vjudge: add hduoj

packages/vjudge/package.json

@@ -10,6 +10,7 @@
     "dependencies": {
         "@hydrooj/utils": "workspace:*",
         "jsdom": "^22.1.0",
+        "superagent-charset": "^1.2.0",
         "superagent-proxy": "^3.0.0"
     },
     "devDependencies": {

packages/vjudge/src/providers/hduoj.ts

@@ -0,0 +1,222 @@
+/* eslint-disable no-constant-condition */
+/* eslint-disable no-await-in-loop */
+import { PassThrough } from 'stream';
+import { JSDOM } from 'jsdom';
+import { } from 'superagent';
+import charset from 'superagent-charset';
+import proxy from 'superagent-proxy';
+import {
+    htmlEncode, Logger, parseMemoryMB, parseTimeMS, sleep, STATUS, superagent,
+} from 'hydrooj';
+import { BasicFetcher } from '../fetch';
+import { IBasicProvider, RemoteAccount } from '../interface';
+
+declare module 'superagent' {
+    interface Request {
+        charset(c: string): this;
+    }
+}
+
+charset(superagent);
+proxy(superagent as any);
+const logger = new Logger('remote/hduoj');
+
+const StatusMapping = {
+    Queuing: STATUS.STATUS_WAITING,
+    Running: STATUS.STATUS_JUDGING,
+    Compiling: STATUS.STATUS_COMPILING,
+    Accepted: STATUS.STATUS_ACCEPTED,
+    'Presentation Error': STATUS.STATUS_WRONG_ANSWER,
+    'Runtime Error': STATUS.STATUS_RUNTIME_ERROR,
+    'Output Limit Exceeded': STATUS.STATUS_OUTPUT_LIMIT_EXCEEDED,
+    'Wrong Answer': STATUS.STATUS_WRONG_ANSWER,
+    'Compilation Error': STATUS.STATUS_COMPILE_ERROR,
+    'Memory Limit Exceeded': STATUS.STATUS_MEMORY_LIMIT_EXCEEDED,
+    'Time Limit Exceeded': STATUS.STATUS_TIME_LIMIT_EXCEEDED,
+};
+
+export default class HDUOJProvider extends BasicFetcher implements IBasicProvider {
+    constructor(public account: RemoteAccount, private save: (data: any) => Promise<void>) {
+        super(account, 'https://acm.hdu.edu.cn', 'form', logger);
+    }
+
+    async getCsrfToken(url: string) {
+        const { header } = await this.get(url);
+        if (header['set-cookie']) {
+            await this.save({ cookie: header['set-cookie'] });
+            this.cookie = header['set-cookie'];
+        }
+        return '';
+    }
+
+    get loggedIn() {
+        return this.get('/index.php').then(({ text: html }) => html.includes('<div align=left style="font-size:16px;width:150px">'));
+    }
+
+    async ensureLogin() {
+        if (await this.loggedIn) return true;
+        logger.info('retry login');
+        await this.getCsrfToken('/');
+        await this.post('/userloginex.php?action=login&cid=0&notice=0')
+            .set('referer', 'https://acm.hdu.edu.cn/userloginex.php')
+            .send({
+                username: this.account.handle,
+                userpass: this.account.password,
+                login: 'Sign In',
+            });
+        return this.loggedIn;
+    }
+
+    async getProblem(id: string) {
+        logger.info(id);
+        const res = await superagent.get('/showproblem.php')
+            .query({ pid: id.split('P')[1] })
+            .buffer(true)
+            .charset('gbk');
+        const { window: { document } } = new JSDOM(res.text);
+        const images = {};
+        const files = {};
+        const problemContent = document.querySelector('table>tbody').children[3].children[0];
+        for (const ele of problemContent.querySelectorAll('img[src]')) {
+            const src = ele.getAttribute('src');
+            if (images[src]) {
+                ele.setAttribute('src', `file://${images[src]}.png`);
+                continue;
+            }
+            const file = new PassThrough();
+            this.get(src).pipe(file);
+            const fid = String.random(8);
+            images[src] = fid;
+            files[`${fid}.png`] = file;
+            ele.setAttribute('src', `file://${fid}.png`);
+        }
+        const info = problemContent.children[1].children[0].children[0].innerHTML;
+        const timeMatcher = /Time Limit: \d+\/(\d+) MS/;
+        const time = info.match(timeMatcher)[1];
+        const memoryMatcher = /Memory Limit: \d+\/(\d+) K/;
+        const memory = info.match(memoryMatcher)[1];
+        const title = problemContent.children[0].innerHTML;
+        let tag = '';
+        problemContent.remove();
+        problemContent.remove();
+        let html = '';
+        let preId = 0;
+        let markNext = '';
+        let lastMark = '';
+        for (const node of problemContent.children) {
+            const tagName = node.tagName.toLowerCase();
+            if (tagName === 'font' || tagName === 'h1' || tagName === 'center' || node.innerHTML === '&nbsp;') {
+                continue;
+            }
+            if (node.getAttribute('align') === 'left') {
+                lastMark = node.textContent;
+                if (lastMark === 'Source') {
+                    tag = node.nextElementSibling.textContent.trim();
+                    node.nextElementSibling.innerHTML = tag;
+                    continue;
+                }
+                if (lastMark.startsWith('Sample ')) {
+                    if (lastMark.includes('Input')) {
+                        preId++;
+                        markNext = 'input';
+                    } else {
+                        markNext = 'output';
+                    }
+                    continue;
+                }
+                html += `<h2>${htmlEncode(node.innerHTML)}</h2>`;
+            } else {
+                if (lastMark.length === 0 || lastMark === 'Source' || node.innerHTML.length === 0) {
+                    continue;
+                }
+                if (lastMark === 'Sample Input' || lastMark === 'Sample Output') {
+                    html += `\n<pre><code class="language-${markNext}${preId}">${node.innerHTML}</code></pre>\n`;
+                } else {
+                    html += node.innerHTML;
+                }
+            }
+        }
+        const tagList = (tag.length === 0) ? [] : [tag];
+        return {
+            title,
+            data: {
+                'config.yaml': Buffer.from(`time: ${time}ms\nmemory: ${memory}k\ntype: remote_judge\nsubType: hduoj\ntarget: ${id}`),
+            },
+            files,
+            tag: tagList,
+            content: html,
+        };
+    }
+
+    async listProblem(page: number, resync = false) {
+        if (resync && page > 1) return [];
+        const { text } = await this.get(`/listproblem.php?vol=${page}`);
+        const $dom = new JSDOM(text);
+        const ProblemTable = $dom.window.document.querySelector('.table_text');
+        const ProblemList = ProblemTable.querySelector('script').textContent;
+        const matcher = /p\(\d+,(?<num>\d+),\d+,/g;
+        let match = matcher.exec(ProblemList);
+        const res = [];
+        while (match != null) {
+            res.push(`P${match[1]}`);
+            match = matcher.exec(ProblemList);
+        }
+        return res;
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    async submitProblem(id: string, lang: string, code: string, info) {
+        await this.ensureLogin();
+        const language = lang.includes('hduoj.') ? lang.split('hduoj.')[1] : '0';
+        code = Buffer.from(encodeURIComponent(code)).toString('base64');
+        const { text } = await this.post('/submit.php?action=submit')
+            .set('referer', `http://acm.hdu.edu.cn/submit.php?pid=${id.split('P')[1]}`)
+            .send({
+                check: 0,
+                _usercode: code,
+                problemid: id.split('P')[1],
+                language,
+            });
+        if (text.includes('One or more following ERROR(s) occurred.')) {
+            throw new Error(text.split('<li>')[1].split('</li>')[0]);
+        }
+        // eslint-disable-next-line max-len
+        const { text: status } = await this.get(`/status.php?first=&pid=${id}&user=${this.account.handle}&lang=${parseInt(language, 10) + 1}&status=0`);
+        const $dom = new JSDOM(status);
+        const res = $dom.window.document.querySelector('.table_text>tbody');
+        return res.children[2].children[0].innerHTML;
+    }
+
+    async waitForSubmission(id: string, next, end) {
+        while (true) {
+            await sleep(3000);
+            const { text } = await this.get(`/status.php?first=${id}`);
+            const { window: { document } } = new JSDOM(text);
+            const submission = document.querySelector('#fixed_table>table>tbody').children[2];
+            const status = StatusMapping[submission.children[2].children[0].textContent.trim()]
+                || STATUS.STATUS_SYSTEM_ERROR;
+            if (status === STATUS.STATUS_JUDGING) continue;
+            if (status === STATUS.STATUS_COMPILE_ERROR) {
+                const { text: info } = await superagent.get(`http://acm.hdu.edu.cn/viewerror.php?rid=${id}`)
+                    .buffer(true)
+                    .charset('gbk');
+                const ceInfo = new JSDOM(info);
+                await next({ compilerText: ceInfo.window.document.querySelector('table>tbody>tr>td>pre').innerHTML });
+                return await end({
+                    status,
+                    score: 0,
+                    time: 0,
+                    memory: 0,
+                });
+            }
+            const memory = parseMemoryMB(submission.children[5].innerHTML.trim() || 0) * 1024;
+            const time = parseTimeMS(submission.children[4].innerHTML.trim() || 0);
+            return await end({
+                status,
+                score: status === STATUS.STATUS_ACCEPTED ? 100 : 0,
+                time,
+                memory,
+            });
+        }
+    }
+}

packages/vjudge/src/providers/index.ts

@@ -1,5 +1,6 @@
 import codeforces from './codeforces';
 import csgoj from './csgoj';
+import hduoj from './hduoj';
 import {
     BZOJ as bzoj, HUSTOJ as hustoj, XJOI as xjoi, YBT as ybt,
     YBTBAS as ybtbas,
@@ -21,5 +22,6 @@ const vjudge: Record<string, any> = {
     xjoi,
     ybt,
     ybtbas,
+    hduoj,
 };
 export default vjudge;