#!/usr/bin/env python3
import sys
import os
import re
import signal
import time
import subprocess
import requests
import json
try:
    import configparser
except:
    import ConfigParser as configparser
import daemon
try:
    from xmlrpc import client
except:
    import xmlrpclib as client
import lockfile
import logging.handlers
from logging import config as cfg
import ssl
import psutil


oldsignals = {}
try:
    for sig in signal.Signals:
        try:
            oldsignals.setdefault(sig.name, signal.getsignal(sig))
            signal.signal(sig.value, signal.SIG_IGN)
        except:
            continue
except:
    allsignals = [s for s in dir(signal) if s[0:3] == 'SIG']
    for sig in allsignals:
        try:
            oldsignals.setdefault(sig,getattr(signal,sig))
            signal.signal(getattr(signal,sig), signal.SIG_IGN)
        except:
            continue

#
# START EDITABLE VARS (OVERRIDES VALUES IN CONFIGFILE)
#

# DEBUG = 1

# MODE = 'PROCEDURAL'
MODE = 'THREADED'

CONFIGFILE = '/etc/lliurex-analytics/agent.cfg'
# CONFIGFILE = 'config.txt'

# OVERRIDE_SEND_PERMISSION   = 1

# MIN_LOG_LEVEL = 'debug'

# DAEMON_MODE = 1

# FILELOCK = '/tmp/analytics'

PIDFILE = '/var/run/analytics.pid'
FILELOCK = '/var/run/analytics.pid'

# PIDFILE = '/tmp/analitics.pid'

# STATUSFILE = '/etc/lliurex-analytics/status'

# TIMEOUT = 1

#
# END EDITABLE VARS #
#


if MODE == 'PROCEDURAL':
    from multiprocessing import Process, Manager, get_logger
    str_formatter = '(%(processName)s)'
if MODE == 'THREADED':
    from multiprocessing.dummy import Process, Manager
    from multiprocessing import get_logger
    str_formatter = '(%(threadName)s)'

def get_var_value(varname, config=None, mode='string', section='Agent'):
    value = None

    if config:
        varname = varname.lower()
        try:
            if mode == 'string':
                value = config.get(section, varname)
            elif mode == 'bool':
                value = config.getboolean(section, varname)
            elif mode == 'int':
                value = config.getint(section, varname)
            elif mode == 'float':
                value = config.getfloat(section, varname)
        except:
            pass

    def f(item):
        if isinstance(item, str) or isinstance(item, bool) or isinstance(item, int) or isinstance(item, float):
            return True
        else:
            return False

    for x in (v for v in globals() if varname.lower() == v.lower() and f(globals()[v])):
        value = globals()[x]

    if mode == 'string':
        return str(value)
    elif mode == 'bool':
        return bool(value)
    elif mode == 'int':
        return int(value)
    elif mode == 'float':
        return float(value)
    else:
        return value

loglevel = None
CONFIG = None

def set_loglevel():
    global loglevel,CONFIG
    namelevel = False
    with_debug = False
    set_level = False
    set_to_default = False

    if get_var_value('DEBUG',config=CONFIG, mode='bool'):
        with_debug = True
        loglevel = get_var_value('MIN_LOG_LEVEL',config=CONFIG)
        if loglevel:
            namelevel = loglevel
            set_level = True
            set_to_default = False
            if loglevel == 'debug' or loglevel == logging.DEBUG:
                loglevel = logging.DEBUG
            elif loglevel == 'critical' or loglevel == logging.CRITICAL:
                loglevel = logging.CRITICAL
            elif loglevel == 'error' or loglevel == logging.ERROR:
                loglevel = logging.ERROR
            elif loglevel == 'warning' or loglevel == logging.WARNING:
                loglevel = logging.WARNING
            elif loglevel == 'info' or loglevel == logging.INFO:
                loglevel = logging.INFO
            else:
                loglevel = logging.DEBUG
                set_to_default = True
        else:
            set_level = False
            set_to_default = True
            loglevel = logging.DEBUG
    else:
        with_debug = False
        namelevel = 'info'
        set_to_default = True
        loglevel = logging.INFO

    print('set_loglevel to {}, explicitly {}, debug is {}, default mode {}'.format(namelevel,set_level,with_debug,set_to_default))

set_loglevel()

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
#            'format': '%(levelname)s %(module)s (%(pathname)s:%(lineno)d) ' + str_formatter  + ' %(message)s'
            'format': '%(levelname)s %(module)s ' + str_formatter + ' %(message)s'
        },
    },
    'handlers': {
        'stdout': {
            'class': 'logging.StreamHandler',
            'stream': sys.stdout,
            'formatter': 'verbose',
        },
        'sys-logger6': {
            'class': 'logging.handlers.SysLogHandler',
            'address': '/dev/log',
            'facility': "local6",
            'formatter': 'verbose',
        },
    },
    'loggers': {
        'analytics-logger': {
            'handlers': ['sys-logger6', 'stdout'],
            'level': loglevel,
            'propagate': True,
        },
    }
}


cfg.dictConfig(LOGGING)
log = logging.getLogger('analytics-logger')


def print_config(config):
    global log

    try:
        for sect in config:
            for key in config[sect]:
                log.debug("Config Loaded: '{}' '{}' '{}'".format(sect, key, config[sect][key]))
    except:
        for sect in config.sections():
            for key in config.options(sect):
                log.debug("Config Loaded: '{}' '{}' '{}'".format(sect, key, config.get(sect,key)))


def init_config():

    config = configparser.ConfigParser()
    config.read(CONFIGFILE)

    return config


def init_logging(config):
    global DEBUG, log, loglevel, mpl

    mpl = get_logger()
    mpl.setLevel(loglevel)
    for hdl in log.handlers:
        mpl.addHandler(hdl)
    mpl.propagate = True
    set_loglevel()
    if get_var_value('DEBUG', config):
        DEBUG = True
        log.setLevel(loglevel)
        print_config(config)


def bin_to_ascii(value):
    global log

    try:
        if isinstance(value, bytes):
            return value.decode('utf-8')
        else:
            return value
    except Exception as e:
        log.error('Error bin_to_ascii {}'.format(e))
        return value


def get_llx_version():
    global log
    if sys.version_info[0] > 2:
        output = bin_to_ascii(subprocess.check_output(['lliurex-version','-n']))
    else:
        output = bin_to_ascii(subprocess.check_output(['bash','lliurex-version','-n']))
    full_release = output.strip()
    release = output[0:2].strip()
    if release == '15':
        use = ['lliurex-detect','-f']
        output = bin_to_ascii(subprocess.check_output(use))
    else:
        if sys.version_info[0] > 2:
            use = ['lliurex-version','-f']
        else:
            use = ['bash','lliurex-version','-f']
        output = bin_to_ascii(subprocess.check_output(use))
    flavour = output.strip()
    #log.info("Detected release:'{}' flavour:'{}'".format(release, flavour))
    return release, flavour, full_release


def detect_proxy():
    global log

    px = subprocess.Popen(["bash", "-c", "source /etc/profile && echo $http_proxy"], stdout=subprocess.PIPE)
    proxy = bin_to_ascii(px.stdout.readline()).strip()
    #log.info("Detected proxy: '{}'".format(proxy))
    return proxy


def valid_fd(fd):
    try:
        os.fstat(fd)
        return True
    except:
        return False

def daemonize(*args, **kwargs):
    global glob, log, CONFIG

    log.info('Running daemon mode...')
    filelock = get_var_value('filelock', CONFIG)
    if not filelock:
        filelock = '/var/run/analytics.pid'
    if os.path.isfile(filelock):
        try:
            os.unlink(filelock)
        except:
            log.error('Unable to remove old pidfile {}'.format(filelock))

    preserve = []
    for x in [log.handlers[0].socket.fileno(),get_logger().handlers[0].socket.fileno()]:
        if valid_fd(x):
            preserve.append(x)
    try:
        with daemon.DaemonContext(detach_process=True,
                                  working_directory='/tmp',
                                  umask=0o002,
                                  pidfile=lockfile.FileLock(filelock),
                                  files_preserve=preserve):
            start(**kwargs)
    except Exception as e:
        log.critical("Error daemonizing {}".format(e))
        sys.exit(1)


def add_item(item,regexp):
    global glob, log

    log.debug('Request to add {}'.format(item))

    parts_item = item.split(' ')

    executable = None
    for i in range(len(parts_item)):
        executable = parts_item[i].strip()
        if '/' in executable:
            executable = executable.split('/')[-1]
            log.debug('Trimming executable to {}'.format(executable))
        if not re.match(regexp,executable):
            log.debug('Skipping malformed executable {}'.format(executable))
            executable = None
            continue
        if executable in glob['INTERPRETERS']:
            log.debug('Trimming interpreter part {}'.format(executable))
            executable = None
            continue
        else:
            if executable in glob['BLACKLIST']:
                log.debug('Skipping add due to blacklisted command {}'.format(executable))
                return None
            log.debug('Valid executable {}'.format(executable))
            break

    the_list = glob['LIST']
    if executable:
        if executable in the_list:
            the_list[executable] = the_list[executable] + 1
            log.debug('+++ Incrementing {} = {}'.format(executable, the_list[executable]))
        else:
            log.debug('*** Adding {} = 1'.format(executable, 1))
            the_list[executable] = 1
    glob['LIST'] = the_list

def monitor():
    global glob, log

    log.info('Start monitor')
    logfilename = get_var_value('file', glob['config'], section='Audit')

    glob['BLACKLIST'] = get_var_value('blacklist', glob['config'], section='Audit')
    glob['INTERPRETERS'] = get_var_value('interpreters', glob['config'], section='Audit')

    try:
        glob['INTERPRETERS'] = [x.strip() for x in glob['INTERPRETERS'].split(',')]
    except Exception as e:
        log.error('Malformed interpreters list ,{}'.format(e))
        glob['INTERPRETERS'] = []
        return None

    try:
        with open(glob['BLACKLIST'], 'r') as fp:
            glob['BLACKLIST'] = [line.strip() for line in fp]
    except Exception as e:
        log.error('Unable to read blacklist from {} , {}'.format(glob['BLACKLIST'], e))
        glob['BLACKLIST'] = []
        return None

    try:
        if not (os.path.isfile(logfilename) and os.access(logfilename, os.R_OK)):
            log.critical('File {} not readable'.format(logfilename))
            glob['TERMINATE'] = True

        fp = subprocess.Popen(['tail', '-n', '0', '-F', logfilename], stdout=subprocess.PIPE, stderr=open(os.devnull, 'w'))
        glob['monitor_pid'] = fp.pid
    except Exception as e:
        log.critical('Error initializing {} read, {}'.format(logfilename, e))
        glob['TERMINATE'] = True
        return None

    try:
        log.info('Starting monitoring {}'.format(logfilename))
        regexp = re.compile('^[a-zA-Z][a-zA-Z0-9_.+\-]+$')
        while not glob['TERMINATE']:
            if fp.poll() is not None:
                log.error('Dead subprocess monitoring {}'.format(logfilename))
                fp = subprocess.Popen(['tail', '-F', logfilename], stdout=subprocess.PIPE, stderr=open(os.devnull, 'w'))
                glob['monitor_pid'] = fp.pid
            else:
                line = bin_to_ascii(fp.stdout.readline()).strip()
                if re.search('type=EXECVE', line):
                    m = re.findall('a[0-9]+="([^"]+)"', line)
                    if m:
                        captured = ' '.join(m)
                        add_item(captured,regexp)

    except Exception as e:
        try:
            if isinstance(e, ConnectionResetError):
                log.info('Connection reset exitting monitor thread')
                glob['TERMINATE'] = True
                return
            else:
                log.error('Error reading file {}, {}'.format(logfilename, e))
                glob['TERMINATE'] = True
                return
        except:
            if e.errno == 32:
                log.info('Connection reset exitting monitor thread')
                glob['TERMINATE'] = True
                return
            else:
                log.error('Error reading file {}, {}'.format(logfilename, e))
                glob['TERMINATE'] = True
                return

    log.info('Exitting monitor thread')
    return

def update_list():
    global glob, log

    log.info('Start update list')
    retry = 3
    done = False
    while retry > 0:
        try:
            list_path = get_var_value('list_path', glob['config'], mode='string', section='Server')
            server = get_var_value('server', glob['config'], mode='string', section='Server')
            url = 'http://' + server + '/' + list_path
            agent = glob['user_agent']
            headers = {'user-agent': agent}
            retry = 0
            done = True
        except Exception as e:
            retry -= 1
            done = e

    if done != True :
        log.error('Error gettting update list settings {}'.format(done))

    log.debug('List path {}'.format(url))

    tick = 1
    timeout = 60 * 60 * 12
    c = 10

    while not glob['TERMINATE']:
        time.sleep(tick)
        if c > 0:
            c = c - tick
        else:
            c = timeout

            sent = False
            rq = None

            try:
                if glob['use_proxy']:
                    proxy_obj = dict()
                    proxy_obj.setdefault('http', glob['proxy'])

                    rq = requests.get(url, headers=headers, proxies=proxy_obj, timeout=5)
                    sent = True
                else:
                    rq = requests.get(url, headers=headers, timeout=5)
                    sent = True
            except Exception as e:
                log.warning('Error getting list from {}, {}'.format(url,e))

            try:
                blist = glob['BLACKLIST']
            except Exception as e:
                log.error('Error loading current blacklist on update_list, {}'.format(e))

            try:
                the_list = glob['LIST']
            except Exception as e:
                log.error('Error loading current applist on update_list, {}'.format(e))

            if sent and rq:
                result = rq.text
                try:
                    json_list = json.loads(result)
                except Exception as e:
                    log.warning('Wrong list received {}, {}'.format(result,e))
                    continue

                try:
                    for item in json_list:
                        if item not in blist:
                            blist.append(item)
                            log.info("Received item list '{}'".format(item))
                        if item in the_list:
                            del the_list[item]
                            log.info("Removed item from list '{}'".format(item))
                    glob['BLACKLIST'] = blist
                    glob['LIST'] = the_list
                except Exception as e:
                    log.error('Error updating blacklist, {}'.format(e))
            else:
                log.warning('Unable to get list data')

    log.info('Exitting update list thread')


def timed_send():
    global glob, log
    log.debug('Start timed_send ')
    try:
        count = get_var_value('timeout', glob['config'], mode='int')
        if count < 0:
            log.warning('Not valid timeout value setting default 300')
    except Exception as e:
        log.warning('Unable to read timeout value defaulting to 300, {}'.format(e))
        count = 300

    log.info('Initialized timed send with value {} seconds'.format(count))
    c = count
    tick = 0.2
    try:
        while not glob['TERMINATE']:
            while glob['PRINTING'] == True:
                time.sleep(1)
            time.sleep(tick)
            if c > 0:
                c = c - tick
            else:
                c = count
                log.debug('Triggering timed send')
                clean_and_send()

    except Exception as e:
        try:
            if isinstance(e, ConnectionResetError):
                log.info('Connection reset exitting timer thread')
            else:
                log.error('Error with timed send, {}'.format(e))
        except:
            if e.errno == 32:
                log.info('Connection reset exitting timer thread')
            else:
                log.error('Error with timed send, {}'.format(e))

    log.info('Exitting timer thread')
    return


def start(daemon_mode=False,release='Unknown',flavour='Unknown',proxy=False, **kwargs):
    global THREADS, oldsignals, log, CONFIG, glob, mgr

    log.info("Starting analytics")
    log.info('Initialization with release={} flavour={} proxy={}'.format(release,flavour,proxy))

    mgr = Manager()
    glob = mgr.dict()

    glob['DAEMON_MODE'] = daemon_mode
    glob['config'] = CONFIG

    glob['release'] = release
    glob['flavour'] = flavour
    if proxy:
        glob['proxy'] = proxy
        glob['use_proxy'] = True
    else:
        glob['proxy'] = False
        glob['use_proxy'] = False

    pidfile = get_var_value('pidfile', glob['config'])

    try:
        server = get_var_value('server', glob['config'], section='Server')
        server_path = get_var_value('server-path', glob['config'], section='Server')
        if server.strip() == '' or server_path.strip() == '':
            raise Exception('Empty server or server-path')
        glob['server'] = server
        glob['server_path'] = server_path
    except Exception as e:
        log.critical('Error getting server url, {}'.format(e))

    try:
        agent = get_var_value('user-agent', glob['config'])
        if agent.strip() == '' or agent == 'None':
            agent = 'lliurex-analytics-agent'
        glob['user_agent'] = agent
    except Exception as e:
        log.warning('Error getting user-agent, {}'.format(e))

        # write pid
    try:
        with open(pidfile, 'w') as fp:
            fp.write(str(os.getpid()))
    except Exception as e:
        log.error('Error writting pidfile {}'.format(e))

    glob['TERMINATE'] = False
    glob['PRINTING'] = False
    glob['LIST'] = {}

    glob['platform_data'] = get_platform_data()

    signals = {'SIGTERM': interrupt, 'SIGINT': interrupt, 'SIGUSR1': clean_and_send, 'SIGUSR2': show_captured}
    for sig in oldsignals:
        if sig in signals:
            signal.signal(signal.__dict__[sig], signals[sig])
        else:
            try:
                signal.signal(signal.__dict__[sig], oldsignals[sig])
            except:
                continue

    THREADS = dict()
    THREADS['monitor'] = Process(target=monitor, name='monitor')
    THREADS['monitor'].daemon = glob['DAEMON_MODE']

    THREADS['timed_send'] = Process(target=timed_send, name='timed_send')
    THREADS['timed_send'].daemon = glob['DAEMON_MODE']

    THREADS['update_list'] = Process(target=update_list, name='update_list')
    THREADS['update_list'].daemon = glob['DAEMON_MODE']

    THREADS['monitor'].start()
    THREADS['timed_send'].start()
    THREADS['update_list'].start()


def clean_and_send(*args, **kwargs):
    global glob, log

    override_send_permission = get_var_value('override_send_permission', glob['config'], mode='bool')

    if allow_send() or override_send_permission:
        send_data(glob['LIST'])
    else:
        log.info('Sending not allowed when try to send results')
    glob['LIST'] = {}


def get_mac():
    global log

    default_mac = '00:00:00:00:00:00'
    dirmac = '/sys/class/net'
    eth = None
    filemac = 'address'
    uid = None
    eths = sorted(os.listdir(dirmac))

    def remove_mac(mac):
        try:
            eths.remove(mac)
        except:
            pass

    remove_mac('lo')
    while len(eths):
        eth = eths[0]
        f = '{}/{}/{}'.format(dirmac, eth, filemac)
        try:
            with open(f, 'r') as fp:
                uid = str(bin_to_ascii(fp.read()).strip())
                if uid == default_mac:
                    raise Exception('Zero MAC')
                else:
                    break
        except Exception as e:
            log.warning('Exception {} on {}'.format(e,eth))
            remove_mac(eths[0])

    if not uid:
        log.error('Unable to read mac address, {}'.format(e))
        uid = default_mac

    return uid

def get_cpu():
    global log

    file = '/proc/cpuinfo'
    cpu = {}
    try:
        with open(file, 'r') as fp:
            for line in fp:
                if re.search('^processor\s+:\s+([0-9]+)$', line):
                    m = re.findall('^processor\s+:\s+([0-9]+)', line)
                    if m and len(m) > 0:
                        cpu['ncpus'] = int(m[0]) + 1
                if re.search('^model name\s+:\s+(.+)$', line):
                    m = re.findall('^model name\s+:\s+(.+)$', line)
                    if m and len(m) > 0:
                        cpu['model'] = str(m[0])
    except Exception as e:
        log.warning('Unable to read cpuinfo, {}'.format(e))
        cpu = None
    return cpu


def get_mem():
    global log

    file = '/proc/meminfo'
    mem = None

    try:
        with open(file, 'r') as fp:
            for line in fp:
                if re.search('^MemTotal:\s+([0-9]+)\s+\S+$', line):
                    m = re.findall('^MemTotal:\s+([0-9]+)\s+\S+$', line)
                    if m and len(m) > 0:
                        mem = int(m[0])
                        break
    except Exception as e:
        log.warning('Unable to read meminfo, {}'.format(e))
        mem = None
    return str(mem)


def get_vga():
    global log

    vga = None
    try:
        out = bin_to_ascii(subprocess.check_output(['lspci'])).split('\n')
        for line in out:
            line_strip = line.strip()
            if re.search('VGA', line_strip, re.IGNORECASE):
                m = re.findall('^\S+\s(.+)$', line_strip)
                if m and len(m) > 0:
                    vga = m[0]
                    break
    except Exception as e:
        log.warning('Unable to read pciinfo, {}'.format(e))
        vga = None
    return str(vga)


def get_arch():
    global log

    arch = None
    try:
        arch = bin_to_ascii(subprocess.check_output(['uname', '-m'])).strip()
    except Exception as e:
        log.warning('Unable to read architecture, {}'.format(e))
        arch = None
    return str(arch)

def get_subtype():
    global log

    subtype = { 'LTSP': None , 'MODE': None}
    try:
        rel,fla,full_rel = get_llx_version()
        if rel == '15':
            outtype = bin_to_ascii(subprocess.check_output(['lliurex-detect -a -e'],shell=True)).strip()
        else:
            outtype = bin_to_ascii(subprocess.check_output(['lliurex-version -a -e'],shell=True)).strip()
        outtype = outtype.split('\n')
        ltsp = None
        mode = None
        for line in outtype:
            if re.search('FAT=yes', line, re.IGNORECASE):
                mode = 'FAT'
            elif re.search('THIN=yes', line, re.IGNORECASE):
                mode = 'THIN'
            elif re.search('SEMI=yes', line, re.IGNORECASE):
                mode = 'SEMI'
            elif re.search('LTSP=yes', line, re.IGNORECASE):
                ltsp = True
        subtype['LTSP'] = ltsp
        subtype['MODE'] = mode
    except Exception as e:
        return subtype
    return subtype


def get_platform_data():
    global log

    data = {}
    data.setdefault('mac', get_mac())
    data.setdefault('cpu', get_cpu())
    data.setdefault('mem', get_mem())
    data.setdefault('vga', get_vga())
    data.setdefault('arch', get_arch())
    data.setdefault('subtype', get_subtype())

    log.debug("Detected mac='{}' arch='{}' cpu='{}' mem='{}' vga='{}' subtype='{}'".format(data['mac'], data['arch'], data['cpu'], data['mem'], data['vga'], data['subtype']))
    return data


def send_data(data):
    global log, glob

    log.debug('sending specs {}'.format(glob['platform_data']))
    log.debug('sending data {}'.format(glob['LIST']))

    agent = glob['user_agent']
    url = 'http://' + glob['server'] + '/' + glob['server_path']
    headers = {'user-agent': agent}

    version = glob['release']
    flavour = glob['flavour']

    list_data = data
    try:
        json_list_data = json.dumps(list_data)
    except Exception as e:
        log.error('Json error on internal data list')
        return None

    platform_data = glob['platform_data']
    uid = platform_data['mac']

    data_to_send = dict()
    data_to_send.setdefault('uid', uid)
    data_to_send.setdefault('vers', version)
    data_to_send.setdefault('sab', flavour)
    data_to_send.setdefault('specs', platform_data)
    data_to_send.setdefault('stats', json_list_data)

    try:
        json_data_to_send = json.dumps(data_to_send)
    except Exception as e:
        log.error('Json error on data to send')
        return None

    payload = {'stats': json_data_to_send}
    log.debug('Payload to send: {}'.format(payload))

    sent = False
    rq = None
    if glob['use_proxy']:
        proxy_obj = dict()
        proxy_obj.setdefault('http', glob['proxy'])
        try:
            rq = requests.post(url, data=payload, headers=headers, proxies=proxy_obj, timeout=5)
            sent = True
        except Exception as e:
            log.error('Error sending data through proxy, {}'.format(e))

    if not glob['use_proxy'] or sent == False:
        try:
            rq = requests.post(url, data=payload, headers=headers, timeout=5)
            sent = True
        except Exception as e:
            log.error('Error sending data, {}'.format(e))

    if sent and rq:
        result = rq.text
        result = result.strip().lower()
        if result == 'ok':
            log.debug('Sending was success with reply OK ')
        elif result == 'nok':
            log.info('Sending was success but reply is NOK ')
        else:
            log.warning("Sending was success but reply is unknown '{}'".format(result))
    else:
        log.warning('Unable to send data')


def interrupt(*args, **kwargs):
    global glob, log, THREADS, mgr

    log.info('Interrupting analytics')
    try:
        clean_and_send()
        try:
            glob['TERMINATE'] = True
            os.kill(glob['monitor_pid'],signal.SIGKILL)
        except Exception as e:
            log.error('Requested kill the program {}'.format(e))
            sys.exit(1)
        for x in THREADS:
            THREADS[x].join(1)
            log.info('Interrupt: Joined {}'.format(x))

    except Exception as e:
        log.error('Error while interrupting, {}'.format(e))


def show_captured(*args, **kwargs):
    global glob, log

    glob['PRINTING'] = True
    log.info('Requested to show list')

    list_items = glob['LIST']
    if not isinstance(list_items, dict):
        log.warning('Error showing captured items, LIST is not a dictionary')

    listkeys_sorted = sorted(list_items, key=list_items.get, reverse=True)

    if len(listkeys_sorted) > 0:
        log.info('analytics is showing currently capture list in memory')
        for i in listkeys_sorted:
            log.info('{} = {}'.format(i, list_items.get(i)))
    else:
        log.info('analytics detect an empty capture list in memory')

    glob['PRINTING'] = False


def check_server_acknowledge():
    global log

    try:
        c = client.ServerProxy("https://server:9779/",
                               verbose=False,
                               use_datetime=True,
                               context=ssl._create_unverified_context())
        return c.get_variable("", "VariablesManager", "STATS_ENABLED")
    except Exception as e:
        log.error('Error getting variables, {}'.format(e))
        return None


def check_local_acknowledge():
    global glob, log

    if glob['TERMINATE']:
        return None

    try:
        statusfile = get_var_value('statusfile', glob['config'])
        if str(statusfile) == 'None':
            statusfile = '/etc/lliurex-analytics/status'
            log.warning('Warning statusfile not set, defaulting to {}'.format(statusfile))
    except Exception as e:
        log.error('Error getting value for statusfile, {}'.format(e))

    answer = None
    try:

        if os.path.isfile(statusfile):
            fp = open(statusfile, 'r')
            answer = fp.readline()
            fp.close()
        else:
            log.error('wrong statusfile {}'.format(statusfile))
            return None

        return answer.strip()
    except Exception as e:
        log.warning('Error reading status file, {}'.format(e))
        return None


def allow_send():
    global glob, log

    if glob['TERMINATE']:
        return False

    if glob['flavour'].lower() == 'server':
        answer = str(check_server_acknowledge())
        answer = answer.strip()
        if answer == '1':
            log.info('Allowed to send stats checking server acknowledge')
            return True
        elif answer == '0':
            log.info('Denied to send stats checking server acknowledge')
            return False
        elif answer == 'None':
            pass
        else:
            log.info('Unknown value checking server acknowledge, {}'.format(answer))
    answer = str(check_local_acknowledge()).lower()
    answer = answer.strip()
    if answer == 'yes':
        log.info('Allowed to send stats checking local acknowledge')
        return True
    elif answer == 'no':
        log.info('Denied to send stats checking local acknowledge')
        return False
    elif answer == '':
        pass
    else:
        log.info('Unknown value checking local acknowledge, {}'.format(answer))

    log.info('Denied to send stats by default')
    return False


if __name__ == '__main__':
    exit = 0
    keyword='analytics'
    if sys.version[0] == '3':
        interpreter='python3'
    else:
        interpreter='python'
    for proc in psutil.process_iter():
        a=False
        b=False
        cmd=None
        try:
            cmd = proc.cmdline()
        except:
            cmd = proc.cmdline
        for argument in cmd:
            #print('{} {} {}'.format(cmd,keyword,argument[-len(keyword):]))
            if interpreter in argument[-len(interpreter):]:
                a = True
            if keyword in argument[-len(keyword):]:
                b = True
            if a and b:
                exit = exit +1
    if exit > 1:
        log.error('Another daemon is running')
        sys.exit(1)

    try:
        log.info('Initializing config')
        CONFIG = init_config()
    except Exception as e:
        log.error('Error initializing config analytics {}'.format(e))
        sys.exit(1)
    try:
        log.info('Initializing final logging')
        init_logging(CONFIG)
    except Exception as e:
        log.error('Error initializing logging analytics {}'.format(e))
        sys.exit(1)

    THREADS = {}

    try:
        release, flavour, full_release = get_llx_version()
    except Exception as e:
        log.error('Error getting llx version {}'.format(e))
        release = 'Unknown'
        flavour = 'Unknown'
        full_release = 'Unknown'

    proxy = ''
    try:
        proxy = detect_proxy()
        if proxy == '':
            #log.info('Not using proxy')
            proxy = False
    except Exception as e:
        log.warning('Error detecting proxy {}'.format(e))
        proxy = False

    DAEMON_MODE = get_var_value('DAEMON_MODE', CONFIG, 'bool')

    if DAEMON_MODE:
        daemonize(daemon_mode=True,flavour=flavour,release=full_release,proxy=proxy)
    else:
        start(daemon_mode=False,flavour=flavour,release=full_release,proxy=proxy)

    log.debug('End main')
    ended = False
    while not ended:
        ended = True
        for t in THREADS:
            THREADS[t].join(1)
            if THREADS[t].exitcode == None:
                ended = False
            else:
                log.info('Joined {}'.format(t))
    try:
        mgr.shutdown()
    except:
        pass

    log.info('Exitting analytics')
    sys.exit(0)