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import pwd
import os
from Service import Service
from sugar import env
PRESENCE_SERVICE_TYPE = "_olpc_presence._tcp"
PRESENCE_SERVICE_PORT = 6000
__buddy_service_types = [PRESENCE_SERVICE_TYPE]
def recognize_buddy_service_type(stype):
if stype not in __buddy_service_types:
__buddy_service_types.append(stype)
def get_recognized_buddy_service_types():
return __buddy_service_types[:]
class Buddy(object):
def __init__(self, service):
self._services = {}
self._services[service.get_type()] = service
self._nick_name = service.get_name()
self._address = service.get_address()
self._icon = None
def get_icon(self):
"""Return the buddies icon, if any."""
return self._icon
def get_address(self):
return self._address
def add_service(self, service):
if service.get_name() != self._nick_name:
return False
if service.get_address() != self._address:
return False
if self._services.has_key(service.get_type()):
return False
self._services[service.get_type()] = service
def remove_service(self, stype):
if self._services.has_key(stype):
del self._services[stype]
def get_service(self, stype):
if self._services.has_key(stype):
return self._services[stype]
return None
def get_nick_name(self):
return self._nick_name
def set_icon(self, icon):
"""Can only set icon for other buddies. The Owner
takes care of setting it's own icon."""
self._icon = icon
class Owner(Buddy):
"""Class representing the owner of this machine/instance."""
def __init__(self, group):
self._group = group
nick = pwd.getpwuid(os.getuid())[0]
if not nick or not len(nick):
nick = "n00b"
self._presence_service = Service(nick, PRESENCE_SERVICE_TYPE, PRESENCE_SERVICE_PORT)
Buddy.__init__(self, self._presence_service)
user_dir = env.get_user_dir()
if not os.path.exists(user_dir):
try:
os.makedirs(user_dir)
except OSError:
pass
for fname in os.listdir(user_dir):
if not fname.startswith("buddy-icon."):
continue
fd = open(os.path.join(user_dir, fname), "r")
self._icon = fd.read()
fd.close()
break
def set_icon(self, icon):
"""Can only set icon in constructor for now."""
pass
def register(self):
self._presence_service.register(self._group)
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