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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
* 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 <signal.h>
#include "exitcodes.h"
#include "inspircd.h"
void InspIRCd::SignalHandler(int signal)
{
#ifdef _WIN32
if (signal == SIGTERM)
#else
if (signal == SIGHUP)
{
ServerInstance->SNO->WriteGlobalSno('a', "Rehashing due to SIGHUP");
Rehash();
}
else if (signal == SIGTERM)
#endif
{
Exit(EXIT_STATUS_SIGTERM);
}
}
void InspIRCd::Exit(int status)
{
#ifdef _WIN32
SetServiceStopped(status);
#endif
this->Cleanup();
ServerInstance = NULL;
delete this;
exit (status);
}
void InspIRCd::Rehash(const std::string& uuid)
{
if (!ServerInstance->ConfigThread)
{
ServerInstance->ConfigThread = new ConfigReaderThread(uuid);
ServerInstance->Threads.Start(ServerInstance->ConfigThread);
}
}
std::string InspIRCd::GetVersionString(bool getFullVersion)
{
if (getFullVersion)
return INSPIRCD_VERSION ". " + Config->ServerName + " :[" + Config->sid + "] " + Config->CustomVersion;
return INSPIRCD_BRANCH ". " + Config->ServerName + " :" + Config->CustomVersion;
}
std::string UIDGenerator::GenerateSID(const std::string& servername, const std::string& serverdesc)
{
unsigned int sid = 0;
for (std::string::const_iterator i = servername.begin(); i != servername.end(); ++i)
sid = 5 * sid + *i;
for (std::string::const_iterator i = serverdesc.begin(); i != serverdesc.end(); ++i)
sid = 5 * sid + *i;
std::string sidstr = ConvToStr(sid % 1000);
sidstr.insert(0, 3 - sidstr.length(), '0');
return sidstr;
}
void UIDGenerator::IncrementUID(unsigned int pos)
{
/*
* Okay. The rules for generating a UID go like this...
* -- > ABCDEFGHIJKLMNOPQRSTUVWXYZ --> 012345679 --> WRAP
* That is, we start at A. When we reach Z, we go to 0. At 9, we go to
* A again, in an iterative fashion.. so..
* AAA9 -> AABA, and so on. -- w00t
*/
// If we hit Z, wrap around to 0.
if (current_uid[pos] == 'Z')
{
current_uid[pos] = '0';
}
else if (current_uid[pos] == '9')
{
/*
* Or, if we hit 9, wrap around to pos = 'A' and (pos - 1)++,
* e.g. A9 -> BA -> BB ..
*/
current_uid[pos] = 'A';
if (pos == 3)
{
// At pos 3, if we hit '9', we've run out of available UIDs, and reset to AAA..AAA.
return;
}
this->IncrementUID(pos - 1);
}
else
{
// Anything else, nobody gives a shit. Just increment.
current_uid[pos]++;
}
}
void UIDGenerator::init(const std::string& sid)
{
/*
* Copy SID into the first three digits, 9's to the rest, null term at the end
* Why 9? Well, we increment before we find, otherwise we have an unnecessary copy, and I want UID to start at AAA..AA
* and not AA..AB. So by initialising to 99999, we force it to rollover to AAAAA on the first IncrementUID call.
* Kind of silly, but I like how it looks.
* -- w
*/
current_uid.resize(UUID_LENGTH, '9');
current_uid[0] = sid[0];
current_uid[1] = sid[1];
current_uid[2] = sid[2];
}
/*
* Retrieve the next valid UUID that is free for this server.
*/
std::string UIDGenerator::GetUID()
{
while (1)
{
// Add one to the last UID
this->IncrementUID(UUID_LENGTH - 1);
if (!ServerInstance->FindUUID(current_uid))
break;
/*
* It's in use. We need to try the loop again.
*/
}
return current_uid;
}
void ISupportManager::AppendValue(std::string& buffer, const std::string& value)
{
// If this token has no value then we have nothing to do.
if (value.empty())
return;
// This function implements value escaping according to the rules of the ISUPPORT draft:
// https://tools.ietf.org/html/draft-brocklesby-irc-isupport-03
buffer.push_back('=');
for (std::string::const_iterator iter = value.begin(); iter != value.end(); ++iter)
{
// The value must be escaped if:
// (1) It is a banned character in an IRC <middle> parameter (NUL, LF, CR, SPACE).
// (2) It has special meaning within an ISUPPORT token (EQUALS, BACKSLASH).
if (*iter == '\0' || *iter == '\n' || *iter == '\r' || *iter == ' ' || *iter == '=' || *iter == '\\')
buffer.append(InspIRCd::Format("\\x%X", *iter));
else
buffer.push_back(*iter);
}
}
void ISupportManager::Build()
{
/**
* This is currently the neatest way we can build the initial ISUPPORT map. In
* the future we can use an initializer list here.
*/
std::map<std::string, std::string> tokens;
tokens["AWAYLEN"] = ConvToStr(ServerInstance->Config->Limits.MaxAway);
tokens["CASEMAPPING"] = ServerInstance->Config->CaseMapping;
tokens["CHANLIMIT"] = InspIRCd::Format("#:%u", ServerInstance->Config->MaxChans);
tokens["CHANMODES"] = ServerInstance->Modes->GiveModeList(MODETYPE_CHANNEL);
tokens["CHANNELLEN"] = ConvToStr(ServerInstance->Config->Limits.ChanMax);
tokens["CHANTYPES"] = "#";
tokens["ELIST"] = "MU";
tokens["KICKLEN"] = ConvToStr(ServerInstance->Config->Limits.MaxKick);
tokens["MAXTARGETS"] = ConvToStr(ServerInstance->Config->MaxTargets);
tokens["MODES"] = ConvToStr(ServerInstance->Config->Limits.MaxModes);
tokens["NETWORK"] = ServerInstance->Config->Network;
tokens["NICKLEN"] = ConvToStr(ServerInstance->Config->Limits.NickMax);
tokens["PREFIX"] = ServerInstance->Modes->BuildPrefixes();
tokens["STATUSMSG"] = ServerInstance->Modes->BuildPrefixes(false);
tokens["TOPICLEN"] = ConvToStr(ServerInstance->Config->Limits.MaxTopic);
tokens["VBANLIST"];
// Modules can add new tokens and also edit or remove existing tokens
FOREACH_MOD(On005Numeric, (tokens));
// EXTBAN is a special case as we need to sort it and prepend a comma.
std::map<std::string, std::string>::iterator extban = tokens.find("EXTBAN");
if (extban != tokens.end())
{
std::sort(extban->second.begin(), extban->second.end());
extban->second.insert(0, ",");
}
// Transform the map into a list of lines, ready to be sent to clients
Numeric::Numeric numeric(RPL_ISUPPORT);
unsigned int token_count = 0;
cachedlines.clear();
for (std::map<std::string, std::string>::const_iterator it = tokens.begin(); it != tokens.end(); ++it)
{
numeric.push(it->first);
std::string& token = numeric.GetParams().back();
AppendValue(token, it->second);
token_count++;
if (token_count % 13 == 12 || it == --tokens.end())
{
// Reached maximum number of tokens for this line or the current token
// is the last one; finalize the line and store it for later use
numeric.push("are supported by this server");
cachedlines.push_back(numeric);
numeric.GetParams().clear();
}
}
}
void ISupportManager::SendTo(LocalUser* user)
{
for (std::vector<Numeric::Numeric>::const_iterator i = cachedlines.begin(); i != cachedlines.end(); ++i)
user->WriteNumeric(*i);
}
|
