s3:libsmb: add smb2cli_create*()

Based on the initial patch from Volker Lendecke <vl@samba.org>.

metze

2 files changed, 282 insertions, 0 deletions

diff --git a/source3/libsmb/smb2cli.h b/source3/libsmb/smb2cli.h
index 8eeeeac00f..86dc5b4363 100644
--- a/source3/libsmb/smb2cli.h
+++ b/source3/libsmb/smb2cli.h
@@ -55,4 +55,33 @@ struct tevent_req *smb2cli_tdis_send(TALLOC_CTX *mem_ctx,
 NTSTATUS smb2cli_tdis_recv(struct tevent_req *req);
 NTSTATUS smb2cli_tdis(struct cli_state *cli);
 
+struct tevent_req *smb2cli_create_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct cli_state *cli,
+	const char *filename,
+	uint8_t  oplock_level,		/* SMB2_OPLOCK_LEVEL_* */
+	uint32_t impersonation_level,	/* SMB2_IMPERSONATION_* */
+	uint32_t desired_access,
+	uint32_t file_attributes,
+	uint32_t share_access,
+	uint32_t create_disposition,
+	uint32_t create_options,
+	struct smb2_create_blobs *blobs);
+NTSTATUS smb2cli_create_recv(struct tevent_req *req,
+			     uint64_t *fid_persistent,
+			     uint64_t *fid_volatile);
+NTSTATUS smb2cli_create(struct cli_state *cli,
+			const char *filename,
+			uint8_t  oplock_level,	     /* SMB2_OPLOCK_LEVEL_* */
+			uint32_t impersonation_level, /* SMB2_IMPERSONATION_* */
+			uint32_t desired_access,
+			uint32_t file_attributes,
+			uint32_t share_access,
+			uint32_t create_disposition,
+			uint32_t create_options,
+			struct smb2_create_blobs *blobs,
+			uint64_t *fid_persistent,
+			uint64_t *fid_volatile);
+
 #endif /* __SMB2CLI_H__ */
diff --git a/source3/libsmb/smb2cli_create.c b/source3/libsmb/smb2cli_create.c
new file mode 100644
index 0000000000..bbec7b2051
--- /dev/null
+++ b/source3/libsmb/smb2cli_create.c
@@ -0,0 +1,253 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Volker Lendecke 2011
+
+   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/>.
+*/
+
+#include "includes.h"
+#include "client.h"
+#include "async_smb.h"
+#include "smb2cli_base.h"
+#include "smb2cli.h"
+#include "libsmb/proto.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "libcli/smb/smb2_create_blob.h"
+
+struct smb2cli_create_state {
+	uint8_t fixed[56];
+
+	uint8_t oplock_level;
+	uint32_t create_action;
+	struct timespec creation_time;
+	struct timespec last_access_time;
+	struct timespec last_write_time;
+	struct timespec change_time;
+	uint64_t allocation_size;
+	uint64_t end_of_file;
+	uint32_t file_attributes;
+	uint64_t fid_persistent;
+	uint64_t fid_volatile;
+	struct smb2_create_blobs blobs;
+};
+
+static void smb2cli_create_done(struct tevent_req *subreq);
+
+struct tevent_req *smb2cli_create_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct cli_state *cli,
+	const char *filename,
+	uint8_t  oplock_level,		/* SMB2_OPLOCK_LEVEL_* */
+	uint32_t impersonation_level,	/* SMB2_IMPERSONATION_* */
+	uint32_t desired_access,
+	uint32_t file_attributes,
+	uint32_t share_access,
+	uint32_t create_disposition,
+	uint32_t create_options,
+	struct smb2_create_blobs *blobs)
+{
+	struct tevent_req *req, *subreq;
+	struct smb2cli_create_state *state;
+	uint8_t *fixed;
+	uint8_t *name_utf16;
+	size_t name_utf16_len;
+	DATA_BLOB blob;
+	NTSTATUS status;
+	size_t blobs_offset;
+	uint8_t *dyn;
+	size_t dyn_len;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct smb2cli_create_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
+				   filename, strlen(filename)+1,
+				   &name_utf16, &name_utf16_len)) {
+		tevent_req_nomem(NULL, req);
+		return tevent_req_post(req, ev);
+	}
+
+	fixed = state->fixed;
+
+	SSVAL(fixed, 0, 57);
+	SCVAL(fixed, 3, oplock_level);
+	SIVAL(fixed, 4, impersonation_level);
+	SIVAL(fixed, 24, desired_access);
+	SIVAL(fixed, 28, file_attributes);
+	SIVAL(fixed, 32, share_access);
+	SIVAL(fixed, 36, create_disposition);
+	SIVAL(fixed, 40, create_options);
+
+	SSVAL(fixed, 44, SMB2_HDR_BODY + 56);
+	SSVAL(fixed, 46, name_utf16_len);
+
+	blob = data_blob_null;
+
+	if (blobs != NULL) {
+		status = smb2_create_blob_push(talloc_tos(), &blob, *blobs);
+		if (tevent_req_nterror(req, status)) {
+			return tevent_req_post(req, ev);
+		}
+	}
+
+	blobs_offset = name_utf16_len;
+	blobs_offset = ((blobs_offset + 3) & ~3);
+
+	SIVAL(fixed, 48, blobs_offset + SMB2_HDR_BODY + 56);
+	SIVAL(fixed, 52, blob.length);
+
+	dyn_len = blobs_offset + blob.length;
+	dyn = talloc_zero_array(state, uint8_t, dyn_len);
+	if (tevent_req_nomem(dyn, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	memcpy(dyn, name_utf16, name_utf16_len);
+	TALLOC_FREE(name_utf16);
+
+	if (blob.data != NULL) {
+		memcpy(dyn + blobs_offset - (SMB2_HDR_BODY + 56),
+		       blob.data, blob.length);
+		data_blob_free(&blob);
+	}
+
+	subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_CREATE, 0,
+				  state->fixed, sizeof(state->fixed),
+				  dyn, dyn_len);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, smb2cli_create_done, req);
+	return req;
+}
+
+static void smb2cli_create_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq,
+		struct tevent_req);
+	struct smb2cli_create_state *state =
+		tevent_req_data(req,
+		struct smb2cli_create_state);
+	NTSTATUS status;
+	struct iovec *iov;
+	uint8_t *body;
+	uint32_t offset, length;
+
+	status = smb2cli_req_recv(subreq, talloc_tos(), &iov, 89);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	body = (uint8_t *)iov[1].iov_base;
+
+	state->oplock_level	= CVAL(body, 2);
+	state->create_action	= IVAL(body, 4);
+	state->creation_time	= interpret_long_date((char *)body + 8);
+	state->last_access_time	= interpret_long_date((char *)body + 16);
+	state->last_write_time	= interpret_long_date((char *)body + 24);
+	state->change_time	= interpret_long_date((char *)body + 32);
+	state->allocation_size	= BVAL(body, 40);
+	state->end_of_file	= BVAL(body, 48);
+	state->file_attributes	= IVAL(body, 56);
+	state->fid_persistent	= BVAL(body, 64);
+	state->fid_volatile	= BVAL(body, 72);
+
+	offset = IVAL(body, 80);
+	length = IVAL(body, 84);
+
+	if ((offset != 0) && (length != 0)) {
+		if ((offset != SMB2_HDR_BODY + 88) ||
+		    (length > iov[2].iov_len)) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+		status = smb2_create_blob_parse(
+			state, data_blob_const(iov[2].iov_base, length),
+			&state->blobs);
+		if (tevent_req_nterror(req, status)) {
+			return;
+		}
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS smb2cli_create_recv(struct tevent_req *req,
+			     uint64_t *fid_persistent,
+			     uint64_t *fid_volatile)
+{
+	struct smb2cli_create_state *state =
+		tevent_req_data(req,
+		struct smb2cli_create_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*fid_persistent = state->fid_persistent;
+	*fid_volatile = state->fid_volatile;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_create(struct cli_state *cli,
+			const char *filename,
+			uint8_t  oplock_level,	     /* SMB2_OPLOCK_LEVEL_* */
+			uint32_t impersonation_level, /* SMB2_IMPERSONATION_* */
+			uint32_t desired_access,
+			uint32_t file_attributes,
+			uint32_t share_access,
+			uint32_t create_disposition,
+			uint32_t create_options,
+			struct smb2_create_blobs *blobs,
+			uint64_t *fid_persistent,
+			uint64_t *fid_volatile)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct event_context *ev;
+	struct tevent_req *req;
+	NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+	if (cli_has_async_calls(cli)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+	ev = event_context_init(frame);
+	if (ev == NULL) {
+		goto fail;
+	}
+	req = smb2cli_create_send(frame, ev, cli, filename, oplock_level,
+				  impersonation_level, desired_access,
+				  file_attributes, share_access,
+				  create_disposition, create_options,
+				  blobs);
+	if (req == NULL) {
+		goto fail;
+	}
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+	status = smb2cli_create_recv(req, fid_persistent, fid_volatile);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}