--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+
+ Copyright (C) Andrew Tridgell 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.
+*/
+/*
+ a composite API for saving a whole file from memory
+*/
+
+#include "includes.h"
+#include "libcli/raw/libcliraw.h"
+#include "libcli/composite/composite.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+/* the stages of this call */
+enum savefile_stage {SAVEFILE_OPEN, SAVEFILE_WRITE, SAVEFILE_CLOSE};
+
+
+static void savefile_handler(struct smbcli_request *req);
+
+struct savefile_state {
+ off_t total_written;
+};
+
+
+/*
+ setup for the close
+*/
+static NTSTATUS setup_close(struct smbcli_composite *c,
+ struct smbcli_tree *tree, uint16_t fnum)
+{
+ union smb_close *io_close;
+
+ /* nothing to write, setup the close */
+ io_close = talloc(c, union smb_close);
+ NT_STATUS_HAVE_NO_MEMORY(io_close);
+
+ io_close->close.level = RAW_CLOSE_CLOSE;
+ io_close->close.in.fnum = fnum;
+ io_close->close.in.write_time = 0;
+
+ c->req = smb_raw_close_send(tree, io_close);
+ NT_STATUS_HAVE_NO_MEMORY(c->req);
+
+ /* call the handler again when the close is done */
+ c->stage = SAVEFILE_CLOSE;
+ c->req->async.fn = savefile_handler;
+ c->req->async.private = c;
+ c->req_parms = io_close;
+
+ return NT_STATUS_OK;
+}
+
+/*
+ called when the open is done - pull the results and setup for the
+ first writex, or close if the file is zero size
+*/
+static NTSTATUS savefile_open(struct smbcli_composite *c,
+ struct smb_composite_savefile *io)
+{
+ union smb_open *io_open = c->req_parms;
+ struct smbcli_tree *tree = c->req->tree;
+ union smb_write *io_write;
+ NTSTATUS status;
+ uint32_t max_xmit = tree->session->transport->negotiate.max_xmit;
+
+ status = smb_raw_open_recv(c->req, c, io_open);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ if (io->in.size == 0) {
+ return setup_close(c, tree, io_open->ntcreatex.out.fnum);
+ }
+
+ /* setup for the first write */
+ io_write = talloc(c, union smb_write);
+ NT_STATUS_HAVE_NO_MEMORY(io_write);
+
+ io_write->writex.level = RAW_WRITE_WRITEX;
+ io_write->writex.in.fnum = io_open->ntcreatex.out.fnum;
+ io_write->writex.in.offset = 0;
+ io_write->writex.in.wmode = 0;
+ io_write->writex.in.remaining = 0;
+ io_write->writex.in.count = MIN(max_xmit - 100, io->in.size);
+ io_write->writex.in.data = io->in.data;
+
+ c->req = smb_raw_write_send(tree, io_write);
+ NT_STATUS_HAVE_NO_MEMORY(c->req);
+
+ /* call the handler again when the first write is done */
+ c->stage = SAVEFILE_WRITE;
+ c->req->async.fn = savefile_handler;
+ c->req->async.private = c;
+ c->req_parms = io_write;
+ talloc_free(io_open);
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ called when a write is done - pull the results and setup for the
+ next write, or close if the file is all done
+*/
+static NTSTATUS savefile_write(struct smbcli_composite *c,
+ struct smb_composite_savefile *io)
+{
+ union smb_write *io_write = c->req_parms;
+ struct smbcli_tree *tree = c->req->tree;
+ struct savefile_state *state = c->private;
+ NTSTATUS status;
+ uint32_t max_xmit = tree->session->transport->negotiate.max_xmit;
+
+ status = smb_raw_write_recv(c->req, io_write);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ state->total_written += io_write->writex.out.nwritten;
+
+ /* we might be done */
+ if (io_write->writex.out.nwritten != io_write->writex.in.count ||
+ state->total_written == io->in.size) {
+ return setup_close(c, tree, io_write->writex.in.fnum);
+ }
+
+ /* setup for the next write */
+ io_write->writex.in.offset = state->total_written;
+ io_write->writex.in.count = MIN(max_xmit - 100, io->in.size - state->total_written);
+ io_write->writex.in.data = io->in.data + state->total_written;
+
+ c->req = smb_raw_write_send(tree, io_write);
+ NT_STATUS_HAVE_NO_MEMORY(c->req);
+
+ /* call the handler again when the write is done */
+ c->req->async.fn = savefile_handler;
+ c->req->async.private = c;
+
+ return NT_STATUS_OK;
+}
+
+/*
+ called when the close is done, check the status and cleanup
+*/
+static NTSTATUS savefile_close(struct smbcli_composite *c,
+ struct smb_composite_savefile *io)
+{
+ NTSTATUS status;
+ struct savefile_state *state = c->private;
+
+ status = smbcli_request_simple_recv(c->req);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ if (state->total_written != io->in.size) {
+ return NT_STATUS_DISK_FULL;
+ }
+
+ c->state = SMBCLI_REQUEST_DONE;
+ if (c->async.fn) {
+ c->async.fn(c);
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ handler for completion of a sub-request in savefile
+*/
+static void savefile_handler(struct smbcli_request *req)
+{
+ struct smbcli_composite *c = req->async.private;
+ struct smb_composite_savefile *io = c->composite_parms;
+
+ /* when this handler is called, the stage indicates what
+ call has just finished */
+ switch (c->stage) {
+ case SAVEFILE_OPEN:
+ c->status = savefile_open(c, io);
+ break;
+
+ case SAVEFILE_WRITE:
+ c->status = savefile_write(c, io);
+ break;
+
+ case SAVEFILE_CLOSE:
+ c->status = savefile_close(c, io);
+ break;
+ }
+
+ if (!NT_STATUS_IS_OK(c->status)) {
+ c->state = SMBCLI_REQUEST_ERROR;
+ if (c->async.fn) {
+ c->async.fn(c);
+ }
+ }
+}
+
+/*
+ composite savefile call - does an openx followed by a number of writex calls,
+ followed by a close
+*/
+struct smbcli_composite *smb_composite_savefile_send(struct smbcli_tree *tree,
+ struct smb_composite_savefile *io)
+{
+ struct smbcli_composite *c;
+ union smb_open *io_open;
+ struct savefile_state *state;
+
+ c = talloc_zero(tree, struct smbcli_composite);
+ if (c == NULL) goto failed;
+
+ c->state = SMBCLI_REQUEST_SEND;
+ c->stage = SAVEFILE_OPEN;
+ c->composite_parms = io;
+
+ state = talloc(c, struct savefile_state);
+ if (state == NULL) goto failed;
+
+ state->total_written = 0;
+
+ /* setup for the open */
+ io_open = talloc_zero(c, union smb_open);
+ if (io_open == NULL) goto failed;
+
+ io_open->ntcreatex.level = RAW_OPEN_NTCREATEX;
+ io_open->ntcreatex.in.flags = NTCREATEX_FLAGS_EXTENDED;
+ io_open->ntcreatex.in.access_mask = SEC_FILE_WRITE_DATA;
+ io_open->ntcreatex.in.file_attr = FILE_ATTRIBUTE_NORMAL;
+ io_open->ntcreatex.in.share_access = NTCREATEX_SHARE_ACCESS_READ | NTCREATEX_SHARE_ACCESS_WRITE;
+ io_open->ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN_IF;
+ io_open->ntcreatex.in.impersonation = NTCREATEX_IMPERSONATION_ANONYMOUS;
+ io_open->ntcreatex.in.fname = io->in.fname;
+
+ /* send the open on its way */
+ c->req = smb_raw_open_send(tree, io_open);
+ if (c->req == NULL) goto failed;
+
+ /* setup the callback handler */
+ c->req->async.fn = savefile_handler;
+ c->req->async.private = c;
+ c->req_parms = io_open;
+ c->private = state;
+
+ return c;
+
+failed:
+ talloc_free(c);
+ return NULL;
+}
+
+
+/*
+ composite savefile call - recv side
+*/
+NTSTATUS smb_composite_savefile_recv(struct smbcli_composite *c)
+{
+ NTSTATUS status;
+ status = smb_composite_wait(c);
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ composite savefile call - sync interface
+*/
+NTSTATUS smb_composite_savefile(struct smbcli_tree *tree,
+ struct smb_composite_savefile *io)
+{
+ struct smbcli_composite *c = smb_composite_savefile_send(tree, io);
+ return smb_composite_savefile_recv(c);
+}
git.samba.org / samba.git / commitdiff