ethr-status-registry
Version:
Verifiable Credential status resolver using an ethereum contract as registry
128 lines • 7.31 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.EthrCredentialRevoker = void 0;
var configuration_1 = require("./configuration");
var EthrStatusRegistry_1 = require("./EthrStatusRegistry");
var ExternalSignerProvider_1 = require("./ExternalSignerProvider");
var did_jwt_1 = require("did-jwt");
var contracts_1 = require("@ethersproject/contracts");
var strings_1 = require("@ethersproject/strings");
var keccak256_1 = require("@ethersproject/keccak256");
var revocation_registry_1 = require("revocation-registry");
// experimental API, expect breaking changes
var EthrCredentialRevoker = /** @class */ (function () {
function EthrCredentialRevoker(conf) {
this.networks = {};
this.networks = configuration_1.configureResolverWithNetworks(conf);
}
EthrCredentialRevoker.prototype.revoke = function (token, ethSign, txOptions) {
return __awaiter(this, void 0, void 0, function () {
var decoded, statusEntry, registryCoord, network, registryAddress, web3Provider, provider, registryContract, tokenBytes, hash, _a, gasPrice, gasLimit, nonce, txOverrides, result, e_1, err;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
decoded = did_jwt_1.decodeJWT(token);
statusEntry = decoded.payload.credentialStatus;
if (!statusEntry) {
throw new Error('credential_not_revocable; no status field embedded');
}
if (statusEntry.type !== EthrStatusRegistry_1.methodName) {
throw new Error('unsupported_revocation_method; only EthrStatusRegistry2019 is supported');
}
registryCoord = statusEntry.id.split(':');
if (registryCoord.length !== 2) {
throw new Error('credential_not_revocable; malformed `id` field in credential status entry');
}
network = registryCoord[0];
registryAddress = registryCoord[1];
web3Provider = this.networks[network];
if (!web3Provider) {
throw new Error("credential_not_revocable; no known way to access network(" + network + ") used in credential status entry. Check your providerConfig configuration");
}
provider = web3Provider;
if (ethSign) {
provider = new ExternalSignerProvider_1.ExternalSignerProvider(ethSign, provider);
}
registryContract = new contracts_1.Contract(registryAddress, revocation_registry_1.abi, provider);
tokenBytes = strings_1.toUtf8Bytes(token);
hash = keccak256_1.keccak256(tokenBytes);
_a = __assign({}, txOptions), gasPrice = _a.gasPrice, gasLimit = _a.gasLimit, nonce = _a.nonce;
txOverrides = {
gasLimit: gasLimit || 44309,
gasPrice: gasPrice || 1000000000,
nonce: nonce
};
_b.label = 1;
case 1:
_b.trys.push([1, 3, , 4]);
return [4 /*yield*/, registryContract.revoke(hash, txOverrides)];
case 2:
result = _b.sent();
return [2 /*return*/, result.hash];
case 3:
e_1 = _b.sent();
if (e_1.transaction && /VM Exception while processing transaction: revert/.test(e_1.message)) {
err = new Error('credential_already_revoked');
err.cause = e_1;
throw err;
}
else {
throw e_1;
}
return [3 /*break*/, 4];
case 4: return [2 /*return*/];
}
});
});
};
return EthrCredentialRevoker;
}());
exports.EthrCredentialRevoker = EthrCredentialRevoker;
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