trunk/include/server.h

/*
 *  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
 *
 *  $Id$
 */

#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_IE          0x00000010 /* Can do invite exceptions            */
#define CAP_EOB         0x00000020 /* Can do EOB message                  */
#define CAP_KLN         0x00000040 /* Can do KLINE message                */
#define CAP_GLN         0x00000080 /* Can do GLINE message                */
#define CAP_HUB         0x00000100 /* This server is a HUB                */
#define CAP_TS6         0x00000200 /* Can do TS6                          */
#define CAP_ZIP         0x00000400 /* Can do ZIPlinks                     */
#define CAP_ENC         0x00000800 /* Can do ENCrypted links              */
#define CAP_KNOCK       0x00001000 /* supports KNOCK                      */
#define CAP_TB          0x00002000 /* supports TB                         */
#define CAP_UNKLN       0x00004000 /* Can do UNKLINE message              */
#define CAP_CLUSTER     0x00008000 /* supports server clustering          */
#define CAP_ENCAP       0x00010000 /* supports ENCAP message              */
#define CAP_HOPS        0x00020000 /* supports HALFOPS                    */
#define CAP_TBURST      0x00040000 /* 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

/*
 * 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 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 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 struct EncCapability *check_cipher(struct Client *, struct AccessItem *);
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 */

Revision:	885
Committed:	Wed Oct 31 18:09:24 2007 UTC (17 years, 9 months ago) by michael
Content type:	text/x-chdr
Original Path:	*ircd-hybrid-7.2/include/s_serv.h*
File size:	9649 byte(s)
Log Message:	- Removed LazyLinks in 7.2 to stop people from asking why we keep broken code for half a decade. LL will be implemented in a smarter fashion in due time
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* s_serv.h: A header for the server functions.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#ifndef INCLUDED_serv_h
26			#define INCLUDED_serv_h
27			#include "setup.h"
28
29			/* collect ziplinks compression ratios/etc every minute */
30			#define ZIPSTATS_TIME 60
31
32			struct ConfItem;
33
34			/*
35			* number of seconds to wait after server starts up, before
36			* starting try_connections()
37			* TOO SOON and you can nick collide like crazy.
38			*/
39			#define STARTUP_CONNECTIONS_TIME 60
40
41			struct Client;
42			struct AccessItem;
43			struct Channel;
44
45			/* Capabilities */
46			struct Capability
47			{
48			dlink_node node;
49			char name; / name of capability */
50			unsigned int cap; /* mask value */
51			};
52
53			#define CAP_CAP 0x00000001 /* received a CAP to begin with */
54			#define CAP_QS 0x00000002 /* Can handle quit storm removal */
55			#define CAP_EX 0x00000004 /* Can do channel +e exemptions */
56			#define CAP_CHW 0x00000008 /* Can do channel wall @# */
57	michael	885	#define CAP_IE 0x00000010 /* Can do invite exceptions */
58			#define CAP_EOB 0x00000020 /* Can do EOB message */
59			#define CAP_KLN 0x00000040 /* Can do KLINE message */
60			#define CAP_GLN 0x00000080 /* Can do GLINE message */
61			#define CAP_HUB 0x00000100 /* This server is a HUB */
62			#define CAP_TS6 0x00000200 /* Can do TS6 */
63			#define CAP_ZIP 0x00000400 /* Can do ZIPlinks */
64			#define CAP_ENC 0x00000800 /* Can do ENCrypted links */
65			#define CAP_KNOCK 0x00001000 /* supports KNOCK */
66			#define CAP_TB 0x00002000 /* supports TB */
67			#define CAP_UNKLN 0x00004000 /* Can do UNKLINE message */
68			#define CAP_CLUSTER 0x00008000 /* supports server clustering */
69			#define CAP_ENCAP 0x00010000 /* supports ENCAP message */
70			#define CAP_HOPS 0x00020000 /* supports HALFOPS */
71			#define CAP_TBURST 0x00040000 /* supports TBURST */
72	adx	30
73			#ifdef HAVE_LIBZ
74			#define CAP_ZIP_SUPPORTED CAP_ZIP
75			#else
76			#define CAP_ZIP_SUPPORTED 0
77			#endif
78
79			#ifdef HAVE_LIBCRYPTO
80			struct EncCapability
81			{
82			const char name; / name of capability (cipher name) */
83			unsigned int cap; /* mask value */
84			int keylen; /* keylength (bytes) */
85			int cipherid; /* ID number of cipher type (BF, IDEA, etc.) */
86			};
87
88			/*
89			* Cipher ID numbers
90			* - DO NOT CHANGE THESE! Otherwise you break backwards compatibility
91			* If you wish to add a new cipher, append it to the list. Do not
92			* have it's value replace another.
93			*/
94			#define CIPHER_BF 1
95			#define CIPHER_CAST 2
96			#define CIPHER_DES 3
97			#define CIPHER_3DES 4
98			#define CIPHER_IDEA 5
99			#define CIPHER_RC5_8 6
100			#define CIPHER_RC5_12 7
101			#define CIPHER_RC5_16 8
102
103			/* Cipher Capabilities */
104			#define CAP_ENC_BF_128 0x00000001
105			#define CAP_ENC_BF_168 0x00000002
106			#define CAP_ENC_CAST_128 0x00000004
107			#define CAP_ENC_DES_56 0x00000008
108			#define CAP_ENC_3DES_168 0x00000010
109			#define CAP_ENC_IDEA_128 0x00000020
110			#define CAP_ENC_RC5_8_128 0x00000040
111			#define CAP_ENC_RC5_12_128 0x00000080
112			#define CAP_ENC_RC5_16_128 0x00000100
113			#define CAP_ENC_ALL 0xFFFFFFFF
114
115
116			/* */
117			#ifdef HAVE_EVP_BF_CFB
118			#define USE_CIPHER_BF 1
119			/* Check for bug handling variable length blowfish keys */
120			#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x00000000L
121			#define USE_CIPHER_BF_V 1
122			#else
123			#define USE_CIPHER_BF_V 0
124			#endif
125			#else
126			#define USE_CIPHER_BF_V 0
127			#define USE_CIPHER_BF 0
128			#endif
129			/* Cast */
130			#ifdef HAVE_EVP_CAST5_CFB
131			#define USE_CIPHER_CAST 1
132			#else
133			#define USE_CIPHER_CAST 0
134			#endif
135			/* DES */
136			#ifdef HAVE_EVP_DES_CFB
137			#define USE_CIPHER_DES 1
138			#else
139			#define USE_CIPHER_DES 0
140			#endif
141			/* 3DES */
142			#ifdef HAVE_EVP_DES_EDE3_CFB
143			#define USE_CIPHER_3DES 1
144			#else
145			#define USE_CIPHER_3DES 0
146			#endif
147			/* IDEA */
148			#ifdef HAVE_EVP_IDEA_CFB
149			#define USE_CIPHER_IDEA 1
150			#else
151			#define USE_CIPHER_IDEA 0
152			#endif
153			/* RC5 */
154			#ifdef HAVE_EVP_RC5_32_12_16_CFB
155			#define USE_CIPHER_RC5 1
156			#else
157			#define USE_CIPHER_RC5 0
158			#endif
159
160			/* Only enable ciphers supported by available version of OpenSSL */
161			#define CAP_ENC_MASK \
162			(((USE_CIPHER_BF * CAP_ENC_ALL) & CAP_ENC_BF_128) \| \
163			((USE_CIPHER_BF_V * CAP_ENC_ALL) & CAP_ENC_BF_168) \| \
164			((USE_CIPHER_CAST * CAP_ENC_ALL) & CAP_ENC_CAST_128) \| \
165			((USE_CIPHER_DES * CAP_ENC_ALL) & CAP_ENC_DES_56) \| \
166			((USE_CIPHER_3DES * CAP_ENC_ALL) & CAP_ENC_3DES_168) \| \
167			((USE_CIPHER_IDEA * CAP_ENC_ALL) & CAP_ENC_IDEA_128) \| \
168			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_8_128) \| \
169			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_12_128) \| \
170			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_16_128))
171
172			#define IsCapableEnc(x, cap) ((x)->localClient->enc_caps & (cap))
173			#define SetCapableEnc(x, cap) ((x)->localClient->enc_caps \|= (cap))
174			#define ClearCapEnc(x, cap) ((x)->localClient->enc_caps &= ~(cap))
175			#endif /* HAVE_LIBCRYPTO */
176
177			#define CHECK_SERVER_CRYPTLINK 1
178			#define CHECK_SERVER_NOCRYPTLINK 0
179
180			/*
181			* Capability macros.
182			*/
183			#define IsCapable(x, cap) ((x)->localClient->caps & (cap))
184			#define SetCapable(x, cap) ((x)->localClient->caps \|= (cap))
185			#define ClearCap(x, cap) ((x)->localClient->caps &= ~(cap))
186
187			#define SLINKCMD_SET_ZIP_OUT_LEVEL 1 /* data */
188			#define SLINKCMD_START_ZIP_OUT 2
189			#define SLINKCMD_START_ZIP_IN 3
190			#define SLINKCMD_SET_CRYPT_IN_CIPHER 4 /* data */
191			#define SLINKCMD_SET_CRYPT_IN_KEY 5 /* data */
192			#define SLINKCMD_START_CRYPT_IN 6
193			#define SLINKCMD_SET_CRYPT_OUT_CIPHER 7 /* data */
194			#define SLINKCMD_SET_CRYPT_OUT_KEY 8 /* data */
195			#define SLINKCMD_START_CRYPT_OUT 9
196			#define SLINKCMD_INJECT_RECVQ 10 /* data */
197			#define SLINKCMD_INJECT_SENDQ 11 /* data */
198			#define SLINKCMD_INIT 12
199			#define SLINKCMD_ZIPSTATS 13
200
201			#define SLINKRPL_FLAG_DATA 0x0001 /* reply has data following */
202			#define SLINKRPL_ERROR 1
203			#define SLINKRPL_ZIPSTATS 2
204
205			typedef void SlinkRplHnd(unsigned int replyid, unsigned int datalen,
206			unsigned char data, struct Client client_p);
207			struct SlinkRplDef
208			{
209			unsigned int replyid;
210			SlinkRplHnd *handler;
211			unsigned int flags;
212			};
213
214			extern struct SlinkRplDef slinkrpltab[];
215
216			/*
217			* Globals
218			*
219			*
220			* list of recognized server capabilities. "TS" is not on the list
221			* because all servers that we talk to already do TS, and the kludged
222			* extra argument to "PASS" takes care of checking that. -orabidoo
223			*/
224			extern struct Capability captab[];
225			#ifdef HAVE_LIBCRYPTO
226			extern struct EncCapability CipherTable[];
227			#endif
228
229			/*
230			* return values for hunt_server()
231			*/
232			#define HUNTED_NOSUCH (-1) /* if the hunted server is not found */
233			#define HUNTED_ISME 0 /* if this server should execute the command */
234			#define HUNTED_PASS 1 /* if message passed onwards successfully */
235
236			extern int check_server(const char , struct Client , int);
237			extern int hunt_server(struct Client , struct Client ,
238			const char , int, int, char *);
239			extern const char my_name_for_link(struct ConfItem );
240			extern void add_capability(const char *, int, int);
241			extern int delete_capability(const char *);
242			extern int find_capability(const char *);
243			extern void send_capabilities(struct Client , struct AccessItem , int, int);
244			extern void write_links_file(void *);
245			extern void server_estab(struct Client *);
246			extern void set_autoconn(struct Client , const char , int);
247			extern const char show_capabilities(struct Client );
248			extern void try_connections(void *);
249			extern void collect_zipstats(void *);
250			extern void burst_channel(struct Client client_p, struct Channel );
251			extern void sendnick_TS(struct Client , struct Client );
252			extern int serv_connect(struct AccessItem , struct Client );
253			extern struct Client find_servconn_in_progress(const char );
254			extern void cryptlink_init(struct Client , struct ConfItem , fde_t *);
255			extern void cryptlink_regen_key(void *);
256			extern void cryptlink_error(struct Client , const char ,
257			const char , const char );
258			extern struct EncCapability check_cipher(struct Client , struct AccessItem *);
259			extern struct Server make_server(struct Client );
260
261			/* XXX don't belong in the now gone md5, but do these belong in s_serv.c ? */
262			extern int base64_block(unsigned char *, char , int);
263			extern int unbase64_block(unsigned char *, char , int);
264			#endif /* INCLUDED_s_serv_h */
265