src/ngircd/irc-oper.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2008 Alexander Barton (alex@barton.de)
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  */
  11
  12
  13 #include "portab.h"
  14
  15 /**
  16  * @file
  17  * IRC operator commands
  18  */
  19
  20 #include "imp.h"
  21 #include <assert.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <signal.h>
  26
  27 #include "ngircd.h"
  28 #include "conn-func.h"
  29 #include "conf.h"
  30 #include "channel.h"
  31 #include "irc-write.h"
  32 #include "log.h"
  33 #include "match.h"
  34 #include "messages.h"
  35 #include "parse.h"
  36 #include "op.h"
  37
  38 #include <exp.h>
  39 #include "irc-oper.h"
  40
  41
  42 /**
  43  * Handle invalid received OPER command.
  44  * Log OPER attempt and send error message to client.
  45  */
  46 static bool
  47 Bad_OperPass(CLIENT *Client, char *errtoken, char *errmsg)
  48 {
  49         Log(LOG_WARNING, "Got invalid OPER from \"%s\": \"%s\" -- %s",
  50             Client_Mask(Client), errtoken, errmsg);
  51         IRC_SetPenalty(Client, 3);
  52         return IRC_WriteStrClient(Client, ERR_PASSWDMISMATCH_MSG,
  53                                   Client_ID(Client));
  54 } /* Bad_OperPass */
  55
  56
  57 GLOBAL bool
  58 IRC_OPER( CLIENT *Client, REQUEST *Req )
  59 {
  60         struct Conf_Oper *op;
  61         size_t len, i;
  62
  63         assert( Client != NULL );
  64         assert( Req != NULL );
  65
  66         if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  67
  68         len = array_length(&Conf_Opers, sizeof(*op));
  69         op = array_start(&Conf_Opers);
  70         for (i = 0; i < len && strcmp(op[i].name, Req->argv[0]); i++)
  71                 ;
  72         if (i >= len)
  73                 return Bad_OperPass(Client, Req->argv[0], "not configured");
  74
  75         if (strcmp(op[i].pwd, Req->argv[1]) != 0)
  76                 return Bad_OperPass(Client, op[i].name, "bad password");
  77
  78         if (op[i].mask && (!Match(op[i].mask, Client_Mask(Client))))
  79                 return Bad_OperPass(Client, op[i].mask, "hostmask check failed");
  80
  81         if( ! Client_HasMode( Client, 'o' ))
  82         {
  83                 Client_ModeAdd( Client, 'o' );
  84                 if( ! IRC_WriteStrClient( Client, "MODE %s :+o", Client_ID( Client ))) return DISCONNECTED;
  85                 IRC_WriteStrServersPrefix( NULL, Client, "MODE %s :+o", Client_ID( Client ));
  86         }
  87
  88         if( ! Client_OperByMe( Client )) Log( LOG_NOTICE|LOG_snotice, "Got valid OPER from \"%s\", user is an IRC operator now.", Client_Mask( Client ));
  89
  90         Client_SetOperByMe( Client, true);
  91         return IRC_WriteStrClient( Client, RPL_YOUREOPER_MSG, Client_ID( Client ));
  92 } /* IRC_OPER */
  93
  94
  95 GLOBAL bool
  96 IRC_DIE(CLIENT * Client, REQUEST * Req)
  97 {
  98         /* Shut down server */
  99
 100         CONN_ID c;
 101         CLIENT *cl;
 102
 103         assert(Client != NULL);
 104         assert(Req != NULL);
 105
 106         if (!Op_Check(Client, Req))
 107                 return Op_NoPrivileges(Client, Req);
 108
 109         /* Bad number of parameters? */
 110 #ifdef STRICT_RFC
 111         if (Req->argc != 0)
 112 #else
 113         if (Req->argc > 1)
 114 #endif
 115                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 116                                           Client_ID(Client), Req->command);
 117
 118         /* Is a message given? */
 119         if (Req->argc > 0) {
 120                 c = Conn_First();
 121                 while (c != NONE) {
 122                         cl = Conn_GetClient(c);
 123                         if (Client_Type(cl) == CLIENT_USER)
 124                                 IRC_WriteStrClient(cl, "NOTICE %s :%s",
 125                                                 Client_ID(cl), Req->argv[0]);
 126                         c = Conn_Next(c);
 127                 }
 128         }
 129
 130         Log(LOG_NOTICE | LOG_snotice, "Got DIE command from \"%s\" ...",
 131             Client_Mask(Client));
 132         NGIRCd_SignalQuit = true;
 133
 134         return CONNECTED;
 135 } /* IRC_DIE */
 136
 137
 138 GLOBAL bool
 139 IRC_REHASH( CLIENT *Client, REQUEST *Req )
 140 {
 141         /* Reload configuration file */
 142
 143         assert( Client != NULL );
 144         assert( Req != NULL );
 145
 146         if (!Op_Check(Client, Req))
 147                 return Op_NoPrivileges(Client, Req);
 148
 149         /* Bad number of parameters? */
 150         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 151
 152         Log( LOG_NOTICE|LOG_snotice, "Got REHASH command from \"%s\" ...", Client_Mask( Client ));
 153         raise(SIGHUP);
 154
 155         return CONNECTED;
 156 } /* IRC_REHASH */
 157
 158
 159 GLOBAL bool
 160 IRC_RESTART( CLIENT *Client, REQUEST *Req )
 161 {
 162         /* Restart IRC server (fork a new process) */
 163
 164         assert( Client != NULL );
 165         assert( Req != NULL );
 166
 167         if (!Op_Check(Client, Req))
 168                 return Op_NoPrivileges(Client, Req);
 169
 170         /* Bad number of parameters? */
 171         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 172
 173         Log( LOG_NOTICE|LOG_snotice, "Got RESTART command from \"%s\" ...", Client_Mask( Client ));
 174         NGIRCd_SignalRestart = true;
 175         return CONNECTED;
 176 } /* IRC_RESTART */
 177
 178
 179 /**
 180  * Connect configured or new server.
 181  */
 182 GLOBAL bool
 183 IRC_CONNECT(CLIENT * Client, REQUEST * Req)
 184 {
 185         CLIENT *from, *target;
 186
 187         assert(Client != NULL);
 188         assert(Req != NULL);
 189
 190         if (Client_Type(Client) != CLIENT_SERVER
 191             && !Client_HasMode(Client, 'o'))
 192                 return Op_NoPrivileges(Client, Req);
 193
 194         /* Bad number of parameters? */
 195         if (Req->argc != 1 && Req->argc != 2 && Req->argc != 3 &&
 196             Req->argc != 5 && Req->argc != 6)
 197                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 198                                           Client_ID(Client), Req->command);
 199
 200         /* Invalid port number? */
 201         if ((Req->argc > 1) && atoi(Req->argv[1]) < 1)
 202                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 203                                           Client_ID(Client), Req->command);
 204
 205         from = Client;
 206         target = Client_ThisServer();
 207
 208         if (Req->argc == 3 || Req->argc == 6) {
 209                 /* This CONNECT has a target parameter */
 210                 if (Client_Type(Client) == CLIENT_SERVER && Req->prefix)
 211                         from = Client_Search(Req->prefix);
 212                 if (! from)
 213                         return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
 214                                         Client_ID(Client), Req->prefix);
 215
 216                 target = (Req->argc == 3) ? Client_Search(Req->argv[2])
 217                                           : Client_Search(Req->argv[5]);
 218                 if (! target || Client_Type(target) != CLIENT_SERVER)
 219                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 220                                         Client_ID(from), Req->argv[0]);
 221         }
 222
 223         if (target != Client_ThisServer()) {
 224                 /* Forward CONNECT command ... */
 225                 if (Req->argc == 3)
 226                         IRC_WriteStrClientPrefix(target, from,
 227                                  "CONNECT %s %s :%s", Req->argv[0],
 228                                  Req->argv[1], Req->argv[2]);
 229                 else
 230                         IRC_WriteStrClientPrefix(target, from,
 231                                 "CONNECT %s %s %s %s %s :%s", Req->argv[0],
 232                                 Req->argv[1], Req->argv[2], Req->argv[3],
 233                                 Req->argv[4], Req->argv[5]);
 234                 return CONNECTED;
 235         }
 236
 237         if (!Op_Check(from, Req))
 238                 return Op_NoPrivileges(Client, Req);
 239
 240         switch (Req->argc) {
 241         case 1:
 242                 if (!Conf_EnablePassiveServer(Req->argv[0]))
 243                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 244                                                   Client_ID(from),
 245                                                   Req->argv[0]);
 246                 break;
 247         case 2:
 248         case 3:
 249                 /* Connect configured server */
 250                 if (!Conf_EnableServer
 251                     (Req->argv[0], (UINT16) atoi(Req->argv[1])))
 252                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 253                                                   Client_ID(from),
 254                                                   Req->argv[0]);
 255                 break;
 256         default:
 257                 /* Add server */
 258                 if (!Conf_AddServer
 259                     (Req->argv[0], (UINT16) atoi(Req->argv[1]), Req->argv[2],
 260                      Req->argv[3], Req->argv[4]))
 261                         return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
 262                                                   Client_ID(from),
 263                                                   Req->argv[0]);
 264         }
 265
 266         Log(LOG_NOTICE | LOG_snotice,
 267             "Got CONNECT command from \"%s\" for \"%s\".", Client_Mask(from),
 268             Req->argv[0]);
 269         IRC_SendWallops(Client_ThisServer(), Client_ThisServer(),
 270                         "Received CONNECT %s from %s",
 271                         Req->argv[0], Client_ID(from));
 272
 273         return CONNECTED;
 274 } /* IRC_CONNECT */
 275
 276
 277 /**
 278  * Disconnect (and disable) configured server.
 279  */
 280 GLOBAL bool
 281 IRC_DISCONNECT(CLIENT * Client, REQUEST * Req)
 282 {
 283         CONN_ID my_conn;
 284
 285         assert(Client != NULL);
 286         assert(Req != NULL);
 287
 288         if (!Op_Check(Client, Req))
 289                 return Op_NoPrivileges(Client, Req);
 290
 291         /* Bad number of parameters? */
 292         if (Req->argc != 1)
 293                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 294                                           Client_ID(Client), Req->command);
 295
 296         IRC_SendWallops(Client_ThisServer(), Client_ThisServer(),
 297                         "Received DISCONNECT %s from %s",
 298                         Req->argv[0], Client_ID(Client));
 299
 300         Log(LOG_NOTICE | LOG_snotice,
 301             "Got DISCONNECT command from \"%s\" for \"%s\".",
 302             Client_Mask(Client), Req->argv[0]);
 303
 304         /* Save ID of this connection */
 305         my_conn = Client_Conn(Client);
 306
 307         /* Disconnect configured server */
 308         if (!Conf_DisableServer(Req->argv[0]))
 309                 return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 310                                           Client_ID(Client), Req->argv[0]);
 311
 312         /* Are we still connected or were we killed, too? */
 313         if (Conn_GetClient(my_conn))
 314                 return CONNECTED;
 315         else
 316                 return DISCONNECTED;
 317 } /* IRC_DISCONNECT */
 318
 319
 320 GLOBAL bool
 321 IRC_WALLOPS( CLIENT *Client, REQUEST *Req )
 322 {
 323         CLIENT *from;
 324
 325         assert( Client != NULL );
 326         assert( Req != NULL );
 327
 328         if (Req->argc != 1)
 329                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 330
 331         switch (Client_Type(Client)) {
 332         case CLIENT_USER:
 333                 if (!Client_OperByMe(Client))
 334                         return IRC_WriteStrClient(Client, ERR_NOPRIVILEGES_MSG, Client_ID(Client));
 335                 from = Client;
 336                 break;
 337         case CLIENT_SERVER:
 338                 from = Client_Search(Req->prefix);
 339                 break;
 340         default:
 341                 return CONNECTED;
 342         }
 343
 344         if (!from)
 345                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID(Client), Req->prefix);
 346
 347         IRC_SendWallops(Client, from, "%s", Req->argv[0]);
 348         return CONNECTED;
 349 } /* IRC_WALLOPS */
 350
 351
 352 /* -eof- */