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