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bk-dss/dss.py

210 lines
6.5 KiB
Python
Executable File

#!/usr/bin/env python
from flask import Flask, render_template, redirect, url_for, session
from flask_wtf import Form
import ldap
import ldap.modlist
from passlib.hash import ldap_salted_sha1
from redis import Redis
import uuid
from wtforms.fields import IntegerField, PasswordField, SelectField, StringField, SubmitField
from wtforms.validators import EqualTo, Required
app = Flask(__name__)
app.config.from_pyfile('config.cfg')
app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True
rdb = Redis(host=app.config.get('REDIS_HOST', '127.0.0.1'), password=app.config.get('REDIS_PASSWD'))
ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_DEMAND)
ldap.set_option(ldap.OPT_REFERRALS, 0)
if 'LDAP_CA' in app.config.keys():
ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, app.config.get('LDAP_CA'))
class ReadOnlyField(StringField):
def __call__(self, *args, **kwargs):
kwargs.setdefault('readonly', True)
return super(ReadOnlyField, self).__call__(*args, **kwargs)
class CreateForm(Form):
user = StringField('Username', validators = [Required()])
uid = IntegerField('User ID', validators = [Required()])
gn = StringField('Given Name', validators = [Required()])
sn = StringField('Family Name', validators = [Required()])
pwd1 = PasswordField('Password', validators = [Required()])
pwd2 = PasswordField('Password (repeat)', validators = [Required(), EqualTo('pwd1', "Passwords must match")])
submit = SubmitField('Submit')
class EditForm(Form):
user = ReadOnlyField('Username')
pwd1 = PasswordField('New Password', validators = [Required()])
pwd2 = PasswordField('New Password (repeat)', validators = [Required(), EqualTo('pwd1', "Passwords must match")])
submit = SubmitField('Submit')
class LoginForm(Form):
user = StringField('Username', validators=[Required()])
pswd = PasswordField('Password', validators=[Required()])
submit = SubmitField('Login')
def makeSecret(password):
return ldap_salted_sha1.encrypt(password)
def isAdmin():
return isLoggedin() and rdb.hget(session['uuid'], 'user') in app.config.get('ADMINS', [])
def isLoggedin():
return 'uuid' in session and rdb.exists(session['uuid'])
def buildNav():
nav = []
if isLoggedin():
nav.append(('Edit own Account', 'edit'))
if isAdmin():
nav.append(('List Accounts', 'list_users'))
nav.append(('Create Account', 'create'))
nav.append(('Logout', 'logout'))
else:
nav.append(('Login', 'login'))
return nav
@app.route('/')
def index():
return render_template('index.html', nav=buildNav())
@app.route('/create', methods=['GET', 'POST'])
def create():
if not isLoggedin():
return render_template('error.html', message="You are not logged in. Please log in first.", nav=buildNav())
form = CreateForm()
if form.validate_on_submit():
l = ldap.initialize(app.config.get('LDAP_URI', 'ldaps://127.0.0.1'))
try:
l.simple_bind_s(rdb.hget(session['uuid'], 'user'), rdb.hget(session['uuid'], 'pswd'))
d = {
'user' : form.user.data,
'uid' : form.uid.data,
'gn' : form.gn.data,
'sn' : form.sn.data,
'pass' : makeSecret(form.pwd1.data)
}
# add user
user_dn = app.config.get('USER_DN').format(**d)
attrs = {}
for k,v in app.config.get('USER_ATTRS').iteritems():
if isinstance(v, str):
attrs[k] = v.format(**d)
elif isinstance(v, list):
attrs[k] = []
for e in v:
attrs[k].append(e.format(**d))
l.add_s(user_dn, ldap.modlist.addModlist(attrs))
# add user to group
group_dn = app.config.get('GROUP_DN').format(**d)
l.modify_s(group_dn, [(ldap.MOD_ADD, 'memberUid', str(form.user.data))])
except ldap.LDAPError as e:
l.unbind_s()
message = "LDAP Error"
if 'desc' in e.message:
message = message + " " + e.message['desc']
if 'info' in e.message:
message = message + ": " + e.message['info']
return render_template('error.html', message=message, nav=buildNav())
else:
l.unbind_s()
return render_template('success.html', message="User successfully created.", nav=buildNav())
return render_template('create.html', form=form, nav=buildNav())
@app.route('/edit', methods=['GET', 'POST'])
def edit():
if not isLoggedin():
return render_template('error.html', message="You are not logged in. Please log in first.", nav=buildNav())
form = EditForm()
user = rdb.hget(session['uuid'], 'user')
if form.validate_on_submit():
opwd = rdb.hget(session['uuid'], 'pswd')
npwd = form.pwd1.data
l = ldap.initialize(app.config.get('LDAP_URI', 'ldaps://127.0.0.1'))
try:
l.simple_bind_s(user, opwd)
l.passwd_s(user, opwd, npwd)
except ldap.INVALID_CREDENTIALS as e:
form.user.errors.append(e.message['desc'])
l.unbind_s()
return render_template('edit.html', form=form, nav=buildNav())
else:
rdb.hset(session['uuid'], 'pswd', npwd)
l.unbind_s()
return render_template('success.html', message="User successfully edited.", nav=buildNav())
form.user.data = user
return render_template('edit.html', form=form, nav=buildNav())
@app.route('/list')
def list_users():
if not isLoggedin():
return render_template('error.html', message="You are not logged in. Please log in first.", nav=buildNav())
l = ldap.initialize(app.config.get('LDAP_URI', 'ldaps://127.0.0.1'))
l.simple_bind_s(rdb.hget(session['uuid'], 'user'), rdb.hget(session['uuid'], 'pswd'))
sr = l.search_s(app.config.get('LDAP_BASE'), ldap.SCOPE_SUBTREE, '(objectClass=posixAccount)', ['cn'])
return render_template('list.html', users=sr, nav=buildNav())
@app.route('/login', methods=['GET', 'POST'])
def login():
form = LoginForm()
if form.validate_on_submit():
user = ""
if form.user.data.endswith(app.config.get('LDAP_BASE','')):
user = form.user.data
else:
user = app.config.get('USER_DN').format(user=form.user.data)
pswd = form.pswd.data
l = ldap.initialize(app.config.get('LDAP_URI', 'ldaps://127.0.0.1'))
try:
l.simple_bind_s(user, pswd)
except ldap.INVALID_CREDENTIALS as e:
form.pswd.errors.append(e.message['desc'])
l.unbind_s()
return render_template('login.html', form=form, nav=buildNav())
l.unbind_s()
session['uuid'] = str(uuid.uuid4())
credentials = { 'user': user, 'pswd': pswd }
rdb.hmset(session['uuid'], credentials)
# TODO refactor this and reuse
rdb.expire(session['uuid'], app.config.get('SESSION_TIMEOUT', 3600))
return redirect(url_for('index'))
return render_template('login.html', form=form, nav=buildNav())
@app.route('/logout')
def logout():
if 'uuid' in session:
rdb.delete(session['uuid'])
del session['uuid']
return redirect(url_for('index'))
if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000)