📘 Specification Overview: #5chdat Directive

This document outlines the basic functionality and usage of the #5chdat directive, designed to simplify the embedding and referencing of 5ch (formerly 2ch) thread data within PukiWiki pages or similar environments.

🔍 What is #5chdat?

The #5chdat directive allows users to embed or link to archived 5ch thread data using a simplified syntax. It is particularly useful for referencing threads stored in .dat format or mirrored content, enabling easier navigation and integration into wiki-based documentation or archival projects.

🌐 Related Wiki Page

• 🔗 REQUIEM AND SILENCE – neogamma.loader.jp

📌 Related Documents

• 🔧 Planned Feature – Upcoming improvements and design goals
• 🔐 Security-Oriented Design – Safe plugin practices and password handling
• 🧭 wikiinfomation – Plugin behavior and known issues
• 📖 introduce.md – Project introduction and background
• 📄 ACKNOWLEDGEMENTS.md – Credits and inspirations
• 🧪 他のdat取得 – Notes on .dat parsing and legacy compatibility

🔐 Planned Feature: Manual Password Verification

To ensure secure handling of .dat file attachments and avoid unintended behavior, we are shifting away from automated processes.

Instead, we plan to implement a manual verification step:

• When a user initiates a .dat file operation (e.g., upload or parse), the plugin will pause and display a password input form
• The user must enter the correct password manually
• The plugin will verify the password using the same hashing method as PukiWiki (md5(md5($pass) . $salt))
• If the password is valid, the operation proceeds; otherwise, it is aborted

This approach avoids storing or exposing password hashes and ensures that all sensitive operations require explicit user intent.

🧾 Syntax

#5chdat(URL)

📄 Example Output

5chdat 実行例を見る 5ch版

入力URL: https://medaka.5ch.net/test/read.cgi/gameurawaza/1366108733/158
preg_match 結果:
$m[0] = https://medaka.5ch.net/test/read.cgi/gameurawaza/1366108733/158
$m[1] = medaka.5ch.net
$m[2] = gameurawaza
$m[3] = 1366108733
$m[4] = 158
DAT URL: https://medaka.5ch.net/gameurawaza/dat/1366108733.dat
✅ DAT取得成功
Server = medaka.5ch.net
Board = gameurawaza
Thread = 1366108733
DATサイズ = 122942 bytes
文字コード = SJIS-win
DAT行数: 537
1行目フィールド数: 5

🧠 コメント by softchip:

• 「Wiikeyって名前、チップの名前そのままハンドルにしてたの面白いよね」
• 「昔は“いけないこと”だったけど、今やると本体ごとBANされる時代」
• 「時代が変わっても、改造の誘惑とリスクは変わらないなぁ…」