]> git.netwichtig.de Git - user/henk/code/inspircd.git/blob - src/configreader.cpp
Move <security:hidesplits> to the spanningtree module.
[user/henk/code/inspircd.git] / src / configreader.cpp
1 /*
2  * InspIRCd -- Internet Relay Chat Daemon
3  *
4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
5  *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
6  *   Copyright (C) 2006-2009 Dennis Friis <peavey@inspircd.org>
7  *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
8  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
9  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
10  *
11  * This file is part of InspIRCd.  InspIRCd is free software: you can
12  * redistribute it and/or modify it under the terms of the GNU General Public
13  * License as published by the Free Software Foundation, version 2.
14  *
15  * This program is distributed in the hope that it will be useful, but WITHOUT
16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
22  */
23
24
25 #include "inspircd.h"
26 #include "xline.h"
27 #include "listmode.h"
28 #include "exitcodes.h"
29 #include "configparser.h"
30 #include <iostream>
31
32 ServerLimits::ServerLimits(ConfigTag* tag)
33         : NickMax(tag->getUInt("maxnick", 30))
34         , ChanMax(tag->getUInt("maxchan", 64))
35         , MaxModes(tag->getUInt("maxmodes", 20))
36         , IdentMax(tag->getUInt("maxident", 10))
37         , MaxQuit(tag->getUInt("maxquit", 255))
38         , MaxTopic(tag->getUInt("maxtopic", 307))
39         , MaxKick(tag->getUInt("maxkick", 255))
40         , MaxReal(tag->getUInt("maxreal", tag->getUInt("maxgecos", 128)))
41         , MaxAway(tag->getUInt("maxaway", 200))
42         , MaxLine(tag->getUInt("maxline", 512))
43         , MaxHost(tag->getUInt("maxhost", 64))
44 {
45 }
46
47 ServerConfig::ServerPaths::ServerPaths(ConfigTag* tag)
48         : Config(tag->getString("configdir", INSPIRCD_CONFIG_PATH))
49         , Data(tag->getString("datadir", INSPIRCD_DATA_PATH))
50         , Log(tag->getString("logdir", INSPIRCD_LOG_PATH))
51         , Module(tag->getString("moduledir", INSPIRCD_MODULE_PATH))
52 {
53 }
54
55 static ConfigTag* CreateEmptyTag()
56 {
57         ConfigItems* items;
58         return ConfigTag::create("empty", "<auto>", 0, items);
59 }
60
61 ServerConfig::ServerConfig()
62         : EmptyTag(CreateEmptyTag())
63         , Limits(EmptyTag)
64         , Paths(EmptyTag)
65         , RawLog(false)
66         , NoSnoticeStack(false)
67 {
68 }
69
70 ServerConfig::~ServerConfig()
71 {
72         delete EmptyTag;
73 }
74
75 bool ServerConfig::ApplyDisabledCommands()
76 {
77         // Enable everything first.
78         const CommandParser::CommandMap& commands = ServerInstance->Parser.GetCommands();
79         for (CommandParser::CommandMap::const_iterator x = commands.begin(); x != commands.end(); ++x)
80                 x->second->Disable(false);
81
82         // Now disable the commands specified in the config.
83         std::string command;
84         irc::spacesepstream commandlist(ConfValue("disabled")->getString("commands"));
85         while (commandlist.GetToken(command))
86         {
87                 Command* handler = ServerInstance->Parser.GetHandler(command);
88                 if (!handler)
89                 {
90                         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Unable to disable the %s command as it does not exist!", command.c_str());
91                         continue;
92                 }
93
94                 ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "The %s command has been disabled", command.c_str());
95                 handler->Disable(true);
96         }
97         return true;
98 }
99
100 static void ReadXLine(ServerConfig* conf, const std::string& tag, const std::string& key, XLineFactory* make)
101 {
102         ConfigTagList tags = conf->ConfTags(tag);
103         for(ConfigIter i = tags.first; i != tags.second; ++i)
104         {
105                 ConfigTag* ctag = i->second;
106                 std::string mask;
107                 if (!ctag->readString(key, mask))
108                         throw CoreException("<"+tag+":"+key+"> missing at " + ctag->getTagLocation());
109                 std::string reason = ctag->getString("reason", "<Config>");
110                 XLine* xl = make->Generate(ServerInstance->Time(), 0, "<Config>", reason, mask);
111                 xl->from_config = true;
112                 if (!ServerInstance->XLines->AddLine(xl, NULL))
113                         delete xl;
114         }
115 }
116
117 typedef std::map<std::string, ConfigTag*> LocalIndex;
118 void ServerConfig::CrossCheckOperClassType()
119 {
120         LocalIndex operclass;
121         ConfigTagList tags = ConfTags("class");
122         for(ConfigIter i = tags.first; i != tags.second; ++i)
123         {
124                 ConfigTag* tag = i->second;
125                 std::string name = tag->getString("name");
126                 if (name.empty())
127                         throw CoreException("<class:name> missing from tag at " + tag->getTagLocation());
128                 if (operclass.find(name) != operclass.end())
129                         throw CoreException("Duplicate class block with name " + name + " at " + tag->getTagLocation());
130                 operclass[name] = tag;
131         }
132         tags = ConfTags("type");
133         for(ConfigIter i = tags.first; i != tags.second; ++i)
134         {
135                 ConfigTag* tag = i->second;
136                 std::string name = tag->getString("name");
137                 if (name.empty())
138                         throw CoreException("<type:name> is missing from tag at " + tag->getTagLocation());
139                 if (OperTypes.find(name) != OperTypes.end())
140                         throw CoreException("Duplicate type block with name " + name + " at " + tag->getTagLocation());
141
142                 OperInfo* ifo = new OperInfo(name);
143                 OperTypes[name] = ifo;
144                 ifo->type_block = tag;
145
146                 std::string classname;
147                 irc::spacesepstream str(tag->getString("classes"));
148                 while (str.GetToken(classname))
149                 {
150                         LocalIndex::iterator cls = operclass.find(classname);
151                         if (cls == operclass.end())
152                                 throw CoreException("Oper type " + name + " has missing class " + classname);
153                         ifo->class_blocks.push_back(cls->second);
154                 }
155         }
156
157         tags = ConfTags("oper");
158         for(ConfigIter i = tags.first; i != tags.second; ++i)
159         {
160                 ConfigTag* tag = i->second;
161
162                 std::string name = tag->getString("name");
163                 if (name.empty())
164                         throw CoreException("<oper:name> missing from tag at " + tag->getTagLocation());
165
166                 std::string type = tag->getString("type");
167                 OperIndex::iterator tblk = OperTypes.find(type);
168                 if (tblk == OperTypes.end())
169                         throw CoreException("Oper block " + name + " has missing type " + type);
170                 if (oper_blocks.find(name) != oper_blocks.end())
171                         throw CoreException("Duplicate oper block with name " + name + " at " + tag->getTagLocation());
172
173                 OperInfo* ifo = new OperInfo(type);
174                 ifo->oper_block = tag;
175                 ifo->type_block = tblk->second->type_block;
176                 ifo->class_blocks.assign(tblk->second->class_blocks.begin(), tblk->second->class_blocks.end());
177                 oper_blocks[name] = ifo;
178         }
179 }
180
181 void ServerConfig::CrossCheckConnectBlocks(ServerConfig* current)
182 {
183         typedef std::map<std::string, ConnectClass*> ClassMap;
184         ClassMap oldBlocksByMask;
185         if (current)
186         {
187                 for(ClassVector::iterator i = current->Classes.begin(); i != current->Classes.end(); ++i)
188                 {
189                         ConnectClass* c = *i;
190                         if (c->name.compare(0, 8, "unnamed-", 8))
191                         {
192                                 oldBlocksByMask["n" + c->name] = c;
193                         }
194                         else if (c->type == CC_ALLOW || c->type == CC_DENY)
195                         {
196                                 std::string typeMask = (c->type == CC_ALLOW) ? "a" : "d";
197                                 typeMask += c->host;
198                                 oldBlocksByMask[typeMask] = c;
199                         }
200                 }
201         }
202
203         size_t blk_count = config_data.count("connect");
204         if (blk_count == 0)
205         {
206                 // No connect blocks found; make a trivial default block
207                 ConfigItems* items;
208                 ConfigTag* tag = ConfigTag::create("connect", "<auto>", 0, items);
209                 (*items)["allow"] = "*";
210                 config_data.insert(std::make_pair("connect", tag));
211                 blk_count = 1;
212         }
213
214         Classes.resize(blk_count);
215         std::map<std::string, size_t> names;
216
217         bool try_again = true;
218         for(size_t tries = 0; try_again; tries++)
219         {
220                 try_again = false;
221                 ConfigTagList tags = ConfTags("connect");
222                 size_t i = 0;
223                 for(ConfigIter it = tags.first; it != tags.second; ++it, ++i)
224                 {
225                         ConfigTag* tag = it->second;
226                         if (Classes[i])
227                                 continue;
228
229                         ConnectClass* parent = NULL;
230                         std::string parentName = tag->getString("parent");
231                         if (!parentName.empty())
232                         {
233                                 std::map<std::string, size_t>::const_iterator parentIter = names.find(parentName);
234                                 if (parentIter == names.end())
235                                 {
236                                         try_again = true;
237                                         // couldn't find parent this time. If it's the last time, we'll never find it.
238                                         if (tries >= blk_count)
239                                                 throw CoreException("Could not find parent connect class \"" + parentName + "\" for connect block at " + tag->getTagLocation());
240                                         continue;
241                                 }
242                                 parent = Classes[parentIter->second];
243                         }
244
245                         std::string name = tag->getString("name");
246                         std::string mask, typeMask;
247                         char type;
248
249                         if (tag->readString("allow", mask, false))
250                         {
251                                 type = CC_ALLOW;
252                                 typeMask = 'a' + mask;
253                         }
254                         else if (tag->readString("deny", mask, false))
255                         {
256                                 type = CC_DENY;
257                                 typeMask = 'd' + mask;
258                         }
259                         else if (!name.empty())
260                         {
261                                 type = CC_NAMED;
262                                 mask = name;
263                                 typeMask = 'n' + mask;
264                         }
265                         else
266                         {
267                                 throw CoreException("Connect class must have allow, deny, or name specified at " + tag->getTagLocation());
268                         }
269
270                         if (name.empty())
271                         {
272                                 name = "unnamed-" + ConvToStr(i);
273                         }
274                         else
275                         {
276                                 typeMask = 'n' + name;
277                         }
278
279                         if (names.find(name) != names.end())
280                                 throw CoreException("Two connect classes with name \"" + name + "\" defined!");
281                         names[name] = i;
282
283                         ConnectClass* me = parent ?
284                                 new ConnectClass(tag, type, mask, *parent) :
285                                 new ConnectClass(tag, type, mask);
286
287                         me->name = name;
288
289                         me->registration_timeout = tag->getDuration("timeout", me->registration_timeout);
290                         me->pingtime = tag->getDuration("pingfreq", me->pingtime);
291                         std::string sendq;
292                         if (tag->readString("sendq", sendq))
293                         {
294                                 // attempt to guess a good hard/soft sendq from a single value
295                                 unsigned long value = strtoul(sendq.c_str(), NULL, 10);
296                                 if (value > 16384)
297                                         me->softsendqmax = value / 16;
298                                 else
299                                         me->softsendqmax = value;
300                                 me->hardsendqmax = value * 8;
301                         }
302                         me->softsendqmax = tag->getUInt("softsendq", me->softsendqmax);
303                         me->hardsendqmax = tag->getUInt("hardsendq", me->hardsendqmax);
304                         me->recvqmax = tag->getUInt("recvq", me->recvqmax);
305                         me->penaltythreshold = tag->getUInt("threshold", me->penaltythreshold);
306                         me->commandrate = tag->getUInt("commandrate", me->commandrate);
307                         me->fakelag = tag->getBool("fakelag", me->fakelag);
308                         me->maxlocal = tag->getUInt("localmax", me->maxlocal);
309                         me->maxglobal = tag->getUInt("globalmax", me->maxglobal);
310                         me->maxchans = tag->getUInt("maxchans", me->maxchans);
311                         me->maxconnwarn = tag->getBool("maxconnwarn", me->maxconnwarn);
312                         me->limit = tag->getUInt("limit", me->limit);
313                         me->resolvehostnames = tag->getBool("resolvehostnames", me->resolvehostnames);
314
315                         std::string ports = tag->getString("port");
316                         if (!ports.empty())
317                         {
318                                 irc::portparser portrange(ports, false);
319                                 while (int port = portrange.GetToken())
320                                         me->ports.insert(port);
321                         }
322
323                         ClassMap::iterator oldMask = oldBlocksByMask.find(typeMask);
324                         if (oldMask != oldBlocksByMask.end())
325                         {
326                                 ConnectClass* old = oldMask->second;
327                                 oldBlocksByMask.erase(oldMask);
328                                 old->Update(me);
329                                 delete me;
330                                 me = old;
331                         }
332                         Classes[i] = me;
333                 }
334         }
335 }
336
337 /** Represents a deprecated configuration tag.
338  */
339 struct DeprecatedConfig
340 {
341         /** Tag name. */
342         std::string tag;
343
344         /** Attribute key. */
345         std::string key;
346
347         /** Attribute value. */
348         std::string value;
349
350         /** Reason for deprecation. */
351         std::string reason;
352 };
353
354 static const DeprecatedConfig ChangedConfig[] = {
355         { "bind",        "transport",   "",                 "has been moved to <bind:ssl> as of 2.0" },
356         { "die",         "value",       "",                 "you need to reread your config" },
357         { "gnutls",      "starttls",    "",                 "has been replaced with m_starttls as of 3.0" },
358         { "link",        "autoconnect", "",                 "2.0+ does not use this attribute - define <autoconnect> tags instead" },
359         { "link",        "transport",   "",                 "has been moved to <link:ssl> as of 2.0" },
360         { "module",      "name",        "m_chanprotect.so", "has been replaced with m_customprefix as of 3.0" },
361         { "module",      "name",        "m_halfop.so",      "has been replaced with m_customprefix as of 3.0" },
362         { "options",     "cyclehosts",  "",                 "has been replaced with m_hostcycle as of 3.0" },
363         { "performance", "nouserdns",   "",                 "has been moved to <connect:resolvehostnames> as of 3.0" }
364 };
365
366 void ServerConfig::Fill()
367 {
368         ConfigTag* options = ConfValue("options");
369         ConfigTag* security = ConfValue("security");
370         ConfigTag* server = ConfValue("server");
371         if (sid.empty())
372         {
373                 ServerName = server->getString("name", "irc.example.com", InspIRCd::IsHost);
374
375                 sid = server->getString("id");
376                 if (!sid.empty() && !InspIRCd::IsSID(sid))
377                         throw CoreException(sid + " is not a valid server ID. A server ID must be 3 characters long, with the first character a digit and the next two characters a digit or letter.");
378
379                 CaseMapping = options->getString("casemapping", "rfc1459");
380                 if (CaseMapping == "ascii")
381                         national_case_insensitive_map = ascii_case_insensitive_map;
382                 else if (CaseMapping == "rfc1459")
383                         national_case_insensitive_map = rfc_case_insensitive_map;
384                 else
385                         throw CoreException("<options:casemapping> must be set to 'ascii', or 'rfc1459'");
386         }
387         else
388         {
389                 std::string name = server->getString("name");
390                 if (!name.empty() && name != ServerName)
391                         throw CoreException("You must restart to change the server name");
392
393                 std::string nsid = server->getString("id");
394                 if (!nsid.empty() && nsid != sid)
395                         throw CoreException("You must restart to change the server id");
396
397                 std::string casemapping = options->getString("casemapping");
398                 if (!casemapping.empty() && casemapping != CaseMapping)
399                         throw CoreException("You must restart to change the server casemapping");
400
401         }
402         SoftLimit = ConfValue("performance")->getUInt("softlimit", (SocketEngine::GetMaxFds() > 0 ? SocketEngine::GetMaxFds() : LONG_MAX), 10);
403         CCOnConnect = ConfValue("performance")->getBool("clonesonconnect", true);
404         MaxConn = ConfValue("performance")->getUInt("somaxconn", SOMAXCONN);
405         XLineMessage = options->getString("xlinemessage", options->getString("moronbanner", "You're banned!"));
406         ServerDesc = server->getString("description", "Configure Me");
407         Network = server->getString("network", "Network");
408         NetBufferSize = ConfValue("performance")->getInt("netbuffersize", 10240, 1024, 65534);
409         DisabledDontExist = ConfValue("disabled")->getBool("fakenonexistant");
410         UserStats = security->getString("userstats");
411         CustomVersion = security->getString("customversion");
412         HideBans = security->getBool("hidebans");
413         HideServer = security->getString("hideserver", security->getString("hidewhois"));
414         SyntaxHints = options->getBool("syntaxhints");
415         FullHostInTopic = options->getBool("hostintopic");
416         MaxTargets = security->getUInt("maxtargets", 20, 1, 31);
417         DefaultModes = options->getString("defaultmodes", "not");
418         PID = ConfValue("pid")->getString("file");
419         MaxChans = ConfValue("channels")->getUInt("users", 20);
420         OperMaxChans = ConfValue("channels")->getUInt("opers", 0);
421         c_ipv4_range = ConfValue("cidr")->getUInt("ipv4clone", 32, 1, 32);
422         c_ipv6_range = ConfValue("cidr")->getUInt("ipv6clone", 128, 1, 128);
423         Limits = ServerLimits(ConfValue("limits"));
424         Paths = ServerPaths(ConfValue("path"));
425         NoSnoticeStack = options->getBool("nosnoticestack", false);
426
427         std::string defbind = options->getString("defaultbind");
428         if (stdalgo::string::equalsci(defbind, "ipv4"))
429         {
430                 WildcardIPv6 = false;
431         }
432         else if (stdalgo::string::equalsci(defbind, "ipv6"))
433         {
434                 WildcardIPv6 = true;
435         }
436         else
437         {
438                 WildcardIPv6 = true;
439                 int socktest = socket(AF_INET6, SOCK_STREAM, 0);
440                 if (socktest < 0)
441                         WildcardIPv6 = false;
442                 else
443                         SocketEngine::Close(socktest);
444         }
445
446         ServerInstance->XLines->ClearConfigLines();
447         ReadXLine(this, "badip", "ipmask", ServerInstance->XLines->GetFactory("Z"));
448         ReadXLine(this, "badnick", "nick", ServerInstance->XLines->GetFactory("Q"));
449         ReadXLine(this, "badhost", "host", ServerInstance->XLines->GetFactory("K"));
450         ReadXLine(this, "exception", "host", ServerInstance->XLines->GetFactory("E"));
451
452         const std::string restrictbannedusers = options->getString("restrictbannedusers", "yes");
453         if (stdalgo::string::equalsci(restrictbannedusers, "no"))
454                 RestrictBannedUsers = ServerConfig::BUT_NORMAL;
455         else if (stdalgo::string::equalsci(restrictbannedusers, "silent"))
456                 RestrictBannedUsers = ServerConfig::BUT_RESTRICT_SILENT;
457         else if (stdalgo::string::equalsci(restrictbannedusers, "yes"))
458                 RestrictBannedUsers =  ServerConfig::BUT_RESTRICT_NOTIFY;
459         else
460                 throw CoreException(restrictbannedusers + " is an invalid <options:restrictbannedusers> value, at " + options->getTagLocation());
461
462         DisabledUModes.reset();
463         std::string modes = ConfValue("disabled")->getString("usermodes");
464         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
465         {
466                 // Complain when the character is not a valid mode character.
467                 if (!ModeParser::IsModeChar(*p))
468                         throw CoreException("Invalid usermode " + std::string(1, *p) + " was found.");
469                 DisabledUModes.set(*p - 'A');
470         }
471
472         DisabledCModes.reset();
473         modes = ConfValue("disabled")->getString("chanmodes");
474         for (std::string::const_iterator p = modes.begin(); p != modes.end(); ++p)
475         {
476                 if (!ModeParser::IsModeChar(*p))
477                         throw CoreException("Invalid chanmode " + std::string(1, *p) + " was found.");
478                 DisabledCModes.set(*p - 'A');
479         }
480 }
481
482 // WARNING: it is not safe to use most of the codebase in this function, as it
483 // will run in the config reader thread
484 void ServerConfig::Read()
485 {
486         /* Load and parse the config file, if there are any errors then explode */
487
488         ParseStack stack(this);
489         try
490         {
491                 valid = stack.ParseFile(ServerInstance->ConfigFileName, 0);
492         }
493         catch (CoreException& err)
494         {
495                 valid = false;
496                 errstr << err.GetReason() << std::endl;
497         }
498 }
499
500 void ServerConfig::Apply(ServerConfig* old, const std::string &useruid)
501 {
502         valid = true;
503         if (old)
504         {
505                 /*
506                  * These values can only be set on boot. Keep their old values. Do it before we send messages so we actually have a servername.
507                  */
508                 this->CaseMapping = old->CaseMapping;
509                 this->ServerName = old->ServerName;
510                 this->sid = old->sid;
511                 this->cmdline = old->cmdline;
512         }
513
514         /* The stuff in here may throw CoreException, be sure we're in a position to catch it. */
515         try
516         {
517                 for (unsigned long index = 0; index * sizeof(DeprecatedConfig) < sizeof(ChangedConfig); index++)
518                 {
519                         std::string value;
520                         ConfigTagList tags = ConfTags(ChangedConfig[index].tag);
521                         for(ConfigIter i = tags.first; i != tags.second; ++i)
522                         {
523                                 if (i->second->readString(ChangedConfig[index].key, value, true)
524                                         && (ChangedConfig[index].value.empty() || value == ChangedConfig[index].value))
525                                 {
526                                         errstr << "Your configuration contains a deprecated value: <"  << ChangedConfig[index].tag;
527                                         if (ChangedConfig[index].value.empty())
528                                         {
529                                                 errstr << ':' << ChangedConfig[index].key;
530                                         }
531                                         else
532                                         {
533                                                 errstr << ' ' << ChangedConfig[index].key << "=\"" << ChangedConfig[index].value << "\"";
534                                         }
535                                         errstr << "> - " << ChangedConfig[index].reason << " (at " << i->second->getTagLocation() << ")" << std::endl;
536                                 }
537                         }
538                 }
539
540                 Fill();
541
542                 // Handle special items
543                 CrossCheckOperClassType();
544                 CrossCheckConnectBlocks(old);
545         }
546         catch (CoreException &ce)
547         {
548                 errstr << ce.GetReason() << std::endl;
549         }
550
551         // Check errors before dealing with failed binds, since continuing on failed bind is wanted in some circumstances.
552         valid = errstr.str().empty();
553
554         // write once here, to try it out and make sure its ok
555         if (valid)
556                 ServerInstance->WritePID(this->PID, !old);
557
558         ConfigTagList binds = ConfTags("bind");
559         if (binds.first == binds.second)
560                  errstr << "Possible configuration error: you have not defined any <bind> blocks." << std::endl
561                          << "You will need to do this if you want clients to be able to connect!" << std::endl;
562
563         if (old && valid)
564         {
565                 // On first run, ports are bound later on
566                 FailedPortList pl;
567                 ServerInstance->BindPorts(pl);
568                 if (pl.size())
569                 {
570                         errstr << "Not all your client ports could be bound." << std::endl
571                                 << "The following port(s) failed to bind:" << std::endl;
572
573                         int j = 1;
574                         for (FailedPortList::iterator i = pl.begin(); i != pl.end(); i++, j++)
575                         {
576                                 errstr << j << ".\tAddress: " << i->first.str() << "\tReason: " << strerror(i->second) << std::endl;
577                         }
578                 }
579         }
580
581         User* user = useruid.empty() ? NULL : ServerInstance->FindNick(useruid);
582
583         if (!valid)
584         {
585                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "There were errors in your configuration file:");
586                 Classes.clear();
587         }
588
589         while (errstr.good())
590         {
591                 std::string line;
592                 getline(errstr, line, '\n');
593                 if (line.empty())
594                         continue;
595                 // On startup, print out to console (still attached at this point)
596                 if (!old)
597                         std::cout << line << std::endl;
598                 // If a user is rehashing, tell them directly
599                 if (user)
600                         user->WriteRemoteNotice(InspIRCd::Format("*** %s", line.c_str()));
601                 // Also tell opers
602                 ServerInstance->SNO->WriteGlobalSno('a', line);
603         }
604
605         errstr.clear();
606         errstr.str(std::string());
607
608         // Re-parse our MOTD and RULES files for colors -- Justasic
609         for (ClassVector::const_iterator it = this->Classes.begin(), it_end = this->Classes.end(); it != it_end; ++it)
610         {
611                 ConfigTag *tag = (*it)->config;
612
613                 ConfigFileCache::iterator file = this->Files.find(tag->getString("motd", "motd"));
614                 if (file != this->Files.end())
615                         InspIRCd::ProcessColors(file->second);
616         }
617
618         /* No old configuration -> initial boot, nothing more to do here */
619         if (!old)
620         {
621                 if (!valid)
622                 {
623                         ServerInstance->Exit(EXIT_STATUS_CONFIG);
624                 }
625
626                 return;
627         }
628
629
630         // If there were errors processing configuration, don't touch modules.
631         if (!valid)
632                 return;
633
634         ApplyModules(user);
635
636         if (user)
637                 user->WriteRemoteNotice("*** Successfully rehashed server.");
638         ServerInstance->SNO->WriteGlobalSno('a', "*** Successfully rehashed server.");
639 }
640
641 void ServerConfig::ApplyModules(User* user)
642 {
643         std::vector<std::string> added_modules;
644         ModuleManager::ModuleMap removed_modules = ServerInstance->Modules->GetModules();
645
646         ConfigTagList tags = ConfTags("module");
647         for(ConfigIter i = tags.first; i != tags.second; ++i)
648         {
649                 ConfigTag* tag = i->second;
650                 std::string name;
651                 if (tag->readString("name", name))
652                 {
653                         name = ModuleManager::ExpandModName(name);
654                         // if this module is already loaded, the erase will succeed, so we need do nothing
655                         // otherwise, we need to add the module (which will be done later)
656                         if (removed_modules.erase(name) == 0)
657                                 added_modules.push_back(name);
658                 }
659         }
660
661         for (ModuleManager::ModuleMap::iterator i = removed_modules.begin(); i != removed_modules.end(); ++i)
662         {
663                 const std::string& modname = i->first;
664                 // Don't remove core_*.so, just remove m_*.so
665                 if (InspIRCd::Match(modname, "core_*.so", ascii_case_insensitive_map))
666                         continue;
667                 if (ServerInstance->Modules->Unload(i->second))
668                 {
669                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH UNLOADED MODULE: %s", modname.c_str());
670
671                         if (user)
672                                 user->WriteNumeric(RPL_UNLOADEDMODULE, modname, InspIRCd::Format("Module %s successfully unloaded.", modname.c_str()));
673                         else
674                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully unloaded.", modname.c_str());
675                 }
676                 else
677                 {
678                         if (user)
679                                 user->WriteNumeric(ERR_CANTUNLOADMODULE, modname, InspIRCd::Format("Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str()));
680                         else
681                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to unload module %s: %s", modname.c_str(), ServerInstance->Modules->LastError().c_str());
682                 }
683         }
684
685         for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
686         {
687                 // Skip modules which are already loaded.
688                 if (ServerInstance->Modules->Find(*adding))
689                         continue;
690
691                 if (ServerInstance->Modules->Load(*adding))
692                 {
693                         ServerInstance->SNO->WriteGlobalSno('a', "*** REHASH LOADED MODULE: %s",adding->c_str());
694                         if (user)
695                                 user->WriteNumeric(RPL_LOADEDMODULE, *adding, InspIRCd::Format("Module %s successfully loaded.", adding->c_str()));
696                         else
697                                 ServerInstance->SNO->WriteGlobalSno('a', "Module %s successfully loaded.", adding->c_str());
698                 }
699                 else
700                 {
701                         if (user)
702                                 user->WriteNumeric(ERR_CANTLOADMODULE, *adding, InspIRCd::Format("Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str()));
703                         else
704                                 ServerInstance->SNO->WriteGlobalSno('a', "Failed to load module %s: %s", adding->c_str(), ServerInstance->Modules->LastError().c_str());
705                 }
706         }
707 }
708
709 ConfigTag* ServerConfig::ConfValue(const std::string &tag)
710 {
711         ConfigTagList found = config_data.equal_range(tag);
712         if (found.first == found.second)
713                 return EmptyTag;
714         ConfigTag* rv = found.first->second;
715         found.first++;
716         if (found.first != found.second)
717                 ServerInstance->Logs->Log("CONFIG", LOG_DEFAULT, "Multiple <" + tag + "> tags found; only first will be used "
718                         "(first at " + rv->getTagLocation() + "; second at " + found.first->second->getTagLocation() + ")");
719         return rv;
720 }
721
722 ConfigTagList ServerConfig::ConfTags(const std::string& tag)
723 {
724         return config_data.equal_range(tag);
725 }
726
727 std::string ServerConfig::Escape(const std::string& str, bool xml)
728 {
729         std::string escaped;
730         for (std::string::const_iterator it = str.begin(); it != str.end(); ++it)
731         {
732                 switch (*it)
733                 {
734                         case '"':
735                                 escaped += xml ? "&quot;" : "\"";
736                                 break;
737                         case '&':
738                                 escaped += xml ? "&amp;" : "&";
739                                 break;
740                         case '\\':
741                                 escaped += xml ? "\\" : "\\\\";
742                                 break;
743                         default:
744                                 escaped += *it;
745                                 break;
746                 }
747         }
748         return escaped;
749 }
750
751 void ConfigReaderThread::Run()
752 {
753         Config->Read();
754         done = true;
755 }
756
757 void ConfigReaderThread::Finish()
758 {
759         ServerConfig* old = ServerInstance->Config;
760         ServerInstance->Logs->Log("CONFIG", LOG_DEBUG, "Switching to new configuration...");
761         ServerInstance->Config = this->Config;
762         Config->Apply(old, TheUserUID);
763
764         if (Config->valid)
765         {
766                 /*
767                  * Apply the changed configuration from the rehash.
768                  *
769                  * XXX: The order of these is IMPORTANT, do not reorder them without testing
770                  * thoroughly!!!
771                  */
772                 ServerInstance->Users.RehashCloneCounts();
773                 ServerInstance->XLines->CheckELines();
774                 ServerInstance->XLines->ApplyLines();
775                 Config->ApplyDisabledCommands();
776                 User* user = ServerInstance->FindNick(TheUserUID);
777
778                 ConfigStatus status(user);
779                 const ModuleManager::ModuleMap& mods = ServerInstance->Modules->GetModules();
780                 for (ModuleManager::ModuleMap::const_iterator i = mods.begin(); i != mods.end(); ++i)
781                 {
782                         try
783                         {
784                                 ServerInstance->Logs->Log("MODULE", LOG_DEBUG, "Rehashing " + i->first);
785                                 i->second->ReadConfig(status);
786                         }
787                         catch (CoreException& modex)
788                         {
789                                 ServerInstance->Logs->Log("MODULE", LOG_DEFAULT, "Exception caught: " + modex.GetReason());
790                                 if (user)
791                                         user->WriteNotice(i->first + ": " + modex.GetReason());
792                         }
793                 }
794
795                 // The description of this server may have changed - update it for WHOIS etc.
796                 ServerInstance->FakeClient->server->description = Config->ServerDesc;
797
798                 ServerInstance->ISupport.Build();
799
800                 ServerInstance->Logs->CloseLogs();
801                 ServerInstance->Logs->OpenFileLogs();
802
803                 if (Config->RawLog && !old->RawLog)
804                         ServerInstance->Users->ServerNoticeAll("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded.");
805
806                 Config = old;
807         }
808         else
809         {
810                 // whoops, abort!
811                 ServerInstance->Config = old;
812         }
813 }