108 lines
3.0 KiB
Rust
108 lines
3.0 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use std::sync::Arc;
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use std::io::Write;
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use hyper::uri::RequestUri;
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use hyper::server;
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use hyper::header;
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use hyper::status::StatusCode;
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use hyper::net::HttpStream;
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use hyper::{Decoder, Encoder, Next};
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use endpoint::Endpoint;
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use parity_webapp::WebApp;
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pub struct PageEndpoint<T : WebApp + 'static> {
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pub app: Arc<T>,
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}
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impl<T: WebApp + 'static> PageEndpoint<T> {
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pub fn new(app: T) -> Self {
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PageEndpoint {
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app: Arc::new(app)
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}
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}
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}
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impl<T: WebApp> Endpoint for PageEndpoint<T> {
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fn to_handler(&self, prefix: &str) -> Box<server::Handler<HttpStream>> {
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Box::new(PageHandler {
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app: self.app.clone(),
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prefix: prefix.to_owned(),
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prefix_with_slash: prefix.to_owned() + "/",
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path: None,
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write_pos: 0,
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})
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}
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}
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struct PageHandler<T: WebApp + 'static> {
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app: Arc<T>,
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prefix: String,
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prefix_with_slash: String,
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path: Option<String>,
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write_pos: usize,
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}
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impl<T: WebApp + 'static> server::Handler<HttpStream> for PageHandler<T> {
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fn on_request(&mut self, req: server::Request) -> Next {
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if let RequestUri::AbsolutePath(ref path) = *req.uri() {
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// Index file support
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self.path = match path == &self.prefix || path == &self.prefix_with_slash {
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true => Some("index.html".to_owned()),
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false => Some(path[self.prefix_with_slash.len()..].to_owned()),
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};
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}
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Next::write()
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}
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fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
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Next::write()
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}
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fn on_response(&mut self, res: &mut server::Response) -> Next {
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if let Some(f) = self.path.as_ref().and_then(|f| self.app.file(f)) {
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res.set_status(StatusCode::Ok);
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res.headers_mut().set(header::ContentType(f.content_type.parse().unwrap()));
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Next::write()
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} else {
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res.set_status(StatusCode::NotFound);
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Next::write()
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}
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}
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fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
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let (wrote, res) = {
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let file = self.path.as_ref().and_then(|f| self.app.file(f));
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match file {
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None => (None, Next::end()),
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Some(f) if self.write_pos == f.content.len() => (None, Next::end()),
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Some(f) => match encoder.write(&f.content[self.write_pos..]) {
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Ok(bytes) => (Some(bytes), Next::write()),
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Err(e) => match e.kind() {
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::std::io::ErrorKind::WouldBlock => (None, Next::write()),
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_ => (None, Next::end())
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},
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}
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}
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};
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if let Some(bytes) = wrote {
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self.write_pos += bytes;
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}
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res
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}
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}
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