Class: Dap::Filter::FilterDecodeHTTPReply

Inherits:
Object
  • Object
show all
Includes:
BaseDecoder
Defined in:
lib/dap/filter/http.rb

Instance Attribute Summary

Attributes included from Base

#name, #opts

Instance Method Summary collapse

Methods included from BaseDecoder

#process

Methods included from Base

#initialize, #process

Instance Method Details

#decode(data) ⇒ Object

TODO: Decode transfer-chunked responses



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# File 'lib/dap/filter/http.rb', line 138

def decode(data)
  lines = data.split(/\r?\n/)
  resp  = lines.shift
  save  = {}
  return save if resp !~ /^HTTP\/\d+\.\d+\s+(\d+)\s+(.*)/

  save["http_code"] = $1.to_i
  save["http_message"] = $2.strip
  save["http_raw_headers"] = {}

  clen = nil

  while lines.length > 0
    hline = lines.shift
    case hline
    when /^ETag:\s*(.*)/i
      save["http_etag"] = $1

    when /^Set-Cookie:\s*(.*)/i
      bits = $1.gsub(/\;?\s*path=.*/i, '').gsub(/\;?\s*expires=.*/i, '').gsub(/\;\s*HttpOnly.*/, '')
      save["http_cookie"] = bits.strip

    when /^Server:\s*(.*)/i
      save["http_server"] = $1.strip

    when /^X-Powered-By:\s*(.*)/i
      save["http_powered"] = $1.strip

    when /^Date:\s*(.*)/i
      d = DateTime.parse($1.strip) rescue nil
      save["http_date"] = d.to_time.strftime("%Y%m%dT%H:%M:%S") if d

    when /^Last-modified:\s*(.*)/i
      d = DateTime.parse($1.strip) rescue nil
      save["http_modified"] = d.to_time.strftime("%Y%m%dT%H:%M:%S") if d

    when /^Location:\s*(.*)/i
      save["http_location"] = $1.strip

    when /^WWW-Authenticate:\s*(.*)/i
      save["http_auth"] = $1.strip

    when /^Content-Length:\s*(.*)/i
      clen = $1.strip.to_i

    when /^([A-Za-z0-9\-]+):\s*(.*)/i
      save["http_raw_headers"][$1.downcase.strip] = $2.strip

    when ""
      break
    end
  end

  head, body = data.split(/\r?\n\r?\n/, 2)

  # Some buggy systems exclude the header entirely
  body ||= head

  if save["http_raw_headers"]["content-encoding"] == "gzip"
    begin
      gunzip = Zlib::GzipReader.new(StringIO.new(body))
      body = gunzip.read.encode('UTF-8', :invalid=>:replace, :replace=>'?')
      gunzip.close()
    rescue
    end
  end
  save["http_body"] = body

  if body =~ /<title>([^>]+)</mi
    save["http_title"] = $1.strip
  end

  save
end