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255 lines
7.3 KiB
255 lines
7.3 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# __version__ is a human-readable version number.
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# __version_info__ is a four-tuple for programmatic comparison. The first
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# three numbers are the components of the version number. The fourth
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# is zero for an official release, positive for a development branch,
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# or negative for a release candidate or beta (after the base version
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# number has been incremented)
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"""
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Startup script for a GNS3 Server Cloud Instance. It generates certificates,
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config files and usernames before finally starting the gns3server process
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on the instance.
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"""
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import os
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import sys
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import configparser
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import getopt
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import datetime
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import signal
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from logging.handlers import *
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from os.path import expanduser
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from gns3server.config import Config
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import ast
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import subprocess
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import uuid
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SCRIPT_NAME = os.path.basename(__file__)
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# This is the full path when used as an import
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SCRIPT_PATH = os.path.dirname(__file__)
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if not SCRIPT_PATH:
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SCRIPT_PATH = os.path.join(os.path.dirname(os.path.abspath(
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sys.argv[0])))
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LOG_NAME = "gns3-startup"
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log = None
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usage = """
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USAGE: %s
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Options:
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-d, --debug Enable debugging
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-i --ip The ip address of the server, for cert generation
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-v, --verbose Enable verbose logging
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-h, --help Display this menu :)
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--data Python dict of data to be written to the config file:
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" { 'gns3' : 'Is AWESOME' } "
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""" % (SCRIPT_NAME)
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def parse_cmd_line(argv):
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"""
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Parse command line arguments
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argv: Passed in sys.argv
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"""
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short_args = "dvh"
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long_args = ("debug",
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"ip=",
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"verbose",
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"help",
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"data=",
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)
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try:
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opts, extra_opts = getopt.getopt(argv[1:], short_args, long_args)
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except getopt.GetoptError as e:
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print("Unrecognized command line option or missing required argument: %s" %(e))
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print(usage)
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sys.exit(2)
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cmd_line_option_list = {'debug': False, 'verbose': True, 'data': None}
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if sys.platform == "linux":
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cmd_line_option_list['syslog'] = "/dev/log"
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elif sys.platform == "osx":
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cmd_line_option_list['syslog'] = "/var/run/syslog"
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else:
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cmd_line_option_list['syslog'] = ('localhost',514)
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for opt, val in opts:
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if opt in ("-h", "--help"):
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print(usage)
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sys.exit(0)
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elif opt in ("-d", "--debug"):
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cmd_line_option_list["debug"] = True
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elif opt in ("--ip",):
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cmd_line_option_list["ip"] = val
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elif opt in ("-v", "--verbose"):
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cmd_line_option_list["verbose"] = True
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elif opt in ("--data",):
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cmd_line_option_list["data"] = ast.literal_eval(val)
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return cmd_line_option_list
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def set_logging(cmd_options):
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"""
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Setup logging and format output for console and syslog
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Syslog is using the KERN facility
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"""
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log = logging.getLogger("%s" % (LOG_NAME))
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log_level = logging.INFO
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log_level_console = logging.WARNING
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if cmd_options['verbose'] is True:
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log_level_console = logging.INFO
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if cmd_options['debug'] is True:
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log_level_console = logging.DEBUG
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log_level = logging.DEBUG
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formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
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sys_formatter = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
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console_log = logging.StreamHandler()
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console_log.setLevel(log_level_console)
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console_log.setFormatter(formatter)
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syslog_handler = SysLogHandler(
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address=cmd_options['syslog'],
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facility=SysLogHandler.LOG_KERN
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)
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syslog_handler.setFormatter(sys_formatter)
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log.setLevel(log_level)
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log.addHandler(console_log)
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log.addHandler(syslog_handler)
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return log
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def _generate_certs(options):
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"""
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Generate a self-signed certificate for SSL-enabling the WebSocket
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connection. The certificate is sent back to the client so it can
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verify the authenticity of the server.
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:return: A 2-tuple of strings containing (server_key, server_cert)
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"""
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cmd = ["{}/cert_utils/create_cert.sh".format(SCRIPT_PATH), options['ip']]
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log.debug("Generating certs with cmd: {}".format(' '.join(cmd)))
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output_raw = subprocess.check_output(cmd, shell=False,
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stderr=subprocess.STDOUT)
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output_str = output_raw.decode("utf-8")
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output = output_str.strip().split("\n")
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log.debug(output)
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return (output[-2], output[-1])
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def _start_gns3server():
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"""
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Start up the gns3 server.
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:return: None
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"""
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cmd = 'gns3server --quiet > /tmp/gns3.log 2>&1 &'
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log.info("Starting gns3server with cmd {}".format(cmd))
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os.system(cmd)
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def main():
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global log
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options = parse_cmd_line(sys.argv)
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log = set_logging(options)
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def _shutdown(signalnum=None, frame=None):
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"""
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Handles the SIGINT and SIGTERM event, inside of main so it has access to
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the log vars.
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"""
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log.info("Received shutdown signal")
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sys.exit(0)
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# Setup signal to catch Control-C / SIGINT and SIGTERM
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signal.signal(signal.SIGINT, _shutdown)
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signal.signal(signal.SIGTERM, _shutdown)
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client_data = {}
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config = Config.instance()
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cfg = config.list_cloud_config_file()
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cfg_path = os.path.dirname(cfg)
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try:
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os.makedirs(cfg_path)
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except FileExistsError:
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pass
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(server_key, server_crt) = _generate_certs(options)
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cloud_config = configparser.ConfigParser()
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cloud_config['CLOUD_SERVER'] = {}
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if options['data']:
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cloud_config['CLOUD_SERVER'] = options['data']
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cloud_config['CLOUD_SERVER']['SSL_KEY'] = server_key
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cloud_config['CLOUD_SERVER']['SSL_CRT'] = server_crt
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cloud_config['CLOUD_SERVER']['SSL_ENABLED'] = 'no'
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cloud_config['CLOUD_SERVER']['WEB_USERNAME'] = str(uuid.uuid4()).upper()[0:8]
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cloud_config['CLOUD_SERVER']['WEB_PASSWORD'] = str(uuid.uuid4()).upper()[0:8]
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with open(cfg, 'w') as cloud_config_file:
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cloud_config.write(cloud_config_file)
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_start_gns3server()
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with open(server_crt, 'r') as cert_file:
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cert_data = cert_file.readlines()
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cert_file.close()
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# Return a stringified dictionary on stdout. The gui captures this to get
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# things like the server cert.
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client_data['SSL_CRT_FILE'] = server_crt
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client_data['SSL_CRT'] = cert_data
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client_data['WEB_USERNAME'] = cloud_config['CLOUD_SERVER']['WEB_USERNAME']
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client_data['WEB_PASSWORD'] = cloud_config['CLOUD_SERVER']['WEB_PASSWORD']
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print(client_data)
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return 0
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if __name__ == "__main__":
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result = main()
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sys.exit(result)
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