1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
17 #include "socketengine.h"
19 #include "command_parse.h"
20 #include "exitcodes.h"
22 /* Directory Searching for Unix-Only */
28 bool InspIRCd::ULine(const char* server)
35 return (Config->ulines.find(server) != Config->ulines.end());
38 bool InspIRCd::SilentULine(const char* server)
40 std::map<irc::string,bool>::iterator n = Config->ulines.find(server);
41 if (n != Config->ulines.end())
46 int InspIRCd::OperPassCompare(const char* data,const char* input, int tagnumber)
49 FOREACH_RESULT_I(this,I_OnOperCompare,OnOperCompare(data, input, tagnumber))
54 return strcmp(data,input);
57 std::string InspIRCd::TimeString(time_t curtime)
59 return std::string(ctime(&curtime),24);
62 /** Refactored by Brain, Jun 2007. Much faster with some clever O(1) array
63 * lookups and pointer maths.
65 long InspIRCd::Duration(const std::string &str)
67 unsigned char multiplier = 0;
72 /* Iterate each item in the string, looking for number or multiplier */
73 for (std::string::const_reverse_iterator i = str.rbegin(); i != str.rend(); ++i)
75 /* Found a number, queue it onto the current number */
76 if ((*i >= '0') && (*i <= '9'))
78 subtotal = subtotal + ((*i - '0') * times);
83 /* Found something thats not a number, find out how much
84 * it multiplies the built up number by, multiply the total
85 * and reset the built up number.
88 total += subtotal * duration_multi[multiplier];
90 /* Next subtotal please */
98 total += subtotal * duration_multi[multiplier];
101 /* Any trailing values built up are treated as raw seconds */
102 return total + subtotal;
105 /* LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list.
106 * There are two overriden versions of this method, one of which takes two potential lists and the other takes one.
107 * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once,
108 * the channel names and their keys as follows:
109 * JOIN #chan1,#chan2,#chan3 key1,,key3
110 * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating
111 * two instances of irc::commasepstream and reading them both together until the first runs out of tokens.
112 * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc.
113 * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam.
115 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra)
117 /* First check if we have more than one item in the list, if we don't we return zero here and the handler
118 * which called us just carries on as it was.
120 if (!strchr(parameters[splithere],','))
123 /** Some lame ircds will weed out dupes using some shitty O(n^2) algorithm.
124 * By using std::map (thanks for the idea w00t) we can cut this down a ton.
127 std::map<irc::string, bool> dupes;
129 /* Create two lists, one for channel names, one for keys
131 irc::commasepstream items1(parameters[splithere]);
132 irc::commasepstream items2(parameters[extra]);
133 std::string extrastuff;
135 unsigned int max = 0;
137 /* Attempt to iterate these lists and call the command objech
138 * which called us, for every parameter pair until there are
139 * no more left to parse.
141 while (items1.GetToken(item) && (max++ < ServerInstance->Config->MaxTargets))
143 if (dupes.find(item.c_str()) == dupes.end())
145 const char* new_parameters[MAXPARAMETERS];
147 for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++)
148 new_parameters[t] = parameters[t];
150 if (!items2.GetToken(extrastuff))
153 new_parameters[splithere] = item.c_str();
154 new_parameters[extra] = extrastuff.c_str();
156 CommandObj->Handle(new_parameters,pcnt,user);
158 dupes[item.c_str()] = true;
164 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere)
166 /* First check if we have more than one item in the list, if we don't we return zero here and the handler
167 * which called us just carries on as it was.
169 if (!strchr(parameters[splithere],','))
172 std::map<irc::string, bool> dupes;
174 /* Only one commasepstream here */
175 irc::commasepstream items1(parameters[splithere]);
177 unsigned int max = 0;
179 /* Parse the commasepstream until there are no tokens remaining.
180 * Each token we parse out, call the command handler that called us
183 while (items1.GetToken(item) && (max++ < ServerInstance->Config->MaxTargets))
185 if (dupes.find(item.c_str()) == dupes.end())
187 const char* new_parameters[MAXPARAMETERS];
189 for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++)
190 new_parameters[t] = parameters[t];
192 new_parameters[splithere] = item.c_str();
194 parameters[splithere] = item.c_str();
196 /* Execute the command handler over and over. If someone pulls our user
197 * record out from under us (e.g. if we /kill a comma sep list, and we're
198 * in that list ourselves) abort if we're gone.
200 CommandObj->Handle(new_parameters,pcnt,user);
202 dupes[item.c_str()] = true;
205 /* By returning 1 we tell our caller that nothing is to be done,
206 * as all the previous calls handled the data. This makes the parent
207 * return without doing any processing.
212 bool CommandParser::IsValidCommand(const std::string &commandname, int pcnt, userrec * user)
214 command_table::iterator n = cmdlist.find(commandname);
216 if (n != cmdlist.end())
218 if ((pcnt>=n->second->min_params) && (n->second->source != "<core>"))
220 if ((!n->second->flags_needed) || (user->IsModeSet(n->second->flags_needed)))
222 if (n->second->flags_needed)
224 return ((user->HasPermission(commandname)) || (ServerInstance->ULine(user->server)));
233 command_t* CommandParser::GetHandler(const std::string &commandname)
235 command_table::iterator n = cmdlist.find(commandname);
236 if (n != cmdlist.end())
242 // calls a handler function for a command
244 CmdResult CommandParser::CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user)
246 command_table::iterator n = cmdlist.find(commandname);
248 if (n != cmdlist.end())
250 if (pcnt >= n->second->min_params)
254 if (IS_LOCAL(user) && n->second->flags_needed)
256 /* if user is local, and flags are needed .. */
258 if (user->IsModeSet(n->second->flags_needed))
260 /* if user has the flags, and now has the permissions, go ahead */
261 if (user->HasPermission(commandname))
267 /* remote or no flags required anyway */
273 return n->second->Handle(parameters,pcnt,user);
280 void CommandParser::ProcessCommand(userrec *user, std::string &cmd)
282 const char *command_p[MAXPARAMETERS];
284 irc::tokenstream tokens(cmd);
286 tokens.GetToken(command);
288 /* A client sent a nick prefix on their command (ick)
289 * rhapsody and some braindead bouncers do this --
290 * the rfc says they shouldnt but also says the ircd should
291 * discard it if they do.
293 if (*command.c_str() == ':')
294 tokens.GetToken(command);
296 while (tokens.GetToken(para[items]) && (items < MAXPARAMETERS))
298 command_p[items] = para[items].c_str();
302 std::transform(command.begin(), command.end(), command.begin(), ::toupper);
305 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false,cmd));
306 if (MOD_RESULT == 1) {
310 command_table::iterator cm = cmdlist.find(command);
312 if (cm != cmdlist.end())
316 /* activity resets the ping pending timer */
317 user->nping = ServerInstance->Time() + user->pingmax;
318 if (cm->second->flags_needed)
320 if (!user->IsModeSet(cm->second->flags_needed))
322 user->WriteServ("481 %s :Permission Denied - You do not have the required operator privileges",user->nick);
325 if (!user->HasPermission(command))
327 user->WriteServ("481 %s :Permission Denied - Oper type %s does not have access to command %s",user->nick,user->oper,command.c_str());
331 if ((user->registered == REG_ALL) && (!IS_OPER(user)) && (cm->second->IsDisabled()))
333 /* command is disabled! */
334 user->WriteServ("421 %s %s :This command has been disabled.",user->nick,command.c_str());
335 ServerInstance->SNO->WriteToSnoMask('d', "%s denied for %s (%s@%s)",
336 command.c_str(), user->nick, user->ident, user->host);
339 if (items < cm->second->min_params)
341 user->WriteServ("461 %s %s :Not enough parameters.", user->nick, command.c_str());
342 if ((ServerInstance->Config->SyntaxHints) && (user->registered == REG_ALL) && (cm->second->syntax.length()))
343 user->WriteServ("304 %s :SYNTAX %s %s", user->nick, cm->second->command.c_str(), cm->second->syntax.c_str());
346 if ((user->registered == REG_ALL) || (cm->second->WorksBeforeReg()))
348 /* ikky /stats counters */
349 cm->second->use_count++;
350 cm->second->total_bytes += cmd.length();
353 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true,cmd));
358 * WARNING: nothing should come after this, as the user may be on a cull list to
359 * be nuked next loop iteration. be sensible.
361 CmdResult result = cm->second->Handle(command_p,items,user);
363 FOREACH_MOD(I_OnPostCommand,OnPostCommand(command, command_p, items, user, result,cmd));
368 user->WriteServ("451 %s :You have not registered",command.c_str());
375 ServerInstance->stats->statsUnknown++;
376 user->WriteServ("421 %s %s :Unknown command",user->nick,command.c_str());
380 bool CommandParser::RemoveCommands(const char* source)
382 command_table::iterator i,safei;
383 for (i = cmdlist.begin(); i != cmdlist.end(); i++)
387 if (safei != cmdlist.end())
389 RemoveCommand(safei, source);
392 safei = cmdlist.begin();
393 if (safei != cmdlist.end())
395 RemoveCommand(safei, source);
400 void CommandParser::RemoveCommand(command_table::iterator safei, const char* source)
402 command_t* x = safei->second;
403 if (x->source == std::string(source))
405 cmdlist.erase(safei);
410 void CommandParser::ProcessBuffer(std::string &buffer,userrec *user)
412 std::string::size_type a;
417 while ((a = buffer.rfind("\n")) != std::string::npos)
419 while ((a = buffer.rfind("\r")) != std::string::npos)
426 ServerInstance->Log(DEBUG,"C[%d] -> :%s %s",user->GetFd(), user->nick, buffer.c_str());
427 this->ProcessCommand(user,buffer);
432 bool CommandParser::CreateCommand(command_t *f, void* so_handle)
436 if (RFCCommands.find(f->command) == RFCCommands.end())
437 RFCCommands[f->command] = so_handle;
440 ServerInstance->Log(DEFAULT,"ERK! Somehow, we loaded a cmd_*.so file twice! Only the first instance is being recorded.");
445 /* create the command and push it onto the table */
446 if (cmdlist.find(f->command) == cmdlist.end())
448 cmdlist[f->command] = f;
454 CommandParser::CommandParser(InspIRCd* Instance) : ServerInstance(Instance)
459 bool CommandParser::FindSym(void** v, void* h)
461 *v = dlsym(h, "init_command");
462 const char* err = dlerror();
465 ServerInstance->Log(SPARSE, "Error loading core command: %s\n", err);
471 bool CommandParser::ReloadCommand(const char* cmd, userrec* user)
473 char filename[MAXBUF];
474 char commandname[MAXBUF];
477 for (const char* x = cmd; *x; x++, y++)
478 commandname[y] = toupper(*x);
482 SharedObjectList::iterator command = RFCCommands.find(commandname);
484 if (command != RFCCommands.end())
486 command_t* cmdptr = cmdlist.find(commandname)->second;
487 cmdlist.erase(cmdlist.find(commandname));
489 for (char* x = commandname; *x; x++)
494 dlclose(command->second);
495 RFCCommands.erase(command);
497 snprintf(filename, MAXBUF, "cmd_%s.so", commandname);
498 const char* err = this->LoadCommand(filename);
502 user->WriteServ("NOTICE %s :*** Error loading 'cmd_%s.so': %s", user->nick, cmd, err);
512 CmdResult cmd_reload::Handle(const char** parameters, int pcnt, userrec *user)
514 user->WriteServ("NOTICE %s :*** Reloading command '%s'",user->nick, parameters[0]);
515 if (ServerInstance->Parser->ReloadCommand(parameters[0], user))
517 user->WriteServ("NOTICE %s :*** Successfully reloaded command '%s'", user->nick, parameters[0]);
518 ServerInstance->WriteOpers("*** RELOAD: %s reloaded the '%s' command.", user->nick, parameters[0]);
523 user->WriteServ("NOTICE %s :*** Could not reload command '%s' -- fix this problem, then /REHASH as soon as possible!", user->nick, parameters[0]);
528 const char* CommandParser::LoadCommand(const char* name)
530 char filename[MAXBUF];
532 command_t* (*cmd_factory_func)(InspIRCd*);
534 /* Command already exists? Succeed silently - this is needed for REHASH */
535 if (RFCCommands.find(name) != RFCCommands.end())
537 ServerInstance->Log(DEBUG,"Not reloading command %s/%s, it already exists", LIBRARYDIR, name);
541 snprintf(filename, MAXBUF, "%s/%s", LIBRARYDIR, name);
542 h = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
546 const char* n = dlerror();
547 ServerInstance->Log(SPARSE, "Error loading core command: %s", n);
551 if (this->FindSym((void **)&cmd_factory_func, h))
553 command_t* newcommand = cmd_factory_func(ServerInstance);
554 this->CreateCommand(newcommand, h);
559 void CommandParser::SetupCommandTable(userrec* user)
565 printf("\nLoading core commands");
569 DIR* library = opendir(LIBRARYDIR);
572 dirent* entry = NULL;
573 while ((entry = readdir(library)))
575 if (match(entry->d_name, "cmd_*.so"))
582 const char* err = this->LoadCommand(entry->d_name);
587 user->WriteServ("NOTICE %s :*** Failed to load core command %s: %s", user->nick, entry->d_name, err);
591 printf("Error loading %s: %s", entry->d_name, err);
592 exit(EXIT_STATUS_BADHANDLER);
602 if (cmdlist.find("RELOAD") == cmdlist.end())
603 this->CreateCommand(new cmd_reload(ServerInstance));
606 int CommandParser::TranslateUIDs(TranslateType to, const std::string &source, std::string &dest)
608 userrec* user = NULL;
610 int translations = 0;
615 /* Translate single nickname */
616 ServerInstance->Log(DEBUG,"TR_NICK");
617 user = ServerInstance->FindNick(source);
620 ServerInstance->Log(DEBUG,"Managed UUID");
626 ServerInstance->Log(DEBUG,"Had to use source.. (%s)", source.c_str());
632 /* Translate comma seperated list of nicknames */
633 irc::commasepstream items(source);
634 while (items.GetToken(item))
636 user = ServerInstance->FindNick(item);
639 dest.append(user->uuid);
647 dest.erase(dest.end() - 1);
650 case TR_SPACENICKLIST:
652 /* Translate space seperated list of nicknames */
653 irc::spacesepstream items(source);
654 while (items.GetToken(item))
656 user = ServerInstance->FindNick(item);
659 dest.append(user->uuid);
667 dest.erase(dest.end() - 1);