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 * ---------------------------------------------------
19 #include "inspircd_config.h"
21 #include "inspircd_io.h"
24 #include <sys/errno.h>
25 #include <sys/ioctl.h>
26 #include <sys/utsname.h>
30 #include <ext/hash_map>
51 #include "inspstring.h"
53 #include "helperfuncs.h"
55 #include "socketengine.h"
56 #include "userprocess.h"
60 #include "command_parse.h"
64 #define nspace __gnu_cxx
70 extern InspIRCd* ServerInstance;
72 extern std::vector<Module*> modules;
73 extern std::vector<ircd_module*> factory;
74 extern std::vector<InspSocket*> module_sockets;
75 extern std::vector<userrec*> local_users;
78 extern InspSocket* socket_ref[MAX_DESCRIPTORS];
81 // This table references users by file descriptor.
82 // its an array to make it VERY fast, as all lookups are referenced
83 // by an integer, meaning there is no need for a scan/search operation.
84 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
86 extern Server* MyServer;
87 extern ServerConfig *Config;
89 extern user_hash clientlist;
90 extern chan_hash chanlist;
92 /* This function pokes and hacks at a parameter list like the following:
94 * PART #winbot,#darkgalaxy :m00!
96 * to turn it into a series of individual calls like this:
99 * PART #darkgalaxy :m00!
101 * The seperate calls are sent to a callback function provided by the caller
102 * (the caller will usually call itself recursively). The callback function
103 * must be a command handler. Calling this function on a line with no list causes
104 * no action to be taken. You must provide a starting and ending parameter number
105 * where the range of the list can be found, useful if you have a terminating
106 * parameter as above which is actually not part of the list, or parameters
107 * before the actual list as well. This code is used by many functions which
108 * can function as "one to list" (see the RFC) */
110 int CommandParser::LoopCall(command_t* fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
112 /* Copy of the parameter list, because like strltok, we make a bit of
113 * a mess of the parameter string we're given, and we want to keep this
116 char paramlist[MAXBUF];
117 /* Temporary variable used to hold one split parameter
120 /* Parameter list, we can have up to 32 of these
123 /* Seperated items, e.g. holds the #one and #two from "#one,#two"
126 /* Seperated keys, holds the 'two' and 'three' of "two,three"
129 /* Misc. counters, the total values hold the total number of
130 * seperated items in sep_items (total) and the total number of
131 * seperated items in sep_keys (total2)
133 int j = 0, q = 0, total = 0, total2 = 0;
134 /* A temporary copy of the comma seperated key list (see the description
135 * of the paramlist variable)
137 char keylist[MAXBUF];
138 /* Exactly what it says. Its nothing. We point invalid parameters at this.
142 /* First, initialize our arrays */
143 for (int i = 0; i < 32; i++)
144 sep_items[i] = sep_keys[i] = NULL;
146 /* Now find all parameters that are NULL, maybe above pcnt,
147 * and for safety, point them at 'nothing'
149 for (int i = 0; i < 10; i++)
153 parameters[i] = ¬hing;
156 /* Check if we're doing JOIN handling. JOIN has two lists in
157 * it, potentially, if we have keys, so this is a special-case
158 * to handle the keys if they are provided.
162 if (pcnt > 1) /* we have a key to copy */
164 strlcpy(keylist,parameters[1],MAXBUF);
168 /* There's nothing to split! We don't do anything
170 if (!parameters[start] || (!strchr(parameters[start],',')))
175 /* This function can handle multiple comma seperated
176 * lists as one, which is a feature no actual commands
177 * have yet -- this is futureproofing in case we encounter
178 * a command that does.
182 for (int i = start; i <= end; i++)
186 strlcat(paramlist,parameters[i],MAXBUF);
190 /* Now we split off paramlist into seperate parameters using
191 * pointer voodoo, this parameter list goes into sep_items
196 for (char* i = paramlist; *i; i++)
202 sep_items[j++] = param;
203 /* Iterate along to next item, if there is one */
205 if ((unsigned int)j > Config->MaxTargets)
207 /* BZZT! Too many items */
208 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,sep_items[j-1]);
213 sep_items[j++] = param;
216 /* We add this extra comma here just to ensure we get all the keys
217 * in the event the user gave a malformed key string (yes, you guessed
218 * it, this is a mirc-ism)
220 if ((joins) && (*keylist) && (total>0)) // more than one channel and is joining
222 charlcat(keylist,',',MAXBUF);
225 /* If we're doing JOIN handling (e.g. we've had to kludge for two
226 * lists being handled at once, real smart by the way JRO </sarcasm>)
227 * and we also have keys, we must seperate out this key list into
228 * our char** list sep_keys for later use.
230 if ((joins) && (*keylist))
232 /* There is more than one key */
233 if (strchr(keylist,','))
237 for (char* i = keylist; *i; i++)
242 sep_keys[j++] = param;
247 sep_keys[j++] = param;
252 /* Now the easier bit. We call the command class's Handle function
253 * X times, where x is the number of parameters we've 'collated'.
255 for (j = 0; j < total; j++)
259 pars[0] = sep_items[j];
262 for (q = end; q < pcnt-1; q++)
266 pars[q-end+1] = parameters[q+1];
270 if ((joins) && (parameters[1]))
274 pars[1] = sep_keys[j];
282 /* repeatedly call the function with the hacked parameter list */
283 if ((joins) && (pcnt > 1))
287 /* pars[1] already set up and containing key from sep_keys[j] */
288 fn->Handle(pars,2,u);
292 pars[1] = parameters[1];
293 fn->Handle(pars,2,u);
298 fn->Handle(pars,pcnt-(end-start),u);
305 bool CommandParser::IsValidCommand(std::string &commandname, int pcnt, userrec * user)
307 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
309 if (n != cmdlist.end())
311 if ((pcnt>=n->second->min_params) && (n->second->source != "<core>"))
313 if ((strchr(user->modes,n->second->flags_needed)) || (!n->second->flags_needed))
315 if (n->second->flags_needed)
317 if ((user->HasPermission(commandname)) || (is_uline(user->server)))
335 // calls a handler function for a command
337 bool CommandParser::CallHandler(std::string &commandname,char **parameters, int pcnt, userrec *user)
339 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
341 if (n != cmdlist.end())
343 if (pcnt >= n->second->min_params)
345 if ((strchr(user->modes,n->second->flags_needed)) || (!n->second->flags_needed))
347 if (n->second->flags_needed)
349 if ((user->HasPermission(commandname)) || (!IS_LOCAL(user)))
351 n->second->Handle(parameters,pcnt,user);
357 n->second->Handle(parameters,pcnt,user);
366 int CommandParser::ProcessParameters(char **command_p,char *parameters)
369 //int q = strlen(parameters);
373 /* no parameters, command_p invalid! */
377 if (*parameters == ':')
379 command_p[0] = parameters+1;
385 char* n = strchr(parameters,' ');
386 if ((!n) || (*parameters == ':'))
388 /* only one parameter */
389 command_p[0] = parameters;
390 if (*parameters == ':')
402 command_p[j++] = parameters;
404 for (char* i = parameters; *i; i++)
408 command_p[j++] = i+1;
411 if (*command_p[j-1] == ':')
413 *command_p[j-1]++; /* remove dodgy ":" */
415 /* parameter like this marks end of the sequence */
419 return j; /* returns total number of items in the list */
422 void CommandParser::ProcessCommand(userrec *user, char* cmd)
426 char *command_p[127];
427 char p[MAXBUF], temp[MAXBUF];
428 int j, items, cmd_found;
429 int total_params = 0;
431 for (int i = 0; i < 127; i++)
434 if (!user || !cmd || !*cmd)
439 char* first_space = NULL;
441 /* If the command is > 2 characters (quick and dirty way to find out) */
442 if (*cmd && *(cmd+1) && *(cmd+2))
444 for (char* q = cmd; *q; q++)
452 // found a 'trailing', we dont count them after this.
461 // another phidjit bug...
462 if (total_params > 126)
465 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
469 strlcpy(temp,cmd,MAXBUF);
471 std::string tmp = cmd;
473 for (int i = 0; i <= MODCOUNT; i++)
475 std::string oldtmp = tmp;
476 modules[i]->OnServerRaw(tmp,true,user);
479 log(DEBUG,"A Module changed the input string!");
480 log(DEBUG,"New string: %s",tmp.c_str());
481 log(DEBUG,"Old string: %s",oldtmp.c_str());
486 strlcpy(cmd,tmp.c_str(),MAXBUF);
487 strlcpy(temp,cmd,MAXBUF);
489 char* has_space = strchr(cmd,' ');
494 * no parameters, lets skip the formalities and not chop up
497 log(DEBUG,"About to preprocess command with no params");
501 for (char* i = cmd; *i; i++,cm_length++)
510 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
511 for (char* i = temp; *i; i++)
513 if ((*i != 10) && (*i != 13) && (*i != 0) && (*i != 7))
520 /* split the full string into a command plus parameters */
529 for (char* i = cmd; *i; i++)
531 /* capitalise the command ONLY, leave params intact */
533 /* are we nearly there yet?! :P */
545 for (char* i = cmd; *i; i++,cm_length++)
552 if (cm_length > MAXCOMMAND)
554 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
558 for (char* x = command; *x; x++)
560 if (((*x < 'A') || (*x > 'Z')) && (*x != '.'))
562 if (((*x < '0') || (*x> '9')) && (*x != '-'))
564 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",*x))
566 ServerInstance->stats->statsUnknown++;
567 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
574 std::string xcommand = command;
575 if ((user->registered != 7) && (xcommand == "SERVER"))
577 kill_link(user,"Server connection to non-server port");
581 /* Tweak by brain - why was this INSIDE the mainloop? */
586 items = this->ProcessParameters(command_p,parameters);
601 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false));
602 if (MOD_RESULT == 1) {
606 nspace::hash_map<std::string,command_t*>::iterator cm = cmdlist.find(xcommand);
608 if (cm != cmdlist.end())
612 /* activity resets the ping pending timer */
613 user->nping = TIME + user->pingmax;
614 if ((items) < cm->second->min_params)
616 log(DEBUG,"not enough parameters: %s %s",user->nick,command);
617 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
620 if ((!strchr(user->modes,cm->second->flags_needed)) && (cm->second->flags_needed))
622 log(DEBUG,"permission denied: %s %s",user->nick,command);
623 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
627 if ((cm->second->flags_needed) && (!user->HasPermission(xcommand)))
629 log(DEBUG,"permission denied: %s %s",user->nick,command);
630 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
632 WriteOpers("*** \2WARNING\2: Command '%s' not allowed for oper '%s', dropped.",command,user->nick);
636 /* if the command isnt USER, PASS, or NICK, and nick is empty,
638 if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
640 if ((!isnick(user->nick)) || (user->registered != 7))
642 log(DEBUG,"not registered: %s %s",user->nick,command);
643 WriteServ(user->fd,"451 %s :You have not registered",command);
647 if ((user->registered == 7) && (!*user->oper) && (*Config->DisabledCommands))
649 std::stringstream dcmds(Config->DisabledCommands);
651 while (dcmds >> thiscmd)
653 if (!strcasecmp(thiscmd.c_str(),command))
655 // command is disabled!
656 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
661 if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
663 /* ikky /stats counters */
666 cm->second->use_count++;
667 cm->second->total_bytes+=strlen(temp);
671 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true));
678 * WARNING: nothing may come after the
679 * command handler call, as the handler
680 * may free the user structure!
683 cm->second->Handle(command_p,items,user);
688 WriteServ(user->fd,"451 %s :You have not registered",command);
695 ServerInstance->stats->statsUnknown++;
696 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
700 bool CommandParser::RemoveCommands(const char* source)
702 bool go_again = true;
708 for (nspace::hash_map<std::string,command_t*>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
710 command_t* x = i->second;
711 if (x->source == std::string(source))
713 log(DEBUG,"removecommands(%s) Removing dependent command: %s",x->source.c_str(),x->command.c_str());
724 void CommandParser::ProcessBuffer(const char* cmdbuf,userrec *user)
728 if (!user || !cmdbuf || !*cmdbuf)
730 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
734 while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
739 strlcpy(cmd,cmdbuf,MAXBUF);
741 while (charremove(cmd,10));
742 while (charremove(cmd,13));
744 int sl = strlen(cmd)-1;
745 while (sl && (cmd[sl] == ' ')) // strip trailing spaces
753 log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
759 this->ProcessCommand(user,cmd);
763 bool CommandParser::CreateCommand(command_t *f)
765 /* create the command and push it onto the table */
766 if (cmdlist.find(f->command) == cmdlist.end())
768 cmdlist[f->command] = f;
769 log(DEBUG,"Added command %s (%lu parameters)",f->command.c_str(),(unsigned long)f->min_params);
775 CommandParser::CommandParser()
777 this->SetupCommandTable();
780 void CommandParser::SetupCommandTable()
782 this->CreateCommand(new cmd_user);
783 this->CreateCommand(new cmd_nick);
784 this->CreateCommand(new cmd_quit);
785 this->CreateCommand(new cmd_version);
786 this->CreateCommand(new cmd_ping);
787 this->CreateCommand(new cmd_pong);
788 this->CreateCommand(new cmd_admin);
789 this->CreateCommand(new cmd_privmsg);
790 this->CreateCommand(new cmd_info);
791 this->CreateCommand(new cmd_time);
792 this->CreateCommand(new cmd_whois);
793 this->CreateCommand(new cmd_wallops);
794 this->CreateCommand(new cmd_notice);
795 this->CreateCommand(new cmd_join);
796 this->CreateCommand(new cmd_names);
797 this->CreateCommand(new cmd_part);
798 this->CreateCommand(new cmd_kick);
799 this->CreateCommand(new cmd_mode);
800 this->CreateCommand(new cmd_topic);
801 this->CreateCommand(new cmd_who);
802 this->CreateCommand(new cmd_motd);
803 this->CreateCommand(new cmd_rules);
804 this->CreateCommand(new cmd_oper);
805 this->CreateCommand(new cmd_list);
806 this->CreateCommand(new cmd_die);
807 this->CreateCommand(new cmd_restart);
808 this->CreateCommand(new cmd_kill);
809 this->CreateCommand(new cmd_rehash);
810 this->CreateCommand(new cmd_lusers);
811 this->CreateCommand(new cmd_stats);
812 this->CreateCommand(new cmd_userhost);
813 this->CreateCommand(new cmd_away);
814 this->CreateCommand(new cmd_ison);
815 this->CreateCommand(new cmd_summon);
816 this->CreateCommand(new cmd_users);
817 this->CreateCommand(new cmd_invite);
818 this->CreateCommand(new cmd_pass);
819 this->CreateCommand(new cmd_trace);
820 this->CreateCommand(new cmd_whowas);
821 this->CreateCommand(new cmd_connect);
822 this->CreateCommand(new cmd_squit);
823 this->CreateCommand(new cmd_modules);
824 this->CreateCommand(new cmd_links);
825 this->CreateCommand(new cmd_map);
826 this->CreateCommand(new cmd_kline);
827 this->CreateCommand(new cmd_gline);
828 this->CreateCommand(new cmd_zline);
829 this->CreateCommand(new cmd_qline);
830 this->CreateCommand(new cmd_eline);
831 this->CreateCommand(new cmd_loadmodule);
832 this->CreateCommand(new cmd_unloadmodule);
833 this->CreateCommand(new cmd_server);
834 this->CreateCommand(new cmd_commands);