ansible/lib/ansible/utils/unsafe_proxy.py

125 lines
4.7 KiB
Python

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# Original Python Recipe for Proxy:
# http://code.activestate.com/recipes/496741-object-proxying/
# Author: Tomer Filiba
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import json
from ansible.module_utils.six import string_types, text_type
from ansible.module_utils._text import to_text
__all__ = ['UnsafeProxy', 'AnsibleUnsafe', 'AnsibleJSONUnsafeEncoder', 'AnsibleJSONUnsafeDecoder', 'wrap_var']
class AnsibleUnsafe(object):
__UNSAFE__ = True
class AnsibleUnsafeText(text_type, AnsibleUnsafe):
pass
class UnsafeProxy(object):
def __new__(cls, obj, *args, **kwargs):
# In our usage we should only receive unicode strings.
# This conditional and conversion exists to sanity check the values
# we're given but we may want to take it out for testing and sanitize
# our input instead.
if isinstance(obj, string_types):
obj = to_text(obj, errors='surrogate_or_strict')
return AnsibleUnsafeText(obj)
return obj
class AnsibleJSONUnsafeEncoder(json.JSONEncoder):
def encode(self, obj):
if isinstance(obj, AnsibleUnsafe):
return super(AnsibleJSONUnsafeEncoder, self).encode(dict(__ansible_unsafe=True,
value=to_text(obj, errors='surrogate_or_strict', nonstring='strict')))
else:
return super(AnsibleJSONUnsafeEncoder, self).encode(obj)
class AnsibleJSONUnsafeDecoder(json.JSONDecoder):
def decode(self, obj):
value = super(AnsibleJSONUnsafeDecoder, self).decode(obj)
if isinstance(value, dict) and '__ansible_unsafe' in value:
return UnsafeProxy(value.get('value', ''))
else:
return value
def _wrap_dict(v):
for k in v.keys():
if v[k] is not None:
v[wrap_var(k)] = wrap_var(v[k])
return v
def _wrap_list(v):
for idx, item in enumerate(v):
if item is not None:
v[idx] = wrap_var(item)
return v
def wrap_var(v):
if isinstance(v, dict):
v = _wrap_dict(v)
elif isinstance(v, list):
v = _wrap_list(v)
else:
if v is not None and not isinstance(v, AnsibleUnsafe):
v = UnsafeProxy(v)
return v