1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
17 #include "inspircd_config.h"
19 #include "configreader.h"
22 #include <sys/errno.h>
23 #include <sys/ioctl.h>
24 #include <sys/utsname.h>
39 #include "inspstring.h"
40 #include "helperfuncs.h"
42 #include "socketengine.h"
43 #include "userprocess.h"
47 #include "command_parse.h"
50 #define nspace __gnu_cxx
52 extern InspIRCd* ServerInstance;
54 extern std::vector<Module*> modules;
55 extern std::vector<ircd_module*> factory;
56 extern std::vector<InspSocket*> module_sockets;
57 extern std::vector<userrec*> local_users;
60 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
63 // This table references users by file descriptor.
64 // its an array to make it VERY fast, as all lookups are referenced
65 // by an integer, meaning there is no need for a scan/search operation.
66 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
68 extern Server* MyServer;
69 extern ServerConfig *Config;
71 extern user_hash clientlist;
72 extern chan_hash chanlist;
74 /* Special commands which may occur without registration of the user */
75 cmd_user* command_user;
76 cmd_nick* command_nick;
77 cmd_pass* command_pass;
80 /* LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list.
81 * There are two overriden versions of this method, one of which takes two potential lists and the other takes one.
82 * We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once,
83 * the channel names and their keys as follows:
84 * JOIN #chan1,#chan2,#chan3 key1,,key3
85 * Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating
86 * two instances of irc::commasepstream and reading them both together until the first runs out of tokens.
87 * The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc.
88 * Both will only parse until they reach Config->MaxTargets number of targets, to stop abuse via spam.
90 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra)
92 /* First check if we have more than one item in the list, if we don't we return zero here and the handler
93 * which called us just carries on as it was.
95 if (!strchr(parameters[splithere],','))
98 /* Create two lists, one for channel names, one for keys
100 irc::commasepstream items1(parameters[splithere]);
101 irc::commasepstream items2(parameters[extra]);
102 std::string item = "";
103 unsigned int max = 0;
105 /* Attempt to iterate these lists and call the command objech
106 * which called us, for every parameter pair until there are
107 * no more left to parse.
109 while (((item = items1.GetToken()) != "") && (max++ < Config->MaxTargets))
111 std::string extrastuff = items2.GetToken();
112 parameters[splithere] = item.c_str();
113 parameters[extra] = extrastuff.c_str();
114 CommandObj->Handle(parameters,pcnt,user);
119 int CommandParser::LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere)
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 /* Only one commasepstream here */
128 irc::commasepstream items1(parameters[splithere]);
129 std::string item = "";
130 unsigned int max = 0;
132 /* Parse the commasepstream until there are no tokens remaining.
133 * Each token we parse out, call the command handler that called us
136 while (((item = items1.GetToken()) != "") && (max++ < Config->MaxTargets))
138 parameters[splithere] = item.c_str();
139 CommandObj->Handle(parameters,pcnt,user);
141 /* By returning 1 we tell our caller that nothing is to be done,
142 * as all the previous calls handled the data. This makes the parent
143 * return without doing any processing.
148 bool CommandParser::IsValidCommand(const std::string &commandname, int pcnt, userrec * user)
150 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
152 if (n != cmdlist.end())
154 if ((pcnt>=n->second->min_params) && (n->second->source != "<core>"))
156 if ((!n->second->flags_needed) || (user->modes[n->second->flags_needed-65]))
158 if (n->second->flags_needed)
160 return ((user->HasPermission(commandname)) || (is_uline(user->server)));
169 // calls a handler function for a command
171 bool CommandParser::CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user)
173 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
175 if (n != cmdlist.end())
177 if (pcnt >= n->second->min_params)
179 if ((!n->second->flags_needed) || (user->modes[n->second->flags_needed-65]))
181 if (n->second->flags_needed)
183 if ((user->HasPermission(commandname)) || (!IS_LOCAL(user)))
185 n->second->Handle(parameters,pcnt,user);
191 n->second->Handle(parameters,pcnt,user);
200 void CommandParser::ProcessCommand(userrec *user, std::string &cmd)
202 const char *command_p[127];
204 std::string para[127];
205 irc::tokenstream tokens(cmd);
206 std::string command = tokens.GetToken();
208 while (((para[items] = tokens.GetToken()) != "") && (items < 127))
209 command_p[items] = para[items++].c_str();
211 std::transform(command.begin(), command.end(), command.begin(), ::toupper);
214 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false));
215 if (MOD_RESULT == 1) {
219 nspace::hash_map<std::string,command_t*>::iterator cm = cmdlist.find(command);
221 if (cm != cmdlist.end())
225 /* activity resets the ping pending timer */
226 user->nping = TIME + user->pingmax;
227 if (cm->second->flags_needed)
229 if (!user->IsModeSet(cm->second->flags_needed))
231 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
234 if (!user->HasPermission(command))
236 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command.c_str());
240 if ((user->registered == REG_ALL) && (!*user->oper) && (cm->second->IsDisabled()))
242 /* command is disabled! */
243 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command.c_str());
246 if (items < cm->second->min_params)
248 WriteServ(user->fd,"461 %s %s :Not enough parameters.", user->nick, command.c_str());
249 /* If syntax is given, display this as the 461 reply */
250 if ((Config->SyntaxHints) && (cm->second->syntax.length()))
251 WriteServ(user->fd,"304 %s :SYNTAX %s %s", user->nick, cm->second->command.c_str(), cm->second->syntax.c_str());
254 if ((user->registered == REG_ALL) || (cm->second == command_user) || (cm->second == command_nick) || (cm->second == command_pass))
256 /* ikky /stats counters */
257 cm->second->use_count++;
258 cm->second->total_bytes += cmd.length();
261 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true));
266 * WARNING: nothing may come after the
267 * command handler call, as the handler
268 * may free the user structure!
271 cm->second->Handle(command_p,items,user);
276 WriteServ(user->fd,"451 %s :You have not registered",command.c_str());
283 ServerInstance->stats->statsUnknown++;
284 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command.c_str());
288 bool CommandParser::RemoveCommands(const char* source)
290 bool go_again = true;
296 for (nspace::hash_map<std::string,command_t*>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
298 command_t* x = i->second;
299 if (x->source == std::string(source))
301 log(DEBUG,"removecommands(%s) Removing dependent command: %s",x->source.c_str(),x->command.c_str());
312 void CommandParser::ProcessBuffer(std::string &buffer,userrec *user)
314 std::string::size_type a;
319 while ((a = buffer.find("\n")) != std::string::npos)
321 while ((a = buffer.find("\r")) != std::string::npos)
326 log(DEBUG,"CMDIN: %s %s",user->nick,buffer.c_str());
327 this->ProcessCommand(user,buffer);
331 bool CommandParser::CreateCommand(command_t *f)
333 /* create the command and push it onto the table */
334 if (cmdlist.find(f->command) == cmdlist.end())
336 cmdlist[f->command] = f;
337 log(DEBUG,"Added command %s (%lu parameters)",f->command.c_str(),(unsigned long)f->min_params);
343 CommandParser::CommandParser()
345 this->SetupCommandTable();
348 void CommandParser::SetupCommandTable()
350 /* These three are special (can occur without
351 * full user registration) and so are saved
354 command_user = new cmd_user;
355 command_nick = new cmd_nick;
356 command_pass = new cmd_pass;
357 this->CreateCommand(command_user);
358 this->CreateCommand(command_nick);
359 this->CreateCommand(command_pass);
361 /* The rest of these arent special. boo hoo.
363 this->CreateCommand(new cmd_quit);
364 this->CreateCommand(new cmd_version);
365 this->CreateCommand(new cmd_ping);
366 this->CreateCommand(new cmd_pong);
367 this->CreateCommand(new cmd_admin);
368 this->CreateCommand(new cmd_privmsg);
369 this->CreateCommand(new cmd_info);
370 this->CreateCommand(new cmd_time);
371 this->CreateCommand(new cmd_whois);
372 this->CreateCommand(new cmd_wallops);
373 this->CreateCommand(new cmd_notice);
374 this->CreateCommand(new cmd_join);
375 this->CreateCommand(new cmd_names);
376 this->CreateCommand(new cmd_part);
377 this->CreateCommand(new cmd_kick);
378 this->CreateCommand(new cmd_mode);
379 this->CreateCommand(new cmd_topic);
380 this->CreateCommand(new cmd_who);
381 this->CreateCommand(new cmd_motd);
382 this->CreateCommand(new cmd_rules);
383 this->CreateCommand(new cmd_oper);
384 this->CreateCommand(new cmd_list);
385 this->CreateCommand(new cmd_die);
386 this->CreateCommand(new cmd_restart);
387 this->CreateCommand(new cmd_kill);
388 this->CreateCommand(new cmd_rehash);
389 this->CreateCommand(new cmd_lusers);
390 this->CreateCommand(new cmd_stats);
391 this->CreateCommand(new cmd_userhost);
392 this->CreateCommand(new cmd_away);
393 this->CreateCommand(new cmd_ison);
394 this->CreateCommand(new cmd_summon);
395 this->CreateCommand(new cmd_users);
396 this->CreateCommand(new cmd_invite);
397 this->CreateCommand(new cmd_trace);
398 this->CreateCommand(new cmd_whowas);
399 this->CreateCommand(new cmd_connect);
400 this->CreateCommand(new cmd_squit);
401 this->CreateCommand(new cmd_modules);
402 this->CreateCommand(new cmd_links);
403 this->CreateCommand(new cmd_map);
404 this->CreateCommand(new cmd_kline);
405 this->CreateCommand(new cmd_gline);
406 this->CreateCommand(new cmd_zline);
407 this->CreateCommand(new cmd_qline);
408 this->CreateCommand(new cmd_eline);
409 this->CreateCommand(new cmd_loadmodule);
410 this->CreateCommand(new cmd_unloadmodule);
411 this->CreateCommand(new cmd_server);
412 this->CreateCommand(new cmd_commands);