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Dynamically determine the size of the eventlist[] passed to Attach()
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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  private:
31         char* hostmap;
32  public:
33         CommandSethost(Module* Creator, char* hmap) : Command(Creator,"SETHOST", 1), hostmap(hmap)
34         {
35                 flags_needed = 'o'; syntax = "<new-hostname>";
36                 TRANSLATE2(TR_TEXT, TR_END);
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->WriteServ("NOTICE "+user->nick+" :*** SETHOST: Invalid characters in hostname");
47                                 return CMD_FAILURE;
48                         }
49                 }
50                 if (len == 0)
51                 {
52                         user->WriteServ("NOTICE %s :*** SETHOST: Host must be specified", user->nick.c_str());
53                         return CMD_FAILURE;
54                 }
55                 if (len > 64)
56                 {
57                         user->WriteServ("NOTICE %s :*** SETHOST: Host too long",user->nick.c_str());
58                         return CMD_FAILURE;
59                 }
60
61                 if (user->ChangeDisplayedHost(parameters[0].c_str()))
62                 {
63                         ServerInstance->SNO->WriteGlobalSno('a', user->nick+" used SETHOST to change their displayed host to "+user->dhost);
64                         return CMD_SUCCESS;
65                 }
66
67                 return CMD_FAILURE;
68         }
69 };
70
71
72 class ModuleSetHost : public Module
73 {
74         CommandSethost cmd;
75         char hostmap[256];
76  public:
77         ModuleSetHost()
78                 : cmd(this, hostmap)
79         {
80         }
81
82         void init()
83         {
84                 OnRehash(NULL);
85                 ServerInstance->AddCommand(&cmd);
86                 Implementation eventlist[] = { I_OnRehash };
87                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
88         }
89
90         void OnRehash(User* user)
91         {
92                 std::string hmap = ServerInstance->Config->ConfValue("hostname")->getString("charmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789");
93
94                 memset(hostmap, 0, sizeof(hostmap));
95                 for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
96                         hostmap[(unsigned char)*n] = 1;
97         }
98
99         virtual ~ModuleSetHost()
100         {
101         }
102
103         virtual Version GetVersion()
104         {
105                 return Version("Provides support for the SETHOST command", VF_VENDOR);
106         }
107
108 };
109
110 MODULE_INIT(ModuleSetHost)