Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3616 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_pam.c b/source3/winbindd/winbindd_pam.c
new file mode 100644
index 0000000..6c890c8
--- /dev/null
+++ b/source3/winbindd/winbindd_pam.c
@@ -0,0 +1,3616 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind daemon - pam auth functions
+
+   Copyright (C) Andrew Tridgell 2000
+   Copyright (C) Tim Potter 2001
+   Copyright (C) Andrew Bartlett 2001-2002
+   Copyright (C) Guenther Deschner 2005
+
+   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 "ntdomain.h"
+#include "winbindd.h"
+#include "libsmb/namequery.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "libcli/auth/pam_errors.h"
+#include "../librpc/gen_ndr/ndr_samr_c.h"
+#include "librpc/rpc/dcesrv_core.h"
+#include "librpc/gen_ndr/ndr_winbind.h"
+#include "rpc_client/cli_pipe.h"
+#include "rpc_client/cli_samr.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "rpc_client/cli_netlogon.h"
+#include "smb_krb5.h"
+#include "../libcli/security/security.h"
+#include "ads.h"
+#include "../librpc/gen_ndr/krb5pac.h"
+#include "passdb/machine_sid.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "auth/kerberos/pac_utils.h"
+#include "auth/gensec/gensec.h"
+#include "librpc/crypto/gse_krb5.h"
+#include "lib/afs/afs_funcs.h"
+#include "libsmb/samlogon_cache.h"
+#include "rpc_client/util_netlogon.h"
+#include "param/param.h"
+#include "messaging/messaging.h"
+#include "lib/util/string_wrappers.h"
+#include "lib/crypto/gnutls_helpers.h"
+
+#include "lib/crypto/gnutls_helpers.h"
+#include <gnutls/crypto.h>
+#include "lib/global_contexts.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+#define LOGON_KRB5_FAIL_CLOCK_SKEW	0x02000000
+
+static NTSTATUS append_info3_as_txt(TALLOC_CTX *mem_ctx,
+				    struct winbindd_response *resp,
+				    uint16_t validation_level,
+				    union netr_Validation *validation)
+{
+	struct netr_SamInfo3 *info3 = NULL;
+	char *ex = NULL;
+	uint32_t i;
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	status = map_validation_to_info3(frame,
+					 validation_level,
+					 validation,
+					 &info3);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto out;
+	}
+
+	resp->data.auth.info3.logon_time =
+		nt_time_to_unix(info3->base.logon_time);
+	resp->data.auth.info3.logoff_time =
+		nt_time_to_unix(info3->base.logoff_time);
+	resp->data.auth.info3.kickoff_time =
+		nt_time_to_unix(info3->base.kickoff_time);
+	resp->data.auth.info3.pass_last_set_time =
+		nt_time_to_unix(info3->base.last_password_change);
+	resp->data.auth.info3.pass_can_change_time =
+		nt_time_to_unix(info3->base.allow_password_change);
+	resp->data.auth.info3.pass_must_change_time =
+		nt_time_to_unix(info3->base.force_password_change);
+
+	resp->data.auth.info3.logon_count = info3->base.logon_count;
+	resp->data.auth.info3.bad_pw_count = info3->base.bad_password_count;
+
+	resp->data.auth.info3.user_rid = info3->base.rid;
+	resp->data.auth.info3.group_rid = info3->base.primary_gid;
+	sid_to_fstring(resp->data.auth.info3.dom_sid, info3->base.domain_sid);
+
+	resp->data.auth.info3.num_groups = info3->base.groups.count;
+	resp->data.auth.info3.user_flgs = info3->base.user_flags;
+
+	resp->data.auth.info3.acct_flags = info3->base.acct_flags;
+	resp->data.auth.info3.num_other_sids = info3->sidcount;
+
+	fstrcpy(resp->data.auth.info3.user_name,
+		info3->base.account_name.string);
+	fstrcpy(resp->data.auth.info3.full_name,
+		info3->base.full_name.string);
+	fstrcpy(resp->data.auth.info3.logon_script,
+		info3->base.logon_script.string);
+	fstrcpy(resp->data.auth.info3.profile_path,
+		info3->base.profile_path.string);
+	fstrcpy(resp->data.auth.info3.home_dir,
+		info3->base.home_directory.string);
+	fstrcpy(resp->data.auth.info3.dir_drive,
+		info3->base.home_drive.string);
+
+	fstrcpy(resp->data.auth.info3.logon_srv,
+		info3->base.logon_server.string);
+	fstrcpy(resp->data.auth.info3.logon_dom,
+		info3->base.logon_domain.string);
+
+	resp->data.auth.validation_level = validation_level;
+	if (validation_level == 6) {
+		fstrcpy(resp->data.auth.info6.dns_domainname,
+			validation->sam6->dns_domainname.string);
+		fstrcpy(resp->data.auth.info6.principal_name,
+			validation->sam6->principal_name.string);
+	}
+
+	ex = talloc_strdup(frame, "");
+	if (ex == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	for (i=0; i < info3->base.groups.count; i++) {
+		ex = talloc_asprintf_append_buffer(ex, "0x%08X:0x%08X\n",
+						   info3->base.groups.rids[i].rid,
+						   info3->base.groups.rids[i].attributes);
+		if (ex == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto out;
+		}
+	}
+
+	for (i=0; i < info3->sidcount; i++) {
+		struct dom_sid_buf sidbuf;
+
+		ex = talloc_asprintf_append_buffer(
+			ex,
+			"%s:0x%08X\n",
+			dom_sid_str_buf(info3->sids[i].sid, &sidbuf),
+			info3->sids[i].attributes);
+		if (ex == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto out;
+		}
+	}
+
+	resp->length += talloc_get_size(ex);
+	resp->extra_data.data = talloc_move(mem_ctx, &ex);
+
+	status = NT_STATUS_OK;
+out:
+	TALLOC_FREE(frame);
+	return status;
+}
+
+static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
+				    struct winbindd_response *resp,
+				    struct netr_SamInfo3 *info3)
+{
+	DATA_BLOB blob;
+	enum ndr_err_code ndr_err;
+
+	ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info3,
+				       (ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
+	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+		DEBUG(0,("append_info3_as_ndr: failed to append\n"));
+		return ndr_map_error2ntstatus(ndr_err);
+	}
+
+	resp->extra_data.data = blob.data;
+	resp->length += blob.length;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS append_unix_username(uint16_t validation_level,
+				     union netr_Validation  *validation,
+				     const char *name_domain,
+				     const char *name_user,
+				     TALLOC_CTX *mem_ctx,
+				     char **_unix_username)
+{
+	TALLOC_CTX *tmp_ctx = NULL;
+	const char *nt_username = NULL;
+	const char *nt_domain = NULL;
+	char *unix_username = NULL;
+	struct netr_SamBaseInfo *base_info = NULL;
+	NTSTATUS status;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* We've been asked to return the unix username, per
+	   'winbind use default domain' settings and the like */
+
+	switch (validation_level) {
+	case 3:
+		base_info = &validation->sam3->base;
+		break;
+	case 6:
+		base_info = &validation->sam6->base;
+		break;
+	default:
+		DBG_ERR("Invalid validation level %d\n", validation_level);
+		status = NT_STATUS_INTERNAL_ERROR;
+		goto out;
+	}
+
+	nt_domain = talloc_strdup(tmp_ctx, base_info->logon_domain.string);
+	if (!nt_domain) {
+		/* If the server didn't give us one, just use the one
+		 * we sent them */
+		nt_domain = name_domain;
+	}
+
+	nt_username = talloc_strdup(tmp_ctx, base_info->account_name.string);
+	if (!nt_username) {
+		/* If the server didn't give us one, just use the one
+		 * we sent them */
+		nt_username = name_user;
+	}
+
+	unix_username = fill_domain_username_talloc(tmp_ctx,
+						    nt_domain,
+						    nt_username,
+						    true);
+	if (unix_username == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	DBG_INFO("Setting unix username to [%s]\n", unix_username);
+
+	*_unix_username = talloc_move(mem_ctx, &unix_username);
+
+	status = NT_STATUS_OK;
+out:
+	TALLOC_FREE(tmp_ctx);
+
+	return status;
+}
+
+static NTSTATUS append_afs_token(uint16_t validation_level,
+				 union netr_Validation  *validation,
+				 const char *name_domain,
+				 const char *name_user,
+				 TALLOC_CTX *mem_ctx,
+				 DATA_BLOB *_blob)
+{
+	TALLOC_CTX *tmp_ctx = NULL;
+	char *afsname = NULL;
+	char *cell;
+	char *token;
+	struct netr_SamBaseInfo *base_info = NULL;
+	NTSTATUS status;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	switch (validation_level) {
+	case 3:
+		base_info = &validation->sam3->base;
+		break;
+	case 6:
+		base_info = &validation->sam6->base;
+		break;
+	default:
+		DBG_ERR("Invalid validation level %d\n", validation_level);
+		status = NT_STATUS_INTERNAL_ERROR;
+		goto out;
+	}
+
+	afsname = talloc_strdup(tmp_ctx, lp_afs_username_map());
+	if (afsname == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	afsname = talloc_string_sub(tmp_ctx,
+				    lp_afs_username_map(),
+				    "%D", name_domain);
+	afsname = talloc_string_sub(tmp_ctx, afsname,
+				    "%u", name_user);
+	afsname = talloc_string_sub(tmp_ctx, afsname,
+				    "%U", name_user);
+
+	{
+		struct dom_sid user_sid;
+		struct dom_sid_buf sidstr;
+
+		sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+		afsname = talloc_string_sub(
+			tmp_ctx,
+			afsname,
+			"%s",
+			dom_sid_str_buf(&user_sid, &sidstr));
+	}
+
+	if (afsname == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	if (!strlower_m(afsname)) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto out;
+	}
+
+	DEBUG(10, ("Generating token for user %s\n", afsname));
+
+	cell = strchr(afsname, '@');
+
+	if (cell == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto out;
+	}
+
+	*cell = '\0';
+	cell += 1;
+
+	token = afs_createtoken_str(afsname, cell);
+	if (token == NULL) {
+		status = NT_STATUS_OK;
+		goto out;
+	}
+
+	talloc_steal(mem_ctx, token);
+	*_blob = data_blob_string_const_null(token);
+
+	status = NT_STATUS_OK;
+out:
+	TALLOC_FREE(tmp_ctx);
+
+	return status;
+}
+
+NTSTATUS extra_data_to_sid_array(const char *group_sid,
+				TALLOC_CTX *mem_ctx,
+				struct wbint_SidArray **_sid_array)
+{
+	TALLOC_CTX *tmp_ctx = NULL;
+	struct wbint_SidArray *sid_array = NULL;
+	struct dom_sid *require_membership_of_sid = NULL;
+	uint32_t num_require_membership_of_sid = 0;
+	char *req_sid = NULL;
+	const char *p = NULL;
+	NTSTATUS status;
+
+	if (_sid_array == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	*_sid_array = NULL;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	sid_array = talloc_zero(tmp_ctx, struct wbint_SidArray);
+	if (sid_array == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+
+	if (!group_sid || !group_sid[0]) {
+		/* NO sid supplied, all users may access */
+		status = NT_STATUS_OK;
+		/*
+		 * Always return an allocated wbint_SidArray,
+		 * even if the array is empty.
+		 */
+		goto out;
+	}
+
+	num_require_membership_of_sid = 0;
+	require_membership_of_sid = NULL;
+	p = group_sid;
+
+	while (next_token_talloc(tmp_ctx, &p, &req_sid, ",")) {
+		struct dom_sid sid;
+
+		if (!string_to_sid(&sid, req_sid)) {
+			DBG_ERR("check_info3_in_group: could not parse %s "
+				"as a SID!\n", req_sid);
+			status = NT_STATUS_INVALID_PARAMETER;
+			goto fail;
+		}
+
+		status = add_sid_to_array(tmp_ctx, &sid,
+					  &require_membership_of_sid,
+					  &num_require_membership_of_sid);
+		if (!NT_STATUS_IS_OK(status)) {
+			DBG_ERR("add_sid_to_array failed\n");
+			goto fail;
+		}
+	}
+
+	sid_array->num_sids = num_require_membership_of_sid;
+	sid_array->sids = talloc_move(sid_array, &require_membership_of_sid);
+
+	status = NT_STATUS_OK;
+out:
+	*_sid_array = talloc_move(mem_ctx, &sid_array);
+
+fail:
+	TALLOC_FREE(tmp_ctx);
+
+	return status;
+}
+
+static NTSTATUS check_info3_in_group(struct netr_SamInfo3 *info3,
+				     struct wbint_SidArray *sid_array)
+/**
+ * Check whether a user belongs to a group or list of groups.
+ *
+ * @param mem_ctx talloc memory context.
+ * @param info3 user information, including group membership info.
+ * @param group_sid One or more groups , separated by commas.
+ *
+ * @return NT_STATUS_OK on success,
+ *    NT_STATUS_LOGON_FAILURE if the user does not belong,
+ *    or other NT_STATUS_IS_ERR(status) for other kinds of failure.
+ */
+{
+	size_t i;
+	struct security_token *token;
+	NTSTATUS status;
+
+	/* Parse the 'required group' SID */
+
+	if (sid_array == NULL || sid_array->num_sids == 0) {
+		/* NO sid supplied, all users may access */
+		return NT_STATUS_OK;
+	}
+
+	/*
+	 * This is a limited-use security_token for the purpose of
+	 * checking the SID list below, so no claims need to be added
+	 * and se_access_check() will never run.
+	 */
+	token = security_token_initialise(talloc_tos(),
+					  CLAIMS_EVALUATION_INVALID_STATE);
+	if (token == NULL) {
+		DEBUG(0, ("talloc failed\n"));
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = sid_array_from_info3(token, info3,
+				      &token->sids,
+				      &token->num_sids,
+				      true);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (!NT_STATUS_IS_OK(status = add_aliases(get_global_sam_sid(),
+						  token))
+	    || !NT_STATUS_IS_OK(status = add_aliases(&global_sid_Builtin,
+						     token))) {
+		DEBUG(3, ("could not add aliases: %s\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	security_token_debug(DBGC_CLASS, 10, token);
+
+	for (i=0; i<sid_array->num_sids; i++) {
+		struct dom_sid_buf buf;
+		DEBUG(10, ("Checking SID %s\n",
+			   dom_sid_str_buf(&sid_array->sids[i],
+					   &buf)));
+		if (nt_token_check_sid(&sid_array->sids[i],
+				       token)) {
+			DEBUG(10, ("Access ok\n"));
+			return NT_STATUS_OK;
+		}
+	}
+
+	/* Do not distinguish this error from a wrong username/pw */
+
+	return NT_STATUS_LOGON_FAILURE;
+}
+
+struct winbindd_domain *find_auth_domain(uint8_t flags,
+					 const char *domain_name)
+{
+	struct winbindd_domain *domain;
+
+	if (IS_DC) {
+		domain = find_domain_from_name_noinit(domain_name);
+		if (domain == NULL) {
+			DEBUG(3, ("Authentication for domain [%s] refused "
+				  "as it is not a trusted domain\n",
+				  domain_name));
+			return NULL;
+		}
+
+		if (domain->secure_channel_type != SEC_CHAN_NULL) {
+			return domain;
+		}
+
+		return domain->routing_domain;
+	}
+
+	if (strequal(domain_name, get_global_sam_name())) {
+		return find_domain_from_name_noinit(domain_name);
+	}
+
+	if (lp_winbind_use_krb5_enterprise_principals()) {
+		/*
+		 * If we use enterprise principals
+		 * we always go through our primary domain
+		 * and follow the WRONG_REALM replies.
+		 */
+		flags &= ~WBFLAG_PAM_CONTACT_TRUSTDOM;
+	}
+
+	/* we can auth against trusted domains */
+	if (flags & WBFLAG_PAM_CONTACT_TRUSTDOM) {
+		domain = find_domain_from_name_noinit(domain_name);
+		if (domain == NULL) {
+			DEBUG(3, ("Authentication for domain [%s] skipped "
+				  "as it is not a trusted domain\n",
+				  domain_name));
+		} else {
+			return domain;
+		}
+	}
+
+	return find_our_domain();
+}
+
+static NTSTATUS get_password_policy(struct winbindd_domain *domain,
+				    TALLOC_CTX *mem_ctx,
+				    struct samr_DomInfo1 **_policy)
+{
+	NTSTATUS status;
+	struct samr_DomInfo1 *policy = NULL;
+
+	if ( !winbindd_can_contact_domain( domain ) ) {
+		DBG_INFO("No inbound trust to contact domain %s\n",
+			 domain->name);
+		return NT_STATUS_NOT_SUPPORTED;
+	}
+
+	policy = talloc_zero(mem_ctx, struct samr_DomInfo1);
+	if (policy == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = wb_cache_password_policy(domain, mem_ctx, policy);
+	if (NT_STATUS_IS_ERR(status)) {
+		TALLOC_FREE(policy);
+		return status;
+	}
+
+	*_policy = talloc_move(mem_ctx, &policy);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS get_max_bad_attempts_from_lockout_policy(struct winbindd_domain *domain,
+							 TALLOC_CTX *mem_ctx,
+							 uint16_t *lockout_threshold)
+{
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+	struct samr_DomInfo12 lockout_policy;
+
+	*lockout_threshold = 0;
+
+	status = wb_cache_lockout_policy(domain, mem_ctx, &lockout_policy);
+	if (NT_STATUS_IS_ERR(status)) {
+		return status;
+	}
+
+	*lockout_threshold = lockout_policy.lockout_threshold;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS get_pwd_properties(struct winbindd_domain *domain,
+				   TALLOC_CTX *mem_ctx,
+				   uint32_t *password_properties)
+{
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+	struct samr_DomInfo1 password_policy;
+
+	*password_properties = 0;
+
+	status = wb_cache_password_policy(domain, mem_ctx, &password_policy);
+	if (NT_STATUS_IS_ERR(status)) {
+		return status;
+	}
+
+	*password_properties = password_policy.password_properties;
+
+	return NT_STATUS_OK;
+}
+
+#ifdef HAVE_KRB5
+
+static const char *generate_krb5_ccache(TALLOC_CTX *mem_ctx,
+					const char *type,
+					uid_t uid,
+					const char **user_ccache_file)
+{
+	/* accept FILE and WRFILE as krb5_cc_type from the client and then
+	 * build the full ccname string based on the user's uid here -
+	 * Guenther*/
+
+	const char *gen_cc = NULL;
+
+	if (uid != -1) {
+		if (strequal(type, "FILE")) {
+			gen_cc = talloc_asprintf(
+				mem_ctx, "FILE:/tmp/krb5cc_%d", uid);
+		}
+		if (strequal(type, "WRFILE")) {
+			gen_cc = talloc_asprintf(
+				mem_ctx, "WRFILE:/tmp/krb5cc_%d", uid);
+		}
+		if (strequal(type, "KEYRING")) {
+			gen_cc = talloc_asprintf(
+				mem_ctx, "KEYRING:persistent:%d", uid);
+		}
+		if (strequal(type, "KCM")) {
+			gen_cc = talloc_asprintf(mem_ctx,
+						 "KCM:%d",
+						 uid);
+		}
+
+		if (strnequal(type, "FILE:/", 6) ||
+		    strnequal(type, "WRFILE:/", 8) ||
+		    strnequal(type, "DIR:/", 5)) {
+
+			/* we allow only one "%u" substitution */
+
+			char *p;
+
+			p = strchr(type, '%');
+			if (p != NULL) {
+
+				p++;
+
+				if (p != NULL && *p == 'u' && strchr(p, '%') == NULL) {
+					char uid_str[sizeof("18446744073709551615")];
+
+					snprintf(uid_str, sizeof(uid_str), "%u", uid);
+
+					gen_cc = talloc_string_sub2(mem_ctx,
+							type,
+							"%u",
+							uid_str,
+							/* remove_unsafe_characters */
+							false,
+							/* replace_once */
+							true,
+							/* allow_trailing_dollar */
+							false);
+				}
+			}
+		}
+	}
+
+	*user_ccache_file = gen_cc;
+
+	if (gen_cc == NULL) {
+		gen_cc = talloc_strdup(mem_ctx, "MEMORY:winbindd_pam_ccache");
+	}
+  	if (gen_cc == NULL) {
+		DEBUG(0,("out of memory\n"));
+		return NULL;
+	}
+
+	DEBUG(10, ("using ccache: %s%s\n", gen_cc,
+		   (*user_ccache_file == NULL) ? " (internal)":""));
+
+	return gen_cc;
+}
+
+#endif
+
+uid_t get_uid_from_request(struct winbindd_request *request)
+{
+	uid_t uid;
+
+	uid = request->data.auth.uid;
+
+	if (uid == (uid_t)-1) {
+		DEBUG(1,("invalid uid: '%u'\n", (unsigned int)uid));
+		return -1;
+	}
+	return uid;
+}
+
+/**********************************************************************
+ Authenticate a user with a clear text password using Kerberos and fill up
+ ccache if required
+ **********************************************************************/
+
+static NTSTATUS winbindd_raw_kerberos_login(TALLOC_CTX *mem_ctx,
+					    struct winbindd_domain *domain,
+					    const char *user,
+					    const char *pass,
+					    const char *krb5_cc_type,
+					    uid_t uid,
+					    struct netr_SamInfo6 **info6,
+					    const char **_krb5ccname)
+{
+#ifdef HAVE_KRB5
+	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+	krb5_error_code krb5_ret;
+	const char *cc = NULL;
+	const char *principal_s = NULL;
+	char *realm = NULL;
+	char *name_namespace = NULL;
+	char *name_domain = NULL;
+	char *name_user = NULL;
+	time_t ticket_lifetime = 0;
+	time_t renewal_until = 0;
+	time_t time_offset = 0;
+	const char *user_ccache_file;
+	struct PAC_LOGON_INFO *logon_info = NULL;
+	struct PAC_UPN_DNS_INFO *upn_dns_info = NULL;
+	struct PAC_DATA *pac_data = NULL;
+	struct PAC_DATA_CTR *pac_data_ctr = NULL;
+	const char *local_service;
+	uint32_t i;
+	struct netr_SamInfo6 *info6_copy = NULL;
+	char *canon_principal = NULL;
+	char *canon_realm = NULL;
+	bool ok;
+
+	*info6 = NULL;
+
+	if (domain->alt_name == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (_krb5ccname != NULL) {
+		*_krb5ccname = NULL;
+	}
+
+	/* 1st step:
+	 * prepare a krb5_cc_cache string for the user */
+
+	if (uid == -1) {
+		DEBUG(0,("no valid uid\n"));
+	}
+
+	cc = generate_krb5_ccache(mem_ctx,
+				  krb5_cc_type,
+				  uid,
+				  &user_ccache_file);
+	if (cc == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+
+	/* 2nd step:
+	 * get kerberos properties */
+
+	if (domain->backend_data.ads_conn != NULL) {
+		time_offset = domain->backend_data.ads_conn->auth.time_offset;
+	}
+
+
+	/* 3rd step:
+	 * do kerberos auth and setup ccache as the user */
+
+	ok = parse_domain_user(mem_ctx,
+			user,
+			&name_namespace,
+			&name_domain,
+			&name_user);
+	if (!ok) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	realm = talloc_strdup(mem_ctx, domain->alt_name);
+	if (realm == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (!strupper_m(realm)) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (lp_winbind_use_krb5_enterprise_principals() &&
+	    name_namespace[0] != '\0')
+	{
+		principal_s = talloc_asprintf(mem_ctx,
+					      "%s@%s@%s",
+					      name_user,
+					      name_namespace,
+					      realm);
+	} else {
+		principal_s = talloc_asprintf(mem_ctx,
+					      "%s@%s",
+					      name_user,
+					      realm);
+	}
+	if (principal_s == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	local_service = talloc_asprintf(mem_ctx, "%s$@%s",
+					lp_netbios_name(), lp_realm());
+	if (local_service == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+
+	/* if this is a user ccache, we need to act as the user to let the krb5
+	 * library handle the chown, etc. */
+
+	/************************ ENTERING NON-ROOT **********************/
+
+	if (user_ccache_file != NULL) {
+		set_effective_uid(uid);
+		DEBUG(10,("winbindd_raw_kerberos_login: uid is %d\n", uid));
+	}
+
+	result = kerberos_return_pac(mem_ctx,
+				     principal_s,
+				     pass,
+				     time_offset,
+				     &ticket_lifetime,
+				     &renewal_until,
+				     cc,
+				     true,
+				     true,
+				     WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
+				     NULL,
+				     local_service,
+				     &canon_principal,
+				     &canon_realm,
+				     &pac_data_ctr);
+	if (user_ccache_file != NULL) {
+		gain_root_privilege();
+	}
+
+	/************************ RETURNED TO ROOT **********************/
+
+	if (!NT_STATUS_IS_OK(result)) {
+		goto failed;
+	}
+
+	if (pac_data_ctr == NULL) {
+		goto failed;
+	}
+
+	pac_data = pac_data_ctr->pac_data;
+	if (pac_data == NULL) {
+		goto failed;
+	}
+
+	for (i=0; i < pac_data->num_buffers; i++) {
+
+		if (pac_data->buffers[i].type == PAC_TYPE_LOGON_INFO) {
+			logon_info = pac_data->buffers[i].info->logon_info.info;
+			continue;
+		}
+
+		if (pac_data->buffers[i].type == PAC_TYPE_UPN_DNS_INFO) {
+			upn_dns_info = &pac_data->buffers[i].info->upn_dns_info;
+			continue;
+		}
+	}
+
+	if (logon_info == NULL) {
+		DEBUG(10,("Missing logon_info in ticket of %s\n",
+			principal_s));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	DEBUG(10,("winbindd_raw_kerberos_login: winbindd validated ticket of %s\n",
+		principal_s));
+
+	result = create_info6_from_pac(mem_ctx, logon_info,
+				       upn_dns_info, &info6_copy);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto failed;
+	}
+
+	/* if we had a user's ccache then return that string for the pam
+	 * environment */
+
+	if (user_ccache_file != NULL) {
+
+		if (_krb5ccname != NULL) {
+			*_krb5ccname = talloc_steal(mem_ctx, user_ccache_file);
+		}
+
+		result = add_ccache_to_list(principal_s,
+					    cc,
+					    user,
+					    pass,
+					    realm,
+					    uid,
+					    time(NULL),
+					    ticket_lifetime,
+					    renewal_until,
+					    false,
+					    canon_principal,
+					    canon_realm);
+
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("winbindd_raw_kerberos_login: failed to add ccache to list: %s\n",
+				nt_errstr(result)));
+		}
+	} else {
+
+		/* need to delete the memory cred cache, it is not used anymore */
+
+		krb5_ret = ads_kdestroy(cc);
+		if (krb5_ret) {
+			DEBUG(3,("winbindd_raw_kerberos_login: "
+				 "could not destroy krb5 credential cache: "
+				 "%s\n", error_message(krb5_ret)));
+		}
+
+	}
+	*info6 = info6_copy;
+	return NT_STATUS_OK;
+
+failed:
+	/*
+	 * Do not delete an existing valid credential cache, if the user
+	 * e.g. enters a wrong password
+	 */
+	if ((strequal(krb5_cc_type, "FILE") || strequal(krb5_cc_type, "WRFILE"))
+	    && user_ccache_file != NULL) {
+		return result;
+	}
+
+	/* we could have created a new credential cache with a valid tgt in it
+	 * but we weren't able to get or verify the service ticket for this
+	 * local host and therefore didn't get the PAC, we need to remove that
+	 * cache entirely now */
+
+	krb5_ret = ads_kdestroy(cc);
+	if (krb5_ret) {
+		DEBUG(3,("winbindd_raw_kerberos_login: "
+			 "could not destroy krb5 credential cache: "
+			 "%s\n", error_message(krb5_ret)));
+	}
+
+	if (!NT_STATUS_IS_OK(remove_ccache(user))) {
+		DEBUG(3,("winbindd_raw_kerberos_login: "
+			  "could not remove ccache for user %s\n",
+			user));
+	}
+
+	return result;
+#else
+	return NT_STATUS_NOT_SUPPORTED;
+#endif /* HAVE_KRB5 */
+}
+
+/****************************************************************
+****************************************************************/
+
+bool check_request_flags(uint32_t flags)
+{
+	uint32_t flags_edata = WBFLAG_PAM_AFS_TOKEN |
+			       WBFLAG_PAM_INFO3_TEXT |
+			       WBFLAG_PAM_INFO3_NDR;
+
+	if ( ( (flags & flags_edata) == WBFLAG_PAM_AFS_TOKEN) ||
+	     ( (flags & flags_edata) == WBFLAG_PAM_INFO3_NDR) ||
+	     ( (flags & flags_edata) == WBFLAG_PAM_INFO3_TEXT)||
+	      !(flags & flags_edata) ) {
+		return true;
+	}
+
+	DEBUG(1, ("check_request_flags: invalid request flags[0x%08X]\n",
+		  flags));
+
+	return false;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS append_auth_data(TALLOC_CTX *mem_ctx,
+			  struct winbindd_response *resp,
+			  uint32_t request_flags,
+			  uint16_t validation_level,
+			  union netr_Validation *validation,
+			  const char *name_domain,
+			  const char *name_user)
+{
+	struct netr_SamInfo3 *info3 = NULL;
+	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+
+	result = map_validation_to_info3(talloc_tos(),
+					 validation_level,
+					 validation,
+					 &info3);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto out;
+	}
+
+	if (request_flags & WBFLAG_PAM_USER_SESSION_KEY) {
+		memcpy(resp->data.auth.user_session_key,
+		       info3->base.key.key,
+		       sizeof(resp->data.auth.user_session_key)
+		       /* 16 */);
+	}
+
+	if (request_flags & WBFLAG_PAM_LMKEY) {
+		memcpy(resp->data.auth.first_8_lm_hash,
+		       info3->base.LMSessKey.key,
+		       sizeof(resp->data.auth.first_8_lm_hash)
+		       /* 8 */);
+	}
+
+	if (request_flags & WBFLAG_PAM_UNIX_NAME) {
+		char *unix_username = NULL;
+		result = append_unix_username(validation_level,
+					      validation,
+					      name_domain,
+					      name_user,
+					      mem_ctx,
+					      &unix_username);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("Failed to append Unix Username: %s\n",
+				nt_errstr(result)));
+			goto out;
+		}
+		fstrcpy(resp->data.auth.unix_username, unix_username);
+		TALLOC_FREE(unix_username);
+	}
+
+	/* currently, anything from here on potentially overwrites extra_data. */
+
+	if (request_flags & WBFLAG_PAM_INFO3_NDR) {
+		result = append_info3_as_ndr(mem_ctx, resp, info3);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("Failed to append INFO3 (NDR): %s\n",
+				nt_errstr(result)));
+			goto out;
+		}
+	}
+
+	if (request_flags & WBFLAG_PAM_INFO3_TEXT) {
+		result = append_info3_as_txt(mem_ctx, resp,
+					     validation_level,
+					     validation);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
+				nt_errstr(result)));
+			goto out;
+		}
+	}
+
+	if (request_flags & WBFLAG_PAM_AFS_TOKEN) {
+		DATA_BLOB blob = data_blob_null;
+		result = append_afs_token(validation_level,
+					  validation,
+					  name_domain,
+					  name_user,
+					  mem_ctx,
+					  &blob);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("Failed to append AFS token: %s\n",
+				nt_errstr(result)));
+			goto out;
+		}
+		resp->extra_data.data = blob.data;
+		resp->length += blob.length;
+	}
+
+	result = NT_STATUS_OK;
+out:
+	TALLOC_FREE(info3);
+	return result;
+}
+
+static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
+					      bool krb5_auth,
+					      const char *user,
+					      const char *pass,
+					      const char *krb5_cc_type,
+					      uid_t uid,
+					      TALLOC_CTX *mem_ctx,
+					      uint16_t *_validation_level,
+					      union netr_Validation **_validation,
+					      const char **_krb5ccname)
+{
+	TALLOC_CTX *tmp_ctx = NULL;
+	NTSTATUS result = NT_STATUS_LOGON_FAILURE;
+	uint16_t max_allowed_bad_attempts;
+	char *name_namespace = NULL;
+	char *name_domain = NULL;
+	char *name_user = NULL;
+	struct dom_sid sid;
+	enum lsa_SidType type;
+	uchar new_nt_pass[NT_HASH_LEN];
+	const uint8_t *cached_nt_pass;
+	const uint8_t *cached_salt;
+	struct netr_SamInfo3 *my_info3;
+	time_t kickoff_time, must_change_time;
+	bool password_good = false;
+	bool ok;
+#ifdef HAVE_KRB5
+	struct winbindd_tdc_domain *tdc_domain = NULL;
+#endif
+
+	if (_validation == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	*_validation = NULL;
+
+	if (_krb5ccname != NULL) {
+		*_krb5ccname = NULL;
+	}
+
+	DEBUG(10,("winbindd_dual_pam_auth_cached\n"));
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* Parse domain and username */
+
+	ok = parse_domain_user(tmp_ctx,
+			user,
+			&name_namespace,
+			&name_domain,
+			&name_user);
+	if (!ok) {
+		DBG_DEBUG("parse_domain_user failed\n");
+		result = NT_STATUS_NO_SUCH_USER;
+		goto out;
+	}
+
+	if (!lookup_cached_name(name_namespace,
+				name_domain,
+				name_user,
+				&sid,
+				&type)) {
+		DEBUG(10,("winbindd_dual_pam_auth_cached: no such user in the cache\n"));
+		result = NT_STATUS_NO_SUCH_USER;
+		goto out;
+	}
+
+	if (type != SID_NAME_USER) {
+		DEBUG(10,("winbindd_dual_pam_auth_cached: not a user (%s)\n", sid_type_lookup(type)));
+		result = NT_STATUS_LOGON_FAILURE;
+		goto out;
+	}
+
+	result = winbindd_get_creds(domain,
+				    tmp_ctx,
+				    &sid,
+				    &my_info3,
+				    &cached_nt_pass,
+				    &cached_salt);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get creds: %s\n", nt_errstr(result)));
+		goto out;
+	}
+
+	E_md4hash(pass, new_nt_pass);
+
+	dump_data_pw("new_nt_pass", new_nt_pass, NT_HASH_LEN);
+	dump_data_pw("cached_nt_pass", cached_nt_pass, NT_HASH_LEN);
+	if (cached_salt) {
+		dump_data_pw("cached_salt", cached_salt, NT_HASH_LEN);
+	}
+
+	if (cached_salt) {
+		/* In this case we didn't store the nt_hash itself,
+		   but the MD5 combination of salt + nt_hash. */
+		uchar salted_hash[NT_HASH_LEN];
+		gnutls_hash_hd_t hash_hnd = NULL;
+		int rc;
+
+		rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
+		if (rc < 0) {
+			result = gnutls_error_to_ntstatus(
+					rc, NT_STATUS_HASH_NOT_SUPPORTED);
+			goto out;
+		}
+
+		rc = gnutls_hash(hash_hnd, cached_salt, 16);
+		if (rc < 0) {
+			gnutls_hash_deinit(hash_hnd, NULL);
+			result = gnutls_error_to_ntstatus(
+					rc, NT_STATUS_HASH_NOT_SUPPORTED);
+			goto out;
+		}
+		rc = gnutls_hash(hash_hnd, new_nt_pass, 16);
+		if (rc < 0) {
+			gnutls_hash_deinit(hash_hnd, NULL);
+			result = gnutls_error_to_ntstatus(
+					rc, NT_STATUS_HASH_NOT_SUPPORTED);
+			goto out;
+		}
+		gnutls_hash_deinit(hash_hnd, salted_hash);
+
+		password_good = mem_equal_const_time(cached_nt_pass, salted_hash,
+						     NT_HASH_LEN);
+	} else {
+		/* Old cached cred - direct store of nt_hash (bad bad bad !). */
+		password_good = mem_equal_const_time(cached_nt_pass, new_nt_pass,
+						     NT_HASH_LEN);
+	}
+
+	if (password_good) {
+
+		/* User *DOES* know the password, update logon_time and reset
+		 * bad_pw_count */
+
+		my_info3->base.user_flags |= NETLOGON_CACHED_ACCOUNT;
+
+		if (my_info3->base.acct_flags & ACB_AUTOLOCK) {
+			result = NT_STATUS_ACCOUNT_LOCKED_OUT;
+			goto out;
+		}
+
+		if (my_info3->base.acct_flags & ACB_DISABLED) {
+			result = NT_STATUS_ACCOUNT_DISABLED;
+			goto out;
+		}
+
+		if (my_info3->base.acct_flags & ACB_WSTRUST) {
+			result = NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
+			goto out;
+		}
+
+		if (my_info3->base.acct_flags & ACB_SVRTRUST) {
+			result = NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
+			goto out;
+		}
+
+		if (my_info3->base.acct_flags & ACB_DOMTRUST) {
+			result = NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
+			goto out;
+		}
+
+		if (!(my_info3->base.acct_flags & ACB_NORMAL)) {
+			DEBUG(0,("winbindd_dual_pam_auth_cached: what's wrong with that one?: 0x%08x\n",
+				my_info3->base.acct_flags));
+			result = NT_STATUS_LOGON_FAILURE;
+			goto out;
+		}
+
+		kickoff_time = nt_time_to_unix(my_info3->base.kickoff_time);
+		if (kickoff_time != 0 && time(NULL) > kickoff_time) {
+			result = NT_STATUS_ACCOUNT_EXPIRED;
+			goto out;
+		}
+
+		must_change_time = nt_time_to_unix(my_info3->base.force_password_change);
+		if (must_change_time != 0 && must_change_time < time(NULL)) {
+			/* we allow grace logons when the password has expired */
+			my_info3->base.user_flags |= NETLOGON_GRACE_LOGON;
+			/* return NT_STATUS_PASSWORD_EXPIRED; */
+			goto success;
+		}
+
+#ifdef HAVE_KRB5
+		if ((krb5_auth) &&
+		    ((tdc_domain = wcache_tdc_fetch_domain(tmp_ctx, name_domain)) != NULL) &&
+		    ((tdc_domain->trust_type & LSA_TRUST_TYPE_UPLEVEL) ||
+		    /* used to cope with the case winbindd starting without network. */
+		    !strequal(tdc_domain->domain_name, tdc_domain->dns_name))) {
+			const char *cc = NULL;
+			char *realm = NULL;
+			const char *principal_s = NULL;
+			const char *user_ccache_file;
+
+			if (domain->alt_name == NULL) {
+				result = NT_STATUS_INVALID_PARAMETER;
+				goto out;
+			}
+
+			if (uid == -1) {
+				DEBUG(0,("winbindd_dual_pam_auth_cached: invalid uid\n"));
+				result = NT_STATUS_INVALID_PARAMETER;
+				goto out;
+			}
+
+			cc = generate_krb5_ccache(tmp_ctx,
+						  krb5_cc_type,
+						  uid,
+						  &user_ccache_file);
+			if (cc == NULL) {
+				result = NT_STATUS_NO_MEMORY;
+				goto out;
+			}
+
+			realm = talloc_strdup(tmp_ctx, domain->alt_name);
+			if (realm == NULL) {
+				result = NT_STATUS_NO_MEMORY;
+				goto out;
+			}
+
+			if (!strupper_m(realm)) {
+				result = NT_STATUS_INVALID_PARAMETER;
+				goto out;
+			}
+
+			principal_s = talloc_asprintf(tmp_ctx, "%s@%s", name_user, realm);
+			if (principal_s == NULL) {
+				result = NT_STATUS_NO_MEMORY;
+				goto out;
+			}
+
+			if (user_ccache_file != NULL) {
+
+				if (_krb5ccname != NULL) {
+					*_krb5ccname = talloc_move(mem_ctx,
+							&user_ccache_file);
+				}
+
+				result = add_ccache_to_list(principal_s,
+							    cc,
+							    user,
+							    pass,
+							    realm,
+							    uid,
+							    time(NULL),
+							    time(NULL) + lp_winbind_cache_time(),
+							    time(NULL) + WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
+							    true,
+							    principal_s,
+							    realm);
+
+				if (!NT_STATUS_IS_OK(result)) {
+					DEBUG(10,("winbindd_dual_pam_auth_cached: failed "
+						"to add ccache to list: %s\n",
+						nt_errstr(result)));
+				}
+			}
+		}
+#endif /* HAVE_KRB5 */
+ success:
+		/* FIXME: we possibly should handle logon hours as well (does xp when
+		 * offline?) see auth/auth_sam.c:sam_account_ok for details */
+
+		unix_to_nt_time(&my_info3->base.logon_time, time(NULL));
+		my_info3->base.bad_password_count = 0;
+
+		result = winbindd_update_creds_by_info3(domain,
+							user,
+							pass,
+							my_info3);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(1,("winbindd_dual_pam_auth_cached: failed to update creds: %s\n",
+				nt_errstr(result)));
+			goto out;
+		}
+
+		result = map_info3_to_validation(mem_ctx,
+						 my_info3,
+						 _validation_level,
+						 _validation);
+		if (!NT_STATUS_IS_OK(result)) {
+			DBG_ERR("map_info3_to_validation failed: %s\n",
+				nt_errstr(result));
+			goto out;
+		}
+
+		result = NT_STATUS_OK;
+		goto out;
+	}
+
+	/* User does *NOT* know the correct password, modify info3 accordingly, but only if online */
+	if (domain->online == false) {
+		goto failed;
+	}
+
+	/* failure of this is not critical */
+	result = get_max_bad_attempts_from_lockout_policy(domain, tmp_ctx, &max_allowed_bad_attempts);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get max_allowed_bad_attempts. "
+			  "Won't be able to honour account lockout policies\n"));
+	}
+
+	/* increase counter */
+	my_info3->base.bad_password_count++;
+
+	if (max_allowed_bad_attempts == 0) {
+		goto failed;
+	}
+
+	/* lockout user */
+	if (my_info3->base.bad_password_count >= max_allowed_bad_attempts) {
+
+		uint32_t password_properties;
+
+		result = get_pwd_properties(domain, tmp_ctx, &password_properties);
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get password properties.\n"));
+		}
+
+		if ((my_info3->base.rid != DOMAIN_RID_ADMINISTRATOR) ||
+		    (password_properties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
+			my_info3->base.acct_flags |= ACB_AUTOLOCK;
+		}
+	}
+
+failed:
+	result = winbindd_update_creds_by_info3(domain, user, NULL, my_info3);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(0,("winbindd_dual_pam_auth_cached: failed to update creds %s\n",
+			nt_errstr(result)));
+	}
+
+	result = NT_STATUS_LOGON_FAILURE;
+
+out:
+	TALLOC_FREE(tmp_ctx);
+
+	return result;
+}
+
+static NTSTATUS winbindd_dual_pam_auth_kerberos(struct winbindd_domain *domain,
+						const char *user,
+						const char *pass,
+						const char *krb5_cc_type,
+						uid_t uid,
+						TALLOC_CTX *mem_ctx,
+						uint16_t *_validation_level,
+						union netr_Validation **_validation,
+						const char **_krb5ccname)
+{
+	struct netr_SamInfo6 *info6 = NULL;
+	struct winbindd_domain *contact_domain;
+	char *name_namespace = NULL;
+	char *name_domain = NULL;
+	char *name_user = NULL;
+	NTSTATUS result;
+	bool ok;
+
+	DEBUG(10,("winbindd_dual_pam_auth_kerberos\n"));
+
+	/* Parse domain and username */
+
+	ok = parse_domain_user(mem_ctx,
+			       user,
+			       &name_namespace,
+			       &name_domain,
+			       &name_user);
+	if (!ok) {
+		result = NT_STATUS_INVALID_PARAMETER;
+		goto done;
+	}
+
+	/* what domain should we contact? */
+
+	if (lp_winbind_use_krb5_enterprise_principals()) {
+		contact_domain = find_auth_domain(0, name_namespace);
+	} else {
+		contact_domain = find_domain_from_name(name_namespace);
+	}
+	if (contact_domain == NULL) {
+		DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
+			  user, name_domain, name_user, name_namespace));
+		result = NT_STATUS_NO_SUCH_USER;
+		goto done;
+	}
+
+	if (contact_domain->initialized &&
+	    contact_domain->active_directory) {
+	    	goto try_login;
+	}
+
+	if (!contact_domain->initialized) {
+		init_dc_connection(contact_domain, false);
+	}
+
+	if (!contact_domain->active_directory) {
+		DEBUG(3,("krb5 auth requested but domain (%s) is not Active Directory\n",
+		      contact_domain->name));
+		return NT_STATUS_INVALID_LOGON_TYPE;
+	}
+try_login:
+	result = winbindd_raw_kerberos_login(
+		mem_ctx,
+		contact_domain,
+		user,
+		pass,
+		krb5_cc_type,
+		uid,
+		&info6,
+		_krb5ccname);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto done;
+	}
+
+	result = map_info6_to_validation(mem_ctx,
+					 info6,
+					 _validation_level,
+					 _validation);
+	TALLOC_FREE(info6);
+	if (!NT_STATUS_IS_OK(result)) {
+		DBG_ERR("map_info6_to_validation failed: %s\n",
+			nt_errstr(result));
+	}
+
+done:
+	return result;
+}
+
+static NTSTATUS winbindd_dual_auth_passdb(TALLOC_CTX *mem_ctx,
+					  uint32_t logon_parameters,
+					  const char *domain,
+					  const char *user,
+					  const uint64_t logon_id,
+					  const char *client_name,
+					  const int client_pid,
+					  const DATA_BLOB *challenge,
+					  const DATA_BLOB *lm_resp,
+					  const DATA_BLOB *nt_resp,
+					  const struct tsocket_address *remote,
+					  const struct tsocket_address *local,
+					  bool interactive,
+					  uint8_t *pauthoritative,
+					  struct netr_SamInfo3 **pinfo3)
+{
+	struct auth_context *auth_context;
+	struct auth_serversupplied_info *server_info;
+	struct auth_usersupplied_info *user_info = NULL;
+	struct netr_SamInfo3 *info3;
+	NTSTATUS status;
+	bool ok;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	/*
+	 * We are authoritative by default
+	 */
+	*pauthoritative = 1;
+
+	status = make_user_info(frame, &user_info, user, user, domain, domain,
+				lp_netbios_name(), remote, local,
+				"winbind",
+				lm_resp, nt_resp, NULL, NULL,
+				NULL, AUTH_PASSWORD_RESPONSE);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(10, ("make_user_info failed: %s\n", nt_errstr(status)));
+		TALLOC_FREE(frame);
+		return status;
+	}
+
+	user_info->logon_parameters = logon_parameters;
+	user_info->logon_id = logon_id;
+	user_info->auth_description = talloc_asprintf(
+		frame, "PASSDB, %s, %d", client_name, client_pid);
+	if (user_info->auth_description == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* We don't want to come back to winbindd or to do PAM account checks */
+	user_info->flags |= USER_INFO_INFO3_AND_NO_AUTHZ;
+
+	if (interactive) {
+		user_info->flags |= USER_INFO_INTERACTIVE_LOGON;
+	}
+
+	status = make_auth3_context_for_winbind(frame, &auth_context);
+	if (!NT_STATUS_IS_OK(status)) {
+		DBG_ERR("make_auth3_context_for_winbind failed: %s\n",
+			nt_errstr(status));
+		TALLOC_FREE(frame);
+		return status;
+	}
+
+	ok = auth3_context_set_challenge(auth_context,
+					 challenge->data, "fixed");
+	if (!ok) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = auth_check_ntlm_password(mem_ctx,
+					  auth_context,
+					  user_info,
+					  &server_info,
+					  pauthoritative);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(frame);
+		return status;
+	}
+
+	info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
+	if (info3 == NULL) {
+		TALLOC_FREE(frame);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	status = serverinfo_to_SamInfo3(server_info, info3);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(frame);
+		TALLOC_FREE(info3);
+		DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	*pinfo3 = info3;
+	DBG_DEBUG("Authenticating user %s\\%s returned %s\n",
+		  domain,
+		  user,
+		  nt_errstr(status));
+	TALLOC_FREE(frame);
+	return status;
+}
+
+static NTSTATUS winbind_samlogon_retry_loop(struct winbindd_domain *domain,
+					    TALLOC_CTX *mem_ctx,
+					    uint32_t logon_parameters,
+					    const char *username,
+					    const char *password,
+					    const char *domainname,
+					    const char *workstation,
+					    const uint64_t logon_id,
+					    bool plaintext_given,
+					    DATA_BLOB chal,
+					    DATA_BLOB lm_response,
+					    DATA_BLOB nt_response,
+					    bool interactive,
+					    uint8_t *authoritative,
+					    uint32_t *flags,
+					    uint16_t *_validation_level,
+					    union netr_Validation **_validation)
+{
+	int attempts = 0;
+	int netr_attempts = 0;
+	bool retry = false;
+	bool valid_result = false;
+	NTSTATUS result;
+	enum netr_LogonInfoClass logon_type_i;
+	enum netr_LogonInfoClass logon_type_n;
+	uint16_t validation_level = UINT16_MAX;
+	union netr_Validation *validation = NULL;
+	TALLOC_CTX *base_ctx = NULL;
+	struct netr_SamBaseInfo *base_info = NULL;
+
+	do {
+		struct rpc_pipe_client *netlogon_pipe;
+		struct netlogon_creds_cli_context *netlogon_creds_ctx = NULL;
+
+		/*
+		 * We should always reset authoritative to 1
+		 * before calling a server again.
+		 *
+		 * Otherwise we could treat a local problem as
+		 * non-authoritative.
+		 */
+		*authoritative = 1;
+
+		retry = false;
+
+		D_DEBUG("Creating a DCERPC netlogon connection for SAM logon. "
+			"netlogon attempt: %d, samlogon attempt: %d.\n",
+			netr_attempts,
+			attempts);
+		result = cm_connect_netlogon_secure(domain, &netlogon_pipe,
+						    &netlogon_creds_ctx);
+
+		if (NT_STATUS_EQUAL(result,
+				    NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
+			/*
+			 * This means we don't have a trust account.
+			 */
+			*authoritative = 0;
+			result = NT_STATUS_NO_SUCH_USER;
+			break;
+		}
+
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(3,("Could not open handle to NETLOGON pipe "
+				 "(error: %s, attempts: %d)\n",
+				  nt_errstr(result), netr_attempts));
+
+			reset_cm_connection_on_error(domain, NULL, result);
+
+			/* After the first retry always close the connection */
+			if (netr_attempts > 0) {
+				DEBUG(3, ("This is again a problem for this "
+					  "particular call, forcing the close "
+					  "of this connection\n"));
+				invalidate_cm_connection(domain);
+			}
+
+			/* After the second retry failover to the next DC */
+			if (netr_attempts > 1) {
+				/*
+				 * If the netlogon server is not reachable then
+				 * it is possible that the DC is rebuilding
+				 * sysvol and shutdown netlogon for that time.
+				 * We should failover to the next dc.
+				 */
+				DEBUG(3, ("This is the third problem for this "
+					  "particular call, adding DC to the "
+					  "negative cache list: %s %s\n", domain->name, domain->dcname));
+				add_failed_connection_entry(domain->name,
+							    domain->dcname,
+							    result);
+				saf_delete(domain->name);
+			}
+
+			/* Only allow 3 retries */
+			if (netr_attempts < 3) {
+				DEBUG(3, ("The connection to netlogon "
+					  "failed, retrying\n"));
+				netr_attempts++;
+				retry = true;
+				continue;
+			}
+			return result;
+		}
+
+		logon_type_i = NetlogonInteractiveInformation;
+		logon_type_n = NetlogonNetworkInformation;
+		if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_WITHIN_FOREST) {
+			logon_type_i = NetlogonInteractiveTransitiveInformation;
+			logon_type_n = NetlogonNetworkTransitiveInformation;
+		}
+
+		if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) {
+			logon_type_i = NetlogonInteractiveTransitiveInformation;
+			logon_type_n = NetlogonNetworkTransitiveInformation;
+		}
+
+		if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_NON_TRANSITIVE) {
+			logon_type_i = NetlogonInteractiveInformation;
+			logon_type_n = NetlogonNetworkInformation;
+		}
+
+		if (domain->domain_trust_attribs & LSA_TRUST_ATTRIBUTE_QUARANTINED_DOMAIN) {
+			logon_type_i = NetlogonInteractiveInformation;
+			logon_type_n = NetlogonNetworkInformation;
+		}
+
+		netr_attempts = 0;
+		if (plaintext_given) {
+			result = rpccli_netlogon_password_logon(
+				netlogon_creds_ctx,
+				netlogon_pipe->binding_handle,
+				mem_ctx,
+				logon_parameters,
+				domainname,
+				username,
+				password,
+				workstation,
+				logon_id,
+				logon_type_i,
+				authoritative,
+				flags,
+				&validation_level,
+				&validation);
+		} else if (interactive) {
+			result = rpccli_netlogon_interactive_logon(
+				netlogon_creds_ctx,
+				netlogon_pipe->binding_handle,
+				mem_ctx,
+				logon_parameters,
+				username,
+				domainname,
+				workstation,
+				logon_id,
+				lm_response,
+				nt_response,
+				logon_type_i,
+				authoritative,
+				flags,
+				&validation_level,
+				&validation);
+		} else {
+			result = rpccli_netlogon_network_logon(
+				netlogon_creds_ctx,
+				netlogon_pipe->binding_handle,
+				mem_ctx,
+				logon_parameters,
+				username,
+				domainname,
+				workstation,
+				logon_id,
+				chal,
+				lm_response,
+				nt_response,
+				logon_type_n,
+				authoritative,
+				flags,
+				&validation_level,
+				&validation);
+		}
+
+		/*
+		 * we increment this after the "feature negotiation"
+		 * for can_do_samlogon_ex and can_do_validation6
+		 */
+		attempts += 1;
+
+		/* We have to try a second time as cm_connect_netlogon
+		   might not yet have noticed that the DC has killed
+		   our connection. */
+
+		retry = reset_cm_connection_on_error(domain,
+						     netlogon_pipe->binding_handle,
+						     result);
+		if (retry) {
+			DBG_PREFIX(attempts > 1 ? DBGLVL_NOTICE : DBGLVL_INFO, (
+				   "This is problem %d for this "
+				   "particular call,"
+				   "DOMAIN[%s] DC[%s] - %s\n",
+				   attempts,
+				   domain->name,
+				   domain->dcname,
+				   nt_errstr(result)));
+			continue;
+		}
+
+		valid_result = true;
+
+		if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE)) {
+			/*
+			 * Got DCERPC_FAULT_OP_RNG_ERROR for SamLogon
+			 * (no Ex). This happens against old Samba
+			 * DCs, if LogonSamLogonEx() fails with an error
+			 * e.g. NT_STATUS_NO_SUCH_USER or NT_STATUS_WRONG_PASSWORD.
+			 *
+			 * The server will log something like this:
+			 * api_net_sam_logon_ex: Failed to marshall NET_R_SAM_LOGON_EX.
+			 *
+			 * This sets the whole connection into a fault_state mode
+			 * and all following request get NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE.
+			 *
+			 * This also happens to our retry with LogonSamLogonWithFlags()
+			 * and LogonSamLogon().
+			 *
+			 * In order to recover from this situation, we need to
+			 * drop the connection.
+			 */
+			invalidate_cm_connection(domain);
+			result = NT_STATUS_LOGON_FAILURE;
+			break;
+		}
+
+	} while ( (attempts < 3) && retry );
+
+	if (!valid_result) {
+		/*
+		 * This matches what windows does. In a chain of transitive
+		 * trusts the ACCESS_DENIED/authoritative=0 is not propagated
+		 * instead of NT_STATUS_NO_LOGON_SERVERS/authoritative=1 is
+		 * passed along the chain if there's no other DC is available.
+		 */
+		DBG_WARNING("Mapping %s/authoritative=%u to "
+			    "NT_STATUS_NO_LOGON_SERVERS/authoritative=1 for"
+			    "USERNAME[%s] USERDOMAIN[%s] REMOTE-DOMAIN[%s] \n",
+			    nt_errstr(result),
+			    *authoritative,
+			    username,
+			    domainname,
+			    domain->name);
+		*authoritative = 1;
+		return NT_STATUS_NO_LOGON_SERVERS;
+	}
+
+	if (!NT_STATUS_IS_OK(result)) {
+		return result;
+	}
+
+	switch (validation_level) {
+	case 3:
+		base_ctx = validation->sam3;
+		base_info = &validation->sam3->base;
+		break;
+	case 6:
+		base_ctx = validation->sam6;
+		base_info = &validation->sam6->base;
+		break;
+	default:
+		smb_panic(__location__);
+	}
+
+	if (base_info->acct_flags == 0 || base_info->account_name.string == NULL) {
+		struct dom_sid user_sid;
+		struct dom_sid_buf sid_buf;
+		const char *acct_flags_src = "server";
+		const char *acct_name_src = "server";
+
+		/*
+		 * Handle the case where a NT4 DC does not fill in the acct_flags in
+		 * the samlogon reply info3. Yes, in 2021, there are still admins
+		 * around with real NT4 DCs.
+		 *
+		 * We used to call dcerpc_samr_QueryUserInfo(level=16) to fetch
+		 * acct_flags, but as NT4 DCs reject authentication with workstation
+		 * accounts with NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, even if
+		 * MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT is specified, we only ever got
+		 * ACB_NORMAL back (maybe with ACB_PWNOEXP in addition).
+		 *
+		 * For network logons NT4 DCs also skip the
+		 * account_name, so we have to fallback to the
+		 * one given by the client.
+		 */
+
+		if (base_info->acct_flags == 0) {
+			base_info->acct_flags = ACB_NORMAL;
+			if (base_info->force_password_change == NTTIME_MAX) {
+				base_info->acct_flags |= ACB_PWNOEXP;
+			}
+			acct_flags_src = "calculated";
+		}
+
+		if (base_info->account_name.string == NULL) {
+			base_info->account_name.string = talloc_strdup(base_ctx,
+								       username);
+			if (base_info->account_name.string == NULL) {
+				TALLOC_FREE(validation);
+				return NT_STATUS_NO_MEMORY;
+			}
+			acct_name_src = "client";
+		}
+
+		sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+		DBG_DEBUG("Fallback to %s_acct_flags[0x%x] %s_acct_name[%s] for %s\n",
+			  acct_flags_src,
+			  base_info->acct_flags,
+			  acct_name_src,
+			  base_info->account_name.string,
+			  dom_sid_str_buf(&user_sid, &sid_buf));
+	}
+
+	*_validation_level = validation_level;
+	*_validation = validation;
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS nt_dual_auth_passdb(TALLOC_CTX *mem_ctx,
+				    fstring name_user,
+				    fstring name_domain,
+				    const char *pass,
+				    uint64_t logon_id,
+				    const char *client_name,
+				    const int client_pid,
+				    const struct tsocket_address *remote,
+				    const struct tsocket_address *local,
+				    uint8_t *authoritative,
+				    struct netr_SamInfo3 **info3)
+{
+	unsigned char local_nt_response[24];
+	uchar chal[8];
+	DATA_BLOB chal_blob;
+	DATA_BLOB lm_resp;
+	DATA_BLOB nt_resp;
+
+	/* do password magic */
+
+	generate_random_buffer(chal, sizeof(chal));
+	chal_blob = data_blob_const(chal, sizeof(chal));
+
+	if (lp_client_ntlmv2_auth()) {
+		DATA_BLOB server_chal;
+		DATA_BLOB names_blob;
+		server_chal = data_blob_const(chal, 8);
+
+		/* note that the 'workgroup' here is for the local
+		   machine.  The 'server name' must match the
+		   'workstation' passed to the actual SamLogon call.
+		*/
+		names_blob = NTLMv2_generate_names_blob(mem_ctx,
+							lp_netbios_name(),
+							lp_workgroup());
+
+		if (!SMBNTLMv2encrypt(mem_ctx, name_user, name_domain,
+				      pass, &server_chal, &names_blob,
+				      &lm_resp, &nt_resp, NULL, NULL)) {
+			data_blob_free(&names_blob);
+			DEBUG(0, ("SMBNTLMv2encrypt() failed!\n"));
+			return NT_STATUS_NO_MEMORY;
+		}
+		data_blob_free(&names_blob);
+	} else {
+		int rc;
+		lm_resp = data_blob_null;
+
+		rc = SMBNTencrypt(pass, chal, local_nt_response);
+		if (rc != 0) {
+			DEBUG(0, ("SMBNTencrypt() failed!\n"));
+			return gnutls_error_to_ntstatus(rc,
+				    NT_STATUS_ACCESS_DISABLED_BY_POLICY_OTHER);
+		}
+
+		nt_resp = data_blob_talloc(mem_ctx, local_nt_response,
+					   sizeof(local_nt_response));
+	}
+
+	return winbindd_dual_auth_passdb(talloc_tos(), 0, name_domain,
+					 name_user, logon_id, client_name,
+					 client_pid, &chal_blob, &lm_resp,
+					 &nt_resp, remote, local,
+					 true, /* interactive */
+					 authoritative, info3);
+}
+
+static NTSTATUS winbindd_dual_pam_auth_samlogon(
+	TALLOC_CTX *mem_ctx,
+	struct winbindd_domain *domain,
+	const char *user,
+	const char *pass,
+	uint64_t logon_id,
+	const char *client_name,
+	const int client_pid,
+	uint32_t request_flags,
+	const struct tsocket_address *remote,
+	const struct tsocket_address *local,
+	uint16_t *_validation_level,
+	union netr_Validation **_validation)
+{
+	char *name_namespace = NULL;
+	char *name_domain = NULL;
+	char *name_user = NULL;
+	NTSTATUS result;
+	uint8_t authoritative = 1;
+	uint32_t flags = 0;
+	uint16_t validation_level = 0;
+	union netr_Validation *validation = NULL;
+	bool ok;
+
+	DEBUG(10,("winbindd_dual_pam_auth_samlogon\n"));
+
+	/* Parse domain and username */
+
+	ok = parse_domain_user(mem_ctx,
+			user,
+			&name_namespace,
+			&name_domain,
+			&name_user);
+	if (!ok) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/*
+	 * We check against domain->name instead of
+	 * name_domain, as find_auth_domain() ->
+	 * find_domain_from_name_noinit() already decided
+	 * that we are in a child for the correct domain.
+	 *
+	 * name_domain can also be lp_realm()
+	 * we need to check against domain->name.
+	 */
+	if (strequal(domain->name, get_global_sam_name())) {
+		struct netr_SamInfo3 *info3 = NULL;
+
+		result = nt_dual_auth_passdb(mem_ctx, name_user, name_domain,
+					     pass, logon_id, client_name,
+					     client_pid, remote, local,
+					     &authoritative, &info3);
+
+		/*
+		 * We need to try the remote NETLOGON server if this is
+		 * not authoritative (for example on the RODC).
+		 */
+		if (authoritative != 0) {
+			if (!NT_STATUS_IS_OK(result)) {
+				return result;
+			}
+			result = map_info3_to_validation(mem_ctx,
+							 info3,
+							 &validation_level,
+							 &validation);
+			TALLOC_FREE(info3);
+			if (!NT_STATUS_IS_OK(result)) {
+				return result;
+			}
+
+			goto done;
+		}
+	}
+
+	/* check authentication loop */
+
+	result = winbind_samlogon_retry_loop(domain,
+					     mem_ctx,
+					     0,
+					     name_user,
+					     pass,
+					     name_domain,
+					     lp_netbios_name(),
+					     logon_id,
+					     true, /* plaintext_given */
+					     data_blob_null,
+					     data_blob_null, data_blob_null,
+					     true, /* interactive */
+					     &authoritative,
+					     &flags,
+					     &validation_level,
+					     &validation);
+	if (!NT_STATUS_IS_OK(result)) {
+		return result;
+	}
+
+done:
+	*_validation_level = validation_level;
+	*_validation = validation;
+
+	return NT_STATUS_OK;
+}
+
+/*
+ * @brief generate an authentication message in the logs.
+ *
+ */
+static void log_authentication(
+	TALLOC_CTX *mem_ctx,
+	const struct winbindd_domain *domain,
+	const char *client_name,
+	pid_t client_pid,
+	uint16_t validation_level,
+	union netr_Validation *validation,
+	const struct timeval start_time,
+	const uint64_t logon_id,
+	const char *command,
+	const char *user_name,
+	const char *domain_name,
+	const char *workstation,
+	const DATA_BLOB lm_resp,
+	const DATA_BLOB nt_resp,
+	const struct tsocket_address *remote,
+	const struct tsocket_address *local,
+	NTSTATUS result)
+{
+	struct auth_usersupplied_info *ui = NULL;
+	struct dom_sid *sid = NULL;
+	struct loadparm_context *lp_ctx = NULL;
+	struct imessaging_context *msg_ctx = NULL;
+	struct netr_SamBaseInfo *base_info = NULL;
+
+	if (validation != NULL) {
+		switch (validation_level) {
+		case 3:
+			base_info = &validation->sam3->base;
+			break;
+		case 6:
+			base_info = &validation->sam6->base;
+			break;
+		default:
+			DBG_WARNING("Unexpected validation level '%d'\n",
+				    validation_level);
+			break;
+		}
+	}
+
+	ui = talloc_zero(mem_ctx, struct auth_usersupplied_info);
+	ui->logon_id = logon_id;
+	ui->service_description = "winbind";
+	ui->password.response.nt.length = nt_resp.length;
+	ui->password.response.nt.data = nt_resp.data;
+	ui->password.response.lanman.length = lm_resp.length;
+	ui->password.response.lanman.data = lm_resp.data;
+	if (nt_resp.length == 0 && lm_resp.length == 0) {
+		ui->password_state = AUTH_PASSWORD_PLAIN;
+	} else {
+		ui->password_state = AUTH_PASSWORD_RESPONSE;
+	}
+	/*
+	 * In the event of a failure ui->auth_description will be null,
+	 * the logging code handles this correctly so it can be ignored.
+	 */
+	ui->auth_description = talloc_asprintf(
+		ui,
+		"%s, %s, %d",
+		command,
+		client_name,
+		client_pid);
+	if (ui->auth_description == NULL) {
+		DBG_ERR("OOM Unable to create auth_description\n");
+	}
+	ui->client.account_name = user_name;
+	ui->client.domain_name = domain_name;
+	ui->workstation_name = workstation;
+	ui->remote_host = remote;
+	ui->local_host = local;
+
+	if (base_info != NULL) {
+		sid = dom_sid_dup(ui, base_info->domain_sid);
+		if (sid != NULL) {
+			sid_append_rid(sid, base_info->rid);
+		}
+	}
+
+	if (lp_auth_event_notification()) {
+		lp_ctx = loadparm_init_s3(ui, loadparm_s3_helpers());
+		msg_ctx = imessaging_client_init(
+		    ui, lp_ctx, global_event_context());
+	}
+	log_authentication_event(
+	    msg_ctx,
+	    lp_ctx,
+	    &start_time,
+	    ui,
+	    result,
+	    base_info != NULL ? base_info->logon_domain.string : "",
+	    base_info != NULL ? base_info->account_name.string : "",
+	    sid,
+	    NULL /* client_audit_info */,
+	    NULL /* server_audit_info */);
+	TALLOC_FREE(ui);
+}
+
+NTSTATUS _wbint_PamAuth(struct pipes_struct *p,
+			struct wbint_PamAuth *r)
+{
+	struct winbindd_domain *domain = wb_child_domain();
+	NTSTATUS result = NT_STATUS_LOGON_FAILURE;
+	NTSTATUS krb5_result = NT_STATUS_OK;
+	char *name_namespace = NULL;
+	char *name_domain = NULL;
+	char *name_user = NULL;
+	char *mapped_user = NULL;
+	const char *domain_user = NULL;
+	uint16_t validation_level = UINT16_MAX;
+	union netr_Validation *validation = NULL;
+	struct netr_SamBaseInfo *base_info = NULL;
+	NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
+	bool ok;
+	uint64_t logon_id = 0;
+	const struct timeval start_time = timeval_current();
+	const struct tsocket_address *remote = NULL;
+	const struct tsocket_address *local = NULL;
+	const char *krb5ccname = NULL;
+	uid_t uid;
+	pid_t client_pid;
+
+	if (domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	/* Cut client_pid to 32bit */
+	client_pid = r->in.client_pid;
+	if ((uint64_t)client_pid != r->in.client_pid) {
+		DBG_DEBUG("pid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* Cut uid to 32bit */
+	uid = r->in.info->uid;
+	if ((uint64_t)uid != r->in.info->uid) {
+		DBG_DEBUG("uid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/*
+	 * Generate a logon_id for this session.
+	 */
+	logon_id = generate_random_u64();
+	remote = dcesrv_connection_get_remote_address(p->dce_call->conn);
+	local = dcesrv_connection_get_local_address(p->dce_call->conn);
+	DEBUG(3, ("[%"PRIu32"]: dual pam auth %s\n", client_pid,
+		  r->in.info->username));
+
+	/* Parse domain and username */
+
+	name_map_status = normalize_name_unmap(p->mem_ctx,
+					       r->in.info->username,
+					       &mapped_user);
+
+	/* If the name normalization didn't actually do anything,
+	   just use the original name */
+
+	if (!NT_STATUS_IS_OK(name_map_status) &&
+	    !NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
+	{
+		mapped_user = discard_const(r->in.info->username);
+	}
+
+	ok = parse_domain_user(p->mem_ctx,
+			       mapped_user,
+			       &name_namespace,
+			       &name_domain,
+			       &name_user);
+	if (!ok) {
+		result = NT_STATUS_INVALID_PARAMETER;
+		goto done;
+	}
+
+	if (mapped_user != r->in.info->username) {
+		domain_user = talloc_asprintf(talloc_tos(),
+					      "%s%c%s",
+					      name_domain,
+					      *lp_winbind_separator(),
+					      name_user);
+		if (domain_user == NULL) {
+			result = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+		r->in.info->username = domain_user;
+	}
+
+	if (!domain->online) {
+		result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
+		if (domain->startup) {
+			/* Logons are very important to users. If we're offline and
+			   we get a request within the first 30 seconds of startup,
+			   try very hard to find a DC and go online. */
+
+			DEBUG(10,("winbindd_dual_pam_auth: domain: %s offline and auth "
+				"request in startup mode.\n", domain->name ));
+
+			winbindd_flush_negative_conn_cache(domain);
+			result = init_dc_connection(domain, false);
+		}
+	}
+
+	DEBUG(10,("winbindd_dual_pam_auth: domain: %s last was %s\n", domain->name, domain->online ? "online":"offline"));
+
+	/* Check for Kerberos authentication */
+	if (domain->online && (r->in.flags & WBFLAG_PAM_KRB5)) {
+		result = winbindd_dual_pam_auth_kerberos(
+				domain,
+				r->in.info->username,
+				r->in.info->password,
+				r->in.info->krb5_cc_type,
+				uid,
+				p->mem_ctx,
+				&validation_level,
+				&validation,
+				&krb5ccname);
+
+		/* save for later */
+		krb5_result = result;
+
+		if (NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("winbindd_dual_pam_auth_kerberos succeeded\n"));
+			goto process_result;
+		}
+
+		DBG_DEBUG("winbindd_dual_pam_auth_kerberos failed: %s\n",
+			  nt_errstr(result));
+
+		if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
+			DEBUG(10,("winbindd_dual_pam_auth_kerberos setting domain to offline\n"));
+			set_domain_offline( domain );
+			goto cached_logon;
+		}
+
+		/* there are quite some NT_STATUS errors where there is no
+		 * point in retrying with a samlogon, we explicitly have to take
+		 * care not to increase the bad logon counter on the DC */
+
+		if (NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_DISABLED) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_EXPIRED) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_LOCKED_OUT) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_INVALID_LOGON_HOURS) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_INVALID_WORKSTATION) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_WRONG_PASSWORD)) {
+			goto done;
+		}
+
+		if (r->in.flags & WBFLAG_PAM_FALLBACK_AFTER_KRB5) {
+			DEBUG(3,("falling back to samlogon\n"));
+			goto sam_logon;
+		} else {
+			goto cached_logon;
+		}
+	}
+
+sam_logon:
+	/* Check for Samlogon authentication */
+	if (domain->online) {
+		result = winbindd_dual_pam_auth_samlogon(
+			p->mem_ctx,
+			domain,
+			r->in.info->username,
+			r->in.info->password,
+			logon_id,
+			r->in.client_name,
+			client_pid,
+			r->in.flags,
+			remote,
+			local,
+			&validation_level,
+			&validation);
+
+		if (NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("winbindd_dual_pam_auth_samlogon succeeded\n"));
+
+			switch (validation_level) {
+			case 3:
+				base_info = &validation->sam3->base;
+				break;
+			case 6:
+				base_info = &validation->sam6->base;
+				break;
+			default:
+				DBG_ERR("Bad validation level %d\n",
+					validation_level);
+				result = NT_STATUS_INTERNAL_ERROR;
+				goto done;
+			}
+
+			/* add the Krb5 err if we have one */
+			if ( NT_STATUS_EQUAL(krb5_result, NT_STATUS_TIME_DIFFERENCE_AT_DC ) ) {
+				base_info->user_flags |= LOGON_KRB5_FAIL_CLOCK_SKEW;
+			}
+
+			goto process_result;
+		}
+
+		DEBUG(10,("winbindd_dual_pam_auth_samlogon failed: %s\n",
+			  nt_errstr(result)));
+
+		if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
+		    NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND))
+		{
+			DEBUG(10,("winbindd_dual_pam_auth_samlogon setting domain to offline\n"));
+			set_domain_offline( domain );
+			goto cached_logon;
+		}
+
+		if (domain->online) {
+			/* We're still online - fail. */
+			goto done;
+		}
+	}
+
+cached_logon:
+	/* Check for Cached logons */
+	if (!domain->online && (r->in.flags & WBFLAG_PAM_CACHED_LOGIN) &&
+	    lp_winbind_offline_logon()) {
+		result = winbindd_dual_pam_auth_cached(domain,
+				(r->in.flags & WBFLAG_PAM_KRB5),
+				r->in.info->username,
+				r->in.info->password,
+				r->in.info->krb5_cc_type,
+				uid,
+				p->mem_ctx,
+				&validation_level,
+				&validation,
+				&krb5ccname);
+
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10,("winbindd_dual_pam_auth_cached failed: %s\n", nt_errstr(result)));
+			goto done;
+		}
+		DEBUG(10,("winbindd_dual_pam_auth_cached succeeded\n"));
+	}
+
+process_result:
+
+	if (NT_STATUS_IS_OK(result)) {
+		struct dom_sid user_sid;
+		TALLOC_CTX *base_ctx = NULL;
+		struct netr_SamInfo3 *info3 = NULL;
+
+		switch (validation_level) {
+		case 3:
+			base_ctx = validation->sam3;
+			base_info = &validation->sam3->base;
+			break;
+		case 6:
+			base_ctx = validation->sam6;
+			base_info = &validation->sam6->base;
+			break;
+		default:
+			DBG_ERR("Bad validation level %d\n", validation_level);
+			result = NT_STATUS_INTERNAL_ERROR;
+			goto done;
+		}
+
+		sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+		if (base_info->full_name.string == NULL) {
+			struct netr_SamInfo3 *cached_info3;
+
+			cached_info3 = netsamlogon_cache_get(p->mem_ctx,
+							     &user_sid);
+			if (cached_info3 != NULL &&
+			    cached_info3->base.full_name.string != NULL) {
+				base_info->full_name.string = talloc_strdup(
+					base_ctx,
+					cached_info3->base.full_name.string);
+				if (base_info->full_name.string == NULL) {
+					result = NT_STATUS_NO_MEMORY;
+					goto done;
+				}
+			} else {
+
+				/* this might fail so we don't check the return code */
+				wcache_query_user_fullname(domain,
+						base_ctx,
+						&user_sid,
+						&base_info->full_name.string);
+			}
+		}
+
+		result = map_validation_to_info3(talloc_tos(),
+						 validation_level,
+						 validation,
+						 &info3);
+		if (!NT_STATUS_IS_OK(result)) {
+			goto done;
+		}
+
+		wcache_invalidate_samlogon(find_domain_from_name(name_domain),
+					   &user_sid);
+		netsamlogon_cache_store(name_user, info3);
+
+		/* save name_to_sid info as early as possible (only if
+		   this is our primary domain so we don't invalidate
+		   the cache entry by storing the seq_num for the wrong
+		   domain). */
+		if ( domain->primary ) {
+			cache_name2sid(domain, name_domain, name_user,
+				       SID_NAME_USER, &user_sid);
+		}
+
+		/* Check if the user is in the right group */
+
+		result = check_info3_in_group(info3,
+					      r->in.require_membership_of_sid);
+		if (!NT_STATUS_IS_OK(result)) {
+			char *s = NDR_PRINT_STRUCT_STRING(p->mem_ctx,
+					wbint_SidArray,
+					r->in.require_membership_of_sid);
+			DBG_NOTICE("User %s is not in the required groups:\n",
+				   r->in.info->username);
+			DEBUGADD(DBGLVL_NOTICE, ("%s", s));
+			DEBUGADD(DBGLVL_NOTICE,
+				 ("Plaintext authentication is rejected\n"));
+			goto done;
+		}
+
+		if (!is_allowed_domain(info3->base.logon_domain.string)) {
+			DBG_NOTICE("Authentication failed for user [%s] "
+				   "from firewalled domain [%s]\n",
+				   info3->base.account_name.string,
+				   info3->base.logon_domain.string);
+			result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+			goto done;
+		}
+
+		r->out.validation = talloc_zero(p->mem_ctx,
+						struct wbint_Validation);
+		if (r->out.validation == NULL) {
+			result = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+
+		r->out.validation->level = validation_level;
+		r->out.validation->validation = talloc_steal(r->out.validation,
+							     validation);
+		r->out.validation->krb5ccname = talloc_steal(r->out.validation,
+							     krb5ccname);
+		if ((r->in.flags & WBFLAG_PAM_CACHED_LOGIN)
+		    && lp_winbind_offline_logon()) {
+
+			result = winbindd_store_creds(domain,
+						      r->in.info->username,
+						      r->in.info->password,
+						      info3);
+		}
+
+		result = NT_STATUS_OK;
+	}
+
+done:
+	/* give us a more useful (more correct?) error code */
+	if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
+	    (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
+		result = NT_STATUS_NO_LOGON_SERVERS;
+	}
+
+	DBG_PREFIX(NT_STATUS_IS_OK(result) ? 5 : 2,
+		   ("Plain-text authentication for user %s returned %s"
+		   " (PAM: %d)\n",
+		   r->in.info->username,
+		   nt_errstr(result),
+		   nt_status_to_pam(result)));
+
+	/*
+	 * Log the winbind pam authentication, the logon_id will tie this to
+	 * any of the logons invoked from this request.
+	 */
+
+	log_authentication(
+	    p->mem_ctx,
+	    domain,
+	    r->in.client_name,
+	    client_pid,
+	    validation_level,
+	    validation,
+	    start_time,
+	    logon_id,
+	    "PAM_AUTH",
+	    name_user,
+	    name_domain,
+	    NULL,
+	    data_blob_null,
+	    data_blob_null,
+	    remote,
+	    local,
+	    result);
+
+	if (NT_STATUS_IS_OK(result)) {
+		gpupdate_user_init(r->in.info->username);
+	}
+
+	return result;
+}
+
+NTSTATUS winbind_dual_SamLogon(struct winbindd_domain *domain,
+			       TALLOC_CTX *mem_ctx,
+			       bool interactive,
+			       uint32_t logon_parameters,
+			       const char *name_user,
+			       const char *name_domain,
+			       const char *workstation,
+			       const uint64_t logon_id,
+			       const char* client_name,
+			       const int client_pid,
+			       DATA_BLOB chal_blob,
+			       DATA_BLOB lm_response,
+			       DATA_BLOB nt_response,
+			       const struct tsocket_address *remote,
+			       const struct tsocket_address *local,
+			       uint8_t *authoritative,
+			       bool skip_sam,
+			       uint32_t *flags,
+			       uint16_t *_validation_level,
+			       union netr_Validation **_validation)
+{
+	uint16_t validation_level = 0;
+	union netr_Validation *validation = NULL;
+	NTSTATUS result;
+
+	/*
+	 * We check against domain->name instead of
+	 * name_domain, as find_auth_domain() ->
+	 * find_domain_from_name_noinit() already decided
+	 * that we are in a child for the correct domain.
+	 *
+	 * name_domain can also be lp_realm()
+	 * we need to check against domain->name.
+	 */
+	if (!skip_sam && strequal(domain->name, get_global_sam_name())) {
+		struct netr_SamInfo3 *info3 = NULL;
+
+		result = winbindd_dual_auth_passdb(
+			talloc_tos(),
+			logon_parameters,
+			name_domain, name_user,
+			logon_id,
+			client_name,
+			client_pid,
+			&chal_blob, &lm_response, &nt_response,
+			remote,
+			local,
+			interactive,
+			authoritative,
+			&info3);
+		if (NT_STATUS_IS_OK(result)) {
+			result = map_info3_to_validation(mem_ctx,
+							 info3,
+							 &validation_level,
+							 &validation);
+			TALLOC_FREE(info3);
+			if (!NT_STATUS_IS_OK(result)) {
+				goto done;
+			}
+		}
+
+		/*
+		 * We need to try the remote NETLOGON server if this is
+		 * not authoritative.
+		 */
+		if (*authoritative != 0) {
+			*flags = 0;
+			goto process_result;
+		}
+	}
+
+	result = winbind_samlogon_retry_loop(domain,
+					     mem_ctx,
+					     logon_parameters,
+					     name_user,
+					     NULL, /* password */
+					     name_domain,
+					     /* Bug #3248 - found by Stefan Burkei. */
+					     workstation, /* We carefully set this above so use it... */
+					     logon_id,
+					     false, /* plaintext_given */
+					     chal_blob,
+					     lm_response,
+					     nt_response,
+					     interactive,
+					     authoritative,
+					     flags,
+					     &validation_level,
+					     &validation);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto done;
+	}
+
+process_result:
+
+	if (NT_STATUS_IS_OK(result)) {
+		struct dom_sid user_sid;
+		TALLOC_CTX *base_ctx = NULL;
+		struct netr_SamBaseInfo *base_info = NULL;
+		struct netr_SamInfo3 *info3 = NULL;
+
+		switch (validation_level) {
+		case 3:
+			base_ctx = validation->sam3;
+			base_info = &validation->sam3->base;
+			break;
+		case 6:
+			base_ctx = validation->sam6;
+			base_info = &validation->sam6->base;
+			break;
+		default:
+			result = NT_STATUS_INTERNAL_ERROR;
+			goto done;
+		}
+
+		sid_compose(&user_sid, base_info->domain_sid, base_info->rid);
+
+		if (base_info->full_name.string == NULL) {
+			struct netr_SamInfo3 *cached_info3;
+
+			cached_info3 = netsamlogon_cache_get(mem_ctx,
+							     &user_sid);
+			if (cached_info3 != NULL &&
+			    cached_info3->base.full_name.string != NULL)
+			{
+				base_info->full_name.string = talloc_strdup(
+					base_ctx,
+					cached_info3->base.full_name.string);
+			} else {
+
+				/* this might fail so we don't check the return code */
+				wcache_query_user_fullname(domain,
+						base_ctx,
+						&user_sid,
+						&base_info->full_name.string);
+			}
+		}
+
+		result = map_validation_to_info3(talloc_tos(),
+						 validation_level,
+						 validation,
+						 &info3);
+		if (!NT_STATUS_IS_OK(result)) {
+			goto done;
+		}
+		wcache_invalidate_samlogon(find_domain_from_name(name_domain),
+					   &user_sid);
+		netsamlogon_cache_store(name_user, info3);
+		TALLOC_FREE(info3);
+	}
+
+done:
+
+	/* give us a more useful (more correct?) error code */
+	if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
+	    (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
+		result = NT_STATUS_NO_LOGON_SERVERS;
+	}
+
+	DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+	      ("NTLM CRAP authentication for user [%s]\\[%s] returned %s\n",
+	       name_domain,
+	       name_user,
+	       nt_errstr(result)));
+
+	if (!NT_STATUS_IS_OK(result)) {
+		return result;
+	}
+
+	*_validation_level = validation_level;
+	*_validation = validation;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS _wbint_PamAuthCrap(struct pipes_struct *p, struct wbint_PamAuthCrap *r)
+{
+	struct winbindd_domain *domain = wb_child_domain();
+	NTSTATUS result;
+	uint64_t logon_id = 0;
+	uint8_t authoritative = 1;
+	uint32_t flags = 0;
+	uint16_t validation_level = UINT16_MAX;
+	union netr_Validation *validation = NULL;
+	const struct timeval start_time = timeval_current();
+	const struct tsocket_address *remote = NULL;
+	const struct tsocket_address *local = NULL;
+	struct netr_SamInfo3 *info3 = NULL;
+	pid_t client_pid;
+
+	if (domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	/* Cut client_pid to 32bit */
+	client_pid = r->in.client_pid;
+	if ((uint64_t)client_pid != r->in.client_pid) {
+		DBG_DEBUG("pid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	logon_id = generate_random_u64();
+	remote = dcesrv_connection_get_remote_address(p->dce_call->conn);
+	local = dcesrv_connection_get_local_address(p->dce_call->conn);
+
+	DBG_NOTICE("[%"PRIu32"]: pam auth crap domain: %s user: %s\n",
+		   client_pid, r->in.domain, r->in.user);
+
+	result = winbind_dual_SamLogon(domain,
+				       p->mem_ctx,
+				       false, /* interactive */
+				       r->in.logon_parameters,
+				       r->in.user,
+				       r->in.domain,
+				       r->in.workstation,
+				       logon_id,
+				       r->in.client_name,
+				       client_pid,
+				       r->in.chal,
+				       r->in.lm_resp,
+				       r->in.nt_resp,
+				       remote,
+				       local,
+				       &authoritative,
+				       false,
+				       &flags,
+				       &validation_level,
+				       &validation);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto done;
+	}
+
+	result = map_validation_to_info3(p->mem_ctx,
+					 validation_level,
+					 validation,
+					 &info3);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto done;
+	}
+
+	/* Check if the user is in the right group */
+	result = check_info3_in_group(info3, r->in.require_membership_of_sid);
+	if (!NT_STATUS_IS_OK(result)) {
+		char *s = NDR_PRINT_STRUCT_STRING(p->mem_ctx,
+						  wbint_SidArray,
+						  r->in.require_membership_of_sid);
+		DBG_NOTICE("User %s is not in the required groups:\n",
+			   r->in.user);
+		DEBUGADD(DBGLVL_NOTICE, ("%s", s));
+		DEBUGADD(DBGLVL_NOTICE,
+			 ("CRAP authentication is rejected\n"));
+		goto done;
+	}
+
+	if (!is_allowed_domain(info3->base.logon_domain.string)) {
+		DBG_NOTICE("Authentication failed for user [%s] "
+			   "from firewalled domain [%s]\n",
+			   info3->base.account_name.string,
+			   info3->base.logon_domain.string);
+		result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+		goto done;
+	}
+
+	r->out.validation = talloc_zero(p->mem_ctx,
+					struct wbint_PamAuthCrapValidation);
+	if (r->out.validation == NULL) {
+		result = NT_STATUS_NO_MEMORY;
+		goto done;
+	}
+
+	r->out.validation->level = validation_level;
+	r->out.validation->validation = talloc_move(r->out.validation,
+						    &validation);
+done:
+
+	if (r->in.flags & WBFLAG_PAM_NT_STATUS_SQUASH) {
+		result = nt_status_squash(result);
+	}
+
+	*r->out.authoritative = authoritative;
+
+	/*
+	 * Log the winbind pam authentication, the logon_id will tie this to
+	 * any of the logons invoked from this request.
+	 */
+	log_authentication(
+	    p->mem_ctx,
+	    domain,
+	    r->in.client_name,
+	    client_pid,
+	    r->out.validation->level,
+	    r->out.validation->validation,
+	    start_time,
+	    logon_id,
+	    "NTLM_AUTH",
+	    r->in.user,
+	    r->in.domain,
+	    r->in.workstation,
+	    r->in.lm_resp,
+	    r->in.nt_resp,
+	    remote,
+	    local,
+	    result);
+
+	return result;
+}
+
+NTSTATUS _wbint_PamAuthChangePassword(struct pipes_struct *p,
+				      struct wbint_PamAuthChangePassword *r)
+{
+	struct winbindd_domain *contact_domain = wb_child_domain();
+	struct policy_handle dom_pol;
+	struct rpc_pipe_client *cli = NULL;
+	bool got_info = false;
+	struct samr_DomInfo1 *info = NULL;
+	struct userPwdChangeFailureInformation *reject = NULL;
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+	char *namespace = NULL;
+	char *domain = NULL;
+	char *user = NULL;
+	struct dcerpc_binding_handle *b = NULL;
+	bool ok;
+	pid_t client_pid;
+
+	ZERO_STRUCT(dom_pol);
+
+	if (contact_domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	/* Cut client_pid to 32bit */
+	client_pid = r->in.client_pid;
+	if ((uint64_t)client_pid != r->in.client_pid) {
+		DBG_DEBUG("pid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	DBG_NOTICE("[%"PRIu32"]: dual pam chauthtok %s\n",
+		   client_pid, r->in.user);
+
+	ok = parse_domain_user(p->mem_ctx,
+			       r->in.user,
+			       &namespace,
+			       &domain,
+			       &user);
+	if (!ok) {
+		goto done;
+	}
+
+	if (!is_allowed_domain(domain)) {
+		DBG_NOTICE("Authentication failed for user [%s] "
+			   "from firewalled domain [%s]\n",
+			   user, domain);
+		result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+		goto done;
+	}
+
+	/* Initialize reject reason */
+	*r->out.reject_reason = Undefined;
+
+	/* Get sam handle */
+
+	result = cm_connect_sam(contact_domain,
+				p->mem_ctx,
+				true,
+				&cli,
+				&dom_pol);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
+		goto done;
+	}
+
+	b = cli->binding_handle;
+
+	status = dcerpc_samr_chgpasswd_user4(cli->binding_handle,
+					     p->mem_ctx,
+					     cli->srv_name_slash,
+					     user,
+					     r->in.old_password,
+					     r->in.new_password,
+					     &result);
+	if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
+		/* Password successfully changed. */
+		goto done;
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
+		    NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED) ||
+		    NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
+			/* DO NOT FALLBACK TO RC4 */
+			if (lp_weak_crypto() == SAMBA_WEAK_CRYPTO_DISALLOWED) {
+				result = NT_STATUS_STRONG_CRYPTO_NOT_SUPPORTED;
+				goto process_result;
+			}
+		}
+	} else {
+		/* Password change was unsuccessful. */
+		if (!NT_STATUS_IS_OK(result)) {
+			goto done;
+		}
+	}
+
+	result = rpccli_samr_chgpasswd_user3(cli,
+					     p->mem_ctx,
+					     user,
+					     r->in.new_password,
+					     r->in.old_password,
+					     &info,
+					     &reject);
+
+ 	/* Windows 2003 returns NT_STATUS_PASSWORD_RESTRICTION */
+
+	if (NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_RESTRICTION) ) {
+
+		*r->out.dominfo = talloc_steal(p->mem_ctx, info);
+		*r->out.reject_reason = reject->extendedFailureReason;
+
+		got_info = true;
+	}
+
+	/* atm the pidl generated rpccli_samr_ChangePasswordUser3 function will
+	 * return with NT_STATUS_BUFFER_TOO_SMALL for w2k dcs as w2k just
+	 * returns with 4byte error code (NT_STATUS_NOT_SUPPORTED) which is too
+	 * short to comply with the samr_ChangePasswordUser3 idl - gd */
+
+	/* only fallback when the chgpasswd_user3 call is not supported */
+	if (NT_STATUS_EQUAL(result, NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
+	    NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED) ||
+	    NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL) ||
+	    NT_STATUS_EQUAL(result, NT_STATUS_NOT_IMPLEMENTED)) {
+
+		DEBUG(10,("Password change with chgpasswd_user3 failed with: %s, retrying chgpasswd_user2\n",
+			nt_errstr(result)));
+
+		result = rpccli_samr_chgpasswd_user2(cli,
+						     p->mem_ctx,
+						     user,
+						     r->in.new_password,
+						     r->in.old_password);
+
+		/* Windows 2000 returns NT_STATUS_ACCOUNT_RESTRICTION.
+		   Map to the same status code as Windows 2003. */
+
+		if ( NT_STATUS_EQUAL(NT_STATUS_ACCOUNT_RESTRICTION, result ) ) {
+			result = NT_STATUS_PASSWORD_RESTRICTION;
+		}
+	}
+
+done:
+
+	if (NT_STATUS_IS_OK(result)
+	    && (r->in.flags & WBFLAG_PAM_CACHED_LOGIN)
+	    && lp_winbind_offline_logon()) {
+		result = winbindd_update_creds_by_name(contact_domain, user,
+						       r->in.new_password);
+		/* Again, this happens when we login from gdm or xdm
+		 * and the password expires, *BUT* cached credentials
+		 * don't exist. winbindd_update_creds_by_name()
+		 * returns NT_STATUS_NO_SUCH_USER.
+		 * This is not a failure.
+		 * --- BoYang
+		 * */
+		if (NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER)) {
+			result = NT_STATUS_OK;
+		}
+
+		if (!NT_STATUS_IS_OK(result)) {
+			DEBUG(10, ("Failed to store creds: %s\n",
+				   nt_errstr(result)));
+			goto process_result;
+		}
+	}
+
+	if (!NT_STATUS_IS_OK(result) && !got_info && contact_domain) {
+
+		NTSTATUS policy_ret;
+
+		policy_ret = get_password_policy(contact_domain,
+						 p->mem_ctx,
+						 &info);
+
+		/* failure of this is non critical, it will just provide no
+		 * additional information to the client why the change has
+		 * failed - Guenther */
+
+		if (!NT_STATUS_IS_OK(policy_ret)) {
+			DEBUG(10,("Failed to get password policies: %s\n", nt_errstr(policy_ret)));
+			goto process_result;
+		}
+
+		*r->out.dominfo = talloc_steal(p->mem_ctx, info);
+	}
+
+process_result:
+
+	if (strequal(contact_domain->name, get_global_sam_name())) {
+		/* FIXME: internal rpc pipe does not cache handles yet */
+		if (b) {
+			if (is_valid_policy_hnd(&dom_pol)) {
+				NTSTATUS _result;
+				dcerpc_samr_Close(b,
+						  p->mem_ctx,
+						  &dom_pol,
+						  &_result);
+			}
+			TALLOC_FREE(cli);
+		}
+	}
+
+	DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+	      ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+	       domain,
+	       user,
+	       nt_errstr(result),
+	       nt_status_to_pam(result)));
+
+	return result;
+}
+
+NTSTATUS _wbint_PamLogOff(struct pipes_struct *p, struct wbint_PamLogOff *r)
+{
+	struct winbindd_domain *domain = wb_child_domain();
+	NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
+	pid_t client_pid;
+	uid_t user_uid;
+
+	if (domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	/* Cut client_pid to 32bit */
+	client_pid = r->in.client_pid;
+	if ((uint64_t)client_pid != r->in.client_pid) {
+		DBG_DEBUG("pid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* Cut uid to 32bit */
+	user_uid = r->in.uid;
+	if ((uint64_t)user_uid != r->in.uid) {
+		DBG_DEBUG("uid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	DBG_NOTICE("[%"PRIu32"]: pam dual logoff %s\n", client_pid, r->in.user);
+
+	if (!(r->in.flags & WBFLAG_PAM_KRB5)) {
+		result = NT_STATUS_OK;
+		goto process_result;
+	}
+
+	if ((r->in.krb5ccname == NULL) || (strlen(r->in.krb5ccname) == 0)) {
+		result = NT_STATUS_OK;
+		goto process_result;
+	}
+
+#ifdef HAVE_KRB5
+
+	if (user_uid == (uid_t)-1) {
+		DBG_DEBUG("Invalid uid for user '%s'\n", r->in.user);
+		goto process_result;
+	}
+
+	/* what we need here is to find the corresponding krb5 ccache name *we*
+	 * created for a given username and destroy it */
+
+	if (!ccache_entry_exists(r->in.user)) {
+		result = NT_STATUS_OK;
+		DBG_DEBUG("No entry found for user '%s'.\n", r->in.user);
+		goto process_result;
+	}
+
+	if (!ccache_entry_identical(r->in.user, user_uid, r->in.krb5ccname)) {
+		DBG_DEBUG("Cached entry differs for user '%s'\n", r->in.user);
+		goto process_result;
+	}
+
+	result = remove_ccache(r->in.user);
+	if (!NT_STATUS_IS_OK(result)) {
+		DBG_DEBUG("Failed to remove ccache for user '%s': %s\n",
+			  r->in.user, nt_errstr(result));
+		goto process_result;
+	}
+
+	/*
+	 * Remove any mlock'ed memory creds in the child
+	 * we might be using for krb5 ticket renewal.
+	 */
+
+	winbindd_delete_memory_creds(r->in.user);
+
+#else
+	result = NT_STATUS_NOT_SUPPORTED;
+#endif
+
+process_result:
+
+	return result;
+}
+
+/* Change user password with auth crap*/
+
+NTSTATUS _wbint_PamAuthCrapChangePassword(struct pipes_struct *p,
+				struct wbint_PamAuthCrapChangePassword *r)
+{
+	NTSTATUS result;
+	char *namespace = NULL;
+	char *domain = NULL;
+	char *user = NULL;
+	struct policy_handle dom_pol;
+	struct winbindd_domain *contact_domain = wb_child_domain();
+	struct rpc_pipe_client *cli = NULL;
+	struct dcerpc_binding_handle *b = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+	pid_t client_pid;
+
+	ZERO_STRUCT(dom_pol);
+
+	if (contact_domain == NULL) {
+		return NT_STATUS_REQUEST_NOT_ACCEPTED;
+	}
+
+	/* Cut client_pid to 32bit */
+	client_pid = r->in.client_pid;
+	if ((uint64_t)client_pid != r->in.client_pid) {
+		DBG_DEBUG("pid out of range\n");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	DBG_NOTICE("[%"PRIu32"]: pam change pswd auth crap domain: %s "
+		   "user: %s\n", client_pid, r->in.domain, r->in.user);
+
+	if (lp_winbind_offline_logon()) {
+		DEBUG(0,("Refusing password change as winbind offline logons are enabled. "));
+		DEBUGADD(0,("Changing passwords here would risk inconsistent logons\n"));
+		result = NT_STATUS_ACCESS_DENIED;
+		goto done;
+	}
+
+	if (r->in.domain != NULL && strlen(r->in.domain) > 0) {
+		user = talloc_strdup(frame, "");
+		namespace = talloc_strdup(frame, "");
+		domain = talloc_strdup(frame, r->in.domain);
+		if (domain == NULL || user == NULL || namespace == NULL) {
+			result = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+
+	} else {
+		bool ok;
+
+		ok = parse_domain_user(frame,
+				       r->in.user,
+				       &namespace,
+				       &domain,
+				       &user);
+		if (!ok) {
+			result = NT_STATUS_INVALID_PARAMETER;
+			goto done;
+		}
+
+		if (strlen(domain) == 0) {
+			DBG_NOTICE("no domain specified with username (%s) - "
+				   "failing auth\n", r->in.user);
+			result = NT_STATUS_NO_SUCH_USER;
+			goto done;
+		}
+	}
+
+	if (!*domain && lp_winbind_use_default_domain()) {
+		TALLOC_FREE(domain);
+		domain = talloc_strdup(frame, lp_workgroup());
+		if (domain == NULL) {
+			result = NT_STATUS_NO_MEMORY;
+			goto done;
+		}
+	}
+
+	if (!is_allowed_domain(domain)) {
+		DBG_NOTICE("Authentication failed for user [%s] "
+			   "from firewalled domain [%s]\n",
+			   r->in.user,
+			   domain);
+		result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+		goto done;
+	}
+
+	if(!*user) {
+		TALLOC_FREE(user);
+		user = talloc_strdup(frame, r->in.user);
+		if (user == NULL) {
+			result = NT_STATUS_NO_SUCH_USER;
+			goto done;
+		}
+	}
+
+	/* Get sam handle */
+
+	result = cm_connect_sam(contact_domain,
+				p->mem_ctx,
+				true,
+				&cli,
+				&dom_pol);
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
+		goto done;
+	}
+
+	b = cli->binding_handle;
+
+	result = rpccli_samr_chng_pswd_auth_crap(cli,
+						 p->mem_ctx,
+						 user,
+						 r->in.new_nt_pswd,
+						 r->in.old_nt_hash_enc,
+						 r->in.new_lm_pswd,
+						 r->in.old_lm_hash_enc);
+
+ done:
+
+	if (strequal(contact_domain->name, get_global_sam_name())) {
+		/* FIXME: internal rpc pipe does not cache handles yet */
+		if (b) {
+			if (is_valid_policy_hnd(&dom_pol)) {
+				NTSTATUS _result;
+				dcerpc_samr_Close(b,
+						  p->mem_ctx,
+						  &dom_pol,
+						  &_result);
+			}
+			TALLOC_FREE(cli);
+		}
+	}
+
+	DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+	      ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+	       domain, user,
+	       nt_errstr(result),
+	       nt_status_to_pam(result)));
+	TALLOC_FREE(frame);
+	return result;
+}
+
+#ifdef HAVE_KRB5
+static NTSTATUS extract_pac_vrfy_sigs(TALLOC_CTX *mem_ctx, DATA_BLOB pac_blob,
+				      struct PAC_DATA **p_pac_data)
+{
+	krb5_context krbctx = NULL;
+	krb5_error_code k5ret;
+	krb5_keytab keytab;
+	krb5_kt_cursor cursor;
+	krb5_keytab_entry entry;
+	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+
+	ZERO_STRUCT(entry);
+	ZERO_STRUCT(cursor);
+
+	k5ret = smb_krb5_init_context_common(&krbctx);
+	if (k5ret) {
+		DBG_ERR("kerberos init context failed (%s)\n",
+			error_message(k5ret));
+		status = krb5_to_nt_status(k5ret);
+		goto out;
+	}
+
+	k5ret =  gse_krb5_get_server_keytab(krbctx, &keytab);
+	if (k5ret) {
+		DEBUG(1, ("Failed to get keytab: %s\n",
+			  error_message(k5ret)));
+		status = krb5_to_nt_status(k5ret);
+		goto out_free;
+	}
+
+	k5ret = krb5_kt_start_seq_get(krbctx, keytab, &cursor);
+	if (k5ret) {
+		DEBUG(1, ("Failed to start seq: %s\n",
+			  error_message(k5ret)));
+		status = krb5_to_nt_status(k5ret);
+		goto out_keytab;
+	}
+
+	k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
+	while (k5ret == 0) {
+		status = kerberos_decode_pac(mem_ctx,
+					     pac_blob,
+					     krbctx,
+					     NULL, /* krbtgt_keyblock */
+					     KRB5_KT_KEY(&entry), /* service_keyblock */
+					     NULL, /* client_principal */
+					     0, /* tgs_authtime */
+					     p_pac_data);
+		if (NT_STATUS_IS_OK(status)) {
+			break;
+		}
+		k5ret = smb_krb5_kt_free_entry(krbctx, &entry);
+		k5ret = krb5_kt_next_entry(krbctx, keytab, &entry, &cursor);
+	}
+
+	k5ret = krb5_kt_end_seq_get(krbctx, keytab, &cursor);
+	if (k5ret) {
+		DEBUG(1, ("Failed to end seq: %s\n",
+			  error_message(k5ret)));
+	}
+out_keytab:
+	k5ret = krb5_kt_close(krbctx, keytab);
+	if (k5ret) {
+		DEBUG(1, ("Failed to close keytab: %s\n",
+			  error_message(k5ret)));
+	}
+out_free:
+	krb5_free_context(krbctx);
+out:
+	return status;
+}
+
+NTSTATUS winbindd_pam_auth_pac_verify(struct winbindd_cli_state *state,
+				      TALLOC_CTX *mem_ctx,
+				      bool *p_is_trusted,
+				      uint16_t *p_validation_level,
+				      union netr_Validation **p_validation)
+{
+	struct winbindd_request *req = state->request;
+	DATA_BLOB pac_blob;
+	struct PAC_DATA *pac_data = NULL;
+	struct PAC_LOGON_INFO *logon_info = NULL;
+	struct PAC_UPN_DNS_INFO *upn_dns_info = NULL;
+	struct netr_SamInfo6 *info6 = NULL;
+	uint16_t validation_level = 0;
+	union netr_Validation *validation = NULL;
+	struct netr_SamInfo3 *info3_copy = NULL;
+	NTSTATUS result;
+	bool is_trusted = false;
+	uint32_t i;
+	TALLOC_CTX *tmp_ctx = NULL;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (tmp_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	*p_is_trusted = false;
+	*p_validation_level = 0;
+	*p_validation = NULL;
+
+	pac_blob = data_blob_const(req->extra_data.data, req->extra_len);
+	result = extract_pac_vrfy_sigs(tmp_ctx, pac_blob, &pac_data);
+	if (NT_STATUS_IS_OK(result)) {
+		is_trusted = true;
+	}
+	if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)) {
+		/* Try without signature verification */
+		result = kerberos_decode_pac(tmp_ctx,
+					     pac_blob,
+					     NULL, /* krb5_context */
+					     NULL, /* krbtgt_keyblock */
+					     NULL, /* service_keyblock */
+					     NULL, /* client_principal */
+					     0, /* tgs_authtime */
+					     &pac_data);
+	}
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(1, ("Error during PAC signature verification: %s\n",
+			  nt_errstr(result)));
+		goto out;
+	}
+
+	for (i=0; i < pac_data->num_buffers; i++) {
+		if (pac_data->buffers[i].type == PAC_TYPE_LOGON_INFO) {
+			logon_info = pac_data->buffers[i].info->logon_info.info;
+			continue;
+		}
+		if (pac_data->buffers[i].type == PAC_TYPE_UPN_DNS_INFO) {
+			upn_dns_info = &pac_data->buffers[i].info->upn_dns_info;
+			continue;
+		}
+	}
+
+	result = create_info6_from_pac(tmp_ctx,
+				       logon_info,
+				       upn_dns_info,
+				       &info6);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto out;
+	}
+
+	if (!is_allowed_domain(info6->base.logon_domain.string)) {
+		DBG_NOTICE("Authentication failed for user [%s] "
+			   "from firewalled domain [%s]\n",
+			   info6->base.account_name.string,
+			   info6->base.logon_domain.string);
+		result = NT_STATUS_AUTHENTICATION_FIREWALL_FAILED;
+		goto out;
+	}
+
+	result = map_info6_to_validation(tmp_ctx,
+					 info6,
+					 &validation_level,
+					 &validation);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto out;
+	}
+
+	result = map_validation_to_info3(tmp_ctx,
+					 validation_level,
+					 validation,
+					 &info3_copy);
+	if (!NT_STATUS_IS_OK(result)) {
+		goto out;
+	}
+
+	if (is_trusted) {
+		/*
+		 * Signature verification succeeded, we can
+		 * trust the PAC and prime the netsamlogon
+		 * and name2sid caches. DO NOT DO THIS
+		 * in the signature verification failed
+		 * code path.
+		 */
+		struct winbindd_domain *domain = NULL;
+
+		netsamlogon_cache_store(NULL, info3_copy);
+
+		/*
+		 * We're in the parent here, so find the child
+		 * pointer from the PAC domain name.
+		 */
+		domain = find_lookup_domain_from_name(
+				info3_copy->base.logon_domain.string);
+		if (domain && domain->primary ) {
+			struct dom_sid user_sid;
+			struct dom_sid_buf buf;
+
+			sid_compose(&user_sid,
+				info3_copy->base.domain_sid,
+				info3_copy->base.rid);
+
+			cache_name2sid_trusted(domain,
+				info3_copy->base.logon_domain.string,
+				info3_copy->base.account_name.string,
+				SID_NAME_USER,
+				&user_sid);
+
+			DBG_INFO("PAC for user %s\\%s SID %s primed cache\n",
+				info3_copy->base.logon_domain.string,
+				info3_copy->base.account_name.string,
+				dom_sid_str_buf(&user_sid, &buf));
+		}
+	}
+
+	*p_is_trusted = is_trusted;
+	*p_validation_level = validation_level;
+	*p_validation = talloc_move(mem_ctx, &validation);
+
+	result = NT_STATUS_OK;
+out:
+	TALLOC_FREE(tmp_ctx);
+	return result;
+}
+#else /* HAVE_KRB5 */
+NTSTATUS winbindd_pam_auth_pac_verify(struct winbindd_cli_state *state,
+				      TALLOC_CTX *mem_ctx,
+				      bool *p_is_trusted,
+				      uint16_t *p_validation_level,
+				      union netr_Validation **p_validation);
+{
+
+	*p_is_trusted = false;
+	*p_validation_level = 0;
+	*p_validation = NULL;
+	return NT_STATUS_NO_SUCH_USER;
+}
+#endif /* HAVE_KRB5 */