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