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155 | /* This file is part of DarkFi (https://dark.fi)
*
* Copyright (C) 2020-2025 Dyne.org foundation
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
use darkfi_sdk::{
crypto::{pasta_prelude::*, ContractId, PublicKey},
dark_tree::DarkLeaf,
error::{ContractError, ContractResult},
msg,
pasta::pallas,
wasm, ContractCall,
};
use darkfi_serial::{deserialize, serialize, Encodable};
use crate::{
blockwindow,
error::DaoError,
model::{DaoExecParams, DaoExecUpdate, DaoProposalMetadata, VecAuthCallCommit},
DAO_CONTRACT_DB_PROPOSAL_BULLAS, DAO_CONTRACT_ZKAS_DAO_EARLY_EXEC_NS,
DAO_CONTRACT_ZKAS_DAO_EXEC_NS,
};
/// `get_metdata` function for `Dao::Exec`
pub(crate) fn dao_exec_get_metadata(
_cid: ContractId,
call_idx: usize,
calls: Vec<DarkLeaf<ContractCall>>,
) -> Result<Vec<u8>, ContractError> {
let self_ = &calls[call_idx];
let params: DaoExecParams = deserialize(&self_.data.data[1..])?;
// Public inputs for the ZK proofs we have to verify
let mut zk_public_inputs: Vec<(String, Vec<pallas::Base>)> = vec![];
// Public keys for the transaction signatures we have to verify
let signature_pubkeys: Vec<PublicKey> = vec![params.signature_public];
let current_blockwindow =
blockwindow(wasm::util::get_verifying_block_height()?, wasm::util::get_block_target()?);
let blind_vote = params.blind_total_vote;
let yes_vote_coords = blind_vote.yes_vote_commit.to_affine().coordinates().unwrap();
let all_vote_coords = blind_vote.all_vote_commit.to_affine().coordinates().unwrap();
// Grab proof namespace to use, based on early execution flag
let proof_namespace = match params.early_exec {
true => DAO_CONTRACT_ZKAS_DAO_EARLY_EXEC_NS.to_string(),
false => DAO_CONTRACT_ZKAS_DAO_EXEC_NS.to_string(),
};
zk_public_inputs.push((
proof_namespace,
vec![
params.proposal_bulla.inner(),
params.proposal_auth_calls.commit(),
pallas::Base::from(current_blockwindow),
*yes_vote_coords.x(),
*yes_vote_coords.y(),
*all_vote_coords.x(),
*all_vote_coords.y(),
params.signature_public.x(),
params.signature_public.y(),
],
));
// Serialize everything gathered and return it
let mut metadata = vec![];
zk_public_inputs.encode(&mut metadata)?;
signature_pubkeys.encode(&mut metadata)?;
Ok(metadata)
}
/// `process_instruction` function for `Dao::Exec`
pub(crate) fn dao_exec_process_instruction(
cid: ContractId,
call_idx: usize,
calls: Vec<DarkLeaf<ContractCall>>,
) -> Result<Vec<u8>, ContractError> {
let self_ = &calls[call_idx];
let params: DaoExecParams = deserialize(&self_.data.data[1..])?;
///////////////////////////////////////////////////
// 1. Verify the correct calling formats match the proposal
///////////////////////////////////////////////////
// Check children of DAO exec match the specified calls
if params.proposal_auth_calls.len() != self_.children_indexes.len() {
return Err(DaoError::ExecCallWrongChildCallsLen.into())
}
for (auth_call, child_idx) in
params.proposal_auth_calls.iter().zip(self_.children_indexes.iter())
{
let child_call = &calls[*child_idx].data;
// We are allowing 2nd tier child calls here since it
// should be allowed to make recursive calls.
// Auth modules should check the direct parent is DAO::exec().
// Doing anything else is potentially risky.
let contract_id = child_call.contract_id;
let function_code = child_call.data[0];
// Check they match the auth call spec
if contract_id != auth_call.contract_id || function_code != auth_call.function_code {
msg!("[Dao::Exec] Error: wrong child call");
return Err(DaoError::ExecCallWrongChildCall.into())
}
}
///////////////////////////////////////////////////
// 2. Verify the correct voting
///////////////////////////////////////////////////
// Get the ProposalVote from DAO state
let proposal_db = wasm::db::db_lookup(cid, DAO_CONTRACT_DB_PROPOSAL_BULLAS)?;
let Some(data) = wasm::db::db_get(proposal_db, &serialize(¶ms.proposal_bulla))? else {
msg!("[Dao::Exec] Error: Proposal {:?} not found", params.proposal_bulla);
return Err(DaoError::ProposalNonexistent.into())
};
let proposal: DaoProposalMetadata = deserialize(&data)?;
// Check yes_vote commit and all_vote_commit are the same as in BlindAggregateVote
if proposal.vote_aggregate.yes_vote_commit != params.blind_total_vote.yes_vote_commit ||
proposal.vote_aggregate.all_vote_commit != params.blind_total_vote.all_vote_commit
{
return Err(DaoError::VoteCommitMismatch.into())
}
// Create state update
let update = DaoExecUpdate { proposal_bulla: params.proposal_bulla };
Ok(serialize(&update))
}
/// `process_update` function for `Dao::Exec`
pub(crate) fn dao_exec_process_update(cid: ContractId, update: DaoExecUpdate) -> ContractResult {
// Remove proposal from db
let proposal_vote_db = wasm::db::db_lookup(cid, DAO_CONTRACT_DB_PROPOSAL_BULLAS)?;
wasm::db::db_del(proposal_vote_db, &serialize(&update.proposal_bulla))?;
Ok(())
}
|