/usr/lib/python2.7/dist-packages/minidinstall/GPGSigVerifier.py is in mini-dinstall 0.6.30ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | # GPGSigVerifier -*- mode: python; coding: utf-8 -*-
# A class for verifying signed files
# Copyright © 2002 Colin Walters <walters@gnu.org>
# This file 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
import os, re, sys, string, stat
from minidinstall import misc
class GPGSigVerifierException(Exception):
def __init__(self, value):
self._value = value
def __str__(self):
return `self._value`
class GPGSigVerificationFailure(Exception):
def __init__(self, value, output):
self._value = value
self._output = output
def __str__(self):
return `self._value`
def getOutput(self):
return self._output
class GPGSigVerifier:
def __init__(self, keyrings, gpgv=None):
self._keyrings = keyrings
if gpgv is None:
gpgv = '/usr/bin/gpgv'
if not os.access(gpgv, os.X_OK):
raise GPGSigVerifierException("Couldn't execute \"%s\"" % (gpgv,))
self._gpgv = gpgv
def verify(self, filename, sigfilename=None):
(stdin, stdout) = os.pipe()
pid = os.fork()
if pid == 0:
os.close(stdin)
misc.dup2(stdout, 1)
misc.dup2(stdout, 2)
args = []
for keyring in self._keyrings:
args.append('--keyring')
args.append(keyring)
if sigfilename:
args.append(sigfilename)
args = [self._gpgv] + args + [filename]
os.execv(self._gpgv, args)
os.exit(1)
os.close(stdout)
output = os.fdopen(stdin).readlines()
(pid, status) = os.waitpid(pid, 0)
if not (status is None or (os.WIFEXITED(status) and os.WEXITSTATUS(status) == 0)):
if os.WIFEXITED(status):
msg = "gpgv exited with error code %d" % (os.WEXITSTATUS(status),)
elif os.WIFSTOPPED(status):
msg = "gpgv stopped unexpectedly with signal %d" % (os.WSTOPSIG(status),)
elif os.WIFSIGNALED(status):
msg = "gpgv died with signal %d" % (os.WTERMSIG(status),)
raise GPGSigVerificationFailure(msg, output)
return output
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