Implement webmention support (fixes #1395) (#1671)

* Implement webmention support (fixes #1395)

* update

* use post url instead of instance or, better error handling

* update webmention

Cargo.lock

@@ -307,6 +307,12 @@ version = "1.0.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28ae2b3dec75a406790005a200b1bd89785afc02517a00ca99ecfe093ee9e6cf"
 
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
 [[package]]
 name = "async-mutex"
 version = "1.4.0"
@@ -467,6 +473,21 @@ dependencies = [
  "getrandom 0.2.3",
 ]
 
+[[package]]
+name = "bit-set"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e11e16035ea35e4e5997b393eacbf6f63983188f7a2ad25bfb13465f5ad59de"
+dependencies = [
+ "bit-vec",
+]
+
+[[package]]
+name = "bit-vec"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -1328,12 +1349,26 @@ checksum = "c213fa6a618dc1da552f54f85cba74b05d8e883c92ec4e89067736938084c26e"
 dependencies = [
  "log",
  "mac",
- "markup5ever",
+ "markup5ever 0.7.5",
  "proc-macro2 0.4.30",
  "quote 0.6.13",
  "syn 0.15.44",
 ]
 
+[[package]]
+name = "html5ever"
+version = "0.25.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aafcf38a1a36118242d29b92e1b08ef84e67e4a5ed06e0a80be20e6a32bfed6b"
+dependencies = [
+ "log",
+ "mac",
+ "markup5ever 0.10.1",
+ "proc-macro2 1.0.28",
+ "quote 1.0.9",
+ "syn 1.0.75",
+]
+
 [[package]]
 name = "http"
 version = "0.2.4"
@@ -1682,6 +1717,7 @@ dependencies = [
  "tokio",
  "url",
  "uuid",
+ "webmention",
 ]
 
 [[package]]
@@ -1974,6 +2010,19 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec",
+ "bitflags",
+ "cfg-if",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.100"
@@ -2046,16 +2095,42 @@ version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "897636f9850c3eef4905a5540683ed53dc9393860f0846cab2c2ddf9939862ff"
 dependencies = [
- "phf",
+ "phf 0.7.24",
- "phf_codegen",
+ "phf_codegen 0.7.24",
  "serde",
  "serde_derive",
  "serde_json",
- "string_cache",
+ "string_cache 0.7.5",
- "string_cache_codegen",
+ "string_cache_codegen 0.4.4",
  "tendril",
 ]
 
+[[package]]
+name = "markup5ever"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a24f40fb03852d1cdd84330cddcaf98e9ec08a7b7768e952fad3b4cf048ec8fd"
+dependencies = [
+ "log",
+ "phf 0.8.0",
+ "phf_codegen 0.8.0",
+ "string_cache 0.8.1",
+ "string_cache_codegen 0.5.1",
+ "tendril",
+]
+
+[[package]]
+name = "markup5ever_rcdom"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f015da43bcd8d4f144559a3423f4591d69b8ce0652c905374da7205df336ae2b"
+dependencies = [
+ "html5ever 0.25.1",
+ "markup5ever 0.10.1",
+ "tendril",
+ "xml5ever",
+]
+
 [[package]]
 name = "match_cfg"
 version = "0.1.0"
@@ -2183,6 +2258,7 @@ checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
 dependencies = [
  "bitvec",
  "funty",
+ "lexical-core",
  "memchr",
  "version_check",
 ]
@@ -2406,7 +2482,16 @@ version = "0.7.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3da44b85f8e8dfaec21adae67f95d93244b2ecf6ad2a692320598dcc8e6dd18"
 dependencies = [
- "phf_shared",
+ "phf_shared 0.7.24",
+]
+
+[[package]]
+name = "phf"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3dfb61232e34fcb633f43d12c58f83c1df82962dcdfa565a4e866ffc17dafe12"
+dependencies = [
+ "phf_shared 0.8.0",
 ]
 
 [[package]]
@@ -2415,8 +2500,18 @@ version = "0.7.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b03e85129e324ad4166b06b2c7491ae27fe3ec353af72e72cd1654c7225d517e"
 dependencies = [
- "phf_generator",
+ "phf_generator 0.7.24",
- "phf_shared",
+ "phf_shared 0.7.24",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbffee61585b0411840d3ece935cce9cb6321f01c45477d30066498cd5e1a815"
+dependencies = [
+ "phf_generator 0.8.0",
+ "phf_shared 0.8.0",
 ]
 
 [[package]]
@@ -2425,17 +2520,36 @@ version = "0.7.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09364cc93c159b8b06b1f4dd8a4398984503483891b0c26b867cf431fb132662"
 dependencies = [
- "phf_shared",
+ "phf_shared 0.7.24",
  "rand 0.6.5",
 ]
 
+[[package]]
+name = "phf_generator"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17367f0cc86f2d25802b2c26ee58a7b23faeccf78a396094c13dced0d0182526"
+dependencies = [
+ "phf_shared 0.8.0",
+ "rand 0.7.3",
+]
+
 [[package]]
 name = "phf_shared"
 version = "0.7.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "234f71a15de2288bcb7e3b6515828d22af7ec8598ee6d24c3b526fa0a80b67a0"
 dependencies = [
- "siphasher",
+ "siphasher 0.2.3",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c00cf8b9eafe68dde5e9eaa2cef8ee84a9336a47d566ec55ca16589633b65af7"
+dependencies = [
+ "siphasher 0.3.7",
 ]
 
 [[package]]
@@ -2604,7 +2718,7 @@ dependencies = [
  "rand_isaac",
  "rand_jitter",
  "rand_os",
- "rand_pcg",
+ "rand_pcg 0.1.2",
  "rand_xorshift",
  "winapi",
 ]
@@ -2620,6 +2734,7 @@ dependencies = [
  "rand_chacha 0.2.2",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
+ "rand_pcg 0.2.1",
 ]
 
 [[package]]
@@ -2768,6 +2883,15 @@ dependencies = [
  "rand_core 0.4.2",
 ]
 
+[[package]]
+name = "rand_pcg"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16abd0c1b639e9eb4d7c50c0b8100b0d0f849be2349829c740fe8e6eb4816429"
+dependencies = [
+ "rand_core 0.5.1",
+]
+
 [[package]]
 name = "rand_xorshift"
 version = "0.1.1"
@@ -3023,6 +3147,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "select"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ee061f90afcc8678bef7a78d0d121683f0ba753f740ff7005f833ec445876b7"
+dependencies = [
+ "bit-set",
+ "html5ever 0.25.1",
+ "markup5ever_rcdom",
+]
+
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -3221,6 +3356,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
 
+[[package]]
+name = "siphasher"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "533494a8f9b724d33625ab53c6c4800f7cc445895924a8ef649222dcb76e938b"
+
 [[package]]
 name = "slab"
 version = "0.4.4"
@@ -3269,6 +3410,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "static_assertions"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
+
 [[package]]
 name = "stdweb"
 version = "0.4.20"
@@ -3326,26 +3473,51 @@ checksum = "89c058a82f9fd69b1becf8c274f412281038877c553182f1d02eb027045a2d67"
 dependencies = [
  "lazy_static",
  "new_debug_unreachable",
- "phf_shared",
+ "phf_shared 0.7.24",
  "precomputed-hash",
  "serde",
- "string_cache_codegen",
+ "string_cache_codegen 0.4.4",
  "string_cache_shared",
 ]
 
+[[package]]
+name = "string_cache"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ddb1139b5353f96e429e1a5e19fbaf663bddedaa06d1dbd49f82e352601209a"
+dependencies = [
+ "lazy_static",
+ "new_debug_unreachable",
+ "phf_shared 0.8.0",
+ "precomputed-hash",
+ "serde",
+]
+
 [[package]]
 name = "string_cache_codegen"
 version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0f45ed1b65bf9a4bf2f7b7dc59212d1926e9eaf00fa998988e420fd124467c6"
 dependencies = [
- "phf_generator",
+ "phf_generator 0.7.24",
- "phf_shared",
+ "phf_shared 0.7.24",
  "proc-macro2 1.0.28",
  "quote 1.0.9",
  "string_cache_shared",
 ]
 
+[[package]]
+name = "string_cache_codegen"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f24c8e5e19d22a726626f1a5e16fe15b132dcf21d10177fa5a45ce7962996b97"
+dependencies = [
+ "phf_generator 0.8.0",
+ "phf_shared 0.8.0",
+ "proc-macro2 1.0.28",
+ "quote 1.0.9",
+]
+
 [[package]]
 name = "string_cache_shared"
 version = "0.3.0"
@@ -3879,13 +4051,28 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "webmention"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31c1f9ad3af9421b7e94faef6f884d32bd60b6ea00ff05d84df74392a89c2b9f"
+dependencies = [
+ "anyhow",
+ "nom",
+ "reqwest",
+ "select",
+ "serde",
+ "thiserror",
+ "url",
+]
+
 [[package]]
 name = "webpage"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1adf8232428a373fe9dc80dc3b7ba15c35621746691869ae2aa4fe0bb6f01098"
 dependencies = [
- "html5ever",
+ "html5ever 0.22.5",
  "serde",
  "serde_json",
 ]
@@ -3966,3 +4153,15 @@ name = "xdg"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d089681aa106a86fade1b0128fb5daf07d5867a509ab036d99988dec80429a57"
+
+[[package]]
+name = "xml5ever"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b1b52e6e8614d4a58b8e70cf51ec0cc21b256ad8206708bcff8139b5bbd6a59"
+dependencies = [
+ "log",
+ "mac",
+ "markup5ever 0.10.1",
+ "time 0.1.44",
+]

crates/api_crud/Cargo.toml

@@ -44,3 +44,4 @@ anyhow = "1.0.43"
 thiserror = "1.0.26"
 background-jobs = "0.9.0"
 reqwest = { version = "0.11.4", features = ["json"] }
+webmention = "0.4.0"

crates/api_crud/src/post/create.rs

@@ -27,6 +27,8 @@ use lemmy_utils::{
   LemmyError,
 };
 use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
+use log::warn;
+use webmention::{Webmention, WebmentionError};
 
 #[async_trait::async_trait(?Send)]
 impl PerformCrud for CreatePost {
@@ -125,6 +127,19 @@ impl PerformCrud for CreatePost {
     // Mark the post as read
     mark_post_as_read(person_id, post_id, context.pool()).await?;
 
+    if let Some(url) = &updated_post.url {
+      let mut webmention = Webmention::new(
+        updated_post.ap_id.clone().into_inner(),
+        url.clone().into_inner(),
+      )?;
+      webmention.set_checked(true);
+      match webmention.send().await {
+        Ok(_) => {}
+        Err(WebmentionError::NoEndpointDiscovered(_)) => {}
+        Err(e) => warn!("Failed to send webmention: {}", e),
+      }
+    }
+
     let object = PostOrComment::Post(Box::new(updated_post));
     Vote::send(
       &object,