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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
*
* 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/>.
*/
/* $ModDesc: Implements server-side topic locks and the server-to-server command SVSTOPIC */
#include "inspircd.h"
class CommandSVSTOPIC : public Command
{
public:
CommandSVSTOPIC(Module* Creator)
: Command(Creator, "SVSTOPIC", 1, 4)
{
flags_needed = FLAG_SERVERONLY;
}
CmdResult Handle(const std::vector<std::string> ¶meters, User *user)
{
if (!ServerInstance->ULine(user->server))
{
// Ulines only
return CMD_FAILURE;
}
Channel* chan = ServerInstance->FindChan(parameters[0]);
if (!chan)
return CMD_FAILURE;
if (parameters.size() == 4)
{
// 4 parameter version, set all topic data on the channel to the ones given in the parameters
time_t topicts = ConvToInt(parameters[1]);
if (!topicts)
{
ServerInstance->Logs->Log("m_topiclock", DEFAULT, "Received SVSTOPIC with a 0 topicts, dropped.");
return CMD_INVALID;
}
std::string newtopic;
newtopic.assign(parameters[3], 0, ServerInstance->Config->Limits.MaxTopic);
bool topics_differ = (chan->topic != newtopic);
if ((topics_differ) || (chan->topicset != topicts) || (chan->setby != parameters[2]))
{
// Update when any parameter differs
chan->topicset = topicts;
chan->setby.assign(parameters[2], 0, 127);
chan->topic = newtopic;
// Send TOPIC to clients only if the actual topic has changed, be silent otherwise
if (topics_differ)
chan->WriteChannel(user, "TOPIC %s :%s", chan->name.c_str(), chan->topic.c_str());
}
}
else
{
// 1 parameter version, nuke the topic
bool topic_empty = chan->topic.empty();
if (!topic_empty || !chan->setby.empty())
{
chan->topicset = 0;
chan->setby.clear();
chan->topic.clear();
if (!topic_empty)
chan->WriteChannel(user, "TOPIC %s :", chan->name.c_str());
}
}
return CMD_SUCCESS;
}
RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
{
return ROUTE_BROADCAST;
}
};
class FlagExtItem : public ExtensionItem
{
public:
FlagExtItem(const std::string& key, Module* owner)
: ExtensionItem(key, owner)
{
}
virtual ~FlagExtItem()
{
}
bool get(const Extensible* container) const
{
return (get_raw(container) != NULL);
}
std::string serialize(SerializeFormat format, const Extensible* container, void* item) const
{
if (format == FORMAT_USER)
return "true";
return "1";
}
void unserialize(SerializeFormat format, Extensible* container, const std::string& value)
{
if (value == "1")
set_raw(container, this);
else
unset_raw(container);
}
void set(Extensible* container, bool value)
{
if (value)
set_raw(container, this);
else
unset_raw(container);
}
void unset(Extensible* container)
{
unset_raw(container);
}
void free(void* item)
{
// nothing to free
}
};
class ModuleTopicLock : public Module
{
CommandSVSTOPIC cmd;
FlagExtItem topiclock;
public:
ModuleTopicLock()
: cmd(this), topiclock("topiclock", this)
{
}
void init()
{
ServerInstance->Modules->AddService(cmd);
ServerInstance->Modules->AddService(topiclock);
ServerInstance->Modules->Attach(I_OnPreTopicChange, this);
}
ModResult OnPreTopicChange(User* user, Channel* chan, const std::string &topic)
{
// Only fired for local users currently, but added a check anyway
if ((IS_LOCAL(user)) && (topiclock.get(chan)))
{
user->WriteNumeric(744, "%s :TOPIC cannot be changed due to topic lock being active on the channel", chan->name.c_str());
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
Version GetVersion()
{
return Version("Implements server-side topic locks and the server-to-server command SVSTOPIC", VF_COMMON | VF_VENDOR);
}
};
MODULE_INIT(ModuleTopicLock)
|
