webapp - web interface adapter

About

webapp is a server side web interface for various services: CGI, FastCGI, mod_ruby and WEBrick.

Home Page

http://www.a-k-r.org/webapp/

Author

Tanaka Akira <akr@fsij.org>

Feature

• very easy-to-use API
• works under CGI, FastCGI and mod_ruby without modification
• works under WEBrick (WEBrick based server must require "webapp/webrick-servlet", though.)
• works as a standalone http server without modification

• works as usual command (CLI) for debugging and static content generation.

  xxx.cgi [options] [/path_info] [?query_string]

• path_info aware relative URI generation
• HTML form parameter validation by HTML form (sample/query.cgi)
• automatic Content-Type generation
• a web application can be used as a web site with WEBrick (URL will be http://host/path_info?query. No path component to specify a web application.)
• a response is gzipped automatically if the browser accepts.
• Last-Modified: and If-Modified-Since: support for usual files.

Download

• latest release: webapp-0.4.tar.gz (sha256)
• development version: https://github.com/akr/webapp

Install

% ruby install.rb

To see the list of files to install: ruby install.rb -n

Reference Manual

See rdoc/.

Example

Hello World

The script follows works under CGI, FastCGI and mod_ruby without modification. (Although it depends on web server configuration, the filename of the script should be "hello.cgi", "hello.fcgi" or "hello.rbx".)

#!/usr/bin/env ruby
require 'webapp'
WebApp {|webapp|
  webapp.puts "Hello World."
}

The script also works under WEBrick based server such as follows. In this case, the script filename should be "hello.webrick".

require 'webapp/webrick-servlet'
httpd = WEBrick::HTTPServer.new(:DocumentRoot => Dir.getwd, :Port => 10080)
trap(:INT){ httpd.shutdown }
httpd.start 

The script also works as usual command. It can be used for debugging and static content generation.

% ./hello.cgi 
Status: 200 OK
Content-Type: text/plain
Content-Length: 13

Hello World.

The script also works as a standalone http server.

% ./hello.cgi server
http://serein:38846/
[2005-02-19 10:29:26] INFO  WEBrick 1.3.1
[2005-02-19 10:29:26] INFO  ruby 1.9.0 (2005-02-17) [i686-linux]
[2005-02-19 10:29:26] INFO  WEBrick::HTTPServer#start: pid=9280 port=38846
...

Requirements

• Ruby 1.8.2
• htree 0.2
• fcgi 0.8.4 (if you use FastCGI)
• mod_ruby 1.2.2 (if you use mod_ruby)

License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this

list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,

this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

3. The name of the author may not be used to endorse or promote products

derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

(The modified BSD license)