Upgrade apub lib, correct webfinger content-type (#4498)

* Upgrade apub lib, correct webfinger content-type

* fmt

* fix test by avoiding network fetch

Cargo.lock

@@ -16,9 +16,9 @@ checksum = "8f27d075294830fcab6f66e320dab524bc6d048f4a151698e153205559113772"
 
 [[package]]
 name = "activitypub_federation"
-version = "0.5.1-beta.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "866db431760d14a7360f12e75ad48f3265b5b89cd2303e548a02bcc8983e4fcd"
+checksum = "eee115a53849bbcac6c953495b5f9322b56680c0a1bdef6813183f0453f9ee3c"
 dependencies = [
  "activitystreams-kinds",
  "actix-web",
@@ -35,7 +35,7 @@ dependencies = [
  "http-signature-normalization",
  "http-signature-normalization-reqwest",
  "httpdate",
- "itertools 0.12.0",
+ "itertools 0.12.1",
  "moka",
  "once_cell",
  "openssl",
@@ -112,9 +112,9 @@ dependencies = [
 
 [[package]]
 name = "actix-http"
-version = "3.5.1"
+version = "3.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "129d4c88e98860e1758c5de288d1632b07970a16d59bdf7b8d66053d582bb71f"
+checksum = "d223b13fd481fc0d1f83bb12659ae774d9e3601814c68a0bc539731698cca743"
 dependencies = [
  "actix-codec",
  "actix-rt",
@@ -236,9 +236,9 @@ dependencies = [
 
 [[package]]
 name = "actix-tls"
-version = "3.2.0"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "929e47cc23865cdb856e59673cfba2d28f00b3bbd060dfc80e33a00a3cea8317"
+checksum = "d4cce60a2f2b477bc72e5cde0af1812a6e82d8fd85b5570a5dcf2a5bf2c5be5f"
 dependencies = [
  "actix-rt",
  "actix-service",
@@ -265,9 +265,9 @@ dependencies = [
 
 [[package]]
 name = "actix-web"
-version = "4.4.1"
+version = "4.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e43428f3bf11dee6d166b00ec2df4e3aa8cc1606aaa0b7433c146852e2f4e03b"
+checksum = "43a6556ddebb638c2358714d853257ed226ece6023ef9364f23f0c70737ea984"
 dependencies = [
  "actix-codec",
  "actix-http",
@@ -851,9 +851,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.32"
+version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41daef31d7a747c5c847246f36de49ced6f7403b4cdabc807a97b5cc184cda7a"
+checksum = "5bc015644b92d5890fab7489e49d21f879d5c990186827d42ec511919404f38b"
 dependencies = [
  "android-tzdata",
  "iana-time-zone",
@@ -1564,9 +1564,9 @@ checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
 
 [[package]]
 name = "dyn-clone"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "545b22097d44f8a9581187cdf93de7a71e4722bf51200cfaba810865b49a495d"
+checksum = "0d6ef0072f8a535281e4876be788938b528e9a1d43900b82c2569af7da799125"
 
 [[package]]
 name = "either"
@@ -2026,7 +2026,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http",
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "slab",
  "tokio",
  "tokio-util",
@@ -2401,9 +2401,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.1.0"
+version = "2.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+checksum = "7b0b929d511467233429c45a44ac1dcaa21ba0f5ba11e4879e6ed28ddb4f9df4"
 dependencies = [
  "equivalent",
  "hashbrown 0.14.3",
@@ -2465,9 +2465,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.12.0"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
 dependencies = [
  "either",
 ]
@@ -2578,7 +2578,6 @@ dependencies = [
  "activitypub_federation",
  "actix-web",
  "anyhow",
- "async-trait",
  "chrono",
  "encoding",
  "enum-map",
@@ -2649,7 +2648,7 @@ dependencies = [
  "html2md",
  "html2text",
  "http",
- "itertools 0.12.0",
+ "itertools 0.12.1",
  "lemmy_api_common",
  "lemmy_db_schema",
  "lemmy_db_views",
@@ -2884,7 +2883,7 @@ dependencies = [
  "futures",
  "html2text",
  "http",
- "itertools 0.12.0",
+ "itertools 0.12.1",
  "lettre",
  "markdown-it",
  "once_cell",
@@ -3236,9 +3235,9 @@ dependencies = [
 
 [[package]]
 name = "moka"
-version = "0.12.4"
+version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad9dc9808102655926a6086abd0b9965ebefd4a39ef0d184f074c34ba5049ec6"
+checksum = "b1911e88d5831f748a4097a43862d129e3c6fca831eecac9b8db6d01d93c9de2"
 dependencies = [
  "async-lock",
  "async-trait",
@@ -3380,9 +3379,9 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "openssl"
-version = "0.10.63"
+version = "0.10.64"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15c9d69dd87a29568d4d017cfe8ec518706046a05184e5aea92d0af890b803c8"
+checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
 dependencies = [
  "bitflags 2.4.2",
  "cfg-if",
@@ -3412,9 +3411,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.99"
+version = "0.9.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e1bf214306098e4832460f797824c05d25aacdf896f64a985fb0fd992454ae"
+checksum = "dda2b0f344e78efc2facf7d195d098df0dd72151b26ab98da807afc26c198dff"
 dependencies = [
  "cc",
  "libc",
@@ -3457,7 +3456,7 @@ checksum = "1e32339a5dc40459130b3bd269e9892439f55b33e772d2a9d402a789baaf4e8a"
 dependencies = [
  "futures-core",
  "futures-sink",
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "js-sys",
  "once_cell",
  "pin-project-lite",
@@ -3854,7 +3853,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5699cc8a63d1aa2b1ee8e12b9ad70ac790d65788cd36101fa37f87ea46c4cef"
 dependencies = [
  "base64 0.21.7",
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "line-wrap",
  "quick-xml 0.31.0",
  "serde",
@@ -4308,9 +4307,9 @@ checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
 [[package]]
 name = "reqwest"
-version = "0.11.23"
+version = "0.11.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37b1ae8d9ac08420c66222fb9096fc5de435c3c48542bc5336c51892cffafb41"
+checksum = "c6920094eb85afde5e4a138be3f2de8bbdf28000f0029e72c45025a56b042251"
 dependencies = [
  "async-compression",
  "base64 0.21.7",
@@ -4338,6 +4337,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
+ "sync_wrapper",
  "system-configuration",
  "tokio",
  "tokio-native-tls",
@@ -4690,9 +4690,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.195"
+version = "1.0.197"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63261df402c67811e9ac6def069e4786148c4563f4b50fd4bf30aa370d626b02"
+checksum = "3fb1c873e1b9b056a4dc4c0c198b24c3ffa059243875552b2bd0933b1aee4ce2"
 dependencies = [
  "serde_derive",
 ]
@@ -4708,9 +4708,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.195"
+version = "1.0.197"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46fe8f8603d81ba86327b23a2e9cdf49e1255fb94a4c5f297f6ee0547178ea2c"
+checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4719,11 +4719,11 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.111"
+version = "1.0.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "176e46fa42316f18edd598015a5166857fc835ec732f5215eac6b7bdbf0a84f4"
+checksum = "c5f09b1bd632ef549eaa9f60a1f8de742bdbc698e6cee2095fc84dde5f549ae0"
 dependencies = [
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "itoa",
  "ryu",
  "serde",
@@ -4769,7 +4769,7 @@ dependencies = [
  "chrono",
  "hex",
  "indexmap 1.9.3",
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "serde",
  "serde_json",
  "serde_with_macros",
@@ -5204,18 +5204,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.56"
+version = "1.0.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d54378c645627613241d077a3a79db965db602882668f9136ac42af9ecb730ad"
+checksum = "1e45bcbe8ed29775f228095caf2cd67af7a4ccf756ebff23a306bf3e8b47b24b"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.56"
+version = "1.0.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa0faa943b50f3db30a20aa7e265dbc66076993efed8463e8de414e5d06d3471"
+checksum = "a953cb265bef375dae3de6663da4d3804eee9682ea80d8e2542529b73c531c81"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -5284,9 +5284,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.35.1"
+version = "1.36.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c89b4efa943be685f629b149f53829423f8f5531ea21249408e8e2f8671ec104"
+checksum = "61285f6515fa018fb2d1e46eb21223fff441ee8db5d0f1435e8ab4f5cdb80931"
 dependencies = [
  "backtrace",
  "bytes",
@@ -5467,7 +5467,7 @@ version = "0.19.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b5bb770da30e5cbfde35a2d7b9b8a2c4b8ef89548a7a6aeab5c9a576e3e7421"
 dependencies = [
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -5480,7 +5480,7 @@ version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d34d383cd00a163b4a5b85053df514d45bc330f6de7737edfe0a93311d1eaa03"
 dependencies = [
- "indexmap 2.1.0",
+ "indexmap 2.2.5",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -6068,9 +6068,9 @@ checksum = "4d91413b1c31d7539ba5ef2451af3f0b833a005eb27a631cec32bc0635a8602b"
 
 [[package]]
 name = "wasm-streams"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4609d447824375f43e1ffbc051b50ad8f4b3ae8219680c94452ea05eb240ac7"
+checksum = "b65dc4c90b63b118468cf747d8bf3566c1913ef60be765b5730ead9e0a3ba129"
 dependencies = [
  "futures-util",
  "js-sys",

Cargo.toml

@@ -96,7 +96,7 @@ lemmy_routes = { version = "=0.19.3", path = "./crates/routes" }
 lemmy_db_views = { version = "=0.19.3", path = "./crates/db_views" }
 lemmy_db_views_actor = { version = "=0.19.3", path = "./crates/db_views_actor" }
 lemmy_db_views_moderator = { version = "=0.19.3", path = "./crates/db_views_moderator" }
-activitypub_federation = { version = "0.5.1-beta.1", default-features = false, features = [
+activitypub_federation = { version = "0.5.1", default-features = false, features = [
   "actix-web",
 ] }
 diesel = "2.1.4"

crates/api_common/Cargo.toml

@@ -54,7 +54,6 @@ tracing = { workspace = true, optional = true }
 reqwest-middleware = { workspace = true, optional = true }
 regex = { workspace = true }
 rosetta-i18n = { workspace = true, optional = true }
-anyhow = { workspace = true }
 futures = { workspace = true, optional = true }
 uuid = { workspace = true, optional = true }
 tokio = { workspace = true, optional = true }
@@ -64,7 +63,6 @@ once_cell = { workspace = true, optional = true }
 actix-web = { workspace = true, optional = true }
 enum-map = { workspace = true }
 urlencoding = { workspace = true }
-async-trait = { workspace = true }
 mime = { version = "0.3.17", optional = true }
 webpage = { version = "1.6", default-features = false, features = [
   "serde",
@@ -73,7 +71,6 @@ encoding = { version = "0.2.33", optional = true }
 jsonwebtoken = { version = "8.3.0", optional = true }
 # necessary for wasmt compilation
 getrandom = { version = "0.2.12", features = ["js"] }
-task-local-extensions = "0.1.4"
 
 [package.metadata.cargo-machete]
 ignored = ["getrandom"]

crates/api_common/src/context.rs

@@ -1,6 +1,5 @@
 use crate::request::client_builder;
 use activitypub_federation::config::{Data, FederationConfig};
-use anyhow::anyhow;
 use lemmy_db_schema::{
   source::secret::Secret,
   utils::{build_db_pool_for_tests, ActualDbPool, DbPool},
@@ -9,10 +8,8 @@ use lemmy_utils::{
   rate_limit::RateLimitCell,
   settings::{structs::Settings, SETTINGS},
 };
-use reqwest::{Request, Response};
+use reqwest_middleware::{ClientBuilder, ClientWithMiddleware};
-use reqwest_middleware::{ClientBuilder, ClientWithMiddleware, Middleware, Next};
 use std::sync::Arc;
-use task_local_extensions::Extensions;
 
 #[derive(Clone)]
 pub struct LemmyContext {
@@ -55,32 +52,16 @@ impl LemmyContext {
     &self.rate_limit_cell
   }
 
-  /// Initialize a context for use in tests, optionally blocks network requests.
+  /// Initialize a context for use in tests which blocks federation network calls.
   ///
   /// Do not use this in production code.
   pub async fn init_test_context() -> Data<LemmyContext> {
-    Self::build_test_context(true).await
-  }
-
-  /// Initialize a context for use in tests, with network requests allowed.
-  /// TODO: get rid of this if possible.
-  ///
-  /// Do not use this in production code.
-  pub async fn init_test_context_with_networking() -> Data<LemmyContext> {
-    Self::build_test_context(false).await
-  }
-
-  async fn build_test_context(block_networking: bool) -> Data<LemmyContext> {
     // call this to run migrations
     let pool = build_db_pool_for_tests().await;
 
     let client = client_builder(&SETTINGS).build().expect("build client");
 
-    let mut client = ClientBuilder::new(client);
+    let client = ClientBuilder::new(client).build();
-    if block_networking {
-      client = client.with(BlockedMiddleware);
-    }
-    let client = client.build();
     let secret = Secret {
       id: 0,
       jwt_secret: String::new(),
@@ -92,24 +73,11 @@ impl LemmyContext {
     let config = FederationConfig::builder()
       .domain(context.settings().hostname.clone())
       .app_data(context)
+      // Dont allow any network fetches
+      .http_fetch_limit(0)
       .build()
       .await
       .expect("build federation config");
     config.to_request_data()
   }
 }
-
-struct BlockedMiddleware;
-
-/// A reqwest middleware which blocks all requests
-#[async_trait::async_trait]
-impl Middleware for BlockedMiddleware {
-  async fn handle(
-    &self,
-    _req: Request,
-    _extensions: &mut Extensions,
-    _next: Next<'_>,
-  ) -> reqwest_middleware::Result<Response> {
-    Err(anyhow!("Network requests not allowed").into())
-  }
-}

crates/api_common/src/request.rs

@@ -327,7 +327,7 @@ mod tests {
   #[tokio::test]
   #[serial]
   async fn test_link_metadata() {
-    let context = LemmyContext::init_test_context_with_networking().await;
+    let context = LemmyContext::init_test_context().await;
     let sample_url = Url::parse("https://gitlab.com/IzzyOnDroid/repo/-/wikis/FAQ").unwrap();
     let sample_res = fetch_link_metadata(&sample_url, false, &context)
       .await

crates/apub/assets/mastodon/objects/page.json

@@ -11,21 +11,21 @@
       "votersCount": "toot:votersCount"
     }
   ],
-  "id": "https://dice.camp/users/thekernelinyellow/statuses/110830743680706519",
+  "id": "https://masto.qa.urbanwildlife.biz/users/mastodon/statuses/110830743680706519",
   "type": "Note",
   "summary": null,
   "inReplyTo": null,
   "published": "2023-08-04T09:55:39Z",
-  "url": "https://dice.camp/@thekernelinyellow/110830743680706519",
+  "url": "https://masto.qa.urbanwildlife.biz/110830743680706519",
-  "attributedTo": "https://dice.camp/users/thekernelinyellow",
+  "attributedTo": "https://masto.qa.urbanwildlife.biz/users/mastodon",
   "to": ["https://www.w3.org/ns/activitystreams#Public"],
   "cc": [
-    "https://dice.camp/users/thekernelinyellow/followers",
+    "https://masto.qa.urbanwildlife.biz/users/mastodon/followers",
     "https://enterprise.lemmy.ml/c/tenforward",
     "https://enterprise.lemmy.ml/c/tenforward/followers"
   ],
   "sensitive": false,
-  "atomUri": "https://dice.camp/users/thekernelinyellow/statuses/110830743680706519",
+  "atomUri": "https://masto.qa.urbanwildlife.biz/statuses/110830743680706519",
   "inReplyToAtomUri": null,
   "conversation": "tag:dice.camp,2023-08-04:objectId=29969291:objectType=Conversation",
   "content": "<p><span class=\"h-card\" translate=\"no\"><a href=\"https://enterprise.lemmy.ml/c/tenforward\" class=\"u-url mention\">@<span>tenforward</span></a></span> Variable never resetting at refresh</p><p>Hi! I&#39;m using a variable to count elements in my generator but every time I generate a new character, the counter&#39;s value carries on from the previous one. Is there a function to reset it (I set it to 0 at the beginning of the file)</p>",
@@ -41,12 +41,12 @@
     }
   ],
   "replies": {
-    "id": "https://dice.camp/users/thekernelinyellow/statuses/110830743680706519/replies",
+    "id": "https://masto.qa.urbanwildlife.biz/users/mastodon/statuses/110830743680706519/replies",
     "type": "Collection",
     "first": {
       "type": "CollectionPage",
-      "next": "https://dice.camp/users/thekernelinyellow/statuses/110830743680706519/replies?only_other_accounts=true&page=true",
+      "next": "https://masto.qa.urbanwildlife.biz/users/mastodon/statuses/110830743680706519/replies?only_other_accounts=true&page=true",
-      "partOf": "https://dice.camp/users/thekernelinyellow/statuses/110830743680706519/replies",
+      "partOf": "https://masto.qa.urbanwildlife.biz/users/mastodon/statuses/110830743680706519/replies",
       "items": []
     }
   }

crates/apub/src/objects/post.rs

@@ -302,8 +302,7 @@ mod tests {
   use super::*;
   use crate::{
     objects::{
-      community::{tests::parse_lemmy_community, ApubCommunity},
+      community::tests::parse_lemmy_community,
-      instance::ApubSite,
       person::{tests::parse_lemmy_person, ApubPerson},
     },
     protocol::tests::file_to_json_object,
@@ -333,7 +332,10 @@ mod tests {
     assert!(!post.featured_community);
     assert_eq!(context.request_count(), 0);
 
-    cleanup(&context, person, site, community, post).await?;
+    Post::delete(&mut context.pool(), post.id).await?;
+    Person::delete(&mut context.pool(), person.id).await?;
+    Community::delete(&mut context.pool(), community.id).await?;
+    Site::delete(&mut context.pool(), site.id).await?;
     Ok(())
   }
 
@@ -341,29 +343,19 @@ mod tests {
   #[serial]
   async fn test_convert_mastodon_post_title() -> LemmyResult<()> {
     let context = LemmyContext::init_test_context().await;
-    let (person, site) = parse_lemmy_person(&context).await?;
     let community = parse_lemmy_community(&context).await?;
 
+    let json = file_to_json_object("assets/mastodon/objects/person.json")?;
+    let person = ApubPerson::from_json(json, &context).await?;
+
     let json = file_to_json_object("assets/mastodon/objects/page.json")?;
     let post = ApubPost::from_json(json, &context).await?;
 
     assert_eq!(post.name, "Variable never resetting at refresh");
 
-    cleanup(&context, person, site, community, post).await?;
-    Ok(())
-  }
-
-  async fn cleanup(
-    context: &Data<LemmyContext>,
-    person: ApubPerson,
-    site: ApubSite,
-    community: ApubCommunity,
-    post: ApubPost,
-  ) -> LemmyResult<()> {
     Post::delete(&mut context.pool(), post.id).await?;
     Person::delete(&mut context.pool(), person.id).await?;
     Community::delete(&mut context.pool(), community.id).await?;
-    Site::delete(&mut context.pool(), site.id).await?;
     Ok(())
   }
 }

crates/routes/src/webfinger.rs

@@ -1,6 +1,6 @@
 use activitypub_federation::{
   config::Data,
-  fetch::webfinger::{extract_webfinger_name, Webfinger, WebfingerLink},
+  fetch::webfinger::{extract_webfinger_name, Webfinger, WebfingerLink, WEBFINGER_CONTENT_TYPE},
 };
 use actix_web::{web, web::Query, HttpResponse};
 use lemmy_api_common::context::LemmyContext;
@@ -70,7 +70,11 @@ async fn get_webfinger_response(
     ..Default::default()
   };
 
-  Ok(HttpResponse::Ok().json(json))
+  Ok(
+    HttpResponse::Ok()
+      .content_type(&WEBFINGER_CONTENT_TYPE)
+      .json(json),
+  )
 }
 
 fn webfinger_link_for_actor(