/*
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
* s_serv.h: A header for the server functions.
*
* 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
*
* $Id: s_serv.h 327 2005-12-25 09:55:48Z michael $
*/
#ifndef INCLUDED_serv_h
#define INCLUDED_serv_h
#include "setup.h"
/* collect ziplinks compression ratios/etc every minute */
#define ZIPSTATS_TIME 60
struct ConfItem;
/*
* number of seconds to wait after server starts up, before
* starting try_connections()
* TOO SOON and you can nick collide like crazy.
*/
#define STARTUP_CONNECTIONS_TIME 60
struct Client;
struct AccessItem;
struct Channel;
/* Capabilities */
struct Capability
{
dlink_node node;
char *name; /* name of capability */
unsigned int cap; /* mask value */
};
#define CAP_CAP 0x00000001 /* received a CAP to begin with */
#define CAP_QS 0x00000002 /* Can handle quit storm removal */
#define CAP_EX 0x00000004 /* Can do channel +e exemptions */
#define CAP_CHW 0x00000008 /* Can do channel wall @# */
#define CAP_LL 0x00000010 /* Can do lazy links */
#define CAP_IE 0x00000020 /* Can do invite exceptions */
#define CAP_EOB 0x00000040 /* Can do EOB message */
#define CAP_KLN 0x00000080 /* Can do KLINE message */
#define CAP_GLN 0x00000100 /* Can do GLINE message */
#define CAP_HUB 0x00000200 /* This server is a HUB */
#define CAP_TS6 0x00000400 /* Can do TS6 */
#define CAP_ZIP 0x00000800 /* Can do ZIPlinks */
#define CAP_ENC 0x00001000 /* Can do ENCrypted links */
#define CAP_KNOCK 0x00002000 /* supports KNOCK */
#define CAP_TB 0x00004000 /* supports TB */
#define CAP_UNKLN 0x00008000 /* Can do UNKLINE message */
#define CAP_CLUSTER 0x00010000 /* supports server clustering */
#define CAP_ENCAP 0x00020000 /* supports ENCAP message */
#define CAP_HOPS 0x00040000 /* supports HALFOPS */
#define CAP_TBURST 0x00080000 /* supports TBURST */
#ifdef HAVE_LIBZ
#define CAP_ZIP_SUPPORTED CAP_ZIP
#else
#define CAP_ZIP_SUPPORTED 0
#endif
#ifdef HAVE_LIBCRYPTO
struct EncCapability
{
const char *name; /* name of capability (cipher name) */
unsigned int cap; /* mask value */
int keylen; /* keylength (bytes) */
int cipherid; /* ID number of cipher type (BF, IDEA, etc.) */
};
/*
* Cipher ID numbers
* - DO NOT CHANGE THESE! Otherwise you break backwards compatibility
* If you wish to add a new cipher, append it to the list. Do not
* have it's value replace another.
*/
#define CIPHER_BF 1
#define CIPHER_CAST 2
#define CIPHER_DES 3
#define CIPHER_3DES 4
#define CIPHER_IDEA 5
#define CIPHER_RC5_8 6
#define CIPHER_RC5_12 7
#define CIPHER_RC5_16 8
/* Cipher Capabilities */
#define CAP_ENC_BF_128 0x00000001
#define CAP_ENC_BF_168 0x00000002
#define CAP_ENC_CAST_128 0x00000004
#define CAP_ENC_DES_56 0x00000008
#define CAP_ENC_3DES_168 0x00000010
#define CAP_ENC_IDEA_128 0x00000020
#define CAP_ENC_RC5_8_128 0x00000040
#define CAP_ENC_RC5_12_128 0x00000080
#define CAP_ENC_RC5_16_128 0x00000100
#define CAP_ENC_ALL 0xFFFFFFFF
/* */
#ifdef HAVE_EVP_BF_CFB
#define USE_CIPHER_BF 1
/* Check for bug handling variable length blowfish keys */
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x00000000L
#define USE_CIPHER_BF_V 1
#else
#define USE_CIPHER_BF_V 0
#endif
#else
#define USE_CIPHER_BF_V 0
#define USE_CIPHER_BF 0
#endif
/* Cast */
#ifdef HAVE_EVP_CAST5_CFB
#define USE_CIPHER_CAST 1
#else
#define USE_CIPHER_CAST 0
#endif
/* DES */
#ifdef HAVE_EVP_DES_CFB
#define USE_CIPHER_DES 1
#else
#define USE_CIPHER_DES 0
#endif
/* 3DES */
#ifdef HAVE_EVP_DES_EDE3_CFB
#define USE_CIPHER_3DES 1
#else
#define USE_CIPHER_3DES 0
#endif
/* IDEA */
#ifdef HAVE_EVP_IDEA_CFB
#define USE_CIPHER_IDEA 1
#else
#define USE_CIPHER_IDEA 0
#endif
/* RC5 */
#ifdef HAVE_EVP_RC5_32_12_16_CFB
#define USE_CIPHER_RC5 1
#else
#define USE_CIPHER_RC5 0
#endif
/* Only enable ciphers supported by available version of OpenSSL */
#define CAP_ENC_MASK \
(((USE_CIPHER_BF * CAP_ENC_ALL) & CAP_ENC_BF_128) | \
((USE_CIPHER_BF_V * CAP_ENC_ALL) & CAP_ENC_BF_168) | \
((USE_CIPHER_CAST * CAP_ENC_ALL) & CAP_ENC_CAST_128) | \
((USE_CIPHER_DES * CAP_ENC_ALL) & CAP_ENC_DES_56) | \
((USE_CIPHER_3DES * CAP_ENC_ALL) & CAP_ENC_3DES_168) | \
((USE_CIPHER_IDEA * CAP_ENC_ALL) & CAP_ENC_IDEA_128) | \
((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_8_128) | \
((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_12_128) | \
((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_16_128))
#define IsCapableEnc(x, cap) ((x)->localClient->enc_caps & (cap))
#define SetCapableEnc(x, cap) ((x)->localClient->enc_caps |= (cap))
#define ClearCapEnc(x, cap) ((x)->localClient->enc_caps &= ~(cap))
#endif /* HAVE_LIBCRYPTO */
#define CHECK_SERVER_CRYPTLINK 1
#define CHECK_SERVER_NOCRYPTLINK 0
/*
* Capability macros.
*/
#define IsCapable(x, cap) ((x)->localClient->caps & (cap))
#define SetCapable(x, cap) ((x)->localClient->caps |= (cap))
#define ClearCap(x, cap) ((x)->localClient->caps &= ~(cap))
#define SLINKCMD_SET_ZIP_OUT_LEVEL 1 /* data */
#define SLINKCMD_START_ZIP_OUT 2
#define SLINKCMD_START_ZIP_IN 3
#define SLINKCMD_SET_CRYPT_IN_CIPHER 4 /* data */
#define SLINKCMD_SET_CRYPT_IN_KEY 5 /* data */
#define SLINKCMD_START_CRYPT_IN 6
#define SLINKCMD_SET_CRYPT_OUT_CIPHER 7 /* data */
#define SLINKCMD_SET_CRYPT_OUT_KEY 8 /* data */
#define SLINKCMD_START_CRYPT_OUT 9
#define SLINKCMD_INJECT_RECVQ 10 /* data */
#define SLINKCMD_INJECT_SENDQ 11 /* data */
#define SLINKCMD_INIT 12
#define SLINKCMD_ZIPSTATS 13
#define SLINKRPL_FLAG_DATA 0x0001 /* reply has data following */
#define SLINKRPL_ERROR 1
#define SLINKRPL_ZIPSTATS 2
typedef void SlinkRplHnd(unsigned int replyid, unsigned int datalen,
unsigned char *data, struct Client *client_p);
struct SlinkRplDef
{
unsigned int replyid;
SlinkRplHnd *handler;
unsigned int flags;
};
extern struct SlinkRplDef slinkrpltab[];
/*
* Globals
*
*
* list of recognized server capabilities. "TS" is not on the list
* because all servers that we talk to already do TS, and the kludged
* extra argument to "PASS" takes care of checking that. -orabidoo
*/
extern struct Capability captab[];
#ifdef HAVE_LIBCRYPTO
extern struct EncCapability CipherTable[];
#endif
extern struct Client *uplink; /* NON NULL if leaf and is this servers uplink */
/*
* return values for hunt_server()
*/
#define HUNTED_NOSUCH (-1) /* if the hunted server is not found */
#define HUNTED_ISME 0 /* if this server should execute the command */
#define HUNTED_PASS 1 /* if message passed onwards successfully */
extern int check_server(const char *, struct Client *, int);
extern int hunt_server(struct Client *, struct Client *,
const char *, int, int, char **);
extern const char *my_name_for_link(struct ConfItem *);
extern void add_capability(const char *, int, int);
extern int delete_capability(const char *);
extern int find_capability(const char *);
extern void send_capabilities(struct Client *, struct AccessItem *, int, int);
extern void write_links_file(void *);
extern void server_estab(struct Client *);
extern void set_autoconn(struct Client *, const char *, int);
extern const char *show_capabilities(struct Client *);
extern void try_connections(void *);
extern void collect_zipstats(void *);
extern void initServerMask(void);
extern void burst_channel(struct Client *client_p, struct Channel *);
extern void sendnick_TS(struct Client *, struct Client *);
extern int serv_connect(struct AccessItem *, struct Client *);
extern struct Client *find_servconn_in_progress(const char *);
extern unsigned long nextFreeMask(void);
extern void cryptlink_init(struct Client *, struct ConfItem *, fde_t *);
extern void cryptlink_regen_key(void *);
extern void cryptlink_error(struct Client *, const char *,
const char *, const char *);
extern void remove_lazylink_flags(unsigned long);
extern void client_burst_if_needed(struct Client *, struct Client *);
extern struct EncCapability *check_cipher(struct Client *, struct AccessItem *);
extern void add_lazylinkclient(struct Client *, struct Client *);
extern struct Server *make_server(struct Client *);
/* XXX don't belong in the now gone md5, but do these belong in s_serv.c ? */
extern int base64_block(unsigned char **, char *, int);
extern int unbase64_block(unsigned char **, char *, int);
#endif /* INCLUDED_s_serv_h */
