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 1.15 2002/09/02 19:05:03 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;
51 assert( Client != NULL );
52 assert( Req != NULL );
54 /* Fehler liefern, wenn kein lokaler Client */
55 if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
57 if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
59 /* Verbindung soll als Server-Server-Verbindung registriert werden */
60 Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
62 /* Falsche Anzahl Parameter? */
63 if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
65 /* Ist dieser Server bei uns konfiguriert? */
66 for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
67 if( i >= Conf_Server_Count )
69 /* Server ist nicht konfiguriert! */
70 Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
71 Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
74 if( strcmp( Client_Password( Client ), Conf_Server[i].pwd ) != 0 )
76 /* Falsches Passwort */
77 Log( LOG_ERR, "Connection %d: Bad password for server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
78 Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
82 /* Ist ein Server mit dieser ID bereits registriert? */
83 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
85 /* Server-Strukturen fuellen ;-) */
86 Client_SetID( Client, Req->argv[0] );
87 Client_SetHops( Client, 1 );
88 Client_SetInfo( Client, Req->argv[Req->argc - 1] );
90 /* Meldet sich der Server bei uns an (d.h., bauen nicht wir
91 * selber die Verbindung zu einem anderen Server auf)? */
92 if( Client_Token( Client ) != TOKEN_OUTBOUND )
94 /* Eingehende Verbindung: Unseren SERVER- und PASS-Befehl senden */
96 if( ! IRC_WriteStrClient( Client, "PASS %s %s", Conf_Server[i].pwd, NGIRCd_ProtoID )) ok = FALSE;
97 else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
100 Conn_Close( Client_Conn( Client ), "Unexpected server behavior!", NULL, FALSE );
103 Client_SetIntroducer( Client, Client );
104 Client_SetToken( Client, 1 );
108 /* Ausgehende verbindung, SERVER und PASS wurden von uns bereits
109 * an die Gegenseite uerbermittelt */
110 Client_SetToken( Client, atoi( Req->argv[1] ));
113 Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), Client_Conn( Client ));
115 Client_SetType( Client, CLIENT_SERVER );
117 /* maximalen Hop Count ermitteln */
122 if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
123 c = Client_Next( c );
126 /* Alle bisherigen Server dem neuen Server bekannt machen,
127 * die bisherigen Server ueber den neuen informierenn */
128 for( i = 0; i < ( max_hops + 1 ); i++ )
133 if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
135 if( Client_Conn( c ) > NONE )
137 /* Dem gefundenen Server gleich den neuen
138 * Server bekannt machen */
139 if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
142 /* Den neuen Server ueber den alten informieren */
143 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;
145 c = Client_Next( c );
149 /* alle User dem neuen Server bekannt machen */
153 if( Client_Type( c ) == CLIENT_USER )
155 /* User an neuen Server melden */
156 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;
158 c = Client_Next( c );
161 /* Channels dem neuen Server bekannt machen */
162 chan = Channel_First( );
165 /* alle Member suchen */
166 cl2chan = Channel_FirstMember( chan );
167 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
170 cl = Channel_GetClient( cl2chan );
171 assert( cl != NULL );
173 /* Nick, ggf. mit Modes, anhaengen */
174 if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
175 if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
176 if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
177 strcat( str, Client_ID( cl ));
179 if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 8 ))
182 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
183 sprintf( str, "NJOIN %s :", Channel_Name( chan ));
186 cl2chan = Channel_NextMember( chan, cl2chan );
190 if( str[strlen( str ) - 1] != ':')
192 /* Ja; Also senden ... */
193 if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
196 /* naechsten Channel suchen */
197 chan = Channel_Next( chan );
202 else if( Client_Type( Client ) == CLIENT_SERVER )
204 /* Neuer Server wird im Netz angekuendigt */
206 /* Falsche Anzahl Parameter? */
207 if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
209 /* Ist ein Server mit dieser ID bereits registriert? */
210 if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
212 /* Ueberfluessige Hostnamen aus Info-Text entfernen */
213 ptr = strchr( Req->argv[3] + 2, '[' );
214 if( ! ptr ) ptr = Req->argv[3];
216 from = Client_Search( Req->prefix );
219 /* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
220 Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
221 Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
225 /* Neue Client-Struktur anlegen */
226 c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
229 /* Neue Client-Struktur konnte nicht angelegt werden */
230 Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
231 Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
235 /* Log-Meldung zusammenbauen und ausgeben */
236 if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
237 else strcpy( str, "" );
238 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": "" );
240 /* Andere Server informieren */
241 IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
245 else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
250 IRC_NJOIN( CLIENT *Client, REQUEST *Req )
252 CHAR str[COMMAND_LEN], *channame, *ptr, modes[8];
253 BOOLEAN is_op, is_voiced;
257 assert( Client != NULL );
258 assert( Req != NULL );
260 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTEREDSERVER_MSG, Client_ID( Client ));
262 /* Falsche Anzahl Parameter? */
263 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
265 strncpy( str, Req->argv[1], COMMAND_LEN - 1 );
266 str[COMMAND_LEN - 1] = '\0';
268 channame = Req->argv[0];
269 ptr = strtok( str, "," );
272 is_op = is_voiced = FALSE;
274 /* Prefixe abschneiden */
275 while(( *ptr == '@' ) || ( *ptr == '+' ))
277 if( *ptr == '@' ) is_op = TRUE;
278 if( *ptr == '+' ) is_voiced = TRUE;
282 c = Client_Search( ptr );
285 Channel_Join( c, channame );
286 chan = Channel_Search( channame );
287 assert( chan != NULL );
289 if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
290 if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
292 /* im Channel bekannt machen */
293 IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
295 /* Channel-User-Modes setzen */
296 strcpy( modes, Channel_UserModes( chan, c ));
299 /* Modes im Channel bekannt machen */
300 IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
303 else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
305 /* naechsten Nick suchen */
306 ptr = strtok( NULL, "," );
309 /* an andere Server weiterleiten */
310 IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
317 IRC_SQUIT( CLIENT *Client, REQUEST *Req )
320 CHAR msg[LINE_LEN + 64];
322 assert( Client != NULL );
323 assert( Req != NULL );
325 /* SQUIT ist nur fuer Server erlaubt */
326 if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
328 /* Falsche Anzahl Parameter? */
329 if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
331 Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
333 /* SQUIT an alle Server weiterleiten */
334 IRC_WriteStrServers( Client, "SQUIT %s :%s", Req->argv[0], Req->argv[1] );
336 target = Client_Search( Req->argv[0] );
339 /* Den Server kennen wir nicht (mehr), also nichts zu tun. */
340 Log( LOG_WARNING, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
344 if( Req->argv[1][0] )
346 if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
347 sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
349 else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
351 if( Client_Conn( target ) > NONE )
353 /* dieser Server hat die Connection */
354 if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
355 else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
360 /* Verbindung hielt anderer Server */
361 Client_Destroy( target, msg, Req->argv[1], FALSE );