diff options
Diffstat (limited to 'server/piztor_server.py')
| -rw-r--r-- | server/piztor_server.py | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/server/piztor_server.py b/server/piztor_server.py deleted file mode 100644 index 514f95f..0000000 --- a/server/piztor_server.py +++ /dev/null @@ -1,234 +0,0 @@ -import sqlalchemy -import SocketServer, socket, select -import struct -import os - -from sqlalchemy import create_engine -from sqlalchemy import Column, Integer, String, Float -from sqlalchemy.ext.declarative import declarative_base -from sqlalchemy.orm import sessionmaker -from random import randint - -engine = create_engine('sqlite:///t.sqlite', echo = False) -Base = declarative_base() -Session = sessionmaker(bind=engine) - -def get_hex(data): - return "".join([hex(ord(c))[2:].zfill(2) for c in data]) - -class PiztorError(Exception): - def __init__(self, msg): - self.err_msg = msg - def __str__(self, msg): - return self.err_msg - -class ConnectionError(PiztorError): - pass - -class ReqReadError(ConnectionError): - def __init__(self): - super(ReqReadError, self).__init__("Error while reading request") - -class ReqInvalidError(ConnectionError): - def __init__(self): - super(ReqInvalidError, self).__init__("Invalid request") - -class TokenInvalidError(ConnectionError): - def __init__(self): - super(TokenInvalidError, self).__init__("Invalid token") - -class DataManager(object): - def __init__(self, piz_srv): - self.piz_srv = piz_srv - -class UserManager(DataManager): - - class User(Base): - __tablename__ = 'users' - id = Column(Integer, primary_key = True) - gid = Column(Integer) - username = Column(String) - password = Column(String) - token = Column(Integer) - - def get_user_by_token(self, token): - session = Session() - User = UserManager.User - entries = session.query(User).filter(User.token == token).all() - if len(entries) == 0: - raise TokenInvalidError() - return entries[0] - - def authentication_handle(self, opt_type, data): - print "Parsing User Data" - pos = -1 - for i in xrange(0, len(data)): - if data[i] == '\0': - print i - if pos != -1: - raise ReqInvalidError() - pos = i - break - if pos == -1: - raise ReqInvalidError() - username = data[0:pos] - password = data[pos + 1:] - - print "Trying to login with following info:" - print (username, password) - - session = Session() - entries = session.query(UserManager.User). \ - filter(UserManager.User.username == username).all() - if len(entries) == 0: - return struct.pack("!BLB", 0, 0, 1) - entry = entries[0] - if entry.password != password: # Auth failed - print "Login failed!" - return struct.pack("!BLB", 0, 0, 1) - else: # Succeeded - print "Logged in sucessfully!" - entry.token = randint(0, 2147483647) - session.commit() - return struct.pack("!BLB", 0, entry.token, 0) - - -class MesgManager(DataManager): - def mesg_sending_handle(self, opt_type, data): - print "Parsing Mesg Data" - try: - if len(data) < 8: - raise ReqInvalidError() - sender_token, recv_id = struct.unpack("!LL", data[:8]) - msg = data[8:] - print (sender_token, recv_id, msg) - return struct.pack("!B", 1) - except struct.error: - raise ReqInvalidError() - -class LocationManager(DataManager): - - class LocationInfo(Base): - __tablename__ = "location_info" - uid = Column(Integer, primary_key = True) - lat = Column(Float(precesion = 64)) - lng = Column(Float(precesion = 64)) - # More: last_update - - def location_update_handle(self, opt_type, data): - print "Parsing a Location Update" - try: - if len(data) < 8: - raise ReqInvalidError() - sender_token, lat, lng = struct.unpack("!Ldd", data) - print "Updating location data with following info:" - print (sender_token, lat, lng) - - user = self.piz_srv. \ - user_mgr.get_user_by_token(sender_token) - session = Session() - LInfo = LocationManager.LocationInfo - q = session.query(LInfo).filter(LInfo.uid == user.id) - entry = q.first() - entry.lat = lat - entry.lng = lng - session.commit() - print "Location update succeeded!" - return struct.pack("!BB", 2, 0) - except TokenInvalidError: - print "Location update failed!" - return struct.pack("!BB", 2, 1) - except struct.error: - raise ReqInvalidError() - - def location_request_handle(self, opt_type, data): - print "Parsing a Location Request" - try: - if len(data) != 8: - raise ReqInvalidError() - sender_token, gid = struct.unpack("!LL", data) - print "Requesting location data with following info:" - print (sender_token, gid) - session = Session() - UInfo = UserManager.User - LInfo = LocationManager.LocationInfo - user_list = session.query(UInfo).filter(UInfo.gid == gid).all() - reply = struct.pack("!BL", 3, len(user_list)) - for user in user_list: - loc = session.query(LInfo).filter(LInfo.uid == user.id).first() - reply += struct.pack("!Ldd", user.id, loc.lat, loc.lng) - print get_hex(reply) - return reply - except struct.error: - raise ReqInvalidError() - -class PiztorServer(): - - - class GenericHandler(SocketServer.StreamRequestHandler): - - def handle(self): - print self.piz_srv - sock = self.request - sock.settimeout(100) -# sock.setblocking(0) - data = "" - try: - while True: -# ready = select.select([sock], [], [], 10) -# if not ready[0]: -# raise ReqReadError() - buff = sock.recv(4096) - if len(buff) == 0: - break # terminated - else: - data += buff - sock.shutdown(socket.SHUT_RD) - - print "Got the data:" + get_hex(data) - - if len(data) < 1: - print "invalid length" - raise ReqInvalidError() - opt_id = struct.unpack("!B", data[0])[0] - print opt_id - reply = self.piz_srv.mgr_map[opt_id](opt_id, data[1:]) - sock.sendall(reply) - finally: - sock.close() - - class ForkingEchoServer(SocketServer.ForkingMixIn, SocketServer.TCPServer): - pass - - def __init__(self, host, port): - PiztorServer.GenericHandler.piz_srv = self - srv = PiztorServer.ForkingEchoServer((host, port), - PiztorServer.GenericHandler) - srv.request_queue_size = 100 -# srv.timeout = 2 - self.server = srv - - self.user_mgr = UserManager(self) - self.mesg_mgr = MesgManager(self) - self.location_mgr = LocationManager(self) - - self.mgr_map = [ self.user_mgr.authentication_handle, - self.mesg_mgr.mesg_sending_handle, - self.location_mgr.location_update_handle, - self.location_mgr.location_request_handle] - - Base.metadata.create_all(engine) - - - def run(self): - try: - self.server.serve_forever() - except KeyboardInterrupt: - print "Exiting..." - self.server.shutdown() - print "Server shutdown" - -if __name__ == "__main__": - - ps = PiztorServer("localhost", 9990) - ps.run() |