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# -- coding: utf-8 -- # CL LICENSE CHECK python lib # # Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved # # Licensed under CLOUD LINUX LICENSE AGREEMENT # http://cloudlinux.com/docs/LICENSE.TXT # CLASSES: # # LicenseData - main class for CL licence check # : check_license # : get_ip # : date_format # : open_letter_template # : format_letter # # FUNCTIONS: # # License update cron : update_license_timestamp_file # License update new key : update license with new key # Check license : check_license # Return Last License check date : last_license_check # Return Template to display : return_template_to_display import datetime import os import socket import struct import subprocess import sys import time from urllib import error, request import cldetectlib as detect from clcommon.utils import mod_makedirs RHN_CHECK_FILE = '/usr/sbin/rhn_check' RHN_UPDATE_NEW_KEY = '/usr/sbin/rhnreg_ks' LICENSE_TIMESTAMP_FILE = '/var/lve/lveinfo.ver' LICENSE_TIMESTAMP_DIR = os.path.dirname(LICENSE_TIMESTAMP_FILE) RHN_DIRECTORY = '/etc/sysconfig/rhn' RHN_SYSTEMID = os.path.join(RHN_DIRECTORY, 'systemid') JWT_TOKEN = os.path.join(RHN_DIRECTORY, 'jwt.token') JWT_TOKEN_TIMESTAMP_FILE = os.path.join(LICENSE_TIMESTAMP_DIR, 'jwt_last_update_ts') CACHE_TIME = 259200 # 3 days JWT_UPDATE_INTERVAL = 3600 * 4 NO_VALID_LICENSE_FOUND_TEMPLATE = '/usr/share/cloudlinux/no_valid_license_screen.txt' LICENSE_OUT_OF_DATE_EMAIL_TEMPLATE = '/usr/share/cloudlinux/license_out_of_date_email.txt' TEMPLATES = { 'Email': { 'template_file': LICENSE_OUT_OF_DATE_EMAIL_TEMPLATE, 'error_msg': 'Error: License out of date, email template missing.', }, 'NoValid': { 'template_file': NO_VALID_LICENSE_FOUND_TEMPLATE, 'error_msg': 'Error: No valid license found, template is missing.', }, } SHOW_IP_LINK = 'http://cloudlinux.com/showip.php' # License Data Class class LicenseData: _license_last_timestamp = '' _server_ip = '' _letter_template = '' @staticmethod def _is_license_needs_update(license_timestamp_file): """ Update license when: in case JWT token present: - if no timestamp file with jwt token last update time - if jwt token was not updated during last 4 hours - if jwt token was updated later than our timestamp in file in case JWT token is not present, but systemid exists (fallback for licensing w/o token) - update license only if systemid was changed after last timestamp update when no jwt and no systemid - re-update license """ if os.path.exists(JWT_TOKEN): if not os.path.exists(JWT_TOKEN_TIMESTAMP_FILE): return True rhn_updated = int(os.path.getmtime(JWT_TOKEN)) if rhn_updated < int(time.time()) - JWT_UPDATE_INTERVAL: return True jwt_last_update_timestamp = read_time_from_file(JWT_TOKEN_TIMESTAMP_FILE) if jwt_last_update_timestamp < rhn_updated: return True return False if os.path.exists(RHN_SYSTEMID): rhn_updated = os.path.getmtime(RHN_SYSTEMID) return rhn_updated > os.path.getmtime(license_timestamp_file) return True def check_license(self, license_timestamp_file): """ Checks license: 1. Reads cache file with timestamp 2. Ensures license must be re-checked: - if timestamp in cache file > CACHE_TIME -> check if we need to re-update licensing """ try: # Get timestamp of last license check self._license_last_timestamp = read_time_from_file(license_timestamp_file) if (int(time.time()) - self._license_last_timestamp) > CACHE_TIME: if self._is_license_needs_update(license_timestamp_file): return update_license_timestamp_file() # because if server does not have jwt token and license is not needed update # consider no license return os.path.exists(JWT_TOKEN) return True except (IOError, struct.error): return False # Get IP def get_ip(self): if not self._server_ip: try: with request.urlopen(SHOW_IP_LINK) as response: self._server_ip = response.read().decode('utf-8').strip() except error.URLError as e: print('Error: Get server IP. ' + str(e)) sys.exit(1) # Format Date def date_format(self, format): return datetime.datetime.fromtimestamp(self._license_last_timestamp).strftime(format) # Open letter template def open_letter_template(self, template): try: with open(template, 'r', encoding='utf-8') as f: self._letter_template = f.read() except IOError as e: print('Error: Failed to open template file. ' + str(e)) sys.exit(1) # Format Screen def format_letter(self): admin_email = detect.getCPAdminEmail() if not admin_email: return None self.get_ip() if not self._license_last_timestamp: return ( self._letter_template.replace('%LIC_DATE%', '') .replace('%IP%', self._server_ip) .replace('%HOSTNAME%', socket.gethostname()) .replace('%FROM%', admin_email) ) return ( self._letter_template.replace('%LIC_DATE%', ' since ' + self.date_format('%b %d, %y')) .replace('%IP%', self._server_ip) .replace('%HOSTNAME%', socket.gethostname()) .replace('%FROM%', admin_email) ) # License Data Class Object License = LicenseData() def read_time_from_file(file: str): with open(file, 'rb') as f: return struct.unpack('i', f.read())[0] def write_time_to_file(file: str, timestamp: int): with open(file, 'wb') as f: f.write(struct.pack('i', timestamp)) # License update cron def update_license_timestamp_file(): try: if not os.path.isdir(LICENSE_TIMESTAMP_DIR): mod_makedirs(LICENSE_TIMESTAMP_DIR, 0o755) with subprocess.Popen( [RHN_CHECK_FILE], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, ) as proc: proc.communicate() if proc.returncode == 0: write_time_to_file(LICENSE_TIMESTAMP_FILE, int(time.time())) if os.path.exists(JWT_TOKEN): write_time_to_file(JWT_TOKEN_TIMESTAMP_FILE, int(os.path.getmtime(JWT_TOKEN))) return True return False except (OSError, IOError): return False # update license with new key def update_license_with_key(key): try: if not os.path.isdir(LICENSE_TIMESTAMP_DIR): mod_makedirs(LICENSE_TIMESTAMP_DIR, 0o755) with subprocess.Popen( [RHN_UPDATE_NEW_KEY, '--activationkey=' + key, '--force'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, ) as proc: out, _ = proc.communicate() if proc.returncode == 0: write_time_to_file(LICENSE_TIMESTAMP_FILE, int(time.time())) if os.path.exists(JWT_TOKEN): write_time_to_file(JWT_TOKEN_TIMESTAMP_FILE, int(os.path.getmtime(JWT_TOKEN))) print('OK') return True print(out.strip()) return False except (OSError, IOError): print('Error: New key activation failed, please try again later.') return False # Returns: # True == license is Ok # False == license expired or not found def check_license(): # Check for license timestamp file in /var/lve/lveinfo.ver if os.path.isfile(LICENSE_TIMESTAMP_FILE): return License.check_license(LICENSE_TIMESTAMP_FILE) # try to re-update license file if jwt token is present # or systemid file as fallback when jwt absent (goDaddy) if os.path.exists(JWT_TOKEN) or os.path.exists(RHN_SYSTEMID): return update_license_timestamp_file() return False # Return Last license check Date def last_license_check(is_valid): if is_valid: return 'OK' # Check for license timestamp file in /var/lve/lveinfo.ver if os.path.isfile(LICENSE_TIMESTAMP_FILE): return 'No valid license found, last successful check was on ' + License.date_format('%b %d, %y') return 'No valid license found.' def get_email_template(): return get_template_to_display(TEMPLATES['Email']) def get_novalid_template(): return get_template_to_display(TEMPLATES['NoValid']) # Return Template Email, No Valid license found template. def get_template_to_display(template): # check for template in /usr/share/cloudlinux if not os.path.isfile(template['template_file']): return template['error_msg'] if not check_license(): # set template text into License class attr. License.open_letter_template(template['template_file']) # Return Formatted Template return License.format_letter() return None