109 lines
3.1 KiB
Rust
109 lines
3.1 KiB
Rust
// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity 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.
|
|
|
|
// Parity 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.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Simple Content Handler
|
|
|
|
use hyper::{header, server, Decoder, Encoder, Next};
|
|
use hyper::net::HttpStream;
|
|
use hyper::mime::Mime;
|
|
use hyper::status::StatusCode;
|
|
|
|
use util::version;
|
|
|
|
use handlers::add_security_headers;
|
|
|
|
#[derive(Clone)]
|
|
pub struct ContentHandler {
|
|
code: StatusCode,
|
|
content: String,
|
|
mimetype: Mime,
|
|
write_pos: usize,
|
|
safe_to_embed_on: Option<(String, u16)>,
|
|
}
|
|
|
|
impl ContentHandler {
|
|
pub fn ok(content: String, mimetype: Mime) -> Self {
|
|
Self::new(StatusCode::Ok, content, mimetype)
|
|
}
|
|
|
|
pub fn not_found(content: String, mimetype: Mime) -> Self {
|
|
Self::new(StatusCode::NotFound, content, mimetype)
|
|
}
|
|
|
|
pub fn html(code: StatusCode, content: String, embeddable_on: Option<(String, u16)>) -> Self {
|
|
Self::new_embeddable(code, content, mime!(Text/Html), embeddable_on)
|
|
}
|
|
|
|
pub fn error(code: StatusCode, title: &str, message: &str, details: Option<&str>, embeddable_on: Option<(String, u16)>) -> Self {
|
|
Self::html(code, format!(
|
|
include_str!("../error_tpl.html"),
|
|
title=title,
|
|
message=message,
|
|
details=details.unwrap_or_else(|| ""),
|
|
version=version(),
|
|
), embeddable_on)
|
|
}
|
|
|
|
pub fn new(code: StatusCode, content: String, mimetype: Mime) -> Self {
|
|
Self::new_embeddable(code, content, mimetype, None)
|
|
}
|
|
|
|
pub fn new_embeddable(code: StatusCode, content: String, mimetype: Mime, embeddable_on: Option<(String, u16)>) -> Self {
|
|
ContentHandler {
|
|
code: code,
|
|
content: content,
|
|
mimetype: mimetype,
|
|
write_pos: 0,
|
|
safe_to_embed_on: embeddable_on,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl server::Handler<HttpStream> for ContentHandler {
|
|
fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
|
|
Next::write()
|
|
}
|
|
|
|
fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
|
|
Next::write()
|
|
}
|
|
|
|
fn on_response(&mut self, res: &mut server::Response) -> Next {
|
|
res.set_status(self.code);
|
|
res.headers_mut().set(header::ContentType(self.mimetype.clone()));
|
|
add_security_headers(&mut res.headers_mut(), self.safe_to_embed_on.clone());
|
|
Next::write()
|
|
}
|
|
|
|
fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
|
|
let bytes = self.content.as_bytes();
|
|
if self.write_pos == bytes.len() {
|
|
return Next::end();
|
|
}
|
|
|
|
match encoder.write(&bytes[self.write_pos..]) {
|
|
Ok(bytes) => {
|
|
self.write_pos += bytes;
|
|
Next::write()
|
|
},
|
|
Err(e) => match e.kind() {
|
|
::std::io::ErrorKind::WouldBlock => Next::write(),
|
|
_ => Next::end()
|
|
},
|
|
}
|
|
}
|
|
}
|