From 44ee969e433af90100b192e75c03dcfd79dbab4e Mon Sep 17 00:00:00 2001
From: ok300 <106775972+ok300@users.noreply.github.com>
Date: Thu, 15 Aug 2024 17:47:19 +0000
Subject: [PATCH] Receive payment: remove MRH BIP21 amount validation (#448)

* Receive payment: remove MRH BIP21 amount validation

* Fix CI: bump dependency in pubspec.lock
---
 lib/core/src/sdk.rs                   | 11 +----------
 packages/flutter/example/pubspec.lock |  4 ++--
 2 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/lib/core/src/sdk.rs b/lib/core/src/sdk.rs
index 91bd0e1..909e0b8 100644
--- a/lib/core/src/sdk.rs
+++ b/lib/core/src/sdk.rs
@@ -1227,23 +1227,14 @@ impl LiquidSdk {
         let create_response = self.swapper.create_receive_swap(v2_req)?;
 
         // Check if correct MRH was added to the invoice by Boltz
-        let (bip21_lbtc_address, bip21_amount_btc) = self
+        let (bip21_lbtc_address, _bip21_amount_btc) = self
             .swapper
             .check_for_mrh(&create_response.invoice)?
             .ok_or(PaymentError::receive_error("Invoice has no MRH"))?;
-        let received_bip21_amount_sat: u64 = (bip21_amount_btc * 100_000_000.0) as u64;
         ensure_sdk!(
             bip21_lbtc_address == mrh_addr_str,
             PaymentError::receive_error("Invoice has incorrect address in MRH")
         );
-        // The swap fee savings are passed on to the Sender: MRH amount = invoice amount - fees
-        let expected_bip21_amount_sat = payer_amount_sat - fees_sat;
-        ensure_sdk!(
-            received_bip21_amount_sat == expected_bip21_amount_sat,
-            PaymentError::receive_error(&format!(
-                "Invoice has incorrect amount in MRH: expected {expected_bip21_amount_sat} sat, MRH has {received_bip21_amount_sat} sat",
-            ))
-        );
 
         let swap_id = create_response.id.clone();
         let invoice = Bolt11Invoice::from_str(&create_response.invoice).map_err(|err| {
diff --git a/packages/flutter/example/pubspec.lock b/packages/flutter/example/pubspec.lock
index 0a157a9..c0268c6 100644
--- a/packages/flutter/example/pubspec.lock
+++ b/packages/flutter/example/pubspec.lock
@@ -92,10 +92,10 @@ packages:
     dependency: transitive
     description:
       name: crypto
-      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
+      sha256: ec30d999af904f33454ba22ed9a86162b35e52b44ac4807d1d93c288041d7d27
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.3"
+    version: "3.0.5"
   fake_async:
     dependency: transitive
     description: