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web+ap protocol handler #589

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smitten wants to merge 12 commits from smitten/akkoma:web-protocol-handler into develop
pull from: smitten/akkoma:web-protocol-handler
merge into: AkkomaGang:develop
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smitten commented 2023-07-15 04:03:15 +00:00
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This is a pass at implementing a web-based protocol handler which could be used to create URLs that reference remote users or posts, but that open locally at your home server.

This idea has been discussed before in a few places but no project has picked it up yet.

see mastodon issue - https://github.com/mastodon/mastodon/issues/19679
see fediverse-ideas issue - https://codeberg.org/fediverse/fediverse-ideas/issues/1

The goal is to register a web-based protocol handler* so that the following use cases would work:

  1. I am reading someone's blog and they want to link me to their fedi profile. Rather than opening the profile on their server then copy-pasting or remote-following, I could open it directly on my server, because it would be in the form of web+ap://portend.place/smitten.
  2. I see a post mentioned on another page, and I want to take actions on it, like star or reply or boost. Rather than copying the address and then searching for it on my home server, I could open it directly with a URL in the form of web+ap://portend.place/notice/AXfa06xMeen4I9wAzI. The page could even link there with an <a> tag.

There are some open questions for how this should behave -

  • What server address should handle the request?
  • What format should the URLs be?

I've gone with Soni's proposals for both of these questions because they seem straightforward and would be easy to implement for other fedi clients.

Server address of /.well-known/protocol-handler?target=%s (see draft for more info)

To prevent running authenticated requests at .well-known, this redirects to /api/v1/akkoma/protocol-handler?target=%s

For the format of the links themselves, I'm using web+ap (see proposal for more info)

Other syntax could be possible in the future, like addressing webfinger handles - e.g. web+ap:acct:smitten@portend.place.

* note that the UI for registering the handler is not part of this PR and would require some frontend work. The relevant JS is available with a static HTML file in web-protocol-register.js.

If there's any interest in Akkoma working to support this feature let me know. happy to tweak this code too, just a WIP.

This is a pass at implementing a web-based protocol handler which could be used to create URLs that reference remote users or posts, but that open locally at your home server. This idea has been discussed before in a few places but no project has picked it up yet. see mastodon issue - https://github.com/mastodon/mastodon/issues/19679 see fediverse-ideas issue - https://codeberg.org/fediverse/fediverse-ideas/issues/1 The goal is to register a [web-based protocol handler](https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerProtocolHandler/Web-based_protocol_handlers)* so that the following use cases would work: 1. I am reading someone's blog and they want to link me to their fedi profile. Rather than opening the profile on their server then copy-pasting or remote-following, I could open it directly on my server, because it would be in the form of `web+ap://portend.place/smitten`. 2. I see a post mentioned on another page, and I want to take actions on it, like star or reply or boost. Rather than copying the address and then searching for it on my home server, I could open it directly with a URL in the form of `web+ap://portend.place/notice/AXfa06xMeen4I9wAzI`. The page could even link there with an `<a>` tag. There are some open questions for how this should behave - * What server address should handle the request? * What format should the URLs be? I've gone with Soni's proposals for both of these questions because they seem straightforward and would be easy to implement for other fedi clients. Server address of `/.well-known/protocol-handler?target=%s` (see [draft](https://datatracker.ietf.org/doc/draft-soni-protocol-handler-well-known-uri/) for more info) To prevent running authenticated requests at .well-known, this redirects to `/api/v1/akkoma/protocol-handler?target=%s` For the format of the links themselves, I'm using web+ap (see [proposal](https://github.com/fedi-to/fedi-to.github.io/blob/main/webap.md) for more info) Other syntax could be possible in the future, like addressing webfinger handles - e.g. `web+ap:acct:smitten@portend.place`. \* note that the UI for registering the handler is not part of this PR and would require some frontend work. The relevant JS is available with a static HTML file in [web-protocol-register.js](https://akkoma.dev/AkkomaGang/akkoma/pulls/589/files#diff-65756de3ea738feb2ddc210cf8715ae9120ab5c3). If there's any interest in Akkoma working to support this feature let me know. happy to tweak this code too, just a WIP.
smitten reviewed 2023-07-15 04:13:25 +00:00
smitten commented 2023-07-15 13:15:51 +00:00
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Tokodon has implemented the web+ap protocol. Tokodon is a client for Plasma.

https://github.com/KDE/tokodon/blob/master/src/network/networkcontroller.cpp#L63-L112

FediText has also added support. FediText is an iOS client.

3373f6ef66

Tokodon has implemented the web+ap protocol. Tokodon is a client for Plasma. https://github.com/KDE/tokodon/blob/master/src/network/networkcontroller.cpp#L63-L112 FediText has also added support. FediText is an iOS client. https://github.com/feditext/feditext/commit/3373f6ef6682617ed49ee2640b8c11eb678b4b18
smitten reviewed 2023-07-16 22:58:01 +00:00
lib/pleroma/web/protocol_handler/protocol_handler_controller.ex Outdated
@ -0,0 +44,4 @@
defp find_and_redirect(%{assigns: %{user: user}} = conn, identifier) do
redirect_to_target(User.get_or_fetch("https://" <> identifier), conn)
|| redirect_to_target(Activity.search(user, "https://" <> identifier, [limit: 1]), conn)
smitten commented 2023-07-16 22:58:01 +00:00
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I'm not sure Activity.search is the best method to use here. I couldn't find something like Activity.get_or_fetch() that just took the post URL, but it's probably my unfamiliarity with the code.

The goal would be to find the user or record by their remote URL without doing any fuzzy search querying.

I'm not sure Activity.search is the best method to use here. I couldn't find something like Activity.get_or_fetch() that just took the post URL, but it's probably my unfamiliarity with the code. The goal would be to find the user or record by their remote URL without doing any fuzzy search querying.
darkkirb commented 2023-07-23 08:26:04 +00:00
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There is Pleroma.Object.Fetcher.fetch_object_from_id(id), which should work with any AP object ID

There is `Pleroma.Object.Fetcher.fetch_object_from_id(id)`, which should work with any AP object ID
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darkkirb commented 2023-07-23 09:36:12 +00:00
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Untested, but I added this code 5bbeeeeedd

Untested, but I added this code https://git.chir.rs/darkkirb/akkoma/commit/5bbeeeeedd84661f65fc9d1e7fc5338f63ed1b0c
smitten commented 2023-07-23 14:28:23 +00:00
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Untested, but I added this code 5bbeeeeedd

@darkkirb
Thanks for taking a look. I'm not finding this able to pull a User, I get {:error, "Object containment failed."}

For a post I do get a result back, but I'm not sure immediately how to use it because all the IDs in it are the remote URLs, so I can't redirect to the local representation without another step.

> Untested, but I added this code https://git.chir.rs/darkkirb/akkoma/commit/5bbeeeeedd84661f65fc9d1e7fc5338f63ed1b0c @darkkirb Thanks for taking a look. I'm not finding this able to pull a User, I get `{:error, "Object containment failed."}` For a post I do get a result back, but I'm not sure immediately how to use it because all the IDs in it are the remote URLs, so I can't redirect to the local representation without another step.
darkkirb commented 2023-07-23 19:55:31 +00:00
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Hm, then maybe it should work with only the activity line replaced with my code? I found that particular function by following the code in the search module (Pleroma.Search.DatabaseSearch). Currently working on integrating it with akkoma-fe so I’ll take another look maybe tomorrow

Hm, then maybe it should work with only the activity line replaced with my code? I found that particular function by following the code in the search module (Pleroma.Search.DatabaseSearch). Currently working on integrating it with akkoma-fe so I’ll take another look maybe tomorrow
smitten commented 2023-07-24 15:13:47 +00:00
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Hm, then maybe it should work with only the activity line replaced with my code? I found that particular function by following the code in the search module (Pleroma.Search.DatabaseSearch). Currently working on integrating it with akkoma-fe so I’ll take another look maybe tomorrow

Thanks, it needs to pass through Activity.get_create_by_object_ap_id afterwards to get the local 'Create' Activity record. Using DatabaseSearch.maybe_fetch() does both those steps, works well!

> Hm, then maybe it should work with only the activity line replaced with my code? I found that particular function by following the code in the search module (Pleroma.Search.DatabaseSearch). Currently working on integrating it with akkoma-fe so I’ll take another look maybe tomorrow Thanks, it needs to pass through `Activity.get_create_by_object_ap_id` afterwards to get the local 'Create' Activity record. Using `DatabaseSearch.maybe_fetch()` does both those steps, works well!
smitten changed title from WIP: web+ap protocol handler to web+ap protocol handler 2023-07-25 15:41:53 +00:00
smitten added 22 commits 2023-07-25 15:42:02 +00:00
docs: Update Pleroma references to Akkoma in optional packages guide
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b3fc098b83 
This apparently slipped past though all of the doc updates from a while
back.
The frontend got renamed a while back, so the docs should be updated to
reflect that.
Add config for media subdomain for Caddy
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40627a94d4 
A recent group of vulnerabilities have been found in Pleroma (and
inherited by Akkoma) that involve media files either uploaded by local
users or proxied from remote instances (if media proxy is enabled).

It is recommended that media files are served on a separate subdomain
in order to mitigate this class of vulnerabilities.

Based on https://meta.akkoma.dev/t/another-vector-for-the-injection-vulnerability-found/483/2
docs: Add Kaiteki to list of clients
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5fe41df8aa 
Add embeddable posts

Closes #1288

See merge request pleroma/pleroma!2319
fix the /embed endpoint
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593ddbd796
Merge pull request 'Fix the /embed endpoint' (#540) from mikihau/akkoma:develop into develop
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210df6fe92 
Reviewed-on: #540
Reviewed-on: #551
Reviewed-on: #555
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Reviewed-on: #550
Exclude deactivated users from emoji reaction lists
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Correct behaviour of mediaproxy blocklist
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Update changelog
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fix ImageMagick typo in media_graphics_packages.md
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Merge branch 'develop' into active-emoji-reactions
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Reviewed-on: #592
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Allow nil attachments
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darkkirb commented 2023-07-25 15:49:59 +00:00
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My static-fe changes are here: 55bc84da35. I’m unsure about the icon to use, that icon is currently used for “opening on remote instance” on akkoma-fe where I currently use a phone icon. The other suggestion I received was the same icon firefox uses for “open in app”, which is a pro-only fontawesome icon :/

My static-fe changes are here: https://git.chir.rs/darkkirb/akkoma/commit/55bc84da3592c8e63b935ce94ead8c8446a05df3. I’m unsure about the icon to use, that icon is currently used for “opening on remote instance” on akkoma-fe where I currently use a phone icon. The other suggestion I received was the same icon firefox uses for “open in app”, which is a pro-only fontawesome icon :/
smitten commented 2023-07-25 16:20:20 +00:00
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My static-fe changes are here: 55bc84da35. I’m unsure about the icon to use, that icon is currently used for “opening on remote instance” on akkoma-fe where I currently use a phone icon. The other suggestion I received was the same icon firefox uses for “open in app”, which is a pro-only fontawesome icon :/

@darkkirb amazing, thanks! I think it does need its own icon, and maybe even a more specific term than 'Open in your client' (although I think that's decently clear).

I made a post to try and get some suggestions around this, I'm really not sure what the best way to represent the idea is.

https://portend.place/notice/AY3f5jqcNfznWGYuIK

> My static-fe changes are here: https://git.chir.rs/darkkirb/akkoma/commit/55bc84da3592c8e63b935ce94ead8c8446a05df3. I’m unsure about the icon to use, that icon is currently used for “opening on remote instance” on akkoma-fe where I currently use a phone icon. The other suggestion I received was the same icon firefox uses for “open in app”, which is a pro-only fontawesome icon :/ @darkkirb amazing, thanks! I think it does need its own icon, and maybe even a more specific term than 'Open in your client' (although I think that's decently clear). I made a post to try and get some suggestions around this, I'm really not sure what the best way to represent the idea is. https://portend.place/notice/AY3f5jqcNfznWGYuIK
smitten commented 2023-07-26 02:10:08 +00:00
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I did a poll to try to get feedback and 'Fedi Link' seems to be the most popular. I implemented in akkoma-fe here, using ActivityPub icon:

https://akkoma.dev/AkkomaGang/akkoma-fe/compare/develop...smitten/akkoma-fe:develop

I did [a poll](https://portend.place/notice/AY49HGJL1MLE0qPGcK) to try to get feedback and 'Fedi Link' seems to be the most popular. I implemented in akkoma-fe here, using ActivityPub icon: https://akkoma.dev/AkkomaGang/akkoma-fe/compare/develop...smitten/akkoma-fe:develop
extra-buttons.png
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smitten force-pushed web-protocol-handler from c0c8d13404 to 98a117b10b 2023-07-27 20:47:17 +00:00 Compare
smitten force-pushed web-protocol-handler from 98a117b10b to f9feb46d6e 2023-07-27 20:53:55 +00:00 Compare
smitten force-pushed web-protocol-handler from 26df052e8f to 637bca14cc 2023-07-28 19:40:47 +00:00 Compare
smitten force-pushed web-protocol-handler from 05117a0cb3 to 5469a1268e 2023-08-20 17:33:59 +00:00 Compare
smitten commented 2023-08-20 17:41:13 +00:00
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I received some good feedback on this from a GoToSocial user who primarily uses Semaphore. They were saying that it's more of a client-side feature exclusively, since we can't know what frontend route is relevant to redirect to.

It's making me think that maybe the redirect behavior is not a good idea, and I should implement this in akkoma-fe instead. (I'm not actually sure how Akkoma handles routes for the various frontend apps, I'm assuming they can choose their own routes independently).

So I may try to rework this so that it's just a new search endpoint, just to cover the specific behavior of looking up the user/post by URI. And then akkoma-fe could hit that endpoint and redirect itself.

I received [some good feedback](https://portend.place/notice/AYKSLKNB7gxo6pg9iK) on this from a GoToSocial user who primarily uses Semaphore. They were saying that it's more of a client-side feature exclusively, since we can't know what frontend route is relevant to redirect to. It's making me think that maybe the redirect behavior is not a good idea, and I should implement this in akkoma-fe instead. (I'm not actually sure how Akkoma handles routes for the various frontend apps, I'm assuming they can choose their own routes independently). So I may try to rework this so that it's just a new search endpoint, just to cover the specific behavior of looking up the user/post by URI. And then akkoma-fe could hit that endpoint and redirect itself.
smitten closed this pull request 2023-10-08 13:26:48 +00:00
smitten commented 2023-10-08 19:25:55 +00:00
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Have received a lot of feedback that the backend changes to support this behavior are confusing, I may try a similar PR that is frontend-only. It would be helpful to have a new search endpoint that is more precise (returns only objects matching the queried ID instead of fuzzy search) for the frontend to use, but the web-protocol handler could be defined entirely in the client.

see new proposal on FEP: https://socialhub.activitypub.rocks/t/fep-07d7-a-custom-url-scheme-and-web-based-protocol-handlers-for-linking-to-activitypub-resources/3588

Have received a lot of feedback that the backend changes to support this behavior are confusing, I may try a similar PR that is frontend-only. It would be helpful to have a new search endpoint that is more precise (returns only objects matching the queried ID instead of fuzzy search) for the frontend to use, but the web-protocol handler could be defined entirely in the client. see new proposal on FEP: https://socialhub.activitypub.rocks/t/fep-07d7-a-custom-url-scheme-and-web-based-protocol-handlers-for-linking-to-activitypub-resources/3588
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