1 /*
2 * InspIRCd -- Internet Relay Chat Daemon
3 *
4 * Copyright (C) 2013 Sadie Powell <sadie@witchery.services>
5 * Copyright (C) 2012-2014 Attila Molnar <attilamolnar@hush.com>
6 * Copyright (C) 2012 Robby <robby@chatbelgie.be>
7 * Copyright (C) 2010 Craig Edwards <brain@inspircd.org>
8 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
9 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
10 *
11 * This file is part of InspIRCd. InspIRCd is free software: you can
12 * redistribute it and/or modify it under the terms of the GNU General Public
13 * License as published by the Free Software Foundation, version 2.
14 *
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24
25 #include "inspircd.h"
26
BanCacheHit(const std::string & type,const std::string & reason,time_t seconds)27 BanCacheHit::BanCacheHit(const std::string& type, const std::string& reason, time_t seconds)
28 : Type(type)
29 , Reason(reason)
30 , Expiry(ServerInstance->Time() + seconds)
31 {
32 }
33
AddHit(const std::string & ip,const std::string & type,const std::string & reason,time_t seconds)34 BanCacheHit *BanCacheManager::AddHit(const std::string &ip, const std::string &type, const std::string &reason, time_t seconds)
35 {
36 BanCacheHit*& b = BanHash[ip];
37 if (b != NULL) // can't have two cache entries on the same IP, sorry..
38 return NULL;
39
40 b = new BanCacheHit(type, reason, (seconds ? seconds : 86400));
41 return b;
42 }
43
GetHit(const std::string & ip)44 BanCacheHit *BanCacheManager::GetHit(const std::string &ip)
45 {
46 BanCacheHash::iterator i = this->BanHash.find(ip);
47
48 if (i == this->BanHash.end())
49 return NULL; // free and safe
50
51 if (RemoveIfExpired(i))
52 return NULL; // expired
53
54 return i->second; // hit.
55 }
56
RemoveIfExpired(BanCacheHash::iterator & it)57 bool BanCacheManager::RemoveIfExpired(BanCacheHash::iterator& it)
58 {
59 if (ServerInstance->Time() < it->second->Expiry)
60 return false;
61
62 ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "Hit on " + it->first + " is out of date, removing!");
63 delete it->second;
64 it = BanHash.erase(it);
65 return true;
66 }
67
RemoveEntries(const std::string & type,bool positive)68 void BanCacheManager::RemoveEntries(const std::string& type, bool positive)
69 {
70 if (positive)
71 ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCacheManager::RemoveEntries(): Removing positive hits for " + type);
72 else
73 ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCacheManager::RemoveEntries(): Removing all negative hits");
74
75 for (BanCacheHash::iterator i = BanHash.begin(); i != BanHash.end(); )
76 {
77 if (RemoveIfExpired(i))
78 continue; // updates the iterator if expired
79
80 BanCacheHit* b = i->second;
81 bool remove = false;
82
83 if (positive)
84 {
85 // when removing positive hits, remove only if the type matches
86 remove = b->IsPositive() && (b->Type == type);
87 }
88 else
89 {
90 // when removing negative hits, remove all of them
91 remove = !b->IsPositive();
92 }
93
94 if (remove)
95 {
96 /* we need to remove this one. */
97 ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCacheManager::RemoveEntries(): Removing a hit on " + i->first);
98 delete b;
99 i = BanHash.erase(i);
100 }
101 else
102 ++i;
103 }
104 }
105
~BanCacheManager()106 BanCacheManager::~BanCacheManager()
107 {
108 for (BanCacheHash::iterator n = BanHash.begin(); n != BanHash.end(); ++n)
109 delete n->second;
110 }
111