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