recaptcha-v3.service.mjs 18 KB

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  1. import { isPlatformBrowser } from "@angular/common";
  2. import { Inject, Injectable, Optional, PLATFORM_ID } from "@angular/core";
  3. import { Subject } from "rxjs";
  4. import { loader } from "./load-script";
  5. import { RECAPTCHA_BASE_URL, RECAPTCHA_LANGUAGE, RECAPTCHA_NONCE, RECAPTCHA_V3_SITE_KEY } from "./tokens";
  6. import * as i0 from "@angular/core";
  7. /**
  8. * The main service for working with reCAPTCHA v3 APIs.
  9. *
  10. * Use the `execute` method for executing a single action, and
  11. * `onExecute` observable for listening to all actions at once.
  12. */
  13. export class ReCaptchaV3Service {
  14. constructor(zone, siteKey,
  15. // eslint-disable-next-line @typescript-eslint/ban-types
  16. platformId, baseUrl, nonce, language) {
  17. /** @internal */
  18. this.onLoadComplete = (grecaptcha) => {
  19. this.grecaptcha = grecaptcha;
  20. if (this.actionBacklog && this.actionBacklog.length > 0) {
  21. this.actionBacklog.forEach(([action, subject]) => this.executeActionWithSubject(action, subject));
  22. this.actionBacklog = undefined;
  23. }
  24. };
  25. this.zone = zone;
  26. this.isBrowser = isPlatformBrowser(platformId);
  27. this.siteKey = siteKey;
  28. this.nonce = nonce;
  29. this.language = language;
  30. this.baseUrl = baseUrl;
  31. this.init();
  32. }
  33. get onExecute() {
  34. if (!this.onExecuteSubject) {
  35. this.onExecuteSubject = new Subject();
  36. this.onExecuteObservable = this.onExecuteSubject.asObservable();
  37. }
  38. return this.onExecuteObservable;
  39. }
  40. get onExecuteError() {
  41. if (!this.onExecuteErrorSubject) {
  42. this.onExecuteErrorSubject = new Subject();
  43. this.onExecuteErrorObservable = this.onExecuteErrorSubject.asObservable();
  44. }
  45. return this.onExecuteErrorObservable;
  46. }
  47. /**
  48. * Executes the provided `action` with reCAPTCHA v3 API.
  49. * Use the emitted token value for verification purposes on the backend.
  50. *
  51. * For more information about reCAPTCHA v3 actions and tokens refer to the official documentation at
  52. * https://developers.google.com/recaptcha/docs/v3.
  53. *
  54. * @param {string} action the action to execute
  55. * @returns {Observable<string>} an `Observable` that will emit the reCAPTCHA v3 string `token` value whenever ready.
  56. * The returned `Observable` completes immediately after emitting a value.
  57. */
  58. execute(action) {
  59. const subject = new Subject();
  60. if (this.isBrowser) {
  61. if (!this.grecaptcha) {
  62. if (!this.actionBacklog) {
  63. this.actionBacklog = [];
  64. }
  65. this.actionBacklog.push([action, subject]);
  66. }
  67. else {
  68. this.executeActionWithSubject(action, subject);
  69. }
  70. }
  71. return subject.asObservable();
  72. }
  73. /** @internal */
  74. executeActionWithSubject(action, subject) {
  75. // eslint-disable-next-line @typescript-eslint/no-explicit-any
  76. const onError = (error) => {
  77. this.zone.run(() => {
  78. subject.error(error);
  79. if (this.onExecuteErrorSubject) {
  80. // We don't know any better at this point, unfortunately, so have to resort to `any`
  81. // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
  82. this.onExecuteErrorSubject.next({ action, error });
  83. }
  84. });
  85. };
  86. this.zone.runOutsideAngular(() => {
  87. try {
  88. this.grecaptcha.execute(this.siteKey, { action }).then((token) => {
  89. this.zone.run(() => {
  90. subject.next(token);
  91. subject.complete();
  92. if (this.onExecuteSubject) {
  93. this.onExecuteSubject.next({ action, token });
  94. }
  95. });
  96. }, onError);
  97. }
  98. catch (e) {
  99. onError(e);
  100. }
  101. });
  102. }
  103. /** @internal */
  104. init() {
  105. if (this.isBrowser) {
  106. if ("grecaptcha" in window) {
  107. this.grecaptcha = grecaptcha;
  108. }
  109. else {
  110. const langParam = this.language ? "&hl=" + this.language : "";
  111. loader.loadScript(this.siteKey, this.onLoadComplete, langParam, this.baseUrl, this.nonce);
  112. }
  113. }
  114. }
  115. static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.1", ngImport: i0, type: ReCaptchaV3Service, deps: [{ token: i0.NgZone }, { token: RECAPTCHA_V3_SITE_KEY }, { token: PLATFORM_ID }, { token: RECAPTCHA_BASE_URL, optional: true }, { token: RECAPTCHA_NONCE, optional: true }, { token: RECAPTCHA_LANGUAGE, optional: true }], target: i0.ɵɵFactoryTarget.Injectable }); }
  116. static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.0.1", ngImport: i0, type: ReCaptchaV3Service }); }
  117. }
  118. i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.1", ngImport: i0, type: ReCaptchaV3Service, decorators: [{
  119. type: Injectable
  120. }], ctorParameters: function () { return [{ type: i0.NgZone }, { type: undefined, decorators: [{
  121. type: Inject,
  122. args: [RECAPTCHA_V3_SITE_KEY]
  123. }] }, { type: Object, decorators: [{
  124. type: Inject,
  125. args: [PLATFORM_ID]
  126. }] }, { type: undefined, decorators: [{
  127. type: Optional
  128. }, {
  129. type: Inject,
  130. args: [RECAPTCHA_BASE_URL]
  131. }] }, { type: undefined, decorators: [{
  132. type: Optional
  133. }, {
  134. type: Inject,
  135. args: [RECAPTCHA_NONCE]
  136. }] }, { type: undefined, decorators: [{
  137. type: Optional
  138. }, {
  139. type: Inject,
  140. args: [RECAPTCHA_LANGUAGE]
  141. }] }]; } });
  142. //# 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{ isPlatformBrowser } from \"@angular/common\";\nimport { Inject, Injectable, NgZone, Optional, PLATFORM_ID } from \"@angular/core\";\nimport { Observable, Subject } from \"rxjs\";\n\nimport { loader } from \"./load-script\";\nimport { RECAPTCHA_BASE_URL, RECAPTCHA_LANGUAGE, RECAPTCHA_NONCE, RECAPTCHA_V3_SITE_KEY } from \"./tokens\";\n\nexport interface OnExecuteData {\n  /**\n   * The name of the action that has been executed.\n   */\n  action: string;\n  /**\n   * The token that reCAPTCHA v3 provided when executing the action.\n   */\n  token: string;\n}\n\nexport interface OnExecuteErrorData {\n  /**\n   * The name of the action that has been executed.\n   */\n  action: string;\n  /**\n   * The error which was encountered\n   */\n  // eslint-disable-next-line @typescript-eslint/no-explicit-any\n  error: any;\n}\n\ntype ActionBacklogEntry = [string, Subject<string>];\n\n/**\n * The main service for working with reCAPTCHA v3 APIs.\n *\n * Use the `execute` method for executing a single action, and\n * `onExecute` observable for listening to all actions at once.\n */\n@Injectable()\nexport class ReCaptchaV3Service {\n  /** @internal */\n  private readonly isBrowser: boolean;\n  /** @internal */\n  private readonly siteKey: string;\n  /** @internal */\n  private readonly zone: NgZone;\n  /** @internal */\n  private actionBacklog: ActionBacklogEntry[] | undefined;\n  /** @internal */\n  private nonce: string;\n  /** @internal */\n  private language?: string;\n  /** @internal */\n  private baseUrl: string;\n  /** @internal */\n  private grecaptcha: ReCaptchaV2.ReCaptcha;\n\n  /** @internal */\n  private onExecuteSubject: Subject<OnExecuteData>;\n  /** @internal */\n  private onExecuteErrorSubject: Subject<OnExecuteErrorData>;\n  /** @internal */\n  private onExecuteObservable: Observable<OnExecuteData>;\n  /** @internal */\n  private onExecuteErrorObservable: Observable<OnExecuteErrorData>;\n\n  constructor(\n    zone: NgZone,\n    @Inject(RECAPTCHA_V3_SITE_KEY) siteKey: string,\n    // eslint-disable-next-line @typescript-eslint/ban-types\n    @Inject(PLATFORM_ID) platformId: Object,\n    @Optional() @Inject(RECAPTCHA_BASE_URL) baseUrl?: string,\n    @Optional() @Inject(RECAPTCHA_NONCE) nonce?: string,\n    @Optional() @Inject(RECAPTCHA_LANGUAGE) language?: string,\n  ) {\n    this.zone = zone;\n    this.isBrowser = isPlatformBrowser(platformId);\n    this.siteKey = siteKey;\n    this.nonce = nonce;\n    this.language = language;\n    this.baseUrl = baseUrl;\n\n    this.init();\n  }\n\n  public get onExecute(): Observable<OnExecuteData> {\n    if (!this.onExecuteSubject) {\n      this.onExecuteSubject = new Subject<OnExecuteData>();\n      this.onExecuteObservable = this.onExecuteSubject.asObservable();\n    }\n\n    return this.onExecuteObservable;\n  }\n\n  public get onExecuteError(): Observable<OnExecuteErrorData> {\n    if (!this.onExecuteErrorSubject) {\n      this.onExecuteErrorSubject = new Subject<OnExecuteErrorData>();\n      this.onExecuteErrorObservable = this.onExecuteErrorSubject.asObservable();\n    }\n\n    return this.onExecuteErrorObservable;\n  }\n\n  /**\n   * Executes the provided `action` with reCAPTCHA v3 API.\n   * Use the emitted token value for verification purposes on the backend.\n   *\n   * For more information about reCAPTCHA v3 actions and tokens refer to the official documentation at\n   * https://developers.google.com/recaptcha/docs/v3.\n   *\n   * @param {string} action the action to execute\n   * @returns {Observable<string>} an `Observable` that will emit the reCAPTCHA v3 string `token` value whenever ready.\n   * The returned `Observable` completes immediately after emitting a value.\n   */\n  public execute(action: string): Observable<string> {\n    const subject = new Subject<string>();\n    if (this.isBrowser) {\n      if (!this.grecaptcha) {\n        if (!this.actionBacklog) {\n          this.actionBacklog = [];\n        }\n\n        this.actionBacklog.push([action, subject]);\n      } else {\n        this.executeActionWithSubject(action, subject);\n      }\n    }\n\n    return subject.asObservable();\n  }\n\n  /** @internal */\n  private executeActionWithSubject(action: string, subject: Subject<string>): void {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const onError = (error: any) => {\n      this.zone.run(() => {\n        subject.error(error);\n        if (this.onExecuteErrorSubject) {\n          // We don't know any better at this point, unfortunately, so have to resort to `any`\n          // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment\n          this.onExecuteErrorSubject.next({ action, error });\n        }\n      });\n    };\n\n    this.zone.runOutsideAngular(() => {\n      try {\n        this.grecaptcha.execute(this.siteKey, { action }).then((token: string) => {\n          this.zone.run(() => {\n            subject.next(token);\n            subject.complete();\n            if (this.onExecuteSubject) {\n              this.onExecuteSubject.next({ action, token });\n            }\n          });\n        }, onError);\n      } catch (e) {\n        onError(e);\n      }\n    });\n  }\n\n  /** @internal */\n  private init() {\n    if (this.isBrowser) {\n      if (\"grecaptcha\" in window) {\n        this.grecaptcha = grecaptcha;\n      } else {\n        const langParam = this.language ? \"&hl=\" + this.language : \"\";\n        loader.loadScript(this.siteKey, this.onLoadComplete, langParam, this.baseUrl, this.nonce);\n      }\n    }\n  }\n\n  /** @internal */\n  private onLoadComplete = (grecaptcha: ReCaptchaV2.ReCaptcha) => {\n    this.grecaptcha = grecaptcha;\n    if (this.actionBacklog && this.actionBacklog.length > 0) {\n      this.actionBacklog.forEach(([action, subject]) => this.executeActionWithSubject(action, subject));\n      this.actionBacklog = undefined;\n    }\n  };\n}\n"]}