What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

kyu3（キューさん） :vivaldi_red: @kyu3a@vivaldi.net
Public

イギリスの規制法でWikipediaが「破壊される」としてウィキメディア財団が法的措置に踏み切る - GIGAZINE
gigazine.net/news/20250509-wik

『Wikipediaが最も規制が厳しい「カテゴリー1」に分類される可能性が濃厚に』

『「カテゴリー1」は、公共への影響が広範に及ぶ大規模な商用プラットフォームやソーシャルメディアを念頭に置いた分類で、該当する企業はユーザーの身元確認や、匿名ユーザーによる記事の投稿のブロックなど、負担の大きいコンプライアンス規定が義務付けられます。

もし、これらが…適用された場合、Wikipediaのボランティア編集者の安全やプライバシーが損なわれ、本来はコンテンツの保護や改善に充てられるべき資源が対応に費やされることにより、記事が改ざんされたり破壊されたりするおそれがあると、ウィキメディア財団は主張』

『Wikipediaのトップページにある「今日の一枚」をユーザーが選ぶことさえ、カテゴリー1の分類要件のひとつである「コンテンツ推奨システム」に該当するおそれがある』

イギリスの規制法でWikipediaが「破壊される」としてウィキメディア財団が法的措置に踏み切る

違法薬物や児童の性的虐待、テロなどに関連する有害コンテンツを規制するために制定されたイギリスの法律の規定が、フリー百科事典「Wikipedia」にまで適用され、Wikipediaが改ざんや破壊行為にさらされるおそれがあるとして、Wikipediaを運営するウィキメディア(Wikimedia)財団が法的異議申し立てを行ったことを発表しました。

gigazine.net · GIGAZINE

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Stefano Marinelli @stefano@bsd.cafe
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When the week is already tough and you don't have time to deal with more issues, you find your car window shattered (probably a rock on the highway), just to remind you that there's always some problem out there having fun cutting into your time for everything else 🙂

Close-up photo of a car windshield with a small chip and crack, likely caused by a stone impact; reflections of the sky and surroundings are visible on the glass surface.
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Ayo Ayco @ayo@ayco.io
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I realized today that seeing code feels like a safe space for me. Considering that outside if it is a lot of mess I don’t have control.

Code and guitar, probably are my safe places

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洪 民憙 (Hong Minhee) @hongminhee@hollo.social
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Shared by Fedify: an ActivityPub server framework

Looking for implementations with support! 🔍

As mentioned in the Fedify announcement below, I've implemented RFC 9421 (HTTP Message Signatures) and need to verify its interoperability with other ActivityPub implementations.

The challenge is that most major ActivityPub projects don't seem to have full RFC 9421 implementations in production yet. If you're working on an ActivityPub project that:

  • has implemented RFC 9421 (even in a development branch)
  • is currently implementing it
  • has plans to implement it soon

Please reach out! I'd love to collaborate on interoperability testing to ensure our implementations work properly with each other before merging this into 's main branch.

Any leads or connections would be greatly appreciated! 🙏

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モナコ広告│しばらくイベントおやすみ @monaco_koukoku@misskey.design
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Shared by モナコ広告 :fedibird1: ＠技術・雑談

【5/11 文学フリマ東京40 出店!】ブース: O-13

『令和6年令和めぐり』
まだ始まって間もない新元号「令和」ですが、すでに街には「令和」と名の付く地名やスポットが生まれています。そんな「令和」な場所5か所を訪問した記録です。

『令和6年令和めぐり』表紙
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The Real Grunfink @grunfink@comam.es
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Shared by Stefano Marinelli

I'm glad to announce the release of version 2.76 of , the simple, minimalistic instance server written in C. It includes the following changes:

Added Webmention support for links (Markdown-style or direct) written in a post.

Added new command-line options for list maintenance.

Display custom emoji in more places (contributed by dandelions).

Mastodon API: fixed infinite scroll in many clients (thanks to cheeaun for giving me the clue), added /api/v1/accounts/.../lists endpoint (contributed by dandelions).

Email notifications can now be sent via libcurl SMTP instead of spawning the /usr/sbin/sendmail program. To use this new feature, some additional server configuration is needed, see snac(8) (contributed by shtrophic).

https://comam.es/what-is-snac

If you find useful, please consider buying grunfink a coffee or contributing via LiberaPay.



Summary card of repository grunfink/snac2

snac2

A simple, minimalistic ActivityPub instance written in portable C

codeberg.org · Codeberg.org

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モナコ広告│しばらくイベントおやすみ @monaco_koukoku@misskey.design
Public

【5/11 文学フリマ東京40 出店!】ブース: O-13

『令和6年令和めぐり』
まだ始まって間もない新元号「令和」ですが、すでに街には「令和」と名の付く地名やスポットが生まれています。そんな「令和」な場所5か所を訪問した記録です。

『令和6年令和めぐり』表紙
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洪 民憙 (Hong Minhee) @hongminhee@hackers.pub
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Shared by 洪 民憙 (Hong Minhee)

Fedify에 드디어 RFC 9421을 얼추 구현했고, 이제 상호운용성 테스트를 위해 Mastodon의 특정 브랜치를 실제로 인스턴스로 띄워서 액티비티를 송수신해봐야 한다. 그런데 Mastodon 띄우기가 너무나 귀찮다… (Mastodon 띄우기 귀찮아서 ActivityPub 개발 시작한 사람.)

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洪 民憙 (Hong Minhee) @hongminhee@hackers.pub
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Shared by bgl gwyng

Fedify에 드디어 RFC 9421을 얼추 구현했고, 이제 상호운용성 테스트를 위해 Mastodon의 특정 브랜치를 실제로 인스턴스로 띄워서 액티비티를 송수신해봐야 한다. 그런데 Mastodon 띄우기가 너무나 귀찮다… (Mastodon 띄우기 귀찮아서 ActivityPub 개발 시작한 사람.)

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なうぞめ @nz@misskey.pm
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駅で面白そうって思うアニメの広告見たけど名前忘れたのでその為に再度出かける必要がある。

Twitterとかで時系列検索したけど最近設置された広告なのかTweetしている人を確認できていない・・

どうしようかな～。

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David Pierce @imdavidpierce@threads.net
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Hi friends! It's Thursday and it is that time: I'm putting together this week's Installer and want to know everything you're into. What are you playing / watching / reading / listening to / poking with a stick this week? Tell me so I can tell everyone! (And subscribe to Installer!)

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blainsmith @blainsmith@snac.rblgk.sh
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Shared by @reiver ⊼ (Charles) :batman:

Wrote up an to get feedback on adding support to https://apply.coop soon after we launch. If anyone else has feedback it is certainly welcome! It does require a Codeberg account to comment, but we're open to email feedback as well.

I am not an ActivityPub expert so a lot of this was learning while planning this out.

https://codeberg.org/limeleaf/apply.coop/issues/213


apply.coop

apply.coop makes it easy to find qualified candidates who share your org's values and are excited to contribute.

apply.coop · Apply.coop - Your Gateway to the Worker Ownership Revolution

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Fedify: an ActivityPub server framework @fedify@hollo.social
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Shared by Esurio

We're excited to announce that we've implemented RFC 9421 (HTTP Message Signatures) in , complete with our double-knocking mechanism to maintain backward compatibility with the draft cavage version.

This implementation includes both signature generation and verification, meaning is used when both sending and receiving activities. While we haven't merged the RFC 9421 implementation branch yet, we're currently conducting interoperability tests with development versions of Mastodon and other implementations. Once these tests confirm compatibility, we'll proceed with the merge.

As noted in the attached docs, although RFC 9421 is the final and official standard for HTTP Signatures, the draft cavage version remains widely used across the . Our double-knocking mechanism ensures maximum compatibility by trying the RFC 9421 version first, then falling back to draft cavage if needed.

Currently, we support RSA-PKCS-v1.5 key pairs for generating HTTP Message Signatures, with plans to expand to other signature types in future releases.

We look forward to contributing to a more standardized and secure fediverse!

HTTP Message Signatures This API is available since Fedify 1.6.0. RFC 9421, also known as HTTP Message Signatures, is the final revision of the HTTP Signatures specification. Although it is the official standard, it is not widely used in the fediverse yet. As of May 2025, major ActivityPub implementations, such as Mastodon, et al., still rely on the draft cavage version of HTTP Signatures for signing portable activities. Fedify automatically signs activities with the sender's private key if the actor keys dispatcher is set and the actor has any RSA-PKCS#1-v1.5 key pair. If there are multiple key pairs, Fedify selects the first RSA-PKCS#1-v1.5 key pair among them. NOTE Although HTTP Message Signatures support other than RSA-PKCS#1-v1.5, Fedify currently supports only RSA-PKCS#1-v1.5 key pairs for generating HTTP Message Signatures. This limitation will be lifted in the future releases.Double-knocking HTTP Signatures This API is available since Fedify 1.6.0. As you read above, there are two revisions of HTTP Signatures: the draft cavage version and the RFC 9421 version. The draft cavage version is declared as obsolete, but it is still widely used in the fediverse, and many ActivityPub implementations still rely on it. On the other hand, the RFC 9421 version is the official standard, but it is not widely used yet. To support both versions of HTTP Signatures, Fedify uses the double-knocking mechanism: trying one version, then falling back to another if rejected. If it's the first encounter with the recipient server, Fedify tries the RFC 9421 version first, and if it fails, it falls back to the draft cavage version. If the recipient server accepts the RFC 9421 version, Fedify remembers it and uses the RFC 9421 version for the next time. If the recipient server rejects the RFC 9421 version, Fedify falls back to the draft cavage version and remembers it for the next time.
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Epiphyt @epiphyt@epiph.yt
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Shared by @reiver ⊼ (Charles) :batman:

After I published a recent article where I showed how to mitigate an accidental DDoS after enabling ActivityPub for WordPress with the Surge plugin, I found an optimization for improved cache handling. Out of the box, there’s a problem with the default configuration since Surge ignores the Accept header.

[…]

epiph.yt/en/blog/2025/optimize

Optimize Surge configuration for ActivityPub | Epiphyt

The plugin Surge ignores the Accept header, which is important for ActivityPub. Through a smart solution you can enable it to build a separate cache version.

epiph.yt · Epiphyt

Link author: Matze@matze@dewp.space

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洪 民憙 (Hong Minhee) @hongminhee@hackers.pub
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Fedify에 드디어 RFC 9421을 얼추 구현했고, 이제 상호운용성 테스트를 위해 Mastodon의 특정 브랜치를 실제로 인스턴스로 띄워서 액티비티를 송수신해봐야 한다. 그런데 Mastodon 띄우기가 너무나 귀찮다… (Mastodon 띄우기 귀찮아서 ActivityPub 개발 시작한 사람.)

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David Nathanson @D_J_Nathanson@esq.social
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An ICE action in Newton turns rough, and secrecy follows | WBUR News wbur.org/news/2025/05/08/ice-b

In this video screenshot, federal agents can be seen struggling with a man they arrested on the Newton-Watertown line. (Still from a video obtained by WBUR)

An ICE action in Newton turns rough, and secrecy follows

Federal agents smashed the windows of a car and pulled out two men, video footage shows. They handcuffed out man and dragged the other one out; he struggled until five ICE agents pinned him to the ground and he can be heard screaming. A neighbor shouted at the agents to stop. 

www.wbur.org

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モナコ広告│しばらくイベントおやすみ @monaco_koukoku@misskey.design
Public
Shared by モナコ広告 :fedibird1: ＠技術・雑談

【5/11 文学フリマ東京40 出店!】ブース: O-13

『紅白看板マルわかり図鑑DX』
かつて存在した金融業者「マルフク」の看板を追いかけている著者が、看板の細かすぎるバリエーションや珍しいタイプの看板を解説。46ページの大ボリューム！

『紅白看板マルわかり図鑑DX』表紙 モナコ広告
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モナコ広告│しばらくイベントおやすみ @monaco_koukoku@misskey.design
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【5/11 文学フリマ東京40 出店!】ブース: O-13

『紅白看板マルわかり図鑑DX』
かつて存在した金融業者「マルフク」の看板を追いかけている著者が、看板の細かすぎるバリエーションや珍しいタイプの看板を解説。46ページの大ボリューム！

『紅白看板マルわかり図鑑DX』表紙 モナコ広告
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시아란 🌌 Private @siaranics.siaran.kr@bsky.brid.gy
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Shared by 잇창명 EatChangmyeong💕

세계화 시대에는 먼 나라 전쟁도 가까운 삶에 영향을 준다. 유럽이 점점 우리에게서 멀어지고 있다. 러시아 영공 통과가 가능하던 시절 서울에서 파리까지 편도로 약 11시간이 걸렸다. 러시아를 통과하지 못해 노선이 남쪽으로 우회하기 시작했는데 그 남쪽으로도 아프간, 시리아, 레바논, 이스라엘을 피해야 한다. 결국 13~14시간까지 늘어났다. 인도-파키스탄 경계를 지나칠 수 없게 되면 또 한참 남쪽으로 돌게 된다. 이러다간 두바이 환승이 필수가 되거나 소련 시절의 앵커리지 북극항로가 되돌아오는 수가 있다.

RE: https://bsky.app/profile/did:plc:vxgwb2wg74hcpmfjcmwm7dkt/post/3loqb6o55b222

이진서🕯️ (@jinnys0.bsky.social)

아까 라디오 뉴스 듣는데 지금 인도-파키스탄 쪽 항로가 막혀버려서 이제 유럽과 아시아를 오가는 항공편들이 러시라도 막히고 인도-파키스탄도 막혀서 아랍쪽으로 경유해서 와야 하는데 그럼 최대 4시간까지도 비행시간이 늘어날 수 있다고. 물론 기름값도 더 들고 항공편이 몰리면서 한동안 혼란(혼잡?)스러울 예정이라고 함;

bsky.app · Bluesky Social

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Randahl Fink @randahl@mastodon.social
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In Moscow, Chinese president Xi is celebrating the “Victory Day” sitting right next to Putin and looking at the deadly drones Putin is using to kill civilians in Ukraine.

Every citizen of the free world: Chose something better than “made in China”.

Xi next to Putin.The Russian version of the Shahed-136 drone displayed on a number of trucks.
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시아란 🌌 Private @siaranics.siaran.kr@bsky.brid.gy
Public

세계화 시대에는 먼 나라 전쟁도 가까운 삶에 영향을 준다. 유럽이 점점 우리에게서 멀어지고 있다. 러시아 영공 통과가 가능하던 시절 서울에서 파리까지 편도로 약 11시간이 걸렸다. 러시아를 통과하지 못해 노선이 남쪽으로 우회하기 시작했는데 그 남쪽으로도 아프간, 시리아, 레바논, 이스라엘을 피해야 한다. 결국 13~14시간까지 늘어났다. 인도-파키스탄 경계를 지나칠 수 없게 되면 또 한참 남쪽으로 돌게 된다. 이러다간 두바이 환승이 필수가 되거나 소련 시절의 앵커리지 북극항로가 되돌아오는 수가 있다.

RE: https://bsky.app/profile/did:plc:vxgwb2wg74hcpmfjcmwm7dkt/post/3loqb6o55b222

이진서🕯️ (@jinnys0.bsky.social)

아까 라디오 뉴스 듣는데 지금 인도-파키스탄 쪽 항로가 막혀버려서 이제 유럽과 아시아를 오가는 항공편들이 러시라도 막히고 인도-파키스탄도 막혀서 아랍쪽으로 경유해서 와야 하는데 그럼 최대 4시간까지도 비행시간이 늘어날 수 있다고. 물론 기름값도 더 들고 항공편이 몰리면서 한동안 혼란(혼잡?)스러울 예정이라고 함;

bsky.app · Bluesky Social

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잇창명 EatChangmyeong💕 @eatch.dev@bsky.brid.gy
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정치얘기를 뭐라고 하든 욕먹을 것 같긴 한데 현재진행형으로 광장을 배신하고 있는 민주당도 싫지만 "윤석열이 되면 왜 안되는데요"의 정의당(새 정당명이 뭐더라)도 별로다 그래도 내란의힘에 표를 줄 수는 없으니까 어쨌든 둘 중 하나를 골라야 되는데..... 마음을 정하기가 힘들다

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