hbnet/config.py

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#!/usr/bin/env python
#
###############################################################################
# Copyright (C) 2016-2018 Cortney T. Buffington, N0MJS <n0mjs@me.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
###############################################################################
'''
This module generates the configuration data structure for hblink.py and
assoicated programs that use it. It has been seaparated into a different
module so as to keep hblink.py easeier to navigate. This file only needs
updated if the items in the main configuraiton file (usually hblink.cfg)
change.
'''
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# Added config option for APRS in the master config section
# Modified by KF7EEL - 10-15-2020
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import configparser
import sys
import const
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from socket import gethostbyname
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# Does anybody read this stuff? There's a PEP somewhere that says I should do this.
__author__ = 'Cortney T. Buffington, N0MJS'
__copyright__ = 'Copyright (c) 2016-2018 Cortney T. Buffington, N0MJS and the K0USY Group'
__credits__ = 'Colin Durbridge, G4EML, Steve Zingman, N4IRS; Mike Zingman, N4IRR; Jonathan Naylor, G4KLX; Hans Barthen, DL5DI; Torsten Shultze, DG1HT'
__license__ = 'GNU GPLv3'
__maintainer__ = 'Cort Buffington, N0MJS'
__email__ = 'n0mjs@me.com'
# Processing of ALS goes here. It's separated from the acl_build function because this
# code is hblink config-file format specific, and acl_build is abstracted
def process_acls(_config):
# Global registration ACL
_config['GLOBAL']['REG_ACL'] = acl_build(_config['GLOBAL']['REG_ACL'], const.PEER_MAX)
# Global subscriber and TGID ACLs
for acl in ['SUB_ACL', 'TG1_ACL', 'TG2_ACL']:
_config['GLOBAL'][acl] = acl_build(_config['GLOBAL'][acl], const.ID_MAX)
# System level ACLs
for system in _config['SYSTEMS']:
# Registration ACLs (which make no sense for peer systems)
if _config['SYSTEMS'][system]['MODE'] == 'MASTER':
_config['SYSTEMS'][system]['REG_ACL'] = acl_build(_config['SYSTEMS'][system]['REG_ACL'], const.PEER_MAX)
# Subscriber and TGID ACLs (valid for all system types)
for acl in ['SUB_ACL', 'TG1_ACL', 'TG2_ACL']:
_config['SYSTEMS'][system][acl] = acl_build(_config['SYSTEMS'][system][acl], const.ID_MAX)
# Create an access control list that is programatically useable from human readable:
# ORIGINAL: 'DENY:1-5,3120101,3120124'
# PROCESSED: (False, set([(1, 5), (3120124, 3120124), (3120101, 3120101)]))
def acl_build(_acl, _max):
if not _acl:
return(True, set((const.ID_MIN, _max)))
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acl = [] #set()
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sections = _acl.split(':')
if sections[0] == 'PERMIT':
action = True
else:
action = False
for entry in sections[1].split(','):
if entry == 'ALL':
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acl.append((const.ID_MIN, _max))
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break
elif '-' in entry:
start,end = entry.split('-')
start,end = int(start), int(end)
if (const.ID_MIN <= start <= _max) or (const.ID_MIN <= end <= _max):
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acl.append((start, end))
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else:
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sys.exit('ACL CREATION ERROR, VALUE OUT OF RANGE ({} - {})IN RANGE-BASED ENTRY: {}'.format(const.ID_MIN, _max, entry))
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else:
id = int(entry)
if (const.ID_MIN <= id <= _max):
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acl.append((id, id))
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else:
sys.exit('ACL CREATION ERROR, VALUE OUT OF RANGE ({} - {}) IN SINGLE ID ENTRY: {}'.format(const.ID_MIN, _max, entry))
return (action, acl)
def build_config(_config_file):
config = configparser.ConfigParser()
if not config.read(_config_file):
sys.exit('Configuration file \''+_config_file+'\' is not a valid configuration file! Exiting...')
CONFIG = {}
CONFIG['GLOBAL'] = {}
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CONFIG['APRS'] = {}
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CONFIG['REPORTS'] = {}
CONFIG['LOGGER'] = {}
CONFIG['ALIASES'] = {}
CONFIG['SYSTEMS'] = {}
try:
for section in config.sections():
if section == 'GLOBAL':
CONFIG['GLOBAL'].update({
'PATH': config.get(section, 'PATH'),
'PING_TIME': config.getint(section, 'PING_TIME'),
'MAX_MISSED': config.getint(section, 'MAX_MISSED'),
'USE_ACL': config.get(section, 'USE_ACL'),
'REG_ACL': config.get(section, 'REG_ACL'),
'SUB_ACL': config.get(section, 'SUB_ACL'),
'TG1_ACL': config.get(section, 'TGID_TS1_ACL'),
'TG2_ACL': config.get(section, 'TGID_TS2_ACL')
})
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elif section == 'APRS':
CONFIG['APRS'].update({
'ENABLED': config.getboolean(section, 'ENABLED'),
'CALLSIGN': config.get(section, 'CALLSIGN'),
'REPORT_INTERVAL': config.getint(section, 'REPORT_INTERVAL'),
'SERVER': config.get(section, 'SERVER'),
'MESSAGE': config.get(section, 'MESSAGE')
})
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elif section == 'REPORTS':
CONFIG['REPORTS'].update({
'REPORT': config.getboolean(section, 'REPORT'),
'REPORT_INTERVAL': config.getint(section, 'REPORT_INTERVAL'),
'REPORT_PORT': config.getint(section, 'REPORT_PORT'),
'REPORT_CLIENTS': config.get(section, 'REPORT_CLIENTS').split(',')
})
elif section == 'LOGGER':
CONFIG['LOGGER'].update({
'LOG_FILE': config.get(section, 'LOG_FILE'),
'LOG_HANDLERS': config.get(section, 'LOG_HANDLERS'),
'LOG_LEVEL': config.get(section, 'LOG_LEVEL'),
'LOG_NAME': config.get(section, 'LOG_NAME')
})
if not CONFIG['LOGGER']['LOG_FILE']:
CONFIG['LOGGER']['LOG_FILE'] = '/dev/null'
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elif section == 'ALIASES':
CONFIG['ALIASES'].update({
'TRY_DOWNLOAD': config.getboolean(section, 'TRY_DOWNLOAD'),
'PATH': config.get(section, 'PATH'),
'PEER_FILE': config.get(section, 'PEER_FILE'),
'SUBSCRIBER_FILE': config.get(section, 'SUBSCRIBER_FILE'),
'TGID_FILE': config.get(section, 'TGID_FILE'),
'PEER_URL': config.get(section, 'PEER_URL'),
'SUBSCRIBER_URL': config.get(section, 'SUBSCRIBER_URL'),
'STALE_TIME': config.getint(section, 'STALE_DAYS') * 86400,
})
elif config.getboolean(section, 'ENABLED'):
if config.get(section, 'MODE') == 'PEER':
CONFIG['SYSTEMS'].update({section: {
'MODE': config.get(section, 'MODE'),
'ENABLED': config.getboolean(section, 'ENABLED'),
'LOOSE': config.getboolean(section, 'LOOSE'),
'SOCK_ADDR': (gethostbyname(config.get(section, 'IP')), config.getint(section, 'PORT')),
'IP': gethostbyname(config.get(section, 'IP')),
'PORT': config.getint(section, 'PORT'),
'MASTER_SOCKADDR': (gethostbyname(config.get(section, 'MASTER_IP')), config.getint(section, 'MASTER_PORT')),
'MASTER_IP': gethostbyname(config.get(section, 'MASTER_IP')),
'MASTER_PORT': config.getint(section, 'MASTER_PORT'),
'PASSPHRASE': bytes(config.get(section, 'PASSPHRASE'), 'utf-8'),
'CALLSIGN': bytes(config.get(section, 'CALLSIGN').ljust(8)[:8], 'utf-8'),
'RADIO_ID': config.getint(section, 'RADIO_ID').to_bytes(4, 'big'),
'RX_FREQ': bytes(config.get(section, 'RX_FREQ').ljust(9)[:9], 'utf-8'),
'TX_FREQ': bytes(config.get(section, 'TX_FREQ').ljust(9)[:9], 'utf-8'),
'TX_POWER': bytes(config.get(section, 'TX_POWER').rjust(2,'0'), 'utf-8'),
'COLORCODE': bytes(config.get(section, 'COLORCODE').rjust(2,'0'), 'utf-8'),
'LATITUDE': bytes(config.get(section, 'LATITUDE').ljust(8)[:8], 'utf-8'),
'LONGITUDE': bytes(config.get(section, 'LONGITUDE').ljust(9)[:9], 'utf-8'),
'HEIGHT': bytes(config.get(section, 'HEIGHT').rjust(3,'0'), 'utf-8'),
'LOCATION': bytes(config.get(section, 'LOCATION').ljust(20)[:20], 'utf-8'),
'DESCRIPTION': bytes(config.get(section, 'DESCRIPTION').ljust(19)[:19], 'utf-8'),
'SLOTS': bytes(config.get(section, 'SLOTS'), 'utf-8'),
'URL': bytes(config.get(section, 'URL').ljust(124)[:124], 'utf-8'),
'SOFTWARE_ID': bytes(config.get(section, 'SOFTWARE_ID').ljust(40)[:40], 'utf-8'),
'PACKAGE_ID': bytes(config.get(section, 'PACKAGE_ID').ljust(40)[:40], 'utf-8'),
'GROUP_HANGTIME': config.getint(section, 'GROUP_HANGTIME'),
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'OPTIONS': bytes(config.get(section, 'OPTIONS'), 'utf-8'),
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'USE_ACL': config.getboolean(section, 'USE_ACL'),
'SUB_ACL': config.get(section, 'SUB_ACL'),
'TG1_ACL': config.get(section, 'TGID_TS1_ACL'),
'TG2_ACL': config.get(section, 'TGID_TS2_ACL')
}})
CONFIG['SYSTEMS'][section].update({'STATS': {
'CONNECTION': 'NO', # NO, RTPL_SENT, AUTHENTICATED, CONFIG-SENT, YES
'CONNECTED': None,
'PINGS_SENT': 0,
'PINGS_ACKD': 0,
'NUM_OUTSTANDING': 0,
'PING_OUTSTANDING': False,
'LAST_PING_TX_TIME': 0,
'LAST_PING_ACK_TIME': 0,
}})
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if config.get(section, 'MODE') == 'XLXPEER':
CONFIG['SYSTEMS'].update({section: {
'MODE': config.get(section, 'MODE'),
'ENABLED': config.getboolean(section, 'ENABLED'),
'LOOSE': config.getboolean(section, 'LOOSE'),
'SOCK_ADDR': (gethostbyname(config.get(section, 'IP')), config.getint(section, 'PORT')),
'IP': gethostbyname(config.get(section, 'IP')),
'PORT': config.getint(section, 'PORT'),
'MASTER_SOCKADDR': (gethostbyname(config.get(section, 'MASTER_IP')), config.getint(section, 'MASTER_PORT')),
'MASTER_IP': gethostbyname(config.get(section, 'MASTER_IP')),
'MASTER_PORT': config.getint(section, 'MASTER_PORT'),
'PASSPHRASE': bytes(config.get(section, 'PASSPHRASE'), 'utf-8'),
'CALLSIGN': bytes(config.get(section, 'CALLSIGN').ljust(8)[:8], 'utf-8'),
'RADIO_ID': config.getint(section, 'RADIO_ID').to_bytes(4, 'big'),
'RX_FREQ': bytes(config.get(section, 'RX_FREQ').ljust(9)[:9], 'utf-8'),
'TX_FREQ': bytes(config.get(section, 'TX_FREQ').ljust(9)[:9], 'utf-8'),
'TX_POWER': bytes(config.get(section, 'TX_POWER').rjust(2,'0'), 'utf-8'),
'COLORCODE': bytes(config.get(section, 'COLORCODE').rjust(2,'0'), 'utf-8'),
'LATITUDE': bytes(config.get(section, 'LATITUDE').ljust(8)[:8], 'utf-8'),
'LONGITUDE': bytes(config.get(section, 'LONGITUDE').ljust(9)[:9], 'utf-8'),
'HEIGHT': bytes(config.get(section, 'HEIGHT').rjust(3,'0'), 'utf-8'),
'LOCATION': bytes(config.get(section, 'LOCATION').ljust(20)[:20], 'utf-8'),
'DESCRIPTION': bytes(config.get(section, 'DESCRIPTION').ljust(19)[:19], 'utf-8'),
'SLOTS': bytes(config.get(section, 'SLOTS'), 'utf-8'),
'URL': bytes(config.get(section, 'URL').ljust(124)[:124], 'utf-8'),
'SOFTWARE_ID': bytes(config.get(section, 'SOFTWARE_ID').ljust(40)[:40], 'utf-8'),
'PACKAGE_ID': bytes(config.get(section, 'PACKAGE_ID').ljust(40)[:40], 'utf-8'),
'GROUP_HANGTIME': config.getint(section, 'GROUP_HANGTIME'),
'XLXMODULE': config.getint(section, 'XLXMODULE'),
'OPTIONS': '',
'USE_ACL': config.getboolean(section, 'USE_ACL'),
'SUB_ACL': config.get(section, 'SUB_ACL'),
'TG1_ACL': config.get(section, 'TGID_TS1_ACL'),
'TG2_ACL': config.get(section, 'TGID_TS2_ACL')
}})
CONFIG['SYSTEMS'][section].update({'XLXSTATS': {
'CONNECTION': 'NO', # NO, RTPL_SENT, AUTHENTICATED, CONFIG-SENT, YES
'CONNECTED': None,
'PINGS_SENT': 0,
'PINGS_ACKD': 0,
'NUM_OUTSTANDING': 0,
'PING_OUTSTANDING': False,
'LAST_PING_TX_TIME': 0,
'LAST_PING_ACK_TIME': 0,
}})
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elif config.get(section, 'MODE') == 'MASTER':
CONFIG['SYSTEMS'].update({section: {
'MODE': config.get(section, 'MODE'),
'ENABLED': config.getboolean(section, 'ENABLED'),
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'APRS_ENABLED': config.getboolean(section, 'APRS_ENABLED'),
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'REPEAT': config.getboolean(section, 'REPEAT'),
'MAX_PEERS': config.getint(section, 'MAX_PEERS'),
'IP': gethostbyname(config.get(section, 'IP')),
'PORT': config.getint(section, 'PORT'),
'PASSPHRASE': bytes(config.get(section, 'PASSPHRASE'), 'utf-8'),
'GROUP_HANGTIME': config.getint(section, 'GROUP_HANGTIME'),
'USE_ACL': config.getboolean(section, 'USE_ACL'),
'REG_ACL': config.get(section, 'REG_ACL'),
'SUB_ACL': config.get(section, 'SUB_ACL'),
'TG1_ACL': config.get(section, 'TGID_TS1_ACL'),
'TG2_ACL': config.get(section, 'TGID_TS2_ACL')
}})
CONFIG['SYSTEMS'][section].update({'PEERS': {}})
elif config.get(section, 'MODE') == 'OPENBRIDGE':
CONFIG['SYSTEMS'].update({section: {
'MODE': config.get(section, 'MODE'),
'ENABLED': config.getboolean(section, 'ENABLED'),
'NETWORK_ID': config.getint(section, 'NETWORK_ID').to_bytes(4, 'big'),
'IP': gethostbyname(config.get(section, 'IP')),
'PORT': config.getint(section, 'PORT'),
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'PASSPHRASE': bytes(config.get(section, 'PASSPHRASE').ljust(20,'\x00')[:20], 'utf-8'),
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'TARGET_SOCK': (gethostbyname(config.get(section, 'TARGET_IP')), config.getint(section, 'TARGET_PORT')),
'TARGET_IP': gethostbyname(config.get(section, 'TARGET_IP')),
'TARGET_PORT': config.getint(section, 'TARGET_PORT'),
'BOTH_SLOTS': config.getboolean(section, 'BOTH_SLOTS'),
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'USE_ACL': config.getboolean(section, 'USE_ACL'),
'SUB_ACL': config.get(section, 'SUB_ACL'),
'TG1_ACL': config.get(section, 'TGID_ACL'),
'TG2_ACL': 'PERMIT:ALL'
}})
except configparser.Error as err:
sys.exit('Error processing configuration file -- {}'.format(err))
process_acls(CONFIG)
return CONFIG
# Used to run this file direclty and print the config,
# which might be useful for debugging
if __name__ == '__main__':
import sys
import os
import argparse
from pprint import pprint
from dmr_utils3.utils import int_id
# Change the current directory to the location of the application
os.chdir(os.path.dirname(os.path.realpath(sys.argv[0])))
# CLI argument parser - handles picking up the config file from the command line, and sending a "help" message
parser = argparse.ArgumentParser()
parser.add_argument('-c', '--config', action='store', dest='CONFIG_FILE', help='/full/path/to/config.file (usually hblink.cfg)')
cli_args = parser.parse_args()
# Ensure we have a path for the config file, if one wasn't specified, then use the execution directory
if not cli_args.CONFIG_FILE:
cli_args.CONFIG_FILE = os.path.dirname(os.path.abspath(__file__))+'/hblink.cfg'
CONFIG = build_config(cli_args.CONFIG_FILE)
pprint(CONFIG)
def acl_check(_id, _acl):
id = int_id(_id)
for entry in _acl[1]:
if entry[0] <= id <= entry[1]:
return _acl[0]
return not _acl[0]
print(acl_check(b'\x00\x01\x37', CONFIG['GLOBAL']['TG1_ACL']))
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