1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
"""OAuth2 Token"""
import uuid
import datetime
from typing import NamedTuple, Optional
from pymonad.maybe import Just, Maybe, Nothing
from gn3.auth import db
from gn3.auth.authorisation.errors import NotFoundError
from gn3.auth.authorisation.users import User, user_by_id
from .oauth2client import client, OAuth2Client
class OAuth2Token(NamedTuple):
"""Implement Tokens for OAuth2."""
token_id: uuid.UUID
client: OAuth2Client
token_type: str
access_token: str
refresh_token: Optional[str]
scope: str
revoked: bool
issued_at: datetime.datetime
expires_in: int
user: User
@property
def expires_at(self) -> datetime.datetime:
"""Return the time when the token expires."""
return self.issued_at + datetime.timedelta(seconds=self.expires_in)
def check_client(self, client: OAuth2Client) -> bool:# pylint: disable=[redefined-outer-name]
"""Check whether the token is issued to given `client`."""
return client.client_id == self.client.client_id
def get_expires_in(self) -> int:
"""Return the `expires_in` value for the token."""
return self.expires_in
def get_scope(self) -> str:
"""Return the valid scope for the token."""
return self.scope
def is_expired(self) -> bool:
"""Check whether the token is expired."""
return self.expires_at < datetime.datetime.now()
def is_revoked(self):
"""Check whether the token has been revoked."""
return self.revoked
def __token_from_resultset__(conn: db.DbConnection, rset) -> Maybe:
def __identity__(val):
return val
try:
the_user = user_by_id(conn, uuid.UUID(rset["user_id"]))
except NotFoundError as _nfe:
the_user = None
the_client = client(conn, uuid.UUID(rset["client_id"]), the_user)
if the_client.is_just() and bool(the_user):
return Just(OAuth2Token(token_id=uuid.UUID(rset["token_id"]),
client=the_client.maybe(None, __identity__),
token_type=rset["token_type"],
access_token=rset["access_token"],
refresh_token=rset["refresh_token"],
scope=rset["scope"],
revoked=(rset["revoked"] == 1),
issued_at=datetime.datetime.fromtimestamp(
rset["issued_at"]),
expires_in=rset["expires_in"],
user=the_user))# type: ignore[arg-type]
return Nothing
def token_by_access_token(conn: db.DbConnection, token_str: str) -> Maybe:
"""Retrieve token by its token string"""
with db.cursor(conn) as cursor:
cursor.execute("SELECT * FROM oauth2_tokens WHERE access_token=?",
(token_str,))
res = cursor.fetchone()
if res:
return __token_from_resultset__(conn, res)
return Nothing
def token_by_refresh_token(conn: db.DbConnection, token_str: str) -> Maybe:
"""Retrieve token by its token string"""
with db.cursor(conn) as cursor:
cursor.execute(
"SELECT * FROM oauth2_tokens WHERE refresh_token=?",
(token_str,))
res = cursor.fetchone()
if res:
return __token_from_resultset__(conn, res)
return Nothing
def revoke_token(token: OAuth2Token) -> OAuth2Token:
"""
Return a new token derived from `token` with the `revoked` field set to
`True`.
"""
return OAuth2Token(
token_id=token.token_id, client=token.client,
token_type=token.token_type, access_token=token.access_token,
refresh_token=token.refresh_token, scope=token.scope, revoked=True,
issued_at=token.issued_at, expires_in=token.expires_in, user=token.user)
def save_token(conn: db.DbConnection, token: OAuth2Token) -> None:
"""Save/Update the token."""
with db.cursor(conn) as cursor:
cursor.execute(
("INSERT INTO oauth2_tokens VALUES (:token_id, :client_id, "
":token_type, :access_token, :refresh_token, :scope, :revoked, "
":issued_at, :expires_in, :user_id) "
"ON CONFLICT (token_id) DO UPDATE SET "
"refresh_token=:refresh_token, revoked=:revoked, "
"expires_in=:expires_in "
"WHERE token_id=:token_id"),
{
"token_id": str(token.token_id),
"client_id": str(token.client.client_id),
"token_type": token.token_type,
"access_token": token.access_token,
"refresh_token": token.refresh_token,
"scope": token.scope,
"revoked": 1 if token.revoked else 0,
"issued_at": int(token.issued_at.timestamp()),
"expires_in": token.expires_in,
"user_id": str(token.user.user_id)
})
|
