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Merge pull request #1157 from SaberUK/insp20+fix-cron-restart
[user/henk/code/inspircd.git] / src / modules / m_chghost.cpp
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 CHGHOST command */
25
26 /** Handle /CHGHOST
27  */
28 class CommandChghost : public Command
29 {
30  private:
31         char* hostmap;
32  public:
33         CommandChghost(Module* Creator, char* hmap) : Command(Creator,"CHGHOST", 2), hostmap(hmap)
34         {
35                 allow_empty_last_param = false;
36                 flags_needed = 'o';
37                 syntax = "<nick> <newhost>";
38                 TRANSLATE3(TR_NICK, TR_TEXT, TR_END);
39         }
40
41         CmdResult Handle(const std::vector<std::string> &parameters, User *user)
42         {
43                 const char* x = parameters[1].c_str();
44
45                 if (parameters[1].length() > 63)
46                 {
47                         user->WriteServ("NOTICE %s :*** CHGHOST: Host too long", user->nick.c_str());
48                         return CMD_FAILURE;
49                 }
50
51                 for (; *x; x++)
52                 {
53                         if (!hostmap[(unsigned char)*x])
54                         {
55                                 user->WriteServ("NOTICE "+user->nick+" :*** CHGHOST: Invalid characters in hostname");
56                                 return CMD_FAILURE;
57                         }
58                 }
59
60                 User* dest = ServerInstance->FindNick(parameters[0]);
61
62                 // Allow services to change the host of unregistered users
63                 if ((!dest) || ((dest->registered != REG_ALL) && (!ServerInstance->ULine(user->server))))
64                 {
65                         user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel", user->nick.c_str(), parameters[0].c_str());
66                         return CMD_FAILURE;
67                 }
68
69                 if (IS_LOCAL(dest))
70                 {
71                         if ((dest->ChangeDisplayedHost(parameters[1].c_str())) && (!ServerInstance->ULine(user->server)))
72                         {
73                                 // fix by brain - ulines set hosts silently
74                                 ServerInstance->SNO->WriteGlobalSno('a', user->nick+" used CHGHOST to make the displayed host of "+dest->nick+" become "+dest->dhost);
75                         }
76                 }
77
78                 return CMD_SUCCESS;
79         }
80
81         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
82         {
83                 User* dest = ServerInstance->FindNick(parameters[0]);
84                 if (dest)
85                         return ROUTE_OPT_UCAST(dest->server);
86                 return ROUTE_LOCALONLY;
87         }
88 };
89
90
91 class ModuleChgHost : public Module
92 {
93         CommandChghost cmd;
94         char hostmap[256];
95  public:
96         ModuleChgHost() : cmd(this, hostmap)
97         {
98         }
99
100         void init()
101         {
102                 OnRehash(NULL);
103                 ServerInstance->Modules->AddService(cmd);
104                 Implementation eventlist[] = { I_OnRehash };
105                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
106         }
107
108         void OnRehash(User* user)
109         {
110                 std::string hmap = ServerInstance->Config->ConfValue("hostname")->getString("charmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789");
111
112                 memset(hostmap, 0, sizeof(hostmap));
113                 for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
114                         hostmap[(unsigned char)*n] = 1;
115         }
116
117         ~ModuleChgHost()
118         {
119         }
120
121         Version GetVersion()
122         {
123                 return Version("Provides support for the CHGHOST command", VF_OPTCOMMON | VF_VENDOR);
124         }
125
126 };
127
128 MODULE_INIT(ModuleChgHost)