] on %s target: %s", me.id, source_p->name, source_p->username, source_p->orighost, source_p->servptr->name, target_p->name); target_p->flood_noticed = 1; /* add a bit of penalty */ target_p->received_number_of_privmsgs += 2; } if(MyClient(source_p) && (p_or_n != NOTICE)) sendto_one(source_p, ":%s NOTICE %s :*** Message to %s throttled due to flooding", me.name, source_p->name, target_p->name); return 1; } else target_p->received_number_of_privmsgs++; } return 0; } /* * handle_special * * inputs - server pointer * - client pointer * - nick stuff to grok for opers * - text to send if grok * output - none * side effects - all the traditional oper type messages are parsed here. * i.e. "/msg #some.host." * However, syntax has been changed. * previous syntax "/msg #some.host.mask" * now becomes "/msg $#some.host.mask" * previous syntax of: "/msg $some.server.mask" remains * This disambiguates the syntax. */ static void handle_special(int p_or_n, const char *command, struct Client *client_p, struct Client *source_p, const char *nick, const char *text) { struct Client *target_p; char *server; char *s; /* user[%host]@server addressed? * NOTE: users can send to user@server, but not user%host@server * or opers@server */ if((server = strchr(nick, '@')) != NULL) { if((target_p = find_server(source_p, server + 1)) == NULL) { sendto_one_numeric(source_p, ERR_NOSUCHSERVER, form_str(ERR_NOSUCHSERVER), server + 1); return; } if(!IsOper(source_p)) { if(strchr(nick, '%') || (strncmp(nick, "opers", 5) == 0)) { sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); return; } } /* somewhere else.. */ if(!IsMe(target_p)) { sendto_one(target_p, ":%s %s %s :%s", get_id(source_p, target_p), command, nick, text); return; } /* Check if someones msg'ing opers@our.server */ if(strncmp(nick, "opers@", 6) == 0) { sendto_realops_snomask(SNO_GENERAL, L_ALL, "To opers: From: %s: %s", source_p->name, text); return; } /* This was not very useful except for bypassing certain * restrictions. Note that we still allow sending to * remote servers this way, for messaging pseudoservers * securely whether they have a service{} block or not. * -- jilles */ sendto_one_numeric(source_p, ERR_NOSUCHNICK, form_str(ERR_NOSUCHNICK), nick); return; } /* * the following two cases allow masks in NOTICEs * (for OPERs only) * * Armin, 8Jun90 (gruner@informatik.tu-muenchen.de) */ if(IsOper(source_p) && *nick == '$') { if((*(nick + 1) == '$' || *(nick + 1) == '#')) nick++; else if(MyOper(source_p)) { sendto_one(source_p, ":%s NOTICE %s :The command %s %s is no longer supported, please use $%s", me.name, source_p->name, command, nick, nick); return; } if(MyClient(source_p) && !IsOperMassNotice(source_p)) { sendto_one(source_p, form_str(ERR_NOPRIVS), me.name, source_p->name, "mass_notice"); return; } if((s = strrchr(nick, '.')) == NULL) { sendto_one_numeric(source_p, ERR_NOTOPLEVEL, form_str(ERR_NOTOPLEVEL), nick); return; } while(*++s) if(*s == '.' || *s == '*' || *s == '?') break; if(*s == '*' || *s == '?') { sendto_one_numeric(source_p, ERR_WILDTOPLEVEL, form_str(ERR_WILDTOPLEVEL), nick); return; } sendto_match_butone(IsServer(client_p) ? client_p : NULL, source_p, nick + 1, (*nick == '#') ? MATCH_HOST : MATCH_SERVER, "%s $%s :%s", command, nick, text); if (p_or_n != NOTICE && *text == '\001') source_p->large_ctcp_sent = rb_current_time(); return; } }