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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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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 client.h |
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* \brief Header including structures, macros and prototypes for client handling |
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* \version $Id$ |
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*/ |
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|
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|
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#ifndef INCLUDED_client_h |
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#define INCLUDED_client_h |
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|
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#include "list.h" |
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#include "fdlist.h" |
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#include "config.h" |
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#include "ircd_defs.h" |
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#include "dbuf.h" |
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#include "channel.h" |
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#include "auth.h" |
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|
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struct MaskItem; |
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|
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/* |
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* status macros. |
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*/ |
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enum |
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{ |
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STAT_CONNECTING = 0x00000001U, |
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STAT_HANDSHAKE = 0x00000002U, |
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STAT_ME = 0x00000004U, |
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STAT_UNKNOWN = 0x00000008U, |
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STAT_SERVER = 0x00000010U, |
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STAT_CLIENT = 0x00000020U |
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}; |
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|
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enum |
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{ |
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REG_NEED_USER = 0x00000001U, /**< User must send USER command */ |
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REG_NEED_NICK = 0x00000002U, /**< User must send NICK command */ |
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REG_NEED_CAP = 0x00000004U, /**< In middle of CAP negotiations */ |
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REG_INIT = REG_NEED_USER | REG_NEED_NICK |
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}; |
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|
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#define ID_or_name(x,client_p) ((IsServer(client_p->from) && (x)->id[0]) ? (x)->id : (x)->name) |
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|
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#define IsConnecting(x) ((x)->status == STAT_CONNECTING) |
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#define IsHandshake(x) ((x)->status == STAT_HANDSHAKE) |
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#define IsMe(x) ((x)->status == STAT_ME) |
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#define IsUnknown(x) ((x)->status == STAT_UNKNOWN) |
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#define IsServer(x) ((x)->status == STAT_SERVER) |
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#define IsClient(x) ((x)->status == STAT_CLIENT) |
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|
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#define SetConnecting(x) {(x)->status = STAT_CONNECTING; \ |
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(x)->handler = UNREGISTERED_HANDLER; } |
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|
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#define SetHandshake(x) {(x)->status = STAT_HANDSHAKE; \ |
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(x)->handler = UNREGISTERED_HANDLER; } |
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|
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#define SetMe(x) {(x)->status = STAT_ME; \ |
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(x)->handler = UNREGISTERED_HANDLER; } |
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|
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#define SetUnknown(x) {(x)->status = STAT_UNKNOWN; \ |
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(x)->handler = UNREGISTERED_HANDLER; } |
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|
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#define SetServer(x) {(x)->status = STAT_SERVER; \ |
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(x)->handler = SERVER_HANDLER; } |
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|
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#define SetClient(x) {(x)->status = STAT_CLIENT; \ |
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(x)->handler = CLIENT_HANDLER; } |
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|
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#define MyConnect(x) ((x)->connection != NULL) |
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#define MyClient(x) (MyConnect(x) && IsClient(x)) |
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|
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/* |
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* ts stuff |
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*/ |
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enum |
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{ |
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TS_CURRENT = 6, /**< Current TS protocol version */ |
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TS_MIN = 6 /**< Minimum supported TS protocol version */ |
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}; |
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|
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enum |
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{ |
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CAP_MULTI_PREFIX = 0x00000001U, /**< ircv3.1 multi-prefix client capability */ |
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CAP_AWAY_NOTIFY = 0x00000002U, /**< ircv3.1 away-notify client capability */ |
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CAP_UHNAMES = 0x00000004U, /**< ircv3.2 userhost-in-names client capability */ |
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CAP_EXTENDED_JOIN = 0x00000008U, /**< ircv3.1 extended-join client capability */ |
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CAP_ACCOUNT_NOTIFY = 0x00000010U /**< ircv3.1 account-notify client capability */ |
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}; |
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|
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#define HasCap(x, y) ((x)->connection->cap_active & (y)) |
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|
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|
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/* housekeeping flags */ |
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enum |
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{ |
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FLAGS_PINGSENT = 0x00000001U, /**< Unreplied ping sent */ |
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FLAGS_DEADSOCKET = 0x00000002U, /**< Local socket is dead--Exiting soon */ |
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FLAGS_KILLED = 0x00000004U, /**< Prevents "QUIT" from being sent for this */ |
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FLAGS_CLOSING = 0x00000008U, /**< Set when closing to suppress errors */ |
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FLAGS_GOTID = 0x00000010U, /**< Successful ident lookup achieved */ |
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FLAGS_SENDQEX = 0x00000020U, /**< Sendq exceeded */ |
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FLAGS_IPHASH = 0x00000040U, /**< Iphashed this client */ |
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FLAGS_MARK = 0x00000080U, /**< Marked client */ |
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FLAGS_CANFLOOD = 0x00000100U, /**< Client has the ability to flood */ |
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FLAGS_EXEMPTKLINE = 0x00000200U, /**< Client is exempt from k-lines */ |
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FLAGS_NOLIMIT = 0x00000400U, /**< Client is exempt from limits */ |
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FLAGS_PING_COOKIE = 0x00000800U, /**< PING Cookie */ |
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FLAGS_FLOODDONE = 0x00001000U, /**< Flood grace period has been ended. */ |
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FLAGS_EOB = 0x00002000U, /**< Server has sent us an EOB */ |
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FLAGS_HIDDEN = 0x00004000U, /**< A hidden server. Not shown in /links */ |
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FLAGS_BLOCKED = 0x00008000U, /**< Must wait for COMM_SELECT_WRITE */ |
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FLAGS_USERHOST = 0x00010000U, /**< Client is in userhost hash */ |
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FLAGS_BURSTED = 0x00020000U, /**< User was already bursted */ |
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FLAGS_EXEMPTRESV = 0x00040000U, /**< Client is exempt from RESV */ |
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FLAGS_GOTUSER = 0x00080000U, /**< If we received a USER command */ |
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FLAGS_FINISHED_AUTH = 0x00100000U, /**< Client has been released from auth */ |
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FLAGS_FLOOD_NOTICED = 0x00200000U, /**< Notice to opers about this flooder has been sent */ |
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FLAGS_SERVICE = 0x00400000U, /**< Client/server is a network service */ |
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FLAGS_SSL = 0x00800000U, /**< User is connected via TLS/SSL */ |
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FLAGS_SQUIT = 0x01000000U, |
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FLAGS_EXEMPTXLINE = 0x02000000U /**< Client is exempt from x-lines */ |
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}; |
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|
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#define HasFlag(x, y) ((x)->flags & (y)) |
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#define AddFlag(x, y) ((x)->flags |= (y)) |
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#define DelFlag(x, y) ((x)->flags &= ~(y)) |
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|
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|
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/* umodes, settable flags */ |
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enum |
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{ |
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UMODE_SERVNOTICE = 0x00000001U, /**< Server notices such as kill */ |
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UMODE_CCONN = 0x00000002U, /**< Can see client connection notices */ |
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UMODE_REJ = 0x00000004U, /**< Bot Rejections */ |
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UMODE_SKILL = 0x00000008U, /**< Server Killed */ |
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UMODE_FULL = 0x00000010U, /**< Full messages */ |
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UMODE_SPY = 0x00000020U, /**< See STATS / LINKS */ |
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UMODE_DEBUG = 0x00000040U, /**< 'debugging' info */ |
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UMODE_NCHANGE = 0x00000080U, /**< Nick change notice */ |
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UMODE_WALLOP = 0x00000100U, /**< Send wallops to them */ |
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UMODE_INVISIBLE = 0x00000200U, /**< Makes user invisible */ |
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UMODE_BOTS = 0x00000400U, /**< Shows bots */ |
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UMODE_EXTERNAL = 0x00000800U, /**< Show servers introduced and splitting */ |
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UMODE_CALLERID = 0x00001000U, /**< Block unless caller id's */ |
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UMODE_SOFTCALLERID = 0x00002000U, /**< Block unless on common channel */ |
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UMODE_UNAUTH = 0x00004000U, /**< Show unauth connects here */ |
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UMODE_LOCOPS = 0x00008000U, /**< Can see LOCOPS messages */ |
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UMODE_DEAF = 0x00010000U, /**< Don't receive channel messages */ |
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UMODE_REGISTERED = 0x00020000U, /**< User has identified for that nick. */ |
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UMODE_REGONLY = 0x00040000U, /**< Only registered nicks may PM */ |
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UMODE_HIDDEN = 0x00080000U, /**< IRC operator status is hidden */ |
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UMODE_OPER = 0x00100000U, /**< IRC operator */ |
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UMODE_ADMIN = 0x00200000U, /**< Admin on server */ |
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UMODE_FARCONNECT = 0x00400000U, /**< Can see remote client connects/exits */ |
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UMODE_HIDDENHOST = 0x00800000U, /**< User's host is hidden */ |
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UMODE_SSL = 0x01000000U, /**< User is connected via TLS/SSL */ |
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UMODE_WEBIRC = 0x02000000U, /**< User connected via a webirc gateway */ |
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UMODE_HIDEIDLE = 0x04000000U, /**< Hides idle and signon time in WHOIS */ |
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UMODE_HIDECHANS = 0x08000000U /**< Hides channel list in WHOIS */ |
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}; |
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|
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#define HasUMode(x, y) ((x)->umodes & (y)) |
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#define AddUMode(x, y) ((x)->umodes |= (y)) |
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#define DelUMode(x, y) ((x)->umodes &= ~(y)) |
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|
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|
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/* oper priv flags */ |
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enum |
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{ |
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OPER_FLAG_KILL_REMOTE = 0x00000001U, /**< Oper can KILL remote users */ |
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OPER_FLAG_KILL = 0x00000002U, /**< Oper can KILL local users */ |
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OPER_FLAG_UNKLINE = 0x00000004U, /**< Oper can use UNKLINE command */ |
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OPER_FLAG_KLINE = 0x00000008U, /**< Oper can use KLINE command */ |
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OPER_FLAG_XLINE = 0x00000010U, /**< Oper can use XLINE command */ |
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OPER_FLAG_DIE = 0x00000020U, /**< Oper can use DIE command */ |
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OPER_FLAG_REHASH = 0x00000040U, /**< Oper can use REHASH command */ |
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OPER_FLAG_ADMIN = 0x00000080U, /**< Oper can set user mode +a */ |
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OPER_FLAG_REMOTEBAN = 0x00000100U, /**< Oper can set remote bans */ |
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OPER_FLAG_GLOBOPS = 0x00000200U, /**< Oper can use GLOBOPS command */ |
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OPER_FLAG_MODULE = 0x00000400U, /**< Oper can use MODULE command */ |
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OPER_FLAG_RESTART = 0x00000800U, /**< Oper can use RESTART command */ |
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OPER_FLAG_DLINE = 0x00001000U, /**< Oper can use DLINE command */ |
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OPER_FLAG_UNDLINE = 0x00002000U, /**< Oper can use UNDLINE command */ |
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OPER_FLAG_SET = 0x00004000U, /**< Oper can use SET command */ |
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OPER_FLAG_SQUIT = 0x00008000U, /**< Oper can do local SQUIT */ |
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OPER_FLAG_SQUIT_REMOTE = 0x00010000U, /**< Oper can do remote SQUIT */ |
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OPER_FLAG_CONNECT = 0x00020000U, /**< Oper can do local CONNECT */ |
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OPER_FLAG_CONNECT_REMOTE = 0x00040000U, /**< Oper can do remote CONNECT */ |
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OPER_FLAG_WALLOPS = 0x00080000U, /**< Oper can use WALLOPS command */ |
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OPER_FLAG_LOCOPS = 0x00100000U, /**< Oper can use LOCOPS command */ |
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OPER_FLAG_UNXLINE = 0x00200000U, /**< Oper can use UNXLINE command */ |
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OPER_FLAG_OPME = 0x00400000U, /**< Oper can use OPME command */ |
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OPER_FLAG_JOIN_RESV = 0x00800000U, /**< Oper can use JOIN on resv {} channels */ |
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OPER_FLAG_NICK_RESV = 0x01000000U, /**< Oper can use NICK on resv {} nicks */ |
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OPER_FLAG_RESV = 0x02000000U, /**< Oper can use RESV command */ |
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OPER_FLAG_UNRESV = 0x04000000U, /**< Oper can use UNRESV command */ |
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OPER_FLAG_CLOSE = 0x08000000U /**< Oper can use CLOSE command */ |
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}; |
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|
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#define HasOFlag(x, y) ((x)->connection->operflags & (y)) |
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#define AddOFlag(x, y) ((x)->connection->operflags |= (y)) |
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#define DelOFlag(x, y) ((x)->connection->operflags &= ~(y)) |
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#define ClrOFlag(x) ((x)->connection->operflags = 0) |
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|
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|
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|
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/* flags macros. */ |
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#define IsDead(x) ((x)->flags & FLAGS_DEADSOCKET) |
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#define SetDead(x) ((x)->flags |= FLAGS_DEADSOCKET) |
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#define IsDefunct(x) ((x)->flags & (FLAGS_DEADSOCKET|FLAGS_CLOSING|FLAGS_KILLED)) |
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|
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/* oper flags */ |
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#define SetOper(x) {(x)->umodes |= UMODE_OPER; \ |
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if (MyClient((x))) (x)->handler = OPER_HANDLER;} |
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|
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#define ClearOper(x) {(x)->umodes &= ~(UMODE_OPER|UMODE_ADMIN); \ |
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if (MyClient((x))) \ |
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(x)->handler = CLIENT_HANDLER; } |
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|
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#define IsFloodDone(x) ((x)->flags & FLAGS_FLOODDONE) |
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#define IsHidden(x) ((x)->flags & FLAGS_HIDDEN) |
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|
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|
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/*! \brief addr_mask_type enumeration */ |
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enum addr_mask_type |
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{ |
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HIDE_IP, /**< IP is hidden. Resolved hostname is shown instead */ |
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SHOW_IP, /**< IP is shown. No parts of it are hidden or masked */ |
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MASK_IP /**< IP is masked. 255.255.255.255 is shown instead */ |
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}; |
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|
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struct ServicesTag |
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{ |
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dlink_node node; |
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char *tag; |
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unsigned int numeric; |
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unsigned int umodes; |
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}; |
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|
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/*! \brief Server structure */ |
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struct Server |
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{ |
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dlink_list server_list; /**< Servers on this server */ |
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dlink_list client_list; /**< Clients on this server */ |
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char by[NICKLEN + 1]; /**< Who activated this connection */ |
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}; |
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|
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/*! \brief ListTask structure */ |
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struct ListTask |
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{ |
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dlink_node node; /**< Embedded list node used to link into listing_client_list */ |
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dlink_list show_mask; /**< Channels to show */ |
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dlink_list hide_mask; /**< Channels to hide */ |
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|
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unsigned int hash_index; /**< The hash bucket we are currently in */ |
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unsigned int users_min; |
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unsigned int users_max; |
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unsigned int created_min; |
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unsigned int created_max; |
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unsigned int topicts_min; |
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unsigned int topicts_max; |
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char topic[TOPICLEN + 1]; |
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}; |
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|
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/*! \brief Connection structure |
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* |
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* Allocated only for local clients, that are directly connected |
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* to \b this server with a socket. |
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*/ |
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struct Connection |
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{ |
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dlink_node lclient_node; |
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|
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unsigned int registration; |
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unsigned int cap_client; /**< Client capabilities (from us) */ |
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unsigned int cap_active; /**< Active capabilities (to us) */ |
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unsigned int caps; /**< Capabilities bit-field */ |
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|
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unsigned int operflags; /**< IRC Operator privilege flags */ |
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unsigned int random_ping; /**< Holding a 32bit value used for PING cookies */ |
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|
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uint64_t serial; /**< Used to enforce 1 send per nick */ |
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|
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time_t lasttime; /**< Last time data read from socket */ |
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time_t firsttime; /**< Time client was created */ |
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time_t since; /**< Last time we parsed something */ |
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time_t last_join_time; /**< When this client last joined a channel */ |
| 308 |
time_t last_leave_time; /**< When this client last left a channel */ |
| 309 |
int join_leave_count; /**< Count of JOIN/LEAVE in less than |
| 310 |
MIN_JOIN_LEAVE_TIME seconds */ |
| 311 |
int oper_warn_count_down; /**< Warn opers of this possible |
| 312 |
spambot every time this gets to 0 */ |
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time_t last_caller_id_time; |
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time_t first_received_message_time; |
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time_t last_privmsg; /**< Last time we got a PRIVMSG */ |
| 316 |
|
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int received_number_of_privmsgs; |
| 318 |
|
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struct ListTask *list_task; |
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|
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struct dbuf_queue buf_sendq; |
| 322 |
struct dbuf_queue buf_recvq; |
| 323 |
|
| 324 |
struct |
| 325 |
{ |
| 326 |
unsigned int messages; /**< Statistics: protocol messages sent/received */ |
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uint64_t bytes; /**< Statistics: total bytes sent/received */ |
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} recv, send; |
| 329 |
|
| 330 |
struct |
| 331 |
{ |
| 332 |
unsigned int count; /**< How many AWAY/INVITE/KNOCK/NICK requests client has sent */ |
| 333 |
time_t last_attempt; /**< Last time the AWAY/INVITE/KNOCK/NICK request was issued */ |
| 334 |
} away, invite, knock, nick; |
| 335 |
|
| 336 |
struct AuthRequest auth; |
| 337 |
struct Listener *listener; /**< Listener accepted from */ |
| 338 |
dlink_list acceptlist; /**< Clients I'll allow to talk to me */ |
| 339 |
dlink_list watches; /**< Chain of Watch pointer blocks */ |
| 340 |
dlink_list confs; /**< Configuration record associated */ |
| 341 |
dlink_list invited; /**< Chain of invite pointer blocks */ |
| 342 |
struct irc_ssaddr ip; |
| 343 |
int aftype; /**< Makes life easier for DNS res in IPV6 */ |
| 344 |
int country_id; /**< ID corresponding to a ISO 3166 country code */ |
| 345 |
|
| 346 |
fde_t fd; |
| 347 |
|
| 348 |
/* Anti-flood stuff. We track how many messages were parsed and how |
| 349 |
* many we were allowed in the current second, and apply a simple |
| 350 |
* decay to avoid flooding. |
| 351 |
* -- adrian |
| 352 |
*/ |
| 353 |
int allow_read; /**< How many we're allowed to read in this second */ |
| 354 |
int sent_parsed; /**< How many messages we've parsed in this second */ |
| 355 |
|
| 356 |
char *password; /**< Password supplied by the client/server */ |
| 357 |
}; |
| 358 |
|
| 359 |
/*! \brief Client structure */ |
| 360 |
struct Client |
| 361 |
{ |
| 362 |
dlink_node node; |
| 363 |
dlink_node lnode; /**< Used for Server->servers/users */ |
| 364 |
|
| 365 |
struct Connection *connection; /**< Connection structure associated with this client */ |
| 366 |
struct Client *hnext; /**< For client hash table lookups by name */ |
| 367 |
struct Client *idhnext; /**< For SID hash table lookups by sid */ |
| 368 |
struct Server *serv; /**< ...defined, if this is a server */ |
| 369 |
struct Client *servptr; /**< Points to server this Client is on */ |
| 370 |
struct Client *from; /**< == self, if Local Client, *NEVER* NULL! */ |
| 371 |
|
| 372 |
time_t tsinfo; /**< TS on the nick, SVINFO on server */ |
| 373 |
|
| 374 |
unsigned int flags; /**< Client flags */ |
| 375 |
unsigned int umodes; /**< User modes this client has set */ |
| 376 |
unsigned int hopcount; /**< Number of servers to this 0 = local */ |
| 377 |
unsigned int status; /**< Client type */ |
| 378 |
unsigned int handler; /**< Handler index */ |
| 379 |
|
| 380 |
dlink_list whowas; |
| 381 |
dlink_list channel; /**< Chain of channel pointer blocks */ |
| 382 |
dlink_list svstags; /**< List of ServicesTag items */ |
| 383 |
|
| 384 |
char away[AWAYLEN + 1]; /**< Client's AWAY message. Can be set/unset via AWAY command */ |
| 385 |
char name[HOSTLEN + 1]; /**< Unique name for a client nick or host */ |
| 386 |
char id[IDLEN + 1]; /**< Client ID, unique ID per client */ |
| 387 |
char account[ACCOUNTLEN + 1]; /**< Services account */ |
| 388 |
|
| 389 |
/* |
| 390 |
* client->username is the username from ident or the USER message, |
| 391 |
* If the client is idented the USER message is ignored, otherwise |
| 392 |
* the username part of the USER message is put here prefixed with a |
| 393 |
* tilde depending on the auth{} block. Once a client has registered, |
| 394 |
* this field should be considered read-only. |
| 395 |
*/ |
| 396 |
char username[USERLEN + 1]; /* client's username */ |
| 397 |
|
| 398 |
/* |
| 399 |
* client->host contains the resolved name or ip address |
| 400 |
* as a string for the user, it may be fiddled with for oper spoofing etc. |
| 401 |
* once it's changed the *real* address goes away. This should be |
| 402 |
* considered a read-only field after the client has registered. |
| 403 |
*/ |
| 404 |
char host[HOSTLEN + 1]; /* client's hostname */ |
| 405 |
|
| 406 |
/* |
| 407 |
* client->info for unix clients will normally contain the info from the |
| 408 |
* gcos field in /etc/passwd but anything can go here. |
| 409 |
*/ |
| 410 |
char info[REALLEN + 1]; /* Free form additional client info */ |
| 411 |
|
| 412 |
/* |
| 413 |
* client->sockhost contains the ip address gotten from the socket as a |
| 414 |
* string, this field should be considered read-only once the connection |
| 415 |
* has been made. (set in s_bsd.c only) |
| 416 |
*/ |
| 417 |
char sockhost[HOSTIPLEN + 1]; /* This is the host name from the |
| 418 |
socket ip address as string */ |
| 419 |
char *certfp; /**< SSL certificate fingerprint */ |
| 420 |
}; |
| 421 |
|
| 422 |
|
| 423 |
extern struct Client me; |
| 424 |
extern dlink_list listing_client_list; |
| 425 |
extern dlink_list global_client_list; |
| 426 |
extern dlink_list global_server_list; /* global servers on the network */ |
| 427 |
extern dlink_list local_client_list; /* local clients only ON this server */ |
| 428 |
extern dlink_list local_server_list; /* local servers to this server ONLY */ |
| 429 |
extern dlink_list unknown_list; /* unknown clients ON this server only */ |
| 430 |
extern dlink_list oper_list; /* our opers, duplicated in local_client_list */ |
| 431 |
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| 432 |
extern int accept_message(struct Client *, struct Client *); |
| 433 |
extern unsigned int client_get_idle_time(const struct Client *, const struct Client *); |
| 434 |
extern struct split_nuh_item *find_accept(const char *, const char *, |
| 435 |
const char *, struct Client *, |
| 436 |
int (*)(const char *, const char *)); |
| 437 |
extern void client_attach_svstag(struct Client *, unsigned int, const char *, const char *const); |
| 438 |
extern void client_clear_svstags(struct Client *); |
| 439 |
extern void del_accept(struct split_nuh_item *, struct Client *); |
| 440 |
extern void del_all_accepts(struct Client *); |
| 441 |
extern void exit_client(struct Client *, const char *); |
| 442 |
extern void conf_try_ban(struct Client *, struct MaskItem *); |
| 443 |
extern void check_conf_klines(void); |
| 444 |
extern void client_init(void); |
| 445 |
extern void dead_link_on_write(struct Client *, int); |
| 446 |
extern void dead_link_on_read(struct Client *, int); |
| 447 |
extern void exit_aborted_clients(void); |
| 448 |
extern void free_exited_clients(void); |
| 449 |
extern struct Client *make_client(struct Client *); |
| 450 |
extern struct Client *find_chasing(struct Client *, const char *); |
| 451 |
extern struct Client *find_person(const struct Client *const, const char *); |
| 452 |
extern const char *get_client_name(const struct Client *, enum addr_mask_type); |
| 453 |
|
| 454 |
#endif /* INCLUDED_client_h */ |
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