add actor handler

Cargo.lock

@@ -180,6 +180,7 @@ dependencies = [
  "regex",
  "rocket",
  "serde",
+ "serde_json",
 ]
 
 [[package]]

Cargo.toml

@@ -10,3 +10,4 @@ lazy_static = "1.4.0"
 regex = "1.8.3"
 rocket = { version = "=0.5.0-rc.3", features = ["json"] }
 serde = { version = "1.0.163", features = ["derive"] }
+serde_json = "1.0.96"

src/apub.rs

@@ -0,0 +1,3 @@
+pub mod actor;
+
+pub use actor::Actor;

src/apub/actor.rs

@@ -0,0 +1,29 @@
+use serde::{Serialize, Deserialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct Actor {
+  pub context: Vec<String>,
+  pub id: String,
+  #[serde(rename = "type")]
+  pub type_: String,
+  pub preferred_username: String,
+  pub inbox: String,
+  pub outbox: String,
+  pub public_key: PublicKey,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct PublicKey {
+  pub id: String,
+  pub owner: String,
+  pub public_key_pem: String,
+}
+
+impl Actor {
+  pub fn default_context() -> Vec<String> {
+    vec![
+      "https://www.w3.org/ns/activitystreams".to_owned(),
+      "https://w3id.org/security/v1".to_owned(),
+    ]
+  }
+}

src/ctx.rs

@@ -1,8 +1,11 @@
+pub mod config;
 pub mod db;
 pub mod user;
 
+pub use config::Config;
 pub use db::DB;
 
 pub struct Ctx {
+  pub cfg: Config,
   pub db: Box<dyn DB>,
 }

src/ctx/config.rs

@@ -0,0 +1,34 @@
+use serde::{Serialize, Deserialize};
+
+#[derive(Serialize, Deserialize)]
+pub struct Config {
+  pub proto: String,
+  pub domain: String,
+  pub basepath: String,
+}
+
+impl Config {
+  pub fn default() -> Config {
+    Config {
+      proto: "https".to_owned(),
+      domain: "localhost".to_owned(),
+      basepath: "".to_owned(),
+    }
+  }
+  pub fn load(path: &str) -> Result<Config, String> {
+    match std::fs::read_to_string(path) {
+      Ok(text) => match serde_json::from_str(&text) {
+        Ok(cfg) => Ok(cfg),
+        Err(e) => Err(format!("{}", e)),
+      },
+      Err(e) => Err(format!("{}", e)),
+    }
+  }
+
+  pub fn get_baseurl(&self) -> String {
+    let mut p =
+        format!("{}://{}/{}", self.proto, self.domain, self.basepath);
+    while p.ends_with("/") { p.pop(); }
+    return p;
+  }
+}

src/ctx/db.rs

@@ -5,26 +5,16 @@ pub trait DB : Send + Sync {
   fn delete(&self, d: &user::Id) -> Result<(), String>;
   fn exists(&self, d: &user::Id) -> Result<bool, String>;
 
-  fn get_profile(&self, id: &user::Id) -> Result<user::Profile, String>;
-  fn set_profile(&self, id: &user::Id, d: user::Profile) -> Result<user::Profile, String>;
+  fn get_profile(&self, id: &user::Id) -> Result<user::Profile, ReadError>;
+  fn set_profile(&self, id: &user::Id, d: user::Profile) -> Result<user::Profile, WriteError>;
 }
 
-pub struct Null;
-impl DB for Null {
-  fn new(&self, d: &user::Id) -> Result<(), String> {
-    Err("not implemented".to_owned())
-  }
-  fn delete(&self, d: &user::Id) -> Result<(), String> {
-    Err("not implemented".to_owned())
-  }
-  fn exists(&self, d: &user::Id) -> Result<bool, String> {
-    Err("not implemented".to_owned())
-  }
-
-  fn get_profile(&self, id: &user::Id) -> Result<user::Profile, String> {
-    Err("not implemented".to_owned())
-  }
-  fn set_profile(&self, id: &user::Id, d: user::Profile) -> Result<user::Profile, String> {
-    Err("not implemented".to_owned())
-  }
+pub enum ReadError {
+  Missing,
+  Internal(String),
+}
+pub enum WriteError {
+  Missing,
+  Violation,
+  Internal(String),
 }

src/ctx/user.rs

@@ -1,30 +1,18 @@
 use lazy_static::lazy_static;
 use regex::Regex;
 
-pub struct Data {
-  id: Id,
-  profile: Option<Profile>,
-}
 pub struct Id {
-  name: String,
-  host: Option<String>,
+  pub name: String,
+  pub host: Option<String>,
 }
 pub struct Profile {
-  name: String,
-}
-
-
-impl Data {
-  fn get_profile(&self) -> Result<Profile, String> {
-    Err("not implemented".to_owned())
-  }
-  fn set_profile(&self, d: &Profile) -> Result<(), String> {
-    Err("not implemented".to_owned())
-  }
+  pub name: String,
+  pub private: bool,
 }
 
 // hello@world.com -> Id {hello, world.com}
-pub fn parse_id(v: &str) -> Result<Id, String> {
+impl Id {
+  pub fn parse(v: &str) -> Result<Id, String> {
     lazy_static! {
       static ref RE: Regex =  Regex::new(r"^([A-Za-z0-9_]+)(?:@([A-Za-z0-9\-\.]+))?$").unwrap();
     }
@@ -35,8 +23,11 @@ pub fn parse_id(v: &str) -> Result<Id, String> {
       }),
       None => Err("invalid idstr".to_owned()),
     }
-}
-impl Id {
+  }
+  pub fn local(name: &str) -> Id {
+    Id {name: name.to_owned(), host: None}
+  }
+
   fn to_string(&self, default_host: &str) -> String {
     format!("{}@{}", self.name, self.host.as_deref().unwrap_or(default_host))
   }

src/handler.rs

@@ -1 +1,2 @@
+pub mod actor;
 pub mod webfinger;

src/handler/actor.rs

@@ -0,0 +1,47 @@
+use rocket::{get, Responder, State};
+use rocket::serde::json::Json;
+
+use crate::apub;
+use crate::ctx::db;
+use crate::ctx::user;
+
+use crate::ctx::Ctx;
+
+#[derive(Responder)]
+pub enum Response {
+  #[response(status = 200, content_type = "json")]
+  Found(Json<apub::Actor>),
+
+  #[response(status = 404)]
+  Missing(String),
+
+  #[response(status = 500)]
+  InternalError(String),
+}
+
+#[get("/<name>")]
+pub fn main(ctx: &State<Ctx>, name: &str) -> Response {
+  match ctx.db.get_profile(&user::Id::local(name)) {
+    Ok(profile) => Response::Found(Json(new(ctx, name, &profile))),
+    Err(db::ReadError::Missing) => Response::Missing(format!("unknown actor: {}", name)),
+    Err(db::ReadError::Internal(msg)) =>
+        Response::InternalError(format!("internal error: {}", msg)),
+  }
+}
+
+fn new(ctx: &Ctx, id: &str, p: &user::Profile) -> apub::Actor {
+  let idurl = format!("{}/{}", ctx.cfg.get_baseurl(), id);
+  apub::Actor {
+    context: apub::Actor::default_context(),
+    id     : idurl.clone(),
+    type_  : "Person".to_owned(),
+    preferred_username: id.to_owned(),
+    inbox  : format!("{}/inbox", idurl),
+    outbox : format!("{}/outbox", idurl),
+    public_key: apub::actor::PublicKey {
+      id: format!("{}#main-key", idurl),
+      owner: idurl,
+      public_key_pem: "".to_owned(),
+    },
+  }
+}

src/handler/webfinger.rs

@@ -9,10 +9,19 @@ use crate::ctx::Ctx;
 pub struct WebFinger {
   subject: String,
   aliases: Vec<String>,
+  links: Vec<Link>,
+}
+
+#[derive(Serialize)]
+pub struct Link {
+  rel: String,
+  #[serde(rename(serialize = "type"))]
+  type_: String,
+  href: String,
 }
 
 #[derive(Responder)]
-pub enum WebFingerResponse {
+pub enum Response {
   #[response(status = 200, content_type = "json")]
   Found(Json<WebFinger>),
 
@@ -27,22 +36,29 @@ pub enum WebFingerResponse {
 }
 
 #[get("/?<resource>")]
-pub fn main(ctx: &State<Ctx>, resource: &str) -> WebFingerResponse {
+pub fn main(ctx: &State<Ctx>, resource: &str) -> Response {
   match parse_resource(&resource) {
-    Ok(("acct", idstr)) | Ok(("", idstr)) => match ctx::user::parse_id(idstr) {
+    Ok(("acct", idstr)) | Ok(("", idstr)) => match ctx::user::Id::parse(idstr) {
       Ok(id) => match ctx.db.exists(&id) {
-        Ok(true) => WebFingerResponse::Found(Json(WebFinger {
+        Ok(true) => Response::Found(Json(WebFinger {
           subject: resource.to_owned(),
           aliases: vec![resource.to_owned()],
+          links: vec![
+            Link {
+              rel: "self".to_owned(),
+              type_: "application/activity+json".to_owned(),
+              href: format!("{}/{}", ctx.cfg.get_baseurl(), id.name),
+            },
+          ],
         })),
 
-        Ok(false) => WebFingerResponse::Missing(format!("unknown resource: {}", resource)),
-        Err(msg) => WebFingerResponse::InternalError(format!("error: {}", msg))
+        Ok(false) => Response::Missing(format!("unknown resource: {}", resource)),
+        Err(msg) => Response::InternalError(format!("error: {}", msg))
       }
-      Err(msg) => WebFingerResponse::ParseError(format!("error: {}", msg)),
+      Err(msg) => Response::ParseError(format!("error: {}", msg)),
     },
-    Ok((kind, _)) => WebFingerResponse::ParseError(format!("error: unknown kind, {}", kind)),
-    Err(msg) => WebFingerResponse::ParseError(format!("error: {}", msg)),
+    Ok((kind, _)) => Response::ParseError(format!("error: unknown kind, {}", kind)),
+    Err(msg) => Response::ParseError(format!("error: {}", msg)),
   }
 }
 

src/main.rs

@@ -1,16 +1,45 @@
+mod apub;
 mod ctx;
 mod handler;
 
 use rocket;
 
+use ctx::db;
+use ctx::user;
 use ctx::Ctx;
+use ctx::Config;
 
 #[rocket::launch]
 fn launch() -> _ {
   let ctx = Ctx {
-    db: Box::new(ctx::db::Null {}),
+    cfg: Config::load("fadaway.json").unwrap_or(Config::default()),
+    db : Box::new(FakeDB {}),
   };
   rocket::build().
       manage(ctx).
-      mount("/.well-known/webfinger", rocket::routes![handler::webfinger::main])
+      mount("/.well-known/webfinger", rocket::routes![handler::webfinger::main]).
+      mount("/", rocket::routes![handler::actor::main])
+}
+
+pub struct FakeDB;
+impl ctx::DB for FakeDB {
+  fn new(&self, d: &user::Id) -> Result<(), String> {
+    Err("not implemented".to_owned())
+  }
+  fn delete(&self, d: &user::Id) -> Result<(), String> {
+    Err("not implemented".to_owned())
+  }
+  fn exists(&self, d: &user::Id) -> Result<bool, String> {
+    Ok(true)
+  }
+
+  fn get_profile(&self, id: &user::Id) -> Result<user::Profile, db::ReadError> {
+    Ok(user::Profile {
+      name: id.name.to_owned(),
+      private: true,
+    })
+  }
+  fn set_profile(&self, id: &user::Id, d: user::Profile) -> Result<user::Profile, db::WriteError> {
+    Err(db::WriteError::Internal("not implemented".to_owned()))
+  }
 }