Adding assert_owner_in to mpl-utils. (#1168)

Author: blockiosaurus

core/rust/utils/src/assertions.rs

@@ -7,6 +7,8 @@ use solana_program::{
  rent::Rent,
 };
 
+use crate::cmp_pubkeys;
+
 pub fn assert_signer(account_info: &AccountInfo) -> ProgramResult {
  if !account_info.is_signer {
  Err(ProgramError::MissingRequiredSignature)
@@ -39,6 +41,18 @@ pub fn assert_owned_by(
  }
 }
 
+pub fn assert_owner_in(
+ account: &AccountInfo,
+ owners: &[Pubkey],
+ error: impl Into<ProgramError>,
+) -> ProgramResult {
+ if owners.iter().any(|owner| cmp_pubkeys(owner, account.owner)) {
+ Ok(())
+ } else {
+ Err(error.into())
+ }
+}
+
 pub fn assert_derivation(
  program_id: &Pubkey,
  account: &AccountInfo,