1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef __BANCACHE_H
#define __BANCACHE_H
/** Stores a cached ban entry.
* Each ban has one of these hashed in a hash_map to make for faster removal
* of already-banned users in the case that they try to reconnect. As no wildcard
* matching is done on these IPs, the speed of the system is improved. These cache
* entries expire every few hours, which is a reasonable expiry for any reasonable
* sized network.
*/
class CoreExport BanCacheHit
{
public:
/** Type of cached ban
*/
std::string Type;
/** Reason, shown as quit message
*/
std::string Reason;
/** IP to match against, no wildcards here (of course)
*/
std::string IP;
/** Time that the ban expires at
*/
time_t Expiry;
BanCacheHit(const std::string &ip, const std::string &type, const std::string &reason)
{
this->Type = type;
this->Reason = reason;
this->IP = ip;
this->Expiry = ServerInstance->Time() + 86400; // a day. this might seem long, but entries will be removed as glines/etc expire.
}
// overridden to allow custom time
BanCacheHit(const std::string &ip, const std::string &type, const std::string &reason, time_t seconds)
{
this->Type = type;
this->Reason = reason;
this->IP = ip;
this->Expiry = ServerInstance->Time() + seconds;
}
};
/* A container of ban cache items.
* must be defined after class BanCacheHit.
*/
#if defined(WINDOWS) && !defined(HASHMAP_DEPRECATED)
typedef nspace::hash_map<std::string, BanCacheHit*, nspace::hash_compare<std::string, std::less<std::string> > > BanCacheHash;
#else
typedef nspace::hash_map<std::string, BanCacheHit*, nspace::hash<std::string> > BanCacheHash;
#endif
/** A manager for ban cache, which allocates and deallocates and checks cached bans.
*/
class CoreExport BanCacheManager
{
private:
BanCacheHash* BanHash;
public:
/** Creates and adds a Ban Cache item.
* @param ip The IP the item is for.
* @param type The type of ban cache item. std::string. .empty() means it's a negative match (user is allowed freely).
* @param reason The reason for the ban. Left .empty() if it's a negative match.
*/
BanCacheHit *AddHit(const std::string &ip, const std::string &type, const std::string &reason);
// Overridden to allow an optional number of seconds before expiry
BanCacheHit *AddHit(const std::string &ip, const std::string &type, const std::string &reason, time_t seconds);
BanCacheHit *GetHit(const std::string &ip);
bool RemoveHit(BanCacheHit *b);
/** Removes all entries of a given type, either positive or negative. Returns the number of hits removed.
* @param type The type of bancache entries to remove (e.g. 'G')
* @param positive Remove either positive (true) or negative (false) hits.
*/
unsigned int RemoveEntries(const std::string &type, bool positive);
BanCacheManager()
{
this->BanHash = new BanCacheHash();
}
~BanCacheManager()
{
delete BanHash;
}
void RehashCache();
};
#endif
|
