src/ngircd/irc-oper.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001,2002 by 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 <stdlib.h>
  20 #include <string.h>
  21
  22 #include "ngircd.h"
  23 #include "resolve.h"
  24 #include "conn-func.h"
  25 #include "conf.h"
  26 #include "client.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
  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 /**
  54  * Check that the client is an IRC operator allowed to administer this server.
  55  */
  56 static bool
  57 Check_Oper(CLIENT * Client)
  58 {
  59         if (!Client_HasMode(Client, 'o'))
  60                 return false;
  61         if (!Client_OperByMe(Client) && !Conf_AllowRemoteOper)
  62                 return false;
  63         /* The client is an local IRC operator, or this server is configured
  64          * to trust remote operators. */
  65         return true;
  66 } /* CheckOper */
  67
  68
  69 /**
  70  * Return and log a "no privileges" message.
  71  */
  72 static bool
  73 No_Privileges(CLIENT * Client, REQUEST * Req)
  74 {
  75         Log(LOG_NOTICE, "No privileges: client \"%s\", command \"%s\"",
  76             Client_Mask(Client), Req->command);
  77         return IRC_WriteStrClient(Client, ERR_NOPRIVILEGES_MSG,
  78                                   Client_ID(Client));
  79 } /* PermissionDenied */
  80
  81
  82 GLOBAL bool
  83 IRC_OPER( CLIENT *Client, REQUEST *Req )
  84 {
  85         unsigned int i;
  86
  87         assert( Client != NULL );
  88         assert( Req != NULL );
  89
  90         if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
  91
  92         for( i = 0; i < Conf_Oper_Count; i++)
  93         {
  94                 if( Conf_Oper[i].name[0] && Conf_Oper[i].pwd[0] && ( strcmp( Conf_Oper[i].name, Req->argv[0] ) == 0 )) break;
  95         }
  96         if( i >= Conf_Oper_Count )
  97                 return Bad_OperPass(Client, Req->argv[0], "not configured");
  98
  99         if( strcmp( Conf_Oper[i].pwd, Req->argv[1] ) != 0 )
 100                 return Bad_OperPass(Client, Conf_Oper[i].name, "bad password");
 101
 102         if( Conf_Oper[i].mask && (! Match( Conf_Oper[i].mask, Client_Mask( Client ) )))
 103                 return Bad_OperPass(Client, Conf_Oper[i].mask, "hostmask check failed" );
 104
 105         if( ! Client_HasMode( Client, 'o' ))
 106         {
 107                 Client_ModeAdd( Client, 'o' );
 108                 if( ! IRC_WriteStrClient( Client, "MODE %s :+o", Client_ID( Client ))) return DISCONNECTED;
 109                 IRC_WriteStrServersPrefix( NULL, Client, "MODE %s :+o", Client_ID( Client ));
 110         }
 111
 112         if( ! Client_OperByMe( Client )) Log( LOG_NOTICE|LOG_snotice, "Got valid OPER from \"%s\", user is an IRC operator now.", Client_Mask( Client ));
 113
 114         Client_SetOperByMe( Client, true);
 115         return IRC_WriteStrClient( Client, RPL_YOUREOPER_MSG, Client_ID( Client ));
 116 } /* IRC_OPER */
 117
 118
 119 GLOBAL bool
 120 IRC_DIE(CLIENT * Client, REQUEST * Req)
 121 {
 122         /* Shut down server */
 123
 124         CONN_ID c;
 125         CLIENT *cl;
 126
 127         assert(Client != NULL);
 128         assert(Req != NULL);
 129
 130         if (!Check_Oper(Client))
 131                 return No_Privileges(Client, Req);
 132
 133         /* Bad number of parameters? */
 134 #ifdef STRICT_RFC
 135         if (Req->argc != 0)
 136 #else
 137         if (Req->argc > 1)
 138 #endif
 139                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 140                                           Client_ID(Client), Req->command);
 141
 142         /* Is a message given? */
 143         if (Req->argc > 0) {
 144                 c = Conn_First();
 145                 while (c != NONE) {
 146                         cl = Conn_GetClient(c);
 147                         if (Client_Type(cl) == CLIENT_USER)
 148                                 IRC_WriteStrClient(cl, "NOTICE %s :%s",
 149                                                 Client_ID(cl), Req->argv[0]);
 150                         c = Conn_Next(c);
 151                 }
 152         }
 153
 154         Log(LOG_NOTICE | LOG_snotice, "Got DIE command from \"%s\" ...",
 155             Client_Mask(Client));
 156         NGIRCd_SignalQuit = true;
 157
 158         return CONNECTED;
 159 } /* IRC_DIE */
 160
 161
 162 GLOBAL bool
 163 IRC_REHASH( CLIENT *Client, REQUEST *Req )
 164 {
 165         /* Reload configuration file */
 166
 167         assert( Client != NULL );
 168         assert( Req != NULL );
 169
 170         if (!Check_Oper(Client))
 171                 return No_Privileges(Client, Req);
 172
 173         /* Bad number of parameters? */
 174         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 175
 176         Log( LOG_NOTICE|LOG_snotice, "Got REHASH command from \"%s\" ...", Client_Mask( Client ));
 177         NGIRCd_SignalRehash = true;
 178
 179         return CONNECTED;
 180 } /* IRC_REHASH */
 181
 182
 183 GLOBAL bool
 184 IRC_RESTART( CLIENT *Client, REQUEST *Req )
 185 {
 186         /* Restart IRC server (fork a new process) */
 187
 188         assert( Client != NULL );
 189         assert( Req != NULL );
 190
 191         if (!Check_Oper(Client))
 192                 return No_Privileges(Client, Req);
 193
 194         /* Bad number of parameters? */
 195         if( Req->argc != 0 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 196
 197         Log( LOG_NOTICE|LOG_snotice, "Got RESTART command from \"%s\" ...", Client_Mask( Client ));
 198         NGIRCd_SignalRestart = true;
 199         return CONNECTED;
 200 } /* IRC_RESTART */
 201
 202
 203 /**
 204  * Connect configured or new server.
 205  */
 206 GLOBAL bool
 207 IRC_CONNECT(CLIENT * Client, REQUEST * Req)
 208 {
 209
 210         assert(Client != NULL);
 211         assert(Req != NULL);
 212
 213         if (!Check_Oper(Client))
 214                 return No_Privileges(Client, Req);
 215
 216         /* Bad number of parameters? */
 217         if ((Req->argc != 1) && (Req->argc != 2) && (Req->argc != 5))
 218                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 219                                           Client_ID(Client), Req->command);
 220
 221         /* Invalid port number? */
 222         if ((Req->argc > 1) && atoi(Req->argv[1]) < 1)
 223                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
 224                                           Client_ID(Client), Req->command);
 225
 226         Log(LOG_NOTICE | LOG_snotice,
 227             "Got CONNECT command from \"%s\" for \"%s\".", Client_Mask(Client),
 228             Req->argv[0]);
 229
 230         switch (Req->argc) {
 231         case 1:
 232                 if (!Conf_EnablePassiveServer(Req->argv[0]))
 233                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 234                                                   Client_ID(Client),
 235                                                   Req->argv[0]);
 236         break;
 237         case 2:
 238                 /* Connect configured server */
 239                 if (!Conf_EnableServer
 240                     (Req->argv[0], (UINT16) atoi(Req->argv[1])))
 241                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 242                                                   Client_ID(Client),
 243                                                   Req->argv[0]);
 244         break;
 245         default:
 246                 /* Add server */
 247                 if (!Conf_AddServer
 248                     (Req->argv[0], (UINT16) atoi(Req->argv[1]), Req->argv[2],
 249                      Req->argv[3], Req->argv[4]))
 250                         return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
 251                                                   Client_ID(Client),
 252                                                   Req->argv[0]);
 253         }
 254
 255         return CONNECTED;
 256 } /* IRC_CONNECT */
 257
 258
 259 GLOBAL bool
 260 IRC_DISCONNECT(CLIENT *Client, REQUEST *Req )
 261 {
 262         /* Disconnect and disable configured server */
 263
 264         CONN_ID my_conn;
 265
 266         assert( Client != NULL );
 267         assert( Req != NULL );
 268
 269         if (!Check_Oper(Client))
 270                 return No_Privileges(Client, Req);
 271
 272         /* Bad number of parameters? */
 273         if( Req->argc != 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 274
 275         Log( LOG_NOTICE|LOG_snotice, "Got DISCONNECT command from \"%s\" for0 \"%s\".", Client_Mask( Client ), Req->argv[0]);
 276
 277         /* Save ID of this connection */
 278         my_conn = Client_Conn( Client );
 279
 280         /* Connect configured server */
 281         if( ! Conf_DisableServer( Req->argv[0] )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] );
 282
 283         /* Are we still connected or were we killed, too? */
 284         if( Conn_GetClient( my_conn )) return CONNECTED;
 285         else return DISCONNECTED;
 286 } /* IRC_CONNECT */
 287
 288
 289 GLOBAL bool
 290 IRC_WALLOPS( CLIENT *Client, REQUEST *Req )
 291 {
 292         CLIENT *to, *from;
 293         int client_type;
 294
 295         assert( Client != NULL );
 296         assert( Req != NULL );
 297
 298         if (Req->argc != 1)
 299                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
 300
 301         client_type = Client_Type(Client);
 302         switch (client_type) {
 303         case CLIENT_USER:
 304                 if (!Client_OperByMe(Client))
 305                         return IRC_WriteStrClient(Client, ERR_NOPRIVILEGES_MSG, Client_ID(Client));
 306                 from = Client;
 307                 break;
 308         case CLIENT_SERVER:
 309                 from = Client_Search(Req->prefix);
 310                 break;
 311         default:
 312                 return CONNECTED;
 313         }
 314
 315         if (!from)
 316                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID(Client), Req->prefix);
 317
 318         for (to=Client_First(); to != NULL; to=Client_Next(to)) {
 319                 if (Client_Conn(to) < 0) /* no local connection or WALLOPS origin */
 320                         continue;
 321
 322                 client_type = Client_Type(to);
 323                 switch (client_type) {
 324                 case CLIENT_USER:
 325                         if (Client_HasMode(to, 'w'))
 326                                 IRC_WriteStrClientPrefix(to, from, "WALLOPS :%s", Req->argv[0]);
 327                         break;
 328                 case CLIENT_SERVER:
 329                         if (to != Client)
 330                                 IRC_WriteStrClientPrefix(to, from, "WALLOPS :%s", Req->argv[0]);
 331                         break;
 332                 }
 333         }
 334         return CONNECTED;
 335 }
 336
 337
 338
 339 /* -eof- */