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bypass SM for in-memory streams in request bodies, dis-allow other cases in sync XHR
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parent
3535dd7412
commit
ad4dea7d84
3 changed files with 75 additions and 19 deletions
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@ -196,6 +196,21 @@ impl ReadableStream {
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.close(cx, handle);
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}
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/// Does the stream have all data in memory?
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pub fn in_memory(&self) -> bool {
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self.external_underlying_source
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.as_ref()
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.map(|source| source.in_memory())
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.unwrap_or(false)
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}
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/// Return bytes for synchronous use, if the stream has all data in memory.
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pub fn get_in_memory_bytes(&self) -> Option<Vec<u8>> {
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self.external_underlying_source
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.as_ref()
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.and_then(|source| source.get_in_memory_bytes())
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}
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/// Acquires a reader and locks the stream,
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/// must be done before `read_a_chunk`.
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#[allow(unsafe_code)]
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@ -372,22 +387,37 @@ struct ExternalUnderlyingSourceController {
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buffer: RefCell<Vec<u8>>,
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/// Has the stream been closed by native code?
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closed: Cell<bool>,
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/// Does this stream contains all it's data in memory?
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in_memory: Cell<bool>,
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}
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impl ExternalUnderlyingSourceController {
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fn new(source: ExternalUnderlyingSource) -> ExternalUnderlyingSourceController {
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let buffer = match source {
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ExternalUnderlyingSource::Blob(size) | ExternalUnderlyingSource::Memory(size) => {
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Vec::with_capacity(size)
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},
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ExternalUnderlyingSource::FetchResponse => vec![],
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let (buffer, in_mem) = match source {
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ExternalUnderlyingSource::Blob(size) => (Vec::with_capacity(size), false),
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ExternalUnderlyingSource::Memory(size) => (Vec::with_capacity(size), true),
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ExternalUnderlyingSource::FetchResponse => (vec![], false),
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};
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ExternalUnderlyingSourceController {
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buffer: RefCell::new(buffer),
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closed: Cell::new(false),
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in_memory: Cell::new(in_mem),
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}
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}
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/// Does the stream have all data in memory?
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pub fn in_memory(&self) -> bool {
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self.in_memory.get()
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}
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/// Return bytes synchronously if the stream has all data in memory.
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pub fn get_in_memory_bytes(&self) -> Option<Vec<u8>> {
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if self.in_memory.get() {
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return Some(self.buffer.borrow().clone());
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}
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None
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}
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/// Signal available bytes if the stream is currently readable.
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#[allow(unsafe_code)]
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fn maybe_signal_available_bytes(
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@ -580,7 +580,13 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
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})
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},
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Some(DocumentOrBodyInit::Blob(ref b)) => {
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Some(b.extract(&self.global()).expect("Couldn't extract body."))
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let extracted_body = b.extract(&self.global()).expect("Couldn't extract body.");
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if !extracted_body.in_memory() && self.sync.get() {
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warn!("Sync XHR with not in-memory Blob as body not supported");
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None
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} else {
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Some(extracted_body)
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}
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},
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Some(DocumentOrBodyInit::FormData(ref formdata)) => Some(
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formdata
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@ -620,21 +626,23 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
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})
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},
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Some(DocumentOrBodyInit::ReadableStream(ref stream)) => {
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// TODO:
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// 1. If the keepalive flag is set, then throw a TypeError.
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if self.sync.get() {
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warn!("Sync XHR with ReadableStream as body not supported");
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None
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} else {
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if stream.is_locked() || stream.is_disturbed() {
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return Err(Error::Type(
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"The body's stream is disturbed or locked".to_string(),
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));
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}
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if stream.is_locked() || stream.is_disturbed() {
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return Err(Error::Type(
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"The body's stream is disturbed or locked".to_string(),
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));
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Some(ExtractedBody {
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stream: stream.clone(),
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total_bytes: None,
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content_type: None,
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source: BodySource::Null,
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})
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}
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Some(ExtractedBody {
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stream: stream.clone(),
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total_bytes: None,
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content_type: None,
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source: BodySource::Null,
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})
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},
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None => None,
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};
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