modules/m_rehash.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_rehash.c: Re-reads the configuration file.
   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_rehash.c 3161 2007-01-25 07:23:01Z nenolod $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "client.h"
  29 #include "channel.h"
  30 #include "common.h"
  31 #include "match.h"
  32 #include "ircd.h"
  33 #include "s_serv.h"
  34 #include "numeric.h"
  35 #include "s_conf.h"
  36 #include "s_newconf.h"
  37 #include "logger.h"
  38 #include "send.h"
  39 #include "msg.h"
  40 #include "parse.h"
  41 #include "modules.h"
  42 #include "hostmask.h"
  43 #include "reject.h"
  44 #include "hash.h"
  45 #include "cache.h"
  46 #include "irc_radixtree.h"
  47 #include "sslproc.h"
  48
  49 static int mo_rehash(struct Client *, struct Client *, int, const char **);
  50 static int me_rehash(struct Client *, struct Client *, int, const char **);
  51
  52 struct Message rehash_msgtab = {
  53         "REHASH", 0, 0, 0, MFLG_SLOW,
  54         {mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_rehash, 0}, {mo_rehash, 0}}
  55 };
  56
  57 mapi_clist_av1 rehash_clist[] = { &rehash_msgtab, NULL };
  58 DECLARE_MODULE_AV1(rehash, NULL, NULL, rehash_clist, NULL, NULL, "$Revision: 3161 $");
  59
  60 struct hash_commands
  61 {
  62         const char *cmd;
  63         void (*handler) (struct Client * source_p);
  64 };
  65
  66 static void
  67 rehash_bans_loc(struct Client *source_p)
  68 {
  69         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is rehashing bans",
  70                                 get_oper_name(source_p));
  71         if (!MyConnect(source_p))
  72                 remote_rehash_oper_p = source_p;
  73
  74         rehash_bans(0);
  75 }
  76
  77 static void
  78 rehash_dns(struct Client *source_p)
  79 {
  80         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is rehashing DNS",
  81                              get_oper_name(source_p));
  82         if (!MyConnect(source_p))
  83                 remote_rehash_oper_p = source_p;
  84
  85         /* reread /etc/resolv.conf and reopen res socket */
  86         restart_authd();
  87 }
  88
  89 static void
  90 rehash_ssld(struct Client *source_p)
  91 {
  92         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is restarting ssld",
  93                                 get_oper_name(source_p));
  94
  95         restart_ssld();
  96 }
  97
  98 static void
  99 rehash_motd(struct Client *source_p)
 100 {
 101         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 102                              "%s is forcing re-reading of MOTD file",
 103                              get_oper_name(source_p));
 104         if (!MyConnect(source_p))
 105                 remote_rehash_oper_p = source_p;
 106
 107         cache_user_motd();
 108 }
 109
 110 static void
 111 rehash_omotd(struct Client *source_p)
 112 {
 113         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 114                              "%s is forcing re-reading of OPER MOTD file",
 115                              get_oper_name(source_p));
 116         if (!MyConnect(source_p))
 117                 remote_rehash_oper_p = source_p;
 118
 119         free_cachefile(oper_motd);
 120         oper_motd = cache_file(OPATH, "opers.motd", 0);
 121 }
 122
 123 static void
 124 rehash_tklines(struct Client *source_p)
 125 {
 126         struct ConfItem *aconf;
 127         rb_dlink_node *ptr, *next_ptr;
 128         int i;
 129
 130         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp klines",
 131                                 get_oper_name(source_p));
 132         if (!MyConnect(source_p))
 133                 remote_rehash_oper_p = source_p;
 134
 135         for(i = 0; i < LAST_TEMP_TYPE; i++)
 136         {
 137                 RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_klines[i].head)
 138                 {
 139                         aconf = ptr->data;
 140
 141                         delete_one_address_conf(aconf->host, aconf);
 142                         rb_dlinkDestroy(ptr, &temp_klines[i]);
 143                 }
 144         }
 145 }
 146
 147 static void
 148 rehash_tdlines(struct Client *source_p)
 149 {
 150         struct ConfItem *aconf;
 151         rb_dlink_node *ptr, *next_ptr;
 152         int i;
 153
 154         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp dlines",
 155                                 get_oper_name(source_p));
 156         if (!MyConnect(source_p))
 157                 remote_rehash_oper_p = source_p;
 158
 159         for(i = 0; i < LAST_TEMP_TYPE; i++)
 160         {
 161                 RB_DLINK_FOREACH_SAFE(ptr, next_ptr, temp_dlines[i].head)
 162                 {
 163                         aconf = ptr->data;
 164
 165                         delete_one_address_conf(aconf->host, aconf);
 166                         rb_dlinkDestroy(ptr, &temp_dlines[i]);
 167                 }
 168         }
 169 }
 170
 171 static void
 172 rehash_txlines(struct Client *source_p)
 173 {
 174         struct ConfItem *aconf;
 175         rb_dlink_node *ptr;
 176         rb_dlink_node *next_ptr;
 177
 178         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp xlines",
 179                                 get_oper_name(source_p));
 180         if (!MyConnect(source_p))
 181                 remote_rehash_oper_p = source_p;
 182
 183         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, xline_conf_list.head)
 184         {
 185                 aconf = ptr->data;
 186
 187                 if(!aconf->hold || aconf->lifetime)
 188                         continue;
 189
 190                 free_conf(aconf);
 191                 rb_dlinkDestroy(ptr, &xline_conf_list);
 192         }
 193 }
 194
 195 static void
 196 rehash_tresvs(struct Client *source_p)
 197 {
 198         struct ConfItem *aconf;
 199         struct irc_radixtree_iteration_state iter;
 200         rb_dlink_node *ptr;
 201         rb_dlink_node *next_ptr;
 202         int i;
 203
 204         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing temp resvs",
 205                                 get_oper_name(source_p));
 206         if (!MyConnect(source_p))
 207                 remote_rehash_oper_p = source_p;
 208
 209         IRC_RADIXTREE_FOREACH(aconf, &iter, resv_tree)
 210         {
 211                 if(!aconf->hold || aconf->lifetime)
 212                         continue;
 213
 214                 irc_radixtree_delete(resv_tree, aconf->host);
 215                 free_conf(aconf);
 216         }
 217
 218         RB_DLINK_FOREACH_SAFE(ptr, next_ptr, resv_conf_list.head)
 219         {
 220                 aconf = ptr->data;
 221
 222                 if(!aconf->hold || aconf->lifetime)
 223                         continue;
 224
 225                 free_conf(aconf);
 226                 rb_dlinkDestroy(ptr, &resv_conf_list);
 227         }
 228 }
 229
 230 static void
 231 rehash_rejectcache(struct Client *source_p)
 232 {
 233         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing reject cache",
 234                                 get_oper_name(source_p));
 235         if (!MyConnect(source_p))
 236                 remote_rehash_oper_p = source_p;
 237         flush_reject();
 238
 239 }
 240
 241 static void
 242 rehash_throttles(struct Client *source_p)
 243 {
 244         sendto_realops_snomask(SNO_GENERAL, L_ALL, "%s is clearing throttles",
 245                                 get_oper_name(source_p));
 246         if (!MyConnect(source_p))
 247                 remote_rehash_oper_p = source_p;
 248         flush_throttle();
 249
 250 }
 251
 252 static void
 253 rehash_help(struct Client *source_p)
 254 {
 255         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 256                              "%s is forcing re-reading of HELP files",
 257                              get_oper_name(source_p));
 258         if (!MyConnect(source_p))
 259                 remote_rehash_oper_p = source_p;
 260         load_help();
 261 }
 262
 263 static void
 264 rehash_nickdelay(struct Client *source_p)
 265 {
 266         struct nd_entry *nd;
 267         rb_dlink_node *ptr;
 268         rb_dlink_node *safe_ptr;
 269
 270         sendto_realops_snomask(SNO_GENERAL, L_ALL,
 271                              "%s is clearing the nick delay table",
 272                              get_oper_name(source_p));
 273         if (!MyConnect(source_p))
 274                 remote_rehash_oper_p = source_p;
 275
 276         RB_DLINK_FOREACH_SAFE(ptr, safe_ptr, nd_list.head)
 277         {
 278                 nd = ptr->data;
 279
 280                 free_nd_entry(nd);
 281         }
 282 }
 283
 284 /* *INDENT-OFF* */
 285 static struct hash_commands rehash_commands[] =
 286 {
 287         {"BANS",        rehash_bans_loc         },
 288         {"DNS",         rehash_dns              },
 289         {"SSLD",        rehash_ssld             },
 290         {"MOTD",        rehash_motd             },
 291         {"OMOTD",       rehash_omotd            },
 292         {"TKLINES",     rehash_tklines          },
 293         {"TDLINES",     rehash_tdlines          },
 294         {"TXLINES",     rehash_txlines          },
 295         {"TRESVS",      rehash_tresvs           },
 296         {"REJECTCACHE", rehash_rejectcache      },
 297         {"THROTTLES",   rehash_throttles        },
 298         {"HELP",        rehash_help             },
 299         {"NICKDELAY",   rehash_nickdelay        },
 300         {NULL,          NULL                    }
 301 };
 302 /* *INDENT-ON* */
 303
 304 static void
 305 do_rehash(struct Client *source_p, const char *type)
 306 {
 307         if (type != NULL)
 308         {
 309                 int x;
 310                 char cmdbuf[100];
 311
 312                 for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL;
 313                      x++)
 314                 {
 315                         if(irccmp(type, rehash_commands[x].cmd) == 0)
 316                         {
 317                                 sendto_one(source_p, form_str(RPL_REHASHING), me.name,
 318                                            source_p->name, rehash_commands[x].cmd);
 319                                 ilog(L_MAIN, "REHASH %s From %s[%s]", type,
 320                                      get_oper_name(source_p), source_p->sockhost);
 321                                 rehash_commands[x].handler(source_p);
 322                                 remote_rehash_oper_p = NULL;
 323                                 return;
 324                         }
 325                 }
 326
 327                 /* We are still here..we didn't match */
 328                 cmdbuf[0] = '\0';
 329                 for (x = 0; rehash_commands[x].cmd != NULL && rehash_commands[x].handler != NULL;
 330                      x++)
 331                 {
 332                         rb_strlcat(cmdbuf, " ", sizeof(cmdbuf));
 333                         rb_strlcat(cmdbuf, rehash_commands[x].cmd, sizeof(cmdbuf));
 334                 }
 335                 sendto_one_notice(source_p, ":rehash one of:%s", cmdbuf);
 336         }
 337         else
 338         {
 339                 sendto_one(source_p, form_str(RPL_REHASHING), me.name, source_p->name,
 340                            ConfigFileEntry.configfile);
 341                 sendto_realops_snomask(SNO_GENERAL, L_ALL,
 342                                      "%s is rehashing server config file", get_oper_name(source_p));
 343                 if (!MyConnect(source_p))
 344                         remote_rehash_oper_p = source_p;
 345                 ilog(L_MAIN, "REHASH From %s[%s]", get_oper_name(source_p),
 346                      source_p->sockhost);
 347                 rehash(0);
 348                 remote_rehash_oper_p = NULL;
 349         }
 350 }
 351
 352 /*
 353  * mo_rehash - REHASH message handler
 354  *
 355  * parv[1] = rehash type or destination
 356  * parv[2] = destination
 357  */
 358 static int
 359 mo_rehash(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 360 {
 361         const char *type = NULL, *target_server = NULL;
 362
 363         if(!IsOperRehash(source_p))
 364         {
 365                 sendto_one(source_p, form_str(ERR_NOPRIVS),
 366                            me.name, source_p->name, "rehash");
 367                 return 0;
 368         }
 369
 370         if (parc > 2)
 371                 type = parv[1], target_server = parv[2];
 372         else if (parc > 1 && (strchr(parv[1], '.') || strchr(parv[1], '?') || strchr(parv[1], '*')))
 373                 type = NULL, target_server = parv[1];
 374         else if (parc > 1)
 375                 type = parv[1], target_server = NULL;
 376         else
 377                 type = NULL, target_server = NULL;
 378
 379         if (target_server != NULL)
 380         {
 381                 if(!IsOperRemoteBan(source_p))
 382                 {
 383                         sendto_one(source_p, form_str(ERR_NOPRIVS),
 384                                 me.name, source_p->name, "remoteban");
 385                         return 0;
 386                 }
 387                 sendto_match_servs(source_p, target_server,
 388                                 CAP_ENCAP, NOCAPS,
 389                                 "ENCAP %s REHASH %s",
 390                                 target_server, type != NULL ? type : "");
 391                 if (match(target_server, me.name) == 0)
 392                         return 0;
 393         }
 394
 395         do_rehash(source_p, type);
 396
 397         return 0;
 398 }
 399
 400 static int
 401 me_rehash(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
 402 {
 403
 404         if (!IsPerson(source_p))
 405                 return 0;
 406
 407         if (!find_shared_conf(source_p->username, source_p->host,
 408                                 source_p->servptr->name, SHARED_REHASH))
 409                 return 0;
 410
 411         do_rehash(source_p, parc > 1 ? parv[1] : NULL);
 412
 413         return 0;
 414 }