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Fix some logically dead code which was found by Coverity.
[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                 if ((!dest) || (dest->registered != REG_ALL))
63                 {
64                         user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel", user->nick.c_str(), parameters[0].c_str());
65                         return CMD_FAILURE;
66                 }
67
68                 if (IS_LOCAL(dest))
69                 {
70                         if ((dest->ChangeDisplayedHost(parameters[1].c_str())) && (!ServerInstance->ULine(user->server)))
71                         {
72                                 // fix by brain - ulines set hosts silently
73                                 ServerInstance->SNO->WriteGlobalSno('a', user->nick+" used CHGHOST to make the displayed host of "+dest->nick+" become "+dest->dhost);
74                         }
75                 }
76
77                 return CMD_SUCCESS;
78         }
79
80         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
81         {
82                 User* dest = ServerInstance->FindNick(parameters[0]);
83                 if (dest)
84                         return ROUTE_OPT_UCAST(dest->server);
85                 return ROUTE_LOCALONLY;
86         }
87 };
88
89
90 class ModuleChgHost : public Module
91 {
92         CommandChghost cmd;
93         char hostmap[256];
94  public:
95         ModuleChgHost() : cmd(this, hostmap)
96         {
97         }
98
99         void init()
100         {
101                 OnRehash(NULL);
102                 ServerInstance->Modules->AddService(cmd);
103                 Implementation eventlist[] = { I_OnRehash };
104                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
105         }
106
107         void OnRehash(User* user)
108         {
109                 std::string hmap = ServerInstance->Config->ConfValue("hostname")->getString("charmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789");
110
111                 memset(hostmap, 0, sizeof(hostmap));
112                 for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
113                         hostmap[(unsigned char)*n] = 1;
114         }
115
116         ~ModuleChgHost()
117         {
118         }
119
120         Version GetVersion()
121         {
122                 return Version("Provides support for the CHGHOST command", VF_OPTCOMMON | VF_VENDOR);
123         }
124
125 };
126
127 MODULE_INIT(ModuleChgHost)