digipi/usr/local/etc/rmsgw/updatechannel.py

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Python
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#!/usr/bin/python3
# u p d a t e c h a n n e l . p y
# $Revision: 175 $
# $Author: eckertb $
# $Id: updatechannel.py 175 2014-10-19 19:01:52Z eckertb $
#
# Description:
# RMS Gateway - update the channel info currently stored in
# the winlink system
#
# RMS Gateway
#
# Copyright (c) 2004-2014 Hans-J. Barthen - DL5DI
# Copyright (c) 2008-2014 Brian R. Eckert - W3SG
#
# Questions or problems regarding this program can be emailed
# to linux-rmsgw@w3sg.org
#
# 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#
import sys
import re
import requests
import json
import platform
from xml.etree import ElementTree
from optparse import OptionParser
from distutils.version import LooseVersion
import syslog
#################################
# BEGIN CONFIGURATION SECTION
#################################
service_config_xml = '/etc/rmsgw/winlinkservice.xml'
gateway_config = '/etc/rmsgw/gateway.conf'
channel_config_xml = '/etc/rmsgw/channels.xml'
py_version_require='2.7.9'
#################################
# END CONFIGURATION SECTION
#################################
cmdlineparser = OptionParser()
cmdlineparser.add_option("-d", "--debug",
action="store_true", dest="DEBUG", default=False,
help="turn on debug output")
(options, args) = cmdlineparser.parse_args()
errors = 0
#
# dictionaries for config info
#
ws_config = {}
svc_calls = {}
gw_config = {}
param_roots = {}
#
# load gateway config
#
with open(gateway_config) as gwfile:
for line in gwfile:
if not line.strip().startswith('#'):
name, val = line.partition("=")[::2]
gw_config[name.strip()] = val.strip()
gwfile.close()
#
# setup syslog
#
fac = eval('syslog.LOG_' + gw_config['LOGFACILITY'].upper())
mask = eval('syslog.LOG_' + gw_config['LOGMASK'].upper())
syslog.openlog(logoption=syslog.LOG_PID, facility=fac)
syslog.setlogmask(syslog.LOG_UPTO(mask))
#
# check python version
#
python_version=platform.python_version()
if LooseVersion(python_version) >= LooseVersion(py_version_require):
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'Python Version Check: ' + str(python_version) + ' OK')
else:
syslog.syslog(syslog.LOG_ERR, 'Need more current Python version, require version: ' + str(py_version_require) + ' or newer')
print('Exiting ...')
syslog.closelog()
sys.exit(1)
#
# load service config from XML
#
winlink_service = ElementTree.parse(service_config_xml)
winlink_config = winlink_service.getroot()
for svc_config in winlink_config.iter('config'):
ws_config['WebServiceAccessCode'] = svc_config.find('WebServiceAccessCode').text
ws_config['svchost'] = svc_config.find('svchost').text
ws_config['svcport'] = svc_config.find('svcport').text
ws_config['namespace'] = svc_config.find('namespace').text
for svc_ops in svc_config.findall('svcops'):
for svc_call in svc_ops:
svc_calls[svc_call.tag] = svc_call.text
param_roots[svc_call.tag] = svc_call.attrib['paramRoot']
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'ws_config = {}'.format(ws_config))
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'svc_calls = {}'.format(svc_calls))
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'param_roots = {}'.format(param_roots))
#
# get gateway callsign from config
# the basecall
#
if 'GWCALL' in gw_config:
options.callsign = gw_config['GWCALL'].upper()
basecall=options.callsign.split("-", 1)[0]
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'basecallsign = {}'.format(basecall))
#
# prepare and make webservice call
#
headers = {'Content-Type' : 'application/xml'}
#headers = {
# 'Accept': 'application/xml',
# 'Content-Type': 'application/xml'
#}
# svc_url = 'http://' + ws_config['svchost'] + ':' + ws_config['svcport'] + svc_calls['channeladd']
# Needs to look like this:
svc_url = 'https://' + ws_config['svchost'] + svc_calls['channeladd'] + '?' + 'Callsign=' + format(options.callsign) + '&Key=' + format(ws_config['WebServiceAccessCode'] + '&format=json')
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'svc_url = {}'.format(svc_url))
#
# load channel info from XML
#
document = ElementTree.parse(channel_config_xml)
rmschannels = document.getroot()
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, "rmschannels xml = {}".format(ElementTree.tostring(rmschannels)))
#
# Prepare xml parameters for call
#
channel_add = ElementTree.Element(param_roots['channeladd'])
channel_add.set('xmlns:i', 'http://www.w3.org/2001/XMLSchema-instance')
channel_add.set('xmlns', ws_config['namespace'])
ElementTree.SubElement(channel_add, "BaseCallsign")
ElementTree.SubElement(channel_add, "Baud")
ElementTree.SubElement(channel_add, "Callsign")
ElementTree.SubElement(channel_add, "Frequency")
ElementTree.SubElement(channel_add, "GridSquare")
ElementTree.SubElement(channel_add, "Mode")
ElementTree.SubElement(channel_add, "Power")
ElementTree.SubElement(channel_add, "Height")
ElementTree.SubElement(channel_add, "Gain")
ElementTree.SubElement(channel_add, "Direction")
ElementTree.SubElement(channel_add, "Hours")
ElementTree.SubElement(channel_add, "ServiceCode")
ElementTree.SubElement(channel_add, "Key")
#ElementTree.SubElement(channel_add, "Comments")
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'bare channel_add XML = {}'.format(ElementTree.tostring(channel_add)))
#
# with each configured channel,
# populate call xml tree with values from
# gateway channel config and make service call
#
ns = ws_config['namespace']
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'ns from ws_config = {}'.format(ns))
ns = '{http://www.namespace.org}'
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'ns = {}'.format(ns))
#if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'ns = {}'.format(ns))
for channel in rmschannels.findall("%schannel" % (ns)):
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'channel xml = {}'.format(ElementTree.tostring(channel)))
callsign = channel.find("%scallsign" % (ns)).text
syslog.syslog(syslog.LOG_INFO, 'Posting channel record updates for {}...'.format(callsign))
#
# prepare xml parameters for call
#
channel_add.find('BaseCallsign').text = channel.find('%sbasecall' % (ns)).text
channel_add.find('Baud').text = channel.find('%sbaud' % (ns)).text
channel_add.find('Callsign').text = channel.find('%scallsign' % (ns)).text
channel_add.find('Direction').text = channel.find('%sdirection' % (ns)).text
channel_add.find('Frequency').text = channel.find('%sfrequency' % (ns)).text
channel_add.find('Gain').text = channel.find('%sgain' % (ns)).text
channel_add.find('GridSquare').text = channel.find('%sgridsquare' % (ns)).text
channel_add.find('Height').text = channel.find('%sheight' % (ns)).text
channel_add.find('Mode').text = channel.find('%smode' % (ns)).text
channel_add.find('Power').text = channel.find('%spower' % (ns)).text
channel_add.find('Hours').text = channel.find('%shours' % (ns)).text
channel_add.find('ServiceCode').text = channel.find('%sservicecode' % (ns)).text
channel_add.find('Key').text = ws_config['WebServiceAccessCode']
# channel_add.find('Comments').text = channel.find('%scomments' % (ns)).text
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'channel_add XML = {}'.format(ElementTree.tostring(channel_add)))
# Post the request
try:
response = requests.post(svc_url, data=ElementTree.tostring(channel_add), headers=headers)
except requests.ConnectionError as e:
syslog.syslog(syslog.LOG_DEBUG,"Error: Internet connection failure:")
syslog.syslog(syslog.LOG_DEBUG, 'svc_url = {}'.format(svc_url))
syslog.syslog(syslog.LOG_DEBUG, str(e))
syslog.closelog()
sys.exit(1)
if options.DEBUG: syslog.syslog(syslog.LOG_DEBUG, 'Response = {}'.format(response.content))
json_data = response.json()
if options.DEBUG: print((json.dumps(json_data, indent=2)))
json_dict = json.loads(response.text)
# print the return code of this request, should be 200 which is "OK"
if options.DEBUG: print(("Request status code: " + str(response.status_code)))
if options.DEBUG: print(('Debug: Response =', response.content))
if options.DEBUG: print(("Debug: Content type: " + response.headers['content-type']))
# print('ResponseStatus : ', response.json().get('ResponseStatus'))
#
# Verify request status code
#
if response.ok:
if options.DEBUG: print("Debug: Good Request status code")
else:
print(("Debug: Bad Response status code: " + str(response.status_code)))
print(('*** Get for', options.callsign, 'failed, ErrorCode =', str(response.status_code)))
print(('*** Error code: ' + json_dict['ResponseStatus']['ErrorCode']))
print(('*** Error message: ' + json_dict['ResponseStatus']['Message']))
syslog.closelog()
sys.exit(1)
#
# check for errors coming back first
#
if json_dict['ResponseStatus']:
print(('ResponseStatus not NULL: ', json_dict['ResponseStatus']))
syslog.closelog()
sys.exit(1)
else:
if options.DEBUG: print(('ResponseStatus is NULL: ', json_dict['ResponseStatus']))
syslog.closelog()
if errors > 0:
sys.exit(1)
#else
sys.exit(0)