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Ix check #422

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Ix check #422

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31 changes: 14 additions & 17 deletions programs/cardinal-token-manager/src/instructions/permissioned/send.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,15 +8,18 @@ use anchor_spl::token::TokenAccount;
use anchor_spl::token::Transfer;
use anchor_spl::token::{self};
use mpl_token_metadata::utils::assert_derivation;
use solana_program::serialize_utils::read_u16;

use crate::errors::ErrorCode;
use crate::state::*;
use anchor_lang::prelude::*;
use solana_program::sysvar::instructions::get_instruction_relative;
use solana_program::sysvar::instructions::load_current_index_checked;
use solana_program::sysvar::instructions::load_instruction_at_checked;
use solana_program::sysvar::{self};
use spl_associated_token_account::get_associated_token_address;

///////////// CONSTANTS /////////////
pub const ALLOWED_PROGRAMS: [&str; 1] = ["ComputeBudget111111111111111111111111111111"];

#[derive(Accounts)]
pub struct SendCtx<'info> {
#[account(mut, constraint = token_manager.kind == TokenManagerKind::Permissioned as u8 && token_manager.state == TokenManagerState::Claimed as u8 @ ErrorCode::InvalidTokenManagerState)]
Expand Down Expand Up @@ -54,21 +57,15 @@ pub struct SendCtx<'info> {
}

pub fn handler(ctx: Context<SendCtx>) -> Result<()> {
let instructions_account_info = ctx.accounts.instructions.to_account_info();
// check instruction is first
let current_ix_index = load_current_index_checked(&instructions_account_info).expect("Error computing current index");
if current_ix_index != 0_u16 {
return Err(error!(ErrorCode::InstructionsDisallowed));
}
// check no cpi
let current_ix = get_instruction_relative(0, &instructions_account_info);
if current_ix.is_ok() && current_ix?.program_id != *ctx.program_id {
return Err(error!(ErrorCode::NoCPIAllowed));
}
// check no next instruction
let next_ix = get_instruction_relative(1, &instructions_account_info);
if next_ix.is_ok() {
return Err(error!(ErrorCode::InstructionsDisallowed));
// check allowed programs
let instruction_sysvar = ctx.accounts.instructions.try_borrow_data()?;
let mut current: usize = 0;
let num_instructions = read_u16(&mut current, &instruction_sysvar).expect("Invalid instruction");
for i in 0..num_instructions {
let ix = load_instruction_at_checked(i.into(), &ctx.accounts.instructions.to_account_info()).expect("Failed to get instruction");
if ix.program_id != *ctx.program_id && !ALLOWED_PROGRAMS.contains(&&ix.program_id.to_string()[..]) {
return Err(error!(ErrorCode::InstructionsDisallowed));
}
}

// update token manager recipient token account
Expand Down