client/src/app/core/auth/auth.service.ts

   1 import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http'
   2 import { Injectable } from '@angular/core'
   3 import { Router } from '@angular/router'
   4 import { NotificationsService } from 'angular2-notifications'
   5 import 'rxjs/add/observable/throw'
   6 import 'rxjs/add/operator/do'
   7 import 'rxjs/add/operator/map'
   8 import 'rxjs/add/operator/mergeMap'
   9 import { Observable } from 'rxjs/Observable'
  10 import { ReplaySubject } from 'rxjs/ReplaySubject'
  11 import { Subject } from 'rxjs/Subject'
  12 import { OAuthClientLocal, User as UserServerModel, UserRefreshToken } from '../../../../../shared'
  13 import { User } from '../../../../../shared/models/users'
  14 import { UserLogin } from '../../../../../shared/models/users/user-login.model'
  15 import { environment } from '../../../environments/environment'
  16 import { RestExtractor } from '../../shared/rest'
  17 import { AuthStatus } from './auth-status.model'
  18 import { AuthUser } from './auth-user.model'
  19
  20 interface UserLoginWithUsername extends UserLogin {
  21   access_token: string
  22   refresh_token: string
  23   token_type: string
  24   username: string
  25 }
  26
  27 type UserLoginWithUserInformation = UserLoginWithUsername & User
  28
  29 @Injectable()
  30 export class AuthService {
  31   private static BASE_CLIENT_URL = environment.apiUrl + '/api/v1/oauth-clients/local'
  32   private static BASE_TOKEN_URL = environment.apiUrl + '/api/v1/users/token'
  33   private static BASE_USER_INFORMATION_URL = environment.apiUrl + '/api/v1/users/me'
  34
  35   loginChangedSource: Observable<AuthStatus>
  36   userInformationLoaded = new ReplaySubject<boolean>(1)
  37
  38   private clientId: string
  39   private clientSecret: string
  40   private loginChanged: Subject<AuthStatus>
  41   private user: AuthUser = null
  42
  43   constructor (
  44     private http: HttpClient,
  45     private notificationsService: NotificationsService,
  46     private restExtractor: RestExtractor,
  47     private router: Router
  48    ) {
  49     this.loginChanged = new Subject<AuthStatus>()
  50     this.loginChangedSource = this.loginChanged.asObservable()
  51
  52     // Return null if there is nothing to load
  53     this.user = AuthUser.load()
  54   }
  55
  56   loadClientCredentials () {
  57     // Fetch the client_id/client_secret
  58     // FIXME: save in local storage?
  59     this.http.get<OAuthClientLocal>(AuthService.BASE_CLIENT_URL)
  60              .catch(res => this.restExtractor.handleError(res))
  61              .subscribe(
  62                res => {
  63                  this.clientId = res.client_id
  64                  this.clientSecret = res.client_secret
  65                  console.log('Client credentials loaded.')
  66                },
  67
  68                error => {
  69                  let errorMessage = error.message
  70
  71                  if (error.status === 403) {
  72                    errorMessage = `Cannot retrieve OAuth Client credentials: ${error.text}. \n`
  73                    errorMessage += 'Ensure you have correctly configured PeerTube (config/ directory), in particular the "webserver" section.'
  74                  }
  75
  76                  // We put a bigger timeout
  77                  // This is an important message
  78                  this.notificationsService.error('Error', errorMessage, { timeOut: 7000 })
  79                }
  80              )
  81   }
  82
  83   getRefreshToken () {
  84     if (this.user === null) return null
  85
  86     return this.user.getRefreshToken()
  87   }
  88
  89   getRequestHeaderValue () {
  90     const accessToken = this.getAccessToken()
  91
  92     if (accessToken === null) return null
  93
  94     return `${this.getTokenType()} ${accessToken}`
  95   }
  96
  97   getAccessToken () {
  98     if (this.user === null) return null
  99
 100     return this.user.getAccessToken()
 101   }
 102
 103   getTokenType () {
 104     if (this.user === null) return null
 105
 106     return this.user.getTokenType()
 107   }
 108
 109   getUser () {
 110     return this.user
 111   }
 112
 113   isLoggedIn () {
 114     return !!this.getAccessToken()
 115   }
 116
 117   login (username: string, password: string) {
 118     // Form url encoded
 119     const body = new URLSearchParams()
 120     body.set('client_id', this.clientId)
 121     body.set('client_secret', this.clientSecret)
 122     body.set('response_type', 'code')
 123     body.set('grant_type', 'password')
 124     body.set('scope', 'upload')
 125     body.set('username', username)
 126     body.set('password', password)
 127
 128     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 129     return this.http.post<UserLogin>(AuthService.BASE_TOKEN_URL, body.toString(), { headers })
 130                     .map(res => Object.assign(res, { username }))
 131                     .flatMap(res => this.mergeUserInformation(res))
 132                     .map(res => this.handleLogin(res))
 133                     .catch(res => this.restExtractor.handleError(res))
 134   }
 135
 136   logout () {
 137     // TODO: make an HTTP request to revoke the tokens
 138     this.user = null
 139
 140     AuthUser.flush()
 141
 142     this.setStatus(AuthStatus.LoggedOut)
 143   }
 144
 145   refreshAccessToken () {
 146     console.log('Refreshing token...')
 147
 148     const refreshToken = this.getRefreshToken()
 149
 150     // Form url encoded
 151     const body = new HttpParams().set('refresh_token', refreshToken)
 152                                  .set('client_id', this.clientId)
 153                                  .set('client_secret', this.clientSecret)
 154                                  .set('response_type', 'code')
 155                                  .set('grant_type', 'refresh_token')
 156
 157     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 158
 159     return this.http.post<UserRefreshToken>(AuthService.BASE_TOKEN_URL, body, { headers })
 160                     .map(res => this.handleRefreshToken(res))
 161                     .catch(err => {
 162                       console.error(err)
 163                       console.log('Cannot refresh token -> logout...')
 164                       this.logout()
 165                       this.router.navigate(['/login'])
 166
 167                       return Observable.throw({
 168                         error: 'You need to reconnect.'
 169                       })
 170                     })
 171   }
 172
 173   refreshUserInformation () {
 174     const obj = {
 175       access_token: this.user.getAccessToken(),
 176       refresh_token: null,
 177       token_type: this.user.getTokenType(),
 178       username: this.user.username
 179     }
 180
 181     this.mergeUserInformation(obj)
 182       .subscribe(
 183         res => {
 184           this.user.patch(res)
 185           this.user.save()
 186
 187           this.userInformationLoaded.next(true)
 188         }
 189       )
 190   }
 191
 192   private mergeUserInformation (obj: UserLoginWithUsername): Observable<UserLoginWithUserInformation> {
 193     // User is not loaded yet, set manually auth header
 194     const headers = new HttpHeaders().set('Authorization', `${obj.token_type} ${obj.access_token}`)
 195
 196     return this.http.get<UserServerModel>(AuthService.BASE_USER_INFORMATION_URL, { headers })
 197                     .map(res => Object.assign(obj, res))
 198   }
 199
 200   private handleLogin (obj: UserLoginWithUserInformation) {
 201     const hashTokens = {
 202       accessToken: obj.access_token,
 203       tokenType: obj.token_type,
 204       refreshToken: obj.refresh_token
 205     }
 206
 207     this.user = new AuthUser(obj, hashTokens)
 208     this.user.save()
 209
 210     this.setStatus(AuthStatus.LoggedIn)
 211     this.userInformationLoaded.next(true)
 212   }
 213
 214   private handleRefreshToken (obj: UserRefreshToken) {
 215     this.user.refreshTokens(obj.access_token, obj.refresh_token)
 216     this.user.save()
 217   }
 218
 219   private setStatus (status: AuthStatus) {
 220     this.loginChanged.next(status)
 221   }
 222 }