summaryrefslogtreecommitdiffstats
path: root/libcli/smb/smb2cli_create.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--libcli/smb/smb2cli_create.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/libcli/smb/smb2cli_create.c b/libcli/smb/smb2cli_create.c
new file mode 100644
index 0000000..325bc79
--- /dev/null
+++ b/libcli/smb/smb2cli_create.c
@@ -0,0 +1,321 @@
+/*
+ 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 "system/network.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "smb_common.h"
+#include "smbXcli_base.h"
+#include "smb2_create_blob.h"
+
+struct smb2cli_create_state {
+ uint8_t fixed[56];
+
+ uint64_t fid_persistent;
+ uint64_t fid_volatile;
+ struct smb_create_returns cr;
+ struct smb2_create_blobs blobs;
+ struct tevent_req *subreq;
+};
+
+static void smb2cli_create_done(struct tevent_req *subreq);
+static bool smb2cli_create_cancel(struct tevent_req *req);
+
+struct tevent_req *smb2cli_create_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXcli_conn *conn,
+ uint32_t timeout_msec,
+ struct smbXcli_session *session,
+ struct smbXcli_tcon *tcon,
+ 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;
+ size_t max_dyn_len;
+ uint32_t additional_flags = 0;
+ uint32_t clear_flags = 0;
+
+ 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),
+ &name_utf16, &name_utf16_len)) {
+ tevent_req_oom(req);
+ return tevent_req_post(req, ev);
+ }
+
+ if (strlen(filename) == 0) {
+ TALLOC_FREE(name_utf16);
+ name_utf16_len = 0;
+ }
+
+ 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(state, &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);
+
+ if (blob.length > 0) {
+ blobs_offset = ((blobs_offset + 7) & ~7);
+ SIVAL(fixed, 48, blobs_offset + SMB2_HDR_BODY + 56);
+ SIVAL(fixed, 52, blob.length);
+ }
+
+ dyn_len = MAX(1, 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);
+ }
+
+ if (name_utf16) {
+ memcpy(dyn, name_utf16, name_utf16_len);
+ TALLOC_FREE(name_utf16);
+ }
+
+ if (blob.data != NULL) {
+ memcpy(dyn + blobs_offset,
+ blob.data, blob.length);
+ data_blob_free(&blob);
+ }
+
+ if (smbXcli_conn_dfs_supported(conn) &&
+ smbXcli_tcon_is_dfs_share(tcon))
+ {
+ additional_flags |= SMB2_HDR_FLAG_DFS;
+ }
+
+ /*
+ * We use max_dyn_len = 0
+ * as we don't explicitly ask for any output length.
+ *
+ * But it's still possible for the server to return
+ * large create blobs.
+ */
+ max_dyn_len = 0;
+
+ subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_CREATE,
+ additional_flags, clear_flags,
+ timeout_msec,
+ tcon,
+ session,
+ state->fixed, sizeof(state->fixed),
+ dyn, dyn_len,
+ max_dyn_len);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smb2cli_create_done, req);
+
+ state->subreq = subreq;
+ tevent_req_set_cancel_fn(req, smb2cli_create_cancel);
+
+ return req;
+}
+
+static bool smb2cli_create_cancel(struct tevent_req *req)
+{
+ struct smb2cli_create_state *state = tevent_req_data(req,
+ struct smb2cli_create_state);
+ return tevent_req_cancel(state->subreq);
+}
+
+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;
+ static const struct smb2cli_req_expected_response expected[] = {
+ {
+ .status = NT_STATUS_OK,
+ .body_size = 0x59
+ }
+ };
+
+ status = smb2cli_req_recv(subreq, state, &iov,
+ expected, ARRAY_SIZE(expected));
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ body = (uint8_t *)iov[1].iov_base;
+
+ state->cr.oplock_level = CVAL(body, 2);
+ state->cr.create_action = IVAL(body, 4);
+ state->cr.creation_time = BVAL(body, 8);
+ state->cr.last_access_time = BVAL(body, 16);
+ state->cr.last_write_time = BVAL(body, 24);
+ state->cr.change_time = BVAL(body, 32);
+ state->cr.allocation_size = BVAL(body, 40);
+ state->cr.end_of_file = BVAL(body, 48);
+ state->cr.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 smb_create_returns *cr,
+ TALLOC_CTX *mem_ctx,
+ struct smb2_create_blobs *blobs)
+{
+ struct smb2cli_create_state *state =
+ tevent_req_data(req,
+ struct smb2cli_create_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ tevent_req_received(req);
+ return status;
+ }
+ *fid_persistent = state->fid_persistent;
+ *fid_volatile = state->fid_volatile;
+ if (cr) {
+ *cr = state->cr;
+ }
+ if (blobs) {
+ blobs->num_blobs = state->blobs.num_blobs;
+ blobs->blobs = talloc_move(mem_ctx, &state->blobs.blobs);
+ }
+ tevent_req_received(req);
+ return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_create(struct smbXcli_conn *conn,
+ uint32_t timeout_msec,
+ struct smbXcli_session *session,
+ struct smbXcli_tcon *tcon,
+ 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,
+ struct smb_create_returns *cr,
+ TALLOC_CTX *mem_ctx,
+ struct smb2_create_blobs *ret_blobs)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct tevent_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ if (smbXcli_conn_has_async_calls(conn)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+ ev = samba_tevent_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = smb2cli_create_send(frame, ev, conn, timeout_msec,
+ session, tcon,
+ 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, cr,
+ mem_ctx, ret_blobs);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}