зеркало из https://github.com/mozilla/gecko-dev.git
156 строки
5.1 KiB
Rust
156 строки
5.1 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 resource_task::{Metadata, LoadData, TargetedLoadResponse, start_sending, ResponseSenders};
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use resource_task::ProgressMsg::{Payload, Done};
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use serialize::base64::FromBase64;
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use hyper::mime::Mime;
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use url::{percent_decode, SchemeData};
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pub fn factory(load_data: LoadData, start_chan: Sender<TargetedLoadResponse>) {
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// NB: we don't spawn a new task.
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// Hypothesis: data URLs are too small for parallel base64 etc. to be worth it.
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// Should be tested at some point.
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// Left in separate function to allow easy moving to a task, if desired.
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load(load_data, start_chan)
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}
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fn load(load_data: LoadData, start_chan: Sender<TargetedLoadResponse>) {
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let url = load_data.url;
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assert!("data" == url.scheme.as_slice());
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let mut metadata = Metadata::default(url.clone());
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let senders = ResponseSenders {
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immediate_consumer: start_chan,
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eventual_consumer: load_data.consumer,
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};
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// Split out content type and data.
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let mut scheme_data = match url.scheme_data {
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SchemeData::NonRelative(scheme_data) => scheme_data,
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_ => panic!("Expected a non-relative scheme URL.")
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};
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match url.query {
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Some(query) => {
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scheme_data.push_str("?");
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scheme_data.push_str(query.as_slice());
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},
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None => ()
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}
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let parts: Vec<&str> = scheme_data.as_slice().splitn(1, ',').collect();
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if parts.len() != 2 {
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start_sending(senders, metadata).send(Done(Err("invalid data uri".to_string())));
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return;
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}
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// ";base64" must come at the end of the content type, per RFC 2397.
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// rust-http will fail to parse it because there's no =value part.
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let mut is_base64 = false;
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let mut ct_str = parts[0];
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if ct_str.ends_with(";base64") {
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is_base64 = true;
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ct_str = ct_str.slice_to(ct_str.as_bytes().len() - 7);
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}
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// Parse the content type using rust-http.
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// FIXME: this can go into an infinite loop! (rust-http #25)
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let content_type: Option<Mime> = from_str(ct_str);
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metadata.set_content_type(content_type.as_ref());
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let progress_chan = start_sending(senders, metadata);
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let bytes = percent_decode(parts[1].as_bytes());
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if is_base64 {
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// FIXME(#2909): It’s unclear what to do with non-alphabet characters,
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// but Acid 3 apparently depends on spaces being ignored.
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let bytes = bytes.into_iter().filter(|&b| b != ' ' as u8).collect::<Vec<u8>>();
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match bytes.as_slice().from_base64() {
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Err(..) => {
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progress_chan.send(Done(Err("non-base64 data uri".to_string())));
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}
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Ok(data) => {
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progress_chan.send(Payload(data));
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progress_chan.send(Done(Ok(())));
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}
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}
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} else {
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progress_chan.send(Payload(bytes));
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progress_chan.send(Done(Ok(())));
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}
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}
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#[cfg(test)]
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fn assert_parse(url: &'static str,
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content_type: Option<(String, String)>,
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charset: Option<String>,
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data: Option<Vec<u8>>) {
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use std::comm;
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use url::Url;
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use sniffer_task;
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let (start_chan, start_port) = comm::channel();
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let sniffer_task = sniffer_task::new_sniffer_task();
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load(LoadData::new(Url::parse(url).unwrap(), start_chan), sniffer_task);
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let response = start_port.recv();
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assert_eq!(&response.metadata.content_type, &content_type);
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assert_eq!(&response.metadata.charset, &charset);
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let progress = response.progress_port.recv();
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match data {
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None => {
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assert_eq!(progress, Done(Err("invalid data uri".to_string())));
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}
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Some(dat) => {
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assert_eq!(progress, Payload(dat));
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assert_eq!(response.progress_port.recv(), Done(Ok(())));
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}
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}
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}
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#[test]
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fn empty_invalid() {
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assert_parse("data:", None, None, None);
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}
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#[test]
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fn plain() {
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assert_parse("data:,hello%20world", None, None, Some(b"hello world".iter().map(|&x| x).collect()));
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}
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#[test]
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fn plain_ct() {
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assert_parse("data:text/plain,hello",
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Some(("text".to_string(), "plain".to_string())), None, Some(b"hello".iter().map(|&x| x).collect()));
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}
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#[test]
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fn plain_charset() {
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assert_parse("data:text/plain;charset=latin1,hello",
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Some(("text".to_string(), "plain".to_string())), Some("latin1".to_string()), Some(b"hello".iter().map(|&x| x).collect()));
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}
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#[test]
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fn base64() {
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assert_parse("data:;base64,C62+7w==", None, None, Some(vec!(0x0B, 0xAD, 0xBE, 0xEF)));
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}
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#[test]
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fn base64_ct() {
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assert_parse("data:application/octet-stream;base64,C62+7w==",
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Some(("application".to_string(), "octet-stream".to_string())), None, Some(vec!(0x0B, 0xAD, 0xBE, 0xEF)));
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}
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#[test]
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fn base64_charset() {
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assert_parse("data:text/plain;charset=koi8-r;base64,8PLl9+XkIO3l5Pfl5A==",
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Some(("text".to_string(), "plain".to_string())), Some("koi8-r".to_string()),
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Some(vec!(0xF0, 0xF2, 0xE5, 0xF7, 0xE5, 0xE4, 0x20, 0xED, 0xE5, 0xE4, 0xF7, 0xE5, 0xE4)));
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}
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