@atproto/did/dist/methods/web.js

DID resolution and verification library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DID_WEB_PREFIX = void 0;
exports.isDidWeb = isDidWeb;
exports.asDidWeb = asDidWeb;
exports.assertDidWeb = assertDidWeb;
exports.didWebToUrl = didWebToUrl;
exports.urlToDidWeb = urlToDidWeb;
const did_error_js_1 = require("../did-error.js");
const did_js_1 = require("../did.js");
exports.DID_WEB_PREFIX = `did:web:`;
/**
 * This function checks if the input is a valid Web DID, as per DID spec.
 */
function isDidWeb(input) {
    // Optimization: make cheap checks first
    if (typeof input !== 'string')
        return false;
    if (!input.startsWith(exports.DID_WEB_PREFIX))
        return false;
    if (input.charAt(exports.DID_WEB_PREFIX.length) === ':')
        return false;
    try {
        didWebToUrl(input);
        return true;
    }
    catch {
        return false;
    }
}
function asDidWeb(input) {
    assertDidWeb(input);
    return input;
}
function assertDidWeb(input) {
    if (typeof input !== 'string') {
        throw new did_error_js_1.InvalidDidError(typeof input, `DID must be a string`);
    }
    if (!input.startsWith(exports.DID_WEB_PREFIX)) {
        throw new did_error_js_1.InvalidDidError(input, `Invalid did:web prefix`);
    }
    if (input.charAt(exports.DID_WEB_PREFIX.length) === ':') {
        throw new did_error_js_1.InvalidDidError(input, 'did:web MSID must not start with a colon');
    }
    void didWebToUrl(input);
}
function didWebToUrl(did) {
    // Make sure every char is valid (per DID spec)
    (0, did_js_1.assertDidMsid)(did, exports.DID_WEB_PREFIX.length);
    const hostIdx = exports.DID_WEB_PREFIX.length;
    const pathIdx = did.indexOf(':', hostIdx);
    const host = pathIdx === -1 ? did.slice(hostIdx) : did.slice(hostIdx, pathIdx);
    const path = pathIdx === -1 ? '' : did.slice(pathIdx);
    try {
        const url = new URL(`https://${host.replaceAll('%3A', ':')}${path.replaceAll(':', '/')}`);
        if (url.hostname === 'localhost') {
            url.protocol = 'http:';
        }
        return url;
    }
    catch (cause) {
        throw new did_error_js_1.InvalidDidError(did, 'Invalid Web DID', cause);
    }
}
function urlToDidWeb(url) {
    const port = url.port ? `%3A${url.port}` : '';
    const path = url.pathname === '/' ? '' : url.pathname.replaceAll('/', ':');
    return `did:web:${url.hostname}${port}${path}`;
}
//# sourceMappingURL=web.js.map