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queryVerified does various sanity checks on the proof envelope

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Ethan Frey 2020-08-14 16:00:43 +02:00 committed by Simon Warta
parent a6e0cdee10
commit f70b3a83fa
1 changed files with 21 additions and 1 deletions
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22
packages/stargate/src/queries/queryclient.ts
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@ -1,5 +1,5 @@
/* eslint-disable no-dupe-class-members, @typescript-eslint/ban-types, @typescript-eslint/naming-convention */
import { toHex } from "@cosmjs/encoding";
import { toHex, fromAscii } from "@cosmjs/encoding";
import { Client as TendermintClient } from "@cosmjs/tendermint-rpc";
import { arrayContentEquals, assert, isNonNullObject } from "@cosmjs/utils";
@ -162,6 +162,26 @@ export class QueryClient {
}
assert(response.proof);
if (response.proof.ops.length !== 2) {
throw new Error(`Expected 2 proof ops, got ${response.proof.ops.length}. Are you using stargate?`);
}
const subProof = response.proof.ops[0];
if (subProof.type !== "ics23:iavl") {
throw new Error(`Sub-proof expected to be ics23:iavl, got "${subProof.type}`);
}
if (!arrayContentEquals(key, subProof.key)) {
throw new Error(`Proven key different than queried key.\nQuery: ${toHex(key)}\nProven: ${toHex(subProof.key)}`);
}
console.log(`Proof: ${toHex(subProof.data)}`);
const storeProof = response.proof.ops[1];
if (storeProof.type !== "ics23:simple") {
throw new Error(`Store-proof expected to be ics23:simple, got "${storeProof.type}`);
}
if (store !== fromAscii(storeProof.key)) {
throw new Error(`Proven store "${store}" different than queried store ${fromAscii(storeProof.key)}`);
}
// TODO: implement proof verification
// https://github.com/CosmWasm/cosmjs/issues/347