[IMP] auth_crypt: port to passlib instead of using embedded/hand-rolled md5crypt
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Xavier Morel
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81c174b740
commit
cf41752470
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@ -1,127 +1,20 @@
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#
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# Implements encrypting functions.
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#
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# Copyright (c) 2008, F S 3 Consulting Inc.
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#
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# Maintainer:
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# Alec Joseph Rivera (agi<at>fs3.ph)
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# refactored by Antony Lesuisse <al<at>openerp.com>
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#
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import hashlib
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import hmac
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import logging
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from random import sample
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from string import ascii_letters, digits
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from passlib.hash import md5_crypt
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import openerp
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from openerp.osv import fields, osv
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_logger = logging.getLogger(__name__)
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magic_md5 = '$1$'
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magic_sha256 = '$5$'
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def gen_salt(length=8, symbols=None):
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if symbols is None:
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symbols = ascii_letters + digits
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return ''.join(sample(symbols, length))
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def md5crypt( raw_pw, salt, magic=magic_md5 ):
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""" md5crypt FreeBSD crypt(3) based on but different from md5
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The md5crypt is based on Mark Johnson's md5crypt.py, which in turn is
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based on FreeBSD src/lib/libcrypt/crypt.c (1.2) by Poul-Henning Kamp.
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Mark's port can be found in ActiveState ASPN Python Cookbook. Kudos to
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Poul and Mark. -agi
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Original license:
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* "THE BEER-WARE LICENSE" (Revision 42):
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*
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* <phk@login.dknet.dk> wrote this file. As long as you retain this
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* notice you can do whatever you want with this stuff. If we meet some
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* day, and you think this stuff is worth it, you can buy me a beer in
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* return.
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*
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* Poul-Henning Kamp
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"""
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raw_pw = raw_pw.encode('utf-8')
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salt = salt.encode('utf-8')
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hash = hashlib.md5()
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hash.update( raw_pw + magic + salt )
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st = hashlib.md5()
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st.update( raw_pw + salt + raw_pw)
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stretch = st.digest()
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for i in range( 0, len( raw_pw ) ):
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hash.update( stretch[i % 16] )
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i = len( raw_pw )
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while i:
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if i & 1:
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hash.update('\x00')
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else:
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hash.update( raw_pw[0] )
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i >>= 1
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saltedmd5 = hash.digest()
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for i in range( 1000 ):
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hash = hashlib.md5()
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if i & 1:
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hash.update( raw_pw )
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else:
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hash.update( saltedmd5 )
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if i % 3:
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hash.update( salt )
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if i % 7:
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hash.update( raw_pw )
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if i & 1:
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hash.update( saltedmd5 )
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else:
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hash.update( raw_pw )
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saltedmd5 = hash.digest()
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itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
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rearranged = ''
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for a, b, c in ((0, 6, 12), (1, 7, 13), (2, 8, 14), (3, 9, 15), (4, 10, 5)):
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v = ord( saltedmd5[a] ) << 16 | ord( saltedmd5[b] ) << 8 | ord( saltedmd5[c] )
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for i in range(4):
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rearranged += itoa64[v & 0x3f]
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v >>= 6
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v = ord( saltedmd5[11] )
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for i in range( 2 ):
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rearranged += itoa64[v & 0x3f]
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v >>= 6
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return magic + salt + '$' + rearranged
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def sh256crypt(cls, password, salt, magic=magic_sha256):
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iterations = 1000
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# see http://en.wikipedia.org/wiki/PBKDF2
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result = password.encode('utf8')
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for i in xrange(cls.iterations):
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result = hmac.HMAC(result, salt, hashlib.sha256).digest() # uses HMAC (RFC 2104) to apply salt
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result = result.encode('base64') # doesnt seem to be crypt(3) compatible
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return '%s%s$%s' % (magic_sha256, salt, result)
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class res_users(osv.osv):
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_inherit = "res.users"
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def set_pw(self, cr, uid, id, name, value, args, context):
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if value:
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encrypted = md5crypt(value, gen_salt())
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encrypted = md5_crypt.encrypt(value)
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cr.execute("update res_users set password='', password_crypt=%s where id=%s", (encrypted, id))
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del value
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def get_pw( self, cr, uid, ids, name, args, context ):
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cr.execute('select id, password from res_users where id in %s', (tuple(map(int, ids)),))
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@ -141,25 +34,19 @@ class res_users(osv.osv):
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def check_credentials(self, cr, uid, password):
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# convert to base_crypt if needed
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cr.execute('SELECT password, password_crypt FROM res_users WHERE id=%s AND active', (uid,))
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stored_password_crypt = None
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if cr.rowcount:
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stored_password, stored_password_crypt = cr.fetchone()
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if stored_password and not stored_password_crypt:
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salt = gen_salt()
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stored_password_crypt = md5crypt(stored_password, salt)
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stored_password_crypt = md5_crypt.encrypt(stored_password)
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cr.execute("UPDATE res_users SET password='', password_crypt=%s WHERE id=%s", (stored_password_crypt, uid))
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try:
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return super(res_users, self).check_credentials(cr, uid, password)
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except openerp.exceptions.AccessDenied:
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# check md5crypt
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if stored_password_crypt:
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if stored_password_crypt[:len(magic_md5)] == magic_md5:
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salt = stored_password_crypt[len(magic_md5):11]
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if stored_password_crypt == md5crypt(password, salt):
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return
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elif stored_password_crypt[:len(magic_md5)] == magic_sha256:
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salt = stored_password_crypt[len(magic_md5):11]
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if stored_password_crypt == md5crypt(password, salt):
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return
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if md5_crypt.verify(password, stored_password_crypt):
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return
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# Reraise password incorrect
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raise
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2
setup.py
2
setup.py
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@ -95,6 +95,7 @@ def py2exe_options():
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"markupsafe", # dependence of jinja2 and mako
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"mock",
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"openerp",
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"passlib",
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"poplib",
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"psutil",
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"pychart",
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@ -163,6 +164,7 @@ setuptools.setup(
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'lxml', # windows binary http://www.lfd.uci.edu/~gohlke/pythonlibs/
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'mako',
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'mock',
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'passlib',
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'pillow', # windows binary http://www.lfd.uci.edu/~gohlke/pythonlibs/
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'psutil', # windows binary code.google.com/p/psutil/downloads/list
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'psycopg2 >= 2.2',
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@ -28,6 +28,7 @@ Depends:
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python-mako,
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python-mock,
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python-openid,
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python-passlib,
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python-psutil,
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python-psycopg2,
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python-pybabel,
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