@logsn/arweave/node/silo.js

Arweave JS client library

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SiloResource = void 0;
const ArweaveUtils = __importStar(require("./lib/utils"));
class Silo {
    api;
    crypto;
    transactions;
    constructor(api, crypto, transactions) {
        this.api = api;
        this.crypto = crypto;
        this.transactions = transactions;
    }
    async get(siloURI) {
        if (!siloURI) {
            throw new Error(`No Silo URI specified`);
        }
        const resource = await this.parseUri(siloURI);
        const ids = await this.transactions.search("Silo-Name", resource.getAccessKey());
        if (ids.length == 0) {
            throw new Error(`No data could be found for the Silo URI: ${siloURI}`);
        }
        const transaction = await this.transactions.get(ids[0]);
        if (!transaction) {
            throw new Error(`No data could be found for the Silo URI: ${siloURI}`);
        }
        const encrypted = transaction.get("data", { decode: true, string: false });
        return this.crypto.decrypt(encrypted, resource.getEncryptionKey());
    }
    async readTransactionData(transaction, siloURI) {
        if (!siloURI) {
            throw new Error(`No Silo URI specified`);
        }
        const resource = await this.parseUri(siloURI);
        const encrypted = transaction.get("data", { decode: true, string: false });
        return this.crypto.decrypt(encrypted, resource.getEncryptionKey());
    }
    async parseUri(siloURI) {
        const parsed = siloURI.match(/^([a-z0-9-_]+)\.([0-9]+)/i);
        if (!parsed) {
            throw new Error(`Invalid Silo name, must be a name in the format of [a-z0-9]+.[0-9]+, e.g. 'bubble.7'`);
        }
        const siloName = parsed[1];
        const hashIterations = Math.pow(2, parseInt(parsed[2]));
        const digest = await this.hash(ArweaveUtils.stringToBuffer(siloName), hashIterations);
        const accessKey = ArweaveUtils.bufferTob64(digest.slice(0, 15));
        const encryptionkey = await this.hash(digest.slice(16, 31), 1);
        return new SiloResource(siloURI, accessKey, encryptionkey);
    }
    async hash(input, iterations) {
        let digest = await this.crypto.hash(input);
        for (let count = 0; count < iterations - 1; count++) {
            digest = await this.crypto.hash(digest);
        }
        return digest;
    }
}
exports.default = Silo;
class SiloResource {
    uri;
    accessKey;
    encryptionKey;
    constructor(uri, accessKey, encryptionKey) {
        this.uri = uri;
        this.accessKey = accessKey;
        this.encryptionKey = encryptionKey;
    }
    getUri() {
        return this.uri;
    }
    getAccessKey() {
        return this.accessKey;
    }
    getEncryptionKey() {
        return this.encryptionKey;
    }
}
exports.SiloResource = SiloResource;
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