/usr/include/ircd-hybrid-8/client.h is in hybrid-dev 1:8.1.13.dfsg.1-1.
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
*
* Copyright (C) 2002 by the past and present ircd coders, and others.
*
* 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
*/
/*! \file client.h
* \brief Header including structures, macros and prototypes for client handling
* \version $Id: client.h 2590 2013-11-21 13:51:37Z michael $
*/
#ifndef INCLUDED_client_h
#define INCLUDED_client_h
#include "list.h"
#include "fdlist.h"
#include "config.h"
#include "ircd_defs.h"
#include "dbuf.h"
#include "channel.h"
#include "s_auth.h"
/*
* status macros.
*/
#define STAT_CONNECTING 0x01
#define STAT_HANDSHAKE 0x02
#define STAT_ME 0x04
#define STAT_UNKNOWN 0x08
#define STAT_SERVER 0x10
#define STAT_CLIENT 0x20
#define REG_NEED_USER 0x1
#define REG_NEED_NICK 0x2
#define REG_NEED_CAP 0x4
#define REG_INIT (REG_NEED_USER|REG_NEED_NICK)
#define HasID(x) ((x)->id[0] != '\0')
#define ID(x) (HasID(x) ? (x)->id : (x)->name)
#define ID_or_name(x,client_p) ((IsCapable(client_p->from, CAP_TS6) && HasID(x)) ? (x)->id : (x)->name)
#define IsRegistered(x) ((x)->status > STAT_UNKNOWN)
#define IsConnecting(x) ((x)->status == STAT_CONNECTING)
#define IsHandshake(x) ((x)->status == STAT_HANDSHAKE)
#define IsMe(x) ((x)->status == STAT_ME)
#define IsUnknown(x) ((x)->status == STAT_UNKNOWN)
#define IsServer(x) ((x)->status == STAT_SERVER)
#define IsClient(x) ((x)->status == STAT_CLIENT)
#define SetConnecting(x) {(x)->status = STAT_CONNECTING; \
(x)->handler = UNREGISTERED_HANDLER; }
#define SetHandshake(x) {(x)->status = STAT_HANDSHAKE; \
(x)->handler = UNREGISTERED_HANDLER; }
#define SetMe(x) {(x)->status = STAT_ME; \
(x)->handler = UNREGISTERED_HANDLER; }
#define SetUnknown(x) {(x)->status = STAT_UNKNOWN; \
(x)->handler = UNREGISTERED_HANDLER; }
#define SetServer(x) {(x)->status = STAT_SERVER; \
(x)->handler = SERVER_HANDLER; }
#define SetClient(x) {(x)->status = STAT_CLIENT; \
(x)->handler = HasUMode(x, UMODE_OPER) ? \
OPER_HANDLER : CLIENT_HANDLER; }
#define MyConnect(x) ((x)->localClient != NULL)
#define MyClient(x) (MyConnect(x) && IsClient(x))
/*
* ts stuff
*/
#define TS_CURRENT 6 /**< current TS protocol version */
#define TS_MIN 5 /**< minimum supported TS protocol version */
#define TS_DOESTS 0x20000000
#define DoesTS(x) ((x)->tsinfo == TS_DOESTS)
#define CAP_MULTI_PREFIX 0x00000001
#define CAP_AWAY_NOTIFY 0x00000002
#define HasCap(x, y) ((x)->localClient->cap_active & (y))
/* housekeeping flags */
#define FLAGS_PINGSENT 0x00000001 /**< Unreplied ping sent */
#define FLAGS_DEADSOCKET 0x00000002 /**< Local socket is dead--Exiting soon */
#define FLAGS_KILLED 0x00000004 /**< Prevents "QUIT" from being sent for this */
#define FLAGS_CLOSING 0x00000008 /**< set when closing to suppress errors */
#define FLAGS_GOTID 0x00000010 /**< successful ident lookup achieved */
#define FLAGS_NEEDID 0x00000020 /**< auth{} block say must use ident return */
#define FLAGS_SENDQEX 0x00000040 /**< Sendq exceeded */
#define FLAGS_IPHASH 0x00000080 /**< iphashed this client */
#define FLAGS_MARK 0x00000100 /**< marked client */
#define FLAGS_CANFLOOD 0x00000200 /**< client has the ability to flood */
#define FLAGS_EXEMPTGLINE 0x00000400 /**< client can't be G-lined */
#define FLAGS_EXEMPTKLINE 0x00000800 /**< client is exempt from kline */
#define FLAGS_NOLIMIT 0x00001000 /**< client is exempt from limits */
#define FLAGS_PING_COOKIE 0x00002000 /**< PING Cookie */
#define FLAGS_IP_SPOOFING 0x00004000 /**< client IP is spoofed */
#define FLAGS_FLOODDONE 0x00008000 /**< Flood grace period has been ended. */
#define FLAGS_EOB 0x00010000 /**< server has sent us an EOB */
#define FLAGS_HIDDEN 0x00020000 /**< a hidden server. not shown in /links */
#define FLAGS_BLOCKED 0x00040000 /**< must wait for COMM_SELECT_WRITE */
#define FLAGS_USERHOST 0x00080000 /**< client is in userhost hash */
#define FLAGS_BURSTED 0x00100000 /**< user was already bursted */
#define FLAGS_EXEMPTRESV 0x00200000 /**< client is exempt from RESV */
#define FLAGS_GOTUSER 0x00400000 /**< if we received a USER command */
#define FLAGS_FINISHED_AUTH 0x00800000 /**< Client has been released from auth */
#define FLAGS_FLOOD_NOTICED 0x01000000 /**< Notice to opers about this flooder has been sent */
#define FLAGS_SERVICE 0x02000000 /**< Client/server is a network service */
#define FLAGS_AUTH_SPOOF 0x04000000 /**< user's hostname has been spoofed by an auth{} spoof*/
#define FLAGS_SSL 0x08000000 /**< User is connected via TLS/SSL */
#define HasFlag(x, y) ((x)->flags & (y))
#define AddFlag(x, y) ((x)->flags |= (y))
#define DelFlag(x, y) ((x)->flags &= ~(y))
/* umodes, settable flags */
#define UMODE_SERVNOTICE 0x00000001 /**< server notices such as kill */
#define UMODE_CCONN 0x00000002 /**< Client Connections */
#define UMODE_REJ 0x00000004 /**< Bot Rejections */
#define UMODE_SKILL 0x00000008 /**< Server Killed */
#define UMODE_FULL 0x00000010 /**< Full messages */
#define UMODE_SPY 0x00000020 /**< see STATS / LINKS */
#define UMODE_DEBUG 0x00000040 /**< 'debugging' info */
#define UMODE_NCHANGE 0x00000080 /**< Nick change notice */
#define UMODE_WALLOP 0x00000100 /**< send wallops to them */
#define UMODE_OPERWALL 0x00000200 /**< Operwalls */
#define UMODE_INVISIBLE 0x00000400 /**< makes user invisible */
#define UMODE_BOTS 0x00000800 /**< shows bots */
#define UMODE_EXTERNAL 0x00001000 /**< show servers introduced and splitting */
#define UMODE_CALLERID 0x00002000 /**< block unless caller id's */
#define UMODE_SOFTCALLERID 0x00004000 /**< block unless on common channel */
#define UMODE_UNAUTH 0x00008000 /**< show unauth connects here */
#define UMODE_LOCOPS 0x00010000 /**< show locops */
#define UMODE_DEAF 0x00020000 /**< don't receive channel messages */
#define UMODE_REGISTERED 0x00040000 /**< User has identified for that nick. */
#define UMODE_REGONLY 0x00080000 /**< Only registered nicks may PM */
#define UMODE_HIDDEN 0x00100000 /**< Operator status is hidden */
#define UMODE_OPER 0x00200000 /**< Operator */
#define UMODE_ADMIN 0x00400000 /**< Admin on server */
#define UMODE_FARCONNECT 0x00800000 /**< Can see remote client connects/exits */
#define UMODE_HIDDENHOST 0x01000000 /**< User's host is hidden */
#define UMODE_SSL 0x02000000 /**< User is connected via TLS/SSL */
#define UMODE_WEBIRC 0x04000000 /**< User connected via a webirc gateway */
#define UMODE_ALL UMODE_SERVNOTICE
#define HasUMode(x, y) ((x)->umodes & (y))
#define AddUMode(x, y) ((x)->umodes |= (y))
#define DelUMode(x, y) ((x)->umodes &= ~(y))
#define SEND_UMODES (UMODE_INVISIBLE | UMODE_OPER | UMODE_WALLOP |\
UMODE_REGONLY | UMODE_REGISTERED | UMODE_ADMIN |\
UMODE_HIDDEN | UMODE_HIDDENHOST | UMODE_SSL |\
UMODE_WEBIRC | UMODE_CALLERID | UMODE_SOFTCALLERID)
/* oper priv flags */
#define OPER_FLAG_KILL_REMOTE 0x00000001 /**< Oper can global kill */
#define OPER_FLAG_KILL 0x00000002 /**< Oper can do local KILL */
#define OPER_FLAG_UNKLINE 0x00000004 /**< Oper can use unkline */
#define OPER_FLAG_GLINE 0x00000008 /**< Oper can use gline */
#define OPER_FLAG_K 0x00000010 /**< Oper can kill/kline */
#define OPER_FLAG_X 0x00000020 /**< Oper can xline */
#define OPER_FLAG_DIE 0x00000040 /**< Oper can die */
#define OPER_FLAG_REHASH 0x00000080 /**< Oper can rehash */
#define OPER_FLAG_ADMIN 0x00000100 /**< Oper can set umode +a */
#define OPER_FLAG_OPERWALL 0x00000200 /**< Oper can use OPERWALL command */
#define OPER_FLAG_REMOTEBAN 0x00000400 /**< Oper can set remote bans */
#define OPER_FLAG_GLOBOPS 0x00000800 /**< Oper can use GLOBOPS command */
#define OPER_FLAG_MODULE 0x00001000 /**< Oper can use MODULE commands */
#define OPER_FLAG_RESTART 0x00002000 /**< Oper can use RESTART command */
#define OPER_FLAG_DLINE 0x00004000 /**< Oper can use DLINE command */
#define OPER_FLAG_UNDLINE 0x00008000 /**< Oper can use UNDLINE command */
#define OPER_FLAG_SET 0x00010000 /**< Oper can use SET command */
#define OPER_FLAG_SQUIT 0x00020000 /**< Oper can do local SQUIT */
#define OPER_FLAG_SQUIT_REMOTE 0x00040000 /**< Oper can do global SQUIT */
#define OPER_FLAG_CONNECT 0x00080000 /**< Oper can do local CONNECT */
#define OPER_FLAG_CONNECT_REMOTE 0x00100000 /**< Oper can do global CONNECT */
#define OPER_FLAG_WALLOPS 0x00200000 /**< Oper can do WALLOPS */
#define OPER_FLAG_LOCOPS 0x00400000 /**< Oper can do LOCOPS */
#define HasOFlag(x, y) (MyConnect(x) ? (x)->localClient->operflags & (y) : 0)
#define AddOFlag(x, y) ((x)->localClient->operflags |= (y))
#define DelOFlag(x, y) ((x)->localClient->operflags &= ~(y))
#define ClrOFlag(x) ((x)->localClient->operflags = 0)
/* flags macros. */
#define IsAuthFinished(x) ((x)->flags & FLAGS_FINISHED_AUTH)
#define IsDead(x) ((x)->flags & FLAGS_DEADSOCKET)
#define SetDead(x) ((x)->flags |= FLAGS_DEADSOCKET)
#define IsClosing(x) ((x)->flags & FLAGS_CLOSING)
#define SetClosing(x) ((x)->flags |= FLAGS_CLOSING)
#define SetCanFlood(x) ((x)->flags |= FLAGS_CANFLOOD)
#define IsCanFlood(x) ((x)->flags & FLAGS_CANFLOOD)
#define IsDefunct(x) ((x)->flags & (FLAGS_DEADSOCKET|FLAGS_CLOSING| \
FLAGS_KILLED))
/* oper flags */
#define MyOper(x) (MyConnect(x) && HasUMode(x, UMODE_OPER))
#define SetOper(x) {(x)->umodes |= UMODE_OPER; \
if (!IsServer((x))) (x)->handler = OPER_HANDLER;}
#define ClearOper(x) {(x)->umodes &= ~(UMODE_OPER|UMODE_ADMIN); \
if (!HasUMode(x, UMODE_OPER) && !IsServer((x))) \
(x)->handler = CLIENT_HANDLER; }
#define SetSendQExceeded(x) ((x)->flags |= FLAGS_SENDQEX)
#define IsSendQExceeded(x) ((x)->flags & FLAGS_SENDQEX)
#define SetIpHash(x) ((x)->flags |= FLAGS_IPHASH)
#define ClearIpHash(x) ((x)->flags &= ~FLAGS_IPHASH)
#define IsIpHash(x) ((x)->flags & FLAGS_IPHASH)
#define SetUserHost(x) ((x)->flags |= FLAGS_USERHOST)
#define ClearUserHost(x) ((x)->flags &= ~FLAGS_USERHOST)
#define IsUserHostIp(x) ((x)->flags & FLAGS_USERHOST)
#define SetPingSent(x) ((x)->flags |= FLAGS_PINGSENT)
#define IsPingSent(x) ((x)->flags & FLAGS_PINGSENT)
#define ClearPingSent(x) ((x)->flags &= ~FLAGS_PINGSENT)
#define SetNeedId(x) ((x)->flags |= FLAGS_NEEDID)
#define IsNeedId(x) ((x)->flags & FLAGS_NEEDID)
#define SetGotId(x) ((x)->flags |= FLAGS_GOTID)
#define IsGotId(x) ((x)->flags & FLAGS_GOTID)
#define IsExemptKline(x) ((x)->flags & FLAGS_EXEMPTKLINE)
#define SetExemptKline(x) ((x)->flags |= FLAGS_EXEMPTKLINE)
#define IsExemptLimits(x) ((x)->flags & FLAGS_NOLIMIT)
#define SetExemptLimits(x) ((x)->flags |= FLAGS_NOLIMIT)
#define IsExemptGline(x) ((x)->flags & FLAGS_EXEMPTGLINE)
#define SetExemptGline(x) ((x)->flags |= FLAGS_EXEMPTGLINE)
#define IsExemptResv(x) ((x)->flags & FLAGS_EXEMPTRESV)
#define SetExemptResv(x) ((x)->flags |= FLAGS_EXEMPTRESV)
#define SetIPSpoof(x) ((x)->flags |= FLAGS_IP_SPOOFING)
#define IsIPSpoof(x) ((x)->flags & FLAGS_IP_SPOOFING)
#define DelIPSpoof(x) ((x)->flags &= ~FLAGS_IP_SPOOFING)
#define IsFloodDone(x) ((x)->flags & FLAGS_FLOODDONE)
#define SetFloodDone(x) ((x)->flags |= FLAGS_FLOODDONE)
#define HasPingCookie(x) ((x)->flags & FLAGS_PING_COOKIE)
#define SetPingCookie(x) ((x)->flags |= FLAGS_PING_COOKIE)
#define IsHidden(x) ((x)->flags & FLAGS_HIDDEN)
#define SetHidden(x) ((x)->flags |= FLAGS_HIDDEN)
#define IsSendqBlocked(x) ((x)->flags & FLAGS_BLOCKED)
#define SetSendqBlocked(x) ((x)->flags |= FLAGS_BLOCKED)
#define ClearSendqBlocked(x) ((x)->flags &= ~FLAGS_BLOCKED)
/*! \brief addr_mask_type enumeration */
enum addr_mask_type
{
HIDE_IP, /**< IP is hidden. Resolved hostname is shown instead */
SHOW_IP, /**< IP is shown. No parts of it are hidden or masked */
MASK_IP /**< IP is masked. 255.255.255.255 is shown instead */
};
/*! \brief Server structure */
struct Server
{
dlink_list server_list; /**< Servers on this server */
dlink_list client_list; /**< Clients on this server */
char by[NICKLEN + 1]; /**< who activated this connection */
};
/*! \brief ListTask structure */
struct ListTask
{
dlink_list show_mask; /**< show these channels.. */
dlink_list hide_mask; /**< ..and hide these ones */
unsigned int hash_index; /**< the bucket we are currently in */
unsigned int users_min;
unsigned int users_max;
unsigned int created_min;
unsigned int created_max;
unsigned int topicts_min;
unsigned int topicts_max;
};
/*! \brief LocalUser structure
*
* Allocated only for local clients, that are directly connected
* to \b this server with a socket.
*/
struct LocalUser
{
dlink_node lclient_node;
unsigned int registration;
unsigned int cap_client; /**< Client capabilities (from us) */
unsigned int cap_active; /**< Active capabilities (to us) */
unsigned int caps; /**< capabilities bit-field */
unsigned int operflags; /**< IRC Operator privilege flags */
unsigned int random_ping; /**< Holding a 32bit value used for PING cookies */
unsigned int serial; /**< used to enforce 1 send per nick */
time_t lasttime; /**< ...should be only LOCAL clients? --msa */
time_t firsttime; /**< time client was created */
time_t since; /**< last time we parsed something */
time_t last_knock; /**< time of last knock */
time_t last_join_time; /**< when this client last
joined a channel */
time_t last_leave_time; /**< when this client last
* left a channel */
int join_leave_count; /**< count of JOIN/LEAVE in less than
MIN_JOIN_LEAVE_TIME seconds */
int oper_warn_count_down; /**< warn opers of this possible
spambot every time this gets to 0 */
time_t last_caller_id_time;
time_t first_received_message_time;
time_t last_nick_change;
time_t last_privmsg; /**< Last time we got a PRIVMSG */
time_t last_away; /**< Away since... */
int received_number_of_privmsgs;
unsigned int number_of_nick_changes;
struct ListTask *list_task;
struct dbuf_queue buf_sendq;
struct dbuf_queue buf_recvq;
struct {
unsigned int messages; /**< Statistics: protocol messages sent/received */
uint64_t bytes; /**< Statistics: total bytes sent/received */
} recv, send;
struct AuthRequest auth;
struct Listener *listener; /**< listener accepted from */
dlink_list acceptlist; /**< clients I'll allow to talk to me */
dlink_list watches; /**< chain of Watch pointer blocks */
dlink_list confs; /**< Configuration record associated */
dlink_list invited; /**< chain of invite pointer blocks */
struct irc_ssaddr ip;
int aftype; /**< Makes life easier for DNS res in IPV6 */
int country_id; /**< ID corresponding to a ISO 3166 country code */
char *passwd;
fde_t fd;
/* Anti-flood stuff. We track how many messages were parsed and how
* many we were allowed in the current second, and apply a simple
* decay to avoid flooding.
* -- adrian
*/
int allow_read; /**< how many we're allowed to read in this second */
int sent_parsed; /**< how many messages we've parsed in this second */
char* response; /**< expected response from client */
char* auth_oper; /**< Operator to become if they supply the response.*/
};
/*! \brief Client structure */
struct Client
{
dlink_node node;
dlink_node lnode; /**< Used for Server->servers/users */
struct LocalUser *localClient;
struct Client *hnext; /**< For client hash table lookups by name */
struct Client *idhnext; /**< For SID hash table lookups by sid */
struct Server *serv; /**< ...defined, if this is a server */
struct Client *servptr; /**< Points to server this Client is on */
struct Client *from; /**< == self, if Local Client, *NEVER* NULL! */
time_t tsinfo; /**< TS on the nick, SVINFO on server */
unsigned int flags; /**< client flags */
unsigned int umodes; /**< opers, normal users subset */
unsigned int hopcount; /**< number of servers to this 0 = local */
unsigned int status; /**< Client type */
unsigned int handler; /**< Handler index */
dlink_list whowas;
dlink_list channel; /**< chain of channel pointer blocks */
char away[AWAYLEN + 1]; /**< Client's AWAY message. Can be set/unset via AWAY command */
char name[HOSTLEN + 1]; /**< unique name for a client nick or host */
char svid[HOSTLEN + 1]; /**< Services ID. XXX: Going with HOSTLEN for now. NICKLEN might be too small
if dealing with timestamps */
char id[IDLEN + 1]; /**< client ID, unique ID per client */
/*
* client->username is the username from ident or the USER message,
* If the client is idented the USER message is ignored, otherwise
* the username part of the USER message is put here prefixed with a
* tilde depending on the auth{} block. Once a client has registered,
* this field should be considered read-only.
*/
char username[USERLEN + 1]; /* client's username */
/*
* client->host contains the resolved name or ip address
* as a string for the user, it may be fiddled with for oper spoofing etc.
* once it's changed the *real* address goes away. This should be
* considered a read-only field after the client has registered.
*/
char host[HOSTLEN + 1]; /* client's hostname */
/*
* client->info for unix clients will normally contain the info from the
* gcos field in /etc/passwd but anything can go here.
*/
char info[REALLEN + 1]; /* Free form additional client info */
/*
* client->sockhost contains the ip address gotten from the socket as a
* string, this field should be considered read-only once the connection
* has been made. (set in s_bsd.c only)
*/
char sockhost[HOSTIPLEN + 1]; /* This is the host name from the
socket ip address as string */
char *certfp;
};
extern struct Client me;
extern dlink_list listing_client_list;
extern dlink_list global_client_list;
extern dlink_list unknown_list; /* unknown clients ON this server only */
extern dlink_list local_client_list; /* local clients only ON this server */
extern dlink_list serv_list; /* local servers to this server ONLY */
extern dlink_list global_serv_list; /* global servers on the network */
extern dlink_list oper_list; /* our opers, duplicated in local_client_list */
extern int accept_message(struct Client *, struct Client *);
extern unsigned int idle_time_get(const struct Client *, const struct Client *);
extern struct split_nuh_item *find_accept(const char *, const char *,
const char *, struct Client *,
int (*)(const char *, const char *));
extern void del_accept(struct split_nuh_item *, struct Client *);
extern void del_all_accepts(struct Client *);
extern void exit_client(struct Client *, struct Client *, const char *);
extern void check_conf_klines(void);
extern void client_init(void);
extern void dead_link_on_write(struct Client *, int);
extern void dead_link_on_read(struct Client *, int);
extern void exit_aborted_clients(void);
extern void free_exited_clients(void);
extern struct Client *make_client(struct Client *);
extern struct Client *find_chasing(struct Client *, const char *, int *const);
extern struct Client *find_person(const struct Client *const, const char *);
extern const char *get_client_name(const struct Client *, enum addr_mask_type);
#endif /* INCLUDED_client_h */
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