python3-passlib 1.5.3-0ubuntu3 / usr / lib / python3 / dist-packages / passlib / hosts.py

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"""passlib.hosts"""
#=========================================================
#imports
#=========================================================
#core
import sys
from warnings import warn
#pkg
from passlib.context import LazyCryptContext
from passlib.registry import get_crypt_handler
from passlib.utils import os_crypt, unix_crypt_schemes
#local
__all__ = [
    "linux_context", "linux2_context",
    "openbsd_context",
    "netbsd_context",
    "freebsd_context",
    "host_context",
]

#=========================================================
#linux support
#=========================================================

#known platform names - linux2

linux_context = linux2_context = LazyCryptContext(
    schemes = [ "sha512_crypt", "sha256_crypt", "md5_crypt",
               "des_crypt", "unix_fallback" ],
    deprecated = [ "des_crypt" ],
    )

#=========================================================
#bsd support
#=========================================================

#known platform names -
#   freebsd2
#   freebsd3
#   freebsd4
#   freebsd5
#   freebsd6
#   freebsd7
#
#   netbsd1

#referencing source via -http://fxr.googlebit.com
# freebsd 6,7,8 - des, md5, bcrypt, nthash
# netbsd - des, ext, md5, bcrypt, sha1
# openbsd - des, ext, md5, bcrypt

freebsd_context = LazyCryptContext([ "bcrypt", "md5_crypt", "nthash", "des_crypt", "unix_fallback" ])
openbsd_context = LazyCryptContext([ "bcrypt", "md5_crypt", "bsdi_crypt", "des_crypt", "unix_fallback" ])
netbsd_context = LazyCryptContext([ "bcrypt", "sha1_crypt", "md5_crypt", "bsdi_crypt", "des_crypt", "unix_fallback" ])

#=========================================================
#current host
#=========================================================
if os_crypt:
    #NOTE: this is basically mimicing the output of os crypt(),
    #except that it uses passlib's (usually stronger) defaults settings,
    #and can be introspected and used much more flexibly.

    def _iter_os_crypt_schemes():
        "helper which iterates over supported os_crypt schemes"
        found = False
        for name in unix_crypt_schemes:
            handler = get_crypt_handler(name)
            if handler.has_backend("os_crypt"):
                found = True
                yield name
        if found:
            #only offer fallback if there's another scheme in front,
            #as this can't actually hash any passwords
            yield "unix_fallback"
        else:
            #no idea what OS this could happen on, but just in case...
            warn("crypt.crypt() function is present, but doesn't support any formats known to passlib!")

    host_context = LazyCryptContext(_iter_os_crypt_schemes())

#=========================================================
#other platforms
#=========================================================

#known platform strings -
#aix3
#aix4
#atheos
#beos5
#darwin
#generic
#hp-ux11
#irix5
#irix6
#mac
#next3
#os2emx
#riscos
#sunos5
#unixware7

#=========================================================
#eof
#=========================================================

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