"use strict";
/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Nathan Rajlich, Félicien François, Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
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    if (k2 === undefined) k2 = k;
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      desc = { enumerable: true, get: function() { return m[k]; } };
    }
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}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
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var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
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        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.testCertificates = exports.toLogString = exports.resetCaches = exports.loadSystemCertificates = exports.createTlsPatch = exports.createNetPatch = exports.createHttpPatch = exports.createProxyResolver = exports.LogLevel = void 0;
const net = __importStar(require("net"));
const tls = __importStar(require("tls"));
const nodeurl = __importStar(require("url"));
const os = __importStar(require("os"));
const fs = __importStar(require("fs"));
const cp = __importStar(require("child_process"));
const crypto = __importStar(require("crypto"));
const agent_1 = __importStar(require("./agent"));
var LogLevel;
(function (LogLevel) {
    LogLevel[LogLevel["Trace"] = 0] = "Trace";
    LogLevel[LogLevel["Debug"] = 1] = "Debug";
    LogLevel[LogLevel["Info"] = 2] = "Info";
    LogLevel[LogLevel["Warning"] = 3] = "Warning";
    LogLevel[LogLevel["Error"] = 4] = "Error";
    LogLevel[LogLevel["Critical"] = 5] = "Critical";
    LogLevel[LogLevel["Off"] = 6] = "Off";
})(LogLevel || (exports.LogLevel = LogLevel = {}));
const maxCacheEntries = 5000; // Cache can grow twice that much due to 'oldCache'.
function createProxyResolver(params) {
    const { getProxyURL, log, getLogLevel, proxyResolveTelemetry: proxyResolverTelemetry, useHostProxy, env } = params;
    let envProxy = proxyFromConfigURL(env.https_proxy || env.HTTPS_PROXY || env.http_proxy || env.HTTP_PROXY); // Not standardized.
    let envNoProxy = noProxyFromEnv(env.no_proxy || env.NO_PROXY); // Not standardized.
    let cacheRolls = 0;
    let oldCache = new Map();
    let cache = new Map();
    function getCacheKey(url) {
        // Expecting proxies to usually be the same per scheme://host:port. Assuming that for performance.
        return nodeurl.format(Object.assign(Object.assign({}, url), { pathname: undefined, search: undefined, hash: undefined }));
    }
    function getCachedProxy(key) {
        let proxy = cache.get(key);
        if (proxy) {
            return proxy;
        }
        proxy = oldCache.get(key);
        if (proxy) {
            oldCache.delete(key);
            cacheProxy(key, proxy);
        }
        return proxy;
    }
    function cacheProxy(key, proxy) {
        cache.set(key, proxy);
        if (cache.size >= maxCacheEntries) {
            oldCache = cache;
            cache = new Map();
            cacheRolls++;
            log.debug('ProxyResolver#cacheProxy cacheRolls', cacheRolls);
        }
    }
    let timeout;
    let count = 0;
    let duration = 0;
    let errorCount = 0;
    let cacheCount = 0;
    let envCount = 0;
    let settingsCount = 0;
    let localhostCount = 0;
    let envNoProxyCount = 0;
    let configNoProxyCount = 0;
    let results = [];
    function logEvent() {
        timeout = undefined;
        proxyResolverTelemetry({ count, duration, errorCount, cacheCount, cacheSize: cache.size, cacheRolls, envCount, settingsCount, localhostCount, envNoProxyCount, configNoProxyCount, results });
        count = duration = errorCount = cacheCount = envCount = settingsCount = localhostCount = envNoProxyCount = configNoProxyCount = 0;
        results = [];
    }
    function resolveProxy(flags, req, opts, url, callback) {
        if (!timeout) {
            timeout = setTimeout(logEvent, 10 * 60 * 1000);
        }
        const stackText = ''; // getLogLevel() === LogLevel.Trace ? '\n' + new Error('Error for stack trace').stack : '';
        addCertificatesV1(params, flags.addCertificatesV1, opts, () => {
            useProxySettings(useHostProxy, flags.useProxySettings, req, opts, url, stackText, callback);
        });
    }
    function useProxySettings(useHostProxy, useProxySettings, req, opts, url, stackText, callback) {
        if (!useProxySettings) {
            callback('DIRECT');
            return;
        }
        const parsedUrl = nodeurl.parse(url); // Coming from Node's URL, sticking with that.
        const hostname = parsedUrl.hostname;
        if (hostname === 'localhost' || hostname === '127.0.0.1' || hostname === '::1' || hostname === '::ffff:127.0.0.1') {
            localhostCount++;
            callback('DIRECT');
            log.debug('ProxyResolver#resolveProxy localhost', url, 'DIRECT', stackText);
            return;
        }
        const { secureEndpoint } = opts;
        const defaultPort = secureEndpoint ? 443 : 80;
        // if there are any config entries present then env variables are ignored
        let noProxyConfig = params.getNoProxyConfig ? params.getNoProxyConfig() : [];
        if (noProxyConfig.length) {
            let configNoProxy = noProxyFromConfig(noProxyConfig); // Not standardized.
            if (typeof hostname === 'string' && configNoProxy(hostname, String(parsedUrl.port || defaultPort))) {
                configNoProxyCount++;
                callback('DIRECT');
                log.debug('ProxyResolver#resolveProxy configNoProxy', url, 'DIRECT', stackText);
                return;
            }
        }
        else {
            if (typeof hostname === 'string' && envNoProxy(hostname, String(parsedUrl.port || defaultPort))) {
                envNoProxyCount++;
                callback('DIRECT');
                log.debug('ProxyResolver#resolveProxy envNoProxy', url, 'DIRECT', stackText);
                return;
            }
        }
        let settingsProxy = proxyFromConfigURL(getProxyURL());
        if (settingsProxy) {
            settingsCount++;
            callback(settingsProxy);
            log.debug('ProxyResolver#resolveProxy settings', url, settingsProxy, stackText);
            return;
        }
        if (envProxy) {
            envCount++;
            callback(envProxy);
            log.debug('ProxyResolver#resolveProxy env', url, envProxy, stackText);
            return;
        }
        const key = getCacheKey(parsedUrl);
        const proxy = getCachedProxy(key);
        if (proxy) {
            cacheCount++;
            collectResult(results, proxy, parsedUrl.protocol === 'https:' ? 'HTTPS' : 'HTTP', req);
            callback(proxy);
            log.debug('ProxyResolver#resolveProxy cached', url, proxy, stackText);
            return;
        }
        if (!useHostProxy) {
            callback('DIRECT');
            log.debug('ProxyResolver#resolveProxy unconfigured', url, 'DIRECT', stackText);
            return;
        }
        const start = Date.now();
        params.resolveProxy(url) // Use full URL to ensure it is an actually used one.
            .then(proxy => {
            if (proxy) {
                cacheProxy(key, proxy);
                collectResult(results, proxy, parsedUrl.protocol === 'https:' ? 'HTTPS' : 'HTTP', req);
            }
            callback(proxy);
            log.debug('ProxyResolver#resolveProxy', url, proxy, stackText);
        }).then(() => {
            count++;
            duration = Date.now() - start + duration;
        }, err => {
            errorCount++;
            const fallback = cache.values().next().value; // fall back to any proxy (https://github.com/microsoft/vscode/issues/122825)
            callback(fallback);
            log.error('ProxyResolver#resolveProxy', fallback, toErrorMessage(err), stackText);
        });
    }
    return resolveProxy;
}
exports.createProxyResolver = createProxyResolver;
function collectResult(results, resolveProxy, connection, req) {
    const proxy = resolveProxy ? String(resolveProxy).trim().split(/\s+/, 1)[0] : 'EMPTY';
    req.on('response', res => {
        const code = `HTTP_${res.statusCode}`;
        const result = findOrCreateResult(results, proxy, connection, code);
        result.count++;
    });
    req.on('error', err => {
        const code = err && typeof err.code === 'string' && err.code || 'UNKNOWN_ERROR';
        const result = findOrCreateResult(results, proxy, connection, code);
        result.count++;
    });
}
function findOrCreateResult(results, proxy, connection, code) {
    for (const result of results) {
        if (result.proxy === proxy && result.connection === connection && result.code === code) {
            return result;
        }
    }
    const result = { proxy, connection, code, count: 0 };
    results.push(result);
    return result;
}
function proxyFromConfigURL(configURL) {
    if (!configURL) {
        return undefined;
    }
    const url = (configURL || '').trim();
    const i = url.indexOf('://');
    if (i === -1) {
        return undefined;
    }
    const scheme = url.substr(0, i).toLowerCase();
    const proxy = url.substr(i + 3);
    if (scheme === 'http') {
        return 'PROXY ' + proxy;
    }
    else if (scheme === 'https') {
        return 'HTTPS ' + proxy;
    }
    else if (scheme === 'socks' || scheme === 'socks5' || scheme === 'socks5h') {
        return 'SOCKS ' + proxy;
    }
    else if (scheme === 'socks4' || scheme === 'socks4a') {
        return 'SOCKS4 ' + proxy;
    }
    return undefined;
}
function shouldBypassProxy(value) {
    if (value.includes("*")) {
        return () => true;
    }
    const filters = value
        .map(s => s.trim().split(':', 2))
        .map(([name, port]) => ({ name, port }))
        .filter(filter => !!filter.name)
        .map(({ name, port }) => {
        const domain = name[0] === '.' ? name : `.${name}`;
        return { domain, port };
    });
    if (!filters.length) {
        return () => false;
    }
    return (hostname, port) => filters.some(({ domain, port: filterPort }) => {
        return `.${hostname.toLowerCase()}`.endsWith(domain) && (!filterPort || port === filterPort);
    });
}
function noProxyFromEnv(envValue) {
    const value = (envValue || '')
        .trim()
        .toLowerCase()
        .split(',');
    return shouldBypassProxy(value);
}
function noProxyFromConfig(noProxy) {
    const value = noProxy
        .map((item) => item.trim().toLowerCase());
    return shouldBypassProxy(value);
}
function createHttpPatch(params, originals, resolveProxy) {
    return {
        get: patch(originals.get),
        request: patch(originals.request)
    };
    function patch(original) {
        function patched(url, options, callback) {
            if (typeof url !== 'string' && !(url && url.searchParams)) {
                callback = options;
                options = url;
                url = null;
            }
            if (typeof options === 'function') {
                callback = options;
                options = null;
            }
            options = options || {};
            if (options.socketPath) {
                return original.apply(null, arguments);
            }
            const originalAgent = options.agent;
            if (originalAgent === true) {
                throw new Error('Unexpected agent option: true');
            }
            const isHttps = originals.globalAgent.protocol === 'https:';
            const optionsPatched = originalAgent instanceof agent_1.PacProxyAgent;
            const config = params.getProxySupport();
            const useProxySettings = !optionsPatched && (config === 'override' || config === 'fallback' || (config === 'on' && originalAgent === undefined));
            const addCertificatesV1 = !optionsPatched && params.addCertificatesV1() && isHttps && !options.ca;
            if (useProxySettings || addCertificatesV1) {
                if (url) {
                    const parsed = typeof url === 'string' ? new nodeurl.URL(url) : url;
                    const urlOptions = {
                        protocol: parsed.protocol,
                        hostname: parsed.hostname.lastIndexOf('[', 0) === 0 ? parsed.hostname.slice(1, -1) : parsed.hostname,
                        port: parsed.port,
                        path: `${parsed.pathname}${parsed.search}`
                    };
                    if (parsed.username || parsed.password) {
                        options.auth = `${parsed.username}:${parsed.password}`;
                    }
                    options = Object.assign(Object.assign({}, urlOptions), options);
                }
                else {
                    options = Object.assign({}, options);
                }
                const resolveP = (req, opts, url) => new Promise(resolve => resolveProxy({ useProxySettings, addCertificatesV1 }, req, opts, url, resolve));
                const host = options.hostname || options.host;
                const isLocalhost = !host || host === 'localhost' || host === '127.0.0.1'; // Avoiding https://github.com/microsoft/vscode/issues/120354
                const agent = (0, agent_1.default)(resolveP, {
                    originalAgent: (!useProxySettings || isLocalhost || config === 'fallback') ? originalAgent : undefined,
                    lookupProxyAuthorization: params.lookupProxyAuthorization,
                });
                agent.protocol = isHttps ? 'https:' : 'http:';
                options.agent = agent;
                return original(options, callback);
            }
            return original.apply(null, arguments);
        }
        return patched;
    }
}
exports.createHttpPatch = createHttpPatch;
function createNetPatch(params, originals) {
    return {
        connect: patchNetConnect(params, originals.connect),
    };
}
exports.createNetPatch = createNetPatch;
function patchNetConnect(params, original) {
    function connect(...args) {
        if (params.getLogLevel() === LogLevel.Trace) {
            params.log.trace('ProxyResolver#net.connect', toLogString(args));
        }
        if (!params.addCertificatesV2()) {
            return original.apply(null, arguments);
        }
        const socket = new net.Socket();
        socket.connecting = true;
        getOrLoadAdditionalCertificates(params)
            .then(() => {
            const options = args.find(arg => arg && typeof arg === 'object');
            if (options === null || options === void 0 ? void 0 : options.timeout) {
                socket.setTimeout(options.timeout);
            }
            socket.connect.apply(socket, arguments);
        })
            .catch(err => {
            params.log.error('ProxyResolver#net.connect', toErrorMessage(err));
        });
        return socket;
    }
    return connect;
}
function createTlsPatch(params, originals) {
    return {
        connect: patchTlsConnect(params, originals.connect),
        createSecureContext: patchCreateSecureContext(originals.createSecureContext),
    };
}
exports.createTlsPatch = createTlsPatch;
function patchTlsConnect(params, original) {
    function connect(...args) {
        if (params.getLogLevel() === LogLevel.Trace) {
            params.log.trace('ProxyResolver#tls.connect', toLogString(args));
        }
        let options = args.find(arg => arg && typeof arg === 'object');
        if (!params.addCertificatesV2() || (options === null || options === void 0 ? void 0 : options.ca)) {
            return original.apply(null, arguments);
        }
        let secureConnectListener = args.find(arg => typeof arg === 'function');
        if (!options) {
            options = {};
            const listenerIndex = args.findIndex(arg => typeof arg === 'function');
            if (listenerIndex !== -1) {
                args[listenerIndex - 1] = options;
            }
            else {
                args[2] = options;
            }
        }
        else {
            options = Object.assign({}, options);
        }
        const port = typeof args[0] === 'number' ? args[0]
            : typeof args[0] === 'string' && !isNaN(Number(args[0])) ? Number(args[0]) // E.g., http2 module passes port as string.
                : options.port;
        const host = typeof args[1] === 'string' ? args[1] : options.host;
        let tlsSocket;
        if (options.socket) {
            if (!options.secureContext) {
                options.secureContext = tls.createSecureContext(options);
            }
            if (!_certificates) {
                params.log.trace('ProxyResolver#tls.connect waiting for existing socket connect');
                options.socket.once('connect', () => {
                    params.log.trace('ProxyResolver#tls.connect got existing socket connect - adding certs');
                    for (const cert of _certificates || []) {
                        options.secureContext.context.addCACert(cert);
                    }
                });
            }
            else {
                params.log.trace('ProxyResolver#tls.connect existing socket already connected - adding certs');
                for (const cert of _certificates) {
                    options.secureContext.context.addCACert(cert);
                }
            }
        }
        else {
            if (!options.secureContext) {
                options.secureContext = tls.createSecureContext(options);
            }
            params.log.trace('ProxyResolver#tls.connect creating unconnected socket');
            const socket = options.socket = new net.Socket();
            socket.connecting = true;
            getOrLoadAdditionalCertificates(params)
                .then(caCertificates => {
                params.log.trace('ProxyResolver#tls.connect adding certs before connecting socket');
                for (const cert of caCertificates) {
                    options.secureContext.context.addCACert(cert);
                }
                if (options === null || options === void 0 ? void 0 : options.timeout) {
                    socket.setTimeout(options.timeout);
                    socket.once('timeout', () => {
                        tlsSocket.emit('timeout');
                    });
                }
                socket.connect(Object.assign({ port: port, host }, options));
            })
                .catch(err => {
                params.log.error('ProxyResolver#tls.connect', toErrorMessage(err));
            });
        }
        if (typeof args[1] === 'string') {
            tlsSocket = original(port, host, options, secureConnectListener);
        }
        else if (typeof args[0] === 'number' || typeof args[0] === 'string' && !isNaN(Number(args[0]))) {
            tlsSocket = original(port, options, secureConnectListener);
        }
        else {
            tlsSocket = original(options, secureConnectListener);
        }
        return tlsSocket;
    }
    return connect;
}
function patchCreateSecureContext(original) {
    return function (details) {
        const context = original.apply(null, arguments);
        const certs = details === null || details === void 0 ? void 0 : details._vscodeAdditionalCaCerts;
        if (certs) {
            for (const cert of certs) {
                context.context.addCACert(cert);
            }
        }
        return context;
    };
}
function addCertificatesV1(params, addCertificatesV1, opts, callback) {
    if (addCertificatesV1) {
        getOrLoadAdditionalCertificates(params)
            .then(caCertificates => {
            opts._vscodeAdditionalCaCerts = caCertificates;
            callback();
        })
            .catch(err => {
            params.log.error('ProxyResolver#addCertificatesV1', toErrorMessage(err));
        });
    }
    else {
        callback();
    }
}
let _certificatesPromise;
let _certificates;
function getOrLoadAdditionalCertificates(params) {
    return __awaiter(this, void 0, void 0, function* () {
        if (!_certificatesPromise) {
            _certificatesPromise = (() => __awaiter(this, void 0, void 0, function* () {
                return _certificates = yield params.loadAdditionalCertificates();
            }))();
        }
        return _certificatesPromise;
    });
}
let _systemCertificatesPromise;
function loadSystemCertificates(params) {
    return __awaiter(this, void 0, void 0, function* () {
        if (!_systemCertificatesPromise) {
            _systemCertificatesPromise = (() => __awaiter(this, void 0, void 0, function* () {
                try {
                    const certs = yield readSystemCertificates();
                    params.log.debug('ProxyResolver#loadSystemCertificates count', certs.length);
                    const now = Date.now();
                    const filtered = certs
                        .filter(cert => {
                        try {
                            const parsedCert = new crypto.X509Certificate(cert);
                            const parsedDate = Date.parse(parsedCert.validTo);
                            return isNaN(parsedDate) || parsedDate > now;
                        }
                        catch (err) {
                            params.log.debug('ProxyResolver#loadSystemCertificates parse error', toErrorMessage(err));
                            return false;
                        }
                    });
                    params.log.debug('ProxyResolver#loadSystemCertificates count filtered', filtered.length);
                    return filtered;
                }
                catch (err) {
                    params.log.error('ProxyResolver#loadSystemCertificates error', toErrorMessage(err));
                    return [];
                }
            }))();
        }
        return _systemCertificatesPromise;
    });
}
exports.loadSystemCertificates = loadSystemCertificates;
function resetCaches() {
    _certificatesPromise = undefined;
    _certificates = undefined;
    _systemCertificatesPromise = undefined;
}
exports.resetCaches = resetCaches;
function readSystemCertificates() {
    return __awaiter(this, void 0, void 0, function* () {
        if (process.platform === 'win32') {
            return readWindowsCaCertificates();
        }
        if (process.platform === 'darwin') {
            return readMacCaCertificates();
        }
        if (process.platform === 'linux') {
            return readLinuxCaCertificates();
        }
        return [];
    });
}
function readWindowsCaCertificates() {
    return __awaiter(this, void 0, void 0, function* () {
        // @ts-ignore Windows only
        const winCA = yield Promise.resolve().then(() => __importStar(require('@vscode/windows-ca-certs')));
        let ders = [];
        const store = new winCA.Crypt32();
        try {
            let der;
            while (der = store.next()) {
                ders.push(der);
            }
        }
        finally {
            store.done();
        }
        const certs = new Set(ders.map(derToPem));
        return Array.from(certs);
    });
}
function readMacCaCertificates() {
    return __awaiter(this, void 0, void 0, function* () {
        const stdout = yield new Promise((resolve, reject) => {
            const child = cp.spawn('/usr/bin/security', ['find-certificate', '-a', '-p']);
            const stdout = [];
            child.stdout.setEncoding('utf8');
            child.stdout.on('data', str => stdout.push(str));
            child.on('error', reject);
            child.on('exit', code => code ? reject(code) : resolve(stdout.join('')));
        });
        const certs = new Set(stdout.split(/(?=-----BEGIN CERTIFICATE-----)/g)
            .filter(pem => !!pem.length));
        return Array.from(certs);
    });
}
const linuxCaCertificatePaths = [
    '/etc/ssl/certs/ca-certificates.crt',
    '/etc/ssl/certs/ca-bundle.crt',
    '/etc/ssl/ca-bundle.pem', // OpenSUSE
];
function readLinuxCaCertificates() {
    return __awaiter(this, void 0, void 0, function* () {
        for (const certPath of linuxCaCertificatePaths) {
            try {
                const content = yield fs.promises.readFile(certPath, { encoding: 'utf8' });
                const certs = new Set(content.split(/(?=-----BEGIN CERTIFICATE-----)/g)
                    .filter(pem => !!pem.length));
                return Array.from(certs);
            }
            catch (err) {
                if ((err === null || err === void 0 ? void 0 : err.code) !== 'ENOENT') {
                    throw err;
                }
            }
        }
        return [];
    });
}
function derToPem(blob) {
    const lines = ['-----BEGIN CERTIFICATE-----'];
    const der = blob.toString('base64');
    for (let i = 0; i < der.length; i += 64) {
        lines.push(der.substr(i, 64));
    }
    lines.push('-----END CERTIFICATE-----', '');
    return lines.join(os.EOL);
}
function toErrorMessage(err) {
    return err && (err.stack || err.message) || String(err);
}
function toLogString(args) {
    return `[${args.map(arg => JSON.stringify(arg, (key, value) => {
        const t = typeof value;
        if (t === 'object') {
            if (key) {
                if ((key === 'ca' || key === '_vscodeAdditionalCaCerts') && Array.isArray(value)) {
                    return `[${value.length} certs]`;
                }
                if (key === 'ca' && (typeof value === 'string' || Buffer.isBuffer(value))) {
                    return `[${(value.toString().match(/-----BEGIN CERTIFICATE-----/g) || []).length} certs]`;
                }
                return !value || value.toString ? String(value) : Object.prototype.toString.call(value);
            }
            else {
                return value;
            }
        }
        if (t === 'function') {
            return `[Function: ${value.name}]`;
        }
        if (t === 'bigint') {
            return String(value);
        }
        if (t === 'string' && value.length > 25) {
            const len = `[${value.length} chars]`;
            return `${value.substr(0, 25 - len.length)}${len}`;
        }
        return value;
    })).join(', ')}]`;
}
exports.toLogString = toLogString;
/**
 * Certificates for testing. These are not automatically used, but can be added in
 * ProxyAgentParams#loadAdditionalCertificates(). This just provides a shared array
 * between production code and tests.
 */
exports.testCertificates = [];//# sourceMappingURL=https://main.vscode-cdn.net/sourcemaps/f1a4fb101478ce6ec82fe9627c43efbf9e98c813/node_modules/@vscode/proxy-agent/out/index.js.map