+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2019 nia <nia@netbsd.org>
+ * Copyright (C) 2013-2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2013, 2016-2017, 2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2013 Adam <Adam@anope.org>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008, 2010 Craig Edwards <brain@inspircd.org>
+ * 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 "inspircd.h"
+#include "exitcodes.h"
+#include <signal.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["CHANNELLEN"] = ConvToStr(ServerInstance->Config->Limits.ChanMax);
+ tokens["CHANTYPES"] = "#";
+ tokens["HOSTLEN"] = ConvToStr(ServerInstance->Config->Limits.MaxHost);
+ tokens["KICKLEN"] = ConvToStr(ServerInstance->Config->Limits.MaxKick);
+ tokens["LINELEN"] = ConvToStr(ServerInstance->Config->Limits.MaxLine);
+ tokens["MAXTARGETS"] = ConvToStr(ServerInstance->Config->MaxTargets);
+ tokens["MODES"] = ConvToStr(ServerInstance->Config->Limits.MaxModes);
+ tokens["NAMELEN"] = ConvToStr(ServerInstance->Config->Limits.MaxReal);
+ 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["USERLEN"] = ConvToStr(ServerInstance->Config->Limits.IdentMax);
+
+ // 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);
+}
projects / user / henk / code / inspircd.git / blobdiff