Class: HrrRbSftp::Protocol::Version1::Packet::SSH_FXP_OPEN

Inherits:
Object
  • Object
show all
Includes:
Common::Packetable
Defined in:
lib/hrr_rb_sftp/protocol/version1/packet/003_ssh_fxp_open.rb

Defined Under Namespace

Classes: Error

Constant Summary collapse

TYPE = 
3
FORMAT = 
[
  [DataType::Byte,   :"type"      ],
  [DataType::Uint32, :"request-id"],
  [DataType::String, :"filename"  ],
  [DataType::Uint32, :"pflags"    ],
  [DataType::Attrs,  :"attrs"     ],
]
SSH_FXF_READ = 
0x00000001
SSH_FXF_WRITE = 
0x00000002
SSH_FXF_APPEND = 
0x00000004
SSH_FXF_CREAT = 
0x00000008
SSH_FXF_TRUNC = 
0x00000010
SSH_FXF_EXCL = 
0x00000020

Instance Attribute Summary

Attributes included from Loggable

#logger

Instance Method Summary collapse

Methods included from Common::Packetable

#decode, #encode, #initialize

Methods included from Loggable

#log_debug, #log_error, #log_fatal, #log_info, #log_warn

Instance Method Details

#convert_pflags_to_flags(pflags) ⇒ Object 



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# File 'lib/hrr_rb_sftp/protocol/version1/packet/003_ssh_fxp_open.rb', line 28

def convert_pflags_to_flags pflags
  flags = 0
  if ((pflags & SSH_FXF_READ) == SSH_FXF_READ) && ((pflags & SSH_FXF_WRITE) == SSH_FXF_WRITE)
    flags |= ::File::RDWR
  elsif (pflags & SSH_FXF_READ) == SSH_FXF_READ
    flags |= ::File::RDONLY
  elsif (pflags & SSH_FXF_WRITE) == SSH_FXF_WRITE
    flags |= ::File::WRONLY
  else
    raise Error, "At least SSH_FXF_READ or SSH_FXF_READ must be specified"
  end
  if (pflags & SSH_FXF_APPEND) == SSH_FXF_APPEND
    flags |= ::File::APPEND
  end
  if (pflags & SSH_FXF_CREAT) == SSH_FXF_CREAT
    flags |= ::File::CREAT
    flags |= ::File::TRUNC if (pflags & SSH_FXF_TRUNC) == SSH_FXF_TRUNC
    flags |= ::File::EXCL  if (pflags & SSH_FXF_EXCL ) == SSH_FXF_EXCL
  elsif (pflags & SSH_FXF_TRUNC) == SSH_FXF_TRUNC
    raise Error, "SSH_FXF_CREAT MUST also be specified when SSH_FXF_TRUNC is specified"
  elsif (pflags & SSH_FXF_EXCL) == SSH_FXF_EXCL
    raise Error, "SSH_FXF_CREAT MUST also be specified when SSH_FXF_EXCL is specified"
  end
  flags |= ::File::BINARY
  flags
end

#respond_to(request) ⇒ Object 



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# File 'lib/hrr_rb_sftp/protocol/version1/packet/003_ssh_fxp_open.rb', line 55

def respond_to request
  begin
    flags = convert_pflags_to_flags request[:"pflags"]
    args = [request[:"filename"], flags]
    if request[:"attrs"].has_key?(:"permissions")
      args.push request[:"attrs"][:"permissions"]
    end
    file = ::File.open(*args)
    handle = file.object_id.to_s(16)
    @handles[handle] = file
    {
      :"type"       => SSH_FXP_HANDLE::TYPE,
      :"request-id" => request[:"request-id"],
      :"handle"     => handle,
    }
  rescue Error => e
    {
      :"type"          => SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => SSH_FXP_STATUS::SSH_FX_FAILURE,
      :"error message" => e.message,
      :"language tag"  => "",
    }
  rescue Errno::ENOENT
    {
      :"type"          => SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => SSH_FXP_STATUS::SSH_FX_NO_SUCH_FILE,
      :"error message" => "No such file or directory",
      :"language tag"  => "",
    }
  rescue Errno::EACCES
    {
      :"type"          => SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => 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"          => SSH_FXP_STATUS::TYPE,
      :"request-id"    => request[:"request-id"],
      :"code"          => SSH_FXP_STATUS::SSH_FX_FAILURE,
      :"error message" => e.message,
      :"language tag"  => "",
    }
  end
end