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1 /*
2  * InspIRCd -- Internet Relay Chat Daemon
3  *
4  *   Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
5  *   Copyright (C) 2005-2008 Robin Burchell <robin+git@viroteck.net>
6  *   Copyright (C) 2005-2006 Craig Edwards <craigedwards@brainbox.cc>
7  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
8  *
9  * This file is part of InspIRCd.  InspIRCd is free software: you can
10  * redistribute it and/or modify it under the terms of the GNU General Public
11  * License as published by the Free Software Foundation, version 2.
12  *
13  * This program is distributed in the hope that it will be useful, but WITHOUT
14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
15  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
16  * details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
20  */
21
22
23 #include "inspircd.h"
24 #include "xline.h"
25
26 /** Holds a CBAN item
27  */
28 class CBan : public XLine
29 {
30 private:
31         std::string displaytext;
32         irc::string matchtext;
33
34 public:
35         CBan(time_t s_time, long d, const std::string& src, const std::string& re, const std::string& ch)
36                 : XLine(s_time, d, src, re, "CBAN")
37         {
38                 this->displaytext = ch;
39                 this->matchtext = ch.c_str();
40         }
41
42         // XXX I shouldn't have to define this
43         bool Matches(User *u)
44         {
45                 return false;
46         }
47
48         bool Matches(const std::string &s)
49         {
50                 if (matchtext == s)
51                         return true;
52                 return false;
53         }
54
55         const std::string& Displayable()
56         {
57                 return displaytext;
58         }
59 };
60
61 /** An XLineFactory specialized to generate cban pointers
62  */
63 class CBanFactory : public XLineFactory
64 {
65  public:
66         CBanFactory() : XLineFactory("CBAN") { }
67
68         /** Generate a CBAN
69         */
70         XLine* Generate(time_t set_time, long duration, std::string source, std::string reason, std::string xline_specific_mask)
71         {
72                 return new CBan(set_time, duration, source, reason, xline_specific_mask);
73         }
74
75         bool AutoApplyToUserList(XLine *x)
76         {
77                 return false; // No, we apply to channels.
78         }
79 };
80
81 /** Handle /CBAN
82  */
83 class CommandCBan : public Command
84 {
85  public:
86         CommandCBan(Module* Creator) : Command(Creator, "CBAN", 1, 3)
87         {
88                 flags_needed = 'o'; this->syntax = "<channel> [<duration> :<reason>]";
89         }
90
91         CmdResult Handle(const std::vector<std::string> &parameters, User *user)
92         {
93                 /* syntax: CBAN #channel time :reason goes here */
94                 /* 'time' is a human-readable timestring, like 2d3h2s. */
95
96                 if (parameters.size() == 1)
97                 {
98                         if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "CBAN", user))
99                         {
100                                 ServerInstance->SNO->WriteGlobalSno('x', "%s removed CBan on %s.",user->nick.c_str(),parameters[0].c_str());
101                         }
102                         else
103                         {
104                                 user->WriteNotice("*** CBan " + parameters[0] + " not found in list, try /stats C.");
105                                 return CMD_FAILURE;
106                         }
107                 }
108                 else
109                 {
110                         // Adding - XXX todo make this respect <insane> tag perhaps..
111                         unsigned long duration = InspIRCd::Duration(parameters[1]);
112                         const char *reason = (parameters.size() > 2) ? parameters[2].c_str() : "No reason supplied";
113                         CBan* r = new CBan(ServerInstance->Time(), duration, user->nick.c_str(), reason, parameters[0].c_str());
114
115                         if (ServerInstance->XLines->AddLine(r, user))
116                         {
117                                 if (!duration)
118                                 {
119                                         ServerInstance->SNO->WriteGlobalSno('x', "%s added permanent CBan for %s: %s", user->nick.c_str(), parameters[0].c_str(), reason);
120                                 }
121                                 else
122                                 {
123                                         time_t c_requires_crap = duration + ServerInstance->Time();
124                                         std::string timestr = InspIRCd::TimeString(c_requires_crap);
125                                         ServerInstance->SNO->WriteGlobalSno('x', "%s added timed CBan for %s, expires on %s: %s", user->nick.c_str(), parameters[0].c_str(), timestr.c_str(), reason);
126                                 }
127                         }
128                         else
129                         {
130                                 delete r;
131                                 user->WriteNotice("*** CBan for " + parameters[0] + " already exists");
132                                 return CMD_FAILURE;
133                         }
134                 }
135                 return CMD_SUCCESS;
136         }
137
138         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
139         {
140                 if (IS_LOCAL(user))
141                         return ROUTE_LOCALONLY; // spanningtree will send ADDLINE
142
143                 return ROUTE_BROADCAST;
144         }
145 };
146
147 class ModuleCBan : public Module
148 {
149         CommandCBan mycommand;
150         CBanFactory f;
151
152  public:
153         ModuleCBan() : mycommand(this)
154         {
155         }
156
157         void init() CXX11_OVERRIDE
158         {
159                 ServerInstance->XLines->RegisterFactory(&f);
160         }
161
162         ~ModuleCBan()
163         {
164                 ServerInstance->XLines->DelAll("CBAN");
165                 ServerInstance->XLines->UnregisterFactory(&f);
166         }
167
168         ModResult OnStats(char symbol, User* user, string_list &out) CXX11_OVERRIDE
169         {
170                 if (symbol != 'C')
171                         return MOD_RES_PASSTHRU;
172
173                 ServerInstance->XLines->InvokeStats("CBAN", 210, user, out);
174                 return MOD_RES_DENY;
175         }
176
177         ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
178         {
179                 XLine *rl = ServerInstance->XLines->MatchesLine("CBAN", cname);
180
181                 if (rl)
182                 {
183                         // Channel is banned.
184                         user->WriteNumeric(384, "%s :Cannot join channel, CBANed (%s)", cname.c_str(), rl->reason.c_str());
185                         ServerInstance->SNO->WriteGlobalSno('a', "%s tried to join %s which is CBANed (%s)",
186                                  user->nick.c_str(), cname.c_str(), rl->reason.c_str());
187                         return MOD_RES_DENY;
188                 }
189
190                 return MOD_RES_PASSTHRU;
191         }
192
193         Version GetVersion() CXX11_OVERRIDE
194         {
195                 return Version("Gives /cban, aka C:lines. Think Q:lines, for channels.", VF_COMMON | VF_VENDOR);
196         }
197 };
198
199 MODULE_INIT(ModuleCBan)