如何在React Native + Expo下使用SAML对Firebase中的用户进行身份验证

npm install firebase react-native-app-auth react-native-inappbrowser-reborn

import * as AppAuth from 'react-native-app-auth';
import { AppAuthConfiguration } from 'react-native-app-auth';

// 创建Firebase配置对象
const config = {
  issuer: 'YOUR_ISSUER_ID',
  clientId: 'YOUR_CLIENT_ID',
  redirectUrl: 'YOUR_REDIRECT_URL',
  scopes: ['openid', 'email', 'profile'],
  additionalParameters: {},
};

// 创建SAML身份验证配置对象
const samlConfig = {
  issuer: 'YOUR_ISSUER_ID',
  clientId: 'YOUR_CLIENT_ID',
  redirectUrl: 'YOUR_REDIRECT_URL',
  additionalParameters: {},
  serviceConfiguration: {
    authorizationEndpoint: 'SAML_AUTHORIZATION_ENDPOINT',
    tokenEndpoint: 'SAML_TOKEN_ENDPOINT',
    revocationEndpoint: 'SAML_REVOCATION_ENDPOINT',
  },
};

// 创建SAML身份验证实例
const samlAuth = new AppAuth.SAMLAuth(samlConfig);

// 获取SAML身份验证URL
export const getSAMLAuthUrl = async () => {
  const { authorizationUrl } = await samlAuth.makeAuthUrlAsync();

  return authorizationUrl;
};

// 处理SAML身份验证的回调
export const handleSAMLResponse = async (url) => {
  const response = await samlAuth.makeTokenRequestAsync({ url });

  if (response && response.accessToken) {
    // 使用Firebase进行身份验证
    const firebaseResponse = await AppAuth.auth().signInWithIdToken(response.idToken, response.accessToken);

    return firebaseResponse;
  }

  return null;
};

import React, { useEffect } from 'react';
import { View, Button } from 'react-native';
import { Linking } from 'expo';
import { getSAMLAuthUrl, handleSAMLResponse } from './saml';

export default function App() {
  useEffect(() => {
    // 处理SAML身份验证回调
    const handleUrl = async (event) => {
      const { url } = event;

      if (url && url.startsWith('YOUR_REDIRECT_URL')) {
        const firebaseResponse = await handleSAMLResponse(url);

        // 处理Firebase身份验证结果
        if (firebaseResponse) {
          // 身份验证成功
          console.log('Authentication successful');
        } else {
          // 身份验证失败
          console.log('Authentication failed');
        }
      }
    };

    // 添加URL监听器
    Linking.addEventListener('url', handleUrl);

    // 清除URL监听器
    return () => {
      Linking.removeEventListener('url', handleUrl);
    };
  }, []);

  // 处理SAML身份验证按钮点击事件
  const handleSAMLButtonClick = async () => {
    const authUrl = await getSAMLAuthUrl();

    // 在浏览器中打开SAML身份验证URL
    await Linking.openURL(authUrl);
  };

  return (
    <View>
      <Button title="SAML Authentication" onPress={handleSAMLButtonClick} />
    </View>
  );
}