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SOUTHERNCO\x2mjbyrn
343
node_modules/hawk/dist/client.js
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343
node_modules/hawk/dist/client.js
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'use strict'
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// Load modules
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;
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var _typeof = function (obj) {
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return obj && typeof Symbol !== 'undefined' && obj.constructor === Symbol ? 'symbol' : typeof obj;
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};
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var Url = require('url');
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var Hoek = require('hoek');
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var Cryptiles = require('cryptiles');
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var Crypto = require('./crypto');
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var Utils = require('./utils');
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// Declare internals
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var internals = {};
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// Generate an Authorization header for a given request
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/*
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uri: 'http://example.com/resource?a=b' or object from Url.parse()
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method: HTTP verb (e.g. 'GET', 'POST')
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options: {
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// Required
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credentials: {
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id: 'dh37fgj492je',
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key: 'aoijedoaijsdlaksjdl',
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algorithm: 'sha256' // 'sha1', 'sha256'
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},
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// Optional
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ext: 'application-specific', // Application specific data sent via the ext attribute
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timestamp: Date.now(), // A pre-calculated timestamp
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nonce: '2334f34f', // A pre-generated nonce
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localtimeOffsetMsec: 400, // Time offset to sync with server time (ignored if timestamp provided)
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payload: '{"some":"payload"}', // UTF-8 encoded string for body hash generation (ignored if hash provided)
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contentType: 'application/json', // Payload content-type (ignored if hash provided)
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hash: 'U4MKKSmiVxk37JCCrAVIjV=', // Pre-calculated payload hash
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app: '24s23423f34dx', // Oz application id
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dlg: '234sz34tww3sd' // Oz delegated-by application id
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}
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*/
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exports.header = function (uri, method, options) {
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var result = {
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field: '',
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artifacts: {}
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};
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// Validate inputs
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if (!uri || typeof uri !== 'string' && (typeof uri === 'undefined' ? 'undefined' : _typeof(uri)) !== 'object' || !method || typeof method !== 'string' || !options || (typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object') {
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result.err = 'Invalid argument type';
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return result;
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}
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// Application time
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var timestamp = options.timestamp || Utils.nowSecs(options.localtimeOffsetMsec);
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// Validate credentials
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var credentials = options.credentials;
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if (!credentials || !credentials.id || !credentials.key || !credentials.algorithm) {
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result.err = 'Invalid credential object';
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return result;
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}
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if (Crypto.algorithms.indexOf(credentials.algorithm) === -1) {
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result.err = 'Unknown algorithm';
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return result;
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}
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// Parse URI
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if (typeof uri === 'string') {
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uri = Url.parse(uri);
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}
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// Calculate signature
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var artifacts = {
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ts: timestamp,
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nonce: options.nonce || Cryptiles.randomString(6),
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method: method,
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resource: uri.pathname + (uri.search || ''), // Maintain trailing '?'
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host: uri.hostname,
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port: uri.port || (uri.protocol === 'http:' ? 80 : 443),
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hash: options.hash,
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ext: options.ext,
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app: options.app,
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dlg: options.dlg
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};
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result.artifacts = artifacts;
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// Calculate payload hash
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if (!artifacts.hash && (options.payload || options.payload === '')) {
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artifacts.hash = Crypto.calculatePayloadHash(options.payload, credentials.algorithm, options.contentType);
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}
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var mac = Crypto.calculateMac('header', credentials, artifacts);
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// Construct header
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var hasExt = artifacts.ext !== null && artifacts.ext !== undefined && artifacts.ext !== ''; // Other falsey values allowed
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var header = 'Hawk id="' + credentials.id + '", ts="' + artifacts.ts + '", nonce="' + artifacts.nonce + (artifacts.hash ? '", hash="' + artifacts.hash : '') + (hasExt ? '", ext="' + Hoek.escapeHeaderAttribute(artifacts.ext) : '') + '", mac="' + mac + '"';
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if (artifacts.app) {
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header = header + ', app="' + artifacts.app + (artifacts.dlg ? '", dlg="' + artifacts.dlg : '') + '"';
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}
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result.field = header;
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return result;
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};
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// Validate server response
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/*
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res: node's response object
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artifacts: object received from header().artifacts
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options: {
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payload: optional payload received
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required: specifies if a Server-Authorization header is required. Defaults to 'false'
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}
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*/
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exports.authenticate = function (res, credentials, artifacts, options) {
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artifacts = Hoek.clone(artifacts);
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options = options || {};
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if (res.headers['www-authenticate']) {
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// Parse HTTP WWW-Authenticate header
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var wwwAttributes = Utils.parseAuthorizationHeader(res.headers['www-authenticate'], ['ts', 'tsm', 'error']);
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if (wwwAttributes instanceof Error) {
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return false;
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}
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// Validate server timestamp (not used to update clock since it is done via the SNPT client)
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if (wwwAttributes.ts) {
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var tsm = Crypto.calculateTsMac(wwwAttributes.ts, credentials);
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if (tsm !== wwwAttributes.tsm) {
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return false;
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}
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}
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}
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// Parse HTTP Server-Authorization header
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if (!res.headers['server-authorization'] && !options.required) {
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return true;
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}
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var attributes = Utils.parseAuthorizationHeader(res.headers['server-authorization'], ['mac', 'ext', 'hash']);
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if (attributes instanceof Error) {
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return false;
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}
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artifacts.ext = attributes.ext;
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artifacts.hash = attributes.hash;
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var mac = Crypto.calculateMac('response', credentials, artifacts);
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if (mac !== attributes.mac) {
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return false;
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}
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if (!options.payload && options.payload !== '') {
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return true;
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}
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if (!attributes.hash) {
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return false;
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}
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var calculatedHash = Crypto.calculatePayloadHash(options.payload, credentials.algorithm, res.headers['content-type']);
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return calculatedHash === attributes.hash;
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};
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// Generate a bewit value for a given URI
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/*
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uri: 'http://example.com/resource?a=b' or object from Url.parse()
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options: {
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// Required
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credentials: {
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id: 'dh37fgj492je',
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key: 'aoijedoaijsdlaksjdl',
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algorithm: 'sha256' // 'sha1', 'sha256'
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},
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ttlSec: 60 * 60, // TTL in seconds
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// Optional
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ext: 'application-specific', // Application specific data sent via the ext attribute
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localtimeOffsetMsec: 400 // Time offset to sync with server time
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};
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*/
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exports.getBewit = function (uri, options) {
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// Validate inputs
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if (!uri || typeof uri !== 'string' && (typeof uri === 'undefined' ? 'undefined' : _typeof(uri)) !== 'object' || !options || (typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object' || !options.ttlSec) {
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return '';
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}
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options.ext = options.ext === null || options.ext === undefined ? '' : options.ext; // Zero is valid value
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// Application time
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var now = Utils.now(options.localtimeOffsetMsec);
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// Validate credentials
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var credentials = options.credentials;
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if (!credentials || !credentials.id || !credentials.key || !credentials.algorithm) {
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return '';
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}
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if (Crypto.algorithms.indexOf(credentials.algorithm) === -1) {
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return '';
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}
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// Parse URI
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if (typeof uri === 'string') {
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uri = Url.parse(uri);
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}
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// Calculate signature
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var exp = Math.floor(now / 1000) + options.ttlSec;
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var mac = Crypto.calculateMac('bewit', credentials, {
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ts: exp,
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nonce: '',
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method: 'GET',
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resource: uri.pathname + (uri.search || ''), // Maintain trailing '?'
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host: uri.hostname,
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port: uri.port || (uri.protocol === 'http:' ? 80 : 443),
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ext: options.ext
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});
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// Construct bewit: id\exp\mac\ext
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var bewit = credentials.id + '\\' + exp + '\\' + mac + '\\' + options.ext;
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return Hoek.base64urlEncode(bewit);
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};
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// Generate an authorization string for a message
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/*
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host: 'example.com',
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port: 8000,
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message: '{"some":"payload"}', // UTF-8 encoded string for body hash generation
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options: {
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// Required
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credentials: {
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id: 'dh37fgj492je',
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key: 'aoijedoaijsdlaksjdl',
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algorithm: 'sha256' // 'sha1', 'sha256'
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},
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// Optional
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timestamp: Date.now(), // A pre-calculated timestamp
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nonce: '2334f34f', // A pre-generated nonce
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localtimeOffsetMsec: 400, // Time offset to sync with server time (ignored if timestamp provided)
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}
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*/
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exports.message = function (host, port, message, options) {
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// Validate inputs
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if (!host || typeof host !== 'string' || !port || typeof port !== 'number' || message === null || message === undefined || typeof message !== 'string' || !options || (typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object') {
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return null;
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}
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// Application time
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var timestamp = options.timestamp || Utils.nowSecs(options.localtimeOffsetMsec);
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// Validate credentials
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var credentials = options.credentials;
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if (!credentials || !credentials.id || !credentials.key || !credentials.algorithm) {
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// Invalid credential object
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return null;
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}
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if (Crypto.algorithms.indexOf(credentials.algorithm) === -1) {
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return null;
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}
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// Calculate signature
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var artifacts = {
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ts: timestamp,
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nonce: options.nonce || Cryptiles.randomString(6),
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host: host,
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port: port,
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hash: Crypto.calculatePayloadHash(message, credentials.algorithm)
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};
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// Construct authorization
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var result = {
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id: credentials.id,
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ts: artifacts.ts,
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nonce: artifacts.nonce,
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hash: artifacts.hash,
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mac: Crypto.calculateMac('message', credentials, artifacts)
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};
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return result;
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};
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