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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
use atproto_identity::key::{KeyData, KeyType, generate_key, identify_key};
use rusqlite::{OptionalExtension, params};
use serde::{Deserialize, Serialize};
use std::path::Path;
use std::sync::{Arc, Mutex, MutexGuard};
pub const N_CLIENT: &str = "";
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct Session {
pub did: String,
pub client: String,
pub access_token: String,
pub refresh_token: String,
pub dpop_key: String,
pub pds: String,
pub issuer: String,
pub scope: String,
pub expires_at: i64,
}
#[derive(Clone)]
pub struct Store(pub Arc<Mutex<rusqlite::Connection>>);
const SCHEMA: &str = "
CREATE TABLE IF NOT EXISTS client_keys (client_id TEXT PRIMARY KEY, key TEXT NOT NULL);
CREATE TABLE IF NOT EXISTS requests (state TEXT PRIMARY KEY, request TEXT NOT NULL, created_at INTEGER NOT NULL);
CREATE TABLE IF NOT EXISTS sessions (did TEXT NOT NULL, client TEXT NOT NULL, session TEXT NOT NULL, PRIMARY KEY (did, client));
CREATE TABLE IF NOT EXISTS key_index (did_key TEXT PRIMARY KEY, uri TEXT NOT NULL);
CREATE TABLE IF NOT EXISTS jtis (jti TEXT PRIMARY KEY, exp INTEGER NOT NULL);
";
impl Store {
pub fn open(path: &Path) -> anyhow::Result<Self> {
let conn = rusqlite::Connection::open(path)?;
conn.busy_timeout(std::time::Duration::from_secs(5))?;
conn.execute_batch(SCHEMA)?;
Ok(Store(Arc::new(Mutex::new(conn))))
}
fn conn(&self) -> MutexGuard<'_, rusqlite::Connection> {
self.0
.lock()
.unwrap_or_else(|poisoned| poisoned.into_inner())
}
pub fn client_key(&self, client: &str) -> anyhow::Result<KeyData> {
let conn = self.conn();
let existing: Option<String> = conn
.query_row(
"SELECT key FROM client_keys WHERE client_id = ?1",
[client],
|row| row.get(0),
)
.optional()?;
if let Some(key) = existing {
return Ok(identify_key(&key)?);
}
let key = generate_key(KeyType::P256Private)?;
conn.execute(
"INSERT INTO client_keys (client_id, key) VALUES (?1, ?2)",
params![client, key.to_string()],
)?;
Ok(key)
}
pub fn put_request(&self, state: &str, request: &str) -> anyhow::Result<()> {
self.conn().execute(
"INSERT OR REPLACE INTO requests (state, request, created_at) VALUES (?1, ?2, ?3)",
params![state, request, chrono::Utc::now().timestamp()],
)?;
Ok(())
}
pub fn take_request(&self, state: &str) -> anyhow::Result<Option<String>> {
Ok(self
.conn()
.query_row(
"DELETE FROM requests WHERE state = ?1 RETURNING request",
[state],
|row| row.get(0),
)
.optional()?)
}
pub fn put_session(&self, session: &Session) -> anyhow::Result<()> {
self.conn().execute(
"INSERT INTO sessions (did, client, session) VALUES (?1, ?2, ?3)
ON CONFLICT (did, client) DO UPDATE SET session = excluded.session",
params![session.did, session.client, serde_json::to_string(session)?],
)?;
Ok(())
}
pub fn session(&self, did: &str, client: &str) -> anyhow::Result<Option<Session>> {
let data: Option<String> = self
.conn()
.query_row(
"SELECT session FROM sessions WHERE did = ?1 AND client = ?2",
[did, client],
|row| row.get(0),
)
.optional()?;
Ok(data.map(|data| serde_json::from_str(&data)).transpose()?)
}
pub fn index_key(&self, did_key: &str, uri: &str) -> anyhow::Result<()> {
self.conn().execute(
"INSERT OR REPLACE INTO key_index (did_key, uri) VALUES (?1, ?2)",
[did_key, uri],
)?;
Ok(())
}
pub fn key_uri(&self, did_key: &str) -> anyhow::Result<Option<String>> {
Ok(self
.conn()
.query_row(
"SELECT uri FROM key_index WHERE did_key = ?1",
[did_key],
|row| row.get(0),
)
.optional()?)
}
pub fn remove_key(&self, did_key: &str) -> anyhow::Result<()> {
self.conn()
.execute("DELETE FROM key_index WHERE did_key = ?1", [did_key])?;
Ok(())
}
pub fn seen_jti(&self, jti: &str, exp: i64) -> anyhow::Result<bool> {
let conn = self.conn();
conn.execute(
"DELETE FROM jtis WHERE exp < ?1",
[chrono::Utc::now().timestamp()],
)?;
let inserted = conn.execute(
"INSERT OR IGNORE INTO jtis (jti, exp) VALUES (?1, ?2)",
params![jti, exp],
)?;
Ok(inserted == 0)
}
}
#[cfg(test)]
mod tests {
use super::*;
fn store() -> Store {
Store::open(Path::new(":memory:")).unwrap()
}
fn session(did: &str, client: &str, token: &str) -> Session {
Session {
did: did.into(),
client: client.into(),
access_token: token.into(),
refresh_token: "r".into(),
dpop_key: "k".into(),
pds: "https://pds.zkwid.test".into(),
issuer: "https://pds.zkwid.test".into(),
scope: "atproto".into(),
expires_at: 1,
}
}
#[test]
fn client_key_is_stable_per_client() {
let store = store();
let a = store.client_key("https://zkwid.test/a").unwrap();
assert_eq!(a.key_type(), &KeyType::P256Private);
assert_eq!(
store
.client_key("https://zkwid.test/a")
.unwrap()
.to_string(),
a.to_string()
);
assert_ne!(
store
.client_key("https://zkwid.test/b")
.unwrap()
.to_string(),
a.to_string()
);
}
#[test]
fn take_request_is_single_use() {
let store = store();
store.put_request("s", "{\"a\":1}").unwrap();
assert_eq!(
store.take_request("s").unwrap().as_deref(),
Some("{\"a\":1}")
);
assert_eq!(store.take_request("s").unwrap(), None);
assert_eq!(store.take_request("other").unwrap(), None);
}
#[test]
fn sessions_upsert_by_did_and_client() {
let store = store();
assert_eq!(store.session("did:plc:u", N_CLIENT).unwrap(), None);
store
.put_session(&session("did:plc:u", N_CLIENT, "a"))
.unwrap();
store
.put_session(&session("did:plc:u", "demo", "b"))
.unwrap();
store
.put_session(&session("did:plc:u", N_CLIENT, "c"))
.unwrap();
assert_eq!(
store.session("did:plc:u", N_CLIENT).unwrap(),
Some(session("did:plc:u", N_CLIENT, "c"))
);
assert_eq!(
store.session("did:plc:u", "demo").unwrap(),
Some(session("did:plc:u", "demo", "b"))
);
assert_eq!(store.session("did:plc:v", "demo").unwrap(), None);
}
#[test]
fn key_index_round_trip() {
let store = store();
assert_eq!(store.key_uri("did:key:z1").unwrap(), None);
store
.index_key("did:key:z1", "at://did:plc:u/at.zkwid.key/a")
.unwrap();
assert_eq!(
store.key_uri("did:key:z1").unwrap().as_deref(),
Some("at://did:plc:u/at.zkwid.key/a")
);
store.remove_key("did:key:z1").unwrap();
assert_eq!(store.key_uri("did:key:z1").unwrap(), None);
}
#[test]
fn seen_jti_detects_replay_and_prunes() {
let store = store();
let now = chrono::Utc::now().timestamp();
assert!(!store.seen_jti("a", now + 60).unwrap());
assert!(store.seen_jti("a", now + 60).unwrap());
assert!(!store.seen_jti("old", now - 10).unwrap());
assert!(!store.seen_jti("old", now + 60).unwrap());
assert!(store.seen_jti("old", now + 60).unwrap());
}
#[test]
fn persists_across_reopen() {
let dir = std::env::temp_dir().join(format!("zkwid-n-store-{}", std::process::id()));
std::fs::create_dir_all(&dir).unwrap();
let path = dir.join("n.db");
let key = Store::open(&path)
.unwrap()
.client_key("c")
.unwrap()
.to_string();
assert_eq!(
Store::open(&path)
.unwrap()
.client_key("c")
.unwrap()
.to_string(),
key
);
std::fs::remove_dir_all(&dir).unwrap();
}
}
