| 1 | package main |
| 2 | |
| 3 | // 🤖 The offline restore drill, as a test (docs/locked-vaults.md "Offline |
| 4 | // restore — the hard gate"): seed a REAL instance DB through db.go — a member |
| 5 | // with a public key, a personal Vault app-thread with a wrapped thread key, |
| 6 | // and a locked vault's event log, all sealed with the real e2ee crypto — then |
| 7 | // read the whole thing back through internal/vault's offline reader with the |
| 8 | // server code out of the loop, exactly what `eleven vault get -db` does when |
| 9 | // every server is dead. If this passes, the recovery path is crypto-complete: |
| 10 | // S3 replica + ~/.eleven key + keychain KEK = secrets. |
| 11 | |
| 12 | import ( |
| 13 | "path/filepath" |
| 14 | "testing" |
| 15 | "time" |
| 16 | |
| 17 | "lchat/internal/e2ee" |
| 18 | "lchat/internal/vault" |
| 19 | ) |
| 20 | |
| 21 | func TestVaultOfflineRestore(t *testing.T) { |
| 22 | dbPath := filepath.Join(t.TempDir(), "lchat.db") |
| 23 | db, err := openDB(dbPath) |
| 24 | if err != nil { |
| 25 | t.Fatalf("openDB: %v", err) |
| 26 | } |
| 27 | |
| 28 | // A member, exactly as join would leave them: keypair client-side, public |
| 29 | // half in the roster. |
| 30 | member, err := e2ee.GenerateUserKeypair() |
| 31 | if err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | if _, err := db.sql.Exec("INSERT INTO users (id, label, created_at, public_key) VALUES ('u1','',?,?)", |
| 35 | time.Now().Unix(), member.PublicKey); err != nil { |
| 36 | t.Fatalf("seed user: %v", err) |
| 37 | } |
| 38 | |
| 39 | // Their personal Vault app-thread: the app id lives INSIDE the encrypted |
| 40 | // name_blob (the server never learns which self-thread is a vault), and the |
| 41 | // thread key reaches the member only as an ECIES wrap to their public key. |
| 42 | rawKey, err := e2ee.GenerateKey() |
| 43 | if err != nil { |
| 44 | t.Fatal(err) |
| 45 | } |
| 46 | keyB64 := e2ee.B64uEncode(rawKey) |
| 47 | wrapped, err := e2ee.WrapThreadKey(keyB64, member.PublicKey) |
| 48 | if err != nil { |
| 49 | t.Fatal(err) |
| 50 | } |
| 51 | nameBlob, err := e2ee.EncryptJSON(rawKey, map[string]string{"app": "vault", "title": "Vault"}) |
| 52 | if err != nil { |
| 53 | t.Fatal(err) |
| 54 | } |
| 55 | now := time.Now().Unix() |
| 56 | if _, err := db.sql.Exec("INSERT INTO threads (id, kind, name_blob, created_at) VALUES ('t1','self',?,?)", nameBlob, now); err != nil { |
| 57 | t.Fatal(err) |
| 58 | } |
| 59 | if _, err := db.sql.Exec("INSERT INTO thread_members (thread_id, user_id, created_at) VALUES ('t1','u1',?)", now); err != nil { |
| 60 | t.Fatal(err) |
| 61 | } |
| 62 | if _, err := db.sql.Exec("INSERT INTO thread_keys (thread_id, user_id, wrapped) VALUES ('t1','u1',?)", wrapped); err != nil { |
| 63 | t.Fatal(err) |
| 64 | } |
| 65 | |
| 66 | // The vault's life so far: a plaintext add, then a lock (re-sealing that |
| 67 | // value and wrapping the vault key under a keychain-style KEK), then a |
| 68 | // sealed add — the operator-vault shape. |
| 69 | vaultKP, err := e2ee.GenerateUserKeypair() |
| 70 | if err != nil { |
| 71 | t.Fatal(err) |
| 72 | } |
| 73 | kek, err := e2ee.GenerateKey() // stands in for the Touch ID-guarded keychain KEK |
| 74 | if err != nil { |
| 75 | t.Fatal(err) |
| 76 | } |
| 77 | privRaw, err := e2ee.B64uDecode(vaultKP.PrivateKey) |
| 78 | if err != nil { |
| 79 | t.Fatal(err) |
| 80 | } |
| 81 | wrapBytes, err := e2ee.EncryptBytes(kek, privRaw) |
| 82 | if err != nil { |
| 83 | t.Fatal(err) |
| 84 | } |
| 85 | sealedWiFi, err := e2ee.SealForPub(vaultKP.PublicKey, map[string]string{"v": "hunter2"}) |
| 86 | if err != nil { |
| 87 | t.Fatal(err) |
| 88 | } |
| 89 | sealedEnv, err := e2ee.SealForPub(vaultKP.PublicKey, map[string]string{"v": "LCHAT_ADMIN_TOKEN=abc\nADDR=:443\n"}) |
| 90 | if err != nil { |
| 91 | t.Fatal(err) |
| 92 | } |
| 93 | events := []map[string]any{ |
| 94 | {"type": "vault.add", "id": "s1", "aid": "a1", "label": "WiFi", "value": "hunter2", "uid": "u1", "name": "Paul", "ts": 1000}, |
| 95 | {"type": "vault.lock", "aid": "a2", "pub": vaultKP.PublicKey, |
| 96 | "wrap": map[string]any{"id": "w1", "kind": "keychain", "label": "Paul — CLI", "wrapped": e2ee.B64uEncode(wrapBytes)}, |
| 97 | "sealed": map[string]any{"s1": sealedWiFi}, "uid": "u1", "name": "Paul", "ts": 2000}, |
| 98 | {"type": "vault.add", "id": "s2", "aid": "a3", "label": "router.env", "sealed": sealedEnv, "uid": "u1", "name": "Paul", "ts": 3000}, |
| 99 | } |
| 100 | for _, e := range events { |
| 101 | blob, err := e2ee.EncryptJSON(rawKey, e) |
| 102 | if err != nil { |
| 103 | t.Fatal(err) |
| 104 | } |
| 105 | if _, err := db.insertMessage("t1", blob, "author"); err != nil { |
| 106 | t.Fatal(err) |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | // ---- the drill: server code out of the loop from here ------------------- |
| 111 | |
| 112 | o, err := vault.OpenOffline(dbPath) |
| 113 | if err != nil { |
| 114 | t.Fatalf("OpenOffline: %v", err) |
| 115 | } |
| 116 | defer o.Close() |
| 117 | |
| 118 | uid, err := o.UserID(member.PublicKey) |
| 119 | if err != nil || uid != "u1" { |
| 120 | t.Fatalf("UserID = %q, %v — want u1", uid, err) |
| 121 | } |
| 122 | if id, err := o.UserID("someone-elses-key"); err != nil || id != "" { |
| 123 | t.Fatalf("a foreign key must not match a member (got %q, %v)", id, err) |
| 124 | } |
| 125 | |
| 126 | threads, err := o.Threads(uid, member.PrivateKey) |
| 127 | if err != nil { |
| 128 | t.Fatalf("Threads: %v", err) |
| 129 | } |
| 130 | var vt *vault.OfflineThread |
| 131 | for i := range threads { |
| 132 | if threads[i].App == "vault" && threads[i].Kind == "self" { |
| 133 | vt = &threads[i] |
| 134 | } |
| 135 | } |
| 136 | if vt == nil { |
| 137 | t.Fatalf("no vault app-thread found offline; threads: %+v", threads) |
| 138 | } |
| 139 | |
| 140 | s, err := o.FoldVault(vt.ID, vt.Key) |
| 141 | if err != nil { |
| 142 | t.Fatalf("FoldVault: %v", err) |
| 143 | } |
| 144 | if s.Keyring == nil || s.Keyring.Pub != vaultKP.PublicKey { |
| 145 | t.Fatalf("keyring didn't fold: %+v", s.Keyring) |
| 146 | } |
| 147 | if len(s.Items) != 2 { |
| 148 | t.Fatalf("want 2 items, got %d", len(s.Items)) |
| 149 | } |
| 150 | wifi := s.FindItem("wifi") |
| 151 | if wifi == nil || wifi.Sealed == "" || wifi.Value != "" { |
| 152 | t.Fatalf("the lock event should have sealed WiFi: %+v", wifi) |
| 153 | } |
| 154 | |
| 155 | // The get path: keychain KEK → vault private key → unseal both values. |
| 156 | wrapRaw, err := e2ee.B64uDecode(s.Keyring.Wraps[0].Wrapped) |
| 157 | if err != nil { |
| 158 | t.Fatal(err) |
| 159 | } |
| 160 | privOut, err := e2ee.DecryptBytes(kek, wrapRaw) |
| 161 | if err != nil { |
| 162 | t.Fatalf("KEK didn't open the wrap: %v", err) |
| 163 | } |
| 164 | privB64 := e2ee.B64uEncode(privOut) |
| 165 | var got struct { |
| 166 | V string `json:"v"` |
| 167 | } |
| 168 | if err := e2ee.OpenSealed(wifi.Sealed, privB64, &got); err != nil || got.V != "hunter2" { |
| 169 | t.Fatalf("unseal WiFi = %q, %v", got.V, err) |
| 170 | } |
| 171 | env := s.FindItem("router.env") |
| 172 | if env == nil { |
| 173 | t.Fatal("router.env missing offline") |
| 174 | } |
| 175 | if err := e2ee.OpenSealed(env.Sealed, privB64, &got); err != nil || got.V != "LCHAT_ADMIN_TOKEN=abc\nADDR=:443\n" { |
| 176 | t.Fatalf("unseal router.env = %q, %v", got.V, err) |
| 177 | } |
| 178 | |
| 179 | // And the failure mode that matters: a WRONG kek opens nothing. |
| 180 | badKek, _ := e2ee.GenerateKey() |
| 181 | if _, err := e2ee.DecryptBytes(badKek, wrapRaw); err == nil { |
| 182 | t.Fatal("a wrong KEK must never open the vault key wrap") |
| 183 | } |
| 184 | } |
| 185 | |
amadan