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1 /*
2  * InspIRCd -- Internet Relay Chat Daemon
3  *
4  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
5  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
6  *   Copyright (C) 2004, 2006 Craig Edwards <craigedwards@brainbox.cc>
7  *
8  * This file is part of InspIRCd.  InspIRCd is free software: you can
9  * redistribute it and/or modify it under the terms of the GNU General Public
10  * License as published by the Free Software Foundation, version 2.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
15  * details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
19  */
20
21
22 #include "inspircd.h"
23
24 /* $ModDesc: Provides support for unreal-style channel mode +C */
25
26 class NoCTCP : public ModeHandler
27 {
28  public:
29         NoCTCP(Module* Creator) : ModeHandler(Creator, "noctcp", 'C', PARAM_NONE, MODETYPE_CHANNEL) { }
30
31         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
32         {
33                 if (adding)
34                 {
35                         if (!channel->IsModeSet('C'))
36                         {
37                                 channel->SetMode('C',true);
38                                 return MODEACTION_ALLOW;
39                         }
40                 }
41                 else
42                 {
43                         if (channel->IsModeSet('C'))
44                         {
45                                 channel->SetMode('C',false);
46                                 return MODEACTION_ALLOW;
47                         }
48                 }
49
50                 return MODEACTION_DENY;
51         }
52 };
53
54 class ModuleNoCTCP : public Module
55 {
56
57         NoCTCP nc;
58
59  public:
60
61         ModuleNoCTCP()
62                 : nc(this)
63         {
64                 if (!ServerInstance->Modes->AddMode(&nc))
65                         throw ModuleException("Could not add new modes!");
66                 Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_On005Numeric };
67                 ServerInstance->Modules->Attach(eventlist, this, 3);
68         }
69
70         virtual ~ModuleNoCTCP()
71         {
72         }
73
74         virtual Version GetVersion()
75         {
76                 return Version("Provides support for unreal-style channel mode +C", VF_VENDOR);
77         }
78
79         virtual ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
80         {
81                 return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
82         }
83
84         virtual ModResult OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
85         {
86                 if ((target_type == TYPE_CHANNEL) && (IS_LOCAL(user)))
87                 {
88                         Channel* c = (Channel*)dest;
89                         ModResult res = ServerInstance->OnCheckExemption(user,c,"noctcp");
90
91                         if (res == MOD_RES_ALLOW)
92                                 return MOD_RES_PASSTHRU;
93
94                         if (!c->GetExtBanStatus(user, 'C').check(!c->IsModeSet('C')))
95                         {
96                                 if ((text.length()) && (text[0] == '\1'))
97                                 {
98                                         if (strncmp(text.c_str(),"\1ACTION ",8))
99                                         {
100                                                 user->WriteNumeric(ERR_NOCTCPALLOWED, "%s %s :Can't send CTCP to channel (+C set)",user->nick.c_str(), c->name.c_str());
101                                                 return MOD_RES_DENY;
102                                         }
103                                 }
104                         }
105                 }
106                 return MOD_RES_PASSTHRU;
107         }
108
109         virtual void On005Numeric(std::string &output)
110         {
111                 ServerInstance->AddExtBanChar('C');
112         }
113 };
114
115 MODULE_INIT(ModuleNoCTCP)