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 1.3 2002/03/11 17:33:40 alex Exp $
14 * irc-server.c: IRC-Befehle fuer Server-Links
16 * $Log: irc-server.c,v $
17 * Revision 1.3 2002/03/11 17:33:40 alex
18 * - Log-Level von SQUIT und QUIT bei unbekannten Clients auf DEBUG herabgesetzt.
20 * Revision 1.2 2002/03/06 15:50:14 alex
21 * - kleine Code-Umstellungen.
23 * Revision 1.1 2002/03/03 17:15:11 alex
24 * - Source in weitere Module fuer IRC-Befehle aufgesplitted.
38 #include "irc-write.h"
43 #include "irc-server.h"
46 GLOBAL BOOLEAN IRC_SERVER( CLIENT *Client, REQUEST *Req )
48 CHAR str[LINE_LEN], *ptr;
49 CLIENT *from, *c, *cl;
55 assert( Client != NULL );
56 assert( Req != NULL );
58 /* Fehler liefern, wenn kein lokaler Client */
59 if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
61 if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
63 /* Verbindung soll als Server-Server-Verbindung registriert werden */
64 Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
66 /* Falsche Anzahl Parameter? */
67 if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
69 /* Ist dieser Server bei uns konfiguriert? */
70 for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
71 if( i >= Conf_Server_Count )
73 /* Server ist nicht konfiguriert! */
74 Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
75 Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
78 if( strcmp( Client_Password( Client ), Conf_Server[i].pwd ) != 0 )
80 /* Falsches Passwort */
81 Log( LOG_ERR, "Connection %d: Bad password for server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
82 Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
86 /* Ist ein Server mit dieser ID bereits registriert? */
87 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
89 /* Server-Strukturen fuellen ;-) */
90 Client_SetID( Client, Req->argv[0] );
91 Client_SetHops( Client, 1 );
92 Client_SetInfo( Client, Req->argv[Req->argc - 1] );
94 /* Meldet sich der Server bei uns an? */
97 /* Unseren SERVER- und PASS-Befehl senden */
99 if( ! IRC_WriteStrClient( Client, "PASS %s "PASSSERVERADD, Conf_Server[i].pwd )) ok = FALSE;
100 else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
103 Conn_Close( Client_Conn( Client ), "Unexpected server behavior!", NULL, FALSE );
106 Client_SetIntroducer( Client, Client );
107 Client_SetToken( Client, 1 );
109 else Client_SetToken( Client, atoi( Req->argv[1] ));
111 Log( LOG_NOTICE, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), Client_Conn( Client ));
113 Client_SetType( Client, CLIENT_SERVER );
115 /* maximalen Hop Count ermitteln */
120 if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
121 c = Client_Next( c );
124 /* Alle bisherigen Server dem neuen Server bekannt machen,
125 * die bisherigen Server ueber den neuen informierenn */
126 for( i = 0; i < ( max_hops + 1 ); i++ )
131 if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
133 if( Client_Conn( c ) > NONE )
135 /* Dem gefundenen Server gleich den neuen
136 * Server bekannt machen */
137 if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
140 /* Den neuen Server ueber den alten informieren */
141 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;
143 c = Client_Next( c );
147 /* alle User dem neuen Server bekannt machen */
151 if( Client_Type( c ) == CLIENT_USER )
153 /* User an neuen Server melden */
154 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;
156 c = Client_Next( c );
159 /* Channels dem neuen Server bekannt machen */
160 chan = Channel_First( );
163 /* alle Member suchen */
164 cl2chan = Channel_FirstMember( chan );
165 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
168 cl = Channel_GetClient( cl2chan );
169 assert( cl != NULL );
171 /* Nick, ggf. mit Modes, anhaengen */
172 if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
173 if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
174 if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
175 strcat( str, Client_ID( cl ));
177 if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 8 ))
180 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
181 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
184 cl2chan = Channel_NextMember( chan, cl2chan );
188 if( str[strlen( str ) - 1] != ':')
190 /* Ja; Also senden ... */
191 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
194 /* naechsten Channel suchen */
195 chan = Channel_Next( chan );
200 else if( Client_Type( Client ) == CLIENT_SERVER )
202 /* Neuer Server wird im Netz angekuendigt */
204 /* Falsche Anzahl Parameter? */
205 if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
207 /* Ist ein Server mit dieser ID bereits registriert? */
208 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
210 /* Ueberfluessige Hostnamen aus Info-Text entfernen */
211 ptr = strchr( Req->argv[3] + 2, '[' );
212 if( ! ptr ) ptr = Req->argv[3];
214 from = Client_GetFromID( Req->prefix );
217 /* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
218 Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
219 Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
223 /* Neue Client-Struktur anlegen */
224 c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
227 /* Neue Client-Struktur konnte nicht angelegt werden */
228 Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
229 Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
233 /* Log-Meldung zusammenbauen und ausgeben */
234 if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
235 else strcpy( str, "" );
236 Log( LOG_NOTICE, "Server \"%s\" registered (via %s, %s%d hop%s).", Client_ID( c ), Client_ID( Client ), str, Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
238 /* Andere Server informieren */
239 IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
243 else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
247 GLOBAL BOOLEAN IRC_NJOIN( CLIENT *Client, REQUEST *Req )
249 CHAR *channame, *ptr, modes[8];
250 BOOLEAN is_op, is_voiced;
254 assert( Client != NULL );
255 assert( Req != NULL );
257 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTEREDSERVER_MSG, Client_ID( Client ));
259 /* Falsche Anzahl Parameter? */
260 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
262 channame = Req->argv[0];
263 ptr = strtok( Req->argv[1], "," );
266 is_op = is_voiced = FALSE;
268 /* Prefixe abschneiden */
269 while(( *ptr == '@' ) || ( *ptr == '+' ))
271 if( *ptr == '@' ) is_op = TRUE;
272 if( *ptr == '+' ) is_voiced = TRUE;
276 c = Client_GetFromID( ptr );
279 Channel_Join( c, channame );
280 chan = Channel_Search( channame );
281 assert( chan != NULL );
283 if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
284 if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
286 /* im Channel bekannt machen */
287 IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
289 /* Channel-User-Modes setzen */
290 strcpy( modes, Channel_UserModes( chan, c ));
293 /* Modes im Channel bekannt machen */
294 IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
297 else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
299 /* naechsten Nick suchen */
300 ptr = strtok( NULL, "," );
303 /* an andere Server weiterleiten */
304 IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
310 GLOBAL BOOLEAN IRC_SQUIT( CLIENT *Client, REQUEST *Req )
313 CHAR msg[LINE_LEN + 64];
315 assert( Client != NULL );
316 assert( Req != NULL );
318 /* SQUIT ist nur fuer Server erlaubt */
319 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
321 /* Falsche Anzahl Parameter? */
322 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
324 Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
326 /* SQUIT an alle Server weiterleiten */
327 IRC_WriteStrServers( Client, "SQUIT %s :%s", Req->argv[0], Req->argv[1] );
329 target = Client_GetFromID( Req->argv[0] );
332 /* Den Server kennen wir nicht (mehr), also nichts zu tun. */
333 Log( LOG_DEBUG, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
337 if( Req->argv[1][0] )
339 if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
340 sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
342 else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
344 if( Client_Conn( target ) > NONE )
346 /* dieser Server hat die Connection */
347 if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
348 else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
353 /* Verbindung hielt anderer Server */
354 Client_Destroy( target, msg, Req->argv[1] );