tutorial.cgi
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#!/usr/bin/env python
'''
Initiate a tutorial session.
Author: Goran Topic
Sampo Pyysalo
Pontus Stenetorp
Version: 2012-11-12
'''
from sys import path as sys_path
from os.path import join as path_join
from os.path import dirname, isdir
from shutil import copytree, rmtree
from os import environ, makedirs, errno
from cgi import FieldStorage
import re
sys_path.append(path_join(dirname(__file__), 'server/src'))
from session import init_session, get_session
from config import DATA_DIR
# Tutorials have to be enabled explicitly since it modifies the disk
try:
from config import TUTORIALS
except ImportError:
TUTORIALS = False
if not TUTORIALS:
print 'Content-Type: text/plain'
print ''
print 'Tutorials disabled on this server, please enable it in config.py'
print ''
print ''
exit(0)
TUTORIAL_BASE = '.tutorials'
TUTORIAL_START = '000-introduction'
TUTORIAL_DATA_DIR = DATA_DIR
TUTORIAL_SKELETON = 'example-data/tutorials/'
DEFAULT_TUTORIAL_TYPE = 'news'
def mkdir_p(path):
try:
makedirs(path)
except OSError, x:
if x.errno == errno.EEXIST and isdir(path):
pass
else:
raise
try:
remote_addr = environ['REMOTE_ADDR']
except KeyError:
remote_addr = None
try:
cookie_data = environ['HTTP_COOKIE']
except KeyError:
cookie_data = None
params = FieldStorage()
if 'type' in params:
tutorial_type = unicode(params.getvalue('type'))
else:
tutorial_type = DEFAULT_TUTORIAL_TYPE
if 'overwrite' in params:
overwrite = unicode(params.getvalue('overwrite'))
else:
overwrite = False
# security check; don't allow arbitrary path specs for copytree
assert re.match(r'^[a-zA-Z0-9_-]+$', tutorial_type)
init_session(remote_addr, cookie_data=cookie_data)
_id = str(abs(hash(get_session().get_sid())))
reldir = path_join(TUTORIAL_BASE, '.' + _id)
userdir = path_join(TUTORIAL_DATA_DIR, reldir)
tutorial_dir = path_join(userdir, tutorial_type)
if not isdir(tutorial_dir) or overwrite:
mkdir_p(userdir)
if isdir(tutorial_dir) and overwrite:
rmtree(tutorial_dir)
copytree(path_join(TUTORIAL_SKELETON, tutorial_type), tutorial_dir)
start = path_join(reldir, tutorial_type, TUTORIAL_START)
print 'Content-Type: text/plain'
print 'Refresh: 0; url=index.xhtml#/%s' % start
print ''
print ''