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#!/usr/bin/python -O
#
# /usr/sbin/webapp-config
# Python script for managing the deployment of web-based
# applications
#
# Originally written for the Gentoo Linux distribution
#
# Copyright (c) 1999-2007 Authors
# Released under v2 of the GNU GPL
#
# Author(s) Stuart Herbert
# Renat Lumpau <rl03@gentoo.org>
# Gunnar Wrobel <wrobel@gentoo.org>
#
# ========================================================================
''' Handles the information stored within the virtual install location
about the type of package installed. '''
# ========================================================================
# Dependencies
# ------------------------------------------------------------------------
import pwd, shlex, os.path
from time import strftime
from WebappConfig.debug import OUT
from WebappConfig.permissions import PermissionMap
# ========================================================================
# Handler for dotConfig files
# ------------------------------------------------------------------------
class DotConfig:
'''
This class handles the dotconfig file that will be written to all
virtual install locations.
'''
def __init__(self,
installdir,
dot_config = '.webapp',
permission = PermissionMap('0600'),
pretend = False):
self.__instdir = installdir
self.__file = dot_config
self.__perm = permission
self.__p = pretend
self.__data = {}
self.__tokens = ['WEB_CATEGORY',
'WEB_PN',
'WEB_PVR',
'WEB_INSTALLEDBY',
'WEB_INSTALLEDDATE',
'WEB_INSTALLEDFOR',
'WEB_HOSTNAME',
'WEB_INSTALLDIR']
def __getitem__(self, key):
if key in list(self.__data.keys()):
return self.__data[key]
# this key didn't exist in old versions, but new versions
# expect it. fix bug 355295
elif key == 'WEB_CATEGORY':
return ''
def __dot_config(self):
''' Returns the full path to the dot config file.'''
return self.__instdir + '/' + self.__file
def has_dotconfig(self):
''' Return True if the install location already has a dotconfig
file.'''
dotconfig = self.__dot_config()
OUT.debug('Verifying path', 7)
if not os.path.isfile(dotconfig):
return False
if not os.access(dotconfig, os.R_OK):
return False
return True
def is_empty(self):
'''
Checks if there are more files '.webapp-*' in the directory.
Returns empty if there are none.
'''
if not os.path.isdir(self.__instdir):
return '!dir ' + self.__instdir
# get a directory listing
entries = os.listdir(self.__instdir)
for i in entries:
if i[:len(self.__file)] == self.__file and i != self.__file:
return '!morecontents ' + i
def show_installed(self):
''' Show which application has been installed in the install
location.'''
if not self.has_dotconfig():
OUT.die('No ' + self.__file + ' file in ' + self.__instdir
+ '; unable to continue')
self.read()
if 'WEB_CATEGORY' in self.__data:
OUT.notice(self.__data['WEB_CATEGORY'] + ' ' +
self.__data['WEB_PN'] + ' ' +
self.__data['WEB_PVR'])
else:
OUT.notice(
self.__data['WEB_PN'] + ' ' +
self.__data['WEB_PVR'])
def packagename(self):
''' Retrieve the package name from the values specified in the dot
config file'''
OUT.debug('Trying to retrieve package name', 6)
if 'WEB_PN' in list(self.__data.keys()) and 'WEB_PVR' in list(self.__data.keys()):
if 'WEB_CATEGORY' in list(self.__data.keys()):
return self.__data['WEB_CATEGORY'] + '/' + \
self.__data['WEB_PN'] + '-' + self.__data['WEB_PVR']
else:
return self.__data['WEB_PN'] + '-' + self.__data['WEB_PVR']
return ''
def read(self):
''' Read the contents of the dot config file.'''
dotconfig = self.__dot_config()
OUT.debug('Checking for dotconfig ', 6)
if not self.has_dotconfig():
raise Exception('Cannot read file ' + dotconfig)
tokens = shlex.shlex(open(dotconfig))
while True:
a = tokens.get_token()
b = tokens.get_token()
c = tokens.get_token()
OUT.debug('Reading token', 8)
if (a in self.__tokens and
b == '=' and c):
if c[0] == '"':
c = c[1:]
if c[-1] == '"':
c = c[:-1]
self.__data[a] = c
else:
break
def write(self,
category,
package,
version,
host,
original_installdir,
user_group):
'''
Output the .webapp file, that tells us in future what has been installed
into this directory.
'''
self.__data['WEB_CATEGORY'] = category
self.__data['WEB_PN'] = package
self.__data['WEB_PVR'] = version
self.__data['WEB_INSTALLEDBY'] = pwd.getpwuid(os.getuid())[0]
self.__data['WEB_INSTALLEDDATE'] = strftime('%Y-%m-%d %H:%M:%S')
self.__data['WEB_INSTALLEDFOR'] = user_group
self.__data['WEB_HOSTNAME'] = host
self.__data['WEB_INSTALLDIR'] = original_installdir
info = ['# ' + self.__file,
'# config file for this copy of '
+ package + '-' + version,
'#',
'# automatically created by Gentoo\'s webapp-config',
'# do NOT edit this file by hand',
'',]
for i in self.__tokens:
info.append(i + '="' + self.__data[i] + '"')
if not self.__p:
try:
fd = os.open(self.__dot_config(),
os.O_WRONLY | os.O_CREAT,
self.__perm(0o600))
os.write(fd, ('\n'.join(info)).encode('utf-8'))
os.close(fd)
except Exception as e:
OUT.die('Unable to write to ' + self.__dot_config()
+ '\nError was: ' + str(e))
else:
OUT.info('Would have written the following information into '
+ self.__dot_config() + ':\n' + '\n'.join(info))
def kill(self):
''' Remove the dot config file.'''
empty = self.is_empty()
OUT.debug('Trying to removing .webapp file', 7)
if not empty:
if not self.__p:
try:
os.unlink(self.__dot_config())
except:
OUT.warn('Failed to remove '
+ self.__dot_config() + '!')
return False
else:
OUT.info('Would have removed ' + self.__dot_config())
return True
else:
OUT.notice('--- ' + empty)
return False
|
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