s3:smb2_sesssetup: make use of the smbXsrv_session infrastructure

We still have smbd_smb2_session as primary structure,
but that will went away once we got rid of smbd_smb2_tcon.

metze

4 files changed, 138 insertions, 63 deletions

diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index aaea100a65..9eadc99c0e 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -494,8 +494,8 @@ struct smbd_smb2_session {
 	uint64_t vuid;
 	struct gensec_security *gensec_security;
 	struct auth_session_info *session_info;
-	DATA_BLOB session_key;
-	bool do_signing;
+
+	struct smbXsrv_session *smbXsrv;
 
 	struct user_struct *compat_vuser;
 
@@ -532,6 +532,8 @@ struct user_struct {
 	struct auth_session_info *session_info;
 
 	struct gensec_security *gensec_security;
+
+	struct smbXsrv_session0 *session;
 };
 
 struct smbd_server_connection {
@@ -672,14 +674,6 @@ struct smbd_server_connection {
 		struct tstream_context *stream;
 		bool negprot_2ff;
 		struct {
-			/* an id tree used to allocate vuids */
-			/* this holds info on session vuids that are already
-			 * validated for this VC */
-			struct idr_context *idtree;
-
-			/* this is the limit of vuid values for this connection */
-			uint64_t limit;
-
 			struct smbd_smb2_session *list;
 		} sessions;
 		struct {
diff --git a/source3/smbd/process.c b/source3/smbd/process.c
index 77c4804a38..e25fbc77c1 100644
--- a/source3/smbd/process.c
+++ b/source3/smbd/process.c
@@ -3157,9 +3157,18 @@ static void smbd_id_cache_kill(struct messaging_context *msg_ctx,
 NTSTATUS smbXsrv_connection_init_tables(struct smbXsrv_connection *conn,
 					enum protocol_types protocol)
 {
+	NTSTATUS status;
+
 	set_Protocol(protocol);
 	conn->protocol = protocol;
 
+	if (protocol >= PROTOCOL_SMB2_02) {
+		status = smb2srv_session_table_init(conn);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
+		}
+	}
+
 	return NT_STATUS_OK;
 }
 
diff --git a/source3/smbd/smb2_server.c b/source3/smbd/smb2_server.c
index 5d30aa4890..f49c05cd56 100644
--- a/source3/smbd/smb2_server.c
+++ b/source3/smbd/smb2_server.c
@@ -108,11 +108,6 @@ static NTSTATUS smbd_initialize_smb2(struct smbd_server_connection *sconn)
 		return NT_STATUS_NO_MEMORY;
 	}
 
-	sconn->smb2.sessions.idtree = idr_init(sconn);
-	if (sconn->smb2.sessions.idtree == NULL) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	sconn->smb2.sessions.limit = 0x0000FFFE;
 	sconn->smb2.sessions.list = NULL;
 	sconn->smb2.seqnum_low = 0;
 	sconn->smb2.credits_granted = 0;
@@ -816,9 +811,13 @@ static NTSTATUS smb2_send_async_interim_response(const struct smbd_smb2_request
 	/* Re-sign if needed. */
 	if (nreq->do_signing) {
 		NTSTATUS status;
-		status = smb2_signing_sign_pdu(nreq->session->session_key,
-					get_Protocol(),
-					&nreq->out.vector[i], 3);
+		struct smbXsrv_session *x = nreq->session->smbXsrv;
+		struct smbXsrv_connection *conn = x->connection;
+		DATA_BLOB signing_key = x->global->channels[0].signing_key;
+
+		status = smb2_signing_sign_pdu(signing_key,
+					       conn->protocol,
+					       &nreq->out.vector[i], 3);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
 		}
@@ -1101,10 +1100,13 @@ static void smbd_smb2_request_pending_timer(struct tevent_context *ev,
 
 	if (req->do_signing) {
 		NTSTATUS status;
+		struct smbXsrv_session *x = req->session->smbXsrv;
+		struct smbXsrv_connection *conn = x->connection;
+		DATA_BLOB signing_key = x->global->channels[0].signing_key;
 
-		status = smb2_signing_sign_pdu(req->session->session_key,
-					get_Protocol(),
-					&state->vector[1], 2);
+		status = smb2_signing_sign_pdu(signing_key,
+					       conn->protocol,
+					       &state->vector[1], 2);
 		if (!NT_STATUS_IS_OK(status)) {
 			smbd_server_connection_terminate(req->sconn,
 						nt_errstr(status));
@@ -1247,8 +1249,10 @@ static NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req)
 	int i = req->current_idx;
 	uint32_t in_flags;
 	uint64_t in_session_id;
-	void *p;
 	struct smbd_smb2_session *session;
+	struct smbXsrv_session *smbXsrv;
+	NTSTATUS status;
+	NTTIME now = timeval_to_nttime(&req->request_time);
 
 	req->session = NULL;
 	req->tcon = NULL;
@@ -1263,12 +1267,13 @@ static NTSTATUS smbd_smb2_request_check_session(struct smbd_smb2_request *req)
 	}
 
 	/* lookup an existing session */
-	p = idr_find(req->sconn->smb2.sessions.idtree, in_session_id);
-	if (p == NULL) {
-		return NT_STATUS_USER_SESSION_DELETED;
+	status = smb2srv_session_lookup(req->sconn->conn,
+					in_session_id, now,
+					&smbXsrv);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
 	}
-	session = talloc_get_type_abort(p, struct smbd_smb2_session);
-
+	session = smbXsrv->smb2sess;
 	if (!NT_STATUS_IS_OK(session->status)) {
 		return NT_STATUS_ACCESS_DENIED;
 	}
@@ -1388,6 +1393,7 @@ NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
 	NTSTATUS session_status;
 	uint32_t allowed_flags;
 	NTSTATUS return_value;
+	struct smbXsrv_session *x = NULL;
 
 	inhdr = (const uint8_t *)req->in.vector[i].iov_base;
 
@@ -1439,23 +1445,29 @@ NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
 	 * we defer the check of the session_status
 	 */
 	session_status = smbd_smb2_request_check_session(req);
+	if (req->session) {
+		x = req->session->smbXsrv;
+	}
 
 	req->do_signing = false;
 	if (flags & SMB2_HDR_FLAG_SIGNED) {
+		struct smbXsrv_connection *conn = x->connection;
+		DATA_BLOB signing_key = x->global->channels[0].signing_key;
+
 		if (!NT_STATUS_IS_OK(session_status)) {
 			return smbd_smb2_request_error(req, session_status);
 		}
 
 		req->do_signing = true;
-		status = smb2_signing_check_pdu(req->session->session_key,
-						get_Protocol(),
+		status = smb2_signing_check_pdu(signing_key,
+						conn->protocol,
 						&req->in.vector[i], 3);
 		if (!NT_STATUS_IS_OK(status)) {
 			return smbd_smb2_request_error(req, status);
 		}
 	} else if (opcode == SMB2_OP_CANCEL) {
 		/* Cancel requests are allowed to skip the signing */
-	} else if (req->session && req->session->do_signing) {
+	} else if (x && x->global->signing_required) {
 		return smbd_smb2_request_error(req, NT_STATUS_ACCESS_DENIED);
 	}
 
@@ -1937,8 +1949,12 @@ static NTSTATUS smbd_smb2_request_reply(struct smbd_smb2_request *req)
 
 	if (req->do_signing) {
 		NTSTATUS status;
-		status = smb2_signing_sign_pdu(req->session->session_key,
-					       get_Protocol(),
+		struct smbXsrv_session *x = req->session->smbXsrv;
+		struct smbXsrv_connection *conn = x->connection;
+		DATA_BLOB signing_key = x->global->channels[0].signing_key;
+
+		status = smb2_signing_sign_pdu(signing_key,
+					       conn->protocol,
 					       &req->out.vector[i], 3);
 		if (!NT_STATUS_IS_OK(status)) {
 			return status;
diff --git a/source3/smbd/smb2_sesssetup.c b/source3/smbd/smb2_sesssetup.c
index 36084a4df6..bc13ffbf72 100644
--- a/source3/smbd/smb2_sesssetup.c
+++ b/source3/smbd/smb2_sesssetup.c
@@ -187,7 +187,6 @@ static int smbd_smb2_session_destructor(struct smbd_smb2_session *session)
 		talloc_free(session->tcons.list);
 	}
 
-	idr_remove(session->sconn->smb2.sessions.idtree, session->vuid);
 	DLIST_REMOVE(session->sconn->smb2.sessions.list, session);
 	invalidate_vuid(session->sconn, session->vuid);
 
@@ -195,6 +194,9 @@ static int smbd_smb2_session_destructor(struct smbd_smb2_session *session)
 	session->status = NT_STATUS_USER_SESSION_DELETED;
 	session->sconn = NULL;
 
+	session->smbXsrv->compat = NULL;
+	TALLOC_FREE(session->smbXsrv);
+
 	return 0;
 }
 
@@ -206,11 +208,14 @@ static NTSTATUS smbd_smb2_auth_generic_return(struct smbd_smb2_session *session,
 					uint16_t *out_session_flags,
 					uint64_t *out_session_id)
 {
+	NTSTATUS status;
 	bool guest = false;
+	uint8_t session_key[16];
+	struct smbXsrv_session *x = session->smbXsrv;
 
 	if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
 	    lp_server_signing() == SMB_SIGNING_REQUIRED) {
-		session->do_signing = true;
+		x->global->signing_required = true;
 	}
 
 	if (security_session_user_level(session->session_info, NULL) < SECURITY_USER) {
@@ -218,11 +223,39 @@ static NTSTATUS smbd_smb2_auth_generic_return(struct smbd_smb2_session *session,
 		*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
 		*out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
 		/* force no signing */
-		session->do_signing = false;
+		x->global->signing_required = false;
 		guest = true;
 	}
 
-	session->session_key = session->session_info->session_key;
+	ZERO_STRUCT(session_key);
+	memcpy(session_key, session->session_info->session_key.data,
+	       MIN(session->session_info->session_key.length, sizeof(session_key)));
+
+	x->global->signing_key = data_blob_talloc(x->global,
+						  session_key,
+						  sizeof(session_key));
+	if (x->global->signing_key.data == NULL) {
+		ZERO_STRUCT(session_key);
+		TALLOC_FREE(session);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	x->global->application_key = data_blob_dup_talloc(x->global,
+						x->global->signing_key);
+	if (x->global->application_key.data == NULL) {
+		ZERO_STRUCT(session_key);
+		TALLOC_FREE(session);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ZERO_STRUCT(session_key);
+
+	x->global->channels[0].signing_key = data_blob_dup_talloc(x->global->channels,
+						x->global->signing_key);
+	if (x->global->channels[0].signing_key.data == NULL) {
+		TALLOC_FREE(session);
+		return NT_STATUS_NO_MEMORY;
+	}
 
 	session->compat_vuser = talloc_zero(session, struct user_struct);
 	if (session->compat_vuser == NULL) {
@@ -256,6 +289,21 @@ static NTSTATUS smbd_smb2_auth_generic_return(struct smbd_smb2_session *session,
 
 	reload_services(smb2req->sconn, conn_snum_used, true);
 
+	session->smbXsrv->status = NT_STATUS_OK;
+	session->smbXsrv->global->auth_session_info = session->session_info;
+	session->smbXsrv->global->auth_session_info_seqnum += 1;
+	session->smbXsrv->global->channels[0].auth_session_info_seqnum =
+		session->smbXsrv->global->auth_session_info_seqnum;
+
+	status = smbXsrv_session_update(session->smbXsrv);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
+			  (unsigned long long)session->compat_vuser->vuid,
+			  nt_errstr(status)));
+		TALLOC_FREE(session);
+		return NT_STATUS_LOGON_FAILURE;
+	}
+
 	session->status = NT_STATUS_OK;
 
 	/*
@@ -351,55 +399,63 @@ static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
 					DATA_BLOB *out_security_buffer,
 					uint64_t *out_session_id)
 {
-	struct smbd_smb2_session *session;
+	struct smbd_smb2_session *smb2sess;
+	struct smbXsrv_session *session;
+	NTSTATUS status;
+	NTTIME now = timeval_to_nttime(&smb2req->request_time);
 
 	*out_session_flags = 0;
 	*out_session_id = 0;
 
 	if (in_session_id == 0) {
-		int id;
-
 		/* create a new session */
-		session = talloc_zero(smb2req->sconn, struct smbd_smb2_session);
-		if (session == NULL) {
+		smb2sess = talloc_zero(smb2req->sconn, struct smbd_smb2_session);
+		if (smb2sess == NULL) {
 			return NT_STATUS_NO_MEMORY;
 		}
-		session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
-		id = idr_get_new_random(smb2req->sconn->smb2.sessions.idtree,
-					session,
-					smb2req->sconn->smb2.sessions.limit);
-		if (id == -1) {
-			return NT_STATUS_INSUFFICIENT_RESOURCES;
+
+		status = smbXsrv_session_create(smb2req->sconn->conn,
+					        now, &session);
+		if (!NT_STATUS_IS_OK(status)) {
+			return status;
 		}
-		session->vuid = id;
+		smb2sess->smbXsrv = session;
+		session->smb2sess = smb2sess;
+		talloc_set_destructor(smb2sess, smbd_smb2_session_destructor);
 
-		session->tcons.idtree = idr_init(session);
-		if (session->tcons.idtree == NULL) {
+		smb2sess->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+		smb2sess->vuid = session->global->session_wire_id;
+
+		smb2sess->tcons.idtree = idr_init(smb2sess);
+		if (smb2sess->tcons.idtree == NULL) {
 			return NT_STATUS_NO_MEMORY;
 		}
-		session->tcons.limit = 0x0000FFFE;
-		session->tcons.list = NULL;
+		smb2sess->tcons.limit = 0x0000FFFE;
+		smb2sess->tcons.list = NULL;
 
-		DLIST_ADD_END(smb2req->sconn->smb2.sessions.list, session,
+		DLIST_ADD_END(smb2req->sconn->smb2.sessions.list, smb2sess,
 			      struct smbd_smb2_session *);
-		session->sconn = smb2req->sconn;
-		talloc_set_destructor(session, smbd_smb2_session_destructor);
+		smb2sess->sconn = smb2req->sconn;
 	} else {
-		void *p;
+		status = smb2srv_session_lookup(smb2req->sconn->conn,
+						in_session_id, now,
+						&session);
+		if (NT_STATUS_IS_OK(status)) {
+			return NT_STATUS_REQUEST_NOT_ACCEPTED;
+		}
+		if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 
-		/* lookup an existing session */
-		p = idr_find(smb2req->sconn->smb2.sessions.idtree, in_session_id);
-		if (p == NULL) {
-			return NT_STATUS_USER_SESSION_DELETED;
+			return status;
 		}
-		session = talloc_get_type_abort(p, struct smbd_smb2_session);
+
+		smb2sess = session->smb2sess;
 	}
 
-	if (NT_STATUS_IS_OK(session->status)) {
+	if (NT_STATUS_IS_OK(smb2sess->status)) {
 		return NT_STATUS_REQUEST_NOT_ACCEPTED;
 	}
 
-	return smbd_smb2_auth_generic(session,
+	return smbd_smb2_auth_generic(smb2sess,
 				      smb2req,
 				      in_security_mode,
 				      in_previous_session_id,