From 1518a0a16c7ac0fbe3b790173047b5fc28e02c37 Mon Sep 17 00:00:00 2001
From: William Casarin <jb55@jb55.com>
Date: Sat, 13 May 2023 19:51:06 -0700
Subject: [PATCH] zaps: ensure returned bolt11 is the correct amount

---
 damus/Util/Zap.swift | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/damus/Util/Zap.swift b/damus/Util/Zap.swift
index a466b3dd..b240584b 100644
--- a/damus/Util/Zap.swift
+++ b/damus/Util/Zap.swift
@@ -293,5 +293,12 @@ func fetch_zap_invoice(_ payreq: LNUrlPayRequest, zapreq: NostrEvent?, sats: Int
         return nil
     }
     
+    // make sure it's the correct amount
+    guard let bolt11 = decode_bolt11(result.pr),
+          .specific(amount) == bolt11.amount
+    else {
+        return nil
+    }
+    
     return result.pr
 }