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#!/usr/bin/env python
import six
from saml2 import element_to_extension_element
from saml2 import extension_elements_to_elements
from saml2 import ExtensionElement
from saml2 import SamlBase
from saml2 import md
__author__ = 'rolandh'
"""
Functions used to import metadata from and export it to a pysaml2 format
"""
IMP_SKIP = ["_certs", "e_e_", "_extatt"]
EXP_SKIP = ["__class__"]
# From pysaml2 SAML2 metadata format to Python dictionary
def _eval(val, onts, mdb_safe):
"""
Convert a value to a basic dict format
:param val: The value
:param onts: Schemas to be used in the conversion
:return: The basic dictionary
"""
if isinstance(val, six.string_types):
val = val.strip()
if not val:
return None
else:
return val
elif (
isinstance(val, dict)
or isinstance(val, SamlBase)
or isinstance(val, ExtensionElement)
):
return to_dict(val, onts, mdb_safe)
elif isinstance(val, list):
lv = []
for v in val:
if (
isinstance(v, dict)
or isinstance(v, SamlBase)
or isinstance(v, ExtensionElement)
):
lv.append(to_dict(v, onts, mdb_safe))
else:
lv.append(v)
return lv
return val
def to_dict(_dict, onts, mdb_safe=False):
"""
Convert a pysaml2 SAML2 message class instance into a basic dictionary
format.
The export interface.
:param _dict: The pysaml2 metadata instance
:param onts: List of schemas to use for the conversion
:return: The converted information
"""
res = {}
if isinstance(_dict, SamlBase):
res["__class__"] = "%s&%s" % (_dict.c_namespace, _dict.c_tag)
for key in _dict.keyswv():
if key in IMP_SKIP:
continue
val = getattr(_dict, key)
if key == "extension_elements":
_eel = extension_elements_to_elements(
val, onts, keep_unmatched=True
)
_val = [_eval(_v, onts, mdb_safe) for _v in _eel]
elif key == "extension_attributes":
if mdb_safe:
_val = dict([(k.replace(".", "__"), v) for k, v in
val.items()])
#_val = {k.replace(".", "__"): v for k, v in val.items()}
else:
_val = val
else:
_val = _eval(val, onts, mdb_safe)
if _val:
if mdb_safe:
key = key.replace(".", "__")
res[key] = _val
elif isinstance(_dict, ExtensionElement):
res = {
key: _val
for key, val in _dict.__dict__.items()
if val and key not in IMP_SKIP
for _val in [_eval(val, onts, mdb_safe)]
if _val
}
res["__class__"] = "%s&%s" % (_dict.namespace, _dict.tag)
else:
for key, val in _dict.items():
_val = _eval(val, onts, mdb_safe)
if _val:
if mdb_safe and "." in key:
key = key.replace(".", "__")
res[key] = _val
return res
# From Python dictionary to pysaml2 SAML2 metadata format
def _kwa(val, onts, mdb_safe=False):
"""
Key word argument conversion
:param val: A dictionary
:param onts: dictionary with schemas to use in the conversion
schema namespase is the key in the dictionary
:return: A converted dictionary
"""
if not mdb_safe:
return dict([(k, from_dict(v, onts)) for k, v in val.items()
if k not in EXP_SKIP])
else:
_skip = ["_id"]
_skip.extend(EXP_SKIP)
return dict([(k.replace("__", "."), from_dict(v, onts)) for k, v in
val.items() if k not in _skip])
def from_dict(val, onts, mdb_safe=False):
"""
Converts a dictionary into a pysaml2 object
:param val: A dictionary
:param onts: Dictionary of schemas to use in the conversion
:return: The pysaml2 object instance
"""
if isinstance(val, dict):
if "__class__" in val:
ns, typ = val["__class__"].split("&")
cls = getattr(onts[ns], typ)
if cls is md.Extensions:
lv = []
for key, ditems in val.items():
if key in EXP_SKIP:
continue
for item in ditems:
ns, typ = item["__class__"].split("&")
cls = getattr(onts[ns], typ)
kwargs = _kwa(item, onts, mdb_safe)
inst = cls(**kwargs)
lv.append(element_to_extension_element(inst))
return lv
else:
kwargs = _kwa(val, onts, mdb_safe)
inst = cls(**kwargs)
return inst
else:
res = {}
for key, v in val.items():
if mdb_safe:
key = key.replace("__", ".")
res[key] = from_dict(v, onts)
return res
elif isinstance(val, six.string_types):
return val
elif isinstance(val, list):
return [from_dict(v, onts) for v in val]
else:
return val
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