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