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, 1118 insertions, 0 deletions

diff --git a/source3/smbd/smb1_sesssetup.c b/source3/smbd/smb1_sesssetup.c
new file mode 100644
index 0000000..6c668ff
--- /dev/null
+++ b/source3/smbd/smb1_sesssetup.c
@@ -0,0 +1,1118 @@
+/*
+   Unix SMB/CIFS implementation.
+   handle SMBsessionsetup
+   Copyright (C) Andrew Tridgell 1998-2001
+   Copyright (C) Andrew Bartlett      2001
+   Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
+   Copyright (C) Luke Howard          2003
+   Copyright (C) Volker Lendecke      2007
+   Copyright (C) Jeremy Allison	      2007
+
+   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/tsocket/tsocket.h"
+#include "lib/util/server_id.h"
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "auth.h"
+#include "messages.h"
+#include "smbprofile.h"
+#include "../libcli/security/security.h"
+#include "auth/gensec/gensec.h"
+#include "../libcli/smb/smb_signing.h"
+#include "lib/util/string_wrappers.h"
+#include "source3/lib/substitute.h"
+
+/****************************************************************************
+ Add the standard 'Samba' signature to the end of the session setup.
+****************************************************************************/
+
+static int push_signature(uint8_t **outbuf)
+{
+	char *lanman;
+	int result, tmp;
+	fstring native_os;
+
+	result = 0;
+
+	fstr_sprintf(native_os, "Windows %d.%d", SAMBA_MAJOR_NBT_ANNOUNCE_VERSION,
+		SAMBA_MINOR_NBT_ANNOUNCE_VERSION);
+
+	tmp = message_push_string(outbuf, native_os, STR_TERMINATE);
+
+	if (tmp == -1) return -1;
+	result += tmp;
+
+	if (asprintf(&lanman, "Samba %s", samba_version_string()) != -1) {
+		tmp = message_push_string(outbuf, lanman, STR_TERMINATE);
+		SAFE_FREE(lanman);
+	}
+	else {
+		tmp = message_push_string(outbuf, "Samba", STR_TERMINATE);
+	}
+
+	if (tmp == -1) return -1;
+	result += tmp;
+
+	tmp = message_push_string(outbuf, lp_workgroup(), STR_TERMINATE);
+
+	if (tmp == -1) return -1;
+	result += tmp;
+
+	return result;
+}
+
+/****************************************************************************
+ Reply to a session setup command.
+ conn POINTER CAN BE NULL HERE !
+****************************************************************************/
+
+static void reply_sesssetup_and_X_spnego(struct smb_request *req)
+{
+	const uint8_t *p;
+	DATA_BLOB in_blob;
+	DATA_BLOB out_blob = data_blob_null;
+	size_t bufrem;
+	char *tmp = NULL;
+	const char *native_os;
+	const char *native_lanman;
+	const char *primary_domain;
+	uint16_t data_blob_len = SVAL(req->vwv+7, 0);
+	enum remote_arch_types ra_type = get_remote_arch();
+	uint64_t vuid = req->vuid;
+	NTSTATUS status = NT_STATUS_OK;
+	struct smbXsrv_connection *xconn = req->xconn;
+	struct smbd_server_connection *sconn = req->sconn;
+	uint16_t action = 0;
+	bool is_authenticated = false;
+	NTTIME now = timeval_to_nttime(&req->request_time);
+	struct smbXsrv_session *session = NULL;
+	uint16_t smb_bufsize = SVAL(req->vwv+2, 0);
+	uint32_t client_caps = IVAL(req->vwv+10, 0);
+	struct smbXsrv_session_auth0 *auth;
+
+	DEBUG(3,("Doing spnego session setup\n"));
+
+	if (!xconn->smb1.sessions.done_sesssetup) {
+		global_client_caps = client_caps;
+
+		if (!(global_client_caps & CAP_STATUS32)) {
+			remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
+		}
+	}
+
+	p = req->buf;
+
+	if (data_blob_len == 0) {
+		/* an invalid request */
+		reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
+		return;
+	}
+
+	bufrem = smbreq_bufrem(req, p);
+	/* pull the spnego blob */
+	in_blob = data_blob_const(p, MIN(bufrem, data_blob_len));
+
+#if 0
+	file_save("negotiate.dat", in_blob.data, in_blob.length);
+#endif
+
+	p = req->buf + in_blob.length;
+
+	p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+				     STR_TERMINATE);
+	native_os = tmp ? tmp : "";
+
+	p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+				     STR_TERMINATE);
+	native_lanman = tmp ? tmp : "";
+
+	p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+				     STR_TERMINATE);
+	primary_domain = tmp ? tmp : "";
+
+	DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
+		native_os, native_lanman, primary_domain));
+
+	if ( ra_type == RA_WIN2K ) {
+		/* Vista sets neither the OS or lanman strings */
+
+		if ( !strlen(native_os) && !strlen(native_lanman) )
+			set_remote_arch(RA_VISTA);
+
+		/* Windows 2003 doesn't set the native lanman string,
+		   but does set primary domain which is a bug I think */
+
+		if ( !strlen(native_lanman) ) {
+			ra_lanman_string( primary_domain );
+		} else {
+			ra_lanman_string( native_lanman );
+		}
+	} else if ( ra_type == RA_VISTA ) {
+		if ( strncmp(native_os, "Mac OS X", 8) == 0 ) {
+			set_remote_arch(RA_OSX);
+		}
+	}
+
+	if (vuid != 0) {
+		status = smb1srv_session_lookup(xconn,
+						vuid, now,
+						&session);
+		if (NT_STATUS_EQUAL(status, NT_STATUS_USER_SESSION_DELETED)) {
+			reply_force_doserror(req, ERRSRV, ERRbaduid);
+			return;
+		}
+		if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
+			status = NT_STATUS_OK;
+		}
+		if (NT_STATUS_IS_OK(status)) {
+			session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+			status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+			TALLOC_FREE(session->pending_auth);
+		}
+		if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+	}
+
+	if (session == NULL) {
+		/* create a new session */
+		status = smbXsrv_session_create(xconn,
+					        now, &session);
+		if (!NT_STATUS_IS_OK(status)) {
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+	}
+
+	status = smbXsrv_session_find_auth(session, xconn, now, &auth);
+	if (!NT_STATUS_IS_OK(status)) {
+		status = smbXsrv_session_create_auth(session, xconn, now,
+						     0, /* flags */
+						     0, /* security */
+						     &auth);
+		if (!NT_STATUS_IS_OK(status)) {
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+	}
+
+	if (auth->gensec == NULL) {
+		status = auth_generic_prepare(session,
+					      xconn->remote_address,
+					      xconn->local_address,
+					      "SMB",
+					      &auth->gensec);
+		if (!NT_STATUS_IS_OK(status)) {
+			TALLOC_FREE(session);
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+
+		gensec_want_feature(auth->gensec, GENSEC_FEATURE_SESSION_KEY);
+		gensec_want_feature(auth->gensec, GENSEC_FEATURE_UNIX_TOKEN);
+		gensec_want_feature(auth->gensec, GENSEC_FEATURE_SMB_TRANSPORT);
+
+		status = gensec_start_mech_by_oid(auth->gensec,
+						  GENSEC_OID_SPNEGO);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("Failed to start SPNEGO handler!\n"));
+			TALLOC_FREE(session);;
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+	}
+
+	become_root();
+	status = gensec_update(auth->gensec,
+			       talloc_tos(),
+			       in_blob, &out_blob);
+	unbecome_root();
+	if (!NT_STATUS_IS_OK(status) &&
+	    !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		TALLOC_FREE(session);
+		reply_nterror(req, nt_status_squash(status));
+		return;
+	}
+
+	if (NT_STATUS_IS_OK(status) && session->global->auth_session_info == NULL) {
+		struct auth_session_info *session_info = NULL;
+
+		status = gensec_session_info(auth->gensec,
+					     session,
+					     &session_info);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(1,("Failed to generate session_info "
+				 "(user and group token) for session setup: %s\n",
+				 nt_errstr(status)));
+			data_blob_free(&out_blob);
+			TALLOC_FREE(session);
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+
+		if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
+			action |= SMB_SETUP_GUEST;
+		}
+
+		session->global->signing_algo = SMB2_SIGNING_MD5_SMB1;
+		session->global->encryption_cipher = 0;
+		session->global->channels[0].signing_algo =
+				session->global->signing_algo;
+		session->global->channels[0].encryption_cipher =
+				session->global->encryption_cipher;
+
+		if (session_info->session_key.length > 0) {
+			struct smbXsrv_session *x = session;
+
+			status = smb2_signing_key_sign_create(x->global,
+						x->global->signing_algo,
+						&session_info->session_key,
+						NULL, /* no derivation */
+						&x->global->signing_key);
+			if (!NT_STATUS_IS_OK(status)) {
+				data_blob_free(&out_blob);
+				TALLOC_FREE(session);
+				reply_nterror(req, status);
+				return;
+			}
+			x->global->signing_key_blob = x->global->signing_key->blob;
+
+			/*
+			 * clear the session key
+			 * the first tcon will add setup the application key
+			 */
+			data_blob_clear_free(&session_info->session_key);
+		}
+
+		sconn->num_users++;
+
+		if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+			is_authenticated = true;
+			session->homes_snum =
+				register_homes_share(session_info->unix_info->unix_name);
+		}
+
+		if (smb1_srv_is_signing_negotiated(xconn) &&
+		    is_authenticated &&
+		    smb2_signing_key_valid(session->global->signing_key))
+		{
+			/*
+			 * Try and turn on server signing on the first non-guest
+			 * sessionsetup.
+			 */
+			smb1_srv_set_signing(xconn,
+				session->global->signing_key->blob,
+				data_blob_null);
+		}
+
+		set_current_user_info(session_info->unix_info->sanitized_username,
+				      session_info->unix_info->unix_name,
+				      session_info->info->domain_name);
+
+		session->status = NT_STATUS_OK;
+		session->global->auth_session_info = talloc_move(session->global,
+								 &session_info);
+		session->global->auth_session_info_seqnum += 1;
+		session->global->channels[0].auth_session_info_seqnum =
+			session->global->auth_session_info_seqnum;
+		session->global->auth_time = now;
+		if (client_caps & CAP_DYNAMIC_REAUTH) {
+			session->global->expiration_time =
+				gensec_expire_time(auth->gensec);
+		} else {
+			session->global->expiration_time =
+				GENSEC_EXPIRE_TIME_INFINITY;
+		}
+
+		if (!session_claim(session)) {
+			DEBUG(1, ("smb1: Failed to claim session for vuid=%llu\n",
+				  (unsigned long long)session->global->session_wire_id));
+			data_blob_free(&out_blob);
+			TALLOC_FREE(session);
+			reply_nterror(req, NT_STATUS_LOGON_FAILURE);
+			return;
+		}
+
+		status = smbXsrv_session_update(session);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("smb1: Failed to update session for vuid=%llu - %s\n",
+				  (unsigned long long)session->global->session_wire_id,
+				  nt_errstr(status)));
+			data_blob_free(&out_blob);
+			TALLOC_FREE(session);
+			reply_nterror(req, NT_STATUS_LOGON_FAILURE);
+			return;
+		}
+
+		if (!xconn->smb1.sessions.done_sesssetup) {
+			if (smb_bufsize < SMB_BUFFER_SIZE_MIN) {
+				reply_force_doserror(req, ERRSRV, ERRerror);
+				return;
+			}
+			xconn->smb1.sessions.max_send = smb_bufsize;
+			xconn->smb1.sessions.done_sesssetup = true;
+		}
+
+		/* current_user_info is changed on new vuid */
+		reload_services(sconn, conn_snum_used, true);
+	} else if (NT_STATUS_IS_OK(status)) {
+		struct auth_session_info *session_info = NULL;
+
+		status = gensec_session_info(auth->gensec,
+					     session,
+					     &session_info);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(1,("Failed to generate session_info "
+				 "(user and group token) for session setup: %s\n",
+				 nt_errstr(status)));
+			data_blob_free(&out_blob);
+			TALLOC_FREE(session);
+			reply_nterror(req, nt_status_squash(status));
+			return;
+		}
+
+		if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
+			action |= SMB_SETUP_GUEST;
+		}
+
+		/*
+		 * Keep the application key
+		 */
+		data_blob_clear_free(&session_info->session_key);
+		session_info->session_key =
+			session->global->auth_session_info->session_key;
+		talloc_steal(session_info, session_info->session_key.data);
+		TALLOC_FREE(session->global->auth_session_info);
+
+		if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+			session->homes_snum =
+				register_homes_share(session_info->unix_info->unix_name);
+		}
+
+		set_current_user_info(session_info->unix_info->sanitized_username,
+				      session_info->unix_info->unix_name,
+				      session_info->info->domain_name);
+
+		session->status = NT_STATUS_OK;
+		session->global->auth_session_info = talloc_move(session->global,
+								 &session_info);
+		session->global->auth_session_info_seqnum += 1;
+		session->global->channels[0].auth_session_info_seqnum =
+			session->global->auth_session_info_seqnum;
+		session->global->auth_time = now;
+		if (client_caps & CAP_DYNAMIC_REAUTH) {
+			session->global->expiration_time =
+				gensec_expire_time(auth->gensec);
+		} else {
+			session->global->expiration_time =
+				GENSEC_EXPIRE_TIME_INFINITY;
+		}
+
+		status = smbXsrv_session_update(session);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(0, ("smb1: Failed to update session for vuid=%llu - %s\n",
+				  (unsigned long long)session->global->session_wire_id,
+				  nt_errstr(status)));
+			data_blob_free(&out_blob);
+			TALLOC_FREE(session);
+			reply_nterror(req, NT_STATUS_LOGON_FAILURE);
+			return;
+		}
+
+		conn_clear_vuid_caches(sconn, session->global->session_wire_id);
+
+		/* current_user_info is changed on new vuid */
+		reload_services(sconn, conn_snum_used, true);
+	}
+
+	vuid = session->global->session_wire_id;
+
+	reply_smb1_outbuf(req, 4, 0);
+
+	SSVAL(req->outbuf, smb_uid, vuid);
+	SIVAL(req->outbuf, smb_rcls, NT_STATUS_V(status));
+	SSVAL(req->outbuf, smb_vwv0, 0xFF); /* no chaining possible */
+	SSVAL(req->outbuf, smb_vwv2, action);
+	SSVAL(req->outbuf, smb_vwv3, out_blob.length);
+
+	if (message_push_blob(&req->outbuf, out_blob) == -1) {
+		data_blob_free(&out_blob);
+		TALLOC_FREE(session);
+		reply_nterror(req, NT_STATUS_NO_MEMORY);
+		return;
+	}
+	data_blob_free(&out_blob);
+
+	if (push_signature(&req->outbuf) == -1) {
+		TALLOC_FREE(session);
+		reply_nterror(req, NT_STATUS_NO_MEMORY);
+		return;
+	}
+}
+
+/****************************************************************************
+ On new VC == 0, shutdown *all* old connections and users.
+ It seems that only NT4.x does this. At W2K and above (XP etc.).
+ a new session setup with VC==0 is ignored.
+****************************************************************************/
+
+struct shutdown_state {
+	const char *ip;
+	size_t ip_length;
+	struct messaging_context *msg_ctx;
+};
+
+static int shutdown_other_smbds(struct smbXsrv_session_global0 *session,
+				void *private_data)
+{
+	struct shutdown_state *state = (struct shutdown_state *)private_data;
+	struct server_id self_pid = messaging_server_id(state->msg_ctx);
+	struct server_id pid = session->channels[0].server_id;
+	const char *addr = session->channels[0].remote_address;
+	const char *port_colon;
+	size_t addr_len;
+	struct server_id_buf tmp;
+
+	DEBUG(10, ("shutdown_other_smbds: %s, %s\n",
+		   server_id_str_buf(pid, &tmp), addr));
+
+	if (!process_exists(pid)) {
+		DEBUG(10, ("process does not exist\n"));
+		return 0;
+	}
+
+	if (server_id_equal(&pid, &self_pid)) {
+		DEBUG(10, ("It's me\n"));
+		return 0;
+	}
+
+	port_colon = strrchr(addr, ':');
+	if (port_colon == NULL) {
+		DBG_DEBUG("addr %s in contains no port\n", addr);
+		return 0;
+	}
+	addr_len = port_colon - addr;
+
+	if ((addr_len != state->ip_length) ||
+	    (strncmp(addr, state->ip, state->ip_length) != 0)) {
+		DEBUG(10, ("%s (%zu) does not match %s (%zu)\n",
+			   state->ip, state->ip_length, addr, addr_len));
+		return 0;
+	}
+
+	DEBUG(1, ("shutdown_other_smbds: shutting down pid %u "
+		  "(IP %s)\n", (unsigned int)procid_to_pid(&pid),
+		  state->ip));
+
+	messaging_send(state->msg_ctx, pid, MSG_SHUTDOWN,
+		       &data_blob_null);
+	return 0;
+}
+
+static void setup_new_vc_session(struct smbd_server_connection *sconn)
+{
+	DEBUG(2,("setup_new_vc_session: New VC == 0, if NT4.x "
+		"compatible we would close all old resources.\n"));
+
+	if (lp_reset_on_zero_vc()) {
+		char *addr;
+		const char *port_colon;
+		struct shutdown_state state;
+
+		addr = tsocket_address_string(
+			sconn->remote_address, talloc_tos());
+		if (addr == NULL) {
+			return;
+		}
+		state.ip = addr;
+
+		port_colon = strrchr(addr, ':');
+		if (port_colon == NULL) {
+			return;
+		}
+		state.ip_length = port_colon - addr;
+		state.msg_ctx = sconn->msg_ctx;
+		smbXsrv_session_global_traverse(shutdown_other_smbds, &state);
+		TALLOC_FREE(addr);
+	}
+}
+
+/****************************************************************************
+ Reply to a session setup command.
+****************************************************************************/
+
+struct reply_sesssetup_and_X_state {
+	struct smb_request *req;
+	struct auth4_context *auth_context;
+	struct auth_usersupplied_info *user_info;
+	const char *user;
+	const char *domain;
+	DATA_BLOB lm_resp;
+	DATA_BLOB nt_resp;
+	DATA_BLOB plaintext_password;
+};
+
+static int reply_sesssetup_and_X_state_destructor(
+		struct reply_sesssetup_and_X_state *state)
+{
+	data_blob_clear_free(&state->nt_resp);
+	data_blob_clear_free(&state->lm_resp);
+	data_blob_clear_free(&state->plaintext_password);
+	return 0;
+}
+
+void reply_sesssetup_and_X(struct smb_request *req)
+{
+	struct reply_sesssetup_and_X_state *state = NULL;
+	uint64_t sess_vuid;
+	uint16_t smb_bufsize;
+	char *tmp = NULL;
+	fstring sub_user; /* Sanitised username for substitution */
+	const char *native_os;
+	const char *native_lanman;
+	const char *primary_domain;
+	struct auth_session_info *session_info = NULL;
+	uint16_t smb_flag2 = req->flags2;
+	uint16_t action = 0;
+	bool is_authenticated = false;
+	NTTIME now = timeval_to_nttime(&req->request_time);
+	struct smbXsrv_session *session = NULL;
+	NTSTATUS nt_status;
+	struct smbXsrv_connection *xconn = req->xconn;
+	struct smbd_server_connection *sconn = req->sconn;
+	bool doencrypt = xconn->smb1.negprot.encrypted_passwords;
+	bool signing_allowed = false;
+	bool signing_mandatory = smb1_signing_is_mandatory(
+		xconn->smb1.signing_state);
+
+	START_PROFILE(SMBsesssetupX);
+
+	DEBUG(3,("wct=%d flg2=0x%x\n", req->wct, req->flags2));
+
+	state = talloc_zero(req, struct reply_sesssetup_and_X_state);
+	if (state == NULL) {
+		reply_nterror(req, NT_STATUS_NO_MEMORY);
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+	state->req = req;
+	talloc_set_destructor(state, reply_sesssetup_and_X_state_destructor);
+
+	if (req->flags2 & FLAGS2_SMB_SECURITY_SIGNATURES) {
+		signing_allowed = true;
+	}
+	if (req->flags2 & FLAGS2_SMB_SECURITY_SIGNATURES_REQUIRED) {
+		signing_mandatory = true;
+	}
+
+	/*
+	 * We can call smb1_srv_set_signing_negotiated() each time.
+	 * It finds out when it needs to turn into a noop
+	 * itself.
+	 */
+	smb1_srv_set_signing_negotiated(xconn,
+				   signing_allowed,
+				   signing_mandatory);
+
+	/* a SPNEGO session setup has 12 command words, whereas a normal
+	   NT1 session setup has 13. See the cifs spec. */
+	if (req->wct == 12 &&
+	    (req->flags2 & FLAGS2_EXTENDED_SECURITY)) {
+
+		if (!xconn->smb1.negprot.spnego) {
+			DEBUG(0,("reply_sesssetup_and_X:  Rejecting attempt "
+				 "at SPNEGO session setup when it was not "
+				 "negotiated.\n"));
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_LOGON_FAILURE));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+
+		if (SVAL(req->vwv+4, 0) == 0) {
+			setup_new_vc_session(req->sconn);
+		}
+
+		reply_sesssetup_and_X_spnego(req);
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	smb_bufsize = SVAL(req->vwv+2, 0);
+
+	if (xconn->protocol < PROTOCOL_NT1) {
+		uint16_t passlen1 = SVAL(req->vwv+7, 0);
+
+		/* Never do NT status codes with protocols before NT1 as we
+		 * don't get client caps. */
+		remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
+
+		if ((passlen1 > MAX_PASS_LEN) || (passlen1 > req->buflen)) {
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_INVALID_PARAMETER));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+
+		if (doencrypt) {
+			state->lm_resp = data_blob_talloc(state,
+							  req->buf,
+							  passlen1);
+		} else {
+			state->plaintext_password = data_blob_talloc(state,
+								req->buf,
+								passlen1+1);
+			/* Ensure null termination */
+			state->plaintext_password.data[passlen1] = 0;
+		}
+
+		srvstr_pull_req_talloc(state, req, &tmp,
+				       req->buf + passlen1, STR_TERMINATE);
+		state->user = tmp ? tmp : "";
+
+		state->domain = "";
+
+	} else {
+		uint16_t passlen1 = SVAL(req->vwv+7, 0);
+		uint16_t passlen2 = SVAL(req->vwv+8, 0);
+		enum remote_arch_types ra_type = get_remote_arch();
+		const uint8_t *p = req->buf;
+		const uint8_t *save_p = req->buf;
+		uint16_t byte_count;
+
+		if (!xconn->smb1.sessions.done_sesssetup) {
+			global_client_caps = IVAL(req->vwv+11, 0);
+
+			if (!(global_client_caps & CAP_STATUS32)) {
+				remove_from_common_flags2(
+						FLAGS2_32_BIT_ERROR_CODES);
+			}
+
+			/* client_caps is used as final determination if
+			 * client is NT or Win95. This is needed to return
+			 * the correct error codes in some circumstances.
+			*/
+
+			if(ra_type == RA_WINNT || ra_type == RA_WIN2K ||
+					ra_type == RA_WIN95) {
+				if(!(global_client_caps & (CAP_NT_SMBS|
+							CAP_STATUS32))) {
+					set_remote_arch( RA_WIN95);
+				}
+			}
+		}
+
+		if (!doencrypt) {
+			/* both Win95 and WinNT stuff up the password
+			 * lengths for non-encrypting systems. Uggh.
+
+			   if passlen1==24 its a win95 system, and its setting
+			   the password length incorrectly. Luckily it still
+			   works with the default code because Win95 will null
+			   terminate the password anyway
+
+			   if passlen1>0 and passlen2>0 then maybe its a NT box
+			   and its setting passlen2 to some random value which
+			   really stuffs things up. we need to fix that one.  */
+
+			if (passlen1 > 0 && passlen2 > 0 && passlen2 != 24 &&
+					passlen2 != 1) {
+				passlen2 = 0;
+			}
+		}
+
+		/* check for nasty tricks */
+		if (passlen1 > MAX_PASS_LEN
+		    || passlen1 > smbreq_bufrem(req, p)) {
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_INVALID_PARAMETER));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+
+		if (passlen2 > MAX_PASS_LEN
+		    || passlen2 > smbreq_bufrem(req, p+passlen1)) {
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_INVALID_PARAMETER));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+
+		/* Save the lanman2 password and the NT md4 password. */
+
+		if ((doencrypt) && (passlen1 != 0) && (passlen1 != 24)) {
+			doencrypt = False;
+		}
+
+		if (doencrypt) {
+			state->lm_resp = data_blob_talloc(state, p, passlen1);
+			state->nt_resp = data_blob_talloc(state, p+passlen1, passlen2);
+		} else {
+			char *pass = NULL;
+			bool unic= smb_flag2 & FLAGS2_UNICODE_STRINGS;
+
+			if (unic && (passlen2 == 0) && passlen1) {
+				/* Only a ascii plaintext password was sent. */
+				(void)srvstr_pull_talloc(state,
+							req->inbuf,
+							req->flags2,
+							&pass,
+							req->buf,
+							passlen1,
+							STR_TERMINATE|STR_ASCII);
+			} else {
+				(void)srvstr_pull_talloc(state,
+							req->inbuf,
+							req->flags2,
+							&pass,
+							req->buf,
+							unic ? passlen2 : passlen1,
+							STR_TERMINATE);
+			}
+			if (!pass) {
+				reply_nterror(req, nt_status_squash(
+					      NT_STATUS_INVALID_PARAMETER));
+				END_PROFILE(SMBsesssetupX);
+				return;
+			}
+			state->plaintext_password = data_blob_talloc(state,
+								pass,
+								strlen(pass)+1);
+		}
+
+		p += passlen1 + passlen2;
+
+		p += srvstr_pull_req_talloc(state, req, &tmp, p,
+					    STR_TERMINATE);
+		state->user = tmp ? tmp : "";
+
+		p += srvstr_pull_req_talloc(state, req, &tmp, p,
+					    STR_TERMINATE);
+		state->domain = tmp ? tmp : "";
+
+		p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+					    STR_TERMINATE);
+		native_os = tmp ? tmp : "";
+
+		p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+					    STR_TERMINATE);
+		native_lanman = tmp ? tmp : "";
+
+		/* not documented or decoded by Ethereal but there is one more
+		 * string in the extra bytes which is the same as the
+		 * PrimaryDomain when using extended security.  Windows NT 4
+		 * and 2003 use this string to store the native lanman string.
+		 * Windows 9x does not include a string here at all so we have
+		 * to check if we have any extra bytes left */
+
+		byte_count = SVAL(req->vwv+13, 0);
+		if ( PTR_DIFF(p, save_p) < byte_count) {
+			p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
+						    STR_TERMINATE);
+			primary_domain = tmp ? tmp : "";
+		} else {
+			primary_domain = talloc_strdup(talloc_tos(), "null");
+		}
+
+		DEBUG(3,("Domain=[%s]  NativeOS=[%s] NativeLanMan=[%s] "
+			"PrimaryDomain=[%s]\n",
+			state->domain, native_os, native_lanman, primary_domain));
+
+		if ( ra_type == RA_WIN2K ) {
+			if ( strlen(native_lanman) == 0 )
+				ra_lanman_string( primary_domain );
+			else
+				ra_lanman_string( native_lanman );
+		}
+
+	}
+
+	if (SVAL(req->vwv+4, 0) == 0) {
+		setup_new_vc_session(req->sconn);
+	}
+
+	DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n",
+		 state->domain, state->user, get_remote_machine_name()));
+
+	if (*state->user) {
+		if (xconn->smb1.negprot.spnego) {
+
+			/* This has to be here, because this is a perfectly
+			 * valid behaviour for guest logons :-( */
+
+			DEBUG(0,("reply_sesssetup_and_X:  Rejecting attempt "
+				"at 'normal' session setup after "
+				"negotiating spnego.\n"));
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_LOGON_FAILURE));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		fstrcpy(sub_user, state->user);
+	} else {
+		fstrcpy(sub_user, "");
+	}
+
+	if (!*state->user) {
+		DEBUG(3,("Got anonymous request\n"));
+
+		nt_status = make_auth4_context(state, &state->auth_context);
+		if (NT_STATUS_IS_OK(nt_status)) {
+			uint8_t chal[8];
+
+			state->auth_context->get_ntlm_challenge(
+					state->auth_context, chal);
+
+			if (!make_user_info_guest(state,
+						  sconn->remote_address,
+						  sconn->local_address,
+						  "SMB", &state->user_info)) {
+				nt_status =  NT_STATUS_NO_MEMORY;
+			}
+
+			if (NT_STATUS_IS_OK(nt_status)) {
+				state->user_info->auth_description = "guest";
+			}
+		}
+	} else if (doencrypt) {
+		state->auth_context = xconn->smb1.negprot.auth_context;
+		if (state->auth_context == NULL) {
+			DEBUG(0, ("reply_sesssetup_and_X:  Attempted encrypted "
+				"session setup without negprot denied!\n"));
+			reply_nterror(req, nt_status_squash(
+					      NT_STATUS_LOGON_FAILURE));
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		nt_status = make_user_info_for_reply_enc(state,
+							 &state->user_info,
+							 state->user,
+							 state->domain,
+							 sconn->remote_address,
+							 sconn->local_address,
+							 "SMB",
+							 state->lm_resp,
+							 state->nt_resp);
+
+		if (NT_STATUS_IS_OK(nt_status)) {
+			state->user_info->auth_description = "bare-NTLM";
+		}
+	} else {
+		nt_status = make_auth4_context(state, &state->auth_context);
+		if (NT_STATUS_IS_OK(nt_status)) {
+			uint8_t chal[8];
+
+			state->auth_context->get_ntlm_challenge(
+					state->auth_context, chal);
+
+			if (!make_user_info_for_reply(state,
+						      &state->user_info,
+						      state->user,
+						      state->domain,
+						      sconn->remote_address,
+						      sconn->local_address,
+						      "SMB",
+						      chal,
+						      state->plaintext_password)) {
+				nt_status = NT_STATUS_NO_MEMORY;
+			}
+
+			if (NT_STATUS_IS_OK(nt_status)) {
+				state->user_info->auth_description = "plaintext";
+			}
+		}
+	}
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		reply_nterror(req, nt_status_squash(nt_status));
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	nt_status = auth_check_password_session_info(state->auth_context,
+						     req, state->user_info,
+						     &session_info);
+	TALLOC_FREE(state->user_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		reply_nterror(req, nt_status_squash(nt_status));
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	/* it's ok - setup a reply */
+	reply_smb1_outbuf(req, 3, 0);
+	SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
+	SSVAL(req->outbuf, smb_vwv1, 0);    /* no andx offset */
+
+	if (xconn->protocol >= PROTOCOL_NT1) {
+		push_signature(&req->outbuf);
+		/* perhaps grab OS version here?? */
+	}
+
+	if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
+		action |= SMB_SETUP_GUEST;
+	}
+
+	/* register the name and uid as being validated, so further connections
+	   to a uid can get through without a password, on the same VC */
+
+	nt_status = smbXsrv_session_create(xconn,
+					   now, &session);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		reply_nterror(req, nt_status_squash(nt_status));
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	session->global->signing_algo = SMB2_SIGNING_MD5_SMB1;
+	session->global->encryption_cipher = 0;
+	session->global->channels[0].signing_algo =
+			session->global->signing_algo;
+	session->global->channels[0].encryption_cipher =
+			session->global->encryption_cipher;
+
+	if (session_info->session_key.length > 0) {
+		struct smbXsrv_session *x = session;
+		uint8_t session_key[16];
+		NTSTATUS status;
+
+		status = smb2_signing_key_sign_create(x->global,
+					x->global->signing_algo,
+					&session_info->session_key,
+					NULL, /* no derivation */
+					&x->global->signing_key);
+		if (!NT_STATUS_IS_OK(status)) {
+			TALLOC_FREE(session);
+			reply_nterror(req, status);
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		x->global->signing_key_blob = x->global->signing_key->blob;
+
+		/*
+		 * The application key is truncated/padded to 16 bytes
+		 */
+		ZERO_STRUCT(session_key);
+		memcpy(session_key, session->global->signing_key_blob.data,
+		       MIN(session->global->signing_key_blob.length,
+			   sizeof(session_key)));
+		session->global->application_key_blob =
+			data_blob_talloc(session->global,
+					 session_key,
+					 sizeof(session_key));
+		ZERO_STRUCT(session_key);
+		if (session->global->application_key_blob.data == NULL) {
+			TALLOC_FREE(session);
+			reply_nterror(req, NT_STATUS_NO_MEMORY);
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		talloc_keep_secret(session->global->application_key_blob.data);
+
+		/*
+		 * Place the application key into the session_info
+		 */
+		data_blob_clear_free(&session_info->session_key);
+		session_info->session_key = data_blob_dup_talloc(session_info,
+						session->global->application_key_blob);
+		if (session_info->session_key.data == NULL) {
+			TALLOC_FREE(session);
+			reply_nterror(req, NT_STATUS_NO_MEMORY);
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		talloc_keep_secret(session_info->session_key.data);
+	}
+
+	sconn->num_users++;
+
+	if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+		is_authenticated = true;
+		session->homes_snum =
+			register_homes_share(session_info->unix_info->unix_name);
+	}
+
+	if (smb1_srv_is_signing_negotiated(xconn) &&
+	    is_authenticated &&
+	    smb2_signing_key_valid(session->global->signing_key))
+	{
+		/*
+		 * Try and turn on server signing on the first non-guest
+		 * sessionsetup.
+		 */
+		smb1_srv_set_signing(xconn,
+			session->global->signing_key->blob,
+			state->nt_resp.data ? state->nt_resp : state->lm_resp);
+	}
+
+	set_current_user_info(session_info->unix_info->sanitized_username,
+			      session_info->unix_info->unix_name,
+			      session_info->info->domain_name);
+
+	session->status = NT_STATUS_OK;
+	session->global->auth_session_info = talloc_move(session->global,
+							 &session_info);
+	session->global->auth_session_info_seqnum += 1;
+	session->global->channels[0].auth_session_info_seqnum =
+		session->global->auth_session_info_seqnum;
+	session->global->auth_time = now;
+	session->global->expiration_time = GENSEC_EXPIRE_TIME_INFINITY;
+
+	nt_status = smbXsrv_session_update(session);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(0, ("smb1: Failed to update session for vuid=%llu - %s\n",
+			  (unsigned long long)session->global->session_wire_id,
+			  nt_errstr(nt_status)));
+		TALLOC_FREE(session);
+		reply_nterror(req, nt_status_squash(nt_status));
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	if (!session_claim(session)) {
+		DEBUG(1, ("smb1: Failed to claim session for vuid=%llu\n",
+			  (unsigned long long)session->global->session_wire_id));
+		TALLOC_FREE(session);
+		reply_nterror(req, NT_STATUS_LOGON_FAILURE);
+		END_PROFILE(SMBsesssetupX);
+		return;
+	}
+
+	/* current_user_info is changed on new vuid */
+	reload_services(sconn, conn_snum_used, true);
+
+	sess_vuid = session->global->session_wire_id;
+
+	SSVAL(req->outbuf,smb_vwv2,action);
+	SSVAL(req->outbuf,smb_uid,sess_vuid);
+	SSVAL(discard_const_p(char, req->inbuf),smb_uid,sess_vuid);
+	req->vuid = sess_vuid;
+
+	if (!xconn->smb1.sessions.done_sesssetup) {
+		if (smb_bufsize < SMB_BUFFER_SIZE_MIN) {
+			reply_force_doserror(req, ERRSRV, ERRerror);
+			END_PROFILE(SMBsesssetupX);
+			return;
+		}
+		xconn->smb1.sessions.max_send = smb_bufsize;
+		xconn->smb1.sessions.done_sesssetup = true;
+	}
+
+	TALLOC_FREE(state);
+	END_PROFILE(SMBsesssetupX);
+}