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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 4x 4x 4x 4x 1x 4x 4x 4x 4x 1x 4x 4x 4x 4x 4x 4x 7x 7x 7x 3x 3x 3x 3x 3x 3x 3x 3x 3x 7x 7x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 3x 3x | import dbg from 'debug'; import fetch, { RequestInit, Response } from 'node-fetch'; import { negotiateParse } from '../msgParser'; import { sspi, InitializeSecurityContextInput, AcquireCredHandleInput, } from '../../../lib/api'; import { getSPNFromURI } from './misc'; import { ClientCookie } from './ClientCookie'; import { ClientInfo } from './ClientInfo'; import { AbstractHandler } from './AbstractHandler'; import { decode, encode, hexDump } from '../misc'; const debug = dbg('node-expose-sspi:client'); export class NegotiateHandler extends AbstractHandler { constructor(private authenticationType = 'Negotiate') { super(); } async handle( clientInfo: ClientInfo, clientCookie: ClientCookie, response: Response, resource: string, init: RequestInit = {} ): Promise<Response> { debug('starting negotiate auth'); if (this.authenticationType === 'NTLM') { clientInfo.ssp = 'NTLM'; } const packageInfo = sspi.QuerySecurityPackageInfo(clientInfo.ssp); debug('packageInfo: ', packageInfo); const credInput = { packageName: packageInfo.Name, credentialUse: 'SECPKG_CRED_OUTBOUND', } as AcquireCredHandleInput; if (clientInfo.user) { credInput.authData = { domain: clientInfo.domain, user: clientInfo.user, password: clientInfo.password, }; } debug('credInput: ', credInput); const clientCred = sspi.AcquireCredentialsHandle(credInput); const targetName = clientInfo.targetName === undefined ? await getSPNFromURI(resource) : clientInfo.targetName; debug('targetName: ', targetName); const input: InitializeSecurityContextInput = { isFirstCall: true, credential: clientCred.credential, targetName, contextReq: [ 'ISC_REQ_CONNECTION', 'ISC_REQ_CONFIDENTIALITY', 'ISC_REQ_MUTUAL_AUTH', 'ISC_REQ_REPLAY_DETECT', ], cbMaxToken: packageInfo.cbMaxToken, targetDataRep: 'SECURITY_NATIVE_DREP', }; let clientSecurityContext; while ( response.headers.has('www-authenticate') && response.status === 401 && response.headers .get('www-authenticate') ?.startsWith(this.authenticationType) ) { const wwwAuthenticateHeader = response.headers.get( 'www-authenticate' ) as string; debug('wwwAuthenticateHeader: ', wwwAuthenticateHeader); if (clientSecurityContext) { Iif (!wwwAuthenticateHeader.startsWith(this.authenticationType + ' ')) { break; } const bufferStr = wwwAuthenticateHeader .split(',')[0] .substr((this.authenticationType + ' ').length); debug('bufferStr: ', bufferStr); const responseToken = negotiateParse(bufferStr); debug('responseToken: ', responseToken); const buffer = decode(bufferStr); input.SecBufferDesc = { ulVersion: 0, buffers: [buffer], }; input.contextHandle = clientSecurityContext.contextHandle; input.isFirstCall = false; } debug('input: ', input); clientSecurityContext = sspi.InitializeSecurityContext(input); debug('clientSecurityContext: ', clientSecurityContext); debug(hexDump(clientSecurityContext.SecBufferDesc.buffers[0])); Iif ( ['SEC_I_COMPLETE_NEEDED', 'SEC_I_COMPLETE_AND_CONTINUE'].includes( clientSecurityContext.SECURITY_STATUS ) ) { debug('you should not see this'); } const base64 = encode(clientSecurityContext.SecBufferDesc.buffers[0]); const debugObject = negotiateParse(base64); debug('debugObject: ', debugObject); const requestInit = { ...init }; requestInit.headers = { ...init.headers, Authorization: this.authenticationType + ' ' + base64, }; clientCookie.restituteCookies(requestInit); debug('requestInit.headers', requestInit.headers); response = await fetch(resource, requestInit); debug('response.status', response.status); debug('response.headers', response.headers); clientCookie.saveCookies(response); } debug('handleAuth: end'); return response; } } |