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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2017-2018 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2013-2015, 2017-2018 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 "modules/cap.h"
class ModuleHostCycle : public Module
{
Cap::Reference chghostcap;
const std::string quitmsghost;
const std::string quitmsgident;
/** Send fake quit/join/mode messages for host or ident cycle.
*/
void DoHostCycle(User* user, const std::string& newident, const std::string& newhost, const std::string& reason)
{
// The user has the original ident/host at the time this function is called
ClientProtocol::Messages::Quit quitmsg(user, reason);
ClientProtocol::Event quitevent(ServerInstance->GetRFCEvents().quit, quitmsg);
already_sent_t silent_id = ServerInstance->Users.NextAlreadySentId();
already_sent_t seen_id = ServerInstance->Users.NextAlreadySentId();
IncludeChanList include_chans(user->chans.begin(), user->chans.end());
std::map<User*,bool> exceptions;
FOREACH_MOD(OnBuildNeighborList, (user, include_chans, exceptions));
// Users shouldn't see themselves quitting when host cycling
exceptions.erase(user);
for (std::map<User*,bool>::iterator i = exceptions.begin(); i != exceptions.end(); ++i)
{
LocalUser* u = IS_LOCAL(i->first);
if ((u) && (!u->quitting) && (!chghostcap.get(u)))
{
if (i->second)
{
u->already_sent = seen_id;
u->Send(quitevent);
}
else
{
u->already_sent = silent_id;
}
}
}
std::string newfullhost = user->nick + "!" + newident + "@" + newhost;
for (IncludeChanList::const_iterator i = include_chans.begin(); i != include_chans.end(); ++i)
{
Membership* memb = *i;
Channel* c = memb->chan;
ClientProtocol::Events::Join joinevent(memb, newfullhost);
const Channel::MemberMap& ulist = c->GetUsers();
for (Channel::MemberMap::const_iterator j = ulist.begin(); j != ulist.end(); ++j)
{
LocalUser* u = IS_LOCAL(j->first);
if (u == NULL || u == user)
continue;
if (u->already_sent == silent_id)
continue;
if (chghostcap.get(u))
continue;
if (u->already_sent != seen_id)
{
u->Send(quitevent);
u->already_sent = seen_id;
}
u->Send(joinevent);
}
}
}
public:
ModuleHostCycle()
: chghostcap(this, "chghost")
, quitmsghost("Changing host")
, quitmsgident("Changing ident")
{
}
void OnChangeIdent(User* user, const std::string& newident) CXX11_OVERRIDE
{
DoHostCycle(user, newident, user->GetDisplayedHost(), quitmsgident);
}
void OnChangeHost(User* user, const std::string& newhost) CXX11_OVERRIDE
{
DoHostCycle(user, user->ident, newhost, quitmsghost);
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Sends a fake disconnection and reconnection when a user's username (ident) or hostname changes to allow clients to update their internal caches.", VF_VENDOR);
}
};
MODULE_INIT(ModuleHostCycle)
|
