X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fconn-func.c;h=c14a56ae2a28fe60f1549fd5b82ce851ebdfe191;hp=61516d68c6f34da4eb0f4d2065a1a40f30e77175;hb=HEAD;hpb=8adff5922376676c2eeb49de1cbab86cc345b887

diff --git a/src/ngircd/conn-func.c b/src/ngircd/conn-func.c
index 61516d68..c14a56ae 100644
--- a/src/ngircd/conn-func.c
+++ b/src/ngircd/conn-func.c
@@ -1,128 +1,151 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2018 Alexander Barton (alex@barton.de) and Contributors.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  * Please read the file COPYING, README and AUTHORS for more information.
- *
- * Connection management: Global functions
  */
 
-
 #define CONN_MODULE
 
 #include "portab.h"
 
-static char UNUSED id[] = "$Id: conn-func.c,v 1.4 2005/03/19 18:43:48 fw Exp $";
+/**
+ * @file
+ * Connection management: Global functions
+ */
 
-#include "imp.h"
 #include <assert.h>
-#include <log.h>
+#include <time.h>
 
+#include "log.h"
 #include "conn.h"
-
-#include "exp.h"
+#include "conf.h"
 #include "conn-func.h"
 
-
+/**
+ * Update "idle timestamp", the time of the last visible user action
+ * (e. g. like sending messages, joining or leaving channels).
+ *
+ * @param Idx Connection index.
+ */
 GLOBAL void
-Conn_UpdateIdle( CONN_ID Idx )
+Conn_UpdateIdle(CONN_ID Idx)
 {
-	/* Idle-Timer zuruecksetzen */
+	assert(Idx > NONE);
+	My_Connections[Idx].lastprivmsg = time(NULL);
+}
 
-	assert( Idx > NONE );
-	My_Connections[Idx].lastprivmsg = time( NULL );
+/**
+ * Update "ping timestamp", the time of the last outgoing PING request.
+ *
+ * the value 0 signals a newly connected client including servers during the
+ * initial "server burst"; and 1 means that no PONG is pending for a PING.
+ *
+ * @param Idx Connection index.
+ * @param TimeStamp 0, 1, or time stamp.
+ */
+GLOBAL void
+Conn_UpdatePing(CONN_ID Idx, time_t TimeStamp)
+{
+	assert(Idx > NONE);
+	My_Connections[Idx].lastping = TimeStamp;
 }
 
+/*
+ * Get signon time of a connection.
+ */
+GLOBAL time_t
+Conn_GetSignon(CONN_ID Idx)
+{
+	assert(Idx > NONE);
+	return My_Connections[Idx].signon;
+}
 
 GLOBAL time_t
 Conn_GetIdle( CONN_ID Idx )
 {
-	/* Idle-Time einer Verbindung liefern (in Sekunden) */
-
+	/* Return Idle-Timer of a connection */
 	assert( Idx > NONE );
 	return time( NULL ) - My_Connections[Idx].lastprivmsg;
 } /* Conn_GetIdle */
 
-
 GLOBAL time_t
 Conn_LastPing( CONN_ID Idx )
 {
-	/* Zeitpunkt des letzten PING liefern */
-
 	assert( Idx > NONE );
 	return My_Connections[Idx].lastping;
 } /* Conn_LastPing */
 
-
+/**
+ * Add "penalty time" for a connection.
+ *
+ * During the "penalty time" the socket is ignored completely, no new data
+ * is read. This function only increases the penalty, it is not possible to
+ * decrease the penalty time.
+ *
+ * @param Idx Connection index.
+ * @param Seconds Seconds to add.
+ * @see Conn_ResetPenalty
+ */
 GLOBAL void
-Conn_SetPenalty( CONN_ID Idx, time_t Seconds )
+Conn_SetPenalty(CONN_ID Idx, time_t Seconds)
 {
-	/* Penalty-Delay fuer eine Verbindung (in Sekunden) setzen;
-	 * waehrend dieser Zeit wird der entsprechende Socket vom Server
-	 * bei Lese-Operationen komplett ignoriert. Der Delay kann mit
-	 * dieser Funktion nur erhoeht, nicht aber verringert werden. */
-	
 	time_t t;
-	
-	assert( Idx > NONE );
-	assert( Seconds >= 0 );
 
-	t = time( NULL ) + Seconds;
-	if( t > My_Connections[Idx].delaytime ) My_Connections[Idx].delaytime = t;
-} /* Conn_SetPenalty */
+	assert(Idx > NONE);
+	assert(Seconds >= 0);
 
+	/* Limit new penalty to maximum configured, when less than 10 seconds. *
+	   The latter is used to limit brute force attacks, therefore we don't *
+	   want to limit that! */
+	if (Conf_MaxPenaltyTime >= 0
+	    && Seconds > Conf_MaxPenaltyTime
+	    && Seconds < 10)
+		Seconds = Conf_MaxPenaltyTime;
 
-GLOBAL void
-Conn_ResetPenalty( CONN_ID Idx )
-{
-	assert( Idx > NONE );
-	My_Connections[Idx].delaytime = 0;
-} /* Conn_ResetPenalty */
+	t = time(NULL);
+	if (My_Connections[Idx].delaytime < t)
+		My_Connections[Idx].delaytime = t;
 
+	My_Connections[Idx].delaytime += Seconds;
+
+	LogDebug("Add penalty time on connection %d: %ld second%s, total %ld second%s.",
+	    Idx, (long)Seconds, Seconds != 1 ? "s" : "",
+	    My_Connections[Idx].delaytime - t,
+	    My_Connections[Idx].delaytime - t != 1 ? "s" : "");
+} /* Conn_SetPenalty */
 
 GLOBAL void
 Conn_ClearFlags( void )
 {
-	/* Alle Connection auf "nicht-markiert" setzen */
-
 	CONN_ID i;
 
 	for( i = 0; i < Pool_Size; i++ ) My_Connections[i].flag = 0;
 } /* Conn_ClearFlags */
 
-
 GLOBAL int
 Conn_Flag( CONN_ID Idx )
 {
-	/* Ist eine Connection markiert (true) oder nicht? */
-
 	assert( Idx > NONE );
 	return My_Connections[Idx].flag;
 } /* Conn_Flag */
 
-
 GLOBAL void
 Conn_SetFlag( CONN_ID Idx, int Flag )
 {
-	/* Connection markieren */
-
 	assert( Idx > NONE );
 	My_Connections[Idx].flag = Flag;
 } /* Conn_SetFlag */
 
-
 GLOBAL CONN_ID
 Conn_First( void )
 {
-	/* Connection-Struktur der ersten Verbindung liefern;
-	 * Ist keine Verbindung vorhanden, wird NONE geliefert. */
-
 	CONN_ID i;
-	
+
 	for( i = 0; i < Pool_Size; i++ )
 	{
 		if( My_Connections[i].sock != NONE ) return i;
@@ -130,17 +153,13 @@ Conn_First( void )
 	return NONE;
 } /* Conn_First */
 
-
 GLOBAL CONN_ID
 Conn_Next( CONN_ID Idx )
 {
-	/* Naechste Verbindungs-Struktur liefern; existiert keine
-	 * weitere, so wird NONE geliefert. */
-
 	CONN_ID i = NONE;
 
 	assert( Idx > NONE );
-	
+
 	for( i = Idx + 1; i < Pool_Size; i++ )
 	{
 		if( My_Connections[i].sock != NONE ) return i;
@@ -148,117 +167,125 @@ Conn_Next( CONN_ID Idx )
 	return NONE;
 } /* Conn_Next */
 
-
-GLOBAL void
-Conn_SetOption( CONN_ID Idx, int Option )
-{
-	/* Option fuer Verbindung setzen.
-	 * Initial sind alle Optionen _nicht_ gesetzt. */
-
-	assert( Idx > NONE );
-	assert( Option != 0 );
-
-	My_Connections[Idx].options |= Option;
-} /* Conn_SetOption */
-
-
-GLOBAL void
-Conn_UnsetOption( CONN_ID Idx, int Option )
-{
-	/* Option fuer Verbindung loeschen */
-
-	assert( Idx > NONE );
-	assert( Option != 0 );
-
-	My_Connections[Idx].options &= ~Option;
-} /* Conn_UnsetOption */
-
-
-GLOBAL int
+GLOBAL UINT16
 Conn_Options( CONN_ID Idx )
 {
 	assert( Idx > NONE );
 	return My_Connections[Idx].options;
 } /* Conn_Options */
 
+/**
+ * Set connection option.
+ */
+GLOBAL void
+Conn_SetOption(CONN_ID Idx, int Option)
+{
+	assert(Idx > NONE);
+	Conn_OPTION_ADD(&My_Connections[Idx], Option);
+} /* Conn_SetOption */
 
+/**
+ * Get the start time of the connection.
+ * The result is the start time in seconds since 1970-01-01, as reported
+ * by the C function time(NULL).
+ */
 GLOBAL time_t
 Conn_StartTime( CONN_ID Idx )
 {
-	/* Zeitpunkt des Link-Starts liefern (in Sekunden) */
+	CLIENT *c;
 
-	assert( Idx > NONE );
-	return My_Connections[Idx].starttime;
-} /* Conn_Uptime */
+	assert(Idx > NONE);
 
+	/* Search client structure for this link ... */
+	c = Conn_GetClient(Idx);
+	if(c != NULL)
+		return Client_StartTime(c);
 
-GLOBAL int
+	return 0;
+} /* Conn_StartTime */
+
+/**
+ * return number of bytes queued for writing
+ */
+GLOBAL size_t
 Conn_SendQ( CONN_ID Idx )
 {
-	/* Laenge der Daten im Schreibbuffer liefern */
-
 	assert( Idx > NONE );
 #ifdef ZLIB
-	if( My_Connections[Idx].options & CONN_ZIP ) return My_Connections[Idx].zip.wdatalen;
+	if( My_Connections[Idx].options & CONN_ZIP )
+		return array_bytes(&My_Connections[Idx].zip.wbuf);
 	else
 #endif
-	return My_Connections[Idx].wdatalen;
+	return array_bytes(&My_Connections[Idx].wbuf);
 } /* Conn_SendQ */
 
-
+/**
+ * return number of messages sent on this connection so far
+ */
 GLOBAL long
 Conn_SendMsg( CONN_ID Idx )
 {
-	/* Anzahl gesendeter Nachrichten liefern */
 
 	assert( Idx > NONE );
 	return My_Connections[Idx].msg_out;
 } /* Conn_SendMsg */
 
-
+/**
+ * return number of (uncompressed) bytes sent
+ * on this connection so far
+ */
 GLOBAL long
 Conn_SendBytes( CONN_ID Idx )
 {
-	/* Anzahl gesendeter Bytes (unkomprimiert) liefern */
-
 	assert( Idx > NONE );
 	return My_Connections[Idx].bytes_out;
 } /* Conn_SendBytes */
 
-
-GLOBAL int
+/**
+ * return number of bytes pending in read buffer
+ */
+GLOBAL size_t
 Conn_RecvQ( CONN_ID Idx )
 {
-	/* Laenge der Daten im Lesebuffer liefern */
-
 	assert( Idx > NONE );
 #ifdef ZLIB
-	if( My_Connections[Idx].options & CONN_ZIP ) return My_Connections[Idx].zip.rdatalen;
+	if( My_Connections[Idx].options & CONN_ZIP )
+		return array_bytes(&My_Connections[Idx].zip.rbuf);
 	else
 #endif
-	return My_Connections[Idx].rdatalen;
+	return array_bytes(&My_Connections[Idx].rbuf);
 } /* Conn_RecvQ */
 
-
+/**
+ * return number of messages received on this connection so far
+ */
 GLOBAL long
 Conn_RecvMsg( CONN_ID Idx )
 {
-	/* Anzahl empfangener Nachrichten liefern */
-
 	assert( Idx > NONE );
 	return My_Connections[Idx].msg_in;
 } /* Conn_RecvMsg */
 
-
+/**
+ * return number of (uncompressed) bytes received on this
+ * connection so far
+ */
 GLOBAL long
 Conn_RecvBytes( CONN_ID Idx )
 {
-	/* Anzahl empfangener Bytes (unkomprimiert) liefern */
-
 	assert( Idx > NONE );
 	return My_Connections[Idx].bytes_in;
 } /* Conn_RecvBytes */
 
+/**
+ * Return the remote IP address of this connection as string.
+ */
+GLOBAL const char *
+Conn_IPA(CONN_ID Idx)
+{
+	assert (Idx > NONE);
+	return ng_ipaddr_tostr(&My_Connections[Idx].addr);
+}
 
 GLOBAL void
 Conn_ResetWCounter( void )
@@ -266,12 +293,10 @@ Conn_ResetWCounter( void )
 	WCounter = 0;
 } /* Conn_ResetWCounter */
 
-
 GLOBAL long
 Conn_WCounter( void )
 {
 	return WCounter;
 } /* Conn_WCounter */
 
-
 /* -eof- */