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# misc -*- mode: python; coding: utf-8 -*-
# misc tools for mini-dinstall
# Copyright 2004 Thomas Viehmann <tv@beamnet.de>
# 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, errno, time, string, re, popen2
def dup2(fd,fd2):
# dup2 with EBUSY retries (cf. dup2(2) and Debian bug #265513)
success = 0
tries = 0
while (not success):
try:
os.dup2(fd,fd2)
success = 1
except OSError, e:
if (e.errno != errno.EBUSY) or (tries >= 3):
raise
# wait 0-2 seconds befor next try
time.sleep(tries)
tries += 1
def format_changes(L):
""" remove changelog header and all lines with only a dot """
dotmatch = re.compile('^\.$')
L1 = []
for x in L[3:]:
L1.append(dotmatch.sub('', x))
return "\n".join(L1)
def get_file_sum(self, type, filename):
""" generate hash sums for file """
ret = _get_external_file_sum(self, type, filename)
if not ret:
ret = _get_internal_file_sum(type, filename)
return ret
def _get_internal_file_sum(type, filename):
""" generate hash sums for file with python modules """
if type == 'md5':
import md5
sum = md5.new()
elif type == 'sha1':
import sha
sum = sha.new()
elif type == 'sha256':
from Crypto.Hash import SHA256
sum = SHA256.new()
f = open(filename)
buf = f.read(8192)
while buf != '':
sum.update(buf)
buf = f.read(8192)
return sum.hexdigest()
def _get_external_file_sum(self, type, filename):
""" generate hash sums for file with external programs """
ret = None
if os.access('/usr/bin/%ssum' % (type,), os.X_OK):
cmd = '/usr/bin/%ssum %s' % (type, filename,)
self._logger.debug("Running: %s" % (cmd,))
child = popen2.Popen3(cmd, 1)
child.tochild.close()
erroutput = child.childerr.read()
child.childerr.close()
if erroutput != '':
child.fromchild.close()
raise DinstallException("%ssum returned error output \"%s\"" % (type, erroutput,))
(sum, filename) = string.split(child.fromchild.read(), None, 1)
child.fromchild.close()
try:
status = child.wait()
except OSError, (errnum, err):
if errnum == 10:
self._logger.warn("Ignoring missing child proccess")
status = 0
if not (status is None or (os.WIFEXITED(status) and os.WEXITSTATUS(status) == 0)):
if os.WIFEXITED(status):
msg = "%ssum exited with error code %d" % (type, os.WEXITSTATUS(status),)
elif os.WIFSTOPPED(status):
msg = "%ssum stopped unexpectedly with signal %d" % (type, os.WSTOPSIG(status),)
elif os.WIFSIGNALED(status):
msg = "%ssum died with signal %d" % (type, os.WTERMSIG(status),)
raise DinstallException(msg)
ret = sum.strip()
return ret
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