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Allow seed authority to seed metadata for existing tokens

This commit is contained in:
Hendrik Hofstadt 2021-10-08 13:22:49 +02:00
parent f6e6a7b776
commit f1f13b2dac
1 changed files with 33 additions and 7 deletions
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40
rust/token-metadata/program/src/utils.rs
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@ -300,6 +300,7 @@ pub fn assert_supply_invariance(
Ok(())
}
pub fn transfer_mint_authority<'a>(
edition_key: &Pubkey,
edition_account_info: &AccountInfo<'a>,
@ -323,7 +324,7 @@ pub fn transfer_mint_authority<'a>(
mint_authority_info.key,
&[&mint_authority_info.key],
)
.unwrap(),
.unwrap(),
accounts,
&[],
)?;
@ -339,7 +340,7 @@ pub fn transfer_mint_authority<'a>(
mint_authority_info.key,
&[&mint_authority_info.key],
)
.unwrap(),
.unwrap(),
accounts,
&[],
)?;
@ -625,7 +626,7 @@ pub fn mint_limited_edition<'a>(
edition_override,
me_supply,
)?
.to_le_bytes();
.to_le_bytes();
// Now make sure this mint can never be used by anybody else.
transfer_mint_authority(
@ -789,13 +790,20 @@ pub struct CreateMetadataAccountsLogicArgs<'a> {
pub rent_info: &'a AccountInfo<'a>,
}
// This equals the upgrade authority of the metadata program:
// AqH29mZfQFgRpfwaPoTMWSKJ5kqauoc1FwVBRksZyQrt
const SEED_AUTHORITY: Pubkey = Pubkey::new_from_array([
0x92, 0x17, 0x2c, 0xc4, 0x72, 0x5d, 0xc0, 0x41, 0xf9, 0xdd, 0x8c, 0x51, 0x52, 0x60, 0x04, 0x26,
0x00, 0x93, 0xa3, 0x0b, 0x02, 0x73, 0xdc, 0xfa, 0x74, 0x92, 0x17, 0xfc, 0x94, 0xa2, 0x40, 0x49,
]);
/// Create a new account instruction
pub fn process_create_metadata_accounts_logic(
program_id: &Pubkey,
accounts: CreateMetadataAccountsLogicArgs,
data: Data,
allow_direct_creator_writes: bool,
is_mutable: bool,
mut is_mutable: bool,
) -> ProgramResult {
let CreateMetadataAccountsLogicArgs {
metadata_account_info,
@ -807,8 +815,26 @@ pub fn process_create_metadata_accounts_logic(
rent_info,
} = accounts;
let mut update_authority_key = *update_authority_info.key;
let mint_authority = get_mint_authority(mint_info)?;
assert_mint_authority_matches_mint(&mint_authority, mint_authority_info)?;
assert_mint_authority_matches_mint(&mint_authority, mint_authority_info).or_else(|e| {
// Allow seeding by the authority seed populator
if mint_authority_info.key == &SEED_AUTHORITY {
// Seed authority should not be able to set creators
if data.creators.is_some() {
return Err(MetadataError::InvalidOperation.into());
}
// When metadata is seeded, the mint authority should be able to change it
if let COption::Some(auth) = mint_authority {
update_authority_key = auth;
is_mutable = true;
}
Ok(())
} else {
Err(e)
}
})?;
assert_owned_by(mint_info, &spl_token::id())?;
let metadata_seeds = &[
@ -842,7 +868,7 @@ pub fn process_create_metadata_accounts_logic(
let mut metadata = Metadata::from_account_info(metadata_account_info)?;
assert_data_valid(
&data,
update_authority_info.key,
&update_authority_key,
&metadata,
allow_direct_creator_writes,
update_authority_info.is_signer,
@ -852,7 +878,7 @@ pub fn process_create_metadata_accounts_logic(
metadata.key = Key::MetadataV1;
metadata.data = data;
metadata.is_mutable = is_mutable;
metadata.update_authority = *update_authority_info.key;
metadata.update_authority = update_authority_key;
puff_out_data_fields(&mut metadata);