Inputs do not conform to this spec or are otherwise invalid

[MartinSchere]

I'm getting this error when trying to sign the simplest transaction:

cardano-cli transaction build-raw \
    --tx-in 88d9225ff5d46b0efcd56dda20f2ea93b0a5fa232e7f70ab7d626746075a20d1#0 \
    --tx-out addr_test1qzymym7qc47kx65sjhntdl2prq85rj5v8mzv5pvyffnntz4el5zqnamef3yt2kprt866p5f38w6um6642lvzrj80d0xstnnmxq+10 \
    --tx-out addr_test1qzjlc05tyyw264wy7m4u7np5yqdwglks0xhu6765cl4qex9r9kvav4hmznru9px9n7cpa2hmmv4593eegve3t834xppqwskp4t+999823269 \
    --invalid-hereafter 369400 \
    --fee 176721 \
    --out-file tx.raw

It's an alonzo-era transaction

[MartinSchere]

When doing the following:

const cborHex =
      "83a4008182582088d9225ff5d46b0efcd56dda20f2ea93b0a5fa232e7f70ab7d626746075a20d10001828258390089b26fc0c57d636a9095e6b6fd41180f41ca8c3ec4ca05844a67358ab9fd0409f7794c48b5582359f5a0d1313bb5cdeb5557d821c8ef6bcd0a82583900a5fc3e8b211cad55c4f6ebcf4c34201ae47ed079afcd7b54c7ea0c98a32d99d656fb14c7c284c59fb01eaafbdb2b42c7394333159e3530421a3b9817a5021a0002b251031a0005a2f89ffff6";

    const rawTx = CardanoWasm.Transaction.from_bytes(
      Buffer.from(cborHex, "hex")
    );

It gives the error:

Uncaught (in promise) Deserialization failed in Transaction.witness_set.TransactionWitnessSet because: Invalid cbor: not the right type, expected Map' byte received Array'.

[alessandrokonrad]

The raw transaction coming from the cardano-cli does not follow the ledger specs actually. That's why Nami is complaining or better said the serialization-lib. You need to transform the cbor code a little bit. Get rid of the empty arrays at the top and replace them with a map and remove the bool in case there is one.

[MartinSchere]

OK, so it's possible to build an alonzo-era transaction and sign it with Nami?

I'm looking for a way to enable smart contracts in my dApp without waiting for the PAB release

[alessandrokonrad]

Yes it's possible. I'll release a new Nami version soon, that also handles the additional bool in the transaction from the cardano-cli

[MartinSchere]

Yes, given that the PAB will be here in a few weeks, should the link handler be implemented in Nami? Or the dApp connector is made with the serialization lib?

[alessandrokonrad]

Yeah Nami is fully built on top of the serialization-lib. I currently use a customized version of the serialization-lib, which follows the latest specs: https://github.com/input-output-hk/cardano-ledger-specs/blob/master/eras/alonzo/test-suite/cddl-files/alonzo.cddl
The bool thing is not in the latest official release yet. The new Nami version should come these days. It's version 2.0.0
It also exposes a new endpoint called getCollateral

[MartinSchere]

What is the bool thing about?

[MartinSchere]

Oh, and where can I contact you about SpaceBudz? I tried to reach you on Discord, but you must have your dms off.

[alessandrokonrad]

What is the bool thing about?

I think it's an extra flag that tells if the contract evaluates to true or false. I don't know exactly the purpose of it.

[alessandrokonrad]

Oh, and where can I contact you about SpaceBudz? I tried to reach you on Discord, but you must have your dms off.

Yeah I'm trying to avoid some platforms atm. You can reach me on telegram @berry_ales

[MartinSchere]

I created a toSpec helper function and it worked:

  public toSpec(txFilePath: string): string {
    const file = JSON.parse(readFileSync(txFilePath, 'utf-8'));

    const { cborHex } = file;
    const decoded = cbor.decode(cborHex);
    const newCborDecoded = [];

    for (let i of decoded) {
      if (Array.isArray(i)) {
        newCborDecoded.push(new Map());
      } else if (typeof i !== 'boolean') {
        newCborDecoded.push(i);
      }
    }
    const result = cbor.encode(newCborDecoded).toString('hex');
    return result;
  }

[ElGatoLoco]

I created a toSpec helper function and it worked:

  public toSpec(txFilePath: string): string {
    const file = JSON.parse(readFileSync(txFilePath, 'utf-8'));

    const { cborHex } = file;
    const decoded = cbor.decode(cborHex);
    const newCborDecoded = [];

    for (let i of decoded) {
      if (Array.isArray(i)) {
        newCborDecoded.push(new Map());
      } else if (typeof i !== 'boolean') {
        newCborDecoded.push(i);
      }
    }
    const result = cbor.encode(newCborDecoded).toString('hex');
    return result;
  }

This is all good until you actually have some data in those arrays that needs to be transformed. Did you by any chance come up with a way to transform arrays to maps properly?

[MartinSchere]

No, I migrated to the serialization lib because the interaction was easier.