登录增加最后登录时间地点，登录失败增加重试间隔

back/services/auth.ts

@@ -0,0 +1,103 @@
+import { Service, Inject } from 'typedi';
+import winston from 'winston';
+import { createRandomString, getFileContentByName } from '../config/util';
+import config from '../config';
+import * as fs from 'fs';
+import _ from 'lodash';
+import jwt from 'jsonwebtoken';
+
+@Service()
+export default class AuthService {
+  constructor(@Inject('logger') private logger: winston.Logger) {}
+
+  public async login(payloads: {
+    username: string;
+    password: string;
+    ip: string;
+    address: string;
+  }): Promise<any> {
+    if (!fs.existsSync(config.authConfigFile)) {
+      return this.initAuthInfo();
+    }
+
+    let { username, password, ip, address } = payloads;
+    const content = fs.readFileSync(config.authConfigFile, 'utf8');
+    const timestamp = Date.now();
+    if (content) {
+      const {
+        username: cUsername,
+        password: cPassword,
+        retries = 0,
+        lastlogon,
+        lastip,
+        lastaddr,
+      } = JSON.parse(content);
+      if (
+        (cUsername === 'admin' && cPassword === 'adminadmin') ||
+        !cUsername ||
+        !cPassword
+      ) {
+        return this.initAuthInfo();
+      }
+      if (username === cUsername && password === cPassword) {
+        const data = createRandomString(50, 100);
+        let token = jwt.sign({ data }, config.secret as any, {
+          expiresIn: 60 * 60 * 24 * 3,
+          algorithm: 'HS384',
+        });
+        fs.writeFileSync(
+          config.authConfigFile,
+          JSON.stringify({
+            ...JSON.parse(content),
+            token,
+            lastlogon: timestamp,
+            retries: 0,
+            lastip: ip,
+            lastaddr: address,
+          }),
+        );
+        return { code: 200, data: { token, lastip, lastaddr, lastlogon } };
+      } else {
+        if (
+          retries > 2 &&
+          Date.now() - lastlogon < Math.pow(3, retries) * 1000
+        ) {
+          return {
+            code: 400,
+            message: `失败次数过多，请${Math.round(
+              (Math.pow(3, retries) * 1000 - Date.now() + lastlogon) / 1000,
+            )}秒后重试`,
+          };
+        }
+        fs.writeFileSync(
+          config.authConfigFile,
+          JSON.stringify({
+            ...JSON.parse(content),
+            retries: retries + 1,
+            lastlogon: timestamp,
+            ip,
+            address,
+          }),
+        );
+        return { code: 400, message: config.authError };
+      }
+    } else {
+      return this.initAuthInfo();
+    }
+  }
+
+  private initAuthInfo() {
+    const newPassword = createRandomString(16, 22);
+    fs.writeFileSync(
+      config.authConfigFile,
+      JSON.stringify({
+        username: 'admin',
+        password: newPassword,
+      }),
+    );
+    return {
+      code: 100,
+      message: '已初始化密码，请前往auth.json查看并重新登录',
+    };
+  }
+}