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)(struct Client *source_p, const char *chararg, int intarg);
  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 *, int);
  68 static void quote_autoconn(struct Client *, const char *, int);
  69 static void quote_autoconnall(struct Client *, const char *, int);
  70 static void quote_floodcount(struct Client *, const char *, int);
  71 static void quote_identtimeout(struct Client *, const char *, int);
  72 static void quote_max(struct Client *, const char *, int);
  73 static void quote_operstring(struct Client *, const char *, int);
  74 static void quote_spamnum(struct Client *, const char *, int);
  75 static void quote_spamtime(struct Client *, const char *, int);
  76 static void quote_splitmode(struct Client *, const char *, int);
  77 static void quote_splitnum(struct Client *, const char *, int);
  78 static void quote_splitusers(struct Client *, const char *, int);
  79
  80 static void list_quote_commands(struct Client *);
  81
  82
  83 /*
  84  * If this ever needs to be expanded to more than one arg of each
  85  * type, want_char/want_int could be the count of the arguments,
  86  * instead of just a boolean flag...
  87  *
  88  * -davidt
  89  */
  90
  91 static struct SetStruct set_cmd_table[] = {
  92         /* name               function      string arg  int arg */
  93         /* -------------------------------------------------------- */
  94         {"ADMINSTRING", quote_adminstring,      1,      0       },
  95         {"AUTOCONN",    quote_autoconn,         1,      1       },
  96         {"AUTOCONNALL", quote_autoconnall,      0,      1       },
  97         {"FLOODCOUNT",  quote_floodcount,       0,      1       },
  98         {"IDENTTIMEOUT", quote_identtimeout,    0,      1       },
  99         {"MAX",         quote_max,              0,      1       },
 100         {"MAXCLIENTS",  quote_max,              0,      1       },
 101         {"OPERSTRING",  quote_operstring,       1,      0       },
 102         {"SPAMNUM",     quote_spamnum,          0,      1       },
 103         {"SPAMTIME",    quote_spamtime,         0,      1       },
 104         {"SPLITMODE",   quote_splitmode,        1,      0       },
 105         {"SPLITNUM",    quote_splitnum,         0,      1       },
 106         {"SPLITUSERS",  quote_splitusers,       0,      1       },
 107         /* -------------------------------------------------------- */
 108         {(char *) 0, (void (*)(struct Client *, const char *, int)) 0, 0, 0}
 109 };
 110
 111
 112 /*
 113  * list_quote_commands() sends the client all the available commands.
 114  * Four to a line for now.
 115  */
 116 static void
 117 list_quote_commands(struct Client *source_p)
 118 {
 119         int i;
 120         int j = 0;
 121         const char *names[4];
 122
 123         sendto_one_notice(source_p, ":Available QUOTE SET commands:");
 124
 125         names[0] = names[1] = names[2] = names[3] = "";
 126
 127         for (i = 0; set_cmd_table[i].handler; i++)
 128         {
 129                 names[j++] = set_cmd_table[i].name;
 130
 131                 if(j > 3)
 132                 {
 133                         sendto_one_notice(source_p, ":%s %s %s %s",
 134                                    names[0], names[1], names[2], names[3]);
 135                         j = 0;
 136                         names[0] = names[1] = names[2] = names[3] = "";
 137                 }
 138
 139         }
 140         if(j)
 141                 sendto_one_notice(source_p, ":%s %s %s %s",
 142                            names[0], names[1], names[2], names[3]);
 143 }
 144
 145 /* SET AUTOCONN */
 146 static void
 147 quote_autoconn(struct Client *source_p, const char *arg, int newval)
 148 {
 149         set_server_conf_autoconn(source_p, arg, newval);
 150 }
 151
 152 /* SET AUTOCONNALL */
 153 static void
 154 quote_autoconnall(struct Client *source_p, const char *arg, int newval)
 155 {
 156         if(newval >= 0)
 157         {
 158                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed AUTOCONNALL to %i",
 159                                      source_p->name, newval);
 160
 161                 GlobalSetOptions.autoconn = newval;
 162         }
 163         else
 164         {
 165                 sendto_one_notice(source_p, ":AUTOCONNALL is currently %i",
 166                            GlobalSetOptions.autoconn);
 167         }
 168 }
 169
 170
 171 /* SET FLOODCOUNT */
 172 static void
 173 quote_floodcount(struct Client *source_p, const char *arg, int newval)
 174 {
 175         if(newval >= 0)
 176         {
 177                 GlobalSetOptions.floodcount = newval;
 178                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 179                                      "%s has changed FLOODCOUNT to %i", source_p->name,
 180                                      GlobalSetOptions.floodcount);
 181         }
 182         else
 183         {
 184                 sendto_one_notice(source_p, ":FLOODCOUNT is currently %i",
 185                            GlobalSetOptions.floodcount);
 186         }
 187 }
 188
 189 /* SET IDENTTIMEOUT */
 190 static void
 191 quote_identtimeout(struct Client *source_p, const char *arg, int newval)
 192 {
 193         if(!IsOperAdmin(source_p))
 194         {
 195                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 196                            me.name, source_p->name, "admin");
 197                 return;
 198         }
 199
 200         if(newval > 0)
 201         {
 202                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 203                                      "%s has changed IDENTTIMEOUT to %d",
 204                                      get_oper_name(source_p), newval);
 205                 GlobalSetOptions.ident_timeout = newval;
 206         }
 207         else
 208                 sendto_one_notice(source_p, ":IDENTTIMEOUT is currently %d",
 209                            GlobalSetOptions.ident_timeout);
 210 }
 211
 212 /* SET MAX */
 213 static void
 214 quote_max(struct Client *source_p, const char *arg, int newval)
 215 {
 216         if(newval > 0)
 217         {
 218                 if(newval > maxconnections - MAX_BUFFER)
 219                 {
 220                         sendto_one_notice(source_p,
 221                                           ":You cannot set MAXCLIENTS to > %d",
 222                                           maxconnections - MAX_BUFFER);
 223                         return;
 224                 }
 225
 226                 if(newval < 32)
 227                 {
 228                         sendto_one_notice(source_p, ":You cannot set MAXCLIENTS to < 32 (%d:%d)",
 229                                    GlobalSetOptions.maxclients, rb_getmaxconnect());
 230                         return;
 231                 }
 232
 233                 GlobalSetOptions.maxclients = newval;
 234
 235                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 236                                      "%s!%s@%s set new MAXCLIENTS to %d (%lu current)",
 237                                      source_p->name, source_p->username, source_p->host,
 238                                      GlobalSetOptions.maxclients,
 239                                      rb_dlink_list_length(&lclient_list));
 240
 241                 return;
 242         }
 243         else
 244         {
 245                 sendto_one_notice(source_p, ":Current Maxclients = %d (%lu)",
 246                            GlobalSetOptions.maxclients, rb_dlink_list_length(&lclient_list));
 247         }
 248 }
 249
 250 /* SET OPERSTRING */
 251 static void
 252 quote_operstring(struct Client *source_p, const char *arg, int newval)
 253 {
 254         if(EmptyString(arg))
 255         {
 256                 sendto_one_notice(source_p, ":OPERSTRING is currently '%s'", GlobalSetOptions.operstring);
 257         }
 258         else
 259         {
 260                 rb_strlcpy(GlobalSetOptions.operstring, arg,
 261                         sizeof(GlobalSetOptions.operstring));
 262
 263                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 264                                      "%s has changed OPERSTRING to '%s'",
 265                                      get_oper_name(source_p), arg);
 266         }
 267 }
 268
 269 /* SET ADMINSTRING */
 270 static void
 271 quote_adminstring(struct Client *source_p, const char *arg, int newval)
 272 {
 273         if(EmptyString(arg))
 274         {
 275                 sendto_one_notice(source_p, ":ADMINSTRING is currently '%s'", GlobalSetOptions.adminstring);
 276         }
 277         else
 278         {
 279                 rb_strlcpy(GlobalSetOptions.adminstring, arg,
 280                         sizeof(GlobalSetOptions.adminstring));
 281
 282                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 283                                      "%s has changed ADMINSTRING to '%s'",
 284                                      get_oper_name(source_p), arg);
 285         }
 286 }
 287
 288 /* SET SPAMNUM */
 289 static void
 290 quote_spamnum(struct Client *source_p, const char *arg, int newval)
 291 {
 292         if(newval > 0)
 293         {
 294                 if(newval == 0)
 295                 {
 296                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 297                                              "%s has disabled ANTI_SPAMBOT", source_p->name);
 298                         GlobalSetOptions.spam_num = newval;
 299                         return;
 300                 }
 301                 if(newval < MIN_SPAM_NUM)
 302                 {
 303                         GlobalSetOptions.spam_num = MIN_SPAM_NUM;
 304                 }
 305                 else            /* if (newval < MIN_SPAM_NUM) */
 306                 {
 307                         GlobalSetOptions.spam_num = newval;
 308                 }
 309                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMNUM to %i",
 310                                      source_p->name, GlobalSetOptions.spam_num);
 311         }
 312         else
 313         {
 314                 sendto_one_notice(source_p, ":SPAMNUM is currently %i", GlobalSetOptions.spam_num);
 315         }
 316 }
 317
 318 /* SET SPAMTIME */
 319 static void
 320 quote_spamtime(struct Client *source_p, const char *arg, int newval)
 321 {
 322         if(newval > 0)
 323         {
 324                 if(newval < MIN_SPAM_TIME)
 325                 {
 326                         GlobalSetOptions.spam_time = MIN_SPAM_TIME;
 327                 }
 328                 else            /* if (newval < MIN_SPAM_TIME) */
 329                 {
 330                         GlobalSetOptions.spam_time = newval;
 331                 }
 332                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMTIME to %i",
 333                                      source_p->name, GlobalSetOptions.spam_time);
 334         }
 335         else
 336         {
 337                 sendto_one_notice(source_p, ":SPAMTIME is currently %i", GlobalSetOptions.spam_time);
 338         }
 339 }
 340
 341 /* this table is what splitmode may be set to */
 342 static const char *splitmode_values[] = {
 343         "OFF",
 344         "ON",
 345         "AUTO",
 346         NULL
 347 };
 348
 349 /* this table is what splitmode may be */
 350 static const char *splitmode_status[] = {
 351         "OFF",
 352         "AUTO (OFF)",
 353         "ON",
 354         "AUTO (ON)",
 355         NULL
 356 };
 357
 358 /* SET SPLITMODE */
 359 static void
 360 quote_splitmode(struct Client *source_p, const char *charval, int intval)
 361 {
 362         if(charval)
 363         {
 364                 int newval;
 365
 366                 for (newval = 0; splitmode_values[newval]; newval++)
 367                 {
 368                         if(!irccmp(splitmode_values[newval], charval))
 369                                 break;
 370                 }
 371
 372                 /* OFF */
 373                 if(newval == 0)
 374                 {
 375                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 376                                              "%s is disabling splitmode", get_oper_name(source_p));
 377
 378                         splitmode = 0;
 379                         splitchecking = 0;
 380
 381                         rb_event_delete(check_splitmode_ev);
 382                         check_splitmode_ev = NULL;
 383                 }
 384                 /* ON */
 385                 else if(newval == 1)
 386                 {
 387                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 388                                              "%s is enabling and activating splitmode",
 389                                              get_oper_name(source_p));
 390
 391                         splitmode = 1;
 392                         splitchecking = 0;
 393
 394                         /* we might be deactivating an automatic splitmode, so pull the event */
 395                         rb_event_delete(check_splitmode_ev);
 396                         check_splitmode_ev = NULL;
 397                 }
 398                 /* AUTO */
 399                 else if(newval == 2)
 400                 {
 401                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 402                                              "%s is enabling automatic splitmode",
 403                                              get_oper_name(source_p));
 404
 405                         splitchecking = 1;
 406                         check_splitmode(NULL);
 407                 }
 408         }
 409         else
 410                 /* if we add splitchecking to splitmode*2 we get a unique table to
 411                  * pull values back out of, splitmode can be four states - but you can
 412                  * only set to three, which means we cant use the same table --fl_
 413                  */
 414                 sendto_one_notice(source_p, ":SPLITMODE is currently %s",
 415                            splitmode_status[(splitchecking + (splitmode * 2))]);
 416 }
 417
 418 /* SET SPLITNUM */
 419 static void
 420 quote_splitnum(struct Client *source_p, const char *arg, int newval)
 421 {
 422         if(newval >= 0)
 423         {
 424                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 425                                      "%s has changed SPLITNUM to %i", source_p->name, newval);
 426                 split_servers = newval;
 427
 428                 if(splitchecking)
 429                         check_splitmode(NULL);
 430         }
 431         else
 432                 sendto_one_notice(source_p, ":SPLITNUM is currently %i", split_servers);
 433 }
 434
 435 /* SET SPLITUSERS */
 436 static void
 437 quote_splitusers(struct Client *source_p, const char *arg, int newval)
 438 {
 439         if(newval >= 0)
 440         {
 441                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 442                                      "%s has changed SPLITUSERS to %i", source_p->name, newval);
 443                 split_users = newval;
 444
 445                 if(splitchecking)
 446                         check_splitmode(NULL);
 447         }
 448         else
 449                 sendto_one_notice(source_p, ":SPLITUSERS is currently %i", split_users);
 450 }
 451
 452 /*
 453  * mo_set - SET command handler
 454  * set options while running
 455  */
 456 static int
 457 mo_set(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 458 {
 459         int newval;
 460         int i, n;
 461         const char *arg = NULL;
 462         const char *intarg = NULL;
 463
 464         if(parc > 1)
 465         {
 466                 /*
 467                  * Go through all the commands in set_cmd_table, until one is
 468                  * matched.  I realize strcmp() is more intensive than a numeric
 469                  * lookup, but at least it's better than a big-ass switch/case
 470                  * statement.
 471                  */
 472                 for (i = 0; set_cmd_table[i].handler; i++)
 473                 {
 474                         if(!irccmp(set_cmd_table[i].name, parv[1]))
 475                         {
 476                                 /*
 477                                  * Command found; now execute the code
 478                                  */
 479                                 n = 2;
 480
 481                                 if(set_cmd_table[i].wants_char)
 482                                 {
 483                                         arg = parv[n++];
 484                                 }
 485
 486                                 if(set_cmd_table[i].wants_int)
 487                                 {
 488                                         intarg = parv[n++];
 489                                 }
 490
 491                                 if((n - 1) > parc)
 492                                 {
 493                                         sendto_one_notice(source_p,
 494                                                    ":SET %s expects (\"%s%s\") args",
 495                                                    set_cmd_table[i].name,
 496                                                    (set_cmd_table[i].
 497                                                     wants_char ? "string, " : ""),
 498                                                    (set_cmd_table[i].
 499                                                     wants_char ? "int" : ""));
 500                                         return 0;
 501                                 }
 502
 503                                 if(parc <= 2)
 504                                 {
 505                                         arg = NULL;
 506                                         intarg = NULL;
 507                                 }
 508
 509                                 if(set_cmd_table[i].wants_int && (parc > 2))
 510                                 {
 511                                         if(intarg)
 512                                         {
 513                                                 if(!irccmp(intarg, "yes") || !irccmp(intarg, "on"))
 514                                                         newval = 1;
 515                                                 else if(!irccmp(intarg, "no")
 516                                                         || !irccmp(intarg, "off"))
 517                                                         newval = 0;
 518                                                 else
 519                                                         newval = atoi(intarg);
 520                                         }
 521                                         else
 522                                         {
 523                                                 newval = -1;
 524                                         }
 525
 526                                         if(newval < 0)
 527                                         {
 528                                                 sendto_one_notice(source_p,
 529                                                            ":Value less than 0 illegal for %s",
 530                                                            set_cmd_table[i].name);
 531
 532                                                 return 0;
 533                                         }
 534                                 }
 535                                 else
 536                                         newval = -1;
 537
 538                                 set_cmd_table[i].handler(source_p, arg, newval);
 539                                 return 0;
 540                         }
 541                 }
 542
 543                 /*
 544                  * Code here will be executed when a /QUOTE SET command is not
 545                  * found within set_cmd_table.
 546                  */
 547                 sendto_one_notice(source_p, ":Variable not found.");
 548                 return 0;
 549         }
 550
 551         list_quote_commands(source_p);
 552
 553         return 0;
 554 }