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 1.9 2002/04/08 01:20:14 alex Exp $
14 * irc-server.c: IRC-Befehle fuer Server-Links
27 #include "irc-write.h"
32 #include "irc-server.h"
35 GLOBAL BOOLEAN IRC_SERVER( CLIENT *Client, REQUEST *Req )
37 CHAR str[LINE_LEN], *ptr;
38 CLIENT *from, *c, *cl;
44 assert( Client != NULL );
45 assert( Req != NULL );
47 /* Fehler liefern, wenn kein lokaler Client */
48 if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
50 if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
52 /* Verbindung soll als Server-Server-Verbindung registriert werden */
53 Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
55 /* Falsche Anzahl Parameter? */
56 if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
58 /* Ist dieser Server bei uns konfiguriert? */
59 for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
60 if( i >= Conf_Server_Count )
62 /* Server ist nicht konfiguriert! */
63 Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
64 Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
67 if( strcmp( Client_Password( Client ), Conf_Server[i].pwd ) != 0 )
69 /* Falsches Passwort */
70 Log( LOG_ERR, "Connection %d: Bad password for server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
71 Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
75 /* Ist ein Server mit dieser ID bereits registriert? */
76 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
78 /* Server-Strukturen fuellen ;-) */
79 Client_SetID( Client, Req->argv[0] );
80 Client_SetHops( Client, 1 );
81 Client_SetInfo( Client, Req->argv[Req->argc - 1] );
83 /* Meldet sich der Server bei uns an (d.h., bauen nicht wir
84 * selber die Verbindung zu einem anderen Server auf)? */
85 if( Client_Token( Client ) != TOKEN_OUTBOUND )
87 /* Eingehende Verbindung: Unseren SERVER- und PASS-Befehl senden */
89 if( ! IRC_WriteStrClient( Client, "PASS %s "PASSSERVERADD, Conf_Server[i].pwd )) ok = FALSE;
90 else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
93 Conn_Close( Client_Conn( Client ), "Unexpected server behavior!", NULL, FALSE );
96 Client_SetIntroducer( Client, Client );
97 Client_SetToken( Client, 1 );
101 /* Ausgehende verbindung, SERVER und PASS wurden von uns bereits
102 * an die Gegenseite uerbermittelt */
103 Client_SetToken( Client, atoi( Req->argv[1] ));
106 Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), Client_Conn( Client ));
108 Client_SetType( Client, CLIENT_SERVER );
110 /* maximalen Hop Count ermitteln */
115 if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
116 c = Client_Next( c );
119 /* Alle bisherigen Server dem neuen Server bekannt machen,
120 * die bisherigen Server ueber den neuen informierenn */
121 for( i = 0; i < ( max_hops + 1 ); i++ )
126 if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
128 if( Client_Conn( c ) > NONE )
130 /* Dem gefundenen Server gleich den neuen
131 * Server bekannt machen */
132 if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
135 /* Den neuen Server ueber den alten informieren */
136 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;
138 c = Client_Next( c );
142 /* alle User dem neuen Server bekannt machen */
146 if( Client_Type( c ) == CLIENT_USER )
148 /* User an neuen Server melden */
149 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;
151 c = Client_Next( c );
154 /* Channels dem neuen Server bekannt machen */
155 chan = Channel_First( );
158 /* alle Member suchen */
159 cl2chan = Channel_FirstMember( chan );
160 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
163 cl = Channel_GetClient( cl2chan );
164 assert( cl != NULL );
166 /* Nick, ggf. mit Modes, anhaengen */
167 if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
168 if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
169 if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
170 strcat( str, Client_ID( cl ));
172 if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 8 ))
175 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
176 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
179 cl2chan = Channel_NextMember( chan, cl2chan );
183 if( str[strlen( str ) - 1] != ':')
185 /* Ja; Also senden ... */
186 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
189 /* naechsten Channel suchen */
190 chan = Channel_Next( chan );
195 else if( Client_Type( Client ) == CLIENT_SERVER )
197 /* Neuer Server wird im Netz angekuendigt */
199 /* Falsche Anzahl Parameter? */
200 if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
202 /* Ist ein Server mit dieser ID bereits registriert? */
203 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
205 /* Ueberfluessige Hostnamen aus Info-Text entfernen */
206 ptr = strchr( Req->argv[3] + 2, '[' );
207 if( ! ptr ) ptr = Req->argv[3];
209 from = Client_Search( Req->prefix );
212 /* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
213 Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
214 Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
218 /* Neue Client-Struktur anlegen */
219 c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
222 /* Neue Client-Struktur konnte nicht angelegt werden */
223 Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
224 Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
228 /* Log-Meldung zusammenbauen und ausgeben */
229 if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
230 else strcpy( str, "" );
231 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": "" );
233 /* Andere Server informieren */
234 IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
238 else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
242 GLOBAL BOOLEAN IRC_NJOIN( CLIENT *Client, REQUEST *Req )
244 CHAR *channame, *ptr, modes[8];
245 BOOLEAN is_op, is_voiced;
249 assert( Client != NULL );
250 assert( Req != NULL );
252 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTEREDSERVER_MSG, Client_ID( Client ));
254 /* Falsche Anzahl Parameter? */
255 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
257 channame = Req->argv[0];
258 ptr = strtok( Req->argv[1], "," );
261 is_op = is_voiced = FALSE;
263 /* Prefixe abschneiden */
264 while(( *ptr == '@' ) || ( *ptr == '+' ))
266 if( *ptr == '@' ) is_op = TRUE;
267 if( *ptr == '+' ) is_voiced = TRUE;
271 c = Client_Search( ptr );
274 Channel_Join( c, channame );
275 chan = Channel_Search( channame );
276 assert( chan != NULL );
278 if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
279 if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
281 /* im Channel bekannt machen */
282 IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
284 /* Channel-User-Modes setzen */
285 strcpy( modes, Channel_UserModes( chan, c ));
288 /* Modes im Channel bekannt machen */
289 IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
292 else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
294 /* naechsten Nick suchen */
295 ptr = strtok( NULL, "," );
298 /* an andere Server weiterleiten */
299 IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
305 GLOBAL BOOLEAN IRC_SQUIT( CLIENT *Client, REQUEST *Req )
308 CHAR msg[LINE_LEN + 64];
310 assert( Client != NULL );
311 assert( Req != NULL );
313 /* SQUIT ist nur fuer Server erlaubt */
314 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
316 /* Falsche Anzahl Parameter? */
317 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
319 Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
321 /* SQUIT an alle Server weiterleiten */
322 IRC_WriteStrServers( Client, "SQUIT %s :%s", Req->argv[0], Req->argv[1] );
324 target = Client_Search( Req->argv[0] );
327 /* Den Server kennen wir nicht (mehr), also nichts zu tun. */
328 Log( LOG_WARNING, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
332 if( Req->argv[1][0] )
334 if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
335 sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
337 else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
339 if( Client_Conn( target ) > NONE )
341 /* dieser Server hat die Connection */
342 if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
343 else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
348 /* Verbindung hielt anderer Server */
349 Client_Destroy( target, msg, Req->argv[1], FALSE );