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from pypy.interpreter.gateway import unwrap_spec
from rpython.rtyper.lltypesystem import rffi
from rpython.translator.tool.cbuild import ExternalCompilationInfo
import sys
if sys.platform.startswith('darwin'):
eci = ExternalCompilationInfo()
elif sys.platform.startswith('linux'):
# crypt() is defined only in crypt.h on some Linux variants (eg. Fedora 28)
eci = ExternalCompilationInfo(libraries=['crypt'], includes=["crypt.h"])
else:
eci = ExternalCompilationInfo(libraries=['crypt'])
c_crypt = rffi.llexternal('crypt', [rffi.CCHARP, rffi.CCHARP], rffi.CCHARP,
compilation_info=eci, releasegil=False)
@unwrap_spec(word='text', salt='text')
def crypt(space, word, salt):
"""word will usually be a user's password. salt is a 2-character string
which will be used to select one of 4096 variations of DES. The characters
in salt must be either ".", "/", or an alphanumeric character. Returns
the hashed password as a string, which will be composed of characters from
the same alphabet as the salt."""
res = c_crypt(word, salt)
if not res:
return space.w_None
str_res = rffi.charp2str(res)
return space.newtext(str_res)
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