128 lines
4.6 KiB
Python
128 lines
4.6 KiB
Python
"""
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Creates permissions for all installed apps that need permissions.
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"""
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import getpass
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import locale
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import unicodedata
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from django.contrib.auth import models as auth_app
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from django.db.models import get_models, signals
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from django.contrib.auth.models import User
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def _get_permission_codename(action, opts):
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return u'%s_%s' % (action, opts.object_name.lower())
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def _get_all_permissions(opts):
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"Returns (codename, name) for all permissions in the given opts."
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perms = []
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for action in ('add', 'change', 'delete'):
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perms.append((_get_permission_codename(action, opts), u'Can %s %s' % (action, opts.verbose_name_raw)))
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return perms + list(opts.permissions)
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def create_permissions(app, created_models, verbosity, **kwargs):
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from django.contrib.contenttypes.models import ContentType
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app_models = get_models(app)
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# This will hold the permissions we're looking for as
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# (content_type, (codename, name))
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searched_perms = list()
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# The codenames and ctypes that should exist.
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ctypes = set()
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ctypes_for_models = ContentType.objects.get_for_models(*app_models)
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for klass, ctype in ctypes_for_models.iteritems():
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ctypes.add(ctype)
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for perm in _get_all_permissions(klass._meta):
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searched_perms.append((ctype, perm))
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# Find all the Permissions that have a context_type for a model we're
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# looking for. We don't need to check for codenames since we already have
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# a list of the ones we're going to create.
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all_perms = set(auth_app.Permission.objects.filter(
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content_type__in=ctypes,
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).values_list(
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"content_type", "codename"
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))
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objs = [
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auth_app.Permission(codename=codename, name=name, content_type=ctype)
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for ctype, (codename, name) in searched_perms
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if (ctype.pk, codename) not in all_perms
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]
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auth_app.Permission.objects.bulk_create(objs)
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if verbosity >= 2:
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for obj in objs:
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print "Adding permission '%s'" % obj
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def create_superuser(app, created_models, verbosity, db, **kwargs):
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from django.core.management import call_command
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if auth_app.User in created_models and kwargs.get('interactive', True):
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msg = ("\nYou just installed Django's auth system, which means you "
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"don't have any superusers defined.\nWould you like to create one "
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"now? (yes/no): ")
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confirm = raw_input(msg)
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while 1:
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if confirm not in ('yes', 'no'):
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confirm = raw_input('Please enter either "yes" or "no": ')
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continue
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if confirm == 'yes':
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call_command("createsuperuser", interactive=True, database=db)
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break
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def get_system_username():
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"""
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Try to determine the current system user's username.
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:returns: The username as a unicode string, or an empty string if the
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username could not be determined.
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"""
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try:
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return getpass.getuser().decode(locale.getdefaultlocale()[1])
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except (ImportError, KeyError, UnicodeDecodeError):
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# KeyError will be raised by os.getpwuid() (called by getuser())
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# if there is no corresponding entry in the /etc/passwd file
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# (a very restricted chroot environment, for example).
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# UnicodeDecodeError - preventive treatment for non-latin Windows.
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return u''
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def get_default_username(check_db=True):
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"""
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Try to determine the current system user's username to use as a default.
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:param check_db: If ``True``, requires that the username does not match an
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existing ``auth.User`` (otherwise returns an empty string).
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:returns: The username, or an empty string if no username can be
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determined.
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"""
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from django.contrib.auth.management.commands.createsuperuser import (
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RE_VALID_USERNAME)
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default_username = get_system_username()
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try:
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default_username = unicodedata.normalize('NFKD', default_username)\
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.encode('ascii', 'ignore').replace(' ', '').lower()
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except UnicodeDecodeError:
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return ''
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if not RE_VALID_USERNAME.match(default_username):
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return ''
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# Don't return the default username if it is already taken.
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if check_db and default_username:
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try:
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User.objects.get(username=default_username)
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except User.DoesNotExist:
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pass
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else:
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return ''
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return default_username
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signals.post_syncdb.connect(create_permissions,
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dispatch_uid = "django.contrib.auth.management.create_permissions")
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signals.post_syncdb.connect(create_superuser,
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sender=auth_app, dispatch_uid = "django.contrib.auth.management.create_superuser")
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