Introduce Django to your old friends

Leverage Django 1.5’s custom user model to work with corporate/internal authentication networks (Kerberos, Active Directory, LDAP). Associated blog post: http://rogue.ly/circus

Transcript

1. intentionally left blank
   

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2. getting django
   to play with
   old friends
   

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3. getting django
   to play with
   old friends
   or foes
   

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4. engineer @ red hat
   @roguelynn
   roguelynn.com
   Lynn Root
   

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5. Lynn Root
   freeipa.org
   

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6. Lynn Root
   freeipa.org
   IPA != India Pale Ale
   

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7. Lynn Root
   freeipa.org
   IPA == Identity, Policy, Audit
   

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8. Lynn Root
   freeipa.org
   IPA == Identity, Policy, Audit
   Alpha
   

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9. Playbill
   Setting up Custom User
   External Authentication
   External Permissions
   

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10. rogue.ly/circus
    

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12. Problem:
    Make an internal web app.
    

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13. Question:
    Can I use Postgres
    for auth?
    

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14. Crap.
    I have to use single sign-on.
    

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15. new User models
    +
    antiquated authentication
    

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16. ZOMG
    new user modelzz !1!!
    what does that mean?
    

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17. allows custom
    user identifiers
    

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18. ./manage.py startapp
    synegizerApp
    

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19. user model:
    

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20. # synergizerApp/models.py
    from django.contrib.auth.models import AbstractBaseUser
    class KerbUser(AbstractBaseUser):
    username = models.CharField(max_length=254, ...)
    first_name = models.CharField(...)
    last_name = models.CharField(...)
    email = models.EmailField(...)
    synergy_level = models.IntegerField()
    is_team_player = models.BooleanField(default=False)
    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email', 'synergy_level']
    

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21. user manager:
    

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22. # synergizerApp/models.py
    from django.contrib.auth.models import (
    AbstractBaseUser, BaseUserManager)
    class KerbUserManager(BaseUserManager):
    def create_user(self, email, synergy_level,
    password=None):
    user = self.model(email=email,
    synergy_level=synergy_level)
    #
    return user
    def create_superuser(self, email, synergy_level,
    password):
    user = self.create_user(email, synergy_level,
    password=password)
    user.is_team_player = True
    user.save()
    return user
    

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23. # synergizerApp/models.py
    from django.contrib.auth.models import (
    AbstractBaseUser, BaseUserManager)
    ...
    class KerbUser(AbstractBaseUser):
    #
    objects = KerbUserManager()
    

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24. settings.py
    

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25. # settings.py
    AUTH_USER_MODEL = 'synergizerApp.KerbUser'
    MIDDLEWARE_CLASSES = (
    ...
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.RemoteUserMiddleware',
    ...
    )
    AUTHENTICATION_BACKENDS = (
    'django.contrib.auth.backends.RemoteUserBackends',
    )
    team player!
    

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26. pointyhairedboss@
    STRATEGERY.COM
    

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27. pointyhairedboss@
    STRATEGERY.COM
    

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28. client-centric!!1!
    # synergizerApp/krb5.py
    from django.contrib.auth.backends import (
    RemoteUserBackend)
    class Krb5RemoteUserBackend(RemoteUserBackend):
    def clean_username(self, username):
    # remove @REALM from username
    return username.split("@")[0]
    

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29. # settings.py
    AUTH_USER_MODEL = 'synergizerApp.KerbUser'
    MIDDLEWARE_CLASSES = (
    ...
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.RemoteUserMiddleware',
    ...
    )
    AUTHENTICATION_BACKENDS = (
    'synergizerApp.krb5.Krb5RemoteUserBackend',
    )
    a streamlining team player!
    

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30. how do I
    Apache?
    

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31. environment:
    Kerberos + Apache
    

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32. # /etc/httpd/conf.d/remote_user.conf
    LoadModule auth_kerb_module modules/mod_auth_kerb.so
    
    AuthName "DjangoConKerberos"
    AuthType Kerberos
    KrbMethodNegotiate On
    KrbMethodK5Passwd Off
    KrbServiceName HTTP/djangocon.rootcloud.com
    KrbAuthRealms ROOTCLOUD.COM
    Krb5KeyTab /etc/http.keytab
    Require valid-user
    Order Deny,Allow
    Deny from all
    Satisfy any
    
    

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33. # /etc/httpd/conf.d/remote_user.conf
    LoadModule auth_kerb_module modules/mod_auth_kerb.so
    
    AuthName "DjangoConKerberos"
    AuthType Kerberos
    KrbMethodNegotiate On
    KrbMethodK5Passwd Off
    KrbServiceName HTTP/djangocon.rootcloud.com
    KrbAuthRealms ROOTCLOUD.COM
    Krb5KeyTab /etc/http.keytab
    Require valid-user
    Order Deny,Allow
    Deny from all
    Satisfy any
    
    

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34. # /etc/httpd/conf.d/remote_user.conf
    LoadModule auth_kerb_module modules/mod_auth_kerb.so
    
    AuthName "DjangoConKerberos"
    AuthType Kerberos
    KrbMethodNegotiate On
    KrbMethodK5Passwd Off
    KrbServiceName HTTP/djangocon.rootcloud.com
    KrbAuthRealms ROOTCLOUD.COM
    Krb5KeyTab /etc/http.keytab
    Require valid-user
    Order Deny,Allow
    Deny from all
    Satisfy any
    
    

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35. mod_auth_kerb
    Enrolled host + service
    chown apache
    

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36. # /etc/httpd/conf.d/remote_user.conf
    LoadModule auth_kerb_module modules/mod_auth_kerb.so
    
    AuthName "DjangoConKerberos"
    AuthType Kerberos
    KrbMethodNegotiate On
    KrbMethodK5Passwd Off
    KrbServiceName HTTP/djangocon.rootcloud.com
    KrbAuthRealms ROOTCLOUD.COM
    Krb5KeyTab /etc/http.keytab
    Require valid-user
    Order Deny,Allow
    Deny from all
    Satisfy any
    
    

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37. does it negotiate?
    

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38. cURL
    requests.py
    browsers
    

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39. $ curl --negotiate
    -u : $FQDN
    

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40. [vagrant@client]# kinit roguelynn
    Password for roguelynn@ROOTCLOUD.COM:
    [vagrant@client]# curl -I --negotiate -u : \
    https://synergizeapp.strategery.com
    HTTP/1.1 401 Unauthorized
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate
    Content-type text/html; charset=iso-8859-1
    HTTP/1.1 200
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate sOmE_RanDom_T0k3n
    

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41. [vagrant@client]# kinit roguelynn
    Password for roguelynn@ROOTCLOUD.COM:
    [vagrant@client]# curl -I --negotiate -u : \
    https://synergizeapp.strategery.com
    HTTP/1.1 401 Unauthorized
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate
    Content-type text/html; charset=iso-8859-1
    HTTP/1.1 200
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate sOmE_RanDom_T0k3n
    

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42. [vagrant@client]# kinit roguelynn
    Password for roguelynn@ROOTCLOUD.COM:
    [vagrant@client]# curl -I --negotiate -u : \
    https://synergizeapp.strategery.com
    HTTP/1.1 401 Unauthorized
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate
    Content-type text/html; charset=iso-8859-1
    HTTP/1.1 200
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate sOmE_RanDom_T0k3n
    ticket cache
    

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43. [vagrant@client]# kinit roguelynn
    Password for roguelynn@ROOTCLOUD.COM:
    [vagrant@client]# curl -I --negotiate -u : \
    https://synergizeapp.strategery.com
    HTTP/1.1 401 Unauthorized
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate
    Content-type text/html; charset=iso-8859-1
    HTTP/1.1 200
    Date: Wed, 15 May 2013 09:10:18 GMT
    Server: Apache/2.4.4 (Fedora)
    WWW-Authenticate: Negotiate sOmE_RanDom_T0k3n
    two responses
    

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44. cURL
    requests.py
    browsers
    

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45. authentication
    vs
    authorization
    

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46. authentication
    vs
    authorization
    

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47. accessing permissions
    

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48. is user a member of
    “admins”, or
    “team players”, or
    “movers and shakers”, ...
    

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49. your own
    kerberos environment
    

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50. Crap.
    Now I’m the point person
    for this.
    

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51. rogue.ly/circus
    @roguelynn
    

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52. Background image:
    http://www.animalhi.com/Mammals/elephants/
    abstract_flying_elephants_circus_simplistic_simple_1920x1080_wallpaper_29579
    

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