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)
115 char blog[32][MAXBUF];
116 char blog2[32][MAXBUF];
117 int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
121 for (int i = 0; i <32; i++)
128 for (int i = 0; i <10; i++)
137 if (pcnt > 1) /* we have a key to copy */
139 strlcpy(keystr,parameters[1],MAXBUF);
143 if (!parameters[start] || (!strchr(parameters[start],',')))
150 for (int i = start; i <= end; i++)
154 strlcat(plist,parameters[i],MAXBUF);
163 for (int i = 0; i < t; i++)
168 strlcpy(blog[j++],param,MAXBUF);
170 if ((unsigned int)j > Config->MaxTargets)
172 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
178 strlcpy(blog[j++],param,MAXBUF);
181 if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
186 if ((joins) && (keystr))
188 if (strchr(keystr,','))
194 for (int i = 0; i < t2; i++)
196 if (keystr[i] == ',')
199 strlcpy(blog2[j++],param,MAXBUF);
204 strlcpy(blog2[j++],param,MAXBUF);
209 for (j = 0; j < total; j++)
216 for (q = end; q < pcnt-1; q++)
220 pars[q-end+1] = parameters[q+1];
224 if ((joins) && (parameters[1]))
236 /* repeatedly call the function with the hacked parameter list */
237 if ((joins) && (pcnt > 1))
241 // pars[1] already set up and containing key from blog2[j]
242 fn->Handle(pars,2,u);
246 pars[1] = parameters[1];
247 fn->Handle(pars,2,u);
252 fn->Handle(pars,pcnt-(end-start),u);
259 bool CommandParser::IsValidCommand(std::string &commandname, int pcnt, userrec * user)
261 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
263 if (n != cmdlist.end())
265 if ((pcnt>=n->second->min_params) && (n->second->source != "<core>"))
267 if ((strchr(user->modes,n->second->flags_needed)) || (!n->second->flags_needed))
269 if (n->second->flags_needed)
271 if ((user->HasPermission(commandname)) || (is_uline(user->server)))
289 // calls a handler function for a command
291 void CommandParser::CallHandler(std::string &commandname,char **parameters, int pcnt, userrec *user)
293 nspace::hash_map<std::string,command_t*>::iterator n = cmdlist.find(commandname);
295 if (n != cmdlist.end())
297 if (pcnt >= n->second->min_params)
299 if ((strchr(user->modes,n->second->flags_needed)) || (!n->second->flags_needed))
301 if (n->second->flags_needed)
303 if ((user->HasPermission(commandname)) || (is_uline(user->server)))
305 n->second->Handle(parameters,pcnt,user);
310 WriteOpers("*** \2WARNING\2: Command '%s' not allowed for oper '%s', dropped.",commandname.c_str(),user->nick);
315 n->second->Handle(parameters,pcnt,user);
322 int CommandParser::ProcessParameters(char **command_p,char *parameters)
325 int q = strlen(parameters);
329 /* no parameters, command_p invalid! */
333 if (parameters[0] == ':')
335 command_p[0] = parameters+1;
341 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
343 /* only one parameter */
344 command_p[0] = parameters;
345 if (parameters[0] == ':')
347 if (strchr(parameters,' ') != NULL)
357 command_p[j++] = parameters;
359 for (int i = 0; i <= q; i++)
361 if (parameters[i] == ' ')
363 command_p[j++] = parameters+i+1;
364 parameters[i] = '\0';
366 if (command_p[j-1][0] == ':')
368 *command_p[j-1]++; /* remove dodgy ":" */
370 /* parameter like this marks end of the sequence */
375 return j; /* returns total number of items in the list */
378 void CommandParser::ProcessCommand(userrec *user, char* cmd)
382 char *command_p[127];
383 char p[MAXBUF], temp[MAXBUF];
384 int j, items, cmd_found;
385 int total_params = 0;
388 for (int i = 0; i < 127; i++)
391 if (!user || !cmd || !*cmd)
400 for (unsigned int q = 0; q < xl - 1; q++)
407 // found a 'trailing', we dont count them after this.
416 // another phidjit bug...
417 if (total_params > 126)
419 *(strchr(cmd,' ')) = '\0';
420 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
424 strlcpy(temp,cmd,MAXBUF);
426 std::string tmp = cmd;
428 for (int i = 0; i <= MODCOUNT; i++)
430 std::string oldtmp = tmp;
431 modules[i]->OnServerRaw(tmp,true,user);
434 log(DEBUG,"A Module changed the input string!");
435 log(DEBUG,"New string: %s",tmp.c_str());
436 log(DEBUG,"Old string: %s",oldtmp.c_str());
441 strlcpy(cmd,tmp.c_str(),MAXBUF);
442 strlcpy(temp,cmd,MAXBUF);
444 if (!strchr(cmd,' '))
447 * no parameters, lets skip the formalities and not chop up
450 log(DEBUG,"About to preprocess command with no params");
454 unsigned int tl = strlen(cmd);
455 for (unsigned int i = 0; i <= tl; i++)
457 cmd[i] = toupper(cmd[i]);
466 unsigned int vl = strlen(temp);
467 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
468 for (unsigned int i = 0; i < vl; i++)
470 if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
477 /* split the full string into a command plus parameters */
486 unsigned int cl = strlen(cmd);
488 for (unsigned int i = 0; i <= cl; i++)
490 /* capitalise the command ONLY, leave params intact */
491 cmd[i] = toupper(cmd[i]);
492 /* are we nearly there yet?! :P */
496 parameters = cmd+i+1;
504 for (char* i = cmd; *i; i++)
511 if (strlen(command)>MAXCOMMAND)
513 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
517 for (char* x = command; *x; x++)
519 if (((*x < 'A') || (*x > 'Z')) && (*x != '.'))
521 if (((*x < '0') || (*x> '9')) && (*x != '-'))
523 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",*x))
525 ServerInstance->stats->statsUnknown++;
526 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
533 std::string xcommand = command;
534 if ((user->registered != 7) && (xcommand == "SERVER"))
536 kill_link(user,"Server connection to non-server port");
540 /* Tweak by brain - why was this INSIDE the mainloop? */
545 items = this->ProcessParameters(command_p,parameters);
560 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,false));
561 if (MOD_RESULT == 1) {
565 nspace::hash_map<std::string,command_t*>::iterator cm = cmdlist.find(xcommand);
567 if (cm != cmdlist.end())
571 /* activity resets the ping pending timer */
572 user->nping = TIME + user->pingmax;
573 if ((items) < cm->second->min_params)
575 log(DEBUG,"not enough parameters: %s %s",user->nick,command);
576 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
579 if ((!strchr(user->modes,cm->second->flags_needed)) && (cm->second->flags_needed))
581 log(DEBUG,"permission denied: %s %s",user->nick,command);
582 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
586 if ((cm->second->flags_needed) && (!user->HasPermission(xcommand)))
588 log(DEBUG,"permission denied: %s %s",user->nick,command);
589 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
591 WriteOpers("*** \2WARNING\2: Command '%s' not allowed for oper '%s', dropped.",command,user->nick);
595 /* if the command isnt USER, PASS, or NICK, and nick is empty,
597 if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
599 if ((!isnick(user->nick)) || (user->registered != 7))
601 log(DEBUG,"not registered: %s %s",user->nick,command);
602 WriteServ(user->fd,"451 %s :You have not registered",command);
606 if ((user->registered == 7) && (!*user->oper) && (*Config->DisabledCommands))
608 std::stringstream dcmds(Config->DisabledCommands);
610 while (dcmds >> thiscmd)
612 if (!strcasecmp(thiscmd.c_str(),command))
614 // command is disabled!
615 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
620 if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
622 /* ikky /stats counters */
625 cm->second->use_count++;
626 cm->second->total_bytes+=strlen(temp);
630 FOREACH_RESULT(I_OnPreCommand,OnPreCommand(command,command_p,items,user,true));
637 * WARNING: nothing may come after the
638 * command handler call, as the handler
639 * may free the user structure!
642 cm->second->Handle(command_p,items,user);
647 WriteServ(user->fd,"451 %s :You have not registered",command);
654 ServerInstance->stats->statsUnknown++;
655 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
659 bool CommandParser::RemoveCommands(const char* source)
661 bool go_again = true;
667 for (nspace::hash_map<std::string,command_t*>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
669 command_t* x = i->second;
670 if (x->source == std::string(source))
672 log(DEBUG,"removecommands(%s) Removing dependent command: %s",x->source.c_str(),x->command.c_str());
683 void CommandParser::ProcessBuffer(const char* cmdbuf,userrec *user)
689 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
694 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
702 while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
704 strlcpy(cmd,cmdbuf,MAXBUF);
712 /* XXX - This is ugly as sin, and incomprehensible - why are we doing this twice, for instance? --w00t */
713 int sl = strlen(cmd)-1;
715 if ((cmd[sl] == 13) || (cmd[sl] == 10))
722 if ((cmd[sl] == 13) || (cmd[sl] == 10))
730 while (cmd[sl] == ' ') // strip trailing spaces
741 log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
745 this->ProcessCommand(user,cmd);
749 bool CommandParser::CreateCommand(command_t *f)
751 /* create the command and push it onto the table */
752 if (cmdlist.find(f->command) == cmdlist.end())
754 cmdlist[f->command] = f;
755 log(DEBUG,"Added command %s (%lu parameters)",f->command.c_str(),(unsigned long)f->min_params);
761 CommandParser::CommandParser()
763 this->SetupCommandTable();
766 void CommandParser::SetupCommandTable()
768 this->CreateCommand(new cmd_user);
769 this->CreateCommand(new cmd_nick);
770 this->CreateCommand(new cmd_quit);
771 this->CreateCommand(new cmd_version);
772 this->CreateCommand(new cmd_ping);
773 this->CreateCommand(new cmd_pong);
774 this->CreateCommand(new cmd_admin);
775 this->CreateCommand(new cmd_privmsg);
776 this->CreateCommand(new cmd_info);
777 this->CreateCommand(new cmd_time);
778 this->CreateCommand(new cmd_whois);
779 this->CreateCommand(new cmd_wallops);
780 this->CreateCommand(new cmd_notice);
781 this->CreateCommand(new cmd_join);
782 this->CreateCommand(new cmd_names);
783 this->CreateCommand(new cmd_part);
784 this->CreateCommand(new cmd_kick);
785 this->CreateCommand(new cmd_mode);
786 this->CreateCommand(new cmd_topic);
787 this->CreateCommand(new cmd_who);
788 this->CreateCommand(new cmd_motd);
789 this->CreateCommand(new cmd_rules);
790 this->CreateCommand(new cmd_oper);
791 this->CreateCommand(new cmd_list);
792 this->CreateCommand(new cmd_die);
793 this->CreateCommand(new cmd_restart);
794 this->CreateCommand(new cmd_kill);
795 this->CreateCommand(new cmd_rehash);
796 this->CreateCommand(new cmd_lusers);
797 this->CreateCommand(new cmd_stats);
798 this->CreateCommand(new cmd_userhost);
799 this->CreateCommand(new cmd_away);
800 this->CreateCommand(new cmd_ison);
801 this->CreateCommand(new cmd_summon);
802 this->CreateCommand(new cmd_users);
803 this->CreateCommand(new cmd_invite);
804 this->CreateCommand(new cmd_pass);
805 this->CreateCommand(new cmd_trace);
806 this->CreateCommand(new cmd_whowas);
807 this->CreateCommand(new cmd_connect);
808 this->CreateCommand(new cmd_squit);
809 this->CreateCommand(new cmd_modules);
810 this->CreateCommand(new cmd_links);
811 this->CreateCommand(new cmd_map);
812 this->CreateCommand(new cmd_kline);
813 this->CreateCommand(new cmd_gline);
814 this->CreateCommand(new cmd_zline);
815 this->CreateCommand(new cmd_qline);
816 this->CreateCommand(new cmd_eline);
817 this->CreateCommand(new cmd_loadmodule);
818 this->CreateCommand(new cmd_unloadmodule);
819 this->CreateCommand(new cmd_server);
820 this->CreateCommand(new cmd_commands);