Add any allowlist type (#76)

* add any allowlist type

* add comment

programs/mmm/src/state.rs

@@ -10,6 +10,8 @@ pub const ALLOWLIST_KIND_FVCA: u8 = 1;
 pub const ALLOWLIST_KIND_MINT: u8 = 2;
 pub const ALLOWLIST_KIND_MCC: u8 = 3;
 pub const ALLOWLIST_KIND_METADATA: u8 = 4;
+// ANY nft will pass the allowlist check, please make sure to use cosigner to check NFT validity
+pub const ALLOWLIST_KIND_ANY: u8 = u8::MAX;
 
 #[derive(Default, Copy, Clone, AnchorSerialize, AnchorDeserialize)]
 pub struct Allowlist {
@@ -24,11 +26,12 @@ impl Allowlist {
     // kind == 3: verified MCC
     // kind == 4: metadata
     // kind == 5,6,... will be supported in the future
+    // kind == 255: any
     pub fn valid(&self) -> bool {
-        if self.kind > ALLOWLIST_KIND_METADATA {
+        if self.kind > ALLOWLIST_KIND_METADATA && self.kind != ALLOWLIST_KIND_ANY {
             return false;
         }
-        if self.kind != 0 {
+        if self.kind != 0 && self.kind != ALLOWLIST_KIND_ANY {
             return self.value.ne(&Pubkey::default());
         }
         true

programs/mmm/src/util.rs

@@ -89,6 +89,10 @@ pub fn check_allowlists_for_mint(
     for allowlist_val in allowlists.iter() {
         match allowlist_val.kind {
             ALLOWLIST_KIND_EMPTY => {}
+            ALLOWLIST_KIND_ANY => {
+                // any is a special case, we don't need to check anything else
+                return Ok(parsed_metadata);
+            }
             ALLOWLIST_KIND_FVCA => {
                 if let Some(ref creators) = parsed_metadata.data.creators {
                     // TODO: can we make sure we only take master_edition here?

sdk/src/constants.ts

@@ -15,4 +15,5 @@ export enum AllowlistKind {
   mint = 2,
   mcc = 3,
   metadata = 4,
+  any = 255,
 }