Aegis: a PIN clears only the transaction it was entered for

One global 90 s clearance was opened by every PIN proof. Opening the
wallet or ticking a setting let the next dapp transaction from any site
through without a PIN; a dapp waiting in its poll could take the clearance
the user had just made for their own send; and with two sites waiting the
second one's request was dropped.

Each waiting dapp transaction now has an id, and only a proof naming that
id releases it; a proof given for "transaction" in the panel clears the
panel's next send only; any other proof clears nothing. The panel answers
waiting sites one at a time. Promote to HD now asks for the PIN like any
other spend instead of failing when PIN-per-transaction is on.

bundled-addons/aegis/index.js

@@ -1282,33 +1282,43 @@ function noteMasterVerified(api) {
 // single-use fact recorded only after the host itself has verified the
 // master password the PIN unwraps (pinGateSatisfied). Panel sends consume
 // one; dapp transactions ask the open panel for one and wait.
+//
+// A clearance belongs to the thing the PIN was entered for. It used to be
+// one global window: any PIN proof (opening the wallet, a settings toggle)
+// let the next dapp transaction from any site through, a waiting dapp could
+// take the clearance the user had just made for their own send, and with
+// two sites waiting the second one's request was lost. Now:
+//   - each waiting dapp transaction has its own id, and only a proof that
+//     names that id releases it;
+//   - a proof given for "transaction" in the panel clears the panel's next
+//     send only;
+//   - any other proof clears nothing.
 const TX_CLEARANCE_MS = 90_000;
 const DAPP_PIN_WAIT_MS = 120_000;
-let txClearanceUntil = 0;
-let pendingPinRequest = null;       // { origin, what, at } while a dapp tx waits for the PIN
+let panelClearanceUntil = 0;
+const pendingPinRequests = new Map();   // id -> { id, origin, what, at, cleared }
 function txPinOwed() {
   try { return !!(ctx && ctx.pinNeeded && ctx.pinNeeded("transaction").needPin); }
   catch { return true; }             // the safe direction for a lock is closed
 }
-function takeTxClearance() {
-  if (Date.now() < txClearanceUntil) { txClearanceUntil = 0; return true; }
-  return false;
-}
 function requirePanelTxPin() {
-  if (txPinOwed() && !takeTxClearance()) throw new Error("PIN required — confirm your PIN to continue");
+  if (!txPinOwed()) return;
+  if (Date.now() < panelClearanceUntil) { panelClearanceUntil = 0; return; }
+  throw new Error("PIN required — confirm your PIN to continue");
 }
 async function requireDappTxPin(origin, what) {
-  if (!txPinOwed() || takeTxClearance()) return;
-  pendingPinRequest = { origin: String(origin || ""), what: String(what || "transaction"), at: Date.now() };
+  if (!txPinOwed()) return;
+  const req = { id: nodeCrypto.randomBytes(8).toString("hex"), origin: String(origin || ""), what: String(what || "transaction"), at: Date.now(), cleared: false };
+  pendingPinRequests.set(req.id, req);
   try {
-    try { ctx.api.emit("pinRequest", pendingPinRequest); } catch {}
+    try { ctx.api.emit("pinRequest", { id: req.id, origin: req.origin, what: req.what, at: req.at }); } catch {}
     const deadline = Date.now() + DAPP_PIN_WAIT_MS;
     while (Date.now() < deadline) {
       await new Promise((r) => setTimeout(r, 250));
       if (!ctx) break;
-      if (takeTxClearance()) return;
+      if (req.cleared) return;
     }
-  } finally { pendingPinRequest = null; }
+  } finally { pendingPinRequests.delete(req.id); }
   throw new Error("Aegis asks for your PIN on every transaction. Open the Aegis panel, confirm your PIN there, then try again.");
 }
 
@@ -2717,14 +2727,24 @@ function registerPanelMessages(api) {
     catch { throw new Error("PIN proof rejected"); }
     noteMasterVerified(api);
     api.storage.set("aegis/pin/gate", { lastOkAt: Date.now(), bootId: BOOT_ID });
-    txClearanceUntil = Date.now() + TX_CLEARANCE_MS;
+    // What this proof clears (see requireDappTxPin).
+    const forRequest = String((p && p.requestId) || "");
+    if (forRequest) {
+      const req = pendingPinRequests.get(forRequest);
+      if (!req) throw new Error("that request is no longer waiting");
+      req.cleared = true;
+    } else if (String((p && p.event) || "") === "transaction") {
+      panelClearanceUntil = Date.now() + TX_CLEARANCE_MS;
+    }
     return true;
   });
   // A panel opened while a dapp transaction is waiting for the PIN picks the
   // request up here; one already open gets the "pinRequest" event instead.
   api.onMessage("pinRequestPending", (_p, m) => {
     fromPanel(m);
-    return pendingPinRequest ? { ...pendingPinRequest } : null;
+    // The oldest waiting request that is not answered yet.
+    for (const r of pendingPinRequests.values()) if (!r.cleared) return { id: r.id, origin: r.origin, what: r.what, at: r.at };
+    return null;
   });
   ctx.pinNeeded = pinNeeded;
   // Seal a plain blob left by an older build now, not when the panel next

bundled-addons/aegis/panel.js

@@ -1196,6 +1196,9 @@ function openWalletManageModal(w) {
         + `<br><br>The imported key is kept rather than deleted: the sweep still has to confirm, and anyone holding the old address can still pay into it. Remove it yourself once its balance reads zero.`,
     });
     if (!ok) return;
+    // The sweep is a spend: with "PIN on every transaction" the host refuses
+    // it without a proof given for a transaction.
+    if (!await pinGate("transaction", "Confirm the sweep with your PIN.")) return;
     try {
       const r = await S.invoke("promoteToHd", { walletId: w.id, label: pv.suggestedLabel });
       close();
@@ -5139,19 +5142,29 @@ async function pinGate(event, subtitle) {
   // does not count, so a failure here is a failed gate.
   const proof = await verifyPinInteractively(subtitle || PIN_GATE_COPY[st.reason] || "Confirm with your PIN.");
   if (!proof) return false;
-  try { await S.invoke("pinGateSatisfied", { masterPassword: proof }); }
+  // `event` says what the proof is for: "transaction" clears the panel's
+  // next send, anything else only records the gate.
+  try { await S.invoke("pinGateSatisfied", { masterPassword: proof, event }); }
   catch { return false; }
   return true;
 }
 // A dapp transaction is waiting on the PIN ("ask on every transaction").
 // The host cannot draw a PIN pad, so it asks the panel: prove the PIN here
 // and the pending transaction goes through.
+// Requests are answered one at a time, each with its own PIN entry, and the
+// proof names the request it was entered for — so a PIN typed for one site
+// never releases another site's transaction.
+let pinRequestBusy = false;
 async function answerPinRequest(req) {
-  if (!req || pinGateBlocked) return;
+  if (!req || !req.id || pinGateBlocked || pinRequestBusy) return;
+  pinRequestBusy = true;
+  try {
     const where = String(req.origin || "A site").slice(0, 80);
     const proof = await verifyPinInteractively(`${where} is waiting — confirm the ${String(req.what || "transaction").slice(0, 60)} with your PIN.`);
-  if (!proof) return;
-  try { await S.invoke("pinGateSatisfied", { masterPassword: proof }); } catch { /* host keeps waiting, then refuses */ }
+    if (proof) { try { await S.invoke("pinGateSatisfied", { masterPassword: proof, requestId: req.id }); } catch { /* host keeps waiting, then refuses */ } }
+  } finally { pinRequestBusy = false; }
+  // Another site may be waiting too.
+  try { const next = await S.invoke("pinRequestPending"); if (next && next.id !== req.id) answerPinRequest(next); } catch {}
 }
 const PIN_GATE_COPY = {
   restart: "Theseus restarted — confirm your PIN to use this wallet.",