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Module: WEBrick::HTTPUtils

Relationships & Source Files
Namespace Children
Classes:
FormData
Defined in: lib/webrick/httputils.rb

Overview

HTTPUtils provides utility methods for working with the HTTP protocol.

This module is generally used internally by ::WEBrick

Constant Summary

  • DefaultMimeTypes =

    Default mime types

    # File 'lib/webrick/httputils.rb', line 47 
    {
  "ai"    => "application/postscript",
  "asc"   => "text/plain",
  "avi"   => "video/x-msvideo",
  "bin"   => "application/octet-stream",
  "bmp"   => "image/bmp",
  "class" => "application/octet-stream",
  "cer"   => "application/pkix-cert",
  "crl"   => "application/pkix-crl",
  "crt"   => "application/x-x509-ca-cert",
 #"crl"   => "application/x-pkcs7-crl",
  "css"   => "text/css",
  "dms"   => "application/octet-stream",
  "doc"   => "application/msword",
  "dvi"   => "application/x-dvi",
  "eps"   => "application/postscript",
  "etx"   => "text/x-setext",
  "exe"   => "application/octet-stream",
  "gif"   => "image/gif",
  "htm"   => "text/html",
  "html"  => "text/html",
  "jpe"   => "image/jpeg",
  "jpeg"  => "image/jpeg",
  "jpg"   => "image/jpeg",
  "js"    => "application/javascript",
  "lha"   => "application/octet-stream",
  "lzh"   => "application/octet-stream",
  "mov"   => "video/quicktime",
  "mpe"   => "video/mpeg",
  "mpeg"  => "video/mpeg",
  "mpg"   => "video/mpeg",
  "pbm"   => "image/x-portable-bitmap",
  "pdf"   => "application/pdf",
  "pgm"   => "image/x-portable-graymap",
  "png"   => "image/png",
  "pnm"   => "image/x-portable-anymap",
  "ppm"   => "image/x-portable-pixmap",
  "ppt"   => "application/vnd.ms-powerpoint",
  "ps"    => "application/postscript",
  "qt"    => "video/quicktime",
  "ras"   => "image/x-cmu-raster",
  "rb"    => "text/plain",
  "rd"    => "text/plain",
  "rtf"   => "application/rtf",
  "sgm"   => "text/sgml",
  "sgml"  => "text/sgml",
  "svg"   => "image/svg+xml",
  "tif"   => "image/tiff",
  "tiff"  => "image/tiff",
  "txt"   => "text/plain",
  "xbm"   => "image/x-xbitmap",
  "xhtml" => "text/html",
  "xls"   => "application/vnd.ms-excel",
  "xml"   => "text/xml",
  "xpm"   => "image/x-xpixmap",
  "xwd"   => "image/x-xwindowdump",
  "zip"   => "application/zip",
}

Class Method Summary

Class Method Details

.dequote(str) (mod_func)

Removes quotes and escapes from str

[ GitHub ] 

  


# File 'lib/webrick/httputils.rb', line 221



def dequote(str)
  ret = (/\A"(.*)"\Z/ =~ str) ? $1 : str.dup
  ret.gsub!(/\\(.)/, "\\1")
  ret
end


  








  

    .escape(str)   (mod_func)
  



  

    

Escapes HTTP reserved and unwise characters in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 465



def escape(str)
  _escape(str, UNESCAPED)
end


  








  

    .escape8bit(str)   (mod_func)
  



  

    

Escapes 8 bit characters in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 506



def escape8bit(str)
  _escape(str, NONASCII)
end


  








  

    .escape_form(str)   (mod_func)
  



  

    

Escapes form reserved characters in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 479



def escape_form(str)
  ret = _escape(str, UNESCAPED_FORM)
  ret.gsub!(/ /, "+")
  ret
end


  








  

    .escape_path(str)   (mod_func)
  



  

    

Escapes path str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 495



def escape_path(str)
  result = ""
  str.scan(%r{/([^/]*)}).each{|i|
    result << "/" << _escape(i[0], UNESCAPED_PCHAR)
  }
  return result
end


  








  

    .load_mime_types(file)   (mod_func)
  



  

    

Loads Apache-compatible mime.types in file.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 109



def load_mime_types(file)
  open(file){ |io|
    hash = Hash.new
    io.each{ |line|
      next if /^#/ =~ line
      line.chomp!
      mimetype, ext0 = line.split(/\s+/, 2)
      next unless ext0
      next if ext0.empty?
      ext0.split(/\s+/).each{ |ext| hash[ext] = mimetype }
    }
    hash
  }
end


  








  

    .mime_type(filename, mime_tab)   (mod_func)
  



  

    

Returns the mime type of filename from the list in mime_tab.  If no mime type was found application/octet-stream is returned.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 129



def mime_type(filename, mime_tab)
  suffix1 = (/\.(\w+)$/ =~ filename && $1.downcase)
  suffix2 = (/\.(\w)\.[\w\-]$/ =~ filename && $1.downcase)
  mime_tab[suffix1] || mime_tab[suffix2] || "application/octet-stream"
end


  








  

    .normalize_path(path)   (mod_func)
  



  

    

Normalizes a request path.  Raises an exception if the path cannot be normalized.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 31



def normalize_path(path)
  raise "abnormal path `#{path}'" if path[0] != ?/
  ret = path.dup

  ret.gsub!(%r{/+}o, '/')                    # //      => /
  while ret.sub!(%r'/\.(?:/|\Z)', '/'); end  # /.      => /
  while ret.sub!(%r'/(?!\.\./)[^/]+/\.\.(?:/|\Z)', '/'); end # /foo/.. => /foo

  raise "abnormal path `#{path}'" if %r{/\.\.(/|\Z)} =~ ret
  ret
end


  








  

    .parse_form_data(io, boundary)   (mod_func)
  



  

    

Parses form data in io with the given boundary


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 393



def parse_form_data(io, boundary)
  boundary_regexp = /\A--#{Regexp.quote(boundary)}(--)?#{CRLF}\z/
  form_data = Hash.new
  return form_data unless io
  data = nil
  io.each_line{|line|
    if boundary_regexp =~ line
      if data
        data.chop!
        key = data.name
        if form_data.has_key?(key)
          form_data[key].append_data(data)
        else
          form_data[key] = data
        end
      end
      data = FormData.new
      next
    else
      if data
        data << line
      end
    end
  }
  return form_data
end


  








  

    .parse_header(raw)   (mod_func)
  



  

    

Parses an HTTP header raw into a hash of header fields with an Array of values.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 140



def parse_header(raw)
  header = Hash.new([].freeze)
  field = nil
  raw.each_line{|line|
    case line
    when /^([A-Za-z0-9!\#$%&'*\-.^_`|~]):\s*(.*?)\s*\z/om
      field, value = $1, $2
      field.downcase!
      header[field] = [] unless header.has_key?(field)
      header[field] << value
    when /^\s+(.*?)\s*\z/om
      value = $1
      unless field
        raise HTTPStatus::BadRequest, "bad header '#{line}'."
      end
      header[field][-1] << " " << value
    else
      raise HTTPStatus::BadRequest, "bad header '#{line}'."
    end
  }
  header.each{|key, values|
    values.each{|value|
      value.strip!
      value.gsub!(/\s+/, " ")
    }
  }
  header
end


  








  

    .parse_query(str)   (mod_func)
  



  

    

Parses the query component of a URI in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 369



def parse_query(str)
  query = Hash.new
  if str
    str.split(/[&;]/).each{|x|
      next if x.empty?
      key, val = x.split(/=/,2)
      key = unescape_form(key)
      val = unescape_form(val.to_s)
      val = FormData.new(val)
      val.name = key
      if query.has_key?(key)
        query[key].append_data(val)
        next
      end
      query[key] = val
    }
  end
  query
end


  








  

    .parse_qvalues(value)   (mod_func)
  



  

    

Parses q values in value as used in Accept headers.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 200



def parse_qvalues(value)
  tmp = []
  if value
    parts = value.split(/,\s*/)
    parts.each {|part|
      if m = %r{^([^\s,]?)(?:;\s*q=(\d(?:\.\d+)?))?$}.match(part)
        val = m[1]
        q = (m[2] or 1).to_f
        tmp.push([val, q])
      end
    }
    tmp = tmp.sort_by{|val, q| -q}
    tmp.collect!{|val, q| val}
  end
  return tmp
end


  








  

    .parse_range_header(ranges_specifier)   (mod_func)
  



  

    

Parses a Range header value ranges_specifier


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 182



def parse_range_header(ranges_specifier)
  if /^bytes=(.*)/ =~ ranges_specifier
    byte_range_set = split_header_value($1)
    byte_range_set.collect{|range_spec|
      case range_spec
      when /^(\d)-(\d)/ then $1.to_i .. $2.to_i
      when /^(\d+)-/      then $1.to_i .. -1
      when /^-(\d+)/      then -($1.to_i) .. -1
      else return nil
      end
    }
  end
end


  








  

    .quote(str)   (mod_func)
  



  

    

Quotes and escapes quotes in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 231



def quote(str)
  '"' << str.gsub(/[\\\"]/o, "\\\1") << '"'
end


  








  

    .split_header_value(str)   (mod_func)
  



  

    

Splits a header value str according to HTTP specification.


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 173



def split_header_value(str)
  str.scan(%r'\G((?:"(?:\\.|[^"])?"|[^",])+)
                (?:,\s*|\Z)'xn).flatten
end


  








  

    .unescape(str)   (mod_func)
  



  

    

Unescapes HTTP reserved and unwise characters in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 472



def unescape(str)
  _unescape(str, ESCAPED)
end


  








  

    .unescape_form(str)   (mod_func)
  



  

    

Unescapes form reserved characters in str


  



  [ GitHub ]


  

  


# File 'lib/webrick/httputils.rb', line 488



def unescape_form(str)
  _unescape(str.gsub(/\+/, " "), ESCAPED)
end