def add_vtpm(inputfile): # read in the file with open(inputfile, encoding="utf-8") as f: group = yaml.load(f, Loader=SafeLoader) # fetch configuration parameters provider_reg_port = config.get('registrar', 'provider_registrar_port') provider_reg_ip = config.get('registrar', 'provider_registrar_ip') # request a vtpm uuid from the manager vtpm_uuid = vtpm_manager.add_vtpm_to_group(group['uuid']) # registrar it and get back a blob keyblob = registrar_client.doRegisterAgent(provider_reg_ip, provider_reg_port, vtpm_uuid, group['pubekpem'], group['ekcert'], group['aikpem']) # get the ephemeral registrar key by activating in the hardware tpm key = base64.b64encode(vtpm_manager.activate_group(group['uuid'], keyblob)) # tell the registrar server we know the key registrar_client.doActivateAgent(provider_reg_ip, provider_reg_port, vtpm_uuid, key) logger.info("Registered new vTPM with UUID: %s", vtpm_uuid) return vtpm_uuid
def main(argv=sys.argv): if len(argv) < 3: print("usage: provider_platform_init.py pubek.pem tpm_ekcert.der") print("\tassociates a hypervisor host to its TPM and registers it") print() print( "\tYou must obtain the public EK and the EK certificate from outside of Xen" ) print( "\ttake ownership first, then obtain pubek, and ekcert as follows") print("\t takeown -pwdo <owner_password>") print("\t getpubek -pwdo <owner-password>") print( "\t nv_readvalue -pwdo <owner-password> -in 1000f000 -cert -of tpm_ekcert.der" ) sys.exit(-1) f = open(argv[1], 'r') ek = f.read() f.close() f = open(argv[2], 'r') ekcert = base64.b64encode(f.read()) f.close() # fetch configuration parameters provider_reg_port = config.get('registrar', 'provider_registrar_port') provider_reg_ip = config.get('registrar', 'provider_registrar_ip') # create a new group (group_uuid, group_aik, group_num, _) = vtpm_manager.add_vtpm_group() # registrar it and get back a blob keyblob = registrar_client.doRegisterAgent(provider_reg_ip, provider_reg_port, group_uuid, ek, ekcert, group_aik) # get the ephemeral registrar key by activating in the hardware tpm key = base64.b64encode(vtpm_manager.activate_group(group_uuid, keyblob)) # create a new group (group_uuid, group_aik, group_num, _) = vtpm_manager.add_vtpm_group() # tell the registrar server we know the key registrar_client.doActivateAgent(provider_reg_ip, provider_reg_port, group_uuid, key) output = { 'uuid': group_uuid, 'aikpem': group_aik, 'pubekpem': ek, 'ekcert': ekcert, } # store the key and the group UUID in a file to add to vtpms later with open("group-%d-%s.tpm" % (group_num, group_uuid), 'w') as f: yaml.dump(output, f, Dumper=SafeDumper) logger.info("Activated VTPM group %d, UUID %s" % (group_num, group_uuid)) if group_num == 0: logger.info( "WARNING: Group 0 created, repeating activation again to create Group 1" ) main(argv) else: # create a symlink to the most recently create group symlink_force("group-%d-%s.tpm" % (group_num, group_uuid), "current_group.tpm")
def main(argv=sys.argv): if os.getuid() != 0 and common.REQUIRE_ROOT: logger.critical("This process must be run as root.") return # get params for initialization registrar_ip = config.get('general', 'registrar_ip') registrar_port = config.get('general', 'registrar_port') # initialize the tmpfs partition to store keys if it isn't already available secdir = secure_mount.mount() # change dir to working dir common.ch_dir(common.WORK_DIR, logger) #initialize tpm (ek, ekcert, aik, ek_tpm, aik_name) = tpm.tpm_init( self_activate=False, config_pw=config.get('cloud_agent', 'tpm_ownerpassword') ) # this tells initialize not to self activate the AIK virtual_agent = tpm.is_vtpm() # try to get some TPM randomness into the system entropy pool tpm.init_system_rand() if ekcert is None: if virtual_agent: ekcert = 'virtual' elif tpm.is_emulator(): ekcert = 'emulator' # now we need the UUID try: agent_uuid = config.get('cloud_agent', 'agent_uuid') except configparser.NoOptionError: agent_uuid = None if agent_uuid == 'openstack': agent_uuid = openstack.get_openstack_uuid() elif agent_uuid == 'hash_ek': agent_uuid = hashlib.sha256(ek).hexdigest() elif agent_uuid == 'generate' or agent_uuid is None: agent_uuid = str(uuid.uuid4()) if common.DEVELOP_IN_ECLIPSE: agent_uuid = "C432FBB3-D2F1-4A97-9EF7-75BD81C866E9" if common.STUB_VTPM and common.TPM_CANNED_VALUES is not None: # Use canned values for stubbing jsonIn = common.TPM_CANNED_VALUES if "add_vtpm_to_group" in jsonIn: # The value we're looking for has been canned! agent_uuid = jsonIn['add_vtpm_to_group']['retout'] else: # Our command hasn't been canned! raise Exception("Command %s not found in canned json!" % ("add_vtpm_to_group")) logger.info("Agent UUID: %s" % agent_uuid) # register it and get back a blob keyblob = registrar_client.doRegisterAgent(registrar_ip, registrar_port, agent_uuid, tpm_version, ek, ekcert, aik, ek_tpm, aik_name) if keyblob is None: raise Exception("Registration failed") # get the ephemeral registrar key key = tpm.activate_identity(keyblob) if key is None: raise Exception("Activation failed") # tell the registrar server we know the key retval = False if virtual_agent: deepquote = tpm.create_deep_quote( hashlib.sha1(key).hexdigest(), agent_uuid + aik + ek) retval = registrar_client.doActivateVirtualAgent( registrar_ip, registrar_port, agent_uuid, deepquote) else: retval = registrar_client.doActivateAgent(registrar_ip, registrar_port, agent_uuid, key) if not retval: raise Exception("Registration failed on activate") serveraddr = ('', config.getint('general', 'cloudagent_port')) server = CloudAgentHTTPServer(serveraddr, Handler, agent_uuid) serverthread = threading.Thread(target=server.serve_forever) logger.info('Starting Cloud Agent on port %s use <Ctrl-C> to stop' % serveraddr[1]) serverthread.start() # want to listen for revocations? if config.getboolean('cloud_agent', 'listen_notfications'): cert_path = config.get('cloud_agent', 'revocation_cert') if cert_path == "default": cert_path = '%s/unzipped/RevocationNotifier-cert.crt' % (secdir) elif cert_path[0] != '/': # if it is a relative, convert to absolute in work_dir cert_path = os.path.abspath('%s/%s' % (common.WORK_DIR, cert_path)) def perform_actions(revocation): actionlist = [] # load the actions from inside the keylime module actionlisttxt = config.get('cloud_agent', 'revocation_actions') if actionlisttxt.strip() != "": actionlist = actionlisttxt.split(',') actionlist = ["revocation_actions.%s" % i for i in actionlist] # load actions from unzipped if os.path.exists("%s/unzipped/action_list" % secdir): with open("%s/unzipped/action_list" % secdir, 'r') as f: actionlisttxt = f.read() if actionlisttxt.strip() != "": localactions = actionlisttxt.strip().split(',') for action in localactions: if not action.startswith('local_action_'): logger.warning( "invalid local action: %s. must start with local_action_" % action) else: actionlist.append(action) uzpath = "%s/unzipped" % secdir if uzpath not in sys.path: sys.path.append(uzpath) for action in actionlist: logger.debug("executing revocation action %s" % action) try: module = importlib.import_module(action) execute = getattr(module, 'execute') asyncio.get_event_loop().run_until_complete( execute(revocation)) except Exception as e: logger.warn( "Exception during execution of revocation action %s: %s" % (action, e)) try: while True: try: revocation_notifier.await_notifications( perform_actions, revocation_cert_path=cert_path) except Exception as e: logger.exception(e) logger.warn( "No connection to revocation server, retrying in 10s..." ) time.sleep(10) except KeyboardInterrupt: logger.info("TERM Signal received, shutting down...") tpm.flush_keys() server.shutdown() else: try: while True: time.sleep(1) except KeyboardInterrupt: logger.info("TERM Signal received, shutting down...") tpm.flush_keys() server.shutdown()
def main(): for ML in [config.MEASUREDBOOT_ML, config.IMA_ML]: if not os.access(ML, os.F_OK): logger.warning( 'Measurement list path %s not accessible by agent. Any attempt to instruct it to access this path - via "keylime_tenant" CLI - will result in agent process dying', ML, ) ima_log_file = None if os.path.exists(config.IMA_ML): ima_log_file = open(config.IMA_ML, "r", encoding="utf-8") # pylint: disable=consider-using-with tpm_log_file_data = None if os.path.exists(config.MEASUREDBOOT_ML): with open(config.MEASUREDBOOT_ML, "rb") as tpm_log_file: tpm_log_file_data = base64.b64encode(tpm_log_file.read()) if config.get("cloud_agent", "agent_uuid") == "dmidecode": if os.getuid() != 0: raise RuntimeError( "agent_uuid is configured to use dmidecode, but current process is not running as root." ) cmd = ["which", "dmidecode"] ret = cmd_exec.run(cmd, raiseOnError=False) if ret["code"] != 0: raise RuntimeError( "agent_uuid is configured to use dmidecode, but it's is not found on the system." ) # initialize the tmpfs partition to store keys if it isn't already available secdir = secure_mount.mount() # Now that operations requiring root privileges are done, drop privileges # if 'run_as' is available in the configuration. if os.getuid() == 0: run_as = config.get("cloud_agent", "run_as", fallback="") if run_as != "": user_utils.chown(secdir, run_as) user_utils.change_uidgid(run_as) logger.info("Dropped privileges to %s", run_as) else: logger.warning( "Cannot drop privileges since 'run_as' is empty or missing in keylime.conf agent section." ) # Instanitate TPM class instance_tpm = tpm() # get params for initialization registrar_ip = config.get("cloud_agent", "registrar_ip") registrar_port = config.get("cloud_agent", "registrar_port") # get params for the verifier to contact the agent contact_ip = os.getenv("KEYLIME_AGENT_CONTACT_IP", None) if contact_ip is None and config.has_option("cloud_agent", "agent_contact_ip"): contact_ip = config.get("cloud_agent", "agent_contact_ip") contact_port = os.getenv("KEYLIME_AGENT_CONTACT_PORT", None) if contact_port is None and config.has_option("cloud_agent", "agent_contact_port"): contact_port = config.get("cloud_agent", "agent_contact_port", fallback="invalid") # change dir to working dir fs_util.ch_dir(config.WORK_DIR) # set a conservative general umask os.umask(0o077) # initialize tpm (ekcert, ek_tpm, aik_tpm) = instance_tpm.tpm_init( self_activate=False, config_pw=config.get("cloud_agent", "tpm_ownerpassword") ) # this tells initialize not to self activate the AIK # Warn if kernel version is <5.10 and another algorithm than SHA1 is used, # because otherwise IMA will not work kernel_version = tuple(platform.release().split("-")[0].split(".")) if tuple(map(int, kernel_version)) < ( 5, 10, 0) and instance_tpm.defaults["hash"] != algorithms.Hash.SHA1: logger.warning( "IMA attestation only works on kernel versions <5.10 with SHA1 as hash algorithm. " 'Even if ascii_runtime_measurements shows "%s" as the ' "algorithm, it might be just padding zeros", (instance_tpm.defaults["hash"]), ) if ekcert is None and instance_tpm.is_emulator(): ekcert = "emulator" # now we need the UUID try: agent_uuid = config.get("cloud_agent", "agent_uuid") except configparser.NoOptionError: agent_uuid = None if agent_uuid == "hash_ek": ek_pubkey = pubkey_from_tpm2b_public(base64.b64decode(ek_tpm)) ek_pubkey_pem = ek_pubkey.public_bytes( encoding=serialization.Encoding.PEM, format=serialization.PublicFormat.SubjectPublicKeyInfo) agent_uuid = hashlib.sha256(ek_pubkey_pem).hexdigest() elif agent_uuid == "generate" or agent_uuid is None: agent_uuid = str(uuid.uuid4()) elif agent_uuid == "dmidecode": cmd = ["dmidecode", "-s", "system-uuid"] ret = cmd_exec.run(cmd) sys_uuid = ret["retout"][0].decode("utf-8") agent_uuid = sys_uuid.strip() try: uuid.UUID(agent_uuid) except ValueError as e: raise RuntimeError( # pylint: disable=raise-missing-from f"The UUID returned from dmidecode is invalid: {str(e)}") elif agent_uuid == "hostname": agent_uuid = socket.getfqdn() elif agent_uuid == "environment": agent_uuid = os.getenv("KEYLIME_AGENT_UUID", None) if agent_uuid is None: raise RuntimeError( "Env variable KEYLIME_AGENT_UUID is empty, but agent_uuid is set to 'environment'" ) elif not validators.valid_uuid(agent_uuid): raise RuntimeError("The UUID is not valid") if not validators.valid_agent_id(agent_uuid): raise RuntimeError( "The agent ID set via agent uuid parameter use invalid characters") logger.info("Agent UUID: %s", agent_uuid) serveraddr = (config.get("cloud_agent", "cloudagent_ip"), config.getint("cloud_agent", "cloudagent_port")) keylime_ca = config.get("cloud_agent", "keylime_ca") if keylime_ca == "default": keylime_ca = os.path.join(config.WORK_DIR, "cv_ca", "cacert.crt") server = CloudAgentHTTPServer(serveraddr, Handler, agent_uuid, contact_ip, ima_log_file, tpm_log_file_data) if server.mtls_cert_enabled: context = web_util.generate_mtls_context(server.mtls_cert_path, server.rsakey_path, keylime_ca, logger=logger) server.socket = context.wrap_socket(server.socket, server_side=True) else: if (not config.getboolean( "cloud_agent", "enable_insecure_payload", fallback=False) and config.get("cloud_agent", "payload_script") != ""): raise RuntimeError( "agent mTLS is disabled, while a tenant can instruct the agent to execute code on the node. " 'In order to allow the running of the agent, "enable_insecure_payload" has to be set to "True"' ) serverthread = threading.Thread(target=server.serve_forever, daemon=True) # register it and get back a blob mtls_cert = "disabled" if server.mtls_cert: mtls_cert = server.mtls_cert.public_bytes(serialization.Encoding.PEM) keyblob = registrar_client.doRegisterAgent(registrar_ip, registrar_port, agent_uuid, ek_tpm, ekcert, aik_tpm, mtls_cert, contact_ip, contact_port) if keyblob is None: instance_tpm.flush_keys() raise Exception("Registration failed") # get the ephemeral registrar key key = instance_tpm.activate_identity(keyblob) if key is None: instance_tpm.flush_keys() raise Exception("Activation failed") # tell the registrar server we know the key retval = registrar_client.doActivateAgent(registrar_ip, registrar_port, agent_uuid, key) if not retval: instance_tpm.flush_keys() raise Exception("Registration failed on activate") # Start revocation listener in a new process to not interfere with tornado revocation_process = multiprocessing.Process(target=revocation_listener, daemon=True) revocation_process.start() logger.info( "Starting Cloud Agent on %s:%s with API version %s. Use <Ctrl-C> to stop", serveraddr[0], serveraddr[1], keylime_api_version.current_version(), ) serverthread.start() def shutdown_handler(*_): logger.info("TERM Signal received, shutting down...") logger.debug("Stopping revocation notifier...") revocation_process.terminate() logger.debug("Shutting down HTTP server...") server.shutdown() server.server_close() serverthread.join() logger.debug("HTTP server stopped...") revocation_process.join() logger.debug("Revocation notifier stopped...") secure_mount.umount() logger.debug("Umounting directories...") instance_tpm.flush_keys() logger.debug("Flushed keys successfully") sys.exit(0) signal.signal(signal.SIGTERM, shutdown_handler) signal.signal(signal.SIGQUIT, shutdown_handler) signal.signal(signal.SIGINT, shutdown_handler) # Keep the main thread alive by waiting for the server thread serverthread.join()
def main(): for ML in [config.MEASUREDBOOT_ML, config.IMA_ML]: if not os.access(ML, os.F_OK): logger.warning( "Measurement list path %s not accessible by agent. Any attempt to instruct it to access this path - via \"keylime_tenant\" CLI - will result in agent process dying", ML) ima_log_file = None if os.path.exists(config.IMA_ML): ima_log_file = open(config.IMA_ML, 'r', encoding="utf-8") tpm_log_file_data = None if os.path.exists(config.MEASUREDBOOT_ML): with open(config.MEASUREDBOOT_ML, 'rb') as tpm_log_file: tpm_log_file_data = base64.b64encode(tpm_log_file.read()) if config.get('cloud_agent', 'agent_uuid') == 'dmidecode': if os.getuid() != 0: raise RuntimeError('agent_uuid is configured to use dmidecode, ' 'but current process is not running as root.') cmd = ['which', 'dmidecode'] ret = cmd_exec.run(cmd, raiseOnError=False) if ret['code'] != 0: raise RuntimeError('agent_uuid is configured to use dmidecode, ' 'but it\'s is not found on the system.') # initialize the tmpfs partition to store keys if it isn't already available secdir = secure_mount.mount() # Now that operations requiring root privileges are done, drop privileges # if 'run_as' is available in the configuration. if os.getuid() == 0: run_as = config.get('cloud_agent', 'run_as', fallback='') if run_as != '': user_utils.chown(secdir, run_as) user_utils.change_uidgid(run_as) logger.info(f"Dropped privileges to {run_as}") else: logger.warning( "Cannot drop privileges since 'run_as' is empty or missing in keylime.conf agent section." ) # Instanitate TPM class instance_tpm = tpm() # get params for initialization registrar_ip = config.get('cloud_agent', 'registrar_ip') registrar_port = config.get('cloud_agent', 'registrar_port') # get params for the verifier to contact the agent contact_ip = os.getenv("KEYLIME_AGENT_CONTACT_IP", None) if contact_ip is None and config.has_option('cloud_agent', 'agent_contact_ip'): contact_ip = config.get('cloud_agent', 'agent_contact_ip') contact_port = os.getenv("KEYLIME_AGENT_CONTACT_PORT", None) if contact_port is None and config.has_option('cloud_agent', 'agent_contact_port'): contact_port = config.get('cloud_agent', 'agent_contact_port', fallback="invalid") # change dir to working dir fs_util.ch_dir(config.WORK_DIR) # set a conservative general umask os.umask(0o077) # initialize tpm (ekcert, ek_tpm, aik_tpm) = instance_tpm.tpm_init( self_activate=False, config_pw=config.get('cloud_agent', 'tpm_ownerpassword') ) # this tells initialize not to self activate the AIK virtual_agent = instance_tpm.is_vtpm() # Warn if kernel version is <5.10 and another algorithm than SHA1 is used, # because otherwise IMA will not work kernel_version = tuple(platform.release().split("-")[0].split(".")) if tuple(map(int, kernel_version)) < ( 5, 10, 0) and instance_tpm.defaults["hash"] != algorithms.Hash.SHA1: logger.warning( "IMA attestation only works on kernel versions <5.10 with SHA1 as hash algorithm. " "Even if ascii_runtime_measurements shows \"%s\" as the " "algorithm, it might be just padding zeros", (instance_tpm.defaults["hash"])) if ekcert is None: if virtual_agent: ekcert = 'virtual' elif instance_tpm.is_emulator(): ekcert = 'emulator' # now we need the UUID try: agent_uuid = config.get('cloud_agent', 'agent_uuid') except configparser.NoOptionError: agent_uuid = None if agent_uuid == 'hash_ek': ek_pubkey = pubkey_from_tpm2b_public(base64.b64decode(ek_tpm)) ek_pubkey_pem = ek_pubkey.public_bytes( encoding=serialization.Encoding.PEM, format=serialization.PublicFormat.SubjectPublicKeyInfo) agent_uuid = hashlib.sha256(ek_pubkey_pem).hexdigest() elif agent_uuid == 'generate' or agent_uuid is None: agent_uuid = str(uuid.uuid4()) elif agent_uuid == 'dmidecode': cmd = ['dmidecode', '-s', 'system-uuid'] ret = cmd_exec.run(cmd) sys_uuid = ret['retout'][0].decode('utf-8') agent_uuid = sys_uuid.strip() try: uuid.UUID(agent_uuid) except ValueError as e: raise RuntimeError( "The UUID returned from dmidecode is invalid: %s" % e) # pylint: disable=raise-missing-from elif agent_uuid == 'hostname': agent_uuid = socket.getfqdn() elif agent_uuid == 'environment': agent_uuid = os.getenv("KEYLIME_AGENT_UUID", None) if agent_uuid is None: raise RuntimeError( "Env variable KEYLIME_AGENT_UUID is empty, but agent_uuid is set to 'environment'" ) elif not validators.valid_uuid(agent_uuid): raise RuntimeError("The UUID is not valid") if not validators.valid_agent_id(agent_uuid): raise RuntimeError( "The agent ID set via agent uuid parameter use invalid characters") if config.STUB_VTPM and config.TPM_CANNED_VALUES is not None: # Use canned values for stubbing jsonIn = config.TPM_CANNED_VALUES if "add_vtpm_to_group" in jsonIn: # The value we're looking for has been canned! agent_uuid = jsonIn['add_vtpm_to_group']['retout'] else: # Our command hasn't been canned! raise Exception("Command %s not found in canned json!" % ("add_vtpm_to_group")) logger.info("Agent UUID: %s", agent_uuid) serveraddr = (config.get('cloud_agent', 'cloudagent_ip'), config.getint('cloud_agent', 'cloudagent_port')) keylime_ca = config.get('cloud_agent', 'keylime_ca') if keylime_ca == "default": keylime_ca = os.path.join(config.WORK_DIR, 'cv_ca', 'cacert.crt') server = CloudAgentHTTPServer(serveraddr, Handler, agent_uuid, contact_ip, ima_log_file, tpm_log_file_data) context = web_util.generate_mtls_context(server.mtls_cert_path, server.rsakey_path, keylime_ca, logger=logger) server.socket = context.wrap_socket(server.socket, server_side=True) serverthread = threading.Thread(target=server.serve_forever, daemon=True) # register it and get back a blob mtls_cert = server.mtls_cert.public_bytes(serialization.Encoding.PEM) keyblob = registrar_client.doRegisterAgent(registrar_ip, registrar_port, agent_uuid, ek_tpm, ekcert, aik_tpm, mtls_cert, contact_ip, contact_port) if keyblob is None: instance_tpm.flush_keys() raise Exception("Registration failed") # get the ephemeral registrar key key = instance_tpm.activate_identity(keyblob) if key is None: instance_tpm.flush_keys() raise Exception("Activation failed") # tell the registrar server we know the key retval = registrar_client.doActivateAgent(registrar_ip, registrar_port, agent_uuid, key) if not retval: instance_tpm.flush_keys() raise Exception("Registration failed on activate") # Start revocation listener in a new process to not interfere with tornado revocation_process = multiprocessing.Process(target=revocation_listener, daemon=True) revocation_process.start() logger.info( "Starting Cloud Agent on %s:%s with API version %s. Use <Ctrl-C> to stop", serveraddr[0], serveraddr[1], keylime_api_version.current_version()) serverthread.start() def shutdown_handler(*_): logger.info("TERM Signal received, shutting down...") logger.debug("Stopping revocation notifier...") revocation_process.terminate() logger.debug("Shutting down HTTP server...") server.shutdown() server.server_close() serverthread.join() logger.debug("HTTP server stopped...") revocation_process.join() logger.debug("Revocation notifier stopped...") secure_mount.umount() logger.debug("Umounting directories...") instance_tpm.flush_keys() logger.debug("Flushed keys successfully") sys.exit(0) signal.signal(signal.SIGTERM, shutdown_handler) signal.signal(signal.SIGQUIT, shutdown_handler) signal.signal(signal.SIGINT, shutdown_handler) # Keep the main thread alive by waiting for the server thread serverthread.join()
def main(): for ML in [config.MEASUREDBOOT_ML, config.IMA_ML]: if not os.access(ML, os.F_OK): logger.warning( "Measurement list path %s not accessible by agent. Any attempt to instruct it to access this path - via \"keylime_tenant\" CLI - will result in agent process dying", ML) if config.get('cloud_agent', 'agent_uuid') == 'dmidecode': if os.getuid() != 0: raise RuntimeError('agent_uuid is configured to use dmidecode, ' 'but current process is not running as root.') cmd = ['which', 'dmidecode'] ret = cmd_exec.run(cmd, raiseOnError=False) if ret['code'] != 0: raise RuntimeError('agent_uuid is configured to use dmidecode, ' 'but it\'s is not found on the system.') # Instanitate TPM class instance_tpm = tpm() # get params for initialization registrar_ip = config.get('cloud_agent', 'registrar_ip') registrar_port = config.get('cloud_agent', 'registrar_port') # initialize the tmpfs partition to store keys if it isn't already available secdir = secure_mount.mount() # change dir to working dir config.ch_dir(config.WORK_DIR, logger) # initialize tpm (ekcert, ek_tpm, aik_tpm) = instance_tpm.tpm_init( self_activate=False, config_pw=config.get('cloud_agent', 'tpm_ownerpassword') ) # this tells initialize not to self activate the AIK virtual_agent = instance_tpm.is_vtpm() # try to get some TPM randomness into the system entropy pool instance_tpm.init_system_rand() if ekcert is None: if virtual_agent: ekcert = 'virtual' elif instance_tpm.is_emulator(): ekcert = 'emulator' # now we need the UUID try: agent_uuid = config.get('cloud_agent', 'agent_uuid') except configparser.NoOptionError: agent_uuid = None if agent_uuid == 'openstack': agent_uuid = openstack.get_openstack_uuid() elif agent_uuid == 'hash_ek': agent_uuid = hashlib.sha256(ek_tpm).hexdigest() elif agent_uuid == 'generate' or agent_uuid is None: agent_uuid = str(uuid.uuid4()) elif agent_uuid == 'dmidecode': cmd = ['dmidecode', '-s', 'system-uuid'] ret = cmd_exec.run(cmd) sys_uuid = ret['retout'].decode('utf-8') agent_uuid = sys_uuid.strip() elif agent_uuid == 'hostname': agent_uuid = socket.getfqdn() if config.STUB_VTPM and config.TPM_CANNED_VALUES is not None: # Use canned values for stubbing jsonIn = config.TPM_CANNED_VALUES if "add_vtpm_to_group" in jsonIn: # The value we're looking for has been canned! agent_uuid = jsonIn['add_vtpm_to_group']['retout'] else: # Our command hasn't been canned! raise Exception("Command %s not found in canned json!" % ("add_vtpm_to_group")) logger.info("Agent UUID: %s", agent_uuid) # register it and get back a blob keyblob = registrar_client.doRegisterAgent(registrar_ip, registrar_port, agent_uuid, ek_tpm, ekcert, aik_tpm) if keyblob is None: instance_tpm.flush_keys() raise Exception("Registration failed") # get the ephemeral registrar key key = instance_tpm.activate_identity(keyblob) if key is None: instance_tpm.flush_keys() raise Exception("Activation failed") # tell the registrar server we know the key retval = False retval = registrar_client.doActivateAgent(registrar_ip, registrar_port, agent_uuid, key) if not retval: instance_tpm.flush_keys() raise Exception("Registration failed on activate") serveraddr = (config.get('cloud_agent', 'cloudagent_ip'), config.getint('cloud_agent', 'cloudagent_port')) server = CloudAgentHTTPServer(serveraddr, Handler, agent_uuid) serverthread = threading.Thread(target=server.serve_forever) logger.info("Starting Cloud Agent on %s:%s use <Ctrl-C> to stop", serveraddr[0], serveraddr[1]) serverthread.start() # want to listen for revocations? if config.getboolean('cloud_agent', 'listen_notfications'): cert_path = config.get('cloud_agent', 'revocation_cert') if cert_path == "default": cert_path = '%s/unzipped/RevocationNotifier-cert.crt' % (secdir) elif cert_path[0] != '/': # if it is a relative, convert to absolute in work_dir cert_path = os.path.abspath('%s/%s' % (config.WORK_DIR, cert_path)) def perform_actions(revocation): actionlist = [] # load the actions from inside the keylime module actionlisttxt = config.get('cloud_agent', 'revocation_actions') if actionlisttxt.strip() != "": actionlist = actionlisttxt.split(',') actionlist = ["revocation_actions.%s" % i for i in actionlist] # load actions from unzipped if os.path.exists("%s/unzipped/action_list" % secdir): with open("%s/unzipped/action_list" % secdir, 'r') as f: actionlisttxt = f.read() if actionlisttxt.strip() != "": localactions = actionlisttxt.strip().split(',') for action in localactions: if not action.startswith('local_action_'): logger.warning( "Invalid local action: %s. Must start with local_action_", action) else: actionlist.append(action) uzpath = "%s/unzipped" % secdir if uzpath not in sys.path: sys.path.append(uzpath) for action in actionlist: logger.info("Executing revocation action %s", action) try: module = importlib.import_module(action) execute = getattr(module, 'execute') asyncio.get_event_loop().run_until_complete( execute(revocation)) except Exception as e: logger.warning( "Exception during execution of revocation action %s: %s", action, e) try: while True: try: revocation_notifier.await_notifications( perform_actions, revocation_cert_path=cert_path) except Exception as e: logger.exception(e) logger.warning( "No connection to revocation server, retrying in 10s..." ) time.sleep(10) except KeyboardInterrupt: logger.info("TERM Signal received, shutting down...") instance_tpm.flush_keys() server.shutdown() else: try: while True: time.sleep(1) except KeyboardInterrupt: logger.info("TERM Signal received, shutting down...") instance_tpm.flush_keys() server.shutdown()