token 2022: add UpdateGroupAuthority instruction from SPL Token Gro…

…up interface

token/client/src/token.rs

@@ -3721,4 +3721,25 @@ where
         )
         .await
     }
+
+    /// Update the token-group authority in a mint
+    pub async fn token_group_update_authority<S: Signers>(
+        &self,
+        current_authority: &Pubkey,
+        new_authority: Option<Pubkey>,
+        signing_keypairs: &S,
+    ) -> TokenResult<T::Output> {
+        self.process_ixs(
+            &[
+                spl_token_group_interface::instruction::update_group_authority(
+                    &self.program_id,
+                    &self.pubkey,
+                    current_authority,
+                    new_authority,
+                ),
+            ],
+            signing_keypairs,
+        )
+        .await
+    }
 }

token/program-2022-test/tests/token_group_update_authority.rs

@@ -0,0 +1,202 @@
+#![cfg(feature = "test-sbf")]
+
+mod program_test;
+use {
+    program_test::TestContext,
+    solana_program_test::{processor, tokio, ProgramTest},
+    solana_sdk::{
+        instruction::InstructionError,
+        pubkey::Pubkey,
+        signature::Signer,
+        signer::keypair::Keypair,
+        transaction::{Transaction, TransactionError},
+        transport::TransportError,
+    },
+    spl_pod::optional_keys::OptionalNonZeroPubkey,
+    spl_token_2022::{extension::BaseStateWithExtensions, processor::Processor},
+    spl_token_client::token::{ExtensionInitializationParams, TokenError as TokenClientError},
+    spl_token_group_interface::{
+        error::TokenGroupError, instruction::update_group_authority, state::TokenGroup,
+    },
+    std::{convert::TryInto, sync::Arc},
+};
+
+fn setup_program_test() -> ProgramTest {
+    let mut program_test = ProgramTest::default();
+    program_test.add_program(
+        "spl_token_2022",
+        spl_token_2022::id(),
+        processor!(Processor::process),
+    );
+    program_test
+}
+
+async fn setup(mint: Keypair, authority: &Pubkey) -> TestContext {
+    let program_test = setup_program_test();
+
+    let context = program_test.start_with_context().await;
+    let context = Arc::new(tokio::sync::Mutex::new(context));
+    let mut context = TestContext {
+        context,
+        token_context: None,
+    };
+    let group_address = Some(mint.pubkey());
+    context
+        .init_token_with_mint_keypair_and_freeze_authority(
+            mint,
+            vec![ExtensionInitializationParams::GroupPointer {
+                authority: Some(*authority),
+                group_address,
+            }],
+            None,
+        )
+        .await
+        .unwrap();
+    context
+}
+
+#[tokio::test]
+async fn success_update() {
+    let authority = Keypair::new();
+    let mint_keypair = Keypair::new();
+    let mut test_context = setup(mint_keypair.insecure_clone(), &authority.pubkey()).await;
+    let payer_pubkey = test_context.context.lock().await.payer.pubkey();
+    let token_context = test_context.token_context.take().unwrap();
+
+    let update_authority = Keypair::new();
+    let mut token_group = TokenGroup::new(
+        &mint_keypair.pubkey(),
+        Some(update_authority.pubkey()).try_into().unwrap(),
+        10,
+    );
+
+    token_context
+        .token
+        .token_group_initialize_with_rent_transfer(
+            &payer_pubkey,
+            &token_context.mint_authority.pubkey(),
+            &update_authority.pubkey(),
+            10,
+            &[&token_context.mint_authority],
+        )
+        .await
+        .unwrap();
+
+    let new_update_authority = Keypair::new();
+    let new_update_authority_pubkey =
+        OptionalNonZeroPubkey::try_from(Some(new_update_authority.pubkey())).unwrap();
+    token_group.update_authority = new_update_authority_pubkey;
+
+    token_context
+        .token
+        .token_group_update_authority(
+            &update_authority.pubkey(),
+            Some(new_update_authority.pubkey()),
+            &[&update_authority],
+        )
+        .await
+        .unwrap();
+
+    // check that the data is correct
+    let mint = token_context.token.get_mint_info().await.unwrap();
+    let fetched_group = mint.get_extension::<TokenGroup>().unwrap();
+    assert_eq!(fetched_group, &token_group);
+
+    // unset
+    token_group.update_authority = None.try_into().unwrap();
+    token_context
+        .token
+        .token_group_update_authority(
+            &new_update_authority.pubkey(),
+            None,
+            &[&new_update_authority],
+        )
+        .await
+        .unwrap();
+
+    let mint = token_context.token.get_mint_info().await.unwrap();
+    let fetched_group = mint.get_extension::<TokenGroup>().unwrap();
+    assert_eq!(fetched_group, &token_group);
+
+    // fail to update
+    let error = token_context
+        .token
+        .token_group_update_authority(
+            &new_update_authority.pubkey(),
+            Some(new_update_authority.pubkey()),
+            &[&new_update_authority],
+        )
+        .await
+        .unwrap_err();
+    assert_eq!(
+        error,
+        TokenClientError::Client(Box::new(TransportError::TransactionError(
+            TransactionError::InstructionError(
+                0,
+                InstructionError::Custom(TokenGroupError::ImmutableGroup as u32)
+            )
+        )))
+    );
+}
+
+#[tokio::test]
+async fn fail_authority_checks() {
+    let program_id = spl_token_2022::id();
+    let authority = Keypair::new();
+    let mint_keypair = Keypair::new();
+    let mint_pubkey = mint_keypair.pubkey();
+    let mut test_context = setup(mint_keypair, &authority.pubkey()).await;
+    let payer_pubkey = test_context.context.lock().await.payer.pubkey();
+    let token_context = test_context.token_context.take().unwrap();
+
+    let update_authority = Keypair::new();
+    token_context
+        .token
+        .token_group_initialize_with_rent_transfer(
+            &payer_pubkey,
+            &token_context.mint_authority.pubkey(),
+            &update_authority.pubkey(),
+            10,
+            &[&token_context.mint_authority],
+        )
+        .await
+        .unwrap();
+
+    // wrong authority
+    let error = token_context
+        .token
+        .token_group_update_authority(&payer_pubkey, None, &[] as &[&dyn Signer; 0])
+        .await
+        .unwrap_err();
+    assert_eq!(
+        error,
+        TokenClientError::Client(Box::new(TransportError::TransactionError(
+            TransactionError::InstructionError(
+                0,
+                InstructionError::Custom(TokenGroupError::IncorrectUpdateAuthority as u32),
+            )
+        )))
+    );
+
+    // no signature
+    let mut context = test_context.context.lock().await;
+    let mut instruction =
+        update_group_authority(&program_id, &mint_pubkey, &authority.pubkey(), None);
+    instruction.accounts[1].is_signer = false;
+    let transaction = Transaction::new_signed_with_payer(
+        &[instruction],
+        Some(&context.payer.pubkey()),
+        &[&context.payer],
+        context.last_blockhash,
+    );
+    let error = context
+        .banks_client
+        .process_transaction(transaction)
+        .await
+        .unwrap_err()
+        .unwrap();
+    assert_eq!(
+        error,
+        TransactionError::InstructionError(0, InstructionError::MissingRequiredSignature,)
+    );
+}

token/program-2022/src/extension/token_group/processor.rs

@@ -21,7 +21,9 @@ use {
     spl_pod::optional_keys::OptionalNonZeroPubkey,
     spl_token_group_interface::{
         error::TokenGroupError,
-        instruction::{InitializeGroup, TokenGroupInstruction, UpdateGroupMaxSize},
+        instruction::{
+            InitializeGroup, TokenGroupInstruction, UpdateGroupAuthority, UpdateGroupMaxSize,
+        },
         state::TokenGroup,
     },
 };
@@ -116,6 +118,30 @@ pub fn process_update_group_max_size(
     Ok(())
 }
 
+/// Processes an
+/// [UpdateGroupAuthority](enum.GroupInterfaceInstruction.html)
+/// instruction
+pub fn process_update_group_authority(
+    _program_id: &Pubkey,
+    accounts: &[AccountInfo],
+    data: UpdateGroupAuthority,
+) -> ProgramResult {
+    let account_info_iter = &mut accounts.iter();
+
+    let group_info = next_account_info(account_info_iter)?;
+    let update_authority_info = next_account_info(account_info_iter)?;
+
+    let mut buffer = group_info.try_borrow_mut_data()?;
+    let mut state = StateWithExtensionsMut::<Mint>::unpack(&mut buffer)?;
+    let group = state.get_extension_mut::<TokenGroup>()?;
+
+    check_update_authority(update_authority_info, &group.update_authority)?;
+
+    group.update_authority = data.new_authority;
+
+    Ok(())
+}
+
 /// Processes an [Instruction](enum.Instruction.html).
 pub fn process_instruction(
     program_id: &Pubkey,
@@ -131,6 +157,10 @@ pub fn process_instruction(
             msg!("TokenGroupInstruction: UpdateGroupMaxSize");
             process_update_group_max_size(program_id, accounts, data)
         }
+        TokenGroupInstruction::UpdateGroupAuthority(data) => {
+            msg!("TokenGroupInstruction: UpdateGroupAuthority");
+            process_update_group_authority(program_id, accounts, data)
+        }
         _ => Err(ProgramError::InvalidInstructionData),
     }
 }