old gnuviechadmin version that is not developed anymore
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# -*- python -*-
# -*- coding: utf-8 -*-
#
# Copyright (C) 2007, 2008 by Jan Dittberner.
#
# 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
#
# Version: $Id$
import os, logging, tempfile
from settings import config
from gnuviechadmin.exceptions import *
from gnuviechadmin.util import gpgmail
from subprocess import *
import sqlalchemy
from sqlalchemy.orm import object_mapper
class BackendEntity(object):
"""This is the abstract base class for all backend entity classes."""
def __init__(self, delegateto, verbose = False):
self.logger = logging.getLogger("%s.%s" % (
self.__class__.__module__, self.__class__.__name__))
self.delegateto = delegateto
self.verbose = verbose
def __repr__(self):
return self.delegateto.__repr__(verbose = self.verbose)
def sucommand(self, cmdline, pipedata = None):
"""Executes a command as root using the configured suwrapper
command. If a pipe is specified it is used as stdin of the
subprocess."""
self.logger.debug("sucommand called: %s (pipedata=%s)", cmdline,
str(pipedata))
suwrapper = config.get('common', 'suwrapper')
toexec = "%s %s" % (suwrapper, cmdline)
if pipedata:
p = Popen(toexec, shell = True, stdin=PIPE)
pipe = p.stdin
print >>pipe, pipedata
pipe.close()
sts = os.waitpid(p.pid, 0)
if self.verbose:
print "%s|%s: %d" % (pipedata, toexec, sts[1])
self.logger.info("%s|%s: %d", pipedata, toexec, sts[1])
else:
p = Popen(toexec, shell = True)
sts = os.waitpid(p.pid, 0)
if self.verbose:
print "%s: %s" % (toexec, sts[1])
self.logger.info("%s: %s", toexec, sts[1])
return sts[1]
def supipe(self, cmdlines):
"""Executes multiple commands as root and pipes the output of
the commands to the input of the next commands."""
self.logger.debug("supipe called: %s", " | ".join(cmdlines))
suwrapper = config.get('common', 'suwrapper')
predecessor = None
for cmdline in cmdlines:
toexec = "%s %s" % (suwrapper, cmdline)
if predecessor is None:
p = Popen(toexec, shell = True, stdout = PIPE)
else:
p = Popen(toexec, shell = True, stdin = predecessor.stdout,
stdout = PIPE)
predecessor = p
output = predecessor.communicate()[0]
return predecessor.wait()
def send_mail(self, subject, text):
"""This method sends a mail with the given text and subject
and signs it usign GnuPG. If a public key of the recipient is
available the mail is encrypted."""
gpgmail.send_mail(subject, text)
def validate(self):
"""Validates whether all mandatory fields of the entity have
values."""
missingfields = []
for key in [col.name for col in \
object_mapper(
self.delegateto).local_table.columns \
if not col.primary_key and not col.nullable]:
if self.delegateto.__getattribute__(key) is None:
missingfields.append(key)
if missingfields:
raise MissingFieldsError(missingfields)
def write_to_file(self, filename, template):
"""Write the data from template to the specified file."""
tmp = tempfile.NamedTemporaryFile()
tmp.write(template)
tmp.flush()
cmd = 'cp "%s" "%s"' % (tmp.name, filename)
self.sucommand(cmd)
tmp.close()