r11789: - add the start of a SMB2 server

- it does Negprot and SessionSetup yet
  the rest returns NT_STATUS_NOT_IMPLEMENTED
- it's off by default, enable with:
  smbsrv:enable smb2 = yes
- negotition in the SMB Negprot isn't supported yet
- it's only tested with smbtorture SMB2-CONNECT
  not with vista as client

metze
(This used to be commit 08b31d5f618d2e416cb9812ad3a49754cd7212b8)

9 files changed, 814 insertions, 1 deletions

diff --git a/source4/smb_server/config.mk b/source4/smb_server/config.mk
index 1dd2632890..192692df5b 100644
--- a/source4/smb_server/config.mk
+++ b/source4/smb_server/config.mk
@@ -10,8 +10,11 @@ ADD_OBJ_FILES = \
 		session.o \
 		management.o
 REQUIRED_SUBSYSTEMS = \
-		LIBPACKET SMB_PROTOCOL
+		LIBPACKET \
+		SMB_PROTOCOL \
+		SMB2_PROTOCOL
 # End SUBSYSTEM SMB
 #######################
 
 include smb/config.mk
+include smb2/config.mk
diff --git a/source4/smb_server/smb2/config.mk b/source4/smb_server/smb2/config.mk
new file mode 100644
index 0000000000..105b646e31
--- /dev/null
+++ b/source4/smb_server/smb2/config.mk
@@ -0,0 +1,14 @@
+#######################
+# Start SUBSYSTEM SMB2_PROTOCOL
+[SUBSYSTEM::SMB2_PROTOCOL]
+INIT_OBJ_FILES = \
+		receive.o
+ADD_OBJ_FILES = \
+		negprot.o \
+		sesssetup.o \
+		tcon.o \
+		fileio.o
+REQUIRED_SUBSYSTEMS = \
+		NTVFS LIBPACKET LIBCLI_SMB2
+# End SUBSYSTEM SMB2_PROTOCOL
+#######################
diff --git a/source4/smb_server/smb2/fileio.c b/source4/smb_server/smb2/fileio.c
new file mode 100644
index 0000000000..63b02de2c6
--- /dev/null
+++ b/source4/smb_server/smb2/fileio.c
@@ -0,0 +1,74 @@
+/* 
+   Unix SMB2 implementation.
+   
+   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 "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+#include "smb_server/smb2/smb2_server.h"
+
+void smb2srv_create_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_close_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_read_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_write_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_cancel_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_find_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_notify_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_getinfo_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_setinfo_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_break_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
diff --git a/source4/smb_server/smb2/negprot.c b/source4/smb_server/smb2/negprot.c
new file mode 100644
index 0000000000..630f38b159
--- /dev/null
+++ b/source4/smb_server/smb2/negprot.c
@@ -0,0 +1,177 @@
+/* 
+   Unix SMB2 implementation.
+   
+   Copyright (C) Andrew Bartlett	2001-2005
+   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/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+#include "smb_server/smb_server.h"
+#include "smb_server/smb2/smb2_server.h"
+#include "smbd/service_stream.h"
+
+static NTSTATUS smb2srv_negprot_secblob(struct smb2srv_request *req, DATA_BLOB *_blob)
+{
+	struct gensec_security *gensec_security;
+	DATA_BLOB null_data_blob = data_blob(NULL, 0);
+	DATA_BLOB blob;
+	NTSTATUS nt_status;
+	struct cli_credentials *server_credentials;
+
+	nt_status = gensec_server_start(req, &gensec_security,
+					req->smb_conn->connection->event.ctx);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(0, ("Failed to start GENSEC: %s\n", nt_errstr(nt_status)));
+		smbsrv_terminate_connection(req->smb_conn, "Failed to start GENSEC\n");
+		return nt_status;
+	}
+
+	server_credentials = cli_credentials_init(req);
+	if (!server_credentials) {
+		smbsrv_terminate_connection(req->smb_conn, "Failed to init server credentials\n");
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	cli_credentials_set_conf(server_credentials);
+	nt_status = cli_credentials_set_machine_account(server_credentials);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(nt_status)));
+		talloc_free(server_credentials);
+		server_credentials = NULL;
+	}
+
+	req->smb_conn->negotiate.server_credentials = talloc_steal(req->smb_conn, server_credentials);
+
+	gensec_set_target_service(gensec_security, "cifs");
+
+	gensec_set_credentials(gensec_security, server_credentials);
+
+	nt_status = gensec_start_mech_by_oid(gensec_security, GENSEC_OID_SPNEGO);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(0, ("Failed to start SPNEGO: %s\n", nt_errstr(nt_status)));
+		smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO\n");
+		return nt_status;
+	}
+
+	nt_status = gensec_update(gensec_security, req, null_data_blob, &blob);
+	if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		DEBUG(0, ("Failed to get SPNEGO to give us the first token: %s\n", nt_errstr(nt_status)));
+		smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO - no first token\n");
+		return nt_status;
+	}
+
+	*_blob = blob;
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS smb2srv_negprot_backend(struct smb2srv_request *req, struct smb2_negprot *io)
+{
+	NTSTATUS status;
+	struct timeval current_time;
+	struct timeval boot_time;
+
+	current_time = timeval_current(); /* TODO: handle timezone?! */
+	boot_time = timeval_current(); /* TODO: fix me */
+
+	io->out._pad		= 0;
+	io->out.unknown2	= 0x06;
+	ZERO_STRUCT(io->out.sessid);
+	io->out.unknown3	= 0x0d;
+	io->out.unknown4	= 0x00;
+	io->out.unknown5	= 0x01;
+	io->out.unknown6	= 0x01;
+	io->out.unknown7	= 0x01;
+	io->out.current_time	= timeval_to_nttime(&current_time);
+	io->out.boot_time	= timeval_to_nttime(&boot_time);
+	status = smb2srv_negprot_secblob(req, &io->out.secblob);
+	NT_STATUS_NOT_OK_RETURN(status);
+	io->out.unknown9	= 0x204d4c20;
+
+	return NT_STATUS_OK;
+}
+
+static void smb2srv_negprot_send(struct smb2srv_request *req, struct smb2_negprot *io)
+{
+	NTSTATUS status;
+
+	if (NT_STATUS_IS_ERR(req->status)) {
+		smb2srv_send_error(req, req->status); /* TODO: is this correct? */
+		return;
+	}
+
+	status = smb2srv_setup_reply(req, 0x40, io->out.secblob.length);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status));
+
+	SSVAL(req->out.body, 0x02, io->out._pad);
+	SIVAL(req->out.body, 0x04, io->out.unknown2);
+	memcpy(req->out.body+0x08, io->out.sessid, 16);
+	SIVAL(req->out.body, 0x18, io->out.unknown3);
+	SSVAL(req->out.body, 0x1C, io->out.unknown4);
+	SIVAL(req->out.body, 0x1E, io->out.unknown5);
+	SIVAL(req->out.body, 0x22, io->out.unknown6);
+	SSVAL(req->out.body, 0x26, io->out.unknown7);
+	push_nttime(req->out.body, 0x28, io->out.current_time);
+	push_nttime(req->out.body, 0x30, io->out.boot_time);
+	status = smb2_push_o16s16_blob(&req->out, 0x38, io->out.secblob);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	SIVAL(req->out.body, 0x3C, io->out.unknown9);
+
+	smb2srv_send_reply(req);
+}
+
+void smb2srv_negprot_recv(struct smb2srv_request *req)
+{
+	struct smb2_negprot *io;
+
+	if (req->in.body_size < 0x26) {
+		smb2srv_send_error(req,  NT_STATUS_FOOBAR);
+		return;
+	}
+
+	io = talloc(req, struct smb2_negprot);
+	if (!io) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(NT_STATUS_NO_MEMORY));
+		talloc_free(req);
+		return;
+	}
+
+	io->in.unknown1	= SVAL(req->in.body, 0x02);
+	memcpy(io->in.unknown2, req->in.body + 0x04, 0x20);
+	io->in.unknown3 = SVAL(req->in.body, 0x24);
+
+	req->status = smb2srv_negprot_backend(req, io);
+
+	if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) {
+		talloc_free(req);
+		return;
+	}
+	smb2srv_negprot_send(req, io);
+}
diff --git a/source4/smb_server/smb2/receive.c b/source4/smb_server/smb2/receive.c
new file mode 100644
index 0000000000..87b480ee64
--- /dev/null
+++ b/source4/smb_server/smb2/receive.c
@@ -0,0 +1,269 @@
+/* 
+   Unix SMB2 implementation.
+   
+   Copyright (C) Andrew Tridgell	2005
+   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 "system/time.h"
+#include "smbd/service_stream.h"
+#include "libcli/smb2/smb2.h"
+#include "smb_server/smb_server.h"
+#include "smb_server/smb2/smb2_server.h"
+#include "lib/stream/packet.h"
+
+
+static struct smb2srv_request *smb2srv_init_request(struct smbsrv_connection *smb_conn)
+{
+	struct smb2srv_request *req;
+
+	req = talloc_zero(smb_conn, struct smb2srv_request);
+	if (!req) return NULL;
+
+	req->smb_conn = smb_conn;
+
+	return req;
+}
+
+NTSTATUS smb2srv_setup_reply(struct smb2srv_request *req, uint_t body_fixed_size, uint_t body_dynamic_size)
+{
+	req->out.size		= SMB2_HDR_BODY+NBT_HDR_SIZE+body_fixed_size;
+
+	req->out.allocated	= req->out.size + body_dynamic_size;
+	req->out.buffer		= talloc_size(req, req->out.allocated);
+	NT_STATUS_HAVE_NO_MEMORY(req->out.buffer);
+
+	req->out.hdr		= req->out.buffer	+ NBT_HDR_SIZE;
+	req->out.body		= req->out.hdr		+ SMB2_HDR_BODY;
+	req->out.body_size	= body_fixed_size;
+	req->out.dynamic	= (body_dynamic_size ? req->out.body + body_fixed_size : NULL);
+
+	SIVAL(req->out.hdr, 0,                SMB2_MAGIC);
+	SSVAL(req->out.hdr, SMB2_HDR_LENGTH,  SMB2_HDR_BODY);
+	SSVAL(req->out.hdr, SMB2_HDR_PAD1,    0);
+	SIVAL(req->out.hdr, SMB2_HDR_STATUS,  0);
+	SSVAL(req->out.hdr, SMB2_HDR_OPCODE,  SVAL(req->in.hdr, SMB2_HDR_OPCODE));
+	SSVAL(req->out.hdr, SMB2_HDR_PAD2,    0);
+	SIVAL(req->out.hdr, SMB2_HDR_FLAGS,   0x00000001);
+	SIVAL(req->out.hdr, SMB2_HDR_UNKNOWN, 0);
+	SBVAL(req->out.hdr, SMB2_HDR_SEQNUM,  req->seqnum);
+	SIVAL(req->out.hdr, SMB2_HDR_PID,     IVAL(req->in.hdr, SMB2_HDR_PID));
+	SIVAL(req->out.hdr, SMB2_HDR_TID,     IVAL(req->in.hdr, SMB2_HDR_TID));
+	SBVAL(req->out.hdr, SMB2_HDR_UID,     BVAL(req->in.hdr, SMB2_HDR_UID));
+	memset(req->out.hdr+SMB2_HDR_SIG, 0, 16);
+
+	/* set the length of the fixed body part and +1 if there's a dynamic part also */
+	SSVAL(req->out.body, 0, body_fixed_size + (body_dynamic_size?1:0));
+
+	/* 
+	 * if we have a dynamic part, make sure the first byte
+	 * which is always be part of the packet is initialized
+	 */
+	if (body_dynamic_size) {
+		SCVAL(req->out.dynamic, 0, 0);
+	}
+
+	return NT_STATUS_OK;
+}
+
+void smb2srv_send_reply(struct smb2srv_request *req)
+{
+	DATA_BLOB blob;
+	NTSTATUS status;
+
+	if (req->out.size > NBT_HDR_SIZE) {
+		_smb_setlen(req->out.buffer, req->out.size - NBT_HDR_SIZE);
+	}
+
+	blob = data_blob_const(req->out.buffer, req->out.size);
+	status = packet_send(req->smb_conn->packet, blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+	}
+	talloc_free(req);
+}
+
+void smb2srv_send_error(struct smb2srv_request *req, NTSTATUS error)
+{
+	NTSTATUS status;
+
+	status = smb2srv_setup_reply(req, 8, 1);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(error));
+
+	SSVAL(req->out.body, 0x02, 0);
+	SIVAL(req->out.body, 0x04, 0);
+
+	smb2srv_send_reply(req);
+}
+
+static NTSTATUS smb2srv_reply(struct smb2srv_request *req)
+{
+	uint16_t opcode;
+
+	opcode		= SVAL(req->in.hdr, SMB2_HDR_OPCODE);
+	req->seqnum	= BVAL(req->in.hdr, SMB2_HDR_SEQNUM);
+
+	errno = 0;
+
+	switch (opcode) {
+	case SMB2_OP_NEGPROT:
+		smb2srv_negprot_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_SESSSETUP:
+		smb2srv_sesssetup_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_TCON:
+		smb2srv_tcon_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_TDIS:
+		smb2srv_tdis_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_CREATE:
+		smb2srv_create_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_CLOSE:
+		smb2srv_close_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_READ:
+		smb2srv_read_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_WRITE:
+		smb2srv_write_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_CANCEL:
+		smb2srv_cancel_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_FIND:
+		smb2srv_find_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_NOTIFY:
+		smb2srv_notify_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_GETINFO:
+		smb2srv_getinfo_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_SETINFO:
+		smb2srv_setinfo_recv(req);
+		return NT_STATUS_OK;
+	case SMB2_OP_BREAK:
+		smb2srv_break_recv(req);
+		return NT_STATUS_OK;
+	}
+
+	DEBUG(1,("Invalid SMB2 opcode: 0x%04X\n", opcode));
+	smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 opcode");
+	return NT_STATUS_OK;
+}
+
+NTSTATUS smbsrv_recv_smb2_request(void *private, DATA_BLOB blob)
+{
+	struct smbsrv_connection *smb_conn = talloc_get_type(private, struct smbsrv_connection);
+	struct smb2srv_request *req;
+	uint32_t protocol_version;
+	uint16_t buffer_code;
+	uint32_t dynamic_size;
+
+	/* see if its a special NBT packet */
+	if (CVAL(blob.data,0) != 0) {
+		DEBUG(2,("Special NBT packet on SMB2 connection"));
+		smbsrv_terminate_connection(smb_conn, "Special NBT packet on SMB2 connection");
+		return NT_STATUS_OK;
+	}
+
+	if (blob.length < (NBT_HDR_SIZE + SMB2_MIN_SIZE)) {
+		DEBUG(2,("Invalid SMB2 packet length count %d\n", blob.length));
+		smbsrv_terminate_connection(smb_conn, "Invalid SMB2 packet");
+		return NT_STATUS_OK;
+	}
+
+	protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
+
+	if (protocol_version != SMB2_MAGIC) {
+		DEBUG(2,("Invalid SMB packet: protocl prefix: 0x%08X\n", protocol_version));
+		smbsrv_terminate_connection(smb_conn, "NON-SMB2 packet");
+		return NT_STATUS_OK;
+	}
+
+	req = smb2srv_init_request(smb_conn);
+	NT_STATUS_HAVE_NO_MEMORY(req);
+
+	req->in.buffer		= talloc_steal(req, blob.data);
+	req->in.size		= blob.length;
+	req->request_time	= timeval_current();
+	req->in.allocated	= req->in.size;
+
+	req->in.hdr		= req->in.buffer+ NBT_HDR_SIZE;
+	req->in.body		= req->in.hdr	+ SMB2_HDR_BODY;
+	req->in.body_size	= req->in.size	- (SMB2_HDR_BODY+NBT_HDR_SIZE);
+	req->in.dynamic 	= NULL;
+
+	buffer_code		= SVAL(req->in.body, 0);
+	dynamic_size		= req->in.body_size - (buffer_code & ~1);
+
+	if (dynamic_size != 0 && (buffer_code & 1)) {
+		req->in.dynamic = req->in.body + (buffer_code & ~1);
+		if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
+			DEBUG(1,("SMB2 request invalid dynamic size 0x%x\n", 
+				 dynamic_size));
+			smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
+			return NT_STATUS_OK;
+		}
+	}
+
+	/* 
+	 * TODO: - make sure the length field is 64
+	 *       - make sure it's a request
+	 */
+
+	return smb2srv_reply(req);
+}
+
+/*
+ * init the SMB2 protocol related stuff
+ */
+NTSTATUS smbsrv_init_smb2_connection(struct smbsrv_connection *smb_conn)
+{
+	NTSTATUS status;
+
+	/* now initialise a few default values associated with this smb socket */
+	smb_conn->negotiate.max_send = 0xFFFF;
+
+	/* this is the size that w2k uses, and it appears to be important for
+	   good performance */
+	smb_conn->negotiate.max_recv = lp_max_xmit();
+
+	smb_conn->negotiate.zone_offset = get_time_zone(time(NULL));
+
+	smb_conn->config.security = SEC_USER;
+	smb_conn->config.nt_status_support = True;
+
+	status = smbsrv_init_sessions(smb_conn, UINT64_MAX);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	status = smbsrv_init_tcons(smb_conn, UINT32_MAX);
+	NT_STATUS_NOT_OK_RETURN(status);
+
+	return NT_STATUS_OK;
+	
+}
diff --git a/source4/smb_server/smb2/sesssetup.c b/source4/smb_server/smb2/sesssetup.c
new file mode 100644
index 0000000000..af0c074dac
--- /dev/null
+++ b/source4/smb_server/smb2/sesssetup.c
@@ -0,0 +1,185 @@
+/* 
+   Unix SMB2 implementation.
+   
+   Copyright (C) Andrew Bartlett	2001-2005
+   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/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+#include "smb_server/smb_server.h"
+#include "smb_server/smb2/smb2_server.h"
+#include "smbd/service_stream.h"
+
+struct smb2srv_session {
+	struct smb2srv_session *prev,*next;
+	uint64_t uid;
+	struct gensec_security *gensec_ctx;
+	struct auth_session_info *session_info;
+};
+
+static NTSTATUS smb2srv_sesssetup_backend(struct smb2srv_request *req, struct smb2_session_setup *io)
+{
+	NTSTATUS status = NT_STATUS_ACCESS_DENIED;
+	struct smbsrv_session *smb_sess = NULL;
+	struct auth_session_info *session_info = NULL;
+	uint64_t vuid;
+
+	io->out._pad	= 0;
+	io->out.uid	= 0;
+	io->out.secblob = data_blob(NULL, 0);
+
+	vuid = BVAL(req->in.hdr, SMB2_HDR_UID);
+
+	/* TODO: we're stricter than the SMB version till we have
+	 *       SMB2-CONTEXT test
+	 */
+	if (vuid == 0) {
+		struct gensec_security *gensec_ctx;
+
+		status = gensec_server_start(req, &gensec_ctx,
+					     req->smb_conn->connection->event.ctx);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
+			return status;
+		}
+
+		gensec_set_credentials(gensec_ctx, req->smb_conn->negotiate.server_credentials);
+
+		gensec_set_target_service(gensec_ctx, "cifs");
+
+		gensec_want_feature(gensec_ctx, GENSEC_FEATURE_SESSION_KEY);
+
+		status = gensec_start_mech_by_oid(gensec_ctx, GENSEC_OID_SPNEGO);
+		if (!NT_STATUS_IS_OK(status)) {
+			DEBUG(1, ("Failed to start GENSEC SPNEGO server code: %s\n", nt_errstr(status)));
+			return status;
+		}
+
+		/* allocate a new session */
+		smb_sess = smbsrv_session_new(req->smb_conn, gensec_ctx);
+	} else {
+		/* lookup an existing session */
+		smb_sess = smbsrv_session_find_sesssetup(req->smb_conn, vuid);
+	}
+
+	if (!smb_sess) {
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
+	if (!smb_sess->gensec_ctx) {
+		status = NT_STATUS_INTERNAL_ERROR;
+		DEBUG(1, ("Internal ERROR: no gensec_ctx on session: %s\n", nt_errstr(status)));
+		goto failed;
+	}
+
+	status = gensec_update(smb_sess->gensec_ctx, req, io->in.secblob, &io->out.secblob);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		io->out.uid = smb_sess->vuid;
+		return status;
+	} else if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+
+	status = gensec_session_info(smb_sess->gensec_ctx, &session_info);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+		
+	/* Ensure this is marked as a 'real' vuid, not one
+	 * simply valid for the session setup leg */
+	status = smbsrv_session_sesssetup_finished(smb_sess, session_info);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto failed;
+	}
+	req->session = smb_sess;
+
+	io->out.uid = smb_sess->vuid;
+	return status;
+
+failed:
+	talloc_free(smb_sess);
+	return auth_nt_status_squash(status);
+}
+
+static void smb2srv_sesssetup_send(struct smb2srv_request *req, struct smb2_session_setup *io)
+{
+	NTSTATUS status;
+
+	if (NT_STATUS_IS_ERR(req->status) && !NT_STATUS_EQUAL(req->status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+		smb2srv_send_error(req, req->status);
+		return;
+	}
+
+	status = smb2srv_setup_reply(req, 0x08, io->out.secblob.length);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status));
+	SBVAL(req->out.hdr, SMB2_HDR_UID,    io->out.uid);
+
+	SSVAL(req->out.body, 0x02, io->out._pad);
+	status = smb2_push_o16s16_blob(&req->out, 0x04, io->out.secblob);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	smb2srv_send_reply(req);
+}
+
+void smb2srv_sesssetup_recv(struct smb2srv_request *req)
+{
+	struct smb2_session_setup *io;
+	NTSTATUS status;
+
+	if (req->in.body_size < 0x10) {
+		smb2srv_send_error(req,  NT_STATUS_FOOBAR);
+		return;
+	}
+
+	io = talloc(req, struct smb2_session_setup);
+	if (!io) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(NT_STATUS_NO_MEMORY));
+		talloc_free(req);
+		return;
+	}
+
+	io->in._pad	= SVAL(req->in.body, 0x02);
+	io->in.unknown2 = IVAL(req->in.body, 0x04);
+	io->in.unknown3 = IVAL(req->in.body, 0x08);
+	status = smb2_pull_o16s16_blob(&req->in, io, req->in.body+0x0C, &io->in.secblob);
+	if (!NT_STATUS_IS_OK(status)) {
+		smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
+		talloc_free(req);
+		return;
+	}
+
+	req->status = smb2srv_sesssetup_backend(req, io);
+
+	if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) {
+		talloc_free(req);
+		return;
+	}
+	smb2srv_sesssetup_send(req, io);
+}
diff --git a/source4/smb_server/smb2/smb2_server.h b/source4/smb_server/smb2/smb2_server.h
new file mode 100644
index 0000000000..913c7f2eab
--- /dev/null
+++ b/source4/smb_server/smb2/smb2_server.h
@@ -0,0 +1,50 @@
+/* 
+   Unix SMB2 implementation.
+   
+   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.
+*/
+
+/* the context for a single SMB2 request. This is passed to any request-context 
+   functions */
+struct smb2srv_request {
+	/* the smbsrv_connection needs a list of requests queued for send */
+	struct smb2srv_request *next, *prev;
+
+	/* the server_context contains all context specific to this SMB socket */
+	struct smbsrv_connection *smb_conn;
+
+	/* the smbsrv_session for the request */
+	struct smbsrv_session *session;
+
+	/* the smbsrv_tcon for the request */
+	struct smbsrv_tcon *tcon;
+
+	/* the system time when the request arrived */
+	struct timeval request_time;
+
+	/* for matching request and reply */
+	uint64_t seqnum;
+
+	/* the status the backend returned */
+	NTSTATUS status;
+
+#define SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY (1<<0)
+	uint32_t control_flags;
+
+	struct smb2_request_buffer in;
+	struct smb2_request_buffer out;
+};
diff --git a/source4/smb_server/smb2/tcon.c b/source4/smb_server/smb2/tcon.c
new file mode 100644
index 0000000000..af9632eadc
--- /dev/null
+++ b/source4/smb_server/smb2/tcon.c
@@ -0,0 +1,34 @@
+/* 
+   Unix SMB2 implementation.
+   
+   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 "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+#include "smb_server/smb2/smb2_server.h"
+
+void smb2srv_tcon_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
+
+void smb2srv_tdis_recv(struct smb2srv_request *req)
+{
+	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+}
diff --git a/source4/smb_server/smb_server.c b/source4/smb_server/smb_server.c
index 3385e88d4a..f439bce061 100644
--- a/source4/smb_server/smb_server.c
+++ b/source4/smb_server/smb_server.c
@@ -27,6 +27,7 @@
 #include "smb_server/smb_server.h"
 #include "lib/messaging/irpc.h"
 #include "lib/stream/packet.h"
+#include "libcli/smb2/smb2.h"
 
 static NTSTATUS smbsrv_recv_generic_request(void *private, DATA_BLOB blob)
 {
@@ -56,6 +57,12 @@ static NTSTATUS smbsrv_recv_generic_request(void *private, DATA_BLOB blob)
 		NT_STATUS_NOT_OK_RETURN(status);
 		packet_set_callback(smb_conn->packet, smbsrv_recv_smb_request);
 		return smbsrv_recv_smb_request(smb_conn, blob);
+	case SMB2_MAGIC:
+		if (!lp_parm_bool(-1, "smbsrv", "enable smb2", False)) break;
+		status = smbsrv_init_smb2_connection(smb_conn);
+		NT_STATUS_NOT_OK_RETURN(status);
+		packet_set_callback(smb_conn->packet, smbsrv_recv_smb2_request);
+		return smbsrv_recv_smb2_request(smb_conn, blob);
 	}
 
 	DEBUG(2,("Invalid SMB packet: protocl prefix: 0x%08X\n", protocol_version));