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,
85
82
working_dir = os.path.join("/home", req.user.login, cwd)
87
85
# XXX: JSONRESTView should do this for us.
88
86
text = text.decode('utf-8')
90
88
msg = {'cmd':kind, 'text':text}
90
json_response = ivle.chat.chat(host, port, msg, magic,decode=False)
92
# Snoop the response from python-console to check that it's valid
93
json_response = ivle.chat.chat(host, port, msg, magic,decode=False)
94
# Snoop the response from python-console to check that it's valid
95
response = json.loads(json_response)
96
except (ValueError, ivle.chat.ProtocolError):
94
response = cjson.decode(json_response)
95
except cjson.DecodeError:
97
96
# Could not decode the reply from the python-console server
98
97
response = {"terminate":
98
"Communication to console process lost"}
100
99
if "terminate" in response:
101
response = restart_console(req.config, req.user, jail_path,
100
response = restart_console(req.config, uid, jail_path,
102
101
working_dir, response["terminate"])
103
102
except socket.error, (enumber, estring):
104
103
if enumber == errno.ECONNREFUSED:
105
104
# Timeout: Restart the session
106
response = restart_console(req.config, req.user, jail_path,
105
response = restart_console(req.config, uid, jail_path,
108
"Timed out due to inactivity")
107
"The IVLE console has timed out due to inactivity")
109
108
elif enumber == errno.ECONNRESET:
110
109
# Communication issue: Restart the session
111
response = restart_console(req.config, req.user, jail_path,
110
response = restart_console(req.config, uid, jail_path,
112
"Connection with the console has been reset")
115
114
# Some other error - probably serious
116
115
raise socket.error, (enumber, estring)
120
def restart_console(config, user, jail_path, working_dir, reason):
119
def restart_console(config, uid, jail_path, working_dir, reason):
121
120
"""Tells the client that it must be issued a new console since the old
122
121
console is no longer availible. The client must accept the new key.
123
122
Returns the JSON response to be given to the client.
125
124
# Start a new console server console
126
cons = ivle.console.Console(config, user, jail_path, working_dir)
125
cons = ivle.console.Console(config, uid, jail_path, working_dir)
128
127
# Make a JSON object to tell the browser to restart its console client
129
new_key = json.dumps(
128
new_key = cjson.encode(
130
129
{"host": cons.host, "port": cons.port, "magic": cons.magic})
132
131
return {"restart": reason, "key": new_key.encode("hex")}