46
@named_operation('use')
50
@write_operation('use')
47
51
def start(self, req, cwd=''):
48
52
working_dir = os.path.join("/home", req.user.login, cwd)
53
55
jail_path = os.path.join(req.config['paths']['jails']['mounts'],
55
cons = ivle.console.Console(req.config, uid, jail_path, working_dir)
57
cons = ivle.console.Console(req.config, req.user, jail_path,
57
60
# Assemble the key and return it. Yes, it is double-encoded.
58
return {'key': cjson.encode({"host": cons.host,
60
"magic": cons.magic}).encode('hex')}
61
return {'key': json.dumps({"host": cons.host,
63
"magic": cons.magic}).encode('hex')}
62
@named_operation('use')
65
@write_operation('use')
63
66
def chat(self, req, key, text='', cwd='', kind="chat"):
64
67
# The request *should* have the following four fields:
65
68
# key: Hex JSON dict of host and port where the console server lives,
82
85
working_dir = os.path.join("/home", req.user.login, cwd)
85
87
# XXX: JSONRESTView should do this for us.
86
88
text = text.decode('utf-8')
88
90
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
94
response = cjson.decode(json_response)
95
except cjson.DecodeError:
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):
96
97
# Could not decode the reply from the python-console server
97
98
response = {"terminate":
98
"Communication to console process lost"}
99
100
if "terminate" in response:
100
response = restart_console(req.config, uid, jail_path,
101
response = restart_console(req.config, req.user, jail_path,
101
102
working_dir, response["terminate"])
102
103
except socket.error, (enumber, estring):
103
104
if enumber == errno.ECONNREFUSED:
104
105
# Timeout: Restart the session
105
response = restart_console(req.config, uid, jail_path,
106
response = restart_console(req.config, req.user, jail_path,
107
"The IVLE console has timed out due to inactivity")
108
"Timed out due to inactivity")
108
109
elif enumber == errno.ECONNRESET:
109
110
# Communication issue: Restart the session
110
response = restart_console(req.config, uid, jail_path,
111
response = restart_console(req.config, req.user, jail_path,
112
"Connection with the console has been reset")
114
115
# Some other error - probably serious
115
116
raise socket.error, (enumber, estring)
119
def restart_console(config, uid, jail_path, working_dir, reason):
120
def restart_console(config, user, jail_path, working_dir, reason):
120
121
"""Tells the client that it must be issued a new console since the old
121
122
console is no longer availible. The client must accept the new key.
122
123
Returns the JSON response to be given to the client.
124
125
# Start a new console server console
125
cons = ivle.console.Console(config, uid, jail_path, working_dir)
126
cons = ivle.console.Console(config, user, jail_path, working_dir)
127
128
# Make a JSON object to tell the browser to restart its console client
128
new_key = cjson.encode(
129
new_key = json.dumps(
129
130
{"host": cons.host, "port": cons.port, "magic": cons.magic})
131
132
return {"restart": reason, "key": new_key.encode("hex")}