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 {
  15   OAuthClientLocal,
  16   UserRole,
  17   UserRefreshToken,
  18   VideoChannel,
  19   User as UserServerModel
  20 } from '../../../../../shared'
  21 // Do not use the barrel (dependency loop)
  22 import { RestExtractor } from '../../shared/rest'
  23 import { UserLogin } from '../../../../../shared/models/users/user-login.model'
  24 import { UserConstructorHash } from '../../shared/users/user.model'
  25
  26 interface UserLoginWithUsername extends UserLogin {
  27   access_token: string
  28   refresh_token: string
  29   token_type: string
  30   username: string
  31 }
  32
  33 interface UserLoginWithUserInformation extends UserLogin {
  34   access_token: string
  35   refresh_token: string
  36   token_type: string
  37   username: string
  38   id: number
  39   role: UserRole
  40   displayNSFW: boolean
  41   email: string
  42   videoQuota: number
  43   author: {
  44     id: number
  45     uuid: string
  46   }
  47   videoChannels: VideoChannel[]
  48 }
  49
  50 @Injectable()
  51 export class AuthService {
  52   private static BASE_CLIENT_URL = API_URL + '/api/v1/oauth-clients/local'
  53   private static BASE_TOKEN_URL = API_URL + '/api/v1/users/token'
  54   private static BASE_USER_INFORMATION_URL = API_URL + '/api/v1/users/me'
  55
  56   loginChangedSource: Observable<AuthStatus>
  57
  58   private clientId: string
  59   private clientSecret: string
  60   private loginChanged: Subject<AuthStatus>
  61   private user: AuthUser = null
  62
  63   constructor (
  64     private http: HttpClient,
  65     private notificationsService: NotificationsService,
  66     private restExtractor: RestExtractor,
  67     private router: Router
  68    ) {
  69     this.loginChanged = new Subject<AuthStatus>()
  70     this.loginChangedSource = this.loginChanged.asObservable()
  71
  72     // Return null if there is nothing to load
  73     this.user = AuthUser.load()
  74   }
  75
  76   loadClientCredentials () {
  77     // Fetch the client_id/client_secret
  78     // FIXME: save in local storage?
  79     this.http.get<OAuthClientLocal>(AuthService.BASE_CLIENT_URL)
  80              .catch(res => this.restExtractor.handleError(res))
  81              .subscribe(
  82                res => {
  83                  this.clientId = res.client_id
  84                  this.clientSecret = res.client_secret
  85                  console.log('Client credentials loaded.')
  86                },
  87
  88                error => {
  89                  let errorMessage = `Cannot retrieve OAuth Client credentials: ${error.text}. \n`
  90                  errorMessage += 'Ensure you have correctly configured PeerTube (config/ directory), in particular the "webserver" section.'
  91
  92                  // We put a bigger timeout
  93                  // This is an important message
  94                  this.notificationsService.error('Error', errorMessage, { timeOut: 7000 })
  95                }
  96              )
  97   }
  98
  99   getRefreshToken () {
 100     if (this.user === null) return null
 101
 102     return this.user.getRefreshToken()
 103   }
 104
 105   getRequestHeaderValue () {
 106     const accessToken = this.getAccessToken()
 107
 108     if (accessToken === null) return null
 109
 110     return `${this.getTokenType()} ${accessToken}`
 111   }
 112
 113   getAccessToken () {
 114     if (this.user === null) return null
 115
 116     return this.user.getAccessToken()
 117   }
 118
 119   getTokenType () {
 120     if (this.user === null) return null
 121
 122     return this.user.getTokenType()
 123   }
 124
 125   getUser () {
 126     return this.user
 127   }
 128
 129   isLoggedIn () {
 130     return !!this.getAccessToken()
 131   }
 132
 133   login (username: string, password: string) {
 134     // Form url encoded
 135     const body = new HttpParams().set('client_id', this.clientId)
 136                                  .set('client_secret', this.clientSecret)
 137                                  .set('response_type', 'code')
 138                                  .set('grant_type', 'password')
 139                                  .set('scope', 'upload')
 140                                  .set('username', username)
 141                                  .set('password', password)
 142
 143     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 144
 145     return this.http.post<UserLogin>(AuthService.BASE_TOKEN_URL, body, { headers })
 146                     .map(res => Object.assign(res, { username }))
 147                     .flatMap(res => this.mergeUserInformation(res))
 148                     .map(res => this.handleLogin(res))
 149                     .catch(res => this.restExtractor.handleError(res))
 150   }
 151
 152   logout () {
 153     // TODO: make an HTTP request to revoke the tokens
 154     this.user = null
 155
 156     AuthUser.flush()
 157
 158     this.setStatus(AuthStatus.LoggedOut)
 159   }
 160
 161   refreshAccessToken () {
 162     console.log('Refreshing token...')
 163
 164     const refreshToken = this.getRefreshToken()
 165
 166     // Form url encoded
 167     const body = new HttpParams().set('refresh_token', refreshToken)
 168                                  .set('client_id', this.clientId)
 169                                  .set('client_secret', this.clientSecret)
 170                                  .set('response_type', 'code')
 171                                  .set('grant_type', 'refresh_token')
 172
 173     const headers = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
 174
 175     return this.http.post<UserRefreshToken>(AuthService.BASE_TOKEN_URL, body, { headers })
 176                     .map(res => this.handleRefreshToken(res))
 177                     .catch(res => {
 178                       // The refresh token is invalid?
 179                       if (res.status === 400 && res.error.error === 'invalid_grant') {
 180                         console.error('Cannot refresh token -> logout...')
 181                         this.logout()
 182                         this.router.navigate(['/login'])
 183
 184                         return Observable.throw({
 185                           error: 'You need to reconnect.'
 186                         })
 187                       }
 188
 189                       return this.restExtractor.handleError(res)
 190                     })
 191   }
 192
 193   refreshUserInformation () {
 194     const obj = {
 195       access_token: this.user.getAccessToken(),
 196       refresh_token: null,
 197       token_type: this.user.getTokenType(),
 198       username: this.user.username
 199     }
 200
 201     this.mergeUserInformation(obj)
 202         .subscribe(
 203           res => {
 204             this.user.displayNSFW = res.displayNSFW
 205             this.user.role = res.role
 206             this.user.videoChannels = res.videoChannels
 207             this.user.author = res.author
 208
 209             this.user.save()
 210           }
 211         )
 212   }
 213
 214   private mergeUserInformation (obj: UserLoginWithUsername): Observable<UserLoginWithUserInformation> {
 215     // User is not loaded yet, set manually auth header
 216     const headers = new HttpHeaders().set('Authorization', `${obj.token_type} ${obj.access_token}`)
 217
 218     return this.http.get<UserServerModel>(AuthService.BASE_USER_INFORMATION_URL, { headers })
 219                     .map(res => {
 220                       const newProperties = {
 221                         id: res.id,
 222                         role: res.role,
 223                         displayNSFW: res.displayNSFW,
 224                         email: res.email,
 225                         videoQuota: res.videoQuota,
 226                         author: res.author,
 227                         videoChannels: res.videoChannels
 228                       }
 229
 230                       return Object.assign(obj, newProperties)
 231                     }
 232     )
 233   }
 234
 235   private handleLogin (obj: UserLoginWithUserInformation) {
 236     const hashUser: UserConstructorHash = {
 237       id: obj.id,
 238       username: obj.username,
 239       role: obj.role,
 240       email: obj.email,
 241       displayNSFW: obj.displayNSFW,
 242       videoQuota: obj.videoQuota,
 243       videoChannels: obj.videoChannels,
 244       author: obj.author
 245     }
 246     const hashTokens = {
 247       accessToken: obj.access_token,
 248       tokenType: obj.token_type,
 249       refreshToken: obj.refresh_token
 250     }
 251
 252     this.user = new AuthUser(hashUser, hashTokens)
 253     this.user.save()
 254
 255     this.setStatus(AuthStatus.LoggedIn)
 256   }
 257
 258   private handleRefreshToken (obj: UserRefreshToken) {
 259     this.user.refreshTokens(obj.access_token, obj.refresh_token)
 260     this.user.save()
 261   }
 262
 263   private setStatus (status: AuthStatus) {
 264     this.loginChanged.next(status)
 265   }
 266 }