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python-rfc3161
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add a TimestampingError exception

This commit is contained in:
Benjamin Dauvergne 2012-10-03 18:31:43 +02:00
parent 6b0511170d
commit 594e51e66c
1 changed files with 9 additions and 2 deletions
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11
rfc3161/api.py
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@ -3,19 +3,23 @@ from pyasn1_modules import rfc2459
from pyasn1.type import univ
from pyasn1.error import PyAsn1Error
import M2Crypto.X509 as X509
import socket
import rfc3161
import hashlib
import urllib2
import base64
__all__ = ('RemoteTimestamper','check_timestamp','get_hash_oid')
__all__ = ('RemoteTimestamper','check_timestamp','get_hash_oid', 'TimestampingError')
id_attribute_messageDigest = univ.ObjectIdentifier((1,2,840,113549,1,9,4,))
def get_hash_oid(hashname):
return rfc3161.__dict__['id_'+hashname]
class TimestampingError(RuntimeError):
pass
def check_timestamp(tst, certificate, data=None, sha1=None, hashname=None):
hashobj = hashlib.new(hashname or 'sha1')
if not sha1:
@ -132,7 +136,10 @@ class RemoteTimestamper(object):
if self.username != None:
base64string = base64.standard_b64encode('%s:%s' % (self.username, self.password))
http_request.add_header("Authorization", "Basic %s" % base64string)
response = urllib2.urlopen(http_request).read()
try:
response = urllib2.urlopen(http_request).read()
except (IOError, socket.error), e:
raise TimestampingError('Unable to send the request to %s' % self.url, e)
# open('response.tsr', 'w').write(response)
tst_response, substrate = decoder.decode(response, asn1Spec=rfc3161.TimeStampResp())
if substrate: