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103 lines (85 loc) · 2.94 KB
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# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
PASSLIB_AVAILABLE = False
try:
import passlib.hash
PASSLIB_AVAILABLE = True
except:
pass
def do_encrypt(result, encrypt, salt_size=None, salt=None):
if PASSLIB_AVAILABLE:
try:
crypt = getattr(passlib.hash, encrypt)
except:
raise ValueError("passlib does not support '%s' algorithm" % encrypt)
if salt_size:
result = crypt.encrypt(result, salt_size=salt_size)
elif salt:
result = crypt.encrypt(result, salt=salt)
else:
result = crypt.encrypt(result)
else:
raise ValueError("passlib must be installed to encrypt vars_prompt values")
return result
# Note, sha1 is the only hash algorithm compatible with python2.4 and with
# FIPS-140 mode (as of 11-2014)
try:
from hashlib import sha1 as sha1
except ImportError:
from sha import sha as sha1
# Backwards compat only
try:
from hashlib import md5 as _md5
except ImportError:
try:
from md5 import md5 as _md5
except ImportError:
# Assume we're running in FIPS mode here
_md5 = None
def secure_hash_s(data, hash_func=sha1):
''' Return a secure hash hex digest of data. '''
digest = hash_func()
try:
if not isinstance(data, basestring):
data = "%s" % data
digest.update(data)
except UnicodeEncodeError:
digest.update(data.encode('utf-8'))
return digest.hexdigest()
def secure_hash(filename, hash_func=sha1):
''' Return a secure hash hex digest of local file, None if file is not present or a directory. '''
if not os.path.exists(filename) or os.path.isdir(filename):
return None
digest = hash_func()
blocksize = 64 * 1024
try:
infile = open(filename, 'rb')
block = infile.read(blocksize)
while block:
digest.update(block)
block = infile.read(blocksize)
infile.close()
except IOError as e:
raise ValueError("error while accessing the file %s, error was: %s" % (filename, e))
return digest.hexdigest()
# The checksum algorithm must match with the algorithm in ShellModule.checksum() method
checksum = secure_hash
checksum_s = secure_hash_s
# Backwards compat functions. Some modules include md5s in their return values
# Continue to support that for now.
# should also return "checksum" (sha1 for now)
# Do not use md5 unless it is needed for:
# 1) Optional backwards compatibility
# 2) Compliance with a third party protocol
#
# MD5 will not work on systems which are FIPS-140-2 compliant.
def md5s(data):
if not _md5:
raise ValueError('MD5 not available. Possibly running in FIPS mode')
return secure_hash_s(data, _md5)
def md5(filename):
if not _md5:
raise ValueError('MD5 not available. Possibly running in FIPS mode')
return secure_hash(filename, _md5)