Open-ILS/src/eg2/src/app/staff/resolver.service.ts

   1 import {Injectable} from '@angular/core';
   2 import {Location} from '@angular/common';
   3 import {Observable, Observer, of} from 'rxjs';
   4 import {Router, Resolve, RouterStateSnapshot,
   5         ActivatedRoute, ActivatedRouteSnapshot} from '@angular/router';
   6 import {StoreService} from '@eg/core/store.service';
   7 import {NetService} from '@eg/core/net.service';
   8 import {AuthService, AuthWsState} from '@eg/core/auth.service';
   9 import {PermService} from '@eg/core/perm.service';
  10 import {OrgService} from '@eg/core/org.service';
  11 import {FormatService} from '@eg/core/format.service';
  12 import {HatchService} from '@eg/core/hatch.service';
  13
  14 const LOGIN_PATH = '/staff/login';
  15 const WS_MANAGE_PATH = '/staff/admin/workstation/workstations/manage';
  16
  17 /**
  18  * Load data used by all staff modules.
  19  */
  20 @Injectable()
  21 export class StaffResolver implements Resolve<Observable<any>> {
  22
  23     // Tracks the primary resolve observable.
  24     observer: Observer<any>;
  25
  26     constructor(
  27         private router: Router,
  28         private route: ActivatedRoute,
  29         private ngLocation: Location,
  30         private hatch: HatchService,
  31         private store: StoreService,
  32         private org: OrgService,
  33         private net: NetService,
  34         private auth: AuthService,
  35         private perm: PermService,
  36         private format: FormatService
  37     ) {}
  38
  39     resolve(
  40         route: ActivatedRouteSnapshot,
  41         state: RouterStateSnapshot): Observable<any> {
  42
  43         this.hatch.connect();
  44
  45         // Staff cookies stay in /$base/staff/
  46         // NOTE: storing session data at '/' so it can be shared by
  47         // Angularjs apps.
  48         this.store.loginSessionBasePath = '/';
  49         // ^-- = this.ngLocation.prepareExternalUrl('/staff');
  50
  51         // Not sure how to get the path without params... using this for now.
  52         const path = state.url.split('?')[0];
  53         if (path === '/staff/login') {
  54             return of(true);
  55         }
  56
  57         const observable: Observable<any>
  58             = Observable.create(o => this.observer = o);
  59
  60         this.auth.testAuthToken().then(
  61             tokenOk => {
  62                 this.confirmStaffPerms().then(
  63                     hasPerms => {
  64                         this.auth.verifyWorkstation().then(
  65                             wsOk => {
  66                                 this.loadStartupData()
  67                                 .then(ok => this.observer.complete());
  68                             },
  69                             wsNotOk => this.handleInvalidWorkstation(path)
  70                         );
  71                     },
  72                     hasNotPerms => {
  73                         this.observer.error(
  74                             'User does not have staff permissions');
  75                     }
  76                 );
  77             },
  78             tokenNotOk => this.handleInvalidToken(state)
  79         );
  80
  81         return observable;
  82     }
  83
  84
  85     // Confirm the user has the STAFF_LOGIN permission anywhere before
  86     // allowing the staff sub-tree to load. This will prevent users
  87     // with valid, non-staff authtokens from attempting to connect and
  88     // subsequently getting redirected to the workstation admin page
  89     // (since they won't have a valid WS either).
  90     confirmStaffPerms(): Promise<any> {
  91         return new Promise((resolve, reject) => {
  92             this.perm.hasWorkPermAt(['STAFF_LOGIN']).then(
  93                 permMap => {
  94                     if (permMap.STAFF_LOGIN.length) {
  95                         resolve('perm check OK');
  96                     } else {
  97                         reject('perm check faield');
  98                     }
  99                 }
 100             );
 101         });
 102     }
 103
 104
 105     // A page that's not the login page was requested without a
 106     // valid auth token.  Send the caller back to the login page.
 107     handleInvalidToken(state: RouterStateSnapshot): void {
 108         console.debug('StaffResolver: authtoken is not valid');
 109         this.auth.redirectUrl = state.url;
 110         this.router.navigate([LOGIN_PATH]);
 111         this.observer.error('invalid or no auth token');
 112     }
 113
 114     handleInvalidWorkstation(path: string): void {
 115
 116         if (path.startsWith(WS_MANAGE_PATH)) {
 117             // user is navigating to the WS admin page.
 118             this.observer.complete();
 119         } else {
 120             this.router.navigate([WS_MANAGE_PATH]);
 121             this.observer.error(`Auth session linked to no
 122                 workstation or a workstation unknown to this browser`);
 123         }
 124     }
 125
 126     /**
 127      * Fetches data common to all staff interfaces.
 128      */
 129     loadStartupData(): Promise<void> {
 130
 131         // Fetch settings needed globally.  This will cache the values
 132         // in the org service.
 133         return this.org.settings([
 134             'lib.timezone',
 135             'webstaff.format.dates',
 136             'webstaff.format.date_and_time',
 137             'ui.staff.max_recent_patrons',
 138             'ui.staff.angular_catalog.enabled' // navbar
 139         ]).then(settings => {
 140             // Avoid clobbering defaults
 141             if (settings['lib.timezone']) {
 142                 this.format.wsOrgTimezone = settings['lib.timezone'];
 143             }
 144             if (settings['webstaff.format.dates']) {
 145                 this.format.dateFormat = settings['webstaff.format.dates'];
 146             }
 147             if (settings['webstaff.format.date_and_time']) {
 148                 this.format.dateTimeFormat =
 149                     settings['webstaff.format.date_and_time'];
 150             }
 151         });
 152     }
 153 }
 154