@angular/common
Version:
Angular - commonly needed directives and services
108 lines • 13.9 kB
JavaScript
/**
* @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, runInInjectionContext, } from '@angular/core';
import * as i0 from "@angular/core";
export const XSRF_ENABLED = new InjectionToken(ngDevMode ? 'XSRF_ENABLED' : '');
export const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';
export const XSRF_COOKIE_NAME = new InjectionToken(ngDevMode ? '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(ngDevMode ? '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;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfCookieExtractor, deps: [{ token: DOCUMENT }, { token: PLATFORM_ID }, { token: XSRF_COOKIE_NAME }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfCookieExtractor }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfCookieExtractor, decorators: [{
type: Injectable
}], ctorParameters: () => [{ 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 runInInjectionContext(this.injector, () => xsrfInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)));
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfInterceptor }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.9", ngImport: i0, type: HttpXsrfInterceptor, decorators: [{
type: Injectable
}], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });
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'XSRF_ENABLED' : '');\n\nexport const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nexport const XSRF_COOKIE_NAME = new InjectionToken<string>(ngDevMode ? '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>(ngDevMode ? '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,\n    @Inject(PLATFORM_ID) private platform: string,\n    @Inject(XSRF_COOKIE_NAME) private cookieName: string,\n  ) {}\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>,\n  next: HttpHandlerFn,\n): 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 (\n    !inject(XSRF_ENABLED) ||\n    req.method === 'GET' ||\n    req.method === 'HEAD' ||\n    lcUrl.startsWith('http://') ||\n    lcUrl.startsWith('https://')\n  ) {\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 runInInjectionContext(this.injector, () =>\n      xsrfInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)),\n    );\n  }\n}\n"]}