--- /dev/null
+from core.models import User,Site,Service,SingletonModel,PlCoreBase,Slice,SlicePrivilege
+import os
+from django.db import models
+from django.db.models import Q
+from django.forms.models import model_to_dict
+from django.core.exceptions import ValidationError, ObjectDoesNotExist
+
+# Create your models here.
+
+class SyndicateService(SingletonModel,Service):
+ class Meta:
+ app_label = "syndicate_storage"
+ verbose_name = "Syndicate Service"
+ verbose_name_plural = "Syndicate Service"
+
+ def __unicode__(self): return u'Syndicate Service'
+
+
+class SyndicatePrincipal(PlCoreBase):
+ class Meta:
+ app_label = "syndicate_storage"
+
+ # for now, this is a user email address
+ principal_id = models.TextField()
+ public_key_pem = models.TextField()
+ sealed_private_key = models.TextField()
+
+ def __unicode__self(self): return "%s" % self.principal_id
+
+
+class Volume(PlCoreBase):
+ class Meta:
+ app_label = "syndicate_storage"
+
+ name = models.CharField(max_length=64, help_text="Human-readable, searchable name of the Volume")
+
+ owner_id = models.ForeignKey(User, verbose_name='Owner')
+
+ description = models.TextField(null=True, blank=True,max_length=130, help_text="Human-readable description of what this Volume is used for.")
+ blocksize = models.PositiveIntegerField(help_text="Number of bytes per block.")
+ private = models.BooleanField(default=True, help_text="Indicates if the Volume is visible to users other than the Volume Owner and Syndicate Administrators.")
+ archive = models.BooleanField(default=False, help_text="Indicates if this Volume is read-only, and only an Aquisition Gateway owned by the Volume owner (or Syndicate admin) can write to it.")
+
+ cap_read_data = models.BooleanField(default=True, help_text="VM can read Volume data")
+ cap_write_data = models.BooleanField(default=True, help_text="VM can write Volume data")
+ cap_host_data = models.BooleanField(default=True, help_text="VM can host Volume data")
+
+ slice_id = models.ManyToManyField(Slice, through="VolumeSlice")
+
+ def __unicode__(self): return self.name
+
+
+ @staticmethod
+ def select_by_user(user):
+ """
+ Only return Volumes accessible by the user.
+ Admin users can see everything.
+ """
+ if user.is_admin:
+ qs = Volume.objects.all()
+ else:
+ qs = Volume.objects.filter( Q(owner_id=user) | Q(private=False) )
+
+ return qs
+
+
+class VolumeAccessRight(PlCoreBase):
+ class Meta:
+ app_label = "syndicate_storage"
+
+ owner_id = models.ForeignKey(User, verbose_name='user')
+
+ volume = models.ForeignKey(Volume)
+
+ cap_read_data = models.BooleanField(default=True, help_text="VM can read Volume data")
+ cap_write_data = models.BooleanField(default=True, help_text="VM can write Volume data")
+ cap_host_data = models.BooleanField(default=True, help_text="VM can host Volume data")
+
+
+ def __unicode__(self): return "%s-%s" % (self.owner_id.email, self.volume.name)
+
+
+class ObserverSecretValue( models.TextField ):
+ class Meta:
+ app_label = "syndicate_storage"
+
+ __metaclass__ = models.SubfieldBase
+
+ MAGIC_PREFIX = "$SECRET$:"
+
+ @classmethod
+ def is_encrypted( cls, secret_str ):
+ # all encrypted secrets start with MAGIC_PREFIX, which is NOT base64-encoded
+ return secret_str.startswith( cls.MAGIC_PREFIX )
+
+ @classmethod
+ def unserialize( cls, serialized_ciphertext ):
+ # strip prefix and return ciphertext
+ return serialized_ciphertext[len(cls.MAGIC_PREFIX):]
+
+ @classmethod
+ def serialize( cls, ciphertext ):
+ # prepend a magic prefix so we know it's encrypted
+ return cls.MAGIC_PREFIX + ciphertext
+
+ def to_python( self, secret_str ):
+ """
+ Decrypt the value with the Observer key
+ """
+
+ # is this in the clear?
+ if not ObserverSecretValue.is_encrypted( secret_str ):
+ # nothing to do
+ return secret_str
+
+ # otherwise, decrypt it
+ from syndicate_observer import syndicatelib
+
+ # get observer private key
+ config = syndicatelib.get_config()
+
+ try:
+ observer_pkey_path = config.SYNDICATE_PRIVATE_KEY
+ observer_pkey_pem = syndicatelib.get_private_key_pem( observer_pkey_path )
+ except:
+ raise syndicatelib.SyndicateObserverError( "Internal Syndicate Observer error: failed to load Observer private key" )
+
+ # deserialize
+ secret_str = ObserverSecretValue.unserialize( secret_str )
+
+ # decrypt
+ if secret_str is not None and len(secret_str) > 0:
+
+ slice_secret = syndicatelib.decrypt_slice_secret( observer_pkey_pem, secret_str )
+
+ if slice_secret is not None:
+ return slice_secret
+
+ else:
+ raise syndicatelib.SyndicateObserverError( "Internal Syndicate Observer error: failed to decrypt slice secret value" )
+ else:
+ return None
+
+
+ def pre_save( self, model_inst, add ):
+ """
+ Encrypt the value with the Observer key
+ """
+
+ from syndicate_observer import syndicatelib
+
+ # get observer private key
+ config = syndicatelib.get_config()
+
+ try:
+ observer_pkey_path = config.SYNDICATE_PRIVATE_KEY
+ observer_pkey_pem = syndicatelib.get_private_key_pem( observer_pkey_path )
+ except:
+ raise syndicatelib.SyndicateObserverError( "Internal Syndicate Observer error: failed to load Observer private key" )
+
+ slice_secret = getattr(model_inst, self.attname )
+
+ if slice_secret is not None:
+
+ # encrypt it
+ sealed_slice_secret = syndicatelib.encrypt_slice_secret( observer_pkey_pem, slice_secret )
+
+ return ObserverSecretValue.serialize( sealed_slice_secret )
+
+ else:
+ raise syndicatelib.SyndicateObserverError( "Internal Syndicate Observer error: No slice secret generated" )
+
+
+class SliceSecret(models.Model): # NOTE: not a PlCoreBase
+ class Meta:
+ app_label = "syndicate_storage"
+
+ slice_id = models.ForeignKey(Slice)
+ secret = ObserverSecretValue(blank=True, help_text="Shared secret between OpenCloud and this slice's Syndicate daemons.")
+
+ def __unicode__(self): return self.slice_id.name
+
+ @staticmethod
+ def select_by_user(user):
+ """
+ Only return slice secrets for slices where this user has 'admin' role.
+ Admin users can see everything.
+ """
+ if user.is_admin:
+ qs = SliceSecret.objects.all()
+ else:
+ visible_slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user,role__role='admin')]
+ qs = SliceSecret.objects.filter(slice_id__id__in=visible_slice_ids)
+
+ return qs
+
+
+class VolumeSlice(PlCoreBase):
+ class Meta:
+ app_label = "syndicate_storage"
+
+ volume_id = models.ForeignKey(Volume, verbose_name="Volume")
+ slice_id = models.ForeignKey(Slice, verbose_name="Slice")
+
+ cap_read_data = models.BooleanField(default=True, help_text="VM can read Volume data")
+ cap_write_data = models.BooleanField(default=True, help_text="VM can write Volume data")
+ cap_host_data = models.BooleanField(default=True, help_text="VM can host Volume data")
+
+ UG_portnum = models.PositiveIntegerField(help_text="User Gateway port. Any port above 1024 will work, but it must be available slice-wide.", verbose_name="UG port")
+ RG_portnum = models.PositiveIntegerField(help_text="Replica Gateway port. Any port above 1024 will work, but it must be available slice-wide.", verbose_name="RG port")
+
+ credentials_blob = models.TextField(null=True, blank=True, help_text="Encrypted slice credentials, sealed with the slice secret.")
+
+ def __unicode__(self): return "%s-%s" % (self.volume_id.name, self.slice_id.name)
+
+ def clean(self):
+ """
+ Verify that our fields are in order:
+ * UG_portnum and RG_portnum have to be valid port numbers between 1025 and 65534
+ * UG_portnum and RG_portnum cannot be changed once set.
+ * UG_portnum and RG_portnum are unique
+ """
+
+ if self.UG_portnum == self.RG_portnum:
+ raise ValidationError( "UG and RG ports must be unique" )
+
+ if self.UG_portnum < 1025 or self.UG_portnum > 65534:
+ raise ValidationError( "UG port number must be between 1025 and 65534" )
+
+ if self.RG_portnum < 1025 or self.RG_portnum > 65534:
+ raise ValidationError( "RG port number must be between 1025 and 65534" )
+
+
+ def save(self, *args, **kw):
+ """
+ Make sure a SliceSecret exists for this slice
+ """
+
+ from syndicate_observer import syndicatelib
+
+ # get observer private key
+ config = syndicatelib.get_config()
+
+ try:
+ observer_pkey_path = config.SYNDICATE_PRIVATE_KEY
+ observer_pkey_pem = syndicatelib.get_private_key_pem( observer_pkey_path )
+ except:
+ raise syndicatelib.SyndicateObserverError( "Internal Syndicate Observer error: failed to load Observer private key" )
+
+ # get or create the slice secret
+ slice_secret = syndicatelib.get_or_create_slice_secret( observer_pkey_pem, None, slice_fk=self.slice_id )
+
+ if slice_secret is None:
+ raise SyndicateObserverError( "Failed to get or create slice secret for %s" % self.slice_id.name )
+
+ super(VolumeSlice, self).save(*args, **kw)
+
+
+
git://git.onelab.eu / plstackapi.git / blobdiff