diff options
Diffstat (limited to 'libcli/smb/smb2cli_write.c')
| -rw-r--r-- | libcli/smb/smb2cli_write.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/libcli/smb/smb2cli_write.c b/libcli/smb/smb2cli_write.c new file mode 100644 index 0000000..6d0a0aa --- /dev/null +++ b/libcli/smb/smb2cli_write.c @@ -0,0 +1,183 @@ +/* + 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" + +struct smb2cli_write_state { + uint8_t fixed[48]; + uint8_t dyn_pad[1]; + uint32_t written; +}; + +static void smb2cli_write_done(struct tevent_req *subreq); + +struct tevent_req *smb2cli_write_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, + uint32_t length, + uint64_t offset, + uint64_t fid_persistent, + uint64_t fid_volatile, + uint32_t remaining_bytes, + uint32_t flags, + const uint8_t *data) +{ + struct tevent_req *req, *subreq; + struct smb2cli_write_state *state; + uint8_t *fixed; + const uint8_t *dyn; + size_t dyn_len; + + req = tevent_req_create(mem_ctx, &state, + struct smb2cli_write_state); + if (req == NULL) { + return NULL; + } + + fixed = state->fixed; + + SSVAL(fixed, 0, 49); + SSVAL(fixed, 2, SMB2_HDR_BODY + 48); + SIVAL(fixed, 4, length); + SBVAL(fixed, 8, offset); + SBVAL(fixed, 16, fid_persistent); + SBVAL(fixed, 24, fid_volatile); + SIVAL(fixed, 36, remaining_bytes); + SIVAL(fixed, 44, flags); + + if (length > 0) { + dyn = data; + dyn_len = length; + } else { + dyn = state->dyn_pad;; + dyn_len = sizeof(state->dyn_pad); + } + + subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_WRITE, + 0, 0, /* flags */ + timeout_msec, + tcon, + session, + state->fixed, sizeof(state->fixed), + dyn, dyn_len, + 0); /* max_dyn_len */ + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, smb2cli_write_done, req); + return req; +} + +static void smb2cli_write_done(struct tevent_req *subreq) +{ + struct tevent_req *req = + tevent_req_callback_data(subreq, + struct tevent_req); + struct smb2cli_write_state *state = + tevent_req_data(req, + struct smb2cli_write_state); + NTSTATUS status; + struct iovec *iov; + static const struct smb2cli_req_expected_response expected[] = { + { + .status = NT_STATUS_OK, + .body_size = 0x11 + } + }; + + status = smb2cli_req_recv(subreq, state, &iov, + expected, ARRAY_SIZE(expected)); + TALLOC_FREE(subreq); + if (tevent_req_nterror(req, status)) { + return; + } + state->written = IVAL(iov[1].iov_base, 4); + tevent_req_done(req); +} + +NTSTATUS smb2cli_write_recv(struct tevent_req *req, uint32_t *written) +{ + struct smb2cli_write_state *state = + tevent_req_data(req, + struct smb2cli_write_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + if (written) { + *written = state->written; + } + tevent_req_received(req); + return NT_STATUS_OK; +} + +NTSTATUS smb2cli_write(struct smbXcli_conn *conn, + uint32_t timeout_msec, + struct smbXcli_session *session, + struct smbXcli_tcon *tcon, + uint32_t length, + uint64_t offset, + uint64_t fid_persistent, + uint64_t fid_volatile, + uint32_t remaining_bytes, + uint32_t flags, + const uint8_t *data, + uint32_t *written) +{ + 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_write_send(frame, ev, conn, timeout_msec, + session, tcon, + length, offset, + fid_persistent, fid_volatile, + remaining_bytes, flags, data); + if (req == NULL) { + goto fail; + } + if (!tevent_req_poll_ntstatus(req, ev, &status)) { + goto fail; + } + status = smb2cli_write_recv(req, written); + fail: + TALLOC_FREE(frame); + return status; +} |