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chore: reject compress for mints with restricted extensions in build_mint_extension_cache #2240

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Merged
ananas-block merged 3 commits into from
Feb 10, 2026
Merged

chore: reject compress for mints with restricted extensions in build_mint_extension_cache #2240

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d338631
chore: reject compress for mints with restricted extensions in mint c…
ananas-block Feb 5, 2026
1e38efb
Update programs/compressed-token/program/src/compressed_token/transfe…
ananas-block Feb 6, 2026
d70575f
fix: format else-if condition for lint
ananas-block Feb 9, 2026
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14 changes: 10 additions & 4 deletions programs/compressed-token/program/src/compressed_token/transfer2/check_extensions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -118,10 +118,10 @@ pub fn build_mint_extension_cache<'a>(

// SAFETY: mint_index was just inserted above if not already present
let checks = cache.get_by_key(&mint_index).unwrap();
// CompressAndClose with restricted extensions requires CompressedOnly output.
// Compress/Decompress don't need additional validation here:
// - Compress: blocked by check_mint_extensions when outputs exist
// - Decompress: no check it restores existing state
// Restricted extensions handling:
// - CompressAndClose: requires CompressedOnly output to preserve extension state
// - Compress: blocked - cannot compress tokens with restricted extensions
// - Decompress: allowed - restores existing state
if checks.has_restricted_extensions && compression.mode.is_compress_and_close() {
let output_idx = compression.get_compressed_token_account_index()?;
let has_compressed_only = inputs
Expand All @@ -137,6 +137,12 @@ pub fn build_mint_extension_cache<'a>(
msg!("Mint has restricted extensions - CompressedOnly output required");
return Err(ErrorCode::CompressAndCloseMissingCompressedOnlyExtension.into());
}
} else if checks.has_restricted_extensions
&& deny_restricted_extensions
&& !compression.mode.is_compress_and_close()
{
msg!("Mint has restricted extensions - regular compress not allowed");
return Err(ErrorCode::MintHasRestrictedExtensions.into());
}
}
}
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