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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
/* +------------------------------------+
* | 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.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
/** Holds a users m_safelist state
*/
class ListData : public classbase
{
public:
long list_start;
long list_position;
bool list_ended;
const std::string glob;
int minusers;
int maxusers;
ListData() : list_start(0), list_position(0), list_ended(false) {};
ListData(long pos, time_t t, const std::string &pattern, int mi, int ma) : list_start(t), list_position(pos), list_ended(false), glob(pattern), minusers(mi), maxusers(ma) {};
};
/* $ModDesc: A module overriding /list, and making it safe - stop those sendq problems. */
class ModuleSafeList : public Module
{
time_t ThrottleSecs;
size_t ServerNameSize;
int global_listing;
int LimitList;
public:
ModuleSafeList(InspIRCd* Me) : Module(Me)
{
OnRehash(NULL);
Implementation eventlist[] = { I_OnBufferFlushed, I_OnPreCommand, I_OnCleanup, I_OnUserQuit, I_On005Numeric, I_OnRehash };
ServerInstance->Modules->Attach(eventlist, this, 6);
}
virtual ~ModuleSafeList()
{
}
virtual void OnRehash(User* user)
{
ConfigReader MyConf(ServerInstance);
ThrottleSecs = MyConf.ReadInteger("safelist", "throttle", "60", 0, true);
LimitList = MyConf.ReadInteger("safelist", "maxlisters", "50", 0, true);
ServerNameSize = strlen(ServerInstance->Config->ServerName) + 4;
global_listing = 0;
}
virtual Version GetVersion()
{
return Version("$Id$",VF_VENDOR,API_VERSION);
}
/*
* OnPreCommand()
* Intercept the LIST command.
*/
virtual ModResult OnPreCommand(std::string &command, std::vector<std::string> ¶meters, User *user, bool validated, const std::string &original_line)
{
/* If the command doesnt appear to be valid, we dont want to mess with it. */
if (!validated)
return MOD_RES_PASSTHRU;
if (command == "LIST")
{
return this->HandleList(parameters, user);
}
return MOD_RES_PASSTHRU;
}
/*
* HandleList()
* Handle (override) the LIST command.
*/
ModResult HandleList(const std::vector<std::string> ¶meters, User* user)
{
int pcnt = parameters.size();
int minusers = 0, maxusers = 0;
if (global_listing >= LimitList && !IS_OPER(user))
{
user->WriteServ("NOTICE %s :*** Server load is currently too heavy. Please try again later.", user->nick.c_str());
user->WriteNumeric(321, "%s Channel :Users Name",user->nick.c_str());
user->WriteNumeric(323, "%s :End of channel list.",user->nick.c_str());
return MOD_RES_DENY;
}
/* First, let's check if the user is currently /list'ing */
ListData *ld;
user->GetExt("safelist_cache", ld);
if (ld)
{
/* user is already /list'ing, we don't want to do shit. */
return MOD_RES_DENY;
}
/* Work around mIRC suckyness. YOU SUCK, KHALED! */
if (pcnt == 1)
{
if (parameters[0][0] == '<')
{
maxusers = atoi(parameters[0].c_str()+1);
ServerInstance->Logs->Log("m_safelist",DEBUG,"Max users: %d", maxusers);
pcnt = 0;
}
else if (parameters[0][0] == '>')
{
minusers = atoi(parameters[0].c_str()+1);
ServerInstance->Logs->Log("m_safelist",DEBUG,"Min users: %d", minusers);
pcnt = 0;
}
}
time_t* last_list_time;
user->GetExt("safelist_last", last_list_time);
if (last_list_time)
{
if (ServerInstance->Time() < (*last_list_time)+ThrottleSecs)
{
user->WriteServ("NOTICE %s :*** Woah there, slow down a little, you can't /LIST so often!",user->nick.c_str());
user->WriteNumeric(321, "%s Channel :Users Name",user->nick.c_str());
user->WriteNumeric(323, "%s :End of channel list.",user->nick.c_str());
return MOD_RES_DENY;
}
delete last_list_time;
user->Shrink("safelist_last");
}
/*
* start at channel 0! ;)
*/
ld = new ListData(0,ServerInstance->Time(), (pcnt && (parameters[0][0] != '<' && parameters[0][0] != '>')) ? parameters[0] : "*", minusers, maxusers);
user->Extend("safelist_cache", ld);
time_t* llt = new time_t;
*llt = ServerInstance->Time();
user->Extend("safelist_last", llt);
user->WriteNumeric(321, "%s Channel :Users Name",user->nick.c_str());
global_listing++;
return MOD_RES_DENY;
}
virtual void OnBufferFlushed(User* user)
{
char buffer[MAXBUF];
ListData* ld;
if (user->GetExt("safelist_cache", ld))
{
Channel* chan = NULL;
unsigned long amount_sent = 0;
do
{
chan = ServerInstance->GetChannelIndex(ld->list_position);
bool is_special = (chan && (chan->HasUser(user) || user->HasPrivPermission("channels/auspex")));
long users = chan ? chan->GetUserCounter() : 0;
bool too_few = (ld->minusers && (users <= ld->minusers));
bool too_many = (ld->maxusers && (users >= ld->maxusers));
if (chan && (too_many || too_few))
{
ld->list_position++;
continue;
}
if (chan)
{
bool display = (InspIRCd::Match(chan->name, ld->glob) || (!chan->topic.empty() && InspIRCd::Match(chan->topic, ld->glob)));
if (!users || !display)
{
ld->list_position++;
continue;
}
/* +s, not in chan / not got channels/auspex */
if (chan->IsModeSet('s') && !is_special)
{
ld->list_position++;
continue;
}
if (chan->IsModeSet('p') && !is_special)
{
/* Channel is +p and user is outside/not privileged */
int counter = snprintf(buffer, MAXBUF, "322 %s * %ld :", user->nick.c_str(), users);
amount_sent += counter + ServerNameSize;
user->WriteServ(std::string(buffer));
}
else
{
/* User is in the channel/privileged, channel is not +s */
int counter = snprintf(buffer, MAXBUF, "322 %s %s %ld :[+%s] %s", user->nick.c_str(), chan->name.c_str(), users, chan->ChanModes(is_special), chan->topic.c_str());
amount_sent += counter + ServerNameSize;
user->WriteServ(std::string(buffer));
}
}
else
{
if (!ld->list_ended)
{
ld->list_ended = true;
user->WriteNumeric(323, "%s :End of channel list.",user->nick.c_str());
}
}
ld->list_position++;
}
while ((chan != NULL) && (amount_sent < (user->MyClass->GetSendqMax() / 4)));
if (ld->list_ended)
{
user->Shrink("safelist_cache");
delete ld;
global_listing--;
}
}
}
virtual void OnCleanup(int target_type, void* item)
{
if(target_type == TYPE_USER)
{
User* u = (User*)item;
ListData* ld;
u->GetExt("safelist_cache", ld);
if (ld)
{
u->Shrink("safelist_cache");
delete ld;
global_listing--;
}
time_t* last_list_time;
u->GetExt("safelist_last", last_list_time);
if (last_list_time)
{
delete last_list_time;
u->Shrink("safelist_last");
}
}
}
virtual void On005Numeric(std::string &output)
{
output.append(" SAFELIST");
}
virtual void OnUserQuit(User* user, const std::string &message, const std::string &oper_message)
{
this->OnCleanup(TYPE_USER,user);
}
};
MODULE_INIT(ModuleSafeList)
|
