r2: import HEAD into svn+ssh://svn.samba.org/home/svn/samba/trunk

metze

1 files changed, 2182 insertions, 0 deletions

diff --git a/source/utils/ntlm_auth.c b/source/utils/ntlm_auth.c
new file mode 100644
index 00000000000..2213a9bae37
--- /dev/null
+++ b/source/utils/ntlm_auth.c
@@ -0,0 +1,2182 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Winbind status program.
+
+   Copyright (C) Tim Potter      2000-2002
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
+   Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000 
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+#define SQUID_BUFFER_SIZE 2010
+
+enum stdio_helper_mode {
+	SQUID_2_4_BASIC,
+	SQUID_2_5_BASIC,
+	SQUID_2_5_NTLMSSP,
+	NTLMSSP_CLIENT_1,
+	GSS_SPNEGO,
+	GSS_SPNEGO_CLIENT,
+	NUM_HELPER_MODES
+};
+
+enum ntlm_break {
+	BREAK_NONE,
+	BREAK_LM,
+	BREAK_NT,
+	NO_LM,
+	NO_NT
+};
+
+typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode, 
+				     char *buf, int length);
+
+static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode, 
+					char *buf, int length);
+
+static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode, 
+					  char *buf, int length);
+
+static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode, 
+					   char *buf, int length);
+
+static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode, 
+				       char *buf, int length);
+
+static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode, 
+					      char *buf, int length);
+
+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, "gss-spnego", manage_gss_spnego_request},
+	{ GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
+	{ NUM_HELPER_MODES, NULL, NULL}
+};
+
+extern int winbindd_fd;
+
+static const char *opt_username;
+static const char *opt_domain;
+static const char *opt_workstation;
+static 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_nt_key;
+
+
+static char winbind_separator(void)
+{
+	struct winbindd_response response;
+	static BOOL got_sep;
+	static char sep;
+
+	if (got_sep)
+		return sep;
+
+	ZERO_STRUCT(response);
+
+	/* Send off request */
+
+	if (winbindd_request(WINBINDD_INFO, NULL, &response) !=
+	    NSS_STATUS_SUCCESS) {
+		d_printf("could not obtain winbind separator!\n");
+		return '\\';
+	}
+
+	sep = response.data.info.winbind_separator;
+	got_sep = True;
+
+	if (!sep) {
+		d_printf("winbind separator was NULL!\n");
+		return '\\';
+	}
+	
+	return sep;
+}
+
+static const char *get_winbind_domain(void)
+{
+	struct winbindd_response response;
+
+	static fstring winbind_domain;
+	if (*winbind_domain) {
+		return winbind_domain;
+	}
+
+	ZERO_STRUCT(response);
+
+	/* Send off request */
+
+	if (winbindd_request(WINBINDD_DOMAIN_NAME, NULL, &response) !=
+	    NSS_STATUS_SUCCESS) {
+		DEBUG(0, ("could not obtain winbind domain name!\n"));
+		return NULL;
+	}
+
+	fstrcpy(winbind_domain, response.data.domain_name);
+
+	return winbind_domain;
+
+}
+
+static const char *get_winbind_netbios_name(void)
+{
+	struct winbindd_response response;
+
+	static fstring winbind_netbios_name;
+
+	if (*winbind_netbios_name) {
+		return winbind_netbios_name;
+	}
+
+	ZERO_STRUCT(response);
+
+	/* Send off request */
+
+	if (winbindd_request(WINBINDD_NETBIOS_NAME, NULL, &response) !=
+	    NSS_STATUS_SUCCESS) {
+		DEBUG(0, ("could not obtain winbind netbios name!\n"));
+		return NULL;
+	}
+
+	fstrcpy(winbind_netbios_name, response.data.netbios_name);
+
+	return winbind_netbios_name;
+
+}
+
+/* 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;
+        NSS_STATUS result;
+
+	/* Send off request */
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	fstrcpy(request.data.auth.user, user);
+	fstrcpy(request.data.auth.pass, pass);
+
+	result = winbindd_request(WINBINDD_PAM_AUTH, &request, &response);
+
+	/* Display response */
+	
+	if (stdout_diagnostics) {
+		if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
+			d_printf("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 ((result != NSS_STATUS_SUCCESS) && (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 (result == NSS_STATUS_SUCCESS);
+}
+
+/* authenticate a user with an encrypted username/password */
+
+static 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 flags, 
+					  uint8 lm_key[8], 
+					  uint8 nt_key[16], 
+					  char **error_string, 
+					  char **unix_name) 
+{
+	NTSTATUS nt_status;
+        NSS_STATUS result;
+	struct winbindd_request request;
+	struct winbindd_response response;
+
+	static uint8 zeros[16];
+
+	ZERO_STRUCT(request);
+	ZERO_STRUCT(response);
+
+	request.flags = flags;
+
+	if (push_utf8_fstring(request.data.auth_crap.user, username) == -1) {
+		*error_string = smb_xstrdup(
+			"unable to create utf8 string for username");
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	if (push_utf8_fstring(request.data.auth_crap.domain, domain) == -1) {
+		*error_string = smb_xstrdup(
+			"unable to create utf8 string for domain");
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	if (push_utf8_fstring(request.data.auth_crap.workstation, 
+			      workstation) == -1) {
+		*error_string = smb_xstrdup(
+			"unable to create utf8 string for workstation");
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
+
+	if (lm_response && lm_response->length) {
+		memcpy(request.data.auth_crap.lm_resp, lm_response->data, MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
+		request.data.auth_crap.lm_resp_len = lm_response->length;
+	}
+
+	if (nt_response && nt_response->length) {
+		memcpy(request.data.auth_crap.nt_resp, nt_response->data, MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
+                request.data.auth_crap.nt_resp_len = nt_response->length;
+	}
+	
+	result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
+
+	/* Display response */
+
+	if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
+		nt_status = NT_STATUS_UNSUCCESSFUL;
+		if (error_string)
+			*error_string = smb_xstrdup("Reading winbind reply failed!");
+		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);
+		return nt_status;
+	}
+
+	if ((flags & WBFLAG_PAM_LMKEY) && lm_key 
+	    && (memcmp(zeros, response.data.auth.first_8_lm_hash, 
+		       sizeof(response.data.auth.first_8_lm_hash)) != 0)) {
+		memcpy(lm_key, response.data.auth.first_8_lm_hash, 
+			sizeof(response.data.auth.first_8_lm_hash));
+	}
+	if ((flags & WBFLAG_PAM_NTKEY) && nt_key
+		    && (memcmp(zeros, response.data.auth.nt_session_key, 
+			       sizeof(response.data.auth.nt_session_key)) != 0)) {
+		memcpy(nt_key, response.data.auth.nt_session_key, 
+			sizeof(response.data.auth.nt_session_key));
+	}
+
+	if (flags & WBFLAG_PAM_UNIX_NAME) {
+		if (pull_utf8_allocate(unix_name, (char *)response.extra_data) == -1) {
+			return NT_STATUS_NO_MEMORY;
+		}
+	}
+
+	return nt_status;
+}
+				   
+static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key) 
+{
+	static const char zeros[16];
+	NTSTATUS nt_status;
+	char *error_string;
+	uint8 lm_key[8]; 
+	uint8 nt_key[16]; 
+	char *unix_name;
+
+	nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
+					      ntlmssp_state->workstation,
+					      &ntlmssp_state->chal,
+					      &ntlmssp_state->lm_resp,
+					      &ntlmssp_state->nt_resp, 
+					      WBFLAG_PAM_LMKEY | WBFLAG_PAM_NTKEY | WBFLAG_PAM_UNIX_NAME,
+					      lm_key, nt_key, 
+					      &error_string, &unix_name);
+
+	if (NT_STATUS_IS_OK(nt_status)) {
+		if (memcmp(lm_key, zeros, 8) != 0) {
+			*lm_session_key = data_blob(NULL, 16);
+			memcpy(lm_session_key->data, lm_key, 8);
+			memset(lm_session_key->data+8, '\0', 8);
+		}
+		
+		if (memcmp(nt_key, zeros, 16) != 0) {
+			*nt_session_key = data_blob(nt_key, 16);
+		}
+		ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state->mem_ctx, unix_name);
+		SAFE_FREE(unix_name);
+	} else {
+		DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3, 
+		      ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n", 
+		       ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation, error_string ? error_string : "unknown error (NULL)"));
+		ntlmssp_state->auth_context = NULL;
+	}
+	return nt_status;
+}
+
+static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key) 
+{
+	static const char zeros[16];
+	NTSTATUS nt_status;
+	uint8 lm_key[8]; 
+	uint8 nt_key[16]; 
+	uint8 lm_pw[16], nt_pw[16];
+
+	nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
+	
+	nt_status = ntlm_password_check(ntlmssp_state->mem_ctx, 
+					&ntlmssp_state->chal,
+					&ntlmssp_state->lm_resp,
+					&ntlmssp_state->nt_resp, 
+					ntlmssp_state->user, 
+					ntlmssp_state->user, 
+					ntlmssp_state->domain,
+					lm_pw, nt_pw, nt_session_key, lm_session_key);
+	
+	if (NT_STATUS_IS_OK(nt_status)) {
+		if (memcmp(lm_key, zeros, 8) != 0) {
+			*lm_session_key = data_blob(NULL, 16);
+			memcpy(lm_session_key->data, lm_key, 8);
+			memset(lm_session_key->data+8, '\0', 8);
+		}
+		
+		if (memcmp(nt_key, zeros, 16) != 0) {
+			*nt_session_key = data_blob(nt_key, 16);
+		}
+		ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state->mem_ctx, "%s%c%s", ntlmssp_state->domain, *lp_winbind_separator(), ntlmssp_state->user);
+	} else {
+		DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n", 
+			  ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation, 
+			  nt_errstr(nt_status)));
+		ntlmssp_state->auth_context = NULL;
+	}
+	return nt_status;
+}
+
+static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state) 
+{
+	NTSTATUS status;
+	if ( (opt_username == NULL) || (opt_domain == NULL) ) {
+		DEBUG(1, ("Need username and domain for NTLMSSP\n"));
+		return status;
+	}
+
+	status = ntlmssp_client_start(client_ntlmssp_state);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1, ("Could not start NTLMSSP client: %s\n",
+			  nt_errstr(status)));
+		ntlmssp_end(client_ntlmssp_state);
+		return status;
+	}
+
+	status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1, ("Could not set username: %s\n",
+			  nt_errstr(status)));
+		ntlmssp_end(client_ntlmssp_state);
+		return status;
+	}
+
+	status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1, ("Could not set domain: %s\n",
+			  nt_errstr(status)));
+		ntlmssp_end(client_ntlmssp_state);
+		return status;
+	}
+
+	status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
+	
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1, ("Could not set password: %s\n",
+			  nt_errstr(status)));
+		ntlmssp_end(client_ntlmssp_state);
+		return status;
+	}
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state) 
+{
+	NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
+	
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(1, ("Could not start NTLMSSP client: %s\n",
+			  nt_errstr(status)));
+		return status;
+	}
+
+	/* Have we been given a local password, or should we ask winbind? */
+	if (opt_password) {
+		(*ntlmssp_state)->check_password = local_pw_check;
+		(*ntlmssp_state)->get_domain = lp_workgroup;
+		(*ntlmssp_state)->get_global_myname = global_myname;
+	} else {
+		(*ntlmssp_state)->check_password = winbind_pw_check;
+		(*ntlmssp_state)->get_domain = get_winbind_domain;
+		(*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
+	}
+	return NT_STATUS_OK;
+}
+
+static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode, 
+					 char *buf, int length) 
+{
+	static NTLMSSP_STATE *ntlmssp_state = NULL;
+	DATA_BLOB request, reply;
+	NTSTATUS nt_status;
+
+	if (strlen(buf) < 2) {
+		DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (strlen(buf) > 3) {
+		request = base64_decode_data_blob(buf + 3);
+	} else {
+		request = data_blob(NULL, 0);
+	}
+
+	if ((strncmp(buf, "PW ", 3) == 0)) {
+		/* The calling application wants us to use a local password (rather than winbindd) */
+
+		opt_password = strndup((const char *)request.data, request.length);
+
+		if (opt_password == NULL) {
+			DEBUG(1, ("Out of memory\n"));
+			x_fprintf(x_stdout, "BH\n");
+			data_blob_free(&request);
+			return;
+		}
+
+		x_fprintf(x_stdout, "OK\n");
+		data_blob_free(&request);
+		return;
+	}
+
+	if (strncmp(buf, "YR", 2) == 0) {
+		if (ntlmssp_state)
+			ntlmssp_end(&ntlmssp_state);
+	} else if (strncmp(buf, "KK", 2) == 0) {
+		
+	} else {
+		DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (!ntlmssp_state) {
+		if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
+			x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
+			return;
+		}
+	}
+
+	DEBUG(10, ("got NTLMSSP packet:\n"));
+	dump_data(10, (const char *)request.data, request.length);
+
+	nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
+	
+	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		char *reply_base64 = base64_encode_data_blob(reply);
+		x_fprintf(x_stdout, "TT %s\n", reply_base64);
+		SAFE_FREE(reply_base64);
+		data_blob_free(&reply);
+		DEBUG(10, ("NTLMSSP challenge\n"));
+	} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
+		x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
+		DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
+
+		ntlmssp_end(&ntlmssp_state);
+	} else if (!NT_STATUS_IS_OK(nt_status)) {
+		x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
+		DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
+	} else {
+		x_fprintf(x_stdout, "AF %s\n", (char *)ntlmssp_state->auth_context);
+		DEBUG(10, ("NTLMSSP OK!\n"));
+	}
+
+	data_blob_free(&request);
+}
+
+static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode, 
+					 char *buf, int length) 
+{
+	static NTLMSSP_STATE *ntlmssp_state = NULL;
+	DATA_BLOB request, reply;
+	NTSTATUS nt_status;
+	BOOL first = False;
+	
+	if (strlen(buf) < 2) {
+		DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (strlen(buf) > 3) {
+		request = base64_decode_data_blob(buf + 3);
+	} else {
+		request = data_blob(NULL, 0);
+	}
+
+	if (strncmp(buf, "PW ", 3) == 0) {
+		/* We asked for a password and obviously got it :-) */
+
+		opt_password = strndup((const char *)request.data, request.length);
+
+		if (opt_password == NULL) {
+			DEBUG(1, ("Out of memory\n"));
+			x_fprintf(x_stdout, "BH\n");
+			data_blob_free(&request);
+			return;
+		}
+
+		x_fprintf(x_stdout, "OK\n");
+		data_blob_free(&request);
+		return;
+	}
+
+	if (opt_password == NULL) {
+		
+		/* Request a password from the calling process.  After
+		   sending it, the calling process should retry asking for the negotiate. */
+		
+		DEBUG(10, ("Requesting password\n"));
+		x_fprintf(x_stdout, "PW\n");
+		return;
+	}
+
+	if (strncmp(buf, "YR", 2) == 0) {
+		if (ntlmssp_state)
+			ntlmssp_end(&ntlmssp_state);
+	} else if (strncmp(buf, "TT", 2) == 0) {
+		
+	} else {
+		DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (!ntlmssp_state) {
+		if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_client(&ntlmssp_state))) {
+			x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
+			return;
+		}
+		first = True;
+	}
+
+	DEBUG(10, ("got NTLMSSP packet:\n"));
+	dump_data(10, (const char *)request.data, request.length);
+
+	nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
+	
+	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		char *reply_base64 = base64_encode_data_blob(reply);
+		if (first) {
+			x_fprintf(x_stdout, "YR %s\n", reply_base64);
+		} else { 
+			x_fprintf(x_stdout, "KK %s\n", reply_base64);
+		}
+		SAFE_FREE(reply_base64);
+		data_blob_free(&reply);
+		DEBUG(10, ("NTLMSSP challenge\n"));
+	} else if (NT_STATUS_IS_OK(nt_status)) {
+		x_fprintf(x_stdout, "AF\n");
+		DEBUG(10, ("NTLMSSP OK!\n"));
+		if (ntlmssp_state)
+			ntlmssp_end(&ntlmssp_state);
+	} else {
+		x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
+		DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
+		if (ntlmssp_state)
+			ntlmssp_end(&ntlmssp_state);
+	}
+
+	data_blob_free(&request);
+}
+
+static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode, 
+				       char *buf, int length) 
+{
+	char *user, *pass;	
+	user=buf;
+	
+	pass=memchr(buf,' ',length);
+	if (!pass) {
+		DEBUG(2, ("Password not found. Denying access\n"));
+		x_fprintf(x_stderr, "ERR\n");
+		return;
+	}
+	*pass='\0';
+	pass++;
+	
+	if (stdio_helper_mode == SQUID_2_5_BASIC) {
+		rfc1738_unescape(user);
+		rfc1738_unescape(pass);
+	}
+	
+	if (check_plaintext_auth(user, pass, False)) {
+		x_fprintf(x_stdout, "OK\n");
+	} else {
+		x_fprintf(x_stdout, "ERR\n");
+	}
+}
+
+static void offer_gss_spnego_mechs(void) {
+
+	DATA_BLOB token;
+	SPNEGO_DATA spnego;
+	ssize_t len;
+	char *reply_base64;
+
+	pstring principal;
+	pstring myname_lower;
+
+	ZERO_STRUCT(spnego);
+
+	pstrcpy(myname_lower, global_myname());
+	strlower_m(myname_lower);
+
+	pstr_sprintf(principal, "%s$@%s", myname_lower, lp_realm());
+
+	/* Server negTokenInit (mech offerings) */
+	spnego.type = SPNEGO_NEG_TOKEN_INIT;
+	spnego.negTokenInit.mechTypes = smb_xmalloc(sizeof(char *) * 3);
+#ifdef HAVE_KRB5
+	spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
+	spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
+	spnego.negTokenInit.mechTypes[2] = NULL;
+#else
+	spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
+	spnego.negTokenInit.mechTypes[1] = NULL;
+#endif
+
+
+	spnego.negTokenInit.mechListMIC = data_blob(principal,
+						    strlen(principal));
+
+	len = write_spnego_data(&token, &spnego);
+	free_spnego_data(&spnego);
+
+	if (len == -1) {
+		DEBUG(1, ("Could not write SPNEGO data blob\n"));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	reply_base64 = base64_encode_data_blob(token);
+	x_fprintf(x_stdout, "TT %s *\n", reply_base64);
+
+	SAFE_FREE(reply_base64);
+	data_blob_free(&token);
+	DEBUG(10, ("sent SPNEGO negTokenInit\n"));
+	return;
+}
+
+static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode, 
+				      char *buf, int length) 
+{
+	static NTLMSSP_STATE *ntlmssp_state = NULL;
+	SPNEGO_DATA request, response;
+	DATA_BLOB token;
+	NTSTATUS status;
+	ssize_t len;
+
+	char *user = NULL;
+	char *domain = NULL;
+
+	const char *reply_code;
+	char       *reply_base64;
+	pstring     reply_argument;
+
+	if (strlen(buf) < 2) {
+
+		if (ntlmssp_state != NULL) {
+			DEBUG(1, ("Request for initial SPNEGO request where "
+				  "we already have a state\n"));
+			x_fprintf(x_stdout, "BH\n");
+			return;
+		}
+
+		DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if ( (strlen(buf) == 2) && (strcmp(buf, "YR") == 0) ) {
+
+		/* Initial request, get the negTokenInit offering
+                   mechanisms */
+
+		offer_gss_spnego_mechs();
+		return;
+	}
+
+	/* All subsequent requests are "KK" (Knock, Knock ;)) and have
+	   a blob. This might be negTokenInit or negTokenTarg */
+
+	if ( (strlen(buf) <= 3) || (strncmp(buf, "KK", 2) != 0) ) {
+		DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	token = base64_decode_data_blob(buf + 3);
+	len = read_spnego_data(token, &request);
+	data_blob_free(&token);
+
+	if (len == -1) {
+		DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (request.type == SPNEGO_NEG_TOKEN_INIT) {
+
+		/* Second request from Client. This is where the
+		   client offers its mechanism to use. */
+
+		if ( (request.negTokenInit.mechTypes == NULL) ||
+		     (request.negTokenInit.mechTypes[0] == NULL) ) {
+			DEBUG(1, ("Client did not offer any mechanism"));
+			x_fprintf(x_stdout, "BH\n");
+			return;
+		}
+
+		if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
+
+			if ( request.negTokenInit.mechToken.data == NULL ) {
+				DEBUG(1, ("Client did not provide  NTLMSSP data\n"));
+				x_fprintf(x_stdout, "BH\n");
+				return;
+			}
+
+			if ( ntlmssp_state != NULL ) {
+				DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
+					  "already got one\n"));
+				x_fprintf(x_stdout, "BH\n");
+				ntlmssp_end(&ntlmssp_state);
+				return;
+			}
+
+			if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
+				x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
+				return;
+			}
+
+			DEBUG(10, ("got NTLMSSP packet:\n"));
+			dump_data(10, (const char *)request.negTokenInit.mechToken.data,
+				  request.negTokenInit.mechToken.length);
+
+			response.type = SPNEGO_NEG_TOKEN_TARG;
+			response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
+			response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
+
+			status = ntlmssp_update(ntlmssp_state,
+						       request.negTokenInit.mechToken,
+						       &response.negTokenTarg.responseToken);
+		}
+
+#ifdef HAVE_KRB5
+		if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
+
+			char *principal;
+			DATA_BLOB auth_data;
+			DATA_BLOB ap_rep;
+			DATA_BLOB session_key;
+
+			if ( request.negTokenInit.mechToken.data == NULL ) {
+				DEBUG(1, ("Client did not provide Kerberos data\n"));
+				x_fprintf(x_stdout, "BH\n");
+				return;
+			}
+
+			response.type = SPNEGO_NEG_TOKEN_TARG;
+			response.negTokenTarg.supportedMech = strdup(OID_KERBEROS5_OLD);
+			response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
+			response.negTokenTarg.responseToken = data_blob(NULL, 0);
+
+			status = ads_verify_ticket(lp_realm(),
+						   &request.negTokenInit.mechToken,
+						   &principal, &auth_data, &ap_rep,
+						   &session_key);
+
+			/* Now in "principal" we have the name we are
+                           authenticated as. */
+
+			if (NT_STATUS_IS_OK(status)) {
+
+				domain = strchr(principal, '@');
+
+				if (domain == NULL) {
+					DEBUG(1, ("Did not get a valid principal "
+						  "from ads_verify_ticket\n"));
+					x_fprintf(x_stdout, "BH\n");
+					return;
+				}
+
+				*domain++ = '\0';
+				domain = strdup(domain);
+				user = strdup(principal);
+
+				data_blob_free(&ap_rep);
+				data_blob_free(&auth_data);
+
+				SAFE_FREE(principal);
+			}
+		}
+#endif
+
+	} else {
+
+		if ( (request.negTokenTarg.supportedMech == NULL) ||
+		     ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
+			/* Kerberos should never send a negTokenTarg, OID_NTLMSSP
+			   is the only one we support that sends this stuff */
+			DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
+				  request.negTokenTarg.supportedMech));
+			x_fprintf(x_stdout, "BH\n");
+			return;
+		}
+
+		if (request.negTokenTarg.responseToken.data == NULL) {
+			DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
+			x_fprintf(x_stdout, "BH\n");
+			return;
+		}
+
+		status = ntlmssp_update(ntlmssp_state,
+					       request.negTokenTarg.responseToken,
+					       &response.negTokenTarg.responseToken);
+
+		response.type = SPNEGO_NEG_TOKEN_TARG;
+		response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
+		response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
+
+		if (NT_STATUS_IS_OK(status)) {
+			user = strdup(ntlmssp_state->user);
+			domain = strdup(ntlmssp_state->domain);
+			ntlmssp_end(&ntlmssp_state);
+		}
+	}
+
+	free_spnego_data(&request);
+
+	if (NT_STATUS_IS_OK(status)) {
+		response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
+		reply_code = "AF";
+		pstr_sprintf(reply_argument, "%s\\%s", domain, user);
+	} else if (NT_STATUS_EQUAL(status,
+				   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
+		reply_code = "TT";
+		pstr_sprintf(reply_argument, "*");
+	} else {
+		response.negTokenTarg.negResult = SPNEGO_REJECT;
+		reply_code = "NA";
+		pstrcpy(reply_argument, nt_errstr(status));
+	}
+
+	SAFE_FREE(user);
+	SAFE_FREE(domain);
+
+	len = write_spnego_data(&token, &response);
+	free_spnego_data(&response);
+
+	if (len == -1) {
+		DEBUG(1, ("Could not write SPNEGO data blob\n"));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	reply_base64 = base64_encode_data_blob(token);
+
+	x_fprintf(x_stdout, "%s %s %s\n",
+		  reply_code, reply_base64, reply_argument);
+
+	SAFE_FREE(reply_base64);
+	data_blob_free(&token);
+
+	return;
+}
+
+static NTLMSSP_STATE *client_ntlmssp_state = NULL;
+
+static BOOL manage_client_ntlmssp_init(SPNEGO_DATA spnego)
+{
+	NTSTATUS status;
+	DATA_BLOB null_blob = data_blob(NULL, 0);
+	DATA_BLOB to_server;
+	char *to_server_base64;
+	const char *my_mechs[] = {OID_NTLMSSP, NULL};
+
+	DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
+
+	if (client_ntlmssp_state != NULL) {
+		DEBUG(1, ("Request for initial SPNEGO request where "
+			  "we already have a state\n"));
+		return False;
+	}
+
+	if (!client_ntlmssp_state) {
+		if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
+			x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
+			return False;
+		}
+	}
+
+
+	if (opt_password == NULL) {
+
+		/* Request a password from the calling process.  After
+		   sending it, the calling process should retry with
+		   the negTokenInit. */
+
+		DEBUG(10, ("Requesting password\n"));
+		x_fprintf(x_stdout, "PW\n");
+		return True;
+	}
+
+	spnego.type = SPNEGO_NEG_TOKEN_INIT;
+	spnego.negTokenInit.mechTypes = my_mechs;
+	spnego.negTokenInit.reqFlags = 0;
+	spnego.negTokenInit.mechListMIC = null_blob;
+
+	status = ntlmssp_update(client_ntlmssp_state, null_blob,
+				       &spnego.negTokenInit.mechToken);
+
+	if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED, got: %s\n",
+			  nt_errstr(status)));
+		ntlmssp_end(&client_ntlmssp_state);
+		return False;
+	}
+
+	write_spnego_data(&to_server, &spnego);
+	data_blob_free(&spnego.negTokenInit.mechToken);
+
+	to_server_base64 = base64_encode_data_blob(to_server);
+	data_blob_free(&to_server);
+	x_fprintf(x_stdout, "KK %s\n", to_server_base64);
+	SAFE_FREE(to_server_base64);
+	return True;
+}
+
+static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
+{
+	NTSTATUS status;
+	DATA_BLOB null_blob = data_blob(NULL, 0);
+	DATA_BLOB request;
+	DATA_BLOB to_server;
+	char *to_server_base64;
+
+	DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
+
+	if (client_ntlmssp_state == NULL) {
+		DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
+		x_fprintf(x_stdout, "BH\n");
+		ntlmssp_end(&client_ntlmssp_state);
+		return;
+	}
+
+	if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
+		x_fprintf(x_stdout, "NA\n");
+		ntlmssp_end(&client_ntlmssp_state);
+		return;
+	}
+
+	if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
+		x_fprintf(x_stdout, "AF\n");
+		ntlmssp_end(&client_ntlmssp_state);
+		return;
+	}
+
+	status = ntlmssp_update(client_ntlmssp_state,
+				       spnego.negTokenTarg.responseToken,
+				       &request);
+		
+	if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
+			  "ntlmssp_client_update, got: %s\n",
+			  nt_errstr(status)));
+		x_fprintf(x_stdout, "BH\n");
+		data_blob_free(&request);
+		ntlmssp_end(&client_ntlmssp_state);
+		return;
+	}
+
+	spnego.type = SPNEGO_NEG_TOKEN_TARG;
+	spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
+	spnego.negTokenTarg.supportedMech = OID_NTLMSSP;
+	spnego.negTokenTarg.responseToken = request;
+	spnego.negTokenTarg.mechListMIC = null_blob;
+	
+	write_spnego_data(&to_server, &spnego);
+	data_blob_free(&request);
+
+	to_server_base64 = base64_encode_data_blob(to_server);
+	data_blob_free(&to_server);
+	x_fprintf(x_stdout, "KK %s\n", to_server_base64);
+	SAFE_FREE(to_server_base64);
+	return;
+}
+
+#ifdef HAVE_KRB5
+
+static BOOL manage_client_krb5_init(SPNEGO_DATA spnego)
+{
+	char *principal;
+	DATA_BLOB tkt, to_server;
+	DATA_BLOB session_key_krb5;
+	SPNEGO_DATA reply;
+	char *reply_base64;
+	int retval;
+	
+	const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
+	ssize_t len;
+
+	if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
+	     (spnego.negTokenInit.mechListMIC.length == 0) ) {
+		DEBUG(1, ("Did not get a principal for krb5\n"));
+		return False;
+	}
+
+	principal = malloc(spnego.negTokenInit.mechListMIC.length+1);
+
+	if (principal == NULL) {
+		DEBUG(1, ("Could not malloc principal\n"));
+		return False;
+	}
+
+	memcpy(principal, spnego.negTokenInit.mechListMIC.data,
+	       spnego.negTokenInit.mechListMIC.length);
+	principal[spnego.negTokenInit.mechListMIC.length] = '\0';
+
+	retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
+
+	if (retval) {
+
+		pstring user;
+
+		/* Let's try to first get the TGT, for that we need a
+                   password. */
+
+		if (opt_password == NULL) {
+			DEBUG(10, ("Requesting password\n"));
+			x_fprintf(x_stdout, "PW\n");
+			return True;
+		}
+
+		pstr_sprintf(user, "%s@%s", opt_username, opt_domain);
+
+		if ((retval = kerberos_kinit_password(user, opt_password, 
+						      0, NULL))) {
+			DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
+			x_fprintf(x_stdout, "NA\n");
+			return True;
+		}
+
+		retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
+
+		if (retval) {
+			DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
+		}
+	}
+
+	data_blob_free(&session_key_krb5);
+
+	ZERO_STRUCT(reply);
+
+	reply.type = SPNEGO_NEG_TOKEN_INIT;
+	reply.negTokenInit.mechTypes = my_mechs;
+	reply.negTokenInit.reqFlags = 0;
+	reply.negTokenInit.mechToken = tkt;
+	reply.negTokenInit.mechListMIC = data_blob(NULL, 0);
+
+	len = write_spnego_data(&to_server, &reply);
+	data_blob_free(&tkt);
+
+	if (len == -1) {
+		DEBUG(1, ("Could not write SPNEGO data blob\n"));
+		return False;
+	}
+
+	reply_base64 = base64_encode_data_blob(to_server);
+	x_fprintf(x_stdout, "KK %s *\n", reply_base64);
+
+	SAFE_FREE(reply_base64);
+	data_blob_free(&to_server);
+	DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
+	return True;
+}
+
+static void manage_client_krb5_targ(SPNEGO_DATA spnego)
+{
+	switch (spnego.negTokenTarg.negResult) {
+	case SPNEGO_ACCEPT_INCOMPLETE:
+		DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
+		x_fprintf(x_stdout, "BH\n");
+		break;
+	case SPNEGO_ACCEPT_COMPLETED:
+		DEBUG(10, ("Accept completed\n"));
+		x_fprintf(x_stdout, "AF\n");
+		break;
+	case SPNEGO_REJECT:
+		DEBUG(10, ("Rejected\n"));
+		x_fprintf(x_stdout, "NA\n");
+		break;
+	default:
+		DEBUG(1, ("Got an invalid negTokenTarg\n"));
+		x_fprintf(x_stdout, "AF\n");
+	}
+}
+
+#endif
+
+static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode, 
+					     char *buf, int length) 
+{
+	DATA_BLOB request;
+	SPNEGO_DATA spnego;
+	ssize_t len;
+
+	if (strlen(buf) <= 3) {
+		DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	request = base64_decode_data_blob(buf+3);
+
+	if (strncmp(buf, "PW ", 3) == 0) {
+
+		/* We asked for a password and obviously got it :-) */
+
+		opt_password = strndup((const char *)request.data, request.length);
+
+		if (opt_password == NULL) {
+			DEBUG(1, ("Out of memory\n"));
+			x_fprintf(x_stdout, "BH\n");
+			data_blob_free(&request);
+			return;
+		}
+
+		x_fprintf(x_stdout, "OK\n");
+		data_blob_free(&request);
+		return;
+	}
+
+	if ( (strncmp(buf, "TT ", 3) != 0) &&
+	     (strncmp(buf, "AF ", 3) != 0) &&
+	     (strncmp(buf, "NA ", 3) != 0) ) {
+		DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
+		x_fprintf(x_stdout, "BH\n");
+		data_blob_free(&request);
+		return;
+	}
+
+	/* So we got a server challenge to generate a SPNEGO
+           client-to-server request... */
+
+	len = read_spnego_data(request, &spnego);
+	data_blob_free(&request);
+
+	if (len == -1) {
+		DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
+
+		/* The server offers a list of mechanisms */
+
+		const char **mechType = spnego.negTokenInit.mechTypes;
+
+		while (*mechType != NULL) {
+
+#ifdef HAVE_KRB5
+			if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
+			     (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
+				if (manage_client_krb5_init(spnego))
+					goto out;
+			}
+#endif
+
+			if (strcmp(*mechType, OID_NTLMSSP) == 0) {
+				if (manage_client_ntlmssp_init(spnego))
+					goto out;
+			}
+
+			mechType++;
+		}
+
+		DEBUG(1, ("Server offered no compatible mechanism\n"));
+		x_fprintf(x_stdout, "BH\n");
+		return;
+	}
+
+	if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
+
+		if (spnego.negTokenTarg.supportedMech == NULL) {
+			/* On accept/reject Windows does not send the
+                           mechanism anymore. Handle that here and
+                           shut down the mechanisms. */
+
+			switch (spnego.negTokenTarg.negResult) {
+			case SPNEGO_ACCEPT_COMPLETED:
+				x_fprintf(x_stdout, "AF\n");
+				break;
+			case SPNEGO_REJECT:
+				x_fprintf(x_stdout, "NA\n");
+				break;
+			default:
+				DEBUG(1, ("Got a negTokenTarg with no mech and an "
+					  "unknown negResult: %d\n",
+					  spnego.negTokenTarg.negResult));
+				x_fprintf(x_stdout, "BH\n");
+			}
+
+			ntlmssp_end(&client_ntlmssp_state);
+			goto out;
+		}
+
+		if (strcmp(spnego.negTokenTarg.supportedMech,
+			   OID_NTLMSSP) == 0) {
+			manage_client_ntlmssp_targ(spnego);
+			goto out;
+		}
+
+#if HAVE_KRB5
+		if (strcmp(spnego.negTokenTarg.supportedMech,
+			   OID_KERBEROS5_OLD) == 0) {
+			manage_client_krb5_targ(spnego);
+			goto out;
+		}
+#endif
+
+	}
+
+	DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
+	x_fprintf(x_stdout, "BH\n");
+	return;
+
+ out:
+	free_spnego_data(&spnego);
+	return;
+}
+
+static void manage_squid_request(enum stdio_helper_mode helper_mode, stdio_helper_function fn) 
+{
+	char buf[SQUID_BUFFER_SIZE+1];
+	int length;
+	char *c;
+	static BOOL err;
+
+	/* this is not a typo - x_fgets doesn't work too well under squid */
+	if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
+		DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
+			  strerror(ferror(stdin))));
+		exit(1);    /* BIIG buffer */
+	}
+    
+	c=memchr(buf,'\n',sizeof(buf)-1);
+	if (c) {
+		*c = '\0';
+		length = c-buf;
+	} else {
+		err = 1;
+		return;
+	}
+	if (err) {
+		DEBUG(2, ("Oversized message\n"));
+		x_fprintf(x_stderr, "ERR\n");
+		err = 0;
+		return;
+	}
+
+	DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
+
+	if (buf[0] == '\0') {
+		DEBUG(2, ("Invalid Request\n"));
+		x_fprintf(x_stderr, "ERR\n");
+		return;
+	}
+	
+	fn(helper_mode, buf, length);
+}
+
+
+static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
+	/* initialize FDescs */
+	x_setbuf(x_stdout, NULL);
+	x_setbuf(x_stderr, NULL);
+	while(1) {
+		manage_squid_request(stdio_mode, fn);
+	}
+}
+
+
+/* Authenticate a user with a challenge/response */
+
+static BOOL check_auth_crap(void)
+{
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	char lm_key[8];
+	char nt_key[16];
+	char *hex_lm_key;
+	char *hex_nt_key;
+	char *error_string;
+	static uint8 zeros[16];
+
+	x_setbuf(x_stdout, NULL);
+
+	if (request_lm_key) 
+		flags |= WBFLAG_PAM_LMKEY;
+
+	if (request_nt_key) 
+		flags |= WBFLAG_PAM_NTKEY;
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &opt_challenge, 
+					      &opt_lm_response, 
+					      &opt_nt_response, 
+					      flags,
+					      (unsigned char *)lm_key, 
+					      (unsigned char *)nt_key, 
+					      &error_string, NULL);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		x_fprintf(x_stdout, "%s (0x%x)\n", 
+			  error_string,
+			  NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return False;
+	}
+
+	if (request_lm_key 
+	    && (memcmp(zeros, lm_key, 
+		       sizeof(lm_key)) != 0)) {
+		hex_encode((const unsigned char *)lm_key,
+			   sizeof(lm_key),
+			   &hex_lm_key);
+		x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
+		SAFE_FREE(hex_lm_key);
+	}
+	if (request_nt_key 
+	    && (memcmp(zeros, nt_key, 
+		       sizeof(nt_key)) != 0)) {
+		hex_encode((const unsigned char *)nt_key, 
+			   sizeof(nt_key), 
+			   &hex_nt_key);
+		x_fprintf(x_stdout, "NT_KEY: %s\n", hex_nt_key);
+		SAFE_FREE(hex_nt_key);
+	}
+
+        return True;
+}
+
+/* 
+   Authenticate a user with a challenge/response, checking session key
+   and valid authentication types
+*/
+
+static 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, False);
+	return chal;
+}
+
+/* 
+ * Test the normal 'LM and NTLM' combination
+ */
+
+static BOOL test_lm_ntlm_broken(enum ntlm_break break_which) 
+{
+	BOOL pass = True;
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	DATA_BLOB lm_response = data_blob(NULL, 24);
+	DATA_BLOB nt_response = data_blob(NULL, 24);
+	DATA_BLOB session_key = data_blob(NULL, 16);
+
+	uchar lm_key[8];
+	uchar nt_key[16];
+	uchar lm_hash[16];
+	uchar nt_hash[16];
+	DATA_BLOB chall = get_challenge();
+	char *error_string;
+	
+	ZERO_STRUCT(lm_key);
+	ZERO_STRUCT(nt_key);
+
+	flags |= WBFLAG_PAM_LMKEY;
+	flags |= WBFLAG_PAM_NTKEY;
+
+	SMBencrypt(opt_password,chall.data,lm_response.data);
+	E_deshash(opt_password, lm_hash); 
+
+	SMBNTencrypt(opt_password,chall.data,nt_response.data);
+
+	E_md4hash(opt_password, nt_hash);
+	SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
+
+	switch (break_which) {
+	case BREAK_NONE:
+		break;
+	case BREAK_LM:
+		lm_response.data[0]++;
+		break;
+	case BREAK_NT:
+		nt_response.data[0]++;
+		break;
+	case NO_LM:
+		data_blob_free(&lm_response);
+		break;
+	case NO_NT:
+		data_blob_free(&nt_response);
+		break;
+	}
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &chall,
+					      &lm_response,
+					      &nt_response,
+					      flags,
+					      lm_key, 
+					      nt_key,
+					      &error_string, NULL);
+	
+	data_blob_free(&lm_response);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		d_printf("%s (0x%x)\n", 
+			 error_string,
+			 NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return break_which == BREAK_NT;
+	}
+
+	if (memcmp(lm_hash, lm_key, 
+		   sizeof(lm_key)) != 0) {
+		DEBUG(1, ("LM Key does not match expectations!\n"));
+ 		DEBUG(1, ("lm_key:\n"));
+		dump_data(1, (const char *)lm_key, 8);
+		DEBUG(1, ("expected:\n"));
+		dump_data(1, (const char *)lm_hash, 8);
+		pass = False;
+	}
+
+	if (break_which == NO_NT) {
+		if (memcmp(lm_hash, nt_key, 
+			   8) != 0) {
+			DEBUG(1, ("NT Session Key does not match expectations (should be LM hash)!\n"));
+			DEBUG(1, ("nt_key:\n"));
+			dump_data(1, (const char *)nt_key, sizeof(nt_key));
+			DEBUG(1, ("expected:\n"));
+			dump_data(1, (const char *)lm_hash, sizeof(lm_hash));
+			pass = False;
+		}
+	} else {		
+		if (memcmp(session_key.data, nt_key, 
+			   sizeof(nt_key)) != 0) {
+			DEBUG(1, ("NT Session Key does not match expectations!\n"));
+			DEBUG(1, ("nt_key:\n"));
+			dump_data(1, (const char *)nt_key, 16);
+			DEBUG(1, ("expected:\n"));
+			dump_data(1, (const char *)session_key.data, session_key.length);
+			pass = False;
+		}
+	}
+        return pass;
+}
+
+/* 
+ * Test LM authentication, no NT response supplied
+ */
+
+static BOOL test_lm(void) 
+{
+
+	return test_lm_ntlm_broken(NO_NT);
+}
+
+/* 
+ * Test the NTLM response only, no LM.
+ */
+
+static BOOL test_ntlm(void) 
+{
+	return test_lm_ntlm_broken(NO_LM);
+}
+
+/* 
+ * Test the NTLM response only, but in the LM field.
+ */
+
+static BOOL test_ntlm_in_lm(void) 
+{
+	BOOL pass = True;
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	DATA_BLOB nt_response = data_blob(NULL, 24);
+
+	uchar lm_key[8];
+	uchar lm_hash[16];
+	uchar nt_key[16];
+	DATA_BLOB chall = get_challenge();
+	char *error_string;
+	
+	ZERO_STRUCT(nt_key);
+
+	flags |= WBFLAG_PAM_LMKEY;
+	flags |= WBFLAG_PAM_NTKEY;
+
+	SMBNTencrypt(opt_password,chall.data,nt_response.data);
+
+	E_deshash(opt_password, lm_hash); 
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &chall,
+					      &nt_response,
+					      NULL,
+					      flags,
+					      lm_key,
+					      nt_key,
+					      &error_string, NULL);
+	
+	data_blob_free(&nt_response);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		d_printf("%s (0x%x)\n", 
+			 error_string,
+			 NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return False;
+	}
+
+	if (memcmp(lm_hash, lm_key, 
+		   sizeof(lm_key)) != 0) {
+		DEBUG(1, ("LM Key does not match expectations!\n"));
+ 		DEBUG(1, ("lm_key:\n"));
+		dump_data(1, (const char *)lm_key, 8);
+		DEBUG(1, ("expected:\n"));
+		dump_data(1, (const char *)lm_hash, 8);
+		pass = False;
+	}
+	if (memcmp(lm_hash, nt_key, 8) != 0) {
+		DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n"));
+ 		DEBUG(1, ("nt_key:\n"));
+		dump_data(1, (const char *)nt_key, 16);
+ 		DEBUG(1, ("expected:\n"));
+		dump_data(1, (const char *)lm_hash, 8);
+		pass = False;
+	}
+        return pass;
+}
+
+/* 
+ * Test the NTLM response only, but in the both the NT and LM fields.
+ */
+
+static BOOL test_ntlm_in_both(void) 
+{
+	BOOL pass = True;
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	DATA_BLOB nt_response = data_blob(NULL, 24);
+	DATA_BLOB session_key = data_blob(NULL, 16);
+
+	char lm_key[8];
+	char lm_hash[16];
+	char nt_key[16];
+	char nt_hash[16];
+	DATA_BLOB chall = get_challenge();
+	char *error_string;
+	
+	ZERO_STRUCT(lm_key);
+	ZERO_STRUCT(nt_key);
+
+	flags |= WBFLAG_PAM_LMKEY;
+	flags |= WBFLAG_PAM_NTKEY;
+
+	SMBNTencrypt(opt_password,chall.data,nt_response.data);
+	E_md4hash(opt_password, (unsigned char *)nt_hash);
+	SMBsesskeygen_ntv1((const unsigned char *)nt_hash, NULL, session_key.data);
+
+	E_deshash(opt_password, (unsigned char *)lm_hash); 
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &chall,
+					      &nt_response,
+					      &nt_response,
+					      flags,
+					      (unsigned char *)lm_key,
+					      (unsigned char *)nt_key,
+					      &error_string, NULL);
+	
+	data_blob_free(&nt_response);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		d_printf("%s (0x%x)\n", 
+			 error_string,
+			 NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return False;
+	}
+
+	if (memcmp(lm_hash, lm_key, 
+		   sizeof(lm_key)) != 0) {
+		DEBUG(1, ("LM Key does not match expectations!\n"));
+ 		DEBUG(1, ("lm_key:\n"));
+		dump_data(1, lm_key, 8);
+		DEBUG(1, ("expected:\n"));
+		dump_data(1, lm_hash, 8);
+		pass = False;
+	}
+	if (memcmp(session_key.data, nt_key, 
+		   sizeof(nt_key)) != 0) {
+		DEBUG(1, ("NT Session Key does not match expectations!\n"));
+ 		DEBUG(1, ("nt_key:\n"));
+		dump_data(1, nt_key, 16);
+ 		DEBUG(1, ("expected:\n"));
+		dump_data(1, (const char *)session_key.data, session_key.length);
+		pass = False;
+	}
+
+
+        return pass;
+}
+
+/* 
+ * Test the NTLMv2 and LMv2 responses
+ */
+
+static BOOL test_lmv2_ntlmv2_broken(enum ntlm_break break_which) 
+{
+	BOOL pass = True;
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	DATA_BLOB ntlmv2_response = data_blob(NULL, 0);
+	DATA_BLOB lmv2_response = data_blob(NULL, 0);
+	DATA_BLOB nt_session_key = data_blob(NULL, 0);
+	DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
+
+	uchar nt_key[16];
+	DATA_BLOB chall = get_challenge();
+	char *error_string;
+
+	ZERO_STRUCT(nt_key);
+	
+	flags |= WBFLAG_PAM_NTKEY;
+
+	if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
+			      &names_blob,
+			      &lmv2_response, &ntlmv2_response, 
+			      &nt_session_key)) {
+		data_blob_free(&names_blob);
+		return False;
+	}
+	data_blob_free(&names_blob);
+
+	switch (break_which) {
+	case BREAK_NONE:
+		break;
+	case BREAK_LM:
+		lmv2_response.data[0]++;
+		break;
+	case BREAK_NT:
+		ntlmv2_response.data[0]++;
+		break;
+	case NO_LM:
+		data_blob_free(&lmv2_response);
+		break;
+	case NO_NT:
+		data_blob_free(&ntlmv2_response);
+		break;
+	}
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &chall,
+					      &lmv2_response,
+					      &ntlmv2_response,
+					      flags,
+					      NULL, 
+					      nt_key,
+					      &error_string, NULL);
+	
+	data_blob_free(&lmv2_response);
+	data_blob_free(&ntlmv2_response);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		d_printf("%s (0x%x)\n", 
+			 error_string,
+			 NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return break_which == BREAK_NT;
+	}
+
+	if (break_which != NO_NT && break_which != BREAK_NT && memcmp(nt_session_key.data, nt_key, 
+		   sizeof(nt_key)) != 0) {
+		DEBUG(1, ("NT Session Key does not match expectations!\n"));
+ 		DEBUG(1, ("nt_key:\n"));
+		dump_data(1, (const char *)nt_key, 16);
+ 		DEBUG(1, ("expected:\n"));
+		dump_data(1, (const char *)nt_session_key.data, nt_session_key.length);
+		pass = False;
+	}
+        return pass;
+}
+
+/* 
+ * Test the NTLMv2 and LMv2 responses
+ */
+
+static BOOL test_lmv2_ntlmv2(void) 
+{
+	return test_lmv2_ntlmv2_broken(BREAK_NONE);
+}
+
+/* 
+ * Test the LMv2 response only
+ */
+
+static BOOL test_lmv2(void) 
+{
+	return test_lmv2_ntlmv2_broken(NO_NT);
+}
+
+/* 
+ * Test the NTLMv2 response only
+ */
+
+static BOOL test_ntlmv2(void) 
+{
+	return test_lmv2_ntlmv2_broken(NO_LM);
+}
+
+static BOOL test_lm_ntlm(void) 
+{
+	return test_lm_ntlm_broken(BREAK_NONE);
+}
+
+static BOOL test_ntlm_lm_broken(void) 
+{
+	return test_lm_ntlm_broken(BREAK_LM);
+}
+
+static BOOL test_ntlm_ntlm_broken(void) 
+{
+	return test_lm_ntlm_broken(BREAK_NT);
+}
+
+static BOOL test_ntlmv2_lmv2_broken(void) 
+{
+	return test_lmv2_ntlmv2_broken(BREAK_LM);
+}
+
+static BOOL test_ntlmv2_ntlmv2_broken(void) 
+{
+	return test_lmv2_ntlmv2_broken(BREAK_NT);
+}
+
+static BOOL test_plaintext(enum ntlm_break break_which)
+{
+	NTSTATUS nt_status;
+	uint32 flags = 0;
+	DATA_BLOB nt_response = data_blob(NULL, 0);
+	DATA_BLOB lm_response = data_blob(NULL, 0);
+	char *password;
+
+	uchar nt_key[16];
+	uchar lm_key[16];
+	static const uchar zeros[8];
+	DATA_BLOB chall = data_blob(zeros, sizeof(zeros));
+	char *error_string;
+
+	ZERO_STRUCT(nt_key);
+	
+	flags |= WBFLAG_PAM_NTKEY;
+	flags |= WBFLAG_PAM_LMKEY;
+
+	if ((push_ucs2_allocate((smb_ucs2_t **)&nt_response.data, opt_password)) == -1) {
+		DEBUG(0, ("push_ucs2_allocate failed!\n"));
+		exit(1);
+	}
+
+	nt_response.length = strlen_w(((void *)nt_response.data))*sizeof(smb_ucs2_t);
+
+	password = strdup_upper(opt_password);
+
+	if ((convert_string_allocate(NULL, CH_UNIX, 
+				     CH_DOS, password,
+				     strlen(password)+1, 
+				     (void**)&lm_response.data,True)) == -1) {
+		DEBUG(0, ("push_ascii_allocate failed!\n"));
+		exit(1);
+	}
+
+	SAFE_FREE(password);
+
+	lm_response.length = strlen(lm_response.data);
+
+	switch (break_which) {
+	case BREAK_NONE:
+		break;
+	case BREAK_LM:
+		lm_response.data[0]++;
+		break;
+	case BREAK_NT:
+		nt_response.data[0]++;
+		break;
+	case NO_LM:
+		SAFE_FREE(lm_response.data);
+		lm_response.length = 0;
+		break;
+	case NO_NT:
+		SAFE_FREE(nt_response.data);
+		nt_response.length = 0;
+		break;
+	}
+
+	nt_status = contact_winbind_auth_crap(opt_username, opt_domain, 
+					      opt_workstation,
+					      &chall,
+					      &lm_response,
+					      &nt_response,
+					      flags,
+					      lm_key,
+					      nt_key,
+					      &error_string, NULL);
+	
+	SAFE_FREE(nt_response.data);
+	SAFE_FREE(lm_response.data);
+	data_blob_free(&chall);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		d_printf("%s (0x%x)\n", 
+			 error_string,
+			 NT_STATUS_V(nt_status));
+		SAFE_FREE(error_string);
+		return break_which == BREAK_NT;
+	}
+
+        return break_which != BREAK_NT;
+}
+
+static BOOL test_plaintext_none_broken(void) {
+	return test_plaintext(BREAK_NONE);
+}
+
+static BOOL test_plaintext_lm_broken(void) {
+	return test_plaintext(BREAK_LM);
+}
+
+static BOOL test_plaintext_nt_broken(void) {
+	return test_plaintext(BREAK_NT);
+}
+
+static BOOL test_plaintext_nt_only(void) {
+	return test_plaintext(NO_LM);
+}
+
+static BOOL test_plaintext_lm_only(void) {
+	return test_plaintext(NO_NT);
+}
+
+/* 
+   Tests:
+   
+   - LM only
+   - NT and LM		   
+   - NT
+   - NT in LM field
+   - NT in both fields
+   - NTLMv2
+   - NTLMv2 and LMv2
+   - LMv2
+   - plaintext tests (in challenge-response feilds)
+  
+   check we get the correct session key in each case
+   check what values we get for the LM session key
+   
+*/
+
+static const struct ntlm_tests {
+	BOOL (*fn)(void);
+	const char *name;
+} test_table[] = {
+	{test_lm, "LM"},
+	{test_lm_ntlm, "LM and NTLM"},
+	{test_ntlm, "NTLM"},
+	{test_ntlm_in_lm, "NTLM in LM"},
+	{test_ntlm_in_both, "NTLM in both"},
+	{test_ntlmv2, "NTLMv2"},
+	{test_lmv2_ntlmv2, "NTLMv2 and LMv2"},
+	{test_lmv2, "LMv2"},
+	{test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken"},
+	{test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken"},
+	{test_ntlm_lm_broken, "NTLM and LM, LM broken"},
+	{test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken"},
+	{test_plaintext_none_broken, "Plaintext"},
+	{test_plaintext_lm_broken, "Plaintext LM broken"},
+	{test_plaintext_nt_broken, "Plaintext NT broken"},
+	{test_plaintext_nt_only, "Plaintext NT only"},
+	{test_plaintext_lm_only, "Plaintext LM only"}
+};
+
+static BOOL diagnose_ntlm_auth(void)
+{
+	unsigned int i;
+	BOOL pass = True;
+
+	for (i=0; test_table[i].fn; i++) {
+		if (!test_table[i].fn()) {
+			DEBUG(1, ("Test %s failed!\n", test_table[i].name));
+			pass = False;
+		}
+	}
+
+        return pass;
+}
+
+/* Main program */
+
+enum {
+	OPT_USERNAME = 1000,
+	OPT_DOMAIN,
+	OPT_WORKSTATION,
+	OPT_CHALLENGE,
+	OPT_RESPONSE,
+	OPT_LM,
+	OPT_NT,
+	OPT_PASSWORD,
+	OPT_LM_KEY,
+	OPT_NT_KEY,
+	OPT_DIAGNOSTICS
+};
+
+ int main(int argc, const char **argv)
+{
+	int opt;
+	static const char *helper_protocol;
+	static int diagnostics;
+
+	static const char *hex_challenge;
+	static const char *hex_lm_response;
+	static const char *hex_nt_response;
+	char *challenge;
+	char *lm_response;
+	char *nt_response;
+	size_t challenge_len;
+	size_t lm_response_len;
+	size_t nt_response_len;
+
+	poptContext pc;
+
+	/* 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
+		{ "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
+ 		{ "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
+ 		{ "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
+ 		{ "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
+ 		{ "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
+		{ "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
+		{ "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
+		{ "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},		
+		{ "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retreive LM session key"},
+		{ "request-nt-key", 0, POPT_ARG_NONE, &request_nt_key, OPT_NT_KEY, "Retreive NT session key"},
+		{ "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
+		POPT_COMMON_SAMBA
+		POPT_TABLEEND
+	};
+
+	/* Samba client initialisation */
+
+	dbf = x_stderr;
+	
+	/* Samba client initialisation */
+
+	if (!lp_load(dyn_CONFIGFILE, True, False, False)) {
+		d_fprintf(stderr, "wbinfo: error opening config file %s. Error was %s\n",
+			dyn_CONFIGFILE, strerror(errno));
+		exit(1);
+	}
+
+	/* Parse options */
+
+	pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
+
+	/* Parse command line options */
+
+	if (argc == 1) {
+		poptPrintHelp(pc, stderr, 0);
+		return 1;
+	}
+
+	pc = poptGetContext(NULL, argc, (const char **)argv, long_options, 
+			    POPT_CONTEXT_KEEP_FIRST);
+
+	while((opt = poptGetNextOpt(pc)) != -1) {
+		switch (opt) {
+		case OPT_CHALLENGE:
+			challenge = smb_xmalloc((strlen(hex_challenge))/2+1);
+			if ((challenge_len = strhex_to_str(challenge, 
+							   strlen(hex_challenge), 
+							   hex_challenge)) != 8) {
+				x_fprintf(x_stderr, "hex decode of %s failed (only got %lu bytes)!\n", 
+					hex_challenge, (unsigned long)challenge_len);
+				exit(1);
+			}
+			opt_challenge = data_blob(challenge, challenge_len);
+			SAFE_FREE(challenge);
+			break;
+		case OPT_LM: 
+			lm_response = smb_xmalloc((strlen(hex_lm_response))/2+1);
+			lm_response_len = strhex_to_str(lm_response, 	
+							strlen(hex_lm_response), 
+							hex_lm_response);
+			if (lm_response_len != 24) {
+				x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_lm_response);
+				exit(1);
+			}
+			opt_lm_response = data_blob(lm_response, lm_response_len);
+			SAFE_FREE(lm_response);
+			break;
+		case OPT_NT: 
+			nt_response = smb_xmalloc((strlen(hex_nt_response)+2)/2+1);
+			nt_response_len = strhex_to_str(nt_response, 
+							strlen(hex_nt_response), 
+							hex_nt_response);
+			if (nt_response_len < 24) {
+				x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_nt_response);
+				exit(1);
+			}
+			opt_nt_response = data_blob(nt_response, nt_response_len);
+			SAFE_FREE(nt_response);
+			break;
+		}
+	}
+
+	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, stdio_helper_protocols[i].fn);
+				exit(0);
+			}
+		}
+		x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
+
+		for (i=0; i<NUM_HELPER_MODES; i++) {
+			x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
+		}
+
+		exit(1);
+	}
+
+	if (!opt_username) {
+		x_fprintf(x_stderr, "username must be specified!\n\n");
+		poptPrintHelp(pc, stderr, 0);
+		exit(1);
+	}
+
+	if (opt_domain == NULL) {
+		opt_domain = get_winbind_domain();
+	}
+
+	if (opt_workstation == NULL) {
+		opt_workstation = "";
+	}
+
+	if (opt_challenge.length) {
+		if (!check_auth_crap()) {
+			exit(1);
+		}
+		exit(0);
+	} 
+
+	if (!opt_password) {
+		opt_password = getpass("password: ");
+	}
+
+	if (diagnostics) {
+		if (!diagnose_ntlm_auth()) {
+			exit(1);
+		}
+	} else {
+		fstring user;
+
+		fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
+		if (!check_plaintext_auth(user, opt_password, True)) {
+			exit(1);
+		}
+	}
+
+	/* Exit code */
+
+	poptFreeContext(pc);
+	return 0;
+}