summaryrefslogtreecommitdiff
path: root/src/modules/m_chanprotect.cpp
blob: 77fe3f353b66df0eb4bb257083b9012a0319e6a8 (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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
 * See: http://wiki.inspircd.org/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"

/* $ModDesc: Provides channel modes +a and +q */

#define PROTECT_VALUE 40000
#define FOUNDER_VALUE 50000

struct ChanProtectSettings
{
	bool DeprivSelf;
	bool DeprivOthers;
	bool FirstInGetsFounder;
	bool booting;
	ChanProtectSettings() : booting(true) {}
};

static ChanProtectSettings settings;

/** Handles basic operation of +qa channel modes
 */
class FounderProtectBase
{
 private:
	const std::string type;
	const char mode;
	const int list;
	const int end;
 public:
	FounderProtectBase(char Mode, const std::string &mtype, int l, int e) :
		type(mtype), mode(Mode), list(l), end(e)
	{
	}

	void RemoveMode(Channel* channel, irc::modestacker* stack)
	{
		const UserMembList* cl = channel->GetUsers();
		std::vector<std::string> mode_junk;
		mode_junk.push_back(channel->name);
		irc::modestacker modestack(false);
		std::deque<std::string> stackresult;

		for (UserMembCIter i = cl->begin(); i != cl->end(); i++)
		{
			if (i->second->hasMode(mode))
			{
				if (stack)
					stack->Push(mode, i->first->nick);
				else
					modestack.Push(mode, i->first->nick);
			}
		}

		if (stack)
			return;

		while (modestack.GetStackedLine(stackresult))
		{
			mode_junk.insert(mode_junk.end(), stackresult.begin(), stackresult.end());
			ServerInstance->SendMode(mode_junk, ServerInstance->FakeClient);
			mode_junk.erase(mode_junk.begin() + 1, mode_junk.end());
		}
	}

	void DisplayList(User* user, Channel* channel)
	{
		const UserMembList* cl = channel->GetUsers();
		for (UserMembCIter i = cl->begin(); i != cl->end(); ++i)
		{
			if (i->second->hasMode(mode))
			{
				user->WriteServ("%d %s %s %s", list, user->nick.c_str(), channel->name.c_str(), i->first->nick.c_str());
			}
		}
		user->WriteServ("%d %s %s :End of channel %s list", end, user->nick.c_str(), channel->name.c_str(), type.c_str());
	}

	bool CanRemoveOthers(User* u1, Channel* c)
	{
		Membership* m1 = c->GetUser(u1);
		return (settings.DeprivOthers && m1 && m1->hasMode(mode));
	}
};

/** Abstraction of FounderProtectBase for channel mode +q
 */
class ChanFounder : public ModeHandler, public FounderProtectBase
{
 public:
	ChanFounder(Module* Creator)
		: ModeHandler(Creator, "founder", 'q', PARAM_ALWAYS, MODETYPE_CHANNEL),
		  FounderProtectBase('q', "founder", 386, 387)
	{
		ModeHandler::list = true;
		levelrequired = FOUNDER_VALUE;
		m_paramtype = TR_NICK;
	}

	void setPrefix(int pfx)
	{
		prefix = pfx;
	}

	unsigned int GetPrefixRank()
	{
		return FOUNDER_VALUE;
	}

	void RemoveMode(Channel* channel, irc::modestacker* stack)
	{
		FounderProtectBase::RemoveMode(channel, stack);
	}

	void RemoveMode(User* user, irc::modestacker* stack)
	{
	}
	
	ModResult AccessCheck(User* source, Channel* channel, std::string &parameter, bool adding)
	{
		User* theuser = ServerInstance->FindNick(parameter);
		// remove own privs?
		if (source == theuser && !adding && settings.DeprivSelf)
			return MOD_RES_ALLOW;

		if (!adding && FounderProtectBase::CanRemoveOthers(source, channel))
		{
			return MOD_RES_PASSTHRU;
		}
		else
		{
			source->WriteNumeric(468, "%s %s :Only servers may set channel mode +q", source->nick.c_str(), channel->name.c_str());
			return MOD_RES_DENY;
		}
	}

	ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
	{
		return MODEACTION_ALLOW;
	}

	void DisplayList(User* user, Channel* channel)
	{
		FounderProtectBase::DisplayList(user,channel);
	}
};

/** Abstraction of FounderProtectBase for channel mode +a
 */
class ChanProtect : public ModeHandler, public FounderProtectBase
{
 public:
	ChanProtect(Module* Creator)
		: ModeHandler(Creator, "protected", 'a', PARAM_ALWAYS, MODETYPE_CHANNEL),
		  FounderProtectBase('a',"protected user", 388, 389)
	{
		ModeHandler::list = true;
		levelrequired = PROTECT_VALUE;
		m_paramtype = TR_NICK;
	}

	void setPrefix(int pfx)
	{
		prefix = pfx;
	}


	unsigned int GetPrefixRank()
	{
		return PROTECT_VALUE;
	}

	void RemoveMode(Channel* channel, irc::modestacker* stack)
	{
		FounderProtectBase::RemoveMode(channel, stack);
	}

	void RemoveMode(User* user, irc::modestacker* stack)
	{
	}

	ModResult AccessCheck(User* source, Channel* channel, std::string &parameter, bool adding)
	{
		User* theuser = ServerInstance->FindNick(parameter);
		// source has +q
		if (channel->GetPrefixValue(source) > PROTECT_VALUE)
			return MOD_RES_ALLOW;

		// removing own privs?
		if (source == theuser && !adding && settings.DeprivSelf)
			return MOD_RES_ALLOW;

		if (!adding && FounderProtectBase::CanRemoveOthers(source, channel))
		{
			return MOD_RES_PASSTHRU;
		}
		else
		{
			source->WriteNumeric(482, "%s %s :You are not a channel founder", source->nick.c_str(), channel->name.c_str());
			return MOD_RES_DENY;
		}
	}

	ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
	{
		return MODEACTION_ALLOW;
	}

	void DisplayList(User* user, Channel* channel)
	{
		FounderProtectBase::DisplayList(user, channel);
	}

};

class ModuleChanProtect : public Module
{
	ChanProtect cp;
	ChanFounder cf;
 public:
	ModuleChanProtect() : cp(this), cf(this)
	{
		/* Load config stuff */
		LoadSettings();
		settings.booting = false;

		if (!ServerInstance->Modes->AddMode(&cp) || !ServerInstance->Modes->AddMode(&cf))
		{
			throw ModuleException("Could not add new modes!");
		}

		Implementation eventlist[] = { I_OnUserPreJoin };
		ServerInstance->Modules->Attach(eventlist, this, 1);
	}

	void LoadSettings()
	{
		ConfigReader Conf;

		settings.FirstInGetsFounder = Conf.ReadFlag("chanprotect", "noservices", 0);

		std::string qpre = Conf.ReadValue("chanprotect", "qprefix", 0);
		char QPrefix = qpre.empty() ? 0 : qpre[0];

		std::string apre = Conf.ReadValue("chanprotect", "aprefix", 0);
		char APrefix = apre.empty() ? 0 : apre[0];

		if ((APrefix && QPrefix) && APrefix == QPrefix)
			throw ModuleException("What the smeg, why are both your +q and +a prefixes the same character?");

		if (ServerInstance->Modes->FindPrefix(APrefix) && ServerInstance->Modes->FindPrefix(APrefix) != &cp)
			throw ModuleException("Looks like the +a prefix you picked for m_chanprotect is already in use. Pick another.");

		if (ServerInstance->Modes->FindPrefix(QPrefix) && ServerInstance->Modes->FindPrefix(QPrefix) != &cf)
			throw ModuleException("Looks like the +q prefix you picked for m_chanprotect is already in use. Pick another.");

		if (settings.booting)
		{
			cp.setPrefix(APrefix);
			cf.setPrefix(QPrefix);
		}
		settings.DeprivSelf = Conf.ReadFlag("chanprotect","deprotectself", "yes", 0);
		settings.DeprivOthers = Conf.ReadFlag("chanprotect","deprotectothers", "yes", 0);
	}

	ModResult OnUserPreJoin(User *user, Channel *chan, const char *cname, std::string &privs, const std::string &keygiven)
	{
		// if the user is the first user into the channel, mark them as the founder, but only if
		// the config option for it is set

		if (settings.FirstInGetsFounder && !chan)
			privs += 'q';

		return MOD_RES_PASSTHRU;
	}

	Version GetVersion()
	{
		return Version("Founder and Protect modes (+qa)", VF_COMMON | VF_VENDOR);
	}
};

MODULE_INIT(ModuleChanProtect)