ircd-hybrid/include/s_serv.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_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 (Topic burst)       */

#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 AccessItem *);
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 AccessItem *, 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 */

Revision:	126
Committed:	Fri Oct 14 02:41:46 2005 UTC (20 years, 10 months ago) by db
Content type:	text/x-chdr
File size:	10065 byte(s)
Log Message:	- attach/conf cleanup take 2 - Each client has now one AccessItem for its connect stored in localClient->iline - The corresponding class is now stored in localClient->class The ramifications of this move are, there is no conf list to traverse to find the AccessItem, the class is instantly available from the localClient struct without having to traverse the confs list and indirectly through the aconf. This speeds up get_sendq etc. functions. As a bonus, at least 4 fewer bytes are used in the Client struct, since a dlink list is 4 words. It does mean there is no longer a separate conf oper, which leads to the kludge of patching the clients iline into an oper conf when a client opers up. I don't think the oper flags are used after the client is opered, so the patching operation may not be necessary. - Server confs are stored in ->serv->sconf as before but attaching happens much earlier. - server hub/leaf masks continues to be a dlink list but linked from the ->serv which is only allocated for servers. - cleaned up some comments, added a comment, notably to check_server() which badly needed it. - Pass ClassItem or AccessItem etc. in when it makes more sense than passing in struct ConfItem. This simplified and clarified rebuild_cidr_class() And lo, there was a great rejoicing.
#	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			#define CAP_LL 0x00000010 /* Can do lazy links */
58			#define CAP_IE 0x00000020 /* Can do invite exceptions */
59			#define CAP_EOB 0x00000040 /* Can do EOB message */
60			#define CAP_KLN 0x00000080 /* Can do KLINE message */
61			#define CAP_GLN 0x00000100 /* Can do GLINE message */
62			#define CAP_HUB 0x00000200 /* This server is a HUB */
63			#define CAP_TS6 0x00000400 /* Can do TS6 */
64			#define CAP_ZIP 0x00000800 /* Can do ZIPlinks */
65			#define CAP_ENC 0x00001000 /* Can do ENCrypted links */
66			#define CAP_KNOCK 0x00002000 /* supports KNOCK */
67			#define CAP_TB 0x00004000 /* supports TB */
68			#define CAP_UNKLN 0x00008000 /* Can do UNKLINE message */
69			#define CAP_CLUSTER 0x00010000 /* supports server clustering */
70			#define CAP_ENCAP 0x00020000 /* supports ENCAP message */
71			#define CAP_HOPS 0x00040000 /* supports HALFOPS */
72	michael	120	#define CAP_TBURST 0x00080000 /* supports TBURST (Topic burst) */
73	adx	30
74			#ifdef HAVE_LIBZ
75			#define CAP_ZIP_SUPPORTED CAP_ZIP
76			#else
77			#define CAP_ZIP_SUPPORTED 0
78			#endif
79
80			#ifdef HAVE_LIBCRYPTO
81			struct EncCapability
82			{
83			const char name; / name of capability (cipher name) */
84			unsigned int cap; /* mask value */
85			int keylen; /* keylength (bytes) */
86			int cipherid; /* ID number of cipher type (BF, IDEA, etc.) */
87			};
88
89			/*
90			* Cipher ID numbers
91			* - DO NOT CHANGE THESE! Otherwise you break backwards compatibility
92			* If you wish to add a new cipher, append it to the list. Do not
93			* have it's value replace another.
94			*/
95			#define CIPHER_BF 1
96			#define CIPHER_CAST 2
97			#define CIPHER_DES 3
98			#define CIPHER_3DES 4
99			#define CIPHER_IDEA 5
100			#define CIPHER_RC5_8 6
101			#define CIPHER_RC5_12 7
102			#define CIPHER_RC5_16 8
103
104			/* Cipher Capabilities */
105			#define CAP_ENC_BF_128 0x00000001
106			#define CAP_ENC_BF_168 0x00000002
107			#define CAP_ENC_CAST_128 0x00000004
108			#define CAP_ENC_DES_56 0x00000008
109			#define CAP_ENC_3DES_168 0x00000010
110			#define CAP_ENC_IDEA_128 0x00000020
111			#define CAP_ENC_RC5_8_128 0x00000040
112			#define CAP_ENC_RC5_12_128 0x00000080
113			#define CAP_ENC_RC5_16_128 0x00000100
114			#define CAP_ENC_ALL 0xFFFFFFFF
115
116
117			/* */
118			#ifdef HAVE_EVP_BF_CFB
119			#define USE_CIPHER_BF 1
120			/* Check for bug handling variable length blowfish keys */
121			#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x00000000L
122			#define USE_CIPHER_BF_V 1
123			#else
124			#define USE_CIPHER_BF_V 0
125			#endif
126			#else
127			#define USE_CIPHER_BF_V 0
128			#define USE_CIPHER_BF 0
129			#endif
130			/* Cast */
131			#ifdef HAVE_EVP_CAST5_CFB
132			#define USE_CIPHER_CAST 1
133			#else
134			#define USE_CIPHER_CAST 0
135			#endif
136			/* DES */
137			#ifdef HAVE_EVP_DES_CFB
138			#define USE_CIPHER_DES 1
139			#else
140			#define USE_CIPHER_DES 0
141			#endif
142			/* 3DES */
143			#ifdef HAVE_EVP_DES_EDE3_CFB
144			#define USE_CIPHER_3DES 1
145			#else
146			#define USE_CIPHER_3DES 0
147			#endif
148			/* IDEA */
149			#ifdef HAVE_EVP_IDEA_CFB
150			#define USE_CIPHER_IDEA 1
151			#else
152			#define USE_CIPHER_IDEA 0
153			#endif
154			/* RC5 */
155			#ifdef HAVE_EVP_RC5_32_12_16_CFB
156			#define USE_CIPHER_RC5 1
157			#else
158			#define USE_CIPHER_RC5 0
159			#endif
160
161			/* Only enable ciphers supported by available version of OpenSSL */
162			#define CAP_ENC_MASK \
163			(((USE_CIPHER_BF * CAP_ENC_ALL) & CAP_ENC_BF_128) \| \
164			((USE_CIPHER_BF_V * CAP_ENC_ALL) & CAP_ENC_BF_168) \| \
165			((USE_CIPHER_CAST * CAP_ENC_ALL) & CAP_ENC_CAST_128) \| \
166			((USE_CIPHER_DES * CAP_ENC_ALL) & CAP_ENC_DES_56) \| \
167			((USE_CIPHER_3DES * CAP_ENC_ALL) & CAP_ENC_3DES_168) \| \
168			((USE_CIPHER_IDEA * CAP_ENC_ALL) & CAP_ENC_IDEA_128) \| \
169			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_8_128) \| \
170			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_12_128) \| \
171			((USE_CIPHER_RC5 * CAP_ENC_ALL) & CAP_ENC_RC5_16_128))
172
173			#define IsCapableEnc(x, cap) ((x)->localClient->enc_caps & (cap))
174			#define SetCapableEnc(x, cap) ((x)->localClient->enc_caps \|= (cap))
175			#define ClearCapEnc(x, cap) ((x)->localClient->enc_caps &= ~(cap))
176			#endif /* HAVE_LIBCRYPTO */
177
178			#define CHECK_SERVER_CRYPTLINK 1
179			#define CHECK_SERVER_NOCRYPTLINK 0
180
181			/*
182			* Capability macros.
183			*/
184			#define IsCapable(x, cap) ((x)->localClient->caps & (cap))
185			#define SetCapable(x, cap) ((x)->localClient->caps \|= (cap))
186			#define ClearCap(x, cap) ((x)->localClient->caps &= ~(cap))
187
188			#define SLINKCMD_SET_ZIP_OUT_LEVEL 1 /* data */
189			#define SLINKCMD_START_ZIP_OUT 2
190			#define SLINKCMD_START_ZIP_IN 3
191			#define SLINKCMD_SET_CRYPT_IN_CIPHER 4 /* data */
192			#define SLINKCMD_SET_CRYPT_IN_KEY 5 /* data */
193			#define SLINKCMD_START_CRYPT_IN 6
194			#define SLINKCMD_SET_CRYPT_OUT_CIPHER 7 /* data */
195			#define SLINKCMD_SET_CRYPT_OUT_KEY 8 /* data */
196			#define SLINKCMD_START_CRYPT_OUT 9
197			#define SLINKCMD_INJECT_RECVQ 10 /* data */
198			#define SLINKCMD_INJECT_SENDQ 11 /* data */
199			#define SLINKCMD_INIT 12
200			#define SLINKCMD_ZIPSTATS 13
201
202			#define SLINKRPL_FLAG_DATA 0x0001 /* reply has data following */
203			#define SLINKRPL_ERROR 1
204			#define SLINKRPL_ZIPSTATS 2
205
206			typedef void SlinkRplHnd(unsigned int replyid, unsigned int datalen,
207			unsigned char data, struct Client client_p);
208			struct SlinkRplDef
209			{
210			unsigned int replyid;
211			SlinkRplHnd *handler;
212			unsigned int flags;
213			};
214
215			extern struct SlinkRplDef slinkrpltab[];
216
217			/*
218			* Globals
219			*
220			*
221			* list of recognized server capabilities. "TS" is not on the list
222			* because all servers that we talk to already do TS, and the kludged
223			* extra argument to "PASS" takes care of checking that. -orabidoo
224			*/
225			extern struct Capability captab[];
226			#ifdef HAVE_LIBCRYPTO
227			extern struct EncCapability CipherTable[];
228			#endif
229
230			extern struct Client uplink; / NON NULL if leaf and is this servers uplink */
231
232			/*
233			* return values for hunt_server()
234			*/
235			#define HUNTED_NOSUCH (-1) /* if the hunted server is not found */
236			#define HUNTED_ISME 0 /* if this server should execute the command */
237			#define HUNTED_PASS 1 /* if message passed onwards successfully */
238
239			extern int check_server(const char , struct Client , int);
240			extern int hunt_server(struct Client , struct Client ,
241			const char , int, int, char *);
242	db	126	extern const char my_name_for_link(struct AccessItem );
243	adx	30	extern void add_capability(const char *, int, int);
244			extern int delete_capability(const char *);
245			extern int find_capability(const char *);
246			extern void send_capabilities(struct Client , struct AccessItem , int, int);
247			extern void write_links_file(void *);
248			extern void server_estab(struct Client *);
249			extern void set_autoconn(struct Client , const char , int);
250			extern const char show_capabilities(struct Client );
251			extern void try_connections(void *);
252			extern void collect_zipstats(void *);
253			extern void initServerMask(void);
254			extern void burst_channel(struct Client client_p, struct Channel );
255			extern void sendnick_TS(struct Client , struct Client );
256			extern int serv_connect(struct AccessItem , struct Client );
257			extern struct Client find_servconn_in_progress(const char );
258			extern unsigned long nextFreeMask(void);
259	db	126	extern void cryptlink_init(struct Client , struct AccessItem , fde_t *);
260	adx	30	extern void cryptlink_regen_key(void *);
261			extern void cryptlink_error(struct Client , const char ,
262			const char , const char );
263			extern void remove_lazylink_flags(unsigned long);
264			extern void client_burst_if_needed(struct Client , struct Client );
265			extern struct EncCapability check_cipher(struct Client , struct AccessItem *);
266			extern void add_lazylinkclient(struct Client , struct Client );
267
268			extern struct Server make_server(struct Client );
269
270			/* XXX don't belong in the now gone md5, but do these belong in s_serv.c ? */
271			extern int base64_block(unsigned char *, char , int);
272			extern int unbase64_block(unsigned char *, char , int);
273			#endif /* INCLUDED_s_serv_h */
274