1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "configreader.h"
#include "users.h"
#include "modules.h"
#include "inspircd.h"
#include "xline.h"
#include "commands/cmd_nick.h"
extern "C" command_t* init_command(InspIRCd* Instance)
{
return new cmd_nick(Instance);
}
CmdResult cmd_nick::Handle (const char** parameters, int pcnt, userrec *user)
{
char oldnick[NICKMAX];
if (!*parameters[0])
return CMD_FAILURE;
if (!*user->nick)
return CMD_FAILURE;
if (irc::string(user->nick) == irc::string(parameters[0]))
{
/* If its exactly the same, even case, dont do anything. */
if (!strcmp(user->nick,parameters[0]))
return CMD_SUCCESS;
/* Its a change of case. People insisted that they should be
* able to do silly things like this even though the RFC says
* the nick AAA is the same as the nick aaa.
*/
strlcpy(oldnick, user->nick, NICKMAX - 1);
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
if (MOD_RESULT)
return CMD_FAILURE;
if (user->registered == REG_ALL)
user->WriteCommon("NICK %s",parameters[0]);
strlcpy(user->nick, parameters[0], NICKMAX - 1);
user->InvalidateCache();
FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
return CMD_SUCCESS;
}
else
{
QLine* mq = ServerInstance->XLines->matches_qline(parameters[0]);
if (mq)
{
ServerInstance->SNO->WriteToSnoMask('x', "Q-Lined nickname %s from %s!%s@%s: %s", parameters[0], user->nick, user->ident, user->host, mq->reason);
user->WriteServ("432 %s %s :Invalid nickname: %s",user->nick,parameters[0], mq->reason);
return CMD_FAILURE;
}
if ((ServerInstance->FindNick(parameters[0])) && (ServerInstance->FindNick(parameters[0]) != user) && (ServerInstance->IsNick(parameters[0])))
{
userrec* InUse = ServerInstance->FindNick(parameters[0]);
if (InUse->registered != REG_ALL)
{
/* change the nick of the older user to nnn-overruled,
* where nnn is their file descriptor. We know this to be unique.
*/
std::string changeback = ConvToStr(InUse->GetFd()) + "-overruled";
InUse->WriteTo(InUse, "NICK %s", changeback.c_str());
InUse->WriteServ("433 %s %s :Nickname overruled.", InUse->nick, InUse->nick);
InUse->UpdateNickHash(changeback.c_str());
strlcpy(InUse->nick, changeback.c_str(), NICKMAX - 1);
InUse->InvalidateCache();
}
else
{
user->WriteServ("433 %s %s :Nickname is already in use.", user->registered >= REG_NICK ? user->nick : "*", parameters[0]);
return CMD_FAILURE;
}
}
}
if ((!ServerInstance->IsNick(parameters[0])) && (IS_LOCAL(user)))
{
user->WriteServ("432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
return CMD_FAILURE;
}
if (user->registered == REG_ALL)
{
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
if (MOD_RESULT) {
// if a module returns true, the nick change is silently forbidden.
return CMD_FAILURE;
}
user->WriteCommon("NICK %s",parameters[0]);
}
strlcpy(oldnick, user->nick, NICKMAX - 1);
/* change the nick of the user in the users_hash */
user = user->UpdateNickHash(parameters[0]);
/* actually change the nick within the record */
if (!user) return CMD_FAILURE;
if (!*user->nick) return CMD_FAILURE;
strlcpy(user->nick, parameters[0], NICKMAX - 1);
user->InvalidateCache();
if (user->registered < REG_NICKUSER)
{
user->registered = (user->registered | REG_NICK);
if (ServerInstance->Config->NoUserDns)
{
user->dns_done = true;
ServerInstance->next_call = ServerInstance->Time();
}
else
{
user->StartDNSLookup();
if (user->dns_done)
{
/* Cached result or instant failure - fall right through if possible */
ServerInstance->next_call = ServerInstance->Time();
}
else
{
if (ServerInstance->next_call > ServerInstance->Time() + ServerInstance->Config->dns_timeout)
ServerInstance->next_call = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
}
}
}
if (user->registered == REG_NICKUSER)
{
/* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
FOREACH_MOD(I_OnUserRegister,OnUserRegister(user));
//ConnectUser(user,NULL);
}
if (user->registered == REG_ALL)
{
FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
}
return CMD_SUCCESS;
}
|
