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#!/usr/bin/python
# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2008 The University of Melbourne
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Script: serveservice
# Author: Thomas Conway
# Date: 6/3/2007
# A CGI script for serving files.
import mimetypes
import os
import StringIO
import urlparse
from ivle import (cgirequest, studpath)
from ivle import zip as zipmod
req = cgirequest.CGIRequest()
req.install_error_handler()
# Work out the parts of the URL
url = urlparse.urlparse(req.path)
querystr = url[4]
urlpath = url[2]
filename = studpath.url_to_jailpaths(urlpath)[2]
default_mimetype = "application/octet-stream"
zip_mimetype = "application/zip"
zipmode = False
zipbasepath = None
zipfilename = None
path = None
# If any "path=" variables have been supplied, bring these into a list and
# make a zip file instead.
fields = req.get_fieldstorage()
paths = fields.getlist("path")
if len(paths) > 0:
zipmode = True
zipbasepath = filename
zipfilename = os.path.basename(zipbasepath)
#for i in range(0, len(paths)):
#paths[i] = paths[i].value
else:
if filename is None:
req.throw_error(req.HTTP_NOT_FOUND,
"The path specified is invalid.")
elif not os.access(filename, os.R_OK):
req.throw_error(req.HTTP_NOT_FOUND,
"The specified file (%s) does not exist." % urlpath)
# If it's a directory, serve as a zip file
if os.path.isdir(filename):
zipmode = True
# Zip it from the perspective of its own parent.
# That way it will be a directory in the top level of the zip
# file.
if filename[-1] == os.sep: filename = filename[:-1]
splitpath = filename.rsplit(os.sep, 1)
if len(splitpath) == 1:
zipbasepath = ''
paths = [filename]
else:
zipbasepath = splitpath[0]
paths = [splitpath[1]]
zipfilename = paths[0]
if zipmode:
req.content_type = zip_mimetype
# zipfilename is some filename. Strip trailing slash or extension,
# and add ".zip".
if zipfilename == '':
zipfilename = "files"
elif zipfilename[-1] == '/':
zipfilename = zipfilename[:-1]
elif '.' in zipfilename:
zipfilename = zipfilename[:zipfilename.rindex('.')]
zipfilename += ".zip"
req.headers_out["Content-Disposition"] = ("attachment; filename=" +
zipfilename)
zipfile = StringIO.StringIO()
zipmod.make_zip(zipbasepath, paths, zipfile)
req.write(zipfile.getvalue())
else:
#req.content_type = default_mimetype
req.sendfile(filename)
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