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daas's Introduction

DaaS

CI Twitter

This project's objective is to spread puns posted on RDC official slack's #ダジャレ channel through an official Twitter account.
Automatically determines whether a posted sentence is pun, and if true, gives a star with the rating engine.

Requirements

  • Python ~> 3.9
  • pipenv

Usage

Install dependencies

pip install -U pip
pip install pipenv
pipenv install

Running the application in dev mode

$ pipenv run start

If you want to know the details of how to use this, run the following command.

$ pipenv run help

Running the application in production mode

If you want to specify version, you can see versions here.

docker run -p 8000:8000 ghcr.io/rits-dajare/daas:latest

daas's People

Contributors

averak avatar ran350 avatar ygkn avatar

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Watchers

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daas's Issues

ReDoS警察だ!!!!

該当箇所

https://github.com/rits-dajare/DaaS/blob/947e9b9a738beb994c5e8f0369f2f0d6c3fe8354/config/judge_reject_dict.txt#L1

.+「.+」 は脆弱性だ!! 多項式的にステップ数が増加する!!

攻撃例

ジャッジエンジンが数千文字のマッチングを許容しているなら,連続したを入力することで攻撃可能だ!!
マッチング文字数に上限を設定しているなら問題ない!!! このissueはcloseしてくれ!!

import re
import sys
re.search(pattern=r'.+「.+」', string='「'*int(sys.argv[1]))
╰─ time python test.py 3000
python src/c.py 3000  5.71s user 0.03s system 100% cpu 5.729 total

╰─ time python test.py 4000
python src/c.py 4000  16.14s user 0.01s system 100% cpu 16.154 total

解決案

脆弱性の原因は,2つの.の両方がにもマッチし得ることだ!!
だから,代えて [^「]+「.+」 なら大丈夫だ!!

╰─ time python src/c.py 4000
python src/c.py 4000  0.05s user 0.02s system 105% cpu 0.070 total

以上だ!!

string indices must be integers

問題

町を焦土にしたい衝動ダジャレを入力すると,500エラーが発生する。

レスポンス

{"status": "error", "message": "string indices must be integers"}

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