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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
3 |
* |
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* Copyright (c) 1997-2015 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file user.c |
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* \brief User related functions. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "list.h" |
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#include "user.h" |
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#include "channel.h" |
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#include "channel_mode.h" |
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#include "client.h" |
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#include "hash.h" |
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#include "id.h" |
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#include "irc_string.h" |
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#include "ircd.h" |
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#include "listener.h" |
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#include "motd.h" |
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#include "numeric.h" |
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#include "conf.h" |
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#include "log.h" |
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#include "server.h" |
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#include "send.h" |
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#include "memory.h" |
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#include "packet.h" |
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#include "rng_mt.h" |
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#include "userhost.h" |
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#include "misc.h" |
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#include "parse.h" |
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#include "watch.h" |
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#include "isupport.h" |
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|
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static char umode_buffer[IRCD_BUFSIZE]; |
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|
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const struct user_modes *umode_map[256]; |
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const struct user_modes umode_tab[] = |
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{ |
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{ 'D', UMODE_DEAF }, |
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{ 'F', UMODE_FARCONNECT }, |
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{ 'G', UMODE_SOFTCALLERID }, |
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{ 'H', UMODE_HIDDEN }, |
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{ 'R', UMODE_REGONLY }, |
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{ 'S', UMODE_SSL }, |
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{ 'W', UMODE_WEBIRC }, |
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{ 'a', UMODE_ADMIN }, |
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{ 'b', UMODE_BOTS }, |
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{ 'c', UMODE_CCONN }, |
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{ 'd', UMODE_DEBUG }, |
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{ 'e', UMODE_EXTERNAL }, |
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{ 'f', UMODE_FULL }, |
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{ 'g', UMODE_CALLERID }, |
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{ 'i', UMODE_INVISIBLE }, |
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{ 'j', UMODE_REJ }, |
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{ 'k', UMODE_SKILL }, |
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{ 'l', UMODE_LOCOPS }, |
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{ 'n', UMODE_NCHANGE }, |
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{ 'o', UMODE_OPER }, |
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{ 'p', UMODE_HIDECHANS }, |
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{ 'q', UMODE_HIDEIDLE }, |
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{ 'r', UMODE_REGISTERED }, |
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{ 's', UMODE_SERVNOTICE }, |
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{ 'u', UMODE_UNAUTH }, |
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{ 'w', UMODE_WALLOP }, |
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{ 'x', UMODE_HIDDENHOST }, |
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{ 'y', UMODE_SPY }, |
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{ '\0', 0 } |
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}; |
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|
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void |
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user_modes_init(void) |
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{ |
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char *umode_buffer_ptr = umode_buffer; |
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|
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for (const struct user_modes *tab = umode_tab; tab->c; ++tab) |
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{ |
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umode_map[tab->c] = tab; |
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*umode_buffer_ptr++ = tab->c; |
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} |
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|
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*umode_buffer_ptr = '\0'; |
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} |
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|
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/* show_lusers() |
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* |
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* inputs - pointer to client |
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* output - NONE |
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* side effects - display to client user counts etc. |
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*/ |
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void |
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show_lusers(struct Client *source_p) |
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{ |
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if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER)) |
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sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT, (Count.total - Count.invisi), |
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Count.invisi, dlink_list_length(&global_server_list)); |
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else |
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sendto_one_numeric(source_p, &me, RPL_LUSERCLIENT, (Count.total - Count.invisi), |
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Count.invisi, 1); |
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|
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if (Count.oper) |
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sendto_one_numeric(source_p, &me, RPL_LUSEROP, Count.oper); |
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|
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if (dlink_list_length(&unknown_list)) |
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sendto_one_numeric(source_p, &me, RPL_LUSERUNKNOWN, dlink_list_length(&unknown_list)); |
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|
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if (dlink_list_length(&channel_list)) |
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sendto_one_numeric(source_p, &me, RPL_LUSERCHANNELS, dlink_list_length(&channel_list)); |
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|
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if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER)) |
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{ |
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sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.local, Count.myserver); |
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sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.local, Count.max_loc); |
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} |
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else |
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{ |
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sendto_one_numeric(source_p, &me, RPL_LUSERME, Count.total, 0); |
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sendto_one_numeric(source_p, &me, RPL_LOCALUSERS, Count.total, Count.max_tot); |
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} |
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|
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sendto_one_numeric(source_p, &me, RPL_GLOBALUSERS, Count.total, Count.max_tot); |
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|
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if (!ConfigServerHide.hide_servers || HasUMode(source_p, UMODE_OPER)) |
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sendto_one_numeric(source_p, &me, RPL_STATSCONN, Count.max_loc_con, |
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Count.max_loc_cli, Count.totalrestartcount); |
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|
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if (Count.local > Count.max_loc_cli) |
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Count.max_loc_cli = Count.local; |
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|
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if ((Count.local + Count.myserver) > Count.max_loc_con) |
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Count.max_loc_con = Count.local + Count.myserver; |
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} |
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|
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/* report_and_set_user_flags() |
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* |
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* inputs - pointer to source_p |
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* - pointer to conf for this user |
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* output - NONE |
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* side effects - Report to user any special flags |
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* they are getting, and set them. |
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*/ |
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static void |
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report_and_set_user_flags(struct Client *source_p, const struct MaskItem *conf) |
162 |
{ |
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/* If this user is being spoofed, tell them so */ |
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if (IsConfDoSpoofIp(conf)) |
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sendto_one_notice(source_p, &me, ":*** Spoofing your IP. Congrats."); |
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|
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/* If this user is in the exception class, set it "E lined" */ |
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if (IsConfExemptKline(conf)) |
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{ |
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AddFlag(source_p, FLAGS_EXEMPTKLINE); |
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sendto_one_notice(source_p, &me, ":*** You are exempt from K/D lines. Congrats."); |
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} |
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|
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if (IsConfExemptXline(conf)) |
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{ |
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AddFlag(source_p, FLAGS_EXEMPTXLINE); |
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sendto_one_notice(source_p, &me, ":*** You are exempt from X lines. Congrats."); |
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} |
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|
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if (IsConfExemptResv(conf)) |
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{ |
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AddFlag(source_p, FLAGS_EXEMPTRESV); |
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sendto_one_notice(source_p, &me, ":*** You are exempt from resvs. Congrats."); |
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} |
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|
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/* If this user is exempt from user limits set it "F lined" */ |
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if (IsConfExemptLimits(conf)) |
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{ |
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AddFlag(source_p, FLAGS_NOLIMIT); |
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sendto_one_notice(source_p, &me, ":*** You are exempt from user limits. Congrats."); |
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} |
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|
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if (IsConfCanFlood(conf)) |
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{ |
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AddFlag(source_p, FLAGS_CANFLOOD); |
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sendto_one_notice(source_p, &me, ":*** You are exempt from flood " |
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"protection, aren't you fearsome."); |
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} |
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} |
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|
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/* introduce_client() |
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* |
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* inputs - source_p |
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* output - NONE |
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* side effects - This common function introduces a client to the rest |
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* of the net, either from a local client connect or |
207 |
* from a remote connect. |
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*/ |
209 |
static void |
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introduce_client(struct Client *source_p) |
211 |
{ |
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dlink_node *node = NULL; |
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char ubuf[IRCD_BUFSIZE] = ""; |
214 |
|
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if (MyClient(source_p)) |
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send_umode(source_p, source_p, 0, ubuf); |
217 |
else |
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send_umode(NULL, source_p, 0, ubuf); |
219 |
|
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watch_check_hash(source_p, RPL_LOGON); |
221 |
|
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if (ubuf[0] == '\0') |
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{ |
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ubuf[0] = '+'; |
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ubuf[1] = '\0'; |
226 |
} |
227 |
|
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DLINK_FOREACH(node, local_server_list.head) |
229 |
{ |
230 |
struct Client *server = node->data; |
231 |
|
232 |
if (server == source_p->from) |
233 |
continue; |
234 |
|
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if (IsCapable(server, CAPAB_SVS)) |
236 |
sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s %s :%s", |
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source_p->servptr->id, |
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source_p->name, source_p->hopcount+1, |
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(unsigned long)source_p->tsinfo, |
240 |
ubuf, source_p->username, source_p->host, |
241 |
source_p->sockhost, source_p->id, |
242 |
source_p->account, |
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source_p->info); |
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else |
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sendto_one(server, ":%s UID %s %u %lu %s %s %s %s %s :%s", |
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source_p->servptr->id, |
247 |
source_p->name, source_p->hopcount+1, |
248 |
(unsigned long)source_p->tsinfo, |
249 |
ubuf, source_p->username, source_p->host, |
250 |
source_p->sockhost, source_p->id, source_p->info); |
251 |
|
252 |
if (!EmptyString(source_p->certfp)) |
253 |
sendto_one(server, ":%s CERTFP %s", source_p->id, source_p->certfp); |
254 |
} |
255 |
} |
256 |
|
257 |
/* user_welcome() |
258 |
* |
259 |
* inputs - client pointer to client to welcome |
260 |
* output - NONE |
261 |
* side effects - |
262 |
*/ |
263 |
static void |
264 |
user_welcome(struct Client *source_p) |
265 |
{ |
266 |
static const char built_date[] = __DATE__ " at " __TIME__; |
267 |
|
268 |
#ifdef HAVE_LIBCRYPTO |
269 |
if (HasFlag(source_p, FLAGS_SSL)) |
270 |
{ |
271 |
AddUMode(source_p, UMODE_SSL); |
272 |
sendto_one_notice(source_p, &me, ":*** Connected securely via %s", |
273 |
ssl_get_cipher(source_p->connection->fd.ssl)); |
274 |
} |
275 |
#endif |
276 |
|
277 |
sendto_one_numeric(source_p, &me, RPL_WELCOME, ConfigServerInfo.network_name, |
278 |
source_p->name); |
279 |
sendto_one_numeric(source_p, &me, RPL_YOURHOST, |
280 |
listener_get_name(source_p->connection->listener), ircd_version); |
281 |
sendto_one_numeric(source_p, &me, RPL_CREATED, built_date); |
282 |
sendto_one_numeric(source_p, &me, RPL_MYINFO, me.name, ircd_version, umode_buffer); |
283 |
|
284 |
isupport_show(source_p); |
285 |
show_lusers(source_p); |
286 |
motd_signon(source_p); |
287 |
} |
288 |
|
289 |
/* check_xline() |
290 |
* |
291 |
* inputs - pointer to client to test |
292 |
* outupt - 1 if exiting 0 if ok |
293 |
* side effects - |
294 |
*/ |
295 |
static int |
296 |
check_xline(struct Client *source_p) |
297 |
{ |
298 |
struct MaskItem *conf = NULL; |
299 |
|
300 |
if (HasFlag(source_p, FLAGS_EXEMPTXLINE)) |
301 |
return 0; |
302 |
|
303 |
if ((conf = find_matching_name_conf(CONF_XLINE, source_p->info, NULL, NULL, 0))) |
304 |
{ |
305 |
++conf->count; |
306 |
sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE, |
307 |
"X-line Rejecting [%s] [%s], user %s [%s]", |
308 |
source_p->info, conf->reason, |
309 |
get_client_name(source_p, HIDE_IP), |
310 |
source_p->sockhost); |
311 |
|
312 |
++ServerStats.is_ref; |
313 |
exit_client(source_p, "Bad user info"); |
314 |
return 1; |
315 |
} |
316 |
|
317 |
return 0; |
318 |
} |
319 |
|
320 |
/*! \brief This function is called when both NICK and USER messages |
321 |
* have been accepted for the client, in whatever order. Only |
322 |
* after this, is the UID message propagated. |
323 |
* \param source_p Pointer to given client to introduce |
324 |
*/ |
325 |
void |
326 |
register_local_user(struct Client *source_p) |
327 |
{ |
328 |
const char *id = NULL; |
329 |
const struct MaskItem *conf = NULL; |
330 |
|
331 |
assert(source_p == source_p->from); |
332 |
assert(MyConnect(source_p)); |
333 |
assert(IsUnknown(source_p)); |
334 |
assert(!source_p->connection->registration); |
335 |
|
336 |
if (ConfigGeneral.ping_cookie) |
337 |
{ |
338 |
if (!HasFlag(source_p, FLAGS_PINGSENT) && !source_p->connection->random_ping) |
339 |
{ |
340 |
do |
341 |
source_p->connection->random_ping = genrand_int32(); |
342 |
while (!source_p->connection->random_ping); |
343 |
|
344 |
sendto_one(source_p, "PING :%u", source_p->connection->random_ping); |
345 |
AddFlag(source_p, FLAGS_PINGSENT); |
346 |
return; |
347 |
} |
348 |
|
349 |
if (!HasFlag(source_p, FLAGS_PING_COOKIE)) |
350 |
return; |
351 |
} |
352 |
|
353 |
source_p->connection->last_privmsg = CurrentTime; |
354 |
/* Straight up the maximum rate of flooding... */ |
355 |
source_p->connection->allow_read = MAX_FLOOD_BURST; |
356 |
|
357 |
if (!check_client(source_p)) |
358 |
return; |
359 |
|
360 |
if (!valid_hostname(source_p->host)) |
361 |
{ |
362 |
sendto_one_notice(source_p, &me, ":*** Notice -- You have an illegal " |
363 |
"character in your hostname"); |
364 |
strlcpy(source_p->host, source_p->sockhost, sizeof(source_p->host)); |
365 |
} |
366 |
|
367 |
conf = source_p->connection->confs.head->data; |
368 |
|
369 |
if (!HasFlag(source_p, FLAGS_GOTID)) |
370 |
{ |
371 |
char username[USERLEN + 1] = ""; |
372 |
unsigned int i = 0; |
373 |
|
374 |
if (IsNeedIdentd(conf)) |
375 |
{ |
376 |
++ServerStats.is_ref; |
377 |
sendto_one_notice(source_p, &me, ":*** Notice -- You need to install " |
378 |
"identd to use this server"); |
379 |
exit_client(source_p, "Install identd"); |
380 |
return; |
381 |
} |
382 |
|
383 |
strlcpy(username, source_p->username, sizeof(username)); |
384 |
|
385 |
if (!IsNoTilde(conf)) |
386 |
source_p->username[i++] = '~'; |
387 |
|
388 |
for (const char *p = username; *p && i < USERLEN; ++p) |
389 |
source_p->username[i++] = *p; |
390 |
|
391 |
source_p->username[i] = '\0'; |
392 |
} |
393 |
|
394 |
/* Password check */ |
395 |
if (!EmptyString(conf->passwd)) |
396 |
{ |
397 |
if (!match_conf_password(source_p->connection->password, conf)) |
398 |
{ |
399 |
++ServerStats.is_ref; |
400 |
|
401 |
sendto_one_numeric(source_p, &me, ERR_PASSWDMISMATCH); |
402 |
exit_client(source_p, "Bad Password"); |
403 |
return; |
404 |
} |
405 |
} |
406 |
|
407 |
/* |
408 |
* Don't free source_p->connection->password here - it can be required |
409 |
* by masked /stats I if there are auth {} blocks with need_password = no; |
410 |
* --adx |
411 |
*/ |
412 |
|
413 |
/* |
414 |
* Report if user has &^>= etc. and set flags as needed in source_p |
415 |
*/ |
416 |
report_and_set_user_flags(source_p, conf); |
417 |
|
418 |
if (IsDead(source_p)) |
419 |
return; |
420 |
|
421 |
/* |
422 |
* Limit clients - |
423 |
* We want to be able to have servers and F-line clients |
424 |
* connect, so save room for "buffer" connections. |
425 |
* Smaller servers may want to decrease this, and it should |
426 |
* probably be just a percentage of the MAXCLIENTS... |
427 |
* -Taner |
428 |
*/ |
429 |
if ((Count.local >= GlobalSetOptions.maxclients + MAX_BUFFER) || |
430 |
(Count.local >= GlobalSetOptions.maxclients && !HasFlag(source_p, FLAGS_NOLIMIT))) |
431 |
{ |
432 |
sendto_realops_flags(UMODE_FULL, L_ALL, SEND_NOTICE, |
433 |
"Too many clients, rejecting %s[%s].", |
434 |
source_p->name, source_p->host); |
435 |
++ServerStats.is_ref; |
436 |
exit_client(source_p, "Sorry, server is full - try later"); |
437 |
return; |
438 |
} |
439 |
|
440 |
if (!valid_username(source_p->username, 1)) |
441 |
{ |
442 |
char buf[IRCD_BUFSIZE] = ""; |
443 |
|
444 |
sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE, |
445 |
"Invalid username: %s (%s@%s)", |
446 |
source_p->name, source_p->username, source_p->host); |
447 |
++ServerStats.is_ref; |
448 |
snprintf(buf, sizeof(buf), "Invalid username [%s]", source_p->username); |
449 |
exit_client(source_p, buf); |
450 |
return; |
451 |
} |
452 |
|
453 |
if (check_xline(source_p)) |
454 |
return; |
455 |
|
456 |
while (hash_find_id((id = uid_get()))) |
457 |
; |
458 |
|
459 |
strlcpy(source_p->id, id, sizeof(source_p->id)); |
460 |
hash_add_id(source_p); |
461 |
|
462 |
sendto_realops_flags(UMODE_CCONN, L_ALL, SEND_NOTICE, |
463 |
"Client connecting: %s (%s@%s) [%s] {%s} [%s] <%s>", |
464 |
source_p->name, source_p->username, source_p->host, |
465 |
source_p->sockhost, |
466 |
get_client_class(&source_p->connection->confs), |
467 |
source_p->info, source_p->id); |
468 |
|
469 |
if (ConfigGeneral.invisible_on_connect) |
470 |
{ |
471 |
AddUMode(source_p, UMODE_INVISIBLE); |
472 |
++Count.invisi; |
473 |
} |
474 |
|
475 |
if (++Count.local > Count.max_loc) |
476 |
{ |
477 |
Count.max_loc = Count.local; |
478 |
|
479 |
if (!(Count.max_loc % 10)) |
480 |
sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, |
481 |
"New maximum local client connections: %u", |
482 |
Count.max_loc); |
483 |
} |
484 |
|
485 |
if (++Count.total > Count.max_tot) |
486 |
Count.max_tot = Count.total; |
487 |
++Count.totalrestartcount; |
488 |
|
489 |
assert(source_p->servptr == &me); |
490 |
SetClient(source_p); |
491 |
dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list); |
492 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
493 |
|
494 |
assert(dlinkFind(&unknown_list, source_p)); |
495 |
|
496 |
dlink_move_node(&source_p->connection->lclient_node, |
497 |
&unknown_list, &local_client_list); |
498 |
|
499 |
user_welcome(source_p); |
500 |
userhost_add(source_p->username, source_p->host, 0); |
501 |
AddFlag(source_p, FLAGS_USERHOST); |
502 |
|
503 |
introduce_client(source_p); |
504 |
} |
505 |
|
506 |
/* register_remote_user() |
507 |
* |
508 |
* inputs - source_p remote or directly connected client |
509 |
* - username to register as |
510 |
* - host name to register as |
511 |
* - server name |
512 |
* output - NONE |
513 |
* side effects - This function is called when a remote client |
514 |
* is introduced by a server. |
515 |
*/ |
516 |
void |
517 |
register_remote_user(struct Client *source_p) |
518 |
{ |
519 |
const struct Client *target_p = NULL; |
520 |
|
521 |
if ((target_p = source_p->servptr) && target_p->from != source_p->from) |
522 |
{ |
523 |
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE, |
524 |
"Bad User [%s] :%s USER %s@%s %s, != %s[%s]", |
525 |
source_p->from->name, source_p->name, source_p->username, |
526 |
source_p->host, source_p->servptr->name, |
527 |
target_p->name, target_p->from->name); |
528 |
sendto_one(source_p->from, |
529 |
":%s KILL %s :%s (UID from wrong direction (%s != %s))", |
530 |
me.id, source_p->id, me.name, source_p->servptr->name, |
531 |
target_p->from->name); |
532 |
|
533 |
AddFlag(source_p, FLAGS_KILLED); |
534 |
exit_client(source_p, "UID server wrong direction"); |
535 |
return; |
536 |
} |
537 |
|
538 |
/* |
539 |
* If the nick has been introduced by a services server, |
540 |
* make it a service as well. |
541 |
*/ |
542 |
if (HasFlag(source_p->servptr, FLAGS_SERVICE)) |
543 |
AddFlag(source_p, FLAGS_SERVICE); |
544 |
|
545 |
if (++Count.total > Count.max_tot) |
546 |
Count.max_tot = Count.total; |
547 |
|
548 |
SetClient(source_p); |
549 |
dlinkAdd(source_p, &source_p->lnode, &source_p->servptr->serv->client_list); |
550 |
dlinkAdd(source_p, &source_p->node, &global_client_list); |
551 |
userhost_add(source_p->username, source_p->host, 1); |
552 |
AddFlag(source_p, FLAGS_USERHOST); |
553 |
|
554 |
if (HasFlag(source_p->servptr, FLAGS_EOB)) |
555 |
sendto_realops_flags(UMODE_FARCONNECT, L_ALL, SEND_NOTICE, |
556 |
"Client connecting at %s: %s (%s@%s) [%s] [%s] <%s>", |
557 |
source_p->servptr->name, |
558 |
source_p->name, source_p->username, source_p->host, |
559 |
source_p->sockhost, source_p->info, source_p->id); |
560 |
|
561 |
introduce_client(source_p); |
562 |
} |
563 |
|
564 |
/* valid_hostname() |
565 |
* |
566 |
* Inputs - pointer to hostname |
567 |
* Output - 1 if valid, 0 if not |
568 |
* Side effects - check hostname for validity |
569 |
* |
570 |
* NOTE: this doesn't allow a hostname to begin with a dot and |
571 |
* will not allow more dots than chars. |
572 |
*/ |
573 |
int |
574 |
valid_hostname(const char *hostname) |
575 |
{ |
576 |
const char *p = hostname; |
577 |
|
578 |
assert(p); |
579 |
|
580 |
if (EmptyString(p) || *p == '.' || *p == ':') |
581 |
return 0; |
582 |
|
583 |
for (; *p; ++p) |
584 |
if (!IsHostChar(*p)) |
585 |
return 0; |
586 |
|
587 |
return p - hostname <= HOSTLEN; |
588 |
} |
589 |
|
590 |
/* valid_username() |
591 |
* |
592 |
* Inputs - pointer to user |
593 |
* Output - 1 if valid, 0 if not |
594 |
* Side effects - check username for validity |
595 |
* |
596 |
* Absolutely always reject any '*' '!' '?' '@' in an user name |
597 |
* reject any odd control characters names. |
598 |
* Allow '.' in username to allow for "first.last" |
599 |
* style of username |
600 |
*/ |
601 |
int |
602 |
valid_username(const char *username, const int local) |
603 |
{ |
604 |
unsigned int dots = 0; |
605 |
const char *p = username; |
606 |
|
607 |
assert(p); |
608 |
|
609 |
if (*p == '~') |
610 |
++p; |
611 |
|
612 |
/* |
613 |
* Reject usernames that don't start with an alphanum |
614 |
* i.e. reject jokers who have '-@somehost' or '.@somehost' |
615 |
* or "-hi-@somehost", "h-----@somehost" would still be accepted. |
616 |
*/ |
617 |
if (!IsAlNum(*p)) |
618 |
return 0; |
619 |
|
620 |
if (local) |
621 |
{ |
622 |
while (*++p) |
623 |
{ |
624 |
if (*p == '.' && ConfigGeneral.dots_in_ident) |
625 |
{ |
626 |
if (++dots > ConfigGeneral.dots_in_ident) |
627 |
return 0; |
628 |
if (!IsUserChar(*(p + 1))) |
629 |
return 0; |
630 |
} |
631 |
else if (!IsUserChar(*p)) |
632 |
return 0; |
633 |
} |
634 |
} |
635 |
else |
636 |
{ |
637 |
while (*++p) |
638 |
if (!IsUserChar(*p)) |
639 |
return 0; |
640 |
} |
641 |
|
642 |
return p - username <= USERLEN; |
643 |
} |
644 |
|
645 |
/* clean_nick_name() |
646 |
* |
647 |
* input - nickname |
648 |
* - whether it's a local nick (1) or remote (0) |
649 |
* output - none |
650 |
* side effects - walks through the nickname, returning 0 if erroneous |
651 |
*/ |
652 |
int |
653 |
valid_nickname(const char *nickname, const int local) |
654 |
{ |
655 |
const char *p = nickname; |
656 |
|
657 |
assert(p); |
658 |
|
659 |
/* |
660 |
* Nicks can't start with a digit or - or be 0 length. |
661 |
*/ |
662 |
if (EmptyString(p) || *p == '-' || (IsDigit(*p) && local)) |
663 |
return 0; |
664 |
|
665 |
for (; *p; ++p) |
666 |
if (!IsNickChar(*p)) |
667 |
return 0; |
668 |
|
669 |
return p - nickname <= NICKLEN; |
670 |
} |
671 |
|
672 |
/* send_umode() |
673 |
* send the MODE string for user (user) to connection client_p |
674 |
* -avalon |
675 |
* |
676 |
* inputs - client_p |
677 |
* - source_p |
678 |
* - int old |
679 |
* - suplied umode_buf |
680 |
* output - NONE |
681 |
*/ |
682 |
void |
683 |
send_umode(struct Client *client_p, struct Client *source_p, |
684 |
unsigned int old, char *umode_buf) |
685 |
{ |
686 |
char *m = umode_buf; |
687 |
int what = 0; |
688 |
|
689 |
/* |
690 |
* Build a string in umode_buf to represent the change in the user's |
691 |
* mode between the new (source_p->umodes) and 'old'. |
692 |
*/ |
693 |
for (const struct user_modes *tab = umode_tab; tab->c; ++tab) |
694 |
{ |
695 |
if ((tab->flag & old) && !HasUMode(source_p, tab->flag)) |
696 |
{ |
697 |
if (what == MODE_DEL) |
698 |
*m++ = tab->c; |
699 |
else |
700 |
{ |
701 |
what = MODE_DEL; |
702 |
*m++ = '-'; |
703 |
*m++ = tab->c; |
704 |
} |
705 |
} |
706 |
else if (!(tab->flag & old) && HasUMode(source_p, tab->flag)) |
707 |
{ |
708 |
if (what == MODE_ADD) |
709 |
*m++ = tab->c; |
710 |
else |
711 |
{ |
712 |
what = MODE_ADD; |
713 |
*m++ = '+'; |
714 |
*m++ = tab->c; |
715 |
} |
716 |
} |
717 |
} |
718 |
|
719 |
*m = '\0'; |
720 |
|
721 |
if (*umode_buf && client_p) |
722 |
sendto_one(client_p, ":%s!%s@%s MODE %s :%s", |
723 |
client_p->name, client_p->username, |
724 |
client_p->host, client_p->name, umode_buf); |
725 |
} |
726 |
|
727 |
/* send_umode_out() |
728 |
* |
729 |
* inputs - |
730 |
* output - NONE |
731 |
* side effects - Only send ubuf out to servers that know about this client |
732 |
*/ |
733 |
void |
734 |
send_umode_out(struct Client *source_p, unsigned int old) |
735 |
{ |
736 |
char buf[IRCD_BUFSIZE] = ""; |
737 |
|
738 |
send_umode(MyClient(source_p) ? source_p : NULL, source_p, old, buf); |
739 |
|
740 |
if (buf[0]) |
741 |
sendto_server(source_p, 0, 0, ":%s MODE %s :%s", |
742 |
source_p->id, source_p->id, buf); |
743 |
} |
744 |
|
745 |
void |
746 |
user_set_hostmask(struct Client *target_p, const char *hostname, const int what) |
747 |
{ |
748 |
dlink_node *node = NULL; |
749 |
|
750 |
if (!strcmp(target_p->host, hostname)) |
751 |
return; |
752 |
|
753 |
switch (what) |
754 |
{ |
755 |
case MODE_ADD: |
756 |
AddUMode(target_p, UMODE_HIDDENHOST); |
757 |
break; |
758 |
case MODE_DEL: |
759 |
DelUMode(target_p, UMODE_HIDDENHOST); |
760 |
break; |
761 |
default: return; |
762 |
} |
763 |
|
764 |
if (ConfigGeneral.cycle_on_host_change) |
765 |
sendto_common_channels_local(target_p, 0, 0, ":%s!%s@%s QUIT :Changing hostname", |
766 |
target_p->name, target_p->username, target_p->host); |
767 |
|
768 |
if (HasFlag(target_p, FLAGS_USERHOST)) |
769 |
userhost_del(target_p->username, target_p->host, !MyConnect(target_p)); |
770 |
|
771 |
strlcpy(target_p->host, hostname, sizeof(target_p->host)); |
772 |
|
773 |
userhost_add(target_p->username, target_p->host, !MyConnect(target_p)); |
774 |
AddFlag(target_p, FLAGS_USERHOST); |
775 |
|
776 |
if (MyConnect(target_p)) |
777 |
{ |
778 |
sendto_one_numeric(target_p, &me, RPL_VISIBLEHOST, target_p->host); |
779 |
clear_ban_cache_client(target_p); |
780 |
} |
781 |
|
782 |
if (!ConfigGeneral.cycle_on_host_change) |
783 |
return; |
784 |
|
785 |
DLINK_FOREACH(node, target_p->channel.head) |
786 |
{ |
787 |
char modebuf[4], nickbuf[NICKLEN * 3 + 3] = ""; |
788 |
char *p = modebuf; |
789 |
int len = 0; |
790 |
const struct Membership *member = node->data; |
791 |
|
792 |
if (has_member_flags(member, CHFL_CHANOP)) |
793 |
{ |
794 |
*p++ = 'o'; |
795 |
len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name); |
796 |
} |
797 |
|
798 |
if (has_member_flags(member, CHFL_HALFOP)) |
799 |
{ |
800 |
*p++ = 'h'; |
801 |
len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name); |
802 |
} |
803 |
|
804 |
if (has_member_flags(member, CHFL_VOICE)) |
805 |
{ |
806 |
*p++ = 'v'; |
807 |
len += snprintf(nickbuf + len, sizeof(nickbuf) - len, len ? " %s" : "%s", target_p->name); |
808 |
} |
809 |
|
810 |
*p = '\0'; |
811 |
|
812 |
|
813 |
sendto_channel_local_butone(target_p, CAP_EXTENDED_JOIN, 0, member->chptr, ":%s!%s@%s JOIN %s %s :%s", |
814 |
target_p->name, target_p->username, |
815 |
target_p->host, member->chptr->name, |
816 |
(!IsDigit(target_p->account[0]) && target_p->account[0] != '*') ? target_p->account : "*", |
817 |
target_p->info); |
818 |
sendto_channel_local_butone(target_p, 0, CAP_EXTENDED_JOIN, member->chptr, ":%s!%s@%s JOIN :%s", |
819 |
target_p->name, target_p->username, |
820 |
target_p->host, member->chptr->name); |
821 |
|
822 |
if (nickbuf[0]) |
823 |
sendto_channel_local_butone(target_p, 0, 0, member->chptr, ":%s MODE %s +%s %s", |
824 |
target_p->servptr->name, member->chptr->name, |
825 |
modebuf, nickbuf); |
826 |
|
827 |
} |
828 |
|
829 |
if (target_p->away[0]) |
830 |
sendto_common_channels_local(target_p, 0, CAP_AWAY_NOTIFY, |
831 |
":%s!%s@%s AWAY :%s", |
832 |
target_p->name, target_p->username, |
833 |
target_p->host, target_p->away); |
834 |
} |