-Added OpenSSL and HTTPS support

-Built-in version of the library for Windows, Android and iOS (other OSs use system one)
-Small fixes all around

1 files changed, 2221 insertions, 0 deletions

diff --git a/drivers/builtin_openssl/ssl/kssl.c b/drivers/builtin_openssl/ssl/kssl.c
new file mode 100644
index 0000000000..fd7c67bb1f
--- /dev/null
+++ b/drivers/builtin_openssl/ssl/kssl.c
@@ -0,0 +1,2221 @@
+/* ssl/kssl.c -*- mode: C; c-file-style: "eay" -*- */
+/* Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 The OpenSSL Project.  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. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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 product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+
+/*  ssl/kssl.c  --  Routines to support (& debug) Kerberos5 auth for openssl
+**
+**  19990701	VRS 	Started.
+**  200011??	Jeffrey Altman, Richard Levitte
+**          		Generalized for Heimdal, Newer MIT, & Win32.
+**          		Integrated into main OpenSSL 0.9.7 snapshots.
+**  20010413	Simon Wilkinson, VRS
+**          		Real RFC2712 KerberosWrapper replaces AP_REQ.
+*/
+
+#include <openssl/opensslconf.h>
+
+#include <string.h>
+
+#define KRB5_PRIVATE	1
+
+#include <openssl/ssl.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/krb5_asn.h>
+#include "kssl_lcl.h"
+
+#ifndef OPENSSL_NO_KRB5
+
+#ifndef ENOMEM
+#define ENOMEM KRB5KRB_ERR_GENERIC
+#endif
+
+/* 
+ * When OpenSSL is built on Windows, we do not want to require that
+ * the Kerberos DLLs be available in order for the OpenSSL DLLs to
+ * work.  Therefore, all Kerberos routines are loaded at run time
+ * and we do not link to a .LIB file.
+ */
+
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
+/* 
+ * The purpose of the following pre-processor statements is to provide
+ * compatibility with different releases of MIT Kerberos for Windows.
+ * All versions up to 1.2 used macros.  But macros do not allow for
+ * a binary compatible interface for DLLs.  Therefore, all macros are
+ * being replaced by function calls.  The following code will allow
+ * an OpenSSL DLL built on Windows to work whether or not the macro
+ * or function form of the routines are utilized.
+ */
+#ifdef  krb5_cc_get_principal
+#define NO_DEF_KRB5_CCACHE
+#undef  krb5_cc_get_principal
+#endif
+#define krb5_cc_get_principal    kssl_krb5_cc_get_principal
+
+#define krb5_free_data_contents  kssl_krb5_free_data_contents   
+#define krb5_free_context        kssl_krb5_free_context         
+#define krb5_auth_con_free       kssl_krb5_auth_con_free        
+#define krb5_free_principal      kssl_krb5_free_principal       
+#define krb5_mk_req_extended     kssl_krb5_mk_req_extended      
+#define krb5_get_credentials     kssl_krb5_get_credentials      
+#define krb5_cc_default          kssl_krb5_cc_default           
+#define krb5_sname_to_principal  kssl_krb5_sname_to_principal   
+#define krb5_init_context        kssl_krb5_init_context         
+#define krb5_free_ticket         kssl_krb5_free_ticket          
+#define krb5_rd_req              kssl_krb5_rd_req               
+#define krb5_kt_default          kssl_krb5_kt_default           
+#define krb5_kt_resolve          kssl_krb5_kt_resolve           
+/* macros in mit 1.2.2 and earlier; functions in mit 1.2.3 and greater */
+#ifndef krb5_kt_close
+#define krb5_kt_close            kssl_krb5_kt_close
+#endif /* krb5_kt_close */
+#ifndef krb5_kt_get_entry
+#define krb5_kt_get_entry        kssl_krb5_kt_get_entry
+#endif /* krb5_kt_get_entry */
+#define krb5_auth_con_init       kssl_krb5_auth_con_init        
+
+#define krb5_principal_compare   kssl_krb5_principal_compare
+#define krb5_decrypt_tkt_part    kssl_krb5_decrypt_tkt_part
+#define krb5_timeofday           kssl_krb5_timeofday
+#define krb5_rc_default          kssl_krb5_rc_default
+
+#ifdef krb5_rc_initialize
+#undef krb5_rc_initialize
+#endif
+#define krb5_rc_initialize   kssl_krb5_rc_initialize
+
+#ifdef krb5_rc_get_lifespan
+#undef krb5_rc_get_lifespan
+#endif
+#define krb5_rc_get_lifespan kssl_krb5_rc_get_lifespan
+
+#ifdef krb5_rc_destroy
+#undef krb5_rc_destroy
+#endif
+#define krb5_rc_destroy      kssl_krb5_rc_destroy
+
+#define valid_cksumtype      kssl_valid_cksumtype
+#define krb5_checksum_size   kssl_krb5_checksum_size
+#define krb5_kt_free_entry   kssl_krb5_kt_free_entry
+#define krb5_auth_con_setrcache  kssl_krb5_auth_con_setrcache
+#define krb5_auth_con_getrcache  kssl_krb5_auth_con_getrcache
+#define krb5_get_server_rcache   kssl_krb5_get_server_rcache
+
+/* Prototypes for built in stubs */
+void kssl_krb5_free_data_contents(krb5_context, krb5_data *);
+void kssl_krb5_free_principal(krb5_context, krb5_principal );
+krb5_error_code kssl_krb5_kt_resolve(krb5_context,
+                                     krb5_const char *,
+                                     krb5_keytab *);
+krb5_error_code kssl_krb5_kt_default(krb5_context,
+                                     krb5_keytab *);
+krb5_error_code kssl_krb5_free_ticket(krb5_context, krb5_ticket *);
+krb5_error_code kssl_krb5_rd_req(krb5_context, krb5_auth_context *, 
+                                 krb5_const krb5_data *,
+                                 krb5_const_principal, krb5_keytab, 
+                                 krb5_flags *,krb5_ticket **);
+
+krb5_boolean kssl_krb5_principal_compare(krb5_context, krb5_const_principal,
+                                         krb5_const_principal);
+krb5_error_code kssl_krb5_mk_req_extended(krb5_context,
+                                          krb5_auth_context  *,
+                                          krb5_const krb5_flags,
+                                          krb5_data  *,
+                                          krb5_creds  *,
+                                          krb5_data  * );
+krb5_error_code kssl_krb5_init_context(krb5_context *);
+void kssl_krb5_free_context(krb5_context);
+krb5_error_code kssl_krb5_cc_default(krb5_context,krb5_ccache  *);
+krb5_error_code kssl_krb5_sname_to_principal(krb5_context,
+                                             krb5_const char  *,
+                                             krb5_const char  *,
+                                             krb5_int32,
+                                             krb5_principal  *);
+krb5_error_code kssl_krb5_get_credentials(krb5_context,
+                                          krb5_const krb5_flags,
+                                          krb5_ccache,
+                                          krb5_creds  *,
+                                          krb5_creds  *  *);
+krb5_error_code kssl_krb5_auth_con_init(krb5_context,
+                                        krb5_auth_context  *);
+krb5_error_code kssl_krb5_cc_get_principal(krb5_context context, 
+                                           krb5_ccache cache,
+                                           krb5_principal *principal);
+krb5_error_code kssl_krb5_auth_con_free(krb5_context,krb5_auth_context);
+size_t kssl_krb5_checksum_size(krb5_context context,krb5_cksumtype ctype);
+krb5_boolean kssl_valid_cksumtype(krb5_cksumtype ctype);
+krb5_error_code krb5_kt_free_entry(krb5_context,krb5_keytab_entry FAR * );
+krb5_error_code kssl_krb5_auth_con_setrcache(krb5_context, 
+                                             krb5_auth_context, 
+                                             krb5_rcache);
+krb5_error_code kssl_krb5_get_server_rcache(krb5_context, 
+                                            krb5_const krb5_data *,
+                                            krb5_rcache *);
+krb5_error_code kssl_krb5_auth_con_getrcache(krb5_context, 
+                                             krb5_auth_context,
+                                             krb5_rcache *);
+
+/* Function pointers (almost all Kerberos functions are _stdcall) */
+static void (_stdcall *p_krb5_free_data_contents)(krb5_context, krb5_data *)
+	=NULL;
+static void (_stdcall *p_krb5_free_principal)(krb5_context, krb5_principal )
+	=NULL;
+static krb5_error_code(_stdcall *p_krb5_kt_resolve)
+			(krb5_context, krb5_const char *, krb5_keytab *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_kt_default)(krb5_context,
+                                                     krb5_keytab *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_free_ticket)(krb5_context, 
+                                                      krb5_ticket *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_rd_req)(krb5_context, 
+                                                 krb5_auth_context *, 
+                                                 krb5_const krb5_data *,
+                                                 krb5_const_principal, 
+                                                 krb5_keytab, krb5_flags *,
+                                                 krb5_ticket **)=NULL;
+static krb5_error_code (_stdcall *p_krb5_mk_req_extended)
+			(krb5_context, krb5_auth_context *,
+			 krb5_const krb5_flags, krb5_data *, krb5_creds *,
+			 krb5_data * )=NULL;
+static krb5_error_code (_stdcall *p_krb5_init_context)(krb5_context *)=NULL;
+static void (_stdcall *p_krb5_free_context)(krb5_context)=NULL;
+static krb5_error_code (_stdcall *p_krb5_cc_default)(krb5_context,
+                                                     krb5_ccache  *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_sname_to_principal)
+			(krb5_context, krb5_const char *, krb5_const char *,
+			 krb5_int32, krb5_principal *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_get_credentials)
+			(krb5_context, krb5_const krb5_flags, krb5_ccache,
+			 krb5_creds *, krb5_creds **)=NULL;
+static krb5_error_code (_stdcall *p_krb5_auth_con_init)
+			(krb5_context, krb5_auth_context *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_cc_get_principal)
+			(krb5_context context, krb5_ccache cache,
+			 krb5_principal *principal)=NULL;
+static krb5_error_code (_stdcall *p_krb5_auth_con_free)
+			(krb5_context, krb5_auth_context)=NULL;
+static krb5_error_code (_stdcall *p_krb5_decrypt_tkt_part)
+                        (krb5_context, krb5_const krb5_keyblock *,
+                                           krb5_ticket *)=NULL;
+static krb5_error_code (_stdcall *p_krb5_timeofday)
+                        (krb5_context context, krb5_int32 *timeret)=NULL;
+static krb5_error_code (_stdcall *p_krb5_rc_default)
+                        (krb5_context context, krb5_rcache *rc)=NULL;
+static krb5_error_code (_stdcall *p_krb5_rc_initialize)
+                        (krb5_context context, krb5_rcache rc,
+                                     krb5_deltat lifespan)=NULL;
+static krb5_error_code (_stdcall *p_krb5_rc_get_lifespan)
+                        (krb5_context context, krb5_rcache rc,
+                                       krb5_deltat *lifespan)=NULL;
+static krb5_error_code (_stdcall *p_krb5_rc_destroy)
+                        (krb5_context context, krb5_rcache rc)=NULL;
+static krb5_boolean (_stdcall *p_krb5_principal_compare)
+                     (krb5_context, krb5_const_principal, krb5_const_principal)=NULL;
+static size_t (_stdcall *p_krb5_checksum_size)(krb5_context context,krb5_cksumtype ctype)=NULL;
+static krb5_boolean (_stdcall *p_valid_cksumtype)(krb5_cksumtype ctype)=NULL;
+static krb5_error_code (_stdcall *p_krb5_kt_free_entry)
+                        (krb5_context,krb5_keytab_entry * )=NULL;
+static krb5_error_code (_stdcall * p_krb5_auth_con_setrcache)(krb5_context, 
+                                                               krb5_auth_context, 
+                                                               krb5_rcache)=NULL;
+static krb5_error_code (_stdcall * p_krb5_get_server_rcache)(krb5_context, 
+                                                              krb5_const krb5_data *, 
+                                                              krb5_rcache *)=NULL;
+static krb5_error_code (* p_krb5_auth_con_getrcache)(krb5_context, 
+                                                      krb5_auth_context,
+                                                      krb5_rcache *)=NULL;
+static krb5_error_code (_stdcall * p_krb5_kt_close)(krb5_context context, 
+                                                    krb5_keytab keytab)=NULL;
+static krb5_error_code (_stdcall * p_krb5_kt_get_entry)(krb5_context context, 
+                                                        krb5_keytab keytab,
+                       krb5_const_principal principal, krb5_kvno vno,
+                       krb5_enctype enctype, krb5_keytab_entry *entry)=NULL;
+static int krb5_loaded = 0;     /* only attempt to initialize func ptrs once */
+
+/* Function to Load the Kerberos 5 DLL and initialize function pointers */
+void
+load_krb5_dll(void)
+	{
+	HANDLE hKRB5_32;
+    
+	krb5_loaded++;
+	hKRB5_32 = LoadLibrary(TEXT("KRB5_32"));
+	if (!hKRB5_32)
+		return;
+
+	(FARPROC) p_krb5_free_data_contents =
+		GetProcAddress( hKRB5_32, "krb5_free_data_contents" );
+	(FARPROC) p_krb5_free_context =
+		GetProcAddress( hKRB5_32, "krb5_free_context" );
+	(FARPROC) p_krb5_auth_con_free =
+		GetProcAddress( hKRB5_32, "krb5_auth_con_free" );
+	(FARPROC) p_krb5_free_principal =
+		GetProcAddress( hKRB5_32, "krb5_free_principal" );
+	(FARPROC) p_krb5_mk_req_extended =
+		GetProcAddress( hKRB5_32, "krb5_mk_req_extended" );
+	(FARPROC) p_krb5_get_credentials =
+		GetProcAddress( hKRB5_32, "krb5_get_credentials" );
+	(FARPROC) p_krb5_cc_get_principal =
+		GetProcAddress( hKRB5_32, "krb5_cc_get_principal" );
+	(FARPROC) p_krb5_cc_default =
+		GetProcAddress( hKRB5_32, "krb5_cc_default" );
+	(FARPROC) p_krb5_sname_to_principal =
+		GetProcAddress( hKRB5_32, "krb5_sname_to_principal" );
+	(FARPROC) p_krb5_init_context =
+		GetProcAddress( hKRB5_32, "krb5_init_context" );
+	(FARPROC) p_krb5_free_ticket =
+		GetProcAddress( hKRB5_32, "krb5_free_ticket" );
+	(FARPROC) p_krb5_rd_req =
+		GetProcAddress( hKRB5_32, "krb5_rd_req" );
+	(FARPROC) p_krb5_principal_compare =
+		GetProcAddress( hKRB5_32, "krb5_principal_compare" );
+	(FARPROC) p_krb5_decrypt_tkt_part =
+		GetProcAddress( hKRB5_32, "krb5_decrypt_tkt_part" );
+	(FARPROC) p_krb5_timeofday =
+		GetProcAddress( hKRB5_32, "krb5_timeofday" );
+	(FARPROC) p_krb5_rc_default =
+		GetProcAddress( hKRB5_32, "krb5_rc_default" );
+	(FARPROC) p_krb5_rc_initialize =
+		GetProcAddress( hKRB5_32, "krb5_rc_initialize" );
+	(FARPROC) p_krb5_rc_get_lifespan =
+		GetProcAddress( hKRB5_32, "krb5_rc_get_lifespan" );
+	(FARPROC) p_krb5_rc_destroy =
+		GetProcAddress( hKRB5_32, "krb5_rc_destroy" );
+	(FARPROC) p_krb5_kt_default =
+		GetProcAddress( hKRB5_32, "krb5_kt_default" );
+	(FARPROC) p_krb5_kt_resolve =
+		GetProcAddress( hKRB5_32, "krb5_kt_resolve" );
+	(FARPROC) p_krb5_auth_con_init =
+		GetProcAddress( hKRB5_32, "krb5_auth_con_init" );
+        (FARPROC) p_valid_cksumtype =
+                GetProcAddress( hKRB5_32, "valid_cksumtype" );
+        (FARPROC) p_krb5_checksum_size =
+                GetProcAddress( hKRB5_32, "krb5_checksum_size" );
+        (FARPROC) p_krb5_kt_free_entry =
+                GetProcAddress( hKRB5_32, "krb5_kt_free_entry" );
+        (FARPROC) p_krb5_auth_con_setrcache =
+                GetProcAddress( hKRB5_32, "krb5_auth_con_setrcache" );
+        (FARPROC) p_krb5_get_server_rcache =
+                GetProcAddress( hKRB5_32, "krb5_get_server_rcache" );
+        (FARPROC) p_krb5_auth_con_getrcache =
+                GetProcAddress( hKRB5_32, "krb5_auth_con_getrcache" );
+        (FARPROC) p_krb5_kt_close =
+                GetProcAddress( hKRB5_32, "krb5_kt_close" );
+        (FARPROC) p_krb5_kt_get_entry =
+                GetProcAddress( hKRB5_32, "krb5_kt_get_entry" );
+	}
+
+/* Stubs for each function to be dynamicly loaded */
+void
+kssl_krb5_free_data_contents(krb5_context CO, krb5_data  * data)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_free_data_contents )
+		p_krb5_free_data_contents(CO,data);
+	}
+
+krb5_error_code
+kssl_krb5_mk_req_extended (krb5_context CO,
+                          krb5_auth_context  * pACO,
+                          krb5_const krb5_flags F,
+                          krb5_data  * pD1,
+                          krb5_creds  * pC,
+                          krb5_data  * pD2)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_mk_req_extended )
+		return(p_krb5_mk_req_extended(CO,pACO,F,pD1,pC,pD2));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+krb5_error_code
+kssl_krb5_auth_con_init(krb5_context CO,
+                       krb5_auth_context  * pACO)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_auth_con_init )
+		return(p_krb5_auth_con_init(CO,pACO));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+krb5_error_code
+kssl_krb5_auth_con_free (krb5_context CO,
+                        krb5_auth_context ACO)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_auth_con_free )
+		return(p_krb5_auth_con_free(CO,ACO));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+krb5_error_code
+kssl_krb5_get_credentials(krb5_context CO,
+                         krb5_const krb5_flags F,
+                         krb5_ccache CC,
+                         krb5_creds  * pCR,
+                         krb5_creds  ** ppCR)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_get_credentials )
+		return(p_krb5_get_credentials(CO,F,CC,pCR,ppCR));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+krb5_error_code
+kssl_krb5_sname_to_principal(krb5_context CO,
+                            krb5_const char  * pC1,
+                            krb5_const char  * pC2,
+                            krb5_int32 I,
+                            krb5_principal  * pPR)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_sname_to_principal )
+		return(p_krb5_sname_to_principal(CO,pC1,pC2,I,pPR));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_cc_default(krb5_context CO,
+                    krb5_ccache  * pCC)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_cc_default )
+		return(p_krb5_cc_default(CO,pCC));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_init_context(krb5_context * pCO)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_init_context )
+		return(p_krb5_init_context(pCO));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+void
+kssl_krb5_free_context(krb5_context CO)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_free_context )
+		p_krb5_free_context(CO);
+	}
+
+void
+kssl_krb5_free_principal(krb5_context c, krb5_principal p)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_free_principal )
+		p_krb5_free_principal(c,p);
+	}
+
+krb5_error_code
+kssl_krb5_kt_resolve(krb5_context con,
+                    krb5_const char * sz,
+                    krb5_keytab * kt)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_kt_resolve )
+		return(p_krb5_kt_resolve(con,sz,kt));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_kt_default(krb5_context con,
+                    krb5_keytab * kt)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_kt_default )
+		return(p_krb5_kt_default(con,kt));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_free_ticket(krb5_context con,
+                     krb5_ticket * kt)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_free_ticket )
+		return(p_krb5_free_ticket(con,kt));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_rd_req(krb5_context con, krb5_auth_context * pacon,
+                krb5_const krb5_data * data,
+                krb5_const_principal princ, krb5_keytab keytab,
+                krb5_flags * flags, krb5_ticket ** pptkt)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_rd_req )
+		return(p_krb5_rd_req(con,pacon,data,princ,keytab,flags,pptkt));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_boolean
+krb5_principal_compare(krb5_context con, krb5_const_principal princ1,
+                krb5_const_principal princ2)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_principal_compare )
+		return(p_krb5_principal_compare(con,princ1,princ2));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_decrypt_tkt_part(krb5_context con, krb5_const krb5_keyblock *keys,
+                krb5_ticket *ticket)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_decrypt_tkt_part )
+		return(p_krb5_decrypt_tkt_part(con,keys,ticket));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_timeofday(krb5_context con, krb5_int32 *timeret)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_timeofday )
+		return(p_krb5_timeofday(con,timeret));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_rc_default(krb5_context con, krb5_rcache *rc)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_rc_default )
+		return(p_krb5_rc_default(con,rc));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_rc_initialize(krb5_context con, krb5_rcache rc, krb5_deltat lifespan)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_rc_initialize )
+		return(p_krb5_rc_initialize(con, rc, lifespan));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_rc_get_lifespan(krb5_context con, krb5_rcache rc, krb5_deltat *lifespanp)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_rc_get_lifespan )
+		return(p_krb5_rc_get_lifespan(con, rc, lifespanp));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+krb5_rc_destroy(krb5_context con, krb5_rcache rc)
+	{
+	if (!krb5_loaded)
+		load_krb5_dll();
+
+	if ( p_krb5_rc_destroy )
+		return(p_krb5_rc_destroy(con, rc));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+size_t 
+krb5_checksum_size(krb5_context context,krb5_cksumtype ctype)
+        {
+        if (!krb5_loaded)
+                load_krb5_dll();
+
+        if ( p_krb5_checksum_size )
+                return(p_krb5_checksum_size(context, ctype));
+        else
+                return KRB5KRB_ERR_GENERIC;
+        }
+
+krb5_boolean 
+valid_cksumtype(krb5_cksumtype ctype)
+        {
+        if (!krb5_loaded)
+                load_krb5_dll();
+
+        if ( p_valid_cksumtype )
+                return(p_valid_cksumtype(ctype));
+        else
+                return KRB5KRB_ERR_GENERIC;
+        }
+
+krb5_error_code 
+krb5_kt_free_entry(krb5_context con,krb5_keytab_entry * entry)
+        {
+        if (!krb5_loaded)
+                load_krb5_dll();
+
+        if ( p_krb5_kt_free_entry )
+                return(p_krb5_kt_free_entry(con,entry));
+        else
+                return KRB5KRB_ERR_GENERIC;
+        }
+                 
+/* Structure definitions  */
+#ifndef NO_DEF_KRB5_CCACHE
+#ifndef krb5_x
+#define krb5_x(ptr,args) ((ptr)?((*(ptr)) args):(abort(),1))
+#define krb5_xc(ptr,args) ((ptr)?((*(ptr)) args):(abort(),(char*)0))
+#endif 
+
+typedef	krb5_pointer	krb5_cc_cursor;	/* cursor for sequential lookup */
+
+typedef struct _krb5_ccache
+	{
+	krb5_magic magic;
+	struct _krb5_cc_ops FAR *ops;
+	krb5_pointer data;
+	} *krb5_ccache;
+
+typedef struct _krb5_cc_ops
+	{
+	krb5_magic magic;
+	char  *prefix;
+	char  * (KRB5_CALLCONV *get_name)
+		(krb5_context, krb5_ccache);
+	krb5_error_code (KRB5_CALLCONV *resolve)
+		(krb5_context, krb5_ccache  *, const char  *);
+	krb5_error_code (KRB5_CALLCONV *gen_new)
+		(krb5_context, krb5_ccache  *);
+	krb5_error_code (KRB5_CALLCONV *init)
+		(krb5_context, krb5_ccache, krb5_principal);
+	krb5_error_code (KRB5_CALLCONV *destroy)
+		(krb5_context, krb5_ccache);
+	krb5_error_code (KRB5_CALLCONV *close)
+		(krb5_context, krb5_ccache);
+	krb5_error_code (KRB5_CALLCONV *store)
+		(krb5_context, krb5_ccache, krb5_creds  *);
+	krb5_error_code (KRB5_CALLCONV *retrieve)
+		(krb5_context, krb5_ccache,
+		krb5_flags, krb5_creds  *, krb5_creds  *);
+	krb5_error_code (KRB5_CALLCONV *get_princ)
+		(krb5_context, krb5_ccache, krb5_principal  *);
+	krb5_error_code (KRB5_CALLCONV *get_first)
+		(krb5_context, krb5_ccache, krb5_cc_cursor  *);
+	krb5_error_code (KRB5_CALLCONV *get_next)
+		(krb5_context, krb5_ccache,
+		krb5_cc_cursor  *, krb5_creds  *);
+	krb5_error_code (KRB5_CALLCONV *end_get)
+		(krb5_context, krb5_ccache, krb5_cc_cursor  *);
+	krb5_error_code (KRB5_CALLCONV *remove_cred)
+		(krb5_context, krb5_ccache,
+		krb5_flags, krb5_creds  *);
+	krb5_error_code (KRB5_CALLCONV *set_flags)
+		(krb5_context, krb5_ccache, krb5_flags);
+	} krb5_cc_ops;
+#endif /* NO_DEF_KRB5_CCACHE */
+
+krb5_error_code 
+kssl_krb5_cc_get_principal
+    (krb5_context context, krb5_ccache cache,
+      krb5_principal *principal)
+	{
+	if ( p_krb5_cc_get_principal )
+		return(p_krb5_cc_get_principal(context,cache,principal));
+	else
+		return(krb5_x
+			((cache)->ops->get_princ,(context, cache, principal)));
+	}
+
+krb5_error_code
+kssl_krb5_auth_con_setrcache(krb5_context con, krb5_auth_context acon,
+                             krb5_rcache rcache)
+        {
+        if ( p_krb5_auth_con_setrcache )
+                 return(p_krb5_auth_con_setrcache(con,acon,rcache));
+        else
+                 return KRB5KRB_ERR_GENERIC;
+        }
+
+krb5_error_code
+kssl_krb5_get_server_rcache(krb5_context con, krb5_const krb5_data * data,
+                            krb5_rcache * rcache) 
+        {
+	if ( p_krb5_get_server_rcache )
+		return(p_krb5_get_server_rcache(con,data,rcache));
+	else
+		return KRB5KRB_ERR_GENERIC;
+        }
+
+krb5_error_code
+kssl_krb5_auth_con_getrcache(krb5_context con, krb5_auth_context acon,
+                             krb5_rcache * prcache)
+        {
+	if ( p_krb5_auth_con_getrcache )
+		return(p_krb5_auth_con_getrcache(con,acon, prcache));
+	else
+		return KRB5KRB_ERR_GENERIC;
+	}
+ 
+krb5_error_code
+kssl_krb5_kt_close(krb5_context context, krb5_keytab keytab)
+	{
+	if ( p_krb5_kt_close )
+		return(p_krb5_kt_close(context,keytab));
+	else 
+		return KRB5KRB_ERR_GENERIC;
+	}
+
+krb5_error_code
+kssl_krb5_kt_get_entry(krb5_context context, krb5_keytab keytab,
+                       krb5_const_principal principal, krb5_kvno vno,
+                       krb5_enctype enctype, krb5_keytab_entry *entry)
+	{
+	if ( p_krb5_kt_get_entry )
+		return(p_krb5_kt_get_entry(context,keytab,principal,vno,enctype,entry));
+	else
+		return KRB5KRB_ERR_GENERIC;
+        }
+#endif  /* OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32 */
+
+
+/* memory allocation functions for non-temporary storage
+ * (e.g. stuff that gets saved into the kssl context) */
+static void* kssl_calloc(size_t nmemb, size_t size)
+{
+	void* p;
+	
+	p=OPENSSL_malloc(nmemb*size);
+	if (p){
+		memset(p, 0, nmemb*size);
+	}
+	return p;
+}
+
+#define kssl_malloc(size) OPENSSL_malloc((size))
+#define kssl_realloc(ptr, size) OPENSSL_realloc(ptr, size)
+#define kssl_free(ptr) OPENSSL_free((ptr))
+
+
+char
+*kstring(char *string)
+        {
+        static char	*null = "[NULL]";
+
+	return ((string == NULL)? null: string);
+        }
+
+/*	Given KRB5 enctype (basically DES or 3DES),
+**	return closest match openssl EVP_ encryption algorithm.
+**	Return NULL for unknown or problematic (krb5_dk_encrypt) enctypes.
+**	Assume ENCTYPE_*_RAW (krb5_raw_encrypt) are OK.
+*/
+const EVP_CIPHER *
+kssl_map_enc(krb5_enctype enctype)
+        {
+	switch (enctype)
+		{
+	case ENCTYPE_DES_HMAC_SHA1:		/*    EVP_des_cbc();       */
+	case ENCTYPE_DES_CBC_CRC:
+	case ENCTYPE_DES_CBC_MD4:
+	case ENCTYPE_DES_CBC_MD5:
+	case ENCTYPE_DES_CBC_RAW:
+				return EVP_des_cbc();
+				break;
+	case ENCTYPE_DES3_CBC_SHA1:		/*    EVP_des_ede3_cbc();  */
+	case ENCTYPE_DES3_CBC_SHA:
+	case ENCTYPE_DES3_CBC_RAW:
+				return EVP_des_ede3_cbc();
+				break;
+	default:                return NULL;
+				break;
+		}
+	}
+
+
+/*	Return true:1 if p "looks like" the start of the real authenticator
+**	described in kssl_skip_confound() below.  The ASN.1 pattern is
+**	"62 xx 30 yy" (APPLICATION-2, SEQUENCE), where xx-yy =~ 2, and
+**	xx and yy are possibly multi-byte length fields.
+*/
+static int 	kssl_test_confound(unsigned char *p)
+	{
+	int 	len = 2;
+	int 	xx = 0, yy = 0;
+
+	if (*p++ != 0x62)  return 0;
+	if (*p > 0x82)  return 0;
+	switch(*p)  {
+		case 0x82:  p++;          xx = (*p++ << 8);  xx += *p++;  break;
+		case 0x81:  p++;          xx =  *p++;  break;
+		case 0x80:  return 0;
+		default:    xx = *p++;  break;
+		}
+	if (*p++ != 0x30)  return 0;
+	if (*p > 0x82)  return 0;
+	switch(*p)  {
+		case 0x82:  p++; len+=2;  yy = (*p++ << 8);  yy += *p++;  break;
+		case 0x81:  p++; len++;   yy =  *p++;  break;
+		case 0x80:  return 0;
+		default:    yy = *p++;  break;
+		}
+
+	return (xx - len == yy)? 1: 0;
+	}
+
+/*	Allocate, fill, and return cksumlens array of checksum lengths.
+**	This array holds just the unique elements from the krb5_cksumarray[].
+**	array[n] == 0 signals end of data.
+**
+**      The krb5_cksumarray[] was an internal variable that has since been
+**      replaced by a more general method for storing the data.  It should
+**      not be used.  Instead we use real API calls and make a guess for 
+**      what the highest assigned CKSUMTYPE_ constant is.  As of 1.2.2
+**      it is 0x000c (CKSUMTYPE_HMAC_SHA1_DES3).  So we will use 0x0010.
+*/
+static size_t  *populate_cksumlens(void)
+	{
+	int 		i, j, n;
+	static size_t 	*cklens = NULL;
+
+#ifdef KRB5_MIT_OLD11
+	n = krb5_max_cksum;
+#else
+	n = 0x0010;
+#endif	/* KRB5_MIT_OLD11 */
+ 
+#ifdef KRB5CHECKAUTH
+	if (!cklens && !(cklens = (size_t *) calloc(sizeof(int),n+1)))  return NULL;
+
+	for (i=0; i < n; i++)  {
+		if (!valid_cksumtype(i))  continue;	/*  array has holes  */
+		for (j=0; j < n; j++)  {
+			if (cklens[j] == 0)  {
+				cklens[j] = krb5_checksum_size(NULL,i);
+				break;		/*  krb5 elem was new: add   */
+				}
+			if (cklens[j] == krb5_checksum_size(NULL,i))  {
+				break;		/*  ignore duplicate elements */
+				}
+			}
+		}
+#endif	/* KRB5CHECKAUTH */
+
+	return cklens;
+	}
+
+/*	Return pointer to start of real authenticator within authenticator, or
+**	return NULL on error.
+**	Decrypted authenticator looks like this:
+**		[0 or 8 byte confounder] [4-24 byte checksum] [real authent'r]
+**	This hackery wouldn't be necessary if MIT KRB5 1.0.6 had the
+**	krb5_auth_con_getcksumtype() function advertised in its krb5.h.
+*/
+unsigned char	*kssl_skip_confound(krb5_enctype etype, unsigned char *a)
+	{
+	int 		i, conlen;
+	size_t		cklen;
+	static size_t 	*cksumlens = NULL;
+	unsigned char	*test_auth;
+
+	conlen = (etype)? 8: 0;
+
+	if (!cksumlens  &&  !(cksumlens = populate_cksumlens()))  return NULL;
+	for (i=0; (cklen = cksumlens[i]) != 0; i++)
+		{
+		test_auth = a + conlen + cklen;
+		if (kssl_test_confound(test_auth))  return test_auth;
+		}
+
+	return NULL;
+	}
+
+
+/*	Set kssl_err error info when reason text is a simple string
+**		kssl_err = struct { int reason; char text[KSSL_ERR_MAX+1]; }
+*/
+void
+kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text)
+        {
+	if (kssl_err == NULL)  return;
+
+	kssl_err->reason = reason;
+	BIO_snprintf(kssl_err->text, KSSL_ERR_MAX, "%s", text);
+	return;
+        }
+
+
+/*	Display contents of krb5_data struct, for debugging
+*/
+void
+print_krb5_data(char *label, krb5_data *kdata)
+        {
+	int i;
+
+	printf("%s[%d] ", label, kdata->length);
+	for (i=0; i < (int)kdata->length; i++)
+                {
+		if (0 &&  isprint((int) kdata->data[i]))
+                        printf(	"%c ",  kdata->data[i]);
+		else
+                        printf(	"%02x ", (unsigned char) kdata->data[i]);
+		}
+	printf("\n");
+        }
+
+
+/*	Display contents of krb5_authdata struct, for debugging
+*/
+void
+print_krb5_authdata(char *label, krb5_authdata **adata)
+        {
+	if (adata == NULL)
+                {
+		printf("%s, authdata==0\n", label);
+		return;
+		}
+	printf("%s [%p]\n", label, (void *)adata);
+#if 0
+	{
+        int 	i;
+	printf("%s[at%d:%d] ", label, adata->ad_type, adata->length);
+	for (i=0; i < adata->length; i++)
+                {
+                printf((isprint(adata->contents[i]))? "%c ": "%02x",
+                        adata->contents[i]);
+		}
+	printf("\n");
+	}
+#endif
+	}
+
+
+/*	Display contents of krb5_keyblock struct, for debugging
+*/
+void
+print_krb5_keyblock(char *label, krb5_keyblock *keyblk)
+        {
+	int i;
+
+	if (keyblk == NULL)
+                {
+		printf("%s, keyblk==0\n", label);
+		return;
+		}
+#ifdef KRB5_HEIMDAL
+	printf("%s\n\t[et%d:%d]: ", label, keyblk->keytype,
+					   keyblk->keyvalue->length);
+	for (i=0; i < (int)keyblk->keyvalue->length; i++)
+                {
+		printf("%02x",(unsigned char *)(keyblk->keyvalue->contents)[i]);
+		}
+	printf("\n");
+#else
+	printf("%s\n\t[et%d:%d]: ", label, keyblk->enctype, keyblk->length);
+	for (i=0; i < (int)keyblk->length; i++)
+                {
+		printf("%02x",keyblk->contents[i]);
+		}
+	printf("\n");
+#endif
+        }
+
+
+/*	Display contents of krb5_principal_data struct, for debugging
+**	(krb5_principal is typedef'd == krb5_principal_data *)
+*/
+static void
+print_krb5_princ(char *label, krb5_principal_data *princ)
+        {
+	int i, ui, uj;
+
+	printf("%s principal Realm: ", label);
+	if (princ == NULL)  return;
+	for (ui=0; ui < (int)princ->realm.length; ui++)  putchar(princ->realm.data[ui]);
+	printf(" (nametype %d) has %d strings:\n", princ->type,princ->length);
+	for (i=0; i < (int)princ->length; i++)
+                {
+		printf("\t%d [%d]: ", i, princ->data[i].length);
+		for (uj=0; uj < (int)princ->data[i].length; uj++)  {
+			putchar(princ->data[i].data[uj]);
+			}
+		printf("\n");
+		}
+	return;
+        }
+
+
+/*	Given krb5 service (typically "kssl") and hostname in kssl_ctx,
+**	Return encrypted Kerberos ticket for service @ hostname.
+**	If authenp is non-NULL, also return encrypted authenticator,
+**	whose data should be freed by caller.
+**	(Originally was: Create Kerberos AP_REQ message for SSL Client.)
+**
+**	19990628	VRS 	Started; Returns Kerberos AP_REQ message.
+**	20010409	VRS 	Modified for RFC2712; Returns enc tkt.
+**	20010606	VRS 	May also return optional authenticator.
+*/
+krb5_error_code
+kssl_cget_tkt(	/* UPDATE */	KSSL_CTX *kssl_ctx,
+                /* OUT    */	krb5_data **enc_ticketp,
+                /* UPDATE */	krb5_data *authenp,
+                /* OUT    */	KSSL_ERR *kssl_err)
+	{
+	krb5_error_code		krb5rc = KRB5KRB_ERR_GENERIC;
+	krb5_context		krb5context = NULL;
+	krb5_auth_context	krb5auth_context = NULL;
+	krb5_ccache 		krb5ccdef = NULL;
+	krb5_creds		krb5creds, *krb5credsp = NULL;
+	krb5_data		krb5_app_req;
+
+	kssl_err_set(kssl_err, 0, "");
+	memset((char *)&krb5creds, 0, sizeof(krb5creds));
+
+	if (!kssl_ctx)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "No kssl_ctx defined.\n");
+		goto err;
+		}
+	else if (!kssl_ctx->service_host)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "kssl_ctx service_host undefined.\n");
+		goto err;
+		}
+
+	if ((krb5rc = krb5_init_context(&krb5context)) != 0)
+                {
+		BIO_snprintf(kssl_err->text,KSSL_ERR_MAX,
+                        "krb5_init_context() fails: %d\n", krb5rc);
+		kssl_err->reason = SSL_R_KRB5_C_INIT;
+		goto err;
+		}
+
+	if ((krb5rc = krb5_sname_to_principal(krb5context,
+                kssl_ctx->service_host,
+                (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
+                KRB5_NT_SRV_HST, &krb5creds.server)) != 0)
+                {
+		BIO_snprintf(kssl_err->text,KSSL_ERR_MAX,
+                        "krb5_sname_to_principal() fails for %s/%s\n",
+                        kssl_ctx->service_host,
+                        (kssl_ctx->service_name)? kssl_ctx->service_name:
+						  KRB5SVC);
+		kssl_err->reason = SSL_R_KRB5_C_INIT;
+		goto err;
+		}
+
+	if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
+                        "krb5_cc_default fails.\n");
+		goto err;
+		}
+
+	if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
+                &krb5creds.client)) != 0)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_C_CC_PRINC,
+                        "krb5_cc_get_principal() fails.\n");
+		goto err;
+		}
+
+	if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
+                &krb5creds, &krb5credsp)) != 0)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_C_GET_CRED,
+                        "krb5_get_credentials() fails.\n");
+		goto err;
+		}
+
+	*enc_ticketp = &krb5credsp->ticket;
+#ifdef KRB5_HEIMDAL
+	kssl_ctx->enctype = krb5credsp->session.keytype;
+#else
+	kssl_ctx->enctype = krb5credsp->keyblock.enctype;
+#endif
+
+	krb5rc = KRB5KRB_ERR_GENERIC;
+	/*	caller should free data of krb5_app_req  */
+	/*  20010406 VRS deleted for real KerberosWrapper
+	**  20010605 VRS reinstated to offer Authenticator to KerberosWrapper
+	*/
+	krb5_app_req.length = 0;
+	if (authenp)
+                {
+		krb5_data	krb5in_data;
+		const unsigned char	*p;
+		long		arlen;
+		KRB5_APREQBODY	*ap_req;
+
+		authenp->length = 0;
+		krb5in_data.data = NULL;
+		krb5in_data.length = 0;
+		if ((krb5rc = krb5_mk_req_extended(krb5context,
+			&krb5auth_context, 0, &krb5in_data, krb5credsp,
+			&krb5_app_req)) != 0)
+			{
+			kssl_err_set(kssl_err, SSL_R_KRB5_C_MK_REQ,
+				"krb5_mk_req_extended() fails.\n");
+			goto err;
+			}
+
+		arlen = krb5_app_req.length;
+		p = (unsigned char *)krb5_app_req.data;
+		ap_req = (KRB5_APREQBODY *) d2i_KRB5_APREQ(NULL, &p, arlen);
+		if (ap_req)
+			{
+			authenp->length = i2d_KRB5_ENCDATA(
+					ap_req->authenticator, NULL);
+			if (authenp->length  && 
+				(authenp->data = malloc(authenp->length)))
+				{
+				unsigned char	*adp = (unsigned char *)authenp->data;
+				authenp->length = i2d_KRB5_ENCDATA(
+						ap_req->authenticator, &adp);
+				}
+			}
+
+		if (ap_req)  KRB5_APREQ_free((KRB5_APREQ *) ap_req);
+		if (krb5_app_req.length)  
+                        kssl_krb5_free_data_contents(krb5context,&krb5_app_req);
+		}
+#ifdef KRB5_HEIMDAL
+	if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->session))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
+                        "kssl_ctx_setkey() fails.\n");
+		}
+#else
+	if (kssl_ctx_setkey(kssl_ctx, &krb5credsp->keyblock))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_C_INIT,
+                        "kssl_ctx_setkey() fails.\n");
+		}
+#endif
+	else	krb5rc = 0;
+
+ err:
+#ifdef KSSL_DEBUG
+	kssl_ctx_show(kssl_ctx);
+#endif	/* KSSL_DEBUG */
+
+	if (krb5creds.client)	krb5_free_principal(krb5context,
+							krb5creds.client);
+	if (krb5creds.server)	krb5_free_principal(krb5context,
+							krb5creds.server);
+	if (krb5auth_context)	krb5_auth_con_free(krb5context,
+							krb5auth_context);
+	if (krb5context)	krb5_free_context(krb5context);
+	return (krb5rc);
+	}
+
+
+/*  Given d2i_-decoded asn1ticket, allocate and return a new krb5_ticket.
+**  Return Kerberos error code and kssl_err struct on error.
+**  Allocates krb5_ticket and krb5_principal; caller should free these.
+**
+**	20010410	VRS	Implemented krb5_decode_ticket() as
+**				old_krb5_decode_ticket(). Missing from MIT1.0.6.
+**	20010615	VRS 	Re-cast as openssl/asn1 d2i_*() functions.
+**				Re-used some of the old krb5_decode_ticket()
+**				code here.  This tkt should alloc/free just
+**				like the real thing.
+*/
+static krb5_error_code
+kssl_TKT2tkt(	/* IN     */	krb5_context	krb5context,
+		/* IN     */	KRB5_TKTBODY	*asn1ticket,
+		/* OUT    */	krb5_ticket	**krb5ticket,
+		/* OUT    */	KSSL_ERR *kssl_err  )
+        {
+        krb5_error_code			krb5rc = KRB5KRB_ERR_GENERIC;
+	krb5_ticket 			*new5ticket = NULL;
+	ASN1_GENERALSTRING		*gstr_svc, *gstr_host;
+
+	*krb5ticket = NULL;
+
+	if (asn1ticket == NULL  ||  asn1ticket->realm == NULL  ||
+		asn1ticket->sname == NULL  || 
+		sk_ASN1_GENERALSTRING_num(asn1ticket->sname->namestring) < 2)
+		{
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"Null field in asn1ticket.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		return KRB5KRB_ERR_GENERIC;
+		}
+
+	if ((new5ticket = (krb5_ticket *) calloc(1, sizeof(krb5_ticket)))==NULL)
+		{
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"Unable to allocate new krb5_ticket.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		return ENOMEM;		/*  or  KRB5KRB_ERR_GENERIC;	*/
+		}
+
+	gstr_svc  = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 0);
+	gstr_host = sk_ASN1_GENERALSTRING_value(asn1ticket->sname->namestring, 1);
+
+	if ((krb5rc = kssl_build_principal_2(krb5context,
+			&new5ticket->server,
+			asn1ticket->realm->length, (char *)asn1ticket->realm->data,
+			gstr_svc->length,  (char *)gstr_svc->data,
+			gstr_host->length, (char *)gstr_host->data)) != 0)
+		{
+		free(new5ticket);
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"Error building ticket server principal.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		return krb5rc;		/*  or  KRB5KRB_ERR_GENERIC;	*/
+		}
+
+	krb5_princ_type(krb5context, new5ticket->server) =
+			asn1ticket->sname->nametype->data[0];
+	new5ticket->enc_part.enctype = asn1ticket->encdata->etype->data[0];
+	new5ticket->enc_part.kvno = asn1ticket->encdata->kvno->data[0];
+	new5ticket->enc_part.ciphertext.length =
+			asn1ticket->encdata->cipher->length;
+	if ((new5ticket->enc_part.ciphertext.data =
+		calloc(1, asn1ticket->encdata->cipher->length)) == NULL)
+		{
+		free(new5ticket);
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"Error allocating cipher in krb5ticket.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		return KRB5KRB_ERR_GENERIC;
+		}
+	else
+		{
+		memcpy(new5ticket->enc_part.ciphertext.data,
+			asn1ticket->encdata->cipher->data,
+			asn1ticket->encdata->cipher->length);
+		}
+
+	*krb5ticket = new5ticket;
+	return 0;
+	}
+
+
+/*	Given krb5 service name in KSSL_CTX *kssl_ctx (typically "kssl"),
+**		and krb5 AP_REQ message & message length,
+**	Return Kerberos session key and client principle
+**		to SSL Server in KSSL_CTX *kssl_ctx.
+**
+**	19990702	VRS 	Started.
+*/
+krb5_error_code
+kssl_sget_tkt(	/* UPDATE */	KSSL_CTX		*kssl_ctx,
+		/* IN     */	krb5_data		*indata,
+		/* OUT    */	krb5_ticket_times	*ttimes,
+		/* OUT    */	KSSL_ERR		*kssl_err  )
+        {
+        krb5_error_code			krb5rc = KRB5KRB_ERR_GENERIC;
+        static krb5_context		krb5context = NULL;
+	static krb5_auth_context	krb5auth_context = NULL;
+	krb5_ticket 			*krb5ticket = NULL;
+	KRB5_TKTBODY 			*asn1ticket = NULL;
+	const unsigned char		*p;
+	krb5_keytab 			krb5keytab = NULL;
+	krb5_keytab_entry		kt_entry;
+	krb5_principal			krb5server;
+        krb5_rcache                     rcache = NULL;
+
+	kssl_err_set(kssl_err, 0, "");
+
+	if (!kssl_ctx)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+			"No kssl_ctx defined.\n");
+		goto err;
+		}
+
+#ifdef KSSL_DEBUG
+	printf("in kssl_sget_tkt(%s)\n", kstring(kssl_ctx->service_name));
+#endif	/* KSSL_DEBUG */
+
+	if (!krb5context  &&  (krb5rc = krb5_init_context(&krb5context)))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "krb5_init_context() fails.\n");
+		goto err;
+		}
+	if (krb5auth_context  &&
+		(krb5rc = krb5_auth_con_free(krb5context, krb5auth_context)))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "krb5_auth_con_free() fails.\n");
+		goto err;
+		}
+	else  krb5auth_context = NULL;
+	if (!krb5auth_context  &&
+		(krb5rc = krb5_auth_con_init(krb5context, &krb5auth_context)))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "krb5_auth_con_init() fails.\n");
+		goto err;
+		}
+
+ 
+	if ((krb5rc = krb5_auth_con_getrcache(krb5context, krb5auth_context,
+		&rcache)))
+		{
+ 		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+			"krb5_auth_con_getrcache() fails.\n");
+ 		goto err;
+		}
+ 
+	if ((krb5rc = krb5_sname_to_principal(krb5context, NULL,
+                (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
+                KRB5_NT_SRV_HST, &krb5server)) != 0)
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "krb5_sname_to_principal() fails.\n");
+		goto err;
+		}
+
+	if (rcache == NULL) 
+                {
+                if ((krb5rc = krb5_get_server_rcache(krb5context,
+			krb5_princ_component(krb5context, krb5server, 0),
+			&rcache)))
+                        {
+		        kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                                "krb5_get_server_rcache() fails.\n");
+                  	goto err;
+                        }
+                }
+
+        if ((krb5rc = krb5_auth_con_setrcache(krb5context, krb5auth_context, rcache)))
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+			"krb5_auth_con_setrcache() fails.\n");
+                goto err;
+                }
+
+
+	/*	kssl_ctx->keytab_file == NULL ==> use Kerberos default
+	*/
+	if (kssl_ctx->keytab_file)
+		{
+		krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
+                        &krb5keytab);
+		if (krb5rc)
+			{
+			kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+				"krb5_kt_resolve() fails.\n");
+			goto err;
+			}
+		}
+	else
+		{
+                krb5rc = krb5_kt_default(krb5context,&krb5keytab);
+                if (krb5rc)
+			{
+			kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT, 
+				"krb5_kt_default() fails.\n");
+			goto err;
+			}
+		}
+
+	/*	Actual Kerberos5 krb5_recvauth() has initial conversation here
+	**	o	check KRB5_SENDAUTH_BADAUTHVERS
+	**		unless KRB5_RECVAUTH_SKIP_VERSION
+	**	o	check KRB5_SENDAUTH_BADAPPLVERS
+	**	o	send "0" msg if all OK
+	*/
+
+	/*  20010411 was using AP_REQ instead of true KerberosWrapper
+	**
+	**  if ((krb5rc = krb5_rd_req(krb5context, &krb5auth_context,
+	**			&krb5in_data, krb5server, krb5keytab,
+	**			&ap_option, &krb5ticket)) != 0)  { Error }
+	*/
+
+	p = (unsigned char *)indata->data;
+	if ((asn1ticket = (KRB5_TKTBODY *) d2i_KRB5_TICKET(NULL, &p,
+						(long) indata->length)) == NULL)
+		{
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"d2i_KRB5_TICKET() ASN.1 decode failure.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		goto err;
+		}
+	
+	/* Was:  krb5rc = krb5_decode_ticket(krb5in_data,&krb5ticket)) != 0) */
+	if ((krb5rc = kssl_TKT2tkt(krb5context, asn1ticket, &krb5ticket,
+					kssl_err)) != 0)
+		{
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"Error converting ASN.1 ticket to krb5_ticket.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		goto err;
+		}
+
+	if (! krb5_principal_compare(krb5context, krb5server,
+						  krb5ticket->server))  {
+		krb5rc = KRB5_PRINC_NOMATCH;
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"server principal != ticket principal\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		goto err;
+		}
+	if ((krb5rc = krb5_kt_get_entry(krb5context, krb5keytab,
+			krb5ticket->server, krb5ticket->enc_part.kvno,
+			krb5ticket->enc_part.enctype, &kt_entry)) != 0)  {
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"krb5_kt_get_entry() fails with %x.\n", krb5rc);
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		goto err;
+		}
+	if ((krb5rc = krb5_decrypt_tkt_part(krb5context, &kt_entry.key,
+			krb5ticket)) != 0)  {
+		BIO_snprintf(kssl_err->text, KSSL_ERR_MAX,
+			"krb5_decrypt_tkt_part() failed.\n");
+		kssl_err->reason = SSL_R_KRB5_S_RD_REQ;
+		goto err;
+		}
+	else  {
+		krb5_kt_free_entry(krb5context, &kt_entry);
+#ifdef KSSL_DEBUG
+		{
+		int i; krb5_address **paddr = krb5ticket->enc_part2->caddrs;
+		printf("Decrypted ticket fields:\n");
+		printf("\tflags: %X, transit-type: %X",
+			krb5ticket->enc_part2->flags,
+			krb5ticket->enc_part2->transited.tr_type);
+		print_krb5_data("\ttransit-data: ",
+			&(krb5ticket->enc_part2->transited.tr_contents));
+		printf("\tcaddrs: %p, authdata: %p\n",
+			krb5ticket->enc_part2->caddrs,
+			krb5ticket->enc_part2->authorization_data);
+		if (paddr)
+			{
+			printf("\tcaddrs:\n");
+			for (i=0; paddr[i] != NULL; i++)
+				{
+				krb5_data d;
+				d.length=paddr[i]->length;
+				d.data=paddr[i]->contents;
+				print_krb5_data("\t\tIP: ", &d);
+				}
+			}
+		printf("\tstart/auth/end times: %d / %d / %d\n",
+			krb5ticket->enc_part2->times.starttime,
+			krb5ticket->enc_part2->times.authtime,
+			krb5ticket->enc_part2->times.endtime);
+		}
+#endif	/* KSSL_DEBUG */
+		}
+
+	krb5rc = KRB5_NO_TKT_SUPPLIED;
+	if (!krb5ticket  ||	!krb5ticket->enc_part2  ||
+                !krb5ticket->enc_part2->client  ||
+                !krb5ticket->enc_part2->client->data  ||
+                !krb5ticket->enc_part2->session)
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+                        "bad ticket from krb5_rd_req.\n");
+		}
+	else if (kssl_ctx_setprinc(kssl_ctx, KSSL_CLIENT,
+		 &krb5ticket->enc_part2->client->realm,
+		 krb5ticket->enc_part2->client->data,
+		 krb5ticket->enc_part2->client->length))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+                        "kssl_ctx_setprinc() fails.\n");
+		}
+	else if (kssl_ctx_setkey(kssl_ctx, krb5ticket->enc_part2->session))
+                {
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+                        "kssl_ctx_setkey() fails.\n");
+		}
+	else if (krb5ticket->enc_part2->flags & TKT_FLG_INVALID)
+                {
+		krb5rc = KRB5KRB_AP_ERR_TKT_INVALID;
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_BAD_TICKET,
+                        "invalid ticket from krb5_rd_req.\n");
+		}
+	else	krb5rc = 0;
+
+	kssl_ctx->enctype	= krb5ticket->enc_part.enctype;
+	ttimes->authtime	= krb5ticket->enc_part2->times.authtime;
+	ttimes->starttime	= krb5ticket->enc_part2->times.starttime;
+	ttimes->endtime 	= krb5ticket->enc_part2->times.endtime;
+	ttimes->renew_till	= krb5ticket->enc_part2->times.renew_till;
+
+ err:
+#ifdef KSSL_DEBUG
+	kssl_ctx_show(kssl_ctx);
+#endif	/* KSSL_DEBUG */
+
+	if (asn1ticket) 	KRB5_TICKET_free((KRB5_TICKET *) asn1ticket);
+        if (krb5keytab)         krb5_kt_close(krb5context, krb5keytab);
+	if (krb5ticket) 	krb5_free_ticket(krb5context, krb5ticket);
+	if (krb5server) 	krb5_free_principal(krb5context, krb5server);
+	return (krb5rc);
+        }
+
+
+/*	Allocate & return a new kssl_ctx struct.
+*/
+KSSL_CTX	*
+kssl_ctx_new(void)
+        {
+	return ((KSSL_CTX *) kssl_calloc(1, sizeof(KSSL_CTX)));
+        }
+
+
+/*	Frees a kssl_ctx struct and any allocated memory it holds.
+**	Returns NULL.
+*/
+KSSL_CTX	*
+kssl_ctx_free(KSSL_CTX *kssl_ctx)
+        {
+	if (kssl_ctx == NULL)  return kssl_ctx;
+
+	if (kssl_ctx->key)  		OPENSSL_cleanse(kssl_ctx->key,
+							      kssl_ctx->length);
+	if (kssl_ctx->key)  		kssl_free(kssl_ctx->key);
+	if (kssl_ctx->client_princ) 	kssl_free(kssl_ctx->client_princ);
+	if (kssl_ctx->service_host) 	kssl_free(kssl_ctx->service_host);
+	if (kssl_ctx->service_name) 	kssl_free(kssl_ctx->service_name);
+	if (kssl_ctx->keytab_file) 	kssl_free(kssl_ctx->keytab_file);
+
+	kssl_free(kssl_ctx);
+	return (KSSL_CTX *) NULL;
+        }
+
+
+/*	Given an array of (krb5_data *) entity (and optional realm),
+**	set the plain (char *) client_princ or service_host member
+**	of the kssl_ctx struct.
+*/
+krb5_error_code
+kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
+        krb5_data *realm, krb5_data *entity, int nentities)
+        {
+	char	**princ;
+	int 	length;
+	int i;
+
+	if (kssl_ctx == NULL  ||  entity == NULL)  return KSSL_CTX_ERR;
+
+	switch (which)
+                {
+        case KSSL_CLIENT:	princ = &kssl_ctx->client_princ;	break;
+        case KSSL_SERVER:	princ = &kssl_ctx->service_host;	break;
+        default:		return KSSL_CTX_ERR;			break;
+		}
+	if (*princ)  kssl_free(*princ);
+
+	/* Add up all the entity->lengths */
+	length = 0;
+	for (i=0; i < nentities; i++)
+		{
+		length += entity[i].length;
+		}
+	/* Add in space for the '/' character(s) (if any) */
+	length += nentities-1;
+	/* Space for the ('@'+realm+NULL | NULL) */
+	length += ((realm)? realm->length + 2: 1);
+
+	if ((*princ = kssl_calloc(1, length)) == NULL)
+		return KSSL_CTX_ERR;
+	else
+		{
+		for (i = 0; i < nentities; i++)
+			{
+			strncat(*princ, entity[i].data, entity[i].length);
+			if (i < nentities-1)
+				{
+				strcat (*princ, "/");
+				}
+			}
+		if (realm)
+                        {
+			strcat (*princ, "@");
+			(void) strncat(*princ, realm->data, realm->length);
+			}
+		}
+
+	return KSSL_CTX_OK;
+        }
+
+
+/*	Set one of the plain (char *) string members of the kssl_ctx struct.
+**	Default values should be:
+**		which == KSSL_SERVICE	=>	"khost" (KRB5SVC)
+**		which == KSSL_KEYTAB	=>	"/etc/krb5.keytab" (KRB5KEYTAB)
+*/
+krb5_error_code
+kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text)
+        {
+	char	**string;
+
+	if (!kssl_ctx)  return KSSL_CTX_ERR;
+
+	switch (which)
+                {
+        case KSSL_SERVICE:	string = &kssl_ctx->service_name;	break;
+        case KSSL_SERVER:	string = &kssl_ctx->service_host;	break;
+        case KSSL_CLIENT:	string = &kssl_ctx->client_princ;	break;
+        case KSSL_KEYTAB:	string = &kssl_ctx->keytab_file;	break;
+        default:		return KSSL_CTX_ERR;			break;
+		}
+	if (*string)  kssl_free(*string);
+
+	if (!text)
+                {
+		*string = '\0';
+		return KSSL_CTX_OK;
+		}
+
+	if ((*string = kssl_calloc(1, strlen(text) + 1)) == NULL)
+		return KSSL_CTX_ERR;
+	else
+		strcpy(*string, text);
+
+	return KSSL_CTX_OK;
+        }
+
+
+/*	Copy the Kerberos session key from a (krb5_keyblock *) to a kssl_ctx
+**	struct.  Clear kssl_ctx->key if Kerberos session key is NULL.
+*/
+krb5_error_code
+kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session)
+        {
+	int 		length;
+	krb5_enctype	enctype;
+	krb5_octet FAR	*contents = NULL;
+
+	if (!kssl_ctx)  return KSSL_CTX_ERR;
+
+	if (kssl_ctx->key)
+                {
+		OPENSSL_cleanse(kssl_ctx->key, kssl_ctx->length);
+		kssl_free(kssl_ctx->key);
+		}
+
+	if (session)
+                {
+
+#ifdef KRB5_HEIMDAL
+		length = session->keyvalue->length;
+		enctype = session->keytype;
+		contents = session->keyvalue->contents;
+#else
+		length = session->length;
+		enctype = session->enctype;
+		contents = session->contents;
+#endif
+		kssl_ctx->enctype = enctype;
+		kssl_ctx->length  = length;
+		}
+	else
+                {
+		kssl_ctx->enctype = ENCTYPE_UNKNOWN;
+		kssl_ctx->length  = 0;
+		return KSSL_CTX_OK;
+		}
+
+	if ((kssl_ctx->key =
+                (krb5_octet FAR *) kssl_calloc(1, kssl_ctx->length)) == NULL)
+                {
+		kssl_ctx->length  = 0;
+		return KSSL_CTX_ERR;
+		}
+	else
+		memcpy(kssl_ctx->key, contents, length);
+
+	return KSSL_CTX_OK;
+        }
+
+
+/*	Display contents of kssl_ctx struct
+*/
+void
+kssl_ctx_show(KSSL_CTX *kssl_ctx)
+        {
+	int 	i;
+
+	printf("kssl_ctx: ");
+	if (kssl_ctx == NULL)
+                {
+		printf("NULL\n");
+		return;
+		}
+	else
+		printf("%p\n", (void *)kssl_ctx);
+
+	printf("\tservice:\t%s\n",
+                (kssl_ctx->service_name)? kssl_ctx->service_name: "NULL");
+	printf("\tclient:\t%s\n",
+                (kssl_ctx->client_princ)? kssl_ctx->client_princ: "NULL");
+	printf("\tserver:\t%s\n",
+                (kssl_ctx->service_host)? kssl_ctx->service_host: "NULL");
+	printf("\tkeytab:\t%s\n",
+                (kssl_ctx->keytab_file)? kssl_ctx->keytab_file: "NULL");
+	printf("\tkey [%d:%d]:\t",
+                kssl_ctx->enctype, kssl_ctx->length);
+
+	for (i=0; i < kssl_ctx->length  &&  kssl_ctx->key; i++)
+                {
+		printf("%02x", kssl_ctx->key[i]);
+		}
+	printf("\n");
+	return;
+        }
+
+    int 
+    kssl_keytab_is_available(KSSL_CTX *kssl_ctx)
+{
+    krb5_context		krb5context = NULL;
+    krb5_keytab 		krb5keytab = NULL;
+    krb5_keytab_entry           entry;
+    krb5_principal              princ = NULL;
+    krb5_error_code  		krb5rc = KRB5KRB_ERR_GENERIC;
+    int rc = 0;
+
+    if ((krb5rc = krb5_init_context(&krb5context)))
+        return(0);
+
+    /*	kssl_ctx->keytab_file == NULL ==> use Kerberos default
+    */
+    if (kssl_ctx->keytab_file)
+    {
+        krb5rc = krb5_kt_resolve(krb5context, kssl_ctx->keytab_file,
+                                  &krb5keytab);
+        if (krb5rc)
+            goto exit;
+    }
+    else
+    {
+        krb5rc = krb5_kt_default(krb5context,&krb5keytab);
+        if (krb5rc)
+            goto exit;
+    }
+
+    /* the host key we are looking for */
+    krb5rc = krb5_sname_to_principal(krb5context, NULL, 
+                                     kssl_ctx->service_name ? kssl_ctx->service_name: KRB5SVC,
+                                     KRB5_NT_SRV_HST, &princ);
+
+    if (krb5rc)
+	goto exit;
+
+    krb5rc = krb5_kt_get_entry(krb5context, krb5keytab, 
+                                princ,
+                                0 /* IGNORE_VNO */,
+                                0 /* IGNORE_ENCTYPE */,
+                                &entry);
+    if ( krb5rc == KRB5_KT_NOTFOUND ) {
+        rc = 1;
+        goto exit;
+    } else if ( krb5rc )
+        goto exit;
+    
+    krb5_kt_free_entry(krb5context, &entry);
+    rc = 1;
+
+  exit:
+    if (krb5keytab)     krb5_kt_close(krb5context, krb5keytab);
+    if (princ)          krb5_free_principal(krb5context, princ);
+    if (krb5context)	krb5_free_context(krb5context);
+    return(rc);
+}
+
+int 
+kssl_tgt_is_available(KSSL_CTX *kssl_ctx)
+        {
+        krb5_error_code		krb5rc = KRB5KRB_ERR_GENERIC;
+        krb5_context		krb5context = NULL;
+        krb5_ccache 		krb5ccdef = NULL;
+        krb5_creds		krb5creds, *krb5credsp = NULL;
+        int                     rc = 0;
+
+        memset((char *)&krb5creds, 0, sizeof(krb5creds));
+
+        if (!kssl_ctx)
+            return(0);
+
+        if (!kssl_ctx->service_host)
+            return(0);
+
+        if ((krb5rc = krb5_init_context(&krb5context)) != 0)
+            goto err;
+
+        if ((krb5rc = krb5_sname_to_principal(krb5context,
+                                              kssl_ctx->service_host,
+                                              (kssl_ctx->service_name)? kssl_ctx->service_name: KRB5SVC,
+                                              KRB5_NT_SRV_HST, &krb5creds.server)) != 0)
+            goto err;
+
+        if ((krb5rc = krb5_cc_default(krb5context, &krb5ccdef)) != 0)
+            goto err;
+
+        if ((krb5rc = krb5_cc_get_principal(krb5context, krb5ccdef,
+                                             &krb5creds.client)) != 0)
+            goto err;
+
+        if ((krb5rc = krb5_get_credentials(krb5context, 0, krb5ccdef,
+                                            &krb5creds, &krb5credsp)) != 0)
+            goto err;
+
+        rc = 1;
+
+      err:
+#ifdef KSSL_DEBUG
+	kssl_ctx_show(kssl_ctx);
+#endif	/* KSSL_DEBUG */
+
+	if (krb5creds.client)	krb5_free_principal(krb5context, krb5creds.client);
+	if (krb5creds.server)	krb5_free_principal(krb5context, krb5creds.server);
+	if (krb5context)	krb5_free_context(krb5context);
+        return(rc);
+	}
+
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_WIN32)
+void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data)
+	{
+#ifdef KRB5_HEIMDAL
+	data->length = 0;
+        if (data->data)
+            free(data->data);
+#elif defined(KRB5_MIT_OLD11)
+	if (data->data)  {
+		krb5_xfree(data->data);
+		data->data = 0;
+		}
+#else
+	krb5_free_data_contents(NULL, data);
+#endif
+	}
+#endif /* !OPENSSL_SYS_WINDOWS && !OPENSSL_SYS_WIN32 */
+
+
+/*  Given pointers to KerberosTime and struct tm structs, convert the
+**  KerberosTime string to struct tm.  Note that KerberosTime is a
+**  ASN1_GENERALIZEDTIME value, constrained to GMT with no fractional
+**  seconds as defined in RFC 1510.
+**  Return pointer to the (partially) filled in struct tm on success,
+**  return NULL on failure.
+*/
+static struct tm *k_gmtime(ASN1_GENERALIZEDTIME *gtime, struct tm *k_tm)
+	{
+	char 		c, *p;
+
+	if (!k_tm)  return NULL;
+	if (gtime == NULL  ||  gtime->length < 14)  return NULL;
+	if (gtime->data == NULL)  return NULL;
+
+	p = (char *)&gtime->data[14];
+
+	c = *p;	 *p = '\0';  p -= 2;  k_tm->tm_sec  = atoi(p);      *(p+2) = c;
+	c = *p;	 *p = '\0';  p -= 2;  k_tm->tm_min  = atoi(p);      *(p+2) = c;
+	c = *p;	 *p = '\0';  p -= 2;  k_tm->tm_hour = atoi(p);      *(p+2) = c;
+	c = *p;	 *p = '\0';  p -= 2;  k_tm->tm_mday = atoi(p);      *(p+2) = c;
+	c = *p;	 *p = '\0';  p -= 2;  k_tm->tm_mon  = atoi(p)-1;    *(p+2) = c;
+	c = *p;	 *p = '\0';  p -= 4;  k_tm->tm_year = atoi(p)-1900; *(p+4) = c;
+
+	return k_tm;
+	}
+
+
+/*  Helper function for kssl_validate_times().
+**  We need context->clockskew, but krb5_context is an opaque struct.
+**  So we try to sneek the clockskew out through the replay cache.
+**	If that fails just return a likely default (300 seconds).
+*/
+static krb5_deltat get_rc_clockskew(krb5_context context)
+	{
+	krb5_rcache 	rc;
+	krb5_deltat 	clockskew;
+
+	if (krb5_rc_default(context, &rc))  return KSSL_CLOCKSKEW;
+	if (krb5_rc_initialize(context, rc, 0))  return KSSL_CLOCKSKEW;
+	if (krb5_rc_get_lifespan(context, rc, &clockskew))  {
+		clockskew = KSSL_CLOCKSKEW;
+		}
+	(void) krb5_rc_destroy(context, rc);
+	return clockskew;
+	}
+
+
+/*  kssl_validate_times() combines (and more importantly exposes)
+**  the MIT KRB5 internal function krb5_validate_times() and the
+**  in_clock_skew() macro.  The authenticator client time is checked
+**  to be within clockskew secs of the current time and the current
+**  time is checked to be within the ticket start and expire times.
+**  Either check may be omitted by supplying a NULL value.
+**  Returns 0 for valid times, SSL_R_KRB5* error codes otherwise.
+**  See Also: (Kerberos source)/krb5/lib/krb5/krb/valid_times.c
+**  20010420 VRS
+*/
+krb5_error_code  kssl_validate_times(	krb5_timestamp atime,
+					krb5_ticket_times *ttimes)
+	{
+	krb5_deltat 	skew;
+	krb5_timestamp	start, now;
+	krb5_error_code	rc;
+	krb5_context	context;
+
+	if ((rc = krb5_init_context(&context)))	 return SSL_R_KRB5_S_BAD_TICKET;
+	skew = get_rc_clockskew(context); 
+	if ((rc = krb5_timeofday(context,&now))) return SSL_R_KRB5_S_BAD_TICKET;
+	krb5_free_context(context);
+
+	if (atime  &&  labs(atime - now) >= skew)  return SSL_R_KRB5_S_TKT_SKEW;
+
+	if (! ttimes)  return 0;
+
+	start = (ttimes->starttime != 0)? ttimes->starttime: ttimes->authtime;
+	if (start - now > skew)  return SSL_R_KRB5_S_TKT_NYV;
+	if ((now - ttimes->endtime) > skew)  return SSL_R_KRB5_S_TKT_EXPIRED;
+
+#ifdef KSSL_DEBUG
+	printf("kssl_validate_times: %d |<-  | %d - %d | < %d  ->| %d\n",
+		start, atime, now, skew, ttimes->endtime);
+#endif	/* KSSL_DEBUG */
+
+	return 0;
+	}
+
+
+/*  Decode and decrypt given DER-encoded authenticator, then pass
+**  authenticator ctime back in *atimep (or 0 if time unavailable).
+**  Returns krb5_error_code and kssl_err on error.  A NULL 
+**  authenticator (authentp->length == 0) is not considered an error.
+**  Note that kssl_check_authent() makes use of the KRB5 session key;
+**  you must call kssl_sget_tkt() to get the key before calling this routine.
+*/
+krb5_error_code  kssl_check_authent(
+			/* IN     */	KSSL_CTX	*kssl_ctx,
+                        /* IN     */   	krb5_data	*authentp,
+			/* OUT    */	krb5_timestamp	*atimep,
+			/* OUT    */    KSSL_ERR	*kssl_err  )
+	{
+        krb5_error_code		krb5rc = 0;
+	KRB5_ENCDATA		*dec_authent = NULL;
+	KRB5_AUTHENTBODY	*auth = NULL;
+	krb5_enctype		enctype;
+	EVP_CIPHER_CTX		ciph_ctx;
+	const EVP_CIPHER	*enc = NULL;
+	unsigned char		iv[EVP_MAX_IV_LENGTH];
+	const unsigned char	*p;
+	unsigned char		*unenc_authent;
+	int 			outl, unencbufsize;
+	struct tm		tm_time, *tm_l, *tm_g;
+	time_t			now, tl, tg, tr, tz_offset;
+
+	EVP_CIPHER_CTX_init(&ciph_ctx);
+	*atimep = 0;
+	kssl_err_set(kssl_err, 0, "");
+
+#ifndef KRB5CHECKAUTH
+	authentp = NULL;
+#else
+#if	KRB5CHECKAUTH == 0
+	authentp = NULL;
+#endif
+#endif	/* KRB5CHECKAUTH */
+
+	if (authentp == NULL  ||  authentp->length == 0)  return 0;
+
+#ifdef KSSL_DEBUG
+        {
+        unsigned int ui;
+	printf("kssl_check_authent: authenticator[%d]:\n",authentp->length);
+	p = authentp->data; 
+	for (ui=0; ui < authentp->length; ui++)  printf("%02x ",p[ui]);
+	printf("\n");
+        }
+#endif	/* KSSL_DEBUG */
+
+	unencbufsize = 2 * authentp->length;
+	if ((unenc_authent = calloc(1, unencbufsize)) == NULL)
+		{
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+			"Unable to allocate authenticator buffer.\n");
+		krb5rc = KRB5KRB_ERR_GENERIC;
+		goto err;
+		}
+
+	p = (unsigned char *)authentp->data;
+	if ((dec_authent = d2i_KRB5_ENCDATA(NULL, &p,
+					(long) authentp->length)) == NULL) 
+		{
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "Error decoding authenticator.\n");
+		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+		goto err;
+		}
+
+	enctype = dec_authent->etype->data[0];	/* should = kssl_ctx->enctype */
+#if !defined(KRB5_MIT_OLD11)
+            switch ( enctype ) {
+            case ENCTYPE_DES3_CBC_SHA1:		/*    EVP_des_ede3_cbc();  */
+            case ENCTYPE_DES3_CBC_SHA:
+            case ENCTYPE_DES3_CBC_RAW:
+                krb5rc = 0;                     /* Skip, can't handle derived keys */
+                goto err;
+            }
+#endif
+	enc = kssl_map_enc(enctype);
+	memset(iv, 0, sizeof iv);       /* per RFC 1510 */
+
+	if (enc == NULL)
+		{
+		/*  Disable kssl_check_authent for ENCTYPE_DES3_CBC_SHA1.
+		**  This enctype indicates the authenticator was encrypted
+		**  using key-usage derived keys which openssl cannot decrypt.
+		*/
+		goto err;
+		}
+
+        if (!EVP_CipherInit(&ciph_ctx,enc,kssl_ctx->key,iv,0))
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "EVP_CipherInit error decrypting authenticator.\n");
+                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+                goto err;
+                }
+        outl = dec_authent->cipher->length;
+        if (!EVP_Cipher(&ciph_ctx,unenc_authent,dec_authent->cipher->data,outl))
+                {
+                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "EVP_Cipher error decrypting authenticator.\n");
+                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+                goto err;
+                }
+        EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+
+#ifdef KSSL_DEBUG
+	{
+	int padl;
+	printf("kssl_check_authent: decrypted authenticator[%d] =\n", outl);
+	for (padl=0; padl < outl; padl++) printf("%02x ",unenc_authent[padl]);
+	printf("\n");
+	}
+#endif	/* KSSL_DEBUG */
+
+	if ((p = kssl_skip_confound(enctype, unenc_authent)) == NULL)
+		{
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "confounded by authenticator.\n");
+		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+		goto err;
+		}
+	outl -= p - unenc_authent;
+
+	if ((auth = (KRB5_AUTHENTBODY *) d2i_KRB5_AUTHENT(NULL, &p,
+							  (long) outl))==NULL)
+		{
+		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,
+                        "Error decoding authenticator body.\n");
+		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+		goto err;
+		}
+
+	memset(&tm_time,0,sizeof(struct tm));
+	if (k_gmtime(auth->ctime, &tm_time)  &&
+		((tr = mktime(&tm_time)) != (time_t)(-1)))
+ 		{
+ 		now  = time(&now);
+ 		tm_l = localtime(&now); 	tl = mktime(tm_l);
+ 		tm_g = gmtime(&now);		tg = mktime(tm_g);
+ 		tz_offset = tg - tl;
+
+		*atimep = (krb5_timestamp)(tr - tz_offset);
+ 		}
+
+#ifdef KSSL_DEBUG
+	printf("kssl_check_authent: returns %d for client time ", *atimep);
+	if (auth && auth->ctime && auth->ctime->length && auth->ctime->data)
+		printf("%.*s\n", auth->ctime->length, auth->ctime->data);
+	else	printf("NULL\n");
+#endif	/* KSSL_DEBUG */
+
+ err:
+	if (auth)		KRB5_AUTHENT_free((KRB5_AUTHENT *) auth);
+	if (dec_authent)	KRB5_ENCDATA_free(dec_authent);
+	if (unenc_authent)	free(unenc_authent);
+	EVP_CIPHER_CTX_cleanup(&ciph_ctx);
+	return krb5rc;
+	}
+
+
+/*  Replaces krb5_build_principal_ext(), with varargs length == 2 (svc, host),
+**  because I dont't know how to stub varargs.
+**  Returns krb5_error_code == ENOMEM on alloc error, otherwise
+**  passes back newly constructed principal, which should be freed by caller.
+*/
+krb5_error_code  kssl_build_principal_2(
+			/* UPDATE */	krb5_context	context,
+			/* OUT    */	krb5_principal	*princ,
+			/* IN     */	int rlen,  const char *realm,
+			/* IN	  */	int slen,  const char *svc,
+			/* IN	  */	int hlen,  const char *host)
+	{
+	krb5_data		*p_data = NULL;
+	krb5_principal		new_p = NULL;
+        char			*new_r = NULL;
+
+	if ((p_data = (krb5_data *) calloc(2, sizeof(krb5_data))) == NULL  ||
+	    (new_p = (krb5_principal) calloc(1, sizeof(krb5_principal_data)))
+			== NULL)  goto err;
+	new_p->length = 2;
+	new_p->data = p_data;
+
+	if ((new_r = calloc(1, rlen + 1)) == NULL)  goto err;
+	memcpy(new_r, realm, rlen);
+	krb5_princ_set_realm_length(context, new_p, rlen);
+	krb5_princ_set_realm_data(context, new_p, new_r);
+
+	if ((new_p->data[0].data = calloc(1, slen + 1)) == NULL)  goto err;
+	memcpy(new_p->data[0].data, svc, slen);
+	new_p->data[0].length = slen;
+
+	if ((new_p->data[1].data = calloc(1, hlen + 1)) == NULL)  goto err;
+	memcpy(new_p->data[1].data, host, hlen);
+	new_p->data[1].length = hlen;
+	
+	krb5_princ_type(context, new_p) = KRB5_NT_UNKNOWN;
+	*princ = new_p;
+	return 0;
+
+ err:
+	if (new_p  &&  new_p[0].data)	free(new_p[0].data);
+	if (new_p  &&  new_p[1].data)	free(new_p[1].data);
+	if (new_p)	free(new_p);
+	if (new_r)	free(new_r);
+	return ENOMEM;
+	}
+
+void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx)
+	{
+	s->kssl_ctx = kctx;
+	} 
+
+KSSL_CTX * SSL_get0_kssl_ctx(SSL *s)
+	{
+	return s->kssl_ctx;
+	}
+
+char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx)
+	{
+	if (kctx)
+		return kctx->client_princ;
+	return NULL;
+	}
+
+#else /* !OPENSSL_NO_KRB5 */
+
+#if defined(PEDANTIC) || defined(OPENSSL_SYS_VMS)
+static void *dummy=&dummy;
+#endif
+
+#endif	/* !OPENSSL_NO_KRB5	*/
+