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)

1 files changed, 185 insertions, 0 deletions

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);
+}