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 * ---------------------------------------------------
15 #include "configreader.h"
21 #include "socketengine.h"
23 #include "command_parse.h"
24 #include "exitcodes.h"
26 /* Directory Searching for Unix-Only */
32 bool InspIRCd::ULine(const char* server)
39 return (Config->ulines.find(server) != Config->ulines.end());
42 bool InspIRCd::SilentULine(const char* server)
44 std::map<irc::string,bool>::iterator n = Config->ulines.find(server);
45 if (n != Config->ulines.end())
50 int InspIRCd::OperPassCompare(const char* data,const char* input, int tagnumber)
53 FOREACH_RESULT_I(this,I_OnOperCompare,OnOperCompare(data, input, tagnumber))
58 return strcmp(data,input);
61 std::string InspIRCd::TimeString(time_t curtime)
63 return std::string(ctime(&curtime),24);
66 /** Refactored by Brain, Jun 2007. Much faster with some clever O(1) array
67 * lookups and pointer maths.
69 long InspIRCd::Duration(const std::string &str)
71 unsigned char multiplier = 0;
76 /* Iterate each item in the string, looking for number or multiplier */
77 for (std::string::const_reverse_iterator i = str.rbegin(); i != str.rend(); ++i)
79 /* Found a number, queue it onto the current number */
80 if ((*i >= '0') && (*i <= '9'))
82 subtotal = subtotal + ((*i - '0') * times);
87 /* Found something thats not a number, find out how much
88 * it multiplies the built up number by, multiply the total
89 * and reset the built up number.
92 total += subtotal * duration_multi[multiplier];
94 /* Next subtotal please */
102 total += subtotal * duration_multi[multiplier];
105 /* Any trailing values built up are treated as raw seconds */
106 return total + subtotal;
109 /* LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list.
110 * There are two overriden versions of this method, one of which takes two potential lists and the other takes one.
111 * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once,
112 * the channel names and their keys as follows:
113 * JOIN #chan1,#chan2,#chan3 key1,,key3
114 * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating
115 * two instances of irc::commasepstream and reading them both together until the first runs out of tokens.
116 * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc.
117 * Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam.
119 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra)
121 /* First check if we have more than one item in the list, if we don't we return zero here and the handler
122 * which called us just carries on as it was.
124 if (!strchr(parameters[splithere],','))
127 /** Some lame ircds will weed out dupes using some shitty O(n^2) algorithm.
128 * By using std::map (thanks for the idea w00t) we can cut this down a ton.
131 std::map<irc::string, bool> dupes;
133 /* Create two lists, one for channel names, one for keys
135 irc::commasepstream items1(parameters[splithere]);
136 irc::commasepstream items2(parameters[extra]);
137 std::string item("*");
138 unsigned int max = 0;
140 /* Attempt to iterate these lists and call the command objech
141 * which called us, for every parameter pair until there are
142 * no more left to parse.
144 while (((item = items1.GetToken()) != "") && (max++ < ServerInstance->Config->MaxTargets))
146 if (dupes.find(item.c_str()) == dupes.end())
148 const char* new_parameters[MAXPARAMETERS];
150 for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++)
151 new_parameters[t] = parameters[t];
153 std::string extrastuff = items2.GetToken();
155 new_parameters[splithere] = item.c_str();
156 new_parameters[extra] = extrastuff.c_str();
158 CommandObj->Handle(new_parameters,pcnt,user);
160 dupes[item.c_str()] = true;
166 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere)
168 /* First check if we have more than one item in the list, if we don't we return zero here and the handler
169 * which called us just carries on as it was.
171 if (!strchr(parameters[splithere],','))
174 std::map<irc::string, bool> dupes;
176 /* Only one commasepstream here */
177 irc::commasepstream items1(parameters[splithere]);
178 std::string item("*");
179 unsigned int max = 0;
181 /* Parse the commasepstream until there are no tokens remaining.
182 * Each token we parse out, call the command handler that called us
185 while (((item = items1.GetToken()) != "") && (max++ < ServerInstance->Config->MaxTargets))
187 if (dupes.find(item.c_str()) == dupes.end())
189 const char* new_parameters[MAXPARAMETERS];
191 for (int t = 0; (t < pcnt) && (t < MAXPARAMETERS); t++)
192 new_parameters[t] = parameters[t];
194 new_parameters[splithere] = item.c_str();
196 parameters[splithere] = item.c_str();
198 /* Execute the command handler over and over. If someone pulls our user
199 * record out from under us (e.g. if we /kill a comma sep list, and we're
200 * in that list ourselves) abort if we're gone.
202 CommandObj->Handle(new_parameters,pcnt,user);
204 dupes[item.c_str()] = true;
207 /* By returning 1 we tell our caller that nothing is to be done,
208 * as all the previous calls handled the data. This makes the parent
209 * return without doing any processing.
214 bool CommandParser::IsValidCommand(const std::string &commandname, int pcnt, userrec * user)
216 command_table::iterator n = cmdlist.find(commandname);
218 if (n != cmdlist.end())
220 if ((pcnt>=n->second->min_params) && (n->second->source != "<core>"))
222 if ((!n->second->flags_needed) || (user->IsModeSet(n->second->flags_needed)))
224 if (n->second->flags_needed)
226 return ((user->HasPermission(commandname)) || (ServerInstance->ULine(user->server)));
235 command_t* CommandParser::GetHandler(const std::string &commandname)
237 command_table::iterator n = cmdlist.find(commandname);
238 if (n != cmdlist.end())
244 // calls a handler function for a command
246 CmdResult CommandParser::CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user)
248 command_table::iterator n = cmdlist.find(commandname);
250 if (n != cmdlist.end())
252 if (pcnt >= n->second->min_params)
254 if ((!n->second->flags_needed) || (user->IsModeSet(n->second->flags_needed)))
256 if (n->second->flags_needed)
258 if ((user->HasPermission(commandname)) || (!IS_LOCAL(user)))
260 return n->second->Handle(parameters,pcnt,user);
265 return n->second->Handle(parameters,pcnt,user);
273 void CommandParser::ProcessCommand(userrec *user, std::string &cmd)
275 const char *command_p[MAXPARAMETERS];
277 irc::tokenstream tokens(cmd);
279 tokens.GetToken(command);
281 /* A client sent a nick prefix on their command (ick)
282 * rhapsody and some braindead bouncers do this --
283 * the rfc says they shouldnt but also says the ircd should
284 * discard it if they do.
286 if (*command.c_str() == ':')
287 tokens.GetToken(command);
289 while (tokens.GetToken(para[items]) && (items < MAXPARAMETERS))
291 command_p[items] = para[items].c_str();
295 std::transform(command.begin(), command.end(), command.begin(), ::toupper);
298 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false,cmd));
299 if (MOD_RESULT == 1) {
303 command_table::iterator cm = cmdlist.find(command);
305 if (cm != cmdlist.end())
309 /* activity resets the ping pending timer */
310 user->nping = ServerInstance->Time() + user->pingmax;
311 if (cm->second->flags_needed)
313 if (!user->IsModeSet(cm->second->flags_needed))
315 user->WriteServ("481 %s :Permission Denied - You do not have the required operator privileges",user->nick);
318 if (!user->HasPermission(command))
320 user->WriteServ("481 %s :Permission Denied - Oper type %s does not have access to command %s",user->nick,user->oper,command.c_str());
324 if ((user->registered == REG_ALL) && (!IS_OPER(user)) && (cm->second->IsDisabled()))
326 /* command is disabled! */
327 user->WriteServ("421 %s %s :This command has been disabled.",user->nick,command.c_str());
328 ServerInstance->SNO->WriteToSnoMask('d', "%s denied for %s (%s@%s)",
329 command.c_str(), user->nick, user->ident, user->host);
332 if (items < cm->second->min_params)
334 user->WriteServ("461 %s %s :Not enough parameters.", user->nick, command.c_str());
335 if ((ServerInstance->Config->SyntaxHints) && (user->registered == REG_ALL) && (cm->second->syntax.length()))
336 user->WriteServ("304 %s :SYNTAX %s %s", user->nick, cm->second->command.c_str(), cm->second->syntax.c_str());
339 if ((user->registered == REG_ALL) || (cm->second->WorksBeforeReg()))
341 /* ikky /stats counters */
342 cm->second->use_count++;
343 cm->second->total_bytes += cmd.length();
346 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true,cmd));
351 * WARNING: nothing should come after this, as the user may be on a cull list to
352 * be nuked next loop iteration. be sensible.
354 CmdResult result = cm->second->Handle(command_p,items,user);
356 FOREACH_MOD(I_OnPostCommand,OnPostCommand(command, command_p, items, user, result,cmd));
361 user->WriteServ("451 %s :You have not registered",command.c_str());
368 ServerInstance->stats->statsUnknown++;
369 user->WriteServ("421 %s %s :Unknown command",user->nick,command.c_str());
373 bool CommandParser::RemoveCommands(const char* source)
375 command_table::iterator i,safei;
376 for (i = cmdlist.begin(); i != cmdlist.end(); i++)
380 if (safei != cmdlist.end())
382 RemoveCommand(safei, source);
385 safei = cmdlist.begin();
386 if (safei != cmdlist.end())
388 RemoveCommand(safei, source);
393 void CommandParser::RemoveCommand(command_table::iterator safei, const char* source)
395 command_t* x = safei->second;
396 if (x->source == std::string(source))
398 cmdlist.erase(safei);
403 void CommandParser::ProcessBuffer(std::string &buffer,userrec *user)
405 std::string::size_type a;
410 while ((a = buffer.rfind("\n")) != std::string::npos)
412 while ((a = buffer.rfind("\r")) != std::string::npos)
419 ServerInstance->Log(DEBUG,"C[%d] -> :%s %s",user->GetFd(), user->nick, buffer.c_str());
420 this->ProcessCommand(user,buffer);
425 bool CommandParser::CreateCommand(command_t *f, void* so_handle)
429 if (RFCCommands.find(f->command) == RFCCommands.end())
430 RFCCommands[f->command] = so_handle;
433 ServerInstance->Log(DEFAULT,"ERK! Somehow, we loaded a cmd_*.so file twice! Only the first instance is being recorded.");
438 /* create the command and push it onto the table */
439 if (cmdlist.find(f->command) == cmdlist.end())
441 cmdlist[f->command] = f;
447 CommandParser::CommandParser(InspIRCd* Instance) : ServerInstance(Instance)
452 bool CommandParser::FindSym(void** v, void* h)
454 *v = dlsym(h, "init_command");
455 const char* err = dlerror();
458 ServerInstance->Log(SPARSE, "Error loading core command: %s\n", err);
464 bool CommandParser::ReloadCommand(const char* cmd, userrec* user)
466 char filename[MAXBUF];
467 char commandname[MAXBUF];
470 for (const char* x = cmd; *x; x++, y++)
471 commandname[y] = toupper(*x);
475 SharedObjectList::iterator command = RFCCommands.find(commandname);
477 if (command != RFCCommands.end())
479 command_t* cmdptr = cmdlist.find(commandname)->second;
480 cmdlist.erase(cmdlist.find(commandname));
482 for (char* x = commandname; *x; x++)
487 dlclose(command->second);
488 RFCCommands.erase(command);
490 snprintf(filename, MAXBUF, "cmd_%s.so", commandname);
491 const char* err = this->LoadCommand(filename);
495 user->WriteServ("NOTICE %s :*** Error loading 'cmd_%s.so': %s", user->nick, cmd, err);
505 CmdResult cmd_reload::Handle(const char** parameters, int pcnt, userrec *user)
507 user->WriteServ("NOTICE %s :*** Reloading command '%s'",user->nick, parameters[0]);
508 if (ServerInstance->Parser->ReloadCommand(parameters[0], user))
510 user->WriteServ("NOTICE %s :*** Successfully reloaded command '%s'", user->nick, parameters[0]);
511 ServerInstance->WriteOpers("*** RELOAD: %s reloaded the '%s' command.", user->nick, parameters[0]);
516 user->WriteServ("NOTICE %s :*** Could not reload command '%s' -- fix this problem, then /REHASH as soon as possible!", user->nick, parameters[0]);
521 const char* CommandParser::LoadCommand(const char* name)
523 char filename[MAXBUF];
525 command_t* (*cmd_factory_func)(InspIRCd*);
527 /* Command already exists? Succeed silently - this is needed for REHASH */
528 if (RFCCommands.find(name) != RFCCommands.end())
530 ServerInstance->Log(DEBUG,"Not reloading command %s/%s, it already exists", LIBRARYDIR, name);
534 snprintf(filename, MAXBUF, "%s/%s", LIBRARYDIR, name);
535 h = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
539 const char* n = dlerror();
540 ServerInstance->Log(SPARSE, "Error loading core command: %s", n);
544 if (this->FindSym((void **)&cmd_factory_func, h))
546 command_t* newcommand = cmd_factory_func(ServerInstance);
547 this->CreateCommand(newcommand, h);
552 void CommandParser::SetupCommandTable(userrec* user)
558 printf("\nLoading core commands");
562 DIR* library = opendir(LIBRARYDIR);
565 dirent* entry = NULL;
566 while ((entry = readdir(library)))
568 if (match(entry->d_name, "cmd_*.so"))
575 const char* err = this->LoadCommand(entry->d_name);
580 user->WriteServ("NOTICE %s :*** Failed to load core command %s: %s", user->nick, entry->d_name, err);
584 printf("Error loading %s: %s", entry->d_name, err);
585 exit(EXIT_STATUS_BADHANDLER);
595 if (cmdlist.find("RELOAD") == cmdlist.end())
596 this->CreateCommand(new cmd_reload(ServerInstance));