royalties metadata check (#305)

solana-nft-programs · Sep 22, 2022 · dd73fb4 · dd73fb4
1 parent c64e4e6
commit dd73fb4
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/programs/cardinal-payment-manager/src/instructions/handle_payment_with_royalties.rs b/programs/cardinal-payment-manager/src/instructions/handle_payment_with_royalties.rs
@@ -1,3 +1,5 @@
+use mpl_token_metadata::utils::assert_derivation;
+
 use {
  crate::{errors::ErrorCode, state::*},
  anchor_lang::prelude::*,
@@ -45,6 +47,13 @@ pub fn handler<'key, 'accounts, 'remaining, 'info>(ctx: Context<'key, 'accounts,
  .expect("Division error");
  let total_fees = maker_fee.checked_add(taker_fee).expect("Add error");
 
+ // assert metadata account derivation
+ assert_derivation(
+ &mpl_token_metadata::id(),
+ &ctx.accounts.mint_metadata.to_account_info(),
+ &[mpl_token_metadata::state::PREFIX.as_bytes(), mpl_token_metadata::id().as_ref(), ctx.accounts.mint.key().as_ref()],
+ )?;
+
  // royalties
  let mut fees_paid_out: u64 = 0;
  if !ctx.accounts.mint_metadata.data_is_empty() {