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1 /*
2  * InspIRCd -- Internet Relay Chat Daemon
3  *
4  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
5  *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
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 the SETHOST command */
25
26 /** Handle /SETHOST
27  */
28 class CommandSethost : public Command
29 {
30         char* hostmap;
31
32  public:
33         CommandSethost(Module* Creator, char* hmap) : Command(Creator,"SETHOST", 1), hostmap(hmap)
34         {
35                 allow_empty_last_param = false;
36                 flags_needed = 'o'; syntax = "<new-hostname>";
37         }
38
39         CmdResult Handle (const std::vector<std::string>& parameters, User *user)
40         {
41                 size_t len = 0;
42                 for (std::string::const_iterator x = parameters[0].begin(); x != parameters[0].end(); x++, len++)
43                 {
44                         if (!hostmap[(const unsigned char)*x])
45                         {
46                                 user->WriteNotice("*** SETHOST: Invalid characters in hostname");
47                                 return CMD_FAILURE;
48                         }
49                 }
50
51                 if (len > 64)
52                 {
53                         user->WriteNotice("*** SETHOST: Host too long");
54                         return CMD_FAILURE;
55                 }
56
57                 if (user->ChangeDisplayedHost(parameters[0].c_str()))
58                 {
59                         ServerInstance->SNO->WriteGlobalSno('a', user->nick+" used SETHOST to change their displayed host to "+user->dhost);
60                         return CMD_SUCCESS;
61                 }
62
63                 return CMD_FAILURE;
64         }
65 };
66
67
68 class ModuleSetHost : public Module
69 {
70         CommandSethost cmd;
71         char hostmap[256];
72
73  public:
74         ModuleSetHost()
75                 : cmd(this, hostmap)
76         {
77         }
78
79         void init() CXX11_OVERRIDE
80         {
81                 OnRehash(NULL);
82                 ServerInstance->Modules->AddService(cmd);
83                 Implementation eventlist[] = { I_OnRehash };
84                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
85         }
86
87         void OnRehash(User* user) CXX11_OVERRIDE
88         {
89                 std::string hmap = ServerInstance->Config->ConfValue("hostname")->getString("charmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789");
90
91                 memset(hostmap, 0, sizeof(hostmap));
92                 for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
93                         hostmap[(unsigned char)*n] = 1;
94         }
95
96         Version GetVersion() CXX11_OVERRIDE
97         {
98                 return Version("Provides support for the SETHOST command", VF_VENDOR);
99         }
100 };
101
102 MODULE_INIT(ModuleSetHost)