Class: HrrRbSftp::Protocol::Version3::Packets::SSH_FXP_READLINK

Inherits:
Packets::Packet
  • Object
show all
Defined in:
lib/hrr_rb_sftp/protocol/version3/packets/019_ssh_fxp_readlink.rb

Overview

This class implements SFTP protocol version 1 SSH_FXP_READLINK packet type, format, and responder.

Constant Summary collapse

TYPE =

Represents SSH_FXP_READLINK packet type.

19
FORMAT =

Represents SSH_FXP_READLINK packet format.

[
  [DataTypes::Byte,   :"type"      ],
  [DataTypes::Uint32, :"request-id"],
  [DataTypes::String, :"path"      ],
]

Instance Method Summary collapse

Instance Method Details

#respond_to(request) ⇒ Hash{Symbol=>Object}

Responds to SSH_FXP_READLINK request.

Parameters:

  • request (Hash{Symbol=>Object}) —

    SSH_FXP_READLINK request represented in Hash.

Returns:

  • (Hash{Symbol=>Object}) —

    Response represented in Hash. In case of success, its type is SSH_FXP_NAME. In other cases, its type is SSH_FXP_STATUS.



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# File 'lib/hrr_rb_sftp/protocol/version3/packets/019_ssh_fxp_readlink.rb', line 31

def respond_to request
  begin
    log_debug { "realpath = File.realpath(#{request[:"path"].inspect})" }
    realpath = File.realpath(request[:"path"])
    {
      :"type"        => Packets::SSH_FXP_NAME::TYPE,
      :"request-id"  => request[:"request-id"],
      :"count"       => 1,
      :"filename[0]" => realpath,
      :"longname[0]" => realpath,
      :"attrs[0]"    => {},
    }
  rescue Errno::ENOENT => e
    log_debug { e.message }
    {
      :"type"          => Packets::SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => Packets::SSH_FXP_STATUS::SSH_FX_NO_SUCH_FILE,
      :"error message" => "No such file or directory",
      :"language tag"  => "",
    }
  rescue Errno::EACCES => e
    log_debug { e.message }
    {
      :"type"          => Packets::SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => Packets::SSH_FXP_STATUS::SSH_FX_PERMISSION_DENIED,
      :"error message" => "Permission denied",
      :"language tag"  => "",
    }
  rescue => e
    log_error { [e.backtrace[0], ": ", e.message, " (", e.class.to_s, ")\n\t", e.backtrace[1..-1].join("\n\t")].join }
    {
      :"type"          => Packets::SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => Packets::SSH_FXP_STATUS::SSH_FX_FAILURE,
      :"error message" => e.message,
      :"language tag"  => "",
    }
  end
end