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 3161 2007-01-25 07:23:01Z nenolod $
  25  */
  26
  27 /* rewritten by jdc */
  28
  29 #include "stdinc.h"
  30 #include "client.h"
  31 #include "event.h"
  32 #include "irc_string.h"
  33 #include "sprintf_irc.h"
  34 #include "ircd.h"
  35 #include "numeric.h"
  36 #include "commio.h"
  37 #include "s_serv.h"
  38 #include "send.h"
  39 #include "common.h"
  40 #include "channel.h"
  41 #include "s_conf.h"
  42 #include "s_newconf.h"
  43 #include "msg.h"
  44 #include "parse.h"
  45 #include "modules.h"
  46
  47 static int mo_set(struct Client *, struct Client *, int, const char **);
  48
  49 struct Message set_msgtab = {
  50         "SET", 0, 0, 0, MFLG_SLOW,
  51         {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, mg_ignore, {mo_set, 0}}
  52 };
  53
  54 mapi_clist_av1 set_clist[] = { &set_msgtab, NULL };
  55 DECLARE_MODULE_AV1(set, NULL, NULL, set_clist, NULL, NULL, "$Revision: 3161 $");
  56
  57 /* Structure used for the SET table itself */
  58 struct SetStruct
  59 {
  60         const char *name;
  61         void (*handler) ();
  62         int wants_char;         /* 1 if it expects (char *, [int]) */
  63         int wants_int;          /* 1 if it expects ([char *], int) */
  64
  65         /* eg:  0, 1 == only an int arg
  66          * eg:  1, 1 == char and int args */
  67 };
  68
  69
  70 static void quote_adminstring(struct Client *, const char *);
  71 static void quote_autoconn(struct Client *, char *, int);
  72 static void quote_autoconnall(struct Client *, int);
  73 static void quote_floodcount(struct Client *, int);
  74 static void quote_identtimeout(struct Client *, int);
  75 static void quote_idletime(struct Client *, int);
  76 static void quote_max(struct Client *, int);
  77 static void quote_operstring(struct Client *, const char *);
  78 static void quote_spamnum(struct Client *, int);
  79 static void quote_spamtime(struct Client *, int);
  80 static void quote_splitmode(struct Client *, char *);
  81 static void quote_splitnum(struct Client *, int);
  82 static void quote_splitusers(struct Client *, int);
  83 static void list_quote_commands(struct Client *);
  84
  85
  86 /*
  87  * If this ever needs to be expanded to more than one arg of each
  88  * type, want_char/want_int could be the count of the arguments,
  89  * instead of just a boolean flag...
  90  *
  91  * -davidt
  92  */
  93
  94 static struct SetStruct set_cmd_table[] = {
  95         /* name               function      string arg  int arg */
  96         /* -------------------------------------------------------- */
  97         {"ADMINSTRING", quote_adminstring,      1,      0       },
  98         {"AUTOCONN",    quote_autoconn,         1,      1       },
  99         {"AUTOCONNALL", quote_autoconnall,      0,      1       },
 100         {"FLOODCOUNT",  quote_floodcount,       0,      1       },
 101         {"IDENTTIMEOUT", quote_identtimeout,    0,      1       },
 102         {"IDLETIME",    quote_idletime,         0,      1       },
 103         {"MAX",         quote_max,              0,      1       },
 104         {"MAXCLIENTS",  quote_max,              0,      1       },
 105         {"OPERSTRING",  quote_operstring,       1,      0       },
 106         {"SPAMNUM",     quote_spamnum,          0,      1       },
 107         {"SPAMTIME",    quote_spamtime,         0,      1       },
 108         {"SPLITMODE",   quote_splitmode,        1,      0       },
 109         {"SPLITNUM",    quote_splitnum,         0,      1       },
 110         {"SPLITUSERS",  quote_splitusers,       0,      1       },
 111         /* -------------------------------------------------------- */
 112         {(char *) 0, (void (*)()) 0, 0, 0}
 113 };
 114
 115
 116 /*
 117  * list_quote_commands() sends the client all the available commands.
 118  * Four to a line for now.
 119  */
 120 static void
 121 list_quote_commands(struct Client *source_p)
 122 {
 123         int i;
 124         int j = 0;
 125         const char *names[4];
 126
 127         sendto_one_notice(source_p, ":Available QUOTE SET commands:");
 128
 129         names[0] = names[1] = names[2] = names[3] = "";
 130
 131         for (i = 0; set_cmd_table[i].handler; i++)
 132         {
 133                 names[j++] = set_cmd_table[i].name;
 134
 135                 if(j > 3)
 136                 {
 137                         sendto_one_notice(source_p, ":%s %s %s %s",
 138                                    names[0], names[1], names[2], names[3]);
 139                         j = 0;
 140                         names[0] = names[1] = names[2] = names[3] = "";
 141                 }
 142
 143         }
 144         if(j)
 145                 sendto_one_notice(source_p, ":%s %s %s %s",
 146                            names[0], names[1], names[2], names[3]);
 147 }
 148
 149 /* SET AUTOCONN */
 150 static void
 151 quote_autoconn(struct Client *source_p, char *arg, int newval)
 152 {
 153         set_server_conf_autoconn(source_p, arg, newval);
 154 }
 155
 156 /* SET AUTOCONNALL */
 157 static void
 158 quote_autoconnall(struct Client *source_p, int newval)
 159 {
 160         if(newval >= 0)
 161         {
 162                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed AUTOCONNALL to %i",
 163                                      source_p->name, newval);
 164
 165                 GlobalSetOptions.autoconn = newval;
 166         }
 167         else
 168         {
 169                 sendto_one_notice(source_p, ":AUTOCONNALL is currently %i",
 170                            GlobalSetOptions.autoconn);
 171         }
 172 }
 173
 174
 175 /* SET FLOODCOUNT */
 176 static void
 177 quote_floodcount(struct Client *source_p, int newval)
 178 {
 179         if(newval >= 0)
 180         {
 181                 GlobalSetOptions.floodcount = newval;
 182                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 183                                      "%s has changed FLOODCOUNT to %i", source_p->name,
 184                                      GlobalSetOptions.floodcount);
 185         }
 186         else
 187         {
 188                 sendto_one_notice(source_p, ":FLOODCOUNT is currently %i",
 189                            GlobalSetOptions.floodcount);
 190         }
 191 }
 192
 193 /* SET IDENTTIMEOUT */
 194 static void
 195 quote_identtimeout(struct Client *source_p, int newval)
 196 {
 197         if(!IsOperAdmin(source_p))
 198         {
 199                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 200                            me.name, source_p->name, "admin");
 201                 return;
 202         }
 203
 204         if(newval > 0)
 205         {
 206                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 207                                      "%s has changed IDENTTIMEOUT to %d",
 208                                      get_oper_name(source_p), newval);
 209                 GlobalSetOptions.ident_timeout = newval;
 210         }
 211         else
 212                 sendto_one_notice(source_p, ":IDENTTIMEOUT is currently %d",
 213                            GlobalSetOptions.ident_timeout);
 214 }
 215
 216 /* SET IDLETIME */
 217 static void
 218 quote_idletime(struct Client *source_p, int newval)
 219 {
 220         if(newval >= 0)
 221         {
 222                 if(newval == 0)
 223                 {
 224                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 225                                              "%s has disabled idletime checking", source_p->name);
 226                         GlobalSetOptions.idletime = 0;
 227                 }
 228                 else
 229                 {
 230                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 231                                              "%s has changed IDLETIME to %i",
 232                                              source_p->name, newval);
 233                         GlobalSetOptions.idletime = (newval * 60);
 234                 }
 235         }
 236         else
 237         {
 238                 sendto_one_notice(source_p, ":IDLETIME is currently %i",
 239                         GlobalSetOptions.idletime / 60);
 240         }
 241 }
 242
 243 /* SET MAX */
 244 static void
 245 quote_max(struct Client *source_p, int newval)
 246 {
 247         if(newval > 0)
 248         {
 249                 if(newval > MASTER_MAX)
 250                 {
 251                         sendto_one_notice(source_p, ":You cannot set MAXCLIENTS to > MASTER_MAX (%d)",
 252                                    MASTER_MAX);
 253                         return;
 254                 }
 255
 256                 if(newval < 32)
 257                 {
 258                         sendto_one_notice(source_p, ":You cannot set MAXCLIENTS to < 32 (%d:%d)",
 259                                    GlobalSetOptions.maxclients, highest_fd);
 260                         return;
 261                 }
 262
 263                 GlobalSetOptions.maxclients = newval;
 264
 265                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 266                                      "%s!%s@%s set new MAXCLIENTS to %d (%lu current)",
 267                                      source_p->name, source_p->username, source_p->host,
 268                                      GlobalSetOptions.maxclients,
 269                                      dlink_list_length(&lclient_list));
 270
 271                 return;
 272         }
 273         else
 274         {
 275                 sendto_one_notice(source_p, ":Current Maxclients = %d (%lu)",
 276                            GlobalSetOptions.maxclients, dlink_list_length(&lclient_list));
 277         }
 278 }
 279
 280 /* SET OPERSTRING */
 281 static void
 282 quote_operstring(struct Client *source_p, const char *arg)
 283 {
 284         if(EmptyString(arg))
 285         {
 286                 sendto_one_notice(source_p, ":OPERSTRING is currently '%s'", GlobalSetOptions.operstring);
 287         }
 288         else
 289         {
 290                 strlcpy(GlobalSetOptions.operstring, arg,
 291                         sizeof(GlobalSetOptions.operstring));
 292
 293                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 294                                      "%s has changed OPERSTRING to '%s'",
 295                                      get_oper_name(source_p), arg);
 296         }
 297 }
 298
 299 /* SET ADMINSTRING */
 300 static void
 301 quote_adminstring(struct Client *source_p, const char *arg)
 302 {
 303         if(EmptyString(arg))
 304         {
 305                 sendto_one_notice(source_p, ":ADMINSTRING is currently '%s'", GlobalSetOptions.adminstring);
 306         }
 307         else
 308         {
 309                 strlcpy(GlobalSetOptions.adminstring, arg,
 310                         sizeof(GlobalSetOptions.adminstring));
 311
 312                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 313                                      "%s has changed ADMINSTRING to '%s'",
 314                                      get_oper_name(source_p), arg);
 315         }
 316 }
 317
 318 /* SET SPAMNUM */
 319 static void
 320 quote_spamnum(struct Client *source_p, int newval)
 321 {
 322         if(newval > 0)
 323         {
 324                 if(newval == 0)
 325                 {
 326                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 327                                              "%s has disabled ANTI_SPAMBOT", source_p->name);
 328                         GlobalSetOptions.spam_num = newval;
 329                         return;
 330                 }
 331                 if(newval < MIN_SPAM_NUM)
 332                 {
 333                         GlobalSetOptions.spam_num = MIN_SPAM_NUM;
 334                 }
 335                 else            /* if (newval < MIN_SPAM_NUM) */
 336                 {
 337                         GlobalSetOptions.spam_num = newval;
 338                 }
 339                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMNUM to %i",
 340                                      source_p->name, GlobalSetOptions.spam_num);
 341         }
 342         else
 343         {
 344                 sendto_one_notice(source_p, ":SPAMNUM is currently %i", GlobalSetOptions.spam_num);
 345         }
 346 }
 347
 348 /* SET SPAMTIME */
 349 static void
 350 quote_spamtime(struct Client *source_p, int newval)
 351 {
 352         if(newval > 0)
 353         {
 354                 if(newval < MIN_SPAM_TIME)
 355                 {
 356                         GlobalSetOptions.spam_time = MIN_SPAM_TIME;
 357                 }
 358                 else            /* if (newval < MIN_SPAM_TIME) */
 359                 {
 360                         GlobalSetOptions.spam_time = newval;
 361                 }
 362                 sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s has changed SPAMTIME to %i",
 363                                      source_p->name, GlobalSetOptions.spam_time);
 364         }
 365         else
 366         {
 367                 sendto_one_notice(source_p, ":SPAMTIME is currently %i", GlobalSetOptions.spam_time);
 368         }
 369 }
 370
 371 /* this table is what splitmode may be set to */
 372 static const char *splitmode_values[] = {
 373         "OFF",
 374         "ON",
 375         "AUTO",
 376         NULL
 377 };
 378
 379 /* this table is what splitmode may be */
 380 static const char *splitmode_status[] = {
 381         "OFF",
 382         "AUTO (OFF)",
 383         "ON",
 384         "AUTO (ON)",
 385         NULL
 386 };
 387
 388 /* SET SPLITMODE */
 389 static void
 390 quote_splitmode(struct Client *source_p, char *charval)
 391 {
 392         if(charval)
 393         {
 394                 int newval;
 395
 396                 for (newval = 0; splitmode_values[newval]; newval++)
 397                 {
 398                         if(!irccmp(splitmode_values[newval], charval))
 399                                 break;
 400                 }
 401
 402                 /* OFF */
 403                 if(newval == 0)
 404                 {
 405                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 406                                              "%s is disabling splitmode", get_oper_name(source_p));
 407
 408                         splitmode = 0;
 409                         splitchecking = 0;
 410
 411                         eventDelete(check_splitmode, NULL);
 412                 }
 413                 /* ON */
 414                 else if(newval == 1)
 415                 {
 416                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 417                                              "%s is enabling and activating splitmode",
 418                                              get_oper_name(source_p));
 419
 420                         splitmode = 1;
 421                         splitchecking = 0;
 422
 423                         /* we might be deactivating an automatic splitmode, so pull the event */
 424                         eventDelete(check_splitmode, NULL);
 425                 }
 426                 /* AUTO */
 427                 else if(newval == 2)
 428                 {
 429                         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 430                                              "%s is enabling automatic splitmode",
 431                                              get_oper_name(source_p));
 432
 433                         splitchecking = 1;
 434                         check_splitmode(NULL);
 435                 }
 436         }
 437         else
 438                 /* if we add splitchecking to splitmode*2 we get a unique table to
 439                  * pull values back out of, splitmode can be four states - but you can
 440                  * only set to three, which means we cant use the same table --fl_
 441                  */
 442                 sendto_one_notice(source_p, ":SPLITMODE is currently %s",
 443                            splitmode_status[(splitchecking + (splitmode * 2))]);
 444 }
 445
 446 /* SET SPLITNUM */
 447 static void
 448 quote_splitnum(struct Client *source_p, int newval)
 449 {
 450         if(newval >= 0)
 451         {
 452                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 453                                      "%s has changed SPLITNUM to %i", source_p->name, newval);
 454                 split_servers = newval;
 455
 456                 if(splitchecking)
 457                         check_splitmode(NULL);
 458         }
 459         else
 460                 sendto_one_notice(source_p, ":SPLITNUM is currently %i", split_servers);
 461 }
 462
 463 /* SET SPLITUSERS */
 464 static void
 465 quote_splitusers(struct Client *source_p, int newval)
 466 {
 467         if(newval >= 0)
 468         {
 469                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 470                                      "%s has changed SPLITUSERS to %i", source_p->name, newval);
 471                 split_users = newval;
 472
 473                 if(splitchecking)
 474                         check_splitmode(NULL);
 475         }
 476         else
 477                 sendto_one_notice(source_p, ":SPLITUSERS is currently %i", split_users);
 478 }
 479
 480 /*
 481  * mo_set - SET command handler
 482  * set options while running
 483  */
 484 static int
 485 mo_set(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 486 {
 487         int newval;
 488         int i, n;
 489         const char *arg = NULL;
 490         const char *intarg = NULL;
 491
 492         if(parc > 1)
 493         {
 494                 /*
 495                  * Go through all the commands in set_cmd_table, until one is
 496                  * matched.  I realize strcmp() is more intensive than a numeric
 497                  * lookup, but at least it's better than a big-ass switch/case
 498                  * statement.
 499                  */
 500                 for (i = 0; set_cmd_table[i].handler; i++)
 501                 {
 502                         if(!irccmp(set_cmd_table[i].name, parv[1]))
 503                         {
 504                                 /*
 505                                  * Command found; now execute the code
 506                                  */
 507                                 n = 2;
 508
 509                                 if(set_cmd_table[i].wants_char)
 510                                 {
 511                                         arg = parv[n++];
 512                                 }
 513
 514                                 if(set_cmd_table[i].wants_int)
 515                                 {
 516                                         intarg = parv[n++];
 517                                 }
 518
 519                                 if((n - 1) > parc)
 520                                 {
 521                                         sendto_one_notice(source_p,
 522                                                    ":SET %s expects (\"%s%s\") args",
 523                                                    set_cmd_table[i].name,
 524                                                    (set_cmd_table[i].
 525                                                     wants_char ? "string, " : ""),
 526                                                    (set_cmd_table[i].
 527                                                     wants_char ? "int" : ""));
 528                                         return 0;
 529                                 }
 530
 531                                 if(parc <= 2)
 532                                 {
 533                                         arg = NULL;
 534                                         intarg = NULL;
 535                                 }
 536
 537                                 if(set_cmd_table[i].wants_int && (parc > 2))
 538                                 {
 539                                         if(intarg)
 540                                         {
 541                                                 if(!irccmp(intarg, "yes") || !irccmp(intarg, "on"))
 542                                                         newval = 1;
 543                                                 else if(!irccmp(intarg, "no")
 544                                                         || !irccmp(intarg, "off"))
 545                                                         newval = 0;
 546                                                 else
 547                                                         newval = atoi(intarg);
 548                                         }
 549                                         else
 550                                         {
 551                                                 newval = -1;
 552                                         }
 553
 554                                         if(newval < 0)
 555                                         {
 556                                                 sendto_one_notice(source_p,
 557                                                            ":Value less than 0 illegal for %s",
 558                                                            set_cmd_table[i].name);
 559
 560                                                 return 0;
 561                                         }
 562                                 }
 563                                 else
 564                                         newval = -1;
 565
 566                                 if(set_cmd_table[i].wants_char)
 567                                 {
 568                                         if(set_cmd_table[i].wants_int)
 569                                                 set_cmd_table[i].handler(source_p, arg, newval);
 570                                         else
 571                                                 set_cmd_table[i].handler(source_p, arg);
 572                                         return 0;
 573                                 }
 574                                 else
 575                                 {
 576                                         if(set_cmd_table[i].wants_int)
 577                                                 set_cmd_table[i].handler(source_p, newval);
 578                                         else
 579                                                 /* Just in case someone actually wants a
 580                                                  * set function that takes no args.. *shrug* */
 581                                                 set_cmd_table[i].handler(source_p);
 582                                         return 0;
 583                                 }
 584                         }
 585                 }
 586
 587                 /*
 588                  * Code here will be executed when a /QUOTE SET command is not
 589                  * found within set_cmd_table.
 590                  */
 591                 sendto_one_notice(source_p, ":Variable not found.");
 592                 return 0;
 593         }
 594
 595         list_quote_commands(source_p);
 596
 597         return 0;
 598 }