def __init__(self, scfg=None, ignore_singleton=False):
"""
A Session object is created which is configured following a copy of the
SessionStartupConfig scfg. (copy constructor used internally)
@param scfg SessionStartupConfig object or None, in which case we
look for a saved session in the default location (state dir). If
we can't find it, we create a new SessionStartupConfig() object to
serve as startup config. Next, the config is saved in the directory
indicated by its 'state_dir' attribute.
In the current implementation only a single session instance can exist
at a time in a process. The ignore_singleton flag is used for testing.
"""
if not ignore_singleton:
if Session.__single:
raise RuntimeError, "Session is singleton"
Session.__single = self
self.sesslock = RLock()
# Determine startup config to use
if scfg is None: # If no override
try:
# Then try to read from default location
state_dir = Session.get_default_state_dir()
cfgfilename = Session.get_default_config_filename(state_dir)
scfg = SessionStartupConfig.load(cfgfilename)
except:
# If that fails, create a fresh config with factory defaults
print_exc()
scfg = SessionStartupConfig()
self.sessconfig = scfg.sessconfig
else: # overrides any saved config
# Work from copy
self.sessconfig = copy.copy(scfg.sessconfig)
#SmoothIT_
self._is_supporter_seed = False
self._supporter_ips = []
#_SmoothIT
# Create dir for session state, if not exist
state_dir = self.sessconfig['state_dir']
if state_dir is None:
state_dir = Session.get_default_state_dir()
self.sessconfig['state_dir'] = state_dir
if not os.path.isdir(state_dir):
os.makedirs(state_dir)
collected_torrent_dir = self.sessconfig['torrent_collecting_dir']
if not collected_torrent_dir:
collected_torrent_dir = os.path.join(self.sessconfig['state_dir'],
STATEDIR_TORRENTCOLL_DIR)
self.sessconfig['torrent_collecting_dir'] = collected_torrent_dir
if not os.path.exists(collected_torrent_dir):
os.makedirs(collected_torrent_dir)
if not self.sessconfig['peer_icon_path']:
self.sessconfig['peer_icon_path'] = os.path.join(
self.sessconfig['state_dir'], STATEDIR_PEERICON_DIR)
# PERHAPS: load default TorrentDef and DownloadStartupConfig from state dir
# Let user handle that, he's got default_state_dir, etc.
# Core init
#print >>sys.stderr,'Session: __init__ config is', self.sessconfig
if GOTM2CRYPTO:
permidmod.init()
#
# Set params that depend on state_dir
#
# 1. keypair
#
pairfilename = os.path.join(self.sessconfig['state_dir'], 'ec.pem')
if self.sessconfig['eckeypairfilename'] is None:
self.sessconfig['eckeypairfilename'] = pairfilename
if os.access(self.sessconfig['eckeypairfilename'], os.F_OK):
# May throw exceptions
self.keypair = permidmod.read_keypair(
self.sessconfig['eckeypairfilename'])
else:
self.keypair = permidmod.generate_keypair()
# Save keypair
pubfilename = os.path.join(self.sessconfig['state_dir'],
'ecpub.pem')
permidmod.save_keypair(self.keypair, pairfilename)
permidmod.save_pub_key(self.keypair, pubfilename)
# 2. Downloads persistent state dir
dlpstatedir = os.path.join(self.sessconfig['state_dir'],
STATEDIR_DLPSTATE_DIR)
if not os.path.isdir(dlpstatedir):
os.mkdir(dlpstatedir)
# 3. tracker
trackerdir = self.get_internal_tracker_dir()
if not os.path.isdir(trackerdir):
os.mkdir(trackerdir)
if self.sessconfig['tracker_dfile'] is None:
self.sessconfig['tracker_dfile'] = os.path.join(
trackerdir, 'tracker.db')
if self.sessconfig['tracker_allowed_dir'] is None:
self.sessconfig['tracker_allowed_dir'] = trackerdir
if self.sessconfig['tracker_logfile'] is None:
if sys.platform == "win32":
# Not "Nul:" but "nul" is /dev/null on Win32
sink = 'nul'
else:
sink = '/dev/null'
self.sessconfig['tracker_logfile'] = sink
# 4. superpeer.txt and crawler.txt
if self.sessconfig['superpeer_file'] is None:
self.sessconfig['superpeer_file'] = os.path.join(
self.sessconfig['install_dir'], LIBRARYNAME, 'Core',
'superpeer.txt')
if 'crawler_file' not in self.sessconfig or self.sessconfig[
'crawler_file'] is None:
self.sessconfig['crawler_file'] = os.path.join(
self.sessconfig['install_dir'], LIBRARYNAME, 'Core',
'Statistics', 'crawler.txt')
# 5. download_help_dir
if self.sessconfig['overlay'] and self.sessconfig['download_help']:
if self.sessconfig['download_help_dir'] is None:
self.sessconfig['download_help_dir'] = os.path.join(
get_default_dest_dir(), DESTDIR_COOPDOWNLOAD)
# Jelle: under linux, default_dest_dir can be /tmp. Then download_help_dir can be deleted inbetween
# sessions.
if not os.path.isdir(self.sessconfig['download_help_dir']):
os.makedirs(self.sessconfig['download_help_dir'])
# 6. peer_icon_path
if self.sessconfig['peer_icon_path'] is None:
self.sessconfig['peer_icon_path'] = os.path.join(
self.sessconfig['state_dir'], STATEDIR_PEERICON_DIR)
if not os.path.isdir(self.sessconfig['peer_icon_path']):
os.mkdir(self.sessconfig['peer_icon_path'])
# 7. Poor man's versioning of SessionConfig, add missing
# default values. Really should use PERSISTENTSTATE_CURRENTVERSION
# and do conversions.
for key, defvalue in sessdefaults.iteritems():
if key not in self.sessconfig:
self.sessconfig[key] = defvalue
if not 'live_aux_seeders' in self.sessconfig:
# Poor man's versioning, really should update PERSISTENTSTATE_CURRENTVERSION
self.sessconfig['live_aux_seeders'] = sessdefaults[
'live_aux_seeders']
if not 'nat_detect' in self.sessconfig:
self.sessconfig['nat_detect'] = sessdefaults['nat_detect']
if not 'puncturing_internal_port' in self.sessconfig:
self.sessconfig['puncturing_internal_port'] = sessdefaults[
'puncturing_internal_port']
if not 'stun_servers' in self.sessconfig:
self.sessconfig['stun_servers'] = sessdefaults['stun_servers']
if not 'pingback_servers' in self.sessconfig:
self.sessconfig['pingback_servers'] = sessdefaults[
'pingback_servers']
if not 'mainline_dht' in self.sessconfig:
self.sessconfig['mainline_dht'] = sessdefaults['mainline_dht']
# Checkpoint startup config
self.save_pstate_sessconfig()
# Create handler for calling back the user via separate threads
self.uch = UserCallbackHandler(self)
# Create engine with network thread
self.lm = TriblerLaunchMany()
self.lm.register(self, self.sesslock)
self.lm.start()
