wmi-1.3.16 from opsview.com

2019-02-16 00:16:52 +01:00
parent 163fdd3d1b
commit 17b3af2911
2146 changed files with 678824 additions and 0 deletions
@@ -0,0 +1,669 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Authentication utility functions
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Andrew Bartlett 2001
+   Copyright (C) Jeremy Allison 2000-2001
+   Copyright (C) Rafal Szczesniak 2002
+   Copyright (C) Stefan Metzmacher 2005
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 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"
+#include "auth/auth.h"
+#include "libcli/security/security.h"
+#include "libcli/auth/libcli_auth.h"
+#include "dsdb/samdb/samdb.h"
+#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_krb5.h"
+
+/* this default function can be used by mostly all backends
+ * which don't want to set a challenge
+ */
+NTSTATUS auth_get_challenge_not_implemented(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, DATA_BLOB *challenge)
+{
+	/* we don't want to set a challenge */
+	return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+/****************************************************************************
+ Create an auth_usersupplied_data structure after appropriate mapping.
+****************************************************************************/
+
+NTSTATUS map_user_info(TALLOC_CTX *mem_ctx,
+		       const struct auth_usersupplied_info *user_info,
+		       struct auth_usersupplied_info **user_info_mapped)
+{
+	const char *domain;
+	char *account_name;
+	char *d;
+	DEBUG(5,("map_user_info: Mapping user [%s]\\[%s] from workstation [%s]\n",
+		user_info->client.domain_name, user_info->client.account_name, user_info->workstation_name));
+
+	account_name = talloc_strdup(mem_ctx, user_info->client.account_name);
+	if (!account_name) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	
+	/* don't allow "" as a domain, fixes a Win9X bug 
+	   where it doens't supply a domain for logon script
+	   'net use' commands.                                 */
+
+	/* Split user@realm names into user and realm components.  This is TODO to fix with proper userprincipalname support */
+	if (user_info->client.domain_name && *user_info->client.domain_name) {
+		domain = user_info->client.domain_name;
+	} else if (strchr_m(user_info->client.account_name, '@')) {
+		d = strchr_m(account_name, '@');
+		if (!d) {
+			return NT_STATUS_INTERNAL_ERROR;
+		}
+		d[0] = '\0';
+		d++;
+		domain = d;
+	} else {
+		domain = lp_workgroup();
+	}
+
+	*user_info_mapped = talloc(mem_ctx, struct auth_usersupplied_info);
+	if (!*user_info_mapped) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	talloc_reference(*user_info_mapped, user_info);
+	**user_info_mapped = *user_info;
+	(*user_info_mapped)->mapped_state = True;
+	(*user_info_mapped)->mapped.domain_name = talloc_strdup(*user_info_mapped, domain);
+	(*user_info_mapped)->mapped.account_name = talloc_strdup(*user_info_mapped, account_name);
+	talloc_free(account_name);
+	if (!(*user_info_mapped)->mapped.domain_name 
+	    || !(*user_info_mapped)->mapped.account_name) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Create an auth_usersupplied_data structure after appropriate mapping.
+****************************************************************************/
+
+ NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth_context *auth_context, 
+			   enum auth_password_state to_state,
+			   const struct auth_usersupplied_info *user_info_in,
+			   const struct auth_usersupplied_info **user_info_encrypted)
+{
+	NTSTATUS nt_status;
+	struct auth_usersupplied_info *user_info_temp;
+	switch (to_state) {
+	case AUTH_PASSWORD_RESPONSE:
+		switch (user_info_in->password_state) {
+		case AUTH_PASSWORD_PLAIN:
+		{
+			const struct auth_usersupplied_info *user_info_temp2;
+			nt_status = encrypt_user_info(mem_ctx, auth_context, 
+						      AUTH_PASSWORD_HASH, 
+						      user_info_in, &user_info_temp2);
+			if (!NT_STATUS_IS_OK(nt_status)) {
+				return nt_status;
+			}
+			user_info_in = user_info_temp2;
+			/* fall through */
+		}
+		case AUTH_PASSWORD_HASH:
+		{
+			const uint8_t *challenge;
+			DATA_BLOB chall_blob;
+			user_info_temp = talloc(mem_ctx, struct auth_usersupplied_info);
+			if (!user_info_temp) {
+				return NT_STATUS_NO_MEMORY;
+			}
+			talloc_reference(user_info_temp, user_info_in);
+			*user_info_temp = *user_info_in;
+			user_info_temp->mapped_state = to_state;
+			
+			nt_status = auth_get_challenge(auth_context, &challenge);
+			if (!NT_STATUS_IS_OK(nt_status)) {
+				return nt_status;
+			}
+			
+			chall_blob = data_blob_talloc(mem_ctx, challenge, 8);
+			if (lp_client_ntlmv2_auth()) {
+				DATA_BLOB names_blob = NTLMv2_generate_names_blob(mem_ctx, lp_netbios_name(), lp_workgroup());
+				DATA_BLOB lmv2_response, ntlmv2_response, lmv2_session_key, ntlmv2_session_key;
+				
+				if (!SMBNTLMv2encrypt_hash(user_info_temp,
+							   user_info_in->client.account_name, 
+							   user_info_in->client.domain_name, 
+							   user_info_in->password.hash.nt->hash, &chall_blob,
+							   &names_blob,
+							   &lmv2_response, &ntlmv2_response, 
+							   &lmv2_session_key, &ntlmv2_session_key)) {
+					data_blob_free(&names_blob);
+					return NT_STATUS_NO_MEMORY;
+				}
+				data_blob_free(&names_blob);
+				user_info_temp->password.response.lanman = lmv2_response;
+				user_info_temp->password.response.nt = ntlmv2_response;
+				
+				data_blob_free(&lmv2_session_key);
+				data_blob_free(&ntlmv2_session_key);
+			} else {
+				DATA_BLOB blob = data_blob_talloc(mem_ctx, NULL, 24);
+				SMBOWFencrypt(user_info_in->password.hash.nt->hash, challenge, blob.data);
+
+				user_info_temp->password.response.nt = blob;
+				if (lp_client_lanman_auth() && user_info_in->password.hash.lanman) {
+					DATA_BLOB lm_blob = data_blob_talloc(mem_ctx, NULL, 24);
+					SMBOWFencrypt(user_info_in->password.hash.lanman->hash, challenge, blob.data);
+					user_info_temp->password.response.lanman = lm_blob;
+				} else {
+					/* if not sending the LM password, send the NT password twice */
+					user_info_temp->password.response.lanman = user_info_temp->password.response.nt;
+				}
+			}
+
+			user_info_in = user_info_temp;
+			/* fall through */
+		}
+		case AUTH_PASSWORD_RESPONSE:
+			*user_info_encrypted = user_info_in;
+		}
+		break;
+	case AUTH_PASSWORD_HASH:
+	{	
+		switch (user_info_in->password_state) {
+		case AUTH_PASSWORD_PLAIN:
+		{
+			struct samr_Password lanman;
+			struct samr_Password nt;
+			
+			user_info_temp = talloc(mem_ctx, struct auth_usersupplied_info);
+			if (!user_info_temp) {
+				return NT_STATUS_NO_MEMORY;
+			}
+			talloc_reference(user_info_temp, user_info_in);
+			*user_info_temp = *user_info_in;
+			user_info_temp->mapped_state = to_state;
+			
+			if (E_deshash(user_info_in->password.plaintext, lanman.hash)) {
+				user_info_temp->password.hash.lanman = talloc(user_info_temp,
+									      struct samr_Password);
+				*user_info_temp->password.hash.lanman = lanman;
+			} else {
+				user_info_temp->password.hash.lanman = NULL;
+			}
+			
+			E_md4hash(user_info_in->password.plaintext, nt.hash);
+			user_info_temp->password.hash.nt = talloc(user_info_temp,
+								   struct samr_Password);
+			*user_info_temp->password.hash.nt = nt;
+			
+			user_info_in = user_info_temp;
+			/* fall through */
+		}
+		case AUTH_PASSWORD_HASH:
+			*user_info_encrypted = user_info_in;
+			break;
+		default:
+			return NT_STATUS_INVALID_PARAMETER;
+			break;
+		}
+		break;
+	}
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	return NT_STATUS_OK;
+}
+
+/***************************************************************************
+ Make a server_info struct from the info3 returned by a domain logon 
+***************************************************************************/
+NTSTATUS make_server_info_netlogon_validation(TALLOC_CTX *mem_ctx,
+					      const char *account_name,
+					      uint16_t validation_level,
+					      union netr_Validation *validation,
+					      struct auth_serversupplied_info **_server_info)
+{
+	struct auth_serversupplied_info *server_info;
+	struct netr_SamBaseInfo *base = NULL;
+	int i;
+
+	switch (validation_level) {
+	case 2:
+		if (!validation || !validation->sam2) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam2->base;
+		break;
+	case 3:
+		if (!validation || !validation->sam3) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam3->base;
+		break;
+	case 6:
+		if (!validation || !validation->sam6) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		base = &validation->sam6->base;
+		break;
+	default:
+		return NT_STATUS_INVALID_LEVEL;
+	}
+
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+
+	/*
+	   Here is where we should check the list of
+	   trusted domains, and verify that the SID 
+	   matches.
+	*/
+	server_info->account_sid = dom_sid_add_rid(server_info, base->domain_sid, base->rid);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
+
+
+	server_info->primary_group_sid = dom_sid_add_rid(server_info, base->domain_sid, base->primary_gid);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
+
+	server_info->n_domain_groups = base->groups.count;
+	if (base->groups.count) {
+		server_info->domain_groups = talloc_array(server_info, struct dom_sid*, base->groups.count);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups);
+	} else {
+		server_info->domain_groups = NULL;
+	}
+
+	for (i = 0; i < base->groups.count; i++) {
+		server_info->domain_groups[i] = dom_sid_add_rid(server_info, base->domain_sid, base->groups.rids[i].rid);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups[i]);
+	}
+
+	/* Copy 'other' sids.  We need to do sid filtering here to
+ 	   prevent possible elevation of privileges.  See:
+
+           http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
+         */
+
+	if (validation_level == 3) {
+		struct dom_sid **dgrps = server_info->domain_groups;
+		size_t sidcount = server_info->n_domain_groups + validation->sam3->sidcount;
+		size_t n_dgrps = server_info->n_domain_groups;
+
+		if (validation->sam3->sidcount > 0) {
+			dgrps = talloc_realloc(server_info, dgrps, struct dom_sid*, sidcount);
+			NT_STATUS_HAVE_NO_MEMORY(dgrps);
+
+			for (i = 0; i < validation->sam3->sidcount; i++) {
+				dgrps[n_dgrps + i] = talloc_reference(dgrps, validation->sam3->sids[i].sid);
+			}
+		}
+
+		server_info->n_domain_groups = sidcount;
+		server_info->domain_groups = dgrps;
+
+		/* Where are the 'global' sids?... */
+	}
+
+	if (base->account_name.string) {
+		server_info->account_name = talloc_reference(server_info, base->account_name.string);
+	} else {
+		server_info->account_name = talloc_strdup(server_info, account_name);
+		NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+	}
+
+	server_info->domain_name = talloc_reference(server_info, base->domain.string);
+	server_info->full_name = talloc_reference(server_info, base->full_name.string);
+	server_info->logon_script = talloc_reference(server_info, base->logon_script.string);
+	server_info->profile_path = talloc_reference(server_info, base->profile_path.string);
+	server_info->home_directory = talloc_reference(server_info, base->home_directory.string);
+	server_info->home_drive = talloc_reference(server_info, base->home_drive.string);
+	server_info->logon_server = talloc_reference(server_info, base->logon_server.string);
+	server_info->last_logon = base->last_logon;
+	server_info->last_logoff = base->last_logoff;
+	server_info->acct_expiry = base->acct_expiry;
+	server_info->last_password_change = base->last_password_change;
+	server_info->allow_password_change = base->allow_password_change;
+	server_info->force_password_change = base->force_password_change;
+	server_info->logon_count = base->logon_count;
+	server_info->bad_password_count = base->bad_password_count;
+	server_info->acct_flags = base->acct_flags;
+
+	server_info->authenticated = True;
+
+	/* ensure we are never given NULL session keys */
+
+	if (all_zero(base->key.key, sizeof(base->key.key))) {
+		server_info->user_session_key = data_blob(NULL, 0);
+	} else {
+		server_info->user_session_key = data_blob_talloc(server_info, base->key.key, sizeof(base->key.key));
+		NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
+	}
+
+	if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
+		server_info->lm_session_key = data_blob(NULL, 0);
+	} else {
+		server_info->lm_session_key = data_blob_talloc(server_info, base->LMSessKey.key, sizeof(base->LMSessKey.key));
+		NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
+	}
+
+	*_server_info = server_info;
+	return NT_STATUS_OK;
+}
+
+
+NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx, struct auth_serversupplied_info **_server_info) 
+{
+	struct auth_serversupplied_info *server_info;
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+
+	server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
+
+	/* is this correct? */
+	server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
+
+	server_info->n_domain_groups = 0;
+	server_info->domain_groups = NULL;
+
+	/* annoying, but the Anonymous really does have a session key, 
+	   and it is all zeros! */
+	server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
+
+	server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
+
+	data_blob_clear(&server_info->user_session_key);
+	data_blob_clear(&server_info->lm_session_key);
+
+	server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+
+	server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
+
+	server_info->full_name = talloc_strdup(server_info, "Anonymous Logon");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
+
+	server_info->logon_script = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
+
+	server_info->profile_path = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
+
+	server_info->home_directory = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
+
+	server_info->home_drive = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
+
+	server_info->logon_server = talloc_strdup(server_info, lp_netbios_name());
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
+
+	server_info->last_logon = 0;
+	server_info->last_logoff = 0;
+	server_info->acct_expiry = 0;
+	server_info->last_password_change = 0;
+	server_info->allow_password_change = 0;
+	server_info->force_password_change = 0;
+
+	server_info->logon_count = 0;
+	server_info->bad_password_count = 0;
+
+	server_info->acct_flags = ACB_NORMAL;
+
+	server_info->authenticated = False;
+
+	*_server_info = server_info;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_system_server_info(TALLOC_CTX *mem_ctx, struct auth_serversupplied_info **_server_info) 
+{
+	struct auth_serversupplied_info *server_info;
+	server_info = talloc(mem_ctx, struct auth_serversupplied_info);
+	NT_STATUS_HAVE_NO_MEMORY(server_info);
+
+	server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_SYSTEM);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
+
+	/* is this correct? */
+	server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_ADMINISTRATORS);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
+
+	server_info->n_domain_groups = 0;
+	server_info->domain_groups = NULL;
+
+	/* annoying, but the Anonymous really does have a session key, 
+	   and it is all zeros! */
+	server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
+
+	server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
+
+	data_blob_clear(&server_info->user_session_key);
+	data_blob_clear(&server_info->lm_session_key);
+
+	server_info->account_name = talloc_strdup(server_info, "SYSTEM");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
+
+	server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
+
+	server_info->full_name = talloc_strdup(server_info, "System");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
+
+	server_info->logon_script = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
+
+	server_info->profile_path = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
+
+	server_info->home_directory = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
+
+	server_info->home_drive = talloc_strdup(server_info, "");
+	NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
+
+	server_info->logon_server = talloc_strdup(server_info, lp_netbios_name());
+	NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
+
+	server_info->last_logon = 0;
+	server_info->last_logoff = 0;
+	server_info->acct_expiry = 0;
+	server_info->last_password_change = 0;
+	server_info->allow_password_change = 0;
+	server_info->force_password_change = 0;
+
+	server_info->logon_count = 0;
+	server_info->bad_password_count = 0;
+
+	server_info->acct_flags = ACB_NORMAL;
+
+	server_info->authenticated = True;
+
+	*_server_info = server_info;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx, 
+				    struct auth_serversupplied_info *server_info, 
+				    struct auth_session_info **_session_info) 
+{
+	struct auth_session_info *session_info;
+	NTSTATUS nt_status;
+
+	session_info = talloc(mem_ctx, struct auth_session_info);
+	NT_STATUS_HAVE_NO_MEMORY(session_info);
+
+	session_info->server_info = talloc_reference(session_info, server_info);
+
+	/* unless set otherwise, the session key is the user session
+	 * key from the auth subsystem */ 
+	session_info->session_key = server_info->user_session_key;
+
+	nt_status = security_token_create(session_info,
+					  server_info->account_sid,
+					  server_info->primary_group_sid,
+					  server_info->n_domain_groups,
+					  server_info->domain_groups,
+					  server_info->authenticated,
+					  &session_info->security_token);
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = NULL;
+
+	*_session_info = session_info;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx, 
+				     struct auth_session_info **_session_info) 
+{
+	NTSTATUS nt_status;
+	struct auth_serversupplied_info *server_info = NULL;
+	struct auth_session_info *session_info = NULL;
+	TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
+	
+	nt_status = auth_anonymous_server_info(mem_ctx,
+					       &server_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	/* references the server_info into the session_info */
+	nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info);
+	talloc_free(mem_ctx);
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = cli_credentials_init(session_info);
+	if (!session_info->credentials) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	cli_credentials_set_conf(session_info->credentials);
+	cli_credentials_set_anonymous(session_info->credentials);
+	
+	*_session_info = session_info;
+
+	return NT_STATUS_OK;
+}
+
+struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx) 
+{
+	NTSTATUS nt_status;
+	struct auth_session_info *session_info = NULL;
+	nt_status = auth_anonymous_session_info(mem_ctx, &session_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return NULL;
+	}
+	return session_info;
+}
+
+NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx, 
+				  struct auth_session_info **_session_info) 
+{
+	NTSTATUS nt_status;
+	struct auth_serversupplied_info *server_info = NULL;
+	struct auth_session_info *session_info = NULL;
+	TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
+	
+	nt_status = auth_system_server_info(mem_ctx,
+					    &server_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	/* references the server_info into the session_info */
+	nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info);
+	talloc_free(mem_ctx);
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = cli_credentials_init(session_info);
+	if (!session_info->credentials) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	cli_credentials_set_conf(session_info->credentials);
+
+	if (lp_parm_bool(-1,"system","anonymous", False)) {
+		cli_credentials_set_anonymous(session_info->credentials);
+	} else {
+		cli_credentials_set_machine_account_pending(session_info->credentials);
+	}
+	*_session_info = session_info;
+
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ struct auth_session_info *system_session(TALLOC_CTX *mem_ctx) 
+{
+	NTSTATUS nt_status;
+	struct auth_session_info *session_info = NULL;
+	nt_status = auth_system_session_info(mem_ctx, &session_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return NULL;
+	}
+	return session_info;
+}
+
+/****************************************************************************
+ prints a struct auth_session_info security token to debug output.
+****************************************************************************/
+void auth_session_info_debug(int dbg_lev, 
+			     const struct auth_session_info *session_info)
+{
+	if (!session_info) {
+		DEBUG(dbg_lev, ("Session Info: (NULL)\n"));
+		return;	
+	}
+
+	security_token_debug(dbg_lev, session_info->security_token);
+}
+
+/**
+ * Squash an NT_STATUS in line with security requirements.
+ * In an attempt to avoid giving the whole game away when users
+ * are authenticating, NT replaces both NT_STATUS_NO_SUCH_USER and 
+ * NT_STATUS_WRONG_PASSWORD with NT_STATUS_LOGON_FAILURE in certain situations 
+ * (session setups in particular).
+ *
+ * @param nt_status NTSTATUS input for squashing.
+ * @return the 'squashed' nt_status
+ **/
+NTSTATUS auth_nt_status_squash(NTSTATUS nt_status)
+{
+	if NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) {
+		/* Match WinXP and don't give the game away */
+		return NT_STATUS_LOGON_FAILURE;
+	} else if NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD) {
+		/* Match WinXP and don't give the game away */
+		return NT_STATUS_LOGON_FAILURE;
+	}
+
+	return nt_status;
+}