NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req)
{
NTSTATUS status;
const uint8_t *inhdr;
const uint8_t *inbody;
int i = req->current_idx;
uint32_t in_smbpid;
uint32_t in_length;
uint64_t in_offset;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
uint32_t in_minimum_count;
uint32_t in_remaining_bytes;
struct tevent_req *subreq;
status = smbd_smb2_request_verify_sizes(req, 0x31);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
in_smbpid = IVAL(inhdr, SMB2_HDR_PID);
in_length = IVAL(inbody, 0x04);
in_offset = BVAL(inbody, 0x08);
in_file_id_persistent = BVAL(inbody, 0x10);
in_file_id_volatile = BVAL(inbody, 0x18);
in_minimum_count = IVAL(inbody, 0x20);
in_remaining_bytes = IVAL(inbody, 0x28);
/* check the max read size */
if (in_length > lp_smb2_max_read()) {
DEBUG(0,("here:%s: 0x%08X: 0x%08X\n",
__location__, in_length, lp_smb2_max_read()));
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
if (req->compat_chain_fsp) {
/* skip check */
} else if (in_file_id_persistent != in_file_id_volatile) {
return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
}
subreq = smbd_smb2_read_send(req,
req->sconn->smb2.event_ctx,
req,
in_smbpid,
in_file_id_volatile,
in_length,
in_offset,
in_minimum_count,
in_remaining_bytes);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
return smbd_smb2_request_pending_queue(req, subreq);
}
NTSTATUS smbd_smb2_request_process_read(struct smbd_smb2_request *req)
{
struct smbXsrv_connection *xconn = req->xconn;
NTSTATUS status;
const uint8_t *inbody;
uint32_t in_length;
uint64_t in_offset;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
struct files_struct *in_fsp;
uint32_t in_minimum_count;
uint32_t in_remaining_bytes;
struct tevent_req *subreq;
status = smbd_smb2_request_verify_sizes(req, 0x31);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
inbody = SMBD_SMB2_IN_BODY_PTR(req);
in_length = IVAL(inbody, 0x04);
in_offset = BVAL(inbody, 0x08);
in_file_id_persistent = BVAL(inbody, 0x10);
in_file_id_volatile = BVAL(inbody, 0x18);
in_minimum_count = IVAL(inbody, 0x20);
in_remaining_bytes = IVAL(inbody, 0x28);
/* check the max read size */
if (in_length > xconn->smb2.server.max_read) {
DEBUG(2,("smbd_smb2_request_process_read: "
"client ignored max read: %s: 0x%08X: 0x%08X\n",
__location__, in_length, xconn->smb2.server.max_read));
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
status = smbd_smb2_request_verify_creditcharge(req, in_length);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
if (in_fsp == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
}
subreq = smbd_smb2_read_send(req, req->sconn->ev_ctx,
req, in_fsp,
in_length,
in_offset,
in_minimum_count,
in_remaining_bytes);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
return smbd_smb2_request_pending_queue(req, subreq, 500);
}