@knora/core
Version:
Knora ui module: core
165 lines • 21.8 kB
JavaScript
import * as tslib_1 from "tslib";
import { Inject, Injectable } from '@angular/core';
import { ApiResponseData, ApiResponseError, CredentialsResponse, KnoraApiConfig, KnoraApiConnection, UserResponse, Constants } from '@knora/api';
import * as momentImported from 'moment';
import { KnoraApiConfigToken, KnoraApiConnectionToken } from './core.module';
import * as i0 from "@angular/core";
import * as i1 from "./core.module";
const moment = momentImported;
let SessionService = class SessionService {
constructor(knoraApiConnection, knoraApiConfig) {
this.knoraApiConnection = knoraApiConnection;
this.knoraApiConfig = knoraApiConfig;
/**
* max session time in milliseconds
* default value (24h): 86400000
*
*/
this.MAX_SESSION_TIME = 86400000; // 1d = 24 * 60 * 60 * 1000
}
/**
* set the session by using the json web token (jwt) and the user object;
* it will be used in the login process
*
* @param jwt
* @param username
*/
setSession(jwt, identifier, identifierType) {
let session;
this.updateKnoraApiConnection(jwt);
// get user information
this.knoraApiConnection.admin.usersEndpoint.getUser(identifierType, identifier).subscribe((response) => {
let sysAdmin = false;
const projectAdmin = [];
// get permission inforamation: a) is user sysadmin? b) get list of project iris where user is project admin
const groupsPerProjectKeys = Object.keys(response.body.user.permissions.groupsPerProject);
for (const key of groupsPerProjectKeys) {
if (key === Constants.SystemProjectIRI) {
sysAdmin = response.body.user.permissions.groupsPerProject[key].indexOf(Constants.SystemAdminGroupIRI) > -1;
}
if (response.body.user.permissions.groupsPerProject[key].indexOf(Constants.ProjectAdminGroupIRI) > -1) {
projectAdmin.push(key);
}
}
// store session information in browser's localstorage
session = {
id: this.setTimestamp(),
user: {
name: response.body.user.username,
jwt: jwt,
lang: response.body.user.lang,
sysAdmin: sysAdmin,
projectAdmin: projectAdmin
}
};
// update localStorage
localStorage.setItem('session', JSON.stringify(session));
}, (error) => {
localStorage.removeItem('session');
console.error(error);
});
}
/**
* Validate intern session and check knora api credentials if necessary.
* If a json web token exists, it doesn't mean, that the knora api credentials are still valid.
*
* @returns boolean
*/
validateSession() {
// mix of checks with session.validation and this.authenticate
const session = JSON.parse(localStorage.getItem('session'));
const tsNow = this.setTimestamp();
if (session) {
this.updateKnoraApiConnection(session.user.jwt);
// check if the session is still valid:
if (session.id + this.MAX_SESSION_TIME <= tsNow) {
// the internal (knora-ui) session has expired
// check if the api credentails are still valid
// console.error('session is not valid; check knora api credentials');
this.knoraApiConnection.v2.auth.checkCredentials().subscribe((response) => {
// the knora api credentials are still valid
// console.log('knora api credentials', response);
// refresh the jwt in @knora/api
this.updateKnoraApiConnection(session.user.jwt);
// update the session.id
session.id = tsNow;
localStorage.setItem('session', JSON.stringify(session));
// console.log('knora api credentials are valid; return', true);
return true;
}, (error) => {
// a user is not authenticated anymore!
// console.error('session.service -- validateSession -- authenticate: the session expired on API side');
this.destroySession();
// console.warn('knora api credentials are not valid; return', false);
return false;
});
}
else {
// the internal (knora-ui) session is still valid
// console.log('session is valid; return', true);
return true;
}
}
else {
// no session found; update knora api connection with empty jwt
this.updateKnoraApiConnection();
// console.warn('session is not valid; return', false);
return false;
}
}
/**
* update the session storage
* @param jwt
* @param username
*
* @returns boolean
*/
updateSession(jwt, username) {
if (jwt && username) {
this.setSession(jwt, username, 'username');
return true;
}
else {
return false;
}
}
/**
* Destroy session by removing the session from local storage
*
*/
destroySession() {
localStorage.removeItem('session');
}
/**
* Update the knora-api-config and knora-api-connection of @knora/api
*
* @param {string} jwt?
*/
updateKnoraApiConnection(jwt) {
this.knoraApiConfig.jsonWebToken = (jwt ? jwt : '');
this.knoraApiConnection = new KnoraApiConnection(this.knoraApiConfig);
}
/**
* Convert a timestamp in a number
* @returns number
*/
setTimestamp() {
return (moment().add(0, 'second')).valueOf();
}
};
SessionService.ctorParameters = () => [
{ type: KnoraApiConnection, decorators: [{ type: Inject, args: [KnoraApiConnectionToken,] }] },
{ type: KnoraApiConfig, decorators: [{ type: Inject, args: [KnoraApiConfigToken,] }] }
];
SessionService.ngInjectableDef = i0.ɵɵdefineInjectable({ factory: function SessionService_Factory() { return new SessionService(i0.ɵɵinject(i1.KnoraApiConnectionToken), i0.ɵɵinject(i1.KnoraApiConfigToken)); }, token: SessionService, providedIn: "root" });
SessionService = tslib_1.__decorate([
Injectable({
providedIn: 'root'
}),
tslib_1.__param(0, Inject(KnoraApiConnectionToken)),
tslib_1.__param(1, Inject(KnoraApiConfigToken)),
tslib_1.__metadata("design:paramtypes", [KnoraApiConnection,
KnoraApiConfig])
], SessionService);
export { SessionService };
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{ Inject, Injectable } from '@angular/core';\nimport { ApiResponseData, ApiResponseError, CredentialsResponse, KnoraApiConfig, KnoraApiConnection, UserResponse, Constants } from '@knora/api';\nimport * as momentImported from 'moment';\n\nimport { KnoraApiConfigToken, KnoraApiConnectionToken } from './core.module';\nimport { KnoraConstants } from './declarations';\n\n/**\n * Currently logged-in user information\n */\nexport interface CurrentUser {\n    // username\n    name: string;\n\n    // json web token\n    jwt: string;\n\n    // default language for ui\n    lang: string;\n\n    // is system admin?\n    sysAdmin: boolean;\n\n    // list of project shortcodes where the user is project admin\n    projectAdmin: string[];\n}\n\n/**\n * Session with id (= login timestamp) and inforamtion about logged-in user\n */\nexport interface Session {\n    id: number;\n    user: CurrentUser;\n}\n\nconst moment = momentImported;\n\n@Injectable({\n    providedIn: 'root'\n})\nexport class SessionService {\n\n    /**\n    * max session time in milliseconds\n    * default value (24h): 86400000\n    *\n    */\n    readonly MAX_SESSION_TIME: number = 86400000; // 1d = 24 * 60 * 60 * 1000\n\n\n    constructor(\n        @Inject(KnoraApiConnectionToken) private knoraApiConnection: KnoraApiConnection,\n        @Inject(KnoraApiConfigToken) private knoraApiConfig: KnoraApiConfig\n    ) { }\n\n\n\n    /**\n       * set the session by using the json web token (jwt) and the user object;\n       * it will be used in the login process\n       *\n       * @param jwt\n       * @param username\n       */\n    setSession(jwt: string, identifier: string, identifierType: 'email' | 'username') {\n\n        let session: Session;\n\n        this.updateKnoraApiConnection(jwt);\n\n        // get user information\n        this.knoraApiConnection.admin.usersEndpoint.getUser(identifierType, identifier).subscribe(\n            (response: ApiResponseData<UserResponse>) => {\n                let sysAdmin: boolean = false;\n                const projectAdmin: string[] = [];\n\n                // get permission inforamation: a) is user sysadmin? b) get list of project iris where user is project admin\n                const groupsPerProjectKeys: string[] = Object.keys(response.body.user.permissions.groupsPerProject);\n\n                for (const key of groupsPerProjectKeys) {\n                    if (key === Constants.SystemProjectIRI) {\n                        sysAdmin = response.body.user.permissions.groupsPerProject[key].indexOf(Constants.SystemAdminGroupIRI) > -1;\n                    }\n\n                    if (response.body.user.permissions.groupsPerProject[key].indexOf(Constants.ProjectAdminGroupIRI) > -1) {\n                        projectAdmin.push(key);\n                    }\n                }\n\n                // store session information in browser's localstorage\n                session = {\n                    id: this.setTimestamp(),\n                    user: {\n                        name: response.body.user.username,\n                        jwt: jwt,\n                        lang: response.body.user.lang,\n                        sysAdmin: sysAdmin,\n                        projectAdmin: projectAdmin\n                    }\n                };\n                // update localStorage\n                localStorage.setItem('session', JSON.stringify(session));\n            },\n            (error: ApiResponseError) => {\n                localStorage.removeItem('session');\n                console.error(error);\n            }\n        );\n    }\n\n    /**\n     * Validate intern session and check knora api credentials if necessary.\n     * If a json web token exists, it doesn't mean, that the knora api credentials are still valid.\n     *\n     * @returns boolean\n     */\n    validateSession(): boolean {\n        // mix of checks with session.validation and this.authenticate\n        const session = JSON.parse(localStorage.getItem('session'));\n\n        const tsNow: number = this.setTimestamp();\n\n        if (session) {\n\n            this.updateKnoraApiConnection(session.user.jwt);\n\n            // check if the session is still valid:\n            if (session.id + this.MAX_SESSION_TIME <= tsNow) {\n                // the internal (knora-ui) session has expired\n                // check if the api credentails are still valid\n\n                // console.error('session is not valid; check knora api credentials');\n\n                this.knoraApiConnection.v2.auth.checkCredentials().subscribe(\n                    (response: ApiResponseData<CredentialsResponse>) => {\n                        // the knora api credentials are still valid\n                        // console.log('knora api credentials', response);\n\n                        // refresh the jwt in @knora/api\n                        this.updateKnoraApiConnection(session.user.jwt);\n\n                        // update the session.id\n                        session.id = tsNow;\n\n                        localStorage.setItem('session', JSON.stringify(session));\n\n                        // console.log('knora api credentials are valid; return', true);\n                        return true;\n                    },\n                    (error: ApiResponseError) => {\n                        // a user is not authenticated anymore!\n                        // console.error('session.service -- validateSession -- authenticate: the session expired on API side');\n\n                        this.destroySession();\n\n                        // console.warn('knora api credentials are not valid; return', false);\n                        return false;\n                    }\n                );\n\n            } else {\n                // the internal (knora-ui) session is still valid\n\n                // console.log('session is valid; return', true);\n                return true;\n            }\n        } else {\n            // no session found; update knora api connection with empty jwt\n            this.updateKnoraApiConnection();\n\n            // console.warn('session is not valid; return', false);\n            return false;\n        }\n    }\n\n    /**\n     * update the session storage\n     * @param jwt\n     * @param username\n     *\n     * @returns boolean\n     */\n    updateSession(jwt: string, username: string): boolean {\n        if (jwt && username) {\n            this.setSession(jwt, username, 'username');\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * Destroy session by removing the session from local storage\n     *\n     */\n    destroySession() {\n        localStorage.removeItem('session');\n    }\n\n    /**\n     * Update the knora-api-config and knora-api-connection of @knora/api\n     *\n     * @param  {string} jwt?\n     */\n    private updateKnoraApiConnection(jwt?: string) {\n        this.knoraApiConfig.jsonWebToken = (jwt ? jwt : '');\n        this.knoraApiConnection = new KnoraApiConnection(this.knoraApiConfig);\n    }\n\n    /**\n     * Convert a timestamp in a number\n     * @returns number\n     */\n    private setTimestamp(): number {\n        return (moment().add(0, 'second')).valueOf();\n    }\n\n\n}\n"]}