109 lines
3.1 KiB
Rust
109 lines
3.1 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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//! Simple Content Handler
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use hyper::{header, server, Decoder, Encoder, Next};
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use hyper::net::HttpStream;
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use hyper::mime::Mime;
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use hyper::status::StatusCode;
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use util::version;
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use handlers::add_security_headers;
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#[derive(Clone)]
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pub struct ContentHandler {
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code: StatusCode,
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content: String,
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mimetype: Mime,
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write_pos: usize,
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safe_to_embed_on: Option<(String, u16)>,
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}
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impl ContentHandler {
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pub fn ok(content: String, mimetype: Mime) -> Self {
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Self::new(StatusCode::Ok, content, mimetype)
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}
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pub fn not_found(content: String, mimetype: Mime) -> Self {
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Self::new(StatusCode::NotFound, content, mimetype)
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}
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pub fn html(code: StatusCode, content: String, embeddable_on: Option<(String, u16)>) -> Self {
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Self::new_embeddable(code, content, mime!(Text/Html), embeddable_on)
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}
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pub fn error(code: StatusCode, title: &str, message: &str, details: Option<&str>, embeddable_on: Option<(String, u16)>) -> Self {
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Self::html(code, format!(
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include_str!("../error_tpl.html"),
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title=title,
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message=message,
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details=details.unwrap_or_else(|| ""),
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version=version(),
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), embeddable_on)
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}
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pub fn new(code: StatusCode, content: String, mimetype: Mime) -> Self {
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Self::new_embeddable(code, content, mimetype, None)
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}
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pub fn new_embeddable(code: StatusCode, content: String, mimetype: Mime, embeddable_on: Option<(String, u16)>) -> Self {
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ContentHandler {
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code: code,
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content: content,
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mimetype: mimetype,
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write_pos: 0,
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safe_to_embed_on: embeddable_on,
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}
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}
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}
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impl server::Handler<HttpStream> for ContentHandler {
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fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
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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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res.set_status(self.code);
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res.headers_mut().set(header::ContentType(self.mimetype.clone()));
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add_security_headers(&mut res.headers_mut(), self.safe_to_embed_on.clone());
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Next::write()
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}
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fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
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let bytes = self.content.as_bytes();
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if self.write_pos == bytes.len() {
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return Next::end();
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}
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match encoder.write(&bytes[self.write_pos..]) {
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Ok(bytes) => {
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self.write_pos += bytes;
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Next::write()
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},
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Err(e) => match e.kind() {
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::std::io::ErrorKind::WouldBlock => Next::write(),
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_ => Next::end()
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},
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}
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}
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}
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