diff options
Diffstat (limited to 'source3/smbd')
| -rw-r--r-- | source3/smbd/smb2_write.c | 176 |
1 files changed, 129 insertions, 47 deletions
diff --git a/source3/smbd/smb2_write.c b/source3/smbd/smb2_write.c index 99a9c40ef4..78b63dcaa6 100644 --- a/source3/smbd/smb2_write.c +++ b/source3/smbd/smb2_write.c @@ -22,22 +22,23 @@ #include "smbd/globals.h" #include "../source4/libcli/smb2/smb2_constants.h" -static NTSTATUS smbd_smb2_write(struct smbd_smb2_request *req, - uint32_t in_smbpid, - uint64_t in_file_id_volatile, - DATA_BLOB in_data, - uint64_t in_offset, - uint32_t in_flags, - uint32_t *out_count); - +static struct tevent_req *smbd_smb2_write_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbd_smb2_request *smb2req, + uint32_t in_smbpid, + uint64_t in_file_id_volatile, + DATA_BLOB in_data, + uint64_t in_offset, + uint32_t in_flags); +static NTSTATUS smbd_smb2_write_recv(struct tevent_req *req, + uint32_t *out_count); + +static void smbd_smb2_request_write_done(struct tevent_req *subreq); NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req) { const uint8_t *inhdr; const uint8_t *inbody; int i = req->current_idx; - uint8_t *outhdr; - DATA_BLOB outbody; - DATA_BLOB outdyn; size_t expected_body_size = 0x31; size_t body_size; uint32_t in_smbpid; @@ -48,8 +49,7 @@ NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req) uint64_t in_file_id_persistent; uint64_t in_file_id_volatile; uint32_t in_flags; - uint32_t out_count; - NTSTATUS status; + struct tevent_req *subreq; inhdr = (const uint8_t *)req->in.vector[i+0].iov_base; if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) { @@ -94,22 +94,54 @@ NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req) return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED); } - status = smbd_smb2_write(req, - in_smbpid, - in_file_id_volatile, - in_data_buffer, - in_offset, - in_flags, - &out_count); + subreq = smbd_smb2_write_send(req, + req->conn->smb2.event_ctx, + req, + in_smbpid, + in_file_id_volatile, + in_data_buffer, + in_offset, + in_flags); + if (subreq == NULL) { + return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY); + } + tevent_req_set_callback(subreq, smbd_smb2_request_write_done, req); + return NT_STATUS_OK; +} + +static void smbd_smb2_request_write_done(struct tevent_req *subreq) +{ + struct smbd_smb2_request *req = tevent_req_callback_data(subreq, + struct smbd_smb2_request); + int i = req->current_idx; + uint8_t *outhdr; + DATA_BLOB outbody; + DATA_BLOB outdyn; + uint32_t out_count; + NTSTATUS status; + NTSTATUS error; /* transport error */ + + status = smbd_smb2_write_recv(subreq, &out_count); + TALLOC_FREE(subreq); if (!NT_STATUS_IS_OK(status)) { - return smbd_smb2_request_error(req, status); + error = smbd_smb2_request_error(req, status); + if (!NT_STATUS_IS_OK(error)) { + smbd_server_connection_terminate(req->conn, + nt_errstr(error)); + return; + } } outhdr = (uint8_t *)req->out.vector[i].iov_base; outbody = data_blob_talloc(req->out.vector, NULL, 0x10); if (outbody.data == NULL) { - return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY); + error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY); + if (!NT_STATUS_IS_OK(error)) { + smbd_server_connection_terminate(req->conn, + nt_errstr(error)); + return; + } } SSVAL(outbody.data, 0x00, 0x10 + 1); /* struct size */ @@ -121,51 +153,77 @@ NTSTATUS smbd_smb2_request_process_write(struct smbd_smb2_request *req) outdyn = data_blob_const(NULL, 0); - return smbd_smb2_request_done(req, outbody, &outdyn); + error = smbd_smb2_request_done(req, outbody, &outdyn); + if (!NT_STATUS_IS_OK(error)) { + smbd_server_connection_terminate(req->conn, nt_errstr(error)); + return; + } } -static NTSTATUS smbd_smb2_write(struct smbd_smb2_request *req, - uint32_t in_smbpid, - uint64_t in_file_id_volatile, - DATA_BLOB in_data, - uint64_t in_offset, - uint32_t in_flags, - uint32_t *out_count) +struct smbd_smb2_write_state { + struct smbd_smb2_request *smb2req; + uint32_t in_length; + uint32_t out_count; +}; + +static struct tevent_req *smbd_smb2_write_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct smbd_smb2_request *smb2req, + uint32_t in_smbpid, + uint64_t in_file_id_volatile, + DATA_BLOB in_data, + uint64_t in_offset, + uint32_t in_flags) { NTSTATUS status; + struct tevent_req *req; + struct smbd_smb2_write_state *state; struct smb_request *smbreq; - connection_struct *conn = req->tcon->compat_conn; + connection_struct *conn = smb2req->tcon->compat_conn; files_struct *fsp; ssize_t nwritten; bool write_through = false; struct lock_struct lock; + req = tevent_req_create(mem_ctx, &state, + struct smbd_smb2_write_state); + if (req == NULL) { + return NULL; + } + state->smb2req = smb2req; + state->in_length = in_data.length; + state->out_count = 0; + DEBUG(10,("smbd_smb2_write: file_id[0x%016llX]\n", (unsigned long long)in_file_id_volatile)); - smbreq = smbd_smb2_fake_smb_request(req); - if (smbreq == NULL) { - return NT_STATUS_NO_MEMORY; - } - - /* If it's an IPC, pass off the pipe handler. */ - if (IS_IPC(conn)) { - return NT_STATUS_NOT_IMPLEMENTED; + smbreq = smbd_smb2_fake_smb_request(smb2req); + if (tevent_req_nomem(smbreq, req)) { + return tevent_req_post(req, ev); } fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile); if (fsp == NULL) { - return NT_STATUS_FILE_CLOSED; + tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); + return tevent_req_post(req, ev); } if (conn != fsp->conn) { - return NT_STATUS_FILE_CLOSED; + tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); + return tevent_req_post(req, ev); } - if (req->session->vuid != fsp->vuid) { - return NT_STATUS_FILE_CLOSED; + if (smb2req->session->vuid != fsp->vuid) { + tevent_req_nterror(req, NT_STATUS_FILE_CLOSED); + return tevent_req_post(req, ev); } if (!CHECK_WRITE(fsp)) { - return NT_STATUS_ACCESS_DENIED; + tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED); + return tevent_req_post(req, ev); + } + + if (IS_IPC(smbreq->conn)) { + tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED); + return tevent_req_post(req, ev); } init_strict_lock_struct(fsp, @@ -176,7 +234,8 @@ static NTSTATUS smbd_smb2_write(struct smbd_smb2_request *req, &lock); if (!SMB_VFS_STRICT_LOCK(conn, fsp, &lock)) { - return NT_STATUS_FILE_LOCK_CONFLICT; + tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT); + return tevent_req_post(req, ev); } nwritten = write_file(smbreq, fsp, @@ -188,7 +247,8 @@ static NTSTATUS smbd_smb2_write(struct smbd_smb2_request *req, DEBUG(5,("smbd_smb2_write: write_file[%s] disk full\n", fsp->fsp_name)); SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock); - return NT_STATUS_DISK_FULL; + tevent_req_nterror(req, NT_STATUS_DISK_FULL); + return tevent_req_post(req, ev); } DEBUG(3,("smbd_smb2_write: fnum=[%d/%s] length=%d offset=%d wrote=%d\n", @@ -204,10 +264,32 @@ static NTSTATUS smbd_smb2_write(struct smbd_smb2_request *req, DEBUG(5,("smbd_smb2_write: sync_file for %s returned %s\n", fsp->fsp_name, nt_errstr(status))); SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock); - return status; + tevent_req_nterror(req, status); + return tevent_req_post(req, ev); } SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock); + state->out_count = nwritten; + + tevent_req_done(req); + return tevent_req_post(req, ev); +} + +static NTSTATUS smbd_smb2_write_recv(struct tevent_req *req, + uint32_t *out_count) +{ + NTSTATUS status; + struct smbd_smb2_write_state *state = tevent_req_data(req, + struct smbd_smb2_write_state); + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + *out_count = state->out_count; + + tevent_req_received(req); return NT_STATUS_OK; } |