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47 lines
1.7 KiB
Rust
47 lines
1.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use file_loader;
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use mime_classifier::MIMEClassifier;
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use net_traits::{LoadConsumer, LoadData, NetworkError};
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use resource_thread::{CancellationListener, send_error};
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use std::path::Path;
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use std::sync::Arc;
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use url::Url;
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use util::resource_files::resources_dir_path;
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pub fn resolve_chrome_url(url: &Url) -> Result<Url, ()> {
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assert_eq!(url.scheme, "chrome");
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// Skip the initial //
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let non_relative_scheme_data = &url.non_relative_scheme_data().unwrap()[2..];
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let relative_path = Path::new(non_relative_scheme_data);
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// Don't allow chrome URLs access to files outside of the resources directory.
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if non_relative_scheme_data.find("..").is_some() ||
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relative_path.is_absolute() ||
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relative_path.has_root() {
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return Err(());
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}
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let mut path = resources_dir_path();
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path.push(non_relative_scheme_data);
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assert!(path.exists());
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return Ok(Url::from_file_path(&*path).unwrap());
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}
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pub fn factory(mut load_data: LoadData,
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start_chan: LoadConsumer,
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classifier: Arc<MIMEClassifier>,
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cancel_listener: CancellationListener) {
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let file_url = match resolve_chrome_url(&load_data.url) {
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Ok(url) => url,
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Err(_) => {
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send_error(load_data.url,
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NetworkError::Internal("Invalid chrome URL.".to_owned()),
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start_chan);
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return;
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}
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};
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load_data.url = file_url;
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file_loader::factory(load_data, start_chan, classifier, cancel_listener)
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}
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