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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::{extension::StateWithExtensions, state::Mint}, |
| 14 | + spl_token_group_interface::{ |
| 15 | + error::TokenGroupError, |
| 16 | + instruction::{ |
| 17 | + InitializeGroup, TokenGroupInstruction, UpdateGroupAuthority, UpdateGroupMaxSize, |
| 18 | + }, |
| 19 | + state::{TokenGroup, TokenGroupMember}, |
| 20 | + }, |
| 21 | + spl_type_length_value::state::TlvStateMut, |
| 22 | +}; |
| 23 | + |
| 24 | +fn check_update_authority( |
| 25 | + update_authority_info: &AccountInfo, |
| 26 | + expected_update_authority: &OptionalNonZeroPubkey, |
| 27 | +) -> Result<(), ProgramError> { |
| 28 | + if !update_authority_info.is_signer { |
| 29 | + return Err(ProgramError::MissingRequiredSignature); |
| 30 | + } |
| 31 | + let update_authority = Option::<Pubkey>::from(*expected_update_authority) |
| 32 | + .ok_or(TokenGroupError::ImmutableGroup)?; |
| 33 | + if update_authority != *update_authority_info.key { |
| 34 | + return Err(TokenGroupError::IncorrectUpdateAuthority.into()); |
| 35 | + } |
| 36 | + Ok(()) |
| 37 | +} |
| 38 | + |
| 39 | +/// Processes an [InitializeGroup](enum.GroupInterfaceInstruction.html) |
| 40 | +/// instruction |
| 41 | +pub fn process_initialize_group( |
| 42 | + _program_id: &Pubkey, |
| 43 | + accounts: &[AccountInfo], |
| 44 | + data: InitializeGroup, |
| 45 | +) -> ProgramResult { |
| 46 | + // Assumes one has already created a mint for the group. |
| 47 | + let account_info_iter = &mut accounts.iter(); |
| 48 | + |
| 49 | + // Accounts expected by this instruction: |
| 50 | + // |
| 51 | + // 0. `[w]` Group |
| 52 | + // 1. `[]` Mint |
| 53 | + // 2. `[s]` Mint authority |
| 54 | + let group_info = next_account_info(account_info_iter)?; |
| 55 | + let mint_info = next_account_info(account_info_iter)?; |
| 56 | + let mint_authority_info = next_account_info(account_info_iter)?; |
| 57 | + |
| 58 | + { |
| 59 | + // IMPORTANT: this example program is designed to work with any |
| 60 | + // program that implements the SPL token interface, so there is no |
| 61 | + // ownership check on the mint account. |
| 62 | + let mint_data = mint_info.try_borrow_data()?; |
| 63 | + let mint = StateWithExtensions::<Mint>::unpack(&mint_data)?; |
| 64 | + |
| 65 | + if !mint_authority_info.is_signer { |
| 66 | + return Err(ProgramError::MissingRequiredSignature); |
| 67 | + } |
| 68 | + if mint.base.mint_authority.as_ref() != COption::Some(mint_authority_info.key) { |
| 69 | + return Err(TokenGroupError::IncorrectMintAuthority.into()); |
| 70 | + } |
| 71 | + } |
| 72 | + |
| 73 | + // Allocate a TLV entry for the space and write it in |
| 74 | + let mut buffer = group_info.try_borrow_mut_data()?; |
| 75 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 76 | + let (group, _) = state.init_value::<TokenGroup>(false)?; |
| 77 | + *group = TokenGroup::new(mint_info.key, data.update_authority, data.max_size.into()); |
| 78 | + |
| 79 | + Ok(()) |
| 80 | +} |
| 81 | + |
| 82 | +/// Processes an |
| 83 | +/// [UpdateGroupMaxSize](enum.GroupInterfaceInstruction.html) |
| 84 | +/// instruction |
| 85 | +pub fn process_update_group_max_size( |
| 86 | + _program_id: &Pubkey, |
| 87 | + accounts: &[AccountInfo], |
| 88 | + data: UpdateGroupMaxSize, |
| 89 | +) -> ProgramResult { |
| 90 | + let account_info_iter = &mut accounts.iter(); |
| 91 | + |
| 92 | + // Accounts expected by this instruction: |
| 93 | + // |
| 94 | + // 0. `[w]` Group |
| 95 | + // 1. `[s]` Update authority |
| 96 | + let group_info = next_account_info(account_info_iter)?; |
| 97 | + let update_authority_info = next_account_info(account_info_iter)?; |
| 98 | + |
| 99 | + let mut buffer = group_info.try_borrow_mut_data()?; |
| 100 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 101 | + let group = state.get_first_value_mut::<TokenGroup>()?; |
| 102 | + |
| 103 | + check_update_authority(update_authority_info, &group.update_authority)?; |
| 104 | + |
| 105 | + // Update the max size (zero-copy) |
| 106 | + group.update_max_size(data.max_size.into())?; |
| 107 | + |
| 108 | + Ok(()) |
| 109 | +} |
| 110 | + |
| 111 | +/// Processes an |
| 112 | +/// [UpdateGroupAuthority](enum.GroupInterfaceInstruction.html) |
| 113 | +/// instruction |
| 114 | +pub fn process_update_group_authority( |
| 115 | + _program_id: &Pubkey, |
| 116 | + accounts: &[AccountInfo], |
| 117 | + data: UpdateGroupAuthority, |
| 118 | +) -> ProgramResult { |
| 119 | + let account_info_iter = &mut accounts.iter(); |
| 120 | + |
| 121 | + // Accounts expected by this instruction: |
| 122 | + // |
| 123 | + // 0. `[w]` Group |
| 124 | + // 1. `[s]` Current update authority |
| 125 | + let group_info = next_account_info(account_info_iter)?; |
| 126 | + let update_authority_info = next_account_info(account_info_iter)?; |
| 127 | + |
| 128 | + let mut buffer = group_info.try_borrow_mut_data()?; |
| 129 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 130 | + let group = state.get_first_value_mut::<TokenGroup>()?; |
| 131 | + |
| 132 | + check_update_authority(update_authority_info, &group.update_authority)?; |
| 133 | + |
| 134 | + // Update the authority (zero-copy) |
| 135 | + group.update_authority = data.new_authority; |
| 136 | + |
| 137 | + Ok(()) |
| 138 | +} |
| 139 | + |
| 140 | +/// Processes an [InitializeMember](enum.GroupInterfaceInstruction.html) |
| 141 | +/// instruction |
| 142 | +pub fn process_initialize_member(_program_id: &Pubkey, accounts: &[AccountInfo]) -> ProgramResult { |
| 143 | + // For this group, we are going to assume the group has been |
| 144 | + // initialized, and we're also assuming a mint has been created for the |
| 145 | + // member. |
| 146 | + // Group members in this example can have their own separate |
| 147 | + // metadata that differs from the metadata of the group, since |
| 148 | + // metadata is not involved here. |
| 149 | + let account_info_iter = &mut accounts.iter(); |
| 150 | + |
| 151 | + // Accounts expected by this instruction: |
| 152 | + // |
| 153 | + // 0. `[w]` Member |
| 154 | + // 1. `[]` Member Mint |
| 155 | + // 2. `[s]` Member Mint authority |
| 156 | + // 3. `[w]` Group |
| 157 | + // 4. `[s]` Group update authority |
| 158 | + let member_info = next_account_info(account_info_iter)?; |
| 159 | + let member_mint_info = next_account_info(account_info_iter)?; |
| 160 | + let member_mint_authority_info = next_account_info(account_info_iter)?; |
| 161 | + let group_info = next_account_info(account_info_iter)?; |
| 162 | + let group_update_authority_info = next_account_info(account_info_iter)?; |
| 163 | + |
| 164 | + // Mint checks on the member |
| 165 | + { |
| 166 | + // IMPORTANT: this example program is designed to work with any |
| 167 | + // program that implements the SPL token interface, so there is no |
| 168 | + // ownership check on the mint account. |
| 169 | + let member_mint_data = member_mint_info.try_borrow_data()?; |
| 170 | + let member_mint = StateWithExtensions::<Mint>::unpack(&member_mint_data)?; |
| 171 | + |
| 172 | + if !member_mint_authority_info.is_signer { |
| 173 | + return Err(ProgramError::MissingRequiredSignature); |
| 174 | + } |
| 175 | + if member_mint.base.mint_authority.as_ref() != COption::Some(member_mint_authority_info.key) |
| 176 | + { |
| 177 | + return Err(TokenGroupError::IncorrectMintAuthority.into()); |
| 178 | + } |
| 179 | + } |
| 180 | + |
| 181 | + // Make sure the member account is not the same as the group accout |
| 182 | + if member_info.key == group_info.key { |
| 183 | + return Err(TokenGroupError::MemberAccountIsGroupAccount.into()); |
| 184 | + } |
| 185 | + |
| 186 | + // Increment the size of the group |
| 187 | + let mut buffer = group_info.try_borrow_mut_data()?; |
| 188 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 189 | + let group = state.get_first_value_mut::<TokenGroup>()?; |
| 190 | + |
| 191 | + check_update_authority(group_update_authority_info, &group.update_authority)?; |
| 192 | + let member_number = group.increment_size()?; |
| 193 | + |
| 194 | + // Allocate a TLV entry for the space and write it in |
| 195 | + let mut buffer = member_info.try_borrow_mut_data()?; |
| 196 | + let mut state = TlvStateMut::unpack(&mut buffer)?; |
| 197 | + // Note if `allow_repetition: true` is instead used here, one can initialize |
| 198 | + // the same token as a member of multiple groups! |
| 199 | + let (member, _) = state.init_value::<TokenGroupMember>(false)?; |
| 200 | + *member = TokenGroupMember::new(member_mint_info.key, group_info.key, member_number); |
| 201 | + |
| 202 | + Ok(()) |
| 203 | +} |
| 204 | + |
| 205 | +/// Processes an `SplTokenGroupInstruction` |
| 206 | +pub fn process(program_id: &Pubkey, accounts: &[AccountInfo], input: &[u8]) -> ProgramResult { |
| 207 | + let instruction = TokenGroupInstruction::unpack(input)?; |
| 208 | + match instruction { |
| 209 | + TokenGroupInstruction::InitializeGroup(data) => { |
| 210 | + msg!("Instruction: InitializeGroup"); |
| 211 | + process_initialize_group(program_id, accounts, data) |
| 212 | + } |
| 213 | + TokenGroupInstruction::UpdateGroupMaxSize(data) => { |
| 214 | + msg!("Instruction: UpdateGroupMaxSize"); |
| 215 | + process_update_group_max_size(program_id, accounts, data) |
| 216 | + } |
| 217 | + TokenGroupInstruction::UpdateGroupAuthority(data) => { |
| 218 | + msg!("Instruction: UpdateGroupAuthority"); |
| 219 | + process_update_group_authority(program_id, accounts, data) |
| 220 | + } |
| 221 | + TokenGroupInstruction::InitializeMember(_) => { |
| 222 | + msg!("Instruction: InitializeMember"); |
| 223 | + process_initialize_member(program_id, accounts) |
| 224 | + } |
| 225 | + } |
| 226 | +} |
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