backend: support bridgy webmentions specially

Signed-off-by: Christine Dodrill <me@christine.website>
This commit is contained in:
Cadey Ratio 2020-12-02 14:11:19 -05:00
parent d707243e27
commit 580bca120a
15 changed files with 827 additions and 54 deletions

629
backend/Cargo.lock generated
View File

@ -123,9 +123,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "redox_syscall"
version = "0.1.57"
@ -1845,6 +2240,22 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
[[package]]
name = "scraper"
version = "0.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "48e02aa790c80c2e494130dec6a522033b6a23603ffc06360e9fe6c611ea2c12"
dependencies = [
"cssparser",
"ego-tree",
"getopts",
"html5ever 0.25.1",
"matches",
"selectors",
"smallvec",
"tendril",
]
[[package]]
name = "sct"
version = "0.6.0"
@ -1855,6 +2266,26 @@ dependencies = [
"untrusted",
]
[[package]]
name = "selectors"
version = "0.22.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "df320f1889ac4ba6bc0cdc9c9af7af4bd64bb927bccdf32d81140dc1f9be12fe"
dependencies = [
"bitflags",
"cssparser",
"derive_more",
"fxhash",
"log 0.4.11",
"matches",
"phf 0.8.0",
"phf_codegen 0.8.0",
"precomputed-hash",
"servo_arc",
"smallvec",
"thin-slice",
]
[[package]]
name = "semver"
version = "0.9.0"
@ -1885,9 +2316,9 @@ version = "1.0.116"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f630a6370fd8e457873b4bd2ffdae75408bc291ba72be773772a4c2a065d9ae8"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -1913,6 +2344,16 @@ dependencies = [
"serde",
]
[[package]]
name = "servo_arc"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d98238b800e0d1576d8b6e3de32827c2d74bee68bb97748dcf5071fb53965432"
dependencies = [
"nodrop",
"stable_deref_trait",
]
[[package]]
name = "sha1"
version = "0.6.0"
@ -1940,6 +2381,18 @@ dependencies = [
"lazy_static",
]
[[package]]
name = "siphasher"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
[[package]]
name = "siphasher"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa8f3741c7372e75519bd9346068370c9cdaabcc1f9599cbcf2a2719352286b7"
[[package]]
name = "slab"
version = "0.4.2"
@ -1969,6 +2422,12 @@ version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
[[package]]
name = "stable_deref_trait"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
[[package]]
name = "standback"
version = "0.2.11"
@ -2004,11 +2463,11 @@ version = "0.5.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"serde",
"serde_derive",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -2018,13 +2477,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
dependencies = [
"base-x",
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"serde",
"serde_derive",
"serde_json",
"sha1",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -2033,6 +2492,65 @@ version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
[[package]]
name = "string_cache"
version = "0.7.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "89c058a82f9fd69b1becf8c274f412281038877c553182f1d02eb027045a2d67"
dependencies = [
"lazy_static",
"new_debug_unreachable",
"phf_shared 0.7.24",
"precomputed-hash",
"serde",
"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 0.7.24",
"phf_shared 0.7.24",
"proc-macro2 1.0.24",
"quote 1.0.7",
"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 1.0.24",
"quote 1.0.7",
]
[[package]]
name = "string_cache_shared"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b1884d1bc09741d466d9b14e6d37ac89d6909cbcac41dd9ae982d4d063bbedfc"
[[package]]
name = "subtle"
version = "1.0.0"
@ -2058,11 +2576,11 @@ dependencies = [
[[package]]
name = "syn"
version = "1.0.40"
version = "1.0.53"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "963f7d3cc59b59b9325165add223142bbf1df27655d07789f109896d353d8350"
checksum = "8833e20724c24de12bbaba5ad230ea61c3eafb05b881c7c9d3cfe8638b187e68"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"unicode-xid 0.2.1",
]
@ -2073,12 +2591,29 @@ version = "0.12.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
"unicode-xid 0.2.1",
]
[[package]]
name = "tendril"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "707feda9f2582d5d680d733e38755547a3e8fb471e7ba11452ecfd9ce93a5d3b"
dependencies = [
"futf",
"mac",
"utf-8",
]
[[package]]
name = "thin-slice"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8eaa81235c7058867fa8c0e7314f33dcce9c215f535d1913822a2b3f5e289f3c"
[[package]]
name = "thiserror"
version = "1.0.20"
@ -2094,9 +2629,9 @@ version = "1.0.20"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bd80fc12f73063ac132ac92aceea36734f04a1d93c1240c6944e23a3b8841793"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -2151,10 +2686,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e5c3be1edfad6027c69f5491cf4cb310d1a71ecd6af742788c6ff8bced86b8fa"
dependencies = [
"proc-macro-hack",
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"standback",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -2198,9 +2733,9 @@ version = "0.1.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "80e0ccfc3378da0cce270c946b676a376943f5cd16aeba64568e7939806f4ada"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
]
[[package]]
@ -2356,6 +2891,12 @@ dependencies = [
"tinyvec",
]
[[package]]
name = "unicode-width"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
[[package]]
name = "unicode-xid"
version = "0.1.0"
@ -2428,6 +2969,12 @@ dependencies = [
"percent-encoding 2.1.0",
]
[[package]]
name = "utf-8"
version = "0.7.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "05e42f7c18b8f902290b009cde6d651262f956c98bc51bca4cd1d511c9cd85c7"
[[package]]
name = "vcpkg"
version = "0.2.10"
@ -2488,9 +3035,9 @@ dependencies = [
"bumpalo",
"lazy_static",
"log 0.4.11",
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
"wasm-bindgen-shared",
]
@ -2510,9 +3057,9 @@ version = "0.2.68"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f249f06ef7ee334cc3b8ff031bfc11ec99d00f34d86da7498396dc1e3b1498fe"
dependencies = [
"proc-macro2 1.0.21",
"proc-macro2 1.0.24",
"quote 1.0.7",
"syn 1.0.40",
"syn 1.0.53",
"wasm-bindgen-backend",
"wasm-bindgen-shared",
]

View File

@ -18,11 +18,13 @@ mime = "0.3.0"
paseto = { version = "1.0", features = ["easy_tokens", "v2"] }
prometheus = { version = "0.10", default-features = false, features = ["process"] }
rand = "0"
readability-fork = { version = "0.2", default-features = false }
ring = { version = "^0.16", features = ["std"] }
rocket = "0.4"
rocket_cors = "0.5"
rocket_prometheus = "0.7.0"
rusty_ulid = "0.10"
scraper = "0.12.0"
serde_json = "^1"
serde = { version = "1", features = ["derive"] }
thiserror = "1"

View File

@ -0,0 +1,2 @@
ALTER TABLE webmentions
ADD title TEXT;

View File

@ -90,6 +90,12 @@ pub enum Error {
#[error("can't switch to the same fronter {0}")]
SameFronter(String),
#[error("target doesn't mention source")]
TargetDoesntMentionSource(String),
#[error("readability error: {0}")]
Readability(#[from] readability_fork::error::Error),
}
pub type Result<T = ()> = std::result::Result<T, Error>;

View File

@ -22,6 +22,7 @@ pub struct Item {
pub url: String,
pub title: String,
pub tags: Option<Vec<String>>,
pub content_html: String,
}
impl Item {

View File

@ -1,6 +1,11 @@
use super::{Error, Result};
use crate::{models, paseto, schema, web::discord_webhook::Client as DiscordWebhook, MainDatabase};
use crate::{
models, paseto, schema,
web::{self, discord_webhook::Client as DiscordWebhook},
MainDatabase,
};
use diesel::prelude::*;
use readability_fork::extractor::{self, Product};
use rocket::{
http::Status,
request::Form,
@ -9,12 +14,14 @@ use rocket::{
};
use rocket_contrib::json::Json;
use rusty_ulid::generate_ulid_string;
use serde::Serialize;
use url::Url;
#[derive(FromForm, Debug)]
#[derive(FromForm, Debug, Serialize)]
pub struct WebMention {
source: String,
target: String,
title: Option<String>,
}
impl WebMention {
@ -48,6 +55,28 @@ impl WebMention {
Ok(())
}
fn extract(&self) -> Result<Product> {
let resp = ureq::get(&self.source)
.set("User-Agent", crate::APPLICATION_NAME)
.set("Mi-Mentioned-Url", &self.target)
.call();
if resp.ok() {
let body = resp
.into_string()
.map_err(|why| Error::Web(web::Error::FuturesIO(why)))?;
Ok(extractor::extract(
&mut body.as_bytes(),
&url::Url::parse(&self.source)?,
)?)
} else {
Err(match resp.synthetic_error() {
Some(why) => Error::Web(web::Error::UReq(why.to_string())),
None => Error::Web(web::Error::HttpStatus(resp.status())),
})
}
}
}
impl Into<models::WebMention> for WebMention {
@ -56,6 +85,17 @@ impl Into<models::WebMention> for WebMention {
id: generate_ulid_string(),
source_url: self.source,
target_url: self.target,
title: self.title,
}
}
}
impl Into<WebMention> for models::WebMention {
fn into(self) -> WebMention {
WebMention {
source: self.source_url,
target: self.target_url,
title: self.title,
}
}
}
@ -72,8 +112,24 @@ impl<'a> Responder<'a> for models::WebMention {
}
}
#[get("/webmention/for?<target>")]
#[instrument(skip(conn), err)]
pub fn lookup_target(conn: MainDatabase, target: String) -> Result<Json<Vec<WebMention>>> {
use schema::webmentions::dsl::*;
Ok(Json(
webmentions
.filter(target_url.eq(target))
.load::<models::WebMention>(&*conn)
.map_err(Error::Database)?
.into_iter()
.map(Into::into)
.collect::<Vec<WebMention>>(),
))
}
#[post("/webmention/accept", data = "<mention>")]
#[instrument(skip(conn, mention, dw), err)]
#[instrument(skip(conn, dw), err)]
pub fn accept(
conn: MainDatabase,
mention: Form<WebMention>,
@ -81,13 +137,26 @@ pub fn accept(
) -> Result<models::WebMention> {
use schema::webmentions;
let mention = mention.into_inner();
let mut mention = mention.into_inner();
mention.check()?;
mention
.extract()
.map_err(|why| {
error!(
"error extracting information from {}: {}",
mention.source, why
);
why
})
.iter_mut()
.for_each(|info| mention.title = Some(info.title.clone()));
info!(
source = &mention.source[..],
target = &mention.target[..],
"webmention received"
"webmention received: {:?}",
mention.title,
);
let wm: models::WebMention = mention.into();
@ -96,6 +165,8 @@ pub fn accept(
.execute(&*conn)
.map_err(Error::Database)?;
bridgy_expand(conn, wm.clone())?;
dw.send(format!(
"<{}> mentioned <{}> (<https://mi.within.website/api/webmention/{}>)",
wm.source_url, wm.target_url, wm.id
@ -144,3 +215,41 @@ pub fn list(
.map_err(Error::Database)?,
))
}
pub fn bridgy_expand(conn: MainDatabase, wm: models::WebMention) -> Result {
use crate::web::bridgy::parse;
use schema::webmentions::dsl::*;
if !wm.source_url.contains("https://brid-gy.appspot.com") {
return Ok(());
}
if wm.source_url.contains("like/twitter") {
return Ok(());
}
let resp = ureq::get(&wm.source_url)
.set("User-Agent", crate::APPLICATION_NAME)
.set("Mi-Mentioned-Url", &wm.target_url)
.call();
if resp.ok() {
let body = resp.into_string().unwrap();
let result = parse(&body).unwrap().unwrap();
debug!("{:?}", result);
diesel::update(webmentions.find(wm.id))
.set(&models::UpdateWebMentionSource {
source_url: result.target,
})
.execute(&*conn)
.map_err(Error::Database)
.unwrap();
Ok(())
} else {
Err(match resp.synthetic_error() {
Some(why) => Error::Web(web::Error::UReq(why.to_string())),
None => Error::Web(web::Error::HttpStatus(resp.status())),
})
}
}

View File

@ -0,0 +1,60 @@
#[macro_use]
extern crate tracing;
use color_eyre::eyre::Result;
use diesel::prelude::*;
use mi::{web::bridgy::*, *};
fn main() -> Result<()> {
use schema::webmentions::{dsl::*, table};
color_eyre::install()?;
tracing_subscriber::fmt::init();
info!("{} bridgy migrator starting up", mi::APPLICATION_NAME);
let conn = establish_connection();
table
.load::<models::WebMention>(&conn)?
.into_iter()
.for_each(|wm| {
if !wm.source_url.contains("https://brid-gy.appspot.com") {
return;
}
if wm.source_url.contains("like/twitter") {
return;
}
let resp = ureq::get(&wm.source_url)
.set("User-Agent", crate::APPLICATION_NAME)
.set("Mi-Mentioned-Url", &wm.target_url)
.call();
if resp.ok() {
let body = resp.into_string().unwrap();
let result = parse(&body).unwrap().unwrap();
info!("{:?}", result);
diesel::update(webmentions.find(wm.id))
.set(&models::UpdateWebMentionSource {
source_url: result.target,
})
.execute(&conn)
.unwrap();
} else {
error!(
"can't fetch {}: {}",
wm.source_url,
match resp.synthetic_error() {
Some(why) => web::Error::UReq(why.to_string()),
None => web::Error::HttpStatus(resp.status()),
}
);
}
});
Ok(())
}

View File

@ -30,9 +30,3 @@ fn main() -> Result<()> {
Ok(())
}
pub fn establish_connection() -> SqliteConnection {
let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
SqliteConnection::establish(&database_url)
.expect(&format!("Error connecting to {}", database_url))
}

View File

@ -9,7 +9,7 @@ extern crate rocket_contrib;
#[macro_use]
extern crate tracing;
use diesel::sqlite::SqliteConnection;
use diesel::{prelude::*, SqliteConnection};
pub const APPLICATION_NAME: &str = concat!(
env!("CARGO_PKG_NAME"),
@ -28,3 +28,9 @@ pub mod web;
#[database("main_data")]
pub struct MainDatabase(SqliteConnection);
pub fn establish_connection() -> SqliteConnection {
let database_url = std::env::var("DATABASE_URL").expect("DATABASE_URL must be set");
SqliteConnection::establish(&database_url)
.expect(&format!("Error connecting to {}", database_url))
}

View File

@ -72,6 +72,7 @@ fn main() -> Result<()> {
api::switch::switch,
api::webmention::accept,
api::webmention::get,
api::webmention::lookup_target,
api::webmention::list,
api::get_members,
api::token_info,

View File

@ -51,12 +51,19 @@ pub struct UpdateSwitchTime {
pub ended_at: Option<NaiveDateTime>,
}
#[derive(Queryable, Associations, Insertable, Serialize)]
#[derive(Queryable, Associations, Insertable, Serialize, Clone)]
#[table_name = "webmentions"]
pub struct WebMention {
pub id: String,
pub source_url: String,
pub target_url: String,
pub title: Option<String>,
}
#[derive(AsChangeset)]
#[table_name = "webmentions"]
pub struct UpdateWebMentionSource {
pub source_url: String,
}
#[derive(Queryable, Associations, Insertable)]

View File

@ -27,6 +27,7 @@ table! {
id -> Text,
source_url -> Text,
target_url -> Text,
title -> Nullable<Text>,
}
}

36
backend/src/web/bridgy.rs Normal file
View File

@ -0,0 +1,36 @@
use super::Result;
use scraper::{Html, Selector};
#[derive(Debug)]
pub struct Info {
pub target: String,
pub author: String,
}
pub fn parse(body: &str) -> Result<Option<Info>> {
let doc = Html::parse_document(body);
let target = doc
.select(&Selector::parse(r#"meta[http-equiv="refresh"]"#).unwrap())
.next()
.unwrap()
.value()
.attr("content")
.map(|val| {
let mut val = val.clone().to_string();
val.drain(6..val.len()).collect()
});
let author = doc
.select(&Selector::parse(r#"span[class="p-nickname"]"#).unwrap())
.next()
.unwrap()
.inner_html();
Ok(if target.is_some() {
Some(Info {
target: target.unwrap(),
author: author,
})
} else {
None
})
}

View File

@ -1,3 +1,4 @@
pub mod bridgy;
pub mod discord_webhook;
pub mod mastodon;
pub mod pluralkit;