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lwp.py
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lwp.py
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# LXC Python Library
# for compatibility with LXC 0.8 and 0.9
# on Ubuntu 12.04/12.10/13.04
# Author: Elie Deloumeau
# Contact: [email protected]
# The MIT License (MIT)
# Copyright (c) 2013 Elie Deloumeau
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import lxclite as lxc
import lwp
import subprocess
import time
import re
import hashlib
import sqlite3
import os
import sys
from os.path import abspath, dirname, join as path_join
from flask import Flask, request, session, g, redirect, url_for, abort, \
render_template, flash, jsonify
try:
import configparser
except ImportError:
import ConfigParser as configparser
# configuration
config = configparser.SafeConfigParser()
CWD = dirname(abspath(__file__))
config.readfp(open(path_join(CWD, 'lwp.conf')))
SECRET_KEY = '\xb13\xb6\xfb+Z\xe8\xd1n\x80\x9c\xe7KM' \
'\x1c\xc1\xa7\xf8\xbeY\x9a\xfa<.'
DEBUG = config.getboolean('global', 'debug')
DATABASE = path_join(CWD, config.get('database', 'file'))
ADDRESS = config.get('global', 'address')
PORT = int(config.get('global', 'port'))
# Flask app
app = Flask(__name__)
app.config.from_object(__name__)
def connect_db():
'''
SQLite3 connect function
'''
return sqlite3.connect(app.config['DATABASE'])
@app.before_request
def before_request():
'''
executes functions before all requests
'''
check_session_limit()
g.db = connect_db()
@app.teardown_request
def teardown_request(exception):
'''
executes functions after all requests
'''
if hasattr(g, 'db'):
g.db.close()
@app.route('/')
@app.route('/home')
def home():
'''
home page function
'''
if 'logged_in' in session:
listx = lxc.listx()
containers_all = []
for status in ['RUNNING', 'FROZEN', 'STOPPED']:
containers_by_status = []
for container in listx[status]:
containers_by_status.append({
'name': container,
'memusg': lwp.memory_usage(container),
'settings': lwp.get_container_settings(container)
})
containers_all.append({
'status': status.lower(),
'containers': containers_by_status
})
return render_template('index.html', containers=lxc.ls(),
containers_all=containers_all,
dist=lwp.check_ubuntu(),
templates=lwp.get_templates_list())
return render_template('login.html')
@app.route('/about')
def about():
'''
about page
'''
if 'logged_in' in session:
return render_template('about.html', containers=lxc.ls(),
version=lwp.check_version())
return render_template('login.html')
@app.route('/<container>/edit', methods=['POST', 'GET'])
def edit(container=None):
'''
edit containers page and actions if form post request
'''
if 'logged_in' in session:
host_memory = lwp.host_memory_usage()
if request.method == 'POST':
cfg = lwp.get_container_settings(container)
ip_regex = '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]' \
'|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4]' \
'[0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]' \
'?[0-9][0-9]?)(/(3[0-2]|[12]?[0-9]))?'
info = lxc.info(container)
form = {}
form['type'] = request.form['type']
form['link'] = request.form['link']
try:
form['flags'] = request.form['flags']
except KeyError:
form['flags'] = 'down'
form['hwaddr'] = request.form['hwaddress']
form['rootfs'] = request.form['rootfs']
form['utsname'] = request.form['hostname']
form['ipv4'] = request.form['ipaddress']
form['memlimit'] = request.form['memlimit']
form['swlimit'] = request.form['swlimit']
form['cpus'] = request.form['cpus']
form['shares'] = request.form['cpushares']
try:
form['autostart'] = request.form['autostart']
except KeyError:
form['autostart'] = False
if form['utsname'] != cfg['utsname'] and \
re.match('(?!^containers$)|^(([a-zA-Z0-9]|[a-zA-Z0-9]'
'[a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|'
'[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$',
form['utsname']):
lwp.push_config_value('lxc.utsname', form['utsname'],
container=container)
flash(u'Hostname updated for %s!' % container, 'success')
if form['flags'] != cfg['flags'] and \
re.match('^(up|down)$', form['flags']):
lwp.push_config_value('lxc.network.flags', form['flags'],
container=container)
flash(u'Network flag updated for %s!' % container, 'success')
if form['type'] != cfg['type'] and \
re.match('^\w+$', form['type']):
lwp.push_config_value('lxc.network.type', form['type'],
container=container)
flash(u'Link type updated for %s!' % container, 'success')
if form['link'] != cfg['link'] and \
re.match('^[a-zA-Z0-9_-]+$', form['link']):
lwp.push_config_value('lxc.network.link', form['link'],
container=container)
flash(u'Link name updated for %s!' % container, 'success')
if form['hwaddr'] != cfg['hwaddr'] and \
re.match('^([a-fA-F0-9]{2}[:|\-]?){6}$', form['hwaddr']):
lwp.push_config_value('lxc.network.hwaddr', form['hwaddr'],
container=container)
flash(u'Hardware address updated for %s!' % container,
'success')
if (not form['ipv4'] and form['ipv4'] != cfg['ipv4']) or \
(form['ipv4'] != cfg['ipv4'] and
re.match('^%s$' % ip_regex, form['ipv4'])):
lwp.push_config_value('lxc.network.ipv4', form['ipv4'],
container=container)
flash(u'IP address updated for %s!' % container, 'success')
if form['memlimit'] != cfg['memlimit'] and \
form['memlimit'].isdigit() and \
int(form['memlimit']) <= int(host_memory['total']):
if int(form['memlimit']) == int(host_memory['total']):
form['memlimit'] = ''
if form['memlimit'] != cfg['memlimit']:
lwp.push_config_value('lxc.cgroup.memory.limit_in_bytes',
form['memlimit'],
container=container)
if info["state"].lower() != 'stopped':
lxc.cgroup(container,
'lxc.cgroup.memory.limit_in_bytes',
form['memlimit'])
flash(u'Memory limit updated for %s!' % container,
'success')
if form['swlimit'] != cfg['swlimit'] and \
form['swlimit'].isdigit() and \
int(form['swlimit']) <= int(host_memory['total'] * 2):
if int(form['swlimit']) == int(host_memory['total'] * 2):
form['swlimit'] = ''
if form['swlimit'].isdigit():
form['swlimit'] = int(form['swlimit'])
if form['memlimit'].isdigit():
form['memlimit'] = int(form['memlimit'])
if (form['memlimit'] == '' and form['swlimit'] != '') or \
(form['memlimit'] > form['swlimit'] and
form['swlimit'] != ''):
flash(u'Can\'t assign swap memory lower than'
' the memory limit', 'warning')
elif form['swlimit'] != cfg['swlimit'] and \
form['memlimit'] <= form['swlimit']:
lwp.push_config_value(
'lxc.cgroup.memory.memsw.limit_in_bytes',
form['swlimit'], container=container)
if info["state"].lower() != 'stopped':
lxc.cgroup(container,
'lxc.cgroup.memory.memsw.limit_in_bytes',
form['swlimit'])
flash(u'Swap limit updated for %s!' % container, 'success')
if (not form['cpus'] and form['cpus'] != cfg['cpus']) or \
(form['cpus'] != cfg['cpus'] and
re.match('^[0-9,-]+$', form['cpus'])):
lwp.push_config_value('lxc.cgroup.cpuset.cpus', form['cpus'],
container=container)
if info["state"].lower() != 'stopped':
lxc.cgroup(container, 'lxc.cgroup.cpuset.cpus',
form['cpus'])
flash(u'CPUs updated for %s!' % container, 'success')
if (not form['shares'] and form['shares'] != cfg['shares']) or \
(form['shares'] != cfg['shares'] and
re.match('^[0-9]+$', form['shares'])):
lwp.push_config_value('lxc.cgroup.cpu.shares', form['shares'],
container=container)
if info["state"].lower() != 'stopped':
lxc.cgroup(container, 'lxc.cgroup.cpu.shares',
form['shares'])
flash(u'CPU shares updated for %s!' % container, 'success')
if form['rootfs'] != cfg['rootfs'] and \
re.match('^[a-zA-Z0-9_/\-\.]+', form['rootfs']):
lwp.push_config_value('lxc.rootfs', form['rootfs'],
container=container)
flash(u'Rootfs updated!' % container, 'success')
auto = lwp.ls_auto()
if form['autostart'] == 'True' and \
not ('%s.conf' % container) in auto:
try:
os.symlink('/var/lib/lxc/%s/config' % container,
'/etc/lxc/auto/%s.conf' % container)
flash(u'Autostart enabled for %s' % container, 'success')
except OSError:
flash(u'Unable to create symlink \'/etc/lxc/auto/%s.conf\''
% container, 'error')
elif not form['autostart'] and ('%s.conf' % container) in auto:
try:
os.remove('/etc/lxc/auto/%s.conf' % container)
flash(u'Autostart disabled for %s' % container, 'success')
except OSError:
flash(u'Unable to remove symlink', 'error')
info = lxc.info(container)
status = info['state']
pid = info['pid']
infos = {'status': status,
'pid': pid,
'memusg': lwp.memory_usage(container)}
return render_template('edit.html', containers=lxc.ls(),
container=container, infos=infos,
settings=lwp.get_container_settings(container),
host_memory=host_memory)
return render_template('login.html')
@app.route('/settings/lxc-net', methods=['POST', 'GET'])
def lxc_net():
'''
lxc-net (/etc/default/lxc) settings page and actions if form post request
'''
if 'logged_in' in session:
if session['su'] != 'Yes':
return abort(403)
if request.method == 'POST':
if lxc.running() == []:
cfg = lwp.get_net_settings()
ip_regex = '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]' \
'|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4]' \
'[0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|' \
'[01]?[0-9][0-9]?)'
form = {}
try:
form['use'] = request.form['use']
except KeyError:
form['use'] = 'false'
try:
form['bridge'] = request.form['bridge']
except KeyError:
form['bridge'] = None
try:
form['address'] = request.form['address']
except KeyError:
form['address'] = None
try:
form['netmask'] = request.form['netmask']
except KeyError:
form['netmask'] = None
try:
form['network'] = request.form['network']
except KeyError:
form['network'] = None
try:
form['range'] = request.form['range']
except KeyError:
form['range'] = None
try:
form['max'] = request.form['max']
except KeyError:
form['max'] = None
if form['use'] == 'true' and form['use'] != cfg['use']:
lwp.push_net_value('USE_LXC_BRIDGE', 'true')
elif form['use'] == 'false' and form['use'] != cfg['use']:
lwp.push_net_value('USE_LXC_BRIDGE', 'false')
if form['bridge'] and form['bridge'] != cfg['bridge'] \
and re.match('^[a-zA-Z0-9_-]+$', form['bridge']):
lwp.push_net_value('LXC_BRIDGE', form['bridge'])
if form['address'] and form['address'] != cfg['address'] \
and re.match('^%s$' % ip_regex, form['address']):
lwp.push_net_value('LXC_ADDR', form['address'])
if form['netmask'] and form['netmask'] != cfg['netmask'] \
and re.match('^%s$' % ip_regex, form['netmask']):
lwp.push_net_value('LXC_NETMASK', form['netmask'])
if form['network'] and form['network'] != cfg['network'] and \
re.match('^%s(?:/\d{1,2}|)$' % ip_regex,
form['network']):
lwp.push_net_value('LXC_NETWORK', form['network'])
if form['range'] and form['range'] != cfg['range'] and \
re.match('^%s,%s$' % (ip_regex, ip_regex),
form['range']):
lwp.push_net_value('LXC_DHCP_RANGE', form['range'])
if form['max'] and form['max'] != cfg['max'] and \
re.match('^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$',
form['max']):
lwp.push_net_value('LXC_DHCP_MAX', form['max'])
if lwp.net_restart() == 0:
flash(u'LXC Network settings applied successfully!',
'success')
else:
flash(u'Failed to restart LXC networking.', 'error')
else:
flash(u'Stop all containers before restart lxc-net.',
'warning')
return render_template('lxc-net.html', containers=lxc.ls(),
cfg=lwp.get_net_settings(),
running=lxc.running())
return render_template('login.html')
@app.route('/lwp/users', methods=['POST', 'GET'])
def lwp_users():
'''
returns users and get posts request : can edit or add user in page.
this funtction uses sqlite3
'''
if 'logged_in' in session:
if session['su'] != 'Yes':
return abort(403)
try:
trash = request.args.get('trash')
except KeyError:
trash = 0
su_users = query_db("SELECT COUNT(id) as num FROM users "
"WHERE su='Yes'", [], one=True)
if request.args.get('token') == session.get('token') and \
int(trash) == 1 and request.args.get('userid') and \
request.args.get('username'):
nb_users = query_db("SELECT COUNT(id) as num FROM users", [],
one=True)
if nb_users['num'] > 1:
if su_users['num'] <= 1:
su_user = query_db("SELECT username FROM users "
"WHERE su='Yes'", [], one=True)
if su_user['username'] == request.args.get('username'):
flash(u'Can\'t delete the last admin user : %s' %
request.args.get('username'), 'error')
return redirect(url_for('lwp_users'))
g.db.execute("DELETE FROM users WHERE id=? AND username=?",
[request.args.get('userid'),
request.args.get('username')])
g.db.commit()
flash(u'Deleted %s' % request.args.get('username'), 'success')
return redirect(url_for('lwp_users'))
flash(u'Can\'t delete the last user!', 'error')
return redirect(url_for('lwp_users'))
if request.method == 'POST':
users = query_db('SELECT id, name, username, su FROM users '
'ORDER BY id ASC')
if request.form['newUser'] == 'True':
if not request.form['username'] in \
[user['username'] for user in users]:
if re.match('^\w+$', request.form['username']) and \
request.form['password1']:
if request.form['password1'] == \
request.form['password2']:
if request.form['name']:
if re.match('[a-z A-Z0-9]{3,32}',
request.form['name']):
g.db.execute(
"INSERT INTO users "
"(name, username, password) "
"VALUES (?, ?, ?)",
[request.form['name'],
request.form['username'],
hash_passwd(
request.form['password1'])])
g.db.commit()
else:
flash(u'Invalid name!', 'error')
else:
g.db.execute("INSERT INTO users "
"(username, password) VALUES "
"(?, ?)",
[request.form['username'],
hash_passwd(
request.form['password1'])])
g.db.commit()
flash(u'Created %s' % request.form['username'],
'success')
else:
flash(u'No password match', 'error')
else:
flash(u'Invalid username or password!', 'error')
else:
flash(u'Username already exist!', 'error')
elif request.form['newUser'] == 'False':
if request.form['password1'] == request.form['password2']:
if re.match('[a-z A-Z0-9]{3,32}', request.form['name']):
if su_users['num'] <= 1:
su = 'Yes'
else:
try:
su = request.form['su']
except KeyError:
su = 'No'
if not request.form['name']:
g.db.execute("UPDATE users SET name='', su=? "
"WHERE username=?",
[su, request.form['username']])
g.db.commit()
elif request.form['name'] and \
not request.form['password1'] and \
not request.form['password2']:
g.db.execute("UPDATE users SET name=?, su=? "
"WHERE username=?",
[request.form['name'], su,
request.form['username']])
g.db.commit()
elif request.form['name'] and \
request.form['password1'] and \
request.form['password2']:
g.db.execute("UPDATE users SET "
"name=?, password=?, su=? WHERE "
"username=?",
[request.form['name'],
hash_passwd(
request.form['password1']),
su, request.form['username']])
g.db.commit()
elif request.form['password1'] and \
request.form['password2']:
g.db.execute("UPDATE users SET password=?, su=? "
"WHERE username=?",
[hash_passwd(
request.form['password1']),
su, request.form['username']])
g.db.commit()
flash(u'Updated', 'success')
else:
flash(u'Invalid name!', 'error')
else:
flash(u'No password match', 'error')
else:
flash(u'Unknown error!', 'error')
users = query_db("SELECT id, name, username, su FROM users "
"ORDER BY id ASC")
nb_users = query_db("SELECT COUNT(id) as num FROM users", [], one=True)
su_users = query_db("SELECT COUNT(id) as num FROM users "
"WHERE su='Yes'", [], one=True)
return render_template('users.html', containers=lxc.ls(), users=users,
nb_users=nb_users, su_users=su_users)
return render_template('login.html')
@app.route('/checkconfig')
def checkconfig():
'''
returns the display of lxc-checkconfig command
'''
if 'logged_in' in session:
if session['su'] != 'Yes':
return abort(403)
return render_template('checkconfig.html', containers=lxc.ls(),
cfg=lxc.checkconfig())
return render_template('login.html')
@app.route('/action', methods=['GET'])
def action():
'''
manage all actions related to containers
lxc-start, lxc-stop, etc...
'''
if 'logged_in' in session:
if request.args['token'] == session.get('token'):
action = request.args['action']
name = request.args['name']
if action == 'start':
try:
if lxc.start(name) == 0:
# Fix bug : "the container is randomly not
# displayed in overview list after a boot"
time.sleep(1)
flash(u'Container %s started successfully!' % name,
'success')
else:
flash(u'Unable to start %s!' % name, 'error')
except lxc.ContainerAlreadyRunning:
flash(u'Container %s is already running!' % name, 'error')
elif action == 'stop':
try:
if lxc.stop(name) == 0:
flash(u'Container %s stopped successfully!' % name,
'success')
else:
flash(u'Unable to stop %s!' % name, 'error')
except lxc.ContainerNotRunning:
flash(u'Container %s is already stopped!' % name, 'error')
elif action == 'freeze':
try:
if lxc.freeze(name) == 0:
flash(u'Container %s frozen successfully!' % name,
'success')
else:
flash(u'Unable to freeze %s!' % name, 'error')
except lxc.ContainerNotRunning:
flash(u'Container %s not running!' % name, 'error')
elif action == 'unfreeze':
try:
if lxc.unfreeze(name) == 0:
flash(u'Container %s unfrozen successfully!' % name,
'success')
else:
flash(u'Unable to unfeeze %s!' % name, 'error')
except lxc.ContainerNotRunning:
flash(u'Container %s not frozen!' % name, 'error')
elif action == 'destroy':
if session['su'] != 'Yes':
return abort(403)
try:
if lxc.destroy(name) == 0:
flash(u'Container %s destroyed successfully!' % name,
'success')
else:
flash(u'Unable to destroy %s!' % name, 'error')
except lxc.ContainerDoesntExists:
flash(u'The Container %s does not exists!' % name, 'error')
elif action == 'reboot' and name == 'host':
if session['su'] != 'Yes':
return abort(403)
msg = '\v*** LXC Web Panel *** \
\nReboot from web panel'
try:
subprocess.check_call('/sbin/shutdown -r now \'%s\'' % msg,
shell=True)
flash(u'System will now restart!', 'success')
except:
flash(u'System error!', 'error')
try:
if request.args['from'] == 'edit':
return redirect('../%s/edit' % name)
else:
return redirect(url_for('home'))
except:
return redirect(url_for('home'))
return render_template('login.html')
@app.route('/action/create-container', methods=['GET', 'POST'])
def create_container():
'''
verify all forms to create a container
'''
if 'logged_in' in session:
if session['su'] != 'Yes':
return abort(403)
if request.method == 'POST':
name = request.form['name']
template = request.form['template']
command = request.form['command']
if re.match('^(?!^containers$)|[a-zA-Z0-9_-]+$', name):
storage_method = request.form['backingstore']
if storage_method == 'default':
try:
if lxc.create(name, template=template,
xargs=command) == 0:
flash(u'Container %s created successfully!' % name,
'success')
else:
flash(u'Failed to create %s!' % name, 'error')
except lxc.ContainerAlreadyExists:
flash(u'The Container %s is already created!' % name,
'error')
except subprocess.CalledProcessError:
flash(u'Error!' % name, 'error')
elif storage_method == 'directory':
directory = request.form['dir']
if re.match('^/[a-zA-Z0-9_/-]+$', directory) and \
directory != '':
try:
if lxc.create(name, template=template,
storage='dir --dir %s' % directory,
xargs=command) == 0:
flash(u'Container %s created successfully!'
% name, 'success')
else:
flash(u'Failed to create %s!' % name, 'error')
except lxc.ContainerAlreadyExists:
flash(u'The Container %s is already created!'
% name, 'error')
except subprocess.CalledProcessError:
flash(u'Error!' % name, 'error')
elif storage_method == 'zfs':
zfs = request.form['zpoolname']
if re.match('^[a-zA-Z0-9_/-]+$', zfs) and zfs != '':
try:
if lxc.create(name, template=template, storage='zfs --zfsroot %s' % zfs, xargs=command) == 0:
flash(u'Container %s created successfully!' % name, 'success')
else:
flash(u'Failed to create %s!' % name, 'error')
except lxc.ContainerAlreadyExists:
flash(u'The Container %s is already created!' % name, 'error')
except subprocess.CalledProcessError:
flash(u'Error!' % name, 'error')
elif storage_method == 'lvm':
lvname = request.form['lvname']
vgname = request.form['vgname']
fstype = request.form['fstype']
fssize = request.form['fssize']
storage_options = 'lvm'
if re.match('^[a-zA-Z0-9_-]+$', lvname) and lvname != '':
storage_options += ' --lvname %s' % lvname
if re.match('^[a-zA-Z0-9_-]+$', vgname) and vgname != '':
storage_options += ' --vgname %s' % vgname
if re.match('^[a-z0-9]+$', fstype) and fstype != '':
storage_options += ' --fstype %s' % fstype
if re.match('^[0-9][G|M]$', fssize) and fssize != '':
storage_options += ' --fssize %s' % fssize
try:
if lxc.create(name, template=template,
storage=storage_options,
xargs=command) == 0:
flash(u'Container %s created successfully!' % name,
'success')
else:
flash(u'Failed to create %s!' % name, 'error')
except lxc.ContainerAlreadyExists:
flash(u'The container/logical volume %s is '
'already created!' % name, 'error')
except subprocess.CalledProcessError:
flash(u'Error!' % name, 'error')
else:
flash(u'Missing parameters to create container!', 'error')
else:
if name == '':
flash(u'Please enter a container name!', 'error')
else:
flash(u'Invalid name for \"%s\"!' % name, 'error')
return redirect(url_for('home'))
return render_template('login.html')
@app.route('/action/clone-container', methods=['GET', 'POST'])
def clone_container():
'''
verify all forms to clone a container
'''
if 'logged_in' in session:
if session['su'] != 'Yes':
return abort(403)
if request.method == 'POST':
orig = request.form['orig']
name = request.form['name']
try:
snapshot = request.form['snapshot']
if snapshot == 'True':
snapshot = True
except KeyError:
snapshot = False
if re.match('^(?!^containers$)|[a-zA-Z0-9_-]+$', name):
out = None
try:
out = lxc.clone(orig=orig, new=name, snapshot=snapshot)
except lxc.ContainerAlreadyExists:
flash(u'The Container %s already exists!' % name, 'error')
except subprocess.CalledProcessError:
flash(u'Can\'t snapshot a directory', 'error')
if out and out == 0:
flash(u'Container %s cloned into %s successfully!'
% (orig, name), 'success')
elif out and out != 0:
flash(u'Failed to clone %s into %s!' % (orig, name),
'error')
else:
if name == '':
flash(u'Please enter a container name!', 'error')
else:
flash(u'Invalid name for \"%s\"!' % name, 'error')
return redirect(url_for('home'))
return render_template('login.html')
@app.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
request_username = request.form['username']
request_passwd = hash_passwd(request.form['password'])
current_url = request.form['url']
user = query_db('select name, username, su from users where username=?'
'and password=?', [request_username, request_passwd],
one=True)
if user:
session['logged_in'] = True
session['token'] = get_token()
session['last_activity'] = int(time.time())
session['username'] = user['username']
session['name'] = user['name']
session['su'] = user['su']
flash(u'You are logged in!', 'success')
if current_url == url_for('login'):
return redirect(url_for('home'))
return redirect(current_url)
flash(u'Invalid username or password!', 'error')
return render_template('login.html')
@app.route('/logout')
def logout():
session.pop('logged_in', None)
session.pop('token', None)
session.pop('last_activity', None)
session.pop('username', None)
session.pop('name', None)
session.pop('su', None)
flash(u'You are logged out!', 'success')
return redirect(url_for('login'))
@app.route('/_refresh_cpu_host')
def refresh_cpu_host():
if 'logged_in' in session:
return lwp.host_cpu_percent()
@app.route('/_refresh_uptime_host')
def refresh_uptime_host():
if 'logged_in' in session:
return jsonify(lwp.host_uptime())
@app.route('/_refresh_disk_host')
def refresh_disk_host():
if 'logged_in' in session:
return jsonify(lwp.host_disk_usage(partition=config.get('overview',
'partition')))
@app.route('/_refresh_memory_<name>')
def refresh_memory_containers(name=None):
if 'logged_in' in session:
if name == 'containers':
containers_running = lxc.running()
containers = []
for container in containers_running:
container = container.replace(' (auto)', '')
containers.append({'name': container,
'memusg': lwp.memory_usage(container)})
return jsonify(data=containers)
elif name == 'host':
return jsonify(lwp.host_memory_usage())
return jsonify({'memusg': lwp.memory_usage(name)})
@app.route('/_check_version')
def check_version():
if 'logged_in' in session:
return jsonify(lwp.check_version())
def hash_passwd(passwd):
return hashlib.sha512(passwd.encode()).hexdigest()
def get_token():
return hashlib.md5(str(time.time()).encode()).hexdigest()
def query_db(query, args=(), one=False):
cur = g.db.execute(query, args)
rv = [dict((cur.description[idx][0], value)
for idx, value in enumerate(row)) for row in cur.fetchall()]
return (rv[0] if rv else None) if one else rv
def check_session_limit():
if 'logged_in' in session and session.get('last_activity') is not None:
now = int(time.time())
limit = now - 60 * int(config.get('session', 'time'))
last_activity = session.get('last_activity')
if last_activity < limit:
flash(u'Session timed out !', 'info')
logout()
else:
session['last_activity'] = now
if __name__ == '__main__':
# Fork once
if os.fork() != 0:
os._exit(0)
# Create new session
os.setsid()
if os.fork() != 0:
os._exit(0)
fd = os.open('/dev/null', os.O_RDONLY)
os.dup2(fd, sys.__stdin__.fileno())
os.close(fd)
with open('/var/run/lwp.pid', 'w') as pid_fo:
pid_fo.write(str(os.getpid()) + '\n')
app.run(host=app.config['ADDRESS'], port=app.config['PORT'])