python/samba/web_server/__init__.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # Unix SMB/CIFS implementation.
   4 # Copyright © Jelmer Vernooij <jelmer@samba.org> 2008
   5 #
   6 # Implementation of SWAT that uses WSGI
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 def render_placeholder(environ, start_response):
  23     """Send the user a simple placeholder about missing SWAT."""
  24     status = '200 OK'
  25     response_headers = [('Content-type', 'text/html')]
  26     start_response(status, response_headers)
  27
  28     yield "<!doctype html>\n"
  29     yield "<html>\n"
  30     yield "  <title>The Samba web service</title>\n"
  31     yield "</html>\n"
  32
  33     yield "<body>\n"
  34     yield "<p>Welcome to this Samba web server.</p>\n"
  35     yield "<p>This page is a simple placeholder. You probably want to install "
  36     yield "SWAT. More information can be found "
  37     yield "<a href='http://wiki.samba.org/index.php/SWAT2'>on the wiki</a>.</p>"
  38     yield "</p>\n"
  39     yield "</body>\n"
  40     yield "</html>\n"
  41
  42
  43 def __call__(environ, start_response):
  44     """Handle a HTTP request."""
  45     from wsgiref.util import application_uri, shift_path_info
  46     from urlparse import urljoin
  47
  48     try:
  49         import swat
  50     except ImportError, e:
  51         print "NO SWAT: %r" % e
  52         have_swat = False
  53     else:
  54         have_swat = True
  55
  56     orig_path = environ['PATH_INFO']
  57     name = shift_path_info(environ)
  58
  59     if name == "":
  60         if have_swat:
  61             start_response('301 Redirect',
  62                 [('Location', urljoin(application_uri(environ), 'swat')),])
  63             return []
  64         else:
  65             return render_placeholder(environ, start_response)
  66     elif have_swat and name == "swat":
  67         return swat.__call__(environ, start_response)
  68     else:
  69         status = '404 Not found'
  70         response_headers = [('Content-type', 'text/html')]
  71         start_response(status, response_headers)
  72         return ["The path %s (%s) was not found" % (orig_path, name)]
  73
  74
  75 if __name__ == '__main__':
  76     from wsgiref import simple_server
  77     httpd = simple_server.make_server('localhost', 8090, __call__)
  78     print "Serving HTTP on port 8090..."
  79     httpd.serve_forever()