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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2018, 2020, 2022-2025 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2013-2014, 2016 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/>.
*/
#include "inspircd.h"
#include "commands.h"
#include "utils.h"
#include "treeserver.h"
#include "treesocket.h"
CmdResult CommandIJoin::HandleRemote(RemoteUser* user, Params& params)
{
auto* chan = ServerInstance->Channels.Find(params[0]);
if (!chan)
{
// Desync detected, recover
// Ignore the join and send RESYNC, this will result in the remote server sending all channel data to us
ServerInstance->Logs.Debug(MODNAME, "Received IJOIN for nonexistent channel: {}", params[0]);
MessageBuilder("RESYNC")
.Push(params[0])
.Unicast(user);
return CmdResult::FAILURE;
}
auto apply_modes = false;
PrefixMode::Set modes;
if (params.size() > 4)
{
time_t RemoteTS = ServerCommand::ExtractTS(params[3]);
if (RemoteTS <= chan->age)
{
apply_modes = true;
for (const auto modechr : params[4])
{
auto* pm = ServerInstance->Modes.FindPrefixMode(modechr);
if (pm)
modes.insert(pm);
}
}
}
// Join the user and set the membership id to what they sent
auto* memb = chan->ForceJoin(user, apply_modes ? &modes : nullptr);
if (!memb)
return CmdResult::FAILURE;
memb->id = Membership::IdFromString(params[1]);
memb->created = ConvToNum<time_t>(params[2]);
return CmdResult::SUCCESS;
}
CmdResult CommandResync::HandleServer(TreeServer* server, CommandBase::Params& params)
{
ServerInstance->Logs.Debug(MODNAME, "Resyncing {}", params[0]);
auto* chan = ServerInstance->Channels.Find(params[0]);
if (!chan)
{
// This can happen for a number of reasons, safe to ignore
ServerInstance->Logs.Debug(MODNAME, "Channel does not exist");
return CmdResult::FAILURE;
}
if (!server->IsLocal())
throw ProtocolException("RESYNC from a server that is not directly connected");
// Send all known information about the channel
server->GetSocket()->SyncChannel(chan, server);
return CmdResult::SUCCESS;
}
|
