Make krb5 wrapper library common so they can be used all over

2 files changed, 2 insertions, 1598 deletions

diff --git a/source3/libsmb/cliconnect.c b/source3/libsmb/cliconnect.c
index b9634eb402..9c1e3e1275 100644
--- a/source3/libsmb/cliconnect.c
+++ b/source3/libsmb/cliconnect.c
@@ -1962,7 +1962,8 @@ static ADS_STATUS cli_session_setup_spnego(struct cli_state *cli,
 			} else {
 				principal = kerberos_get_principal_from_service_hostname(talloc_tos(),
 											 "cifs",
-											 remote_name);
+											 remote_name,
+											 lp_realm());
 			}
 
 			if (!principal) {
diff --git a/source3/libsmb/clikrb5.c b/source3/libsmb/clikrb5.c
deleted file mode 100644
index 792400b3ce..0000000000
--- a/source3/libsmb/clikrb5.c
+++ /dev/null
@@ -1,1597 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   simple kerberos5 routines for active directory
-   Copyright (C) Andrew Tridgell 2001
-   Copyright (C) Luke Howard 2002-2003
-   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
-   Copyright (C) Guenther Deschner 2005-2009
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "smb_krb5.h"
-#include "../librpc/gen_ndr/krb5pac.h"
-#include "../lib/util/asn1.h"
-#include "libsmb/nmblib.h"
-
-#ifndef KRB5_AUTHDATA_WIN2K_PAC
-#define KRB5_AUTHDATA_WIN2K_PAC 128
-#endif
-
-#ifndef KRB5_AUTHDATA_IF_RELEVANT
-#define KRB5_AUTHDATA_IF_RELEVANT 1
-#endif
-
-#ifdef HAVE_KRB5
-
-#define GSSAPI_CHECKSUM      0x8003             /* Checksum type value for Kerberos */
-#define GSSAPI_BNDLENGTH     16                 /* Bind Length (rfc-1964 pg.3) */
-#define GSSAPI_CHECKSUM_SIZE (4+GSSAPI_BNDLENGTH+4) /* Length of bind length,
-							bind field, flags field. */
-
-/* MIT krb5 1.7beta3 (in Ubuntu Karmic) is missing the prototype,
-   but still has the symbol */
-#if !HAVE_DECL_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE
-krb5_error_code krb5_auth_con_set_req_cksumtype(  
-	krb5_context     context,
-	krb5_auth_context      auth_context,  
-	krb5_cksumtype     cksumtype);
-#endif
-
-#if !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
-
-#if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
-
-/* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
- * to krb5_set_default_tgs_ktypes. See
- *         http://lists.samba.org/archive/samba-technical/2006-July/048271.html
- *
- * If the MIT libraries are not exporting internal symbols, we will end up in
- * this branch, which is correct. Otherwise we will continue to use the
- * internal symbol
- */
- krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
-{
-    return krb5_set_default_tgs_enctypes(ctx, enc);
-}
-
-#elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
-
-/* Heimdal */
- krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
-{
-	return krb5_set_default_in_tkt_etypes(ctx, enc);
-}
-
-#endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
-
-#endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
-
-#if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
-/* HEIMDAL */
- bool setup_kaddr( krb5_address *pkaddr, struct sockaddr_storage *paddr)
-{
-	memset(pkaddr, '\0', sizeof(krb5_address));
-#if defined(HAVE_IPV6) && defined(KRB5_ADDRESS_INET6)
-	if (paddr->ss_family == AF_INET6) {
-		pkaddr->addr_type = KRB5_ADDRESS_INET6;
-		pkaddr->address.length = sizeof(((struct sockaddr_in6 *)paddr)->sin6_addr);
-		pkaddr->address.data = (char *)&(((struct sockaddr_in6 *)paddr)->sin6_addr);
-		return true;
-	}
-#endif
-	if (paddr->ss_family == AF_INET) {
-		pkaddr->addr_type = KRB5_ADDRESS_INET;
-		pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
-		pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
-		return true;
-	}
-	return false;
-}
-#elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
-/* MIT */
- bool setup_kaddr( krb5_address *pkaddr, struct sockaddr_storage *paddr)
-{
-	memset(pkaddr, '\0', sizeof(krb5_address));
-#if defined(HAVE_IPV6) && defined(ADDRTYPE_INET6)
-	if (paddr->ss_family == AF_INET6) {
-		pkaddr->addrtype = ADDRTYPE_INET6;
-		pkaddr->length = sizeof(((struct sockaddr_in6 *)paddr)->sin6_addr);
-		pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in6 *)paddr)->sin6_addr);
-		return true;
-	}
-#endif
-	if (paddr->ss_family == AF_INET) {
-		pkaddr->addrtype = ADDRTYPE_INET;
-		pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
-		pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in *)paddr)->sin_addr);
-		return true;
-	}
-	return false;
-}
-#else
-#error UNKNOWN_ADDRTYPE
-#endif
-
- int create_kerberos_key_from_string(krb5_context context,
-					krb5_principal host_princ,
-					krb5_data *password,
-					krb5_keyblock *key,
-					krb5_enctype enctype,
-					bool no_salt)
-{
-	krb5_principal salt_princ = NULL;
-	int ret;
-	/*
-	 * Check if we've determined that the KDC is salting keys for this
-	 * principal/enctype in a non-obvious way.  If it is, try to match
-	 * its behavior.
-	 */
-	if (no_salt) {
-		KRB5_KEY_DATA(key) = (KRB5_KEY_DATA_CAST *)SMB_MALLOC(password->length);
-		if (!KRB5_KEY_DATA(key)) {
-			return ENOMEM;
-		}
-		memcpy(KRB5_KEY_DATA(key), password->data, password->length);
-		KRB5_KEY_LENGTH(key) = password->length;
-		KRB5_KEY_TYPE(key) = enctype;
-		return 0;
-	}
-	salt_princ = kerberos_fetch_salt_princ_for_host_princ(context, host_princ, enctype);
-	ret = create_kerberos_key_from_string_direct(context, salt_princ ? salt_princ : host_princ, password, key, enctype);
-	if (salt_princ) {
-		krb5_free_principal(context, salt_princ);
-	}
-	return ret;
-}
-
-#if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
- krb5_error_code get_kerberos_allowed_etypes(krb5_context context, 
-					    krb5_enctype **enctypes)
-{
-	return krb5_get_permitted_enctypes(context, enctypes);
-}
-#elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
- krb5_error_code get_kerberos_allowed_etypes(krb5_context context, 
-					    krb5_enctype **enctypes)
-{
-#ifdef HAVE_KRB5_PDU_NONE_DECL
-	return krb5_get_default_in_tkt_etypes(context, KRB5_PDU_NONE, enctypes);
-#else
-	return krb5_get_default_in_tkt_etypes(context, enctypes);
-#endif
-}
-#else
-#error UNKNOWN_GET_ENCTYPES_FUNCTIONS
-#endif
-
-#if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
- krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
-					krb5_auth_context auth_context,
-					krb5_keyblock *keyblock)
-{
-	return krb5_auth_con_setkey(context, auth_context, keyblock);
-}
-#endif
-
-bool unwrap_edata_ntstatus(TALLOC_CTX *mem_ctx, 
-			   DATA_BLOB *edata, 
-			   DATA_BLOB *edata_out)
-{
-	DATA_BLOB edata_contents;
-	ASN1_DATA *data;
-	int edata_type;
-
-	if (!edata->length) {
-		return False;
-	}
-
-	data = asn1_init(mem_ctx);
-	if (data == NULL) {
-		return false;
-	}
-
-	asn1_load(data, *edata);
-	asn1_start_tag(data, ASN1_SEQUENCE(0));
-	asn1_start_tag(data, ASN1_CONTEXT(1));
-	asn1_read_Integer(data, &edata_type);
-
-	if (edata_type != KRB5_PADATA_PW_SALT) {
-		DEBUG(0,("edata is not of required type %d but of type %d\n", 
-			KRB5_PADATA_PW_SALT, edata_type));
-		asn1_free(data);
-		return False;
-	}
-	
-	asn1_start_tag(data, ASN1_CONTEXT(2));
-	asn1_read_OctetString(data, talloc_tos(), &edata_contents);
-	asn1_end_tag(data);
-	asn1_end_tag(data);
-	asn1_end_tag(data);
-	asn1_free(data);
-
-	*edata_out = data_blob_talloc(mem_ctx, edata_contents.data, edata_contents.length);
-
-	data_blob_free(&edata_contents);
-
-	return True;
-}
-
-
-static bool ads_cleanup_expired_creds(krb5_context context, 
-				      krb5_ccache  ccache,
-				      krb5_creds  *credsp)
-{
-	krb5_error_code retval;
-	const char *cc_type = krb5_cc_get_type(context, ccache);
-
-	DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
-		  cc_type, krb5_cc_get_name(context, ccache),
-		  http_timestring(talloc_tos(), credsp->times.endtime)));
-
-	/* we will probably need new tickets if the current ones
-	   will expire within 10 seconds.
-	*/
-	if (credsp->times.endtime >= (time(NULL) + 10))
-		return False;
-
-	/* heimdal won't remove creds from a file ccache, and 
-	   perhaps we shouldn't anyway, since internally we 
-	   use memory ccaches, and a FILE one probably means that
-	   we're using creds obtained outside of our exectuable
-	*/
-	if (strequal(cc_type, "FILE")) {
-		DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type));
-		return False;
-	}
-
-	retval = krb5_cc_remove_cred(context, ccache, 0, credsp);
-	if (retval) {
-		DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
-			  error_message(retval)));
-		/* If we have an error in this, we want to display it,
-		   but continue as though we deleted it */
-	}
-	return True;
-}
-
-/* Allocate and setup the auth context into the state we need. */
-
-static krb5_error_code setup_auth_context(krb5_context context,
-			krb5_auth_context *auth_context)
-{
-	krb5_error_code retval;
-
-	retval = krb5_auth_con_init(context, auth_context );
-	if (retval) {
-		DEBUG(1,("krb5_auth_con_init failed (%s)\n",
-			error_message(retval)));
-		return retval;
-	}
-
-	/* Ensure this is an addressless ticket. */
-	retval = krb5_auth_con_setaddrs(context, *auth_context, NULL, NULL);
-	if (retval) {
-		DEBUG(1,("krb5_auth_con_setaddrs failed (%s)\n",
-			error_message(retval)));
-	}
-
-	return retval;
-}
-
-#if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
-static krb5_error_code create_gss_checksum(krb5_data *in_data, /* [inout] */
-						uint32_t gss_flags)
-{
-	unsigned int orig_length = in_data->length;
-	unsigned int base_cksum_size = GSSAPI_CHECKSUM_SIZE;
-	char *gss_cksum = NULL;
-
-	if (orig_length) {
-		/* Extra length field for delgated ticket. */
-		base_cksum_size += 4;
-	}
-
-	if ((unsigned int)base_cksum_size + orig_length <
-			(unsigned int)base_cksum_size) {
-                return EINVAL;
-        }
-
-	gss_cksum = (char *)SMB_MALLOC(base_cksum_size + orig_length);
-	if (gss_cksum == NULL) {
-		return ENOMEM;
-        }
-
-	memset(gss_cksum, '\0', base_cksum_size + orig_length);
-	SIVAL(gss_cksum, 0, GSSAPI_BNDLENGTH);
-
-	/*
-	 * GSS_C_NO_CHANNEL_BINDINGS means 16 zero bytes.
-	 * This matches the behavior of heimdal and mit.
-	 *
-	 * And it is needed to work against some closed source
-	 * SMB servers.
-	 *
-	 * See bug #7883
-	 */
-	memset(&gss_cksum[4], 0x00, GSSAPI_BNDLENGTH);
-
-	SIVAL(gss_cksum, 20, gss_flags);
-
-	if (orig_length) {
-		SSVAL(gss_cksum, 24, 1); /* The Delegation Option identifier */
-		SSVAL(gss_cksum, 26, orig_length);
-		/* Copy the kerberos KRB_CRED data */
-		memcpy(gss_cksum + 28, in_data->data, orig_length);
-		free(in_data->data);
-		in_data->data = NULL;
-		in_data->length = 0;
-	}
-	in_data->data = gss_cksum;
-	in_data->length = base_cksum_size + orig_length;
-	return 0;
-}
-#endif
-
-/*
-  we can't use krb5_mk_req because w2k wants the service to be in a particular format
-*/
-static krb5_error_code ads_krb5_mk_req(krb5_context context, 
-				       krb5_auth_context *auth_context, 
-				       const krb5_flags ap_req_options,
-				       const char *principal,
-				       krb5_ccache ccache, 
-				       krb5_data *outbuf, 
-				       time_t *expire_time,
-				       const char *impersonate_princ_s)
-{
-	krb5_error_code 	  retval;
-	krb5_principal	  server;
-	krb5_principal impersonate_princ = NULL;
-	krb5_creds 		* credsp;
-	krb5_creds 		  creds;
-	krb5_data in_data;
-	bool creds_ready = False;
-	int i = 0, maxtries = 3;
-
-	ZERO_STRUCT(in_data);
-
-	retval = smb_krb5_parse_name(context, principal, &server);
-	if (retval) {
-		DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal));
-		return retval;
-	}
-
-	if (impersonate_princ_s) {
-		retval = smb_krb5_parse_name(context, impersonate_princ_s,
-					     &impersonate_princ);
-		if (retval) {
-			DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", impersonate_princ_s));
-			goto cleanup_princ;
-		}
-	}
-
-	/* obtain ticket & session key */
-	ZERO_STRUCT(creds);
-	if ((retval = krb5_copy_principal(context, server, &creds.server))) {
-		DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n", 
-			 error_message(retval)));
-		goto cleanup_princ;
-	}
-	
-	if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
-		/* This can commonly fail on smbd startup with no ticket in the cache.
-		 * Report at higher level than 1. */
-		DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
-			 error_message(retval)));
-		goto cleanup_creds;
-	}
-
-	while (!creds_ready && (i < maxtries)) {
-
-		if ((retval = smb_krb5_get_credentials(context, ccache,
-						       creds.client,
-						       creds.server,
-						       impersonate_princ,
-						       &credsp))) {
-			DEBUG(1,("ads_krb5_mk_req: smb_krb5_get_credentials failed for %s (%s)\n",
-				principal, error_message(retval)));
-			goto cleanup_creds;
-		}
-
-		/* cope with ticket being in the future due to clock skew */
-		if ((unsigned)credsp->times.starttime > time(NULL)) {
-			time_t t = time(NULL);
-			int time_offset =(int)((unsigned)credsp->times.starttime-t);
-			DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset));
-			krb5_set_real_time(context, t + time_offset + 1, 0);
-		}
-
-		if (!ads_cleanup_expired_creds(context, ccache, credsp)) {
-			creds_ready = True;
-		}
-
-		i++;
-	}
-
-	DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
-		  principal, krb5_cc_get_type(context, ccache), krb5_cc_get_name(context, ccache),
-		  http_timestring(talloc_tos(), (unsigned)credsp->times.endtime), 
-		  (unsigned)credsp->times.endtime));
-
-	if (expire_time) {
-		*expire_time = (time_t)credsp->times.endtime;
-	}
-
-	/* Allocate the auth_context. */
-	retval = setup_auth_context(context, auth_context);
-	if (retval) {
-		DEBUG(1,("setup_auth_context failed (%s)\n",
-			error_message(retval)));
-		goto cleanup_creds;
-	}
-
-#if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
-	{
-		uint32_t gss_flags = 0;
-
-		if( credsp->ticket_flags & TKT_FLG_OK_AS_DELEGATE ) {
-			/* Fetch a forwarded TGT from the KDC so that we can hand off a 2nd ticket
-			 as part of the kerberos exchange. */
-
-			DEBUG( 3, ("ads_krb5_mk_req: server marked as OK to delegate to, building forwardable TGT\n")  );
-
-			retval = krb5_auth_con_setuseruserkey(context,
-					*auth_context,
-					&credsp->keyblock );
-			if (retval) {
-				DEBUG(1,("krb5_auth_con_setuseruserkey failed (%s)\n",
-					error_message(retval)));
-				goto cleanup_creds;
-			}
-
-			/* Must use a subkey for forwarded tickets. */
-			retval = krb5_auth_con_setflags(context,
-				*auth_context,
-				KRB5_AUTH_CONTEXT_USE_SUBKEY);
-			if (retval) {
-				DEBUG(1,("krb5_auth_con_setflags failed (%s)\n",
-					error_message(retval)));
-				goto cleanup_creds;
-			}
-
-			retval = krb5_fwd_tgt_creds(context,/* Krb5 context [in] */
-				*auth_context,  /* Authentication context [in] */
-				discard_const_p(char, KRB5_TGS_NAME),  /* Ticket service name ("krbtgt") [in] */
-				credsp->client, /* Client principal for the tgt [in] */
-				credsp->server, /* Server principal for the tgt [in] */
-				ccache,         /* Credential cache to use for storage [in] */
-				1,              /* Turn on for "Forwardable ticket" [in] */
-				&in_data );     /* Resulting response [out] */
-
-			if (retval) {
-				DEBUG( 3, ("krb5_fwd_tgt_creds failed (%s)\n",
-					   error_message( retval ) ) );
-
-				/*
-				 * This is not fatal. Delete the *auth_context and continue
-				 * with krb5_mk_req_extended to get a non-forwardable ticket.
-				 */
-
-				if (in_data.data) {
-					free( in_data.data );
-					in_data.data = NULL;
-					in_data.length = 0;
-				}
-				krb5_auth_con_free(context, *auth_context);
-				*auth_context = NULL;
-				retval = setup_auth_context(context, auth_context);
-				if (retval) {
-					DEBUG(1,("setup_auth_context failed (%s)\n",
-						error_message(retval)));
-					goto cleanup_creds;
-				}
-			} else {
-				/* We got a delegated ticket. */
-				gss_flags |= GSS_C_DELEG_FLAG;
-			}
-		}
-
-		/* Frees and reallocates in_data into a GSS checksum blob. */
-		retval = create_gss_checksum(&in_data, gss_flags);
-		if (retval) {
-			goto cleanup_data;
-		}
-
-		/* We always want GSS-checksum types. */
-		retval = krb5_auth_con_set_req_cksumtype(context, *auth_context, GSSAPI_CHECKSUM );
-		if (retval) {
-			DEBUG(1,("krb5_auth_con_set_req_cksumtype failed (%s)\n",
-				error_message(retval)));
-			goto cleanup_data;
-		}
-	}
-#endif
-
-	retval = krb5_mk_req_extended(context, auth_context, ap_req_options, 
-				      &in_data, credsp, outbuf);
-	if (retval) {
-		DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n", 
-			 error_message(retval)));
-	}
-
-#if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
-cleanup_data:
-#endif
-
-	if (in_data.data) {
-		free( in_data.data );
-		in_data.length = 0;
-	}
-
-	krb5_free_creds(context, credsp);
-
-cleanup_creds:
-	krb5_free_cred_contents(context, &creds);
-
-cleanup_princ:
-	krb5_free_principal(context, server);
-	if (impersonate_princ) {
-		krb5_free_principal(context, impersonate_princ);
-	}
-
-	return retval;
-}
-
-/*
-  get a kerberos5 ticket for the given service
-*/
-int cli_krb5_get_ticket(TALLOC_CTX *mem_ctx,
-			const char *principal, time_t time_offset,
-			DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
-			uint32_t extra_ap_opts, const char *ccname,
-			time_t *tgs_expire,
-			const char *impersonate_princ_s)
-
-{
-	krb5_error_code retval;
-	krb5_data packet;
-	krb5_context context = NULL;
-	krb5_ccache ccdef = NULL;
-	krb5_auth_context auth_context = NULL;
-	krb5_enctype enc_types[] = {
-		ENCTYPE_ARCFOUR_HMAC,
-		ENCTYPE_DES_CBC_MD5,
-		ENCTYPE_DES_CBC_CRC,
-		ENCTYPE_NULL};
-
-	initialize_krb5_error_table();
-	retval = krb5_init_context(&context);
-	if (retval) {
-		DEBUG(1, ("krb5_init_context failed (%s)\n",
-			 error_message(retval)));
-		goto failed;
-	}
-
-	if (time_offset != 0) {
-		krb5_set_real_time(context, time(NULL) + time_offset, 0);
-	}
-
-	if ((retval = krb5_cc_resolve(context, ccname ?
-			ccname : krb5_cc_default_name(context), &ccdef))) {
-		DEBUG(1, ("krb5_cc_default failed (%s)\n",
-			 error_message(retval)));
-		goto failed;
-	}
-
-	if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
-		DEBUG(1, ("krb5_set_default_tgs_ktypes failed (%s)\n",
-			 error_message(retval)));
-		goto failed;
-	}
-
-	retval = ads_krb5_mk_req(context, &auth_context,
-				AP_OPTS_USE_SUBKEY | (krb5_flags)extra_ap_opts,
-				principal, ccdef, &packet,
-				tgs_expire, impersonate_princ_s);
-	if (retval) {
-		goto failed;
-	}
-
-	get_krb5_smb_session_key(mem_ctx, context, auth_context,
-				 session_key_krb5, false);
-
-	*ticket = data_blob_talloc(mem_ctx, packet.data, packet.length);
-
- 	kerberos_free_data_contents(context, &packet);
-
-failed:
-
-	if (context) {
-		if (ccdef)
-			krb5_cc_close(context, ccdef);
-		if (auth_context)
-			krb5_auth_con_free(context, auth_context);
-		krb5_free_context(context);
-	}
-
-	return retval;
-}
-
-bool get_krb5_smb_session_key(TALLOC_CTX *mem_ctx,
-			      krb5_context context,
-			      krb5_auth_context auth_context,
-			      DATA_BLOB *session_key, bool remote)
-{
-	krb5_keyblock *skey = NULL;
-	krb5_error_code err = 0;
-	bool ret = false;
-
-	if (remote) {
-		err = krb5_auth_con_getremotesubkey(context,
-						    auth_context, &skey);
-	} else {
-		err = krb5_auth_con_getlocalsubkey(context,
-						   auth_context, &skey);
-	}
-
-	if (err || skey == NULL) {
-		DEBUG(10, ("KRB5 error getting session key %d\n", err));
-		goto done;
-	}
-
-	DEBUG(10, ("Got KRB5 session key of length %d\n",
-		   (int)KRB5_KEY_LENGTH(skey)));
-
-	*session_key = data_blob_talloc(mem_ctx,
-					 KRB5_KEY_DATA(skey),
-					 KRB5_KEY_LENGTH(skey));
-	dump_data_pw("KRB5 Session Key:\n",
-		     session_key->data,
-		     session_key->length);
-
-	ret = true;
-
-done:
-	if (skey) {
-		krb5_free_keyblock(context, skey);
-	}
-
-	return ret;
-}
-
-
-#if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
- const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i );
-
- const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
-{
-	static krb5_data kdata;
-
-	kdata.data = discard_const_p(char, krb5_principal_get_comp_string(context, principal, i));
-	kdata.length = strlen((const char *)kdata.data);
-	return &kdata;
-}
-#endif
-
-/* Prototypes */
-
- krb5_error_code smb_krb5_renew_ticket(const char *ccache_string,	/* FILE:/tmp/krb5cc_0 */
-				       const char *client_string,	/* gd@BER.SUSE.DE */
-				       const char *service_string,	/* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
-				       time_t *expire_time)
-{
-	krb5_error_code ret;
-	krb5_context context = NULL;
-	krb5_ccache ccache = NULL;
-	krb5_principal client = NULL;
-	krb5_creds creds, creds_in, *creds_out = NULL;
-
-	ZERO_STRUCT(creds);
-	ZERO_STRUCT(creds_in);
-
-	initialize_krb5_error_table();
-	ret = krb5_init_context(&context);
-	if (ret) {
-		goto done;
-	}
-
-	if (!ccache_string) {
-		ccache_string = krb5_cc_default_name(context);
-	}
-
-	if (!ccache_string) {
-		ret = EINVAL;
-		goto done;
-	}
-
-	DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string));
-
-	/* FIXME: we should not fall back to defaults */
-	ret = krb5_cc_resolve(context, discard_const_p(char, ccache_string), &ccache);
-	if (ret) {
-		goto done;
-	}
-
-	if (client_string) {
-		ret = smb_krb5_parse_name(context, client_string, &client);
-		if (ret) {
-			goto done;
-		}
-	} else {
-		ret = krb5_cc_get_principal(context, ccache, &client);
-		if (ret) {
-			goto done;
-		}
-	}
-
-	ret = krb5_get_renewed_creds(context, &creds, client, ccache, discard_const_p(char, service_string));
-	if (ret) {
-		DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
-		goto done;
-	}
-
-	/* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
-	ret = krb5_cc_initialize(context, ccache, client);
-	if (ret) {
-		goto done;
-	}
-	
-	ret = krb5_cc_store_cred(context, ccache, &creds);
-
-	if (expire_time) {
-		*expire_time = (time_t) creds.times.endtime;
-	}
-
-done:
-	krb5_free_cred_contents(context, &creds_in);
-
-	if (creds_out) {
-		krb5_free_creds(context, creds_out);
-	} else {
-		krb5_free_cred_contents(context, &creds);
-	}
-
-	if (client) {
-		krb5_free_principal(context, client);
-	}
-	if (ccache) {
-		krb5_cc_close(context, ccache);
-	}
-	if (context) {
-		krb5_free_context(context);
-	}
-
-	return ret;
-}
-
- krb5_error_code smb_krb5_free_addresses(krb5_context context, smb_krb5_addresses *addr)
-{
-	krb5_error_code ret = 0;
-	if (addr == NULL) {
-		return ret;
-	}
-#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
-	krb5_free_addresses(context, addr->addrs);
-#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
-	ret = krb5_free_addresses(context, addr->addrs);
-	SAFE_FREE(addr->addrs);
-#endif
-	SAFE_FREE(addr);
-	addr = NULL;
-	return ret;
-}
-
- krb5_error_code smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses **kerb_addr)
-{
-	krb5_error_code ret = 0;
-	nstring buf;
-#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
-	krb5_address **addrs = NULL;
-#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
-	krb5_addresses *addrs = NULL;
-#endif
-
-	*kerb_addr = (smb_krb5_addresses *)SMB_MALLOC(sizeof(smb_krb5_addresses));
-	if (*kerb_addr == NULL) {
-		return ENOMEM;
-	}
-
-	put_name(buf, lp_netbios_name(), ' ', 0x20);
-
-#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
-	{
-		int num_addr = 2;
-
-		addrs = (krb5_address **)SMB_MALLOC(sizeof(krb5_address *) * num_addr);
-		if (addrs == NULL) {
-			SAFE_FREE(*kerb_addr);
-			return ENOMEM;
-		}
-
-		memset(addrs, 0, sizeof(krb5_address *) * num_addr);
-
-		addrs[0] = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
-		if (addrs[0] == NULL) {
-			SAFE_FREE(addrs);
-			SAFE_FREE(*kerb_addr);
-			return ENOMEM;
-		}
-
-		addrs[0]->magic = KV5M_ADDRESS;
-		addrs[0]->addrtype = KRB5_ADDR_NETBIOS;
-		addrs[0]->length = MAX_NETBIOSNAME_LEN;
-		addrs[0]->contents = (unsigned char *)SMB_MALLOC(addrs[0]->length);
-		if (addrs[0]->contents == NULL) {
-			SAFE_FREE(addrs[0]);
-			SAFE_FREE(addrs);
-			SAFE_FREE(*kerb_addr);
-			return ENOMEM;
-		}
-
-		memcpy(addrs[0]->contents, buf, addrs[0]->length);
-
-		addrs[1] = NULL;
-	}
-#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
-	{
-		addrs = (krb5_addresses *)SMB_MALLOC(sizeof(krb5_addresses));
-		if (addrs == NULL) {
-			SAFE_FREE(*kerb_addr);
-			return ENOMEM;
-		}
-
-		memset(addrs, 0, sizeof(krb5_addresses));
-
-		addrs->len = 1;
-		addrs->val = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
-		if (addrs->val == NULL) {
-			SAFE_FREE(addrs);
-			SAFE_FREE(kerb_addr);
-			return ENOMEM;
-		}
-
-		addrs->val[0].addr_type = KRB5_ADDR_NETBIOS;
-		addrs->val[0].address.length = MAX_NETBIOSNAME_LEN;
-		addrs->val[0].address.data = (unsigned char *)SMB_MALLOC(addrs->val[0].address.length);
-		if (addrs->val[0].address.data == NULL) {
-			SAFE_FREE(addrs->val);
-			SAFE_FREE(addrs);
-			SAFE_FREE(*kerb_addr);
-			return ENOMEM;
-		}
-
-		memcpy(addrs->val[0].address.data, buf, addrs->val[0].address.length);
-	}
-#else
-#error UNKNOWN_KRB5_ADDRESS_FORMAT
-#endif
-	(*kerb_addr)->addrs = addrs;
-
-	return ret;
-}
-
- void smb_krb5_free_error(krb5_context context, krb5_error *krberror)
-{
-#ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
-	krb5_free_error_contents(context, krberror);
-#else /* MIT */
-	krb5_free_error(context, krberror);
-#endif
-}
-
- krb5_error_code handle_krberror_packet(krb5_context context,
-					krb5_data *packet)
-{
-	krb5_error_code ret;
-	bool got_error_code = False;
-
-	DEBUG(10,("handle_krberror_packet: got error packet\n"));
-	
-#ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
-	{
-		krb5_error krberror;
-
-		if ((ret = krb5_rd_error(context, packet, &krberror))) {
-			DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n", 
-				error_message(ret)));
-			return ret;
-		}
-
-		if (krberror.e_data == NULL || krberror.e_data->data == NULL) {
-			ret = (krb5_error_code) krberror.error_code;
-			got_error_code = True;
-		}
-
-		smb_krb5_free_error(context, &krberror);
-	}
-#else /* MIT */
-	{
-		krb5_error *krberror;
-
-		if ((ret = krb5_rd_error(context, packet, &krberror))) {
-			DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n", 
-				error_message(ret)));
-			return ret;
-		}
-
-		if (krberror->e_data.data == NULL) {
-#if defined(ERROR_TABLE_BASE_krb5)
-			ret = ERROR_TABLE_BASE_krb5 + (krb5_error_code) krberror->error;
-#else
-			ret = (krb5_error_code)krberror->error;
-#endif
-			got_error_code = True;
-		}
-		smb_krb5_free_error(context, krberror);
-	}
-#endif
-	if (got_error_code) {
-		DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n", 
-			error_message(ret), ret));
-	}
-	return ret;
-}
-
- krb5_error_code smb_krb5_get_init_creds_opt_alloc(krb5_context context,
-					    krb5_get_init_creds_opt **opt)
-{
-	/* Heimdal or modern MIT version */
-	return krb5_get_init_creds_opt_alloc(context, opt);
-}
-
- void smb_krb5_get_init_creds_opt_free(krb5_context context,
-				krb5_get_init_creds_opt *opt)
-{
-	/* Modern MIT or Heimdal version */
-	krb5_get_init_creds_opt_free(context, opt);
-}
-
- krb5_enctype smb_get_enctype_from_kt_entry(krb5_keytab_entry *kt_entry)
-{
-	return KRB5_KEY_TYPE(KRB5_KT_KEY(kt_entry));
-}
-
-
-/* caller needs to free etype_s */
- krb5_error_code smb_krb5_enctype_to_string(krb5_context context, 
- 					    krb5_enctype enctype, 
-					    char **etype_s)
-{
-#ifdef HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG
-	return krb5_enctype_to_string(context, enctype, etype_s); /* Heimdal */
-#elif defined(HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG)
-	char buf[256];
-	krb5_error_code ret = krb5_enctype_to_string(enctype, buf, 256); /* MIT */
-	if (ret) {
-		return ret;
-	}
-	*etype_s = SMB_STRDUP(buf);
-	if (!*etype_s) {
-		return ENOMEM;
-	}
-	return ret;
-#else
-#error UNKNOWN_KRB5_ENCTYPE_TO_STRING_FUNCTION
-#endif
-}
-
-/**********************************************************************
- * Open a krb5 keytab with flags, handles readonly or readwrite access and
- * allows to process non-default keytab names.
- * @param context krb5_context 
- * @param keytab_name_req string
- * @param write_access bool if writable keytab is required
- * @param krb5_keytab pointer to krb5_keytab (close with krb5_kt_close())
- * @return krb5_error_code
-**********************************************************************/
-
-/* This MAX_NAME_LEN is a constant defined in krb5.h */
-#ifndef MAX_KEYTAB_NAME_LEN
-#define MAX_KEYTAB_NAME_LEN 1100
-#endif
-
- krb5_error_code smb_krb5_open_keytab(krb5_context context,
-				      const char *keytab_name_req,
-				      bool write_access,
-				      krb5_keytab *keytab)
-{
-	krb5_error_code ret = 0;
-	TALLOC_CTX *mem_ctx;
-	char keytab_string[MAX_KEYTAB_NAME_LEN];
-	char *kt_str = NULL;
-	bool found_valid_name = False;
-	const char *pragma = "FILE";
-	const char *tmp = NULL;
-
-	if (!write_access && !keytab_name_req) {
-		/* caller just wants to read the default keytab readonly, so be it */
-		return krb5_kt_default(context, keytab);
-	}
-
-	mem_ctx = talloc_init("smb_krb5_open_keytab");
-	if (!mem_ctx) {
-		return ENOMEM;
-	}
-
-#ifdef HAVE_WRFILE_KEYTAB 
-	if (write_access) {
-		pragma = "WRFILE";
-	}
-#endif
-
-	if (keytab_name_req) {
-
-		if (strlen(keytab_name_req) > MAX_KEYTAB_NAME_LEN) {
-			ret = KRB5_CONFIG_NOTENUFSPACE;
-			goto out;
-		}
-
-		if ((strncmp(keytab_name_req, "WRFILE:/", 8) == 0) || 
-		    (strncmp(keytab_name_req, "FILE:/", 6) == 0)) {
-		    	tmp = keytab_name_req;
-			goto resolve;
-		}
-
-		if (keytab_name_req[0] != '/') {
-			ret = KRB5_KT_BADNAME;
-			goto out;
-		}
-
-		tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, keytab_name_req);
-		if (!tmp) {
-			ret = ENOMEM;
-			goto out;
-		}
-
-		goto resolve;
-	}
-
-	/* we need to handle more complex keytab_strings, like:
-	 * "ANY:FILE:/etc/krb5.keytab,krb4:/etc/srvtab" */
-
-	ret = krb5_kt_default_name(context, &keytab_string[0], MAX_KEYTAB_NAME_LEN - 2);
-	if (ret) {
-		goto out;
-	}
-
-	DEBUG(10,("smb_krb5_open_keytab: krb5_kt_default_name returned %s\n", keytab_string));
-
-	tmp = talloc_strdup(mem_ctx, keytab_string);
-	if (!tmp) {
-		ret = ENOMEM;
-		goto out;
-	}
-
-	if (strncmp(tmp, "ANY:", 4) == 0) {
-		tmp += 4;
-	}
-
-	memset(&keytab_string, '\0', sizeof(keytab_string));
-
-	while (next_token_talloc(mem_ctx, &tmp, &kt_str, ",")) {
-		if (strncmp(kt_str, "WRFILE:", 7) == 0) {
-			found_valid_name = True;
-			tmp = kt_str;
-			tmp += 7;
-		}
-
-		if (strncmp(kt_str, "FILE:", 5) == 0) {
-			found_valid_name = True;
-			tmp = kt_str;
-			tmp += 5;
-		}
-
-		if (tmp[0] == '/') {
-			/* Treat as a FILE: keytab definition. */
-			found_valid_name = true;
-		}
-
-		if (found_valid_name) {
-			if (tmp[0] != '/') {
-				ret = KRB5_KT_BADNAME;
-				goto out;
-			}
-
-			tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, tmp);
-			if (!tmp) {
-				ret = ENOMEM;
-				goto out;
-			}
-			break;
-		}
-	}
-
-	if (!found_valid_name) {
-		ret = KRB5_KT_UNKNOWN_TYPE;
-		goto out;
-	}
-
- resolve:
- 	DEBUG(10,("smb_krb5_open_keytab: resolving: %s\n", tmp));
-	ret = krb5_kt_resolve(context, tmp, keytab);
-
- out:
- 	TALLOC_FREE(mem_ctx);
- 	return ret;
-}
-
-krb5_error_code smb_krb5_keytab_name(TALLOC_CTX *mem_ctx,
-				     krb5_context context,
-				     krb5_keytab keytab,
-				     const char **keytab_name)
-{
-	char keytab_string[MAX_KEYTAB_NAME_LEN];
-	krb5_error_code ret = 0;
-
-	ret = krb5_kt_get_name(context, keytab,
-			       keytab_string, MAX_KEYTAB_NAME_LEN - 2);
-	if (ret) {
-		return ret;
-	}
-
-	*keytab_name = talloc_strdup(mem_ctx, keytab_string);
-	if (!*keytab_name) {
-		return ENOMEM;
-	}
-
-	return ret;
-}
-
-#if defined(HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE) && \
-    defined(HAVE_KRB5_GET_CREDS_OPT_ALLOC) && \
-    defined(HAVE_KRB5_GET_CREDS)
-static krb5_error_code smb_krb5_get_credentials_for_user_opt(krb5_context context,
-							     krb5_ccache ccache,
-							     krb5_principal me,
-							     krb5_principal server,
-							     krb5_principal impersonate_princ,
-							     krb5_creds **out_creds)
-{
-	krb5_error_code ret;
-	krb5_get_creds_opt opt;
-
-	ret = krb5_get_creds_opt_alloc(context, &opt);
-	if (ret) {
-		goto done;
-	}
-	krb5_get_creds_opt_add_options(context, opt, KRB5_GC_FORWARDABLE);
-
-	if (impersonate_princ) {
-		ret = krb5_get_creds_opt_set_impersonate(context, opt,
-							 impersonate_princ);
-		if (ret) {
-			goto done;
-		}
-	}
-
-	ret = krb5_get_creds(context, opt, ccache, server, out_creds);
-	if (ret) {
-		goto done;
-	}
-
- done:
-	if (opt) {
-		krb5_get_creds_opt_free(context, opt);
-	}
-	return ret;
-}
-#endif /* HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE */
-
-#ifdef HAVE_KRB5_GET_CREDENTIALS_FOR_USER
-static krb5_error_code smb_krb5_get_credentials_for_user(krb5_context context,
-							 krb5_ccache ccache,
-							 krb5_principal me,
-							 krb5_principal server,
-							 krb5_principal impersonate_princ,
-							 krb5_creds **out_creds)
-{
-	krb5_error_code ret;
-	krb5_creds in_creds;
-
-#if !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER
-krb5_error_code KRB5_CALLCONV
-krb5_get_credentials_for_user(krb5_context context, krb5_flags options,
-                              krb5_ccache ccache, krb5_creds *in_creds,
-                              krb5_data *subject_cert,
-                              krb5_creds **out_creds);
-#endif /* !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER */
-
-	ZERO_STRUCT(in_creds);
-
-	if (impersonate_princ) {
-
-		in_creds.server = me;
-		in_creds.client = impersonate_princ;
-
-		ret = krb5_get_credentials_for_user(context,
-						    0, /* krb5_flags options */
-						    ccache,
-						    &in_creds,
-						    NULL, /* krb5_data *subject_cert */
-						    out_creds);
-	} else {
-		in_creds.client = me;
-		in_creds.server = server;
-
-		ret = krb5_get_credentials(context, 0, ccache,
-					   &in_creds, out_creds);
-	}
-
-	return ret;
-}
-#endif /* HAVE_KRB5_GET_CREDENTIALS_FOR_USER */
-
-/*
- * smb_krb5_get_credentials
- *
- * @brief Get krb5 credentials for a server
- *
- * @param[in] context		An initialized krb5_context
- * @param[in] ccache		An initialized krb5_ccache
- * @param[in] me		The krb5_principal of the caller
- * @param[in] server		The krb5_principal of the requested service
- * @param[in] impersonate_princ The krb5_principal of a user to impersonate as (optional)
- * @param[out] out_creds	The returned krb5_creds structure
- * @return krb5_error_code
- *
- */
-krb5_error_code smb_krb5_get_credentials(krb5_context context,
-					 krb5_ccache ccache,
-					 krb5_principal me,
-					 krb5_principal server,
-					 krb5_principal impersonate_princ,
-					 krb5_creds **out_creds)
-{
-	krb5_error_code ret;
-	krb5_creds *creds = NULL;
-
-	*out_creds = NULL;
-
-	if (impersonate_princ) {
-#ifdef HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE /* Heimdal */
-		ret = smb_krb5_get_credentials_for_user_opt(context, ccache, me, server, impersonate_princ, &creds);
-#elif defined(HAVE_KRB5_GET_CREDENTIALS_FOR_USER) /* MIT */
-		ret = smb_krb5_get_credentials_for_user(context, ccache, me, server, impersonate_princ, &creds);
-#else
-		ret = ENOTSUP;
-#endif
-	} else {
-		krb5_creds in_creds;
-
-		ZERO_STRUCT(in_creds);
-
-		in_creds.client = me;
-		in_creds.server = server;
-
-		ret = krb5_get_credentials(context, 0, ccache,
-					   &in_creds, &creds);
-	}
-	if (ret) {
-		goto done;
-	}
-
-	if (out_creds) {
-		*out_creds = creds;
-	}
-
- done:
-	if (creds && ret) {
-		krb5_free_creds(context, creds);
-	}
-
-	return ret;
-}
-
-/*
- * smb_krb5_get_creds
- *
- * @brief Get krb5 credentials for a server
- *
- * @param[in] server_s		The string name of the service
- * @param[in] time_offset	The offset to the KDCs time in seconds (optional)
- * @param[in] cc		The krb5 credential cache string name (optional)
- * @param[in] impersonate_princ_s The string principal name to impersonate (optional)
- * @param[out] creds_p		The returned krb5_creds structure
- * @return krb5_error_code
- *
- */
-krb5_error_code smb_krb5_get_creds(const char *server_s,
-				   time_t time_offset,
-				   const char *cc,
-				   const char *impersonate_princ_s,
-				   krb5_creds **creds_p)
-{
-	krb5_error_code ret;
-	krb5_context context = NULL;
-	krb5_principal me = NULL;
-	krb5_principal server = NULL;
-	krb5_principal impersonate_princ = NULL;
-	krb5_creds *creds = NULL;
-	krb5_ccache ccache = NULL;
-
-	*creds_p = NULL;
-
-	initialize_krb5_error_table();
-	ret = krb5_init_context(&context);
-	if (ret) {
-		goto done;
-	}
-
-	if (time_offset != 0) {
-		krb5_set_real_time(context, time(NULL) + time_offset, 0);
-	}
-
-	ret = krb5_cc_resolve(context, cc ? cc :
-		krb5_cc_default_name(context), &ccache);
-	if (ret) {
-		goto done;
-	}
-
-	ret = krb5_cc_get_principal(context, ccache, &me);
-	if (ret) {
-		goto done;
-	}
-
-	ret = smb_krb5_parse_name(context, server_s, &server);
-	if (ret) {
-		goto done;
-	}
-
-	if (impersonate_princ_s) {
-		ret = smb_krb5_parse_name(context, impersonate_princ_s,
-					  &impersonate_princ);
-		if (ret) {
-			goto done;
-		}
-	}
-
-	ret = smb_krb5_get_credentials(context, ccache,
-				       me, server, impersonate_princ,
-				       &creds);
-	if (ret) {
-		goto done;
-	}
-
-	ret = krb5_cc_store_cred(context, ccache, creds);
-	if (ret) {
-		goto done;
-	}
-
-	if (creds_p) {
-		*creds_p = creds;
-	}
-
-	DEBUG(1,("smb_krb5_get_creds: got ticket for %s\n",
-		server_s));
-
-	if (impersonate_princ_s) {
-		char *client = NULL;
-
-		ret = smb_krb5_unparse_name(talloc_tos(), context, creds->client, &client);
-		if (ret) {
-			goto done;
-		}
-		DEBUGADD(1,("smb_krb5_get_creds: using S4U2SELF impersonation as %s\n",
-			client));
-		TALLOC_FREE(client);
-	}
-
- done:
-	if (!context) {
-		return ret;
-	}
-
-	if (creds && ret) {
-		krb5_free_creds(context, creds);
-	}
-	if (server) {
-		krb5_free_principal(context, server);
-	}
-	if (me) {
-		krb5_free_principal(context, me);
-	}
-	if (impersonate_princ) {
-		krb5_free_principal(context, impersonate_princ);
-	}
-	if (ccache) {
-		krb5_cc_close(context, ccache);
-	}
-	krb5_free_context(context);
-
-	return ret;
-}
-
-/*
- * smb_krb5_principal_get_realm
- *
- * @brief Get realm of a principal
- *
- * @param[in] context		The krb5_context
- * @param[in] principal		The principal
- * @return pointer to the realm
- *
- */
-
-char *smb_krb5_principal_get_realm(krb5_context context,
-				   krb5_principal principal)
-{
-#ifdef HAVE_KRB5_PRINCIPAL_GET_REALM /* Heimdal */
-	return discard_const_p(char, krb5_principal_get_realm(context, principal));
-#elif defined(krb5_princ_realm) /* MIT */
-	krb5_data *realm;
-	realm = krb5_princ_realm(context, principal);
-	return discard_const_p(char, realm->data);
-#else
-	return NULL;
-#endif
-}
-
-/************************************************************************
- Routine to get the default realm from the kerberos credentials cache.
- Caller must free if the return value is not NULL.
-************************************************************************/
-
-static char *smb_krb5_get_default_realm_from_ccache(TALLOC_CTX *mem_ctx)
-{
-	char *realm = NULL;
-	krb5_context ctx = NULL;
-	krb5_ccache cc = NULL;
-	krb5_principal princ = NULL;
-
-	initialize_krb5_error_table();
-	if (krb5_init_context(&ctx)) {
-		return NULL;
-	}
-
-	DEBUG(5,("kerberos_get_default_realm_from_ccache: "
-		"Trying to read krb5 cache: %s\n",
-		krb5_cc_default_name(ctx)));
-	if (krb5_cc_default(ctx, &cc)) {
-		DEBUG(0,("kerberos_get_default_realm_from_ccache: "
-			"failed to read default cache\n"));
-		goto out;
-	}
-	if (krb5_cc_get_principal(ctx, cc, &princ)) {
-		DEBUG(0,("kerberos_get_default_realm_from_ccache: "
-			"failed to get default principal\n"));
-		goto out;
-	}
-
-#if defined(HAVE_KRB5_PRINCIPAL_GET_REALM)
-	realm = talloc_strdup(mem_ctx, krb5_principal_get_realm(ctx, princ));
-#elif defined(HAVE_KRB5_PRINC_REALM)
-	{
-		krb5_data *realm_data = krb5_princ_realm(ctx, princ);
-		realm = talloc_strndup(mem_ctx, realm_data->data, realm_data->length);
-	}
-#endif
-
-  out:
-
-	if (ctx) {
-		if (princ) {
-			krb5_free_principal(ctx, princ);
-		}
-		if (cc) {
-			krb5_cc_close(ctx, cc);
-		}
-		krb5_free_context(ctx);
-	}
-
-	return realm;
-}
-
-/************************************************************************
- Routine to get the realm from a given DNS name.
-************************************************************************/
-
-static char *smb_krb5_get_realm_from_hostname(TALLOC_CTX *mem_ctx,
-						const char *hostname)
-{
-#if defined(HAVE_KRB5_REALM_TYPE)
-	/* Heimdal. */
-	krb5_realm *realm_list = NULL;
-#else
-	/* MIT */
-	char **realm_list = NULL;
-#endif
-	char *realm = NULL;
-	krb5_error_code kerr;
-	krb5_context ctx = NULL;
-
-	initialize_krb5_error_table();
-	if (krb5_init_context(&ctx)) {
-		return NULL;
-	}
-
-	kerr = krb5_get_host_realm(ctx, hostname, &realm_list);
-	if (kerr != 0) {
-		DEBUG(3,("kerberos_get_realm_from_hostname %s: "
-			"failed %s\n",
-			hostname ? hostname : "(NULL)",
-			error_message(kerr) ));
-		goto out;
-	}
-
-	if (realm_list && realm_list[0]) {
-		realm = talloc_strdup(mem_ctx, realm_list[0]);
-	}
-
-  out:
-
-	if (ctx) {
-		if (realm_list) {
-			krb5_free_host_realm(ctx, realm_list);
-			realm_list = NULL;
-		}
-		krb5_free_context(ctx);
-		ctx = NULL;
-	}
-	return realm;
-}
-
-char *kerberos_get_principal_from_service_hostname(TALLOC_CTX *mem_ctx,
-						   const char *service,
-						   const char *remote_name)
-{
-	char *realm = NULL;
-	char *host = NULL;
-	char *principal;
-	host = strchr_m(remote_name, '.');
-	if (host) {
-		/* DNS name. */
-		realm = smb_krb5_get_realm_from_hostname(talloc_tos(),
-							 remote_name);
-	} else {
-		/* NetBIOS name - use our realm. */
-		realm = smb_krb5_get_default_realm_from_ccache(talloc_tos());
-	}
-
-	if (realm == NULL || *realm == '\0') {
-		realm = talloc_strdup(talloc_tos(), lp_realm());
-		if (!realm) {
-			return NULL;
-		}
-		DEBUG(3,("kerberos_get_principal_from_service_hostname: "
-			 "cannot get realm from, "
-			 "desthost %s or default ccache. Using default "
-			 "smb.conf realm %s\n",
-			 remote_name,
-			 realm));
-	}
-
-	principal = talloc_asprintf(mem_ctx,
-				    "%s/%s@%s",
-				    service, remote_name,
-				    realm);
-	TALLOC_FREE(realm);
-	return principal;
-}
-
-#else /* HAVE_KRB5 */
- /* this saves a few linking headaches */
- int cli_krb5_get_ticket(TALLOC_CTX *mem_ctx,
-			const char *principal, time_t time_offset,
-			DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
-			uint32_t extra_ap_opts,
-			const char *ccname, time_t *tgs_expire,
-			const char *impersonate_princ_s)
-{
-	 DEBUG(0,("NO KERBEROS SUPPORT\n"));
-	 return 1;
-}
-
-#endif /* HAVE_KRB5 */