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Angular - commonly needed directives and services

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/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { DOCUMENT, ɵparseCookieValue as parseCookieValue } from '@angular/common'; import { EnvironmentInjector, Inject, inject, Injectable, InjectionToken, PLATFORM_ID } from '@angular/core'; import * as i0 from "@angular/core"; export const XSRF_ENABLED = new InjectionToken('XSRF_ENABLED'); export const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN'; export const XSRF_COOKIE_NAME = new InjectionToken('XSRF_COOKIE_NAME', { providedIn: 'root', factory: () => XSRF_DEFAULT_COOKIE_NAME, }); export const XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN'; export const XSRF_HEADER_NAME = new InjectionToken('XSRF_HEADER_NAME', { providedIn: 'root', factory: () => XSRF_DEFAULT_HEADER_NAME, }); /** * Retrieves the current XSRF token to use with the next outgoing request. * * @publicApi */ export class HttpXsrfTokenExtractor { } /** * `HttpXsrfTokenExtractor` which retrieves the token from a cookie. */ export class HttpXsrfCookieExtractor { constructor(doc, platform, cookieName) { this.doc = doc; this.platform = platform; this.cookieName = cookieName; this.lastCookieString = ''; this.lastToken = null; /** * @internal for testing */ this.parseCount = 0; } getToken() { if (this.platform === 'server') { return null; } const cookieString = this.doc.cookie || ''; if (cookieString !== this.lastCookieString) { this.parseCount++; this.lastToken = parseCookieValue(cookieString, this.cookieName); this.lastCookieString = cookieString; } return this.lastToken; } } HttpXsrfCookieExtractor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfCookieExtractor, deps: [{ token: DOCUMENT }, { token: PLATFORM_ID }, { token: XSRF_COOKIE_NAME }], target: i0.ɵɵFactoryTarget.Injectable }); HttpXsrfCookieExtractor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfCookieExtractor }); i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfCookieExtractor, decorators: [{ type: Injectable }], ctorParameters: function () { return [{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT] }] }, { type: undefined, decorators: [{ type: Inject, args: [PLATFORM_ID] }] }, { type: undefined, decorators: [{ type: Inject, args: [XSRF_COOKIE_NAME] }] }]; } }); export function xsrfInterceptorFn(req, next) { const lcUrl = req.url.toLowerCase(); // Skip both non-mutating requests and absolute URLs. // Non-mutating requests don't require a token, and absolute URLs require special handling // anyway as the cookie set // on our origin is not the same as the token expected by another origin. if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD' || lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) { return next(req); } const token = inject(HttpXsrfTokenExtractor).getToken(); const headerName = inject(XSRF_HEADER_NAME); // Be careful not to overwrite an existing header of the same name. if (token != null && !req.headers.has(headerName)) { req = req.clone({ headers: req.headers.set(headerName, token) }); } return next(req); } /** * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests. */ export class HttpXsrfInterceptor { constructor(injector) { this.injector = injector; } intercept(initialRequest, next) { return this.injector.runInContext(() => xsrfInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest))); } } HttpXsrfInterceptor.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); HttpXsrfInterceptor.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfInterceptor }); i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "15.2.1", ngImport: i0, type: HttpXsrfInterceptor, decorators: [{ type: Injectable }], ctorParameters: function () { return [{ type: i0.EnvironmentInjector }]; } }); //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {DOCUMENT, ɵparseCookieValue as parseCookieValue} from '@angular/common';\nimport {EnvironmentInjector, Inject, inject, Injectable, InjectionToken, PLATFORM_ID} from '@angular/core';\nimport {Observable} from 'rxjs';\n\nimport {HttpHandler} from './backend';\nimport {HttpHandlerFn, HttpInterceptor} from './interceptor';\nimport {HttpRequest} from './request';\nimport {HttpEvent} from './response';\n\nexport const XSRF_ENABLED = new InjectionToken<boolean>('XSRF_ENABLED');\n\nexport const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nexport const XSRF_COOKIE_NAME = new InjectionToken<string>('XSRF_COOKIE_NAME', {\n  providedIn: 'root',\n  factory: () => XSRF_DEFAULT_COOKIE_NAME,\n});\n\nexport const XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';\nexport const XSRF_HEADER_NAME = new InjectionToken<string>('XSRF_HEADER_NAME', {\n  providedIn: 'root',\n  factory: () => XSRF_DEFAULT_HEADER_NAME,\n});\n\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\nexport abstract class HttpXsrfTokenExtractor {\n  /**\n   * Get the XSRF token to use with an outgoing request.\n   *\n   * Will be called for every request, so the token may change between requests.\n   */\n  abstract getToken(): string|null;\n}\n\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\n@Injectable()\nexport class HttpXsrfCookieExtractor implements HttpXsrfTokenExtractor {\n  private lastCookieString: string = '';\n  private lastToken: string|null = null;\n\n  /**\n   * @internal for testing\n   */\n  parseCount: number = 0;\n\n  constructor(\n      @Inject(DOCUMENT) private doc: any, @Inject(PLATFORM_ID) private platform: string,\n      @Inject(XSRF_COOKIE_NAME) private cookieName: string) {}\n\n  getToken(): string|null {\n    if (this.platform === 'server') {\n      return null;\n    }\n    const cookieString = this.doc.cookie || '';\n    if (cookieString !== this.lastCookieString) {\n      this.parseCount++;\n      this.lastToken = parseCookieValue(cookieString, this.cookieName);\n      this.lastCookieString = cookieString;\n    }\n    return this.lastToken;\n  }\n}\n\nexport function xsrfInterceptorFn(\n    req: HttpRequest<unknown>, next: HttpHandlerFn): Observable<HttpEvent<unknown>> {\n  const lcUrl = req.url.toLowerCase();\n  // Skip both non-mutating requests and absolute URLs.\n  // Non-mutating requests don't require a token, and absolute URLs require special handling\n  // anyway as the cookie set\n  // on our origin is not the same as the token expected by another origin.\n  if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD' ||\n      lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) {\n    return next(req);\n  }\n\n  const token = inject(HttpXsrfTokenExtractor).getToken();\n  const headerName = inject(XSRF_HEADER_NAME);\n\n  // Be careful not to overwrite an existing header of the same name.\n  if (token != null && !req.headers.has(headerName)) {\n    req = req.clone({headers: req.headers.set(headerName, token)});\n  }\n  return next(req);\n}\n\n/**\n * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\n@Injectable()\nexport class HttpXsrfInterceptor implements HttpInterceptor {\n  constructor(private injector: EnvironmentInjector) {}\n\n  intercept(initialRequest: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {\n    return this.injector.runInContext(\n        () =>\n            xsrfInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));\n  }\n}\n"]}