feat: Remote Judge for Luogu (#34)

remote_judger/package-lock.json

@@ -12,6 +12,7 @@
         "crlf-normalize": "^1.0.18",
         "fs-extra": "^11.1.0",
         "jsdom": "^21.0.0",
+        "lodash.flattendeep": "^4.4.0",
         "math-sum": "^2.0.0",
         "reggol": "^1.3.4",
         "superagent": "^8.0.6",
@@ -21,6 +22,7 @@
         "@types/fs-extra": "^11.0.1",
         "@types/js-yaml": "^4.0.5",
         "@types/jsdom": "^20.0.1",
+        "@types/lodash.flattendeep": "^4.4.7",
         "@types/node": "^18.11.18",
         "@types/superagent": "^4.1.16",
         "@types/superagent-proxy": "^3.0.0",
@@ -78,6 +80,21 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
+    "node_modules/@types/lodash.flattendeep": {
+      "version": "4.4.7",
+      "resolved": "https://registry.npmjs.org/@types/lodash.flattendeep/-/lodash.flattendeep-4.4.7.tgz",
+      "integrity": "sha512-1h6GW/AeZw/Wej6uxrqgmdTDZX1yFS39lRsXYkg+3kWvOWWrlGCI6H7lXxlUHOzxDT4QeYGmgPpQ3BX9XevzOg==",
+      "dev": true,
+      "dependencies": {
+        "@types/lodash": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "18.11.18",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-18.11.18.tgz",
@@ -790,6 +807,11 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/lodash.flattendeep": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.flattendeep/-/lodash.flattendeep-4.4.0.tgz",
+      "integrity": "sha512-uHaJFihxmJcEX3kT4I23ABqKKalJ/zDrDg0lsFtc1h+3uw49SIJ5beyhx5ExVRti3AvKoOJngIj7xz3oylPdWQ=="
+    },
     "node_modules/lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
@@ -1567,6 +1589,21 @@
         "@types/node": "*"
       }
     },
+    "@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
+    "@types/lodash.flattendeep": {
+      "version": "4.4.7",
+      "resolved": "https://registry.npmjs.org/@types/lodash.flattendeep/-/lodash.flattendeep-4.4.7.tgz",
+      "integrity": "sha512-1h6GW/AeZw/Wej6uxrqgmdTDZX1yFS39lRsXYkg+3kWvOWWrlGCI6H7lXxlUHOzxDT4QeYGmgPpQ3BX9XevzOg==",
+      "dev": true,
+      "requires": {
+        "@types/lodash": "*"
+      }
+    },
     "@types/node": {
       "version": "18.11.18",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-18.11.18.tgz",
@@ -2113,6 +2150,11 @@
         "type-check": "~0.3.2"
       }
     },
+    "lodash.flattendeep": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.flattendeep/-/lodash.flattendeep-4.4.0.tgz",
+      "integrity": "sha512-uHaJFihxmJcEX3kT4I23ABqKKalJ/zDrDg0lsFtc1h+3uw49SIJ5beyhx5ExVRti3AvKoOJngIj7xz3oylPdWQ=="
+    },
     "lru-cache": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",

remote_judger/package.json

@@ -15,6 +15,7 @@
     "crlf-normalize": "^1.0.18",
     "fs-extra": "^11.1.0",
     "jsdom": "^21.0.0",
+    "lodash.flattendeep": "^4.4.0",
     "math-sum": "^2.0.0",
     "reggol": "^1.3.4",
     "superagent": "^8.0.6",
@@ -24,6 +25,7 @@
     "@types/fs-extra": "^11.0.1",
     "@types/js-yaml": "^4.0.5",
     "@types/jsdom": "^20.0.1",
+    "@types/lodash.flattendeep": "^4.4.7",
     "@types/node": "^18.11.18",
     "@types/superagent": "^4.1.16",
     "@types/superagent-proxy": "^3.0.0",

remote_judger/src/daemon.ts

@@ -7,6 +7,7 @@ import * as TIME from './utils/time';
 import { apply } from './vjudge';
 import path from 'path';
 import child from 'child_process';
+import htmlspecialchars from './utils/htmlspecialchars';
 
 proxy(superagent);
 
@@ -146,7 +147,8 @@ export default async function daemon(config: UOJConfig) {
             config.remote_problem_id,
             config.answer_language,
             code,
-            judge_time
+            judge_time,
+            config
           );
         } catch (err) {
           await request('/submit', {
@@ -157,7 +159,7 @@ export default async function daemon(config: UOJConfig) {
               status: 'Judged',
               score: 0,
               error: 'Judgment Failed',
-              details: `<error>No details.</error>`,
+              details: `<error>${htmlspecialchars(err.message)}</error>`,
             }),
             judge_time,
           });

remote_judger/src/interface.ts

@@ -1,8 +1,8 @@
 export interface RemoteAccount {
   type: string;
   cookie?: string[];
-  handle: string;
-  password: string;
+  handle?: string;
+  password?: string;
   endpoint?: string;
   proxy?: string;
 }

remote_judger/src/providers/atcoder.ts

@@ -73,6 +73,10 @@ export default class AtcoderProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://atcoder.jp';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = ['language=en'];
   csrf: string;
 

remote_judger/src/providers/codeforces.ts

@@ -87,6 +87,10 @@ export default class CodeforcesProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://codeforces.com';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = [];
   csrf: string;
 

remote_judger/src/providers/loj.ts

@@ -156,6 +156,10 @@ export default class LibreojProvider implements IBasicProvider {
     this.account.endpoint ||= 'https://api.loj.ac.cn/api';
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   get(url: string) {
     logger.debug('get', url);
     if (!url.includes('//')) url = `${this.account.endpoint}${url}`;

remote_judger/src/providers/luogu.ts

@@ -0,0 +1,350 @@
+import { JSDOM } from 'jsdom';
+import superagent from 'superagent';
+import proxy from 'superagent-proxy';
+import Logger from '../utils/logger';
+import { IBasicProvider, RemoteAccount, USER_AGENT } from '../interface';
+import sleep from '../utils/sleep';
+import flattenDeep from 'lodash.flattendeep';
+import htmlspecialchars from '../utils/htmlspecialchars';
+
+proxy(superagent);
+const logger = new Logger('remote/luogu');
+
+const STATUS_MAP = [
+  'Waiting', // WAITING,
+  'Judging', // JUDGING,
+  'Compile Error', // CE
+  'Output Limit Exceeded', // OLE
+  'Memory Limit Exceeded', // MLE
+  'Time Limit Exceeded', // TLE
+  'Wrong Answer', // WA
+  'Runtime Error', // RE
+  0,
+  0,
+  0,
+  'Judgment Failed', // UKE
+  'Accepted', // AC
+  0,
+  'Wrong Answer', // WA
+];
+
+const LANGS_MAP = {
+  C: {
+    id: 2,
+    name: 'C',
+    comment: '//',
+  },
+  'C++98': {
+    id: 3,
+    name: 'C++98',
+    comment: '//',
+  },
+  'C++11': {
+    id: 4,
+    name: 'C++11',
+    comment: '//',
+  },
+  'C++': {
+    id: 11,
+    name: 'C++14',
+    comment: '//',
+  },
+  'C++17': {
+    id: 12,
+    name: 'C++17',
+    comment: '//',
+  },
+  'C++20': {
+    id: 27,
+    name: 'C++20',
+    comment: '//',
+  },
+  Python3: {
+    id: 7,
+    name: 'Python 3',
+    comment: '#',
+  },
+  Java8: {
+    id: 8,
+    name: 'Java 8',
+    comment: '//',
+  },
+  Pascal: {
+    id: 1,
+    name: 'Pascal',
+    comment: '//',
+  },
+};
+
+function buildLuoguTestCaseInfoBlock(test) {
+  let res = '';
+
+  res += `<test num="${test.id + 1}" info="${STATUS_MAP[test.status]}" time="${
+    test.time || -1
+  }" memory="${test.memory || -1}" score="${test.score || ''}">`;
+  res += `<res>${htmlspecialchars(test.description || '')}</res>`;
+  res += '</test>';
+
+  return res;
+}
+
+export default class LuoguProvider implements IBasicProvider {
+  constructor(public account: RemoteAccount) {
+    if (account.cookie) this.cookie = account.cookie;
+  }
+
+  static constructFromAccountData(data) {
+    return new this({
+      type: 'luogu',
+      cookie: Object.entries(data).map(([key, value]) => `${key}=${value}`),
+    });
+  }
+
+  cookie: string[] = [];
+  csrf: string;
+
+  get(url: string) {
+    logger.debug('get', url, this.cookie);
+
+    if (!url.includes('//'))
+      url = `${this.account.endpoint || 'https://www.luogu.com.cn'}${url}`;
+
+    const req = superagent
+      .get(url)
+      .set('Cookie', this.cookie)
+      .set('User-Agent', USER_AGENT);
+
+    if (this.account.proxy) return req.proxy(this.account.proxy);
+
+    return req;
+  }
+
+  async safeGet(url: string) {
+    const res = await this.get(url);
+
+    if (res.text.startsWith('<html><script>document.location.reload()')) {
+      const sec = this.getCookie.call(
+        { cookie: res.header['set-cookie'] },
+        'sec'
+      );
+      this.setCookie('sec', sec);
+      logger.debug('sec', sec);
+
+      return await this.get(url);
+    }
+
+    return res;
+  }
+
+  post(url: string) {
+    logger.debug('post', url, this.cookie);
+
+    if (!url.includes('//'))
+      url = `${this.account.endpoint || 'https://www.luogu.com.cn'}${url}`;
+
+    const req = superagent
+      .post(url)
+      .set('Cookie', this.cookie)
+      .set('x-csrf-token', this.csrf)
+      .set('User-Agent', USER_AGENT)
+      .set('x-requested-with', 'XMLHttpRequest')
+      .set('origin', 'https://www.luogu.com.cn');
+
+    if (this.account.proxy) return req.proxy(this.account.proxy);
+
+    return req;
+  }
+
+  getCookie(target: string) {
+    return this.cookie
+      .find(i => i.startsWith(`${target}=`))
+      ?.split('=')[1]
+      ?.split(';')[0];
+  }
+
+  setCookie(target: string, value: string) {
+    this.cookie = this.cookie.filter(i => !i.startsWith(`${target}=`));
+    this.cookie.push(`${target}=${value}`);
+  }
+
+  async getCsrfToken(url: string) {
+    let { text: html } = await this.safeGet(url);
+
+    const $dom = new JSDOM(html);
+
+    this.csrf = $dom.window.document
+      .querySelector('meta[name="csrf-token"]')
+      .getAttribute('content');
+
+    logger.info('csrf-token=', this.csrf);
+  }
+
+  get loggedIn() {
+    return this.safeGet('/user/setting?_contentOnly=1').then(
+      ({ body }) => body.currentTemplate !== 'AuthLogin'
+    );
+  }
+
+  async ensureLogin() {
+    if (await this.loggedIn) {
+      await this.getCsrfToken('/user/setting');
+
+      return true;
+    }
+
+    logger.info('retry login');
+
+    // TODO login;
+
+    return false;
+  }
+
+  async submitProblem(
+    id: string,
+    lang: string,
+    code: string,
+    submissionId: number,
+    next,
+    end
+  ) {
+    if (!(await this.ensureLogin())) {
+      end({
+        error: true,
+        status: 'Judgment Failed',
+        message: 'Login failed',
+      });
+
+      return null;
+    }
+
+    if (code.length < 10) {
+      end({
+        error: true,
+        status: 'Compile Error',
+        message: 'Code too short',
+      });
+
+      return null;
+    }
+
+    const programType = LANGS_MAP[lang] || LANGS_MAP['C++'];
+    const comment = programType.comment;
+
+    if (comment) {
+      const msg = `S2OJ Submission #${submissionId} @ ${new Date().getTime()}`;
+      if (typeof comment === 'string') code = `${comment} ${msg}\n${code}`;
+      else if (comment instanceof Array)
+        code = `${comment[0]} ${msg} ${comment[1]}\n${code}`;
+    }
+
+    const result = await this.post(`/fe/api/problem/submit/${id}`)
+      .set('referer', `https://www.luogu.com.cn/problem/${id}`)
+      .send({
+        code,
+        lang: programType.id,
+        enableO2: 1,
+      });
+
+    logger.info('RecordID:', result.body.rid);
+
+    return result.body.rid;
+  }
+
+  async waitForSubmission(problem_id: string, id: string, next, end) {
+    let fail = 0;
+    let count = 0;
+
+    while (count < 120 && fail < 5) {
+      await sleep(1500);
+      count++;
+
+      try {
+        const { body } = await this.safeGet(`/record/${id}?_contentOnly=1`);
+        const data = body.currentData.record;
+
+        if (
+          data.detail.compileResult &&
+          data.detail.compileResult.success === false
+        ) {
+          return await end({
+            error: true,
+            id: `R${id}`,
+            status: 'Compile Error',
+            message: data.detail.compileResult.message,
+          });
+        }
+
+        logger.info('Fetched with length', JSON.stringify(body).length);
+        const total = flattenDeep(
+          Object.entries(body.currentData.testCaseGroup || {}).map(o => o[1])
+        ).length;
+
+        if (!data.detail.judgeResult?.subtasks) continue;
+
+        await next({
+          status: `Judging (${
+            data.detail.judgeResult?.finishedCaseCount || '?'
+          }/${total})`,
+        });
+
+        if (data.status < 2) continue;
+
+        logger.info('RecordID:', id, 'done');
+
+        const status = STATUS_MAP[data.status];
+        let details = '';
+
+        details += `<info-block>REMOTE_SUBMISSION_ID = ${id}\nVERDICT = ${status}</info-block>`;
+
+        if (data.detail.judgeResult.subtasks.length === 1) {
+          details += Object.entries(
+            data.detail.judgeResult.subtasks[0].testCases
+          )
+            .map(o => o[1])
+            .map(buildLuoguTestCaseInfoBlock)
+            .join('\n');
+        } else {
+          details += Object.entries(data.detail.judgeResult.subtasks)
+            .map(o => o[1])
+            .map(
+              (subtask: any, index) =>
+                `<subtask num="${index}" info="${
+                  STATUS_MAP[subtask.status]
+                }" time="${subtask.time || -1}" memory="${
+                  subtask.memory || -1
+                }" score="${subtask.score || ''}">${Object.entries(
+                  subtask.testCases
+                )
+                  .map(o => o[1])
+                  .map(buildLuoguTestCaseInfoBlock)
+                  .join('\n')}</subtask>`
+            )
+            .join('\n');
+        }
+
+        return await end({
+          id: `R${id}`,
+          status,
+          score:
+            status === 'Accepted'
+              ? 100
+              : (data.score / data.problem.fullScore) * 100,
+          time: data.time,
+          memory: data.memory,
+          details: `<div>${details}</div>`,
+        });
+      } catch (e) {
+        logger.error(e);
+
+        fail++;
+      }
+    }
+
+    return await end({
+      error: true,
+      id: `R${id}`,
+      status: 'Judgment Failed',
+      message: 'Failed to fetch submission details.',
+    });
+  }
+}

remote_judger/src/providers/uoj.ts

@@ -99,6 +99,10 @@ export default class UOJProvider implements IBasicProvider {
     if (account.cookie) this.cookie = account.cookie;
   }
 
+  static constructFromAccountData(data) {
+    throw new Error('Method not implemented.');
+  }
+
   cookie: string[] = [];
   csrf: string;
 

remote_judger/src/vjudge.ts

@@ -8,11 +8,7 @@ const logger = new Logger('vjudge');
 class AccountService {
   api: IBasicProvider;
 
-  constructor(
-    public Provider: BasicProvider,
-    public account: RemoteAccount,
-    private request: any
-  ) {
+  constructor(public Provider: BasicProvider, public account: RemoteAccount) {
     this.api = new Provider(account);
     this.main().catch(e =>
       logger.error(`Error occured in ${account.type}/${account.handle}`, e)
@@ -24,7 +20,81 @@ class AccountService {
     problem_id: string,
     language: string,
     code: string,
-    judge_time: string
+    next,
+    end
+  ) {
+    try {
+      const rid = await this.api.submitProblem(
+        problem_id,
+        language,
+        code,
+        id,
+        next,
+        end
+      );
+
+      if (!rid) return;
+
+      await this.api.waitForSubmission(problem_id, rid, next, end);
+    } catch (e) {
+      logger.error(e);
+
+      await end({ error: true, status: 'Judgment Failed', message: e.message });
+    }
+  }
+
+  async login() {
+    const login = await this.api.ensureLogin();
+    if (login === true) {
+      logger.info(`${this.account.type}/${this.account.handle}: logged in`);
+      return true;
+    }
+    logger.warn(
+      `${this.account.type}/${this.account.handle}: login fail`,
+      login || ''
+    );
+    return false;
+  }
+
+  async main() {
+    const res = await this.login();
+    if (!res) return;
+    setInterval(() => this.login(), Time.hour);
+  }
+}
+
+class VJudge {
+  private p_imports: Record<string, any> = {};
+  private providers: Record<string, AccountService> = {};
+
+  constructor(private request: any) {}
+
+  async importProvider(type: string) {
+    if (this.p_imports[type]) throw new Error(`duplicate provider ${type}`);
+    const provider = await import(`./providers/${type}`);
+
+    this.p_imports[type] = provider.default;
+  }
+
+  async addProvider(type: string) {
+    if (this.p_imports[type]) throw new Error(`duplicate provider ${type}`);
+    const provider = await import(`./providers/${type}`);
+    const account = provider.getAccountInfoFromEnv();
+
+    if (!account) throw new Error(`no account info for ${type}`);
+
+    this.p_imports[type] = provider.default;
+    this.providers[type] = new AccountService(provider.default, account);
+  }
+
+  async judge(
+    id: number,
+    type: string,
+    problem_id: string,
+    language: string,
+    code: string,
+    judge_time: string,
+    config
   ) {
     const next = async payload => {
       return await this.request('/submit', {
@@ -69,84 +139,61 @@ class AccountService {
           details:
             payload.details ||
             '<div>' +
-              `<info-block>ID = ${payload.id || 'None'}</info-block>` +
-              `<info-block>VERDICT = ${payload.status}</info-block>` +
+              `<info-block>REMOTE_SUBMISSION_ID = ${
+                payload.id || 'None'
+              }\nVERDICT = ${payload.status}</info-block>` +
               '</div>',
         }),
         judge_time,
       });
     };
 
-    try {
-      const rid = await this.api.submitProblem(
+    if (!config.remote_submit_type || config.remote_submit_type == 'bot') {
+      if (!this.providers[type]) throw new Error(`No provider ${type}`);
+
+      await this.providers[type].judge(
+        id,
         problem_id,
         language,
         code,
-        id,
         next,
         end
       );
+    } else if (config.remote_submit_type == 'my') {
+      if (!this.p_imports[type]) throw new Error(`No provider ${type}`);
 
-      if (!rid) return;
+      try {
+        const provider = this.p_imports[type].constructFromAccountData(
+          JSON.parse(config.remote_account_data)
+        );
 
-      await this.api.waitForSubmission(problem_id, rid, next, end);
-    } catch (e) {
-      logger.error(e);
-      await end({ error: true, status: 'Judgment Failed', message: e.message });
+        const rid = await provider.submitProblem(
+          problem_id,
+          language,
+          code,
+          id,
+          next,
+          end
+        );
+
+        if (!rid) return;
+
+        await provider.waitForSubmission(problem_id, rid, next, end);
+      } catch (e) {
+        logger.error(e);
+
+        await end({
+          error: true,
+          status: 'Judgment Failed',
+          message: e.message,
+        });
+      }
+    } else {
+      throw new Error(
+        'Unsupported remote submit type: ' + config.remote_submit_type
+      );
     }
   }
-
-  async login() {
-    const login = await this.api.ensureLogin();
-    if (login === true) {
-      logger.info(`${this.account.type}/${this.account.handle}: logged in`);
-      return true;
-    }
-    logger.warn(
-      `${this.account.type}/${this.account.handle}: login fail`,
-      login || ''
-    );
-    return false;
-  }
-
-  async main() {
-    const res = await this.login();
-    if (!res) return;
-    setInterval(() => this.login(), Time.hour);
-  }
-}
-
-class VJudge {
-  private providers: Record<string, AccountService> = {};
-
-  constructor(private request: any) {}
-
-  async addProvider(type: string) {
-    if (this.providers[type]) throw new Error(`duplicate provider ${type}`);
-    const provider = await import(`./providers/${type}`);
-    const account = provider.getAccountInfoFromEnv();
-
-    if (!account) throw new Error(`no account info for ${type}`);
-
-    this.providers[type] = new AccountService(
-      provider.default,
-      account,
-      this.request
-    );
-  }
-
-  async judge(
-    id: number,
-    type: string,
-    problem_id: string,
-    language: string,
-    code: string,
-    judge_time: string
-  ) {
-    if (!this.providers[type]) throw new Error(`no provider ${type}`);
-
-    await this.providers[type].judge(id, problem_id, language, code, judge_time);
-  }
 }
 
 export async function apply(request: any) {
@@ -156,6 +203,7 @@ export async function apply(request: any) {
   await vjudge.addProvider('atcoder');
   await vjudge.addProvider('uoj');
   await vjudge.addProvider('loj');
+  await vjudge.importProvider('luogu');
 
   return vjudge;
 }

web/app/controllers/new_remote_problem.php

@@ -51,6 +51,16 @@ $new_remote_problem_form->addInput('remote_problem_id', [
 
 			$vdata['remote_problem_id'] = $id;
 
+			return '';
+		} else if ($remote_oj === 'luogu') {
+			$id = trim(strtoupper($id));
+
+			if (!validateLuoguProblemId($id)) {
+				return '不合法的题目 ID';
+			}
+
+			$vdata['remote_problem_id'] = $id;
+
 			return '';
 		}
 
@@ -73,14 +83,7 @@ $new_remote_problem_form->handle = function (&$vdata) {
 		UOJResponse::page500('题目抓取失败，可能是题目不存在或者没有题面！如果题目没有问题，请稍后再试。<a href="">返回</a>');
 	}
 
-	$submission_requirement = [
-		[
-			"name" => "answer",
-			"type" => "source code",
-			"file_name" => "answer.code",
-			"languages" => $remote_provider['languages'],
-		]
-	];
+	$submission_requirement = UOJRemoteProblem::getSubmissionRequirements($remote_online_judge);
 	$enc_submission_requirement = json_encode($submission_requirement);
 
 	$extra_config = [

web/app/controllers/problem.php

@@ -104,6 +104,19 @@ $custom_test_enabled = $custom_test_requirement && $pre_submit_check_ret === tru
 
 function handleUpload($zip_file_name, $content, $tot_size) {
 	global $is_participating;
+
+	$remote_oj = UOJProblem::cur()->getExtraConfig('remote_online_judge');
+	$remote_provider = UOJRemoteProblem::$providers[$remote_oj];
+
+	if (UOJProblem::info('type') == 'remote') {
+		$submit_type = in_array($_POST['answer_remote_submit_type'], $remote_provider['submit_type']) ? $_POST['answer_remote_submit_type'] : $remote_provider['submit_type'][0];
+		if ($submit_type != 'bot') {
+			$content['no_rejudge'] = true;
+		}
+		$content['config'][] = ['remote_submit_type', $submit_type];
+		$content['config'][] = ['remote_account_data', $_POST['answer_remote_account_data']];
+	}
+
 	UOJSubmission::onUpload($zip_file_name, $content, $tot_size, $is_participating);
 }
 function handleCustomTestUpload($zip_file_name, $content, $tot_size) {
@@ -182,7 +195,7 @@ if ($pre_submit_check_ret === true && !$no_more_submission) {
 
 	if (UOJProblem::cur()->userCanUploadSubmissionViaZip(Auth::user())) {
 		$zip_answer_form = newZipSubmissionForm(
-			'zip-answer',
+			'zip_answer',
 			$submission_requirement,
 			'FS::randomAvailableSubmissionFileName',
 			'handleUpload'
@@ -198,6 +211,24 @@ if ($pre_submit_check_ret === true && !$no_more_submission) {
 		'FS::randomAvailableSubmissionFileName',
 		'handleUpload'
 	);
+
+	if (UOJProblem::info('type') == 'remote') {
+		$remote_oj = UOJProblem::cur()->getExtraConfig('remote_online_judge');
+		$remote_pid = UOJProblem::cur()->getExtraConfig('remote_problem_id');
+		$remote_url = UOJRemoteProblem::getProblemRemoteUrl($remote_oj, $remote_pid);
+		$submit_type = json_encode(UOJRemoteProblem::$providers[$remote_oj]['submit_type']);
+
+		$answer_form->addNoVal('answer_remote_submit_type', '');
+		$answer_form->addNoVal('answer_remote_account_data', '');
+		$answer_form->appendHTML(<<<EOD
+			<h5>Remote Judge 配置</h5>
+			<div class="" id="answer-remote_submit_group"></div>
+			<script>
+				$('#answer-remote_submit_group').remote_submit_type_group("{$remote_oj}", "{$remote_pid}", "{$remote_url}", {$submit_type});
+			</script>
+		EOD);
+	}
+
 	$answer_form->extra_validator = $submission_extra_validator;
 	$answer_form->succ_href = $is_participating ? '/contest/' . UOJContest::info('id') . '/submissions' : '/submissions';
 	$answer_form->runAtServer();

web/app/controllers/problem_statement_manage.php

@@ -118,7 +118,7 @@ if (UOJProblem::info('type') == 'remote') {
 		</ul>
 	EOD);
 	$re_crawl_form->config['submit_button']['text'] = '重新爬取';
-	$re_crawl_form->handle = function () use ($remote_online_judge, $remote_problem_id, $remote_provider) {
+	$re_crawl_form->handle = function () use ($remote_online_judge, $remote_problem_id) {
 		try {
 			$data = UOJRemoteProblem::getProblemBasicInfo($remote_online_judge, $remote_problem_id);
 		} catch (Exception $e) {
@@ -134,16 +134,9 @@ if (UOJProblem::info('type') == 'remote') {
 			$data['difficulty'] = UOJProblem::info('difficulty');
 		}
 
-		$submission_requirement = [
-			[
-				"name" => "answer",
-				"type" => "source code",
-				"file_name" => "answer.code",
-				"languages" => $remote_provider['languages'],
-			]
-		];
+		$submission_requirement = UOJRemoteProblem::getSubmissionRequirements($remote_online_judge);
 		$enc_submission_requirement = json_encode($submission_requirement);
-
+	
 		$extra_config = [
 			'remote_online_judge' => $remote_online_judge,
 			'remote_problem_id' => $remote_problem_id,

web/app/libs/uoj-form-lib.php

@@ -46,6 +46,7 @@ function newAddDelCmdForm($form_name, $validate, $handle, $final = null) {
 
 function newSubmissionForm($form_name, $requirement, $zip_file_name_gen, $handle) {
 	$form = new UOJForm($form_name);
+
 	foreach ($requirement as $req) {
 		if ($req['type'] == "source code") {
 			$languages = UOJLang::getAvailableLanguages(isset($req['languages']) ? $req['languages'] : null);
@@ -74,6 +75,7 @@ function newSubmissionForm($form_name, $requirement, $zip_file_name_gen, $handle
 		$content = [];
 		$content['file_name'] = $zip_file_name;
 		$content['config'] = [];
+
 		foreach ($requirement as $req) {
 			if ($req['type'] == "source code") {
 				$content['config'][] = ["{$req['name']}_language", $_POST["{$form_name}_{$req['name']}_language"]];

web/app/libs/uoj-html-lib.php

@@ -403,7 +403,7 @@ function echoSubmissionContent($submission, $requirement) {
 			echo '</div>';
 			echo '<div class="card-footer">' . $footer_text . '</div>';
 			echo '</div>';
-		} elseif ($req['type'] == "text") {
+		} else if ($req['type'] == "text") {
 			$file_content = $zip_file->getFromName("{$req['file_name']}", 504);
 			$file_content = strOmit($file_content, 500);
 			$file_content = uojTextEncode($file_content, array('allow_CR' => true, 'html_escape' => true));

web/app/libs/uoj-validate-lib.php

@@ -79,3 +79,7 @@ function is_short_string($str) {
 function validateCodeforcesProblemId($str) {
 	return preg_match('/(|GYM)[1-9][0-9]{0,5}[A-Z][1-9]?/', $str) !== true;
 }
+
+function validateLuoguProblemId($str) {
+	return preg_match('/P[1-9][0-9]{4,5}/', $str) !== true;
+}

web/app/models/UOJForm.php

@@ -665,6 +665,7 @@ class UOJForm {
 			EOD;
 		} else {
 			echo <<<EOD
+				$("#button-submit-{$this->form_name}").addClass('disabled');
 				return ok;
 			EOD;
 		}

web/app/models/UOJRemoteProblem.php

@@ -14,6 +14,7 @@ class UOJRemoteProblem {
 				'ограничение по времени на тест',
 			],
 			'languages' => ['C', 'C++', 'C++17', 'C++20', 'Java17', 'Pascal', 'Python2', 'Python3'],
+			'submit_type' => ['bot'],
 		],
 		'atcoder' => [
 			'name' => 'AtCoder',
@@ -24,6 +25,7 @@ class UOJRemoteProblem {
 				'指定されたタスクが見つかりません',
 			],
 			'languages' => ['C', 'C++', 'Java11', 'Python3', 'Pascal'],
+			'submit_type' => ['bot'],
 		],
 		'uoj' => [
 			'name' => 'UniversalOJ',
@@ -33,12 +35,21 @@ class UOJRemoteProblem {
 				'未找到该页面',
 			],
 			'languages' => ['C', 'C++03', 'C++11', 'C++', 'C++17', 'C++20', 'Python3', 'Python2.7', 'Java8', 'Java11', 'Java17', 'Pascal'],
+			'submit_type' => ['bot'],
 		],
 		'loj' => [
 			'name' => 'LibreOJ',
 			'short_name' => 'LOJ',
 			'url' => 'https://loj.ac',
 			'languages' => ['C', 'C++03', 'C++11', 'C++', 'C++17', 'C++20', 'Python3', 'Python2.7', 'Java17', 'Pascal'],
+			'submit_type' => ['bot'],
+		],
+		'luogu' => [
+			'name' => '洛谷',
+			'short_name' => '洛谷',
+			'url' => 'https://www.luogu.com.cn',
+			'languages' => ['C', 'C++98', 'C++11', 'C++', 'C++17', 'C++20', 'Python3', 'Java8', 'Pascal'],
+			'submit_type' => ['my'],
 		],
 	];
 
@@ -90,6 +101,10 @@ class UOJRemoteProblem {
 		return static::$providers['loj']['url'] . '/p/' . $id;
 	}
 
+	static function getLuoguProblemUrl($id) {
+		return static::$providers['luogu']['url'] . '/problem/' . $id;
+	}
+
 	static function getCodeforcesProblemBasicInfoFromHtml($id, $html) {
 		$remote_provider = static::$providers['codeforces'];
 
@@ -394,6 +409,72 @@ class UOJRemoteProblem {
 		];
 	}
 
+	static function getLuoguProblemBasicInfo($id) {
+		$remote_provider = static::$providers['luogu'];
+		$res = static::curl_get(static::getLuoguProblemUrl($id) . '?_contentOnly=1');
+
+		if (!$res) return null;
+
+		// Convert stdClass to array
+		$res = json_decode(json_encode($res['response']), true);
+
+		if (!isset($res['code']) || $res['code'] != 200) return null;
+
+		$problem = $res['currentData']['problem'];
+		$statement = '';
+
+		if ($problem['background']) {
+			$statement .= "\n### 题目背景\n\n";
+			$statement .= $problem['background'] . "\n";
+		}
+
+		$statement .= "\n### 题目描述\n\n";
+		$statement .= $problem['description'] . "\n";
+
+		$statement .= "\n### 输入格式\n\n";
+		$statement .= $problem['inputFormat'] . "\n";
+
+		$statement .= "\n### 输出格式\n\n";
+		$statement .= $problem['outputFormat'] . "\n";
+
+		$statement .= "\n### 输入输出样例\n\n";
+
+		foreach ($problem['samples'] as $id => $sample) {
+			$display_sample_id = $id + 1;
+
+			$statement .= "\n#### 样例输入 #{$display_sample_id}\n\n";
+			$statement .= "\n```text\n{$sample[0]}\n```\n\n";
+
+			$statement .= "\n#### 样例输出 #{$display_sample_id}\n\n";
+			$statement .= "\n```text\n{$sample[1]}\n```\n\n";
+		}
+
+		$statement .= "\n### 说明/提示\n\n";
+		$statement .= $problem['hint'] . "\n";
+
+		return [
+			'type' => 'html',
+			'title' => "【{$remote_provider['short_name']}{$problem['pid']}】{$problem['title']}",
+			'time_limit' => (float)max($problem['limits']['time']) / 1000.0,
+			'memory_limit' => (float)max($problem['limits']['memory']) / 1024.0,
+			'difficulty' => -1,
+			'statement' => HTML::parsedown()->text($statement),
+		];
+	}
+
+	public static function getSubmissionRequirements($oj) {
+		$remote_provider = UOJRemoteProblem::$providers[$oj];
+
+		return [
+			[
+				"name" => "answer",
+				"type" => "source code",
+				"file_name" => "answer.code",
+				"languages" => $remote_provider['languages'],
+			]
+		];
+	}
+
 	public static function getProblemRemoteUrl($oj, $id) {
 		if ($oj === 'codeforces') {
 			return static::getCodeforcesProblemUrl($id);
@@ -403,6 +484,8 @@ class UOJRemoteProblem {
 			return static::getUojProblemUrl($id);
 		} else if ($oj === 'loj') {
 			return static::getLojProblemUrl($id);
+		} else if ($oj === 'luogu') {
+			return static::getLuoguProblemUrl($id);
 		}
 
 		return null;
@@ -418,6 +501,8 @@ class UOJRemoteProblem {
 			return static::getUojProblemBasicInfo($id);
 		} else if ($oj === 'loj') {
 			return static::getLojProblemBasicInfo($id);
+		} else if ($oj === 'luogu') {
+			return static::getLuoguProblemBasicInfo($id);
 		}
 
 		return null;

web/app/models/UOJSubmission.php

@@ -418,6 +418,10 @@ class UOJSubmission {
 	}
 
 	public function userCanRejudge(array $user = null) {
+		if ($this->getContent('no_rejudge')) {
+			return false;
+		}
+
 		if (isSuperUser($user)) {
 			return true;
 		}

web/js/uoj.js

@@ -947,6 +947,110 @@ $.fn.text_file_form_group = function(name, text) {
 	});
 }
 
+// remote judge submit type group
+$.fn.remote_submit_type_group = function(oj, pid, url, submit_type) {
+	return this.each(function() {
+		var input_submit_type_bot_id = 'input-submit_type_bot';
+		var input_submit_type_my_id = 'input-submit_type_my';
+		var div_submit_type_bot_id = 'div-submit_type_bot';
+		var div_submit_type_my_id = 'div-submit_type_my';
+
+		var input_submit_type_bot = $('<input class="form-check-input" type="radio" name="answer_remote_submit_type" id="' + input_submit_type_bot_id + '" value="bot" />');
+		var input_submit_type_my = $('<input class="form-check-input" type="radio" name="answer_remote_submit_type" id="' + input_submit_type_my_id + '" value="my" />');
+		var input_my_account_data = $('<input type="hidden" name="answer_remote_account_data" value="" />');
+
+		var div_submit_type_bot = $('<div id="' + div_submit_type_bot_id + '" />')
+			.append('<div class="mt-3">将使用公用账号提交本题。</div>');
+		var div_submit_type_my = $('<div id="' + div_submit_type_my_id + '" />')
+			.append('<div class="mt-3">将使用您的账号提交本题。</div>');
+
+		input_submit_type_bot.click(function() {
+			div_submit_type_my.hide('fast');
+			div_submit_type_bot.show('fast');
+		});
+		input_submit_type_my.click(function() {
+			div_submit_type_bot.hide('fast');
+			div_submit_type_my.show('fast');
+		});
+
+		if (submit_type[0] == 'bot') {
+			div_submit_type_my.hide();
+			input_submit_type_bot[0].checked = true;
+		} else if (submit_type[0] == 'my') {
+			div_submit_type_bot.hide();
+			input_submit_type_my[0].checked = true;
+		}
+
+		if (submit_type.indexOf('bot') == -1) {
+			input_submit_type_bot.attr('disabled', 'disabled');
+		}
+		if (submit_type.indexOf('my') == -1) {
+			input_submit_type_my.attr('disabled', 'disabled');
+		}
+
+		if (oj == 'luogu') {
+			var luogu_account_data = {"_uid": "", "__client_id": ""};
+			var input_luogu_uid = $('<input class="form-control" type="text" name="luogu_uid" id="input-luogu_uid" />');
+			var input_luogu_client_id = $('<input class="form-control" type="text" name="luogu_client_id" id="input-luogu_client_id" />');
+
+			if ('localStorage' in window) {
+				try {
+					var luogu_account_data_str = localStorage.getItem('uoj_remote_judge_luogu_account_data');
+					if (luogu_account_data_str) {
+						luogu_account_data = JSON.parse(luogu_account_data_str);
+					}
+				} catch (e) {}
+
+				var save_luogu_account_data = function() {
+					localStorage.setItem('uoj_remote_judge_luogu_account_data', JSON.stringify(luogu_account_data));
+				}
+			} else {
+				var save_luogu_account_data = function() {};
+			}
+
+			input_luogu_uid.change(function() {
+				luogu_account_data._uid = $(this).val();
+				input_my_account_data.val(JSON.stringify(luogu_account_data));
+				save_luogu_account_data();
+			});
+
+			input_luogu_client_id.change(function() {
+				luogu_account_data.__client_id = $(this).val();
+				input_my_account_data.val(JSON.stringify(luogu_account_data));
+				save_luogu_account_data();
+			});
+
+			input_my_account_data.val(JSON.stringify(luogu_account_data));
+			input_luogu_uid.val(luogu_account_data._uid);
+			input_luogu_client_id.val(luogu_account_data.__client_id);
+
+			div_submit_type_my.append(
+				$('<div class="row mt-3" />')
+					.append($('<div class="col-sm-2" />').append('<label for="input-luogu_uid" class="form-col-label">_uid</label>'))
+					.append($('<div class="col-sm-4" />').append(input_luogu_uid))
+					.append($('<div class="col-sm-6" />').append($('<div class="form-text" />').append('请填入 Cookie 中的 <code>_uid</code>。')))
+			).append(
+				$('<div class="row mt-3" />')
+					.append($('<div class="col-sm-2" />').append('<label for="input-luogu_client_id" class="form-col-label">__client_id</label>'))
+					.append($('<div class="col-sm-4" />').append(input_luogu_client_id))
+					.append($('<div class="col-sm-6" />').append($('<div class="form-text" />').append('请填入 Cookie 中的 <code>__client_id</code>。')))
+			).append(input_my_account_data);
+		}
+
+		$(this).append(
+			$('<div class="mt-3" />').append(
+					$('<div class="form-check d-inline-block" />')
+						.append(input_submit_type_bot)
+						.append($('<label class="form-check-label" for="' + input_submit_type_bot_id + '" />').append(' 公用账号'))
+				).append(
+					$('<div class="form-check d-inline-block ms-3" />')
+						.append(input_submit_type_my)
+						.append($('<label class="form-check-label" for="' + input_submit_type_my_id + '" />').append(' 自有账号'))
+				)
+		).append(div_submit_type_bot).append(div_submit_type_my);
+	});
+}
+
 // custom test
 function custom_test_onsubmit(response_text, div_result, url) {
 	if (response_text != '') {