| 1 | /** |
| 2 | * @description MeshCentral Intel(R) AMT Interceptor |
| 3 | * @author Ylian Saint-Hilaire |
| 4 | * @copyright Intel Corporation 2018-2022 |
| 5 | * @license Apache-2.0 |
| 6 | * @version v0.0.3 |
| 7 | */ |
| 8 | |
| 9 | /*xjslint node: true */ |
| 10 | /*xjslint plusplus: true */ |
| 11 | /*xjslint maxlen: 256 */ |
| 12 | /*jshint node: true */ |
| 13 | /*jshint strict: false */ |
| 14 | /*jshint esversion: 6 */ |
| 15 | 'use strict'; |
| 16 | |
| 17 | const crypto = require('crypto'); |
| 18 | const common = require('./common.js'); |
| 19 | |
| 20 | var HttpInterceptorAuthentications = {}; |
| 21 | //var RedirInterceptorAuthentications = {}; |
| 22 | |
| 23 | // Construct a HTTP interceptor object |
| 24 | module.exports.CreateHttpInterceptor = function (args) { |
| 25 | var obj = {}; |
| 26 | |
| 27 | // Create a random hex string of a given length |
| 28 | obj.randomValueHex = function (len) { return crypto.randomBytes(Math.ceil(len / 2)).toString('hex').slice(0, len); }; |
| 29 | |
| 30 | obj.args = args; |
| 31 | obj.amt = { acc: '', mode: 0, count: 0, error: false }; // mode: 0:Header, 1:LengthBody, 2:ChunkedBody, 3:UntilClose |
| 32 | obj.ws = { acc: '', mode: 0, count: 0, error: false, authCNonce: obj.randomValueHex(10), authCNonceCount: 1 }; |
| 33 | obj.blockAmtStorage = false; |
| 34 | |
| 35 | // Private method |
| 36 | obj.Debug = function (msg) { console.log(msg); }; |
| 37 | |
| 38 | // Process data coming from Intel AMT |
| 39 | obj.processAmtData = function (data) { |
| 40 | obj.amt.acc += data.toString('binary'); // Add data to accumulator |
| 41 | data = ''; |
| 42 | var datalen = 0; |
| 43 | do { datalen = data.length; data += obj.processAmtDataEx(); } while (datalen != data.length); // Process as much data as possible |
| 44 | return Buffer.from(data, 'binary'); |
| 45 | }; |
| 46 | |
| 47 | // Process data coming from AMT in the accumulator |
| 48 | obj.processAmtDataEx = function () { |
| 49 | var i, r, headerend; |
| 50 | if (obj.amt.mode == 0) { // Header Mode |
| 51 | // Decode the HTTP header |
| 52 | headerend = obj.amt.acc.indexOf('\r\n\r\n'); |
| 53 | if (headerend < 0) return ''; |
| 54 | var headerlines = obj.amt.acc.substring(0, headerend).split('\r\n'); |
| 55 | obj.amt.acc = obj.amt.acc.substring(headerend + 4); |
| 56 | obj.amt.directive = headerlines[0].split(' '); |
| 57 | var headers = headerlines.slice(1); |
| 58 | obj.amt.headers = {}; |
| 59 | obj.amt.mode = 3; // UntilClose |
| 60 | for (i in headers) { |
| 61 | var j = headers[i].indexOf(':'); |
| 62 | if (j > 0) { |
| 63 | var v1 = headers[i].substring(0, j).trim().toLowerCase(); |
| 64 | var v2 = headers[i].substring(j + 1).trim(); |
| 65 | obj.amt.headers[v1] = v2; |
| 66 | if (v1.toLowerCase() == 'www-authenticate') { |
| 67 | HttpInterceptorAuthentications[obj.args.host + ':' + obj.args.port] = v2; |
| 68 | } else if (v1.toLowerCase() == 'content-length') { |
| 69 | obj.amt.count = parseInt(v2); |
| 70 | if (obj.amt.count > 0) { |
| 71 | obj.amt.mode = 1; // LengthBody |
| 72 | } else { |
| 73 | obj.amt.mode = 0; // Header |
| 74 | } |
| 75 | } else if (v1.toLowerCase() == 'transfer-encoding' && v2.toLowerCase() == 'chunked') { |
| 76 | obj.amt.mode = 2; // ChunkedBody |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | // Reform the HTTP header |
| 82 | r = obj.amt.directive.join(' ') + '\r\n'; |
| 83 | for (i in obj.amt.headers) { r += (i + ': ' + obj.amt.headers[i] + '\r\n'); } |
| 84 | r += '\r\n'; |
| 85 | return r; |
| 86 | } else if (obj.amt.mode == 1) { // Length Body Mode |
| 87 | // Send the body of content-length size |
| 88 | var rl = obj.amt.count; |
| 89 | if (rl < obj.amt.acc.length) rl = obj.amt.acc.length; |
| 90 | r = obj.amt.acc.substring(0, rl); |
| 91 | obj.amt.acc = obj.amt.acc.substring(rl); |
| 92 | obj.amt.count -= rl; |
| 93 | if (obj.amt.count == 0) { obj.amt.mode = 0; } |
| 94 | return r; |
| 95 | } else if (obj.amt.mode == 2) { // Chunked Body Mode |
| 96 | // Send data one chunk at a time |
| 97 | headerend = obj.amt.acc.indexOf('\r\n'); |
| 98 | if (headerend < 0) return ''; |
| 99 | var chunksize = parseInt(obj.amt.acc.substring(0, headerend), 16); |
| 100 | if ((chunksize == 0) && (obj.amt.acc.length >= headerend + 4)) { |
| 101 | // Send the ending chunk (NOTE: We do not support trailing headers) |
| 102 | r = obj.amt.acc.substring(0, headerend + 4); |
| 103 | obj.amt.acc = obj.amt.acc.substring(headerend + 4); |
| 104 | obj.amt.mode = 0; |
| 105 | return r; |
| 106 | } else if ((chunksize > 0) && (obj.amt.acc.length >= (headerend + 4 + chunksize))) { |
| 107 | // Send a chunk |
| 108 | r = obj.amt.acc.substring(0, headerend + chunksize + 4); |
| 109 | obj.amt.acc = obj.amt.acc.substring(headerend + chunksize + 4); |
| 110 | return r; |
| 111 | } |
| 112 | } else if (obj.amt.mode == 3) { // Until Close Mode |
| 113 | r = obj.amt.acc; |
| 114 | obj.amt.acc = ''; |
| 115 | return r; |
| 116 | } |
| 117 | return ''; |
| 118 | }; |
| 119 | |
| 120 | // Process data coming from the Browser |
| 121 | obj.processBrowserData = function (data) { |
| 122 | obj.ws.acc += data.toString('binary'); // Add data to accumulator |
| 123 | data = ''; |
| 124 | var datalen = 0; |
| 125 | do { datalen = data.length; data += obj.processBrowserDataEx(); } while (datalen != data.length); // Process as much data as possible |
| 126 | return Buffer.from(data, 'binary'); |
| 127 | }; |
| 128 | |
| 129 | // Process data coming from the Browser in the accumulator |
| 130 | obj.processBrowserDataEx = function () { |
| 131 | var i, r, headerend; |
| 132 | if (obj.ws.mode == 0) { // Header Mode |
| 133 | // Decode the HTTP header |
| 134 | headerend = obj.ws.acc.indexOf('\r\n\r\n'); |
| 135 | if (headerend < 0) return ''; |
| 136 | var headerlines = obj.ws.acc.substring(0, headerend).split('\r\n'); |
| 137 | obj.ws.acc = obj.ws.acc.substring(headerend + 4); |
| 138 | obj.ws.directive = headerlines[0].split(' '); |
| 139 | // If required, block access to amt-storage. This is needed when web storage is not supported on CIRA. |
| 140 | if ((obj.blockAmtStorage == true) && (obj.ws.directive.length > 1) && (obj.ws.directive[1].indexOf('/amt-storage') == 0)) { obj.ws.directive[1] = obj.ws.directive[1].replace('/amt-storage', '/amt-dummy-storage'); } |
| 141 | var headers = headerlines.slice(1); |
| 142 | obj.ws.headers = {}; |
| 143 | obj.ws.mode = 3; // UntilClose |
| 144 | for (i in headers) { |
| 145 | var j = headers[i].indexOf(':'); |
| 146 | if (j > 0) { |
| 147 | var v1 = headers[i].substring(0, j).trim().toLowerCase(); |
| 148 | var v2 = headers[i].substring(j + 1).trim(); |
| 149 | obj.ws.headers[v1] = v2; |
| 150 | if (v1.toLowerCase() == 'www-authenticate') { |
| 151 | HttpInterceptorAuthentications[obj.args.host + ':' + obj.args.port] = v2; |
| 152 | } else if (v1.toLowerCase() == 'content-length') { |
| 153 | obj.ws.count = parseInt(v2); |
| 154 | if (obj.ws.count > 0) { |
| 155 | obj.ws.mode = 1; // LengthBody |
| 156 | } else { |
| 157 | obj.ws.mode = 0; // Header |
| 158 | } |
| 159 | } else if (v1.toLowerCase() == 'transfer-encoding' && v2.toLowerCase() == 'chunked') { |
| 160 | obj.ws.mode = 2; // ChunkedBody |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | // Insert authentication |
| 166 | if (obj.args.user && obj.args.pass && HttpInterceptorAuthentications[obj.args.host + ':' + obj.args.port]) { |
| 167 | // We have authentication data, lets use it. |
| 168 | var AuthArgs = obj.GetAuthArgs(HttpInterceptorAuthentications[obj.args.host + ':' + obj.args.port]); |
| 169 | |
| 170 | // If different QOP options are proposed, always use 'auth' for now. |
| 171 | AuthArgs.qop = 'auth'; |
| 172 | |
| 173 | // In the future, we should support auth-int, but that will required the body of the request to be accumulated and hashed. |
| 174 | /* |
| 175 | if (AuthArgs.qop != null) { // If Intel AMT supports auth-int, use it. |
| 176 | var qopList = AuthArgs.qop.split(','); |
| 177 | for (var i in qopList) { qopList[i] = qopList[i].trim(); } |
| 178 | if (qopList.indexOf('auth-int') >= 0) { AuthArgs.qop = 'auth-int'; } else { AuthArgs.qop = 'auth'; } |
| 179 | } |
| 180 | */ |
| 181 | |
| 182 | var hash = obj.ComputeDigesthash(obj.args.user, obj.args.pass, AuthArgs.realm, obj.ws.directive[0], obj.ws.directive[1], AuthArgs.qop, AuthArgs.nonce, obj.ws.authCNonceCount, obj.ws.authCNonce); |
| 183 | var authstr = 'Digest username="' + obj.args.user + '",realm="' + AuthArgs.realm + '",nonce="' + AuthArgs.nonce + '",uri="' + obj.ws.directive[1] + '",qop=' + AuthArgs.qop + ',nc=' + obj.ws.authCNonceCount + ',cnonce="' + obj.ws.authCNonce + '",response="' + hash + '"'; |
| 184 | if (AuthArgs.opaque) { authstr += (',opaque="' + AuthArgs.opaque + '"'); } |
| 185 | obj.ws.headers.authorization = authstr; |
| 186 | obj.ws.authCNonceCount++; |
| 187 | } else { |
| 188 | // We don't have authentication, clear it out of the header if needed. |
| 189 | if (obj.ws.headers.authorization) { delete obj.ws.headers.authorization; } |
| 190 | } |
| 191 | |
| 192 | // Reform the HTTP header |
| 193 | r = obj.ws.directive.join(' ') + '\r\n'; |
| 194 | for (i in obj.ws.headers) { r += (i + ': ' + obj.ws.headers[i] + '\r\n'); } |
| 195 | r += '\r\n'; |
| 196 | return r; |
| 197 | } else if (obj.ws.mode == 1) { // Length Body Mode |
| 198 | // Send the body of content-length size |
| 199 | var rl = obj.ws.count; |
| 200 | if (rl < obj.ws.acc.length) rl = obj.ws.acc.length; |
| 201 | r = obj.ws.acc.substring(0, rl); |
| 202 | obj.ws.acc = obj.ws.acc.substring(rl); |
| 203 | obj.ws.count -= rl; |
| 204 | if (obj.ws.count == 0) { obj.ws.mode = 0; } |
| 205 | return r; |
| 206 | } else if (obj.amt.mode == 2) { // Chunked Body Mode |
| 207 | // Send data one chunk at a time |
| 208 | headerend = obj.amt.acc.indexOf('\r\n'); |
| 209 | if (headerend < 0) return ''; |
| 210 | var chunksize = parseInt(obj.amt.acc.substring(0, headerend), 16); |
| 211 | if (isNaN(chunksize)) { // TODO: Check this path |
| 212 | // Chunk is not in this batch, move one |
| 213 | r = obj.amt.acc.substring(0, headerend + 2); |
| 214 | obj.amt.acc = obj.amt.acc.substring(headerend + 2); |
| 215 | // Peek if we next is the end of chunked transfer |
| 216 | headerend = obj.amt.acc.indexOf('\r\n'); |
| 217 | if (headerend > 0) { |
| 218 | chunksize = parseInt(obj.amt.acc.substring(0, headerend), 16); |
| 219 | if (chunksize == 0) { obj.amt.mode = 0; } |
| 220 | } |
| 221 | return r; |
| 222 | } else if (chunksize == 0 && obj.amt.acc.length >= headerend + 4) { |
| 223 | // Send the ending chunk (NOTE: We do not support trailing headers) |
| 224 | r = obj.amt.acc.substring(0, headerend + 4); |
| 225 | obj.amt.acc = obj.amt.acc.substring(headerend + 4); |
| 226 | obj.amt.mode = 0; |
| 227 | return r; |
| 228 | } else if (chunksize > 0 && obj.amt.acc.length >= headerend + 4) { |
| 229 | // Send a chunk |
| 230 | r = obj.amt.acc.substring(0, headerend + chunksize + 4); |
| 231 | obj.amt.acc = obj.amt.acc.substring(headerend + chunksize + 4); |
| 232 | return r; |
| 233 | } |
| 234 | } else if (obj.ws.mode == 3) { // Until Close Mode |
| 235 | r = obj.ws.acc; |
| 236 | obj.ws.acc = ''; |
| 237 | return r; |
| 238 | } |
| 239 | return ''; |
| 240 | }; |
| 241 | |
| 242 | // Parse authentication values from the HTTP header |
| 243 | obj.GetAuthArgs = function (authheader) { |
| 244 | var authargs = {}; |
| 245 | var authargsstr = authheader.substring(7).split(','); |
| 246 | for (var j in authargsstr) { |
| 247 | var argstr = authargsstr[j]; |
| 248 | var i = argstr.indexOf('='); |
| 249 | var k = argstr.substring(0, i).trim().toLowerCase(); |
| 250 | var v = argstr.substring(i + 1).trim(); |
| 251 | if (v.substring(0, 1) == '\"') { v = v.substring(1, v.length - 1); } |
| 252 | if (i > 0) authargs[k] = v; |
| 253 | } |
| 254 | return authargs; |
| 255 | }; |
| 256 | |
| 257 | // Compute the MD5 digest hash for a set of values |
| 258 | obj.ComputeDigesthash = function (username, password, realm, method, path, qop, nonce, nc, cnonce) { |
| 259 | var ha1 = crypto.createHash('md5').update(username + ':' + realm + ':' + password).digest('hex'); |
| 260 | var ha2 = crypto.createHash('md5').update(method + ':' + path).digest('hex'); |
| 261 | return crypto.createHash('md5').update(ha1 + ':' + nonce + ':' + nc + ':' + cnonce + ':' + qop + ':' + ha2).digest('hex'); |
| 262 | }; |
| 263 | |
| 264 | return obj; |
| 265 | }; |
| 266 | |
| 267 | |
| 268 | // Construct a redirection interceptor object |
| 269 | module.exports.CreateRedirInterceptor = function (args) { |
| 270 | var obj = {}; |
| 271 | |
| 272 | // Create a random hex string of a given length |
| 273 | obj.randomValueHex = function (len) { return crypto.randomBytes(Math.ceil(len / 2)).toString('hex').slice(0, len); }; |
| 274 | |
| 275 | obj.args = args; |
| 276 | obj.amt = { acc: '', mode: 0, count: 0, error: false, direct: false }; |
| 277 | obj.ws = { acc: '', mode: 0, count: 0, error: false, direct: false, authCNonce: obj.randomValueHex(10), authCNonceCount: 1 }; |
| 278 | |
| 279 | obj.RedirectCommands = { StartRedirectionSession: 0x10, StartRedirectionSessionReply: 0x11, EndRedirectionSession: 0x12, AuthenticateSession: 0x13, AuthenticateSessionReply: 0x14 }; |
| 280 | obj.StartRedirectionSessionReplyStatus = { SUCCESS: 0, TYPE_UNKNOWN: 1, BUSY: 2, UNSUPPORTED: 3, ERROR: 0xFF }; |
| 281 | obj.AuthenticationStatus = { SUCCESS: 0, FALIURE: 1, NOTSUPPORTED: 2 }; |
| 282 | obj.AuthenticationType = { QUERY: 0, USERPASS: 1, KERBEROS: 2, BADDIGEST: 3, DIGEST: 4 }; |
| 283 | |
| 284 | // Private method |
| 285 | obj.Debug = function (msg) { console.log(msg); }; |
| 286 | |
| 287 | // Process data coming from Intel AMT |
| 288 | obj.processAmtData = function (data) { |
| 289 | if ((obj.amt.direct == true) && (obj.amt.acc == '')) { return data; } // Interceptor fast path |
| 290 | obj.amt.acc += data.toString('binary'); // Add data to accumulator |
| 291 | data = ''; |
| 292 | var datalen = 0; |
| 293 | do { datalen = data.length; data += obj.processAmtDataEx(); } while (datalen != data.length); // Process as much data as possible |
| 294 | return Buffer.from(data, 'binary'); |
| 295 | }; |
| 296 | |
| 297 | // Process data coming from AMT in the accumulator |
| 298 | obj.processAmtDataEx = function () { |
| 299 | var r; |
| 300 | if (obj.amt.acc.length == 0) return ''; |
| 301 | if (obj.amt.direct == true) { |
| 302 | var data = obj.amt.acc; |
| 303 | obj.amt.acc = ''; |
| 304 | return data; |
| 305 | } else { |
| 306 | //console.log(obj.amt.acc.charCodeAt(0)); |
| 307 | switch (obj.amt.acc.charCodeAt(0)) { |
| 308 | case obj.RedirectCommands.StartRedirectionSessionReply: { |
| 309 | if (obj.amt.acc.length < 4) return ''; |
| 310 | if (obj.amt.acc.charCodeAt(1) == obj.StartRedirectionSessionReplyStatus.SUCCESS) { |
| 311 | if (obj.amt.acc.length < 13) return ''; |
| 312 | var oemlen = obj.amt.acc.charCodeAt(12); |
| 313 | if (obj.amt.acc.length < 13 + oemlen) return ''; |
| 314 | r = obj.amt.acc.substring(0, 13 + oemlen); |
| 315 | obj.amt.acc = obj.amt.acc.substring(13 + oemlen); |
| 316 | return r; |
| 317 | } |
| 318 | break; |
| 319 | } |
| 320 | case obj.RedirectCommands.AuthenticateSessionReply: { |
| 321 | if (obj.amt.acc.length < 9) return ''; |
| 322 | var l = common.ReadIntX(obj.amt.acc, 5); |
| 323 | if (obj.amt.acc.length < 9 + l) return ''; |
| 324 | var authstatus = obj.amt.acc.charCodeAt(1); |
| 325 | var authType = obj.amt.acc.charCodeAt(4); |
| 326 | |
| 327 | if ((authType == obj.AuthenticationType.DIGEST) && (authstatus == obj.AuthenticationStatus.FALIURE)) { |
| 328 | // Grab and keep all authentication parameters |
| 329 | var realmlen = obj.amt.acc.charCodeAt(9); |
| 330 | obj.amt.digestRealm = obj.amt.acc.substring(10, 10 + realmlen); |
| 331 | var noncelen = obj.amt.acc.charCodeAt(10 + realmlen); |
| 332 | obj.amt.digestNonce = obj.amt.acc.substring(11 + realmlen, 11 + realmlen + noncelen); |
| 333 | var qoplen = obj.amt.acc.charCodeAt(11 + realmlen + noncelen); |
| 334 | obj.amt.digestQOP = obj.amt.acc.substring(12 + realmlen + noncelen, 12 + realmlen + noncelen + qoplen); |
| 335 | } |
| 336 | else if (authType != obj.AuthenticationType.QUERY && authstatus == obj.AuthenticationStatus.SUCCESS) { |
| 337 | // Intel AMT relayed that authentication was successful, go to direct relay mode in both directions. |
| 338 | obj.ws.direct = true; |
| 339 | obj.amt.direct = true; |
| 340 | } |
| 341 | |
| 342 | r = obj.amt.acc.substring(0, 9 + l); |
| 343 | obj.amt.acc = obj.amt.acc.substring(9 + l); |
| 344 | return r; |
| 345 | } |
| 346 | default: { |
| 347 | obj.amt.error = true; |
| 348 | return ''; |
| 349 | } |
| 350 | } |
| 351 | } |
| 352 | return ''; |
| 353 | }; |
| 354 | |
| 355 | // Process data coming from the Browser |
| 356 | obj.processBrowserData = function (data) { |
| 357 | if ((obj.ws.direct == true) && (obj.ws.acc == '')) { return data; } // Interceptor fast path |
| 358 | obj.ws.acc += data.toString('binary'); // Add data to accumulator |
| 359 | data = ''; |
| 360 | var datalen = 0; |
| 361 | do { datalen = data.length; data += obj.processBrowserDataEx(); } while (datalen != data.length); // Process as much data as possible |
| 362 | return Buffer.from(data, 'binary'); |
| 363 | }; |
| 364 | |
| 365 | // Process data coming from the Browser in the accumulator |
| 366 | obj.processBrowserDataEx = function () { |
| 367 | var r; |
| 368 | if (obj.ws.acc.length == 0) return ''; |
| 369 | if (obj.ws.direct == true) { |
| 370 | var data = obj.ws.acc; |
| 371 | obj.ws.acc = ''; |
| 372 | return data; |
| 373 | } else { |
| 374 | switch (obj.ws.acc.charCodeAt(0)) { |
| 375 | case obj.RedirectCommands.StartRedirectionSession: { |
| 376 | if (obj.ws.acc.length < 8) return ''; |
| 377 | r = obj.ws.acc.substring(0, 8); |
| 378 | obj.ws.acc = obj.ws.acc.substring(8); |
| 379 | return r; |
| 380 | } |
| 381 | case obj.RedirectCommands.EndRedirectionSession: { |
| 382 | if (obj.ws.acc.length < 4) return ''; |
| 383 | r = obj.ws.acc.substring(0, 4); |
| 384 | obj.ws.acc = obj.ws.acc.substring(4); |
| 385 | return r; |
| 386 | } |
| 387 | case obj.RedirectCommands.AuthenticateSession: { |
| 388 | if (obj.ws.acc.length < 9) return ''; |
| 389 | var l = common.ReadIntX(obj.ws.acc, 5); |
| 390 | if (obj.ws.acc.length < 9 + l) return ''; |
| 391 | |
| 392 | var authType = obj.ws.acc.charCodeAt(4); |
| 393 | if (authType == obj.AuthenticationType.DIGEST && obj.args.user && obj.args.pass) { |
| 394 | var authurl = '/RedirectionService'; |
| 395 | if (obj.amt.digestRealm) { |
| 396 | // Replace this authentication digest with a server created one |
| 397 | // We have everything we need to authenticate |
| 398 | var nc = '0'+ (10000000 + obj.ws.authCNonceCount).toString().substring(1);// set NC at least 8 bytes |
| 399 | obj.ws.authCNonceCount++; |
| 400 | var digest = obj.ComputeDigesthash(obj.args.user, obj.args.pass, obj.amt.digestRealm, 'POST', authurl, obj.amt.digestQOP, obj.amt.digestNonce, nc, obj.ws.authCNonce); |
| 401 | |
| 402 | // Replace this authentication digest with a server created one |
| 403 | // We have everything we need to authenticate |
| 404 | r = String.fromCharCode(0x13, 0x00, 0x00, 0x00, 0x04); |
| 405 | r += common.IntToStrX(obj.args.user.length + obj.amt.digestRealm.length + obj.amt.digestNonce.length + authurl.length + obj.ws.authCNonce.length + nc.toString().length + digest.length + obj.amt.digestQOP.length + 8); |
| 406 | r += String.fromCharCode(obj.args.user.length); // Username Length |
| 407 | r += obj.args.user; // Username |
| 408 | r += String.fromCharCode(obj.amt.digestRealm.length); // Realm Length |
| 409 | r += obj.amt.digestRealm; // Realm |
| 410 | r += String.fromCharCode(obj.amt.digestNonce.length); // Nonce Length |
| 411 | r += obj.amt.digestNonce; // Nonce |
| 412 | r += String.fromCharCode(authurl.length); // Authentication URL "/RedirectionService" Length |
| 413 | r += authurl; // Authentication URL |
| 414 | r += String.fromCharCode(obj.ws.authCNonce.length); // CNonce Length |
| 415 | r += obj.ws.authCNonce; // CNonce |
| 416 | r += String.fromCharCode(nc.toString().length); // NonceCount Length |
| 417 | r += nc.toString(); // NonceCount |
| 418 | r += String.fromCharCode(digest.length); // Response Length |
| 419 | r += digest; // Response |
| 420 | r += String.fromCharCode(obj.amt.digestQOP.length); // QOP Length |
| 421 | r += obj.amt.digestQOP; // QOP |
| 422 | |
| 423 | obj.ws.acc = obj.ws.acc.substring(9 + l); // Don't relay the original message |
| 424 | return r; |
| 425 | } else { |
| 426 | // Replace this authentication digest with a server created one |
| 427 | // Since we don't have authentication parameters, fill them in with blanks to get an error back what that info. |
| 428 | r = String.fromCharCode(0x13, 0x00, 0x00, 0x00, 0x04); |
| 429 | r += common.IntToStrX(obj.args.user.length + authurl.length + 8); |
| 430 | r += String.fromCharCode(obj.args.user.length); |
| 431 | r += obj.args.user; |
| 432 | r += String.fromCharCode(0x00, 0x00, authurl.length); |
| 433 | r += authurl; |
| 434 | r += String.fromCharCode(0x00, 0x00, 0x00, 0x00); |
| 435 | obj.ws.acc = obj.ws.acc.substring(9 + l); // Don't relay the original message |
| 436 | return r; |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | r = obj.ws.acc.substring(0, 9 + l); |
| 441 | obj.ws.acc = obj.ws.acc.substring(9 + l); |
| 442 | return r; |
| 443 | } |
| 444 | default: { |
| 445 | obj.ws.error = true; |
| 446 | } |
| 447 | } |
| 448 | } |
| 449 | return ''; |
| 450 | }; |
| 451 | |
| 452 | // Compute the MD5 digest hash for a set of values |
| 453 | obj.ComputeDigesthash = function (username, password, realm, method, path, qop, nonce, nc, cnonce) { |
| 454 | var ha1 = crypto.createHash('md5').update(username + ':' + realm + ':' + password).digest('hex'); |
| 455 | var ha2 = crypto.createHash('md5').update(method + ':' + path).digest('hex'); |
| 456 | return crypto.createHash('md5').update(ha1 + ':' + nonce + ':' + nc + ':' + cnonce + ':' + qop + ':' + ha2).digest('hex'); |
| 457 | }; |
| 458 | |
| 459 | return obj; |
| 460 | }; |