Come usare l'endpoint delle operazioni di analisi rpc

Question

Come usare l'endpoint delle operazioni di analisi rpc

8

178 2019-05-07

Sto cercando diinterrogare l'RPC analizzare l'endpoint dell'operazione

La documentazione RPC afferma solo che questoendpoint Parse operations e non riesco atrovareesempi di come utilizzarlo sul Web.

Ciò cheintendofare èfondamentalmenteinvertire ciò che forgeendpoint lofa per ottenereil JSON da un'operazione con codificaesadecimale.

Eccoilpassaggio che sto utilizzandoperinterrogare l'endpoint:

Operazione Forge

Query:

  POST
https://alphanet-node.tzscan.io/chains/main/blocks/head/helpers/forge/operations

Corpo:

  {
    "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK",
    "Contenuti": [
        {
            "kind": "transazione",
            "source": "tz1NfEiS2uJsX43vowNjau5pdqg3Nvy8whvc",
            "destinazione": "KT1Ec3jNXyxyA54nezwcjGDRoutECJCQjpya",
            "tariffa": "1274",
            "counter": "86610",
            "gas_limit": "10100",
            "storage_limit": "0",
            "importo": "5060726"
        }
    ]
}

Risposta:

  "92122a7e654cdff09e22a7be1b7d41bd279ffa197a0137e6fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa039d2a406fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa038cd2a40500a0410a04c410410a044104104104105f11d2f9400a0441d2f9400a04410f044d2a40510a0441d2f900410a0441d2f900a10441

Ora sto cercando diinvertire l'operazione diforgiatura

Query:

  https://alphanet-node.tzscan.io/chains/main/blocks/head/helpers/parse/operations

Corpo:

  {
    "operazioni": [
        {
            "dati": "92122a7e654cdff09e22a7be1b7d41bd279ffa197a0137e6fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa09d2a405fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa09d2a405f44add600a02700a039dd611d005fc040a039dd611d3800a03800a039dd611d3800a039dd611
            "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK"
        }
    ]
}

Risposta:

  [
    {
        "kind": "branch",
        "id": "proto.003-PsddFKi3.operation.cannot_parse"
    }
]

L'endpoint dell'operazione di analisi sta davverofacendo quello chemi aspetto? In caso affermativo,come dovrebbeessereinterrogato questoendpointperinvertire l'endpoint diforge?

I am trying to query the RPC parse operation endpoint

The RPC documentation only states that this endpoint Parse operations and I can't seem to find example of how to use it on the web.

What I am aim to do is basically reverse what the forge endpoint does in order to get the JSON from an hex encoded operation.

Here are the step I am using to query the endpoint:

Forge operation

Query:

POST
https://alphanet-node.tzscan.io/chains/main/blocks/head/helpers/forge/operations

Body:

{
    "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK",
    "contents": [
        {
            "kind": "transaction",
            "source": "tz1NfEiS2uJsX43vowNjau5pdqg3Nvy8whvc",
            "destination": "KT1Ec3jNXyxyA54nezwcjGDRoutECJCQjpya",
            "fee": "1274",
            "counter": "86610",
            "gas_limit": "10100",
            "storage_limit": "0",
            "amount": "5060726"
        }
    ]
}

Response:

"92122a7e654cdff09e22a7be1b7d41bd279ffa197a0137e6fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa09d2a405f44e00f6f0b40201420eaa410ac21addf427211cddd6115cba385a940000"

Now trying to reverse the forge operation

Query:

https://alphanet-node.tzscan.io/chains/main/blocks/head/helpers/parse/operations

Body:

{
    "operations": [
        {
            "data": "92122a7e654cdff09e22a7be1b7d41bd279ffa197a0137e6fea0d3ed3ce95fc00800002122d44d997e158c36c60649d198c4175dad425efa09d2a405f44e00f6f0b40201420eaa410ac21addf427211cddd6115cba385a940000",
            "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK"
        }
    ]
}

Response:

[
    {
        "kind": "branch",
        "id": "proto.003-PsddFKi3.operation.cannot_parse"
    }
]

Is the parse operation endpoint really doing what I expect? If so how should this endpoint need to be queried to reverse the forge endpoint?

1 risposta

voti

Tom · Accepted Answer · 2019-05-10

5

2019-05-10

Ilproblema è che/parse/operations si aspetta operazionifirmate.Puoi semplicemente aggiungere 64 zerobyte allafine:

 {
    "operations": [
        {
            "data": "0800002122d44d997e158c36c60649d198c4175dad425efa09d2a405f44e00f6f0b40201420eaa410ac21addf427211cddd6115cba385a94000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
            "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK"
        }
    ]
}

Tienipresente che seti fidi dell'output di questi RPC,sei fidarsi delnodo .

Nota anche che l'opzione "check_signature"per/parse/operationsnon haeffetto,comepuoi vedereimpostandola sutrue ...

The problem is that /parse/operations expects signed operations. You can just add 64 zero bytes to the end:

{
    "operations": [
        {
            "data": "0800002122d44d997e158c36c60649d198c4175dad425efa09d2a405f44e00f6f0b40201420eaa410ac21addf427211cddd6115cba385a94000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
            "branch": "BLpcXF8ADJbGuyUKNv7TypXRd5rqnoPn3PMqJLNBeRSr4VFeUuK"
        }
    ]
}

Be warned that if you trust the output of these RPCs, you are trusting the node.

Also notice that the "check_signature" option for /parse/operations has no effect, as you can see by setting it to true...

fonte
Tom

Potrestifornire unesempio completo di ciò,facendo unafalsificazione,un segno,quindi un'analisi?Anche dopo aver aggiuntogli 0,non riesco ancora afarfunzionare l'analisi.

Could you give a complete example of this, doing a forge, sign, then parse? Even after adding the 0's, I still cannot get parse to work.
- 0
- 2019-09-17
- utdrmac
Immagino che la domanda + rispostafornisca unesempio completo,potreiespandere la rispostain un secondomomento.Due rapidi controlli: hai aggiunto 128 zeri (=64 zerobyte)?Hai rimossoi primi 32byte (64 caratteri) daforge,quali sono l'hash di ramo/blocco?(Non l'homenzionatonellamia risposta.)

I guess the question + answer gives a complete example, I might expand the answer sometime later. Two quick checks: You added 128 zeros (= 64 zero bytes)? You stripped off the first 32 bytes (64 characters) from forge, which are the branch / block hash? (I failed to mention that in my answer.)
- 0
- 2019-09-18
- Tom
Gliesempiprecedenti riguardanotutti le operazioni ditrasferimentoe stavo cercando di decodificare un'approvazione.Sono unpo 'diversi.Sono statoin grado difarlofunzionare dopo aver letto altriposte codice ocaml.Grazie

The above examples all deal with transfer operations and I was trying to decode an endorsement. They are a bit different. I was able to get it working after reading some other posts and ocaml code. Thanks
- 0
- 2019-09-19
- utdrmac