polaris-mirror/src/api.rs
2017-07-03 16:15:54 -07:00

389 lines
11 KiB
Rust

use diesel::prelude::*;
use iron::prelude::*;
use iron::headers::{Authorization, Basic};
use iron::{AroundMiddleware, Handler, status};
use mount::Mount;
use router::Router;
use params;
use secure_session::middleware::{SessionMiddleware, SessionConfig};
use secure_session::session::{SessionManager, ChaCha20Poly1305SessionManager};
use serde_json;
use std::fs;
use std::io;
use std::path::*;
use std::ops::Deref;
use std::sync::Arc;
use typemap;
use url::percent_encoding::percent_decode;
use config;
use config::MiscSettings;
use db::{ConnectionSource, DB};
use db::misc_settings;
use errors::*;
use thumbnails::*;
use index;
use user;
use utils::*;
use vfs::VFSSource;
const CURRENT_MAJOR_VERSION: i32 = 2;
const CURRENT_MINOR_VERSION: i32 = 1;
#[derive(Deserialize, Serialize)]
struct Session {
username: String,
}
struct SessionKey {}
impl typemap::Key for SessionKey {
type Value = Session;
}
fn get_auth_secret<T>(db: &T) -> Result<String>
where T: ConnectionSource
{
use self::misc_settings::dsl::*;
let connection = db.get_connection();
let connection = connection.lock().unwrap();
let connection = connection.deref();
let misc: MiscSettings = misc_settings.get_result(connection)?;
Ok(misc.auth_secret.to_owned())
}
pub fn get_handler(db: Arc<DB>) -> Result<Chain> {
let api_handler = get_endpoints(db.clone());
let mut api_chain = Chain::new(api_handler);
let auth_secret = get_auth_secret(db.deref())?;
let session_manager =
ChaCha20Poly1305SessionManager::<Session>::from_password(auth_secret.as_bytes());
let session_config = SessionConfig::default();
let session_middleware =
SessionMiddleware::<Session,
SessionKey,
ChaCha20Poly1305SessionManager<Session>>::new(session_manager,
session_config);
api_chain.link_around(session_middleware);
Ok(api_chain)
}
fn get_endpoints(db: Arc<DB>) -> Mount {
let mut api_handler = Mount::new();
{
api_handler.mount("/version/", self::version);
{
let db = db.clone();
api_handler.mount("/auth/",
move |request: &mut Request| self::auth(request, db.deref()));
}
{
let db = db.clone();
api_handler.mount("/initial_setup/", move |request: &mut Request| {
self::initial_setup(request, db.deref())
});
}
}
{
let mut auth_api_mount = Mount::new();
{
let db = db.clone();
auth_api_mount.mount("/browse/",
move |request: &mut Request| self::browse(request, db.deref()));
}
{
let db = db.clone();
auth_api_mount.mount("/flatten/",
move |request: &mut Request| self::flatten(request, db.deref()));
}
{
let db = db.clone();
auth_api_mount.mount("/random/",
move |request: &mut Request| self::random(request, db.deref()));
}
{
let db = db.clone();
auth_api_mount.mount("/recent/",
move |request: &mut Request| self::recent(request, db.deref()));
}
{
let db = db.clone();
auth_api_mount.mount("/serve/",
move |request: &mut Request| self::serve(request, db.deref()));
}
{
let mut settings_router = Router::new();
let get_db = db.clone();
let put_db = db.clone();
settings_router.get("/",
move |request: &mut Request| {
self::get_config(request, get_db.deref())
},
"get_settings");
settings_router.put("/",
move |request: &mut Request| {
self::put_config(request, put_db.deref())
},
"put_config");
auth_api_mount.mount("/settings/", settings_router);
}
let mut auth_api_chain = Chain::new(auth_api_mount);
let auth = AuthRequirement { db: db.clone() };
auth_api_chain.link_around(auth);
api_handler.mount("/", auth_api_chain);
}
api_handler
}
fn path_from_request(request: &Request) -> Result<PathBuf> {
let path_string = request
.url
.path()
.join(&::std::path::MAIN_SEPARATOR.to_string());
let decoded_path = percent_decode(path_string.as_bytes()).decode_utf8()?;
Ok(PathBuf::from(decoded_path.deref()))
}
struct AuthRequirement {
db: Arc<DB>,
}
impl AroundMiddleware for AuthRequirement {
fn around(self, handler: Box<Handler>) -> Box<Handler> {
Box::new(AuthHandler {
db: self.db,
handler: handler,
}) as Box<Handler>
}
}
struct AuthHandler {
handler: Box<Handler>,
db: Arc<DB>,
}
impl Handler for AuthHandler {
fn handle(&self, req: &mut Request) -> IronResult<Response> {
{
let mut auth_success = false;
// Skip auth for first time setup
if user::count(self.db.deref())? == 0 {
auth_success = true;
}
// Auth via Authorization header
if !auth_success {
if let Some(auth) = req.headers.get::<Authorization<Basic>>() {
if let Some(ref password) = auth.password {
auth_success =
user::auth(self.db.deref(), auth.username.as_str(), password.as_str())?;
req.extensions
.insert::<SessionKey>(Session { username: auth.username.clone() });
}
}
}
// Auth via Session
if !auth_success {
auth_success = req.extensions.get::<SessionKey>().is_some();
}
// Reject
if !auth_success {
return Err(Error::from(ErrorKind::AuthenticationRequired).into());
}
}
self.handler.handle(req)
}
}
fn version(_: &mut Request) -> IronResult<Response> {
#[derive(Serialize)]
struct Version {
major: i32,
minor: i32,
}
let current_version = Version {
major: CURRENT_MAJOR_VERSION,
minor: CURRENT_MINOR_VERSION,
};
match serde_json::to_string(&current_version) {
Ok(result_json) => Ok(Response::with((status::Ok, result_json))),
Err(e) => Err(IronError::new(e, status::InternalServerError)),
}
}
fn initial_setup(_: &mut Request, db: &DB) -> IronResult<Response> {
#[derive(Serialize)]
struct InitialSetup {
has_any_users: bool,
};
let initial_setup = InitialSetup {
has_any_users: user::count(db)? > 0,
};
match serde_json::to_string(&initial_setup) {
Ok(result_json) => Ok(Response::with((status::Ok, result_json))),
Err(e) => Err(IronError::new(e, status::InternalServerError)),
}
}
fn auth(request: &mut Request, db: &DB) -> IronResult<Response> {
let username;
let password;
{
let input = request.get_ref::<params::Params>().unwrap();
username = match input.find(&["username"]) {
Some(&params::Value::String(ref username)) => username.clone(),
_ => return Err(Error::from(ErrorKind::MissingUsername).into()),
};
password = match input.find(&["password"]) {
Some(&params::Value::String(ref password)) => password.clone(),
_ => return Err(Error::from(ErrorKind::MissingPassword).into()),
};
}
if user::auth(db, username.as_str(), password.as_str())? {
request
.extensions
.insert::<SessionKey>(Session { username: username.clone() });
Ok(Response::with((status::Ok, "")))
} else {
Err(Error::from(ErrorKind::IncorrectCredentials).into())
}
}
fn browse(request: &mut Request, db: &DB) -> IronResult<Response> {
let path = path_from_request(request);
let path = match path {
Err(e) => return Err(IronError::new(e, status::BadRequest)),
Ok(p) => p,
};
let browse_result = index::browse(db, &path)?;
let result_json = serde_json::to_string(&browse_result);
let result_json = match result_json {
Ok(j) => j,
Err(e) => return Err(IronError::new(e, status::InternalServerError)),
};
Ok(Response::with((status::Ok, result_json)))
}
fn flatten(request: &mut Request, db: &DB) -> IronResult<Response> {
let path = path_from_request(request);
let path = match path {
Err(e) => return Err(IronError::new(e, status::BadRequest)),
Ok(p) => p,
};
let flatten_result = index::flatten(db, &path)?;
let result_json = serde_json::to_string(&flatten_result);
let result_json = match result_json {
Ok(j) => j,
Err(e) => return Err(IronError::new(e, status::InternalServerError)),
};
Ok(Response::with((status::Ok, result_json)))
}
fn random(_: &mut Request, db: &DB) -> IronResult<Response> {
let random_result = index::get_random_albums(db, 20)?;
let result_json = serde_json::to_string(&random_result);
let result_json = match result_json {
Ok(j) => j,
Err(e) => return Err(IronError::new(e, status::InternalServerError)),
};
Ok(Response::with((status::Ok, result_json)))
}
fn recent(_: &mut Request, db: &DB) -> IronResult<Response> {
let recent_result = index::get_recent_albums(db, 20)?;
let result_json = serde_json::to_string(&recent_result);
let result_json = match result_json {
Ok(j) => j,
Err(e) => return Err(IronError::new(e, status::InternalServerError)),
};
Ok(Response::with((status::Ok, result_json)))
}
fn serve(request: &mut Request, db: &DB) -> IronResult<Response> {
let virtual_path = path_from_request(request);
let virtual_path = match virtual_path {
Err(e) => return Err(IronError::new(e, status::BadRequest)),
Ok(p) => p,
};
let vfs = db.get_vfs()?;
let real_path = vfs.virtual_to_real(&virtual_path);
let real_path = match real_path {
Err(e) => return Err(IronError::new(e, status::NotFound)),
Ok(p) => p,
};
let metadata = match fs::metadata(real_path.as_path()) {
Ok(meta) => meta,
Err(e) => {
let status = match e.kind() {
io::ErrorKind::NotFound => status::NotFound,
io::ErrorKind::PermissionDenied => status::Forbidden,
_ => status::InternalServerError,
};
return Err(IronError::new(e, status));
}
};
if !metadata.is_file() {
return Err(Error::from(ErrorKind::CannotServeDirectory).into());
}
if is_song(real_path.as_path()) {
return Ok(Response::with((status::Ok, real_path)));
}
if is_image(real_path.as_path()) {
return art(request, real_path.as_path());
}
Err(Error::from(ErrorKind::UnsupportedFileType).into())
}
fn art(_: &mut Request, real_path: &Path) -> IronResult<Response> {
let thumb = get_thumbnail(real_path, 400);
match thumb {
Ok(path) => Ok(Response::with((status::Ok, path))),
Err(e) => Err(IronError::from(e)),
}
}
fn get_config(_: &mut Request, db: &DB) -> IronResult<Response> {
let c = config::read(db)?;
let result_json = serde_json::to_string(&c);
let result_json = match result_json {
Ok(j) => j,
Err(e) => return Err(IronError::new(e, status::InternalServerError)),
};
Ok(Response::with((status::Ok, result_json)))
}
fn put_config(request: &mut Request, db: &DB) -> IronResult<Response> {
let input = request.get_ref::<params::Params>().unwrap();
let config = match input.find(&["config"]) {
Some(&params::Value::String(ref config)) => config,
_ => return Err(Error::from(ErrorKind::MissingConfig).into()),
};
let config = config::parse_json(config)?;
config::amend(db, &config)?;
Ok(Response::with(status::Ok))
}