- begonnen, Channels zu implementieren :-)

src/ngircd/channel.c

@@ -9,11 +9,14 @@
  * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
  * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
  *
- * $Id: channel.c,v 1.4 2002/01/16 22:09:07 alex Exp $
+ * $Id: channel.c,v 1.5 2002/01/21 00:12:29 alex Exp $
  *
  * channel.c: Management der Channels
  *
  * $Log: channel.c,v $
+ * Revision 1.5  2002/01/21 00:12:29  alex
+ * - begonnen, Channels zu implementieren :-)
+ *
  * Revision 1.4  2002/01/16 22:09:07  alex
  * - neue Funktion Channel_Count().
  *
@@ -27,7 +30,6 @@
  *
  * Revision 1.1  2001/12/14 08:13:43  alex
  * - neues Modul begonnen :-)
- *
  */
 
 
@@ -36,29 +38,343 @@
 
 #include <imp.h>
 #include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "client.h"
+#include "irc.h"
+#include "log.h"
+#include "messages.h"
 
 #include <exp.h>
 #include "channel.h"
 
 
+typedef struct _CHANNEL
+{
+	struct _CHANNEL *next;
+	CHAR name[CHANNEL_NAME_LEN];	/* Name des Channel */
+	CHAR modes[CHANNEL_MODE_LEN];	/* Channel-Modes */
+} CHANNEL;
+
+
+typedef struct _CLIENT2CHAN
+{
+	struct _CLIENT2CHAN *next;
+	CLIENT *client;
+	CHANNEL *channel;
+	CHAR modes[CHANNEL_MODE_LEN];	/* User-Modes in dem Channel */
+} CL2CHAN;
+
+
 LOCAL CHANNEL *My_Channels;
+LOCAL CL2CHAN *My_Cl2Chan;
+
+
+LOCAL CHANNEL *Get_Chan( CHAR *Name );
+LOCAL CHANNEL *New_Chan( CHAR *Name );
+LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client );
+LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client );
+LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason );
+LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan );
+LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan );
+LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan );
 
 
 GLOBAL VOID Channel_Init( VOID )
 {
 	My_Channels = NULL;
+	My_Cl2Chan = NULL;
 } /* Channel_Init */
 
 
 GLOBAL VOID Channel_Exit( VOID )
 {
+	CHANNEL *c, *c_next;
+	CL2CHAN *cl2chan, *cl2chan_next;
+	
+	/* Channel-Strukturen freigeben */
+	c = My_Channels;
+	while( c )
+	{
+		c_next = c->next;
+		free( c );
+		c = c_next;
+	}
+
+	/* Channel-Zuordnungstabelle freigeben */
+	cl2chan = My_Cl2Chan;
+	while( c )
+	{
+		cl2chan_next = cl2chan->next;
+		free( cl2chan );
+		cl2chan = cl2chan_next;
+	}
 } /* Channel_Exit */
 
 
+GLOBAL BOOLEAN Channel_Join( CLIENT *Client, CHAR *Name )
+{
+	CHANNEL *chan;
+	
+	assert( Client != NULL );
+	assert( Name != NULL );
+
+	/* Valider Channel-Name? */
+	if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN ))
+	{
+		IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
+		return FALSE;
+	}
+
+	/* Channel suchen */
+	chan = Get_Chan( Name );
+	if( chan )
+	{
+		/* Ist der Client bereits Mitglied? */
+		if( Get_Cl2Chan( chan, Client )) return FALSE;
+	}
+	else
+	{
+		/* Gibt es noch nicht? Dann neu anlegen: */
+		chan = New_Chan( Name );
+		if( ! chan ) return FALSE;
+
+		/* Verketten */
+		chan->next = My_Channels;
+		My_Channels = chan;
+	}
+
+	/* User dem Channel hinzufuegen */
+	if( ! Add_Client( chan, Client )) return FALSE;
+	else return TRUE;
+} /* Channel_Join */
+
+
+GLOBAL BOOLEAN Channel_Part( CLIENT *Client, CLIENT *Origin, CHAR *Name, CHAR *Reason )
+{
+	CHANNEL *chan;
+
+	assert( Client != NULL );
+	assert( Name != NULL );
+
+	/* Channel suchen */
+	chan = Get_Chan( Name );
+	if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client )))
+	{
+		IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name );
+		return FALSE;
+	}
+
+	/* User aus Channel entfernen */
+	if( ! Remove_Client( chan, Client, Origin, Reason )) return FALSE;
+	else return TRUE;
+} /* Channel_Part */
+
+
+GLOBAL VOID Channel_RemoveClient( CLIENT *Client, CHAR *Reason )
+{
+	CHANNEL *c, *next_c;
+
+	assert( Client != NULL );
+
+	c = My_Channels;
+	while( c )
+	{
+		next_c = c->next;
+		Remove_Client( c, Client, Client_ThisServer( ), Reason );
+		c = next_c;
+	}
+} /* Channel_RemoveClient */
+
+
 GLOBAL INT Channel_Count( VOID )
 {
-	return 0;
+	CHANNEL *c;
+	INT count;
+	
+	count = 0;
+	c = My_Channels;
+	while( c )
+	{
+		count++;
+		c = c->next;
+	}
+	return count;
 } /* Channel_Count */
 
 
+LOCAL CHANNEL *Get_Chan( CHAR *Name )
+{
+	/* Channel-Struktur suchen */
+	
+	CHANNEL *c;
+
+	assert( Name != NULL );
+	c = My_Channels;
+	while( c )
+	{
+		if( strcasecmp( Name, c->name ) == 0 ) return c;
+		c = c->next;
+	}
+	return NULL;
+} /* Get_Chan */
+
+
+LOCAL CHANNEL *New_Chan( CHAR *Name )
+{
+	/* Neue Channel-Struktur anlegen */
+	
+	CHANNEL *c;
+
+	assert( Name != NULL );
+	
+	c = malloc( sizeof( CHANNEL ));
+	if( ! c )
+	{
+		Log( LOG_EMERG, "Can't allocate memory!" );
+		return NULL;
+	}
+	c->next = NULL;
+	strncpy( c->name, Name, CHANNEL_NAME_LEN );
+	c->name[CHANNEL_NAME_LEN - 1] = '\0';
+	strcpy( c->modes, "" );
+
+	Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name );
+	
+	return c;
+} /* New_Chan */
+
+
+LOCAL CL2CHAN *Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
+{
+	CL2CHAN *cl2chan;
+
+	assert( Chan != NULL );
+	assert( Client != NULL );
+
+	cl2chan = My_Cl2Chan;
+	while( cl2chan )
+	{
+		if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
+		cl2chan = cl2chan->next;
+	}
+	return NULL;
+} /* Get_Cl2Chan */
+
+
+LOCAL CL2CHAN *Add_Client( CHANNEL *Chan, CLIENT *Client )
+{
+	CL2CHAN *cl2chan;
+
+	assert( Chan != NULL );
+	assert( Client != NULL );
+
+	cl2chan = malloc( sizeof( CL2CHAN ));
+	if( ! cl2chan )
+	{
+		Log( LOG_EMERG, "Can't allocate memory!" );
+		return NULL;
+	}
+	cl2chan->channel = Chan;
+	cl2chan->client = Client;
+
+	/* Verketten */
+	cl2chan->next = My_Cl2Chan;
+	My_Cl2Chan = cl2chan;
+	
+	return cl2chan;
+} /* Add_Client */
+
+
+LOCAL BOOLEAN Remove_Client( CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, CHAR *Reason )
+{
+	CL2CHAN *cl2chan, *last_cl2chan;
+	CHANNEL *c;
+	
+	assert( Chan != NULL );
+	assert( Client != NULL );
+	assert( Origin != NULL );
+	assert( Reason != NULL );
+
+	last_cl2chan = NULL;
+	cl2chan = My_Cl2Chan;
+	while( cl2chan )
+	{
+		if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
+		last_cl2chan = cl2chan;
+		cl2chan = cl2chan->next;
+	}
+	if( ! cl2chan ) return FALSE;
+
+	c = cl2chan->channel;
+	assert( c != NULL );
+
+	/* Aus Verkettung loesen und freigeben */
+	if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
+	else My_Cl2Chan = cl2chan->next;
+	free( cl2chan );
+
+	IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason );
+	IRC_WriteStrRelatedChannelPrefix( Origin, c->name, Client, "PART %s :%s", c->name, Reason );
+
+	Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason );
+
+	/* Wenn Channel nun leer: loeschen */
+	if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
+		
+	return TRUE;
+} /* Remove_Client */
+
+
+LOCAL CL2CHAN *Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
+{
+	return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
+} /* Get_First_Cl2Chan */
+
+
+LOCAL CL2CHAN *Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
+{
+	CL2CHAN *cl2chan;
+
+	assert( Client != NULL || Channel != NULL );
+	
+	cl2chan = Start;
+	while( cl2chan )
+	{
+		if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
+		if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
+		cl2chan = cl2chan->next;
+	}
+	return NULL;
+} /* Get_Next_Cl2Chan */
+
+
+LOCAL BOOLEAN Delete_Channel( CHANNEL *Chan )
+{
+	/* Channel-Struktur loeschen */
+	
+	CHANNEL *chan, *last_chan;
+
+	last_chan = NULL;
+	chan = My_Channels;
+	while( chan )
+	{
+		if( chan == Chan ) break;
+		last_chan = chan;
+		chan = chan->next;
+	}
+	if( ! chan ) return FALSE;
+
+	Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name );
+
+	/* Neu verketten und freigeben */
+	if( last_chan ) last_chan->next = chan->next;
+	else My_Channels = chan->next;
+	free( chan );
+		
+	return TRUE;
+} /* Delete_Channel */
+
+
 /* -eof- */