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| 1 | +//! Program state processor |
| 2 | +
|
| 3 | +use { |
| 4 | + solana_program::{ |
| 5 | + account_info::{next_account_info, AccountInfo}, |
| 6 | + entrypoint::ProgramResult, |
| 7 | + msg, |
| 8 | + program_error::ProgramError, |
| 9 | + program_option::COption, |
| 10 | + pubkey::Pubkey, |
| 11 | + }, |
| 12 | + spl_pod::optional_keys::OptionalNonZeroPubkey, |
| 13 | + spl_token_2022::{ |
| 14 | + extension::{ |
| 15 | + metadata_pointer::MetadataPointer, BaseStateWithExtensions, StateWithExtensions, |
| 16 | + }, |
| 17 | + state::Mint, |
| 18 | + }, |
| 19 | + spl_token_group_interface::{ |
| 20 | + error::TokenGroupError, |
| 21 | + instruction::{InitializeGroup, TokenGroupInstruction}, |
| 22 | + state::{TokenGroup, TokenGroupMember}, |
| 23 | + }, |
| 24 | + spl_token_metadata_interface::state::TokenMetadata, |
| 25 | + spl_type_length_value::state::TlvStateMut, |
| 26 | +}; |
| 27 | + |
| 28 | +fn check_update_authority( |
| 29 | + update_authority_info: &AccountInfo, |
| 30 | + expected_update_authority: &OptionalNonZeroPubkey, |
| 31 | +) -> ProgramResult { |
| 32 | + if !update_authority_info.is_signer { |
| 33 | + return Err(ProgramError::MissingRequiredSignature); |
| 34 | + } |
| 35 | + let update_authority = Option::<Pubkey>::from(*expected_update_authority) |
| 36 | + .ok_or(TokenGroupError::ImmutableGroup)?; |
| 37 | + if update_authority != *update_authority_info.key { |
| 38 | + return Err(TokenGroupError::IncorrectUpdateAuthority.into()); |
| 39 | + } |
| 40 | + Ok(()) |
| 41 | +} |
| 42 | + |
| 43 | +/// Checks that a mint is valid and contains metadata. |
| 44 | +fn check_mint_and_metadata( |
| 45 | + mint_info: &AccountInfo, |
| 46 | + mint_authority_info: &AccountInfo, |
| 47 | +) -> ProgramResult { |
| 48 | + let mint_data = mint_info.try_borrow_data()?; |
| 49 | + let mint = StateWithExtensions::<Mint>::unpack(&mint_data)?; |
| 50 | + |
| 51 | + if !mint_authority_info.is_signer { |
| 52 | + return Err(ProgramError::MissingRequiredSignature); |
| 53 | + } |
| 54 | + if mint.base.mint_authority.as_ref() != COption::Some(mint_authority_info.key) { |
| 55 | + return Err(TokenGroupError::IncorrectMintAuthority.into()); |
| 56 | + } |
| 57 | + |
| 58 | + let metadata_pointer = mint.get_extension::<MetadataPointer>()?; |
| 59 | + let metadata_pointer_address = Option::<Pubkey>::from(metadata_pointer.metadata_address); |
| 60 | + |
| 61 | + // If the metadata is inside the mint (Token2022), make sure it contains |
| 62 | + // valid TokenMetadata |
| 63 | + if metadata_pointer_address == Some(*mint_info.key) { |
| 64 | + mint.get_variable_len_extension::<TokenMetadata>()?; |
| 65 | + } |
| 66 | + |
| 67 | + Ok(()) |
| 68 | +} |
| 69 | + |
| 70 | +/// Processes an [InitializeGroup](enum.GroupInterfaceInstruction.html) |
| 71 | +/// instruction to initialize a collection. |
| 72 | +pub fn process_initialize_collection( |
| 73 | + _program_id: &Pubkey, |
| 74 | + accounts: &[AccountInfo], |
| 75 | + data: InitializeGroup, |
| 76 | +) -> ProgramResult { |
| 77 | + let account_info_iter = &mut accounts.iter(); |
| 78 | + |
| 79 | + let collection_info = next_account_info(account_info_iter)?; |
| 80 | + let mint_info = next_account_info(account_info_iter)?; |
| 81 | + let mint_authority_info = next_account_info(account_info_iter)?; |
| 82 | + |
| 83 | + check_mint_and_metadata(mint_info, mint_authority_info)?; |
| 84 | + |
| 85 | + // Initialize the collection |
| 86 | + let mut buffer = collection_info.try_borrow_mut_data()?; |
| 87 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 88 | + let (collection, _) = state.init_value::<TokenGroup>(false)?; |
| 89 | + *collection = TokenGroup::new(mint_info.key, data.update_authority, data.max_size.into()); |
| 90 | + |
| 91 | + Ok(()) |
| 92 | +} |
| 93 | + |
| 94 | +/// Processes an [InitializeMember](enum.GroupInterfaceInstruction.html) |
| 95 | +/// instruction |
| 96 | +pub fn process_initialize_collection_member( |
| 97 | + _program_id: &Pubkey, |
| 98 | + accounts: &[AccountInfo], |
| 99 | +) -> ProgramResult { |
| 100 | + let account_info_iter = &mut accounts.iter(); |
| 101 | + |
| 102 | + let member_info = next_account_info(account_info_iter)?; |
| 103 | + let mint_info = next_account_info(account_info_iter)?; |
| 104 | + let mint_authority_info = next_account_info(account_info_iter)?; |
| 105 | + let collection_info = next_account_info(account_info_iter)?; |
| 106 | + let collection_update_authority_info = next_account_info(account_info_iter)?; |
| 107 | + |
| 108 | + check_mint_and_metadata(mint_info, mint_authority_info)?; |
| 109 | + |
| 110 | + if member_info.key == collection_info.key { |
| 111 | + return Err(TokenGroupError::MemberAccountIsGroupAccount.into()); |
| 112 | + } |
| 113 | + |
| 114 | + let mut buffer = collection_info.try_borrow_mut_data()?; |
| 115 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 116 | + let collection = state.get_first_value_mut::<TokenGroup>()?; |
| 117 | + |
| 118 | + check_update_authority( |
| 119 | + collection_update_authority_info, |
| 120 | + &collection.update_authority, |
| 121 | + )?; |
| 122 | + let member_number = collection.increment_size()?; |
| 123 | + |
| 124 | + let mut buffer = member_info.try_borrow_mut_data()?; |
| 125 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 126 | + |
| 127 | + // This program uses `allow_repetition: true` because the same mint can be |
| 128 | + // a member of multiple collections. |
| 129 | + let (member, _) = state.init_value::<TokenGroupMember>(/* allow_repetition */ true)?; |
| 130 | + *member = TokenGroupMember::new(mint_info.key, collection_info.key, member_number); |
| 131 | + |
| 132 | + Ok(()) |
| 133 | +} |
| 134 | + |
| 135 | +/// Processes an `SplTokenGroupInstruction` |
| 136 | +pub fn process(program_id: &Pubkey, accounts: &[AccountInfo], input: &[u8]) -> ProgramResult { |
| 137 | + let instruction = TokenGroupInstruction::unpack(input)?; |
| 138 | + match instruction { |
| 139 | + TokenGroupInstruction::InitializeGroup(data) => { |
| 140 | + msg!("Instruction: InitializeCollection"); |
| 141 | + process_initialize_collection(program_id, accounts, data) |
| 142 | + } |
| 143 | + TokenGroupInstruction::UpdateGroupMaxSize(data) => { |
| 144 | + msg!("Instruction: UpdateCollectionMaxSize"); |
| 145 | + // Same functionality as the example program |
| 146 | + spl_token_group_example::processor::process_update_group_max_size( |
| 147 | + program_id, accounts, data, |
| 148 | + ) |
| 149 | + } |
| 150 | + TokenGroupInstruction::UpdateGroupAuthority(data) => { |
| 151 | + msg!("Instruction: UpdateCollectionAuthority"); |
| 152 | + // Same functionality as the example program |
| 153 | + spl_token_group_example::processor::process_update_group_authority( |
| 154 | + program_id, accounts, data, |
| 155 | + ) |
| 156 | + } |
| 157 | + TokenGroupInstruction::InitializeMember(_) => { |
| 158 | + msg!("Instruction: InitializeCollectionMember"); |
| 159 | + process_initialize_collection_member(program_id, accounts) |
| 160 | + } |
| 161 | + } |
| 162 | +} |
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