From f739f6729b2791b8fdd3aea63a0c9d55cf47add8 Mon Sep 17 00:00:00 2001 From: asonix Date: Mon, 28 Jan 2019 14:16:51 -0600 Subject: [PATCH] Add documentation --- LICENSE | 674 +++++++++++++++++++++++++++++++++++++++++++++++++++++ README.md | 100 ++++++++ src/lib.rs | 284 +++++++++++++++++++++- 3 files changed, 1056 insertions(+), 2 deletions(-) create mode 100644 LICENSE diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md index 55afe02..59e7a02 100644 --- a/README.md +++ b/README.md @@ -1 +1,101 @@ # Actix Webfinger +A library to aid in resolving and providing webfinger objects with the Actix Web web framework. + +The main functionality this crate provides is through the `Webfinger::fetch` method for Actix +Web-based clients, and the `Resolver` trait for Actix Web-based servers. + +### Usage +First, add Actix Webfinger as a dependency + +```toml +[dependencies] +actix = "0.7" +actix-web = "0.7" +actix-webfinger = "0.1" +``` + +Then use it in your application + +#### Client Example +```rust +use actix::{Actor, System}; +use actix_web::client::ClientConnector; +use actix_webfinger::Webfinger; +use futures::Future; +use openssl::ssl::{SslConnector, SslMethod}; + +fn main() { + let sys = System::new("asonix"); + + let ssl_conn = SslConnector::builder(SslMethod::tls()).unwrap().build(); + let conn = ClientConnector::with_connector(ssl_conn).start(); + + let fut = Webfinger::fetch(conn, "asonix@asonix.dog", "localhost:8000", false) + .map(move |w: Webfinger| { + println!("asonix's webfinger:\n{:#?}", w); + + System::current().stop(); + }) + .map_err(|e| eprintln!("Error: {}", e)); + + actix::spawn(fut); + + let _ = sys.run(); +} +``` + +#### Server Example +```rust +use actix_web::server; +use actix_webfinger::{Resolver, Webfinger}; +use futures::{future::IntoFuture, Future}; + +#[derive(Clone, Debug)] +pub struct MyState { + domain: String, +} + +pub struct MyResolver; + +impl Resolver for MyResolver { + type Error = actix_web::error::JsonPayloadError; + + fn find( + account: &str, + domain: &str, + state: &MyState, + ) -> Box, Error = Self::Error>> { + let w = if domain == state.domain { + Some(Webfinger::new(&format!("{}@{}", account, domain))) + } else { + None + }; + + Box::new(Ok(w).into_future()) + } +} + +fn main() { + server::new(|| { + actix_webfinger::app::(MyState { + domain: "asonix.dog".to_owned(), + }) + }) + .bind("127.0.0.1:8000") + .unwrap() + .run(); +} +``` + +### Contributing +Feel free to open issues for anything you find an issue with. Please note that any contributed code will be licensed under the GPLv3. + +### License + +Copyright © 2019 Riley Trautman + +Actix Webfinger is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. + +Actix Webfinger is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This file is part of Tokio ZMQ. + +You should have received a copy of the GNU General Public License along with Actix Webfinger. If not, see [http://www.gnu.org/licenses/](http://www.gnu.org/licenses/). diff --git a/src/lib.rs b/src/lib.rs index e6fd78f..6ca8def 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,3 +1,104 @@ +//! # Actix Webfinger +//! A library to aid in resolving and providing webfinger objects with the Actix Web web framework. +//! +//! The main functionality this crate provides is through the `Webfinger::fetch` method for Actix +//! Web-based clients, and the `Resolver` trait for Actix Web-based servers. +//! +//! ### Usage +//! First, add Actix Webfinger as a dependency +//! +//! ```toml +//! [dependencies] +//! actix = "0.7" +//! actix-web = "0.7" +//! actix-webfinger = "0.1" +//! ``` +//! +//! Then use it in your application +//! +//! #### Client Example +//! ```rust,ignore +//! use actix::{Actor, System}; +//! use actix_web::client::ClientConnector; +//! use actix_webfinger::Webfinger; +//! use futures::Future; +//! use openssl::ssl::{SslConnector, SslMethod}; +//! +//! fn main() { +//! let sys = System::new("asonix"); +//! +//! let ssl_conn = SslConnector::builder(SslMethod::tls()).unwrap().build(); +//! let conn = ClientConnector::with_connector(ssl_conn).start(); +//! +//! let fut = Webfinger::fetch(conn, "asonix@asonix.dog", "localhost:8000", false) +//! .map(move |w: Webfinger| { +//! println!("asonix's webfinger:\n{:#?}", w); +//! +//! System::current().stop(); +//! }) +//! .map_err(|e| eprintln!("Error: {}", e)); +//! +//! actix::spawn(fut); +//! +//! let _ = sys.run(); +//! } +//! ``` +//! +//! #### Server Example +//! ```rust,ignore +//! use actix_web::server; +//! use actix_webfinger::{Resolver, Webfinger}; +//! use futures::{future::IntoFuture, Future}; +//! +//! #[derive(Clone, Debug)] +//! pub struct MyState { +//! domain: String, +//! } +//! +//! pub struct MyResolver; +//! +//! impl Resolver for MyResolver { +//! type Error = actix_web::error::JsonPayloadError; +//! +//! fn find( +//! account: &str, +//! domain: &str, +//! state: &MyState, +//! ) -> Box, Error = Self::Error>> { +//! let w = if domain == state.domain { +//! Some(Webfinger::new(&format!("{}@{}", account, domain))) +//! } else { +//! None +//! }; +//! +//! Box::new(Ok(w).into_future()) +//! } +//! } +//! +//! fn main() { +//! server::new(|| { +//! actix_webfinger::app::(MyState { +//! domain: "asonix.dog".to_owned(), +//! }) +//! }) +//! .bind("127.0.0.1:8000") +//! .unwrap() +//! .run(); +//! } +//! ``` +//! +//! ### Contributing +//! Feel free to open issues for anything you find an issue with. Please note that any contributed code will be licensed under the GPLv3. +//! +//! ### License +//! +//! Copyright © 2019 Riley Trautman +//! +//! Actix Webfinger is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. +//! +//! Actix Webfinger is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. This file is part of Tokio ZMQ. +//! +//! You should have received a copy of the GNU General Public License along with Actix Webfinger. If not, see [http://www.gnu.org/licenses/](http://www.gnu.org/licenses/). use actix::Addr; use actix_web::{ client::{self, ClientConnector}, @@ -10,6 +111,29 @@ use failure::Fail; use futures::{future::IntoFuture, Future}; use serde_derive::{Deserialize, Serialize}; +/// A predicate for Actix Web route filters +/// +/// This predicate matches GET requests with valid Accept headers. A valid Accept header is any +/// Accept headers that matches a superset of `application/jrd+json`. +/// +/// Valid Accept Headers +/// - `application/jrd+json' +/// - `application/json` +/// - `application/*` +/// - `*/*` +/// +/// ```rust,ignore +/// use actix_web::App; +/// use actix_webfinger::WebfingerPredicate; +/// +/// let app = App::new() +/// .resource("/.well-known/webfinger", |r| { +/// r.route() +/// .filter(WebfingerPredicate) +/// .with(your_route_handler) +/// }) +/// .finish(); +/// ``` pub struct WebfingerPredicate; impl Predicate for WebfingerPredicate { @@ -36,6 +160,18 @@ impl Predicate for WebfingerPredicate { } } +/// A simple way to mount the webfinger app to your Actix Web application +/// +/// ```rust,ignore +/// use actix_web::server; +/// use actix_webfinger::app; +/// +/// server::new(|| { +/// app::<_, MyResolver>(my_state) +/// }) +/// .bind("127.0.0.1:8000")? +/// .run(); +/// ``` pub fn app(state: S) -> App where R: Resolver + 'static, @@ -46,14 +182,45 @@ where }) } +/// The error created if the webfinger resource query is malformed +/// +/// Resource queries should have a valid `username@instance` format. +/// +/// The following resource formats will not produce errors +/// - `acct:asonix@asonix.dog` +/// - `acct:@asonix@asonix.dog` +/// - `asonix@asonix.dog` +/// - `@asonix@asonix.dog` +/// +/// The following resource formats will produce errors +/// - `@asonix` +/// - `asonix` +/// +/// This error type captures the invalid string for inspection #[derive(Clone, Debug, Fail)] #[fail(display = "Resource {} is invalid", _0)] pub struct InvalidResource(String); +/// A type representing a valid resource query +/// +/// Resource queries should have a valid `username@instance` format. +/// +/// The following resource formats will not produce errors +/// - `acct:asonix@asonix.dog` +/// - `acct:@asonix@asonix.dog` +/// - `asonix@asonix.dog` +/// - `@asonix@asonix.dog` +/// +/// The following resource formats will produce errors +/// - `@asonix` +/// - `asonix` +/// +/// This type implements `FromStr` and `serde::de::Deserialize` so it can be used to enforce valid +/// formatting before the request reaches the route handler. #[derive(Clone, Debug)] pub struct WebfingerResource { - account: String, - domain: String, + pub account: String, + pub domain: String, } impl std::str::FromStr for WebfingerResource { @@ -86,11 +253,72 @@ impl<'de> serde::de::Deserialize<'de> for WebfingerResource { } } +/// A wrapper type for a Webfinger Resource +/// +/// This type is used to deserialize from queries like the following: +/// - `resource=acct:asonix@asonix.dog` +/// +/// This can be used in Actix Web with the following code: +/// +/// ```rust,ignore +/// use actix_web::Query; +/// use actix_webfinger::{WebfingerQuery, WebfingerResource}; +/// +/// fn my_route(query: Query) -> String { +/// let WebfingerResource { +/// account, +/// domain, +/// } = query.into_inner().resource; +/// +/// // do things +/// String::from("got resource") +/// } +/// ``` #[derive(Clone, Debug, Deserialize)] pub struct WebfingerQuery { resource: WebfingerResource, } +/// A trait to ease the implementation of Webfinger Resolvers +/// +/// This trait can be implemented, and the provided `endpoint` method used to serve requests to an +/// Actix Web server. +/// +/// ```rust,ignore +/// use actix_webfinger::{Resolver, Webfinger}; +/// use futures::{Future, future::IntoFuture}; +/// +/// struct MyResolver; +/// +/// impl Resolver for MyResolver { +/// type Error = CustomError; +/// +/// fn find( +/// account: &str, +/// domain: &str, +/// _state: S +/// ) -> Box, Error = Self::Error>> { +/// let webfinger = Webfinger::new(&format!("{}@{}", account, domain)); +/// +/// // do something +/// +/// let f = Ok(Some(webfinger)).into_future(); +/// +/// Box::new(f) +/// } +/// } +/// +/// fn main() { +/// server::new(|| { +/// App::new() +/// .resource("/.well-known/webfinger", |r| { +/// r.with(>::endpoint) +/// }) +/// }) +/// .bind("127.0.0.1:8000")? +/// .run(); +/// } +/// ``` pub trait Resolver { type Error: ResponseError; @@ -112,6 +340,14 @@ pub trait Resolver { } } +/// The webfinger Link type +/// +/// All links have a `rel` the determines what the link is describing, most have a `type` that adds +/// some more context, and a `href` to point to, or contain the data. +/// +/// In some cases, the Link can have a `rel` and a `template` and nothing else. +/// +/// This type can be serialized and deserialized #[derive(Clone, Debug, Deserialize, Serialize)] pub struct Link { pub rel: String, @@ -120,11 +356,26 @@ pub struct Link { #[serde(skip_serializing_if = "Option::is_none")] pub template: Option, + /// renamed to `type` via serde #[serde(rename = "type")] #[serde(skip_serializing_if = "Option::is_none")] pub kind: Option, } +/// The webfinger type +/// +/// Webfinger data has three parts +/// - aliases +/// - links +/// - subject +/// +/// `subject` defines the name or primary identifier of the object being looked up. +/// `aliases` are alternate names for the object. +/// `links` are references to more information about the subject, and can be in a variety of +/// formats. For example, some links will reference activitypub person objects, and others will +/// contain public key data. +/// +/// This type can be serialized and deserialized #[derive(Clone, Debug, Deserialize, Serialize)] pub struct Webfinger { pub aliases: Vec, @@ -133,6 +384,7 @@ pub struct Webfinger { } impl Webfinger { + /// Create a new Webfinger with the given subject pub fn new(subject: &str) -> Self { Webfinger { aliases: Vec::new(), @@ -141,29 +393,41 @@ impl Webfinger { } } + /// Add multiple aliases to the Webfinger pub fn add_aliases(&mut self, aliases: &[String]) -> &mut Self { self.aliases.extend_from_slice(aliases); self } + /// Add a single alias to the Webfinger pub fn add_alias(&mut self, alias: &str) -> &mut Self { self.aliases.push(alias.to_owned()); self } + /// Get the aliases for this Webfinger pub fn aliases(&self) -> &[String] { &self.aliases } + /// Add multiple Links to this Webfinger + pub fn add_links(&mut self, links: &[Link]) -> &mut Self { + self.links.extend_from_slice(links); + self + } + + /// Add single Link to this Webfinger pub fn add_link(&mut self, link: Link) -> &mut Self { self.links.push(link); self } + /// Get the Links from this Webfinger pub fn links(&self) -> &[Link] { &self.links } + /// Add an Activitypub link to this Webfinger pub fn add_activitypub(&mut self, href: &str) -> &mut Self { self.links.push(Link { rel: "self".to_owned(), @@ -174,6 +438,7 @@ impl Webfinger { self } + /// Get an Activitypub link from this Webfinger pub fn activitypub(&self) -> Option<&Link> { self.links.iter().find(|l| { l.rel == "self" @@ -184,6 +449,7 @@ impl Webfinger { }) } + /// Add a profile link to this Webfinger pub fn add_profile(&mut self, href: &str) -> &mut Self { self.links.push(Link { rel: "http://webfinger.net/rel/profile-page".to_owned(), @@ -194,12 +460,14 @@ impl Webfinger { self } + /// Get a profile link from this Webfinger pub fn profile(&self) -> Option<&Link> { self.links .iter() .find(|l| l.rel == "http://webfinger.net/rel/profile-page") } + /// Add an atom link to this Webfinger pub fn add_atom(&mut self, href: &str) -> &mut Self { self.links.push(Link { rel: "http://schemas.google.com/g/2010#updates-from".to_owned(), @@ -210,12 +478,14 @@ impl Webfinger { self } + /// Get an atom link from this Webfinger pub fn atom(&self) -> Option<&Link> { self.links .iter() .find(|l| l.rel == "http://schemas.google.com/g/2010#updates-from") } + /// Set a salmon link from this Webfinger pub fn set_salmon(&mut self, href: &str) -> &mut Self { self.links.push(Link { rel: "salmon".to_owned(), @@ -226,10 +496,12 @@ impl Webfinger { self } + /// Get a salmon link from this Webfinger pub fn salmon(&self) -> Option<&Link> { self.links.iter().find(|l| l.rel == "salmon") } + /// Set a magic public key link for this Webfinger pub fn set_magic_public_key(&mut self, magic_public_key: &str) -> &mut Self { self.links.push(Link { rel: "magic-public-key".to_owned(), @@ -243,10 +515,12 @@ impl Webfinger { self } + /// Get a magic public key link from this Webfinger pub fn magic_public_key(&self) -> Option<&Link> { self.links.iter().find(|l| l.rel == "magic-public-key") } + /// Set an ostatus link for this Webfinger pub fn set_ostatus(&mut self, template: &str) -> &mut Self { self.links.push(Link { rel: "http://ostatus.org/schema/1.0/subscribe".to_owned(), @@ -257,18 +531,24 @@ impl Webfinger { self } + /// Get an ostatus link from this Webfinger pub fn ostatus(&self) -> Option<&Link> { self.links .iter() .find(|l| l.rel == "http://ostatus.org/schema/1.0/subscribe") } + /// Turn this Webfinger into an actix web HttpResponse pub fn respond(self) -> HttpResponse { HttpResponse::Ok() .content_type("application/jrd+json") .json(self) } + /// Fetch a webfinger with subject `user` from a given `domain` + /// + /// This method takes an `Addr` so derivative works can provide their own SSL + /// connector implemenation (currently with OpenSSL or Rustls) pub fn fetch( conn: Addr, user: &str,