88 lines
3.1 KiB
Rust
88 lines
3.1 KiB
Rust
use crate::error::*;
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use crate::state::*;
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use anchor_lang::prelude::*;
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#[derive(Accounts)]
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pub struct InternalTransfer<'info> {
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pub registrar: AccountLoader<'info, Registrar>,
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// checking the PDA address it just an extra precaution,
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// the other constraints must be exhaustive
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#[account(
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mut,
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seeds = [registrar.key().as_ref(), b"voter".as_ref(), voter_authority.key().as_ref()],
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bump = voter.load()?.voter_bump,
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has_one = voter_authority,
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has_one = registrar)]
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pub voter: AccountLoader<'info, Voter>,
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pub voter_authority: Signer<'info>,
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}
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/// Transfers locked tokens from the source deposit entry to the target deposit entry.
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///
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/// The target deposit entry must have equal or longer lockup period, and be of a kind
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/// that is at least equally strict.
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///
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/// Note that this never transfers withdrawable tokens, only tokens that are still
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/// locked up.
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///
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/// The primary usecases are:
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/// - consolidating multiple small deposit entries into a single big one for cleanup
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/// - transfering a small part of a big "constant" lockup deposit entry into a "cliff"
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/// locked deposit entry to start the unlocking process (reset_lockup could only
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/// change the whole deposit entry to "cliff")
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pub fn internal_transfer(
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ctx: Context<InternalTransfer>,
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source_deposit_entry_index: u8,
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target_deposit_entry_index: u8,
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amount: u64,
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) -> Result<()> {
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let registrar = &ctx.accounts.registrar.load()?;
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let voter = &mut ctx.accounts.voter.load_mut()?;
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let curr_ts = registrar.clock_unix_timestamp();
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let source = voter.active_deposit_mut(source_deposit_entry_index)?;
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source.resolve_vesting(curr_ts)?;
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let source_seconds_left = source.lockup.seconds_left(curr_ts);
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let source_strictness = source.lockup.kind.strictness();
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let source_mint_idx = source.voting_mint_config_idx;
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// Allowing transfers from clawback-enabled deposits could be used to avoid
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// clawback by making proposal instructions target the wrong entry index.
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require!(!source.allow_clawback, InvalidChangeToClawbackDepositEntry);
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// Reduce source amounts
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require!(
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amount <= source.amount_initially_locked_native,
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InsufficientLockedTokens
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);
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source.amount_deposited_native = source.amount_deposited_native.checked_sub(amount).unwrap();
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source.amount_initially_locked_native =
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source.amount_initially_locked_native.saturating_sub(amount);
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// Check target compatibility
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let target = voter.active_deposit_mut(target_deposit_entry_index)?;
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target.resolve_vesting(curr_ts)?;
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require!(
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target.voting_mint_config_idx == source_mint_idx,
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InvalidMint
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);
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require!(
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target.lockup.seconds_left(curr_ts) >= source_seconds_left,
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InvalidLockupPeriod
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);
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require!(
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target.lockup.kind.strictness() >= source_strictness,
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InvalidLockupKind
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);
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// Add target amounts
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target.amount_deposited_native = target.amount_deposited_native.checked_add(amount).unwrap();
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target.amount_initially_locked_native = target
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.amount_initially_locked_native
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.checked_add(amount)
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.unwrap();
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Ok(())
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}
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