+++ /dev/null
-/* 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 *)>ime->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 */
-
projects / cassiopeia.git / blobdiff