config.py

   1 import ConfigParser
   2 import getopt
   3 import logging
   4 import logging.config
   5 import os
   6 import re
   7 import socket
   8 import sys
   9 import uuid
  10 from ConfigParser import NoOptionError
  11
  12 class Bdict(dict):
  13     def getboolean(self, x):
  14         return self.get(x, 'False').lower() in ('1', 'yes', 'true', 'on')
  15
  16 def init(argv):
  17     global tivos
  18     global tivo_names
  19     global guid
  20     global config_files
  21
  22     tivos = {}
  23     tivo_names = {}
  24     guid = uuid.uuid4()
  25
  26     config_win_default = ''
  27     if sys.platform == "win32":
  28         import _winreg
  29         try:
  30             explorerFolders = _winreg.OpenKey(
  31             _winreg.HKEY_LOCAL_MACHINE, 'Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders')
  32             winCommonAppDataVal, winCommonAppDataType = _winreg.QueryValueEx(explorerFolders, 'Common AppData')
  33             config_win_default = os.path.join(winCommonAppDataVal, 'pyTivo', 'pyTivo.conf')
  34         except WindowsError:
  35             print "Can't access Windows Registry to find common Application Data path."
  36
  37     p = os.path.dirname(__file__)
  38     config_files = ['/etc/pyTivo.conf', config_win_default, os.path.join(p, 'pyTivo.conf')]
  39
  40     try:
  41         opts, _ = getopt.getopt(argv, 'c:e:', ['config=', 'extraconf='])
  42     except getopt.GetoptError, msg:
  43         print msg
  44
  45     for opt, value in opts:
  46         if opt in ('-c', '--config'):
  47             config_files = [value]
  48         elif opt in ('-e', '--extraconf'):
  49             config_files.append(value)
  50
  51     reset()
  52
  53 def reset():
  54     global bin_paths
  55     global config
  56     global configs_found
  57
  58     bin_paths = {}
  59
  60     config = ConfigParser.ConfigParser()
  61     configs_found = config.read(config_files)
  62     if not configs_found:
  63         print ('WARNING: pyTivo.conf does not exist.\n' +
  64                'Assuming default values.')
  65         configs_found = config_files[-1:]
  66
  67     for section in config.sections():
  68         if section.startswith('_tivo_'):
  69             tsn = section[6:]
  70             if tsn.upper() not in ['SD', 'HD']:
  71                 if config.has_option(section, 'name'):
  72                     tivo_names[tsn] = config.get(section, 'name')
  73                 else:
  74                     tivo_names[tsn] = tsn
  75                 if config.has_option(section, 'address'):
  76                     tivos[tsn] = config.get(section, 'address')
  77
  78     for section in ['Server', '_tivo_SD', '_tivo_HD']:
  79         if not config.has_section(section):
  80             config.add_section(section)
  81
  82 def write():
  83     f = open(configs_found[-1], 'w')
  84     config.write(f)
  85     f.close()
  86
  87 def tivos_by_ip(tivoIP):
  88     for key, value in tivos.items():
  89         if value == tivoIP:
  90             return key
  91
  92 def get_server(name, default=None):
  93     if config.has_option('Server', name):
  94         return config.get('Server', name)
  95     else:
  96         return default
  97
  98 def getGUID():
  99     return str(guid)
 100
 101 def get_ip(tsn=None):
 102     dest_ip = tivos.get(tsn, '4.2.2.1')
 103     s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 104     s.connect((dest_ip, 123))
 105     return s.getsockname()[0]
 106
 107 def get_zc():
 108     opt = get_server('zeroconf', 'auto').lower()
 109
 110     if opt == 'auto':
 111         for section in config.sections():
 112             if section.startswith('_tivo_'):
 113                 if config.has_option(section, 'shares'):
 114                     logger = logging.getLogger('pyTivo.config')
 115                     logger.info('Shares security in use -- zeroconf disabled')
 116                     return False
 117     elif opt in ['false', 'no', 'off']:
 118         return False
 119
 120     return True
 121
 122 def get_mind(tsn):
 123     if tsn and tsn.startswith('663'):
 124         default = 'symind.tivo.com:8181'
 125     else:
 126         default = 'mind.tivo.com:8181'
 127     return get_server('tivo_mind', default)
 128
 129 def getBeaconAddresses():
 130     return get_server('beacon', '255.255.255.255')
 131
 132 def getPort():
 133     return get_server('port', '9032')
 134
 135 def get169Blacklist(tsn):  # tivo does not pad 16:9 video
 136     return tsn and not isHDtivo(tsn) and not get169Letterbox(tsn)
 137     # verified Blacklist Tivo's are ('130', '240', '540')
 138     # It is assumed all remaining non-HD and non-Letterbox tivos are Blacklist
 139
 140 def get169Letterbox(tsn):  # tivo pads 16:9 video for 4:3 display
 141     return tsn and tsn[:3] in ['649']
 142
 143 def get169Setting(tsn):
 144     if not tsn:
 145         return True
 146
 147     tsnsect = '_tivo_' + tsn
 148     if config.has_section(tsnsect):
 149         if config.has_option(tsnsect, 'aspect169'):
 150             try:
 151                 return config.getboolean(tsnsect, 'aspect169')
 152             except ValueError:
 153                 pass
 154
 155     if get169Blacklist(tsn) or get169Letterbox(tsn):
 156         return False
 157
 158     return True
 159
 160 def getAllowedClients():
 161     return get_server('allowedips', '').split()
 162
 163 def getIsExternal(tsn):
 164     tsnsect = '_tivo_' + tsn
 165     if tsnsect in config.sections():
 166         if config.has_option(tsnsect, 'external'):
 167             try:
 168                 return config.getboolean(tsnsect, 'external')
 169             except ValueError:
 170                 pass
 171
 172     return False
 173
 174 def isTsnInConfig(tsn):
 175     return ('_tivo_' + tsn) in config.sections()
 176
 177 def getShares(tsn=''):
 178     shares = [(section, Bdict(config.items(section)))
 179               for section in config.sections()
 180               if not (section.startswith(('_tivo_', 'logger_', 'handler_',
 181                                           'formatter_'))
 182                       or section in ('Server', 'loggers', 'handlers',
 183                                      'formatters')
 184               )
 185     ]
 186
 187     tsnsect = '_tivo_' + tsn
 188     if config.has_section(tsnsect) and config.has_option(tsnsect, 'shares'):
 189         # clean up leading and trailing spaces & make sure ref is valid
 190         tsnshares = []
 191         for x in config.get(tsnsect, 'shares').split(','):
 192             y = x.strip()
 193             if config.has_section(y):
 194                 tsnshares.append((y, Bdict(config.items(y))))
 195         shares = tsnshares
 196
 197     shares.sort()
 198
 199     if get_server('nosettings', 'false').lower() in ['false', 'no', 'off']:
 200         shares.append(('Settings', {'type': 'settings'}))
 201     if get_server('tivo_mak') and get_server('togo_path'):
 202         shares.append(('ToGo', {'type': 'togo'}))
 203
 204     return shares
 205
 206 def getDebug():
 207     try:
 208         return config.getboolean('Server', 'debug')
 209     except NoOptionError, ValueError:
 210         return False
 211
 212 def getOptres(tsn=None):
 213     try:
 214         return config.getboolean('_tivo_' + tsn, 'optres')
 215     except:
 216         try:
 217             return config.getboolean(get_section(tsn), 'optres')
 218         except:
 219             try:
 220                 return config.getboolean('Server', 'optres')
 221             except:
 222                 return False
 223
 224 def get_bin(fname):
 225     global bin_paths
 226
 227     logger = logging.getLogger('pyTivo.config')
 228
 229     if fname in bin_paths:
 230         return bin_paths[fname]
 231
 232     if config.has_option('Server', fname):
 233         fpath = config.get('Server', fname)
 234         if os.path.exists(fpath) and os.path.isfile(fpath):
 235             bin_paths[fname] = fpath
 236             return fpath
 237         else:
 238             logger.error('Bad %s path: %s' % (fname, fpath))
 239
 240     if sys.platform == 'win32':
 241         fext = '.exe'
 242     else:
 243         fext = ''
 244
 245     for path in ([os.path.join(os.path.dirname(__file__), 'bin')] +
 246                  os.getenv('PATH').split(os.pathsep)):
 247         fpath = os.path.join(path, fname + fext)
 248         if os.path.exists(fpath) and os.path.isfile(fpath):
 249             bin_paths[fname] = fpath
 250             return fpath
 251
 252     logger.warn('%s not found' % fname)
 253     return None
 254
 255 def getFFmpegWait():
 256     if config.has_option('Server', 'ffmpeg_wait'):
 257         return max(int(float(config.get('Server', 'ffmpeg_wait'))), 1)
 258     else:
 259         return 0
 260
 261 def getFFmpegTemplate(tsn):
 262     tmpl = get_tsn('ffmpeg_tmpl', tsn, True)
 263     if tmpl:
 264         return tmpl
 265     return '%(video_codec)s %(video_fps)s %(video_br)s %(max_video_br)s \
 266             %(buff_size)s %(aspect_ratio)s %(audio_br)s \
 267             %(audio_fr)s %(audio_ch)s %(audio_codec)s %(audio_lang)s \
 268             %(ffmpeg_pram)s %(format)s'
 269
 270 def getFFmpegPrams(tsn):
 271     return get_tsn('ffmpeg_pram', tsn, True)
 272
 273 def isHDtivo(tsn):  # tsn's of High Definition Tivo's
 274     return bool(tsn and tsn[0] >= '6' and tsn[:3] != '649')
 275
 276 def has_ts_flag():
 277     try:
 278         return config.getboolean('Server', 'ts')
 279     except NoOptionError, ValueError:
 280         return False
 281
 282 def is_ts_capable(tsn):  # tsn's of Tivos that support transport streams
 283     return bool(tsn and (tsn[0] >= '7' or tsn.startswith('663')))
 284
 285 def getValidWidths():
 286     return [1920, 1440, 1280, 720, 704, 544, 480, 352]
 287
 288 def getValidHeights():
 289     return [1080, 720, 480] # Technically 240 is also supported
 290
 291 # Return the number in list that is nearest to x
 292 # if two values are equidistant, return the larger
 293 def nearest(x, list):
 294     return reduce(lambda a, b: closest(x, a, b), list)
 295
 296 def closest(x, a, b):
 297     da = abs(x - a)
 298     db = abs(x - b)
 299     if da < db or (da == db and a > b):
 300         return a
 301     else:
 302         return b
 303
 304 def nearestTivoHeight(height):
 305     return nearest(height, getValidHeights())
 306
 307 def nearestTivoWidth(width):
 308     return nearest(width, getValidWidths())
 309
 310 def getTivoHeight(tsn):
 311     height = get_tsn('height', tsn)
 312     if height:
 313         return nearestTivoHeight(int(height))
 314     return [480, 1080][isHDtivo(tsn)]
 315
 316 def getTivoWidth(tsn):
 317     width = get_tsn('width', tsn)
 318     if width:
 319         return nearestTivoWidth(int(width))
 320     return [544, 1920][isHDtivo(tsn)]
 321
 322 def _trunc64(i):
 323     return max(int(strtod(i)) / 64000, 1) * 64
 324
 325 def getAudioBR(tsn=None):
 326     rate = get_tsn('audio_br', tsn)
 327     if not rate:
 328         rate = '448k'
 329     # convert to non-zero multiple of 64 to ensure ffmpeg compatibility
 330     # compare audio_br to max_audio_br and return lowest
 331     return str(min(_trunc64(rate), getMaxAudioBR(tsn))) + 'k'
 332
 333 def _k(i):
 334     return str(int(strtod(i)) / 1000) + 'k'
 335
 336 def getVideoBR(tsn=None):
 337     rate = get_tsn('video_br', tsn)
 338     if rate:
 339         return _k(rate)
 340     return ['4096K', '16384K'][isHDtivo(tsn)]
 341
 342 def getMaxVideoBR(tsn=None):
 343     rate = get_tsn('max_video_br', tsn)
 344     if rate:
 345         return _k(rate)
 346     return '30000k'
 347
 348 def getBuffSize(tsn=None):
 349     size = get_tsn('bufsize', tsn)
 350     if size:
 351         return _k(size)
 352     return ['1024k', '4096k'][isHDtivo(tsn)]
 353
 354 def getMaxAudioBR(tsn=None):
 355     rate = get_tsn('max_audio_br', tsn)
 356     # convert to non-zero multiple of 64 for ffmpeg compatibility
 357     if rate:
 358         return _trunc64(rate)
 359     return 448
 360
 361 def get_section(tsn):
 362     return ['_tivo_SD', '_tivo_HD'][isHDtivo(tsn)]
 363
 364 def get_tsn(name, tsn=None, raw=False):
 365     try:
 366         return config.get('_tivo_' + tsn, name, raw)
 367     except:
 368         try:
 369             return config.get(get_section(tsn), name, raw)
 370         except:
 371             try:
 372                 return config.get('Server', name, raw)
 373             except:
 374                 return None
 375
 376 # Parse a bitrate using the SI/IEEE suffix values as if by ffmpeg
 377 # For example, 2K==2000, 2Ki==2048, 2MB==16000000, 2MiB==16777216
 378 # Algorithm: http://svn.mplayerhq.hu/ffmpeg/trunk/libavcodec/eval.c
 379 def strtod(value):
 380     prefixes = {'y': -24, 'z': -21, 'a': -18, 'f': -15, 'p': -12,
 381                 'n': -9,  'u': -6,  'm': -3,  'c': -2,  'd': -1,
 382                 'h': 2,   'k': 3,   'K': 3,   'M': 6,   'G': 9,
 383                 'T': 12,  'P': 15,  'E': 18,  'Z': 21,  'Y': 24}
 384     p = re.compile(r'^(\d+)(?:([yzafpnumcdhkKMGTPEZY])(i)?)?([Bb])?$')
 385     m = p.match(value)
 386     if not m:
 387         raise SyntaxError('Invalid bit value syntax')
 388     (coef, prefix, power, byte) = m.groups()
 389     if prefix is None:
 390         value = float(coef)
 391     else:
 392         exponent = float(prefixes[prefix])
 393         if power == 'i':
 394             # Use powers of 2
 395             value = float(coef) * pow(2.0, exponent / 0.3)
 396         else:
 397             # Use powers of 10
 398             value = float(coef) * pow(10.0, exponent)
 399     if byte == 'B': # B == Byte, b == bit
 400         value *= 8;
 401     return value
 402
 403 def init_logging():
 404     if (config.has_section('loggers') and
 405         config.has_section('handlers') and
 406         config.has_section('formatters')):
 407
 408         logging.config.fileConfig(config_files)
 409
 410     elif getDebug():
 411         logging.basicConfig(level=logging.DEBUG)
 412     else:
 413         logging.basicConfig(level=logging.INFO)