diff options
Diffstat (limited to 'source4/smb_server/smb2/smb2_server.h')
| -rw-r--r-- | source4/smb_server/smb2/smb2_server.h | 192 |
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) |