PianobarMonitor

PianobarMonitor.py

#!/usr/bin/python
import subprocess
import re
import os
import select
import sys
import time
import urllib2

PIANOBAR_FOLDER = os.path.join(os.path.expanduser('~'), '.config/pianobar')
def internet_on():
    try:
        urllib2.urlopen('http://216.58.192.142', timeout=1)
        return True
    except:
        return False

def get_fingerprint():
    print ('Updating TLS Fingerprint...')
    connected = False
    while not connected:
        print ('checking internets')
        time.sleep(5)
        connected = internet_on()
    command = '''openssl s_client -connect tuner.pandora.com:443 < /dev/null 2> /dev/null | openssl x509 -noout -fingerprint | tr -d ':' | cut -d'=' -f2'''
    finger = os.popen(command).read()
    fingerprint = 'tls_fingerprint = ' + finger
    with open(pianobar_config, 'r+') as f:
        all_lines = f.readlines()
        for i in range(len(all_lines)):
            if 'tls_fingerprint' in all_lines[i]:
                all_lines[i] = fingerprint
        f.seek(0) 
        f.writelines(all_lines)
        f.truncate()

        
class PianoBar:
    def __init__(self, *args, **kwargs):
        """ Setup defaults.

        :param args:
        """
        self.number_of_stations = 0

    def start_pianobar(self):
        """ Starts pianobar.

        :param user: pandora username, probably a full email address
        :param station: initial station selection for the user
        """
        pb_process = subprocess.Popen(['/usr/local/bin/pianobar'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

        return pb_process

if __name__ == '__main__':
    station_regex = re.compile(r'[0-9]\) ')
    sentry_regex = re.compile(r'\[?\] Select station')
    radio = None
    num_stations_file = '/home/pi/.config/pianobar/station_file'
    pianobar_config = '/home/pi/.config/pianobar/config'
    get_fingerprint()
    while True:
        radio = PianoBar()
        pb_sub_process = radio.start_pianobar()
        inputs = [pb_sub_process.stdout.fileno(), pb_sub_process.stderr.fileno()]

        while True:
            readers, writers, exceptions = select.select(inputs, [], inputs)
            if not readers:
                time.sleep(0.3)
                continue

            for reader in readers:
                if reader == pb_sub_process.stdout.fileno():
                    read = pb_sub_process.stdout.readline()
                elif reader == pb_sub_process.stderr.fileno():
                    read = pb_sub_process.stderr.readline()

                if station_regex.search(read):
                    radio.number_of_stations += 1
                elif sentry_regex.search(read):
                    print("stations:")
                    print(str(radio.number_of_stations))
                    with open('/home/pi/.config/pianobar/station_file', 'w') as f:
                        f.write(str(radio.number_of_stations))

                sys.stdout.write(read)
                sys.stdout.flush()

            if pb_sub_process.poll() is not None:  #pb went away
                #time.sleep(2)
                break