Method: Spider::HTTP.parse_multipart

Defined in:
lib/spiderfw/http/http.rb

.parse_multipart(request, boundary, content_length) ⇒ Object

Parameters

request<IO>

The raw request.

boundary<String>

The boundary string.

content_length<Fixnum>

The length of the content.

Raises

ControllerExceptions::MultiPartParseError

Failed to parse request.

Returns

Hash

The parsed request.

– from Merb

Raises:

  • (ArgumentError) 


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# File 'lib/spiderfw/http/http.rb', line 240

def self.parse_multipart(request, boundary, content_length)
  boundary = "--#{boundary}"
  paramhsh = {}
  buf = ""
  input = request
  input.binmode if defined? input.binmode
  boundary_size = boundary.size + EOL.size
  bufsize = 16384
  content_length -= boundary_size
  status = input.read(boundary_size)
  raise ArgumentError, "bad content body:\n'#{status}' should == '#{boundary + EOL}'"  unless status == boundary + EOL
  rx = /(?:#{EOL})?#{Regexp.quote(boundary,'n')}(#{EOL}|--)/
  files = []
  loop {
    head = nil
    body = ''
    filename = content_type = name = nil
    read_size = 0
    until head && buf =~ rx
      i = buf.index("\r\n\r\n")
      if( i == nil && read_size == 0 && content_length == 0 )
        content_length = -1
        break
      end
      if !head && i
        head = buf.slice!(0, i+2) # First \r\n
        buf.slice!(0, 2)          # Second \r\n
        filename = head[FILENAME_REGEX, 1]
        content_type = head[CONTENT_TYPE_REGEX, 1]
        name = head[NAME_REGEX, 1]

        if filename && !filename.empty?
          body = UploadedFile.new(filename, content_type)
        end
        next
      end

      # Save the read body part.
      if head && (boundary_size+4 < buf.size)
        body << buf.slice!(0, buf.size - (boundary_size+4))
      end

      read_size = bufsize < content_length ? bufsize : content_length
      if( read_size > 0 )
        c = input.read(read_size)
        raise ArgumentError, "bad content body"  if c.nil? || c.empty?
        buf << c
        content_length -= c.size
      end
    end

    # Save the rest.
    if i = buf.index(rx)
      body << buf.slice!(0, i)
      buf.slice!(0, boundary_size+2)

      content_length = -1  if $1 == "--"
    end

    if filename && !filename.empty?
        body.rewind
        files << body
    end
    data = body
    paramhsh = normalize_params(paramhsh,name,data)
    break  if buf.empty? || content_length == -1
  }
  [paramhsh, files]
end