mirror of
https://github.com/cwinfo/powerdns-admin.git
synced 2024-11-08 22:50:26 +00:00
592 lines
24 KiB
Python
592 lines
24 KiB
Python
import os
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import base64
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import traceback
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import bcrypt
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import pyotp
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import ldap
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import ldap.filter
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from flask import current_app
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from flask_login import AnonymousUserMixin
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from .base import db
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from .role import Role
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from .setting import Setting
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from .domain_user import DomainUser
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class Anonymous(AnonymousUserMixin):
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def __init__(self):
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self.username = 'Anonymous'
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class User(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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username = db.Column(db.String(64), index=True, unique=True)
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password = db.Column(db.String(64))
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firstname = db.Column(db.String(64))
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lastname = db.Column(db.String(64))
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email = db.Column(db.String(128))
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otp_secret = db.Column(db.String(16))
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confirmed = db.Column(db.SmallInteger, nullable=False, default=0)
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role_id = db.Column(db.Integer, db.ForeignKey('role.id'))
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def __init__(self,
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id=None,
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username=None,
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password=None,
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plain_text_password=None,
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firstname=None,
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lastname=None,
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role_id=None,
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email=None,
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otp_secret=None,
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confirmed=False,
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reload_info=True):
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self.id = id
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self.username = username
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self.password = password
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self.plain_text_password = plain_text_password
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self.firstname = firstname
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self.lastname = lastname
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self.role_id = role_id
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self.email = email
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self.otp_secret = otp_secret
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self.confirmed = confirmed
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if reload_info:
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user_info = self.get_user_info_by_id(
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) if id else self.get_user_info_by_username()
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if user_info:
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self.id = user_info.id
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self.username = user_info.username
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self.firstname = user_info.firstname
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self.lastname = user_info.lastname
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self.email = user_info.email
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self.role_id = user_info.role_id
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self.otp_secret = user_info.otp_secret
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self.confirmed = user_info.confirmed
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def is_authenticated(self):
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return True
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def is_active(self):
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return True
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def is_anonymous(self):
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return False
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def get_id(self):
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try:
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return unicode(self.id) # python 2
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except NameError:
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return str(self.id) # python 3
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def __repr__(self):
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return '<User {0}>'.format(self.username)
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def get_totp_uri(self):
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return "otpauth://totp/PowerDNS-Admin:{0}?secret={1}&issuer=PowerDNS-Admin".format(
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self.username, self.otp_secret)
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def verify_totp(self, token):
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totp = pyotp.TOTP(self.otp_secret)
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return totp.verify(token)
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def get_hashed_password(self, plain_text_password=None):
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# Hash a password for the first time
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# (Using bcrypt, the salt is saved into the hash itself)
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if plain_text_password is None:
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return plain_text_password
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pw = plain_text_password if plain_text_password else self.plain_text_password
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return bcrypt.hashpw(pw.encode('utf-8'), bcrypt.gensalt())
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def check_password(self, hashed_password):
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# Check hashed password. Using bcrypt, the salt is saved into the hash itself
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if (self.plain_text_password):
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return bcrypt.checkpw(self.plain_text_password.encode('utf-8'),
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hashed_password.encode('utf-8'))
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return False
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def get_user_info_by_id(self):
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user_info = User.query.get(int(self.id))
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return user_info
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def get_user_info_by_username(self):
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user_info = User.query.filter(User.username == self.username).first()
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return user_info
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def ldap_init_conn(self):
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ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_NEVER)
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conn = ldap.initialize(Setting().get('ldap_uri'))
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conn.set_option(ldap.OPT_REFERRALS, ldap.OPT_OFF)
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conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
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conn.set_option(ldap.OPT_X_TLS, ldap.OPT_X_TLS_DEMAND)
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conn.set_option(ldap.OPT_X_TLS_DEMAND, True)
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conn.set_option(ldap.OPT_DEBUG_LEVEL, 255)
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conn.protocol_version = ldap.VERSION3
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return conn
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def ldap_search(self, searchFilter, baseDN):
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searchScope = ldap.SCOPE_SUBTREE
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retrieveAttributes = None
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try:
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conn = self.ldap_init_conn()
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if Setting().get('ldap_type') == 'ad':
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conn.simple_bind_s(
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"{0}@{1}".format(self.username,
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Setting().get('ldap_domain')),
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self.password)
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else:
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conn.simple_bind_s(Setting().get('ldap_admin_username'),
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Setting().get('ldap_admin_password'))
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ldap_result_id = conn.search(baseDN, searchScope, searchFilter,
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retrieveAttributes)
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result_set = []
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while 1:
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result_type, result_data = conn.result(ldap_result_id, 0)
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if (result_data == []):
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break
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else:
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if result_type == ldap.RES_SEARCH_ENTRY:
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result_set.append(result_data)
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return result_set
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except ldap.LDAPError as e:
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current_app.logger.error(e)
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current_app.logger.debug('baseDN: {0}'.format(baseDN))
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current_app.logger.debug(traceback.format_exc())
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def ldap_auth(self, ldap_username, password):
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try:
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conn = self.ldap_init_conn()
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conn.simple_bind_s(ldap_username, password)
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return True
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except ldap.LDAPError as e:
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current_app.logger.error(e)
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return False
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def ad_recursive_groups(self, groupDN):
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"""
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Recursively list groups belonging to a group. It will allow checking deep in the Active Directory
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whether a user is allowed to enter or not
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"""
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LDAP_BASE_DN = Setting().get('ldap_base_dn')
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groupSearchFilter = "(&(objectcategory=group)(member=%s))" % ldap.filter.escape_filter_chars(
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groupDN)
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result = [groupDN]
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try:
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groups = self.ldap_search(groupSearchFilter, LDAP_BASE_DN)
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for group in groups:
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result += [group[0][0]]
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if 'memberOf' in group[0][1]:
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for member in group[0][1]['memberOf']:
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result += self.ad_recursive_groups(
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member.decode("utf-8"))
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return result
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except ldap.LDAPError as e:
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current_app.logger.exception("Recursive AD Group search error")
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return result
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def is_validate(self, method, src_ip='', trust_user=False):
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"""
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Validate user credential
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"""
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role_name = 'User'
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if method == 'LOCAL':
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user_info = User.query.filter(
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User.username == self.username).first()
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if user_info:
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if trust_user or (user_info.password and self.check_password(
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user_info.password)):
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current_app.logger.info(
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'User "{0}" logged in successfully. Authentication request from {1}'
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.format(self.username, src_ip))
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return True
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current_app.logger.error(
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'User "{0}" inputted a wrong password. Authentication request from {1}'
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.format(self.username, src_ip))
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return False
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current_app.logger.warning(
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'User "{0}" does not exist. Authentication request from {1}'.
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format(self.username, src_ip))
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return False
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if method == 'LDAP':
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LDAP_TYPE = Setting().get('ldap_type')
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LDAP_BASE_DN = Setting().get('ldap_base_dn')
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LDAP_FILTER_BASIC = Setting().get('ldap_filter_basic')
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LDAP_FILTER_USERNAME = Setting().get('ldap_filter_username')
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LDAP_FILTER_GROUP = Setting().get('ldap_filter_group')
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LDAP_FILTER_GROUPNAME = Setting().get('ldap_filter_groupname')
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LDAP_ADMIN_GROUP = Setting().get('ldap_admin_group')
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LDAP_OPERATOR_GROUP = Setting().get('ldap_operator_group')
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LDAP_USER_GROUP = Setting().get('ldap_user_group')
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LDAP_GROUP_SECURITY_ENABLED = Setting().get('ldap_sg_enabled')
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# validate AD user password
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if Setting().get('ldap_type') == 'ad' and not trust_user:
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ldap_username = "{0}@{1}".format(self.username,
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Setting().get('ldap_domain'))
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if not self.ldap_auth(ldap_username, self.password):
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current_app.logger.error(
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'User "{0}" input a wrong LDAP password. Authentication request from {1}'
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.format(self.username, src_ip))
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return False
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searchFilter = "(&({0}={1}){2})".format(LDAP_FILTER_USERNAME,
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self.username,
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LDAP_FILTER_BASIC)
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current_app.logger.debug('Ldap searchFilter {0}'.format(searchFilter))
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ldap_result = self.ldap_search(searchFilter, LDAP_BASE_DN)
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current_app.logger.debug('Ldap search result: {0}'.format(ldap_result))
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if not ldap_result:
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current_app.logger.warning(
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'LDAP User "{0}" does not exist. Authentication request from {1}'
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.format(self.username, src_ip))
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return False
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else:
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try:
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ldap_username = ldap.filter.escape_filter_chars(
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ldap_result[0][0][0])
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if Setting().get('ldap_type') != 'ad' and not trust_user:
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# validate ldap user password
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if not self.ldap_auth(ldap_username, self.password):
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current_app.logger.error(
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'User "{0}" input a wrong LDAP password. Authentication request from {1}'
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.format(self.username, src_ip))
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return False
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# check if LDAP_GROUP_SECURITY_ENABLED is True
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# user can be assigned to ADMIN or USER role.
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if LDAP_GROUP_SECURITY_ENABLED:
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try:
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if LDAP_TYPE == 'ldap':
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groupSearchFilter = "(&({0}={1}){2})".format(LDAP_FILTER_GROUPNAME, ldap_username, LDAP_FILTER_GROUP)
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current_app.logger.debug('Ldap groupSearchFilter {0}'.format(groupSearchFilter))
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if (self.ldap_search(groupSearchFilter,
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LDAP_ADMIN_GROUP)):
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role_name = 'Administrator'
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows admin access to PowerDNS-Admin'
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.format(self.username,
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LDAP_ADMIN_GROUP))
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elif (self.ldap_search(groupSearchFilter,
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LDAP_OPERATOR_GROUP)):
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role_name = 'Operator'
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows operator access to PowerDNS-Admin'
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.format(self.username,
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LDAP_OPERATOR_GROUP))
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elif (self.ldap_search(groupSearchFilter,
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LDAP_USER_GROUP)):
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows user access to PowerDNS-Admin'
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.format(self.username,
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LDAP_USER_GROUP))
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else:
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current_app.logger.error(
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'User {0} is not part of the "{1}", "{2}" or "{3}" groups that allow access to PowerDNS-Admin'
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.format(self.username,
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LDAP_ADMIN_GROUP,
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LDAP_OPERATOR_GROUP,
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LDAP_USER_GROUP))
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return False
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elif LDAP_TYPE == 'ad':
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user_ldap_groups = []
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user_ad_member_of = ldap_result[0][0][1].get(
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'memberOf')
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if not user_ad_member_of:
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current_app.logger.error(
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'User {0} does not belong to any group while LDAP_GROUP_SECURITY_ENABLED is ON'
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.format(self.username))
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return False
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for group in [
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g.decode("utf-8")
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for g in user_ad_member_of
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]:
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user_ldap_groups += self.ad_recursive_groups(
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group)
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if (LDAP_ADMIN_GROUP in user_ldap_groups):
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role_name = 'Administrator'
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows admin access to PowerDNS-Admin'
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.format(self.username,
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LDAP_ADMIN_GROUP))
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elif (LDAP_OPERATOR_GROUP in user_ldap_groups):
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role_name = 'Operator'
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows operator access to PowerDNS-Admin'
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.format(self.username,
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LDAP_OPERATOR_GROUP))
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elif (LDAP_USER_GROUP in user_ldap_groups):
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current_app.logger.info(
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'User {0} is part of the "{1}" group that allows user access to PowerDNS-Admin'
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.format(self.username,
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LDAP_USER_GROUP))
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else:
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current_app.logger.error(
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'User {0} is not part of the "{1}", "{2}" or "{3}" groups that allow access to PowerDNS-Admin'
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.format(self.username,
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LDAP_ADMIN_GROUP,
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LDAP_OPERATOR_GROUP,
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LDAP_USER_GROUP))
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return False
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else:
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current_app.logger.error('Invalid LDAP type')
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return False
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except Exception as e:
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current_app.logger.error(
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'LDAP group lookup for user "{0}" has failed. Authentication request from {1}'
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.format(self.username, src_ip))
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current_app.logger.debug(traceback.format_exc())
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return False
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except Exception as e:
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current_app.logger.error('Wrong LDAP configuration. {0}'.format(e))
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current_app.logger.debug(traceback.format_exc())
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return False
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# create user if not exist in the db
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if not User.query.filter(User.username == self.username).first():
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self.firstname = self.username
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self.lastname = ''
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try:
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# try to get user's firstname, lastname and email address from LDAP attributes
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if LDAP_TYPE == 'ldap':
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self.firstname = ldap_result[0][0][1]['givenName'][
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0].decode("utf-8")
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self.lastname = ldap_result[0][0][1]['sn'][0].decode(
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"utf-8")
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self.email = ldap_result[0][0][1]['mail'][0].decode(
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"utf-8")
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elif LDAP_TYPE == 'ad':
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self.firstname = ldap_result[0][0][1]['name'][
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0].decode("utf-8")
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self.email = ldap_result[0][0][1]['userPrincipalName'][
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0].decode("utf-8")
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except Exception as e:
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current_app.logger.warning(
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"Reading ldap data threw an exception {0}".format(e))
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current_app.logger.debug(traceback.format_exc())
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# first register user will be in Administrator role
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if User.query.count() == 0:
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self.role_id = Role.query.filter_by(
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name='Administrator').first().id
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else:
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self.role_id = Role.query.filter_by(
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name=role_name).first().id
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self.create_user()
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current_app.logger.info('Created user "{0}" in the DB'.format(
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self.username))
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# user already exists in database, set their role based on group membership (if enabled)
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if LDAP_GROUP_SECURITY_ENABLED:
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self.set_role(role_name)
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return True
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else:
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current_app.logger.error('Unsupported authentication method')
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return False
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def create_user(self):
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"""
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If user logged in successfully via LDAP in the first time
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We will create a local user (in DB) in order to manage user
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profile such as name, roles,...
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"""
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# Set an invalid password hash for non local users
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self.password = '*'
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db.session.add(self)
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db.session.commit()
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def create_local_user(self):
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"""
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Create local user witch stores username / password in the DB
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"""
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# check if username existed
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user = User.query.filter(User.username == self.username).first()
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if user:
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return {'status': False, 'msg': 'Username is already in use'}
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# check if email existed
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user = User.query.filter(User.email == self.email).first()
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if user:
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return {'status': False, 'msg': 'Email address is already in use'}
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# first register user will be in Administrator role
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self.role_id = Role.query.filter_by(name='User').first().id
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if User.query.count() == 0:
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self.role_id = Role.query.filter_by(
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name='Administrator').first().id
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self.password = self.get_hashed_password(
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self.plain_text_password) if self.plain_text_password else '*'
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if self.password and self.password != '*':
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self.password = self.password.decode("utf-8")
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db.session.add(self)
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db.session.commit()
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return {'status': True, 'msg': 'Created user successfully'}
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def update_local_user(self):
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"""
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Update local user
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"""
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# Sanity check - account name
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if self.username == "":
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return {'status': False, 'msg': 'No user name specified'}
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# read user and check that it exists
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user = User.query.filter(User.username == self.username).first()
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if not user:
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return {'status': False, 'msg': 'User does not exist'}
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# check if new email exists (only if changed)
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if user.email != self.email:
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checkuser = User.query.filter(User.email == self.email).first()
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if checkuser:
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return {
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'status': False,
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'msg': 'New email address is already in use'
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}
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user.firstname = self.firstname
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user.lastname = self.lastname
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user.email = self.email
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# store new password hash (only if changed)
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if self.plain_text_password != "":
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user.password = self.get_hashed_password(
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self.plain_text_password).decode("utf-8")
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db.session.commit()
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return {'status': True, 'msg': 'User updated successfully'}
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def update_profile(self, enable_otp=None):
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"""
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Update user profile
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|
"""
|
|
|
|
user = User.query.filter(User.username == self.username).first()
|
|
if not user:
|
|
return False
|
|
|
|
user.firstname = self.firstname if self.firstname else user.firstname
|
|
user.lastname = self.lastname if self.lastname else user.lastname
|
|
user.password = self.get_hashed_password(
|
|
self.plain_text_password).decode(
|
|
"utf-8") if self.plain_text_password else user.password
|
|
|
|
if self.email:
|
|
# Can not update to a new email that
|
|
# already been used.
|
|
existing_email = User.query.filter(
|
|
User.email == self.email,
|
|
User.username != self.username).first()
|
|
if existing_email:
|
|
return False
|
|
# If need to verify new email,
|
|
# update the "confirmed" status.
|
|
if user.email != self.email:
|
|
user.email = self.email
|
|
if Setting().get('verify_user_email'):
|
|
user.confirmed = 0
|
|
|
|
if enable_otp is not None:
|
|
user.otp_secret = ""
|
|
|
|
if enable_otp == True:
|
|
# generate the opt secret key
|
|
user.otp_secret = base64.b32encode(os.urandom(10)).decode('utf-8')
|
|
|
|
try:
|
|
db.session.add(user)
|
|
db.session.commit()
|
|
return True
|
|
except Exception:
|
|
db.session.rollback()
|
|
return False
|
|
|
|
def update_confirmed(self, confirmed):
|
|
"""
|
|
Update user email confirmation status
|
|
"""
|
|
self.confirmed = confirmed
|
|
db.session.commit()
|
|
|
|
def get_domains(self):
|
|
"""
|
|
Get list of domains which the user is granted to have
|
|
access.
|
|
|
|
Note: This doesn't include the permission granting from Account
|
|
which user belong to
|
|
"""
|
|
|
|
return self.get_domain_query().all()
|
|
|
|
def delete(self):
|
|
"""
|
|
Delete a user
|
|
"""
|
|
# revoke all user privileges first
|
|
self.revoke_privilege()
|
|
|
|
try:
|
|
User.query.filter(User.username == self.username).delete()
|
|
db.session.commit()
|
|
return True
|
|
except Exception as e:
|
|
db.session.rollback()
|
|
current_app.logger.error('Cannot delete user {0} from DB. DETAIL: {1}'.format(
|
|
self.username, e))
|
|
return False
|
|
|
|
def revoke_privilege(self):
|
|
"""
|
|
Revoke all privileges from a user
|
|
"""
|
|
user = User.query.filter(User.username == self.username).first()
|
|
|
|
if user:
|
|
user_id = user.id
|
|
try:
|
|
DomainUser.query.filter(DomainUser.user_id == user_id).delete()
|
|
db.session.commit()
|
|
return True
|
|
except Exception as e:
|
|
db.session.rollback()
|
|
current_app.logger.error(
|
|
'Cannot revoke user {0} privileges. DETAIL: {1}'.format(
|
|
self.username, e))
|
|
return False
|
|
return False
|
|
|
|
def set_role(self, role_name):
|
|
role = Role.query.filter(Role.name == role_name).first()
|
|
if role:
|
|
user = User.query.filter(User.username == self.username).first()
|
|
user.role_id = role.id
|
|
db.session.commit()
|
|
return {'status': True, 'msg': 'Set user role successfully'}
|
|
else:
|
|
return {'status': False, 'msg': 'Role does not exist'}
|