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"""
CFFI based implementation of the crypt module
"""
import sys
import cffi
import thread
_lock = thread.allocate_lock()
try: from __pypy__ import builtinify
except ImportError: builtinify = lambda f: f
ffi = cffi.FFI()
ffi.cdef('char *crypt(char *word, char *salt);')
try:
lib = ffi.dlopen('crypt')
except OSError:
raise ImportError('crypt not available')
@builtinify
def crypt(word, salt):
with _lock:
res = lib.crypt(word, salt)
if not res:
return None
return ffi.string(res)
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