def validate_public_key(value):
"""Check if a public key is valid."""
try:
rsa.PublicKey.load_pkcs1(value)
except ValueError:
raise Invalid(_(u'The public key is not valid'))
return True
def validate_private_key(value):
"""Check if a private key is valid."""
try:
rsa.PrivateKey.load_pkcs1(value)
except ValueError:
raise Invalid(_(u'The private key is not valid'))
return True
def validate_key_pair(data):
"""Check if a key pair is valid."""
pubkey = rsa.PublicKey.load_pkcs1(data.public_key)
privkey = rsa.PrivateKey.load_pkcs1(data.private_key)
try:
rsa.decrypt(rsa.encrypt('test', pubkey), privkey)
except rsa.pkcs1.DecryptionError:
raise Invalid(_(u'Cryptographic keys do not match'))
class IRichPreviewSettings(Interface):
"""Schema for the control panel form."""
enable = schema.Bool(
title=_(u'Enable Rich Link Previews?'),
description=
_(u'Rich Link Previews are only available for Dexterity-based content types.'
),
default=True,
)
form.widget('public_key', rows=5)
public_key = schema.Text(
title=_(u'Public Key'),
description=_(u'Used to encrypt the URL.'),
constraint=validate_public_key,
)
form.widget('private_key', rows=15)
private_key = schema.Text(
title=_(u'Private Key'),
description=_(
u'Used to decrypt the URL. Never share this key with anyone.'),
constraint=validate_private_key,
)
# keys are available to Administrators only
form.read_permission(public_key='cmf.ManagePortal',
private_key='cmf.ManagePortal')
form.write_permission(public_key='cmf.ManagePortal',
private_key='cmf.ManagePortal')
@invariant
def _validate_key_pair(data):
validate_key_pair(data)
class RichPreviewSettingsEditForm(controlpanel.RegistryEditForm):
"""Control panel edit form."""
schema = IRichPreviewSettings
label = _(u'Rich Link Preview')
description = _(u'Settings for the collective.behavior.richpreview package')