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# IVLE - Informatics Virtual Learning Environment
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# Copyright (C) 2007-2008 The University of Melbourne
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# Author: Thomas Conway, Will Grant
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from optparse import OptionParser
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import simplejson as json
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from ivle import zip as zipmod
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import ivle.conf.app.server
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def determine_file_type(filename):
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filetype = mimetypes.guess_type(filename)[0]
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filetype = ivle.mimetypes.DEFAULT_MIMETYPE
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def throw_error(message, extra={}):
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error = {'error': message}
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print json.dumps(error)
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parser = OptionParser()
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parser.add_option('-d', '--download', dest='download', action='store_true',
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help='force download, not execution, of the paths')
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(options, args) = parser.parse_args()
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# Detect download mode. Download mode zips any multiple selection,
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# and does not execute CGI scripts.
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# paths is filled later.
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default_mimetype = "application/octet-stream"
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zip_mimetype = "application/zip"
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# If multiple paths have been specified, zip them up.
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# Mangle the paths - we want the basename of their dirname in front.
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dir = os.path.dirname(args[0])
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assert os.path.dirname(path) == dir
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paths.append(os.path.join(os.path.basename(dir),
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os.path.basename(path)))
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dir = os.path.dirname(dir)
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zipfilename = os.path.basename(zipbasepath)
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if not os.access(filename, os.F_OK):
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# The given path doesn't exist. CGI lets us backtrack and put the path
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# elements through which we pass into PATH_INFO, so we try that.
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while not os.access(filename, os.F_OK):
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filename, path_info_frag = os.path.split(filename)
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# We now have a file that exists, but is it something that we're allowed
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# to execute? If not, we should 404 anyway.
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if determine_file_type(filename) not in ivle.conf.app.server.interpreters:
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throw_error('not-found')
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# If it's a directory, serve as a zip file
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if os.path.isdir(filename):
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# Not giving a directory listing - this is visible to everyone.
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throw_error('is-directory')
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# Zip it from the perspective of its own parent.
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# That way it will be a directory in the top level of the zip
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if filename[-1] == os.sep: filename = filename[:-1]
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splitpath = filename.rsplit(os.sep, 1)
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if len(splitpath) == 1:
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zipbasepath = splitpath[0]
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paths = [splitpath[1]]
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zipfilename = filename
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if not download and \
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determine_file_type(filename) in ivle.conf.app.server.interpreters:
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throw_error('is-executable', {'path': filename.decode('utf-8')})
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if not download and (
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(ivle.conf.app.server.blacklist_served_filetypes and \
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determine_file_type(filename) in \
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ivle.conf.app.server.served_filetypes_blacklist) or \
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(ivle.conf.app.server.served_filetypes_whitelist and \
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determine_file_type(filename) not in \
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ivle.conf.app.server.served_filetypes_whitelist)):
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throw_error('forbidden')
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# zipfilename is some filename. Strip trailing slash or extension,
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if zipfilename == '':
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zipfilename = "files"
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elif zipfilename[-1] == '/':
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zipfilename = zipfilename[:-1]
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elif '.' in zipfilename:
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zipfilename = zipfilename[:zipfilename.rindex('.')]
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zipfilename += ".zip"
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#req.headers_out["Content-Disposition"] = ("attachment; filename=" +
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# zipfilename) # TODO
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zipfile = StringIO.StringIO()
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zipmod.make_zip(zipbasepath, paths, zipfile)
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print json.dumps({'type': zip_mimetype,
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'name': zipfilename.decode('utf-8'),
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'size': len(zipfile.getvalue()),
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print json.dumps({'type': determine_file_type(filename),
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'name': os.path.basename(filename).decode('utf-8'),
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'size': os.path.getsize(filename),
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stream = open(filename)
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next = stream.read(1024)
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sys.stdout.write(next)
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next = stream.read(1024)
added
removed
services/serveservice
