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
176
177
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "commands.h"
#include "utils.h"
#include "treeserver.h"
CmdResult CommandUID::Handle(const parameterlist ¶ms, User* serversrc)
{
SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
/** Do we have enough parameters:
* 0 1 2 3 4 5 6 7 8 9 (n-1)
* UID uuid age nick host dhost ident ip.string signon +modes (modepara) :gecos
*/
time_t age_t = ConvToInt(params[1]);
time_t signon = ConvToInt(params[7]);
std::string empty;
const std::string& modestr = params[8];
TreeServer* remoteserver = Utils->FindServer(serversrc->server);
if (!remoteserver)
return CMD_INVALID;
/* Is this a valid UID, and not misrouted? */
if (params[0].length() != 9 || params[0].substr(0,3) != serversrc->uuid)
return CMD_INVALID;
/* Check parameters for validity before introducing the client, discovered by dmb */
if (!age_t)
return CMD_INVALID;
if (!signon)
return CMD_INVALID;
if (modestr[0] != '+')
return CMD_INVALID;
TreeSocket* sock = remoteserver->GetRoute()->GetSocket();
/* check for collision */
user_hash::iterator iter = ServerInstance->Users->clientlist->find(params[2]);
if (iter != ServerInstance->Users->clientlist->end())
{
/*
* Nick collision.
*/
int collide = sock->DoCollision(iter->second, age_t, params[5], params[6], params[0]);
ServerInstance->Logs->Log("m_spanningtree",LOG_DEBUG,"*** Collision on %s, collide=%d", params[2].c_str(), collide);
if (collide != 1)
{
/* remote client lost, make sure we change their nick for the hash too
*
* This alters the line that will be sent to other servers, which
* commands normally shouldn't do; hence the required const_cast.
*/
const_cast<parameterlist&>(params)[2] = params[0];
}
}
/* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically
* sets it up in the UUID hash for us.
*/
User* _new = NULL;
try
{
_new = new RemoteUser(params[0], remoteserver->GetName());
}
catch (...)
{
ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Duplicate UUID %s in client introduction", params[0].c_str());
return CMD_INVALID;
}
(*(ServerInstance->Users->clientlist))[params[2]] = _new;
_new->nick = params[2];
_new->host = params[3];
_new->dhost = params[4];
_new->ident = params[5];
_new->fullname = params[params.size() - 1];
_new->registered = REG_ALL;
_new->signon = signon;
_new->age = age_t;
unsigned int paramptr = 9;
// Accept more '+' chars, for now
std::string::size_type pos = modestr.find_first_not_of('+');
for (std::string::const_iterator v = modestr.begin()+pos; v != modestr.end(); ++v)
{
/* For each mode thats set, find the mode handler and set it on the new user */
ModeHandler* mh = ServerInstance->Modes->FindMode(*v, MODETYPE_USER);
if (!mh)
{
ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Unrecognised mode '%c' for a user in UID, dropping link", *v);
return CMD_INVALID;
}
if (mh->GetNumParams(true))
{
if (paramptr >= params.size() - 1)
return CMD_INVALID;
std::string mp = params[paramptr++];
/* IMPORTANT NOTE:
* All modes are assumed to succeed here as they are being set by a remote server.
* Modes CANNOT FAIL here. If they DO fail, then the failure is ignored. This is important
* to note as all but one modules currently cannot ever fail in this situation, except for
* m_servprotect which specifically works this way to prevent the mode being set ANYWHERE
* but here, at client introduction. You may safely assume this behaviour is standard and
* will not change in future versions if you want to make use of this protective behaviour
* yourself.
*/
mh->OnModeChange(_new, _new, NULL, mp, true);
}
else
mh->OnModeChange(_new, _new, NULL, empty, true);
_new->SetMode(*v, true);
}
_new->SetClientIP(params[6].c_str());
ServerInstance->Users->AddGlobalClone(_new);
remoteserver->UserCount++;
bool dosend = true;
if ((Utils->quiet_bursts && remoteserver->bursting) || ServerInstance->SilentULine(_new->server))
dosend = false;
if (dosend)
ServerInstance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s (%s) [%s]", _new->server.c_str(), _new->GetFullRealHost().c_str(), _new->GetIPString().c_str(), _new->fullname.c_str());
FOREACH_MOD(I_OnPostConnect,OnPostConnect(_new));
return CMD_SUCCESS;
}
CmdResult CommandFHost::Handle(const parameterlist ¶ms, User* src)
{
if (IS_SERVER(src))
return CMD_FAILURE;
src->ChangeDisplayedHost(params[0].c_str());
return CMD_SUCCESS;
}
CmdResult CommandFIdent::Handle(const parameterlist ¶ms, User* src)
{
if (IS_SERVER(src))
return CMD_FAILURE;
src->ChangeIdent(params[0].c_str());
return CMD_SUCCESS;
}
CmdResult CommandFName::Handle(const parameterlist ¶ms, User* src)
{
if (IS_SERVER(src))
return CMD_FAILURE;
src->ChangeName(params[0].c_str());
return CMD_SUCCESS;
}
|
