diff --git a/ag/include/char.inc.php b/ag/include/char.inc.php
index e1b25fe..710629a 100644
--- a/ag/include/char.inc.php
+++ b/ag/include/char.inc.php
@@ -297,7 +297,7 @@ function getAttacksforChar($charid, $mode = 0) {
 //	$sql = 'select a.name, a.id, a.level, if(find_in_set(\'0\', req_atk) = 0, a.req_atk, substr(a.req_atk, 1, locate(\',0\', a.req_atk) - 1)) as req_atk , geld, ifnull((select l.benutzt from lernen l where l.besitzer = '.$char['id'].' and at_id = a.id),0) as benutzt, a.id not in (select l.at_id from lernen l where l.besitzer = '.$char['id'].') as unknown from attacken a where find_in_set('.$char_race.', a.rassen) order by level';
 
 	$sql_append = '';
-	
+
 	if($char['frucht'] !== NULL) {
 		$sql_append1 = ' OR (frucht = (Select id from wochen_markt where item = \''.$char['frucht'].'\')) ';
 		$sql_append2 = ' AND (frucht <> (Select id from wochen_markt where item = \''.$char['frucht'].'\')) ';
@@ -310,7 +310,7 @@ function getAttacksforChar($charid, $mode = 0) {
 
 	// make a union out of both (TODO: maybe an outer join would result into the same result)
 	$sql = '('.$sql.') union distinct ('.$sql2.') order by level';
-	
+
 	$qry = mysql_query($sql);
 	if($qry === FALSE) // print sql on error
 		echo '<br>'.$sql.'<br>';
@@ -380,5 +380,14 @@ function getAttacksforChar($charid, $mode = 0) {
 	return $overview;
 }
 
+/**
+ * This function reads out the attack set of the char
+ * @param string $name
+ * @param int $char_id
+ */
+function getAttackenSet($name, $char_id) {
+	// TODO: Further implementation
+	return NULL;
+}
 
 ?>
diff --git a/ag/include/clan.inc.php b/ag/include/clan.inc.php
index 3b8d03f..d5e6045 100644
--- a/ag/include/clan.inc.php
+++ b/ag/include/clan.inc.php
@@ -78,4 +78,33 @@ function inviteUser(array $user, $userid, array $clan = NULL){
 	}
 }
 
+
+
+function challengeClan(array $user, array $charids, $clanid, $validTime = 24) {
+	if($clan === NULL) {
+		$qry = mysql_query('Select * from clan where id = ' . $user['clan']);
+		$clan = mysql_fetch_assoc($qry);
+	}
+
+	if($clan['leader'] != $user['id'] && $clan['co_leader'] != $user['id']){
+		return 'Nur der Leader, bzw. der Co-Leader kann andere Clans herausfordern!!';
+	}
+	// TODO: Further implementation
+	return NULL;
+}
+
+function acceptChallenge(array $user, array $charids) {
+	if($clan === NULL) {
+		$qry = mysql_query('Select * from clan where id = ' . $user['clan']);
+		$clan = mysql_fetch_assoc($qry);
+	}
+
+	if($clan['leader'] != $user['id'] && $clan['co_leader'] != $user['id']){
+		return 'Nur der Leader, bzw. der Co-Leader kann herausforderungen anderer Clans annehmen!!';
+	}
+	// TODO: Further implementation
+	return NULL;
+
+}
+
 ?>
\ No newline at end of file