From f5ab4b0f18d0178faf49833014d9e4be0c0b20ee Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@electrum.org>
Date: Sun, 27 Aug 2023 20:56:49 +0200
Subject: [PATCH] swapserver: sanity check amount in new flow

---
 electrum/submarine_swaps.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/electrum/submarine_swaps.py b/electrum/submarine_swaps.py
index d3d1345f5..af3d8901f 100644
--- a/electrum/submarine_swaps.py
+++ b/electrum/submarine_swaps.py
@@ -513,10 +513,11 @@ class SwapManager(Logger):
         key = invoice.rhash
         payment_hash = bytes.fromhex(key)
         assert key in self.swaps
+        swap = self.swaps[key]
+        assert swap.lightning_amount == int(invoice.get_amount_sat())
         self.wallet.save_invoice(invoice)
         if pay_now:
             # check that we have the preimage
-            swap = self.get_swap(payment_hash)
             assert sha256(swap.preimage) == payment_hash
             assert swap.spending_txid is None
             self.invoices_to_pay[key] = 0