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Much nicer error pages

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This commit is contained in:
Tomasz Drwięga 2016-08-31 16:53:22 +02:00
parent 25e6a4e45f
commit 2789824a51
7 changed files with 108 additions and 40 deletions
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10
dapps/src/apps/fetcher.rs
View File

@ -98,13 +98,11 @@ impl<R: URLHint> AppFetcher<R> {
},
// App is already being fetched
Some(&mut ContentStatus::Fetching(_)) => {
(None, Box::new(ContentHandler::html(
(None, Box::new(ContentHandler::error_with_refresh(
StatusCode::ServiceUnavailable,
format!(
"<html><head>{}</head><body>{}</body></html>",
"<meta http-equiv=\"refresh\" content=\"1\">",
"<h1>This dapp is already being downloaded.</h1><h2>Please wait...</h2>",
)
"Download In Progress",
"This dapp is already being downloaded. Please wait...",
None,
)) as Box<Handler>)
},
// We need to start fetching app

22
dapps/src/error_tpl.html Normal file
View File

@ -0,0 +1,22 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
{meta}
<title>{title}</title>
<link rel="stylesheet" href="/parity-utils/styles.css">
</head>
<body>
<div class="parity-navbar">
</div>
<div class="parity-box">
<h1>{title}</h1>
<h3>{message}</h3>
<p><code>{details}</code></p>
</div>
<div class="parity-status">
{version}
</div>
</body>
</html>

33
dapps/src/handlers/content.rs
View File

@ -21,6 +21,8 @@ use hyper::{header, server, Decoder, Encoder, Next};
use hyper::net::HttpStream;
use hyper::status::StatusCode;
use util::version;
pub struct ContentHandler {
code: StatusCode,
content: String,
@ -38,15 +40,6 @@ impl ContentHandler {
}
}
pub fn forbidden(content: String, mimetype: String) -> Self {
ContentHandler {
code: StatusCode::Forbidden,
content: content,
mimetype: mimetype,
write_pos: 0
}
}
pub fn not_found(content: String, mimetype: String) -> Self {
ContentHandler {
code: StatusCode::NotFound,
@ -60,6 +53,28 @@ impl ContentHandler {
Self::new(code, content, "text/html".into())
}
pub fn error(code: StatusCode, title: &str, message: &str, details: Option<&str>) -> Self {
Self::html(code, format!(
include_str!("../error_tpl.html"),
title=title,
meta="",
message=message,
details=details.unwrap_or_else(|| ""),
version=version(),
))
}
pub fn error_with_refresh(code: StatusCode, title: &str, message: &str, details: Option<&str>) -> Self {
Self::html(code, format!(
include_str!("../error_tpl.html"),
title=title,
meta="<meta http-equiv=\"refresh\" content=\"1\">",
message=message,
details=details.unwrap_or_else(|| ""),
version=version(),
))
}
pub fn new(code: StatusCode, content: String, mimetype: String) -> Self {
ContentHandler {
code: code,

30
dapps/src/handlers/fetch.rs
View File

@ -130,16 +130,20 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
deadline: Instant::now() + Duration::from_secs(FETCH_TIMEOUT),
receiver: receiver,
},
Err(e) => FetchState::Error(ContentHandler::html(
Err(e) => FetchState::Error(ContentHandler::error(
StatusCode::BadGateway,
format!("<h1>Error starting dapp download.</h1><pre>{}</pre>", e),
"Unable To Start Dapp Download",
"Could not initialize download of the dapp. It might be a problem with remote server.",
Some(&format!("{}", e)),
)),
}
},
// or return error
_ => FetchState::Error(ContentHandler::html(
_ => FetchState::Error(ContentHandler::error(
StatusCode::MethodNotAllowed,
"<h1>Only <code>GET</code> requests are allowed.</h1>".into(),
"Method Not Allowed",
"Only <code>GET</code> requests are allowed.",
None,
)),
})
} else { None };
@ -156,9 +160,11 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
// Request may time out
FetchState::InProgress { ref deadline, .. } if *deadline < Instant::now() => {
trace!(target: "dapps", "Fetching dapp failed because of timeout.");
let timeout = ContentHandler::html(
let timeout = ContentHandler::error(
StatusCode::GatewayTimeout,
format!("<h1>Could not fetch app bundle within {} seconds.</h1>", FETCH_TIMEOUT),
"Download Timeout",
&format!("Could not fetch dapp bundle within {} seconds.", FETCH_TIMEOUT),
None
);
Self::close_client(&mut self.client);
(Some(FetchState::Error(timeout)), Next::write())
@ -175,9 +181,11 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
let state = match self.dapp.validate_and_install(path.clone()) {
Err(e) => {
trace!(target: "dapps", "Error while validating dapp: {:?}", e);
FetchState::Error(ContentHandler::html(
FetchState::Error(ContentHandler::error(
StatusCode::BadGateway,
format!("<h1>Downloaded bundle does not contain valid app.</h1><pre>{:?}</pre>", e),
"Invalid Dapp",
"Downloaded bundle does not contain a valid dapp.",
Some(&format!("{:?}", e))
))
},
Ok(manifest) => FetchState::Done(manifest)
@ -188,9 +196,11 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
},
Ok(Err(e)) => {
warn!(target: "dapps", "Unable to fetch new dapp: {:?}", e);
let error = ContentHandler::html(
let error = ContentHandler::error(
StatusCode::BadGateway,
"<h1>There was an error when fetching the dapp.</h1>".into(),
"Download Error",
"There was an error when fetching the dapp.",
Some(&format!("{:?}", e)),
);
(Some(FetchState::Error(error)), Next::write())
},

5
dapps/src/router/auth.rs
View File

@ -55,10 +55,9 @@ impl Authorization for HttpBasicAuth {
match auth {
Access::Denied => {
Authorized::No(Box::new(ContentHandler::new(
Authorized::No(Box::new(ContentHandler::error(
status::StatusCode::Unauthorized,
"<h1>Unauthorized</h1>".into(),
"text/html".into(),
"Unauthorized", "You need to provide valid credentials to access this page.", None
)))
},
Access::AuthRequired => {

12
dapps/src/router/host_validation.rs
View File

@ -16,7 +16,7 @@
use DAPPS_DOMAIN;
use hyper::{server, header};
use hyper::{server, header, StatusCode};
use hyper::net::HttpStream;
use jsonrpc_http_server::{is_host_header_valid};
@ -38,11 +38,9 @@ pub fn is_valid(request: &server::Request<HttpStream>, allowed_hosts: &[String],
}
pub fn host_invalid_response() -> Box<server::Handler<HttpStream> + Send> {
Box::new(ContentHandler::forbidden(
r#"
<h1>Request with disallowed <code>Host</code> header has been blocked.</h1>
<p>Check the URL in your browser address bar.</p>
"#.into(),
"text/html".into()
Box::new(ContentHandler::error(StatusCode::Forbidden,
"Current host is disallowed",
"You are trying to access your node using incorrect address.",
Some("Use allowed URL or specify different <code>hosts</code> CLI options.")
))
}

34
signer/src/ws_server/session.rs
View File

@ -22,7 +22,7 @@ use std::path::{PathBuf, Path};
use std::sync::Arc;
use std::str::FromStr;
use jsonrpc_core::IoHandler;
use util::H256;
use util::{H256, version};
#[cfg(feature = "ui")]
mod signer {
@ -112,7 +112,12 @@ impl ws::Handler for Session {
if !self.skip_origin_validation {
if !origin_is_allowed(&self.self_origin, origin) && !(origin.is_none() && origin_is_allowed(&self.self_origin, host)) {
warn!(target: "signer", "Blocked connection to Signer API from untrusted origin.");
return Ok(ws::Response::forbidden(format!("You are not allowed to access system ui. Use: http://{}", self.self_origin)));
return Ok(error(
ErrorType::Forbidden,
"URL Blocked",
"You are not allowed to access Trusted Signer using this URL.",
Some(&format!("Use: http://{}", self.self_origin)),
));
}
}
@ -121,7 +126,7 @@ impl ws::Handler for Session {
// Check authorization
if !auth_is_valid(&self.authcodes_path, req.protocols()) {
info!(target: "signer", "Unauthorized connection to Signer API blocked.");
return Ok(ws::Response::forbidden("You are not authorized.".into()));
return Ok(error(ErrorType::Forbidden, "Not Authorized", "Request to this API was not authorized.", None));
}
let protocols = req.protocols().expect("Existence checked by authorization.");
@ -137,7 +142,7 @@ impl ws::Handler for Session {
Ok(signer::handle(req.resource())
.map_or_else(
// return 404 not found
|| add_headers(ws::Response::not_found("Not found".into()), "text/plain"),
|| error(ErrorType::NotFound, "Not found", "Requested file was not found.", None),
// or serve the file
|f| add_headers(ws::Response::ok(f.content.into()), &f.mime)
))
@ -185,3 +190,24 @@ impl ws::Factory for Factory {
}
}
}
enum ErrorType {
NotFound,
Forbidden,
}
fn error(error: ErrorType, title: &str, message: &str, details: Option<&str>) -> ws::Response {
let content = format!(
include_str!("../../../dapps/src/error_tpl.html"),
title=title,
meta="",
message=message,
details=details.unwrap_or(""),
version=version(),
);
let res = match error {
ErrorType::NotFound => ws::Response::not_found(content),
ErrorType::Forbidden => ws::Response::forbidden(content),
};
add_headers(res, "text/html")
}