Merge pull request #3296 from Emurgo/feat/YOEXT-799/cip95-signTx

connector signTx witnesses CIP95 certificates and tx fields

packages/yoroi-extension/chrome/extension/connector/api.js

@@ -479,6 +479,12 @@ export async function connectorGetUnusedAddresses(wallet: PublicDeriver<>): Prom
 export async function connectorGetDRepKey(
   wallet: PublicDeriver<>,
 ): Promise<string> {
+  return (await _getDRepKeyAndAddressing(wallet))[0].to_hex();
+}
+
+async function _getDRepKeyAndAddressing(
+  wallet: PublicDeriver<>,
+): Promise<[RustModule.WalletV4.PublicKey, Addressing]> {
   const withPubKey = asGetPublicKey(wallet);
   if (withPubKey == null) {
     throw new Error('Unable to get public key from the wallet');
@@ -491,7 +497,7 @@ export async function connectorGetDRepKey(
   const publicKey = RustModule.WalletV4.Bip32PublicKey.from_bytes(
     Buffer.from(publicKeyResp.Hash, 'hex')
   );
-  const dRepKey = derivePublicByAddressing({
+  const addressing = {
     addressing: {
       path: [
         WalletTypePurpose.CIP1852,
@@ -502,12 +508,16 @@ export async function connectorGetDRepKey(
       ],
       startLevel: Bip44DerivationLevels.PURPOSE.level,
     },
+  };
+
+  const dRepKey = derivePublicByAddressing({
+    ...addressing,
     startingFrom: {
       level: withLevels.getParent().getPublicDeriverLevel(),
       key: publicKey,
     },
   }).to_raw_key();
-  return dRepKey.to_hex();
+  return [dRepKey, addressing];
 }
 
 export async function connectorGetStakeKey(
@@ -797,6 +807,109 @@ function getTxRequiredSigningKeys(
   return set;
 }
 
+function getCip95RequiredSignKeys(
+  txBody: RustModule.WalletV4.TransactionBody,
+): Set<string> {
+  const result: Set<string> = new Set();
+
+  const certs = txBody.certs();
+  if (certs) {
+    for (let i = 0; i < certs.len(); i++) {
+      const cert = certs.get(i);
+      if (!cert) {
+        throw new Error('unexpectedly missing certificate');
+      }
+      const stakeDeregistration = cert.as_stake_deregistration();
+      if (stakeDeregistration) {
+        const keyHash = stakeDeregistration.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const stakeDelegation = cert.as_stake_delegation();
+      if (stakeDelegation) {
+        const keyHash = stakeDelegation.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const voteDelegation = cert.as_vote_delegation();
+      if (voteDelegation) {
+        const keyHash = voteDelegation.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const stakeVoteDelegation = cert.as_stake_and_vote_delegation();
+      if (stakeVoteDelegation) {
+        const keyHash = stakeVoteDelegation.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const stakeRegDelegation = cert.as_stake_registration_and_delegation();
+      if (stakeRegDelegation) {
+        const keyHash = stakeRegDelegation.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const voteRegDelegation = cert.as_vote_registration_and_delegation();
+      if (voteRegDelegation) {
+        const keyHash = voteRegDelegation.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const stakeRegVoteDeletion = cert.as_stake_vote_registration_and_delegation();
+      if (stakeRegVoteDeletion) {
+        const keyHash = stakeRegVoteDeletion.stake_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const unregDrep = cert.as_drep_deregistration();
+      if (unregDrep) {
+        const keyHash = unregDrep.voting_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+      const updateDrep = cert.as_drep_update();
+      if (updateDrep) {
+        const keyHash = updateDrep.voting_credential().to_keyhash();
+        if (keyHash) {
+          result.add(keyHash.to_hex());
+        }
+        continue;
+      }
+    }
+  }
+
+  const voters = txBody.voting_procedures()?.get_voters();
+  if (voters) {
+    for (let i = 0; i < voters.len(); i++) {
+      const voter = voters.get(i);
+      if (!voter) {
+        throw new Error('unexpectedly missing voter');
+      }
+      const keyHash = voter.to_drep_cred()?.to_keyhash();
+      if (keyHash) {
+        result.add(keyHash.to_hex());
+      }
+    }
+  }
+  return result;
+}
+
 /**
  * Returns HEX of a serialised witness set
  */
@@ -853,9 +966,11 @@ async function __connectorSignCardanoTx(
 
   const requiredTxSignKeys = getTxRequiredSigningKeys(txBody);
   const requiredScriptSignKeys = getScriptRequiredSigningKeys(witnessSet);
+  const requiredCip95SignKeys = getCip95RequiredSignKeys(txBody);
   const totalAdditionalRequiredSignKeys = new Set<string>([
     ...requiredTxSignKeys,
     ...requiredScriptSignKeys,
+    ...requiredCip95SignKeys,
   ]);
 
   console.log('totalAdditionalRequiredSignKeys', [...totalAdditionalRequiredSignKeys]);
@@ -931,6 +1046,15 @@ async function __connectorSignCardanoTx(
         otherRequiredSigners.push({ address, addressing });
       }
     }
+    const [ drepKey, addressing ] = await _getDRepKeyAndAddressing(publicDeriver);
+    const drepCred = drepKey.hash().to_hex();
+    if (totalAdditionalRequiredSignKeys.has(drepCred)) {
+      const address = RustModule.WalletV4.RewardAddress.new(
+        0, // strictly speaking should use `ChainNetworkId` but doesn't matter
+        RustModule.WalletV4.Credential.from_keyhash(drepKey.hash()),
+      ).to_address().to_hex();
+      otherRequiredSigners.push({ address, ...addressing });
+    }
     console.log('otherRequiredSigners', [...otherRequiredSigners]);
   }