Module: RubySMB::Server::Share::Provider::Disk::Processor::Read

Included in:
RubySMB::Server::Share::Provider::Disk::Processor
Defined in:
lib/ruby_smb/server/share/provider/disk/processor/read.rb

Instance Method Summary collapse

Instance Method Details

#do_read_andx_smb1(request) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/ruby_smb/server/share/provider/disk/processor/read.rb', line 10

def do_read_andx_smb1(request)
  # see: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-cifs/bb8fcb6a-3032-46a1-ad4a-c0d7892921f9
  handle = @handles[request.parameter_block.fid]

  if handle.nil? || handle.file.nil?
    response = SMB1::Packet::EmptyPacket.new
    response.smb_header.nt_status = WindowsError::NTStatus::STATUS_INVALID_HANDLE
    return response
  end

  handle.file.seek(request.parameter_block.offset.snapshot)
  buffer = handle.file.read(request.parameter_block.max_count_of_bytes_to_return.snapshot)

  response = SMB1::Packet::ReadAndxResponse.new
  response.parameter_block.available = 0xffff  # this field is only used for named pipes, must be -1 for all others
  unless buffer.nil?
    response.parameter_block.data_length = buffer.length
    response.parameter_block.data_offset = response.data_block.data.abs_offset
    response.data_block.data = buffer
  end
  response
end

#do_read_smb2(request) ⇒ Object

Raises:

  • (NotImplementedError) 


33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/ruby_smb/server/share/provider/disk/processor/read.rb', line 33

def do_read_smb2(request)
  handle = @handles[request.file_id.to_binary_s]
  if handle.nil?
    response = RubySMB::SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_FILE_CLOSED
    return response
  end

  if handle.file.nil?
    response = RubySMB::SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_INVALID_HANDLE
    return response
  end

  raise NotImplementedError unless request.channel == SMB2::SMB2_CHANNEL_NONE

  handle.file.seek(request.offset.snapshot)
  buffer = handle.file.read(request.read_length)

  # see: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-smb2/21e8b343-34e9-4fca-8d93-03dd2d3e961e
  if buffer.nil? || buffer.length == 0 || buffer.length < request.min_bytes
    response = SMB2::Packet::ErrorPacket.new
    response.smb2_header.nt_status = WindowsError::NTStatus::STATUS_END_OF_FILE
    return response
  end

  response = SMB2::Packet::ReadResponse.new
  response.data_length = buffer.length
  response.buffer = buffer
  response
end