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
  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 /**
  55  * Check that the client is an IRC operator allowed to administer this server.
  56  */
  57 static bool
  58 Check_Oper(CLIENT * Client)
  59 {
  60         if (!Client_HasMode(Client, 'o'))
  61                 return false;
  62         if (!Client_OperByMe(Client) && !Conf_AllowRemoteOper)
  63                 return false;
  64         /* The client is an local IRC operator, or this server is configured
  65          * to trust remote operators. */
  66         return true;
  67 } /* CheckOper */
  68
  69
  70 /**
  71  * Return and log a "no privileges" message.
  72  */
  73 static bool
  74 No_Privileges(CLIENT * Client, REQUEST * Req)
  75 {
  76         CLIENT *from = NULL;
  77
  78         if (Req->prefix)
  79                 from = Client_Search(Req->prefix);
  80
  81         if (from) {
  82                 Log(LOG_NOTICE, "No privileges: client \"%s\" (%s), command \"%s\"",
  83                     Req->prefix, Client_Mask(Client), Req->command);
  84                 return IRC_WriteStrClient(from, ERR_NOPRIVILEGES_MSG,
  85                                           Client_ID(from));
  86         } else {
  87                 Log(LOG_NOTICE, "No privileges: client \"%s\", command \"%s\"",
  88                     Client_Mask(Client), Req->command);
  89                 return IRC_WriteStrClient(Client, ERR_NOPRIVILEGES_MSG,
  90                                           Client_ID(Client));
  91         }
  92 } /* PermissionDenied */
  93
  94
  95 GLOBAL bool
  96 IRC_OPER( CLIENT *Client, REQUEST *Req )
  97 {
  98         unsigned int i;
  99
 100         assert( Client != NULL );
 101         assert( Req != NULL );
 102
 103         if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 104
 105         for( i = 0; i < Conf_Oper_Count; i++)
 106         {
 107                 if( Conf_Oper[i].name[0] && Conf_Oper[i].pwd[0] && ( strcmp( Conf_Oper[i].name, Req->argv[0] ) == 0 )) break;
 108         }
 109         if( i >= Conf_Oper_Count )
 110                 return Bad_OperPass(Client, Req->argv[0], "not configured");
 111
 112         if( strcmp( Conf_Oper[i].pwd, Req->argv[1] ) != 0 )
 113                 return Bad_OperPass(Client, Conf_Oper[i].name, "bad password");
 114
 115         if( Conf_Oper[i].mask && (! Match( Conf_Oper[i].mask, Client_Mask( Client ) )))
 116                 return Bad_OperPass(Client, Conf_Oper[i].mask, "hostmask check failed" );
 117
 118         if( ! Client_HasMode( Client, 'o' ))
 119         {
 120                 Client_ModeAdd( Client, 'o' );
 121                 if( ! IRC_WriteStrClient( Client, "MODE %s :+o", Client_ID( Client ))) return DISCONNECTED;
 122                 IRC_WriteStrServersPrefix( NULL, Client, "MODE %s :+o", Client_ID( Client ));
 123         }
 124
 125         if( ! Client_OperByMe( Client )) Log( LOG_NOTICE|LOG_snotice, "Got valid OPER from \"%s\", user is an IRC operator now.", Client_Mask( Client ));
 126
 127         Client_SetOperByMe( Client, true);
 128         return IRC_WriteStrClient( Client, RPL_YOUREOPER_MSG, Client_ID( Client ));
 129 } /* IRC_OPER */
 130
 131
 132 GLOBAL bool
 133 IRC_DIE(CLIENT * Client, REQUEST * Req)
 134 {
 135         /* Shut down server */
 136
 137         CONN_ID c;
 138         CLIENT *cl;
 139
 140         assert(Client != NULL);
 141         assert(Req != NULL);
 142
 143         if (!Check_Oper(Client))
 144                 return No_Privileges(Client, Req);
 145
 146         /* Bad number of parameters? */
 147 #ifdef STRICT_RFC
 148         if (Req->argc != 0)
 149 #else
 150         if (Req->argc > 1)
 151 #endif
 152                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 153                                           Client_ID(Client), Req->command);
 154
 155         /* Is a message given? */
 156         if (Req->argc > 0) {
 157                 c = Conn_First();
 158                 while (c != NONE) {
 159                         cl = Conn_GetClient(c);
 160                         if (Client_Type(cl) == CLIENT_USER)
 161                                 IRC_WriteStrClient(cl, "NOTICE %s :%s",
 162                                                 Client_ID(cl), Req->argv[0]);
 163                         c = Conn_Next(c);
 164                 }
 165         }
 166
 167         Log(LOG_NOTICE | LOG_snotice, "Got DIE command from \"%s\" ...",
 168             Client_Mask(Client));
 169         NGIRCd_SignalQuit = true;
 170
 171         return CONNECTED;
 172 } /* IRC_DIE */
 173
 174
 175 GLOBAL bool
 176 IRC_REHASH( CLIENT *Client, REQUEST *Req )
 177 {
 178         /* Reload configuration file */
 179
 180         assert( Client != NULL );
 181         assert( Req != NULL );
 182
 183         if (!Check_Oper(Client))
 184                 return No_Privileges(Client, Req);
 185
 186         /* Bad number of parameters? */
 187         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 188
 189         Log( LOG_NOTICE|LOG_snotice, "Got REHASH command from \"%s\" ...", Client_Mask( Client ));
 190         NGIRCd_SignalRehash = true;
 191
 192         return CONNECTED;
 193 } /* IRC_REHASH */
 194
 195
 196 GLOBAL bool
 197 IRC_RESTART( CLIENT *Client, REQUEST *Req )
 198 {
 199         /* Restart IRC server (fork a new process) */
 200
 201         assert( Client != NULL );
 202         assert( Req != NULL );
 203
 204         if (!Check_Oper(Client))
 205                 return No_Privileges(Client, Req);
 206
 207         /* Bad number of parameters? */
 208         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 209
 210         Log( LOG_NOTICE|LOG_snotice, "Got RESTART command from \"%s\" ...", Client_Mask( Client ));
 211         NGIRCd_SignalRestart = true;
 212         return CONNECTED;
 213 } /* IRC_RESTART */
 214
 215
 216 /**
 217  * Connect configured or new server.
 218  */
 219 GLOBAL bool
 220 IRC_CONNECT(CLIENT * Client, REQUEST * Req)
 221 {
 222         assert(Client != NULL);
 223         assert(Req != NULL);
 224
 225         if (!Check_Oper(Client))
 226                 return No_Privileges(Client, Req);
 227
 228         /* Bad number of parameters? */
 229         if ((Req->argc != 1) && (Req->argc != 2) && (Req->argc != 5))
 230                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 231                                           Client_ID(Client), Req->command);
 232
 233         /* Invalid port number? */
 234         if ((Req->argc > 1) && atoi(Req->argv[1]) < 1)
 235                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 236                                           Client_ID(Client), Req->command);
 237
 238         IRC_SendWallops(Client_ThisServer(), Client_ThisServer(),
 239                         "Received CONNECT %s from %s",
 240                         Req->argv[0], Client_ID(Client));
 241
 242         Log(LOG_NOTICE | LOG_snotice,
 243             "Got CONNECT command from \"%s\" for \"%s\".", Client_Mask(Client),
 244             Req->argv[0]);
 245
 246         switch (Req->argc) {
 247         case 1:
 248                 if (!Conf_EnablePassiveServer(Req->argv[0]))
 249                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 250                                                   Client_ID(Client),
 251                                                   Req->argv[0]);
 252         break;
 253         case 2:
 254                 /* Connect configured server */
 255                 if (!Conf_EnableServer
 256                     (Req->argv[0], (UINT16) atoi(Req->argv[1])))
 257                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 258                                                   Client_ID(Client),
 259                                                   Req->argv[0]);
 260         break;
 261         default:
 262                 /* Add server */
 263                 if (!Conf_AddServer
 264                     (Req->argv[0], (UINT16) atoi(Req->argv[1]), Req->argv[2],
 265                      Req->argv[3], Req->argv[4]))
 266                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 267                                                   Client_ID(Client),
 268                                                   Req->argv[0]);
 269         }
 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 (!Check_Oper(Client))
 287                 return No_Privileges(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- */