2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
5 * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
6 * der GNU General Public License (GPL), wie von der Free Software Foundation
7 * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
8 * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
9 * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
10 * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
12 * $Id: irc-server.c,v 1.23 2002/11/30 15:04:57 alex Exp $
14 * irc-server.c: IRC-Befehle fuer Server-Links
31 #include "irc-write.h"
38 #include "irc-server.h"
42 IRC_SERVER( CLIENT *Client, REQUEST *Req )
44 CHAR str[LINE_LEN], *ptr;
45 CLIENT *from, *c, *cl;
52 assert( Client != NULL );
53 assert( Req != NULL );
55 /* Fehler liefern, wenn kein lokaler Client */
56 if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
58 if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
60 /* Verbindung soll als Server-Server-Verbindung registriert werden */
61 Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
63 /* Falsche Anzahl Parameter? */
64 if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
66 /* Ist dieser Server bei uns konfiguriert? */
67 for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
68 if( i >= Conf_Server_Count )
70 /* Server ist nicht konfiguriert! */
71 Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
72 Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
75 if( strcmp( Client_Password( Client ), Conf_Server[i].pwd_in ) != 0 )
77 /* Falsches Passwort */
78 Log( LOG_ERR, "Connection %d: Got bad password from server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
79 Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
83 /* Ist ein Server mit dieser ID bereits registriert? */
84 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
86 /* Server-Strukturen fuellen ;-) */
87 Client_SetID( Client, Req->argv[0] );
88 Client_SetHops( Client, 1 );
89 Client_SetInfo( Client, Req->argv[Req->argc - 1] );
91 /* Meldet sich der Server bei uns an (d.h., bauen nicht wir
92 * selber die Verbindung zu einem anderen Server auf)? */
93 con = Client_Conn( Client );
94 if( Client_Token( Client ) != TOKEN_OUTBOUND )
96 /* Eingehende Verbindung: Unseren SERVER- und PASS-Befehl senden */
98 if( ! IRC_WriteStrClient( Client, "PASS %s %s", Conf_Server[i].pwd_out, NGIRCd_ProtoID )) ok = FALSE;
99 else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
102 Conn_Close( con, "Unexpected server behavior!", NULL, FALSE );
105 Client_SetIntroducer( Client, Client );
106 Client_SetToken( Client, 1 );
110 /* Ausgehende verbindung, SERVER und PASS wurden von uns bereits
111 * an die Gegenseite uerbermittelt */
112 Client_SetToken( Client, atoi( Req->argv[1] ));
115 Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), con );
117 Client_SetType( Client, CLIENT_SERVER );
118 Conn_SetServer( con, i );
121 /* Kompression initialisieren, wenn erforderlich */
122 if( strchr( Client_Flags( Client ), 'Z' ))
124 if( ! Conn_InitZip( con ))
127 Conn_Close( con, "Can't inizialize compression (zlib)!", NULL, FALSE );
133 /* maximalen Hop Count ermitteln */
138 if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
139 c = Client_Next( c );
142 /* Alle bisherigen Server dem neuen Server bekannt machen,
143 * die bisherigen Server ueber den neuen informierenn */
144 for( i = 0; i < ( max_hops + 1 ); i++ )
149 if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
151 if( Client_Conn( c ) > NONE )
153 /* Dem gefundenen Server gleich den neuen
154 * Server bekannt machen */
155 if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
158 /* Den neuen Server ueber den alten informieren */
159 if( ! IRC_WriteStrClientPrefix( Client, Client_Hops( c ) == 1 ? Client_ThisServer( ) : Client_Introducer( c ), "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ))) return DISCONNECTED;
161 c = Client_Next( c );
165 /* alle User dem neuen Server bekannt machen */
169 if( Client_Type( c ) == CLIENT_USER )
171 /* User an neuen Server melden */
172 if( ! IRC_WriteStrClient( Client, "NICK %s %d %s %s %d +%s :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_User( c ), Client_Hostname( c ), Client_MyToken( Client_Introducer( c )), Client_Modes( c ), Client_Info( c ))) return DISCONNECTED;
174 c = Client_Next( c );
177 /* Channels dem neuen Server bekannt machen */
178 chan = Channel_First( );
182 /* Wenn unterstuetzt, CHANINFO senden */
183 if( strchr( Client_Flags( Client ), 'C' ))
185 /* CHANINFO senden */
186 if( ! IRC_WriteStrClient( Client, "CHANINFO %s +%s :%s", Channel_Name( chan ), Channel_Modes( chan ), Channel_Topic( chan ))) return DISCONNECTED;
190 /* alle Member suchen */
191 cl2chan = Channel_FirstMember( chan );
192 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
195 cl = Channel_GetClient( cl2chan );
196 assert( cl != NULL );
198 /* Nick, ggf. mit Modes, anhaengen */
199 if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
200 if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
201 if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
202 strcat( str, Client_ID( cl ));
204 if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 8 ))
207 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
208 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
211 cl2chan = Channel_NextMember( chan, cl2chan );
215 if( str[strlen( str ) - 1] != ':')
217 /* Ja; Also senden ... */
218 if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
221 /* naechsten Channel suchen */
222 chan = Channel_Next( chan );
227 else if( Client_Type( Client ) == CLIENT_SERVER )
229 /* Neuer Server wird im Netz angekuendigt */
231 /* Falsche Anzahl Parameter? */
232 if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
234 /* Ist ein Server mit dieser ID bereits registriert? */
235 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
237 /* Ueberfluessige Hostnamen aus Info-Text entfernen */
238 ptr = strchr( Req->argv[3] + 2, '[' );
239 if( ! ptr ) ptr = Req->argv[3];
241 from = Client_Search( Req->prefix );
244 /* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
245 Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
246 Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
250 /* Neue Client-Struktur anlegen */
251 c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
254 /* Neue Client-Struktur konnte nicht angelegt werden */
255 Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
256 Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
260 /* Log-Meldung zusammenbauen und ausgeben */
261 if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
262 else strcpy( str, "" );
263 Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" registered (via %s, %s%d hop%s).", Client_ID( c ), Client_ID( Client ), str, Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
265 /* Andere Server informieren */
266 IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
270 else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
275 IRC_NJOIN( CLIENT *Client, REQUEST *Req )
277 CHAR str[COMMAND_LEN], *channame, *ptr, modes[8];
278 BOOLEAN is_op, is_voiced;
282 assert( Client != NULL );
283 assert( Req != NULL );
285 /* Falsche Anzahl Parameter? */
286 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
288 strncpy( str, Req->argv[1], COMMAND_LEN - 1 );
289 str[COMMAND_LEN - 1] = '\0';
291 channame = Req->argv[0];
292 ptr = strtok( str, "," );
295 is_op = is_voiced = FALSE;
297 /* Prefixe abschneiden */
298 while(( *ptr == '@' ) || ( *ptr == '+' ))
300 if( *ptr == '@' ) is_op = TRUE;
301 if( *ptr == '+' ) is_voiced = TRUE;
305 c = Client_Search( ptr );
308 Channel_Join( c, channame );
309 chan = Channel_Search( channame );
310 assert( chan != NULL );
312 if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
313 if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
315 /* im Channel bekannt machen */
316 IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
318 /* Channel-User-Modes setzen */
319 strcpy( modes, Channel_UserModes( chan, c ));
322 /* Modes im Channel bekannt machen */
323 IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
326 else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
328 /* naechsten Nick suchen */
329 ptr = strtok( NULL, "," );
332 /* an andere Server weiterleiten */
333 IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
340 IRC_SQUIT( CLIENT *Client, REQUEST *Req )
343 CHAR msg[LINE_LEN + 64];
345 assert( Client != NULL );
346 assert( Req != NULL );
348 /* Falsche Anzahl Parameter? */
349 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
351 Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
353 target = Client_Search( Req->argv[0] );
356 /* Den Server kennen wir nicht (mehr), also nichts zu tun. */
357 Log( LOG_WARNING, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
361 if( Req->argv[1][0] )
363 if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
364 sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
366 else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
368 if( Client_Conn( target ) > NONE )
370 /* dieser Server hat die Connection */
371 if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
372 else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
377 /* Verbindung hielt anderer Server */
378 Client_Destroy( target, msg, Req->argv[1], FALSE );