modules/m_set.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_set.c: Sets a server parameter.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  *
  24  *  $Id: m_set.c 3406 2007-04-13 19:06:53Z jilles $
  25  */
  26
  27 /* rewritten by jdc */
  28
  29 #include "stdinc.h"
  30 #include "client.h"
  31 #include "match.h"
  32 #include "ircd.h"
  33 #include "numeric.h"
  34 #include "s_serv.h"
  35 #include "send.h"
  36 #include "common.h"
  37 #include "channel.h"
  38 #include "s_conf.h"
  39 #include "s_newconf.h"
  40 #include "msg.h"
  41 #include "parse.h"
  42 #include "modules.h"
  43
  44 static int mo_set(struct Client *, struct Client *, int, const char **);
  45
  46 struct Message set_msgtab = {
  47         "SET", 0, 0, 0, MFLG_SLOW,
  48         {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_set, 0}}
  49 };
  50
  51 mapi_clist_av1 set_clist[] = { &set_msgtab, NULL };
  52 DECLARE_MODULE_AV1(set, NULL, NULL, set_clist, NULL, NULL, "$Revision: 3406 $");
  53
  54 /* Structure used for the SET table itself */
  55 struct SetStruct
  56 {
  57         const char *name;
  58         void (*handler) ();
  59         int wants_char;         /* 1 if it expects (char *, [int]) */
  60         int wants_int;          /* 1 if it expects ([char *], int) */
  61
  62         /* eg:  0, 1 == only an int arg
  63          * eg:  1, 1 == char and int args */
  64 };
  65
  66
  67 static void quote_adminstring(struct Client *, const char *);
  68 static void quote_autoconn(struct Client *, char *, int);
  69 static void quote_autoconnall(struct Client *, int);
  70 static void quote_floodcount(struct Client *, int);
  71 static void quote_identtimeout(struct Client *, int);
  72 static void quote_max(struct Client *, int);
  73 static void quote_operstring(struct Client *, const char *);
  74 static void quote_spamnum(struct Client *, int);
  75 static void quote_spamtime(struct Client *, int);
  76 static void quote_splitmode(struct Client *, char *);
  77 static void quote_splitnum(struct Client *, int);
  78 static void quote_splitusers(struct Client *, int);
  79 static void list_quote_commands(struct Client *);
  80
  81
  82 /*
  83  * If this ever needs to be expanded to more than one arg of each
  84  * type, want_char/want_int could be the count of the arguments,
  85  * instead of just a boolean flag...
  86  *
  87  * -davidt
  88  */
  89
  90 static struct SetStruct set_cmd_table[] = {
  91         /* name               function      string arg  int arg */
  92         /* -------------------------------------------------------- */
  93         {"ADMINSTRING", quote_adminstring,      1,      0       },
  94         {"AUTOCONN",    quote_autoconn,         1,      1       },
  95         {"AUTOCONNALL", quote_autoconnall,      0,      1       },
  96         {"FLOODCOUNT",  quote_floodcount,       0,      1       },
  97         {"IDENTTIMEOUT", quote_identtimeout,    0,      1       },
  98         {"MAX",         quote_max,              0,      1       },
  99         {"MAXCLIENTS",  quote_max,              0,      1       },
 100         {"OPERSTRING",  quote_operstring,       1,      0       },
 101         {"SPAMNUM",     quote_spamnum,          0,      1       },
 102         {"SPAMTIME",    quote_spamtime,         0,      1       },
 103         {"SPLITMODE",   quote_splitmode,        1,      0       },
 104         {"SPLITNUM",    quote_splitnum,         0,      1       },
 105         {"SPLITUSERS",  quote_splitusers,       0,      1       },
 106         /* -------------------------------------------------------- */
 107         {(char *) 0, (void (*)()) 0, 0, 0}
 108 };
 109
 110
 111 /*
 112  * list_quote_commands() sends the client all the available commands.
 113  * Four to a line for now.
 114  */
 115 static void
 116 list_quote_commands(struct Client *source_p)
 117 {
 118         int i;
 119         int j = 0;
 120         const char *names[4];
 121
 122         sendto_one_notice(source_p, ":Available QUOTE SET commands:");
 123
 124         names[0] = names[1] = names[2] = names[3] = "";
 125
 126         for (i = 0; set_cmd_table[i].handler; i++)
 127         {
 128                 names[j++] = set_cmd_table[i].name;
 129
 130                 if(j > 3)
 131                 {
 132                         sendto_one_notice(source_p, ":%s %s %s %s",
 133                                    names[0], names[1], names[2], names[3]);
 134                         j = 0;
 135                         names[0] = names[1] = names[2] = names[3] = "";
 136                 }
 137
 138         }
 139         if(j)
 140                 sendto_one_notice(source_p, ":%s %s %s %s",
 141                            names[0], names[1], names[2], names[3]);
 142 }
 143
 144 /* SET AUTOCONN */
 145 static void
 146 quote_autoconn(struct Client *source_p, char *arg, int newval)
 147 {
 148         set_server_conf_autoconn(source_p, arg, newval);
 149 }
 150
 151 /* SET AUTOCONNALL */
 152 static void
 153 quote_autoconnall(struct Client *source_p, int newval)
 154 {
 155         if(newval >= 0)
 156         {
 157                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed AUTOCONNALL to %i",
 158                                      source_p->name, newval);
 159
 160                 GlobalSetOptions.autoconn = newval;
 161         }
 162         else
 163         {
 164                 sendto_one_notice(source_p, ":AUTOCONNALL is currently %i",
 165                            GlobalSetOptions.autoconn);
 166         }
 167 }
 168
 169
 170 /* SET FLOODCOUNT */
 171 static void
 172 quote_floodcount(struct Client *source_p, int newval)
 173 {
 174         if(newval >= 0)
 175         {
 176                 GlobalSetOptions.floodcount = newval;
 177                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 178                                      "%s has changed FLOODCOUNT to %i", source_p->name,
 179                                      GlobalSetOptions.floodcount);
 180         }
 181         else
 182         {
 183                 sendto_one_notice(source_p, ":FLOODCOUNT is currently %i",
 184                            GlobalSetOptions.floodcount);
 185         }
 186 }
 187
 188 /* SET IDENTTIMEOUT */
 189 static void
 190 quote_identtimeout(struct Client *source_p, int newval)
 191 {
 192         if(!IsOperAdmin(source_p))
 193         {
 194                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 195                            me.name, source_p->name, "admin");
 196                 return;
 197         }
 198
 199         if(newval > 0)
 200         {
 201                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 202                                      "%s has changed IDENTTIMEOUT to %d",
 203                                      get_oper_name(source_p), newval);
 204                 GlobalSetOptions.ident_timeout = newval;
 205         }
 206         else
 207                 sendto_one_notice(source_p, ":IDENTTIMEOUT is currently %d",
 208                            GlobalSetOptions.ident_timeout);
 209 }
 210
 211 /* SET MAX */
 212 static void
 213 quote_max(struct Client *source_p, int newval)
 214 {
 215         if(newval > 0)
 216         {
 217                 if(newval > maxconnections - MAX_BUFFER)
 218                 {
 219                         sendto_one_notice(source_p,
 220                                           ":You cannot set MAXCLIENTS to > %d",
 221                                           maxconnections - MAX_BUFFER);
 222                         return;
 223                 }
 224
 225                 if(newval < 32)
 226                 {
 227                         sendto_one_notice(source_p, ":You cannot set MAXCLIENTS to < 32 (%d:%d)",
 228                                    GlobalSetOptions.maxclients, rb_getmaxconnect());
 229                         return;
 230                 }
 231
 232                 GlobalSetOptions.maxclients = newval;
 233
 234                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 235                                      "%s!%s@%s set new MAXCLIENTS to %d (%lu current)",
 236                                      source_p->name, source_p->username, source_p->host,
 237                                      GlobalSetOptions.maxclients,
 238                                      rb_dlink_list_length(&lclient_list));
 239
 240                 return;
 241         }
 242         else
 243         {
 244                 sendto_one_notice(source_p, ":Current Maxclients = %d (%lu)",
 245                            GlobalSetOptions.maxclients, rb_dlink_list_length(&lclient_list));
 246         }
 247 }
 248
 249 /* SET OPERSTRING */
 250 static void
 251 quote_operstring(struct Client *source_p, const char *arg)
 252 {
 253         if(EmptyString(arg))
 254         {
 255                 sendto_one_notice(source_p, ":OPERSTRING is currently '%s'", GlobalSetOptions.operstring);
 256         }
 257         else
 258         {
 259                 rb_strlcpy(GlobalSetOptions.operstring, arg,
 260                         sizeof(GlobalSetOptions.operstring));
 261
 262                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 263                                      "%s has changed OPERSTRING to '%s'",
 264                                      get_oper_name(source_p), arg);
 265         }
 266 }
 267
 268 /* SET ADMINSTRING */
 269 static void
 270 quote_adminstring(struct Client *source_p, const char *arg)
 271 {
 272         if(EmptyString(arg))
 273         {
 274                 sendto_one_notice(source_p, ":ADMINSTRING is currently '%s'", GlobalSetOptions.adminstring);
 275         }
 276         else
 277         {
 278                 rb_strlcpy(GlobalSetOptions.adminstring, arg,
 279                         sizeof(GlobalSetOptions.adminstring));
 280
 281                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 282                                      "%s has changed ADMINSTRING to '%s'",
 283                                      get_oper_name(source_p), arg);
 284         }
 285 }
 286
 287 /* SET SPAMNUM */
 288 static void
 289 quote_spamnum(struct Client *source_p, int newval)
 290 {
 291         if(newval > 0)
 292         {
 293                 if(newval == 0)
 294                 {
 295                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 296                                              "%s has disabled ANTI_SPAMBOT", source_p->name);
 297                         GlobalSetOptions.spam_num = newval;
 298                         return;
 299                 }
 300                 if(newval < MIN_SPAM_NUM)
 301                 {
 302                         GlobalSetOptions.spam_num = MIN_SPAM_NUM;
 303                 }
 304                 else            /* if (newval < MIN_SPAM_NUM) */
 305                 {
 306                         GlobalSetOptions.spam_num = newval;
 307                 }
 308                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMNUM to %i",
 309                                      source_p->name, GlobalSetOptions.spam_num);
 310         }
 311         else
 312         {
 313                 sendto_one_notice(source_p, ":SPAMNUM is currently %i", GlobalSetOptions.spam_num);
 314         }
 315 }
 316
 317 /* SET SPAMTIME */
 318 static void
 319 quote_spamtime(struct Client *source_p, int newval)
 320 {
 321         if(newval > 0)
 322         {
 323                 if(newval < MIN_SPAM_TIME)
 324                 {
 325                         GlobalSetOptions.spam_time = MIN_SPAM_TIME;
 326                 }
 327                 else            /* if (newval < MIN_SPAM_TIME) */
 328                 {
 329                         GlobalSetOptions.spam_time = newval;
 330                 }
 331                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMTIME to %i",
 332                                      source_p->name, GlobalSetOptions.spam_time);
 333         }
 334         else
 335         {
 336                 sendto_one_notice(source_p, ":SPAMTIME is currently %i", GlobalSetOptions.spam_time);
 337         }
 338 }
 339
 340 /* this table is what splitmode may be set to */
 341 static const char *splitmode_values[] = {
 342         "OFF",
 343         "ON",
 344         "AUTO",
 345         NULL
 346 };
 347
 348 /* this table is what splitmode may be */
 349 static const char *splitmode_status[] = {
 350         "OFF",
 351         "AUTO (OFF)",
 352         "ON",
 353         "AUTO (ON)",
 354         NULL
 355 };
 356
 357 /* SET SPLITMODE */
 358 static void
 359 quote_splitmode(struct Client *source_p, char *charval)
 360 {
 361         if(charval)
 362         {
 363                 int newval;
 364
 365                 for (newval = 0; splitmode_values[newval]; newval++)
 366                 {
 367                         if(!irccmp(splitmode_values[newval], charval))
 368                                 break;
 369                 }
 370
 371                 /* OFF */
 372                 if(newval == 0)
 373                 {
 374                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 375                                              "%s is disabling splitmode", get_oper_name(source_p));
 376
 377                         splitmode = 0;
 378                         splitchecking = 0;
 379
 380                         rb_event_delete(check_splitmode_ev);
 381                         check_splitmode_ev = NULL;
 382                 }
 383                 /* ON */
 384                 else if(newval == 1)
 385                 {
 386                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 387                                              "%s is enabling and activating splitmode",
 388                                              get_oper_name(source_p));
 389
 390                         splitmode = 1;
 391                         splitchecking = 0;
 392
 393                         /* we might be deactivating an automatic splitmode, so pull the event */
 394                         rb_event_delete(check_splitmode_ev);
 395                         check_splitmode_ev = NULL;
 396                 }
 397                 /* AUTO */
 398                 else if(newval == 2)
 399                 {
 400                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 401                                              "%s is enabling automatic splitmode",
 402                                              get_oper_name(source_p));
 403
 404                         splitchecking = 1;
 405                         check_splitmode(NULL);
 406                 }
 407         }
 408         else
 409                 /* if we add splitchecking to splitmode*2 we get a unique table to
 410                  * pull values back out of, splitmode can be four states - but you can
 411                  * only set to three, which means we cant use the same table --fl_
 412                  */
 413                 sendto_one_notice(source_p, ":SPLITMODE is currently %s",
 414                            splitmode_status[(splitchecking + (splitmode * 2))]);
 415 }
 416
 417 /* SET SPLITNUM */
 418 static void
 419 quote_splitnum(struct Client *source_p, int newval)
 420 {
 421         if(newval >= 0)
 422         {
 423                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 424                                      "%s has changed SPLITNUM to %i", source_p->name, newval);
 425                 split_servers = newval;
 426
 427                 if(splitchecking)
 428                         check_splitmode(NULL);
 429         }
 430         else
 431                 sendto_one_notice(source_p, ":SPLITNUM is currently %i", split_servers);
 432 }
 433
 434 /* SET SPLITUSERS */
 435 static void
 436 quote_splitusers(struct Client *source_p, int newval)
 437 {
 438         if(newval >= 0)
 439         {
 440                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 441                                      "%s has changed SPLITUSERS to %i", source_p->name, newval);
 442                 split_users = newval;
 443
 444                 if(splitchecking)
 445                         check_splitmode(NULL);
 446         }
 447         else
 448                 sendto_one_notice(source_p, ":SPLITUSERS is currently %i", split_users);
 449 }
 450
 451 /*
 452  * mo_set - SET command handler
 453  * set options while running
 454  */
 455 static int
 456 mo_set(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 457 {
 458         int newval;
 459         int i, n;
 460         const char *arg = NULL;
 461         const char *intarg = NULL;
 462
 463         if(parc > 1)
 464         {
 465                 /*
 466                  * Go through all the commands in set_cmd_table, until one is
 467                  * matched.  I realize strcmp() is more intensive than a numeric
 468                  * lookup, but at least it's better than a big-ass switch/case
 469                  * statement.
 470                  */
 471                 for (i = 0; set_cmd_table[i].handler; i++)
 472                 {
 473                         if(!irccmp(set_cmd_table[i].name, parv[1]))
 474                         {
 475                                 /*
 476                                  * Command found; now execute the code
 477                                  */
 478                                 n = 2;
 479
 480                                 if(set_cmd_table[i].wants_char)
 481                                 {
 482                                         arg = parv[n++];
 483                                 }
 484
 485                                 if(set_cmd_table[i].wants_int)
 486                                 {
 487                                         intarg = parv[n++];
 488                                 }
 489
 490                                 if((n - 1) > parc)
 491                                 {
 492                                         sendto_one_notice(source_p,
 493                                                    ":SET %s expects (\"%s%s\") args",
 494                                                    set_cmd_table[i].name,
 495                                                    (set_cmd_table[i].
 496                                                     wants_char ? "string, " : ""),
 497                                                    (set_cmd_table[i].
 498                                                     wants_char ? "int" : ""));
 499                                         return 0;
 500                                 }
 501
 502                                 if(parc <= 2)
 503                                 {
 504                                         arg = NULL;
 505                                         intarg = NULL;
 506                                 }
 507
 508                                 if(set_cmd_table[i].wants_int && (parc > 2))
 509                                 {
 510                                         if(intarg)
 511                                         {
 512                                                 if(!irccmp(intarg, "yes") || !irccmp(intarg, "on"))
 513                                                         newval = 1;
 514                                                 else if(!irccmp(intarg, "no")
 515                                                         || !irccmp(intarg, "off"))
 516                                                         newval = 0;
 517                                                 else
 518                                                         newval = atoi(intarg);
 519                                         }
 520                                         else
 521                                         {
 522                                                 newval = -1;
 523                                         }
 524
 525                                         if(newval < 0)
 526                                         {
 527                                                 sendto_one_notice(source_p,
 528                                                            ":Value less than 0 illegal for %s",
 529                                                            set_cmd_table[i].name);
 530
 531                                                 return 0;
 532                                         }
 533                                 }
 534                                 else
 535                                         newval = -1;
 536
 537                                 if(set_cmd_table[i].wants_char)
 538                                 {
 539                                         if(set_cmd_table[i].wants_int)
 540                                                 set_cmd_table[i].handler(source_p, arg, newval);
 541                                         else
 542                                                 set_cmd_table[i].handler(source_p, arg);
 543                                         return 0;
 544                                 }
 545                                 else
 546                                 {
 547                                         if(set_cmd_table[i].wants_int)
 548                                                 set_cmd_table[i].handler(source_p, newval);
 549                                         else
 550                                                 /* Just in case someone actually wants a
 551                                                  * set function that takes no args.. *shrug* */
 552                                                 set_cmd_table[i].handler(source_p);
 553                                         return 0;
 554                                 }
 555                         }
 556                 }
 557
 558                 /*
 559                  * Code here will be executed when a /QUOTE SET command is not
 560                  * found within set_cmd_table.
 561                  */
 562                 sendto_one_notice(source_p, ":Variable not found.");
 563                 return 0;
 564         }
 565
 566         list_quote_commands(source_p);
 567
 568         return 0;
 569 }