Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 192 insertions, 0 deletions

diff --git a/source4/smb_server/smb2/smb2_server.h b/source4/smb_server/smb2/smb2_server.h
new file mode 100644
index 0000000..5fe12fe
--- /dev/null
+++ b/source4/smb_server/smb2/smb2_server.h
@@ -0,0 +1,192 @@
+/* 
+   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 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/>.
+*/
+
+/* 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;
+
+	/* conn is only set for operations that have a valid TID */
+	struct smbsrv_tcon *tcon;
+
+	/* the session context is derived from the vuid */
+	struct smbsrv_session *session;
+
+#define SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY (1<<0)
+	uint32_t control_flags;
+
+	/* the system time when the request arrived */
+	struct timeval request_time;
+
+	/* a pointer to the per request union smb_* io structure */
+	void *io_ptr;
+
+	/* the ntvfs_request */
+	struct ntvfs_request *ntvfs;
+
+	/* Now the SMB2 specific stuff */
+
+	/* the status the backend returned */
+	NTSTATUS status;
+
+	/* for matching request and reply */
+	uint64_t seqnum;
+
+	/* the id that can be used to cancel the request */
+	uint32_t pending_id;
+
+	/* the offset to the next SMB2 Header for chained requests */
+	uint32_t chain_offset;
+
+	/* the status we return for following chained requests */
+	NTSTATUS chain_status;
+
+	/* chained file handle */
+	uint8_t _chained_file_handle[16];
+	uint8_t *chained_file_handle;
+	uint64_t chained_session_id;
+	uint32_t chained_tree_id;
+
+	bool is_signed;
+
+	struct smb2_request_buffer in;
+	struct smb2_request_buffer out;
+};
+
+struct smbsrv_request;
+
+#include "smb_server/smb2/smb2_proto.h"
+
+/* useful way of catching field size errors with file and line number */
+#define SMB2SRV_CHECK_BODY_SIZE(req, size, dynamic) do { \
+	size_t is_size = req->in.body_size; \
+	uint16_t field_size; \
+	uint16_t want_size = ((dynamic)?(size)+1:(size)); \
+	if (is_size < (size)) { \
+		DEBUG(0,("%s: buffer too small 0x%x. Expected 0x%x\n", \
+			 __location__, (unsigned)is_size, (unsigned)want_size)); \
+		smb2srv_send_error(req,  NT_STATUS_INVALID_PARAMETER); \
+		return; \
+	}\
+	field_size = SVAL(req->in.body, 0);       \
+	if (field_size != want_size) { \
+		DEBUG(0,("%s: unexpected fixed body size 0x%x. Expected 0x%x\n", \
+			 __location__, (unsigned)field_size, (unsigned)want_size)); \
+		smb2srv_send_error(req,  NT_STATUS_INVALID_PARAMETER); \
+		return; \
+	} \
+} while (0)
+
+#define SMB2SRV_CHECK(cmd) do {\
+	NTSTATUS _status; \
+	_status = cmd; \
+	if (!NT_STATUS_IS_OK(_status)) { \
+		smb2srv_send_error(req,  _status); \
+		return; \
+	} \
+} while (0)
+
+/* useful wrapper for talloc with NO_MEMORY reply */
+#define SMB2SRV_TALLOC_IO_PTR(ptr, type) do { \
+	ptr = talloc(req, type); \
+	if (!ptr) { \
+		smb2srv_send_error(req, NT_STATUS_NO_MEMORY); \
+		return; \
+	} \
+	req->io_ptr = ptr; \
+} while (0)
+
+#define SMB2SRV_SETUP_NTVFS_REQUEST(send_fn, state) do { \
+	req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req, \
+					  req->session->session_info,\
+					  0, \
+					  req->request_time, \
+					  req, send_fn, state); \
+	if (!req->ntvfs) { \
+		smb2srv_send_error(req, NT_STATUS_NO_MEMORY); \
+		return; \
+	} \
+	(void)talloc_steal(req->tcon->ntvfs, req); \
+	req->ntvfs->frontend_data.private_data = req; \
+} while (0)
+
+#define SMB2SRV_CHECK_FILE_HANDLE(handle) do { \
+	if (!handle) { \
+		smb2srv_send_error(req, NT_STATUS_FILE_CLOSED); \
+		return; \
+	} \
+} while (0)
+
+/* 
+   check if the backend wants to handle the request asynchronously.
+   if it wants it handled synchronously then call the send function
+   immediately
+*/
+#define SMB2SRV_CALL_NTVFS_BACKEND(cmd) do { \
+	req->ntvfs->async_states->status = cmd; \
+	if (req->ntvfs->async_states->state & NTVFS_ASYNC_STATE_ASYNC) { \
+		NTSTATUS _status; \
+		_status = smb2srv_queue_pending(req); \
+		if (!NT_STATUS_IS_OK(_status)) { \
+			ntvfs_cancel(req->ntvfs); \
+		} \
+	} else { \
+		req->ntvfs->async_states->send_fn(req->ntvfs); \
+	} \
+} while (0)
+
+/* check req->ntvfs->async_states->status and if not OK then send an error reply */
+#define SMB2SRV_CHECK_ASYNC_STATUS_ERR_SIMPLE do { \
+	req = talloc_get_type(ntvfs->async_states->private_data, struct smb2srv_request); \
+	if (ntvfs->async_states->state & NTVFS_ASYNC_STATE_CLOSE || NT_STATUS_EQUAL(ntvfs->async_states->status, NT_STATUS_NET_WRITE_FAULT)) { \
+		smbsrv_terminate_connection(req->smb_conn, get_friendly_nt_error_msg (ntvfs->async_states->status)); \
+		talloc_free(req); \
+		return; \
+	} \
+	req->status = ntvfs->async_states->status; \
+	if (NT_STATUS_IS_ERR(ntvfs->async_states->status)) { \
+		smb2srv_send_error(req, ntvfs->async_states->status); \
+		return; \
+	} \
+} while (0)
+#define SMB2SRV_CHECK_ASYNC_STATUS_ERR(ptr, type) do { \
+	SMB2SRV_CHECK_ASYNC_STATUS_ERR_SIMPLE; \
+	ptr = talloc_get_type(req->io_ptr, type); \
+} while (0)
+#define SMB2SRV_CHECK_ASYNC_STATUS_SIMPLE do { \
+	req = talloc_get_type(ntvfs->async_states->private_data, struct smb2srv_request); \
+	if (ntvfs->async_states->state & NTVFS_ASYNC_STATE_CLOSE || NT_STATUS_EQUAL(ntvfs->async_states->status, NT_STATUS_NET_WRITE_FAULT)) { \
+		smbsrv_terminate_connection(req->smb_conn, get_friendly_nt_error_msg (ntvfs->async_states->status)); \
+		talloc_free(req); \
+		return; \
+	} \
+	req->status = ntvfs->async_states->status; \
+	if (!NT_STATUS_IS_OK(ntvfs->async_states->status)) { \
+		smb2srv_send_error(req, ntvfs->async_states->status); \
+		return; \
+	} \
+} while (0)
+#define SMB2SRV_CHECK_ASYNC_STATUS(ptr, type) do { \
+	SMB2SRV_CHECK_ASYNC_STATUS_SIMPLE; \
+	ptr = talloc_get_type(req->io_ptr, type); \
+} while (0)