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use super::*;
// Large buffer because the older master editions have two pubkeys in them,
// need to keep two versions same size because the conversion process actually
// changes the same account by rewriting it.
pub const MAX_MASTER_EDITION_LEN: usize = 1 + 9 + 8 + 264;
// The last byte of the account containts the token standard value for
// pNFT assets. This is used to restrict legacy operations on the master
// edition account.
pub const TOKEN_STANDARD_INDEX: usize = MAX_MASTER_EDITION_LEN - 1;
// The second to last byte of the account contains the fee flag, indicating
// if the account has fees available for retrieval.
pub const MASTER_EDITION_FEE_FLAG_INDEX: usize = MAX_MASTER_EDITION_LEN - 2;
pub trait MasterEdition {
fn key(&self) -> Key;
fn supply(&self) -> u64;
fn set_supply(&mut self, supply: u64);
fn max_supply(&self) -> Option<u64>;
fn save(&self, account: &AccountInfo) -> ProgramResult;
}
pub fn get_master_edition(account: &AccountInfo) -> Result<Box<dyn MasterEdition>, ProgramError> {
let version = account.data.borrow()[0];
// For some reason when converting Key to u8 here, it becomes unreachable. Use direct constant instead.
let master_edition_result: Result<Box<dyn MasterEdition>, ProgramError> = match version {
2 => {
let me = MasterEditionV1::from_account_info(account)?;
Ok(Box::new(me))
}
6 => {
let me = MasterEditionV2::from_account_info(account)?;
Ok(Box::new(me))
}
_ => Err(MetadataError::DataTypeMismatch.into()),
};
master_edition_result
}
#[macro_export]
macro_rules! edition_seeds {
($mint:expr) => {{
let path = vec![
"metadata".as_bytes(),
$crate::ID.as_ref(),
$mint.as_ref(),
"edition".as_bytes(),
];
let (_, bump) = Pubkey::find_program_address(&path, &$crate::ID);
&[
"metadata".as_bytes(),
$crate::ID.as_ref(),
$mint.as_ref(),
"edition".as_bytes(),
&[bump],
]
}};
}
#[repr(C)]
#[cfg_attr(feature = "serde-feature", derive(Serialize, Deserialize))]
#[derive(Clone, Debug, PartialEq, Eq, BorshSerialize, BorshDeserialize, ShankAccount)]
pub struct MasterEditionV2 {
pub key: Key,
pub supply: u64,
pub max_supply: Option<u64>,
}
impl Default for MasterEditionV2 {
fn default() -> Self {
MasterEditionV2 {
key: Key::MasterEditionV2,
supply: 0,
max_supply: Some(0),
}
}
}
impl TokenMetadataAccount for MasterEditionV2 {
fn key() -> Key {
Key::MasterEditionV2
}
fn size() -> usize {
MAX_MASTER_EDITION_LEN
}
}
impl MasterEdition for MasterEditionV2 {
fn key(&self) -> Key {
self.key
}
fn supply(&self) -> u64 {
self.supply
}
fn set_supply(&mut self, supply: u64) {
self.supply = supply;
}
fn max_supply(&self) -> Option<u64> {
self.max_supply
}
fn save(&self, account: &AccountInfo) -> ProgramResult {
let mut storage = &mut account.data.borrow_mut()[..MASTER_EDITION_FEE_FLAG_INDEX];
BorshSerialize::serialize(self, &mut storage)?;
Ok(())
}
}
#[repr(C)]
#[cfg_attr(feature = "serde-feature", derive(Serialize, Deserialize))]
#[derive(Clone, Debug, PartialEq, Eq, BorshSerialize, BorshDeserialize, ShankAccount)]
pub struct MasterEditionV1 {
pub key: Key,
pub supply: u64,
pub max_supply: Option<u64>,
/// Can be used to mint tokens that give one-time permission to mint a single limited edition.
pub printing_mint: Pubkey,
/// If you don't know how many printing tokens you are going to need, but you do know
/// you are going to need some amount in the future, you can use a token from this mint.
/// Coming back to token metadata with one of these tokens allows you to mint (one time)
/// any number of printing tokens you want. This is used for instance by Auction Manager
/// with participation NFTs, where we dont know how many people will bid and need participation
/// printing tokens to redeem, so we give it ONE of these tokens to use after the auction is over,
/// because when the auction begins we just dont know how many printing tokens we will need,
/// but at the end we will. At the end it then burns this token with token-metadata to
/// get the printing tokens it needs to give to bidders. Each bidder then redeems a printing token
/// to get their limited editions.
pub one_time_printing_authorization_mint: Pubkey,
}
impl TokenMetadataAccount for MasterEditionV1 {
fn key() -> Key {
Key::MasterEditionV1
}
fn size() -> usize {
MAX_MASTER_EDITION_LEN
}
}
impl MasterEdition for MasterEditionV1 {
fn key(&self) -> Key {
self.key
}
fn supply(&self) -> u64 {
self.supply
}
fn max_supply(&self) -> Option<u64> {
self.max_supply
}
fn set_supply(&mut self, supply: u64) {
self.supply = supply;
}
fn save(&self, account: &AccountInfo) -> ProgramResult {
let mut storage = &mut account.data.borrow_mut()[..MASTER_EDITION_FEE_FLAG_INDEX];
BorshSerialize::serialize(self, &mut storage)?;
Ok(())
}
}
/*
#[cfg(test)]
mod tests {
use borsh::BorshSerialize;
use solana_program::account_info::AccountInfo;
use solana_sdk::{signature::Keypair, signer::Signer};
use crate::{
error::MetadataError,
state::{Key, MasterEditionV2, Metadata, TokenMetadataAccount},
ID,
};
#[test]
fn successfully_deserialize() {
let expected_data = MasterEditionV2::default();
let mut buf = Vec::new();
expected_data.serialize(&mut buf).unwrap();
MasterEditionV2::pad_length(&mut buf).unwrap();
let pubkey = Keypair::new().pubkey();
let owner = &ID;
let mut lamports = 1_000_000_000;
let mut data = buf.clone();
let account_info = AccountInfo::new(
&pubkey,
false,
true,
&mut lamports,
&mut data,
owner,
false,
1_000_000_000,
);
let data = MasterEditionV2::from_account_info(&account_info).unwrap();
assert_eq!(data.key, Key::MasterEditionV2);
assert_eq!(data, expected_data);
}
#[test]
fn deserializing_wrong_account_type_fails() {
let wrong_type = Metadata::default();
let mut buf = Vec::new();
wrong_type.serialize(&mut buf).unwrap();
Metadata::pad_length(&mut buf).unwrap();
let pubkey = Keypair::new().pubkey();
let owner = &ID;
let mut lamports = 1_000_000_000;
let mut data = buf.clone();
let account_info = AccountInfo::new(
&pubkey,
false,
true,
&mut lamports,
&mut data,
owner,
false,
1_000_000_000,
);
let error = MasterEditionV2::from_account_info(&account_info).unwrap_err();
assert_eq!(error, MetadataError::DataTypeMismatch.into());
}
}
*/