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aec307d9 AD |
1 | import subprocess |
2 | import ldap | |
3 | import ldap.filter | |
4 | ||
e2ce65b9 AD |
5 | from django.contrib.auth.middleware import RemoteUserMiddleware |
6 | from django.contrib.auth.backends import RemoteUserBackend | |
2e0bd8fa AD |
7 | from django.contrib.auth.views import login |
8 | from django.contrib.auth import REDIRECT_FIELD_NAME | |
9 | from django.http import HttpResponseRedirect | |
e2ce65b9 AD |
10 | from django.contrib import auth |
11 | from django.core.exceptions import ObjectDoesNotExist | |
6650ee78 AD |
12 | from django.core.validators import URLValidator, ValidationError |
13 | ||
2e0bd8fa | 14 | import settings |
e2ce65b9 | 15 | |
aec307d9 AD |
16 | def zephyr(msg, clas='message', instance='log', rcpt='nobody',): |
17 | proc = subprocess.Popen( | |
18 | ['zwrite', '-d', '-n', '-c', clas, '-i', instance, rcpt, ], | |
19 | stdin=subprocess.PIPE, stdout=subprocess.PIPE | |
20 | ) | |
21 | proc.communicate(msg) | |
e2ce65b9 | 22 | |
6650ee78 AD |
23 | def UrlOrAfsValidator(value): |
24 | if value.startswith('/mit/') or value.startswith('/afs/'): | |
25 | return | |
26 | else: | |
27 | try: | |
28 | URLValidator()(value) | |
29 | except ValidationError: | |
30 | raise ValidationError('Provide a valid URL or AFS path') | |
31 | ||
e2ce65b9 AD |
32 | class ScriptsRemoteUserMiddleware(RemoteUserMiddleware): |
33 | header = 'SSL_CLIENT_S_DN_Email' | |
34 | ||
35 | class ScriptsRemoteUserBackend(RemoteUserBackend): | |
36 | def clean_username(self, username, ): | |
37 | if '@' in username: | |
38 | name, domain = username.split('@') | |
39 | assert domain.upper() == 'MIT.EDU' | |
40 | return name | |
41 | else: | |
42 | return username | |
43 | def configure_user(self, user, ): | |
44 | username = user.username | |
aec307d9 | 45 | user.password = "ScriptsSSLAuth" |
abab96a3 | 46 | con = ldap.open('ldap-too.mit.edu') |
e2ce65b9 AD |
47 | con.simple_bind_s("", "") |
48 | dn = "dc=mit,dc=edu" | |
49 | fields = ['cn', 'sn', 'givenName', 'mail', ] | |
aec307d9 AD |
50 | userfilter = ldap.filter.filter_format('uid=%s', [username]) |
51 | result = con.search_s('dc=mit,dc=edu', ldap.SCOPE_SUBTREE, userfilter, fields) | |
e2ce65b9 AD |
52 | if len(result) == 1: |
53 | user.first_name = result[0][1]['givenName'][0] | |
54 | user.last_name = result[0][1]['sn'][0] | |
23bea0e4 GT |
55 | try: |
56 | user.email = result[0][1]['mail'][0] | |
57 | except KeyError: | |
58 | user.email = username + '@mit.edu' | |
e2ce65b9 AD |
59 | try: |
60 | user.groups.add(auth.models.Group.objects.get(name='mit')) | |
61 | except ObjectDoesNotExist: | |
62 | print "Failed to retrieve mit group" | |
aec307d9 AD |
63 | else: |
64 | raise ValueError, ("Could not find user with username '%s' (filter '%s')"%(username, userfilter)) | |
e2ce65b9 AD |
65 | try: |
66 | user.groups.add(auth.models.Group.objects.get(name='autocreated')) | |
67 | except ObjectDoesNotExist: | |
68 | print "Failed to retrieve autocreated group" | |
aec307d9 | 69 | user.save() |
e2ce65b9 | 70 | return user |
2e0bd8fa | 71 | |
d4bd5af8 AD |
72 | def get_or_create_mit_user(username, ): |
73 | """ | |
74 | Given an MIT username, return a Django user object for them. | |
75 | If necessary, create (and save) the Django user for them. | |
76 | If the MIT user doesn't exist, raises ValueError. | |
77 | """ | |
78 | user, created = auth.models.User.objects.get_or_create(username=username, ) | |
79 | if created: | |
80 | backend = ScriptsRemoteUserBackend() | |
81 | # Raises ValueError if the user doesn't exist | |
82 | try: | |
83 | return backend.configure_user(user), created | |
84 | except ValueError: | |
85 | user.delete() | |
86 | raise | |
87 | else: | |
88 | return user, created | |
89 | ||
2e0bd8fa | 90 | def scripts_login(request, **kwargs): |
4df1aef4 AD |
91 | host = request.META['HTTP_HOST'].split(':')[0] |
92 | if host == 'localhost': | |
2e0bd8fa AD |
93 | return login(request, **kwargs) |
94 | elif request.META['SERVER_PORT'] == '444': | |
95 | if request.user.is_authenticated(): | |
96 | # They're already authenticated --- go ahead and redirect | |
97 | if 'redirect_field_name' in kwargs: | |
98 | redirect_field_name = kwargs['redirect_field_names'] | |
99 | else: | |
100 | from django.contrib.auth import REDIRECT_FIELD_NAME | |
101 | redirect_field_name = REDIRECT_FIELD_NAME | |
102 | redirect_to = request.REQUEST.get(redirect_field_name, '') | |
103 | if not redirect_to or '//' in redirect_to or ' ' in redirect_to: | |
104 | redirect_to = settings.LOGIN_REDIRECT_URL | |
105 | return HttpResponseRedirect(redirect_to) | |
106 | else: | |
107 | return login(request, **kwargs) | |
108 | else: | |
109 | # Move to port 444 | |
2e0bd8fa AD |
110 | redirect_to = "https://%s:444%s" % (host, request.META['REQUEST_URI'], ) |
111 | return HttpResponseRedirect(redirect_to) |