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1 | /* | |
2 | * IRC - Internet Relay Chat, include/whowas.h | |
3 | * Copyright (C) 1990 Markku Savela | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 1, or (at your option) | |
8 | * any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | /** @file | |
20 | * @brief Globally visible declarations to manipulate whowas information. | |
21 | * @version $Id: whowas.h,v 1.6 2004/10/05 04:14:44 entrope Exp $ | |
22 | */ | |
23 | #ifndef INCLUDED_whowas_h | |
24 | #define INCLUDED_whowas_h | |
25 | #ifndef INCLUDED_sys_types_h | |
26 | #include <sys/types.h> /* size_t */ | |
27 | #define INCLUDED_sys_types_h | |
28 | #endif | |
29 | ||
30 | struct Client; | |
31 | ||
32 | /* | |
33 | * General defines | |
34 | */ | |
35 | ||
36 | #define BITS_PER_COL 3 /**< Magic number used by whowas hash function. */ | |
37 | #define BITS_PER_COL_MASK 0x7 /**< Mask with #BITS_PER_COL least significant bits set. */ | |
38 | #define WW_MAX_INITIAL 16 /**< Magic number used by whowas hash function. */ | |
39 | ||
40 | #define MAX_SUB (1 << BITS_PER_COL) /**< Magic number used by whowas hash function. */ | |
41 | #define WW_MAX_INITIAL_MASK (WW_MAX_INITIAL - 1) /**< Magic number used by whowas hash function. */ | |
42 | #define WW_MAX (WW_MAX_INITIAL * MAX_SUB) /**< Size of whowas hash table. */ | |
43 | ||
44 | /* | |
45 | * Structures | |
46 | */ | |
47 | ||
48 | /** Tracks previously used nicknames. */ | |
49 | struct Whowas { | |
50 | unsigned int hashv; /**< Hash value for nickname. */ | |
51 | char *name; /**< Client's old nickname. */ | |
52 | char *username; /**< Client's username. */ | |
53 | char *hostname; /**< Client's hostname. */ | |
54 | char *realhost; /**< Client's real hostname. */ | |
55 | char *servername; /**< Name of client's server. */ | |
56 | char *realname; /**< Client's realname (user info). */ | |
57 | char *away; /**< Client's away message. */ | |
58 | time_t logoff; /**< When the client logged off. */ | |
59 | struct Client *online; /**< Needed for get_history() (nick chasing). */ | |
60 | struct Whowas *hnext; /**< Next entry with the same hash value. */ | |
61 | struct Whowas **hprevnextp; /**< Pointer to previous next pointer. */ | |
62 | struct Whowas *cnext; /**< Next entry with the same 'online' pointer. */ | |
63 | struct Whowas **cprevnextp; /**< Pointer to previous next pointer. */ | |
64 | struct Whowas *wnext; /**< Next entry in whowas linked list. */ | |
65 | struct Whowas *wprev; /**< Pointer to previous next pointer. */ | |
66 | }; | |
67 | ||
68 | /* | |
69 | * Proto types | |
70 | */ | |
71 | extern struct Whowas* whowashash[]; | |
72 | ||
73 | extern unsigned int hash_whowas_name(const char *name); | |
74 | ||
75 | extern struct Client *get_history(const char *nick, time_t timelimit); | |
76 | extern void add_history(struct Client *cptr, int still_on); | |
77 | extern void off_history(const struct Client *cptr); | |
78 | extern void initwhowas(void); | |
79 | extern void count_whowas_memory(int *wwu, size_t *wwm, int *wwa, size_t *wwam); | |
80 | ||
81 | extern void whowas_realloc(void); | |
82 | ||
83 | #endif /* INCLUDED_whowas_h */ |