r4710: added a smb_composite_savefile() function, and expanded the test suite a little

(This used to be commit ef4dbc443dbdebc4160209ed3f23cbb97109c414)

4 files changed, 346 insertions, 11 deletions

diff --git a/source4/libcli/composite/composite.c b/source4/libcli/composite/composite.c
new file mode 100644
index 0000000000..f7e23cd4bc
--- /dev/null
+++ b/source4/libcli/composite/composite.c
@@ -0,0 +1,45 @@
+/* 
+   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.
+*/
+/*
+  composite API helper functions
+*/
+
+#include "includes.h"
+#include "libcli/raw/libcliraw.h"
+#include "libcli/composite/composite.h"
+
+
+/*
+  block until a composite function has completed, then return the status
+*/
+NTSTATUS smb_composite_wait(struct smbcli_composite *c)
+{
+	if (c == NULL) return NT_STATUS_NO_MEMORY;
+
+	while (c->state < SMBCLI_REQUEST_DONE) {
+		if (event_loop_once(c->req->transport->event.ctx) != 0) {
+			return NT_STATUS_UNSUCCESSFUL;
+		}
+	}
+
+	return c->status;
+}
+
+
diff --git a/source4/libcli/composite/composite.h b/source4/libcli/composite/composite.h
index 895c88a4f6..7b9477a942 100644
--- a/source4/libcli/composite/composite.h
+++ b/source4/libcli/composite/composite.h
@@ -45,6 +45,9 @@ struct smbcli_composite {
 	/* the parameters of the whole composite function */
 	void *composite_parms;
 
+	/* a private pointer for use by the composite code */
+	void *private;
+
 	/* status code when finished */
 	NTSTATUS status;
 
@@ -53,7 +56,6 @@ struct smbcli_composite {
 		void (*fn)(struct smbcli_composite *);
 		void *private;
 	} async;
-	
 };
 
 
@@ -70,3 +72,15 @@ struct smb_composite_loadfile {
 		uint32_t size;
 	} out;
 };
+
+/*
+  a composite open/write(s)/close request that saves a whole file from
+  memory. Used as a demo of the composite system.
+*/
+struct smb_composite_savefile {
+	struct {
+		const char *fname;
+		uint8_t *data;
+		uint32_t size;
+	} in;
+};
diff --git a/source4/libcli/composite/loadfile.c b/source4/libcli/composite/loadfile.c
index 1bf1fd5403..61260aa963 100644
--- a/source4/libcli/composite/loadfile.c
+++ b/source4/libcli/composite/loadfile.c
@@ -257,22 +257,14 @@ NTSTATUS smb_composite_loadfile_recv(struct smbcli_composite *c, TALLOC_CTX *mem
 {
 	NTSTATUS status;
 
-	if (!c) return NT_STATUS_NO_MEMORY;
+	status = smb_composite_wait(c);
 
-	while (c->state < SMBCLI_REQUEST_DONE) {
-		if (event_loop_once(c->req->transport->event.ctx) != 0) {
-			return NT_STATUS_UNSUCCESSFUL;
-		}
-	}
-
-	if (NT_STATUS_IS_OK(c->status)) {
+	if (NT_STATUS_IS_OK(status)) {
 		struct smb_composite_loadfile *io = c->composite_parms;
 		talloc_steal(mem_ctx, io->out.data);
 	}
 
-	status = c->status;
 	talloc_free(c);
-
 	return status;
 }
 
diff --git a/source4/libcli/composite/savefile.c b/source4/libcli/composite/savefile.c
new file mode 100644
index 0000000000..dc9ee2f9ec
--- /dev/null
+++ b/source4/libcli/composite/savefile.c
@@ -0,0 +1,284 @@
+/* 
+   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);
+}