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

   1 import { Injectable } from '@angular/core'
   2 import { Router } from '@angular/router'
   3 import { Observable } from 'rxjs/Observable'
   4 import { Subject } from 'rxjs/Subject'
   5 import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http'
   6 import 'rxjs/add/operator/map'
   7 import 'rxjs/add/operator/mergeMap'
   8 import 'rxjs/add/observable/throw'
   9
  10 import { NotificationsService } from 'angular2-notifications'
  11
  12 import { AuthStatus } from './auth-status.model'
  13 import { AuthUser } from './auth-user.model'
  14 import { OAuthClientLocal, UserRole, UserRefreshToken } from '../../../../../shared'
  15 // Do not use the barrel (dependency loop)
  16 import { RestExtractor } from '../../shared/rest'
  17 import { UserLogin } from '../../../../../shared/models/users/user-login.model'
  18 import { User } from '../../shared/users/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 interface UserLoginWithUserInformation extends UserLogin {
  28   access_token: string
  29   refresh_token: string
  30   token_type: string
  31   username: string
  32   id: number
  33   role: UserRole
  34   displayNSFW: boolean
  35   email: string
  36 }
  37
  38 @Injectable()
  39 export class AuthService {
  40   private static BASE_CLIENT_URL = API_URL + '/api/v1/oauth-clients/local'
  41   private static BASE_TOKEN_URL = API_URL + '/api/v1/users/token'
  42   private static BASE_USER_INFORMATION_URL = API_URL + '/api/v1/users/me'
  43
  44   loginChangedSource: Observable<AuthStatus>
  45
  46   private clientId: string
  47   private clientSecret: string
  48   private loginChanged: Subject<AuthStatus>
  49   private user: AuthUser = null
  50
  51   constructor (
  52     private http: HttpClient,
  53     private notificationsService: NotificationsService,
  54     private restExtractor: RestExtractor,
  55     private router: Router
  56    ) {
  57     this.loginChanged = new Subject<AuthStatus>()
  58     this.loginChangedSource = this.loginChanged.asObservable()
  59
  60     // Return null if there is nothing to load
  61     this.user = AuthUser.load()
  62   }
  63
  64   loadClientCredentials () {
  65     // Fetch the client_id/client_secret
  66     // FIXME: save in local storage?
  67     this.http.get<OAuthClientLocal>(AuthService.BASE_CLIENT_URL)
  68              .catch(res => this.restExtractor.handleError(res))
  69              .subscribe(
  70                res => {
  71                  this.clientId = res.client_id
  72                  this.clientSecret = res.client_secret
  73                  console.log('Client credentials loaded.')
  74                },
  75
  76                error => {
  77                  let errorMessage = `Cannot retrieve OAuth Client credentials: ${error.text}. \n`
  78                  errorMessage += 'Ensure you have correctly configured PeerTube (config/ directory), in particular the "webserver" section.'
  79
  80                  // We put a bigger timeout
  81                  // This is an important message
  82                  this.notificationsService.error('Error', errorMessage, { timeOut: 7000 })
  83                }
  84              )
  85   }
  86
  87   getRefreshToken () {
  88     if (this.user === null) return null
  89
  90     return this.user.getRefreshToken()
  91   }
  92
  93   getRequestHeaderValue () {
  94     const accessToken = this.getAccessToken()
  95
  96     if (accessToken === null) return null
  97
  98     return `${this.getTokenType()} ${accessToken}`
  99   }
 100
 101   getAccessToken () {
 102     if (this.user === null) return null
 103
 104     return this.user.getAccessToken()
 105   }
 106
 107   getTokenType () {
 108     if (this.user === null) return null
 109
 110     return this.user.getTokenType()
 111   }
 112
 113   getUser () {
 114     return this.user
 115   }
 116
 117   isAdmin () {
 118     if (this.user === null) return false
 119
 120     return this.user.isAdmin()
 121   }
 122
 123   isLoggedIn () {
 124     return !!this.getAccessToken()
 125   }
 126
 127   login (username: string, password: string) {
 128     // Form url encoded
 129     const body = new HttpParams().set('client_id', this.clientId)
 130                                  .set('client_secret', this.clientSecret)
 131                                  .set('response_type', 'code')
 132                                  .set('grant_type', 'password')
 133                                  .set('scope', 'upload')
 134                                  .set('username', username)
 135                                  .set('password', password)
 136
 137     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 138
 139     return this.http.post<UserLogin>(AuthService.BASE_TOKEN_URL, body, { headers })
 140                     .map(res => Object.assign(res, { username }))
 141                     .flatMap(res => this.mergeUserInformation(res))
 142                     .map(res => this.handleLogin(res))
 143                     .catch(res => this.restExtractor.handleError(res))
 144   }
 145
 146   logout () {
 147     // TODO: make an HTTP request to revoke the tokens
 148     this.user = null
 149
 150     AuthUser.flush()
 151
 152     this.setStatus(AuthStatus.LoggedOut)
 153   }
 154
 155   refreshAccessToken () {
 156     console.log('Refreshing token...')
 157
 158     const refreshToken = this.getRefreshToken()
 159
 160     // Form url encoded
 161     const body = new HttpParams().set('refresh_token', refreshToken)
 162                                  .set('client_id', this.clientId)
 163                                  .set('client_secret', this.clientSecret)
 164                                  .set('response_type', 'code')
 165                                  .set('grant_type', 'refresh_token')
 166
 167     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 168
 169     return this.http.post<UserRefreshToken>(AuthService.BASE_TOKEN_URL, body, { headers })
 170                     .map(res => this.handleRefreshToken(res))
 171                     .catch(res => {
 172                       // The refresh token is invalid?
 173                       if (res.status === 400 && res.error.error === 'invalid_grant') {
 174                         console.error('Cannot refresh token -> logout...')
 175                         this.logout()
 176                         this.router.navigate(['/login'])
 177
 178                         return Observable.throw({
 179                           error: 'You need to reconnect.'
 180                         })
 181                       }
 182
 183                       return this.restExtractor.handleError(res)
 184                     })
 185   }
 186
 187   refreshUserInformation () {
 188     const obj = {
 189       access_token: this.user.getAccessToken(),
 190       refresh_token: null,
 191       token_type: this.user.getTokenType(),
 192       username: this.user.username
 193     }
 194
 195     this.mergeUserInformation(obj)
 196         .subscribe(
 197           res => {
 198             this.user.displayNSFW = res.displayNSFW
 199             this.user.role = res.role
 200
 201             this.user.save()
 202           }
 203         )
 204   }
 205
 206   private mergeUserInformation (obj: UserLoginWithUsername): Observable<UserLoginWithUserInformation> {
 207     // User is not loaded yet, set manually auth header
 208     const headers = new HttpHeaders().set('Authorization', `${obj.token_type} ${obj.access_token}`)
 209
 210     return this.http.get<User>(AuthService.BASE_USER_INFORMATION_URL, { headers })
 211                     .map(res => {
 212                       const newProperties = {
 213                         id: res.id as number,
 214                         role: res.role as UserRole,
 215                         displayNSFW: res.displayNSFW as boolean,
 216                         email: res.email as string
 217                       }
 218
 219                       return Object.assign(obj, newProperties)
 220                     }
 221     )
 222   }
 223
 224   private handleLogin (obj: UserLoginWithUserInformation) {
 225     const id = obj.id
 226     const username = obj.username
 227     const role = obj.role
 228     const email = obj.email
 229     const displayNSFW = obj.displayNSFW
 230     const hashTokens = {
 231       accessToken: obj.access_token,
 232       tokenType: obj.token_type,
 233       refreshToken: obj.refresh_token
 234     }
 235
 236     this.user = new AuthUser({ id, username, role, displayNSFW, email }, hashTokens)
 237     this.user.save()
 238
 239     this.setStatus(AuthStatus.LoggedIn)
 240   }
 241
 242   private handleRefreshToken (obj: UserRefreshToken) {
 243     this.user.refreshTokens(obj.access_token, obj.refresh_token)
 244     this.user.save()
 245   }
 246
 247   private setStatus (status: AuthStatus) {
 248     this.loginChanged.next(status)
 249   }
 250 }