from __future__ import unicode_literals # at top of module import os import sys import base64 import requests import json from gunicorn.config import make_settings from cryptography.fernet import Fernet from flask import current_app from flask_script import Manager, Command, Option, prompt_pass from flask_migrate import Migrate, MigrateCommand, stamp from flask_script.commands import ShowUrls, Clean, Server from lemur.dns_providers.cli import manager as dns_provider_manager from lemur.sources.cli import manager as source_manager from lemur.policies.cli import manager as policy_manager from lemur.reporting.cli import manager as report_manager from lemur.endpoints.cli import manager as endpoint_manager from lemur.certificates.cli import manager as certificate_manager from lemur.notifications.cli import manager as notification_manager from lemur.pending_certificates.cli import manager as pending_certificate_manager from lemur import database from lemur.users import service as user_service from lemur.roles import service as role_service from lemur.policies import service as policy_service from lemur.notifications import service as notification_service from lemur.common.utils import validate_conf from lemur import create_app # Needed to be imported so that SQLAlchemy create_all can find our models from lemur.users.models import User # noqa from lemur.roles.models import Role # noqa from lemur.authorities.models import Authority # noqa from lemur.certificates.models import Certificate # noqa from lemur.destinations.models import Destination # noqa from lemur.domains.models import Domain # noqa from lemur.notifications.models import Notification # noqa from lemur.sources.models import Source # noqa from lemur.logs.models import Log # noqa from lemur.endpoints.models import Endpoint # noqa from lemur.policies.models import RotationPolicy # noqa from lemur.pending_certificates.models import PendingCertificate # noqa manager = Manager(create_app) manager.add_option('-c', '--config', dest='config') migrate = Migrate(create_app) REQUIRED_VARIABLES = [ 'LEMUR_SECURITY_TEAM_EMAIL', 'LEMUR_DEFAULT_ORGANIZATIONAL_UNIT', 'LEMUR_DEFAULT_ORGANIZATION', 'LEMUR_DEFAULT_LOCATION', 'LEMUR_DEFAULT_COUNTRY', 'LEMUR_DEFAULT_STATE', 'SQLALCHEMY_DATABASE_URI' ] KEY_LENGTH = 40 DEFAULT_CONFIG_PATH = '~/.lemur/lemur.conf.py' DEFAULT_SETTINGS = 'lemur.conf.server' SETTINGS_ENVVAR = 'LEMUR_CONF' CONFIG_TEMPLATE = """ # This is just Python which means you can inherit and tweak settings import os _basedir = os.path.abspath(os.path.dirname(__file__)) THREADS_PER_PAGE = 8 # General # These will need to be set to `True` if you are developing locally CORS = False debug = False # this is the secret key used by flask session management SECRET_KEY = '{flask_secret_key}' # You should consider storing these separately from your config LEMUR_TOKEN_SECRET = '{secret_token}' LEMUR_ENCRYPTION_KEYS = '{encryption_key}' # List of domain regular expressions that non-admin users can issue LEMUR_WHITELISTED_DOMAINS = [] # Mail Server LEMUR_EMAIL = '' LEMUR_SECURITY_TEAM_EMAIL = [] # Certificate Defaults LEMUR_DEFAULT_COUNTRY = '' LEMUR_DEFAULT_STATE = '' LEMUR_DEFAULT_LOCATION = '' LEMUR_DEFAULT_ORGANIZATION = '' LEMUR_DEFAULT_ORGANIZATIONAL_UNIT = '' # Authentication Providers ACTIVE_PROVIDERS = [] # Metrics Providers METRIC_PROVIDERS = [] # Logging LOG_LEVEL = "DEBUG" LOG_FILE = "lemur.log" # Database # modify this if you are not using a local database SQLALCHEMY_DATABASE_URI = 'postgresql://lemur:lemur@localhost:5432/lemur' # AWS #LEMUR_INSTANCE_PROFILE = 'Lemur' # Issuers # These will be dependent on which 3rd party that Lemur is # configured to use. # VERISIGN_URL = '' # VERISIGN_PEM_PATH = '' # VERISIGN_FIRST_NAME = '' # VERISIGN_LAST_NAME = '' # VERSIGN_EMAIL = '' """ @MigrateCommand.command def create(): database.db.create_all() stamp(revision='head') @MigrateCommand.command def drop_all(): database.db.drop_all() @manager.shell def make_shell_context(): """ Creates a python REPL with several default imports in the context of the current_app :return: """ return dict(current_app=current_app) def generate_settings(): """ This command is run when ``default_path`` doesn't exist, or ``init`` is run and returns a string representing the default data to put into their settings file. """ output = CONFIG_TEMPLATE.format( # we use Fernet.generate_key to make sure that the key length is # compatible with Fernet encryption_key=Fernet.generate_key().decode('utf-8'), secret_token=base64.b64encode(os.urandom(KEY_LENGTH)).decode('utf-8'), flask_secret_key=base64.b64encode(os.urandom(KEY_LENGTH)).decode('utf-8'), ) return output class InitializeApp(Command): """ This command will bootstrap our database with any destinations as specified by our config. Additionally a Lemur user will be created as a default user and be used when certificates are discovered by Lemur. """ option_list = ( Option('-p', '--password', dest='password'), ) def run(self, password): create() user = user_service.get_by_username("lemur") admin_role = role_service.get_by_name('admin') if admin_role: sys.stdout.write("[-] Admin role already created, skipping...!\n") else: # we create an admin role admin_role = role_service.create('admin', description='This is the Lemur administrator role.') sys.stdout.write("[+] Created 'admin' role\n") operator_role = role_service.get_by_name('operator') if operator_role: sys.stdout.write("[-] Operator role already created, skipping...!\n") else: # we create an operator role operator_role = role_service.create('operator', description='This is the Lemur operator role.') sys.stdout.write("[+] Created 'operator' role\n") read_only_role = role_service.get_by_name('read-only') if read_only_role: sys.stdout.write("[-] Read only role already created, skipping...!\n") else: # we create an read only role read_only_role = role_service.create('read-only', description='This is the Lemur read only role.') sys.stdout.write("[+] Created 'read-only' role\n") if not user: if not password: sys.stdout.write("We need to set Lemur's password to continue!\n") password = prompt_pass("Password") password1 = prompt_pass("Confirm Password") if password != password1: sys.stderr.write("[!] Passwords do not match!\n") sys.exit(1) user_service.create("lemur", password, 'lemur@nobody.com', True, None, [admin_role]) sys.stdout.write("[+] Created the user 'lemur' and granted it the 'admin' role!\n") else: sys.stdout.write("[-] Default user has already been created, skipping...!\n") intervals = current_app.config.get("LEMUR_DEFAULT_EXPIRATION_NOTIFICATION_INTERVALS", []) sys.stdout.write( "[!] Creating {num} notifications for {intervals} days as specified by LEMUR_DEFAULT_EXPIRATION_NOTIFICATION_INTERVALS\n".format( num=len(intervals), intervals=",".join([str(x) for x in intervals]) ) ) recipients = current_app.config.get('LEMUR_SECURITY_TEAM_EMAIL') sys.stdout.write("[+] Creating expiration email notifications!\n") sys.stdout.write("[!] Using {0} as specified by LEMUR_SECURITY_TEAM_EMAIL for notifications\n".format(recipients)) notification_service.create_default_expiration_notifications("DEFAULT_SECURITY", recipients=recipients) _DEFAULT_ROTATION_INTERVAL = 'default' default_rotation_interval = policy_service.get_by_name(_DEFAULT_ROTATION_INTERVAL) if default_rotation_interval: sys.stdout.write("[-] Default rotation interval policy already created, skipping...!\n") else: days = current_app.config.get("LEMUR_DEFAULT_ROTATION_INTERVAL", 30) sys.stdout.write("[+] Creating default certificate rotation policy of {days} days before issuance.\n".format( days=days)) policy_service.create(days=days, name=_DEFAULT_ROTATION_INTERVAL) sys.stdout.write("[/] Done!\n") class CreateUser(Command): """ This command allows for the creation of a new user within Lemur. """ option_list = ( Option('-u', '--username', dest='username', required=True), Option('-e', '--email', dest='email', required=True), Option('-a', '--active', dest='active', default=True), Option('-r', '--roles', dest='roles', action='append', default=[]) ) def run(self, username, email, active, roles): role_objs = [] for r in roles: role_obj = role_service.get_by_name(r) if role_obj: role_objs.append(role_obj) else: sys.stderr.write("[!] Cannot find role {0}\n".format(r)) sys.exit(1) password1 = prompt_pass("Password") password2 = prompt_pass("Confirm Password") if password1 != password2: sys.stderr.write("[!] Passwords do not match!\n") sys.exit(1) user_service.create(username, password1, email, active, None, role_objs) sys.stdout.write("[+] Created new user: {0}\n".format(username)) class ResetPassword(Command): """ This command allows you to reset a user's password. """ option_list = ( Option('-u', '--username', dest='username', required=True), ) def run(self, username): user = user_service.get_by_username(username) if not user: sys.stderr.write("[!] No user found for username: {0}\n".format(username)) sys.exit(1) sys.stderr.write("[+] Resetting password for {0}\n".format(username)) password1 = prompt_pass("Password") password2 = prompt_pass("Confirm Password") if password1 != password2: sys.stderr.write("[!] Passwords do not match\n") sys.exit(1) user.password = password1 user.hash_password() database.commit() class CreateRole(Command): """ This command allows for the creation of a new role within Lemur """ option_list = ( Option('-n', '--name', dest='name', required=True), Option('-u', '--users', dest='users', default=[]), Option('-d', '--description', dest='description', required=True) ) def run(self, name, users, description): user_objs = [] for u in users: user_obj = user_service.get_by_username(u) if user_obj: user_objs.append(user_obj) else: sys.stderr.write("[!] Cannot find user {0}".format(u)) sys.exit(1) role_service.create(name, description=description, users=users) sys.stdout.write("[+] Created new role: {0}".format(name)) class LemurServer(Command): """ This is the main Lemur server, it runs the flask app with gunicorn and uses any configuration options passed to it. You can pass all standard gunicorn flags to this command as if you were running gunicorn itself. For example: lemur start -w 4 -b 127.0.0.0:8002 Will start gunicorn with 4 workers bound to 127.0.0.0:8002 """ description = 'Run the app within Gunicorn' def get_options(self): settings = make_settings() options = [] for setting, klass in settings.items(): if klass.cli: if klass.action: if klass.action == 'store_const': options.append(Option(*klass.cli, const=klass.const, action=klass.action)) else: options.append(Option(*klass.cli, action=klass.action)) else: options.append(Option(*klass.cli)) return options def run(self, *args, **kwargs): from gunicorn.app.wsgiapp import WSGIApplication app = WSGIApplication() # run startup tasks on an app like object validate_conf(current_app, REQUIRED_VARIABLES) app.app_uri = 'lemur:create_app(config="{0}")'.format(current_app.config.get('CONFIG_PATH')) return app.run() @manager.command def create_config(config_path=None): """ Creates a new configuration file if one does not already exist """ if not config_path: config_path = DEFAULT_CONFIG_PATH config_path = os.path.expanduser(config_path) dir = os.path.dirname(config_path) if not os.path.exists(dir): os.makedirs(dir) config = generate_settings() with open(config_path, 'w') as f: f.write(config) sys.stdout.write("[+] Created a new configuration file {0}\n".format(config_path)) @manager.command def lock(path=None): """ Encrypts a given path. This directory can be used to store secrets needed for normal Lemur operation. This is especially useful for storing secrets needed for communication with third parties (e.g. external certificate authorities). Lemur does not assume anything about the contents of the directory and will attempt to encrypt all files contained within. Currently this has only been tested against plain text files. Path defaults ~/.lemur/keys :param: path """ if not path: path = os.path.expanduser('~/.lemur/keys') dest_dir = os.path.join(path, "encrypted") sys.stdout.write("[!] Generating a new key...\n") key = Fernet.generate_key() if not os.path.exists(dest_dir): sys.stdout.write("[+] Creating encryption directory: {0}\n".format(dest_dir)) os.makedirs(dest_dir) for root, dirs, files in os.walk(os.path.join(path, 'decrypted')): for f in files: source = os.path.join(root, f) dest = os.path.join(dest_dir, f + ".enc") with open(source, 'rb') as in_file, open(dest, 'wb') as out_file: f = Fernet(key) data = f.encrypt(in_file.read()) out_file.write(data) sys.stdout.write("[+] Writing file: {0} Source: {1}\n".format(dest, source)) sys.stdout.write("[+] Keys have been encrypted with key {0}\n".format(key)) @manager.command def unlock(path=None): """ Decrypts all of the files in a given directory with provided password. This is most commonly used during the startup sequence of Lemur allowing it to go from source code to something that can communicate with external services. Path defaults ~/.lemur/keys :param: path """ key = prompt_pass("[!] Please enter the encryption password") if not path: path = os.path.expanduser('~/.lemur/keys') dest_dir = os.path.join(path, "decrypted") source_dir = os.path.join(path, "encrypted") if not os.path.exists(dest_dir): sys.stdout.write("[+] Creating decryption directory: {0}\n".format(dest_dir)) os.makedirs(dest_dir) for root, dirs, files in os.walk(source_dir): for f in files: source = os.path.join(source_dir, f) dest = os.path.join(dest_dir, ".".join(f.split(".")[:-1])) with open(source, 'rb') as in_file, open(dest, 'wb') as out_file: f = Fernet(key) data = f.decrypt(in_file.read()) out_file.write(data) sys.stdout.write("[+] Writing file: {0} Source: {1}\n".format(dest, source)) sys.stdout.write("[+] Keys have been unencrypted!\n") @manager.command def publish_verisign_units(): """ Simple function that queries verisign for API units and posts the mertics to Atlas API for other teams to consume. :return: """ from lemur.plugins import plugins v = plugins.get('verisign-issuer') units = v.get_available_units() metrics = {} for item in units: if item['@type'] in metrics.keys(): metrics[item['@type']] += int(item['@remaining']) else: metrics.update({item['@type']: int(item['@remaining'])}) for name, value in metrics.items(): metric = [ { "timestamp": 1321351651, "type": "GAUGE", "name": "Symantec {0} Unit Count".format(name), "tags": {}, "value": value } ] requests.post('http://localhost:8078/metrics', data=json.dumps(metric)) def main(): manager.add_command("start", LemurServer()) manager.add_command("runserver", Server(host='127.0.0.1', threaded=True)) manager.add_command("clean", Clean()) manager.add_command("show_urls", ShowUrls()) manager.add_command("db", MigrateCommand) manager.add_command("init", InitializeApp()) manager.add_command("create_user", CreateUser()) manager.add_command("reset_password", ResetPassword()) manager.add_command("create_role", CreateRole()) manager.add_command("source", source_manager) manager.add_command("certificate", certificate_manager) manager.add_command("notify", notification_manager) manager.add_command("endpoint", endpoint_manager) manager.add_command("report", report_manager) manager.add_command("policy", policy_manager) manager.add_command("pending_certs", pending_certificate_manager) manager.add_command("dns_providers", dns_provider_manager) manager.run() if __name__ == "__main__": main()