dhcp/dhcp-4.0.0-ldap-configuration.patch

diff -up dhcp-4.0.0/server/Makefile.am.ldap dhcp-4.0.0/server/Makefile.am
--- dhcp-4.0.0/server/Makefile.am.ldap	2007-05-29 06:32:11.000000000 -1000
+++ dhcp-4.0.0/server/Makefile.am	2008-01-14 10:42:59.000000000 -1000
@@ -4,12 +4,10 @@ dist_sysconf_DATA = dhcpd.conf
 sbin_PROGRAMS = dhcpd
 dhcpd_SOURCES = dhcpd.c dhcp.c bootp.c confpars.c db.c class.c failover.c \
 		omapi.c mdb.c stables.c salloc.c ddns.c dhcpleasequery.c \
-		dhcpv6.c mdb6.c
+		dhcpv6.c mdb6.c ldap.c ldap_casa.c
 
-# libomapi.a this is here twice to handle circular library dependencies :(
-dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.a ../dst/libdst.a \
-	      ../dhcpctl/libdhcpctl.a ../minires/libres.a \
-	      ../omapip/libomapi.a
+dhcpd_LDADD = ../common/libdhcp.a ../omapip/libomapi.a ../minires/libres.a \
+	      ../dhcpctl/libdhcpctl.a ../dst/libdstnomd5.a -lldap
 
 man_MANS = dhcpd.8 dhcpd.conf.5 dhcpd.leases.5
 EXTRA_DIST = $(man_MANS)
diff -up dhcp-4.0.0/server/mdb.c.ldap dhcp-4.0.0/server/mdb.c
--- dhcp-4.0.0/server/mdb.c.ldap	2007-11-30 11:51:43.000000000 -1000
+++ dhcp-4.0.0/server/mdb.c	2008-01-14 10:42:59.000000000 -1000
@@ -600,6 +600,12 @@ int find_hosts_by_haddr (struct host_dec
 			 const char *file, int line)
 {
 	struct hardware h;
+	int ret;
+
+#if defined(LDAP_CONFIGURATION)
+	if ((ret = find_haddr_in_ldap (hp, htype, hlen, haddr, file, line)))
+		return ret;
+#endif
 
 	h.hlen = hlen + 1;
 	h.hbuf [0] = htype;
diff -up /dev/null dhcp-4.0.0/server/ldap_casa.c
--- /dev/null	2008-01-11 10:40:59.147013395 -1000
+++ dhcp-4.0.0/server/ldap_casa.c	2008-01-14 10:42:59.000000000 -1000
@@ -0,0 +1,138 @@
+/* ldap_casa.c
+   
+   CASA routines for DHCPD... */
+
+/* Copyright (c) 2004 Internet Systems Consorium, Inc. ("ISC")
+ * Copyright (c) 1995-2003 Internet Software Consortium.
+ * Copyright (c) 2006 Novell, Inc.
+
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met: 
+ * 1.Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer. 
+ * 2.Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution. 
+ * 3.Neither the name of ISC, ISC DHCP, nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission. 
+
+ * THIS SOFTWARE IS PROVIDED BY INTERNET SYSTEMS CONSORTIUM AND CONTRIBUTORS 
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ISC OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+
+ * This file was written by S Kalyanasundaram <skalyanasundaram@novell.com>
+ */
+
+#if defined(LDAP_CASA_AUTH)
+#include "ldap_casa.h"
+#include "dhcpd.h"
+
+int
+load_casa (void)
+{
+       if( !(casaIDK = dlopen(MICASA_LIB,RTLD_LAZY)))
+       	  return 0;
+       p_miCASAGetCredential = (CASA_GetCredential_T) dlsym(casaIDK, "miCASAGetCredential");
+       p_miCASASetCredential = (CASA_SetCredential_T) dlsym(casaIDK, "miCASASetCredential");
+       p_miCASARemoveCredential = (CASA_RemoveCredential_T) dlsym(casaIDK, "miCASARemoveCredential");
+
+       if((p_miCASAGetCredential == NULL) ||
+         (p_miCASASetCredential == NULL) ||
+         (p_miCASARemoveCredential == NULL))
+       {
+          if(casaIDK)
+            dlclose(casaIDK);
+          casaIDK = NULL;
+          p_miCASAGetCredential = NULL;
+          p_miCASASetCredential = NULL;
+          p_miCASARemoveCredential = NULL;
+          return 0;
+       }
+       else
+          return 1;
+}
+
+static void
+release_casa(void)
+{
+   if(casaIDK)
+   {
+      dlclose(casaIDK);
+      casaIDK = NULL;
+   }
+
+   p_miCASAGetCredential = NULL;
+   p_miCASASetCredential = NULL;
+   p_miCASARemoveCredential = NULL;
+
+}
+
+int
+load_uname_pwd_from_miCASA (char **ldap_username, char **ldap_password)
+ {
+   int                     result = 0;
+   uint32_t                credentialtype = SSCS_CRED_TYPE_SERVER_F;
+   SSCS_BASIC_CREDENTIAL   credential;
+   SSCS_SECRET_ID_T        applicationSecretId;
+   char                    *tempVar = NULL;
+
+   const char applicationName[10] = "dhcp-ldap";
+
+   if ( load_casa() )
+   {
+      memset(&credential, 0, sizeof(SSCS_BASIC_CREDENTIAL));
+      memset(&applicationSecretId, 0, sizeof(SSCS_SECRET_ID_T));
+
+      applicationSecretId.len = strlen(applicationName) + 1;
+      memcpy (applicationSecretId.id, applicationName, applicationSecretId.len);
+
+      credential.unFlags = USERNAME_TYPE_CN_F;
+
+      result = p_miCASAGetCredential (0,
+                 &applicationSecretId,NULL,&credentialtype,
+                 &credential,NULL);
+
+      if(credential.unLen)
+      {
+         tempVar = dmalloc (credential.unLen + 1, MDL);
+         if (!tempVar)
+             log_fatal ("no memory for ldap_username");
+         memcpy(tempVar , credential.username, credential.unLen);
+         *ldap_username = tempVar;
+
+         tempVar = dmalloc (credential.pwordLen + 1, MDL);
+         if (!tempVar)
+             log_fatal ("no memory for ldap_password");
+         memcpy(tempVar, credential.password, credential.pwordLen);
+         *ldap_password = tempVar;
+
+#if defined (DEBUG_LDAP)
+         log_info ("Authentication credential taken from CASA");
+#endif
+
+         release_casa();
+         return 1;
+
+        }
+        else
+        {
+            release_casa();
+            return 0;
+        }
+      }
+      else
+          return 0; //casa libraries not loaded
+ }
+
+#endif /* LDAP_CASA_AUTH */
+
diff -up dhcp-4.0.0/server/dhcpd.c.ldap dhcp-4.0.0/server/dhcpd.c
--- dhcp-4.0.0/server/dhcpd.c.ldap	2007-11-30 11:51:43.000000000 -1000
+++ dhcp-4.0.0/server/dhcpd.c	2008-01-14 10:42:59.000000000 -1000
@@ -505,6 +505,14 @@ main(int argc, char **argv) {
 	/* Add the ddns update style enumeration prior to parsing. */
 	add_enumeration (&ddns_styles);
 	add_enumeration (&syslog_enum);
+#if defined (LDAP_CONFIGURATION)
+	add_enumeration (&ldap_methods);
+#if defined (USE_SSL)
+	add_enumeration (&ldap_ssl_usage_enum);
+	add_enumeration (&ldap_tls_reqcert_enum);
+	add_enumeration (&ldap_tls_crlcheck_enum);
+#endif
+#endif
 
 	if (!group_allocate (&root_group, MDL))
 		log_fatal ("Can't allocate root group!");
diff -up /dev/null dhcp-4.0.0/server/ldap.c
--- /dev/null	2008-01-11 10:40:59.147013395 -1000
+++ dhcp-4.0.0/server/ldap.c	2008-01-14 10:42:59.000000000 -1000
@@ -0,0 +1,2004 @@
+/* ldap.c
+
+   Routines for reading the configuration from LDAP */
+
+/*
+ * Copyright (c) 2003-2006 Ntelos, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of The Internet Software Consortium nor the names
+ *    of its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
+ * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This LDAP module was written by Brian Masney <masneyb@ntelos.net>. Its
+ * development was sponsored by Ntelos, Inc. (www.ntelos.com).
+ */
+
+#include "dhcpd.h"
+#include <signal.h>
+#include <errno.h>
+
+#if defined(LDAP_CONFIGURATION)
+
+#if defined(LDAP_CASA_AUTH)
+#include "ldap_casa.h"
+#endif
+
+static LDAP * ld = NULL;
+static char *ldap_server = NULL, 
+            *ldap_username = NULL, 
+            *ldap_password = NULL,
+            *ldap_base_dn = NULL,
+            *ldap_dhcp_server_cn = NULL,
+            *ldap_debug_file = NULL;
+static int ldap_port = LDAP_PORT,
+           ldap_method = LDAP_METHOD_DYNAMIC,
+           ldap_referrals = -1,
+           ldap_debug_fd = -1;
+#if defined (USE_SSL)
+static int ldap_use_ssl = -1,        /* try TLS if possible */
+           ldap_tls_reqcert = -1,
+           ldap_tls_crlcheck = -1;
+static char *ldap_tls_ca_file = NULL,
+            *ldap_tls_ca_dir = NULL,
+            *ldap_tls_cert = NULL,
+            *ldap_tls_key = NULL,
+            *ldap_tls_ciphers = NULL,
+            *ldap_tls_randfile = NULL;
+#endif
+static struct ldap_config_stack *ldap_stack = NULL;
+
+typedef struct ldap_dn_node {
+    struct ldap_dn_node *next;
+    size_t refs;
+    char *dn;
+} ldap_dn_node;
+
+static ldap_dn_node *ldap_service_dn_head = NULL;
+static ldap_dn_node *ldap_service_dn_tail = NULL;
+
+
+static char *
+x_strncat(char *dst, const char *src, size_t dst_size)
+{
+  size_t len = strlen(dst);
+  return strncat(dst, src, dst_size > len ? dst_size - len - 1: 0);
+}
+
+static void
+ldap_parse_class (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  x_strncat (cfile->inbuf, "class \"", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, "\" {\n", LDAP_BUFFER_SIZE);
+
+  item->close_brace = 1;
+  ldap_value_free_len (tempbv);
+}
+
+
+static void
+ldap_parse_subclass (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv, **classdata;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  if ((classdata = ldap_get_values_len (ld, item->ldent, 
+                                  "dhcpClassData")) == NULL || 
+      classdata[0] == NULL)
+    {
+      if (classdata != NULL)
+        ldap_value_free_len (classdata);
+      ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  x_strncat (cfile->inbuf, "subclass ", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, classdata[0]->bv_val, LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, " ", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, " {\n", LDAP_BUFFER_SIZE);
+
+  item->close_brace = 1;
+  ldap_value_free_len (tempbv);
+  ldap_value_free_len (classdata);
+}
+
+
+static void
+ldap_parse_host (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv, **hwaddr;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  hwaddr = ldap_get_values_len (ld, item->ldent, "dhcpHWAddress");
+
+  x_strncat (cfile->inbuf, "host ", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+
+  if (hwaddr != NULL && hwaddr[0] != NULL)
+    {
+      x_strncat (cfile->inbuf, " {\nhardware ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, hwaddr[0]->bv_val, LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (hwaddr);
+    }
+
+  item->close_brace = 1;
+  ldap_value_free_len (tempbv);
+}
+
+
+static void
+ldap_parse_shared_network (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  x_strncat (cfile->inbuf, "shared-network \"", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, "\" {\n", LDAP_BUFFER_SIZE);
+
+  item->close_brace = 1;
+  ldap_value_free_len (tempbv);
+}
+
+
+static void
+parse_netmask (int netmask, char *netmaskbuf)
+{
+  unsigned long nm;
+  int i;
+
+  nm = 0;
+  for (i=1; i <= netmask; i++)
+    {
+      nm |= 1 << (32 - i);
+    }
+
+  sprintf (netmaskbuf, "%d.%d.%d.%d", (int) (nm >> 24) & 0xff, 
+                                      (int) (nm >> 16) & 0xff, 
+                                      (int) (nm >> 8) & 0xff, 
+                                      (int) nm & 0xff);
+}
+
+
+static void
+ldap_parse_subnet (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv, **netmaskstr;
+  char netmaskbuf[16];
+  int i;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  if ((netmaskstr = ldap_get_values_len (ld, item->ldent, 
+                                     "dhcpNetmask")) == NULL || 
+      netmaskstr[0] == NULL)
+    {
+      if (netmaskstr != NULL)
+        ldap_value_free_len (netmaskstr);
+      ldap_value_free_len (tempbv);
+
+      return;
+    }
+
+  x_strncat (cfile->inbuf, "subnet ", LDAP_BUFFER_SIZE);
+  x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+
+  x_strncat (cfile->inbuf, " netmask ", LDAP_BUFFER_SIZE);
+  parse_netmask (strtol (netmaskstr[0]->bv_val, NULL, 10), netmaskbuf);
+  x_strncat (cfile->inbuf, netmaskbuf, LDAP_BUFFER_SIZE);
+
+  x_strncat (cfile->inbuf, " {\n", LDAP_BUFFER_SIZE);
+
+  ldap_value_free_len (tempbv);
+  ldap_value_free_len (netmaskstr);
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpRange")) != NULL)
+    {
+      for (i=0; tempbv[i] != NULL; i++)
+        {
+          x_strncat (cfile->inbuf, "range", LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, " ", LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, tempbv[i]->bv_val, LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+        }
+    }
+
+  item->close_brace = 1;
+}
+
+
+static void
+ldap_parse_pool (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv;
+  int i;
+
+  x_strncat (cfile->inbuf, "pool {\n", LDAP_BUFFER_SIZE);
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpRange")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "range", LDAP_BUFFER_SIZE);
+      for (i=0; tempbv[i] != NULL; i++)
+        {
+          x_strncat (cfile->inbuf, " ", LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, tempbv[i]->bv_val, LDAP_BUFFER_SIZE);
+        }
+      x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpPermitList")) != NULL)
+    {
+      for (i=0; tempbv[i] != NULL; i++)
+        {
+          x_strncat (cfile->inbuf, tempbv[i]->bv_val, LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+        }
+      ldap_value_free_len (tempbv);
+    }
+
+  item->close_brace = 1;
+}
+
+
+static void
+ldap_parse_group (struct ldap_config_stack *item, struct parse *cfile)
+{
+  x_strncat (cfile->inbuf, "group {\n", LDAP_BUFFER_SIZE);
+  item->close_brace = 1;
+}
+
+
+static void
+ldap_parse_key (struct ldap_config_stack *item, struct parse *cfile)
+{
+  struct berval **tempbv;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "key ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, " {\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpKeyAlgorithm")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "algorithm ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpKeySecret")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "secret ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  item->close_brace = 1;
+}
+
+
+static void
+ldap_parse_zone (struct ldap_config_stack *item, struct parse *cfile)
+{
+  char *cnFindStart, *cnFindEnd;
+  struct berval **tempbv;
+  char *keyCn;
+  size_t len;
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "cn")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "zone ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, " {\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpDnsZoneServer")) != NULL)
+    {
+      x_strncat (cfile->inbuf, "primary ", LDAP_BUFFER_SIZE);
+      x_strncat (cfile->inbuf, tempbv[0]->bv_val, LDAP_BUFFER_SIZE);
+
+      x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, item->ldent, "dhcpKeyDN")) != NULL)
+    {
+      cnFindStart = strchr(tempbv[0]->bv_val,'=');
+      if (cnFindStart != NULL)
+        cnFindEnd = strchr(++cnFindStart,',');
+      else
+        cnFindEnd = NULL;
+
+      if (cnFindEnd != NULL && cnFindEnd > cnFindStart)
+        {
+          len = cnFindEnd - cnFindStart;
+          keyCn = dmalloc (len + 1, MDL);
+        }
+      else
+        {
+          len = 0;
+          keyCn = NULL;
+        }
+
+      if (keyCn != NULL)
+        {
+          strncpy (keyCn, cnFindStart, len);
+          keyCn[len] = '\0';
+
+          x_strncat (cfile->inbuf, "key ", LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, keyCn, LDAP_BUFFER_SIZE);
+          x_strncat (cfile->inbuf, ";\n", LDAP_BUFFER_SIZE);
+
+          dfree (keyCn, MDL);
+        }
+
+      ldap_value_free_len (tempbv);
+     }
+
+  item->close_brace = 1;
+}
+
+
+static void
+add_to_config_stack (LDAPMessage * res, LDAPMessage * ent)
+{
+  struct ldap_config_stack *ns;
+
+  ns = dmalloc (sizeof (*ns), MDL);
+  ns->res = res;
+  ns->ldent = ent;
+  ns->close_brace = 0;
+  ns->processed = 0;
+  ns->next = ldap_stack;
+  ldap_stack = ns;
+}
+
+
+static void
+ldap_stop()
+{
+  struct sigaction old, new;
+
+  if (ld == NULL)
+    return;
+
+  /*
+   ** ldap_unbind after a LDAP_SERVER_DOWN result
+   ** causes a SIGPIPE and dhcpd gets terminated,
+   ** since it doesn't handle it...
+   */
+
+  new.sa_flags   = 0;
+  new.sa_handler = SIG_IGN;
+  sigemptyset (&new.sa_mask);
+  sigaction (SIGPIPE, &new, &old);
+
+  ldap_unbind_ext_s (ld, NULL, NULL);
+  ld = NULL;
+
+  sigaction (SIGPIPE, &old, &new);
+}
+
+
+static char *
+_do_lookup_dhcp_string_option (struct option_state *options, int option_name)
+{
+  struct option_cache *oc;
+  struct data_string db;
+  char *ret;
+
+  memset (&db, 0, sizeof (db));
+  oc = lookup_option (&server_universe, options, option_name);
+  if (oc &&
+      evaluate_option_cache (&db, (struct packet*) NULL,
+                             (struct lease *) NULL,
+                             (struct client_state *) NULL, options,
+                             (struct option_state *) NULL,
+                             &global_scope, oc, MDL) &&
+      db.data != NULL && *db.data != '\0')
+
+    {
+      ret = dmalloc (db.len + 1, MDL);
+      if (ret == NULL)
+        log_fatal ("no memory for ldap option %d value", option_name);
+
+      memcpy (ret, db.data, db.len);
+      ret[db.len] = 0;
+      data_string_forget (&db, MDL);
+    }
+  else
+    ret = NULL;
+
+  return (ret);
+}
+
+
+static int
+_do_lookup_dhcp_int_option (struct option_state *options, int option_name)
+{
+  struct option_cache *oc;
+  struct data_string db;
+  int ret;
+
+  memset (&db, 0, sizeof (db));
+  oc = lookup_option (&server_universe, options, option_name);
+  if (oc &&
+      evaluate_option_cache (&db, (struct packet*) NULL,
+                             (struct lease *) NULL,
+                             (struct client_state *) NULL, options,
+                             (struct option_state *) NULL,
+                             &global_scope, oc, MDL) &&
+      db.data != NULL && *db.data != '\0')
+    {
+      ret = strtol ((const char *) db.data, NULL, 10);
+      data_string_forget (&db, MDL);
+    }
+  else
+    ret = 0;
+
+  return (ret);
+}
+
+
+static int
+_do_lookup_dhcp_enum_option (struct option_state *options, int option_name)
+{
+  struct option_cache *oc;
+  struct data_string db;
+  int ret = -1;
+
+  memset (&db, 0, sizeof (db));
+  oc = lookup_option (&server_universe, options, option_name);
+  if (oc &&
+      evaluate_option_cache (&db, (struct packet*) NULL,
+                             (struct lease *) NULL,
+                             (struct client_state *) NULL, options,
+                             (struct option_state *) NULL,
+                             &global_scope, oc, MDL) &&
+      db.data != NULL && *db.data != '\0')
+    {
+      if (db.len == 1) 
+        ret = db.data [0];
+      else
+        log_fatal ("invalid option name %d", option_name);
+
+      data_string_forget (&db, MDL);
+    }
+  else
+    ret = 0;
+
+  return (ret);
+}
+
+int
+ldap_rebind_cb (LDAP *ld, LDAP_CONST char *url, ber_tag_t request, ber_int_t msgid, void *parms)
+{
+  int ret;
+  LDAPURLDesc *ldapurl = NULL;
+  char *who = NULL;
+  struct berval creds;
+
+  log_info("LDAP rebind to '%s'", url);
+  if ((ret = ldap_url_parse(url, &ldapurl)) != LDAP_SUCCESS)
+    {
+      log_error ("Error: Can not parse ldap rebind url '%s': %s",
+                 url, ldap_err2string(ret));
+      return ret;
+    }
+
+
+#if defined (USE_SSL)
+  if (strcasecmp(ldapurl->lud_scheme, "ldaps") == 0)
+    {
+      int opt = LDAP_OPT_X_TLS_HARD;
+      if ((ret = ldap_set_option (ld, LDAP_OPT_X_TLS, &opt)) != LDAP_SUCCESS)
+        {
+          log_error ("Error: Cannot init LDAPS session to %s:%d: %s",
+                    ldapurl->lud_host, ldapurl->lud_port, ldap_err2string (ret));
+          return ret;
+        }
+      else
+        {
+          log_info ("LDAPS session successfully enabled to %s", ldap_server);
+        }
+    }
+  else
+  if (strcasecmp(ldapurl->lud_scheme, "ldap") == 0 &&
+      ldap_use_ssl != LDAP_SSL_OFF)
+    {
+      if ((ret = ldap_start_tls_s (ld, NULL, NULL)) != LDAP_SUCCESS)
+        {
+          log_error ("Error: Cannot start TLS session to %s:%d: %s",
+                     ldapurl->lud_host, ldapurl->lud_port, ldap_err2string (ret));
+          return ret;
+        }
+      else
+        {
+          log_info ("TLS session successfully started to %s:%d",
+                    ldapurl->lud_host, ldapurl->lud_port);
+        }
+    }
+#endif
+
+
+  if (ldap_username != NULL || *ldap_username != '\0')
+    {
+      who = ldap_username;
+      creds.bv_val = strdup(ldap_password);
+      creds.bv_len = strlen(ldap_password);
+    }
+
+  if ((ret = ldap_sasl_bind_s (ld, who, LDAP_SASL_SIMPLE, &creds,
+                               NULL, NULL, NULL)) != LDAP_SUCCESS)
+    {
+      log_error ("Error: Cannot login into ldap server %s:%d: %s",
+                 ldapurl->lud_host, ldapurl->lud_port, ldap_err2string (ret));
+    }
+  return ret;
+}
+
+static void
+ldap_start (void)
+{
+  struct option_state *options;
+  int ret, version;
+  char *uri = NULL;
+  struct berval creds;
+
+  if (ld != NULL)
+    return;
+
+  if (ldap_server == NULL)
+    {
+      options = NULL;
+      option_state_allocate (&options, MDL);
+
+      execute_statements_in_scope ((struct binding_value **) NULL,
+                 (struct packet *) NULL, (struct lease *) NULL,
+                 (struct client_state *) NULL, (struct option_state *) NULL,
+                 options, &global_scope, root_group, (struct group *) NULL);
+
+      ldap_server = _do_lookup_dhcp_string_option (options, SV_LDAP_SERVER);
+      ldap_dhcp_server_cn = _do_lookup_dhcp_string_option (options,
+                                                      SV_LDAP_DHCP_SERVER_CN);
+      ldap_port = _do_lookup_dhcp_int_option (options, SV_LDAP_PORT);
+      ldap_base_dn = _do_lookup_dhcp_string_option (options, SV_LDAP_BASE_DN);
+      ldap_method = _do_lookup_dhcp_enum_option (options, SV_LDAP_METHOD);
+      ldap_debug_file = _do_lookup_dhcp_string_option (options,
+                                                       SV_LDAP_DEBUG_FILE);
+      ldap_referrals = _do_lookup_dhcp_enum_option (options, SV_LDAP_REFERRALS);
+
+#if defined (USE_SSL)
+      ldap_use_ssl = _do_lookup_dhcp_enum_option (options, SV_LDAP_SSL);
+      if( ldap_use_ssl != LDAP_SSL_OFF)
+        {
+          ldap_tls_reqcert = _do_lookup_dhcp_enum_option (options, SV_LDAP_TLS_REQCERT);
+          ldap_tls_ca_file = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_CA_FILE);
+          ldap_tls_ca_dir = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_CA_DIR);
+          ldap_tls_cert = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_CERT);
+          ldap_tls_key = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_KEY);
+          ldap_tls_crlcheck = _do_lookup_dhcp_enum_option (options, SV_LDAP_TLS_CRLCHECK);
+          ldap_tls_ciphers = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_CIPHERS);
+          ldap_tls_randfile = _do_lookup_dhcp_string_option (options, SV_LDAP_TLS_RANDFILE);
+        }
+#endif
+
+#if defined (LDAP_CASA_AUTH)
+      if (!load_uname_pwd_from_miCASA(&ldap_username,&ldap_password))
+        {
+#if defined (DEBUG_LDAP)
+          log_info ("Authentication credential taken from file");
+#endif
+#endif
+
+      ldap_username = _do_lookup_dhcp_string_option (options, SV_LDAP_USERNAME);
+      ldap_password = _do_lookup_dhcp_string_option (options, SV_LDAP_PASSWORD);
+
+#if defined (LDAP_CASA_AUTH)
+      }
+#endif
+
+      option_state_dereference (&options, MDL);
+    }
+
+  if (ldap_server == NULL || ldap_base_dn == NULL)
+    {
+      log_info ("Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file");
+      ldap_method = LDAP_METHOD_STATIC;
+      return;
+    }
+
+  if (ldap_debug_file != NULL && ldap_debug_fd == -1)
+    {
+      if ((ldap_debug_fd = open (ldap_debug_file, O_CREAT | O_TRUNC | O_WRONLY,
+                                 S_IRUSR | S_IWUSR)) < 0)
+        log_error ("Error opening debug LDAP log file %s: %s", ldap_debug_file,
+                   strerror (errno));
+    }
+
+#if defined (DEBUG_LDAP)
+  log_info ("Connecting to LDAP server %s:%d", ldap_server, ldap_port);
+#endif
+
+#if defined (USE_SSL)
+  if (ldap_use_ssl == -1)
+    {
+      /*
+      ** There was no "ldap-ssl" option in dhcpd.conf (also not "off").
+      ** Let's try, if we can use an anonymous TLS session without to
+      ** verify the server certificate -- if not continue without TLS.
+      */
+      int opt = LDAP_OPT_X_TLS_ALLOW;
+      if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
+                                  &opt)) != LDAP_SUCCESS)
+        {
+          log_error ("Warning: Cannot set LDAP TLS require cert option to 'allow': %s",
+                     ldap_err2string (ret));
+        }
+    }
+
+  if (ldap_use_ssl != LDAP_SSL_OFF)
+    {
+      if (ldap_tls_reqcert != -1)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
+                                      &ldap_tls_reqcert)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS require cert option: %s",
+                         ldap_err2string (ret));
+            }
+        }
+
+      if( ldap_tls_ca_file != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_CACERTFILE,
+                                      ldap_tls_ca_file)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS CA certificate file %s: %s",
+                         ldap_tls_ca_file, ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_ca_dir != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_CACERTDIR,
+                                      ldap_tls_ca_dir)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS CA certificate dir %s: %s",
+                         ldap_tls_ca_dir, ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_cert != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_CERTFILE,
+                                      ldap_tls_cert)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS client certificate file %s: %s",
+                         ldap_tls_cert, ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_key != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_KEYFILE,
+                                      ldap_tls_key)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS certificate key file %s: %s",
+                         ldap_tls_key, ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_crlcheck != -1)
+        {
+          int opt = ldap_tls_crlcheck;
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_CRLCHECK,
+                                      &opt)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS crl check option: %s",
+                         ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_ciphers != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_CIPHER_SUITE,
+                                      ldap_tls_ciphers)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS cipher suite %s: %s",
+                         ldap_tls_ciphers, ldap_err2string (ret));
+            }
+        }
+      if( ldap_tls_randfile != NULL)
+        {
+          if ((ret = ldap_set_option (NULL, LDAP_OPT_X_TLS_RANDOM_FILE,
+                                      ldap_tls_randfile)) != LDAP_SUCCESS)
+            {
+              log_error ("Cannot set LDAP TLS random file %s: %s",
+                         ldap_tls_randfile, ldap_err2string (ret));
+            }
+        }
+    }
+#endif
+
+  /* enough for 'ldap://+ + hostname + ':' + port number */
+  uri = malloc(strlen(ldap_server) + 16);
+  if (uri == NULL)
+    {
+      log_error ("Cannot build ldap init URI %s:%d", ldap_server, ldap_port);
+      return;
+    }
+
+  sprintf("ldap://%s:%d", ldap_server, ldap_port);
+  ldap_initialize(&ld, uri);
+
+  if (ld == NULL)
+    {
+      log_error ("Cannot init ldap session to %s:%d", ldap_server, ldap_port);
+      return;
+    }
+
+  free(uri);
+
+  version = LDAP_VERSION3;
+  if ((ret = ldap_set_option (ld, LDAP_OPT_PROTOCOL_VERSION, &version)) != LDAP_OPT_SUCCESS)
+    {
+      log_error ("Cannot set LDAP version to %d: %s", version,
+                 ldap_err2string (ret));
+    }
+
+  if (ldap_referrals != -1)
+    {
+      if ((ret = ldap_set_option (ld, LDAP_OPT_REFERRALS, ldap_referrals ?
+                                  LDAP_OPT_ON : LDAP_OPT_OFF)) != LDAP_OPT_SUCCESS)
+        {
+          log_error ("Cannot %s LDAP referrals option: %s",
+                     (ldap_referrals ? "enable" : "disable"),
+                     ldap_err2string (ret));
+        }
+    }
+
+  if ((ret = ldap_set_rebind_proc(ld, ldap_rebind_cb, NULL)) != LDAP_SUCCESS)
+    {
+      log_error ("Warning: Cannot set ldap rebind procedure: %s",
+                 ldap_err2string (ret));
+    }
+
+#if defined (USE_SSL)
+  if (ldap_use_ssl == LDAP_SSL_LDAPS ||
+     (ldap_use_ssl == LDAP_SSL_ON && ldap_port == LDAPS_PORT))
+    {
+      int opt = LDAP_OPT_X_TLS_HARD;
+      if ((ret = ldap_set_option (ld, LDAP_OPT_X_TLS, &opt)) != LDAP_SUCCESS)
+        {
+          log_error ("Error: Cannot init LDAPS session to %s:%d: %s",
+                    ldap_server, ldap_port, ldap_err2string (ret));
+          ldap_stop();
+          return;
+        }
+      else
+        {
+          log_info ("LDAPS session successfully enabled to %s:%d",
+                    ldap_server, ldap_port);
+        }
+    }
+  else if (ldap_use_ssl != LDAP_SSL_OFF)
+    {
+      if ((ret = ldap_start_tls_s (ld, NULL, NULL)) != LDAP_SUCCESS)
+        {
+          log_error ("Error: Cannot start TLS session to %s:%d: %s",
+                     ldap_server, ldap_port, ldap_err2string (ret));
+          ldap_stop();
+          return;
+        }
+      else
+        {
+          log_info ("TLS session successfully started to %s:%d",
+                    ldap_server, ldap_port);
+        }
+    }
+#endif
+
+  if (ldap_username != NULL && *ldap_username != '\0')
+    {
+      creds.bv_val = strdup(ldap_password);
+      creds.bv_len = strlen(ldap_password);
+
+      if ((ret == ldap_sasl_bind_s (ld, ldap_username, LDAP_SASL_SIMPLE,
+                                    &creds, NULL, NULL, NULL)) != LDAP_SUCCESS)
+        {
+          log_error ("Error: Cannot login into ldap server %s:%d: %s",
+                     ldap_server, ldap_port, ldap_err2string (ret));
+          ldap_stop();
+          return;
+        }
+    }
+
+#if defined (DEBUG_LDAP)
+  log_info ("Successfully logged into LDAP server %s", ldap_server);
+#endif
+}
+
+
+static void
+parse_external_dns (LDAPMessage * ent)
+{
+  char *search[] = {"dhcpOptionsDN", "dhcpSharedNetworkDN", "dhcpSubnetDN",
+                    "dhcpGroupDN", "dhcpHostDN", "dhcpClassesDN",
+                    "dhcpPoolDN", NULL};
+  LDAPMessage * newres, * newent;
+  struct berval **tempbv;
+  int i, j, ret;
+#if defined (DEBUG_LDAP)
+  char *dn;
+
+  dn = ldap_get_dn (ld, ent);
+  if (dn != NULL)
+    {
+      log_info ("Parsing external DNs for '%s'", dn);
+      ldap_memfree (dn);
+    }
+#endif
+
+  if (ld == NULL)
+    ldap_start ();
+  if (ld == NULL)
+    return;
+
+  for (i=0; search[i] != NULL; i++)
+    {
+      if ((tempbv = ldap_get_values_len (ld, ent, search[i])) == NULL)
+        continue;
+
+      for (j=0; tempbv[j] != NULL; j++)
+        {
+          if (*tempbv[j]->bv_val == '\0')
+            continue;
+
+          if ((ret = ldap_search_ext_s(ld, tempbv[j]->bv_val, LDAP_SCOPE_BASE,
+                                       "objectClass=*", NULL, 0, NULL,
+                                       NULL, NULL, 0, &newres)) != LDAP_SUCCESS)
+            {
+              ldap_value_free_len (tempbv);
+              ldap_stop();
+              return;
+            }
+    
+#if defined (DEBUG_LDAP)
+          log_info ("Adding contents of subtree '%s' to config stack from '%s' reference", tempbv[j], search[i]);
+#endif
+          for (newent = ldap_first_entry (ld, newres);
+               newent != NULL;
+               newent = ldap_next_entry (ld, newent))
+            {
+#if defined (DEBUG_LDAP)
+              dn = ldap_get_dn (ld, newent);
+              if (dn != NULL)
+                {
+                  log_info ("Adding LDAP result set starting with '%s' to config stack", dn);
+                  ldap_memfree (dn);
+                }
+#endif
+
+              add_to_config_stack (newres, newent);
+              /* don't free newres here */
+            }
+        }
+
+      ldap_value_free_len (tempbv);
+    }
+}
+
+
+static void
+free_stack_entry (struct ldap_config_stack *item)
+{
+  struct ldap_config_stack *look_ahead_pointer = item;
+  int may_free_msg = 1;
+
+  while (look_ahead_pointer->next != NULL)
+    {
+      look_ahead_pointer = look_ahead_pointer->next;
+      if (look_ahead_pointer->res == item->res)
+        {
+          may_free_msg = 0;
+          break;
+        }
+    }
+
+  if (may_free_msg) 
+    ldap_msgfree (item->res);
+
+  dfree (item, MDL);
+}
+
+
+static void
+next_ldap_entry (struct parse *cfile)
+{
+  struct ldap_config_stack *temp_stack;
+
+  if (ldap_stack != NULL && ldap_stack->close_brace)
+    {
+      x_strncat (cfile->inbuf, "}\n", LDAP_BUFFER_SIZE);
+      ldap_stack->close_brace = 0;
+    }
+
+  while (ldap_stack != NULL && 
+         (ldap_stack->ldent == NULL ||
+          (ldap_stack->ldent = ldap_next_entry (ld, ldap_stack->ldent)) == NULL))
+    {
+      if (ldap_stack->close_brace)
+        {
+          x_strncat (cfile->inbuf, "}\n", LDAP_BUFFER_SIZE);
+          ldap_stack->close_brace = 0;
+        }
+
+      temp_stack = ldap_stack;
+      ldap_stack = ldap_stack->next;
+      free_stack_entry (temp_stack);
+    }
+
+  if (ldap_stack != NULL && ldap_stack->close_brace)
+    {
+      x_strncat (cfile->inbuf, "}\n", LDAP_BUFFER_SIZE);
+      ldap_stack->close_brace = 0;
+    }
+}
+
+
+static char
+check_statement_end (const char *statement)
+{
+  char *ptr;
+
+  if (statement == NULL || *statement == '\0')
+    return ('\0');
+
+  /*
+  ** check if it ends with "}", e.g.:
+  **   "zone my.domain. { ... }"
+  ** optionally followed by spaces
+  */
+  ptr = strrchr (statement, '}');
+  if (ptr != NULL)
+    {
+      /* skip following white-spaces */
+      for (++ptr; isspace ((int)*ptr); ptr++);
+
+      /* check if we reached the end */
+      if (*ptr == '\0')
+        return ('}'); /* yes, block end */
+      else
+        return (*ptr);
+    }
+
+  /*
+  ** this should not happen, but...
+  ** check if it ends with ";", e.g.:
+  **   "authoritative;"
+  ** optionally followed by spaces
+  */
+  ptr = strrchr (statement, ';');
+  if (ptr != NULL)
+    {
+      /* skip following white-spaces */
+      for (++ptr; isspace ((int)*ptr); ptr++);
+
+      /* check if we reached the end */
+      if (*ptr == '\0')
+        return (';'); /* ends with a ; */
+      else
+        return (*ptr);
+    }
+
+  return ('\0');
+}
+
+
+static isc_result_t
+ldap_parse_entry_options (LDAPMessage *ent, char *buffer, size_t size,
+                          int *lease_limit)
+{
+  struct berval **tempbv;
+  int i;
+
+  if (ent == NULL || buffer == NULL || size == 0)
+    return (ISC_R_FAILURE);
+
+  if ((tempbv = ldap_get_values_len (ld, ent, "dhcpStatements")) != NULL)
+    {
+      for (i=0; tempbv[i] != NULL; i++)
+        {
+          if (lease_limit != NULL &&
+              strncasecmp ("lease limit ", tempbv[i]->bv_val, 12) == 0)
+            {
+              *lease_limit = (int) strtol ((tempbv[i]->bv_val) + 12, NULL, 10);
+              continue;
+            }
+
+          x_strncat (buffer, tempbv[i]->bv_val, size);
+
+          switch((int) check_statement_end (tempbv[i]->bv_val))
+            {
+              case '}':
+              case ';':
+                x_strncat (buffer, "\n", size);
+                break;
+              default:
+                x_strncat (buffer, ";\n", size);
+                break;
+            }
+        }
+      ldap_value_free_len (tempbv);
+    }
+
+  if ((tempbv = ldap_get_values_len (ld, ent, "dhcpOption")) != NULL)
+    {
+      for (i=0; tempbv[i] != NULL; i++)
+        {
+          x_strncat (buffer, "option ", size);
+          x_strncat (buffer, tempbv[i]->bv_val, size);
+          switch ((int) check_statement_end (tempbv[i]->bv_val))
+            {
+              case ';':
+                x_strncat (buffer, "\n", size);
+                break;
+              default:
+                x_strncat (buffer, ";\n", size);
+                break;
+            }
+        }
+      ldap_value_free_len (tempbv);
+    }
+
+  return (ISC_R_SUCCESS);
+}
+
+
+static void
+ldap_generate_config_string (struct parse *cfile)
+{
+  struct berval **objectClass;
+  char *dn;
+  struct ldap_config_stack *entry;
+  LDAPMessage * ent, * res;
+  int i, ignore, found;
+  int ret;
+
+  if (ld == NULL)
+    ldap_start ();
+  if (ld == NULL)
+    return;
+
+  entry = ldap_stack;
+  if ((objectClass = ldap_get_values_len (ld, entry->ldent, 
+                                      "objectClass")) == NULL)
+    return;
+    
+  ignore = 0;
+  found = 1;
+  for (i=0; objectClass[i] != NULL; i++)
+    {
+      if (strcasecmp (objectClass[i]->bv_val, "dhcpSharedNetwork") == 0)
+        ldap_parse_shared_network (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpClass") == 0)
+        ldap_parse_class (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpSubnet") == 0)
+        ldap_parse_subnet (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpPool") == 0)
+        ldap_parse_pool (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpGroup") == 0)
+        ldap_parse_group (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpTSigKey") == 0)
+        ldap_parse_key (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpDnsZone") == 0)
+        ldap_parse_zone (entry, cfile);
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpHost") == 0)
+        {
+          if (ldap_method == LDAP_METHOD_STATIC)
+            ldap_parse_host (entry, cfile);
+          else
+            {
+              ignore = 1;
+              break;
+            }
+        }
+      else if (strcasecmp (objectClass[i]->bv_val, "dhcpSubClass") == 0)
+        {
+          if (ldap_method == LDAP_METHOD_STATIC)
+            ldap_parse_subclass (entry, cfile);
+          else
+            {
+              ignore = 1;
+              break;
+            }
+        }
+      else
+        found = 0;
+
+      if (found && cfile->inbuf[0] == '\0')
+        {
+          ignore = 1;
+          break;
+        }
+    }
+
+  ldap_value_free_len (objectClass);
+
+  if (ignore)
+    {
+      next_ldap_entry (cfile);
+      return;
+    }
+
+  ldap_parse_entry_options(entry->ldent, cfile->inbuf,
+                           LDAP_BUFFER_SIZE-1, NULL);
+
+  dn = ldap_get_dn (ld, entry->ldent);
+
+#if defined(DEBUG_LDAP)
+  if (dn != NULL)
+    log_info ("Found LDAP entry '%s'", dn);
+#endif
+
+  if (dn == NULL ||
+      (ret = ldap_search_ext_s (ld, dn, LDAP_SCOPE_ONELEVEL,
+                                "objectClass=*", NULL, 0, NULL, NULL,
+                                NULL, 0, &res)) != LDAP_SUCCESS)
+    {
+      if (dn)
+        ldap_memfree (dn);
+
+      ldap_stop();
+      return;
+    }
+
+  ldap_memfree (dn);
+
+  if ((ent = ldap_first_entry (ld, res)) != NULL)
+    {
+      add_to_config_stack (res, ent);
+      parse_external_dns (entry->ldent);
+    }
+  else
+    {
+      ldap_msgfree (res);
+      parse_external_dns (entry->ldent);
+      next_ldap_entry (cfile);
+    }
+}
+
+
+static void
+ldap_close_debug_fd()
+{
+  if (ldap_debug_fd != -1)
+    {
+      close (ldap_debug_fd);
+      ldap_debug_fd = -1;
+    }
+}
+
+
+static void
+ldap_write_debug (const void *buff, size_t size)
+{
+  if (ldap_debug_fd != -1)
+    {
+      if (write (ldap_debug_fd, buff, size) < 0)
+        {
+          log_error ("Error writing to LDAP debug file %s: %s."
+                     " Disabling log file.", ldap_debug_file,
+                     strerror (errno));
+          ldap_close_debug_fd();
+        }
+    }
+}
+
+static int
+ldap_read_function (struct parse *cfile)
+{
+  cfile->inbuf[0] = '\0';
+  cfile->buflen = 0;
+ 
+  while (ldap_stack != NULL && *cfile->inbuf == '\0')
+    ldap_generate_config_string (cfile);
+
+  if (ldap_stack == NULL && *cfile->inbuf == '\0')
+    return (EOF);
+
+  cfile->bufix = 1;
+  cfile->buflen = strlen (cfile->inbuf);
+  if (cfile->buflen > 0)
+    ldap_write_debug (cfile->inbuf, cfile->buflen);
+
+#if defined (DEBUG_LDAP)
+  log_info ("Sending config line '%s'", cfile->inbuf);
+#endif
+
+  return (cfile->inbuf[0]);
+}
+
+
+static char *
+ldap_get_host_name (LDAPMessage * ent)
+{
+  struct berval **name;
+  char *ret;
+
+  ret = NULL;
+  if ((name = ldap_get_values_len (ld, ent, "cn")) == NULL || name[0] == NULL)
+    {
+      if (name != NULL)
+        ldap_value_free_len (name);
+
+#if defined (DEBUG_LDAP)
+      ret = ldap_get_dn (ld, ent);
+      if (ret != NULL)
+        {
+          log_info ("Cannot get cn attribute for LDAP entry %s", ret);
+          ldap_memfree(ret);
+        }
+#endif
+      return (NULL);
+    }
+
+  ret = dmalloc (strlen (name[0]->bv_val) + 1, MDL);
+  strcpy (ret, name[0]->bv_val);
+  ldap_value_free_len (name);
+
+  return (ret);
+}
+
+
+static int
+getfqhostname(char *fqhost, size_t size)
+{
+#if defined(MAXHOSTNAMELEN)
+  char   hname[MAXHOSTNAMELEN];
+#else
+  char   hname[65];
+#endif
+  struct hostent *hp;
+
+  if(NULL == fqhost || 1 >= size)
+    return -1;
+
+  memset(hname, 0, sizeof(hname));
+  if( gethostname(hname, sizeof(hname)-1))
+    return -1;
+
+  if(NULL == (hp = gethostbyname(hname)))
+    return -1;
+
+  strncpy(fqhost, hp->h_name, size-1);
+  fqhost[size-1] = '\0';
+  return 0;
+}
+
+
+isc_result_t
+ldap_read_config (void)
+{
+  LDAPMessage * ldres, * hostres, * ent, * hostent;
+  char hfilter[1024], sfilter[1024], fqdn[257];
+  char *buffer, *hostdn;
+  ldap_dn_node *curr = NULL;
+  struct parse *cfile;
+  struct utsname unme;
+  isc_result_t res;
+  size_t length;
+  int ret, cnt;
+  struct berval **tempbv = NULL;
+
+  if (ld == NULL)
+    ldap_start ();
+  if (ld == NULL)
+    return (ldap_server == NULL ? ISC_R_SUCCESS : ISC_R_FAILURE);
+ 
+  buffer = dmalloc (LDAP_BUFFER_SIZE+1, MDL);
+  if (buffer == NULL)
+    return (ISC_R_FAILURE);
+
+  cfile = (struct parse *) NULL;
+  res = new_parse (&cfile, -1, buffer, LDAP_BUFFER_SIZE, "LDAP", 0);
+  if (res != ISC_R_SUCCESS)
+    return (res);
+ 
+  uname (&unme);
+  if (ldap_dhcp_server_cn != NULL)
+    {
+     snprintf (hfilter, sizeof (hfilter),
+                "(&(objectClass=dhcpServer)(cn=%s))", ldap_dhcp_server_cn);
+    }
+  else
+  {
+  if(0 == getfqhostname(fqdn, sizeof(fqdn)))
+    {
+      snprintf (hfilter, sizeof (hfilter),
+                "(&(objectClass=dhcpServer)(|(cn=%s)(cn=%s)))", 
+                unme.nodename, fqdn);
+    }
+  else
+    {
+      snprintf (hfilter, sizeof (hfilter),
+                "(&(objectClass=dhcpServer)(cn=%s))", unme.nodename);
+    }
+
+  }
+  hostres = NULL;
+  if ((ret = ldap_search_ext_s (ld, ldap_base_dn, LDAP_SCOPE_SUBTREE,
+                                hfilter, NULL, 0, NULL, NULL, NULL, 0,
+                                &hostres)) != LDAP_SUCCESS)
+    {
+      log_error ("Cannot find host LDAP entry %s %s",
+		 ((ldap_dhcp_server_cn == NULL)?(unme.nodename):(ldap_dhcp_server_cn)), hfilter);
+      if(NULL != hostres)
+        ldap_msgfree (hostres);
+      ldap_stop();
+      return (ISC_R_FAILURE);
+    }
+
+  if ((hostent = ldap_first_entry (ld, hostres)) == NULL)
+    {
+      log_error ("Error: Cannot find LDAP entry matching %s", hfilter);
+      ldap_msgfree (hostres);
+      ldap_stop();
+      return (ISC_R_FAILURE);
+    }
+
+  hostdn = ldap_get_dn (ld, hostent);
+#if defined(DEBUG_LDAP)
+  if (hostdn != NULL)
+    log_info ("Found dhcpServer LDAP entry '%s'", hostdn);
+#endif
+
+  if (hostdn == NULL ||
+      (tempbv = ldap_get_values_len (ld, hostent, "dhcpServiceDN")) == NULL ||
+      tempbv[0] == NULL)
+    {
+      log_error ("Error: Cannot find LDAP entry matching %s", hfilter);
+
+      if (tempbv != NULL)
+        ldap_value_free_len (tempbv);
+
+      if (hostdn)
+        ldap_memfree (hostdn);
+      ldap_msgfree (hostres);
+      ldap_stop();
+      return (ISC_R_FAILURE);
+    }
+
+#if defined(DEBUG_LDAP)
+  log_info ("LDAP: Parsing dhcpServer options '%s' ...", hostdn);
+#endif
+
+  cfile->inbuf[0] = '\0';
+  ldap_parse_entry_options(hostent, cfile->inbuf, LDAP_BUFFER_SIZE, NULL);
+  cfile->buflen = strlen (cfile->inbuf);
+  if(cfile->buflen > 0)
+    {
+      ldap_write_debug (cfile->inbuf, cfile->buflen);
+
+      res = conf_file_subparse (cfile, root_group, ROOT_GROUP);
+      if (res != ISC_R_SUCCESS)
+        {
+          log_error ("LDAP: cannot parse dhcpServer entry '%s'", hostdn);
+          ldap_memfree (hostdn);
+          ldap_stop();
+          return res;
+        }
+      cfile->inbuf[0] = '\0';
+    }
+  ldap_msgfree (hostres);
+
+  /*
+  ** attach ldap (tree) read function now
+  */
+  cfile->bufix = cfile->buflen = 0;
+  cfile->read_function = ldap_read_function;
+
+  res = ISC_R_SUCCESS;
+  for (cnt=0; tempbv[cnt] != NULL; cnt++)
+    {
+      snprintf(sfilter, sizeof(sfilter), "(&(objectClass=dhcpService)"
+                        "(|(dhcpPrimaryDN=%s)(dhcpSecondaryDN=%s)))",
+                        hostdn, hostdn);
+      ldres = NULL;
+      if ((ret = ldap_search_ext_s (ld, tempbv[cnt]->bv_val, LDAP_SCOPE_BASE,
+                                    sfilter, NULL, 0, NULL, NULL, NULL,
+                                    0, &ldres)) != LDAP_SUCCESS)
+        {
+          log_error ("Error searching for dhcpServiceDN '%s': %s. Please update the LDAP entry '%s'",
+                     tempbv[cnt]->bv_val, ldap_err2string (ret), hostdn);
+          if(NULL != ldres)
+            ldap_msgfree(ldres);
+          res = ISC_R_FAILURE;
+          break;
+        }
+
+      if ((ent = ldap_first_entry (ld, ldres)) == NULL)
+        {
+          log_error ("Error: Cannot find dhcpService DN '%s' with primary or secondary server reference. Please update the LDAP server entry '%s'",
+                     tempbv[cnt]->bv_val, hostdn);
+
+          ldap_msgfree(ldres);
+          res = ISC_R_FAILURE;
+          break;
+        }
+
+      /*
+      ** FIXME: how to free the remembered dn's on exit?
+      **        This should be OK if dmalloc registers the
+      **        memory it allocated and frees it on exit..
+      */
+
+      curr = dmalloc (sizeof (*curr), MDL);
+      if (curr != NULL)
+        {
+          length = strlen (tempbv[cnt]->bv_val);
+          curr->dn = dmalloc (length + 1, MDL);
+          if (curr->dn == NULL)
+            {
+              dfree (curr, MDL);
+              curr = NULL;
+            }
+          else
+            strcpy (curr->dn, tempbv[cnt]->bv_val);
+        }
+
+      if (curr != NULL)
+        {
+          curr->refs++;
+
+          /* append to service-dn list */
+          if (ldap_service_dn_tail != NULL)
+            ldap_service_dn_tail->next = curr;
+          else
+            ldap_service_dn_head = curr;
+
+          ldap_service_dn_tail = curr;
+        }
+      else
+        log_fatal ("no memory to remember ldap service dn");
+
+#if defined (DEBUG_LDAP)
+      log_info ("LDAP: Parsing dhcpService DN '%s' ...", tempbv[cnt]);
+#endif
+      add_to_config_stack (ldres, ent);
+      res = conf_file_subparse (cfile, root_group, ROOT_GROUP);
+      if (res != ISC_R_SUCCESS)
+        {
+          log_error ("LDAP: cannot parse dhcpService entry '%s'", tempbv[cnt]->bv_val);
+          break;
+        }
+    }
+
+  end_parse (&cfile);
+  ldap_close_debug_fd();
+
+  ldap_memfree (hostdn);
+  ldap_value_free_len (tempbv);
+
+  if (res != ISC_R_SUCCESS)
+    {
+      struct ldap_config_stack *temp_stack;
+
+      while ((curr = ldap_service_dn_head) != NULL)
+        {
+          ldap_service_dn_head = curr->next;
+          dfree (curr->dn, MDL);
+          dfree (curr, MDL);
+        }
+
+      ldap_service_dn_tail = NULL;
+
+      while ((temp_stack = ldap_stack) != NULL)
+        {
+          ldap_stack = temp_stack->next;
+          free_stack_entry (temp_stack);
+        }
+
+      ldap_stop();
+    }
+
+  /* Unbind from ldap immediately after reading config in static mode. */
+  if (ldap_method == LDAP_METHOD_STATIC)
+    ldap_stop();
+
+  return (res);
+}
+
+
+/* This function will parse the dhcpOption and dhcpStatements field in the LDAP
+   entry if it exists. Right now, type will be either HOST_DECL or CLASS_DECL.
+   If we are parsing a HOST_DECL, this always returns 0. If we are parsing a 
+   CLASS_DECL, this will return what the current lease limit is in LDAP. If
+   there is no lease limit specified, we return 0 */
+
+static int
+ldap_parse_options (LDAPMessage * ent, struct group *group,
+                         int type, struct host_decl *host,
+                         struct class **class)
+{
+  int declaration, lease_limit;
+  char option_buffer[8192];
+  enum dhcp_token token;
+  struct parse *cfile;
+  isc_result_t res;
+  const char *val;
+
+  lease_limit = 0;
+  *option_buffer = '\0';
+ 
+ /* This block of code will try to find the parent of the host, and
+    if it is a group object, fetch the options and apply to the host. */
+  if (type == HOST_DECL) 
+    {
+      char *hostdn, *basedn, *temp1, *temp2, filter[1024];
+      LDAPMessage *groupdn, *entry;
+      int ret;
+
+      hostdn = ldap_get_dn (ld, ent);
+      if( hostdn != NULL)
+        {
+          basedn = NULL;
+
+          temp1 = strchr (hostdn, '=');
+          if (temp1 != NULL)
+            temp1 = strchr (++temp1, '=');
+          if (temp1 != NULL)
+            temp2 = strchr (++temp1, ',');
+          else
+            temp2 = NULL;
+
+          if (temp2 != NULL)
+            {
+              snprintf (filter, sizeof(filter),
+                        "(&(cn=%.*s)(objectClass=dhcpGroup))",
+                        (int)(temp2 - temp1), temp1);
+
+              basedn = strchr (temp1, ',');
+              if (basedn != NULL)
+                ++basedn;
+            }
+
+          if (basedn != NULL && *basedn != '\0')
+            {
+              ret = ldap_search_ext_s (ld, basedn, LDAP_SCOPE_SUBTREE, filter,
+                                       NULL, 0, NULL, NULL, NULL, 0, &groupdn);
+              if (ret == LDAP_SUCCESS)
+                {
+                  if ((entry = ldap_first_entry (ld, groupdn)) != NULL)
+                    {
+                      res = ldap_parse_entry_options (entry, option_buffer,
+                                                      sizeof(option_buffer) - 1,
+                                                      &lease_limit);
+                      if (res != ISC_R_SUCCESS)
+                        {
+                          /* reset option buffer discarding any results */
+                          *option_buffer = '\0';
+                          lease_limit = 0;
+                        }
+                    }
+                  ldap_msgfree( groupdn);
+                }
+            }
+          ldap_memfree( hostdn);
+        }
+    }
+
+  res = ldap_parse_entry_options (ent, option_buffer, sizeof(option_buffer) - 1,
+                                  &lease_limit);
+  if (res != ISC_R_SUCCESS)
+    return (lease_limit);
+
+  option_buffer[sizeof(option_buffer) - 1] = '\0';
+  if (*option_buffer == '\0')
+    return (lease_limit);
+
+  cfile = (struct parse *) NULL;
+  res = new_parse (&cfile, -1, option_buffer, strlen (option_buffer), 
+                   type == HOST_DECL ? "LDAP-HOST" : "LDAP-SUBCLASS", 0);
+  if (res != ISC_R_SUCCESS)
+    return (lease_limit);
+
+#if defined (DEBUG_LDAP)
+  log_info ("Sending the following options: '%s'", option_buffer);
+#endif
+
+  declaration = 0;
+  do
+    {
+      token = peek_token (&val, NULL, cfile);
+      if (token == END_OF_FILE)
+        break;
+       declaration = parse_statement (cfile, group, type, host, declaration);
+    } while (1);
+
+  end_parse (&cfile);
+
+  return (lease_limit);
+}
+
+
+
+int
+find_haddr_in_ldap (struct host_decl **hp, int htype, unsigned hlen,
+                    const unsigned char *haddr, const char *file, int line)
+{
+  char buf[128], *type_str;
+  LDAPMessage * res, *ent;
+  struct host_decl * host;
+  isc_result_t status;
+  ldap_dn_node *curr;
+  int ret;
+
+  if (ldap_method == LDAP_METHOD_STATIC)
+    return (0);
+
+  if (ld == NULL)
+    ldap_start ();
+  if (ld == NULL)
+    return (0);
+
+  switch (htype)
+    {
+      case HTYPE_ETHER:
+        type_str = "ethernet";
+        break;
+      case HTYPE_IEEE802:
+        type_str = "token-ring";
+        break;
+      case HTYPE_FDDI:
+        type_str = "fddi";
+        break;
+      default:
+        log_info ("Ignoring unknown type %d", htype);
+        return (0);
+    }
+
+  /*
+  ** FIXME: It is not guaranteed, that the dhcpHWAddress attribute
+  **        contains _exactly_ "type addr" with one space between!
+  */
+  snprintf (buf, sizeof (buf),
+            "(&(objectClass=dhcpHost)(dhcpHWAddress=%s %s))",
+           type_str, print_hw_addr (htype, hlen, haddr));
+
+  res = ent = NULL;
+  for (curr = ldap_service_dn_head;
+       curr != NULL && *curr->dn != '\0';
+       curr = curr->next)
+    {
+#if defined (DEBUG_LDAP)
+      log_info ("Searching for %s in LDAP tree %s", buf, curr->dn);
+#endif
+      ret = ldap_search_ext_s (ld, curr->dn, LDAP_SCOPE_SUBTREE, buf, NULL, 0,
+                               NULL, NULL, NULL, 0, &res);
+
+      if(ret == LDAP_SERVER_DOWN)
+        {
+          log_info ("LDAP server was down, trying to reconnect...");
+
+          ldap_stop();
+          ldap_start();
+          if(ld == NULL)
+            {
+              log_info ("LDAP reconnect failed - try again later...");
+              return (0);
+            }
+
+          ret = ldap_search_ext_s (ld, curr->dn, LDAP_SCOPE_SUBTREE, buf, NULL,
+                                   0, NULL, NULL, NULL, 0, &res);
+        }
+
+      if (ret == LDAP_SUCCESS)
+        {
+          if( (ent = ldap_first_entry (ld, res)) != NULL)
+            break; /* search OK and have entry */
+
+#if defined (DEBUG_LDAP)
+          log_info ("No host entry for %s in LDAP tree %s",
+                    buf, curr->dn);
+#endif
+          if(res)
+            {
+              ldap_msgfree (res);
+              res = NULL;
+            }
+        }
+      else
+        {
+          if(res)
+            {
+              ldap_msgfree (res);
+              res = NULL;
+            }
+
+          if (ret != LDAP_NO_SUCH_OBJECT && ret != LDAP_SUCCESS)
+            {
+              log_error ("Cannot search for %s in LDAP tree %s: %s", buf, 
+                         curr->dn, ldap_err2string (ret));
+              ldap_stop();
+              return (0);
+            }
+#if defined (DEBUG_LDAP)
+          else
+            {
+              log_info ("ldap_search_ext_s returned %s when searching for %s in %s",
+                        ldap_err2string (ret), buf, curr->dn);
+            }
+#endif
+        }
+    }
+
+  if (res && ent)
+    {
+#if defined (DEBUG_LDAP)
+      char *dn = ldap_get_dn (ld, ent);
+      if (dn != NULL)
+        {
+          log_info ("Found dhcpHWAddress LDAP entry %s", dn);
+          ldap_memfree(dn);
+        }
+#endif
+
+      host = (struct host_decl *)0;
+      status = host_allocate (&host, MDL);
+      if (status != ISC_R_SUCCESS)
+        {
+          log_fatal ("can't allocate host decl struct: %s", 
+                     isc_result_totext (status)); 
+          ldap_msgfree (res);
+          return (0);
+        }
+
+      host->name = ldap_get_host_name (ent);
+      if (host->name == NULL)
+        {
+          host_dereference (&host, MDL);
+          ldap_msgfree (res);
+          return (0);
+        }
+
+      if (!clone_group (&host->group, root_group, MDL))
+        {
+          log_fatal ("can't clone group for host %s", host->name);
+          host_dereference (&host, MDL);
+          ldap_msgfree (res);
+          return (0);
+        }
+
+      ldap_parse_options (ent, host->group, HOST_DECL, host, NULL);
+
+      *hp = host;
+      ldap_msgfree (res);
+      return (1);
+    }
+
+
+  if(res) ldap_msgfree (res);
+  return (0);
+}
+
+
+int
+find_subclass_in_ldap (struct class *class, struct class **newclass, 
+                       struct data_string *data)
+{
+  LDAPMessage * res, * ent;
+  int ret, lease_limit;
+  isc_result_t status;
+  ldap_dn_node *curr;
+  char buf[1024];
+
+  if (ldap_method == LDAP_METHOD_STATIC)
+    return (0);
+
+  if (ld == NULL)
+    ldap_start ();
+  if (ld == NULL)
+    return (0);
+
+  snprintf (buf, sizeof (buf),
+            "(&(objectClass=dhcpSubClass)(cn=%s)(dhcpClassData=%s))",
+            print_hex_1 (data->len, data->data, 60),
+            print_hex_2 (strlen (class->name), (u_int8_t *) class->name, 60));
+#if defined (DEBUG_LDAP)
+  log_info ("Searching LDAP for %s", buf);
+#endif
+
+  res = ent = NULL;
+  for (curr = ldap_service_dn_head;
+       curr != NULL && *curr->dn != '\0';
+       curr = curr->next)
+    {
+#if defined (DEBUG_LDAP)
+      log_info ("Searching for %s in LDAP tree %s", buf, curr->dn);
+#endif
+      ret = ldap_search_ext_s (ld, curr->dn, LDAP_SCOPE_SUBTREE, buf, NULL, 0,
+                               NULL, NULL, NULL, 0, &res);
+
+      if(ret == LDAP_SERVER_DOWN)
+        {
+          log_info ("LDAP server was down, trying to reconnect...");
+
+          ldap_stop();
+          ldap_start();
+
+          if(ld == NULL)
+            {
+              log_info ("LDAP reconnect failed - try again later...");
+              return (0);
+            }
+
+          ret = ldap_search_ext_s (ld, curr->dn, LDAP_SCOPE_SUBTREE, buf,
+                                   NULL, 0, NULL, NULL, NULL, 0, &res);
+        }
+
+      if (ret == LDAP_SUCCESS)
+        {
+          if( (ent = ldap_first_entry (ld, res)) != NULL)
+            break; /* search OK and have entry */
+
+#if defined (DEBUG_LDAP)
+          log_info ("No subclass entry for %s in LDAP tree %s",
+                    buf, curr->dn);
+#endif
+          if(res)
+            {
+              ldap_msgfree (res);
+              res = NULL;
+            }
+        }
+      else
+        {
+          if(res)
+            {
+              ldap_msgfree (res);
+              res = NULL;
+            }
+
+          if (ret != LDAP_NO_SUCH_OBJECT && ret != LDAP_SUCCESS)
+            {
+              log_error ("Cannot search for %s in LDAP tree %s: %s", buf, 
+                         curr->dn, ldap_err2string (ret));
+              ldap_stop();
+              return (0);
+            }
+#if defined (DEBUG_LDAP)
+          else
+            {
+              log_info ("ldap_search_ext_s returned %s when searching for %s in %s",
+                        ldap_err2string (ret), buf, curr->dn);
+            }
+#endif
+        }
+    }
+
+  if (res && ent)
+    {
+#if defined (DEBUG_LDAP)
+      char *dn = ldap_get_dn (ld, ent);
+      if (dn != NULL)
+        {
+          log_info ("Found subclass LDAP entry %s", dn);
+          ldap_memfree(dn);
+        }
+#endif
+
+      status = class_allocate (newclass, MDL);
+      if (status != ISC_R_SUCCESS)
+        {
+          log_error ("Cannot allocate memory for a new class");
+          ldap_msgfree (res);
+          return (0);
+        }
+
+      group_reference (&(*newclass)->group, class->group, MDL);
+      class_reference (&(*newclass)->superclass, class, MDL);
+      lease_limit = ldap_parse_options (ent, (*newclass)->group, 
+                                        CLASS_DECL, NULL, newclass);
+      if (lease_limit == 0)
+        (*newclass)->lease_limit = class->lease_limit; 
+      else
+        class->lease_limit = lease_limit;
+
+      if ((*newclass)->lease_limit) 
+        {
+          (*newclass)->billed_leases = 
+              dmalloc ((*newclass)->lease_limit * sizeof (struct lease *), MDL);
+          if (!(*newclass)->billed_leases) 
+            {
+              log_error ("no memory for billing");
+              class_dereference (newclass, MDL);
+              ldap_msgfree (res);
+              return (0);
+            }
+          memset ((*newclass)->billed_leases, 0, 
+                ((*newclass)->lease_limit * sizeof (*newclass)->billed_leases));
+        }
+
+      data_string_copy (&(*newclass)->hash_string, data, MDL);
+
+      ldap_msgfree (res);
+      return (1);
+    }
+
+  if(res) ldap_msgfree (res);
+  return (0);
+}
+
+#endif
diff -up dhcp-4.0.0/server/confpars.c.ldap dhcp-4.0.0/server/confpars.c
--- dhcp-4.0.0/server/confpars.c.ldap	2007-11-30 11:51:43.000000000 -1000
+++ dhcp-4.0.0/server/confpars.c	2008-01-14 10:42:59.000000000 -1000
@@ -60,7 +60,17 @@ void parse_trace_setup ()
 
 isc_result_t readconf ()
 {
-	return read_conf_file (path_dhcpd_conf, root_group, ROOT_GROUP, 0);
+	isc_result_t res;
+
+	res = read_conf_file (path_dhcpd_conf, root_group, ROOT_GROUP, 0);
+#if defined(LDAP_CONFIGURATION)
+	if (res != ISC_R_SUCCESS)
+		return (res);
+
+	return ldap_read_config ();
+#else
+	return (res);
+#endif
 }
 
 isc_result_t read_conf_file (const char *filename, struct group *group,
diff -up dhcp-4.0.0/server/class.c.ldap dhcp-4.0.0/server/class.c
--- dhcp-4.0.0/server/class.c.ldap	2007-09-05 07:32:10.000000000 -1000
+++ dhcp-4.0.0/server/class.c	2008-01-14 10:42:59.000000000 -1000
@@ -84,6 +84,7 @@ int check_collection (packet, lease, col
 	int matched = 0;
 	int status;
 	int ignorep;
+	int classfound;
 
 	for (class = collection -> classes; class; class = class -> nic) {
 #if defined (DEBUG_CLASS_MATCHING)
@@ -129,9 +130,15 @@ int check_collection (packet, lease, col
 				   class -> submatch, MDL));
 			if (status && data.len) {
 				nc = (struct class *)0;
-				if (class_hash_lookup (&nc, class -> hash,
-						       (const char *)data.data,
-						       data.len, MDL)) {
+				classfound = class_hash_lookup (&nc, class -> hash,
+					(const char *)data.data, data.len, MDL);
+
+#ifdef LDAP_CONFIGURATION
+				if (!classfound && find_subclass_in_ldap (class, &nc, &data))
+					classfound = 1;
+#endif
+
+				if (classfound) {
 #if defined (DEBUG_CLASS_MATCHING)
 					log_info ("matches subclass %s.",
 					      print_hex_1 (data.len,
diff -up dhcp-4.0.0/server/stables.c.ldap dhcp-4.0.0/server/stables.c
--- dhcp-4.0.0/server/stables.c.ldap	2007-11-20 08:34:37.000000000 -1000
+++ dhcp-4.0.0/server/stables.c	2008-01-14 10:45:48.000000000 -1000
@@ -238,9 +238,107 @@ static struct option server_options[] = 
 	{ "dhcpv6-lease-file-name", "t",	&server_universe,  54, 1 },
 	{ "dhcpv6-pid-file-name", "t",		&server_universe,  55, 1 },
 	{ "limit-addrs-per-ia", "L",		&server_universe,  56, 1 },
+#if defined(LDAP_CONFIGURATION)
+	{ "ldap-server", "t",				&server_universe,  57, 1 },
+	{ "ldap-port", "d",					&server_universe,  58, 1 },
+	{ "ldap-username", "t",				&server_universe,  59, 1 },
+	{ "ldap-password", "t",				&server_universe,  60, 1 },
+	{ "ldap-base-dn", "t",				&server_universe,  61, 1 },
+	{ "ldap-method", "Nldap-methods.",	&server_universe,  62, 1 },
+	{ "ldap-debug-file", "t",			&server_universe,  63, 1 },
+	{ "ldap-dhcp-server-cn", "t",		&server_universe,  64, 1 },
+	{ "ldap-referrals", "f",			&server_universe,  65, 1 },
+#if defined(USE_SSL)
+	{ "ldap-ssl", "Nldap-ssl-usage.",	&server_universe,  66, 1 },
+	{ "ldap-tls-reqcert", "Nldap-tls-reqcert.",	&server_universe,  67, 1 },
+	{ "ldap-tls-ca-file", "t",			&server_universe,  68, 1 },
+	{ "ldap-tls-ca-dir", "t",			&server_universe,  69, 1 },
+	{ "ldap-tls-cert", "t",				&server_universe,  70, 1 },
+	{ "ldap-tls-key", "t",				&server_universe,  71, 1 },
+	{ "ldap-tls-crlcheck", "Nldap-tls-crlcheck.",	&server_universe,  72, 1 },
+	{ "ldap-tls-ciphers", "t",			&server_universe,  73, 1 },
+	{ "ldap-tls-randfile", "t",			&server_universe,  74, 1 },
+#else
+	{ "unknown-66", "X",				&server_universe,  66, 1 },
+	{ "unknown-67", "X",				&server_universe,  67, 1 },
+	{ "unknown-68", "X",				&server_universe,  68, 1 },
+	{ "unknown-69", "X",				&server_universe,  69, 1 },
+	{ "unknown-70", "X",				&server_universe,  70, 1 },
+	{ "unknown-71", "X",				&server_universe,  71, 1 },
+	{ "unknown-72", "X",				&server_universe,  72, 1 },
+	{ "unknown-73", "X",				&server_universe,  73, 1 },
+	{ "unknown-74", "X",				&server_universe,  74, 1 },
+#endif
+#else
+	{ "unknown-57", "X",				&server_universe,  57, 1 },
+	{ "unknown-58", "X",				&server_universe,  58, 1 },
+	{ "unknown-59", "X",				&server_universe,  59, 1 },
+	{ "unknown-60", "X",				&server_universe,  60, 1 },
+	{ "unknown-61", "X",				&server_universe,  61, 1 },
+	{ "unknown-62", "X",				&server_universe,  62, 1 },
+	{ "unknown-63", "X",				&server_universe,  63, 1 },
+	{ "unknown-64", "X",				&server_universe,  64, 1 },
+	{ "unknown-65", "X",				&server_universe,  65, 1 },
+#endif
 	{ NULL, NULL, NULL, 0, 0 }
 };
 
+#if defined(LDAP_CONFIGURATION)
+struct enumeration_value ldap_values [] = {
+	{ "static", LDAP_METHOD_STATIC },
+	{ "dynamic", LDAP_METHOD_DYNAMIC },
+	{ (char *) 0, 0 }
+};
+
+struct enumeration ldap_methods = {
+	(struct enumeration *)0,
+	"ldap-methods", 1,
+	ldap_values
+};
+
+#if defined(USE_SSL)
+struct enumeration_value ldap_ssl_usage_values [] = {
+	{ "off", LDAP_SSL_OFF },
+	{ "on",LDAP_SSL_ON },
+	{ "ldaps", LDAP_SSL_LDAPS },
+	{ "start_tls", LDAP_SSL_TLS },
+	{ (char *) 0, 0 }
+};
+
+struct enumeration ldap_ssl_usage_enum = {
+	(struct enumeration *)0,
+	"ldap-ssl-usage", 1,
+	ldap_ssl_usage_values
+};
+
+struct enumeration_value ldap_tls_reqcert_values [] = {
+	{ "never", LDAP_OPT_X_TLS_NEVER },
+	{ "hard", LDAP_OPT_X_TLS_HARD  },
+	{ "demand", LDAP_OPT_X_TLS_DEMAND},
+	{ "allow", LDAP_OPT_X_TLS_ALLOW },
+	{ "try", LDAP_OPT_X_TLS_TRY   },
+	{ (char *) 0, 0 }
+};
+struct enumeration ldap_tls_reqcert_enum = {
+	(struct enumeration *)0,
+	"ldap-tls-reqcert", 1,
+	ldap_tls_reqcert_values
+};
+
+struct enumeration_value ldap_tls_crlcheck_values [] = {
+	{ "none", LDAP_OPT_X_TLS_CRL_NONE},
+	{ "peer", LDAP_OPT_X_TLS_CRL_PEER},
+	{ "all",  LDAP_OPT_X_TLS_CRL_ALL },
+	{ (char *) 0, 0 }
+};
+struct enumeration ldap_tls_crlcheck_enum = {
+	(struct enumeration *)0,
+	"ldap-tls-crlcheck", 1,
+	ldap_tls_crlcheck_values
+};
+#endif
+#endif
+
 struct enumeration_value ddns_styles_values [] = {
 	{ "none", 0 },
 	{ "ad-hoc", 1 },
diff -up dhcp-4.0.0/dst/Makefile.am.ldap dhcp-4.0.0/dst/Makefile.am
--- dhcp-4.0.0/dst/Makefile.am.ldap	2007-05-29 06:32:10.000000000 -1000
+++ dhcp-4.0.0/dst/Makefile.am	2008-01-14 10:42:59.000000000 -1000
@@ -2,7 +2,12 @@ AM_CPPFLAGS = -DMINIRES_LIB -DHMAC_MD5
 
 lib_LIBRARIES = libdst.a
 
+noinst_LIBRARIES = libdstnomd5.a
+
 libdst_a_SOURCES = dst_support.c dst_api.c hmac_link.c md5_dgst.c \
 		   base64.c prandom.c
 
+libdstnomd5_a_SOURCES = dst_support.c dst_api.c hmac_link.c \
+		   base64.c prandom.c
+
 EXTRA_DIST = dst_internal.h md5.h md5_locl.h
diff -up dhcp-4.0.0/common/print.c.ldap dhcp-4.0.0/common/print.c
--- dhcp-4.0.0/common/print.c.ldap	2007-10-01 04:47:35.000000000 -1000
+++ dhcp-4.0.0/common/print.c	2008-01-14 10:42:59.000000000 -1000
@@ -163,9 +163,9 @@ char *print_base64 (const unsigned char 
 }
 
 char *print_hw_addr (htype, hlen, data)
-	int htype;
-	int hlen;
-	unsigned char *data;
+	const int htype;
+	const int hlen;
+	const unsigned char *data;
 {
 	static char habuf [49];
 	char *s;
diff -up dhcp-4.0.0/common/conflex.c.ldap dhcp-4.0.0/common/conflex.c
--- dhcp-4.0.0/common/conflex.c.ldap	2007-10-31 09:13:33.000000000 -1000
+++ dhcp-4.0.0/common/conflex.c	2008-01-14 10:42:59.000000000 -1000
@@ -43,6 +43,7 @@ static enum dhcp_token read_string PROTO
 static enum dhcp_token read_number PROTO ((int, struct parse *));
 static enum dhcp_token read_num_or_name PROTO ((int, struct parse *));
 static enum dhcp_token intern PROTO ((char *, enum dhcp_token));
+static int read_function PROTO ((struct parse *));
 
 isc_result_t new_parse (cfile, file, inbuf, buflen, name, eolp)
 	struct parse **cfile;
@@ -76,6 +77,10 @@ isc_result_t new_parse (cfile, file, inb
 	tmp->file = file;
 	tmp->eol_token = eolp;
 
+	if (file != -1) {
+		tmp -> read_function = read_function;
+	}
+
 	if (inbuf != NULL) {
 		tmp->inbuf = inbuf;
 		tmp->buflen = buflen;
@@ -170,9 +175,13 @@ static int get_char (cfile)
 	/* My kingdom for WITH... */
 	int c;
 
-	if (cfile->bufix == cfile->buflen)
-		c = EOF;
-	else {
+	if (cfile->bufix == cfile->buflen) {
+		if (cfile -> read_function) {
+			c = cfile -> read_function (cfile);
+		} else {
+			c = EOF;
+		}
+	} else {
 		c = cfile->inbuf [cfile->bufix];
 		cfile->bufix++;
 	}
@@ -1415,3 +1424,23 @@ intern(char *atom, enum dhcp_token dfv) 
 	}
 	return dfv;
 }
+
+static int
+read_function (struct parse * cfile)
+{
+	int c;
+
+	cfile -> buflen = read (cfile -> file, cfile -> inbuf, cfile -> bufsiz);
+	if (cfile -> buflen == 0) {
+		c = EOF;
+		cfile -> bufix = 0;
+	} else if (cfile -> buflen < 0) {
+		c = EOF;
+		cfile -> bufix = cfile -> buflen = 0;
+	} else {
+		c = cfile -> inbuf [0];
+		cfile -> bufix = 1;
+	}
+
+	return c;
+}
diff -up dhcp-4.0.0/includes/dhcpd.h.ldap dhcp-4.0.0/includes/dhcpd.h
--- dhcp-4.0.0/includes/dhcpd.h.ldap	2007-12-08 09:36:00.000000000 -1000
+++ dhcp-4.0.0/includes/dhcpd.h	2008-01-14 10:42:59.000000000 -1000
@@ -101,6 +101,11 @@ typedef time_t TIME;
 #include <isc-dhcp/result.h>
 #include <omapip/omapip_p.h>
 
+#if defined(LDAP_CONFIGURATION)
+# include <ldap.h>
+# include <sys/utsname.h> /* for uname() */
+#endif
+
 #if !defined (BYTE_NAME_HASH_SIZE)
 # define BYTE_NAME_HASH_SIZE	401	/* Default would be ridiculous. */
 #endif
@@ -290,6 +295,8 @@ struct parse {
 	size_t bufsiz;
 
 	struct parse *saved_state;
+
+	int (*read_function) (struct parse *);
 };
 
 /* Variable-length array of data. */
@@ -421,6 +428,32 @@ struct hardware {
 	u_int8_t hbuf [17];
 };
 
+#if defined(LDAP_CONFIGURATION)
+# define LDAP_BUFFER_SIZE		8192
+# define LDAP_METHOD_STATIC		0
+# define LDAP_METHOD_DYNAMIC	1
+#if defined (USE_SSL)
+# define LDAP_SSL_OFF			0
+# define LDAP_SSL_ON			1
+# define LDAP_SSL_TLS			2
+# define LDAP_SSL_LDAPS			3
+#endif
+
+/* This is a tree of the current configuration we are building from LDAP */
+struct ldap_config_stack {
+	LDAPMessage * res;	/* Pointer returned from ldap_search */
+	LDAPMessage * ldent;	/* Current item in LDAP that we're processing.
+							in res */
+	int close_brace;	/* Put a closing } after we're through with
+						this item */
+	int processed;	/* We set this flag if this base item has been
+					processed. After this base item is processed,
+					we can start processing the children */
+	struct ldap_config_stack *children;
+	struct ldap_config_stack *next;
+};
+#endif
+
 typedef enum {
 	server_startup = 0,
 	server_running = 1,
@@ -626,6 +659,29 @@ struct lease_state {
 # define DEFAULT_PING_TIMEOUT 1
 #endif
 
+#if defined(LDAP_CONFIGURATION)
+# define SV_LDAP_SERVER				47
+# define SV_LDAP_PORT				48
+# define SV_LDAP_USERNAME			49
+# define SV_LDAP_PASSWORD			50
+# define SV_LDAP_BASE_DN			51
+# define SV_LDAP_METHOD				52
+# define SV_LDAP_DEBUG_FILE			53
+# define SV_LDAP_DHCP_SERVER_CN		54
+# define SV_LDAP_REFERRALS			55
+#if defined (USE_SSL)
+# define SV_LDAP_SSL				56
+# define SV_LDAP_TLS_REQCERT		57
+# define SV_LDAP_TLS_CA_FILE		58
+# define SV_LDAP_TLS_CA_DIR			59
+# define SV_LDAP_TLS_CERT			60
+# define SV_LDAP_TLS_KEY			61
+# define SV_LDAP_TLS_CRLCHECK		62
+# define SV_LDAP_TLS_CIPHERS		63
+# define SV_LDAP_TLS_RANDFILE		64
+#endif
+#endif
+
 #if !defined (DEFAULT_DEFAULT_LEASE_TIME)
 # define DEFAULT_DEFAULT_LEASE_TIME 43200
 #endif
@@ -2035,7 +2091,7 @@ extern int db_time_format;
 char *quotify_string (const char *, const char *, int);
 char *quotify_buf (const unsigned char *, unsigned, const char *, int);
 char *print_base64 (const unsigned char *, unsigned, const char *, int);
-char *print_hw_addr PROTO ((int, int, unsigned char *));
+char *print_hw_addr PROTO ((const int, const int, const unsigned char *));
 void print_lease PROTO ((struct lease *));
 void dump_raw PROTO ((const unsigned char *, unsigned));
 void dump_packet_option (struct option_cache *, struct packet *,
@@ -3158,6 +3214,20 @@ OMAPI_OBJECT_ALLOC_DECL (dhcp_failover_l
 
 const char *binding_state_print (enum failover_state);
 
+/* ldap.c */
+#if defined(LDAP_CONFIGURATION)
+extern struct enumeration ldap_methods;
+#if defined (USE_SSL)
+extern struct enumeration ldap_ssl_usage_enum;
+extern struct enumeration ldap_tls_reqcert_enum;
+extern struct enumeration ldap_tls_crlcheck_enum;
+#endif
+isc_result_t ldap_read_config (void);
+int find_haddr_in_ldap (struct host_decl **, int, unsigned,
+                        const unsigned char *, const char *, int);
+int find_subclass_in_ldap (struct class *, struct class **,
+                           struct data_string *);
+#endif
 
 /* mdb6.c */
 HASH_FUNCTIONS_DECL(ia_na, unsigned char *, struct ia_na, ia_na_hash_t);
diff -up dhcp-4.0.0/includes/site.h.ldap dhcp-4.0.0/includes/site.h
--- dhcp-4.0.0/includes/site.h.ldap	2006-07-31 12:19:51.000000000 -1000
+++ dhcp-4.0.0/includes/site.h	2008-01-14 10:42:59.000000000 -1000
@@ -183,3 +183,13 @@
    traces. */
 
 #define TRACING
+
+/* Define this if you want to read your config from LDAP. Read README.ldap
+   about how to set this up */
+
+#define LDAP_CONFIGURATION
+
+/* Define this if you want to enable LDAP over a SSL connection. You will need
+   to add -lcrypto -lssl to the LIBS= line of server/Makefile */
+
+#define USE_SSL
diff -up /dev/null dhcp-4.0.0/includes/ldap_casa.h
--- /dev/null	2008-01-11 10:40:59.147013395 -1000
+++ dhcp-4.0.0/includes/ldap_casa.h	2008-01-14 10:42:59.000000000 -1000
@@ -0,0 +1,83 @@
+/* ldap_casa.h
+   
+   Definition for CASA modules... */
+
+/* Copyright (c) 2004 Internet Systems Consorium, Inc. ("ISC")
+ * Copyright (c) 1995-2003 Internet Software Consortium.
+ * Copyright (c) 2006 Novell, Inc.
+
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met: 
+ * 1.Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer. 
+ * 2.Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution. 
+ * 3.Neither the name of ISC, ISC DHCP, nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission. 
+
+ * THIS SOFTWARE IS PROVIDED BY INTERNET SYSTEMS CONSORTIUM AND CONTRIBUTORS 
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ISC OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+
+ * This file was written by S Kalyanasundaram <skalyanasundaram@novell.com>
+ */
+
+#if defined(LDAP_CASA_AUTH)
+#ifndef __LDAP_CASA_H__
+#define __LDAP_CASA_H__
+
+#include <micasa_mgmd.h>
+#include <dlfcn.h>
+#include <string.h>
+
+#define MICASA_LIB     "libmicasa.so.1"
+
+SSCS_TYPEDEF_LIBCALL(int, CASA_GetCredential_T)
+(
+       uint32_t            ssFlags,
+       SSCS_SECRET_ID_T   *appSecretID,
+       SSCS_SECRET_ID_T   *sharedSecretID,
+       uint32_t           *credentialType,
+       void               *credential,
+       SSCS_EXT_T         *ext 
+);
+SSCS_TYPEDEF_LIBCALL(int, CASA_SetCredential_T)
+(
+       uint32_t            ssFlags,
+       SSCS_SECRET_ID_T   *appSecretID,
+       SSCS_SECRET_ID_T   *sharedSecretID,
+       uint32_t            credentialType,
+       void               *credential,
+       SSCS_EXT_T         *ext
+);
+
+SSCS_TYPEDEF_LIBCALL(int, CASA_RemoveCredential_T)
+(
+       uint32_t            ssFlags,
+       SSCS_SECRET_ID_T   *appSecretID,
+       SSCS_SECRET_ID_T   *sharedSecretID,
+       SSCS_EXT_T         *ext
+);
+static CASA_GetCredential_T            p_miCASAGetCredential = NULL;
+static CASA_SetCredential_T            p_miCASASetCredential = NULL;
+static CASA_RemoveCredential_T         p_miCASARemoveCredential = NULL;
+static void                            *casaIDK = NULL;
+
+int load_casa(void);
+static void release_casa(void);
+int load_uname_pwd_from_miCASA(char **, char **);
+
+#endif /* __LDAP_CASA_H__ */
+#endif /* LDAP_CASA_AUTH */
+