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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* +------------------------------------+
* | 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 "inspircd.h"
#include "xline.h"
#include "commands/cmd_nick.h"
extern "C" DllExport Command* init_command(InspIRCd* Instance)
{
return new cmd_nick(Instance);
}
/** Handle nick changes from users.
* NOTE: If you are used to ircds based on ircd2.8, and are looking
* for the client introduction code in here, youre in the wrong place.
* You need to look in the spanningtree module for this!
*/
CmdResult cmd_nick::Handle (const char** parameters, int pcnt, User *user)
{
char oldnick[NICKMAX];
if (!*parameters[0] || !*user->nick)
{
/* We cant put blanks in the parameters, so for this (extremely rare) issue we just put '*' here. */
user->WriteServ("432 %s * :Erroneous Nickname", *user->nick ? 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;
}
/* Check for nickname overruled -
* This happens when one user has connected and sent only NICK, and is essentially
* "camping" upon a nickname. To give the new user connecting a fair chance of having
* the nickname too, we force a nickchange on the older user (Simply the one who was
* here first, no TS checks need to take place here)
*/
User* InUse = ServerInstance->FindNickOnly(parameters[0]);
if (InUse && (InUse != user) && ((ServerInstance->IsNick(parameters[0]) || allowinvalid)))
{
if (InUse->registered != REG_ALL)
{
/* change the nick of the older user to its UUID
*/
InUse->WriteTo(InUse, "NICK %s", InUse->uuid);
InUse->WriteServ("433 %s %s :Nickname overruled.", InUse->nick, InUse->nick);
InUse->UpdateNickHash(InUse->uuid);
strlcpy(InUse->nick, InUse->uuid, NICKMAX - 1);
InUse->InvalidateCache();
/* Take away their nickname-sent state forcing them to send a nick again */
InUse->registered &= ~REG_NICK;
}
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)))
{
if (!allowinvalid)
{
user->WriteServ("432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
return CMD_FAILURE;
}
}
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;
if (user->registered == REG_ALL)
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();
/* Update display nicks */
for (UCListIter v = user->chans.begin(); v != user->chans.end(); v++)
{
CUList* ulist = v->first->GetUsers();
CUList::iterator i = ulist->find(user);
if (i != ulist->end())
i->second = user->nick;
}
if (user->registered < REG_NICKUSER)
{
user->registered = (user->registered | REG_NICK);
if (ServerInstance->Config->NoUserDns)
{
user->dns_done = true;
}
else
{
user->StartDNSLookup();
}
}
if (user->registered == REG_NICKUSER)
{
/* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
int MOD_RESULT = 0;
FOREACH_RESULT(I_OnUserRegister,OnUserRegister(user));
if (MOD_RESULT > 0)
return CMD_FAILURE;
}
if (user->registered == REG_ALL)
{
FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
}
return CMD_SUCCESS;
}
CmdResult cmd_nick::HandleInternal(const unsigned int id, const std::deque<classbase*> ¶meters)
{
allowinvalid = (id != 0);
return CMD_SUCCESS;
}
|
