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, 2856 insertions, 0 deletions

diff --git a/source3/utils/ntlm_auth.c b/source3/utils/ntlm_auth.c
new file mode 100644
index 0000000..6660a31
--- /dev/null
+++ b/source3/utils/ntlm_auth.c
@@ -0,0 +1,2856 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Winbind status program.
+
+   Copyright (C) Tim Potter      2000-2003
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
+   Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
+   Copyright (C) Robert O'Callahan 2006 (added cached credential code).
+   Copyright (C) Kai Blin <kai@samba.org> 2008
+   Copyright (C) Simo Sorce 2010
+
+   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 "lib/param/param.h"
+#include "lib/cmdline/cmdline.h"
+#include "libcli/security/security.h"
+#include "utils/ntlm_auth.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "auth/ntlmssp/ntlmssp.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_internal.h"
+#include "auth/credentials/credentials.h"
+#include "librpc/crypto/gse.h"
+#include "smb_krb5.h"
+#include "lib/util/tiniparser.h"
+#include "librpc/gen_ndr/krb5pac.h"
+#include "auth/common_auth.h"
+#include "source3/include/auth.h"
+#include "source3/auth/proto.h"
+#include "nsswitch/libwbclient/wbclient.h"
+#include "nsswitch/winbind_struct_protocol.h"
+#include "nsswitch/libwbclient/wbclient_internal.h"
+#include "lib/param/loadparm.h"
+#include "lib/util/base64.h"
+#include "cmdline_contexts.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "lib/util/string_wrappers.h"
+
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+
+#ifdef HAVE_KRB5
+#include "auth/kerberos/pac_utils.h"
+#endif
+
+#ifndef PAM_WINBIND_CONFIG_FILE
+#define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
+#endif
+
+#define WINBIND_KRB5_AUTH	0x00000080
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+#define INITIAL_BUFFER_SIZE 300
+#define MAX_BUFFER_SIZE 630000
+
+enum stdio_helper_mode {
+	SQUID_2_4_BASIC,
+	SQUID_2_5_BASIC,
+	SQUID_2_5_NTLMSSP,
+	NTLMSSP_CLIENT_1,
+	GSS_SPNEGO_SERVER,
+	GSS_SPNEGO_CLIENT,
+	NTLM_SERVER_1,
+	NTLM_CHANGE_PASSWORD_1,
+	NUM_HELPER_MODES
+};
+
+enum ntlm_auth_cli_state {
+	CLIENT_INITIAL = 0,
+	CLIENT_RESPONSE,
+	CLIENT_FINISHED,
+	CLIENT_ERROR
+};
+
+struct ntlm_auth_state {
+	TALLOC_CTX *mem_ctx;
+	enum stdio_helper_mode helper_mode;
+	enum ntlm_auth_cli_state cli_state;
+	struct ntlmssp_state *ntlmssp_state;
+	uint32_t neg_flags;
+	char *want_feature_list;
+	bool have_session_key;
+	DATA_BLOB session_key;
+	DATA_BLOB initial_message;
+	void *gensec_private_1;
+};
+typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state, char *buf,
+					int length, void **private2);
+
+static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
+				  struct loadparm_context *lp_ctx,
+				  char *buf, int length, void **private1);
+
+static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
+				 struct loadparm_context *lp_ctx,
+				 struct ntlm_auth_state *state,
+				 stdio_helper_function fn, void **private2);
+
+static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
+				      struct loadparm_context *lp_ctx,
+				      struct ntlm_auth_state *state,
+					char *buf, int length, void **private2);
+
+static const struct {
+	enum stdio_helper_mode mode;
+	const char *name;
+	stdio_helper_function fn;
+} stdio_helper_protocols[] = {
+	{ SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
+	{ SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
+	{ SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
+	{ NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
+	{ GSS_SPNEGO_SERVER, "gss-spnego", manage_gss_spnego_request},
+	{ GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
+	{ NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
+	{ NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
+	{ NUM_HELPER_MODES, NULL, NULL}
+};
+
+const char *opt_username;
+const char *opt_domain;
+const char *opt_workstation;
+const char *opt_password;
+static DATA_BLOB opt_challenge;
+static DATA_BLOB opt_lm_response;
+static DATA_BLOB opt_nt_response;
+static int request_lm_key;
+static int request_user_session_key;
+static int use_cached_creds;
+static int offline_logon;
+static int opt_allow_mschapv2;
+
+static const char *require_membership_of;
+static const char *require_membership_of_sid;
+static const char *opt_pam_winbind_conf;
+
+const char *opt_target_service;
+const char *opt_target_hostname;
+
+
+/* This is a bit hairy, but the basic idea is to do a password callback
+   to the calling application.  The callback comes from within gensec */
+
+static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode,
+					 struct loadparm_context *lp_ctx,
+					 struct ntlm_auth_state *state, char *buf, int length,
+					 void **password)
+{
+	DATA_BLOB in;
+	if (strlen(buf) < 2) {
+		DEBUG(1, ("query [%s] invalid\n", buf));
+		printf("BH Query invalid\n");
+		return;
+	}
+
+	if (strlen(buf) > 3) {
+		in = base64_decode_data_blob(buf + 3);
+	} else {
+		in = data_blob(NULL, 0);
+	}
+
+	if (strncmp(buf, "PW ", 3) == 0) {
+
+		*password = talloc_strndup(NULL,
+					   (const char *)in.data, in.length);
+
+		if (*password == NULL) {
+			DEBUG(1, ("Out of memory\n"));
+			printf("BH Out of memory\n");
+			data_blob_free(&in);
+			return;
+		}
+
+		printf("OK\n");
+		data_blob_free(&in);
+		return;
+	}
+	DEBUG(1, ("Asked for (and expected) a password\n"));
+	printf("BH Expected a password\n");
+	data_blob_free(&in);
+}
+
+/**
+ * Callback for password credentials.  This is not async, and when
+ * GENSEC and the credentials code is made async, it will look rather
+ * different.
+ */
+
+static const char *get_password(struct cli_credentials *credentials)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	char *password = NULL;
+	struct ntlm_auth_state *state;
+
+	state = talloc_zero(frame, struct ntlm_auth_state);
+	if (state == NULL) {
+		DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
+		fprintf(stderr, "ERR\n");
+		exit(1);
+	}
+
+	state->mem_ctx = state;
+
+	/* Ask for a password */
+	printf("PW\n");
+
+	manage_squid_request(NUM_HELPER_MODES /* bogus */, NULL, state, manage_gensec_get_pw_request, (void **)&password);
+	talloc_steal(credentials, password);
+	TALLOC_FREE(frame);
+	return password;
+}
+
+/**
+ * A limited set of features are defined with text strings as needed
+ * by ntlm_auth
+ *
+ */
+static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
+{
+	if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
+		DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
+		gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
+	}
+	if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
+		DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
+		gensec_want_feature(state, GENSEC_FEATURE_SIGN);
+	}
+	if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
+		DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
+		gensec_want_feature(state, GENSEC_FEATURE_SEAL);
+	}
+	if (in_list("NTLMSSP_FEATURE_CCACHE", feature_list, true)) {
+		DEBUG(10, ("want GENSEC_FEATURE_NTLM_CCACHE\n"));
+		gensec_want_feature(state, GENSEC_FEATURE_NTLM_CCACHE);
+	}
+}
+
+static char winbind_separator(void)
+{
+	struct wbcInterfaceDetails *details;
+	wbcErr ret;
+	static bool got_sep;
+	static char sep;
+
+	if (got_sep)
+		return sep;
+
+	ret = wbcInterfaceDetails(&details);
+	if (!WBC_ERROR_IS_OK(ret)) {
+		d_fprintf(stderr, "could not obtain winbind separator!\n");
+		return *lp_winbind_separator();
+	}
+
+	sep = details->winbind_separator;
+
+	wbcFreeMemory(details);
+
+	got_sep = True;
+
+	if (!sep) {
+		d_fprintf(stderr, "winbind separator was NULL!\n");
+		return *lp_winbind_separator();
+	}
+
+	return sep;
+}
+
+const char *get_winbind_domain(void)
+{
+	struct wbcInterfaceDetails *details;
+	wbcErr ret;
+
+	static fstring winbind_domain;
+	if (*winbind_domain) {
+		return winbind_domain;
+	}
+
+	/* Send off request */
+
+	ret = wbcInterfaceDetails(&details);
+	if (!WBC_ERROR_IS_OK(ret)) {
+		DEBUG(1, ("could not obtain winbind domain name!\n"));
+		return lp_workgroup();
+	}
+
+	fstrcpy(winbind_domain, details->netbios_domain);
+
+	wbcFreeMemory(details);
+
+	return winbind_domain;
+
+}
+
+const char *get_winbind_netbios_name(void)
+{
+	struct wbcInterfaceDetails *details;
+	wbcErr ret;
+
+	static fstring winbind_netbios_name;
+
+	if (*winbind_netbios_name) {
+		return winbind_netbios_name;
+	}
+
+	/* Send off request */
+
+	ret = wbcInterfaceDetails(&details);
+	if (!WBC_ERROR_IS_OK(ret)) {
+		DEBUG(1, ("could not obtain winbind netbios name!\n"));
+		return lp_netbios_name();
+	}
+
+	fstrcpy(winbind_netbios_name, details->netbios_name);
+
+	wbcFreeMemory(details);
+
+	return winbind_netbios_name;
+
+}
+
+DATA_BLOB get_challenge(void)
+{
+	static DATA_BLOB chal;
+	if (opt_challenge.length)
+		return opt_challenge;
+
+	chal = data_blob(NULL, 8);
+
+	generate_random_buffer(chal.data, chal.length);
+	return chal;
+}
+
+/* Copy of parse_domain_user from winbindd_util.c.  Parse a string of the
+   form DOMAIN/user into a domain and a user */
+
+static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
+				     fstring user)
+{
+
+	char *p = strchr(domuser,winbind_separator());
+
+	if (!p) {
+		return False;
+	}
+
+	fstrcpy(user, p+1);
+	fstrcpy(domain, domuser);
+	domain[PTR_DIFF(p, domuser)] = 0;
+	return strupper_m(domain);
+}
+
+static bool get_require_membership_sid(void) {
+	fstring domain, name, sidbuf;
+	struct wbcDomainSid sid;
+	enum wbcSidType type;
+	wbcErr ret;
+
+	if (!require_membership_of) {
+		return True;
+	}
+
+	if (require_membership_of_sid) {
+		return True;
+	}
+
+	/* Otherwise, ask winbindd for the name->sid request */
+
+	if (!parse_ntlm_auth_domain_user(require_membership_of,
+					 domain, name)) {
+		DEBUG(0, ("Could not parse %s into separate domain/name parts!\n",
+			  require_membership_of));
+		return False;
+	}
+
+	ret = wbcLookupName(domain, name, &sid, &type);
+	if (!WBC_ERROR_IS_OK(ret)) {
+		DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
+			  require_membership_of));
+		return False;
+	}
+
+	wbcSidToStringBuf(&sid, sidbuf, sizeof(sidbuf));
+
+	require_membership_of_sid = SMB_STRDUP(sidbuf);
+
+	if (require_membership_of_sid)
+		return True;
+
+	return False;
+}
+
+/*
+ * Get some configuration from pam_winbind.conf to see if we
+ * need to contact trusted domain
+ */
+
+int get_pam_winbind_config(void)
+{
+	int ctrl = 0;
+	struct tiniparser_dictionary *d = NULL;
+
+	if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
+		opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
+	}
+
+	d = tiniparser_load(opt_pam_winbind_conf);
+
+	if (!d) {
+		return 0;
+	}
+
+	if (tiniparser_getboolean(d, "global:krb5_auth", false)) {
+		ctrl |= WINBIND_KRB5_AUTH;
+	}
+
+	tiniparser_freedict(d);
+
+	return ctrl;
+}
+
+/* Authenticate a user with a plaintext password */
+
+static bool check_plaintext_auth(const char *user, const char *pass,
+				 bool stdout_diagnostics)
+{
+	struct winbindd_request request;
+	struct winbindd_response response;
+	wbcErr ret;
+
+	if (!get_require_membership_sid()) {
+		return False;
+	}
+
+	/* Send off request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	fstrcpy(request.data.auth.user, user);
+	fstrcpy(request.data.auth.pass, pass);
+	if (require_membership_of_sid) {
+		strlcpy(request.data.auth.require_membership_of_sid,
+			require_membership_of_sid,
+			sizeof(request.data.auth.require_membership_of_sid));
+	}
+
+	if (offline_logon) {
+		request.flags |= WBFLAG_PAM_CACHED_LOGIN;
+	}
+
+	ret = wbcRequestResponse(NULL, WINBINDD_PAM_AUTH,
+				 &request, &response);
+
+	/* Display response */
+
+	if (stdout_diagnostics) {
+		if (!WBC_ERROR_IS_OK(ret) && (response.data.auth.nt_status == 0)) {
+			d_fprintf(stderr, "Reading winbind reply failed! (0x01)\n");
+		}
+
+		d_printf("%s: %s (0x%x)\n",
+			 response.data.auth.nt_status_string,
+			 response.data.auth.error_string,
+			 response.data.auth.nt_status);
+	} else {
+		if (!WBC_ERROR_IS_OK(ret) && (response.data.auth.nt_status == 0)) {
+			DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
+		}
+
+		DEBUG(3, ("%s: %s (0x%x)\n",
+			  response.data.auth.nt_status_string,
+			  response.data.auth.error_string,
+			  response.data.auth.nt_status));
+	}
+
+	return WBC_ERROR_IS_OK(ret);
+}
+
+/* authenticate a user with an encrypted username/password */
+
+NTSTATUS contact_winbind_auth_crap(const char *username,
+				   const char *domain,
+				   const char *workstation,
+				   const DATA_BLOB *challenge,
+				   const DATA_BLOB *lm_response,
+				   const DATA_BLOB *nt_response,
+				   uint32_t flags,
+				   uint32_t extra_logon_parameters,
+				   uint8_t lm_key[8],
+				   uint8_t user_session_key[16],
+				   uint8_t *pauthoritative,
+				   char **error_string,
+				   char **unix_name)
+{
+	NTSTATUS nt_status;
+	wbcErr ret;
+	struct winbindd_request request;
+	struct winbindd_response response;
+
+	*pauthoritative = 1;
+
+	if (!get_require_membership_sid()) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	request.flags = flags;
+
+	request.data.auth_crap.logon_parameters = extra_logon_parameters
+		| MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
+
+	if (opt_allow_mschapv2) {
+			request.data.auth_crap.logon_parameters |= MSV1_0_ALLOW_MSVCHAPV2;
+	}
+
+	if (require_membership_of_sid)
+		fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
+
+        fstrcpy(request.data.auth_crap.user, username);
+	fstrcpy(request.data.auth_crap.domain, domain);
+
+	fstrcpy(request.data.auth_crap.workstation,
+		workstation);
+
+	memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
+
+	if (lm_response && lm_response->length) {
+		size_t capped_lm_response_len = MIN(
+			lm_response->length,
+			sizeof(request.data.auth_crap.lm_resp));
+
+		memcpy(request.data.auth_crap.lm_resp,
+		       lm_response->data,
+		       capped_lm_response_len);
+		request.data.auth_crap.lm_resp_len = capped_lm_response_len;
+	}
+
+	if (nt_response && nt_response->length) {
+		if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
+			request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
+			request.extra_len = nt_response->length;
+			request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
+			if (request.extra_data.data == NULL) {
+				return NT_STATUS_NO_MEMORY;
+			}
+			memcpy(request.extra_data.data, nt_response->data,
+			       nt_response->length);
+
+		} else {
+			memcpy(request.data.auth_crap.nt_resp,
+			       nt_response->data, nt_response->length);
+		}
+                request.data.auth_crap.nt_resp_len = nt_response->length;
+	}
+
+	ret = wbcRequestResponsePriv(
+		NULL,
+		WINBINDD_PAM_AUTH_CRAP,
+		&request,
+		&response);
+	SAFE_FREE(request.extra_data.data);
+
+	/* Display response */
+
+	if (!WBC_ERROR_IS_OK(ret) && (response.data.auth.nt_status == 0)) {
+		nt_status = NT_STATUS_UNSUCCESSFUL;
+		if (error_string)
+			*error_string = smb_xstrdup("Reading winbind reply failed!");
+		winbindd_free_response(&response);
+		return nt_status;
+	}
+
+	nt_status = (NT_STATUS(response.data.auth.nt_status));
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		if (error_string)
+			*error_string = smb_xstrdup(response.data.auth.error_string);
+		*pauthoritative = response.data.auth.authoritative;
+		winbindd_free_response(&response);
+		return nt_status;
+	}
+
+	if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
+		memcpy(lm_key, response.data.auth.first_8_lm_hash,
+		       sizeof(response.data.auth.first_8_lm_hash));
+	}
+	if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
+		memcpy(user_session_key, response.data.auth.user_session_key,
+			sizeof(response.data.auth.user_session_key));
+	}
+
+	if (flags & WBFLAG_PAM_UNIX_NAME) {
+		*unix_name = SMB_STRDUP(response.data.auth.unix_username);
+		if (!*unix_name) {
+			winbindd_free_response(&response);
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	winbindd_free_response(&response);
+	return nt_status;
+}
+
+/* contact server to change user password using auth crap */
+static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
+						      const char *domain,
+						      const DATA_BLOB new_nt_pswd,
+						      const DATA_BLOB old_nt_hash_enc,
+						      const DATA_BLOB new_lm_pswd,
+						      const DATA_BLOB old_lm_hash_enc,
+						      char  **error_string)
+{
+	NTSTATUS nt_status;
+	wbcErr ret;
+	struct winbindd_request request;
+	struct winbindd_response response;
+
+	if (!get_require_membership_sid())
+	{
+		if(error_string)
+			*error_string = smb_xstrdup("Can't get membership sid.");
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	if(username != NULL)
+		fstrcpy(request.data.chng_pswd_auth_crap.user, username);
+	if(domain != NULL)
+		fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
+
+	if(new_nt_pswd.length)
+	{
+		memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
+		request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
+	}
+
+	if(old_nt_hash_enc.length)
+	{
+		memcpy(request.data.chng_pswd_auth_crap.old_nt_hash_enc, old_nt_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_nt_hash_enc));
+		request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
+	}
+
+	if(new_lm_pswd.length)
+	{
+		memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
+		request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
+	}
+
+	if(old_lm_hash_enc.length)
+	{
+		memcpy(request.data.chng_pswd_auth_crap.old_lm_hash_enc, old_lm_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_lm_hash_enc));
+		request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
+	}
+
+	ret = wbcRequestResponse(NULL, WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP,
+				 &request, &response);
+
+	/* Display response */
+
+	if (!WBC_ERROR_IS_OK(ret) && (response.data.auth.nt_status == 0))
+	{
+		nt_status = NT_STATUS_UNSUCCESSFUL;
+		if (error_string)
+			*error_string = smb_xstrdup("Reading winbind reply failed!");
+		winbindd_free_response(&response);
+		return nt_status;
+	}
+
+	nt_status = (NT_STATUS(response.data.auth.nt_status));
+	if (!NT_STATUS_IS_OK(nt_status))
+	{
+		if (error_string)
+			*error_string = smb_xstrdup(response.data.auth.error_string);
+		winbindd_free_response(&response);
+		return nt_status;
+	}
+
+	winbindd_free_response(&response);
+
+    return nt_status;
+}
+
+/*
+ * This function does not create a full auth_session_info, just enough
+ * for the caller to get the "unix" username
+ */
+static NTSTATUS ntlm_auth_generate_session_info(struct auth4_context *auth_context,
+						TALLOC_CTX *mem_ctx,
+						void *server_returned_info,
+						const char *original_user_name,
+						uint32_t session_info_flags,
+						struct auth_session_info **session_info_out)
+{
+	const char *unix_username = (const char *)server_returned_info;
+	struct dom_sid *sids = NULL;
+	struct auth_session_info *session_info = NULL;
+
+	session_info = talloc_zero(mem_ctx, struct auth_session_info);
+	if (session_info == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
+	if (session_info->unix_info == NULL) {
+		TALLOC_FREE(session_info);
+		return NT_STATUS_NO_MEMORY;
+	}
+	session_info->unix_info->unix_name = talloc_strdup(session_info->unix_info,
+							   unix_username);
+	if (session_info->unix_info->unix_name == NULL) {
+		TALLOC_FREE(session_info);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/*
+	 * This is not a full session_info - it is not created
+	 * correctly and misses any claims etc, because all we
+	 * actually use in the caller is the unix username.
+	 *
+	 * Therefore so no claims need to be added and
+	 * se_access_check() will never run.
+	 */
+	session_info->security_token
+		= security_token_initialise(talloc_tos(),
+					    CLAIMS_EVALUATION_INVALID_STATE);
+	if (session_info->security_token == NULL) {
+		TALLOC_FREE(session_info);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	sids = talloc_zero_array(session_info->security_token,
+				 struct dom_sid, 3);
+	if (sids == NULL) {
+		TALLOC_FREE(session_info);
+		return NT_STATUS_NO_MEMORY;
+	}
+	sid_copy(&sids[0], &global_sid_World);
+	sid_copy(&sids[1], &global_sid_Network);
+	sid_copy(&sids[2], &global_sid_Authenticated_Users);
+
+	session_info->security_token->num_sids = talloc_array_length(sids);
+	session_info->security_token->sids = sids;
+
+	*session_info_out = session_info;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS ntlm_auth_generate_session_info_pac(struct auth4_context *auth_ctx,
+						    TALLOC_CTX *mem_ctx,
+						    struct smb_krb5_context *smb_krb5_context,
+						    DATA_BLOB *pac_blob,
+						    const char *princ_name,
+						    const struct tsocket_address *remote_address,
+						    uint32_t session_info_flags,
+						    struct auth_session_info **session_info)
+{
+	TALLOC_CTX *tmp_ctx;
+	struct PAC_LOGON_INFO *logon_info = NULL;
+	char *unixuser;
+	NTSTATUS status;
+	const char *domain = "";
+	const char *user = "";
+
+	tmp_ctx = talloc_new(mem_ctx);
+	if (!tmp_ctx) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (pac_blob) {
+#ifdef HAVE_KRB5
+		status = kerberos_pac_logon_info(tmp_ctx, *pac_blob, NULL, NULL,
+						 NULL, NULL, 0, &logon_info);
+#else
+		status = NT_STATUS_ACCESS_DENIED;
+#endif
+		if (!NT_STATUS_IS_OK(status)) {
+			goto done;
+		}
+	} else {
+		status = NT_STATUS_ACCESS_DENIED;
+		DBG_WARNING("Kerberos ticket for[%s] has no PAC: %s\n",
+			    princ_name, nt_errstr(status));
+		goto done;
+	}
+
+	if (logon_info->info3.base.account_name.string != NULL) {
+		user = logon_info->info3.base.account_name.string;
+	} else {
+		user = "";
+	}
+	if (logon_info->info3.base.logon_domain.string != NULL) {
+		domain = logon_info->info3.base.logon_domain.string;
+	} else {
+		domain = "";
+	}
+
+	if (strlen(user) == 0 || strlen(domain) == 0) {
+		status = NT_STATUS_ACCESS_DENIED;
+		DBG_WARNING("Kerberos ticket for[%s] has invalid "
+			    "account_name[%s]/logon_domain[%s]: %s\n",
+			    princ_name,
+			    logon_info->info3.base.account_name.string,
+			    logon_info->info3.base.logon_domain.string,
+			    nt_errstr(status));
+		goto done;
+	}
+
+	DBG_NOTICE("Kerberos ticket principal name is [%s] "
+		   "account_name[%s]/logon_domain[%s]\n",
+		   princ_name, user, domain);
+
+	if (!strequal(domain, lp_workgroup())) {
+		if (!lp_allow_trusted_domains()) {
+			status = NT_STATUS_LOGON_FAILURE;
+			goto done;
+		}
+	}
+
+	unixuser = talloc_asprintf(tmp_ctx, "%s%c%s", domain, winbind_separator(), user);
+	if (!unixuser) {
+		status = NT_STATUS_NO_MEMORY;
+		goto done;
+	}
+
+	status = ntlm_auth_generate_session_info(auth_ctx, mem_ctx, unixuser, NULL, session_info_flags, session_info);
+
+done:
+	TALLOC_FREE(tmp_ctx);
+	return status;
+}
+
+
+
+/**
+ * Return the challenge as determined by the authentication subsystem
+ * @return an 8 byte random challenge
+ */
+
+static NTSTATUS ntlm_auth_get_challenge(struct auth4_context *auth_ctx,
+					uint8_t chal[8])
+{
+	if (auth_ctx->challenge.data.length == 8) {
+		DEBUG(5, ("auth_get_challenge: returning previous challenge by module %s (normal)\n",
+			  auth_ctx->challenge.set_by));
+		memcpy(chal, auth_ctx->challenge.data.data, 8);
+		return NT_STATUS_OK;
+	}
+
+	if (!auth_ctx->challenge.set_by) {
+		generate_random_buffer(chal, 8);
+
+		auth_ctx->challenge.data		= data_blob_talloc(auth_ctx, chal, 8);
+		NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
+		auth_ctx->challenge.set_by		= "random";
+	}
+
+	DEBUG(10,("auth_get_challenge: challenge set by %s\n",
+		 auth_ctx->challenge.set_by));
+
+	return NT_STATUS_OK;
+}
+
+/**
+ * NTLM2 authentication modifies the effective challenge,
+ * @param challenge The new challenge value
+ */
+static NTSTATUS ntlm_auth_set_challenge(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by)
+{
+	auth_ctx->challenge.set_by = talloc_strdup(auth_ctx, set_by);
+	NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.set_by);
+
+	auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
+	NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
+
+	return NT_STATUS_OK;
+}
+
+/**
+ * Check the password on an NTLMSSP login.
+ *
+ * Return the session keys used on the connection.
+ */
+
+struct winbind_pw_check_state {
+	uint8_t authoritative;
+	void *server_info;
+	DATA_BLOB nt_session_key;
+	DATA_BLOB lm_session_key;
+};
+
+static struct tevent_req *winbind_pw_check_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct auth4_context *auth4_context,
+	const struct auth_usersupplied_info *user_info)
+{
+	struct tevent_req *req = NULL;
+	struct winbind_pw_check_state *state = NULL;
+	NTSTATUS nt_status;
+	char *error_string = NULL;
+	uint8_t lm_key[8];
+	uint8_t user_sess_key[16];
+	char *unix_name = NULL;
+
+	req = tevent_req_create(
+		mem_ctx, &state, struct winbind_pw_check_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	nt_status = contact_winbind_auth_crap(
+		user_info->client.account_name,
+		user_info->client.domain_name,
+		user_info->workstation_name,
+		&auth4_context->challenge.data,
+		&user_info->password.response.lanman,
+		&user_info->password.response.nt,
+		WBFLAG_PAM_LMKEY |
+		WBFLAG_PAM_USER_SESSION_KEY |
+		WBFLAG_PAM_UNIX_NAME,
+		0,
+		lm_key, user_sess_key,
+		&state->authoritative,
+		&error_string,
+		&unix_name);
+
+	if (tevent_req_nterror(req, nt_status)) {
+		if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
+			DBG_ERR("Login for user [%s]\\[%s]@[%s] failed due "
+				"to [%s]\n",
+				user_info->client.domain_name,
+				user_info->client.account_name,
+				user_info->workstation_name,
+				error_string ?
+				error_string :
+				"unknown error (NULL)");
+		} else {
+			DBG_NOTICE("Login for user [%s]\\[%s]@[%s] failed due "
+				   "to [%s]\n",
+				   user_info->client.domain_name,
+				   user_info->client.account_name,
+				   user_info->workstation_name,
+				   error_string ?
+				   error_string :
+				   "unknown error (NULL)");
+		}
+		goto done;
+	}
+
+	if (!all_zero(lm_key, 8)) {
+		state->lm_session_key = data_blob_talloc(state, NULL, 16);
+		if (tevent_req_nomem(state->lm_session_key.data, req)) {
+			goto done;
+		}
+		memcpy(state->lm_session_key.data, lm_key, 8);
+		memset(state->lm_session_key.data+8, '\0', 8);
+	}
+	if (!all_zero(user_sess_key, 16)) {
+		state->nt_session_key = data_blob_talloc(
+			state, user_sess_key, 16);
+		if (tevent_req_nomem(state->nt_session_key.data, req)) {
+			goto done;
+		}
+	}
+	state->server_info = talloc_strdup(state, unix_name);
+	if (tevent_req_nomem(state->server_info, req)) {
+		goto done;
+	}
+	tevent_req_done(req);
+
+done:
+	SAFE_FREE(error_string);
+	SAFE_FREE(unix_name);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS winbind_pw_check_recv(struct tevent_req *req,
+				      TALLOC_CTX *mem_ctx,
+				      uint8_t *pauthoritative,
+				      void **server_returned_info,
+				      DATA_BLOB *nt_session_key,
+				      DATA_BLOB *lm_session_key)
+{
+	struct winbind_pw_check_state *state = tevent_req_data(
+		req, struct winbind_pw_check_state);
+	NTSTATUS status;
+
+	if (pauthoritative != NULL) {
+		*pauthoritative = state->authoritative;
+	}
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+
+	if (server_returned_info != NULL) {
+		*server_returned_info = talloc_move(
+			mem_ctx, &state->server_info);
+	}
+	if (nt_session_key != NULL) {
+		*nt_session_key = (DATA_BLOB) {
+			.data = talloc_move(
+				mem_ctx, &state->nt_session_key.data),
+			.length = state->nt_session_key.length,
+		};
+	}
+	if (lm_session_key != NULL) {
+		*lm_session_key = (DATA_BLOB) {
+			.data = talloc_move(
+				mem_ctx, &state->lm_session_key.data),
+			.length = state->lm_session_key.length,
+		};
+	}
+
+	return NT_STATUS_OK;
+}
+
+struct local_pw_check_state {
+	uint8_t authoritative;
+	void *server_info;
+	DATA_BLOB nt_session_key;
+	DATA_BLOB lm_session_key;
+};
+
+static struct tevent_req *local_pw_check_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct auth4_context *auth4_context,
+	const struct auth_usersupplied_info *user_info)
+{
+	struct tevent_req *req = NULL;
+	struct local_pw_check_state *state = NULL;
+	struct samr_Password lm_pw, nt_pw;
+	NTSTATUS nt_status;
+
+	req = tevent_req_create(
+		mem_ctx, &state, struct local_pw_check_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->authoritative = 1;
+
+	nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
+
+	nt_status = ntlm_password_check(
+		state,
+		true,
+		NTLM_AUTH_ON,
+		0,
+		&auth4_context->challenge.data,
+		&user_info->password.response.lanman,
+		&user_info->password.response.nt,
+		user_info->client.account_name,
+		user_info->client.account_name,
+		user_info->client.domain_name,
+		&lm_pw,
+		&nt_pw,
+		&state->nt_session_key,
+		&state->lm_session_key);
+
+	if (tevent_req_nterror(req, nt_status)) {
+		DBG_NOTICE("Login for user [%s]\\[%s]@[%s] failed due to "
+			   "[%s]\n",
+			   user_info->client.domain_name,
+			   user_info->client.account_name,
+			   user_info->workstation_name,
+			   nt_errstr(nt_status));
+		return tevent_req_post(req, ev);
+	}
+
+	state->server_info = talloc_asprintf(
+		state,
+		"%s%c%s",
+		user_info->client.domain_name,
+		*lp_winbind_separator(),
+		user_info->client.account_name);
+	if (tevent_req_nomem(state->server_info, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	tevent_req_done(req);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS local_pw_check_recv(struct tevent_req *req,
+				    TALLOC_CTX *mem_ctx,
+				    uint8_t *pauthoritative,
+				    void **server_returned_info,
+				    DATA_BLOB *nt_session_key,
+				    DATA_BLOB *lm_session_key)
+{
+	struct local_pw_check_state *state = tevent_req_data(
+		req, struct local_pw_check_state);
+	NTSTATUS status;
+
+	if (pauthoritative != NULL) {
+		*pauthoritative = state->authoritative;
+	}
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+
+	if (server_returned_info != NULL) {
+		*server_returned_info = talloc_move(
+			mem_ctx, &state->server_info);
+	}
+	if (nt_session_key != NULL) {
+		*nt_session_key = (DATA_BLOB) {
+			.data = talloc_move(
+				mem_ctx, &state->nt_session_key.data),
+			.length = state->nt_session_key.length,
+		};
+	}
+	if (lm_session_key != NULL) {
+		*lm_session_key = (DATA_BLOB) {
+			.data = talloc_move(
+				mem_ctx, &state->lm_session_key.data),
+			.length = state->lm_session_key.length,
+		};
+	}
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS ntlm_auth_prepare_gensec_client(TALLOC_CTX *mem_ctx,
+						struct loadparm_context *lp_ctx,
+						struct gensec_security **gensec_security_out)
+{
+	struct gensec_security *gensec_security = NULL;
+	NTSTATUS nt_status;
+	TALLOC_CTX *tmp_ctx;
+	const struct gensec_security_ops **backends = NULL;
+	struct gensec_settings *gensec_settings = NULL;
+	size_t idx = 0;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+	gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
+	if (gensec_settings == NULL) {
+		DEBUG(10, ("lpcfg_gensec_settings failed\n"));
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	backends = talloc_zero_array(gensec_settings,
+				     const struct gensec_security_ops *, 4);
+	if (backends == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+	gensec_settings->backends = backends;
+
+	gensec_init();
+
+	/* These need to be in priority order, krb5 before NTLMSSP */
+#if defined(HAVE_KRB5)
+	backends[idx++] = &gensec_gse_krb5_security_ops;
+#endif
+
+	backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_NTLMSSP);
+
+	backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
+
+	nt_status = gensec_client_start(NULL, &gensec_security,
+					gensec_settings);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(tmp_ctx);
+		return nt_status;
+	}
+
+	talloc_unlink(tmp_ctx, gensec_settings);
+
+	if (opt_target_service != NULL) {
+		nt_status = gensec_set_target_service(gensec_security,
+						      opt_target_service);
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			TALLOC_FREE(tmp_ctx);
+			return nt_status;
+		}
+	}
+
+	if (opt_target_hostname != NULL) {
+		nt_status = gensec_set_target_hostname(gensec_security,
+						       opt_target_hostname);
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			TALLOC_FREE(tmp_ctx);
+			return nt_status;
+		}
+	}
+
+	*gensec_security_out = talloc_steal(mem_ctx, gensec_security);
+	TALLOC_FREE(tmp_ctx);
+	return NT_STATUS_OK;
+}
+
+static struct auth4_context *make_auth4_context_ntlm_auth(TALLOC_CTX *mem_ctx, bool local_pw)
+{
+	struct auth4_context *auth4_context = talloc_zero(mem_ctx, struct auth4_context);
+	if (auth4_context == NULL) {
+		DEBUG(10, ("failed to allocate auth4_context\n"));
+		return NULL;
+	}
+	auth4_context->generate_session_info = ntlm_auth_generate_session_info;
+	auth4_context->generate_session_info_pac = ntlm_auth_generate_session_info_pac;
+	auth4_context->get_ntlm_challenge = ntlm_auth_get_challenge;
+	auth4_context->set_ntlm_challenge = ntlm_auth_set_challenge;
+	if (local_pw) {
+		auth4_context->check_ntlm_password_send = local_pw_check_send;
+		auth4_context->check_ntlm_password_recv = local_pw_check_recv;
+	} else {
+		auth4_context->check_ntlm_password_send =
+			winbind_pw_check_send;
+		auth4_context->check_ntlm_password_recv =
+			winbind_pw_check_recv;
+	}
+	auth4_context->private_data = NULL;
+	return auth4_context;
+}
+
+static NTSTATUS ntlm_auth_prepare_gensec_server(TALLOC_CTX *mem_ctx,
+						struct loadparm_context *lp_ctx,
+						struct gensec_security **gensec_security_out)
+{
+	struct gensec_security *gensec_security;
+	NTSTATUS nt_status;
+
+	TALLOC_CTX *tmp_ctx;
+	const struct gensec_security_ops **backends;
+	struct gensec_settings *gensec_settings;
+	size_t idx = 0;
+	struct cli_credentials *server_credentials;
+
+	struct auth4_context *auth4_context;
+
+	tmp_ctx = talloc_new(mem_ctx);
+	NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+	auth4_context = make_auth4_context_ntlm_auth(tmp_ctx, opt_password);
+	if (auth4_context == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
+	if (lp_ctx == NULL) {
+		DEBUG(10, ("lpcfg_gensec_settings failed\n"));
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/*
+	 * This should be a 'netbios domain -> DNS domain'
+	 * mapping, and can currently validly return NULL on
+	 * poorly configured systems.
+	 *
+	 * This is used for the NTLMSSP server
+	 *
+	 */
+	if (opt_password) {
+		gensec_settings->server_netbios_name = lp_netbios_name();
+		gensec_settings->server_netbios_domain = lp_workgroup();
+	} else {
+		gensec_settings->server_netbios_name = get_winbind_netbios_name();
+		gensec_settings->server_netbios_domain = get_winbind_domain();
+	}
+
+	gensec_settings->server_dns_domain = strlower_talloc(gensec_settings,
+							     get_mydnsdomname(talloc_tos()));
+	gensec_settings->server_dns_name = strlower_talloc(gensec_settings,
+							   get_mydnsfullname());
+
+	backends = talloc_zero_array(gensec_settings,
+				     const struct gensec_security_ops *, 4);
+
+	if (backends == NULL) {
+		TALLOC_FREE(tmp_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+	gensec_settings->backends = backends;
+
+	gensec_init();
+
+	/* These need to be in priority order, krb5 before NTLMSSP */
+#if defined(HAVE_KRB5)
+	backends[idx++] = &gensec_gse_krb5_security_ops;
+#endif
+
+	backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_NTLMSSP);
+
+	backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
+
+	/*
+	 * This is anonymous for now, because we just use it
+	 * to set the kerberos state at the moment
+	 */
+	server_credentials = cli_credentials_init_anon(tmp_ctx);
+	if (!server_credentials) {
+		DBG_ERR("Failed to init server credentials\n");
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	cli_credentials_set_conf(server_credentials, lp_ctx);
+
+	if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC || lp_security() == SEC_ADS || USE_KERBEROS_KEYTAB) {
+		cli_credentials_set_kerberos_state(server_credentials,
+						   CRED_USE_KERBEROS_DESIRED,
+						   CRED_SPECIFIED);
+	} else {
+		cli_credentials_set_kerberos_state(server_credentials,
+						   CRED_USE_KERBEROS_DISABLED,
+						   CRED_SPECIFIED);
+	}
+
+	nt_status = gensec_server_start(tmp_ctx, gensec_settings,
+					auth4_context, &gensec_security);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(tmp_ctx);
+		return nt_status;
+	}
+
+	gensec_set_credentials(gensec_security, server_credentials);
+
+	/*
+	 * TODO: Allow the caller to pass their own description here
+	 * via a command-line option
+	 */
+	nt_status = gensec_set_target_service_description(gensec_security,
+							  "ntlm_auth");
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(tmp_ctx);
+		return nt_status;
+	}
+
+	talloc_unlink(tmp_ctx, lp_ctx);
+	talloc_unlink(tmp_ctx, server_credentials);
+	talloc_unlink(tmp_ctx, gensec_settings);
+	talloc_unlink(tmp_ctx, auth4_context);
+
+	*gensec_security_out = talloc_steal(mem_ctx, gensec_security);
+	TALLOC_FREE(tmp_ctx);
+	return NT_STATUS_OK;
+}
+
+static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+						char *buf, int length, void **private2)
+{
+	manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
+	return;
+}
+
+static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+					char *buf, int length, void **private2)
+{
+	char *user, *pass;
+	user=buf;
+
+	pass=(char *)memchr(buf,' ',length);
+	if (!pass) {
+		DEBUG(2, ("Password not found. Denying access\n"));
+		printf("ERR\n");
+		return;
+	}
+	*pass='\0';
+	pass++;
+
+	if (state->helper_mode == SQUID_2_5_BASIC) {
+		char *end = rfc1738_unescape(user);
+		if (end == NULL || (end - user) != strlen(user)) {
+			DEBUG(2, ("Badly rfc1738 encoded username: %s; "
+				  "denying access\n", user));
+			printf("ERR\n");
+			return;
+		}
+		end = rfc1738_unescape(pass);
+		if (end == NULL || (end - pass) != strlen(pass)) {
+			DEBUG(2, ("Badly encoded password for %s; "
+				  "denying access\n", user));
+			printf("ERR\n");
+			return;
+		}
+	}
+
+	if (check_plaintext_auth(user, pass, False)) {
+		printf("OK\n");
+	} else {
+		printf("ERR\n");
+	}
+}
+
+static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
+				  struct loadparm_context *lp_ctx,
+				  char *buf, int length, void **private1)
+{
+	DATA_BLOB in;
+	DATA_BLOB out = data_blob(NULL, 0);
+	char *out_base64 = NULL;
+	const char *reply_arg = NULL;
+	struct gensec_ntlm_state {
+		struct gensec_security *gensec_state;
+		const char *set_password;
+	};
+	struct gensec_ntlm_state *state;
+
+	NTSTATUS nt_status;
+	bool first = false;
+	const char *reply_code;
+	struct cli_credentials *creds;
+
+	static char *want_feature_list = NULL;
+	static DATA_BLOB session_key;
+
+	TALLOC_CTX *mem_ctx;
+
+	mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
+	if (mem_ctx == NULL) {
+		printf("BH No Memory\n");
+		exit(1);
+	}
+
+	if (*private1) {
+		state = talloc_get_type(*private1, struct gensec_ntlm_state);
+		if (state == NULL) {
+			DBG_WARNING("*private1 is of type %s\n",
+				    talloc_get_name(*private1));
+			printf("BH *private1 is of type %s\n",
+			       talloc_get_name(*private1));
+			exit(1);
+		}
+	} else {
+		state = talloc_zero(NULL, struct gensec_ntlm_state);
+		if (!state) {
+			printf("BH No Memory\n");
+			exit(1);
+		}
+		*private1 = state;
+		if (opt_password) {
+			state->set_password = opt_password;
+		}
+	}
+
+	if (strlen(buf) < 2) {
+		DEBUG(1, ("query [%s] invalid\n", buf));
+		printf("BH Query invalid\n");
+		talloc_free(mem_ctx);
+		return;
+	}
+
+	if (strlen(buf) > 3) {
+		if(strncmp(buf, "SF ", 3) == 0) {
+			DEBUG(10, ("Setting flags to negotiate\n"));
+			talloc_free(want_feature_list);
+			want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
+			printf("OK\n");
+			talloc_free(mem_ctx);
+			return;
+		}
+		in = base64_decode_data_blob_talloc(mem_ctx, buf + 3);
+	} else {
+		in = data_blob(NULL, 0);
+	}
+
+	if (strncmp(buf, "YR", 2) == 0) {
+		if (state->gensec_state) {
+			talloc_free(state->gensec_state);
+			state->gensec_state = NULL;
+		}
+	} else if ( (strncmp(buf, "OK", 2) == 0)) {
+		/* Just return BH, like ntlm_auth from Samba 3 does. */
+		printf("BH Command expected\n");
+		talloc_free(mem_ctx);
+		return;
+	} else if ( (strncmp(buf, "TT ", 3) != 0) &&
+		    (strncmp(buf, "KK ", 3) != 0) &&
+		    (strncmp(buf, "AF ", 3) != 0) &&
+		    (strncmp(buf, "NA ", 3) != 0) &&
+		    (strncmp(buf, "UG", 2) != 0) &&
+		    (strncmp(buf, "PW ", 3) != 0) &&
+		    (strncmp(buf, "GK", 2) != 0) &&
+		    (strncmp(buf, "GF", 2) != 0)) {
+		DEBUG(1, ("SPNEGO request [%s] invalid prefix\n", buf));
+		printf("BH SPNEGO request invalid prefix\n");
+		talloc_free(mem_ctx);
+		return;
+	}
+
+	/* setup gensec */
+	if (!(state->gensec_state)) {
+		switch (stdio_helper_mode) {
+		case GSS_SPNEGO_CLIENT:
+			/*
+			 * cached credentials are only supported by
+			 * NTLMSSP_CLIENT_1 for now.
+			 */
+			use_cached_creds = false;
+			FALL_THROUGH;
+		case NTLMSSP_CLIENT_1:
+			/* setup the client side */
+
+			if (state->set_password != NULL) {
+				use_cached_creds = false;
+			}
+
+			if (use_cached_creds) {
+				struct wbcCredentialCacheParams params;
+				struct wbcCredentialCacheInfo *info = NULL;
+				struct wbcAuthErrorInfo *error = NULL;
+				wbcErr wbc_status;
+
+				params.account_name = opt_username;
+				params.domain_name = opt_domain;
+				params.level = WBC_CREDENTIAL_CACHE_LEVEL_NTLMSSP;
+				params.num_blobs = 0;
+				params.blobs = NULL;
+
+				wbc_status = wbcCredentialCache(&params, &info,
+								&error);
+				wbcFreeMemory(error);
+				if (!WBC_ERROR_IS_OK(wbc_status)) {
+					use_cached_creds = false;
+				}
+				wbcFreeMemory(info);
+			}
+
+			nt_status = ntlm_auth_prepare_gensec_client(state, lp_ctx,
+								    &state->gensec_state);
+			if (!NT_STATUS_IS_OK(nt_status)) {
+				printf("BH GENSEC mech failed to start: %s\n",
+				       nt_errstr(nt_status));
+				talloc_free(mem_ctx);
+				return;
+			}
+
+			creds = cli_credentials_init(state->gensec_state);
+			cli_credentials_set_conf(creds, lp_ctx);
+			if (opt_username) {
+				cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
+			}
+			if (opt_domain) {
+				cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
+			}
+			if (use_cached_creds) {
+				gensec_want_feature(state->gensec_state,
+						    GENSEC_FEATURE_NTLM_CCACHE);
+			} else if (state->set_password) {
+				cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
+			} else {
+				cli_credentials_set_password_callback(creds, get_password);
+			}
+			if (opt_workstation) {
+				cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
+			}
+
+			gensec_set_credentials(state->gensec_state, creds);
+
+			break;
+		case GSS_SPNEGO_SERVER:
+		case SQUID_2_5_NTLMSSP:
+		{
+			nt_status = ntlm_auth_prepare_gensec_server(state, lp_ctx,
+								    &state->gensec_state);
+			if (!NT_STATUS_IS_OK(nt_status)) {
+				printf("BH GENSEC mech failed to start: %s\n",
+				       nt_errstr(nt_status));
+				talloc_free(mem_ctx);
+				return;
+			}
+			break;
+		}
+		default:
+			talloc_free(mem_ctx);
+			abort();
+		}
+
+		gensec_want_feature_list(state->gensec_state, want_feature_list);
+
+		/* Session info is not complete, do not pass to auth log */
+		gensec_want_feature(state->gensec_state, GENSEC_FEATURE_NO_AUTHZ_LOG);
+
+		switch (stdio_helper_mode) {
+		case GSS_SPNEGO_CLIENT:
+		case GSS_SPNEGO_SERVER:
+			nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
+			if (!in.length) {
+				first = true;
+			}
+			break;
+		case NTLMSSP_CLIENT_1:
+			if (!in.length) {
+				first = true;
+			}
+			FALL_THROUGH;
+		case SQUID_2_5_NTLMSSP:
+			nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
+			break;
+		default:
+			talloc_free(mem_ctx);
+			abort();
+		}
+
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
+			printf("BH GENSEC mech failed to start\n");
+			talloc_free(mem_ctx);
+			return;
+		}
+
+	}
+
+	/* update */
+
+	if (strncmp(buf, "PW ", 3) == 0) {
+		state->set_password = talloc_strndup(state,
+						     (const char *)in.data,
+						     in.length);
+
+		cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
+					     state->set_password,
+					     CRED_SPECIFIED);
+		printf("OK\n");
+		talloc_free(mem_ctx);
+		return;
+	}
+
+	if (strncmp(buf, "GK", 2) == 0) {
+		char *base64_key;
+		DEBUG(10, ("Requested session key\n"));
+		nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key);
+		if(!NT_STATUS_IS_OK(nt_status)) {
+			DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
+			printf("BH No session key\n");
+			talloc_free(mem_ctx);
+			return;
+		} else {
+			base64_key = base64_encode_data_blob(state, session_key);
+			SMB_ASSERT(base64_key != NULL);
+			printf("GK %s\n", base64_key);
+			talloc_free(base64_key);
+		}
+		talloc_free(mem_ctx);
+		return;
+	}
+
+	if (strncmp(buf, "GF", 2) == 0) {
+		uint32_t neg_flags;
+
+		DEBUG(10, ("Requested negotiated NTLMSSP feature flags\n"));
+
+		neg_flags = gensec_ntlmssp_neg_flags(state->gensec_state);
+		if (neg_flags == 0) {
+			printf("BH\n");
+			talloc_free(mem_ctx);
+			return;
+		}
+
+		printf("GF 0x%08x\n", neg_flags);
+		talloc_free(mem_ctx);
+		return;
+	}
+
+	nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
+
+	/* don't leak 'bad password'/'no such user' info to the network client */
+	nt_status = nt_status_squash(nt_status);
+
+	if (out.length) {
+		out_base64 = base64_encode_data_blob(mem_ctx, out);
+		SMB_ASSERT(out_base64 != NULL);
+	} else {
+		out_base64 = NULL;
+	}
+
+	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		reply_arg = "*";
+		if (first && state->gensec_state->gensec_role == GENSEC_CLIENT) {
+			reply_code = "YR";
+		} else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
+			reply_code = "KK";
+		} else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
+			reply_code = "TT";
+		} else {
+			abort();
+		}
+
+
+	} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
+		reply_code = "BH NT_STATUS_ACCESS_DENIED";
+		reply_arg = nt_errstr(nt_status);
+		DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+	} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
+		reply_code = "BH NT_STATUS_UNSUCCESSFUL";
+		reply_arg = nt_errstr(nt_status);
+		DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+	} else if (!NT_STATUS_IS_OK(nt_status)) {
+		reply_code = "NA";
+		reply_arg = nt_errstr(nt_status);
+		DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
+	} else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
+		struct auth_session_info *session_info;
+
+		nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info);
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			reply_code = "BH Failed to retrieve session info";
+			reply_arg = nt_errstr(nt_status);
+			DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status)));
+		} else {
+
+			reply_code = "AF";
+			reply_arg = talloc_strdup(state->gensec_state, session_info->unix_info->unix_name);
+			if (reply_arg == NULL) {
+				reply_code = "BH out of memory";
+				reply_arg = nt_errstr(NT_STATUS_NO_MEMORY);
+			}
+			talloc_free(session_info);
+		}
+	} else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
+		reply_code = "AF";
+		reply_arg = out_base64;
+	} else {
+		abort();
+	}
+
+	switch (stdio_helper_mode) {
+	case GSS_SPNEGO_SERVER:
+		printf("%s %s %s\n", reply_code,
+		       out_base64 ? out_base64 : "*",
+		       reply_arg ? reply_arg : "*");
+		break;
+	default:
+		if (out_base64) {
+			printf("%s %s\n", reply_code, out_base64);
+		} else if (reply_arg) {
+			printf("%s %s\n", reply_code, reply_arg);
+		} else {
+			printf("%s\n", reply_code);
+		}
+	}
+
+	talloc_free(mem_ctx);
+	return;
+}
+
+static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+				      char *buf, int length, void **private2)
+{
+	manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
+	return;
+}
+
+static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+					 char *buf, int length, void **private2)
+{
+	manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
+	return;
+}
+
+static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+					     char *buf, int length, void **private2)
+{
+	manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
+	return;
+}
+
+static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+						char *buf, int length, void **private2)
+{
+	char *request, *parameter;
+	static DATA_BLOB challenge;
+	static DATA_BLOB lm_response;
+	static DATA_BLOB nt_response;
+	static char *full_username;
+	static char *username;
+	static char *domain;
+	static char *plaintext_password;
+	static bool ntlm_server_1_user_session_key;
+	static bool ntlm_server_1_lm_session_key;
+
+	if (strequal(buf, ".")) {
+		if (!full_username && !username) {
+			printf("Error: No username supplied!\n");
+		} else if (plaintext_password) {
+			/* handle this request as plaintext */
+			if (!full_username) {
+				if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
+					printf("Error: Out of memory in "
+					       "asprintf!\n.\n");
+					return;
+				}
+			}
+			if (check_plaintext_auth(full_username, plaintext_password, False)) {
+				printf("Authenticated: Yes\n");
+			} else {
+				printf("Authenticated: No\n");
+			}
+		} else if (!lm_response.data && !nt_response.data) {
+			printf("Error: No password supplied!\n");
+		} else if (!challenge.data) {
+			printf("Error: No lanman-challenge supplied!\n");
+		} else {
+			char *error_string = NULL;
+			uchar lm_key[8];
+			uchar user_session_key[16];
+			uint32_t flags = 0;
+			NTSTATUS nt_status;
+			if (full_username && !username) {
+				fstring fstr_user;
+				fstring fstr_domain;
+
+				if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
+					/* username might be 'tainted', don't print into our new-line deleimianted stream */
+					printf("Error: Could not parse into "
+					       "domain and username\n");
+				}
+				SAFE_FREE(username);
+				SAFE_FREE(domain);
+				username = smb_xstrdup(fstr_user);
+				domain = smb_xstrdup(fstr_domain);
+			}
+
+			if (opt_password) {
+				DATA_BLOB nt_session_key, lm_session_key;
+				struct samr_Password lm_pw, nt_pw;
+				TALLOC_CTX *mem_ctx = talloc_new(NULL);
+				ZERO_STRUCT(user_session_key);
+				ZERO_STRUCT(lm_key);
+
+				nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
+				nt_status = ntlm_password_check(mem_ctx,
+								true,
+								NTLM_AUTH_ON,
+								0,
+								&challenge,
+								&lm_response,
+								&nt_response,
+								username,
+								username,
+								domain,
+								&lm_pw, &nt_pw,
+								&nt_session_key,
+								&lm_session_key);
+				error_string = smb_xstrdup(get_friendly_nt_error_msg(nt_status));
+				if (ntlm_server_1_user_session_key) {
+					if (nt_session_key.length == sizeof(user_session_key)) {
+						memcpy(user_session_key,
+						       nt_session_key.data,
+						       sizeof(user_session_key));
+					}
+				}
+				if (ntlm_server_1_lm_session_key) {
+					if (lm_session_key.length == sizeof(lm_key)) {
+						memcpy(lm_key,
+						       lm_session_key.data,
+						       sizeof(lm_key));
+					}
+				}
+				TALLOC_FREE(mem_ctx);
+
+			} else {
+				uint8_t authoritative = 1;
+
+				if (!domain) {
+					domain = smb_xstrdup(get_winbind_domain());
+				}
+
+				if (ntlm_server_1_lm_session_key)
+					flags |= WBFLAG_PAM_LMKEY;
+
+				if (ntlm_server_1_user_session_key)
+					flags |= WBFLAG_PAM_USER_SESSION_KEY;
+
+				nt_status = contact_winbind_auth_crap(username,
+								      domain,
+								      lp_netbios_name(),
+								      &challenge,
+								      &lm_response,
+								      &nt_response,
+								      flags, 0,
+								      lm_key,
+								      user_session_key,
+								      &authoritative,
+								      &error_string,
+								      NULL);
+			}
+
+			if (!NT_STATUS_IS_OK(nt_status)) {
+				printf("Authenticated: No\n");
+				printf("Authentication-Error: %s\n.\n",
+				       error_string);
+			} else {
+				char *hex_lm_key;
+				char *hex_user_session_key;
+
+				printf("Authenticated: Yes\n");
+
+				if (ntlm_server_1_lm_session_key
+				    && (!all_zero(lm_key,
+						  sizeof(lm_key)))) {
+					hex_lm_key = hex_encode_talloc(NULL,
+								(const unsigned char *)lm_key,
+								sizeof(lm_key));
+					printf("LANMAN-Session-Key: %s\n",
+					       hex_lm_key);
+					TALLOC_FREE(hex_lm_key);
+				}
+
+				if (ntlm_server_1_user_session_key
+				    && (!all_zero(user_session_key,
+						  sizeof(user_session_key)))) {
+					hex_user_session_key = hex_encode_talloc(NULL,
+									  (const unsigned char *)user_session_key,
+									  sizeof(user_session_key));
+					printf("User-Session-Key: %s\n",
+					       hex_user_session_key);
+					TALLOC_FREE(hex_user_session_key);
+				}
+			}
+			SAFE_FREE(error_string);
+		}
+		/* clear out the state */
+		challenge = data_blob_null;
+		nt_response = data_blob_null;
+		lm_response = data_blob_null;
+		SAFE_FREE(full_username);
+		SAFE_FREE(username);
+		SAFE_FREE(domain);
+		SAFE_FREE(plaintext_password);
+		ntlm_server_1_user_session_key = False;
+		ntlm_server_1_lm_session_key = False;
+		printf(".\n");
+
+		return;
+	}
+
+	request = buf;
+
+	/* Indicates a base64 encoded structure */
+	parameter = strstr_m(request, ":: ");
+	if (!parameter) {
+		parameter = strstr_m(request, ": ");
+
+		if (!parameter) {
+			DEBUG(0, ("Parameter not found!\n"));
+			printf("Error: Parameter not found!\n.\n");
+			return;
+		}
+
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+
+	} else {
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+
+		base64_decode_inplace(parameter);
+	}
+
+	if (strequal(request, "LANMAN-Challenge")) {
+		challenge = strhex_to_data_blob(NULL, parameter);
+		if (challenge.length != 8) {
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 8)\n.\n",
+			       parameter,
+			       (int)challenge.length);
+			challenge = data_blob_null;
+		}
+	} else if (strequal(request, "NT-Response")) {
+		nt_response = strhex_to_data_blob(NULL, parameter);
+		if (nt_response.length < 24) {
+			printf("Error: hex decode of %s failed! "
+			       "(only got %d bytes, needed at least 24)\n.\n",
+			       parameter,
+			       (int)nt_response.length);
+			nt_response = data_blob_null;
+		}
+	} else if (strequal(request, "LANMAN-Response")) {
+		lm_response = strhex_to_data_blob(NULL, parameter);
+		if (lm_response.length != 24) {
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 24)\n.\n",
+			       parameter,
+			       (int)lm_response.length);
+			lm_response = data_blob_null;
+		}
+	} else if (strequal(request, "Password")) {
+		plaintext_password = smb_xstrdup(parameter);
+	} else if (strequal(request, "NT-Domain")) {
+		domain = smb_xstrdup(parameter);
+	} else if (strequal(request, "Username")) {
+		username = smb_xstrdup(parameter);
+	} else if (strequal(request, "Full-Username")) {
+		full_username = smb_xstrdup(parameter);
+	} else if (strequal(request, "Request-User-Session-Key")) {
+		ntlm_server_1_user_session_key = strequal(parameter, "Yes");
+	} else if (strequal(request, "Request-LanMan-Session-Key")) {
+		ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
+	} else {
+		printf("Error: Unknown request %s\n.\n", request);
+	}
+}
+
+static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
+						  struct loadparm_context *lp_ctx,
+						  struct ntlm_auth_state *state,
+						  char *buf, int length, void **private2)
+{
+	char *request, *parameter;
+	static DATA_BLOB new_nt_pswd;
+	static DATA_BLOB old_nt_hash_enc;
+	static DATA_BLOB new_lm_pswd;
+	static DATA_BLOB old_lm_hash_enc;
+	static char *full_username = NULL;
+	static char *username = NULL;
+	static char *domain = NULL;
+	static char *newpswd =  NULL;
+	static char *oldpswd = NULL;
+
+	if (strequal(buf, "."))	{
+		if(newpswd && oldpswd) {
+			uchar old_nt_hash[16];
+			uchar old_lm_hash[16];
+			uchar new_nt_hash[16];
+			uchar new_lm_hash[16];
+
+			gnutls_cipher_hd_t cipher_hnd = NULL;
+			gnutls_datum_t old_nt_key = {
+				.data = old_nt_hash,
+				.size = sizeof(old_nt_hash),
+			};
+			int rc;
+
+			new_nt_pswd = data_blob(NULL, 516);
+			old_nt_hash_enc = data_blob(NULL, 16);
+
+			/* Calculate the MD4 hash (NT compatible) of the
+			 * password */
+			E_md4hash(oldpswd, old_nt_hash);
+			E_md4hash(newpswd, new_nt_hash);
+
+			/* E_deshash returns false for 'long'
+			   passwords (> 14 DOS chars).
+
+			   Therefore, don't send a buffer
+			   encrypted with the truncated hash
+			   (it could allow an even easier
+			   attack on the password)
+
+			   Likewise, obey the admin's restriction
+			*/
+
+			rc = gnutls_cipher_init(&cipher_hnd,
+						GNUTLS_CIPHER_ARCFOUR_128,
+						&old_nt_key,
+						NULL);
+			if (rc < 0) {
+				DBG_ERR("gnutls_cipher_init failed: %s\n",
+					gnutls_strerror(rc));
+				if (rc == GNUTLS_E_UNWANTED_ALGORITHM) {
+					DBG_ERR("Running in FIPS mode, NTLM blocked\n");
+				}
+				return;
+			}
+
+			if (lp_client_lanman_auth() &&
+			    E_deshash(newpswd, new_lm_hash) &&
+			    E_deshash(oldpswd, old_lm_hash)) {
+				new_lm_pswd = data_blob(NULL, 516);
+				old_lm_hash_enc = data_blob(NULL, 16);
+				encode_pw_buffer(new_lm_pswd.data, newpswd,
+						 STR_UNICODE);
+
+				rc = gnutls_cipher_encrypt(cipher_hnd,
+							   new_lm_pswd.data,
+							   516);
+				if (rc < 0) {
+					gnutls_cipher_deinit(cipher_hnd);
+					return;
+				}
+				rc = E_old_pw_hash(new_nt_hash, old_lm_hash,
+					      old_lm_hash_enc.data);
+				if (rc != 0) {
+					DBG_ERR("E_old_pw_hash failed: %s\n",
+						gnutls_strerror(rc));
+					return;
+				}
+			} else {
+				new_lm_pswd.data = NULL;
+				new_lm_pswd.length = 0;
+				old_lm_hash_enc.data = NULL;
+				old_lm_hash_enc.length = 0;
+			}
+
+			encode_pw_buffer(new_nt_pswd.data, newpswd,
+					 STR_UNICODE);
+
+			rc = gnutls_cipher_encrypt(cipher_hnd,
+						   new_nt_pswd.data,
+						   516);
+			gnutls_cipher_deinit(cipher_hnd);
+			if (rc < 0) {
+				return;
+			}
+			rc = E_old_pw_hash(new_nt_hash, old_nt_hash,
+				      old_nt_hash_enc.data);
+			if (rc != 0) {
+				DBG_ERR("E_old_pw_hash failed: %s\n",
+					gnutls_strerror(rc));
+				return;
+			}
+
+			ZERO_ARRAY(old_nt_hash);
+			ZERO_ARRAY(old_lm_hash);
+			ZERO_ARRAY(new_nt_hash);
+			ZERO_ARRAY(new_lm_hash);
+		}
+
+		if (!full_username && !username) {
+			printf("Error: No username supplied!\n");
+		} else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
+			   (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
+			printf("Error: No NT or LM password "
+			       "blobs supplied!\n");
+		} else {
+			char *error_string = NULL;
+
+			if (full_username && !username)	{
+				fstring fstr_user;
+				fstring fstr_domain;
+
+				if (!parse_ntlm_auth_domain_user(full_username,
+								 fstr_user,
+								 fstr_domain)) {
+					/* username might be 'tainted', don't
+					 * print into our new-line
+					 * deleimianted stream */
+					printf("Error: Could not "
+					       "parse into domain and "
+					       "username\n");
+					SAFE_FREE(username);
+					username = smb_xstrdup(full_username);
+				} else {
+					SAFE_FREE(username);
+					SAFE_FREE(domain);
+					username = smb_xstrdup(fstr_user);
+					domain = smb_xstrdup(fstr_domain);
+				}
+
+			}
+
+			if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
+						    username, domain,
+						    new_nt_pswd,
+						    old_nt_hash_enc,
+						    new_lm_pswd,
+						    old_lm_hash_enc,
+						    &error_string))) {
+				printf("Password-Change: No\n");
+				printf("Password-Change-Error: %s\n.\n",
+				       error_string);
+			} else {
+				printf("Password-Change: Yes\n");
+			}
+
+			SAFE_FREE(error_string);
+		}
+		/* clear out the state */
+		new_nt_pswd = data_blob_null;
+		old_nt_hash_enc = data_blob_null;
+		new_lm_pswd = data_blob_null;
+		old_nt_hash_enc = data_blob_null;
+		SAFE_FREE(full_username);
+		SAFE_FREE(username);
+		SAFE_FREE(domain);
+		SAFE_FREE(newpswd);
+		SAFE_FREE(oldpswd);
+		printf(".\n");
+
+		return;
+	}
+
+	request = buf;
+
+	/* Indicates a base64 encoded structure */
+	parameter = strstr_m(request, ":: ");
+	if (!parameter) {
+		parameter = strstr_m(request, ": ");
+
+		if (!parameter)	{
+			DEBUG(0, ("Parameter not found!\n"));
+			printf("Error: Parameter not found!\n.\n");
+			return;
+		}
+
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+	} else {
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+		parameter[0] ='\0';
+		parameter++;
+
+		base64_decode_inplace(parameter);
+	}
+
+	if (strequal(request, "new-nt-password-blob")) {
+		new_nt_pswd = strhex_to_data_blob(NULL, parameter);
+		if (new_nt_pswd.length != 516) {
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 516)\n.\n",
+			       parameter,
+			       (int)new_nt_pswd.length);
+			new_nt_pswd = data_blob_null;
+		}
+	} else if (strequal(request, "old-nt-hash-blob")) {
+		old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
+		if (old_nt_hash_enc.length != 16) {
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 16)\n.\n",
+			       parameter,
+			       (int)old_nt_hash_enc.length);
+			old_nt_hash_enc = data_blob_null;
+		}
+	} else if (strequal(request, "new-lm-password-blob")) {
+		new_lm_pswd = strhex_to_data_blob(NULL, parameter);
+		if (new_lm_pswd.length != 516) {
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 516)\n.\n",
+			       parameter,
+			       (int)new_lm_pswd.length);
+			new_lm_pswd = data_blob_null;
+		}
+	}
+	else if (strequal(request, "old-lm-hash-blob"))	{
+		old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
+		if (old_lm_hash_enc.length != 16)
+		{
+			printf("Error: hex decode of %s failed! "
+			       "(got %d bytes, expected 16)\n.\n",
+			       parameter,
+			       (int)old_lm_hash_enc.length);
+			old_lm_hash_enc = data_blob_null;
+		}
+	} else if (strequal(request, "nt-domain")) {
+		domain = smb_xstrdup(parameter);
+	} else if(strequal(request, "username")) {
+		username = smb_xstrdup(parameter);
+	} else if(strequal(request, "full-username")) {
+		username = smb_xstrdup(parameter);
+	} else if(strequal(request, "new-password")) {
+		newpswd = smb_xstrdup(parameter);
+	} else if (strequal(request, "old-password")) {
+		oldpswd = smb_xstrdup(parameter);
+	} else {
+		printf("Error: Unknown request %s\n.\n", request);
+	}
+}
+
+static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
+				   struct loadparm_context *lp_ctx,
+				   struct ntlm_auth_state *state,
+		stdio_helper_function fn, void **private2)
+{
+	char *buf;
+	char tmp[INITIAL_BUFFER_SIZE+1];
+	int length, buf_size = 0;
+	char *c;
+
+	buf = talloc_strdup(state->mem_ctx, "");
+	if (!buf) {
+		DEBUG(0, ("Failed to allocate input buffer.\n"));
+		fprintf(stderr, "ERR\n");
+		exit(1);
+	}
+
+	do {
+
+		/* this is not a typo - x_fgets doesn't work too well under
+		 * squid */
+		if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
+			if (ferror(stdin)) {
+				DEBUG(1, ("fgets() failed! dying..... errno=%d "
+					  "(%s)\n", ferror(stdin),
+					  strerror(ferror(stdin))));
+
+				exit(1);
+			}
+			exit(0);
+		}
+
+		buf = talloc_strdup_append_buffer(buf, tmp);
+		buf_size += INITIAL_BUFFER_SIZE;
+
+		if (buf_size > MAX_BUFFER_SIZE) {
+			DEBUG(2, ("Oversized message\n"));
+			fprintf(stderr, "ERR\n");
+			talloc_free(buf);
+			return;
+		}
+
+		c = strchr(buf, '\n');
+	} while (c == NULL);
+
+	*c = '\0';
+	length = c-buf;
+
+	DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
+
+	if (buf[0] == '\0') {
+		DEBUG(2, ("Invalid Request\n"));
+		fprintf(stderr, "ERR\n");
+		talloc_free(buf);
+		return;
+	}
+
+	fn(stdio_helper_mode, lp_ctx, state, buf, length, private2);
+	talloc_free(buf);
+}
+
+
+static void squid_stream(enum stdio_helper_mode stdio_mode,
+			 struct loadparm_context *lp_ctx,
+			 stdio_helper_function fn) {
+	TALLOC_CTX *mem_ctx;
+	struct ntlm_auth_state *state;
+
+	/* initialize FDescs */
+	setbuf(stdout, NULL);
+	setbuf(stderr, NULL);
+
+	mem_ctx = talloc_init("ntlm_auth");
+	if (!mem_ctx) {
+		DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
+		fprintf(stderr, "ERR\n");
+		exit(1);
+	}
+
+	state = talloc_zero(mem_ctx, struct ntlm_auth_state);
+	if (!state) {
+		DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
+		fprintf(stderr, "ERR\n");
+		exit(1);
+	}
+
+	state->mem_ctx = mem_ctx;
+	state->helper_mode = stdio_mode;
+
+	while(1) {
+		TALLOC_CTX *frame = talloc_stackframe();
+		manage_squid_request(stdio_mode, lp_ctx, state, fn, NULL);
+		TALLOC_FREE(frame);
+	}
+}
+
+
+/* Authenticate a user with a challenge/response */
+
+static bool check_auth_crap(void)
+{
+	NTSTATUS nt_status;
+	uint32_t flags = 0;
+	char lm_key[8];
+	char user_session_key[16];
+	char *hex_lm_key;
+	char *hex_user_session_key;
+	char *error_string;
+	uint8_t authoritative = 1;
+
+	setbuf(stdout, NULL);
+
+	if (request_lm_key)
+		flags |= WBFLAG_PAM_LMKEY;
+
+	if (request_user_session_key)
+		flags |= WBFLAG_PAM_USER_SESSION_KEY;
+
+	flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
+					      opt_workstation,
+					      &opt_challenge,
+					      &opt_lm_response,
+					      &opt_nt_response,
+					      flags, 0,
+					      (unsigned char *)lm_key,
+					      (unsigned char *)user_session_key,
+					      &authoritative,
+					      &error_string, NULL);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		printf("%s (0x%x)\n", error_string,
+		       NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return False;
+	}
+
+	if (request_lm_key
+	    && (!all_zero((uint8_t *)lm_key, sizeof(lm_key)))) {
+		hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
+					sizeof(lm_key));
+		printf("LM_KEY: %s\n", hex_lm_key);
+		TALLOC_FREE(hex_lm_key);
+	}
+	if (request_user_session_key
+	    && (!all_zero((uint8_t *)user_session_key,
+			  sizeof(user_session_key)))) {
+		hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
+						  sizeof(user_session_key));
+		printf("NT_KEY: %s\n", hex_user_session_key);
+		TALLOC_FREE(hex_user_session_key);
+	}
+
+        return True;
+}
+
+/* Main program */
+
+enum {
+	OPT_USERNAME = 1000,
+	OPT_DOMAIN,
+	OPT_WORKSTATION,
+	OPT_CHALLENGE,
+	OPT_RESPONSE,
+	OPT_LM,
+	OPT_NT,
+	OPT_PASSWORD,
+	OPT_LM_KEY,
+	OPT_USER_SESSION_KEY,
+	OPT_DIAGNOSTICS,
+	OPT_REQUIRE_MEMBERSHIP,
+	OPT_USE_CACHED_CREDS,
+	OPT_ALLOW_MSCHAPV2,
+	OPT_PAM_WINBIND_CONF,
+	OPT_TARGET_SERVICE,
+	OPT_TARGET_HOSTNAME,
+	OPT_OFFLINE_LOGON
+};
+
+ int main(int argc, const char **argv)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	int opt;
+	const char *helper_protocol = NULL;
+	int diagnostics = 0;
+
+	const char *hex_challenge = NULL;
+	const char *hex_lm_response = NULL;
+	const char *hex_nt_response = NULL;
+	struct loadparm_context *lp_ctx;
+	poptContext pc;
+	bool ok;
+
+	/* NOTE: DO NOT change this interface without considering the implications!
+	   This is an external interface, which other programs will use to interact
+	   with this helper.
+	*/
+
+	/* We do not use single-letter command abbreviations, because they harm future
+	   interface stability. */
+
+	struct poptOption long_options[] = {
+		POPT_AUTOHELP
+		{
+			.longName   = "helper-protocol",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &helper_protocol,
+			.val        = OPT_DOMAIN,
+			.descrip    = "operate as a stdio-based helper",
+			.argDescrip = "helper protocol to use"
+		},
+		{
+			.longName   = "username",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_username,
+			.val        = OPT_USERNAME,
+			.descrip    = "username"
+		},
+		{
+			.longName   = "domain",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_domain,
+			.val        = OPT_DOMAIN,
+			.descrip    = "domain name"
+		},
+		{
+			.longName   = "workstation",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_workstation,
+			.val        = OPT_WORKSTATION,
+			.descrip    = "workstation"
+		},
+		{
+			.longName   = "challenge",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &hex_challenge,
+			.val        = OPT_CHALLENGE,
+			.descrip    = "challenge (HEX encoded)"
+		},
+		{
+			.longName   = "lm-response",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &hex_lm_response,
+			.val        = OPT_LM,
+			.descrip    = "LM Response to the challenge (HEX encoded)"
+		},
+		{
+			.longName   = "nt-response",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &hex_nt_response,
+			.val        = OPT_NT,
+			.descrip    = "NT or NTLMv2 Response to the challenge (HEX encoded)"
+		},
+		{
+			.longName   = "password",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_password,
+			.val        = OPT_PASSWORD,
+			.descrip    = "User's plaintext password"
+		},
+		{
+			.longName   = "request-lm-key",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &request_lm_key,
+			.val        = OPT_LM_KEY,
+			.descrip    = "Retrieve LM session key (or, with --diagnostics, expect LM support)"
+		},
+		{
+			.longName   = "request-nt-key",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &request_user_session_key,
+			.val        = OPT_USER_SESSION_KEY,
+			.descrip    = "Retrieve User (NT) session key"
+		},
+		{
+			.longName   = "use-cached-creds",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &use_cached_creds,
+			.val        = OPT_USE_CACHED_CREDS,
+			.descrip    = "Use cached credentials if no password is given"
+		},
+		{
+			.longName   = "allow-mschapv2",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &opt_allow_mschapv2,
+			.val        = OPT_ALLOW_MSCHAPV2,
+			.descrip    = "Explicitly allow MSCHAPv2",
+		},
+		{
+			.longName   = "offline-logon",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &offline_logon,
+			.val        = OPT_OFFLINE_LOGON,
+			.descrip    = "Use cached passwords when DC is offline"
+		},
+		{
+			.longName   = "diagnostics",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_NONE,
+			.arg        = &diagnostics,
+			.val        = OPT_DIAGNOSTICS,
+			.descrip    = "Perform diagnostics on the authentication chain"
+		},
+		{
+			.longName   = "require-membership-of",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &require_membership_of,
+			.val        = OPT_REQUIRE_MEMBERSHIP,
+			.descrip    = "Require that a user be a member of this group (either name or SID) for authentication to succeed",
+		},
+		{
+			.longName   = "pam-winbind-conf",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_pam_winbind_conf,
+			.val        = OPT_PAM_WINBIND_CONF,
+			.descrip    = "Require that request must set WBFLAG_PAM_CONTACT_TRUSTDOM when krb5 auth is required",
+		},
+		{
+			.longName   = "target-service",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_target_service,
+			.val        = OPT_TARGET_SERVICE,
+			.descrip    = "Target service (eg http)",
+		},
+		{
+			.longName   = "target-hostname",
+			.shortName  = 0,
+			.argInfo    = POPT_ARG_STRING,
+			.arg        = &opt_target_hostname,
+			.val        = OPT_TARGET_HOSTNAME,
+			.descrip    = "Target hostname",
+		},
+		POPT_COMMON_DEBUG_ONLY
+		POPT_COMMON_CONFIG_ONLY
+		POPT_COMMON_OPTION_ONLY
+		POPT_COMMON_VERSION
+		POPT_TABLEEND
+	};
+
+	/* Samba client initialisation */
+	smb_init_locale();
+
+	ok = samba_cmdline_init(frame,
+				SAMBA_CMDLINE_CONFIG_CLIENT,
+				false /* require_smbconf */);
+	if (!ok) {
+		DBG_ERR("Failed to init cmdline parser!\n");
+		TALLOC_FREE(frame);
+		exit(1);
+	}
+
+	pc = samba_popt_get_context(getprogname(),
+				    argc,
+				    argv,
+				    long_options,
+				    POPT_CONTEXT_KEEP_FIRST);
+	if (pc == NULL) {
+		DBG_ERR("Failed to setup popt context!\n");
+		TALLOC_FREE(frame);
+		exit(1);
+	}
+
+	while((opt = poptGetNextOpt(pc)) != -1) {
+		switch (opt) {
+		case OPT_CHALLENGE:
+			opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
+			if (opt_challenge.length != 8) {
+				fprintf(stderr, "hex decode of %s failed! "
+					"(only got %d bytes)\n",
+					hex_challenge,
+					(int)opt_challenge.length);
+				exit(1);
+			}
+			break;
+		case OPT_LM:
+			opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
+			if (opt_lm_response.length != 24) {
+				fprintf(stderr, "hex decode of %s failed! "
+					"(only got %d bytes)\n",
+					hex_lm_response,
+					(int)opt_lm_response.length);
+				exit(1);
+			}
+			break;
+
+		case OPT_NT:
+			opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
+			if (opt_nt_response.length < 24) {
+				fprintf(stderr, "hex decode of %s failed! "
+					"(only got %d bytes)\n",
+					hex_nt_response,
+					(int)opt_nt_response.length);
+				exit(1);
+			}
+			break;
+
+                case OPT_REQUIRE_MEMBERSHIP:
+			if (strncasecmp_m("S-", require_membership_of, 2) == 0) {
+				require_membership_of_sid = require_membership_of;
+			}
+			break;
+
+		case POPT_ERROR_BADOPT:
+			fprintf(stderr, "\nInvalid option %s: %s\n\n",
+				poptBadOption(pc, 0), poptStrerror(opt));
+			poptPrintUsage(pc, stderr, 0);
+			exit(1);
+		}
+	}
+
+	if (opt_username) {
+		char *domain = SMB_STRDUP(opt_username);
+		char *p = strchr_m(domain, *lp_winbind_separator());
+		if (p) {
+			opt_username = p+1;
+			*p = '\0';
+			if (opt_domain && !strequal(opt_domain, domain)) {
+				fprintf(stderr, "Domain specified in username (%s) "
+					"doesn't match specified domain (%s)!\n\n",
+					domain, opt_domain);
+				poptPrintHelp(pc, stderr, 0);
+				exit(1);
+			}
+			opt_domain = domain;
+		} else {
+			SAFE_FREE(domain);
+		}
+	}
+
+	/* Note: if opt_domain is "" then send no domain */
+	if (opt_domain == NULL) {
+		opt_domain = get_winbind_domain();
+	}
+
+	if (opt_workstation == NULL) {
+		opt_workstation = "";
+	}
+
+	lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
+	if (lp_ctx == NULL) {
+		fprintf(stderr, "loadparm_init_s3() failed!\n");
+		exit(1);
+	}
+
+	if (helper_protocol) {
+		int i;
+		for (i=0; i<NUM_HELPER_MODES; i++) {
+			if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
+				squid_stream(stdio_helper_protocols[i].mode, lp_ctx, stdio_helper_protocols[i].fn);
+				exit(0);
+			}
+		}
+		fprintf(stderr, "unknown helper protocol [%s]\n\n"
+			"Valid helper protools:\n\n", helper_protocol);
+
+		for (i=0; i<NUM_HELPER_MODES; i++) {
+			fprintf(stderr, "%s\n",
+				stdio_helper_protocols[i].name);
+		}
+
+		exit(1);
+	}
+
+	if (!opt_username || !*opt_username) {
+		fprintf(stderr, "username must be specified!\n\n");
+		poptPrintHelp(pc, stderr, 0);
+		exit(1);
+	}
+
+	if (opt_challenge.length) {
+		if (!check_auth_crap()) {
+			exit(1);
+		}
+		exit(0);
+	}
+
+	if (!opt_password) {
+		char pwd[256] = {0};
+		int rc;
+
+		rc = samba_getpass("Password: ", pwd, sizeof(pwd), false, false);
+		if (rc == 0) {
+			opt_password = SMB_STRDUP(pwd);
+		}
+	}
+
+	if (diagnostics) {
+		if (!diagnose_ntlm_auth(request_lm_key)) {
+			poptFreeContext(pc);
+			return 1;
+		}
+	} else {
+		fstring user;
+
+		fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
+		if (!check_plaintext_auth(user, opt_password, True)) {
+			poptFreeContext(pc);
+			return 1;
+		}
+	}
+
+	/* Exit code */
+	gfree_all();
+	poptFreeContext(pc);
+	TALLOC_FREE(frame);
+	return 0;
+}