summaryrefslogtreecommitdiff
path: root/src/modules/m_namesx.cpp
blob: 020fb99bd142bcd79772ebae16cdef86d5668d6b (plain)
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
/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
 *   Copyright (C) 2013, 2018-2021 Sadie Powell <sadie@witchery.services>
 *   Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
 *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
 *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
 *   Copyright (C) 2006, 2008 Craig Edwards <brain@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 "modules/cap.h"
#include "modules/names.h"
#include "modules/who.h"
#include "modules/whois.h"

class ModuleNamesX
	: public Module
	, public Names::EventListener
	, public Who::EventListener
	, public Whois::LineEventListener
{
 private:
	Cap::Capability cap;

 public:
	ModuleNamesX()
		: Names::EventListener(this)
		, Who::EventListener(this)
		, Whois::LineEventListener(this)
		, cap(this, "multi-prefix")
	{
	}

	Version GetVersion() CXX11_OVERRIDE
	{
		return Version("Provides the IRCv3 multi-prefix client capability.", VF_VENDOR);
	}

	void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
	{
		// The legacy PROTOCTL system is a wrapper around the cap.
		dynamic_reference_nocheck<Cap::Manager> capmanager(this, "capmanager");
		if (capmanager)
			tokens["NAMESX"];
	}

	ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE
	{
		/* We don't actually create a proper command handler class for PROTOCTL,
		 * because other modules might want to have PROTOCTL hooks too.
		 * Therefore, we just hook its as an unvalidated command therefore we
		 * can capture it even if it doesnt exist! :-)
		 */
		if (command == "PROTOCTL")
		{
			if (!parameters.empty() && irc::equals(parameters[0], "NAMESX"))
			{
				cap.set(user, true);
				return MOD_RES_DENY;
			}
		}
		return MOD_RES_PASSTHRU;
	}

	ModResult OnNamesListItem(LocalUser* issuer, Membership* memb, std::string& prefixes, std::string& nick) CXX11_OVERRIDE
	{
		if (cap.get(issuer))
			prefixes = memb->GetAllPrefixChars();

		return MOD_RES_PASSTHRU;
	}

	ModResult OnWhoLine(const Who::Request& request, LocalUser* source, User* user, Membership* memb, Numeric::Numeric& numeric) CXX11_OVERRIDE
	{
		if ((!memb) || (!cap.get(source)))
			return MOD_RES_PASSTHRU;

		// Don't do anything if the user has only one prefix
		std::string prefixes = memb->GetAllPrefixChars();
		if (prefixes.length() <= 1)
			return MOD_RES_PASSTHRU;

		size_t flag_index;
		if (!request.GetFieldIndex('f', flag_index))
			return MOD_RES_PASSTHRU;

		// #chan ident localhost insp22.test nick H@ :0 Attila
		if (numeric.GetParams().size() <= flag_index)
			return MOD_RES_PASSTHRU;

		numeric.GetParams()[flag_index].append(prefixes, 1, std::string::npos);
		return MOD_RES_PASSTHRU;
	}

	ModResult OnWhoisLine(Whois::Context& whois, Numeric::Numeric& numeric) CXX11_OVERRIDE
	{
		if (numeric.GetNumeric() != RPL_WHOISCHANNELS || !cap.get(whois.GetSource()))
			return MOD_RES_PASSTHRU;

		// :testnet.inspircd.org 319 test Sadie :#test ~#inspircd
		if (numeric.GetParams().size() < 2 || numeric.GetParams().back().empty())
			return MOD_RES_PASSTHRU;

		std::stringstream newchannels;
		irc::spacesepstream channelstream(numeric.GetParams().back());
		for (std::string channel; channelstream.GetToken(channel); )
		{
			size_t hashpos = channel.find('#');
			if (!hashpos || hashpos == std::string::npos)
			{
				// The entry is malformed or the user has no privs.
				newchannels << channel << ' ';
				continue;
			}

			Channel* chan = ServerInstance->FindChan(channel.substr(hashpos));
			if (!chan)
			{
				// Should never happen.
				newchannels << channel << ' ';
				continue;
			}

			Membership* memb = chan->GetUser(whois.GetTarget());
			if (!memb)
			{
				// Should never happen.
				newchannels << channel << ' ';
				continue;
			}

			newchannels << memb->GetAllPrefixChars() << chan->name << ' ';
		}

		numeric.GetParams().back() = newchannels.str();
		return MOD_RES_PASSTHRU;
	}
};

MODULE_INIT(ModuleNamesX)