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