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construct/include/client.h
Simon Arlott 762468f85d
authd: wait until the ssl connection is "open" before reading 
It's useful to allow authd to run in parallel with ssl negotiation,
but if the ssld connection has plaintext data ready for reading
there's a race condition between authd calling read_packet() and
ssl_process_certfp() storing the certificate fingerprint. This
scenario would be bad for a server connecting because fingerprint
verification will fail.

Allow either operation to complete first, but wait until
ssl_process_open_fd() calls the ssl open callback before calling
read_packet().
2016-04-25 21:43:21 +01:00

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/*
* charybdis: A useful ircd.
* client.h: The ircd client header.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2004 ircd-ratbox development team
* Copyright (C) 2005 William Pitcock and Jilles Tjoelker
*
* 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
*/
#ifndef INCLUDED_client_h
#define INCLUDED_client_h
#include "defaults.h"
#include "ircd_defs.h"
#include "channel.h"
#include "dns.h"
#include "snomask.h"
#include "match.h"
#include "ircd.h"
#include "privilege.h"
/* other structs */
struct Blacklist;
/* we store ipv6 ips for remote clients, so this needs to be v6 always */
#define HOSTIPLEN 53 /* sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255.ipv6") */
#define PASSWDLEN 128
#define CIPHERKEYLEN 64 /* 512bit */
#define CLIENT_BUFSIZE 512 /* must be at least 512 bytes */
#define IDLEN 10
#define TGCHANGE_NUM 10 /* how many targets we keep track of */
#define TGCHANGE_REPLY 5 /* how many reply targets */
#define TGCHANGE_INITIAL 10 /* initial free targets (normal) */
#define TGCHANGE_INITIAL_LOW 4 /* initial free targets (possible spambot) */
/*
* pre declare structs
*/
struct ConfItem;
struct Whowas;
struct DNSReply;
struct Listener;
struct Client;
struct User;
struct Server;
struct LocalUser;
struct PreClient;
struct ListClient;
struct scache_entry;
struct ws_ctl;
typedef int SSL_OPEN_CB(struct Client *, int status);
/*
* Client structures
*/
struct User
{
rb_dlink_list channel; /* chain of channel pointer blocks */
rb_dlink_list invited; /* chain of invite pointer blocks */
char *away; /* pointer to away message */
int refcnt; /* Number of times this block is referenced */
char suser[NICKLEN+1];
};
struct Server
{
struct User *user; /* who activated this connection */
char by[NICKLEN];
rb_dlink_list servers;
rb_dlink_list users;
int caps; /* capabilities bit-field */
char *fullcaps;
struct scache_entry *nameinfo;
};
struct ZipStats
{
unsigned long long in;
unsigned long long in_wire;
unsigned long long out;
unsigned long long out_wire;
double in_ratio;
double out_ratio;
};
struct Client
{
rb_dlink_node node;
rb_dlink_node lnode;
struct User *user; /* ...defined, if this is a User */
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! */
rb_dlink_list whowas_clist;
time_t tsinfo; /* TS on the nick, SVINFO on server */
unsigned int umodes; /* opers, normal users subset */
uint64_t flags; /* client flags */
unsigned int snomask; /* server notice mask */
int hopcount; /* number of servers to this 0 = local */
unsigned short status; /* Client type */
unsigned char handler; /* Handler index */
unsigned long serial; /* used to enforce 1 send per nick */
/* client->name is the unique name for a client nick or host */
char name[HOSTLEN + 1];
/*
* 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 I:line, 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.
*/
char host[HOSTLEN + 1]; /* client's hostname */
char orighost[HOSTLEN + 1]; /* original hostname (before dynamic spoofing) */
char sockhost[HOSTIPLEN + 1]; /* clients ip */
char info[REALLEN + 1]; /* Free form additional client info */
char id[IDLEN]; /* UID/SID, unique on the network */
/* list of who has this client on their allow list, its counterpart
* is in LocalUser
*/
rb_dlink_list on_allow_list;
time_t first_received_message_time;
int received_number_of_privmsgs;
int flood_noticed;
struct LocalUser *localClient;
struct PreClient *preClient;
time_t large_ctcp_sent; /* ctcp to large group sent, relax flood checks */
char *certfp; /* client certificate fingerprint */
};
struct LocalUser
{
rb_dlink_node tnode; /* This is the node for the local list type the client is on */
rb_dlink_list connids; /* This is the list of connids to free */
/*
* The following fields are allocated only for local clients
* (directly connected to *this* server with a socket.
*/
/* Anti flooding part, all because of lamers... */
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 lasttime; /* last time we parsed something */
time_t firsttime; /* time client was created */
/* Send and receive linebuf queues .. */
buf_head_t buf_sendq;
buf_head_t buf_recvq;
/*
* we want to use unsigned int here so the sizes have a better chance of
* staying the same on 64 bit machines. The current trend is to use
* I32LP64, (32 bit ints, 64 bit longs and pointers) and since ircd
* will NEVER run on an operating system where ints are less than 32 bits,
* it's a relatively safe bet to use ints. Since right shift operations are
* performed on these, it's not safe to allow them to become negative,
* which is possible for long running server connections. Unsigned values
* generally overflow gracefully. --Bleep
*
* We have modern conveniences. Let's use uint32_t. --Elizafox
*/
uint32_t sendM; /* Statistics: protocol messages send */
uint32_t sendK; /* Statistics: total k-bytes send */
uint32_t receiveM; /* Statistics: protocol messages received */
uint32_t receiveK; /* Statistics: total k-bytes received */
uint16_t sendB; /* counters to count upto 1-k lots of bytes */
uint16_t receiveB; /* sent and received. */
struct Listener *listener; /* listener accepted from */
struct ConfItem *att_conf; /* attached conf */
struct server_conf *att_sconf;
struct rb_sockaddr_storage ip;
time_t last_nick_change;
int number_of_nick_changes;
/*
* XXX - there is no reason to save this, it should be checked when it's
* received and not stored, this is not used after registration
*
* agreed. lets get rid of it someday! --nenolod
*/
char *passwd;
char *auth_user;
char *opername; /* name of operator{} block being used or tried (challenge) */
char *challenge;
char *fullcaps;
char *cipher_string;
int caps; /* capabilities bit-field */
rb_fde_t *F; /* >= 0, for local clients */
/* time challenge response is valid for */
time_t chal_time;
time_t next_away; /* Don't allow next away before... */
time_t last;
/* clients allowed to talk through +g */
rb_dlink_list allow_list;
/* nicknames theyre monitoring */
rb_dlink_list monitor_list;
/*
* 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 sent_parsed; /* how many messages we've parsed in this second */
time_t last_knock; /* time of last knock */
unsigned long random_ping;
/* target change stuff */
/* targets we're aware of (fnv32(use_id(target_p))):
* 0..TGCHANGE_NUM-1 regular slots
* TGCHANGE_NUM..TGCHANGE_NUM+TGCHANGE_REPLY-1 reply slots
*/
uint32_t targets[TGCHANGE_NUM + TGCHANGE_REPLY];
unsigned int targets_free; /* free targets */
time_t target_last; /* last time we cleared a slot */
/* ratelimit items */
time_t ratelimit;
unsigned int join_who_credits;
struct ListClient *safelist_data;
char *mangledhost; /* non-NULL if host mangling module loaded and
applicable to this client */
struct _ssl_ctl *ssl_ctl; /* which ssl daemon we're associate with */
struct _ssl_ctl *z_ctl; /* second ctl for ssl+zlib */
struct ws_ctl *ws_ctl; /* ctl for wsockd */
SSL_OPEN_CB *ssl_callback; /* ssl connection is now open */
uint32_t localflags;
struct ZipStats *zipstats; /* zipstats */
uint16_t cork_count; /* used for corking/uncorking connections */
struct ev_entry *event; /* used for associated events */
struct PrivilegeSet *privset; /* privset... */
char sasl_agent[IDLEN];
unsigned char sasl_out;
unsigned char sasl_complete;
unsigned int sasl_messages;
unsigned int sasl_failures;
time_t sasl_next_retry;
};
#define AUTHC_F_DEFERRED 0x01
#define AUTHC_F_COMPLETE 0x02
struct AuthClient
{
uint32_t cid; /* authd id */
time_t timeout; /* When to terminate authd query */
bool accepted; /* did authd accept us? */
char cause; /* rejection cause */
char *data; /* reason data */
char *reason; /* reason we were rejected */
int flags;
};
struct PreClient
{
char spoofnick[NICKLEN + 1];
char spoofuser[USERLEN + 1];
char spoofhost[HOSTLEN + 1];
struct AuthClient auth;
struct rb_sockaddr_storage lip; /* address of our side of the connection */
};
struct ListClient
{
char *chname;
unsigned int users_min, users_max;
time_t created_min, created_max, topic_min, topic_max;
int operspy;
};
/*
* status macros.
*/
#define STAT_CONNECTING 0x01
#define STAT_HANDSHAKE 0x02
#define STAT_ME 0x04
#define STAT_UNKNOWN 0x08
#define STAT_REJECT 0x10
#define STAT_SERVER 0x20
#define STAT_CLIENT 0x40
#define IsRegisteredUser(x) ((x)->status == STAT_CLIENT)
#define IsRegistered(x) (((x)->status > STAT_UNKNOWN) && ((x)->status != STAT_REJECT))
#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 IsReject(x) ((x)->status == STAT_REJECT)
#define IsAnyServer(x) (IsServer(x) || IsHandshake(x) || IsConnecting(x))
#define IsOper(x) ((x)->umodes & UMODE_OPER)
#define IsAdmin(x) ((x)->umodes & UMODE_ADMIN)
#define SetReject(x) {(x)->status = STAT_REJECT; \
(x)->handler = UNREGISTERED_HANDLER; }
#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 = IsOper((x)) ? \
OPER_HANDLER : CLIENT_HANDLER; }
#define SetRemoteClient(x) {(x)->status = STAT_CLIENT; \
(x)->handler = RCLIENT_HANDLER; }
#define STAT_CLIENT_PARSE (STAT_UNKNOWN | STAT_CLIENT)
#define STAT_SERVER_PARSE (STAT_CONNECTING | STAT_HANDSHAKE | STAT_SERVER)
#define PARSE_AS_CLIENT(x) ((x)->status & STAT_CLIENT_PARSE)
#define PARSE_AS_SERVER(x) ((x)->status & STAT_SERVER_PARSE)
/*
* ts stuff
*/
#define TS_CURRENT 6
#define TS_MIN 6
#define TS_DOESTS 0x10000000
#define DoesTS(x) ((x)->tsinfo & TS_DOESTS)
#define has_id(source) ((source)->id[0] != '\0')
#define use_id(source) ((source)->id[0] != '\0' ? (source)->id : (source)->name)
/* if target is TS6, use id if it has one, else name */
#define get_id(source, target) ((IsServer(target->from) && has_id(target->from)) ? \
use_id(source) : (source)->name)
/* housekeeping flags */
#define FLAGS_PINGSENT 0x00000001 /* Unreplied ping sent */
#define FLAGS_DEAD 0x00000002 /* Local socket is dead--Exiting soon */
#define FLAGS_KILLED 0x00000004 /* Prevents "QUIT" from being sent for this */
#define FLAGS_SENTUSER 0x00000008 /* Client sent a USER command. */
#define FLAGS_CLICAP 0x00000010 /* In CAP negotiation, wait for CAP END */
#define FLAGS_CLOSING 0x00000020 /* set when closing to suppress errors */
#define FLAGS_PING_COOKIE 0x00000040 /* has sent ping cookie */
#define FLAGS_GOTID 0x00000080 /* successful ident lookup achieved */
#define FLAGS_FLOODDONE 0x00000100 /* flood grace period over / reported */
#define FLAGS_NORMALEX 0x00000200 /* Client exited normally */
#define FLAGS_MARK 0x00000400 /* marked client */
#define FLAGS_HIDDEN 0x00000800 /* hidden server */
#define FLAGS_EOB 0x00001000 /* EOB */
#define FLAGS_MYCONNECT 0x00002000 /* MyConnect */
#define FLAGS_IOERROR 0x00004000 /* IO error */
#define FLAGS_SERVICE 0x00008000 /* network service */
#define FLAGS_TGCHANGE 0x00010000 /* we're allowed to clear something */
#define FLAGS_DYNSPOOF 0x00020000 /* dynamic spoof, only opers see ip */
#define FLAGS_TGEXCESSIVE 0x00040000 /* whether the client has attemped to change targets excessively fast */
#define FLAGS_CLICAP_DATA 0x00080000 /* requested CAP LS 302 */
#define FLAGS_EXTENDCHANS 0x00100000
#define FLAGS_EXEMPTRESV 0x00200000
#define FLAGS_EXEMPTKLINE 0x00400000
#define FLAGS_EXEMPTFLOOD 0x00800000
#define FLAGS_IP_SPOOFING 0x01000000
#define FLAGS_EXEMPTSPAMBOT 0x02000000
#define FLAGS_EXEMPTSHIDE 0x04000000
#define FLAGS_EXEMPTJUPE 0x08000000
/* flags for local clients, this needs stuff moved from above to here at some point */
#define LFLAGS_SSL 0x00000001
#define LFLAGS_FLUSH 0x00000002
#define LFLAGS_CORK 0x00000004
/* umodes, settable flags */
/* lots of this moved to snomask -- jilles */
#define UMODE_SERVNOTICE 0x0001 /* server notices */
#define UMODE_WALLOP 0x0002 /* send wallops to them */
#define UMODE_OPERWALL 0x0004 /* Operwalls */
#define UMODE_INVISIBLE 0x0008 /* makes user invisible */
#define UMODE_CALLERID 0x0010 /* block unless caller id's */
#define UMODE_LOCOPS 0x0020 /* show locops */
#define UMODE_SERVICE 0x0040
#define UMODE_DEAF 0x0080
#define UMODE_NOFORWARD 0x0100 /* don't forward */
#define UMODE_REGONLYMSG 0x0200 /* only allow logged in users to msg */
/* user information flags, only settable by remote mode or local oper */
#define UMODE_OPER 0x1000 /* Operator */
#define UMODE_ADMIN 0x2000 /* Admin on server */
#define UMODE_SSLCLIENT 0x4000 /* using SSL */
#define DEFAULT_OPER_UMODES (UMODE_SERVNOTICE | UMODE_OPERWALL | \
UMODE_WALLOP | UMODE_LOCOPS)
#define DEFAULT_OPER_SNOMASK SNO_GENERAL
/*
* flags macros.
*/
#define IsPerson(x) (IsClient(x) && (x)->user != NULL)
#define HasServlink(x) ((x)->flags & FLAGS_SERVLINK)
#define SetServlink(x) ((x)->flags |= FLAGS_SERVLINK)
#define MyConnect(x) ((x)->flags & FLAGS_MYCONNECT)
#define SetMyConnect(x) ((x)->flags |= FLAGS_MYCONNECT)
#define ClearMyConnect(x) ((x)->flags &= ~FLAGS_MYCONNECT)
#define MyClient(x) (MyConnect(x) && IsClient(x))
#define SetMark(x) ((x)->flags |= FLAGS_MARK)
#define ClearMark(x) ((x)->flags &= ~FLAGS_MARK)
#define IsMarked(x) ((x)->flags & FLAGS_MARK)
#define SetHidden(x) ((x)->flags |= FLAGS_HIDDEN)
#define ClearHidden(x) ((x)->flags &= ~FLAGS_HIDDEN)
#define IsHidden(x) ((x)->flags & FLAGS_HIDDEN)
#define ClearEob(x) ((x)->flags &= ~FLAGS_EOB)
#define SetEob(x) ((x)->flags |= FLAGS_EOB)
#define HasSentEob(x) ((x)->flags & FLAGS_EOB)
#define IsDead(x) ((x)->flags & FLAGS_DEAD)
#define SetDead(x) ((x)->flags |= FLAGS_DEAD)
#define IsClosing(x) ((x)->flags & FLAGS_CLOSING)
#define SetClosing(x) ((x)->flags |= FLAGS_CLOSING)
#define IsIOError(x) ((x)->flags & FLAGS_IOERROR)
#define SetIOError(x) ((x)->flags |= FLAGS_IOERROR)
#define IsAnyDead(x) (IsIOError(x) || IsDead(x) || IsClosing(x))
#define IsTGChange(x) ((x)->flags & FLAGS_TGCHANGE)
#define SetTGChange(x) ((x)->flags |= FLAGS_TGCHANGE)
#define ClearTGChange(x) ((x)->flags &= ~FLAGS_TGCHANGE)
#define IsDynSpoof(x) ((x)->flags & FLAGS_DYNSPOOF)
#define SetDynSpoof(x) ((x)->flags |= FLAGS_DYNSPOOF)
#define ClearDynSpoof(x) ((x)->flags &= ~FLAGS_DYNSPOOF)
#define IsTGExcessive(x) ((x)->flags & FLAGS_TGEXCESSIVE)
#define SetTGExcessive(x) ((x)->flags |= FLAGS_TGEXCESSIVE)
#define ClearTGExcessive(x) ((x)->flags &= ~FLAGS_TGEXCESSIVE)
/* local flags */
#define IsSSL(x) ((x)->localClient->localflags & LFLAGS_SSL)
#define SetSSL(x) ((x)->localClient->localflags |= LFLAGS_SSL)
#define ClearSSL(x) ((x)->localClient->localflags &= ~LFLAGS_SSL)
#define IsFlush(x) ((x)->localClient->localflags & LFLAGS_FLUSH)
#define SetFlush(x) ((x)->localClient->localflags |= LFLAGS_FLUSH)
#define ClearFlush(x) ((x)->localClient->localflags &= ~LFLAGS_FLUSH)
/* oper flags */
#define MyOper(x) (MyConnect(x) && IsOper(x))
#define SetOper(x) {(x)->umodes |= UMODE_OPER; \
if (MyClient((x))) (x)->handler = OPER_HANDLER;}
#define ClearOper(x) {(x)->umodes &= ~(UMODE_OPER|UMODE_ADMIN); \
if (MyClient((x)) && !IsOper((x)) && !IsServer((x))) \
(x)->handler = CLIENT_HANDLER; }
/* umode flags */
#define IsInvisible(x) ((x)->umodes & UMODE_INVISIBLE)
#define SetInvisible(x) ((x)->umodes |= UMODE_INVISIBLE)
#define ClearInvisible(x) ((x)->umodes &= ~UMODE_INVISIBLE)
#define IsSSLClient(x) ((x)->umodes & UMODE_SSLCLIENT)
#define SetSSLClient(x) ((x)->umodes |= UMODE_SSLCLIENT)
#define ClearSSLClient(x) ((x)->umodes &= ~UMODE_SSLCLIENT)
#define SendWallops(x) ((x)->umodes & UMODE_WALLOP)
#define SendLocops(x) ((x)->umodes & UMODE_LOCOPS)
#define SendServNotice(x) ((x)->umodes & UMODE_SERVNOTICE)
#define SendOperwall(x) ((x)->umodes & UMODE_OPERWALL)
#define IsSetCallerId(x) ((x)->umodes & UMODE_CALLERID)
#define IsService(x) ((x)->umodes & UMODE_SERVICE)
#define IsDeaf(x) ((x)->umodes & UMODE_DEAF)
#define IsNoForward(x) ((x)->umodes & UMODE_NOFORWARD)
#define IsSetRegOnlyMsg(x) ((x)->umodes & UMODE_REGONLYMSG)
#define SetGotId(x) ((x)->flags |= FLAGS_GOTID)
#define IsGotId(x) (((x)->flags & FLAGS_GOTID) != 0)
#define IsExemptKline(x) ((x)->flags & FLAGS_EXEMPTKLINE)
#define SetExemptKline(x) ((x)->flags |= FLAGS_EXEMPTKLINE)
#define IsExemptFlood(x) ((x)->flags & FLAGS_EXEMPTFLOOD)
#define SetExemptFlood(x) ((x)->flags |= FLAGS_EXEMPTFLOOD)
#define IsExemptSpambot(x) ((x)->flags & FLAGS_EXEMPTSPAMBOT)
#define SetExemptSpambot(x) ((x)->flags |= FLAGS_EXEMPTSPAMBOT)
#define IsExemptShide(x) ((x)->flags & FLAGS_EXEMPTSHIDE)
#define SetExemptShide(x) ((x)->flags |= FLAGS_EXEMPTSHIDE)
#define IsExemptJupe(x) ((x)->flags & FLAGS_EXEMPTJUPE)
#define SetExemptJupe(x) ((x)->flags |= FLAGS_EXEMPTJUPE)
#define IsExemptResv(x) ((x)->flags & FLAGS_EXEMPTRESV)
#define SetExemptResv(x) ((x)->flags |= FLAGS_EXEMPTRESV)
#define IsIPSpoof(x) ((x)->flags & FLAGS_IP_SPOOFING)
#define SetIPSpoof(x) ((x)->flags |= FLAGS_IP_SPOOFING)
#define IsExtendChans(x) ((x)->flags & FLAGS_EXTENDCHANS)
#define SetExtendChans(x) ((x)->flags |= FLAGS_EXTENDCHANS)
/* for local users: flood grace period is over
* for servers: mentioned in networknotice.c notice
*/
#define IsFloodDone(x) ((x)->flags & FLAGS_FLOODDONE)
#define SetFloodDone(x) ((x)->flags |= FLAGS_FLOODDONE)
/* These also operate on the uplink from which it came */
#define IsCork(x) (MyConnect(x) ? (x)->localClient->cork_count : (x)->from->localClient->cork_count)
#define SetCork(x) (MyConnect(x) ? (x)->localClient->cork_count++ : (x)->from->localClient->cork_count++ )
#define ClearCork(x) (MyConnect(x) ? (x)->localClient->cork_count-- : (x)->from->localClient->cork_count--)
/*
* definitions for get_client_name
*/
#define HIDE_IP 0
#define SHOW_IP 1
#define MASK_IP 2
extern void check_banned_lines(void);
extern void check_klines_event(void *unused);
extern void check_klines(void);
extern void check_dlines(void);
extern void check_xlines(void);
extern void resv_nick_fnc(const char *mask, const char *reason, int temp_time);
extern const char *get_client_name(struct Client *client, int show_ip);
extern const char *log_client_name(struct Client *, int);
extern int is_remote_connect(struct Client *);
extern void init_client(void);
extern struct Client *make_client(struct Client *from);
extern void free_pre_client(struct Client *client);
extern void free_client(struct Client *client);
extern int exit_client(struct Client *, struct Client *, struct Client *, const char *);
extern void error_exit_client(struct Client *, int);
extern void count_local_client_memory(size_t * count, size_t * memory);
extern void count_remote_client_memory(size_t * count, size_t * memory);
extern int clean_nick(const char *, int loc_client);
extern struct Client *find_chasing(struct Client *, const char *, int *);
extern struct Client *find_person(const char *);
extern struct Client *find_named_person(const char *);
extern struct Client *next_client(struct Client *, const char *);
#define accept_message(s, t) ((s) == (t) || (rb_dlinkFind((s), &((t)->localClient->allow_list))))
extern void del_all_accepts(struct Client *client_p);
extern void dead_link(struct Client *client_p, int sendqex);
extern int show_ip(struct Client *source_p, struct Client *target_p);
extern int show_ip_conf(struct ConfItem *aconf, struct Client *source_p);
extern int show_ip_whowas(struct Whowas *whowas, struct Client *source_p);
extern void free_user(struct User *, struct Client *);
extern struct User *make_user(struct Client *);
extern struct Server *make_server(struct Client *);
extern void close_connection(struct Client *);
extern void init_uid(void);
extern char *generate_uid(void);
void allocate_away(struct Client *);
void free_away(struct Client *);
uint32_t connid_get(struct Client *client_p);
void connid_put(uint32_t id);
void client_release_connids(struct Client *client_p);
#endif /* INCLUDED_client_h */
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