source: branches/locker-dev/locker/deploy/trac/trac.fcgi @ 1528

Last change on this file since 1528 was 1528, checked in by andersk, 12 years ago
trac: Mangle HTTP_REFERER to let the login link keep you on the same page.
  • Property svn:executable set to *
File size: 2.4 KB
RevLine 
[1527]1#!/usr/bin/python
2
3import os, os.path, sys
4from trac.web import fcgi_frontend
[1528]5import urlparse
[1527]6
7env_path = os.getcwd()+'/tracdata'
8os.environ['TRAC_ENV'] = env_path
9
10def send_upgrade_message(environ, start_response):
11    import pwd
12    start_response('500 Internal Server Error', [])
13    locker = pwd.getpwuid(os.getuid())[0]
14    return ['''This Trac instance needs to be upgraded.
15
16From an Athena machine, type
17  ssh %s@scripts trac-admin %s upgrade --no-backup
18  ssh %s@scripts trac-admin %s wiki upgrade
19to upgrade, and then
20  add scripts
21  for-each-server -l %s pkill trac.fcgi
22to get this message out of the way.
23
24Please ask the scripts.mit.edu maintainers for help
25if you have any trouble, at scripts@mit.edu.
26''' % (locker, env_path, locker, env_path, locker)]
27
28def setup_env():
29    '''Obtain the environment, handling the needs-upgrade check, and cache it.
30
31    This mimics open_environment in trac/env.py.'''
32    import trac.env
33    env = trac.env.Environment(env_path)
34    needs_upgrade = False
35    try:
36        needs_upgrade = env.needs_upgrade()
37    except Exception, e: # e.g. no database connection
38        env.log.exception(e)
39    if env.needs_upgrade():
40        fcgi_frontend._fcgi.WSGIServer(send_upgrade_message).run()
41        sys.exit(0)
42    if hasattr(trac.env, 'env_cache'):
43        trac.env.env_cache[env_path] = env
44setup_env()
45
46def my_dispatch_request(environ, start_response):
47    if ('REDIRECT_URL' in environ and 'PATH_INFO' in environ
48        and environ['REDIRECT_URL'].endswith(environ['PATH_INFO'])):
49        environ['SCRIPT_NAME'] = environ['REDIRECT_URL'][:-len(environ['PATH_INFO'])]
[1528]50
51    # If the referrer has our hostname and path, rewrite it to have
52    # the right protocol and port, too.  This lets the login link go
53    # to the right page.
54    if 'HTTP_REFERER' in environ:
55        referrer = urlparse.urlsplit(environ['HTTP_REFERER'])
56        base = urlparse.urlsplit(
57            ('https://' if environ.get('HTTPS') == 'on' else 'http://') +
58            environ['HTTP_HOST'] +
59            environ['SCRIPT_NAME'])
60        if referrer.hostname == base.hostname and \
61           (referrer.path == base.path or
62            referrer.path.startswith(base.path + '/')):
63            environ['HTTP_REFERER'] = urlparse.urlunsplit(
64                (base.scheme, base.netloc,
65                 referrer.path, referrer.query, referrer.fragment))
66
[1527]67    return fcgi_frontend.dispatch_request(environ, start_response)
68
69fcgi_frontend._fcgi.WSGIServer(my_dispatch_request).run()
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