50
@write_operation('use')
46
@named_operation('use')
51
47
def start(self, req, cwd=''):
52
48
working_dir = os.path.join("/home", req.user.login, cwd)
55
53
jail_path = os.path.join(req.config['paths']['jails']['mounts'],
57
cons = ivle.console.Console(req.config, req.user, jail_path,
55
cons = ivle.console.Console(req.config, uid, jail_path, working_dir)
60
57
# Assemble the key and return it. Yes, it is double-encoded.
61
return {'key': json.dumps({"host": cons.host,
63
"magic": cons.magic}).encode('hex')}
58
return {'key': cjson.encode({"host": cons.host,
60
"magic": cons.magic}).encode('hex')}
65
@write_operation('use')
62
@named_operation('use')
66
63
def chat(self, req, key, text='', cwd='', kind="chat"):
67
64
# The request *should* have the following four fields:
68
65
# key: Hex JSON dict of host and port where the console server lives,
93
91
json_response = ivle.chat.chat(host, port, msg, magic,decode=False)
94
92
# Snoop the response from python-console to check that it's valid
95
response = json.loads(json_response)
96
except (ValueError, ivle.chat.ProtocolError):
93
response = cjson.decode(json_response)
94
except (cjson.DecodeError, ivle.chat.ProtocolError):
97
95
# Could not decode the reply from the python-console server
98
96
response = {"terminate":
97
"Communication to console process lost"}
100
98
if "terminate" in response:
101
response = restart_console(req.config, req.user, jail_path,
99
response = restart_console(req.config, uid, jail_path,
102
100
working_dir, response["terminate"])
103
101
except socket.error, (enumber, estring):
104
102
if enumber == errno.ECONNREFUSED:
105
103
# Timeout: Restart the session
106
response = restart_console(req.config, req.user, jail_path,
104
response = restart_console(req.config, uid, jail_path,
108
"Timed out due to inactivity")
106
"The IVLE console has timed out due to inactivity")
109
107
elif enumber == errno.ECONNRESET:
110
108
# Communication issue: Restart the session
111
response = restart_console(req.config, req.user, jail_path,
109
response = restart_console(req.config, uid, jail_path,
111
"Connection with the console has been reset")
115
113
# Some other error - probably serious
116
114
raise socket.error, (enumber, estring)
120
def restart_console(config, user, jail_path, working_dir, reason):
118
def restart_console(config, uid, jail_path, working_dir, reason):
121
119
"""Tells the client that it must be issued a new console since the old
122
120
console is no longer availible. The client must accept the new key.
123
121
Returns the JSON response to be given to the client.
125
123
# Start a new console server console
126
cons = ivle.console.Console(config, user, jail_path, working_dir)
124
cons = ivle.console.Console(config, uid, jail_path, working_dir)
128
126
# Make a JSON object to tell the browser to restart its console client
129
new_key = json.dumps(
127
new_key = cjson.encode(
130
128
{"host": cons.host, "port": cons.port, "magic": cons.magic})
132
130
return {"restart": reason, "key": new_key.encode("hex")}