Class: Net::SSH::Authentication::Pageant::Socket19

Inherits:
Socket
  • Object
show all
Defined in:
lib/net/ssh/authentication/pageant.rb

Overview

Socket changes for Ruby 1.9 Functionality is the same as Ruby 1.8 but it includes the new calls to the DL module as well as other pointer transformations

Instance Method Summary collapse

Methods inherited from Socket

#close, #closed?, #initialize, open, #read, #send

Constructor Details

This class inherits a constructor from Net::SSH::Authentication::Pageant::Socket

Instance Method Details

#send_query(query) ⇒ Object

Packages the given query string and sends it to the pageant process via the Windows messaging subsystem. The result is cached, to be returned piece-wise when #read is called.



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# File 'lib/net/ssh/authentication/pageant.rb', line 204

def send_query(query)
  res = nil
  filemap = 0
  ptr = nil
  id = DL.malloc(DL::SIZEOF_LONG)

  mapname = "PageantRequest%08x\000" % Win.GetCurrentThreadId()

  filemap = Win.CreateFileMapping(Win::INVALID_HANDLE_VALUE, 
                                  Win::NULL,
                                  Win::PAGE_READWRITE, 0, 
                                  AGENT_MAX_MSGLEN, mapname)

  if filemap == 0 || filemap == Win::INVALID_HANDLE_VALUE
    raise Net::SSH::Exception,
      "Creation of file mapping failed"
  end

  ptr = Win.MapViewOfFile(filemap, Win::FILE_MAP_WRITE, 0, 0, 
                          0)

  if ptr.nil? || ptr.null?
    raise Net::SSH::Exception, "Mapping of file failed"
  end

  DL::CPtr.new(ptr)[0,query.size]=query

  cds = DL::CPtr.to_ptr [AGENT_COPYDATA_ID, mapname.size + 1, mapname].
    pack("LLp")
  succ = Win.SendMessageTimeout(@win, Win::WM_COPYDATA, Win::NULL,
                                cds, Win::SMTO_NORMAL, 5000, id)

  if succ > 0
    retlen = 4 + ptr.to_s(4).unpack("N")[0]
    res = ptr.to_s(retlen)
  end        

  return res
ensure
  Win.UnmapViewOfFile(ptr) unless ptr.nil? || ptr.null?
  Win.CloseHandle(filemap) if filemap != 0
end