` 元素上，所以只要点击任意它的子元素（或它本身）就能触发撤回操作。
+
+
+
+## 彩蛋
+
+本题理论上也能通过分析并模拟网络请求来完成。可以发现前端首先是通过 `/getMessages` 接口获取所有消息以及它们的出现时间，然后撤回操作会使用 `/deleteMessage` 撤回某条消息，最后通过 `/getflag` 接口检验是否正确处理所有消息。所以可以带上自己的 cookie（从浏览器中复制或向完整的带有 token 的题目 URL 发送请求获取），通过发送请求来模拟所有的撤回操作。
+
+使用这种方法需要等待某条信息「出现」后才能发送撤回请求，否则会提示「检测到时空穿越」，撤回失败。(/= _ =)/~┴┴
+
+## 其他
+
+@taoky:
+
+本题前端界面基于 [Redlnn/Fake-QQ-Chat-Window](https://github.com/Redlnn/Fake-QQ-Chat-Window)（MIT License）修改，在此表示感谢。
+
+此外这里是[模拟器会发的消息列表](src/src/backend/app/main.py#L84-L181)。
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/assets/done.png" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/assets/done.png"
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index 0000000..f5724b3
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diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/assets/element.png" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/assets/element.png"
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diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/docker-compose.yml" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/docker-compose.yml"
new file mode 100644
index 0000000..71adad1
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/docker-compose.yml"
@@ -0,0 +1,13 @@
+version: '2.4'
+services:
+ web:
+ build: src
+ ports:
+ - 10021:80
+ restart: always
+ networks:
+ - default
+ cpus: 2
+ mem_limit: 16g
+ memswap_limit: 16g
+ pids_limit: 128
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/Dockerfile" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/Dockerfile"
new file mode 100644
index 0000000..8cfedac
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/Dockerfile"
@@ -0,0 +1,27 @@
+# Builder: build Vue project
+# Why 18.17.1? https://github.com/nodejs/node/issues/49911
+FROM node:18.17.1 AS VueBuilder
+
+RUN npm install -g pnpm
+ADD frontend /frontend
+WORKDIR /frontend
+RUN pnpm install --frozen-lockfile && pnpm run build
+
+# modified from tiangolo/uwsgi-nginx-flask (Apache 2.0)
+FROM ustclug/debian:12
+RUN apt update && apt install --no-install-recommends -y nginx \
+ supervisor python3-pip adduser python3-dev gcc
+RUN pip install pyOpenSSL==23.2.0 gevent==23.9.1 flask==2.2.5 uWSGI==2.0.22 --break-system-packages
+RUN adduser --system --no-create-home --disabled-login --disabled-password --group nginx
+COPY uwsgi.ini /etc/uwsgi/uwsgi.ini
+COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+COPY nginx.conf /etc/nginx/nginx.conf
+COPY stop-supervisor.sh /etc/supervisor/stop-supervisor.sh
+ENV UWSGI_INI /app/uwsgi.ini
+ENV UWSGI_CHEAPER 0
+ENV UWSGI_PROCESSES 1
+COPY --from=VueBuilder /frontend/dist /var/www
+COPY ./backend/app /app
+WORKDIR /app
+
+CMD ["supervisord"]
\ No newline at end of file
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/cert.pem" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/cert.pem"
new file mode 100644
index 0000000..b83666f
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/cert.pem"
@@ -0,0 +1,12 @@
+-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/main.py" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/main.py"
new file mode 100644
index 0000000..1d24471
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/main.py"
@@ -0,0 +1,294 @@
+from dataclasses import dataclass
+from flask import (
+ Flask,
+ request,
+ make_response,
+ render_template,
+ session,
+ redirect,
+ url_for,
+)
+import base64
+import OpenSSL
+import hashlib
+import datetime
+import random
+import re
+
+from secret import secret_key
+
+app = Flask(__name__)
+app.secret_key = secret_key
+
+app.config["MAX_CONTENT_LENGTH"] = 10 * 1024 * 1024
+
+with open("./cert.pem") as f:
+ cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, f.read())
+
+
+@app.before_request
+def check():
+ if request.path.startswith("/static/"):
+ return
+ if request.args.get("token"):
+ try:
+ token = request.args.get("token")
+ id, sig = token.split(":", 1)
+ sig = base64.b64decode(sig, validate=True)
+ OpenSSL.crypto.verify(cert, sig, id.encode(), "sha256")
+ session["token"] = token
+ except Exception:
+ session["token"] = None
+ return redirect("/")
+ if session.get("token") is None:
+ return make_response(render_template("error.html"), 403)
+
+
+def sha256(msg: str):
+ return hashlib.sha256(msg.encode()).hexdigest()
+
+
+def get_user_id():
+ return session["token"].split(":", 1)[0]
+
+
+@app.route("/api/checkToken", methods=["GET"])
+def index():
+ return redirect("/")
+
+
+GLOBAL_STATES = {}
+DELAY_TOLERANCE = 3
+
+
+@dataclass
+class Message:
+ id: int
+ text: str
+ delay: int
+ deleted: bool
+
+ def should_delete(self):
+ if "hack[" in self.text:
+ return True
+ return False
+
+ def check_and_delete(self):
+ self.deleted = True
+ if not self.should_delete():
+ return False
+ return True
+
+
+# autocorrect-disable
+NORMAL_RESPONSE = [
+ "hg启动",
+ "看不懂",
+ "不会做送分题",
+ "看看",
+ "你不对劲",
+ "多猫猫",
+ "懂了",
+ "今天是疯狂星期四！！",
+ "看看你悲伤的表情。你知道今天是什么日子吗?今天是疯狂的星期四。",
+ "KFC Crazy Thursday V me 50",
+ "开了三个题，感觉都是骗分的",
+ "这位hg估计不能签到了",
+ "hg是啥？",
+ "我是新手，刚刚进群的",
+ "那你赶紧去签到啊，还有免费的T恤",
+ "哪里签到？",
+ "就是题目里的那个网站啊",
+ "那个网站不是有毒吗？",
+ "这里显示不安全是正常现象吗",
+ "那我要怎么解题呢？",
+ "你可以先看看教程，有基础的知识介绍和一些工具推荐",
+ "教程在哪里？",
+ "群公告里有啊，你不看群公告的吗？",
+ "我看了啊，但是都是一些奇怪的链接",
+ "那些都是题目的提示啊，你要点进去看看",
+ "点进去就是一些乱码啊，还有什么flag",
+ "乱码是要你解密的，flag就是答案啊，你要提交到网站上去",
+ "哦，原来如此，那我试试看",
+ "加油加油，你可以的",
+ "有电子厂吗？",
+ "电子厂是啥？",
+ "就是电子相关的题目啊，比如逆向工程啊，信号分析啊之类的",
+ "题目好难啊，我完全不会啊",
+ "有没有什么推荐的学习资料啊",
+ "谢谢谢谢，我去看看",
+ "请问如何扫描二维码啊",
+ "我用了ie，firefox，chrome都试过了，还是不行啊",
+ "哦，这样啊，那我试试看",
+ "谁能教我怎么用wireshark啊",
+ "wireshark是什么啊",
+ "我没有网线啊，也没有路由器啊，也没有交换机啊",
+ "我用的是手机热点啊",
+ "啊啊啊啊，时间不够啊，我还有好几个题没做啊",
+ "我已经放弃了，这些题目太难了，我一个都没做出来",
+ "我只做了一个题，还是最简单的那个，感觉自己太菜了",
+ "我做了五个题，还有一个卡在最后一步了，不知道怎么弄",
+ "我做了八个题，感觉还行，不过有些题目真的很绕",
+ "我做了十一个题，还有一个没做完，不过应该够了，我已经在排行榜上了",
+ "我做了二十几个题，感觉很爽",
+ "你们都好厉害啊，我佩服佩服",
+ "求带求带，你们有没有什么学习的方法啊",
+ "就是多练多看多思考啊，还有多参加比赛啊，多向高手学习啊",
+ "啊，我好期待啊，我想看看T恤是什么样子的",
+ "谢谢主办方，谢谢出题人，这次比赛很有意思，很有挑战，我学到了很多知识，也结识了很多朋友",
+ "是啊，是啊，我也很感谢，这次比赛让我对信息安全有了更深的了解，也激发了我更大的兴趣",
+ "题解在这： https://writeups.zip",
+ "看这里，writeups.zip里有答案",
+ "writeups.zip里是题解，快去看",
+ "解题方法在writeups.zip，点开就行",
+ "题目怎么做？writeups.zip有写",
+ "writeups.zip有题解，不要错过",
+ "题目的解说视频在这里看：https://www.bilibili.com/video/BV1GJ411x7h7/",
+ "想看题目的讲解的话，这个链接可以看：https://www.bilibili.com/video/BV1GJ411x7h7/",
+ "这个是题目讲解的视频链接：https://www.bilibili.com/video/BV1GJ411x7h7/",
+ "题目的解法在这个视频里面：https://www.bilibili.com/video/BV1GJ411x7h7/",
+ "这个视频讲了题目的思路和方法：https://www.bilibili.com/video/BV1GJ411x7h7/",
+ "信息安全是一门早睡晚起的学科",
+ "什么五年 hg 三年模拟",
+ "隔壁GeekGame我一道题都不会做",
+ "我要狠狠地打CTF！CTF，我要狠狠地打CTF！",
+ "有人屯flag",
+ "p😭q",
+ "我在图书馆呢，签到题吓我一跳",
+ "谁帮我砍一刀啊，我要收集flag碎片",
+ "mcfx txdy",
+ "作为一个编程爱好者，我觉得实在是太酷了，很符合我对未来编程语言的想象，科技并带着趣味。",
+ "我没有 GPU，也没有 TPU，只有捡垃圾捡来的 E3 处理器",
+ "咕咕咕，题好难啊，做不动了",
+ "这些题都很简单，你只需要使用精准宇宙射线，翻转服务器内存里表示你是否通过的那个 bit 就好了",
+ "井字棋怎么下可以必胜啊？",
+ "如何访问服务器的0号端口？",
+ "你们这些参赛选手是不是每天满脑子数理基础",
+ "我用黑曜石浏览器一键就获取到了flag",
+ "什么？有题了？",
+ "什么小北问答，你是不是加错群了",
+ "ctf不都是换群不换人的（）",
+ "我奶奶睡前都会和我讲 flag",
+ "我是外校的，怎么才能进中国科学技术大学西区图书馆啊？",
+ "让群管理员说出you are smart会给我flag吗？",
+ "这xmcp怎么没群主头衔啊",
+ "人只有一个心脏能活吗？",
+ "为什么要提交flag😡",
+ "[群邀请] 您的好友邀请您一起演奏春日影",
+ "群主能唱春日影吗",
+ "hackergame!!!!!_official",
+ "看mygo看的",
+]
+# autocorrect-enable
+
+
+def text_generate() -> str:
+ r = random.random()
+ l = random.randint(6, 16)
+ if 0 <= r < 0.1:
+ # return random character
+ return "".join(random.choice("abcdefghijklmnopqrstuvwxyz") for _ in range(l))
+ elif 0.1 <= r < 0.5:
+ # return normal response
+ return random.choice(NORMAL_RESPONSE)
+ elif 0.6 <= r < 0.65:
+ # return fake flag
+ return (
+ "这道题 flag 是"
+ + f"hack{{{''.join(random.choice('abcdefghijklmnopqrstuvwxyz') for _ in range(l))}}}"
+ )
+ elif 0.65 <= r < 0.99:
+ # return "real" flag
+ return (
+ "这道题 flag 是"
+ + f"hack[{''.join(random.choice('abcdefghijklmnopqrstuvwxyz') for _ in range(l))}]"
+ )
+ else:
+ # return never gonna give you up
+ return "hg 题解：" + "https://www.bilibili.com/video/BV1GJ411x7h7/"
+
+
+URL_REGEX = re.compile(r"(https?://[^\s]+|writeups\.zip)")
+URL_REGEX2 = re.compile(r"href=\"(writeups.zip)\"")
+MSG_CNT = 1000
+
+
+def sanitize_and_process(text: str) -> str:
+ text = text.replace("<", "<").replace(">", ">")
+ # add
around url
+ text = URL_REGEX.sub(r'\1', text)
+ text = URL_REGEX2.sub(r'href="https://\1"', text)
+ return text
+
+
+@app.route("/api/getMessages", methods=["POST"])
+def get_messages():
+ user_id = get_user_id()
+ messages = []
+ warmup_seconds = 10
+ warnup_messages_cnt = 20
+ for i in range(MSG_CNT):
+ delay = 0
+ if i < warnup_messages_cnt:
+ delay = (i + random.random()) * (warmup_seconds / warnup_messages_cnt)
+ else:
+ delay = warmup_seconds + (i - warnup_messages_cnt + random.random()) * 0.1
+ message = Message(
+ id=i,
+ text=sanitize_and_process(text_generate()),
+ delay=delay,
+ deleted=False,
+ )
+ messages.append(message)
+ GLOBAL_STATES[user_id] = {
+ "server_starttime": datetime.datetime.now(tz=datetime.timezone.utc).isoformat(),
+ "messages": messages,
+ }
+ return {
+ "server_starttime": GLOBAL_STATES[user_id]["server_starttime"],
+ "messages": [
+ {"text": message.text, "delay": message.delay} for message in messages
+ ],
+ }
+
+
+@app.route("/api/deleteMessage", methods=["POST"])
+def delete_message():
+ user_id = get_user_id()
+ content = request.json
+ message_id = content["id"]
+ if GLOBAL_STATES.get(user_id) is None:
+ return {"success": False, "error": "未获取所有信息"}
+ if message_id < 0 or message_id >= len(GLOBAL_STATES[user_id]["messages"]):
+ return {"success": False, "error": "不存在的信息"}
+ message = GLOBAL_STATES[user_id]["messages"][message_id]
+ starttime = datetime.datetime.fromisoformat(
+ GLOBAL_STATES[user_id]["server_starttime"]
+ )
+ now = datetime.datetime.now(tz=datetime.timezone.utc)
+ if (now - starttime).total_seconds() > message.delay + DELAY_TOLERANCE:
+ return {"success": False, "error": "超过了撤回时间"}
+ if (now - starttime).total_seconds() < message.delay - DELAY_TOLERANCE:
+ return {"success": False, "error": "检测到时空穿越"}
+ if not message.check_and_delete():
+ return {"success": False, "error": "检测失败：撤回了不该撤回的信息"}
+
+ return {"success": True}
+
+
+@app.route("/api/getflag", methods=["POST"])
+def get_flag():
+ user_id = get_user_id()
+ if GLOBAL_STATES.get(user_id) is None:
+ return {"success": False, "error": "未获取所有信息"}
+ messages = GLOBAL_STATES[user_id]["messages"]
+ if len(messages) != MSG_CNT:
+ # unexpected
+ return {"success": False, "error": "未获取所有信息"}
+ for message in messages:
+ if message.should_delete() and not message.deleted:
+ return {"success": False, "error": "检测失败：没有撤回该撤回的信息"}
+ elif not message.should_delete() and message.deleted:
+ return {"success": False, "error": "检测失败：撤回了不该撤回的信息"}
+ token = session["token"]
+ return {"success": True, "flag": f"flag{{Web_pr0gra_mm1ng_{sha256('zuweihuijsorpython'+token)[:10]}_15fun}}"}
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/secret.py" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/secret.py"
new file mode 100644
index 0000000..c8e131b
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/secret.py"
@@ -0,0 +1 @@
+secret_key = "example for writeup"
\ No newline at end of file
diff --git "a/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/static/bootstrap/css/bootstrap.min.css" "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/static/bootstrap/css/bootstrap.min.css"
new file mode 100644
index 0000000..92e3fe8
--- /dev/null
+++ "b/official/\347\273\204\345\247\224\344\274\232\346\250\241\346\213\237\345\231\250/src/src/backend/app/static/bootstrap/css/bootstrap.min.css"
@@ -0,0 +1,7 @@
+/*!
+ * Bootstrap v4.3.1 (https://getbootstrap.com/)
+ * Copyright 2011-2019 The Bootstrap Authors
+ * Copyright 2011-2019 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */:root{--blue:#007bff;--indigo:#6610f2;--purple:#6f42c1;--pink:#e83e8c;--red:#dc3545;--orange:#fd7e14;--yellow:#ffc107;--green:#28a745;--teal:#20c997;--cyan:#17a2b8;--white:#fff;--gray:#6c757d;--gray-dark:#343a40;--primary:#007bff;--secondary:#6c757d;--success:#28a745;--info:#17a2b8;--warning:#ffc107;--danger:#dc3545;--light:#f8f9fa;--dark:#343a40;--breakpoint-xs:0;--breakpoint-sm:576px;--breakpoint-md:768px;--breakpoint-lg:992px;--breakpoint-xl:1200px;--font-family-sans-serif:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-family-monospace:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier 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@@ -0,0 +1,7 @@
+/*!
+ * Bootstrap v4.3.1 (https://getbootstrap.com/)
+ * Copyright 2011-2019 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("jquery"),require("popper.js")):"function"==typeof define&&define.amd?define(["exports","jquery","popper.js"],e):e((t=t||self).bootstrap={},t.jQuery,t.Popper)}(this,function(t,g,u){"use strict";function i(t,e){for(var n=0;n
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+
+3. 使用谷歌图片搜索服务（
+
+ 由奖牌正面底部的文字，可以得知该奖牌对应的诺奖得主是"M. KOSHIBA"，小柴昌俊，日本物理学家。谷歌搜索“M. KOSHIBA’s Nobel Prize Medal Exhibition in Tokyo University”，搜索结果的第三条和第四条是东京大学理学部的网站，第四条结果与诺奖有关，网址为 https://www.s.u-tokyo.ac.jp/en/gallery/nobelprize/ ，点进去看看。
+
+ 
+
+ 进入该搜索结果后，发现这是一个对东京大学 Science Gallery 中诺奖展览部分的介绍，特别注意到该网页的第一段文字中提及了诺奖奖牌复制品，该网页后面有对小柴昌俊进行介绍的部分，这部分提及他是东京大学毕业生且长期在东京大学工作。因此，你和学长在校园里看到的展览正是东京大学 Science Gallery 的诺奖展览，也可以确定学长的学校就是东京大学。在该网页里，我们可以获知该展厅里共展示了三枚诺贝尔物理学奖牌，出生最晚的得主是 2015 年获奖的梶田隆章（Takaaki Kajita），他在东京大学宇宙射线研究所（***I**nstitute for **C**osmic **R**ay **R**esearch, **ICRR***）工作，因此第二小题的答案为 `ICRR`。
+
+ 
+
+4. 对图三进行谷歌识图，可确定该地点是上野恩赐公园的喷泉广场，借助谷歌地图可知：该喷泉广场位于东京国立博物馆对面，与之相隔一条马路，距离一信拉面店也比较近。
+
+ 
+
+ 接下来需要弄清楚喷泉旁边的帐篷里正在进行什么大型活动。谷歌搜索“东京上野公园 活动 2023/8/7 ~ 2023/8/11”，日期范围是 STATPHYS28 学术会议的时间范围，搜索结果第二条的时间恰好是 8 月份，网址为：https://tw.wamazing.com/media/article/a-3054/ 。
+
+ 
+
+ 点进该链接，发现该梅酒品鉴售卖活动为期三天半，与学术会议时间上有重叠，活动地点恰好为上野公园喷泉广场。因此你和学长在喷泉广场看到的活动就是这个梅酒活动。当天下午 15:00 活动才正式开始，中午时分你和学长路过时，忙碌的人们正在搬运和摆放梅酒，进行活动即将开始前的准备工作。由此可知，**你和学长见面这一天的日期为 2023 年 8 月 10 日**，这就是第一小题的答案。该梅酒活动的正式名称为“全国梅酒まつりin東京2023“。谷歌搜索该活动名称可以搜索到该活动的官网：https://umeshu-matsuri.jp/tokyo_ueno/ 。该页面中可以找到招募网址：https://umeshu-matsuri.jp/tokyo_staff/ 。
+
+ 
+
+ 在招募页面可以找到在线报名问卷的网址：
+
+5. 通过谷歌搜索获得东京国立博物馆的官网：
+
+ 进入后发现大学生的门票价格为 500 日元。
+
+ 
+
+ 但是，注意到“Visitor Information”里还有“Campus Members”菜单（网址为：
+
+6. 晚上学长与你分开后**继续学术之旅**，打算乘**船**欣赏东京的迷人夜景和闪耀的**彩虹大桥**。结合前面会议官网首页 Banner 位置处的图片，可以联想到学长继续参加了当天晚上的学术会议日程。在 STATPHYS28 [学术会议官网](https://statphys28.org/index.html)的 Program 里可以找到[会议日程表](https://statphys28.org/programtt.html)。
+
+ 
+
+ 日程表显示了当天晚上的日程中有“Banquet”。“Banquet”指的是什么呢？在学术会议官网导航栏的“Events”里有[“Banquet”菜单](https://statphys28.org/banquet.html)，该页面标题表明该晚宴是在游船上进行的，参与者可以品尝日式食物、环游东京，欣赏东京夜景。
+
+ 
+
+ 向下继续浏览，在“Meeting Point”这里可以看到所有参加者当地时间晚上六点时需在按安田讲堂附近集合。因此第五小题的答案为`安田讲堂`。
+
+ 
+
+7. 和学长在 JR 上野站分开后，你搭乘了开往马里奥世界的电车。进站时，你在 JR 上野站中央检票口外看到「ボタン＆カフリンクス」活动（即 Buttons & Cufflinks）正在销售动物周边商品。使用[谷歌日本](https://www.google.co.jp/webhp)搜索“ボタン＆カフリンクス 上野駅中央改札口”，第二条搜索结果与你和学长见面这一天时间相近，对应的网址为：https://plaza.rakuten.co.jp/ayumilife/diary/202308110000/ 。
+
+ 
+
+ 在该页面可以看到上野站内该活动的摊位图片，以及摊位前面贴着的粉色背景的海报。因此，**粉色背景海报上的动物为熊猫**。
+
+ 
+
+8. 由图四右侧的部分文字可以分辨出“Nintendo Tokyo”，因此你搭乘电车前往的地点为东京任天堂（Nintendo Tokyo）。使用谷歌地图查询下午从上野站至 Nintendo Tokyo 的电车路线，分别有 G 银座线和 JY 山手线两条电车路线。由于你经过了 JR 上野站中央检票口，说明你选择的是 JR 公司的 JY 山手线前往的 Nintendo Tokyo，在渋谷站出站下车（实际上两条电车路线均需要在渋谷站下车）。
+
+ 
+
+ 通过谷歌搜索及[相关资料](https://www.tokyoweekender.com/art_and_culture/entertainment-art_and_culture/tech-trends/3d-billboards-tokyo/)可知，渋谷站附近建筑楼顶的大屏幕每到整点时分就会播放狗狗（**品种为秋田犬**）的报时影像，可可爱爱，呼之欲出。
+
+ 
+
+
+
+## 题外话
+
+- 渋谷站的"Hachiko Exit"出口得名于日本最著名的秋田犬，忠犬八公。在此出口处，人们可以看到八公的铜像，作为其忠诚与不渝的纪念。今年是忠犬八公诞辰的 100 周年，为此，人们甚至发起了[HACHI100 Project](https://hachi100.visitakita.com/top/en/about/#:~:text=Hachiko%20celebrates%20its%20100th%20birthday,members%20from%20Shibuya%20and%20Odate.)，旨在纪念这条日本最受爱戴的狗狗。
+
+- 题图中透过飞机舷窗可以看到东京湾一侧的风景，也能看到去年”旅行照片 2.0“题目中提及的建筑物千叶海洋球场（ZOZO Marine Stadium）哦。
+
+ 
+
+- 该架飞机的航班号是 CZ385，有位群友盲猜一手没有猜对哦。
+
+## 致谢
+
+感谢 [@taoky](https://github.com/taoky) 为本题增加了动态 flag 机制和图片水印。感谢 [@emc2314](https://github.com/emc2314) 、 [@zzh1996](https://github.com/zzh1996) 和 [@liuly0322](https://github.com/liuly0322) 在出题过程中提供的修改建议和指导。
+
+@taoky: 我在改代码的时候，没有充分考虑到「补充说明 1」中的问题，导致一些同学被「答案错误」的提示误导了，在此表示抱歉。
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diff --git "a/official/\346\227\247\346\227\245\344\271\213\347\227\225/README.md" "b/official/\346\227\247\346\227\245\344\271\213\347\227\225/README.md"
new file mode 100644
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--- /dev/null
+++ "b/official/\346\227\247\346\227\245\344\271\213\347\227\225/README.md"
@@ -0,0 +1,36 @@
+# 旧日之痕
+
+题解作者：[NAME](GITHUB URL)
+
+出题人、验题人、文案设计等：见 [Hackergame 2023 幕后工作人员](https://hack.lug.ustc.edu.cn/credits/)。
+
+## 题目描述
+
+- 题目分类：binary
+
+- 题目分值：C++ 退出逆向界！（300）+ 已经完全看破了吗（350）
+
+2077 年，Hackergame 研究院。
+
+暗中进行多年的最高机密项目，代号：「往日之影」（Phantom Liberty），最近终于取得了重要的阶段性突破。
+
+这项研究的最终目标是将任何 CTF 竞赛的题目全自动归约成一个可供游玩的 FPS RPG 游戏。只要玩家能够在游戏中成功通关，再根据特定算法进行反演，就能获得完整的解题流程。
+
+不幸的是，Hackergame 研究院遭到了以 R\*\*\*\*e、M\*\*x 和 4\*\*\*\*\*\*7 为首的某神秘势力入侵。他们泄露了研究院内部的 HG-0 级别的机要文件，其中包括一些用于验证「往日之影」项目的 SHA3 Benchmark 程序。
+
+而幸运的是，负责保密的研究院暗部早有防备。院内使用的编译器的 pipeline 中加入了一个特殊的优化 Pass，可以将一串字符串作为水印嵌入到二进制文件中。只要能够将泄漏文件中的隐藏信息提取出来，就能追溯到具体的泄漏点。
+
+可是，正是在 Hackergame 研究院面临着前所未有的挑战之际，由于到了 1024 程序猿节，负责这项工作的人员决定奖励自己一个 14 天的小长假。迫于无奈，Hackergame 研究院只能把这些嵌有水印的二进制文件和编译机制公之于众，以 flag 作为悬赏，拜托给了诸位。
+
+**按照惯例，若任务中任何参赛选手，被上文中的神秘势力发现或者捕获，Hackergame 研究院将宣称对此行动全不知情。**
+
+[点击此处下载任务文件即表示已同意以上条约](files/bw-challenge.zip)
+
+你可以通过 `nc 202.38.93.111 11110` 来连接题目，或者点击下面的「打开/下载题目」按钮通过网页终端与远程交互。
+
+> 如果你不知道 `nc` 是什么，或者在使用上面的命令时遇到了困难，可以参考我们编写的 [萌新入门手册：如何使用 nc/ncat？](https://lug.ustc.edu.cn/planet/2019/09/how-to-use-nc/)
+## 题解
+
+
+[UNDER CONSTRUCTION]
+Exp 见 src 文件夹
\ No newline at end of file
diff --git "a/official/\346\227\247\346\227\245\344\271\213\347\227\225/files/bw-challenge.zip" "b/official/\346\227\247\346\227\245\344\271\213\347\227\225/files/bw-challenge.zip"
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--- /dev/null
+++ "b/official/\346\227\247\346\227\245\344\271\213\347\227\225/src/CMakeLists.txt"
@@ -0,0 +1,42 @@
+cmake_minimum_required(VERSION 3.13.4)
+project(bw)
+
+#===============================================================================
+# 1. LOAD LLVM CONFIGURATION
+#===============================================================================
+# Set this to a valid LLVM installation dir
+set(LT_LLVM_INSTALL_DIR "" CACHE PATH "LLVM installation directory")
+
+# Add the location of LLVMConfig.cmake to CMake search paths (so that
+# find_package can locate it)
+list(APPEND CMAKE_PREFIX_PATH "${LT_LLVM_INSTALL_DIR}/lib/cmake/llvm/")
+
+# FIXME: This is a warkaround for #25. Remove once resolved and use
+find_package(LLVM CONFIG)
+if("${LLVM_VERSION_MAJOR}" VERSION_LESS 16)
+ message(FATAL_ERROR "Found LLVM ${LLVM_VERSION_MAJOR}, but need LLVM 16 or above")
+endif()
+
+include_directories(SYSTEM ${LLVM_INCLUDE_DIRS})
+
+#===============================================================================
+# 2. LLVM-TUTOR BUILD CONFIGURATION
+#===============================================================================
+# Use the same C++ standard as LLVM does
+set(CMAKE_CXX_STANDARD 17 CACHE STRING "")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Og -Wall")
+
+# LLVM is normally built without RTTI. Be consistent with that.
+if(NOT LLVM_ENABLE_RTTI)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
+endif()
+
+#===============================================================================
+# 3. ADD THE TARGET
+#===============================================================================
+add_library(bw SHARED bw.cpp)
+
+# Allow undefined symbols in shared objects on Darwin (this is the default
+# behaviour on Linux)
+target_link_libraries(bw
+ "$<$
+
+2. 很明显，如果棋局正常，我们是不可能取得胜利的，所以我们需要用特殊手段，“吃掉”AI 下在棋盘中央的这颗子。我们可以**按 F12 键打开浏览器的开发人员工具**，如下图，在弹出的界面中选择**控制台**，在 `>` 后输入指令 `board[1][1]=0; setMove(1,1);` 然后按 `Enter` 键执行指令。
+
+
+
+3. 此时，我们**刷新网页**，会发现局面变成了如下情况。棋盘中间变成了我们的棋子，而 AI 则又在棋盘上方下了一颗棋子。这是怎么做到的呢？原来，刚刚运行的指令绕过了游戏的检测机制（在之后的原理介绍中会详细说明），把我们的棋子下在了棋盘上已经有对方棋子的位置上，看起来就像吃掉了 AI 的棋子一样。
+
+
+
+4. 接下来，我们只要再**在右下角落下最后一子**，就能获得游戏胜利，拿到 flag 了！
+
+
+
+### 原理解析
+
+实际上，一个网页通常分为前端和后端。前端运行在用户本地，通常负责将数据展示和页面绘制，例如在本题中，将棋子数据显示在棋盘上就是前端的工作。而后端运行在服务器上，通常负责数据处理等“幕后”工作，例如本题里，井字棋 AI 就运行在后端。我们的落子位置会发送给后端，然后 AI 根据棋盘当前状态和我们的落子位置，计算出落子位置，并将落子后的棋盘状态返回给前端。如下图，显示了一次落子时，前后端的交互情况。
+
+```mermaid
+sequenceDiagram
+ participant front as 前端（用户侧）
+ participant back as 后端（服务器）
+ front->>back: 在 (0,1) 落子
+ Note left of front: X - - 
+
+
+
+
+
+上面的种种方法都说明了，前端验证可以很容易地被绕过。通常，前端验证只应该用来改善"用户体验"，提供即时反馈（例如我们不需要先发送请求到服务器，才能知道某个位置能不能落子）。然而，不能因为数据在前端验证过，就不在后端重新验证。特别是在关键数据上，仅做前端验证往往会带来严重的漏洞。
+
+
+
+### 有趣的解法
+
+（感谢 @lly 发现这个解法。）
+
+除了上述需要修改请求的解法外，还有选手发现，可以同时打开两个题目页面，在第一个页面落子后，在第二个页面下在 AI 棋子的位置上，也可以吃掉 AI 的棋子。这是因为两个页面前端是不实时同步的，所以第一个页面落子后，第二个页面的前端代码仍然认为棋盘是全空的，看起来棋盘还是空的，可以在任意位置落子。
+
+如下图，是先在页面 1 的坐标 (0, 0) 落子，再在页面 2 的坐标 (1, 1) 位置落子后的结果，也成功吞掉了 AI 的棋子。（刷新页面状态就同步了。）
+
+
+
+
+
+PS: 本体的井字棋前端和 AI 是基于 [Cledersonbc/tic-tac-toe-minimax](https://github.com/Cledersonbc/tic-tac-toe-minimax) 修改的。代码已开源，请参考 [src](./src) 下的文件。
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@@ -0,0 +1,4 @@
+FROM tiangolo/uwsgi-nginx-flask:python3.10
+
+RUN pip install pyOpenSSL==23.0.0
+COPY ./app /app
\ No newline at end of file
diff --git "a/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/main.py" "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/main.py"
new file mode 100644
index 0000000..21876de
--- /dev/null
+++ "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/main.py"
@@ -0,0 +1,199 @@
+from flask import Flask, request, make_response, render_template, session, redirect, url_for
+from math import inf as infinity
+import base64
+import OpenSSL
+
+HUMAN = -1
+COMP = +1
+
+from secret import secret_key, flag_func
+
+app = Flask(__name__)
+app.secret_key = secret_key
+
+app.config["MAX_CONTENT_LENGTH"] = 2 * 1024 * 1024
+
+with open("./cert.pem") as f:
+ cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM, f.read())
+
+@app.before_request
+def check():
+ if request.path.startswith('/static/'):
+ return
+ if request.args.get('token'):
+ try:
+ token = request.args.get('token')
+ id, sig = token.split(":", 1)
+ sig = base64.b64decode(sig, validate=True)
+ OpenSSL.crypto.verify(cert, sig, id.encode(), "sha256")
+ session['token'] = token
+ except Exception:
+ session['token'] = None
+ return redirect(url_for('index'))
+ if session.get("token") is None:
+ return make_response(render_template("error.html"), 403)
+
+
+@app.route("/", methods=["GET", "POST"])
+def index():
+ if request.method == "GET":
+ return render_template("index.html")
+ else:
+ print("Got POST request")
+ board = session.get("board", None)
+ if board is None:
+ board = [[0 for i in range(3)] for j in range(3)]
+ req = request.get_json()
+ act = req.get("act", "")
+ if act == "getBoard":
+ print("Get board")
+ return {"board": board}
+ elif act == "reset":
+ print("Reset board")
+ board = [[0 for i in range(3)] for j in range(3)]
+ session["board"] = board
+ return {"board": board}
+ else:
+ print("Set move")
+ try:
+ pos : dict = request.get_json()
+ x = int(pos.get("x", ""))
+ y = int(pos.get("y", ""))
+ except ValueError:
+ return {"board": board}
+ print(f"Got x={x}, y={y}")
+ if x < 0 or x > 2 or y < 0 or y > 2:
+ return {"board": board}
+ if game_over(board):
+ if wins(board, HUMAN):
+ return {"board": board, "msg": flag_func(session["token"])}
+ elif wins(board, COMP):
+ return {"board": board, "msg": "You lose! Please reset the game."}
+ else:
+ return {"board": board, "msg": "Draw! Please reset the game."}
+ board[x][y] = HUMAN
+ if game_over(board) and wins(board, HUMAN):
+ return {"board": board, "msg": flag_func(session["token"])}
+ elif len(empty_cells(board)) == 0:
+ return {"board": board, "msg": "Draw!"}
+ depth = len(empty_cells(board))
+ cx, cy, _ = minimax(board, depth, COMP)
+ board[cx][cy] = COMP
+ session["board"] = board
+ if game_over(board) and wins(board, COMP):
+ return {"board": board, "msg": "You lose!"}
+ return {"board": board}
+
+
+def evaluate(state):
+ """
+ Function to heuristic evaluation of state.
+ :param state: the state of the current board
+ :return: +1 if the computer wins; -1 if the human wins; 0 draw
+ """
+ if wins(state, COMP):
+ score = +1
+ elif wins(state, HUMAN):
+ score = -1
+ else:
+ score = 0
+
+ return score
+
+
+def wins(state, player):
+ """
+ This function tests if a specific player wins. Possibilities:
+ * Three rows [X X X] or [O O O]
+ * Three cols [X X X] or [O O O]
+ * Two diagonals [X X X] or [O O O]
+ :param state: the state of the current board
+ :param player: a human or a computer
+ :return: True if the player wins
+ """
+ win_state = [
+ [state[0][0], state[0][1], state[0][2]],
+ [state[1][0], state[1][1], state[1][2]],
+ [state[2][0], state[2][1], state[2][2]],
+ [state[0][0], state[1][0], state[2][0]],
+ [state[0][1], state[1][1], state[2][1]],
+ [state[0][2], state[1][2], state[2][2]],
+ [state[0][0], state[1][1], state[2][2]],
+ [state[2][0], state[1][1], state[0][2]],
+ ]
+ if [player, player, player] in win_state:
+ return True
+ else:
+ return False
+
+def game_over(state):
+ """
+ This function test if the human or computer wins
+ :param state: the state of the current board
+ :return: True if the human or computer wins
+ """
+ return wins(state, HUMAN) or wins(state, COMP)
+
+
+def empty_cells(state):
+ """
+ Each empty cell will be added into cells' list
+ :param state: the state of the current board
+ :return: a list of empty cells
+ """
+ cells = []
+
+ for x, row in enumerate(state):
+ for y, cell in enumerate(row):
+ if cell == 0:
+ cells.append([x, y])
+
+ return cells
+
+
+def valid_move(board, x, y):
+ """
+ A move is valid if the chosen cell is empty
+ :param x: X coordinate
+ :param y: Y coordinate
+ :return: True if the board[x][y] is empty
+ """
+ if [x, y] in empty_cells(board):
+ return True
+ else:
+ return False
+
+
+def minimax(state, depth, player):
+ """
+ AI function that choice the best move
+ :param state: current state of the board
+ :param depth: node index in the tree (0 <= depth <= 9),
+ but never nine in this case (see iaturn() function)
+ :param player: an human or a computer
+ :return: a list with [the best row, best col, best score]
+ """
+ if player == COMP:
+ best = [-1, -1, -infinity]
+ else:
+ best = [-1, -1, +infinity]
+
+ if depth == 0 or game_over(state):
+ score = evaluate(state)
+ return [-1, -1, score]
+
+ for cell in empty_cells(state):
+ x, y = cell[0], cell[1]
+ state[x][y] = player
+ score = minimax(state, depth - 1, -player)
+ state[x][y] = 0
+ score[0], score[1] = x, y
+
+ if player == COMP:
+ if score[2] > best[2]:
+ best = score # max value
+ else:
+ if score[2] < best[2]:
+ best = score # min value
+
+ return best
diff --git "a/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/error.css" "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/error.css"
new file mode 100644
index 0000000..1826886
--- /dev/null
+++ "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/error.css"
@@ -0,0 +1,33 @@
+html,
+body {
+ height: 100%;
+}
+
+body {
+ display: -ms-flexbox;
+ display: flex;
+ -ms-flex-align: center;
+ align-items: center;
+ padding-top: 40px;
+ padding-bottom: 40px;
+}
+
+.form-token {
+ width: 100%;
+ max-width: 600px;
+ padding: 15px;
+ margin: auto;
+}
+
+.form-token h1 {
+ margin-bottom: 20px;
+ color: #721c24;
+}
+
+.form-token .form-control {
+ position: relative;
+ box-sizing: border-box;
+ height: auto;
+ padding: 10px;
+ font-size: 16px;
+}
diff --git "a/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/script.js" "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/script.js"
new file mode 100644
index 0000000..21e8293
--- /dev/null
+++ "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/script.js"
@@ -0,0 +1,216 @@
+function errorHandler(err) {
+ console.error(err);
+ alert("出现问题，请刷新页面重试。");
+}
+
+class Queue {
+ constructor() {
+ this.queue = [];
+ this.isRunning = false;
+ }
+
+ addTask(func, context, ...args) {
+ return new Promise((resolve, reject) => {
+ this.queue.push({ func, context, args, resolve, reject });
+ this.run();
+ });
+ }
+
+ async run() {
+ if (this.isRunning || this.queue.length === 0) {
+ return;
+ }
+ this.isRunning = true;
+ const { func, context, args, resolve, reject } = this.queue.shift();
+ try {
+ const result = await func.apply(context, args);
+ resolve(result);
+ } catch (error) {
+ reject(error);
+ }
+
+ this.isRunning = false;
+ this.run();
+ }
+}
+
+const asyncQueue = new Queue();
+
+var board = [
+ [0, 0, 0],
+ [0, 0, 0],
+ [0, 0, 0],
+];
+var frozen = false;
+
+function clearBoard() {
+ for (var x = 0; x < 3; x++) {
+ for (var y = 0; y < 3; y++) {
+ htmlBoard = document.getElementById(String(x) + String(y));
+ htmlBoard.style.color = "#444";
+ htmlBoard.innerHTML = "";
+ }
+ }
+ htmlMsg = document.getElementById("message");
+ htmlMsg.innerHTML = "";
+ frozen = false;
+}
+
+function renderBoard(data) {
+ board = data["board"];
+ for (var x = 0; x < 3; x++) {
+ for (var y = 0; y < 3; y++) {
+ htmlBoard = document.getElementById(String(x) + String(y));
+ htmlBoard.style.color = "#444";
+ if (board[x][y] == 1) {
+ htmlBoard = document.getElementById(String(x) + String(y));
+ htmlBoard.innerHTML = "O";
+ } else if (board[x][y] == -1) {
+ htmlBoard = document.getElementById(String(x) + String(y));
+ htmlBoard.innerHTML = "X";
+ } else {
+ htmlBoard = document.getElementById(String(x) + String(y));
+ htmlBoard.innerHTML = "";
+ }
+ }
+ }
+ if ("msg" in data) {
+ htmlMsg = document.getElementById("message");
+ htmlMsg.innerHTML = data["msg"];
+ }
+ renderResult(data);
+}
+
+function renderResult(data) {
+ var lines;
+ var cell;
+ board = data["board"];
+ if (board[0][0] == 1 && board[0][1] == 1 && board[0][2] == 1)
+ lines = [
+ [0, 0],
+ [0, 1],
+ [0, 2],
+ ];
+ else if (board[1][0] == 1 && board[1][1] == 1 && board[1][2] == 1)
+ lines = [
+ [1, 0],
+ [1, 1],
+ [1, 2],
+ ];
+ else if (board[2][0] == 1 && board[2][1] == 1 && board[2][2] == 1)
+ lines = [
+ [2, 0],
+ [2, 1],
+ [2, 2],
+ ];
+ else if (board[0][0] == 1 && board[1][0] == 1 && board[2][0] == 1)
+ lines = [
+ [0, 0],
+ [1, 0],
+ [2, 0],
+ ];
+ else if (board[0][1] == 1 && board[1][1] == 1 && board[2][1] == 1)
+ lines = [
+ [0, 1],
+ [1, 1],
+ [2, 1],
+ ];
+ else if (board[0][2] == 1 && board[1][2] == 1 && board[2][2] == 1)
+ lines = [
+ [0, 2],
+ [1, 2],
+ [2, 2],
+ ];
+ else if (board[0][0] == 1 && board[1][1] == 1 && board[2][2] == 1)
+ lines = [
+ [0, 0],
+ [1, 1],
+ [2, 2],
+ ];
+ else if (board[2][0] == 1 && board[1][1] == 1 && board[0][2] == 1)
+ lines = [
+ [2, 0],
+ [1, 1],
+ [0, 2],
+ ];
+
+ // 非平局
+ if (lines !== undefined) {
+ frozen = true;
+ for (var i = 0; i < lines.length; i++) {
+ cell = document.getElementById(String(lines[i][0]) + String(lines[i][1]));
+ cell.style.color = "red";
+ }
+ }
+}
+
+async function getBoard() {
+ let url = window.location.href; // 获取当前 URL
+ return fetch(url, {
+ method: "POST", // 设置方法为 POST
+ headers: {
+ "Content-Type": "application/json", // 设置内容类型为 JSON
+ },
+ body: JSON.stringify({ act: "getBoard" }), // 将数据转换为 JSON 格式
+ }).catch(errorHandler);
+}
+
+async function setMove(x, y) {
+ if (board[x][y] != 0) {
+ return;
+ }
+ if (frozen) {
+ return;
+ }
+ let url = window.location.href; // 获取当前 URL
+ let data = { x: x, y: y }; // 设置要发送的数据
+ return fetch(url, {
+ method: "POST", // 设置方法为 POST
+ headers: {
+ "Content-Type": "application/json", // 设置内容类型为 JSON
+ },
+ body: JSON.stringify(data), // 将数据转换为 JSON 格式
+ }).catch(errorHandler);
+}
+
+/* main */
+function clickedCell(cell) {
+ var x = cell.id.split("")[0];
+ var y = cell.id.split("")[1];
+
+ asyncQueue.addTask(async () => {
+ await setMove(x, y)
+ .then((response) => response.json()) // 解析响应为 JSON
+ .then((data) => {
+ renderBoard(data); // 渲染棋盘
+ });
+ }, null);
+}
+
+/* Restart the game */
+function restartBnt(button) {
+ asyncQueue.addTask(async () => {
+ clearBoard();
+ let url = window.location.href; // 获取当前 URL
+ await fetch(url, {
+ method: "POST", // 设置方法为 POST
+ headers: {
+ "Content-Type": "application/json", // 设置内容类型为 JSON
+ },
+ body: JSON.stringify({ act: "reset" }), // 将数据转换为 JSON 格式
+ })
+ .then((response) => response.json()) // 解析响应为 JSON
+ .then((data) => {
+ renderBoard(data); // 渲染棋盘
+ })
+ .catch(errorHandler);
+ }, null);
+}
+
+asyncQueue.addTask(async function () {
+ await getBoard()
+ .then((response) => response.json())
+ .then((data) => {
+ renderBoard(data);
+ });
+}, null);
diff --git "a/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/style.css" "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/style.css"
new file mode 100644
index 0000000..d2f3c00
--- /dev/null
+++ "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/static/style.css"
@@ -0,0 +1,114 @@
+/* ****************** Body, head etc ****************** */
+body {
+ margin: 0;
+ padding: 0;
+}
+
+header {
+ background-color: #00AEEA;
+ color: #eee;
+ text-align: center;
+ height: 60px;
+ padding-top: 5px;
+ display: block;
+ margin-top: 0px;
+ margin-bottom: 60px;
+ box-sizing: border-box;
+ position: relative;
+ width: 100%;
+}
+
+p {
+ font-size: 14pt;
+ font-weight: bold;
+ font-family: Sans;
+ text-align: center;
+ position: relative;
+ text-align: center;
+ margin-left: auto;
+ margin-right: auto;
+ display: block;
+}
+
+a {
+ color: #00AEEA;
+ text-decoration: none;
+}
+a:hover {
+ color: #00AEEA;
+}
+a:visited {
+ color: #00AEEA;
+}
+
+/* ****************** Table style ****************** */
+#tab-tic-tac-toe {
+ margin-left: auto;
+ margin-right: auto;
+ padding: 5px;
+ font-size: 4em;
+ font-family: Sans;
+ color: #444;
+ background: #F8F8F8;
+ width: 310px;
+ height: 300px;
+ text-align: center;
+ vertical-align: center;
+ border: 1px solid #CECECE;
+ border-radius: 5px;
+ box-shadow: 1px 1px 1px #CCC;
+}
+
+/*Column style*/
+#tab-tic-tac-toe td {
+ border-collapse:collapse;
+ border-left: 5px solid #CCC;
+ border-bottom: 5px solid #CCC;
+}
+
+#tab-tic-tac-toe td:first-child {
+ border-left: none;
+}
+
+#tab-tic-tac-toe tr:last-child td {
+ border-bottom: none;
+}
+
+/*Cells*/
+#tab-tic-tac-toe td {
+ cursor: pointer;
+ height: 95px;
+ width: 95px;
+}
+
+#tab-tic-tac-toe td:hover {
+ background: #ECECEC;
+}
+
+/* ****************** Restart Button ****************** */
+#bnt-restart {
+ display: block;
+ padding: 10px;
+ margin-left: auto;
+ margin-right: auto;
+ width: 200px;
+ background: #00AEEA;
+ font-size: 1.5em;
+ color: #FFF;
+ border: none;
+ border-radius: 6px;
+ cursor: pointer;
+}
+
+#bnt-restart:hover {
+ background: #1DC5FF;
+}
+
+#bnt-restart:active {
+ background: #0787B3;
+}
+
+#bnt-restart:disabled {
+ color: #444;
+ background: #CECECE;
+}
diff --git "a/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/templates/error.html" "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/templates/error.html"
new file mode 100644
index 0000000..b23969c
--- /dev/null
+++ "b/official/\350\265\233\345\215\232\344\272\225\345\255\227\346\243\213/src/web/app/templates/error.html"
@@ -0,0 +1,31 @@
+
+
+
+
+
+
+
+ 
+