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#!/usr/bin/env python
#
# HashIt.py: this file is part of the GRS suite
# Copyright (C) 2015 Anthony G. Basile
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from grs.Execute import Execute
class HashIt():
""" Create a DIGEST file for certain tarballs, or ISOs. This class must
be inherited by a class which sets the medium_name and digest_name,
else we'll get an AttributeError exception.
"""
def hashit(self):
""" Generate various hash values. We hijack the 'logfile' which will
actually be the file containing the hashes.
"""
# We need to be in the parent of the system's portage configroot because
# that's where we created the above tarball. This should be the workdir,
# but its probably safer to be pedantic here.
cwd = os.getcwd()
os.chdir(os.path.join(self.portage_configroot, '..'))
# Note: this first cmd clobbers the contents
cmd = 'echo "# MD5 HASH"'
Execute(cmd, logfile=self.digest_name)
cmd = 'md5sum %s' % self.medium_name
Execute(cmd, timeout=60, logfile=self.digest_name)
cmd = 'echo "# SHA1 HASH"'
Execute(cmd, logfile=self.digest_name)
cmd = 'sha1sum %s' % self.medium_name
Execute(cmd, timeout=60, logfile=self.digest_name)
cmd = 'echo "# SHA512 HASH"'
Execute(cmd, logfile=self.digest_name)
cmd = 'sha512sum %s' % self.medium_name
Execute(cmd, timeout=60, logfile=self.digest_name)
cmd = 'echo "# WHIRLPOOL HASH"'
Execute(cmd, logfile=self.digest_name)
cmd = 'whirlpooldeep %s' % self.medium_name
Execute(cmd, timeout=60, logfile=self.digest_name)
os.chdir(cwd)
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