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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
*
* 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 "commands.h"
/** FTOPIC command */
CmdResult CommandFTopic::Handle(User* user, std::vector<std::string>& params)
{
Channel* c = ServerInstance->FindChan(params[0]);
if (!c)
return CMD_FAILURE;
if (c->age < ServerCommand::ExtractTS(params[1]))
// Our channel TS is older, nothing to do
return CMD_FAILURE;
// Channel::topicset is initialized to 0 on channel creation, so their ts will always win if we never had a topic
time_t ts = ServerCommand::ExtractTS(params[2]);
if (ts < c->topicset)
return CMD_FAILURE;
// The topic text is always the last parameter
const std::string& newtopic = params.back();
// If there is a setter in the message use that, otherwise use the message source
const std::string& setter = ((params.size() > 4) ? params[3] : (ServerInstance->Config->FullHostInTopic ? user->GetFullHost() : user->nick));
/*
* If the topics were updated at the exact same second, accept
* the remote only when it's "bigger" than ours as defined by
* string comparision, so non-empty topics always overridde
* empty topics if their timestamps are equal
*
* Similarly, if the topic texts are equal too, keep one topic
* setter and discard the other
*/
if (ts == c->topicset)
{
// Discard if their topic text is "smaller"
if (c->topic > newtopic)
return CMD_FAILURE;
// If the texts are equal in addition to the timestamps, decide which setter to keep
if ((c->topic == newtopic) && (c->setby >= setter))
return CMD_FAILURE;
}
if (c->topic != newtopic)
{
// Update topic only when it differs from current topic
c->topic.assign(newtopic, 0, ServerInstance->Config->Limits.MaxTopic);
c->WriteChannel(user, "TOPIC %s :%s", c->name.c_str(), c->topic.c_str());
}
// Update setter and settime
c->setby.assign(setter, 0, 128);
c->topicset = ts;
FOREACH_MOD(OnPostTopicChange, (user, c, c->topic));
return CMD_SUCCESS;
}
// Used when bursting and in reply to RESYNC, contains topic setter as the 4th parameter
CommandFTopic::Builder::Builder(Channel* chan)
: CmdBuilder("FTOPIC")
{
push(chan->name);
push_int(chan->age);
push_int(chan->topicset);
push(chan->setby);
push_last(chan->topic);
}
// Used when changing the topic, the setter is the message source
CommandFTopic::Builder::Builder(User* user, Channel* chan)
: CmdBuilder(user, "FTOPIC")
{
push(chan->name);
push_int(chan->age);
push_int(chan->topicset);
push_last(chan->topic);
}
|
