summaryrefslogtreecommitdiff
path: root/src/modules/m_chanprotect.cpp
blob: dca0b53d29970c8b333107d39ca51146c2ab391a (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
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
 *                       E-mail:
 *                <brain@chatspike.net>
 *           	  <Craig@chatspike.net>
 *     
 * Written by Craig Edwards, Craig McLure, and others.
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "users.h"
#include "channels.h"
#include "modules.h"
#include "helperfuncs.h"

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

const char fakevalue* = "on";

class ModuleChanProtect : public Module
{
	Server *Srv;
	bool FirstInGetsFounder;
	ConfigReader *Conf;
	
 public:
 
	ModuleChanProtect(Server* Me)
	: Module::Module(Me), Srv(Me)
	{	
		/* Initialise module variables */
		Conf = new ConfigReader;
		
		// set up our modes. We're using listmodes and not normal extmodes here.
		// listmodes only need one parameter as everything else is assumed by the
		// nature of the mode thats being created.
		Srv->AddExtendedListMode('a');
		Srv->AddExtendedListMode('q');
		
		// read our config options (main config file)
		FirstInGetsFounder = Conf->ReadFlag("options","noservices",0);
	}

	void Implements(char* List)
	{
		List[I_On005Numeric] = List[I_OnUserKick] = List[I_OnUserPart] = List[I_OnRehash] = List[I_OnUserJoin] = List[I_OnAccessCheck] = List[I_OnExtendedMode] = List[I_OnSendList] = List[I_OnSyncChannel] = 1;
	}
	
	virtual void On005Numeric(std::string &output)
	{
		InsertMode(output,"qa",1);
	}

	virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
	{
		// FIX: when someone gets kicked from a channel we must remove their Extensibles!
		user->Shrink("cm_founder_"+std::string(chan->name));
		user->Shrink("cm_protect_"+std::string(chan->name));
	}

	virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partreason)
	{
		// FIX: when someone parts a channel we must remove their Extensibles!
		user->Shrink("cm_founder_"+std::string(channel->name));
		user->Shrink("cm_protect_"+std::string(channel->name));
	}

	virtual void OnRehash(const std::string &parameter)
	{
		// on a rehash we delete our classes for good measure and create them again.
		DELETE(Conf);
		Conf = new ConfigReader;
		// re-read our config options on a rehash
		FirstInGetsFounder = Conf->ReadFlag("options","noservices",0);
	}
	
	virtual void OnUserJoin(userrec* user, chanrec* channel)
	{
		// 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 (FirstInGetsFounder)
		{
			if (Srv->CountUsers(channel) == 1)
			{
				// we're using Extensible::Extend to add data into user objects.
				// this way is best as it adds data thats accessible to other modules
				// (so long as you document your code properly) without breaking anything
				// because its encapsulated neatly in a map.

				// Change requested by katsklaw... when the first in is set to get founder,
				// to make it clearer that +q has been given, send that one user the +q notice
				// so that their client's syncronization and their sanity are left intact.
				WriteServ(user->fd,"MODE %s +q %s",channel->name,user->nick);
				if (user->Extend("cm_founder_"+std::string(channel->name),fakevalue))
				{
					Srv->Log(DEBUG,"Marked user "+std::string(user->nick)+" as founder for "+std::string(channel->name));
				}
			}
		}
	}
	
	virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
	{
		// here we perform access checks, this is the important bit that actually stops kicking/deopping
		// etc of protected users. There are many types of access check, we're going to handle
		// a relatively small number of them relevent to our module using a switch statement.
	
		// don't allow action if:
		// (A) Theyre founder (no matter what)
		// (B) Theyre protected, and you're not
		// always allow the action if:
		// (A) The source is ulined
		
		
		// firstly, if a ulined nick, or a server, is setting the mode, then allow them to set the mode
		// without any access checks, we're not worthy :p
		if ((Srv->IsUlined(source->nick)) || (Srv->IsUlined(source->server)) || (!strcmp(source->server,"")))
		{
			return ACR_ALLOW;
		}

		switch (access_type)
		{
			// a user has been deopped. Do we let them? hmmm...
			case AC_DEOP:
				if (dest->GetExt("cm_founder_"+std::string(channel->name)))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't deop "+std::string(dest->nick)+" as they're a channel founder");
					return ACR_DENY;
				}
				if ((dest->GetExt("cm_protect_"+std::string(channel->name))) && (!source->GetExt("cm_protect_"+std::string(channel->name))))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't deop "+std::string(dest->nick)+" as they're protected (+a)");
					return ACR_DENY;
				}
			break;

			// a user is being kicked. do we chop off the end of the army boot?
			case AC_KICK:
				if (dest->GetExt("cm_founder_"+std::string(channel->name)))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't kick "+std::string(dest->nick)+" as they're a channel founder");
					return ACR_DENY;
				}
				if ((dest->GetExt("cm_protect_"+std::string(channel->name))) && (!source->GetExt("cm_protect_"+std::string(channel->name))))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't kick "+std::string(dest->nick)+" as they're protected (+a)");
					return ACR_DENY;
				}
			break;

			// a user is being dehalfopped. Yes, we do disallow -h of a +ha user
			case AC_DEHALFOP:
				if (dest->GetExt("cm_founder_"+std::string(channel->name)))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't de-halfop "+std::string(dest->nick)+" as they're a channel founder");
					return ACR_DENY;
				}
				if ((dest->GetExt("cm_protect_"+std::string(channel->name))) && (!source->GetExt("cm_protect_"+std::string(channel->name))))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't de-halfop "+std::string(dest->nick)+" as they're protected (+a)");
					return ACR_DENY;
				}
			break;

			// same with devoice.
			case AC_DEVOICE:
				if (dest->GetExt("cm_founder_"+std::string(channel->name)))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't devoice "+std::string(dest->nick)+" as they're a channel founder");
					return ACR_DENY;
				}
				if ((dest->GetExt("cm_protect_"+std::string(channel->name))) && (!source->GetExt("cm_protect_"+std::string(channel->name))))
				{
					Srv->SendServ(source->fd,"484 "+std::string(source->nick)+" "+std::string(channel->name)+" :Can't devoice "+std::string(dest->nick)+" as they're protected (+a)");
					return ACR_DENY;
				}
			break;
		}
		
		// we dont know what this access check is, or dont care. just carry on, nothing to see here.
		return ACR_DEFAULT;
	}
	
	virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
	{
		// not out mode, bail
		if ((modechar == 'q') && (type == MT_CHANNEL))
		{
			// set up parameters
			chanrec* chan = (chanrec*)target;
			userrec* theuser = Srv->FindNick(params[0]);
		
			// cant find the user given as the parameter, eat the mode change.
			if (!theuser)
				return -1;
			
			// given user isnt even on the channel, eat the mode change
			if (!chan->HasUser(theuser))
				return -1;
			
			// source is a server, or ulined, we'll let them +-q the user.
			if ((Srv->IsUlined(user->nick)) || (Srv->IsUlined(user->server)) || (!strcmp(user->server,"")))
			{
				if (mode_on)
   				{
   					if (!theuser->GetExt("cm_founder_"+std::string(chan->name)))
   					{
						theuser->Extend("cm_founder_"+std::string(chan->name),fakevalue);
						return 1;
					}
				}
				else
 				{
 					if (theuser->GetExt("cm_founder_"+std::string(chan->name)))
 					{
						theuser->Shrink("cm_founder_"+std::string(chan->name));
						return 1;
					}
				}	

				return -1;
			}
			else
			{
				// whoops, someones being naughty!
				WriteServ(user->fd,"468 %s %s :Only servers may set channel mode +q",user->nick, chan->name);
				return -1;
			}
		}
		if ((modechar == 'a') && (type == MT_CHANNEL))
		{
			// set up parameters
			chanrec* chan = (chanrec*)target;
			userrec* theuser = Srv->FindNick(params[0]);
		
			// cant find the user given as the parameter, eat the mode change.
			if (!theuser)
				return -1;
			
			// given user isnt even on the channel, eat the mode change
			if (!chan->HasUser(theuser))
				return -1;

			// source has +q, is a server, or ulined, we'll let them +-a the user.
			if ((Srv->IsUlined(user->nick)) || (Srv->IsUlined(user->server)) || (!strcmp(user->server,"")) || (user->GetExt("cm_founder_"+std::string(chan->name))))
			{
				if (mode_on)
   				{
   					if (!theuser->GetExt("cm_protect_"+std::string(chan->name)))
   					{
						theuser->Extend("cm_protect_"+std::string(chan->name),fakevalue);
						return 1;
					}
				}
				else
    				{
    					if (theuser->GetExt("cm_protect_"+std::string(chan->name)))
    					{
						theuser->Shrink("cm_protect_"+std::string(chan->name));
						return 1;
					}
				}	

				return -1;
			}
			else
			{
				// bzzzt, wrong answer!
				WriteServ(user->fd,"482 %s %s :You are not a channel founder",user->nick, chan->name);
				return -1;
			}
		}
		return 0;
	}

	virtual void OnSendList(userrec* user, chanrec* channel, char mode)
	{
		if (mode == 'q')
		{
			chanuserlist cl = Srv->GetUsers(channel);
			for (unsigned int i = 0; i < cl.size(); i++)
			{
				if (cl[i]->GetExt("cm_founder_"+std::string(channel->name)))
				{
					WriteServ(user->fd,"386 %s %s %s",user->nick, channel->name,cl[i]->nick);
				}
			}
			WriteServ(user->fd,"387 %s %s :End of channel founder list",user->nick, channel->name);
		}
		if (mode == 'a')
		{
			chanuserlist cl = Srv->GetUsers(channel);
			for (unsigned int i = 0; i < cl.size(); i++)
			{
				if (cl[i]->GetExt("cm_protect_"+std::string(channel->name)))
				{
					WriteServ(user->fd,"388 %s %s %s",user->nick, channel->name,cl[i]->nick);
				}
			}
			WriteServ(user->fd,"389 %s %s :End of channel protected user list",user->nick, channel->name);
		}

	}
	
	virtual ~ModuleChanProtect()
	{
		DELETE(Conf);
	}
	
	virtual Version GetVersion()
	{
		return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
	}
	
	virtual void OnSyncChannel(chanrec* chan, Module* proto, void* opaque)
	{
		// this is called when the server is linking into a net and wants to sync channel data.
		// we should send our mode changes for the channel here to ensure that other servers
		// know whos +q/+a on the channel.
		chanuserlist cl = Srv->GetUsers(chan);
		string_list commands;
		for (unsigned int i = 0; i < cl.size(); i++)
		{
			if (cl[i]->GetExt("cm_founder_"+std::string(chan->name)))
			{
				proto->ProtoSendMode(opaque,TYPE_CHANNEL,chan,"+q "+std::string(cl[i]->nick));
			}
			if (cl[i]->GetExt("cm_protect_"+std::string(chan->name)))
			{
				proto->ProtoSendMode(opaque,TYPE_CHANNEL,chan,"+a "+std::string(cl[i]->nick));
			}
		}
	}

};


class ModuleChanProtectFactory : public ModuleFactory
{
 public:
	ModuleChanProtectFactory()
	{
	}
	
	~ModuleChanProtectFactory()
	{
	}
	
	virtual Module * CreateModule(Server* Me)
	{
		return new ModuleChanProtect(Me);
	}
	
};


extern "C" void * init_module( void )
{
	return new ModuleChanProtectFactory;
}