diff -uNra NewsCache-1.2rc6/acconfig.h NewsCache/acconfig.h
--- NewsCache-1.2rc6/acconfig.h	2004-06-15 20:41:04.000000000 +0200
+++ NewsCache/acconfig.h	2006-08-09 13:24:53.000000000 +0200
@@ -25,6 +25,7 @@
 #undef WITH_UNIQUE_PACKAGE_NAME
 #undef WITH_LIBGPP
 #undef WITH_SYSLOG
+#undef WITH_LDAP
 #undef WITH_EXCEPTIONS
 #undef SYSCONFDIR
 #ifdef WITH_EXCEPTIONS
diff -uNra NewsCache-1.2rc6/configure.in NewsCache/configure.in
--- NewsCache-1.2rc6/configure.in	2004-09-28 21:10:47.000000000 +0200
+++ NewsCache/configure.in	2006-08-09 13:24:53.000000000 +0200
@@ -5,7 +5,7 @@
 AM_CONFIG_HEADER(config.h)
 
 dnl Initialize automake stuff
-AM_INIT_AUTOMAKE(NewsCache, 1.2rc6)
+AM_INIT_AUTOMAKE(NewsCache, 1.2rc7)
 
 AC_DEFUN([AC_PROG_CXX_EXCEPTIONS],[])
 
@@ -96,6 +96,14 @@
 fi,
 )
 
+AC_ARG_WITH(ldap, [  --with-ldap            with ldap check [default=no]],
+if eval " test x$with_uniquenames = xno"; then
+  AC_DEFINE(WITH_LDAP)
+  fi,
+)
+  
+
+
 AC_DEFINE(PACKAGE_NEWSCACHECLEAN,"NewsCacheClean")
 AC_DEFINE(PACKAGE_UPDATENEWS,"updatenews")
 
@@ -296,6 +304,11 @@
   with_shadow=yes
 fi
 
+if eval "test x$with_ldap = xyes"; then
+  AC_CHECK_LIB(ldap, ldap_open, LIBS="$LIBS -lldap",
+                   AC_MSG_RESULT([Can't find libldap]);exit 1)
+fi
+
 
 dnl ****************************************************************
 dnl Generate output files
diff -uNra NewsCache-1.2rc6/README NewsCache/README
--- NewsCache-1.2rc6/README	2004-06-15 20:41:04.000000000 +0200
+++ NewsCache/README	2006-08-09 14:31:45.000000000 +0200
@@ -113,3 +113,14 @@
 
 The latest release is always available from 
 http://members.aon.at/hstraub/linux/newscache/
+
+
+Das ist die Open-News-Network Version mit ldap Support.
+benötigt libldap
+In der newscache.conf ist dann folgender Eintrag möglich
+ Default {
+     Authentication ldap:auth.open-news-network.org:debug
+
+       }
+       
+
diff -uNra NewsCache-1.2rc6/src/ldapconfig.h NewsCache/src/ldapconfig.h
--- NewsCache-1.2rc6/src/ldapconfig.h	1970-01-01 01:00:00.000000000 +0100
+++ NewsCache/src/ldapconfig.h	2006-08-09 13:24:53.000000000 +0200
@@ -0,0 +1,13 @@
+/* change these for your setup */
+#define LDAPSEARCH_BASE "dc=open-news-network,dc=org"
+
+#define LDAPPORT 389
+/* this is what stdin gets from newsreader */
+#define NAMESTR "ClientAuthname: "
+#define PASSSTR "ClientPassword: "
+
+#ifdef LDAP_SUCCESS
+#undef LDAP_SUCCESS
+#endif
+#define LDAP_SUCCESS 0
+extern "C" LDAP *ldap_open(LDAP_CONST char *ldaphost,  int portno);
diff -uNra NewsCache-1.2rc6/src/NewsCache.cc NewsCache/src/NewsCache.cc
--- NewsCache-1.2rc6/src/NewsCache.cc	2004-06-28 10:49:25.000000000 +0200
+++ NewsCache/src/NewsCache.cc	2006-08-09 14:31:45.000000000 +0200
@@ -80,9 +80,27 @@
 #ifdef WITH_UNIQUE_PACKAGE_NAME
 	"--with-uniquenames",
 #endif
+#ifdef WITH_LDAP
+	"--with-ldap",
+#endif
 	NULL
 };
 
+//#ifdef WITH_LDAP
+#include <strings.h>
+#include <stdio.h>
+#include <errno.h>
+#include <lber.h>
+#include <ldap.h>
+#include "ldapconfig.h"
+
+extern "C" int ldap_simple_bind_s(LDAP *ld, LDAP_CONST char *dn, LDAP_CONST char *passwd);
+extern "C" int ldap_bind(LDAP *ld, LDAP_CONST char *dn, LDAP_CONST char *cred,  int method);
+extern "C" int ldap_bind_s(LDAP *ld, LDAP_CONST char *dn, LDAP_CONST char *cred, int method);
+
+
+//#endif
+
 using namespace std;
 
 #ifdef HAVE_LIBWRAP
@@ -440,6 +458,46 @@
 	return NULL;
 }
 
+
+//#ifdef WITH_LDAP
+int ldap_pwd_ok ( const char *ldaphost, char *user, char *passwd) {
+        //char ldaphost[]="localhost";
+        LDAP *           ld;
+	int              port     = LDAP_PORT;
+	char *           base_dn  = LDAPSEARCH_BASE;
+        char userdn[512];
+
+        snprintf(userdn, 511, "uid=%s,%s", user, base_dn);
+
+        if (( ld = ldap_open( ldaphost,port)) == NULL ) {
+		  slog.p(Logger::Debug) << "cannot open "
+			<< ldaphost 
+			<< "for authbind \n";
+                return(0);
+        }
+
+ 	slog.p(Logger::Debug) <<  " binding as " 
+		<< userdn 
+		<< " at " 
+		<< ldaphost 
+		<< "\n";
+
+        if ( ldap_simple_bind_s( ld, userdn,  passwd ) != LDAP_SUCCESS ) {
+                /* invalid credentials */
+                /*ldap_perror( ld, "ldap_fsearch" );*/
+                   slog.p(Logger::Debug)  << user 
+			<< " not authenticated with "
+			<< passwd
+			<< "\n";
+                return(0);
+        }
+        return(1);
+}
+//#endif /* WITH_LDAP */
+
+
+
+
 int auto_cryptcheck(const char *key, const char *pass)
 {
 #ifdef MD5_AUTO
@@ -505,6 +563,38 @@
 	return 0;
 }
 
+/**
+* check_auth_ldap code by Arnold Schiller schiller@babsi.de
+* need 
+* ldap_pwd_ok.c written over a crate of beer by Keith Lewis (monash.edu.au) 
+*
+**/
+//#ifdef WITH_LDAP
+int check_auth_ldap (ClientData *clt)
+{
+	AccessEntry *access_entry = clt->access_entry;
+        string type("ldap:");
+        	
+        if (access_entry->authentication.typeEqual (type))
+                return -1;
+        string ldaphost = access_entry->authentication.getField(1);         
+        string user = clt->auth_user;
+	string pass = clt->auth_pass;
+        if(ldap_pwd_ok(ldaphost.c_str(), clt->auth_user, clt->auth_pass)) {
+     	   slog.p(Logger::Info) <<  "check_auth_ldap valid passwd User: "
+	 	<< clt->auth_user << "\n";
+         	return 0;
+    	 }else{
+	    slog.p(Logger::Info) <<  "check_auth_ldap invalid passwd User: "
+		     << clt->auth_user << "\n";
+     	  return -1;
+    	 }
+ 	return 0;
+
+
+}
+//#endif /* WITH_LDAP */
+
 int check_auth_file (ClientData *clt)
 {
 	AccessEntry *access_entry = clt->access_entry;
@@ -748,6 +838,13 @@
 		return check_auth_pam (clt);
 	}
 #endif				/* #ifndef PAM_AUTH */
+       else if (!strncmp
+                       ((access_entry->authentication.getType()).c_str(),
+                                         "ldap", 3)) {
+                return check_auth_ldap (clt);
+      }
+                                                                
+			
 	// auth_{deny,none} is handled in nnrpd()
 	return -1;
 }