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import json
from ctypes import c_char_p, c_uint32, c_void_p, byref
from .lib import (
_lib,
_flags,
RNP_JSON_DUMP_MPI,
RNP_JSON_DUMP_RAW,
RNP_JSON_DUMP_GRIP,
RnpException,
)
from .key import Key
class Signature:
def __init__(self, obj):
self._obj = obj
def __del__(self):
_lib.rnp_signature_handle_destroy(self._obj)
def obj(self):
return self._obj
def type(self):
return self._string_property(_lib.rnp_signature_get_type)
def alg(self):
return self._string_property(_lib.rnp_signature_get_alg)
def hashalg(self):
return self._string_property(_lib.rnp_signature_get_hash_alg)
def keyid(self):
return self._string_property(_lib.rnp_signature_get_keyid)
def creation_time(self):
time = c_uint32()
_lib.rnp_signature_get_creation(self._obj, byref(time))
return time.value
def lifetime(self):
if _lib.features.get("have-rnp-signature-get-expiration"):
time = c_uint32()
_lib.rnp_signature_get_expiration(self._obj, byref(time))
return time.value
raise RnpException("Not supported in this version of librnp")
def signer(self):
signer = c_void_p()
_lib.rnp_signature_get_signer(self._obj, byref(signer))
if signer.value:
return Key(signer.value)
def status(self):
return _lib.rnp_signature_is_valid(self._obj, 0)
def json(self, mpis=False, raw=False, grip=False):
flags = _flags(
[
(mpis, RNP_JSON_DUMP_MPI),
(raw, RNP_JSON_DUMP_RAW),
(grip, RNP_JSON_DUMP_GRIP),
]
)
jsn = c_char_p()
try:
_lib.rnp_signature_packet_to_json(self._obj, flags, byref(jsn))
# pylint: disable=E1101
return json.loads(jsn.value.decode("utf-8"))
finally:
_lib.rnp_buffer_destroy(jsn)
def _string_property(self, fn):
prop = c_char_p()
try:
fn(self._obj, byref(prop))
# pylint: disable=E1101
return prop.value.decode("ascii")
finally:
_lib.rnp_buffer_destroy(prop)
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