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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "listmode.h"
ListModeBase::ListModeBase(Module* Creator, const std::string& Name, char modechar, const std::string &eolstr, unsigned int lnum, unsigned int eolnum, bool autotidy, const std::string &ctag)
: ModeHandler(Creator, Name, modechar, PARAM_ALWAYS, MODETYPE_CHANNEL, MC_LIST),
listnumeric(lnum), endoflistnumeric(eolnum), endofliststring(eolstr), tidy(autotidy),
configtag(ctag)
, extItem("listbase_mode_" + name + "_list", ExtensionItem::EXT_CHANNEL, Creator)
{
list = true;
}
void ListModeBase::DisplayList(User* user, Channel* channel)
{
ChanData* cd = extItem.get(channel);
if (cd)
{
for (ModeList::const_iterator it = cd->list.begin(); it != cd->list.end(); ++it)
{
user->WriteNumeric(listnumeric, channel->name, it->mask, it->setter, (unsigned long) it->time);
}
}
user->WriteNumeric(endoflistnumeric, channel->name, endofliststring);
}
void ListModeBase::DisplayEmptyList(User* user, Channel* channel)
{
user->WriteNumeric(endoflistnumeric, channel->name, endofliststring);
}
void ListModeBase::RemoveMode(Channel* channel, Modes::ChangeList& changelist)
{
ChanData* cd = extItem.get(channel);
if (cd)
{
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); it++)
{
changelist.push_remove(this, it->mask);
}
}
}
void ListModeBase::DoRehash()
{
ConfigTagList tags = ServerInstance->Config->ConfTags(configtag);
limitlist oldlimits = chanlimits;
chanlimits.clear();
for (ConfigIter i = tags.first; i != tags.second; i++)
{
// For each <banlist> tag
ConfigTag* c = i->second;
ListLimit limit(c->getString("chan"), c->getUInt("limit", 0));
if (limit.mask.size() && limit.limit > 0)
chanlimits.push_back(limit);
}
// Add the default entry. This is inserted last so if the user specifies a
// wildcard record in the config it will take precedence over this entry.
chanlimits.push_back(ListLimit("*", DEFAULT_LIST_SIZE));
// Most of the time our settings are unchanged, so we can avoid iterating the chanlist
if (oldlimits == chanlimits)
return;
const chan_hash& chans = ServerInstance->GetChans();
for (chan_hash::const_iterator i = chans.begin(); i != chans.end(); ++i)
{
ChanData* cd = extItem.get(i->second);
if (cd)
cd->maxitems = -1;
}
}
unsigned int ListModeBase::FindLimit(const std::string& channame)
{
for (limitlist::iterator it = chanlimits.begin(); it != chanlimits.end(); ++it)
{
if (InspIRCd::Match(channame, it->mask))
{
// We have a pattern matching the channel
return it->limit;
}
}
return DEFAULT_LIST_SIZE;
}
unsigned int ListModeBase::GetLimitInternal(const std::string& channame, ChanData* cd)
{
if (cd->maxitems < 0)
cd->maxitems = FindLimit(channame);
return cd->maxitems;
}
unsigned int ListModeBase::GetLimit(Channel* channel)
{
ChanData* cd = extItem.get(channel);
if (!cd) // just find the limit
return FindLimit(channel->name);
return GetLimitInternal(channel->name, cd);
}
unsigned int ListModeBase::GetLowerLimit()
{
unsigned int limit = UINT_MAX;
for (limitlist::iterator iter = chanlimits.begin(); iter != chanlimits.end(); ++iter)
{
if (iter->limit < limit)
limit = iter->limit;
}
return limit == UINT_MAX ? DEFAULT_LIST_SIZE : limit;
}
ModeAction ListModeBase::OnModeChange(User* source, User*, Channel* channel, std::string ¶meter, bool adding)
{
// Try and grab the list
ChanData* cd = extItem.get(channel);
if (adding)
{
if (tidy)
ModeParser::CleanMask(parameter);
if (parameter.length() > 250)
return MODEACTION_DENY;
// If there was no list
if (!cd)
{
// Make one
cd = new ChanData;
extItem.set(channel, cd);
}
// Check if the item already exists in the list
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); it++)
{
if (parameter == it->mask)
{
/* Give a subclass a chance to error about this */
TellAlreadyOnList(source, channel, parameter);
// it does, deny the change
return MODEACTION_DENY;
}
}
if ((IS_LOCAL(source)) && (cd->list.size() >= GetLimitInternal(channel->name, cd)))
{
/* List is full, give subclass a chance to send a custom message */
TellListTooLong(source, channel, parameter);
return MODEACTION_DENY;
}
/* Ok, it *could* be allowed, now give someone subclassing us
* a chance to validate the parameter.
* The param is passed by reference, so they can both modify it
* and tell us if we allow it or not.
*
* eg, the subclass could:
* 1) allow
* 2) 'fix' parameter and then allow
* 3) deny
*/
if (ValidateParam(source, channel, parameter))
{
// And now add the mask onto the list...
cd->list.push_back(ListItem(parameter, source->nick, ServerInstance->Time()));
return MODEACTION_ALLOW;
}
else
{
/* If they deny it they have the job of giving an error message */
return MODEACTION_DENY;
}
}
else
{
// We're taking the mode off
if (cd)
{
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); ++it)
{
if (parameter == it->mask)
{
stdalgo::vector::swaperase(cd->list, it);
return MODEACTION_ALLOW;
}
}
}
/* Tried to remove something that wasn't set */
TellNotSet(source, channel, parameter);
return MODEACTION_DENY;
}
}
bool ListModeBase::ValidateParam(User*, Channel*, std::string&)
{
return true;
}
void ListModeBase::OnParameterMissing(User*, User*, Channel*)
{
}
void ListModeBase::TellListTooLong(User* source, Channel* channel, std::string& parameter)
{
source->WriteNumeric(ERR_BANLISTFULL, channel->name, parameter, mode, InspIRCd::Format("Channel %s list is full", name.c_str()));
}
void ListModeBase::TellAlreadyOnList(User*, Channel*, std::string&)
{
}
void ListModeBase::TellNotSet(User*, Channel*, std::string&)
{
}
|