def request(self, c_socket):
num_left = 0
try:
my_leave_request = input(
"What room(s) do you wish to leave? comma separated list for multiple joins: "
)
if not my_leave_request:
raise ValueError
adjust_leave = my_leave_request.lower()
leave_list = adjust_leave.split(",")
except ValueError as e:
error = base.Error()
error.empty_string()
error.receive()
return -1
for room in leave_list:
if room in c.MY_ROOMS.keys():
del c.MY_ROOMS[room]
self.data = room.rstrip()
to_send = self.prepare_msg_out('LeaveMessage')
c_socket.send(to_send)
num_left += 1
else:
error = base.Error()
error.room_missing(room)
error.receive()
return len(leave_list) - num_left
def request(self, c_socket):
num_joined = 0
try:
error = base.Error()
my_join_request = input(
"What room(s) do you wish to join? comma separated list for multiple joins: "
)
if not my_join_request:
error.empty_string()
raise ValueError
adjust_join = my_join_request.lower()
join_list = adjust_join.split(",")
except ValueError:
error.receive()
return -1
for room in join_list:
if room in c.ALL_ROOMS.keys():
if room not in c.MY_ROOMS.keys():
self.data = room.rstrip()
to_send = self.prepare_msg_out('JoinMessage')
c_socket.send(to_send)
num_joined += 1
else:
error = base.Error()
error.join_duplicate_user(c.my_username, room)
error.receive()
else:
error = base.Error()
error.room_missing(room)
error.receive()
return len(join_list) - num_joined
def request(self, c_socket):
num_sent = 0
recipients = self.choose_recipients()
if len(recipients) < 1:
return -1
try:
my_msg = input("Msg: ")
error = base.Error()
if not my_msg:
error.empty_string()
raise ValueError
if len(my_msg) > base.MSG_MAX:
error.data_exceeds_len()
raise ValueError
except ValueError:
error.receive()
return -1
self.data = my_msg
for room in recipients:
self.dest = room.rstrip()
to_send = self.prepare_msg_out('ChatMessage')
c_socket.send(to_send)
num_sent += 1
return len(recipients) - num_sent
def choose_recipients():
print(
"Enter rooms to message as comma separated list (must be joined to send)"
)
adjusted = ""
try:
my_recipients = input("Rooms to msg: ")
error = base.Error()
if not my_recipients:
error.empty_string()
raise ValueError
adjusted = my_recipients.lower()
adjusted = my_recipients.split(',')
for room in adjusted:
if room not in c.MY_ROOMS.keys():
adjusted.remove(room)
error.room_missing(room)
raise ValueError
except ValueError:
error.receive()
return adjusted
def establish_connection(ip, port):
try:
c_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
c_socket.connect((ip, port))
c_socket.setblocking(False)
except socket.error as se:
error = base.Error()
error.broken_connection(ip)
error.receive()
sys.exit(f'EXITING')
return c_socket
def request_open(self):
try:
from_user = input("Username: ")
error = base.Error()
if not from_user:
error.empty_string()
raise ValueError
elif len(from_user) > base.NAME_MAX:
error.name_exceeds_len()
raise ValueError
c.my_username = from_user.lower().rstrip()
except ValueError:
error.receive()
return None
self.sender = c.my_username.rstrip()
to_send = self.prepare_msg_out('ConnectionMessage')
return to_send
def json_msg_decoder(to_decode):
if '__type__' in to_decode and to_decode['__type__'] == 'Message':
return msg.Message(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'CreateRoomMessage':
return CreateRoomMessage(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'JoinMessage':
return JoinMessage(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'ConnectionMessage':
return ConnectionMessage(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'LeaveMessage':
return LeaveMessage(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'ChatMessage':
return ChatMessage(to_decode['timestamp'], to_decode['sender'],
to_decode['dest'], to_decode['data'])
if '__type__' in to_decode and to_decode['__type__'] == 'Error':
return base.Error(to_decode['code'], to_decode['data'])
return to_decode
def request(self, c_socket):
try:
my_room = input("New room name: ")
error = base.Error()
if not my_room:
error.empty_string()
raise ValueError
if my_room in c.ALL_ROOMS:
error.create_duplicate_room(my_room)
raise ValueError
if len(my_room) > base.NAME_MAX:
error.name_exceeds_len()
raise ValueError
except ValueError as e:
error.receive()
return False
self.data = my_room.rstrip()
msg_out = self.prepare_msg_out('CreateRoomMessage')
c_socket.send(msg_out)
return True
def main():
c_socket = ms.establish_connection(base.SERVER_IP, base.SERVER_PORT)
ms.manage_keepalive(c_socket)
attempt_connect = 0
action = True
while attempt_connect == 0:
open_msg = mm.ConnectionMessage()
attempt_connect = open_msg.request(c_socket, 'CONNECT')
# display intro text to user
ms.intro()
while True:
out = None
wait = True
while action or wait:
action = ms.receive_msg_in(action, c_socket)
if not action:
wait = False
else:
wait = True
selection = ms.process_user_choice()
if selection == '$create$':
msg = mm.CreateRoomMessage(None, c.my_username, 'SERVER', None)
status = msg.request(c_socket)
if status:
action = True
elif selection == '$join$':
msg = mm.JoinMessage(None, c.my_username, 'SERVER', None)
num_joined = msg.request(c_socket)
if num_joined != 0:
warning = base.Error()
warning.warning_join()
warning.receive()
action = True
elif selection == '$view_all$':
all_rooms = ms.list_all_rooms()
if all_rooms != len(c.ALL_ROOMS):
print('SYSTEM ERROR: printing all rooms')
action = False
elif selection == '$menu$':
ms.intro()
action = False
elif selection == '$list$':
list_mem = ms.list_room_members()
if list_mem == -1:
error = base.Error()
error.room_missing('room')
error.receive()
action = False
elif selection == '$msg$':
msg = mm.ChatMessage(None, c.my_username, None, None)
num_sent = msg.request(c_socket)
if num_sent < 0:
action = False
else:
action = True
elif selection == '$leave$':
msg = mm.LeaveMessage(None, c.my_username, 'Server', None)
num_left = msg.request(c_socket)
if num_left < 0:
action = False
else:
action = True
elif selection == '$quit$':
msg = mm.ConnectionMessage(None, c.my_username, 'Server', None)
msg.request(c_socket, 'QUIT')
sys.exit('EXITED SYSTEM')
# if there is a message to send, send it
if out is not None:
c_socket.send(out)
def receive_msg_in(status, c_socket):
try:
while True:
msg_in_header = c_socket.recv(base.header_len)
header_len = len(msg_in_header)
if not header_len:
error = base.Error()
error.broken_connection('SERVER')
error.receive()
sys.exit('EXITING')
return False
msg_in_len = int(msg_in_header.decode('utf-8').strip())
if header_len > base.MSG_MAX:
error = base.Error()
error.msg_exceeds_len()
error.receive()
return False
msg_in = c_socket.recv(msg_in_len).decode('utf-8')
new_msg_in = json.loads(msg_in, object_hook=mm.json_msg_decoder)
msg_status = new_msg_in.receive()
if isinstance(new_msg_in, mm.ConnectionMessage):
status = False
elif isinstance(new_msg_in, mm.JoinMessage):
if msg_status != 0:
print(
f'CLIENT ERROR, client server mismatch could not add {new_msg_in.sender} to {new_msg_in.data}')
status = False
elif isinstance(new_msg_in, mm.CreateRoomMessage):
if msg_status != 1:
print(f'CLIENT ERROR: client server mismatch could not add {new_msg_in.data}')
status = False
elif isinstance(new_msg_in, base.Error):
if msg_status == 3:
print(f'FATAL ERROR from Server EXITING')
sys.exit()
status = True
elif isinstance(new_msg_in, mm.ChatMessage):
if msg_status == 0:
print("CLIENT ERROR: reading in chat message failed, check with Server admin")
status = False
elif isinstance(new_msg_in, mm.LeaveMessage):
if msg_status != 1:
print(
f'CLIENT ERROR, client server mismatch could not remove {new_msg_in.sender}'
f'from {new_msg_in.data}')
status = False
else:
print(f"{new_msg_in['sender']} >> {new_msg_in['type']} {new_msg_in['data']}")
except IOError as e:
if e.errno != errno.EAGAIN and e.errno != errno.EWOULDBLOCK:
print('READ ERROR: could not read in from', str(e))
sys.exit('EXITING')
if status:
return False
else:
return True
return status
